Explosion-proof valve

Abstract

The utility model discloses an explosion-proof valve which comprises a hollow valve body and a piston rod, the piston rod comprises a solid rod body and a fixing piece, one end of the hollow valve body is a connecting end, the other end of the hollow valve body is an inserting end, a groove used for containing the fixing piece is formed in the face, away from the connecting end, of the inserting end, and a partition plate is arranged between the connecting end and the inserting end. A plurality of through holes and a middle hole for the solid rod body to penetrate through are formed in the surface of the partition plate, a plurality of air holes are formed in the surface of the fixing piece, the fixing piece is clamped and embedded in the groove, the air holes in the surface of the fixing piece are correspondingly communicated with the through holes in the surface of the partition plate, the periphery of the solid rod body is sleeved with an elastic piece, and the solid rod body is fixedly connected with the fixing piece after penetrating through the middle hole; a film groove is formed in the surface of the fixing piece, and a waterproof breathable film is arranged in the film groove. The utility model has the advantages that the plurality of vent holes are formed in the surface of the fixing sheet, are positioned on the peripheral side of the surface of the fixing sheet and are communicated with the through holes of the partition plate, so that gas is dispersed and discharged, and the exhaust is smooth.

Description

Technical Field

[0001] The utility model relates to the technical field of valve products, in particular to an explosion-proof valve. Background Art

[0002] The development of science and technology has not only improved the quality of human life, but has also gradually integrated into human life, becoming increasingly inseparable and closely related. In order to further improve product performance and safety, the development of science and technology has gradually moved towards precision, and these precision equipment, in order to protect the equipment body, will be equipped with a shell cover to enhance the protection effect. However, the equipment body after the shell cover is added often forms a relatively closed space. If the gas generated during the working process is not fully dissipated, it is very easy to generate high pressure in the closed environment and damage the equipment, and even cause an explosion and safety accident.

[0003] Referring to patent CN 206159577 U, the existing explosion-proof valve includes a hollow valve body, a piston rod and a spring, and the piston rod includes a hollow rod body and a fixing plate. Since the fixing plate surface of the existing explosion-proof valve has only one vent hole connected to the hollow rod body, and the vent hole is located at the center of the fixing plate surface, the exhaust of the existing explosion-proof valve is too concentrated, and the exhaust is not smooth, which needs to be improved. Utility Model Content

[0004] The utility model aims to provide an explosion-proof valve with relatively dispersed and smooth exhaust.

[0005] The utility model provides an explosion-proof valve, comprising a hollow valve body and a piston rod, wherein the piston rod comprises a solid rod body and a fixing plate, wherein one end of the hollow valve body is a connecting end, and the other end is a plug-in end, wherein a groove for accommodating the fixing plate is formed on a side of the plug-in end away from the connecting end, and a partition is arranged between the connecting end and the plug-in end;

[0006] The surface of the partition is provided with a plurality of through holes and a middle hole for the solid rod to pass through, the surface of the fixing plate is provided with a plurality of air holes, the fixing plate is embedded in the groove, the air holes on the surface of the fixing plate are correspondingly connected with the through holes on the surface of the partition, an elastic member is sleeved on the periphery of the solid rod, and the solid rod is connected and fixed with the fixing plate after passing through the middle hole;

[0007] A membrane groove is formed on the surface of the fixing plate, and a waterproof and breathable membrane is arranged in the membrane groove.

[0008] Preferably, a first waterproof ring is provided on the outer periphery of the connection end, and the first waterproof ring improves the air tightness between the connection end and the device shell cover.

[0009] Preferably, a second waterproof ring is provided between the plug-in end and the fixing plate, and the second waterproof ring improves the air tightness between the plug-in end and the fixing plate.

[0010] Preferably, a first receiving groove is provided on the surface of the plug-in end facing the connecting end, and the first waterproof ring is embedded in the first receiving groove; a second receiving groove is provided on the surface of the plug-in end facing away from the connecting end, and the second waterproof ring is embedded in the second receiving groove.

[0011] Preferably, the fixing cover on the fixing plate is provided with a shielding plate, the bottom end of the shielding plate is provided with a pressure ring, the pressure ring is tightly pressed against the waterproof breathable membrane, a plurality of breathable grooves are opened along the periphery of the membrane groove, and the membrane groove is connected with the outside through the breathable grooves.

[0012] Preferably, the elastic member is configured as a spring.

[0013] Preferably, a screw hole is formed at one end of the solid rod body close to the fixing plate, a screw rod is fixedly provided at the bottom end of the fixing plate, and the screw rod is screwed into the screw hole of the solid rod body.

[0014] Preferably, the plug end is configured as a regular octagon.

[0015] Preferably, the inner side wall of the groove is configured as a curved surface.

[0016] Preferably, a positioning portion is formed at one end of the solid rod body away from the fixing plate, a positioning groove is formed at the bottom end of the partition, one end of the spring is sleeved on the periphery of the positioning portion, and the other end of the spring is embedded in the positioning groove.

[0017] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0018] 1. There are several air holes on the surface of the fixing plate, which are located on the peripheral side of the surface of the fixing plate and are connected with the through holes of the partition plate, so that the gas is dispersed and discharged, which has the advantage of smooth exhaust.

[0019] 2. A first waterproof ring is provided between the plug-in end and the device shell, and a second waterproof ring is provided between the connection end and the fixing plate, thereby making the explosion-proof valve have good sealing performance.

[0020] 3. A positioning portion is provided at one end of the solid rod body away from the fixing plate, and a positioning groove is provided at the bottom end of the partition. One end of the spring is sleeved on the periphery of the positioning portion, and the other end of the spring is embedded in the positioning groove, which helps the spring to maintain a stable position during compression and resetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of an explosion of an explosion-proof valve in an embodiment;

[0022] Figure 2 This is a front view of an explosion-proof valve in an embodiment;

[0023] Figure 3 is a top view of an explosion-proof valve in an embodiment;

[0024] Figure 4 This is a schematic diagram of the overall structure of an explosion-proof valve in an embodiment;

[0025] Figure 5 2 is a schematic diagram of the structure of a hollow valve body in an embodiment;

[0026] Figure 6 is a cross-sectional view of an explosion-proof valve in an embodiment;

[0027] Figure 7 is a cross-sectional view of a solid rod body of an embodiment;

[0028] Figure 8 is a schematic structural diagram of a fixing plate of an embodiment;

[0029] Fig. 9 is a cross-sectional view of a fixing sheet and a waterproof breathable membrane of an embodiment;

[0030] Fig.10 is a cross-sectional view of a hollow valve body in an embodiment;

[0031] Fig.11 1 is a schematic diagram of exhaust when the air pressure in the connection end of the embodiment is relatively low;

[0032] Fig.12 It is a schematic diagram of exhaust when the air pressure in the connection end of the embodiment is relatively high.

[0033] Figure numerals: 1. hollow valve body; 11. connecting end; 12. plug-in end; 121. first accommodating groove; 122. second accommodating groove; 13. partition; 131. positioning groove; 132. center hole; 133. through hole; 14. groove; 2. piston rod; 21. solid rod body; 211. screw hole; 212. positioning part; 22. fixing plate; 221. screw rod; 222. air hole; 223. membrane groove; 224. air groove; 3. spring; 4. waterproof and breathable membrane; 5. shielding plate; 51. pressure ring; 6. first waterproof ring; 7. second waterproof ring. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-12 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Reference Figure 1-Figure 6, an explosion-proof valve, comprising a hollow valve body 1, a piston rod 2 and an elastic member, wherein the elastic member is configured as a spring 3, the hollow valve body 1 comprising a connecting end 11, a plug end 12 and a partition 13, the partition 13 being located at the connection between the connecting end 11 and the plug end 12, so that a groove 14 is formed between the plug end 12 and the partition 13, a central hole 132 is provided at the center of the surface of the partition 13, and a plurality of through holes 133 for gas circulation are provided on the surface of the partition 13 along the periphery of the central hole 132. The connecting end 11 is used to connect with the device shell cover, and for this purpose, a thread is provided on the outer surface of the connecting end 11. When installing, the connecting end 11 of the explosion-proof valve is screwed and fixed to the device shell cover, and the plug end 12 is held and rotated to screw the connecting end 11 and the device shell cover together, which is not only firmly connected but also has the advantage of being easy to disassemble. The plug end 12 is configured to have a regular octagonal horizontal cross section, so that when installing the explosion-proof valve, it is convenient to manually screw the explosion-proof valve.

[0036] Reference Figure 1 , Figure 5 and Figure 7 The piston rod 2 includes a solid rod body 21 and a fixing plate 22, wherein the size of the fixing plate 22 is smaller than the size of the groove 14. In order to install and fix the solid rod body 21 and the fixing plate 22, a screw hole 211 is provided at one end of the solid rod body 21, and a screw rod 221 is provided at the bottom end of the fixing plate 22. The spring 3 is sleeved on the periphery of the solid rod body 21, and the solid rod body 21 is inserted from the connecting end 11 of the hollow valve body 1 so that the solid rod body 21 passes through the middle hole 132. Finally, the screw rod 221 at the bottom end of the fixing plate 22 is screwed into the screw hole 211 on the surface of the solid rod body 21, so as to connect and fix the solid rod body 21 and the fixing plate 22. After installation, the spring 3 is located between the partition 13 and the solid rod body 21, and the fixing plate 22 is embedded in the groove 14 of the plug end 12. In order to keep the spring 3 firmly positioned on the periphery of the solid rod 21, a positioning portion 212 is provided at one end of the solid rod 21 away from the fixing plate 22, and a positioning groove 131 is provided at the bottom end of the partition 13. One end of the spring 3 is sleeved on the periphery of the positioning portion 212, and the other end of the spring 3 is embedded in the positioning groove 131, so as to prevent the spring 3 from being displaced during compression or resetting.

[0037] Reference Figure 1 , Figure 8 and Fig. 9, and a plurality of vent holes 222 are provided on the surface of the fixing plate 22. After the fixing plate 22 is embedded in the groove 14 of the hollow valve body 1, the plurality of vent holes 222 on the surface of the fixing plate 22 correspond to the plurality of through holes 133 on the surface of the partition 13, so that the gas in the hollow valve body 1 can be discharged through the through holes 133 on the surface of the partition 13 and the vent holes 222 on the surface of the fixing plate 22 in sequence. A membrane groove 223 is provided on the surface of the fixing plate 22 away from the partition 13. In order to prevent moisture and ash from entering the hollow valve body 1, a waterproof and breathable membrane 4 is provided on the surface of the fixing plate 22. The shape and size of the waterproof and breathable membrane 4 correspond to the shape and size of the membrane groove 223, so that the waterproof and breathable membrane 4 is embedded in the membrane groove 223.

[0038] In order to prevent the waterproof breathable membrane 4 from falling out of the membrane groove 223 on the surface of the fixed sheet 22, a shielding sheet 5 is fixedly arranged on the upper part of the fixed sheet 22, and a pressing ring 51 is fixedly arranged at the bottom end of the shielding sheet 5, and the diameter of the shielding sheet 5 is set to be larger than the diameter of the membrane groove 223 and smaller than the diameter of the groove 14. The membrane groove 223 on the surface of the fixed sheet 22 is closed by the shielding sheet 5, and the pressing ring 51 abuts against the waterproof breathable membrane 4, so that the waterproof breathable membrane 4 is kept in a fixed position in the membrane groove 223, and a gap is left between the fixed sheet 22 and the shielding sheet 5 and the inner side wall of the plug end 12. In order to allow the gas that passes through the through hole 133 and the air hole 222 and enters the membrane groove 223 to be discharged smoothly, a plurality of air-permeable grooves 224 are provided along the peripheral side of the fixing plate 22. The plurality of air-permeable grooves 224 are evenly distributed along the peripheral side of the fixing plate 22. The plurality of air-permeable grooves 224 make the membrane groove 223 on the surface of the fixing plate 22 communicate with the outside world, thereby allowing the gas that enters the membrane groove 223 to pass through the air-permeable grooves 224 and be discharged from the membrane groove 223. The inner side wall of the plug end 12 is set to an arc shape. When the gas pressure generated in the hollow valve body 1 is relatively large, the gas pushes the fixing plate 22 away from the partition 13. The inner side wall of the plug end 12 is set to an arc shape, so that the gas is easily discharged along the inner side wall of the plug end 12.

[0039] Reference Figure 6 and Fig.10 In order to make the explosion-proof valve have a good waterproof effect, a first receiving groove 121 is provided on the side of the plug end 12 facing the connection end 11. The first receiving groove 121 surrounds the peripheral side of the connection end 11, and a first waterproof ring 6 is sleeved on the outer periphery of the connection end 11. The first waterproof ring 6 is embedded in the first receiving groove 121, so that the first waterproof ring 6 is partially hidden in the first receiving groove 121. When the connection end 11 of the explosion-proof valve is threadedly connected to the device shell, the device shell and the first waterproof ring 6 are tightly pressed. The setting of the first waterproof ring 6 blocks the gap between the explosion-proof valve and the device shell, preventing water from passing through the gap between the explosion-proof valve and the device shell into the hollow valve body 1.

[0040] A second receiving groove 122 is provided on the side of the plug end 12 facing away from the connection end 11. The second receiving groove 122 is located in the groove 14 formed between the plug end 12 and the partition 13. A second waterproof ring 7 is provided on the plug end 12. The second waterproof ring 7 is inserted into the second receiving groove 122 on the plug end 12, so that the second waterproof ring 7 is partially hidden in the second receiving groove 122 and partially protrudes from the surface of the plug end 12. After the solid rod body 21 is threadedly connected with the fixing plate 22, the fixing plate 22 abuts against the second waterproof ring 7. The second waterproof ring 7 is provided to block the gap between the fixing plate 22 and the plug end 12 to prevent water from passing through the gap between the fixing plate 22 and the plug end 12 and entering the hollow valve body 1.

[0041] Reference Fig.11 and Fig.12 The specific implementation principle of the embodiment of the present application is as follows: when the explosion-proof valve is used, when the gas generated in the device housing is small, the gas enters the connection end 11 of the explosion-proof valve, and passes through the through hole 133 on the surface of the partition 13 and the air hole 222 on the surface of the fixed plate 22 in sequence, and then passes through the waterproof breathable membrane 4 to enter the membrane groove 223 of the fixed plate 22. After the gas passes through a number of air grooves 224 on the fixed plate 22, it is discharged along the gap between the shielding plate 5 and the plug-in end 12. The air holes 222 on the fixed plate 22 are arranged on the surface circumference of the fixed plate 22 and correspond to the through holes 133 on the surface of the partition 13, so that the exhaust of the explosion-proof valve is relatively dispersed, reducing the probability that the explosion-proof valve cannot be exhausted smoothly due to blockage.

[0042] When there is a lot of gas generated in the housing of the device, the gas pressure formed by the gas entering the connection end 11 is relatively high, and the gas only passes through the through hole 133 and the vent hole 222, making it difficult to be discharged from the connection end 11 in time. At this time, due to the high air pressure in the connection end 11, the piston rod 2 and the shielding sheet 5 are driven to move in the direction of squeezing the spring 3, and the spring 3 is compressed between the solid rod body 21 and the partition 13, and the fixing sheet 22 and the second waterproof ring 7 on the plug end 12 are separated from each other. At this time, after the gas passes through the through hole 133, it can continue to pass through the vent hole 222, the waterproof breathable membrane 4 and the vent groove 224 in sequence to be discharged; at the same time, it can also be discharged from the gap between the fixing sheet 22 and the plug end 12. As a result, a large amount of gas entering the connection end 11 can be quickly discharged from the explosion-proof valve, which improves the exhaust efficiency of the explosion-proof valve. When the gas is discharged and the air pressure in the connection end 11 is relatively low, the piston rod 2 closes the fixing sheet 22 and the plug end 12 under the action of the elastic force of the spring 3.

[0043] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. An explosion-proof valve, characterized in that: It comprises a hollow valve body and a piston rod, wherein the piston rod comprises a solid rod body and a fixing plate, one end of the hollow valve body is a connecting end, and the other end is a plug-in end, a groove for accommodating the fixing plate is formed on a side of the plug-in end away from the connecting end, and a partition is provided between the connecting end and the plug-in end; The surface of the partition is provided with a plurality of through holes and a middle hole for the solid rod to pass through, the surface of the fixing plate is provided with a plurality of air holes, the fixing plate is embedded in the groove, the air holes on the surface of the fixing plate are correspondingly connected with the through holes on the surface of the partition, an elastic member is sleeved on the periphery of the solid rod, and the solid rod is connected and fixed with the fixing plate after passing through the middle hole; A membrane groove is formed on the surface of the fixing plate, and a waterproof and breathable membrane is arranged in the membrane groove.

2. An explosion-proof valve according to claim 1, characterized in that: The outer periphery of the connection end is provided with a first waterproof ring, and the first waterproof ring improves the air tightness between the connection end and the device shell cover.

3. An explosion-proof valve according to claim 2, characterized in that: A second waterproof ring is provided between the plug-in end and the fixing plate, and the second waterproof ring improves the air tightness between the plug-in end and the fixing plate.

4. An explosion-proof valve according to claim 3, characterized in that: A first receiving groove is formed on the surface of the plug end facing the connection end, and the first waterproof ring is embedded in the first receiving groove; a second receiving groove is formed on the surface of the plug end facing away from the connection end, and the second waterproof ring is embedded in the second receiving groove.

5. The explosion-proof valve according to claim 3, characterized in that: The fixing cover on the fixing plate is provided with a shielding plate, the bottom end of the shielding plate is provided with a pressure ring, the pressure ring is tightly pressed against the waterproof breathable membrane, a plurality of breathable grooves are opened along the periphery of the membrane groove, and the membrane groove is connected with the outside through the breathable grooves.

6. The explosion-proof valve according to claim 1, characterized in that: The elastic member is configured as a spring.

7. The explosion-proof valve according to claim 1, characterized in that: A screw hole is provided at one end of the solid rod body close to the fixing plate, a screw rod is fixedly arranged at the bottom end of the fixing plate, and the screw rod is screwed into the screw hole of the solid rod body.

8. The explosion-proof valve according to claim 1, characterized in that: The plug-in end is arranged in a regular octagon.

9. The explosion-proof valve according to claim 1, characterized in that: The inner side wall of the groove is configured as a curved surface.

10. The explosion-proof valve according to claim 6, characterized in that: A positioning portion is formed at one end of the solid rod body away from the fixing plate, a positioning groove is formed at the bottom end of the partition plate, one end of the spring is sleeved on the periphery of the positioning portion, and the other end of the spring is embedded in the positioning groove.

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