CN209762276U - High-performance three-eccentric bidirectional pure metal hard seal butterfly valve - Google Patents
High-performance three-eccentric bidirectional pure metal hard seal butterfly valve Download PDFInfo
- Publication number
- CN209762276U CN209762276U CN201920228378.5U CN201920228378U CN209762276U CN 209762276 U CN209762276 U CN 209762276U CN 201920228378 U CN201920228378 U CN 201920228378U CN 209762276 U CN209762276 U CN 209762276U
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- sealing ring
- valve
- valve seat
- pure metal
- butterfly plate
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Abstract
The utility model discloses a high-performance three-eccentric bidirectional pure metal hard seal butterfly valve, which comprises a valve body, a sliding valve seat, a valve rod and a butterfly plate, wherein the valve rod passes through the valve body and is rotationally arranged on the valve body; a sealing ring groove is formed in the outer ring of the sliding valve seat, which is far away from one end of the valve rod, and a self-sealing ring is sleeved in the sealing ring groove. When the valve is in a reverse flow state, along with the increase of reverse medium pressure, when the unit positive pressure between the butterfly plate and the sliding valve seat is smaller than the medium pressure, the elastic potential energy stored by the spring in contact with the adjusting pad after loading pushes the adjusting pad towards the valve rod, the pretightening force of the contact surface of the butterfly plate and the sliding valve seat is compensated, the automatic compensation effect is achieved, and the reverse sealing effect of the valve is better; and through setting up mobilizable slide valve seat, can automatically regulated position when slide valve seat and butterfly plate contact, prevent the wearing and tearing of slide valve seat and butterfly plate, increase life.
Description
The technical field is as follows:
the utility model relates to a butterfly valve field, concretely relates to two-way pure metal butterfly valve sealed firmly of high performance triple offset.
background art:
in the use process of the existing three-eccentric metal hard seal butterfly valve, because the butterfly plate and the valve seat need to be contacted in the opening and closing process to ensure sealing, the medium can provide great pressure for the valve plate in the medium transportation process, and the butterfly plate and the valve seat can generate certain abrasion in the contact process, so that the size of the butterfly plate and the valve seat after abrasion cannot meet the sealing requirement, the valve sealing performance is poor, and the valve rod can generate certain degree of elastic deformation under the pressure of the medium to increase the abrasion of the butterfly plate and the valve seat; under the pressure of the reverse medium, the sealing between the movable valve seat and the valve body is usually caused to be problematic, and the reverse sealing performance is difficult to ensure.
The utility model has the following contents:
an object of the utility model is to provide a can realize sealed high performance three eccentric two-way pure metal butterfly valve sealed firmly of two-way disk seat automatic compensation.
The utility model discloses by following technical scheme implement:
A high-performance triple-eccentric bidirectional pure metal hard seal butterfly valve comprises a valve body, a sliding valve seat, a valve rod and a butterfly plate, wherein the valve rod penetrates through the valve body and is rotatably arranged on the valve body;
a sealing ring groove is formed in the outer ring of the sliding valve seat, a self-sealing ring is sleeved in the sealing ring groove, and the outer ring of the self-sealing ring is in sliding contact with the valve body;
An adjusting pad is arranged at one end of the self-sealing ring, which is far away from the sliding valve seat, and a gland which is fixed on the outer side of the valve body through a screw is arranged at one end of the adjusting pad, which is far away from the self-sealing ring;
an annular groove is formed in one end, close to the adjusting pad, of the pressing cover, a plurality of springs are fixed in the annular groove, and one end, located on the outer side of the annular groove, of each spring is in contact with the adjusting pad;
The outer ring of the butterfly plate is fixed with a pure metal sealing ring, and the outer ring of the pure metal sealing ring and the inner ring of the sliding valve seat are eccentric conical surfaces matched with each other.
Preferably, a metal sealing ring groove is formed in the side face of the butterfly plate, the pure metal sealing ring is sleeved in the metal sealing ring groove, and a butterfly plate pressing plate ring fixed on the butterfly plate through a screw is arranged on the side face of the pure metal sealing ring.
Preferably, the pure metal sealing ring is a pure metal surfacing sealing ring.
preferably, one end of the adjusting pad close to the gland is provided with a plurality of blind holes, two ends of each spring are respectively fixed with a baffle, and the two baffles on each spring are respectively in movable contact with the annular groove and the blind holes corresponding to the springs.
The utility model has the advantages that: when the valve is in a reverse flow state, along with the increase of reverse medium pressure, when the unit positive pressure between the butterfly plate and the sliding valve seat is smaller than the medium pressure, the elastic potential energy stored by the spring in contact with the adjusting pad after loading pushes the adjusting pad towards the valve rod, so that the self-sealing ring is tightly attached to the sliding valve seat, the sealing performance of the outer ring of the sliding valve seat is ensured, meanwhile, the self-sealing ring pushes the sliding valve seat to seal between the sliding valve seat and the butterfly plate, the inner ring and the outer ring of the sliding valve seat are ensured to realize better sealing effect, the reverse sealing effect of the valve is better, and the bidirectional sealing is realized; the sliding valve seat is arranged movably, so that the position can be automatically adjusted when the sliding valve seat is contacted with the butterfly plate, the sliding valve seat and the butterfly plate are prevented from being abraded, and the service life is prolonged; by arranging the detachable gland, the self-sealing ring, the adjusting pad, the spring and the sliding valve seat can be replaced, and the maintenance cost is saved; by arranging the blind hole, the spring is in contact with the blind hole, and the acting force of the spring is applied to the blind hole when reverse sealing is carried out, so that uneven surface abrasion of the adjusting pad is avoided, and deflection caused by uneven stress of the adjusting pad and sealing failure caused by rotation are prevented; the baffle is used for replacing a spring to directly contact the annular groove and the blind hole, so that abrasion of the annular groove and the blind hole is effectively avoided.
Description of the drawings:
fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a partial enlarged view A of FIG. 1;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 4 is a partial enlarged view B of FIG. 3;
Fig. 5 is a schematic view of the contact between the gland and the adjusting pad of the present invention.
In the figure: the valve comprises a valve body 1, a sliding valve seat 2, a valve rod 3, a butterfly plate 4, a sealing ring groove 5, a self-sealing ring 6, an adjusting pad 7, a gland 8, an annular groove 9, a spring 10, a pure metal sealing ring 11, a metal sealing ring groove 12, a butterfly plate pressure plate ring 13, a blind hole 14 and a baffle plate 15.
the specific implementation mode is as follows:
Example 1: as shown in fig. 1 and 2, a high-performance triple-eccentric bidirectional pure metal hard seal butterfly valve comprises a valve body 1, a sliding valve seat 2, a valve rod 3 and a butterfly plate 4, wherein the valve rod 3 penetrates through the valve body 1 and is rotatably arranged on the valve body 1, the sliding valve seat 2 is arranged in the valve body 1, the butterfly plate 4 matched with the sliding valve seat 2 is fixed on the valve rod 3, and the sliding valve seat 2 is slidably arranged in the valve body 1;
The outer ring of one end, away from the valve rod 3, of the sliding valve seat 2 is provided with a seal ring groove 5, a self-seal ring 6 is sleeved in the seal ring groove 5, the outer ring of the self-seal ring 6 is in sliding contact with the valve body 1, the self-seal ring 6 is made of stainless steel 304+ graphite composite, a seal surface formed between the self-seal ring 6 and the valve seat 1 is good in sealing effect, resistant to high temperature and corrosion and suitable for any environment; the movable sliding valve seat 2 is sealed by the self-sealing ring 6, so that poor sealing performance caused by the movable sliding valve seat 2 is effectively avoided, and the bidirectional sealing performance of the valve is ensured;
an annular gland 8 is fixed on an inner ring of the end part of the valve body 1 adjacent to the sliding valve seat 2 through a screw, an adjusting pad 7 is arranged inside the valve body 1 between the gland 8 and the sliding valve seat 2, an annular groove 9 is formed in one end, close to the adjusting pad 7, of the gland 8, a plurality of springs 10 are fixed in the annular groove 9, and one end, located on the outer side of the annular groove 9, of each spring 10 is in contact with the adjusting pad 7; the spring force of the spring 10 is directly applied to the self-sealing ring 6 by the adjusting pad 7.
A pure metal sealing ring 11 is fixed on the outer ring of the butterfly plate 4, and the outer ring of the pure metal sealing ring 11 and the inner ring of the sliding valve seat 2 are matched eccentric conical surfaces;
when the positive medium pressure is increased, the more tightly the conical surface of the butterfly plate and the conical surface of the sliding valve seat are extruded, the better the sealing effect between the sliding valve seat 2 and the butterfly plate 4 is, and meanwhile, the sliding valve seat 2 can push the self-sealing ring 6 to seal the valve seat 2 and the valve body 1 so as to prevent liquid from flowing through; when the valve is in a reverse flow state, the butterfly plate 4 is pressed towards the sliding valve seat 2 by the sealing between the butterfly plate 4 and the sliding valve seat 2 through the moment of the valve rod 3, along with the increase of reverse medium pressure, when the unit positive pressure between the butterfly plate 4 and the sliding valve seat 2 is smaller than the medium pressure, the elastic potential energy stored by the spring 10 in contact with the adjusting pad 7 after loading pushes the adjusting pad 7 towards the valve rod 3, so that the self-sealing ring 6 is tightly attached to the sliding valve seat 2, the sealing performance of the outer ring of the sliding valve seat 2 is ensured, meanwhile, the sliding valve seat 2 is pushed by the sealing ring 6, the sliding valve seat 2 is sealed with the butterfly plate 4, the pretightening force of the contact surface of the butterfly plate 4 and the sliding valve seat 2 is compensated, the automatic compensation effect is achieved, the better sealing effect of the inner ring and the outer ring of;
Because the sliding valve seat 2 can be radially expanded or positioned in the inner ring of the valve body 1, the sliding valve seat can be self-adjusted under various working conditions to keep the optimal sealing position; when the valve is closed, the butterfly plate 4 is contacted with the sliding valve seat 2, the sliding valve seat 2 is extruded outwards, when the valve is opened, the contact is immediately released, the sliding valve seat 2 recovers the original shape, the abrasion of the sliding valve seat 2 and the butterfly plate 4 is prevented, and the service life is prolonged;
Through setting up detachable gland 8, guarantee all can change from sealing washer 6, adjusting pad 7, spring 10 and sliding valve seat 2, practice thrift the cost of maintenance and maintenance.
metal seal ring groove 12 has been seted up to the side of butterfly plate 4, and in metal seal ring groove 12 was located to pure metal seal ring 11 cover, the side of pure metal seal ring 11 was equipped with butterfly plate clamp plate circle 13 on butterfly plate 4 through the fix with screw, through setting up detachable butterfly plate clamp plate circle 13, ensures that pure metal seal ring 11 can change, practices thrift the cost of maintenance and maintenance.
The pure metal sealing ring 11 is a pure metal low-carbon steel STL12 surfacing sealing ring, the STL12 surfacing sealing ring is wear-resistant, not easy to damage and high-temperature resistant, and the requirement of zero sealing leakage can be met under the condition of bidirectional pressure bearing.
The working principle is as follows: when the positive medium pressure is increased, the tighter the triple eccentric conical surface of the butterfly plate 4 is extruded with the triple eccentric conical surface of the sliding valve seat 2, the better the sealing effect is; when the valve seat is in a reverse flow state, the butterfly plate 4 is pressed towards the sliding valve seat 2 by the moment of the valve rod 3 of the seal between the butterfly plate 4 and the sliding valve seat 2, and along with the increase of reverse medium pressure, when the unit positive pressure between the butterfly plate 4 and the sliding valve seat 2 is smaller than the medium pressure, the elastic potential energy stored by the spring 10 in contact with the adjusting pad 7 after loading pushes the adjusting pad 7 towards the valve rod 3, the sliding valve seat 2 is pushed by the seal ring 6, and the pretightening force of the contact surface of the butterfly plate 4 and the sliding valve seat 2 is compensated; because the sliding valve seat 2 can be radially expanded or positioned in the inner ring of the valve body 1, the sliding valve seat can be self-adjusted under various working conditions to keep the optimal sealing position; when the valve is closed, the butterfly plate 4 is contacted with the sliding valve seat 2 to extrude the sliding valve seat 2 outwards, when the valve is opened, the contact is immediately released, and the sliding valve seat 2 restores the original shape.
Example 2: as shown in fig. 3 to 5, a plurality of blind holes 14 are formed in one end, close to a gland 8, of an adjusting pad 7, a baffle plate 15 is fixed to each of two ends of each spring 10, the two baffle plates 15 on each spring 10 are in movable contact with an annular groove 9 and the blind hole 14 corresponding to the spring 10, the springs 10 are in contact with the blind holes 14 through the blind holes 14, and when reverse sealing is performed, the acting force of the springs 10 is applied to the blind holes 14, so that uneven surface abrasion of the adjusting pad 7 is avoided, and sealing failure caused by offset and rotation due to uneven stress of the adjusting pad 7 is prevented; the baffle 15 is used for replacing the spring 10 to directly contact the annular groove 9 and the blind hole 14, and abrasion of the annular groove 9 and the blind hole 14 is effectively avoided.
the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. the utility model provides a two-way pure metal butterfly valve sealed firmly of high performance triple offset, includes valve body, slip disk seat, valve rod and butterfly plate, the valve rod passes the valve body and rotate the setting and be in on the valve body, be provided with in the valve body the slip disk seat, be fixed with on the valve rod with slip disk seat matched with the butterfly plate, its characterized in that: the sliding valve seat is arranged in the valve body in a sliding mode;
An outer ring of one end, far away from the valve rod, of the sliding valve seat is provided with a sealing ring groove, a self-sealing ring is sleeved in the sealing ring groove, and the outer ring of the self-sealing ring is in sliding contact with the valve body;
An adjusting pad is arranged at one end of the self-sealing ring, which is far away from the sliding valve seat, and a gland which is fixed on the outer side of the valve body through a screw is arranged at one end of the adjusting pad, which is far away from the self-sealing ring;
an annular groove is formed in one end, close to the adjusting pad, of the pressing cover, a plurality of springs are fixed in the annular groove, and one end, located on the outer side of the annular groove, of each spring is in contact with the adjusting pad;
The outer ring of the butterfly plate is fixed with a pure metal sealing ring, and the outer ring of the pure metal sealing ring and the inner ring of the sliding valve seat are eccentric conical surfaces matched with each other.
2. the high performance triple offset bi-directional pure metal butterfly valve of claim 1, wherein: the butterfly plate is characterized in that a metal sealing ring groove is formed in the side face of the butterfly plate, the pure metal sealing ring is sleeved in the metal sealing ring groove, and a butterfly plate pressing plate ring fixed on the butterfly plate through a screw is arranged on the side face of the pure metal sealing ring.
3. The high performance triple offset bi-directional pure metal butterfly valve of claim 1 or 2, wherein: the pure metal sealing ring is a pure metal surfacing sealing ring.
4. the high performance triple offset bi-directional pure metal butterfly valve of claim 1 or 2, wherein: the adjusting pad is provided with a plurality of blind holes at one end close to the gland, a baffle is fixed at each of two ends of each spring, and the two baffles on each spring are respectively in movable contact with the annular groove and the blind holes corresponding to the springs.
5. The high performance triple offset bi-directional pure metal butterfly valve of claim 3, wherein: the adjusting pad is provided with a plurality of blind holes at one end close to the gland, a baffle is fixed at each of two ends of each spring, and the two baffles on each spring are respectively in movable contact with the annular groove and the blind holes corresponding to the springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920228378.5U CN209762276U (en) | 2019-02-20 | 2019-02-20 | High-performance three-eccentric bidirectional pure metal hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920228378.5U CN209762276U (en) | 2019-02-20 | 2019-02-20 | High-performance three-eccentric bidirectional pure metal hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209762276U true CN209762276U (en) | 2019-12-10 |
Family
ID=68752349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920228378.5U Expired - Fee Related CN209762276U (en) | 2019-02-20 | 2019-02-20 | High-performance three-eccentric bidirectional pure metal hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209762276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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
- 2019-02-20 CN CN201920228378.5U patent/CN209762276U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |