Slurry pipeline blockage dredging device and dredging method

Abstract

The invention provides a slurry pipeline blockage dredging device. The slurry pipeline blockage dredging device comprises an under-pressure feeding device, a dredging pipe, a dredging pipe conveying device and a passage excavation device, the under-pressure releasing device comprises a buffer pipe section which is of a tubular hollow structure and has the same diameter as the pipe diameter of the system main pipeline; an outlet end on one side of the main pipeline is connected with a main pipeline of the slurry pipeline conveying system; the plurality of dredging pipes are stacked in the dredging pipe conveying device; each dredging pipe comprises an outer sleeve and a spiral inner pipe, the spiral inner pipe is sleeved with the outer sleeve, the spiral inner pipe can rotate in the outer sleeve, the dredging pipe conveying device is used for storing, rotating, pushing and recycling the dredging pipes, and the invention further discloses a corresponding dredging method. And a blocked section, particularly a hard blocked section, in a slurry pipeline system can be subjected to closed dredging under pressure. And the problems of material leakage and discharge and environmental pollution caused by pipe cutting are avoided, the adaptability is high, the flexibility is high, the use is convenient, and the dredging performance is high.

Description

Technical Field

[0001] The invention relates to the field of slurry pipeline transportation, in particular to a slurry pipeline blockage dredging device and a dredging method. Background Art

[0002] The slurry transported in slurry pipeline transportation is a solid-liquid two-phase flow. Since solid materials have sedimentation characteristics, the slurry stability is poor. When the slurry pipeline transportation system stops transporting slurry, the operating flow rate is lower than the design flow rate, or the system fails and the power goes out, the solid materials in the pipeline are very likely to become blocked due to sedimentation, especially in the pipe section with a large slope. When the pipeline is blocked, especially in the case of hard blockage, the existing clearing methods can only implement pipeline excavation and pipe cutting, which will cause the discharge and leakage of materials, causing environmental pollution while losing materials, and causing great economic losses. Therefore, a pressurized dredging device and method are formed to realize a pressurized, closed, non-leakage, and non-emission dredging method, which can effectively improve the emergency measures when blockage occurs, is an important transportation guarantee measure for system operation, and is of great significance. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a slurry pipeline blockage dredging device and a dredging method, which can solve the blockage problem during the operation of the slurry pipeline system.

[0004] The technical solution provided by the present invention is: a slurry pipeline blockage dredging device, comprising a pressure delivery device, a dredging pipe, a dredging pipe transportation device and a passage excavation device;

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

[0006] There are multiple dredging pipes, which are stacked in the dredging pipe transport device; each dredging pipe includes an outer sleeve and a spiral inner pipe, the spiral inner pipe is inserted into the outer sleeve, the spiral inner pipe can rotate in the outer sleeve, and axial limit brackets are arranged at both ends of the spiral inner pipe; the outer circumference of the outer sleeve is provided with alternating tiny stripe-shaped protrusions, and the two end pipe openings of the spiral inner pipe and the outer sleeve are both provided with movable quick connectors; the outer circumference of the spiral inner pipe is arranged with continuous spiral blades along the axial direction, and the interior of the spiral inner pipe is hollow;

[0007] The dredging pipe transport device is used for storing, rotating, pushing and recovering dredging pipes, and can push out a plurality of dredging pipes in sequence along the axial direction to be connected to the excavation drill bit of the passage excavation device.

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

[0009] Furthermore, the dredging pipe transportation device includes a pipe storage vehicle for storing dredging pipes, the pipe storage vehicle has its own power and is controlled by the control system of the device, and is equipped with 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 blocked materials to a distant place; the pipe outlet at the lower end of the pipe storage vehicle is connected to the pipe inlet of the pipe connection system, the axial pipe outlet of the pipe connection system is connected to the passage excavation device through the dredging pipe, the lateral pipe 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 pipe storage vehicle.

[0010] Furthermore, the pipe storage vehicle is provided with a pipe storage box and an upward distance meter. The bottom of the pipe storage box has sloped structures on both sides, and slots with the same diameter as the dredging pipe are opened along the bottom of the slope. The No. 1 upward distance meter on the roof is logically associated with the vehicle drive.

[0011] Furthermore, the pipe connection and pipe transportation system includes a pipe trough, a pipe inlet gate, a lateral pipe outlet gate, an axial pipe conveyor and a pipe rotator; the pipe trough is a rectangular trough body of the same length as the pipe storage vehicle, and the bottom of the pipe trough is inclined toward the side of the dredging pipe recovery system. Under natural conditions, the dredging pipe inside the pipe trough will roll toward the side of the dredging pipe recovery system. The upper part of the pipe trough is connected to the pipe inlet gate, and the side of the pipe trough is connected to the pipe outlet gate. Pipe rotators are arranged at both ends of the pipe trough, and an axial pipe conveyor is always arranged in the pipe trough.

[0012] Furthermore, the pipe rotator includes a semicircular rack and a pipe pre-tightening clamp, the pipe pre-tightening clamp radially extends and contracts along the semicircular rack, and the semicircular rack is driven by a circumferential driving gear device to rotate axially; the axial pipe conveyor includes a pair of controllably rotatable rotating shaft devices, one of which is arranged on a side wall of the pipe groove, and the other is arranged on the pipe outlet gate, and the lateral pipe outlet gate can move with the gate; the rotating shaft device is provided with alternating tiny striped protrusions similar to those of the dredging pipe to increase friction.

[0013] Furthermore, the dredging pipe recovery system includes an L-shaped conduit groove arranged on one side of the pipe groove, a horizontal conveying device and a vertical conveying device arranged at the bottom of the conduit groove; the vertical conveying device has a support plate arranged with a surface interval and has a one-way folding function, and is connected by an L-shaped support and a support wall through a one-way hinge; a U-shaped groove is arranged on the side wall of the pipe storage box to facilitate the passage of the support plate when rotating at the top.

[0014] Furthermore, the purge system includes a purge pump and a purge pipeline, the purge pipeline inlet is arranged at the upper front end of the pipe storage vehicle, and the purge pipeline outlet is arranged at the bottom of the rear end of the pipe groove; the purge pump is set at the purge pipeline inlet.

[0015] Furthermore, the passage excavation device includes a driving vehicle, an excavation drill bit arranged at the front end of the driving vehicle, a circumferential gear driving device, a terminal dredging pipe and an upward rangefinder; the terminal dredging pipe is fixed on the driving vehicle, the main structure of the terminal dredging pipe 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 terminal dredging pipe, and the circumferential driving gear device drives the spiral inner tube and the excavation rotor in the terminal dredging pipe to rotate; the rear end of the outer sleeve of the terminal dredging pipe is provided with a movable quick connector for connecting with other dredging pipes at the rear, the front end of the outer sleeve of the terminal dredging pipe extends forward and outward to form a circular trumpet, and the front diameter of the circular trumpet is larger than the circumferential diameter of the tail of the excavation rotor; a plurality of water outlets are equidistantly arranged on the same horizontal section of the conical surface of the excavation rotor, and the holes are provided with a one-way outward opening cover plate, and the internal passages of the plurality of water outlets are connected to the spiral inner tube of the terminal dredging pipe after being gathered inside the rotor.

[0016] Another aspect of the present invention also relates to a method for unclogging a slurry pipeline blockage using a device for unclogging a slurry pipeline, comprising the following steps:

[0017] (1) Device placement: The high-pressure side isolation gate, low-pressure side isolation gate, exhaust valve, and pressure relief valve on the pressurized placement device are normally in a normally closed state; at the beginning of the blockage removal, open the pressure relief valve to release the pressure in the pressurized placement device. After the pressure drops to normal pressure, open the low-pressure side isolation gate, and place the dredging and transportation device and the passage excavation device into the buffer pipe. At this time, the dredging and transportation device and the passage excavation device are connected as a whole through the end dredging pipe; close the low-pressure side isolation gate, open the pressure relief valve, open the exhaust valve, and inject water into the buffer pipe through the pressure relief port on the pressure relief valve. When the exhaust valve discharges water, close the exhaust valve and continue to inject water through the pressure relief port. When the pressure on the pressure gauge is the same as the system main line pressure, stop injecting water and close the pressure relief valve; slowly open the high-pressure side isolation gate to connect the buffer pipe and the system main line. The dredging and transportation device and the passage excavation device drive into the system main line. At this time, the liquid in the pipeline is in a static state, and the dredging vehicle is equivalent to walking in static liquid without much resistance;

[0018] (2) Initial arrival at the blockage point: The dredging and transporting device and the passage excavation device move along the main pipeline, and the solid materials at the blockage point are distributed in a slope along the bottom of the pipe; as the dredging and transporting device and the passage excavation device move toward the blockage point, the distance between the top of the device and the top of the pipe gradually approaches; when the distance meter of the dredging and transporting device in the upward direction approaches 0 (that is, the upper end has already pressed against the pipe wall), the dredging and transporting device and the passage excavation device stop moving;

[0019] (3) Approaching the dredging point: Open the pipe inlet gate of the pipe taking-over system and close the lateral pipe outlet gate; the pipe rotator of the dredging transport device taking-over system operates to screw and connect the dredging pipe placed in the pipe groove at this time with the end dredging pipe of the passage excavation device; the axial pipe conveyor of the dredging transport device taking-over system continues to operate to sequentially convey the multiple dredging pipes that subsequently slide from the pipe storage box into the pipe groove; at the same time, the passage excavation device moves forward and repeats the aforementioned pipe conveying action until the second upward direction rangefinder of the passage excavation device approaches, and the passage excavation device stops moving;

[0020] (4) Channel excavation: The excavation drill bit of the channel excavation device starts to rotate, and the spiral inner tube of the middle dredging pipe rotates together with the drill bit. The purge pump of the purge system of the dredging pipe transportation device is started, and the channel 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 spiral inner tube of the end dredging pipe and the spiral inner tube of the middle dredging pipe, and the material is sprayed to a farther distance by the water flow of the purge pump. During the channel excavation process, the steps of pipe connection and pipe transportation are repeated to ensure that the channel excavation device continues to move forward and the excavated solid material is continuously transported backward, and the excavation continues until a smooth channel is formed in the blocked section.

[0021] (5) Channel expansion: The excavation drill bit of the channel excavation device stops rotating, and the pipeline system starts to transport water. The water flows through the spiral inner tube channel from the tail end of the dredging and transportation device to the excavation drill bit, and then sprays out through the water outlet of the excavation drill bit. The high-speed water flow carries away the solid particles around the drill bit, expanding the channel hole. If necessary, the excavation drill bit can be started again to cooperate with the water flow to expand the channel;

[0022] After the water flow stabilizes, close the pipe inlet gate of the takeover system, open the lateral pipe outlet gate, start the horizontal conveying device and the vertical conveying device of the dredging pipe recovery system; the passage excavation device slowly withdraws along the original route, and the drill bit sprays water to gradually expand the passage; at the same time, the axial pipe conveyor of the takeover system rotates in the opposite direction to return the dredging pipe to the pipe groove of the takeover system; the dredging pipe is returned to the pipe storage vehicle of the dredging transport device by the pallet through the horizontal conveying device and the vertical conveying device; the passage excavation device continues to withdraw until it returns to the dredging transport vehicle;

[0023] The flow rate of the original pipeline system is gradually increased, and the small-section passage is gradually expanded until the entire section of the blocked section is expanded;

[0024] (6) Device recovery: The dredging and transportation device and the passage excavation device return along the original route of the main pipeline and move into the pipe of the pressurized delivery device; close the isolation gate on the high-pressure side to isolate the buffer pipe from the main pipeline of the system; open the pressure relief valve. When the pressure gauge pressure drops to normal pressure, open the isolation gate on the low-pressure side, recover the dredging and transportation device and the passage excavation device, and close the isolation gate and pressure relief valve on the low-pressure side. Beneficial effects of the present invention:

[0025] (1) The slurry pipeline blockage dredging device and dredging method of the present invention dredges the blocked section, especially the hard blocked section, in the slurry pipeline system under pressure and in a closed manner. It avoids the pipeline excavation and pipe cutting methods used in the prior art, solves the material leakage and environmental pollution problems caused by them, and helps to shorten the processing cycle of pipe blockage accidents, simplify the processing process, and reduce the economic losses caused by accident processing and production impact.

[0026] (2) The slurry pipeline blockage dredging device and dredging method of the present invention continuously connects different numbers of dredging pipes between the dredging transport vehicle and the passage excavation device according to the length of the blocked section until a passage is formed in the blocked section. In the case where the length of the blocked section is unpredictable, the device has strong adaptability and ensures effective dredging of the blockage.

[0027] (3) The slurry pipeline blockage unclogging device and unclogging method of the present invention integrate the functions of passage excavation, material return, unclogging water flow expansion, etc., are highly flexible, easy to use and have strong unclogging performance, and can be widely used in slurry pipeline unclogging.

[0028] (4) The slurry pipeline blockage unblocking device and unblocking method of the present invention implements a small-section passage excavation at the top of the blocked section, and then gradually expands the hole with the help of water supply from the original system until the entire section of the blocked section is expanded, thereby minimizing the amount of unblocking excavation, extending the sustainable operation time, and improving the unblocking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a pressure delivery device according to a preferred embodiment of the present invention;

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

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

[0032] Figure 4 This is a structural schematic diagram of a preferred embodiment of the present invention in which a U-shaped groove is provided on a pipe storage box;

[0033] Figure 5 It is a cross-sectional view of the dredging pipe transportation device at position A of a preferred embodiment of the present invention;

[0034] Figure 6 It is a cross-sectional view of the dredging pipe transportation device at position B of a preferred embodiment of the present invention;

[0035] Figure 7 2 is a schematic diagram of the side view of the passage excavation device of a preferred embodiment of the present invention;

[0036] Figure 81 is a schematic diagram of the top view of the passage excavation device according to a preferred embodiment of the present invention (a structural diagram after horizontal sectioning);

[0037] Fig. 9 It is a schematic diagram of the operation process of a preferred embodiment of the present invention;

[0038] The reference numerals in the figure represent: 1-pressure delivery device, 2-dredge pipe, 3-dredge pipe transportation device, 4-channel excavation device, 101-low-pressure side isolation gate, 102-exhaust valve, 103-buffer pipe section, 104-pressure gauge, 105-pressure relief valve, 106-high-pressure side isolation gate, 201-outer casing, 202-spiral inner pipe, 203-active quick connector, 301-pipe storage box, 302-No. 1 upward direction distance meter, 303-pipe groove, 304-pipe inlet gate Door, 305—lateral outlet gate, 306—axial pipe conveyor, 307—pipe rotator, 308—duct groove, 309—lateral conveying device, 310—vertical conveying device, 311—support plate, 312—purge pump, 313—purge pipeline, 314—U-shaped groove, 401—drive vehicle, 402—excavation drill bit, 403—circumferential gear drive device, 404—terminal dredging pipe, 405—No. 2 upward direction distance meter, 406—water outlet hole, 407—circular bell mouth. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Embodiment 1:

[0041] Please refer to Figure 1 This embodiment provides a slurry pipeline blockage dredging device, which specifically includes a pressure delivery device 1, a dredging pipe 2, a dredging pipe transportation device 3 and a passage excavation device 4;

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

[0043] The buffer pipe section 103 is provided 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 Figure 2-Figure 3 There are multiple dredging pipes 2, which are stacked in the dredging pipe transport device 3; each dredging pipe 2 includes an outer sleeve 201 and a spiral inner pipe 202, the spiral inner pipe is inserted into the outer sleeve, the spiral inner pipe 202 and the outer sleeve 201 are gap-matched, the spiral inner pipe 202 can rotate in the outer sleeve 201, and axial limit brackets are arranged at both ends of the spiral inner pipe; the outer circumference of the outer sleeve 201 is provided with alternating tiny stripe-shaped protrusions to increase friction, and the two end pipe openings of the spiral inner pipe and the outer sleeve 201 are both provided with active quick connectors 203 such as threaded or snap-on structures; continuous spiral blades are arranged along the axial direction of the outer circumference of the spiral inner pipe 202, the interior of the spiral inner pipe 202 is hollow, and the two end pipe openings of the outer sleeve 201 can be set as complementary stepped bevel surfaces;

[0045] The dredging pipe transport device 3 is used to store, rotate, push and recover the dredging pipe 2, and can push out multiple dredging pipes 2 in sequence along the axial direction to be connected to the excavation drill bit 402 of the passage excavation device 4. In some preferred schemes,

[0046] Bullet-shaped protrusions may be provided on the surface of the excavation drill bit 402 to facilitate excavation.

[0047] As a preferred solution, the dredging pipe transportation device 3 includes a pipe storage vehicle for storing the dredging pipe 2, which has its own power and is controlled by the control system of the device; a pipe connection system for rotating and pushing the dredging pipe 2, a dredging pipe recovery system for recovering the dredging pipe 2, and a purge system for spraying blocked materials to a distant place; the pipe outlet at the lower end of the pipe storage vehicle is connected to the pipe inlet of the connecting pipe system, the axial pipe outlet of the connecting pipe system is connected to the passage excavation device 4 through the dredging pipe connection 2, the lateral pipe 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 pipe storage vehicle.

[0048] As a preferred solution, in order to accurately determine the movement position and state of the pipe storage vehicle, the pipe storage vehicle is provided with a pipe storage box 301 and an upward direction distance meter 302. The bottom two sides of the pipe storage box 301 are sloped structures, and grooves with the same diameter as the dredging pipe are opened along the bottom of the slope; the No. 1 upward direction distance meter 302 on the roof is logically associated with the vehicle drive.

[0049] Please refer to Figure 4-Figure 6 The pipe conveying system includes a pipe groove 303, a pipe inlet gate 304, a lateral pipe outlet gate 305, an axial pipe conveyor 306 and a pipe rotator 307; the pipe groove 303 is a rectangular parallelepiped groove body of the same length as the pipe storage vehicle, and the bottom of the pipe groove 303 is inclined toward the side of the dredging pipe recovery system. Under natural conditions, the dredging pipe inside the pipe groove 303 will roll toward the side of the dredging pipe recovery system. The upper part of the pipe groove is connected to the pipe inlet gate 304, and the side of the pipe groove is connected to the pipe outlet gate 305. Pipe rotators 307 are arranged at both ends of the pipe groove, and an axial pipe conveyor 306 is always arranged in the pipe groove.

[0050] The pipe rotator 307 includes a semicircular rack and a pipe pre-tightening clamp, which radially expands and contracts along the semicircular rack, and the semicircular rack is driven by a circumferential driving gear device to rotate axially; the axial pipe conveyor 306 includes a pair of controllably rotatable rotating shaft devices, one of which is arranged on a side wall of the pipe groove 303, and the other is arranged on the pipe outlet gate 305, and the lateral pipe outlet gate 305 can move with the gate; the rotating shaft device is provided with alternating tiny striped protrusions similar to those of the dredging pipe to increase friction.

[0051] The dredging pipe recovery system includes an L-shaped conduit groove 308 arranged on one side of the pipe groove 303, and a horizontal conveying device 309 arranged at the bottom of the conduit groove. The horizontal conveying device can be a belt conveying mechanism. In order to increase the friction force, alternating strip protrusions and a vertical conveying device 310 can be arranged on the surface; the vertical conveying device belt surface is provided with a support plate 311 with a one-way folding function, which is connected by an L-shaped support and a hosting wall through a one-way hinge; a U-shaped groove 314 is arranged on the side wall of the pipe storage box 301 for the support plate 311 to pass through when rotating at the top.

[0052] The purge system includes a purge pump 312 and a purge pipeline 313. The purge pipeline inlet is arranged at the upper front end of the pipe storage vehicle, and the purge pipeline outlet is arranged at the bottom of the rear end of the pipe groove 303. The purge pump 312 is arranged at the purge pipeline inlet.

[0053] Please refer to Figure 7-Figure 9 As a preferred solution, the passage excavation device includes a driving vehicle 401, an excavation drill bit 402 arranged at the front end of the driving vehicle, a circumferential gear driving device 403, a terminal dredging pipe 404 and an upward distance meter 405; the terminal dredging pipe 404 is fixed on the driving vehicle, the main structure of the terminal dredging pipe 404 is the same as other dredging pipes, the excavation rotary head 402 is fixedly connected to the front end of the spiral inner pipe of the terminal dredging pipe 404, and the circumferential driving gear device 403 drives the spiral inner pipe and the excavation rotary head in the terminal dredging pipe to rotate; the rear end of the outer sleeve of the terminal dredging pipe 404 is provided with a movable type for connecting with other dredging pipes at the rear A quick connector, such as a stepped fit or a snap-on fit, wherein the front end of the outer sleeve of the terminal dredging pipe 404 extends forward and outward to form a circular bell mouth 407, and the front diameter of the circular bell mouth is larger than the circumferential diameter of the tail of the excavation rotor. Only when the circumferential diameter is large here can the particles drilled down by the excavation rotor enter the conveying channel between the spiral inner tube and the outer sleeve of the dredging pipe, otherwise they cannot enter smoothly; a plurality of water outlet holes 406 are equidistantly arranged on the same horizontal section of the conical surface of the excavation rotor, and a one-way outward-opening cover plate is provided on the holes, and the internal passages of the plurality of water outlet holes are gathered inside the rotor and connected to the spiral inner tube of the terminal dredging pipe 404.

[0054] Embodiment 2:

[0055] In order to improve the adaptability of the device to different slurries, the spiral inner tube 202 of the dredging pipe 2 is provided with a spiral blade with a variable pitch, for example, the blade is designed to be circumferentially rotatable around the vertical axis at its bottom, and the pitch of the spiral blade changes along the length direction of the spiral inner tube 202 to adapt to slurries of different densities and viscosities. For slurries with higher viscosity, a larger pitch can reduce the friction resistance between the spiral blade and the slurry, making it easier for the slurry to flow along the spiral blade. On the contrary, for slurries with lower viscosity, a smaller pitch can increase the contact area between the blade and the slurry and improve the conveying efficiency; thereby optimizing the material conveying efficiency during the dredging process.

[0056] At the same time, 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 spiral blade. The control system automatically adjusts the pitch of the spiral blade according to the data provided by the sensor and a preset algorithm to achieve adaptability to different slurry characteristics.

[0057] Embodiment 3:

[0058] An embodiment of the present invention further provides a method for unclogging a slurry pipeline blockage unclogging device, comprising the following steps:

[0059] (1) Device placement: The high-pressure side isolation gate 106, low-pressure side isolation gate 101, exhaust valve 102, and pressure relief valve 105 on the pressurized placement device are normally in a normally closed state. When clearing begins, open the pressure relief valve 105 to release the pressure in the pressurized placement device 1. After the pressure drops to normal pressure, open the low-pressure side isolation gate 101 and place the dredging and transportation device 3 and the passage excavation device 4 into the buffer pipe 103. At this time, the dredging and transportation device 3 and the passage excavation device 4 are connected as a whole through the terminal dredging pipe 404. Close the low-pressure side isolation gate. Open the pressure relief valve 105, open the exhaust valve 102, and inject water into the buffer pipe through the pressure relief port on the pressure relief valve. When the exhaust valve discharges water, close the exhaust valve and continue to inject water through the pressure relief port. When the pressure on the pressure gauge is the same as the pressure of the system main line, 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 system main line, and the dredging transportation device 3 and the passage excavation device 4 drive into the system main line. At this time, the liquid in the pipeline is in a static state, and the dredging vehicle is equivalent to walking in the static liquid without much resistance;

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

[0061] (3) Approaching the dredging point: Open the pipe inlet gate 304 of the pipe taking-over system, and close the lateral pipe outlet gate 305; the pipe rotator 307 of the dredging transport device taking-over system operates to screw and connect the dredging pipe 2 placed in the pipe groove 303 at this time with the terminal dredging pipe 404 of the passage excavation device; the axial pipe conveyor 306 of the dredging transport device 3 taking-over system continues to operate to sequentially convey the multiple dredging pipes 2 that subsequently slide from the pipe storage box 301 into the pipe groove 303 forward; at the same time, the passage excavation device 4 moves forward and repeats the aforementioned pipe conveying action until the second upward direction distance meter 405 of the passage excavation device 4 approaches 0, and the passage excavation device 4 stops moving;

[0062] (4) Channel excavation: The excavation drill bit 402 of the channel excavation device starts to rotate, and the spiral inner tube 202 of the middle dredging pipe 2 rotates simultaneously with the drill bit, and the purge pump of the purge system of the dredging pipe transportation device is started, and the channel 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 through the spiral blades on the spiral inner tube of the terminal dredging pipe 404 and the spiral inner tube of the middle dredging pipe 2, and the material is sprayed to a farther distance by the water flow of the purge pump 312; during the channel excavation process, the pipe connection and pipe transportation actions of step 3 are repeated to ensure that the channel excavation device continues to move forward and the excavated solid material is continuously transported backward, and the excavation continues until a smooth channel is formed in the blocked section;

[0063] As a preferred solution, overload protection sensors can also be integrated into key components of the dredging pipe transport device 3, such as the axial pipe transporter 306, the pipe rotator 307 and the purge system 312. When the system detects a force or torque exceeding the designed 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, and the pipeline system starts to deliver water. The water flows through the spiral inner tube passage from the tail end of the dredging and transportation device to the excavation drill bit, and then is ejected 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 the passage hole is enlarged. If necessary, the excavation drill bit can be started again to cooperate with the water flow to expand the passage;

[0065] After the water flow stabilizes, the pipe inlet gate 304 of the pipe receiving system is closed, the lateral pipe outlet gate 305 is opened, and the horizontal conveying device 309 and the vertical conveying device 310 of the dredging pipe recovery system are started; the passage excavation device 305 slowly withdraws along the original route, and the drill bit sprays water to gradually expand the passage; at the same time, the axial pipe conveyor 306 of the pipe receiving system rotates in the opposite direction to return the dredging pipe to the pipe groove 303 of the pipe receiving system; the dredging pipe is returned to the pipe storage vehicle of the dredging transport device by the pallet 311 through the horizontal conveying device and the vertical conveying device; the passage excavation device 4 continues to withdraw until it returns to the dredging transport vehicle;

[0066] The flow rate of the original pipeline system is gradually increased, and the small-section passage is gradually expanded until the entire section of the blocked section is expanded;

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

[0068] It will be easily understood by those skilled in the art that the above description is only 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 in the protection scope of the present invention.

Claims

1. A slurry pipeline blockage dredging device, characterized in that: It comprises a pressure delivery device (1), a dredging pipe (2), a dredging pipe transportation device (3) and a passage excavation device (4); The pressurized delivery device (1) comprises a buffer pipe section (103) of a tubular hollow structure having the same diameter as the main pipe diameter of the system; a pressure adjustment device is provided on the buffer pipe section (103); low-pressure side isolation gates (101) and high-pressure side isolation gates (106) are provided on both sides of the buffer pipe section (103); the outlet end on one side of the high-pressure side isolation gate (106) of the pressurized delivery device (1) is connected to the main pipe of the slurry pipeline transportation system; There are a plurality of dredging pipes (2) which are stacked in the dredging pipe transport device (3); each dredging pipe (2) comprises an outer sleeve (201) and a spiral inner pipe (202); the spiral inner pipe is inserted into the outer sleeve; the spiral inner pipe (202) can rotate in the outer sleeve (201); axial limit brackets are arranged at both ends of the spiral inner pipe; the outer circumference of the outer sleeve (201) is provided with alternate tiny stripe-shaped protrusions; both end pipe openings of the spiral inner pipe and the outer sleeve (201) are provided with movable quick connectors (203); continuous spiral blades are arranged along the axial direction on the outer circumference of the spiral inner pipe (202); the interior of the spiral inner pipe (202) is hollow; The dredging pipe transport device (3) is used for storing, rotating, pushing and recovering the dredging pipes (2), and can push out a plurality of dredging pipes (2) in sequence along the axial direction to be connected to the excavation drill bit (402) of the passage excavation device (4).

2. A slurry pipeline blockage dredging device according to claim 1, characterized in that: The pressure regulating device comprises an exhaust valve (102), a pressure gauge (104) and a pressure relief valve (105) which are arranged on the buffer pipe section (103).

3. The device for clearing blocked slurry pipes according to claim 1, characterized in that: The dredging pipe transport device (3) comprises a pipe storage vehicle for storing the dredging pipe (2), a pipe connection 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 blocked materials to a distant place; the pipe outlet at the lower end of the pipe storage vehicle is connected to the pipe inlet of the pipe connection system, the axial pipe outlet of the pipe connection system is connected to the passage excavation device (4) through the dredging pipe (2), the lateral pipe 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 pipe storage vehicle.

4. A slurry pipeline blockage dredging device according to claim 3, characterized in that: The pipe storage vehicle is provided with a pipe storage box (301) and an upward distance meter (302). The bottom of the pipe storage box (301) has two sides with a slope structure, and a slot hole with a diameter equal to that of the dredging pipe is provided along the bottom of the slope. The No. 1 upward distance meter (302) on the roof is logically associated with the vehicle driving.

5. The device for clearing blocked slurry pipelines according to claim 3, characterized in that: The pipe connection and pipe transportation system comprises a pipe trough (303), a pipe inlet gate (304), a lateral pipe outlet gate (305), an axial pipe conveyor (306) and a pipe rotator (307); the pipe trough (303) is a rectangular parallelepiped trough body of the same length as the pipe storage vehicle, the bottom of the pipe trough (303) is inclined toward one side of the dredging pipe recovery system, the upper part of the pipe trough is connected to the pipe inlet gate (304), the side of the pipe trough is connected to the pipe outlet gate (305), the pipe rotators (307) are arranged at both ends of the pipe trough, and the axial pipe conveyor (306) is always arranged in the pipe trough.

6. The device for clearing blocked slurry pipelines according to claim 5, characterized in that: The pipe rotator (307) includes a semicircular rack and a pipe pre-tightening clamp, the pipe pre-tightening clamp is radially extended and retracted along the semicircular rack, the semicircular rack is driven by a circumferential driving gear device to rotate axially and can drive the dredging pipe to rotate; the axial pipe conveyor (306) includes a pair of controllably rotatable rotating shaft devices, one of which is arranged on a side wall of one side of the pipe groove (303), and the other is arranged on the pipe outlet gate (305), and the lateral pipe outlet gate (305) can move with the gate; the rotating shaft device is provided with alternating tiny stripe-shaped protrusions that are the same as the dredging pipe.

7. The device for clearing blocked slurry pipelines according to claim 3, characterized in that: The dredging pipe recovery system comprises an L-shaped conduit groove (308) arranged on one side of the conduit groove (303), a horizontal conveying device (309) and a vertical conveying device (310) arranged at the bottom of the conduit groove; the vertical conveying device is provided with a support plate (311) spaced apart on the belt surface; and a U-shaped groove (314) is provided on the side wall of the pipe storage box (301) to facilitate the support plate (311) to pass through when rotating at the top.

8. The device for clearing blocked slurry pipelines according to claim 3, characterized in that: The purge system comprises a purge pump (312) and a purge pipeline (313); the purge pipeline inlet is arranged at the upper front end of the pipe storage vehicle, and the purge pipeline outlet is arranged at the bottom of the rear end of the pipe tank (303); the purge pump (312) is arranged at the purge pipeline inlet.

9. A slurry pipeline blockage dredging device according to any one of claims 1 to 8, characterized in that: The passage excavation device comprises a driving vehicle (401), an excavation drill bit (402) arranged at the front end of the driving vehicle, a circumferential gear driving device (403), a terminal dredging pipe (404) and an upward distance meter (405); the terminal dredging pipe (404) is fixed on the driving vehicle, the main structure of the terminal dredging pipe (404) is the same as that of other dredging pipes, the excavation rotary head (402) is fixedly connected to the front end of the spiral inner pipe of the terminal dredging pipe (404), and the circumferential driving gear device (403) drives the spiral inner pipe in the terminal dredging pipe and the excavation rotary head to rotate. The head rotates; the rear end of the outer sleeve of the terminal dredging pipe (404) is provided with a movable quick connector for connecting with other dredging pipes at the rear, and the front end of the outer sleeve of the terminal dredging pipe (404) extends forward and outward to form a circular bell mouth (407), and the front diameter of the circular bell mouth is larger than the circumferential diameter of the tail of the excavation rotary head; a plurality of water outlet holes (406) are arranged equidistantly on the same horizontal section of the conical surface of the excavation rotary head, and a one-way outward opening cover is provided on the holes, and the internal passages of the plurality of water outlet holes are connected to the spiral inner tube of the terminal dredging pipe (404) after being collected inside the rotary head.

10. A method for unclogging a slurry pipeline blockage unclogging device, characterized in that , including the following steps: (1) Device placement: The high-pressure side isolation gate (106), the low-pressure side isolation gate (101), the exhaust valve (102), and the pressure relief valve (105) on the pressurized placement device are normally in a normally closed state; when clearing begins, the pressure relief valve (105) is opened to release the pressure in the pressurized placement device (1). After the pressure drops to normal pressure, the low-pressure side isolation gate (101) is opened to place the dredging and transporting device (3) and the passage excavation device (4) into the buffer pipe (103). At this time, the dredging and transporting device (3) and the passage excavation device (4) are closed. The two pipes are connected as a whole through the terminal dredging pipe (404); the low-pressure side isolation gate is closed, the pressure relief valve (105) is opened, the exhaust valve (102) is opened, water is injected into the buffer pipe through the pressure relief port on the pressure relief valve, the exhaust valve is closed when water flows out of the exhaust valve, and water is continuously injected through the pressure relief port until the pressure of the pressure gauge is the same as the pressure of the system main pipe, and the water injection is stopped, and the pressure relief valve is closed; the high-pressure side isolation gate (106) is slowly opened to connect the buffer pipe with the system main pipe, and the dredging transportation device (3) and the passage excavation device (4) are driven into the system main pipe; (2) Initial arrival at the blockage point: the dredging and transporting device (3) and the passage excavation device (4) move along the main pipeline, and the solid materials at the blockage point are distributed in a slope along the bottom of the pipeline; as the dredging and transporting device and the passage excavation device move toward the blockage point, the distance between the top of the device and the top of the pipeline gradually approaches; when the distance meter of the dredging and transporting device in the upward direction approaches 0, the dredging and transporting device and the passage excavation device stop moving; (3) Approaching the dredging point: opening the pipe inlet gate (304) of the pipe taking-over system and closing the lateral pipe outlet gate (305); the pipe rotator (307) in the dredging transport device taking-over system operates to screw the dredging pipe (2) placed in the pipe groove (303) and the terminal dredging pipe (404) of the passage excavation device tightly; the axial pipe conveyor (306) of the dredging transport device (3) taking-over system continues to operate to sequentially convey the multiple dredging pipes (2) that subsequently slide from the pipe storage box (301) to the pipe groove (303) forward; at the same time, the passage excavation device (4) moves forward and repeats the aforementioned pipe conveying action until the second upward direction distance meter (405) of the passage excavation device (4) approaches 0, and the passage excavation device (4) stops moving; (4) Channel excavation: the excavation drill bit (402) of the channel excavation device starts to rotate, the spiral inner tube (202) of the middle dredging pipe (2) rotates simultaneously with the drill bit, the purge pump of the purge system of the dredging pipe transportation device is started, and the channel excavation device moves forward; after the excavated solid material passes through the excavation drill bit, it is pushed to the rear end of the dredging transportation device by the spiral blades on the spiral inner tube of the terminal dredging pipe (404) and the spiral inner tube of the middle dredging pipe (2), and the material is sprayed to a farther distance by the water flow of the purge pump (312); during the channel excavation process, the pipe connection and pipe transporting actions of step (3) are repeated to ensure that the channel excavation device continues to move forward and the excavated solid material continues to be transported backward, and the excavation continues until a smooth channel is formed in the blocked section; (5) Enlarging the passage: the excavation drill bit of the passage excavation device (4) stops rotating, and the pipeline system starts to transport water. The water flows through the spiral inner pipe passage from the tail end of the dredging and transportation 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 the passage hole is enlarged. If necessary, the excavation drill bit can be started again to cooperate with the water flow to expand the passage; After the water flow stabilizes, the pipe inlet gate (304) of the pipe receiving system is closed, the lateral pipe outlet gate (305) is opened, and the horizontal conveying device (309) and the vertical conveying device (310) of the dredging pipe recovery system are started; the passage excavation device (305) is slowly withdrawn along the original path, and the drill bit sprays water to gradually expand the passage; at the same time, the axial pipe conveyor (306) of the pipe receiving system rotates in the opposite direction to return the dredging pipe to the pipe groove (303) of the pipe receiving system; the dredging pipe is returned to the pipe storage vehicle of the dredging transport device by the support plate (311) through the horizontal conveying device and the vertical conveying device; the passage excavation device (4) is continuously withdrawn until it returns to the dredging transport vehicle; The flow rate of the original pipeline system is gradually increased, and the small-section passage is gradually expanded until the entire section of the blocked section is expanded; (6) Device recovery: The dredging and transporting device (3) and the passage excavation device (4) return along the original route of the main pipeline and move into the pipe of the pressurized delivery device (1); close the high-pressure side isolation gate (106) to isolate the buffer pipe from the system main pipeline; 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 transporting device and the passage excavation device, and close the low-pressure side isolation gate (101) and the pressure relief valve (105).

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