CN210372044U - Ventilation butterfly valve - Google Patents
Ventilation butterfly valve Download PDFInfo
- Publication number
- CN210372044U CN210372044U CN201921045526.6U CN201921045526U CN210372044U CN 210372044 U CN210372044 U CN 210372044U CN 201921045526 U CN201921045526 U CN 201921045526U CN 210372044 U CN210372044 U CN 210372044U
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- valve shaft
- bearing
- valve body
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Abstract
The utility model discloses a ventilation butterfly valve, which relates to the technical field of valves and comprises a valve body, a valve rod and a butterfly plate, wherein the butterfly plate is arranged on the inner wall of the valve body, the valve rod is arranged in the valve body, and the two ends of the valve rod are abutted against the two sides of the inner wall of the valve body, the ventilation butterfly valve also comprises a valve shaft and a rolling bearing structure, the two ends of the valve rod are respectively provided with a valve shaft, each valve shaft penetrates through the valve body and extends to the outer side of the valve body, each valve shaft is provided with a rolling bearing structure, each rolling bearing structure is arranged at the outer side of the valve body, each rolling bearing structure comprises a bracket, the bracket is sleeved at the outer edge of the valve shaft, a bearing seat is sleeved at the outer edge of the valve shaft, one side of the bearing seat close to the valve shaft is provided with a bearing mounting hole, the bearing mounting hole is arranged, the deep groove ball bearing is arranged in the bearing mounting hole. The device has the characteristic of reducing the operation torque.
Description
Technical Field
The utility model relates to valve technical field especially involves a ventilation butterfly valve.
Background
The ventilation butterfly valve is suitable for dust-containing smoke, air, coal gas, particulate matters and the like, is widely applied to ventilation and dust removal pipelines in the industries of metallurgy, chemical industry, electric power and the like, and is used as a pipeline control device for regulating flow or cutting off gas media. At present, the valve shaft of the traditional large-caliber ventilation butterfly valve in China does not have a rolling bearing outside the valve body, the traditional structure has little influence on the small-caliber and normal-temperature ventilation butterfly valves and can be normally used, but the influence on the valves with large calibers and high-temperature working conditions is great, because the diameter of the valve shaft of the large-caliber ventilation butterfly valve is large, the friction torque between the valve shaft and the filler and between the valve shaft and the valve body is increased, and the valve shaft can be opened and closed only by outputting larger torque. Under the action of medium, vibration is generated, and the valve body is contacted to generate friction. Under the working condition of high temperature, the valve shaft generates thermal expansion, the part contacted with the valve shaft generates friction and also generates deformation, the sealing performance is reduced, the service life is influenced, the valve shaft needs to be stopped and replaced, and economic loss is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ventilation butterfly valve for solve above-mentioned technical problem.
The utility model adopts the technical scheme as follows:
a ventilation butterfly valve comprises a valve body, a valve rod and a butterfly plate, wherein the butterfly plate is arranged on the inner wall of the valve body, the valve rod is transversely arranged inside the valve body, two ends of the valve rod are abutted against two sides of the inner wall of the valve body, the ventilation butterfly valve further comprises a valve shaft and rolling bearing structures, two ends of the valve rod are respectively provided with the valve shaft, each valve shaft penetrates through the valve body and extends to the outer side of the valve body, each valve shaft is provided with one rolling bearing structure, and each rolling bearing structure is positioned on the outer side of the valve body;
each of the rolling bearing structures includes:
the bracket is sleeved on the outer edge of the valve shaft;
the bearing seat is arranged in the bracket, the bearing seat is sleeved on the outer edge of the valve shaft, a bearing mounting hole is formed in one side, close to the valve shaft, of the bearing seat, the bearing mounting hole is formed in the bearing seat from one end, far away from the valve body, of the bearing seat, and one side, far away from the valve shaft, of the bearing seat abuts against the inner wall of the bracket;
and the deep groove ball bearing is arranged in the bearing mounting hole.
Preferably, each of the rolling bearing structures further includes:
and the end cover is arranged at the opening of the bearing mounting hole.
Preferably, each of the rolling bearing structures further includes:
and the part of the bearing seat, which is in contact with the valve shaft, is provided with the O-shaped ring.
Preferably, the valve further comprises a packing pressing ring, the outer edge of each valve shaft is provided with the packing pressing ring, one end of each packing pressing ring is clamped between one valve shaft and the valve body, and the other end of each packing pressing ring extends into one support.
Preferably, the valve shaft further comprises a packing, and the packing is arranged between each packing pressing ring and one valve shaft.
Preferably, the packing machine further comprises a packing gland, and each packing gland is arranged on each packing gland ring and used for compressing the packing.
Preferably, the valve shaft and the valve rod are connected through a pin shaft.
The technical scheme has the following advantages or beneficial effects:
the utility model discloses in, through setting up the rolling bearing structure in the outside of valve body, required moment when can reducing the operation eliminates high temperature operating mode thermal energy to the influence of part performance, improves whole equipment life, and the rolling bearing structure of setting can restrict the radial movement that the valve shaft vibration produced, prevents that the vibration from producing the friction.
Drawings
FIG. 1 is a schematic structural view of a ventilation butterfly valve of the present invention;
fig. 2 is an enlarged schematic view at a in fig. 1.
In the figure: 1. a valve body; 2. a valve stem; 3. a butterfly plate; 4. a valve shaft; 5. a support; 6. a bearing seat; 7. a bearing mounting hole; 8. a deep groove ball bearing; 9. an end cap; 10. an O-shaped ring; 11. packing and pressing a ring; 12. a filler; 13. a packing gland; 14. and (7) a pin shaft.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Fig. 1 is a schematic structural view of the ventilation butterfly valve of the present invention, fig. 2 is an enlarged schematic view of a position a in fig. 1, please refer to fig. 1 to 2, which illustrate a preferred embodiment, showing a ventilation butterfly valve, comprising: valve body 1, valve rod 2 and butterfly plate 3, butterfly plate 3 sets up on the inner wall of valve body 1, valve rod 2 transversely sets up in the inside of valve body 1, and the both sides of the both ends of valve rod 2 and the inner wall of valve body 1 offset, still include valve shaft 4, the rolling bearing structure, the both ends of valve rod 2 respectively are equipped with a valve shaft 4, and each valve shaft 4 all runs through valve body 1 and extends to the outside of valve body 1, all be equipped with a rolling bearing structure on each valve shaft 4, and each rolling bearing structure all is located the outside of valve body 1. In the embodiment, the valve body 1 is a cylinder made of a steel plate in a rolling mode, flange pieces are welded at two ends of the cylinder, the cylinder bears the circulation of a medium, and the cylinder is connected with external equipment to achieve the function of the valve; the butterfly plate 3 is formed by welding steel plates into a round shape, and has the functions of blocking medium circulation and adjusting air volume.
Further, as a preferred embodiment, each rolling bearing structure includes:
the support 5 is sleeved on the outer edge of the valve shaft 4. As shown in fig. 1, one end of the bracket 5 is fixedly connected with the outer wall of the valve body 1 for supporting the bearing seat 6, wherein the valve shaft 4 can rotate relative to the bracket 5; the support 5 is also used for connecting an external actuator.
Bearing frame 6, bearing frame 6 set up in support 5, and bearing frame 6 cover is established at the outer fringe of valve shaft 4, and one side that bearing frame 6 is close to valve shaft 4 is equipped with bearing mounting hole 7, and bearing mounting hole 7 is seted up to the inside of bearing frame 6 by the one end that valve body 1 was kept away from to bearing frame 6, and one side that valve shaft 4 was kept away from to bearing frame 6 offsets with the inner wall of support 5. The bearing seat 6 serves as a support for the deep groove ball bearing 8, the end cap 9 and the O-ring 10.
And the deep groove ball bearing 8 is arranged in the bearing mounting hole 7, and the deep groove ball bearing 8 is arranged in the bearing mounting hole 7. The deep groove ball bearing 8 is arranged on the bearing seat 6, so that the operating torque can be reduced, the influence of thermal expansion under high-temperature working conditions on the performance of parts can be eliminated, and the service life of the whole equipment can be prolonged. In this embodiment, a gap is provided between the deep groove ball bearing 8 and the valve shaft 4, and a gap is also provided between the valve body 1 and the valve shaft 4, wherein the gap between the deep groove ball bearing 8 and the valve shaft 4 is far smaller than the gap between the valve body 1 and the valve shaft 4, and under the condition of thermal expansion, the deep groove ball bearing 8 contacts with the valve shaft 4 first, so that normal use of the device is ensured, and influence of the thermal expansion on performance is eliminated.
Further, as a preferred embodiment, each rolling bearing structure further includes:
and the end cover 9 is arranged at the opening of the bearing mounting hole 7. The end cap 9 plays a role in fixing the deep groove ball bearing 8, preventing the deep groove ball bearing 8 from moving. The end cap 9 is bolted to the bearing block 6.
Further, as a preferred embodiment, each rolling bearing structure further includes:
the O-ring 10 is provided on the bearing seat 6 at a portion contacting the valve shaft 4, and the O-ring 10 is provided on the bearing seat. As shown in FIG. 2, the O-ring 10 is located on one side of the deep groove ball bearing 8 close to the valve body 1, so that dust can be prevented from entering the deep groove ball bearing 8 and affecting the use. An O-shaped groove for placing an O-shaped ring 10 is formed in the part, in contact with the valve shaft 4, of the bearing seat 6, so that the O-shaped ring 10 is convenient to place.
Further, as a preferred embodiment, the ventilation butterfly valve further includes packing pressing rings 11, a packing pressing ring 11 is disposed on an outer edge of each valve shaft 4, one end of each packing pressing ring 11 is clamped between a valve shaft 4 and the valve body 1, and the other end of each packing pressing ring 11 extends into a support 5.
Further, as a preferred embodiment, the ventilation butterfly valve further comprises a packing 12, and the packing 12 is arranged between each packing pressing ring 11 and a valve shaft 4. The packing pressing ring 11 is used for placing packing 12, and the packing 12 is annular, and a packing gland 13 is pressed at the shaft seal position (between the packing pressing ring 11 and the valve shaft 4) for sealing.
Further, as a preferred embodiment, the ventilation butterfly valve further comprises a packing gland 13, and each packing gland 13 is arranged on each packing pressing ring 11 and used for pressing the packing 12.
Further, as a preferred embodiment, the ventilation butterfly valve further comprises a pin 14, and each valve shaft 4 is connected with the valve rod 2 through the pin 14.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (7)
1. A ventilation butterfly valve comprises a valve body, a valve rod and a butterfly plate, wherein the butterfly plate is arranged on the inner wall of the valve body, the valve rod is transversely arranged inside the valve body, and two ends of the valve rod are abutted against two sides of the inner wall of the valve body;
each of the rolling bearing structures includes:
the bracket is sleeved on the outer edge of the valve shaft;
the bearing seat is arranged in the bracket, the bearing seat is sleeved on the outer edge of the valve shaft, a bearing mounting hole is formed in one side, close to the valve shaft, of the bearing seat, the bearing mounting hole is formed in the bearing seat from one end, far away from the valve body, of the bearing seat, and one side, far away from the valve shaft, of the bearing seat abuts against the inner wall of the bracket;
and the deep groove ball bearing is arranged in the bearing mounting hole.
2. The vent butterfly valve of claim 1, wherein each of said rolling bearing structures further comprises:
and the end cover is arranged at the opening of the bearing mounting hole.
3. The vent butterfly valve of claim 1, wherein each of said rolling bearing structures further comprises:
and the part of the bearing seat, which is in contact with the valve shaft, is provided with the O-shaped ring.
4. The ventilation butterfly valve of claim 1 further comprising packing rings, each packing ring being disposed on an outer edge of each valve shaft, one end of each packing ring being captured between each valve shaft and each valve body, and the other end of each packing ring extending into one of the holders.
5. The vent butterfly valve of claim 4 further comprising a packing, said packing being disposed between each of said packing rings and one of said valve shafts.
6. The vent butterfly valve of claim 5 further comprising a packing gland, one of said packing glands being disposed on each of said packing collars for compressing said packing.
7. The ventilation butterfly valve of claim 1 further comprising a pin, each of said valve shaft and said valve stem being connected by said pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045526.6U CN210372044U (en) | 2019-07-05 | 2019-07-05 | Ventilation butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045526.6U CN210372044U (en) | 2019-07-05 | 2019-07-05 | Ventilation butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210372044U true CN210372044U (en) | 2020-04-21 |
Family
ID=70269506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921045526.6U Active CN210372044U (en) | 2019-07-05 | 2019-07-05 | Ventilation butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210372044U (en) |
-
2019
- 2019-07-05 CN CN201921045526.6U patent/CN210372044U/en active Active
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| GR01 | Patent grant |