CN216812133U

CN216812133U - Internal gear pump with overflow function

Info

Publication number: CN216812133U
Application number: CN202220234000.8U
Authority: CN
Inventors: 汪勇; 葛少华
Original assignee: Nantong Youshun Hydraulic Machinery Co ltd
Current assignee: Nantong Youshun Hydraulic Machinery Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-06-24
Anticipated expiration: 2032-01-28

Abstract

The utility model belongs to the technical field of gear pumps, and particularly relates to an internal gear pump with an overflow function, aiming at the problems that a conventional gear pump is single in function, does not have the overflow function, and the disassembly operation of an end cover is relatively complicated, so that the maintenance efficiency is influenced. According to the gear pump end cover, the overflow pipe can perform overflow work when the oil pressure is too high, and the gear pump end cover is fixed through the matching of the clamping plate and the clamping groove, so that the end cover can be conveniently detached, and the maintenance work is facilitated.

Description

Internal gear pump with overflow function

Technical Field

The utility model relates to the technical field of gear pumps, in particular to an internal gear pump with an overflow function.

Background

The internal gear pump adopts the principle of gear internal gearing, the pitch circle of an internal gear and an external gear is close to one side, and the other side is separated by a crescent moon plate on the pump cover. The driving inner gear on the main shaft drives the outer gears to rotate in the same direction, the gears are separated from each other at the inlet to form an oil suction cavity with negative pressure to suck liquid, and the gears are continuously embedded and meshed at the outlet to form an oil pressing cavity to extrude and output the liquid. The overflow valve is arranged in the gear pump, so that the pressure stabilizing effect is achieved, and the overload protection is achieved on the gear pump by preventing the overload of the actuating element.

Conventional gear pump function singleness does not have the overflow function, and is comparatively loaded down with trivial details to the dismantlement operation of end cover, influences the efficiency of maintaining, therefore we have proposed an crescent gear pump with overflow function and are used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects that the conventional gear pump has a single function, does not have an overflow function, has complicated disassembly operation of an end cover and influences the maintenance efficiency, and provides an internal gear pump with the overflow function.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an internal gear pump with an overflow function comprises a pump body and an end cover, wherein one side of the pump body is communicated with an overflow pipe, the bottom of the overflow pipe is communicated with a return pipe, the bottom end of the return pipe is communicated with the bottom of the outer side of the pump body, the end cover is movably sleeved on the outer side of the pump body, a sealing plate is fixedly installed on the inner wall of the bottom of the end cover, a sealing ring is fixedly sleeved on the outer side of the sealing plate and is in movable sealing butt joint with the inner wall of the pump body, vertical grooves are respectively formed in two sides of the bottom of the end cover, vertical plates are slidably installed in the vertical grooves, clamping plates and transverse plates are fixedly installed on the sides, close to each other, of the two vertical plates, clamping grooves are respectively formed in the bottoms of two sides of the pump body, a cylinder is respectively and movably clamped in corresponding clamping grooves, a cylinder is fixedly installed on the side, far away from each other of the two transverse plates, a connecting plate is rotatably sleeved on the outer side of the cylinder, grooves are formed in the bottom of the end cover and the inner wall of the bottom of the end cover, round hole and square groove have been seted up on the top inner wall of the recess of below, and the vertical axis is installed to the round hole internal rotation, and the equal fixed mounting in top and the bottom of vertical axis has the turning arm, and the equal fixed mounting in one side that two turning arms kept away from each other has the circle axle, and two connecting plates rotate respectively and cup joint in the outside of the circle axle that corresponds.

Preferably, slidable mounting has the square board in the square groove, and the bottom fixed mounting of square board has push pedal and locating lever, and the locating slot has been seted up on the top right side of the turning arm that is located the below in two turning arms, and the locating lever activity joint is in the locating slot.

Preferably, the top of square board is fixedly connected with two connecting springs, and the equal fixed connection in two connecting spring tops is on the top inner wall of square groove.

Preferably, fixed mounting has the retaining ring in the overflow pipe, and fixed mounting has the montant on the top inner wall of overflow pipe, and the bottom fixed mounting of montant has the fixed plate, and the baffle has been cup jointed in the outside slip of fixed plate, the right side swing seal butt of baffle and retaining ring, and the left side fixedly connected with overflow valve spring of fixed plate, the left end fixed connection of overflow valve spring is on the left side inner wall of baffle.

Preferably, the same guide rod is fixedly connected to the inner walls of the two sides of the vertical groove, and the two vertical plates are respectively sleeved on the outer sides of the corresponding guide rods in a sliding manner.

Preferably, two equal fixedly connected with reset springs in one side that two risers kept away from each other, the one end fixed connection that reset spring kept away from the riser is on the lateral wall of the vertical groove that corresponds.

Preferably, the inner wall of one side, close to each other, of each of the two vertical grooves is internally provided with a sliding hole, and the two transverse plates are respectively connected in the corresponding sliding holes in a sliding manner.

Preferably, the side walls of the grooves below the two grooves are fixedly provided with guide frames, and the guide frames are sleeved on the outer side of the push plate in a sliding manner.

According to the internal gear pump with the overflow function, the internal gear pump is sealed through the matching of the sealing plate and the sealing ring with the pump body, the push plate can be pushed to move upwards, so that the square plate and the positioning rod are driven to move upwards to be separated from the positioning groove, the fixing of the connecting lever is relieved, then the lower round shaft is controlled to drive the vertical shaft and the two connecting levers to rotate, the two round shafts are enabled to perform circular motion, the two round shafts respectively drive the two transverse plates to one side circle far away from each other through the matching of the connecting plates and the corresponding cylinders, the two transverse plates respectively drive the two clamping plates to move to one side far away from each other through the corresponding vertical plates, so that the two clamping plates are separated from the clamping grooves, the fixing of the end cover is relieved, and the end cover is convenient to move downwards to detach the end cover;

according to the internal gear pump with the overflow function, the overflow effect is achieved through the arranged overflow pipe, backflow is achieved through the return pipe, non-return can be achieved through the matching of the baffle and the retainer ring, and when the oil pressure in the pump body is too high, the baffle is triggered to move by the too high pressure to perform overflow work;

the gear pump end cover is reasonable in structural design, overflow work can be performed when the oil pressure is too high through the arranged overflow pipe, the gear pump end cover is fixed through the matching of the clamping plate and the clamping groove, the end cover is convenient to detach, maintenance work is facilitated, and reliability is high.

Drawings

Fig. 1 is a schematic perspective view of an internal gear pump with an overflow function according to the present invention;

fig. 2 is a schematic cross-sectional structural view of an internal gear pump with an overflow function according to the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a partial enlarged view of portion B of FIG. 2;

fig. 5 is a partially enlarged view of a portion C in fig. 2.

In the figure: 1. a pump body; 2. an end cap; 3. an overflow pipe; 4. a return pipe; 5. a sealing plate; 6. a retainer ring; 7. a baffle plate; 8. a vertical groove; 9. a vertical plate; 10. a clamping and connecting plate; 11. a card slot; 12. a seal ring; 13. a transverse plate; 14. a return spring; 15. a connecting plate; 16. a cylinder; 17. a vertical axis; 18. a crank arm; 19. positioning a rod; 20. a square groove; 21. a square plate; 22. pushing the plate; 23. a circular shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1-5, an internal gear pump with overflow function comprises a pump body 1 and an end cover 2, one side of the pump body 1 is communicated with an overflow pipe 3, the bottom of the overflow pipe 3 is communicated with a return pipe 4, the bottom end of the return pipe 4 is communicated with the bottom of the outer side of the pump body 1, the end cover 2 is movably sleeved on the outer side of the pump body 1, a sealing plate 5 is fixedly installed on the inner wall of the bottom of the end cover 2, a sealing ring 12 is fixedly sleeved on the outer side of the sealing plate 5, the sealing ring 12 is movably and sealingly abutted against the inner wall of the pump body 1, vertical grooves 8 are respectively formed on two sides of the bottom of the end cover 2, vertical plates 9 are slidably installed in the vertical grooves 8, clamping plates 10 and transverse plates 13 are respectively and fixedly installed on the sides, which are close to each other, clamping grooves 11 are respectively formed on the bottoms of two sides of the pump body 1, cylinders 16 are respectively and fixedly installed on the sides, which are far away from each other two transverse plates 13, connecting plate 15 has been cup jointed in the outside rotation of cylinder 16, all sets up flutedly on the bottom of end cover 2 and the bottom inner wall, has seted up round hole and square groove 20 on the top inner wall of the recess of below, and vertical axis 17 is installed to the round hole internal rotation, and the equal fixed mounting in top and the bottom of vertical axis 17 has turning arm 18, and the equal fixed mounting in one side that two turning arms 18 kept away from each other has round axle 23, and two connecting plates 15 rotate respectively and cup joint in the outside of the round axle 23 that corresponds.

In this embodiment, slidable mounting has square board 21 in the square groove 20, and the bottom fixed mounting of square board 21 has push pedal 22 and locating lever 19, and the constant head tank has been seted up on the top right side of the turning arm 18 that lies in the below in two turning arms 18, and locating lever 19 activity joint is fixed a position turning arm 18 in the constant head tank.

In this embodiment, two connecting spring of top fixedly connected with of square plate 21, the equal fixed connection in two connecting spring tops is on the top inner wall of square groove 20, resets square plate 21.

In this embodiment, the same guide bar of fixedly connected with on the both sides inner wall of vertical groove 8, two risers 9 slide respectively to cup joint in the outside of the guide bar that corresponds, lead riser 9.

In this embodiment, two equal fixedly connected with in one side that two risers 9 kept away from each other reset spring 14, and the one end fixed connection that riser 9 was kept away from to reset spring 14 resets riser 9 on the lateral wall of the vertical groove 8 that corresponds.

In this embodiment, the slide holes have all been seted up in two vertical grooves 8 one side inner wall that is close to each other, and two diaphragm 13 are sliding connection respectively in the slide hole that corresponds, lead diaphragm 13.

In this embodiment, the side walls of the grooves below the two grooves are fixedly provided with the guide frames, and the guide frames are slidably sleeved on the outer side of the push plate 22 to guide the push plate 22.

In this embodiment, when using, the cooperation through the sealing plate 5 and sealing washer 12 and the pump body 1 seals it, and can be through promoting push pedal 22 upward movement, thereby drive square plate 21 and locating lever 19 upward movement, make it break away from the constant head tank, remove the fixed to turning arm 18, then round axle 23 of control below drives vertical axis 17 and two turning arms 18 and rotates, and make two round axles 23 all carry out circular motion, two round axles 23 drive two diaphragms 13 to the one side circle of keeping away from each other through connecting plate 15 and the cooperation of the cylinder 16 that corresponds respectively, two diaphragms 13 drive two joint boards 10 through the riser 9 that corresponds respectively and move to the one side of keeping away from each other, make two joint boards 10 break away from with being connected of draw-in groove 11, thereby remove the fixed to end cover 2, so that it is dismantled to move end cover 2 downwards.

Example two

On the basis of embodiment one, fixed mounting has retaining ring 6 in the overflow pipe 3, and fixed mounting has the montant on the top inner wall of overflow pipe 3, and the bottom fixed mounting of montant has a fixed plate, and baffle 7 has been cup jointed in the outside slip of fixed plate, and baffle 7 and retaining ring 6's right side movable sealing butt, and the left side fixedly connected with overflow valve spring of fixed plate, the left end fixed connection of overflow valve spring is on the left side inner wall of baffle 7.

In this embodiment, when using, play the overflow effect through the overflow pipe 3 that sets up to flow back through back flow 4, and can carry out the non return through the cooperation of baffle 7 with retaining ring 6, when the oil pressure was too high in the pump body 1, too high pressure will trigger baffle 7 and remove and carry out overflow work.

Claims

1. An internal gear pump with an overflow function comprises a pump body (1) and an end cover (2), and is characterized in that one side of the pump body (1) is communicated with an overflow pipe (3), the bottom of the overflow pipe (3) is communicated with a return pipe (4), the bottom of the return pipe (4) is communicated with the bottom of the outer side of the pump body (1), the end cover (2) is movably sleeved on the outer side of the pump body (1), a sealing plate (5) is fixedly arranged on the inner wall of the bottom of the end cover (2), a sealing ring (12) is fixedly sleeved on the outer side of the sealing plate (5), the sealing ring (12) is movably abutted with the inner wall of the pump body (1) in a sealing manner, vertical grooves (8) are respectively formed in two sides of the bottom of the end cover (2), vertical plates (9) are slidably arranged in the vertical grooves (8), and a clamping plate (10) and a transverse plate (13) are respectively fixedly arranged on one side, which is close to the two vertical plates (9), draw-in groove (11) have all been seted up to the both sides bottom of the pump body (1), and two joint board (10) activity joint respectively are in draw-in groove (11) that correspond, and the equal fixed mounting in one side of keeping away from each other of two diaphragm (13) has cylinder (16), and connecting plate (15) have been cup jointed in the outside rotation of cylinder (16), all set up flutedly on the bottom of end cover (2) and the bottom inner wall, set up round hole and square groove (20) on the top inner wall of the recess of below, vertical axis (17) are installed to the round hole internal rotation, and the top of vertical axis (17) and the equal fixed mounting in bottom have turning arm (18), and the equal fixed mounting in one side of keeping away from each other of two turning arms (18) has round axle (23), and two connecting plates (15) rotate respectively and cup joint in the outside of the round axle (23) that correspond.

2. An internal gear pump with an overflow function as claimed in claim 1, wherein a square plate (21) is slidably mounted in the square groove (20), a push plate (22) and a positioning rod (19) are fixedly mounted at the bottom of the square plate (21), a positioning groove is formed in the right side of the top of the lower crank arm (18) in the two crank arms (18), and the positioning rod (19) is movably clamped in the positioning groove.

3. A crescent gear pump with overflow function, as claimed in claim 2, characterized in that two connecting springs are fixedly connected to the top of the square plate (21), and the top ends of the two connecting springs are fixedly connected to the inner wall of the top of the square groove (20).

4. An internal gear pump with overflow function according to claim 1, characterized in that, there is retaining ring (6) fixedly installed in overflow pipe (3), and fixedly installed on the top inner wall of overflow pipe (3) is the montant, and the bottom fixed mounting of montant has the fixed plate, and baffle (7) has been cup jointed in the outside slip of fixed plate, and baffle (7) and the right side movable sealing butt of retaining ring (6), and the left side fixedly connected with overflow valve spring of fixed plate, the left end fixed connection of overflow valve spring is on the left side inner wall of baffle (7).

5. An internal gear pump with overflow function according to claim 1, characterized in that the same guide bar is fixedly connected to the inner walls of the two sides of the vertical groove (8), and the two risers (9) are respectively sleeved outside the corresponding guide bars in a sliding manner.

6. An internal gear pump with overflow function according to claim 1, characterized in that two return springs (14) are fixedly connected to the sides of the two risers (9) far away from each other, and the ends of the return springs (14) far away from the risers (9) are fixedly connected to the side walls of the corresponding vertical grooves (8).

7. An internal gear pump with overflow function as claimed in claim 1, wherein the inner wall of one side of each of the two vertical grooves (8) close to each other is provided with a slide hole therein, and the two transverse plates (13) are slidably connected in the corresponding slide holes respectively.

8. An internal gear pump with overflow function as claimed in claim 1, wherein the side walls of the two grooves at the lower part are fixedly provided with a guide frame, and the guide frame is slidably sleeved on the outer side of the push plate (22).