CN210890249U

CN210890249U - One-way exhaust valve

Info

Publication number: CN210890249U
Application number: CN201921443339.3U
Authority: CN
Inventors: 陈坤; 罗相大; 李伟强; 谢荣荣; 余阳
Original assignee: Beijing Pingenkang Automobile Technology Co ltd
Current assignee: Beijing Pingenkang Automobile Technology Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-06-30
Anticipated expiration: 2029-09-02

Abstract

The utility model discloses a one-way exhaust valve, which comprises a valve body, a sealing ring, a valve core, a spring and a valve cover, wherein an assembly boss is arranged on the outer wall of the valve body, exhaust holes are circumferentially distributed on the assembly boss, and the valve cover is covered on the top of the valve body and is riveted and fixed with the assembly boss; an annular cavity is formed between the spring guide seat in the valve cover and the inner cavity wall, a plurality of first cavity ribs which are radially arranged are circumferentially distributed at the cavity top of the annular cavity, and a first exhaust channel is formed between every two adjacent first cavity ribs; a plurality of second cavity ribs which are axially arranged are circumferentially distributed on the inner wall of the cavity of the valve cover, and a second exhaust channel is formed between every two adjacent second cavity ribs; the second exhaust channel is communicated with the exhaust hole; the one-way exhaust valve has large sectional area of the exhaust channel, and can quickly exhaust gas; the valve cover of the valve body is stably connected and is not easy to loosen, and the spring can stably contract according to the specified pressure, so that the exhaust valve can be accurately opened; and the working stability of the exhaust valve can be ensured.

Description

One-way exhaust valve

Technical Field

The utility model relates to a vehicular discharge valve technical field especially relates to an one-way discharge valve.

Background

Under the condition that the vehicle is accelerated suddenly in the driving process, a large amount of gas is generated in the transfer case, the pressure in the cavity is prevented from being overhigh, the pressure in the cavity is reduced, a check valve is required to be installed to complete the pressure relief function, and the check valve is generally installed at the transfer case and the front/rear bridge position on the automobile and is installed at the highest point of the assembly.

The structure of the existing one-way valve, namely the working principle, is shown in fig. 1, the arrow in the figure indicates the direction of air flow, when pressure is generated in the transfer case, the air flow enters the valve body through the valve exhaust cavity, when the pressure reaches the designed range, the spring in the valve begins to compress, the sealing pad rises along with the direction of the air flow, the air flow enters the cavity of the valve body, at the moment, the valve is opened to be in a working state, and the air flow is exhausted to the outer wall surface through the hole on the cavity wall and then is exhausted to the atmosphere through the.

The valve cover of the existing one-way valve is finished by adopting a metal part machining process, the size design requirement of an air guide structure cannot be met, and the valve body is attached to the valve shell to form a sealing state. The sectional area of an exhaust hole formed in the inner wall of the valve body is small, so that gas in the cavity of the valve body cannot be exhausted quickly, the valve cover and the valve body are connected by threads, the valve cover and the valve body are easy to loosen in use, when the air flow reaches the designed pressure, the compression force value of the spring begins to change, the rubber pad rises along with the air flow direction, the air flow enters the cavity of the valve body, the valve works in an abnormal designed air pressure range, and the designed structure of the valve fails; the air guide hole is low in position, rainwater or foreign matters easily enter the valve body cavity in the using process of a vehicle to influence the normal work of the valve, so that the valve fails in function.

Disclosure of Invention

The utility model aims at providing a one-way exhaust valve to solve the problems existing in the prior art, the sectional area of an exhaust channel is large, and gas can be rapidly exhausted; the valve cover of the valve body is stably connected and is not easy to loosen, and the spring can stably contract according to the specified pressure, so that the exhaust valve can be accurately opened; and the working stability of the exhaust valve can be ensured.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a one-way exhaust valve, which comprises a valve body, a sealing ring, a valve core, a spring and a valve cover, wherein an assembly boss is arranged on the outer wall of the valve body, exhaust holes are circumferentially distributed on the assembly boss, the valve cover is arranged at the top of the valve body, and the bottom opening of the valve cover is fixedly connected with the assembly boss;

the valve body is internally provided with a first exhaust cavity and a second exhaust cavity which are communicated with each other, the first exhaust cavity is arranged at the bottom and is communicated with an air inlet channel in the automobile transfer case assembly, and the inner diameter of the second exhaust cavity is larger than that of the first exhaust cavity; the valve core is arranged in the second exhaust cavity, and the outer diameter of the valve core is smaller than the inner diameter of the second exhaust cavity; the sealing ring is arranged at the cavity bottom of the second exhaust cavity;

a spring guide seat is arranged at the top of the cavity of the inner cavity of the valve cover, the spring guide seat extends into the second exhaust cavity and is opposite to the valve core, one end of the spring is sleeved on the spring guide seat and is abutted against the top of the cavity of the valve cover, and the other end of the spring is sleeved on the valve core and is abutted against a spring limiting seat arranged on the valve core; the spring is pre-tightened between the valve cover and the valve core, so that the valve core is contacted with the sealing ring to further seal the second exhaust cavity;

an annular cavity is formed between the spring guide seat and the inner cavity wall of the valve cover, a plurality of first cavity dividing ribs which are radially arranged are circumferentially distributed at the cavity top of the annular cavity, the first cavity dividing ribs are abutted against the top end face of the valve body, and a first exhaust channel is formed between every two adjacent first cavity dividing ribs; a plurality of second cavity dividing ribs which are axially arranged are circumferentially distributed on the inner wall of the cavity of the valve cover, the second cavity dividing ribs are arranged in contact with the outer wall of the valve body, and a second exhaust channel is formed between every two adjacent second cavity dividing ribs; the second exhaust passage is communicated with the exhaust hole.

Preferably, the valve body is assembled on a transfer case assembly of an automobile, and the outer wall of the bottom of the valve body is provided with threads which are in threaded connection with mounting threaded holes arranged on a shell of the transfer case assembly.

Preferably, the number of the first cavity dividing ribs is 4, and the 4 first cavity dividing ribs are uniformly distributed in the circumferential direction; the second divides the chamber muscle to be provided with 4, 4 the second divides the chamber muscle also circumference equipartition, first minute chamber muscle with second minute chamber muscle staggered arrangement, and adjacent first minute chamber muscle with contained angle between the second minute chamber muscle is 45.

Preferably, the thickness of first chamber muscle is 0.3mm, the thickness of second chamber muscle is 0.2mm, just the second chamber muscle with the side of valve body lateral wall contact is the arcwall face.

Preferably, the outer side of the bottom end surface of the spring guide seat opposite to the valve core is chamfered to form an annular inclined surface structure.

Preferably, the height of the spring guide is 1/2 times the length of the spring.

Preferably, an annular groove is formed in the bottom end face of the assembling boss, and the exhaust hole is opened from the annular groove to the top end face of the assembling boss.

Preferably, the exhaust hole is provided with 4, 4 the exhaust hole circumference equipartition.

Preferably, the bottom opening part of the valve cover is an outward-expanding horn-shaped opening, the outer wall of the horn-shaped opening is riveted and fixed with the assembling boss, the inner wall of the horn-shaped opening forms an annular guide inclined plane, the guide inclined plane and the outer wall of the valve body form a third exhaust channel with a triangular cross section, and the third exhaust channel is opposite to and communicated with the exhaust hole.

Preferably, the valve cover is an injection molding part, and the valve cover and the spring guide seat, the first cavity rib and the second cavity rib are integrally formed in an injection molding mode.

The utility model discloses following beneficial technological effect has been gained for prior art:

1. the one-way exhaust valve provided by the utility model has the advantages that the valve cover adopts injection molding parts, so that the whole weight is reduced; the rib is added to the inner top surface of the valve cover, so that a first exhaust channel is formed when the top end of the valve body is assembled with the valve cover, the rib positions are added to the periphery of the inner wall of the valve cover, the outer wall surface of the valve body is attached to form a second exhaust channel, the sectional area of air guide is increased through the two exhaust channels, air flow in the cavity of the valve body can be rapidly discharged to the outer wall of the valve body, and the air flow is discharged to the atmosphere through the exhaust.

2. The utility model provides a one-way exhaust valve compares with the current structure of opening the exhaust hole on the lateral wall of valve body, and the passageway that communicates with the valve body inner chamber is higher at the topmost of valve gap, and rainwater or foreign matter are difficult for getting into the inner chamber of valve body, guarantee the stability of discharge valve work.

3. The utility model provides a one-way exhaust valve, valve body and valve gap riveting are in the same place, and the equipment is firm, and the air current influences and can normally open when reacing required pressure, and is accurate through the pressure value.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a check valve in the prior art;

FIG. 2 is a schematic view of an explosion of the one-way exhaust valve of the present invention;

FIG. 3 is an assembly view of the one-way exhaust valve of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

fig. 5 is a bottom view of the middle valve cover of the present invention;

FIG. 6 is a schematic structural view of the open state of the one-way exhaust valve of the present invention;

FIG. 7 is an assembly view of the one-way exhaust valve and transfer case assembly of the present invention;

FIG. 8 is an assembly view of the housing of the one-way exhaust valve and transfer case assembly of the present invention;

in the figure: 1-transfer case assembly, 2-shell, 3-air inlet channel, 4-mounting threaded hole, 5-one-way exhaust valve, 501-valve body, 502-sealing ring, 503-valve core, 504-spring, 505-valve cover, 506-spring guide seat, 507-first cavity rib, 508-second cavity rib, 509-trumpet-shaped opening, 510-spring limit seat, 511-exhaust hole, 512-annular groove, 513-assembly boss, 514-first exhaust cavity, 515-second exhaust cavity, 516-first exhaust channel, 517-second exhaust channel and 518-third exhaust channel.

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.

The utility model aims at providing an one-way discharge valve to solve the problem that prior art exists.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The utility model provides a one-way exhaust valve, as shown in fig. 2-5, including valve body 501, sealing washer 502, case 503, spring 504 and valve cover 505, be provided with an assembly boss 513 on the outer wall of valve body 501, the last circumference of assembly boss 513 distributes there are exhaust holes 511, valve cover 505 covers the top of locating valve body 501, the bottom opening part of valve cover 505 and assembly boss 513 riveting fixed;

a first exhaust cavity 514 and a second exhaust cavity 515 which are communicated with each other are arranged inside the valve body 501, the first exhaust cavity 514 is arranged at the bottom and is communicated with an air inlet channel 3 in a transfer case assembly 1 of an automobile, and the inner diameter of the second exhaust cavity 515 is larger than that of the first exhaust cavity 514; the valve core 503 is arranged in the second exhaust cavity 515, and the outer diameter of the valve core 503 is smaller than the inner diameter of the second exhaust cavity 515 to ensure that air flow can pass between the valve core 503 and the second exhaust cavity 515; the seal ring 502 is disposed at the bottom of the second exhaust chamber 515;

a spring guide seat 506 is arranged at the top of the cavity of the inner cavity of the valve cover 505, the spring guide seat 506 extends into the second exhaust cavity 515 to be opposite to the valve core 503, one end of the spring 504 is sleeved on the spring guide seat 506 and is abutted against the top of the cavity of the valve cover 505, and the other end of the spring 504 is sleeved on the valve core 503 and is abutted against a spring limiting seat 510 arranged on the valve core 503; the spring 504 is preloaded between the valve cover 505 and the valve core 503, so that the valve core 503 is contacted with the sealing ring 502 to seal the second exhaust cavity 515;

an annular cavity is formed between the spring guide seat 506 and the inner cavity wall of the valve cover 505, a plurality of first cavity dividing ribs 507 which are radially arranged are circumferentially distributed at the cavity top of the annular cavity, the first cavity dividing ribs 507 are abutted against the top end surface of the valve body 501, and a first exhaust channel 516 is formed between two adjacent first cavity dividing ribs 507; a plurality of second cavity dividing ribs 508 which are axially arranged are circumferentially distributed on the inner wall of the cavity of the valve cover 505, the second cavity dividing ribs 508 are arranged in contact with the outer wall of the valve body 501, and a second exhaust channel 517 is formed between every two adjacent second cavity dividing ribs 508; the second exhaust passage 517 communicates with the exhaust hole 511.

Specifically, in the utility model, the first cavity-dividing ribs 507 are provided with 4, and the 4 first cavity-dividing ribs 507 are circumferentially and uniformly distributed; the number of the second cavity dividing ribs 508 is 4, the 4 second cavity dividing ribs 508 are uniformly distributed in the circumferential direction, the first cavity dividing ribs 507 and the second cavity dividing ribs 508 are arranged in a staggered mode, and an included angle between the adjacent first cavity dividing ribs 507 and the adjacent second cavity dividing ribs 508 is 45 degrees, so that the first exhaust channel 516 and the second exhaust channel 517 are staggered by 45 degrees, and further the uniformity of ventilation pressure is guaranteed; wherein the thickness of the first cavity-dividing rib 507 is 0.3 mm; the thickness of second minute chamber muscle 508 is 0.2mm, and in order to cooperate with the outer wall of columniform valve body 501, the side that second minute chamber muscle 508 and valve body 501 lateral wall contact is the arcwall face.

The outer side of the bottom end surface of the spring guide seat 506 opposite to the valve core 503 is chamfered to form an annular inclined surface structure, so that the resistance of air flow is reduced; the height of the spring guide 506 is 1/2 the length of the spring 504.

An annular groove 512 is formed in the bottom end face of the assembling boss 513, and the exhaust hole 511 is formed by the annular groove 512 to the top end face of the assembling boss 513; the exhaust holes 511 are provided with 4, and 4 exhaust holes 511 are circumferentially and uniformly distributed.

The bottom opening of the valve cover 505 is an outward flared opening 509, the outer wall of the flared opening 509 is riveted and fixed with the assembling boss 513, the inner wall of the flared opening 509 forms an annular guide inclined surface, the guide inclined surface and the outer wall of the valve body 501 form a third exhaust channel 518 with a triangular cross section, the third exhaust channel 518 is opposite to and communicated with the exhaust hole 511, and the triangular third exhaust channel 518 can increase the exhaust area of gas.

In the utility model, the valve cover 505 is an injection molding piece, which can reduce the whole weight of the check valve; the valve cover 505 is integrally injection-molded with the spring guide seat 506, the first cavity dividing rib 507 and the second cavity dividing rib 508.

As shown in fig. 7-8, the valve body 501 is assembled on the transfer case assembly 1 of the automobile, and the outer wall of the bottom of the valve body 501 is provided with threads which are in threaded connection with the mounting threaded holes 4 arranged on the shell 2 of the transfer case assembly 1.

The utility model provides an one-way discharge valve's theory of operation as follows: when the pressure in the transfer case is lower, the valve core 503 is under the action of the force of the spring 504, the valve core 503 keeps the original position, the valve core 503 and the sealing ring 502 form a sealing closed state, and at the moment, the one-way valve is in a closed state. As shown in FIG. 6, when the gas pressure in the transfer case is greater than the elastic force of the spring 504, the valve core 503 pushes the spring 504 to compress and rise, the valve core 503 and the sealing ring 502 generate a gap, the second exhaust cavity 515 is opened for ventilation, and the gas in the transfer case enters the second exhaust cavity 515 through the first exhaust cavity 514, then passes through the first exhaust channel 516 and the second exhaust channel 517 formed by the first cavity dividing rib 507 and the second cavity dividing rib 508 respectively and then is exhausted through the exhaust hole 511 on the assembling boss 513.

The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete examples, and the explanation of the above examples is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present description should not be construed as a limitation of the present invention.

Claims

1. A one-way exhaust valve is characterized in that: the valve comprises a valve body, a sealing ring, a valve core, a spring and a valve cover, wherein an assembly boss is arranged on the outer wall of the valve body, exhaust holes are circumferentially distributed on the assembly boss, the valve cover is covered on the top of the valve body, and an opening at the bottom of the valve cover is fixedly connected with the assembly boss;

2. The one-way exhaust valve according to claim 1, wherein: the valve body is assembled on a transfer case assembly of an automobile, and the outer wall of the bottom of the valve body is provided with threads which are in threaded connection with threaded holes formed in a shell of the transfer case assembly.

3. The one-way exhaust valve according to claim 1, wherein: the number of the first cavity dividing ribs is 4, and the 4 first cavity dividing ribs are uniformly distributed in the circumferential direction; the second divides the chamber muscle to be provided with 4, 4 the second divides the chamber muscle also circumference equipartition, first minute chamber muscle with second minute chamber muscle staggered arrangement, and adjacent first minute chamber muscle with contained angle between the second minute chamber muscle is 45.

4. A one-way exhaust valve according to claim 3, wherein: the thickness of first chamber muscle of dividing is 0.3mm, the thickness of second chamber muscle of dividing is 0.2mm, just the second divide the chamber muscle with the side of valve body lateral wall contact is the arcwall face.

5. The one-way exhaust valve according to claim 1, wherein: and the outer side of the bottom end surface of the spring guide seat opposite to the valve core is chamfered to form an annular inclined surface structure.

6. The one-way exhaust valve according to claim 1, wherein: the height of the spring guide seat is 1/2 the length of the spring.

7. The one-way exhaust valve according to claim 1, wherein: an annular groove is formed in the bottom end face of the assembling boss, and the exhaust hole is formed in the top end face of the assembling boss from the annular groove.

8. The one-way exhaust valve according to claim 7, wherein: the exhaust hole is provided with 4, 4 exhaust hole circumference equipartition.

9. The one-way exhaust valve according to claim 1, wherein: the bottom opening part of valve gap is the flared opening that expands outward, flared opening's outer wall with assembly boss riveting fixed, flared opening's inner wall forms annular direction inclined plane, the direction inclined plane with the outer wall of valve body forms the third exhaust passage that the cross-section is triangle-shaped, third exhaust passage with the exhaust hole is relative and communicate with each other.

10. The one-way exhaust valve according to claim 1, wherein: the valve gap is an injection molding piece, and the valve gap and the spring guide seat, the first sub-cavity rib and the second sub-cavity rib are integrally formed in an injection molding mode.