CN2806905Y - Crank type three-eccentric metal sealed butterfly valve - Google Patents
Crank type three-eccentric metal sealed butterfly valve Download PDFInfo
- Publication number
- CN2806905Y CN2806905Y CN 200520024597 CN200520024597U CN2806905Y CN 2806905 Y CN2806905 Y CN 2806905Y CN 200520024597 CN200520024597 CN 200520024597 CN 200520024597 U CN200520024597 U CN 200520024597U CN 2806905 Y CN2806905 Y CN 2806905Y
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- valve
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- eccentric
- crank
- curved bar
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Abstract
The utility model relates to a crank type three-eccentric metal sealed butterfly valve, which belongs to the technical field of the valve. The crank type three-eccentric metal sealed butterfly valve with small opening and closing moment is provided. The utility model has the technical scheme that the utility model comprises a valve body, a conical surface valve seat which is positively biased and is fixed on the valve body, a valve rod and a valve plate which is connected with the valve rod, wherein an eccentric driving device is arranged between the valve rod and the valve plate; a driving plate is fixed on the valve rod, the outer end of the driving plate is in contact with the side surface of the valve plate and is provided with a pressure spring; a spring seat which is arranged on the outer end of the pressure spring is fixed with the valve plate. The valve plate of the butterfly valve always keeps a tiny interstice with the valve seat in the opening and closing process, and thus, friction drag can not be generated between a sealing pair in the opening and closing process. The closing of the butterfly valve is that after the valve plate is rotated in 90 DEG, the valve plate is close to the valve seat and is tightly attached on the valve seat under the action of the eccentric driving device, and the purpose of closing the valve is obtained. Therefore, compared with the original valve, the opening and closing moment of the valve is obviously reduced.
Description
Technical field
The utility model relates to the airtight butterfly valve of a kind of curved bar structures three eccentric metal, belongs to valve technology field.
Background technique
At present, the airtight butterfly valve of two eccentric metals obtains using comparatively widely in industries such as metallurgy, chemical industry, electric power and oil.So-called two partially, promptly to depart from the valve rod rotating center be one inclined to one side to the sealing pair of valve plate and valve seat formation; For ease of opening/shutting valve, it is inclined to one side for another that the valve rod rotating center departs from distance b of valve body cross centre line C-C.In addition, for improving wear-resisting, the high temperature resistant and decay resistance of valve, the valve plate border of butterfly valve and the airtight position of valve seat all adopt stainless steel material to make.Its deficiency is, this butterfly valve is opening and closing, in the valve plate rotation process, between the sealing pair of valve plate and valve seat formation because of cooperating precision to produce bigger friction.The airtight butterfly valve of large-scale metal, it closes and opens moment up to hundreds of thousands ox rice.Therefore bring a lot of difficulties for production, manufacturing, auxiliary facility.In systems such as chemical industry, electric power, fire-fightings, require the keying of the system that finishes several seconds zero point almost to be difficult to realize especially.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of little airtight butterfly valve of curved bar structures three eccentric metal of moment that opens and closes.
The alleged problem of the utility model is that following technological scheme solves:
The airtight butterfly valve of a kind of curved bar structures three eccentric metal, it comprises that valve body, biasing be fixed in conical surface valve seat on the valve body, valve rod and the valve plate that links to each other with valve rod, be provided with eccentric drive mechanism between said valve rod 7 and the valve plate 2, be fixed with driver plate 12 on the valve rod 7, driver plate 12 outer ends contact with valve plate 2 sides, and establish pressure spring 16, and the set spring seat 8 in pressure spring 16 outer ends is fixed with valve plate 2.
The airtight butterfly valve of above-mentioned curved bar structures three eccentric metal, said eccentric drive mechanism are that valve rod 7 is provided with crank 4, and the crank base 6 that matches with crank 4 is fixedlyed connected with valve plate 2.
The airtight butterfly valve of above-mentioned curved bar structures three eccentric metal, 6 of said crank 4 and crank bases are provided with bearing shell 3 and oil sealing 5.
The airtight butterfly valve of above-mentioned curved bar structures three eccentric metal, the wide mouth part of said conical surface valve seat 17 right valve body 1 inwall be provided with valve plate 2 and close positive stop 11.
The airtight butterfly valve of above-mentioned curved bar structures three eccentric metal, said conical surface valve seat 17 osculum ends be fixed with valve plate 2 on the right valve body 1 one end inwalls and open positive stops 15.
The airtight butterfly valve of above-mentioned curved bar structures three eccentric metal, said closing has spacing adjusting screw 10 on the positive stop 11.
The airtight butterfly valve of above-mentioned curved bar structures three eccentric metal, said spring seat 8 is provided with spring pressure regulator plate 18 and pressure adjusting screw 9.
The airtight butterfly valve of above-mentioned curved bar structures three eccentric metal, said driver plate 12 is fixed in the middle part of valve rod 7, respectively is provided with a crank 4 on the valve rod 7 of driver plate 12 both sides.
The utility model is the improvement on the existing two airtight butterfly valve of eccentric metal bases.With the flexible connection that changes the band eccentric drive mechanism into of fixedlying connected between the valve plate of former butterfly valve and valve rod, and on valve rod, have additional driver plate, can make the valve plate of butterfly valve in opening-closing process, maintain micro-gap with valve base chamber all the time like this, so in opening-closing process, can not produce frictional resistance between sealing pair.Closing of butterfly valve is that under the effect of eccentric drive mechanism, valve plate is drawn close and fitted tightly on valve seat to valve seat, reaches the purpose of throttle down after valve plate rotates 90 °.Therefore, the keying moment of this valve has been compared obviously with former valve and has been reduced.
Description of drawings
Fig. 1 is that the master of a kind of embodiment's closed condition of the utility model looks schematic representation;
Fig. 2 is the vertical view cutaway drawing of Fig. 1;
Fig. 3 is the view that butterfly valve unlatching its sealing pair of moment shown in Figure 2 disengages;
Fig. 4 is the view after the valve plate of butterfly valve shown in Figure 3 continues to open.
The label of each parts is expressed as follows among the figure: 1. valve body; 2. valve plate; 3. bearing shell; 4. crank; 5. oil sealing; 6. crank base; 7. valve rod; 8. spring seat; 9. pressure adjusting screw; 10. spacing adjusting screw; 11. close positive stop; 12. driver plate; 13. locating stud; 14. valve body lower support; 15. unlatching positive stop; 16. pressure spring; 17. valve seat; 18. pressure regulator panel
Embodiment
Below in conjunction with embodiment's accompanying drawing, the utility model is described in further detail:
Referring to accompanying drawing, the airtight butterfly valve of this curved bar structures three eccentric metal is the improvement on the existing two airtight butterfly valve of eccentric metal bases, fixedlying connected between former valve rod and valve plate is improved to the movable connection method of band eccentric drive mechanism, and eccentric drive mechanism shown in the figure is to set up crank 4 on the valve rod 7.The crank base 6 that matches with crank 4 is fixing with valve plate 2.For increasing the service life, can set up bearing shell 3 and oil sealing 5 at crank 4 and 6 of crank bases.For guaranteeing that valve plate 2 can open and close smoothly, also be fixed with driver plate 12 on the valve rod 7.When driver plate 12 adopts the fixing mode of clamping plate and screw and valve rod 7,, can set up locating stud 13 therebetween for preventing 7 generations of driver plate 12 and valve rod slide relative.For guaranteeing that driver plate 12 outer ends can reliably contact with the side of valve plate 2, driver plate 12 is established pressure spring 16, and the set spring seat 8 in pressure spring 16 outer ends is fixed with valve plate 2 welding.On spring 8, also can set up spring pressure regulator plate 18 and pressure adjusting screw 9, so that the pressure of spring 16 is adjusted to suitable degree.Pressure spring 16 can play the buffering action weaken in the opening-closing process of valve plate 2.The eccentric drive mechanism that the utility model adopted also can adopt cam mechanism or eccentric wheel guide-bar mechanism etc.When adopting crank driving mechanism, as shown in the figure, driver plate 12 can be fixed in the middle part of valve rod 7, on the valve rod 7 of driver plate 12 both sides, respectively establish a crank 4.
When throttle down, when valve plate 2 behind half-twist under the effect of valve rod 7, draw close to valve seat 17 in the axis normal of the effect lower edge of crank 4 valve body 1 in order to guarantee valve plate 2, and valve plate 2 is fitted tightly on valve seat 17 and reach the purpose of throttle down, can the wide mouth part of conical surface valve seat 17 to the inwall of valve body 1 one ends on welding fix a valve plate 2 and close positive stop 11, and can set up spacing adjusting screw 10 on the positive stop 11 closing.For fear of valve plate 2 when closing and adjusting screw 10 bump and produce spark, adjusting screw 10 can adopt copper material to manufacture.
When valve is in opening state, cause valve plate 2 to produce swing or machine shake for preventing flowing medium pressure in the pipeline, can the osculum end of conical surface valve seat 17 on the right valve body 1 one end inwalls welding fix a valve plate 2 and open positive stops 15.
The new airtight butterfly valve of curved bar structures three eccentric metal that provides of this practicality is that the valve of 600mm is an example with the bore, its valve plate 2 in opening-closing process and the gap of 17 of valve seats can be set in 0.52mm, the throw of eccentric of set crank 4 is 12mm on the valve rod 7.
Owing to set up crank 4 on the valve rod 7 of the present utility model, when making assembling, valve rod 7 and on crank 4 positions can successfully enter valve body 1, need the internal orifice dimension of valve body lower support 14 is strengthened relatively.
Claims (8)
1. airtight butterfly valve of curved bar structures three eccentric metal, it is characterized in that: it comprises that valve body, biasing be fixed in conical surface valve seat on the valve body, valve rod and the valve plate that links to each other with valve rod, be provided with eccentric drive mechanism between said valve rod [7] and the valve plate [2], be fixed with driver plate [12] on the valve rod [7], driver plate [12] outer end contacts with valve plate [2] side, and establishes pressure spring [16], and the set spring seat [8] in pressure spring [16] outer end is fixed with valve plate [2].
2. the airtight butterfly valve of curved bar structures three eccentric metal according to claim 1 is characterized in that: said eccentric drive mechanism is that valve rod [7] is provided with crank [4], and the crank base [6] that matches with crank [4] is fixedlyed connected with valve plate [2].
3. the airtight butterfly valve of curved bar structures three eccentric metal according to claim 2 is characterized in that: be provided with bearing shell [3] and oil sealing [5] between said crank [4] and crank base [6].
4. the airtight butterfly valve of curved bar structures three eccentric metal according to claim 1 is characterized in that: the wide mouth part of said conical surface valve seat [17] be fixed with valve plate [2] on right valve body [1] inwall and close positive stop [11].
5. according to claim 1 or the airtight butterfly valve of 4 described curved bar structures three eccentric metals, it is characterized in that: said conical surface valve seat [17] osculum end be fixed with valve plate [2] on right valve body [1] the one end inwall and open positive stop [15].
6. the airtight butterfly valve of curved bar structures three eccentric metal according to claim 4 is characterized in that: said closing has spacing adjusting screw [10] on the positive stop [11].
7. the airtight butterfly valve of curved bar structures three eccentric metal according to claim 1 is characterized in that: said spring seat [8] is provided with spring pressure regulator plate [18] and pressure adjusting screw [9].
8. according to claim 2, the airtight butterfly valve of 3 or 7 described curved bar structures three eccentric metals, it is characterized in that: said driver plate [12] is fixed in the middle part of valve rod [7], respectively is provided with a crank [4] on the valve rod [7] of driver plate [12] both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024597 CN2806905Y (en) | 2005-08-03 | 2005-08-03 | Crank type three-eccentric metal sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024597 CN2806905Y (en) | 2005-08-03 | 2005-08-03 | Crank type three-eccentric metal sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2806905Y true CN2806905Y (en) | 2006-08-16 |
Family
ID=36921205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520024597 Expired - Fee Related CN2806905Y (en) | 2005-08-03 | 2005-08-03 | Crank type three-eccentric metal sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2806905Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734478A (en) * | 2011-04-08 | 2012-10-17 | 吴树源 | Elastic limit eccentric shaft butterfly valve |
| CN101952625B (en) * | 2008-01-22 | 2014-05-28 | 费希尔控制国际公司 | Apparatus to bias valve closure members |
| CN110513494A (en) * | 2019-09-12 | 2019-11-29 | 龙长贵 | Adjustable type eccentric-butterfly-valve |
-
2005
- 2005-08-03 CN CN 200520024597 patent/CN2806905Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101952625B (en) * | 2008-01-22 | 2014-05-28 | 费希尔控制国际公司 | Apparatus to bias valve closure members |
| CN102734478A (en) * | 2011-04-08 | 2012-10-17 | 吴树源 | Elastic limit eccentric shaft butterfly valve |
| CN102734478B (en) * | 2011-04-08 | 2014-09-17 | 吴树源 | Elastic limit eccentric shaft butterfly valve |
| CN110513494A (en) * | 2019-09-12 | 2019-11-29 | 龙长贵 | Adjustable type eccentric-butterfly-valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060816 Termination date: 20120803 |