CN111911636B - Three-eccentric hard sealing butterfly valve - Google Patents

Three-eccentric hard sealing butterfly valve Download PDF

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Publication number
CN111911636B
CN111911636B CN202010766153.2A CN202010766153A CN111911636B CN 111911636 B CN111911636 B CN 111911636B CN 202010766153 A CN202010766153 A CN 202010766153A CN 111911636 B CN111911636 B CN 111911636B
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CN
China
Prior art keywords
telescopic
plate
rod
butterfly valve
shell
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Application number
CN202010766153.2A
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Chinese (zh)
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CN111911636A (en
Inventor
严涛
丁超
姜晨
汪中厚
果春焕
史中楼
李伟
朱海昌
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Jiangsu Sny Valve Co ltd
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Jiangsu Sny Valve Co ltd
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Priority to CN202010766153.2A priority Critical patent/CN111911636B/en
Publication of CN111911636A publication Critical patent/CN111911636A/en
Application granted granted Critical
Publication of CN111911636B publication Critical patent/CN111911636B/en
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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
    • 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
    • F16K1/32—Details
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F16L55/035—Noise absorbers in the form of specially adapted hangers or supports

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The invention discloses a triple eccentric hard seal butterfly valve which comprises an upper shell, a lower shell, a valve plate, a connecting rod and a rotating block, wherein the lower shell is arranged at the bottom end of the upper shell, second flanges are fixed on two sides of the lower shell, and reinforcing structures are arranged inside the upper shell and the lower shell. According to the invention, the upper shell and the lower shell form a clamping structure, the clamping structure is convenient to disassemble and assemble, after the upper shell is clamped into the lower shell, the shell is connected with the baffle through the first connecting plate and the second connecting plate at two ends, the elasticity of the spring at the top end of the baffle can press the fixing plate at the bottom end of the second connecting plate, the baffle and the fixing plate can clamp the first connecting plate and the second connecting plate in the middle to fix the shell, when the butterfly valve is disassembled and fails, the shell needs to be disassembled, the fixing plate is pulled open, and then the baffle is disassembled to disassemble the shell, so that the purpose of facilitating disassembly and assembly of the three-eccentric hard-sealed butterfly valve is achieved.

Description

Three-eccentric hard sealing butterfly valve
Technical Field
The invention relates to the technical field of sealed butterfly valves, in particular to a triple-eccentric hard sealed butterfly valve.
Background
With the continuous development of the society, the sealed butterfly valve industry has gained vigorous development, and three eccentric hard seal butterfly valves are one kind of valve, are eccentric metal seal structure, and the sealed form is metal to metal seal, and three eccentric hard seal butterfly valves are widely used in the industry pipelines such as metallurgy, electric power, petrochemical, plumbing and municipal construction, as the use of flow regulation and fluid cut-off.
Traditional this type of three eccentric hard seal butterfly valves are difficult to carry out the dismouting connection, and the damage appears easily in the seal butterfly valve, is difficult to take apart the butterfly valve when the seal butterfly valve damages and maintains, uses inconveniently.
Disclosure of Invention
The invention aims to provide a three-eccentric hard seal butterfly valve, which solves the problem that the three-eccentric hard seal butterfly valve is difficult to disassemble, assemble and connect in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: three eccentric hard seal butterfly valves, including last casing, lower casing, valve plate, connecting rod and rotatory piece, the bottom of going up the casing is provided with down the casing, and the both sides of casing all are fixed with the second flange down, the both sides of second flange all are provided with first flange, and the both sides of first flange all are provided with the fixed screw, go up the both ends of casing and install connection structure, the bottom of going up the casing is provided with the connecting rod, and the top of connecting rod installs rotatory piece, the bottom mounting of connecting rod has the valve plate, the inside of going up casing and casing down all is provided with additional strengthening.
Preferably, the bottom of going up the casing is provided with the fixture block, the top of casing is provided with the draw-in groove down, go up the casing and constitute the block structure with lower casing.
Preferably, connection structure includes first connecting plate, second connecting plate, baffle, spring and fixed plate, first connecting plate is installed at the both ends of last casing, the bottom of first connecting plate is provided with the second connecting plate, and the bottom of second connecting plate is provided with the fixed plate, the bottom mounting of fixed plate has the spring, the bottom mounting of spring has the baffle.
Preferably, bolts are arranged on two sides of the fixing screw and are arranged on two sides of the first flange at equal intervals.
Preferably, the outer side wall of the fixing screw is uniformly provided with external threads, the inner side wall of the first flange is uniformly provided with internal threads matched with the external threads, and the fixing screw is in threaded connection with the first flange.
Preferably, the reinforcing structure comprises a first reinforcing rib, a second reinforcing rib and a reinforcing layer, the reinforcing layer is arranged in the upper shell and the lower shell, the first reinforcing rib is arranged in the reinforcing layer, and the second reinforcing rib is arranged in the reinforcing layer.
Preferably, a seal ring groove is formed in the first flange, a seal ring is arranged in the seal ring groove, the width of the outer surface of the seal ring is smaller than that of the inner surface of the seal ring, so that the cross section of the seal ring is conical, an annular cavity is formed in the seal ring, an annular rod is arranged in the annular cavity and made of memory alloy, a slope surface corresponding to the seal ring is arranged on the inner surface of the seal ring groove, and the cross sections of the annular cavity and the annular rod are conical.
Preferably, the energy dissipation device further comprises an auxiliary energy dissipation device, the auxiliary energy dissipation device comprises two fastening solids, a middle flat plate and a bottom plate, a first groove and a plurality of inner insertion holes are formed in the lower surface of the middle flat plate, a cylindrical block corresponding to the first groove and a first vertical telescopic rod corresponding to the inner insertion holes are arranged on the bottom plate, a first wear-resistant elastic sheet is arranged between the middle flat plate and the bottom plate, a lower energy dissipation part corresponding to the fastening solids is arranged on the upper surface of the middle flat plate, the lower energy dissipation part comprises a lower fastening body, two lower support blocks, two second grooves and two second vertical telescopic rods, the two second grooves are located between the two second vertical telescopic rods, the lower support blocks are arranged in the second grooves, the lower fastening body is arranged in the two lower support blocks, and two telescopic clamping plates are arranged on the lower support blocks, the lower fastening body is provided with a middle flat plate and a middle flat plate, the middle flat plate is provided with a first groove, a first elastic wear-resistant piece is arranged between the two telescopic clamping plates, a first elastic wear-resistant piece supporting the lower fastening body is arranged in the first groove, a telescopic groove is formed in the lower supporting block, a top spring is arranged in the telescopic groove, the bottom of the telescopic clamping plate is located in the telescopic groove and connected with the upper end of the top spring, the end of the fastening body is provided with a second groove and an inverted L-shaped stop lever, a third elastic wear-resistant piece is arranged between the end of the lower fastening body and the L-shaped stop lever, the end of the lower fastening body stretches into the fourth groove and is connected with the fastening body through a fixing screw, and the end of the lower fastening body is connected.
Preferably, the second vertical telescopic rod comprises a telescopic sleeve, a telescopic inner rod, a second spring and a third spring, the telescopic sleeve is connected to the middle flat plate, the second spring is arranged in the telescopic sleeve, the lower end of the telescopic inner rod is located in the telescopic sleeve and connected to the upper end of the second spring, the upper end of the telescopic inner rod is located in the through hole of the lower fastening body, a blocking ring is arranged on the telescopic inner rod, and the third spring is arranged on the blocking ring and the telescopic inner rod between the telescopic sleeve.
Preferably, a wear-resistant elastic sleeve is arranged in the through hole and sleeved at the upper end of the telescopic inner rod.
Compared with the prior art, the invention has the beneficial effects that: the triple eccentric hard seal butterfly valve not only realizes the purpose that the triple eccentric hard seal butterfly valve is convenient to disassemble, assemble and connect, realizes the purpose that the triple eccentric hard seal butterfly valve is convenient to connect with other pipelines, but also realizes the purpose of strengthening the structural strength of the triple eccentric hard seal butterfly valve;
(1) the clamping structure is formed by the upper shell and the lower shell and is convenient to disassemble and assemble, after the upper shell is clamped into the lower shell, the shell is connected with the baffle through the first connecting plate and the second connecting plate at two ends, the fixed plate is pressed at the bottom end of the second connecting plate through the elasticity of a spring at the top end of the baffle, the first connecting plate and the second connecting plate can be clamped between the baffle and the fixed plate to fix the shell, when the butterfly valve is disassembled and fails, the shell is required to be disassembled by pulling the fixed plate open, and then the shell can be disassembled by disassembling the baffle, so that the purpose of facilitating the disassembly and assembly of the three-eccentric hard sealing butterfly valve is achieved;
(2) the second flange is arranged on one side of the first flange, the first flange and the second flange form a clamping structure, the first flange is arranged on the butterfly valve, the second flange is arranged on a pipeline to be connected, the first flange is clamped into the second flange, and the first flange and the second flange can be fixed together through fixing screws and bolts, so that other pipelines and the butterfly valve can be fixed together, and the purpose of connecting the three-eccentric hard-seal butterfly valve with other pipelines is achieved;
(3) through the inside at the enhancement layer be provided with first strengthening rib and second strengthening rib, first strengthening rib is vertically, and the second strengthening rib is transversely, and first strengthening rib and second strengthening rib are crisscross each other, and the material of first strengthening rib and second strengthening rib can be the steel material, and the structural strength of butterfly valve can be strengthened to first strengthening rib and second strengthening rib to this reaches the purpose of strengthening the eccentric butterfly valve structural strength that seals firmly of three.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic side view of the cross-sectional structure of the present invention;
FIG. 3 is a schematic view of the front view of the valve plate of the present invention;
FIG. 4 is an enlarged front view of a portion of a cross-section of the reinforcement structure of the present invention.
Figure 5 is a schematic view of the structure of the auxiliary energy dissipater of the present invention.
Fig. 6 is a cross-sectional schematic view of a seal ring of the present invention.
Figure 7 is a front view of the structure of the auxiliary dissipater of the present invention.
Fig. 8 is a structural schematic view of the lower support block of the present invention.
Fig. 9 is a top view of the structure of the base plate of the present invention.
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. 1-4, an embodiment of the present invention is shown: the triple-eccentric hard seal butterfly valve comprises an upper shell 1, a lower shell 2, a valve plate 6, a connecting rod 9 and a rotating block 10, wherein the lower shell 2 is arranged at the bottom end of the upper shell 1, a clamping block is arranged at the bottom end of the upper shell 1, a clamping groove is arranged at the top end of the lower shell 2, and the upper shell 1 and the lower shell 2 form a clamping structure;
second flanges 4 are fixed on two sides of the lower shell 2, first flanges 3 are arranged on two sides of each second flange 4, the first flanges 3 and the second flanges 4 form a clamping structure, fixing screws 8 are arranged on two sides of each first flange 3, bolts 7 are arranged on two sides of each fixing screw 8, and the bolts 7 are arranged on two sides of each first flange 3 at equal intervals;
external threads are uniformly arranged on the outer side wall of the fixing screw 8, internal threads matched with the external threads are uniformly arranged on the inner side wall of the first flange 3, and the fixing screw 8 is in threaded connection with the first flange 3;
the connecting structures 5 are mounted at two ends of the upper shell 1, each connecting structure 5 comprises a first connecting plate 501, a second connecting plate 502, a baffle 503, a spring 504 and a fixing plate 505, the first connecting plates 501 are mounted at two ends of the upper shell 1, the second connecting plate 502 is arranged at the bottom end of each first connecting plate 501, the fixing plate 505 is arranged at the bottom end of each second connecting plate 502, the spring 504 is fixed at the bottom end of each fixing plate 505, and the baffle 503 is fixed at the bottom end of each spring 504;
specifically, when the structure is used, firstly, the upper shell 1 and the lower shell 2 form a clamping structure, the clamping structure is convenient to detach and mount, after the upper shell 1 is clamped into the lower shell 2, the shells are connected with a baffle 503 through a first connecting plate 501 and a second connecting plate 502 at two ends, the fixing plate 505 is pressed at the bottom end of the second connecting plate 502 through the elasticity of a spring 504 at the top end of the baffle 503, the baffle 503 and the fixing plate 505 can clamp the first connecting plate 501 and the second connecting plate 502 in the middle to fix the shells, when the butterfly valve is detached and fails, and the shells need to be detached, the fixing plate 505 is pulled open, and then the shells can be detached by detaching the baffle 503;
a connecting rod 9 is arranged at the bottom end of the upper shell 1, a rotating block 10 is mounted at the top end of the connecting rod 9, a valve plate 6 is fixed at the bottom end of the connecting rod 9, reinforcing structures 11 are arranged inside the upper shell 1 and the lower shell 2, each reinforcing structure 11 comprises a first reinforcing rib 1101, a second reinforcing rib 1102 and a reinforcing layer 1103, the reinforcing layers 1103 are arranged inside the upper shell 1 and the lower shell 2, the first reinforcing ribs 1101 are arranged inside the reinforcing layers 1103, and the second reinforcing ribs 1102 are arranged inside the reinforcing layers 1103;
specifically, when the structure is used, firstly, the first reinforcing rib 1101 is vertical, the second reinforcing rib 1102 is horizontal, the first reinforcing rib 1101 and the second reinforcing rib 1102 are staggered, the first reinforcing rib 1101 and the second reinforcing rib 1102 can be made of steel materials, and the first reinforcing rib 1101 and the second reinforcing rib 1102 can reinforce the structural strength of the butterfly valve.
The working principle is as follows: when the butterfly valve is used, firstly, the rotating block 10 is connected with the valve plate 6 through the connecting rod 9, the valve plate 6 can be rotated by rotating the rotating block 10, the water quantity which can pass through the butterfly valve can be controlled by adjusting the angle of the valve plate 6, the upper shell 1 and the lower shell 2 form a clamping structure, the clamping structure is convenient to detach and install, after the upper shell 1 is clamped into the lower shell 2, the shells are connected with the baffle 503 through the first connecting plate 501 and the second connecting plate 502 at two ends, the fixing plate 505 is pressed at the bottom end of the second connecting plate 502 by the elasticity of the spring 504 at the top end of the baffle 503, the baffle 503 and the fixing plate 505 can clamp the first connecting plate 501 and the second connecting plate 502 in the middle, the shells are fixed, when the butterfly valve is detached and the shells need to be detached, the fixing plate 505 is pulled open;
secondly, the first flange 3 and the second flange 4 form a clamping structure, the first flange 3 is installed on a butterfly valve, the second flange 4 is installed on a pipeline 14 needing to be connected, then the first flange 3 is clamped into the second flange 4, the first flange 3 and the second flange 4 can be fixed together through a fixing screw 8 and a bolt 7, and therefore other pipelines and the butterfly valve can be fixed together;
finally, the first reinforcing rib 1101 is vertical, the second reinforcing rib 1102 is horizontal, the first reinforcing rib 1101 and the second reinforcing rib 1102 are staggered, the first reinforcing rib 1101 and the second reinforcing rib 1102 can be made of steel materials, and the first reinforcing rib 1101 and the second reinforcing rib 1102 can reinforce the structural strength of the butterfly valve.
Referring to fig. 5 to 9, further, a seal ring groove 12 is disposed on the first flange, a seal ring 13 is disposed in the seal ring groove 12, and since the seal ring 13 is in a compression deformation state during use, the seal ring is deformed after a long time, and the sealing effect is reduced, in the present invention, the seal ring 13 is structurally improved, that is, the width of the outer surface of the seal ring 13 is smaller than the width of the inner surface, so that the cross section of the seal ring 13 is tapered, an annular cavity 131 is disposed in the seal ring 13, an annular rod 132 is disposed in the annular cavity 131, the annular rod 132 is made of a memory alloy, a slope corresponding to the seal ring 13 is disposed on the inner surface of the seal ring groove 12, and the cross sections of the annular cavity 131 and the annular rod 132 are both tapered.
The end of the corresponding pipe 14 is also designed with a seal ring groove 12, and the inner surface of the seal ring groove 12 is provided with a slope corresponding to the seal ring 13, so that the seal ring 13 is positioned in the two seal ring grooves 12, the seal ring 13 is extruded, and the inner annular rod 132 is extruded at the same time, but the cross section of the annular rod 132 is conical, so that the annular rod 132 has the function of deformation resistance, and moreover, the annular rod 132 is made of memory alloy, so that the annular rod 132 has the function of torsion deformation resistance, so that the seal ring 13 can not deform even if the seal ring 13 is used for a long time, and the sealing effect can not be reduced.
Furthermore, in order to perform the energy dissipation function on the pipeline 14, an auxiliary energy dissipation device 30 is arranged in the invention; the auxiliary energy dissipater 30 comprises two tightening solids 301, a middle plate 302 and a bottom plate 303, wherein a first groove 304 and a plurality of inner insertion holes 305 are arranged on the lower surface of the middle plate 302, a cylindrical block 306 corresponding to the first groove 304 and a first vertical telescopic rod 307 corresponding to the inner insertion holes 305 are arranged on the bottom plate 303, a first wear-resistant elastic sheet 308 is arranged between the middle plate 302 and the bottom plate 303, a lower energy dissipation part corresponding to the tightening solids 301 is arranged on the upper surface of the middle plate 302, the lower energy dissipation part comprises a lower fastening body 309, two lower supporting blocks 310, two second grooves 311 and two second vertical telescopic rods 312, the two second grooves 311 are located between the two second vertical telescopic rods 312, the lower supporting blocks 310 are arranged in the second grooves 311, and the lower fastening body 309 is arranged in the two lower supporting blocks 310, two telescopic clamping plates 313 are arranged on the lower supporting block 310, a third groove is arranged between the two telescopic clamping plates 313, a second wear-resistant elastic sheet for supporting the lower fastening body 309 is arranged in the third groove, a telescopic groove 314 is arranged on the lower supporting block 310, an inner top spring 315 is arranged in the telescopic slot 314, the bottom of the telescopic clamping plate 313 is positioned in the telescopic slot 314 and is connected with the upper end of the inner top spring 315, the end of the tightening solid 301 is provided with a fourth recess 316 and an inverted L-shaped bar 317, a third wear-resistant elastic sheet 318 is arranged between the end of the lower fastening body 309 and the L-shaped stop bar 317, the end of the lower fastening body 309 extends into the fourth recess 316 and is connected with the tightening solid 301 by means of a fixing screw 319, the end of the lower fastening body 309 is connected to the middle plate 302 by the second vertical telescopic rod 312.
The auxiliary energy dissipater 30 is installed on the pipeline 14, the two tightening solids 301 are respectively connected with the two lower fastening bodies 309 and located on one side of the first flange 3, specifically, the lower fastening bodies 309 are fixedly connected with the tightening solids 301 through fixing screws 319 and further fixed on the pipeline 14, the middle flat plate 302 is provided with a second groove 311, the lower support block 310 is arranged in the second groove 311, the pipeline 14 presses the lower support block 310 on the lower support block 310 into the telescopic groove 314, the telescopic clamping plates 313 press the inner top spring 315 in the telescopic groove 314 downwards, the pipeline 14 contacts the lower fastening bodies 309, and the two telescopic clamping plates 313 play a role in protecting and supporting the second wear-resistant elastic sheet 320 and the pipeline 14; meanwhile, the end of the lower fastening body 309 prevents the lower fastening body 309 from deforming in the horizontal direction due to the supporting effect of the third wear-resistant elastic sheet 318 and the L-shaped stop bar 317, the lower fastening body 309 moves downwards and is compressed to the second vertical telescopic rod 312, and the second vertical telescopic rod 312 also plays a role in supporting the lower fastening body 309, so that the telescopic clamp plate 313, the second vertical telescopic rod 312 and the second wear-resistant elastic sheet 320 play a role in dissipating energy and reducing vibration while the upper fastening body 301 and the lower fastening body 309 fix the pipeline 14; the lower surface of the middle flat plate 302 is provided with a first groove 304 and a plurality of inner inserting holes 305, the bottom plate 303 is provided with a cylindrical block 306 corresponding to the first groove 304 and a first vertical telescopic rod 307 corresponding to the inner inserting holes 305, and then the bottom plate 303 plays a role in supporting, dissipating energy and reducing vibration for the middle flat plate 302.
Further, the second vertical telescopic rod 312 includes a telescopic sleeve 3121, a telescopic inner rod 3122, a second spring 3123, and a third spring 3124, the telescopic sleeve 3121 is connected to the middle plate 302, the second spring 3123 is disposed in the telescopic sleeve 3121, the lower end of the telescopic inner rod 3122 is located in the telescopic sleeve 3121 and is connected to the upper end of the second spring 3123, the upper end of the telescopic inner rod 3122 is located in the through hole 3091 of the lower fastening body 309, a stop ring 3125 is disposed on the telescopic inner rod 3122, and the third spring 3124 is disposed on the telescopic inner rod 3122 between the stop ring 3125 and the telescopic sleeve 3121.
When the second vertical telescopic rod 312 is vibrated up and down, the tightening solid 301 and the lower fastening body 309 squeeze the retaining ring 3125 on the second vertical telescopic rod 312, so that the telescopic inner rod 3122 in the second vertical telescopic rod 312 is compressed downwards, the second spring 3123 and the third spring 3124 are compressed simultaneously, energy dissipation and vibration reduction are performed on generated vibration, and then under the reset action of the second spring 3123 and the third spring 3124, the second vertical telescopic rod 312 resets upwards to the original position and also plays a role in energy dissipation and vibration reduction on the upward vibration.
Further, a wear-resistant bullet sleeve 3092 is arranged in the through hole 3091, and the wear-resistant bullet sleeve 3092 is sleeved at the upper end of the telescopic inner rod 3122.
Because the pipeline 14 has horizontal vibration unavoidably to the through-hole 3091 is stretched into to the upper end of flexible interior pole 3122, so pipeline 14 horizontal vibration can produce horizontal shearing force to flexible interior pole 3122, so design wear-resisting bullet cover 3092 in through-hole 3091, wear-resisting bullet cover 3092 can reduce the effect of horizontal shearing force to flexible interior pole 3122, and then plays the guard action.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. Three eccentric butterfly valves sealed firmly, including last casing (1), casing (2) down, valve plate (6), connecting rod (9) and rotatory piece (10), its characterized in that: the bottom end of the upper shell (1) is provided with a lower shell (2), two sides of the lower shell (2) are fixed with second flanges (4), two sides of each second flange (4) are provided with first flanges (3), two sides of each first flange (3) are provided with fixing screws (8), two ends of the upper shell (1) are provided with connecting structures (5), the bottom end of the upper shell (1) is provided with a connecting rod (9), the top end of each connecting rod (9) is provided with a rotating block (10), the bottom end of each connecting rod (9) is fixed with a valve plate (6), and reinforcing structures (11) are arranged inside the upper shell (1) and the lower shell (2);
the energy dissipation device comprises an auxiliary energy dissipation device (30), the auxiliary energy dissipation device (30) comprises two tightening solids (301), a middle flat plate (302) and a bottom plate (303), a first groove (304) and a plurality of inner insertion holes (305) are formed in the lower surface of the middle flat plate (302), a cylindrical block (306) corresponding to the first groove (304) and a first vertical telescopic rod (307) corresponding to the inner insertion holes (305) are arranged on the bottom plate (303), a first wear-resistant elastic sheet (308) is arranged between the middle flat plate (302) and the bottom plate (303), a lower energy dissipation part corresponding to the tightening solids (301) is arranged on the upper surface of the middle flat plate (302), the lower energy dissipation part comprises a lower tightening body (309), two lower support blocks (310), two second grooves (311) and two second vertical telescopic rods (312), and the two second grooves (311) are located between the two second vertical telescopic rods (312), the lower supporting blocks (310) are arranged in the second grooves (311), the lower fastening bodies (309) are arranged in the two lower supporting blocks (310), the lower supporting blocks (310) are provided with two telescopic clamping plates (313), a third groove is formed between the two telescopic clamping plates (313), a second wear-resistant elastic sheet (320) for supporting the lower fastening bodies (309) is arranged in the third groove, the lower supporting blocks (310) are provided with telescopic grooves (314), inner top springs (315) are arranged in the telescopic grooves (314), the bottoms of the telescopic clamping plates (313) are positioned in the telescopic grooves (314) and connected with the upper ends of the inner top springs (315), the end parts of the tightening solid (301) are provided with fourth grooves (316) and inverted L-shaped stop rods (317), and third wear-resistant elastic sheets (318) are arranged between the end parts of the lower fastening bodies (309) and the L-shaped stop rods (317), the end of the lower fastening body (309) extends into the fourth groove (316) and is connected with the tightening solid (301) through a fixing screw (319), and the end of the lower fastening body (309) is connected with the middle flat plate (302) through the second vertical telescopic rod (312).
2. The triple offset hard seal butterfly valve of claim 1, wherein: the bottom of going up casing (1) is provided with the fixture block, the top of casing (2) is provided with the draw-in groove down, go up casing (1) and casing (2) down and constitute the block structure.
3. The triple offset hard seal butterfly valve of claim 1, wherein: connection structure (5) include first connecting plate (501), second connecting plate (502), baffle (503), spring (504) and fixed plate (505), first connecting plate (501) are installed at the both ends of last casing (1), the bottom of first connecting plate (501) is provided with second connecting plate (502), and the bottom of second connecting plate (502) is provided with fixed plate (505), the bottom mounting of fixed plate (505) has spring (504), the bottom mounting of spring (504) has baffle (503).
4. The triple offset hard seal butterfly valve of claim 1, wherein: bolts (7) are arranged on two sides of the fixing screw (8), and the bolts (7) are arranged on two sides of the first flange (3) at equal intervals.
5. The triple offset hard seal butterfly valve of claim 1, wherein: the outer side wall of the fixed screw (8) is evenly provided with external threads, the inner side wall of the first flange (3) is evenly provided with internal threads matched with the external threads, and the fixed screw (8) is in threaded connection with the first flange (3).
6. The triple offset hard seal butterfly valve of claim 1, wherein: the reinforcing structure (11) comprises a first reinforcing rib (1101), a second reinforcing rib (1102) and a reinforcing layer (1103), the reinforcing layer (1103) is arranged inside the upper shell (1) and the lower shell (2), the first reinforcing rib (1101) is arranged inside the reinforcing layer (1103), and the second reinforcing rib (1102) is arranged inside the reinforcing layer (1103).
7. The triple-eccentric hard seal butterfly valve according to claim 1, wherein a seal ring groove (12) is formed in the first flange, a seal ring (13) is arranged in the seal ring groove (12), the width of the outer surface of the seal ring (13) is smaller than that of the inner surface, so that the cross section of the seal ring (13) is conical, an annular cavity (131) is arranged in the seal ring (13), an annular rod (132) is arranged in the annular cavity (131), the annular rod (132) is made of memory alloy, the inner surface of the seal ring groove (12) is provided with a slope corresponding to the seal ring (13), and the cross sections of the annular cavity (101) and the annular rod (132) are both conical.
8. The triple eccentric hard seal butterfly valve according to claim 1, wherein the second vertical telescopic rod (312) comprises a telescopic sleeve (3121), a telescopic inner rod (3122), a second spring (3123) and a third spring (3124), the telescopic sleeve (3121) is connected to the middle plate (302), the second spring (3123) is disposed in the telescopic sleeve (3121), the lower end of the telescopic inner rod (3122) is located in the telescopic sleeve (3121) and is connected to the upper end of the second spring (3123), the upper end of the telescopic inner rod (3122) is located in the through hole (3091) of the lower fastening body (309), a stopper ring (3125) is disposed on the telescopic inner rod (3122), and the third spring (3124) is disposed on the telescopic inner rod (3122) between the stopper ring (3125) and the telescopic sleeve (3121).
9. The triple eccentric hard seal butterfly valve according to claim 8, wherein a wear-resistant elastic sleeve (3092) is arranged in the through hole (3091), and the wear-resistant elastic sleeve (3092) is sleeved on the upper end of the telescopic inner rod (3122).
CN202010766153.2A 2020-08-03 2020-08-03 Three-eccentric hard sealing butterfly valve Active CN111911636B (en)

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CN117967805B (en) * 2024-04-01 2024-05-28 南通市力沛流体阀业有限公司 Wear-resistant sealing butterfly valve

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DE19922938B4 (en) * 1998-05-20 2012-04-26 F.I.P. Formatura Iniezione Polimeri S.P.A. Throttle valve for a pipeline in water supply, chemical and similar plants
CN201202860Y (en) * 2008-05-26 2009-03-04 陈红 Low pressure regulating valve of gas meter
CN201443619U (en) * 2009-05-25 2010-04-28 张振佳 Rubber tube mechanical valve capable of realizing quick opening and closing
CN204533575U (en) * 2015-01-15 2015-08-05 中美塘阀（天津）科技有限公司 Soft backrest type flange butterfly
CN205859170U (en) * 2016-07-08 2017-01-04 济南安堡医药设备有限公司 The split type butterfly valve of α, β
CN110985723A (en) * 2019-12-06 2020-04-10 湖南天泓液压机械有限公司 Overpressure valve for hydraulic device

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