CN204099621U - Multi-functional valve - Google Patents

Abstract

The utility model discloses a kind of multi-functional valve, comprise valve body, be loaded on valve body bonnet and the valve rod through valve gap, the overhanging end of this valve rod is installed with handwheel, it is characterized in that: described valve gap is connected by thread seal with between valve body, between valve gap and valve body, be provided with check plate; Described valve gap has been threaded connection interstage bushing, and the joint tongue of valve rod passes the mortise of interstage bushing; Be provided with valve disc actively in the lower end of valve rod, the position of this valve disc is corresponding with the sealing surface position on valve body; Described interstage bushing lower end is provided with shift fork, and this shift fork is pitched the fork inserting in valve disc actively and inserted on neck; By spring seat, stage clip is installed between valve rod and valve disc.This multi-functional valve can not only have the function of unlatching, closedown, non-return, throttling, and valve opening degree is reliable and stable, and maintaining is simultaneously convenient, long service life.

Description

Multi-functional valve

Technical field

The utility model relates to a kind of valve, particularly relates to a kind of improvement with the multi-functional valve of cut-off and check function.

Background technique

Conventional mostly realizes ending and check function with being flexibly connected of valve disc by valve rod with the valve of check function with cut-off, when the valve is open, utilize the pressure of liquid to keep the opening state of valve, pressure is different, the open degree of its valve is also different, therefore the impact that is stressed of its through-current capability and extremely unstable.

Publication number be 201166131 model utility disclose a kind of multi-functional valve, it comprises valve body, is loaded on the valve gap on valve body and the valve rod through valve gap, the overhanging end of this valve rod is installed with handwheel, described valve body has been threaded connection interstage bushing, and the joint tongue of valve rod passes the mortise of interstage bushing; Be provided with valve disc actively in the inner of valve rod, the position of this valve disc is corresponding with the sealing surface position on valve body; The shift fork of described interstage bushing is pitched the fork inserting in valve disc actively and is inserted on neck.Said structure is interconnected with tenon due to valve rod and interstage bushing, by hand wheel rotating valve rod, the interstage bushing be connected on valve body with screw just can be made to carry out move axially, and the shift fork of interstage bushing is pitched the fork inserting in valve disc actively and inserted on neck, this activity fork is plugged in the fork that shift fork can be formed between the valve disc back side and its convex shoulder and is inserted on neck span and move axially.When shift fork upwards drives valve disc by valve convex shoulder, this valve is progressively opened, when valve disc reaches the limit of position, this valve is fully opened, along with the difference of present position when valve disc is opened during this, the flow respective change of medium, this valve has throttling function; When shift fork presses down valve disc to valve body sealing surface by the valve disc back side, this valve is closed; And when shift fork is in position between opening and closing, shift fork loses the constraint to valve disc, now this valve has check function again, and MEDIA FLOW can only flow along a certain fixed-direction.So this valve has the function of unlatching, closedown, non-return, throttling, achieve multi-purpose valve, be widely used in the medium pipelines such as seawater, fresh water, oils, gas.And conventional with end compared with the valve of check function with other, the open degree of its valve is stable, reliably, stability of flow, using effect is better.

Problem is in said structure; the interstage bushing that implementation moves axially is to be threadedly connected on valve body; in actual use; the connecting thread position wearing and tearing that this realization moves axially are comparatively serious, and the major failure position of this valve often, because this trouble location relates to valve body; so scrapping of whole valve can be caused; and need to shut down replacing, inconvenient maintenance, brings further loss.

Model utility content

For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide a kind of multi-functional valve, and it can not only have the function of unlatching, closedown, non-return, throttling, and valve opening degree is reliable and stable, maintaining is simultaneously convenient, long service life.

In order to solve the problems of the technologies described above, a kind of multi-functional valve of the present utility model, comprise valve body, be loaded on valve body bonnet and the valve rod through valve gap, described valve gap is connected by thread seal with between valve body, between valve gap and valve body, be provided with check plate; Described valve gap has been threaded connection interstage bushing, and the joint tongue of valve rod passes the mortise of interstage bushing; Be provided with valve disc actively in the lower end of valve rod, the position of this valve disc is corresponding with the sealing surface position on valve body; Described interstage bushing lower end is provided with shift fork, and this shift fork is pitched the fork inserting in valve disc actively and inserted on neck; By spring seat, stage clip is installed between valve rod and valve disc.

In said structure, because described valve gap is connected by thread seal with between valve body, between valve gap and valve body, check plate is installed, then valve gap and valve body form the connecting body of a rigidity, check plate ensure that can not produce between valve gap and valve body loosening, and installation and removal can be carried out by screw thread between valve gap and valve body, the maintenance operation of the component such as valve disc in valve body can be facilitated; Again owing to being threaded connection interstage bushing on described valve gap, the joint tongue of valve rod passes the mortise of interstage bushing; Be provided with valve disc actively in the lower end of valve rod, the position of this valve disc is corresponding with the sealing surface position on valve body; Described interstage bushing lower end is provided with shift fork, and this shift fork is pitched the fork inserting in valve disc actively and inserted on neck; Then by hand wheel rotating valve rod, the interstage bushing be threaded connection on valve gap just can be made to realize moving axially, and the shift fork that interstage bushing lower end is arranged is pitched the fork inserting in valve disc actively and inserted on neck, this activity fork is plugged in the fork that shift fork can be formed between the valve disc back side and its convex shoulder and is inserted on neck span and move axially.When shift fork upwards drives valve disc by valve disc convex shoulder, this valve is progressively opened, and when valve disc reaches the limit of position, this valve is fully opened, and along with the difference of open degree when valve disc is opened during this, the flow respective change of medium, makes valve have throttling function, when shift fork presses down valve disc to valve body sealing surface by the valve disc back side, valve is closed, and when shift fork is in position between opening and closing, shift fork loses the constraint to valve disc, now this valve has again the function of safety check, flowing medium can only flow above the valve disc of direction from valve disc, so this valve has stable unlatching, close, non-return, the function of throttling, achieve multi-purpose valve, and because interstage bushing is threaded connection on valve gap, even if likely cause the connecting thread between interstage bushing and valve gap to damage because of frequent opening/shutting valve, its maintenance is also very convenient, only need dismantle valve gap can carry out, and do not need to change whole valve, thus extend the working life of whole valve.Also owing to being provided with stage clip by spring seat between valve rod and valve disc, then by stability that the elastic force of stage clip can keep valve gap to open, when shift fork is in the check function position between opening and closing, because the open degree of now valve disc is limited, the elastic force of stage clip not yet reaches working pressure, and the flowing medium below valve disc can back down valve disc by means of pressure and flow above valve disc; When shift fork reaches opening state and above position, the elastic force of stage clip has reached set working pressure, now valve disc top is pressed on shift fork by stage clip, valve disc continues to open by the elastic force that fluid medium pressure now can not continue upwards to overcome stage clip, and due to the effect of stage clip, the open degree of valve disc only depends on the position of shift fork, and valve disc open degree is larger, stage clip is also larger to the pressure on top surface of valve disc, and the position of valve disc is also more stable, and the throttling control effects of valve is also better.

A kind of preferred implementation of the present utility model, the upper end of described stage clip is bearing on valve rod, and spring socket sleeve to be connected on valve rod and between valve disc and stage clip.Adopt this mode of execution, the impact of valve rod rotation on stage clip working state can be avoided, make its work more stable.

Another kind of preferred implementation of the present utility model, described handwheel is by end-tooth and indicator bush end face joggle, and indicator lining is by mortise and valve rod joggle.Adopt this mode of execution, can make between handwheel with valve rod, to adopt simple circular hole to be connected, facilitate the processing of handwheel.

Another preferred implementation of the present utility model, described indicator excircle of bushing is threaded with indicator, and indicator is connected by axial groove and the projection card on valve gap are slotting.Adopt this mode of execution, indicator lining rotates with valve rod, and indicator moves up and down with the rotation of indicator lining, with reference to the projection on valve gap, intuitively and exactly can reflect the working position of valve disc.

The further preferred implementation of the utility model, adopt conical surface seal between the sealing surface on described valve disc and valve body, adopt this mode of execution, the sealing effect between valve disc with valve body is relative better.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model multi-functional valve is further detailed.

Fig. 1 is the structural representation of a kind of embodiment of the utility model multi-functional valve.

In figure: 1-valve body, 2-valve disc, 3-spring seat, 4-interstage bushing, 5-valve rod, 6-stage clip, 7-joint tongue, 8-valve gap, 9-indicator, 10-indicator lining, 11-handwheel, 12-end-tooth, 13-projection, 14-check plate, 15-fork inserts neck, 16-shift fork, 17-sealing surface.

Embodiment

In the multi-functional valve shown in Fig. 1, liquid entering hole on valve body 1 and liquid outlet are at right angles arranged, liquid entering hole is positioned at valve body bottom, liquid outlet is positioned at valve body side, valve body 1 upper end is connected with valve gap 8 by thread seal, is provided with check plate 14 between valve gap 8 and valve body 1, and check plate 14 side and valve gap 8 connect and fix, opposite side is screwed with valve body 1 and is connected, and cannot produce loosening after making to be connected between valve gap 8 with valve body 1; Valve rod 5 is also connected with rotatable sealing valve gap 8 through valve gap 8, valve gap 8 is threaded connection interstage bushing 4, mortise is had inside interstage bushing 4, joint tongue 7 on valve rod 5 is connected with its mortise movably through interstage bushing 4, interstage bushing 4 rotates under the drive of valve rod 5, and between itself and valve gap 8 connecting thread effect under move axially along valve rod 5; In the lower end of valve rod 5, valve disc 2 is installed actively, valve disc 2 is socketed in valve rod 5 lower end, and axially can move up and down along valve rod 5, the position of this valve disc 2 is corresponding with sealing surface 17 position on valve body 1, adopt conical surface seal between sealing surface 17 on valve disc 2 and valve body 1, sealing surface 17 is the conical surface corresponding with the sealing cone on valve disc 2; Interstage bushing 4 lower end is provided with shift fork 16, and this shift fork 16 is pitched the fork inserting in valve disc 2 actively and inserted on neck 15; This fork is inserted neck 15 and is positioned at valve disc 2 back side, the upper end that neck 15 inserted by fork is provided with convex shoulder, the thickness order that distance between convex shoulder and valve disc 2 back side is greater than fork 16 is pitched 16 and is moved downward when being pressed in valve disc 2 back side, sealing surface 17 on the sealing cone of valve disc 2 and valve body 1 is fitted, fork 16 moves upward and arrives fork when inserting the convex shoulder of neck 15 upper end, valve disc 2 can be freely up and down movable, when fork 16 continues to move upward, valve disc 2 moves upward thereupon, sealing cone on valve disc 2 and produce gap between sealing surface 17, its gap is greater than the distance depending on that fork 16 moves upward; Between valve rod 5 and valve disc 2, by spring seat 3, stage clip 6 is installed, the upper end of stage clip 6 is bearing on joint tongue 7 lower end surface of valve rod 5, spring seat 3 to be socketed on valve rod 5 and between valve disc 2 and stage clip 6, the active force of stage clip 6 is delivered on valve disc 2 by spring seat 3, makes the movement tendency that valve disc 2 keeps down.

The overhanging end of valve rod 5 is installed with handwheel 11, handwheel 11 is by end-tooth 12 and indicator lining 10 end face joggle, indicator lining 10 is by mortise and valve rod 5 joggle, when rotating handwheel 11, handwheel 11 drives indicator lining 10 to rotate by end-tooth 12 like this, and then by the joint tongue between indicator lining 10 and valve rod 5, valve rod 5 is rotated, be threaded connection axial restraint between handwheel 11 and valve rod 5.Described indicator lining 10 cylindrical is threaded with indicator 9, and indicator 9 blocks to insert by axial groove and the projection 13 on valve gap 8 and is connected.When indicator lining 10 rotates with handwheel 11, indicator 9 moves vertically under the circumferential position-limiting action of projection 13, and relative position axial between itself and projection 13 reflects the working position at valve disc 2.

In working procedure, when rotating handwheel 11, valve rod 5 rotates and drives interstage bushing 4 to move downward, and Shi get order fork 16 moves downward and is pressed in valve disc 2 back side and drives valve disc 2 to move downward, until the sealing surface 17 on the sealing cone of valve disc 2 and valve body 1 is fitted, valve is closed, when rotate backward handwheel 11 make fork 16 move upward arrive fork insert neck 15 upper end convex shoulder process in, the elastic force of stage clip 6 not yet reaches working pressure, valve disc 2 can be freely up and down movable under the effect of valve liquid entering hole medium pressure liquid, when pressure is large, valve is opened, pressure hour valve valve disc 2 conduct oneself with dignity and stage clip 6 active force under be closed, valve works the function making safety check, and the height and position of Ci Shi order fork 16 determines the maximum open degree of valve disc 2, whereby can the flow of regulating valve, and when continuing to move upward after fork 16 moves upward the convex shoulder position arriving slotting neck 15 upper end of fork, valve disc 2 moves upward thereupon, sealing cone on valve disc 2 and produce gap between sealing surface 17, its gap length depends on the distance that fork 16 moves upward, valve is in open mode, and its flow can regulate the position residing for fork 16, now stage clip 6 reaches working position, its elastic force makes valve disc 2 top be pressed on shift fork 16, valve disc 2 continues to open by the elastic force that fluid medium pressure now can not continue upwards to overcome stage clip 6, now valve has the function of adjust flux equally, thus achieve closedown, non-return, the function of unlatching and throttling.

Below preferred implementations more of the present utility model are only listed, but the utility model is not limited in this, more improvement and conversion can also be made, as described in valve body 1 structure that left and right also can be adopted straight-through, its liquid entering hole and liquid outlet are in the left and right sides of valve respectively; Described handwheel 11 also can not adopt end-tooth 12 to be connected with indicator lining 10, but is directly fixedly connected with the mode of valve rod 5 by flat key or joggle.And so on, as long as improvement done on the basis of the utility model basic principle and conversion, all should be considered as falling in protection domain of the present utility model.

Claims (3)

1. a multi-functional valve, comprise valve body (1), be loaded on the valve gap (8) on valve body (1) and the valve rod (5) through valve gap (8), it is characterized in that: be connected by thread seal between described valve gap (8) with valve body (1), check plate (14) is installed between valve gap (8) and valve body (1); Described valve gap (8) has been threaded connection interstage bushing (4), and the joint tongue (7) of valve rod (5) is through the mortise of interstage bushing (4); Be provided with valve disc (2) actively in the lower end of valve rod (5), the position of this valve disc (2) is corresponding with sealing surface (17) position on valve body (1); Described interstage bushing (4) lower end is provided with shift fork (16), and this shift fork (16) is pitched the fork inserting in valve disc (2) actively and inserted on neck (15); By spring seat (3), stage clip (6) is installed between valve rod (5) and valve disc (2).

2. multi-functional valve according to claim 1, is characterized in that: the upper end of described stage clip (6) is bearing on valve rod (5), and spring seat (3) is socketed in valve rod (5) and goes up and be positioned between valve disc (2) and stage clip (6).

3. multi-functional valve according to claim 1, is characterized in that: adopt conical surface seal between the sealing surface (17) on described valve disc (2) and valve body (1).