Coal mine gas oxidation catalysis treatment equipment

Abstract

The invention relates to the technical field of coal mines, in particular to coal mine gas oxidation catalysis treatment equipment which comprises a ceramic heat accumulator, a ceramic heat accumulation rotating wheel is arranged in the ceramic heat accumulator, the ceramic heat accumulator is provided with a rotating assembly corresponding to the ceramic heat accumulation rotating wheel, and the rotating assembly comprises a motor; the air inlet pipeline is arranged on one side of the ceramic heat accumulator, the air inlet pipeline communicates with a filter box, and a filter screen is arranged in the filter box; the cleaning assembly comprises a cleaning plate rotationally arranged on one side of the filter screen; coal mine gas is filtered through a filter screen in a filter box, when the coal mine gas is subjected to oxidation catalysis through a ceramic heat storage rotating wheel, a second transmission shaft drives a first transmission shaft to rotate through cooperation of a lantern ring and a transmission ring, and the first transmission shaft drives a cleaning plate to rotate on one side of the filter screen; and when the cleaning plate rotates along the surface of the filter screen, the elastically arranged scraping plate cleans dust and impurities adhered to the filter screen.

Description

Technical Field

[0001] This invention relates to the field of coal mining, specifically to a coal mine gas oxidation catalytic treatment device. Background Technology

[0002] Coal mine gas, also known as coalbed methane, is a mixture of methane, carbon dioxide, and nitrogen that escapes from coal and surrounding rocks. Gas is a harmful factor in coal mine production. It not only pollutes the air, but when the gas content in the air is 5% to 16%, it can cause an explosion when it comes into contact with fire, resulting in accidents. Chinese patent publication number CN202061548U discloses a low-concentration methane rotary catalytic oxidation device, which includes a heat storage body with a rotating shaft mounted at its center, supported by bearings at both ends of the heat storage body. The rotating shaft is connected to a motor via a transmission mechanism. The heat storage body is provided with a heat insulation layer on its exterior and has chambers at both ends along its axial direction. One end has a partition that divides the chamber into a first air inlet chamber and a first air outlet chamber, and the other end has a partition that divides the chamber into a second air outlet chamber and a second air inlet chamber. The first air inlet chamber, the first air outlet chamber, the second air outlet chamber, and the second air inlet chamber are respectively connected to a first air inlet pipe, a first air outlet pipe, a second air outlet pipe, and a second air inlet pipe. This utility model is applicable to the field of emission reduction and utilization of low-concentration methane. Its beneficial effects are that the device does not require changing the airflow direction during operation, and the device has a simple structure and stable internal pressure during operation.

[0003] However, coal mine gas contains a certain amount of dust and impurities. When coal mine gas containing dust and impurities is directly introduced into the oxidation catalytic treatment device, the dust and impurities are likely to adhere to the airflow channels opened on the heat storage body, causing blockage of the airflow channels and thus affecting the subsequent oxidation catalytic efficiency of coal mine gas.

[0004] Therefore, a coal mine gas oxidation catalytic treatment device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a coal mine gas oxidation catalytic treatment device to solve the problem mentioned in the background art where dust and impurities contained in coal mine gas adhere to the airflow channels opened on the heat storage body.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A coal mine gas oxidation catalytic treatment device, comprising: A ceramic heat storage body, wherein a ceramic heat storage wheel is provided inside the ceramic heat storage body, and a rotating assembly is provided at a position corresponding to the ceramic heat storage wheel to drive the ceramic heat storage wheel to rotate. The rotating assembly includes a motor installed on the side wall of the ceramic heat storage body. An air inlet pipe is connected to one side of the ceramic heat storage body, and an air outlet pipe is connected to the other side of the ceramic heat storage body. The air inlet pipe is connected to a filter box, and a filter screen is installed inside the filter box. The filter screen is used to filter coal mine gas entering the ceramic heat storage body. A cleaning assembly for cleaning the filter screen, the cleaning assembly including a cleaning plate rotatably disposed on one side of the filter screen.

[0007] Preferably, both ends of the ceramic heat storage rotor are connected to a second drive shaft, and bearings are provided on the inner sidewall of the ceramic heat storage body at the end positions of the two sets of second drive shafts. The ceramic heat storage rotor is rotatably disposed inside the ceramic heat storage body through the cooperation of the two sets of second drive shafts and bearings.

[0008] Preferably, the motor is installed on one of the sidewalls of the ceramic heat storage body at a position corresponding to the second drive shaft, and the output end of the motor passes through the sidewall of the ceramic heat storage body and is connected to the end of the second drive shaft.

[0009] Preferably, a first drive shaft is rotatably disposed at the center of the filter screen, and the cleaning plate is mounted on the first drive shaft; The ceramic heat storage body is equipped with a transmission component inside, which is used to drive the first transmission shaft to rotate.

[0010] Preferably, the transmission assembly includes a collar sleeved on the outside of the second transmission shaft, and a plurality of circumferentially distributed filter screens are provided between the collar and the second transmission shaft; The collar rotates synchronously with the second drive shaft through the cooperation of multiple sets of filter screens.

[0011] Preferably, a transmission ring is provided on the side of the collar near the first transmission shaft, and the inner wall of the transmission ring is provided with multiple sets of transmission teeth that are evenly spaced in a circular pattern. The outer surface of the end of the first drive shaft is provided with a matching drive tooth groove at the position corresponding to the drive tooth. The first drive shaft meshes with the drive ring through the cooperation of the drive tooth and the drive tooth groove.

[0012] Preferably, the cleaning plate has a first storage groove on one side wall facing the filter screen. A scraper is provided inside the first storage groove, and multiple sets of first return springs are provided between the end of the scraper and the inner wall of the first storage groove. The first return springs are in elastic contact with the filter screen through the cooperation of the multiple sets of scrapers.

[0013] Preferably, a second storage groove is provided at the bottom center of the scraper, a shock block is provided inside the second storage groove, and a second return spring is provided between the shock block and the top of the inner part of the second storage groove.

[0014] Preferably, the surface of the filter screen is provided with multiple sets of evenly spaced abutment blocks in a circular pattern at positions corresponding to the second reset spring. The abutment blocks have a triangular cross-section, and the direction of the abutment blocks from low to high is consistent with the rotation direction of the first drive shaft.

[0015] Preferably, the lower end of the filter box is equipped with an installation cover, and the upper end of the installation cover is provided with a sealing airbag; The mounting cover has an air storage cavity inside, a sealing plate is slidably disposed inside the air storage cavity, and a third return spring is disposed between the sealing plate and the air storage cavity; An exhaust pipe is provided between the air storage chamber and the sealed airbag.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The coal mine gas is filtered through the filter screen inside the filter box. When the coal mine gas is oxidized and catalyzed by the ceramic heat storage rotor, the second drive shaft drives the first drive shaft to rotate through the cooperation of the collar and the drive ring. The first drive shaft drives the cleaning plate to rotate on one side of the filter screen. When the cleaning plate rotates along the surface of the filter screen, the elastically set scraper cleans the dust and impurities adhering to the filter screen. When the elastically set shock block comes into contact with the supporting block, the elastically set shock block is lifted. When the shock block and the supporting block are misaligned, the shock block strikes the surface of the filter screen, shaking off the dust adhering to the surface of the filter screen. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the ceramic heat storage body structure of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the filter box of the present invention; Figure 5 This is a schematic cross-sectional view of the cleaning plate structure of the present invention; Figure 6 This is a schematic cross-sectional view of the mounting cover structure of the present invention.

[0018] In the picture: 1. Ceramic heat storage body; 2. Motor; 3. Inlet pipe; 4. Filter box; 5. Outlet pipe; 6. Ceramic heat storage wheel; 7. Collar; 8. Transmission ring; 9. Transmission gear; 10. First transmission shaft; 11. Transmission gear groove; 12. Filter screen; 13. Support block; 14. Cleaning plate; 15. Mounting cover; 16. First storage slot; 17. First return spring; 18. Scraper; 19. Second storage slot; 20. Vibration block; 21. Second return spring; 22. Sealing airbag; 23. Air storage chamber; 24. Exhaust pipe; 25. Sealing plate; 26. Third return spring; 27. Second transmission shaft. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] like Figures 1-6 As shown, this application provides a coal mine gas oxidation catalytic treatment device, comprising: A ceramic heat storage body 1 is provided inside the ceramic heat storage wheel 6, and a rotating assembly is provided at the position of the ceramic heat storage wheel 6 in the ceramic heat storage body 1 to drive the ceramic heat storage wheel 6 to rotate. The rotating assembly includes a motor 2 installed on the side wall of the ceramic heat storage body 1. An air inlet pipe 3 is connected to one side of the ceramic heat storage body 1, and an air outlet pipe 5 is connected to the other side of the ceramic heat storage body 1. The air inlet pipe 3 is connected to a filter box 4, and a filter screen 12 is installed inside the filter box 4. The filter screen 12 is used to filter coal mine gas entering the ceramic heat storage body 1. A cleaning assembly for cleaning the filter screen 12, the cleaning assembly including a cleaning plate 14 rotatably disposed on one side of the filter screen 12.

[0022] In this embodiment: coal mine gas is injected into the interior of the ceramic heat storage body 1 through the air intake pipe 3, and the coal mine gas injected into the interior of the ceramic heat storage body 1 undergoes oxidation catalysis after being heated by the ceramic heat storage rotor 6; The filter screen 12 inside the filter box 4 can filter coal mine gas, preventing dust and impurities from entering the interior of the ceramic heat storage body 1 and adhering to the ceramic heat storage rotor 6, thus affecting the oxidation catalysis of coal mine gas by the ceramic heat storage rotor 6. The cleaning component can clean the surface of the filter screen 12 to prevent dust and impurities from clogging it.

[0023] Specifically, such as Figures 1-2 As shown, both ends of the ceramic heat storage wheel 6 are connected to a second drive shaft 27. Bearings are provided on the inner sidewall of the ceramic heat storage body 1 at the end positions of the two sets of second drive shafts 27. The ceramic heat storage wheel 6 is rotatably disposed inside the ceramic heat storage body 1 through the cooperation of the two sets of second drive shafts 27 and bearings. The motor 2 is installed on one of the side walls of the ceramic heat storage body 1 at a position corresponding to the second drive shaft 27, and the output end of the motor 2 passes through the side wall of the ceramic heat storage body 1 and is connected to the end of the second drive shaft 27.

[0024] In this embodiment: through the cooperation of motor 2 and second transmission shaft 27, the ceramic heat storage wheel 6 is driven to rotate inside the ceramic heat storage body 1. The rotation causes different radial sections of the ceramic heat storage wheel 6 to continuously alternate between "intake preheating - reaction heat release - exhaust heat storage", forming a stable temperature field and reaction zone. Thus, without changing the overall gas flow direction, the cold gas is continuously preheated to the reaction temperature and self-heating oxidation is maintained.

[0025] Specifically, such as Figures 2-3 As shown, a first drive shaft 10 is rotatably mounted at the center of the filter screen 12, and the cleaning plate 14 is mounted on the first drive shaft 10; The ceramic heat storage body 1 is equipped with a transmission component inside, which is used to drive the first transmission shaft 10 to rotate. The transmission assembly includes a collar 7 sleeved on the outside of the second transmission shaft 27, and multiple sets of circumferentially distributed filter screens 12 are provided between the collar 7 and the second transmission shaft 27. The collar 7 rotates synchronously with the second drive shaft 27 through the cooperation of multiple sets of filter screens 12; The collar 7 is provided with a transmission ring 8 on the side close to the first transmission shaft 10, and the inner wall of the transmission ring 8 is provided with multiple sets of transmission teeth 9 that are evenly spaced in a circle. The outer surface of the end of the first drive shaft 10 is provided with a matching drive tooth groove 11 at the position corresponding to the drive tooth 9. The first drive shaft 10 engages with the drive ring 8 through the cooperation of the drive tooth 9 and the drive tooth groove 11.

[0026] In this embodiment: through the cooperation of the filter screen 12, the second drive shaft 27 and the collar 7 rotate synchronously. When the collar 7 rotates, it drives the drive ring 8 on one side to rotate, thereby driving the first drive shaft 10 to rotate under the cooperation of the drive teeth 9 and the drive tooth groove 11, and then driving the cleaning plate 14 to rotate along the surface of the filter screen 12.

[0027] Specifically, such as Figures 4-5 As shown, the cleaning plate 14 has a first storage groove 16 on one side wall facing the filter screen 12. A scraper 18 is provided inside the first storage groove 16, and multiple sets of first return springs 17 are provided between the end of the scraper 18 and the inner wall of the first storage groove 16. The first return springs 17 are in elastic contact with the filter screen 12 through the cooperation of the multiple sets of scrapers 18. The scraper 18 has a second storage groove 19 at the bottom center position. The second storage groove 19 is provided with a shock block 20 inside, and a second return spring 21 is provided between the shock block 20 and the top of the inside of the second storage groove 19. The surface of the filter screen 12 is provided with multiple sets of evenly spaced abutment blocks 13 on the circumference at the position corresponding to the second reset spring 21. The cross-section of the abutment block 13 is triangular, and the direction of the abutment block 13 from low to high is consistent with the rotation direction of the first drive shaft 10.

[0028] In this embodiment: the first drive shaft 10 drives the cleaning plate 14 to rotate on one side of the filter screen 12. When the cleaning plate 14 rotates along the surface of the filter screen 12, the elastically set scraper 18 cleans the dust and impurities adhering to the filter screen 12. When the elastically set shock block 20 comes into contact with the abutment block 13, the elastically set shock block 20 is lifted. When the shock block 20 is misaligned with the abutment block 13, the shock block 20 strikes the surface of the filter screen 12, shaking off the dust adhering to the surface of the filter screen 12.

[0029] Specifically, such as Figures 4-5 As shown, a mounting cover 15 is installed at the lower end of the filter box 4, and a sealing airbag 22 is provided at the upper end of the mounting cover 15. The mounting cover 15 has an air storage chamber 23 inside, and a sealing plate 25 is slidably arranged inside the air storage chamber 23. A third return spring 26 is arranged between the sealing plate 25 and the air storage chamber 23. An exhaust pipe 24 is provided between the air storage chamber 23 and the sealing airbag 22.

[0030] In this embodiment: the lower end of the filter box 4 is sealed by the mounting cover 15. When it is necessary to clean the dust inside the filter box 4, the mounting cover 15 can be removed directly. When the mounting cover 15 is installed, the sealing airbag 22 can seal the connection between the filter box 4 and the mounting cover 15. The setting of the air storage chamber 23 can continuously fill the airbag 22 with gas to ensure that the sealing airbag 22 and the lower end of the filter box 4 are in close contact.

[0031] Specifically, this scheme involves injecting coal mine gas into the ceramic heat storage body 1 through the air intake pipe 3. After the coal mine gas is filtered by the filter screen 12 inside the filter box 4, it can be heated, oxidized, and catalyzed by the ceramic heat storage rotor 6. When the motor 2 drives the ceramic heat storage wheel 6 to rotate through the second drive shaft 27 to catalytically oxidize the coal mine gas, the second drive shaft 27 also drives the first drive shaft 10 to rotate through the cooperation of the collar 7 and the drive ring 8. The first drive shaft 10 drives the cleaning plate 14 to rotate on one side of the filter screen 12. When the cleaning plate 14 rotates along the surface of the filter screen 12, the elastically set scraper 18 cleans the dust and impurities adhering to the filter screen 12. When the elastically set shock block 20 comes into contact with the abutment block 13, the elastically set shock block 20 is lifted. When the shock block 20 and the abutment block 13 are misaligned, the shock block 20 impacts the surface of the filter screen 12, shaking off the dust adhering to the surface of the filter screen 12 and preventing the dust from clogging the filter holes on the filter screen 12.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0033] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A coal mine gas oxidation catalytic treatment device, characterized in that, include: A ceramic heat storage body (1) is provided with a ceramic heat storage wheel (6) inside the ceramic heat storage body (1), and a rotating component is provided at the position of the ceramic heat storage wheel (6) corresponding to the position of the ceramic heat storage wheel (6) to drive the ceramic heat storage wheel (6) to rotate. The rotating component includes a motor (2) installed on the side wall of the ceramic heat storage body (1). An air inlet pipe (3) is connected to one side of the ceramic heat storage body (1), and an air outlet pipe (5) is connected to the other side of the ceramic heat storage body (1). A filter box (4) is connected to the air inlet pipe (3), and a filter screen (12) is provided inside the filter box (4). The filter screen (12) is used to filter the coal mine gas entering the ceramic heat storage body (1). A cleaning assembly for cleaning the filter screen (12) includes a cleaning plate (14) rotatably disposed on one side of the filter screen (12).

2. The coal mine gas oxidation catalytic treatment equipment according to claim 1, characterized in that, Both ends of the ceramic heat storage wheel (6) are connected to a second drive shaft (27). The inner sidewall of the ceramic heat storage body (1) is provided with bearings at the end positions of the two sets of second drive shafts (27). The ceramic heat storage wheel (6) is rotatably disposed inside the ceramic heat storage body (1) through the cooperation of the two sets of second drive shafts (27) and bearings.

3. The coal mine gas oxidation catalytic treatment equipment according to claim 2, characterized in that, The motor (2) is installed on one of the side walls of the ceramic heat storage body (1) at a position corresponding to the second drive shaft (27), and the output end of the motor (2) passes through the side wall of the ceramic heat storage body (1) and is connected to the end of the second drive shaft (27).

4. The coal mine gas oxidation catalytic treatment equipment according to claim 2, characterized in that, The filter screen (12) is rotatably provided with a first drive shaft (10) at its center position, and the cleaning plate (14) is mounted on the first drive shaft (10); The ceramic heat storage body (1) is equipped with a transmission component inside, which is used to drive the first transmission shaft (10) to rotate.

5. The coal mine gas oxidation catalytic treatment equipment according to claim 4, characterized in that, The transmission assembly includes a collar (7) sleeved on the outside of the second transmission shaft (27), and multiple sets of circumferentially distributed filter screens (12) are provided between the collar (7) and the second transmission shaft (27). The collar (7) rotates synchronously with the second drive shaft (27) through the cooperation of multiple sets of filter screens (12).

6. The coal mine gas oxidation catalytic treatment equipment according to claim 5, characterized in that, The collar (7) is provided with a transmission ring (8) on the side near the first transmission shaft (10), and the inner wall of the transmission ring (8) is provided with multiple sets of transmission teeth (9) evenly spaced in a circle. The outer surface of the end of the first drive shaft (10) is provided with a matching drive tooth groove (11) at the position corresponding to the drive tooth (9). The first drive shaft (10) meshes with the drive ring (8) through the cooperation of the drive tooth (9) and the drive tooth groove (11).

7. The coal mine gas oxidation catalytic treatment equipment according to claim 1, characterized in that, The cleaning plate (14) has a first storage groove (16) on one side wall facing the filter screen (12). The first storage groove (16) is provided with a scraper (18), and multiple sets of first return springs (17) are provided between the end of the scraper (18) and the inner wall of the first storage groove (16). The first return springs (17) are in elastic contact with the filter screen (12) through the cooperation of the multiple sets of scrapers (18).

8. The coal mine gas oxidation catalytic treatment equipment according to claim 7, characterized in that, The scraper (18) has a second storage groove (19) at the bottom center position. The second storage groove (19) has a shock block (20) inside, and a second reset spring (21) is provided between the shock block (20) and the top of the second storage groove (19).

9. The coal mine gas oxidation catalytic treatment equipment according to claim 8, characterized in that, The surface of the filter screen (12) is provided with multiple sets of abutment blocks (13) evenly spaced in a circle at the position corresponding to the second reset spring (21). The cross-section of the abutment block (13) is triangular, and the direction of the abutment block (13) from low to high is consistent with the rotation direction of the first drive shaft (10).

10. The coal mine gas oxidation catalytic treatment equipment according to claim 1, characterized in that, The lower end of the filter box (4) is equipped with a mounting cover (15), and the upper end of the mounting cover (15) is provided with a sealing airbag (22). The mounting cover (15) has an air storage cavity (23) inside, and a sealing plate (25) is slidably arranged inside the air storage cavity (23). A third return spring (26) is arranged between the sealing plate (25) and the air storage cavity (23). An exhaust pipe (24) is provided between the air storage chamber (23) and the sealing airbag (22).

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