CN2103054U

CN2103054U - Compound valve

Info

Publication number: CN2103054U
Application number: CN 91224180
Authority: CN
Inventors: 祁玉东
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-08-31
Filing date: 1991-08-31
Publication date: 1992-04-29

Abstract

The utility model discloses a compound valve used as a valve for various medium pipelines. The compound valve has the dual performance of a check valve and a stop valve. The compound valve is characterized in that the front end of a valve rod is provided with a valve tongue which can be slid on the front section of the valve rod up and down; when the valve rod is moved upwards, the valve tongue can be moved upwards under the action of the medium, and the moving distance of the valve tongue is controlled by the valve rod. When the medium flows back, the valve tongue is moved downwards under the action of the pressure of the medium, and the check function can be completed. The utility model has the advantages of simple structure and easy manufacture.

Description

Compound valve

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

Being installed in ducted safety check or stop valve as required is the valve that independent function is respectively arranged, and promptly safety check can only play the effect that prevents that pipeline medium from flowing backwards, can not controlling plumbing fixtures medium flow and pressure; Stop valve can only play and open and close and the effect of control media flow, pressure, and can not play the non-return effect.When therefore in pump discharge or pipeline, needing the medium refluence and opening the valve control flow rate, supporting installation just need be together in series safety check and stop valve, so promptly cause waste economically, increased the local resistance in the pipeline again, also for installing and maintenance increase workload.

The purpose of this utility model is to overcome existing safety check, the existing above-mentioned deficiency of stop valve, provide a kind of have safety check and two kinds of functions of stop valve, can open and close controlling flow and pressure, can prevent the flow backwards combination valve of two kinds of effects of medium again.

Major character of the present utility model is that the clack valve in the valve is enclosed within the valve rod front end, is to slide up and down mobile clack valve at the valve rod front end.Valve rod makes progress when opening, and clack valve moves up under the pressure medium effect, and displacement distance is subjected to valve rod control, and when medium back flow, clack valve automatically to lower slider draught excluder mouth, plays the non-return effect in the pressure medium effect, thereby realizes the effect of two kinds of valves.

Accompanying drawing is the combination valve generalized section;

Formation contrast accompanying drawing of the present utility model is illustrated:

1 is valve body, and valve gap 4 connects with bolt 14,15 in valve body 1 upper end, and the centre accompanies pad 16; 5 is the packing in the valve gap, and 6 is the gland of packing, and connects gland and valve gap solid with bolt 12,13; Valve rod 3 penetrates in packing 5, gland 6, valve gap 4, the valve rod leading portion is provided with chimb, chimb front end, and clack valve 2, the clack valve 2 that can slide up and down before the valve rod chimb are housed is a clack valve that the endoporus tube is arranged, a following diameter of clack valve is greater than epimere endoporus tube diameter, and clack valve 2 front ends are seated in the inlet in the valve body; The valve rod epimere is provided with thread section, suit threaded pipe 7; 8 for being contained in the handle on the

valve rod

3, and 9,10 is the hold-doun nut pad, and 11 is the fastening screw trip bolt of threaded pipe.

This valve possesses the usability of two kinds of valves simultaneously, and what it had both possessed safety check prevents medium refluence performance, possesses the open and close controlling rate-of flow of stop valve again, the performance of pressure.In use both reduced engineering cost and saved fund, and can reduce the manifold pressure loss again, and can reduce the program in installation and maintenance workload and the design again, this valve arrangement is simple, is easy to make, and uses on the pipeline of suitable various media.

Claims

The formation of combination valve includes valve body 1, valve gap 4 is in the valve body upper end, valve body and valve gap bolt 14,15 connect, packing 5 is contained in the valve gap, gland 6 is on packing 5, gland 6 and valve gap 4 usefulness bolts 12,13 connect admittedly, and valve rod 3 penetrates at gland 6, packing 5, in the valve gap 4, valve rod 3 epimeres are provided with thread section, suit threaded pipe 7, and be screwed with fastening screw trip bolt 11, handle 8 and hold-doun nut 9 are equipped with in the upper end, pad 10, the feature of this valve is: the leading portion at valve rod 3 is provided with chimb, the chimb leading portion is equipped with the clack valve 2 that can slide up and down before the valve rod chimb, clack valve 2 is the clack valve of an endoporus tube, and a following diameter of clack valve is greater than epimere endoporus tube diameter.