Adjustable magnetic control breathable anti-explosion valve

Abstract

The utility model relates to the technical field of anti-explosion valves, in particular to an adjustable magnetic control ventilation anti-explosion valve which comprises a valve seat, a fixing seat movably connected in the valve seat, a ventilation assembly arranged in the fixing seat, and a magnetic control mechanism arranged between the fixing seat and the valve seat. Wherein a guide pipe is arranged in the middle of the valve seat, a guide column is movably connected to the inner side of the guide pipe in an inserted mode, the magnetic control mechanism is used for achieving magnetic control during pressure relief, stable opening in the whole pressure relief process can be achieved through the magnetic control mode, and the protection grade performance is also improved; the problem that pressure relief is unstable due to traditional spring type pressure relief is avoided, the opening degree of the magnetic control mechanism can be adjusted through the limiting assembly, the pressure relief flux of the anti-explosion valve can be adaptively adjusted in the pressure relief process, and therefore the use requirements in different protection environments are met, and the anti-explosion valve is suitable for popularization and application. The applicability and the durability are effectively improved.

Description

Technical Field

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

[0002] As lithium-ion battery technology becomes increasingly mature, the demand for lithium-ion batteries in industries such as electric vehicles, UPS, and energy storage power stations is also gradually increasing, so it is particularly important to ensure the quality of lithium-ion batteries. At present, for lithium-ion batteries, its safety is a very important technical indicator, and it is also a problem that restricts the development of lithium-ion batteries. When lithium-ion batteries are in use, it is inevitable that gas will be generated inside the battery, resulting in increased pressure inside the battery, which will result in serious problems such as bulging of the battery shell, leakage, and even explosion. Therefore, once gas is generated inside the battery, it must be discharged immediately, and a pressure relief valve needs to be installed on the battery to discharge the excessive internal pressure.

[0003] For example, Chinese patent publication number "CN203983376U" discloses a battery pressure relief valve and a battery using the pressure relief valve, in which a pressure relief valve is sealed and assembled in a mounting hole of a battery housing, and the pressure relief valve includes a valve body rotatably assembled with the mounting hole, and an anti-disengagement stopper is radially protruded on the hole wall of the mounting hole.

[0004] The current explosion-proof valve structure mostly uses a spring to fix the force value, and the sealing ring is pressed in a free state to play a protective role. Faced with complex operating conditions, the changes in spring force value and the unbalanced free pressing of the sealing ring make it difficult to meet the stable opening pressure and protection level. Secondly, the unloading flux of the existing explosion-proof valve is constant and cannot be adjusted, so its applicability is poor. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art that the gas discharge flux of the existing explosion-proof valve is constant and cannot be adjusted, so the applicability is poor, and an adjustable magnetically controlled breathable explosion-proof valve is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An adjustable magnetically controlled air-permeable explosion-proof valve is designed, comprising a valve seat, a fixed seat is movably connected inside the valve seat, a gas-permeable component is arranged inside the fixed seat, and a magnetic control mechanism is arranged between the fixed seat and the valve seat;

[0008] Among them, there is a guide tube in the middle of the valve seat, and a guide column is movably inserted into the inner side of the guide tube. The guide column is detachably connected to the fixed seat, and a limiting component is also provided at the bottom of the guide column. The limiting component is used to limit the moving length of the guide column inside the guide tube.

[0009] Furthermore, the guide column includes a rod, and a ring-shaped protrusion is provided at the bottom end of the rod. The diameter of the ring-shaped protrusion is larger than the inner diameter of the guide tube, and the limiting assembly is arranged on the ring-shaped protrusion.

[0010] Furthermore, the limiting assembly is at least one adjusting bolt threadedly connected to the annular protrusion, and at least a portion of the free end of the adjusting bolt is vertically opposite to the bottom of the rod.

[0011] Furthermore, the breathable component includes a film paper, a pressing sheet and a pressing cover installed inside the fixing seat, and air holes are provided on the pressing sheet and the pressing cover.

[0012] Furthermore, the magnetic control mechanism includes an iron ring fixedly installed inside the valve seat, a magnetic ring is fixedly installed inside the fixed seat, and the iron ring is arranged opposite to the magnetic ring.

[0013] Furthermore, annular grooves are provided on the inner side of the fixing seat and the outer bottom of the valve seat, and an inner sealing ring and an outer sealing ring are respectively embedded in the two annular grooves.

[0014] Furthermore, a plurality of support arms are fixedly mounted on the inner side of the valve seat, the guide tube is fixedly mounted between the free ends of the plurality of support arms, and threaded holes are also arranged on the end faces of the support arms.

[0015] Furthermore, the bottom of the fixing seat has a threaded column, and the threaded column is threadedly connected to the guide column.

[0016] The utility model proposes an adjustable magnetically controlled breathable explosion-proof valve, which has the following beneficial effects: in the utility model, a magnetic control mechanism is adopted to realize magnetic control during pressure relief, and the magnetic control method can not only realize the stable opening of the entire pressure relief process, but also improve the protection level performance, and avoid the problem of unstable pressure relief caused by traditional spring pressure relief. Secondly, in the utility model, the opening and closing degree of the magnetic control mechanism can also be adjusted by a limit assembly, and the pressure relief flux of the explosion-proof valve can be adaptively adjusted during the pressure relief process, thereby meeting the use requirements in different protection environments and effectively improving the applicability and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the exploded structure of the utility model;

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

[0019] Figure 3 It is a schematic diagram of the structure of the pressure relief state of the utility model;

[0020] Figure 4It is a three-dimensional diagram of the utility model.

[0021] In the figure: 1. valve seat; 11. guide tube; 12. support arm; 13. threaded hole; 14. inner sealing ring; 15. outer sealing ring; 2. fixed seat; 21. threaded column; 3. breathable component; 31. membrane paper; 32. pressing sheet; 33. pressure cover; 4. magnetic control mechanism; 41. iron ring; 42. magnetic ring; 5. guide column; 51. rod; 52. annular protrusion; 6. limit assembly. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-4 An embodiment of the utility model discloses an adjustable magnetically controlled air-permeable explosion-proof valve, which includes a valve seat 1. Specifically, a fixed seat 2 is movably connected inside the valve seat 1, a permeable component 3 is arranged inside the fixed seat 2, and a magnetically controlled mechanism 4 is arranged between the fixed seat 2 and the valve seat 1;

[0024] Among them, the middle part of the valve seat 1 is provided with a guide tube 11, the inner side of the guide tube 11 is movably plugged with a guide column 5, the guide column 5 is detachably connected to the fixed seat 2, and a limiting component 6 is also provided at the bottom of the guide column 5, and the limiting component 6 is used to limit the moving length of the guide column 5 inside the guide tube 11, that is, in this embodiment, the above-mentioned limiting component 6 can be adjusted to achieve the adjustment and control of the moving length of the guide column 5, so that the opening and closing degree of the exhaust port can be adjusted during the pressure relief process to adapt to the requirements of different pressure relief amounts in different pressure relief environments, thereby improving its applicability.

[0025] In some embodiments, the guide column 5 in the utility model includes a rod 51, and a ring convex part 52 is provided at the bottom end of the rod 51. The diameter of the ring convex part 52 is larger than the inner diameter of the guide tube 11, and the limit assembly 6 is arranged on the ring convex part 52. That is to say, in this embodiment, the ring convex part 52 is used as the maximum movement limiter of the entire rod 51. When it is necessary to further reduce the moving length of the rod 51, the pressure relief amount when the valve is relieved can be achieved by adjusting the above-mentioned limit assembly 6.

[0026] Furthermore, the preferred limit assembly 6 is at least one adjusting bolt threadedly connected to the annular protrusion 52, and at least a portion of the free end of the adjusting bolt is opposite to the bottom of the rod 51 up and down. The adjusting bolt can be set to a hexagon socket bolt or a cross bolt, etc., which can be adaptively selected by technical personnel in the relevant field. Before work, the user can rotate the above-mentioned adjusting bolt to move it according to the current installation environment requirements. In one embodiment, when the inward screwing length of the adjusting bolt is large, during the pressure relief process, the opening and closing degree of the entire pressure relief air circuit becomes smaller, and the pressure relief flux is reduced. Conversely, the pressure relief flux becomes larger to meet the adaptation requirements of different protection environments.

[0027] In addition, the breathable component 3 in the utility model includes a membrane paper 31, a pressing plate 32 and a pressing cover 33 installed inside the fixing seat 2. Air holes are opened on the pressing plate 32 and the pressing cover 33. The membrane paper 31 is a waterproof and breathable membrane. When in a free state, the gas can be discharged from the inside of the protected part along the membrane paper 31 along the air holes to the outside to ensure the balance of the internal and external air pressure.

[0028] In some embodiments, the magnetic control mechanism 4 includes an iron ring 41 fixedly installed inside the valve seat 1, and a magnetic ring 42 is fixedly installed inside the fixed seat 2. The iron ring 41 is arranged opposite to the magnetic ring 42. In some preferred embodiments, the iron ring 41 and the pressing sheet 32 ​​in the utility model are both set to stainless iron to enhance their durability.

[0029] like Figure 2 As shown, under normal working conditions, the magnetic ring 42 and the iron ring 41 attract each other and close to each other, playing a role of dust and water prevention, and the internal and external gases circulate through the membrane paper 31 to achieve pressure balance inside and outside the sealed cavity;

[0030] like Figure 3 As shown, 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 fixing seat 2 is pushed open, the magnetic ring 42 is separated from the iron ring 41, and the internal gas flows outward to achieve rapid pressure relief.

[0031] In addition, in order to improve the sealing performance of the explosion-proof valve during assembly, annular grooves are provided on the inner side of the fixing seat 2 and the outer bottom of the valve seat 1 in the utility model, and an inner sealing ring 14 and an outer sealing ring 15 are respectively embedded in the two annular grooves.

[0032] In more detail, in the present embodiment, a plurality of support arms 12 are fixedly installed on the inner side of the valve seat 1, the guide tube 11 is fixedly installed between the free ends of the plurality of support arms 12, and a threaded hole 13 is further provided on the end surface of the support arm 12. The provided bolt hole 13 is used to improve the convenience of installation of the explosion-proof valve. Furthermore, in the present embodiment, four support arms 12 are provided, and of course, four threaded holes 13 are also relatively provided.

[0033] It should be noted that in this embodiment, the bottom of the fixing seat 2 has a threaded column 21, and the threaded column 21 is threadedly connected to the guide column 5. The threaded connection can greatly improve the convenience of assembling the fixing seat 2 and the guide column 5.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable magnetically controlled gas-permeable explosion-proof valve, comprising a valve seat (1), characterized in that: A fixed seat (2) is movably connected inside the valve seat (1), a breathable component (3) is arranged inside the fixed seat (2), and a magnetic control mechanism (4) is arranged between the fixed seat (2) and the valve seat (1); The valve seat (1) has a guide tube (11) in the middle, a guide column (5) is movably inserted into the inner side of the guide tube (11), the guide column (5) is detachably connected to the fixed seat (2), and a limit assembly (6) is also provided at the bottom of the guide column (5), and the limit assembly (6) is used to limit the moving length of the guide column (5) inside the guide tube (11).

2. The adjustable magnetically controlled air-permeable explosion-proof valve according to claim 1 is characterized in that: The guide column (5) comprises a rod (51), and a protruding ring (52) is provided at the bottom end of the rod (51). The diameter of the protruding ring (52) is larger than the inner diameter of the guide tube (11), and the limiting assembly (6) is arranged on the protruding ring (52).

3. The adjustable magnetically controlled air-permeable explosion-proof valve according to claim 2 is characterized in that: The limiting assembly (6) is at least one adjusting bolt threadedly connected to the annular protrusion (52), and at least a portion of the free end of the adjusting bolt is vertically opposite to the bottom of the rod (51).

4. The adjustable magnetically controlled air-permeable explosion-proof valve according to claim 1 is characterized in that: The air permeable component (3) comprises a membrane paper (31) installed inside the fixing seat (2), a pressing sheet (32) and a pressing cover (33), and air holes are provided on the pressing sheet (32) and the pressing cover (33).

5. The adjustable magnetically controlled air-permeable explosion-proof valve according to claim 1 is characterized in that: The magnetic control mechanism (4) comprises an iron ring (41) fixedly mounted inside the valve seat (1), a magnetic ring (42) fixedly mounted inside the fixed seat (2), and the iron ring (41) and the magnetic ring (42) are arranged opposite to each other.

6. An adjustable magnetically controlled air-permeable explosion-proof valve according to any one of claims 1 to 5, characterized in that: The inner side of the fixed seat (2) and the outer bottom of the valve seat (1) are both provided with annular grooves, and an inner sealing ring (14) and an outer sealing ring (15) are respectively embedded in the two annular grooves.

7. The adjustable magnetically controlled air-permeable explosion-proof valve according to claim 1 is characterized in that: A plurality of support arms (12) are fixedly mounted on the inner side of the valve seat (1), the guide tube (11) is fixedly mounted between the free ends of the plurality of support arms (12), and a threaded hole (13) is also arranged on the end surface of the support arm (12).

8. The adjustable magnetically controlled air-permeable explosion-proof valve according to claim 1 is characterized in that: The bottom of the fixing seat (2) is provided with a threaded column (21), and the threaded column (21) is threadedly connected to the guide column (5).

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