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Washing-resistant ball valve

A technology of scour resistance and ball valve, applied in valve details, valve device, valve shell structure, etc., can solve the problems of scouring and wear of the ball and valve seat, and achieve the effect of reducing scouring wear, increasing the flow area, and improving corrosion resistance.

Inactive Publication Date: 2021-11-16
HARBIN HBC VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention solves the problem that when the ball of the traditional ball valve has a small opening, the medium with high velocity and particles flowing through the valve body is likely to cause scour and wear to the ball and the valve seat, and further discloses "a scour-resistant ball valve"

Method used

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  • Washing-resistant ball valve
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  • Washing-resistant ball valve

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0041] Specific implementation mode one: combine Figure 1-Figure 8 Describe this embodiment. A scour-resistant ball valve in this embodiment includes a side valve body 2, a valve seat 3, a ball 9, a valve body 10, a valve stem 18, and a bracket 21. The valve body 10 is connected to the side valve body 2. The valve The seat 3 is arranged in the side valve body 2, the valve body 10 is provided with a ball 9, the ball 9 is provided with a notch 28, and the valve stem 18 penetrates from the top of the valve body 10 and extends to the top of the ball 9 to be connected with the ball 9. Body 10 is also provided with support 21, under the premise of the same opening degree, the spheroid 9 that has notch 28 (such as Figure 5 shown) versus a sphere without notches (such as Figure 7 Shown) compared with the flow area of ​​its medium (such as Figure 5 and Figure 7 (shown in the shaded part) increases, which effectively reduces the flow velocity when the medium circulates, and redu...

specific Embodiment approach 2

[0043]Specific embodiment 2: This embodiment will be described in conjunction with specific embodiment 1. In this embodiment, a scour-resistant ball valve is provided with a groove 26 on the side valve body 2, and the valve seat 3 is installed in the side valve body 2 through the groove 26. , the groove 26 of the side valve body 2 is provided with a stainless steel layer, the sealing ring 5, the pressure ring 6 and the first disc spring 7 are arranged between the side valve body 2 and the valve seat 3, and the groove 26 in the side valve body 2 is stacked Welding stainless steel, its purpose is to improve the corrosion resistance of side valve body 2, the sealing ring 5 and pressure ring 6 that are set between the stainless steel layer of groove 26 and valve seat 3 play a sealing role, the two sides of sealing ring 5 are respectively connected with The stainless steel layer is in close contact with the valve seat 3; the pressure ring 6 is a rigid part. In the working state, the...

specific Embodiment approach 3

[0044] Specific embodiment 3: This embodiment is described in conjunction with specific embodiment 1 or specific embodiment 2. In this embodiment, a scour-resistant ball valve, the valve stem 18 is connected to the top of the ball 9 through a pin 17, and the pin 17 is a cylindrical pin. , the bottom of the valve stem 18 drives the ball 9 to rotate through a plurality of longitudinal cylindrical pins, the contact position of the valve stem 18 and the ball 9 is evenly stressed, and it is not easy to be deformed due to excessive switching force; the valve stem 18 and the valve body 10 are provided There is a first bearing 14, a rectangular groove is opened on the first bearing 14, the second dustproof ring 13 is installed on the first bearing 14 through the rectangular groove, the second dustproof ring 13 is in close contact with the valve stem 18, and the valve stem 18 is provided with a stuffing box 19, the stuffing box 19 is fixed on the valve body 10 by screws, a stuffing 22 i...

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Abstract

The invention discloses a washing-resistant ball valve, and belongs to the field of ball valves. The ball valve solves the problem that when the opening degree of a ball body of a traditional ball valve is smaller, high-flow-speed and particle-containing media flowing in a valve body easily cause washing wear to the ball body and a valve seat. The ball valve comprises a side valve body, a valve seat, a ball body, a valve body, a valve rod and a support, the valve body is connected with the side valve body, the valve seat is arranged in the side valve body, the ball body is arranged in the valve body, a notch is formed in the ball body, the valve rod penetrates into the valve body from the upper portion of the valve body and extends to the top of the ball body to be connected with the ball body, and the support is further arranged on the valve body. According to the washing-resistant ball valve, through the notch formed in the ball body, the overflowing area of a medium under the same opening degree is increased, the flowing speed of the medium in the flowing process is reduced, and washing wear of the medium to the ball body and the valve seat is effectively reduced.

Description

technical field [0001] The invention relates to a novel ball valve, which belongs to the field of ball valves. Background technique [0002] Ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, and occupy a pivotal position in the national economy. It has the action of rotating 90 degrees. The closing part is a ball with a circular through hole or channel passing through its axis. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to be rotated 90 degrees. Easy operation and small rotating torque can close tightly; [0003] The current existing ball valves have the following deficiencies: [0004] 1. When the ball of the existing ball valve has a small opening, a crescent-shaped through hole is formed between the ball and the valve seat. When the medium ...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K27/06
CPCF16K5/0605F16K5/0657F16K5/0663F16K5/0689F16K5/0694F16K27/067
Inventor 金成波高德明王勇李俊青
Owner HARBIN HBC VALVE