Mine filling pipeline system capable of being quickly connected

Abstract

A mine filling pipeline system capable of being rapidly connected comprises a pipe body, and the pipe body is formed by combining a plurality of filling pipes used for forming a main pipeline, a bent pipe used for changing the direction of the pipeline and a filling auxiliary pipe used for flow dividing. The connector assembly is arranged at one end of the filling pipe and used for achieving rapid connection and locking among the filling pipe, the bent pipe and the auxiliary filling pipe, through the arrangement of the connector assembly, an operator can drive the external thread sleeve to be in threaded fit with the internal thread sleeve only by rotating a hand wheel, and therefore the filling pipe can be rapidly connected with the bent pipe, and the auxiliary filling pipe can be rapidly connected with the bent pipe. And then the tensioning rod is driven to move, so that the pressing block tightly presses or breaks away from the flange at the opposite end, and quick connection and disassembly are completed. Meanwhile, uniform axial force is applied under the self-locking action of the threads, so that the sealing gasket elastically deforms and is tightly attached to the end face of the flange, the slurry leakage risk caused by loose connection is eliminated, the operation steps are greatly simplified, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of mining pipeline equipment technology, and in particular to a mine filling pipeline system that can be quickly connected. Background Technology

[0002] In the field of mining, backfilling mining has become one of the mainstream mining techniques due to its effectiveness in controlling ground pressure, reducing surface subsidence, and improving resource recovery rates. As the core transport carrier in backfilling mining, the mine backfilling pipeline system's laying efficiency, connection reliability, and ease of operation directly determine the overall progress and safety level of mining operations. Mine backfilling technology is a core component of green mine construction, playing a crucial role in solid waste treatment, ground pressure control, and preventing surface subsidence. This process requires a massive underground pipeline system to transport backfilling slurry prepared on the surface to the goaf. Due to the continuous advancement of the mining face, this pipeline system needs frequent disassembly, extension, and reassembly.

[0003] Currently, downhole filling pipelines mostly use traditional flange bolt connections or quick-thread connections. These methods have significant drawbacks: First, the connection efficiency is low. Flange connections require aligning the holes and tightening a large number of bolts one by one, while threaded connections require multiple turns. In the narrow and dimly lit underground environment, these operations are time-consuming and labor-intensive, which seriously restricts mining efficiency. Second, the sealing reliability is poor. The sealing effect of flange connections depends on the uniform pre-tightening of all bolts, making them highly susceptible to leakage of high-pressure slurry due to the loosening of individual bolts. The sealing strips of threaded connections are prone to wear under frequent disassembly and assembly, which can also lead to leakage. Slurry leakage not only causes material waste and environmental pollution, but its enormous pressure also poses a serious safety threat to personnel and equipment underground. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of low connection efficiency and poor sealing reliability in the existing technology, and to provide a mine filling pipeline system that can be quickly connected.

[0005] The technical solution adopted by the present invention to solve its technical problem is a mine filling pipeline system that can be quickly connected, including a pipe body, a slurry truck, a material pump and a connector assembly. The pipe body includes multiple filling pipes. The slurry truck is set at one end of the pipe body and pumps material into the pipe body through the material pump. The connector assembly is set between two adjacent filling pipes to achieve end-to-end connection to form a straight main pipeline. The connector assembly includes a receiving pipe, an external threaded sleeve, an internal threaded sleeve, and a retaining ring. One end of the receiving pipe has a flange and is fixedly connected to the flange end face of the filling pipe. The external threaded sleeve is sleeved on the outer circumferential surface of the receiving pipe, and the outer circumferential surface of the external threaded sleeve has threads. The inner circumferential surface of the internal threaded sleeve has threads. The internal threaded sleeve and the external threaded sleeve are threadedly mated, and the internal threaded sleeve is threadedly connected to the outer surface of the external threaded sleeve. When the external threaded sleeve is rotated, the internal threaded sleeve threadedly connected to the external threaded sleeve moves along the direction of the threads, so that the internal threaded sleeve moves away from or closer to the flange on the receiving pipe. Multiple connecting rods are hinged to the outer circumferential surface of the internal threaded sleeve. A tension rod is hinged to the other end of each connecting rod. A hollow hole is passed through the body of the tension rod. A fixing ring is fixed and sleeved on the outer circumferential surface of the receiving tube, and the fixing ring is located on one side of the external threaded sleeve. Multiple connecting seats are provided on the outer circumferential surface of the fixing ring, and the number of connecting seats corresponds one-to-one with the number of connecting rods. A through hole is passed through the connecting seat and it is hinged to the hollow hole of the tension rod body through a pin. When the external threaded sleeve is rotated and the internal threaded sleeve moves away from the fixing ring, the connecting rod moves away from the fixing ring along with the internal threaded sleeve. The connecting rod is hinged to the tension rod. After the tension rod is subjected to a backward pulling force, the tension rod rotates around the hinge point on the connecting seat, so that the end of the tension rod moves forward and towards the center to lock and press against the flange end face of the filling tube.

[0006] Furthermore, it also includes pipe connectors. The pipe body also includes a bent pipe and a filling sub-pipe. The bent pipe is arranged on the main pipeline composed of multiple filling pipes and is located between two mutually perpendicular filling pipes. The filling sub-pipe is connected in parallel between the upstream and downstream pipelines of the bent pipe. The pipe connectors are connected to both ends of the filling sub-pipe to realize the connection between the filling sub-pipe and the main pipeline.

[0007] Furthermore, it also includes multiple pneumatic butterfly valves, which are installed on the main pipeline consisting of multiple filling pipes.

[0008] Furthermore, a plurality of fixing rods are provided on the outer circumferential surface of one end of the external threaded sleeve. The fixing rods are arranged radially, and a handwheel is provided at the other end of the fixing rods. The handwheel is connected to the plurality of fixing rods.

[0009] Furthermore, a support ring and a heat insulation ring are provided on the outer circumferential surface of the bearing pipe, and the support ring and the heat insulation ring are located at both ends of the external threaded sleeve.

[0010] Furthermore, the end of the tensioning rod is provided with a clamping block for contacting and pressing the flange end face on the filling pipe.

[0011] Furthermore, it also includes a sealing gasket, which is disposed on the side of the fixing ring away from the external threaded sleeve. The connecting seat of the fixing ring is provided with a welding groove, and a guide rod is welded to the welding groove. The guide rod is located on the side of the connecting seat, and the body of the guide rod passes through a set hole. The sealing gasket is provided with an elongated hole aligned with the guide rod, and a set screw is disposed in the set hole. The guide rod passes through the elongated hole and fixes the set screw in the set hole, so that the sealing gasket abuts against the side end face of the fixing ring.

[0012] Furthermore, a C-shaped elastic retaining ring is fitted on the outer side of the pin that hinges the connecting rod to the tension rod and the pin that hinges the hollow hole on the tension rod to the connecting seat, to prevent it from falling out of the hinge hole under vibration.

[0013] Furthermore, the clamping block is made of a composite of wear-resistant rubber and metal.

[0014] Furthermore, the pneumatic butterfly valve includes a first valve and a second valve installed on the upstream main pipeline of the bend pipe, and a third valve and a fourth valve installed on the downstream main pipeline of the bend pipe. The first valve, the second valve, the third valve, and the fourth valve are all installed on the filling pipe. There is a pipeline connection between the first valve and the second valve, and there is a pipeline connection between the third valve and the fourth valve. By opening and closing the valves, the isolation of the bend pipe and the conduction of the filling secondary pipe can be achieved.

[0015] In summary, the present invention has the following beneficial technical effects: 1. This invention, through the design of the connector assembly, employs a structure of internal and external threaded sleeves combined with a tension rod and a clamping block, enabling rapid connection, disassembly, and locking of the pipe body. The operator only needs to rotate the handwheel to drive the threaded engagement of the external and internal threaded sleeves, thereby moving the tension rod and causing the clamping block to tightly press against or disengage from the opposite flange, completing the rapid connection and disassembly process without requiring drilling or tightening numerous bolts individually. Simultaneously, the application of a uniform axial force under the self-locking effect of the threads causes the sealing gasket to elastically deform and tightly adhere to the flange end face, eliminating the risk of slurry leakage due to loose connections, significantly simplifying the operation steps and improving work efficiency.

[0016] 2. This invention integrates a filling auxiliary pipe connected in parallel upstream and downstream of a blockage-prone bend pipe, and utilizes the coordinated control of four pneumatic butterfly valves to create a rapidly switchable dual-path system. During normal operation, the slurry flows through the bend pipe; if a pressure sensor detects blockage, the system automatically and quickly closes the valves at both ends for isolation, while the slurry flow is seamlessly switched to the filling auxiliary pipe for continued delivery. This eliminates the need for a complete shutdown of the filling operation due to localized blockages. Maintenance personnel can safely disassemble and clean the isolated bend pipe while the system continues to operate, significantly reducing troubleshooting time and ensuring the continuity and efficiency of mining production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a mine filling pipeline system that can be quickly connected according to the present invention; Figure 2 This is a schematic diagram of the filling pipe structure of an embodiment of a mine filling pipeline system that can be quickly connected according to the present invention; Figure 3 This is a schematic diagram of the connection structure between filling pipes in an embodiment of a mine filling pipeline system that can be quickly connected according to the present invention; Figure 4 This is an exploded structural diagram of the connector assembly of an embodiment of a mine filling pipeline system that can be quickly connected according to the present invention; Figure 5 This is a diagram showing the state of the connector assembly when the pipeline is not connected, according to an embodiment of a mine filling pipeline system that can be quickly connected according to the present invention. Figure 6 This is a diagram showing the state of the connector assembly when the pipeline is connected, according to an embodiment of a mine filling pipeline system that can be quickly connected according to the present invention. Figure 7 This is a partial view of a pipeline system according to an embodiment of a mine filling pipeline system that can be quickly connected according to the present invention; Figure 8 This is a schematic diagram of the structure at a bend in the pipeline system of an embodiment of a mine filling pipeline system that can be quickly connected according to the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Pipe body; 101. Filling pipe; 102. Bent pipe; 103. Filling auxiliary pipe; 2. Pulping cart; 3. Feed pump; 4. Joint assembly; 401. Receiver pipe; 402. External threaded sleeve; 403. Fixing rod; 404. Handwheel; 405. Support ring; 406. Heat insulation ring; 407. Internal threaded sleeve; 408. Connecting rod; 409. Hinge pin; 410. Tensioning rod; 411. C-type elastic 412. Retaining ring; 413. Connecting seat; 414. Welding groove; 415. Guide rod; 416. Set hole; 417. Sealing gasket; 418. Long hole; 419. Set screw; 420. Clamping block; 5. Pipe connector; 6. Pneumatic butterfly valve; 601. First valve; 602. Second valve; 603. Third valve; 604. Fourth valve; 7. Support seat; 8. Clamp. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] Reference Figure 1 , Figure 2 and Figure 3 This embodiment includes a pipe body 1, a pulping cart 2, a feed pump 3, a connector assembly 4, a pipe connector 5, and a pneumatic butterfly valve 6. The pulping cart 2 is located beside the input end of the pipe body 1. The outlet of the pulping cart 2 is connected to the feed pump 3. The outlet of the feed pump 3 is fixedly connected to the pipe body 1. The connector assembly 4 and the pipe connector 5 are located between the pipe bodies 1 to form a pipeline. The pneumatic butterfly valve 6 is installed on the pipe body 1 to control the opening and closing of the pipe body 1.

[0021] Pipe body 1 includes multiple filling pipes 101 for forming the main pipeline, a bent pipe 102 for changing the direction of the pipeline, and a filling branch pipe 103 for diversion. The filling pipes 101 are made of Q345B seamless steel pipe, and the inner wall is treated with sandblasting and epoxy resin coating to reduce slurry flow resistance and particle adhesion, thereby reducing the probability of pipe blockage. The filling pipes 101 have flanges at both ends that are compatible with the joint assembly 4. The bent pipes 102 are formed by integral forging, and the axes of the openings at both ends are perpendicular to each other. The flanges at both ends are aligned with the flanges of the filling pipes 101. The pipes are identical in specifications and can be directly connected via connector assembly 4 without the need for additional adapters, simplifying the installation process. The filling auxiliary pipe 103 is connected to the main pipeline branch ports at both ends via pipe connectors 5. Pipe connectors 5 are approximately "Y"-shaped, meaning they have three interfaces: one connects to the filling pipe 101, another to the bend pipe 102, and the last to the filling auxiliary pipe 103. There are two pipe connectors 5 within a single main pipeline, and the filling auxiliary pipe 103 connects to the same interfaces on both pipe connectors 5. Furthermore, the pipe connectors 5 have built-in check valves to prevent slurry backflow and ensure stable delivery during switching.

[0022] The connector assembly 4 is mainly used to connect pipelines. Specifically, it is set at one end of the filling pipe 101. The connector assembly 4 is used to realize the quick connection and locking between the filling pipe 101, the bent pipe 102 and the filling auxiliary pipe 103. Two adjacent filling pipes 101 are connected end to end through the connector assembly 4 to form a straight main pipeline. The bent pipe 102 is set at the bend of the main pipeline formed by multiple filling pipes 101. The filling auxiliary pipe 103 is connected in parallel between the upstream and downstream main pipelines of the bent pipe 102. Both ends of the filling auxiliary pipe 103 are connected to the branch port of the main pipeline through the pipe connector 5 to realize the connection with the main pipeline.

[0023] Reference Figure 4 , Figure 5 and Figure 6 The connector assembly 4 includes a receiving pipe 401, an external threaded sleeve 402, a support ring 405, a heat insulation ring 406, an internal threaded sleeve 407, a fixing ring 412, and a sealing gasket 417. One end of the receiving pipe 401 has a flange, and the rest is a pipe. The flange end face of the receiving pipe 401 is fixedly connected to the flange end face of the filling pipe 101 to be connected by the flange. The external threaded sleeve 402 is sleeved on the outer circumferential surface of the receiving pipe 401 and can rotate on the outer circumferential surface of the receiving pipe 401. The outer circumferential surface of the external threaded sleeve 402 has threads, and the inner end of the internal threaded sleeve 407 has threads. The internal threaded sleeve 407 is threadedly engaged with the external threaded sleeve 402, and the internal threaded sleeve 407 is threadedly connected to the outer surface of the external threaded sleeve 402. Furthermore, both the external thread of the external threaded sleeve 402 and the internal thread of the internal threaded sleeve 407 adopt trapezoidal threads. This thread profile has the characteristics of "large bearing area, moderate transmission efficiency, and excellent self-locking performance". Compared with ordinary triangular threads, when subjected to axial pressure, the positive pressure component between the thread surfaces of the trapezoidal thread is more likely to form a frictional force that hinders relative rotation. Multiple fixing rods 403 are provided on one end of the outer circumference of the external threaded sleeve 402 near the flange end face of the receiving pipe 401. The multiple fixing rods 403 are arranged radially along the external threaded sleeve 402 and extend outward. At the same time, the outwardly extending ends of the fixing rods 403 are connected to a handwheel 404. By rotating the handwheel 404, the external threaded sleeve 402 is rotated. Under the engagement of the threads, the internal threaded sleeve 407 moves away from or towards the handwheel 404 along the direction of the threads, thereby realizing the movement of the internal threaded sleeve 407.

[0024] Both the support ring 405 and the heat insulation ring 406 are identical in twos. The support ring 405 is disposed on the outer circumferential surface of the receiving pipe 401 and is located at both ends of the external threaded sleeve 402. The heat insulation ring 406 is sandwiched between the support ring 405 on both sides and the external threaded sleeve 402. The support ring 405 provides stable radial support for the external threaded sleeve 402, ensuring that it will not wobble during rotation, and at the same time bears part of the reaction force generated by the locking force, ensuring smooth transmission. The heat insulation ring 406 blocks or reduces the transmission of the temperature of the filling grout to the joint transmission components, preventing the transmission components from jamming due to thermal expansion or abnormally increasing the operating torque.

[0025] Four hinge seats are evenly distributed on the outer circumferential surface of the internal threaded sleeve 407. A connecting rod 408 is hinged to each hinge seat, and a tension rod 410 is hinged to the other end of the connecting rod 408. A clamping block 420 is provided at the end of the tension rod 410, and the front part of the tension rod 410 has a hollow hole. A fixing ring 412 is opened at the axis and fitted onto the outer circumferential surface of the receiving tube 401 for fixation. At the same time, the fixing ring 412 is located on the right side of the external threaded sleeve 402. Four connecting seats 413 are evenly distributed on the outer circumferential surface of the fixing ring 412. The connecting seats 413 and the internal threaded sleeve 407 are connected to each other. The hinge seats of 07 are aligned. The connecting seat 413 consists of two plates and a base block. The two plates are parallel to each other and spaced a certain distance apart, while being perpendicular to the base block. Both plates have through holes. The body of the tension rod 410 is placed between the two plates, and the hollow hole on the tension rod 410 is aligned with the through hole. The tension rod 410 is hinged to the connecting seat 413 by passing through the hollow hole and the through hole with a pin. The hollow hole is there to achieve the hinge with the connecting seat 413 on the fixed ring 412. The connecting rod 408 and the tension rod 410 form an effective lever structure. When the internal threaded sleeve 407 moves toward the flange end face of the receiving pipe 401, the hinge point between the tension rod 410 and the connecting seat 413 cannot move but can only rotate. When the connecting rod 408 moves away, the connecting rod 408 rotates around the hinge point with the fixed ring 412, and the connecting rod 408 gradually opens outward. The hinge point between the connecting rod 408 and the tension rod 410 also rotates synchronously. The opening of the connecting rod 408 causes the end of the tension rod 410 that is hinged with the connecting rod 408 to also open outward. Then the tension rod 410 rotates around the hinge point with the connecting seat 413, causing the other end of the tension rod 410 to tighten inward.

[0026] In this embodiment, the hinge pins that connect the connecting rod 408 and the tension rod 410, as well as the hinge pins that connect the hollow hole on the tension rod 410 to the connecting seat 413, are all hinge pins 409 specifically designed for hinges. Furthermore, a clamping block 420 is provided at the end of the tension rod 410 to contact and press against the flange end face of the filling pipe 101. The clamping block 420 is made of a wear-resistant rubber and metal composite, with the side closest to the pipe to be connected being a mating surface adapted to the flange end of the pipe to be connected.

[0027] A C-shaped elastic retaining ring 411 is fitted on the outer side of the hinge pin 409. The C-shaped elastic retaining ring 411 is correspondingly engaged in the hinge holes of the connecting rod 408 and the tension rod 410, as well as the hinge holes of the connecting seat 413 and the tension rod 410, to prevent the hinge pin 409 from falling out of the hinge hole under downhole vibration conditions. The hinge pin 409 has a shoulder-type retaining ring, with the shoulder diameter being 1-2 mm larger than the hinge hole, which can limit axial displacement. The C-shaped elastic retaining ring 411 is made of 65Mn spring steel, with a hardness of HRC45-50 after heat treatment. The opening size is 5%-8% smaller than the diameter of the hinge pin 409. After being engaged in the hinge hole, it can generate radial tension, tightly fitting the hole wall and preventing the hinge pin 409 from falling out due to downhole vibration.

[0028] Each of the four connecting seats 413 of the retaining ring 412 is provided with a welding groove 414. The welding groove 414 is located on the surface of the bottom block and next to the two plates. A guide rod 415 is welded to each of the four welding grooves 414. The guide rod 415 is offset from the connecting seat 413. The rod body of the guide rod 415 is provided with a locking hole 416. The sealing gasket 417 is located on the side of the retaining ring 412 away from the external threaded sleeve 402. The shape of the sealing gasket 417 is similar to that of the retaining ring 412, with four evenly distributed... The gasket 417 has a raised section and four evenly distributed elongated holes 418. These holes 418 are located on the raised section and correspond to the positions of the guide rod 415. A set screw 419 is correspondingly provided in the set hole 416 on the guide rod 415. After the gasket 417 is tightly fitted against the retaining ring 412, the guide rod 415 passes through the elongated holes 418, and the set screw 419 is fixed within the set hole 416, thus achieving tight contact between the gasket 417 and the side end face of the retaining ring 412. Furthermore, a sealing groove is provided on the flange end face of the receiving pipe 401 to precisely position the gasket 417 and prevent leakage caused by displacement of the seal.

[0029] The guide rod 415 is made of stainless steel with a chrome-plated surface. After welding with the retaining ring 412, the perpendicularity error is ≤0.5mm, providing precise guidance for the sealing gasket 417. The sealing gasket 417 adopts a composite structure of nitrile rubber and metal skeleton. The metal skeleton enhances the rigidity of the gasket, and the rubber part has a Shore hardness of 60-70A and a compression of 15%-20%. It can achieve reliable sealing under pressure of 1.5-3.0MPa and is resistant to slurry corrosion.

[0030] When using the connector assembly 4, first connect the connector assembly 4 to the required pipe in the pipe body 1. When two pipes need to be connected, such as two filling pipes 101, one of the filling pipes 101 will be fixedly connected to the flange of the receiving pipe 401 on the connector assembly 4. Then, align the filling pipe 101 with the connector assembly 4 at one end with the flange of the filling pipe 101 to be connected at the other end. At this time, the connector assembly 4 is in the position as follows: Figure 5 In the "unconnected" state shown, the tension rod 410 and its end clamping block 420 are in the open position. The operator rotates the handwheel 404, which drives the external threaded sleeve 402 to rotate through the fixed rod 403. Since the external threaded sleeve 402 and the internal threaded sleeve 407 are threadedly engaged, the rotating external threaded sleeve 402 will drive the internal threaded sleeve 407 to move backward along the axis of the receiving pipe 401. The backward movement of the internal threaded sleeve 407 will also cause the connecting rod 408 and the clamping rod connected in sequence to move.

[0031] Since the two ends of the connecting rod 408 are hinged to the internal threaded sleeve 407 and the tension rod 410 respectively, and the body of the tension rod 410 is hinged to the connecting seat 413 on the fixing ring 412, and the fixing ring 412 cannot move, and the connecting rod 408 itself has a certain length, when the internal threaded sleeve 407 moves backward, the connecting rod 408, which is set along the axial direction of the joint assembly 4 in the "unconnected" state, gradually rotates around the hinge point of the internal threaded sleeve 407. The connecting rod 408 becomes set along the radial direction of the joint assembly 4. At this time, the hinge point of the connecting rod 408 and the tension rod 410 moves radially away from the axis of the internal threaded sleeve 407. That is, one end of the tension rod 410 starts to tilt and rise around the hinge point of the tension rod 410 and the connecting seat 413, and the other end of the corresponding tension rod 410 will lower and retract.

[0032] In simple terms, the backward movement of the internal threaded sleeve 407, via the connecting rod 408 hinged to it, pulls the tension rod 410 connected to it. The middle part of the tension rod 410 is hinged to the connecting seat 413 fixed on the fixing ring 412 via the hinge pin 409. Therefore, when the tension rod 410 is subjected to a backward pulling force, it will rotate with its hinge point with the connecting seat 413 as the fulcrum, causing the clamping block 420 at its end to swing forward and finally press tightly against the flange end face of the opposite filling pipe 101. At this time, the joint assembly 4 is in the position of... Figure 6 In the "connected" state shown, the strong clamping force of the clamping block 420 passes through the flange of the pipe to be connected and finally acts on the sealing gasket 417 on the side end face of the fixing ring 412. Under the pressure of the flange, the sealing gasket 417 undergoes elastic deformation, filling the tiny gaps on the flange end face and forming a reliable end face seal.

[0033] Simultaneously, the clamping force is transmitted to the internal threaded sleeve 407 through the tension rod 410 and the connecting rod 408, causing the internal threaded sleeve 407 to tend to move "away from the flange to be connected" along the axial direction of the external threaded sleeve 402. At this time, a frictional torque is generated between the threads that hinders the rotation of the internal threaded sleeve 407. This frictional torque is greater than the "rotational driving torque" generated by the axial force of the internal threaded sleeve 407, causing the internal threaded sleeve 407 to be unable to rotate in the opposite direction on its own, thereby locking its axial position and preventing the release of the clamping force, ensuring that the connection will not loosen in the downhole vibration environment. When disassembling, simply rotate the handwheel 404 counterclockwise, and the entire locking mechanism moves in the reverse order mentioned above. The internal threaded sleeve 407 moves forward, pushing the connecting rod 408 and causing the tension rod 410 to open. The clamping block 420 disengages from the opposite flange, and the two sections of the pipe body 1 can be easily separated.

[0034] Reference Figure 7 and Figure 8 The pneumatic butterfly valve 6 includes a first valve 601 and a second valve 602 disposed on the upstream main pipeline of the bend pipe 102, and a third valve 603 and a fourth valve 604 disposed on the downstream main pipeline of the bend pipe 102. The first valve 601, the second valve 602, the third valve 603, and the fourth valve 604 are all disposed on the filling pipe 101. There is a pipeline connection between the first valve 601 and the second valve 602, and there is a pipeline connection between the third valve 603 and the fourth valve 604. By opening and closing the above valves, the bend pipe 102 can be isolated and the filling auxiliary pipe 103 can be connected. In use, pressure sensors can be installed on the upstream side of the main pipeline near the second valve 602 and the downstream side of the third valve 603 to monitor the slurry pressure in the pipeline in real time.

[0035] Specifically, when the mine filling operation is in normal operation, the system takes the main pipeline where the bend pipe 102 is located as the core conveying channel, and the components work together to achieve stable transmission of filling slurry. All four valves of the pneumatic butterfly valve 6 are in the fully open state. At this time, since the one-way valve built into the filling auxiliary pipe 103 is closed, the filling slurry is pumped out from the slurry preparation car 2 through the conveying pump 3, and the flow path is upstream filling pipe 101 → first valve 601 → second valve 602 → bend pipe 102 → third valve 603 → fourth valve 604 → downstream filling pipe 101. When the bend pipe 102 becomes blocked due to slurry agglomeration, large particle impurity deposition, or localized narrowing caused by wear on the inner wall of the pipe, the slurry cannot pass smoothly through the bend pipe 102. The pressure upstream of the second valve 602 will rise sharply, while the pressure downstream of the third valve 603 will drop rapidly. When the pressure difference exceeds the threshold, the system determines that the bend pipe 102 is blocked. Then, the solenoid valve assembly of the pneumatic butterfly valve 6 prioritizes the closure of the second valve 602 and the third valve 603. The second valve 602 closes. It can prevent the upstream high-pressure slurry from continuously flowing into the blocked bend pipe 102, avoiding pipeline overpressure rupture; the closing of the third valve 603 prevents the slurry blocked in the bend pipe 102 from flowing back to the downstream main pipeline and contaminating the normal delivery channel. As the second valve 602 and the third valve 603 are closed, the one-way valve of the filling sub-pipe 103 is opened. At this time, the flow path of the filling slurry is switched to upstream filling pipe 101 → first valve 601 → filling sub-pipe 103 → fourth valve 604 → downstream filling pipe 101. While the filling sub-pipe 103 maintains normal flow, maintenance personnel can safely disassemble the connector assemblies 4 at both ends of the isolated bend pipe 102 for cleaning. After the blockage problem in the bend pipe 102 is resolved, the operator reopens the relevant valves of the pneumatic butterfly valve 6 to restore the normal flow function of the bend pipe 102 in the pipeline system and closes the relevant valves on the filling sub-pipe 103, so that the pipeline system returns to normal operation.

[0036] Reference Figure 1 and Figure 7 In one embodiment of the present invention, it further includes a support base 7 and a clamp 8. The support base 7 is spaced apart on the underground ground below the pipe body 1, and the clamp 8 is correspondingly disposed on the top of the support base 7. The pipe body 1 is fixed to each support base 7 by the clamp 8.

[0037] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component. Therefore, all equivalent changes made to the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A mine filling pipeline system that can be quickly connected, characterized in that, The system includes a pipe body (1), a pulping cart (2), a feed pump (3), and a connector assembly (4). The pipe body (1) includes multiple filling pipes (101). The pulping cart (2) is located at one end of the pipe body (1) and pumps material into the pipe body (1) through the feed pump (3). The connector assembly (4) is located between two adjacent filling pipes (101) to form a straight main pipeline. The connector assembly (4) includes a receiving pipe (401), an external threaded sleeve (402), an internal threaded sleeve (407), and a retaining ring (412). One end of the receiving pipe (401) has a flange and is fixedly connected to the flange end face flange of the filling pipe (101). The external threaded sleeve (402) is sleeved on the outer circumferential surface of the receiving pipe (401), and the outer circumferential surface of the external threaded sleeve (402) has threads. The inner circumferential surface of the internal threaded sleeve (407) has threads. The internal threaded sleeve (407) is threadedly engaged with the external threaded sleeve (402), and the internal threaded sleeve (407) is threadedly connected to the outer surface of the external threaded sleeve (402). When the external threaded sleeve (402) rotates, the internal threaded sleeve (407) threadedly connected to the external threaded sleeve (402) moves along the direction of the threads, so that the internal threaded sleeve (407) moves away from or closer to the flange on the receiving pipe (401). Multiple connecting rods (408) are hinged to the outer circumferential surface of the internal threaded sleeve (407). A tension rod (410) is hinged to the other end of each connecting rod (408). A hollow hole is passed through the body of the tension rod (410). A fixing ring (412) is fixed and sleeved on the outer circumferential surface of the receiving tube (401), and the fixing ring (412) is located on one side of the external threaded sleeve (402). Multiple connecting seats (413) are provided on the outer circumferential surface of the fixing ring (412), and the number of connecting seats (413) corresponds one-to-one with the number of connecting rods (408). Each connecting seat (413) has a through hole. The connecting rod (408) is hinged to the hollow hole of the tension rod (410) by a pin; when the external threaded sleeve (402) is rotated and the internal threaded sleeve (407) moves away from the fixed ring (412), the connecting rod (408) moves away from the fixed ring (412) along with the internal threaded sleeve (407). The connecting rod (408) is hinged to the tension rod (410). After the tension rod (410) is subjected to a backward pulling force, the tension rod (410) rotates around the hinge point on the connecting seat (413), so that the end of the tension rod (410) moves forward and towards the center to catch and press against the flange end face of the filling tube (101).

2. The mine filling pipeline system with rapid connection according to claim 1, characterized in that, It also includes a pipe connector (5). The pipe body (1) also includes a bent pipe (102) and a filling sub-pipe (103). The bent pipe (102) is arranged on the main pipeline composed of multiple filling pipes (101) and is located between two mutually perpendicular filling pipes (101). The filling sub-pipe (103) is connected in parallel between the upstream and downstream pipelines of the bent pipe (102). The pipe connector (5) is connected to both ends of the filling sub-pipe (103) to realize the connection between the filling sub-pipe (103) and the main pipeline.

3. A mine filling pipeline system capable of rapid connection according to claim 1, characterized in that, It also includes multiple pneumatic butterfly valves (6), which are installed on the main pipeline consisting of multiple filling pipes (101).

4. A mine filling pipeline system capable of rapid connection according to claim 1, characterized in that, Multiple fixing rods (403) are provided on the outer circumferential surface of one end of the external threaded sleeve (402). The fixing rods (403) are arranged radially, and a handwheel (404) is provided on the other end of the fixing rods (403). The handwheel (404) is connected to the multiple fixing rods (403).

5. A mine filling pipeline system capable of rapid connection according to claim 1, characterized in that, A support ring (405) and a heat insulation ring (406) are provided on the outer circumferential surface of the receiving pipe (401), and the support ring (405) and the heat insulation ring (406) are located at both ends of the external threaded sleeve (402).

6. A mine filling pipeline system capable of rapid connection according to claim 1, characterized in that, The end of the tensioning rod (410) is provided with a clamping block (420) for contacting and pressing the flange end face of the filling tube (101).

7. A mine filling pipeline system capable of rapid connection according to claim 1, characterized in that, It also includes a sealing gasket (417), which is disposed on the side of the fixing ring (412) away from the external threaded sleeve (402). The connecting seat (413) of the fixing ring (412) is provided with a welding groove (414), and a guide rod (415) is welded on the welding groove (414). The guide rod (415) is located on the side of the connecting seat (413). The rod body of the guide rod (415) passes through a set hole (416). The sealing gasket (417) is provided with an elongated hole (418) aligned with the guide rod (415). A set screw (419) is disposed in the set hole (416). The guide rod (415) passes through the elongated hole (418) and fixes the set screw (419) in the set hole (416), so that the sealing gasket (417) abuts against the side end face of the fixing ring (412).

8. A mine filling pipeline system capable of rapid connection according to claim 1, characterized in that, A C-shaped elastic retaining ring (411) is fitted on the outside of the pin that hinges the connecting rod (408) to the tension rod (410) and the pin that hinges the hollow hole on the tension rod (410) to the connecting seat (413) to prevent it from falling out of the hinge hole under vibration.

9. A mine filling pipeline system capable of rapid connection according to claim 6, characterized in that, The clamping block (420) is made of a composite of wear-resistant rubber and metal.

10. A mine filling pipeline system capable of rapid connection according to claim 2, characterized in that, The pneumatic butterfly valve (6) includes a first valve (601) and a second valve (602) installed on the upstream main pipeline of the bent pipe (102), and a third valve (603) and a fourth valve (604) installed on the downstream main pipeline of the bent pipe (102). The first valve (601), the second valve (602), the third valve (603), and the fourth valve (604) are all installed on the filling pipe (101). There is a pipeline connection between the first valve (601) and the second valve (602), and there is a pipeline connection between the third valve (603) and the fourth valve (604). By opening and closing the valves, the isolation of the bent pipe (102) and the conduction of the filling sub-pipe (103) can be realized.

Images