CN219713036U

CN219713036U - Anti-jamming oil pump

Info

Publication number: CN219713036U
Application number: CN202321175903.4U
Authority: CN
Inventors: 李庚鸿; 刘宗伟
Original assignee: Taizhou Xinteng Oil Pump Co ltd
Current assignee: Taizhou Xinteng Oil Pump Co ltd
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2023-09-19
Anticipated expiration: 2033-05-16

Abstract

The utility model relates to the technical field of internal combustion engine lubrication, in particular to an anti-jamming oil pump, which comprises an upper pump body and a filter screen, wherein the filter screen is arranged on the inner wall of the upper pump body, an anti-jamming device is arranged on the inner wall of the upper pump body, the anti-jamming device comprises a limiting stop step, the outer wall of the limiting stop step is in sliding connection with the upper pump body, the inner wall of the limiting stop step is in sliding connection with a connecting rod, the end part of the connecting rod is fixedly connected with a connecting block, and the outer wall of the connecting block is in rotary connection with a semicircle sphere. The engine oil enters the upper valve body and the lower valve body from the oil inlet, the engine oil extrudes the semicircular balls, so that the semicircular balls drive the connecting rods on the connecting blocks to slide on the inner walls of the limiting stop steps, the connecting rods limit the movement of the semicircular balls, the phenomenon that the semicircular balls move too far in the inner part is effectively avoided, friction between the semicircular balls and the upper valve body and friction between the semicircular balls and the lower valve body are reduced, and the service life of the engine oil pump for preventing clamping stagnation is prolonged.

Description

Anti-jamming oil pump

Technical Field

The utility model relates to the technical field of internal combustion engine lubrication, in particular to an anti-jamming oil pump.

Background

The engine oil pump mainly provides oil with sufficient pressure and flow for the whole engine lubrication system, and the oil pressure is kept within a certain range so as to ensure that each friction piece is sufficiently lubricated without damaging the related pressure bearing piece.

For example, although the problems that the existing pressure limiting valve and the existing oil pump with the pressure limiting valve are easy to be blocked by movement between a valve core and a valve body and high-pressure oil cannot be decompressed are solved, a C port is arranged in the middle of the lower end face of the valve core, and the steel ball is arranged in the valve core and is in sealing fit with the C port through the acting force of a spring; the below of case is equipped with the P mouth that is used for the oil feed, and high pressure oil acts on case and steel ball through P mouth and will carry out the pressure release to high pressure oil, and the steel ball is laminated with the spring, and when oil enters into inside to the spring when squeezing, the steel ball can move along with the distance of spring shrink, and this makes the steel ball can be too big in the inside frictional distance, makes long-time frictional steel ball warp or the surface is coarse, and the steel ball can't carry out effective shutoff in the entrance of oil pump, leads to anti-sticking stagnated oil pump life to shorten.

Disclosure of Invention

The utility model aims to solve the problems that the service life of an oil pump for preventing clamping stagnation is shortened due to deformation or surface roughness of a steel ball which rubs for a long time due to overlarge internal friction distance of the steel ball in the existing pressure limiting valve and the oil pump provided with the pressure limiting valve.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an oil pump of anti-sticking stagnation, includes pump body and filter screen, the filter screen is installed to the inner wall of going up the pump body, the inner wall of going up the pump body is equipped with anti-sticking stagnation device, anti-sticking stagnation device is including spacing fender step, the outer wall and the last pump body sliding connection of spacing fender step, the inner wall and the connecting rod sliding connection of spacing fender step, the tip and the connecting block fixed connection of connecting rod, the outer wall and the semicircle ball rotation of connecting block are connected, the tip and the case swing joint of semicircle ball.

Preferably, the end part of the valve core is movably connected with a spring, and the outer wall of the spring is movably connected with the plunger.

Preferably, the surface of the pump body is fixedly connected with the sealing gasket, the surface of the pump body is provided with an oil inlet, and the surface of the pump body is provided with a valve cavity.

Preferably, the outer wall of the upper pump body is provided with a mounting hole fixedly connected, the inner wall of the mounting hole is in threaded connection with a bolt, and the outer wall of the bolt is in threaded connection with the lower pump body.

Preferably, an oil outlet is arranged on the inner wall of the upper pump body.

The anti-jamming oil pump provided by the utility model has the beneficial effects that: the engine oil enters the upper valve body and the lower valve body from the oil inlet, the engine oil extrudes the semicircular balls, so that the semicircular balls drive the connecting rods on the connecting blocks to slide on the inner walls of the limiting stop steps, the connecting rods limit the movement of the semicircular balls, the phenomenon that the semicircular balls move too far in the inner part is effectively avoided, friction between the semicircular balls and the upper valve body and friction between the semicircular balls and the lower valve body are reduced, and the service life of the engine oil pump for preventing clamping stagnation is prolonged.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional elevation view of the structure of FIG. 1;

FIG. 3 is a schematic cross-sectional side view of FIG. 1;

fig. 4 is an enlarged schematic view of the structure at a in fig. 2.

In the figure: 1. the device comprises an upper pump body, a filter screen, a 3, an anti-jamming device, a 301, a limiting stop, a 302, a connecting rod, a 303, a connecting block, a 304, a semicircle sphere, a 305, a valve core, a 4, a spring, a 5, a sealing gasket, a 6, an oil inlet, a 7, a mounting hole, an 8, a bolt, a 9, a lower pump body, a 10, an oil outlet, a 11 and a valve cavity.

Detailed Description

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides an anti-jamming oil pump, including last pump body 1 and filter screen 2, filter screen 2 is installed to the inner wall of going up pump body 1, the inner wall of going up pump body 1 is equipped with anti-jamming device 3, filter the engine oil that flows into inside through filter screen 2, and reduce the friction of semicircle ball 304 and last pump body 1 and pump body 9 simultaneously, reduce the production metal piece, realize preventing the phenomenon of jamming that the internal work appears, anti-jamming device 3 includes spacing fender step 301, the outer wall and the last pump body 1 sliding connection of spacing fender step 301, the inner wall and the connecting rod 302 sliding connection of spacing fender step 301, the tip and the connecting block 303 fixed connection of connecting rod 302, the outer wall and the semicircle ball 304 rotation connection of connecting block 303, the tip and the case 305 swing joint of semicircle ball 304;

the engine oil enters the upper valve body 1 and the lower valve body 9 from the oil inlet 6, and the engine oil extrudes the semicircular ball 304, so that the semicircular ball 304 drives the connecting rod 302 on the connecting block 303 to slide on the inner wall of the limiting stop 301, the connecting rod 302 limits the movement of the semicircular ball 304, the phenomenon that the semicircular ball 304 moves too much in the inner part is effectively avoided, the friction between the semicircular ball 304 and the upper valve body 1 and the friction between the semicircular ball 304 and the lower valve body 9 are reduced, and the service life of the engine oil pump for preventing clamping stagnation is prolonged.

Referring to fig. 1, 2 and 4, the end of the valve core 305 is movably connected with the spring 4, the outer wall of the spring 4 is movably connected with the plunger 401, the surface of the pump body 1 is fixedly connected with the sealing gasket 5, the surface of the pump body 1 is provided with an oil inlet 6, and the surface of the pump body 1 is provided with a valve cavity 11.

Referring to fig. 1 and 2, an outer wall of an upper pump body 1 is fixedly connected with a mounting hole 7, an inner wall of the mounting hole 7 is in threaded connection with a bolt 8, an outer wall of the bolt 8 is in threaded connection with a lower pump body 9, and an oil outlet 10 is formed in the inner wall of the upper pump body 1.

Working principle:

firstly, the upper valve body 1 and the lower valve body 9 pass through the bolts 8 through the mounting holes 7, so that the upper valve body 1 and the lower valve body 9 are fixed in a sealing way, and the upper valve body 1, the lower valve body 9 and the valve core 305 are in clearance fit, so that engine oil enters the upper valve body 1 and the lower valve body 9 from the oil inlet 6, the engine oil extrudes the semicircular ball 304, the semicircular ball 304 drives the connecting rod 302 on the connecting block 303 to slide on the inner wall of the limiting stop 301, the limiting of the movement of the semicircular ball 304 is realized, the engine oil flows into the valve cavity 11, meanwhile, the valve core 305 extrudes the spring 4, the spring 4 is contracted indirectly, and finally, after the engine oil is filtered by the filter screen 2, the engine oil enters into a rotor structure to form high-pressure oil to be converged with low-pressure oil of other channels, and the pressure relief of the high-pressure oil is realized.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil pump of anti-sticking stagnation, includes pump body (1) and filter screen (2), filter screen (2) are installed to the inner wall of going up pump body (1), its characterized in that: the inner wall of going up pump body (1) is equipped with anti-sticking device (3), anti-sticking device (3) are including spacing fender step (301), the outer wall of spacing fender step (301) and last pump body (1) sliding connection, the inner wall of spacing fender step (301) and connecting rod (302) sliding connection, the tip and the connecting block (303) fixed connection of connecting rod (302), the outer wall and the semicircle ball (304) of connecting block (303) rotate to be connected, the tip and case (305) swing joint of semicircle ball (304).

2. The anti-sticking oil pump of claim 1, wherein: the end of the valve core (305) is movably connected with the spring (4), and the outer wall of the spring (4) is movably connected with the plunger (401).

3. The anti-sticking oil pump of claim 2, wherein: the surface of the upper pump body (1) is fixedly connected with the sealing gasket (5), an oil inlet (6) is formed in the surface of the upper pump body (1), and a valve cavity (11) is formed in the surface of the upper pump body (1).

4. The anti-sticking oil pump of claim 1, wherein: the outer wall of the upper pump body (1) is provided with a mounting hole (7) which is fixedly connected, the inner wall of the mounting hole (7) is in threaded connection with a bolt (8), and the outer wall of the bolt (8) is in threaded connection with a lower pump body (9).

5. The anti-sticking oil pump of claim 1, wherein: an oil outlet (10) is arranged on the inner wall of the upper pump body (1).