Sealing ball valve

Abstract

A sealing ball valve comprises a valve body, a valve cavity arranged in the valve body, a valve core arranged in the valve cavity, a valve rod penetrating through the top end of the valve body to be connected with the valve core, a valve cover covering the valve rod at the top of the valve body, and a handle connected with the top end of the valve rod. Sealing rings are arranged at the positions, close to the liquid inlet and the liquid outlet, of the valve cavity, and the inner sides of the sealing rings are tightly attached to the valve element. An inner sealing support is further arranged in the valve cavity, the valve element is sleeved with the inner sealing support, the inner sealing support comprises an outer sealing ring and an inner sealing ring, a leakage-proof channel is formed in the end face, facing the liquid inlet, of the bottom end of the outer sealing ring, a liquid touch switch is arranged at the bottom end of the leakage-proof channel, and the liquid touch switch is electrically connected with an alarm.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a sealing ball valve. Background Art

[0002] Valves are control components in fluid transportation systems, performing functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion, and overflow / pressure relief. Depending on the shape of the valve core, valves can be categorized as ball valves, butterfly valves, and cone valves. Ball valves utilize a sphere as the opening and closing element, which is driven by a valve stem and rotates around its axis. They are primarily used to shut off or connect media in pipelines and can also be used for fluid regulation and control. Ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electric power, municipal engineering, and steel, playing a vital role in the national economy.

[0003] The sealing between the valve seat and the ball is an important criterion for determining the sealing performance of the ball valve. The valve seat in the existing technology rubs against the ball during use and is exposed to medium pressure shock for a long time. Over time, the seal is easily damaged. Once the seal is damaged, the valve cannot continue to work. Due to the delay in monitoring and maintenance, the pipeline where the valve is located often suffers huge losses. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides the following solutions:

[0005] A sealed ball valve comprises a valve body, a valve cavity is arranged in the valve body, a valve core is arranged in the valve cavity, a valve stem passes through the top end of the valve body and is connected to the valve core, a valve cover is provided on the outside of the valve stem at the top of the valve body, and a handle is connected to the top end of the valve stem; a sealing ring is provided near the liquid inlet and the liquid outlet of the valve cavity, and the inner side of the sealing ring is tightly fitted with the valve core; an inner sealing bracket is also numerically arranged in the valve cavity, the inner sealing bracket is sleeved on the outside of the valve core, the inner sealing bracket comprises an outer sealing ring and an inner sealing ring, and a leak-proof channel is provided on the bottom end of the outer sealing ring on the end face facing the liquid inlet, a liquid touch switch is provided at the bottom end of the leak-proof channel, and the liquid touch switch is electrically connected to the alarm.

[0006] Furthermore, the alarm is a warning light or a buzzer.

[0007] Furthermore, the inner sealing ring and the outer sealing ring are both welded to the valve cavity by metal, and sealing gaskets are provided between the inner sealing ring, the outer sealing ring and the valve core.

[0008] The beneficial effects of the utility model are:

[0009] The valve core and the valve cavity form a double seal through the sealing ring and the inner sealing bracket. When the sealing ring leaks, the liquid enters the leak-proof channel on the inner sealing bracket. A liquid touch switch is set in the leak-proof channel. When it comes into contact with the liquid, the external alarm is activated to give a prompt, which has double sealing protection and is convenient for leak detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the utility model;

[0011] Figure 2 for Figure 1 Schematic diagram of part A.

[0012] 1. Valve body, 2. Valve chamber, 3. Valve core, 4. Valve stem; 5. Handle; 6. Valve cover; 7. Sealing ring; 8. Inner sealing bracket; 9. Outer sealing ring; 10. Inner sealing ring; 11. Leak-proof channel; 12. Alarm. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the present application clearer, the present invention is further described in detail below in conjunction with the embodiments. In order to thoroughly understand the present invention, some specific details will be involved in the following description. In the absence of these specific details, the present invention can still be implemented, that is, those skilled in the art can more effectively introduce the essence of their work to other technicians in the field using these descriptions and statements here. In addition, it should be noted that it should be understood that the specific embodiments described herein are merely used to explain the present application and are not intended to limit the actual scope of protection. All raw materials used in the following examples are commercially available products.

[0014] Example 1: Figure 1 As shown, a sealed ball valve comprises a valve body 1, a valve cavity 2 is arranged in the valve body 1, a valve core 3 is arranged in the valve cavity 2, a valve stem 4 passes through the top end of the valve body 1 and is connected to the valve core 3, a valve cover 6 is provided on the outside of the valve stem 4 at the top of the valve body 1, and a handle 5 is connected to the top end of the valve stem 4; a sealing ring 7 is provided near the liquid inlet and the liquid outlet of the valve cavity 2, and the inner side of the sealing ring 7 is tightly fitted with the valve core 3; an inner sealing bracket 8 is also numerically arranged in the valve cavity 2, and the inner sealing bracket 8 is sleeved on the outside of the valve core 3, and the inner sealing bracket 8 comprises an outer sealing ring 9 and an inner sealing ring 10, and a leak-proof channel 11 is provided on the end face facing the liquid inlet at the bottom end of the outer sealing ring 9, and a liquid touch switch is provided at the bottom end of the leak-proof channel 11, and the liquid touch switch is electrically connected to the alarm 12.

[0015] The alarm 12 is a warning light or a buzzer.

[0016] The inner sealing ring 10 and the outer sealing ring 9 are both welded to the valve cavity 2 by metal, and sealing gaskets are provided between the inner sealing ring 10 , the outer sealing ring 9 and the valve core 3 .

[0017] The valve core 3 and the valve cavity 2 of the utility model form a double seal through the sealing ring 7 and the inner sealing bracket 8. When the sealing ring 7 leaks, the liquid enters the leak-proof channel 11 on the inner sealing bracket 8. A liquid touch switch is provided in the leak-proof channel 11. When it comes into contact with the liquid, an external alarm 12 is activated to give a prompt, which has double sealing protection and is convenient for leak detection.

[0018] Finally, it should be noted that the above examples are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples and is subject to numerous variations. All variations that can be directly derived or conceived by a person of ordinary skill in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A sealed ball valve, characterized in that: The closure of the valve core is formed by a spring, and a spring is provided on the closure side of the valve core so that the closure side can be opened and closed.

2. A sealed ball valve according to claim 1, characterized in that: The alarm is a warning light or a buzzer.

3. A sealed ball valve according to claim 1, characterized in that: The inner sealing ring and the outer sealing ring are both welded to the valve cavity with metal, and sealing gaskets are provided between the inner sealing ring, the outer sealing ring and the valve core.

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