Special valve with valve element not bearing pressure in fluid flowing direction

Abstract

The invention discloses a special valve with a valve element not bearing pressure in the flowing direction of fluid. The valve is composed of a valve body and the valve element. A valve element of the special valve is different from a valve element of a conventional valve and is composed of a movable valve element body and a static valve element body, the static valve element body mainly bears component force in the fluid flowing direction, and the movable valve element body mainly cooperates with the static valve element body to open and close a fluid flowing path and does not bear or slightly bear the component force in the fluid flowing direction. Therefore, the requirements on the strength, the rigidity, the stroke and the like borne by the movable valve core during operation are greatly reduced, and the opening and closing performance, the sensitivity, the sealing performance, the reliability and the safety of the whole valve are improved.

Description

Technical Field

[0001] This invention belongs to the field of valves, and more specifically relates to a special valve in which the valve core does not bear pressure in the direction of fluid flow. Background Technology

[0002] Many types of valves, such as slide gate valves, knife valves, and butterfly valves, are used in equipment used in chemical material production processes to control the flow of materials. These common valves typically have their valve bodies fixed in a fixed position during operation, with the entire valve core moving to complete the process. However, since these valve cores mostly open and close from the cross-sectional direction of the material flow, the valve core surface experiences a significant vertical force from the material flow direction. This can easily lead to problems such as high energy consumption, excessive wear, and poor sealing during valve core operation. To address these shortcomings of common valves, this invention proposes a special valve whose valve core does not bear pressure in the direction of fluid movement, thus optimizing production applications in material switching control. Summary of the Invention

[0003] This invention provides a special valve whose valve core does not bear pressure in the direction of fluid movement. Using materials of the same strength, it has a longer service life than ordinary valves and can adapt to the throttling of a wider variety of materials. This special valve mainly consists of a valve body and a valve core. The valve core mainly comprises two parts: a moving valve core and a stationary valve core. The stationary valve core primarily bears the component force in the direction of fluid flow, while the moving valve core mainly works with the stationary valve core to open and close the fluid flow path, bearing little or no component force in the direction of fluid flow. Static valve core: It statically bears all or most of the component force in the direction of fluid flow. The static valve core does not move during the entire valve opening and closing process, and is therefore very easy to design and manufacture.

[0004] Moving valve core: It does not bear or only bears a small component of the force in the direction of fluid flow. It uses its own movement to cooperate with the stationary valve core to open and close the valve or change the flow trajectory of the fluid.

[0005] Furthermore, the moving valve core of the special valve is a cylindrical body, the axis of which is consistent with the direction of fluid flow.

[0006] Furthermore, the stationary valve core of the special valve is conical, spherical, planar, or inverted conical, wherein the conical direction of the conical core is consistent with the axial direction of the moving valve core.

[0007] Furthermore, the moving valve core and valve body of the special valve are sealed on one side or both sides.

[0008] Furthermore, in the special valve, an inner edge is added inside the valve body to block the head of the moving valve core (facing the fluid direction) at the junction of the valve body and the moving valve core, so that the fluid does not directly hit the moving valve core.

[0009] Furthermore, the driving source for the moving valve core of the special valve is manual, electric, or pneumatic.

[0010] Furthermore, the special valve is equipped with a sealing device at the junction or contact point between the moving valve core and the stationary valve core.

[0011] Furthermore, the cross-sectional shape of the moving valve core of the special valve is either a regular shape or an irregular shape; the vertical surface of the moving valve core is in the same direction as the fluid flow or at an angle to it. Attached Figure Description

[0012] Figure 1 Schematic diagram of the external shape of a special valve; Figure 2 Vertical sectional view of a special valve; Figure 3 Schematic diagram of a special valve body; Figure 4 Schematic diagram of the moving valve core of a special valve; Figure 5 Schematic diagram of the static valve core of a special valve; Diagram description 1 Valve body (valve housing), 11 Valve core groove, 12 Linear guide rail, 13 Upper positioning on linear guide rail, 14 Lower positioning on linear guide rail, 15 Inner edge; 2 Moving valve core, 21 Moving valve core sealing ring, 22 Moving valve core meshing port with linear guide rail; 3 Stationary valve core, 31 Stationary valve core sealing structure, 32 Conical stationary valve core, 33 Inverted conical stationary valve core, 34 Ball-shaped stationary valve core, 35 Planar stationary valve core; 4 Connecting components; 5 Special valve drive source. Detailed Implementation Plan

[0013] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0014] This invention provides a special valve in which the valve core does not bear pressure in the direction of fluid movement. Figure 1 It can be understood that a special valve consists of a valve body (valve housing) 1, a moving valve core 2, a stationary valve core 3, connecting components 4, and a special valve drive source 5. Figure 2The vertical cross-sectional view of the special valve shows that the valve body (valve shell) 1 is hollow, forming the valve core groove 11 for the moving valve core 2. A linear guide rail 12 is positioned appropriately on the outer structure of the valve body. A linear guide rail upper positioning 13 and a linear guide rail lower positioning 14 are respectively installed on the upper and lower parts of the linear guide rail 12. The moving valve core 2 is embedded in the valve core groove 11 of the valve body 1. One end of the connecting component 4 passes through the linear guide rail 12 and is securely connected to the moving valve core 2; the other end of the connecting component 4 is connected to the special valve drive source 5. When the drive source 5 operates, it drives the connecting component 4 to move along the linear guide rail 12, thereby driving the moving valve core 2 to perform the valve opening and closing operation. A valve core engagement port 22 is provided on the upper part of the moving valve core 2, aligned with the linear guide rail 12. This port reinforces the fit between the moving valve core 2 and the valve body 1 and provides a seal when the special valve is closed. Furthermore, a valve core sealing ring 21 is provided at the lower part of the moving valve core, ensuring a good seal between the moving valve core 2 and the valve body 1 when the valve is open. A sealing structure 31 is provided around the edge of the stationary valve core 3 to ensure good sealing performance of the special valve when closed.

[0015] The features of this invention are as follows: the static valve core 3 is in a stationary state, bearing all or most of the force in the direction of fluid flow in a balanced and uniform manner, and does not move during the entire valve opening and closing process, thus making it very easy to design and manufacture; the moving valve core 2 does not bear or only bears a small amount of force in the direction of fluid flow, and uses its own movement to cooperate with the static valve core 3 to realize the opening and closing of the valve, or to change the flow trajectory of the fluid.

[0016] Special valves can be used with various equipment. The moving valve core 2 shown in the attached diagram is a cylindrical body, with its axis aligned with the fluid flow direction. In other operating conditions, the cross-sectional shape of the moving valve core 2 can be regular or irregular; the vertical surface of the moving valve core 2 can be aligned with the fluid flow direction or have an angle with it. Furthermore, the entire valve body 1 can also be integrated with long-neck flanges, etc., suitable for connection points.

[0017] The stationary valve core 3 can be configured according to the cross-section of the moving valve core 2 as follows: conical 32, spherical 34, planar 35, inverted conical 33, etc., wherein the conical direction is consistent with the axial direction of the moving valve core 2.

[0018] When performing on / off operations, special valves have an inner edge 15 added inside the valve body 1 at the junction of the valve body 1 and the moving valve core 2 to shield the head of the moving valve core (facing the fluid direction), preventing the fluid from directly impacting the moving valve core, i.e., the inner part of the valve body in the figure. Depending on the operating conditions, the inner part of the valve body 1 can also be made into an inner edge 15 shielding structure of a different length than the valve body.

[0019] In addition, when the special valve reaches the open or closed state, the moving valve core 2 and the valve body 1 are sealed by a single-sided or double-sided seal, namely the moving valve core sealing ring 21; the joint or contact part of the moving valve core 2 and the stationary valve core 3 is provided with a sealing device, namely the stationary valve core sealing structure 31.

[0020] The drive source 5 of the special valve can be manual, electric, or pneumatic, and can be flexibly selected according to the specific application environment. The connecting component 4 connected to the drive source 5 can be as shown in the embodiment in the figure, or it can be designed to connect to the drive source on both sides respectively, or the connecting component 4 can be designed on the upper part of the valve body 1, etc. There are many forms, but the purpose is to allow the drive source 5 to move the valve core 2 through the connecting component 4.

[0021] The above description is merely one specific embodiment of the present invention, and its protection scope 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 the embodiments of the present invention should be included within the protection scope of this valve. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A special valve whose valve core does not bear the pressure in the direction of fluid flow. The valve is mainly composed of a valve body and a valve core. The valve core is mainly composed of two parts, namely a moving valve core and a static valve core. The static valve core mainly bears the force in the direction of fluid flow, and the moving valve core mainly cooperates with the static valve core to switch the flow path of the fluid, and does not bear or bears a small amount of force in the direction of fluid flow; The static valve core: statically bears all or most of the force in the direction of fluid flow, and the static valve core does not move during the entire valve opening and closing process; The moving valve core does not bear or only bears a small amount of force in the direction of fluid flow, and cooperates with the static valve core through its own movement to realize the opening and closing of the valve, or change the flow trajectory of the fluid.

2. The special valve according to claim 1, characterized in that: The moving valve core is a cylinder, and its axial direction is consistent with the fluid flow direction.

3. The special valve according to claim 1, characterized in that: The static valve core is in the shape of a cone, a sphere, a plane, or an inverted cone, wherein the cone direction of the cone is consistent with the axial direction of the moving valve core.

4. The special valve according to claim 1, characterized in that: Single-sided sealing or double-sided sealing is adopted between the moving valve core and the valve body.

5. The special valve according to claim 1, characterized in that: An inner edge is added to the housing at the junction of the valve housing and the moving valve core to shield the head of the moving valve core (facing the direction of the fluid) so that the fluid does not directly hit the moving valve core.

6. The special valve according to claim 1, characterized in that: The driving source of the moving valve core is manual, electric or pneumatic.

7. The special valve according to claim 1, characterized in that: A sealing device is provided at the joint or contact portion between the moving valve core and the static valve core.

8. The special valve according to claim 1, characterized in that: The cross-sectional shape of the moving valve core is regular or irregular; the vertical surface of the moving valve core is the same as or at an angle to the flow direction of the fluid.

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