Novel anti-explosion pressure release valve

Abstract

The utility model relates to the technical field of waterproof ventilation, in particular to a novel anti-explosion pressure release valve which comprises a valve body and a ventilation pressure release assembly, the valve body comprises a valve head and a connecting body, the valve head is provided with a downward concave part, the bottom face of the downward concave part is provided with a through hole, and the ventilation pressure release assembly comprises a tubular part, a ventilation seat, a waterproof ventilation film and a top cover. A gap is formed between the top cover and the inner wall of the downward concave part, a gap is formed between the outer wall of the tubular part and the inner wall of the through hole, the tubular part is provided with a pressure relief hole and sleeved with a spring, a flange is arranged on the outer wall of the lower end of the tubular part, one end of the spring is connected with the flange, and the other end of the spring is connected to the inner wall of the through hole; and the flange is in clearance fit with the inner wall of the through hole. According to the anti-explosion pressure relief valve, the whole spring is surrounded in the valve body, the spring is prevented from being damaged in the transportation and installation process, the product quality is guaranteed, and the accuracy and sensitivity of opening and closing of the anti-explosion pressure relief valve are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproof and breathable, and particularly relates to a new type of explosion-proof pressure relief valve. Background Art

[0002] The explosion-proof pressure relief valve is an important component, which is widely used in equipment that needs waterproof, breathable and pressure relief in industries such as petrochemical, metallurgy, electric power, gas, and automobile, and is usually installed on the outer shell of the equipment. The core function of the new type of explosion-proof pressure relief valve is to allow gas molecules to pass through while preventing the intrusion of liquid and pollutants to balance the pressure, and can quickly relieve pressure when the internal pressure of the equipment or system exceeds the safety threshold to prevent explosion. During the use of some equipment, the internal air pressure may rise sharply. For example, during the use of a battery, the internal chemical reaction may generate gas, which will cause the internal pressure to rise sharply. When the internal pressure exceeds the preset pressure value, the valve of the new type of explosion-proof pressure relief valve will open under pressure, so that the internal gas of the equipment can flow out quickly, release the internal pressure, avoid explosion, and play a role in safety protection. The traditional explosion-proof pressure relief valve generally uses a spring for switching, but the spring is directly exposed outside the valve body, and it is easily damaged during transportation and installation, thus affecting the accuracy of the valve body switching. Summary of the Utility Model

[0003] In order to solve the above problems, the utility model provides a new type of explosion-proof pressure relief valve.

[0004] The utility model is realized by the following scheme:

[0005] A new type of explosion-proof pressure relief valve, characterized by comprising:

[0006] A valve body, the valve body includes a valve head, a connecting body arranged at the lower end of the valve head, the valve head is provided with a concave part, the bottom surface of the concave part is provided with a through hole, and the through hole penetrates to the bottom surface of the connecting body;

[0007] A breathable and pressure relief component, the breathable and pressure relief component includes a tubular part arranged in the through hole, a breathable seat connected to the upper end of the tubular part, a waterproof and breathable membrane arranged on the breathable seat, and a top cover connected to the breathable seat. There is a gap between the top cover and the inner wall of the concave part, and there is a gap between the outer wall of the tubular part and the inner wall of the through hole. The tubular part is provided with a pressure relief hole. A spring is sleeved on the tubular part. A flange is arranged on the outer wall of the lower end of the tubular part. One end of the spring is connected to the flange, and the other end of the spring is connected to the inner wall of the through hole. The flange is in clearance fit with the inner wall of the through hole.

[0008] Further, the breathable seat is provided with a first breathable hole corresponding to the position of the tubular part.

[0009] Further, the connection between the breathable seat and the tubular member is a threaded connection.

[0010] Further, a plurality of second breathable holes are provided on the side wall of the top cover.

[0011] Further, a ferromagnetic metal member is connected to the inner bottom surface of the top cover.

[0012] Further, a first installation groove is provided in the concave portion, and a first sealing ring is provided in the first installation groove.

[0013] Further, a second installation groove is provided on the bottom surface of the valve body, and a second sealing ring is provided in the second installation groove.

[0014] Further, three pressure relief holes are uniformly provided based on the axis of the tubular member.

[0015] Further, a limiting platform is provided on the inner wall of the through hole, and the end of the spring is connected to the bottom surface of the limiting platform.

[0016] Further, a convex platform is provided on the edge of the top surface of the breathable seat, and the waterproof breathable film is connected to the convex platform.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] In the present utility model, a flange is provided on the outer wall of the lower end of the tubular member, the end of the spring sleeved on the tubular member is connected to the flange, and the flange and the inner wall of the through hole are in clearance fit, surrounding the spring entirely inside the valve body, avoiding damage to the spring during transportation and installation, ensuring the quality of the product, and ensuring the accuracy and sensitivity of the explosion-proof pressure relief valve switch. On the other hand, the cooperation between the flange and the inner wall of the through hole plays a guiding role, making the combination of the tubular member, the breathable seat, and the top cover move more stably, avoiding jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional schematic view of a novel explosion-proof pressure relief valve provided by the present utility model.

[0020] Figure 2 is a schematic view of the overall structure of the present utility model.

[0021] Figure 3 is a schematic view of another angle of the present utility model.

[0022] Figure 4 is a schematic view of the tubular member of the present utility model.

[0023] The figure includes:

[0024] Valve body 1, valve head 11, connecting body 12, concave part 13, through hole 14, first installation groove 15, first sealing ring 16, second installation groove 17, second sealing ring 18, limiting platform 19, tubular part 2, pressure relief hole 21, flange 22, spring 23, breathable seat 3, first breathable hole 31, convex platform 32, waterproof breathable membrane 4, top cover 5, second breathable hole 51, ferromagnetic metal part 52. Detailed implementation mode

[0025] For the convenience of those skilled in the art to understand the present utility model, the present utility model will be further described in detail below in conjunction with specific embodiments and drawings.

[0026] Embodiment 1

[0027] Refer to Figures 1 to 4 , a new type of explosion-proof pressure relief valve provided by the present utility model, characterized in that it includes a valve body 1 and a breathable pressure relief component. Among them, the valve body 1 includes a valve head 11, a connecting body 12 arranged at the lower end of the valve head 11, the valve head 11 is provided with a concave part 13, the bottom surface of the concave part 13 is provided with a through hole 14, and the through hole 14 penetrates to the bottom surface of the connecting body 12.

[0028] The breathable pressure relief component includes a tubular part 2 arranged in the through hole 14, a breathable seat 3 connected to the upper end of the tubular part 2, a waterproof breathable membrane 4 arranged on the breathable seat 3, and a top cover 5 connected to the breathable seat 3. There is a gap between the top cover 5 and the inner wall of the concave part 13, and there is a gap between the outer wall of the tubular part 2 and the inner wall of the through hole 14. The tubular part 2 is provided with a pressure relief hole 21. After the top cover 5 is installed on the breathable seat 3, the two form a combined body, and the combined body forms a seal with the bottom surface of the concave part 13 under normal working conditions. When the internal pressure of the equipment rises to exceed the set value, the gas can flow out from the pressure relief hole 21, and after passing through the gap between the tubular part 2 and the through hole 14, it flows out from the concave part 13 of the valve head 11 to the outside.

[0029] A spring 23 is sleeved on the tubular part 2. A flange 22 is arranged on the outer wall of the lower end of the tubular part 2. One end of the spring 23 is connected to the flange 22, and the other end of the spring 23 is connected to the inner wall of the through hole 14. When the internal pressure of the equipment is greater than the yield force of the spring 23, the spring 23 is compressed. At this time, the tubular part 2 moves upward, so that the gas can flow out from the concave part 13. The flange 22 is in clearance fit with the inner wall of the through hole 14. Specifically, the outer wall of the flange 22 is attached to the inner wall of the through hole 14. Such a connection method can not only wrap the spring 23 to prevent the spring 23 from being directly exposed, but also play a guiding role in the movement process of the tubular part 2, making the movement of the tubular part 2 more stable.

[0030] The breathable seat 3 is provided with a first breathable hole 31 at a position corresponding to the tubular member 2. The breathable seat 3 and the tubular member 2 are threadedly connected, and the threaded connection method facilitates the assembly operation.

[0031] A plurality of second breathable holes 51 are provided on the side wall of the top cover 5. In the normal working state, the gas inside the device is discharged to the outside through the first breathable hole 31, the waterproof breathable membrane 4, and the second breathable hole 51, or the external gas enters the device through the second breathable hole 51, the waterproof breathable membrane 4, and the first breathable hole 31 to achieve the purpose of balancing the air pressure.

[0032] A ferromagnetic metal member 52 is connected to the inner bottom surface of the top cover 5. The ferromagnetic metal member 52 can be adsorbed by a magnet, and in the post-production test, the combination of the tubular member 2, the breathable seat 3, and the top cover 5 is moved by magnet adsorption.

[0033] The concave portion 13 is provided with a first mounting groove 15, and the first mounting groove 15 is provided with a first sealing ring 16. The combination of the breathable seat 3 and the top cover 5 abuts against the first sealing ring 16 in the normal working state to achieve sealing, and in the pressure relief state with too high pressure, the combination of the breathable seat 3 and the top cover 5 is separated from the first sealing ring 16 to form a gap, so that the gas can flow out from the gap between the combination and the concave portion 13.

[0034] The bottom surface of the valve body 1 is provided with a second mounting groove 17, and the second mounting groove 17 is provided with a second sealing ring 18. The second sealing ring 18 contacts the outer shell of the device to form a seal.

[0035] A limiting platform 19 is provided on the inner wall of the through hole 14, and the end of the spring 23 is connected to the bottom surface of the limiting platform 19. The limiting platform 19 is arranged around the inner wall of the through hole 14, which not only limits the spring 23 but also guides the tubular member 2.

[0036] A convex platform 32 is provided at the top edge of the breathable seat 3, and the waterproof breathable membrane 4 is connected to the convex platform 32. The waterproof breathable membrane 4 can be connected to the convex platform 32 by welding. After the top cover 5 and the breathable seat 3 are connected, the top cover 5 presses the waterproof breathable membrane 4 against the convex platform 32.

[0037] During the use of the present utility model, it is threadedly connected to the outer shell of the device through the thread provided on the outer wall of the connecting body 12. In the normal working state, gas exchange between the inside and the outside of the device is carried out through the first vent hole 31, the waterproof breathable membrane 4, and the second vent hole 51 to achieve internal and external pressure balance. When the pressure inside the device rises sharply, the spring 23 is compressed under the action of the pressure. At this time, the combination of the top cover 5 and the breathable seat 3 leaves the first sealing ring 16 to form a gap, and the internal gas can quickly flow out to the outside through the pressure relief hole 21 and the above gap, so that the internal and external pressures of the device quickly reach a balanced state, avoiding explosion and ensuring the safety of the device.

[0038] Embodiment 2

[0039] Refer to Figures 1 to 4 A novel explosion-proof pressure relief valve provided by the present utility model is characterized in that it includes a valve body 1 and a breathable pressure relief component. Among them, the valve body 1 includes a valve head 11, a connecting body 12 provided at the lower end of the valve head 11. The valve head 11 is provided with a concave portion 13, and a through hole 14 is provided on the bottom surface of the concave portion 13, and the through hole 14 penetrates to the bottom surface of the connecting body 12.

[0040] The breathable pressure relief component includes a tubular member 2 provided in the through hole 14, a breathable seat 3 connected to the upper end of the tubular member 2, a waterproof breathable membrane 4 provided on the breathable seat 3, and a top cover 5 connected to the breathable seat 3. There is a gap between the inner wall of the top cover 5 and the concave portion 13, and a gap between the outer wall of the tubular member 2 and the inner wall of the through hole 14. The tubular member 2 is provided with a pressure relief hole 21. After the top cover 5 is installed on the breathable seat 3, the two form a combination body, and this combination body forms a seal with the bottom surface of the concave portion 13 in the normal working state. When the pressure inside the device rises above the set value, the gas can flow out from the pressure relief hole 21, and after passing through the gap between the tubular member 2 and the through hole 14, it flows out to the outside from the concave portion 13 of the valve head 11.

[0041] A spring 23 is sleeved on the tubular member 2. A flange 22 is provided on the outer wall of the lower end of the tubular member 2. One end of the spring 23 is connected to the flange 22, and the other end of the spring 23 is connected to the inner wall of the through hole 14. When the pressure inside the device is greater than the yield force of the spring 23, the spring 23 is compressed. At this time, the tubular member 2 moves upward, so that the gas can flow out from the concave portion 13. The flange 22 is in clearance fit with the inner wall of the through hole 14. Specifically, the outer wall of the flange 22 is attached to the inner wall of the through hole 14. Such a connection method can not only wrap the spring 23 to avoid the spring 23 being directly exposed, but also play a guiding role during the movement of the tubular member 2, making the movement of the tubular member 2 more stable.

[0042] The breathable seat 3 is provided with a first breathable hole 31 at a position corresponding to the tubular member 2. The breathable seat 3 and the tubular member 2 are connected by threads, and the threaded connection facilitates the assembly operation.

[0043] The side wall of the top cover 5 is provided with a plurality of second breathable holes 51. Specifically, in this embodiment, the second breathable holes 51 are arranged along the radial direction of the top cover 5. In this embodiment, 4 second breathable holes 51 are evenly arranged. In the normal working state, the gas inside the device is discharged to the outside through the first breathable hole 31, the waterproof breathable membrane 4, and the second breathable hole 51, or the external gas enters the device interior through the second breathable hole 51, the waterproof breathable membrane 4, and the first breathable hole 31 to achieve the purpose of balancing the air pressure.

[0044] A ferromagnetic metal part 52 is connected to the inner bottom surface of the top cover 5. The ferromagnetic metal part 52 can be adsorbed by a magnet, and in the post-production test, the combination of the tubular member 2, the breathable seat 3, and the top cover 5 is moved by magnet adsorption.

[0045] The concave part 13 is provided with a first installation groove 15, and the first installation groove 15 is provided with a first sealing ring 16. The combination of the breathable seat 3 and the top cover 5 abuts against the first sealing ring 16 in the normal working state to achieve sealing, while in the pressure relief state with too high pressure, the combination of the breathable seat 3 and the top cover 5 is separated from the first sealing ring 16 to form a gap, so that the gas can flow out from the gap between the combination and the concave part 13.

[0046] The bottom surface of the valve body 1 is provided with a second installation groove 17, and the second installation groove 17 is provided with a second sealing ring 18. The second sealing ring 18 contacts the outer shell of the device to form a seal.

[0047] The pressure relief holes 21 are evenly arranged in three with the axis of the tubular member 2 as the reference. In this embodiment, the pressure relief holes 21 are kidney-shaped holes. Specifically, in implementation, the number and shape of the pressure relief holes 21 are not specifically limited and can be set according to actual needs.

[0048] A limiting platform 19 is arranged on the inner wall of the through hole 14, and the end of the spring 23 is connected to the bottom surface of the limiting platform 19. The limiting platform 19 is arranged around the inner wall of the through hole 14, which not only limits the spring 23 but also guides the tubular member 2.

[0049] A convex platform 32 is arranged at the top edge of the breathable seat 3, and the waterproof breathable membrane 4 is connected to the convex platform 32. The waterproof breathable membrane 4 can be connected to the convex platform 32 by welding. After the top cover 5 and the breathable seat 3 are connected, the top cover 5 presses the waterproof breathable membrane 4 against the convex platform 32.

[0050] During the use of the present utility model, it is threadedly connected to the outer shell of the device through the thread provided on the outer wall of the connecting body 12. In the normal working state, gas exchange between the inside and the outside of the device is carried out through the first air vent 31, the waterproof breathable membrane 4, and the second air vent 51 to achieve internal and external pressure balance. When the internal pressure of the device rises sharply, the spring 23 is compressed under the action of the pressure. At this time, the combination of the top cover 5 and the air permeable seat 3 leaves the first sealing ring 16 to form a gap, and the internal gas can quickly flow out to the outside through the pressure relief hole 21 and the above gap, so that the internal and external pressures of the device quickly reach a balanced state, avoiding explosion and ensuring the safety of the device.

[0051] In the description of the present utility model, it should be understood that the indicated orientation or positional relationship is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0052] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0053] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0054] Although the description of the present utility model is carried out in combination with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included within the scope of the appended claims.

Claims

1. A new type of explosion-proof pressure relief valve, characterized in that, Comprising: A valve body, the valve body includes a valve head, a connecting body disposed at the lower end of the valve head, the valve head is provided with a concave portion, a through hole is provided on the bottom surface of the concave portion, and the through hole penetrates to the bottom surface of the connecting body; A breathable pressure relief component, the breathable pressure relief component includes a tubular member disposed in the through hole, a breathable seat connected to the upper end of the tubular member, a waterproof breathable membrane disposed on the breathable seat, and a top cover connected to the breathable seat. There is a gap between the top cover and the inner wall of the concave portion, and there is a gap between the outer wall of the tubular member and the inner wall of the through hole. The tubular member is provided with pressure relief holes, a spring is sleeved on the tubular member, and a flange is provided on the outer wall of the lower end of the tubular member. One end of the spring is connected to the flange, and the other end of the spring is connected to the inner wall of the through hole. The flange is in clearance fit with the inner wall of the through hole.

2. The novel explosion-proof pressure relief valve according to claim 1, characterized in that, The breathable seat is provided with a first breathable hole corresponding to the position of the tubular member.

3. The novel explosion-proof pressure relief valve according to claim 2, wherein, The connection between the breathable seat and the tubular member is a threaded connection.

4. The novel explosion-proof pressure relief valve according to claim 1, characterized in that, A plurality of second breathable holes are provided on the side wall of the top cover.

5. The novel explosion-proof pressure relief valve according to claim 1, characterized in that, A ferromagnetic metal member is connected to the inner bottom surface of the top cover.

6. The novel explosion-proof pressure relief valve according to claim 1, characterized in that, The concave portion is provided with a first installation groove, and a first sealing ring is provided in the first installation groove.

7. The novel explosion-proof pressure relief valve according to claim 1, characterized in that, The bottom surface of the valve body is provided with a second installation groove, and a second sealing ring is provided in the second installation groove.

8. The novel explosion-proof pressure relief valve according to claim 1, characterized in that, Three pressure relief holes are uniformly provided with respect to the axis of the tubular member.

9. The novel explosion-proof pressure relief valve according to claim 1, characterized in that, A limiting platform is provided on the inner wall of the through hole, and the end of the spring is connected to the bottom surface of the limiting platform.

10. The novel explosion-proof pressure relief valve according to claim 1, characterized in that, A convex platform is provided on the edge of the top surface of the breathable seat, and the waterproof breathable membrane is connected to the convex platform.

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