High-temperature-resistant corundum wear-resistant ceramic valve plate

Abstract

The utility model relates to the technical field of valve plates, in particular to a high-temperature-resistant corundum wear-resistant ceramic valve plate which comprises a valve plate body, the front face and the back face of the valve plate body are each of a peak-shaped curved surface structure, the middle of each peak-shaped curved surface structure protrudes, and the periphery of each peak-shaped curved surface structure is concave. The spiral belt is arranged on the peak-shaped curved surface structure in a protruding mode, and a protective ring is arranged on the edge of the valve plate body and protrudes towards the outer side. According to the high-temperature-resistant corundum wear-resistant ceramic valve plate, the double-face spiral curved surface structure is adopted, fluid is well drained and buffered while the strength of the whole valve plate is improved, the impact pressure of the fluid is reduced, the use safety and stability of the whole valve plate are improved, and therefore the whole service life of the valve plate is prolonged, and wide application and popularization are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of valve plates, in particular to a high-temperature-resistant corundum wear-resistant ceramic valve plate. Background Art

[0002] With the continuous progress of society, the valve industry has developed rapidly. Currently, various types of valves are used in the market and are widely applied to various different occasions. The stable and safe use of valves is inseparable from the valve plate. The valve plate is an important component in the valve and is the key part that determines whether the valve can be opened and closed. Most of the valve plates used in the market currently adopt a flat plate structure design, which is relatively convenient in the actual installation process and can meet people's usage requirements; however, it is found in the long-term use process that such a flat plate valve plate structure has the following defects: First, the structural strength is not high, it is easy to be distorted and deformed, and the service life is not long, and it needs to be regularly replaced frequently; Second, during the long-term use process, it is severely eroded by the fluid, which will cause the overall sealing effect to deteriorate and gradually lose the function of the valve.

[0003] In summary, the existing valve plate structure of the valve still has great structural defects and cannot meet the needs of people for long-term safe and stable use. Summary of the Invention

[0004] The technical problem to be solved by the utility model is: In order to solve the problems existing in the above background art, a high-temperature-resistant corundum wear-resistant ceramic valve plate is provided. It adopts a double-sided spiral curved surface structure setting, which improves the overall strength of the valve plate while providing good drainage buffering for the fluid, reduces the fluid impact pressure, improves the use safety and stability of the overall valve plate, thereby improving its overall service life and facilitating wide promotion and use.

[0005] The technical solution adopted by the utility model to solve its technical problems is: A high-temperature-resistant corundum wear-resistant ceramic valve plate, including a valve plate body. The front and back surfaces of the valve plate body are both peak-shaped curved surface structures with a convex middle part and a concave peripheral edge. A spiral band spreading from the center to the periphery is also provided on the peak-shaped curved surface structure. The spiral band protrudes on the peak-shaped curved surface structure. A protective ring is arranged at the edge of the valve plate body, and the protective ring protrudes outward.

[0006] Further defined, in the above technical solution, the height of the protruding end of the protective ring is the same as the height of the convex middle part of the valve plate body; such a design can achieve secondary buffering of the fluid.

[0007] Further defined, in the above technical solution, the valve plate body, the spiral band and the protective ring are of an integral structure, and the valve plate body, the spiral band and the protective ring are combined to form a dumbbell-shaped structure.

[0008] Further limitation: in the above technical solution, the outer edge of the valve plate body has an arc-shaped curved surface structure, and an opening groove is provided in the middle of the arc-shaped curved surface structure; such a design facilitates the loading and unloading of the sealing ring.

[0009] Further limitation: in the above technical solution, the cross-section of the opening groove is one of a rectangular shape, a triangular shape or a trapezoidal shape; it can be selected according to actual use.

[0010] Further limitation: in the above technical solution, a protective layer is provided on the outside of the dumbbell-shaped structure; further improving the surface wear resistance and corrosion resistance.

[0011] Further limitation: in the above technical solution, the protective layer includes a laser surface hardening layer, an anti-corrosion coating and a wear-resistant coating provided from the inside to the outside.

[0012] The beneficial effects of the present utility model are as follows: The high-temperature resistant corundum wear-resistant ceramic valve plate proposed by the present utility model adopts a double-sided spiral curved surface structure, which improves the overall strength of the valve plate while providing good drainage and buffering for the fluid, reduces the fluid impact pressure, improves the use safety and stability of the overall valve plate, thereby increasing its overall service life, and is convenient for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is Figure 1 the cross-sectional structural schematic diagram in the A-A direction of

[0016] Figure 3 is Figure 2 the layer structural schematic diagram of the protective layer in

[0017] The reference numerals in the drawings are: 1, valve plate body; 2, peak-shaped curved surface structure; 3, spiral band; 4, retaining ring; 5, opening groove; 6, protective layer; 6-1, laser surface hardening layer; 6-2, anti-corrosion coating; 6-3, wear-resistant coating. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0019] In the present application, wear-resistant coating 6-3: By coating a layer of wear-resistant material, such as silicon carbide or alumina, on the ceramic surface, the wear resistance of the valve plate can be significantly improved. The wear-resistant coating 6-3 can be realized by methods such as plasma spraying, thermal spraying or chemical vapor deposition.

[0020] Corrosion-resistant coating 6-2: Coating a corrosion-resistant material, such as chromium oxide or titanium oxide, on the ceramic surface can improve the corrosion resistance of the valve plate, especially when used in corrosive media.

[0021] Laser surface hardening layer 6-1: Using a laser beam to quickly melt and rapidly solidify the ceramic surface to form a surface layer with higher hardness, thereby improving wear resistance and corrosion resistance.

[0022] See Figure 1 、 Figure 2 and Figure 3 Shown is a high-temperature resistant corundum wear-resistant ceramic valve plate, including a valve plate body 1. Both the front and back surfaces of the valve plate body 1 are peak-shaped curved surface structures 2 with a convex middle part and a concave peripheral edge. A spiral band 3 spreading from the center to the periphery is also provided on the peak-shaped curved surface structure 2. The spiral band 3 protrudes from the peak-shaped curved surface structure 2. A retaining ring 4 is provided at the edge of the valve plate body 1, and the retaining ring 4 protrudes outward.

[0023] Among them, the height of the protruding end of the retaining ring 4 is the same as the height of the convex middle part of the valve plate body 1. The valve plate body 1, the spiral band 3 and the retaining ring 4 are of an integral structure, and the valve plate body 1, the spiral band 3 and the retaining ring 4 form a dumbbell-shaped structure in combination. The outer edge of the valve plate body 1 is in an arc-shaped curved surface structure, and an opening groove 5 is provided in the middle of the arc-shaped curved surface structure. The cross-section of the opening groove 5 is in the shape of a rectangle, a triangle or a trapezoid. A protective layer 6 is provided on the outside of the dumbbell-shaped structure. The protective layer 6 includes a laser surface hardening layer 6-1, a corrosion-resistant coating 6-2 and a wear-resistant coating 6-3 arranged from the inside to the outside.

[0024] The high-temperature resistant corundum wear-resistant ceramic valve plate has the following advantages compared with the traditional valve plate structure: The overall strength of the valve plate structure can be significantly improved through the peak-shaped curved surface structures 2 arranged on both sides, and the impact of the fluid can be instantaneously spread on the end face of the valve plate body 1 through the arranged spiral band 8, so as to achieve effective buffering; when the buffered fluid flows outward to the retaining ring 4, secondary buffering in the vertical direction of the fluid is realized, so that the impact resistance of the overall valve plate body 1 can be significantly improved and the service life of the overall valve plate body 1 can be prolonged.

[0025] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. High temperature resistant corundum wear-resistant ceramic valve plate, characterized by: It includes a valve plate body, the front and back sides of the valve plate body are both peak-shaped curved surface structures with a convex middle and concave edges, a spiral belt spreading from the center to the surroundings is also arranged on the peak-shaped curved surface structure, the spiral belt is protrudingly arranged on the peak-shaped curved surface structure, and a guard ring is arranged on the edge of the valve plate body, and the guard ring is convex to the outside.

2. The high temperature resistant corundum wear-resistant ceramic valve plate according to claim 1, characterized in that: The height of the end of the guard ring protrusion is equal to the height of the middle protrusion of the valve plate body.

3. The high temperature resistant corundum wear-resistant ceramic valve plate according to claim 1, characterized in that: The valve plate body, the spiral belt and the retaining ring are an integrated structure, and the valve plate body, the spiral belt and the retaining ring are combined to form a dumbbell-shaped structure.

4. The high temperature resistant corundum wear-resistant ceramic valve plate according to claim 1, characterized in that: The outer edge of the valve plate body is in an arc curved surface structure, and an open groove is arranged in the middle of the arc curved surface structure.

5. The high temperature resistant corundum wear-resistant ceramic valve plate according to claim 4, characterized in that: The cross section of the opening groove is one of a rectangular shape, a triangular shape or a trapezoidal shape.

6. The high temperature resistant corundum wear-resistant ceramic valve plate according to claim 3, characterized in that: A protective layer is arranged on the outside of the dumbbell-shaped structure.

7. The high temperature resistant corundum wear-resistant ceramic valve plate according to claim 6, characterized in that: The protective layer comprises a laser surface hardening layer, an anti-corrosion coating and a wear-resistant coating which are arranged from the inside to the outside.

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