CN117803715A - Transmission device for valve actuator - Google Patents

Transmission device for valve actuator Download PDF

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Publication number
CN117803715A
CN117803715A CN202410002982.1A CN202410002982A CN117803715A CN 117803715 A CN117803715 A CN 117803715A CN 202410002982 A CN202410002982 A CN 202410002982A CN 117803715 A CN117803715 A CN 117803715A
Authority
CN
China
Prior art keywords
valve
fixedly connected
rod
fluid
actuator
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
CN202410002982.1A
Other languages
Chinese (zh)
Inventor
隋昊庭
刘德龙
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.)
Dandong Jiate Chemical Equipment Co ltd
Original Assignee
Dandong Jiate Chemical Equipment Co ltd
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 Dandong Jiate Chemical Equipment Co ltd filed Critical Dandong Jiate Chemical Equipment Co ltd
Priority to CN202410002982.1A priority Critical patent/CN117803715A/en
Publication of CN117803715A publication Critical patent/CN117803715A/en
Pending legal-status Critical Current

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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
    • F16K1/226—Shaping or arrangements of the sealing
    • 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
    • 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
    • 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
    • F16K1/46—Attachment of sealing rings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

The invention discloses a transmission device for a valve driver, which relates to the technical field of valves and comprises a valve body, wherein the surface of the valve body is fixedly connected with a valve seat, the outer surface of the valve seat is in threaded connection with a valve cover, the middle part of the outer surface of the valve cover is fixedly connected with an upper sealing seat, the surface of the upper sealing seat is fixedly connected with a hand wheel bracket, the surface of the hand wheel bracket is fixedly connected with a bearing, and the surface of the bearing is rotationally connected with a handle through a threaded rod. This transmission for valve actuator is fixed on the valve rod surface through the holder, and when the valve rod rotated, rivers impacted slider and water conservancy diversion bolster for the slider slides on the slide bar surface, when sliding to the stopper surface, because water conservancy diversion bolster is relative setting, and the curved guide piece that the fixed plate both sides set up along fluid impact direction receives the slider extrusion, makes curved guide piece receive the slider to push to both sides extension, thereby reduces the impact force that the fluid caused the valve plate.

Description

Transmission device for valve actuator
Technical Field
The invention relates to the technical field of valves, in particular to a transmission device for a valve driver.
Background
The valve is a control component in the fluid conveying system and has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, diverting or overflow pressure relief and the like. Valves for fluid control systems range from the simplest shut-off valves to the various valves used in extremely complex automatic control systems, which are quite diverse in variety and specification.
The butterfly valve is also called as a flap valve, is a regulating valve with a simple structure, and can be used for the on-off control of low-pressure pipeline media, wherein the butterfly valve is a valve with a disc or square disc as a closing member and rotates around a valve shaft to realize opening and closing; the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like; the pipe is mainly used for cutting and throttling; the butterfly valve opening and closing member is a disc-shaped butterfly plate which rotates around the axis of the butterfly valve body in the valve body, thereby achieving the purpose of opening and closing or adjusting,
at present, when the butterfly valve is used in a high-pressure high-flow-rate pipeline, the butterfly valve is large in impact when opened and closed, and because of the water hammer effect of water flow, the butterfly valve generates impact, so that equipment is large in impact, high in failure rate and short in service life.
Disclosure of Invention
In order to achieve the above purpose, the invention is realized by the following technical scheme: the transmission device for the valve driver comprises a valve body, wherein the surface of the valve body is fixedly connected with a valve seat, the outer surface of the valve seat is in threaded connection with a valve cover, an upper sealing seat is fixedly connected in the middle of the outer surface of the valve cover, the surface of the upper sealing seat is fixedly connected with a hand wheel bracket, the surface of the hand wheel bracket is fixedly connected with a bearing, and the surface of the bearing is rotationally connected with a handle through a threaded rod;
the transmission device for the valve actuator further comprises:
the transmission assembly is fixedly connected to the inner surface of the upper sealing seat and comprises a sealing ring, the inner surface of the sealing ring is rotationally connected with a valve rod, the lower surface of the valve rod is fixedly connected with a sealing plug, the outer surface of the valve rod is fixedly connected with a valve plate, the outer surface of the valve rod is fixedly connected with a drag reduction assembly, the drag reduction assembly is provided with four groups, and the four groups of drag reduction assemblies are symmetrical by taking the valve plate as a center. When the valve rod rotates to drive the valve plate to rotate, the drag reduction assembly arranged on the surface of the valve rod rotates along with the valve plate, and because the drag reduction assembly and the valve plate are arranged in a staggered mode, fluid impacts the drag reduction assembly when the valve plate rotates and opens in the sealing ring, and the drag reduction assembly deforms.
Preferably, the outer surface fixedly connected with top flange of sealing ring, the surface fixedly connected with extension rod of top flange, the upper surface fixedly connected with support of extension rod, support fixed connection is at the lower surface of hand wheel support. The sealing ring is arranged inside the valve body, the extension rod is sleeved on the outer surface of the threaded rod, the valve rod is connected with the handle through the extension rod, the threaded rod arranged on the surface of the handle is rotated to drive the valve rod to rotate, the valve rod drives the valve plate on the outer side to rotate in the sealing ring, and accordingly the opening and closing size of the valve plate is adjusted, and the fluid conveying speed is controlled.
Preferably, the drag reduction assembly comprises a clamping seat, the surface fixedly connected with fixed plate of clamping seat, the surface fixedly connected with water conservancy diversion bolster of fixed plate, water conservancy diversion bolster is provided with two sets ofly, two sets of water conservancy diversion bolster uses the fixed plate as central symmetry, the surface fixedly connected with slide bar of fixed plate, the surface fixedly connected with stopper of slide bar, the surface sliding connection of slide bar has the slider. The holder is fixed on the surface of the valve rod, when the valve rod rotates, water flow impacts the sliding block and the flow guide buffer piece, so that the sliding block slides on the surface of the sliding rod, and when the sliding block slides to the surface of the limiting block, the flow guide buffer piece is oppositely arranged, and the bent guide pieces arranged on two sides of the fixing plate along the impact direction of fluid are extruded by the sliding block, so that the bent guide pieces are pushed by the sliding block to extend towards two sides, and the impact force of the fluid on the valve plate is reduced.
Preferably, the flow guiding buffer piece comprises a connecting block, the connecting block is fixedly connected to the outer surface of the fixing plate, the outer surface of the connecting block is fixedly connected with bent guide pieces, two bent guide pieces are arranged, and the two bent guide pieces are symmetrical with the connecting block as a center. The sliding block is impacted by fluid to slide on the surface of the sliding rod to push the bent guide plates, the bent guide plates on two sides of the connecting block are extruded to slide on two sides of the connecting block and extend outwards, so that the contact area between the bent guide plates and the fluid is increased, the fluid close to the valve rod is divided, the impact on the joint of the valve plate and the valve rod is reduced, and the service life of the valve is prolonged;
because the curved guide piece is provided with the multiunit, and multiunit curved guide piece distributes in the week side of valve rod, and crisscross setting between valve plate, be provided with the interval between the valve plate, along with the valve rod drives the valve plate and carries out different angle rotations, curved guide piece and the area of contact between the fluid are different, when the valve plate rotates the angle of opening and shutting to the biggest, the rotatory range of water conservancy diversion bolster also becomes big thereupon, the contact surface between curved guide piece and the fluid is the biggest this moment, tend to the state perpendicular with the fluid flow direction, when fluid impact force is the biggest, to the fluid that is close to valve rod department shunts, reduce the wearing and tearing that fluid impact caused the valve rod.
Preferably, the surface of the connecting block, which is close to one side of the bent guide piece, is fixedly connected with a hack lever, the surface of the hack lever is fixedly connected with a shunt pipe, and the outer surface of the shunt pipe is provided with a shunt hole. When the valve plate rotates to open and close the angle is smaller, part of fluid can impact the shunt tube and pass through the shunt hole, as the sizes of openings at two ends of the shunt tube are different, the opening close to one side of the fluid is larger, so that the fluid can enter from the shunt hole, the opening at the outlet end is smaller, when the fluid flows out of the shunt tube after entering, the fluid is extruded by the inner wall of the shunt tube and the outlet end, the fluid flow rate is improved, and the speed of the fluid when passing through the angle of opening and closing the valve plate is adjusted.
Preferably, the surface of the connecting block far away from one side of the bent guide sheet is fixedly connected with a guide bent block, the outer surface of the guide bent block is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the surface of the shunt tube. The flow guiding bending block is of a curved arc elastic structure, the end part of the flow guiding bending block is of a triangular conical structure, and when fluid flows through the valve plate, the flow guiding bending block flows along the structural shape of the flow guiding bending block, so that the flow guiding effect is achieved, and the fluid is prevented from being gathered in the valve body to cause blockage.
The invention provides a transmission device for a valve actuator. The beneficial effects are as follows:
1. this transmission for valve actuator is fixed on the valve rod surface through the holder, and when the valve rod rotated, rivers impacted slider and water conservancy diversion bolster for the slider slides on the slide bar surface, when sliding to the stopper surface, because water conservancy diversion bolster is relative setting, and the curved guide piece that the fixed plate both sides set up along fluid impact direction receives the slider extrusion, makes curved guide piece receive the slider to push to both sides extension, thereby reduces the impact force that the fluid caused the valve plate.
2. The transmission device for the valve driver is characterized in that the bent guide plates are pushed by sliding on the surface of the sliding rod through the sliding block when the sliding block is impacted by fluid, the bent guide plates on two sides of the connecting block are extruded to slide on two sides of the connecting block, the contact area between the bent guide plates and the fluid is increased, the fluid close to the valve rod is divided, the impact on the joint of the valve plate and the valve rod is reduced, and the service life of the valve is prolonged.
3. The transmission device for the valve driver is provided with a plurality of groups of bent guide pieces, the bent guide pieces are distributed on the periphery of the valve rod and are staggered with the valve plate, a distance is arranged between the bent guide pieces and the valve plate, the valve plate is driven by the valve rod to rotate at different angles, the contact area between the bent guide pieces and fluid is different, when the valve plate rotates to the maximum opening and closing angle, the rotation amplitude of the flow guiding buffer piece is also increased, at the moment, the contact area between the bent guide pieces and the fluid is maximum, the state of the contact area tends to be perpendicular to the fluid flowing direction, when the fluid impact force is maximum, the fluid close to the valve rod is split, and the abrasion of the fluid impact to the valve rod is reduced.
4. This transmission for valve actuator, it is less through the valve plate rotation angle of opening and shutting, partial fluid can strike the shunt tubes to pass from the branch discharge orifice, because shunt tubes both ends trompil size difference, the trompil that is close to fluid one side is great, is convenient for the fluid to get into from the branch discharge orifice, and the exit end trompil is less, when fluid flows in from the shunt tubes after getting into, receives shunt tubes inner wall and exit end extrusion, improves fluid flow rate, thereby the speed when adjustment fluid passes through valve plate opening and shutting size angle.
5. The transmission device for the valve driver has the advantages that the bent guide block is of an arc-shaped elastic structure, the end part of the bent guide block is of a triangular conical structure, and when fluid flows through the valve plate, the valve plate flows along the structural shape of the bent guide block to play a role in guiding, so that the fluid is prevented from being gathered in the valve body to cause blockage.
Drawings
FIG. 1 is a schematic view of the external structure of a transmission device for a valve actuator of the present invention;
FIG. 2 is a schematic diagram of a cross-sectional structure of a valve body according to the present invention;
FIG. 3 is a schematic view of a transmission assembly according to the present invention;
FIG. 4 is an enlarged schematic view of the drag reducing assembly of the present invention;
FIG. 5 is a schematic diagram of the drag reducing assembly of the present invention;
FIG. 6 is a schematic view of the structure of the diversion buffer of the present invention.
In the figure: 1. a handle; 2. a bearing; 3. a hand wheel bracket; 4. an upper seal seat; 5. a valve cover; 6. a valve body; 7. a valve seat; 8. a transmission assembly; 81. a support; 82. an extension rod; 83. a top flange; 84. a seal ring; 85. a drag reducing assembly; 851. a clamping seat; 852. a fixing plate; 853. a diversion buffer; 8531. a flow guiding bending block; 8532. a joint block; 8533. a hack lever; 8534. bending guide pieces; 8535. a shunt; 8536. a diversion aperture; 8537. a connecting rod; 854. a slide bar; 855. a limiting block; 856. a slide block; 86. a valve plate; 87. a valve stem; 88. and (5) sealing plugs.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
In a first embodiment, as shown in fig. 1 to 3, the present invention provides a technical solution: the transmission device for the valve driver comprises a valve body 6, wherein the surface of the valve body 6 is fixedly connected with a valve seat 7, the outer surface of the valve seat 7 is in threaded connection with a valve cover 5, an upper sealing seat 4 is fixedly connected to the middle of the outer surface of the valve cover 5, a hand wheel bracket 3 is fixedly connected to the surface of the upper sealing seat 4, a bearing 2 is fixedly connected to the surface of the hand wheel bracket 3, and a handle 1 is rotatably connected to the surface of the bearing 2 through a threaded rod;
the transmission assembly 8, transmission assembly 8 fixed connection is at the internal surface of last seal seat 4, transmission assembly 8 includes sealing ring 84, the internal surface rotation of sealing ring 84 is connected with valve rod 87, the lower surface fixedly connected with sealing plug 88 of valve rod 87, the surface fixedly connected with valve plate 86 of valve rod 87, the surface fixedly connected with drag reduction subassembly 85 of valve rod 87, drag reduction subassembly 85 is provided with four groups, four groups drag reduction subassembly 85 uses valve plate 86 as central symmetry. As the valve rod 87 rotates to drive the valve plate 86 to rotate, the drag reducing component 85 arranged on the surface of the valve rod 87 rotates along with the valve rod, and as the drag reducing component 85 and the valve plate 86 are arranged in a staggered manner, fluid impacts the drag reducing component 85 when the valve plate 86 rotates and opens in the sealing ring 84, so that the drag reducing component 85 deforms.
The outer surface fixedly connected with top flange 83 of sealing ring 84, the surface fixedly connected with extension rod 82 of top flange 83, the upper surface fixedly connected with support 81 of extension rod 82, support 81 fixed connection is at the lower surface of hand wheel support 3. The sealing ring 84 is arranged inside the valve body 6, the extension rod 82 is sleeved on the outer surface of the threaded rod, the valve rod 87 is connected with the handle 1 through the extension rod 82, the threaded rod arranged on the surface of the handle 1 is rotated to drive the valve rod 87 to rotate by rotating the handle 1, and the valve rod 87 drives the valve plate 86 on the outer side to rotate in the sealing ring 84, so that the opening and closing size of the valve plate 86 is adjusted, and the fluid conveying rate is controlled.
The drag reduction assembly 85 comprises a clamping seat 851, a fixing plate 852 is fixedly connected to the outer surface of the clamping seat 851, a diversion buffering piece 853 is fixedly connected to the outer surface of the fixing plate 852, two groups of diversion buffering pieces 853 are arranged, the diversion buffering pieces 853 are symmetrical with the fixing plate 852 as a center, a sliding rod 854 is fixedly connected to the outer surface of the fixing plate 852, a limiting block 855 is fixedly connected to the surface of the sliding rod 854, and a sliding block 856 is slidably connected to the surface of the sliding rod 854. The clamping seat 851 is fixed on the surface of the valve rod 87, when the valve rod 87 rotates, water flow impacts the sliding block 856 and the diversion buffer 853, so that the sliding block 856 slides on the surface of the sliding rod 854, and when the sliding block 855 slides, as the diversion buffer 853 is oppositely arranged, the bent guide pieces 8534 arranged on two sides of the fixing plate 852 along the fluid impact direction are extruded by the sliding block 856, so that the bent guide pieces 8534 are pushed by the sliding block 856 to extend towards two sides, and the impact force of fluid on the valve plate 86 is reduced.
In a second embodiment, as shown in fig. 4-6, the guiding buffering member 853 includes a connecting block 8532, the connecting block 8532 is fixedly connected to the outer surface of the fixing plate 852, the outer surface of the connecting block 8532 is fixedly connected with two curved guiding pieces 8534, and the two curved guiding pieces 8534 are symmetrical with the connecting block 8532 as a center. The slide blocks 856 are impacted by fluid to slide on the surface of the slide rod 854 to push the bent guide pieces 8534, the bent guide pieces 8534 on two sides of the connecting block 8532 are extruded to slide on two sides of the connecting block 8532 to extend outwards, the contact area between the bent guide pieces and the fluid is increased, the fluid close to the valve rod 87 is divided, the impact on the joint of the valve plate 86 and the valve rod 87 is relieved, and the service life of the valve is prolonged;
because the curved guide pieces 8534 are provided with a plurality of groups, and the curved guide pieces 8534 are distributed on the periphery of the valve rod 87 and are staggered with the valve plate 86, a distance is provided between the curved guide pieces 8534 and the valve plate 86, and the valve plate 86 is driven by the valve rod 87 to rotate at different angles, the contact area between the curved guide pieces 8534 and fluid is different, when the valve plate 86 rotates to the maximum opening and closing angle, the rotation amplitude of the flow guiding buffer piece 853 is also increased, at the moment, the contact area between the curved guide pieces 8534 and fluid is the maximum, and the state of being perpendicular to the fluid flowing direction tends to be achieved, when the fluid impact force is the maximum, the fluid close to the valve rod 87 is split, and the abrasion of the valve rod 87 caused by the fluid impact is reduced.
The surface of the connecting block 8532, which is close to one side of the bent guide piece 8534, is fixedly connected with a hack lever 8533, the surface of the hack lever 8533 is fixedly connected with a shunt pipe 8535, and the outer surface of the shunt pipe 8535 is provided with a shunt hole 8536. When the valve plate 86 rotates to open and close at a smaller angle, part of fluid can impact the shunt tube 8535 and pass through the shunt hole 8536, as the openings at two ends of the shunt tube 8535 are different in size, the opening close to one side of the fluid is larger, so that the fluid can enter from the shunt hole 8536, the opening at the outlet end is smaller, and when the fluid flows out of the shunt tube 8535 after entering, the fluid is extruded by the inner wall of the shunt tube 8535 and the outlet end, so that the fluid flow rate is improved, and the speed of the fluid when passing through the opening and closing angle of the valve plate 86 is adjusted.
The surface of the connecting block 8532 far away from one side of the bent guide piece 8534 is fixedly connected with a guide bent block 8531, the outer surface of the guide bent block 8531 is fixedly connected with a connecting rod 8537, and the connecting rod 8537 is fixedly connected with the surface of the shunt tube 8535. The flow guiding bending block 8531 is of a curved arc elastic structure, the end part of the flow guiding bending block is of a triangular cone structure, and when fluid flows through the valve plate 86, the flow guiding bending block flows along the structural shape of the flow guiding bending block 8531, so that the flow guiding effect is achieved, and the fluid is prevented from being gathered in the valve body 6 to cause blockage.
When the anti-drag assembly is used, the anti-drag assembly 85 arranged on the surface of the valve rod 87 rotates along with the rotation of the valve rod 87 while the valve plate 86 is driven to rotate, and because the anti-drag assembly 85 and the valve plate 86 are arranged in a staggered manner, fluid impacts the anti-drag assembly 85 when the valve plate 86 rotates and opens in the sealing ring 84, so that the anti-drag assembly 85 deforms.
The sealing ring 84 is arranged inside the valve body 6, the extension rod 82 is sleeved on the outer surface of the threaded rod, the valve rod 87 is connected with the handle 1 through the extension rod 82, the threaded rod arranged on the surface of the handle 1 is rotated to drive the valve rod 87 to rotate by rotating the handle 1, and the valve rod 87 drives the valve plate 86 on the outer side to rotate in the sealing ring 84, so that the opening and closing size of the valve plate 86 is adjusted, and the fluid conveying rate is controlled.
The clamping seat 851 is fixed on the surface of the valve rod 87, when the valve rod 87 rotates, water flow impacts the sliding block 856 and the diversion buffer 853, so that the sliding block 856 slides on the surface of the sliding rod 854, and when the sliding block 855 slides, as the diversion buffer 853 is oppositely arranged, the bent guide pieces 8534 arranged on two sides of the fixing plate 852 along the fluid impact direction are extruded by the sliding block 856, so that the bent guide pieces 8534 are pushed by the sliding block 856 to extend towards two sides, and the impact force of fluid on the valve plate 86 is reduced.
The slide blocks 856 are impacted by fluid to slide on the surface of the slide rod 854 to push the bent guide pieces 8534, the bent guide pieces 8534 on two sides of the connecting block 8532 are extruded to slide on two sides of the connecting block 8532 to extend outwards, the contact area between the bent guide pieces and the fluid is increased, the fluid close to the valve rod 87 is divided, the impact on the joint of the valve plate 86 and the valve rod 87 is relieved, and the service life of the valve is prolonged;
because the curved guide pieces 8534 are provided with a plurality of groups, and the curved guide pieces 8534 are distributed on the periphery of the valve rod 87 and are staggered with the valve plate 86, a distance is provided between the curved guide pieces 8534 and the valve plate 86, and the valve plate 86 is driven by the valve rod 87 to rotate at different angles, the contact area between the curved guide pieces 8534 and fluid is different, when the valve plate 86 rotates to the maximum opening and closing angle, the rotation amplitude of the flow guiding buffer piece 853 is also increased, at the moment, the contact area between the curved guide pieces 8534 and fluid is the maximum, and the state of being perpendicular to the fluid flowing direction tends to be achieved, when the fluid impact force is the maximum, the fluid close to the valve rod 87 is split, and the abrasion of the valve rod 87 caused by the fluid impact is reduced. When the valve plate 86 rotates to open and close at a smaller angle, part of fluid can impact the shunt tube 8535 and pass through the shunt hole 8536, as the openings at two ends of the shunt tube 8535 are different in size, the opening close to one side of the fluid is larger, so that the fluid can enter from the shunt hole 8536, the opening at the outlet end is smaller, and when the fluid flows out of the shunt tube 8535 after entering, the fluid is extruded by the inner wall of the shunt tube 8535 and the outlet end, so that the fluid flow rate is improved, and the speed of the fluid when passing through the opening and closing angle of the valve plate 86 is adjusted.
The flow guiding bending block 8531 is of a curved arc elastic structure, the end part of the flow guiding bending block is of a triangular cone structure, and when fluid flows through the valve plate 86, the flow guiding bending block flows along the structural shape of the flow guiding bending block 8531, so that the flow guiding effect is achieved, and the fluid is prevented from being gathered in the valve body 6 to cause blockage.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims (6)

1. The transmission device for the valve driver comprises a valve body (6), wherein a valve seat (7) is fixedly connected with the surface of the valve body (6), and a valve cover (5) is connected with the outer surface of the valve seat (7) in a threaded manner, and the transmission device is characterized in that: an upper sealing seat (4) is fixedly connected to the middle of the outer surface of the valve cover (5), a hand wheel bracket (3) is fixedly connected to the surface of the upper sealing seat (4), a bearing (2) is fixedly connected to the surface of the hand wheel bracket (3), and a handle (1) is rotatably connected to the surface of the bearing (2) through a threaded rod;
the transmission device for the valve actuator further comprises:
the transmission assembly (8), transmission assembly (8) fixed connection is at the internal surface of last seal seat (4), transmission assembly (8) include sealing ring (84), the internal surface of sealing ring (84) rotates and is connected with valve rod (87), the lower fixed surface of valve rod (87) is connected with sealing plug (88), the surface fixedly connected with valve plate (86) of valve rod (87), the surface fixedly connected with drag reduction subassembly (85) of valve rod (87), drag reduction subassembly (85) are provided with four groups, four groups drag reduction subassembly (85) use valve plate (86) as central symmetry.
2. The actuator for a valve actuator of claim 1, wherein: the outer surface fixedly connected with top flange (83) of sealing ring (84), the outer surface fixedly connected with extension rod (82) of top flange (83), the upper surface fixedly connected with support (81) of extension rod (82), support (81) fixed connection is at the lower surface of hand wheel support (3).
3. The actuator for a valve actuator of claim 2, wherein: the drag reduction assembly (85) comprises a clamping seat (851), the outer surface fixedly connected with fixed plate (852) of clamping seat (851), the outer surface fixedly connected with water conservancy diversion cushioning piece (853) of fixed plate (852), water conservancy diversion cushioning piece (853) are provided with two sets of, two sets of water conservancy diversion cushioning piece (853) use fixed plate (852) as central symmetry, the outer surface fixedly connected with slide bar (854) of fixed plate (852), the surface fixedly connected with stopper (855) of slide bar (854), the surface sliding connection of slide bar (854) has slider (856).
4. A valve actuator assembly according to claim 3, wherein: the guide buffering piece (853) comprises a connecting block (8532), the connecting block (8532) is fixedly connected to the outer surface of the fixing plate (852), bent guide pieces (8534) are fixedly connected to the outer surface of the connecting block (8532), two bent guide pieces (8534) are arranged, and the two bent guide pieces (8534) are symmetrical with the connecting block (8532) as a center.
5. The actuator for a valve actuator of claim 4, wherein: the surface of linking block (8532) near curved guide piece (8534) one side is fixedly connected with hack lever (8533), the surface of hack lever (8533) is fixedly connected with shunt tubes (8535), shunt holes (8536) have been seted up to shunt tubes (8535) surface.
6. The actuator for a valve actuator of claim 5, wherein: the connecting block (8532) is fixedly connected with a diversion bending block (8531) on the surface of one side far away from the bending guide piece (8534), a connecting rod (8537) is fixedly connected with the outer surface of the diversion bending block (8531), and the connecting rod (8537) is fixedly connected with the surface of the shunt tube (8535).
CN202410002982.1A 2024-01-02 2024-01-02 Transmission device for valve actuator Pending CN117803715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410002982.1A CN117803715A (en) 2024-01-02 2024-01-02 Transmission device for valve actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410002982.1A CN117803715A (en) 2024-01-02 2024-01-02 Transmission device for valve actuator

Publications (1)

Publication Number Publication Date
CN117803715A true CN117803715A (en) 2024-04-02

Family

ID=90423343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410002982.1A Pending CN117803715A (en) 2024-01-02 2024-01-02 Transmission device for valve actuator

Country Status (1)

Country Link
CN (1) CN117803715A (en)

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