CN110447618A

CN110447618A - Chemical spraying device

Info

Publication number: CN110447618A
Application number: CN201910769761.6A
Authority: CN
Inventors: 叶彬儒; 赵泽彬; 汪青松; 曾国琼
Original assignee: SHANGHAI HEBEN PHARMACEUTICAL CO Ltd
Current assignee: SHANGHAI HEBEN PHARMACEUTICAL CO Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2019-11-15
Anticipated expiration: 2039-08-20
Also published as: CN110447618B

Abstract

The invention discloses a kind of chemical spraying devices, which is characterized in that including first handle；Fixedly connected part, the fixedly connected part are connect with the first handle；Medicament cartridge, the medicament cartridge are connect with the fixedly connected part；Dosage regulating part, the dosage regulating part are connect with the fixedly connected part；Piston rod, the piston rod sequentially pass through the dosage regulating part and fixedly connected part and are inserted in the medicament cartridge, by pushing the piston rod to realize quantitative spray under the control of the dosage regulating part.The chemical spraying device can spray the medical fluid of designated volume, achieve the purpose that quantitative application；And it is small in size easy to carry, it can be connect with any device for storing liquid.

Description

Chemical spraying device

Technical field

The present invention relates to a kind of chemical spraying devices.

Background technique

Trunk pesticide application technology be generally by tree body transpiration pull or ambient pressure, by the pesticide inputted into tree body, Nutrient, growth regulator or other substances are transported to each position of tree body, to reach prevention and treatment pest and disease damage, strengthen battalion Support, coordinate plant growth the purpose of, this technology have become gardens prevention and treatment a kind of important means.To trunk application or When fertilising, medicament is imported in trees body by spraying equipment or surface of trees, medicament are fast under tree body interior environmental conditions Speed is distributed to each portion of tree body, and compared with routinely the surfaces application method such as be sprayed, dusting, the method has not by the nature ring such as rainfall Border influences and trees height, the limitation for endangering position, reduces pollution of the pesticide to environment, does not kill pest natural enemy, protection people and animals The advantages that safe.

Although current more common spraying equipment is convenient for carrying, is cheap, but rate of administration is slow, low efficiency, note Dose can not be controlled effectively, will form very big waste；Spraying equipment also can control injection amount, and delivery rate Fastly, but structure is complicated, it has not been convenient to carry and expensive.Also, many spraying equipments, which all have, is directly inserted into trunk Injection needle, be easy to cause injection head to block in this way.

Summary of the invention

Purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of chemical spraying device of adjustable dosage.

In order to achieve the above object, being achieved through the following technical solutions:

A kind of chemical spraying device, which is characterized in that including

First handle；

Fixedly connected part, the fixedly connected part are connect with the first handle；

Medicament cartridge, the medicament cartridge are connect with the fixedly connected part；

Dosage regulating part, the dosage regulating part are connect with the fixedly connected part；

Piston rod, the piston rod sequentially pass through the dosage regulating part and fixedly connected part and are inserted in the medicament cartridge It is interior, by pushing the piston rod to realize quantitative spray under the control of the dosage regulating part.

Preferably, the fixedly connected part includes outer tube and inner tube, and one end of said inner tube is connected to the interior of the outer tube On wall, the space for accommodating the medicament cartridge is formed between said inner tube and the outer tube, the medicament cartridge is threadingly attached to On the inner wall of the outer tube；The other end of said inner tube has notch, and said inner tube is made to have elasticity.

Preferably, the notch axially extends, and said inner tube is made to be divided into multiple arcs plate.

Preferably, the interior diameter of said inner tube is gradually reduced from the one end for being connected to the outer tube to the other end.

Preferably, jet head and return unit are equipped in the medicament cartridge, the jet head includes sparge pipe and baffle, described One end that baffle is vertical at the sparge pipe is closed, and the other end of the jet head is set as the first liquid outlet；The spray Liquid pipe is movably disposed in the medicament cartridge；The return unit is supported around sparge pipe setting, one end in medicament cartridge Inner wall, the other end support the baffle, are equipped with the first inlet with the neighbouring part of the return unit on the sparge pipe, Medical fluid can be flowed into the sparge pipe by first inlet and be sprayed outward by first liquid outlet.

Preferably, infusion channel is equipped in the medicament cartridge, the infusion channel has the second liquid outlet and the second feed liquor Mouthful, second liquid outlet be set to the medicament cartridge inner wall opposite with the return unit on, second inlet be set to On the opposite medicament cartridge inner wall of the baffle；The baffle, which is located at, stops medical fluid stream when blocking the second inlet position Enter in the infusion channel, medical fluid can be from second inlet when baffle stress is moved to the second inlet left side Into in the infusion channel, the return unit when the baffle is moved to the left compressive deformation and generate elastic force, the elasticity Power, which has, is shot back the return unit to the position for blocking second inlet.

Preferably, the return unit includes spring and spring spool, is equipped with the spring, the bullet in the spring spool Spring is set on the sparge pipe.

Preferably, the interior diameter of the medicament cartridge at second inlet is less than the diameter of the baffle, to resist The baffle makes it block second inlet；The interior diameter of the medicament cartridge is from second inlet to the medicament Cylinder tail portion is gradually increased.

Preferably, the dosage regulating part includes regulating part, and the regulating part includes limiting section, the appearance of the limiting section Face is equipped with the first limited block, and when the limiting section passes through the inner tube of the fixedly connected part, the notch in said inner tube makes institute It states limiting section to be inserted in wherein, first limited block limits the limiting section and slides axially.

Preferably, the limiting section is arranged around the piston rod, and the inner surface of the limiting section is equipped with the second limited block, Second limited block is along the circumferential direction distributed to limit the axial movement distance of the piston rod.

Preferably, the piston rod outer surface is equipped with convex block, and the limiting section rotation makes different second limited blocks When being aligned with the convex block, second limited block is different from the axial movement of convex block distance.

Preferably, different second limited blocks is from the same sagittal plane in the limiting section to the convex block edge It is axially extending, keep the length of different second limited blocks elongated clockwise or counterclockwise or shortens.

Preferably, the dosage regulating part further includes graded tube, and the graded tube is arranged around the limiting section, the limit Third limited block is additionally provided on the outer surface in position portion, the scale pipe internal surface is equipped with groove, the groove and the third The shape of limited block is adapted, and the graded tube is made to be connected to the regulating part outer surface and rotate with the regulating part.

Preferably, the overall diameter that the limiting section is surrounded with the part of the graded tube is greater than other portions of the limiting section One end of the overall diameter divided, the graded tube is equipped with inside flange, makes the limiting section overall diameter is biggish to be partially submerged into institute It states in graded tube.

Preferably, the regulating part further includes adjustment portion, and the adjustment portion and the limiting section are surrounded with the graded tube Part be connected, to seal the port of the regulating part.

Preferably, the adjustment portion is equipped with through-hole identical with the piston rod cross sectional shape.

Preferably, the dosage regulating part further includes reading part, and the reading part is arranged around the graded tube, described solid Determining connector includes outer tube, and the reading part is connected to one end of the outer tube；It is circumferentially square on the outer surface of the graded tube To number is equipped with, the reading part is equipped with reading window and shows the number on the graded tube.

Preferably, the dosage regulating part further includes reading part, and the inner wall of the reading part is equipped with the 4th limited block, institute It states the 4th limited block to match with the third limited block, limits starting point of the regulating part relative to the reading part rotation And/or terminal.

Preferably, the piston rod is hollow structure, and the top of the piston rod is set as piston, on the outer wall of the piston Equipped with sealing ring；It is equipped with third liquid outlet close to the part of the piston on the piston rod, the end of the piston rod is equipped with Third inlet.

Preferably, the chemical spraying device further includes second handle, and the bottom of the first handle and second handle passes through company Outbound is hinged, and elastic component is equipped between the first handle and second handle.

Preferably, the elastic component is torsional spring.

Preferably, the chemical spraying device further includes securing supports, and the securing supports are connected with the second handle It connects, the securing supports are provided with through-hole so that the piston rod to be fixed on wherein.

The present invention provides a kind of chemical spraying device, which can be connect by transfusion catheter with any liquid storage container, It is small in size easy to carry.It, can by the first handle and second handle of pinching pressure chemical spraying device after chemical spraying device is connect with trunk To spray the medical fluid of designated volume, achieve the purpose that quantitative application.And due to the air in trunk and inside chemical spraying device The medical fluid of designated volume will continuously can be input in trunk by air pressure environment.By the dosage for adjusting chemical spraying device Regulating part can spray the medical fluid of different volumes according to actual needs.Meanwhile the structure of the chemical spraying device is simple, and the speed that sprays Degree is fast.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of chemical spraying device of the invention.

Fig. 2 is the structural schematic diagram of another angle of chemical spraying device of the invention.

Fig. 3 is the main view of chemical spraying device of the invention.

Fig. 4 is the structural schematic diagram of the medicament cartridge of chemical spraying device of the invention.

Fig. 5 is the main view of the medicament cartridge of chemical spraying device of the invention.

Fig. 6 is cross-sectional view of the Fig. 5 at A-A, wherein the second inlet is in the open state.

Fig. 7 is cross-sectional view of the Fig. 5 at A-A, wherein the second inlet is in closed state.

Fig. 8 is the jet head of chemical spraying device of the invention and the structural schematic diagram of return unit.

Fig. 9 is the structural schematic diagram of the return unit of chemical spraying device of the invention.

Figure 10 is the structural schematic diagram of the piston rod of chemical spraying device of the invention.

Figure 11 is the fixedly connected part connecting with first handle and second handle and fixed branch of chemical spraying device of the invention The structural schematic diagram of support member.

Figure 12 is the structural schematic diagram of the fixedly connected part of chemical spraying device of the invention.

Figure 13 is the main view of the fixedly connected part of chemical spraying device of the invention.

Figure 14 is the fixedly connected part of chemical spraying device of the invention and the structural schematic diagram of dosage regulating part.

Figure 15 is the fixedly connected part of chemical spraying device of the invention connecting with first handle and the structure of dosage regulating part Schematic diagram.

Figure 16 is the structural schematic diagram of the dosage regulating part of chemical spraying device of the invention.

Figure 17 is the main view of the dosage regulating part of chemical spraying device of the invention.

Figure 18 is the structural schematic diagram of the regulating part of chemical spraying device of the invention.

Figure 19 is the main view of the regulating part of chemical spraying device of the invention.

Figure 20 is cross-sectional view of the Figure 19 at B-B.

Specific embodiment

The present invention is described in detail with reference to the accompanying drawing:

As shown in Figure 1-3, chemical spraying device of the invention include first handle 110, fixedly connected part 200, medicament cartridge 300, Dosage regulating part 400 and piston rod 500, wherein fixedly connected part 200 is connect with first handle 110, medicament cartridge 300 and dosage Regulating part 400 is connect with fixedly connected part 200 respectively；Piston rod 500 sequentially passes through dosage regulating part 400 and fixedly connected part It 200 and is inserted in medicament cartridge 300.Chemical spraying device of the invention passes through dosage adjustment portion by pushing piston rod to travel forward Control piston rod in medicament cartridge mobile specific distance reach so that the medical fluid of designated volume be released out of medicament cartridge The purpose being quantitatively administered.

As viewed in figures 5-8, jet head 310 and return unit 320 are equipped in medicament cartridge 300, jet head 310 includes sparge pipe 311 and baffle 312, one end that baffle 312 is vertical at sparge pipe 311 closed, the other end of jet head 310 is set as first Liquid outlet 313, return unit 320 are arranged around sparge pipe 311, and one end is supported in 300 inner wall of medicament, and the other end supports baffle 312, Return unit 320 is provided and coupled on baffle 312 around sparge pipe 311, the part neighbouring with return unit 320 on sparge pipe 311 Equipped with the first inlet 314, medical fluid is flowed by the first inlet 314 in sparge pipe 311 and by the first spray outward of liquid outlet 313 Out.Infusion channel 330 is equipped in medicament cartridge 300, infusion channel 330 has the second liquid outlet 332 and the second inlet 331, the Two liquid outlets 332 are set on the inner wall of the medicament cartridge 300 opposite with return unit 320, and the second inlet 331 is set to and baffle 312 On the inner wall of opposite medicament cartridge 300.Medical fluid can be from the second feed liquor when 312 stress of baffle is moved to the second 332 left side of inlet Mouthfuls 332 enter in infusion channels 330, return unit 320 when baffle 312 is moved to the left compressive deformation and generate elastic force, the bullet Property power have be shot back return unit 320 to the position for blocking the second inlet 331.Wherein, left and right side is shown in Fig. 6-7 Relative position.Baffle 312, which is located at when blocking the second 331 position of inlet, stops medical fluid to flow into the infusion channel, baffle 312 baffles when being pushed by medical fluid are in 331 left side of the second inlet to open wide the second inlet 331 and flow into medical fluid In infusion channel 330, return unit 320 makes baffle 312 be restored to the position for blocking the second inlet 331 after being shot back.Return unit 320 include spring 321 and spring spool 322, is equipped with spring in spring spool, spring is set on sparge pipe 311.

Piston rod 500 is hollow structure, and top is set as piston 510, is inserted in medicament cartridge 300.On 510 outer wall of piston Equipped with multiple sealing rings 511, the medical fluid in medicament cartridge is set to be not easy to flow out by the setting of sealing ring.Due to the bottom end for the connector that sprays It is closed and piston sealing function, so that the pressure inside medicament cartridge is smaller；When without using chemical spraying device, spray connector Bottom be in the position for blocking the second inlet of infusion channel, as shown in fig. 7, then spray in connector without medical fluid, then medical fluid It can not flow out；It the medical fluid that is full of and travels forward while the forward pressure of medical fluid acts in medicament cartridge when pushing piston forward The bottom end of spray connector pushes forward spray connector, and infusion channel inlet is unimpeded at this time, and medical fluid is with the pressure in medicament cartridge Power flows to the second liquid outlet of infusion channel from the second inlet of infusion channel, then by the first inlet of spray connector into Enter to spray in connector, finally be sprayed outward from the first liquid outlet.The interior diameter of medicament cartridge at second inlet 315 is less than spray The base diameter of connector 310 can block the second inlet to resist the bottom of spray connector 310；Medicament cartridge it is interior straight The second inlet rises and is gradually increased to medicament cartridge tail portion without leave.

It is equipped with third liquid outlet 520 close to the part of piston 510 on piston rod 500, the end of piston rod 500 is equipped with third Inlet 530, third inlet 530 are connected to device for storing liquid by conduit, and medical fluid flows into piston rod from third inlet 530 In 500.The interior diameter of medicament cartridge 300 is larger at medicament cartridge tail portion, and when not pushing piston rod 500, piston 510 is in medicament cartridge The biggish position of 300 interior diameter, gap of the medical fluid that third liquid outlet 520 flows out between piston and medicament cartridge inner wall flow into In medicament cartridge；When piston rod 500 being pushed to travel forward, piston 510 travels forward while pushing the bottom of medical fluid and the connector 310 that sprays Portion sprays medical fluid.Under the action of switch valve 311, spray connector 310 is moved to the direction of piston 510, blocks infusion again Second inlet 315 in channel 520, piston 510 also returns to the biggish position of interior diameter of medicament cartridge 300 at this time, due to medicament Cylinder pressure is smaller, and medical fluid adds to inside medicament cartridge again.

Shown in Fig. 9-11, fixedly connected part 200 includes outer tube 210 and inner tube 220, and outer tube is fixed in one end of inner tube 220 On 210 inner wall, the space for accommodating medicament cartridge 300 is formed between inner tube 220 and outer tube 210, medicament cartridge 300 is connected through a screw thread In on the inner wall of outer tube 210.With notch 221 so that inner tube has elasticity, notch 221 prolongs the other end of inner tube 220 along axial direction It stretches, inner tube 220 is divided at least three pieces of arc panels 222.The interior diameter of inner tube 220 from be connected to one end of outer tube 210 to The other end is gradually reduced.

As shown in figures 12-18, dosage regulating part 400 includes regulating part 410, and regulating part 410 includes limiting section 411, limit Portion 411 is inserted in inner tube 220, and the outer surface of limiting section 411 is equipped with the first limited block 441；Limiting section 411 passes through inner tube When 220, the notch 221 in inner tube 220 makes inner tube have elasticity to which limiting section 411 can be inserted in wherein, the first limited block 441 Limitation limiting section 411 slides axially, and prevents regulating part 410 from skidding off in inner tube 220, while regulating part 410 can be relative to inner tube 220 Rotation.

Limiting section 411 is arranged around piston rod 500 so that piston rod 500 passes through inner tube while passing through limiting section 411 220, the inner surface of limiting section 411 is equipped with multiple second limited blocks 442, multiple second limited blocks 442 be along the circumferential direction distributed with Limit the axial movement distance of piston rod 500.500 outer surface of piston rod is equipped with convex block 540, the second different limit of distributing position Block 442 limits out the different axial movement distance of convex block 540, and axial movement distance is along the circumferential direction elongated or shortens.Convex block 540 different axial movement distances, the distance for causing piston to move forward in medicament cartridge change correspondingly, and release the volume of medical fluid Amount also changes, and has the function that adjust the dosage sprayed.

In the present embodiment, the second different limited blocks 442 is distributed uniformly and circumferentially, every piece of second limited block 442 it Between spacing distance it is identical, the second different limited blocks 442 is from the same sagittal plane in limiting section 411 to 540 edge of convex block Axially extending, the length of the second different limited blocks 442 is elongated clockwise or counterclockwise or shortens, such as Figure 18 institute Show.Therefore, it with the elongated of the length of the second limited block 442 or shortens, the forward axial movement distance of convex block 540 is with shortening Or it is elongated, so that piston shortens or elongated in the distance that medicament cartridge moves forward, the medicine liquid volume of release is become smaller or larger.

For the ease of the limit cooperation between the second limited block 442 and convex block 540, can will connect with the second limited block 442 One end of the convex block 540 of touching is set as being easy to limit and stuck and shape difficult to slide, for example, Y type as shown in Figure 8.

Dosage regulating part 400 further includes graded tube 420, and graded tube 420 is arranged around limiting section 411, outside limiting section 411 Third limited block 443 is additionally provided on surface, 420 inner surface of graded tube is equipped with groove (not shown), the groove and third The shape of limited block 443 is adapted, and is fixed on graded tube 420 on regulating part 410 and as regulating part 410 rotates together.Limit The overall diameter that position portion 411 is surrounded with the part of graded tube 420 is greater than the overall diameter of the other parts of limiting section 411, graded tube 420 One end be equipped with inside flange 421, make the overall diameter of limiting section 411 is biggish to be partially submerged into graded tube 420, thus will limit Position portion 411 is fixed in graded tube 420.

Regulating part 410 further includes adjustment portion 412, and adjustment portion 412 is surrounded with the part phase of graded tube 420 with limiting section 411 Connection, to seal the port of regulating part 410.Adjustment portion 412 is equipped with identical with the shape of 500 radial section of piston rod logical Hole, as shown in Figure 2.When needing to adjust spray value, spray by rotating adjustment portion 412 adjusting of liquid dose, therefore The outer surface of adjustment portion 412 is set as gear structure, is convenient for rotation process.

Dosage regulating part 400 further includes reading part 430, and reading part 430 is arranged around graded tube 420, and reading part 430 connects In one end of outer tube 210；Graduation mark and number are along the circumferential direction equipped on the outer surface of graded tube 420, reading part 430 is equipped with Read the number on the display graded tube 420 of window 431.The axial movement distance and medicament that can be realized in medicament cartridge according to piston The volume of cylinder calculates the medicine liquid volume amount that piston can be released to obtain the number and its unit on corresponding graded tube, thus Correspondingly axial movement distance of the setting piston rod 500 in regulating part 410.The inner wall for reading part 430 is equipped with the 4th limit Block 444, the 4th limited block 444 are matched with the third limited block 443 on limiting section 411, limit regulating part 410 relative to reading The starting point and/or terminal that pieces 430 rotates.

Chemical spraying device of the invention further includes second handle 120, and the bottom of first handle 110 and second handle 120 passes through Connecting pin 130 is hinged, and elastic component is equipped between first handle 110 and second handle 120, which is torsional spring, so that Initial position can be restored to after 120 relative motion of first handle 110 and second handle.

Chemical spraying device of the invention further includes securing supports 600, and securing supports 600 are connected with second handle 120 It connects, securing supports 600 are provided with through-hole so that piston rod 500 to be fixed on wherein.In the present embodiment, as shown in figure 9, fixed support Part 600 is set as ring structure, and piston rod 500, which passes through, is symmetrically equipped with limiting slot on the outer surface of the part of securing supports 600 550, the fixed block 610 that the inner wall of securing supports 600 is equipped with position and size and limiting slot 550 is adapted, fixed block 610 Matching with limiting slot 550 makes securing supports 600 clamp piston rod 500；It is additionally provided in securing supports 600 and is used to support work The fixing seat 620 of stopper rod.Therefore, it is pinched with hand when holding first handle and second handle, since the effect of securing supports will drive Piston rod travels forward.

Chemical spraying device of the invention further includes container bottle connector, container bottle connector include fixed cover, infusion connector and Air inlet, fixed cover can change according to the type of device for storing liquid, and infusion connector and air inlet are located on fixed cover, be connected by conduit Connect the catheter interface on infusion connector and piston rod.

In chemical spraying device of the invention, under the relative motion of first handle and second handle, by piston rod Second inlet imports medical fluid in piston rod from device for storing liquid, and medical fluid flows into medicament cartridge from the liquid outlet on piston rod；With The infusion channel and spray connector interaction in medicament cartridge, so that medical fluid is sprayed or stop medical fluid outflow.Pass through dose Regulating part adjusts the liquid volume of ejection, and rotation regulating part can make the second limited block on its inner wall while rotate, due to piston Bar is static relative to regulating part, when the second limited block of some length turns to the position matched with the convex block on piston rod When, convex block moves axially certain distance, so that piston mobile distance accordingly in medicament cartridge releases the medical fluid of certain volume, this When from reading window in read it is corresponding injection medical fluid volumetric quantities.Due to the change of the length of the second limited block make piston rod to The distance of preceding movement changes correspondingly, thus can according to the volume and piston of medicament cartridge in medicament cartridge moving distance, obtain piston Axial movement distance of the bar in regulating part, so as to be arranged in correspondence with distribution of second limited block in limiting section, also Obtain different spray value and its range.

"left", "right" of the present invention, " top ", " bottom ", "inner", "outside" are to clearly illustrate knot of the invention Structure and the relative concept used, are not to specific restriction of the invention.

Embodiment in the present invention is only used for that the present invention will be described, and is not construed as limiting the scope of claims limitation, Other substantially equivalent substitutions that those skilled in that art are contemplated that, all fall in the scope of protection of the present invention.

Claims

1. a kind of chemical spraying device, which is characterized in that including

First handle；

Piston rod, the piston rod sequentially pass through the dosage regulating part and fixedly connected part and are inserted in the medicament cartridge, By pushing the piston rod to realize quantitative spray under the control of the dosage regulating part.

2. chemical spraying device according to claim 1, which is characterized in that the fixedly connected part includes outer tube and inner tube, institute The one end for stating inner tube is connected on the inner wall of the outer tube, is formed between said inner tube and the outer tube and is accommodated the medicament cartridge Space, the medicament cartridge are threadingly attached on the inner wall of the outer tube；The other end of said inner tube has notch, makes described Inner tube has elasticity.

3. chemical spraying device according to claim 1, which is characterized in that jet head and return unit are equipped in the medicament cartridge, The jet head includes sparge pipe and baffle, and one end that the baffle is vertical at the sparge pipe is closed, the hydrojet The other end of head is set as the first liquid outlet；The sparge pipe is movably disposed in the medicament cartridge；The return unit surrounds Sparge pipe setting, one end are supported in medicament cartridge inner wall, and the other end supports the baffle, on the sparge pipe with it is described The neighbouring part of return unit is equipped with the first inlet, and medical fluid can be flowed into the sparge pipe and by described by first inlet First liquid outlet sprays outward.

4. chemical spraying device according to claim 3, which is characterized in that infusion channel is equipped in the medicament cartridge, it is described defeated Liquid channel has the second liquid outlet and the second inlet, and second liquid outlet is set to the medicament opposite with the return unit On cylinder inner wall, second inlet is set on the medicament cartridge inner wall opposite with the baffle；The baffle, which is located at, to be blocked Medical fluid is stopped to flow into the infusion channel when the second inlet position, the baffle stress is moved to second feed liquor Medical fluid can enter in the infusion channel from second inlet when on the left of mouthful, and the return unit is moved to the left in the baffle When compressive deformation and generate elastic force, the elastic force have be shot back the return unit to the position for blocking second inlet It sets.

5. chemical spraying device according to claim 4, which is characterized in that the medicament cartridge at second inlet it is interior Diameter is less than the diameter of the baffle, so that it is blocked second inlet to resist the baffle；The medicament cartridge it is interior straight Second inlet rises and is gradually increased to the medicament cartridge tail portion without leave.

6. chemical spraying device according to claim 2, which is characterized in that the dosage regulating part includes regulating part, the tune Saving part includes limiting section, and the outer surface of the limiting section is equipped with the first limited block, and the limiting section passes through described be fixedly connected When the inner tube of part, the notch in said inner tube is inserted in the limiting section wherein, and first limited block limits the limit Portion slides axially.

7. chemical spraying device according to claim 6, which is characterized in that the limiting section is arranged around the piston rod, institute The inner surface for stating limiting section is equipped with the second limited block, and second limited block is along the circumferential direction distributed to limit the piston rod Move axially distance.

8. chemical spraying device according to claim 7, which is characterized in that the piston rod outer surface is equipped with convex block, the limit When the rotation of position portion is aligned different second limited blocks with the convex block, the axial direction of second limited block and the convex block Moving distance is different.

9. chemical spraying device according to claim 8, which is characterized in that the dosage regulating part further includes graded tube, described Graded tube is arranged around the limiting section, is additionally provided with third limited block, table in the graded tube on the outer surface of the limiting section Face is equipped with groove, and the shape of the groove and the third limited block is adapted, and the graded tube is made to be connected to the adjusting Part outer surface and with the regulating part rotate.

10. chemical spraying device according to claim 6, which is characterized in that the regulating part further includes adjustment portion, the adjusting Portion is connected with the part that the limiting section is surrounded with the graded tube, to seal the port of the regulating part.

11. chemical spraying device according to claim 1, which is characterized in that the piston rod is hollow structure, the piston rod Top be set as piston, the outer wall of the piston is equipped with sealing ring；Part on the piston rod close to the piston is equipped with The end of third liquid outlet, the piston rod is equipped with third inlet.

12. chemical spraying device according to claim 1, which is characterized in that the chemical spraying device further includes second handle, described The bottom of first handle and second handle is hinged by connecting pin, and elasticity is equipped between the first handle and second handle Part.