Soft sealing groove gate valve

Abstract

The utility model relates to the field of gate valves, in particular to a soft sealing groove gate valve. The technical problem to be solved by the utility model is to provide the gate valve capable of filtering silt impurities in fluid and preventing silt from abrading the gate plate; meanwhile, silt is prevented from blocking the filter plate, and the soft sealing groove gate valve is convenient to clean. A soft sealing groove gate valve comprises a valve body, a valve cover, a top cover, a valve rod, a hand wheel, a sealing seat ring, a gate plate, a filter plate, a dirt collecting pipe, a sealing end cover and a breast board. According to the utility model, silt impurities in fluid are filtered, so that the flashboard is prevented from being abraded by silt; meanwhile, silt is prevented from blocking the filter plate, and cleaning is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of gate valves, in particular to a soft-sealed trench gate valve. Background Art

[0002] A valve is a pipeline accessory used to open and close pipelines, control the flow direction, regulate and control the parameters of the transported medium. Valves used in fluid control systems range from the simplest stop valve to various valves used in extremely complex automatic control systems, and their varieties and specifications are quite numerous. A gate valve is one of many pipeline valves, mainly used to control the forced stop flow of liquid media in pipelines and is widely used.

[0003] During the use of most existing gate valves, in order to ensure no blockage, a filter screen is generally set at the water inlet end. However, after long-term use, a large amount of sediment and impurities will accumulate on one side of the filter screen, affecting the water flow and causing new blockages. The valve body can only be disassembled to clean the filter screen, which is very inconvenient to use. Therefore, it is urgent to develop a soft-sealed trench gate valve that can filter sediment and impurities in the fluid, avoid abrasion of the gate plate by sediment, and at the same time prevent sediment from blocking the filter plate and facilitate cleaning. Summary of the Utility Model

[0004] In order to overcome the disadvantages that during the use of most existing gate valves, in order to ensure no blockage, a filter screen is generally set at the water inlet end. However, after long-term use, a large amount of sediment and impurities will accumulate on one side of the filter screen, affecting the water flow and causing new blockages. The valve body can only be disassembled to clean the filter screen, which is very inconvenient to use. The technical problem to be solved by the utility model is to provide a soft-sealed trench gate valve that can filter sediment and impurities in the fluid, avoid abrasion of the gate plate by sediment, and at the same time prevent sediment from blocking the filter plate and facilitate cleaning.

[0005] The utility model is achieved by the following specific technical means:

[0006] A soft-sealed trench gate valve includes a valve body, and a water passing hole is arranged in the center of the valve body; a valve cover is fixedly installed at the upper end of the valve body; a top cover is fixedly installed at the upper end of the valve cover; a valve rod is rotatably installed on the valve cover and the top cover; the lower end of the valve rod is connected with a gate plate; the upper end of the valve rod is connected with a handwheel; a sealing seat ring that is hermetically matched with the gate plate is fixedly arranged in the water passing hole of the valve body;

[0007] A filter plate for filtering sediment is also fixedly arranged in the water passing hole of the valve body; a sewage collecting pipe fixedly connected with the valve body is arranged at the lower end of the filter plate, and a hole communicating with the water passing hole of the valve body is arranged in the center of the sewage collecting pipe; the hole arranged in the sewage collecting pipe is located on the side of the filter plate away from the gate plate; the lower end of the sewage collecting pipe is fixedly connected with a sealing end cover through bolts; a baffle for preventing sediment from flowing back is also fixedly arranged on the inner wall of the hole arranged in the center of the sewage collecting pipe.

[0008] Further, there are two filter plates, sewage collection pipes and sealing end caps, which are respectively arranged on both sides of the gate plate arranged in the water passing hole of the valve body; through the filter plates, sewage collection pipes and sealing end caps arranged on both sides, the water flow can be filtered no matter which end of the valve body it flows in from, increasing the practicability of the valve.

[0009] Further, a sealing rubber pad is arranged at the connection between the sewage collection pipe and the sealing end cap; the sealing performance is increased to prevent leakage at the connection between the sewage collection pipe and the sealing end cap.

[0010] Further, the filter plate is arranged obliquely, with the lower end closer to the gate plate than the upper end, and the sewage collection pipe and the sealing end cap are also arranged obliquely relative to the filter plate; the inclined arrangement of the filter plate enables the filtered sediment to concentrate obliquely downward under the impact of the water flow, and the inclined arrangement of the sewage collection pipe and the sealing end cap facilitates the collection and treatment of the sediment.

[0011] Further, a number of filter holes are evenly arranged at equal intervals on the filter plate; through the arranged filter holes, it is convenient to filter the sediment impurities in the water flow.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model achieves the effect of filtering the sediment impurities in the fluid, avoiding the wear of the gate plate caused by the sediment; at the same time, preventing the sediment from blocking the filter plate and facilitating cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view structural schematic diagram of the utility model.

[0015] Figure 2 is the sectional view structural schematic diagram of the utility model.

[0016] The reference signs in the drawings are: 1-valve body, 2-valve cover, 3-top cover, 4-valve rod, 5-hand wheel, 6-sealing seat ring, 7-gate plate, 8-filter plate, 9-sewage collection pipe, 10-sealing end cap, 11-railing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the utility model with reference to the drawings: Embodiment

[0018] A soft-sealing trench gate valve, as Figure 1-2 shown, includes a valve body 1, a water passing hole is arranged in the center of the valve body 1; a valve cover 2 is fixedly installed at the upper end of the valve body 1; a top cover 3 is fixedly installed at the upper end of the valve cover 2; a valve rod 4 is rotatably installed on the valve cover 2 and the top cover 3; the lower end of the valve rod 4 is connected with a gate plate 7; the upper end of the valve rod 4 is connected with a hand wheel 5; a sealing seat ring 6 that is hermetically matched with the gate plate 7 is fixedly arranged in the water passing hole of the valve body 1;

[0019] A filter plate 8 for filtering sediment is fixedly arranged in the water passage hole of the valve body 1; a sewage collecting pipe 9 fixedly connected to the valve body 1 is arranged at the lower end of the filter plate 8, and a hole communicating with the water passage hole of the valve body 1 is arranged in the center of the sewage collecting pipe 9; the hole arranged in the sewage collecting pipe 9 is located on the side of the filter plate 8 away from the gate plate 7; a sealing end cover 10 is fixedly connected to the lower end of the sewage collecting pipe 9 by bolts; a baffle 11 for preventing sediment from flowing back is fixedly arranged on the inner wall of the hole arranged in the center of the sewage collecting pipe 9.

[0020] Working principle:

[0021] For the gate valve of the present utility model, filter plates 8 are arranged on both sides of the gate plate 7 arranged in the central water passage hole of the valve body 1, and a plurality of filter holes evenly arranged at equal intervals on the filter plates 8 filter sediment impurities in the water flow; prevent the sediment impurities in the water flow from wearing the gate plate 7, thereby affecting the sealing performance of the valve; at the same time, the filter plates 8 are inclined, and the lower end is closer to the gate plate 7 than the upper end, so that the filtered sediment impurities can be concentrated obliquely downward under the impact of the water flow, preventing the sediment impurities from accumulating on the filter plates 8 and causing blockage of the filter plates 8; and a sewage collecting pipe 9 and a sealing end cover 10 inclined relative to the filter plates 8 are arranged below the filter plates 8, and the filtered sediment impurities can enter the sewage collecting pipe 9 and the sealing end cover 10 under the guidance of the filter plates 8 for concentration, preventing the sediment impurities from accumulating in the water passage hole and affecting the water flow; at the same time, after long-term use, when the valve needs to be cleaned, the sediment impurities in the sewage collecting pipe 9 and the sealing end cover 10 can be cleaned and discharged by opening the sealing end cover 10, and at the same time, a spray gun can be inserted into the water passage hole of the valve body 1 through the sewage collecting pipe 9 to wash and clean the filter plates 8 in the water passage hole of the valve body 1, achieving the effect of quickly and conveniently cleaning the filter plates 8.

[0022] Although the present disclosure has been described in detail with reference to exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes can be made without departing from the scope of the present disclosure.

Claims

1. A soft-sealed groove gate valve, comprising a valve body (1), the valve body (1) being provided with a water-through hole at its center; a valve cover (2) being fixedly mounted on the upper end of the valve body (1); a top cover (3) being fixedly mounted on the upper end of the valve cover (2); a valve stem (4) being rotatably mounted on the valve cover (2) and the top cover (3); a gate plate (7) being connected to the lower end of the valve stem (4); a hand wheel (5) being connected to the upper end of the valve stem (4); a sealing seat ring (6) being fixedly mounted in the water-through hole of the valve body (1) and being in sealing cooperation with the gate plate (7); It is characterized in that A filter plate (8) for filtering mud and sand is also fixedly arranged in the water hole of the valve body (1); a sewage collecting pipe (9) fixedly connected to the valve body (1) is arranged at the lower end of the filter plate (8); a hole communicating with the water hole of the valve body (1) is arranged at the center of the sewage collecting pipe (9); the hole of the sewage collecting pipe (9) is located on a side of the filter plate (8) away from the gate plate (7); a sealing end cover (10) is fixedly connected to the lower end of the sewage collecting pipe (9) by bolts; and a baffle (11) for preventing mud and sand from flowing back is also fixedly arranged on the inner wall of the hole arranged at the center of the sewage collecting pipe (9).

2. A soft seal groove gate valve according to claim 1, characterized in that: The filter plate (8), the sewage collecting pipe (9) and the sealing end cover (10) are each provided in pairs, and are respectively arranged on both sides of the gate plate (7) provided in the water through hole of the valve body (1).

3. A soft-seal groove gate valve according to claim 1, characterized in that: A sealing rubber pad is provided at the connection between the sewage collecting pipe (9) and the sealing end cover (10).

4. A soft-sealed groove gate valve according to claim 1, characterized in that: The filter plate (8) is arranged at an angle, with the lower end being closer to the gate plate (7) than the upper end, and the sewage collecting pipe (9) and the sealing end cover (10) are also arranged at an angle relative to the filter plate (8).

5. A soft-sealed groove gate valve according to claim 1, characterized in that: The filter plate (8) is provided with a plurality of filter holes which are evenly spaced.

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