Segmented hole sealing extraction device for coal mine extraction

Abstract

The invention belongs to the technical field of coal mine extraction equipment, and relates to a sectional type hole sealing extraction device for coal mine extraction, which comprises an extraction main machine and an extraction pipe, the extraction main machine comprises heat dissipation grids and a connecting pipe, the two groups of heat dissipation grids are respectively arranged at two ends of the extraction main machine, the connecting pipe is arranged on one side of the extraction main machine, and the heat dissipation grids are connected with the extraction main machine. The extraction pipe comprises fixing discs, an adjusting ring, a screw rod, a limiting rod and a positioning block, the two fixing discs are arranged at one end of the outer side of the extraction pipe, the positioning block and the connecting rod can be prevented from falling off through the limiting groove and the limiting block, the adjusting ring can be adjusted left and right between the two fixing discs through the screw rod and the limiting rod, and therefore the extraction pipe is convenient to use. The adjusting ring and the four sets of positioning blocks can make contact with each other by extruding the inclined grooves, the four sets of positioning blocks can be extruded outwards along with movement of the adjusting ring, the positioning blocks make close contact with the inner wall of the extraction hole, the extraction pipe is installed in the extraction hole in a limited mode, and damage to the air bag caused by pipeline displacement is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine extraction equipment and relates to a segmented hole sealing extraction device for coal mine extraction. Background Art

[0002] Coal mine gas extraction is an important part of coal mine safety production. It is done by drilling into coal seams and gas concentration areas, connecting the boreholes to special pipelines, and using extraction equipment to extract gas from coal seams and goafs to the ground for use or discharge into the total return air flow. This process can not only effectively reduce the amount of gas outflow during mining, prevent gas over-limit and accumulation, prevent gas explosions and coal and gas outburst accidents, but also develop and utilize gas as a coal-associated resource, turning harm into benefit.

[0003] However, in the existing coal mine gas extraction technology, there are often some problems in the design of the sealing device. For example, coal mine equipment will vibrate during operation, which can easily cause the pipeline to shift after long-term operation. This displacement may not only damage the sealing airbag and affect the sealing performance of the device, but may also cause gas leakage, reduce extraction efficiency, and even cause safety accidents. In addition, traditional sealing devices often lack an effective positioning mechanism for the pipeline, making the pipeline prone to loosening or falling off during the extraction process, further exacerbating the above problems.

[0004] In response to these problems, some improvement schemes have appeared in the prior art. For example, the patent with application number CN202310278583.3 discloses a coal mine gas extraction sealing device, which ensures that the sealing tube can be in a static and stable sealing state by setting an extrusion component and a locking component in the sealing tube, thereby enhancing the gas extraction sealing effect. However, these schemes still have certain limitations in practical applications, especially when dealing with complex geological conditions and long-term vibration environments, their stability and reliability still need to be improved. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a segmented sealing extraction device for coal mine extraction, which can effectively solve the problem of pipeline displacement, improve the sealing performance, and have good stability and reliability.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a segmented sealing and extraction device for coal mine extraction, comprising:

[0007] The extraction host includes a heat dissipation grille and a connecting pipe, two sets of heat dissipation grilles are respectively arranged at two ends of the extraction host, and the connecting pipe is arranged on one side of the extraction host;

[0008] The extraction tube comprises a fixed disk, an adjusting ring, a screw, a limiting rod and a positioning block, two groups of fixed disks are arranged outside the extraction tube, the adjusting ring is arranged between the two groups of fixed disks, the screw is arranged between the two groups of fixed disks, and the screw penetrates into the inside of the adjusting ring, three groups of limiting rods are arranged between the two groups of fixed disks, and the three groups of limiting rods penetrate into the inside of the adjusting ring, and four groups of positioning blocks are evenly arranged between the two groups of fixed disks;

[0009] Among them, the outer side of the adjusting ring and the inner side of the positioning block are both provided with extrusion bevel grooves. The adjusting ring is adjusted by the screw and the limit rod so that the adjusting ring can contact with the four groups of positioning blocks through the extrusion bevel grooves. As the adjusting ring moves, the four groups of positioning blocks can be squeezed outwards so that the positioning blocks are in close contact with the inner wall of the extraction hole, thereby realizing the limited installation of the extraction tube inside the extraction hole.

[0010] Optionally, limit grooves are provided at the four corners of the positioning block, a connecting rod is provided on the outside of the extraction tube and penetrates into the limit groove, and a limit block is provided at one end of the connecting rod located inside the limit groove. The limit groove and the limit block prevent the positioning block and the connecting rod from falling off.

[0011] Optionally, a plurality of groups of anti-skid grooves are evenly arranged on the outer side of the positioning block, and the friction between the positioning block and the extraction hole is increased through the anti-skid grooves.

[0012] Optionally, an airbag is provided at one end of the outside of the extraction tube away from the adjusting ring, and mounting rings are provided at both ends of the outside of the extraction tube at the airbag. An air nozzle is provided on the outside of a group of mounting rings for injecting air into the airbag to achieve sealing between the extraction tube and the extraction hole.

[0013] Optionally, both ends of the extraction pipe and the end of the connecting pipe away from the extraction main machine are provided with connecting flanges, and the connection between the extraction pipes and the connection between the extraction pipe and the connecting pipe are achieved through the connecting flanges.

[0014] Optionally, an air suction port is provided at the bottom end of one side of the extraction main unit, and an air outlet is provided at the bottom end of the other side of the extraction main unit. The connecting pipe is connected to the extraction main unit through the air suction port, and supporting legs are provided at the four corners of the bottom of the extraction main unit.

[0015] Optionally, a through hole is provided inside the adjusting ring, and the adjusting ring is movably connected to the extraction tube through the through hole. A rotating block is provided at one end of the screw to facilitate the rotation of the screw.

[0016] Optionally, a bearing is provided on one side of a set of fixed disks, and the other end of the screw passes through the inside of the bearing. The screw is rotatably connected to a set of fixed disks through the bearing. A threaded hole matching the screw is provided inside the adjusting ring, and the adjusting ring is threadedly connected to the adjusting ring through the threaded hole.

[0017] Optionally, both ends of the limit rod are respectively welded to two sets of fixed plates, a plurality of limit holes are provided inside the adjustment ring, and the limit rod passes through the limit holes, and the adjustment ring is movably connected to the limit rod through the limit holes.

[0018] Optionally, a movable hole is provided at one end of the positioning block, and the movable hole penetrates into the interior of the limiting groove, the positioning block is movably connected to the connecting rod through the movable hole, and the limiting block is fixedly connected to the extraction tube through the connecting rod.

[0019] The beneficial effects of the present invention are:

[0020] 1) Improved sealing performance: The cooperation between the limit groove and the limit block effectively prevents the positioning block from falling off from the connecting rod, ensuring the structural stability of the device. At the same time, the screw and the limit rod are used to adjust the adjustment ring left and right, and the positioning block is squeezed outward through the extrusion chute, so that the positioning block is in close contact with the inner wall of the extraction hole, thereby achieving a stable installation and sealing of the extraction pipe, effectively avoiding damage to the airbag caused by pipeline displacement, and significantly improving the sealing performance of the device;

[0021] 2) Enhanced stability and reliability: The device structure of the present invention is reasonably designed, and the stability and reliability of the adjustment ring during the adjustment process are ensured through multiple sets of limit rods and threaded adjustment rings. In addition, the anti-slip groove on the outside of the positioning block increases the friction with the inner wall of the extraction hole, further enhancing the fixing effect of the device, so that it can still maintain stable extraction performance under complex geological conditions and long-term vibration environment.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a cross-sectional view of the present invention;

[0026] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0027] Figure 4 It is a cross-sectional view of a pipeline of the present invention;

[0028] Figure 5It is a cross-sectional view of the pipeline of the present invention.

[0029] Figure numerals: 1. extraction main unit; 101. heat dissipation grille; 102. connecting pipe; 2. extraction pipe; 201. fixing plate; 202. adjusting ring; 203. screw; 204. limiting rod; 205. positioning block; 206. extrusion chute; 207. limiting groove; 208. connecting rod; 209. limiting block; 210. anti-skid groove; 3. air bag; 301. mounting ring; 302. air nozzle; 303. connecting flange. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figure 1 to Figure 5, is a segmented sealing and sealing extraction device for coal mine extraction, comprising an extraction host 1 and an extraction pipe 2, the extraction host 1 comprising a heat dissipation grille 101 and a connecting pipe 102, two sets of heat dissipation grilles 101 are respectively arranged at both ends of the extraction host 1, and the heat dissipation grilles 101 are convenient for heat dissipation of the extraction host 1, the connecting pipe 102 is arranged on one side of the extraction host 1, and is convenient for connecting the extraction host 1 with the extraction pipe 2, and the extraction pipe 2 comprises a fixing plate 201, an adjusting ring 202, a screw rod 203, and a limit rod 20 4 and positioning block 205, two groups of fixed disks 201 are arranged outside the extraction tube 2, the adjusting ring 202 is arranged between the two groups of fixed disks 201, the screw rod 203 is arranged between the two groups of fixed disks 201, and the screw rod 203 penetrates into the inside of the adjusting ring 202, and the adjusting ring 202 can be adjusted left and right by the screw rod 203, three groups of limiting rods 204 are arranged between the two groups of fixed disks 201, and the three groups of limiting rods 204 penetrate into the inside of the adjusting ring 202, and the adjusting ring 202 can be adjusted left and right by the limiting rods 204 The adjustment is more stable. The four groups of positioning blocks 205 are evenly arranged between the two groups of fixed plates 201. The four groups of positioning blocks 205 are convenient for limiting the extraction tube 2 inside the extraction hole to prevent the extraction tube 2 from displacement. The outer side of the adjusting ring 202 and the inner side of the positioning block 205 are both provided with an extrusion chute 206. Through the interaction of the extrusion chute 206, the adjusting ring 202 can push the positioning block 205 to move outward, which is convenient for squeezing the four groups of positioning blocks 205 outward. The four corners inside the positioning block 205 A limiting groove 207 is provided on the outer side of the extraction tube 2. A connecting rod 208 penetrating into the limiting groove 207 is provided on one end of the connecting rod 208 located inside the limiting groove 207. A limiting block 209 is provided. The limiting groove 207 and the limiting block 209 can prevent the positioning block 205 and the connecting rod 208 from falling off. A plurality of anti-skid grooves 210 are evenly arranged on the outer side of the positioning block 205. The anti-skid grooves 210 increase the friction between the positioning block 205 and the extraction hole, so as to facilitate the positioning of the extraction tube 2.

[0034] See also Figure 1 , Figure 3 and Figure 4 An air bag 3 is provided at one end of the outside of the extraction tube 2 away from the adjusting ring 202, which can seal the extraction tube 2 and the extraction hole. Mounting rings 301 are provided at both ends of the air bag 3 on the outside of the extraction tube 2, which are convenient for installing and using the air bag 3. An air nozzle 302 is provided on the outside of a group of mounting rings 301, which is convenient for injecting air into the air bag 3 and sealing the extraction hole. Connecting flanges 303 are provided at both ends of the extraction tube 2 and the end of the connecting tube 102 away from the extraction main unit 1. The two groups of extraction tubes 2 can be connected through the connecting flanges 303, and the extraction tube 2 and the connecting tube 102 can also be connected.

[0035] See also Figure 1 , Figure 2 and Figure 5 The bottom end of one side of the extraction main machine 1 is provided with an air suction port, and the bottom end of the other side of the extraction main machine 1 is provided with an air outlet. The connecting pipe 102 is connected to the extraction main machine 1 through the air suction port, and the connecting pipe 102 can be connected to the extraction main machine 1. Support legs are provided at the four corners of the bottom of the extraction main machine 1 to play a supporting effect, which improves the stability of the extraction main machine 1. A through hole is provided inside the adjusting ring 202, and the adjusting ring 202 is movably connected to the extraction pipe 2 through the through hole. The adjusting ring 202 and the extraction pipe 2 can be movably adjusted through the through hole. A rotating block is provided at one end of the screw rod 203 to facilitate the rotation of the screw rod 203. A bearing is provided on one side of a group of fixed disks 201, and the other end of the screw rod 203 penetrates into the inside of the bearing. The screw rod 203 is rotatably connected to a group of fixed disks 201 through the bearing. The rotation of the screw rod 203 is more stable through the bearing. A threaded hole matching the screw rod 203 is provided inside the adjusting ring 202, and the adjusting ring 202 is threadedly connected to the adjusting ring 202 through the threaded hole. The limiting adjustment effect can provide power for the left and right adjustment of the adjusting ring 202. The two ends of the limiting rod 204 are respectively welded to the two sets of fixed plates 201. The interior of the adjusting ring 202 is provided with multiple sets of limiting holes, and the limiting rod 204 penetrates into the limiting holes. The adjusting ring 202 is movably connected with the limiting rod 204 through the limiting holes. The limiting rod 204 can limit the adjusting ring 202, and the adjusting ring 202 can be stably adjusted left and right to prevent the adjusting ring 202 from rotating. The positioning block 2 A movable hole is provided at one end of 05, and the movable hole penetrates into the limiting groove 207. The positioning block 205 is movably connected to the connecting rod 208 through the movable hole. The positioning block 205 and the connecting rod 208 can be moved through the movable hole. The limiting block 209 is fixedly connected to the extraction tube 2 through the connecting rod 208. The limiting block 209 and the extraction tube 2 can be fixed through the connecting rod 208 to avoid the positioning block 205 and the limiting rod 208 from falling off, which is convenient for the installation and use of the positioning block 205.

[0036] See also Figure 1 ,and Figure 2 and Figure 5A mounting groove is provided on one side of the mounting ring 301, and both ends of the airbag 3 are detachably fixedly connected to the two groups of mounting rings 301 through the mounting grooves, so that the airbag 3 can be installed between the two groups of mounting rings 301. A mounting hole is provided on the outer side of a group of mounting rings 301, and the air nozzle 302 is detachably connected to a group of mounting rings 301 through the mounting hole, so that the air nozzle 302 can be installed on a group of mounting rings 301, which is convenient for gas injection into the airbag 3 and sealing between the extraction tube 2 and the extraction hole. One end of the extraction tube 2 is detachably connected to the connecting pipe 102 through the connecting flange 303, fixing bolts and nuts. The extraction tube 2 is connected to the extraction host 1 through the connecting pipe 102, and the two groups of extraction tubes 2 can be spliced ​​and used. The extraction tube 2 can be connected to the extraction host 1 through the connecting pipe 102.

[0037] Working principle: When the present invention is in use, the extraction tube 2 is placed inside the extraction hole, and a tool (such as an extended wrench) is used to rotate the rotating block at one end of the screw rod 203. The screw rod 203 rotates and cooperates with the threaded hole inside the adjusting ring 202, so that the adjusting ring 202 can be adjusted left and right. The adjusting ring 202 and the limiting rod 204 can slide through the limiting hole, so that the adjustment of the adjusting ring 202 is more stable. Through the interaction of the extrusion inclined groove 206, the adjusting ring 202 squeezes the four groups of positioning blocks 205 outwards, and the positioning block 205 and the connecting rod 208 can be moved through the movable hole, and the positioning block 209 and the limiting groove 207 can be adjusted. 5 is limited between the positioning block 205 and the connecting rod 208 to prevent the positioning block 205 from falling off from the connecting rod 208. As the positioning block 205 moves forward, the anti-skid groove 210 on the outside of the positioning block 205 is in close contact with the inner wall of the extraction hole, so that the extraction pipe 2 is limited inside the extraction hole to avoid displacement of the pipeline and damage to the airbag 3. The air pump and the air pipe are connected to the air nozzle to inject steam into the airbag 3, so that the airbag 3 is in close contact with the inner wall of the extraction hole, and the extraction hole is sealed to avoid gas leakage. The gas is extracted through the extraction host 1, the connecting pipe 102 and the extraction pipe 2, so that the use effect of the sealed extraction device is better.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A segmented sealing extraction device for coal mine extraction, characterized in that: include: The extraction host includes a heat dissipation grille and a connecting pipe, two sets of heat dissipation grilles are respectively arranged at two ends of the extraction host, and the connecting pipe is arranged on one side of the extraction host; The extraction tube comprises a fixed disk, an adjusting ring, a screw, a limiting rod and a positioning block, two groups of fixed disks are arranged outside the extraction tube, the adjusting ring is arranged between the two groups of fixed disks, the screw is arranged between the two groups of fixed disks, and the screw penetrates into the inside of the adjusting ring, three groups of limiting rods are arranged between the two groups of fixed disks, and the three groups of limiting rods penetrate into the inside of the adjusting ring, and four groups of positioning blocks are evenly arranged between the two groups of fixed disks; Among them, the outer side of the adjusting ring and the inner side of the positioning block are both provided with extrusion bevel grooves. The adjusting ring is adjusted by the screw and the limit rod so that the adjusting ring can contact with the four groups of positioning blocks through the extrusion bevel grooves. As the adjusting ring moves, the four groups of positioning blocks can be squeezed outwards so that the positioning blocks are in close contact with the inner wall of the extraction hole, thereby realizing the limited installation of the extraction tube inside the extraction hole.

2. A segmented sealing extraction device for coal mine extraction according to claim 1, characterized in that: There are limit grooves at the four corners inside the positioning block, and a connecting rod that penetrates into the limit groove is provided on the outside of the extraction tube. A limit block is provided at one end of the connecting rod located inside the limit groove. The limit groove and the limit block prevent the positioning block and the connecting rod from falling off.

3. A segmented sealing extraction device for coal mine extraction according to claim 1, characterized in that: A plurality of anti-skid grooves are evenly arranged on the outer side of the positioning block, and the friction between the positioning block and the extraction hole is increased through the anti-skid grooves.

4. A segmented sealing and extraction device for coal mine extraction according to claim 1, characterized in that: An air bag is provided at one end of the outside of the extraction tube away from the adjusting ring, and mounting rings are provided at both ends of the outside of the extraction tube at the air bag. An air nozzle is provided on the outside of a group of mounting rings for injecting air into the air bag to achieve sealing between the extraction tube and the extraction hole.

5. A segmented sealing extraction device for coal mine extraction according to claim 1, characterized in that: Both ends of the extraction pipe and the end of the connecting pipe away from the extraction main machine are provided with connecting flanges, and the connection between the extraction pipes and the connection between the extraction pipes and the connecting pipe are achieved through the connecting flanges.

6. A segmented sealing extraction device for coal mine extraction according to claim 1, characterized in that: An air suction port is provided at the bottom end of one side of the extraction main machine, and an air outlet is provided at the bottom end of the other side of the extraction main machine. The connecting pipe is connected to the extraction main machine through the air suction port, and supporting legs are provided at the four corners of the bottom of the extraction main machine.

7. A segmented sealing and extraction device for coal mine extraction according to claim 1, characterized in that: A through hole is arranged inside the adjusting ring, and the adjusting ring is movably connected with the extraction tube through the through hole. A rotating block is arranged at one end of the screw rod to facilitate the rotation of the screw rod.

8. A segmented sealing and extraction device for coal mine extraction according to claim 1, characterized in that: A bearing is provided on one side of a set of fixed disks, and the other end of the screw rod penetrates into the bearing. The screw rod is rotatably connected with a set of fixed disks through the bearing. A threaded hole matching the screw rod is provided inside the adjusting ring. The adjusting ring is threadedly connected with the adjusting ring through the threaded hole.

9. A coal mine extraction device using segmented sealing and extraction according to claim 1, characterized in that: The two ends of the limit rod are respectively welded to the two sets of fixed plates, a plurality of limit holes are arranged inside the adjusting ring, and the limit rod passes through the limit holes, and the adjusting ring is movably connected to the limit rod through the limit holes.

10. A segmented sealing extraction device for coal mine extraction according to claim 2, characterized in that: One end of the positioning block is provided with a movable hole, and the movable hole penetrates into the limiting groove. The positioning block is movably connected to the connecting rod through the movable hole, and the limiting block is fixedly connected to the extraction pipe through the connecting rod.

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