CN120351327B - Heavy-calibre butterfly valve with self-closing function - Google Patents

Heavy-calibre butterfly valve with self-closing function

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Publication number
CN120351327B
CN120351327B CN202510659680.6A CN202510659680A CN120351327B CN 120351327 B CN120351327 B CN 120351327B CN 202510659680 A CN202510659680 A CN 202510659680A CN 120351327 B CN120351327 B CN 120351327B
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CN
China
Prior art keywords
plate
butterfly
sealing plate
butterfly plate
reset
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.)
Active
Application number
CN202510659680.6A
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Chinese (zh)
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CN120351327A (en
Inventor
吴红涛
吴娜
张旭锋
雷霆
董胜帅
陈兆阳
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.)
Henan Quanshun Flow Control Science & Technology Co ltd
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Henan Quanshun Flow Control Science & Technology Co ltd
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Application filed by Henan Quanshun Flow Control Science & Technology Co ltd filed Critical Henan Quanshun Flow Control Science & Technology Co ltd
Priority to CN202510659680.6A priority Critical patent/CN120351327B/en
Publication of CN120351327A publication Critical patent/CN120351327A/en
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Publication of CN120351327B publication Critical patent/CN120351327B/en
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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
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on 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
    • F16K1/32—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

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

Abstract

The invention relates to the technical field of self-closing valves, in particular to a large-caliber butterfly valve with a self-closing function, which comprises a mounting pipe, wherein a sealing plate and a butterfly plate which are matched with each other are arranged in the mounting pipe, the sealing plate and the butterfly plate respectively consist of a first half sealing plate, a first half butterfly plate, a second half sealing plate and a second half butterfly plate which are arranged on the same side, a reset component is arranged on one side of the first half sealing plate, a limiting plate is arranged on the second half butterfly plate in the direction of the same side as the reset component on the first half sealing plate, the reset component comprises a fixed pipe with an arc-shaped structure, a reset rod matched with the fixed pipe in structure is arranged in the fixed pipe in a sliding manner, one end of the reset rod, which is positioned in the fixed pipe, is provided with a reset spring, and the phenomenon of 'over-middle overturning' caused by pipeline medium pressure is effectively avoided by arranging the butterfly plate and the reset component, and the reset rod is pushed to return to the initial position by the reset spring, so that the self-closing process is completed.

Description

Heavy-calibre butterfly valve with self-closing function
Technical Field
The invention relates to the technical field of self-closing valves, in particular to a large-caliber butterfly valve with a self-closing function.
Background
Butterfly valves are a type of valve used in piping systems and are characterized by a rotating disc (i.e., a flap) to control the flow of fluid. Butterfly valves are widely used in various industrial fields, such as chemical industry, water treatment, food processing, etc., due to their advantages of simple structure, small size, light weight, low cost, and rapid opening and closing.
Currently, butterfly valves on the market generally rely on manual rotation to perform the opening and closing functions. However, given the inherent structural characteristics of butterfly valves, attempts to introduce a mechanism for automatic closing after use may present a significant technical challenge in that, once the butterfly plate rotates beyond its design limit (typically 90 degrees) during the valve opening phase, the asymmetric force-bearing surface created by the butterfly plate and the fluid flow direction will generate a reverse torque under the pressure of the pipeline medium, causing the butterfly plate to rotate in the opposite direction beyond the reference position, creating a 180 ° reverse deflection (i.e., a "neutral-turn" phenomenon). The unexpected overturning phenomenon not only seriously violates the normal working principle of the butterfly valve, but also is more critical to the sealing performance of the valve, because the coordination between the overturned butterfly plate and the valve seat is not tight any more, the sealing efficiency is greatly reduced, and the risk of medium leakage is obviously increased.
Based on the self-closing butterfly valve, the invention discloses a large-caliber butterfly valve with a self-closing function.
Disclosure of Invention
In order to solve the problem that the butterfly valve introducing an automatic closing mechanism is probably turned over in the middle position due to pipeline pressure in the opening process, so that the sealing performance is damaged and the risk of medium leakage is increased, the invention provides a large-caliber butterfly valve with a self-closing function, which comprises a mounting pipe, wherein a sealing plate and a butterfly plate which are matched with each other are arranged in the mounting pipe;
in the technical scheme, the disc plate is automatically reset after being used;
The sealing plate and the butterfly plate are respectively composed of a first half sealing plate, a first half butterfly plate, a second half sealing plate and a second half butterfly plate which are arranged on the same side, wherein a reset component is arranged on one side of the first half sealing plate, and a limiting plate is arranged on the second half butterfly plate in the direction of the same side as the reset component on the first half sealing plate;
after the rotary handle is loosened, the spring releases energy to push the reset rod to abut against the limit plate and the second half butterfly plate, and the butterfly plate is driven to reversely reset, so that the quick valve closing under no external power is realized.
In addition, in the reset mechanism, the wedge-shaped end face of the reset rod and the limiting plate form progressive thrust, and the physical limit of the avoidance port is combined to thoroughly block the middle position overturning path of the butterfly plate.
On this basis, the risk of overturning exists due to the pressure of the pipeline after the disc plate rotates beyond the middle position in use;
According to the technical scheme, the limiting plate is of an arc-shaped structure, the upper end and the lower end of the limiting plate are far away from the rotary rod, the fixed pipe and the limiting plate form a circulation port matched with the sealing plate and the butterfly plate, in an initial state, the top end of the reset rod is attached to the top end of the limiting plate, when the butterfly plate rotates for 90 degrees, the upper end and the lower end of the limiting plate are attached to the upper end and the lower end of the fixed pipe, one side of the second half butterfly plate is attached to the top end of the fixed pipe, and the reset rod is located in the fixed pipe.
In another scheme, in order to ensure certain tightness on the premise of automatic resetting, the pressure intensity of the pipeline is fully utilized;
As a further improvement of the technical scheme, a rotating rod is arranged in the mounting pipe perpendicular to the axial rotation of the mounting pipe, the first half sealing plate and the second half sealing plate are symmetrically arranged on two sides of the rotating rod, the first half sealing plate and the second half sealing plate are fixedly connected to the inner wall of the mounting pipe, the first half sealing plate and the second half sealing plate are rotationally connected with the rotating rod, and the first half butterfly plate and the second half butterfly plate are symmetrically fixedly arranged on two sides of the rotating rod.
In addition, grooves with conical structures are formed in the first half sealing plate and the second half sealing plate, the grooves of the first half sealing plate and the grooves of the second half sealing plate are in oblique symmetrical layout, contact surfaces of the first half butterfly plate and the second half butterfly plate, the first half butterfly plate, the second half butterfly plate and the first half sealing plate are of wedge-shaped inclined surface structures matched with the first half butterfly plate and the second half butterfly plate, avoidance openings are formed in the upper end and the lower end, which are contacted with the rotating rod, of the first half butterfly plate, the lower end, which are far away from the corresponding grooves in the first half sealing plate and the second half sealing plate, of the first half butterfly plate, the lower end, which are contacted with the rotating rod, of the fixed pipe, the two sides of the top end of the reset rod are of the wedge-shaped structures, the surface, which is matched with the limiting plate, of the reset rod is of the smooth structure, and the upper end and the lower end of the fixed pipe are far away from the rotating rod;
Through designing butterfly plate and closing plate into symmetrical split type structure, both use the rotary rod as central oblique symmetry overall arrangement, and the contact surface adopts wedge inclined plane and the toper recess of adaptation, split type design breaks down the butterfly plate motion into two sections independent strokes, symmetrical atress offset asymmetric hydrodynamic load, avoid the butterfly plate to surpass 90 back because of medium pressure reverse deflection, wedge inclined plane is accurate imbeds closing plate recess when the butterfly plate resets, form multistage sealed face, sealed vice contact pressure distribution is even, effectively prevents the medium leakage.
Compared with the prior art, the invention has the beneficial effects that:
1. In this heavy-calibre butterfly valve with self-closing function, realize preventing to go beyond the meso position upset, promote sealing performance, through setting up the butterfly plate and the subassembly that resets that have dodge mouthful, ensure that the butterfly plate can not exceed 90 degrees at the rotation in-process. The reset rod in the reset assembly elastically stretches and slides in the fixed pipe, elastic reset is realized through the action of the reset spring, the phenomenon of neutral position overturning caused by pipeline medium pressure is effectively avoided, the tight fit between the butterfly plate and the sealing plate is ensured, the sealing performance of the valve is improved, and the risk of medium leakage is reduced. Overall, the safety and reliability of the valve are improved.
2. In this large-caliber butterfly valve with self-closing function, realize reinforcing automatic re-setting function, ensure safe closing, reset the subassembly and loosen the rotatory handle after, promote the reset lever through reset spring, make the butterfly plate get back to initial position, accomplish the self-closing process, ensure that the butterfly valve can automatic re-setting close after using, even also can cut off the fluid supply rapidly under unmanned condition, improved the security of system. In addition, the design of limiting plate has further restricted the rotation scope of butterfly plate, prevents its excessive rotation.
3. In the large-caliber butterfly valve with the self-closing function, the conical structure groove on the sealing plate is matched with the wedge-shaped inclined plane structure of the butterfly plate to form close fit. Meanwhile, due to the smooth structural design of the reset rod and the limiting plate, friction loss between parts is reduced, the sealing effect of the butterfly valve is enhanced, the service life of the butterfly valve is prolonged, the maintenance cost is reduced, and the durability of the whole equipment is improved. In particular, the design of the wedge-shaped chamfer structure and the tapered groove makes the seal more reliable, reducing the likelihood of leakage.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view showing the internal structure of the installation tube of the present invention;
FIG. 3 is an exploded view of the structure of the butterfly plate of the present invention;
FIG. 4 is a schematic structural view of a sealing plate according to the present invention;
FIG. 5 is a schematic structural view of a sealing plate according to the present invention;
FIG. 6 is a schematic view of one of the butterfly plates according to the present invention;
FIG. 7 is a schematic view of a butterfly plate according to the second embodiment of the present invention;
FIG. 8 is a schematic view of a butterfly plate according to the third embodiment of the present invention;
FIG. 9 is a schematic diagram of a reset assembly according to the present invention;
FIG. 10 is a cross-sectional view of the reset assembly of the present invention;
FIG. 11 is a schematic view of the reset lever of the present invention;
FIG. 12 is a schematic view showing one of the states of the butterfly plate of the invention;
FIG. 13 is a schematic view showing a second state of the butterfly plate according to the present invention;
fig. 14 is a schematic view showing a state of the butterfly plate of the present invention.
The meaning of each reference sign in the figure is:
1. The device comprises a mounting pipe, a first half butterfly plate, a second half butterfly plate, a limiting plate, a5, a rotating rod, a 6, a rotating handle, a 7, a first half sealing plate, a 8, a second half sealing plate, a 9, an avoiding port, a 10, a fixed pipe, a 11, a reset rod, a 12 and a reset spring.
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.
Existing butterfly valves incorporating an automatic closing mechanism may cause "over-center" during opening due to pipeline pressure, thereby compromising sealing performance and increasing the risk of media leakage.
The invention provides a large-caliber butterfly valve with a self-closing function, which is shown in fig. 1-3, and comprises a mounting tube 1, wherein a rotary rod 5 is arranged in the mounting tube 1 and is perpendicular to the axial direction of the mounting tube, a rotary handle 6 is arranged at one end of the rotary rod 5, which is positioned outside the mounting tube 1, a sealing plate is fixedly arranged in the mounting tube 1, a butterfly plate which is matched with the sealing plate structure in a matched manner is rotatably arranged, and a circular circulation port is formed in the middle of the sealing plate.
Specifically, referring to fig. 3, the sealing plate is composed of a first half sealing plate 7 and a second half sealing plate 8 symmetrically disposed at both sides of the rotating rod 5, the first half sealing plate 7 and the second half sealing plate 8 are fixedly connected to the inner wall of the mounting tube 1, and the first half sealing plate 7 and the second half sealing plate 8 are rotatably connected to the rotating rod 5, and a circular flow port is formed at the centers of the first half sealing plate 7 and the second half sealing plate 8.
Further, referring to fig. 4-5, grooves with conical structures are formed on the first half-sealing plate 7 and the second half-sealing plate 8, and the grooves of the first half-sealing plate 7 and the second half-sealing plate 8 are in oblique symmetrical arrangement.
Further, referring to fig. 3 and 6-8, the butterfly plate is composed of a first half butterfly plate 2 and a second half butterfly plate 3 symmetrically fixed on two sides of the rotary rod 5, the first half butterfly plate 2 and the second half butterfly plate 3 are respectively distributed on the same side of the first half butterfly plate 7 and the second half butterfly plate 8, contact surfaces of the first half butterfly plate 2 and the second half butterfly plate 3, which are attached to the first half butterfly plate 7 and the second half butterfly plate 8, are wedge-shaped inclined surface structures which are matched with the first half butterfly plate 2 and the second half butterfly plate 3, and it can be seen through the working process of the butterfly plate in fig. 2 and 12 that in the state of resetting the butterfly plate, the wedge-shaped inclined surface structures on the periphery of the butterfly plate can be clamped into grooves on the corresponding sealing plates, and the grooves and the wedge-shaped inclined surface structures of the butterfly plate are in oblique symmetrical arrangement, so that the butterfly plate can rotate out when in use, and the butterfly plate can not exceed 90 degrees when being matched with the avoiding opening 9 formed at the end of the butterfly plate, and the corresponding grooves can be synchronously sealed after the butterfly plate is reversely rotated and reset.
Next, as shown in fig. 7 and 8, the upper and lower ends of the first half butterfly plate 2 and the second half butterfly plate 3, which are in contact with the rotating rod 5, are far away from the avoidance openings 9 formed on the sides of the corresponding grooves on the first half butterfly plate 7 and the second half butterfly plate 8, so that the upper and lower ends of the first half butterfly plate 2 and the second half butterfly plate 3 do not obstruct the rotation of the butterfly plate as a whole when the butterfly plate rotates, and the butterfly plate can be limited by the first layer after rotating by 90 degrees, so that the ends of the first half butterfly plate 2 and the second half butterfly plate 3 are attached to the ends of the first half butterfly plate 7 and the second half butterfly plate 8.
That is, the butterfly plate and the sealing plate are designed into a symmetrical split structure, the butterfly plate consists of a first half butterfly plate 2 and a second half butterfly plate 3, the sealing plate consists of a first half sealing plate 7 and a second half sealing plate 8, both the first half sealing plate and the second half sealing plate are in oblique symmetrical arrangement by taking the rotary rod 5 as the center, the contact surface adopts an adaptive wedge-shaped inclined plane and a conical groove, the middle position overturning is eliminated, the split design is used for decomposing the movement of the butterfly plate into two sections of independent strokes, symmetrical stress counteracts asymmetric hydrodynamic load (reverse torque in the background technology), reverse deflection of the butterfly plate due to medium pressure after exceeding 90 DEG is avoided, and the tightness is enhanced, namely the wedge-shaped inclined plane is accurately embedded into the sealing plate groove when the butterfly plate is reset, a multistage sealing surface is formed, the contact pressure of the sealing pair is uniformly distributed, and medium leakage is effectively prevented (the sealing failure problem in the contrast background technology).
Referring to fig. 2, 3 and 9-11, in order to enable the whole butterfly plate to automatically reset after rotating, and avoid the phenomenon of center position overturning of the butterfly plate, a reset component is arranged on one side of the first half sealing plate 7, a limiting plate 4 is arranged on the second half butterfly plate 3 in the same side direction as the reset component on the first half sealing plate 7, and a circulation port matched with the sealing plate and the butterfly plate is formed by the fixing tube 10 and the limiting plate 4.
Specifically, the reset assembly comprises a fixed pipe 10 with an arc-shaped structure, a reset rod 11 matched with the structure of the fixed pipe 10 is arranged in the fixed pipe 10 in a sliding manner, a reset spring 12 is arranged at one end of the reset rod 11 positioned in the fixed pipe 10, and thus the reset rod 11 can elastically stretch and slide in the fixed pipe 10.
Wherein limiting plate 4 is arc structure, and rotary rod 5 setting is kept away from at its upper and lower both ends, and rotary rod 5 setting is kept away from equally to the upper and lower both ends of fixed pipe 10, so can cause whole butterfly plate to rotate 90 degrees, and in addition, reset rod 11 top both sides are wedge structure, and reset rod 11 is smooth structure with the one side that limiting plate 4 laminated mutually, that is to say at the butterfly plate in-process of rotating 90 degrees, the tip of limiting plate 4 will extrude the smooth structure portion of reset rod 11 first, later one side of second half butterfly plate 3 continues to extrude reset rod 11, until reset rod 11 enters into fixed pipe 10.
That is, the reset rod 11 elastically stretches and contracts in the fixed pipe 10 through the reset spring 12, and the limiting plate 4 is linked with the second half butterfly plate 3. When the butterfly plate is opened, the limit plate 4 presses the smooth end face of the reset rod 11 to compress the reset spring 12 for storing energy, after the rotary handle 6 is loosened, the spring releases energy to push the reset rod 11 to abut against the limit plate 4 and the second half butterfly plate 3 to drive the butterfly plate to reversely reset, forced automatic reset is realized, the spring energy storage and the medium pressure cooperate, rapid valve closing (responding to the failure safety requirement in the background technology) without external power is realized, double protection of overturn prevention is realized, the wedge-shaped end face of the reset rod 11 and the limit plate 4 form progressive thrust, and the physical limit of the avoidance port 9 is combined to thoroughly block the central position overturning path of the butterfly plate.
In addition, the sealing plate groove and the butterfly plate wedge-shaped inclined plane are in oblique symmetry layout, medium pressure acts on the butterfly plate asymmetric surface in the resetting process to form auxiliary resetting moment, superposition of fluid power and spring force is realized, driving force required by resetting is obviously reduced (compared with the defect of high energy consumption of the traditional self-closing valve), the medium pressure pushes the butterfly plate wedge-shaped surface to be tightly attached to the groove, the abrasion gap of the sealing pair is dynamically compensated, and the sealing efficiency is kept for a long time.
In the specific process, as shown in fig. 2 and 12-14, in the initial state, the top end of the reset rod 11 is attached to the top end of the limiting plate 4;
when the butterfly plate rotates by 90 degrees, the upper end and the lower end of the limiting plate 4 are attached to the upper end and the lower end of the fixed pipe 10, and one side of the second half butterfly plate 3 is attached to the top end of the fixed pipe 10;
after the worker releases the rotary handle 6, the reset rod 11 starts to elastically reset under the action of the reset spring 12, then the top end of the reset rod 11 gradually rotates against one side of the second half butterfly plate 3, and then the top end of the reset rod is turned to against the end part of the limiting plate 4 to enable the butterfly plate to continuously rotate until the butterfly plate resets;
In addition, under the laminating limiting action of combining the tip of limiting plate 4 and fixed pipe 10, make the butterfly plate can not cross the median upset, secondly in the butterfly plate at reset lever 11 support the tip of limiting plate 4 and the one side of second half butterfly plate 3 reset the in-process, once the butterfly plate resets and rotates certain angle after, also can promote the rotation of second half butterfly plate 3 in step through the pressure of installing the intraductal medium of pipe 1, supplementary butterfly plate resets gradually, guarantees can automatic re-setting close circulation after whole butterfly valve uses.
In summary, through setting up the first half butterfly plate 2 and the second half butterfly plate 3 that have dodge mouthful 9 to and reset assembly (including fixed pipe 10, reset lever 11 and reset spring 12), this heavy-calibre butterfly valve has prevented effectively that "through the emergence of median upset" phenomenon, has showing and has promoted sealing performance, has reduced the medium leakage risk. Meanwhile, the elastic reset function of the reset assembly ensures that the butterfly valve can be automatically closed after being used, and the safety and reliability of the system are improved. The optimized structural design not only enhances the sealing effect, but also prolongs the service life of the equipment and reduces the maintenance cost. In addition, the design of medium pressure auxiliary reset is utilized, so that the reset efficiency is further improved, the butterfly valve can stably operate under various complex working conditions, and the problem that the conventional butterfly valve introducing an automatic closing mechanism possibly causes 'neutral position overturning' due to pipeline pressure in the opening process is effectively solved, and the sealing performance is damaged and the medium leakage risk is increased.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1.一种带有自闭功能的大口径蝶阀，其包括安装管（1），所述安装管（1）内设置有配套使用的密封板和蝶板，其特征在于：密封板和碟板均为对半设置，且密封板和碟板交叉布局，密封板与碟板的贴合部位分别为凹形和凸型结构；1. A large-caliber butterfly valve with a self-closing function, comprising a mounting tube (1), wherein a sealing plate and a butterfly plate are arranged in the mounting tube (1), wherein the sealing plate and the butterfly plate are arranged in half, and the sealing plate and the butterfly plate are arranged in a cross-arrangement, and the fitting parts of the sealing plate and the butterfly plate are respectively concave and convex structures; 密封板和碟板同侧的边缘分别设置有结构相适配的弧形结构的弹性伸缩杆和限位板（4）；The edges of the sealing plate and the disc plate on the same side are respectively provided with an elastic telescopic rod and a limit plate (4) of a structurally compatible arc structure; 所述限位板（4）通过碟板的旋转挤压弹性伸缩杆，且限位板（4）在碟板转动一定角度后与弹性伸缩杆相贴合；The limiting plate (4) squeezes the elastic telescopic rod through the rotation of the disc plate, and the limiting plate (4) fits the elastic telescopic rod after the disc plate rotates to a certain angle; 所述密封板包括第一半密封板（7）和第二半密封板（8），蝶板包括第一半蝶板（2）和第二半蝶板（3），其中：The sealing plate comprises a first half sealing plate (7) and a second half sealing plate (8), and the butterfly plate comprises a first half butterfly plate (2) and a second half butterfly plate (3), wherein: 第一半密封板（7）和第一半蝶板（2）同侧设置；The first half sealing plate (7) and the first half butterfly plate (2) are arranged on the same side; 第二半密封板（8）和第二半蝶板（3）同侧设置；The second half sealing plate (8) and the second half butterfly plate (3) are arranged on the same side; 所述第一半密封板（7）一侧上设置有复位组件，所述第二半蝶板（3）上位于与第一半密封板（7）上复位组件同侧的方向设置有限位板（4）；A reset assembly is provided on one side of the first half sealing plate (7), and a limit plate (4) is provided on the second half butterfly plate (3) in the direction of the same side as the reset assembly on the first half sealing plate (7); 所述复位组件包括弧形结构的固定管（10），所述固定管（10）内滑动设置有与固定管（10）结构相适配的复位杆（11），所述复位杆（11）位于固定管（10）内的一端设置有复位弹簧（12）；The reset assembly comprises a fixed tube (10) with an arc-shaped structure, a reset rod (11) adapted to the structure of the fixed tube (10) being slidably arranged in the fixed tube (10), and a reset spring (12) being arranged at one end of the reset rod (11) located in the fixed tube (10); 所述安装管（1）内垂直于其轴向转动设置有旋转杆（5），所述旋转杆（5）位于安装管（1）外的一端上设置有旋转把手（6）；所述第一半密封板（7）和第二半密封板（8）对称设置在旋转杆（5）的两侧，所述第一半密封板（7）和第二半密封板（8）固定连接在安装管（1）内壁上，且所述第一半密封板（7）和第二半密封板（8）与旋转杆（5）转动连接，所述第一半蝶板（2）和第二半蝶板（3）对称固设在旋转杆（5）两侧。A rotating rod (5) is provided in the mounting tube (1) for rotation perpendicular to the axial direction thereof, and a rotating handle (6) is provided on one end of the rotating rod (5) located outside the mounting tube (1); the first half sealing plate (7) and the second half sealing plate (8) are symmetrically arranged on both sides of the rotating rod (5), the first half sealing plate (7) and the second half sealing plate (8) are fixedly connected to the inner wall of the mounting tube (1), and the first half sealing plate (7) and the second half sealing plate (8) are rotationally connected to the rotating rod (5), and the first half butterfly plate (2) and the second half butterfly plate (3) are symmetrically fixed on both sides of the rotating rod (5). 2.根据权利要求1所述的带有自闭功能的大口径蝶阀，其特征在于：所述限位板（4）呈弧形结构，其上下两端远离旋转杆（5）设置；2. The large-caliber butterfly valve with a self-closing function according to claim 1, characterized in that: the limit plate (4) is an arc-shaped structure, and its upper and lower ends are arranged away from the rotating rod (5); 所述固定管（10）和限位板（4）形成与密封板和蝶板相适配的流通口。The fixed tube (10) and the limiting plate (4) form a flow opening that is compatible with the sealing plate and the butterfly plate. 3.根据权利要求1所述的带有自闭功能的大口径蝶阀，其特征在于：所述第一半密封板（7）和第二半密封板（8）上均开设有锥形结构的凹槽，且所述第一半密封板（7）和第二半密封板（8）的凹槽呈斜对称布局。3. The large-caliber butterfly valve with a self-closing function according to claim 1 is characterized in that: the first half sealing plate (7) and the second half sealing plate (8) are both provided with grooves of a conical structure, and the grooves of the first half sealing plate (7) and the second half sealing plate (8) are arranged in an obliquely symmetrical layout. 4.根据权利要求3所述的带有自闭功能的大口径蝶阀，其特征在于：所述第一半蝶板（2）和第二半蝶板（3）与第一半密封板（7）和第二半密封板（8）相贴合的接触面为与第一半蝶板（2）和第二半蝶板（3）相适配的楔形斜面结构。4. The large-caliber butterfly valve with a self-closing function according to claim 3 is characterized in that the contact surfaces between the first half butterfly plate (2) and the second half butterfly plate (3) and the first half sealing plate (7) and the second half sealing plate (8) are wedge-shaped inclined surface structures adapted to the first half butterfly plate (2) and the second half butterfly plate (3). 5.根据权利要求4所述的带有自闭功能的大口径蝶阀，其特征在于：第一半蝶板（2）与旋转杆（5）接触的上下两端处，远离第一半密封板（7）对应凹槽的一侧均开设有避让口（9）；5. The large-caliber butterfly valve with a self-closing function according to claim 4 is characterized in that: a relief opening (9) is provided at the upper and lower ends of the first half butterfly plate (2) where the first half butterfly plate (2) contacts the rotating rod (5) and is located away from the corresponding groove of the first half sealing plate (7); 第二半蝶板（3）与旋转杆（5）接触的上下两端处，远离第二半密封板（8）对应凹槽的一侧均开设有避让口（9）。At the upper and lower ends of the second half butterfly plate (3) where the second half butterfly plate (3) contacts the rotating rod (5), a side away from the corresponding groove of the second half sealing plate (8) is provided with an avoidance opening (9). 6.根据权利要求1所述的带有自闭功能的大口径蝶阀，其特征在于：所述复位杆（11）顶端两侧均为楔形结构，且所述复位杆（11）与限位板（4）相贴合的一面为圆滑结构。6. The large-caliber butterfly valve with a self-closing function according to claim 1 is characterized in that both sides of the top of the reset rod (11) are wedge-shaped structures, and the side of the reset rod (11) that fits the limit plate (4) is a smooth structure. 7.根据权利要求6所述的带有自闭功能的大口径蝶阀，其特征在于：所述固定管（10）的上下两端远离旋转杆（5）设置。7. The large-caliber butterfly valve with a self-closing function according to claim 6, characterized in that the upper and lower ends of the fixed tube (10) are arranged away from the rotating rod (5).
CN202510659680.6A 2025-05-21 2025-05-21 Heavy-calibre butterfly valve with self-closing function Active CN120351327B (en)

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CN116753316A (en) * 2023-06-07 2023-09-15 天津祥嘉流体控制系统有限公司 High clean metal hard seal butterfly valve
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CN208057968U (en) * 2018-04-18 2018-11-06 科达阀门科技有限公司 A kind of butterfly valve of good seal performance
CN118998335A (en) * 2024-09-02 2024-11-22 林金炜 Eccentric butterfly valve
CN119641951A (en) * 2024-12-16 2025-03-18 上海华麒育泰工程材料有限公司 A three-way valve

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Publication number Priority date Publication date Assignee Title
CN116753316A (en) * 2023-06-07 2023-09-15 天津祥嘉流体控制系统有限公司 High clean metal hard seal butterfly valve
CN221054314U (en) * 2023-09-26 2024-05-31 大连驰恒系统控制技术有限公司 Stainless steel seal assembly of regulating valve

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