CN203297689U - Swing check valve - Google Patents
Swing check valve Download PDFInfo
- Publication number
- CN203297689U CN203297689U CN2013203359996U CN201320335999U CN203297689U CN 203297689 U CN203297689 U CN 203297689U CN 2013203359996 U CN2013203359996 U CN 2013203359996U CN 201320335999 U CN201320335999 U CN 201320335999U CN 203297689 U CN203297689 U CN 203297689U
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- CN
- China
- Prior art keywords
- valve
- valve body
- flap
- swing check
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a swing check valve. The swing check valve comprises a valve body and a valve clack, wherein the valve body further comprises a left valve body and a right valve body, the left valve body and the right valve body are connected with each other and are of a through hole structure, a valve clack groove is formed in the right valve body, a rotating shaft is arranged in the valve clack groove, the valve clack is arranged on the rotating shaft, one end of the valve clack is arranged on the right valve body in a rotatable mode through the rotating shaft, and erosion-resisting layers are arranged on the inner side wall of the left valve body and the inner side wall of the right valve body respectively. The swing check valve has the advantages that due to the fact that the left valve body and the right valve body are connected with each other to form the through hole structure, a bonnet is omitted, materials are saved, and the structure is simple and compact; due to the fact that a flow channel is of a straight-flow type, resistance is low, and leakproofness is good; the swing check valve is mainly used for automatic opening and closing of industrial pipelines for strong acid media and strong alkali media.
Description
Technical field
The utility model relates to a kind of safety check, particularly a kind of Swing check valve.
Background technique
Safety check claims again check valve, one-way valve or check valve, and its effect is to prevent medium directional flow in pipeline and the function of unlikely refluence.
In recent years, along with industry develop rapidlys such as China's oil, chemical industry, chemical plant installations is tending towards maximizing, small-bore lining valve has not originally caught up with the needs of industrial development, numerous clients are urgent thirsts for having bigbore anticorrosion valve to use on their large-scale chemical industry equipment device, common spelling through my scientific and technical personnel of company and employee is rich, and we have developed the heavy caliber fluorine-lining valve door of various new.Heavy caliber lining fluorine Swing check valve is one kind of.
Present Swing check valve as shown in Figure 1, by 1 valve body, 2 flaps, 3 rocking bars, 4 valve gaps form.The housing of valve generally is comprised of cast iron, carbon steel, stainless steel material; 2 flaps are fixed on 3 rocking bars with nut, and 2 flaps can be done the several angle rotation around straight pin by 3 rocking bars, are issued to the purpose of opening and closing valve in the medium effect.This valve volume is large, Heavy Weight, and cast iron, cast steel valve body be the acid resistant alkali dielectric corrosion not, so be not suitable for applying on strong acid, highly basic class corrosive fluid pipeline.
The model utility content
The purpose of this utility model is to provide a kind of Swing check valve, to solve the problems that exist in prior art.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of Swing check valve, is characterized in that, it comprises valve body and flap, and described valve body also comprises left valve barrel and right valve barrel, and described left valve barrel and right valve barrel interconnect and be through-hole structure; Be provided with the flap groove on described right valve barrel, be provided with rotating shaft in described flap groove, be provided with flap in described rotating shaft, described flap one end is arranged on right valve barrel by rotating shaft is rotatable, is provided with anticorrosive coat on the madial wall of described left valve barrel and right valve barrel.
In an embodiment of the present utility model, the rotation maximum angle of described flap is 62 °.
In an embodiment of the present utility model, be connected by screw between described left valve barrel and right valve barrel.
In an embodiment of the present utility model, described rotating shaft and flap are the integral type structure.
In an embodiment of the present utility model, be provided with gear block on described flap, further, be provided with the projection that matches with gear block on described left valve barrel.
The beneficial effect of a kind of Swing check valve of the present utility model is:
1. the utility model has changed the design of the large heaviness of former Swing check valve body, by the left and right valve body, interconnects, and forms through-hole structure, save valve gap, adopted the direct current type flow channel shape of left valve barrel and right valve barrel docking, beautiful shape, physical dimension is short and small, compact, has saved material.
2. exhaustive fluorinated ethylene propylene (FEP is called for short F46) is a kind of novel thermoplastic fluorocarbon resin, has good corrosion resistance, almost can resist all chemical mediators, comprise the corrosion of red fuming nitric acid (RFNA) and chloroazotic acid, can use for a long time 180 ℃ of following temperature, also have good self lubricity, electrical insulating property, creep resistance and non-viscosity, can meet medium is the pipeline needs of strong acid, highly basic class corrosive fluid.
Description of drawings
Fig. 1 is the structural representation of a kind of Swing check valve in prior art;
Fig. 2 is the structural representation of a kind of Swing check valve of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, further set forth the utility model below in conjunction with specific embodiment.
As shown in Figure 2, a kind of Swing check valve of the present utility model, it comprises valve body and flap 20, described valve body also comprises left valve barrel 11 and right valve barrel 12, described left valve barrel 11 and right valve barrel 12 interconnect by screw 13 and are through-hole structure, this valve body is designed to direct current type, and purpose is to reduce the resistance of fluid.Be provided with anticorrosive coat 30 on the madial wall of described left valve barrel 11 and right valve barrel 12, what anticorrosive coat 30 used is fluoroplastic, adopts fluoroplastics lining, has guaranteed the decay resistance of valve, can meet the special operation condition requirement of the industry such as oil, chemical industry, agricultural chemicals; Described flap 20 1 ends are arranged on right valve barrel by rotating shaft 21 is rotatable, and described flap and rotating shaft are the integral type structure; The rotation maximum angle of described flap 20 is 62 °, is provided with gear block 21 on described flap, further, is provided with the projection 22 that matches with gear block 21 on described left valve barrel, and this projection is to place restrictions on flap swing angle.
In general, every Swing check valve, its structural principle is similar.The rotating shaft rotation of its flap in valve body, the axis of rotating shaft and the sealing surface of valve body all will in one plane, seal in the time of can guaranteeing valve closing like this.The opening and closing of valve are all the working pressure effects that relies on medium.Working force by medium during use is washed flap open, and safety check is just opened, and medium also passes through; While closing, by the adverse current of medium and the deadweight of flap, the rotating shaft rotation of flap in valve body, flap and valve seat driving fit, reach the purpose of closing safety check.This valve flap is placed in right valve barrel, and the head of flap (rotating shaft) can rotate in the right valve barrel recess hole, and flap is provided with gear block, when hydrodynamic pressure is washed flap open, flap rotation 62 degree angles, this gear block just blocks on the gear piece of lining fluorine on left valve barrel, and medium just can enter runner; As there is no the block plate, and flap directly clashes into the left valve barrel inwall, and backing layer will damage, and life of valve is not long; Gear block has been arranged, just protected valve.When hydrodynamic pressure disappears, rely on the deadweight of medium counter flow and flap, flap is the rotating shaft rotation in right valve barrel, makes flap and valve body driving fit, reaches the purpose of closing safety check, the sealing surface of flap and valve body all at grade, and to perpendicular, the sealing surface of flap and valve body all is lining with fluoroplastic with MEDIA FLOW, is the soft seal state, guaranteed that from designing sealability is definitely reliable, without leaking.In case Swing check valve is closed, its sealing force just forms, and this sealing force is exactly the power of reverse media pressure-acting on flap, and seal pressure also just forms, and also just can guarantee the sealing of Swing check valve.The pipeline medium working pressure is higher, and sealing force is just larger, and seal pressure is also just larger, more easily guarantees sealing.
The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (5)
1. a Swing check valve, is characterized in that, it comprises valve body and flap, and described valve body also comprises left valve barrel and right valve barrel, and described left valve barrel and right valve barrel interconnect and be through-hole structure; Be provided with the flap groove on described right valve barrel, be provided with rotating shaft in described flap groove, be provided with flap in described rotating shaft, described flap one end is arranged on right valve barrel by rotating shaft is rotatable, is provided with anticorrosive coat on the madial wall of described left valve barrel and right valve barrel.
2. a kind of Swing check valve according to claim 1, is characterized in that, the rotation maximum angle of described flap is 62 °.
3. a kind of Swing check valve according to claim 1, is characterized in that, described rotating shaft and flap are the integral type structure.
4. a kind of Swing check valve according to claim 1, is characterized in that, is connected by screw between described left valve barrel and right valve barrel.
5. a kind of Swing check valve according to claim 1, is characterized in that, is provided with gear block on described flap, further, is provided with the projection that matches with gear block on described left valve barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203359996U CN203297689U (en) | 2013-06-13 | 2013-06-13 | Swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203359996U CN203297689U (en) | 2013-06-13 | 2013-06-13 | Swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297689U true CN203297689U (en) | 2013-11-20 |
Family
ID=49573696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203359996U Expired - Fee Related CN203297689U (en) | 2013-06-13 | 2013-06-13 | Swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297689U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032850A (en) * | 2015-03-13 | 2016-10-19 | 江苏核电有限公司 | Condensation water drainable check valve used for steam pipeline |
| CN109058529A (en) * | 2018-09-28 | 2018-12-21 | 苏州丹顿机电有限公司 | A kind of swing check valve |
-
2013
- 2013-06-13 CN CN2013203359996U patent/CN203297689U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032850A (en) * | 2015-03-13 | 2016-10-19 | 江苏核电有限公司 | Condensation water drainable check valve used for steam pipeline |
| CN109058529A (en) * | 2018-09-28 | 2018-12-21 | 苏州丹顿机电有限公司 | A kind of swing check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20180613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |