CN114263751A - Scour prevention butterfly valve - Google Patents
Scour prevention butterfly valve Download PDFInfo
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- CN114263751A CN114263751A CN202111510407.5A CN202111510407A CN114263751A CN 114263751 A CN114263751 A CN 114263751A CN 202111510407 A CN202111510407 A CN 202111510407A CN 114263751 A CN114263751 A CN 114263751A
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- 230000002265 prevention Effects 0.000 title claims description 4
- 238000007789 sealing Methods 0.000 claims abstract description 77
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims description 31
- 239000000945 filler Substances 0.000 claims description 19
- 210000004907 gland Anatomy 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 22
- 238000009991 scouring Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention belongs to the technical field of pipeline valves, and particularly relates to an anti-scouring butterfly valve, which comprises a valve body, wherein a valve seat is fixedly connected to the inner surface of the valve body, a valve plate is arranged on the inner surface of the valve seat, a sealing mechanism is fixedly connected to the outer surface of the valve plate, the outer surface of the sealing mechanism is in sliding connection with the inner wall of the valve seat, a first fixed seat is arranged at the middle position of the right side of the valve plate, a second fixed seat is arranged below the first fixed seat, a valve rod is fixedly connected to the inner wall of the upper end of the first fixed seat, the other end of the valve rod penetrates through the inner wall of the valve body and extends to the outside of the valve body to be rotatably connected with a filling pressure plate, the lower part of the filling pressure plate is fixedly connected with the upper part of the outer surface of the valve body, and the valve plate and the valve seat are matched to have a soft-hard combined double-layer sealing effect by arranging the sealing mechanism, so that the butterfly valve has better sealing performance when in use, the sealing effect of the butterfly valve caused by damage of the sealing layer of the valve plate can be prevented from being poor.
Description
Technical Field
The invention belongs to the technical field of pipeline valves, and particularly relates to an anti-scouring butterfly valve.
Background
The butterfly valve is a valve which utilizes a circular butterfly plate to open, close and adjust a fluid channel along with the rotation of a valve rod, most of the butterfly valves can be used for controlling a conveying switch with suspended solid particle media, and can also be used for controlling the conveying switch of powder and particle media according to the strength of a sealing piece, so that the butterfly valve is widely applied to the fields of petroleum, chemical engineering, metallurgy, electric power, food, medicine, water supply and drainage, gas conveying and the like; publication number CN111795157A discloses an anti-scouring butterfly valve, the anti-scouring butterfly valve include: the valve body that has import and export, with rotatable mode set up in valve rod on the valve body, fixed set up in butterfly plate on the valve rod, the butterfly plate side is encircleed and is provided with the sealing washer, the scour prevention butterfly valve is still including transferring controlling part and butterfly plate protection machanism, works as the butterfly plate opens the back, transfer controlling part control the protection machanism of butterfly plate laminate in one side that the butterfly plate is close to the import prevents the butterfly plate is strikeed by the medium. The invention has the advantages that: through setting up butterfly plate protection machanism and locking mechanical system, when making the butterfly valve open, the cam can control the guard plate and be close to and cover the sealing washer on the butterfly plate to the butterfly plate direction to can play the guard action to the sealing washer, prevent that the medium from to the washing away of sealing washer, improve the life of butterfly valve.
All select soft seal among the current small-size butterfly valve, the medium forms the front to its sealed face when the valve plate normally open state and erodees, makes the soft seal area in the sealing layer directly influence sealing performance after being erodeed to make the butterfly valve can take place the phenomenon of leaking after long-time the use.
Disclosure of Invention
The invention aims to provide an anti-scouring butterfly valve, which aims to solve the specific problem that soft sealing is selected in the existing small butterfly valve, when a valve plate is in a normally open state, a medium scours the front surface of a sealing surface of the valve plate, so that a soft sealing belt in a sealing layer directly influences the sealing performance after being scoured, and the butterfly valve can leak after being used for a long time.
In order to achieve the purpose, the invention provides the following technical scheme:
an anti-scouring butterfly valve comprises a valve body, wherein a valve seat is fixedly connected to the inner surface of the valve body, a valve plate is arranged on the inner surface of the valve seat, the outer surface of the valve plate is fixedly connected with a sealing mechanism, the outer surface of the sealing mechanism is connected with the inner wall of the valve seat in a sliding way, a first fixed seat is arranged at the middle position of the right side of the valve plate, a second fixed seat is arranged below the first fixed seat, the inner wall of the upper end of the first fixed seat is fixedly connected with a valve rod, the outer surface of the valve rod and the inner part of the first fixed seat are provided with a first sealing ring, the other end of the valve rod penetrates through the inner wall of the valve body and extends to the outside of the valve body to be rotatably connected with a filling pressure plate, the lower part of the filling pressing plate is fixedly connected with the upper part of the outer surface of the valve body, the outer surface of the upper end of the valve rod is provided with a filling material below the filling pressing plate, and the upper part of the filling pressing plate is fixedly connected with an upper gland.
Through adopting above-mentioned technical scheme, make valve plate and disk seat cooperation have the double-deck sealed effect of soft or hard combination through setting up sealing mechanism, through setting up stopping and packing the clamp plate, can strengthen the leakproofness of valve body to make the butterfly valve have better leakproofness when using, can prevent to damage and lead to the sealed effect of butterfly valve poor because of the sealing layer of valve plate.
Preferably, the lower extreme inner wall swing joint of second fixing base has the bracing piece, the other end of bracing piece runs through the lower extreme inner wall of valve body and extends to the outside fixedly connected with lower gland of valve body, the upper end of lower gland is connected with the lower extreme external surface fixed of valve body, the lower extreme surface of bracing piece just is located the top of lower gland and is provided with the stopping.
Through adopting above-mentioned technical scheme, can strengthen the stability of valve plate through setting up the bracing piece, can prevent that the medium pressure in the pipeline from making the sealing mechanism wearing and tearing increase of valve plate surface when too big impact to the valve plate.
Preferably, the inside of valve rod sets up to hollow structure, the oil pocket has been seted up to the below inner wall of valve rod, the oil filler point has been seted up to the one side that the valve plate was kept away from to the internal surface of oil pocket, the inner wall threaded connection of oil filler point has the end cap, the surface of end cap is provided with the sealing ring.
By adopting the technical scheme, the oil filling port is arranged on one side of the oil cavity, so that oil can be filled into the oil cavity after the valve body is assembled, and the medium in the pipeline can be prevented from entering the oil cavity when the valve plate is used by arranging the plug.
Preferably, the top inner wall of valve rod is seted up flutedly, the inner wall fixedly connected with friction disc of recess, the inner wall sliding connection of friction disc has the dwang, the surface of dwang is connected with the internal surface rotation of valve rod, the length of dwang is greater than the length of valve rod, the one end of dwang runs through the inner wall of last gland and extends to the top fixedly connected with handle of gland, the other end of dwang is located the interior fixedly connected with piston of oil pocket, the surface of piston and the inner wall sliding connection of oil pocket.
Through adopting above-mentioned technical scheme, when the valve plate is closed, make the dwang drive the piston and slide down along the inner wall of oil pocket through pressing the handle, fluid in the piston extrusion oil pocket passes through the oil filler point and enters into the gasbag, then make the gasbag grow extrude to one side of cushion, until cushion contacts with the disk seat, when the valve plate needs to be opened, make the dwang drive the piston and slide up along the inner wall of oil pocket through upwards pulling handle, thereby take back the interior messenger's gasbag that makes of oil filler point the oil pocket to the oil pocket and resume original state, simultaneously the top of cushion is retracted in the metal sheet, thereby make the butterfly valve lose the effect of soft seal, then drive the dwang through rotatory handle and rotate, the dwang drives the valve rod through the friction plate and rotates and open the valve plate, thereby can reduce the wearing and tearing between cushion and the disk seat.
Preferably, the inside of valve plate is provided with the oil filler point, the oil filler point sets up to L type structure, the one end of oil filler point is linked together with the lower extreme of oil pocket, the other end of oil filler point is linked together with the surface of valve plate, one side inner wall fixedly connected with oil filler pipe that the oil filler point is close to sealing mechanism, sealing mechanism is run through and sealing mechanism's inside is extended to the other end of oil filler pipe.
By adopting the technical scheme, the oil in the oil filling hole can be ensured to enter the air bag by arranging the oil filling pipe.
Preferably, sealing mechanism includes mount, cushion, gasbag and metal sheet, the internal surface of mount and the outer fixed surface of valve plate are connected, one side that the right side of metal sheet is close to the valve plate and the left side fixed connection of mount, the surface cover of mount is equipped with cushion and gasbag, the right side of cushion and the surface swing joint of mount, the left side of cushion and the surface swing joint of gasbag, the surface of gasbag and the right side swing joint of metal sheet.
Through adopting above-mentioned technical scheme, make the butterfly valve have the double-deck sealed effect that soft or hard combines through setting up sealing mechanism, make the butterfly valve have sealed effect firmly through setting up the metal sheet, make the butterfly valve have soft sealed effect through setting up the cushion, make the sealed effect of valve body better through the double-deck seal that soft or hard combines when the valve body needs to seal, when the valve body need not seal, the metal sheet can protect the top of cushion.
Preferably, the material of gasbag adopts flexible material, the through-hole has been seted up to one side that the gasbag is close to the valve plate, the inner wall swing joint of through-hole has the notes oil pipe, the surface of notes oil pipe is provided with the second sealing washer, the surface of second sealing washer and the inner wall sliding connection of through-hole.
Through adopting above-mentioned technical scheme, adopt flexible material to make the gasbag receive certain deformation when extrudeing through the gasbag, can prevent that the gasbag from taking place to leak the fluid in the gasbag when receiving the extrusion through being provided with the second sealing washer between through-hole and notes oil pipe.
Preferably, the cross section of the metal plate is of a J-shaped structure, the outer surface of the metal plate is in sliding connection with the inner surface of the valve seat, and the diameter of the outer ring of the fixing frame is smaller than that of the outer ring of the metal plate.
Through adopting above-mentioned technical scheme, set up to J type structure through the cross-section with the metal sheet, can make the gasbag take place to warp to one side of cushion, the outer lane diameter through setting up the mount is less than the outer lane diameter of metal sheet, can prevent that the mount can collide the disk seat when opening and close the valve plate.
Preferably, the volume of the oil chamber is larger than that of the oil filling hole.
By adopting the technical scheme, the volume of the oil cavity is larger than that of the oil filling hole, so that the piston can ensure that oil enters the air bag when the oil is extruded.
Preferably, the distance from the upper part of the oil filling opening to the upper part of the inner wall of the oil cavity is larger than the thickness of the piston.
Through adopting above-mentioned technical scheme, the distance to oil pocket inner wall top through the top that sets up the oiling mouth is greater than the thickness of piston, can ensure that fluid can enter into the oil pocket of piston below when injecting fluid into the oil pocket.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, when the valve plate is closed, the rotating rod drives the piston to slide downwards along the inner wall of the oil cavity by pressing the handle, oil in the oil cavity extruded by the piston enters the air bag through the oil filling hole, then the air bag is enlarged and is extruded towards one side of the elastic pad until the elastic pad is contacted with the valve seat, when the valve plate needs to be opened, the rotating rod drives the piston to slide upwards along the inner wall of the oil cavity by pulling the handle upwards, so that the oil in the oil filling hole is pumped back into the oil cavity, the air bag is restored to the original state, the top of the elastic pad is retracted into the metal plate, the butterfly valve loses the soft sealing effect, then the rotating rod is driven to rotate by rotating the handle, the rotating rod drives the valve rod to rotate through the friction sheet to open the valve plate, and therefore, the abrasion between the elastic pad and the valve seat can be reduced.
2. According to the butterfly valve, the sealing mechanism is arranged, so that the valve plate and the valve seat are matched to have a soft-hard combined double-layer sealing effect, the butterfly valve has better sealing performance when in use, and the problem that the sealing effect of the butterfly valve is poor due to the damage of the sealing layer of the valve plate can be prevented.
Drawings
FIG. 1 is a rear view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic cross-sectional view A-A of FIG. 2 according to the present invention;
FIG. 4 is a schematic cross-sectional view of the sealing mechanism of the present invention in cooperation with the filler pipe in a sealed state;
fig. 5 is a schematic cross-sectional view of the sealing mechanism of the present invention in an unsealed state.
In the figure: the valve comprises a valve body 1, a valve seat 2, a valve plate 3, a sealing mechanism 4, a fixing frame 41, an elastic pad 42, an air bag 43, a metal plate 44, a valve rod 5, a rotating rod 6, a piston 7, an oil cavity 8, an oil filling port 9, a plug 10, a handle 11, filling materials 12, a filling pressure plate 13, a friction plate 14, an upper pressing cover 15, a lower pressing cover 16, a supporting rod 17, an oil filling hole 18, an oil filling pipe 19, a first sealing ring 20, a second sealing ring 21, a first fixing seat 22 and a second fixing seat 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, in an embodiment of the present invention, an anti-erosion butterfly valve includes a valve body 1, a valve seat 2 is fixedly connected to an inner surface of the valve body 1, a valve plate 3 is disposed on the inner surface of the valve seat 2, a sealing mechanism 4 is fixedly connected to an outer surface of the valve plate 3, an outer surface of the sealing mechanism 4 is slidably connected to an inner wall of the valve seat 2, a first fixing seat 22 is disposed at a right middle position of the valve plate 3, a second fixing seat 23 is disposed below the first fixing seat 22, a valve rod 5 is fixedly connected to an upper inner wall of the first fixing seat 22, a first sealing ring 20 is disposed on the outer surface of the valve rod 5 and inside the first fixing seat 22, another end of the valve rod 5 penetrates through the inner wall of the valve body 1 and extends to an outer portion of the valve body 1 to be rotatably connected to a filling pressure plate 13, a lower portion of the filling pressure plate 13 is fixedly connected to an upper portion of the outer surface of the valve body 1, a filling material 12 is disposed on the upper outer surface of the valve rod 5 and below the filling pressure plate 13, an upper gland 15 is fixedly connected above the filling pressure plate 13.
Through adopting above-mentioned technical scheme, make valve plate 3 and disk seat 2 cooperation have the double-deck sealed effect of soft or hard combination through setting up sealing mechanism 4, through setting up stopping 12 and packing clamp plate 13, can strengthen the leakproofness of valve body 1 to make the butterfly valve have better leakproofness when using, can prevent to damage and lead to the sealed effect of butterfly valve poor because of the sealing layer of valve plate 3.
In one embodiment of the present invention, a support rod 17 is movably connected to the inner wall of the lower end of the second fixing seat 23, the other end of the support rod 17 penetrates through the inner wall of the lower end of the valve body 1 and extends to the outside of the valve body 1, a lower gland 16 is fixedly connected to the outer surface of the lower end of the valve body 1, the upper end of the lower gland 16 is fixedly connected to the outer surface of the lower end of the valve body 1, and a filling material 12 is disposed on the outer surface of the lower end of the support rod 17 and above the lower gland 16.
Through adopting above-mentioned technical scheme, can strengthen the stability of valve plate 3 through setting up bracing piece 17, can prevent that the medium pressure in the pipeline from making the sealing mechanism 4 wearing and tearing increase of valve plate 3 surface when too big assaulting valve plate 3.
As an embodiment of the invention, the inside of the valve rod 5 is provided with a hollow structure, the lower inner wall of the valve rod 5 is provided with an oil cavity 8, the side of the inner surface of the oil cavity 8, which is far away from the valve plate 3, is provided with an oil filling opening 9, the inner wall of the oil filling opening 9 is in threaded connection with a plug 10, and the outer surface of the plug 10 is provided with a sealing ring.
By adopting the technical scheme, the oil filling port 9 is arranged on one side of the oil cavity 8, so that oil can be filled into the oil cavity 8 after the valve body 1 is assembled, and the medium in the pipeline of the valve plate 3 can be prevented from entering the oil cavity 8 by arranging the plug 10.
As an embodiment of the invention, a groove is formed in the upper inner wall of the valve rod 5, a friction plate 14 is fixedly connected to the inner wall of the groove, a rotating rod 6 is slidably connected to the inner wall of the friction plate 14, the outer surface of the rotating rod 6 is rotatably connected to the inner surface of the valve rod 5, the length of the rotating rod 6 is larger than that of the valve rod 5, one end of the rotating rod 6 penetrates through the inner wall of the upper gland 15 and extends to the upper portion of the upper gland 15 to be fixedly connected with a handle 11, the other end of the rotating rod 6 is located in the oil cavity 8 to be fixedly connected with a piston 7, and the outer surface of the piston 7 is slidably connected with the inner wall of the oil cavity 8.
By adopting the technical scheme, when the valve plate 3 is closed, the rotating rod 6 drives the piston 7 to slide downwards along the inner wall of the oil cavity 8 by pressing the handle 11, the piston 7 extrudes oil in the oil cavity 8 to enter the air bag 43 through the oil filling hole 18, then the air bag 43 is enlarged and extruded towards one side of the elastic pad 42 until the elastic pad 42 is contacted with the valve seat 2, when the valve plate 3 needs to be opened, the rotating rod 6 drives the piston 7 to slide upwards along the inner wall of the oil cavity 8 by pulling the handle 11 upwards, so that the oil in the oil filling hole 18 is pumped back into the oil cavity 8 to restore the air bag 43 to the original state, meanwhile, the top end of the elastic pad 42 is retracted into the metal plate 44, so that the butterfly valve loses the soft sealing effect, then the rotating rod 6 is driven to rotate by the rotating handle 11, the rotating rod 6 drives the valve rod 5 to rotate through the friction plate 14 to open the valve plate 3, so that the abrasion between the elastic pad 42 and the valve seat 2 can be reduced.
As an embodiment of the invention, the valve plate 3 is internally provided with an oil filling hole 18, the oil filling hole 18 is arranged in an L-shaped structure, one end of the oil filling hole 18 is communicated with the lower end of the oil cavity 8, the other end of the oil filling hole 18 is communicated with the outer surface of the valve plate 3, an oil filling pipe 19 is fixedly connected to the inner wall of one side of the oil filling hole 18 close to the sealing mechanism 4, and the other end of the oil filling pipe 19 penetrates through the sealing mechanism 4 and extends to the inside of the sealing mechanism 4.
By adopting the technical scheme, the oil in the oil filling hole 18 can be ensured to enter the air bag 43 by arranging the oil filling pipe 19.
As an embodiment of the present invention, the sealing mechanism 4 includes a fixing frame 41, an elastic pad 42, an air bag 43 and a metal plate 44, an inner surface of the fixing frame 41 is fixedly connected with an outer surface of the valve plate 3, a right side of the metal plate 44 close to the valve plate 3 is fixedly connected with a left side of the fixing frame 41, the elastic pad 42 and the air bag 43 are sleeved on an outer surface of the fixing frame 41, a right side of the elastic pad 42 is movably connected with the outer surface of the fixing frame 41, a left side of the elastic pad 42 is movably connected with the outer surface of the air bag 43, and an outer surface of the air bag 43 is movably connected with a right side of the metal plate 44.
Through adopting above-mentioned technical scheme, make the butterfly valve have the double-deck sealed effect of soft or hard combination through setting up sealing mechanism 4, make the butterfly valve have hard sealed effect through setting up metal sheet 44, make the butterfly valve have soft sealed effect through setting up cushion 42, make the sealed effect of valve body 1 better through the double-deck seal of soft or hard combination when valve body 1 needs seal, when valve body 1 need not seal, metal sheet 44 can be protected the top of cushion 42.
As an embodiment of the invention, the material of the air bag 43 is flexible material, a through hole is opened on one side of the air bag 43 close to the valve plate 3, the inner wall of the through hole is movably connected with the oil filling pipe 19, the outer surface of the oil filling pipe 19 is provided with a second sealing ring 21, and the outer surface of the second sealing ring 21 is connected with the inner wall of the through hole in a sliding way.
Through adopting above-mentioned technical scheme, adopt flexible material to make gasbag 43 receive certain deformation when extrudeing through gasbag 43, can prevent that the fluid in gasbag 43 from taking place to leak when receiving the extrusion through being provided with second sealing washer 21 between through-hole and filler pipe 19.
In one embodiment of the present invention, the cross section of the metal plate 44 is formed in a J-shaped configuration, the outer surface of the metal plate 44 is slidably connected to the inner surface of the valve seat 2, and the outer diameter of the fixing frame 41 is smaller than the outer diameter of the metal plate 44.
Through adopting above-mentioned technical scheme, set up to J type structure through the cross-section with sheet metal 44, can make gasbag 43 to the one side of cushion 42 take place to warp, be less than the outer lane diameter of sheet metal 44 through the outer lane diameter that sets up mount 41, can prevent that mount 41 can collide valve seat 2 when opening and close valve plate 3.
As an embodiment of the present invention, the capacity of the oil chamber 8 is larger than the capacity of the oil hole 18.
By adopting the technical scheme, the piston 7 can ensure that oil enters the air bag 43 when extruding the oil by setting the capacity of the oil chamber 8 to be larger than that of the oil filling hole 18.
As an embodiment of the present invention, the distance from above the oil filling port 9 to above the inner wall of the oil chamber 8 is larger than the thickness of the piston 7.
By adopting the technical scheme, the distance from the upper part of the oil filling port 9 to the upper part of the inner wall of the oil cavity 8 is larger than the thickness of the piston 7, so that oil can enter the oil cavity 8 below the piston 7 when the oil is injected into the oil cavity 8.
The working principle is as follows: when the valve plate 3 is closed, the rotating rod 6 drives the piston 7 to slide downwards along the inner wall of the oil chamber 8 by pressing the handle 11, the piston 7 presses oil in the oil chamber 8 to enter the air bag 42 through the oil filling hole 18, then the air bag 43 is enlarged and pressed toward one side of the elastic pad 42, until the elastic pad 42 is in contact with the valve seat 2, when the valve plate 3 needs to be opened, the rotating rod 6 drives the piston 7 to slide upwards along the inner wall of the oil chamber 8 by pulling the handle 11 upwards, thereby drawing the oil in the oil filler hole 18 back into the oil chamber 8 to restore the air bag 43 to its original state, the top of the elastic pad 42 is retracted into the metal plate 44, thereby causing the butterfly valve to lose its soft sealing effect, then the rotating rod 6 is driven to rotate by the rotating handle 11, and the valve rod 5 is driven to rotate by the rotating rod 6 through the friction plate 14 to open the valve plate 3, so that the abrasion between the elastic pad 42 and the valve seat 2 can be reduced.
According to the butterfly valve, the sealing mechanism 4 is arranged, so that the valve plate 3 and the valve seat 2 are matched to have a soft-hard combined double-layer sealing effect, the butterfly valve is enabled to have better sealing performance when in use, and the problem that the sealing effect of the butterfly valve is poor due to the damage of the sealing layer of the valve plate 3 can be prevented.
The technical features of the embodiments may be arbitrarily combined, and for brevity, all possible combinations of the technical features in the embodiments are not described in the above, however, as long as the combinations of the technical features do not exist in the above embodiments, only several embodiments of the present invention are expressed, and the description is more specific and detailed, but the present invention is not limited by the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides an scour prevention butterfly valve, includes valve body (1), its characterized in that: the inner surface of the valve body (1) is fixedly connected with the valve seat (2), the inner surface of the valve seat (2) is provided with the valve plate (3), the outer surface of the valve plate (3) is fixedly connected with the sealing mechanism (4), the outer surface of the sealing mechanism (4) is in sliding connection with the inner wall of the valve seat (2), the right middle position of the valve plate (3) is provided with a first fixing seat (22), a second fixing seat (23) is arranged below the first fixing seat (22), the upper end inner wall of the first fixing seat (22) is fixedly connected with the valve rod (5), the outer surface of the valve rod (5) is provided with a first sealing ring (20) inside the first fixing seat (22), the other end of the valve rod (5) penetrates through the inner wall of the valve body (1) and extends to the outside of the valve body (1) and is rotatably connected with the filling pressing plate (13), the lower part of the filling pressing plate (13) is fixedly connected with the upper part of the outer surface of the valve body (1), and a filling material (12) is arranged on the outer surface of the upper end of the valve rod (5) and below the filling pressing plate (13), and an upper gland (15) is fixedly connected above the filling pressing plate (13).
2. An anti-erosion butterfly valve according to claim 1, comprising: the lower extreme inner wall swing joint of second fixing base (23) has bracing piece (17), gland (16) under the other end of bracing piece (17) runs through the lower extreme inner wall of valve body (1) and extends to outside and fixedly connected with of valve body (1), the upper end of gland (16) is connected with the lower extreme external surface fixed of valve body (1) down, the lower extreme surface of bracing piece (17) and the top that is located gland (16) down are provided with stopping (12).
3. An anti-erosion butterfly valve according to claim 1, comprising: the inside of valve rod (5) sets up to hollow structure, oil pocket (8) have been seted up to the below inner wall of valve rod (5), oiling mouth (9) have been seted up to one side that valve plate (3) were kept away from to the internal surface of oil pocket (8), the inner wall threaded connection of oiling mouth (9) has end cap (10), the surface of end cap (10) is provided with the sealing ring.
4. An anti-erosion butterfly valve according to claim 1, comprising: the top inner wall of valve rod (5) is seted up flutedly, the inner wall fixedly connected with friction disc (14) of recess, the inner wall sliding connection of friction disc (14) has dwang (6), the surface of dwang (6) is connected with the internal surface rotation of valve rod (5), the length of dwang (6) is greater than the length of valve rod (5), the one end of dwang (6) runs through the inner wall of last gland (15) and extends to the top and the fixedly connected with handle (11) of gland (15), the other end of dwang (6) is located oil pocket (8) and fixedly connected with piston (7), the surface of piston (7) and the inner wall sliding connection of oil pocket (8).
5. An anti-erosion butterfly valve according to claim 1, comprising: the inside of valve plate (3) is provided with oil filler point (18), oil filler point (18) set up to L type structure, the one end of oil filler point (18) is linked together with the lower extreme of oil pocket (8), the other end of oil filler point (18) is linked together with the surface of valve plate (3), one side inner wall fixedly connected with notes oil pipe (19) that oil filler point (18) are close to sealing mechanism (4), the other end of notes oil pipe (19) runs through sealing mechanism (4) and extends to the inside of sealing mechanism (4).
6. An anti-erosion butterfly valve according to claim 1, comprising: sealing mechanism (4) are including mount (41), cushion (42), gasbag (43) and metal sheet (44), the internal surface of mount (41) and the outer fixed surface of valve plate (3) are connected, the right side of metal sheet (44) is close to the left side fixed connection of one side and mount (41) of valve plate (3), the surface cover of mount (41) is equipped with cushion (42) and gasbag (43), the right side of cushion (42) and the surface swing joint of mount (41), the left side of cushion (42) and the surface swing joint of gasbag (43), the surface of gasbag (43) and the right side swing joint of metal sheet (44).
7. An anti-erosion butterfly valve according to claim 6, wherein: the material of gasbag (43) adopts flexible material, the through-hole has been seted up to one side that gasbag (43) are close to valve plate (3), the inner wall swing joint of through-hole has oiling pipe (19), the surface of oiling pipe (19) is provided with second sealing washer (21), the surface of second sealing washer (21) and the inner wall sliding connection of through-hole.
8. An anti-erosion butterfly valve according to claim 6, wherein: the section of the metal plate (44) is of a J-shaped structure, the outer surface of the metal plate (44) is connected with the inner surface of the valve seat (2) in a sliding mode, and the diameter of the outer ring of the fixing frame (41) is smaller than that of the outer ring of the metal plate (44).
9. An anti-erosion butterfly valve according to claim 3, wherein: the capacity of the oil cavity (8) is larger than that of the oil filling hole (18).
10. An anti-erosion butterfly valve according to claim 3, wherein: the distance from the upper part of the oil filling port (9) to the upper part of the inner wall of the oil cavity (8) is larger than the thickness of the piston (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510407.5A CN114263751A (en) | 2021-12-11 | 2021-12-11 | Scour prevention butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811075A (en) * | 2022-05-27 | 2022-07-29 | 南通金百吉五金制造有限公司 | All-metal titanium alloy sealing butterfly valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114811075A (en) * | 2022-05-27 | 2022-07-29 | 南通金百吉五金制造有限公司 | All-metal titanium alloy sealing butterfly valve |
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