CN204628570U - Multi-layer sealed Multifunctional stop valve - Google Patents

Multi-layer sealed Multifunctional stop valve Download PDF

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Publication number
CN204628570U
CN204628570U CN201520053168.9U CN201520053168U CN204628570U CN 204628570 U CN204628570 U CN 204628570U CN 201520053168 U CN201520053168 U CN 201520053168U CN 204628570 U CN204628570 U CN 204628570U
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CN
China
Prior art keywords
valve
flap
stop valve
layer sealed
seated
Prior art date
Application number
CN201520053168.9U
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Chinese (zh)
Inventor
陈春景
Original Assignee
陈春景
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Filing date
Publication date
Application filed by 陈春景 filed Critical 陈春景
Priority to CN201520053168.9U priority Critical patent/CN204628570U/en
Application granted granted Critical
Publication of CN204628570U publication Critical patent/CN204628570U/en

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Abstract

The utility model relates to a kind of multi-layer sealed Multifunctional stop valve, comprise flap, valve body, described flap is seated on valve body, flap and valve body joint, flap and valve body arrange step structure respectively, the step structure of flap and the step structure adaptation of valve body, and flap is seated in after on valve body, the wherein side of flap and valve body has gap, described gap forms valve pocket, flap forms sealing surface with the step structure surface coordinated between valve body simultaneously, and the utility model can realize zero leakage.

Description

Multi-layer sealed Multifunctional stop valve

Technical field

The utility model relates to a kind of multi-layer sealed Multifunctional stop valve.

Background technique

Stop valve, also known as pipe valve valve, belongs to forced seal formula valve, so when valve closing, must apply pressure, do not leak with forced seal face to flap.When medium is by when entering valve below flap, the resistance overcome required for steering force, be the frictional force of valve rod and filler and the thrust produced by the pressure of medium, the power of the force rate valve opening door of closing valve is large, so the diameter of valve rod wants large, otherwise the fault of valve rod bending can be there is.Three kinds are divided into: Flange joint, screwed connection, to be welded to connect by Placement.After occurring from self-packing valve, the MEDIA FLOW of stop valve enters valve pocket to just changing by above flap, and at this moment under pressure medium effect, the power of closing valve is little, and the power of valve opening door is large, and the diameter of valve rod can correspondingly reduce.Meanwhile, under medium effect, the valve of this form is also tighter.China's valve " three changes are given " once specified, the flow direction of stop valve, adopted from top to bottom without exception.Stop valve open time, the Lift of flap, for nominal diameter 25% ~ 30% time. flow has reached maximum, represent valve reach fully open position.So the fully open position of stop valve, should be decided by the stroke of flap.But still there are some defects in existing stop valve, although be that requirement reaches zero leakage in NBS, but when normal use, zero leakage completely cannot be accomplished in most cases, and individual layer is sealed in and can easily causes contact surface abrasion and come off after long-time switch uses, medium is produced and pollutes, and can cause be affected working life.

The open-shut device of stop valve (stop valve, Globe Valve) is the flap of stopper, and in plane or the extra large conical surface above sealing, flap is along the center line moving linearly of valve seat.The forms of motion of valve rod, (adopted name: dark bar), also has lifting rotation rod-type to can be used for controlling the flowing of all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.Therefore, such stop valve valve that dams is suitable as and cuts off or regulate and throttling use very much.Valve rod due to such valve open or shutoff stroke relatively short, and there is cutting function very reliably, again due to the change of valve seat port and the stroke direct proportionality of flap, be very suitable for the adjustment to flow.

Model utility content

The problem that the object of the invention is the leakage in order to solve stop valve, secondary pollution and extend stop valve working life, promote the adjust flux function of stop valve, the technological scheme realizing above-mentioned purpose is as follows simultaneously:

Multi-layer sealed Multifunctional stop valve, comprise flap, valve body, described flap is seated on valve body, it is characterized in that: flap and valve body joint, flap and valve body arrange step structure respectively, the step structure of flap and the step structure adaptation of valve body, and flap is seated in after on valve body, the wherein side of flap and valve body has gap, and described gap forms valve pocket, and flap forms sealing surface with the step structure surface coordinated between valve body simultaneously.

Preferably, the bottom of described flap is conical.

The utility model can realize zero leakage.

Accompanying drawing explanation

Fig. 1 is flap mounting point schematic diagram in prior art

Fig. 2 is the utility model flap and valve body schematic diagram

Fig. 3 is the utility model flap and valve body schematic diagram

Figure number illustrates: flap 1, valve body 2, flap body 1-1, valve pocket 1-2

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in detail.

Fig. 1 is flap 1, valve body 2 is arranged on the schematic diagram on equipment, flap 1 is seated on valve body 2, flap 1 and valve body 2 joint, flap and valve body arrange step structure 3 respectively, step structure can be multi-stage stairs, the step structure of flap and the step structure adaptation of valve body, and flap is seated in after on valve body, the wherein side of flap and valve body has gap, described gap forms valve pocket 4, the bottom of stop valve is conical, the surface of the step structure agreed with between flap and valve body forms sealing surface, due to the particularity of step structure, therefore multi-layer sealed is defined between flap and valve body.

The maximum differential of the present invention and original technology has been multi-layer sealed, original stop valve utilizes flap 1 to contact with the extruding of valve body 2 to realize sealing (as shown in Figure 1), all can there be leakage, leakage rate and the linear increase of caliber size of trace in most cases.And the present invention is on the basis of original flap, do some variations, make the sealing configuration of the Contact forming station stepwise of flap 1 and valve body 2, the valve pocket 1-1 formed plays the effect of buffering, such medium is just only having a small amount of leakage by during first layer sealing surface, this medium leaked out on a small quantity only has the past lower floor seal leakage of less amount when reaching second layer sealing, so just greatly reduce the risk of leakage, really can reach the requirement of zero leakage, simultaneously owing to there being multi-layer sealed buffering, damage can not be caused easily to wherein some parts, its physical life can be extended, prevent from internal structure from damaging material to come off and to pollute medium.

While the multiple sealing of increase, make the bottom of flap into taper shape, taper shape can control medium flow by a certain percentage, so just proportionally can control the flow of pipeline medium, realizes function more accurately.

These are only the preferred embodiment of the utility model embodiment; not in order to limit the utility model embodiment; within all spirit in the utility model embodiment and principle; any amendment of doing, equivalent replacement, improvement etc., all should be included in the protection domain of the utility model embodiment.

Claims (2)

1. multi-layer sealed Multifunctional stop valve, comprise flap, valve body, described flap is seated on valve body, it is characterized in that: flap and valve body joint, flap and valve body arrange step structure respectively, the step structure of flap and the step structure adaptation of valve body, and flap is seated in after on valve body, the wherein side of flap and valve body has gap, and described gap forms valve pocket, and flap forms sealing surface with the step structure surface coordinated between valve body simultaneously.
2. multi-layer sealed Multifunctional stop valve according to claim 1, is characterized in that: the bottom of described flap is for conical.
CN201520053168.9U 2015-01-27 2015-01-27 Multi-layer sealed Multifunctional stop valve CN204628570U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520053168.9U CN204628570U (en) 2015-01-27 2015-01-27 Multi-layer sealed Multifunctional stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520053168.9U CN204628570U (en) 2015-01-27 2015-01-27 Multi-layer sealed Multifunctional stop valve

Publications (1)

Publication Number Publication Date
CN204628570U true CN204628570U (en) 2015-09-09

Family

ID=54047603

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520053168.9U CN204628570U (en) 2015-01-27 2015-01-27 Multi-layer sealed Multifunctional stop valve

Country Status (1)

Country Link
CN (1) CN204628570U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105587327A (en) * 2016-01-25 2016-05-18 巨隆集团芜湖兴隆液压有限公司 Valve core assembly of safety valve
CN105626119A (en) * 2016-01-25 2016-06-01 巨隆集团芜湖兴隆液压有限公司 Switching mechanism of overflow safety valve
CN105626118A (en) * 2016-01-25 2016-06-01 巨隆集团芜湖兴隆液压有限公司 Valve core assembly of mass-flow overflow safety valve
CN105715285A (en) * 2016-01-25 2016-06-29 巨隆集团芜湖兴隆液压有限公司 Valve element assembly of overflow safety valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105587327A (en) * 2016-01-25 2016-05-18 巨隆集团芜湖兴隆液压有限公司 Valve core assembly of safety valve
CN105626119A (en) * 2016-01-25 2016-06-01 巨隆集团芜湖兴隆液压有限公司 Switching mechanism of overflow safety valve
CN105626118A (en) * 2016-01-25 2016-06-01 巨隆集团芜湖兴隆液压有限公司 Valve core assembly of mass-flow overflow safety valve
CN105715285A (en) * 2016-01-25 2016-06-29 巨隆集团芜湖兴隆液压有限公司 Valve element assembly of overflow safety valve

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