An emergency life-saving oxygen supply device in a mine

Abstract

The present invention discloses an emergency life-saving oxygen supply device in a mine, which includes a compressor, two adsorption tanks and a gas storage tank. Inside the tank body of the adsorption tank, an intake space and an adsorption space are arranged coaxially. Inside the adsorption space, a spiral blade is provided. The spiral blade forms an upward axial transmission of molecular sieve particles in the adsorption space through rotation, so as to form the flow of molecular sieve particles between the adsorption space and the intake space. Inside the intake space, a rotatable separation cup is provided. The separation screen inside the separation cup screens and removes powder from the molecular sieve particles. The emergency life-saving oxygen supply device in the mine in the present invention improves the adsorption space of the radial flow adsorption tower, increases the function of cleaning molecular sieve particles. When the molecular sieve particles pass through the separation cup, they can be separated and deflated. The cleaning work of the molecular sieve particles can be carried out inside the adsorption tank without opening the adsorption tank, which greatly simplifies the treatment process.

Description

Technical Field

[0001] The present invention relates to the technical field of molecular sieve oxygen generation equipment, and particularly to an emergency rescue oxygen supply device in a mine. Background Art

[0002] The emergency rescue oxygen supply device is a key equipment for mine safety protection and must have the ability of efficient, stable and long-term oxygen supply. Modern mine emergency oxygen supply devices usually adopt a radial flow adsorption tower structure, in which the gas flows radially, the flow channel is reasonably designed, the pressure drop is small, and the oxygen production efficiency is high. It can provide sufficient oxygen in a short time to meet the breathing needs of mine workers. The compact structure of the radial flow adsorption tower also makes it more adaptable to the narrow space of the mine and is convenient for installation and transportation.

[0003] In practical applications, the molecular sieve of the mine emergency oxygen supply device may be broken or worn after long-term operation, and fine powders are generated inside the molecular sieve particles. These powders will not only reduce the adsorption efficiency, but also may block the gas flow channel, and even enter the respiratory system with oxygen, endangering the health of miners. Therefore, it is necessary to regularly clean the broken molecular sieve and screen out the powders to ensure the stable operation of the oxygen generation system. The adsorption tower usually adopts a fixed encapsulation structure, and the molecular sieve is filled in the internal cavity. Replacing the molecular sieve requires disassembling multiple components, and the process is cumbersome. Summary of the Invention

[0004] In view of the difficult separation of the powders inside the molecular sieve particles of the radial flow adsorption tower type oxygen supply device in the prior art, the present invention provides an emergency rescue oxygen supply device in a mine, which is provided with a molecular sieve cleaning function inside the oxygen supply device to clean some of the molecular sieve particles in the adsorption tank without disassembling the oxygen supply device.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An emergency life-saving oxygen supply device in a mine, comprising a compressor, an adsorption tank and a gas storage tank. Inside the tank body of the adsorption tank, a first material cylinder and a second material cylinder are arranged coaxially. An intake space is formed inside the first material cylinder. A bottom plate located at the lower part and a pressing plate with adjustable height located at the upper part are arranged between the first material cylinder and the second material cylinder. An adsorption space is formed among the first material cylinder, the second material cylinder, the bottom plate and the pressing plate. An exhaust space is formed between the second material cylinder and the inner wall of the tank body. It is characterized in that a first material flow hole is arranged at the lower part of the first material cylinder, and a second material flow hole is arranged at the upper part. A spiral blade is arranged inside the adsorption space. The spiral blade forms an upward axial transmission of molecular sieve particles in the adsorption space through rotation. An isolation cup is axially slidably arranged inside the first material cylinder. A separation net for separating molecular sieve particles and powder is arranged inside the isolation cup. The upper space of the separation net communicates with the intake space. A material discharge pipe for discharging powder communicates with the lower space of the isolation cup below the separation net. A fourth material flow hole for communicating with the first material flow hole is arranged above the separation net of the isolation cup.

[0007] When the separation net is located between the first material flow hole and the second material flow hole, the molecular sieve particles in the intake space enter the isolation cup. The isolation cup forms a centrifugal movement of the molecular sieve particles on the separation net through rotation. The molecular sieve particles enter the adsorption space through the fourth material flow hole and the first material flow hole. The molecular sieve particles in the adsorption space are conveyed upward through the spiral blade and enter the intake space through the second material flow hole, so as to realize the circulation of the molecular sieve particles between the adsorption space and the intake space.

[0008] Preferably, a first sealing sleeve and a second sealing sleeve are axially slidably connected to the first material cylinder. The first sealing sleeve is used to seal or open the first material flow hole, and the second sealing sleeve is used to seal or open the second material flow hole.

[0009] Preferably, a sealing plate is rotatably connected inside the first sealing sleeve. The sealing plate is used to seal the radial surface of the first sealing sleeve. The isolation cup is fixedly connected to the upper part of the sealing plate. A third material flow hole is arranged above the sealing plate of the first sealing sleeve. The third material flow hole is used to form a communication state between the first material flow hole and the fourth material flow hole.

[0010] Preferably, a first support is arranged at the lower part of the tank body. A rotating disk and a first driving component for driving the rotating disk to rotate are arranged on the first support. The rotating disk is connected to the sealing plate through a first functional cylinder. The first functional cylinder is used to drive the sealing plate to move axially, so as to realize the sealing action or opening action of the first material flow hole.

[0011] Preferably, a guiding pipe is provided at the bottom of the tank body. The guiding pipe is coaxially arranged and communicated with the first material cylinder. The first sealing sleeve is respectively matched with the guiding pipe and the first material cylinder to form an axial movement of the first sealing sleeve inside the guiding pipe and the first material cylinder.

[0012] Preferably, the bottom plate is fixedly connected to the second material cylinder and rotatably connected to the first material cylinder. A spiral blade is fixedly connected to the inner wall of the second material cylinder. A first connecting sleeve is fixedly connected to the lower part of the bottom plate. The first connecting sleeve is located outside the guiding pipe. The first connecting sleeve penetrates downward through the tank body and extends to the outside of the tank body. A second driving assembly for driving the first connecting sleeve to rotate is arranged on the first support.

[0013] Preferably, the second sealing sleeve is attached to the outer wall of the first material cylinder. The upper part of the second sealing sleeve is connected to the second support on the upper part of the tank body through a third functional cylinder. The third functional cylinder is used to drive the second sealing sleeve to perform axial movement to realize the sealing action or opening action of the second material flow hole.

[0014] Preferably, a pressing plate is sleeved between the second sealing sleeve and the second material cylinder. When the oxygen supply device is in the oxygen supply state, the pressing plate is used to press and limit the molecular sieve particles inside the adsorption space. When the oxygen supply device is in the cleaning state, the pressing plate is located above the second material flow hole and forms a seal for the upper part of the adsorption space.

[0015] Preferably, the pressing plate is connected to the tank body through a second functional cylinder. The second functional cylinder is used to drive the pressing plate to perform axial movement.

[0016] Preferably, the pressing plate and the second functional cylinder are connected through a pressing block. The pressing block is used to realize the elastic connection between the pressing plate and the second functional cylinder.

[0017] The beneficial effects of the present invention are as follows:

[0018] The emergency life-saving oxygen supply device in the mine is provided with a molecular sieve cleaning function. The adsorption space and the intake space inside the adsorption tank are communicated. A spiral sheet is arranged inside the adsorption space, and a separation cup is arranged inside the intake space. The separation cup is used for screening molecular sieve particles and powders. The spiral sheet drives the molecular sieve particles inside the adsorption space to perform axial transmission through rotation, so that the molecular sieve particles flow between the adsorption space and the intake space. When the molecular sieve particles pass through the separation cup, powder screening is carried out to realize the cleaning of the molecular sieve particles inside the adsorption tank, reduce the broken powders between the molecular sieve particles inside the adsorption space, and improve the adsorption efficiency. Moreover, the powder screening of the molecular sieve particles can be completed inside the adsorption tank without disassembling the adsorption tank, which greatly simplifies the treatment process.

[0019] The separation cup of the emergency rescue oxygen supply device in this mine screens the molecular sieve particles through a separation net, separating the powder from the molecular sieve particles. The molecular sieve particles can leave the separation net through centrifugal motion and enter the adsorption space again, realizing the rapid flow and separation of the molecular sieve particles on the separation net. The powder is discharged through the material discharge pipe for timely treatment.

[0020] The emergency rescue oxygen supply device in this mine is an improvement on the structure of the radial flow adsorption tower, adding a molecular sieve cleaning function. The molecular sieve cleaning work of this oxygen supply device is carried out during the process of the molecular sieve particles flowing between the adsorption space and the intake space, without the need to open the adsorption tank for cleaning, which is convenient for cleaning. After the cleaning is completed, the first sealing sleeve and the second sealing sleeve seal the first material cylinder, and the adsorption tank can normally carry out the adsorption work of the oxygen supply device, and the oxygen supply function and the cleaning function can be switched conveniently. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the emergency rescue oxygen supply device in this mine;

[0022] Figure 2 is a schematic structural diagram of the adsorption tank of the emergency rescue oxygen supply device in this mine;

[0023] Figure 3 is Figure 2 a schematic structural diagram of part A of the adsorption tank of the emergency rescue oxygen supply device in this mine;

[0024] Figure 4 is Figure 2 a schematic structural diagram of the cross-section C-C of the adsorption tank of the emergency rescue oxygen supply device in this mine;

[0025] Figure 5 is Figure 2 a schematic structural diagram of part B of the adsorption tank of the emergency rescue oxygen supply device in this mine;

[0026] Figure 6 is a schematic structural diagram of the adsorption tank (cleaning state) of the emergency rescue oxygen supply device in this mine;

[0027] Figure 7 is a schematic structural diagram of the emergency rescue oxygen supply device in this mine (oxygen supply state).

[0028] In the figure: 101, air filter element; 102, compressor; 103, pressure stabilizing valve; 104, first adsorption tank; 105, second adsorption tank; 106, gas storage tank;

[0029] 1. Tank body; 2. First material cylinder; 3. Second material cylinder; 4. Bottom plate; 5. Pressing plate; 6. First sealing sleeve; 7. Separation cup; 8. Second sealing sleeve; 9. Guide pipe; 10. Material discharge pipe; 11. First functional cylinder; 12. First bracket; 13. Exhaust pipe; 14. Air inlet pipe; 15. Second bracket; 16. Exhaust space; 17. Adsorption space; 18. Intake space; 19. Spiral blade;

[0030] 21. First material flow hole; 22. Second material flow hole; 23. Limit ring; 24. Air guide pipe; 41. First connecting sleeve; 51. Second functional cylinder; 52. Pressing block; 521. Third connecting sleeve; 522. Fourth connecting sleeve; 523. Elastic member; 61. Third material flow hole; 62. Sealing plate; 71. Separation net; 72. Separation space; 73. Storage space; 74. Fourth material flow hole; 81. Second connecting sleeve; 82. Third functional cylinder; 121. Rotating disk; 122. First gear; 123. Second gear; 124. Chain; 125. First motor; 126. Tooth ring; 127. Third gear; 128. Second motor. Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] Refer to Figure 1 , an emergency rescue oxygen supply device in a mine, including an air filter 101, a compressor 102, a pressure stabilizing valve 103, a first adsorption tank 104, a second adsorption tank 105 and a gas storage tank 106. Among them, the compressor 102 is used to compress air to obtain high-pressure gas. The air filter 101 is connected to the intake end of the compressor 102, and the air filter 101 is an air filter for filtering air. The pressure stabilizing valve 103 is connected to the outlet end of the compressor 102 for adjusting the air pressure of the exhaust gas of the compressor 102 to obtain stable high-pressure gas. The first adsorption tank 104 and the second adsorption tank 105 are adsorption tanks with the same structure. The gas storage tank 106 is respectively communicated with the exhaust ends of the first adsorption tank 104 and the second adsorption tank 105. Molecular sieve particles are arranged inside the adsorption tank. The molecular sieve particles are used to screen out nitrogen in the high-pressure gas to realize the separation of nitrogen and oxygen. Oxygen can enter the gas storage tank 106 through the molecular sieve particles, and the gas storage tank 106 is used to store oxygen. The gas storage tank 106 can be configured with an oxygen delivery pipe for delivering oxygen to the personnel in the mine. The first adsorption tank 104 and the second adsorption tank 105 work alternately to realize continuous oxygen supply of the oxygen supply device.

[0033] The tank bodies 1 of the above-mentioned first adsorption tank 104 and second adsorption tank 105 have the same structure. Refer to Figure 2, inside the tank body 1, a first material cylinder 2 and a second material cylinder 3 are provided. A bottom plate 4 and a pressing plate 5 are arranged between the first material cylinder 2 and the second material cylinder 3. The first material cylinder 2, the second material cylinder 3, the bottom plate 4 and the pressing plate 5 are coaxially arranged. The bottom plate 4 is located at the bottom of the first material cylinder 2 and the second material cylinder 3 and seals the bottom between the first material cylinder 2 and the second material cylinder 3. The pressing plate 5 is located above the bottom plate 4. An adsorption space 17 is formed between the first material cylinder 2, the second material cylinder 3, the bottom plate 4 and the pressing plate 5. The adsorption space 17 is used to place molecular sieve particles.

[0034] Furthermore, both the first material cylinder 2 and the second material cylinder 3 are cylinders with gas circulation holes. An air guide pipe 24 is connected to the upper part of the first material cylinder 2. The air guide pipe 24 communicates with the air inlet pipe 14 of the tank body 1. The inside of the first material cylinder 2 is an air inlet space 18. The bottom of the tank body 1 communicates with an exhaust pipe 13. The outer space of the second material cylinder 3 is an exhaust space 16. After the high-pressure air enters from the air inlet pipe 14, it sequentially passes through the air inlet space 18, the adsorption space 17 and the exhaust space 16. The nitrogen molecular sieve is removed through the adsorption space 17, so that high-concentration oxygen is obtained in the exhaust space 16. The high-concentration oxygen is discharged through the exhaust pipe 13 and enters the gas storage tank 106.

[0035] Inside the above-mentioned adsorption space 17, a spiral blade 19 is provided. The outer edge of the spiral blade 19 is fixedly connected to the inner wall of the second material cylinder 3. The spiral blade 19 extends upward from the bottom of the second material cylinder 3. The length of the spiral blade 19 needs to be set according to the actual size so that it does not interfere with the pressing plate 5. The bottom plate 4 is fixedly connected to the second material cylinder 3, and the bottom plate 4 is rotatably connected to the first material cylinder 2. A first connecting sleeve 41 (refer to Figure 6 ) is fixedly connected to the lower part of the bottom plate 4. The first connecting sleeve 41 penetrates downward through the tank body 1 and extends to the outside of the tank body 1. The first connecting sleeve 41 is rotatably and sealingly connected to the tank body 1. The first connecting sleeve 41 is coaxially arranged with the first material cylinder 2. A first support 12 is arranged at the lower part of the tank body 1. A second driving component for driving the first connecting sleeve 41 to rotate is arranged on the first support 12.

[0036] Specifically, refer to Figure 6 , the second driving component includes a gear ring 126, a third gear 127 and a second motor 128. The second motor 128 is fixedly connected to the first support 12. A gear ring 126 is fixed to the outside of the first connecting sleeve 41. The output shaft of the second motor 128 is fixedly connected to a third gear 127. The axle of the third gear 127 is rotatably connected to the first support 12. The third gear 127 meshes with the gear ring 126. The second motor 128 can drive the third gear 127 and the gear ring 126 to rotate, forming the rotation of the first connecting sleeve 41, the second material cylinder 3 and the spiral blade 19. The spiral blade 19 can realize the upward axial transmission of the molecular sieve particles in the adsorption space 17 through rotation.

[0037] Furthermore, the first material cylinder 2 is provided with a first material flow hole 21 and a second material flow hole 22 for communicating the adsorption space 17 with the intake space 18. The first material flow hole 21 is located at the bottom of the first material cylinder 2, and the second material flow hole 22 is located above the first material flow hole 21. The first material flow hole 21 is used for the molecular sieve particles to enter the adsorption space 17 from the intake space 18, and the second material flow hole 22 is used for the molecular sieve particles to enter the intake space 18 from the adsorption space 17.

[0038] When the spiral blade 19 conveys some of the molecular sieve particles in the adsorption space 17 upward by rotation, the molecular sieve particles inside the adsorption space 17 move axially from bottom to top. The molecular sieve particles in the upper part of the adsorption space 17 enter the upper part of the intake space 18 through the second material flow hole 22, and the molecular sieve particles in the lower part of the intake space 18 enter the adsorption space 17 through the first material flow hole 21, realizing the cyclic flow of the molecular sieve particles between the adsorption space 17 and the intake space 18.

[0039] Reference Figure 6 , a second sealing sleeve 8 is arranged outside the first material cylinder 2. The second sealing sleeve 8 is located at the upper part of the first material cylinder 2. The second sealing sleeve 8 is coaxially arranged with the first material cylinder 2 and is axially slidably connected. A limiting ring 23 for limiting the second sealing sleeve 8 is arranged on the outer wall of the first material cylinder 2. The second sealing sleeve 8 is in contact with the outer wall of the first material cylinder 2. The upper part of the second sealing sleeve 8 penetrates through the tank body 1 and extends to the outside of the tank body 1. A second connecting sleeve 81 is arranged on the upper part of the second sealing sleeve 8. Specifically, the second connecting sleeve 81 is fixedly connected to the top of the second sealing sleeve 8. A second support 15 is installed on the upper part of the tank body 1. The second connecting sleeve 81 is connected to the second support 15 through a third functional cylinder 82. The third functional cylinder 82 is vertically arranged. The third functional cylinder 82 is used to drive the second sealing sleeve 8 to perform axial movement, and the second sealing sleeve 8 seals or opens the second material flow hole 22 through axial movement.

[0040] Furthermore, a first sealing sleeve 6 is arranged inside the first material cylinder 2. The first sealing sleeve � is located at the lower part of the first material cylinder 2. The first sealing sleeve 6 is coaxially arranged with the first material cylinder 2 and is axially slidably connected. Reference Figure 3 , the first sealing sleeve 6 is in contact with the inner wall of the first material cylinder 2, and a sealing plate 62 is arranged inside the first sealing sleeve 6. Reference Figure 2, a rotating disk 121 is provided on the first support 12, a first functional cylinder 11 is installed on the rotating disk 121, the output shaft of the first functional cylinder 11 is connected to the sealing plate 62, the first functional cylinder 11 is vertically arranged, and the first functional cylinder 11 is used to drive the sealing plate 62 and the first sealing sleeve 6 to move axially. The first sealing sleeve 6 seals or opens the first material flow hole 21 through axial movement.

[0041] Reference Figure 2 and Figure 3 , a guiding tube 9 is provided at the bottom of the tank body 1. Specifically, the lower end of the guiding tube 9 is fixedly connected to the first support 12, and the upper end of the guiding tube 9 penetrates into the tank body 1 and is fixedly connected to the first material cylinder 2, so that the guiding tube 9 is communicated with the first material cylinder 2.

[0042] The guiding tube 9 and the first material cylinder 2 are coaxially arranged, the inner diameters of the guiding tube 9 and the first material cylinder 2 are the same, the first sealing sleeve 6 matches the guiding tube 9 and the first material cylinder 2, and the first sealing sleeve 6 can move continuously axially inside the guiding tube 9 and the first material cylinder 2.

[0043] The outside of the guiding tube 9 contacts the first connecting sleeve 41, and the guiding tube 9 is used to isolate the first connecting sleeve 41 from the first sealing sleeve 6.

[0044] Furthermore, a separation cup 7 is arranged inside the first sealing sleeve 6, and the separation cup 7 is used to separate molecular sieve particles and powder. Reference Figure 3 and Figure 4 , the separation cup 7 is fixedly connected to the upper part of the sealing plate 62, the sealing plate 62 is rotatably connected to the first sealing sleeve 6, and at the same time, the sealing plate 62 also seals the radial surface of the first sealing sleeve 6. A separation mesh 71 is arranged inside the separation cup 7, the upper space of the separation mesh 71 is a separation space 72, the separation space 72 is used to carry molecular sieve particles, the lower space of the separation mesh 71 is a storage space 73, and the storage space 73 is used to store powder. The separation mesh 71 is used to separate molecular sieve particles and powder, realize the cleaning work of the molecular sieve particles inside the adsorption tank, reduce the broken powder between the molecular sieve particles in the adsorption space 17, and thus improve the adsorption efficiency.

[0045] The above-mentioned separation cup 7 is in the shape of a cylinder with a wider upper part and a narrower lower part. The wider upper part is in contact with the first sealing sleeve 6, and a material passage is formed between the narrower lower part and the inner wall of the first sealing sleeve 6. Specifically, the diameter of the storage space 73 is smaller than that of the separation space 72. The upper end part of the storage space 73 is in contact with the first sealing sleeve 6, and a material passage is formed between the lower end part of the separation space 72 and the inner wall of the first sealing sleeve 6. The upper opening of the separation space 72 communicates with the air inlet space 18. Above the separation net 71 of the separation cup 7, a fourth material flow hole 74 is provided. The fourth material flow hole 74 is located on the side surface of the separation cup 7. On the side wall of the first sealing sleeve 6, a third material flow hole 61 is provided. The third material flow hole 61 is located above the sealing plate 62. The above-mentioned material passage is used to connect the fourth material flow hole 74 and the third material flow hole 61.

[0046] Reference Figure 6 , the above-mentioned first sealing sleeve 6 can realize the connection between the third material flow hole 61 and the first material flow hole 21 through axial movement. At this time, the first material flow hole 21 is in an open state, and the air inlet space 18 is connected to the adsorption space 17 through the separation space 72, the fourth material flow hole 74, the material passage, the third material flow hole 61 and the first material flow hole 21.

[0047] The above-mentioned rotating disk 121 is rotatably connected to the first bracket 12, and a first driving component for driving the rotating disk 121 to rotate is arranged on the first bracket 12.

[0048] Reference Figure 6 , the first driving component includes a rotating disk 121, a first gear 122, a second gear 123, a chain 124 and a first motor 125. The first motor 125 is fixedly connected to the first bracket 12. The axles of the first gear 122 and the second gear 123 are respectively rotatably connected to the first bracket 12. The first gear 122 is coaxially and fixedly connected to the rotating disk 121. The second gear 123 is coaxially and fixedly connected to the output shaft of the first motor 125. The first gear 122 and the second gear 123 are connected by the chain 124. The first motor 125 drives the second gear 123 and the first gear 122 to rotate. The rotating disk 121, the sealing plate 62 and the separation cup 7 rotate following the first gear 122. The rotation of the separation cup 7 can form the centrifugal movement of the molecular sieve particles on the separation net 71. The molecular sieve particles enter the adsorption space 17 in sequence through the fourth material flow hole 74, the material passage, the third material flow hole 61 and the first material flow hole 21 through the centrifugal movement, realizing the rapid flow of the molecular sieve particles on the separation net 71 and avoiding the accumulation of the molecular sieve particles on the separation net 71.

[0049] At the bottom of the above-mentioned storage space 73, a material discharge pipe 10 is connected. The material discharge pipe 10 is used for discharging the powder inside the storage space 73. The material discharge pipe 10 can be connected to a negative pressure pump to suck out the powder through negative pressure.

[0050] Reference Figure 2 , the pressing plate 5 is sleeved outside the second sealing sleeve 8, and the inner edge of the pressing plate 5 is slidably and sealingly connected to the outside of the second sealing sleeve 8. The pressing plate 5 is axially slidably connected to the first material cylinder 2, and the pressing plate 5 is connected to the tank body 1 through the second functional cylinder 51. The axis of the second functional cylinder 51 is vertically arranged, and the second functional cylinder 51 is used to drive the pressing plate 5 to move axially.

[0051] Reference Figure 5 , the pressing plate 5 and the second functional cylinder 51 are connected through a pressing block 52, and the pressing block 52 is used to realize the elastic connection between the pressing plate 5 and the second functional cylinder 51. Specifically, the pressing block 52 includes a third connecting sleeve 521, a fourth connecting sleeve 522 and an elastic member 523. The third connecting sleeve 521 is slidably sleeved outside the fourth connecting sleeve 522, and the elastic member 523 is located inside the compression space formed between the third connecting sleeve 521 and the fourth connecting sleeve 522. The elastic member 523 is a spring in a compressed state, and the stretching tension of the elastic member 523 causes a separation trend between the third connecting sleeve 521 and the fourth connecting sleeve 522. The elastic member 523 can realize the elastic pressing of the pressing plate 5 on the molecular sieve particles and adapt to the air pressure change inside the adsorption space 17.

[0052] The pressing plate 5 has two position states, reference Figure 7 , when the oxygen supply device is in the oxygen supply state, the second sealing sleeve 8 seals the second material flow hole 22, and the pressing plate 5 is used to press and limit the molecular sieve particles inside the adsorption space 17; reference Figure 6 , when the oxygen supply device is in the cleaning state, the second material flow hole 22 is opened, and the pressing plate 5 is located above the second material flow hole 22 to form a seal above the adsorption space 17 to prevent the molecular sieve particles from overflowing from the upper part of the adsorption space 17 when being conveyed upward.

[0053] The emergency rescue oxygen supply device in this mine is an improvement on the adsorption tank based on the radial flow adsorption tower structure, and a molecular sieve cleaning function is added on the basis of adsorption oxygen production. The working process of the adsorption tank of the emergency rescue oxygen supply device in this mine is as follows:

[0054] (1) Oxygen supply state, the oxygen supply state of the adsorption tank of the emergency rescue oxygen supply device in this mine is the same as the oxygen production principle of the radial flow adsorption tower in the prior art. Reference Figure 7 , when this adsorption tank is in the oxygen supply state (the arrow indicates the gas movement direction), the second sealing sleeve 8 and the first sealing sleeve 6 are both in the lower limit position. The second sealing sleeve 8 seals the second material flow hole 22, the first sealing sleeve 6 seals the first material flow hole 21, and the pressing plate 5 presses and limits the molecular sieve particles inside the adsorption space 17.

[0055] High-pressure air enters the intake space 18 from the intake pipe 14, then flows radially, and high-concentration oxygen is obtained in the exhaust space 16 through the adsorption in the adsorption space 17. The high-concentration oxygen is exhausted through the exhaust pipe 13 and enters the storage tank 106.

[0056] (2) Cleaning state, refer to Figure 6 , when the adsorption tank is in the cleaning state (the arrow indicates the moving direction of the molecular sieve particles), the third functional cylinder 82 drives the second sealing sleeve 8 to move upward. The second sealing sleeve 8 is located at the upper limit position, and the second sealing sleeve 8 no longer seals the second material flow hole 22. At the same time, the second functional cylinder 51 drives the pressing plate 5 to move upward. The pressing plate 5 is located above the second material flow hole 22 to form a seal above the adsorption space 17. The first functional cylinder 11 drives the first sealing sleeve 6 to move upward. The first sealing sleeve 6 is located at the upper limit position. At this time, the third material flow hole 61 is communicated with the first material flow hole 21.

[0057] The first motor 125 and the second motor 128 work respectively. The second motor 128 can drive the toothed ring 126 and the third gear 127 to rotate, forming the rotation of the first connecting sleeve 41, the second material cylinder 3 and the spiral blade 19. The first motor 125 drives the second gear 123 and the first gear 122 to rotate, and the rotating disk 121, the sealing plate 62, the separation cup 7 and the separation net 71 rotate following the first gear 122.

[0058] The spiral blade 19 conveys the molecular sieve particles in the adsorption space 17 upward through rotation. The molecular sieve particles in the upper part of the adsorption space 17 enter the intake space 18 through the second material flow hole 22. The molecular sieve particles in the upper part of the intake space 18 enter the separation space 72 of the separation cup 7. The separation net 71 separates the molecular sieve particles and powders in the separation space 72. The powders can pass through the separation net 71 and enter the storage space 73. The molecular sieve particles on the separation net 71 enter the material channel through the centrifugal motion from the fourth material flow hole 74. The molecular sieve particles in the material channel enter the adsorption space 17 through the third material flow hole 61 and the first material flow hole 21 in sequence. Due to the continuous conveyance of the spiral blade 19 in the adsorption space 17, the molecular sieve particles can continuously circulate between the adsorption space 17, the intake space 18 and the separation space 72 until most of the molecular sieve particles are cleaned.

[0059] The molecular sieve cleaning function of this oxygen supply device is carried out during the circulation process of the molecular sieve particles between the adsorption space 17 and the intake space 18. It is not necessary to open the adsorption tank for cleaning, which is convenient for cleaning. After the cleaning is completed, the first motor 125 and the second motor 128 stop working. The first sealing sleeve 6 and the second sealing sleeve 8 seal the first material cylinder 2, and the pressing plate 5 presses and limits the molecular sieve particles inside the adsorption space 17. The adsorption tank can carry out the adsorption work normally.

[0060] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. An emergency life-saving oxygen supply device in a mine, comprising a compressor, an adsorption tank and a gas storage tank. Inside the tank body of the adsorption tank, a first material cylinder and a second material cylinder are arranged coaxially. An intake space is formed inside the first material cylinder. A bottom plate is arranged at the lower part and a pressing plate with adjustable height is arranged at the upper part between the first material cylinder and the second material cylinder. An adsorption space is formed among the first material cylinder, the second material cylinder, the bottom plate and the pressing plate. An exhaust space is formed between the second material cylinder and the inner wall of the tank body. It is characterized in that, A first material cylinder is provided with a first material flow hole at the lower part and a second material flow hole at the upper part. A spiral blade is arranged inside the adsorption space, and the spiral blade forms an upward axial transmission of molecular sieve particles in the adsorption space through rotation. A separation cup is axially slidably arranged inside the first material cylinder. A separation net for separating molecular sieve particles and powder is arranged inside the separation cup. The upper space of the separation net communicates with the air inlet space. A material discharge pipe for discharging powder communicates with the lower space of the separation cup below the separation net. A fourth material flow hole for communicating with the first material flow hole is arranged above the separation net of the separation cup. A first sealing sleeve and a second sealing sleeve are axially slidably connected to the first material cylinder. The first sealing sleeve is used to seal or open the first material flow hole, and the second sealing sleeve is used to seal or open the second material flow hole. A sealing plate is rotatably connected inside the first sealing sleeve. The sealing plate is used to seal the radial surface of the first sealing sleeve. The separation cup is fixedly connected to the upper part of the sealing plate. A third material flow hole is arranged above the sealing plate of the first sealing sleeve. The third material flow hole is used to form a communication state between the first material flow hole and the fourth material flow hole. A first support is arranged at the lower part of the tank body. A rotating disk and a first driving component for driving the rotating disk to rotate are arranged on the first support. The rotating disk is connected to the sealing plate through a first functional cylinder. The first functional cylinder is used to drive the sealing plate to move axially to realize the sealing action or opening action of the first material flow hole. The pressing plate is sleeved between the second sealing sleeve and the second material cylinder. When the oxygen supply device is in the oxygen supply state, the pressing plate is used to press and limit the molecular sieve particles inside the adsorption space. When the oxygen supply device is in the cleaning state, the pressing plate is located above the second material flow hole and forms a seal for the upper part of the adsorption space.

2. The emergency life-saving oxygen supply device in the mine according to claim 1, characterized in that, A guiding pipe is arranged at the bottom of the tank body. The guiding pipe is coaxially arranged with and communicated with the first material cylinder. The first sealing sleeve is respectively matched with the guiding pipe and the first material cylinder to form the axial movement of the first sealing sleeve inside the guiding pipe and the first material cylinder.

3. The emergency life-saving oxygen supply device in the mine according to claim 2, characterized in that, The bottom plate is fixedly connected to the second material cylinder and rotatably connected to the first material cylinder. The inner wall of the second material cylinder is fixedly connected with a spiral blade. A first connecting sleeve is fixedly connected to the lower part of the bottom plate. The first connecting sleeve is located outside the guiding pipe. The first connecting sleeve penetrates downward through the tank body and extends to the outside of the tank body. A second driving component for driving the first connecting sleeve to rotate is arranged on the first support.

4. The emergency life-saving oxygen supply device in the mine according to claim 3, characterized in that, The second sealing sleeve is attached to the outer wall of the first material cylinder. The upper part of the second sealing sleeve is connected to a second support on the upper part of the tank body through a third functional cylinder. The third functional cylinder is used to drive the second sealing sleeve to move axially to realize the sealing action or opening action of the second material flow hole.

5. The emergency life-saving oxygen supply device in the mine according to claim 4, wherein, The pressing plate is connected to the tank body through a second functional cylinder. The second functional cylinder is used to drive the pressing plate to move axially.

6. The emergency life-saving oxygen supply device in the mine according to claim 5, characterized in that, The pressing plate is connected to the second functional cylinder through a pressing block, and the pressing block is used to achieve elastic connection between the pressing plate and the second functional cylinder.

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