CN217582483U

CN217582483U - Self-pressure-relief bevel gear pump

Info

Publication number: CN217582483U
Application number: CN202221202282.XU
Authority: CN
Inventors: 缪橙凯; 缪任凯
Original assignee: Jiangyin Deling Machinery Co ltd
Current assignee: Jiangyin Deling Machinery Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-10-14
Anticipated expiration: 2032-05-19

Abstract

The utility model discloses a from pressure release gear pump, including first pump case, the second pump case is installed to one side of first pump case, the inside of second pump case is equipped with pressure release subassembly and relief valve, and the relief valve installs in the bottom of pressure release subassembly, and the internally mounted of first pump case and second pump case has initiative helical gear and driven helical gear. The pressure relief assembly and the pressure relief valve are arranged in the second pump shell and are communicated with the inside of the first pump shell, the fact that the oil pressure in a pipeline behind the pressure relief valve is smaller than the range of a hydraulic pressure meter is guaranteed, the pressure relief valve is comprehensively applied to the pump, the driving bevel gear and the driven bevel gear of the bevel gears are arranged, the oil seal space is communicated to the oil inlet, the situation that the oil seal leaks oil or shifts due to overlarge pressure at the oil seal position is avoided, the pressure relief valve in the pipeline is used as a pressure relief device in the pump, the advantages that vibration is small, noise is low, pipeline arrangement is simple, pressure in the pipeline is stable, the oil number with high applicable viscosity is large, limit oil pressure in the pipeline can be adjusted, reliability of the oil seal in the pump is improved, oil leakage is not prone to occurring.

Description

Self-pressure-relief bevel gear pump

Technical Field

The utility model relates to a gear pump field specifically is from pressure release bevel gear pump.

Background

The gear pump is a rotary pump which can transfer liquid or pressurize it by means of the change and movement of working volume formed between pump cylinder and meshed gear, and is formed from two gears, pump body and front and rear covers, when the gears are rotated, the volume of space of gear disengagement side is changed from small to large, and formed into vacuum to suck liquid, and the volume of space of gear meshing side is changed from large to small to squeeze liquid into pipeline, and the suction cavity and discharge cavity are separated by means of meshing line of two gears, and the pressure of discharge outlet of gear pump is completely dependent on the resistance of pump outlet.

The existing gear pump in the market is mostly used for hydraulic oil, large vibration is easily caused, the oil pressure change is large due to overlarge temperature difference (large oil viscosity change) in winter and summer, namely a hydraulic meter in a pipeline cannot select a proper range, and the conditions of 0 value or meter explosion and the like can occur.

To solve this problem, the present application proposes a self-relieving bevel gear pump.

SUMMERY OF THE UTILITY MODEL

To current problem, the utility model provides a from pressure release bevel gear pump, the problem that provides in can effectual solution background art.

In order to solve the above problem, the utility model adopts the following technical scheme:

from pressure release helical gear pump, including first pump case, the second pump case is installed to one side of first pump case, the inside of second pump case is equipped with pressure release subassembly and relief valve, and the relief valve installs the bottom at pressure release subassembly, the internally mounted of first pump case and second pump case has initiative helical gear and driven helical gear, the both sides of driven helical gear are run through and are seted up oil blanket department pressure release pore, the inside of first pump case is equipped with oil blanket and axis body, and the oil blanket cup joints on the surface of axis body, oil-out and oil inlet have been seted up respectively to the top and the bottom of first pump case.

As the utility model discloses further scheme again: the surfaces of the driving bevel gear and the driven bevel gear are meshed.

As a further aspect of the present invention: the oil outlet and the oil inlet are communicated with the inside of a pressure relief pore passage at the oil seal.

As the utility model discloses further scheme again: one end of the shaft body is positioned outside the first pump shell.

As the utility model discloses further scheme again: the shaft body is connected with the connecting part of the shell wall of the first pump shell through an oil seal.

As a further aspect of the present invention: and the pressure relief pore passage at the oil seal is communicated with the inside of the first pump shell.

Compared with the prior art, the beneficial effects of the utility model are that: this from pressure release helical gear pump, through set up pressure release subassembly and relief valve and the inside intercommunication of first pump case in the second pump case, guarantee that the oil pressure is less than the hydraulic pressure meter range in the pipeline behind the relief valve, use the relief valve in the pump comprehensively, and through the initiative helical gear and the driven helical gear that set up the helical gear, communicate the oil inlet to the oil blanket space, avoid oil blanket department pressure too big oil blanket oil leak or aversion that leads to, and regard the relief valve in the pipeline as the pressure relief device in the pump, it is little to have realized the vibration, the noise is low, the pipe arrangement is simple, the pressure is steady in the pipeline, the higher oil number of applicable viscosity, limit oil pressure in the adjustable pipeline, improve the reliability of oil blanket in the pump, advantages such as difficult oil leak.

Drawings

FIG. 1 is a sectional plan view of a self-relieving bevel gear pump structure;

FIG. 2 is a front sectional view of a self-relieving bevel gear pump.

In the figure: 1. a first pump casing; 2. a second pump casing; 3. a pressure relief assembly; 4. a pressure relief valve; 5. a driving bevel gear; 6. a driven helical gear; 7. a pressure relief duct at the oil seal; 8. oil sealing; 9. an oil outlet; 10. and an oil inlet.

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 efforts all belong to the protection scope of the present invention.

As shown in fig. 1-2, in the present embodiment, the present embodiment is described with reference to fig. 1 to 2, and the present embodiment provides a self-pressure-relief helical gear pump, which includes a first pump housing 1, a second pump housing 2 is installed on one side of the first pump housing 1, a pressure relief assembly 3 and a pressure relief valve 4 are installed inside the second pump housing 2, and the pressure relief valve 4 is installed at the bottom of the pressure relief assembly 3, a driving helical gear 5 and a driven helical gear 6 are installed inside the first pump housing 1 and the second pump housing 2, pressure relief ducts 7 at oil seals are opened through both sides of the driven helical gear 6, an oil seal 8 and a shaft body are installed inside the first pump housing 1, and the oil seal 8 is sleeved on the surface of the shaft body, and an oil outlet 9 and an oil inlet 10 are respectively opened at the top and the bottom of the first pump housing 1.

The utility model discloses in, the surface of initiative helical gear 5 and driven helical gear 6 meshes mutually.

The utility model discloses in, oil-out 9 and oil inlet 10 all are linked together with oil blanket department pressure release pore 7 is inside.

The utility model discloses in, the one end of axis body is located the outside of first pump case 1.

The utility model discloses in, the axis body is connected through oil blanket 8 with 1 conch wall junction of first pump case.

The utility model discloses in, oil blanket department pressure release pore 7 communicates in the inside of first pump case 1.

The working principle is as follows: the driven bevel gear shaft 6 is driven by the driving bevel gear shaft 5, oil suction at the oil inlet 10 and oil pressing at the oil outlet 9 are achieved, high-pressure oil leaking from the oil outlet 9 to the oil seal 8 in the operation process leaks to the oil inlet through the pressure relief hole 7 at the oil seal 10, the high-pressure oil at the oil outlet 9 provides upward thrust for the pressure relief valve 4, and when the upward thrust is larger than the pretightening force of the valve along with the rise of the oil pressure, the valve moves upwards to open a communication path from the oil outlet to the oil suction port, and pressure relief is achieved.

It should be noted that, in this document, relational terms such as first and second, and the like are only used for distinguishing one entity or operation from another entity or operation, and do not necessarily require or imply any actual relation or order between the entities or operations, and furthermore, the terms "comprise", or any other variation thereof are intended to cover a non-exclusive inclusion, so that a process, a method, an article, or an apparatus including a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements 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 various 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. From pressure release gear pump, including first pump case (1), its characterized in that, second pump case (2) are installed to one side of first pump case (1), the inside of second pump case (2) is equipped with pressure release subassembly (3) and relief valve (4), and relief valve (4) install the bottom in pressure release subassembly (3), the internally mounted of first pump case (1) and second pump case (2) has initiative helical gear (5) and driven helical gear (6), oil blanket department pressure release pore (7) have been seted up to the both sides of driven helical gear (6) through, the inside of first pump case (1) is equipped with oil blanket (8) and axis body, and oil blanket (8) cup joint the surface at the axis body, oil-out (9) and oil inlet (10) have been seted up respectively to the top and the bottom of first pump case (1).

2. The self-relieving bevel gear pump according to claim 1, wherein the surfaces of the driving bevel gear (5) and the driven bevel gear (6) are engaged.

3. The self-pressure-relief bevel gear pump according to claim 1, wherein the oil outlet (9) and the oil inlet (10) are both communicated with the inside of a pressure-relief duct (7) at the oil seal.

4. Self-bleeding bevel gear pump according to claim 1, characterised in that one end of the shaft body is located outside the first pump housing (1).

5. The self-relieving bevel gear pump according to claim 1, characterized in that the connection between the shaft body and the wall of the first pump housing (1) is connected by an oil seal (8).

6. The self-bleeding bevel gear pump according to claim 1, characterized in that the oil seal bleed orifice (7) communicates with the interior of the first pump housing (1).