CN103174853A - Built-in reducing valve easy to disassemble - Google Patents

Abstract

The invention discloses an easily detachable built-in pressure reducing valve. It includes two flanges, a valve body, a set of control springs, a fixed fence, a movable fence, a spring fixed plate and gaskets; a valve body is coaxially installed between the two flanges, and the valve body is installed along the inlet end to the outlet end. The fixed fence, gasket, movable fence, spring and spring fixed plate are installed in sequence. The fixed fence is fixed at the inlet end of the valve body, the gasket is fixed on the fixed fence, and the spring fixed plate is fixed at the outlet of the valve body. At the end, the moving fence is connected with the spring fixed plate through the spring; the fixed fence and the spacer have a circle with the center of the fixed fence as the center of a circle with an equally divided fan-shaped flow channel, and the moving fence has a circle centered on the center of the moving fence. There are equally divided fan-shaped runners in a circle around the center of the circle, and the number of two sets of fan-shaped runners is the same and cross-distributed. The invention can reduce the medium pressure passing through the valve, and the pressure reducing valve automatically opens and closes depending on the medium pressure. In addition, the valve is built into the pipeline, which occupies less space and is easy to disassemble.

Description

Easy to disassemble built-in pressure reducing valve

technical field

The present invention relates to a decompression valve, in particular to an easily detachable built-in decompression valve.

Background technique

Among various types of valves, the pressure reducing valve is one of the most widely used. The pressure reducing valve is a special device that automatically reduces the working pressure of the pipeline. Its function is to reduce the higher pressure medium to a certain pressure after a given decompression range. It reduces the high fluid pressure in the line before the valve to the level required in the line after the valve.

Pressure reducing valves are widely used in high-rise buildings, areas where the water pressure of urban water supply pipe networks is too high, mines and other occasions to ensure that each water point in the water supply system obtains appropriate service water pressure and flow. It reduces the waste of water and makes the flow distribution of the system reasonable, improves the layout and working conditions of the system and plays a role in energy saving. There are also some pressure reducing valves applied to gas to ensure the gas pressure behind the valve.

Because the water flow through the pressure reducing valve has a large head loss, when the opening is small, the flow surface is small, resulting in a large flow velocity of the medium, which will cause cavitation and reduce the service life of the valve. The general pressure reducing valve is larger in size and more complicated to install; it is not easy to disassemble and replace after the valve is damaged. Therefore, it is of great practical significance to develop a pressure reducing valve that can reduce valve cavitation and is easy to disassemble and maintain.

Contents of the invention

In order to overcome the disadvantages of the pressure reducing valve in the background technology, the object of the present invention is to provide a built-in pressure reducing valve that is easy to disassemble, so as to reduce the cavitation of the valve to a certain extent and improve the service life of the valve. The built-in structure facilitates the disassembly, maintenance and replacement of the valve.

The technical scheme adopted in the present invention is:

The present invention includes two flanges, a valve body, a set of control springs, a fixed fence, a movable fence, a spring fixed plate and gaskets; a valve body is installed coaxially between the two flanges, along the The valve body is sequentially equipped with a fixed fence, a gasket, a movable fence, a spring and a spring fixed plate. The fixed fence is fixed at the inlet end of the valve body, the gasket is fixed on the fixed fence, and the spring fixed plate is fixed on the valve body. At the outlet end, the movable fence is connected with the spring fixed plate through the spring; the fixed fence and the spacer have a circle with the center of the fixed fence as the center of a circle with an equally divided fan-shaped flow channel, and the movable fence is opened to move the fence. There are equally divided fan-shaped runners in a circle with the center as the center of the circle, and the number of two sets of fan-shaped runners is the same and cross-distributed.

The included angle of each fan-shaped runner on the fixed fence is 20°, and the interval between the two runners is 16°; the included angle of each fan-shaped runner on the mobile fence is 14°, and the interval between the two runners The interval between the runners is 22°, and the intersection angle between two sets of fan-shaped runners is 18°.

The center of the fixed fence is a circular plate with a diameter of 1/10; the center of the movable fence is a circular plate with a diameter of 1/10.

The beneficial effects that the present invention has are:

The invention has the function of a pressure-reducing valve. When closing and opening the valve, the two ends of the control spring are fixed on the movable fence and the spring fixing plate, and the movable fence moves left and right to control the opening of the valve. In addition, the valve is built into the pipeline, which occupies less space and is easy to disassemble.

The invention can solve the needs of high-rise buildings, areas where the water pressure of urban water supply pipe networks is too high, mines and other occasions.

Description of drawings

Figure 1 is a structural schematic diagram of a pressure reducing valve.

Fig. 2 is a structural schematic diagram of a section of a fixed fence.

Fig. 3 is a structural schematic diagram of a section of the moving fence.

Fig. 4 is a structural schematic diagram of a section of a spring fixing plate.

In the figure: 1, flange, 2, valve body, 3, control spring, 4, fixed fence, 5, movable fence, 6, spring fixed plate, 7, spacer.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

As shown in Figures 1, 2 and 3, the present invention includes two flanges 1, a valve body 2, a set of control springs 3, a fixed fence 4, a movable fence 5, a spring fixed plate 6 and a gasket 7; A valve body is coaxially installed between the two flanges 1, and the valve body along the inlet end to the outlet end is sequentially equipped with a fixed fence 4, a gasket 7, a movable fence 5, a spring 3 and a spring fixed plate 6, and a fixed fence 4 is fixed at the inlet end of the valve body, the gasket is fixed on the fixed fence 4, the spring fixed plate 6 is fixed at the outlet end of the valve body, the movable fence 5 is connected with the spring fixed plate 6 through the spring 3; the fixed fence The plate 4 and the spacer 7 have a circle with the center of the fixed fence as the center of a circle with an equally divided fan-shaped flow channel, and the movable fence 5 has a circle with the center of the movable fence as a circle with an equally divided fan-shaped flow channel. The number of runners is the same and cross-distributed.

As shown in Figure 2, the included angle of each fan-shaped runner on the fixed fence is 20°, and the interval between the two runners is 16°; The angle between two fan-shaped runners is 14°, the interval between two runners is 22°, and the intersection angle between two sets of fan-shaped runners is 18°.

As shown in Figure 2, the center of the fixed fence 4 is a circular plate with a diameter of 1/10; as shown in Figure 3, the center of the movable fence 5 is a circular plate with a diameter of 1/10. There are three spring slots in the moving fence 5; the moving fence 5 is clearance fit with the valve body pipe wall.

The working principle of the present invention is:

As the pressure of the fluid on the valve fence gradually increases, when the pressure is greater than the spring force of the spring, the two sets of mutually interlaced fences will be separated, and the pressure reducing valve will automatically open. The liquid passes through the fan-shaped flow channel of the fixed fence, passes through the opened gap, and flows out from the fan-shaped flow channel of the movable fence. When the pressure is less than the spring force of the spring, the pressure reducing valve is automatically closed.

The present invention aims to solve some of the disadvantages of modern valves by combining the principles of split flow decompression and anti-cavitation. Provide a pressure reducing valve with a built-in structure that facilitates disassembly, maintenance and replacement of the valve, thereby reducing valve cavitation to a certain extent and improving the service life of the valve. And the built-in structure facilitates the disassembly, maintenance and replacement of the valve.

Claims (3)

1. An easy-to-disassemble built-in pressure reducing valve, characterized in that it includes two flanges (1), a valve body (2), a set of control springs (3), a fixed fence (4), a movable fence (5 ), a spring fixing plate (6) and a gasket (7); a valve body is coaxially installed between the two flanges (1), and a fixed fence (4) is installed in sequence along the valve body from the inlet end to the outlet end, and the gasket piece (7), moving fence (5), spring (3) and spring fixing plate (6), fixed fence (4) is fixed at the inlet end of the valve body, gasket is fixed on the fixed fence (4) , the spring fixed plate (6) is fixed at the outlet end of the valve body, the movable fence (5) is connected with the spring fixed plate (6) through the spring (3); the fixed fence (4) and the gasket (7) have There are equally divided fan-shaped runners in a circle centered on the center of the fixed fence, and there are equally divided fan-shaped runners in a circle centered on the center of the movable fence (5). The number of fan-shaped runners in the two groups is the same cross distribution. 2. An easy-to-detach built-in pressure reducing valve according to claim 1, characterized in that: the included angle of each fan-shaped flow channel on the fixed fence is 20°, and the interval between the two flow channels is 16°. °; the included angle of each fan-shaped runner on the moving fence is 14°, the interval between two runners is 22°, and the intersection angle of two groups of fan-shaped runners is 18°. 3. An easy-to-detach built-in pressure reducing valve according to claim 1, characterized in that: the center of the fixed fence is a circular plate with a diameter of 1/10 of the diameter; the center of the movable fence is a circular plate with a diameter of 1/10 diameter circular plate.

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