Safety explosion-proof device for underground coal mine
By designing an explosion-proof device that can trigger material and gas replenishment, the problem of existing underground safety explosion-proof devices in coal mines being unusable for secondary use has been solved, achieving effective blocking in the event of a secondary explosion and improving the effectiveness and convenience of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-03-13
AI Technical Summary
Existing explosion-proof safety devices in coal mines are for single use only and cannot block the propagation of blast waves again in the event of a secondary explosion, making them inconvenient to use.
An explosion-proof device capable of triggering material and gas replenishment was designed, comprising a material storage bin, a gas storage bin, a gas replenishment tank, and a material replenishment tank. By separating and resetting the sealing seat and the sealing ring, the extinguishing medium can be sprayed again, achieving a secondary triggering effect.
It enables the replenishment of materials and gas after the first use, ensuring that the propagation of the explosion wave can be blocked again in the event of a secondary explosion, thus improving the effectiveness and convenience of use.
Smart Images
Figure CN223991787U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coal mine safety equipment technology, specifically relating to an explosion-proof safety device for underground coal mines. Background Technology
[0002] The underground working environment of coal mines is characterized by gas accumulation, suspended coal dust, and confined space. Explosion-proof devices are usually installed in coal mines. These devices are important equipment used in coal mines to effectively curb the spread of explosion accidents and ensure the safety of personnel and equipment. Their core function is to quickly block the propagation of the explosion wave through physical or chemical means when an explosion occurs underground, thereby minimizing losses and personnel injuries.
[0003] However, current explosion-proof safety devices for underground coal mines are usually for single use only and cannot be reused. When a secondary explosion occurs in an underground coal mine, the propagation of the explosion wave cannot be blocked again, causing considerable inconvenience to users. Therefore, the applicant proposes an explosion-proof safety device for underground coal mines to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a safety explosion-proof device for underground coal mines, which can be replenished with materials and gas after being triggered, so that it can have a secondary triggering effect. In the event of a secondary explosion in an underground coal mine, it can block the propagation of the explosion wave again, effectively improving the performance.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An explosion-proof safety device for underground coal mines, comprising:
[0007] Explosion-proof mechanism and mounting mechanism assembled on top of the explosion-proof mechanism;
[0008] The explosion-proof mechanism includes a storage bin, a gas storage bin fixedly installed on one side of the storage bin, a movable rod installed through the interior of the gas storage bin, a sealing seat extending into the gas storage bin fixedly installed at one end of the movable rod, a sealing ring corresponding to the sealing seat fixedly installed on the inner wall of the storage bin, a receiving plate fixedly installed at the other end of the movable rod, a gas replenishment tank fixedly installed on the top of the gas storage bin, and a material replenishment tank fixedly installed on the top of the storage bin.
[0009] Preferably, the installation mechanism includes a fixing rod fixedly installed on the top of the explosion-proof mechanism, and a mounting bracket is fixedly installed on the top of the fixing rod, with fixing holes provided on the mounting bracket.
[0010] Preferably, a spray head is fixedly installed on one side of the storage bin, the spray head and the storage bin are interconnected, and a push rod is fixedly installed between the sealing seat and the moving rod.
[0011] Preferably, the movable rod is provided with an air inlet and an air outlet, and the air storage chamber is provided with an air guide port corresponding to the air inlet.
[0012] Preferably, a replenishment pipe is connected between the replenishment tank and the gas storage chamber, and between the replenishment tank and the material storage chamber, and a one-way valve is provided on the replenishment pipe.
[0013] Preferably, a sliding sleeve is fixedly installed on one side of the gas storage chamber, and the moving rod is slidably installed through the sliding sleeve.
[0014] Preferably, a return spring is fixedly installed between the sliding sleeve and the moving rod, and the return spring is sleeved around the periphery of the moving rod.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] (1) This utility model is equipped with an explosion-proof mechanism, which can re-fit the sealing seat and sealing ring after the first triggering and use, so that the storage bin can be sealed. The fire extinguishing medium can be introduced into the storage bin through the replenishment tank for replenishment operation. At the same time, the gas replenishment tank can replenish the gas in the storage bin. In the event of a secondary explosion, the gas in the storage bin can be used to spray out the fire extinguishing medium in the storage bin, so that it can have a secondary triggering effect. It can block the propagation of the explosion wave again when a secondary explosion occurs in the coal mine, effectively improving the use effect.
[0017] (2) This utility model has a push rod between the sealing seat and the moving rod. When the shock wave of the explosion pushes the receiving plate, the moving rod can be moved. The push rod can push the sealing seat and the sealing ring to separate, so that the storage bin and the spray head can be connected. The high-pressure air in the gas storage bin can enter the storage bin to spray out the fire extinguishing medium. It can trigger the fire extinguishing operation in a short time without the need for sealing with a film, which brings more convenience to the user. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the installation mechanism structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the explosion-proof mechanism of this utility model;
[0021] Figure 4 This is a cross-sectional view of the storage silo of this utility model;
[0022] Figure 5 This is a schematic diagram of the gas storage chamber structure of this utility model;
[0023] In the diagram: 1. Installation mechanism; 11. Mounting frame; 12. Fixing hole; 13. Fixing rod; 2. Explosion-proof mechanism; 21. Storage bin; 22. Spray head; 23. Gas storage bin; 24. Moving rod; 25. Sliding sleeve; 26. Receiving tray; 27. Gas supply tank; 28. Supply pipe; 29. One-way valve; 210. Supply tank; 211. Return spring; 212. Sealing ring; 213. Push rod; 214. Sealing seat; 215. Air inlet; 216. Air outlet; 217. Air guide port. Detailed Implementation
[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Example 1:
[0028] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a safety explosion-proof device for underground coal mines includes:
[0029] Explosion-proof mechanism 2 and mounting mechanism 1 mounted on top of explosion-proof mechanism 2;
[0030] The explosion-proof mechanism 2 includes a storage bin 21, a gas storage bin 23 fixedly installed on one side of the storage bin 21, a moving rod 24 installed through the interior of the gas storage bin 23, a sealing seat 214 extending into the gas storage bin 23 fixedly installed at one end of the moving rod 24, a sealing ring 212 corresponding to the sealing seat 214 fixedly installed on the inner wall of the storage bin 21, a receiving plate 26 fixedly installed at the other end of the moving rod 24, a gas replenishment tank 27 fixedly installed on the top of the gas storage bin 23, and a material replenishment tank 210 fixedly installed on the top of the storage bin 21.
[0031] As can be seen from the above, when in use, the explosion-proof mechanism 2 is fixed to the roof of the underground roadway of the coal mine using the installation mechanism 1. When an explosion occurs, the shock wave generated by the explosion can be transmitted to the receiving plate 26, which can generate a thrust on the receiving plate 26, so that the receiving plate 26 can push the moving rod 24 to move into the storage bin 21. This can drive the sealing seat 214 to separate from the sealing ring 212, allowing the high-pressure air in the gas storage bin 23 to be introduced into the storage bin 21. This can facilitate the spraying of the extinguishing medium in the storage bin 21, so that the extinguishing medium can form a extinguishing powder mist area in the underground roadway of the coal mine, which can effectively block the spread of flames.
[0032] After use, the moving rod 24 can be reset, which can cause the sealing seat 214 to fit with the sealing ring 212, and re-seal the storage bin 21. The fire extinguishing medium can be introduced into the storage bin 21 through the replenishment tank 210 for replenishment operation. At the same time, the gas replenishment tank 27 can replenish the gas in the gas storage bin 23. In the event of a secondary explosion, it can have a secondary triggering effect. In the event of a secondary explosion in the coal mine, it can block the propagation of the explosion wave again, effectively improving the use effect.
[0033] Depend on Figure 2 It is known that the installation mechanism 1 includes a fixing rod 13 fixedly installed on the top of the explosion-proof mechanism 2, and a mounting bracket 11 fixedly installed on the top of the fixing rod 13, and a fixing hole 12 is provided on the mounting bracket 11.
[0034] As can be seen from the above, by using bolts and fixing holes 12, the mounting bracket 11 can be easily fixed to the top plate of the underground roadway in the coal mine, and the explosion-proof mechanism 2 can be suspended at the top of the roadway by using fixing rod 13, without affecting the normal passage of personnel in the roadway.
[0035] For details, please refer to Figure 4As shown, a spray head 22 is fixedly installed on one side of the storage bin 21, and the spray head 22 and the storage bin 21 are interconnected. A push rod 213 is fixedly installed between the sealing seat 214 and the moving rod 24.
[0036] As can be seen from the above, when the moving rod 24 is moved, the push rod 213 can be used to push the sealing seat 214 and the sealing ring 212 to separate, which can make the storage bin 21 and the nozzle 22 instantly connected, so that the high-pressure air in the gas storage bin 23 can enter the storage bin 21 to spray out the extinguishing medium. The extinguishing operation can be triggered in a short time without the need for sealing with a membrane. The nozzle 22 is funnel-shaped, which can make the extinguishing medium spread rapidly when it is sprayed out, which brings more convenience to the use.
[0037] For details, please refer to Figure 5 As shown, the moving rod 24 is provided with an air inlet 215 and an air outlet 216, and the air storage chamber 23 is provided with an air guide port 217 corresponding to the air inlet 215.
[0038] As can be seen from the above, when the moving rod 24 is moved by the shock wave of the explosion, the air inlet 215 can be aligned with the air guide 217, so that the high-pressure air in the air storage chamber 23 can be introduced into the cavity in the moving rod 24 through the air inlet 215. When the moving rod 24 extends into the storage chamber 21, the air outlet 216 can enter the storage chamber 21 simultaneously, so that the high-pressure air can enter the storage chamber 21 through the air outlet 216, which can facilitate the spraying of the fire extinguishing medium.
[0039] Example 2:
[0040] refer to Figure 3 and Figure 4 As shown, a feeding pipe 28 is connected between the gas supply tank 27 and the gas storage chamber 23, and between the feeding tank 210 and the storage chamber 21. A one-way valve 29 is installed on the feeding pipe 28.
[0041] As can be seen from the above, the high-pressure air in the air supply tank 27 can be easily introduced into the air storage chamber 23 for air supply operation through the supply pipe 28, and the extinguishing medium in the supply tank 210 can be introduced into the material storage chamber 21 for material supply operation. The one-way valve 29 can effectively prevent the backflow of gas in the air storage chamber 23 and the backflow of extinguishing medium in the material storage chamber 21, which facilitates the air supply and material supply operation.
[0042] refer to Figure 3 As shown, a sliding sleeve 25 is fixedly installed on one side of the gas storage chamber 23, and a moving rod 24 is slidably installed through the sliding sleeve 25.
[0043] As can be seen from the above, the sliding sleeve 25 can conveniently support the moving rod 24, so that the moving rod 24 can perform stable horizontal sliding operation and is not prone to shaking.
[0044] refer to Figure 5 As shown, a return spring 211 is fixedly installed between the sliding sleeve 25 and the moving rod 24, and the return spring 211 is sleeved on the periphery of the moving rod 24.
[0045] As can be seen from the above, the return spring 211 can apply a pushing force to the moving rod 24. After the triggering is completed, the moving rod 24 can be reset by the pushing force of the return spring 211, so that the moving rod 24 can have a secondary triggering state.
[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. 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A flameproof apparatus for use in a coal mine according to claim 1, wherein: 3. A flameproof apparatus for use in a coal mine according to claim 1, wherein: 4. A flameproof apparatus for use in a coal mine according to claim 1, wherein: 5. A flameproof apparatus for use in a coal mine according to claim 1, wherein: 6. A flameproof apparatus for use in a coal mine according to claim 1, wherein: 7. A flameproof apparatus for use in a coal mine according to claim 6 wherein: