CN206918268U - Fluorine lining butterfly valve - Google Patents

Abstract

A kind of fluorine lining butterfly valve.Solves existing butterfly plate processing trouble, the problem of easily leakage.It includes upper valve body, lower valve body and butterfly plate, described upper valve body and lower valve body is detachably connected, described upper valve body, integral type Fluorine-lined set is arranged with outside lower valve body, described Fluorine-lined is put provided with the medium channel passed through for medium, described butterfly plate is in medium channel and for controlling medium channel open or close, described upper valve body is provided with connecting shaft, described connecting shaft one end is connected with operating parts, the other end is detachably connected through Fluorine-lined set with butterfly plate, described butterfly plate is provided with rotating shaft, described rotating shaft is inserted in lower valve body through Fluorine-lined set, storage tank is provided with described lower valve body, seal and elastic component are provided with described storage tank, described elastic component has movement tendency of the driving seal close to rotating shaft.The advantages that the utility model also has simple in construction, easy to assembly, reliable in action, and service life is long.

Description

Fluorine lining butterfly valve

Technical field

It the utility model is related to a kind of valve, and in particular to a kind of fluorine lining butterfly valve.

Background technology

Butterfly valve is called flap valve, is a kind of regulating valve simple in construction, and the switch available for low pressure pipeline medium controls.Butterfly Valve refers to closure member flap or butterfly plate is disk, and a kind of valve of open and close is reached around valve shaft rotation, and valve can be used for Control all kinds fluids such as empty gas and water, steam, various Korrosionsmediums, mud, oil product, liquid metal and radiating medium Flowing, it is main on pipeline to play cut-out and throttling action.It is rotten in conveyings such as weight chemical industry, large chemical fertilizer, petroleum and petrochemical industry, smelting iron and steels The occasion of corrosion fluid media (medium), metal valve is because can be corroded, it is clear that can not use, therefore in this kind of occasion, generally need Use corrosion-resistant plastic lining valve.Existing Butterfly valve with liner causes at body base due to sealing corrosion barrier Product hermeticity can be poor, and existing common practice is to increase a sealing shroud or seal, but the seal due to Angle and reasons in structure are set so that axially（Refer to the axial direction of butterfly valve rotating shaft, similarly hereinafter）It is not high with radial pressure, so that Product sealing is unreliable, and life test can only be to 10,000 times or so, and product will have leakage, and product service life is short；And Butterfly plate generally sets rotating shaft in process and assemble, for the ease of rotating, if rotating shaft and butterfly plate are integral type structure, then butterfly plate turns When dynamic, rotating shaft easily twists off, and installs trouble；If rotating shaft and butterfly plate are split-type structural, butterfly plate Excircle machining and rotating shaft Axiality cannot be guaranteed, and easily leakage.

The content of the invention

To solve existing butterfly plate processing trouble in background technology, the problem of easily leakage, the utility model provides a kind of lining Fluorine butterfly valve.

The technical solution of the utility model is：A kind of fluorine lining butterfly valve, including upper valve body, lower valve body and butterfly plate, described is upper Valve body and lower valve body are detachably connected, and are arranged with integral type Fluorine-lined set outside described upper valve body, lower valve body, described Fluorine-lined is put Provided with the medium channel passed through for medium, described butterfly plate is in medium channel and for controlling medium channel to open or close Close, described upper valve body is provided with connecting shaft, and described connecting shaft one end is connected with operating parts, the other end covered through Fluorine-lined and Butterfly plate is detachably connected, and described butterfly plate is provided with rotating shaft, and described rotating shaft is inserted in lower valve body through Fluorine-lined set, described Storage tank is provided with lower valve body, seal and elastic component are provided with described storage tank, there is described elastic component driving to seal Movement tendency of the part close to rotating shaft.

As a kind of improvement of the present utility model, deep-slotted chip breaker, described arc are equipped with described upper valve body and lower valve body Anti-corrosion layer is provided with shape groove.

As further improvement of the utility model, described upper valve body and lower valve body cave inward to be formed for corrosion resistant Lose the deep-slotted chip breaker of layer installation.

As further improvement of the utility model, described connecting shaft is integrally machined using hardening stainless steel and formed.

As further improvement of the utility model, described connecting shaft is integrally machined using 17-4PH stainless steels and formed.

As further improvement of the utility model, described butterfly plate and rotating shaft are integral type structure.

As further improvement of the utility model, described butterfly plate and rotating shaft use 316 stainless steel integrally casting shapings.

As further improvement of the utility model, described seal includes metal seal and corrosion-resistant seal, Described metal seal and corrosion-resistant seal are tapered, and described metal seal fits with lower valve body, described The outer surface with rotating shaft, the inner surface of Fluorine-lined set fit corrosion-resistant seal respectively, described metal seal and corrosion-resistant Seal is engaged to form sealing pair, and described sealing pair forms angle a, described angle a with shaft centerline and is more than 25 degree Less than 50 degree.

As further improvement of the utility model, described angle a is more than 30 degree and is less than or equal to 45 degree.

The beneficial effects of the utility model are, upper valve body, lower valve body, which are detachably connected, is easy to Fluorine-lined set installation, connecting shaft with Butterfly plate is detachably connected, and is easy to the installation and replacing of connecting shaft, service life length, and the peace of butterfly plate is easy in rotating shaft and the setting of butterfly plate Dress, and can guarantee that in butterfly plate process butterfly plate is cylindrical with the axiality of rotating shaft, avoids butterfly plate from being leaked in working, seal and The setting of elastic component, butterfly valve is avoided to be leaked from butterfly plate junction, good sealing effect.The utility model also has simple in construction, dress With convenient, reliable in action, the advantages that service life is long.

Brief description of the drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment.

Accompanying drawing 2 is the half section structure diagram of accompanying drawing 1.

Accompanying drawing 3 is the structure enlargement diagram at I in accompanying drawing 2.

In figure, 1, upper valve body；11st, connecting shaft；2nd, lower valve body；21st, storage tank；22nd, seal；23rd, elastic component；24th, it is golden Belong to seal；25th, corrosion-resistant seal；26th, sealing pair；3rd, butterfly plate；31st, rotating shaft；4th, Fluorine-lined set；41st, medium channel；5th, arc Groove；51st, anti-corrosion layer.

Embodiment

The utility model embodiment is described further below in conjunction with the accompanying drawings：

As shown in Fig. 1 combinations Fig. 2-3, a kind of fluorine lining butterfly valve, including upper valve body 1, lower valve body 2 and butterfly plate 3, described upper valve Body 1 and lower valve body 2 are detachably connected, and integral type Fluorine-lined set 4, described Fluorine-lined are arranged with outside described upper valve body 1, lower valve body 2 Set 4 is provided with the medium channel 41 passed through for medium, and described butterfly plate 3 is in medium channel 41 and for controlling medium channel 41 open or closes, described upper valve body 1 are provided with connecting shaft 11, and described one end of connecting shaft 11 is connected with operating parts, separately One end is detachably connected through Fluorine-lined set 4 with butterfly plate 3, and described butterfly plate 3 is provided with rotating shaft 31, and described rotating shaft 31 passes through lining In the insertion lower valve body 2 of fluorine set 4, storage tank 21 is provided with described lower valve body 2, the He of seal 22 is provided with described storage tank 21 Elastic component 23, described elastic component 23 have movement tendency of the driving seal 22 close to rotating shaft 31.Upper valve in the utility model Body, lower valve body, which are detachably connected, is easy to Fluorine-lined set installation, and connecting shaft is detachably connected with butterfly plate, is easy to the installation and more of connecting shaft Change, service life length, the installation of butterfly plate is easy in rotating shaft and the setting of butterfly plate, and can guarantee that butterfly plate is cylindrical in butterfly plate process With the axiality of rotating shaft, avoid butterfly plate from being leaked in working, the setting of seal and elastic component, avoid butterfly valve from being let out from butterfly plate junction Leakage, good sealing effect.The advantages that the utility model also has simple in construction, easy to assembly, reliable in action, and service life is long.

Deep-slotted chip breaker 5 is equipped with described upper valve body 1 and lower valve body 2, anti-corrosion layer 51 is provided with described deep-slotted chip breaker 5. Specifically, described upper valve body 1 and lower valve body 2 cave inward to be formed for anti-corrosion layer 51 install deep-slotted chip breaker 5.So Structure valve body is further sealed, avoid medium from Fluorine-lined cover junction leakage contribution valve body performance so that product Long lifespan.

Described connecting shaft 11 is integrally machined using hardening stainless steel and formed.Specifically, described connecting shaft 11 uses 17-4PH stainless steels, which are integrally machined, to be formed.Such structure is easy to the installation of butterfly plate and connecting shaft to assemble, while adds connection The mechanical performance of axle, connecting shaft is avoided to be twisted off in working so that long product lifecycle.

Described butterfly plate 3 and rotating shaft 31 are integral type structure.Specifically, described butterfly plate 3 and rotating shaft 31 use 316 not Rust steel integrally casting shaping.Butterfly plate and the structure of rotating shaft cause product to be easy to process, while ensure that butterfly plate is cylindrical same with rotating shaft Axle degree so that butterfly plate can reliably close valve, avoid butterfly plate in work from leaking, butterfly plate and rotating shaft corrosion resistance and good so that production Product service life is grown.

Described seal 22 includes metal seal 24 and corrosion-resistant seal 25, described metal seal 24 and resistance to Corrosion seal 25 is tapered, and described metal seal 24 fits with lower valve body 2, and described corrosion-resistant seal 25 divides Outer surface, the inner surface of Fluorine-lined set 4 not with rotating shaft 31 fit, described metal seal 24 and the phase of corrosion-resistant seal 25 Sealing pair 26 is cooperatively formed, described sealing pair 26 forms angle a, described angle a with the center line of rotating shaft 31 and is more than 25 degree small In 50 degree.Specifically, described angle a is more than 30 degree and is less than or equal to 45 degree.In particular, in order to increase the axial direction of product Pressure, it can set and angle a is arranged to 30 degree, now preferably increase the elastic force of elastic component certainly（Increase elasticity can be selected The quantity of part changes the more preferable disc spring of elastic force）, avoid the reduction of radial pressure.When angle a is arranged to 45 degree, axially Pressure and the balanced increase of radial pressure, avoid leaking, while reduce cost.The utility model passes through metal seal, corrosion-resistant The structure and angle of seal are set so that metal seal and corrosion-resistant seal can provide enough axially and radially pressures Power, ensure that butterfly plate will not leak with valve body junction, good seal performance, do not let out from original 10,000 life tests that are carried out continuously Leakage, which increases to, to be carried out continuously 50,000 life tests and does not leak, and substantially increases the service life of product, the utility model also has There is simple in construction, easy to assembly, reliable in action, the advantages that service life is long.

Every technical staff's notice：Although the utility model describes according to above-mentioned embodiment, this The invention thought of utility model is not limited to that utility model, any repacking with inventive concept, will all include this specially In sharp scope of patent protection.

Claims (9)

1. a kind of fluorine lining butterfly valve, including upper valve body（1）, lower valve body（2）And butterfly plate（3）, it is characterised in that:Described upper valve body （1）And lower valve body（2）It is detachably connected, described upper valve body（1）, lower valve body（2）It is arranged with integral type Fluorine-lined set outside（4）, institute The Fluorine-lined set stated（4）It is provided with the medium channel passed through for medium（41）, described butterfly plate（3）Located at medium channel（41）Inside simultaneously For controlling medium channel（41）Open or close, described upper valve body（1）It is provided with connecting shaft（11）, described connecting shaft （11）One end is connected with operating parts, and the other end passes through Fluorine-lined set（4）With butterfly plate（3）Detachably it is connected, described butterfly plate（3） It is provided with rotating shaft（31）, described rotating shaft（31）Through Fluorine-lined set（4）Insert lower valve body（2）Interior, described lower valve body（2）Inside set There is storage tank（21）, described storage tank（21）It is interior to be provided with seal（22）And elastic component（23）, described elastic component（23）Tool There is driving seal（22）Close to rotating shaft（31）Movement tendency.

2. fluorine lining butterfly valve according to claim 1, it is characterised in that described upper valve body（1）And lower valve body（2）On be all provided with There is deep-slotted chip breaker（5）, described deep-slotted chip breaker（5）It is interior to be provided with anti-corrosion layer（51）.

3. fluorine lining butterfly valve according to claim 2, it is characterised in that described upper valve body（1）And lower valve body（2）It is inside Depression, which is formed, is used for anti-corrosion layer（51）The deep-slotted chip breaker of installation（5）.

4. fluorine lining butterfly valve according to claim 1, it is characterised in that described connecting shaft（11）Using hardening stainless steel one Body is process.

5. fluorine lining butterfly valve according to claim 4, it is characterised in that described connecting shaft（11）Using 17-4PH stainless steels It is integrally machined and forms.

6. fluorine lining butterfly valve according to claim 1, it is characterised in that described butterfly plate（3）And rotating shaft（31）For integral type knot Structure.

7. fluorine lining butterfly valve according to claim 6, it is characterised in that described butterfly plate（3）And rotating shaft（31）Using 316 not Rust steel integrally casting shaping.

8. fluorine lining butterfly valve according to claim 1, it is characterised in that described seal（22）Including metal seal （24）With corrosion-resistant seal（25）, described metal seal（24）With corrosion-resistant seal（25）It is tapered, it is described Metal seal（24）With lower valve body（2）Fit, described corrosion-resistant seal（25）Respectively with rotating shaft（31）Outer surface, Fluorine-lined set（4）Inner surface fit, described metal seal（24）With corrosion-resistant seal（25）It is engaged to form sealing It is secondary（26）, described sealing pair（26）With rotating shaft（31）Center line forms angle a, described angle a and is more than 25 degree less than 50 degree.

9. fluorine lining butterfly valve according to claim 8, it is characterised in that described angle a is more than 30 degree and is less than or equal to 45 degree.