CN204628588U - A kind of double leval jib eccentric-butterfly-valve - Google Patents
A kind of double leval jib eccentric-butterfly-valve Download PDFInfo
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- CN204628588U CN204628588U CN201520326489.1U CN201520326489U CN204628588U CN 204628588 U CN204628588 U CN 204628588U CN 201520326489 U CN201520326489 U CN 201520326489U CN 204628588 U CN204628588 U CN 204628588U
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Abstract
The utility model provides a kind of double leval jib eccentric-butterfly-valve, mainly comprise quadratic crank mechanism, valve body, valve plate, valve rod, stuffing box, bearing unit and support, described quadratic crank mechanism is made up of valve plate base, bent axle, connecting rod and fixed base, described valve plate base is bolted on described valve plate, and passes through pinned connection with one end of bent axle, connecting rod; The described bent axle the other end is fixed on described valve rod by bearing pin, and the other end of described connecting rod is fixed on valve plate base by bearing pin; Described fixed base is bolted on valve body.Described quadratic crank mechanism moves and realizes the keying of valve under the driving of drive unit.Double leval jib eccentric-butterfly-valve compact structure of the present utility model, flow coefficient is large, and is designed with the structure of chamber cleaning gas, there is self-cleaning function, prevent medium from remaining on sealing surface, thus improve the sealability of this product, external bearings designs, and facilitates field maintenance, workable.
Description
Technical field
The utility model patent belongs to industrial stokehold valve technology field, is specifically related to a kind of double leval jib eccentric-butterfly-valve.
Background technique
In recent years, along with industrial level improve constantly and country advocates the requirement of energy-conserving and environment-protective energetically, cut off butterfly valve to obtain and applies more and more widely, being wherein most widely used of three eccentric butterfly valve, three eccentric butterfly valve has the large advantage of flow coefficient, be applicable to High Pressure Difference condition, its leakage class is higher, even can reach zero leakage, in addition, three eccentric butterfly valve good seal performance, can meet most working condition requirements.
In prior art, three eccentric butterfly valve belongs to moment of torsion sealing, relies on the moment of torsion of actuator to make valve plate close tighter and tighter when closedown, thus reach sealing effect, but, (as media such as flue gas, coal gas, sulphur in the occasion that some is special, or high-temperature condition, as 800 DEG C), due to the existence of thermal expansion stress, valve cannot be opened, the serious consequence such as easily cause three eccentric butterfly valve stuck, to industrial production be affected, and cause tremendous economic to lose, even cause security incident.
Model utility content
The utility model patent is for the deficiency existed in above-mentioned technology, devise a kind of double leval jib eccentric-butterfly-valve, valve is when closing, and valve plate first rotates, then translation, sealing means makes plane sealing into by conical surface seal, the generation of the phenomenon can effectively avoiding valve in the case of a high temperature stuck, the valve seat construction with chamber cleaning gas special in addition, can utilize on-the-spot high-temperature steam or high-temperature dust to purge sealing surface, in case medium remains on sealing surface, thus ensure good sealing effect;
A kind of double leval jib eccentric-butterfly-valve, mainly comprise quadratic crank mechanism, valve body, valve plate, valve rod, stuffing box, bearing unit and support, described quadratic crank mechanism is made up of valve plate base, bent axle, connecting rod and fixed base, described valve plate base is bolted on described valve plate, and passes through pinned connection with one end of bent axle, connecting rod; The described bent axle the other end is fixed on described valve rod by bearing pin, and the other end of described connecting rod is fixed on valve plate base by bearing pin; Described fixed base is bolted on valve body.Described quadratic crank mechanism moves and realizes the keying of valve under the driving of drive unit.
Described support is bolted and is installed on valve body, and described stuffing box and bearing unit are secured by bolts on support, and the upper and lower two ends of described valve rod are all interspersed in support, stuffing box and bearing unit; Described bearing unit is rolling bearing, and upper and lower two rolling bearings are that valve rod provides two strong points, can prevent valve rod from bending, stable action; The design of rolling bearing ensures that valve rod friction torque is little, convenient and reliable operation; External bearings designs, and facilitates field maintenance, workable.
After described stuffing box upper cap nut tightens, adopt belleville spring to provide continual impacting force to stuffing box, realize dynamic compensation, sustainable use 5000 switch cycles operations, and do not need adjustment or change filler, effectively extend the working life of stuffing box.
When valve opening, the bent axle be fixed on valve rod drives the valve plate base motions be fixed on valve plate, and connecting rod is connected to valve plate base and fixed base, so when valve rod rotates about 10 °, valve plate starts first translation, rotate, when valve plate is parallel with runner, valve is in full-gear again; Otherwise when valve rod opposite spin makes valve plate rotate about 80 °, drive valve plate first to rotate, then translation, when the sealing surface parallel contact of valve plate and valve body is until press seal, valve is closed completely.
The utility model patented product can be high temperature resistant, and adopt plane sealing form, sealing effect is splendid, ensure that in the case of a high temperature, and valve seat and valve plate can depart from, instantaneously without surface friction drag; To lead length nearly equal length because valve rod 03 drives length rod and valve rod 03, thus ensure that push and pull system can not be stuck.
Double leval jib eccentric-butterfly-valve compact structure of the present utility model, flow coefficient is large, and is designed with the structure of chamber cleaning gas, has self-cleaning function, prevents medium from remaining on sealing surface, thus improve the sealability of this product.Described valve rod all adopts the design of stem bearing outside up and down, and two strong points prevent valve rod from bending, stable action; Bearing design mechanism ensures that valve rod friction torque is little, convenient and reliable operation; External bearings designs, and facilitates field maintenance, workable.
Accompanying drawing explanation
Fig. 1: a kind of double leval jib eccentric-butterfly-valve of the utility model structural representation;
Fig. 2: the utility model valve plate and valve body sealing surface structural drawing;
In figure: 1, valve body, 2, valve plate, 3, valve rod, 4, stuffing box, 5, bearing unit, 6, support, 7, valve plate base, 8, connecting rod, 9, bent axle, 10, fixed base, 11, bolt, 12, bearing pin.
Embodiment
Be further described below in conjunction with the technological scheme of accompanying drawing to the utility model patent.
As shown in Figure 1, a kind of double leval jib eccentric-butterfly-valve, mainly comprise quadratic crank mechanism, valve body 1, valve plate 2, valve rod 3, stuffing box 4, bearing unit 5 and support 6, described quadratic crank mechanism is made up of valve plate base 7, connecting rod 8, bent axle 9 and fixed base 10, described valve plate base 10 is fixed on described valve plate 2 by bolt 11, and is connected by bearing pin 12 with one end of connecting rod 8, bent axle 9; The other end of described connecting rod 8 is fixed on valve plate base 7 by bearing pin 12, and described bent axle 9 the other end is fixed on described valve rod 3 by bearing pin 12; Described fixed base 10 is fixed on valve body 1 by bolt 11.Described quadratic crank mechanism moves and realizes the keying of valve under the driving of drive unit.
Described support 6 is fixedly installed on valve body 1 by bolt 11, and described stuffing box 4 and bearing unit 5 are fixed on support 6 by bolt 11, and described valve rod about 3 two ends are all interspersed in support 6, stuffing box 6 and bearing unit 5; Described bearing unit 5 is rolling bearing, and upper and lower two rolling bearings are that valve rod 3 provides two strong points, can prevent valve rod 3 from bending, stable action; The design of rolling bearing ensures that valve rod friction torque is little, convenient and reliable operation; External bearings designs, and facilitates field maintenance, workable.
When valve opening, the bent axle 9 be fixed on valve rod 3 drives the valve plate base 7 be fixed on valve plate 2 to move, connecting rod 8 is connected to valve plate base 7 and fixed base 10, so, when valve rod 3 rotates about 10 °, valve plate 2 starts first translation, then rotates, when valve plate 2 is parallel with runner, valve is in full-gear; Otherwise when valve rod 3 opposite spin makes valve plate 2 rotate about 80 °, drive valve plate 2 first to rotate, then translation, when the sealing surface parallel contact of valve plate 2 and valve body 1 is until press seal, valve is closed completely.
Claims (2)
1. a double leval jib eccentric-butterfly-valve, it is characterized in that: mainly comprise quadratic crank mechanism, valve body, valve plate, valve rod, stuffing box, bearing unit and support, described quadratic crank mechanism is made up of valve plate base, bent axle, connecting rod and fixed base, described valve plate base is bolted on described valve plate, and passes through pinned connection with one end of bent axle, connecting rod; The described bent axle the other end is fixed on described valve rod by bearing pin, and the other end of described connecting rod is fixed on valve plate base by bearing pin; Described fixed base is bolted on valve body, and described quadratic crank mechanism moves and realizes the keying of valve under the driving of drive unit; The upper and lower two ends of described valve rod are all interspersed in support, stuffing box and bearing unit; Described support is bolted and is installed on valve body, and described stuffing box and bearing unit are secured by bolts on support.
2. double leval jib eccentric-butterfly-valve according to claim 1, is characterized in that: described bearing unit is rolling bearing, and upper and lower two rolling bearings are that valve rod provides two strong points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520326489.1U CN204628588U (en) | 2015-05-20 | 2015-05-20 | A kind of double leval jib eccentric-butterfly-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520326489.1U CN204628588U (en) | 2015-05-20 | 2015-05-20 | A kind of double leval jib eccentric-butterfly-valve |
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| Publication Number | Publication Date |
|---|---|
| CN204628588U true CN204628588U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520326489.1U Active CN204628588U (en) | 2015-05-20 | 2015-05-20 | A kind of double leval jib eccentric-butterfly-valve |
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| CN (1) | CN204628588U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317013A (en) * | 2018-03-08 | 2018-07-24 | 东风商用车有限公司 | Engine exhaust brake valve |
| CN110657246A (en) * | 2019-10-15 | 2020-01-07 | 山东菲特自控阀门制造有限公司 | Four-connecting-rod eccentric butterfly valve for catalytic device |
-
2015
- 2015-05-20 CN CN201520326489.1U patent/CN204628588U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317013A (en) * | 2018-03-08 | 2018-07-24 | 东风商用车有限公司 | Engine exhaust brake valve |
| CN108317013B (en) * | 2018-03-08 | 2024-01-02 | 东风商用车有限公司 | Exhaust brake valve of engine |
| CN110657246A (en) * | 2019-10-15 | 2020-01-07 | 山东菲特自控阀门制造有限公司 | Four-connecting-rod eccentric butterfly valve for catalytic device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |