CN211975983U - Angle type high-pressure check valve - Google Patents

Abstract

The utility model discloses an angle type high pressure check valve. The utility model is composed of a valve body, a valve cover, a guide seat, a valve disc, a valve seat, a spring and an isolation sleeve. The valve body is provided with a water inlet and a water outlet. The lower end of the valve body is equipped with a guide seat, the guide seat is equipped with a spring, the upper end of the spring is equipped with a valve disc, the upper end of the valve disc is equipped with a valve seat, the upper end of the valve seat is equipped with an isolation sleeve, and the upper end of the isolation sleeve is equipped with a valve cover. The valve disc is at the lower end of the valve seat, the upper end of the valve seat is provided with an isolation sleeve, the isolation sleeve is provided with a middle hole, the middle side of the isolation sleeve is provided with a flow channel hole, and the flow channel hole communicates with the water inlet of the valve body. The water inlet is at the upper part of the valve body, and the water outlet is at the lower end of the valve body. The utility model has the advantages that the valve structure is simple, the valve seat and the valve disc are easily machined, the quality of the sealing surface can be guaranteed, the valve sealing performance is good, the opening and closing is flexible, and the service life is long. The angle check valve is installed on the pipeline with the bonnet in the vertical upward direction, the bonnet falling off cannot cause personal injury, and the valve is safe to use.

Description

An angle type high pressure check valve

technical field

The utility model provides an angle type high pressure check valve which is suitable for conveying high pressure medium in petroleum, chemical industry and other industries and can automatically prevent the reverse flow of the medium.

Background technique

At present, the domestic angle type high pressure check valve is generally composed of main parts such as valve body, valve cover, valve seat, valve disc, spring, etc. The valve seat is set in the valve body, and the sealing surface of the valve seat is made of surfacing or welding a metal material On the valve body, it is difficult to process the sealing surface of the valve seat, the processing quality is not easy to guarantee, and it is easy to be damaged by medium scouring under high pressure conditions, and the sealing fails. In addition, the existing angle-type high-pressure check valves are all low-in and high-out. The angle-type check valve is installed on the pipeline and the valve cover is in the horizontal direction. The falling of the valve cover may cause personal injury and safety accidents.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the existing check valve valve seat set in the valve body, the valve seat sealing surface is surfacing or welding a metal material on the valve body, the valve seat sealing surface is difficult to process, and the processing quality of the sealing surface is not easy to ensure , The sealing surface of the valve seat is easily damaged by medium scouring under high pressure conditions, and the sealing fails. The angle check valve is installed on the pipeline and the valve cover is in a horizontal position, and the falling of the valve cover may cause personal injury and cause safety accidents. Provide a valve seat and valve disc, which are integral parts installed in the valve body. The valve seat and valve disc are easy to process, and the quality of the valve seat and valve disc sealing surface can be guaranteed. The angle check valve is installed on the pipeline and the valve cover is vertical. It is an angle type high pressure check valve that can automatically prevent the reverse flow of the medium, and the valve cover is safe to use, has good sealing performance, and has a long service life.

The technical scheme adopted by the utility model to solve the technical problem is as follows: the utility model is composed of a valve body, a valve cover, a guide seat, a valve disc, a valve seat, a spring, and an isolation sleeve; the valve body is provided with a water inlet and a water outlet; The lower end is equipped with a guide seat, the guide seat is equipped with a spring, the upper end of the spring is equipped with a valve disc, the upper end of the valve disc is equipped with a valve seat, the upper end of the valve seat is equipped with an isolation sleeve, and the upper end of the isolation sleeve is equipped with a valve cover.

The valve disc is at the lower end of the valve seat, the upper end of the valve seat is provided with an isolation sleeve, the isolation sleeve is provided with a middle hole, the middle side of the isolation sleeve is provided with a flow channel hole, and the flow channel hole communicates with the water inlet of the valve body.

The water inlet is at the upper part of the valve body, and the water outlet is at the lower end of the valve body.

The utility model has the advantages of simple valve structure, convenient machining of the valve seat and valve disc, guaranteed sealing surface quality, good valve sealing performance, flexible opening and closing, and long service life. The angle check valve is installed on the pipeline, and the valve cover is in the vertical upward direction. The falling of the valve cover cannot cause personal injury, and the valve is safe to use.

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the main sectional view of the embodiment of the present utility model;

In Figure 1, 1 valve cover, 2 isolation sleeve, 3 valve seat, 4 valve disc, 5 spring, 6 guide seat, 7 valve body, A water inlet, B water outlet, C middle hole, D flow channel hole.

Detailed ways

In Figure 1, an angle type high pressure check valve consists of a valve body (7), a valve cover (1), a guide seat (6), a valve disc (4), a valve seat (3), a spring (5), a spacer sleeve (2), the valve body (7) is provided with a water inlet (A) and a water outlet (B), the lower end of the valve body (7) is provided with a guide seat (6), and a spring (5) is installed in the guide seat (6). ), the upper end of the spring (5) is equipped with a valve disc (4), the upper end of the valve disc (4) is equipped with a valve seat (3), the upper end of the valve seat (3) is equipped with an isolation sleeve (2), and the isolation sleeve (2) ) is fitted with a valve cover (1). The valve disc (4) is at the lower end of the valve seat (3), the upper end of the valve seat (3) is provided with an isolation sleeve (2), the isolation sleeve (2) is provided with a middle hole (C), and the middle side surface of the isolation sleeve (2) A flow channel hole (D) is provided, and the flow channel hole (D) communicates with the water inlet (A) of the valve body (7).

The water inlet (A) is at the upper part of the valve body (7), and the water outlet (B) is at the lower end of the valve body (7).

The installation direction of the utility model: when the utility model is installed in a high-pressure pipeline, it is in a high-in and low-out state, the water inlet (A) is at the upper part of the valve body (7), and the water outlet (B) is at the lower end of the valve body (7), When the valve is installed in a high pressure line, the bonnet (1) is in a vertical upward orientation. Contrary to the existing high pressure angle check valve with low inlet and high outlet, the water inlet is at the lower end of the valve body, the water outlet is at the upper part of the valve body, and the valve cover is in the horizontal direction when the valve is installed in the high pressure pipeline.

The working principle of the utility model is as follows: when there is medium pressure at the water inlet (A), the valve disc (4) moves downward under the push of the medium pressure by the compression spring (5), and the valve seat (3) and the valve disc (4) move downward. The contact surface of the valve body (7) forms a gap to form a medium flow channel. The medium reaches the flow channel hole (D) and the middle hole (C) of the isolation sleeve (2) from the water inlet (A) of the valve body (7), from the valve seat and the valve disc. Form the medium flow port to flow to the valve body (7) and the water outlet (B) to output the valve body.

When the water inlet (A) stops entering water, the valve disc (4) moves upward under the elastic force of the spring (5) and the force of the return water pressure, and the valve seat (3) and the valve disc (4) move upward. The sealing surfaces are in close contact to achieve sealing and automatically prevent the reverse flow of the medium.

Claims (3)

1. An angle type high pressure check valve, which consists of a valve body (7), a valve cover (1), a guide seat (6), a valve disc (4), a valve seat (3), a spring (5), an isolation sleeve ( 2) composition, which is characterized in that: the valve body (7) is provided with a water inlet (A) and a water outlet (B), the lower end of the valve body (7) is equipped with a guide seat (6), and the guide seat (6) is equipped with a guide seat (6). The spring (5), the upper end of the spring (5) is equipped with a valve disc (4), the upper end of the valve disc (4) is equipped with a valve seat (3), and the upper end of the valve seat (3) is equipped with an isolation sleeve (2), isolating the The upper end of the sleeve (2) is provided with a valve cover (1). 2. An angle type high pressure check valve according to claim 1, characterized in that: the valve flap (4) is at the lower end of the valve seat (3), and the upper end of the valve seat (3) is provided with an isolation sleeve (2) , the isolation sleeve (2) is provided with a middle hole (C), the middle side of the isolation sleeve (2) is provided with a flow channel hole (D), and the flow channel hole (D) communicates with the water inlet (A) of the valve body (7). . 3. An angle type high pressure check valve according to claim 2, characterized in that: the water inlet (A) is at the upper part of the valve body (7), and the water outlet (B) is at the lower end of the valve body (7).

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