CN217927181U - Integral upper cover opening soft sealing butterfly valve - Google Patents
Integral upper cover opening soft sealing butterfly valve Download PDFInfo
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- CN217927181U CN217927181U CN202221956663.7U CN202221956663U CN217927181U CN 217927181 U CN217927181 U CN 217927181U CN 202221956663 U CN202221956663 U CN 202221956663U CN 217927181 U CN217927181 U CN 217927181U
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Abstract
The utility model discloses an integral upper cover-opening soft sealing butterfly valve, which comprises a valve body, a valve cover, a butterfly plate, an upper valve shaft and a lower valve shaft, wherein the upper end of the valve body is provided with an opening for the butterfly plate to go in and out from the upper part and the lower part, and the valve cover is arranged at the upper end of the valve body and covers the opening; the valve body is provided with a valve seat facing the valve cavity, a T-shaped main sealing ring for sealing is arranged between the valve seat and the butterfly plate, the T-shaped main sealing ring is arranged in a groove of the butterfly plate, and a pressing plate for pressing the T-shaped main sealing ring is arranged on one side surface of the butterfly plate facing the fluid; the upper valve shaft and the lower valve shaft are arranged eccentrically to the center line L1 of the valve seat, the upper valve shaft and the lower valve shaft are arranged eccentrically to the center line L2 of the valve channel, and when the valve is opened, the T-shaped main sealing ring can be separated from the valve seat instantly. The valve can be maintained on line, and the valve can be maintained under the condition that the whole valve is not detached from a pipeline. The valve is a double-eccentric soft sealing butterfly valve, the T-shaped main sealing ring can be separated from the valve seat instantly, no abrasion is caused, and the service life is greatly prolonged.
Description
Technical Field
The utility model relates to the field of machinary, especially, relate to the butterfly valve, specifically be an integral soft sealing butterfly valve that uncaps on.
Background
The butterfly valve is a regulating valve with simple structure, the conventional butterfly valve is that a disc-shaped butterfly plate rotates around a valve shaft in an inner cavity of a cylindrical valve body, and the whole valve is required to be detached from a pipeline during maintenance, which is very troublesome. In addition, the valve rod of the conventional butterfly valve is connected with the butterfly plate through the cylindrical pin, when the valve shaft is disassembled, the cylindrical pin can be taken down only by punching and drilling threads on the cylindrical pin, and a new cylindrical pin needs to be processed again when the valve shaft is reassembled.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of above-mentioned technique, provide one kind and have by, regulatory function, online easy maintenance's integral soft seal butterfly valve that uncaps on to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme: an integral upper cover opening soft sealing butterfly valve is characterized by comprising a valve body, a valve cover, a butterfly plate, an upper valve shaft and a lower valve shaft, wherein the valve body is provided with a valve cavity and a valve passage; the butterfly plate is arranged in the valve cavity, the upper valve shaft penetrates through the valve cover, the lower end of the upper valve shaft is connected with the butterfly plate through a spline, the lower valve shaft penetrates through the valve body and is inserted into the butterfly plate, the bottom of the valve body is provided with a lower end cover for supporting the lower valve shaft, the butterfly plate rotates around the lower valve shaft, and the upper valve shaft and the lower valve shaft are coaxially arranged;
a valve seat facing the valve cavity is arranged on the valve body, a T-shaped main sealing ring for sealing is arranged between the valve seat and the butterfly plate, a pressing plate is arranged on one side surface of the butterfly plate facing the fluid, a circle of butterfly plate groove is formed by the pressing plate and the butterfly plate in the circumferential direction, the T-shaped main sealing ring is arranged in the butterfly plate groove and is pressed and fixed by the pressing plate,
the upper valve shaft and the lower valve shaft are arranged eccentrically to the center line L1 of the valve seat, the upper valve shaft and the lower valve shaft are arranged eccentrically to the center line L2 of the valve channel, and when the valve is opened, the T-shaped main sealing ring can be separated from the valve seat instantly.
The valve seat is formed by overlaying hard alloy on the valve body and is processed into a smooth conical surface, so that the valve seat has good friction resistance and can also achieve excellent sealing performance. The lower end cover supports the weight of parts such as the lower valve shaft, the butterfly plate and the like, and ensures that the sealing position of the T-shaped main sealing ring is not deformed downwards.
The utility model discloses the technical problem that will solve can also be realized through following technical scheme, the valve gap passes through the bolt fastening in the upper end of valve body, is equipped with the O type sealing washer sealed with the valve gap cooperation on the valve body, the central part of valve gap is equipped with the shaft hole, goes up the valve shaft and passes through the bearing to be fixed in the shaft hole, is equipped with the filler on last valve shaft upper portion, is equipped with the gland that compresses tightly the filler on the filler.
The utility model discloses the technical problem that will solve can also be realized through following technical scheme, the disk seat is even as an organic whole with the valve body, establishes to glossy conical surface towards the disk seat surface of valve pocket.
The utility model discloses the technical problem that will solve can also be realized through following technical scheme, the clamp plate passes through set screw to be fixed on the butterfly plate, still be equipped with at the clamp plate with T shape main seal complex mounting groove. The interference magnitude between the T-shaped main sealing ring and the valve seat is adjusted by screwing the fixing screw into the depth of the butterfly plate threaded hole.
The utility model discloses the technical problem that will solve can also be realized through following technical scheme, the lower part of valve body is equipped with the lower shaft hole of installation lower valve shaft, is equipped with the O type circle of the sealed lower valve shaft of twice in the lower shaft hole, be equipped with in the butterfly plate with lower valve shaft complex lower bearing. The sealing of the lower valve shaft ensures zero leakage by two O-shaped rings.
The utility model discloses the technical problem that will solve can also be realized through following technical scheme, be equipped with the adjusting screw who adjusts fixed T shape main seal circle on the lower end cover.
This device valve gap is installed in the upper end of valve body, and uncovered length and the width of valve body upper end are greater than the complex body of butterfly board and clamp plate, and the whole business turn over from top to bottom of enough butterfly board pressure plate, when the valve need maintenance, the butterfly board can be through the uncovered business turn over in and out in valve body upper end, need not dismantle the valve from the pipeline. The upper valve shaft penetrates through the lower end of the valve cover to be connected with the butterfly plate through a spline, the T-shaped main sealing ring is installed on the groove of the butterfly plate, the installation groove of the pressing plate is pressed on the T-shaped main sealing ring to be matched with the butterfly plate, and the sealing effect is achieved through interference between the T-shaped main sealing ring and the valve seat to serve as the main sealing of the valve. The lower valve shaft is supported by the valve body and the lower end cover, the head part of the lower valve shaft is inserted into the butterfly plate, the butterfly plate can rotate around the lower valve shaft, the upper valve shaft is sealed by the packing, and the lower valve shaft is sealed by the O-shaped ring.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1) The valve can be maintained on line, and the valve can be maintained without disassembling the whole valve from the pipeline.
2) The upper valve shaft is in splined connection with the shaft hole of the butterfly plate, and the upper valve shaft and the shaft hole of the butterfly plate are tightly matched and can be freely detached.
3) The upper valve shaft, the lower valve shaft and the valve seat are eccentric by L1, the upper valve shaft, the lower valve shaft and the valve channel are eccentric by L2, when the valve is opened, the T-shaped main sealing ring can be separated from the valve seat instantly, the T-shaped main sealing ring is free of abrasion, and the service life is greatly prolonged.
Drawings
Fig. 1 is a schematic structural view of an integral upper cover-opening soft seal butterfly valve of the present invention;
fig. 2 is a right-view structural diagram of fig. 1.
1. A lower end cover; 2. a lower valve shaft; 3. an O-shaped ring; 4. a lower bearing; 5. a butterfly plate; 6. a valve body; 7. an O-shaped sealing ring; 8. a bolt; 9. a bearing; 10. a filler; 11. a packing gland; 12. an upper valve shaft; 13. a valve cover; 14. a valve seat; 15. a T-shaped main seal ring; 16. pressing a plate; 17. a set screw; 18. and adjusting the screw.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention relates to an integral upper cover-opening soft sealing butterfly valve, which comprises a valve body 6, a valve cover 13, a butterfly plate 5, an upper valve shaft 12 and a lower valve shaft 2, wherein the valve body 6 is provided with a valve cavity and a valve passage, an opening for the butterfly plate 5 to go in and out is arranged at the upper end of the valve body 6, the opening is rectangular, and the valve cover 13 is arranged at the upper end of the valve body 6 and covers the opening. On the side of the butterfly plate 5 facing the fluid, a pressure plate 16 is provided, which presses against the T-shaped main seal 15. The length and the width of an opening at the upper end of the valve body 6 are larger than those of a combination body of the butterfly plate 5 and the pressing plate 16, so that the butterfly plate 5 can be integrally moved in and out of the pressing plate 16 up and down, when the valve needs to be maintained, the butterfly plate 5 can be moved in and out through the opening at the upper end of the valve body 6, and the valve does not need to be detached from a pipeline.
The valve cover 13 is fixed at the upper end of the valve body 6 through a bolt 8, the valve body 6 is provided with an O-shaped sealing ring 7 which is matched and sealed with the valve cover 13, the center of the valve cover 13 is provided with a shaft hole, the upper valve shaft 12 is fixed in the shaft hole through a bearing 9, the upper part of the upper valve shaft 12 is provided with a packing 10, and the packing 10 is provided with a packing gland 11 which compresses the packing 10. The sealing of the upper valve shaft 12 is solved by the packing 10, and the packing gland 11 is not only responsible for compressing the packing to achieve the sealing effect, but also used for blocking the upward string of the upper valve shaft 12 due to buoyancy by the inner ring step. The upper valve shaft 12 is supported by the bearing 9, the bearing 9 is made of composite materials, the friction coefficient is low, the bearing capacity is high, and the friction torque between the upper valve shaft 12 and the bearing 9 is low.
The butterfly plate 5 is arranged in the valve cavity, the upper valve shaft 12 penetrates through the valve cover 13, the lower end of the valve cover is connected with the butterfly plate 5 through a spline, and when the upper valve shaft 12 rotates, the butterfly plate 5 can be driven to rotate. The lower valve shaft 2 is inserted into the butterfly plate 5 through the valve body 6, the lower end cover 1 supporting the lower valve shaft 2 is arranged at the bottom of the valve body 6, the butterfly plate 5 rotates around the lower valve shaft 2, and the upper valve shaft 12 and the lower valve shaft 2 are coaxially arranged.
The valve body 6 is provided with a valve seat 14 facing the valve cavity, the valve seat 14 is connected with the valve body 6 into a whole, and the surface of the valve seat 14 facing the valve cavity is provided with a smooth conical surface. The valve seat 14 is made of hard alloy and is welded on the valve body 6 and machined into a smooth conical surface, so that the valve seat has good friction resistance and can also achieve excellent sealing performance.
A T-shaped main sealing ring 15 for sealing is arranged between the valve seat 14 and the butterfly plate 5, and the T-shaped main sealing ring 15 and the valve seat 14 achieve a sealing effect through interference to serve as a main seal of the valve. The T-shaped main sealing ring 15 is arranged in the groove of the butterfly plate 5.
The pressure plate 16 is fixed on the butterfly plate 5 through a fixing screw 17, and the pressure plate 16 is further provided with a mounting groove matched with the T-shaped main sealing ring 15. The interference between the T-shaped main sealing ring 15 and the valve seat 14 is adjusted by the depth of the threaded hole of the butterfly plate 5 into which the fixing screw 17 is screwed.
The lower part of the valve body 6 is provided with a lower shaft hole for installing the lower valve shaft 2, two O-shaped rings 3 for sealing the lower valve shaft 2 are arranged in the lower shaft hole, and a lower bearing 4 matched with the lower valve shaft 2 is arranged in the butterfly plate 5. Therefore, the butterfly plate 5 can rotate around the lower valve shaft 2, and the lower bearing 4 is made of composite materials, so that the friction coefficient is low and the bearing capacity is high. The sealing of the lower valve shaft 2 is ensured by two O-rings 3 to have zero leakage. The lower end cover 1 supports the weight of the lower valve shaft 2, the butterfly plate 5 and other parts, and ensures that the sealing position of the T-shaped main sealing ring 15 is not deformed downwards.
And the lower end cover 1 is provided with an adjusting screw 18 for adjusting and fixing the T-shaped main sealing ring 15, and the adjusting screw 18 consists of an upper screw and a lower screw. After the valve is assembled, the T-shaped main sealing ring and the valve seat 14 are not uniformly distributed due to errors of machining, assembly and the like, when deviation exists, the previous adjusting screw 18 can be screwed, and when the T-shaped main sealing ring 15 is in a proper position, the other adjusting screw 18 is screwed, so that the position of the adjusting screw 18 is fixed firmly.
The utility model discloses a two eccentric soft seal butterfly valves, go up the eccentric L1 setting of central line of valve shaft 12 and lower valve shaft 2 and disk seat 14, go up valve shaft 12 and lower valve shaft 2 and the eccentric L2 setting of valve passage central line, when the valve is opened, T shape main seal 15 can break away from disk seat 14 in the twinkling of an eye, and the wearing and tearing of T shape main seal 1515 have lacked much, very big extension life.
The utility model discloses the advantage of the soft sealed butterfly valve of conventionality relatively reaches real online maintenance on guaranteeing original performance basis, need not join in marriage moreover and make the pin, can real part exchange.
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 invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an on integral soft seal butterfly valve that uncaps, includes valve body and butterfly plate, its characterized in that: the butterfly valve is characterized in that a valve cavity and a valve passage are arranged in the valve body, an opening for the butterfly plate to go in and out is formed in the upper end of the valve body, and a valve cover is arranged at the upper end of the valve body and covers the opening; the butterfly plate is arranged in the valve cavity, an upper valve shaft is arranged in the valve cover, the upper valve shaft penetrates through the valve cover, the lower end of the upper valve shaft is connected with the butterfly plate through a spline, a lower valve shaft is arranged at the lower end of the valve body, and the lower valve shaft and the upper valve shaft are coaxially arranged; the lower valve shaft penetrates through the valve body and is inserted into the butterfly plate, the bottom of the valve body is provided with a lower end cover for supporting the lower valve shaft, the butterfly plate rotates around the lower valve shaft,
a valve seat facing the valve cavity is arranged on the valve body, a T-shaped main sealing ring for sealing is arranged between the valve seat and the butterfly plate, a pressing plate is arranged on one side surface of the butterfly plate facing the fluid, a circle of butterfly plate groove is formed on the circumferential direction of the pressing plate and the butterfly plate, the T-shaped main sealing ring is arranged in the butterfly plate groove and is pressed and fixed by the pressing plate,
the upper valve shaft and the lower valve shaft are eccentrically arranged with the central line of the valve seat, and the upper valve shaft and the lower valve shaft are eccentrically arranged with the central line of the valve channel.
2. The integrated upper-cover soft seal butterfly valve according to claim 1, wherein: the valve cover is fixed at the upper end of the valve body through a bolt, an O-shaped sealing ring matched and sealed with the valve cover is arranged on the valve body, a shaft hole is formed in the center of the valve cover, the upper valve shaft is fixed in the shaft hole through a bearing, packing is arranged on the upper portion of the upper valve shaft, and a packing gland for compressing the packing is arranged on the packing.
3. The integrated upper-cover soft seal butterfly valve according to claim 1, wherein: the valve seat and the valve body are connected into a whole, and the surface of the valve seat facing the valve cavity is a smooth conical surface.
4. The integrated upper-cover soft seal butterfly valve according to claim 1, wherein: the pressure plate is fixed on the butterfly plate through a fixing screw, and the pressure plate is further provided with a mounting groove matched with the T-shaped main sealing ring.
5. The integrated upper-cover soft seal butterfly valve according to claim 1, wherein: the lower part of the valve body is provided with a lower shaft hole for mounting the lower valve shaft, two O-shaped rings for sealing the lower valve shaft are arranged in the lower shaft hole, and a lower bearing matched with the lower valve shaft is arranged in the butterfly plate.
6. The integrated upper-cover soft seal butterfly valve according to claim 1, wherein: and the lower end cover is provided with an adjusting screw for adjusting and fixing the T-shaped main sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221956663.7U CN217927181U (en) | 2022-07-27 | 2022-07-27 | Integral upper cover opening soft sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221956663.7U CN217927181U (en) | 2022-07-27 | 2022-07-27 | Integral upper cover opening soft sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217927181U true CN217927181U (en) | 2022-11-29 |
Family
ID=84149169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221956663.7U Active CN217927181U (en) | 2022-07-27 | 2022-07-27 | Integral upper cover opening soft sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217927181U (en) |
-
2022
- 2022-07-27 CN CN202221956663.7U patent/CN217927181U/en active Active
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