CN220102191U - Explosion-proof valve capable of rapidly testing air tightness - Google Patents

Abstract

The utility model relates to the technical field of explosion-proof valves, and provides an explosion-proof valve capable of rapidly testing air tightness, which comprises: the valve body is provided with a valve port; the valve cover is movably arranged on the valve body along the direction approaching or separating from the valve port and is used for opening or closing the valve port; the connecting guide rod penetrates through the valve body and is connected with the valve cover; one end of the elastic piece is connected with the valve body, and the other end of the elastic piece is connected to one end of the connecting guide rod, which is away from the valve cover; the connecting guide rod is far away from the valve body under the action of the elasticity of the elastic piece; at least one of the valve cover and the connecting guide rod is arranged as a magnetic attraction piece and is used for enabling the valve cover to be far away from the valve body through magnetic attraction driving of an external magnetic attraction tool so as to open the valve port. The utility model has the advantages of realizing quick opening of the valve port to meet the test requirement, and not increasing the cost of parts and working procedures.

Description

Explosion-proof valve capable of rapidly testing air tightness

Technical Field

The utility model relates to the technical field of explosion-proof valves, in particular to an explosion-proof valve capable of rapidly testing air tightness.

Background

With the popularization and development of new energy steam technology, battery safety is receiving more and more attention. The battery is filled with a large amount of chemical substances, and mixed gas is generated during charge and discharge. Therefore, the gas in the sealed cavity is gathered and expanded, and if the pressure in the sealed cavity is not released in time, the service life of the battery is directly influenced, and the explosion can occur under more serious conditions. In addition, when the energy equipment with the battery is in the transportation process, high-low altitude pressure difference can be generated under the influence of the environment, negative pressure difference can be generated in the cavity of the equipment, and if the internal and external pressure differences of the sealed cavity are not balanced in time, explosion is easy to cause. The problem of spontaneous combustion and self-explosion of the battery equipment caused by the influence of external air can be solved through the explosion-proof valve.

The battery structure needs to be pressurized and airtight during assembly, and as the battery structure (battery pack) is required to be sealed above IPX7, the requirement on the sealing level of the battery structure is higher, the battery structure needs to be rapidly inflated for detection during testing, and a rapid inflation inlet is usually required to be arranged on the battery pack. The requirement of the quick inflation port is that the quick opening of the battery structure can be realized. The structure of the existing explosion-proof valve can realize slow opening of the valve port, the requirement of quick test cannot be realized, if the quick test is realized, other structural parts are required to be added on the explosion-proof valve, the cost of the parts is increased, and the assembly process is increased, so that the problem of high production cost is caused.

Accordingly, the prior art is still in need of improvement and development.

Disclosure of Invention

The utility model aims to provide an explosion-proof valve capable of rapidly testing air tightness, which has the advantages of realizing rapid opening of a valve port to meet testing requirements, and not increasing part cost and working procedures.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in one aspect, the present utility model provides an explosion-proof valve capable of rapidly testing air tightness, comprising: the valve body is provided with a valve port;

the valve cover is movably arranged on the valve body along the direction approaching or separating from the valve port and is used for opening or closing the valve port;

the connecting guide rod penetrates through the valve body and is connected with the valve cover;

one end of the elastic piece is connected with the valve body, and the other end of the elastic piece is connected to one end of the connecting guide rod, which is away from the valve cover;

the connecting guide rod is far away from the valve body under the action of the elasticity of the elastic piece;

at least one of the valve cover and the connecting guide rod is arranged as a magnetic attraction piece and is used for enabling the valve cover to be far away from the valve body through magnetic attraction driving of an external magnetic attraction tool so as to open the valve port.

In one embodiment, the valve cover and the connecting rod are both provided as magnetic attraction pieces.

In one embodiment, the valve cover comprises a cover disc and a connecting table, wherein the connecting table is fixed at the middle position of the cover disc;

the connecting table is connected to the connecting guide rod.

In one embodiment, the connection guide includes: the main body rod is provided with a screw connection part at one end of the main body rod facing the valve cover and is connected to the connecting table through the screw connection part;

the bottom platform is fixed to be set up in the one end that the main part pole deviates from spiro union portion, and the diameter of bottom platform is greater than the size of main part pole.

In one embodiment, the elastic member comprises a spring, the spring is sleeved on the main body rod, and one end of the spring abuts against the valve body, and the other end of the spring abuts against the bottom table.

In one embodiment, the end of the connecting rod facing away from the valve body is provided with a sheath, the sheath is connected to the valve body, and the elastic member is located in the sheath.

In one embodiment, a first seal is provided on the valve body or valve cover for sealing a gap between the valve cover and the valve port.

In one embodiment, the first seal is integrally disposed with the valve body when the first seal is disposed on the valve body; or alternatively

When the first sealing member is arranged on the valve cover, the first sealing member and the valve cover are integrally arranged.

In one embodiment, the valve body is provided with a second seal on the side facing away from the first seal.

In one embodiment, a second mounting groove is formed in one surface of the valve body, which faces away from the first sealing element, and the second sealing element is formed in the second mounting groove by setting sizing materials, and the second sealing element protrudes out of the notch of the second mounting groove.

The explosion-proof valve capable of rapidly testing the air tightness has the advantages that: through setting up the valve gap in the explosion-proof valve and at least one in the connecting rod as magnetism and inhale the piece, can make the case part of valve gap possess magnetism through magnetism inhale the piece inhale the function to through inhale the frock cooperation with outside magnetism, when the frock is inhaled to the outside magnetism is started, keep away from the valve body through magnetism effect and drive valve gap, thereby realize opening the valve port fast, reach the function of opening the valve fast, can carry out quick inflation in explosion-proof valve department, realize the quick detect function of battery package. When the external magnetic tool is stopped, the connecting guide rod is driven to move by the return elastic force of the elastic piece, so that the valve cover is driven to quickly reset, the valve port is sealed, and the product tightness is ensured. The quick on-off valve has the advantages that the function of the quick on-off valve is realized to meet the test requirement, additional parts are not required to be added on the explosion-proof valve, and further, additional assembly procedures are not required to be added, so that the structure is more optimized, and the production cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a sectional view after explosion of an explosion-proof valve capable of rapidly testing air tightness according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view of a first structure of an explosion-proof valve capable of rapidly testing air tightness according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an explosion-proof valve with a first structure for rapidly testing air tightness according to an embodiment of the present utility model;

fig. 4 is a sectional view of an explosion-proof valve with a second structure for rapidly testing air tightness according to an embodiment of the present utility model.

The reference numerals in the drawings: 100. a valve body; 110. a valve port; 120. a first mounting groove; 121. an inclined surface; 130. a second mounting groove; 140. a retainer ring; 150. a bracket; 200. a valve cover; 210. a third mounting groove; 220. a cover plate; 230. a connection station; 300. a first seal; 310. a clamping bottom; 320. a convex sealing part; 400. a second seal; 500. an elastic return assembly; 510. connecting a guide rod; 511. a main body lever; 512. a bottom stage; 520. an elastic member; 600. and (3) a sheath.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and "second" 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. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.

As shown in fig. 1, this embodiment provides an explosion-proof valve with a novel sealing structure, which is mainly used on a battery structure of a new energy source, and can open the valve under the condition of overlarge internal pressure of the battery structure so as to balance the internal and external pressure differences of a sealing cavity, thereby effectively avoiding the problem of explosion of the battery structure. The explosion-proof valve of this novel seal structure mainly includes: valve body 100, valve cap 200, and resilient return assembly 500. The valve body 100 is mainly used for being fixedly connected to a battery structure, for example, for blocking an air outlet of the battery, and the valve body 100 is provided with a valve port 110, and the valve port 110 is communicated with the air outlet of the battery and can be used for discharging mixed gas in the battery. The valve cover 200 is movably provided on the valve body 100 in a direction approaching or separating from the valve port 110, and serves to open or close the valve port 110. For convenience of structural description, the structure is described taking the case that the valve cover 200 is moved in the up-down direction, wherein the valve port 110 is opened as the valve cover 200 is moved upward, away from the valve port 110 of the valve cover 200; when the valve cap 200 moves downward, it approaches and can close the valve port 110, so that the valve port 110 can be closed. The elastic return assembly 500 connects the valve cap 200 and the valve body 100, and the valve cap 200 closes the valve port 110 by driving of the elastic return assembly 500. After the air pressure in the battery structure reaches a predetermined value, the air pressure in the battery structure can push the valve cover 200 to move upwards, and the upward moving valve cover 200 drives the elastic return assembly 500 to enable the elastic return assembly 500 to have elasticity, and the elasticity enables the valve cover 200 to move towards the valve port 110. When the deflation is completed, the valve cover 200 can be reset to press on the valve port 110 due to the elastic force of the elastic reset assembly 500, and the valve port 110 is closed again. The elastic return assembly 500 in this embodiment includes: the guide bar 510 and the elastic member 520 are connected. The connecting guide rod 510 penetrates the valve body 100 in the up-down direction and is connected with the valve cover 200, the upper end of the elastic member 520 is connected with the valve body 100, and the upper end abuts against one end (lower end) of the connecting guide rod 510, which is away from the valve cover 200; the connection guide 510 is separated from the valve body 100 by the elastic force of the elastic member 520. The elastic member 520 may employ a spring. The connection guide 510 specifically includes: a main body lever 511 and a bottom table 512, wherein a screw portion is provided at one end of the main body lever 511 toward the valve cover 200, and the main body lever 511 is connected to the lower surface of the valve cover 200 through the screw portion. The valve cover 200 comprises a cover disc 220 and a connecting table 230, wherein the connecting table 230 is fixed at the middle position of the cover disc 220; the connection stage 230 may be screw-coupled to the upper end of the connection guide 510. The connection guide rod 510 and the connection table 230 are connected in a screw-connection manner, so that stable connection of the connection guide rod 510 and the valve cover 200 is realized, the bottom table 512 is fixedly arranged at one end of the main body rod 511, which is away from the screw-connection portion, the diameter of the bottom table 512 is larger than the size of the main body rod 511, the bottom table 512 provides an installation position for connection of the spring, and the lower end of the spring can directly lean against the upper surface of the bottom table 512. A support 150 is disposed in the valve port 110 in the middle of the valve body 100, the support 150 is integrally formed on the inner wall of the valve port 110, through holes are formed between the supports 150, and air outlets are formed around the through holes. The body lever 511 of the connection guide 510 is inserted into the through hole and can move in the up-down direction, and the movement of the body lever 511 is stably guided by the valve body 100, thereby improving structural stability.

At least one of the cap 200 and the connection guide 510 is provided as a magnetic attraction member, and serves to open the valve port 110 by moving the cap 200 away from the valve body 100 by magnetic attraction driving of an external magnetic attraction tool. For example, the valve cap 200 and/or the connecting rod 510 may be made of a magnetic iron material or a magnetic iron material. The magnetic force can be generated by the external magnetic tool, so that the magnetic part is attracted, and the purpose of rapidly opening the explosion-proof valve is achieved.

As shown in fig. 1, the working principle of the explosion-proof valve with the novel sealing structure provided by the embodiment is as follows: through setting at least one of the valve cover 200 and the connecting guide rod 510 in the explosion-proof valve as a magnetic attraction piece, the valve core part of the valve cover 200 can be provided with a magnetic attraction function through the magnetic attraction piece, so that when the external magnetic attraction tool is started, the valve cover 200 is driven to be away from the valve body 100 through the magnetic attraction effect, thereby realizing the function of quickly opening the valve port 110, achieving the function of quickly opening the valve, and realizing the quick detection function of a battery pack by quickly inflating at the explosion-proof valve. When the external magnetic tool is deactivated, the connecting guide rod 510 is driven to move by the return elastic force of the elastic member 520, so as to drive the valve cover 200 to quickly reset, thereby sealing the valve port 110 and ensuring the tightness of the product. The quick on-off valve has the advantages that the function of the quick on-off valve is realized to meet the test requirement, additional parts are not required to be added on the explosion-proof valve, and further, additional assembly procedures are not required to be added, so that the structure is more optimized, and the production cost is reduced.

Further, the valve cover 200 and the connection guide 510 are both provided as magnetic attraction members. That is, when the magnetic attraction is performed through the external magnetic attraction tool, the valve cover 200 and the connecting guide rod 510 can be attracted simultaneously, so that the attractive force is larger, and the valve cover 200 can be moved in a magnetic attraction manner more quickly, so that the valve port 110 can be opened more quickly, and the test efficiency is improved.

Further, the explosion-proof valve of the present embodiment further includes a first sealing member 300, and the first sealing member 300 is disposed on the valve body 100 or the valve cover 200 and serves to seal a gap between the valve cover 200 and the valve port 110. The first seal 300 may be provided in a variety of ways, for example, as shown in fig. 1, by conventional machining of the mounting groove followed by assembly of the first seal 300. As shown in fig. 2, 3 and 4, the first sealing member 300 may be integrally provided with the valve cover 200 or the valve cover 200 in this embodiment, so that the first sealing member 300 is directly formed on the valve body 100 or the valve cover 200 in the production process, so that both parts are formed as one piece. The valve body-seal integrated member or the valve cover-seal integrated member is formed by processing the installation site on the valve body 100 or the valve cover 200, and then directly molding the first seal 300 on the valve body 100 or the valve cover 200 through processes such as glue pressing, glue injection and the like. When the explosion-proof valve is assembled, the valve body-sealing element integrated part or the valve cover-sealing element integrated part is directly adopted for assembly, so that the assembly difficulty is greatly reduced, and when the explosion-proof valve is used, if the air pressure of the mixed gas in the battery reaches a preset value, the valve cover 200 is jacked up by the internal air pressure, thereby releasing the gas and reducing the pressure in the battery. When the internal air pressure is reduced to the standard value, the valve cover 200 returns, and the valve cover 200 and the valve body 100 squeeze the first sealing element 300 to seal the valve port 110, so that the space in the battery is sealed. Because the valve body 100 or the valve cover 200 and the first sealing member 300 form an integrated structure, a mode of manually assembling the sealing ring to form a sealing structure is avoided, parts and assembling steps are reduced, the production difficulty is reduced, and the assembling efficiency is improved. And the integrated structure mode can not appear the size deviation problem in the assembly process, and the sealed effect of body and sealing washer is better, effectively promotes explosion-proof valve sealed stability.

In this embodiment, a different structure is used according to the installation position of the first sealing member 300. The specific scheme is as follows:

the first structure: when the first sealing member 300 is disposed on the valve body 100, a first mounting groove 120 is formed on a surface of the valve body 100 facing the valve cover 200, the valve port 110 penetrates through the upper and lower surfaces of the valve body 100, the first mounting groove 120 is formed on the upper surface of the valve body 100, and the first mounting groove 120 is located outside the valve port 110 and surrounds the valve port 110 for a circle. The first sealing member 300 is formed by disposing a glue in the first mounting groove 120, and the first sealing member 300 protrudes out of the notch of the first mounting groove 120. The glue forms the first seal 300 in the first mounting groove 120 by a process of pressing, injecting glue, or the like. The process is mature and the production efficiency is high. By forming the first seal 300 directly within the first mounting groove 120, the two parts are formed as one piece, facilitating subsequent assembly. The first seal 300 is directly depressed by the valve cap 200 to effect sealing of the valve port 110.

The second structure: when the first sealing member 300 is disposed on the valve cover 200, a third mounting groove 210 is opened on a side of the valve cover 200 facing the valve body 100, the third mounting groove 210 is disposed on a lower surface of the valve cover 200, and the third mounting groove 210 surrounds an edge of the valve cover 200 at one circumference. The first sealing member 300 is formed in the third mounting groove 210 by disposing a glue, and the first sealing member 300 protrudes out of the notch of the third mounting groove 210. The glue forms the first seal 300 in the third mounting groove 210 by a process of pressing, injecting glue, etc. By forming the first seal 300 directly within the third mounting groove 210, the two parts are formed as one piece, facilitating subsequent assembly. During the closing process of the valve port 110, the valve cover 200 drives the first sealing element 300 to move downwards, so that the first sealing element 300 can be pressed on the upper surface of the valve body 100, and the valve port 110 is positioned in a ring surrounded by the first sealing element 300, so that the valve port 110 is sealed.

The embodiment is specifically described by taking the first structure as an example, and the specific form of the second structure may be set in the same manner as the first structure, and the detailed structure is as follows.

Further, the side wall of the first mounting groove 120 is provided as an inclined surface 121 such that the notch width of the first mounting groove 120 is smaller than the groove bottom width of the first mounting groove 120. The inner and outer walls of the first mounting groove 120 are each provided with an inclined surface 121, and the inclined surfaces 121 on both sides make the first mounting groove 120 wider at the bottom and narrower at the top. After the first sealing member 300 is formed in the first mounting groove 120, the lower portion of the first sealing member 300 can be completely filled in the first mounting groove 120 without leaving a gap, and the smaller notch can firmly insert the first sealing member 300 into the first mounting groove 120, so that the first sealing member 300 and the valve body 100 cannot fall off, and the connection stability of the first sealing member 300 and the valve body 100 is greatly enhanced.

Further, the first sealing member 300 has a clamping bottom 310 and a protruding sealing portion 320, wherein the clamping bottom 310 is filled in the first mounting groove 120, and the protruding sealing portion 320 protrudes from the notch of the first mounting groove 120. The portion located in the first mounting groove 120 is the snap bottom 310, and the portion protruding upward from the notch of the first mounting groove 120 is the convex sealing portion 320. The first mounting groove 120 is filled with the clamping bottom 310, so that no gap is left at the joint, and the connection stability is enhanced. The cross section of the convex sealing portion 320 is arc-shaped, so that when the valve port 110 is closed, the valve cover 200 presses the convex sealing portion 320, thereby facilitating the deformation of the convex sealing portion 320 after being pressed, and stably sealing the periphery of the valve cover 200.

Further, the side of the valve body 100 facing away from the first seal 300 in the present embodiment is provided with a second seal 400. The second seal 400 is used to seal the connection of the valve body 100 to the battery structure when connected to the battery structure. Thereby improving the sealability of the structural connection of the valve body 100 with the battery. The second seal 400 may be provided in a variety of configurations, such as, for example, a conventional configuration, with the seal groove machined directly to provide a standard seal ring that is assembled into the seal groove during assembly. Alternatively, the valve body 100 and the second seal 400 may be integrally provided.

Further, a second mounting groove 130 is formed on a surface of the valve body 100 facing away from the first sealing member 300 in the present embodiment, and the second mounting groove 130 is formed on a lower surface of the valve body 100 and is formed on an outer side of the valve port 110, and is disposed around the valve port 110. The second seal 400 is formed by disposing glue in the second mounting groove 130, and the second seal 400 protrudes out of the notch of the second mounting groove 130. The second seal 400 is formed by disposing glue within the second mounting groove 130. The second sealing member 400 is formed in the second mounting groove 130 by the processes of glue pressing, glue injection and the like, the process is mature, and the production efficiency is high. By directly molding the second seal 400 within the second mounting groove 130, the valve body 100 and the second seal 400 are formed as one piece, facilitating subsequent assembly. Sealing of valve port 110 is achieved by compressing second seal 400 between the lower surface of valve body 100 and the junction of the battery structure.

Further, a retainer 140 is further disposed on the valve body 100 in this embodiment, and the retainer 140 surrounds the outer side of the valve port 110. The retainer 140 is provided with a height protruding upward. The first seal 300 is located within the retainer 140 with the outer wall of the valve cap 200 abutting the inner wall of the retainer 140. During movement of the valve cap 200, the valve port 110 is fully opened by guiding movement of the valve cap 200 through the retainer 140 when the valve cap 200 is fully moved away from the retainer 140. The retainer 140 not only stabilizes the structure of the valve body 100, but also guides the up-and-down movement of the valve cover 200, thereby stabilizing the movement of the valve cover 200 and preventing the structure from being damaged.

Further, one end of the connection guide 510 facing away from the valve body 100 is provided with a sheath 600, an upper end of the sheath 600 has an opening, and the upper end is connected to the valve body 100, a portion of the connection guide 510 located below a lower surface of the valve body 100 is located in the sheath, and the elastic member 520 is located in the sheath 600. The connection guide 510 and the elastic member 520 are protected by a sheath. Avoiding the problems of corrosion, abrasion and the like of parts.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. An explosion-proof valve capable of rapidly testing air tightness, comprising: the valve body is provided with a valve port;

the valve cover is movably arranged on the valve body along the direction of approaching or separating from the valve port and is used for opening or closing the valve port;

the connecting guide rod penetrates through the valve body and is connected with the valve cover;

one end of the elastic piece is connected with the valve body, and the other end of the elastic piece is connected with one end of the connecting guide rod, which is away from the valve cover;

the connecting guide rod is far away from the valve body under the action of the elastic force of the elastic piece;

at least one of the valve cover and the connecting guide rod is arranged as a magnetic attraction piece and is used for enabling the valve cover to be far away from the valve body through magnetic attraction driving of an external magnetic attraction tool so as to open the valve port.

2. The explosion-proof valve capable of rapidly testing air tightness according to claim 1, wherein the valve cover and the connecting guide rod are both provided as magnetic attraction pieces.

3. The explosion-proof valve capable of rapidly testing air tightness according to claim 1, wherein the valve cover comprises a cover disc and a connecting table, and the connecting table is fixed at the middle position of the cover disc;

the connecting table is connected to the connecting guide rod.

4. A quick-action, airtight explosion-proof valve according to claim 3, wherein said connecting rod comprises: the main body rod is provided with a screw connection part at one end facing the valve cover and is connected to the connecting table through the screw connection part;

the bottom platform, the fixed setting of bottom platform is in the main part pole deviates from the one end of spiro union portion, the diameter of bottom platform is greater than the size of main part pole.

5. The explosion-proof valve capable of rapidly testing air tightness according to claim 4, wherein the elastic piece comprises a spring, the spring is sleeved on the main body rod, and one end of the spring abuts against the valve body, and the other end of the spring abuts against the bottom table.

6. The explosion-proof valve capable of rapidly testing air tightness according to claim 5, wherein one end of the connecting guide rod, which is away from the valve body, is provided with a sheath, the sheath is connected to the valve body, and the elastic piece is located in the sheath.

7. The explosion-proof valve capable of rapidly testing air tightness according to claim 1, wherein a first sealing element is arranged on the valve body or the valve cover and is used for sealing a gap between the valve cover and the valve port.

8. The rapid gas tightness test explosion protection valve of claim 7, wherein said first seal is integrally provided with said valve body when said first seal is provided on said valve body; or alternatively

When the first sealing member is disposed on the valve cover, the first sealing member is integrally disposed with the valve cover.

9. The explosion-proof valve for rapid testing of tightness according to claim 8, wherein the side of the valve body facing away from the first sealing element is provided with a second sealing element.

10. The explosion-proof valve capable of rapidly testing air tightness according to claim 9, wherein a second mounting groove is formed in one surface of the valve body, which faces away from the first sealing element, and the second sealing element is formed in the second mounting groove by setting sizing materials, and protrudes out of a notch of the second mounting groove.