CN212643569U - Bidirectional all-metal sealing butterfly valve with floating valve seat - Google Patents
Bidirectional all-metal sealing butterfly valve with floating valve seat Download PDFInfo
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- CN212643569U CN212643569U CN202021151849.6U CN202021151849U CN212643569U CN 212643569 U CN212643569 U CN 212643569U CN 202021151849 U CN202021151849 U CN 202021151849U CN 212643569 U CN212643569 U CN 212643569U
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Abstract
The utility model discloses a two-way all-metal sealed butterfly valve with a floatable valve seat, which comprises a valve body, a valve seat and a bearing, wherein a support is arranged on the valve body, a manual operating device is arranged on the support, an O-shaped sealing ring is arranged between the valve body and the valve seat, an adjusting washer is arranged on the right side of the valve seat, a plurality of spring grooves are formed in the adjusting washer, springs are arranged in the spring grooves, a connecting hole is formed in the right side of each spring groove, a four-open ring is arranged on the right side of the adjusting washer, a plurality of bolt holes are formed in the four-open ring, four-open ring bolts are arranged in the bolt holes, a water pressure hole is formed between every two adjacent bolt holes in the four-open ring, a valve rod is arranged in the bearing and is; the utility model relates to a two-way all-metal seal butterfly valve that disk seat can float has disk seat floating seal, reverse sealing stability is strong, the sealing washer damages the advantage that the probability is little.
Description
Technical Field
The utility model relates to a conveyer belt technical field especially relates to a two-way all-metal seal butterfly valve that disk seat can float.
Background
The butterfly valve has the advantages of simple structure, quick opening and closing, short and small structure and low cost, thereby being widely popularized and applied. The butterfly valve mainly comprises a valve body, a valve rod, a butterfly plate and a transmission mechanism, wherein a valve seat sealing surface matched with the butterfly plate sealing surface is arranged on the valve body, and the valve seat sealing surface has two structural forms of hard sealing and soft sealing. In order to reduce the opening and closing torque and improve the sealing specific pressure, a triple eccentric structure is generally adopted among a valve body, a valve rod and a butterfly plate of the butterfly valve. The structure mainly comprises a valve body, a valve seat, a valve rod, a valve plate, a support, a sealing ring, a rotating mechanism and the like, wherein the sealing surface of the valve plate deviates from the rotating center of the valve plate, the rotating center of the valve plate deviates from the center of the valve body, and the center of the involute-shaped sealing surface of the valve plate deviates from the rotating center of the valve plate. The three-eccentric butterfly valve has the main advantages of labor saving in opening and reduced abrasion.
However, in this triple offset butterfly valve, the seal ring is a soft and hard stacked seal ring fixed to the valve plate. When the valve plate is in a normally open state, the medium washes the front surface of the sealing surface form of the valve plate, and the soft sealing material in the metal sheet interlayer directly influences the sealing performance after being washed. And the valve seat is static seal, when the unit positive pressure between the valve plate and the valve seat is smaller than the pressure of the medium along with the increase of the pressure of the medium during the backflow of the medium, the seal begins to leak, and the requirement of reverse seal cannot be met.
The utility model discloses a solve above-mentioned problem, provide a two-way all metal seal butterfly valve that disk seat can float for solve present three eccentric formula butterfly valves can't satisfy reverse seal requirement, the fragile problem of sealing washer.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a bidirectional all-metal sealing butterfly valve with a floating valve seat so as to solve the problems that the conventional triple eccentric butterfly valve cannot meet the requirement of reverse sealing and a sealing ring is easy to damage in the background technology.
The invention is realized by the following technical scheme: the butterfly valve comprises a valve body, a valve seat and a bearing, wherein the valve body is provided with a support, the support is provided with a manual device, the manual device is arranged on the valve body through the support, an O-shaped sealing ring is arranged between the valve body and the valve seat, the right side of the valve seat is provided with an adjusting washer, the adjusting washer is internally provided with a plurality of spring grooves, springs are arranged in the spring grooves, the right side of each spring groove is provided with a connecting hole, the right side of the adjusting washer is provided with a four-open ring, a plurality of bolt holes are formed in the four-open ring, a four-open ring bolt is arranged in each bolt hole, a water pressure hole is formed between every two adjacent bolt holes on the four-open ring, a valve rod is arranged in the bearing and is rotatably connected with the manual device, a butterfly plate is arranged on the, the sealing ring is fastened on the butterfly plate through the pressure plate ring.
Furthermore, the water pressure holes and the connecting holes are through holes, and the water pressure holes correspond to the connecting holes one to one.
Further, the number of the O-shaped sealing rings is two.
Further, a valve seat installation groove is formed between the valve body and the adjusting gasket, and the width of the valve seat installation groove is larger than that of the valve seat.
Furthermore, a packing gland is arranged between the upper end of the valve body and the valve rod and is tightly installed on the valve body, and sealing packing is arranged in a sealed space defined by the valve body, the valve rod and the packing gland.
Furthermore, the edges of the sealing ring, the pressing plate ring and the butterfly plate jointly form a butterfly plate sealing surface, and the contact surface of the butterfly plate sealing surface and the valve seat is a conical surface.
Furthermore, a triple eccentric structure is adopted among the valve body, the valve rod and the butterfly plate.
The beneficial effects of the utility model reside in that: 1. the utility model relates to a two-way all-metal seal butterfly valve that disk seat can float, because the width of disk seat mounting groove is greater than the width of disk seat, so the disk seat is the dynamic seal state in the valve body, when the medium openly passes through, the butterfly plate is closed, the sealing washer receives butterfly plate thrust and the elasticity that the disk seat received the spring, the sealing washer forms conical surface seal structure with the disk seat, when the medium reverse side passes through, the sealing washer receives the butterfly plate to be injectd, the disk seat then receives the pressure of spring force and reverse medium, the sealing washer continues to form conical surface seal structure with the disk seat, and medium pressure is high more high, the better sealing effect, reach two-way.
2. The utility model relates to a two-way all-metal seal butterfly valve that disk seat can float makes for the metal sheet through setting up the sealing washer, makes the sealing washer receive the medium and erodees the back, keeps the leakproofness unchangeable, and stability is reliable.
3. The utility model relates to a two-way all-metal seal butterfly valve that disk seat can float is through setting water pressure hole and connecting hole are the through-hole, water pressure hole and connecting hole one-to-one make the reverse sealed formula of disk seat receive two kinds of thrust of spring and medium simultaneously, when medium pressure is low, provide thrust by the spring to the disk seat and guarantee to seal, when medium pressure is high, the medium provides stronger reverse thrust for the disk seat, guarantees sealed effect.
Drawings
FIG. 1 is a schematic view of the entire structure of embodiment 1;
FIG. 2 is a schematic view of part A of the structure of example 1;
FIG. 3 is a schematic structural view of part B of example 1;
FIG. 4 is a schematic view of the overall structure of a four-open loop according to embodiment 1;
fig. 5 is a top view of the whole structure of embodiment 1.
Wherein: 1. a valve body; 2. a valve stem; 3. a valve seat; 4. a seal ring; 5. a platen ring; 6. a butterfly plate; 7. opening a ring; 8. a four-open loop bolt; 9. an adjusting washer; 10. a spring; 11. an O-shaped sealing ring; 12. a bearing; 13. a support; 14. a packing gland; 15. a manual device; 16. bolt holes, 17, water pressure holes; 18 are connected to the holes.
Detailed Description
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that 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.
Example 1
As shown in fig. 1-5, a bidirectional all-metal sealed butterfly valve with a floating valve seat comprises a valve body 1, a valve seat 3 and a bearing 12, wherein a support 13 is arranged on the valve body 1, the support 13 is installed on the valve body 1 through bolts, a manual device 15 is arranged on the support 13, the manual device 15 is installed on the valve body 1 through the support 13, two O-shaped sealing rings 11 are arranged between the valve body 1 and the valve seat 3, the O-shaped sealing rings 11 provide sealing for a gap between the valve body 1 and the valve seat 3, an adjusting gasket 9 is arranged on the right side of the valve seat 3, a valve seat installation groove is formed between the valve body 1 and the adjusting gasket 9, the width of the valve seat installation groove is larger than that of the valve seat 3, so that the valve seat 3 forms a dynamic sealing state in the valve body 1, a plurality of spring grooves are formed in the adjusting gasket 9, and springs, the right side of the spring groove is provided with a connecting hole 18, the right side of an adjusting washer 9 is provided with a four-open ring 7, a plurality of bolt holes 16 are arranged in the four-open ring 7, four-open ring bolts 8 are arranged in the bolt holes 16, the four-open ring 7 is installed on the valve body 1 through the bolts 8, the valve body 3 is limited in the valve seat installation groove through the adjusting washer 9, water pressure holes 17 are formed between two adjacent bolt holes 16 on the four-open ring 7, the water pressure holes 17 and the connecting holes 18 are through holes, the water pressure holes 17 correspond to the connecting holes 18 one by one, when a medium passes through reversely, the medium enters the spring groove through the water pressure holes 17 and the connecting holes 18 to form reverse thrust on the valve seat 3, so that the valve seat 3 is reversely sealed and simultaneously receives two thrust of the spring 10 and the medium, when the medium pressure is low, the spring 10 provides thrust to, the sealing effect is ensured, the valve rod 2 is arranged in the bearing 12, the valve rod 2 is rotationally connected with the manual device 15, the butterfly plate 6 is arranged on the valve rod 2, the butterfly plate 6 is installed on the valve rod 2 through a pin key, the manual device 15 rotates the butterfly plate 6 through the valve rod 2, a triple eccentric structure is adopted among the valve body 1, the valve rod 2 and the butterfly plate 6, the triple eccentric structure has the advantages of simple structure and simplicity and convenience in operation, the sealing ring 4 is arranged on the butterfly plate 6, the sealing ring 4 is made of a metal plate, the butterfly plate 6 is provided with the pressure plate ring 5 on the right side of the sealing ring 4, the sealing ring 4 is fastened on the butterfly plate 6 through the pressure, the edge of clamp plate circle 5 and butterfly plate 6 constitutes the butterfly plate sealed face jointly, and the butterfly plate sealed face is the conical surface with the contact surface of disk seat 3, is equipped with gland 14 between the upper end of valve body 1 and valve rod 2, and gland 14 compresses tightly installs on valve body 1, is equipped with the sealing filler in the airtight space that valve body 1, valve rod 2 and gland 14 enclose.
The working principle is as follows: when the butterfly valve is used, the butterfly valve is arranged at a pipeline connection part, the valve rod 2 is driven to rotate in the valve body 1 through the manual device 15, the valve rod 2 drives the butterfly plate 6 to rotate to control the opening or closing of the butterfly valve, when the butterfly valve is opened, a medium can pass through the butterfly valve in a forward direction or a reverse direction, when the butterfly valve is closed, the butterfly plate 6 drives the sealing ring 4 to press the valve seat 3, the valve seat 3 and the sealing ring 4 form a sealing structure under the limiting action of the spring 10 and the O-shaped sealing ring 11, when the medium passes through in the reverse direction, along with the increase of the medium pressure, when the unit positive pressure between the butterfly plate 6 and the sliding valve seat 3 is smaller than the medium pressure, the butterfly plate 6 generates tiny elastic deformation due to the medium acting force and generates tiny position change along the direction of the medium acting force, the medium enters the spring groove through the water pressure hole 17 and the connecting hole 18 to form reverse thrust to the, spring 10 passes through elastic deformation, promotes disk seat 3 and remedies the elastic deformation of butterfly plate 6, when medium pressure is low, provides more thrust by spring 10 to disk seat 3 and guarantees sealedly, when medium pressure is high, the medium provides more thrust for disk seat 3, guarantees sealed effect, and medium pressure is big more, reverse sealed effect is better, at this in-process, sealing washer 4 that the metal sheet was made is not influenced by the medium erosion, and the damage probability is little, makes sealed effect stability more reliable.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. The utility model provides a two-way all-metal seal butterfly valve that disk seat can float which characterized in that: the valve comprises a valve body (1), a valve seat (3) and a bearing (12), wherein a support (13) is arranged on the valve body (1), a manual device (15) is arranged on the support (13), the manual device (15) is installed on the valve body (1) through the support (13), an O-shaped sealing ring (11) is arranged between the valve body (1) and the valve seat (3), an adjusting gasket (9) is arranged on the right side of the valve seat (3), a plurality of spring grooves are formed in the adjusting gasket (9), springs (10) are arranged in the spring grooves, a connecting hole (18) is formed in the right side of each spring groove, a four-ring opening (7) is arranged on the right side of the adjusting gasket (9), a plurality of bolt holes (16) are formed in the four-ring opening (7), four-ring opening bolts (8) are arranged in the bolt holes (16), water pressure holes (17) are formed in two adjacent, be equipped with valve rod (2) in bearing (12), valve rod (2) are rotated with hand device (15) and are connected, be equipped with butterfly plate (6) on valve rod (2), be equipped with sealing washer (4) on butterfly plate (6), sealing washer (4) are made for the metal sheet, the right side that butterfly plate (6) are located sealing washer (4) is equipped with clamp plate circle (5), sealing washer (4) are through clamp plate circle (5) fastening on butterfly plate (6).
2. The bi-directional all-metal sealed butterfly valve of claim 1, wherein said valve seat is floating: the water pressure holes (17) and the connecting holes (18) are through holes, and the water pressure holes (17) correspond to the connecting holes (18) one to one.
3. The bi-directional all-metal sealed butterfly valve of claim 1, wherein said valve seat is floating: the number of the O-shaped sealing rings (11) is two.
4. The bi-directional all-metal sealed butterfly valve of claim 1, wherein said valve seat is floating: the valve seat is characterized in that a valve seat mounting groove is formed between the valve body (1) and the adjusting gasket (9), and the width of the valve seat mounting groove is larger than that of the valve seat (3).
5. The bi-directional all-metal sealed butterfly valve of claim 1, wherein said valve seat is floating: a packing gland (14) is arranged between the upper end of the valve body (1) and the valve rod (2), the packing gland (14) is tightly pressed and installed on the valve body (1), and sealing packing is arranged in a sealed space surrounded by the valve body (1), the valve rod (2) and the packing gland (14).
6. The bi-directional all-metal sealed butterfly valve of claim 1, wherein said valve seat is floating: the edge of the sealing ring (4), the edge of the pressure plate ring (5) and the edge of the butterfly plate (6) jointly form a butterfly plate sealing surface, and the contact surface of the butterfly plate sealing surface and the valve seat (3) is a conical surface.
7. The bi-directional all-metal sealed butterfly valve of claim 1, wherein said valve seat is floating: and a triple eccentric structure is adopted among the valve body (1), the valve rod (2) and the butterfly plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021151849.6U CN212643569U (en) | 2020-06-19 | 2020-06-19 | Bidirectional all-metal sealing butterfly valve with floating valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021151849.6U CN212643569U (en) | 2020-06-19 | 2020-06-19 | Bidirectional all-metal sealing butterfly valve with floating valve seat |
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| Publication Number | Publication Date |
|---|---|
| CN212643569U true CN212643569U (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021151849.6U Active CN212643569U (en) | 2020-06-19 | 2020-06-19 | Bidirectional all-metal sealing butterfly valve with floating valve seat |
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| Country | Link |
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| CN (1) | CN212643569U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932019A (en) * | 2021-10-16 | 2022-01-14 | 东宝阀门有限公司 | High-pressure self-sealing butterfly valve |
| CN114198512A (en) * | 2022-01-15 | 2022-03-18 | 浙江超越阀门有限公司 | Double-eccentric bidirectional high-temperature butterfly valve with efficient sealing effect |
-
2020
- 2020-06-19 CN CN202021151849.6U patent/CN212643569U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932019A (en) * | 2021-10-16 | 2022-01-14 | 东宝阀门有限公司 | High-pressure self-sealing butterfly valve |
| CN114198512A (en) * | 2022-01-15 | 2022-03-18 | 浙江超越阀门有限公司 | Double-eccentric bidirectional high-temperature butterfly valve with efficient sealing effect |
| CN114198512B (en) * | 2022-01-15 | 2022-07-29 | 浙江超越阀门有限公司 | Double-eccentric bidirectional high-temperature butterfly valve with efficient sealing effect |
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