A safe and efficient coal mine gas extraction device

Abstract

The present invention discloses a safe and efficient coal mine gas extraction device, which belongs to the field of gas extraction technology. In order to solve the problem that the extraction device needs two driving structures to achieve sealing and throwing effects during the gas extraction process, this arrangement is not only cumbersome to operate, but the use of two driving structures also makes the use and manufacturing costs high. In the invention, a raised frame is fixedly installed at the middle of one end of the top surface of the extraction box, a carbon cleaning frame is plugged into and installed in the lower end inner cavity of the extraction box, an inclined placement plate is installed in the inner cavity of one end of the upper end of the extraction box, and an electric sealing plate is fixedly installed on the top surface of the other end of the inner cavity of the extraction box, a pair of suction boxes are fixedly installed on the outer wall of one end of the upper end of one side of the extraction box, and a nitrogen storage box is fixedly installed on the outer wall of the lower end of one side of the extraction box. The structural arrangement of the present invention is ingenious, which not only saves use and manufacturing costs, but also the operator only needs to start the electric sealing plate to achieve multiple effects at the same time, which is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of gas extraction, in particular to a device for safely and efficiently extracting coal mine gas. Background Art

[0002] Gas is formed when cellulose and organic matter from ancient plants are decomposed by anaerobic bacteria during the initial stages of coal formation. In high-temperature, high-pressure environments, gas continues to be generated as coal forms due to physical and chemical reactions. Because gas exists as a free gas within the cracks and pores of the coal mass or surrounding rock, it is often carried with it after raw coal is excavated. Furthermore, due to the relatively sealed interior of the mine and poor air circulation, failure to promptly extract the gas from the raw coal can lead to high gas concentrations in the mine, making it prone to explosions. Furthermore, raw coal containing high levels of gas poses a health hazard during processing and consumption, and presents a risk of explosion during combustion. Therefore, to minimize the impact of gas on the mined coal during mining, extraction equipment is required to promptly extract the gas from the mined coal.

[0003] Current coal mine gas extraction devices usually allow the coal to fall inside the extraction device. By falling to the bottom of the inner cavity of the extraction device, cracks are generated, allowing the gas to diffuse into the extraction device. By extracting the gas, gas collection can be achieved. However, when the extraction device is actually used, since the raw coal needs to be placed in the extraction device first, and then the extraction device is sealed to extract the gas, two driving structures are required in this process. One driving structure is used to seal the extraction device, and the other driving structure is used to push the raw coal into the extraction device. This setting is not only cumbersome to operate, but the use of two driving structures also makes the use and manufacturing costs higher.

[0004] In response to the above problems, a safe and efficient coal mine gas extraction device is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a safe and efficient coal mine gas extraction device. By using this device to work, the problem that when the extraction device in the above background is actually used, it is necessary to first place the raw coal in the extraction device and then seal the extraction device to extract the gas. In this process, two driving structures are required, one of which is used to seal the extraction device and the other is used to push the raw coal into the extraction device. This setting is not only cumbersome to operate, but the use of two driving structures also makes the use and manufacturing costs higher.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a safe and efficient coal mine gas extraction device, comprising an extraction box, a raised frame fixedly installed at the middle of one end of the top surface of the extraction box, a carbon cleaning rack inserted in the inner cavity of the lower end of the extraction box, an inclined placement plate installed in the inner cavity of one end of the upper end of the extraction box, and an electric sealing plate fixedly installed on the top surface of the other end of the inner cavity of the extraction box, a crack-promoting lifting plate installed at the lower end of the inner cavity of the extraction box, a pair of suction boxes fixedly installed on the outer wall of one end of the upper end of one side of the extraction box, and a nitrogen storage box fixedly installed on the outer wall of the lower end of one side of the extraction box.

[0007] Furthermore, an extraction inner groove is provided in the middle inner cavity of the extraction box, an inlet is provided in the middle of one end of the top surface of the extraction box, and an intake inner groove is provided on the inner wall of the other end of the inner cavity of the inlet, an inner wall slide is provided on the upper middle inner wall of one end of the inner cavity of the extraction inner groove, and a bottom mounting groove is provided on the inner cavity bottom surface of the inner wall slide, and a bottom inner groove is provided in the middle inner cavity of the lower end of the extraction box, and a plurality of through-holes are evenly arranged on the inner cavity bottom surface of the extraction inner groove, and the through-holes are respectively connected with the bottom inner groove, and an intake bottom groove is provided on the inner cavity bottom surface of the bottom inner groove, and the bottom of the intake bottom groove is connected with the bottom of the bottom mounting groove by an L-shaped through hole, and an insertion side hole is provided on the lower outer wall of the other side of the extraction box, and a horizontal limiting block is fixedly installed on the inner wall of one end of the upper end of the inner cavity of the extraction inner groove, and the horizontal limiting block is provided at the inner end of the upper end of the inner wall slide.

[0008] Furthermore, a baffle is fixedly installed on the middle inner wall of the upper end of the inner cavity of the extraction groove, a pair of semicircular slots are respectively provided on the inner walls at both ends of the inner cavity of the insertion side hole, a through sliding hole is provided in the middle of the horizontal limiting block, and a snap-on bottom groove is provided on the bottom surface of the inner cavity of the through sliding hole.

[0009] Furthermore, the inclined placement plate includes a vertical slider and an inclined plate fixedly installed on the outer wall of the lower inner end of the vertical slider. The vertical slider is elastically slidably installed in the inner wall slide groove through a connecting spring. A pushing slider is slidably installed in the sliding hole, and a pushing block is installed in the inner cavity of the pushing slider.

[0010] Furthermore, a pushing groove is provided on the inner outer wall of the upper end of the vertical slider, and inclined sliding grooves are respectively provided on the inner walls on both sides of the inner cavity of the pushing groove. Connecting sliding shafts are respectively fixedly installed on the outer walls on both sides of one end of the pushing slider, and the connecting sliding shafts are respectively slidably provided in the inclined sliding grooves. An installation receiving groove is provided on the outer wall of the other end of the pushing slider, and a bottom connecting hole is provided at one end of the bottom surface of the pushing slider.

[0011] Furthermore, a return spring is installed on the outer wall of one end of the pushing block, and the pushing block is elastically slidably installed in the installation receiving groove through the return spring, a bottom push groove is provided at one end of the bottom surface of the pushing block, and inclined push grooves are respectively provided on the inner walls on both sides of the inner cavity of the bottom push groove, and a sliding block is slidably installed through the bottom communicating hole, and vertical push slide shafts are respectively fixedly installed on the outer walls on both sides of the upper end of the sliding block, and the vertical push slide shafts are respectively slidably provided in the inclined push grooves.

[0012] Furthermore, the electric blocking plate includes an electric telescopic column and a sealing plate embedded and slidably installed in the inner groove, and a lower protrusion is fixedly installed on the bottom surface of the front end of the sealing plate, and the lower protrusion is fixedly installed on the output end of the electric telescopic column.

[0013] Furthermore, the crack-promoting lifting plate includes a crack-promoting plate and a first pneumatic telescopic column whose output end is fixedly mounted on the bottom surface of the crack-promoting plate, and the first pneumatic telescopic column is embedded and fixedly mounted in the bottom groove, and a second pneumatic telescopic column is embedded and fixedly mounted in the inner cavity of the bottom mounting groove. The crack-promoting plate includes a mounting base plate and a plurality of crack-promoting rods evenly arranged and fixedly mounted on the top surface of the mounting base plate. The first pneumatic telescopic column includes an air cylinder and a piston column with its lower end sealed and slidably mounted in the inner cavity of the air cylinder. The composition and connection relationship of each structure in the second pneumatic telescopic column are the same as those in the first pneumatic telescopic column.

[0014] Furthermore, the carbon cleaning frame includes a connecting push plate and a scraper arranged on one side of the connecting push plate, and the two ends of the connecting push plate and the scraper are fixedly connected by connecting rods respectively, and a concave handle is fixedly installed on the outer wall of the other side of the connecting push plate.

[0015] Furthermore, a pair of receiving circular grooves are respectively provided on the outer walls at both ends of the connecting push plate, and semicircular clamping blocks are elastically slidably installed at the inner cavity openings of the receiving circular grooves through extrusion springs, and the semicircular clamping blocks are movably clamped in the semicircular clamping grooves.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when the raw coal enters the extraction box, the electric sealing plate can be started, and the electric sealing plate will drive the inclined placement plate to move downward while achieving the sealing effect, so that the raw coal can continuously fall from the inclined plate to the bottom of the inner cavity of the extraction box, thereby breaking the raw coal. When gas continues to run out from the cracks in the raw coal, it can be collected in the extraction box. After that, by starting the nitrogen storage box, nitrogen is continuously discharged into the extraction inner tank, and the suction box is started at the same time to continuously absorb air and gas, so that gas can be collected. The structure is cleverly set up, which not only saves the use and manufacturing costs, but also the operator only needs to start the electric sealing plate to achieve multiple effects at the same time. It is convenient and fast to operate and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the extraction box of the present invention;

[0019] Figure 3 It is a schematic cross-sectional view of the present invention;

[0020] Figure 4 It is a schematic cross-sectional view of an extraction box of the present invention;

[0021] Figure 5 For the present invention Figure 4 A magnified view of point A;

[0022] Figure 6 Schematic cross-sectional view of an inclined placement plate of the present invention;

[0023] Figure 7 It is a cross-sectional schematic diagram of the push slider of the present invention;

[0024] Figure 8 This is a cross-sectional schematic diagram of the push card block of the present invention;

[0025] Figure 9 Schematic cross-sectional view of a first pneumatic telescopic column of the present invention;

[0026] Figure 10 A side view of a crack-promoting plate of the present invention;

[0027] Figure 11 It is a schematic diagram of the three-dimensional structure of the carbon cleaning frame of the present invention.

[0028] In the figure: 1. Extraction box; 11. Extraction inner groove; 111. Shielding plate; 12. Feeding port; 13. Storage inner groove; 14. Inner wall slide groove; 15. Bottom mounting groove; 16. Bottom inner groove; 17. Through-hole; 18. Storage bottom groove; 19. L-shaped through hole; 190. Insertion side hole; 1901. Semicircular clamping groove; 20. Horizontal limit block; 201. Through-hole; 202. Clamping bottom groove; 2. Raised frame; 3. Carbon cleaning frame; 31. Connecting push plate; 311. Storage circular groove; 312. Semicircular clamping block; 313. Extrusion spring; 32. Scraper; 33. Connecting rod; 34. Concave handle; 4. Tilt plate; 41. Vertical slider; 411. Push groove; 412. Inclined slide; 42. Connecting spring; 43. Inclined plate; 44. Push slider; 441. Connecting slide shaft; 442. Installing receiving groove; 443. Bottom connecting hole; 45. Pushing block; 451. Return spring; 452. Bottom push groove; 453. Inclined push groove; 454. Sliding block; 455. Vertical push slide shaft; 5. Electric blocking plate; 51. Electric telescopic column; 52. Sealing plate; 53. Lower protrusion; 6. Crack-promoting lifting plate; 61. Crack-promoting plate; 611. Installing bottom plate; 612. Crack-promoting rod; 62. First pneumatic telescopic column; 621. Air storage cylinder; 622. Piston column; 63. Second pneumatic telescopic column; 7. Suction box; 8. Nitrogen storage box. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In order to solve the technical problem that the extraction device needs two driving structures to achieve sealing and throwing effects during the gas extraction process, this setting is not only cumbersome to operate, but also the use of two driving structures makes the use and manufacturing costs high. Figures 1-10 As shown, the following preferred technical solutions are provided:

[0031] A safe and efficient coal mine gas extraction device includes an extraction box 1, a raised frame 2 is fixedly installed in the middle of one end of the top surface of the extraction box 1, a carbon cleaning frame 3 is plugged into the inner cavity of the lower end of the extraction box 1, an inclined placement plate 4 is installed in the inner cavity of one end of the upper end of the extraction box 1, and an electric sealing plate 5 is fixedly installed on the top surface of the other end of the inner cavity of the extraction box 1, a crack-promoting lifting plate 6 is installed at the lower end of the inner cavity of the extraction box 1, a pair of suction boxes 7 are fixedly installed on the outer wall of one end of the upper end of one side of the extraction box 1, and the input end of the suction box 7 passes through the outer wall of the extraction box 1 and is arranged in the inner cavity of the extraction box 1, a nitrogen storage box 8 is fixedly installed on the outer wall of the lower end of one side of the extraction box 1, and the output end of the nitrogen storage box 8 passes through the outer wall of the extraction box 1 and is arranged in the inner cavity of the extraction box 1.

[0032] An extraction inner groove 11 is provided in the middle inner cavity of the extraction box 1, a feed port 12 is provided in the middle of one end of the top surface of the extraction box 1, and an income inner groove 13 is provided on the inner wall of the other end of the inner cavity of the feed port 12, an inner wall slide 14 is provided on the middle inner wall of the upper end of the inner cavity of one end of the extraction inner groove 11, and a bottom mounting groove 15 is provided on the inner cavity bottom surface of the inner wall slide 14, and a bottom inner groove 16 is provided in the middle inner cavity of the lower end of the extraction box 1. A plurality of through-holes 17 are evenly arranged on the inner cavity bottom surface of the extraction inner groove 11, and the through-holes 17 are respectively connected to the bottom inner groove 16, and an income bottom groove 18 is provided on the inner cavity bottom surface of the bottom inner groove 16, and the bottom of the income bottom groove 18 is connected to the bottom mounting groove 15. The bottoms of the grooves 15 are connected by an L-shaped through hole 19, and an insertion side hole 190 is provided on the outer wall of the lower end of the other side of the extraction box 1, and the insertion side hole 190 is connected to the extraction inner groove 11. A horizontal limiting block 20 is fixedly installed on the inner wall of one end of the upper end of the inner cavity of the extraction inner groove 11, and the horizontal limiting block 20 is arranged at the upper inner end of the inner wall slide groove 14, and a baffle 111 is fixedly installed on the middle inner wall of the upper end of the inner cavity of the extraction inner groove 11, and a pair of semicircular card grooves 1901 are respectively provided on the inner walls at both ends of the inner cavity of the insertion side hole 190, a through sliding hole 201 is provided in the middle of the horizontal limiting block 20, and a card-connecting bottom groove 202 is provided on the bottom surface of the inner cavity of the through sliding hole 201.

[0033] The inclined placement plate 4 includes a vertical slider 41 and an inclined plate 43 fixedly installed on the outer wall of the lower end of the inner end of the vertical slider 41. The vertical slider 41 is elastically slidably installed in the inner wall slide groove 14 by a connecting spring 42. A pushing slider 44 is slidably installed in the slide hole 201, and a pushing block 45 is installed in the inner cavity of the pushing slider 44. A pushing groove 411 is provided on the outer wall of the inner end of the upper end of the vertical slider 41, and inclined slide grooves 412 are respectively provided on the inner walls on both sides of the inner cavity of the pushing groove 411. Connecting slide shafts 441 are respectively fixedly installed on the outer walls on both sides of one end of the pushing slider 44, and the connecting slide shafts 441 are respectively slidably set in the inclined slide grooves 412. An installation receiving groove 442 is provided on the outer wall of the other end of the pushing slider 44. A bottom connecting hole 443 is provided at one end of the bottom surface of the pushing slider 44. The connecting hole 443 is arranged corresponding to the card-engaging bottom groove 202, and a return spring 451 is installed on the outer wall of one end of the pushing block 45, and the pushing block 45 is elastically slidably installed in the installation income groove 442 through the return spring 451. A bottom pushing groove 452 is provided at one end of the bottom surface of the pushing block 45, and inclined pushing grooves 453 are respectively provided on the inner walls on both sides of the inner cavity of the bottom pushing groove 452. A sliding block 454 is slidably installed through the bottom connecting hole 443, and vertical pushing slide shafts 455 are respectively fixedly installed on the outer walls on both sides of the upper end of the sliding block 454, and the vertical pushing slide shafts 455 are respectively slidably set in the inclined pushing grooves 453. By pushing the block 45, the pushing slider 44 is clamped and fixed on the horizontal limiting block 20 as a whole, so that the position of the inclined plate 43 can be fixed, thereby ensuring that the raw coal falling on the inclined plate 43 will not slide.

[0034] The electric blocking plate 5 includes an electric telescopic column 51 and a sealing plate 52 embedded and slidably installed in the inner groove 13, and a lower protrusion 53 is fixedly installed on the bottom surface of the front end of the sealing plate 52, and the lower protrusion 53 is fixedly installed on the output end of the electric telescopic column 51.

[0035] Specifically, when the raw coal continuously enters the extraction inner groove 11 from the feeding port 12, the raw coal can be continuously intercepted and collected on the inclined placement plate 4 under the blocking effect of the shielding plate 111. When gas needs to be extracted, the electric telescopic column 51 can be started, and the output end of the electric telescopic column 51 will drive the sealing plate 52 to move forward through the lower protrusion 53. In the process of the sealing plate 52 blocking the feeding port 12, the surface of the lower protrusion 53 will first contact the inner end surface of the pushing block 45, and the lower protrusion 53 will push the pushing block 45 to slide to one end relative to the pushing slider 44. Under the limiting effect of the vertical push slide shaft 455 and the inclined push groove 453, the sliding block 454 can be driven to move upward, so that the lower end of the sliding block 454 is pulled out from the clamping bottom groove 202, and then the slider 44 is pushed by squeezing. Under the limiting action of the connecting slide shaft 441 and the inclined slide groove 412, the vertical slider 41 can be pushed downward, and the vertical slider 41 will drive the inclined plate 43 to move downward, so that one end of the inclined plate 43 passes over the baffle 111. Under the action of the inclined surface of the inclined plate 43, the raw coal can be continuously dropped from the inclined plate 43 to the bottom of the extraction inner tank 11, thereby breaking the raw coal. When gas continuously runs out from the cracks in the raw coal, it can be collected in the extraction inner tank 11. After that, by starting the nitrogen storage box 8, nitrogen is continuously discharged into the extraction inner tank 11, and at the same time, the suction box 7 is started to continuously absorb air and gas, so that gas collection can be achieved. The structure is cleverly set up, which not only saves the use and manufacturing costs, but also the operator only needs to start the electric telescopic column 51 to achieve multiple effects at the same time. It is convenient and fast to operate and easy to use.

[0036] The crack-promoting lifting plate 6 includes a crack-promoting plate 61 and a first pneumatic telescopic column 62 whose output end is fixedly mounted on the bottom surface of the crack-promoting plate 61, and the first pneumatic telescopic column 62 is embedded and fixedly mounted in the bottom groove 18, and a second pneumatic telescopic column 63 is embedded and fixedly mounted in the inner cavity of the bottom mounting groove 15, and the two ends of the L-shaped through hole 19 are respectively connected to the first pneumatic telescopic column 62 and the second pneumatic telescopic column 63. The crack-promoting plate 61 includes a mounting base 611 and a plurality of crack-promoting rods 612 evenly arranged and fixedly mounted on the top surface of the mounting base 611, and the crack-promoting rods 612 are respectively slidably mounted in the through-hole 17, the first pneumatic telescopic column 62 includes an air cylinder 621 and a piston column 622 whose lower end is sealed and slidably mounted in the inner cavity of the air cylinder 621, and the composition and connection relationship of each structure in the second pneumatic telescopic column 63 are the same as the composition and connection relationship of each structure in the first pneumatic telescopic column 62.

[0037] Specifically, when the vertical slider 41 slides downward, it can contact the second pneumatic telescopic column 63, so that the gas in the second pneumatic telescopic column 63 can be pressed into the first pneumatic telescopic column 62 through the L-shaped through hole 19. Under the action of air pressure, the first pneumatic telescopic column 62 can be driven to extend, thereby driving the cracking plate 61 to move upward as a whole, so that the cracking rod 612 protrudes through the socket 17, and can hit the cracking rod 612 when the raw coal falls, thereby improving the cracking effect of the raw coal. When the vertical slider 41 is reset, under the action of the gravity of the cracking plate 61, the first pneumatic telescopic column 62 and the second pneumatic telescopic column 63 can be driven to reset. The structure is cleverly set, and multiple effects can be achieved at the same time by starting the electric telescopic column 51, which is convenient to use.

[0038] In order to solve the technical problem of how to conveniently take out the raw coal fragments from the extraction box 1, as Figure 1-Figure 3 and Figure 11 As shown, the following preferred technical solutions are provided:

[0039] The carbon cleaning frame 3 includes a connecting push plate 31 and a scraper 32 arranged on one side of the connecting push plate 31, and the two ends of the connecting push plate 31 and the scraper 32 are fixedly connected by connecting rods 33 respectively. A concave handle 34 is fixedly installed on the outer wall of the other side of the connecting push plate 31, and a pair of receiving circular grooves 311 are respectively provided on the outer walls of the two ends of the connecting push plate 31, and a semicircular clamping block 312 is elastically slidably installed at the inner cavity opening of the receiving circular groove 311 through an extrusion spring 313. The semicircular clamping block 312 is movably clamped in the semicircular clamping groove 1901 respectively. The arrangement of the semicircular clamping block 312 and the semicircular clamping groove 1901 facilitates the removal and fixation of the connecting push plate 31.

[0040] Specifically, when the operator needs to take out the extracted raw coal, he can pull the concave handle 34 outward, and the connecting push plate 31 will drive the scraper 32 to move outward through the connecting rod 33, and the scraper 32 will scrape out the raw coal on the bottom surface of the extraction inner tank 11. The operation is convenient and quick, and the collection efficiency of the extracted raw coal is improved.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A safe and efficient coal mine gas extraction device, comprising an extraction box (1), characterized in that: A raised frame (2) is fixedly installed at the middle of one end of the top surface of the extraction box (1), a carbon cleaning frame (3) is plugged into the inner cavity of the lower end of the extraction box (1), an inclined placement plate (4) is installed in the inner cavity of one end of the upper end of the extraction box (1), and an electric blocking plate (5) is fixedly installed on the top surface of the other end of the inner cavity of the extraction box (1), a crack-promoting lifting plate (6) is installed at the lower end of the inner cavity of the extraction box (1), a pair of suction boxes (7) are fixedly installed on the outer wall of one end of the upper end of one side of the extraction box (1), and a nitrogen storage box (8) is fixedly installed on the outer wall of the lower end of one side of the extraction box (1); An extraction inner groove (11) is provided in the middle inner cavity of the extraction box (1), a feed port (12) is provided at the middle of one end of the top surface of the extraction box (1), an inner groove (13) is provided on the inner wall of the other end of the inner cavity of the feed port (12), an inner wall slide groove (14) is provided on the middle inner wall of the upper end of one end of the inner cavity of the extraction inner groove (11), a bottom mounting groove (15) is provided on the inner cavity bottom surface of the inner wall slide groove (14), a bottom inner groove (16) is provided in the middle inner cavity of the lower end of the extraction box (1), and a plurality of through grooves (11) are evenly arranged on the inner cavity bottom surface. The insertion hole (17) is connected to the bottom inner groove (16) respectively. The bottom surface of the inner cavity of the bottom inner groove (16) is provided with an intake bottom groove (18). The bottom of the intake bottom groove (18) is connected to the bottom of the bottom mounting groove (15) through an L-shaped through hole (19). An insertion side hole (190) is provided on the outer wall of the lower end of the other side of the extraction box (1). A transverse limiting block (20) is fixedly installed on the inner wall of one end of the inner cavity of the extraction inner groove (11), and the transverse limiting block (20) is provided at the inner end of the upper end of the inner wall slide groove (14); A shielding plate (111) is fixedly mounted on the middle inner wall of the upper end of the inner cavity of the extraction inner groove (11), a pair of semicircular clamping grooves (1901) are respectively provided on the inner walls of both ends of the inner cavity of the insertion side hole (190), a through sliding hole (201) is provided at the middle of the transverse limiting block (20), and a clamping bottom groove (202) is provided on the bottom surface of the inner cavity of the through sliding hole (201); The inclined placement plate (4) includes a vertical slider (41) and an inclined plate (43) fixedly mounted on the outer wall of the lower end of the inner end of the vertical slider (41). The vertical slider (41) is elastically slidably mounted in the inner wall slide groove (14) through a connecting spring (42). A push slider (44) is slidably mounted through the slide hole (201), and a push block (45) is mounted in the inner cavity of the push slider (44). A pushing groove (411) is provided on the outer wall of the inner end of the upper end of the vertical slider (41), and inclined sliding grooves (412) are respectively provided on the inner walls on both sides of the inner cavity of the pushing groove (411); Connecting slide shafts (441) are fixedly mounted on the outer walls on both sides of one end of the push slider (44), and the connecting slide shafts (441) are slidably arranged in the inclined slide grooves (412). An installation receiving groove (442) is arranged on the outer wall of the other end of the push slider (44), and a bottom communicating hole (443) is arranged at one end of the bottom surface of the push slider (44); A return spring (451) is installed on the outer wall of one end of the push card block (45), and the push card block (45) is elastically slidably installed in the installation receiving groove (442) through the return spring (451), a bottom push groove (452) is provided at one end of the bottom surface of the push card block (45), and inclined push grooves (453) are respectively provided on the inner walls on both sides of the inner cavity of the bottom push groove (452), and a sliding card block (454) is slidably installed through the bottom communicating hole (443), and vertical push slide shafts (455) are respectively fixedly installed on the outer walls on both sides of the upper end of the sliding card block (454), and the vertical push slide shafts (455) are respectively slidably provided in the inclined push grooves (453); The crack-promoting lifting plate (6) comprises a crack-promoting plate (61) and a first pneumatic telescopic column (62) whose output end is fixedly mounted on the bottom surface of the crack-promoting plate (61), and the first pneumatic telescopic column (62) is embedded and fixedly mounted in the bottom groove (18), and a second pneumatic telescopic column (63) is embedded and fixedly mounted in the inner cavity of the bottom mounting groove (15); The crack-promoting plate (61) includes a mounting base plate (611) and a plurality of crack-promoting rods (612) evenly arranged and fixedly mounted on the top surface of the mounting base plate (611); The first pneumatic telescopic column (62) includes an air storage cylinder (621) and a piston column (622) with a lower end sealed and slidably mounted in the inner cavity of the air storage cylinder (621). The composition and connection relationship of each structure in the second pneumatic telescopic column (63) are the same as the composition and connection relationship of each structure in the first pneumatic telescopic column (62); The carbon cleaning frame (3) includes a connecting push plate (31) and a scraper (32) arranged on one side of the connecting push plate (31), and the two ends between the connecting push plate (31) and the scraper (32) are fixedly connected by connecting rods (33), and a concave handle (34) is fixedly installed on the outer wall of the other side of the connecting push plate (31).

2. A safe and efficient coal mine gas extraction device according to claim 1, characterized in that: The electric blocking plate (5) comprises an electric telescopic column (51) and a sealing plate (52) embedded and slidably mounted in the inner groove (13), and a lower protrusion (53) is fixedly mounted on the front bottom surface of the sealing plate (52), and the lower protrusion (53) is fixedly mounted on the output end of the electric telescopic column (51).

3. A safe and efficient coal mine gas extraction device according to claim 2, characterized in that: A pair of receiving circular grooves (311) are respectively provided on the outer walls of both ends of the connecting push plate (31), and a semicircular clamping block (312) is elastically slidably installed at the inner cavity opening of the receiving circular groove (311) through an extrusion spring (313), and the semicircular clamping block (312) is movably clamped in the semicircular clamping groove (1901).

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