Pipeline blockage removing device and positive pressure conveying system

Abstract

The utility model relates to the technical field of pipeline blockage removal, and discloses a pipeline blockage removal device and a positive pressure conveying system.The pipeline blockage removal device comprises a material conveying pipe, an air purging assembly is arranged on the inner side of the surface of an elbow of the material conveying pipe, and a mechanical dredging assembly is arranged on the outer side of the surface of the elbow of the material conveying pipe; a plurality of groups of pressure sensors are fixedly mounted on the material conveying pipe; the air purging assembly comprises an air supply branch pipe, a purging pipe and a branch pipe; the mechanical dredging assembly comprises a limiting sleeve, a rotating shaft rod and a driving motor. When blockage occurs, the PLC control cabinet sends a signal to the diverter valve, the fan feeds compressed air into the purging pipe and the branch pipe through the air supply branch pipe to purge and dredge the elbow of the material conveying pipe, and when the elbow of the material conveying pipe is seriously blocked, the rotating shaft lever is pushed into a cavity of the material conveying pipe by arranging the mechanical dredging assembly and the oil cylinder, so that the elbow of the material conveying pipe is dredged. The driving motor rotates to drive the rotating shaft rod and the multiple sets of blade units to rotate for mechanical dredging.

Description

Technical Field

[0001] This utility model relates to the field of pipeline unblocking technology, and in particular to a pipeline unblocking device and a positive pressure conveying system. Background Technology

[0002] For conveying powdery materials that have very high fluidity, high specific gravity, or are prone to clogging, previous positive pressure conveying systems often resulted in material settling, scaling, and clogging within the pipes.

[0003] For example, utility model application CN202420253952.3 discloses a positive pressure conveying system with a pipeline unblocking device, including a feeding device and at least one receiving device connected to the feeding device. The feeding pipeline between the feeding device and the receiving device is provided with a pipeline unblocking device. The pipeline unblocking device includes a pressure sensor and a material flow detection device arranged in sequence. The receiving device is connected to a blower through the unblocking pipeline.

[0004] Existing technology uses a blower to generate negative pressure on blocked pipes, which can clear blockages in any section of the pipe. The disadvantages of this method are: it is suitable for mild or moderate blockages, but the negative pressure is insufficient to completely suck up ash when there is a severe blockage; and the negative pressure decays quickly in vertical pipes or long-distance transportation, requiring additional pressurization equipment.

[0005] Therefore, those skilled in the art have provided a pipeline unblocking device and a positive pressure delivery system to solve the problems mentioned in the background art. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a pipeline unblocking device and a positive pressure conveying system, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A pipe unblocking device includes a material conveying pipe. An air purging assembly is installed on the inner side of the elbow surface of the material conveying pipe, and a mechanical unblocking assembly is installed on the outer side of the elbow surface. Multiple pressure sensors are fixedly installed on the material conveying pipe, located on both sides of the elbow. The air purging assembly includes an air supply branch pipe, a purging pipe, and branch pipes. A solenoid valve is installed between the air supply branch pipe and the purging pipe. Multiple branch pipes are provided, one end of which is fixedly inserted through the inner side of the elbow of the material conveying pipe, and the branch pipes are evenly spaced. The mechanical unblocking assembly includes a limiting sleeve, a rotating shaft, and a drive motor. The rotating shaft movably passes through the limiting sleeve, which is fixedly installed on the outer side of the elbow surface. The drive motor drives the rotating shaft to rotate. Multiple blade units are installed inside the rotating shaft, each blade unit including a retractable cutter head that movably passes through the rotating shaft. A hydraulic cylinder for moving the rotating shaft is also provided on one side of the rotating shaft.

[0009] According to the pipeline unblocking device, the purging pipe is connected to multiple sets of branch pipes, and a nozzle is fixedly installed at one end of each set of branch pipes in the material conveying pipe cavity. The multiple sets of branch pipes are in an inclined state, and the direction of the airflow ejected from the branch pipes is opposite to the direction of material conveying in the material conveying pipe.

[0010] According to the aforementioned pipe unblocking device, the rotating shaft can movably pass through the bend of the material conveying pipe, and sealing rubber rings are provided at the junctions of the rotating shaft, the material conveying pipe, and the limiting sleeve.

[0011] According to the pipe unblocking device, a hollow bracket is also movably engaged inside the cavity of the limiting sleeve. A drive motor is installed inside the cavity of the hollow bracket. The output shaft of the drive motor movably passes through the hollow bracket and is fixedly connected to one end of the rotating shaft. The telescopic end of the oil cylinder is fixedly connected to the hollow bracket. The oil cylinder pushes the hollow bracket to move inside the cavity of the limiting sleeve.

[0012] According to the aforementioned pipe unblocking device, the end of the rotating shaft near the material conveying pipe is tapered, a rectangular cavity is provided at the central axis of the rotating shaft, and equally spaced through openings are provided on the outer wall of the rotating shaft, with the through openings communicating with the rectangular cavity.

[0013] According to the pipe unblocking device, the cutter head has a triangular cross-section and consists of two sets of cutters. The two sets of cutters move through the corresponding through-holes. A movable plate is fixedly installed on one side of each set of cutters. The two sets of movable plates are centrally symmetrical. The blade unit also includes two sets of limiting rods fixedly installed in a rectangular cavity. The limiting rods move through the corresponding movable plates. A compression spring is sleeved on the outer wall of each limiting rod. The compression spring is located at the end away from the corresponding cutter head.

[0014] A positive pressure conveying system includes a material silo, a hopper, a blower, and the aforementioned pipe unblocking device. The material silo is installed on the ground via a support column. A support frame is also fixedly installed on one side of the hydraulic cylinder. The support frame is installed on the ground. The hopper is installed through the top of the material silo. The blower is installed on the ground. The blower's air supply pipe is connected to a diversion valve. An air supply pipe is provided between the diversion valve and the material silo. The material conveying pipe is connected to the bottom of the blower.

[0015] This utility model provides a pipe unblocking device and a positive pressure conveying system, which has the following beneficial effects:

[0016] (1) By setting up a positive pressure conveying system, the material in the material silo can be conveyed through the material conveying pipe. Blockage may occur at the bend of the material conveying pipe. By setting up a pressure sensor, the air pressure at both ends of the bend of the material conveying pipe can be detected. The PLC control can be used to determine whether there is a serious deviation. When a blockage occurs, the PLC control cabinet sends a signal to the diversion valve. The blower sends compressed gas through the air supply branch pipe into the purge pipe. The purge pipe is connected to multiple branch pipes to purge and clear the bend of the material conveying pipe. When a serious blockage occurs at the bend of the material conveying pipe, a mechanical clearing component is set up. The oil cylinder pushes the rotating shaft into the material conveying pipe cavity, and the drive motor rotates to drive the rotating shaft and multiple blade units to rotate, thus performing mechanical clearing. The reasonable structural design ensures the effective clearing of the device.

[0017] (2) By setting up a purge pipe that is connected to multiple sets of branch pipes, and fixing nozzles at one end of the multiple sets of branch pipes in the material conveying pipe cavity, the compressed gas in the purge pipe cavity is purged through the branch pipes one by one to purge the material conveying pipe elbow cavity. By setting the direction of the airflow from the branch pipe to be opposite to the direction of material conveying in the material conveying pipe, the unblocking effect is improved.

[0018] (3) By setting a hollow bracket that can be movably locked in the limiting sleeve cavity, when the oil cylinder works, it pushes the hollow bracket to move, and the hollow bracket pushes the rotating shaft to move. When the rotating shaft is fully pushed into the material conveying pipe cavity, the compression spring pushes the moving plate to push, and the moving plate drives the cutter head to move through the corresponding through hole. During the rotation of the rotating shaft, the cutter head is simultaneously subjected to centrifugal force, and the cutter head breaks up the blockage, thus mechanically clearing the blockage in the material conveying pipe. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of a pipe unblocking device and a positive pressure conveying system according to the present invention;

[0020] Figure 2 This is a rear-view three-dimensional structural diagram of a pipe unblocking device and a positive pressure conveying system according to the present invention;

[0021] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 4 This is a perspective view of the mechanical unblocking component of a pipe unblocking device and positive pressure conveying system according to the present invention;

[0023] Figure 5 This is a perspective view of the rotating shaft of a pipe unblocking device and positive pressure conveying system according to the present invention.

[0024] Figure 6 This is a schematic diagram of the internal structure of the rectangular cavity of the rotating shaft of a pipeline unblocking device and positive pressure conveying system according to this utility model;

[0025] Figure 7 This is a three-dimensional structural diagram of the blade unit of a pipe unblocking device and positive pressure conveying system according to the present invention.

[0026] Legend:

[0027] 10. Material conveying pipe; 11. Material silo; 12. Hopper; 13. Blower; 14. Mechanical unblocking assembly; 15. Support frame; 16. Blowing pipe; 17. Pressure sensor; 18. Air supply branch pipe; 19. Solenoid valve; 20. Branch pipe; 21. Limiting sleeve; 22. Hollow bracket; 23. Hydraulic cylinder; 24. Drive motor; 25. Rotating shaft; 26. Through-hole; 27. Blade unit; 28. Blade head; 29. ​​Moving plate; 30. Limiting rod; 31. Compression spring. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Please see Figure 1-7As shown, this utility model is a pipe unblocking device, including a material conveying pipe 10. An air purging assembly is provided on the inner side of the elbow surface of the material conveying pipe 10, and a mechanical unblocking assembly 14 is provided on the outer side of the elbow surface of the material conveying pipe 10. Multiple pressure sensors 17 are fixedly installed on the material conveying pipe 10, and the pressure sensors 17 are located on both sides of the elbow of the material conveying pipe 10. The air purging assembly includes an air supply branch pipe 18, a purging pipe 16, and branch pipes 20. A solenoid valve 19 is provided between the air supply branch pipe 18 and the purging pipe 16. There are multiple sets of branch pipes 20, and one end of each set of branch pipes 20 is fixedly inserted through the material conveying pipe. The inner side of the bend of pipe 10, and multiple sets of branch pipes 20 are distributed at equal intervals; the mechanical unblocking component 14 includes a limiting sleeve 21, a rotating shaft 25 and a drive motor 24. The rotating shaft 25 movably passes through the limiting sleeve 21. The limiting sleeve 21 is fixedly installed on the outer side of the bend surface of the material conveying pipe 10. The drive motor 24 drives the rotating shaft 25 to rotate. Multiple sets of blade units 27 are provided in the cavity of the rotating shaft 25. The blade unit 27 includes a retractable cutter head 28. The cutter head 28 can movably pass through the rotating shaft 25. A hydraulic cylinder 23 for pushing the rotating shaft 25 to move is also provided on one side of the rotating shaft 25.

[0030] A positive pressure conveying system includes a material silo 11, a hopper 12, a blower 13, and the aforementioned pipe unblocking device. The material silo 11 is installed on the ground via a support column. A support frame 15 is also fixedly installed on one side of the hydraulic cylinder 23. The support frame 15 is installed on the ground. The hopper 12 is installed through the top of the material silo 11. The blower 13 is installed on the ground. The air supply pipe of the blower 13 is connected to a diversion valve. An air supply pipe is provided between the diversion valve and the material silo 11. The material conveying pipe 10 is connected to the bottom of the blower 13.

[0031] Specifically, by setting up a positive pressure conveying system, the material in the material silo 11 can be conveyed through the material conveying pipe 10. Blockage may occur at the bend of the material conveying pipe 10. By setting up a pressure sensor 17, the air pressure at both ends of the bend of the material conveying pipe 10 can be detected. The PLC control is used to determine whether there is a serious deviation. When a blockage occurs, the PLC control cabinet sends a signal to the diversion valve, and the blower 13 sends compressed gas through the air supply branch pipe 18 into the purge pipe 16. The purge pipe 16 is connected to multiple sets of branch pipes 20 to purge and clear the bend of the material conveying pipe 10. When a serious blockage occurs at the bend of the material conveying pipe 10, a mechanical clearing component 14 is set up. The hydraulic cylinder 23 pushes the rotating shaft 25 into the material conveying pipe 10, and the drive motor 24 rotates to drive the rotating shaft 25 and multiple sets of blade units 27 to rotate, thus performing mechanical clearing. The reasonable structural design ensures the effective clearing of the device.

[0032] It should be noted that a PLC control cabinet is installed on one side of the fan 13. The working status of the fan 13, pressure sensor 17, solenoid valve 19 and drive motor 24 are all controlled by the PLC control cabinet. The PLC control cabinet is existing technology known to those skilled in the art and will not be described in detail here.

[0033] Among them, such as Figure 1-3 As shown, the purge pipe 16 is connected to multiple branch pipes 20. Each branch pipe 20 has a nozzle fixedly installed at one end within the material conveying pipe 10 cavity. The branch pipes 20 are inclined, and the direction of the airflow from the branch pipes 20 is opposite to the direction of material conveying within the material conveying pipe 10. A rotating shaft 25 can movably pass through the bend of the material conveying pipe 10. Sealing rubber rings are provided at the junctions of the rotating shaft 25, the material conveying pipe 10, and the limiting sleeve 21.

[0034] Specifically, by setting the purge pipe 16 to be connected to multiple sets of branch pipes 20, and fixing nozzles at one end of the multiple sets of branch pipes 20 inside the cavity of the material conveying pipe 10, the compressed gas in the cavity of the purge pipe 16 passes through the branch pipes 20 one by one to purge the elbow cavity of the material conveying pipe 10. By setting the direction of the airflow sprayed out of the branch pipes 20 to be opposite to the direction of material conveying in the material conveying pipe 10, the unblocking effect is improved.

[0035] The rotating shaft 25 can be movably inserted through the bend of the material conveying pipe 10. Sealing rubber rings are provided at the junctions of the rotating shaft 25, the material conveying pipe 10, and the limiting sleeve 21 to ensure the sealing of the device. During normal material conveying, air will not leak out through the gap between the rotating shaft 25, the material conveying pipe 10, and the limiting sleeve 21.

[0036] Among them, such as Figure 4 As shown, a hollow bracket 22 is also movably engaged inside the cavity of the limiting sleeve 21. The drive motor 24 is installed inside the cavity of the hollow bracket 22. The output shaft of the drive motor 24 movably passes through the hollow bracket 22 and is fixedly connected to one end of the rotating shaft 25. The telescopic end of the hydraulic cylinder 23 is fixedly connected to the hollow bracket 22. The hydraulic cylinder 23 pushes the hollow bracket 22 to move inside the cavity of the limiting sleeve 21.

[0037] Specifically, by setting a hollow bracket 22 that can be movably engaged in the cavity of the limiting sleeve 21, when the hydraulic cylinder 23 is working, it pushes the hollow bracket 22 to move, and the hollow bracket 22 pushes the rotating shaft 25 to move, inserting the rotating shaft 25 into the blocked material. The drive motor 24 drives the rotating shaft 25 to rotate. During the rotation of the rotating shaft 25, the blade unit 27 effectively breaks up the stubborn blockage, thus achieving the purpose of clearing the material through mechanical means.

[0038] Among them, such as Figure 5As shown, the end of the rotating shaft 25 near the material conveying pipe 10 is tapered, and a rectangular cavity is provided at the central axis position of the rotating shaft 25. The outer wall of the rotating shaft 25 is provided with equally spaced through holes 26, which are connected to the rectangular cavity.

[0039] Specifically, the rotating shaft 25 is tapered at one end near the material conveying pipe 10 to facilitate insertion of the rotating shaft 25 into the blockage. A rectangular cavity is provided at the central axis of the rotating shaft 25, and equally spaced through holes 26 are provided on the outer wall of the rotating shaft 25. The through holes 26 communicate with the rectangular cavity, facilitating the movement of the cutter head 28 through the corresponding through holes 26.

[0040] Among them, such as Figure 6-7 As shown, the cross-section of the cutter head 28 is triangular. There are two sets of cutter heads 28, and the two sets of cutter heads 28 move through the corresponding through holes 26. A movable plate 29 is fixedly installed on one side of each of the two sets of cutter heads 28. The two sets of movable plates 29 are in a centrally symmetrical state. The blade unit 27 also includes two sets of limiting rods 30 fixedly installed in the rectangular cavity. The limiting rods 30 move through the corresponding movable plates 29. A compression spring 31 is sleeved on the outer wall of each limiting rod 30. The compression spring 31 is located at the end away from the corresponding cutter head 28.

[0041] Specifically, when the rotating shaft 25 is fully pushed into the cavity of the material conveying pipe 10, the compression spring 31 pushes the moving plate 29 with a thrust. The moving plate 29 drives the cutter head 28 to move through the corresponding through-hole 26. During the rotation of the rotating shaft 25, the cutter head 28 is simultaneously subjected to centrifugal force. The cutter head 28 breaks up the blockage and clears the blockage in the material conveying pipe 10 mechanically.

[0042] It should be noted that a hydraulic system device is provided on one side of the oil cylinder 23. The hydraulic system device controls the extension and retraction length of the oil cylinder 23. The hydraulic system device is existing technology known to those skilled in the art and will not be described in detail here.

[0043] The specific working principle of this utility model's pipe unblocking device and positive pressure conveying system is as follows: By setting up a positive pressure conveying system, the material in the material silo 11 can be conveyed through the material conveying pipe 10. Blockage may occur at the bend of the material conveying pipe 10. A pressure sensor 17 can detect the air pressure at both ends of the bend in the material conveying pipe 10. The PLC control system determines whether a serious deviation has occurred. When a blockage occurs, the PLC control cabinet sends a signal to the diversion valve, and the blower 13 sends compressed gas through the air supply branch pipe 18 into the purge pipe 16. The purge pipe 16 is connected to multiple branch pipes 20 to purge the material. The elbow of the material conveying pipe 10 is purged and cleared. When the elbow of the material conveying pipe 10 is severely blocked, the mechanical clearing component 14 is set up. The cylinder 23 pushes the rotating shaft 25 into the cavity of the material conveying pipe 10. When the rotating shaft 25 is fully pushed into the cavity of the material conveying pipe 10, the compression spring 31 pushes the moving plate 29 with thrust. The moving plate 29 drives the cutter head 28 to move through the corresponding through-hole 26. During the rotation of the rotating shaft 25, the cutter head 28 is simultaneously subjected to centrifugal force. The cutter head 28 breaks up the blockage and clears the blockage of the material conveying pipe 10 mechanically.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pipe unblocking device, characterized in that, include: Material conveying pipe (10), an air blowing assembly is provided on the inner side of the elbow surface of the material conveying pipe (10), and a mechanical unblocking assembly (14) is provided on the outer side of the elbow surface of the material conveying pipe (10). Multiple pressure sensors (17) are fixedly installed on the material conveying pipe (10), and the pressure sensors (17) are located on both sides of the bend of the material conveying pipe (10). The air purging assembly includes an air supply branch pipe (18), a purging pipe (16), and branch pipes (20). A solenoid valve (19) is provided between the air supply branch pipe (18) and the purging pipe (16). There are multiple sets of branch pipes (20). One end of each set of branch pipes (20) is fixedly inserted through the inside of the bend of the material conveying pipe (10), and the multiple sets of branch pipes (20) are distributed at equal intervals. The mechanical unblocking assembly (14) includes a limiting sleeve (21), a rotating shaft (25), and a drive motor (24). The rotating shaft (25) moves through the limiting sleeve (21). The limiting sleeve (21) is fixedly installed on the outer side of the elbow surface of the material conveying pipe (10). The drive motor (24) drives the rotating shaft (25) to rotate. Multiple sets of blade units (27) are provided in the cavity of the rotating shaft (25). The blade unit (27) includes a retractable cutter head (28). The cutter head (28) moves through the rotating shaft (25). A hydraulic cylinder (23) for pushing the rotating shaft (25) to move is also provided on one side of the rotating shaft (25).

2. The pipe unblocking device according to claim 1, characterized in that: The purge pipe (16) is connected to multiple sets of branch pipes (20). Each set of branch pipes (20) has a nozzle fixedly installed at one end inside the material conveying pipe (10). The multiple sets of branch pipes (20) are inclined, and the direction of the airflow ejected from the branch pipes (20) is opposite to the direction of material conveying inside the material conveying pipe (10).

3. The pipe unblocking device according to claim 1, characterized in that: The rotating shaft (25) can movably pass through the bend of the material conveying pipe (10), and sealing rubber rings are provided at the junctions of the rotating shaft (25), the material conveying pipe (10), and the limiting sleeve (21).

4. The pipe unblocking device according to claim 1, characterized in that: The cavity of the limiting sleeve (21) is also movably engaged with the hollow bracket (22). The drive motor (24) is installed in the cavity of the hollow bracket (22). The output shaft of the drive motor (24) movably passes through the hollow bracket (22) and is fixedly connected to one end of the rotating shaft (25). The telescopic end of the oil cylinder (23) is fixedly connected to the hollow bracket (22). The oil cylinder (23) pushes the hollow bracket (22) to move within the cavity of the limiting sleeve (21).

5. The pipe unblocking device according to claim 1, characterized in that: The rotating shaft (25) is tapered at one end near the material conveying pipe (10). A rectangular cavity is provided at the central axis of the rotating shaft (25). Through openings (26) are provided on the outer wall of the rotating shaft (25) at equal intervals, and the through openings (26) are connected to the rectangular cavity.

6. The pipe unblocking device according to claim 1, characterized in that: The cross-section of the cutter head (28) is triangular. There are two sets of cutter heads (28). The two sets of cutter heads (28) move through the corresponding through-holes (26). A movable plate (29) is fixedly installed on one side of each of the two sets of cutter heads (28). The two sets of movable plates (29) are in a centrally symmetrical state. The blade unit (27) also includes two sets of limiting rods (30) fixedly installed in the rectangular cavity. The limiting rods (30) move through the corresponding movable plates (29). The outer wall of the limiting rods (30) is fitted with compression springs (31). The compression springs (31) are located at the end away from the corresponding cutter head (28).

7. A positive pressure delivery system characterized by: It includes a material silo (11), a hopper (12), a blower (13), and a pipe unblocking device as described in any one of claims 1-6. The material silo (11) is installed on the ground by a support column. A support frame (15) is also fixedly installed on one side of the cylinder (23). The support frame (15) is installed on the ground. The hopper (12) is installed through the top of the material silo (11). The blower (13) is installed on the ground. The blower (13) air supply pipe is connected to a diversion valve. An air supply pipe is provided between the diversion valve and the material silo (11). The material conveying pipe (10) is connected to the bottom end of the blower (13).

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