Pipeline anti-blocking device for fly ash grouting

Abstract

The utility model relates to the technical field of fly ash grouting, and specifically discloses a pipeline anti-blocking device for fly ash grouting, which comprises a connecting pipe body, a branch pipe fixed to the side of the connecting pipe body, a driving telescopic rod arranged at one end of the branch pipe, a contraction rod of the driving telescopic rod extending into the branch pipe and fixed with a movable block, a disc arranged below the movable block, a water spraying mechanism arranged on the disc, and a buffer mechanism arranged between the disc and the movable block. The utility model is specially designed to be arranged at a key node, can correspond to the key node, realizes the operation of blowing and cleaning the blockage by high-pressure water flow, effectively reduces the cleaning time, and improves the work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fly ash grouting technology, and in particular to a pipe anti-clogging device for fly ash grouting. Background Technology

[0002] To address the fly ash waste from power plants, the fly ash generated by power plants is collected, transported, and treated through a system. Ultimately, it can be pumped into the overlying strata or delamination fissures of coal mine goafs via dedicated grouting pipelines. This allows for the use of fly ash to control goaf disasters and effectively reduce remediation costs.

[0003] In fly ash grouting processes, pipe blockage is a frequent problem. The blockage is essentially the result of the coupling effect of multiple factors, including the physical properties of fly ash (fine particle deposition and hydration cementitious properties) and transportation conditions (flow velocity fluctuations and sudden changes in pipe diameter). Engineering statistics show that both adhering and depositional blockages are concentrated in pipe bends, low-speed sections of straight pipes, and pipe valves. Current methods for handling blockages mainly involve flushing with high-pressure water, which takes 30–90 minutes. This is time-consuming and inefficient, primarily due to the lack of anti-blockage structures at critical points, severely limiting operational efficiency.

[0004] To address this issue, we propose a pipe anti-clogging device for fly ash grouting to solve the aforementioned problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a pipe anti-clogging device for fly ash grouting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pipe anti-clogging device for fly ash grouting includes a connecting pipe body, a branch pipe fixed to the side of the connecting pipe body, a drive telescopic rod at one end of the branch pipe, the retraction rod of the drive telescopic rod extending into the inside of the branch pipe and fixed with a movable block, a disc below the movable block, a water spraying mechanism on the disc, and a buffer mechanism between the disc and the movable block.

[0008] The radii of the movable block and the disk are the same as the inner diameter of the branch pipe, and the sides of the movable block and the disk can slide and fit against the inner wall of the branch pipe.

[0009] Preferably, the branch pipe is perpendicular to the connecting pipe body, and the inner diameter of the branch pipe is smaller than the inner diameter of the connecting pipe body.

[0010] Preferably, both ends of the connecting pipe can be connected to the fly ash grouting pipe, and the inner diameter of the fly ash grouting pipe is the same as the inner diameter of the connecting pipe.

[0011] Preferably, the drive telescopic rod is fixedly connected to the side of the connecting pipe body via a support frame.

[0012] Preferably, a cover plate is detachably fixed to one end of the branch pipe away from the connecting pipe body, and the contraction rod slides through the cover plate. A corrugated sleeve is coaxially provided at the bottom of the cover plate, and the corrugated sleeve is fitted on the contraction rod. The two ends of the corrugated sleeve are fixedly connected to the bottom of the cover plate and the side of the contraction rod, respectively.

[0013] Preferably, the water spraying mechanism includes a corrugated metal pipe, a nozzle is fixed on the upper side of the disc, and symmetrically arranged spray pipes are fixed on the side of the nozzle. The two ends of the corrugated metal pipe are fixedly connected to the nozzle and the bottom of the movable block, respectively. The corrugated metal pipe is connected to the nozzle. A channel is provided inside the retractable rod. The channel passes through the movable block and is connected to the corrugated metal pipe. A water inlet pipe connector connected to the channel is also fixed on the side of the retractable rod.

[0014] Preferably, the water inlet pipe joint is located outside the branch pipe and away from the end of the branch pipe. A drain pipe is also installed on the side of the branch pipe, and a valve is provided on the drain pipe. The drain pipe is connected to the inside of the branch pipe.

[0015] Preferably, the buffer mechanism includes a spring located between the disc and the movable block, and the spring is sleeved on a metal bellows. A base is fixed on the upper side of the disc, and the two ends of the spring are fixedly connected to the base and the bottom of the movable block, respectively.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention, by setting up a connecting pipe and a branch pipe, and by setting up a drive telescopic rod and a spray pipe, can achieve high-pressure water flow purging operation by setting it at key nodes, thereby achieving rapid flushing and unblocking effect, effectively reducing cleaning time and improving unblocking work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the first axonometric drawing of this utility model;

[0020] Figure 2 This is the second axonometric drawing of the present invention;

[0021] Figure 3 This is an exploded view of the present invention;

[0022] Figure 4This is a cross-sectional view of the connecting pipe body and the branch pipe of this utility model;

[0023] Figure 5 This is a cross-sectional view of the retraction rod, corrugated metal pipe, and nozzle of this utility model.

[0024] In the diagram: 1. Connecting pipe; 2. Branch pipe; 3. Drive telescopic rod; 4. Movable block; 5. Disc; 6. Fly ash grouting pipe; 7. Support frame; 8. Retractable rod; 9. Cover plate; 10. Corrugated sleeve; 11. Metal corrugated pipe; 12. Spray pipe; 13. Channel; 14. Spring; 15. Water inlet pipe joint; 16. Drainage pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Reference Figures 1-5 A pipe anti-clogging device for fly ash grouting includes a connecting pipe body 1, a branch pipe 2 fixed to the side of the connecting pipe body 1, a drive telescopic rod 3 at one end of the branch pipe 2, and a retractable rod 8 extending and retracting from the drive telescopic rod 3. The retractable rod 8 of the drive telescopic rod 3 extends into the interior of the branch pipe 2 and is fixed with a movable block 4. A disc 5 is located below the movable block 4, and a water spraying mechanism is provided on the disc 5. A buffer mechanism is provided between the disc 5 and the movable block 4. The drive telescopic rod 3 can control the corresponding retractable rod 8 to extend and retract, and the retractable rod 8 can drive the corresponding movable block 4 and disc 5 to move. The radii of the movable block 4 and the disc 5 are the same as the inner diameter of the branch pipe 2, and the sides of the movable block 4 and the disc 5 can slide and fit against the inner wall of the branch pipe 2. The retractable rod 8 can drive the corresponding movable block 4 and the disc 5 to move inside the branch pipe 2, and the sliding fit between the sides of the movable block 4 and the disc 5 and the inner wall of the branch pipe 2 ensures a sealing effect. Both the movable block 4 and the disc 5 can be fitted with rubber layers or rubber rings to ensure a sealing effect when they are in contact with the inner wall of the branch pipe 2.

[0028] Those skilled in the art should know that the drive telescopic rod 3 can be an electrically driven telescopic rod or a manually rotated telescopic rod, and the electrically driven telescopic rod can be controlled by a PLC.

[0029] As a technical optimization of this utility model, the branch pipe 2 is perpendicular to the connecting pipe body 1, and the inner diameter of the branch pipe 2 is smaller than the inner diameter of the connecting pipe body 1. The inner diameter of the connecting pipe body 1 can be set to 120mm, and the inner diameter of the branch pipe 2 can be set to 100mm. The length of the branch pipe 2 is greater than that of the connecting pipe body 1, with the length of the branch pipe 2 being 400mm and the length of the connecting pipe body 1 being 200mm.

[0030] As a technical optimization of this utility model, both ends of the connecting pipe body 1 can be connected to the fly ash grouting pipe 6. The inner diameter of the fly ash grouting pipe 6 is the same as the inner diameter of the connecting pipe body 1, that is, the inner diameter of the fly ash grouting pipe 6 and the inner diameter of the connecting pipe body 1 are both 120mm.

[0031] As a technical optimization of this utility model, the drive telescopic rod 3 is fixedly connected to the side of the connecting pipe body 1 through the support frame 7. The support frame 7 serves to stabilize and support the drive telescopic rod 3.

[0032] As a technical optimization of this utility model, a cover plate 9 is detachably fixed to one end of the branch pipe 2 away from the connecting pipe body 1, and the contraction rod 8 slides through the cover plate 9. A corrugated sleeve 10 is coaxially provided at the bottom of the cover plate 9, and the corrugated sleeve 10 is fitted onto the contraction rod 8. The two ends of the corrugated sleeve 10 are fixedly connected to the bottom of the cover plate 9 and the side of the contraction rod 8, respectively. The corrugated sleeve 10 is made of rubber or a rubber-like PC material. The corrugated sleeve 10 seals the sliding gap between the contraction rod 8 and the cover plate 9 without affecting the movement of the contraction rod 8.

[0033] As a technical optimization of this utility model, the water spraying mechanism includes a corrugated metal pipe 11, a nozzle fixed on the upper side of the disc 5, and symmetrically arranged spray pipes 12 fixed on the side of the nozzle. Both ends of the corrugated metal pipe 11 are fixedly connected to the nozzle and the bottom of the movable block 4, respectively. The corrugated metal pipe 11 connects the movable block 4 and the disc 5. The corrugated metal pipe 11 communicates with the nozzle. A channel 13 is provided inside the retractable rod 8, which passes through the movable block 4 and communicates with the corrugated metal pipe 11. A water inlet pipe connector 15, communicating with the channel 13, is also fixed on the side of the retractable rod 8. The water inlet pipe connector 15 is used to connect to an external water injection pipe, allowing pressurized water to be injected. The pressurized water flows through the channel 13 into the corrugated metal pipe 11, then through the corrugated metal pipe 11 into the two spray pipes 12, and is sprayed out under pressure from the spray pipes 12. The spray pipes 12 guide the water flow. The number and direction of the spray pipes 12 can be adjusted or set according to requirements.

[0034] As a technical optimization of this utility model, the water inlet pipe joint 15 is located outside the branch pipe 2 and away from the end of the branch pipe 2. A drain pipe 16 is also installed on the side of the branch pipe 2. The drain pipe 16 is equipped with a valve and is connected to the inside of the branch pipe 2. When the valve on the drain pipe 16 is opened, the drain pipe 16 can discharge the water inside the branch pipe 2.

[0035] As a technical optimization of this utility model, the buffer mechanism includes a spring 14, which is located between the disc 5 and the movable block 4, and is sleeved on the metal bellows 11. A base is fixed to the upper side of the disc 5, and both ends of the spring 14 are fixedly connected to the base and the bottom of the movable block 4, respectively. The spring 14 serves to connect the movable block 4 and the disc 5. The spring 14 has a contraction buffering effect, and the metal bellows 11 also has a contraction buffering effect.

[0036] In this invention, the working principle of the device is as follows:

[0037] In use, if a blockage occurs, the drive telescopic rod 3 can be activated, causing the movable block 4 and disc 5 to move downwards. This allows the nozzle 12 to extend into the connecting pipe body 1. At this time, the water inlet pipe connector 15 connects to the external water injection pipe, allowing water with a certain pressure (15-25 MPa) to be injected. The water flows through the channel 13 into the metal corrugated pipe 11, then through the metal corrugated pipe 11 into the two nozzles 12, and is ejected from the nozzles 12 under pressure. The nozzles 12 act as water flow guides. The high-pressure water jet ejected through the nozzles 12 can purge and clean the blockage. The connecting pipe body 1 is designed to be installed at critical points (critical points include pipe bends, low-speed sections of straight pipes, and pipe valves where blockages are concentrated). Specifically, it is installed on the side or near pipe bends, low-speed sections of straight pipes, and pipe valves where blockages are concentrated. This allows for high-pressure water jet purging at these critical points, achieving rapid flushing and clearing of blockages, effectively reducing cleaning time and improving work efficiency.

[0038] Meanwhile, after being installed on the fly ash grouting pipe 6, the combination of spring 14 and disc 5 can also play a role in preventing water hammer. That is, when water hammer occurs, spring 14 can be impacted and contracted, thus playing a buffering and protective role. Similarly, metal corrugated pipe 11 can also play a contraction and buffering role, thereby protecting the corresponding connection of fly ash grouting pipe 6. For example, when installed at elbow connection, it can protect elbow connection, reduce the impact of water hammer on elbow, and also perform unblocking operation on elbows that are prone to blockage.

[0039] This invention enables efficient unblocking operations and minimizes downtime losses by setting unblocking structures at key nodes. It is designed based on the specific needs of pipeline cleaning.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pipe anti-clogging device for fly ash grouting, comprising a connecting pipe body (1), characterized in that, A branch pipe (2) is fixed on the side of the connecting pipe (1). A drive telescopic rod (3) is provided at one end of the branch pipe (2). The retraction rod (8) of the drive telescopic rod (3) extends into the interior of the branch pipe (2) and is fixed with a movable block (4). A disc (5) is provided below the movable block (4). A water spraying mechanism is provided on the disc (5). A buffer mechanism is provided between the disc (5) and the movable block (4). The radii of the movable block (4) and the disc (5) are the same as the inner diameter of the branch pipe (2), and the sides of the movable block (4) and the disc (5) can slide and fit against the inner wall of the branch pipe (2).

2. The anti-clogging device for fly ash grouting pipelines according to claim 1, characterized in that, The branch pipe (2) is perpendicular to the connecting pipe (1), and the inner diameter of the branch pipe (2) is smaller than the inner diameter of the connecting pipe (1).

3. The anti-clogging device for fly ash grouting pipelines according to claim 1, characterized in that, Both ends of the connecting pipe (1) can be connected to the fly ash grouting pipe (6), and the inner diameter of the fly ash grouting pipe (6) is the same as the inner diameter of the connecting pipe (1).

4. The anti-clogging device for fly ash grouting pipelines according to claim 1, characterized in that, The drive telescopic rod (3) is fixedly connected to the side of the connecting pipe (1) via the support frame (7).

5. The anti-clogging device for fly ash grouting pipelines according to claim 1, characterized in that, The branch pipe (2) is detachably fixed with a cover plate (9) at one end away from the connecting pipe body (1), and the shrink rod (8) slides through the cover plate (9). A corrugated sleeve (10) is provided coaxially at the bottom of the cover plate (9). The corrugated sleeve (10) is sleeved on the shrink rod (8), and the two ends of the corrugated sleeve (10) are fixedly connected to the bottom of the cover plate (9) and the side of the shrink rod (8) respectively.

6. The anti-clogging device for fly ash grouting pipelines according to claim 1, characterized in that, The water spraying mechanism includes a metal corrugated pipe (11), a nozzle is fixed on the upper side of the disc (5), and symmetrically arranged spray pipes (12) are fixed on the side of the nozzle. The two ends of the metal corrugated pipe (11) are fixedly connected to the nozzle and the bottom of the movable block (4), respectively. The metal corrugated pipe (11) is connected to the nozzle. A channel (13) is provided inside the retractable rod (8). The channel (13) passes through the movable block (4) and is connected to the metal corrugated pipe (11). A water inlet pipe connector (15) connected to the channel (13) is also fixed on the side of the retractable rod (8).

7. The anti-clogging device for fly ash grouting pipelines according to claim 6, characterized in that, The water inlet pipe joint (15) is located outside the branch pipe (2) and away from the end of the branch pipe (2). A drain pipe (16) is also installed on the side of the branch pipe (2). A valve is provided on the drain pipe (16), and the drain pipe (16) is connected to the inside of the branch pipe (2).

8. The anti-clogging device for fly ash grouting pipelines according to claim 7, characterized in that, The buffer mechanism includes a spring (14), which is located between the disc (5) and the movable block (4). The spring (14) is sleeved on the metal bellows (11). A base is fixed on the upper side of the disc (5), and the two ends of the spring (14) are fixedly connected to the base and the bottom of the movable block (4), respectively.

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