Novel magnetic control breathable anti-explosion valve

Abstract

The utility model relates to the technical field of anti-explosion valves, in particular to a novel magnetic control breathable anti-explosion valve which is installed on a container capable of being sealed and comprises a main body and a fixing seat arranged in the main body, a magnetic piece is arranged at the bottom of the fixing seat, an attraction piece is further arranged in the main body, and the magnetic piece is connected with the attraction piece. The magnetic part and the attraction part are magnetically attracted, and an inner sealing ring located below the attraction part is further arranged in the main body; according to the spring type explosion-proof valve, an existing spring type explosion-proof valve structure is redesigned, a magnetic attraction mode of the magnetic ring and the iron ring is adopted, and the axial side edge of the inner sealing ring is pressed and sealed, so that stable opening pressure is achieved, the protection grade performance is improved, the overall structural design is simple and novel, all the structures are in interference press fit, and the service life is prolonged. The assembling convenience can be met, the connecting stability is met, and the opening timeliness and stability of the valve can be effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof valve technology, and in particular to a novel magnetically controlled ventilated explosion-proof valve. Background Technology

[0002] Power battery packs require explosion-proof valves. As customers continuously reduce the opening pressure of metal explosion-proof valves and increase protection level requirements, they not only have stricter requirements for the application of explosion-proof ventilator valves but also demand improved protective performance. Previously, a spring-loaded fixing force was used to achieve a free-state compression of the sealing ring for protection. For example, Chinese Patent Publication No. "CN220060672U" discloses a waterproof, breathable, and explosion-proof valve, including a seat, valve core, diaphragm, and elastic element. The seat has a flow hole with its axis running vertically; the valve core is vertically movably mounted on the seat and located above the flow hole, allowing it to move vertically to open or close the flow hole.

[0003] However, under complex operating conditions, the changes in spring force and the unbalanced free compression 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, the protection level fails and water leakage occurs. Based on this, in order to further improve the applicability of existing explosion-proof valves, we propose a new type of magnetically controlled ventilated explosion-proof valve. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as unstable opening pressure of explosion-proof valves leading to failure of protection level and water leakage, and to propose a new type of magnetically controlled ventilated explosion-proof valve.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A novel magnetically controlled ventilated explosion-proof valve is designed and installed on a sealable container. The explosion-proof valve includes a main body and a fixed base built into the main body. A magnetic component is provided at the bottom of the fixed base. An attraction component is also provided inside the main body. The magnetic component and the attraction component are magnetically attracted to each other. An inner sealing ring is also provided inside the main body below the attraction component.

[0007] The mounting base also has a ventilation component inside.

[0008] Furthermore, the interior of the main body has two stepped positions, with the inner sealing ring located in the lower stepped position and the magnetic component located in the upper stepped position.

[0009] Furthermore, the suction element is press-fitted into the interior of the body.

[0010] Furthermore, it also includes a guide post, which is connected to the lower part of the fixed base and has a flow channel extending through the fixed base from the bottom of the guide post. The interior of the main body is provided with an annular protrusion that fits with the guide post.

[0011] Furthermore, the guide post is threadedly connected to the fixed seat, and a limiting boss is also provided at the bottom of the guide post.

[0012] Furthermore, the breathable component includes a diaphragm placed inside the fixing seat, and a pressure plate and a cover plate are pressed on top of the diaphragm. The pressure plate has clearance holes on its side, and the bottom of the cover plate has a raised ring with breathable holes on its outer side.

[0013] Furthermore, the diaphragm is bonded to the fixing seat, the pressing sheet is interference-fitted into the inside of the cover plate, and the cover plate is interference-fitted to the top opening of the fixing seat.

[0014] Furthermore, the bottom of the main body also has a threaded portion, and an annular groove is provided on the bottom end face of the main body, in which an outer sealing ring is provided.

[0015] Furthermore, the magnetic component is a magnetic ring, and the attraction component is an iron ring.

[0016] Furthermore, the magnetic ring is interference-fitted to the bottom of the fixing base, and the lower end face of the fixing base has an inwardly recessed portion for fitting the magnetic ring.

[0017] This utility model proposes a novel magnetically controlled ventilated explosion-proof valve, which has the following advantages: By redesigning the existing spring-type explosion-proof valve structure, this utility model adopts a magnetic attraction method between a magnetic ring and an iron ring, and axially presses the inner sealing ring to seal it. This not only achieves stable opening pressure but also improves the protection level. The overall structural design is simple and novel, and the various structures are mostly connected by interference fit, which not only meets the requirements of convenient assembly but also the stability of connection. This effectively ensures the timely and stable opening of the valve, further guaranteeing the user's safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an installation diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is a diagram showing the state of air pressure equilibrium according to this utility model;

[0021] Figure 4 This is a diagram showing the state during pressure relief of this utility model.

[0022] In the diagram: 1. Main body; 11. Stepped position; 12. Ring protrusion; 13. Threaded part; 14. Outer sealing ring; 2. Fixing base; 3. Magnetic component; 4. Attraction component; 5. Inner sealing ring; 6. Ventilation component; 61. Diaphragm; 62. Pressure plate; 621. Clearance hole; 63. Cover plate; 631. Ventilation hole; 7. Guide post; 71. Limiting boss; 8. Container. DETAILED DESCRIPTION

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-4 As one embodiment of this utility model, a novel magnetically controlled ventilated explosion-proof valve is disclosed, which is installed on a sealable container 8. Specifically, the explosion-proof valve includes a main body 1 and a fixed seat 2 built into the main body 1. A magnetic element 3 is provided at the bottom of the fixed seat 2. An attraction element 4 is also provided inside the main body 1. The magnetic element 3 and the attraction element 4 are magnetically attracted to each other. An inner sealing ring 5 is also provided inside the main body 1, located below the attraction element 4.

[0025] The fixed base 2 is also equipped with a breathable component 6. In this embodiment, a magnetic adsorption connection is adopted. When the internal pressure is too high, the magnetic component 3 and the suction component 4 are separated by air pressure. This not only achieves stable opening pressure, but also improves the protection level performance and ensures the stability and safety of pressure relief.

[0026] In some embodiments, the main body 1 of the present invention has two stepped positions 11 inside, the inner sealing ring 5 is located in the lower stepped position 11, and the magnetic element 3 is located in the upper stepped position 11. Furthermore, in this embodiment, the attracting element 4 is press-fitted into the interior of the main body 1.

[0027] Based on the above embodiments, the present invention also includes a guide post 7, which is connected to the lower part of the fixed base 2 and has a flow channel penetrating the fixed base 2 from the bottom of the guide post 7. The main body 1 is provided with an annular protrusion 12 that fits with the guide post 7. That is, in this embodiment, the guide post 7 is set as a hollow post and has a through hole inside the fixed base 2, thus providing a discharge channel for the outward air pressure.

[0028] Furthermore, in this embodiment, the guide post 7 is threadedly connected to the fixed seat 2, and a limiting boss 71 is also provided at the bottom of the guide post 7. The guide post 7 is provided to improve the stability of the fixed seat 2 when it moves upward. Secondly, the design of the limiting boss 71 is adopted to avoid the problem of the fixed seat 2 impacting upward due to the guide post 7 sliding out too far.

[0029] More specifically, the breathable component 6 includes a diaphragm 61 placed inside the fixed base 2. The diaphragm 61 is an eptfe waterproof and breathable membrane. A pressure plate 62 and a cover plate 63 are also pressed on top of the diaphragm 61. The pressure plate 62 is a stainless steel sheet. The side of the pressure plate 62 has a clearance hole 621. The bottom of the cover plate 63 has a protruding ring. The outer side of the protruding ring has a vent hole 631. In the free rotation state, gas can pass through the diaphragm 61. The gas is discharged outward along the clearance hole 621 and the vent hole 631 to the outside of the main body 1, thus ensuring the pressure balance of the inner and outer cavities in the free state.

[0030] In some preferred embodiments, the diaphragm 61 is bonded to the fixing seat 2, the pressure plate 62 is interference-fitted into the inside of the cover plate 63, and the cover plate 63 is interference-fitted to the top opening of the fixing seat 2.

[0031] In addition, the bottom of the main body 1 also has a threaded part 13, which is used to connect the container 8. It should be noted that the container 8 is not specifically limited in this embodiment, including but not limited to the power battery pack. There is an annular groove on the bottom end surface of the main body 1, and an outer sealing ring 14 is provided in the annular groove. The outer sealing ring 14 is used to improve the connection sealing performance of this explosion-proof valve and improve the applicability of installation.

[0032] Furthermore, in this embodiment, the preferred magnetic component 3 is a magnetic ring, which is a permanent magnet ring, and the attraction component 4 is an iron ring, which is also set as a stainless steel iron ring to improve durability. The magnetic ring is interference-fitted to the bottom of the fixing base 2, and there is an inwardly recessed part on the lower end face of the fixing base 2 for fitting the magnetic ring.

[0033] Specifically, such as Figure 3 Under normal operating conditions, the magnetic ring and the iron ring attract each other and close, providing dust and water protection. Internal and external gases circulate through diaphragm 61, achieving pressure balance within and outside the sealed cavity. Figure 4 The diagram shows the depressurization state. When the internal air pressure is greater than or equal to the opening pressure set by the explosion-proof valve, the fixed seat 2 is pushed open, the magnetic ring and the iron ring separate, and the internal gas flows outward to achieve rapid depressurization.

[0034] In summary, this utility model redesigns the existing spring-type explosion-proof valve structure, employing a magnetic attraction method between a magnetic ring and an iron ring, and using axial side compression sealing of the inner sealing ring 5. This not only achieves stable opening pressure but also improves the protection level. The overall structural design is simple and novel, effectively ensuring the timely and stable opening of the valve, and further guaranteeing the user's safety.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel magnetically controlled ventilated explosion-proof valve, installed on a sealable container (8), characterized in that: The explosion-proof valve comprises a main body (1) and a fixed seat (2) built into the main body (1); a magnetic member (3) is arranged at the bottom of the fixed seat (2); an attracting member (4) is also arranged inside the main body (1); the magnetic member (3) is magnetically attracted to the attracting member (4); and an inner sealing ring (5) is also arranged inside the main body (1) and is located below the attracting member (4); Wherein, a ventilation component (6) is also arranged inside the fixing seat (2).

2. According to the novel magnetically controlled air-permeable explosion-proof valve of claim 1, it is characterized in that: The main body (1) has two step positions (11) inside, the inner sealing ring (5) is located in the lower step position (11), and the magnetic component (3) is located in the upper step position (11).

3. According to the novel magnetically controlled air-permeable explosion-proof valve of claim 1, it is characterized in that: The suction member (4) is interference-pressed inside the main body (1).

4. According to the novel magnetically controlled air-permeable explosion-proof valve of claim 1, it is characterized in that: The invention also comprises a guide column (7), wherein the guide column (7) is connected to the bottom of the fixing seat (2), and a flow channel is provided from the bottom of the guide column (7) to penetrate the fixing seat (2), and an annular protrusion (12) which is sleeved with the guide column (7) is provided inside the main body (1).

5. A novel magnetically controlled ventilated explosion-proof valve according to claim 4, characterized in that: The guide column (7) is threadedly connected to the fixing seat (2), and a limiting boss (71) is provided at the bottom of the guide column (7).

6. According to the novel magnetically controlled air-permeable explosion-proof valve of claim 1, it is characterized in that: The breathable component (6) comprises a diaphragm (61) placed inside the fixing seat (2), a pressing plate (62) and a cover plate (63) are pressed on the top of the diaphragm (61), the side of the pressing plate (62) has an avoidance hole (621), the bottom of the cover plate (63) has a convex ring, and the outer side of the convex ring has a breathable hole (631).

7. A novel magnetically controlled ventilated explosion-proof valve according to claim 6, characterized in that: The diaphragm (61) is bonded to the fixing seat (2), the pressing sheet (62) is interference fit inside the cover plate (63), and the cover plate (63) is interference connected to the top opening of the fixing seat (2).

8. According to the novel magnetically controlled air-permeable explosion-proof valve of claim 1, it is characterized in that: The bottom of the main body (1) also has a threaded portion (13), and the bottom end surface of the main body (1) has an annular groove, in which an outer sealing ring (14) is arranged.

9. A novel magnetically controlled air-permeable explosion-proof valve according to any one of claims 1 to 8, characterized in that: The magnetic member (3) is a magnetic ring, and the attracting member (4) is an iron ring.

10. A novel magnetically controlled air-permeable explosion-proof valve according to claim 9, characterized in that: The magnetic ring is interference-connected with the bottom of the fixing seat (2), and a retracted portion for fitting the magnetic ring is provided on the lower end surface of the fixing seat (2).

Images