CN205371660U - Airtight valve - Google Patents

Abstract

The utility model discloses an airtight valve, its technical scheme main points are airtight valve, include the valve body, be used for closed valve valve plate physically, install the headstock gear that is used for opening or closing the valve plate on the valve body, valve plate and valve body looks adaptation, the perisporium fixedly connected with elasticity sealing washer of valve plate, set up on the inner wall of valve body with the recess of elasticity sealing washer looks adaptation, when the valve plate closure is on the valve body, the elasticity sealing washer stretch into form in the recess contradict sealed. The utility model discloses an airtight valve leakproofness is good.

Description

A kind of sealed valve

Technical field

This utility model relates to a kind of valve, more specifically, it relates to the sealed valve used in a kind of protection works.

Background technology

Sealed valve industry is the important branch in universal machine, and sealed valve is ingredient important in civil air defense constructions and installations, is mainly used in the cut-out of pipeline medium (water, gas and oil product etc.), throttling, pressure regulation and the change flow direction etc..The quality of sealed valve quality directly affects normal, safe handling and the safeguard function of these devices, and plays vital effect.Currently, the putting into operation of national, city's key project, it is necessary to substantial amounts of valve products is matched；The tightness of sealed valve is the important symbol of product quality, but the sealing structure that existing link-type sealed valve generally adopts is: the external diameter at valve plate is coated with sealing ring, when valve plate is closed, make between valve plate and valve body, to ensure good sealing by sealing ring, but the frequent opening and closing of sealed valve can cause and occur abrasion to cause that gap therebetween increases between valve plate and valve body, when abrasion reaches to a certain degree, pipeline medium (water, gas and oil product etc.) can leak from gap location.

nullIn prior art，If Authorization Notice No. is the Chinese patent of CN202381821U，Which describe a kind of link-type sealed valve，Including valve body、Valve plate and pitman shaft，On valve body, processing has two coaxial axis holes，Two axis holes of pitman shaft and valve body are slidably matched，Pitman shaft is fixed double link，Double link and valve plate connect，The outer radius cladding valve plate sealing ring of valve plate，The axostylus axostyle place cladding airtight circle of pitman shaft of the junction of two axis holes of pitman shaft and valve body，Structure is sealed by improving connecting rod shaft type sealed valve，The outer radius cladding valve plate sealing ring of valve plate again，The axostylus axostyle place cladding airtight circle of pitman shaft at pitman shaft with the junction of two axis holes of valve body，It is greatly improved sealing effectiveness，Improve the service life of valve，But the wear problem between valve plate and valve body is not still made improvement by the program，Abrasion between valve plate and valve body still can cause that gap becomes big，Sealing is deteriorated，Certainly also there are other improvement projects made for sealing，If Authorization Notice No. is the Chinese patent of CN202756636U，It increases its sealing by the paint of anticorrosion with painting on sealing ring and valve plate，But paint still can be worn，Sealing after abrasion still can be very poor，It is thus desirable to provide new technical scheme to solve this problem.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is in that to provide the sealed valve of a kind of good airproof performance.

For achieving the above object, this utility model provides following technical scheme: a kind of sealed valve, including valve body, for closing the valve plate of valve body, described valve body is provided with the headstock gear for opening or closing valve plate, valve plate is suitable with valve body, it is characterised in that: the perisporium of described valve plate is fixedly connected with elastic seal ring, and the inwall of described valve body offers the groove suitable with elastic seal ring, when valve plate closes on valve body, elastic seal ring puts in and forms sealing of conflicting in groove.

Pass through technique scheme, the perisporium of valve plate fixedly mounts elastic seal ring, the inwall of valve body is offered groove, so when valve plate turns to inconsistent with valve body by headstock gear, elastic seal ring can be conflicted in groove just, increase sealing by increase conflict area so on the one hand, the conflict power between valve plate and valve body can be made greatly to be increased on the other hand, thus the sealing that better ensure that between valve plate and valve body.

Further, the cross section of described elastic seal ring and groove is all arranged in circular arc.

By technique scheme, being respectively provided with by the cross section of elastic seal ring and groove in the arc-shaped is that the resistance being subject to diminishes, thus being easy to open valve plate in order to rotate valve plate from when opening valve body when needs.

Further, described elastic seal ring being additionally provided with spacing preiection, the inwall of described groove offers the depressed part suitable with spacing preiection.

Pass through technique scheme, arranging spacing preiection on elastic seal ring, spacing preiection can put in be formed in depressed part and conflict, so when valve plate is conflicted with valve body, spacing preiection can better increase sealing with coordinating of depressed part, simultaneously it can be avoided that elastic seal ring departs from groove.

Further, the end face of described elastic seal ring and the inwall of groove are all provided with being set to wavy.

By technique scheme, the synapsis that elastic seal ring and groove offseted is arranged to the wavy conflict area that can increase, and corrugated curve can better prevent the medium osmosis such as water, gas and oil product from coming in.

Further, described valve plate offers fixing groove, and described elastic seal ring is entrenched in fixing groove.

By technique scheme, elastic seal ring is entrenched in fixing groove and not only facilitates installation and the good stability connected, also convenient when needs are dismantled.

Further, the described T-shaped setting of fixing groove, the end of described elastic seal ring is suitable with fixing groove.

Pass through technique scheme, fixing groove is arranged to T-shaped, elastic seal ring is wanted to coordinate with it, the connective stability that can increase elastic seal ring further is so set, when needs are fitted in groove or depart from groove, elastic seal ring is subject to twisting force, and T-shaped connected mode can ensure that elastic seal ring will not depart from.

Further, described headstock gear has manual link structure.

By technique scheme, manual link architecture is simple, and easy to operate, cost is low.

Further, described headstock gear has electronic bar linkage structure.

By technique scheme, when electronic bar linkage structure opens and closes, ratio is relatively labor-saving and fast.

Further, described headstock gear has manual double link structure.

By technique scheme, manual double link structure structural strength is high, structural stability is good, and simple in construction cost is low.

Further, described headstock gear has electronic double link structure.

By technique scheme, electronic double link structure structural strength is high, good stability, and convenient operation, laborsaving.

Compared with prior art this utility model has an advantage that

One: coordinate the sealing ring that ensure that valve plate with valve body by elastic seal ring and groove, and by by elastic seal ring and groove be equipped with camber and end face has structure, it is further ensured that valve plate can be at a fully engaged with valve body, it is to avoid water, gas and oil product etc. penetrate；

Its two: by elastic seal ring is entrenched on valve plate, it is ensured that the connective stability of valve plate and elastic seal ring, it is prevented that elastic seal ring departs from valve plate because of stress, adds its service life.

Its three: this sealing structure is combined with the sealed valve with various structures, makes the sealed valve of various style all can have higher sealing and connective stability.

Accompanying drawing explanation

Fig. 1 is the structural representation of sealed valve；

Fig. 2 is the cross-sectional view of sealed valve；

Fig. 3 is the close-up schematic view of embodiment one；

Fig. 4 is the close-up schematic view of embodiment two.

In figure: 1, valve body；11, groove；2, headstock gear；3, valve plate；31, fixing groove；4, elastic seal ring；41, spacing preiection.

Detailed description of the invention

Below in conjunction with drawings and Examples, this utility model is described in detail.

Embodiment one: as shown in Figure 1, sealed valve is made up of valve body 1, valve plate 3 and headstock gear 2, valve plate is arranged in the latus rectum of valve body, and it is installed with headstock gear in the side of valve body, headstock gear 2 is fixing with valve plate 3 to be connected, valve plate 3 is made to rotate by the transmission of headstock gear 2, when the relative valve body 1 of valve plate 3 turns to 90 °, the latus rectum of valve body 1 is opened and can circulate, completely the latus rectum of valve body 1 is blocked with making valve plate 3 when valve plate 3 turns under the drive of headstock gear, now just close sealed valve.

nullThe perisporium of valve plate 3 is installed with elastic seal ring 4，Elastic seal ring 4 can adopt elastic rubber material，By bonding mode, elastic seal ring 4 can be fixedly mounted on the perisporium of valve plate 3，It was in elastic seal ring 4 at that time to be often squeezed when valve plate 3 opens and closes，It is susceptible to deformation，Therefore adopt on the perisporium of valve plate 3, offer fixing groove 31，Fixing groove 31 is arranged to T-shaped，As shown in Figures 2 and 3，The end of elastic seal ring 4 is also configured to T-shaped，Then elastic seal ring 4 is arranged in fixing groove 31 by the mode of crimp，Such elastic seal ring 4 can be tightened on valve plate 3，But elastic seal ring 4 deforms without departing from fixing groove 31 when depressed simultaneously，This ensures that there the connective stability of elastic seal ring 4，Simultaneously when elastic seal ring 4 changed by needs，Elastic seal ring 4 can be prized in fixing groove 31，It is replaced also very convenient.

nullMeanwhile，The inwall of valve body 1 is further opened with groove 11，Groove 11 encloses around the perisporium one of valve plate 3，And groove 11 is suitable with elastic seal ring 4，And it is all provided with being set to arc-shaped by the end surface shape of the shape of groove 11 and elastic seal ring 4，So when rotational valve plate 3 makes valve plate 3 inconsistent with the inwall of valve body 1，Elastic seal ring 4 can be conflicted just in groove 11，Thus can be greatly increased the sealing between valve plate 3 and valve body 1，And the setting of arc-shaped can make the elastic seal ring 4 on valve plate 3 be easier in pressed into groove 11，And the end face at elastic seal ring 4 is additionally provided with spacing preiection 41，Spacing preiection 41 also becomes arc-shaped to arrange，The inwall of groove 11 also offers the depressed part matched with spacing preiection 41，So when elastic seal ring 4 is conflicted in groove 11，Spacing preiection 41 can stretch in depressed part just，So can increase its sealing further，Because the airtight interface place in circular arc，When there being gas、Although gap is only small during liquid infiltration，But will not meet with obstruction，Of long duration still can be likely to occur infiltration，Add now spacing preiection 41 and change the path of arc surface，Such gas or liquid need to change infiltration direction in process of osmosis，Path is further increased simultaneously，Thus can improve its sealing very efficiently.

It should be noted that herein, do not limit the structure of headstock gear 2 herein, and the headstock gear 2 link-type sealed valve with manual link structure that can be only on market general, by pulling handle, valve plate is opened or closed, relatively simple for structure, cost is low；Can also adopting by the electronic link-type sealed valve of driven by motor, motor makes valve plate rotate by the power output of rotating shaft to open and close, and so setting is relatively laborsaving, and action is rapider；Headstock gear 2 can certainly be configured with the sealed valve of manual double link structure, and its concrete structure is referred to the Chinese patent that the patent No. is CN201475355U, and such structural strength is high, long service life；Same can also be arranged to headstock gear 2 by the sealed valve of the double link structure of driven by motor, and these above-mentioned headstock gear 2 structures are the basic structure commonly used in prior art, too much do not repeat herein.

Embodiment two: as shown in Figure 4, being different in that with embodiment one is arranged to wavy by the end face of elastic seal ring 4, the inwall of groove 11 is also configured to undaform suitable with it, so when elastic seal ring 4 is conflicted completely in groove 11, corrugated two end faces are conflicted together completely, which not only adds the conflict area of elastic seal ring 4 and groove 11, add sealing, the path in the gap between elastic seal ring 4 and groove 11 is irregular simultaneously, when gas or liquid permeate, need to penetrate into through relatively tortuous route direction, degree-of-difficulty factor is high, and the time is permanent, this makes it possible to the sealing being greatly improved between valve plate and valve body.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. a sealed valve, including valve body (1), for closing the valve plate (3) of valve body (1), described valve body (1) is provided with the headstock gear (2) for opening or closing valve plate (3), valve plate (3) is suitable with valve body (1), it is characterized in that: the perisporium of described valve plate (3) is fixedly connected with elastic seal ring (4), the inwall of described valve body (1) offers the groove (11) suitable with elastic seal ring (4), when valve plate (3) closes on valve body (1), elastic seal ring (4) puts in and forms sealing of conflicting in groove (11).

2. a kind of sealed valve according to claim 1, it is characterised in that: the cross section of described elastic seal ring (4) and groove (11) is all arranged in circular arc.

3. a kind of sealed valve according to claim 2, it is characterized in that: be additionally provided with spacing preiection (41) on described elastic seal ring (4), the inwall of described groove (11) offers the depressed part suitable with spacing preiection (41).

4. a kind of sealed valve according to claim 2, it is characterised in that: the end face of described elastic seal ring (4) and the inwall of groove (11) are all provided with being set to wavy.

5. a kind of sealed valve according to claim 1, it is characterised in that: described valve plate (3) offers fixing groove (31), and described elastic seal ring (4) is entrenched in fixing groove (31).

6. a kind of sealed valve according to claim 5, it is characterised in that: the T-shaped setting of described fixing groove (31), the end of described elastic seal ring (4) is suitable with fixing groove (31).

7. a kind of sealed valve according to claim 1 or 2 or 3 or 4 or 5 or 6, it is characterised in that: described headstock gear (2) has manual link structure.

8. a kind of sealed valve according to claim 1 or 2 or 3 or 4 or 5 or 6, it is characterised in that: described headstock gear (2) has electronic bar linkage structure.

9. a kind of sealed valve according to claim 1 or 2 or 3 or 4 or 5 or 6, it is characterised in that: described headstock gear (2) has manual double link structure.

10. a kind of sealed valve according to claim 1 or 2 or 3 or 4 or 5 or 6, it is characterised in that: described headstock gear (2) has electronic double link structure.