Fluorine-lined eccentric semi-ball valve

Abstract

The utility model relates to a fluorine-lined eccentric half ball valve which comprises a hollow valve seat and a half ball valve body located in an inner cavity of the valve seat, a water inlet and a water outlet which are communicated with the inner cavity are formed in the two ends of the valve seat, fluorine-lined layers A are arranged on the wall of the inner cavity of the valve seat and the inner walls of the water inlet and the water outlet, and the fluorine-lined layers A extend to the outer end faces of the water inlet and the water outlet. The inward end of the water outlet is provided with a sealing ring matched with the semi-ball valve body; the rotating center line of the semi-ball valve body is in the vertical direction, and the rotating center line of the semi-ball valve body deviates from the center line of the water outlet. The fluorine-lined eccentric semi-ball valve is novel in structure, reasonable in design and high in practicability, the fluorine-lined layer is additionally arranged on the inner cavity wall of the valve seat, the corrosion resistance can be greatly improved, the fluorine-lined eccentric semi-ball valve can stably work in corrosive media, the service life is prolonged, and the application range is wide; meanwhile, the rotating center line of the semi-ball valve body is eccentrically arranged, abrasion of a sealing ring can be greatly reduced, the sealing effect is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a fluorine-lined eccentric semi-spherical valve. Background Technique

[0002] The semi-spherical valve is mainly used for cutting off, distributing and changing the flow direction of the medium in the pipeline. The semi-spherical valve has the advantages of small fluid resistance, convenient operation, rapid opening and closing, and convenient maintenance, and is widely used in water, steam, sewage, petrochemical industry, natural gas, two-phase media such as solution and pulp, and ideal transmission equipment for dusty gases.

[0003] Most of the existing semi-spherical valves have the following disadvantages: poor corrosion resistance, especially in a corrosive fluid medium environment; since the semi-spherical valve body is always in contact with and rubs against the sealing ring during the opening process, the sealing ring is easily worn, affecting the sealing performance and service life. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a fluorine-lined eccentric semi-spherical valve with good anti-corrosion performance, reduced wear of the sealing ring, guaranteed sealing effect, and extended service life.

[0005] The utility model is realized by the following scheme: a fluorine-lined eccentric semi-spherical valve, including a hollow valve seat and a semi-spherical valve body located in the inner cavity of the valve seat. The two ends of the valve seat are provided with a water inlet and a water outlet communicating with the inner cavity. The inner cavity wall of the valve seat and the inner walls of the water inlet and outlet are both provided with a fluorine-lined layer A, and the fluorine-lined layer A extends to the outer end faces of the water inlet and outlet; one end of the water outlet facing inwards is provided with a sealing ring cooperating with the semi-spherical valve body; the rotation center line of the semi-spherical valve body is in the vertical direction, and the rotation center line of the semi-spherical valve body deviates from the center line of the water outlet.

[0006] Further, the distance between the rotation center line of the semi-spherical valve body and the center line of the water outlet is 2-3 mm.

[0007] Further, a top cover is provided at the top of the valve seat, and a bottom cover is provided at the bottom of the valve seat. The top of the semi-spherical valve body is fixedly connected with a rotating rod passing through the seat hole in the middle of the top cover and rotatably cooperating with it, and the bottom of the semi-spherical valve body is fixedly connected with a convex shaft rotatably cooperating with the limit hole at the bottom of the inner cavity of the valve seat.

[0008] Further, the semi-spherical valve body, the rotating rod and the convex shaft are all coated with a fluorine-lined layer B.

[0009] Further, an inverted U-shaped bracket is welded on the upper side of the top cover, and a control box for controlling the rotation of the rotating rod is installed above the bracket. The rotating rod passes through the bracket upwards and extends into the control box. A worm gear installed at the upper end of the rotating rod is provided in the control box, and a worm meshing with the worm gear is also rotatably connected to the control box, and a hand wheel is installed at the end of the worm.

[0010] Furthermore, the seat hole of the top cover is a stepped hole with a smaller lower diameter and a larger upper diameter. The rotating rod is rotatably fitted with the small-diameter section of the seat hole, and a rubber sealing sleeve is provided in the large-diameter section of the seat hole. A diamond-shaped stabilizing seat is provided in the middle of the bracket. The rotating rod passes through the middle of the stabilizing seat and is rotatably fitted with it. The two ends of the long diagonal of the stabilizing seat are connected to the top cover by screws. A pressing ring A for pressing down the rubber sealing sleeve is provided on the lower side of the stabilizing seat. The rubber sealing sleeve is composed of upper and lower parts that are fitted through a conical surface.

[0011] Furthermore, a seat sleeve is connected to the water outlet end of the valve seat. Flange plates are provided at both ends of the seat sleeve. One of the flange plates is connected to the water outlet end of the valve seat by bolts. A limiting convex ring is provided on the outer peripheral part of the outer end of the sealing ring. A hole step for abutting against the limiting convex ring is provided at the inner end of the water outlet. The middle hole of the hole step is adapted to the outer peripheral part of the sealing ring. A pressing ring B that extends into the water outlet and abuts against the limiting convex ring is provided at the end of the seat sleeve facing the water outlet.

[0012] Furthermore, a fluorine-lined layer C is provided on the inner wall of the seat sleeve, and the fluorine-lined layer C extends to the end faces at both ends of the seat sleeve.

[0013] Compared with the prior art, the utility model has the following beneficial effects: The fluorine-lined eccentric semi-spherical valve of the utility model has a novel structure, reasonable design, and strong practicability. Adding a fluorine-lined layer to the inner cavity wall of the valve seat can greatly improve the anti-corrosion performance, enable stable operation in corrosive media, extend the service life, and have a wide range of applications. At the same time, the rotation center line of the semi-spherical valve body is eccentrically arranged, which can greatly reduce the wear of the sealing ring, ensure the sealing effect, and extend the service life.

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the following will further elaborate on the utility model through specific embodiments and relevant drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of an embodiment of the utility model;

[0016] Figure 2 is a schematic diagram of the internal structure of an embodiment of the utility model;

[0017] Figure 3 is a front view of an embodiment of the utility model;

[0018] Figure 4 is Figure 3 the A-A cross-sectional view in

[0019] Figure 5 is Figure 4 a schematic diagram of the semi-spherical valve body of the utility model opened at a certain angle;

[0020] Figure 6 isFigure 5 Enlarged schematic diagram at position B in the middle;

[0021] Description of reference numerals in the figure: 100 - valve seat, 110 - water inlet, 120 - water outlet, 121 - hole step, 130 - fluorine-lined layer A, 140 - sealing ring, 141 - limit convex ring, 150 - top cover, 151 - rubber sealing sleeve, 160 - bottom cover, 200 - hemispherical valve body, 210 - rotating rod, 220 - convex shaft, 230 - fluorine-lined layer B, 300 - bracket, 400 - control box, 410 - worm gear, 420 - worm, 421 - handwheel, 500 - stabilizing seat, 510 - pressing ring A, 600 - seat sleeve, 610 - flange, 620 - pressing ring B, 630 - fluorine-lined layer C. Detailed implementation manners

[0022] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs.

[0023] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] As Figures 1 - 6As shown in the figure, a fluorine-lined eccentric semi-spherical valve includes a hollow valve seat 100 and a semi-spherical valve body 200 located in the inner cavity of the valve seat. The two ends of the valve seat are provided with a water inlet 110 and a water outlet 120 that communicate with the inner cavity. The center lines of the water inlet 110 and the water outlet 120 coincide. A fluorine-lined layer A 130 is provided on the inner cavity wall of the valve seat and the inner walls of the water inlet and outlet, and the fluorine-lined layer A 130 extends to the outer end faces of the water inlet and outlet. A sealing ring 140 that cooperates with the semi-spherical valve body 200 is provided at the inner end of the water outlet facing inward. The rotation center line of the semi-spherical valve body is in the vertical direction, and the rotation center line of the semi-spherical valve body deviates from the center line of the water outlet. In the fluorine-lined eccentric semi-spherical valve of the present invention, a fluorine-lined layer A is added to the inner cavity wall of the valve seat, which can greatly improve the anti-corrosion performance, enable stable operation in corrosive media, extend the service life, and have a wide range of applications. In addition, since the rotation center line of the semi-spherical valve body deviates from the center of the valve body (i.e., the center line of the water outlet), the semi-spherical valve body only completely fits with the sealing ring 140 when in the closed position. When the semi-spherical valve body rotates in the opening direction, even if it only rotates a small angle, a gap will be generated between the semi-spherical valve body and the sealing ring 140. This can ensure that the semi-spherical valve body and the sealing ring 140 are separated, avoid the semi-spherical valve body from always contacting and rubbing with the sealing ring during the rotation process to the open position, greatly reduce the wear of the sealing ring, ensure the sealing effect, and extend the service life.

[0025] In this embodiment, the distance by which the rotation center line of the semi-spherical valve body 200 deviates from the center line of the water outlet is 2 - 3 mm.

[0026] In this embodiment, a top cover 150 is provided at the top of the valve seat, and a bottom cover 160 is provided at the bottom of the valve seat. A rotating rod 210 fixedly connected to the top of the semi-spherical valve body 200 passes through the seat hole in the middle of the top cover and rotates in cooperation with it, and a convex shaft 220 fixedly connected to the bottom of the semi-spherical valve body rotates in cooperation with the limit hole at the bottom of the inner cavity of the valve seat.

[0027] In this embodiment, a fluorine-lined layer B 230 is coated on the semi-spherical valve body 200, the rotating rod 210, and the convex shaft 220. Adding the fluorine-lined layer B improves the anti-corrosion performance of the semi-spherical valve body and extends the service life.

[0028] In this embodiment, an inverted U-shaped bracket 300 is welded on the upper side of the top cover 150. A control box 400 for controlling the rotation of the rotating rod is installed above the bracket. The rotating rod passes upward through the bracket and extends into the control box. A worm gear 410 installed at the upper end of the rotating rod is provided in the control box. A worm 420 meshing with the worm gear is also rotatably connected to the control box, and a hand wheel 421 is installed at the end of the worm. Rotating the hand wheel drives the worm to rotate, and the worm drives the rotating rod and the semi-spherical valve body to rotate through the worm gear, thereby realizing the opening and closing of the semi-spherical valve body.

[0029] In this embodiment, an indicating needle connected to the upper end of the rotating rod is provided on the upper side of the control box, and marks for indicating the position of the hemispherical valve body are provided on the upper surface of the control box, namely, marks representing opening and closing. When the indicating needle points to the closed position, the hemispherical valve body is completely closed, and when the indicating needle points to the open position, the hemispherical valve body is completely open.

[0030] In this embodiment, the seat hole of the top cover is a stepped hole that is smaller at the bottom and larger at the top. The rotating rod is rotationally fitted with the small-diameter section of the seat hole, and a rubber sealing sleeve 151 is provided in the large-diameter section of the seat hole. A diamond-shaped stabilizing seat 500 is provided in the middle of the bracket 300. The rotating rod passes through the middle of the stabilizing seat and is rotationally fitted with it. The two ends of the long diagonal of the stabilizing seat are connected to the top cover by screws. A pressing ring A510 for pressing the rubber sealing sleeve downward is provided below the stabilizing seat. The rubber sealing sleeve is composed of upper and lower parts that are fitted through a conical surface. By using the pressing ring A510 to press the rubber sealing sleeve downward, since the upper and lower parts of the rubber sealing sleeve are fitted through a conical surface, it will expand and tighten to both sides when receiving an axial pressing force, thereby ensuring the sealing performance.

[0031] In this embodiment, a seat sleeve 600 is connected to the water outlet end of the valve seat. Flange disks 610 are provided at both ends of the seat sleeve. One of the flange disks is connected to the water outlet end of the valve seat by bolts. A limiting convex ring 141 is provided on the outer peripheral part of the outer end of the sealing ring 140. A hole step 121 that abuts against the limiting convex ring is provided at the inner end of the water outlet. The middle hole of the hole step is adapted to the outer peripheral part of the sealing ring. A pressing ring B620 that extends into the water outlet and abuts against the limiting convex ring is provided at the end of the seat sleeve facing the water outlet. The outer end of the sealing ring 140 is fixed by relying on the seat sleeve 600. The seat sleeve can be removed to replace the sealing ring.

[0032] In this embodiment, a fluorine-lined layer C630 is provided on the inner wall of the seat sleeve, and the fluorine-lined layer C extends to the end faces at both ends of the seat sleeve.

[0033] The above-mentioned fluorine-lined layer A, fluorine-lined layer B, and fluorine-lined layer C enable all parts inside the entire hemispherical valve that can come into contact with water or other media to be fluorine-lined, greatly improving the anti-corrosion performance and enabling stable operation in corrosive media.

[0034] For any of the technical solutions disclosed by the present invention above, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many feasible numerical values. Since there are too many numerical values to enumerate, the present invention only discloses some numerical values to illustrate the technical solutions of the present invention. Moreover, the above-listed numerical values should not constitute a limitation to the protection scope of the present invention.

[0035] If the utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws for connection), or it can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutually fixed connection can also be replaced by an integral structure (for example, manufactured by integral forming using casting technology) (except where it is obviously impossible to use the integral forming process).

[0036] In addition, unless otherwise stated, the terms used to represent positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar, or close to them.

[0037] Any component provided by the utility model can either be assembled from multiple separate components or be a single component manufactured by integral forming technology.

[0038] The above are only the preferred embodiments of the utility model and do not limit the utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still fall within the protection scope of the technical solution of the utility model.

Claims

1. A fluorine-lined eccentric hemispherical valve, characterized in that: It includes a hollow valve seat and a hemispherical valve body located in the inner cavity of the valve seat, wherein a water inlet and a water outlet communicating with the inner cavity are provided at both ends of the valve seat, and a fluorine lining layer A is provided on the inner cavity wall of the valve seat and the inner walls of the water inlet and outlet, and the fluorine lining layer A extends to the outer end surfaces of the water inlet and outlet; a sealing ring cooperating with the hemispherical valve body is provided at the inward end of the water outlet; the rotation centerline of the hemispherical valve body is in the vertical direction, and the rotation centerline of the hemispherical valve body deviates from the centerline of the water outlet.

2. The fluorine-lined eccentric hemispherical valve according to claim 1, characterized in that: The rotation center line of the hemispherical valve body deviates from the center line of the water outlet by 2-3 mm.

3. The fluorine-lined eccentric hemispherical valve according to claim 1, characterized in that: A top cover is provided on the top of the valve seat, and a bottom cover is provided on the bottom of the valve seat. A rotating rod is fixedly connected to the top of the hemispherical valve body and passes through a seat hole in the middle of the top cover and rotates with it. A convex shaft is fixedly connected to the bottom of the hemispherical valve body and rotates with the limiting hole at the bottom of the inner cavity of the valve seat.

4. The fluorine-lined eccentric hemispherical valve according to claim 3, characterized in that: The hemispherical valve body, the rotating rod and the convex shaft are all coated with a fluorine lining layer B.

5. The fluorine-lined eccentric hemispherical valve according to claim 3, characterized in that: An inverted U-shaped bracket is welded on the upper side of the top cover, and a control box for controlling the rotation of a rotating rod is installed above the bracket. The rotating rod passes upward through the bracket and extends into the control box. A worm gear installed on the upper end of the rotating rod is provided in the control box. A worm screw meshing with the worm gear is also rotatably connected to the control box, and a handwheel is installed on the end of the worm screw.

6. The fluorine-lined eccentric hemispherical valve according to claim 3, characterized in that: The seat hole of the top cover is a stepped hole which is small at the bottom and large at the top. The rotating rod is rotationally matched with the small diameter section of the seat hole, and a rubber sealing sleeve is provided in the large diameter section of the seat hole. A diamond-shaped stable seat is provided in the middle of the bracket. The rotating rod passes through the middle of the stable seat and rotationally matches with it. The two ends of the long diagonal of the stable seat are connected to the top cover by screws. A clamping ring A is provided on the lower side of the stable seat for pressing the rubber sealing sleeve downward. The rubber sealing sleeve consists of an upper and lower part which are matched through a conical surface.

7. The fluorine-lined eccentric hemispherical valve according to claim 1, characterized in that: The water outlet end of the valve seat is connected to a seat sleeve, and flanges are provided at both ends of the seat sleeve, wherein the flange at one end is connected to the water outlet end of the valve seat by bolts, a limiting convex ring is provided on the outer periphery of the outward end of the sealing ring, and a hole step is provided on the inward end of the water outlet to resist the limiting convex ring, and the hole in the hole step is matched with the outer periphery of the sealing ring, and a clamping ring B is provided on the end of the seat sleeve facing the water outlet, which extends into the water outlet and resists the limiting convex ring.

8. The fluorine-lined eccentric hemispherical valve according to claim 7, characterized in that: The inner wall of the seat cover is provided with a fluorine lining layer C, and the fluorine lining layer C extends to the end surfaces of both ends of the seat cover.

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