Temporary plugging device for PVC (polyvinyl chloride) drainage pipe
By designing a temporary plugging device for PVC drainage pipes, and utilizing a combination of U-shaped clamps and annular airbags, the sealing problem during water-bearing maintenance was solved, achieving efficient water resource utilization and simplifying the construction process.
Patent Information
- Application Number
- CN202520826355.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-28
AI Technical Summary
Existing technologies cannot effectively seal PVC drainage pipes when they need to be repaired while the pipes are wet, leading to water waste and increased construction complexity during the repair process.
A temporary plugging device for PVC drain pipes is designed, including a U-shaped clamp, a lifting assembly, an annular airbag, and a guide rod. The airbag is inflated to achieve a seal, and the U-shaped clamp is fixed at the inspection port. The annular airbag is pressed tightly against the inner wall of the drain pipe to form a sealed structure.
It achieves effective sealing of drainage pipes during water-based maintenance, reducing water waste and construction complexity, and improving maintenance efficiency.
Smart Images
Figure CN223881986U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of drainage pipe maintenance, especially relates to a PVC drainage pipe temporary plugging device. BACKGROUND
[0002] Drainage pipeline can have various problems after long-term operation, such as water leakage, blockage, leakage and the like, therefore, a tee joint maintenance opening is generally reserved in the drainage pipeline, and the setting of the maintenance opening can facilitate the troubleshooting of problems and rapid maintenance. However, water is needed for maintenance in some special cases. In view of this situation, a PVC drainage pipe temporary plugging device arranged at the maintenance opening is designed. CONTENT OF THE UTILITY MODEL
[0003] The utility model discloses a PVC drainage pipe temporary plugging device arranged at the maintenance opening.
[0004] The utility model discloses a PVC drainage pipe temporary plugging device, which is characterized by comprising two symmetrical U-shaped clamping pieces, two U-shaped clamping pieces are connected through horizontal boards, the lower portion of the horizontal board is fixedly provided with a guide rod, the guide rod is sleeved with a lifting assembly, the lifting assembly is fixedly provided with a circular bottom plate, the circular bottom plate is provided with a sleeve pipe, the sleeve pipe is inserted with an inner rod, the lower end of the inner rod is arranged in the sleeve pipe through a spring, and the upper end of the inner rod is fixedly provided with a circular top plate.
[0005] An annular air bag is arranged between the circular bottom plate and the circular top plate, the inner diameter of the annular air bag is less than the outer diameter of the circular bottom plate and the circular top plate, the lower portion of the annular air bag is provided with an air pipe extending out of the maintenance opening, and a valve is arranged on the air pipe.
[0006] Further, the circular bottom plate, the circular top plate, the sleeve pipe and the inner rod are concentrically arranged.
[0007] Further, the lifting assembly comprises a plurality of ring sleeves sleeved on the guide rod, the ring sleeves are fixedly connected through connecting plates, the connecting plates are provided with connecting rods extending into the drainage pipe from the maintenance opening, one end of the connecting rod extending into the drainage pipe is fixedly provided with an upward vertical rod, and the circular bottom plate is fixedly arranged at the top end of the vertical rod.
[0008] Further, the outer ends of the two connecting rods are fixedly provided with limiting rods.
[0009] Further, the connecting plates are provided with guide holes, the connecting rods are slidingly arranged in the guide holes, and sliding the connecting rods can make the circular bottom plate and the drainage pipe be in a concentric state.
[0010] Further, at least one of the ring sleeves is provided with a screw for tightening the inner rod by screwing.
[0011] Further, the guide rod is provided with at least two and the lower end is connected by a fixing plate.
[0012] Further, the U-shaped clamping piece can be provided with a locking screw by screwing, and the U-shaped clamping piece generally comprises two side plates and an end plate connecting the side plates.
[0013] Usage: open the manhole, and extend the circular bottom plate, the annular air bag and one end of the circular top plate into the drain pipe from the manhole, and clamp the two U-shaped clamping pieces on the outer wall of the manhole, slide the connecting rod to make the annular air bag extend into the drain pipe, start the air pump to inflate the air bag, and the annular air bag stretches the spring in the deformation process, so that the circular bottom plate and the circular top plate are tightly attached to the annular air bag, and the outer wall of the annular air bag is tightly attached to the inner wall of the drain pipe to achieve sealing.
[0014] The technical scheme provided by the embodiment of the utility model has the beneficial effects that the PVC drain pipe temporary blocking device is arranged at the manhole. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the utility model, the drawings used in the embodiment will be briefly introduced as follows, and obviously, the drawings listed below are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.
[0016] Figure 1 It is the overall structure schematic diagram of the embodiment of the utility model;
[0017] Figure 2 It is the structure schematic diagram after the annular air bag and the sleeve pipe are cut open;
[0018] Figure 3 It is the structure schematic diagram of the U-shaped clamping piece and its related parts;
[0019] Figure 4 It is the reference diagram in the use state (the drain pipe is cut open).
[0020] In the drawings, the component list represented by each mark is as follows: 1, U-shaped clamping piece;2, horizontal plate;3, ring sleeve;4, connecting plate;5, connecting rod;6, guide rod;7, fixing plate;8, vertical rod;9, circular bottom plate;10, annular air bag;11, circular top plate;12, spring;13, drain pipe;14, manhole;501, limiting rod;901, sleeve pipe;1101, inner rod. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with embodiments.
[0022] Referring to Figures 1-4 A PVC drainage pipe temporary plugging device, characterized in that it comprises two symmetrically arranged U-shaped clamping pieces 1, two U-shaped clamping pieces 1 are connected through a horizontal plate 2, a guide rod 6 is fixedly arranged below the horizontal plate 2, a lifting assembly is sleeved on the guide rod 6, a circular bottom plate 9 is fixedly arranged on the lifting assembly, a sleeve 901 is arranged on the circular bottom plate 9, an inner rod 1101 is inserted into the sleeve 901, the lower end of the inner rod 1101 is arranged in the sleeve 901 through a spring 12, and a circular top plate 11 is fixedly arranged at the upper end of the inner rod 1101.
[0023] An annular air bag 10 is arranged between the circular bottom plate 9 and the circular top plate 11, the inner diameter of the annular air bag 10 is smaller than the outer diameter of the circular bottom plate 9 and the circular top plate 11, a gas pipe is arranged at the lower part of the annular air bag 10 and extends out of the manhole 14, and a valve is arranged on the gas pipe.
[0024] The circular bottom plate 9, the circular top plate 11, the sleeve 901 and the inner rod are concentrically arranged.
[0025] The lifting assembly comprises a plurality of ring sleeves 3 sleeved on the guide rod 6, the ring sleeves 3 are fixedly connected through a connecting plate 4, the connecting plate 4 is provided with a connecting rod 5 extending into the drainage pipe 13 from the manhole 14, an upward vertical rod 8 is fixedly arranged at the end of the connecting rod 5 extending into the drainage pipe 13, and the circular bottom plate 9 is fixedly arranged at the top end of the vertical rod 8.
[0026] Limit rods 501 are fixedly arranged at the outer ends of the two connecting rods 5.
[0027] The connecting plate 4 is provided with a guide hole, the connecting rod 5 is slidingly arranged in the guide hole, and the sliding connecting rod 5 can make the circular bottom plate 9 and the drainage pipe 13 concentric.
[0028] At least one ring sleeve 3 is provided with a screw for tightening the inner rod through threaded connection.
[0029] The guide rod 6 is provided with at least two guide rods and the lower ends of the guide rods are connected through a fixed plate 7.
[0030] The U-shaped clamping piece 1 can be provided with a locking screw through threaded connection.
[0031] Usage: open the access hole 14, extend the circular bottom plate 9, the annular air bag 10 and one end of the circular top plate 11 into the drain pipe 13 from the access hole 14, and make the two U-shaped clamps 1 clamp on the outer wall of the access hole 14, slide the connecting rod 5 to make the annular air bag 10 extend into the drain pipe 13, start the air pump to inflate the air bag, the annular air bag 10 stretches the spring 12 in the deformation process, so that the circular bottom plate 9 and the circular top plate 11 are tightly attached to the annular air bag 10, and the outer wall of the annular air bag 10 is tightly attached to the inner wall of the drain pipe 13, thereby realizing sealing.
[0032] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A PVC drain pipe temporary plugging device, characterized in that, The utility model provides a kind of lifting device for manhole, including two symmetrically arranged U-shaped clamps, two the U-shaped clamps are connected by horizontal plate, the lower part of the horizontal plate is fixedly provided with guide rod, guide rod is sleeved with lifting assembly, lifting assembly is fixedly provided with circular bottom plate on it, circular bottom plate is provided with sleeve, inner rod is inserted in the sleeve, the lower end of inner rod is arranged in the sleeve by spring, the upper end of inner rod is fixedly provided with circular top plate. Circular bottom plate and circular top plate are provided with annular air bag between, the inner diameter of annular air bag is less than the outer diameter of circular bottom plate and circular top plate, the lower part of annular air bag is provided with air pipe that stretches out from manhole, valve is provided on air pipe.
2. The PVC drain pipe temporary plugging device according to claim 1, characterized in that, Circular bottom plate, circular top plate, sleeve and inner rod are concentrically arranged.
3. The PVC drain pipe temporary plugging device according to claim 1, characterized in that, Lifting assembly includes several rings that are sleeved on the guide rod, the rings are fixedly connected by connecting plate between, connecting plate is provided with connecting rod that stretches into drain pipe from manhole, the end of connecting rod that stretches into drain pipe is fixedly provided with upward vertical rod, circular bottom plate is fixedly arranged at the top of vertical rod.
4. The PVC drain pipe temporary plugging device according to claim 3, characterized in that, Connecting plate is provided with guide hole, connecting rod is slidably arranged in the guide hole, sliding connecting rod can make circular bottom plate and drain pipe concentric.
5. The PVC drain pipe temporary plugging device according to claim 3, characterized in that, At least one of the rings is provided with a screw for tightening the inner rod by screw connection.
6. The PVC drain pipe temporary plugging device according to claim 3, characterized in that, The guide rod is provided with at least two and the lower end is connected by a fixed plate.