A linkage-driven slide gate valve structure

Abstract

A linkage-driven slide gate valve structure includes a valve seat, a valve plate, a linear actuator, and a linkage assembly. The valve seat has a valve cavity, an inlet connecting the front side of the valve cavity, and an outlet connecting the rear side of the valve cavity. The linear actuator is positioned above the valve seat and has a telescopic rod extending downward to the upper part of the valve cavity. When the linear actuator drives the telescopic rod to move up and down, the telescopic rod drives a first support rod and a second support rod to rotate relative to each other through a first short rod and a second short rod in the linkage assembly. This, in turn, causes a first push rod and a second push rod to rotate relative to each other, moving the valve plate between the inlet and the outlet. This design uses the first and second short rods to convert the small up-and-down movement of the telescopic rod into a large relative rotation of the first and second support rods through leverage, ultimately driving a large up-and-down movement of the valve plate. Therefore, only a linear actuator with a small stroke is needed to achieve long-distance movement of the valve plate, effectively reducing the overall size.

Description

Technical Field

[0001] This utility model relates to the technical field of slide gate valves, and more specifically to a linkage-driven slide gate valve structure. Background Technology

[0002] Gate valves (or slide gate valves) are key devices in industrial pipeline systems used to cut off or regulate fluid flow, especially suitable for applications involving solid particles, slurries, or high-temperature media. Their basic working principle involves a cylinder or other drive mechanism that moves a flat valve plate in a straight line perpendicular to the fluid flow direction, inserting or withdrawing it between the inlet and outlet of the valve seat, thereby regulating the flow rate in the pipeline.

[0003] However, for some pipelines with large flow rates, the inlet and outlet dimensions of the valve seat often need to be designed to be larger. In this case, a larger valve plate and a long-stroke drive mechanism that can drive the valve plate to move a long distance are required. However, long-stroke drive mechanisms such as cylinders often occupy a lot of space, resulting in an excessively large overall size of the slide gate valve, which affects its use. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the prior art, for some pipelines with large flow rates, the inlet and outlet dimensions of the valve seat often need to be designed to be large. In this case, a large valve plate and a long-stroke drive mechanism that can drive the valve plate to move a long distance are required. However, long-stroke drive mechanisms such as cylinders often occupy a lot of space, resulting in the overall size of the slide gate valve being too large.

[0005] To address the aforementioned problems, this utility model provides a linkage-driven slide gate valve structure, comprising a valve seat, a valve plate, a linear actuator, and a linkage assembly. The valve seat has a valve cavity, an inlet communicating with the front side of the valve cavity, and an outlet communicating with the rear side of the valve cavity. The linear actuator is disposed above the valve seat and has a telescopic rod extending downward to the upper part of the valve cavity. The linkage assembly is located within the valve cavity and includes: The first support rod and the second support rod are respectively hinged to the upper wall of the valve cavity, and the upper ends of the first support rod and the second support rod are respectively located on the left and right sides of the telescopic rod, and the lower middle parts of the first support rod and the second support rod intersect each other. The first push rod and the second push rod have their upper ends hinged to the lower ends of the first support rod and the second support rod, respectively, and their middle parts intersect each other. The lower ends of the first push rod and the second push rod are respectively hinged to the left and right parts of the valve plate. The first short rod and the second short rod are shorter than the first support rod and the second support rod. The upper ends of the first short rod and the second short rod are both hinged to the telescopic rod. The lower end of the first short rod is hinged to the upper middle part of the first push rod, and the lower end of the second short rod is hinged to the upper middle part of the second support rod. When the linear drive unit moves the telescopic rod up and down, the telescopic rod drives the first support rod and the second support rod to rotate relative to each other through the first short rod and the second short rod, thereby causing the first push rod and the second push rod to rotate relative to each other, and causing the valve plate to move in / out between the inlet and the outlet.

[0006] Compared with existing technologies, the above solution designs a linkage assembly. Since the lengths of the first and second short rods are smaller than those of the first and second support rods, the first and second short rods can convert the small vertical movement of the telescopic rod into a large relative rotation of the first and second support rods through the lever principle. Consequently, the first and second push rods can also form a large relative rotation, ultimately driving the valve plate to move up and down significantly. Thus, only a linear drive component with a small stroke is needed to achieve long-distance movement of the valve plate, effectively reducing the overall size.

[0007] In an improved embodiment, the valve cavity is provided with a vertical guide rail, and the valve plate is provided with a slider that slides onto the guide rail. This allows the guide rail and slider to guide the valve plate, ensuring smoother movement of the valve plate.

[0008] In an improved embodiment, there are two guide rails located on the left and right sides of the valve cavity, respectively. The left and right sides of the valve plate are respectively provided with sliders that slide to the two guide rails, thereby further improving the stability of the valve plate during movement.

[0009] In an improved embodiment, the linear drive component is a cylinder, the cylinder body is connected above the valve seat and the output end is set downwards, the telescopic rod is connected to the output end of the cylinder, and the top wall of the valve seat has a through hole along the vertical direction for the telescopic rod to pass through, resulting in good structural reliability.

[0010] In an improved embodiment, a water-cooling chamber is provided on the outer side of the valve seat. The water-cooling chamber has an inlet and an outlet, so that the water-cooling chamber achieves circulating water cooling through the inlet and outlet, thereby realizing the cooling function of the valve seat.

[0011] In an improved design, the water inlet is located at the upper part of the water-cooling cavity, and the water outlet is located at the lower part of the water-cooling cavity. This allows the cooler water entering through the water inlet to automatically flow downwards and out through the water outlet, resulting in better cooling. Attached Figure Description

[0012] Figure 1This is a schematic cross-sectional view of a linkage-driven slide gate valve structure. Figure 2 This is a top view schematic diagram of a linkage-driven slide gate valve structure.

[0013] Explanation of reference numerals in the attached figures. 1. Valve seat; 11. Valve chamber; 12. Inlet; 13. Outlet; 14. Guide rail; 15. Through hole; 2. Valve plate; 21. Slider; 3. Linear drive component; 31. Telescopic rod; 4. Linkage assembly; 41. First support rod; 42. Second support rod; 43. First push rod; 44. Second push rod; 45. First short rod; 46. Second short rod; 5. Water cooling chamber; 51. Water inlet; 52. Drain outlet. Detailed Implementation

[0014] It should be understood by those skilled in the art that the following embodiments are merely illustrative of the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0015] In the following description of the embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0016] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0017] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Please see Figure 1 and Figure 2The present invention provides a linkage-driven slide gate valve structure, comprising a valve seat 1, a valve plate 2, a linear drive 3, and a linkage assembly 4. The valve seat 1 has a valve cavity 11, an inlet 12 communicating with the front side of the valve cavity 11, and an outlet 13 communicating with the rear side of the valve cavity 11. The linear drive 3 is disposed above the valve seat 1 and has a telescopic rod 31 extending downward to the upper part of the valve cavity 11. The linkage assembly 4 is located inside the valve cavity 11 and includes: The first support rod 41 and the second support rod 42 are respectively hinged to the upper wall of the valve cavity 11, and the upper ends of the first support rod 41 and the second support rod 42 are respectively located on the left and right sides of the telescopic rod 31, and the lower middle parts of the first support rod 41 and the second support rod 42 intersect each other. The upper ends of the first push rod 43 and the second push rod 44 are respectively hinged to the lower ends of the first support rod 41 and the second support rod 42, and the middle parts of the first push rod 43 and the second push rod 44 cross each other. The lower ends of the first push rod 43 and the second push rod 44 are respectively hinged to the left and right parts of the valve plate 2. The first short rod 45 and the second short rod 46 are shorter than the first support rod 41 and the second support rod 42. The upper ends of the first short rod 45 and the second short rod 46 are both hinged to the telescopic rod 31. The lower end of the first short rod 45 is hinged to the upper middle part of the first push rod 43, and the lower end of the second short rod 46 is hinged to the upper middle part of the second support rod 42. When the linear drive 3 drives the telescopic rod 31 to move up and down, the telescopic rod 31 drives the first support rod 41 and the second support rod 42 to rotate relative to each other through the first short rod 45 and the second short rod 46, which in turn causes the first push rod 43 and the second push rod 44 to rotate relative to each other, thereby driving the valve plate 2 to move into / out of the inlet 12 and the outlet 13.

[0019] More specifically, when the above scheme is used, if the linear drive 3 drives the telescopic rod 31 to move downward, the first short rod 45 and the second short rod 46 will spread the upper middle parts of the first support rod 41 and the second support rod 42 apart, and the lower ends of the first support rod 41 and the second support rod 42 will move closer to each other, causing the upper ends of the first push rod 43 and the second push rod 44 to move closer to each other, that is, the first push rod 43 and the second push rod 44 will gradually tend to be vertical. At this time, the valve plate 2 will be pushed downward and moved into the position between the inlet 12 and the outlet 13. The position achieves blocking; if the linear drive 3 drives the telescopic rod 31 to move upward, the first short rod 45 and the second short rod 46 will close the upper middle part of the first support rod 41 and the second support rod 42, and the lower end of the first support rod 41 and the lower end of the second support rod 42 will move away from each other, causing the upper ends of the first push rod 43 and the second push rod 44 to move away from each other, that is, the vertical tilt angle of the first push rod 43 and the second push rod 44 increases. At this time, the valve plate 2 is pushed upward and moved out of the position between the inlet 12 and the outlet 13 to achieve conduction.

[0020] Compared with the prior art, the above solution designs a linkage assembly 4. Since the lengths of the first short rod 45 and the second short rod 46 are smaller than those of the first support rod 41 and the second support rod 42, the first short rod 45 and the second short rod 46 can convert the small vertical movement of the telescopic rod 31 into a large relative rotation of the first support rod 41 and the second support rod 42 through the lever principle. Consequently, the first push rod 43 and the second push rod 44 can also form a large relative rotation, ultimately driving the valve plate 2 to move up and down significantly. Thus, only a linear drive component 3 with a small stroke is needed to achieve long-distance movement of the valve plate 2, effectively reducing the overall size.

[0021] As an improvement to this embodiment, the valve cavity 11 is provided with a vertical guide rail 14, and the valve plate 2 is provided with a slider 21 that slides to the guide rail 14. Thus, the guide rail 14 and the slider 21 work together to guide the valve plate 2, ensuring that the movement of the valve plate 2 is more stable.

[0022] Furthermore, there are two guide rails 14, located on the left and right sides of the valve cavity 11 respectively. The left and right sides of the valve plate 2 are respectively provided with sliders 21 that are slidably engaged with the two guide rails 14, thereby further improving the stability of the valve plate 2 when it moves.

[0023] In this embodiment, the linear drive 3 is a cylinder. The cylinder body is connected above the valve seat 1 and the output end is set downward. The telescopic rod 31 is connected to the output end of the cylinder. The top wall of the valve seat 1 has a through hole 15 for the telescopic rod 31 to pass through in the vertical direction. The structure has good reliability.

[0024] As another improvement to this embodiment, a water-cooling chamber 5 is provided on the outer side of the valve seat 1. The water-cooling chamber 5 has a water inlet 51 and a water outlet 52, so that the water-cooling chamber 5 achieves circulating water cooling through the water inlet 51 and the water outlet 52, thereby realizing the cooling function of the valve seat 1.

[0025] Furthermore, the water inlet 51 is located at the upper part of the water-cooling cavity 5, and the water outlet 52 is located at the lower part of the water-cooling cavity 5, so that the cooler water entering through the water inlet 51 can automatically flow downward and out through the water outlet 52, resulting in better cooling effect.

[0026] It should be noted that in the description of this application, the terms "inner" and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. All directional indications (such as up, down, left, right, front, back, inner, and outer) are only used to explain the relative positional relationships and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A linkage-driven flapper valve structure, characterized by, The valve assembly includes a valve seat, a valve plate, a linear actuator, and a connecting rod assembly. The valve seat has a valve cavity, an inlet communicating with the front side of the valve cavity, and an outlet communicating with the rear side of the valve cavity. The linear actuator is disposed above the valve seat and has a telescopic rod extending downward to the upper part of the valve cavity. The connecting rod assembly is located inside the valve cavity and includes: The first support rod and the second support rod are respectively hinged to the upper wall of the valve cavity, and the upper ends of the first support rod and the second support rod are respectively located on the left and right sides of the telescopic rod, and the lower middle parts of the first support rod and the second support rod intersect each other. The first push rod and the second push rod have their upper ends hinged to the lower ends of the first support rod and the second support rod, respectively, and their middle parts intersect each other. The lower ends of the first push rod and the second push rod are respectively hinged to the left and right parts of the valve plate. The first short rod and the second short rod are shorter than the first support rod and the second support rod. The upper ends of the first short rod and the second short rod are both hinged to the telescopic rod. The lower end of the first short rod is hinged to the upper middle part of the first push rod, and the lower end of the second short rod is hinged to the upper middle part of the second support rod. When the linear drive unit drives the telescopic rod to move up and down, the telescopic rod drives the first support rod and the second support rod to rotate relative to each other through the first short rod and the second short rod, thereby causing the first push rod and the second push rod to rotate relative to each other, driving the valve plate to move in / out between the inlet and the outlet; The linear drive component is a cylinder. The cylinder body is connected above the valve seat and the output end is set downward. The telescopic rod is connected to the output end of the cylinder. The top wall of the valve seat has a through hole along the vertical direction for the telescopic rod to pass through.

2. The linkage-driven slide gate valve structure according to claim 1, characterized in that, The valve cavity is provided with a vertical guide rail, and the valve plate is provided with a slider that slides onto the guide rail.

3. The linkage-driven slide gate valve structure according to claim 2, characterized in that, There are two guide rails, located on the left and right sides of the valve cavity respectively, and the left and right sides of the valve plate are respectively provided with sliders that are slidably engaged with the two guide rails.

4. The linkage-driven slide gate valve structure according to claim 1, characterized in that, The valve seat has a water-cooling chamber on its outer side, which has a water inlet and a water outlet.

5. The linkage-driven slide gate valve structure according to claim 4, characterized in that, The water inlet is located at the upper part of the water-cooling cavity, and the water outlet is located at the lower part of the water-cooling cavity.

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