CN2342205Y

CN2342205Y - Silencing check valve

Info

Publication number: CN2342205Y
Application number: CN 98207111
Authority: CN
Inventors: 马明亮; 孟庆海; 赵炳祥
Original assignee: XINGSHUI VALVE FACTORY CANGZHOU CITY
Current assignee: XINGSHUI VALVE FACTORY CANGZHOU CITY
Priority date: 1998-07-28
Filing date: 1998-07-28
Publication date: 1999-10-06
Anticipated expiration: 2008-07-28

Abstract

The utility model provides a silencing check valve, composed of a valve body, a guide sleeve frame, a valve shuttle, a rubber bowl, a pressure plate, a silencing seat, an elastic rubber ring and a connection seat. A guide rod of the valve shuttle is connected with the guide sleeve frame in a movable fit mode, and the rubber bowl and the silencing seat which are arranged on the valve shuttle are contacted and connected in a movable fit mode to realize the closing and the opening of the check valve. The utility model has the advantages of novel structure, tight closing, small running resistance, low noise, diversified installation and convenient use, and is suitable for the technical fields of the building water supplying and discharging, the petroleum, the chemical industry, etc. The utility model is a novel silencing check valve.

Description

Damping check valve

The utility model relates to a kind of valve, especially a kind of being installed on the exit of pump pipeline in order to prevent that when the termination of pumping pressure water stream in the pipeline impacts the safety check of water pump reversing.

In the prior art, common safety check is mainly by valve body, valve connection seat, spool shuttle with help and close spring and form.Because existing safety check system adopts and helps that to close spring action spool shuttle be that rigid plane is touched and closed structure, water hammer pressure impacts the spool shuttle and touches that to close impact noise big when valve is closed, easily cause bad sealing close, especially acting on helping of spool shuttle, to close spring fragile, there is the jam problem in the spool shuttle when the safety check level is installed, the use of valve is restricted, brings inconvenience.

The purpose of the utility model provides a kind of novel structure, close tight, closed noise low, subdue water hammer pressure, valve shuttle flexible operation, can multi-faceted installation, non-return valve easy to use.

For achieving the above object, the technical solution adopted in the utility model is: load guiding stock in an end recess of valve body, be shaped on guide rod on the valve shuttle and plug in the pilot hole that is connected in the guiding stock movingly, be fixedly connected with arc along formula glue bowl by pressing plate on the base plate of valve shuttle, in the other end recess of valve body by fixedly connected flexible rubber ring of connection seat and noise reduction seat, the glue bowl of valve shuttle and noise reduction the seat company of touching are movingly realized the closed of safety check or are opened, and consist of damping check valve.During use; this damping check valve is installed on the exit of pump pipeline; when water pump is shut down; the valve shuttle of pressure water stream promotion safety check moves its glue bowl and noise reduction seat is touched even in the pipeline; with closure of check ring; the noise reduction seat is that circle face flexibility touches because valve shuttle gluing bowl is for the arcuation convex edge is touched even; surface of contact is a damping, buffering ring; and when touching the noise reduction seat, valve shuttle glue bowl compresses flexible rubber ring compensator or trimmer pressure nested on the noise reduction seat again; having formed double-flexibility touches; the moment kinetic energy of water hammer pressure is changed into the work done of compression buffering ring; thereby reduce and subdued the water hammer pressure energy; increase the damping function of closure of check ring, weakened the vibrations that cause of water hammer pressure of moment in the pipeline and thunder, reached the purpose of protection pipeline and water pump.

The utility model has designed guide sleeve and has been connected the valve shuttle guide mechanism of being formed movingly with valve shuttle guide rod; the circle face flexibility that has adopted valve shuttle glue bowl and noise reduction seat to touch composition is movingly touched and is closed structure; and on the noise reduction seat nested flexible rubber ring; consist of double-flexibility and touch structure; can subdue the water hammer pressure in the pipeline effectively; reduce the valve closes noise, protection pipeline and water pump.The existing check valve structure novelty of the utility model, close tight, running resistance is little, noise is low, the motion of valve shuttle flexibly, and can multi-faceted installation, easy to use.It is applicable to having in the water transport pipeline of pressure of fields such as building water supply and drainage, oil, chemical industry, also can be used for carrying in the pipeline of other liquid, and be a kind of novel damping check valve.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the sectional view of the utility model embodiment concrete structure.

Fig. 2 is the plan view of guide sleeve among Fig. 1 (2).

Fig. 3 is the worm's eye view of noise reduction seat (8) among Fig. 1.

As shown in Figure 1, the utility model is made up of valve body (1), guiding stock (2), valve shuttle (3), glue bowl (4), pressing plate (6), noise reduction seat (8), flexible rubber ring (9) and connection seat (5).Load guide sleeve (2) in an end recess of valve body (1), valve shuttle (3) is by chassis and the conjuncted T type valve shuttle of forming of guide rod, valve shuttle (3) is loaded in the inner chamber of valve body (1) its guide rod and plugs in valve shuttle (3) is connected movingly with guiding stock (2) one-tenth, on the chassis of valve shuttle (3), be connected and fixed glue bowl (4) with screw (7) company's of wearing pressing plate (6), glue bowl (4) is the glue bowl on arcuation edge, in the other end recess of valve body (1) by connection seat (5) fixedly connected flexible rubber ring (9) and noise reduction seat (8), cushion rubber (9) is nested on the noise reduction seat (8), and the glue bowl (4) of the last load of valve shuttle (3) and noise reduction seat (8) be the company of touching movingly.

As shown in Figure 3, be shaped on 2-6 uniform recess on the apical ring rim of noise reduction seat (8), and on the tubular body wall of noise reduction seat (8), be shaped on 2-6 uniform through hole.

Claims

1, a kind of damping check valve, comprise valve body, valve shuttle and connection seat, it is characterized in that this damping check valve also comprises guiding stock (2), glue bowl (4), pressing plate (6), noise reduction seat (8) and flexible rubber ring (9), the valve shuttle is by chassis and the conjuncted T type valve shuttle of forming (3) of guide rod, load guiding stock (2) in an end recess of valve body (1), valve shuttle (3) is loaded on its guide rod in valve body (1) inner chamber and plugs in valve shuttle (3) is connected movingly with guiding stock (2) one-tenth, on the chassis of valve shuttle (3), be connected and fixed glue bowl (4) with screw (7) company's of wearing pressing plate (6), in the other end recess of valve body (1) by connection seat (5) fixedly connected flexible rubber ring (9) and noise reduction seat (8), cushion rubber (9) is nested on the noise reduction seat (8), and the glue bowl (4) of the last load of valve shuttle (3) and noise reduction seat (8) be the company of touching movingly.

2, damping check valve according to claim 1 is characterized in that being shaped on 2-6 uniform recess on the apical ring rim of noise reduction seat (8), is shaped on 2-6 uniform through hole on the tubular body wall of noise reduction seat (8).

3, damping check valve according to claim 1 is characterized in that glue bowl (4) is the glue bowl on arcuation edge.