WO2025130075A1 - Downhole extraction pipeline blockage clearing apparatus - Google Patents

Abstract

The present invention relates to a downhole extraction pipeline blockage clearing apparatus, comprising a frame, a hose wind-up apparatus, an advancing apparatus, a high pressure pump set, a hydraulic pipe, a self-advancing blockage clearing spray head, and a control system; the hose wind-up apparatus, the advancing apparatus, and the high pressure pump group are all connected to the control system and are controlled by the control system; the hydraulic hose is wound on the hose wind-up apparatus, and wind-up of the hydraulic hose is implemented by means of rotation of the hose wind-up apparatus; the advancing apparatus is located at one side of the hose wind-up apparatus, jointly moves with the hose wind-up apparatus, and holds and transports the hydraulic hose to enter into an extraction pipeline; one end of the hydraulic hose is connected to the high pressure pump group, and the other end is connected to the self-advancing blockage clearing spray head; and the self-advancing blockage clearing spray head performs blockage clearing within the extraction pipeline by means of a jet stream and by means of the high pressure pump group conveying high pressure water to the self-advancing blockage clearing spray head. The spray head of the present invention possesses self-rotation and self-advancing functions, the effect and efficiency of blockage clearing are improved, and manual operation becomes less intensive; and the hose wind-up apparatus and the advancing apparatus implement automated wind-up and transport of the hydraulic hose, preventing the hydraulic hose from becoming tangled and damaged.

Description

Underground extraction pipeline unblocking device Technical Field

The invention belongs to the technical field of pipeline unblocking, and relates to a device for unblocking underground extraction pipelines.

Background Art

The low gas extraction rate in mines in my country is mainly affected by two factors. First, more than 95% of the coal seams mined in my country's high-gas and protruding mines are low-permeability coal seams, which makes coal seam gas extraction very difficult; second, in the actual extraction process of mine gas, a large amount of fissure water and coal slag from the coal rock layer enter the gas extraction pipeline under the combined action of gravity and negative pressure, causing the pipeline to be blocked. Through on-site investigation and actual survey of multiple gas control engineering projects served by our institute, it was found that the gas extraction pipeline network was seriously blocked at key locations such as "low points" and "inflection points" after long-term operation. Some areas even blocked 1/4 to 1/3 of the entire pipeline section. At the same time, coal slag was also dispersed and deposited 30 to 40 meters before and after the key locations such as "low points" and "inflection points". The blockage caused the effective extraction section of the extraction pipeline to decrease sharply and the pressure loss of the extraction negative pressure to increase significantly, which significantly increased the additional power of the gas extraction equipment and significantly reduced the gas extraction efficiency. In severe cases, it may even cause the entire gas extraction system to fail completely.

In response to the problem of easy blockage of gas extraction pipes, some coal enterprises and research institutes have developed supporting slag removal technology and equipment. At present, most mines in my country mainly use negative pressure water dischargers and other equipment to solve the problem of water discharge from gas extraction pipes. However, through investigation, it is found that after long-term operation, the negative pressure water dischargers currently used in mines often fail to open and close normally due to the blockage of coal slag in the gas extraction pipes and the frequent maintenance of the negative pressure water dischargers. Huainan Mining Group has developed a combined filtering and slag removal device, which adds a control gate valve in the middle to divide the slag remover into two upper and lower chambers. When the extraction system is operating normally, the gate valve is opened, and the coal slag pumped over can fall along the baffle to the bottom of the tank and separate from the gas. When removing the slag, the gate valve is closed to separate the lower chamber from the upper chamber, and the upper chamber can continue to be extracted because the lower chamber is separated from the negative pressure. The slag removal operation can be carried out by opening the air vent, but this method requires the use of manual control of the gate valve to complete the fixed-point slag removal operation, which is only suitable for intercepting coal slag at the front end of the drilling site. At the same time, this method is used to artificially increase the resistance of the extraction system; North China University of Science and Technology has developed a A visual water drainage and slag removal system for gas extraction pipelines, which is controlled by a solenoid valve. The large-box water drainer has high water discharge efficiency, strong reliability and slag removal function. However, due to its large size, this method is only suitable for pipelines such as gas extraction main pipes, and belongs to fixed-point slag removal. Our institute has also developed a new type of drawer-type slag remover for gas extraction pipelines. The screen baffle of the slag remover adopts a drawer-type structure design, which has the characteristics of optional screen and easy cleaning. It has high slag removal efficiency and convenient maintenance. It is suitable for installation in gas extraction main pipes, trunk pipes and branch pipes. However, this method also requires manual cleaning, and the screen baffle of the slag remover is easy to get blocked and requires frequent maintenance.

The above research has successively formed gas extraction pipeline supporting slag removal equipment of different forms and principles, but the research results have not been widely used in mines across the country. The main reasons include two aspects: first, the above slag removal equipment itself is easy to clog and requires regular maintenance by a dedicated person; second, the above technology and equipment belong to "passive" slag removal. Since most of the coal slag cannot enter the slag removal equipment installed at the bottom of the extraction pipeline by negative pressure, the slag deposited along the wall of the gas extraction pipeline cannot be effectively removed. If the mine wants to clean the slag deposited on the wall of the gas extraction pipeline, it must go through the following process: stop the extraction of the mining face or goaf, dismantle the pipeline and use physical means to clean it, reinstall the extraction pipeline, and finally resume gas extraction. This method seriously affects the continuous extraction and safe production of the mining face of the mine, and the general length of the extraction pipeline network underground in coal mines is tens of thousands of meters. Manual disassembly and installation of pipelines is time-consuming and labor-intensive and poses great safety hazards.

Therefore, in view of the difficulties that the existing slag removal technology and equipment are fixed-point removal, easy to clog and time-consuming and labor-intensive, it is urgent to develop a new slag removal technology and equipment to effectively remove the coal slag dispersedly deposited in the gas extraction pipeline network and improve the efficiency of coal seam gas extraction.

Summary of the invention

In view of this, the object of the present invention is to solve the above-mentioned problem and provide a device for clearing blockage in an underground extraction pipeline.

In order to achieve the above object, the present invention provides the following technical solutions:

A device for unblocking underground extraction pipelines, comprising a frame, a tube reel, a propulsion device, a high-pressure pump group, a hydraulic pipe, a self-propelled unblocking nozzle and a control system; the tube reel, the propulsion device and the high-pressure pump group are all connected to the control system and controlled by the control system; the hydraulic pipe is wound around the tube reel, and the reeling of the hydraulic pipe is achieved by the rotation of the tube reel; the propulsion device is located on one side of the tube reel, and is linked with the tube reel to clamp and push the hydraulic pipe into the extraction pipeline; one end of the hydraulic pipe is connected to the high-pressure pump group, and the other end is connected to the self-propelled unblocking nozzle, and high-pressure water is transported to the self-propelled unblocking nozzle by the high-pressure pump group, and the self-propelled unblocking nozzle performs unblocking operations in the extraction pipe by jetting.

Furthermore, the tube reel device includes a base, a reel, and a tube reel motor; the base is fixed on the frame, the reel is rotatably disposed on the base, and the hydraulic pipe is spirally wound on the reel; the reel is transmission-connected to the tube reel motor and rotates when driven by the tube reel motor.

Furthermore, a swinging guide mechanism is provided between the tube reel device and the propulsion device; the swinging guide mechanism includes a swinging guide wheel, a slider, and a swinging bracket; the swinging bracket is provided on a base and is located between the tube reel device and the propulsion device; a slide rail arranged along the rotation axis direction of the tube reel device is provided on the swinging bracket, and the slider is slidably provided on the slide rail; the swinging guide wheels are arranged up and down and are rotatably provided on the slider, the hydraulic pipe passes through between the swinging guide wheels, and the slider slides as the position of the hydraulic pipe on the tube reel device changes, thereby guiding and supporting the hydraulic pipe.

Furthermore, the propulsion device includes a propulsion bracket, an upper plate, a lower plate, a pushing motor, and a clamping cylinder; the lower plate is fixedly mounted on the propulsion bracket; the upper plate is slidably connected to the propulsion bracket and is located above the lower plate; a driving wheel is rotatably provided on the lower plate, and the driving wheel is transmission-connected to the pushing motor through a reducer; a passive wheel is rotatably provided on the upper plate, and the clamping The tightening cylinder is fixed on the propulsion bracket and connected to the upper plate to drive the upper plate to slide; the passive wheel and the driving wheel are arranged opposite to each other, and when the clamping cylinder drives the upper plate to move downward, the passive wheel and the driving wheel clamp the hydraulic pipe, and the driving wheel is driven to rotate by the pushing motor, thereby driving the hydraulic pipe forward or backward; a positioning frame is fixedly provided on one side of the propulsion bracket, and a positioning hole is provided on the positioning frame. The hydraulic pipe passes through the positioning hole and is limited by the positioning hole.

Furthermore, the self-propelled unclogging nozzle includes a shell, a rotating nozzle, and a tail stock; the rotating nozzle is rotatably arranged at the front end of the shell, the tail stock is fixedly arranged at the rear end of the shell, and the tail stock is provided with an interface for connecting to a hydraulic pipe; the tail stock is provided with a first water flow channel arranged axially and communicating with the interface, and a second water flow channel and a third water flow channel arranged radially and both communicating with the first water flow channel; the rotating nozzle is provided with a front nozzle and a rotating nozzle communicating with the first water flow channel, the end of the second water flow channel is provided with a rear nozzle opening toward the rear of the tail stock; the end of the third water flow channel is provided with a side nozzle opening toward the side of the shell; the rotating nozzle self-rotates under the jet drive of the rotating nozzle, and the tail stock drives the shell to move forward under the jet drive of the rear nozzle.

Furthermore, the rotating nozzle includes a rotating head and a rotating shaft; the rotating head is fixedly arranged at one end of the rotating shaft, and the other end of the rotating shaft extends into the shell and is mounted on the first water flow channel; a spiral groove is arranged on the tail seat, and the spiral groove is located between the rotating shaft and the first water flow channel to form a spiral water flow channel; one end of the spiral water flow channel is connected with the first water flow channel, and the other end is connected with the third water flow channel; the front nozzle is located at the center of the rotating head, and the rotating nozzle is arranged on one side of the front nozzle, and the opening direction is inclined toward the circumference of the rotating head; the rotating nozzle has one or multiple nozzles are distributed in a circular array; there are multiple side nozzles and rear nozzles, and they are all distributed in a circular array.

Furthermore, a concave step is provided at one end of the rotating shaft away from the rotating head, and a buffer cavity is formed between the concave step and the tail seat; the buffer cavity is located between the third water flow channel and the spiral water flow channel, and is connected to the third water flow channel and the spiral water flow channel.

Furthermore, the rotating shaft is rotatably arranged in the housing through a composite needle roller bearing; a limiting boss is provided on the rotating shaft, and the composite needle roller bearing contacts the limiting boss and is limited by the limiting boss; a Gley ring dynamic seal is provided between the rotating shaft and the housing.

Furthermore, it also includes a protective shell, which is fixed on the frame, and the pipe winding device, propulsion device, and high-pressure pump group are all arranged in the protective shell; the protective shell is provided with an observation window, and the protective shell is also provided with a lifting ring for lifting and moving.

Furthermore, universal support wheels and directional support wheels are provided at the bottom of the frame, and a braking mechanism is provided on the directional support wheels; a push-pull rod is also provided on the frame for manual push-pull movement; a brake handle is provided on the push-pull rod, and the brake handle is connected to the brake mechanism to control the braking.

The beneficial effects of the present invention are:

1. The present invention adopts a self-advancing nozzle that can realize self-rotation and self-advancing functions, and actively cleans the pipe using high-pressure jets. The hydraulic pipe can be automatically rolled up and pushed to avoid knotting and damage, and the service life of the hydraulic pipe can be improved. The swing guide mechanism can effectively guide the hydraulic pipe to prevent it from knotting or excessive bending. The pneumatic components can adapt to the harsh environment underground and improve the safety and reliability of the device.

2. The present invention has a simple structure, is easy to install, is flexible to operate, and has a low cost, and is suitable for online cleaning and maintenance of gas extraction pipelines in coal mines.

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

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:

FIG1 is an overall schematic diagram of the underground extraction pipeline unblocking device of the present invention.

FIG. 2 is a front view of the underground extraction pipeline unblocking device of the present invention.

FIG. 3 is a top view of FIG. 2 .

FIG. 4 is a left side view of FIG. 2 .

FIG. 5 is a front view of the tube reel device and the propulsion device of the present invention.

FIG. 6 is a top view of FIG. 5 .

FIG. 7 is a left side view of FIG. 5 .

FIG. 8 is a front view of the propulsion device of the present invention.

FIG. 9 is a top view of the propulsion device of the present invention.

FIG. 10 is a left side view of the propulsion device of the present invention.

FIG. 11 is a schematic diagram of the driving wheel transmission structure.

FIG. 12 is a front view of the self-advancing plug-clearing nozzle of the present invention.

FIG. 13 is a schematic diagram of the tailstock in FIG. 12 .

FIG. 14 is a schematic diagram of the rotation axis in FIG. 12 .

Figures 15, 16 and 17 are schematic diagrams of three distribution structures of the rotating nozzles in the present invention.

Figure numerals: 5-self-propelled unblocking nozzle; 6-hydraulic pipe; 11-frame; 12-pipe reel; 13-propulsion device; 14-high-pressure pump group; 15-protection shell; 16-control system; 17-universal support wheel; 18-directional support wheel; 19-brake mechanism; 51-housing; 52-tailstock; 53-rotating head; 54-rotating shaft; 55-composite needle roller bearing; 56-Glay ring; 57-sealing ring; 58-first water flow channel; 521-rear nozzle; 522-side nozzle; 523-spiral groove; 524-interface; 525-second water flow channel; 526-third water flow channel; 531-front nozzle; 532-rotating nozzle; 533-sealing boss; 541-limiting boss; 542-concave step; 111-lifting ring; 112-air source treatment element; 113-ball valve extension rod; 114-push-pull rod; 115-pressure gauge; 116-pressure regulating valve; 117-brake handle; 118-observation window; 121-volume Plate; 122-pipe winding motor; 123-base; 124-support frame; 125-sprocket chain mechanism; 126-swing guide mechanism; 1261-swing bracket; 1262-slide rail; 1263-slider; 1264-swing guide wheel; 127-advance slide rail; 131-advance bracket; 132-clamping cylinder; 133-push motor; 134-upper plate; 135-passive wheel; 136-lower plate; 137-driving wheel; 138-reducer; 139-speed regulating valve; 1311-positioning hole.

DETAILED DESCRIPTION

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.

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.

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.

Please refer to Figures 1 to 17, which show an underground extraction pipeline unblocking device, including a frame 11, a pipe reel 12, a propulsion device 13, a high-pressure pump group 14, a hydraulic pipe 6, a self-propelled unblocking nozzle 5 and a control system 16; the pipe reel 12, the propulsion device 13 and the high-pressure pump group 14 are all connected to the control system 16 and controlled by the control system 16; the hydraulic pipe 6 is wound on the pipe reel 12, and the hydraulic pipe 6 is reeled in by the rotation of the pipe reel 12; the propulsion device 13 is located on one side of the pipe reel 12, and is linked with the pipe reel 12 to clamp and push the hydraulic pipe 6 into the extraction pipeline; one end of the hydraulic pipe 6 is connected to the high-pressure pump group 14, and the other end is connected to the self-propelled unblocking nozzle 5, and high-pressure water is transported to the self-propelled unblocking nozzle 5 through the high-pressure pump group 14, and the self-propelled unblocking nozzle 5 performs unblocking operations in the extraction pipe by jetting.

The pipe reel 12 and the propulsion device 13 are installed on a fixed frame, which includes a base 123 and a support frame 124; the pipe reel 12 is installed on the base 123, and a propulsion slide rail 127 is installed on the support frame 124. The propulsion device 13 is slidably installed on the propulsion slide rail 127, and the position can be adjusted. A swing guide mechanism 126 is installed between the pipe reel 12 and the propulsion device 13; the hydraulic pipe 6 is spirally wound on the pipe reel 12, and the pipe reel 12 rotates to unfold or reel the hydraulic pipe 6; one end of the hydraulic pipe 6 passes through the swing guide mechanism 126 and enters the propulsion device 13, and the propulsion device 13 clamps and pushes the hydraulic pipe 6.

Among them, the swinging guide mechanism 126 includes a swinging guide wheel 1264, a slider 1263, and a swinging bracket 1261; the swinging bracket 1261 is installed on the base 123 and is located between the pipe reel device 12 and the propulsion device 13; a slide rail 1262 arranged along the direction of the rotating axis 54 of the pipe reel device 12 is installed on the swinging bracket 1261, and the slider 1263 is slidably installed on the slide rail 1262; the swinging guide wheel 1264 is arranged up and down and is rotatably installed on the slider 1263, and the hydraulic pipe 6 passes through between the swinging guide wheels 1264, and the slider 1263 slides as the position of the hydraulic pipe 6 on the pipe reel device 12 changes, thereby guiding and supporting the hydraulic pipe 6.

The tube reel device 12 includes a reel 121 and a tube reel motor 122 . The reel 121 is rotatably mounted on a fixed frame, and the tube reel motor 122 is connected to the reel 121 via a sprocket chain mechanism 125 . The tube reel motor 122 drives the reel 121 to rotate.

Among them, the propulsion device 13 includes a propulsion bracket 131, an upper plate 134, a lower plate 136, a pushing motor 133, and a clamping cylinder 132; the lower plate 136 is fixedly installed on the propulsion bracket 131; a slide groove is installed on the propulsion bracket 131, and the upper plate 134 is slidably installed in the slide groove and is located above the lower plate 136; a driving wheel 137 is rotatably installed on the lower plate 136, and the driving wheel 137 is connected to the pushing motor 133 through a reducer 138; a passive wheel 135 is rotatably installed on the upper plate 134, and the clamping cylinder 132 is fixedly installed on the propulsion bracket 131 and connected to the upper plate 134 to drive the upper plate 134 to slide; the passive wheel 135 and the active wheel 137 are arranged opposite to each other, and when the clamping cylinder 132 drives the upper plate 134 to move downward, the passive wheel 135 and the active wheel 137 clamp the hydraulic pipe 6, and the active wheel 137 is driven to rotate by the pushing motor 133, thereby driving the hydraulic pipe 6 to move forward or backward. A positioning frame is fixedly installed on one side of the propulsion bracket 131 , and a positioning hole 1311 is installed on the positioning frame. The hydraulic pipe 6 passes through the positioning hole 1311 and is limited by the positioning hole 1311 .

There are two clamping cylinders 132 installed on the top plate of the propulsion bracket 131. The two clamping cylinders 132 are respectively connected to the two sides of the upper plate 134 to jointly drive the upper plate 134 to slide. The two clamping cylinders 132 are both installed with a speed regulating valve 139; the tube reel motor 122 and the push motor 133 are both pneumatic motors, and the push motor 133, the tube reel motor 122, and the clamping cylinders 132 share a common air source.

Among them, there are multiple driving wheels 137, which are arranged side by side on the lower plate 136, and the driven wheels correspond to the driving wheels 137 one by one; a driving gear is installed at one end of the driving wheel 137, and the reducer 138 is connected to the driving gear for transmission; a transmission gear is installed between adjacent driving wheels 137, and the transmission gear is meshed with the adjacent driving gears on both sides for transmission.

The swing guide wheel 1264, the driving wheel 137 and the driven wheel 135 are all rubber wheels, and arc grooves matching the diameter of the hydraulic pipe 6 are arranged on the wheel surface.

The self-propelled plugging nozzle 5 includes a housing 51, a rotating nozzle, and a tail seat 52; the rotating nozzle is rotatably mounted on the housing. The housing 51 is provided with a front end thereof, and a tail seat 52 is fixedly mounted at the rear end thereof, and the tail seat 52 is provided with an interface 524 for connecting with a water supply pipe; a first water flow channel 58 arranged along the axial direction and communicating with the interface 524, and a second water flow channel 525 and a third water flow channel 526 arranged along the radial direction and both communicating with the first water flow channel 58 are provided in the tail seat 52; a front nozzle 531 and a rotating nozzle 532 communicating with the first water flow channel 58 are provided on the rotating nozzle, the front nozzle 531 is located at the center of the rotating head 53, and the rotating nozzle 532 is installed on one side of the front nozzle 531, and the opening direction is inclined toward the circumference of the rotating head 53.

A rear nozzle 521 opening toward the rear of the tail seat 52 is provided at the end of the second water flow channel 525; a side nozzle 522 opening toward the side of the shell 51 is provided at the end of the third water flow channel 526; the rotating nozzle rotates under the jet drive of the rotating nozzle 532, and the tail seat 52 drives the shell 51 to move forward under the jet drive of the rear nozzle 521.

The rotating spray head includes a rotating head 53 and a rotating shaft 54; the rotating head 53 is fixedly mounted on one end of the rotating shaft 54, and the other end of the rotating shaft 54 extends into the housing 51 and is sleeved on the first water flow channel 58. A spiral groove 523 is provided on the tailstock 52, and the spiral groove 523 is located between the rotating shaft 54 and the first water flow channel 58 to form a spiral water flow channel; one end of the spiral water flow channel is connected to the first water flow channel 58, and the other end is connected to the third water flow channel 526.

A concave step 542 is provided at one end of the rotating shaft 54 away from the rotating head 53, and a buffer cavity is formed between the concave step 542 and the tail seat 52; the buffer cavity is located between the third water flow channel 526 and the spiral water flow channel, and is connected to the third water flow channel 526 and the spiral water flow channel.

The rotating shaft 54 is rotatably mounted in the housing 51 through a composite needle roller bearing 55. A limiting boss 541 is provided on the rotating shaft 54. The composite needle roller bearing 55 contacts the limiting boss 541 and is limited by the limiting boss 541. The rotating shaft 54 and the housing 51 are dynamically sealed by a Gly ring 56. A sealing boss 533 is provided in the rotating head 53. The sealing boss 533 and the rotating shaft 54 are sealed by an end face of a sealing ring 57.

There is one rotating nozzle 532 or multiple rotating nozzles 532 are distributed in a circular array; there are multiple side nozzles 522 and rear nozzles 521, and they are distributed in a circular array.

The underground extraction pipeline unblocking device in this embodiment also includes a protective shell 15, which is fixedly mounted on the frame 11, and the pipe reel device 12, the propulsion device 13, and the high-pressure pump group 14 are all installed in the protective shell 15; a transparent observation window 118 is provided on the protective shell 15 for real-time hydraulic pipe 6 to prevent the hydraulic pipe 6 from getting knotted, and a lifting ring 111 is also installed on the protective shell 15 for lifting and moving. Universal support wheels 17 and directional support wheels 18 are installed at the bottom of the frame 11, and a brake mechanism 19 is installed on the directional support wheel 18; a push-pull rod 114 is also installed on the frame 11 for manual push-pull movement; a brake handle 117 is installed on the push-pull rod 114, and the brake handle 117 is connected to the brake mechanism 19, and the brake is controlled by the brake handle 117.

The hose reel motor 122, propulsion motor, and high-pressure pump unit 14 in this embodiment all use pneumatic components. The high-pressure pump unit 14, propulsion device 13, and hose reel device 12 are connected to the mine compressed air pipeline through the air source processing component 112 using a ball valve, double positive direct, and direct. At the same time, the high-pressure pump unit 14 is connected to the mine water supply pipeline using a ball valve, double positive direct, and direct. A ball valve extension rod 113 should be provided to control the ball valve, and a pressure regulating valve 116 and a pressure gauge 115 are connected to the high-pressure pump group 14 to control the water pressure.

The working process of the underground extraction pipeline unblocking device in this embodiment is as follows:

First, hoist or push the underground extraction pipeline unblocking device to the cleaning port of the gas extraction pipeline, connect one end of the hydraulic pipe 6 to the self-propelled unblocking nozzle 5, and the other end to the high-pressure pump group 14, connect the high-pressure pump group 14 to the mine water supply pipeline, and connect the pipe reel motor 122, the propulsion motor, and the clamping cylinder 132 to the mine compressed air pipeline.

Then, open the clamping cylinder 132 to move the upper plate 134 downward, clamp the hydraulic pipe 6 between the driving wheel 137 and the passive wheel 135, turn on the propulsion motor to rotate the driving wheel 137, drive the hydraulic pipe 6 forward, push the self-propelled unblocking nozzle 5 into the extraction pipeline, open the ball valve, start the high-pressure pump group 14 to start working, and deliver high-pressure water to the self-propelled unblocking nozzle 5.

Next, the self-propelled unclogging nozzle 5 performs unclogging operations in the extraction pipeline, and high-pressure water is ejected from the front nozzle 531, the rotating nozzle 532, the rear nozzle 521, and the side nozzle 522 to form a high-speed water jet to flush and clean the blockages in the extraction pipeline and bring the blockages out of the extraction pipeline. The jet of the rotating nozzle 532 generates a reaction force on the rotating nozzle, causing the rotating nozzle to rotate on the rotating shaft 54, thereby achieving all-round cleaning of the blockages in the extraction pipeline. The jet of the rear nozzle 521 generates a reaction force on the tail seat 52, causing the tail seat 52 to drive the shell 51 to move forward, thereby realizing the self-propelled function of the self-propelled unclogging nozzle 5. The cleaning speed is adjusted by controlling the water pressure during the cleaning process.

Finally, when the self-propelled unblocking nozzle 5 completes the unblocking operation, the high-pressure pump group 14 is turned off, the propulsion motor and the tube reel motor 122 are reversed, and the hydraulic tube 6 is reeled in. The self-propelled unblocking nozzle 5 is taken out of the extraction pipeline to complete a unblocking operation.

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 (10)

A device for clearing blockage in underground extraction pipelines, characterized in that it comprises a frame, a pipe reel, a propulsion device, a high-pressure pump group, a hydraulic pipe, a self-propelled clearing nozzle and a control system; the pipe reel, the propulsion device and the high-pressure pump group are all connected to the control system and controlled by the control system; the hydraulic pipe is wound on the pipe reel, and the reeling of the hydraulic pipe is achieved by rotating the pipe reel; the propulsion device is located on one side of the pipe reel and is linked with the pipe reel to clamp and push the hydraulic pipe into the extraction pipeline; One end of the hydraulic pipe is connected to the high-pressure pump group, and the other end is connected to the self-propelled unblocking nozzle. The high-pressure pump group transports high-pressure water to the self-propelled unblocking nozzle, and the self-propelled unblocking nozzle performs unblocking operations in the extraction pipe through jets. The underground extraction pipeline unblocking device according to claim 1 is characterized in that: the tube reel device includes a base, a reel, and a tube reel motor; the base is fixed on a frame, the reel is rotatably disposed on the base, and the hydraulic pipe is spirally wound on the reel; the reel is transmission-connected to the tube reel motor and rotates when driven by the tube reel motor. The underground extraction pipeline unblocking device according to claim 2 is characterized in that: a swinging guide mechanism is provided between the pipe reel and the propulsion device; the swinging guide mechanism includes a swinging guide wheel, a slider, and a swinging bracket; the swinging bracket is provided on a base and is located between the pipe reel and the propulsion device; the swinging bracket is provided with a slide rail arranged along the rotation axis direction of the pipe reel, and the slider is slidably arranged on the slide rail; the swinging guide wheels are arranged up and down and rotatably arranged on the slider, the hydraulic pipe passes through between the swinging guide wheels, and the slider slides as the position of the hydraulic pipe on the pipe reel changes, thereby guiding and supporting the hydraulic pipe. The underground extraction pipeline unblocking device according to claim 1 is characterized in that: the propulsion device comprises a propulsion bracket, an upper plate, a lower plate, a pushing motor, and a clamping cylinder; the lower plate is fixedly arranged on the propulsion bracket; the upper plate is slidably connected to the propulsion bracket and is located above the lower plate; a driving wheel is rotatably provided on the lower plate, and the driving wheel is transmission-connected to the pushing motor through a reducer; a passive wheel is rotatably provided on the upper plate, and the clamping cylinder is fixedly arranged on the propulsion bracket and connected to the upper plate to drive the upper plate to slide; the passive wheel and the active wheel are arranged opposite to each other, and when the clamping cylinder drives the upper plate to move downward, the passive wheel and the active wheel clamp the hydraulic pipe, and the active wheel is driven to rotate by the pushing motor, thereby driving the hydraulic pipe forward or backward; a positioning frame is fixedly provided on one side of the propulsion bracket, and a positioning hole is provided on the positioning frame, and the hydraulic pipe passes through the positioning hole and is limited by the positioning hole. The underground extraction pipeline unblocking device according to claim 1 is characterized in that: the self-propelled unblocking nozzle comprises a shell, a rotating nozzle and a tail stock; the rotating nozzle is rotatably arranged at the front end of the shell, the tail stock is fixedly arranged at the rear end of the shell, and the tail stock is provided with an interface for connecting to a hydraulic pipe; the tail stock is provided with a first water flow channel arranged axially and communicating with the interface, and a second water flow channel and a third water flow channel arranged radially and both communicating with the first water flow channel; the rotating nozzle is provided with a front nozzle and a rotating nozzle communicating with the first water flow channel, and the end of the second water flow channel is provided with a rear nozzle opening toward the rear of the tail stock; the end of the third water flow channel is provided with a side nozzle opening toward the side of the shell; the rotating nozzle self-rotates under the jet drive of the rotating nozzle, and the tail stock drives the shell to move under the jet drive of the rear nozzle Move forward. According to the underground extraction pipeline unblocking device described in claim 5, it is characterized in that: the rotating nozzle includes a rotating head and a rotating shaft; the rotating head is fixedly arranged at one end of the rotating shaft, and the other end of the rotating shaft extends into the shell and is mounted on the first water flow channel; a spiral groove is provided on the tail seat, and the spiral groove is located between the rotating shaft and the first water flow channel to form a spiral water flow channel; one end of the spiral water flow channel is connected with the first water flow channel, and the other end is connected with the third water flow channel; the front nozzle is located at the center of the rotating head, and the rotating nozzle is arranged on one side of the front nozzle, and the opening direction is inclined toward the circumference of the rotating head; the rotating nozzle has one or multiple nozzles are distributed in a circular array; there are multiple side nozzles and rear nozzles, and they are all distributed in a circular array. According to the underground extraction pipeline unblocking device according to claim 6, it is characterized in that: a concave step is provided at the end of the rotating shaft away from the rotating head, and a buffer cavity is formed between the concave step and the tail seat; the buffer cavity is located between the third water flow channel and the spiral water flow channel, and is connected to the third water flow channel and the spiral water flow channel. The underground extraction pipeline unblocking device according to claim 6 is characterized in that: the rotating shaft is rotatably arranged in the shell through a composite needle roller bearing; a limiting boss is provided on the rotating shaft, and the composite needle roller bearing is in contact with the limiting boss and is limited by the limiting boss; a Gray ring dynamic seal is provided between the rotating shaft and the shell. The underground extraction pipeline unblocking device according to claim 1 is characterized in that it also includes a protective shell, which is fixed on the frame, and the pipe winding device, propulsion device, and high-pressure pump group are all arranged in the protective shell; an observation window is provided on the protective shell, and a lifting ring is also provided on the protective shell for lifting and moving. According to the underground extraction pipeline unblocking device according to claim 1, it is characterized in that: universal support wheels and directional support wheels are provided at the bottom of the frame, and a braking mechanism is provided on the directional support wheels; a push-pull rod is also provided on the frame for manual pushing and pulling; a brake handle is provided on the push-pull rod, and the brake handle is connected to the brake mechanism to control the braking.