CN204828703U - Airtight type ventilation butterfly valve of anti -lock - Google Patents
Airtight type ventilation butterfly valve of anti -lock Download PDFInfo
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- CN204828703U CN204828703U CN201520603821.4U CN201520603821U CN204828703U CN 204828703 U CN204828703 U CN 204828703U CN 201520603821 U CN201520603821 U CN 201520603821U CN 204828703 U CN204828703 U CN 204828703U
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Abstract
The utility model discloses an airtight type ventilation butterfly valve of anti -lock, include: valve body, butterfly plate and valve rod, the inner wall of valve body is the left -leaning inclined plane of round, the outer wall of butterfly plate is equipped with the right deviation inclined plane that the inner wall is opposite with the valve body, the left -leaning inclined plane of valve body touches with the right deviation inclined plane joggle joint of butterfly plate, the axle head is provided with the oil seal ring with the contact site of valve body on the valve rod. In this way, the utility model discloses can effectively reduce dust impurity's the volume of piling up, prevent the valve rod locking, the leakage rate is low to <= 0.5%.
Description
Technical field
The utility model relates to industrial furnace mating valve technical field, particularly relates to a kind of anti-lock closed type ventilation butterfly valve.
Background technique
In prior art, ventilation butterfly valve is a kind of non-closed type butterfly valve, be widely used in the pipelines such as industry, metallurgy, environmental protection and make ventilation parameters rate-of flow, when on the gas pipeline that ventilation butterfly valve is arranged on dust-laden coal gas, in long-term using process, when running into high temperature, particularly under the operating mode that dust impurities content is more, a large amount of dust impurities assembled causes rotating shaft running resistance to increase, and finally occurs the phenomenon of locking, in addition owing to being non-closed type butterfly valve, there is the leak-down rate up to 3%.
Model utility content
The technical problem that the utility model mainly solves is to provide a kind of anti-lock closed type ventilation butterfly valve, effectively can reduce the accumulating amount of dust impurities, prevent valve rod locking, simultaneously good airproof performance.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: provide a kind of anti-lock closed type ventilation butterfly valve, comprise: valve body, butterfly plate and valve rod, the inwall of described valve body is the left-leaning inclined-plane of a circle, the outer wall of described butterfly plate is provided with the Right deviation inclined-plane contrary with the inwall of valve body, the left-leaning inclined-plane of described valve body and the Right deviation inclined-plane joggle(d) joint of butterfly plate touch, and on described valve rod, the contacting part of axle head and valve body is provided with oil seal washer.
In the utility model preferred embodiment, the angle of inclination on described left-leaning inclined-plane and Right deviation inclined-plane is between 30 degree of-45 degree.
The beneficial effects of the utility model are: the utility model overall structure is simple, lightweight, open and close rapidly, operational torque is little, easy to operate, flexibly laborsaving, basic, normal, high different medium temperature and Korrosionsmedium thereof can be met, because of dust impurities overheap, and running resistance the increase even problem of locking can not be occurred.Special adaptation is used for combustion-supporting air or high-temperature flue gas and uses as cut-out or regulate, good airproof performance, and leak-down rate is low to moderate≤and 0.5%.。
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model anti-lock closed type ventilation butterfly valve;
Fig. 2 is the meshing engagement structure partial schematic diagram of valve body shown in Fig. 1, butterfly plate;
In accompanying drawing, the mark of each parts is as follows: 1, valve body; 2, butterfly plate; 3, valve rod; 4, oil seal washer; 10, left-leaning inclined-plane; 20, Right deviation inclined-plane.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Refer to Fig. 1 and Fig. 2, the utility model is embodiment comprise: a kind of anti-lock closed type ventilation butterfly valve, comprise: valve body 1, butterfly plate 2 and valve rod 3, the inwall of described valve body 1 is the left-leaning inclined-plane 10 of a circle, the outer wall of described butterfly plate 2 is provided with the Right deviation inclined-plane 20 contrary with the inwall of valve body 1, the left-leaning inclined-plane 10 of described valve body 1 engages with the Right deviation inclined-plane 20 of butterfly plate 2 and contacts, and on described valve rod 3, the contacting part of axle head and valve body 1 is provided with oil seal washer 4.
Furtherly, the angle of inclination on described left-leaning inclined-plane 10 and Right deviation inclined-plane 20 is between 30 degree of-45 degree.
The working state of the utility model anti-lock closed type ventilation butterfly valve is, after dust impurities enters valve body, As time goes on, dust impurities can accumulate in valve body 1, butterfly plate 2 and valve rod 3, and engaging between the left-leaning inclined-plane 10 of valve body 1 and the Right deviation inclined-plane 20 of butterfly plate 2 not easily falls into dust impurities, conduction oil is adhered in the oil seal washer 4 that the contacting part of axle head and valve body 1 is arranged on valve rod 3, make valve body 1, between butterfly plate 2 and valve rod 3, more there will not be the phenomenon of locking rotating shaft, the valve body 1 of inclined-plane engagement simultaneously and butterfly plate 2, good airproof performance, leak-down rate is low to moderate≤and 0.5%.。
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (2)
1. an anti-lock closed type ventilation butterfly valve, comprise: valve body, butterfly plate and valve rod, it is characterized in that, the inwall of described valve body is the left-leaning inclined-plane of a circle, the outer wall of described butterfly plate is provided with the Right deviation inclined-plane contrary with the inwall of valve body, the left-leaning inclined-plane of described valve body and the Right deviation inclined-plane joggle(d) joint of butterfly plate touch, and on described valve rod, the contacting part of axle head and valve body is provided with oil seal washer.
2. anti-lock closed type ventilation butterfly valve according to claim 1, is characterized in that: the angle of inclination on described left-leaning inclined-plane and Right deviation inclined-plane is between 30 degree of-45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520603821.4U CN204828703U (en) | 2015-08-12 | 2015-08-12 | Airtight type ventilation butterfly valve of anti -lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520603821.4U CN204828703U (en) | 2015-08-12 | 2015-08-12 | Airtight type ventilation butterfly valve of anti -lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828703U true CN204828703U (en) | 2015-12-02 |
Family
ID=54686306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520603821.4U Active CN204828703U (en) | 2015-08-12 | 2015-08-12 | Airtight type ventilation butterfly valve of anti -lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828703U (en) |
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2015
- 2015-08-12 CN CN201520603821.4U patent/CN204828703U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |