CN216078350U - Butterfly valve structure of movable valve seat - Google Patents
Butterfly valve structure of movable valve seat Download PDFInfo
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- CN216078350U CN216078350U CN202122868334.9U CN202122868334U CN216078350U CN 216078350 U CN216078350 U CN 216078350U CN 202122868334 U CN202122868334 U CN 202122868334U CN 216078350 U CN216078350 U CN 216078350U
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- valve rod
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Abstract
The utility model discloses a butterfly valve structure of a movable valve seat, which comprises a support, a valve body, a butterfly plate, a valve rod and a tail cover, wherein a packing pressing plate is arranged at the inner end of the support, reserved packing is arranged inside the packing pressing plate, a shaft sleeve is nested at the inner end of the support, the lower end of the shaft sleeve is in butt joint with the valve rod, a sealing ring is nested and in butt joint with the outer side of the valve rod, the valve body is arranged at the outer side of the shaft sleeve, the butterfly plate is arranged at the outer side of the valve rod, the lower end of the valve rod is in butt joint with the pressing plate ring, a valve seat check ring is arranged at the inner end of a valve seat piece, and a split thrust ring and the tail cover are in butt joint with the inner side of the valve seat piece. This activity disk seat butterfly valve structure chooses for use flexible graphite sealing ring/to pack and guarantees valve rod department sealing stability, and the butterfly valve has three eccentric designs, through applying a moment of opening, the valve seal face breaks away from in the twinkling of an eye, and the wearing and tearing volume of sealed face is little for sealed vice has very long life, and the sealing layer of metal with graphite can provide a totally enclosed structure.
Description
Technical Field
The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve structure of a movable valve seat.
Background
Butterfly valve is widely used in petroleum, chemistry, power station and comprehensive type trade, is used for cutting off, conversion, regulation in the pipeline, and its quality has decided the safety in utilization etc. of equipment, but current butterfly valve structure still has certain defect, just as:
the sealing stability of a valve rod of the existing butterfly valve structure cannot be guaranteed, and the abrasion loss of a sealing surface is large in the process of being impacted by large liquid flow, so that the service life of a sealing element cannot be guaranteed;
the valve seat of the existing butterfly valve structure is of a fixed structure, the valve body needs to be detached to replace the valve seat of the inner structure under the condition of damage, the operation is complex, and the service cycle cannot be guaranteed.
Aiming at the problems, innovative design is urgently needed on the basis of the original butterfly valve structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a butterfly valve structure with a movable valve seat, and aims to solve the problems that the sealing stability of a valve rod of the existing butterfly valve structure in the background art cannot be guaranteed, the abrasion amount of a sealing surface is large in the process of being impacted by large liquid flow, the service life of a sealing element cannot be guaranteed, the valve seat of the existing butterfly valve structure is of a fixed structure, the valve body needs to be disassembled to replace the valve seat of an internal structure under the condition of damage, and the operation is complex.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a movable valve seat butterfly valve structure, includes support, valve body, butterfly plate, valve rod and tail-hood, the inner of support is provided with the packing clamp plate, and the inside of packing clamp plate is provided with reserves the filler, the first axle sleeve is installed to the inner nestification of support, and the lower extreme of first axle sleeve has the valve rod, and the nested butt joint in the outside of valve rod has the sealing washer, the valve body is installed in the outside of first axle sleeve, the butterfly plate is installed in the outside of valve rod, and the lower extreme butt joint of valve rod has the clamp plate circle, and the valve seat spare is installed to the lower extreme of valve rod simultaneously, the disk seat retaining ring is installed to the inner of valve seat spare, the second axle sleeve is installed to the lower extreme of valve seat spare, and the terminal mutual butt joint of second axle sleeve and valve rod, and the inboard butt joint of valve seat spare has run-off thrust ring and tail-hood.
Preferably, the sealing ring and the reserved packing are made of flexible graphite, the packing pressing plate is attached to the outer side of the valve rod through the reserved packing, and the sealing stability of the position of the valve rod 8 is guaranteed through the sealing ring made of the flexible graphite and the reserved packing.
Preferably, the butterfly plate is of a three-eccentric design, a rotating structure is formed inside the valve body through the valve rod of the butterfly plate, meanwhile, the butterfly plate is attached to the inner surface of the valve body, through the three-eccentric design of the butterfly plate, the sealing surface of the butterfly plate is separated instantly by applying an opening moment, the abrasion loss of the sealing surface is small, and the sealing pair has a long service life.
Preferably, the valve rod is provided with a blowout prevention and split ring structure, so that the valve rod is reliably kept in the valve body, the valve rod forms a rotating structure along the inner end of the valve body, and the valve rod with the blowout prevention and split ring structure enables the butt joint stability between the valve rod and the valve body to be more efficient
Preferably, the driving force of the valve body is from an external handle or a worm gear box, and can also be driven by an electric or pneumatic device.
Preferably, the valve seat spare forms the active structure along the inside of valve body, and the valve seat spare orthographically is the wedge structure to the up end and the sealing washer of valve seat spare are laminated each other and are formed seal structure, make the valve seat spare can not dismantle the valve body under the circumstances of damage, realize changing the working effect of valve seat spare.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the butterfly valve structure with the movable valve seat, the flexible graphite sealing ring/packing is selected to ensure the sealing stability of the valve rod, the butterfly valve has a triple eccentric design, the sealing surface of the valve is instantaneously separated by applying an opening torque, the abrasion loss of the sealing surface is small, so that the service life of a sealing pair is very long, and a metal and graphite sealing layer can provide a completely sealed structure;
2. this movable valve seat butterfly valve structure, handle or worm formula gear box provide the valve drive power, also can choose for use electronic or pneumatic means to drive, and its disk seat is movable structure simultaneously, can not dismantle the valve body under the condition of damage, changes the disk seat, has guaranteed the life cycle of device.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a side cross-sectional structural schematic view of the present invention;
FIG. 3 is a schematic view of the structure of FIG. 2 at A according to the present invention;
FIG. 4 is a schematic view of the structure of FIG. 2B according to the present invention.
In the figure: 1. a support; 2. a packing press plate; 3. reserving a filler; 4. a first bushing; 5. a valve body; 6. a seal ring; 7. a butterfly plate; 8. a valve stem; 9. a platen ring; 10. a valve seat member; 11. a valve seat retainer ring; 12. a second shaft sleeve; 13. a split thrust ring; 14. and a tail cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a butterfly valve structure of movable valve seat, includes support 1, packing clamp plate 2, reserves filler 3, first axle sleeve 4, valve body 5, sealing washer 6, butterfly plate 7, valve rod 8, clamp plate circle 9, valve seat spare 10, disk seat retaining ring 11, second axle sleeve 12, run from opposite directions thrust collar 13 and tail-hood 14.
The inner of support 1 is provided with the packing plate 2, and the inside of packing plate 2 is provided with reserves filler 3, first axle sleeve 4 is installed to the inner nestification of support 1, and the lower extreme of first axle sleeve 4 docks there is valve rod 8, and the nested butt joint in the outside of valve rod 8 has sealing washer 6, valve body 5 is installed in the outside of first axle sleeve 4, butterfly plate 7 is installed in the outside of valve rod 8, and the lower extreme butt joint of valve rod 8 has pressure plate ring 9, and valve seat spare 10 is installed to the lower extreme of valve rod 8 simultaneously, disk seat retaining ring 11 is installed to the inner of valve seat spare 10, second axle sleeve 12 is installed to the lower extreme of valve seat spare 10, and second axle sleeve 12 docks each other with the end of valve rod 8, and the inboard butt joint of valve seat spare 10 has run-against thrust ring 13 and tail-hood 14.
The sealing stability of the valve rod 8 is ensured by the sealing ring 6 of the flexible graphite and the reserved packing 3, the butterfly valve is in a three-eccentric design, the sealing surface of the valve is separated instantly by applying an opening torque, the abrasion loss of the sealing surface is small, the service life of a sealing pair is long, and a metal-graphite sealing layer can provide a completely sealed structure.
The driving force of the valve body 5 is from an external handle or a worm gear box, and can also be driven by an electric or pneumatic device. The valve seat member 10 forms a movable structure along the inside of the valve body 5, and the valve seat member 10 is in a wedge-shaped structure in front view, and the upper end face of the valve seat member 10 and the seal ring 6 are attached to each other to form a sealing structure.
The valve driving force is provided by a handle or a worm gear box, and an electric or pneumatic device can be selected to drive the rotary butterfly plate 7 to control the flow (cut-off and adjustment) of the medium. The opening angle of the butterfly plate 7 frame is locked by a locking device to control the flow, and when the butterfly plate 7 frame is opened by 90 degrees and is vertical to the channel, the valve is completely opened.
The working principle is as follows: when the butterfly valve structure with the movable valve seat is used, according to the figures 1-4, the butterfly valve structure is firstly placed at a position needing to work, a handle or a worm gear box is used for providing valve driving force, an electric or pneumatic device can also be selected for driving the rotary butterfly plate 7 to control the flow (cut-off and adjustment) of a medium, meanwhile, a locking device is used for locking the opening angle of the butterfly plate 7 frame to control the flow, when the butterfly plate 7 frame is opened for 90 degrees and is vertical to a channel, the valve is completely opened, the butterfly valve is closed clockwise and opened anticlockwise, meanwhile, the sealing ring 6 of flexible graphite and the reserved packing 3 are used for ensuring the sealing stability of the valve rod 8, the butterfly valve has a three-eccentric design, the sealing surface of the valve is separated instantly by applying an opening moment, the abrasion amount of the sealing surface is small, so that the sealing pair has a long service life, and the sealing layer of metal graphite can provide a completely sealed structure, the overall practicability is increased.
Those not described in detail in this specification are within the skill of the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a movable valve seat butterfly valve structure, includes support (1), valve body (5), butterfly plate (7), valve rod (8) and tail-hood (14), its characterized in that: a packing pressing plate (2) is arranged at the inner end of the bracket (1), a reserved packing (3) is arranged in the packing pressing plate (2), a first shaft sleeve (4) is nested at the inner end of the bracket (1), the lower end of the first shaft sleeve (4) is butted with a valve rod (8), the outer side of the valve rod (8) is nested and butted with a sealing ring (6), a valve body (5) is arranged on the outer side of the first shaft sleeve (4), a butterfly plate (7) is arranged on the outer side of the valve rod (8), a pressure plate ring (9) is butted at the lower end of the valve rod (8), meanwhile, a valve seat element (10) is arranged at the lower end of the valve rod (8), a valve seat retainer ring (11) is arranged at the inner end of the valve seat element (10), a second shaft sleeve (12) is arranged at the lower end of the valve seat element (10), and the second shaft sleeve (12) is butted with the tail end of the valve rod (8), and the inner side of the valve seat element (10) is butted with a split thrust ring (13) and a tail cover (14).
2. The butterfly valve structure for a movable valve seat according to claim 1, wherein: sealing washer (6) and reservation filler (3) are flexible graphite material, and pack clamp plate (2) and laminate each other through the outside of reserving filler (3) and valve rod (8).
3. The butterfly valve structure for a movable valve seat according to claim 1, wherein: butterfly plate (7) are three eccentric designs, and butterfly plate (7) pass through valve rod (8) and form revolution mechanic along the inside of valve body (5), and the internal surface of butterfly plate (7) and valve body (5) is laminated each other simultaneously.
4. The butterfly valve structure for a movable valve seat according to claim 1, wherein: the valve rod (8) is provided with an anti-blowout and split ring structure, so that the valve rod (8) is reliably retained in the valve body (5), and the valve rod (8) forms a rotating structure along the inner end of the valve body (5).
5. The butterfly valve structure for a movable valve seat according to claim 1, wherein: the driving force of the valve body (5) is from an external handle or a worm gear box, and can also be driven by an electric or pneumatic device.
6. The butterfly valve structure for a movable valve seat according to claim 1, wherein: the valve seat piece (10) forms a movable structure along the inside of the valve body (5), the valve seat piece (10) is of a wedge-shaped structure in the front view, and the upper end face of the valve seat piece (10) is attached to the sealing ring (6) to form a sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122868334.9U CN216078350U (en) | 2021-11-22 | 2021-11-22 | Butterfly valve structure of movable valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122868334.9U CN216078350U (en) | 2021-11-22 | 2021-11-22 | Butterfly valve structure of movable valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216078350U true CN216078350U (en) | 2022-03-18 |
Family
ID=80662003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122868334.9U Active CN216078350U (en) | 2021-11-22 | 2021-11-22 | Butterfly valve structure of movable valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216078350U (en) |
-
2021
- 2021-11-22 CN CN202122868334.9U patent/CN216078350U/en active Active
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