Magnetic control type breathable anti-explosion valve

Abstract

The utility model relates to the technical field of anti-explosion valves, in particular to a magnetic control type breathable anti-explosion valve which comprises a valve body, a magnetically-attractable component arranged above the valve body, at least one magnetic attraction piece arranged at the upper end of the valve body, a membrane and a pressing assembly arranged above the magnetically-attractable component, and a magnetic control type breathable anti-explosion valve. The pressing assembly is used for fixing the diaphragm in the magnetically-attractable component; according to the embodiment, the cover plate in the sealing state of the anti-explosion valve is positioned in the mode that the iron ring is attracted by the magnetic attraction piece, so that the problem that a gas circuit is opened due to instability of a spring is avoided, the stability of anti-explosion control is greatly improved, and then the gland and the fixing base are in threaded connection, so that after long-time work, the cover plate is not prone to falling off, and the anti-explosion effect is good. When the pressure relief valve is used, the gland can be rotated to be taken down, so that the internal diaphragm can be conveniently replaced, and the problems that air holes are blocked due to pollution of the diaphragm, and the pressure relief stability is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof valves, in particular to a magnetically controlled air-permeable explosion-proof valve. Background Art

[0002] As customers continuously reduce the opening pressure of metal explosion-proof valves and raise the requirements for protection levels, in addition to the strict requirements for the application of explosion-proof air-permeable valves on the client side, the protection performance also needs to be improved. Originally, a customized spring with a fixed force value was used to press the sealing ring in a free state to play a protective role. Facing complex operating conditions, changes in the spring force value and unbalanced free pressing of the sealing ring make it difficult to meet the stable opening pressure and protection level. When the opening pressure of the explosion-proof valve is unstable, it may lead to the failure of the protection level and water leakage.

[0003] In addition, the diaphragm of the current explosion-proof valve structure is embedded inside the valve body. After long-term operation, problems such as pollution and influence on the stability of pressure relief are likely to occur. And the current assembled structure mostly adopts the embedding method, which is not convenient for replacing the diaphragm. Based on this, in order to further optimize the applicability of the existing explosion-proof valve, we propose a magnetically controlled air-permeable explosion-proof valve. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art and propose a magnetically controlled air-permeable explosion-proof valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] Design a magnetically controlled air-permeable explosion-proof valve, including a valve body. A magnetizable component is arranged above the valve body, and at least one magnetic attracting member is arranged at the upper end of the valve body. A diaphragm and a pressing component are arranged above the magnetizable component, and the pressing component is used to fix the diaphragm in the magnetizable component;

[0007] Among them, the pressing component is detachably connected to the magnetizable component, and an elastic component connected to the pressing component is arranged in the middle of the valve body.

[0008] Further, the middle part of the valve body has a first concave position and a second concave position. The magnetizable component is arranged in the first concave position, and the pressing component is arranged in the second concave position.

[0009] Further, a plurality of magnetic attracting members are arranged and distributed circumferentially along the stepped surface of the first concave position;

[0010] The magnetizable component includes a fixed seat. An iron ring is sleeved outside the fixed seat, and a first sealing ring is also sleeved outside the fixed seat. The iron ring contacts and magnetically attracts the magnetic attracting member.

[0011] Further, the pressing assembly includes a gland. An iron sheet is embedded in the inner ring of the gland, and a pressing ring is rotatably connected thereto. The gland is threadedly connected to the fixed seat. There is a gap between the outer periphery of the gland and the inner circumferential surface of the valve body, and an air passage is provided at the bottom of the gland.

[0012] Further, a ring protrusion is provided in the inner ring on the lower side of the gland, and a ring groove is provided on the outer shaft of the pressing ring. The ring protrusion is rotatably connected to the ring groove.

[0013] Further, two twisting protrusions are provided at the upper end of the gland, and the two twisting protrusions are circumferentially spaced 180 degrees apart.

[0014] Further, the elastic assembly includes a hollow guide post. The guide post passes through the valve body and is threadedly connected to the fixed seat. A spring is sleeved outside the guide post.

[0015] Further, a circular groove is provided at the bottom of the valve body, and a second sealing ring is fixed in the circular groove.

[0016] A magnetically controlled air-permeable explosion-proof valve proposed by the present utility model has the beneficial effects that: in this embodiment, by adopting the method of using a magnetic attracting member to attract an iron ring, the cover plate in the sealed state of the explosion-proof valve is positioned to avoid the problem of the air passage being opened due to the instability of the spring, greatly improving the stability of explosion-proof control. Secondly, by adopting the design of the first sealing ring, the sealing performance can be effectively improved, ensuring the working stability of the entire valve body under normal working conditions. By threadedly connecting the gland to the fixed seat, after long-term operation, the gland can be rotated and removed to conveniently replace the internal diaphragm, so as to avoid the problem that the diaphragm is blocked by pores due to pollution, affecting the pressure relief stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded structural schematic diagram of the present utility model;

[0018] Figure 2 is a structural schematic diagram of the present utility model in a normal state;

[0019] Figure 3 is a structural schematic diagram of the present utility model in a pressure relief state.

[0020] In the figure: 1, valve body; 11, first concave position; 12, second concave position; 13, second sealing ring; 2, magnetizable component; 21, fixed seat; 22, iron ring; 23, first sealing ring; 3, magnetic attracting member; 4, diaphragm; 5, pressing assembly; 51, gland; 511, ring protrusion; 512, air passage; 52, iron sheet; 53, pressing ring; 54, twisting protrusion; 6, elastic assembly; 61, guide post; 62, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] Refer to Figures 1-3 For an embodiment of the present utility model, it discloses a magnetically controlled breathable explosion-proof valve. The explosion-proof valve includes a valve body 1. Specifically, a magnetizable component 2 is arranged above the valve body 1, and at least one magnetic attraction member 3 is arranged at the upper end of the valve body 1. Preferably, in this embodiment, the magnetic attraction member 3 is arranged as a magnet. A diaphragm 4 and a pressing assembly 5 are arranged above the magnetizable component 2. The diaphragm 4 is an e-PTFE membrane paper, and the pressing assembly 5 is used to fix the diaphragm 4 in the magnetizable component 2;

[0023] Wherein, the pressing assembly 5 is detachably connected to the magnetizable component 2, and an elastic component 6 connected to the pressing assembly 5 is arranged in the middle of the valve body 1.

[0024] In some embodiments, a first concave position 11 and a second concave position 12 are provided in the middle of the valve body 1 of the present utility model. The magnetizable component 2 is arranged in the first concave position 11, and the pressing assembly 5 is arranged in the second concave position 12.

[0025] On the basis of the above embodiments, a plurality of magnetic attraction members 3 are arranged in the present utility model and are circumferentially distributed along the stepped surface of the first concave position 11. That is, a plurality of mounting holes are circumferentially distributed on the upper end surface of the first concave position 11 in this embodiment. During assembly, the above magnetic attraction members 3 can be embedded in the mounting holes;

[0026] The magnetizable component 2 includes a fixing seat 21. An iron ring 22 is sleeved outside the fixing seat 21, and a first sealing ring 23 is also sleeved outside the fixing seat 21. The iron ring 22 is in contact with and magnetically attracted to the magnetic attraction member 3.

[0027] That is to say, in this embodiment, by adopting the method of using the magnetic attraction member 3 to adsorb the iron ring 22, it is used to position the gland 51 of the sealing state of the explosion-proof valve to avoid the problem of the gas path being opened due to the instability of the spring 62, greatly improving the stability of explosion-proof control.

[0028] Based on the above embodiments, in the present utility model, the pressing assembly 5 includes a gland 51. An iron sheet 52 is embedded in the inner ring of the gland 51, and a pressing ring 53 is rotatably connected. The gland 51 is threadedly connected to the fixed seat 21. There is a gap between the outer periphery of the gland 51 and the inner circumferential surface of the valve body 1, and an air passage 512 is opened at the bottom of the gland 51. Of course, an avoidance opening opposite to the air passage 512 is also opened on the outside of the iron sheet 52 to ensure that when working normally, the air pressure inside the battery pack can be discharged outward along the diaphragm 4, the avoidance opening, and the air passage 512, achieving the effect of pressure balance. Secondly, in the present utility model, by connecting the gland 51 and the fixed seat 21 in a threaded manner, after long-term operation, the gland 51 can be rotated and removed to conveniently replace the internal diaphragm 4, so as to avoid the problem that the diaphragm 4 is blocked due to contamination, affecting the pressure relief stability.

[0029] In addition, in this embodiment, a ring protrusion 511 is provided in the inner ring on the lower side of the gland 51, and a ring groove is provided on the outer surface shaft of the pressing ring 53. The ring protrusion 511 is rotatably connected to the ring groove. By rotatably connecting the pressing ring 53, during the threaded connection of the gland 51, the stable contact between the pressing ring 53 and the diaphragm 4 can be ensured. Since the pressing ring 53 can rotate independently, when connecting, the pressing ring 53 is prevented from generating a torsional force on the diaphragm 4, resulting in problems such as damage and deformation of the diaphragm 4.

[0030] Of course, in order to facilitate the rotation of the gland 51, in the present utility model, two twisting protrusions 54 are provided at the upper end of the gland 51. The two twisting protrusions 54 are circumferentially spaced 180 degrees. Preferably, in this embodiment, the twisting protrusions 54 are in the shape of a linear protrusion structure. The cooperation of the two twisting protrusions 54 can achieve the convenient rotation of the gland 51.

[0031] In some embodiments, in the present utility model, the elastic component 6 includes a hollow guide post 61. The guide post 61 passes through the valve body 1 and is threadedly connected to the fixed seat 21. A spring 62 is also sleeved outside the guide post 61.

[0032] In addition, in order to ensure the connection sealing performance between the valve body 1 and the battery pack, in the present utility model, a circular groove is opened at the bottom of the valve body 1, and a second sealing ring 13 is fixed in the circular groove. In addition, a threaded hole is also provided at the bottom of the valve body 1. During installation, the valve body 1 can be fixed on the battery pack through bolts.

[0033] During specific assembly, the following process is adopted:

[0034] Step 1, fix the pressing ring 53 and the iron sheet 52 to the gland 51 together by interference stamping to form a first component;

[0035] Step 2: Fix the diaphragm 4 to the fixed seat 21 by means of back gluing to form the second component;

[0036] Step 3: Fix the first component, the second component and the iron ring 22 together to form the third component;

[0037] Step 4: Assemble and fix the first sealing ring 23 to the third component by means of groove assembly to form the fourth component;

[0038] Step 5: Fix the magnetic part 3 to the valve body 1 by means of interference stamping, and fix the second sealing ring 13 to the valve body 1 by means of groove assembly to form the fifth component;

[0039] Step 6: Pass the guide post 61 and the spring 62 through the fifth component and fix them to the fourth component by means of threads to form the finished product.

[0040] Specifically, in the normal working condition, the magnets distributed in a ring shape and the annular iron ring 22 attract and close each other, playing a role in dust and water prevention. The internal and external gases flow through the membrane paper e-PTFE to achieve the pressure balance inside and outside the sealed cavity;

[0041] In the pressure relief state, when the internal air pressure is greater than or equal to the opening pressure set by the explosion-proof valve, the fixed seat 21 is pushed open, and the magnets distributed in a ring shape are separated from the annular iron ring 22, and the internal gas flows outwards to achieve rapid pressure relief.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A magnetically controlled gas-permeable explosion-proof valve, comprising a valve body (1), characterized in that: A magnetically attractable component (2) is arranged above the valve body (1), at least one magnetically attractable component (3) is arranged at the upper end of the valve body (1), a diaphragm (4) and a clamping assembly (5) are arranged above the magnetically attractable component (2), and the clamping assembly (5) is used to fix the diaphragm (4) in the magnetically attractable component (2); The clamping component (5) is detachably connected to the magnetically attractable component (2), and an elastic component (6) connected to the clamping component (5) is provided in the middle of the valve body (1); The valve body (1) has a first recess (11) and a second recess (12) in the middle thereof, the magnetically attractable component (2) being arranged in the first recess (11), and the pressing assembly (5) being arranged in the second recess (12); The magnetic attraction members (3) are provided in plurality and are distributed along the circumference of the stepped surface of the first recess (11); The magnetically attractable component (2) comprises a fixing seat (21), an iron ring (22) is sleeved on the outer side of the fixing seat (21), a first sealing ring (23) is also sleeved on the outer side of the fixing seat (21), and the iron ring (22) contacts and magnetically attracts the magnetically attractable component (3); The clamping assembly (5) comprises a gland (51), an iron sheet (52) is embedded in the inner ring of the gland (51), and a compression ring (53) is rotatably connected thereto, the gland (51) is threadedly connected to the fixing seat (21), a gap is provided between the outer periphery of the gland (51) and the inner ring surface of the valve body (1), and an air passage (512) is provided at the bottom of the gland (51); Two twisting protrusions (54) are provided at the upper end of the pressure cover (51), and the two twisting protrusions (54) are spaced one hundred and eighty degrees apart in a circumference.

2. The magnetically controlled air-permeable explosion-proof valve according to claim 1, characterized in that: An annular protrusion (511) is provided in the lower inner ring of the pressure cover (51), and an annular groove is provided on the outer shaft of the pressure ring (53), and the annular protrusion (511) is rotatably connected to the annular groove.

3. The magnetically controlled air-permeable explosion-proof valve according to claim 1, characterized in that: The elastic component (6) comprises a guide column (61) of a hollow structure, the guide column (61) passing through the valve body (1) and being threadedly connected to the fixing seat (21), and a spring (62) being sleeved on the outer side of the guide column (61).

4. The magnetically controlled air-permeable explosion-proof valve according to claim 1, characterized in that: The bottom of the valve body (1) is provided with a ring groove, and a second sealing ring (13) is fixed in the ring groove.

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