Flat valve with gravel blocking prevention function

Abstract

The utility model discloses a flat valve with a function of preventing gravel blockage, which comprises a flat valve body, the front side of the flat valve body is provided with an input end, the rear side of the flat valve body is provided with an output end, the input end is provided with a front valve component and a rear valve component, and the bottom of the input end is fixedly connected with a U-shaped pipe. By arranging the front valve assembly, the rear valve assembly, the U-shaped pipe, the front valve, the rear valve, the inner filter screen, the bottom pipe and the end cover, when too much gravel is accumulated in the pipeline, the rear valve assembly can be closed, the front valve and the rear valve can be opened, conveying liquid in the pipeline passes through the U-shaped pipe, the gravel is transferred into the U-shaped pipe, and meanwhile the front valve assembly is rotated; the front filter screen is cleaned through power of conveyed liquid, the cleaning efficiency is improved, then the front valve and the rear valve are closed, the rear valve assembly is opened, gravel in the U-shaped pipe is cleaned, the gravel in the U-shaped pipe can be cleaned under the condition that production is not stopped, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flat valves, and specifically relates to a flat valve with a function of preventing sand and gravel blockage. Background Art

[0002] The flat valve is a common type of valve, mainly used in pipelines such as oil, natural gas, water, and oil products, for cutting off or connecting the medium in the pipeline. The flat valve is very important in the industrial pipeline system.

[0003] During the use of the flat valve, due to the sand and gravel in the conveying liquid, it is easy to cause blockage inside the flat valve. Moreover, once blocked, only production suspension for maintenance is possible, which will also cause economic losses. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flat valve with a function of preventing sand and gravel blockage. A filter screen is arranged at the input end of the flat valve body, which can filter the passing conveying liquid, thereby protecting the downstream flat valve body, improving the safety of the flat valve body, and extending the service life of the flat valve body. When there is too much sand and gravel accumulation inside the pipeline, the rear valve assembly can be closed, the front valve and the rear valve can be opened, and the conveying liquid in the pipeline will pass through the U-shaped pipe, transferring the sand and gravel into the U-shaped pipe. At the same time, the front valve assembly is rotated, and the power of the conveying liquid is used to clean the front filter screen, improving the cleaning efficiency. Then, the front valve and the rear valve are closed, the rear valve assembly is opened, and the sand and gravel in the U-shaped pipe are cleaned. The internal sand and gravel can be cleaned without stopping production, reducing the maintenance cost.

[0005] To achieve the above purpose, a flat valve with a function of preventing sand and gravel blockage is provided, including: a flat valve body, an input end is arranged on the front side of the flat valve body, an output end is arranged on the rear side of the flat valve body, a front valve assembly and a rear valve assembly are arranged on the input end, a U-shaped pipe is fixedly connected to the bottom of the input end, a front valve and a rear valve are fixedly connected to the circumferential surface of the U-shaped pipe, an inner filter screen is fixedly connected to the inside of the U-shaped pipe, a bottom pipe is fixedly connected to the bottom of the U-shaped pipe, and an end cover is threadedly connected to the bottom of the bottom pipe.

[0006] According to the flat valve with a function of preventing sand and gravel blockage, the front valve assembly includes a front sealing ring, a front groove, a front sealing ring, a front filter screen, a front connecting rod, a front indicating groove, a front turntable, and a front fastening ring. A front groove is arranged on the circumferential surface of the front sealing ring, a front sealing ring is clamped inside the front groove, a front filter screen is fixedly connected to the inside of the front sealing ring, a front connecting rod is fixedly connected to the top of the front sealing ring, a front indicating groove is arranged on the top of the front connecting rod, a front turntable is fixedly connected to the top of the front connecting rod, and a front fastening ring is threadedly connected to the circumferential surface of the front connecting rod.

[0007] According to the flat valve with the function of preventing sand and gravel blockage, the rear valve assembly includes a rear sealing plate, a rear groove, a rear sealing ring, a rear connecting rod, a rear indicating groove, a rear turntable and a rear fastening ring. A rear groove is provided on the circumferential surface of the rear sealing plate, and a rear sealing ring is clamped inside the rear groove. The top of the rear sealing plate is fixedly connected with a rear connecting rod. A rear indicating groove is provided at the top of the rear connecting rod. The top of the rear connecting rod is fixedly connected with a rear turntable. A rear fastening ring is threadedly connected to the circumferential surface of the rear connecting rod.

[0008] According to the flat valve with the function of preventing sand and gravel blockage, the front sealing ring and the rear sealing plate are located inside the input end. The front sealing ring is located in front of the U-shaped pipe, and the rear sealing plate is located between the two ports of the U-shaped pipe.

[0009] According to the flat valve with the function of preventing sand and gravel blockage, the front indicating groove is arranged parallel to the front sealing ring, and the rear indicating groove is arranged parallel to the rear sealing plate. It is convenient to judge the position states of the front sealing ring and the rear sealing plate.

[0010] According to the flat valve with the function of preventing sand and gravel blockage, the front valve is located at the front end of the U-shaped pipe, and the rear valve and the inner filter screen are both located at the rear end of the U-shaped pipe. It is convenient to transfer the sand and gravel in the conveying pipe.

[0011] According to the flat valve with the function of preventing sand and gravel blockage, the tops of the front connecting rod and the rear connecting rod both penetrate through the input end and are rotatably connected to the flat valve body.

[0012] According to the flat valve with the function of preventing sand and gravel blockage, the front fastening ring is located below the front turntable, and the rear fastening ring is located below the rear turntable. They are respectively used to fix the front sealing ring and the rear sealing plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. By setting the front sealing ring, the front groove, the front sealing ring, the front filter screen, the front connecting rod, the front indicating groove, the front turntable and the front fastening ring, a filter screen is arranged at the input end of the flat valve body, and the conveyed liquid passing through can be filtered, thereby protecting the downstream flat valve body, improving the safety of the flat valve body, and prolonging the service life of the flat valve body;

[0015] 2. By setting up a front valve assembly, a rear valve assembly, a U-shaped pipe, a front valve, a rear valve, an inner filter screen, a bottom pipe, and an end cap, when there is too much sand and gravel accumulation inside the pipeline, the rear valve assembly can be closed, the front valve and the rear valve can be opened, the conveying liquid in the pipeline will pass through the U-shaped pipe, and the sand and gravel will be transferred into the U-shaped pipe. At the same time, the front valve assembly is rotated, and the power of the conveying liquid is used to clean the front filter screen, improving the cleaning efficiency. Then, the front valve and the rear valve are closed, the rear valve assembly is opened, and the sand and gravel in the U-shaped pipe are cleaned. The internal sand and gravel can be cleaned without stopping production, reducing the maintenance cost.

[0016] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Brief Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0018] Figure 1 is the front view of a flat valve with a function of preventing sand and gravel blockage according to the present utility model;

[0019] Figure 2 is the sectional view of a flat valve with a function of preventing sand and gravel blockage according to the present utility model;

[0020] Figure 3 is the structural diagram of the front valve assembly of a flat valve with a function of preventing sand and gravel blockage according to the present utility model;

[0021] Figure 4 is the structural diagram of the rear valve assembly of a flat valve with a function of preventing sand and gravel blockage according to the present utility model.

[0022] In the figure: 1, flat valve body; 2, input end; 3, output end; 4, front valve assembly; 5, rear valve assembly; 6, U-shaped pipe; 7, front valve; 8, rear valve; 9, inner filter screen; 10, bottom pipe; 11, end cap;

[0023] 401, front sealing ring; 402, front groove; 403, front sealing ring; 404, front filter screen; 405, front connecting rod; 406, front indicating groove; 407, front turntable; 408, front fastening ring;

[0024] 501, rear sealing plate; 502, rear groove; 503, rear sealing ring; 504, rear connecting rod; 505, rear indicating groove; 506, rear turntable; 507, rear fastening ring. Detailed Description of the Embodiment

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-4 , the present utility model provides a technical solution: a flat valve with a function of preventing sand and gravel blockage, including: a flat valve body 1, an input end 2 is arranged on the front side of the flat valve body 1, an output end 3 is arranged on the rear side of the flat valve body 1, a front valve assembly 4 and a rear valve assembly 5 are arranged on the input end 2, a U-shaped pipe 6 is fixedly connected to the bottom of the input end 2, a front valve 7 and a rear valve 8 are fixedly connected to the circumferential surface of the U-shaped pipe 6, an internal filter screen 9 is fixedly connected to the inside of the U-shaped pipe 6, a bottom pipe 10 is fixedly connected to the bottom of the U-shaped pipe 6, and an end cover 11 is threadedly connected to the bottom of the bottom pipe 10. When the front valve 7 and the rear valve 8 are closed, the end cover 11 can be opened to clean the U-shaped pipe 6, thereby cleaning the sand and gravel in the pipeline and realizing maintenance without stopping production.

[0027] The front valve assembly 4 includes a front sealing ring 401, a front groove 402, a front sealing ring 403, a front filter screen 404, a front connecting rod 405, a front indicating groove 406, a front turntable 407 and a front fastening ring 408. A front groove 402 is arranged on the circumferential surface of the front sealing ring 401, and a front sealing ring 403 is clamped in the front groove 402 for sealing and restricting the front sealing ring 403. A front filter screen 404 is fixedly connected to the inside of the front sealing ring 401 for filtering the conveying liquid in the conveying pipeline. A front connecting rod 405 is fixedly connected to the top of the front sealing ring 401. A front indicating groove 406 is arranged on the top of the front connecting rod 405. A front turntable 407 is fixedly connected to the top of the front connecting rod 405. A front fastening ring 408 is threadedly connected to the circumferential surface of the front connecting rod 405. By rotating the front turntable 407, the rotation of the front sealing ring 401 can be realized, so that the surface of the front filter screen 404 can be cleaned by using the power of the conveying liquid, and the cleaning efficiency can be improved.

[0028] The rear valve assembly 5 includes a rear sealing plate 501, a rear groove 502, a rear sealing ring 503, a rear connecting rod 504, a rear indicating groove 505, a rear turntable 506, and a rear fastening ring 507. A rear groove 502 is provided on the circumferential surface of the rear sealing plate 501, and a rear sealing ring 503 is snap-fitted inside the rear groove 502 for sealing and restricting the rear sealing plate 501. The top of the rear sealing plate 501 is fixedly connected to a rear connecting rod 504. A rear indicating groove 505 is provided at the top of the rear connecting rod 504. The top of the rear connecting rod 504 is fixedly connected to a rear turntable 506. A rear fastening ring 507 is threadedly connected to the circumferential surface of the rear connecting rod 504. The rear sealing plate 501 is in a normally open state. When it is necessary to clean the sand and gravel inside the pipeline, it can be closed by rotating the rear turntable 506.

[0029] The tops of the front connecting rod 405 and the rear connecting rod 504 both penetrate through the input end 2 and are rotatably connected to the flat valve body 1. The front sealing ring 401 and the rear sealing plate 501 are located inside the input end 2. The front sealing ring 401 is located in front of the U-shaped pipe 6, and the rear sealing plate 501 is located between the two ports of the U-shaped pipe 6. The front fastening ring 408 is located below the front turntable 407 for fixing the positions of the front turntable 407 and the front sealing ring 401. The rear fastening ring 507 is located below the rear turntable 506 for fixing the positions of the rear turntable 506 and the rear sealing plate 501. The front valve 7 is located at the front end of the U-shaped pipe 6, and the rear valve 8 and the inner filter screen 9 are both located at the rear end of the U-shaped pipe 6 for blocking the sand and gravel in the pipeline. The front indicating groove 406 is arranged parallel to the front sealing ring 401, and the rear indicating groove 505 is arranged parallel to the rear sealing plate 501 for indicating the positions of the front sealing ring 401 and the rear sealing plate 501, facilitating the judgment of the on-off state.

[0030] Working principle: When too much sand and gravel accumulates inside the pipeline, the rear turntable 506 can be rotated to close the input end 2 with the rear sealing plate 501, and at the same time, the front valve 7 and the rear valve 8 are opened. The conveying liquid in the pipeline will pass through the U-shaped pipe 6, transferring the sand and gravel into the U-shaped pipe 6. At the same time, the front turntable 407 is rotated to clean the front filter screen 404 by the power of the conveying liquid. After a period of time, the front valve 7 and the rear valve 8 are closed, and at the same time, the rear sealing plate 501 is opened to make the conveying pipeline unobstructed again. Then, the end cover 11 is opened to clean the sand and gravel in the U-shaped pipe 6, realizing the cleaning of the internal sand and gravel without stopping production.

[0031] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the relevant technical field.

Claims

1. A flat valve with a function of preventing sand and gravel blockage, comprising: Flat valve body (1), characterized in that an input end (2) is provided on the front side of the flat valve body (1), an output end (3) is provided on the rear side of the flat valve body (1), a front valve assembly (4) and a rear valve assembly (5) are provided on the input end (2), a U-shaped pipe (6) is fixedly connected to the bottom of the input end (2), a front valve (7) and a rear valve (8) are fixedly connected to the circumferential surface of the U-shaped pipe (6), an inner filter screen (9) is fixedly connected to the inside of the U-shaped pipe (6), a bottom pipe (10) is fixedly connected to the bottom of the U-shaped pipe (6), and an end cover (11) is threadedly connected to the bottom of the bottom pipe (10).

2. The flat valve with a function of preventing sand and gravel blockage according to claim 1, characterized in that: The front valve assembly (4) includes a front sealing ring (401), a front groove (402), a front sealing ring (403), a front filter screen (404), a front connecting rod (405), a front indicating groove (406), a front turntable (407) and a front fastening ring (408). A front groove (402) is provided on the circumferential surface of the front sealing ring (401), a front sealing ring (403) is clamped inside the front groove (402), a front filter screen (404) is fixedly connected to the inside of the front sealing ring (401), a front connecting rod (405) is fixedly connected to the top of the front sealing ring (401), a front indicating groove (406) is provided on the top of the front connecting rod (405), a front turntable (407) is fixedly connected to the top of the front connecting rod (405), and a front fastening ring (408) is threadedly connected to the circumferential surface of the front connecting rod (405).

3. The flat valve with a function of preventing sand and gravel blockage according to claim 2, characterized in that: The rear valve assembly (5) includes a rear sealing plate (501), a rear groove (502), a rear sealing ring (503), a rear connecting rod (504), a rear indicating groove (505), a rear turntable (506) and a rear fastening ring (507). A rear groove (502) is provided on the circumferential surface of the rear sealing plate (501), a rear sealing ring (503) is clamped inside the rear groove (502), a rear connecting rod (504) is fixedly connected to the top of the rear sealing plate (501), a rear indicating groove (505) is provided on the top of the rear connecting rod (504), a rear turntable (506) is fixedly connected to the top of the rear connecting rod (504), and a rear fastening ring (507) is threadedly connected to the circumferential surface of the rear connecting rod (504).

4. The flat valve with a function of preventing sand and gravel blockage according to claim 3, wherein: The tops of the front connecting rod (405) and the rear connecting rod (504) both penetrate through the input end (2) and are rotatably connected to the flat valve body (1).

5. The flat valve with the function of preventing sand and gravel blockage according to claim 3, characterized in that: The front sealing ring (401) and the rear sealing plate (501) are located inside the input end (2), the front sealing ring (401) is located in front of the U-shaped pipe (6), and the rear sealing plate (501) is located between the two ports of the U-shaped pipe (6).

6. The flat valve with a function of preventing sand and gravel blockage according to claim 3, characterized in that: The front fastening ring (408) is located below the front turntable (407), and the rear fastening ring (507) is located below the rear turntable (506).

7. A flat valve with a function of preventing sand and gravel blockage according to claim 1, characterized in that: The front valve (7) is located at the front end of the U-shaped pipe (6), and the rear valve (8) and the inner filter screen (9) are both located at the rear end of the U-shaped pipe (6).

8. The flat valve with a function of preventing sand and gravel blockage according to claim 3, characterized in that: The front indicating groove (406) is arranged in parallel with the front sealing ring (401), and the rear indicating groove (505) is arranged in parallel with the rear sealing plate (501).

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