Device and method for cleaning mud attached to pipe wall

Abstract

The invention discloses a device and method for cleaning mud attached to the pipe wall, comprising a middle rod extending into the pipe, a liquid containing structure arranged at the lower part of the middle rod, a sealing structure arranged at the outer edge of the liquid containing structure, the sealing structure and the inner wall of the pipe are in sealing contact, and the liquid containing structure and the inner wall of the pipe form a containing space for containing cement dissolving liquid. The device is used to clean mud such as cement, save cement dissolving agent, and clean more thoroughly and efficiently.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline cleaning, and in particular to a device and a method for cleaning mud attached to a pipeline wall. Background Art

[0002] During the construction process, concrete often falls into or flows into the pipe due to careless construction. When the cement residue solidifies on the pipe wall, it will cause pipe blockage or poor water flow, especially cement and other muds are difficult to clean after hardening. Since pipes are often buried underground and have limited internal space, it brings many inconveniences to later construction and use.

[0003] At present, the main method for cleaning cement on the pipe wall is to use a pipe dredging machine, but the pipe dredging machine can only clean large blockages and cannot effectively clean the cement on the pipe wall; there are also methods of using water jets or scrapers to clean the pipe, but this method is often easy to remove scale and other dirt with weak adhesion. If high-pressure jets or high-strength scrapers are used for cement, it is easy to damage the pipe wall; in addition, there are some methods of excavation and re-laying, which not only requires a large economic investment but also has great construction difficulties. Some pipes do not even have the conditions for excavation. Summary of the invention

[0004] The purpose of the present invention is to provide a device for cleaning mud attached to the wall of a pipeline.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for cleaning mud attached to the wall of a pipeline, comprising a middle rod extending into the interior of the pipeline, a liquid containing structure is arranged at the lower part of the middle rod, a sealing structure is arranged at the outer edge of the liquid containing structure, the sealing structure is in sealing contact with the inner wall of the pipeline, and the liquid containing structure and the inner wall of the pipeline form a containing space for containing cement solution.

[0006] Furthermore, the liquid holding structure is an expandable and retractable umbrella-shaped structure; it also includes a sleeve extending into the pipeline, the middle rod passing through the sleeve, and the sleeve is detachably fixed in the pipeline; the center end of the umbrella-shaped structure is connected to the middle rod, the middle section of the umbrella-shaped structure is connected to the sleeve through a bracket, and the middle rod moves axially in the sleeve to drive the umbrella-shaped structure to expand and contract.

[0007] Furthermore, an injection channel for cement dissolving agent to pass through is arranged between the middle rod and the sleeve, and a sleeve nozzle connecting the pipeline and the injection channel is arranged on the side wall of the sleeve close to the umbrella-shaped structure, and the sleeve nozzle is located in the containing space.

[0008] Furthermore, a mounting cover is arranged at the end of the middle rod extending into the pipeline, and the mounting cover is located outside the containing space; a sliding sealing tube which is slidably sleeved on the sleeve is fixedly arranged at the end of the mounting cover, an axially retractable bellows is arranged in the mounting cover, and a head valve for controlling the connection and disconnection between the mounting cover and the sliding sealing tube is arranged at the end of the bellows; a head nozzle is arranged on the side wall of the mounting cover;

[0009] The end of the middle rod is fixedly connected to the end of the bellows; when the middle rod moves toward the inside of the pipeline, the umbrella-shaped structure gradually contracts, and the middle rod presses against the bellows to open the head valve; when the middle rod moves toward the outside of the pipeline, the umbrella-shaped structure gradually unfolds, and the middle rod pulls the bellows to extend to close the head valve.

[0010] Furthermore, a camera is fixedly arranged on the top of the mounting cover, and a signal line of the camera is connected to a controller outside the pipeline through the inside of the corrugated tube and the inside of the middle rod.

[0011] Furthermore, a support is fixedly arranged on the casing, and the support seal is arranged at the pipe mouth. An adjusting nut is fixed in the middle of the support, and the middle rod passes through the adjusting nut and is threadedly connected with the adjusting nut; the support is provided with an injection pipe and a return pipe on the periphery of the adjusting nut, the outer end of the injection pipe is connected to an external device, the inner end of the injection pipe is connected to the injection channel between the middle rod and the casing, the outer part of the return pipe extends out of the pipe, and the inner part of the return pipe is inserted between the casing and the pipe wall.

[0012] Furthermore, the sealing structure is a water stop strip that expands when exposed to water.

[0013] Furthermore, a casing valve with a switching casing nozzle is fixed on the middle rod. When the middle rod moves toward the inside of the pipeline, the umbrella-like structure gradually contracts and the casing valve is closed; when the middle rod moves toward the outside of the pipeline, the umbrella-like structure gradually expands and the casing valve is opened.

[0014] Another object of the present invention is to provide a method for cleaning mud attached to the pipe wall of a pipeline, wherein the pipeline is arranged vertically or obliquely, and the method uses the above-mentioned device for cleaning mud attached to the pipe wall to clean the pipeline, comprising the following steps:

[0015] The first step is to extend the casing into the pipeline, observe the cement adhesion in the pipeline through the camera, determine the location of the cement adhesion in the pipeline, and fix the casing;

[0016] The second step is to move the middle rod to shrink the umbrella-like structure and open the valve at the head;

[0017] The third step is to inject cement dissolving agent into the pipeline through the injection pipe, and the cement dissolving agent is sprayed from the head nozzle onto the cement on the pipeline wall;

[0018] Step 4: After standing for a certain period of time, the cement on the pipe wall and the cement dissolving agent will fully react to dissolve the cement;

[0019] Step 5: If the cement is not cleaned up and some cement is still attached to the pipe wall, pass the umbrella-shaped structure through the cement attachment to fix the casing;

[0020] Step 6: Move the middle rod to unfold the umbrella-shaped structure, so that the umbrella-shaped structure contacts the pipe wall in a sealed manner to seal the pipe and form a storage space. The head valve is closed, and the cement attachment point is located in the storage space.

[0021] Step 7: Inject cement dissolving agent into the pipeline through the injection pipe, and the cement dissolving agent is sprayed from the casing nozzle and sprinkled on the cement on the pipeline wall until the cement attachment is immersed in the cement dissolving agent;

[0022] Step 8: After standing for a certain period of time, the cement on the pipe wall reacts fully with the cement dissolving agent to dissolve the cement, and the middle rod is moved to shrink the umbrella-shaped structure, and the cement dissolving agent is discharged;

[0023] The ninth step is to move the middle rod so that the unfolded size of the umbrella-shaped structure is slightly smaller than the pipe diameter, retract the casing, and use the umbrella-shaped structure to scrape the pipe wall to remove some residual cement. At this time, the cement falls into the flexible sealing cloth. After the device is taken out of the pipe, clean the cement in the flexible sealing cloth.

[0024] Another object of the present invention is to provide a method for cleaning mud attached to the pipe wall of a pipeline. The pipeline is arranged horizontally and is cleaned using the above-mentioned device for cleaning mud attached to the pipe wall. The steps are as follows:

[0025] The first step is to extend the casing into the pipeline, observe the cement adhesion on the inner wall of the pipeline through the camera, determine the cement adhesion position, and install the support to fix the casing;

[0026] The second step is to move the middle rod to shrink the umbrella-shaped structure, open the head valve, seal the support and the pipe opening, and keep the return pipe at a high position;

[0027] The third step is to inject cement dissolving agent into the pipeline through the injection pipe. When the cement dissolving agent starts to flow out of the return pipe, the return pipe is closed, and the cement dissolving agent is sprayed out from the head nozzle and sprinkled on the cement on the wall of the pipeline until the cement dissolving agent fills the pipeline.

[0028] Step 4: After standing for a certain period of time, wait for the cement on the pipe wall to fully react with the cement dissolving agent, and the cement is dissolved in the cement dissolving agent. Rotate the support to lower the return pipe to the lowest position, and open the return pipe to drain the cement dissolving agent.

[0029] Step 5: If the cement is not cleaned up and some cement is still attached to the pipe wall, pass the umbrella-shaped structure through the cement attachment, install the support fixing sleeve, seal the support and the pipe mouth, and keep the return pipe at a high position;

[0030] Step 6: Move the middle rod to unfold the umbrella-like structure and close the head valve;

[0031] Step 7: Inject cement dissolving agent into the pipeline through the injection pipe, wait for the cement dissolving agent to flow out of the return pipe, close the return pipe, and spray the cement dissolving agent from the casing nozzle onto the cement on the pipeline wall until the cement dissolving agent fills the pipeline;

[0032] Step 8: After standing for a certain period of time, the cement on the pipe wall reacts fully with the cement dissolving agent, and the cement is dissolved in the solution. The support is rotated to lower the liquid return pipe, and the liquid return pipe is opened to drain the cement dissolving agent.

[0033] The ninth step is to rotate the middle rod so that the unfolded size of the umbrella-shaped structure is slightly smaller than the pipe diameter, retract the casing, and use the umbrella-shaped structure to scrape the pipe wall to remove some residual cement. At this time, the cement will fall into the flexible sealing cloth. After the device is pulled out of the pipe, the cement in the flexible sealing cloth can be cleaned.

[0034] The technical effects of the present invention are as follows:

[0035] (1) The device of the present invention can quickly and effectively remove cement from the pipe wall without excavating the pipe, and can clean cement attached to any position of any circular pipe wall.

[0036] (2) The device of the present invention can solve the problem of cement dissolving agent being lost and wasted before dissolving cement after being poured into the pipeline, especially for vertical pipe walls and inclined pipe walls, which can be accurately cleaned to save a large amount of dissolving liquid.

[0037] (3) The equipment of the present invention can accurately and quantitatively clean vertical pipes to prevent excessive dissolved liquid from flowing into the soil and groundwater and causing pollution. For horizontal pipes, the dissolved liquid can be recovered through the return pipe and then discharged, which is highly environmentally friendly.

[0038] (4) The device of the present invention is simple, easy to operate, low in cost and convenient to carry.

[0039] (5) The equipment of the present invention has the function of recycling cement blocks, thereby preventing dissolved large blocks of cement from falling into the pipeline and continuing to clog it. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of a cement cleaning device for cleaning the wall of a circular pipe in an embodiment;

[0041] Figure 2 This is a structural diagram of a cement device for cleaning the wall of a horizontal circular pipeline in an embodiment;

[0042] Figure 3 This is a structural diagram of a cement device for cleaning a vertical (inclined) circular pipe wall in an embodiment;

[0043] Figure 4 This is a structural diagram of the head of a cement device for cleaning the wall of a circular pipe in an embodiment.

[0044] Figure numerals: 1. water-swellable waterstop strip; 2. casing; 3. middle rod; 4. injection tube; 5. bracket; 6. support bone; 7. flexible sealing cloth; 8. first disc seat; 9. second disc seat; 10. rivet; 11. support; 12. mounting cover; 13. pipeline; 14. adhesive cement; 15. internal thread nut; 16. signal line; 17. liquid return pipe; 18. head valve; 19. casing nozzle; 20. camera; 21. bellows; 22. casing valve; 23. head nozzle; 24. sliding sealing tube. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Example 1

[0047] like Figure 1-4 As shown, a device for cleaning mud attached to the wall of a pipeline includes a middle rod 3 extending into the interior of a pipeline 13, a liquid containing structure is arranged at the lower part of the middle rod 3, a sealing structure is arranged at the outer edge of the liquid containing structure, the sealing structure is in sealing contact with the inner wall of the pipeline 13, and the liquid containing structure and the inner wall of the pipeline 13 enclose a containing space for containing cement solution.

[0048] The liquid holding structure is an umbrella-shaped structure that can be expanded and retracted.

[0049] It also includes a sleeve 2 extending into the pipe 13, a middle rod 3 passing through the sleeve 2, and the sleeve 2 is detachably fixed in the pipe 13; the central end of the umbrella-like structure is connected to the middle rod 3, and the middle section of the umbrella-like structure is connected to the sleeve 2 through a bracket 5. The middle rod 3 moves axially in the sleeve 2 to drive the umbrella-like structure to extend and contract, and the upper end of the middle rod 3 extends out of the sleeve 2 for a certain distance.

[0050] An injection channel for cement dissolving agent to pass through is arranged between the middle rod 3 and the sleeve 2. A plurality of sleeve nozzles 19 are arranged on the side wall of the sleeve 2 close to the umbrella-shaped structure, which connect the pipeline 13 and the injection channel. The sleeve nozzles 19 are located in the storage space. A sleeve valve 22 for opening and closing the sleeve nozzles 19 is fixed on the middle rod 3. When the middle rod 3 moves toward the inside of the pipeline 13, the umbrella-shaped structure gradually contracts and the sleeve valve 22 is closed; when the middle rod 3 moves toward the outside of the pipeline 13, the umbrella-shaped structure gradually expands and the sleeve valve 22 is opened.

[0051] The end of the middle rod 3 extending into the pipeline 13 is provided with a mounting cover 12, and the mounting cover 12 is located outside the containing space; a sliding sealing tube 24 slidably sleeved on the sleeve 2 is fixedly provided at the end of the mounting cover 12, an axially retractable bellows 21 is provided in the mounting cover 12, and a head valve 18 for controlling the connection and disconnection between the mounting cover 12 and the sliding sealing tube 24 is provided at the end of the bellows 21; and a head nozzle 23 is provided on the side walls around the mounting cover 12;

[0052] The end of the middle rod 3 is fixedly connected to the end of the bellows 21; when the middle rod 3 moves toward the inside of the pipeline 13, the umbrella-shaped structure gradually contracts, and the middle rod 3 compresses the bellows 21 to open the head valve 18; when the middle rod 3 moves toward the outside of the pipeline 13, the umbrella-shaped structure gradually unfolds, and the middle rod 3 pulls the bellows 21 to extend to close the head valve 18.

[0053] When the middle rod 3 moves toward the inside of the pipe 13, the sleeve valve 22 is closed; when the middle rod 3 moves toward the outside of the pipe 13, the sleeve valve 22 is opened. When the pipe wall of the pipe 13 is completely blocked or severely blocked, only the head nozzle 23 can be controlled to spray cement dissolving agent, and when only cement 14 is attached to the pipe wall of the pipe 13, only the sleeve nozzle 19 can be controlled to spray cement dissolving agent, which is highly targeted and reduces the waste of cement dissolving agent.

[0054] The top of the mounting cover 12 is fixed with a camera 20, and the signal line 16 of the camera 20 is connected to the controller outside the pipe 13 through the inside of the bellows 21 and the inside of the middle rod 3. An external video display can be connected, and after the display is connected, the position of cement attachment in the pipe 13 can be observed to achieve accurate cleaning.

[0055] Specifically, the umbrella-shaped structure includes a plurality of support bones 6 and a plurality of brackets 5 distributed circumferentially around the middle pole 3. A flexible sealing cloth 7 is laid on the plurality of support bones 6, and the middle is fixed and sealed by a mounting cover 12. One end of the support bone 6 is hinged to a first disc seat 8 axially limited on the middle pole 3; one end of the bracket 5 is hinged to a second disc seat 9 axially limited on the sleeve 2, and the other end of the bracket 5 is hinged to the middle of the support bone 6. The bracket 5 and the support bone 6 are connected one by one through rivets 10. A first disc seat 8 is set on the sliding sealing tube 24 for axial limitation.

[0056] The flexible sealing cloth 7 needs to have a waterproof function and not react with the cement dissolving agent. The flexible sealing cloth 7 can be thickened around or provided with an elastic sealing gasket to increase its contact sealing performance with the pipe wall of the pipe 13 .

[0057] The middle rod 3 is threadedly connected with the sleeve 2. A support 11 is fixedly arranged on the sleeve 2, and the support 11 is sealed at the mouth of the pipeline 13. An adjusting nut is fixed in the middle of the support 11, and the middle rod 3 passes through the adjusting nut and is threadedly connected with the adjusting nut. The support 11 is provided with a liquid injection pipe 4 and a liquid return pipe 17 on the periphery of the adjusting nut. The liquid injection pipe 4 is connected with the liquid injection channel between the middle rod 3 and the sleeve 2, and the outer end of the liquid injection pipe 4 can be connected to a liquid injection pump or other liquid injectors through a pipeline. The liquid return pipe 17 is inserted between the sleeve 2 and the pipe wall of the pipeline 13.

[0058] The middle rod 3 has threads at both ends, and the middle rod 3 can be fixed by an internal thread nut 15 to lengthen the middle rod 3. A circular turntable or an electric rotating device can be mounted on the end of the middle rod 3, and rotating the middle rod 3 can save effort.

[0059] The sealing structure is a water stop strip 1 that expands when exposed to water.

[0060] The sleeve 2 is slightly larger than the diameter of the middle rod 3 , and the middle rod 3 can move freely in the sleeve 2 .

[0061] The middle rod 3 is rotated to move the middle rod 3 out of the pipe 13, driving the first disc seat 8 to move out of the pipe 13, and the support bone 6 will open under the action of the bracket 5. When the flexible sealing cloth 7 touches the pipe wall, the pipe 13 is blocked. In addition, the middle rod 3 moves out of the pipe 13 to close the head valve 18 and open the sleeve valve 22. The middle rod 3 is rotated to move the middle rod 3 into the pipe 13, driving the first disc seat 8 to move into the pipe 13, and the support bone 6 shrinks under the action of the bracket 5. The middle rod 3 moves into the pipe 13 to open the head valve 18 and close the sleeve valve 22.

[0062] Example 2

[0063] A method for cleaning mud attached to the pipe wall, the pipe 13 is arranged vertically or obliquely, and when the pipe is completely blocked by cement or the blocked area is large, such as Figure 3 As shown, the cleaning is performed using a device for cleaning mud attached to the pipe wall in Example 1, including the following steps:

[0064] The first step is to extend the casing 2 into the pipe 13, observe the cement adhesion in the pipe 13 through the camera 20, determine the location of the cement adhesion in the pipe 13, and fix the casing 2;

[0065] The second step is to move the middle rod 3 to shrink the umbrella-shaped structure and open the head valve 18;

[0066] The third step is to inject cement dissolving agent into the pipe 13 through the injection pipe 4, and the cement dissolving agent is sprayed from the head nozzle 23 onto the cement on the pipe wall of the pipe 13;

[0067] Step 4: After standing for a certain period of time, the cement on the wall of the pipeline 13 and the cement dissolving agent are fully reacted to dissolve the cement;

[0068] Step 5: If the cement is not cleaned up and some cement is still attached to the pipe wall, pass the umbrella-shaped structure through the cement attachment to fix the casing 2;

[0069] Step 6: Move the middle rod 3 to unfold the umbrella-shaped structure, so that the umbrella-shaped structure contacts the pipe wall of the pipe 13 in a sealed manner to block the pipe 13 and form a storage space. The head valve 18 is closed, and the attached cement 14 is located in the storage space.

[0070] Step 7: inject cement dissolving agent into the pipe 13 through the injection pipe 4, and the cement dissolving agent is sprayed from the sleeve nozzle 19 and sprinkled on the cement on the wall of the pipe 13 until the cement attachment part is immersed in the cement dissolving agent;

[0071] Step 8: After standing for a certain period of time, the cement attached to the wall of the pipe 13 reacts fully with the cement dissolving agent to dissolve the cement, and the middle rod 3 is moved to shrink the umbrella-shaped structure, and the cement dissolving agent is emptied;

[0072] The ninth step is to move the middle rod 3 so that the unfolded size of the umbrella-shaped structure is slightly smaller than the pipe diameter, retract the sleeve 2, and the umbrella-shaped structure scrapes the pipe wall of the pipe 13 to remove some residual cement. At this time, the cement falls into the flexible sealing cloth 7. After the device is taken out from the pipe 13, the cement in the flexible sealing cloth 7 can be cleaned.

[0073] When it is observed through the camera 20 that only the pipe wall of the pipe 13 is blocked, cleaning can be started directly from the fifth step.

[0074] Example 3

[0075] A method for cleaning mud attached to a pipe wall, wherein the pipe 13 is arranged horizontally and is cleaned using a device for cleaning mud attached to a pipe wall in Example 1, and the steps are as follows:

[0076] The first step is to extend the casing 2 into the pipe 13, observe the cement adhesion on the inner wall of the pipe 13 through the camera 20, determine the cement adhesion position, and install the support 11 to fix the casing 2;

[0077] The second step is to move the middle rod 3 to shrink the umbrella-shaped structure, open the head valve 18, seal the support 11 and the pipe opening of the pipeline 13, and keep the liquid return pipe 17 at a high position;

[0078] The third step is to inject cement dissolving agent into the pipe 13 through the injection pipe 4. When the cement dissolving agent starts to flow out of the return pipe 17, the return pipe 17 is closed, and the cement dissolving agent is sprayed out from the head nozzle 23 and sprinkled on the cement 14 attached to the wall of the pipe 13 until the cement dissolving agent fills the pipe.

[0079] Step 4: After standing for a certain period of time, the cement 14 attached to the pipe wall of the pipe 13 fully reacts with the cement dissolving agent, and the cement is dissolved in the cement dissolving agent. The support 11 is rotated to lower the liquid return pipe 17, and the liquid return pipe 17 is opened to drain the cement dissolving agent.

[0080] Step 5: If the cement is not cleaned up and some cement is still attached to the pipe wall, pass the umbrella-shaped structure through the cement attachment, install the support 11 to fix the sleeve 2, seal the support 11 and the pipe 13, and keep the return pipe 17 at a high position;

[0081] Step 6: Move the middle rod 3 to unfold the umbrella-like structure and close the head valve 18;

[0082] Step 7: Inject cement dissolving agent into the pipe 13 through the injection pipe 4, and when the cement dissolving agent starts to flow out of the return pipe 17, close the return pipe 17, and spray the cement dissolving agent from the sleeve nozzle 19 onto the cement on the wall of the pipe 13 until the cement dissolving agent fills the pipe 13;

[0083] Step 8: After standing for a certain period of time, the cement on the pipe wall of the pipe 13 reacts fully with the cement dissolving agent, and the cement is dissolved in the solution. The support 11 is rotated to lower the liquid return pipe 17, and the liquid return pipe 17 is opened to drain the cement dissolving agent.

[0084] The ninth step is to rotate the middle rod 3 so that the unfolded size of the umbrella-shaped structure is slightly smaller than the pipe diameter, retract the sleeve 2, and the umbrella-shaped structure scrapes the wall of the pipe 13 to remove some residual cement. At this time, the cement will fall into the flexible sealing cloth 7. After the device pulls out the pipe 13, the cement in the flexible sealing cloth 7 can be cleaned.

[0085] When it is observed through the camera 20 that only the pipe wall of the pipe 13 is blocked, cleaning can be started directly from the fifth step.

[0086] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A device for cleaning mud attached to the pipe wall, characterized in that: It includes a middle rod extending into the interior of the pipeline, a liquid containing structure is arranged at the lower part of the middle rod, a sealing structure is arranged at the outer edge of the liquid containing structure, the sealing structure is in sealing contact with the inner wall of the pipeline, and the liquid containing structure and the inner wall of the pipeline enclose a containing space for containing cement solution; The liquid holding structure is an expandable and retractable umbrella-shaped structure; it also includes a sleeve extending into the pipeline, the middle rod passes through the sleeve, and the sleeve is detachably fixed in the pipeline; the center end of the umbrella-shaped structure is connected to the middle rod, the middle section of the umbrella-shaped structure is connected to the sleeve through a bracket, and the middle rod moves axially in the sleeve to drive the umbrella-shaped structure to expand and contract; A mounting cover is arranged at the end of the middle rod extending into the pipeline, and the mounting cover is located outside the containing space; a sliding sealing tube which is slidably sleeved on the sleeve is fixedly arranged at the end of the mounting cover, an axially retractable bellows is arranged inside the mounting cover, and a head valve for controlling the connection and disconnection between the mounting cover and the sliding sealing tube is arranged at the end of the bellows; a head nozzle is arranged on the side wall of the mounting cover; The end of the middle rod is fixedly connected to the end of the bellows; when the middle rod moves toward the inside of the pipeline, the umbrella-shaped structure gradually contracts, the middle rod compresses the bellows to open the head valve; when the middle rod moves toward the outside of the pipeline, the umbrella-shaped structure gradually expands, the middle rod pulls the bellows to extend, and the head valve is closed; An injection channel for cement dissolving agent to pass through is arranged between the middle rod and the sleeve, and a sleeve nozzle connecting the pipeline and the injection channel is arranged on the side wall of the sleeve close to the umbrella-shaped structure, and the sleeve nozzle is located in the containing space; A casing valve with a switching casing nozzle is fixed on the middle rod. When the middle rod moves toward the inside of the pipeline, the umbrella-shaped structure gradually contracts and the casing valve is closed; when the middle rod moves toward the outside of the pipeline, the umbrella-shaped structure gradually expands and the casing valve is opened.

2. The device for cleaning mud attached to the pipe wall according to claim 1 is characterized in that: A camera is fixedly arranged on the top of the mounting cover, and a signal line of the camera is connected with a controller outside the pipeline through the inside of the corrugated pipe and the inside of the middle rod.

3. The device for cleaning mud attached to the pipe wall according to claim 1 is characterized in that: A support is fixedly arranged on the casing, the support seal is arranged at the pipe opening, an adjusting nut is fixed in the middle of the support, the middle rod passes through the adjusting nut and is threadedly connected to the adjusting nut; The support is provided with an injection pipe and a return pipe on the periphery of the adjusting nut. The outer end of the injection pipe is connected to the external equipment, the inner end of the injection pipe is communicated with the injection channel between the middle rod and the sleeve, the outer part of the return pipe extends out of the pipeline, and the inner part of the return pipe is inserted between the sleeve and the pipeline wall.

4. The device for cleaning mud attached to the pipe wall according to claim 1, characterized in that: The sealing structure is a water stop strip that expands when exposed to water.

5. A method for cleaning mud attached to the pipe wall, characterized in that: The pipeline is arranged vertically or obliquely, and the cleaning is performed using the device for cleaning mud attached to the pipeline wall as claimed in claim 3, comprising the following steps: The first step is to extend the casing into the pipeline, observe the cement adhesion in the pipeline through the camera, determine the location of the cement adhesion in the pipeline, and fix the casing; The second step is to move the middle rod to shrink the umbrella-like structure and open the valve at the head; The third step is to inject cement dissolving agent into the pipeline through the injection pipe, and the cement dissolving agent is sprayed from the head nozzle onto the cement on the pipeline wall; Step 4: After standing for a certain period of time, the cement on the pipe wall and the cement dissolving agent will fully react to dissolve the cement; Step 5: If the cement is not cleaned up and some cement is still attached to the pipe wall, pass the umbrella-shaped structure through the cement attachment to fix the casing; Step 6: Move the middle rod to unfold the umbrella-shaped structure, so that the umbrella-shaped structure contacts the pipe wall in a sealed manner to seal the pipe and form a storage space. The head valve is closed, and the cement attachment point is located in the storage space. Step 7: Inject cement dissolving agent into the pipeline through the injection pipe, and the cement dissolving agent is sprayed from the casing nozzle and sprinkled on the cement on the pipeline wall until the cement attachment is immersed in the cement dissolving agent; Step 8: After standing for a certain period of time, the cement on the pipe wall reacts fully with the cement dissolving agent to dissolve the cement, and the middle rod is moved to shrink the umbrella-shaped structure, and the cement dissolving agent is discharged; The ninth step is to move the middle rod so that the unfolded size of the umbrella-shaped structure is slightly smaller than the pipe diameter, retract the casing, and use the umbrella-shaped structure to scrape the pipe wall to remove some residual cement. At this time, the cement falls into the flexible sealing cloth. After the device is taken out of the pipe, clean the cement in the flexible sealing cloth.

6. A method for cleaning mud attached to the pipe wall, characterized in that: The pipeline is arranged horizontally, and is cleaned by using a device for cleaning mud attached to the pipeline wall as claimed in claim 3. A support is fixedly arranged on the casing, and the support is sealed at the pipeline opening. An adjusting nut is fixed in the middle of the support, and the middle rod passes through the adjusting nut and is threadedly connected to the adjusting nut. The support is provided with a liquid injection pipe and a liquid return pipe on the periphery of the adjusting nut, the outer end of the liquid injection pipe is connected to the external equipment, the inner end of the liquid injection pipe is communicated with the liquid injection channel between the middle rod and the sleeve, the outer end of the liquid return pipe extends out of the pipeline, and the inner end of the liquid return pipe is inserted between the sleeve and the pipeline wall; the steps are as follows: The first step is to extend the casing into the pipeline, observe the cement adhesion on the inner wall of the pipeline through the camera, determine the cement adhesion position, and install the support to fix the casing; The second step is to move the middle rod to shrink the umbrella-shaped structure, open the head valve, seal the support and the pipe opening, and keep the return pipe at a high position; The third step is to inject cement dissolving agent into the pipeline through the injection pipe. When the cement dissolving agent starts to flow out of the return pipe, the return pipe is closed, and the cement dissolving agent is sprayed out from the head nozzle and sprinkled on the cement on the wall of the pipeline until the cement dissolving agent fills the pipeline. Step 4: After standing for a certain period of time, wait for the cement on the pipe wall to fully react with the cement dissolving agent, and the cement is dissolved in the cement dissolving agent. Rotate the support to lower the return pipe to the lowest position, and open the return pipe to drain the cement dissolving agent. Step 5: If the cement is not cleaned up and some cement is still attached to the pipe wall, pass the umbrella-shaped structure through the cement attachment, install the support fixing sleeve, seal the support and the pipe mouth, and keep the return pipe at a high position; Step 6: Move the middle rod to unfold the umbrella-like structure and close the head valve; Step 7: Inject cement dissolving agent into the pipeline through the injection pipe, wait for the cement dissolving agent to flow out of the return pipe, close the return pipe, and spray the cement dissolving agent from the casing nozzle onto the cement on the pipeline wall until the cement dissolving agent fills the pipeline; Step 8: After standing for a certain period of time, the cement on the pipe wall reacts fully with the cement dissolving agent, and the cement is dissolved in the solution. The support is rotated to lower the liquid return pipe, and the liquid return pipe is opened to drain the cement dissolving agent. The ninth step is to rotate the middle rod so that the unfolded size of the umbrella-shaped structure is slightly smaller than the pipe diameter, retract the casing, and use the umbrella-shaped structure to scrape the pipe wall to remove some residual cement. At this time, the cement will fall into the flexible sealing cloth. After the device is pulled out of the pipe, the cement in the flexible sealing cloth can be cleaned.

Images