Anti-cavitation gate valve

Abstract

The utility model discloses an anti-cavitation gate valve which comprises a main body, a valve groove is formed in the middle of the main body, a valve plate is arranged in the valve groove, the top of the main body is connected with an inverted cylinder through a bolt, a through groove matched with the valve plate is formed in the top of an inner cavity of the valve groove, and a valve rod is connected to the top of the valve plate. A threaded hole matched with the valve rod is formed in the top of an inner cavity of the inverted barrel, the top of the valve rod penetrates through the through groove and the threaded hole to be connected with a handle, an S-shaped groove and an N-shaped groove are formed in the left side and the right side of the main body correspondingly, the right end of the S-shaped groove communicates with an inclined pipe, and the top and the bottom of the inclined pipe are both closed. An inclined groove is connected between the inclined pipe and the valve groove in a communicating mode. According to the technical scheme, the inclined pipe, the inclined groove, the S-shaped groove, the N-shaped groove and the like are matched with one another, so that fluid can be effectively buffered, the impact force of the fluid can be effectively reduced, and the anti-cavitation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-cavitation gate valves, in particular to an anti-cavitation gate valve. Background Art

[0002] Cavitation, also known as cavitation, refers to the phenomenon of cave-like corrosion damage on the metal surface in contact with the fluid under conditions of high-speed flow and pressure changes. It often occurs at the valve core position of the gate valve. The anti-cavitation gate valve in the existing technology cannot effectively buffer the fluid during use, thereby failing to effectively reduce the impact force of the fluid and reducing its anti-cavitation efficiency. Therefore, we propose an anti-cavitation gate valve. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an anti-cavitation gate valve which can effectively buffer the fluid, thereby effectively reducing the impact force of the fluid and improving its anti-cavitation efficiency.

[0004] To achieve the above-mentioned purpose, an anti-cavitation gate valve is provided, including a main body, a valve groove is provided in the middle position of the main body, and a valve plate is arranged in the valve groove, the top of the main body is connected to an inverted cylinder by bolts, and the top of the inner cavity of the valve groove is provided with a through groove matching the valve plate, the top of the valve plate is connected to a valve stem, and the top of the inner cavity of the inverted cylinder is provided with a threaded hole matching the valve stem, and the top of the valve stem is connected with a handle through the through groove and the threaded hole, an S-shaped groove and an N-shaped groove are respectively provided on the left and right sides of the main body, and the right end of the S-shaped groove is connected to an inclined tube, and the top and bottom of the inclined tube are both closed, the inclined tube is connected to the valve groove by an inclined groove, the N-shaped groove is connected to the valve groove by a guide groove, the left side of the S-shaped groove and the right side of the N-shaped groove are connected to a docking pipe, and the end of the docking pipe away from the valve groove extends to the outside of the main body.

[0005] According to the anti-cavitation gate valve, one end of the butt joint pipe away from the main body is connected to two thin tubes, and the two thin tubes are symmetrically arranged up and down with the central axis of the butt joint pipe as the symmetry axis.

[0006] According to the anti-cavitation gate valve, the top of the inclined tube passes through the main body and extends to the top of the main body.

[0007] According to the anti-cavitation gate valve, the ends of the two thin tubes away from the butt-joint tube are connected to the same plug-in tube.

[0008] According to the anti-cavitation gate valve, a sealing ring is sleeved on the inner wall of the through groove, and the sealing ring matches the valve plate.

[0009] According to the anti-cavitation gate valve, the connection between the guide groove and the N-shaped groove is arranged in an arc shape.

[0010] According to the anti-cavitation gate valve, an outer wall of the valve stem is provided with an external thread matching the threaded hole.

[0011] The above scheme has at least one of the following beneficial effects: the technical scheme can effectively buffer the fluid through the mutual cooperation between the inclined tube, inclined groove, S-shaped groove and N-shaped groove, thereby effectively reducing the impact force of the fluid and improving its anti-cavitation efficiency.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 It is a main perspective view of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure;

[0016] Figure 3 for Figure 1 A in the enlarged view;

[0017] Figure 4 for Figure 1 A partial three-dimensional view of the middle valve plate, valve stem and other components.

[0018] Legend:

[0019] 1. Main body; 2. Butt tube; 3. Inverted cylinder; 4. Valve stem; 5. Handle; 6. Oblique tube; 7. Capillary tube; 8. Plug-in tube; 9. S-shaped groove; 10. Oblique groove; 11. Valve groove; 12. Valve plate; 13. Guide groove; 14. N-shaped groove; 15. Sealing ring; 16. Through groove. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figures 1 to 4The utility model embodiment is an anti-cavitation gate valve, which includes a main body 1, a valve groove 11 is opened in the middle position of the main body 1, and a valve plate 12 is arranged in the valve groove 11, the top of the main body 1 is connected to the inverted cylinder 3 by bolts, and the top of the inner cavity of the valve groove 11 is opened with a through groove 16 matching the valve plate 12, the top of the valve plate 12 is connected with a valve stem 4, and the top of the inner cavity of the inverted cylinder 3 is opened with a threaded hole matching the valve stem 4, and the top of the valve stem 4 is connected with a handle 5 through the through groove 16 and the threaded hole, and the outer wall of the valve stem 4 is opened with an external thread matching the threaded hole, and the left side of the main body 1 is connected with the inverted cylinder 3. An S-shaped groove 9 and an N-shaped groove 14 are respectively provided on the right two sides, and the right end of the S-shaped groove 9 is connected to the inclined tube 6, and the top and bottom of the inclined tube 6 are both closed. The top of the inclined tube 6 passes through the main body 1 and extends to the top of the main body 1. The inclined tube 6 is connected to the valve groove 11 with an inclined groove 10, and the N-shaped groove 14 is connected to the valve groove 11 with a guide groove 13. The connection between the guide groove 13 and the N-shaped groove 14 is an arc-shaped setting. The left side of the S-shaped groove 9 and the right side of the N-shaped groove 14 are both connected to the docking tube 2, and the end of the docking tube 2 away from the valve groove 11 extends to the outside of the main body 1.

[0022] The end of the butt joint 2 away from the main body 1 is connected to two thin tubes 7, which are symmetrically arranged up and down with the central axis of the butt joint 2 as the symmetry axis, and the two thin tubes 7 are connected to the same plug-in tube 8 at the end away from the butt joint 2. Through this structure, the fluid can be effectively buffered, thereby effectively reducing the impact force of the fluid and improving its anti-cavitation efficiency.

[0023] In the present technical solution, the S-shaped groove 9 and the N-shaped groove 14 can be set at a small angle to ensure the normal circulation of the fluid, and the drawings in the specification of the present technical solution are structural schematic diagrams for better displaying the structure, and their specific dimensions and sizes can be set according to actual conditions.

[0024] A sealing ring 15 is sleeved on the inner wall of the through groove 16, and the sealing ring 15 matches the valve plate 12. Through this structure, leakage can be effectively prevented.

[0025] Working principle: When in use, this technical solution is first installed and docked through two plug-in tubes 8, and the handle 5 is turned clockwise or counterclockwise. The handle 5 drives the valve stem 4 to rotate clockwise or counterclockwise, and the valve stem 4 drives the valve plate 12 to move up and down to achieve opening or closing. The plug-in tube 8 on the left side guides the fluid into the S-shaped groove 9 through two thin tubes 7 and the docking tube 2 on the left side. The S-shaped groove 9 guides the fluid into the inclined tube 6, and enters the valve groove 11 through the inclined groove 10, and then guides it into the N-shaped groove 14 through the guide groove 13, and flows out from the docking tube 2, thin tube 7 and plug-in tube 8 on the right side, so that it can effectively buffer the fluid, thereby effectively reducing the impact force of the fluid and improving its anti-cavitation efficiency.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An anti-cavitation gate valve, characterized in that: include: A main body (1), wherein a valve groove (11) is provided at a middle position of the main body (1), and a valve plate (12) is arranged in the valve groove (11), the top of the main body (1) is connected to the inverted cylinder (3) by bolts, and the top of the inner cavity of the valve groove (11) is provided with a through groove (16) matching the valve plate (12), the top of the valve plate (12) is connected to the valve stem (4), and the top of the inner cavity of the inverted cylinder (3) is provided with a threaded hole matching the valve stem (4), and the top of the valve stem (4) is connected to a handle (5) through the through groove (16) and the threaded hole, and the main body (1 ) are respectively provided with an S-shaped groove (9) and an N-shaped groove (14), and the right end of the S-shaped groove (9) is connected to an inclined tube (6), and the top and bottom of the inclined tube (6) are both closed, the inclined tube (6) and the valve groove (11) are connected to an inclined groove (10), the N-shaped groove (14) and the valve groove (11) are connected to a guide groove (13), the left side of the S-shaped groove (9) and the right side of the N-shaped groove (14) are both connected to a butt joint tube (2), and the end of the butt joint tube (2) away from the valve groove (11) extends to the outside of the main body (1).

2. The anti-cavitation gate valve according to claim 1, characterized in that: The end of the butt joint pipe (2) away from the main body (1) is connected to two thin tubes (7), and the two thin tubes (7) are symmetrically arranged in the upper and lower parts with the central axis of the butt joint pipe (2) as the symmetry axis.

3. The anti-cavitation gate valve according to claim 1, characterized in that: The top of the inclined tube (6) passes through the main body (1) and extends to the top of the main body (1).

4. The anti-cavitation gate valve according to claim 2, characterized in that: The ends of the two thin tubes (7) that are away from the butt-joint tube (2) are connected to the same plug-in tube (8).

5. The anti-cavitation gate valve according to claim 1, characterized in that: A sealing ring (15) is sleeved on the inner wall of the through groove (16), and the sealing ring (15) matches the valve plate (12).

6. The anti-cavitation gate valve according to claim 1, characterized in that: The connection between the guide groove (13) and the N-shaped groove (14) is arranged in an arc shape.

7. The anti-cavitation gate valve according to claim 1, characterized in that: The outer wall of the valve stem (4) is provided with an external thread matching the threaded hole.

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