Water plugging valve for pipeline

Abstract

The utility model provides a water plugging valve for a pipeline, which relates to the technical field of water plugging valves and comprises a valve body, the inner side of the valve body is connected with a water plugging gate plate in a sliding manner, the inner side of the valve body is provided with a water passing port, and one side of the valve body is fixedly connected with a water pipe connecting sleeve and a water pipe limiting sleeve. The outer surface of the water pipe connecting sleeve is connected with a water supply and drainage pipe. The water supply and drainage pipe is connected between the water pipe connecting sleeve and the water pipe limiting sleeve behind the valve body in a sleeved mode, the sealing ring is arranged between the water supply and drainage pipe and the valve body to improve sealing performance, the clamping plate is arranged on the front side of the valve body to form the U-shaped groove, and the water plugging gate plate is inserted into the U-shaped groove. The water supply and drainage pipe is quickly plugged by installing the water plugging gate plate in the U-shaped groove through up-down sliding, the expansion rubber ring for rainwater expansion is arranged on the water plugging gate plate, and when the water plugging gate plate is inserted into the bottom of the U-shaped groove of the valve body, the expansion rubber ring abuts against the edge position of the water passing opening, so that the sealing and water seepage preventing effects are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water blocking valves, in particular to a water blocking valve for pipelines. Background Art

[0002] The construction period of laying water supply and drainage pipes is usually long. During the construction interval, it is often necessary to temporarily block the pipe openings of the drainage pipes to prevent soil and debris around the pipes from entering the pipes. In addition, during the installation of water supply and drainage pipes, it is often necessary to conduct a water-tightness test on the pipes to detect the tightness of the pipes and avoid water seepage or leakage. When conducting a water-tightness test, it is usually necessary to block one end of the pipe, and then inject water into the pipe through a water injection device to observe the water level changes in the inspection well to test the tightness of the pipe.

[0003] At present, the common method of pipe water blocking is to use cement or concrete walls to achieve the blocking of the pipes. However, the construction and demolition of concrete walls are not only time-consuming and labor-intensive, but also cannot be reused, which increases the construction cost. In addition, the wall-type blocking structure is easy to damage the water supply and drainage pipes during the demolition process, affecting the subsequent use of the pipes. Alternatively, a rubber airbag is used to inflate and pressurize it to block the pipe opening. However, this method requires an air compressor or an air pump, which is inconvenient to operate, and the rubber airbag is prone to leakage, resulting in leakage of the test water, affecting the test results. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that the construction cost is increased, the wall-type blocking structure is prone to damage the water supply and drainage pipes during the removal process, affecting the subsequent use of the pipes, in addition, the operation is inconvenient, and the rubber airbag is prone to leak, resulting in leakage of test water and affecting the test results. A water blocking valve for pipelines is proposed to solve the problems that

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a water-blocking valve for a pipeline, comprising a valve body, a water-blocking gate plate is slidably connected to the inner side of the valve body, a water outlet is arranged on the inner side of the valve body, a water pipe connecting sleeve and a water pipe limiting sleeve are fixedly connected to one side of the valve body, the outer surface of the water pipe connecting sleeve is connected to a water supply and drainage pipe, the water pipe limiting sleeve is arranged on the outside of the water supply and drainage pipe, a sealing ring is arranged between the water pipe connecting sleeve and the water pipe limiting sleeve, the sealing ring is connected between the water supply and drainage pipe and the valve body, a plurality of clamping plates are arranged on the outer side of the valve body, a U-shaped groove is opened between the valve body and the clamping plate, and the water-blocking gate plate is slidably connected to the inner side of the clamping plate.

[0006] Preferably, an expansion rubber ring corresponding to the position of the water outlet is fixed on the surface of the water blocking gate plate.

[0007] Preferably, a limiting strip is provided on the upper surface of the water blocking gate plate, and a limiting groove corresponding to the position and matching the shape of the limiting strip is provided on the surface of the valve body.

[0008] Preferably, a plurality of arc-shaped bayonet holes are penetrated through the outer side of the water pipe limiting sleeve, a limiting clamp ring is arranged around and fitted on the outer side of the water pipe limiting sleeve, and the inner side surface of the limiting clamp ring is provided with clamping blocks with the same number and matching shape as the arc-shaped bayonet holes.

[0009] Preferably, reinforcing ribs are provided on one side of the water blocking gate plate.

[0010] Preferably, a lifting portion is provided on the top of the water blocking gate plate, and an anti-slip protrusion is provided on the bottom of the lifting portion.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, the water supply and drainage pipe is sleeved between the water pipe connecting sleeve and the water pipe limiting sleeve at the rear of the valve body, a sealing ring is arranged between the water supply and drainage pipe and the valve body to improve the sealing performance, a clamping plate is arranged on the front side of the valve body to form a U-shaped groove for inserting the water blocking gate plate, and the water blocking gate plate is installed in the U-shaped groove by sliding up and down to quickly block the water supply and drainage pipe, and an expansion rubber ring that swells with rainwater is arranged on the water blocking gate plate. When the water blocking gate plate is inserted into the bottom of the U-shaped groove of the valve body, the expansion rubber ring abuts against the edge of the water outlet, and when the valve body is inserted into the water supply and drainage pipe, the expansion rubber ring expands when it encounters water, thereby blocking the gap between the water outlet and the water blocking gate plate, so as to improve the sealing and anti-seepage effect. The axial length of the water pipe connecting sleeve is not less than cm, and the axial length of the water pipe limiting sleeve is less than the axial length of the water pipe connecting sleeve, so as to improve the connection stability between the water supply and drainage pipe and the valve body.

[0013] 2. In the utility model, the water blocking gate is inserted into the bottom of the U-shaped groove, and the limit strip is clamped inside the limit groove, so as to improve the connection stability between the water blocking gate and the valve body, and prevent the water blocking gate from sliding up and down inside the limit groove. The cross section of the limit strip is arc-shaped, semicircular, triangular or trapezoidal. By arranging an arc-shaped bayonet on the water pipe limit sleeve, when the limit clamp ring is sleeved on the outside of the water pipe limit sleeve, the clamping block thereon is tightly buckled in the arc-shaped bayonet, and the bottom of the clamping block is just clamped in the pipe wall groove of the annular corrugated pipe type water supply and drainage pipe, so as to limit and fix it. , prevent the water supply and drainage pipe from slipping out of the water pipe connecting sleeve, improve the connection stability between the water supply and drainage pipe and the valve body, the arc length of the limiting clamp ring is at least one-third of a circle, to improve the stability of the buckle connection between the limiting clamp ring and the water supply and drainage pipe, the arc length of the limiting clamp ring is three-quarters of a circle, and the arc-shaped bayonet is provided with two and symmetrically distributed on the side wall of the water pipe limiting sleeve along the axis. A lifting part is provided on the upper part of the water blocking gate plate to facilitate lifting and pulling out the water blocking gate plate, and an anti-slip protrusion is provided on the lifting part to increase the friction when lifting the water blocking gate plate, thereby playing an anti-slip role. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a water blocking valve for a pipeline;

[0015] Figure 2 Another structural schematic diagram of a water shutoff valve for pipelines proposed by the utility model;

[0016] Figure 3 The utility model provides a schematic diagram of the exploded structure of a water shutoff valve for a pipeline;

[0017] Figure 4 The utility model provides a schematic structural diagram of a water shutoff valve for a pipeline from another angle.

[0018] Legend: 1. Valve body; 11. Water outlet; 12. Water pipe connecting sleeve; 13. Water pipe limiting sleeve; 14. Clamping plate; 15. U-shaped groove; 16. Limiting groove; 17. Arc-shaped clamping mouth; 2. Water blocking gate; 21. Expansion rubber ring; 22. Limiting strip; 23. Lifting part; 24. Anti-slip protrusion; 4. Sealing ring; 5. Limiting clamping ring; 51. Block; 6. Reinforcing rib. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Example 1

[0021] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a water-blocking valve for a pipeline, comprising a valve body 1, a water-blocking gate plate 2 is slidably connected to the inner side of the valve body 1, a water outlet 11 is arranged on the inner side of the valve body 1, a water pipe connecting sleeve 12 and a water pipe limiting sleeve 13 are fixedly connected to one side of the valve body 1, the outer surface of the water pipe connecting sleeve 12 is connected to a water supply and drainage pipe, the water pipe limiting sleeve 13 is sleeved on the outside of the water supply and drainage pipe, a sealing ring 4 is arranged between the water pipe connecting sleeve 12 and the water pipe limiting sleeve 13, the sealing ring 4 is connected between the water supply and drainage pipe and the valve body 1, a plurality of clamping plates 14 are arranged on the outer side of the valve body 1, a U-shaped groove 15 is opened between the valve body 1 and the clamping plate 14, the water-blocking gate plate 2 is slidably connected to the inner side of the clamping plate 14, and an expansion rubber ring 21 corresponding to the position of the water outlet 11 is fixed on the surface of the water-blocking gate plate 2.

[0022] In this embodiment, the water supply and drainage pipe is sleeved between the water pipe connecting sleeve 12 and the water pipe limiting sleeve 13 at the rear of the valve body 1, a sealing ring 4 is arranged between the water supply and drainage pipe and the valve body 1 to improve the sealing performance, a clamping plate 14 is arranged on the front side of the valve body 1 to form a U-shaped groove 15 for inserting the water blocking gate plate 2, and the water blocking gate plate 2 is installed in the U-shaped groove 15 by sliding up and down to quickly block the water supply and drainage pipe, and an expansion rubber ring 21 that expands with rainwater is arranged on the water blocking gate plate 2. When the sluice gate plate 2 is inserted into the bottom of the U-shaped groove 15 of the valve body 1, the expansion rubber ring 21 abuts against the edge of the water outlet 11. When the valve body 1 is connected to the water supply and drainage pipe, the expansion rubber ring 21 swells when it encounters water, thereby blocking the gap between the water outlet 11 and the sluice gate plate 2 to improve the sealing and anti-water seepage effect. The axial length of the water pipe connecting sleeve 12 is not less than 15 cm, and the axial length of the water pipe limiting sleeve 13 is less than the axial length of the water pipe connecting sleeve to improve the connection stability between the water supply and drainage pipe and the valve body 1. Example 2

[0023] like Figure 1-Figure 4 As shown, a limit strip 22 is provided on the upper surface of the water blocking gate plate 2, a limit groove 16 corresponding to the position and matching the shape of the limit strip 22 is provided on the surface of the valve body 1, a plurality of arc-shaped bayonet holes 17 are penetrated through the outer side of the water pipe limit sleeve 13, a limit clamp ring 5 is arranged around and fitted on the outside of the water pipe limit sleeve 13, and a clamping block 51 having the same number and matching shape as the arc-shaped bayonet holes 17 is provided on the inner side surface of the limit clamp ring 5, a reinforcing rib 6 is provided on one side of the water blocking gate plate 2, a lifting portion 23 is provided on the top of the water blocking gate plate 2, and an anti-slip protrusion 24 is provided on the bottom of the lifting portion 23.

[0024] In this embodiment, when the water blocking gate plate 2 is inserted into the bottom of the U-shaped groove 15, the limit strip 22 is clamped inside the limit groove 16, thereby improving the connection stability between the water blocking gate plate 2 and the valve body 1 and preventing the water blocking gate plate 2 from sliding up and down inside the limit groove 16. The cross-section of the limit strip 22 is arc-shaped, semicircular, triangular or trapezoidal. By providing an arc-shaped bayonet 17 on the water pipe limit sleeve 13, when the limit clamp ring 5 is sleeved on the outside of the water pipe limit sleeve 13, the clamping block 51 thereon is tightly clamped in the arc-shaped bayonet 17, and the bottom of the clamping block 51 is just clamped in the wall groove of the annular corrugated pipe type water supply and drainage pipe, which is limited and fixed to prevent the water supply and drainage from leaking. The pipe slips out of the water pipe connecting sleeve, which improves the connection stability between the water supply and drainage pipe and the valve body 1. The arc length of the limiting clamp ring 5 is at least one-third of a circle to improve the stability of the buckle connection between the limiting clamp ring 5 and the water supply and drainage pipe. The arc length of the limiting clamp ring 5 is three-quarters of a circle. There are two arc-shaped bayonet holes 17, which are symmetrically distributed on the side wall along the axis of the water pipe limiting sleeve. A lifting portion 23 is provided on the upper part of the water blocking gate plate 2 to facilitate lifting and pulling out the water blocking gate plate 2. An anti-slip protrusion 24 is provided on the lifting portion 23 to increase the friction when lifting the water blocking gate plate 2 and play an anti-slip role. The reinforcing ribs 6 improve the overall structural strength of the valve body 1 and the water blocking gate plate 2.

[0025] The working principle of this embodiment: when in use, firstly, the water supply and drainage pipe is sleeved between the water pipe connecting sleeve 12 and the water pipe limiting sleeve 13 at the rear of the valve body 1, and a sealing ring 4 is arranged between the water supply and drainage pipe and the valve body 1 to improve the sealing performance, and a clamping plate 14 is arranged on the front side of the valve body 1 to form a U-shaped groove 15 for inserting the water blocking gate plate 2, and the water blocking gate plate 2 is installed in the U-shaped groove 15 by sliding up and down to quickly block the water supply and drainage pipe, and an expansion rubber ring 21 that swells with rainwater is arranged on the water blocking gate plate 2, when the water blocking gate plate 2 is inserted into the bottom of the U-shaped groove 15 of the valve body 1, the expansion rubber ring 21 abuts against the edge of the water outlet 11, and when the valve body 1 is inserted into the water supply and drainage pipe, the expansion rubber ring 21 swells when it encounters water, thereby blocking the gap between the water outlet 11 and the water blocking gate plate 2, so as to improve the sealing and anti-seepage effect, and when the water blocking gate plate 2 is inserted into the bottom of the U-shaped groove 15, the limiting strip 22 is clamped in the inner part of the limiting groove 16 The bottom of the block 51 is just clamped in the pipe wall groove of the annular corrugated pipe type water supply and drainage pipe, and the limit fixing is performed to prevent the water supply and drainage pipe from slipping out of the water pipe connecting sleeve, thereby improving the connection stability between the water supply and drainage pipe and the valve body 1. The arc length of the limiting clamp ring 5 is at least one-third of a circle to improve the stability of the buckle connection between the limiting clamp ring 5 and the water supply and drainage pipe. The arc length of the limiting clamp ring 5 is three-quarters of a circle. The arc bayonet 17 is set to two and is symmetrically distributed on the side wall of the water pipe limiting sleeve along the axis. A lifting portion 23 is provided on the upper part of the water blocking gate plate 2 to facilitate the lifting and extraction of the water blocking gate plate 2. An anti-skid protrusion 24 is provided on the lifting portion 23 to increase the friction when the water blocking gate plate 2 is lifted and pulled, thereby playing an anti-skid role.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A water shutoff valve for a pipeline, comprising a valve body (1), characterized in that: The inner side of the valve body (1) is slidably connected to a water blocking gate plate (2), the inner side of the valve body (1) is provided with a water outlet (11), one side of the valve body (1) is fixedly connected to a water pipe connecting sleeve (12) and a water pipe limiting sleeve (13), the outer surface of the water pipe connecting sleeve (12) is connected to a water supply and drainage pipe, the water pipe limiting sleeve (13) is sleeved on the outside of the water supply and drainage pipe, a sealing ring (4) is provided between the water pipe connecting sleeve (12) and the water pipe limiting sleeve (13), the sealing ring (4) is connected between the water supply and drainage pipe and the valve body (1), a plurality of clamping plates (14) are provided on the outer side of the valve body (1), a U-shaped groove (15) is provided between the valve body (1) and the clamping plate (14), and the water blocking gate plate (2) is slidably connected to the inner side of the clamping plate (14).

2. The pipeline water shutoff valve according to claim 1, characterized in that: An expansion rubber ring (21) corresponding to the position of the water outlet (11) is fixed on the surface of the water blocking gate plate (2).

3. The pipeline water shutoff valve according to claim 1, characterized in that: A limiting strip (22) is provided on the upper surface of the water blocking gate plate (2), and a limiting groove (16) corresponding in position and shape to the limiting strip (22) is provided on the surface of the valve body (1).

4. The pipeline water shutoff valve according to claim 1, characterized in that: The outer side of the water pipe limiting sleeve (13) is provided with a plurality of arc-shaped bayonet openings (17), the outer side of the water pipe limiting sleeve (13) is provided with a limiting clamp ring (5) surrounding and fitting the outer side, and the inner side surface of the limiting clamp ring (5) is provided with clamping blocks (51) of the same number and matching shape as the arc-shaped bayonet openings (17).

5. The pipeline water shutoff valve according to claim 1, characterized in that: A reinforcing rib (6) is provided on one side of the water blocking gate plate (2).

6. The pipeline water shutoff valve according to claim 1, characterized in that: A lifting portion (23) is provided at the top of the water blocking gate plate (2), and an anti-slip protrusion (24) is provided at the bottom of the lifting portion (23).

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