CN102563105A

CN102563105A - Downward opening type flat gate valve

Info

Publication number: CN102563105A
Application number: CN2011104367020A
Authority: CN
Inventors: 肖江东; 徐志斌
Original assignee: SHANGHAI NUOTEFEIBO COMBUSTION EQUIPMENT CO Ltd
Current assignee: SHANGHAI NUOTEFEIBO COMBUSTION EQUIPMENT CO Ltd
Priority date: 2011-12-23
Filing date: 2011-12-23
Publication date: 2012-07-11

Abstract

The invention belongs to the technical field of safety valves, relates to a downward opening type quick flat gate valve in gas and fuel oil delivery process, and is characterized in that a valve rod channel is arranged above the vertical direction of the valve body middle and a fluid channel, and a base groove is arranged under the vertical direction. A valve core consists of the valve rod and a gate plate with a through hole, the valve rod and the gate plate are connected integrally and vertically, and the valve rod is driven by a control signal to vertically move in the valve rod channel. The downward opening type flat gate valve has the advantages that the structure is simple, valve core fixing rings are respectively arranged on two sides of the gate plate, a good sealing measure is adopted between the gate plate and the valve core fixing rings and between the valve core fixing rings and a valve body, the base groove of the valve body is always an airtight cavity and no impurity falls into the cavity when the whole valve is opened or closed, accordingly when the valve is opened or closed, the valve core moves vertically, rapidly and conveniently, the resistance is small and is not clamped, and the service life is long. When the valve is opened, a fluid channel through hole of the valve core coincides with the shape and size of the fluid channel of the valve body, the fluid channel is unobstructed, and the resistance is small.

Description

A kind of bottom-open type plate valve

Technical field

The present invention relates to the safety valve in the gas fuel course of conveying, relate in particular to the quick plate valve of a kind of bottom-open type, belong to the safety valve technical field.

Background technique

Valve is the important accessory on the fluid line, and particularly in some security fields, valve not only plays a part the control fluid, the more important thing is to play and when urgency, cuts off fluid, avoids the safety effect of accident.Since 19th century control valve be applied in steamer, control valve has developed into the industry that global annual value of production is about 20,000,000,000 dollars so far, and along with global industrialized development, is keeping stable growth.Safety valve also is quick valve, is extremely important a kind of in the control valve.The time that safety valve requires to cut out or to open is short as far as possible, but control valve technology, technology and safety reliability require highly safely and fast, and domestic also do not have a specialized manufacturing enterprise.

Valve in use because fluid and not exclusively clean accumulates the solid particulate matter in some fluids easily in the valve body runner, when valve closing, causes the spool lower end to be pressed on the particulate matter fast, makes spool not close tight, causes valve leak; Quick valve defectives such as also to exist noise big, and weight is big, and is stifled easily, and it is big wear and tear in addition, the characteristic after the characteristic when dispatching from the factory and operation a period of time often has very big difference, like the leakage rate increase etc., brings difficulty for steady in a long-term the operation.Leak the waste not only cause material or product, and atmosphere environment is polluted, sometimes, also can cause personnel's accidents such as injures and deaths or equipment explosion.Causing this phenomenon except the processing technology defective, outside material does not pass a test, mainly is the valve mechanism design problem.

Summary of the invention

The objective of the invention is: avoid present similar valve to be prone to block up, to open defectives such as resistance is big, easy to wear, the life-span is short, provide a kind of simple in structure, runner is unobstructed, a kind of bottom-open type plate valve that speed of response is fast.

For achieving the above object, the technological scheme of taking is: a kind of bottom-open type plate valve, comprise valve body, spool, and it is characterized in that: said valve body middle part is equipped with valve stem passage with the top of fluid passage Vertical direction, and the below is equipped with kerve; Said spool is made up of valve rod and the flashboard that has through hole; Said valve rod places in the valve stem passage of said valve body; The lower end of said flashboard places in the kerve of said valve body, and said valve rod and flashboard fuse up and down, and valve rod is accepted the control signal driving and in valve stem passage, moved up and down.

The both sides of said flashboard are equipped with the spool retainer ring respectively, are equipped with valve core seal ring between flashboard and the spool retainer ring, adopt metallic mirror surface sealing or nonmetal sealing; Between spool retainer ring and the valve body, and be equipped with the O RunddichtringO between valve rod and the valve body, adopt the sealing of O RunddichtringO.

The runner through hole that the first half of said flashboard is equipped with, the cross section, fluid passage of the shape of through hole and sectional area and valve body coincide consistent, and the Lower Half of flashboard is a flat board.

Good effect of the present invention is: simple in structure, the both sides of flashboard are equipped with the spool retainer ring respectively, between flashboard and the spool retainer ring; And all adopt good seal approach between spool retainer ring and the valve body, when whole valve open was perhaps closed, the valve body kerve was a closed chamber; Do not have any impurity and fall into wherein, thus valve open or when closing, spool can not be stuck; The little rapid convenience of up and down resistance, long service life, line service amount are few; During valve open, the runner through hole of spool is identical consistent with the shape of valve body runner size, and the unobstructed resistance of runner is little.

Description of drawings

Below in conjunction with description of drawings and embodiment the present invention is described further.

Fig. 1 is the valve body structural representation;

Fig. 2 is the valve core structure schematic representation;

Fig. 3 is that the A of Fig. 2 is to structural representation;

Fig. 4 opens a status architecture schematic representation for the present invention;

Fig. 5 is an off-position status architecture schematic representation of the present invention;

Fig. 6 is the local structure for amplifying schematic representation in the I position of Fig. 4.

Among the figure, the 1-valve body; The 2-valve stem passage; The 3-kerve; The 4-valve rod; The 5-through hole; The 6-flashboard; 7-spool retainer ring; The 8-valve core seal ring; The 9-O RunddichtringO.

Embodiment

Fig. 1 is a kind of bottom-open type plate valve valve body structural representation, and diagram valve body 1 left side is a fluid input, and the top of said valve body 1 middle part and fluid passage Vertical direction is equipped with valve stem passage 2, and the below is equipped with kerve 3; Visible by Fig. 2 and Fig. 3 valve core structure figure, said spool is made up of valve rod 4 and the flashboard 6 that has through hole 5; Spool and valve body are assembled into open and close position, whole back state and are shown in Fig. 4 and Fig. 5; Said valve rod 4 places in the valve stem passage 2 of said valve body 1; The lower end of said flashboard 6 places in the kerve 3 of said valve body 1; Said valve rod 4 fuses up and down with flashboard 6, and valve rod 4 can be accepted control signal and drive and in valve stem passage 2, move up and down.

The both sides of said flashboard 6 are equipped with spool retainer ring 7 respectively, and are equipped with valve core seal ring 8 between flashboard 6 and the spool retainer ring 7, between spool retainer ring 7 and the valve body 1, and are equipped with O RunddichtringO 9 between valve rod and the valve body 1, adopt 9 sealings of O RunddichtringO.

Said valve core seal ring 8 can adopt metal or nonmetallic material, with flashboard 6 sealings;

Through hole 5 shapes that said flashboard 6 has are identical consistent with the cross section, fluid passage of sectional area and valve body 1,

The fluid through-hole 5 that the first half of said flashboard 6 is equipped with, the Lower Half of flashboard are dull and stereotyped.

Fig. 4 and Fig. 5 are respectively the present invention and open a state and closed condition structural representation.During work, valve rod 4 is accepted control signal and is driven, and along moving up and down in the valve stem passage 2.Open a state valve rod 4 and drive down motion by control signal; The through hole 5 of flashboard 6 upper ends is connected with the valve body runner, and valve core through hole 5 shapes are identical consistent with the cross section, fluid passage of valve body 1, and area is not less than the valve body fluid passage; So fluid promptly can pass through resistance little (Fig. 4) unblockedly.

Throttle down, valve as shown in Figure 5 is in off-position, and flashboard 6 bottoms and valve body kerve 3 have certain distance, and flashboard through hole 5 is in the upper end of valve body 1, and promptly the fluid passage of valve body 1 is blocked by flashboard 6 lower ends, and fluid can not pass through from the through hole 5 of flashboard 6 upper ends.

Flashboard 6 both sides contact with spool retainer ring 7 respectively; And by the valve core seal ring 8 minute surfaces sealing that places in spool retainer ring 7 grooves, so whole valve open or when closing, it is a closed chamber that valve body kerve 3. valve body kerves 3 are not left in the bottom of flashboard 6; Not having any impurity falls into wherein; Thereby also can not cause spool to be stuck, resistance was little, easy to use when spool was movable; During valve open, through hole 5 runners of spool are almost consistent with valve body flow channel shape size, and runner is unobstructed, and fluid resistance is little, long service life.

Claims

1. a bottom-open type plate valve comprises valve body, spool, it is characterized in that: said valve body middle part is equipped with valve stem passage with the top of fluid passage Vertical direction, and the below is equipped with kerve; Said spool is made up of valve rod and the flashboard that has through hole; Said valve rod places in the valve stem passage of said valve body; The lower end of said flashboard places in the kerve of said valve body, and said valve rod and flashboard fuse up and down, and valve rod is accepted the control signal driving and in valve stem passage, moved up and down.

2. according to the said a kind of bottom-open type plate valve of claim 1, it is characterized in that: the both sides of said flashboard, be equipped with the spool retainer ring respectively, be equipped with valve core seal ring between flashboard and the spool retainer ring, adopt metallic mirror surface sealing or nonmetal sealing; Between spool retainer ring and the valve body, and be equipped with the O RunddichtringO between valve rod and the valve body, adopt the sealing of O RunddichtringO.

3. according to the said a kind of bottom-open type plate valve of claim 1, it is characterized in that: the runner through hole that the first half of said flashboard is equipped with, the cross section, fluid passage of the shape of through hole and sectional area and valve body coincide consistent, and the Lower Half of flashboard is a flat board.