A gear plunger pump

Abstract

The application discloses a gear plunger pump which is provided with a planetary gear outer shell facilitating positioning assembly, the inner surface of the planetary gear outer shell is equidistantly assembled with planetary supports, and the inner surface of the planetary supports is assembled with straight-toothed gears, so that the lower surface of the planetary supports is connected with a base, and the lower surface of the base is assembled with a motor. The gear plunger pump is provided with the planetary supports facilitating positioning support, cooperates with the base assembled uniformly and equidistantly to control the rotation of the first bevel gear, links and adjusts the second bevel gear to control the synchronous rotation of the extruding piece and the main rocker arm coaxially installed on the shaft body, and alternately controls the two-way valve rocker arm and the main rocker arm to form telescopic adjustment, so that the stability of the device can be effectively improved, and the composite mechanism formed by the two can effectively improve the flow and pressure conveying stability of the gear plunger pump.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plunger pumps, in particular to a gear plunger pump. BACKGROUND

[0002] The plunger pump is a pump that relies on the linear reciprocating movement of the plunger in the pump body to change the volume of the sealed working pump body, thereby realizing oil suction and oil pressure and delivering oil to other pipelines, but the existing plunger pump still has some problems when in use.

[0003] In the prior art, the authorized publication (announcement) number: CN116398393A "A bevel gear transmission plunger pump" includes a pump body, and further includes a driving mechanism arranged on the side wall of the pump body, which compresses and expands the inner cavity of the first plunger cavity connected with the transmission bevel gear through the transmission of two groups of driving bevel gears and transmission bevel gears arranged in the driving mechanism and designed to be inclined and meshed with each other, and performs oil suction and oil discharge operation.

[0004] During the operation of the above device, the design of the double plunger and the bevel gear transmission can improve the pressure rating, the double plunger structure avoids the lateral force between the cylinder block and the plunger of the swash plate type axial plunger pump, and solves the mutual restriction between the connecting rod and the cylinder block of the bevel gear transmission type swash pump, thereby breaking through the force limitation of the widely used axial plunger pump structure, so that the pressure resistance of the device can be significantly improved, and the stability of the device in different working environments can be improved, but the current plunger pump has single function and can only control the flow rate, and cannot output the pressure, flow rate and outflow frequency at the same time.

[0005] In addition, in the prior art, the authorized publication (announcement) number: CN107882705A "A double-path plunger pump" includes a pump body, a cavity is formed in the pump body, the pump body further has a left pump cavity and a right pump cavity, a left driven gear is arranged at the left part of the cavity, a left piston rod is connected to the left driven gear, the left piston rod cooperates with the left pump cavity and can move in the left pump cavity, a right driven gear is arranged at the right part of the cavity, a right piston rod is connected to the right driven gear, the right piston rod cooperates with the right pump cavity and can move in the right pump cavity, a driving gear is arranged at the middle part of the cavity, a transmission gear is arranged in the cavity, when the driving gear rotates forward, the transmission gear is located on the left side and meshes with the left driven gear, when the driving gear reverses, the transmission gear is located on the right side and meshes with the right driven gear, an external motor is arranged on the shell to drive the driving gear. The present application has the advantages of wear resistance and simple structure, but when in use, the pressure, flow rate and outflow frequency need to be output at the same time, which can only be controlled by an external pressure controller, a valve body and a circuit software logic program, which has high cost and large power loss. SUMMARY

[0006] The purpose of this invention is to provide a gear piston pump to solve the problems mentioned in the background art, such as the current piston pump having a single function, only able to control flow rate, and not able to output pressure, flow rate, and outflow frequency at the same time. To output pressure, flow rate, and outflow frequency at the same time, it is necessary to control them through an external pressure controller, valve body, and circuit software logic program, which results in high cost and large power loss.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a gear piston pump, which is provided with a planetary gear ring housing for easy positioning and assembly, and planetary supports are assembled at equal intervals on the inner surface of the planetary gear ring housing, and spur gears are assembled on the inner surface of the planetary supports, so that a base is connected to the lower surface of the planetary supports, and a motor is assembled on the lower surface of the base.

[0008] It includes: a first bevel gear, which is rotatably connected to the upper surface end of the planetary support, and a first outer shell is nested on the outer surface of the first bevel gear. A clamp is engaged on the outer surface of the first outer shell, and a second outer shell is mounted on the outer surface of the clamp. A gearbox support is installed between the inner surface of the second outer shell and the inner surface of the first outer shell.

[0009] Preferably, the first bevel gear and the first housing form a shaft rotation structure, and the first housing and the second housing form a limiting engagement structure through a clamp, and the second housing and the gearbox bracket form a threaded structure.

[0010] The above structure facilitates stable positioning and rotation during use, and allows for stable nesting on the inner surfaces of the first and second outer shells, as well as the engagement of the two components.

[0011] Preferably, the inner surface of the first housing is axially connected to a second bevel gear, and the lower side of the outer surface of the second bevel gear is meshed with a first bevel gear. An extrusion member is installed on the front side of the outer surface of the second bevel gear, and a shaft is nested on the inner surface of the extrusion member. At the same time, a two-way valve connecting rod is connected to the right side of the outer surface of the extrusion member.

[0012] An eccentric wheel is nested on the rear side of the outer surface of the shaft, and a main rocker arm is connected to the upper side of the outer surface of the eccentric wheel. A pump piston is nested on the upper surface of the main rocker arm. Meanwhile, a pump cylinder is telescopically connected to the outer surface of the pump piston, and a sealing ring is nested on the outer surface of the pump piston.

[0013] A compression spring is nested on the upper side of the outer surface of the two-way valve connecting rod, and the other end of the compression spring is nested on the positioning rod installed on the inner surface of the first housing. A two-way valve rocker is rotatably connected to the upper side of the outer surface of the two-way valve connecting rod.

[0014] With the above structure, stable assembly can be performed during use, forming a coaxial rotating device that controls the positions of the two-way valve remote lever and the main remote lever respectively, effectively improving the stability of the device.

[0015] Preferably, the second bevel gear and the first bevel gear form a meshing structure, and the second bevel gear and the extruder form an integral structure. The extruder forms a rotating structure with the first housing through a shaft, and the extruder forms an extrusion structure with the two-way valve connecting rod.

[0016] The above structure improves the stability of the device connection during use and forms a linkage control, effectively improving the stability of the two-way valve linkage adjustment.

[0017] Preferably, the outer surface of the two-way valve connecting rod has a bent structure, and the two-way valve connecting rod is rotatably mounted on the lower side of the inner surface of the first housing. The two-way valve connecting rod forms an elastic tension rotation structure with the first housing through a compression spring, and the two-way valve connecting rod and the two-way valve rocker form a nested rotation structure.

[0018] The above structure facilitates the control of the position of the two-way valve rocker arm during use, and, in conjunction with the use of a pressure spring, controls the automatic reset of the two-way valve linkage.

[0019] Preferably, the eccentric wheel forms a coaxial rotating structure with the extruder via a shaft, and the eccentric wheel and the main rocker arm form a nested rotating structure. The outer surface of the main rocker arm has a bent shape, and the main rocker arm forms a nested telescopic structure with the pump piston and the pump cylinder via a sealing ring.

[0020] With the above structure, the eccentric wheel and the extruder can be effectively adjusted to rotate in a coaxial manner during use, and together they control the main remote control to move the pump piston in the pump cylinder.

[0021] Preferably, a pump connector is nested on the inner surface of the pump cylinder body, and a pump inlet nozzle is connected to the upper side of the inner surface of the pump connector. A pump inlet sealing spring is nested on the lower side of the outer surface of the pump inlet nozzle, and the lower surface of the pump inlet sealing spring is nested on the upper side of the inner surface of the pump cylinder body.

[0022] The front end of the inner surface of the pump cylinder is sealed with a water outlet valve sealing head, and the outer surface of the water outlet valve sealing head is nested with a water outlet valve sealing spring. The other end of the outer surface of the water outlet valve sealing spring is nested with a water storage tank. The rear side of the water storage tank is nested with the front side of the outer surface of the pump cylinder. At the same time, a sealing cover is installed on the right and lower sides of the inner surface of the water storage tank.

[0023] A two-way valve connector is nested on the left side of the inner surface of the water storage tank, and a control valve head is connected to the right side of the inner surface of the two-way valve connector. A control valve spring is nested on the left side of the outer surface of the control valve head. A two-way valve cylinder is installed on the rear side of the outer surface of the two-way valve connector, and a two-way valve piston is telescopically connected to the inner surface of the two-way valve cylinder. A two-way valve rocker arm is nested on the lower side of the inner surface of the two-way valve piston.

[0024] The above structure allows for the effective assembly of water flow interconnection devices during use, and the formation of one-way valves at different locations for control, effectively controlling the output of pressure, flow rate, and outflow frequency, thereby improving operational stability.

[0025] Preferably, the pump connector and the pump cylinder body form a built-in nested structure, and the pump connector forms an elastic sealing structure with the pump inlet sealing spring through the pump inlet rubber head, and the pump inlet sealing spring and the pump cylinder body form a limiting structure. At the same time, the outlet valve sealing rubber head and the water storage tank form an integrated structure.

[0026] With the above structure, the one-way valve can effectively draw water from the stream and transport it to the storage tank to form a stable pressure during use.

[0027] Preferably, the water storage tank forms an elastic one-way valve with the pump cylinder body through the water outlet valve sealing spring and the water outlet valve sealing rubber head, and the water storage tank and the two-way valve connector form a limiting nested structure. The two-way valve connector forms an elastic sealing structure with the control valve spring and the control valve rubber head. At the same time, the two-way valve connector is embedded in the inner surface of the two-way valve cylinder body, and the two-way valve cylinder body and the two-way valve piston form a telescopic structure. Meanwhile, the two-way valve piston and the two-way valve rocker arm form a built-in nested structure.

[0028] With the above structure, the liquid can be effectively output in terms of pressure, flow rate and outflow frequency, which improves the stability of the conveying process, prevents backflow, and facilitates stability control at multiple positions.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. This gear plunger pump is equipped with a planetary support for easy positioning and support, and a base assembled at uniform and equal intervals controls the rotation of the first bevel gear. The second bevel gear is linked to control the synchronous rotation of the extrusion component and the main rocker arm, which are coaxially mounted on the shaft. The two-way valve rocker arm and the main rocker arm are alternately controlled to form a telescopic adjustment, which can effectively improve the stability of the device. Thus, the composite mechanism formed by the two can effectively improve the flow rate and pressure delivery stability of the gear plunger pump.

[0031] 2. This gear plunger pump is equipped with a gearbox bracket for easy support, and is equipped with a coaxially adjustable extrusion component and a main rocker arm. The rotation of the two-way valve connecting rod and the eccentric wheel are adjusted respectively to control the liquid entering the pump cylinder and to alternately control the liquid discharge from the two-way valve cylinder. It can be used in conjunction with the use of a water tank to output pressure, flow rate and discharge frequency of the liquid, thereby improving the stability and efficiency of use.

[0032] 3. This gear plunger pump is equipped with a pump body inlet rubber head assembled with a pump cylinder body. By using the pump inlet sealing spring, the flow of water into the pump cylinder body can be controlled. In conjunction with the squeezing of the pump piston, the water is delivered to the water storage tank, which is equipped with an outlet valve sealing rubber head and an outlet valve sealing spring. Thus, under the movement of the two-way valve piston, the water in the water storage tank is controlled to flow into the two-way valve connector, and then discharged through the two-way valve cylinder body assembled with the two-way valve connector. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of the planetary gear ring shell of the present invention;

[0034] Figure 2 This is a schematic diagram of the three-dimensional structure of a half-section of the planetary gear ring housing of the present invention;

[0035] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the planetary gear ring housing of the present invention;

[0036] Figure 4 This is a partial cross-sectional perspective view of the three-dimensional structure of the first outer shell of the present invention;

[0037] Figure 5 This is a schematic diagram of the three-dimensional structure of the two-way valve of the present invention;

[0038] Figure 6 This is a three-dimensional half-section view of the pump cylinder body of the present invention;

[0039] Figure 7 This is a three-dimensional half-section view of the cylinder body of the two-way valve of the present invention.

[0040] In the diagram: 1. Planetary gear ring housing; 2. Planetary support; 3. Spur gear; 4. Base; 5. Motor; 6. First bevel gear; 7. First housing; 8. Clamping element; 9. Second housing; 10. Gearbox support; 11. Second bevel gear; 12. Extrusion piece; 13. Shaft; 14. Two-way valve connecting rod; 15. Compression spring; 16. Two-way valve rocker arm; 17. Eccentric wheel; 18. Main rocker arm; 19. Pump piston; 20. Pump cylinder body; 21. Sealing ring; 22. Pump connector; 23. Pump body inlet nozzle; 24. Pump inlet sealing spring; 25. Outlet valve sealing nozzle; 26. Outlet valve sealing spring; 27. Water tank; 28. Sealing cap; 29. ​​Two-way valve connector; 30. Control valve nozzle; 31. Control valve spring; 32. Two-way valve piston; 33. Two-way valve cylinder body. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-7 The present invention provides a technical solution: a gear plunger pump, which is provided with a planetary gear ring housing 1 for easy positioning and assembly, and planetary support 2 is assembled at equal intervals on the inner surface of the planetary gear ring housing 1, and spur gear 3 is assembled on the inner surface of the planetary support 2, so that the lower surface of the planetary support 2 is connected to the base 4, and the lower surface of the base 4 is assembled with a motor 5.

[0043] It includes: a first bevel gear 6, which is rotatably connected to the upper surface end of the planetary support 2, and a first housing 7 is nested on the outer surface of the first bevel gear 6. A locking member 8 is engaged on the outer surface of the first housing 7, and a second housing 9 is installed on the outer surface of the locking member 8. A gearbox support 10 is installed between the second housing 9 and the inner surface of the first housing 7.

[0044] The first bevel gear 6 and the first housing 7 form a shaft rotation structure, and the first housing 7 and the second housing 9 form a limiting engagement structure through the clamp 8, and the second housing 9 and the gearbox bracket 10 form a threaded structure.

[0045] The inner surface of the first housing 7 is axially connected to the second bevel gear 11, and the lower side of the outer surface of the second bevel gear 11 is meshed with the first bevel gear 6. The front side of the outer surface of the second bevel gear 11 is equipped with an extrusion member 12, and the inner surface of the extrusion member 12 is nested with a shaft 13. At the same time, the right side of the outer surface of the extrusion member 12 is connected to a two-way valve connecting rod 14.

[0046] An eccentric wheel 17 is nested on the rear side of the outer surface of the shaft 13, and a main rocker arm 18 is shaft-connected to the upper side of the outer surface of the eccentric wheel 17. A pump piston 19 is nested on the upper surface of the main rocker arm 18. Meanwhile, a pump cylinder 20 is telescopically connected to the outer surface of the pump piston 19, and a sealing ring 21 is nested on the outer surface of the pump piston 19.

[0047] A compression spring 15 is nested on the upper side of the outer surface of the two-way valve connecting rod 14, and the other end of the compression spring 15 is nested on the positioning rod installed on the inner surface of the first housing 7. A two-way valve rocker 16 is rotatably connected to the upper side of the outer surface of the two-way valve connecting rod 14.

[0048] The second bevel gear 11 and the first bevel gear 6 form a meshing structure, and the second bevel gear 11 and the extrusion member 12 form an integrated structure. The extrusion member 12 forms a rotating structure with the first outer shell 7 through the shaft 13. At the same time, the extrusion member 12 and the two-way valve connecting rod 14 form an extrusion structure.

[0049] The outer surface of the two-way valve connecting rod 14 is bent, and the two-way valve connecting rod 14 is rotatably mounted on the lower side of the inner surface of the first housing 7. The two-way valve connecting rod 14 forms an elastic tension rotation structure with the first housing 7 through the compression spring 15, and the two-way valve connecting rod 14 and the two-way valve rocker 16 form a nested rotation structure.

[0050] The eccentric wheel 17 forms a coaxial rotating structure with the extruder 12 via the shaft 13, and the eccentric wheel 17 and the main rocker arm 18 form a nested rotating structure. The outer surface of the main rocker arm 18 is bent. At the same time, the main rocker arm 18 forms a nested telescopic structure with the pump piston 19 and the pump cylinder 20, and the pump piston 19 forms a sealed telescopic structure with the pump cylinder 20 via the sealing ring 21.

[0051] In use, the motor 5 assembled on the lower side of the starting base 4 rotates, thereby controlling the planetary support 2 inside the planetary gear ring housing 1 installed on the upper side of the base 4 to rotate, and controlling the spur gear 3 to form a linkage adjustment, thereby controlling the first bevel gear 6 connected to the upper top cover shaft of the upper planetary support 2 to rotate, and forming a positioning rotation inside the first housing 7 assembled on the planetary gear ring housing 1. In use, the first housing 7 is assembled with a gearbox support 10 inside, and the second housing 9 is assembled on the opposite side of the first housing 7 with a locking piece 8, forming an effective locking and fixing. At the same time, with the use of the gearbox support 10, the second bevel gear 11 meshed with the first bevel gear 6 and its installed pressing piece 12 are located on one side of the first housing 7, and the pressing piece 12 is controlled to nest the assembly shaft 13 nested in the inner surface of the first housing 7 and the second housing 9 to prevent it from falling off. At the same time, the eccentric wheel 17 on the rear side of the gearbox support 10 and the inner side of the second housing 9 can be adjusted to rotate coaxially.

[0052] While the extrusion member 12 rotates, the protruding rod positions and rotates the two-way valve connecting rod 14 on the inner surface of the first housing 7. As the two-way valve connecting rod 14 rotates and moves, it disengages from the extrusion member 12. Under the elastic tension of the extrusion spring 15 nested at the upper end, the two-way valve connecting rod 14 is reset for use. The other end of the outer surface of the extrusion spring 15 is nested on the inner surface of the first housing 7, thereby improving the stability of the device. The rotation of the two-way valve connecting rod 14 will drive the two-way valve rocker arm 16 to control the two-way valve piston 32 to move telescopically, and form telescopic adjustment on the inner surface of the two-way valve cylinder 33, effectively improving the stability of the device and draining water.

[0053] While the extrusion piece 12 rotates, the eccentric wheel 17 will synchronously drive the main rocker arm 18 to rotate, and control the pump piston 19 assembled with the main rocker arm 18 to nest the sealing ring 21, so as to extend and retract on the inner surface of the pump cylinder 20 to effectively perform water suction.

[0054] A pump connector 22 is nested on the inner surface of the pump cylinder body 20, and a pump body inlet nozzle 23 is connected to the upper side of the inner surface of the pump connector 22. A pump inlet sealing spring 24 is nested on the lower side of the outer surface of the pump body inlet nozzle 23, and the lower surface of the pump inlet sealing spring 24 is nested on the upper side of the inner surface of the pump cylinder body 20.

[0055] The front end of the inner surface of the pump cylinder body 20 is sealed with a water outlet valve sealing head 25, and the outer surface of the water outlet valve sealing head 25 is nested with a water outlet valve sealing spring 26. The other end of the outer surface of the water outlet valve sealing spring 26 is nested with a water storage tank 27. The rear side of the water storage tank 27 is nested with the front side of the outer surface of the pump cylinder body 20. At the same time, a sealing cover 28 is installed on the right side and the lower side of the inner surface of the water storage tank 27.

[0056] A two-way valve connector 29 is nested on the left side of the inner surface of the water tank 27, and a control valve head 30 is connected to the right side of the inner surface of the two-way valve connector 29. A control valve spring 31 is nested on the left side of the outer surface of the control valve head 30. At the same time, a two-way valve cylinder 33 is installed on the rear side of the outer surface of the two-way valve connector 29, and a two-way valve piston 32 is telescopically connected to the inner surface of the two-way valve cylinder 33. At the same time, a two-way valve rocker arm 16 is nested on the lower side of the inner surface of the two-way valve piston 32.

[0057] The pump connector 22 and the pump cylinder body 20 form a built-in nested structure, and the pump connector 22 forms an elastic sealing structure with the pump inlet sealing spring 24 through the pump inlet rubber head 23. The pump inlet sealing spring 24 and the pump cylinder body 20 form a limiting structure. At the same time, the outlet valve sealing rubber head 25 and the water storage tank 27 form an integrated structure.

[0058] The water storage tank 27 forms an elastic one-way valve with the pump cylinder body 20 through the outlet valve sealing spring 26 and the outlet valve sealing rubber head 25. The water storage tank 27 and the two-way valve connector 29 form a limiting nested structure. The two-way valve connector 29 forms an elastic sealing structure with the control valve rubber head 30 through the control valve spring 31. At the same time, the two-way valve connector 29 is embedded in the inner surface of the two-way valve cylinder body 33. The two-way valve cylinder body 33 and the two-way valve piston 32 form a telescopic structure. At the same time, the two-way valve piston 32 and the two-way valve rocker arm 16 form a built-in nested structure.

[0059] When the pump piston 19 extends or retracts within the pump cylinder 20, water is introduced through the pump connector 22 assembled within the pump cylinder 20 via a connecting pipe. The pressure difference generated after the pump piston 19 is removed from the pump cylinder 20 causes the control pump inlet nozzle 23 to compress the pump inlet sealing spring 24, causing water to flow through the pump connector 22 and the pump inlet nozzle 23 into the cavity between the pump piston 19 and the pump cylinder 20. As the pump piston 19 moves further into the pump cylinder 20, the pump inlet nozzle 23 is reset by spring force, sealing the lower end of the pump connector 22. This forces the water drawn into the pump cylinder 20 into the water storage tank 27. Simultaneously, the water flow compresses the outlet valve sealing nozzle 25, controlling... The outlet valve sealing spring 26 retracts, discharging water into the water storage tank 27 with a sealing cover 28. When the water storage tank 27 is filled with water and reaches a certain supply volume, the two-way valve piston 32, which extends and retracts simultaneously with the pump piston 19, will synchronously extend and retract within the two-way valve cylinder 33. This causes the water in the water storage tank 27 to press against the control valve head 30 due to the pressure difference, and causes the control valve spring 31 connected to the control valve head 30 to retract. This allows the water to flow into the cavity between the two-way valve piston 32 and the two-way valve cylinder 33, and is discharged in conjunction with the reset of the two-way valve piston 32. During use, this effectively improves the stability of pressure, flow rate, and outflow frequency, reduces the operation of the electromagnetic control valve, and improves the synchronization effect of the device.

[0060] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gear plunger pump is provided with a planetary gear outer shell (1) facilitating positioning assembly, and the inner surface of the planetary gear outer shell (1) is equidistantly assembled with a planetary support (2), and the inner surface of the planetary support (2) is assembled with a straight tooth gear (3), so that the lower surface of the planetary support (2) is connected with a base (4), and the lower surface of the base (4) is assembled with a motor (5); characterized in that Including: The first bevel gear (6) is axially connected to the upper surface end of the planetary support (2), and the outer surface of the first bevel gear (6) is nested with a first outer shell (7), and the outer surface of the first outer shell (7) is fitted with a clamping piece (8), and the outer surface of the clamping piece (8) is fitted with a second outer shell (9), and the second outer shell (9) and the inner surface of the first outer shell (7) are fitted with a gear box support (10); The inner surface of the first outer shell (7) is axially connected with a second bevel gear (11), and the lower side of the outer surface of the second bevel gear (11) is engaged with the first bevel gear (6), the front side of the outer surface of the second bevel gear (11) is fitted with an extrusion piece (12), and the inner surface of the extrusion piece (12) is nested with a shaft body (13), and the right side of the outer surface of the extrusion piece (12) is connected with a two-way valve connecting rod (14); The outer surface of the shaft body (13) is nested with an eccentric wheel (17) at the rear side, and the outer surface of the eccentric wheel (17) is axially connected with a main rocker (18) at the upper side, and the upper surface of the main rocker (18) is nested with a pump piston (19), and the outer surface of the pump piston (19) is telescopically connected with a pump cylinder body (20), and a sealing ring (21) is nested on the outer surface of the pump piston (19); The outer surface of the two-way valve connecting rod (14) is nested with an extrusion spring (15) at the upper side, and the other end of the extrusion spring (15) is nested on the positioning rod fitted on the inner surface of the first outer shell (7), and the outer surface of the two-way valve connecting rod (14) is rotatably connected with a two-way valve rocker (16) at the upper end; The inner surface of the pump cylinder body (20) is nested with a pump connector (22), and the inner surface of the pump connector (22) is connected with a pump body water inlet rubber head (23) at the upper side, and the outer surface of the pump body water inlet rubber head (23) is nested with a pump water inlet sealing spring (24) at the lower side, and the lower surface of the pump water inlet sealing spring (24) is nested on the inner surface of the pump cylinder body (20) at the upper side; The inner surface of the pump cylinder body (20) is sealed at the front end with a water outlet valve sealing rubber head (25), and the outer surface of the water outlet valve sealing rubber head (25) is nested with a water outlet valve sealing spring (26), and the other end of the outer surface of the water outlet valve sealing spring (26) is nested with a water storage tank (27), and the rear side of the water storage tank (27) is nested with the front side of the outer surface of the pump cylinder body (20), and the inner surface of the water storage tank (27) is fitted with a sealing cover (28) at the right side and the lower side. The inner surface of the water storage tank (27) is nested with a two-way valve connector (29) on the left side, and the inner surface of the two-way valve connector (29) is connected with a control valve rubber head (30) on the right side, and the outer surface of the control valve rubber head (30) is nested with a control valve spring (31) on the left side, while the outer surface of the two-way valve connector (29) is installed with a two-way valve cylinder (33) on the back side, and the two-way valve cylinder (33) is connected with a two-way valve piston (32) on the inner surface, while the inner surface of the two-way valve piston (32) is nested with a two-way valve rocker (16) on the lower side.

2. A gear piston pump according to claim 1, characterized in that: The first bevel gear (6) and the first housing (7) constitute a shaft rotating structure, and the first housing (7) is connected with the second housing (9) through the clamping piece (8) to form a limiting clamping structure, and the second housing (9) and the gear box support (10) constitute a threaded structure.

3. A gear piston pump according to claim 1, characterized in that: The second bevel gear (11) and the first bevel gear (6) constitute a meshing structure, and the second bevel gear (11) and the extrusion piece (12) constitute an integrated structure, and the extrusion piece (12) is connected with the first housing (7) through the shaft body (13) to form a rotating structure, and the extrusion piece (12) and the two-way valve connecting rod (14) constitute an extrusion structure.

4. A gear piston pump according to claim 3, characterized in that: The outer surface of the two-way valve connecting rod (14) is in a bent structure, and the two-way valve connecting rod (14) is arranged on the inner surface of the first housing (7) on the middle and lower sides, and the two-way valve connecting rod (14) is connected with the first housing (7) through the extrusion spring (15) to form an elastic stretching rotating structure, and the two-way valve connecting rod (14) and the two-way valve rocker (16) constitute a nested rotating structure.

5. A gear piston pump according to claim 1, characterized in that: The eccentric wheel (17) is connected with the extrusion piece (12) through the shaft body (13) to form a coaxial rotating structure, and the eccentric wheel (17) and the main rocker (18) constitute a nested rotating structure, and the outer surface of the main rocker (18) is in a bent structure, and the main rocker (18) is connected with the pump cylinder (20) through the pump piston (19) to form a nested telescopic structure, and the pump piston (19) is connected with the pump cylinder (20) through the sealing ring (21) to form a sealed telescopic structure.

6. A gear piston pump according to claim 1, characterized in that: The pump connector (22) and the pump cylinder (20) constitute an embedded nested structure, and the pump connector (22) is connected with the pump body water inlet rubber head (23) and the pump water inlet sealing spring (24) to form an elastic sealing structure, and the pump water inlet sealing spring (24) and the pump cylinder (20) constitute a limiting structure, and the water outlet valve sealing rubber head (25) and the water storage tank (27) constitute an integrated structure.

7. A gear piston pump according to claim 6, characterized in that: The water storage tank (27) is sealed by the water outlet valve sealing spring (26) and the water outlet valve sealing rubber head (25) to form a flexible one-way valve with the pump cylinder body (20), and the water storage tank (27) and the two-way valve connector (29) constitute a limited nested structure, and the two-way valve connector (29) forms a flexible sealing structure with the control valve spring (31) and the control valve rubber head (30), and the two-way valve connector (29) is installed in the inner surface of the two-way valve cylinder body (33) in an embedded manner, and the two-way valve cylinder body (33) and the two-way valve piston (32) constitute a telescopic structure, and the two-way valve piston (32) and the two-way valve rocker (16) constitute an embedded nested structure.

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