CN114413005A - Double-eccentric butterfly valve and manufacturing method of valve body sealing ring thereof - Google Patents
Double-eccentric butterfly valve and manufacturing method of valve body sealing ring thereof Download PDFInfo
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- CN114413005A CN114413005A CN202210075007.4A CN202210075007A CN114413005A CN 114413005 A CN114413005 A CN 114413005A CN 202210075007 A CN202210075007 A CN 202210075007A CN 114413005 A CN114413005 A CN 114413005A
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- 238000007789 sealing Methods 0.000 title claims abstract description 152
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 230000008093 supporting effect Effects 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2268—Sealing means for the axis of rotation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a double-eccentric butterfly valve and a manufacturing method of a valve body sealing ring thereof, and the double-eccentric butterfly valve comprises a valve body, a valve plate, a valve rod, a valve body sealing ring and a pressing ring, wherein a first elastic sealing ring is arranged between the valve body sealing ring and the valve body; the annular boss and the second elastic sealing ring are matched with the surface of the valve plate together, so that the bidirectional sealing performance of the valve is improved.
Description
Technical Field
The invention relates to the technical field of butterfly valves, in particular to a double-eccentric butterfly valve and a manufacturing method of a valve body sealing ring of the double-eccentric butterfly valve.
Background
The double-eccentric butterfly valve is also called as a high-performance butterfly valve, is mainly suitable for drainage of systems such as water plants, power plants, steel plant smelting, chemical engineering, water source spring engineering, environmental facility construction and the like, is particularly suitable for water pipelines, and is used as regulating and intercepting equipment. The key equipment of the filter tank of the water plant, namely a filtered water regulating valve, is usually a butterfly valve, bears important responsibilities, requires frequent regulation and has reliable performance, and the filter tank of the water plant usually operates in a constant water level filtration control mode at present. The opening adjusting frequency of the butterfly valve is about 60 times/h, and the single valve is adjusted more than 50 ten thousand times per year. The filter chamber double-eccentric butterfly valve usually adopts an electric or pneumatic actuating mechanism, the frequent action condition has great loss to the valve, and various parts of the valve are abraded to different degrees in half a year basically. Especially valve body sealing surface wear and valve stem wear.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a double-eccentric butterfly valve which can ensure the bidirectional sealing of a valve under the condition of frequent action.
The invention adopts the technical scheme for solving the technical problems that: a double-eccentric butterfly valve comprises a valve body, a valve plate, a valve rod, a valve body sealing ring and a pressing ring, wherein the valve body sealing ring is fixed on the valve body by the pressing ring, the valve rod is rotatably arranged on the valve body and is fixedly connected with the valve plate, the valve plate is in sealing fit with the valve body sealing ring, a first elastic sealing ring is arranged between the valve body sealing ring and the valve body, a second elastic sealing ring is arranged between the valve body sealing ring and the pressing ring, a fixing gasket, a first annular groove, a second annular groove and an annular boss are sequentially and integrally formed on the valve body sealing ring from outside to inside, the fixing gasket is clamped and fixed between the valve body and the pressing ring, the first annular groove and the second annular groove are respectively matched with the first elastic sealing ring and the second elastic sealing ring, the annular boss is arranged opposite to the second annular groove, and the annular boss and the second elastic sealing ring are tightly attached to the surface of the valve plate, the clamping ring is provided with a fixing component, the fixing component comprises a fixing screw, an elastic ejector rod and a third elastic sealing ring, the third elastic sealing ring is positioned between the valve body and the clamping ring, the surface of the outer ring of the clamping ring is provided with a third annular groove for installing the third elastic sealing ring, the inner wall of the valve body is provided with a fourth annular groove matched with the third elastic sealing ring, the end surface of the clamping ring is circumferentially provided with a plurality of fixing holes for installing the fixing screw, a communicating hole is arranged between the fixing hole and the third annular groove and is in sliding fit with the elastic ejector rod, the valve body and the fixing gasket are respectively provided with a screw hole and a positioning hole corresponding to the fixing holes, the rod body of the fixing screw is provided with a screw thread section and a conical surface section, the screw thread section passes through the positioning hole and is in threaded connection with the screw hole, one end of the elastic ejector rod is contacted with the third elastic sealing ring, the other end of the elastic ejector rod is in contact with the side face of the conical surface section.
In order to further improve the structure, a fourth elastic sealing ring and a fifth elastic sealing ring are fixedly bonded to one side of the fixing gasket, the diameter of the fourth elastic sealing ring is smaller than that of the fifth elastic sealing ring, and the fixing hole is formed between the fourth elastic sealing ring and the fifth elastic sealing ring.
Further perfect, be equipped with the aluminium bronze axle sleeve between valve rod and the valve body, be equipped with the wearing layer on the surface of valve rod, aluminium bronze axle sleeve upper portion is provided with filler formula axle head sealing device, be equipped with on the middle part inner wall of aluminium bronze axle sleeve with the lubricated sealing layer that the wearing layer contacted, the bottom of aluminium bronze axle sleeve is equipped with waterproof sealing bearing.
Further perfect, the elasticity ejector pin is including the extrusion piece and the kicking block that set up both ends, be equipped with on the extrusion piece with third elastic seal circle complex draw-in groove, set up the spring between extrusion piece and the kicking block, the spring overcoat is equipped with flexible protective sheath, fixed connection extrusion piece and kicking block are distinguished respectively at the both ends of flexible protective sheath, the kicking block is laminated with the side of conical surface section mutually.
Further perfection, first elastic sealing ring is the elastic metal sealing ring that cross sectional shape is the C type, and its one side surface towards the valve body has seted up fourth annular groove, be fixed with first magnetosphere and second magnetosphere on the both sides inner wall of fourth annular groove respectively, carry out mutual repulsion through magnetic force between first magnetosphere and the second magnetosphere.
And further perfecting, the groove type of the second annular groove is V-shaped, and one side of the second elastic sealing ring is provided with a V-shaped elastic supporting block fixedly connected with the second annular groove.
A manufacturing method of a valve body sealing ring in a double-eccentric butterfly valve comprises the following steps:
(1) blanking: calculating a proper size and properly reserving allowance according to valve plates of valves with different calibers, and punching a ring-shaped plate on a stainless steel plate with a certain thickness;
(2) cutting: stacking and fixing the annular plates together by using a clamp, and placing the annular plates on a lathe for finish machining to obtain the accurate sizes of the inner diameter and the outer diameter;
(3) compression molding: placing the finely processed annular plate on a special die for stamping to form a fixed gasket, a first annular groove, a second annular groove and an annular boss structure;
(4) surface treatment: spraying a wear-resistant coating on the surface of the annular plate, wherein the thickness of the wear-resistant coating is 0.10-0.60 mm, and polishing the surface of the annular plate by using a polishing machine;
(5) punching: and punching or drilling positioning holes in the fixing gasket.
The invention has the beneficial effects that: the invention adopts the disc spring type valve body sealing ring, the fixed gasket, the first annular groove, the second annular groove and the annular boss are sequentially and integrally formed on the valve body sealing ring from outside to inside, the first annular groove and the second annular groove are respectively matched with the first elastic sealing ring and the second elastic sealing ring, the sealing performance and the elasticity are increased, the valve seat can still elastically reset after being extruded for a long time, the plastic deformation is not easy to send, and the service life of the valve is prolonged; the annular boss and the second elastic sealing ring are matched with the surface of the valve plate together, so that the bidirectional sealing performance of the valve is improved, and bidirectional zero leakage is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 2;
description of reference numerals: 1. the valve comprises a valve body, 11, a screw hole, 2, a valve plate, 3, a valve rod, 31, an aluminum bronze shaft sleeve, 32, a wear-resistant layer, 33, a packing type shaft end sealing device, 34, a lubricating sealing layer, 35, a waterproof sealing bearing, 4, a valve body sealing ring, 41, a first elastic sealing ring, 411, a fifth annular groove, 412, a first magnetic ring, 413, a second magnetic ring, 42, a second elastic sealing ring, 421, a V-shaped elastic supporting block, 43, a fixing gasket, 431, a positioning hole, 432, a fourth elastic sealing ring, 433, a fifth elastic sealing ring, 44, a first annular groove, 45, a second annular groove, 46, an annular boss, 5, a pressing ring, 51, a fixing screw, 511, a threaded section, 512, a conical section, 52, an elastic ejector rod, 521, an extrusion block, 522, a top block, 523, a clamping groove, 524, a telescopic protective sleeve, 53, a third elastic sealing ring, 54, a third annular groove, 55, a waterproof sealing ring, a waterproof sealing, And (7) fixing holes.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
referring to figure 1: the embodiment of the utility model provides a double-eccentric butterfly valve, includes valve body 1, valve plate 2, valve rod 3, valve body sealing washer 4 and clamping ring 5, clamping ring 5 fixes valve body sealing washer 4 on valve body 1, valve rod 3 rotates and installs on valve body 1 to with valve plate 2 fixed connection, pneumatic actuator is connected to 3 upper ends of valve rod, is used for the drive to realize the valve switching, valve plate 2 and the sealed cooperation of valve body sealing washer 4.
As shown in the attached drawing 2, a first elastic sealing ring 41 is arranged between the valve body sealing ring 4 and the valve body 1, a second elastic sealing ring 42 is arranged between the valve body sealing ring 4 and the pressing ring 5, a fixing gasket 43, a first annular groove 44, a second annular groove 45 and an annular boss 46 are sequentially and integrally formed on the valve body sealing ring 4 from outside to inside, the fixing gasket is clamped and fixed between the valve body 1 and the pressing ring 5, the first annular groove 44 and the second annular groove 45 are respectively matched with the first elastic sealing ring 41 and the second elastic sealing ring, the annular boss 46 and the second annular groove 45 are oppositely arranged, the annular boss 46 and the second elastic sealing ring are tightly attached to the surface of the valve plate 2, a fixing component is arranged on the pressing ring 5 and comprises a fixing screw 51, an elastic ejector rod 52 and a third elastic sealing ring 53, the third elastic sealing ring 53 is arranged between the valve body 1 and the pressing ring 5, a third annular groove 54 for installing a third elastic sealing ring 53 is arranged on the surface of the outer ring of the compression ring 5, a fourth annular groove matched with the third elastic sealing ring 53 is formed on the inner wall of the valve body 1, a plurality of fixing holes 55 for mounting the fixing screws 51 are circumferentially distributed on the end surface of the compression ring 5, a communicating hole is arranged between the fixing hole 55 and the third annular groove 54 and is in sliding fit with the elastic mandril 52, the valve body 1 and the fixing gasket 43 are respectively provided with a screw hole 11 and a positioning hole 431 corresponding to the fixing hole 55, the shaft of the fixing screw 51 is provided with a thread section 511 and a conical section 512, the thread section 511 passes through the positioning hole 431 and is in threaded connection with the screw hole 11, one end of the elastic push rod 52 is in contact with the third elastic sealing ring 53, and the other end of the elastic push rod 52 is in contact with the side surface of the conical section 512. As shown in fig. 3, the elastic push rod 52 includes an extrusion block 521 and a top block 522 which are arranged at two ends, the extrusion block 521 is provided with a clamping groove 523 matched with the third elastic sealing ring 53, so that the contact area can be enlarged, the third elastic sealing ring 53 is not easy to crush, a spring is arranged between the extrusion block 521 and the top block 522, the elastic telescopic performance of the elastic push rod 52 is ensured, a telescopic protective sleeve 524 is sleeved outside the spring, the spring can be protected, the sealing performance of the communicating hole can be enhanced after deformation, two ends of the telescopic protective sleeve 524 are respectively fixedly connected with the extrusion block 521 and the top block 522, the top block 522 is attached to the side surface of the conical surface section 512, the top block 522 is of a round head structure, and the side surface of the sliding conical surface section 512 can be better matched.
Through the technical scheme, after the butterfly valve is closed, when the butterfly valve works under forward pressure, the annular boss 46 and the second elastic sealing ring on the valve body sealing ring 4 elastically deform along with the displacement of the valve plate 2, and the pressure of a medium acts on the position of the first annular groove 44, so that the forward sealing performance is ensured; when the sealing device works under reverse pressure, the pressure of the medium acts on the position of the second elastic sealing ring 42, so that the reverse sealing performance is ensured; the annular boss 46 and the second elastic sealing ring can be tightly attached to the surface of the valve plate 2 together to form a double-sealing structure, bidirectional zero leakage is achieved, meanwhile, the first elastic sealing ring 41 and the second elastic sealing ring 42 have the sealing and supporting effects, the elasticity of the valve body sealing ring 4 and the sealing performance of the two sides of the valve body sealing ring can be improved, when the two sealing rings deform, the deformation of part of the valve body sealing ring 4 can be absorbed, the valve seat is guaranteed not to generate plastic deformation, the sealing performance is ensured, abrasion compensation is improved, the abrasion failure of the sealing surface due to frequent opening and closing actions of the valve is not easy to cause, the opening adjusting frequency of the butterfly valve is about 60 times/h, and the annual adjusting frequency of a single valve exceeds the performance requirement of 50 ten thousand times. During clamping ring 5 fixed mounting, realize sealing through the cooperation of third elastic sealing ring 53, third annular groove 54 and fourth annular groove between clamping ring 5 and the valve body 1, when set screw 51 screws up, the side of conical surface section 512 promotes the inner of elasticity ejector pin 52, make elasticity ejector pin 52 stretch into third annular groove 54, compress tightly fixedly third elastic sealing ring 53, further improve the fastness of its sealing performance and clamping ring installation, and the spring action of elasticity ejector pin 52 can realize set screw 51, locking set screw 51 dismantles back elasticity ejector pin 52 and can return, thereby conveniently dismantle clamping ring 5.
A fourth elastic sealing ring 432 and a fifth elastic sealing ring 433 are fixedly bonded to one side of the fixing gasket 43, the diameter of the fourth elastic sealing ring 432 is smaller than that of the fifth elastic sealing ring 433, and the fixing hole 55 is located between the fourth elastic sealing ring 432 and the fifth elastic sealing ring 433. The fourth elastic sealing ring 432 and the fifth elastic sealing ring 433 can improve the sealing performance of the fixed gasket 43, reduce the contact area, and reduce the precision requirement on the sealing surface processed on the valve body.
Be equipped with aluminium bronze axle sleeve 31 between valve rod 3 and the valve body 1, avoid the valve rod to rotate wearing and tearing, be equipped with wearing layer 32 on the surface of valve rod 3, provide wear-resisting protection, can prolong the life of valve rod 3, aluminium bronze axle sleeve 31 upper portion is provided with filler formula axle head sealing device 33, be equipped with on the middle part inner wall of aluminium bronze axle sleeve 31 with lubricated sealing layer 34 that wearing layer 32 contacted, lubricated sealing layer 34 can reduce pivoted frictional force, reduces the wearing and tearing between valve rod 3 and the aluminium bronze axle sleeve 31, the bottom of aluminium bronze axle sleeve 31 is equipped with waterproof seal bearing 35, can make the rotation of lower extreme strong point more smooth and easy, makes the medium be difficult to flow into moreover and contact lubricated sealing layer 34. The packing type shaft end sealing device 33 and the waterproof sealing bearing 35 can form sealing on the upper part and the lower part of the aluminum bronze shaft sleeve 31, and the leakage-proof performance of the valve is improved.
First elastic seal 41 is the elastic metal sealing ring of cross sectional shape for the C type, and fifth annular groove 411 has been seted up to its side surface towards valve body 1, be fixed with first magnetosphere 412 and second magnetosphere 413 on the both sides inner wall of fifth annular groove 411 respectively, carry out mutual repulsion through magnetic force between first magnetosphere 412 and the second magnetosphere 413, can guarantee that fifth annular groove 411 is difficult to collapse, make first elastic seal 41's elasticity more lasting, sealing performance is better.
The groove type of second annular groove 45 is the V type, and one side of second elastic sealing ring 42 is equipped with V-arrangement elasticity supporting shoe 421 with second annular groove 45 fixed connection, can guarantee that second annular groove 45 is difficult to collapse, makes the elasticity of annular boss 46 department better, has better wearing and tearing compensation ability, improves the life of its sealed face.
A manufacturing method of a valve body sealing ring 4 in a double-eccentric butterfly valve comprises the following steps:
(1) blanking: calculating a proper size and properly reserving allowance according to the valve plates 2 of the valves with different calibers, and punching an annular plate on a stainless steel plate with a certain thickness;
(2) cutting: stacking and fixing the annular plates together by using a clamp, and placing the annular plates on a lathe for finish machining to obtain the accurate sizes of the inner diameter and the outer diameter;
(3) compression molding: placing the finely processed annular plate on a special die for stamping to form a fixed gasket 43, a first annular groove 44, a second annular groove 45 and an annular boss 46 structure;
(4) surface treatment: spraying a wear-resistant coating on the surface of the annular plate, wherein the thickness of the wear-resistant coating is 0.10-0.60 mm, and polishing the surface of the annular plate by using a polishing machine;
(5) punching: the positioning hole 431 is punched or drilled in the fixing washer 43.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (7)
1. The utility model provides a double-eccentric butterfly valve, includes valve body (1), valve plate (2), valve rod (3), valve body sealing washer (4) and clamping ring (5), clamping ring (5) are fixed valve body sealing washer (4) on valve body (1), valve rod (3) are rotated and are installed on valve body (1) to with valve plate (2) fixed connection, valve plate (2) and valve body sealing washer (4) seal cooperation, its characterized in that: be equipped with first elastic sealing ring (41) between valve body sealing washer (4) and valve body (1), be provided with second elastic sealing ring (42) between valve body sealing washer (4) and clamping ring (5), integrated into one piece has shim (43), first annular groove (44), second annular groove (45) and annular boss (46) in proper order by outer on valve body sealing washer (4), the shim centre gripping is fixed and between valve body (1) and clamping ring (5), first annular groove (44) and cooperate in first elastic sealing ring (41) and second elastic sealing ring respectively with second annular groove (45), annular boss (46) sets up with second annular groove (45) relatively, annular boss (46) and second elastic sealing ring all hug closely and set up in valve plate (2) surface, be equipped with fixed subassembly on clamping ring (5), the fixing assembly comprises a fixing screw (51), an elastic mandril (52) and a third elastic sealing ring (53), the third elastic sealing ring (53) is positioned between the valve body (1) and the pressing ring (5), a third annular groove (54) used for installing the third elastic sealing ring (53) is arranged on the surface of the outer ring of the pressing ring (5), a fourth annular groove matched with the third elastic sealing ring (53) is formed in the inner wall of the valve body (1), a plurality of fixing holes (55) used for installing the fixing screw (51) are circumferentially distributed in the end face of the pressing ring (5), a communicating hole is formed between the fixing hole (55) and the third annular groove (54), the communicating hole is in sliding fit with the elastic mandril (52), and a screw hole (11) and a positioning hole (431) are respectively arranged on the valve body (1) and the fixing gasket (43) corresponding to the fixing hole (55), a thread section (511) and a conical section (512) are arranged on the body of the fixing screw (51), the thread section (511) penetrates through the positioning hole (431) and is in threaded connection with the screw hole (11), one end of the elastic ejector rod (52) is in contact with the third elastic sealing ring (53), and the other end of the elastic ejector rod (52) is in contact with the side face of the conical section (512).
2. A double eccentric butterfly valve according to claim 1, characterized in that: one side of the fixed gasket (43) is fixedly bonded with a fourth elastic sealing ring (432) and a fifth elastic sealing ring (433), the diameter of the fourth elastic sealing ring (432) is smaller than that of the fifth elastic sealing ring (433), and the fixed hole (55) is located between the fourth elastic sealing ring (432) and the fifth elastic sealing ring (433).
3. A double eccentric butterfly valve according to claim 1, characterized in that: be equipped with aluminium bronze axle sleeve (31) between valve rod (3) and valve body (1), be equipped with wearing layer (32) on the surface of valve rod (3), aluminium bronze axle sleeve (31) upper portion is provided with filler formula axle head sealing device (33), be equipped with on the middle part inner wall of aluminium bronze axle sleeve (31) with lubricated sealing layer (34) that wearing layer (32) contacted, the bottom of aluminium bronze axle sleeve (31) is equipped with waterproof sealing bearing (35).
4. A double eccentric butterfly valve according to claim 1, characterized in that: elasticity ejector pin (52) are including setting up extrusion block (521) and kicking block (522) at both ends, be equipped with on extrusion block (521) with third elasticity sealing washer (53) complex draw-in groove (523), set up the spring between extrusion block (521) and kicking block (522), the spring overcoat is equipped with flexible protective sheath (524), the both ends difference fixed connection extrusion block (521) and kicking block (522) of flexible protective sheath (524), kicking block (522) are laminated mutually with the side of conical surface section (512).
5. A double eccentric butterfly valve according to claim 1, characterized in that: the first elastic sealing ring (41) is an elastic metal sealing ring with a C-shaped cross section, a fifth annular groove (411) is formed in the surface of one side, facing the valve body (1), of the first elastic sealing ring, a first magnetic ring (412) and a second magnetic ring (413) are fixed to the inner walls of the two sides of the fifth annular groove (411) respectively, and the first magnetic ring (412) and the second magnetic ring (413) are mutually repelled through magnetic force.
6. A double eccentric butterfly valve according to claim 1, characterized in that: the groove type of the second annular groove (45) is V-shaped, and one side of the second elastic sealing ring (42) is provided with a V-shaped elastic supporting block (421) fixedly connected with the second annular groove (45).
7. A manufacturing method of a valve body sealing ring in a double-eccentric butterfly valve is characterized by comprising the following steps: the method comprises the following steps:
(1) blanking: calculating a proper size and properly reserving allowance according to the valve plates (2) of the valves with different calibers, and punching an annular plate on a stainless steel plate with a certain thickness;
(2) cutting: stacking and fixing the annular plates together by using a clamp, and placing the annular plates on a lathe for finish machining to obtain the accurate sizes of the inner diameter and the outer diameter;
(3) compression molding: placing the finely processed annular plate on a special die for stamping to form a fixed gasket (43), a first annular groove (44), a second annular groove (45) and an annular boss (46) structure;
(4) surface treatment: spraying a wear-resistant coating on the surface of the annular plate, wherein the thickness of the wear-resistant coating is 0.10-0.60 mm, and polishing the surface of the annular plate by using a polishing machine;
(5) punching: a positioning hole (431) is punched or drilled in the fixing washer (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210075007.4A CN114413005B (en) | 2022-01-22 | 2022-01-22 | Double-eccentric butterfly valve and manufacturing method of valve body sealing ring thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210075007.4A CN114413005B (en) | 2022-01-22 | 2022-01-22 | Double-eccentric butterfly valve and manufacturing method of valve body sealing ring thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114413005A true CN114413005A (en) | 2022-04-29 |
| CN114413005B CN114413005B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210075007.4A Active CN114413005B (en) | 2022-01-22 | 2022-01-22 | Double-eccentric butterfly valve and manufacturing method of valve body sealing ring thereof |
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| CN (1) | CN114413005B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194749A (en) * | 1977-07-26 | 1980-03-25 | Applications Mecaniques Et Robinetterie Industrielle | Sealing ring |
| JP2000074220A (en) * | 1998-08-31 | 2000-03-14 | Nok Corp | Manufacture of seal device, and seal device |
| CN101644341A (en) * | 2009-08-22 | 2010-02-10 | 宁波一机阀门制造有限公司 | Method for manufacturing stainless steel sealing ring of double eccentric butterfly valve plate |
| JP2011117606A (en) * | 2011-02-15 | 2011-06-16 | Nsk Ltd | Manufacturing method for seal ring of shell-type needle roller bearing with seal ring |
| CN102537051A (en) * | 2006-06-08 | 2012-07-04 | 日本精工株式会社 | Drawn cup needle roller bearing having a seal ring and its manufacture method |
| CN103511643A (en) * | 2012-12-05 | 2014-01-15 | 宁津美华工业有限公司 | Double-eccentricity all-metal seal butterfly valve |
| DE202013009887U1 (en) * | 2013-11-29 | 2014-12-01 | Reinz-Dichtungs-Gmbh | Metallic flat gasket |
| CN104285346A (en) * | 2012-05-28 | 2015-01-14 | 日本特殊陶业株式会社 | Gasket and production method for same, and spark plug and production method for same |
| CN104653791A (en) * | 2015-02-10 | 2015-05-27 | 无锡智能自控工程股份有限公司 | Splitting type valve seat self-adjustable sealing three-eccentric butterfly valve |
| CN105443777A (en) * | 2016-02-01 | 2016-03-30 | 无锡智能自控工程股份有限公司 | Memory alloy sealed valve seat structure and dual-centrifugal butterfly valve with same |
| CN109808118A (en) * | 2019-02-26 | 2019-05-28 | 安徽沃尔顶密封工业有限公司 | 45 ° of O-ring seal molds of one kind and its processing method |
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2022
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| US4194749A (en) * | 1977-07-26 | 1980-03-25 | Applications Mecaniques Et Robinetterie Industrielle | Sealing ring |
| JP2000074220A (en) * | 1998-08-31 | 2000-03-14 | Nok Corp | Manufacture of seal device, and seal device |
| CN102537051A (en) * | 2006-06-08 | 2012-07-04 | 日本精工株式会社 | Drawn cup needle roller bearing having a seal ring and its manufacture method |
| CN101644341A (en) * | 2009-08-22 | 2010-02-10 | 宁波一机阀门制造有限公司 | Method for manufacturing stainless steel sealing ring of double eccentric butterfly valve plate |
| JP2011117606A (en) * | 2011-02-15 | 2011-06-16 | Nsk Ltd | Manufacturing method for seal ring of shell-type needle roller bearing with seal ring |
| CN104285346A (en) * | 2012-05-28 | 2015-01-14 | 日本特殊陶业株式会社 | Gasket and production method for same, and spark plug and production method for same |
| CN103511643A (en) * | 2012-12-05 | 2014-01-15 | 宁津美华工业有限公司 | Double-eccentricity all-metal seal butterfly valve |
| DE202013009887U1 (en) * | 2013-11-29 | 2014-12-01 | Reinz-Dichtungs-Gmbh | Metallic flat gasket |
| CN104653791A (en) * | 2015-02-10 | 2015-05-27 | 无锡智能自控工程股份有限公司 | Splitting type valve seat self-adjustable sealing three-eccentric butterfly valve |
| CN105443777A (en) * | 2016-02-01 | 2016-03-30 | 无锡智能自控工程股份有限公司 | Memory alloy sealed valve seat structure and dual-centrifugal butterfly valve with same |
| CN109808118A (en) * | 2019-02-26 | 2019-05-28 | 安徽沃尔顶密封工业有限公司 | 45 ° of O-ring seal molds of one kind and its processing method |
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| Publication number | Publication date |
|---|---|
| CN114413005B (en) | 2024-04-16 |
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