CN210013792U

CN210013792U - Quantitative plunger pump

Info

Publication number: CN210013792U
Application number: CN201920378633.4U
Authority: CN
Inventors: 蒋润
Original assignee: Wuhu Southwest Machinery Co Ltd
Current assignee: Wuhu Southwest Machinery Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-02-04
Anticipated expiration: 2029-03-25

Abstract

The utility model discloses a quantitative plunger pump, which comprises a base body and a main shaft, wherein the end part of the base body is rotatably provided with the main shaft, the base body is internally provided with a transmission groove, one side of the transmission groove, which is far away from the main shaft, is provided with an inlet groove and a discharge groove, a piston groove communicated with the transmission groove is arranged between the inlet groove and the discharge groove, the outer side of the base body, which is positioned at the corresponding position of the inlet groove and the discharge groove, is provided with an inlet and a discharge port, the inlet groove and the discharge groove are respectively provided with two through holes communicated with the piston groove, the middle part of each through hole is provided with a one-way valve, a piston rod is slidably arranged in the piston groove, the quantitative plunger pump is pushed by the piston rod to alternatively open and close through the four one-way valves arranged in the same direction, so that the reciprocating stroke of the piston rod can conduct flow, the working, the service performance of the device is improved.

Description

Quantitative plunger pump

Technical Field

The utility model relates to a plunger pump technical field specifically is a ration plunger pump.

Background

The plunger pump is an important device of the hydraulic system. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity so as to absorb and press oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like.

The quantitative plunger pump is a common plunger pump, but the piston driving of the existing quantitative plunger pump is unstable, and the transmission efficiency is low; moreover, the existing quantitative plunger pump adopts single-stroke flow guide and is low in efficiency, so that the quantitative plunger pump is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ration plunger pump to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a quantitative plunger pump, includes base member and main shaft, the base member tip rotates installs the main shaft, the inside transmission groove of having seted up of base member, and the transmission groove is kept away from main shaft one side and has been seted up the inlet channel and has been arranged the groove, set up the piston groove with the transmission groove intercommunication between inlet channel and the groove, the base member outside is located the inlet channel and has been seted up import and row's mouth with the groove corresponding position, the inlet channel all sets up two through-holes with the piston groove intercommunication with the groove, and the through-hole mid-mounting has a check valve, slidable mounting has the piston rod in the piston groove, the piston groove is close to transmission groove one end seal and is fixed with the sealing plug, and.

Preferably, two pairs of cams are installed to the symmetry rotation in the drive groove, piston rod end is fixed with the push pedal, and the push pedal passes between the cam, the inner fixed mounting of main shaft has the worm, the transmission shaft is installed to the drive inslot internal rotation, and the transmission shaft center installs the worm wheel of being connected with the worm meshing, the top coaxial arrangement of cam pivot has driven bevel gear, the drive bevel gear has been cup jointed in the transmission shaft outside, and the drive bevel gear is connected with driven bevel gear meshing, cam below coaxial arrangement has the band pulley, and the band pulley of homonymy passes through the drive belt transmission and connects in the drive groove.

Preferably, slide bars are symmetrically fixed on two sides of the transmission groove and slide through two ends of the push plate.

Preferably, the piston at the end of the piston rod is positioned between the two check valves, and the piston has two layers.

Preferably, the edge of the cam is arc-shaped, and the edge of the cam is subjected to smooth polishing treatment.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses promote right when the piston rod, the upper right check valve is opened, the check valve of lower right is closed, the check valve of upper left is closed, the check valve of lower left is opened, when the piston rod promotes left, the state conversion of check valve, the bipartition of piston rod promotes and can both form the passageway, the water conservancy diversion efficiency has been increased, this ration plunger pump is promoted to be pressed in turn and to be opened and close by the piston rod through the check valve of four syntropy installations, make the reciprocal stroke of piston rod all carry out water conservancy diversion work, very big improvement the work efficiency of device.

2. The utility model discloses the main shaft rotates, and the meshing transmission through worm and worm wheel makes the transmission shaft rotate, and the driven bevel gear of rethread and drive bevel gear's meshing connection makes the cam rotate, and the cam rotation is followed to the band pulley, makes both sides cam rotate through the transmission of drive belt, promotes by the cam cooperation of both sides and makes the push pedal drive the piston rod seat piston promote, and this ration plunger pump promotes the push pedal is reciprocal through the cam that push pedal bilateral symmetry set up, increases the activity stability of piston rod, improves the performance of device.

Drawings

FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the main shaft transmission structure of the present invention;

fig. 4 is a schematic view of the cam transmission structure of the present invention.

In the figure: 1. a substrate; 2. an inlet; 3. discharging; 4. entering a groove; 5. arranging grooves; 6. a one-way valve; 7. a piston groove; 8. a piston rod; 9. a transmission groove; 10. a cam; 11. pushing the plate; 12. a drive shaft; 13. a main shaft; 14. a sealing plug; 15. a slide bar; 16. a worm; 17. a worm gear; 18. a driven bevel gear; 19. a drive bevel gear; 20. a pulley; 21. a transmission belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a quantitative plunger pump comprises a base body 1 and a main shaft 13, wherein the end part of the base body 1 is rotatably provided with the main shaft 13, the inside of the base body 1 is provided with a transmission groove 9, the transmission groove 9 is far away from one side of the main shaft 13 and is provided with a feeding groove 4 and a discharging groove 5, a piston groove 7 communicated with the transmission groove 9 is arranged between the feeding groove 4 and the discharging groove 5, the outer side of the base body 1 is positioned at the corresponding position of the feeding groove 4 and the discharging groove 5 and is provided with an inlet 2 and a discharging port 3, the feeding groove 4 and the discharging groove 5 are both provided with two through holes communicated with the piston groove 7, the middle part of each through hole is provided with a check valve 6, a piston rod 8 is arranged in the piston groove 7 in a sliding manner, one end of the piston groove 7 close to the transmission groove 9 is hermetically fixed with a sealing plug 14, the piston rod 8 slides to pass through the 14, a liquid inlet device, the check valve 6 of lower right is closed, and the check valve 6 of upper left is closed, and the check valve 6 of lower left is opened, and when piston rod 8 promoted left, the state of check valve 6 changed, and piston rod 8 two to promote can both form the passageway, has increased water conservancy diversion efficiency.

Two pairs of cams 10 are symmetrically and rotatably installed in the transmission groove 9, the end part of the piston rod 8 is fixed with a push plate 11, the push plate 11 penetrates between the cams 10, the inner end of the main shaft 13 is fixedly provided with a worm 16, the transmission groove 9 is rotatably provided with a transmission shaft 12, the center of the transmission shaft 12 is provided with a worm wheel 17 engaged with the worm 16, a driven bevel gear 18 is coaxially installed above the rotating shaft of the cam 10, the outer side of the transmission shaft 12 is sleeved with a driving bevel gear 19, the driving bevel gear 19 is engaged with the driven bevel gear 18, the lower part of the cam 10 is coaxially provided with a belt wheel 20, the belt wheels 20 on the same side in the transmission groove 9 are in transmission connection through a transmission belt 21, the main shaft 13 is driven to rotate, the transmission shaft 12 is rotated through the engagement transmission of the worm 16 and the worm wheel 17, and then the cam, the belt wheel 20 rotates along with the cam 10, the cams 10 on the two sides rotate through the transmission of the transmission belt 21, and the push plate 11 drives the piston rod 8 to push the piston through the matching push of the cams 10 on the two sides.

Slide bars 15 are symmetrically fixed on two sides of the transmission groove 9, the slide bars 15 slide through two ends of the push plate 11, and the push plate 11 drives the piston rod 8 to move stably through the sliding limit of the slide bars 15.

The piston at the end of the piston rod 8 is positioned between the two one-way valves 6, the number of the pistons is two, and the sealing effect of pushing is increased by the two layers of pistons.

The edge of the cam 10 is arc-shaped, and the edge of the cam 10 is subjected to smooth polishing treatment, so that the friction force of the cam 10 in transmission is reduced, and the transmission efficiency is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. A dosing plunger pump comprising a base body (1) and a main shaft (13), characterized in that: a main shaft (13) is rotatably arranged at the end part of the base body (1), a transmission groove (9) is arranged in the base body (1), and one side of the transmission groove (9) far away from the main shaft (13) is provided with a feed groove (4) and a discharge groove (5), a piston groove (7) communicated with the transmission groove (9) is arranged between the inlet groove (4) and the discharge groove (5), the outer side of the base body (1) is provided with an inlet (2) and a discharge port (3) at the corresponding positions of the inlet groove (4) and the discharge groove (5), the inlet groove (4) and the discharge groove (5) are both provided with two through holes communicated with the piston groove (7), and the middle part of the through hole is provided with a one-way valve (6), the piston groove (7) is internally provided with a piston rod (8) in a sliding way, one end of the piston groove (7) close to the transmission groove (9) is hermetically fixed with a sealing plug (14), and the piston rod (8) slides through the sealing plug (14).

2. A dosing plunger pump according to claim 1, characterised in that: two pairs of cams (10) are installed to the symmetry rotation in drive groove (9), piston rod (8) end fixing has push pedal (11), and push pedal (11) pass between cam (10), main shaft (13) inner fixed mounting has worm (16), transmission shaft (12) are installed to drive groove (9) internal rotation, and transmission shaft (12) center install with worm (16) meshing connection's worm wheel (17), the top coaxial arrangement of cam (10) pivot has driven bevel gear (18), drive bevel gear (19) have been cup jointed in transmission shaft (12) outside, and drive bevel gear (19) and driven bevel gear (18) meshing connection, cam (10) below coaxial arrangement has band pulley (20), and band pulley (20) of homonymy pass through drive belt (21) transmission connection in drive groove (9).

3. A dosing plunger pump according to claim 1, characterised in that: slide bars (15) are symmetrically fixed on two sides of the transmission groove (9), and the slide bars (15) slide through two ends of the push plate (11).

4. A dosing plunger pump according to claim 1, characterised in that: the piston at the end of the piston rod (8) is positioned between the two one-way valves (6), and the piston has two layers.

5. A dosing plunger pump according to claim 2, characterised in that: the edge of the cam (10) is arc-shaped, and the edge of the cam (10) is subjected to smooth polishing treatment.