CN2072177U

CN2072177U - Dual-purpose valve with retaining valve disc

Info

Publication number: CN2072177U
Application number: CN 90208533
Authority: CN
Inventors: 郭平松
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-06-09
Filing date: 1990-06-09
Publication date: 1991-02-27

Abstract

The utility model relates to a dual-purpose valve with non-return gate, which has the structure that a suspension non-return valve disc which can open or close a valve base is arranged in a valve body. Thus, a butting convex part is formed on the middle of the top surface of the outlet side of the valve disc. A valve rod which is provided with a hand wheel is vertically arranged on the side upper part of the valve body approaching to the valve disc. The lower end of the valve rod is connected with a barrel-shaped butting part which can move up and down with the valve rod. The lower end of the barrel-shaped butting part is butted with the butting convex part.

Description

Dual-purpose valve with retaining valve disc

The utility model relates to a kind of circulation of may command fluid and flow and can prevent the check gate dual purpose valve of fluid reflux.

Suspension type safety check (Swing Check Valve) commonly used and gate valve are the valves that often uses in the pipeline, this safety check is to carry out the switching of valve seat with its valve disc that can swing, thereby prevent fluid reflux, it is simple structure not only, and the non-return effect is good, and, because the path direction that fluid passes in and out changes seldom, can carry out the circulation of full flow when the valve standard-sized sheet, reduce the resistance of convection cell in its valve, so, have the effect that is beneficial to fluid flow especially as gate valve.But, this safety check does not have the structure and the function that open and close control fluid and adjustment flow of gate valve and general stop valve, its purposes is restricted, for this reason, often must dispose switching and the adjustment that a stop valve carries out fluid in circuit design, and increase equipment and mounting cost, and be its a fly in the ointment, this problem awaits improving and solves.

The purpose of this utility model is to address the above problem, and a kind of check gate dual purpose valve of innovative construction is provided.

Its structure of check gate dual purpose valve that the utility model proposes is to be provided with a suspension type check valve disc that can open and close valve seat in valve body, the about neutral position of outlet side end face at valve disc is formed with a butt protuberance, hang down in the side top of contiguous this valve disc of valve body again and be provided with the valve rod of handwheel, the valve rod lower end is connected with a cylindrical shell shape abutting part that can move up and down with valve rod, the butt protuberance butt of this tubular abutting part and this valve disc.

The check gate dual purpose valve that the utility model proposes forms the shaft-like guide protrusion of a pair of horizontal protrusion in the described low both sides, cylindrical shell lower end that meet portion, this is embedded in a pair of being arranged with in the inboard corresponding guide groove of the valve chamber of this valve body slidably to projection.Can be formed with one towards the side of this check valve disc in the cylindrical shell lower end of described abutting part must be in the ora terminalis of the curved butt projection of butt.

Said structure is except that having check function, still can pass through hand wheel, interlock is moved up and down in the abutting part of valve rod lower end, the change of the butt position of abutting part and valve disc butt protuberance whereby simultaneously, can reach the purpose of switching of control valve disc and open amount thereof, make the utility model have safety check and two kinds of functions of stop valve concurrently, and when this valve standard-sized sheet, have the effect as gate valve, it is minimum that the flow direction is changed.

Below an embodiment of the safety check that just the utility model proposes according to accompanying drawing be described as follows:

Fig. 1 be check gate dual purpose valve of the present utility model be closed condition vertically cut open front view;

Fig. 2 be check gate dual purpose valve of the present utility model be full-gear vertically cut open front view;

Fig. 3 is that figure is cutd open in the local vertically side-looking that check gate dual purpose valve of the present utility model is closed condition;

Fig. 4 is that figure is cutd open in the local vertically side-looking that check gate dual purpose valve of the present utility model is the abutting part raised state;

As shown in the figure, the check gate dual purpose valve that the utility model proposes mainly is made up of following parts: valve body 1; Be located at a suspension type check valve disc 2, valve seat 3, valve rod 4, handwheel 5 on this valve body 1; An and abutting part 6 of being located at these valve rod 4 lower ends.

As shown in drawings, this suspension type check valve disc 2 and valve seat 3 have the structure of general suspension type safety check, and valve disc 2 can swing up and down by pivot 11, and has the function of non-return liquid.But the end face adjacent central place one of suspension type check valve disc 2 of the present utility model convexes with a butt protuberance 21(and holds its function of back explanation).

Hang down and be provided with control a valve rod 4 and a handwheel 5 in the side top of above-mentioned suspension type check valve disc 2.Bottom at valve rod connects an abutting part 6 thereon with thread structure 7, and this abutting part can move up and down with valve rod 4.

Above-mentioned abutting part 6 inside are provided with the cylindrical shell of a up/down perforation tapped through hole 61, the both sides, lower end of abutting part 6 form the shaft-like guide protrusion 62 of a pair of horizontal protrusion, and this slidably is embedded in a pair of valve chamber that the is opened in valve body 1 12 inboard corresponding vertical guide slot 13 freely to guide protrusion 62.The ora terminalis of curved butt projection 63 that is formed with butt protuberance 21 butts of sharp and this valve disc 2 at least towards the cylindrical shell lower end side of this check valve disc 2 in abutting part 6, but this butt projection 63 and nonessential setting can not, if directly the cylindrical shell lower end with abutting part 6 also is feasible as the butt position,, this 63 of butt projection can make butt comparatively along sliding but being set.On the other hand, the side of going up with butt projection 63 symmetries of abutting part 6 also is formed with a butt projection 63, needn't consider directivity when making assembling, and when abrasion, also exchangeable use.

The abutting part 6 of said structure can move up and down freely by the rotation of valve rod 4 and the guiding of guide groove 13, and, can its butt projection 63 and cylindrical shell bottom surface 64 be pressed against on the butt protuberance 21 of this valve disc 2.

When the utility model was closed, Fig. 1, shown in Figure 2, its abutting part 6 were reduced to lower position, and butt projection 63 is pressed against above the butt protuberance 21 of check valve disc 2, and check valve disc 2 is pressed against on the valve seat 3, and valve cuts out.At this moment, the guide protrusion 62 of abutting part 6 is supported by the guide groove 13 of valve body 1, and unlikely crooked Off center position, when even valve disc 2 is subjected to the suction side fluid pressure action, the also unlikely pressurized of abutting part 6 and crooked off normal or make valve rod 4 distortion, no matter so just make abutting part 6 when up and down any position and valve disc 2 butts, all can be firmly, butt successfully, valve cuts out effectively or that its open amount is stablized is constant.

When rotation hand wheel 5 during by the abutting part 6 of interlock poppet stem 4 lower ends of valve rod 4 (please refer to Fig. 2 and Fig. 4), can carry out the unlatching of valve disc 2, this open amount can be adjusted according to the lifting position of abutting part 6, promptly according to the butt projection 63 of abutting part 6 and the change of the butt position between lower end surface 64 and the valve disc 2 butt protuberances 21, can carry out the adjustment of open amount, then can carry out the closing of valve at the suction side hydrodynamic pressure during less than outlet side pressure when check valve disc 2, fluid can not be refluxed.The utility model not only has the function of safety check, more has the switching of general stop valve concurrently and adjusts function.

As the solid line among Fig. 2 and Fig. 4 is the state that the utility model is standard-sized sheet, at this moment, abutting part 6 is promoted to uppermost position, when fluid through out-of-date, then this suspension type check valve disc 2 is full-gear (as shown in Figure 2) above being rocked to by closed position (as shown in Figure 4), this moment, the butt protuberance 21 of valve disc 2 supported the bottom surface, lower end 64 that terminates in this abutting part 6 and standard-sized sheet, can be during this valve standard-sized sheet for the circulation of fluid full flow, so the utility model is also had a function of full flow circulation of gate valve.

By above-mentioned check gate dual purpose valve of the present utility model, reach the structure of the abutting part 6 that can move up and down linkedly by valve rod 4 because of the butt protuberance 21 of its pendulum-type check disk 2, can control the switching and the open amount adjustment of this check valve disc 2 by the operation of handwheel 5, make the utility model except that the function of non-return fluid with safety check, also have the switching of general stop valve and the function of adjustment aperture concurrently, when the valve standard-sized sheet, has full flow circulating function as gate valve, effect with a valve three usefulness, can exempt pipeline need dispose safety check respectively and stop (containing gate valve) device, simplified the structure of pipeline, economy system and mounting cost have practicability.

Claims

1, a kind of check gate dual purpose valve, its structure is to be provided with a suspension type check valve disc that can open and close valve seat in valve body, the about neutral position of outlet side end face at valve disc forms a butt protuberance, it is characterized in that also hangs down above the side of contiguous this valve disc of valve body is provided with the valve rod of handwheel, the valve rod lower end is connected with a tubular abutting part that can move up and down with valve rod, the butt protuberance butt of this cylindrical shell abutting part and this valve disc.

2, check gate dual purpose valve as claimed in claim 1, it is characterized in that: form the shaft-like guide protrusion of a pair of horizontal protrusion in the both sides, cylindrical shell lower end of this abutting part, this is embedded in a pair of being arranged with in the inboard corresponding guide groove of the valve chamber of this valve body slidably to projection.

3,, it is characterized in that to form towards the side of this check valve disc an ora terminalis that is beneficial to the curved butt projection of butt in the cylindrical shell lower end of this abutting part as claim 2 or 3 described check gate dual purpose valves.