CN201475445U - An angle ball check valve - Google Patents

Abstract

The utility model discloses an angle-type spherical check valve, which comprises a valve body, a valve cover and a spherical valve core. The axis lines of the water inlet and outlet on the valve body are vertically intersected. The valve chamber of the utility model has a large flow cross section, a small fluid resistance, is not easy to generate cavitation, and has a short moving distance of the valve core, a short closing time, and is not easy to generate destructive water hammer. The check valve can be directly installed on the bend of the pipeline instead of the elbow, which can reduce the number of elbows used. In addition, the valve has a simple structure, fewer parts, less machining, and lower manufacturing costs.

Description

An angle ball check valve

technical field

The utility model relates to a spherical check valve, in particular to a spherical check valve used in tap water and sewage treatment pipelines.

Background technique

At present, the general-purpose spherical check valve is linear, and the water inlet and outlet are on a straight line. Due to the limited volume of the valve cavity, the fluid resistance is relatively large, and the opening and closing distance of the valve core is relatively large, so that the closing time of the valve is relatively long. Easily prone to destructive water hammer.

Contents of the invention

The purpose of the utility model is to provide an angle type spherical check valve, which has a large valve cavity, small fluid resistance, short closing time and is not easy to produce destructive water hammer.

The utility model is realized in the following way: it comprises a valve body, a valve cover and a spherical valve core, and the axis lines of the inlet and outlet ports on the valve body are vertically intersected. Since the water inlet and outlet are not in a straight line in space, the check valve is in the shape of an elbow. The valve cavity not only has a large flow cross section and small fluid resistance, but also has a short moving distance of the valve core and a short closing time, which is not easy to cause destructive water hammer. .

In order to prevent the spool from blocking the water outlet, the valve body is provided with a block in the inner valve cavity of the water outlet end to restrict the spool from entering the water outlet.

In order to quickly and lightly drop the valve core to the water inlet when closing, thereby increasing the closing speed, the preferred solution of the utility model is that the inner side of the valve cover is provided with guide ribs that limit the rising height of the valve core. Like this, the valve core can move up and down in the valve chamber along the guide ribs, which can increase the opening and closing speed.

Because the water outlet on the valve body and the water inlet are vertically intersected by the utility model, the flow section of the valve cavity is large, the fluid resistance is small, cavitation is not easy to occur, and the moving distance of the valve core is short, the closing time is short, and destructive water hammer is not easy to occur . The check valve can be directly installed on the bend of the pipeline instead of the elbow, which can reduce the number of elbows used. In addition, the valve has a simple structure, fewer parts, less machining, and lower manufacturing costs.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a sectional view of the valve cover in Fig. 1 along line A-A.

Detailed ways

As shown in Fig. 1 and Fig. 2, the utility model is made up of valve body 3, valve cover 5 and spherical valve core 2, and sealing ring 4 is arranged between valve body 3 and valve cover 5, and water outlet 8 is located at valve body 3- On the side, the water outlet 8 is perpendicular to the axis lines 7 and 10 of the water inlet 1, and the valve body 3 is provided with a stopper 9 inside the valve chamber at the end of the water outlet 8 to restrict the valve core 2 from entering the water outlet, and the inner side of the valve cover 5 There are guide ribs 6 that limit the rising height of the spool 2.

The valve shown in Figure 1 is closed. When water enters, the valve core 2 is held up by the water flow and moves upwards obliquely along the lower side of the guide rib 6 to the side of the water outlet 8 to the stopper 9, which is the position shown by the dotted line in Fig. 1 . After the water intake is stopped, the valve core 2 falls back to the top of the water inlet 1 along with the water flow, so that the valve is closed.

Claims (3)

1. An angle type spherical check valve, comprising a valve body (3), a valve cover (5) and a spherical valve core (2), is characterized in that the inlet and outlet ports (1, 8) on the valve body (3) The axis lines (10, 7) of are vertically intersected. 2. The angle ball check valve according to claim 1, characterized in that the valve body (3) is provided with a stopper ( 9). 3. The angle ball check valve according to claim 1 or 2, characterized in that the inside of the valve cover (5) is provided with guide ribs (6) that limit the rising height of the valve core (2).

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