CN211649193U

CN211649193U - Liquid filter structure with valve

Info

Publication number: CN211649193U
Application number: CN201922349902.7U
Authority: CN
Inventors: 赵宸; 马千
Original assignee: Mann and Hummel Filter Shanghai Co Ltd
Current assignee: Mann and Hummel Filter Shanghai Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-10-09
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a liquid filter structure with valve, which comprises a shell, an elastic sheet and a valve body, wherein the shell is provided with a holding cavity, the upper end of the holding cavity is an inlet, the lower end of the holding cavity is provided with an outlet, a limit step is arranged in the holding cavity, the elastic sheet is arranged at the limit step, the elastic sheet is in a ring shape, and the elastic sheet and the shell are arranged in an interference fit way; the lower end of the valve body is limited by the elastic sheet, and the upper end of the valve body is pressed by an installation object, so that the valve body and the accommodating cavity are sealed. Compared with the prior art, the elastic sheet structure of the utility model is not limited by space, does not need machining, and saves cost; and an adjusting spring is arranged to ensure that the sealing ring is contacted with the sealing surface.

Description

Liquid filter structure with valve

Technical Field

The utility model relates to a mechanical seal field, concretely relates to structure is strained to liquid of valve is equipped with.

Background

The valve has many kinds and various installation modes, but the valve is difficult to install in special places with limited space or limited processing modes.

As patent CN209430814U discloses a mounting structure for spring valve, which comprises a housin, be equipped with the cavity in the middle of the casing, be equipped with spring and piston in the cavity, spring one end is reducing spring and by spacing in the cavity, and the other end of spring offsets with the piston, the casing is equipped with the communicating pressure inlet of cavity and pressure outlet, the piston is stopped up pressure inlet and pressure outlet under the effect of spring to by jack-up make pressure inlet and pressure outlet communicate with each other and carry out the pressure release under the high pressure condition.

The mounting mode of present valve is, with the bayonet socket direct with the casing hookup of valve body below to the restriction valve body does not let it deviate from, but under some special circumstances, because space restriction, perhaps the unable direct molding of mould, the unable shaping of structure with the valve body complex on the casing, if it is with machine tooling again the cost very high.

In addition, generally, the traditional design is often directly designed according to theoretical size, and when an installation object is pressed to a theoretical position, the sealing ring and the sealing surface are attached to each other, but in an actual situation, the traditional design is not always the same. Firstly, the installation itself is subject to tolerances in the height direction during production, and secondly, the position of the valve body is also influenced by production and assembly. Therefore, the position of the final mounting object and the position of the valve body joint face are different from the theoretical position, the leakage problem is easily caused, and the pressure release valve is particularly applied to a pressure release valve in an automobile liquid filter (fuel filter) and has higher requirements on mounting precision and sealing property.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a liquid that is equipped with valve strains structure for solving above-mentioned problem, makes the valve body install theoretical mounted position, effectively guarantees the contact of sealing washer and sealed face, avoids leaking the problem.

The purpose of the utility model is realized through the following technical scheme:

a liquid filter structure with a valve comprises a shell, an elastic sheet and a valve body, wherein the shell is provided with an accommodating cavity, the upper end of the accommodating cavity is an inlet, the lower end of the accommodating cavity is provided with an outlet, a limiting step is arranged in the accommodating cavity, the elastic sheet is arranged at the limiting step, the elastic sheet is in a ring shape, and the elastic sheet and the shell are arranged in an interference fit manner; the lower end of the valve body is limited by the elastic sheet, and the upper end of the valve body is pressed by an installation object, so that the valve body and the accommodating cavity are sealed.

The shell fragment structure not only does not receive the restriction in space, and need not machine tooling, saves the cost, uses the shell fragment can directly impress the casing, can install the valve body to spacing step department, guarantees the contact of sealing washer and sealed face, avoids leaking.

Furthermore, a sealing surface is arranged at an inlet of the accommodating cavity, a sealing ring is arranged on the valve body, and when the valve body is installed in place, the sealing ring is located at the sealing surface, so that the valve body is sealed with the shell.

Furthermore, the accommodating cavity is in a stepped cylindrical shape with a thick upper part and a thin lower part.

Furthermore, an inlet at the upper end of the accommodating cavity is provided with a guide round angle.

Furthermore, the bottom of the accommodating cavity is communicated with the outside through the outlet, the outlet is obliquely arranged, the upper end of the outlet is communicated with the bottom of the accommodating cavity, and the lower end of the outlet is communicated with the outside.

Further, the limiting step is arranged at the upper part of the outlet.

Furthermore, the valve body comprises a jacking spring, a bracket, an adjusting spring and a top cover, the bracket comprises a middle connecting disc, a guide rib connected to the lower part of the middle connecting disc and a connecting sleeve at the upper part of the middle connecting disc, a guide post is arranged in the middle of the connecting sleeve,

the top cover comprises a plug connector matched with the connecting sleeve and a guide groove matched with the guide post, when the top cover is assembled with the bracket, the plug connector is arranged in the connecting sleeve, the guide groove is sleeved on the guide post,

the jacking spring is sleeved on the guide rib, and the upper end and the lower end of the jacking spring are limited by the middle connecting disc and the elastic sheet respectively;

the adjusting spring is sleeved outside the guide groove, and the upper end and the lower end of the adjusting spring are limited by the top cover and the middle connecting disc respectively.

Furthermore, the connecting sleeve and the plug connector are square, and are not easy to rotate in the using process.

Furthermore, the force value of the adjusting spring is larger than that of the jacking spring so as to ensure that the sealing ring is completely contacted and sealed with the sealing surface, and in addition, when the installation object has certain deviation in the pressing-in direction, the adjusting spring can compensate the uncertain gaps so as to ensure that the sealing ring is contacted with the sealing surface and seal.

Furthermore, the number of the guide ribs is 3-5, the guide ribs have certain elasticity, the lower ends of the guide ribs are provided with protruding structures, and the outer sides of the guide ribs are further provided with limiting parts.

During assembly, the elastic sheet is pressed into the shell to the position of the limiting step, the elastic sheet and the shell are in interference fit, the valve body is inserted into the elastic sheet along the flow channel, the lower end of the jacking spring is jacked on the elastic sheet, the spring starts to be compressed when an installation object is pressed down to contact the valve body, and the jacking spring and the adjusting spring are completely compressed when the installation object reaches the designed position; when the mounting is lifted, the spring starts to release, the jacking spring jacks up the valve body, so that the sealing area is opened, and pressure (gas or liquid and the like) can be released through the outlet.

The utility model has the advantages of it is following:

1. according to the design of the prior art, a bayonet below a valve body is often directly connected with a shell, so that the valve body is limited from falling off, but under some special conditions, due to space limitation, a mold or a die cannot be directly formed, a structure matched with the valve body on the shell cannot be formed, and if machining is used, the cost is high; the utility model provides a shell fragment structure not only does not receive the restriction in space, need not machine tooling moreover, has saved the cost greatly, uses the shell fragment directly to impress the casing, can install the valve body to spacing step department.

2. Generally, in the traditional design, design often directly according to theoretical size during the design, sealing washer and sealed face are the laminating promptly when the installation thing is pressed theoretical position, but in the actual conditions, often not so, and firstly, the direction of height itself is had the tolerance when installation thing production, and secondly, the position of valve body also receives the influence of production and assembly. Therefore, the position of the abutting surface of the final installation object and the valve body is different from the theoretical position. If the spring is not adjusted, the pressing position is too large, and the valve body can be damaged; if the press-in position is too small, the seal ring and the seal surface cannot be attached to each other and cannot be sealed. Therefore, this application increases the adjustment spring, and the power value of adjustment spring is greater than following jack-up spring under the compression state all the time. Therefore, if the pressing position is too deep, the adjusting spring can continue to be compressed, and the valve body cannot be damaged due to excessive force generated between the valve body and the shell; if the pressing-in position is too shallow, the valve body still can be in the theoretical position because the force value of the adjusting spring is always larger than that of the jacking spring, and the contact between the sealing ring and the sealing surface is ensured.

3. And a limiting step is added, so that the position can be limited when the elastic sheet is pressed downwards.

4. The top cover and the support are designed in a square shape, rotation is not easy to occur in the using process, and the top cover and the support are matched with each other through the guide posts and the guide grooves, so that the use is more stable.

5. The support below sets up the direction muscle, is difficult to take place the jamming in use and installation.

6. The installation is simple, and is with low costs, quick detachable.

Drawings

FIG. 1 is a schematic cross-sectional view of the device of the present invention;

fig. 2 is a schematic structural view of the housing of the present invention;

fig. 3 is a schematic diagram of the explosion structure of the device of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Examples

A liquid filter structure with a valve, as shown in figure 1, comprises a housing 100 on a liquid filter (such as an automobile oil filter), a spring plate 200 and a valve body 300, wherein the housing 100 is provided with a containing cavity 110, the upper end of the containing cavity 110 is an inlet 120, the lower end of the containing cavity 110 is provided with an outlet 130, a limiting step 140 is arranged in the containing cavity 110, the spring plate 200 is arranged at the limiting step 140 and limited, the lower end of the valve body 300 is limited by the spring plate 200, the upper end of the valve body 300 is pressed by a mounting object 400, and the valve body 300 and the containing cavity 110 are sealed,

as shown in fig. 2 and 3, the receiving cavity 110 is provided with a sealing surface 150 at the inlet 120, the valve body 300 is provided with a sealing ring 350, and when the valve body 300 is installed in place, the sealing ring 350 is located at the sealing surface 150 to seal the valve body 300 and the housing 100, as shown in fig. 1, the installation in place is a normal working state. The accommodating cavity 110 is a stepped cylinder with a thick upper part and a thin lower part, and the embodiment is roughly divided into three sections, and each section is provided with transition connection. The inlet 120 at the upper end of the accommodating cavity 110 is provided with a guide fillet 160 for convenient assembly and installation, the bottom of the accommodating cavity 110 is communicated with the outside through the outlet 130, the outlet 130 is obliquely arranged, the upper end is communicated with the bottom of the accommodating cavity 110, the lower end is communicated with the outside, and the limiting step 140 is arranged at the upper part of the outlet 130 for facilitating the discharge of high-pressure liquid or gas.

As shown in fig. 3, the valve body 300 includes a jacking spring 330, a support 310, an adjusting spring 340 and a top cover 320, the support 310 includes a middle connecting plate 311, a guiding rib 312 connected to the lower part of the middle connecting plate 311 and a connecting sleeve 313 on the upper part, a guiding post 314 is arranged in the middle of the connecting sleeve 313, the top cover 320 includes a plug connector 321 matched with the connecting sleeve 313 and a guiding groove 322 matched with the guiding post 314, when the top cover 320 is assembled with the support 310, the plug connector 321 is installed in the connecting sleeve 313, the guiding groove 322 is sleeved on the guiding post 314, the jacking spring 330 is sleeved on the guiding rib 312, and the upper end and the lower end of the jacking spring are respectively limited; the adjusting spring 340 is sleeved outside the guide groove 322, the upper end and the lower end of the adjusting spring are limited by the top cover 320 and the middle connecting disc 311 respectively, and the connecting sleeve 313 and the plug connector 321 are both square, so that the adjusting spring is not easy to rotate in the using process.

The force value of the adjusting spring 340 is larger than that of the jacking spring 330 to ensure that the sealing ring is completely contacted and sealed with the sealing surface, and in addition, when the installation object has certain deviation in the pressing-in direction, the adjusting spring can compensate the uncertain gaps so as to ensure that the sealing ring is contacted with the sealing surface to ensure sealing. The direction muscle 312 is equipped with 4, and the direction muscle has certain elasticity, and the lower extreme is equipped with protruding structure, and the round hole of shell fragment 200 is passed to direction muscle 312, and the lower extreme realizes spacingly, and the direction muscle 312 outside still is equipped with locating part 315.

During assembly, the elastic sheet is pressed into the shell to the position of the limiting step, the elastic sheet and the shell are in interference fit, the valve body is inserted into the elastic sheet along the flow channel, the lower end of the jacking spring is jacked on the elastic sheet, the spring starts to be compressed when an installation object is pressed down to contact the valve body, and the jacking spring and the adjusting spring are completely compressed when the installation object reaches the designed position; when the mounting is lifted, the spring starts to be released, the jacking spring jacks up the valve body, so that the sealing area is opened, and pressure gas, liquid or the like can be released through the outlet.

The elastic sheet in the utility model is not limited by space, and does not need machining, thus greatly saving cost, and the valve body can be installed by directly pressing the elastic sheet into the shell body to the position of the limit step; in addition, this application increases the adjustment spring, and the power value of adjustment spring is greater than following jack-up spring under the compression state all the time. If the pressing position is too deep, the adjusting spring can continue to be compressed, and the valve body cannot be damaged due to excessive force generated between the valve body and the shell; if the pressing-in position is too shallow, the valve body still can be in the theoretical position because the force value of the adjusting spring is always larger than that of the jacking spring, and the contact between the sealing ring and the sealing surface is ensured.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. A liquid filter structure with a valve is characterized by comprising a shell (100), a spring plate (200) and a valve body (300),

the shell (100) is provided with an accommodating cavity (110), the upper end of the accommodating cavity (110) is provided with an inlet (120), the lower end is provided with an outlet (130),

a limit step (140) is arranged in the accommodating cavity (110), the elastic sheet (200) is arranged at the limit step (140),

the lower end of the valve body (300) is limited by the elastic sheet (200), and the upper end of the valve body (300) is pressed by an installation object (400), so that the valve body (300) and the accommodating cavity (110) are sealed.

2. A valved liquid filter structure according to claim 1, wherein the receiving chamber (110) is provided with a sealing surface (150) at the inlet (120), the valve body (300) is provided with a sealing ring (350), and when the valve body (300) is in place, the sealing ring (350) is located at the sealing surface (150) to seal the valve body (300) with the housing (100).

3. A valved liquid filter structure according to claim 2, wherein said receiving chamber (110) is in the form of a stepped cylinder having a large upper portion and a small lower portion.

4. A valved liquid filter structure according to claim 3, wherein the inlet (120) at the upper end of the receiving chamber (110) is provided with a guide radius (160).

5. A valved liquid filter structure according to claim 3, wherein the bottom of the receiving chamber (110) is in communication with the outside through the outlet (130), the outlet (130) is obliquely disposed, the upper end is in communication with the bottom of the receiving chamber (110), and the lower end is open to the outside.

6. A valved liquid filter structure according to claim 3, wherein said limit step (140) is provided at an upper portion of said outlet (130).

7. A valved liquid filter structure according to any one of claims 1-6, wherein the valve body (300) includes a jacking spring (330), a bracket (310), an adjustment spring (340) and a cap (320),

the bracket (310) comprises a middle connecting disc (311), a guide rib (312) connected to the lower part of the middle connecting disc (311) and a connecting sleeve (313) at the upper part, a guide post (314) is arranged in the middle of the connecting sleeve (313),

the top cover (320) comprises a plug connector (321) matched with the connecting sleeve (313) and a guide groove (322) matched with the guide post (314), when the top cover (320) is assembled with the support (310), the plug connector (321) is installed in the connecting sleeve (313), the guide groove (322) is sleeved on the guide post (314),

the jacking spring (330) is sleeved on the guide rib (312), and the upper end and the lower end of the jacking spring are limited by the middle connecting disc (311) and the elastic sheet (200) respectively;

the adjusting spring (340) is sleeved outside the guide groove (322), and the upper end and the lower end of the adjusting spring are limited by the top cover (320) and the middle connecting disc (311) respectively.

8. A valved liquid filter structure according to claim 7 wherein the connecting sleeve (313) and connector (321) are square.

9. A liquid filter construction with a valve according to claim 7, characterised in that the force value of the adjusting spring (340) is larger than the jacking spring (330).

10. The liquid filter structure with a valve as claimed in claim 7, wherein the number of the guide ribs (312) is 3-5, and a stopper (315) is further provided outside the guide ribs (312).