CN204352311U

CN204352311U - The pneumatic continuous needleless syringe that gas control sliding spool valve controls

Info

Publication number: CN204352311U
Application number: CN201420703005.6U
Authority: CN
Inventors: 肖雅俊; 肖长正
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-21
Filing date: 2014-11-21
Publication date: 2015-05-27
Anticipated expiration: 2024-11-21

Abstract

This utility model relates to the pneumatic continuous needleless syringe that a kind of gas control sliding spool valve controls, it comprises main element, with the pilot valve that the trigger in main element or handle trigger, and be placed in the gas control sliding spool valve in the control valve housing (29) of main element.This utility model have percussion rapidly, jet parameters stablizes, injects reproducible, safe and reliable feature continuously, can medicinal liquid be expelled in the body of humans and animals in the mode of high pressure fluid column jet accurately, quantitatively, fast, when injecting to humans and animals, effectively to contact with humans and animals at micro-hole jet shower nozzle and automatic firing completes injection under having the state necessarily compressed.

Description

The pneumatic continuous needleless syringe that gas control sliding spool valve controls

Technical field

This utility model relates to syringe, the particularly continuous needleless syringe that pressurizes to medicinal liquid of gas control sliding spool valve control cylinder actuation plunger pump is a kind of for the integration of liquid medicine injection in humans and animals body, portable, continuous type gas-driven needle-less syringe.

Background technology

Current functionally similar continuous needleless syringe, be that hand-operated valve control cylinder actuation plunger pump pressurizes to medicinal liquid, its defect is that in percussion process, the speed of cocking action is inconsistent conveniently due to hand-operated valve, cause that the jet parameters pulled the trigger for each time is unstable, the poor repeatability of multiple injection, especially when injecting to animal, because hand-operated valve percussion is comparatively slow, is injected receptor and mismatches easy movement, make injection operation difficulty larger.In addition, because the problem of structure also has following defect:

1. due to employing is the valve body combined as a whole with cylinder block, makes the sealing surface manufacturing process difficulty of traveller valve seat larger.

2. due to employing is arrange locking nut on the external screw thread of air accumulator, must tighten locking nut, just can guarantee that air accumulator operationally can not move.

3. because plunges pump body is overall structure, make the yield rate of production process not high, thus increase manufacturing cost.

4. the poor repeatability of multiple injection.

5. use inconvenient, send out because of mistakenly hit sometimes and cause the phenomenon of liquid waste to occur.

, because its structure is not all roses, more or less there is above defect in " continuous needleless syringe of reducing supercharge cylinders " (patent No. 201310126074.6) that Chinese patent CN103230633A document is announced.

Summary of the invention

Technical problem to be solved in the utility model is: in order to overcome above-mentioned prior art Problems existing, the pneumatic continuous needleless syringe that a kind of gas control sliding spool valve controls is provided, this syringe adopt gas control sliding spool valve can make percussion rapidly, the jet parameters of each percussion stablizes, multiple injection reproducible; After the method adopting handle reach pressure touch-control gas control sliding spool valve, achieve automatic firing and complete injection, injection operation difficulty is reduced.

This utility model solves its technical problem and adopts following technical scheme:

The pneumatic continuous needleless syringe that the gas control sliding spool valve that this utility model provides controls, it is provided with main element, pilot valve and is placed in the gas control sliding spool valve in the control valve housing of main element, by triggering pilot valve, pilot valve controls compressed gas-driven gas control sliding spool valve, and gas control sliding spool valve makes air cylinder driven plunger displacement pump pressurize to medicinal liquid; When adopting trigger to trigger pilot valve, realize pulling the trigger fast; When adopting handle to trigger pilot valve, realize percussion and automatic firing fast.

Described gas control sliding spool valve is made up of blocking technological holes screw, No. one traveller return spring after blocking technological holes screw, No. one traveller before being contained in No. one traveller of traveller valve seat inside, traveller sealing ring, No. one traveller.

The front end inflation of No. one described traveller or venting are controlled by the pilot valve of two position three-way valve, the air pressure of this traveller end face are changed, to control the movement of this traveller in traveller valve seat.

Described gas control sliding spool valve by being contained in No. two travellers of traveller valve seat inside, traveller sealing ring, No. two traveller return springs form.

The rear end venting of No. two described travellers or inflation are controlled by the pilot valve of two position three-way valve, the air pressure of this traveller end face are changed, to control the movement of this traveller in traveller valve seat.

Described control valve housing, cylindrical shape inside it, is equipped with traveller valve seat; Be cylindrical or prismatic outside it, outside this, handle be housed.

Described handle with the cylindroid outside control valve housing for the track that slides axially, can along the axis direction of control valve housing slide anteroposterior in certain stroke, but radially can not swing, after handle, in cylindrical shell and between control valve housing, be provided with handle return spring.

The strong point that described handle upper end is stretched out forward installs trigger with trigger bearing pin, and the lower end of trigger can swing in finger ring, and trigger is provided with No. two trigger return springs, the pole of playing safety effect of stretching out before the front end of trigger is oriented.

The external cylindrical surface stage casing of the air accumulator in main element is equipped with sealing ring after sealing ring before air accumulator, air accumulator, sealing position, front and back is not isometrical, utilizes the axial compressive force difference of not isometrical generation that air accumulator is made itself and stepped cylinder auto lock after importing Compressed Gas.

Liquid plunger displacement pump in main element, it is provided with liquid valve valve body, the 3rd sealing gasket, plunger displacement pump threeway, the 4th sealing gasket, plunger displacement pump body, and they are in turn connected into one by screw thread.The external cylindrical surface in plunger displacement pump body stage casing is equipped with the plunger displacement pump ring flange be threaded.

This utility model compared with prior art has following major advantage:

One, the technology difficulty that the sealing surface that can overcome traveller valve seat of the prior art manufactures.

The control valve housing of this syringe is built-in with traveller valve seat.Traveller valve seat becomes cylindric, cylindrical is provided with multiple seal groove, be equipped with traveller valve seat exterior seal ring respectively, traveller valve seat is sealed in control valve housing and cuts off each independent gas circuit of formation, and traveller valve seat is retained in control valve housing, thus the sealing surface manufacturing process difficulty of traveller valve seat is significantly reduced, just can meet manufacture requirements with common numerically controlled lathe.

Its two, conveniently air accumulator is installed:

The air accumulator external cylindrical surface stage casing of this syringe is equipped with sealing ring after sealing ring before air accumulator, air accumulator, make itself and stepped cylinder inner wall sealing, sealing position, front and back is not isometrical, before stepped cylinder and air accumulator, sealing ring corresponding position diameter is little, after stepped cylinder and air accumulator, sealing ring corresponding position diameter is large, utilizes the axial compressive force difference of not isometrical generation that air accumulator is made itself and stepped cylinder auto lock after importing Compressed Gas.

Its three, because adopting split type plunger displacement pump, the yield rate of production process is effectively controlled, reduce manufacturing cost.

This syringe is by plunges pump body larger for above-mentioned manufacture difficulty of the prior art, resolve into and be formed by connecting by screw thread and the 3rd sealing gasket, the 4th sealing gasket by after plunger displacement pump body, plunger displacement pump threeway, liquid valve valve body, the manufacture of plunger displacement pump ring flange single-piece, object is that manufacturing process difficulty is significantly reduced, the yield rate of production process is effectively controlled, reduces manufacturing cost.

The structure of the plunges pump body of this syringe is: plunger displacement pump body interior have one run through before and after circular pump chamber, there is outer silk tooth front portion, connect the internal thread tooth of plunger displacement pump threeway rear end with this tooth, and be equipped with the 4th sealing gasket at its tooth tail end step place, its junction is sealed; In the middle part of plunger displacement pump body, external cylindrical surface has outer silk pressure, the step of location is had after silk tooth, plunger displacement pump ring flange center internal thread tooth is connected with it and becomes an entirety, and make plunger displacement pump body vertical with plunger displacement pump ring flange circumferential plane and concentric with the positioning step of plunger displacement pump ring flange by positioning step, plunger displacement pump ring flange there is the ring flange passage for dummy piston front end air pressure.The internal thread pressure of its front end of plunger displacement pump threeway is connected with the outer silk tooth of liquid valve valve rear end, and is equipped with the 3rd sealing gasket at its tooth tail end step place, and its junction is sealed.

Its four, multiple injection reproducible.

In this syringe, by triggering pilot valve, pilot valve controls compressed gas-driven traveller, the method that gas control sliding spool valve control cylinder actuation plunger pump pressurizes to medicinal liquid, can pull the trigger fast, rapidly medicinal liquid is expelled in the body of humans and animals with the mode accurate quantification of high pressure fluid column jet, makes that the jet parameters of each percussion is stablized, multiple injection reproducible.

The percussion principle of this syringe is: the traveller front end in employing pilot valve control gas control sliding spool valve or the air pressure situation of rear end, make traveller in traveller valve seat, become an air rammer, in following embodiment, traveller quality is 20g, it is 1.5mm that pilot valve triggers stroke, the diameter of traveller sealing ring is 11.7mm, and the effective pneumatic area of traveller end face is: 1.07cm ², the elastic force of traveller return spring is selected in 1-1.2Kg (power), and the actual motion resistance of traveller in traveller valve seat is 0.6-0.8Kg (power), and the Compressed Gas air feed pressure of employing is 4Kg/cm ²---7.5Kg/cm ².When air feed pressure being selected the 4Kg/cm of lower limit ²during percussion, the pneumatic thrust that traveller is subject to is: 1.07cm ²× 4Kg/cm ²=4.28Kg (power), and the elastic force maximum of the resistance of motion now overcome needed for traveller and traveller return spring is: 0.8Kg (power)+1.2Kg (power)=2Kg (power), the vector minima of the axial thrust of traveller is: 4.28Kg (power)-2Kg (power)=2.28Kg (power), 2.28Kg (power) acts on quality and is only the traveller of 20g axially, traveller is slid axially to the other end within the extremely short time, make gas control sliding spool valve moment standard-sized sheet, when air feed pressure being selected the 7.5Kg/cm of the upper limit ²during percussion, the vector of the axial thrust of traveller is: 6.03Kg (power), traveller sliding speed can be faster.Because pilot valve triggering stroke is shorter, so percussion rapidly, when after setting air feed pressure, traveller is pulled the trigger the pneumatic thrust be subject at every turn and can not be changed, the kinestate of traveller also can not change, thus can make that the jet parameters of each percussion is stablized, multiple injection reproducible.This working condition is that manual sliding spool valve is beyond one's reach.

In above-mentioned prior art and this utility model, all adopt sliding spool valve control cylinder to medicinal liquid supercharging, traveller kinestate is directly connected to the kinestate of piston, whether the speed of traveller motion, the speed of each motion is consistent, is directly connected to the stability of jet parameters, the repeatability of multiple injection.

What above-mentioned prior art adopted is the stage casing interlock traveller using trigger, move after promoting traveller with trigger, need quick cocking that percussion just can be made rapid, one-time continuous cocking is once needed in practical operation use procedure, finger fatigue makes the action speed of each cocking inconsistent, cannot ensure can effectively inject at every turn, cause jet parameters instability, poor repeatability.

Its five, easy to use, reliable, mistakenly hit can not send out waste medicinal liquid.

This syringe adopts can the handle of forward slip, and use Trigger safety lock handle, cocking is needed and driving handle reach simultaneously during percussion, automatically the method pulled the trigger is started after handle rear end pressure contacts pilot valve, in percussion rapidly, the jet parameters of each percussion stablizes, on the reproducible basis of multiple injection, further effectively to contact with the skin of humans and animals at micro-hole jet shower nozzle and realize automatic firing under having the state necessarily compressed complete injection, improve the safety of injection, reliability, effectiveness, prevent mistakenly hit from sending out waste medicinal liquid.Especially when fixing to animal inconvenience enforcement protection, make injection operation simply easy.

Accompanying drawing explanation

Fig. 1 is that No. one trigger of embodiment 2 is at the front view waiting for cock.

Fig. 2 is No. two triggers of embodiment 3, two trumpeter's handles are waiting for the front view of cock.

Fig. 3 is that No. two triggers of embodiment 3, two trumpeter's handles are at the front view of cock.

Fig. 4 gas delivery hose connects the schematic diagram of needleless injector and pressure regulator valve and compressed gas cylinder.

Fig. 5 is the sectional view that embodiment 2 waits for cock.

Fig. 6 is the sectional view that embodiment 3 waits for cock.

Fig. 7 is block assembly sectional view.

Fig. 8 is interlock cover front view.

Fig. 9 is the axial sectional view of interlock cover A-A.

Figure 10 is interlock cover left view.

Figure 11 is short air accumulator sectional view.

Figure 12 is long air accumulator sectional view.

Figure 13 is liquid plunger displacement pump sectional view.

Figure 14 is that the cylinder operated control valve of embodiment 2 is at the sectional view waiting for cock.

Figure 15 is the sectional view of cylinder operated control valve at cock of embodiment 2.

Figure 16 is that the cylinder operated control valve of embodiment 3 is at the sectional view waiting for cock.

Figure 17 is the sectional view of cylinder operated control valve at cock of embodiment 3.

Figure 18 is that No. one pilot valve of embodiment 2 is at the sectional view waiting for cock.

Figure 19 is the sectional view of No. one pilot valve at cock of embodiment 2

Figure 20 is that No. two pilot valves of embodiment 3 are at the sectional view waiting for cock.

Figure 21 is the sectional view of No. two pilot valves at cock of embodiment 3.

In figure: 1. air accumulator; 2. block assembly; 3. one property syringe; 4. one property injector clamping seat; 5. medicinal liquid delivery hose; 6. liquid feed valve valve body; 7. plunger displacement pump threeway; 8. liquid valve valve body; 9. micro-hole jet shower nozzle; 10. plunger displacement pump body; 11. tensioned screws; 12. plunger displacement pump ring flanges; 13. finger rings; 14. No. one triggers; 15. 1 trumpeter's handles; 16. No. two triggers; 17. 2 trumpeter's handles; 18. gas pressure regulating valves; 19. gas delivery hose; 20. compressed gas cylinders; 21. nuts; Sealing ring after 22. pistons; 23. pistons; 24. interlock covers; 24-1. interlock cover lateral opening; 24-2. interlock cover hollow molded cavity; 25. stepped cylinder; Sealing ring before 26. pistons; 27. plungers; 28. circular cylinder ports; 29. control valve housings; 30. first blocking technological holes screws; 31. steam vents; 32. traveller valve seats; 33. master cylinder ports; 34. second blocking technological holes screws; 35. traveller valve seat exterior seal rings; 36. the 3rd blocking technological holes screws; 37. control valve air inlets; 38. gas-tpe fittings; Sealing ring after 39. air accumulators; 40. air accumulator ventholes; Sealing ring before 41. air accumulators; 42. annular stop circles; Terminal screw after 43. plunges pump bodies; 44. plunger guide covers; 45. liquid feed valve steel balls; 46. first sealing gaskets; 47. liquid feed valve springs; 48. liquid valve springs; 49. second sealing gaskets; 50. liquid valve steel balls; 51. the 3rd sealing gaskets; 52. the 4th sealing gaskets; 53. ring flange passages; 54. outer spiral shell disks; 55. plunger sealing washers; 56. No. one trigger bearing pins; 57. No. one pilot valve air supply channels; Blocking technological holes screw before 58. No. one travellers; Air flue venthole in the middle of 59. No. one travellers; 60. No. one travellers; 61. traveller sealing rings; Air flue air inlet in the middle of 62. No. one travellers; Blocking technological holes screw after 63. No. one travellers; 64. No. one traveller return springs; 65. No. one control valve shutoff screws; 66. No. one control valve shutoff screw passages; 67. insurance steps; 68. No. two trigger bearing pins; 69. No. two trigger return springs; 70. No. two control valve shutoff screw sealing rings; 71. No. two control valve shutoff screws; 72. No. two traveller front aperture; Air flue venthole in the middle of 73. No. two travellers; 74. No. two travellers; Air flue air inlet in the middle of 75. No. two travellers; 76. No. two traveller return springs; 77. No. two pilot valve air supply channels; 78. 2 trumpeter's handle return springs; 79. No. one pilot valve second sealing rings; 80. No. one pilot valve first sealing rings; 81. No. one pilot valve inlet channels; 82. No. one pilot valve the 3rd sealing rings; 83. No. one pilot valve bodies; 84. No. one pilot valve housings; 85. No. one pilot valve steam vents; 86. No. one pilot valve springs; 87. No. one pilot valve spring bases; 88. knob nuts; 89. No. one pilot valve front valve cores; 90. No. one pilot valve the 4th sealing rings; 91. No. one pilot valve first air chambers; 92. No. one pilot valve the 5th sealing rings; 93. No. one pilot valve inner spools; 94. No. one pilot valve the 6th sealing rings; 95. No. one pilot valve second air chambers; Air chamber passage before 96. No. one travellers; 97. No. one pilot valve body rear end caps; 98. No. two pilot valve spring bases; 99. No. two pilot valve exhaust passages; 100. No. two pilot valve housings; 101. No. two pilot valve first sealing rings; 102. No. two pilot valve second sealing rings; 103. No. two pilot valve inlet channels; 104. No. two pilot valve bodies; 105. No. two pilot valve the 3rd sealing rings; 106. No. two traveller rear gas chamber passages; 107. No. two pilot valve air chambers; 108. No. two pilot valve the 4th sealing rings; 109. No. two pilot valve cores; 110. No. two pilot valve springs.

Detailed description of the invention

The pneumatic continuous needleless syringe that gas control sliding spool valve that this utility model provides controls, in the Chinese patent application publication No. CN103230633A (patent No.: the basis of 201310126074.6) announcing " continuous needleless syringe of reducing supercharge cylinders " improves.Described improvement parts are traveller valve seat, traveller, air accumulator, liquid plunger displacement pump, trigger and handle mainly, turn increases pilot valve parts in addition.

The pneumatic continuous needleless syringe that the gas control sliding spool valve that this utility model provides controls, being continuous needleless syringe pressurize to medicinal liquid with gas control sliding spool valve control cylinder actuation plunger pump, is a kind of for the integration of liquid medicine injection in humans and animals body, portable, continuous type gas-driven needle-less syringe.Whole syringe comprises main element, pilot valve and is placed in the gas control sliding spool valve in the control valve housing of main element, and by triggering pilot valve, pilot valve controls compressed gas-driven gas control sliding spool valve, and gas control sliding spool valve makes air cylinder driven plunger displacement pump pressurize to medicinal liquid; When adopting trigger to trigger pilot valve, realize pulling the trigger fast; When adopting handle to trigger pilot valve, realize percussion and automatic firing fast.

Described gas control sliding spool valve full name is air pressure control type slide column type reversal valve, its function is the piston movement state in control cylinder, and piston movement direction can be changed, its specific works process is: given the front end of No. one traveller in dress traveller valve seat or No. two travellers or rear end inflation by No. one pilot valve or No. two pilot valves or exitted, the atmospheric pressure state of the axial end of No. one traveller or No. two travellers is changed, No. one traveller or No. two travellers are caused to slide axially under Compressed Gas promotes, the air guide channel of gas control sliding spool valve is changed, control the piston movement situation in cylinder further.

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but be not limited to described content below.

Embodiment 1:

The pneumatic continuous needleless syringe that the gas control sliding spool valve that the present embodiment 1 provides controls, its structure is as shown in Fig. 1 to Figure 21, be provided with main body, pilot valve and gas control sliding spool valve, wherein main body comprises power gas source, medicinal liquid storage device, block assembly 2, air accumulator 1, liquid plunger displacement pump, micro-hole jet shower nozzle 9, finger ring 13, trigger and handle.Except power gas source, the whole integrated installation of other parts, on block assembly 2, forms the pneumatic continuous needleless syringe that an integrated hand-held gas control sliding spool valve controls.

Described pilot valve, is the two position three-way valve adopting manpower to control, manually controls, change its conducting state, makes it to the front end of No. one traveller 60 or No. two travellers 74 or rear end inflation or venting.No. one pilot valve (Fig. 7, Figure 14, Figure 18) can be adopted, it is connected with the female thread of control valve housing 29 front end by No. one pilot valve housing 84 rear end external screw thread, and No. one pilot valve is contained in the front end (detailed in Example 2) of control valve housing 29; Also No. two pilot valves (Fig. 7, Figure 16, Figure 20) different from No. one pilot valve structure can be adopted, it is connected with the female thread of control valve housing 29 rear end by No. two pilot valve housing 100 front end external screw threads, and No. two pilot valves are contained in the rear end (detailed in Example 3) of control valve housing 29.

Described gas control sliding spool valve, can adopt No. one gas control sliding spool valve (Fig. 7, Figure 14), and it is contained in control valve housing 29 (detailed in Example 2); Also can adopt No. two gas control sliding spool valves (Fig. 7, Figure 16) different from No. one gas control sliding spool valve structure, it is also contained in control valve housing 29 (detailed in Example 3).

Described power gas source, is shown in Fig. 4, and compressed gas cylinder 20 can be selected to fill compression arbon dioxide gas; Power gas source also can select the compressed gas cylinder or compressed air pump that fill other safe gas.Power gas source outfan controls by gas pressure regulating valve 18 pressure exporting gas, connects the gas-tpe fitting 38 of outfan to air accumulator 1 of gas pressure regulating valve 18 with gas delivery hose 19.

Described medicinal liquid storage device, is shown in Fig. 1 and Fig. 2, can be made up of one property syringe 3, medicinal liquid delivery hose 5, one property injector clamping seat 4.One property injector clamping seat 4 is arranged on the top of block assembly 2, medicinal liquid is stored in inside one property syringe 3 of standard universal, one time property syringe 3 is stuck in one property injector clamping seat 4, and can dismounting easily, with medicinal liquid delivery hose 5, one property syringe 3 is connected with liquid feed valve valve body 6.Described medicinal liquid storage device also can connect medicine bottle with longer medicinal liquid delivery hose 5 and be carried by operator.

The structure of described block assembly 2 is as shown in Fig. 1-Fig. 3 and Fig. 7, be made up of upper and lower two parts: upper part is stepped cylinder 25, lower part is the control valve housing 29 be arranged in parallel with stepped cylinder 25, cylindrical shape inside control valve housing 29, outside can be cylindrical, also can be prismatic.

Described stepped cylinder 25 inner cylinder face is waney stairstepping cylinder, become stepped before and after inner cylinder face, its leading portion diameter is less than back segment diameter, for the stairstepping face of cylinder that diameter does not wait, formed for piston 23, before sealing ring 22, piston, sealing ring 26 slides after piston stepped cylinder cylinder, be built-in with: sealing ring 22, interlock cover 24 and nut 21 after sealing ring 26, piston before piston 23, piston.The cylindrical of piston 23 becomes stepped cylindrical shape, its diameter is the corresponding internal diameter being less than stepped cylinder 25 respectively, in the front end close to piston 23 with have groove respectively close to the rear end of piston 23, be equipped with respectively in groove and seal with cylinder inner wall and slidably sealing ring 22 after sealing ring 26, piston before piston.

Described piston 23 is built-in with interlock cover 24, and interlock cover 24 is connected as one by screw thread and piston 23, and is locked with nut 21.The structure of described interlock cover 24 is as shown in Fig. 8 to Figure 10, inside be provided with interlock cover hollow molded cavity 24-2, its axial section shape is as shown in the interlock cover hollow molded cavity 24-2 in Fig. 9, go out young the inside large, its front end exit has one section of diameter to be less than the step of plunger 27 rear end sphere diameter, plunger 27 rear end spheroid axially cannot be deviate from from interlock cover 24 front end edge, the diameter of the inside, slightly larger than plunger 27 rear end sphere diameter, makes plunger 27 rear end spheroid have one section of stroke that can be free to slide vertically in interlock cover 24.Radially there is a diameter middle part that interlock cover 24 is free to slide stroke in its side correspondence slightly larger than the circular port of plunger 27 rear end spherical diameter, and the groove of width slightly larger than plunger 27 back segment body diameter is set vertically from interlock cover 24 front end, this groove and circular port are connected, make interlock overlap 24 sides and form interlock cover lateral opening 24-1 (Fig. 8), this opening can make the back segment of plunger 27 enter interlock cover 24 from interlock cover 24 side, and such plunger 27 just can be placed to easily in interlock cover 24 or from interlock cover 24 and take out.

There is female thread in its front end of stepped cylinder 25, be connected with plunger displacement pump ring flange 12 by outer spiral shell disk 54, tensioned screw 11, and be provided with positioning step plunger displacement pump ring flange 12 is located.

Female thread is had in stepped cylinder 25 its rear end, rear end female thread is connected with the external screw thread of air accumulator 1, with sealing ring before air accumulator 41, after air accumulator, the inner cylinder face of sealing ring 39 correspondence is also waney stairstepping face of cylinder, sealing ring 41 before corresponding air accumulator inside stepped cylinder 25, control valve air inlet 37 is provided with between sealing ring 39 after air accumulator, air accumulator arranges air accumulator venthole 40 in the position of corresponding control valve air inlet 37, cylindrical in the position of air accumulator venthole 40 along air accumulator has a circumferential groove, make air accumulator 1 and control valve air inlet 37 can obtain reliable gas circuit to be connected.

Three gas channels are provided with between described control valve housing 29 and stepped cylinder 25, circular cylinder port 28, master cylinder port 33, control valve air inlet 37 respectively, the below in three holes more than control valve housing 29 is corresponding, three fabrication holes more than promising manufacture stayed during three gas channels, use the first blocking technological holes screw 30, second blocking technological holes screw 34, the 3rd blocking technological holes screw 36 by blocking technological holes respectively.

See Fig. 7, traveller valve seat 32 is built-in with at control valve housing 29, traveller valve seat 32 one-tenth is cylindric, cylindrical is provided with multiple seal groove (only indicating one of them in Fig. 7), be equipped with traveller valve seat exterior seal ring 35 respectively, traveller valve seat 32 is sealed in control valve housing 29 and cuts off each independent gas circuit of formation, and traveller valve seat 32 is retained in control valve housing 29, shown in control valve housing 29 and traveller valve seat 32 corresponding diagram 7, position is provided with steam vent 31, steam vent 31 passes traveller valve seat 32 in traveller valve seat 32, control valve housing 29 leads to outside equipment, for equipment aerofluxus, a hole is only demonstrated in figure, the steam vent of multiple micro-aperture can be set in this region for aerofluxus and noise elimination.

See Fig. 7, Figure 14, Figure 16, be provided with multiple circular ring slot in traveller valve seat 32, the part of its projection contacts with corresponding traveller sealing ring 61 and is formed and slidably seals.Traveller valve seat 32 being positioned at the circular cylinder port 28 of control valve housing 29, master cylinder port 33, control valve air inlet 37 corresponding position have corresponding pore and its UNICOM.

See Fig. 1, Fig. 2, Fig. 5 and Fig. 6, be equipped with finger ring 13 below block assembly 2, finger ring 13 is connected with block assembly 2 by screw.

See Figure 11, Figure 12, Figure 14, Figure 16, air accumulator 1 can be cylindrical, hollow tank body, and there is gas-tpe fitting 38 rear end, and the annular stop circle 42 with elastic buffer position-limiting action is equipped with in front end, for piston 23 buffer limit.

Air accumulator 1 external cylindrical surface stage casing is equipped with sealing ring 39 after sealing ring 41 before air accumulator, air accumulator, make itself and stepped cylinder 25 inner wall sealing, sealing position, front and back is not isometrical, before stepped cylinder 25 with air accumulator, to seal position diameter little for sealing ring 41, after stepped cylinder 25 with air accumulator, sealing ring 39 seals position diameter greatly, utilizes the axial compressive force difference of not isometrical generation that air accumulator 1 is made itself and stepped cylinder 25 auto lock after importing Compressed Gas.

Air accumulator 1 back segment external cylindrical surface has external screw thread, be connected with the screw-internal thread fit of stepped cylinder 25 rear end, can by regulating the precession degree of depth accurate adjustment injected dose among a small circle of screw thread, the air accumulator 1 that more different lengths can be set with the setting of the different injected dose of correspondence, such as: 1ml, 1.5ml, 2ml ...Figure 11 shows that relatively short air accumulator 1, Figure 12 shows that relatively long air accumulator 1.

Described liquid plunger pump structure as shown in figure 13, adopt split-type structural, overlap 44 by plunger displacement pump body 10, plunger displacement pump threeway 7, plunger displacement pump ring flange 12, plunger 27, plunger guide, plunger sealing washer 55, after plunges pump body terminal screw 43, liquid feed valve valve body 6, liquid feed valve spring 47, liquid feed valve steel ball 45, liquid valve spring 48, liquid valve steel ball 50, liquid valve valve body 8 and connect the first sealing gasket 46, second sealing gasket 49 of assembly of the plunger pump, the 3rd sealing gasket 51, the 4th sealing gasket 52 form.

Be in turn connected into one by after liquid valve valve body 8, the 3rd sealing gasket 51, plunger displacement pump threeway 7, the 4th sealing gasket 52, the manufacture of plunger displacement pump body 10 single-piece by screw thread, plunger displacement pump ring flange 12 be threaded connection on the external cylindrical surface in plunger displacement pump body 10 stage casing.Object is that manufacturing process difficulty is reduced, and the yield rate of production process is effectively controlled, and reduces manufacturing cost.

The structure of described plunger displacement pump body 10 as shown in figure 13, its inside have one run through before and after circular pump chamber, there is outer silk tooth front portion, connects the internal thread tooth of plunger displacement pump threeway 7 rear end with this tooth, and be equipped with the 4th sealing gasket 52 at its tooth tail end step place, its junction is sealed; In the middle part of it, external cylindrical surface has outer silk pressure, the step of location is had after silk tooth, plunger displacement pump ring flange 12 center internal thread tooth is connected with it and becomes an entirety, and make plunger displacement pump body 10 vertical with plunger displacement pump ring flange 12 circumferential plane and concentric with the positioning step of plunger displacement pump ring flange 12 by positioning step; Plunger displacement pump ring flange 12 is provided with the ring flange passage 53 for dummy piston front end air pressure.

There is internal thread tooth described plunger displacement pump body 10 its rear end, and two plunger guide covers 44, plunger sealing washers 55 are housed before the internal thread pressure of rear end, be connected with plunger displacement pump body 10 rear end internal thread tooth with terminal screw after plunges pump body 43, be fixed plunger guide cover 44 and plunger sealing washer 55 by terminal screw after plunges pump body 43.

Described plunger guide cover 44 has two, sees Figure 13, is arranged on the front and back of plunger sealing washer 55 respectively.

As shown in figure 13, the internal thread pressure of its front end is connected with the outer silk tooth of liquid valve valve body 8 rear end the structure of described plunger displacement pump threeway 7, and is equipped with the 3rd sealing gasket 51 at its tooth tail end step place, and its junction is sealed; The internal thread pressure of its upper side interface is connected with the outer silk tooth of liquid feed valve valve body 6 lower end, and centre is equipped with the first sealing gasket 46 makes its junction seal; And in liquid feed valve valve body 6, be equipped with liquid feed valve steel ball 45, liquid feed valve spring 47 successively.

See Figure 13, the outer silk tooth of liquid valve valve body 8 front end connects the internal thread tooth of micro-hole jet shower nozzle 9 rear end, and is equipped with the second sealing gasket 49 at the end face of liquid valve valve body 8 front end, in the die cavity of liquid valve valve body 8, be equipped with liquid valve steel ball 50, liquid valve spring 48 successively.

Described micro-hole jet shower nozzle 9, its female thread is connected (Figure 13) with the outer silk tooth of liquid valve valve body 8 front end; Can there be forward the cylinder stretched out in its centre, front end, and cylinder front end is spherical in shape, cylindrical hollow, and have the passage for medicinal liquid injection, Channel front end has jet microporous.

The structure of described plunger 27 is as shown in Figure 13, Fig. 7: its leading portion diameter is less than the pump chamber diameter of plunger displacement pump body 10, and this leading portion stretches in the pump chamber of plunger displacement pump body 10, and forms with plunger sealing washer 55 and slidably seal; Its stage casing limited location step, limits plunger 27 and moves forward further after limited step plane contacts with the rear end face of terminal screw after plunges pump body 43; There is a ball its rear end, is used for being connected with the cover 24 that links.

Described plunger displacement pump ring flange 12, see Fig. 1, Fig. 2, Fig. 5, Fig. 6, Figure 13, its diameter is greater than the aperture of stepped cylinder 25 front end, and be provided with positioning step with stepped cylinder 25 front end matching part, outer spiral shell disk 54 is connected with stepped cylinder 25 front end female thread by external screw thread.Plunger displacement pump ring flange 12 has for the ring flange passage 53 of dummy piston front end air pressure with for the hole piercing into tensioned screw 11, with tensioned screw 11, plunger displacement pump ring flange 12 is connected with outer spiral shell disk 54.

Embodiment 2:

The pneumatic continuous needleless syringe that the gas control sliding spool valve that the present embodiment 2 provides controls, is provided with No. one pilot valve, No. one gas control sliding spool valve and main element mutually isostructural with embodiment 1.Specific as follows:

See Fig. 7, Figure 14, Figure 18, before and after control valve housing 29, two ends are provided with female thread, control valve housing 29 rear end female thread is connected with the external screw thread of No. one control valve shutoff screw 65, make No. one control valve shutoff screw 65 be contained in the rear end of control valve housing 29, No. one control valve shutoff screw 65 is provided with the control valve shutoff screw passage 66 communicated with air.

See Figure 18, Figure 19, described No. one pilot valve can be by: No. one pilot valve housing 84, No. one pilot valve body 83, No. one pilot valve spring 86, No. one pilot valve spring base 87, No. one pilot valve front valve core 89, No. one pilot valve inner spool 93, No. one pilot valve body rear end cap 97, round end nut 88, No. one pilot valve first sealing ring 80, No. one pilot valve second sealing ring 79, No. one pilot valve the 3rd sealing ring 82, No. one pilot valve the 4th sealing ring 90, No. one pilot valve the 5th sealing ring 92, No. one pilot valve the 6th sealing ring 94 form.

See Fig. 7, Figure 14, Figure 18, external screw thread is had outside No. one pilot valve housing 84 rear end large cylinder, connect with control valve housing 29 front end female thread with the external screw thread of No. one pilot valve housing 84, and No. one pilot valve the 3rd sealing ring 82 is set at control valve housing 29 front end face junction is sealed, No. one pilot valve is contained in the front end of control valve housing 29.

See Figure 18, Figure 19, No. one pilot valve housing 84 is in step-like cylinder, No. one little cylinder in pilot valve housing 84 front end is that No. one pilot valve housing 84 rear end large cylinder is built-in with No. one pilot valve body 83, No. one pilot valve inner spool 93, No. one pilot valve body rear end cap 97, No. one pilot valve first sealing ring 80, No. one pilot valve second sealing ring 79, No. one pilot valve the 5th sealing ring 92, No. one pilot valve the 6th sealing ring 94 for the guide pin bushing of No. one pilot valve front valve core 89 in interior slip.

See Figure 18, Figure 19, No. one pilot valve body 83 external cylindrical surface is equipped with No. one pilot valve first sealing ring 80, No. one pilot valve the 5th sealing ring 92, to be sealed by No. one pilot valve body 83 and be retained in No. one pilot valve housing 84 by No. one pilot valve first sealing ring 80, No. one pilot valve the 5th sealing ring 92.

See Figure 18, Figure 19, No. one pilot valve body rear end cap 97 to be connected with No. one pilot valve body 83 rear end female thread by external screw thread and to be placed in No. one pilot valve body 83, with No. one pilot valve second sealing ring 79, junction is sealed, form No. one pilot valve second air chamber 95.

See Figure 18, Figure 19, from No. one pilot valve second air chamber 95, run through No. one pilot valve body rear end cap 97, No. one pilot valve body 83 and No. one pilot valve housing 84 to be provided with No. one pilot valve inlet channel 81, No. one pilot valve inlet channel 81 and to communicate with No. one pilot valve air supply channel 57 outside No. one pilot valve housing 84.

See Figure 18, No. one pilot valve inner spool 93 is equipped with No. one pilot valve the 6th sealing ring 94, No. one pilot valve the 6th sealing ring 94 can not move axially on the face of cylinder of No. one pilot valve inner spool 93, and be jointly placed in No. one pilot valve second air chamber 95, No. one pilot valve inner spool 93 point diameter is less than the diameter of No. one pilot valve body 83 corresponding aperture, No. one pilot valve inner spool 93 front end extends in No. one pilot valve first air chamber 91 by the hole in the middle of No. one pilot valve body 83, when the front end of No. one pilot valve inner spool 93 is not withstood by No. one pilot valve front valve core 89, simultaneously under the promotion of No. one pilot valve second air chamber 95 internal gas pressure, No. one pilot valve second air chamber 95 and No. one pilot valve first air chamber 91 are sealed partition by No. one pilot valve inner spool 93 and No. one pilot valve the 6th sealing ring 94.

See Figure 18, Figure 19, described No. one pilot valve front valve core 89, profile is stairstepping cylinder axis.Its rear end is in No. one pilot valve first air chamber 91, and the step of its rear end makes it cannot deviate from No. one pilot valve housing 84, and is provided with air slot at its step place.Its face of cylinder, stage casing is provided with groove, and the diameter that this groove is provided with No. one pilot valve the 4th sealing ring 90, No. one pilot valve front valve core 89 cylinder is less than the internal diameter of No. one pilot valve housing 84 front end guide pin bushing, and its gap is enough to satisfied No. one pilot valve and controls passing through of air-flow.It is outer and have screw thread that No. one pilot valve housing 84 is stretched out in its front end, on the cylinder that its front end is stretched out, cover has No. one pilot valve spring base 87, between No. one pilot valve housing 84 and No. one pilot valve spring base 87, be equipped with No. one pilot valve spring 86, be connected with No. one pilot valve front valve core 89 nose threads with round end nut 88 and lock.

See Figure 18, No. one pilot valve spring 86, make No. one pilot valve front valve core 89 under not cock, remain on return state forward.

See Figure 18, Figure 19, No. one pilot valve housing 84 guide pin bushing inner cylinder face is made up of two-stage nitration, leading portion diameter is larger than back segment diameter, when No. one pilot valve the 4th sealing ring 90 is at its leading portion position, between No. one pilot valve first air chamber 91 and No. one pilot valve steam vent 85, air-flow can pass through, when No. one pilot valve the 4th sealing ring 90 is at its back segment position, sealing circle and back segment diameter smaller part position are formed and seal, and between No. one pilot valve first air chamber 91 and No. one pilot valve steam vent 85, air-flow cannot pass through.

See Figure 19, No. one pilot valve front valve core 89 can along the axially forward and backward slip of No. one pilot valve housing 84 guide pin bushing inner cylinder face, its stroke can promote No. one pilot valve inner spool 93 and move backward, makes No. one pilot valve second air chamber 95 and No. one pilot valve first air chamber 91 UNICOM.

See Fig. 7, Figure 14, described No. one gas control sliding spool valve can be by: before traveller valve seat 32, No. one traveller 60, traveller sealing ring 61, No. one traveller return spring 64, No. one traveller, after blocking technological holes screw 58, No. one traveller, blocking technological holes screw 63 forms.Traveller valve seat 32 is placed in control valve housing 29.Six traveller sealing rings 61 are arranged in six grooves of No. one traveller 60 cylindrical respectively, and No. one traveller 60 is placed in traveller valve seat 32 with traveller sealing ring 61.No. one traveller return spring 64 is placed in the rear end of No. one traveller 60.

See Figure 14, Figure 15, have intermediate gas flow path in No. one traveller 60, No. one traveller 60 position shown in Figure 14 is provided with air flue air inlet 62 and No. one middle air flue venthole 59 of traveller in the middle of No. one traveller.In No. one traveller 60, intermediate gas flow path two end fabrication hole uses blocking technological holes screw 63 shutoff after blocking technological holes screw 58, No. one traveller before No. one traveller respectively.

See Figure 15, Figure 19, after No. one traveller 60 front end air chamber is by No. one pilot valve inflation, No. one traveller 60 moves backward.

See Figure 14, Figure 18, when making it communicate with air after No. one traveller 60 front end air chamber is by No. one pilot valve venting, No. one traveller 60 moves forward return under the effect of No. one traveller return spring 64.

See two positions of Figure 14-15, No. one traveller 60 in front and back, form the gas channel of the different conducting state of two-way respectively.

See Fig. 1, Fig. 5, the below of block assembly 2, have the one trumpeter's handle 15 be fixed together with block assembly 2.Before one trumpeter's handle 15, be equipped with No. one trigger 14.The upper end of No. one trigger 14 is connected on the fulcrum of block assembly 2 with No. one trigger bearing pin 56, and forming can around the flexible connection of this fulcrum, and the lower end of No. one trigger 14 can swing in finger ring 13.

See Figure 15, Figure 19, pull No. one trigger 14 backward, round end nut 88 can promote by the stage casing of No. one trigger 14 backward, No. one pilot valve front valve core 89 is made to promote No. one pilot valve inner spool 93 backward, Compressed Gas in No. one pilot valve second air chamber 95 enters No. one pilot valve first air chamber 91, inflated to No. one traveller 60 front end by air chamber passage 96 before No. one traveller, No. one traveller 60 is subject to axial air pressure and promotes, the elastic force and the sliding-frictional resistance that overcome No. one traveller return spring 64 are rapidly to rear movement, and needleless injector is pulled the trigger fast.

See Fig. 5, Figure 14, Figure 18, when after release No. one trigger 14, No. one trigger 14, knob nut 88, No. one pilot valve spring base 87, No. one pilot valve front valve core 89, No. one pilot valve the 4th sealing ring 90 return forward under the effect of No. one pilot valve spring 86 elastic force, the Compressed Gas of No. one traveller 60 front end is by air chamber passage 96 before No. one traveller, No. one pilot valve first air chamber 91, No. one pilot valve steam vent 85 is discharged, now No. one traveller 60 two ends air pressure restores balance, No. one traveller 60 is under the effect of No. one traveller return spring 64, move forward to wait cock.

The advantage of such setting is: trigger No. one pilot valve by No. one trigger 14, No. one pilot valve controls compressed gas-driven No. one traveller 60, No. one gas control sliding spool valve control cylinder, can human or animal of short duration static time, realize pulling the trigger fast under the state that micro-hole jet shower nozzle 9 and human or animal's skin effectively contact.

The use that the present embodiment 2 provides No. one pilot valve controls compressed gas-driven No. one traveller 60, the continuous needleless syringe that No. one gas control sliding spool valve control cylinder actuation plunger pump pressurizes to medicinal liquid, can pull the trigger fast, rapidly medicinal liquid is expelled in the body of humans and animals with the mode accurate quantification of high pressure fluid column jet.

The syringe of the present embodiment 2 compared with prior art has following major advantage:

The present embodiment triggers No. one pilot valve by No. one trigger 14, No. one pilot valve controls compressed gas-driven No. one traveller 60, the method that No. one gas control sliding spool valve control cylinder actuation plunger pump pressurizes to medicinal liquid, can pull the trigger fast, make injection rapidly, the jet parameters of each percussion stablizes, multiple injection reproducible.

The pneumatic continuous needleless syringe that the present embodiment 2 provides, its work process is as follows:

See Figure 15, Figure 19.During percussion, No. one trigger 14 is pulled backward with hands, No. one trigger 14 promotes knob nut 88 backward, cause No. one pilot valve front valve core 89 to promote No. one pilot valve inner spool 93 to move backward, passage now between No. one pilot valve first air chamber 91 and No. one pilot valve steam vent 85 is closed by No. one pilot valve the 4th sealing ring 90, simultaneously Compressed Gas from air accumulator 1 through control valve air inlet 37, air flue air inlet 62 in the middle of No. one traveller, air flue venthole 59 in the middle of No. one traveller, No. one pilot valve air supply channel 57, No. one pilot valve inlet channel 81, No. one pilot valve second air chamber 95, No. one pilot valve first air chamber 91, before No. one traveller, air chamber passage 96 enters into the front end face of No. one traveller 60, make the pneumatic thrust that a traveller 60 obtains backward, this thrust is greater than the elastic force of No. one traveller return spring 64 and the sliding-frictional resistance of traveller, No. one traveller 60 is made to be rapidly to rear movement.

See Fig. 7, Figure 13, Figure 15.When No. one traveller 60 moves to position shown in Figure 15, Compressed Gas from air accumulator 1 through control valve air inlet 37, master cylinder port 33 enters into piston 23 master cylinder below, promote piston 23 to travel forward, 24 driven forward plungers 27 are overlapped in the interlock be integrally connected with piston 23, plunger 27 reach makes to produce high pressure in liquid plunger displacement pump, liquid feed valve valve body 6 is closed by liquid feed valve steel ball 45 under the elastic force and the intrinsic pressure power effect of liquid plunger displacement pump of liquid feed valve spring 47 simultaneously, the elastic force that liquid valve steel ball 50 overcomes liquid valve spring 48 under the intrinsic pressure power effect of liquid plunger displacement pump moves forward the sealing surface leaving liquid valve valve body 8 makes liquid outlet channel open, medicinal liquid enters in humans and animals body through the jet microporous high speed injection of micro-hole jet shower nozzle 9.

See Fig. 7, Figure 13, Figure 15.In the process of injection, the gas of piston 23 side circular cylinder is got rid of by steam vent 31 through circular cylinder port 28, and the gas of piston 23 front end is got rid of through ring flange passage 53.

See Figure 15.After the step in the middle part of plunger 27 contacts with the rear end face of terminal screw after plunges pump body 43, plunger 27 stops moving forward, and injection stops.

See Figure 14, Figure 18.After having injected, discharge No. one trigger 14, No. one trigger 14, knob nut 88, No. one pilot valve spring base 87, No. one pilot valve front valve core 89, No. one pilot valve the 4th sealing ring 90 is back into forward wait cock by the elastic force of No. one pilot valve spring 86, No. one pilot valve inner spool 93, No. one pilot valve the 6th sealing ring 94 under the promotion of No. one pilot valve second air chamber 95 internal gas pressure forward, No. one pilot valve second air chamber 95 and No. one pilot valve first air chamber 91 cut off by No. one pilot valve the 6th sealing ring 94, make Compressed Gas cannot from No. one pilot valve second air chamber 95 to No. one pilot valve first air chamber 91.Gas air chamber passage 96, No. one pilot valve first air chamber 91, No. one pilot valve steam vent 85 before No. one traveller of No. one traveller 60 front end is discharged, make the air pressure thrust-balancing of No. one traveller 60 axis, No. one traveller 60 moves forward under the promotion of No. one traveller return spring 64 elastic force.

See Fig. 7, Figure 14, when No. one traveller 60 moves to position shown in Figure 14, the gas after piston 23 in master cylinder is discharged by steam vent 31 through master cylinder port 33.

See Fig. 7, Figure 14, simultaneously Compressed Gas enters into the circular cylinder of piston 23 side from control valve air inlet 37 air flue venthole 59 in the middle of air flue air inlet 62, No. one traveller, circular cylinder port 28 in the middle of No. one traveller, piston 23 is under the promotion of the pneumatic thrust of side circular cylinder, and piston 23 moves backward.

See Figure 13, Figure 14, piston 23 is in the process of movement backward, and the negative pressure that piston 23 front end face is formed, by ring flange passage 53 suck air, eliminates the negative pressure resistance of piston 23 front end face.

See Figure 13, the interlock be integrally connected with piston 23 is overlapped 24 and is pulled back plunger 27, move after plunger 27 and make to produce negative pressure in liquid plunger displacement pump, simultaneously liquid valve steel ball 50 contacts with the sealing surface of liquid valve valve body 8 and seals under elastic force and the negative pressure combined effect in liquid plunger displacement pump of liquid valve spring 48, the elastic force overcoming liquid feed valve spring 47 under the suction function of liquid feed valve steel ball 45 in liquid plunger displacement pump leaves sealing surface makes feed pathway open, and medicinal liquid is inhaled in liquid plunger displacement pump through medicinal liquid delivery hose 5, liquid feed valve valve body 6.

See Figure 14, when piston 23 moves to position shown in Figure 14, after the rear end face of piston 23 contacts with annular stop circle 42, piston 23 stops moving backward, the medicinal liquid of liquid plunger displacement pump inspiration simultaneously stops, when the precession degree of depth of the air accumulator 1 or adjustment air accumulator 1 of changing different length can the stroke of accurate control piston 23, control plunger 27 stroke simultaneously, make each injected dose precisely controlled.

Embodiment 3:

The pneumatic continuous needleless syringe that the gas control sliding spool valve that the present embodiment 3 provides controls, be provided with No. two pilot valves different from embodiment 2 structure, No. two gas control sliding spool valves, No. two trigger 16, two trumpeter's handles 17, No. two trigger return spring 69, two trumpeter's handle return springs 78, and other main element mutually isostructural with embodiment 1.Specific as follows:

See Fig. 7, Figure 16, Figure 22, be provided with female thread in control valve housing 29 rear and front end, control valve housing 29 front end female thread is connected with the external screw thread of No. two control valve shutoff screws 71, with No. two control valve shutoff screw sealing rings 70, junction is sealed.

See Figure 20, described No. two pilot valves can be by: No. two pilot valve housings 100, No. two pilot valve spring bases 98, No. two pilot valve bodies 104, No. two pilot valve cores 109, knob nut 88, No. two pilot valve springs 110, No. two pilot valve first sealing rings 101, No. two pilot valve second sealing rings 102, No. two pilot valve the 3rd sealing rings 105, No. two pilot valve the 4th sealing rings 108 form.

See Fig. 7, Figure 16, Figure 22, there is external screw thread No. two pilot valve housing 100 front ends, be connected with control valve housing 29 rear end female thread with the external screw thread of No. two pilot valve housing 100 front ends, to be tightly connected position with No. two pilot valve second sealing rings 102, No. two pilot valves to be contained in the rear end of control valve housing 29.

See Figure 20, No. two pilot valve housings 100 are in step-like cylinder, the little cylinder in its rear end is the guide pin bushing that No. two pilot valve cores 109 slide, its front end large cylinder is built-in with No. two pilot valve bodies 104, No. two pilot valve first sealing rings 101, No. two pilot valve the 3rd sealing rings 105, by No. two pilot valve first sealing rings 101, No. two pilot valve bodies 104 seal and are retained in No. two pilot valve housings 100 by No. two pilot valve the 3rd sealing rings 105, No. two pilot valve bodies 104 and No. two pilot valve housings 100 form No. two pilot valve air chambers 107, No. two pilot valve bodies 104 are provided with No. two traveller rear gas chamber path 10s 6 from No. two pilot valve air chamber 107 to No. two travellers 74 rear ends.

See Figure 20, the step place of No. two pilot valve core 109 external cylindrical surfaces is equipped with No. two pilot valves the 4th sealing ring 108, No. two pilot valve the 4th sealing rings 108 can not move axially on the face of cylinder of No. two pilot valve cores 109, and being jointly placed in No. two pilot valve housings 100, the external diameter of No. two pilot valve the 4th sealing rings 108 is greater than the internal diameter of No. two little cylinder guide pin bushings in pilot valve housing 100 rear end.

See Figure 16, Figure 20, No. two pilot valve bodies 104 and No. two corresponding positions of pilot valve housing 100 shown in Figure 20 are provided with No. two pilot valve inlet channels 103, No. two pilot valve inlet channels 103 and communicate with No. two pilot valve air supply channels 77 outside No. two pilot valve housings 100 through No. two pilot valve housings 100.

See Figure 21, No. two pilot valve core 109 front ends have tapered, the tapered valve seat of corresponding No. two pilot valve bodies 104.When No. two pilot valve cores 109 move forward make its tapered to contact the tapered valve seat of No. two pilot valve bodies 104 completely time, No. two pilot valve inlet channels 103 are closed, and No. two pilot valve exhaust passages 99 are opened.

See Figure 20, the diameter of No. two pilot valve core 109 back end cylindrical is less than the internal diameter of No. two little cylinder guide pin bushings in pilot valve housing 100 rear end, and its gap is enough to satisfied No. two pilot valves and controls passing through of air-flow.No. two pilot valve core 109 tail ends stretch out No. two little cylinder guide pin bushings in pilot valve housing 100 rear end, screw thread is had at its tail end, No. two pilot valve spring bases 98 are enclosed within its cylinder position of stretching out, between No. two pilot valve housings 100 and No. two pilot valve spring bases 98, be provided with No. two pilot valve springs 110, then be connected with the threads of No. two pilot valve cores 109 with round end nut 88 and lock.

See Figure 20, No. two pilot valve springs 110 make No. two pilot valves the 3rd parts 109 be in wait cock backward, and No. two pilot valve exhaust passages 99 are closed by No. two pilot valves the 4th sealing ring 108.

See Fig. 7, Figure 16, described No. two gas control sliding spool valves can be by: traveller valve seat 32, No. two travellers 74, traveller sealing ring 61, No. two traveller return springs 76 form.Six traveller sealing rings 61 are arranged in six grooves of No. two traveller 74 cylindricals respectively, and No. two travellers 74 are placed in traveller valve seat 32 with traveller sealing ring 61, and No. two traveller return springs 76 are placed in No. two traveller 74 rear ends.

See Figure 16, have intermediate gas flow path in No. two travellers 74, No. two traveller 74 positions shown in Figure 16 are provided with air flue air inlet 75 and No. two middle air flue ventholes 73 of travellers in the middle of No. two travellers.In No. two travellers 74, intermediate gas flow path front-end process hole is without shutoff, is used for No. two traveller 74 front end inflations.

See Figure 17, when making it communicate with air after No. two traveller 74 rear end air chambers are by the venting of No. two pilot valves, No. two travellers 74 overcome the elastic force of No. two traveller return springs 76 under the air pressure promotion of No. two traveller 74 front end air chambers and sliding-frictional resistance is moved backward.

See Figure 16, after No. two traveller 74 rear end air chambers are by No. two pilot valve inflations, No. two travellers 74 move forward return under the effect of No. two traveller return springs 76.

See Figure 16, Figure 17, No. two travellers 74, in two positions of front and back, form the gas channel of the different conducting state of two-way respectively.

See Fig. 2, Fig. 3, Fig. 6, Figure 16, Figure 17, described two trumpeter's handles 17 are arranged on the below of block assembly 2, two trumpeter's handles 17 with the cylindroid outside control valve housing 29 for the track that slides axially, can along the axis direction of control valve housing 29 slide anteroposterior in certain stroke, but can not radially swing, being provided with two trumpeter's handle return springs 78 in cylindrical shell and between control valve housing 29 after two trumpeter's handles 17, making two trumpeter's handles 17 be in the position of rear end when can not get forward thrust.

See Fig. 2, Fig. 3, Fig. 6, Figure 16, Figure 17, described No. two triggers 16 are arranged on before two trumpeter's handles 17, the upper end of No. two triggers 16 is connected on the strong point that stretches out forward two trumpeter's handle 17 upper ends with No. two trigger bearing pins 68, formation can around the flexible connection of this fulcrum, and the lower end of No. two triggers 16 can swing in finger ring 13.No. two triggers 16 are provided with No. two trigger return springs 69, the pole of playing safety effect of stretching out before the front end of No. two triggers 16 is oriented, when pulling No. two triggers 16 backward, the pole that No. two trigger 16 front ends are stretched out leaves the insurance step 67 arranged below cylinder block, discharge No. two triggers 16, No. two triggers 16 self-return under the effect of No. two trigger return springs 69.

See Figure 17, Figure 21, when when also appropriateness compresses micro-hole jet shower nozzle 9 with human or animal's contact skin, after pulling No. two triggers 16 backward, two trumpeter's handles 17 are when obtaining forward thrust, two trumpeter's handles 17 are along the axial forward slip of control valve housing 29, No. two triggers 16 and two trumpeter's handles 17 synchronously move forward together, when two trumpeter's handle 17 rear ends are pressed onto round end nut 88 and by No. two pilot valve core 109 driven forward, after making its tapered to contact the tapered valve seat of No. two pilot valve bodies 104 completely, the Compressed Gas of No. two traveller 74 rear end air chambers is by No. two traveller rear gas chamber path 10s 6, No. two pilot valve exhaust passages 99 are discharged, cause the axial air pressure thrust disequilibrium of No. two travellers 74, the Compressed Gas of No. two traveller 74 front end air chambers promotes No. two travellers 74 and overcomes the elastic force of No. two traveller return springs 76 and sliding-frictional resistance is rapidly to rear movement, needleless injector is pulled the trigger fast.

See Figure 16, Figure 20, when effectively not contacting with human or animal's skin at micro-hole jet shower nozzle 9, two trumpeter's handles 17 can not get thrust forward, two trumpeter's handles 17 move backward under the effect of the elastic force of two trumpeter's handle return springs 78, after round end nut 88 is left in two trumpeter's handle 17 rear ends, No. two pilot valve cores 109 return backward under the effect of No. two pilot valve springs 110, No. two pilot valve the 4th sealing rings 108 make No. two pilot valve exhaust passages 99 close, No. two pilot valve inlet channels 103 are by No. two traveller rear gas chamber path 10s 6 and No. two traveller 74 rear end air chamber UNICOMs, Compressed Gas is made to enter the rear end of No. two travellers 74, the now axial air pressure thrust-balancing of No. two travellers 74, under the effect of No. two traveller return springs 76, No. two travellers 74 are advanced to wait cock.

When effectively contacting at micro-hole jet shower nozzle 9 and human or animal's skin and appropriateness compresses, pull No. two triggers 16 backward, now two trumpeter's handles 17 can move forward together with No. two triggers 16 when pushing away forward with hands; When not pulling No. two triggers 16, two trumpeter's handles 17 cannot be moved forward by pole the withstanding of stretching out before No. two triggers 16, and percussion can not be carried out; After micro-hole jet shower nozzle 9 is separated with the human or animal be injected, micro-hole jet shower nozzle 9 can not get the counteracting force of human or animal, move backward under two trumpeter's handle return spring 78 effects that two trumpeter's handles 17 are arranged in its back-end, No. two pilot valves get back to wait cock, stop injection.

The advantage of such setting is: when also appropriateness compresses micro-hole jet shower nozzle 9 with human or animal's contact skin, pull No. two triggers 16 backward, driven forward two trumpeter handle 17, two trumpeter's handles 17 meeting forward slip, No. two pilot valves can be triggered in two trumpeter's handle 17 rear ends, No. two pilot valves control compressed gas-driven No. two travellers 74, realize automatic firing.Aerodynamic slide column valve make percussion rapidly, the jet parameters of each percussion stablizes, inject continuously reproducible.With No. two trigger 16 safety lock two trumpeter handles 17, after need pulling No. two triggers 16 during percussion, could promote the pressure strikings that move forward of two trumpeter's handles 17 and send out, this percussion method improves the safety of injection, reliability, effectiveness, prevents mistakenly hit from sending out waste medicinal liquid.

When to compoundanimal liquid medicine injection, sometimes inconvenient fixing to single animal enforcement protection, automatic firing can make injection operation simply easy when protecting fixing to animal inconvenience enforcement.

The pneumatic continuous needleless syringe that the aerodynamic slide column valve that the present embodiment 3 provides controls, can be expelled to medicinal liquid in the body of humans and animals with the mode accurate quantification of high pressure fluid column jet fast and automatically.

The pneumatic continuous needleless syringe that the present embodiment 3 provides, compared with prior art has following major advantage:

The present embodiment adopts can two trumpeter's handles 17 of forward slip, and with No. two trigger 16 safety lock two trumpeter handles 17, No. two triggers 16 need be pulled during percussion and promote two trumpeter's handles 17 simultaneously and move forward, after after two trumpeter's handles 17, side pressure contacts No. two pilot valves, trigger No. two pilot valves, No. two pilot valves control compressed gas-driven No. two travellers 74, automatically percussion is started, in the quick percussion of embodiment 2, injection rapidly, the jet parameters of each percussion is stablized, on the reproducible basis of multiple injection, further effectively to contact with the skin of humans and animals at micro-hole jet shower nozzle and realize automatic firing under having the state necessarily compressed complete injection, improve the safety of injection, reliability, effectiveness, prevent mistakenly hit from sending out waste medicinal liquid.Especially when fixing to animal inconvenience enforcement protection, make injection operation simply easy.

The pneumatic continuous needleless syringe that the present embodiment 3 provides, its work process is as follows:

See Fig. 3, Figure 13, Figure 16, Figure 17, during percussion, micro-hole jet shower nozzle 9 is withstood the human or animal that will inject, No. two triggers 16 are pulled backward with hands, insurance step 67 is left in No. two trigger 16 front ends, now driven forward two trumpeter handle 17, two trumpeter's handle 17 can move forward along the axis of control valve housing 29.As do not pull backward No. two triggers 16 make its front end leave insurance step 67, two trumpeter's handle 17 can not along the axial forward slip of control valve housing 29, No. two triggers 16 now play the safety effect controlling percussion.

See Figure 17, Figure 21, after the rear end of two trumpeter's handles 17 moves forward compression round end nut 88, the now tapered face seal tapered valve seat of No. two pilot valve bodies 104 of No. two pilot valve core 109 front ends, No. two pilot valve inlet channels 103 and No. two pilot valve air chambers 107 are cut off, No. two traveller 74 backend gas are through No. two traveller rear gas chamber path 10s 6, No. two pilot valve air chambers 107, No. two pilot valve exhaust passages 99 are discharged, because No. two traveller 74 front ends are by No. two traveller front aperture 72 compressed air suitses, the now axial air pressure thrust disequilibrium of No. two travellers 74, the elastic force that No. two travellers 74 overcome No. two traveller return springs 76 is rapidly to rear movement, start automatic firing.

See Figure 13, Figure 17, when No. two travellers 74 move to position shown in Figure 17, Compressed Gas from air accumulator 1 through control valve air inlet 37, master cylinder port 33 enters into piston 23 master cylinder below, promote piston 23 to travel forward, 24 driven forward plungers 27 are overlapped in the interlock be integrally connected with piston 23, plunger 27 reach makes to produce high pressure in liquid plunger displacement pump, liquid feed valve valve body 6 is closed by liquid feed valve steel ball 45 under the pressure effect in the elastic force and liquid plunger displacement pump of liquid feed valve spring 47 simultaneously, under pressure effect in liquid plunger displacement pump, the elastic force that liquid valve steel ball 50 overcomes liquid valve spring 48 moves forward the sealing surface leaving liquid valve valve body 8, liquid outlet channel is opened, medicinal liquid enters in humans and animals body through the jet microporous high speed injection of micro-hole jet shower nozzle 9.

See Figure 13, Figure 17, in the process of injection, the gas of piston 23 side circular cylinder is got rid of by steam vent 31 through circular cylinder port 28, and the gas of piston 23 front end is got rid of through ring flange passage 53.

See Figure 13, Figure 17, after the step in the middle part of plunger 27 contacts with the rear end face of terminal screw after plunges pump body 43, plunger 27 stops moving forward, and injection stops.

See Figure 16, Figure 20, after having injected, micro-hole jet shower nozzle 9 leaves the human or animal be injected, move after two trumpeter's handle return springs 78 promote two trumpeter's handles 17, round end nut 88 is separated with two trumpeter's handles 17, No. two No. two pilot valve cores 109 move backward under the elastic force effect of No. two pilot valve springs 110, No. two pilot valve air chambers 107 and No. two pilot valve exhaust passages 99 cut off by No. two pilot valves the 4th sealing ring 108 on No. two pilot valve cores 109, Compressed Gas in air accumulator 1 is through control valve air inlet 37, No. two pilot valve air supply channels 77, No. two pilot valve inlet channels 103, No. two pilot valve air chambers 107, No. two traveller rear gas chamber path 10s 6 enter into No. two traveller 74 rear ends, the now axial air pressure thrust-balancing of No. two travellers 74, No. two travellers 74 move forward under the elastic force effect of No. two traveller return springs 76.

See Figure 16, when No. two travellers 74 move to position shown in Figure 16, the gas after piston 23 in master cylinder is discharged by steam vent 31 through master cylinder port 33.

See Figure 16, simultaneously Compressed Gas enters into the side circular cylinder of piston 23 from control valve air inlet 37 air flue ventholes 73 in the middle of air flue air inlets 75, No. two travellers, circular cylinder port 28 in the middle of No. two travellers, piston 23 is under the promotion of the pneumatic thrust of side circular cylinder, and piston 23 moves backward.

See Figure 13, Figure 16, piston 23 is in the process of movement backward, and the negative pressure that piston 23 front end face is formed, by ring flange passage 53 suck air, eliminates the negative pressure resistance of piston 23 front end face.

See Figure 13, Figure 16, the interlock be integrally connected with piston 23 is overlapped 24 and is pulled back plunger 27, move after plunger 27 and make to produce negative pressure in liquid plunger displacement pump, simultaneously liquid valve steel ball 50 contacts with the sealing surface of liquid valve valve body 8 and seals under elastic force and the negative pressure combined effect in liquid plunger displacement pump of liquid valve spring 48, the elastic force overcoming liquid feed valve spring 47 under the suction function of liquid feed valve steel ball 45 in liquid plunger displacement pump leaves sealing surface makes feed pathway open, and medicinal liquid is inhaled in liquid plunger displacement pump through medicinal liquid delivery hose 5, liquid feed valve valve body 6.

See Figure 16, when piston 23 moves to position shown in Figure 16, after the rear end face of piston 23 contacts with annular stop circle 42, piston 23 stops moving backward, the medicinal liquid of liquid plunger displacement pump inspiration simultaneously stops, when the precession degree of depth of the air accumulator 1 or adjustment air accumulator 1 of changing different length can the stroke of accurate control piston 23, control plunger 27 stroke simultaneously, make each injected dose precisely controlled.

Claims

1. the pneumatic continuous needleless syringe of a gas control sliding spool valve control, comprise main element, it is characterized in that being provided with the pilot valve triggered with the trigger in main element or handle, and be placed in the gas control sliding spool valve in the control valve housing (29) of main element.

2. pneumatic continuous needleless syringe according to claim 1, is characterized in that described gas control sliding spool valve is made up of blocking technological holes screw (63), No. one traveller return spring (64) after blocking technological holes screw (58), No. one traveller before being contained in No. one traveller (60) of traveller valve seat inside, traveller sealing ring (61), No. one traveller.

3. pneumatic continuous needleless syringe according to claim 2, it is characterized in that front end inflation or the venting of No. one described traveller (60) control by adopting the pilot valve of two position three-way valve, the air pressure of this traveller end face is changed, to control the movement of this traveller in traveller valve seat.

4. pneumatic continuous needleless syringe according to claim 1, it is characterized in that described gas control sliding spool valve by being contained in No. two travellers (74) of traveller valve seat inside, traveller sealing ring (61), No. two traveller return springs (76) form.

5. pneumatic continuous needleless syringe according to claim 4, is characterized in that the rear end venting of No. two described travellers (74) or inflation are controlled by the pilot valve of two position three-way valve.

6. pneumatic continuous needleless syringe according to claim 1, is characterized in that described control valve housing (29), cylindrical shape inside it, traveller valve seat (32) is housed; Be cylindrical or prismatic outside it, outside this, handle be housed.

7. pneumatic continuous needleless syringe according to claim 6, it is characterized in that described handle with the cylindroid of control valve housing (29) outside for the track that slides axially, can along the axis direction of control valve housing (29) slide anteroposterior in certain stroke, but radially can not swing, after handle, in cylindrical shell and between control valve housing (29), be provided with handle return spring.

8. pneumatic continuous needleless syringe according to claim 7, it is characterized in that the strong point that described handle upper end is stretched out forward installs trigger with trigger bearing pin (68), the lower end of trigger can swing in finger ring (13), trigger is provided with No. two trigger return springs (69), the pole of playing safety effect of stretching out before the front end of trigger is oriented.

9. pneumatic continuous needleless syringe according to claim 1, it is characterized in that the external cylindrical surface stage casing of the air accumulator (1) in main element is equipped with sealing ring (39) after sealing ring (41) before air accumulator, air accumulator, sealing position, front and back is not isometrical, utilizes the axial compressive force difference of not isometrical generation that air accumulator (1) is made itself and stepped cylinder (25) auto lock after importing Compressed Gas.

10. pneumatic continuous needleless syringe according to claim 1, it is characterized in that the liquid plunger displacement pump in main element, it is provided with liquid valve valve body (8), the 3rd sealing gasket (51), plunger displacement pump threeway (7), the 4th sealing gasket (52), plunger displacement pump body (10), and they are in turn connected into one by screw thread; The external cylindrical surface in plunger displacement pump body (10) stage casing is equipped with the plunger displacement pump ring flange (12) be threaded.