Valve body shifting fork assembly

Abstract

The utility model relates to a valve body shifting fork assembly, and belongs to the technical field of switch valves, the valve body shifting fork assembly comprises an outer cover, a valve rod and a valve plate, and the valve rod and the valve plate are integrally connected; a driving shifting fork linkage structure for driving the valve rod to linearly move up and down is arranged on the outer cover; a sealing protection assembly for protecting the driving shifting fork linkage structure is arranged on the outer cover, and the driving shifting fork linkage structure comprises a driving rotating piece and a shifting fork linkage piece; and the driving rotating piece comprises a micro motor installed on the surface of the outer cover, and a rotating shaft rotating relative to the inner wall of the outer cover is installed at the position of an output shaft of the micro motor. According to the valve body shifting fork assembly and the driving shifting fork linkage structure, the valve plate on the valve rod is driven to move up and down through driving linkage to achieve opening and closing, opening and closing are convenient, meanwhile, the sealing protection assembly carries out sealing protection on the driving shifting fork linkage structure, and the phenomena that the driving shifting fork linkage structure is exposed in air and affected by air components, and corrosion clamping and liquid leakage are caused are avoided.

Description

Technical Field

[0001] This utility model relates to the field of switch valve technology, specifically a valve body fork assembly. Background Technology

[0002] A gate valve is a type of valve used to control fluid flow. It is mainly used to open and close fluid in pipelines. Its working principle is to achieve the flow or blockage of fluid through a gate (or sluice gate) perpendicular to the direction of fluid flow. Gate valves are usually used in fully open or fully closed situations and are not suitable for regulating flow.

[0003] A gate valve consists of a valve body, valve stem, valve plate, and manual operating lever. Operating principle:

[0004] Open the valve:

[0005] The operator rotates the valve stem using a handwheel or handle.

[0006] The rotation of the valve stem causes the valve plate to move upward, opening the fluid passage.

[0007] When the valve plate is fully raised, the fluid can flow freely.

[0008] Close the valve:

[0009] The operator then rotates the handwheel or handle again, usually counterclockwise.

[0010] The rotation of the valve stem causes the valve plate to move downwards, gradually closing the fluid passage.

[0011] When the valve plate is fully depressed, fluid flow is blocked.

[0012] As can be seen from the operation switch of the valve body, it needs to be opened and closed manually. At the same time, the operating rod is exposed to the air, and the influence of air composition can easily cause the operating rod to rust and tighten, making it difficult to open and close, and it is also easy to cause gaps and leakage.

[0013] Therefore, this application designs a valve body shift fork assembly that is convenient to switch on and off and provides airtight protection to solve this deficiency in the prior art. Utility Model Content

[0014] To address the shortcomings of existing technologies, this utility model provides a valve body fork assembly, which has the advantages of convenient switching and airtight protection.

[0015] To achieve the above objectives, this utility model provides the following technical solution: a valve body fork assembly, comprising an outer cover, a valve stem, and a valve plate, wherein the valve stem and the valve plate are integrally connected;

[0016] The outer cover is equipped with a drive fork linkage structure that drives the valve stem to move linearly up and down.

[0017] The outer cover is provided with a sealing and protective component to protect the drive fork linkage structure.

[0018] As a preferred technical solution of this utility model, the drive fork linkage structure includes a drive rotating component and a fork linkage component;

[0019] Drive rotating parts,

[0020] It includes a micro motor mounted on the surface of the outer cover, a rotating shaft that rotates with the inner wall of the outer cover is mounted on the output shaft of the micro motor, and a shift fork rotating seat is mounted on the outside of the rotating shaft.

[0021] The above technical solution facilitates the use of a micro motor to drive rotation and provide power for the linkage of the shift fork.

[0022] As a preferred technical solution of this utility model, the shift fork linkage component...

[0023] It includes a shift fork rod installed on the opposite side of the shift fork rotating seat, a limit hole is formed on the shift fork rod, a shift fork limit block slides in the limit hole, and a shift fork connecting rod connected to the valve rod is installed between the shift fork limit blocks.

[0024] By adopting the above technical solution, it is convenient to move the valve stem up and down through linkage.

[0025] As a preferred embodiment of this utility model, a movable seat is installed on the inner wall of the outer cover, the rotating shaft is connected to the movable seat for rotation, and a controller is installed on the surface of the outer cover.

[0026] By adopting the above technical solution, smooth rotation of the shaft, as well as charging power supply and system control of the equipment can be achieved.

[0027] As a preferred embodiment of this utility model, the valve stem passes vertically through the outer cover, and the outer cover is provided with a limiting through hole for the valve stem to pass through.

[0028] By adopting the above technical solution, the outer cover can restrict the valve stem to move up and down in a straight line through the limiting perforation.

[0029] As a preferred embodiment of this utility model, the sealing and protection assembly includes a cover installed at the opening on the surface of the outer cover and a corrugated telescopic tube installed between the fork connecting rod and the outer cover and located outside the valve stem.

[0030] By adopting the above technical solution, the linkage of the overall structure can be carried out under sealed conditions, preventing corrosion caused by air and affecting the sealing performance.

[0031] As a preferred embodiment of this utility model, the extension and contraction distances of the corrugated telescopic tube are both greater than the vertical movement distance of the valve stem.

[0032] By adopting the above technical solution, the corrugated expansion tube can achieve airtight protection while adaptively expanding and contracting as the valve stem moves up and down.

[0033] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0034] The valve body lever assembly, through a drive lever linkage structure, drives the valve plate on the valve stem to move up and down to open and close, achieving convenient switching. At the same time, the set sealing protection component ensures that the drive lever linkage structure is sealed and protected, preventing exposure to air and the resulting corrosion, jamming, and leakage. Attached Figure Description

[0035] Figure 1 This is a perspective view of the present utility model;

[0036] Figure 2 This is a sectional perspective view of the present invention;

[0037] Figure 3 This utility model Figure 2 A side-view stereoscopic view;

[0038] Figure 4 This is a side perspective view of the present invention;

[0039] Figure 5 This utility model Figure 2 Floor plan;

[0040] Figure 6 This utility model Figure 5 CC section view.

[0041] In the diagram: 1. Outer cover; 2. Cover; 3. Micro motor; 4. Rotating shaft; 5. Shift fork rotating seat; 6. Shift fork rod; 7. Limiting hole; 8. Shift fork limiting block; 9. Shift fork connecting rod; 10. Valve stem; 11. Valve plate; 12. Corrugated telescopic tube; 13. Controller. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figures 1 to 3 In this embodiment, a valve body fork assembly includes an outer cover 1, a valve stem 10, and a valve plate 11, wherein the valve stem 10 and the valve plate 11 are integrally connected.

[0044] The outer cover 1 is a cuboid with an open upper surface. The lower surface of the outer cover 1 is connected to the valve body by a fastening nut and a sealing ring is used to fill the gap for sealing, so that the valve stem 10 and the valve plate 11 are installed in the valve body.

[0045] In this embodiment, the outer cover 1 is provided with a drive fork linkage structure that drives the valve stem 10 to move linearly up and down.

[0046] It should be noted that the drive fork linkage structure includes a drive rotating component and a fork linkage component.

[0047] Drive rotating parts,

[0048] It includes a micro motor 3 that is fixed to the surface of the outer cover 1 by fastening screws, and a rotating shaft 4 that rotates circumferentially with the inner wall of the outer cover 1 is fixed to the output shaft of the micro motor 3 by fastening screws. A fork rotating seat 5 that is concentrically arranged in a cylindrical shape is fixed to the outside of the rotating shaft 4.

[0049] The micro motor 3 has a self-locking function, which is existing technology. It is easy to achieve self-locking after the drive rotates and moves the valve plate 11 through linkage, so as to avoid the movement of the valve plate 11 from affecting the sealing and flow control effect.

[0050] It should be added that the surface of the micro motor 3 is equipped with heat dissipation fins for heat dissipation during operation.

[0051] The shift fork linkage component

[0052] This includes a fork rod 6 that is fixed to the front and rear sides of the fork rotating seat 5 by fastening screws. The surface of the fork rod 6 is provided with a limiting hole 7. A fork limiting block 8 is slidably limited in the limiting hole 6. A fork connecting rod 9 connected to the valve stem 10 is installed between the fork limiting blocks 8.

[0053] The width of the fork limiting block 8 located outside the fork rod 6 is greater than the width of the limiting hole 7.

[0054] A movable seat is installed and fixed on the inner wall of the outer cover 1, and the rotating shaft 4 is connected to the movable seat for circumferential rotation. A controller 13 is installed and fixed on the surface of the outer cover 1.

[0055] It should be added that the surface of the controller 13 is provided with heat dissipation windows to ensure heat dissipation.

[0056] The controller 13 is electrically connected to the micro motor 3. The controller 13 stores electricity to supply power to the micro motor 3 and realizes system control of the controller 13.

[0057] The valve stem 10 passes vertically through the outer cover 1, and the outer cover 1 is provided with a limiting through hole for the valve stem 10 to pass through.

[0058] The limiting perforation has the same diameter as the valve stem 10.

[0059] Please see Figures 4 to 6 In this embodiment, the outer cover 1 is provided with a sealing and protective component to protect the drive fork linkage structure.

[0060] It should be noted that the sealing and protection assembly includes a cover 2 that is fixed to the opening on the surface of the outer cover 1 by fastening screws and a corrugated telescopic tube 12 that is fixed between the fork connecting rod 9 and the outer cover 1 and located outside the valve stem 10.

[0061] Among them, the corrugated expansion tube 12 is a rubber tube that can be extended and retracted.

[0062] The extension and retraction distances of the corrugated telescopic tube 12 are both greater than the vertical movement distance of the valve stem 10, thus preventing the corrugated telescopic tube 12 from restricting the movement of the valve stem 10.

[0063] The working principle of the above embodiments is as follows:

[0064] When in use, the outer cover 1 replaces the valve cover and is sealed to the valve body, and the valve stem 10 and valve plate 11 are located in the valve body. At the same time, the valve plate 11 is inserted into the valve seat. When the switch is controlled, the micro motor 3 drives the fork rotating seat 5 on the rotating shaft 4 to rotate in the forward and reverse directions.

[0065] The forward and reverse rotation of the shift fork rotating seat 5 drives the shift fork rod 6 to deflect synchronously in the forward and reverse directions. In conjunction with the shift fork limiting block 8 on the shift fork connecting rod 9, the shift fork rod 6 slides within the limiting hole 7 on the shift fork rod 6. When the shift fork rod 6 deflects in the forward and reverse directions, it drives the shift fork connecting rod 9 and the shift fork limiting block 8 to move, which in turn drives the valve rod 10 and the valve plate 11 to move vertically up and down, thereby realizing opening and closing and achieving convenient switching.

[0066] In addition, the outer cover 1 and the cap 2 form a sealed space to provide sealed protection for the drive fork linkage structure. In conjunction with the expansion and contraction and sealing effect of the corrugated telescopic tube 12, the valve stem 10 moves synchronously and automatically extends and retracts, while sealing the gap between the valve stem 10 and the outer cover 1 to achieve a fully sealed state. This prevents air from entering the outer cover 1 and causing corrosion of the internal structure, and also prevents leakage caused by gaps in the valve stem 10 during movement.

[0067] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

Claims

1. A valve body fork assembly, comprising an outer cover (1), a valve stem (10), a valve plate (11), and a fork connecting rod (9), wherein the valve stem (10) and the valve plate (11) are integrally connected; Its features are: The outer cover (1) is provided with a drive fork linkage structure that drives the valve stem (10) to move linearly up and down; The outer cover (1) is provided with a sealing and protective component to protect the drive fork linkage structure; The sealing and protective assembly includes a cap (2) installed at the opening on the surface of the outer cover (1) and a corrugated telescopic tube (12) installed between the fork link (9) and the outer cover (1) and located outside the valve stem (10).

2. The valve body shift fork assembly according to claim 1, characterized in that: The drive fork linkage structure includes a drive rotating component and a fork linkage component; Drive rotating parts, It includes a micro motor (3) mounted on the surface of the outer cover (1), a rotating shaft (4) that rotates with the inner wall of the outer cover (1) is mounted on the output shaft of the micro motor (3), and a fork rotating seat (5) is mounted on the outside of the rotating shaft (4).

3. A valve body shift fork assembly according to claim 2, characterized in that: The shift fork linkage component Includes a fork rod (6) installed on the opposite side of the fork rotating seat (5), a limit hole (7) is opened on the fork rod (6), a fork limiting block (8) slides in the limit hole (7), and a fork connecting rod (9) connected to the valve rod (10) is installed between the fork limiting blocks (8).

4. A valve body shift fork assembly according to claim 2, characterized in that: The inner wall of the outer cover (1) is equipped with a movable seat, the rotating shaft (4) is connected to the movable seat for rotation, and the surface of the outer cover (1) is equipped with a controller (13).

5. A valve body shift fork assembly according to claim 1, characterized in that: The valve stem (10) passes vertically through the outer cover (1), and the outer cover (1) is provided with a limiting through hole for the valve stem (10) to pass through.

6. A valve body shift fork assembly according to claim 1, characterized in that: The extension and contraction distance of the corrugated telescopic tube (12) is greater than the distance the valve stem (10) moves up and down.

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