CN214698133U

CN214698133U - Filter with pressure regulating valve

Info

Publication number: CN214698133U
Application number: CN202120369102.6U
Authority: CN
Inventors: 陈惠英; 张鹏
Original assignee: Shanghai Inter Auto Parts Co ltd
Current assignee: Shanghai Inter Auto Parts Co ltd
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2021-11-12
Anticipated expiration: 2031-02-10

Abstract

The utility model belongs to the technical field of a technique of filter and specifically relates to a filter with air-vent valve is related to, including casing, filter core lower cover, filter core paper, air-vent valve, filter core paper is installed and is covered under the filter core, filter core paper and filter core lower cover all are located the casing, filter core lower cover integrated into one piece has the center tube that is located filter core paper inside, the center tube is kept away from wall goes up sunken being formed with the mounting groove in the one end of filter core lower cover, the air-vent valve includes the valve body, the valve body with mounting groove location installation cooperation. Realize accurate location installation air-vent valve, with the air-vent valve fixed to the mounting groove in to the mounted position that makes between air-vent valve and filter element paper, the filter core lower cover is all accurate relatively.

Description

Filter with pressure regulating valve

Technical Field

The application relates to the field of filters, in particular to a filter with a pressure regulating valve.

Background

The filter is a part for filtering foreign substances or gas through filter paper, and is generally an automobile filter, which is a part of an engine. A pressure regulating valve is arranged in a general filter and used for regulating oil pressure in the filter to avoid the situation of overlarge pressure.

In the related technology, in a chinese patent document with patent No. CN201786509U, an integrated fuel filter with a pressure regulating valve is described, the filter is composed of a shell, a shell end cover and a filter element, the pressure regulating valve is installed in the filter, the pressure regulating valve is composed of a sealing ring, a membrane pressing ring, an oil sealing pad seat, an oil sealing pad, a nozzle guide seat, a valve cover and a membrane pressing ring, one end of the nozzle is a circular tube inserted in a guide hole of the nozzle guide seat, the other end is a nozzle opening, the outer wall of the nozzle opening is fixed with the axis position of the sealing ring and the membrane pressing ring, the bottom surface of the sealing ring is fixed on the cavity wall of the shell end cover in contact with the valve cover, the oil sealing pad seat opposite to the bottom of the nozzle opening is installed at the bottom of the valve cover, and an oil sealing pad is installed in the oil sealing pad seat. The pressure regulating valve is arranged in the end cover of the cylinder body and sealed by a sealing ring to eliminate the possibility of leakage in the pressure regulating valve, and then the pressure regulating valve is welded with the filter element and the shell of the cylinder body after being assembled, the filter is provided with three pipelines, one pipeline is an inlet from a fuel pump of the fuel tank, the other pipeline is an outlet from partial fuel to a nozzle, the other pipeline is an oil return port from which most fuel is filtered back to the fuel tank, the pressure of the outlet and the oil return port is controlled by the pressure regulating valve, when the pressure does not reach the set working pressure of a fuel system, the pressure regulating valve is not opened, all the fuel flows to the outlet of the nozzle end, but the fuel consumed by the nozzle is far less than the fuel supply quantity of the fuel pump, so the pressure in the filter is continuously increased until the pressure regulating valve is opened, most fuel flows back to the fuel tank, and the nozzle end only flows the required fuel.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the pressure regulating valve is installed in the filter, the requirement on the accuracy of the installation position of the pressure regulating valve in the filter is high, the efficiency of the pressure regulating valve is easily influenced when the installation position deviates, and the pressure regulating valve is roughly installed manually and easily deviates due to the fact that the pressure regulating valve is not located.

SUMMERY OF THE UTILITY MODEL

In order to install the location air-vent valve more accurately in the filter, this application provides a filter with air-vent valve.

The application provides a filter with pressure-regulating valve adopts following technical scheme:

the utility model provides a filter with air-vent valve, includes casing, filter core lower cover, filter core paper, air-vent valve, the filter core paper is installed and is covered under the filter core, filter core paper and filter core lower cover all are located the casing, filter core lower cover integrated into one piece has the center tube that is located filter core paper inside, the center tube is kept away from sunken mounting groove that is formed with on the one end inner tube wall of filter core lower cover, the air-vent valve includes the valve body, the valve body with the cooperation of mounting groove location installation.

Through adopting above-mentioned technical scheme, filter core lower cover integrated into one piece center tube sets up the mounting groove on the center tube, and the mounting groove is used for accurate location installation air-vent valve, fixes the air-vent valve to the mounting groove in to make the mounted position between air-vent valve and filter core paper, the filter core lower cover all accurate relatively.

Preferably, the bottom of the shell is provided with a pressure relief pipe, the pressure relief pipe is communicated with the inside of the central pipe, the mounting groove is communicated with the inside of the central pipe, and a pressure relief outlet of the pressure regulating valve is positioned in the mounting groove.

Through adopting above-mentioned technical scheme, when needing the pressure release to adjust, pressure can be from the pressure release export of air-vent valve, the inside of center tube, outside the pressure release pipe pressure release casing, adopts the scheme that pressure release export, center tube, pressure release pipe are linked together, and the guarantee filter is normal pressure release under the too big operating mode of oil pressure.

Preferably, the bottom of the valve body is sleeved with a first sealing ring for sealing a gap between the valve body and the mounting groove.

Through adopting above-mentioned technical scheme, the clearance between valve body and the mounting groove is lived in first sealing washer seal to avoid partial oil to leak from the clearance between valve body and the mounting groove, make the installation have certain leakproofness between valve body and the mounting groove.

Preferably, be formed with on the inner wall of the mounting groove and place the step, first sealing washer is arranged in and is placed on the step, fixed cover is equipped with the support ring on the valve body, the bottom surface of support ring with first sealing washer is inconsistent.

Through adopting above-mentioned technical scheme, place the step and make placing of air-vent valve more convenient, stable, the support ring provides first sealing washer and supports the valve body of air-vent valve, makes placing of air-vent valve have stable by the support nature.

Preferably, the bottom surface integrated into one piece has the holding ring in the casing, the cover is equipped with the sealing ring on the holding ring, the sealing ring with the lower mouth of pipe location socket joint of center tube.

Through adopting above-mentioned technical scheme, the sealing ring can seal up the clearance between center tube and the holding ring, when making liquid flow in the center tube, can not follow the clearance outflow between center tube bottom and the holding ring, and the liquid in the guarantee center tube flows from the pressure release pipe smoothly.

Preferably, the outer peripheral side of the sealing ring is provided with a positioning step, and the end part of the lower pipe orifice of the central pipe is matched with the positioning step in a positioning manner.

Through adopting above-mentioned technical scheme, the location step makes the seal ring play more firm effect to the support of center tube.

Preferably, the bottom of the filter element lower cover is integrally formed with a reinforcing rib, and the reinforcing rib is abutted to the inner bottom surface of the shell.

Through adopting above-mentioned technical scheme, the bottom structural strength of filter core lower cover can be strengthened to the strengthening rib, and the strengthening rib is inconsistent with the casing inner bottom surface in addition, can support the filter core lower cover on the bottom surface in the casing to make the filter core lower cover play fine arrangement effect.

Preferably, the casing is internally provided with a filter element upper cover, the filter element upper cover is fixedly connected with the top of the filter element paper, and the outer edge of the filter element upper cover is in sealing fit with the inner side wall of the casing.

Through adopting above-mentioned technical scheme, filter core upper cover and the sealed cooperation of casing inside wall to guarantee the leakproofness between filter core upper cover and the casing inside wall, avoid oil to leak from the clearance between filter core upper cover and the casing inside wall.

Preferably, the top cap is installed at the casing top, the sunken constant head tank that is formed with of top cap internal surface, the constant head tank with valve body location fit.

Through adopting above-mentioned technical scheme, the installation accuracy that can make between top cap and the valve body improves with the valve body location installation of constant head tank, and the valve body can be stabilized between top cap and casing.

Preferably, the valve body is sleeved with a third sealing ring for sealing a gap between the valve body and the positioning groove, the valve body is fixedly sleeved with a plastic ring, the outer ring surface of the plastic ring is abutted to the inner side surface of the positioning groove in a fitting manner, and the setting height of the plastic ring is lower than that of the third sealing ring.

Through adopting above-mentioned technical scheme, the plastics ring can prevent that the third sealing washer from scurrying about on the valve body, and can cooperate the third sealing washer, plays double-seal's effect to the clearance between valve body and the constant head tank.

In summary, the present application includes at least one of the following beneficial technical effects:

the pressure regulating valve is accurately positioned and installed and fixed in the installation groove, so that the installation positions of the pressure regulating valve, the filter element paper and the filter element lower cover are relatively accurate;

the strengthening rib can strengthen the bottom structural strength of filter core lower cover, also can support the filter core lower cover on the bottom surface in the casing.

Drawings

FIG. 1 is a schematic cross-sectional view of a filter with a pressure regulating valve according to an embodiment of the present disclosure.

Fig. 2 is a schematic cross-sectional view of an upper filter element cover, a lower filter element cover, filter element paper and a central tube in a filter with a pressure regulating valve according to an embodiment of the present disclosure.

FIG. 3 is a schematic cross-sectional view of a pressure regulating valve in a filter with a pressure regulating valve according to an embodiment of the present disclosure.

Description of reference numerals: 1. a housing; 101. a lower liquid inlet pipe; 102. a pressure relief pipe; 103. an upper opening; 2. a top cover; 201. positioning a groove; 202. an upper liquid outlet pipe; 3. a filter element lower cover; 301. reinforcing ribs; 4. a filter element paper; 5. a filter element upper cover; 501. a U-shaped groove; 502. a second seal ring; 601. a third seal ring; 602. a plastic ring; 7. a central tube; 701. mounting grooves; 702. placing a step; 8. a positioning ring; 9. a seal ring; 901. positioning a step; 10. a support ring; 11. a first seal ring; 12. a framework; 13. a flow channel; 14. a channel; 15. a valve body; 1501. a valve body lower cover; 1502. a valve body upper cover; 1503. adjusting the spring; 1504. a spring seat; 1505. a valve stem; 1506. adjusting the liquid outlet pipe; 1507. a pressure relief outlet; 1508. a liquid inlet hole; 1509. a membrane.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses filter with pressure-regulating valve.

Referring to fig. 1, the filter includes a casing 1, a top cover 2, filter paper 4, a filter upper cover 5 and a filter lower cover 3, the casing 1 is cylindrical and has an upper opening 103, the filter paper 4, the filter upper cover 5 and the filter lower cover 3 are installed inside the casing 1, and the top cover 2 is welded and covered on the upper opening 103 of the casing 1. The top of filter core paper 4 splices with filter core upper cover 5, the bottom of filter core paper 4 splices with filter core lower cover 3, and filter core paper 4, the central axis of filter core upper cover 5 and filter core lower cover 3 coincides mutually, the center integrated into one piece of filter core lower cover 3 has center tube 7, the central axis of center tube 7 coincides mutually with the central axis of filter core lower cover 3, the top of center tube 7 is sunken to be formed with mounting groove 701, the air-vent valve is installed to the location in mounting groove 701, the air-vent valve is used for adjusting 1 interior liquid pressure of casing, mounting groove 701 plays the effect of location installation to the pressure-vent valve.

Referring to fig. 1 and 2, a pressure relief pipe 102 is integrally formed at the bottom of the housing 1, the pressure relief pipe 102 is located at the center of the bottom of the housing 1 and is communicated with the inside of the central pipe 7, the central axis of the pressure relief pipe 102 coincides with the central axis of the central pipe 7, a lower liquid inlet pipe 101 is further integrally formed at the bottom of the housing 1, the lower liquid inlet pipe 101 is communicated with the inside of the housing 1, the lower liquid inlet pipe 101 is located at a position close to the edge of the bottom of the housing 1, and the central axis of the lower liquid inlet pipe 101 is perpendicular to the bottom surface of the housing 1.

The positioning ring 8 protruding out of the inner bottom surface of the shell 1 is integrally formed on the inner bottom surface of the shell 1, the central axis of the positioning ring 8 coincides with the central axis of the pressure relief pipe 102, and the inner annular hole of the positioning ring 8 is communicated with the pipe orifice at one end of the pressure relief pipe 102 and the pipe orifice at one end of the central pipe 7. The outer ring surface of the positioning ring 8 is sleeved with a sealing ring 9, the sealing ring 9 is made of rubber materials, and the central axis of the sealing ring 9 coincides with the central axis of the positioning ring 8.

The outer annular surface of the sealing ring 9 is recessed downwards from the top to form a positioning step 901, the positioning step 901 surrounds the sealing ring 9 in a circle, the bottom pipe orifice of the central pipe 7 is sleeved on the positioning step 901 of the sealing ring 9, and the corner of the integrated forming position of the central pipe 7 and the filter element lower cover 3 is attached to the positioning step 901.

Referring to fig. 1 and 2, the filter element lower cover 3 is circular, an inner annular hole of the filter element lower cover 3 is formed by integrally forming a central tube 7, the central tube 7 extends along the length direction of the filter element paper 4, a tube opening at one end of the central tube 7 close to the filter element lower cover 3 is horn-shaped, and the inner diameter of the tube opening is gradually reduced from low to high.

The bottom surface integrated into one piece of filter core lower cover 3 has strengthening rib 301, and strengthening rib 301 sets up along the radial extension of filter core lower cover 3, and the bottom of strengthening rib 301 is inconsistent with the interior bottom surface of casing 1.

The mounting groove 701 has been seted up to the top surface of center tube 7, and the tank bottom of mounting groove 701 link up with the inside of center tube 7 mutually, and the notch of mounting groove 701 is located the top mouth of pipe of center tube 7, and the bottom of mounting groove 701 is big-end-up's trapezoidal that falls. The inner wall of the mounting groove 701 is provided with a placing step 702, and the pressure regulating valve is embedded in the mounting groove 701 in an interference fit mode through the placing step 702.

Referring to fig. 1 and 3, the pressure regulating valve includes a valve body 15, the valve body 15 includes a valve body upper cover 1502 and a valve body lower cover 1501, the valve body upper cover 1502 and the valve body lower cover 1501 are fixedly connected from top to bottom, a liquid inlet hole 1508 penetrating through the inside and outside of the valve body 15 is arranged at the edge of the bottom surface of the valve body lower cover 1501, the liquid inlet hole 1508 has two holes, the two holes are symmetrically distributed about the axis of the valve body 15, the valve body lower cover 1501 is arranged at the center and is integrally formed with an adjusting liquid outlet pipe 1506, the adjusting liquid outlet pipe 1506 protrudes out of the bottom surface of the valve body lower cover 1501, the adjusting liquid outlet pipe 1506 is communicated with the inside and the outside of the valve body 15, a lower pipe opening of the adjusting liquid outlet pipe 1506 is a pressure relief outlet 1507, and the pressure regulating liquid outlet pipe is arranged in a mounting groove 701, so that the pressure regulating liquid outlet pipe is communicated with a central pipe 7 and a pressure relief pipe 102.

Install adjusting spring 1503 in the valve body 15, spring holder 1504, diaphragm 1509, valve rod 1505, adjusting spring 1503's top is fixed at the interior top surface of valve body upper cover 1502, bottom and spring holder 1504 fixed connection, and the bottom of spring holder 1504 and the one end fixed connection of valve rod 1505, the other end of valve rod 1505 inserts in adjusting the drain pipe 1506, and with adjusting the drain pipe 1506 cooperation of pegging graft, the fixed cover of diaphragm 1509 is located on spring holder 1504, and the border fixed clamp of diaphragm 1509 is between valve body upper cover 1502 and valve body lower cover 1501, diaphragm 1509 separates into two independent cavities with valve body upper cover 1502 and valve body lower cover 1501.

Pressure oil enters the valve body 15 through the liquid inlet hole 1508, and with the increasing pressure of the pressure oil, the pressure oil pushes the diaphragm 1509 upward, the adjusting spring 1503 is compressed, the valve rod 1505 is withdrawn from the adjusting liquid outlet pipe 1506, a gap for oil supply flow is formed between the valve rod 1505 and the adjusting liquid outlet pipe 1506, and the pressure oil enters the central pipe 7 through the adjusting liquid outlet pipe 1506 and then is discharged out of the housing 1 through the pressure discharge pipe 102.

Referring to fig. 1, the outer wall of the adjusting drain pipe 1506 is fixedly sleeved with a support ring 10 and a first seal ring 11, the support ring 10 is made of elastic rubber material, the first seal ring 11 is located on the outer side wall of the bottom of the adjusting drain pipe 1506, the setting height of the first seal ring 11 is lower than that of the support ring 10, the first seal ring 11 is abutted to the support ring 10, the first seal ring 11 is arranged on the placing step 702, and the first seal ring 11 is abutted to the inner wall of the mounting groove 701 so as to seal and adjust the gap between the drain pipe 1506 and the mounting groove 701.

Referring to fig. 1 and 2, a framework 12 is integrally formed at the bottom of the upper cover 5 of the filter element at the center, the framework 12 is located in the filter element paper 4, the outer side edge of the framework 12 is abutted to the inner top edge of the filter element paper 4, a channel 14 penetrating through the framework 12 from top to bottom is formed on the framework 12, the top of the central tube 7 penetrates through the channel 14 from low to high, a certain gap is formed between the inner wall of the channel 14 and the outer wall of the central tube 7, a flow channel 13 for oil supply to flow is formed between the inner wall of the filter element paper 4 and the outer wall of the central tube 7, and the flow channel 13 is communicated with a liquid inlet hole 1508 on the pressure regulating valve through the gap. A gap is provided between the outer side wall of the lower valve body 15 and the top inner side wall of the framework 12, and oil can enter the top area of the filter element upper cover 5 through the gap.

U type groove 501 has been seted up to the outer circumference border of filter core upper cover 5, and U type groove 501 internal fixation cover is equipped with second sealing washer 502, and the outer lane of second sealing washer 502 is laminated mutually with casing 1's upper shed 103 inner wall and is contradicted, and second sealing washer 502 seals the clearance between department filter core upper cover 5 and the casing 1 inner wall.

Referring to fig. 1, the top cap 2 is welded to the top of the housing 1, the top cap 2 covers the upper opening 103 of the housing 1, a positioning groove 201 is concavely formed in the center of the top cap 2 in a direction away from the upper cover 5 of the filter element, the positioning groove 201 extends along the height direction of the top cap 2, and the positioning groove 201 is in positioning fit with the upper cover 1502 of the valve body.

A plastic ring 602 and a third sealing ring 601 are fixedly sleeved on the outer circumference of the valve body upper cover 1502, the setting height of the third sealing ring 601 is higher than that of the plastic ring 602, the outer ring of the third sealing ring 601 is attached to and abutted against the inner wall of the positioning groove 201, and the third sealing ring 601 seals the gap between the positioning groove 201 and the valve body upper cover 1502; the plastic ring 602 is made of elastic plastic, the top of the plastic ring 602 abuts against the third sealing ring 601, and the outer annular surface of the plastic ring 602 abuts against the inner groove wall of the positioning groove 201 in a fit manner.

Upper liquid outlet pipe 202 is integrally formed on the surface of top cover 2, upper liquid outlet pipe 202 is located at the edge of the surface of top cover 2, upper liquid outlet pipe 202 is communicated with the top area of upper cover 5 of filter element and the outside of casing 1, and the central axis of upper liquid outlet pipe 202 is perpendicular to the surface of top cover 2.

The implementation principle of the filter with the pressure regulating valve in the embodiment of the application is as follows:

under the working condition that the oil pressure in the shell 1 is normal, oil in the oil tank enters the shell 1 of the filter from the lower liquid inlet pipe 101 through pumping, and is filtered by the outer side of the filter element paper 4 to enter the flow channel 13 between the filter element paper 4 and the central pipe 7, most of the oil flows into the top area of the filter element upper cover 5 through the flow channel 13, the channel 14, the gap between the valve body lower cover 1501 and the framework 12 in sequence, and then flows out from the upper liquid outlet pipe 202; a small part of oil enters the pressure regulating valve through the flow passage 13, the channel 14 and the liquid inlet hole 1508 in sequence, and because the oil pressure in the shell 1 is normal, the pressure of the oil entering the pressure regulating valve is lower than the set pressure value of the pressure regulating valve, the membrane 1509 cannot be jacked, the pressure regulating valve is in a non-working state, and the oil can only flow out from the upper liquid outlet pipe 202.

Under the working condition that the oil pressure in the shell 1 is too high, a small part of the oil entering the pressure regulating valve can push the membrane 1509 to bulge upwards, the regulating spring 1503 is compressed, the valve rod 1505 is withdrawn from the regulating liquid outlet pipe 1506, the oil enters the central pipe 7 from the pressure relief outlet 1507 on the regulating liquid outlet pipe 1506 and is discharged out of the shell 1 from the pressure relief pipe 102 communicated with the other end of the central pipe 7, and therefore the pressure relief of the filter is completed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a filter with air-vent valve, includes casing (1), filter core lower cover (3), filter core paper (4), air-vent valve, install on filter core lower cover (3) filter core paper (4), filter core paper (4) and filter core lower cover (3) all are located casing (1), its characterized in that: the filter element lower cover (3) integrated into one piece has center tube (7) that is located filter element paper (4) inside, center tube (7) are kept away from the sunken mounting groove (701) that is formed with in the one end inner tube wall of filter element lower cover (3), the air-vent valve includes valve body (15), valve body (15) with mounting groove (701) location installation cooperation.

2. A filter with pressure regulating valve according to claim 1, wherein: casing (1) bottom is provided with pressure release pipe (102), pressure release pipe (102) are linked together with the inside of center tube (7), mounting groove (701) are linked together with center tube (7) inside, pressure release export (1507) of air-vent valve are located mounting groove (701).

3. A filter with a pressure regulating valve according to claim 2, wherein: the bottom of the valve body (15) is sleeved with a first sealing ring (11) for sealing a gap between the valve body (15) and the mounting groove (701).

4. A filter with a pressure regulating valve according to claim 3, wherein: be formed with on the inner wall of the mounting groove (701) and place step (702), first sealing washer (11) are arranged in and are placed on step (702), fixed cover is equipped with support ring (10) on valve body (15), the bottom surface of support ring (10) with first sealing washer (11) are inconsistent.

5. A filter with pressure regulating valve according to claim 1, wherein: bottom surface integrated into one piece has holding ring (8) in casing (1), the cover is equipped with sealing ring (9) on holding ring (8), sealing ring (9) with the lower mouth of pipe location of center tube (7) cup joints.

6. A filter with pressure regulating valve according to claim 5, wherein: and a positioning step (901) is arranged on the outer peripheral side of the sealing ring (9), and the end part of the lower pipe orifice of the central pipe (7) is in positioning fit with the positioning step (901).

7. A filter with a pressure regulating valve according to claim 5 or 6, characterized in that: the bottom integrated into one piece of filter core lower cover (3) has strengthening rib (301), strengthening rib (301) and casing (1) interior bottom surface are inconsistent.

8. A filter with pressure regulating valve according to claim 1, wherein: be provided with filter core upper cover (5) in casing (1), filter core upper cover (5) with the top fixed connection of filter core paper (4), filter core upper cover (5) outside border with casing (1) inside wall sealing fit.

9. A filter with pressure regulating valve according to claim 1, wherein: top cap (2) are installed at casing (1) top, top cap (2) internal surface is sunken to be formed with constant head tank (201), constant head tank (201) with valve body (15) location fit.

10. A filter with pressure regulating valve according to claim 9, wherein: the valve body (15) is sleeved with a third sealing ring (601) for sealing a gap between the valve body (15) and the positioning groove (201), the valve body (15) is fixedly sleeved with a plastic ring (602), the outer ring surface of the plastic ring (602) is attached to and abutted against the inner side surface of the positioning groove (201), and the setting height of the plastic ring (602) is lower than that of the third sealing ring (601).