A municipal sewer pipe well upper distal plugging device

Abstract

The utility model discloses a kind of municipal drainage pipeline well upper far-end plugging devices, including sleeve, baffle, backplate, triangular fixed frame and force transmission rod, the sleeve front end is equipped with conical rubber sealing plug, the baffle is fixedly connected with sleeve by flange ring, the triangular fixed frame is composed of force transmission base and triangular fixed rod, the force transmission base is fixedly connected with backplate and baffle by triangular fixed rod, rotating seat is fixed on the force transmission base, the force transmission rod is rotatably connected with rotating seat, compared with prior art, the utility model, realize well operation completely, completely avoid personnel downhole to carry out limited space operation, eliminate air bag explosion risk, greatly improve operation safety, conical rubber sealing area forms self-tightening structure under the action of water pressure, more impact more fit, plugging strength and stability far exceed air bag, device adaptability is strong, deployment and disassembly speed is fast, plugging operation time is significantly shortened, realize quick splicing and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction, and in particular to a remote sealing device for municipal drainage pipeline wells. Background Technology

[0002] In current municipal drainage pipeline maintenance work, airbag sealing technology is widely used. The principle is to use an air compressor to inflate a rubber airbag placed inside the pipeline, causing it to expand and fit tightly against the pipe wall, relying on friction to achieve fixation.

[0003] This technology has significant drawbacks:

[0004] High risk: This operation requires divers to descend into the well to assist in placing the airbag, making it a high-risk operation in a confined space. If there are sharp objects on the inner wall of the pipe, the airbag could easily rupture and explode, seriously threatening the safety of the workers.

[0005] High cost: The airbag itself is expensive, and the frequent inflation and deflation operations and potential damage risk increase the overall cost of use.

[0006] Low efficiency: To meet safety regulations, the effective construction time is greatly reduced, which seriously affects the progress of the project.

[0007] Therefore, there is an urgent need for a new type of sealing device that does not require personnel to go down into the well, can be operated remotely from the well, and is simultaneously capable of rapid deployment, reliable sealing, and economical reusability, in order to resolve the technical contradiction that existing technologies cannot simultaneously address the issues of "safety, efficiency, and cost". Utility Model Content

[0008] The purpose of this utility model is to provide a remote sealing device for municipal drainage pipeline wells, which fundamentally solves the problem that existing technologies cannot solve, requiring manual entry into confined spaces and bearing high operational risks.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: a remote sealing device for municipal drainage pipeline manholes, comprising a sleeve, a baffle, a back plate, a triangular fixing frame, and a force transmission rod. The sleeve has a conical rubber sealing plug at its front end and a flange ring at its rear end. The baffle is located on the front of the back plate and is fixedly connected to the sleeve through the flange ring. The triangular fixing frame is located on the back of the back plate and consists of a force transmission base and a triangular fixing rod. The force transmission base is fixedly connected to the back plate and the baffle through the triangular fixing rod. A rotating seat is fixedly mounted on the force transmission base, and the force transmission rod is rotatably connected to the rotating seat.

[0010] Preferably, the sleeve is configured with multiple sets of sleeves of different diameters according to different drainage pipes, and each set of sleeves is configured with a matching baffle, which is set on the back plate.

[0011] Preferably, the baffle is provided with a flange hole that matches the flange ring of the sleeve.

[0012] Preferably, the lower ends of the baffles are rotatably connected to the lower part of the back plate via a rotating shaft, and the upper ends of the baffles are provided with screw holes and are detachably connected to the upper part of the back plate via positioning bolts.

[0013] Preferably, there are three triangular fixing rods, all of which are fixed to the force transmission base and are distributed in a Y-shape. The front ends of the triangular fixing rods are fixedly connected to the back plate and the baffle respectively by fastening screws.

[0014] Preferably, a hoisting gap is left between the front end of the triangular fixing rod and the back plate.

[0015] Preferably, the force transmission rod is a detachable structure composed of multiple adjustable force transmission rods. One end of each adjustable force transmission rod has an external adjusting thread, and the other end has an internal adjusting thread. The adjustable force transmission rods are connected by the external adjusting thread and the internal adjusting thread for rotational connection.

[0016] Preferably, the sleeve, baffle, and back plate are all made of polyethylene material.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] (1) Intrinsic safety: It fully realizes surface operation, completely avoids personnel going down into the well to work in confined spaces, eliminates the risk of airbag explosion, and greatly improves the safety of operation.

[0019] (2) Reliable sealing: The device can be installed in the direction of pipe flow. When water flows, the water pressure acts on the baffle and sleeve, making them fit more tightly against the pipe wall of the municipal pipeline, and the sealing effect is more stable. The conical rubber sealing area forms a self-tightening structure under the action of water pressure, and the more impacted it is, the tighter it fits. The sealing strength and stability far exceed those of the airbag.

[0020] (3) High efficiency and convenience: The modular design is adopted. Through multi-diameter baffles, adjustable sleeves, and detachable force transmission rods, the device is highly adaptable, and the deployment and disassembly speed is fast, which significantly shortens the sealing operation time and realizes rapid splicing and disassembly. The deployment time is shortened by more than 50% compared with the traditional airbag method.

[0021] (4) Economical and practical: The main body is made of polyethylene and steel, with a simple structure and a manufacturing cost far lower than that of airbags; it is reusable, and the average service time is increased by more than 3 times, which greatly reduces construction costs.

[0022] (5) High adaptability: By replacing the baffle and sleeve, it can be compatible with various pipe diameters from DN300 to DN600, which can meet the sealing needs under different engineering conditions.

[0023] (6) Easy to operate: The lever principle (force transmission rod) is used for prying operation, and a single person can complete the sealing deployment, which reduces labor costs and saves labor and is efficient. Attached Figure Description

[0024] Figure 1 This is a front structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0026] Figure 3 This is a partial structural diagram of the force transmission base of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the sleeve of this utility model;

[0028] Figure 5 This is a schematic diagram of the storage structure of the baffle when it is not in use.

[0029] Figure 6 This is a diagram showing the on-site installation and usage environment of this utility model.

[0030] In the diagram: 1. Sleeve; 2. Baffle; 3. Back plate; 4. Force transmission rod; 5. Triangular fixing bracket; 51. Force transmission base; 52. Triangular fixing rod; 53. Rotating seat; 6. Rubber sealing plug; 7. Rotating shaft; 8. Fastening screw; 9. Flange hole; 10. Screw hole; 11. Flange ring; 12. Well ring; 13. Ladder; 14. Well cover. Detailed Implementation

[0031] Example: A remote sealing device for municipal drainage pipe manholes, see [link / reference] Figures 1 to 4The device includes a sleeve 1, a baffle 2, a back plate 3, a triangular fixing bracket 5, and a force transmission rod 4. The sleeve 1 has a conical rubber sealing plug 6 at its front end and a flange ring 11 at its rear end. The baffle 2 is located on the front of the back plate 3 and is fixedly connected to the sleeve 1 via the flange ring 11. The triangular fixing bracket 5 is located on the back of the back plate 3 and consists of a force transmission base 51 and a triangular fixing rod 52. The force transmission base 51 is fixedly connected to the back plate 3 and the baffle 2 via the triangular fixing rod 52. A rotating seat 53 is fixedly mounted on the force transmission base 51, and the force transmission rod 4 is rotatably connected to the rotating seat 53. This invention enables rapid, safe, and stable sealing of the far end of municipal pipelines without entering a confined space, fundamentally solving the problem of high-risk operations requiring manual entry into confined spaces, a problem that existing technologies cannot address. The innovative integration of multiple baffles (2), multiple sleeves (1), conical rubber seals, and detachable force transmission rods (4 levers) increases downhole versatility and addresses a range of functional challenges that traditional technologies could not solve, including impact resistance, storage, leak prevention, remote operation, labor saving, and safety. The modular design enhances the device's adaptability, enabling rapid deployment and dismantling, significantly reducing sealing operation time and allowing for quick assembly and disassembly. Deployment time is reduced by more than 50% compared to traditional pneumatic methods. Compared to existing technologies, it offers significant improvements in safety, reliability, efficiency, economy, and ease of operation, finding a balance in the safety-efficiency-cost triangle.

[0032] The sleeve 1 is configured with multiple sets of sleeves 1 of different diameters according to different drainage pipes. Each set of sleeves 1 is equipped with a matching baffle 2, which is set on the back plate 3. This utility model is equipped with four stackable sleeves 1 (each 300mm in length) with an inner diameter slightly smaller than the nominal diameter of the target pipe (DN300, DN400, DN500 or DN600) according to the pipe diameter to be sealed. The sleeves 1 of different sizes can be stacked to achieve the goal of portability and small footprint. At the front end of the sleeve 1 inserted into the pipe, a 10cm long rubber sealing plug 6 is heat-fused. The sealing plug is generally conical, with a thinner front end (insertion end) (about 0.5mm) and a thicker rear end (near the main body of the sleeve 1) (about 1.5mm). The baffle 2 has a flange hole 9 that matches the flange ring 11 of the sleeve 1, so that it can be adapted to sleeves 1 of different diameters.

[0033] The lower ends of each baffle 2 are rotatably connected to the lower part of the back plate 3 via a rotating shaft 7. The upper ends of each baffle 2 are provided with screw holes 10 and are detachably connected to the upper part of the back plate 3 via positioning bolts. The rotating shaft 7 allows the lower part of the back plate 3 to rotate, and the positioning bolts allow the baffle 2 to be stored. When stored, all baffles 2 can be retracted, reducing the footprint. (See [reference]). Figure 4When selecting and using baffle 2, simply remove the positioning bolts at the top of the multi-diameter baffle 2 assembly, select the baffle 2 of the corresponding size from the baffles 2 with different flange holes 9, and rotate it downwards. The remaining unused baffles 2 are fixed on top by the positioning bolts to increase the overall weight and enhance the anti-buoyancy stability of the device under water flow impact.

[0034] There are three triangular fixing rods 52, all of which are fixed to the force transmission base 51 and are distributed in a Y-shape. The front ends of the triangular fixing rods 52 are fixedly connected to the back plate 3 and the baffle 2 respectively by fastening screws 8. The Y-shaped triangular fixing rod structure can provide good support for the back plate 3 and the baffle 2. When the back plate 3 is pried up by the force transmission rod 4, the force can be well transmitted to the entire device.

[0035] A hoisting gap is left between the front end of the triangular fixing rod 52 and the back plate 3 to facilitate the hoisting of the entire device and make sealing operations easier.

[0036] The force transmission rod 4 is a detachable structure, consisting of multiple adjustable force transmission rods 4. One end of each adjustable force transmission rod 4 has an external adjusting thread (male connector), and the other end has an internal adjusting thread (female connector). The adjustable force transmission rods 4 are connected by the external and internal adjusting threads. By assembling multiple adjustable force transmission rods 4, the system can adapt to different wellbore depth requirements.

[0037] As a preferred option, the sleeve 1, baffle 2, and back plate 3 are all made of polyethylene material, which has a manufacturing cost far lower than that of airbags, can be reused, and increases the average service life by more than 3 times, thus significantly reducing construction costs.

[0038] The construction and usage method of this utility model is as follows, see below. Figure 6 :

[0039] 1. Select baffle 2: Remove the positioning bolts at the top of the multi-diameter baffle 2 assembly, select the baffle 2 of the corresponding size from the multi-diameter baffle 2, and rotate it downwards.

[0040] 2. Install sleeve 1: Select sleeve 1 with a matching inner diameter according to the pipe diameter to be sealed (DN300, DN400, DN500 or DN600). Align the flange ring 11 on sleeve 1 with the corresponding flange hole 9 of the selected baffle 2, and use M8 bolts to fasten sleeve 1 and baffle 2.

[0041] 3. Install the triangular fixing rod 52: Each of the three ends of the triangular fixing rod 52 is welded with a 12cm long M8 screw rod, and a force transmission base 51 is welded at the center intersection. The two upper triangular fixing rods 52 are fixed to the back plate 3 by fastening screws 8, and the lower triangular fixing rod 52 is fixed to the screw hole 10 of the rotating baffle 2 by fastening screws 8.

[0042] 4. Assemble the force transmission rod 4: The force transmission rod 4 is made of steel pipe and is designed to be detachable. One end of the rod has an external thread (male connector), and the other end has an internal thread (female connector). By screwing the male and female connectors together, the length of the force transmission rod 4 can be flexibly adjusted to adapt to well chambers of different depths.

[0043] 5. Connecting the force transmission rod 4: Screw the female connector of the connector head to the male connector of the force transmission rod 4.

[0044] 6. Lowering and Positioning Device: Secure ropes as lifting points at the two screws at the upper end of the triangular fixing rod 52. Use the hand-held force transmission rod 4 to control the overall stability of the device and prevent rotation. Lower the device into the well chamber, ensuring that the bottom baffle 2 fits snugly against the U-shaped groove at the bottom of the well.

[0045] 7. Sealing Operation: Using the manhole ring 12 as a fulcrum and the force transmission rod 4 as a lever, pry the sleeve 1 into the target pipe. If the prying torque is insufficient, the force transmission rod 4 can be screwed on to extend it. After the sleeve 1 is fully inserted into the pipe, a few sections of the force transmission rod 4 can be disassembled to shorten the length, and a U-lock can be used to firmly fix the force transmission rod 4 to the ladder 13 in the manhole, completing the sealing. After covering the manhole with the manhole cover 14, traffic can be restored.

[0046] 8. Disassembly of the device: After the maintenance work is completed, loosen the U-lock and pry the transmission rod 4 in the opposite direction to remove the entire device from the pipe and well chamber.

[0047] The above provides a detailed description of a remote sealing device for municipal drainage pipe wells provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, based on the idea of ​​this utility model, there will be changes in the specific implementation and application scope. Changes and improvements to this utility model are possible without exceeding the concept and scope specified in the appended claims. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A device for sealing the distal end of a municipal drainage pipe well, characterized in that: The device includes a sleeve, a baffle, a back plate, a triangular fixing bracket, and a force transmission rod. The sleeve has a tapered rubber sealing plug at its front end and a flange ring at its rear end. The baffle is located on the front of the back plate and is fixedly connected to the sleeve via the flange ring. The triangular fixing bracket is located on the back of the back plate and consists of a force transmission base and a triangular fixing rod. The force transmission base is fixedly connected to the back plate and the baffle via the triangular fixing rod. A rotating seat is fixedly mounted on the force transmission base, and the force transmission rod is rotatably connected to the rotating seat.

2. The municipal drainage pipeline manhole remote sealing device according to claim 1, characterized in that: The sleeve is configured with multiple sets of sleeves of different diameters according to different drainage pipes. Each set of sleeves is equipped with a matching baffle, and the baffles are all set on the back plate.

3. The municipal drainage pipeline manhole remote sealing device according to claim 2, characterized in that: The baffle plate has flange holes that match the flange ring of the sleeve.

4. The municipal drainage pipeline manhole remote sealing device according to claim 2, characterized in that: The lower ends of the baffles are rotatably connected to the lower part of the back plate via rotating shafts, and the upper ends of the baffles are provided with screw holes and are detachably connected to the upper part of the back plate via positioning bolts.

5. A municipal drainage pipeline manhole remote sealing device according to claim 1, characterized in that: There are three triangular fixing rods, all of which are fixed to the force transmission base and are distributed in a Y-shape. The front ends of the triangular fixing rods are fixedly connected to the back plate and the baffle respectively by fastening screws.

6. A municipal drainage pipeline manhole remote sealing device according to claim 5, characterized in that: A hoisting gap is left between the front end of the triangular fixing rod and the back plate.

7. A municipal drainage pipeline manhole remote sealing device according to claim 1, characterized in that: The force transmission rod is a detachable structure, consisting of multiple adjustable force transmission rods. One end of each adjustable force transmission rod has an external adjusting thread, and the other end has an internal adjusting thread. The adjustable force transmission rods are connected by the external adjusting thread and the internal adjusting thread for rotational connection.

8. A municipal drainage pipeline manhole remote sealing device according to claim 1, characterized in that: The sleeve, baffle, and back plate are all made of polyethylene material.

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