CN112923112A

CN112923112A - Valve body with ventilative explosion-proof trinity function of pressure release

Info

Publication number: CN112923112A
Application number: CN202110342164.2A
Authority: CN
Inventors: 许建民; 张锡诚
Original assignee: Shenzhen Ribo Electronic Technology Co ltd; Tianjin Rijin Technology Co ltd
Current assignee: Shenzhen Ribo Electronic Technology Co ltd; Tianjin Rijin Technology Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-06-08

Abstract

The invention provides a valve body with three-in-one functions of ventilation, pressure relief and explosion prevention, which comprises a shell, a cover body and a valve core, wherein the cover body is detachably connected with the upper end of the shell, a circular shearing groove is formed in a baffle, a horizontally arranged baffle is arranged in the middle of the shell, a pressure relief spring is sleeved on the valve core, and two ends of the pressure relief spring are respectively abutted against the baffle and a flange sliding block. When the internal air pressure of the valve body is small, gas is directly discharged from the waterproof breathable film, when the instantaneous air pressure is large, the gas pushes the valve core to slide outwards to extrude the pressure relief spring, the kinetic energy of the air flow is converted into the elastic potential energy of the pressure relief spring, so that the effect of buffering the air flow is achieved, the rapid pressure relief is achieved, when the instantaneous air pressure is too large, the air flow directly impacts the baffle plate through the air holes in the flange sliding block while impacting the valve core, the baffle plate is broken under the action of the shearing groove, the passing area of the gas is increased, and the cover body can prevent the valve core or the baffle plate from flying out to achieve the explosion-proof effect.

Description

Valve body with ventilative explosion-proof trinity function of pressure release

Technical Field

The invention belongs to the technical field of battery explosion prevention, and particularly relates to a valve body with three functions of ventilation, pressure relief and explosion prevention.

Background

When the battery is in short circuit or is impacted, a large amount of gas can be generated in the battery, so that the gas in the battery can be discharged in time to prevent the battery from bursting, and an explosion-proof valve for communicating the inside and the outside of the battery shell is arranged on the shell of the battery. The explosion-proof valve should have the conventional explosion-proof function of breathing freely, emergent pressure release and extreme environment under, although there are various explosion-proof equipment at new energy automobile battery explosion-proof safety problem at present, but more single, ordinary valve body range of application is single, it is also unreasonable to bear the pressure scope, can't be suitable for the power battery of a large amount of different grade types, different structure, different models, also can't guarantee the reliability of real machine operation under the different season environment, therefore how to improve the suitability and the stability of current valve body be the technological problem that this field is waited for urgently to solve.

Disclosure of Invention

In view of this, the present invention is directed to a valve body with three functions of ventilation, pressure relief, and explosion prevention, so as to increase the applicability and stability of an explosion-proof valve.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a valve body with three-in-one functions of ventilation, pressure relief and explosion prevention, which comprises a shell, a cover body and a valve core, wherein the cover body is detachably connected with the upper end of the shell,

the improved gas leakage protection valve is characterized in that a baffle plate is horizontally arranged in the middle of the shell, a guide hole is formed in the middle of the baffle plate, a circular shear groove is formed in the baffle plate, the valve element penetrates through the guide hole and slides up and down in the shell in a sealing mode along the guide hole, a cover plate is detachably connected to the upper end of the valve element, a waterproof breathable film is arranged between the cover plate and the valve element, a flange sliding block is detachably connected to the lower end of the valve element, a pressure relief spring is sleeved on the valve element, two ends of the pressure relief spring respectively abut against the baffle plate and the flange sliding block, a gas channel is formed in the middle of the valve element and the flange sliding block, vent holes communicated with the.

Preferably, the lower end of the valve core is provided with an inserting part, the flange sliding block is provided with a bearing part corresponding to the inserting part, and the inserting part and the bearing part are matched to adjust the length of the valve core inserted into the flange sliding block.

Preferably, the inserting part and the bearing part are provided with corresponding threads.

Preferably, the upper end of the valve core is provided with a limiting flange, and the limiting flange is detachably connected with the cover plate.

Preferably, the limiting flange is provided with a connecting column, the cover plate is provided with a connecting hole corresponding to the connecting column, and the connecting column is connected with the connecting hole in an interference fit manner.

Preferably, one side of the limiting flange, which is close to the baffle, is embedded with a rubber ring.

Preferably, the side wall of the upper end of the shell is provided with a clamping groove, and the inner wall of the cover body is provided with a clamping jaw corresponding to the clamping groove.

Preferably, the upper section of the shell is provided with a sealing boss, and a rubber ring is embedded on the lower surface of the sealing boss.

Preferably, the side wall of the shell below the sealing boss is provided with an external thread.

Preferably, the waterproof breathable film is made of polytetrafluoroethylene materials.

Compared with the prior art, the valve body with the functions of ventilation, pressure relief and explosion prevention has the following advantages:

when the internal air pressure of the valve body is small, gas is directly discharged from the waterproof breathable film, when the instantaneous air pressure is large, the gas pushes the valve core to slide outwards to extrude the pressure relief spring, the kinetic energy of the air flow is converted into the elastic potential energy of the pressure relief spring, so that the effect of buffering the air flow is achieved, the rapid pressure relief is achieved, when the instantaneous air pressure is too large, the air flow directly impacts the baffle plate through the air holes in the flange sliding block while impacting the valve core, the baffle plate is broken under the action of the shearing groove, the passing area of the gas is increased, and the cover body can prevent the valve core or the baffle plate from flying out to achieve the explosion-proof effect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a valve body according to an embodiment of the present invention, partially in cross section;

fig. 2 is a schematic cross-sectional structural view of a valve body according to an embodiment of the present invention.

Description of reference numerals:

1. a housing; 2. a cover body; 3. a valve core; 4. a baffle plate; 5. shearing a groove; 6. a cover plate; 7. a waterproof breathable film; 8. a flange slider; 9. a pressure relief spring; 10. a gas channel; 11. air holes are formed; 12. a limiting flange; 13. a rubber ring.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

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

A valve body with three-in-one functions of ventilation, pressure relief and explosion prevention comprises a shell body 1, a cover body 2 and a valve core 3, wherein the cover body 2 is detachably connected with the upper end of the shell body 1,

the middle part of the shell 1 is provided with a baffle 4 which is horizontally arranged, the middle part of the baffle 4 is provided with a guide hole, the baffle 4 is provided with a circular shearing groove 5, the valve core 3 passes through the guide hole and slides up and down in the shell 1 in a sealing way along the guide hole, the upper end of the valve core 3 is detachably connected with a cover plate 6, a waterproof breathable film 7 is arranged between the cover plate 6 and the valve core 3, the waterproof breathable film 7 is made of a high polymer material which has strong acid-base corrosion resistance and is waterproof and breathable, in the embodiment, the waterproof breathable film 7 is made of a polytetrafluoroethylene material, the lower end of the valve core 3 is detachably connected with a flange slider 8, the valve core 3 is sleeved with a pressure relief spring 9, two ends of the pressure relief spring 9 are respectively abutted against the baffle 4 and the flange slider 8, the upper end of the valve core 3 is always abutted against the upper end of, the cover body 2 and the cover plate 6 are both provided with vent holes 11 communicated with a gas channel 10, the flange slide block 8 is provided with vent holes 11 communicated with a gap between the shell 1 and the valve core 3, when the gas flow in the valve body is small and the air pressure is low, the gas passes through the gas channel 10 and is discharged outwards through the waterproof breathable film 7, when the gas flow in the valve body is high and the air pressure is high, the gas impacts the waterproof breathable film 7 to drive the valve core 3 to slide outwards and extrude the pressure relief spring 9, so that the impact force of the gas flow is converted into the elastic potential energy of the pressure relief spring 9 to play a role of buffering, thereby realizing the pressure relief, when the gas flow in the valve body is over high, the gas flow can directly impact the baffle plate 4 through the vent holes 11 on the flange slide block 8, the baffle plate 4 is instantly broken at the shearing groove 5 to generate cracks, the flow area of the gas is increased, and, the high-pressure airflow is rapidly sprayed out to reduce the internal pressure of the protected device, the cover body 2 can play a role in separating the cover plate 6 and the baffle plate 4, the human body is prevented from being injured under the impact of the airflow, the explosion-proof effect is realized, and the ventilation volume of the waterproof breathable film 7 is determined according to the self volume of the protected explosion-proof device or the chemical characteristics of internal materials.

Preferably, in this embodiment, the lower end of the valve element 3 is provided with an insertion portion, the flange slider 8 is provided with a receiving portion corresponding to the insertion portion, the insertion portion and the receiving portion are provided with corresponding threads, and the insertion portion and the receiving portion are matched to adjust the length of the valve element 3 inserted into the flange slider 8 under the action of the threads through mutual rotation, that is, the tightness of the pressure relief spring 9 is changed, so as to adjust the application range of the maximum pressure.

Preferably, the upper end of the valve core 3 is provided with a limiting flange 12, the limiting flange 12 is detachably connected with the cover plate 6, and the limiting flange 12 is tightly abutted to the upper end of the baffle plate 4 to play a limiting role.

Preferably, the limiting flange 12 is provided with a connecting column, the cover plate 6 is provided with a connecting hole corresponding to the connecting column, and the connecting column is connected with the connecting hole in an interference fit manner.

Preferably, a rubber ring 13 is embedded on one surface of the limiting flange 12 close to the baffle 4, so that the sealing performance between the limiting flange 12 and the baffle 4 is improved, and when the air pressure is small, the air can only pass through the waterproof breathable film 7 to be discharged.

Preferably, the side wall of the upper end of the shell 1 is provided with a clamping groove, and the inner wall of the cover body 2 is provided with a clamping jaw corresponding to the clamping groove.

Preferably, casing 1 upper segment is equipped with sealed boss, rubber circle 13 has been inlayed to sealed boss lower surface, has improved the leakproofness with equipment when the valve body is installed on equipment.

Preferably, the side wall of the shell 1 below the sealing boss is provided with an external thread for installation with equipment.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a valve body with explosion-proof trinity function of ventilative pressure release which characterized in that: comprises a shell, a cover body and a valve core, wherein the cover body is detachably connected with the upper end of the shell,

2. The valve body with the functions of ventilation, pressure relief and explosion prevention as well as three functions of claim 1 is characterized in that: the lower end of the valve core is provided with an inserting part, the flange sliding block is provided with a bearing part corresponding to the inserting part, and the inserting part and the bearing part are matched to adjust the length of the valve core inserted into the flange sliding block.

3. The valve body with the functions of ventilation, pressure relief and explosion prevention as well as three functions of claim 2, is characterized in that: the inserting part and the bearing part are provided with corresponding threads.

4. The valve body with the functions of ventilation, pressure relief and explosion prevention as well as three functions of claim 1 is characterized in that: and a limiting flange is arranged at the upper end of the valve core and is detachably connected with the cover plate.

5. The valve body with the three-in-one functions of ventilation, pressure relief and explosion prevention as claimed in claim 4, is characterized in that: the limiting flange is provided with a connecting column, the cover plate is provided with a connecting hole corresponding to the connecting column, and the connecting column is connected with the connecting hole in an interference fit manner.

6. The valve body with the three-in-one functions of ventilation, pressure relief and explosion prevention as claimed in claim 4, is characterized in that: and a rubber ring is embedded on one surface of the limiting flange close to the baffle.

7. The valve body with the functions of ventilation, pressure relief and explosion prevention as well as three functions of claim 1 is characterized in that: the lateral wall of the upper end of the shell is provided with a clamping groove, and the inner wall of the cover body is provided with a clamping jaw corresponding to the clamping groove.

8. The valve body with the functions of ventilation, pressure relief and explosion prevention as well as three functions of claim 1 is characterized in that: the casing upper segment is equipped with sealed boss, rubber circle has been inlayed to sealed boss lower surface.

9. The valve body with the three-in-one functions of ventilation, pressure relief and explosion prevention as claimed in claim 8, is characterized in that: and the side wall of the shell below the sealing boss is provided with an external thread.

10. The valve body with the functions of ventilation, pressure relief and explosion prevention as well as three functions of claim 1 is characterized in that: the waterproof breathable film is made of polytetrafluoroethylene materials.