A slurry pipeline blockage unblocking device and method

Abstract

The present application provides a kind of paste pipeline blockage dredging device, including pressure release device, dredging pipe, dredging pipe transport device and passage excavation device;The pressure release device includes the buffer pipe section of tubular hollow structure with the same diameter as the system main pipeline pipe diameter;Its one side outlet is connected with paste pipeline conveying system main pipeline;The dredging pipe has multiple, stacked in dredging pipe transport device;Each dredging pipe includes outer sleeve and spiral inner tube, spiral inner tube is sleeved into outer sleeve, spiral inner tube can rotate in outer sleeve, the dredging pipe transport device is used to store, rotate, push, recycle dredging pipe, also discloses corresponding dredging method;Can be blocked in paste pipeline system, especially hard blocked section is pressure-tight dredged.Avoids the material leakage discharge and environmental pollution problem caused by cutting pipe, has strong adaptability, high flexibility, is easy to use and has strong dredging performance.

Description

Technical Field

[0001] This invention relates to the field of slurry pipeline transportation, specifically to a slurry pipeline blockage clearing device and a clearing method. Background Technology

[0002] The slurry transported in slurry pipelines is a solid-liquid two-phase flow. Due to the settling characteristics of solid materials, the slurry has poor stability. Under conditions such as slurry pipeline shutdown, operating flow rate lower than the design flow rate, or system failure and power outage, the solid materials in the pipeline are prone to blockage due to settling, especially in sections with steep slopes. When pipelines become blocked, especially in cases of hard blockages, existing unblocking methods only involve pipeline excavation and cutting, which can lead to material leakage, environmental pollution, and significant economic losses. Therefore, a pressurized unblocking device and method have been developed to achieve pressurized, sealed, leak-proof, and non-discharge unblocking, effectively improving emergency response measures in case of blockages. This is a crucial measure for ensuring the smooth operation of the system and is of great significance. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this invention provides a device and method for unblocking slurry pipelines, which can solve the blockage problem during the operation of slurry pipeline systems.

[0004] The technical solution provided by this invention is: a slurry pipe blockage clearing device, comprising a pressurized delivery device, a clearing pipe, a clearing pipe transportation device, and a passage excavation device;

[0005] The pressurized delivery device includes a hollow tubular buffer section with the same diameter as the main pipeline of the system; a pressure adjustment device is installed on the buffer section; a low-pressure isolation gate and a high-pressure isolation gate are installed on both sides of the buffer section; the outlet end of the high-pressure isolation gate of the pressurized delivery device is connected to the main pipeline of the slurry pipeline transportation system.

[0006] Multiple unblocking pipes are stacked in an unblocking pipe transport device; each unblocking pipe includes an outer sleeve and a spiral inner tube, the spiral inner tube is fitted into the outer sleeve, the spiral inner tube can rotate inside the outer sleeve, and axial limiting supports are provided at both ends of the spiral inner tube; the outer circumference of the outer sleeve is covered with alternating tiny stripe-like protrusions, and both ends of the spiral inner tube and the outer sleeve are equipped with quick-connect fittings; continuous spiral blades are arranged axially on the outer circumference of the spiral inner tube, and the inside of the spiral inner tube is hollow;

[0007] The dredging pipe transport device is used to store, rotate, push, and retrieve dredging pipes. It can connect multiple dredging pipes sequentially along the axial direction to the excavation drill bit of the passage excavation device.

[0008] Furthermore, the pressure adjustment device includes an exhaust valve, a pressure gauge, and a pressure relief valve installed on the buffer pipe section.

[0009] Furthermore, the dredging pipe transportation device includes a storage vehicle for storing dredging pipes, the storage vehicle being self-powered and controlled by the device's control system; a pipe connection and transportation system for rotating and pushing the dredging pipes; a dredging pipe recovery system for recovering the dredging pipes; and a purging system for spraying blockage materials to a distance. The lower outlet of the storage vehicle is connected to the inlet of the pipe connection system, the axial outlet of the pipe connection system is connected to the passage excavation device via a dredging pipe, the lateral outlet of the pipe connection system is connected to the inlet of the dredging pipe recovery system, and the outlet of the dredging pipe recovery system is connected to the inlet of the storage vehicle.

[0010] Furthermore, the storage vehicle is equipped with a storage box and an upward direction rangefinder. The bottom of the storage box has a sloping structure on both sides, and a slot with the same diameter as the dredging pipe is opened along the bottom of the slope. The first upward direction rangefinder on the roof of the vehicle is associated with the vehicle's drive logic.

[0011] Furthermore, the pipe delivery system includes a pipe trench, an inlet gate, a lateral outlet gate, an axial pipe delivery device, and a pipe rotator. The pipe trench is a cuboid trench of the same length as the storage vehicle, with the bottom of the trench inclined toward the unblocking pipe recycling system. Under natural conditions, the unblocking pipe inside the trench will roll toward the unblocking pipe recycling system. The inlet gate is connected to the upper part of the pipe trench, and the outlet gate is connected to the side of the pipe trench. Pipe rotators are installed at both ends of the pipe trench, and an axial pipe delivery device is always installed in the pipe trench.

[0012] Furthermore, the pipe rotator includes a semi-circular rack and a pipe pre-clamping clamp. The pipe pre-clamping clamp extends and retracts radially along the semi-circular rack, which is driven to rotate axially by a circumferential drive gear device. The axial pipe conveyor includes a pair of controllable rotating shaft devices, one of which is arranged on one side wall of the pipe trench, and the other is arranged at the outlet gate. The lateral outlet gate can move with the gate. The rotating shaft device is provided with alternating small stripe-like protrusions similar to those on the unblocking pipe to increase friction.

[0013] Furthermore, the dredging pipe recycling system includes an L-shaped guide channel set on one side of the pipe channel, a horizontal conveying device and a vertical conveying device set at the bottom of the guide channel; the vertical conveying device has a tray with a one-way folding function, and is connected to the tray wall by a one-way hinge by an L-shaped support; the side wall of the storage tank is provided with a U-shaped groove to facilitate the passage of the tray when it rotates at the top.

[0014] Furthermore, the purging system includes a purging pump and a purging pipeline. The inlet of the purging pipeline is located at the upper front end of the storage vehicle, and the outlet of the purging pipeline is located at the bottom of the tail end of the pipeline. The purging pump is located at the inlet of the purging pipeline.

[0015] Furthermore, the passage excavation device includes a drive vehicle, an excavation drill bit located at the front end of the drive vehicle, a circumferential gear drive device, an end-of-line dredging pipe, and an upward-direction distance measuring instrument. The end-of-line dredging pipe is fixed to the drive vehicle, and its main structure is the same as that of other dredging pipes. The excavation rotor is fixedly connected to the front end of the spiral inner tube of the end-of-line dredging pipe. The circumferential drive gear device drives the spiral inner tube inside the end-of-line dredging pipe and the excavation rotor to rotate. The rear end of the outer sleeve of the end-of-line dredging pipe is provided with a quick-connect fitting for connecting with other dredging pipes behind it. The front end of the outer sleeve of the end-of-line dredging pipe extends forward and outward to form a circular flared mouth, and the diameter of the front of the circular flared mouth is larger than the circumferential diameter of the tail of the excavation rotor. Multiple water outlet holes are equidistantly arranged on the same horizontal cross-section of the conical surface of the excavation rotor. The holes are equipped with one-way outward-opening cover plates. The internal passages of the multiple water outlet holes converge inside the rotor and connect to the spiral inner tube of the end-of-line dredging pipe.

[0016] As another aspect of the present invention, a method for unblocking a slurry pipe blockage device is also provided, comprising the following steps:

[0017] (1) Device deployment: The high-pressure side isolation gate, low-pressure side isolation gate, exhaust valve, and pressure relief valve on the pressurized deployment device are normally closed. When the blockage is cleared, the pressure relief valve is opened to release the pressure inside the pressurized deployment device. After the pressure drops to normal pressure, the low-pressure side isolation gate is opened, and the dredging and transportation device and the passage excavation device are deployed into the buffer pipe. At this time, the dredging and transportation device and the passage excavation device are connected as one unit through the end dredging pipe. The low-pressure side isolation gate is closed, the pressure relief valve is opened, the exhaust valve is opened, and water is injected into the buffer pipe through the pressure relief port on the pressure relief valve. When water comes out of the exhaust valve, the exhaust valve is closed. Water is injected through the pressure relief port until the pressure gauge pressure is the same as the pressure of the main pipeline of the system. Water injection is stopped and the pressure relief valve is closed. The high-pressure side isolation gate is slowly opened to connect the buffer pipe with the main pipeline of the system. The dredging and transportation device and the passage excavation device drive into the main pipeline of the system. At this time, the liquid in the pipeline is in a static state. The dredging vehicle is equivalent to walking in a static liquid with little resistance.

[0018] (2) Initial arrival at the blockage point: The dredging and transportation device and the road excavation device move along the main pipeline, and the solid material at the blockage point is distributed in a slope shape along the bottom of the pipe; as the dredging and transportation device and the road excavation device move closer to the blockage point, the distance between the top of the device and the top of the pipe gradually approaches; when the distance measuring instrument of the dredging and transportation device in the upward direction approaches 0 (that is, the upper end has already pressed against the pipe wall), the dredging and transportation device and the road excavation device stop moving.

[0019] (3) Approaching the dredging point: Open the inlet gate of the pipe connection system and close the lateral outlet gate; the pipe rotator in the pipe connection system of the dredging and transportation device operates to screw the dredging pipe placed in the pipe trench at this time to the end dredging pipe of the passage excavation device; the axial pipe conveyor of the pipe connection system of the dredging and transportation device continues to operate to convey the multiple dredging pipes that subsequently slide from the storage box into the pipe trench forward in sequence; at the same time, the passage excavation device moves forward and repeats the aforementioned pipe conveying action until the second upward direction distance measuring instrument of the passage excavation device approaches, at which point the passage excavation device stops moving;

[0020] (4) Access Excavation: The excavation drill bit of the access excavation device starts to rotate, and the inner spiral tube of the middle dredging pipe rotates simultaneously with the drill bit. The purging pump of the dredging pipe transportation device starts, and the access excavation device moves forward. After the excavated solid material passes through the excavation drill bit, it is pushed to the tail end of the dredging transportation device by the spiral blades on the inner spiral tube of the end dredging pipe and the inner spiral tube of the middle dredging pipe. The material is then sprayed to a further distance by the water flow of the purging pump. During the access excavation process, the steps of connecting and transporting pipes are repeated to ensure that the access excavation device continues to move forward and the excavated solid material continues to be transported backward. The excavation continues until a smooth passage is formed in the blocked section.

[0021] (5) Enlarging the passage: The excavation drill bit of the passage excavation device stops rotating, the pipeline system starts to transport water, and the water flows through the spiral inner pipe passage from the tail end of the dredging and transport device to the excavation drill bit, and then sprays out through the water outlet hole of the excavation drill bit. The high-speed water flow carries away the solid particles around the drill bit and enlarges the passage hole; if necessary, the excavation drill bit can be restarted to cooperate with the water flow to enlarge the passage.

[0022] After the water flow stabilizes, close the inlet gate of the pipe connection system, open the lateral outlet gate, and start the lateral and longitudinal conveying devices of the dredging pipe recovery system. The passage excavation device slowly retracts along the original path, and the drill bit sprays water to gradually widen the passage. At the same time, the axial pipe conveyor of the pipe connection system rotates in the opposite direction to send the dredging pipe back to the pipe trench of the pipe connection system. Through the lateral and longitudinal conveying devices, the dredging pipe is returned to the storage vehicle of the dredging transport device by the pallet. The passage excavation device continues to retract until it returns to the dredging transport vehicle.

[0023] The flow rate of the original pipeline system gradually increases, and the small cross-section passage is gradually expanded until the entire cross-section of the blocked section is opened.

[0024] (6) Equipment Recovery: The dredging and transportation device and the passage excavation device return along the original route of the main pipeline and proceed to the pressurized delivery device pipe; close the high-pressure side isolation gate to isolate the buffer pipe from the main system pipeline; open the pressure relief valve and when the pressure gauge pressure drops to normal pressure, open the low-pressure side isolation gate, recover the dredging and transportation device and the passage excavation device, and close the low-pressure side isolation gate and the pressure relief valve. Beneficial Effects of the Invention:

[0025] (1) The slurry pipeline blockage clearing device and method of the present invention clears blockages, especially hard blockages, in the slurry pipeline system under pressure and in a sealed manner. This avoids the pipeline excavation and cutting methods used in the prior art, thus solving the problems of material leakage and environmental pollution caused by these methods. At the same time, it helps to shorten the handling cycle of pipe blockage accidents, simplify the handling process, and reduce the economic losses caused by accident handling and production disruptions.

[0026] (2) The slurry pipe blockage clearing device and method of the present invention continuously connects different numbers of clearing pipes between the clearing transport vehicle and the passage excavation device according to the length of the blockage section until a passage is formed in the blockage section. The device has strong adaptability when the length of the blockage section is unpredictable, ensuring effective clearing of the blockage.

[0027] (3) The slurry pipeline blockage clearing device and clearing method of the present invention integrates functions such as passage excavation, material return, water flow clearing and hole expansion. It is highly flexible, easy to use and has strong clearing performance, and can be widely used in slurry pipeline clearing.

[0028] (4) The slurry pipe blockage clearing device and clearing method of the present invention, by carrying out small cross-section passage excavation at the top of the blockage section, and then gradually expanding the hole with the help of the original system water supply until the entire cross-section of the blockage section is opened, minimizes the amount of clearing excavation, extends the continuous operation time, and improves the clearing efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the pressurized dispensing device according to a preferred embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the unblocking pipe structure according to a preferred embodiment of the present invention;

[0031] Figure 3 This is a front view of the dredging pipe transport device according to a preferred embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the storage tank with a U-shaped groove in a preferred embodiment of the present invention;

[0033] Figure 5 This is a cross-sectional view of section A of the dredging pipe transport device according to a preferred embodiment of the present invention;

[0034] Figure 6 This is a cross-sectional view of section B of the dredging pipe transport device according to a preferred embodiment of the present invention;

[0035] Figure 7 This is a side view of the preferred embodiment of the access excavation device of the present invention;

[0036] Figure 8This is a top view (horizontally cut-open structural diagram) of the preferred embodiment of the access excavation device of the present invention;

[0037] Figure 9 This is a schematic diagram illustrating the operation process of a preferred embodiment of the present invention;

[0038] The reference numerals in the diagram represent: 1-pressurized delivery device, 2-dredging pipe, 3-dredging pipe transportation device, 4-channel excavation device, 101-low-pressure side isolation gate, 102-air vent valve, 103-buffer section, 104-pressure gauge, 105-pressure relief valve, 106-high-pressure side isolation gate, 201-outer casing, 202-spiral inner casing, 203-quick coupling, 301-storage tank, 302-no. 1 upward direction rangefinder, 303-pipe trench, 304-inlet gate. 305—lateral outlet gate, 306—axial pipe conveyor, 307—pipe rotator, 308—guide trough, 309—lateral conveying device, 310—vertical conveying device, 311—pallet, 312—purge pump, 313—purge pipeline, 314—U-shaped trough, 401—drive vehicle, 402—drill bit, 403—circumferential gear drive device, 404—end dredging pipe, 405—second upward direction rangefinder, 406—outlet hole, 407—circular bell mouth. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1:

[0041] Please refer to Figure 1 This embodiment provides a slurry pipe blockage clearing device, specifically including a pressurized delivery device 1, a clearing pipe 2, a clearing pipe transportation device 3, and a passage excavation device 4;

[0042] The pressurized delivery device 1 includes a hollow tubular buffer section 103 with the same diameter as the main pipeline of the system; a pressure adjustment device is provided on the buffer section 103; specifically, the pressure adjustment device includes an exhaust valve 102, a pressure gauge 104 and a pressure relief valve 105 provided on the buffer section 103.

[0043] The buffer pipe section 103 is equipped with a low-pressure side isolation gate 101 and a high-pressure side isolation gate 106 on both sides; the outlet end of the high-pressure side isolation gate 106 of the pressurized delivery device 1 is connected to the main pipeline of the slurry pipeline transportation system.

[0044] Please refer to Figures 2-3 Multiple unblocking pipes 2 are stacked in the unblocking pipe transport device 3; each unblocking pipe 2 includes an outer sleeve 201 and a spiral inner tube 202. The spiral inner tube is inserted into the outer sleeve, and the spiral inner tube 202 and the outer sleeve 201 are fitted with a clearance. The spiral inner tube 202 can rotate inside the outer sleeve 201. Axial limiting supports are set at both ends of the spiral inner tube. The outer circumference of the outer sleeve 201 is covered with alternating small stripe-like protrusions to increase friction. Both ends of the spiral inner tube and the outer sleeve 201 are equipped with quick-connect couplings 203, such as threaded or snap-fit ​​structures. Continuous spiral blades are arranged axially on the outer circumference of the spiral inner tube 202. The spiral inner tube 202 is hollow inside. The ends of the outer sleeve 201 can be set as complementary stepped beveled surfaces.

[0045] The dredging pipe transport device 3 is used for storing, rotating, pushing, and recovering the dredging pipe 2. It can sequentially connect and push multiple dredging pipes 2 along the axial direction to the excavation drill bit 402 of the passage excavation device 4. In some preferred embodiments...

[0046] The surface of the excavating drill bit 402 can be provided with bullet-shaped protrusions to facilitate excavation.

[0047] As a preferred embodiment, the dredging pipe transport device 3 includes a storage vehicle for storing the dredging pipe 2, which is self-powered and controlled by the device's control system; a connecting pipe transport system for rotating and pushing the dredging pipe 2; a dredging pipe recovery system for recovering the dredging pipe 2; and a purging system for spraying blockage material to a distance. The lower outlet of the storage vehicle is connected to the inlet of the connecting pipe system, the axial outlet of the connecting pipe system is connected to the passage excavation device 4 via the dredging pipe connection 2, the lateral outlet of the connecting pipe system is connected to the inlet of the dredging pipe recovery system, and the outlet of the dredging pipe recovery system is connected to the inlet of the storage vehicle.

[0048] As a preferred embodiment, in order to accurately determine the movement position and status of the storage vehicle, the storage vehicle is equipped with a storage box 301 and an upward direction rangefinder 302. The bottom sides of the storage box 301 have a sloping structure, and slots with the same diameter as the dredging pipe are opened along the bottom of the slope. The first upward direction rangefinder 302 on the top of the vehicle is associated with the vehicle drive logic.

[0049] Please refer to Figures 4-6 The pipeline system includes a pipe trench 303, an inlet gate 304, a lateral outlet gate 305, an axial pipe conveyor 306, and a pipe rotator 307. The pipe trench 303 is a cuboid trench of the same length as the storage vehicle. The bottom of the pipe trench 303 is inclined towards the unblocking pipe recycling system. Under natural conditions, the unblocking pipe inside the pipe trench 303 will roll towards the unblocking pipe recycling system. The inlet gate 304 is connected to the upper part of the pipe trench, and the outlet gate 305 is connected to the side of the pipe trench. Pipe rotators 307 are set at both ends of the pipe trench, and axial pipe conveyors 306 are always set in the pipe trench.

[0050] The pipe rotator 307 includes a semi-circular rack and a pipe pre-clamp. The pipe pre-clamp extends and retracts radially along the semi-circular rack, which is driven to rotate axially by a circumferential drive gear device. The axial pipe conveyor 306 includes a pair of controllable rotating shaft devices, one of which is arranged on one side wall of the pipe trench 303, and the other is arranged at the outlet gate 305. The lateral outlet gate 305 can move with the gate. The rotating shaft device is provided with alternating small stripe-like protrusions similar to those on the unblocking pipe to increase friction.

[0051] The unblocking pipe recycling system includes an L-shaped guide trough 308 set on one side of the pipe trough 303, and a horizontal conveying device 309 set at the bottom of the guide trough. The horizontal conveying device can be a belt conveyor mechanism. To increase friction, the surface can be provided with alternating strip-shaped protrusions and a vertical conveying device 310. The vertical conveying device has a tray 311 with a one-way folding function, which is connected by an L-shaped support and a tray wall through a one-way hinge. The side wall of the storage tank 301 is provided with a U-shaped groove 314 to facilitate the passage of the tray 311 when it rotates at the top.

[0052] The purging system includes a purging pump 312 and a purging pipeline 313. The inlet of the purging pipeline is located at the upper front end of the storage vehicle, and the outlet of the purging pipeline is located at the bottom of the tail end of the pipe trough 303. The purging pump 312 is located at the inlet of the purging pipeline.

[0053] Please refer to Figures 7-9 As a preferred embodiment, the access excavation device includes a drive vehicle 401, an excavation drill bit 402 disposed at the front end of the drive vehicle, a circumferential gear drive device 403, an end-mounted dredging pipe 404, and an upward-direction rangefinder 405. The end-mounted dredging pipe 404 is fixed to the drive vehicle, and its main structure is the same as that of other dredging pipes. The excavation rotor 402 is fixedly connected to the front end of the spiral inner tube of the end-mounted dredging pipe 404. The circumferential drive gear device 403 drives the spiral inner tube and the excavation rotor to rotate. The rear end of the outer sleeve of the end-mounted dredging pipe 404 is provided with a movable type for connecting to other dredging pipes behind it. The quick-connector, such as the stepped type or the snap-fit ​​type, extends forward and outward from the front end of the outer sleeve of the end dredging pipe 404 to form a circular flared mouth 407. The diameter of the front of the circular flared mouth is larger than the circumference diameter of the tail of the excavating head. Only when the circumference diameter here is large can the particles drilled down by the excavating head enter the conveying channel between the spiral inner tube and the outer sleeve of the dredging pipe. Otherwise, they cannot enter smoothly. Multiple water outlet holes 406 are arranged at equal intervals on the same horizontal cross-section of the conical surface of the excavating head. The holes are equipped with one-way outward opening cover plates. The internal passages of the multiple water outlet holes are converged inside the head and connected to the spiral inner tube of the end dredging pipe 404.

[0054] Example 2:

[0055] To improve the device's adaptability to different slurries, the inner spiral tube 202 of the unblocking pipe 2 is equipped with variable pitch spiral blades. For example, the blades are designed to rotate circumferentially around their bottom vertical axis. The pitch of the spiral blades varies along the length of the inner spiral tube 202 to accommodate slurries of different densities and viscosities. For slurries with higher viscosity, a larger pitch can reduce the frictional resistance between the spiral blades and the slurry, making it easier for the slurry to flow along the spiral blades. Conversely, for slurries with lower viscosity, a smaller pitch can increase the contact area between the blades and the slurry, improving conveying efficiency; thus optimizing the material conveying efficiency during the unblocking process.

[0056] Simultaneously, an adaptive adjustment mechanism is designed, which includes a sensor for monitoring the flow characteristics of the slurry and a control system for controlling the pitch adjustment of the helical blades. The control system automatically adjusts the pitch of the helical blades according to the data provided by the sensor and a preset algorithm to achieve adaptability to different slurry characteristics.

[0057] Example 3:

[0058] Embodiments of the present invention also provide a method for unblocking a slurry pipe using a slurry pipe unblocking device, comprising the following steps:

[0059] (1) Device deployment: The high-pressure side isolation gate 106, low-pressure side isolation gate 101, exhaust valve 102, and pressure relief valve 105 on the pressurized deployment device are normally closed. When the blockage clearing begins, the pressure relief valve 105 is opened to release the pressure inside the pressurized deployment device 1. After the pressure drops to normal pressure, the low-pressure side isolation gate 101 is opened, and the dredging and transportation device 3 and the passage excavation device 4 are deployed into the buffer pipe 103. At this time, the dredging and transportation device 3 and the passage excavation device 4 are connected as one unit through the end dredging pipe 404. The low-pressure side isolation gate is closed. Open the pressure relief valve 105 and the exhaust valve 102. Inject water into the buffer pipe through the pressure relief port on the pressure relief valve. When water comes out of the exhaust valve, close the exhaust valve and continue to inject water through the pressure relief port until the pressure gauge pressure is the same as the pressure of the main pipeline of the system. Stop injecting water and close the pressure relief valve. Slowly open the high-pressure side isolation gate 106 to connect the buffer pipe with the main pipeline of the system. The dredging and transportation device 3 and the passage excavation device 4 drive into the main pipeline of the system. At this time, the liquid in the pipeline is in a static state. The dredging vehicle is equivalent to walking in static liquid with little resistance.

[0060] (2) Initial arrival at the blockage point: The dredging and transportation device 3 and the passage excavation device 4 move along the main pipeline, and the solid material at the blockage point is distributed in a slope shape along the bottom of the pipe; as the dredging and transportation device and the passage excavation device move closer to the blockage point, the distance between the top of the device and the top of the pipe gradually approaches; when the distance measuring instrument of the dredging and transportation device in the upward direction approaches 0 (that is, the upper end has already pressed against the pipe wall), the dredging and transportation device and the passage excavation device stop moving;

[0061] (3) Approaching the dredging point: Open the inlet gate 304 of the pipe connection system and close the lateral outlet gate 305; the pipe rotator 307 of the pipe connection system of the dredging and transportation device operates to screw the dredging pipe 2 placed in the pipe trench 303 at this time to the end dredging pipe 404 of the passage excavation device; the axial pipe conveyor 306 of the pipe connection system of the dredging and transportation device 3 continues to operate to convey the multiple dredging pipes 2 that subsequently slid from the storage box 301 into the pipe trench 303 forward in sequence; at the same time, the passage excavation device 4 moves forward and repeats the aforementioned pipe conveying action until the second upward direction distance measuring instrument 405 of the passage excavation device 4 approaches 0, at which point the passage excavation device 4 stops moving.

[0062] (4) Passage excavation: The excavation drill bit 402 of the passage excavation device starts to rotate, and the inner spiral tube 202 of the middle dredging pipe 2 rotates simultaneously with the drill bit. The purging pump of the dredging pipe transportation device starts, and the passage excavation device moves forward. After the excavated solid material passes through the excavation drill bit, it is pushed to the tail end of the dredging transportation device by the spiral blades on the inner spiral tube of the end dredging pipe 404 and the inner spiral tube of the middle dredging pipe 2. The material is then sprayed to a further distance by the water flow of the purging pump 312. During the passage excavation process, the pipe connection and transportation actions in step 3 are repeated to ensure that the passage excavation device continues to move forward and the excavated solid material continues to be transported backward. The excavation continues until a smooth passage is formed in the blocked section.

[0063] As a preferred option, overload protection sensors can also be integrated into key components of the dredging pipe transport device 3, such as the axial pipe conveyor 306, the pipe rotator 307, and the purging system 312. When the system detects a force or torque exceeding the design load, the overload protection system will automatically disconnect or adjust the power output to protect the equipment from damage.

[0064] (5) Enlarging the passage: The excavation drill bit of the passage excavation device 4 stops rotating, the pipeline system starts to transport water, and the water flows through the spiral inner pipe passage from the tail end of the dredging and transport device to the excavation drill bit, and then sprays out through the water outlet hole 406 of the excavation drill bit. The high-speed water flow carries away the solid particles around the drill bit and enlarges the passage hole; if necessary, the excavation drill bit can be restarted to cooperate with the water flow to enlarge the passage.

[0065] After the water flow stabilizes, close the inlet gate 304 of the pipe connection system, open the lateral outlet gate 305, and start the transverse conveying device 309 and longitudinal conveying device 310 of the dredging pipe recovery system; the passage excavation device 305 slowly retracts along the original path, and the drill bit sprays water to gradually widen the passage; at the same time, the axial pipe conveyor 306 of the pipe connection system rotates in the opposite direction to send the dredging pipe back to the pipe trench 303 of the pipe connection system; through the transverse conveying device and the longitudinal conveying device, the dredging pipe is returned to the storage vehicle of the dredging transport device by the pallet 311; the passage excavation device 4 continues to retract until it returns to the dredging transport vehicle;

[0066] The flow rate of the original pipeline system gradually increases, and the small cross-section passage is gradually expanded until the entire cross-section of the blocked section is opened.

[0067] (6) Device recovery: The dredging and transportation device 3 and the passage excavation device 4 return along the original route of the main pipeline and proceed to the pressurized delivery device 1 pipe; close the high-pressure side isolation gate 106 to isolate the buffer pipe from the main pipeline of the system; open the pressure relief valve 105 and when the pressure gauge pressure drops to normal pressure, open the low-pressure side isolation gate, recover the dredging and transportation device and the passage excavation device, and close the low-pressure side isolation gate 101 and the pressure relief valve 105.

[0068] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements 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 slurry pipes, characterized in that: The system includes a pressurized delivery device, a dredging pipe, a dredging pipe transport device, and a passage excavation device. The pressurized delivery device includes a hollow tubular buffer section with a diameter identical to the main pipeline of the system. A pressure regulating device is installed on the buffer section. Low-pressure isolation gates and high-pressure isolation gates are installed on both sides of the buffer section. The outlet end of the high-pressure isolation gate of the pressurized delivery device is connected to the main pipeline of the slurry pipeline transport system. Multiple dredging pipes are stacked within the dredging pipe transport device. Each dredging pipe includes an outer casing and a spiral... The inner tube, a spiral inner tube, is fitted into the outer tube. The spiral inner tube can rotate within the outer tube, and axial limiting supports are provided at both ends of the spiral inner tube. The outer circumference of the outer tube is covered with alternating small stripe-like protrusions. Both ends of the spiral inner tube and the outer tube are equipped with quick-connect fittings. Continuous spiral blades are arranged axially along the outer circumference of the spiral inner tube, and the interior of the spiral inner tube is hollow. The unblocking pipe transport device is used for storing, rotating, pushing, and recovering unblocking pipes. It can sequentially connect and push out multiple unblocking pipes along the axial direction to the excavation drill bit of the passage excavation device.

2. The device for unblocking slurry pipes according to claim 1, characterized in that: The pressure adjustment device includes an exhaust valve, a pressure gauge, and a pressure relief valve installed on the buffer pipe section.

3. The device for unblocking slurry pipes according to claim 1, characterized in that: The dredging pipe transportation device includes a storage vehicle for storing dredging pipes, a pipe connection and transportation system for rotating and pushing dredging pipes, a dredging pipe recovery system for recovering dredging pipes, and a purging system for spraying blockage material to a distance. The lower outlet of the storage vehicle is connected to the inlet of the pipe connection system, the axial outlet of the pipe connection system is connected to the passage excavation device through a dredging pipe, the lateral outlet of the pipe connection system is connected to the inlet of the dredging pipe recovery system, and the outlet of the dredging pipe recovery system is connected to the inlet of the storage vehicle.

4. The slurry pipe blockage clearing device according to claim 3, characterized in that: The storage vehicle is equipped with a storage tank and a No. 1 upward direction rangefinder. The bottom of the storage tank has a sloping structure on both sides, and a slot with the same diameter as the dredging pipe is opened along the bottom of the slope. The No. 1 upward direction rangefinder on the roof is associated with the vehicle's drive logic.

5. The slurry pipe blockage clearing device according to claim 3, characterized in that: The pipe delivery system includes a pipe trench, an inlet gate, a lateral outlet gate, an axial pipe delivery device, and a pipe rotator. The pipe trench is a cuboid trough of the same length as the storage vehicle, with the bottom of the trench inclined towards the dredging and recycling system. The inlet gate is connected to the upper part of the pipe trench, and the lateral outlet gate is connected to the side of the pipe trench. Pipe rotators are installed at both ends of the pipe trench, and an axial pipe delivery device is installed throughout the pipe trench.

6. The slurry pipe blockage clearing device according to claim 5, characterized in that: The pipe rotator includes a semi-circular rack and a pipe pre-clamp. The pipe pre-clamp extends and retracts radially along the semi-circular rack. The semi-circular rack is driven to rotate axially by a circumferential gear drive device and can drive the drain pipe to rotate. The axial pipe conveyor includes a pair of controllable rotating shaft devices, one of which is arranged on one side wall of the pipe trench, and the other is arranged at a lateral outlet gate. The lateral outlet gate can move with the gate. The rotating shaft device is covered with the same alternating small stripe-like protrusions as the drain pipe.

7. The device for unblocking slurry pipes according to claim 3, characterized in that: The unclogging pipe recycling system includes an L-shaped conduit trough located on one side of the pipe trough, a horizontal conveying device and a vertical conveying device located at the bottom of the conduit trough; the vertical conveying device has trays spaced apart on its surface; and the side wall of the storage tank is provided with a U-shaped groove to facilitate the passage of the trays when they rotate at the top.

8. A device for unblocking slurry pipes according to claim 3, characterized in that: The purging system includes a purging pump and a purging pipeline. The inlet of the purging pipeline is located at the upper front of the storage vehicle, and the outlet of the purging pipeline is located at the bottom of the tail end of the pipeline. The purging pump is located at the inlet of the purging pipeline.

9. A device for unblocking slurry pipes according to any one of claims 1-8, characterized in that: The passage excavation device includes a drive vehicle, an excavation drill bit located at the front end of the drive vehicle, a circumferential gear drive device, an end-of-line dredging pipe, and a second upward-direction rangefinder. The end-of-line dredging pipe is fixed to the drive vehicle, and its main structure is the same as other dredging pipes. The excavation drill bit is fixedly connected to the front end of the spiral inner tube of the end-of-line dredging pipe. The circumferential gear drive device drives the spiral inner tube and the excavation drill bit to rotate. The rear end of the outer sleeve of the end-of-line dredging pipe is provided with a quick-connect fitting for connecting with other dredging pipes behind it. The front end of the outer sleeve of the end-of-line dredging pipe extends forward and outward to form a circular flared mouth, and the diameter of the front of the circular flared mouth is larger than the circumferential diameter of the tail of the excavation drill bit. Multiple water outlet holes are equidistantly arranged on the same horizontal cross-section of the conical surface of the excavation drill bit. The holes are equipped with one-way outward-opening cover plates. The internal passages of the multiple water outlet holes converge inside the drill bit and connect to the spiral inner tube of the end-of-line dredging pipe.

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