CN203868422U

CN203868422U - Integrated duplex ball valve

Info

Publication number: CN203868422U
Application number: CN201420309185.XU
Authority: CN
Inventors: 姜忠义; 席龙飞; 江浩; 吴梦培
Original assignee: WENZHOU ZHONGYI GROUP Co Ltd
Current assignee: WENZHOU ZHONGYI GROUP Co Ltd
Priority date: 2014-06-04
Filing date: 2014-06-04
Publication date: 2014-10-08
Anticipated expiration: 2024-06-04

Abstract

An integrated duplex ball valve comprises connectors, an exhaust valve, a packing gland, a valve rod, valve seats, a valve seat spring, a valve body, a stationary shaft, a composite bearing and ball bodies. The whole valve is of a three-section structure, the connectors are arranged at the two ends of the valve body, the valve body is in flanged joint with the connectors, the two valve seats and the two ball bodies are arranged in a cavity of the valve body, the two valve seats form two sealing pairs, a port for releasing medium pressure is formed in the middle cavity of the valve body, and the exhaust valve is arranged at the outer end of the port; a groove is formed in the upper portion of each ball body, the valve rod is arranged in a bottom-mounted mode, the bottom end of the valve rod is of an inverse sealed structure and embedded into the grooves, and V-shaped packing is arranged on the side edge of the valve rod. By the adoption of the integrated duplex ball valve, hydraulic resistance is minimum, the pressure of each inlet is isolated through the valve, a cavity between the valve seats is evacuated, double insurance is realized, leakage is prevented, operation is convenient, and service life is prolonged.

Description

Integral type Two-way flow ball valve

Technical field

The utility model relates to a kind of ball valve, and particularly a kind of integral type Two-way flow ball valve has the valve of two sealing pairs.

Background technique

In fluid field, in duct chamber, be full of liquid or gas, and because technological process or extraneous thermal source are heated, pressure just can rise under the thermal expansion effects of pipeline intracavity liquid or gas.If there is no drainage function, the rising of pressure may cause pipeline overvoltage and occur leaking or breaking.Generally that two stop valves and an escape cock are installed, when requirement is drained at valve pocket, upstream extremity valve seat and downstream end valve are all in closed condition, need when mounted to debug the flow center line of three valves, to check out the source of leaks on valve seat simultaneously, valve need be pulled down just and can be checked out from pipeline, cumbersome, increase user cost, cause economic loss.

Model utility content

For the deficiency of existing product design, the utility model provides a kind of integral type Two-way flow ball valve, comprises connecting body, outlet valve, Gland, valve rod, valve seat, seating spring, valve body, stationary axle, composite bearing, spheroid.

The utility model solves the technological scheme that its technical problem adopts: whole valve is three stage structure, connecting body is established at valve body two ends, valve body is that flange-type is connected with connecting body, in valve body chamber, be provided with two valve seats, two spheroids, two valve seats form two sealing pairs, valve body in lumen arranges the interface of the pressure medium of releasing, and outlet valve is settled in interface outer end; Spheroid top is provided with groove, and valve rod is down-mounting type setting, and valve rod bottom is set to back seal ledge structure, and valve rod bottom embeds groove, and valve rod side is provided with filler, and filler is V-type project organization.

The beneficial effects of the utility model are: fluid resistance is minimum, and valve is isolated the pressure of each entrance, and the function of cavity between emptying valve seat, reach dual fail-safe Leakage prevention, easy to operate, increase the service life.

Accompanying drawing explanation

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

In figure, 1, connecting body, 2, outlet valve, 3, Gland, 4, valve rod, 5, valve seat, 6, seating spring, 7, valve body, 8, stationary axle, 9, composite bearing, 10, spheroid.

Embodiment

As shown in the figure, the utility model patent comprises connecting body 1, outlet valve 2, Gland 3, valve rod 4, valve seat 5, seating spring 6, valve body 7, stationary axle 8, composite bearing 9, spheroid 10.Whole valve is three stage structure, and connecting body 1 is established at valve body 7 two ends, and valve body 7 for flange-type is connected, is provided with two valve seats 5, two spheroids 10 with connecting body 1 in valve body 1 chamber, and the rear end of valve seat 5 is provided with seating spring 6, has improved sealing effect and working life; Two valve seats of valve 5 form two sealing pairs, two valve seats 5 can play blocking-up two ends line pressure, when closed position, two sealing pairs can keep sealing state simultaneously, valve body in lumen arranges the interface of the pressure medium of releasing, outlet valve 2 is settled in interface outer end, valve is at two ends simultaneously during pressurized, medium in valve pocket can be released from the outlet valve 2 of valve, the upstream and downstream medium of valve can not continue to enter valve lumen, after the cavity of emptying valve base chamber, user is without valve is pulled down to all source of leaks that just can check out on valve seat from pipeline; Spheroid 10 bottoms are provided with groove, at the bottom of ball, groove is square structure, in groove, be provided with composite bearing 9, stationary axle 8 one end are connected to the composite bearing 9 in groove, stationary axle 8 the other ends are connected and fixed shaft pressuring plate, stationary axle pressing plate is fixed on valve body 7 bottoms, and stationary axle and stationary axle pressing plate form " T " word structure; Spheroid 10 tops are provided with groove, valve rod 4 is down-mounting type setting, valve rod 4 bottoms are set to back seal ledge structure, valve rod 4 bottoms embed groove, the sealing force of back seal step is with the increase of increasing of valve pocket pressure medium, thereby guarantee the sealing effect of valve rod 4, when valve pocket boosts extremely, valve rod 4 can not be rushed out; Valve rod 4 sides are provided with filler, and filler is V-type project organization, the coupling mechanism force of the pressure medium of valve pocket inside and Gland 3 effectively can be changed into the sealing force of valve rod, increase the service life.

Claims

1. an integral type Two-way flow ball valve, comprise connecting body, outlet valve, Gland, valve rod, valve seat, seating spring, valve body, stationary axle, composite bearing, spheroid, it is characterized in that: whole valve is three stage structure, connecting body is established at valve body two ends, valve body is that flange-type is connected with connecting body, in valve body chamber, be provided with two valve seats, two spheroids, the valve body in lumen arranges the interface of the pressure medium of releasing, and outlet valve is settled in interface outer end; Spheroid top is provided with groove, and valve rod is down-mounting type setting, and valve rod bottom embeds groove, and valve rod side is provided with filler.

2. integral type Two-way flow ball valve according to claim 1, is characterized in that: two described valve seats form two sealing pairs.

3. integral type Two-way flow ball valve according to claim 1, is characterized in that: described valve rod bottom is set to back seal ledge structure.