CN2556442Y

CN2556442Y - Pressure stabilizing constant-flow valve device

Info

Publication number: CN2556442Y
Application number: CN 02243597
Authority: CN
Inventors: 王从海
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-29
Filing date: 2002-07-29
Publication date: 2003-06-18
Anticipated expiration: 2012-07-29

Abstract

The utility model belongs to a voltage regulation steady flow valve device and consists of a valve, a valve rod and a valve body. The device is characterized in that the valve is provided with a triangular channel or the valve body adopts a mazy pipeline and the valve is a V-shaped valve, and a valve cover or the upper end of the valve rod is provided with a flow rate locking device or a staff or the flow rate locking device and the staff. In the using process, the valve provided by the utility model can stabilize system pressure and as the valve is provided with the triangular channel or the valve body adopts mazy pipeline and the valve is the V-shaped valve, variety value of flow rate is steadily increased or reduced with linearity in the using and regulating process, with stable output, stability and well-distributed property; the utility model can effectively protect and extend the service life of the device as well as has the advantages of simple structure, low cost and convenient use.

Description

Voltage stabilizing constant current valving

Technical field

The utility model belongs to a kind of voltage stabilizing constant current valving.

Background technique

Valves such as the gate valve that uses on the present pipeline, stop valve, ball valve, in use bear its sealing blocks effect remarkablely usually, and bears simple regulating action simultaneously.But because the restriction of valve self structure features such as gate valve, stop valve, ball valve, it does not have the effect of regulating flow, if with it flow is regulated by force by force, thing must produce the fluid whistle, flashboard, valve plate bump valve body, the valve rod of valve, flap, flashboard, spheroid will suffer damage, and regulate instability of flow, effect is bad, and causes danger easily.

The valve rod of common valve adopts T type worm structure usually, and the valve rod lifting is fast, and the valve rod rotation is generally 8～15 circles.The flow of medium from 0 to maximum value.Do not need the flow (being maximum value) of upstream and the situation of pipeline often is the technology flow of valve downstream, be generally 1/3～1/2 of upstream flow value.The decision of the structural feature of common valve, it can not be satisfied with stably flow is regulated.And on process pipe, all change regulating valve, expense will increase widely, the cost of expanding investment.

Valve is on pipeline in the using process, because under the effect of the variation of pressure medium, flow, promptly be subjected to the influence of switching manipulation, valve on the pipeline is through the work under the vibrational state of being everlasting, valve rod and flap, the position of flashboard and spheroid will be subjected to influences and changes, thereby causes the instability of valve export flow.The staff certainly will adjust repeatedly, promptly time-consumingly causes downstream piping flow disorder again, and influence is produced.

Summary of the invention

The purpose of this utility model provides a kind of voltage stabilizing constant current valving, makes valve in use have stable yarn system pressure, can intuitively show the effect of regulating flow and locking flow.For this reason, the utility model adopts: valve is provided with triangular duct, or valve body to adopt its valve of mazy type pipeline be the V-arrangement valve, on valve gap, or the valve rod upper end is provided with the flow locking device, or scale, or flow locking device and scale.The said structure design has realized the purpose of this utility model.

The utility model has the advantages that valve in use has stable yarn system pressure, valve is provided with triangular duct, or valve body to adopt its valve of mazy type pipeline be that the changing value of V-arrangement valve flow in using adjustment process is linear increment or reduction, stable output, steadily evenly.And can intuitively show the effect of regulating flow and locking flow.Install rapidly, can effectively protect and prolong service life of equipment, and also have simple in structurely, cost is low, advantage easy to use.

Description of drawings

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

Fig. 2 is a mazy type valve body structure schematic representation of the present utility model

Fig. 3 is a gate valve type valve mechanism schematic representation of the present utility model

Fig. 4 is a ball valve structural representation of the present utility model

Embodiment

As shown in figures 1 and 3, a kind of voltage stabilizing constant current valving, formed by valve 13, valve rod 11 and valve body 14, when this device uses on the gate valve type valve, the gate valve type valve is provided with triangular duct 23 as shown in Figure 3, this valve is divided into two-part, and top is valve seal portion 22, and its underpart is a triangular duct.The pipeline valve that the gate valve type valve base crouches in valve body is sat in 12.During use, when valve seal portion was positioned between the pipeline of valve body, valve body was closed.Valve body is opened when between the pipeline of triangular duct in valve body.Valve valve both sides in the switching process contact all the time with valve seat, have avoided the variation of rate-of flow and pressure and cause the phenomenon of valve bump valve body, triangular duct to make that flow value is linear smooth change in the valve opening process.

Other structure of the utility model, the valve rod 11 that promptly is coupling on the valve is established seal ring 10 between valve body gland 9 and the valve body, Gland 7 is pushed down filler 8 sealed valve stem peripheries, valve gap 6, Stem Mut 5 and gland 4 and handle 3 are established in the valve rod upper end, and be all identical with conventional construction, so be not repeated.The utility model is on valve gap, or valve rod upper end is provided with flow locking device 2, or scale 1, or flow locking device and scale.Described scale is the scale label that is engraved on the valve rod, or is positioned at the scale on the valve gap on valve rod limit.Valve rod is in the drive valve moves up and down opening process, stretches between the fixed valve gap in valve body upper end in its upper end, and therefore at valve rod upper end calibrate, the amount of the being earnest with the valve gap just can conveniently show the valve opening and closing amount.Certainly bidding chi on the valve gap that is positioned at the valve rod limit is established pointer on the valve rod, and its effect is identical.

As shown in Figure 2, be mazy type valve body structure schematic representation of the present utility model, the import and export passage of described mazy type pipeline 25 is oblique, imports and exports the setting that interlaces.It is V-arrangement valve 24 that valve body adopts its valve of mazy type pipeline, the top of V-arrangement valve is valve seal portion 22 still, blocks upper end mazy type conduit entrance and valve seat opening, and its lower end is shunk and V-shapedly also can be claimed open channel for open portion, valve rod drives when moving on the V-arrangement valve, and valve mazy type pipeline is opened.The valve rod set screw nut 15 of this mazy type valve body structure, packing ring 16, gland nut 19, valve gap bolt 20, set screw nut 21 are conventional construction, so be not repeated.Described flow locking device 2 is can fix to slide on valve rod, or the nut of valve gap upper end, or locking ring 18 and set screw 17.As mentioned above, valve rod is in the drive valve moves up and down opening process, stretches between the fixed valve gap in valve body upper end in its upper end.Therefore, at the fixedly locked ring of valve rod, control valve handle activity open amount can the control valve open amount.Obviously, establish nut, with lift adjustment valve gap and the lifting distance of valve rod, also the may command valve open amount of nut in the valve gap upper end.Scale can cooperate the flow locking device to use on a valve body.

As shown in Figure 4, be ball valve 26 structural representations of the present utility model, still being provided with triangular duct on the ball valve is open portion, and when the ball valve open portion forwards to when interlacing with conduit, valve body is closed, otherwise opens.Obviously the valve rod high scale can be along the valve rod circumferential distribution.

In a word; the utility model valve in use has stable yarn system pressure; valve is provided with triangular duct; or valve body to adopt its valve of mazy type pipeline be that the changing value of V-arrangement valve flow in using adjustment process is linear increment or reduction, stable output, steadily evenly; can effectively protect and prolong service life of equipment; and having simple in structurely, cost is low, advantage easy to use.

Claims

1, a kind of voltage stabilizing constant current valving, formed by valve, valve rod and valve body, it is characterized in that: valve is provided with triangular duct, or its valve of valve body employing mazy type pipeline is the V-arrangement valve, on valve gap, or be provided with the flow locking device on the valve rod, or scale, or flow locking device and scale.

2, by the described voltage stabilizing constant current of claim 1 valving, it is characterized in that: the import and export passage of described mazy type pipeline is oblique, imports and exports the setting that interlaces.

3, by the described voltage stabilizing constant current of claim 1 valving, it is characterized in that: described scale is the scale label that is engraved on the valve rod, or is positioned at the scale on the valve gap on valve rod limit.

4, by the described voltage stabilizing constant current of claim 1 valving, it is characterized in that: described flow locking device slides on valve rod for fixing, or the nut of valve gap upper end, or locking ring.