Emergency refuge cabin for safe mining of mine

Abstract

The invention belongs to the technical field of mine refuge equipment, and particularly relates to a mine safety mining emergency refuge cabin which comprises a cabin body, the cabin body is formed by splicing a head cabin, a tail cabin and a middle cabin through bolts and nuts, an axial flow fan is arranged in the tail cabin and used for ventilation of the cabin body, and a sealing assembly is assembled on the axial flow fan and comprises a sealing plate. The bottom end of the sealing plate is connected with a second sealing ring, an inner groove is formed in the middle of the sealing plate, and a piston rod is assembled in the inner groove and can axially slide along the inner groove. According to the emergency refuge cabin for safe mining of the mine, the split structure design of the cabin body has transportation convenience and space flexibility, in the transportation link, the split structure is convenient to disassemble and carry, and the transportation difficulty is reduced; in the using process, the number of the middle cabins can be flexibly increased or decreased according to the personnel number and refuge space requirements in different mine mining scenes, the overall size of the cabin body is accurately adjusted, and the universality and applicability of the equipment in the complex mine environment are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine refuge equipment, in particular to a mine safety emergency refuge chamber. BACKGROUND

[0002] The mine safety emergency refuge chamber is a safety facility specially for mine underground workers in the event of a sudden safety accident such as gas explosion, fire, water leakage, etc. It helps personnel resist external disaster environment and saves valuable time for rescue, and is an important part of the mine safety protection system.

[0003] At present, most of the existing refuge chambers adopt an integrated structure, which cannot be flexibly disassembled and reassembled like a split type design, which leads to the need for large equipment to assist transportation, increasing transportation cost and difficulty. At the same time, when facing different scale of mine exploitation and different number of refuge personnel, the chamber body space size cannot be adjusted, the equipment versatility is poor, and it is difficult to meet the diversified actual needs. In view of this, we propose a mine safety emergency refuge chamber. SUMMARY

[0004] The main purpose of the present application is to provide a mine safety emergency refuge chamber, which can solve the problems raised in the background art.

[0005] To achieve the above purpose, the mine safety emergency refuge chamber provided by the present application comprises a chamber body, which is composed of a head chamber, a tail chamber and an intermediate chamber by bolt and nut splicing. An axial flow fan is arranged in the tail chamber for ventilation of the chamber body. A sealing assembly is assembled on the axial flow fan, which comprises:

[0006] A sealing plate is connected with a sealing ring two at the bottom end, an inner groove is formed in the middle part of the sealing plate, a piston rod is assembled in the inner groove and can slide axially in the inner groove, a sealing ring three is embedded in the side wall of the sealing plate, an inner cavity is formed in the sealing ring three, and the inner cavity is communicated with the inner groove to form a gas pressure linkage sealing structure.

[0007] A rotating rod is penetrated through the moving plate and fixedly connected with the moving plate, an outer thread is arranged on the surface of the rotating rod, and a limiting block one and a limiting block two are fixedly arranged on the inner wall of the rotating rod to limit the axial movement range of the internal components.

[0008] A movement rod is penetrated through the rotating rod and rotationally connected with the rotating rod, a sliding groove is formed in the middle part of the movement rod, a sliding rod is penetrated through the sliding groove and forms a sliding fit, the sliding rod is penetrated through the sealing plate and rotationally connected with the sealing plate, a rotating disc is connected with the bottom end of the sliding rod, the rotating disc is provided with an arc-shaped groove, the arc-shaped groove is in sliding fit with the top end of the piston rod, and the piston rod is driven to reciprocate in the inner groove through the rotation of the rotating disc.

[0009] Preferably, the bottom end of the movement rod penetrates the sleeve body and is fixedly connected with the sleeve body, and the sleeve body is provided with a clamping groove.

[0010] Preferably, the outer wall of the moving plate is connected with a base, the base is internally provided with a clamping rod, and the clamping rod is provided with a through groove.

[0011] Preferably, the outer wall of the sealing plate is connected with a guide rod, the guide rod penetrates the moving plate and is slidably connected with the moving plate, and a spring is arranged between the sealing plate and the moving plate.

[0012] Preferably, the inner wall of the axial flow fan cylinder body is provided with a dustproof net and a sealing ring one, and the outer wall of the axial flow fan cylinder body is connected with a shaft body and a limiting rod.

[0013] Preferably, the outer wall of the axial flow fan cylinder body is provided with a rotating frame, the bottom end of the rotating frame is provided with a sliding groove, and the sliding groove is sleeved with the shaft body, so that the rotating frame can rotate around the shaft body.

[0014] Preferably, the side wall of the rotating frame is provided with a clamping jaw, the position of the rotating frame can be fixed by clamping with the limiting rod, and the inner wall of the rotating frame is provided with an internal thread, which cooperates with an external thread of the rotating rod.

[0015] Preferably, the outer wall of the sealing plate is provided with an inclined block, the top end of the inclined block is aligned with the through groove of the clamping rod and forms a matching structure.

[0016] Preferably, the splicing end of the tail cabin and the end face of the intermediate cabin are both provided with a recess, and a sealing strip is arranged in the recess, the splicing gap can be filled by elastic deformation of the sealing strip, the sealing performance of the cabin body connection part can be effectively improved, and gas infiltration can be prevented.

[0017] Preferably, the outer wall of the splicing end of the head cabin and the outer wall of the end face of the intermediate cabin are both fixedly connected with a plug rod and a sealing pad, the plug rod can be inserted into the corresponding recess to realize mechanical positioning and connection, and the sealing pad can fill the splicing gap by extrusion to enhance the sealing performance of the cabin body.

[0018] The application provides a mine safety mining emergency refuge cabin.

[0019] (1) The mine safety mining emergency refuge cabin has the split type structure design, has the transportation convenience and the space flexibility, in the transportation link, the split type structure is convenient for disassembling and carrying, reduces the transportation difficulty, in the use process, the number of intermediate cabins can be increased or decreased flexibly according to the number of personnel and the refuge space demand under different mine mining scenes, the overall volume of the cabin body can be accurately adjusted, and the universality and applicability of the equipment in the complex mine environment are greatly improved.

[0020] (2), the mine safety mining emergency refuge chamber, the refuge chamber body adopts the split splicing design of head cabin, tail cabin and middle cabin, through the three protection systems of "elastic filling of sealing strip + mechanical positioning of inserting rod + extrusion enhancement of sealing pad", the sealing performance of the cabin body connection is improved in all directions, when splicing, the sealing strip is elastically deformed to fill the gap under the extrusion of the inserting rod, and the sealing pad further enhances the sealing by extrusion, effectively prevents the infiltration of external toxic and harmful gas, and provides solid protection for the safety of personnel in the mine emergency refuge scene.

[0021] (3), the mine safety mining emergency refuge chamber, through rotating the movement rod to drive the piston rod to move, the sealing ring is tightly attached to the inner wall of the cylinder by three radial expansion, and the expansion pressure can be automatically adjusted according to the rotation amount. Whether it is normal ventilation condition or facing sudden dangerous environment, the sealing structure can ensure that the axial flow fan is effectively isolated from the outside when working, preventing toxic gas from entering the cabin through the ventilation system, and creating a safe air environment in the cabin.

[0022] (4), the mine safety mining emergency refuge chamber, when the sealing plate reaches the preset sealing position, the clever cooperation of the inclined block and the clamping rod makes the movement rod and the rotating rod clamped and released, avoiding excessive extrusion caused by misoperation or transmission failure, effectively protecting the axial flow fan cylinder and the sealing assembly. This design not only reduces the risk of equipment damage, but also significantly prolongs the service life of the key components of the refuge chamber, ensuring the reliability and stability of the emergency refuge chamber in long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the structure shown in the drawings.

[0024] Figure 1 It is a whole three-dimensional structure schematic diagram of the present application;

[0025] Figure 2 It is a three-dimensional structure schematic diagram of the tail cabin of the present application;

[0026] Figure 3 It is a structure schematic diagram of the butt joint structure of each cabin body of the present application;

[0027] Figure 4 It is a three-dimensional structure schematic diagram of the axial flow fan of the present application;

[0028] Figure 5 It is a three-dimensional structure schematic diagram of the axial flow fan of the present application;

[0029] Figure 6This is a schematic diagram of the three-dimensional cross-sectional structure of the sealing assembly of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the movable plate portion of the present invention;

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the rotating disk of the present invention;

[0032] Figure 9 For the present invention Figure 6 Schematic diagram of the structure of A in the middle;

[0033] Figure 10 For the present invention Figure 6 Schematic diagram of the structure of B.

[0034] Description of Figure Numbers:

[0035] 1. Cabin; 11. Groove; 12. Sealing strip; 13. Insert rod; 14. Sealing gasket; 2. Axial fan; 20. Sealing ring 1; 21. Shaft; 22. Limit rod; 23. Rotating frame; 24. Slide; 25. Claw; 31. Sealing plate; 310. Sealing ring 2; 311. Sealing ring 3; 312. Cavity; 313. Piston rod; 314. Oblique block; 32. Moving plate; 321. Base; 322. Clamping rod; 323. Through groove; 33. Rotating rod; 331. Limit block 1; 332. Limit block 2; 34. Moving rod; 341. Sleeve; 342. Clamping groove; 35. Sliding rod; 351. Rotating disk; 352. Arc groove.

[0036] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1-10The application provides a mine safety mining emergency refuge chamber, which comprises a chamber body 1, wherein the chamber body 1 is composed of a head chamber, a tail chamber and an intermediate chamber through bolt-nut splicing, recesses 11 are arranged on the splicing end of the tail chamber and the end surface of the intermediate chamber, sealing strips 12 are arranged in the recesses 11, the splicing gap is filled through the elastic deformation of the sealing strips 12, the sealing property of the connecting position of the chamber body 1 can be effectively improved, and gas infiltration is prevented, the outer wall of the splicing end of the head chamber and the outer wall of the end surface of the intermediate chamber are fixedly connected with inserting rods 13 and sealing pads 14, the inserting rods 13 can be inserted into the corresponding recesses 11, mechanical positioning and connection are realized, the sealing pads 14 fill the splicing gap through extrusion, and the sealing property of the chamber body 1 is enhanced, an axial flow fan 2 is arranged in the tail chamber and is used for ventilation of the chamber body 1, a dust screen and a sealing ring one 20 are arranged on the inner wall of the cylinder body of the axial flow fan 2, an axle body 21 and a limiting rod 22 are connected to the outer wall of the cylinder body of the axial flow fan 2, and a sealing assembly is assembled on the axial flow fan 2.

[0039] When the chamber body 1 is installed, the inserting rod 13 of the intermediate chamber is aligned with the recess 11 of the splicing end of the tail chamber, the intermediate chamber is pushed to make the inserting rod 13 completely inserted into the recess 11, in the process, the inserting rod 13 extrudes the sealing strip 12 in the recess 11, meanwhile, the outer wall of the tail chamber extrudes the sealing pad 14 of the outer wall of the intermediate chamber, the two fill the splicing gap through elastic deformation, and the sealing property of the chamber body 1 is improved, then the tail chamber and the intermediate chamber are fixed through bolts and nuts, the head chamber is installed, the above steps are repeated, the inserting rod 13 of the head chamber is aligned with the recess 11 of the intermediate chamber, the head chamber is pushed in, then the head chamber is sealed through the sealing pad 14 and the sealing strip 12, and finally the head chamber is fixed through bolts and nuts, the chamber body 1 adopts a split type design, which is convenient for transportation, the number of the intermediate chambers can be increased or decreased according to actual needs, and the overall volume of the chamber body 1 can be flexibly adjusted.

[0040] In the embodiment of the application, in order to enable the axial flow fan 2 to be sealed and prevent external toxic gas from entering the cabin 1, specifically, the sealing assembly comprises a sealing plate 31, the bottom end of the sealing plate 31 is connected with a sealing ring two 310, an inner groove is formed in the middle part of the sealing plate 31, a piston rod 313 is assembled in the inner groove and can slide axially along the inner groove, a sealing ring three 311 is embedded in the side wall of the sealing plate 31, a cavity 312 is formed in the sealing ring three 311, and the cavity 312 is communicated with the inner groove, thereby forming a gas pressure linkage sealing structure, a rotating rod 33 penetrates through a moving plate 32 and is fixedly connected with the moving plate 32, an outer thread is arranged on the surface of the rotating rod 33, a limiting block one 331 and a limiting block two 332 are fixedly arranged on the inner wall of the rotating rod 33 and are used for limiting the axial movement range of the internal components, a movement rod 34 penetrates through the rotating rod 33 and is rotationally connected with the rotating rod 33, a sliding groove is formed in the middle part of the movement rod 34, a sliding rod 35 is arranged in the sliding groove and forms a sliding fit, the sliding rod 35 penetrates through the sealing plate 31 and is rotationally connected with the sealing plate 31, a rotating disc 351 is connected to the bottom end of the sliding rod 35, the rotating disc 351 is provided with an arc-shaped groove 352, the arc-shaped groove 352 is in sliding fit with the top end of the piston rod 313, and the piston rod 313 is driven to reciprocate in the inner groove through the rotation of the rotating disc 351, a guide rod is connected to the outer wall of the sealing plate 31, the guide rod penetrates through the moving plate 32 and is slidably connected with the moving plate 32, and a spring is arranged between the sealing plate 31 and the moving plate 32.

[0041] Further, the bottom end of the movement rod 34 penetrates through a sleeve body 341 and is fixedly connected with the sleeve body 341, the sleeve body 341 is provided with a clamping groove 342, a base 321 is connected to the outer wall of the moving plate 32, the base 321 is internally provided with a clamping rod 322, the clamping rod 322 is provided with a through groove 323, and the outer wall of the sealing plate 31 is provided with an inclined block 314, the top end of the inclined block 314 is aligned with the through groove 323 of the clamping rod 322 and forms a matching structure.

[0042] Further, the outer part of the axial flow fan 2 is provided with a rotating frame 23, the bottom end of the rotating frame 23 is provided with a sliding groove 24, the sliding groove 24 is sleeved with the shaft body 21, so that the rotating frame 23 can rotate around the shaft body 21, the side wall of the rotating frame 23 is provided with a clamping jaw 25, the position of the rotating frame 23 can be fixed by clamping with the limiting rod 22, and simultaneously, the inner wall of the rotating frame 23 is provided with an internal thread, which is matched with the external thread of the rotating rod 33.

[0043] In the present application, when used, first rotate the rotating frame 23 clockwise by ninety degrees, so that the pawl 25 is aligned with the direction of the limiting rod 22, then push the rotating frame 23 towards the barrel of the axial flow fan 2 until the pawl 25 is clamped into the limiting rod 22 to complete the fixation. Then twist the moving rod 34, at this time the end of the clamping rod 322 is clamped in the clamping groove 342 of the rotating rod 33, and the moving rod 34 and the rotating rod 33 form a clamping linkage. When the moving rod 34 is rotated, the rotating rod 33 rotates synchronously, since the rotating rod 33 is fixedly connected with the moving plate 32, and the sealing plate 31 is slidably connected with the moving plate 32 through the guide rod, therefore the moving plate 32 and the sealing plate 31 rotate synchronously with the rotating rod 33.

[0044] The external thread of the rotating rod 33 cooperates with the internal thread of the rotating frame 23, so that the moving plate 32 and the sealing plate 31 move along the axial direction towards the barrel of the axial flow fan 2 while rotating. When the sealing plate 31 is inserted into the barrel, the sealing ring two 310 on the outer wall thereof contacts and is pressed against the sealing ring one 20 on the inner wall of the barrel. When the moving rod 34 is continuously rotated, the sealing plate 31 cannot continue to move due to the limitation of the barrel, and the moving plate 32 compresses the spring therebetween, and the elastic force generated by the deformation of the spring pushes the sealing plate 31 to further press the sealing ring one 20, and through the mutual pressing of the sealing ring one 20 and the sealing ring two 310, a tight sealing structure is formed, which effectively prevents the infiltration of toxic gas from the outside into the cabin 1;

[0045] When the moving plate 32 moves a certain distance towards the barrel of the axial flow fan 2, the inclined block 314 on the outer wall of the sealing plate 31 moves to the position of the through groove 323 of the clamping rod 322 and begins to penetrate the through groove 323. Since the inclined block 314 is designed to be inclined, its inclined surface contacts the clamping rod 322 and generates a lateral thrust during the penetration process. With the continuous movement of the inclined block 314, the thrust gradually forces the clamping rod 322 to move outward to overcome the clamping force of the clamping groove 342, until the end of the clamping rod 322 completely separates from the clamping groove 342. At this time, the clamping state between the moving rod 34 and the rotating rod 33 is released, and the rotation of the moving rod 34 only drives itself to idle, and the rotating rod 33 and the sealing assembly connected therewith no longer move synchronously. This design ensures that the sealing plate 31 stops moving after reaching the preset sealing position through mechanical limiting and automatic tripping mechanism, effectively avoiding excessive pressing caused by misoperation of the operator or failure of the transmission system, thereby protecting the barrel of the axial flow fan 2 and the sealing assembly from damage, and significantly improving the reliability and service life of the device;

[0046] The sliding rod 35 is in sliding connection with the moving rod 34, when the moving rod 34 is rotated, the sliding rod 35 can rotate synchronously, but the two can slide axially relative to each other. During rotation, the rotating disc 351 fixedly connected with the sliding rod 35 rotates, and the arc-shaped groove 352 formed therein can be extruded by the piston rod 313 in the sealing plate 31. When the sleeve body 341 moves to the direction of the limiting block one 331, the arc-shaped groove 352 of the rotating disc 351 gradually extrudes the piston rod 313, and pushes it to slide to the direction of the sealing ring three 311. This action can compress the air in the groove in the sealing plate 31, so that the air enters the cavity 312 of the sealing ring three 311 through the channel. With the injection of gas, the sealing ring three 311 expands radially, tightly adheres to the inner wall of the barrel of the axial flow fan 2, and forms a dynamic sealing layer. Through this mechanism, the expansion pressure of the sealing ring three 311 can be automatically adjusted according to the rotation amount, so that high adhesion can be maintained with the inner wall of the barrel under different working conditions, and the reliability of the sealing system is further improved.

[0047] When it is necessary to release the sealing of the barrel of the axial flow fan 2, the moving rod 34 is reversely rotated, and the sliding rod 35 moves synchronously. When the sleeve body 341 moves to the position of the limiting block two 332, the arc-shaped groove 352 on the rotating disc 351 applies force to the piston rod 313 to reset it. The gas in the cavity 312 flows back to the groove in the sealing plate 31, so that the sealing ring three 311 returns to the original state to prevent damage due to friction during movement. Then, the moving rod 34 is continuously rotated, and the moving plate 32, the sealing plate 31 and the rotating rod 33 are synchronously rotated under the limitation of the limiting block two 332. The outer thread of the rotating rod 33 cooperates with the inner thread of the rotating frame 23, so that the moving plate 32 and the sealing plate 31 are gradually separated from the barrel. Then, the rotating frame 23 is pulled out to make the clamping jaw 25 and the limiting rod 22 disengage. Finally, the rotating frame 23 is rotated by 90 degrees to return to the original position.

[0048] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation based on the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An emergency refuge cabin for safe mining in a mine, comprising a cabin body (1), wherein the cabin body (1) is composed of a head cabin, a tail cabin, and a middle cabin connected by bolts and nuts, an axial flow fan (2) is provided in the tail cabin for ventilating the cabin body (1), and a sealing assembly is assembled on the axial flow fan (2), characterized in that: The sealing assembly comprises: A sealing plate (31), wherein the bottom end of the sealing plate (31) is connected to a second sealing ring (310), an inner groove is provided in the middle of the sealing plate (31), a piston rod (313) is assembled in the inner groove and can slide axially along the inner groove, a third sealing ring (311) is embedded in the side wall of the sealing plate (31), a cavity (312) is provided inside the third sealing ring (311), and the cavity (312) is communicated with the inner groove to form a pneumatic linkage sealing structure; A rotating rod (33) passes through the movable plate (32) and is fixedly connected to the movable plate (32), and an external thread is provided on the surface of the rotating rod (33). A first limiting block (331) and a second limiting block (332) are fixedly provided on the inner wall of the rotating rod (33) to limit the axial movement range of the internal component; A moving rod (34) is provided, wherein the moving rod (34) passes through the rotating rod (33) and is rotatably connected to the rotating rod (33). A sliding groove is provided in the middle of the moving rod (34), and a sliding rod (35) is provided inside to form a sliding fit. The sliding rod (35) passes through the sealing plate (31) and is rotatably connected to the sealing plate (31). The bottom end of the sliding rod (35) is connected to the rotating disk (351). The rotating disk (351) is provided with an arc groove (352). The arc groove (352) is slidably matched with the top end of the piston rod (313). The piston rod (313) is driven to reciprocate in the inner groove by the rotation of the rotating disk (351).

2. The mine safety emergency refuge cabin according to claim 1, characterized in that: The bottom end of the movement rod (34) passes through the sleeve (341) and is fixedly connected to the sleeve (341). The sleeve (341) is provided with a slot (342).

3. The mine safety emergency refuge cabin according to claim 1, characterized in that: The outer wall of the movable plate (32) is connected to a base (321), a clamping rod (322) is provided inside the base (321), and a through slot (323) is provided on the clamping rod (322).

4. The mine safety emergency refuge cabin according to claim 1, characterized in that: The outer wall of the sealing plate (31) is connected with a guide rod, which passes through the movable plate (32) and is slidably connected thereto. A spring is provided between the sealing plate (31) and the movable plate (32).

5. The mine safety emergency refuge cabin according to claim 1, characterized in that: The inner wall of the cylinder of the axial flow fan (2) is provided with a dustproof net and a sealing ring (20), and the outer wall of the cylinder of the axial flow fan (2) is connected to a shaft (21) and a limiting rod (22).

6. The mine safety emergency refuge cabin according to claim 5, characterized in that: A rotating frame (23) is provided outside the cylinder of the axial flow fan (2), and a sliding groove (24) is provided at the bottom end of the rotating frame (23). The sliding groove (24) is sleeved with the shaft (21), so that the rotating frame (23) can rotate around the shaft (21).

7. The mine safety emergency refuge cabin according to claim 6, characterized in that: The side wall of the rotating frame (23) is provided with a claw (25), which can realize the position fixation of the rotating frame (23) by engaging with the limiting rod (22). At the same time, the inner wall of the rotating frame (23) is provided with an internal thread, which cooperates with the external thread of the rotating rod (33).

8. The mine safety emergency refuge cabin according to claim 3, characterized in that: An outer wall of the sealing plate (31) is provided with an inclined block (314), and the top end of the inclined block (314) is aligned with the through groove (323) of the clamping rod (322) to form a matching structure.

9. The mine safety emergency refuge cabin according to claim 1, characterized in that: The splicing end of the tail cabin and the end surface of the middle cabin are both provided with a groove (11), and a sealing strip (12) is installed in the groove (11). The elastic deformation of the sealing strip (12) fills the splicing gap, which can effectively improve the sealing performance of the cabin body (1) connection and prevent gas from penetrating.

10. The mine safety emergency refuge cabin according to claim 9, characterized in that: The outer wall of the splicing end of the head cabin and the outer wall of the end face of the middle cabin are both fixedly connected with an insertion rod (13) and a sealing gasket (14); the insertion rod (13) can be inserted into the corresponding groove (11) to achieve mechanical positioning and connection; the sealing gasket (14) fills the splicing gap by extrusion, thereby enhancing the sealing performance of the cabin body (1).

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