Drainage pipe blockage cycle deslagging device

Abstract

This utility model discloses a gas extraction pipeline unblocking and circulating slag removal device, belonging to the field of pipeline unblocking technology. The device includes a support frame, a slag removal chamber, a bend-fitting joint, a float drive mechanism, an arc-shaped flow guide baffle, and an anti-jamming vibrator. The slag removal chamber is fixedly installed on the support surface by the support frame. The bend-fitting joint is connected to the side wall of the slag removal chamber and communicates with the slag discharge port of the extraction pipeline, guiding the water-slag mixture into the chamber. A positive pressure check valve is provided at the top of the chamber, and a negative pressure check valve is provided at the bottom. The float drive mechanism is located inside the chamber and connected to the positive pressure check valve, driving it to open and close according to changes in the liquid level, realizing automatic pressure relief and slag circulation. The arc-shaped flow guide baffle is located at the inlet of the chamber to mitigate the impact of water and slag. The anti-jamming vibrator is installed at the bottom of the chamber to vibrate and prevent coal slag from jamming. This device can operate continuously online, reducing gas leakage, improving unblocking efficiency and safety, and is suitable for mine gas extraction systems.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline unblocking technology, specifically relating to a pipeline unblocking and slag removal device, which is particularly suitable for online cleaning and slag removal of pipeline blockages in mine gas extraction systems. Background Technology

[0002] In my country's mine gas management practices, gas extraction efficiency has long been constrained by two key factors: First, over 95% of high-gas and outburst-prone mines operate in low-permeability coal seams, resulting in poor natural gas outburst conditions and significant extraction difficulties. Second, during extraction, fissure water and coal slag from coal seams enter the extraction pipeline under the combined effects of gravity and negative pressure, causing severe blockages. This blockage problem is not only prevalent in domestic coal mine production but has also become a major bottleneck restricting safe mine production and efficient gas extraction.

[0003] Based on on-site investigations and systematic surveys of multiple gas control projects, it was found that after long-term operation, gas drainage pipelines accumulate large amounts of coal slag and scale at key structural locations such as "low points" and "inflection points," with some areas experiencing blockages covering 1 / 4 to 1 / 3 of the pipeline's cross-section. Furthermore, coal slag is also dispersedly deposited along 30-40 meters before and after these key locations. This blockage drastically reduces the effective flow cross-section for drainage, significantly increasing negative pressure loss. This not only causes abnormal increases in power consumption and decreased drainage efficiency of the gas drainage equipment, but in severe cases, can even lead to the failure of the entire drainage system.

[0004] To address pipeline blockage issues, some coal enterprises and research institutions have developed and applied corresponding slag removal technologies and equipment. Currently, domestic mines commonly use negative pressure water dischargers for pipeline drainage. However, during long-term operation, coal slag entering the discharger with the water flow easily clogs its key component—the "float," causing malfunctions in the opening and closing functions, failure of the automatic water discharge mechanism, and frequent equipment maintenance. This not only increases maintenance costs but also interrupts the continuity of drainage operations. On the other hand, existing methods for cleaning accumulated slag in pipelines typically require stopping gas drainage operations at the mining face or goaf, disassembling the pipeline, physically cleaning the slag, and then reinstalling and resuming drainage. This method not only seriously affects continuous drainage and safe and efficient production in mines but is also extremely labor-intensive, time-consuming, and carries high safety risks when implemented in underground drainage pipeline networks that often stretch for tens of thousands of meters. Furthermore, the impact of large water flows can cause the "float" to oscillate and fluctuate in position, easily triggering slag discharge and affecting slag removal operations. Utility Model Content

[0005] In view of this, the purpose of this utility model is to solve the problem of slag discharge in the process of unblocking and cleaning gas extraction pipelines, and to provide an extraction pipeline unblocking and circulating slag discharge device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A device for unblocking and circulating slag discharge in an extraction pipeline includes a support, a slag discharge chamber, a bend joint, a float drive mechanism, and also includes an arc-shaped flow guide baffle and an anti-jamming vibrator. The slag discharge chamber is fixedly installed on the support surface by the bracket; the bend joint is connected to the side wall of the slag discharge chamber and communicates with the slag discharge port of the extraction pipeline, and is used to guide the water-slag mixture into the slag discharge chamber; The top of the slag discharge chamber is equipped with a positive pressure check valve, and the bottom is equipped with a negative pressure check valve for automatically opening and discharging the water-slag mixture after the pressure in the chamber is balanced. The float drive mechanism is located in the slag discharge chamber and is connected to the positive pressure check valve. It drives the opening and closing of the positive pressure check valve according to the liquid level change to realize automatic pressure relief and slag discharge circulation. The arc-shaped baffle is located at the inlet of the slag discharge chamber, below the outlet of the bend joint, to reduce the impact of the water-slag mixture on the internal components; the anti-jamming vibrator is installed at the bottom of the outer side of the slag discharge chamber, near the negative pressure check valve, to provide vibration to prevent coal slag from jamming.

[0007] Furthermore, both the bending joint and the slag discharge chamber are equipped with quick-connect air pipes, which are connected to each other through connecting air pipes to achieve pressure synchronization and balance.

[0008] Furthermore, the slag discharge chamber is a closed pressure vessel, with a cover plate fixed to its top by bolts and a sealing gasket provided at the joint; the positive pressure one-way valve is installed on the cover plate, and a dust cover is installed on top to prevent external pollutants from entering.

[0009] Furthermore, there are two or more anti-jamming vibrators, which are distributed and installed at the bottom of the outer side of the slag discharge cavity to perform high-frequency micro-amplitude vibration on the slag discharge port to prevent jamming.

[0010] Furthermore, the float drive mechanism includes a guide rod, a limiting block, a movable magnet seat, and a fixed magnetic connector; the guide rod is slidably mounted on the limiting block fixed to the inner wall of the slag discharge chamber; the lower end of the guide rod is connected to the float, and the upper end is opposite to the valve core of the positive pressure check valve, and is provided with the movable magnet seat; the fixed magnetic connector is connected to the valve core of the positive pressure check valve and is opposite to the movable magnet seat, used to maintain the opening of the valve by magnetic assistance.

[0011] Furthermore, the magnetic attraction between the movable magnet base and the fixed magnetic connector is less than the total weight of the float in the air, but after the float rises due to buoyancy, it works together with the remaining buoyancy to maintain the open state of the positive pressure check valve.

[0012] Furthermore, a reed switch for detecting changes in the magnetic field is fixedly installed next to the fixed magnetic connector. The reed switch is electrically connected to the anti-jamming vibrator to form a linkage circuit. When the movable magnet seat is attracted to the fixed magnetic connector, the reed switch closes, triggering the anti-jamming vibrator to start.

[0013] Furthermore, the bend joint is welded to the side wall end cap of the slag discharge cavity, and a sealing gasket is provided between the two; the end of the bend joint away from the slag discharge cavity is connected to the slag discharge port of the extraction pipeline through a connecting pipe and a flange to form a fluid channel.

[0014] The beneficial effects of this utility model are as follows: 1. The device in this utility model adopts an automatic cycle mode of "slag collection-pressure relief-slag discharge-reset," which can continuously clean the water slag accumulated in the pipeline without interrupting the gas extraction operation. The device introduces a float drive mechanism, which uses magnetic force and buoyancy to control the opening and closing of the positive pressure one-way valve, avoiding the problems of float being easily blocked by coal slag and malfunction of opening and closing function in traditional negative pressure water dischargers. In addition, the slag discharge chamber acts as a sealed buffer container, and external air is introduced to achieve pressure isolation during the slag discharge stage, completely separating the slag discharge process from the negative pressure system of the extraction pipeline, eliminating the risk of gas leakage at the source. At the same time, the design of the arc-shaped guide baffle effectively reduces the direct impact of the water slag mixture on the float and internal components, solving the problems of float oscillation, position fluctuation and accidental triggering of slag discharge caused by large water flow impact in the background.

[0015] 2. The entire slag removal and unblocking process requires no manual intervention, relying entirely on intelligent control that integrates buoyancy, magnetism, and vibration. The electrical connection between the reed switch and the anti-jamming vibrator ensures automatic triggering of high-frequency micro-amplitude vibration during slag removal, preventing slag from accumulating and jamming at the discharge port and improving the smoothness of slag removal. This directly addresses the shortcomings of the prior art, such as high labor intensity, long processing time, and high safety risks associated with manual disassembly and assembly, reducing the workers' workload and exposure time to hazardous environments.

[0016] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of the extraction pipeline unblocking and circulating slag discharge device in this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the extraction pipeline unblocking and circulating slag discharge device in this utility model.

[0019] Reference numerals: 43-Support; 41-Slag discharge chamber; 44-Bend joint; 45-Side wall end cap; 451-Sealing gasket; 422-Quick air hose connector; 48-Connecting air hose; 423-Arc-shaped flow guide baffle; 419-Cover plate; 413-Sealing gasket; 411-Positive pressure check valve; 412-Dust cover; 415-Negative pressure check valve; 417-Guide rod; 424-Limit block; 418-Modible magnet seat; 421-Fixed magnetic connector; 416-Float ball; 420-Reed switch; 47-Anti-jamming vibrator. Detailed Implementation

[0020] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0021] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0022] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] like Figures 1-2The diagram shows a slag removal and circulation device for a drainage pipeline, comprising a support 43, a slag removal chamber 41, a bend-fitting connector 44, a float drive mechanism, an arc-shaped guide baffle 423, and an anti-jamming vibrator 47. The slag removal chamber 41 is fixedly mounted on a support surface via the support 43, ensuring the overall stability of the device and facilitating maintenance. The bend-fitting connector 44 is connected to the side wall of the slag removal chamber 41 and communicates with the slag discharge port of the drainage pipeline, guiding the water-slag mixture into the slag removal chamber 41.

[0024] The top of the slag discharge chamber 41 is equipped with a positive pressure check valve 411, and the bottom is equipped with a negative pressure check valve 415 for automatically opening and discharging the water-slag mixture after the pressure in the chamber is balanced. A float drive mechanism is located in the slag discharge chamber 41 and is connected to the positive pressure check valve 411. The float drive mechanism drives the opening and closing of the positive pressure check valve 411 according to the liquid level change, thereby realizing automatic pressure relief and slag discharge circulation.

[0025] An arc-shaped baffle 423 is located at the inlet of the slag discharge chamber 41, below the outlet of the bend connector 44, to reduce the impact of the water-slag mixture on the internal components. An anti-jamming vibrator 47 is installed at the bottom outside the slag discharge chamber 41, near the negative pressure check valve 415, to provide vibration to prevent slag from jamming.

[0026] Both the elbow joint 44 and the slag discharge chamber 41 are equipped with quick-connect air pipes 422, which are connected to each other through connecting air pipes 48 to achieve pressure synchronization and balance.

[0027] The slag discharge chamber 41 is a closed pressure vessel, with a cover plate 419 bolted to its top and a sealing gasket 413 at the joint. A positive pressure check valve 411 is installed on the cover plate 419, and a dust cover 412 is installed on top to prevent external contaminants from entering.

[0028] Two or more anti-jamming vibrators 47 are distributed and installed at the bottom of the outer side of the slag discharge chamber 41 to perform high-frequency micro-amplitude vibration on the slag discharge port to prevent jamming.

[0029] The float drive mechanism includes a guide rod 417, a limiting block 424, a movable magnet seat 418, and a fixed magnetic connector 421. The guide rod 417 is slidably mounted on the limiting block 424, which is fixed to the inner wall of the slag discharge chamber 41. The lower end of the guide rod 417 is connected to the float 416, and the upper end is opposite to the valve core of the positive pressure check valve 411, and is provided with a movable magnet seat 418. The fixed magnetic connector 421 is connected to the valve core of the positive pressure check valve 411 and is opposite to the movable magnet seat 418, used to maintain the opening of the valve by magnetic assistance.

[0030] The magnetic attraction between the movable magnet base 418 and the fixed magnetic connector 421 is less than the total weight of the float 416 in the air. However, after the float 416 floats up due to buoyancy, it works together with the remaining buoyancy to maintain the open state of the positive pressure check valve 411.

[0031] A reed switch 420 for detecting changes in the magnetic field is fixedly installed next to the fixed magnetic connector 421. The reed switch 420 is electrically connected to the anti-jamming vibrator 47 to form a linkage circuit. When the movable magnet base 418 is attracted to the fixed magnetic connector 421, the reed switch 420 closes, triggering the anti-jamming vibrator 47 to start.

[0032] The elbow joint 44 is welded to the side wall end cap 45 of the slag discharge chamber 41, and a sealing gasket 451 is provided between the two. The end of the elbow joint 44 away from the slag discharge chamber 41 is connected to the slag discharge port of the extraction pipeline through a connecting pipe and a flange to form a fluid channel.

[0033] The device achieves automatic unblocking and slag removal through the following working cycle: Slag collection and negative pressure maintenance stage: The water-slag mixture enters the bottom of the slag discharge chamber 41 from the gas extraction pipeline through the bend joint 44. At this time, both the positive pressure check valve 411 and the second negative pressure check valve 415 are closed, and the slag discharge chamber 41 maintains the extraction negative pressure.

[0034] Liquid level triggering and automatic pressure relief stage: As the liquid level rises, the float 416 generates buoyancy and drives the guide rod 417 upward. When the guide rod 417 rises to a specific position, the movable magnet seat 418 engages with the fixed magnetic connector 421. The combined action of magnetic force and buoyancy opens and maintains the positive pressure one-way valve 411, allowing external air to enter the top of the slag discharge chamber 41, raising its internal pressure to atmospheric pressure. At the same time, the magnetic field of the movable magnet seat 418 triggers the reed switch 420 to close, activating the anti-jamming vibrator 47 to perform high-frequency micro-amplitude vibration on the slag discharge port.

[0035] Slag discharge stage: After the pressure inside the cavity is balanced, the water and slag mixture accumulated at the bottom is smoothly pushed open by static pressure and vibration and discharged.

[0036] Automatic reset phase: After the liquid level drops and the float 416 separates from the liquid, its gravity overcomes the magnetic attraction, driving the guide rod 417 downward, causing the movable magnet seat 418 to separate from the fixed magnetic connector 421. The positive pressure check valve 411 then closes, and simultaneously, the reed switch 420 disconnects due to the magnetic field moving away, and the anti-jamming vibrator 47 stops working. The extraction negative pressure quickly restores the slag discharge chamber 41 to a negative pressure state, and the second negative pressure check valve 415 automatically closes. The device completes one working cycle and prepares to begin the next cycle.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for unclogging and circulating slag discharge in a pumping pipeline, comprising a support frame, a slag discharge chamber, a bend-fitting joint, and a float drive mechanism, characterized in that, It also includes arc-shaped flow guide baffles and anti-jamming vibrators; The slag discharge chamber is fixedly installed on the support surface by the bracket; the bend joint is connected to the side wall of the slag discharge chamber and communicates with the slag discharge port of the extraction pipeline, and is used to guide the water-slag mixture into the slag discharge chamber; The top of the slag discharge chamber is equipped with a positive pressure check valve, and the bottom is equipped with a negative pressure check valve for automatically opening and discharging the water-slag mixture after the pressure in the chamber is balanced. The float drive mechanism is located in the slag discharge chamber and is connected to the positive pressure check valve. It drives the opening and closing of the positive pressure check valve according to the liquid level change to realize automatic pressure relief and slag discharge circulation. The arc-shaped baffle is located at the inlet of the slag discharge chamber, below the outlet of the bend joint, to reduce the impact of the water-slag mixture on the internal components; the anti-jamming vibrator is installed at the bottom of the outer side of the slag discharge chamber, near the negative pressure check valve, to provide vibration to prevent coal slag from jamming.

2. The extraction pipeline unblocking and circulating slag discharge device according to claim 1, characterized in that, Both the bending joint and the slag discharge chamber are equipped with quick-connect air pipes, which are connected to each other through connecting air pipes to achieve pressure synchronization and balance.

3. The extraction pipeline unblocking and circulating slag discharge device according to claim 1, characterized in that, The slag discharge chamber is a closed pressure vessel with a cover plate fixed to its top by bolts and a sealing gasket at the joint. The positive pressure check valve is installed on the cover plate and a dust cover is installed on top to prevent external pollutants from entering.

4. The extraction pipeline unblocking and circulating slag discharge device according to claim 1, characterized in that, The anti-jamming vibrator consists of two or more devices, which are distributed and installed at the bottom of the outer side of the slag discharge cavity to perform high-frequency micro-amplitude vibration on the slag discharge port to prevent jamming.

5. The extraction pipeline unblocking and circulating slag discharge device according to claim 1, characterized in that, The float drive mechanism includes a guide rod, a limiting block, a movable magnet seat, and a fixed magnetic connector. The guide rod is slidably mounted on the limiting block fixed to the inner wall of the slag discharge chamber. The lower end of the guide rod is connected to the float, and the upper end is opposite to the valve core of the positive pressure check valve and is provided with the movable magnet seat. The fixed magnetic connector is connected to the valve core of the positive pressure check valve and is opposite to the movable magnet seat, used to maintain the opening of the valve by magnetic assistance.

6. The extraction pipeline unblocking and circulating slag discharge device according to claim 5, characterized in that, The magnetic attraction between the movable magnet base and the fixed magnetic connector is less than the total weight of the float in the air, but after the float rises due to buoyancy, it works together with the remaining buoyancy to maintain the open state of the positive pressure check valve.

7. The extraction pipeline unblocking and circulating slag discharge device according to claim 6, characterized in that, A reed switch for detecting changes in the magnetic field is fixedly installed next to the fixed magnetic connector. The reed switch is electrically connected to the anti-jamming vibrator to form a linkage circuit. When the movable magnet seat is attracted to the fixed magnetic connector, the reed switch closes, triggering the anti-jamming vibrator to start.

8. The extraction pipeline unblocking and circulating slag discharge device according to claim 1, characterized in that, The bend-fitting connector is welded to the side wall end cap of the slag discharge cavity, and a sealing gasket is provided between the two; the end of the bend-fitting connector away from the slag discharge cavity is connected to the slag discharge port of the extraction pipeline through a connecting pipe and a flange to form a fluid channel.

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