Concentric self-cleaning wear-resistant ceramic semi-ball valve

Abstract

The utility model discloses a concentric self-cleaning wear-resistant ceramic half ball valve which comprises a valve body, an inlet and an outlet are respectively arranged on two sides of the valve body, a cavity structure is arranged in the valve body, the cavity structure is respectively communicated with the inlet and the outlet, a valve shaft is arranged in the valve body in a penetrating mode, a half ball valve is arranged in the cavity structure, and the half ball valve is connected with the valve shaft. Under the driving of the valve shaft, the semi-ball valve circumferentially rotates around the valve shaft; a wear-resistant part is arranged on the semi-ball valve, a sealing part is arranged at the position close to the inlet and in the cavity structure, and the sealing part is matched with the wear-resistant part. The wear-resistant part is embedded in the bending position of the outer side wall of the semi-ball valve, so that the wear-resistant strength of the semi-ball valve can be greatly improved; and meanwhile, fluid in the pipeline uniformly passes through the end face of the semi-ball valve to wash away aggregates on the end face of the semi-ball valve and the valve seat, so that the purpose of self-cleaning is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to a concentric self-cleaning and wear-resistant ceramic ball valve. Background Technique

[0002] There are many types of valves. According to different classification criteria, there are various valve types. Among them, according to the functions and uses of valves, they can be roughly divided into cut-off valves, safety valves, regulating valves, and flow-dividing valves, etc.; classified according to structural characteristics, they can be roughly divided into gate valves, plug valves, swing valves, butterfly valves, and slide valves, etc.; classified according to connection methods, they can be roughly divided into threaded connection valves, flange connection valves, welded connection valves, clamp connection valves, ferrule connection valves, and wafer connection valves, etc.; classified according to the spool structure, they can be divided into hemispheres and valve plates, etc. Among them, the ball valve has excellent performance. It is a kind of valve that rotates around the center line of the valve body to achieve opening and closing. It is mainly used in pipelines to cut off, distribute, and change the flow direction of the medium. It is a new type of valve widely used in recent years. However, it is found in actual use that after long-term and frequent opening and closing, the contact surface of the hemispherical spool is easily severely worn, and gaps appear during opening and closing, resulting in water leakage. Moreover, deposits are prone to occur at the opening and closing contact positions inside the valve body for a long time, and it is not easy to clean this position. Content of the Utility Model

[0003] The purpose of the utility model is to provide a concentric self-cleaning and wear-resistant ceramic ball valve to solve the above problems.

[0004] The utility model realizes the above purpose through the following technical solutions:

[0005] A concentric self-cleaning and wear-resistant ceramic ball valve includes a valve body. An inlet and an outlet are respectively arranged on both sides of the valve body. A cavity structure is arranged inside the valve body. The cavity structure is respectively communicated with the inlet and the outlet. A valve shaft penetrates through the valve body. A ball valve is arranged inside the cavity structure. The ball valve is connected to the valve shaft. Driven by the valve shaft, the ball valve rotates circumferentially around the valve shaft. A wear-resistant member is arranged on the ball valve. A seal is arranged inside the cavity structure near the inlet position. The seal cooperates with the wear-resistant member to tightly fit and press the ball valve against the inlet position to prevent water leakage.

[0006] Preferably, the upper end of the ball valve is connected to the valve shaft. The lower end of the ball valve is movably arranged at the bottom of the valve body, and the valve shaft, the valve body, and the ball valve are concentrically arranged.

[0007] Preferably, the wear-resistant member includes ceramic valve heads symmetrically arranged on the outer side wall of the ball valve. The ceramic valve heads cooperate with the seal to improve the wear resistance of the bent position on the outer side wall of the ball valve.

[0008] Preferably, wear-resistant blocks are embedded between two groups of the ceramic valve heads and on the outer side wall of the hemispherical valve.

[0009] Preferably, the seal includes a floating pressure ring which is embedded near the inlet position, and a ceramic valve seat is arranged on the floating pressure ring, and the ceramic valve seat cooperates with the ceramic valve heads arranged on the wear-resistant member.

[0010] The beneficial effects of the present utility model are as follows:

[0011] By embedding a wear-resistant member at the bent position of the outer side wall of the hemispherical valve, the wear resistance of the hemispherical valve can be greatly improved; meanwhile, the fluid in the pipeline passes through the contact surfaces between the hemispherical valve contact surface and the valve seat at a high speed and uniformly, washing away the aggregates on the contact surfaces between the release surface of the hemispherical valve and the valve seat, achieving the purpose of self-cleaning. Description of the Drawings

[0012] 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 of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0014] The description of the reference numerals is as follows:

[0015] 1 is the valve shaft, 2 is the valve body, 3 is the ceramic valve head, 4 is the ceramic valve seat, and 5 is the floating pressure ring. Detailed Embodiments

[0016] The following further explains the technical solutions of the present utility model in combination with the attached Figure 1 ,:

[0017] As Figure 1 shown, a concentric self-cleaning and wear-resistant ceramic hemispherical valve includes a valve body 2. Inlets and outlets are respectively arranged on both sides of the valve body 2. A cavity structure is arranged inside the valve body 2, and the cavity structure is respectively communicated with the inlet and the outlet. That is to say, the overall design form is a through-type, that is, the water inlet on one side passes through the cavity structure and finally flows out from the water outlet, and the outlet and the inlet are on the same straight line.

[0018] Specifically, as Figure 1As shown, a valve shaft 1 penetrates through the valve body 2, a hemispherical valve is arranged in the cavity structure, the hemispherical valve is connected to the valve shaft 1, and driven by the valve shaft 1, the hemispherical valve rotates circumferentially around the valve shaft 1. That is to say, driven by the valve shaft, the hemispherical valve rotates in the cavity structure, thereby realizing opening and closing.

[0019] A wear-resistant part is arranged on the hemispherical valve, and a seal is arranged in the cavity structure near the inlet position, and the seal cooperates with the wear-resistant part to tightly fit and press the hemispherical valve against the inlet position to prevent water leakage. That is to say, a wear-resistant part is arranged at the contact position between the hemispherical valve and the valve body, that is, a wear-resistant part is embedded at the bent position of the hemispherical valve. This position belongs to the frequently contacted area with the inner wall of the valve body. Therefore, embedding a wear-resistant part at this position can greatly improve the wear resistance of the hemispherical valve, and a seal is arranged at the rear near the inlet position, so as to move the contact position between the hemispherical valve and the seal backward, so as to facilitate subsequent fluid to fully scour this area and avoid the appearance of aggregates and water leakage in this area.

[0020] That is to say, in the past, the hemispherical valve was tightly attached to the inlet, that is, the contact surface of the hemispherical valve was relatively forward. On the one hand, it was easy to leak water, and on the other hand, aggregates were likely to appear on this contact surface, and the fluid passing through was not easy to scour away the aggregates in this area; while in this embodiment, the contact surface between the hemispherical valve and the seal built in the valve body is moved backward, and the high-speed fluid scours this contact surface at a large angle and generates a relatively misaligned acting force, thereby scouring away the aggregates on this contact surface and realizing the self-cleaning function.

[0021] In some embodiments, as Figure 1 shown, the upper end of the hemispherical valve is connected to the valve shaft 1, the lower end of the hemispherical valve is movably arranged at the bottom of the valve body 2, and the valve shaft 1, the valve body and the hemispherical valve are concentrically arranged. That is to say, in this embodiment, the upper and lower ends of the valve shaft, the valve body and the hemispherical valve are concentric and coaxial.

[0022] Specifically, the wear-resistant part includes ceramic valve heads 3 symmetrically arranged on the outer side wall of the hemispherical valve, and the ceramic valve heads 3 cooperate with the seal to improve the wear resistance of the bent position on the outer side wall of the hemispherical valve. That is to say, ceramic valve heads are embedded in the bent area of the outer side wall of the hemispherical valve. Using the super wear-resistant property of ceramics, the wear resistance of the hemispherical valve can be greatly improved. At the same time, the ceramic valve heads are tightly attached to the seal to realize strong sealing of the inlet position.

[0023] In some embodiments, as Figure 1 shown, wear-resistant blocks are embedded on the outer side wall of the hemispherical valve between two groups of the ceramic valve heads 3. That is to say, conventional wear-resistant blocks are also embedded on the outer side of the hemispherical valve to protect the hemispherical valve to a certain extent.

[0024] In some embodiments, such as Figure 1 shown, the seal includes a floating pressure ring 5, the floating pressure ring 5 is embedded near the inlet position, and a ceramic valve seat 4 is provided on the floating pressure ring 5, and the ceramic valve seat 4 cooperates with a ceramic valve head 3 arranged on the wear-resistant member. That is to say, when the ceramic valve head abuts against the ceramic valve seat, the floating pressure ring can be indirectly pressed at the same time, improving the sealing performance at the inlet position.

[0025] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A concentric self-cleaning wear-resistant ceramic hemispherical valve, comprising a valve body, an inlet and an outlet are respectively arranged on both sides of the valve body, a cavity structure is arranged in the valve body, the cavity structure is respectively connected with the inlet and the outlet, a valve shaft is passed through the valve body, characterized in that: A hemispherical valve is arranged in the cavity structure, and the hemispherical valve is connected to the valve shaft. Driven by the valve shaft, the hemispherical valve rotates circumferentially around the valve shaft. A wear-resistant part is arranged on the hemispherical valve, and a sealing part is arranged near the inlet position and in the cavity structure. The sealing part cooperates with the wear-resistant part so that the hemispherical valve can fit tightly against the inlet position to prevent water leakage.

2. The concentric self-cleaning wear-resistant ceramic hemispherical valve according to claim 1, characterized in that: The upper end of the semi-ball valve is connected to the valve shaft, the lower end of the semi-ball valve is movably arranged at the bottom of the valve body, and the valve shaft, the valve body and the semi-ball valve are concentrically arranged.

3. The concentric self-cleaning wear-resistant ceramic hemispherical valve according to claim 1, characterized in that: The wear-resistant part includes a ceramic valve head symmetrically arranged on the outer side wall of the hemispherical valve, and the ceramic valve head cooperates with the sealing part to improve the wear resistance at the bending position on the outer side wall of the hemispherical valve.

4. The concentric self-cleaning wear-resistant ceramic hemispherical valve according to claim 3, characterized in that: A wear-resistant block is located between the two groups of ceramic valve heads and embedded on the outer side wall of the hemispherical valve.

5. The concentric self-cleaning wear-resistant ceramic hemispherical valve according to claim 1 or 3, characterized in that: The sealing member comprises a floating pressure ring, which is embedded in a position close to the inlet, and a ceramic valve seat is arranged on the floating pressure ring, and the ceramic valve seat matches with a ceramic valve head arranged on the wear-resistant member.

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