A pneumatic device for use in a construction apparatus and method for pipe unblocking

Abstract

The present application relates to the technical field of underground pipe network construction in municipal infrastructure, and discloses a construction device and method for pipe dredging by using pneumatic equipment. The pipe is divided into three segments which are not connected to each other by the first movable rubber plug and the second movable rubber plug. In the pipe area where the conical surface of the first movable rubber plug is located, the temporarily installed detachable water injection assembly is used to soften the soil and dirt attached to the inside of the pipe. The pressure injection is performed between the first movable rubber plug and the second movable rubber plug by using the pressure boosting assembly, and the ejector rod is used to abut against the back surface of the second movable rubber plug. The continuous pressure injection is performed by using the pressure boosting assembly, so that the first movable rubber plug moves towards the area where the pipe sludge is located. In the case where the air pressure is insufficient, the first movable rubber plug is lifted and advanced by using the jack assembly. The present application has the advantages of effectively solving the pipe dredging of the completed curved pipe by pipe jacking, and is simple, safe, efficient and economical in the pipe dredging operation.

Description

Technical Field

[0001] This invention relates to the field of underground pipeline construction technology in municipal infrastructure, specifically to a pneumatic device and method for pipeline dredging. Background Technology

[0002] In my country, pipeline projects generally use circular pipes, such as power pipelines, water supply and drainage pipelines, gas pipelines, and central drainage pipes in tunnels. After construction, before functional testing, it is necessary to clean the debris and silt inside the pipes to ensure smooth operation later. Existing circular pipe cleaning devices include manual cleaning and high-pressure water flushing. Manual cleaning is impossible to complete within small pipe diameters, and in many cases, this method is extremely inefficient.

[0003] Chinese patent CN107989170B discloses a pipe dredging vehicle and a pipe dredging and cleaning process using the same. This patent includes a rear compartment with a built-in water tank and high-pressure water pipe. A water pipe fixing frame is installed inside the rear compartment. The water pipe fixing frame includes a rotating frame pivotally fixed inside the rear compartment and a turntable rotatably connected to the rotating frame for the high-pressure water pipe to be wound around. A nozzle structure is detachably connected to the end of the high-pressure water pipe. The nozzle structure has multiple spray holes facing one side of the high-pressure water pipe. A detachable pipe cleaner is fitted on the outside of the nozzle mechanism. Cables extending to both ends of the pipe cleaner are connected to both ends of the pipe, achieving the goal of reducing the impact of pipe layout restrictions on the dredging effect. However, this patent has the following drawbacks:

[0004] 1. When the pipeline layout presents a parabola or a curve with a large curvature, the equipment's unblocking function is limited;

[0005] 2. The pipe cleaner has cables at both ends that extend to both ends of the pipe, making the operation complicated.

[0006] 3. Unclogging a single pipe requires repeated cleaning to complete, resulting in low equipment efficiency.

[0007] Given the massive scale of pipeline cleaning projects, existing technologies are insufficient to meet the project requirements, necessitating the urgent use of pneumatic equipment for pipeline dredging construction devices and methods. Summary of the Invention

[0008] To address the aforementioned shortcomings of existing technologies, a pneumatic device and method for pipeline dredging are provided. This device effectively solves the problem of dredging curved pipelines by pipe jacking. It is simple to operate, safe, efficient, and has significant economic benefits in pipeline dredging operations.

[0009] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0010] A pneumatic device for pipeline dredging, characterized in that it includes:

[0011] The movable rubber plug consists of a first movable rubber plug located on the inner side of the pipe and a second movable rubber plug located on the outer side of the pipe. The maximum cross-sectional dimensions of the first and second movable rubber plugs are matched with the inner diameter of the pipe. The first and second movable rubber plugs divide the pipe into three non-connected cavities. A tapered surface structure is provided on the end face of the first movable rubber plug away from the second movable rubber plug.

[0012] The water injection assembly has a water injection hole that passes through the first movable rubber plug on the side near the pipe port. When the first movable rubber plug has been installed, the water injection assembly is connected to the water injection hole in a detachable manner. Before the second movable rubber plug is installed, the water injection assembly is removed and the water injection hole is blocked.

[0013] The pressurizing component has a pressurizing hole and a pressure relief hole on the side of the second movable rubber plug near the pipe port, which penetrate the second movable rubber plug. The pressurizing component is connected to the pressurizing hole, and the pressure relief hole is blocked. The pressurizing component increases the air pressure between the first and second movable rubber plugs, thereby pushing the second movable rubber plug in the pipe.

[0014] The jack assembly and the push rod are provided. The jack assembly is fixedly installed on the outside of the pipe port. One end of the push rod is fixed to the jack assembly, and the other end of the push rod is detachably fixed to the end face of the second movable rubber plug. The push rod restricts the movement of the first movable rubber plug toward the pipe port. When the pressurizing assembly cannot push the first movable rubber plug to move in the pipe, the push rod activates the jack assembly to push the second movable rubber plug, thereby indirectly pushing the first movable rubber plug.

[0015] According to the above technical solution, the water injection component includes a water injection pump connected to an external water source, and a conduit connecting the water injection pump and the water injection hole. One end of the conduit is connected to the water injection pump, and the other end of the conduit is connected to the water injection hole in a detachable manner. A valve is provided in the water injection hole, and the valve is opened when the conduit is connected to the water injection hole.

[0016] According to the above technical solution, the pressurization component includes an air booster pump and an air pipe connected between the air booster pump and the pressurization port. One end of the air pipe is connected to the air booster pump, and the other end of the air pipe is connected to the pressurization port in a detachable manner. Valves are provided on both the pressurization port and the pressure relief port. The valve of the pressurization port is opened when the conduit is connected to the water injection port, and the valve of the pressure relief port is opened when the jack assembly is lifted and retracted.

[0017] According to the above technical solution, the jack assembly includes a jack fixed to the outer back wall of the pipe port, a jack with the jacking direction parallel to the pipe jack rod, and a jacking iron located between the jack and the jack rod. One end of the jack is fixed to the back wall, the other end of the jack is fixed to the jacking iron, and the jack rod is fixed to the other end of the jacking iron.

[0018] According to the above technical solution, it also includes a traction wire assembly, a part of which is fixed on the top rod, and another part of which passes through the second movable rubber plug and is fixed on the non-conical surface of the first movable rubber plug. A sealing ring is provided where the second movable rubber plug passes through the traction assembly. The traction wire assembly is capable of pulling the first movable rubber plug toward the pipe port.

[0019] According to the above technical solution, the traction rope assembly includes a traction rope connecting device fixed to the end face of the first movable rubber plug near the second movable rubber plug, a traction coil fixed to the top rod, and a traction rope connecting the traction rope connecting device and the traction coil; one end of the traction rope is fixed to the traction rope connecting device, and the second movable rubber plug has a through hole for the traction rope to pass through. The through hole has a removable and washable sealing structure. The middle part of the traction rope passes through the through hole, and the other end of the traction rope is fixed to the traction coil; by opening the sealing structure in the through hole and rotating the traction coil, the first movable rubber plug is pulled towards the pipe port.

[0020] According to the above technical solution, the traction reel includes a drum and a throttle. The drum is mounted on the top rod via a bearing, and the throttle is located on the end face of the drum away from the top rod, with the throttle positioned at the axis of the drum. The end of the traction rope is fixedly wound around the drum.

[0021] A construction method for using pneumatic equipment to dredge pipes includes the following steps:

[0022] S1: Check if a certain length of area at the pipe end is unobstructed. If it is unobstructed, proceed to the next step. If it is not unobstructed, clean the area.

[0023] S2: Install the first movable rubber plug and water injection assembly, and inject water into the inner pipe of the first movable rubber plug for immersion;

[0024] S3: Remove the water injection assembly, and then install the second movable rubber plug, the pressurization assembly, the jack assembly, and the jack rod;

[0025] S4: Inject pressure between the first and second movable rubber plugs to push the first movable rubber plug forward into the pipe;

[0026] S5: The first movable rubber plug is pushed out from the other end of the pipe, and the components are removed and the cleaning operation is completed.

[0027] According to the above technical solution, step SA is added between steps S4 and S5. In step SA, it is determined whether the operation of the first movable rubber plug is unobstructed. If the first movable rubber plug moves forward steadily to clear the pipe, the process transitions directly from step S4 to S5. If the pressurizing component pressurizes the first movable rubber plug for a long time and it stops moving forward or the forward speed is abnormally slow, the pressurizing component stops the pressurization operation and closes the pressurizing hole. The first movable rubber plug moves forward steadily by repeatedly pressurizing through the jack component.

[0028] According to the above technical solution, step SA specifically includes the following steps:

[0029] SA1: Close the booster assembly and the valves of the booster port and the pressure relief port;

[0030] SA2: The jack assembly moves upward toward the inside of the pipe, pushing the second movable rubber plug and the first movable rubber plug together to move toward the inside of the pipe via the jack rod;

[0031] SA3: After the jack assembly is raised to its maximum stroke, the pressure relief hole is opened, and the jack assembly retracts.

[0032] SA4: After the jack assembly retracts to its minimum size, close the pressure relief hole and open the pressure boosting hole. The pressure boosting assembly will continue to inject pressure.

[0033] SA5: If the first movable rubber plug still moves forward abnormally, repeat steps SA1-SA5 until the first movable rubber plug is pushed out from the other end of the pipe; if the first movable rubber plug moves forward smoothly, the pressurizing component continues to inject pressure until the first movable rubber plug is pushed out from the other end of the pipe.

[0034] The present invention has the following beneficial effects:

[0035] 1. The pipeline is divided into three unconnected sections by a first movable rubber plug and a second movable rubber plug. These three sections are: the pipeline area containing the conical surface of the first movable rubber plug, the pipeline area between the first and second movable rubber plugs, and the pipeline area between the second movable rubber plug and the pipeline port. Within the pipeline area containing the conical surface of the first movable rubber plug, a temporarily installed, removable water injection component softens the dirt and grime adhering to the inside of the pipeline. Pressure is injected between the first and second movable rubber plugs using a pressurizing component, and a push rod is used to press against the back of the second movable rubber plug. As the air pressure between the first and second movable rubber plugs gradually increases, the first movable rubber plug moves towards the area of ​​sludge in the pipeline.

[0036] In addition, if the air pressure is insufficient to move the first movable rubber stopper forward, the jack assembly is used to forcibly push the second movable rubber stopper forward, compressing air to increase the external force for the first movable rubber stopper to move forward.

[0037] Based on the above measures, the following effects are achieved:

[0038] (1) It can be better applied to the dredging work of parabolic and curved pipelines; it has the advantage of effectively solving the problem of jacking pipe to complete the dredging of curved pipelines; it is easy to operate, safe and efficient in pipeline dredging work, and has obvious economic benefits.

[0039] (2) Since the first movable rubber plug is in contact with the inner wall of the pipe, the device can push the first movable rubber plug through the pipe to clean up the pipe, which can achieve the effect of thoroughly cleaning the pipe garbage. The cleaning work is efficient and effective; and the pipe will not be damaged during the cleaning process.

[0040] (3) This device can be reused multiple times and has stable performance.

[0041] 2. Add a traction rope assembly. The traction rope assembly has two functions. First, when the first movable rubber plug cannot move forward normally under the action of the pressurization assembly and the jack assembly, the traction rope assembly will pull out the first movable rubber plug. Second, the traction rope assembly can be used to observe the forward speed, distance and other parameters of the first movable rubber plug, to determine whether the first movable rubber plug is moving forward stably to clear the garbage in the pipe, and thus decide whether to restart the jack assembly to further force pressure. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the state in a pipeline according to an embodiment of the present invention;

[0043] Figure 2 This is a diagram illustrating the usage state of the pipe during water immersion, according to an embodiment of the present invention.

[0044] Figure 3 This is a schematic diagram of the state of the pressurization and propulsion process of the pressurization component according to an embodiment of the present invention;

[0045] Figure 4 This is a front view of the first movable rubber stopper provided in an embodiment of the present invention;

[0046] Figure 5 This is a side view of the first movable rubber stopper provided in an embodiment of the present invention;

[0047] Figure 6 This is a front view of the traction rope assembly and the second movable rubber plug provided in an embodiment of the present invention;

[0048] Figure 7 This is a side view of the traction rope assembly and the second movable rubber plug provided in an embodiment of the present invention;

[0049] Figure 8 This is a connection diagram of the jack assembly and the jack rod provided in an embodiment of the present invention;

[0050] Figure 9 This is a schematic diagram of the structure of the traction reel provided in an embodiment of the present invention;

[0051] Figure 10 This is a flowchart of the first type of method provided in the embodiments of the present invention;

[0052] Figure 11 This is a flowchart of the second type of method provided in the embodiments of the present invention;

[0053] In the diagram, 1. Pipe; 2. First movable rubber plug; 3. Second movable rubber plug; 4. Water injection assembly; 4-1. Water injection hole; 4-2. Water injection pump; 4-3. Conduit; 5. Pressure boosting assembly; 5-1. Pressure boosting hole; 5-2. Pressure relief hole; 5-3. Air booster pump conduit; 5-4. Air pipe; 6. Jack assembly; 6-1. Back wall; 6-2. Jack; 6-3. Top iron; 7. Top rod; 8. Traction rope assembly; 8-1. Traction rope connecting device; 8-2. Traction cable reel; 8-3. Traction rope; 8-4. Through hole; 8-5. Sealing structure. Detailed Implementation

[0054] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0055] Reference Figures 1-9 As shown, the present invention provides a pneumatic device for pipeline dredging construction.

[0056] Example 1

[0057] Includes movable rubber plugs, which are composed of a first movable rubber plug 2 located on the inner side of the pipe 1 and a second movable rubber plug located on the outer side of the pipe 3. The maximum cross-sectional dimensions of the first and second movable rubber plugs are matched with the inner diameter of the pipe. The first and second movable rubber plugs divide the pipe into three non-connected cavities. A tapered surface structure is provided on the end face of the first movable rubber plug away from the second movable rubber plug.

[0058] The water injection component 4 has a water injection hole 4-1 that penetrates the first movable rubber plug on the side near the pipe port. When the first movable rubber plug has been installed, the water injection component is connected to the water injection hole in a detachable manner. Before the second movable rubber plug is installed, the water injection component is removed and the water injection hole is blocked.

[0059] The pressurizing component 5 has a pressurizing hole 5-1 and a pressure relief hole 5-2 that penetrate the second movable rubber plug on the side near the pipe port. The pressurizing component is connected to the pressurizing hole and the pressure relief hole is blocked. The pressurizing component increases the air pressure between the first and second movable rubber plugs to push the second movable rubber plug in the pipe.

[0060] The jack assembly 6 and the push rod 7 are provided. The jack assembly is fixedly installed on the outside of the pipe port. One end of the push rod is fixed to the jack assembly, and the other end of the push rod is detachably fixed to the end face of the second movable rubber plug. The push rod restricts the movement of the first movable rubber plug toward the pipe port. When the pressurizing assembly cannot push the first movable rubber plug to move in the pipe, the push rod activates the jack assembly to push the second movable rubber plug, thereby indirectly pushing the first movable rubber plug.

[0061] In this embodiment, the pipeline is divided into three unconnected sections by a first movable rubber plug and a second movable rubber plug. These three sections are: the pipeline area where the conical surface of the first movable rubber plug is located, the pipeline area between the first and second movable rubber plugs, and the pipeline area between the second movable rubber plug and the pipeline port. Within the pipeline area where the conical surface of the first movable rubber plug is located, a temporarily installed, removable water injection component softens the dirt and grime adhering to the inside of the pipeline. Pressure is injected between the first and second movable rubber plugs using a pressurizing component, and a push rod is used to press against the back of the second movable rubber plug. As the air pressure between the first and second movable rubber plugs gradually increases, the first movable rubber plug moves towards the area where the sludge in the pipeline is located.

[0062] In addition, if the air pressure is insufficient to move the first movable rubber stopper forward, the jack assembly is used to forcibly push the second movable rubber stopper forward, compressing air to increase the external force for the first movable rubber stopper to move forward.

[0063] Based on the above measures, the following effects are achieved:

[0064] 1. It can be better applied to the dredging of parabolic and curved pipelines; it has the advantage of effectively solving the problem of dredging curved pipelines by pipe jacking; it is simple to operate, safe and efficient in pipeline dredging work, and has obvious economic benefits.

[0065] 2. Because the first movable rubber plug fits against the inner wall of the pipe, this device pushes the first movable rubber plug through the pipe to unclog it once, which can achieve the effect of thoroughly cleaning the pipe debris. The unclogging work is highly efficient and effective; and the pipe will not be damaged during the unclogging process.

[0066] 3. This device can be reused multiple times and has stable performance.

[0067] Example 2

[0068] The structure and principle of Example 2 are similar to those of Example 1, except that: a preferred water injection component structure is provided, but the water injection component structure is not limited to the following structure and can be changed according to requirements, as long as it can be detachably connected to the first movable rubber stopper.

[0069] Specifically, the water injection assembly includes a water injection pump 4-2 connected to an external water source, and a conduit 4-3 connecting the water injection pump and the water injection hole. One end of the conduit is connected to the water injection pump, and the other end of the conduit is connected to the water injection hole in a detachable manner. A valve is provided in the water injection hole, and the valve is opened when the conduit is connected to the water injection hole.

[0070] Example 3

[0071] The structure and principle of Example 3 are similar to those of Example 1. The difference is that a preferred structure of the pressurizing component is given, but the structure of the pressurizing component is not limited to the following structure. It can be changed according to the requirements, as long as it can be detachably connected to the second movable rubber plug.

[0072] Specifically, the pressurization assembly includes an air booster pump 5-3 and an air pipe 5-4 connecting the air booster pump and the pressurization port. One end of the air pipe is connected to the air booster pump, and the other end of the air pipe is detachably connected to the pressurization port. Valves are provided on both the pressurization port and the pressure relief port. The pressurization port valve opens when the conduit is connected to the water injection port, and the pressure relief port valve opens when the jack assembly has finished lifting and retracted.

[0073] Example 4

[0074] The structure and principle of Example 4 are similar to those of Example 1, except that: a preferred structure of the jack assembly is given, but the structure of the jack assembly is not limited to the following structure and can be changed according to requirements, as long as it can drive the jack rod to move in the direction of the pipeline.

[0075] Specifically, the jack assembly includes a back wall 6-1 fixed to the outer side of the pipe port, a jack 6-2 with the jacking direction parallel to the pipe jack rod, and a jacking iron 6-3 located between the jack and the jack rod. One end of the jack is fixed to the back wall, the other end of the jack is fixed to the jacking iron, and the jack rod is fixed to the other end of the jacking iron.

[0076] Example 5

[0077] The structure and principle of Embodiment 5 are similar to those of Embodiments 1-4, except that a traction rope assembly 8 is added in the above embodiments. The traction rope assembly has two functions: first, when the first movable rubber plug cannot move forward normally under the action of the pressurizing assembly and the jack assembly, the traction rope assembly pulls out the first movable rubber plug; second, by observing the forward speed, distance and other parameters of the first movable rubber plug through the traction rope assembly, it can determine whether the first movable rubber plug is moving forward stably to clear the garbage in the pipe, and thus decide whether to restart the jack assembly to further force pressurize.

[0078] Specifically, it also includes a traction line assembly, a part of which is fixed to the top rod, and another part of which passes through the second movable rubber plug and is fixed to the non-conical surface of the first movable rubber plug. A sealing ring is provided where the second movable rubber plug passes through the traction assembly. The traction line assembly is capable of pulling the first movable rubber plug toward the pipe port.

[0079] Example 6

[0080] The structure and principle of Embodiment 6 are similar to those of Embodiment 5, except that: a preferred structure of the traction rope assembly is given, but the structure of the traction rope assembly is not limited to the following structure and can be changed according to requirements. It is only necessary to ensure that one end of the traction rope assembly is fixed to the outside of the pipe (for example, the traction coil is fixed to the top iron or the external ground), the middle part passes through the second movable rubber plug, and the other end is fixed to the first movable rubber plug, and passing through the two movable rubber plugs does not affect the airtightness between the first and second movable rubber plugs.

[0081] Specifically, the traction rope assembly includes a traction rope connecting device 8-1 fixed to the end face of the first movable rubber plug near the second movable rubber plug, a traction coil 8-2 fixed to the top rod, and a traction rope 8-3 connecting the traction rope connecting device and the traction coil. One end of the traction rope is fixed to the traction rope connecting device, and the second movable rubber plug has a through hole 8-4 for the traction rope to pass through. A removable and washable sealing structure 8-5 is provided in the through hole. The middle part of the traction rope passes through the through hole, and the other end of the traction rope is fixed to the traction coil. By opening the sealing structure in the through hole and rotating the traction coil, the first movable rubber plug is pulled towards the pipe port.

[0082] In this embodiment, the preferred traction reel includes a drum and a throttle. The drum is mounted on a top rod via a bearing, and the throttle is located on the end face of the drum away from the top rod, with the throttle positioned at the axis of the drum. The end of the traction rope is fixedly wound around the drum.

[0083] like Figure 10-11 As shown, the present invention also provides a construction method for using pneumatic equipment for pipeline dredging.

[0084] Example 1

[0085] Includes the following steps:

[0086] S1: Check whether a certain length of the airbag detection pipe port is unobstructed. If it is unobstructed, proceed to the next step. If it is not unobstructed, manually remove silt and other debris from the area to ensure it is unobstructed. The length of this area is generally selected as 0.5m-1.5m. In the example shown in the figure, 1m is selected. Check that the necessary accessories for starting the equipment are complete.

[0087] S2: Install the first movable rubber stopper and the water injection assembly, and immerse the inner pipe of the first movable rubber stopper with water. During this process, apply lubricant to the contact surface between the first movable rubber stopper and the pipe; and temporarily fix the first movable rubber stopper inside the pipe to prevent it from slipping out. The water injection assembly injects water into the inner pipe through the water injection hole on the first movable rubber stopper, and after the pipe is fully filled with water, immerse it for 1-2 hours.

[0088] S3: Remove the water injection assembly, then install the second movable rubber plug, the pressurization assembly, and the jack assembly and jack rod. When installing the second movable rubber plug, remove the temporary fixing structure of the first movable rubber plug and use the temporary fixing structure to secure the second rubber plug in its position within the pipe. Then install the jack assembly and jack rod. After the jack assembly and jack rod are installed, the temporary fixing device can be removed. Finally, complete the installation of the pressurization assembly.

[0089] S4: Inject pressure between the first and second movable rubber plugs to push the first movable rubber plug forward into the pipe.

[0090] S5: The first movable rubber plug is pushed out from the other end of the pipe. All components are removed and the cleaning operation is completed. After the pipe is cleared, the first and second movable rubber plugs are removed, and the plugs are cleaned for future use. The blockage inside the pipe is collected and disposed of according to local environmental regulations.

[0091] Example 2

[0092] The structure and principle of Example 2 are similar to those of Example 1, except that: due to water immersion, the debris in the pipe cannot be completely softened; and as the first movable rubber stopper moves forward in the pipe, debris accumulates at the front of the first movable rubber stopper, generating significant resistance. Based on these two situations, there is a possibility that the injection pressure from the pressurizing component may not be sufficient to push the first movable rubber stopper forward.

[0093] Therefore, step SA is added between steps S4 and S5. In step SA, the forward speed and distance of the first movable rubber plug are observed through the traction rope assembly to determine whether the operation of the first movable rubber plug is smooth. If the first movable rubber plug moves forward steadily and clears the pipe, the process transitions directly from step S4 to S5. If the first movable rubber plug stops moving forward or moves forward abnormally slowly after the pressurizing assembly pressurizes it for a long time, the pressurizing assembly stops the pressurization operation and closes the pressurizing hole. The first movable rubber plug moves forward steadily by repeatedly pressurizing it through the jack assembly.

[0094] Specifically, step SA includes the following steps:

[0095] SA1: Close the booster assembly and the valves of the booster port and the pressure relief port;

[0096] SA2: The jack assembly moves upward toward the inside of the pipe, pushing the second movable rubber plug and the first movable rubber plug together to move toward the inside of the pipe via the jack rod;

[0097] SA3: After the jack assembly is raised to its maximum stroke, the pressure relief hole is opened, and the jack assembly retracts.

[0098] SA4: After the jack assembly retracts to its minimum size, close the pressure relief hole and open the pressure boosting hole. The pressure boosting assembly will continue to inject pressure.

[0099] SA5: If the first movable rubber plug still moves forward abnormally, repeat steps SA1-SA5 until the first movable rubber plug is pushed out from the other end of the pipe; if the first movable rubber plug moves forward smoothly, the pressurizing component continues to inject pressure until the first movable rubber plug is pushed out from the other end of the pipe.

[0100] The above are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent changes made in accordance with the claims of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A construction method for using pneumatic equipment to dredge pipelines, characterized in that: A pneumatic construction device for pipe dredging; the pneumatic construction device for pipe dredging includes... The movable rubber plug consists of a first movable rubber plug located on the inner side of the pipe and a second movable rubber plug located on the outer side of the pipe. The maximum cross-sectional dimensions of the first and second movable rubber plugs are matched with the inner diameter of the pipe. The first and second movable rubber plugs divide the pipe into three non-connected cavities. A tapered surface structure is provided on the end face of the first movable rubber plug away from the second movable rubber plug. The water injection assembly has a water injection hole that passes through the first movable rubber plug on the side near the pipe port. When the first movable rubber plug has been installed, the water injection assembly is connected to the water injection hole in a detachable manner. Before the second movable rubber plug is installed, the water injection assembly is removed and the water injection hole is blocked. The pressurizing component has a pressurizing hole and a pressure relief hole on the side of the second movable rubber plug near the pipe port, which penetrate the second movable rubber plug. The pressurizing component is connected to the pressurizing hole, and the pressure relief hole is blocked. The pressurizing component increases the air pressure between the first and second movable rubber plugs, thereby pushing the second movable rubber plug in the pipe. The jack assembly and the push rod are included. The jack assembly is fixed to the outside of the pipe port. One end of the push rod is fixed to the jack assembly, and the other end of the push rod is detachably fixed to the end face of the second movable rubber plug. The push rod restricts the movement of the first movable rubber plug toward the pipe port. When the pressurization assembly cannot push the first movable rubber plug to move inside the pipe, the push rod activates the jack assembly to push the second movable rubber plug, indirectly achieving the pushing of the first movable rubber plug. The construction method includes the following steps: S1: Check if a certain length of area at the pipe end is unobstructed. If it is unobstructed, proceed to the next step. If it is not unobstructed, clean the area. S2: Install the first movable rubber plug and water injection assembly, and inject water into the inner pipe of the first movable rubber plug for immersion; S3: Remove the water injection assembly, and then install the second movable rubber plug, the pressurization assembly, the jack assembly, and the jack rod; S4: Inject pressure between the first and second movable rubber plugs to push the first movable rubber plug forward into the pipe; S5: The first movable rubber plug is pushed out from the other end of the pipe, and the components are removed and the cleaning operation is completed.

2. The construction method for using pneumatic equipment for pipeline dredging according to claim 1, characterized in that: A step SA is added between steps S4 and S5. In step SA, it is determined whether the first movable rubber plug is moving smoothly. If the first movable rubber plug moves forward steadily and clears the pipe, the process transitions directly from step S4 to S5. If the pressurizing component pressurizes the first movable rubber plug for a long time and it stops moving forward or moves forward at an abnormally slow speed, the pressurizing component stops the pressurizing operation and closes the pressurizing hole. The first movable rubber plug is then pressed forward steadily by the jack component.

3. The construction method for using pneumatic equipment for pipeline dredging according to claim 2, characterized in that: Step SA specifically includes the following steps: SA1: Close the booster assembly and the valves of the booster port and the pressure relief port; SA2: The jack assembly moves upward toward the inside of the pipe, pushing the second movable rubber plug and the first movable rubber plug together to move toward the inside of the pipe via the jack rod; SA3: After the jack assembly is raised to its maximum stroke, the pressure relief hole is opened, and the jack assembly retracts. SA4: After the jack assembly retracts to its minimum stroke, close the pressure relief hole and open the pressure boosting hole, and the pressure boosting assembly continues to inject pressure; SA5: If the first movable rubber plug still moves forward abnormally, repeat steps SA1-SA5 until the first movable rubber plug is pushed out from the other end of the pipe; if the first movable rubber plug moves forward smoothly, the pressurizing component continues to inject pressure until the first movable rubber plug is pushed out from the other end of the pipe.

4. The construction method for using pneumatic equipment for pipeline dredging according to claim 1, characterized in that: The water injection assembly includes a water injection pump connected to an external water source, and a conduit connecting the water injection pump and the water injection hole. One end of the conduit is connected to the water injection pump, and the other end of the conduit is detachably connected to the water injection hole. A valve is provided inside the water injection hole, and the valve is opened when the conduit is connected to the water injection hole.

5. The construction method for using pneumatic equipment for pipeline dredging according to claim 1, characterized in that: The pressurization assembly includes an air booster pump and an air pipe connecting the air booster pump and the pressurization port. One end of the air pipe is connected to the air booster pump, and the other end of the air pipe is detachably connected to the pressurization port. Valves are provided on both the pressurization port and the pressure relief port. The valve on the pressurization port opens when the conduit is connected to the water injection port, and the valve on the pressure relief port opens when the jack assembly has finished lifting and retracted.

6. The construction method for using pneumatic equipment for pipeline dredging according to claim 1, characterized in that: The jack assembly includes a jack fixed to the outer back wall of the pipe port, a jack with the jacking direction parallel to the pipe jack rod, and a jacking iron located between the jack and the jack rod. One end of the jack is fixed to the back wall, the other end of the jack is fixed to the jacking iron, and the jack rod is fixed to the other end of the jacking iron.

7. The construction method for using pneumatic equipment for pipeline dredging according to any one of claims 1-6, characterized in that: The pneumatic equipment used for pipeline dredging construction device also includes a traction line assembly. A part of the traction line assembly is fixed to the top rod, and another part of the traction line assembly passes through the second movable rubber plug and is fixed on the non-conical surface of the first movable rubber plug. A sealing ring is provided where the second movable rubber plug passes through the traction assembly. The traction line assembly is capable of pulling the first movable rubber plug toward the pipeline port.

8. The construction method for using pneumatic equipment for pipeline dredging according to claim 7, characterized in that: The traction rope assembly includes a traction rope connecting device fixed to the end face of the first movable rubber plug near the second movable rubber plug, a traction coil fixed to the top rod, and a traction rope connecting the traction rope connecting device and the traction coil. One end of the traction rope is fixed to the traction rope connecting device, and the second movable rubber plug has a through hole for the traction rope to pass through. The through hole has a removable and washable sealing structure. The middle part of the traction rope passes through the through hole, and the other end of the traction rope is fixed to the traction coil. By opening the sealing structure in the through hole and rotating the traction coil, the first movable rubber plug is pulled towards the pipe port.

9. The construction method for using pneumatic equipment for pipeline dredging according to claim 8, characterized in that: The traction reel includes a drum and a throttle. The drum is mounted on a top rod via a bearing, and the throttle is located on the end face of the drum away from the top rod, with the throttle positioned at the axis of the drum. The end of the traction rope is fixedly wound around the drum.

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