CN2264280Y - High temp. turnover pneumatic seitchable butterfly bamper - Google Patents
High temp. turnover pneumatic seitchable butterfly bamper Download PDFInfo
- Publication number
- CN2264280Y CN2264280Y CN 96233091 CN96233091U CN2264280Y CN 2264280 Y CN2264280 Y CN 2264280Y CN 96233091 CN96233091 CN 96233091 CN 96233091 U CN96233091 U CN 96233091U CN 2264280 Y CN2264280 Y CN 2264280Y
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- valve
- flap
- high temperature
- crank
- rod
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Abstract
The utility model relates to a high-temperature turning plate type pneumatic switching butterfly valve. The utility model comprises a valve body, a valve seat, a sealing ring, a valve clack, a valve rod, a rotating arm, a core shaft and a spring, wherein the valve clack, the valve rod, the rotating arm, the core shaft and the spring are connected to form a double-eccentricity turning plate type structure. A planar sealing pair is composed of the valve clack, the valve seat and the sealing ring. A driving device is a piston, crank and connecting rod mechanism. The driving device and the valve are partitioned by a middle frame, and thus the heat is radiated. The valve rod is connected with the valve body which is arranged on the back end of the valve, and the axial positioning of the valve rod is controlled by a lock sheet structure. An on-off signal of the valve clack is inputted in a sensing device of a control device and the driving device, the lineal movement of the piston is converted into the rotation of the valve rod from 0 DEG to 90 DEG, and then the valve is opened and closed.
Description
It is gas that the utility model relates to a kind of high temperature media, is used for the pneumatic switching butterfly valve on the pipeline.
Chinese patent ZL92220635.X provides a kind of anti-corrosion anti-blocking butterfly valve that blocks, main feature is that cashing the circumferential sealing that butterfly valve is arranged secondary is the plane sealing pair, the Placement of valve rod and flap is designed to two eccentric gentle moving structures, the switch that makes flap drives its 90 ° of slat belts by valve rod and rotates and realize that though this kind butterfly valve sealing effect is better, the life-span increases substantially, but owing to no sensing device, drive unit, material requires high, and processing and assembling cause a lot of difficulties, influence sealing effect and life-span.The design person once obtained Chinese patent ZL94227329.X and was entitled as " the pneumatic switching butterfly valve of slat belt ", had adopted sensing device, and the drive unit switch speed is fast, good sealing effect, and the pneumatic switching butterfly valve of long service life, but this valve can not be used under high temperature media.
The purpose of this utility model is to provide a kind of high temperature slat belt pneumatic switching butterfly valve at the deficiencies in the prior art, it according to the design person's " pneumatic switching butterfly valve of slat belt " improve the design, between drive unit and valve, install middle frame, high temperature media and drive unit in the valve are separated, increase heat diffusion area; Adopt high temperature resistant nonmetallic material on valve seat insert, not only the high temperature lower seal is effective, and is indeformable, and can be compensated at high temperature, obtains the pneumatic switching butterfly valve of long service life.
The purpose of this utility model is achieved through the following technical solutions.
The pneumatic switching butterfly valve of high temperature slat belt contains valve body, valve seat, seal ring, flap, valve rod, pivoted arm, axle, spring, with the sensing device of the switching signal input control device of flap and the drive unit of switch flap.The Placement of flap and valve rod, pivoted arm, axle, spring is two eccentric slat belt structures; Flap and valve seat, seal ring constitute the plane sealing pair; Drive unit is the piston crank linkage mechanism, power is pressurized air, crank links to each other with valve rod, the straight line motion of piston is converted to the rotation of 0 °～90 ° of valve rods, make flap realize not having friction slat belt snap switch, be characterized in valve rod lengthening with pneumatic switching butterfly valve, install middle frame (6) between valve and the drive unit, high temperature media and drive unit in the valve are separated, increase heat diffusion area by middle frame, guarantee that drive unit turns round at low temperatures, because the seal ring in the drive unit is the butyronitrile oil resistant rubber, operating temperature can only be below 100 ℃, middle frame one end is connected with the crank box of drive unit, the other end is connected with the front end valve body of valve, valve rod is supported on crank tank wall and the valve body wall, one end links to each other with crank, the other end is connected with the rear end valve body of valve, because the valve rod of the pneumatic switching butterfly valve of high temperature slat belt lengthening, valve rod is an axially locating of controlling valve rod by a locking plate structure with being connected of valve rear end valve body, adopts metal O type circle (2) to make back-end sealing between locking plate structure locking plate (3) and gland (1).
When pivoted arm and flap assembling, the size of gap width f between pivoted arm end face and flap end face is with in the flap opening process, the f value just in time went to zero to determining criterion when flap lower end external diameter overlapped with internal diameter of the seal ring, the best f value of this kind is that 50.4～85.2N/mm spring cooperates with rigidity, can reduce the vibration force of flap when opening fast, prevent that flap from breaking.
The seal ring of valve seat is high temperature resistant nonmetallic material: as the glass filled polytetrafluoroethylene, plastics such as polybenzoate or polyimide, this class material is in the time of 200 ℃, can bear the above pressure of 27 MPas, amount of deformation only is 0.20mm, easy to process, the validity height makes sealing pair have good mechanical property and physical property; If work under the high temperature more than 300 ℃, valve seat, flap sealing surface should make pile-up welding hard alloy into.Flap is that stainless steel is made, thus the working life that helps improving valve.
The working principle of the pneumatic switching butterfly valve of high temperature slat belt is identical with the pneumatic switching butterfly valve of slat belt, during unlatching, send start signal to sensing device, power gas source enters drive unit, crank drives valve rod and clockwise rotates, thereby makes pivoted arm and axle motion, drives flap and does the upwards translation and retreat a mobile segment distance of compound motion-elder generation, when its lower end external diameter overlapped with internal diameter of the seal ring, then 90 ° of turnover panels were realized opening; When closing, send shutdown signal to sensing device, course of action is opposite with unlatching, when flap just contacts with seal ring, because the effect of spring makes flap can enter the tram of sealing smoothly, is pressed on the seal ring under the drive of pivoted arm then, realizes closing.
The utlity model has following advantage:
1. switch speed is fast, can realize switching in 1 second.
2. good sealing effect, long service life can reach not have for 300,000 times and leak.
3. low, its price of cost only is the pneumatic switching butterfly valve of an external congenerous price
4. can long-term work under the high temperature more than 200 ℃, be out of shape little, easy to process, the validity height, if work under the high temperature more than 300 ℃, valve seat, flap sealing surface should make pile-up welding hard alloy into, can be effective.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing.
Fig. 1 is a kind of structural representation of the pneumatic switching butterfly valve of high temperature slat belt
Fig. 2 is the side view of sectional view Fig. 3 of Fig. 1 for Fig. 1
Concrete structure below in conjunction with the description of drawings present embodiment.
The pneumatic switching butterfly valve of high temperature slat belt latus rectum in the present embodiment is 400mm, and working medium is an air, 200 ℃ of temperature, and pressure is 1 MPa.As Fig. 1, Fig. 2 is to show, it contains valve body (11), valve seat (14), seal ring (13), flap (0), valve rod (7), pivoted arm (9), axle (8), spring (12), sensing device and drive unit (4).Sensing device is that magnetic bumps switch (15), is installed on the crank case lid (5).Drive unit (4) is the piston crank linkage mechanism, power is pressurized air, connecting rod comprises piston, piston rod, adjustable lever, one end of connecting rod and crank, adjustable lever is connected with piston rod thread, and the other end forms spherepin pair by spheroid and connecting rod and is connected, and crank is that rotary pair is connected with connecting rod.Seal ring (13) is by the polybenzoate plastic production, be combined into one by tackiness agent and valve seat (14), valve seat is installed in valve body (11) end inwall replaceably, valve rod (7) is positioned at outside the valve petal body, axis horizontal is installed, be supported on crank box (5) wall and the valve body, its appropriate section forms no relative movement with crank and pivoted arm and is connected, middle frame (6) one ends are fixedlyed connected with the crank box of drive unit, the other end is fixedlyed connected with the front end valve body of valve, it is the axially locating of controlling valve rod by a locking plate structure that valve rod is connected with valve rear end valve body, adopts aluminum metal O type circle (2) to make back-end sealing between locking plate of locking plate structure (3) and gland (1).Axle (8) is that rotary pair is connected with lug on the flap, forming no relative movement with pivoted arm is connected, during assembling, the size of the gap width f of pivoted arm end face and flap end face is with in the flap opening process, f value this criterion that just in time goes to zero was defined as 4～5 millimeters when flap lower end external diameter overlapped with internal diameter of the seal ring, the rigidity of the spring that matches with it (12) is 50.4N/mm, one end of spring acts on the flap, the other end acts on the pivoted arm, flap is made by stainless steel, be positioned at valve body, constitute the plane sealing pair with the seal ring that is bonded on the valve seat, the rotary part that forms when above-mentioned member is assembled all adopts SF-1 type composite bearing.
Claims (4)
1, the pneumatic switching butterfly valve of a kind of high temperature slat belt, contain valve body, valve seat, seal ring, flap, valve rod, pivoted arm, axle, spring, flap and valve rod, pivoted arm, axle, the Placement of spring is two eccentric slat belt structures, flap and valve seat, seal ring constitutes the plane sealing pair, the sensing device of the switching signal input control device of flap and the drive unit of switch flap, this drive unit is the piston crank linkage mechanism, power is pressurized air, crank is connected with valve rod, the straight line motion of piston is converted to the rotation of 0 °～90 ° of valve rods, make flap realize not having friction slat belt snap switch, it is characterized in that installing between valve and the drive unit middle frame (6), middle frame one end is connected with the crank box (5) of drive unit, the other end is connected with the front end valve body of valve, valve rod is supported on crank tank wall and the valve body wall, one end links to each other with crank, and the other end is connected with the rear end valve body of valve.
2. according to the pneumatic switching butterfly valve of the described high temperature slat belt of claim 1, the valve rod that it is characterized in that the pneumatic switching butterfly valve of this high temperature slat belt be connected with the rear end valve body of valve be by a locking plate structure control the axially locating of valve rod, the locking plate and the gland (1) of locking plate structure adopts metal O type circle (2) to make back-end sealing.
3. according to claim 1 or the pneumatic switching butterfly valve of 2 described high temperature slat belts, the rigidity that it is characterized in that spring (12) is 50.4～85.2N/mm.
4. according to claim 1 or the pneumatic switching butterfly valve of 2 described high temperature slat belts, it is characterized in that seal ring (13) is high temperature resistant nonmetallic material glass filled polytetrafluoroethylene, polybenzoate or polyimide plastic, more than 300 ℃, valve seat, flap sealing surface should make pile-up welding hard alloy into, and flap is that stainless steel is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96233091 CN2264280Y (en) | 1996-05-13 | 1996-05-13 | High temp. turnover pneumatic seitchable butterfly bamper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96233091 CN2264280Y (en) | 1996-05-13 | 1996-05-13 | High temp. turnover pneumatic seitchable butterfly bamper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2264280Y true CN2264280Y (en) | 1997-10-08 |
Family
ID=33909858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96233091 Expired - Fee Related CN2264280Y (en) | 1996-05-13 | 1996-05-13 | High temp. turnover pneumatic seitchable butterfly bamper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2264280Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989160A (en) * | 2023-09-26 | 2023-11-03 | 山东益凯德液压股份有限公司 | High-balance eccentric rotary valve |
-
1996
- 1996-05-13 CN CN 96233091 patent/CN2264280Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989160A (en) * | 2023-09-26 | 2023-11-03 | 山东益凯德液压股份有限公司 | High-balance eccentric rotary valve |
| CN116989160B (en) * | 2023-09-26 | 2023-12-12 | 山东益凯德液压股份有限公司 | High-balance eccentric rotary valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |