CN220706431U - Strong-tightness butterfly valve capable of avoiding abrasion and corrosion - Google Patents
Strong-tightness butterfly valve capable of avoiding abrasion and corrosion Download PDFInfo
- Publication number
- CN220706431U CN220706431U CN202322242054.6U CN202322242054U CN220706431U CN 220706431 U CN220706431 U CN 220706431U CN 202322242054 U CN202322242054 U CN 202322242054U CN 220706431 U CN220706431 U CN 220706431U
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- butterfly plate
- butterfly
- valve body
- valve rod
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- 238000005299 abrasion Methods 0.000 title claims abstract description 25
- 238000005260 corrosion Methods 0.000 title claims abstract description 22
- 230000007797 corrosion Effects 0.000 title claims abstract description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to a strong-sealing butterfly valve capable of avoiding abrasion and corrosion, which comprises a valve body, a butterfly plate and a valve rod, wherein the butterfly plate is positioned in an inner cavity of the valve body, the butterfly plate of the valve rod is fixedly connected and rotationally connected with the valve body, a sealing gasket is arranged in the inner cavity of the valve body, the butterfly plate is abutted with the sealing gasket, the thickness of the sealing gasket is larger than the height of a gap between the butterfly plate and the valve body, and a hardening layer is arranged at one end, close to the butterfly plate, of the sealing gasket. This scheme sets up sealed pad in the valve body inner chamber, blocks up the leakproofness that the clearance between butterfly plate and the valve body was improved to the clearance between butterfly plate and the valve body through sealed pad and the clearance interference fit that produces between butterfly plate and the valve body, can also avoid producing wearing and tearing between butterfly plate and the valve body when rotating, and then takes place to corrode the life that influences the butterfly valve in wearing and tearing department. The sealing gasket is provided with the hardening layer, and the hardening layer can further reduce abrasion of the butterfly plate on the sealing gasket during rotation.
Description
Technical Field
The utility model relates to the technical field of butterfly valves, in particular to a strong-tightness butterfly valve capable of avoiding abrasion and corrosion.
Background
The butterfly valve has the characteristics of unique structure, light opening, convenient operation, small fluid resistance, convenient maintenance and the like, can be installed at any position, and is widely applied to water supply and drainage pipelines of foods, medicines, electric power, papermaking and the like to play roles in regulating flow and intercepting media. The butterfly valve mainly comprises valve body, butterfly plate, valve rod, and its theory of operation is that transmission drive valve rod rotates, and the valve rod rotates and drives the butterfly plate and rotate, realizes the switching of butterfly valve and to the control of medium velocity of flow size, produces wearing and tearing easily when the butterfly plate rotates the back butterfly plate many times in the valve body on the both ends of butterfly plate and valve body butt to along with butterfly valve operating length's increase, receive the soaking of water can accelerate the corruption to valve plate and valve body wearing and tearing department on the butterfly valve, leak easily between butterfly plate and valve body, influence the gas tightness of butterfly valve.
Disclosure of Invention
The utility model provides a strong-tightness butterfly valve capable of avoiding abrasion and corrosion, which aims to solve the problems that in the prior art, abrasion parts between a butterfly plate and a valve body are corroded rapidly and the air tightness of the butterfly valve is affected. The butterfly valve in this scheme is provided with sealed the pad in its easy wearing and tearing department to set up the hardening layer that reduces wearing and tearing on sealed pad, when avoiding the butterfly plate to rotate and lead to the valve body wearing and tearing, can also increase the leakproofness between butterfly plate and the valve body.
The technical scheme adopted by the utility model is as follows: the utility model provides a can avoid wearing and tearing strong leakproofness butterfly valve of corruption, includes valve body, butterfly plate and valve rod, and the butterfly plate is located the valve body inner chamber, and valve rod butterfly plate fixed connection and with the valve body rotation are connected, the valve body inner chamber is equipped with sealed pad, and the butterfly plate is greater than the height in clearance between butterfly plate and the valve body with sealed pad butt and the thickness of sealed pad, and the one end that is close to the butterfly plate on the sealed pad is equipped with the hardening layer.
When the butterfly plate is positioned in the inner cavity of the valve body, the sealing gasket is positioned between the butterfly plate and the valve body, and the sealing gasket is in clearance interference fit with the butterfly plate and the valve body due to the fact that the thickness of the sealing gasket is larger than the height of a clearance between the butterfly plate and the valve body. The butterfly plate can be driven to rotate in the inner cavity of the valve body by the valve rod to drive the butterfly valve to open or close. And one end, close to the butterfly plate, of the sealing gasket is provided with a hardening layer, and the butterfly plate is abutted with the sealing gasket through the hardening layer.
This scheme sets up sealed pad in the valve body inner chamber, blocks up the leakproofness that the clearance between butterfly plate and the valve body was improved to the clearance between butterfly plate and the valve body through sealed pad and the clearance interference fit that produces between butterfly plate and the valve body, can also avoid producing wearing and tearing between butterfly plate and the valve body when rotating, and then takes place to corrode the life that influences the butterfly valve in wearing and tearing department. The sealing gasket is provided with the hardening layer, and the hardening layer can further reduce abrasion of the butterfly plate on the sealing gasket during rotation.
Preferably, the thickness of the hardened layer is 0.5mm to 1mm. The hardening layer is a nitrile rubber hardening layer, and the sealing gasket is a rubber sealing gasket. The thickness of the hardening layer influences the hardness and the elasticity of the sealing gasket, if the thickness of the hardening layer is too large, when the butterfly plate rotates under the drive of the valve rod, the resistance between the butterfly plate and the sealing gasket can be increased, the abrasion speed of the two ends of the butterfly plate, which are abutted against the sealing gasket, is accelerated, and if the thickness of the hardening layer is too small, the sealing gasket is not abrasion-resistant and does not have good abrasion-resistant effect. Experiments prove that. When the thickness of the hardened layer is between 0.5mm and 1mm, the hardened layer on the sealing gasket can play a good abrasion-resistant effect and does not influence the hardness and elasticity of the sealing gasket. The rubber material is elastic, and can quickly recover deformation after being stressed and deformed. Nitrile rubber is higher in tensile strength and hardness and more abrasion resistant than rubber.
Preferably, the valve rod comprises a first valve rod and a second valve rod, the first valve rod is positioned in the inner cavity of the valve body, one end of the first valve rod, which is rotationally connected with the valve body, is round, and one end of the first valve rod, which is fixedly connected with the butterfly plate, is square; the second valve rod passes the valve body, stretches into the one end and butterfly plate fixed connection and this end of valve body on the second valve rod and is square, lies in the one end that the valve body outside rotated with the valve body on the second valve rod and is connected for circularly, is equipped with the connecting hole on the butterfly plate and is used for making first valve rod and the one end that the second valve rod stretches into the butterfly plate closely laminate with the butterfly plate. The butterfly plate is driven to rotate through the fixed connection of the square section above the valve rod and the butterfly plate, and the valve rod is connected with the butterfly plate, so that the valve rod is high in connection stability and strength and convenient to detach.
Preferably, the sealing gasket is provided with a first sealing gasket and a second sealing gasket respectively, the first sealing gasket is sleeved on the first valve rod, and the second sealing gasket is sleeved on the second valve rod. The two sealing gaskets are arranged at the two ends of the butterfly valve respectively, so that the tightness between the butterfly plate and the valve body can be further improved, and the butterfly plate can be prevented from being worn between the two ends of the butterfly plate and the valve body during rotation.
Preferably, the valve further comprises a positioning piece, a through hole for accommodating the first valve rod is formed in the valve body, and when the first valve rod rotationally connected with the through hole is located in the through hole, the positioning piece is fixedly connected with the valve body to block the through hole, and the tail end of the first valve rod is abutted to the end face of the positioning piece. When the butterfly valve is assembled, the first valve rod passes through the through hole to enable the square end above the first valve rod to extend into the connecting hole on the butterfly plate, and then the positioning piece is arranged on the valve body to enable the positioning piece to block the through hole. The positioning piece is arranged to be more convenient for fixing the first valve rod on the valve body.
Preferably, the two side walls used for blocking the valve body on the butterfly plate are arc-shaped, and the two side walls are symmetrically distributed by taking the axis of the valve rod as a symmetry axis. The shape of the arc-shaped side wall of the butterfly plate accords with fluid mechanics, and the butterfly plate can play a better guiding role on water flow in the butterfly valve when rotating the butterfly plate, so that resistance to water flow in the valve body is smaller when rotating the butterfly plate, and a user can use smaller force to stir the butterfly plate in the butterfly valve to rotate, thereby being more convenient to operate.
Preferably, the butterfly plate is a hollow butterfly plate. The butterfly plate is a stainless steel butterfly plate. The hollow butterfly plate not only can reduce the material used in the manufacturing process of the butterfly plate and save resources, but also can reduce the quality of the butterfly valve, is more convenient for the installation of the butterfly valve, reduces the quality of the butterfly plate, and is also convenient for a user to toggle the valve rod to drive the butterfly plate to rotate. The butterfly plate material is made of stainless steel, and has the advantages of high strength and good corrosion resistance, the butterfly valve needs to be in contact with water for a long time, the stainless steel butterfly plate is extremely easy to be corroded by water after being soaked in water for a long time, and the stainless steel butterfly plate can avoid the corrosion of water flow to the butterfly plate. And the stainless steel material has high strength, and can reduce the abrasion of the butterfly plate.
Preferably, the valve further comprises a turbine driving part, and the turbine driving part is connected with one end of the valve rod extending out of the valve body and used for driving the valve rod to rotate so as to drive the butterfly plate to rotate. The turbine driving part comprises a hand wheel for driving the turbine driving part by a user. The user can drive the turbine driving part through the hand wheel so as to drive the butterfly valve to open and close, so that the butterfly valve is more convenient to operate by the user.
Compared with the prior art, the utility model has the beneficial effects that: the butterfly valve in this scheme sets up the sealed pad that has the stiffening layer, can also reduce the butterfly plate and rotate the wearing and tearing to sealed pad when can improving the leakproofness of butterfly valve, improves the life of butterfly valve. One end of the valve rod, which is connected with the butterfly plate, is square, and the butterfly plate has high connection strength with the valve rod and is convenient to detach. The butterfly plate side wall is arc and is the cavity butterfly plate, and the resistance that receives when rotating the butterfly plate is littleer and butterfly valve quality is lighter.
Drawings
FIG. 1 is a schematic diagram of a strong seal butterfly valve of the present utility model that avoids wear erosion;
FIG. 2 is a section view of section A of FIG. 1 of a strong seal butterfly valve of the utility model that avoids fretting corrosion;
FIG. 3 is an enlarged view of portion C of FIG. 2 of a strong seal butterfly valve of the utility model that is resistant to wear and corrosion;
FIG. 4 is a section view of section B of FIG. 1 of a strong seal butterfly valve of the utility model that is resistant to wear and corrosion.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for better illustration of the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present utility model and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.
The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:
example 1
1-3 show an embodiment 1 of a strong sealing butterfly valve capable of avoiding abrasion corrosion, comprising a valve body 1, a butterfly plate 2 and a valve rod 3, wherein the butterfly plate 2 is positioned in an inner cavity of the valve body 1, the valve rod 3 is fixedly connected with the butterfly plate 2 and is rotationally connected with the valve body 1, a sealing gasket 4 is arranged in the inner cavity of the valve body 1, the butterfly plate 2 is abutted with the sealing gasket 4, the thickness of the sealing gasket 4 is larger than the height of a gap between the butterfly plate 2 and the valve body 1, and a hardening layer 5 is arranged at one end, close to the butterfly plate 2, of the sealing gasket 4.
The working principle and working process of the embodiment are as follows: when the butterfly plate 2 is positioned in the inner cavity of the valve body 1, the sealing gasket 4 is positioned between the butterfly plate 2 and the valve body 1, and the sealing gasket 4 is in clearance interference fit with the butterfly plate 2 and the valve body 1 due to the fact that the thickness of the sealing gasket 4 is larger than the height of a clearance between the butterfly plate 2 and the valve body 1. The valve rod 3 can be rotated to drive the butterfly plate 2 to rotate in the inner cavity of the valve body 1 through the valve rod 3, so as to drive the butterfly valve to open and close. A hardening layer 5 is arranged at one end, close to the butterfly plate 2, of the sealing gasket 4, and the butterfly plate 2 is abutted to the sealing gasket 4 through the hardening layer 5.
The beneficial effects of this embodiment are: this scheme sets up sealed 4 that fills up in valve body 1 inner chamber, blocks up the clearance between butterfly plate 2 and the valve body 1 through the clearance interference fit that produces between sealed 4 and butterfly plate 2 and the valve body 1 and improves the leakproofness of butterfly valve, can also avoid producing wearing and tearing between butterfly plate 2 and the valve body 1 when rotating, and then takes place to corrode the life that influences the butterfly valve in wearing and tearing department. The hardened layer 5 is provided on the gasket 4, and the hardened layer 5 can further reduce abrasion of the gasket 4 caused by rotation of the butterfly plate 2.
Example 2
1-4 show an embodiment 2 of a strong sealing butterfly valve capable of avoiding abrasion corrosion, comprising a valve body 1, a butterfly plate 2 and a valve rod 3, wherein the butterfly plate 2 is positioned in an inner cavity of the valve body 1, the valve rod 3 is fixedly connected with the butterfly plate 2 and is rotationally connected with the valve body 1, a sealing gasket 4 is arranged in the inner cavity of the valve body 1, the butterfly plate 2 is abutted with the sealing gasket 4, the thickness of the sealing gasket 4 is larger than the height of a gap between the butterfly plate 2 and the valve body 1, and a hardening layer 5 is arranged at one end, close to the butterfly plate 2, of the sealing gasket 4.
Specifically, the thickness of the hardened layer 5 was 1mm. The hardened layer 5 is a nitrile rubber hardened layer 5, and the gasket 4 is a rubber gasket 4.
Specifically, the valve rod 3 comprises a first valve rod 301 and a second valve rod 302, the first valve rod 301 is positioned in the inner cavity of the valve body 1, one end of the first valve rod 301, which is rotationally connected with the valve body 1, is round, and one end of the first valve rod 301, which is fixedly connected with the butterfly plate 2, is square; the second valve rod 302 passes through the valve body 1, one end of the second valve rod 302 extending into the valve body 1 is fixedly connected with the butterfly plate 2, the end is square, one end of the second valve rod 302, which is positioned outside the valve body 1 and is rotationally connected with the valve body 1, is round, and the butterfly plate 2 is provided with a connecting hole for enabling one end of the first valve rod 301 and the second valve rod 302 extending into the butterfly plate 2 to be tightly attached to the butterfly plate 2.
Specifically, the sealing gasket 4 has two first sealing gaskets 4014 and a second sealing gasket 4024, the first sealing gasket 4014 is sleeved on the first valve rod 301, and the second sealing gasket 4024 is sleeved on the second valve rod 302.
Specifically, the valve further comprises a positioning piece 6, a through hole for accommodating the first valve rod 301 is formed in the valve body 1, and when the first valve rod 301 rotationally connected with the through hole is located in the through hole, the positioning piece 6 is fixedly connected with the valve body 1 to block the through hole, and the tail end of the first valve rod 301 is abutted to the end face of the positioning piece 6. When the butterfly valve is assembled, the first valve rod 301 passes through the through hole to enable the square end on the first valve rod 301 to extend into the connecting hole on the butterfly plate 2, and then the positioning piece 6 is arranged on the valve body 1 to enable the positioning piece to block the through hole.
The beneficial effects of this embodiment are: when the thickness of the hardened layer 5 is 1mm, the hardened layer 5 on the gasket 4 can exert a good abrasion-resistant effect without affecting the hardness and elasticity of the gasket 4. The rubber material is elastic, and can quickly recover deformation after being stressed and deformed. Nitrile rubber is higher in tensile strength and hardness and more abrasion resistant than rubber. The butterfly plate 2 is driven to rotate through the square section on the valve rod 3 and the fixed connection of the butterfly plate 2, and the valve rod 3 is connected with the butterfly plate 2 and then is high in stable strength and convenient to detach. The two sealing gaskets 4 are arranged at the two ends of the butterfly valve respectively, so that the tightness between the butterfly plate 2 and the valve body 1 can be further improved, and the butterfly plate 2 can be prevented from being worn between the two ends of the butterfly plate and the valve body 1 during rotation. The positioning member 6 is provided to further facilitate the fixation of the first valve stem 301 to the valve body 1.
Example 3
1-4 show an embodiment 3 of a strong sealing butterfly valve capable of avoiding abrasion corrosion, comprising a valve body 1, a butterfly plate 2 and a valve rod 3, wherein the butterfly plate 2 is positioned in an inner cavity of the valve body 1, the valve rod 3 is fixedly connected with the butterfly plate 2 and is rotationally connected with the valve body 1, a sealing gasket 4 is arranged in the inner cavity of the valve body 1, the butterfly plate 2 is abutted with the sealing gasket 4, the thickness of the sealing gasket 4 is larger than the height of a gap between the butterfly plate 2 and the valve body 1, and a hardening layer 5 is arranged at one end, close to the butterfly plate 2, of the sealing gasket 4.
Specifically, the thickness of the hardened layer 5 was 1mm. The hardened layer 5 is a nitrile rubber hardened layer 5, and the gasket 4 is a rubber gasket 4.
Specifically, the valve rod 3 comprises a first valve rod 301 and a second valve rod 302, the first valve rod 301 is positioned in the inner cavity of the valve body 1, one end of the first valve rod 301, which is rotationally connected with the valve body 1, is round, and one end of the first valve rod 301, which is fixedly connected with the butterfly plate 2, is square; the second valve rod 302 passes through the valve body 1, one end of the second valve rod 302 extending into the valve body 1 is fixedly connected with the butterfly plate 2, the end is square, one end of the second valve rod 302, which is positioned outside the valve body 1 and is rotationally connected with the valve body 1, is round, and the butterfly plate 2 is provided with a connecting hole for enabling one end of the first valve rod 301 and the second valve rod 302 extending into the butterfly plate 2 to be tightly attached to the butterfly plate 2.
Specifically, the sealing gasket 4 has two first sealing gaskets 4014 and a second sealing gasket 4024, the first sealing gasket 4014 is sleeved on the first valve rod 301, and the second sealing gasket 4024 is sleeved on the second valve rod 302.
Specifically, the valve further comprises a positioning piece 6, a through hole for accommodating the first valve rod 301 is formed in the valve body 1, and when the first valve rod 301 rotationally connected with the through hole is located in the through hole, the positioning piece 6 is fixedly connected with the valve body 1 to block the through hole, and the tail end of the first valve rod 301 is abutted to the end face of the positioning piece 6. When the butterfly valve is assembled, the first valve rod 301 passes through the through hole to enable the square end on the first valve rod 301 to extend into the connecting hole on the butterfly plate 2, and then the positioning piece 6 is arranged on the valve body 1 to enable the positioning piece to block the through hole.
Specifically, two side walls on the butterfly plate 2 for blocking the valve body 1 are arc-shaped and are symmetrically distributed by taking the axis of the valve rod 3 as a symmetry axis. The butterfly plate 2 is a hollow butterfly plate 2. The butterfly plate 2 is a stainless steel butterfly plate 2.
Specifically, the valve further comprises a turbine driving part 7, and the turbine driving part 7 is connected with one end, extending out of the valve body 1, of the valve rod 3 to drive the valve rod 3 to rotate so as to drive the butterfly plate 2 to rotate. The turbine driving part 7 includes a hand wheel 701 for driving the turbine driving part 7 by a user.
The beneficial effects of this embodiment are: the shape of the arc-shaped side wall of the butterfly plate 2 accords with fluid mechanics, and the butterfly plate 2 can play a better guiding role on water flow in the butterfly valve when rotating the butterfly plate 2, so that resistance to water flow in the valve body 1 is smaller when rotating the butterfly plate 2, and a user can use smaller force to stir the butterfly plate 2 in the butterfly valve to rotate, thereby being more convenient to operate. The hollow butterfly plate 2 not only can reduce the material used in manufacturing the butterfly plate 2, saves resources, but also can reduce the quality of the butterfly valve, is more convenient for the installation of the butterfly valve, reduces the quality of the butterfly plate 2, and is also convenient for a user to stir the valve rod 3 to drive the butterfly plate 2 to rotate. The butterfly plate 2 is made of stainless steel, the stainless steel has the advantages of high strength and good corrosion resistance, the butterfly valve needs to be in contact with water for a long time, the stainless steel butterfly plate 2 is extremely easy to be corroded by water after being soaked in water for a long time, and the stainless steel butterfly plate 2 can avoid the corrosion of water flow to the butterfly plate 2. And the stainless steel material has high strength, so that the abrasion of the butterfly plate 2 can be reduced. The user can drive the turbine driving part 7 through the hand wheel 701 so as to drive the butterfly valve to open and close, so that the user can operate the butterfly valve conveniently.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. Can avoid strong leakproofness butterfly valve of wearing and tearing corruption, a serial communication port, including valve body (1), butterfly plate (2) and valve rod (3), butterfly plate (2) are located valve body (1) inner chamber, valve rod (3) butterfly plate (2) fixed connection and with valve body (1) rotate and are connected, valve body (1) inner chamber is equipped with sealed pad (4), butterfly plate (2) with sealed pad (4) butt just the thickness of sealed pad (4) is greater than butterfly plate (2) with the height in clearance between valve body (1), be close to on sealed pad (4) one end of butterfly plate (2) is equipped with hardening layer (5).
2. A strong seal butterfly valve avoiding fretting corrosion according to claim 1, characterized in that the hardened layer (5) has a thickness of 0.5mm-1mm.
3. A strong seal butterfly valve according to claim 2, wherein the hardened layer (5) is a nitrile rubber hardened layer (5) and the gasket (4) is a rubber gasket (4).
4. The strong-tightness butterfly valve capable of avoiding abrasion corrosion according to claim 1, wherein the valve rod (3) comprises a first valve rod (301) and a second valve rod (302), the first valve rod (301) is positioned in an inner cavity of the valve body (1), one end of the first valve rod (301) which is rotationally connected with the valve body (1) is round, and one end of the first valve rod (301) which is fixedly connected with the butterfly plate (2) is square; the second valve rod (302) passes through the valve body (1), the one end that stretches into on the second valve rod (302) valve body (1) with butterfly plate (2) fixed connection just this end is square, lie in on the second valve rod (302) valve body (1) outside with the one end that valve body (1) rotated and is connected is circular, be equipped with the connecting hole on butterfly plate (2) and be used for making first valve rod (301) with the one end that stretches into on second valve rod (302) butterfly plate (2) with butterfly plate (2) closely laminate.
5. The strong seal butterfly valve of claim 4, wherein the seal (4) has two seals, a first seal (401) (4) and a second seal (402) (4), the first seal (401) (4) is sleeved on the first valve stem (301), and the second seal (402) (4) is sleeved on the second valve stem (302).
6. The butterfly valve with high tightness capable of avoiding abrasion corrosion according to claim 4, further comprising a positioning piece (6), wherein the valve body (1) is provided with a through hole for accommodating the first valve rod (301), and when the first valve rod (301) rotationally connected with the through hole is positioned in the through hole, the positioning piece (6) is fixedly connected with the valve body (1) to block the through hole, and the tail end of the first valve rod (301) is abutted with the end face of the positioning piece (6).
7. The butterfly valve with high tightness capable of avoiding abrasion corrosion according to claim 1, wherein two side walls of the butterfly plate (2) for blocking the valve body (1) are arc-shaped and are symmetrically distributed by taking the axis of the valve rod (3) as a symmetry axis.
8. A butterfly valve with high tightness capable of avoiding wear and corrosion according to claim 7, characterized in that said butterfly plate (2) is a hollow butterfly plate (2).
9. A butterfly valve with high tightness against wear and corrosion according to claim 8, characterised in that said butterfly plate (2) is a stainless steel butterfly plate (2).
10. The butterfly valve with high tightness capable of avoiding abrasion corrosion according to claim 1, further comprising a turbine driving part (7), wherein the turbine driving part (7) is connected with one end of the valve rod (3) extending out of the valve body (1) to drive the valve rod (3) to rotate so as to drive the butterfly plate (2) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322242054.6U CN220706431U (en) | 2023-08-18 | 2023-08-18 | Strong-tightness butterfly valve capable of avoiding abrasion and corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322242054.6U CN220706431U (en) | 2023-08-18 | 2023-08-18 | Strong-tightness butterfly valve capable of avoiding abrasion and corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220706431U true CN220706431U (en) | 2024-04-02 |
Family
ID=90437713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322242054.6U Active CN220706431U (en) | 2023-08-18 | 2023-08-18 | Strong-tightness butterfly valve capable of avoiding abrasion and corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220706431U (en) |
-
2023
- 2023-08-18 CN CN202322242054.6U patent/CN220706431U/en active Active
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