CN2227768Y - Cock compound valve - Google Patents

Abstract

The utility model relates to a screwing type compound valve, and is a valve which can be applied to various medium pipelines. The utility model simultaneously has the functions of a stop valve and a non-return valve. The utility model is characterized in that a valve disc and a valve rod are split into two bodies; the valve disc is hinged on the valve body; the valve disc rotates around a hinge. When the valve rod is upwards lifted, the valve disc is upwards screwed under the action of the medium, and the screwing height is controlled by the valve rod. When the medium reflows, the valve disc downwards rotates under the functions of the self weight and the medium pressure, and the non-return function is completed. The utility model has the advantages of simple structure and simple manufacture.

Description

The rotary-open type combination valve

The utility model belongs to valve technology neck city, is the improvement to existing valve.

Present stop valve or safety check only have a kind of function, and promptly stop valve can only play the effect that opens and closes and regulate rate-of flow, pressure, can not prevent that medium from flowing backwards.Safety check can only play the effect that prevents that medium from flowing backwards, and can not regulate the flow and the pressure of medium.To prevent promptly that because of ending medium from flowing backwards at pump discharge and other, regulate again in the pipeline of rate-of flow, pressure, supporting installation just need be together in series stop valve and safety check, so promptly cause waste economically, having increased the local resistance in the pipeline again, also is that installation and maintenance have increased workload.Patent 91224180.2 combination valves and the utility model belong to a series together, but 91224180.2 combination valves can only be installed on the horizontal pipe, and resistance is big.

The purpose of this utility model is to overcome existing stop valve, non-return cuts and the existing above-mentioned deficiency of 91224180.2 combination valves, provide a kind of have stop valve and two kinds of functions of safety check, can open and close and regulate rate-of flow, pressure, can prevent that again medium from flowing backwards, and can be installed on the little flat or vertical pipe the complete again valve of rotary-open type that resistance is less.

Major character of the present utility model is that valve disc is hinged on the valve body, and valve disc and valve rod are divided into two bodies.When opening, valve rod is upwards carried, and valve disc is in the pressure medium effect spin-up that makes progress, and the height of spin-up is subjected to valve rod control, and when medium back flow, valve disc rotates the sealing valve port in deadweight and pressure medium effect, plays the non-return effect, thereby realizes the function of two kinds of valves.

Accompanying drawing is that the rotary-open type combination valve cuts open schematic representation.

1 is valve body, and valve gap 18 connects with bolt 6,7 in valve body 1 upper end, and the centre accompanies pad 19; 8 is the packing in the valve gap, 9 is packing gland, packing 8 is contained in the valve gap, gland 9 is on packing 8, gland 9 and valve gap 18 usefulness bolts 15,16, packing ring 17 connect solid, valve rod 20 penetrates in gland 9, packing 18, the valve rod epimere is provided with thread section, suit internal and external threads pipe 10, and be screwed with fastening screw trip bolt 14, handwheel 11 and set screw nut 12, packing ring 13 are equipped with in the upper end, the valve rod lower end is conical, withstands in the V-shaped groove of valve disc 2, and axle 4 is fixed on the valve body, valve disc 2 and connecting plate 3 can rotate around axle 4, valve disc with is connected between with pin 5 connections.Pin 5 can make between connecting plate and valve disc minor rotation, to guarantee that valve disc contacts tightly with valve body sealing surface.One V-shaped groove is arranged on the valve disc, and the valve rod lower end is conical, withstands on just in the V-shaped groove of valve disc.

This valve possesses the function of two kinds of valves simultaneously, and it promptly possesses the switching of stop valve and regulates rate-of flow, the function of pressure, and what possess safety check again prevents medium refluence function, can be installed on level and the vertical pipe.In use promptly reduce engineering cost, can reduce manifold pressure loss again, reduce the program in installation and maintenance workload and the design, this valve arrangement is simple, is easy to make, and is adapted at using on the pipeline of various media.

Claims (1)

1. Rotary-open type combination valve formation includes valve body 1, valve gap 18 is in the valve body upper end, valve body and valve gap bolt 6,7 connect, packing 8 is contained in the valve gap, gland 9 is on packing 8, gland 9 and valve gap 18 usefulness bolts 15,16, packing ring 17 connects solid, valve rod 20 penetrates at gland 9, packing 8, in the valve gap 18, the valve rod epimere is provided with thread section, suit internal and external threads pipe 10, and be screwed with fastening screw trip bolt 14, handwheel 11 and set screw nut 12 are equipped with in the upper end, packing ring 13, valve rod lower end are conical, withstand in the V-shaped groove of valve disc 2, axle 4 is fixed on the valve body 1, valve disc 2 and connecting plate 3 can rotate around axle 4, are connected with pin 5 between valve disc and connecting plate

   It is characterized in that: valve disc 2 is hinged on the valve body 1, and valve rod 20 and valve disc are divided into two bodies, and valve disc can be around axle 4 spin-ups, and valve rod withstands on the valve disc.

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