CN211692804U

CN211692804U - Gear pump

Info

Publication number: CN211692804U
Application number: CN202020035064.6U
Authority: CN
Inventors: 杨庆余; 官锡交; 王敏科
Original assignee: Shenzhen Huatian Shengshi Technology Co ltd
Current assignee: Shenzhen Huatian Shengshi Technology Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-10-16
Anticipated expiration: 2030-01-08

Abstract

The utility model discloses a gear pump, including pump protecgulum, the lower pump body, pump hou gai, go up the pump body, driving gear and driven gear, it has the pump protecgulum to go up pump body front side through fixing bolt fastening, and goes up pump body rear side and have the pump hou gai through fixing bolt fastening, and the lower pump body both sides that go up pump body below and set up are provided with the liquid outlet, go up the inside upper end of the pump body and install the driving gear, and the bearing frame is installed to the part that stretches out the pump protecgulum to the axis of rotation side, driving gear and the driven gear meshing of last pump. This gear pump, the driven gear and the driving gear meshing that the gear pump is inside to be set up, and the pressure tank that the cooperation side set up forms the extrusion to liquid, and external pressure groove and internal pressure inslot inner chamber variation in size for the inside liquid of pressure cavity forms the pressurization, and after pressure was too big, extrusion relief valve rearward movement makes the backward flow say unblocked, reduces outlet pressure, improves the life of gear pump.

Description

Gear pump

Technical Field

The utility model relates to a pump field specifically is a gear pump.

Background

At present, in the development of the mechanical production and manufacturing industry in China, more and more mechanical production equipment appears in a production workshop, gear oil pumps are various, but the gear oil pumps still face challenges in many aspects, and the conventional gear pumps are too high in liquid output pressure, easy to damage pump bodies, high in cost and not suitable for application and popularization.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear 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 gear pump, including the pump protecgulum, the lower pump body, the pump back lid, go up the pump body, driving gear and driven gear, it has the pump protecgulum to go up pump body front side through fixing bolt fastening, and go up pump body rear side and have the pump back lid through fixing bolt fastening, the lower pump body both sides that go up pump body below setting are provided with the liquid outlet, and go up pump body left side middle part and seted up the inlet, and go up pump body right side middle part and seted up the liquid outlet, go up the inside upper end of pump body and install the driving gear, and driving gear mid-mounting's axis of rotation rotates on the pump protecgulum, the part that the axis of rotation side stretches out the pump protecgulum installs the bearing frame, and bearing frame internally mounted's bearing inboard is fixed with sealed the pad, and the axis of rotation stretches.

Preferably, the pump front cover and the pump rear cover are made of stainless steel, the upper pump body and the lower pump body which are arranged inside the pump front cover and the pump rear cover are integrally formed by stamping the stainless steel, and a sealing gasket is arranged at the joint of the pump front cover and the pump rear cover and the upper pump body.

Preferably, the lower end of the interior of the pump rear cover is provided with a return channel, the two ends of the return channel are respectively connected with the liquid inlet and the liquid outlet, the pump rear cover on the side face of the liquid outlet is provided with a fine adjustment bolt, and the front end of the fine adjustment bolt is connected with the safety valve through a spring.

Preferably, the front end of a fine adjustment bolt arranged on the pump rear cover is slidably arranged inside an inlet pipeline of the return channel through a safety valve connected with a spring, the safety valve is arranged inside the inlet pipeline and blocked on the shunt pipeline, and the safety valve is made of circular rubber.

Preferably, an external pressure groove is formed between the left side of the driving gear and the driven gear which are arranged inside the upper pump body and the inner wall of the upper pump body, an internal pressure groove is formed between the right side of the driving gear and the driven gear and the inner wall of the upper pump body, the distance between the internal pressure grooves is smaller than that between the external pressure grooves, and the arc-shaped structure of the internal pressure groove occupies one third of the inside of the upper pump body.

Preferably, the driving gear and the rotating shaft are fixed together, the rotating shaft is installed inside the pump rear cover to be rotatable, the driven gear and the fixed shaft are rotatably connected, and two ends of the fixed shaft are fixed inside the pump front cover and the pump rear cover.

Compared with the prior art, the beneficial effects of the utility model are that: this gear pump, the driven gear and the driving gear meshing that the gear pump is inside to be set up, and the pressure tank that the cooperation side set up forms the extrusion to liquid, and external pressure groove and internal pressure inslot inner chamber variation in size for the inside liquid of pressure cavity forms the pressurization, and after pressure was too big, extrusion relief valve rearward movement makes the backward flow say unblocked, reduces outlet pressure, improves the life of gear pump.

Drawings

FIG. 1 is a schematic structural section view of the present invention;

fig. 2 is a schematic view showing the structure of the present invention.

In the figure: 1. a fixed shaft; 2. a pump front cover; 3. a lower pump body; 4. a return channel; 5. a safety valve; 6. a spring; 7. fine-tuning the bolt; 8. a pump rear cover; 9. an upper pump body; 10. a driving gear; 11. fixing the bolt; 12. a bearing seat; 13. a rotating shaft; 14. a drive tooth; 15. a gasket; 16. a driven gear; 17. a liquid inlet; 18. an external pressure tank; 19. an internal pressure tank; 20. and a liquid outlet.

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. 1-2, the present invention provides a technical solution: a gear pump comprises a pump front cover 2, a lower pump body 3, a pump rear cover 8, an upper pump body 9, a driving gear 10 and a driven gear 16, wherein the pump front cover 2 is fixed on the front side of the upper pump body 9 through a fixing bolt 11, the pump rear cover 8 is fixed on the rear side of the upper pump body 9 through a fixing bolt 11, liquid outlets 20 are arranged on two sides of the lower pump body 3 arranged below the upper pump body 9, a liquid inlet 17 is arranged in the middle of the left side of the upper pump body 9, a liquid outlet 20 is arranged in the middle of the right side of the upper pump body 9, the driving gear 10 is arranged at the upper end inside the upper pump body 9, a rotating shaft 13 arranged in the middle of the driving gear 10 rotates on the pump front cover 2, a bearing seat 12 is arranged on the side surface of the rotating shaft 13 extending out of the pump front cover 2, a sealing gasket 15 is fixed on the inner side of a bearing arranged inside the bearing seat 12, the fixed shaft 1 is arranged in the driven gear 16, the pump front cover 2 and the pump rear cover 8 are made of stainless steel, the upper pump body 9 and the lower pump body 3 which are arranged in the pump front cover 2 and the pump rear cover 8 are integrally formed by punching the stainless steel, sealing gaskets are arranged at the joints of the pump front cover 2 and the pump rear cover 8 and the upper pump body 9 to ensure the sealing performance of the whole structure of the gear pump, when the gear pump is used, a driving tooth 14 of equipment is connected with a driving device, a liquid inlet 17 is connected with an oil inlet pipeline, a liquid outlet 20 is connected with an oil outlet pipeline, a rotating shaft 13 drives the driving gear 10 to rotate so as to drive the driven gear 16 to rotate, liquid enters the external pressure groove 18, and in the rotating process, the liquid remained in a tooth groove arranged on the side surfaces of the driving gear 10 and the driven gear 16 enters the internal pressure groove 19 to form extrusion and then enters the, the hydraulic pressure in the liquid outlet 20 is too high, the safety valve 5 is extruded to move backwards, and then the return channel 4 and the inner cavity of the upper pump body 9 form a passage, so that the liquid outlet pressure of the liquid outlet 20 is reduced.

Back flow channel 4 has been seted up to the inside lower extreme of lid 8 behind the pump, and inlet 17 and liquid outlet 20 are connected respectively at 4 both ends of back flow channel, and install fine setting bolt 7 behind the pump of liquid outlet 20 side on lid 8, simultaneously fine setting bolt 7 front end passes through spring 6 and connects relief valve 5, the relief valve 5 that spring 6 is connected is passed through to the fine setting bolt 7 front end that sets up behind the pump on lid 8 installs in the inside slidable of the inlet pipe of back flow channel 4, and relief valve 5 installs on the inside jam of inlet pipe is on the reposition of redundant personnel pipeline, and relief valve 5 is the rubber material of circular form, when 20 liquid pressure is too big, relief valve 5 moves backward, make spring 6 compression, make smooth 4 of back flow channel, make inside liquid reflux of liquid outlet 20 inside flow back inside inlet 17, and the inside pressure of liquid outlet 20 reduces the back, spring 6 elastic action pushes relief valve 5 down.

Go up and form external pressure groove 18 between the left side of driving gear 10 and the driven gear 16 of pump body 9 internally mounted and the last pump body 9 inner wall, and form internal pressure groove 19 between driving gear 10 and the driven gear 16 right side and the last pump body 9 inner wall, simultaneously the interval of internal pressure groove 19 is less than the interval of

external pressure groove

18, and 19 arc-shaped structures in internal pressure groove occupy the inside third of the last pump body 9, make liquid go out at liquid outlet 20 and form pressure, driving gear 10 and axis of rotation 13 are fixed together, and axis of rotation 13 installs and covers 8 inside rotatable behind the pump, driven gear 16 rotates with fixed axle 1 simultaneously and is connected, and fixed axle 1 both ends are fixed inside pump protecgulum 2 and pump rear cover 8, guarantee that driving gear 10 drives driven gear 16 and rotates.

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. The utility model provides a gear pump, includes pump protecgulum (2), the lower pump body (3), pump back lid (8), goes up pump body (9), driving gear (10) and driven gear (16), its characterized in that: the pump front cover (2) is fixed on the front side of the upper pump body (9) through a fixing bolt (11), the pump rear cover (8) is fixed on the rear side of the upper pump body (9) through the fixing bolt (11), liquid outlets (20) are arranged on two sides of the lower pump body (3) arranged below the upper pump body (9), a liquid inlet (17) is formed in the middle of the left side of the upper pump body (9), the liquid outlet (20) is formed in the middle of the right side of the upper pump body (9), a driving gear (10) is installed at the upper end inside the upper pump body (9), a rotating shaft (13) installed in the middle of the driving gear (10) rotates on the pump front cover (2), a bearing seat (12) is installed on the side face of the rotating shaft (13) extending out of the pump front cover (2), a sealing gasket (15) is fixed on the inner side of a bearing installed inside the bearing seat (12), and driving, the driving gear (10) is meshed with a driven gear (16) arranged in the upper pump body (9), and a fixed shaft (1) is arranged in the driven gear (16).

2. A gear pump according to claim 1, characterized in that: lid (8) constitute for stainless steel behind pump protecgulum (2) and the pump, and pump protecgulum (2) and pump back lid (8) internally mounted go up pump body (9) and down pump body (3) and form for the integrative punching press of stainless steel to pump protecgulum (2) and pump back lid (8) and last pump body (9) junction set up sealed the pad.

3. A gear pump according to claim 1, characterized in that: back flow channel (4) have been seted up to inside lower extreme of lid (8) behind the pump, and liquid inlet (17) and liquid outlet (20) are connected respectively to back flow channel (4) both ends, and install fine setting bolt (7) on lid (8) behind the pump of liquid outlet (20) side, and relief valve (5) are connected through spring (6) to fine setting bolt (7) front end simultaneously.

4. A gear pump according to claim 1, characterized in that: the pump is characterized in that the front end of a fine adjustment bolt (7) arranged on the pump rear cover (8) is installed inside an inlet pipeline of the backflow channel (4) in a slidable mode through a safety valve (5) connected through a spring (6), the safety valve (5) is installed inside the inlet pipeline and blocked on a flow dividing pipeline, and the safety valve (5) is made of circular rubber.

5. A gear pump according to claim 1, characterized in that: go up pump body (9) internally mounted's driving gear (10) and driven gear (16) left side and go up and form outside pressure groove (18) between pump body (9) inner wall, and form inside pressure groove (19) between driving gear (10) and driven gear (16) right side and the last pump body (9) inner wall, the interval of inside pressure groove (19) is less than the interval of outside pressure groove (18) simultaneously, and inside pressure groove (19) arc structure occupies the inside third of last pump body (9).

6. A gear pump according to claim 1, characterized in that: the driving gear (10) and the rotating shaft (13) are fixed together, the rotating shaft (13) is mounted inside the pump rear cover (8) and can rotate, meanwhile, the driven gear (16) is rotatably connected with the fixed shaft (1), and two ends of the fixed shaft (1) are fixed inside the pump front cover (2) and the pump rear cover (8).