A dust-type automatic explosion-proof device with reloadable filling for mines

Abstract

The invention discloses a dust-type automatic explosion-proof device for mines that can be repeatedly filled, which relates to the technical field of explosion-proofing in mines and solves the technical problems that the existing technology cannot be quickly and automatically guided, only single explosion-proofing may cause low explosion-proofing effect and cannot prevent the spread of fire. The device comprises a main body, and a first mounting frame is fixedly installed on the lower wall of the main box body. The invention provides a method for explosion-proofing device to spray out explosion-proof dust by using energy-storing high-pressure gas to perform explosion-proofing. The method has the characteristics of fast energy cleaning effect, and can repeatedly spray explosion-proof dust in the direction of the flame generated by the explosion through repeated automatic filling of explosion-proof dust and re-accumulation of gas pressure. Through a rotatable structure and a pitch adjustment structure, the device can rely on the rapid guidance of the airflow generated by the explosion within a certain direction angle, and automatically adjust the angle of the explosion direction to perform explosion-proofing operations, thereby improving the precise explosion-proofing capability.

Description

Technical Field

[0001] The invention relates to the technical field of mine explosion isolation, in particular to a dust-type automatic explosion isolation device for mines that can be repeatedly filled. Background Art

[0002] The present invention mainly relates to mine explosion-proof technology. Generally speaking, mineral resources are the product of the earth's crust in its long-term formation, development and evolution process. They are formed by the aggregation of natural minerals under certain geological conditions and certain geological actions. Different geological actions can form different types of minerals. Mining, a comprehensive term for energy, is the technology and science of mining mineral resources from the earth's crust and the surface. Mining in a broad sense also includes the mining of coal and oil. The mining industry is an important raw material industry. Metallic ores are the main raw materials of the smelting industry, and non-metallic ores are important chemical raw materials and building materials. Most of the coal mine production is underground operation. The geological and mining conditions are complex and changeable, and there are many unsafe factors. It is often threatened by gas, coal dust, kerosene and roof hazards. Therefore, in order to ensure the safety of underground workers and ensure the normal production of mines, coal mine safety work must be placed in the first place of all work. Practice has shown that as long as the policy of "safety first, prevention first" is unswervingly implemented. By conscientiously implementing a series of laws and regulations guiding coal mine safety production, such as coal mine safety regulations, and taking effective prevention and control measures for various disasters, we can minimize or avoid the occurrence of various disasters and ensure safe production. For example, an invention named "two-way triggered coal mine underground automatic explosion-proof device", with publication number CN103291349B, provides a explosion-proof device, but there is a technical problem that it cannot be repeatedly reloaded and can only be used once, and there may be a technical problem that the explosion-proof effect is not ideal and thorough. For example, an invention named "a mechanical coal mine underground explosion-proof control system and equipment", with publication number CN112761730A, provides a mine explosion-proof device, but there is a technical problem that it cannot automatically and quickly guide and has a low response speed. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a dust-type automatic explosion-proof device that can be repeatedly loaded for use in mines, which solves the technical problems that the prior art cannot be quickly and automatically guided, and only single explosion-proofing may result in low explosion-proof effect and cannot prevent the spread of fire.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a dust-type automatic explosion-proof device that can be repeatedly loaded for mines, comprising a main body, characterized in that a first mounting frame is fixedly installed on the lower wall of the main box body, a guide air tube is fixedly installed on the lower wall of the first mounting frame, the guide air tube is a trumpet-shaped through pipe body, a film bracket is fixedly installed in the guide air tube, a blade bracket is fixedly installed in the guide air tube, a pneumatic fan is fixedly installed in the blade bracket, a vibration film is fixedly installed between the blade bracket and the film bracket, a vibration sensor is fixedly installed on one side of the vibration film and the inner wall of the guide air tube, a guide tail is fixedly installed on the rear end of the guide air tube, a pressure storage explosion-proof device is fixedly installed in the main body, a spare filling device is fixedly installed on the upper wall of the pressure storage explosion-proof device, a flameproof equipment positioning device is fixedly installed on the side wall of the spare filling device, and a guide diffusion structure is fixedly installed on the front end of the main body.

[0005] Preferably, the pressure-accumulating explosion-proof equipment includes a gas pump, which is fixedly installed on the inner wall of the main body, the gas pump input end is fixedly installed on the tail of the main body, the gas pump input end is fixedly installed with a dust filter, the gas pump output end is fixedly connected with a pressure chamber, the pressure chamber is fixedly installed on the inner wall of the main body, a sealing part is fixedly installed in the pressure chamber, a pressure limiting hood is fixedly installed in the pressure chamber, ventilation holes are opened in the side wall of the pressure limiting hood, a reset spring is connected to the pressure limiting hood, one end of the reset spring is connected to a pressure limiting ball, and the pressure limiting ball is slidably installed inside the pressure limiting hood.

[0006] Preferably, the sealing part includes a baffle plate, which is slidably installed on the inner wall of the pressure chamber, a side thrust pipe is provided in the pressure chamber, the output end of the side thrust pipe is connected to one end of the baffle plate, a slideway is provided in the pressure chamber, a slider is slidably installed in the slideway, guide wheels are fixedly installed at the upper and lower ends of the slider, a first electromagnet is fixedly installed on one side of the pressure chamber, a first pneumatic cylinder is fixedly installed in the pressure chamber, and a ventilation window is provided on the baffle plate.

[0007] Preferably, the backup filling equipment includes a flameproof tank body, a horizontal filling bin and a vertical storage bin. The horizontal filling bin is fixedly installed on the inner wall of the main body and is located on the upper side of the pressure chamber. A second pneumatic cylinder is fixedly installed in the horizontal filling bin, and a tail push plate is fixedly installed at the telescopic end of the second pneumatic cylinder. The vertical storage bin is fixedly installed on the upper side of the horizontal filling bin. The flameproof tank body is slidably installed in the horizontal filling bin. The cross-section of the flameproof tank body is square on the outside and circular on the inside. A front sealing film is fixedly installed on the front end of the flameproof tank body, and a rear sealing film is fixedly installed on the rear end of the flameproof tank body. The flameproof tank body is filled with explosion-proof dust.

[0008] Preferably, a dust cover is fixedly installed on the top of the vertical storage bin, a compression spring is connected to the lower end of the dust cover, one end of the compression spring is connected to a compression plate, and the compression plate is slidably installed on the inner wall of the vertical storage bin.

[0009] Preferably, the explosion-proof equipment positioning device includes a tank sending box, the tank sending box is fixedly installed on the side wall of the vertical storage bin, a tank sending pneumatic cylinder is fixedly installed in the tank sending box, a connecting frame is fixedly installed on the telescopic end of the tank sending pneumatic cylinder, a push rod is fixedly installed on the connecting frame, a push plate is fixedly installed on the front end of the push rod, a shell ejection pneumatic cylinder is fixedly installed in the connecting frame, and a second electromagnet is fixedly installed on the telescopic end of the shell ejection pneumatic cylinder.

[0010] Preferably, the guided diffusion structure includes a diffusion tube and a convergence tube, the convergence tube is fixedly installed on the front wall of the main body, a stop ring is fixedly installed inside the convergence tube, the diffusion tube is fixedly installed on the front wall of the convergence tube, and the diffusion tube is a semi-ellipsoidal thin-walled shell facing obliquely downward.

[0011] Preferably, an outer sleeve is fixedly installed on the inner wall of the main body, an inner sliding rod is slidably installed in the outer sleeve, a pin hole is opened on the upper wall of the inner sliding rod, a through hole is opened on the upper wall of the outer sleeve, pins are fixedly installed in the through hole and the pin hole, and a control box is fixedly installed on one end of the inner sliding rod.

[0012] Preferably, a lower mounting frame is fixedly installed on the upper wall of the main body, a pair of columns are rotatably installed at both ends of the lower mounting frame, the pair of columns are threadedly connected to the lower mounting frame through nuts and bolts, an upper mounting frame is rotatably installed between the upper ends of the pair of columns, and the pair of columns are threadedly connected to the upper mounting frame through nuts and bolts.

[0013] Preferably, a rotating column is fixedly mounted on the upper wall of the upper mounting frame, a pair of thrust roller bearings are fixedly mounted on the upper and lower walls of the rotating column, and a fixing seat is fixedly mounted on the upper and lower walls of the pair of thrust roller bearings.

[0014] Beneficial Effects

[0015] The present invention provides a dust-type automatic explosion-proof device that can be repeatedly filled for mines. The present invention provides a method for explosion-proofing the explosion-proof device by using high-pressure gas to store energy to spray out explosion-proof dust for explosion-proofing. The method has the characteristics of clean energy and fast action speed. The explosion-proof dust can be repeatedly sprayed in the direction of the flame generated by the explosion through repeated automatic filling of the explosion-proof dust and re-accumulation of gas pressure. The rotatable structure and the pitch adjustment structure can be used to quickly guide the airflow generated by the explosion within a certain direction angle, and the explosion direction can be automatically adjusted to perform explosion-proofing operations, thereby improving the precise explosion-proofing capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of a dust-type automatic explosion-proof device that can be repeatedly filled for mines according to the present invention.

[0017] Figure 2 The present invention is a schematic side view of the structure of a dust-type automatic explosion-proof device for mines that can be repeatedly loaded.

[0018] Figure 3 The present invention is a schematic diagram of the guide air duct structure of a dust-type automatic explosion-proof device for mines that can be repeatedly filled.

[0019] Figure 4 The present invention is a schematic diagram of the flameproof tank structure of a repeatedly refillable dust-type automatic flameproof device for mines.

[0020] Figure 5 The present invention is a schematic diagram of the diffusion tube structure of a dust-type automatic explosion-proof device for mines that can be repeatedly filled.

[0021] Figure 6 The present invention is a schematic diagram of the main cross-sectional structure of a dust-type automatic explosion-proof device for mines that can be repeatedly filled.

[0022] Figure 7 The present invention is a schematic diagram of the sealing structure of a dust-type automatic explosion-proof device for mines that can be repeatedly filled.

[0023] Figure 8 The present invention is a schematic diagram of the structure of a fixing seat of a dust-type automatic explosion-proof device for mines that can be repeatedly loaded.

[0024] Fig. 9 The present invention is a schematic diagram of the mounting frame structure of a dust-type automatic explosion-proof device for mines that can be repeatedly loaded.

[0025] In the figure: 1, main body; 2, guide air tube; 3, film bracket; 4, fan blade bracket; 5, pneumatic fan; 6, vibration film; 7, vibration sensor; 8, guide tail; 9, gas pump; 10, dust filter; 11, pressure chamber; 12, pressure limit cover; 13, reset spring; 14, pressure limit ball; 15, baffle plate; 16, slider; 17, first electromagnet; 18, first pneumatic cylinder; 19, flameproof tank; 20, horizontal installation Filling bin; 21. Vertical storage bin; 22. Second pneumatic cylinder; 23. Tail push plate; 24. Dust cover; 25. Pressing plate; 26. Tank delivery box; 27. Tank delivery pneumatic cylinder; 28. Shell ejection pneumatic cylinder; 29. ​​Second electromagnet; 30. Diffuser; 31. Converging tube; 32. Outer sleeve; 33. Inner slide bar; 34. Pin; 35. Lower mounting frame; 36. Column; 37. Upper mounting frame; 38. Rotating column; 39. Fixed seat; DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-9The present invention provides a technical solution: a dust-type automatic explosion-proof device for mines that can be repeatedly filled, comprising a main body 1, characterized in that a first mounting frame is fixedly installed on the lower wall of the main box, a guide air tube 2 is fixedly installed on the lower wall of the first mounting frame, the guide air tube 2 is a trumpet-shaped through-tube body, a film bracket 3 is fixedly installed in the guide air tube 2, a fan blade bracket 4 is fixedly installed in the guide air tube 2, a pneumatic fan 5 is fixedly installed in the fan blade bracket 4, a vibration film 6 is fixedly installed between the fan blade bracket 4 and the film bracket 3, a vibration sensor 7 is fixedly installed on one side of the vibration film 6 and the inner wall of the guide air tube 2, a guide tail wing 8 is fixedly installed on the rear end of the guide air tube 2, and a storage device 5 is fixedly installed in the main body 1. A pressure-storage explosion-proof device, a spare filling device is fixedly installed on the upper wall of the pressure-storage explosion-proof device, a flameproof equipment positioning device is fixedly installed on the side wall of the spare filling device, a guide diffusion structure is fixedly installed on the front end of the main body 1, the pressure-storage explosion-proof device includes a gas pump 9, the gas pump 9 is fixedly installed on the inner wall of the main body 1, the input end of the gas pump 9 is fixedly installed on the tail of the main body 1, a dust filter 10 is fixedly installed on the input end of the gas pump 9, and a pressure chamber 11 is fixedly connected to the output end of the gas pump 9, the pressure chamber 11 is fixedly installed on the inner wall of the main body 1, a sealing part is fixedly installed in the pressure chamber 11, a pressure-limiting cover 12 is fixedly installed in the pressure chamber 11, and a ventilation hole is opened on the side wall of the pressure-limiting cover 12. 2 is connected with a return spring 13, one end of the return spring 13 is connected with a pressure-limiting ball 14, the pressure-limiting ball 14 is slidably installed inside the pressure-limiting cover 12, the sealing part includes a baffle plate 15, the baffle plate 15 is slidably installed on the inner wall of the pressure chamber 11, a side thrust pipe is provided in the pressure chamber 11, the output end of the side thrust pipe is connected to one end of the baffle plate, a slideway is provided in the pressure chamber 11, a slider 16 is slidably installed in the slideway, guide wheels are fixedly installed at the upper and lower ends of the slider 16, a first electromagnet 17 is fixedly installed on one side of the pressure chamber 11, a first pneumatic cylinder 18 is fixedly installed in the pressure chamber 11, a ventilation window is provided on the baffle plate, the spare filling equipment includes a flameproof tank 19 and a horizontal filling bin 20 and a vertical The storage bin 21, the horizontal loading bin 20 is fixedly mounted on the inner wall of the main body 1 and is located on the upper side of the pressure chamber 11, a second pneumatic cylinder 22 is fixedly mounted in the horizontal loading bin 20, a tail push plate 23 is fixedly mounted on the telescopic end of the second pneumatic cylinder 22, the vertical storage bin 21 is fixedly mounted on the upper side of the horizontal loading bin 20, the flameproof tank body 19 is slidably mounted in the horizontal loading bin 20, the cross section of the flameproof tank body 19 is square on the outside and circular on the inside, a front sealing film is fixedly mounted on the front end of the flameproof tank body 19, a rear sealing film is fixedly mounted on the rear end of the flameproof tank body 19, the flameproof tank body 19 is filled with explosion-proof dust, a dust cover 24 is fixedly mounted on the top of the vertical storage bin 21, a compression spring is connected to the lower end of the dust cover 24,One end of the compression spring is connected to a compression plate 25, and the compression plate 25 is slidably installed on the inner wall of the vertical storage bin 21. The explosion-proof equipment positioning device includes a tank delivery box 26, and the tank delivery box 26 is fixedly installed on the side wall of the vertical storage bin 21. A tank delivery pneumatic cylinder 27 is fixedly installed in the tank delivery box 26, and a connecting frame is fixedly installed on the telescopic end of the tank delivery pneumatic cylinder 27, and a push rod is fixedly installed on the connecting frame, and a push plate is fixedly installed on the front end of the push rod. A shell ejection pneumatic cylinder 28 is fixedly installed in the connecting frame, and a second electromagnet 29 is fixedly installed on the telescopic end of the shell ejection pneumatic cylinder 28. The guided diffusion structure includes a diffusion tube 30 and a convergence tube 31, and the convergence tube 31 is fixedly installed on the front wall of the main body 1, and a stop ring is fixedly installed in the convergence tube 31. The diffusion tube 30 is fixedly installed on the front wall of the convergence tube 31. The diffusion tube 30 is a semi-ellipsoidal thin-walled shell facing the oblique lower side. An outer sleeve 32 is fixedly installed on the inner wall of the machine body 1, and an inner slide bar 33 is slidably installed in the outer sleeve 32. A pin hole is opened on the upper wall of the inner slide bar 33, and a through hole is opened on the upper wall of the outer sleeve 32. Pins 34 are fixedly installed in the through hole and the pin hole. A control box is fixedly installed on one end of the inner slide bar 33. A lower mounting frame 35 is fixedly installed on the upper wall of the main body 1. A pair of columns 36 are rotatably installed at both ends of the lower mounting frame 35. The pair of columns 36 are threadedly connected to the lower mounting frame 35 through nuts and bolts. An upper mounting frame 37 is rotatably installed between the upper ends of the pair of columns 36. The pair of columns 36 are threadedly connected to the upper mounting frame 37 through nuts and bolts. A rotating column 38 is fixedly installed on the upper wall of the upper mounting frame 37. A pair of thrust roller bearings are fixedly installed on the upper and lower walls of the rotating column 38, and a fixing seat 39 is fixedly installed on the upper and lower walls of the pair of thrust roller bearings.

[0028] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0029] Example: Figure 1-9As shown, the vibration sensor 7, the first electromagnet 17, the first pneumatic cylinder 18, the gas pump 9, the second pneumatic cylinder 22, the second electromagnet 29, the tank delivery pneumatic cylinder 27, and the shell ejection pneumatic cylinder 28 are connected to the external controller, the power supply, and the gas source through wires. First, the fixing seat 39 is installed in the top of the mine, the dust cover 24 is opened, the clamping plate 25 is taken out, the filled flameproof tank body 19 is placed in, and then the clamping plate 25 is placed, and the dust cover 24 is tightly closed. The dust cover 24 can be connected using threads. The second pneumatic cylinder 22 pushes the flameproof tank body through the tail push plate 23 19 enters under the push plate. At this time, a transverse plate is installed on the upper side of the rear push plate 23 so that the flameproof tank body 19 above will not fall when the rear push plate 23 has not completely returned to the retracted position. The second electromagnet 29 sucks the flameproof tank body 19, and the telescopic end of the tank delivery pneumatic cylinder 27 extends, so that the flameproof tank body 19 moves to the position between the pressure chamber 11 and the convergence tube 31 as shown in the figure. After use, the second electromagnet 29 is powered off, the flameproof tank body 19 is abandoned and adsorbed, and the shell ejection pneumatic cylinder 28 pushes the flameproof tank body 19 out, the equipment is reset and the new flameproof tank body 19 is pushed into the specified position.

[0030] The first electromagnet 17 continuously starts the slider 16 to prevent it from detaching. At this time, the baffle plate is blocked and the gas cannot be discharged from the exhaust port. The gas pump 9 is started, and the gas pump 9 is filtered through the dust filter 10 to suck in clean dust-free gas, squeeze open the pressure limiting ball 14, and inject the gas into the pneumatic cylinder. When the gas in the pneumatic cylinder reaches the maximum pressure, it is balanced with the pressure at the output end of the gas pump 9. At this time, the gas pump 9 is turned off to reduce energy consumption. The pressure limiting ball 14 blocks the gas so that the gas will not be discharged from the air inlet end.

[0031] Then, when an explosion or fire occurs, the airflow is transmitted to the guide air duct 2, and the guide air duct 2 and the guide tail wing 8 quickly drive the entire main body 1 to rotate, so that the main body 1 faces the direction of the gas source. The larger the guide air duct 2 is, the better the rapid adjustment ability is. The vibration is transmitted to the vibration film 6 to induce the vibration of the vibration film 6, so that the vibration sensor 7 obtains an electrical signal, and the rotating pneumatic fan 5 will also emit an electrical signal, and has the ability to send out an alarm signal through the connected controller. The electrical signal is connected to the controller so that the controller cuts off the power to the first electromagnet 17, and the baffle plate moves upward rapidly due to the air pressure below, and the slider 16 moves to the right, so that the gas is ejected from the ventilation window, and the gas breaks through the rear sealing film and the front sealing film, and the explosion-proof dust therein is ejected in the direction of the explosion and fire, for dust-type explosion-proof. After use, the first pneumatic cylinder 18 pushes the slider 16 to reset and turns on the first electromagnet 17 for adsorption.

[0032] The upper and lower walls of the rotating column 38 are connected with thrust roller bearings, which allow the rotating column 38 to rotate freely and change direction, and by installing additional limit devices, its rotation angle can be changed from all directions to a certain angle range. If the equipment does not need to rotate, the upper mounting frame 37 can be directly fixed on the ceiling or the mine wall. By adjusting the angles of the upper mounting frame 37, the lower mounting frame 35 and the column 36 during the installation process, the pitch angle of the main body 1 can be set to a certain extent to accommodate various construction conditions.

[0033] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A dust-type automatic explosion-proof device for mines that can be repeatedly loaded, comprising a main body (1), characterized in that: A first mounting frame is fixedly mounted on the lower wall of the main body, a guide air tube (2) is fixedly mounted on the lower wall of the first mounting frame, the guide air tube (2) is a trumpet-shaped through-tube body, a film bracket (3) is fixedly mounted inside the guide air tube (2), a fan blade bracket (4) is fixedly mounted inside the guide air tube (2), a pneumatic fan (5) is fixedly mounted inside the fan blade bracket (4), a vibration film (6) is fixedly mounted between the fan blade bracket (4) and the film bracket (3), a vibration sensor (7) is fixedly mounted on one side of the vibration film (6) and the inner wall of the guide air tube (2), a guide tail wing (8) is fixedly mounted on the rear end of the guide air tube (2), a pressure storage explosion-proof device is fixedly mounted inside the main body (1), and the pressure storage explosion-proof device A spare filling device is fixedly installed on the upper wall surface, a flameproof equipment positioning device is fixedly installed on the side wall surface of the spare filling device, a guide diffusion structure is fixedly installed on the front end of the main body (1), the pressure storage flameproof device comprises a gas pump (9), the gas pump (9) is fixedly installed on the inner wall surface of the main body (1), the input end of the gas pump (9) is fixedly installed on the tail of the main body (1), a dust filter (10) is fixedly installed on the input end of the gas pump (9), and the output end of the gas pump (9) is fixedly connected to a pressure chamber (11), the pressure chamber (11) is fixedly installed on the inner wall surface of the main body (1), a sealing part is fixedly installed in the pressure chamber (11), a pressure limiting cover (12) is fixedly installed in the pressure chamber (11), and the pressure limiting cover (12) is fixedly installed in the pressure chamber (11). A ventilation hole is provided on the side wall of the main body (12); a reset spring (13) is connected inside the pressure limiting cover (12); one end of the reset spring (13) is connected to a pressure limiting ball (14); the pressure limiting ball (14) is slidably installed inside the pressure limiting cover (12); the standby filling device comprises a flameproof tank body (19), a horizontal filling bin (20) and a vertical storage bin (21); the horizontal filling bin (20) is fixedly installed on the inner wall of the main body (1) and is located on the upper side of the pressure chamber (11); a second pneumatic cylinder (22) is fixedly installed inside the horizontal filling bin (20); a rear push plate (23) is fixedly installed at the telescopic end of the second pneumatic cylinder (22); the vertical storage bin (21) is fixedly installed on the upper side of the horizontal filling bin (20); the flameproof tank body (19) 9) is slidably installed in a horizontal loading bin (20), the cross section of the flameproof tank body (19) is square on the outside and circular on the inside, a front sealing film is fixedly installed at the front end of the flameproof tank body (19), a rear sealing film is fixedly installed at the rear end of the flameproof tank body (19), the flameproof tank body (19) is filled with explosion-proof dust, the flameproof equipment positioning device comprises a tank delivery box (26), the tank delivery box (26) is fixedly installed on the side wall of the vertical storage bin (21), a tank delivery pneumatic cylinder (27) is fixedly installed in the tank delivery box (26), a connecting frame is fixedly installed at the telescopic end of the tank delivery pneumatic cylinder (27), a push rod is fixedly installed on the connecting frame, a push plate is fixedly installed at the front end of the push rod, and a shell ejection pneumatic cylinder (28) is fixedly installed in the connecting frame,A second electromagnet (29) is fixedly mounted on the telescopic end of the shell ejection pneumatic cylinder (28).

2. A dust-type automatic explosion-proof device for mines that can be repeatedly loaded according to claim 1, characterized in that: The sealing portion comprises a baffle plate (15), the baffle plate (15) is slidably mounted on the inner wall of the pressure chamber (11), a side thrust pipe is provided in the pressure chamber (11), the output end of the side thrust pipe is connected to one end of the baffle plate, a slideway is provided in the pressure chamber (11), a slider (16) is slidably mounted in the slideway, guide wheels are fixedly mounted at the upper and lower ends of the slider (16), a first electromagnet (17) is fixedly mounted on one side of the pressure chamber (11), a first pneumatic cylinder (18) is fixedly mounted in the pressure chamber (11), and a ventilation window is provided on the baffle plate.

3. The dust-type automatic explosion-proof device for mines that can be repeatedly loaded according to claim 1 is characterized in that: A dust cover (24) is fixedly mounted on the top of the vertical storage bin (21), a compression spring is connected to the lower end of the dust cover (24), one end of the compression spring is connected to a compression plate (25), and the compression plate (25) is slidably mounted on the inner wall of the vertical storage bin (21).

4. The dust-type automatic explosion-proof device for mines that can be repeatedly loaded according to claim 1 is characterized in that: The guide diffusion structure comprises a diffusion tube (30) and a convergence tube (31); the convergence tube (31) is fixedly mounted on the front wall surface of the main body (1); a stop ring is fixedly mounted inside the convergence tube (31); the diffusion tube (30) is fixedly mounted on the front wall surface of the convergence tube (31); and the diffusion tube (30) is a semi-ellipsoidal thin-wall shell facing obliquely downward.

5. The dust-type automatic explosion-proof device for mines that can be repeatedly loaded according to claim 1 is characterized in that: An outer sleeve (32) is fixedly mounted on the inner wall of the main body (1), an inner slide rod (33) is slidably mounted in the outer sleeve (32), a pin hole is provided on the upper wall of the inner slide rod (33), a through hole is provided on the upper wall of the outer sleeve (32), a pin (34) is fixedly mounted in the through hole and the pin hole, and a control box is fixedly mounted on one end of the inner slide rod (33).

6. A dust-type automatic explosion-proof device for mines that can be repeatedly loaded according to claim 5, characterized in that: A lower mounting frame (35) is fixedly mounted on the upper wall of the main body (1); a pair of upright posts (36) are rotatably mounted at both ends of the lower mounting frame (35); the pair of upright posts (36) are threadedly connected to the lower mounting frame (35) via nuts and bolts; an upper mounting frame (37) is rotatably mounted between the upper ends of the pair of upright posts (36); the pair of upright posts (36) are threadedly connected to the upper mounting frame (37) via nuts and bolts.

7. A dust-type automatic explosion-proof device for mines that can be repeatedly loaded according to claim 6, characterized in that: A rotating column (38) is fixedly mounted on the upper wall surface of the upper mounting frame (37), a pair of thrust roller bearings are fixedly mounted on the upper and lower wall surfaces of the rotating column (38), and a fixing seat (39) is fixedly mounted on the upper and lower wall surfaces of the pair of thrust roller bearings.

Images