A pipe plug unblocking device and method for use in the transportation of mineral slurries

Abstract

The present application relates to pipeline dredging technical field, provide a kind of pipeline blockage dredging device and method for transporting ore pulp, including clean water pipe, elbow joint and with its connected ore pulp conveying pipe, the clean water pipe with the elbow joint between being equipped with communication pipe and parallelly communicated;Dredging mechanism, including clean scraping head, axial flow impeller and for connecting the transmission connecting piece of clean scraping head and axial flow impeller, the axial flow impeller is installed in the clean water pipe, the transmission connecting piece along the clean water pipe and the communication pipe is inserted into the elbow joint;The water flow flowing in the clean water pipe drives the synchronous rotation of axial flow impeller, transmission connecting piece and clean scraping head.The present application is washed by water flow simultaneously, and clean scraping head is driven to clean and scrape inner wall scale by dredging mechanism, construction is convenient, and blockage dredging effect is good.

Description

Technical Field

[0001] This invention relates to the field of pipeline dredging technology, and more specifically, to a device and method for unblocking pipelines used for transporting mineral slurry. Background Technology

[0002] Mineral slurry is a liquid mixture formed in industrial production by adding water and other auxiliary agents to solid raw materials such as ores and clays to extract target elements. Pipeline transportation of mineral slurry involves crushing solids into powder, mixing them with an appropriate amount of liquid to form a slurry, and then transporting it over long distances through pipelines. During the pipeline transportation of tailings, slurry sedimentation often causes pipeline blockages. In particular, scale formation at bends, where reduced flow velocity, easily leads to blockages that are difficult to clear.

[0003] Current solutions for pipe blockages typically involve locating the blockage and then disassembling or cutting the pipe to clear it. This method is labor-intensive, has significant limitations, and carries high safety risks. Furthermore, cutting the pipe not only causes irreversible damage but also increases the difficulty and delays the process. Additionally, conventional pipe cleaners are more difficult to use for cleaning bends in pipes compared to straight sections. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for unblocking pipes used for transporting mineral slurry, which can facilitate unblocking without damaging the pipes.

[0005] This invention is achieved through the following technical solution: a pipe blockage clearing device for conveying mineral slurry, comprising a clean water pipe, a bend joint, and a mineral slurry conveying pipe connected thereto, wherein a connecting pipe is provided between the clean water pipe and the bend joint for parallel communication; a clearing mechanism, comprising a scraper head, an axial flow impeller, and a transmission connector for connecting the scraper head and the axial flow impeller, wherein the axial flow impeller is installed inside the clean water pipe, and the transmission connector extends along the clean water pipe and the connecting pipe into the bend joint; the water flowing inside the clean water pipe drives the axial flow impeller, the transmission connector, and the scraper head to rotate synchronously.

[0006] Furthermore, the cleaning head includes a connector, a chain, and a scraper ring. The chain has several segments evenly spaced around the surface of the connector, and the scraper ring is installed at one end of the chain.

[0007] Furthermore, the upper and lower ends of the axial flow impeller are respectively rotatably connected to a first bracket and a second bracket; the inner wall of the clear water pipe is provided with a slide opening arranged along its axial direction, and the slide opening is located above the connecting pipe. The outer edges of the first bracket and the second bracket are adapted to fit into the slide opening, and the axial flow impeller is driven to float by the water flow.

[0008] Furthermore, the water pipe is arranged vertically, and a flow rate regulating valve is installed on the water pipe.

[0009] Furthermore, the top of the first bracket is provided with magnetic metal, and the outside of the water pipe is provided with an electromagnetic adsorber, the position of which corresponds to the top of the slide opening.

[0010] Furthermore, a number of ball bearings are embedded in the inner wall of the bend joint, and a pressure sensor is installed on the inner wall of the bend joint.

[0011] Furthermore, a one-way valve plate is provided inside the connecting pipe, and the upper end of the one-way valve plate is hinged to the top end of the connecting pipe. Water flows through the clean water pipe to flush open the one-way valve plate.

[0012] Furthermore, the diameter of the slurry conveying pipe is larger than the diameter of the bend joint.

[0013] Furthermore, the transmission connection component uses a spring.

[0014] A method for unblocking a pipeline used for conveying slurry, as described above, comprises the following steps:

[0015] S1: Detects whether there is a blockage in the pipeline. The pressure sensor monitors the pressure value at the bend joint and sends it back to the background. If there is a blockage, it indicates that the flow rate at the bend joint has decreased and the pressure has increased, and the pressure value exceeds the limit.

[0016] S2: Controls the slurry delivery pipe to shut off, stopping the slurry from passing through the bend joint;

[0017] S3: Lower the unblocking mechanism, disconnect the power to the electromagnetic adsorber, and under the action of gravity, the axial flow impeller moves down to the lower end of the slide opening, while the cleaning scraper head abuts against the valve plate;

[0018] S4: Open the clean water pipe to input water with a certain flow rate and pressure. Part of the water flow enters the connecting pipe and opens the one-way valve plate, allowing the transmission connector and the cleaning head to enter the bend joint. The water flow also drives the axial flow impeller to rotate.

[0019] S5: The flow rate of water in the clean water pipe is stabilized by the flow rate regulating valve. The chain and scraper ring swing and strike the scale layer on the pipe wall, and the clean water flow input from the connecting pipe is used to flush and remove it.

[0020] S6: Adjust the flow rate by regulating the flow rate valve, and repeatedly increase and decrease the flow rate to make the axial flow impeller move up and down along the slide opening, driving the cleaning head to move back and forth in the bend joint for a period of time to clear the blockage.

[0021] S7: Reset, the electromagnetic adsorber is energized and has magnetic attraction. When the flow rate regulating valve increases the water flow speed again and pushes the axial flow impeller to the top of the slide opening, the electromagnetic adsorber attracts the axial flow impeller. The axial flow impeller pulls the transmission connecting parts and the cleaning head back into the communicating vessel.

[0022] S8: Open the slurry delivery pipe and verify the pressure value data of the pressure sensor for retesting.

[0023] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0024] 1. It monitors pressure values ​​through pressure sensors and autonomously clears blockages without human intervention;

[0025] 2. The flow of clean water drives the axial impeller to provide power for the cleaning head, and at the same time it can also flush the bent pipe joints, and promptly flush down the cleaned impurities. The chain can adapt to different sizes of pipes during the swinging process, and can fully contact the scale layer on all parts of the pipe wall, resulting in good unblocking and cleaning effect.

[0026] 3. By adjusting the water flow rate in the clean water pipe, the cleaning action position in the bend joint is changed. When the flow rate is high enough, the unblocking mechanism can automatically retract into the connecting pipe and the clean water pipe, without adversely affecting the normal material transportation of the slurry conveying pipe and the bend joint. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of a pipe blockage clearing device for conveying mineral slurry provided in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the unblocking mechanism in the present invention;

[0030] Figure 3 This is a schematic diagram of the cross-section of the axial flow impeller in the clean water pipe of the present invention;

[0031] Figure 4 This is a schematic diagram of the cleaning head in this invention;

[0032] Figure 5 This is a schematic diagram of the unblocking mechanism in this invention when it is inserted into the connecting pipe and the clean water pipe.

[0033] Icons: 1-Clean water pipe, 11-Slide opening, 2-Bend joint, 3-Slurry conveying pipe, 4-Dredging mechanism, 41-Scraper head, 411-Connector, 412-Chain, 413-Scraper ring, 42-Transmission connector, 43-Axial flow impeller, 431-First support, 4311-Magnetic metal, 432-Second support, 5-Flow rate regulating valve, 6-Electromagnetic adsorber, 7-Connecting pipe, 8-One-way valve plate, 9-Pressure sensor, 10-Ball. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] The following description, in conjunction with specific embodiments, provides further details. Figures 1-5As shown, this embodiment is a pipe blockage clearing device for conveying slurry, including a clean water pipe 1, a bend joint 2, and a slurry conveying pipe 3 connected thereto. A connecting pipe 7 is provided between the clean water pipe 1 and the bend joint 2 for parallel communication. The clearing mechanism 4 includes a scraper head 41, an axial flow impeller 43, and a transmission connector 42 for connecting the scraper head 41 and the axial flow impeller 43. The axial flow impeller 43 is installed inside the clean water pipe 1, and the transmission connector 42 extends into the bend joint 2 along the clean water pipe 1 and the connecting pipe 7. The water flowing in the clean water pipe 1 drives the axial flow impeller 43, the transmission connector 42, and the scraper head 41 to rotate synchronously. Specifically, there is a turning point at the bend joint 2. When the conveyed material passes through this point, its flow rate decreases and its pressure increases, which makes the pipe wall prone to scaling. Therefore, when there is obvious blockage at the bend joint 2, the continuous flow of water from the clean water pipe 1 will drive the axial flow impeller 43 to rotate. In turn, the transmission connector 42 will transmit this rotation to the front cleaning head 41 to rotate, forming a swing similar to the end of a rope. Thus, the cleaning head 41 hits the scaled surface on the inner wall of the bend joint 2 while rotating. Combined with the high-pressure clean water entering the bend joint 2 from the connecting pipe 7, the blockage at the bend joint 2 is cleared.

[0038] Reference Figure 2 and Figure 4 As shown, the cleaning head 41 here includes a connector 411, a chain 412, and a scraper ring 413. The chain 412 has several strips evenly spaced around the surface of the connector 411, and the scraper ring 413 is installed at one end of the chain 412. Specifically, after scale buildup on the bend joint 2, the apertures at different locations are inconsistent, and the water flow rates are different. The chain 412 can adapt to a wide range when it rotates. The extended length of the chain 412 is slightly larger than the radius of the bend joint 2. The scale layer is gradually removed by the slapping and crushing action of the scraper ring 413 and the chain 412, and is further flushed with high-pressure water. The mixture is discharged along the other end of the bend joint 2.

[0039] like Figure 2As shown, a first bracket 431 and a second bracket 432 are rotatably connected to the upper and lower ends of the axial flow impeller 43, respectively. The inner wall of the water pipe 1 is provided with a slide opening 11 arranged along its axial direction, and the slide opening 11 is located above the connecting pipe 7. The outer edges of the first bracket 431 and the second bracket 432 are adapted to fit and slide into the slide opening 11, and the axial flow impeller 43 floats due to the water flow. The water pipe 1 is arranged vertically, so the water flow impact force is different. The buoyancy of the axial flow impeller 43 changes according to gravity, and a flow rate regulating valve 5 is installed on the water pipe 1. Specifically, by setting the first bracket 431 and the second bracket 432 to slide in cooperation with the slide opening 11, the axial flow impeller 43 can move linearly while rotating. Therefore, under the change of water flow rate in the water pipe 1, the axial flow impeller 43 floats repeatedly along the slide opening 11. The axial flow impeller 43 will pull the transmission connector 42, thereby clearing the blockage of the bend joint 2 with a wider coverage area and a cleaner cleaning.

[0040] like Figure 1 and Figure 5 As shown, the top of the first support 431 is provided with a magnetic metal 4311, and the outside of the clean water pipe 1 is provided with an electromagnetic adsorber 6. The position of the electromagnetic adsorber 6 corresponds to the top of the slide opening 11. Specifically, when the bent pipe joint 2 is cleaned, the axial flow impeller 43 moves to the top, so that the electromagnetic adsorber 6 is energized and attracts it. The axial flow impeller 43 drives the transmission connecting piece 42 to pull the cleaning head 41 into the connecting pipe 7, so as to avoid the cleaning head 41 being in the slurry conveying pipe 3 and causing adverse effects on its normal conveying.

[0041] Reference Figure 1 As shown, several balls 10 are embedded in the inner wall of the elbow joint 2, and a pressure sensor 9 is installed on the inner wall of the elbow joint 2. Specifically, when the balls 10 come into contact with the slurry, they rotate, which improves the smoothness inside the elbow joint 2. As a result, when the slurry passes through the elbow joint 2, its flow rate is relatively faster, the pressure is relatively lower, it is not easy to clog, and the scaling speed is slower.

[0042] like Figure 5 As shown, a one-way valve plate 8 is provided inside the connecting pipe 7. The upper end of the one-way valve plate 8 is hinged to the top of the connecting pipe 7. Water flows through the clean water pipe 1 to flush open the one-way valve plate 8. Specifically, when the slurry conveying pipe 3 is working normally, the one-way valve plate 8 is used to prevent slurry from entering the connecting pipe 7. Only when water flows through the clean water pipe 1 can some water flush open the one-way valve plate 8, driving the cleaning scraper head 41 into the bend joint 2.

[0043] In addition, the diameter of the slurry conveying pipe 3 is larger than the diameter of the bend joint 2. Specifically, the smaller diameter of the conveying pipe can increase the flow velocity at the bend joint 2 to a certain extent, making it less prone to clogging.

[0044] It should be noted that the transmission connector 42 uses a spring or other flexible component, so that the axial impeller 43 can rotate and deform under bending conditions when it rotates. The tail end cleaning head 41 can achieve the effect of swinging and hitting to unclog the scale layer. In addition, the transmission connector 42 formed by multiple small universal joints connected in series or bicycle chain 412 can also be used.

[0045] A method for unblocking a pipeline used for conveying slurry, as described above, comprises the following steps:

[0046] S1: Detect whether there is a blockage in the pipeline. The pressure value at the elbow joint 2 is monitored by the pressure sensor 9 and fed back to the background. If there is a blockage, it indicates that the flow rate at the elbow joint 2 has decreased and the pressure has increased, and the pressure value exceeds the limit.

[0047] S2: Control the slurry delivery pipe 3 to be shut down, and the slurry stops passing through the bend joint 2;

[0048] S3: Lower the unblocking mechanism 4, de-energize the electromagnetic adsorber 6, and under the action of gravity, the axial flow impeller 43 moves down to the lower end of the slide opening 11, while the cleaning scraper head 41 abuts against the valve plate.

[0049] S4: Open the clean water pipe 1 to input water with a certain flow rate and pressure. Part of the water flow enters the connecting pipe 7 and pushes open the one-way valve plate 8, so that the transmission connector 42 and the cleaning scraper head 41 enter the bend joint 2. The water flow also drives the axial flow impeller 43 to rotate.

[0050] S5: The flow rate of water in the clean water pipe 1 is stabilized by the flow rate regulating valve 5. The chain 412 and scraper ring 413 rotate and strike the scale layer on the pipe wall, and the clean water flow input by the connecting pipe 7 is used to flush and remove it.

[0051] S6: Adjust the flow rate by adjusting the flow rate valve 5, and repeatedly increase and decrease the flow rate to make the axial flow impeller 43 move up and down repeatedly along the slide opening 11, driving the cleaning head 41 to move back and forth in the bend joint 2 for a period of time to clear the blockage.

[0052] S7: Reset, the electromagnetic adsorber 6 is energized and has magnetic attraction. When the flow rate regulating valve 5 increases the water flow speed again and pushes the axial flow impeller 43 to the top of the slide chute 11, the electromagnetic adsorber 6 attracts the axial flow impeller 43. The axial flow impeller 43 pulls the transmission connector 42 and the cleaning head 41 back into the communicating vessel.

[0053] S8: Open the slurry delivery pipe 3 and verify the pressure value data of the pressure sensor 9 for re-inspection, so as to achieve long-term use.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for unblocking pipes used for conveying mineral slurry, characterized in that: It includes a clean water pipe (1), a bend joint (2) and a slurry conveying pipe (3) connected to the bend joint (2). A connecting pipe (7) is provided between the clean water pipe (1) and the bend joint (2). The clean water pipe (1) and the bend joint (2) are connected through the connecting pipe (7). The unblocking mechanism (4) includes a scraper head (41), an axial flow impeller (43), and a transmission connector (42) for connecting the scraper head (41) and the axial flow impeller (43). The axial flow impeller (43) is installed inside the clean water pipe (1), and the transmission connector (42) extends into the elbow joint (2) along the clean water pipe (1) and the connecting pipe (7). The water flowing in the clean water pipe (1) drives the axial flow impeller (43), the transmission connector (42) and the cleaning head (41) to rotate synchronously; The transmission connector (42) is made of spring; The connecting pipe (7) is provided with a one-way valve plate (8). The upper end of the one-way valve plate (8) is hinged to the top of the connecting pipe (7). Water flows through the water pipe (1) to open the one-way valve plate (8). The upper and lower ends of the axial flow impeller (43) are respectively rotatably connected to a first bracket (431) and a second bracket (432); The inner wall of the water pipe (1) is provided with a slide opening (11) arranged along its axial direction, and the slide opening (11) is located above the connecting pipe (7). The outer edges of the first bracket (431) and the second bracket (432) are adapted to and inserted into the slide opening (11), and the axial flow impeller (43) is driven to float by the water flow. The water pipe (1) is set vertically, and a flow rate regulating valve (5) is installed on the water pipe (1); The top of the first support (431) is provided with a magnetic metal (4311), and the outside of the clear water pipe (1) is provided with an electromagnetic adsorber (6). The position of the electromagnetic adsorber (6) corresponds to the top of the slide opening (11). When the electromagnetic adsorber (6) is energized, it has a magnetic attraction force. When the flow rate regulating valve (5) is adjusted to increase the water flow speed and push the axial flow impeller (43) to the top of the slide opening (11), the electromagnetic adsorber (6) adsorbs the first support (431), and the axial flow impeller (43) pulls the transmission connector (42) and the cleaning head (41) back into the connecting pipe (7).

2. The pipe blockage clearing device for conveying slurry according to claim 1, characterized in that: The cleaning head (41) includes a connector (411), a chain (412) and a scraper (413). The chain (412) has several strands and is evenly spaced around the surface of the connector (411). The scraper (413) is installed at one end of the chain (412).

3. The pipe blockage clearing device for conveying slurry according to claim 2, characterized in that: The inner wall of the bend joint (2) is embedded with a number of ball beads (10), and the inner wall of the bend joint (2) is equipped with a pressure sensor (9).

4. The pipe blockage clearing device for conveying slurry according to claim 1, characterized in that: The diameter of the slurry conveying pipe (3) is larger than the diameter of the bend joint (2).

5. A method for unblocking a pipeline for conveying slurry based on the device described in claim 3, comprising the following steps: S1: Detect whether there is a blockage in the pipe. The pressure value at the elbow joint (2) is monitored by the pressure sensor (9) and fed back to the background. If there is a blockage, the flow rate at the elbow joint (2) will decrease, the pressure will increase, and the pressure value will exceed the limit. S2: Control the slurry delivery pipe to close (3), and the slurry stops passing through the bend joint (2); S3: Lower the unblocking mechanism (4) to de-energize the electromagnetic adsorber (6), and under the action of gravity, the axial flow impeller (43) moves down to the lower end of the slide opening (11), while the cleaning scraper head (41) abuts against the one-way valve plate (8). S4: Open the clean water pipe (1) to input water flow with a certain flow rate and pressure. Part of the water flow enters the connecting pipe (7) to open the one-way valve plate (8), so that the transmission connector (42) and the cleaning scraper (41) enter the bend joint (2). The water flow also drives the axial flow impeller (43) to rotate. S5: The flow rate of water in the clean water pipe (1) is stabilized by the flow rate regulating valve (5), and the chain (412) and scraper (413) hit the scale layer on the pipe wall, and the clean water flow input by the connecting pipe (7) is used to flush and remove it. S6: Adjust the flow rate by adjusting the flow rate valve (5), and repeatedly increase and decrease the flow rate to make the axial flow impeller (43) move up and down repeatedly along the slide opening (11), driving the cleaning head (41) to move back and forth in the elbow joint (2) for a period of time to clear the blockage. S7: Reset, the electromagnetic adsorber (6) is energized with magnetic attraction, the flow rate regulating valve (5) increases the water flow speed and pushes the axial flow impeller (43) to the top of the slide opening (11). When the electromagnetic adsorber (6) adsorbs the first support (431), the axial flow impeller (43) pulls the transmission connector (42) and the cleaning head (41) back into the connecting pipe (7); S8: Open the slurry delivery pipe (3) and verify the pressure value data of the pressure sensor (9) for re-inspection.

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