CN117090946A - Sealed waterproof hammer biax does not have single eccentric butterfly valve of round pin - Google Patents

Sealed waterproof hammer biax does not have single eccentric butterfly valve of round pin Download PDF

Info

Publication number
CN117090946A
CN117090946A CN202310912770.2A CN202310912770A CN117090946A CN 117090946 A CN117090946 A CN 117090946A CN 202310912770 A CN202310912770 A CN 202310912770A CN 117090946 A CN117090946 A CN 117090946A
Authority
CN
China
Prior art keywords
valve rod
valve
hole
butterfly plate
valve body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310912770.2A
Other languages
Chinese (zh)
Inventor
林松道
王儒林
童幸奇
王科杰
江森
蒲伟
季磊磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Valve Manufacturing Co ltd
Original Assignee
Wenling Institute Of Fluid Machinery Jiangsu University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wenling Institute Of Fluid Machinery Jiangsu University filed Critical Wenling Institute Of Fluid Machinery Jiangsu University
Priority to CN202310912770.2A priority Critical patent/CN117090946A/en
Publication of CN117090946A publication Critical patent/CN117090946A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16K1/222—Shaping of the valve member
    • 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
    • F16K1/224—Details of bearings for the axis of rotation
    • 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
    • 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
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement

Landscapes

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

Abstract

The invention discloses a sealed waterproof hammer double-shaft pin-free single eccentric butterfly valve, which comprises a valve body, a valve rod, a butterfly plate and a driving device; the valve body is provided with a cavity, the butterfly plate is arranged in the cavity, and the top and the bottom of the valve body are respectively provided with a first through hole and a second through hole which are communicated with the cavity; the valve rod comprises an upper valve rod and a lower valve rod, the upper valve rod passes through the first through hole and is connected with the butterfly plate, the lower valve rod passes through the second through hole and is rotatably connected with the butterfly plate, the butterfly plate can move relative to the lower valve rod along the axial direction of the lower valve rod, and the lower valve rod and the upper valve rod are coaxially arranged; the upper valve rod and the first through hole are internally provided with matched threads, and when the upper valve rod rotates in the first through hole, the butterfly plate is driven to rotate and is driven to move along the axial direction of the lower valve rod; one end of the lower valve rod, which is away from the butterfly plate, is connected with an end cover, and the end cover is connected with the valve body. The sealing waterproof hammer double-shaft pin-free single-eccentric butterfly valve adopts a double-shaft pin-free structure, the structure of the butterfly valve is simplified through threaded connection of the valve rod and the valve body, and when the valve is opened, the butterfly plate is separated from the lower valve rod, so that leakage caused by friction and abrasion of the end of the lower valve rod is eliminated.

Description

Sealed waterproof hammer biax does not have single eccentric butterfly valve of round pin
Technical Field
The invention relates to the technical field of valves, in particular to a double-shaft pin-free single-eccentric butterfly valve for a sealing waterproof hammer.
Background
The butterfly valve is also called as a flap valve, is a regulating valve with a relatively simple structure, can be used for controlling the flow of various fluids such as water, steam, slurry, oil products, liquid metal, radioactive media and the like, and mainly plays roles of cutting off and throttling in various systems. The related problems of the butterfly valve mainly occur in the sealing problem, and due to improper sealing, the phenomena of running, overflowing, dripping, leaking and the like of the valve can be caused, related energy loss can be caused, even some toxic fluid can leak, related harm can be caused by a human body, the environment is polluted, and the surrounding ecological system is influenced to a certain extent. The traditional butterfly valve structure is too complicated, and whole weight is overweight, is unfavorable for using, and extravagant economy is not good to install.
In order to solve the trouble of valve leakage and mutual extrusion of the butterfly plate and the valve seat, the service efficiency of the valve is improved, the safety of the valve during operation is improved, and the resource cost is saved. The invention designs a double-shaft pin-free single eccentric butterfly valve for sealing a waterproof hammer to achieve the purpose.
Disclosure of Invention
The invention designs a sealed waterproof hammer double-shaft pinless single-eccentric butterfly valve, which is characterized in that when in operation, a valve is opened by rotating a handle to allow fluid to pass through; on the other hand, when the operation is completed, the valve is closed by rotating the handle, and the fluid in the pipeline is shut off.
The invention realizes the technical purposes by the following technical means:
a sealing waterproof hammer double-shaft pin-free single eccentric butterfly valve comprises a valve body, a valve rod, a butterfly plate and a driving device;
the valve body is provided with a cavity, the butterfly plate is arranged in the cavity, and the top and the bottom of the valve body are respectively provided with a first through hole and a second through hole which are communicated with the cavity;
the valve rod comprises an upper valve rod and a lower valve rod, the upper valve rod penetrates through the first through hole and is connected with the butterfly plate, the lower valve rod penetrates through the second through hole and is rotatably connected with the butterfly plate, the butterfly plate can move relative to the lower valve rod along the axial direction of the lower valve rod, and the lower valve rod and the upper valve rod are coaxially arranged;
the upper valve rod and the first through hole are internally provided with matched threads, and when the upper valve rod rotates in the first through hole, the butterfly plate is driven to rotate and is driven to move along the axial direction of the lower valve rod;
one end of the lower valve rod, which is away from the butterfly plate, is connected with an end cover, and the end cover is connected with the valve body;
the driving device is connected with the upper valve rod, and drives the upper valve rod to rotate through the driving device, so that the butterfly plate is driven to rotate relative to the lower valve rod, and the opening and closing functions of the valve are realized.
Further, the butterfly plate comprises a single eccentric butterfly plate, and the axes of the upper valve rod and the lower valve rod deviate from the central line of the single eccentric butterfly plate;
a positioning block is arranged at the joint of the single eccentric butterfly plate and the upper valve rod; the upper valve rod is provided with a positioning groove matched with the positioning block, and the positioning block is inserted into the positioning groove to relatively fix the single eccentric butterfly plate and the upper valve rod;
two small protruding magnetic blocks are arranged on two opposite sides of the single eccentric butterfly plate, grooves matched with the small magnetic blocks are formed in the valve body, and when the valve is closed, the small magnetic blocks are embedded into the grooves and are adsorbed.
Further, the driving device comprises a valve cover and a handle, wherein the valve cover is connected with the upper valve rod, and the handle is vertically connected to the side edge of the valve cover.
Further, a first hexagon bolt hole and a second hexagon bolt hole are symmetrically arranged on two sides of the second through hole, a connecting hole matched with the first hexagon bolt hole and the second hexagon bolt hole is formed in the end cover, and the end cover and the valve body are connected through the hexagon bolt penetrating through the connecting hole and the connecting hole of the first hexagon bolt hole and the connecting hole of the second hexagon bolt hole respectively;
a packing is filled between the lower valve rod and the valve body, a second packing pressing plate is sleeved on the lower valve rod, and the packing is pressed by the second packing pressing plate to form packing seal;
a third hexagon bolt hole is formed in the top end of the valve body, and a hexagon bolt facing the valve cover is arranged in the third hexagon bolt hole; and a spring washer is arranged between the third hexagon head bolt hole and the valve body.
Further, the side wall forming the first through hole comprises a first side wall close to the butterfly plate and a second side wall far away from the butterfly plate, threads matched with the upper valve rod are arranged on the first side wall, and the diameter of the through hole surrounded by the second side wall increases gradually from one side close to the butterfly plate to one side far away from the butterfly plate;
the packing is filled between the upper valve rod and the valve body, a first packing pressing plate is sleeved on the upper valve rod, and the packing is pressed by the first packing pressing plate to form packing seal.
Further, a second inner hexagonal cylindrical head screw hole and a third inner hexagonal cylindrical head screw hole are symmetrically arranged on the first packing pressing plate, two screw holes matched with the second inner hexagonal cylindrical head screw hole and the third inner hexagonal cylindrical head screw hole are arranged on the second side wall, and the second inner hexagonal cylindrical head screw hole, the third inner hexagonal cylindrical head screw hole and the corresponding screw holes are respectively inserted into and tightened by the two inner hexagonal cylindrical head screws, so that the first packing pressing plate is connected with the valve body.
Further, an O-shaped ring is arranged on one side, facing the valve body, of the end cover;
and a packing support ring is arranged below the first packing pressing plate, and a rubber sealing ring is sleeved outside the packing support ring.
Further, a lower shaft sleeve is arranged between the valve body and the lower valve rod, and an upper shaft sleeve is arranged between the valve body and the upper valve rod;
the middle part of the upper shaft sleeve is provided with a spacing ring, and the spacing ring is clung to the valve body.
Further, an exhaust hole is formed in the valve body, a film, a swing rod and a floater are arranged in the exhaust hole, the floater can float up and down in the exhaust hole, the film is arranged at the uppermost end of the exhaust hole, the swing rod is hinged to the wall surface and connected with the floater, and when the floater floats to the uppermost end, the swing rod horizontally and just blocks the exhaust hole.
The invention is realized by the following steps:
first, the valve body, the valve rod, the butterfly plate, the end cover, the driving device and the corresponding matched parts are assembled.
Closing the valve: the handle is rotated, the handle drives the valve cover to rotate, the valve cover drives the upper valve rod to rotate downwards, the upper valve rod rotates to drive the single eccentric butterfly plate to rotate, meanwhile, the single eccentric butterfly plate also rotates around the lower valve rod, the single eccentric butterfly plate starts to rotate from a position which is 90 degrees with the central line of the valve until the single eccentric butterfly plate and the central line of the valve form 0 degree, so that the valve is closed, the axis of the valve rod deviates from the center of the single eccentric butterfly plate due to the eccentric design of the single eccentric butterfly plate, and the single eccentric butterfly plate is separated from the lower valve rod when the valve is opened, so that the upper end and the lower end of the single eccentric butterfly plate are not turned into a rotation center, and leakage caused by friction abrasion of the upper valve rod end and the lower valve rod end is eliminated, and the valve rod is in a closed state forever due to the fact that the valve rod is in bolted connection;
opening the valve: the handle is rotated, the handle drives the valve cover and the upper valve rod to rotate, the upper valve rod is rotated upwards and drives the single eccentric butterfly plate to start rotating, the single eccentric butterfly plate starts rotating from a position with an included angle of 0 degrees with the central line of the valve body, so that the valve is gradually opened, and when the single eccentric butterfly plate is changed from a central line clamping angle of the valve body to 90 degrees, the valve is completely opened.
By the technical scheme, the invention has the following beneficial effects:
1. the upper valve rod is connected with the first through hole of the valve body through threads, the opening and the closing of the sealing waterproof hammer double-shaft pin-free single eccentric butterfly valve can be controlled by tightening or loosening the upper valve rod,
2. when the valve is started and closed, the sealing performance of the valve is enhanced due to the eccentric design of the single eccentric butterfly plate, so that the leakage of fluid is effectively prevented, and the service efficiency of the valve is improved;
3. because the valve adopts a double-shaft pin-free structure, the structure is simplified, the weight is reduced, and the materials are saved;
4. the difficulty of opening and closing the valve is reduced due to the unilateral design of the handle, and the occupied space of the valve is reduced due to the vertical design of the handle;
5. due to the design of the exhaust hole of the valve, the gas in the fluid can be exhausted, so that the occurrence of water hammer caused by the existence of the gas is prevented;
6. due to the design of the small magnetic block on the single eccentric butterfly plate of the valve body, water hammer caused by rapid opening of the valve can be prevented;
7. and the upper part and the lower part of the valve are sealed by the filler, so that the sealing performance of the valve is enhanced.
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a sealing waterproof hammer double-shaft pin-free single eccentric butterfly valve;
FIG. 2 is a schematic diagram of a front cross-sectional structure of a sealing waterproof hammer double-shaft pin-free single-eccentric butterfly valve according to the invention;
FIG. 3 is a schematic diagram of a left-hand structure of a sealing waterproof hammer double-shaft pinless single-eccentric butterfly valve according to the invention;
FIG. 4 shows an exhaust hole of a sealed waterproof hammer double-shaft pin-free single eccentric butterfly valve;
FIG. 5 is a diagram showing the cooperation of a small magnetic block and a valve body of the sealing waterproof hammer double-shaft pin-free single-eccentric butterfly valve.
The reference numerals are explained as follows:
1. a valve body; 2. a valve stem; 3. a butterfly plate; 4. a sealing device; 5. a driving device;
11. an end cap; 12. a first hex head bolt hole; 13. a first hexagon socket cap screw hole; 14. a lower shaft sleeve; 15. an upper shaft sleeve; 16. a third hex head bolt hole; 17. a second hexagon socket cap screw hole; 18. a third hexagon socket cap screw hole; 110. a film; 111. swing rod; 112. a float; 113. a hexagon socket head end set screw; 114. the inner hexagonal flat end is provided with a screw hole; 115. a second hex head bolt hole; 116. a second hex head bolt; 117. a fifth hex head bolt; 118. a fifth hex head bolt hole;
21. a lower valve rod; 22. an upper valve rod;
31. a single eccentric butterfly plate; 32. a positioning block; 33. a small magnetic block;
41. an O-ring; 42. a spacer ring; 43. a packing support ring; 44. a rubber seal ring; 45. a first packing platen; 46. a second packing platen;
51. a valve cover; 52. a handle.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and to distinguish between similar objects, and there is no order of preference between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Examples: referring to fig. 1-5, a double-shaft pinless single-eccentric butterfly valve for sealing a water hammer is disclosed in the embodiment, and comprises a valve body 1, an end cover 11, a valve rod 2, a butterfly plate 3, a driving device 5 and a sealing device 4. The valve body 1 comprises a first hexagonal bolt hole 12, a second hexagonal bolt hole 115, a third hexagonal bolt hole 16, a first inner hexagonal cylindrical head screw hole 13, a second inner hexagonal cylindrical head screw hole 17, a third inner hexagonal cylindrical head screw hole 18, a lower shaft sleeve 14, an upper shaft sleeve 15, a film 110, a swing rod 111, a float 112, a fifth hexagonal bolt hole 118 and an inner hexagonal flat end set screw hole 114. The inside cavity that has of valve body 1, butterfly plate 3 locates in the cavity. The bottom of the valve body 1 is provided with a first hexagon bolt hole 12 and a second hexagon bolt hole 115, and the first hexagon bolt hole 12 and the second hexagon bolt hole 115 are respectively provided with a hexagon bolt and a second hexagon bolt 116, which are used for being connected with the end cover 11 and playing a role of fixing the end cover 11. The top of the valve body 1 is provided with the third hexagon bolt hole 16, and the third hexagon bolt hole 16 is provided with a hexagon bolt for positioning the valve cover 51, so that the valve cover 51 is prevented from colliding with the valve body 1. The middle lower part of the valve body 1 is provided with a first inner hexagonal cylindrical head screw hole 13, and the first inner hexagonal cylindrical head screw hole 13 is provided with an inner hexagonal cylindrical head screw for integrally fixing the valve body 1. The top of the valve body 1 is provided with a second inner hexagonal cylindrical head screw hole 17 and a third inner hexagonal cylindrical head screw hole 18, and the second inner hexagonal cylindrical head screw hole 17 and the third inner hexagonal cylindrical head screw hole 18 are respectively provided with an inner hexagonal cylindrical head screw for fixing a first packing pressing plate 45, and the arrangement directly determines the sealing effect. The upper shaft sleeve 15 is arranged in the middle of the valve body 1, the lower shaft sleeve 14 is arranged in the middle of the valve body 1, the upper shaft sleeve 15 and the lower shaft sleeve 14 are used for fixing the position of the valve rod 2, so that the valve rod 2 is prevented from shifting, and in addition, friction and surface abrasion can be reduced. The top of the side edge of the valve body 1 is provided with the inner hexagonal flat end set screw hole 114, and is provided with an inner hexagonal flat end set screw 113 for integrally fixing the valve 1.
The end cover 11 is detachably connected with the valve body 1, the end cover 11 is provided with threaded holes concentric with the first hexagonal bolt hole 12 and the second hexagonal bolt hole 115, and the first hexagonal bolt hole 12 and the second hexagonal bolt hole 115 are penetrated by a hexagonal bolt and a second hexagonal bolt 116 which are respectively installed. The left side of the valve body is provided with an exhaust hole, and the exhaust hole is provided with a film 110, a swing rod 111 and a float 112 in sequence from top to bottom for exhausting gas in the fluid.
The butterfly plate 3 comprises a single eccentric butterfly plate 31, a positioning block 32 and a small magnetic block 33, wherein the single eccentric butterfly plate 31 is a key for determining the opening and closing of the valve, and the positioning block 32 is used for positioning the valve rod 2. The upper and lower ends of the single eccentric butterfly plate 31 are respectively matched with the upper valve rod 22 and the lower valve rod 21, the positioning block 32 is positioned at the upper end of the single eccentric butterfly plate 31 and matched with the upper valve rod 22, and the small magnetic block 33 is matched with two openings on the valve 1 for preventing the valve from being opened rapidly.
The valve rod 2 comprises an upper valve rod 22 and a lower valve rod 21, and is used for driving the single eccentric butterfly plate 31 to rotate. The upper valve rod 22 is matched with the upper shaft sleeve 15, and the lower valve rod 21 is matched with the lower shaft sleeve 14.
The driving device 5 comprises a valve cover 51 and a handle 52. The valve cover 51 is located above the valve body 1 and connected to the upper stem 22 for transmitting rotational movement to the upper stem 22. The handle 52 is welded to the valve cover 51 to drive the single eccentric butterfly plate 31 to rotate, and is a decisive component for the operation and stop of the whole valve.
The lower valve rod 21 deviates from one end of the butterfly plate 3 and is connected with the end cover 11, the end cover 11 is provided with a connecting hole matched with the first hexagonal bolt hole 12 and the second hexagonal bolt hole 115, and the connecting hole and the connecting holes of the first hexagonal bolt hole 12 and the second hexagonal bolt hole 115 are respectively penetrated by the hexagonal bolt so as to connect the lower valve rod 21 with the valve body 1.
The sealing device 4 comprises an O-ring 41, a spacer ring 42, a packing support ring 43, a rubber sealing ring 44, a first packing pressing plate 45 and a second packing pressing plate 46. The O-ring 41 is mounted on the side of the end cap 11 facing the valve body 1 for sealing the rectangular groove between the end cap 11 and the lower stem 21. The spacer ring 42 is positioned in the middle of the upper shaft sleeve 15 and clings to the valve body 1, so that uniform stress in the circumferential direction of the valve rod 2 is ensured, and the packing is ensured not to deform after being stressed so that the packing is pressed and overflows, thereby maintaining the sealing performance of the valve. The packing support ring 43 is located below the first packing pressing plate 45, and the packing support ring 43 is located inside the rubber sealing ring 44 and is used for bearing the weight of packing and moisture in the packing. Two ends of the first packing pressing plate 45 are provided with two screw holes concentric with the second inner hexagonal cylindrical head screw hole 17 and the third inner hexagonal cylindrical head screw hole 18, and the inner hexagonal cylindrical head screws installed by the second inner hexagonal cylindrical head screw hole 17 and the third inner hexagonal cylindrical head screw hole 18 penetrate through the two screw holes, and the first packing pressing plate 45 compresses packing by self gravity. The second packing pressing plate 46 is fixed by the fifth hexagon head bolt 117 and used for pressing the sealing packing between the lower valve rod 21 and the valve body 1.
The invention is realized by the following steps:
first, the valve body 1, the valve stem 2, the butterfly plate 3, the sealing device 4, the driving device 5 and the corresponding mating parts are assembled.
Closing the valve: rotating the handle 52 to drive the valve cover 51 to drive the upper valve rod 22 to rotate downwards, rotating the upper valve rod 22 to drive the single eccentric butterfly plate 31 to rotate, simultaneously rotating the single eccentric butterfly plate 31 around the lower valve rod 21, starting rotating the single eccentric butterfly plate 31 from a position which is 90 degrees with the central line of the valve until the single eccentric butterfly plate 31 is 0 degree with the central line of the valve, so that the valve 1 is closed and is not communicated any more, because of the eccentric design of the single eccentric butterfly plate 31, the axis of the valve rod 2 deviates from the center of the single eccentric butterfly plate 31, and when the valve is opened, the single eccentric butterfly plate 31 is separated from the lower valve rod 21, so that the upper end and the lower end of the single eccentric butterfly plate 31 are not rotating centers any more, and leakage caused by friction wear at the ends of the upper valve rod 21 and the lower valve rod 21 is eliminated, and because the valve rod 2 is in bolted connection, the valve 1 can be always in a closed state;
opening the valve, rotating the handle 52, driving the valve cover 51 and the upper valve rod 22 to rotate by the handle 52, driving the single eccentric butterfly plate 31 to start rotating by the upper valve rod 22, starting rotating by the single eccentric butterfly plate 31 from a position with an included angle of 0 degrees with the central line of the valve body 1, simultaneously preventing the valve from being opened by the suction force between the small magnetic block 33 on the butterfly plate 3 and the valve body 1, gradually opening the valve 1 by overcoming the magnetic force under the driving of external force, and completely opening the valve when the single eccentric butterfly plate 31 is changed from a central line clamping angle of 90 degrees with the valve body 1;
when the valve works, fluid enters the vent hole, the floater 112 is pushed upwards, the floater 112 props against the swing rod 111 to rotate upwards, the air is attached to the wall surface to realize the sealing of the vent hole when the swing rod 111 is horizontal, when the fluid contains gas, the air passes through the vent hole, the floater 112 descends, the swing rod 111 rotates downwards, the vent hole is opened, and the gas is discharged through the film 110.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.

Claims (9)

1. The double-shaft pin-free single-eccentric butterfly valve is characterized by comprising a valve body, a valve rod, a butterfly plate and a driving device;
the valve body is provided with a cavity, the butterfly plate is arranged in the cavity, and the top and the bottom of the valve body are respectively provided with a first through hole and a second through hole which are communicated with the cavity;
the valve rod comprises an upper valve rod and a lower valve rod, the upper valve rod penetrates through the first through hole and is connected with the butterfly plate, the lower valve rod penetrates through the second through hole and is rotatably connected with the butterfly plate, the butterfly plate can move relative to the lower valve rod along the axial direction of the lower valve rod, and the lower valve rod and the upper valve rod are coaxially arranged;
the upper valve rod and the first through hole are internally provided with matched threads, and when the upper valve rod rotates in the first through hole, the butterfly plate is driven to rotate and is driven to move along the axial direction of the lower valve rod;
one end of the lower valve rod, which is away from the butterfly plate, is connected with an end cover, and the end cover is connected with the valve body;
the driving device is connected with the upper valve rod, and drives the upper valve rod to rotate through the driving device, so that the butterfly plate is driven to rotate relative to the lower valve rod, and the opening and closing functions of the valve are realized.
2. The sealed water hammer resistant double shaft pinless single eccentric butterfly valve of claim 1, wherein the butterfly plate comprises a single eccentric butterfly plate, the axes of the upper and lower valve stems being offset from the center line of the single eccentric butterfly plate;
a positioning block is arranged at the joint of the single eccentric butterfly plate and the upper valve rod; the upper valve rod is provided with a positioning groove matched with the positioning block, and the positioning block is inserted into the positioning groove to relatively fix the single eccentric butterfly plate and the upper valve rod;
two small protruding magnetic blocks are arranged on two opposite sides of the single eccentric butterfly plate, grooves matched with the small magnetic blocks are formed in the valve body, and when the valve is closed, the small magnetic blocks are embedded into the grooves and are adsorbed.
3. The sealed, water hammer resistant, double-shaft, pinless, single-eccentric butterfly valve of claim 1, wherein the drive means comprises a valve cap and a handle, the valve cap and the upper valve stem are connected, and the handle is vertically connected to a side of the valve cap.
4. The sealing waterproof hammer double-shaft pinless single-eccentric butterfly valve according to claim 1, wherein the second through hole is symmetrically provided with a first hexagonal bolt hole and a second hexagonal bolt hole on both sides, the end cover is provided with a connecting hole matched with the first hexagonal bolt hole and the second hexagonal bolt hole, and the connecting hole of the first hexagonal bolt hole and the connecting hole of the second hexagonal bolt hole are respectively penetrated by the hexagonal bolt so as to connect the end cover and the valve body;
a packing is filled between the lower valve rod and the valve body, a second packing pressing plate is sleeved on the lower valve rod, and the packing is pressed by the second packing pressing plate to form packing seal;
a third hexagon bolt hole is formed in the top end of the valve body, and a hexagon bolt facing the valve cover is arranged in the third hexagon bolt hole; and a spring washer is arranged between the third hexagon head bolt hole and the valve body.
5. The sealed water hammer preventing double-shaft pin-free single-eccentric butterfly valve according to claim 1, wherein the side wall forming the first through hole comprises a first side wall close to the butterfly plate and a second side wall far away from the butterfly plate, threads matched with the upper valve rod are arranged on the first side wall, and the diameter of the through hole surrounded by the second side wall increases from one side close to the butterfly plate to one side far away from the butterfly plate;
the packing is filled between the upper valve rod and the valve body, a first packing pressing plate is sleeved on the upper valve rod, and the packing is pressed by the first packing pressing plate to form packing seal.
6. The sealed waterproof hammer biaxial pinless single eccentric butterfly valve of claim 5, wherein a second hexagonal socket head screw hole and a third hexagonal socket head screw hole are symmetrically arranged on the first packing pressing plate, two screw holes matched with the second hexagonal socket head screw hole and the third hexagonal socket head screw hole are arranged on the second side wall, and the first packing pressing plate and the valve body are connected by inserting and tightening the second hexagonal socket head screw hole, the third hexagonal socket head screw hole and the corresponding screw holes through the two hexagonal socket head screws respectively.
7. The sealed water hammer resistant double-shaft pinless single eccentric butterfly valve of claim 5, wherein an O-ring is padded on a side of the end cover facing the valve body;
and a packing support ring is arranged below the first packing pressing plate, and a rubber sealing ring is sleeved outside the packing support ring.
8. The sealed waterproof hammer double-shaft pinless single-eccentric butterfly valve of claim 1, wherein a lower shaft sleeve is arranged between the valve body and the lower valve rod, and an upper shaft sleeve is arranged between the valve body and the upper valve rod;
the middle part of the upper shaft sleeve is provided with a spacing ring, and the spacing ring is clung to the valve body.
9. The sealed waterproof hammer double-shaft pinless single-eccentric butterfly valve according to claim 1, wherein the valve body is provided with an exhaust hole, a film, a swing rod and a floater are arranged in the exhaust hole, the floater can float up and down in the exhaust hole, the film is at the uppermost end of the exhaust hole, the swing rod is hinged on a wall surface and is connected with the floater, and when the floater floats to the uppermost end, the swing rod horizontally and just blocks the exhaust hole.
CN202310912770.2A 2023-07-25 2023-07-25 Sealed waterproof hammer biax does not have single eccentric butterfly valve of round pin Pending CN117090946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310912770.2A CN117090946A (en) 2023-07-25 2023-07-25 Sealed waterproof hammer biax does not have single eccentric butterfly valve of round pin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310912770.2A CN117090946A (en) 2023-07-25 2023-07-25 Sealed waterproof hammer biax does not have single eccentric butterfly valve of round pin

Publications (1)

Publication Number Publication Date
CN117090946A true CN117090946A (en) 2023-11-21

Family

ID=88777826

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310912770.2A Pending CN117090946A (en) 2023-07-25 2023-07-25 Sealed waterproof hammer biax does not have single eccentric butterfly valve of round pin

Country Status (1)

Country Link
CN (1) CN117090946A (en)

Similar Documents

Publication Publication Date Title
CN117090946A (en) Sealed waterproof hammer biax does not have single eccentric butterfly valve of round pin
CN116517504B (en) Large-caliber gas injection and production wellhead device
CN215568007U (en) Double-valve-plate high-sealing butterfly valve
CN212251196U (en) Bidirectional hydraulic butterfly valve dynamic composite sealing device
CN211715798U (en) High-performance low-torque eccentric butterfly valve
CN211175422U (en) Bidirectional sealing rotary ball valve
CN219639499U (en) Power station hydrophobic ball valve convenient to assembly
CN203363218U (en) Worm gear transmission stop valve
CN2929377Y (en) Vacuum butterfly valve
CN219888741U (en) Flange type electric butterfly valve
CN111852338B (en) Sliding sleeve type horizontal well floating device
CN217328618U (en) Pipeline check valve disassembly-free emptying system
CN219176960U (en) Butterfly valve convenient to lock
CN218670680U (en) Three-eccentric sealing butterfly valve
CN219139849U (en) Butterfly valve with good sealing effect
CN220910532U (en) Sealing structure of buried valve of gas pipeline
CN201166187Y (en) Full seal valve drive device
CN211693609U (en) Pneumatic valve
CN220168604U (en) Soft sealing device of ventilation butterfly valve
CN212055881U (en) Butterfly valve with automatic sealing function
CN216844104U (en) Trap without floating ball control
CN218152401U (en) High-performance double-eccentric ceramic valve seat
CN219176962U (en) Assembled manual butterfly valve
CN218063438U (en) Butterfly valve structure of double cassette
CN2409389Y (en) Three-position two-way piston valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20240117

Address after: 315000 No. 189, Shengyuan Road, Fenghua Economic Development Zone, Ningbo City, Zhejiang Province (self declaration)

Applicant after: NINGBO VALVE MANUFACTURING Co.,Ltd.

Address before: 317525 floor 5-7, pump innovation service complex, Jinli Road, Daxi Town, Wenling City, Taizhou City, Zhejiang Province

Applicant before: Wenling Institute of fluid machinery, Jiangsu University

TA01 Transfer of patent application right