CN215950412U - Bellows sealing four eccentric butterfly valve - Google Patents
Bellows sealing four eccentric butterfly valve Download PDFInfo
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- CN215950412U CN215950412U CN202121854132.2U CN202121854132U CN215950412U CN 215950412 U CN215950412 U CN 215950412U CN 202121854132 U CN202121854132 U CN 202121854132U CN 215950412 U CN215950412 U CN 215950412U
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Abstract
A bellows seal four-eccentric butterfly valve comprises a valve body, wherein a valve cavity is formed in the valve body, a butterfly plate is arranged in the valve cavity, the valve body is provided with a neck, an actuator is arranged on the valve body, the actuator is provided with a transmission shaft, one end of the transmission shaft penetrates through the neck and extends into the valve cavity, one end of the transmission shaft extending into the valve cavity is provided with a transmission shifting fork, one end of the transmission shifting fork is movably connected with the transmission shaft, the other end of the transmission shifting fork is connected with the butterfly plate, the actuator drives the transmission shifting fork through the transmission shaft to enable the butterfly plate to be opened and closed, and the actuator rotates to drive the transmission shaft and a shifting pin to do vertical linear motion; the shifting pin drives a butterfly plate shifting fork on the butterfly plate to drive the butterfly plate to rotate around the valve shaft, so that the butterfly valve is opened and closed, the traditional valve shaft of the butterfly valve can be turned into driving rod linear motion transmission torque, the torque of an actuating mechanism is greatly reduced, and the valve economy is higher.
Description
Technical Field
The utility model relates to the technical field of butterfly valves, in particular to a corrugated pipe sealing four-eccentric butterfly valve.
Background
In the valve leakage problem, the leakage of the valve seat is concentrated on the inner leakage, and the leakage of the valve packing part is neglected, namely the outer leakage. In fact, in the contemporary society where environmental problems are increasingly emphasized at present, the fact that the harmfulness of the outer leakage is far greater than that of the inner leakage has become a non-contention. At present, most of valve leakage is the leakage of the packing seal at the valve shaft. The valve rod packing seal belongs to dynamic seal. The packing gland and the valve rod are generally sealed by rubber O-shaped rings, PTFE or graphite packing, the rubber O-shaped rings cannot resist high temperature or ultralow temperature, the graphite can resist high temperature and low temperature, the packing can be abraded by the rotation of the valve rod, the valve rod cannot be turned on or off, the number of times of turning on or off is large, and the leakage can occur after a long time.
At present, a corrugated pipe butterfly valve is provided, the structure of the corrugated pipe butterfly valve adopts a spiral guide rail with an upper valve rod and a lower valve rod, the rotary motion of a butterfly plate of the valve rod is realized, the structure is complex, the guide rail is easy to wear and lose efficacy, the torque of the spiral guide rail is small, and the corrugated pipe butterfly valve is not suitable for butterfly valves with larger calibers. In view of the above, it is particularly desirable to design a bellows butterfly valve suitable for various high-temperature, high-pressure, high-pollution, flammable, explosive, highly toxic, even radioactive and other high-risk situations, and requiring no external leakage, so as to solve the contradiction that the valve shaft of the butterfly valve needs to rotate by 90 degrees but the bellows cannot rotate.
Disclosure of Invention
In view of the above, the present invention provides a bellows-sealed four-eccentric butterfly valve.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a sealed four eccentric butterfly valves of bellows, includes the valve body, form the valve pocket in the valve body, set up the butterfly plate in the valve pocket, the valve body has the neck, set up the executor on the valve body, the executor has the transmission shaft, the one end of transmission shaft is passed the neck and is stretched into in the valve pocket, the transmission shaft stretches into one of valve pocket and serves and set up the transmission shift fork, the one end and the transmission shaft swing joint of transmission shift fork, the other end is connected with the butterfly plate, the executor passes through the transmission shaft and drives the transmission shift fork and makes the butterfly plate switch.
The preferred, the transmission shift fork includes butterfly plate shift fork and shifting pin, the butterfly plate has butterfly plate sealing part and transmission connecting portion, set up the shifting fork groove on the transmission connecting portion, the butterfly plate shift fork sets up in the shifting fork inslot, set up interface channel on the both sides cell wall in shifting fork groove, the butterfly plate shift fork corresponds interface channel and sets up the connecting hole, set up the valve shaft between connecting hole and the interface channel, the butterfly plate shift fork passes through the transmission connecting portion swing joint of valve shaft and butterfly plate.
Preferably, one end, far away from the butterfly plate, of the butterfly plate shifting fork is provided with a connection movable groove, one end, extending into the valve cavity, of the transmission shaft is provided with a jack, one end of the shifting pin extends into the jack and is connected with the transmission shaft, the other end of the shifting pin extends into the connection movable groove, and the shifting pin reciprocates in the connection movable groove through the transmission shaft.
Preferably, the butterfly plate shift fork has connecting portion and branching portion, branching portion extends to both sides by connecting portion and forms, form into the slot between the branching portion, connect the movable groove and correspond the setting on both sides branch portion, the both ends of dialling the round pin stretch into the movable connection groove that corresponds and be connected with the shift fork, the transmission shaft has the one end of jack and stretches into branch slot.
Preferably, a neck passage is formed in the neck, the transmission shaft penetrates through the neck passage and extends into the valve cavity, a corrugated pipe assembly is arranged on the part of the transmission shaft located at the neck passage and comprises a corrugated pipe and a corrugated pipe seat, the corrugated pipe seat is arranged on one side of the neck passage close to the valve cavity, the corrugated pipe sleeve is arranged on the part of the transmission shaft located at the neck passage, the top end of the corrugated pipe is connected with the transmission shaft, the bottom end of the corrugated pipe is connected with the corrugated pipe seat, a through hole is formed in the corrugated pipe seat, and a through hole at one end of the transmission shaft extends into the valve cavity.
Preferably, a valve seat is arranged in the valve body, the valve seat is arranged in an inclined mode, and the inclination angle of the valve seat is 20 degrees.
The utility model has the beneficial effects that: according to the utility model, the transmission shaft and the shifting pin are driven to do vertical linear motion through the rotary motion of the actuator; the shifting pin drives a butterfly plate shifting fork on the butterfly plate to drive the butterfly plate to rotate around the valve shaft, so that the butterfly valve is opened and closed, the traditional valve shaft torsion transmission torque of the butterfly valve is converted into the driving rod linear motion transmission torque, the moment of an actuating mechanism is greatly reduced, and the valve is higher in economy; one end of the corrugated pipe is fixedly sealed on the transmission shaft, the other end of the corrugated pipe is fixedly sealed with the corrugated pipe seat, the valve body and the corrugated pipe seat are sealed by a gasket (not shown), the transmission shaft moves linearly up and down, the corrugated pipe only stretches and does not rotate, and static sealing is completely realized among the transmission shaft, the corrugated pipe seat and the valve body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of the underside of the fully closed condition of the present invention;
FIG. 2 is a cross-sectional view of the underside of the present invention in a fully open position;
FIG. 3 is a front view of the present invention;
FIG. 4 is a schematic view of the connection movement of a shifting fork, a shifting pin and a driving rod of the butterfly plate;
FIG. 5 is a schematic view of the connection between the transmission fork and the butterfly plate according to the present invention.
Reference numerals:
1. the valve comprises a valve body, 2, a valve cavity, 3, a butterfly plate, 4, a neck, 5, an actuator, 6, a transmission shaft, 7, a transmission shifting fork, 8, a butterfly plate shifting fork, 9, a shifting pin, 10, a butterfly plate sealing part, 11, a transmission connecting part, 12, a shifting fork groove, 13, a connecting passage, 14, a connecting hole, 15, a valve shaft, 16, a connecting movable groove, 17, a jack, 18, a connecting part, 19, a fork part, 20, a valve seat, 21, a neck passage, 22, a corrugated pipe, 23, a corrugated pipe seat, 24 and a packing gland system.
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.
The utility model will be further described with reference to the accompanying drawings.
The utility model provides the following technical scheme:
as shown in the accompanying drawings 1-5, the utility model discloses a bellows sealing four-eccentric butterfly valve, which comprises a valve body 1, wherein a valve cavity 2 is formed in the valve body 1, a butterfly plate 3 is arranged in the valve cavity 2, the valve body 1 is provided with a neck 4, an actuator 5 is arranged on the valve body 1, the actuator 5 is provided with a transmission shaft 6, one end of the transmission shaft 6 penetrates through the neck 4 and extends into the valve cavity 2, a transmission shifting fork 7 is arranged at one end of the transmission shaft 6 extending into the valve cavity 2, one end of the transmission shifting fork 7 is movably connected with the transmission shaft 6, the other end of the transmission shifting fork is connected with the butterfly plate 3, and the actuator 5 drives the transmission shifting fork 7 through the transmission shaft 6 to enable the butterfly plate 3 to be opened and closed. Specifically, the butterfly plate 3 is driven to be opened and closed by the transmission valve rod instead of being driven by the transmission shifting fork 7, and the actuator 5 rotates to drive the transmission shaft 6 and the shifting pin 9 to do vertical linear motion; the shifting pin 9 drives the butterfly plate shifting fork 8 on the butterfly plate 3 to drive the butterfly plate 3 to rotate around the valve shaft 15, so that the butterfly valve is opened and closed, the traditional valve shaft 15 of the butterfly valve can be turned into driving rod linear motion transmission torque, the torque of an actuating mechanism is greatly reduced, and the valve economy is higher.
Further, transmission shift fork 7 includes butterfly plate shift fork 8 and shifting pin 9, butterfly plate 3 has butterfly plate sealing portion 10 and transmission connecting portion 11, set up shifting fork groove 12 on the transmission connecting portion 11, butterfly plate shift fork 8 sets up in shifting fork groove 12, set up interface channel 13 on the both sides cell wall of shifting fork groove 12, butterfly plate shift fork 8 corresponds interface channel 13 and sets up connecting hole 14, set up valve shaft 15 between connecting hole 14 and the interface channel 13, butterfly plate shift fork 8 passes through valve shaft 15 and butterfly plate 3's transmission connecting portion 11 swing joint. Specifically, the one end that butterfly plate 3 was kept away from to butterfly plate shift fork 8 sets up the connection movable groove 16, the one end that transmission shaft 6 stretched into valve chamber 2 sets up jack 17, the one end of dialling round pin 9 stretches into jack 17 and is connected with transmission shaft 6, the other end of dialling round pin 9 stretches into and connects movable groove 16, it passes through transmission shaft 6 and is connecting reciprocating motion in movable groove 16 to dial round pin 9.
Further, the butterfly plate shifting fork 8 is provided with a connecting portion 18 and a branching portion 19, the branching portion 19 is formed by extending the connecting portion 18 to two sides, an inserting groove (not shown) is formed between the branching portions 19, the connecting movable grooves 16 are correspondingly arranged on the inserting portions on two sides, two ends of the shifting pin 9 extend into the corresponding connecting movable grooves 16 to be connected with the shifting fork, and one end, provided with the inserting hole 17, of the transmission shaft 6 extends into the inserting groove (not shown).
Further, form neck passageway 21 in the neck 4, transmission shaft 6 passes neck passageway 21 and stretches into in the valve pocket 2, transmission shaft 6 is located and sets up the bellows subassembly on the part of neck passageway 21, the bellows subassembly includes bellows 22 and bellows seat 23, bellows seat 23 is established in one side that neck passageway 21 is close to valve pocket 2, bellows 22 cover is established on transmission shaft 6 is located the part of neck passageway 21, the top and the transmission shaft 6 of bellows 22 are connected, the bottom and the bellows seat 23 of bellows 22 are connected, set up the through-hole on the bellows seat 23, the one end through-hole of transmission shaft 6 stretches into in the valve pocket 2. Specifically, one end of the bellows 22 is fixedly sealed on the transmission shaft 6, the other end of the bellows is fixedly sealed with the bellows seat 23, the valve body 1 and the bellows seat 23 are sealed by using a gasket (not shown), the transmission shaft 6 moves linearly up and down, the bellows 22 only stretches and does not rotate, and static sealing is completely realized among the transmission shaft 6, the bellows seat 23 and the valve body 1.
Furthermore, a packing gland system 24 is arranged on the static sealing device of the corrugated pipe 22 for sealing to form a two-way sealing system. Due to the special design of the double seal, even if the static seal corrugated pipe 22 is damaged, the dynamic seal packing gland system 24 can still ensure that the valve does not leak, and the safety performance of the valve seal is completely ensured.
Further, a valve seat 20 is arranged in the valve body 1, the valve seat 20 is arranged in an inclined manner, and the inclination angle of the valve seat 20 is 20 °. Specifically, the valve seat 20 structure which is inclined by 20 degrees enables the opening and closing stroke of the valve to be only 70 degrees, the opening and closing time is shorter, and the butterfly valve can cut off media more quickly.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a bellows seal four eccentric butterfly valve which characterized in that: the novel butterfly valve is characterized by comprising a valve body, a valve cavity is formed in the valve body, a butterfly plate is arranged in the valve cavity, a neck is arranged on the valve body, an actuator is arranged on the valve body, a transmission shaft is arranged on the actuator, one end of the transmission shaft penetrates through the neck and extends into the valve cavity, one end of the transmission shaft extends into the valve cavity and is provided with a transmission shifting fork, one end of the transmission shifting fork is movably connected with the transmission shaft, the other end of the transmission shifting fork is connected with the butterfly plate, and the actuator drives the transmission shifting fork through the transmission shaft to enable the butterfly plate to be switched.
2. The bellows seal four eccentric butterfly valve of claim 1, wherein: the butterfly plate sealing part is arranged on the transmission connecting part, a shifting fork groove is formed in the transmission connecting part, the butterfly plate shifting fork is arranged in the shifting fork groove, connecting channels are formed in the groove walls of the two sides of the shifting fork groove, the butterfly plate shifting fork corresponds to the connecting channels and is provided with a connecting hole, a valve shaft is arranged between the connecting hole and the connecting channels, and the butterfly plate shifting fork is movably connected with the transmission connecting part of the butterfly plate through the valve shaft.
3. The bellows seal four eccentric butterfly valve of claim 2, wherein: the butterfly plate shifting fork is characterized in that one end, far away from the butterfly plate, of the butterfly plate shifting fork is provided with a connecting movable groove, one end, extending into the valve cavity, of the transmission shaft is provided with an insertion hole, one end of the shifting pin extends into the insertion hole to be connected with the transmission shaft, the other end of the shifting pin extends into the connecting movable groove, and the shifting pin reciprocates in the connecting movable groove through the transmission shaft.
4. The bellows seal four eccentric butterfly valve of claim 3, wherein: the butterfly plate shifting fork is provided with a connecting portion and a branching portion, the branching portion is formed by extending the connecting portion to two sides, a slot is formed between the branching portions, a connecting movable slot is correspondingly arranged on the inserting portion of two sides, two ends of a shifting pin extend into corresponding movable connecting slots to be connected with the shifting fork, and one end of the transmission shaft with a jack extends into the slot.
5. The bellows seal four eccentric butterfly valve of claim 1, wherein: form the neck passageway in the neck, the transmission shaft passes the neck passageway and stretches into in the valve pocket, the transmission shaft sets up the bellows subassembly on the part that is located the neck passageway, the bellows subassembly includes bellows and bellows seat, the bellows seat is established in the one side that the neck passageway is close to the valve pocket, the bellows cover is established on the part that the transmission shaft is located the neck passageway, the top and the transmission shaft of bellows are connected, the bottom and the bellows seat of bellows are connected, set up the through-hole on the bellows seat, the one end through-hole of transmission shaft stretches into the valve pocket.
6. The bellows seal four eccentric butterfly valve of claim 1, wherein: set up the disk seat in the valve body, the disk seat slope sets up, the inclination of disk seat is 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121854132.2U CN215950412U (en) | 2021-08-09 | 2021-08-09 | Bellows sealing four eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121854132.2U CN215950412U (en) | 2021-08-09 | 2021-08-09 | Bellows sealing four eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215950412U true CN215950412U (en) | 2022-03-04 |
Family
ID=80435831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121854132.2U Active CN215950412U (en) | 2021-08-09 | 2021-08-09 | Bellows sealing four eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215950412U (en) |
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2021
- 2021-08-09 CN CN202121854132.2U patent/CN215950412U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000 south head, 810, sidaosan Road, Longwan Binhai Industrial Park (Longwan valve base), Wenzhou City, Zhejiang Province Patentee after: Beize Valve Group Co.,Ltd. Address before: 325000 south head, 810, sidaosan Road, Longwan Binhai Industrial Park (Longwan valve base), Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG BEIZE VALVE TECHNOLOGY CO.,LTD. |