Leakage-proof device for water supply and drainage pipe joint

Abstract

The utility model relates to a water supply and drainage pipe joint leakproof device applied to the field of drainage pipelines, which comprises an adjusting cylinder, the inner wall of the adjusting cylinder is fixedly connected with a fixed cylinder, the inner wall of the fixed cylinder is rotatably connected with a supporting cylinder, and the inner wall of the supporting cylinder is fixedly connected with a plurality of springs I; the ends, away from the supporting cylinder, of the first springs are jointly and fixedly connected with a sealing sleeve, a plurality of arc-shaped grooves are formed in the inner wall of the adjusting cylinder, a plurality of clamping blocks are fixedly connected to the inner walls of the arc-shaped grooves, and a plurality of sliding grooves corresponding to the arc-shaped grooves are formed in the outer surface of the fixing cylinder. By the adoption of the structures such as the adjusting cylinder and the like, the sealing sleeve extrudes the pipeline joint inwards by rotating the adjusting cylinder, sealing and leakage prevention are conducted on the pipeline joint, meanwhile, the pipeline joint sealing device can adapt to pipeline joints of different sizes, and the pipeline joint sealing device is convenient to use and high in practicability. The water leakage condition after the sealing ring is damaged and fails is effectively avoided, and the practical performance of the device is improved.

Description

Technical Field

[0001] The utility model relates to a joint leakage prevention device, in particular to a water supply and drainage pipe joint leakage prevention device applied to the field of drainage pipes. Background Art

[0002] Water pipes are water supply pipelines. Modern decoration water pipes are all constructed by buried wall. There are three types of water pipes. The first type is metal pipes, such as hot-dip cast iron pipes, copper pipes, stainless steel pipes, etc. with plastic lining; the second type is plastic-clad metal pipes, such as plastic-clad steel pipes, aluminum-plastic composite pipes, etc.; the third type is plastic pipes, such as PB, PPR, etc.

[0003] Pipe joints are commonly used accessories for connecting pipes. The basic requirement is the leak-proof performance of the connection point. The leak-proof structure of conventional pipe joints generally adopts the form of threaded fastening and is combined with a sealing ring on the connection surface. The leak-proof effect is achieved by tightening the sealing ring. However, during the process of tightening the threads, the sealing ring will be squeezed and worn in the form of twisting. After long-term use, the sealing ring is easily damaged and fails, resulting in water leakage. Utility Model Content

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that conventional pipe joints prevent leakage by tightening the sealing ring, but the sealing ring will be squeezed and worn in the form of twisting during the tightening process of the thread, which will easily cause the sealing ring to be damaged and fail after long-term use, and the service life is not long.

[0005] In order to solve the above problems, the utility model provides a leakage prevention device for a water supply and drainage pipe joint, comprising an adjusting cylinder, the inner wall of the adjusting cylinder is fixedly connected with a fixing cylinder, the inner wall of the fixing cylinder is rotatably connected with a supporting cylinder, the inner wall of the supporting cylinder is fixedly connected with a plurality of springs 1, and one end of the plurality of springs 1 away from the supporting cylinder is commonly fixedly connected with a sealing sleeve, the inner wall of the adjusting cylinder is cut with a plurality of arc grooves, the inner wall of the arc groove is fixedly connected with a plurality of clamping blocks, the outer surface of the fixing cylinder is provided with a plurality of sliding grooves corresponding to the plurality of arc grooves respectively, the inner wall of the supporting cylinder is fixedly connected with a plurality of U-shaped blocks corresponding to the plurality of arc grooves respectively, the inner wall of the U-shaped block is fixedly connected with a spring 2, one end of the spring 2 close to the supporting cylinder is fixedly connected with a slide plate, one end of the slide plate close to the supporting cylinder is fixedly connected with a limiting plate, one end of the limiting plate away from the spring 2 sequentially penetrates the supporting cylinder and the slide groove and extends to the inner cavity of the arc groove, one end of the slide plate away from the limiting plate is fixedly connected with a supporting rod, and one end of the support rod away from the slide plate sequentially penetrates the spring 2 and the U-shaped block and is fixedly connected with a pressing plate.

[0006] In the above-mentioned water supply and drainage pipe joint leakage prevention device, the sealing sleeve is pressed inwardly against the pipe joint by rotating the adjusting cylinder, so that the pipe joint is sealed and leak-proofed and can also adapt to pipe joints of different sizes.

[0007] As a further improvement of the present application, the longitudinal section of the pressure plate is arc-shaped, and one end of the pressure plate away from the slide plate is in contact with the outer surface of the sealing sleeve, and the sealing sleeve is made of rubber material.

[0008] As a further improvement of the present application, the longitudinal section of the clamping block is semicircular, the end of the limiting plate away from the slide plate is arc-surfaced, and the end of the limiting plate away from the slide plate is in contact with the outer surface of the clamping block.

[0009] As a further improvement of the present application, the arcuate grooves are distributed in an annular array around the central axis of the adjusting cylinder, and the width of one radial inner wall of the arcuate groove is greater than the width of another radial inner wall.

[0010] As another improvement of the present application, a positioning cylinder is fixedly sleeved on the outer surface of the adjustment cylinder, and a plurality of protrusions distributed in a ring array around the central axis of the positioning cylinder are fixedly connected to the outer surface of the positioning cylinder, and the protrusions are made of rubber material.

[0011] As another improvement of the present application, the protrusion is replaced with a handle, and a plurality of handles correspond to the arc-shaped groove.

[0012] To sum up, in actual application, the device is placed on the outer surface of the pipe joint, and then the support tube is held with one hand and the positioning tube is rotated counterclockwise with the other hand to rotate the adjustment tube accordingly, driving the limit plate to move inward, and the spring 2 is compressed inward, so that the pressure plate pushes the sealing sleeve inward, so that the sealing sleeve fits tightly on the outer surface of the pipe joint, wraps the outer surface of the pipe joint, thereby effectively avoiding water leakage in the pipe joint. At the same time, the device can be suitable for pipe joints of different sizes, thereby improving the practical performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the first implementation method of this application;

[0014] Figure 2 This is a right side view of the structure of the first embodiment of the present application;

[0015] Figure 3 This is a schematic diagram of the support tube structure of the first embodiment of the present application;

[0016] Figure 4 This is a schematic diagram of the structure of the adjustment cylinder according to the first embodiment of the present application;

[0017] Figure 5 This is a schematic diagram of the pressure plate structure of the first embodiment of the present application;

[0018] Figure 6 This is a schematic structural diagram of the second embodiment of the present application.

[0019] Description of the numbers in the figure:

[0020] 1 adjusting cylinder, 2 fixing cylinder, 3 supporting cylinder, 4 spring 1, 5 sealing sleeve, 6 arc groove, 7 clamping block, 8 sliding groove, 9 U-shaped block, 10 spring 2, 11 sliding plate, 12 limiting plate, 13 supporting rod, 14 pressing plate, 15 positioning cylinder, 16 protrusion, 17 handle. DETAILED DESCRIPTION

[0021] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0022] The first implementation method:

[0023] Figure 1 , Figure 2 and Figure 3 Shown is a leakage prevention device for a water supply and drainage pipe joint, comprising an adjusting cylinder 1, the inner wall of the adjusting cylinder 1 is fixedly connected to a fixing cylinder 2, the inner wall of the fixing cylinder 2 is rotatably connected to a supporting cylinder 3, the inner wall of the supporting cylinder 3 is fixedly connected to a plurality of springs 4, the ends of the plurality of springs 4 away from the supporting cylinder 3 are commonly fixedly connected to a sealing sleeve 5, the spring 4 can limit and fix the sealing sleeve 5, the outer surface of the adjusting cylinder 1 is fixedly sleeved with a positioning cylinder 15, the outer surface of the positioning cylinder 15 is fixedly connected to a plurality of protrusions 16 distributed in a ring array around the central axis of the positioning cylinder 15, the protrusions 16 are made of rubber material, the protrusions 16 can increase the friction between the staff and the positioning cylinder 15, so as to facilitate the staff to rotate the positioning cylinder 15.

[0024] Figure 4 It is shown that: a plurality of arc grooves 6 are bored on the inner wall of the adjusting cylinder 1, a plurality of clamping blocks 7 are fixedly connected to the inner wall of the arc groove 6, the clamping blocks 7 can limit the limit plate 12 to improve the stability of the limit plate 12, a plurality of slide grooves 8 corresponding to the plurality of arc grooves 6 are opened on the outer surface of the fixing cylinder 2, the longitudinal section of the clamping block 7 is semicircular, the end of the limit plate 12 away from the slide plate 11 is subjected to arc surface treatment to facilitate the movement of the limit plate 12 and improve the work efficiency, the arc grooves 6 are distributed in a ring array around the central axis of the adjusting cylinder 1, and the width of one radial inner wall of the arc groove 6 is greater than the width of the other radial inner wall, so that when the adjusting cylinder 1 is rotated, the limit plate 12 can be pushed to move.

[0025] Figure 5It is shown that: the inner wall of the support cylinder 3 is fixedly connected with a plurality of U-shaped blocks 9 corresponding to the plurality of arc grooves 6 respectively, the inner wall of the U-shaped block 9 is fixedly connected with a spring 2 10, the end of the spring 2 10 close to the support cylinder 3 is fixedly connected with a slide plate 11, the end of the slide plate 11 close to the support cylinder 3 is fixedly connected with a limiting plate 12, the end of the limiting plate 12 away from the spring 2 10 sequentially penetrates the support cylinder 3, the slide groove 8 and extends to the inner cavity of the arc groove 6, and the end of the slide plate 11 away from the limiting plate 12 is fixedly connected with a support rod 13. The end of the support rod 13 away from the slide plate 11 passes through the spring 2 10 and the U-shaped block 9 in sequence and is fixedly connected with a pressure plate 14. The longitudinal section of the pressure plate 14 is arc-shaped, and the end of the pressure plate 14 away from the slide plate 11 fits with the outer surface of the sealing sleeve 5. The movement of the pressure plate 14 can push the sealing sleeve 5 to deform so that it fits tightly with the pipe joint. The sealing sleeve 5 is made of rubber material and has elasticity. It can be deformed when squeezed, and the end of the limit plate 12 away from the slide plate 11 contacts the outer surface of the block 7.

[0026] When in use, the device is sleeved on the outer surface of the pipe joint, and then the supporting tube 3 is held with one hand and the positioning tube 15 is rotated counterclockwise with the other hand, so that the adjusting tube 1 rotates accordingly, driving the limit plate 12 to move inward, and the spring 10 is compressed inward, so that the pressing plate 14 pushes the sealing sleeve 5 inward, so that the sealing sleeve 5 fits tightly on the outer surface of the pipe joint, wraps the outer surface of the pipe joint, thereby effectively avoiding water leakage in the pipe joint. At the same time, the device can be applied to pipe joints of different sizes, thereby improving the practical performance of the device.

[0027] The second implementation method:

[0028] In this embodiment, based on the first embodiment, the protrusion 16 is replaced with a handle 17, and the rest of the parts are consistent with the first embodiment.

[0029] Figure 6 Exit: The protrusion 16 is replaced with a handle 17 , and the plurality of handles 17 correspond to the arc-shaped groove 6 .

[0030] During use, if the pipe joint is large in size, the corresponding diameter of the adjusting cylinder 1 is also large, and it is inconvenient for the staff to rotate the positioning cylinder 15 by pressing the protrusion 16. At this time, the staff can adjust it by holding the handle 17, which is convenient for the staff to use.

[0031] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted by this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A leakage prevention device for a water supply and drainage pipe joint, comprising an adjustment cylinder (1), characterized in that: The inner wall of the adjusting cylinder (1) is fixedly connected to a fixing cylinder (2), the inner wall of the fixing cylinder (2) is rotatably connected to a supporting cylinder (3), the inner wall of the supporting cylinder (3) is fixedly connected to a plurality of springs (4), and the ends of the plurality of springs (4) away from the supporting cylinder (3) are fixedly connected to a sealing sleeve (5); The inner wall of the adjusting cylinder (1) is provided with a plurality of arc grooves (6), the inner wall of the arc groove (6) is fixedly connected with a plurality of clamping blocks (7), the outer surface of the fixing cylinder (2) is provided with a plurality of sliding grooves (8) respectively corresponding to the plurality of arc grooves (6), the inner wall of the supporting cylinder (3) is fixedly connected with a plurality of U-shaped blocks (9) respectively corresponding to the plurality of arc grooves (6), the inner wall of the U-shaped block (9) is fixedly connected with a spring 2 (10), and one end of the spring 2 (10) close to the supporting cylinder (3) is fixedly connected with a A slide plate (11), wherein one end of the slide plate (11) close to the support tube (3) is fixedly connected to a limit plate (12), and one end of the limit plate (12) away from the second spring (10) sequentially penetrates the support tube (3) and the slide groove (8) and extends to the inner cavity of the arc groove (6); one end of the slide plate (11) away from the limit plate (12) is fixedly connected to a support rod (13), and one end of the support rod (13) away from the slide plate (11) sequentially penetrates the second spring (10) and the U-shaped block (9) and is fixedly connected to a pressure plate (14).

2. A water supply and drainage pipe joint leakage prevention device according to claim 1, characterized in that: The longitudinal section of the pressing plate (14) is arc-shaped, and one end of the pressing plate (14) away from the sliding plate (11) is in contact with the outer surface of the sealing sleeve (5), and the sealing sleeve (5) is made of rubber material.

3. A water supply and drainage pipe joint anti-leakage device according to claim 1, characterized in that: The longitudinal section of the clamping block (7) is semicircular, the end of the limiting plate (12) away from the slide plate (11) is processed into a curved surface, and the end of the limiting plate (12) away from the slide plate (11) is in contact with the outer surface of the clamping block (7).

4. A water supply and drainage pipe joint leakage prevention device according to claim 1, characterized in that: The arc-shaped grooves (6) are distributed in a ring array around the central axis of the adjustment cylinder (1), and the width of one radial inner wall of the arc-shaped groove (6) is greater than the width of another radial inner wall.

5. A water supply and drainage pipe joint anti-leakage device according to claim 1, characterized in that: The outer surface of the adjustment cylinder (1) is fixedly sleeved with a positioning cylinder (15), and the outer surface of the positioning cylinder (15) is fixedly connected to a plurality of protrusions (16) distributed in a ring array around the central axis of the positioning cylinder (15), and the protrusions (16) are made of rubber material.

6. A water supply and drainage pipe joint anti-leakage device according to claim 5, characterized in that: The protrusion (16) is replaced with a handle (17), and a plurality of the handles (17) correspond to the arc-shaped grooves (6).

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