CN211371314U - High-temperature-resistant bidirectional hard seal butterfly valve - Google Patents
High-temperature-resistant bidirectional hard seal butterfly valve Download PDFInfo
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- CN211371314U CN211371314U CN201922169338.0U CN201922169338U CN211371314U CN 211371314 U CN211371314 U CN 211371314U CN 201922169338 U CN201922169338 U CN 201922169338U CN 211371314 U CN211371314 U CN 211371314U
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Abstract
The utility model discloses a high temperature resistant bidirectional hard seal butterfly valve, which comprises a valve body, a butterfly plate and a valve rod; the valve body is provided with an inner cavity, and the valve rod penetrates through the upper part of the valve body and is inserted into the lower part of the valve body through the inner cavity; the butterfly plate is fixedly arranged on the valve rod; a movable valve seat capable of moving and three open rings for limiting the moving range of the valve seat are arranged in the inner cavity, the inner wall of the valve body is provided with a ring groove movably connected with the three open rings, and the outer ring of the three open rings is arranged in the ring groove; and a second sealing ring matched with the movable valve seat is arranged on the butterfly plate. The utility model discloses a design of portable disk seat to carry out the displacement through three rings of division and injecing to the disk seat. The valve seat can move along with the medium to realize sealing compensation on the second sealing ring on the butterfly plate, so that the effect of bidirectional sealing is achieved. The utility model discloses rational in infrastructure, sealing performance is good, and manufacturing process is simple, and long service life can adapt to operating modes such as high temperature and low temperature, high pressure and low pressure, can wide application in pipeline valve field.
Description
Technical Field
The utility model relates to a pipeline valve field, concretely relates to high temperature resistant two-way butterfly valve sealed firmly.
Background
The butterfly valve has the characteristics of good sealing performance, small volume, light weight, convenience in operation and maintenance and the like, and is very widely applied; for example, the device is mainly used for regulating the flow and connecting and cutting off pipeline media on industrial pipelines of petrochemical industry, power stations, urban heating, water supply and drainage, municipal construction and the like. The movable valve seat and the inner wall of the valve body of the traditional double-eccentric and triple-eccentric butterfly valve are sealed by an O-shaped ring, the O-shaped ring is made of rubber, the continuous use temperature is lower than 120 ℃, and the requirement of high-temperature bidirectional sealing cannot be met.
Therefore, the market urgently needs to develop a hard seal butterfly valve with high temperature resistance and good bidirectional sealing performance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technical defect, provide a novel two-way hard seal butterfly valve of high temperature resistance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-temperature resistant bidirectional hard seal butterfly valve comprises a valve body, a valve rod, a butterfly plate and a worm gear case. The valve body is provided with an inner cavity, the valve rod penetrates through the upper part of the valve body and is inserted into the lower part of the valve body through the inner cavity, and the upper part of the valve rod is connected with the worm gear case; the butterfly plate is established on the valve rod, be equipped with the three division rings of disk seat and restriction disk seat displacement range that can remove in the inner chamber, disk seat and three division ring fixed connection, the disk seat is close to three division ring positions and is equipped with the recess of placing first sealing washer, first sealing washer is located in the recess, the valve body inner wall is equipped with and opens the annular of ring swing joint, three division ring outer loop locate in the annular, the disk seat inner ring is the conical surface, the pressure plate circle has set firmly on the butterfly plate, be equipped with the second sealing washer between butterfly plate and pressure plate circle, second sealing washer external loop crimping is on the disk seat inner ring to it is sealed vice with the disk seat formation.
As an improvement, the three openings are annularly provided with a protruding part for extruding the first sealing ring, the valve seat is fixedly connected with the three openings and extrudes the first sealing ring, and the first sealing ring is extruded and deformed to form a sealing pair with the inner wall of the valve body.
As an improvement, the valve seat and the three-opening ring are provided with screw holes, the valve seat and the three-opening ring are connected through bolts, the butterfly plate and the pressure plate ring are provided with screw holes, and the butterfly plate and the pressure plate ring are connected through bolts.
As an improvement, the width of the ring groove is 1-2 mm larger than the thickness of the three open rings, and the three open rings move in the ring groove along the axial direction.
As an improvement, the first sealing ring is a flexible graphite ring or a flexible graphite packing, and the second sealing ring is a metal sealing ring.
As an improvement, a belleville spring is arranged at the joint of the three open rings and the bolt.
As an improvement, a baffle is further arranged between the valve seat and the three opening rings, the baffle is fixedly connected with the valve seat, and the first sealing ring is pressed between the baffle and the valve seat.
As an improvement, the three open rings are fixedly arranged in the ring grooves and play a role in limiting and supporting.
As an improvement, the baffle is provided with a second protruding part for extruding the first sealing ring, the baffle is fixedly connected with the valve seat and extrudes the first sealing ring, and the first sealing ring is extruded and deformed and forms a sealing pair with the inner wall of the valve body.
As an improvement, the valve seat and the baffle are both provided with screw holes and connected through bolts.
The utility model has the advantages that:
the utility model discloses a design of portable disk seat to limit the disk seat amount of movement through three ring-opening. The second sealing ring on the butterfly plate is sealed and compensated through the movement of the valve seat, so that the effect of bidirectional sealing is achieved. The three-opening ring is easy to disassemble and assemble, and is convenient to disassemble and maintain the butterfly valve. The utility model discloses rational in infrastructure, the leakproofness good, easily dismantle, be particularly suitable for high temperature high pressure and require two way seal pipe-line system.
Drawings
FIG. 1 is a block diagram of a high temperature resistant bi-directional hard seal butterfly valve;
FIG. 2 is an enlarged structural view of a butterfly plate I of a high-temperature resistant bidirectional hard seal butterfly valve;
FIG. 3 is an enlarged structural view of a butterfly plate at the second side of a high temperature resistant bidirectional hard seal butterfly valve;
the figures are labeled as follows:
1-a valve body, 11-an inner cavity, 12-an annular groove, 2-a butterfly plate, 3-a valve rod, 4-a worm gear box, 5-a valve seat, 51-a groove, 6-a three-open ring, 61-a belleville spring, 62-a bulge, 7-a first sealing ring, 8-a pressing plate ring, 9-a second sealing ring, 10-a baffle plate and 101-a second bulge.
Detailed Description
The present invention will be described in detail and specifically with reference to the following examples so as to provide a better understanding of the present invention, but the following examples do not limit the scope of the present invention.
Example 1
The utility model provides a high temperature resistant bidirectional hard seal butterfly valve, which comprises a valve body 1, a butterfly plate 2, a valve rod 3 and a worm gear case 4; the valve body 1 is provided with an inner cavity 11 for accommodating the butterfly plate 2, and the valve rod 3 passes through the upper part of the valve body 1, passes through the inner cavity 11 and is inserted into the lower part of the valve body; the butterfly plate 2 is arranged in the inner cavity 11 and connected with the valve rod 3 through a cylindrical pin, and the upper part of the valve rod 3 is connected with the worm gear case 4.
Fig. 2 is a structural view of the right side of the butterfly plate 2. A movable valve seat 5 and a three-opening ring 6 for limiting the moving range of the valve seat 5 are arranged in the inner cavity 11, and the valve seat 5 is provided with a groove 51 for accommodating the first sealing ring 8; the valve seat 5 and the three-opening ring 6 are provided with screw holes, and the valve seat 5 and the three-opening ring 6 are connected through bolts; the three-opening ring 6 is provided with a convex part 62 for extruding the first sealing ring 7, and the valve seat 5 is connected with the three-opening ring 6 and then extrudes the first sealing ring 7; the first sealing ring 7 is extruded to deform and then extrudes the inner wall of the valve body 1, and forms a sealing pair with the inner wall of the valve body 1; a butterfly spring 61 is arranged in a screw hole of the three open rings 6, and when the air temperature changes, the extrusion force of the three open rings 6 on the first sealing ring 7 can be kept to achieve sealing.
The inner wall of the valve body 1 is provided with a ring groove 12 movably connected with the three-opening ring 6, and the outer side of the three-opening ring 6 is arranged in the ring groove 12; the width of the ring groove 12 is 2mm larger than the thickness of the three-opening ring 6, and the three-opening ring 6 can move back and forth in the ring groove 12 along the axial direction.
A pressure plate ring 8 is arranged on the butterfly plate 2, and a second sealing ring 9 is arranged between the butterfly plate 2 and the pressure plate ring 8; the inner ring of the valve seat 5 is a conical surface, and the second sealing ring 9 is pressed on the inner ring of the valve seat 5 and forms a sealing pair with the valve seat 5; the first sealing ring 7 is a flexible graphite ring, and the second sealing ring 9 is a metal sealing ring.
When the pipeline medium flows from the left side to the right side of the butterfly valve, the outer conical surface of the second sealing ring 9 is pressed on the inner ring of the valve seat 5 under the action of the medium, so that the positive sealing effect is achieved. When the pipeline medium flows from the right side to the left side of the butterfly valve, the valve seat 5 and the three-opening ring 6 move leftwards due to the acting force of the medium, and the inner ring of the valve seat 5 is tightly pressed with the second sealing ring 9 to form a sealing pair to realize reverse sealing.
Example 2
The utility model provides a high temperature resistant bidirectional hard seal butterfly valve, which comprises a valve body 1, a butterfly plate 2, a valve rod 3 and a worm gear case 4; the valve body 1 is provided with an inner cavity 11 for accommodating the butterfly plate 2, and the valve rod 3 passes through the upper part of the valve body 1, passes through the inner cavity 11 and is inserted into the lower part of the valve body; the butterfly plate 2 is arranged in the inner cavity 11 and connected with the valve rod 3 through a cylindrical pin, and the upper part of the valve rod 3 is connected with the worm gear case 4.
Fig. 3 is a structural view of the right side of the butterfly plate 2. A valve seat 5 capable of moving left and right and a three-opening ring 6 for limiting the movement of the valve seat 5 are arranged in the inner cavity 11, a baffle plate 10 is further arranged between the valve seat 5 and the three-opening ring 6, a groove 51 for accommodating a first sealing ring 7 is arranged at the position, close to the baffle plate 10, of the valve seat 5, screw holes are formed in the valve seat 5 and the baffle plate 10, and the valve seat 5 is connected with the baffle plate 10 through bolts; the baffle 10 is provided with a second protruding part 101 for extruding the first sealing ring 7, the valve seat 5 and the baffle 10 are connected to extrude the first sealing ring 7, and the first sealing ring 7 is extruded on the inner wall of the valve body 1 after being extruded and deformed, and forms a sealing pair with the inner wall of the valve body 1.
The inner wall of the valve body 1 is provided with a ring groove 12 connected with the three-opening ring 6, and the outer ring of the three-opening ring 6 is fixed in the ring groove 12 and cannot move left and right; the three-open ring 6 plays the role of limiting and supporting.
A pressure plate ring 8 is arranged on the butterfly plate 2, and a second sealing ring 9 is arranged between the butterfly plate 2 and the pressure plate ring 8; the inner ring of the valve seat 5 is a conical surface, and the second sealing ring 9 is pressed on the inner ring of the valve seat 5 and forms a sealing pair with the valve seat 5; the first sealing ring 7 is a graphite packing, and the second sealing ring 9 is a metal sealing ring.
When the pipeline medium flows from the left side to the right side of the butterfly valve, the outer conical surface of the second sealing ring 9 is pressed on the inner ring of the valve seat 5 under the action of the medium, so that the positive sealing effect is achieved. When the pipeline medium flows from the right side to the left side of the butterfly valve, the valve seat 5 and the baffle 10 move leftwards due to the acting force of the medium, and the inner ring of the valve seat 5 is tightly pressed with the second sealing ring 9 to form a sealing pair, so that reverse sealing is realized.
The utility model discloses a design of portable disk seat to carry out the displacement through three rings of division and injecing to the disk seat. The second sealing ring 9 is sealed and compensated by the movement of the valve seat, so that the effect of bidirectional sealing is achieved. The three-opening ring is easy to disassemble and assemble, and is convenient to disassemble and maintain the butterfly valve. First sealing washer 7 adopts flexible graphite ring or flexible graphite packing, can tolerate the highly compressed operational environment of high temperature, has prolonged the life of butterfly valve. The utility model discloses characteristics such as rational in infrastructure, manufacturing process are simple, sealing performance is good will be by wide application in valve pipeline field.
The present invention has been described in detail with reference to the specific embodiments thereof, which are provided by way of example only, and the present invention is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Therefore, the equivalent changes and modifications without departing from the spirit and scope of the present invention should be covered by the scope of the present invention.
Claims (10)
1. A high-temperature resistant bidirectional hard seal butterfly valve comprises a valve body, a valve rod, a butterfly plate and a worm gear case; the valve body is provided with an inner cavity, the valve rod penetrates through the upper part of the valve body and is inserted into the lower part of the valve body through the inner cavity, and the upper part of the valve rod is connected with the worm gear case; the butterfly plate is arranged on the valve rod, and is characterized in that a movable valve seat and three-opening rings for limiting the movement range of the valve seat are arranged in the inner cavity, and the valve seat is fixedly connected with the three-opening rings and extrudes the first sealing ring; a groove for placing a first sealing ring is formed in the position, close to the three-opening ring, of the valve seat, the first sealing ring is arranged in the groove, a ring groove movably connected with the three-opening ring is formed in the inner wall of the valve body, and the three-opening ring is arranged in the ring groove; the inner ring of the valve seat is a conical surface, a pressure plate ring is fixedly arranged on the butterfly plate, a second sealing ring is arranged between the butterfly plate and the pressure plate ring, and the outer ring of the second sealing ring is in compression joint with the inner ring of the valve seat and forms a sealing pair with the valve seat.
2. The high-temperature-resistant bidirectional hard seal butterfly valve according to claim 1, wherein the three open rings are provided with a protrusion for extruding a first seal ring, and the first seal ring is extruded and deformed to form a seal pair with the inner wall of the valve body.
3. The high-temperature-resistant bidirectional hard seal butterfly valve according to claim 1, wherein the valve seat and the three-opening ring are provided with screw holes, the valve seat and the three-opening ring are connected through bolts, the butterfly plate and the pressure plate ring are provided with screw holes, and the butterfly plate and the pressure plate ring are connected through bolts.
4. The high-temperature resistant bidirectional hard seal butterfly valve according to claim 1, wherein the width of the ring groove is 1-2 mm larger than the thickness of the three-open ring, and the three-open ring moves in the ring groove in the axial direction.
5. The high temperature resistant bi-directional hard seal butterfly valve of claim 1, wherein the first seal ring is a flexible graphite ring or a flexible graphite packing, and the second seal ring is a metal seal ring.
6. The high temperature resistant two-way hard seal butterfly valve of claim 3, wherein a belleville spring is provided at the connection of the three open rings and the bolt.
7. The high-temperature-resistant bidirectional hard seal butterfly valve according to claim 1, wherein a baffle is further arranged between the valve seat and the three-way ring, the baffle is fixedly connected with the valve seat, and the first seal ring is in press-contact with the position between the baffle and the valve seat.
8. The high temperature resistant bidirectional hard seal butterfly valve of claim 7, wherein the three-open ring is fixed in the ring groove to perform limiting and supporting functions.
9. The butterfly valve of claim 8, wherein the baffle has a second protrusion for pressing the first seal ring, the baffle is fixedly connected to the valve seat and presses the first seal ring, and the first seal ring is deformed by the pressing and forms a sealing pair with the inner wall of the valve body.
10. The butterfly valve of claim 7, wherein the valve seat and the retainer have screw holes, and the valve seat and the retainer are connected by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922169338.0U CN211371314U (en) | 2019-12-06 | 2019-12-06 | High-temperature-resistant bidirectional hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922169338.0U CN211371314U (en) | 2019-12-06 | 2019-12-06 | High-temperature-resistant bidirectional hard seal butterfly valve |
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| Publication Number | Publication Date |
|---|---|
| CN211371314U true CN211371314U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922169338.0U Active CN211371314U (en) | 2019-12-06 | 2019-12-06 | High-temperature-resistant bidirectional hard seal butterfly valve |
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| Country | Link |
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| CN (1) | CN211371314U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032325A (en) * | 2020-09-24 | 2020-12-04 | 李祥庆 | Bidirectional sealing butterfly valve |
| CN112879572A (en) * | 2021-01-28 | 2021-06-01 | 浙江中信阀门有限公司 | Compact upper assembling type detachable online maintenance ultralow-temperature 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 |
-
2019
- 2019-12-06 CN CN201922169338.0U patent/CN211371314U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032325A (en) * | 2020-09-24 | 2020-12-04 | 李祥庆 | Bidirectional sealing butterfly valve |
| CN112879572A (en) * | 2021-01-28 | 2021-06-01 | 浙江中信阀门有限公司 | Compact upper assembling type detachable online maintenance ultralow-temperature 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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