CN110594146B - A plunger pump - Google Patents
A plunger pump Download PDFInfo
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- CN110594146B CN110594146B CN201911037222.XA CN201911037222A CN110594146B CN 110594146 B CN110594146 B CN 110594146B CN 201911037222 A CN201911037222 A CN 201911037222A CN 110594146 B CN110594146 B CN 110594146B
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- pump
- water
- water inlet
- turbine
- return
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 180
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 239000003814 drug Substances 0.000 claims description 29
- 239000007921 spray Substances 0.000 claims description 10
- 230000009471 action Effects 0.000 abstract description 4
- 239000008239 natural water Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 16
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000007924 injection Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
- B05B9/0406—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with several pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
- B05B9/0416—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with pumps comprising rotating pumping parts, e.g. gear pump, centrifugal pump, screw-type pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a plunger pump, and belongs to the technical field of pump equipment. The plunger pump solves the technical problems that the efficiency of the existing plunger pump is low when the suction stroke is large. The plunger pump comprises a pump body, wherein a pump water inlet chamber is formed in the pump body, one end of the pump body is fixedly connected with a liquid suction turbine, the liquid suction turbine is located at a pump water inlet of the pump water inlet chamber and comprises a shell, a volute chamber located in the shell and a turbine impeller located in the volute chamber, a total water inlet, a water return port and a water outlet communicated with the pump water inlet of the pump water inlet chamber are respectively formed in the volute chamber, the water return port is communicated with a water return outlet on the pump body through a water return pipe, and return water entering through the water return port can drive the turbine impeller to rotate. According to the technical scheme, the liquid suction turbine is arranged, so that the turbine impeller rotates at a high speed in the radial direction under the action of backwater, vacuum suction force is generated at the pump water inlet of the volute pump water inlet chamber, natural water suction is changed into power water suction, and the pump volumetric efficiency and the total efficiency of the plunger pump are improved.
Description
Technical Field
The invention belongs to the technical field of pump devices, and relates to a plunger pump.
Background
The plunger pump is one kind of water pump, and it relies on the plunger to reciprocate in the cylinder body to make the volume of sealed working chamber change to realize liquid suction and liquid pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like. And are therefore often used in hydraulic systems. The self-priming pump is widely applied to the industries of agricultural plant protection and cleaning machines, but has poor self-priming performance due to short stroke, particularly the application of a large-flow pump is limited, for example, when the self-priming pump is applied to a spraying machine, the spraying quantity of spray gun spray holes is limited, for example, the diameter of the spray holes is 6.00mm, the spraying quantity is 37L/min, the spraying quantity of 2 spray guns is only 74L/min, the pump flow of a conventional plunger pump is 120-150L/min, redundant water is mainly used for backwater stirring, and the flow and power waste are close to 40% -50% theoretically. Compared with a piston pump, the volumetric efficiency of the piston pump can reach 93% -96%, but the plunger pump only has 78% -80%, and how to utilize the backwater power in the piston pump is the direction of research institutions and enterprises in the industry for many years.
The research shows that when the water inlet pressure is increased by +0.3bar (0.03 MPa) at the negative pressure, for example, the water inlet pressure is near negative 3 meters, the pump efficiency/total efficiency is increased by more than 5%, the water inlet height (namely, the water inlet stroke) of the plunger pump produced by the current general enterprises is not 3 meters, or the plunger pump can absorb water at the negative 3 meters, but has the problems of small water outlet quantity, low efficiency, large pulsation and the like, and if a diving pump pressure is added for the positive pressure water supply test at 0.3bar, the water outlet quantity effect is obviously increased, and the pulsation is small. That is, when the water inlet pressure of the 100 LPM-200 LPM plunger pump for the plant protection machinery is negative pressure, the pump efficiency is obviously reduced, especially when the water absorption distance is more than-2 meters. Therefore, an impeller type submersible pump is added to a plurality of professional cleaning devices, water injection pumps, high-mountain fire-fighting water supply pumps and the like to realize positive pressure water supply so as to ensure higher system reliability and efficiency.
At present, when the high-flow plunger pump is applied to occasions such as high-mountain fire fighting, drip irrigation, oilfield water injection and sea water desalination, because of poor self-absorption, many users can supply water for the plunger pump with the pressure of more than 100LPM by adding a front-stage servo pump such as a submersible pump so as to improve the efficiency.
The patent in China (bulletin No. CN203809310U; bulletin day No. 2014-09-03) discloses an energy recovery booster pump, which comprises a motor, wherein the motor comprises a motor body and a motor output shaft, a centrifugal pump is arranged at the first end part of the motor body, the centrifugal pump comprises a centrifugal pump body and a centrifugal pump impeller, the centrifugal pump body is fixedly connected with the motor body, the centrifugal pump impeller is rotatably arranged on the motor output shaft, a turbine pump is arranged at the second end part of the motor body, the turbine pump comprises a turbine pump body and a turbine pump impeller, the turbine pump body is fixedly connected with the motor body, and the turbine pump impeller is rotatably arranged on the motor output shaft.
The energy recovery booster pump in the above patent document has a complicated structure, requires additional electric energy consumption by using a motor as a coupling and supporting body of the turbo pump, and has high manufacturing cost and use cost and large overall volume.
Disclosure of Invention
The invention aims at the problems existing in the prior art, and provides a plunger pump, which aims at solving the technical problems of improving the efficiency of the plunger pump and ensuring the compactness of the plunger pump.
The aim of the invention can be achieved by the following technical scheme:
A plunger pump comprises a pump body, wherein a pump water inlet chamber is formed in the pump body, and the plunger pump is characterized in that one end of the pump body is fixedly connected with a liquid suction turbine, the liquid suction turbine is located at a pump water inlet of the pump water inlet chamber and comprises a shell, a volute located in the shell and a turbine impeller located in the volute, a total water inlet, a water return port and a water outlet communicated with the pump water inlet of the pump water inlet chamber are formed in the volute respectively, the water return port is communicated with a water return outlet on the pump body through a water return pipe, and return water entering through the water return port can drive the turbine impeller to rotate.
The working principle is that the high-efficiency plunger pump in the technical scheme can be applied to a large-flow industrial water injection plunger pump, a sea water desalination plunger pump and other large-flow industrial displacement pumps, and also can be applied to the field of plant protection machinery in the agricultural machinery industry, such as a sprayer. When in use, the main water inlet, the water return port and the water outlet are respectively used for connecting the main water inlet, the pump water return and the pump water inlet chamber. The turbine impeller rotates radially at high speed under the action of backwater, so that vacuum suction force is generated and increased at the pump water inlet of the volute pump water inlet chamber, natural water absorption is changed into power water absorption, and the pump volumetric efficiency and the total efficiency of the plunger pump are improved.
In the plunger pump, the liquid suction turbine is a radial axial flow type micro turbine, and the radial dimension of the turbine impeller is 10-40 mm. Therefore, the liquid suction turbine and the turbine impeller in the technical scheme can be suitable for most plunger pumps with different water inlet calibers in the current market, and the application range is wider.
In the above-mentioned plunger pump, the casing is the platykurtic, the both sides of casing are the plane, the outer peripheral face of casing is the arc surface, the delivery port is located on the outer peripheral face of casing and along the outer peripheral face tangential direction of casing extends, turbine wheel is radial axial flow structure, total water inlet and return water mouth are located respectively the both sides of casing.
In the plunger pump, the blades on the turbine impeller are curved towards the rotation direction of the turbine impeller, the rotating shaft of the turbine impeller is connected to the inner wall of the shell, which is provided with the water return port, through the bearing, a guide device is arranged between the water return port and the turbine impeller and is internally provided with a diversion channel, the diversion channel is communicated with the water return port, and a plurality of diversion spray holes facing the blades are formed in the side wall of the diversion channel. When the novel high-speed self-rotation blade is used, the total water inlet is downward and is contacted with the water surface or the liquid level, the guide device is changed to be full and smooth on the water suction surface, and the blade can adapt to the high-speed self-rotation requirement and reduce the cavitation risk. The high-pressure backwater is injected from the axial direction through the plurality of diversion jet holes, and is sprayed out along the tangential line in the radial direction to drive the turbine impeller to rotate at a high speed, so that updraught vacuum is formed in the volute chamber, and the self-priming capacity of the pump is improved.
In the above plunger pump, the inner walls of the diversion channel and the diversion nozzle are spiral and linear. Therefore, the maximum rotation speed can be obtained under the drive of backwater pressure, and the impact force on the blades is increased, so that the speed of the turbine impeller is increased, and the self-priming capacity of the pump is improved.
Further, in the plunger pump, a water inlet impeller is arranged in the pump water inlet chamber of the pump body, a rotating shaft of the turbine impeller is connected with a rotating shaft of the water inlet impeller through a flexible shaft, the turbine impeller can drive the water inlet impeller, and the flexible shaft penetrates through a water outlet on the volute chamber and a pump water inlet of the pump water inlet chamber. The water inlet impeller is arranged in the water absorption head of the pump body, and the sealed flexible shaft is arranged in the water inlet pipe, so that the water inlet (water feeding) process can be accelerated, and the efficiency of the whole unit can be improved.
The turbine impeller drives the water inlet impeller through a flexible shaft, the flexible shaft can be connected with the vortex chamber through a mechanical seal, and the flexible shaft is connected into a pre-prepared liquid medicine box to form a dynamic liquid medicine suction assembly, so that a proportional medicine mixer related to water yield is formed.
Furthermore, in the plunger pump, the return water pipe connected with the return water outlet on the pump body is tapped into two return water pipes through a return water three-way joint, two return water ports are formed in the volute chamber corresponding to the two return water pipes, one return water port is correspondingly provided with the liquid suction turbine, the other return water port is correspondingly provided with the medicine suction turbine, and the shell is correspondingly provided with the medicine suction port. The liquid absorption and absorption turbine are respectively used for auxiliary power water absorption and auxiliary power medicine absorption.
As an alternative scheme, the rotating shaft of the turbine impeller drives two impellers with different diameters through a flexible shaft and a gear, and the impellers are respectively used for auxiliary power water absorption and auxiliary power medicine absorption, and can also form a dynamic proportion medicine mixing system related to water yield.
In the above plunger pump, electromagnetic valves or delay control switches are further arranged on the two tapped return pipes. The electromagnetic valve or the delay control switch is used for controlling the time difference between the water absorption and the liquid medicine suction, so that the liquid medicine is uniformly mixed.
Compared with the prior art, the plunger pump has the following advantages:
1. According to the technical scheme, the liquid suction turbine is arranged, so that the turbine impeller rotates at a high speed in the radial direction under the action of backwater, vacuum suction force is generated at the pump water inlet of the volute pump water inlet chamber, natural water suction is changed into power water suction, and the pump volumetric efficiency and the total efficiency of the plunger pump are improved.
2. According to the technical scheme, the structure of the liquid suction turbine is reasonably improved, the flow guide channel and the flow guide spray hole are arranged, the shape of the blade is optimized, the rotating speed of the backwater driving turbine impeller is increased, the water suction pressure is increased, the total efficiency of the pump/the overall efficiency of the pump are improved, and the aim of saving energy is achieved.
3. The technical scheme is also provided with the medicine sucking turbine, and the liquid sucking turbine and the medicine sucking turbine are respectively used for auxiliary power water sucking and auxiliary power medicine sucking, so that the efficiency is improved, and the use is convenient.
Drawings
Fig. 1 is a schematic front view of the plunger pump according to the first embodiment.
Fig. 2 is a schematic top view of the plunger pump according to the first embodiment.
Fig. 3 is a schematic cross-sectional view of the present plunger pump in the first embodiment.
Fig. 4 is a schematic side view of the plunger pump according to the second embodiment.
Fig. 5 is a schematic top view of the present plunger pump in the second embodiment.
Fig. 6 is a schematic cross-sectional structure of the present plunger pump in the second embodiment.
Fig. 7 is a schematic view of a partial sectional structure of the present plunger pump in the second embodiment.
In the figure, 1 part of the pump body, 1a part of the pump inlet chamber, 1b part of the pump inlet chamber, 2 parts of the liquid suction turbine, 21 parts of the shell, 21a parts of the vortex chamber, 22 parts of the turbine impeller, 23 parts of the total water inlet, 24 parts of the water return port, 25 parts of the water outlet, 3 parts of the water return pipe, 4 parts of the guide, 41 parts of the guide channel, 42 parts of the guide spray hole, 5 parts of the liquid suction turbine, 51 parts of the liquid suction port, 6 parts of the electromagnetic valve, 7 parts of the water return three-way joint.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
The plunger pump in the embodiment can be applied to a large-flow industrial water injection plunger pump, a seawater desalination plunger pump and other large-flow industrial displacement pumps, and also can be applied to the field of plant protection machinery in the agricultural machinery industry, such as a sprayer. As shown in fig. 1,2 and 3, the plunger pump in this embodiment includes a pump body 1, a pump intake chamber 1a is provided on the pump body 1, one end of the pump body 1 is fixedly connected with a liquid suction turbine 2, the liquid suction turbine 2 is located at a pump intake inlet 1b of the pump intake chamber 1a, the liquid suction turbine 2 includes a housing 21, a volute 21a located in the housing 21 and a turbine wheel 22 located in the volute 21a, a total water inlet 23, a water return port 24 and a water outlet 25 communicated with the pump intake inlet 1b of the pump intake chamber 1a are respectively provided on the volute 21a, the water return port 24 is communicated with a water return outlet on the pump body 1 through a water return pipe 3, and the water return entering through the water return port 24 can drive the turbine wheel 22 to rotate. Specifically, the shell 21 is flat, two sides of the shell 21 are flat, the outer peripheral surface of the shell 21 is an arc surface, the water outlet 25 is positioned on the outer peripheral surface of the shell 21 and extends along the tangential direction of the outer peripheral surface of the shell 21, the turbine impeller 22 is of a radial axial flow structure, the total water inlet 23 and the water return port 24 are respectively positioned at two sides of the shell 21, blades on the turbine impeller 22 are curved towards the rotation direction of the turbine impeller 22, a rotating shaft of the turbine impeller 22 is connected to the inner wall of the shell 21 at one side with the water return port 24 through a bearing, a guide 4 is arranged between the water return port 24 and the turbine impeller 22 on the rotating shaft, a guide channel 41 is arranged in the guide 4, the guide channel 41 is communicated with the water return port 24, and a plurality of guide spray holes 42 facing the blades are formed on the side wall of the guide channel 41. When the guide vane is used, the total water inlet 23 is downward and is contacted with the water surface or the liquid level, the guide vane 4 is changed to be full and smooth on the water suction surface, the vane can adapt to the high-speed rotation requirement, the cavitation risk is reduced, and further, the inner walls of the guide channel 41 and the guide spray hole 42 are spiral and linear. Thus, the maximum rotation speed can be obtained under the drive of backwater pressure, and the impact force on the blades is increased, so that the speed of the turbine impeller 22 is increased, and the self-priming capability of the pump is improved. When in use, the main water inlet 23, the water return port 24 and the water outlet 25 are respectively used for connecting the main water inlet, the pump water return and the pump water inlet chamber 1a. The turbine impeller 22 rotates radially at a high speed under the action of backwater, so that vacuum suction force is generated and increased at the pump water inlet 1b of the volute pump water inlet chamber 1a, natural water absorption is changed into power water absorption, and the pump volumetric efficiency and the total efficiency of the plunger pump are improved.
In the embodiment, the liquid suction turbine 2 is a radial axial flow type micro turbine, the radial dimension of the turbine impeller 22 is 10-40 mm, the liquid suction turbine can adapt to most plunger pumps with different water inlet calibers in the current market, and the application range is wider.
Further, in this embodiment, a water inlet impeller is disposed in the pump inlet chamber 1a of the pump body 1, a rotating shaft of the turbine impeller 22 is connected with a rotating shaft of the water inlet impeller through a flexible shaft, the turbine impeller 22 can drive the water inlet impeller, the flexible shaft passes through a water outlet 25 on the volute chamber 21a and a pump water inlet 1b of the pump inlet chamber 1a, the water inlet impeller is mounted in a water suction head of the pump body 1, and a sealed flexible shaft is built in the water inlet pipe, so that the water inlet process can be accelerated, and the efficiency of the whole unit can be improved.
The turbine impeller 22 drives the water inlet impeller through a flexible shaft, the flexible shaft can be connected with the vortex chamber 21a through a mechanical seal, and the flexible shaft is connected into a pre-prepared liquid medicine box to form a power liquid medicine sucking assembly, so that a proportional medicine mixer related to water yield is formed.
Example two
As shown in figures 3 to 7, a double-turbine impeller 22 is designed in the embodiment, the size and dimension of the double-turbine impeller can be selected from 10mm to 40mm according to actual needs, a return water pipe 3 connected with a return water outlet on a pump body 1 is branched into two return water pipes 3 through a return water three-way joint 7, two return water ports 24 are formed in a volute 21a corresponding to the two return water pipes 3, a liquid suction turbine 2 is correspondingly arranged at one return water port 24, a medicine suction turbine 5 is correspondingly arranged at the other return water port 24, the liquid suction turbine 2 and the medicine suction turbine 5 share a shell 21, a medicine suction port 51 is correspondingly arranged at the shell 21 and the medicine suction turbine 5, and the liquid suction turbine 2 and the medicine suction turbine 5 are respectively used for auxiliary power water absorption and auxiliary power medicine absorption. The principle is the same as that of the first embodiment, different suction forces can be generated according to different rotating speeds, and a dynamic and stable-proportion medicine mixing assembly is formed after debugging, and of course, the opening degree of the medicine mixing assembly and the opening degree of backwater are related. Furthermore, the two tapped water return pipes 3 are also provided with electromagnetic valves 6 or delay control switches, and the time difference between the two water suction and the liquid medicine suction is controlled by the electromagnetic valves 6 or the delay control switches, so that the liquid medicine is uniformly mixed.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms such as 1, pump body, 1a, pump intake chamber, 1b, pump intake port, 2, suction turbine, 21, housing, 21a, volute chamber, 22, turbine wheel, 23, total intake port, 24, return port, 25, outlet port, 3, return pipe, 4, deflector, 41, diversion channel, 42, diversion jet orifice, 5, suction turbine, 51, suction port, 6, solenoid valve, 7, return three-way joint are used more herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the invention and should be construed in a manner consistent with their spirit and scope.
Claims (6)
1. A plunger pump comprises a pump body (1), wherein a pump water inlet chamber (1 a) is formed in the pump body (1), and is characterized in that one end of the pump body (1) is fixedly connected with a liquid suction turbine (2), the liquid suction turbine (2) is located at a pump water inlet (1 b) of the pump water inlet chamber (1 a), the liquid suction turbine (2) comprises a shell (21), a volute (21 a) and a turbine impeller (22), the volute is located in the volute (21 a), a total water inlet (23), a water return port (24) and a water outlet (25) are formed in the volute (21 a) and are communicated with a pump water inlet (1 b) of the pump water inlet chamber (1 a), the water return port (24) is communicated with a water return outlet on the pump body (1) through a water return pipe (3), and the water return port (24) can drive the turbine impeller (22) to rotate;
The turbine impeller (22) is of a radial axial flow structure, and the total water inlet (23) and the water return port (24) are respectively positioned at two sides of the shell (21);
Blades on the turbine impeller (22) are curved towards the rotation direction of the turbine impeller (22), a rotating shaft of the turbine impeller (22) is connected to the inner wall of one side of the shell (21) with a water return port (24) through a bearing, a guide (4) is arranged between the water return port (24) and the turbine impeller (22) on the rotating shaft, a diversion channel (41) is arranged in the guide (4), the diversion channel (41) is communicated with the water return port (24), and a plurality of diversion spray holes (42) which face the blades are formed in the side wall of the diversion channel (41);
The pump is characterized in that a water inlet impeller is arranged in a pump water inlet chamber (1 a) of the pump body (1), a rotating shaft of the turbine impeller (22) is connected with the rotating shaft of the water inlet impeller through a flexible shaft, the turbine impeller (22) can drive the water inlet impeller, and the flexible shaft penetrates through a water outlet (25) on the volute chamber (21 a) and a pump water inlet (1 b) of the pump water inlet chamber (1 a).
2. Plunger pump according to claim 1, characterized in that the suction turbine (2) is a radial axial flow microturbine, the radial dimension of the turbine wheel (22) being 10-40 mm.
3. The plunger pump according to claim 1 or 2, wherein the housing (21) is flat, both sides of the housing (21) are flat, the outer circumferential surface of the housing (21) is an arc surface, and the water outlet (25) is located on the outer circumferential surface of the housing (21) and extends in a tangential direction of the outer circumferential surface of the housing (21).
4. A plunger pump according to claim 3, characterized in that the inner walls of the pilot channel (41) and pilot nozzle hole (42) are spiral linear.
5. Plunger pump according to claim 1 or 2, characterized in that the return water pipe (3) connected with the return water outlet on the pump body (1) is tapped into two return water pipes (3) through a return water three-way joint (7), two return water ports (24) are formed in the volute chamber (21 a) corresponding to the two return water pipes (3), one return water port (24) is correspondingly provided with the liquid suction turbine (2), the other return water port (24) is correspondingly provided with the medicine suction turbine (5), and the shell (21) and the medicine suction turbine (5) are correspondingly provided with the medicine suction port (51).
6. Plunger pump according to claim 5, characterized in that the two tapped return pipes (3) are further provided with solenoid valves (6) or delay control switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037222.XA CN110594146B (en) | 2019-10-29 | 2019-10-29 | A plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037222.XA CN110594146B (en) | 2019-10-29 | 2019-10-29 | A plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110594146A CN110594146A (en) | 2019-12-20 |
| CN110594146B true CN110594146B (en) | 2025-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911037222.XA Active CN110594146B (en) | 2019-10-29 | 2019-10-29 | A plunger pump |
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| CN (1) | CN110594146B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119333357A (en) * | 2024-12-18 | 2025-01-21 | 富士特有限公司 | A high-efficiency water return booster single plunger reciprocating pump for backpack sprayers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4281971A (en) * | 1979-07-31 | 1981-08-04 | Abex Corporation | Inlet inducer-impeller for piston pump |
| CN209539536U (en) * | 2019-01-26 | 2019-10-25 | 浙江太阳神机电科技有限公司 | Plunger pump with novel backwater structure |
| CN210660548U (en) * | 2019-10-29 | 2020-06-02 | 富士特有限公司 | Plunger pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0089296A1 (en) * | 1982-03-17 | 1983-09-21 | HYDRO RENE LEDUC (Société Anonyme) | Hydraulic axial piston pump with a swash plate and means for self-priming |
| CN103939356B (en) * | 2014-05-12 | 2016-06-15 | 上海成峰流体设备有限公司 | A kind of heating system |
| CN207212649U (en) * | 2017-09-15 | 2018-04-10 | 浙江太阳神机电科技有限公司 | Backwater plunger pump |
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2019
- 2019-10-29 CN CN201911037222.XA patent/CN110594146B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4281971A (en) * | 1979-07-31 | 1981-08-04 | Abex Corporation | Inlet inducer-impeller for piston pump |
| CN209539536U (en) * | 2019-01-26 | 2019-10-25 | 浙江太阳神机电科技有限公司 | Plunger pump with novel backwater structure |
| CN210660548U (en) * | 2019-10-29 | 2020-06-02 | 富士特有限公司 | Plunger pump |
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| CN110594146A (en) | 2019-12-20 |
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