Double-wall corrugated pipe well end water closing plugging device

Abstract

The utility model relates to a double-wall corrugated pipe well end portion closed water plugging device which comprises two arc-shaped hoops, a leakage-proof plate, a hollow shaft and a threaded rod, the two arc-shaped hoops are in butt joint to form an annular hoop, the outer ring side of each arc-shaped hoop extends in the axial direction to form an outer ring clamping edge, and the outer ring clamping edge is connected with the leakage-proof plate. Annular assembly intervals are reserved between the outer ring clamping edges of the two arc-shaped hoops and the outer side walls of the ends of the corrugated pipe, and inner threads are arranged on the inner ring side walls of the outer ring clamping edges; a circle of convex edge is arranged on one side face of the leakage-proof plate, a circle of external threads are arranged on the outer ring side wall of the convex edge, the convex edge is installed in the assembly interval in a matched mode, the inner ring side wall of the convex edge abuts against the outer side wall of the end of the corrugated pipe, and the outer ring side wall of the convex edge is in threaded connection with the internal threads of the inner ring side wall of the outer ring clamping edge through the external threads. The other side face of the leakage-proof plate is detachably connected with a hollow shaft, the free end of the hollow shaft is rotationally connected with a connecting sleeve, and the threaded rod is arranged in the hollow shaft in a sleeved mode and is in threaded connection with the connecting sleeve.

Description

Technical Field

[0001] The utility model belongs to the technical field of building design and construction, and specifically relates to a water-blocking and plugging device for the end of a double-wall corrugated pipe well. Background Art

[0002] Bellows mainly include metal bellows, bellows expansion joints, bellows heat exchange tubes, diaphragm boxes and metal hoses. Bellows are widely used in sewage drainage, compensation for pipeline thermal deformation, shock absorption, absorption of pipeline settlement deformation, etc. They are widely used in petrochemical, instrumentation, aerospace, chemical, electric power, cement, metallurgy and other industries. Corrugated tubes made of other materials such as plastics play an irreplaceable role in media transportation, power threading, machine tools, home appliances and other fields.

[0003] After the installation of the bellows is completed, it is necessary to seal its end and then conduct a water injection test for leak prevention. In the prior art, rubber airbags are mostly used to block the end of the bellows. However, this method has poor stability after installation for the bellows with smooth inner walls, and the rubber airbag is easy to slip out and leak. Therefore, it is necessary to design a water-blocking sealing device for the end of the double-walled corrugated pipe well. Utility Model Content

[0004] In order to solve one or more technical problems existing in the prior art, the utility model provides a water-blocking and plugging device for the end of a double-wall corrugated pipe well.

[0005] The utility model solves the above-mentioned technical problems with the following technical solutions: a water-blocking plugging device for the end of a double-walled corrugated pipe well, comprising two arc clamps, a leak-proof plate, a hollow shaft and a threaded rod, wherein the two arc clamps are butted to form a circular ring clamp, the outer ring side of the arc clamp is axially extended to form an outer ring clamp edge, an annular assembly interval is reserved between the outer ring clamp edges of the two arc clamps and the outer side wall of the end of the corrugated pipe, and an inner ring side wall of the outer ring clamp edge is provided with an internal thread; a side surface of the leak-proof plate is provided with a circle of convex edges, and the outer ring side wall of the convex edge is provided with a circle of external threads, the convex edge is adapted to be installed in the assembly interval, the inner ring side wall of the convex edge is abutted against the outer side wall of the end of the corrugated pipe, and the outer ring side wall of the convex edge is threadedly connected to the inner thread of the inner ring side wall of the outer ring clamp edge through an external thread; the other side surface of the leak-proof plate is detachably connected to a hollow shaft, the free end of the hollow shaft is rotatably connected to a connecting sleeve, and the threaded rod is sleeved in the hollow shaft and threadedly connected to the connecting sleeve.

[0006] The beneficial effects of the utility model are as follows: the water-blocking and plugging device at the end of the double-wall corrugated pipe well of the utility model achieves the effect of leak-proofing the bellows head by arranging an arc-shaped clamp and a leak-proof plate through a threaded connection, and the threaded rod can be abutted against the inner wall of the installation well through the coordinated arrangement of the hollow shaft, the threaded rod and the connecting sleeve, thereby further improving the stability of the leak-proof plate after installation.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, an annular limiting edge is reserved between the convex edge and the outer ring side of the leakage prevention plate, and the outer ring clamping edge abuts against the annular limiting edge.

[0009] The beneficial effect of adopting the above further solution is that the annular limiting edge cooperates with the outer ring clamping edge to make the assembly structure more stable and reliable.

[0010] Furthermore, an annular space for accommodating annular ribs on the corrugated tube is formed between the convex edge and the arc-shaped clamp.

[0011] Furthermore, an inner ring side wall of the convex edge is provided with a leak-proof cushion, and the leak-proof cushion abuts against the outer side wall of the end of the bellows.

[0012] The beneficial effect of adopting the above further solution is that the provision of the leak-proof cushion makes the fit between the convex edge and the outer side wall of the end of the bellows tighter, and the leak-proof effect is better.

[0013] Furthermore, a leak-proof ring is provided on one side of the leak-proof plate, and the leak-proof ring is located on the inner side of the convex edge. An annular space for mounting the end of the bellows is formed between the leak-proof ring and the convex edge.

[0014] The beneficial effect of adopting the above further solution is that the provision of the leak-proof ring can cooperate with the leak-proof cushion to make the leak-proof effect of the leak-proof plate better.

[0015] Furthermore, the axial height of the anti-leakage ring is greater than the axial height of the convex edge.

[0016] Furthermore, a slope is provided on the outer side of the free end of the anti-leakage ring.

[0017] The beneficial effect of adopting the above further solution is that the setting of the slope makes it easier for the leak-proof ring to be inserted into the corrugated tube.

[0018] Furthermore, a contact block is provided at the free end of the threaded rod, and the outer surface of the contact block is a curved surface.

[0019] The beneficial effect of adopting the above further solution is that the abutment block can be easily adapted and abutted against the inner wall of the installation well.

[0020] Furthermore, the leakage-proof plate is a circular plate, and the hollow shaft is installed at the center position of the other side of the leakage-proof plate; the central axes of the leakage-proof plate, the circular clamp and the convex edge coincide with each other.

[0021] Furthermore, two handles are provided on the other side of the leakage prevention plate.

[0022] The beneficial effect of adopting the above further solution is that by providing a handle, it is convenient for workers to perform installation operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the water-blocking and plugging device at the end of a double-wall corrugated pipe well of the utility model;

[0024] Figure 2 It is a schematic cross-sectional view of the water-blocking plugging device at the end of a double-wall corrugated pipe well of the utility model;

[0025] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the circular ring clamp of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Arc clamp; 11. Outer ring clamp edge;

[0029] 2. Leakage-proof plate; 21. Convex edge; 22. Annular limiting edge; 23. Leakage-proof cushion; 24. Leakage-proof ring; 25. Slope;

[0030] 3. Hollow shaft; 4. Threaded rod; 41. Abutment block;

[0031] 5. Connecting sleeve;

[0032] 6. Bellows; 61. Annular ribs; 7. Handle. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] like Figure 1 to Figure 4As shown, a double-walled corrugated pipe well end water-blocking plugging device of this embodiment comprises two arc clamps 1, a leak-proof plate 2, a hollow shaft 3 and a threaded rod 4. The two arc clamps 1 are butt-jointed to form a circular ring clamp, and the outer ring side of the arc clamp 1 is axially extended to form an outer ring clamp edge 11. An annular assembly interval is reserved between the outer ring clamp edges 11 of the two arc clamps 1 and the outer side wall of the end of the bellows 6, and the inner ring side wall of the outer ring clamp edge 11 is provided with an internal thread; a side surface of the leak-proof plate 2 is provided with a circle of convex edges 21, The outer ring side wall of the flange 21 is provided with a circle of external threads, and the flange 21 is adapted to be installed in the assembly interval. The inner ring side wall of the flange 21 abuts against the outer side wall of the end of the bellows 6, and the outer ring side wall of the flange 21 is threadedly connected with the inner thread of the inner ring side wall of the outer ring clamping edge 11 through the external thread; the other side of the leakage-proof plate 2 is detachably connected with a hollow shaft 3, and the free end of the hollow shaft 3 is rotatably connected with a connecting sleeve 5, and the threaded rod 4 is sleeved in the hollow shaft 3 and threadedly connected with the connecting sleeve 5.

[0035] Among them, the arc clamp 1 of this embodiment can be made of hard rubber material that can be slightly deformed. The bellows 6 is provided with a plurality of annular ribs 61, and the arc clamp 1 can be set between two annular ribs 61 at the end of the bellows 6. The connecting sleeve is coaxially arranged with the hollow shaft. A square block can be set at the center position of the other side of the leak-proof plate 2, and then one end of the hollow shaft 3 is inserted into the square block and connected to the square block by bolts; or a threaded groove is set on the square block, and one end of the hollow shaft 3 is inserted into the threaded groove and threadedly connected to the threaded groove.

[0036] Specifically, one end of the two arc-shaped clamps 1 may be hinged via a hinge shaft, and the other end of the two arc-shaped clamps 1 may be provided with ear plates, and the two ear plates may be connected and fixed by bolts.

[0037] like Figure 2 and Figure 3 As shown, an annular limiting edge 22 is reserved between the convex edge 21 and the outer ring side of the leakage prevention plate 2 in this embodiment, and the outer ring clamping edge 11 abuts against the annular limiting edge 22. The annular limiting edge cooperates with the outer ring clamping edge to make the assembly structure more stable and reliable.

[0038] like Figure 3 As shown, an annular space for accommodating the annular rib 61 on the corrugated tube 6 is formed between the flange 21 and the arc-shaped clamp 1 of this embodiment.

[0039] like Figure 3 As shown, the inner ring side wall of the flange 21 of this embodiment is provided with a leakproof cushion 23, and the leakproof cushion 23 abuts against the outer side wall of the end of the bellows 6. The provision of the leakproof cushion makes the fit between the flange and the outer side wall of the end of the bellows tighter, and the leakproof effect is better.

[0040] like Figure 3 As shown, a leak-proof ring 24 is provided on one side of the leak-proof plate 2 of this embodiment, and the leak-proof ring 24 is located on the inner side of the convex edge 21. An annular space for mounting the end of the bellows 6 is formed between the leak-proof ring 24 and the convex edge 21. The leak-proof ring can be provided in conjunction with the leak-proof cushion to achieve a better leak-proof effect of the leak-proof plate. The leak-proof ring 24 can be made of elastic rubber.

[0041] like Figure 3 As shown, the axial height of the anti-leakage ring 24 of this embodiment is greater than the axial height of the flange 21 .

[0042] like Figure 3 As shown, the free end of the anti-leakage ring 24 of this embodiment is provided with a circle of slope 25. The setting of the slope facilitates the anti-leakage ring to be inserted into the corrugated pipe.

[0043] like Figure 1 and Figure 2 As shown, the free end of the threaded rod 4 of this embodiment is provided with an abutment block 41, and the outer surface of the abutment block 41 is an arc surface. The abutment block is convenient for adapting and abutting with the inner wall of the installation well.

[0044] like Figure 1 As shown, the leakage-proof plate 2 of this embodiment is a circular plate, and the hollow shaft 3 is installed at the center position of the other side of the leakage-proof plate 2; the central axes of the leakage-proof plate 2, the circular clamp and the flange 21 coincide with each other.

[0045] like Figure 1 As shown, the other side of the anti-leakage plate 2 of this embodiment is further provided with two handles 7, and the two handles 7 are symmetrically arranged. By providing the handles, it is convenient for the staff to perform the installation operation.

[0046] When the present embodiment is used, after two arc clamps are clamped between two annular ribs on the bellows, the two arc clamps are connected together by a fastening mechanism to form an annular clamp, which will produce inward pressure on the outer wall of the bellows, and then the leak-proof plate can be threadedly connected with the annular clamp after installation. At this time, the pressure after water injection is transmitted to the harder annular ribs by the leak-proof plate. After the leak-proof plate is installed, the leak-proof ring on it is squeezed and deformed by the inward pressure of the bellows shell squeezed by the annular clamp, thereby improving the contact effect between the leak-proof ring and the inner wall of the bellows, and improving the water-proof performance of the leak-proof plate. When the pressure is high after water injection in the bellows, and the bellows head is a detection well, the hollow shaft can be installed on the leak-proof plate, and the threaded rod in the hollow shaft can be screwed out by rotating the connecting sleeve, so that the abutment block at one end of the threaded rod can abut against the inner wall of the detection well, further improving the stability of the leak-proof plate after installation. The presence of the arc clamp will raise the bellows head by a small angle, but will not affect the use of the abutment block.

[0047] The double-walled corrugated pipe well end water-blocking plugging device of this embodiment achieves the effect of leak-proofing the corrugated pipe head by setting an arc-shaped clamp and a leak-proof plate in threaded connection, and the threaded rod can be abutted against the inner wall of the installation well by the coordinated setting of the hollow shaft, the threaded rod and the connecting sleeve, further improving the stability of the leak-proof plate after installation. In this embodiment, the leak-proof ring and the circular ring clamp assembled by the two arc-shaped clamps jointly squeeze the corrugated pipe, thereby avoiding the disadvantage of poor leak-proofness between the rubber airbag and the smooth inner wall of the corrugated pipe, making it difficult for the leak-proof plate to leak.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A double-wall corrugated pipe well end water-blocking plugging device, characterized in that: The invention comprises two arc clamps, a leak-proof plate, a hollow shaft and a threaded rod, wherein the two arc clamps are butted to form a circular ring clamp, the outer ring side of the arc clamp extending axially to form an outer ring clamp edge, an annular assembly space is reserved between the outer ring clamp edges of the two arc clamps and the outer side walls of the end portions of the bellows, an inner ring side wall of the outer ring clamp edge is provided with an internal thread; a side surface of the leak-proof plate is provided with a circle of convex edge, the outer ring side wall of the convex edge is provided with a circle of external threads, the convex edge is adapted to be installed in the assembly space, the inner ring side wall of the convex edge abuts against the outer side wall of the end portion of the bellows, and the outer ring side wall of the convex edge is threadedly connected to the inner thread of the inner ring side wall of the outer ring clamp edge through an external thread; the other side surface of the leak-proof plate is detachably connected to a hollow shaft, the free end of the hollow shaft is rotatably connected to a connecting sleeve, and the threaded rod is sleeved in the hollow shaft and threadedly connected to the connecting sleeve.

2. A double-wall corrugated pipe well end water blocking and plugging device according to claim 1, characterized in that: An annular limiting edge is reserved between the convex edge and the outer ring side of the leakage prevention plate, and the outer ring clamping edge abuts against the annular limiting edge.

3. A double-wall corrugated pipe well end water blocking and plugging device according to claim 2, characterized in that: An annular space for accommodating annular ribs on the corrugated pipe is formed between the convex edge and the arc-shaped clamp.

4. A double-wall corrugated pipe well end water blocking and plugging device according to claim 1, characterized in that: The inner ring side wall of the convex edge is provided with a leak-proof cushion, and the leak-proof cushion abuts against the outer side wall of the end of the bellows.

5. A double-wall corrugated pipe well end water blocking and plugging device according to claim 1, characterized in that: A circle of leak-proof ring is arranged on one side of the leak-proof plate, and the leak-proof ring is located on the inner side of the convex edge. An annular space for mounting the end of the corrugated pipe is formed between the leak-proof ring and the convex edge.

6. A double-wall corrugated pipe well end water blocking and plugging device according to claim 5, characterized in that: The axial height of the anti-leakage ring is greater than the axial height of the convex edge.

7. A double-wall corrugated pipe well end water blocking and plugging device according to claim 5, characterized in that: A circle of slope surface is arranged on the outer side of the free end of the anti-leakage ring.

8. A double-wall corrugated pipe well end water blocking and plugging device according to claim 1, characterized in that: The free end of the threaded rod is provided with an abutment block, and the outer surface of the abutment block is a curved surface.

9. A double-wall corrugated pipe well end water blocking and plugging device according to claim 1, characterized in that: The leak-proof plate is a circular plate, and the hollow shaft is installed at the center position of the other side of the leak-proof plate; the central axes of the leak-proof plate, the circular clamp and the convex edge coincide with each other.

10. A double-wall corrugated pipe well end water blocking and plugging device according to claim 1, characterized in that: The other side of the leakage prevention plate is also provided with two handles.

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