Leakage-proof electric butterfly valve
By combining the arc-shaped clamping plate and the pushing mechanism with the limit rebound mechanism, the leakage problem caused by the deformation of the butterfly valve sealing ring is solved, and the sealing ring is effectively clamped and automatically returned, thus improving the sealing performance of the butterfly valve.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-03-13
AI Technical Summary
Existing butterfly valves are prone to leakage because the sealing rings deform due to repeated opening and closing of the butterfly plate, which reduces the sealing performance.
The sealing ring is clamped and automatically returned to its original position by using an arc-shaped clamping plate and a pushing mechanism, and the limiting and rebound mechanism ensures the sealing effect.
This improves the sealing performance of the butterfly valve, reduces the probability of leakage, and ensures a good seal during long-term use.
Smart Images
Figure CN223991967U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of electric butterfly valve technology, and more specifically, to a leak-proof electric butterfly valve. Background Technology
[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that can be used to control the opening and closing of low-pressure pipeline media. A butterfly valve is a type of valve whose closing element (valve disc or butterfly plate) is a disc that rotates around the valve shaft to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals and radioactive media.
[0003] Butterfly valves in the prior art typically include a valve body, a valve stem, a sealing ring, and a butterfly plate. The butterfly plate is located in the fluid passage within the valve body, and the fluid passage is sealed through the cooperation between the butterfly plate and the sealing ring. After long-term use, the butterfly plate repeatedly opens and closes, causing the sealing ring to deform, which reduces the sealing performance of the butterfly valve and makes it prone to leakage. Utility Model Content
[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a leak-proof electric butterfly valve, which solves the technical problem that butterfly valves in related technologies typically include a valve body, valve stem, sealing ring, and butterfly plate. The butterfly plate is disposed in the fluid passage in the valve body, and the fluid passage is sealed by the cooperation between the butterfly plate and the sealing ring. After long-term use, the sealing ring is deformed due to the repeated opening and closing of the butterfly plate, which reduces the sealing performance of the butterfly valve and makes it easy for the butterfly valve to leak.
[0005] According to one aspect, at least one embodiment of this disclosure provides a leak-proof electric butterfly valve, including a valve body, and further comprising:
[0006] A sealing ring is disposed inside the valve body and is used to seal the valve body.
[0007] The valve body has multiple sets of limit rebound mechanisms horizontally arranged inside, and an arc-shaped clamping plate is horizontally mounted on its inner side. The arc-shaped clamping plate covers the outside of the sealing ring. The limit rebound mechanism is used to limit the arc-shaped clamping plate and drive the arc-shaped clamping plate back to its original position.
[0008] A pushing mechanism is installed on the outside of the valve body, and the inner side of the pushing mechanism abuts against the outer side of the arc-shaped clamping plate. The pushing mechanism is used to push the arc-shaped clamping plate to clamp the sealing ring.
[0009] To achieve movement limitation of the arc-shaped clamping plate and automatic return after the force is removed, the limiting and rebound mechanism includes:
[0010] A cylindrical body, which is installed inside the valve body;
[0011] A first limiting rod is horizontally installed inside the cylinder.
[0012] A movable disk, which is horizontally movably sleeved on the first limiting rod;
[0013] A connecting rod is installed on the inner side of the movable disk and moves synchronously with the movable disk. The inner end of the connecting rod is connected to the outer side of the arc-shaped clamping plate.
[0014] A first spring is sleeved on the first limiting rod, and its two ends are respectively connected to the cylinder and the moving disk.
[0015] In order to drive the arc-shaped clamping plate to clamp the sealing ring, the pushing mechanism includes:
[0016] A first housing is mounted on the outside of the valve body;
[0017] A small electric actuator, wherein the small electric actuator is disposed inside the first housing;
[0018] A sliding plate is installed on the outer end of the telescopic end of the small electric push rod and moves horizontally as the telescopic end of the small electric push rod extends and retracts.
[0019] A push plate is mounted on the inner side of the sliding plate via a moving rod and moves synchronously with the sliding plate.
[0020] In order to adjust the horizontal position of the push plate, through holes are provided on the outer side of the valve body and the middle of the inner side of the first housing. The inner diameter of the through holes is adapted to the outer diameter of the moving rod.
[0021] In order to limit the sliding of the sliding plate, the inner top wall and inner bottom wall of the first housing are both equipped with slide rails, and the sliding plate is slidably connected to the slide rails.
[0022] In order to ensure that the sealing effect is not affected when the sealing ring is clamped, the sealing ring is shaped as a wide ring on both sides and a narrow ring in the middle, and the two ends of the sealing ring are connected to the inner wall of the valve body.
[0023] To achieve the retraction of the transmission plate, a retraction mechanism is provided inside the valve body, the retraction mechanism comprising:
[0024] A second housing is installed inside the valve body;
[0025] The second limiting rod is installed inside the second housing;
[0026] A movable plate, which is movably sleeved on the second limiting rod;
[0027] A connecting plate, which is installed inside the movable plate and moves synchronously with the movable plate;
[0028] The second spring is sleeved on the second limiting rod, and its two ends are respectively connected to the second housing and the moving plate.
[0029] In order to drive the two sides of the clamped sealing ring to return to their original position, multiple transmission plates are connected to the outer side of the sealing ring. The transmission plates are symmetrically arranged on the outer side of the sealing ring, and the outer side of the transmission plates is connected to the inner side of the connecting plate.
[0030] To limit the movement of the movable plate, square strips are installed on the inner top and bottom walls of the second housing, and square slots are provided on the upper and lower sides of the movable plate. The movable plate moves along the square strips through the square slots.
[0031] In order to make the sealing ring fit more closely to the closing part after being clamped by the arc-shaped clamping plate, a butterfly groove is provided on the inner side of the arc-shaped clamping plate.
[0032] The beneficial effects of the embodiments disclosed herein are as follows:
[0033] In this disclosure, the sealing ring is clamped and covered by the arc-shaped clamping plate and the pushing mechanism when the closing part is in the closed state. This ensures that the sealing ring can still seal the closing part after long-term use, thus reducing the probability of leakage in the butterfly valve. The limit and rebound mechanism limits the movement of the arc-shaped clamping plate, ensuring the clamping effect of the sealing ring after the arc-shaped clamping plate moves. It can also automatically return the arc-shaped clamping plate to its original position after the force on it disappears. Attached Figure Description
[0034] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0035] Figure 1 This is a schematic diagram of the structure of the electric butterfly valve when it is closed in one embodiment of this disclosure;
[0036] Figure 2 This is a vertical cross-sectional view of the internal structure of the valve body in one embodiment of this disclosure;
[0037] Figure 3 This is a schematic diagram of the auxiliary component covering the outside of the sealing ring in one embodiment of the present disclosure;
[0038] Figure 4 For one embodiment of this disclosure Figure 2 Enlarged schematic diagram of the structure at point A in the middle;
[0039] Figure 5 This is a vertical cross-sectional view of the internal structure of the limiting and rebounding mechanism in one embodiment of this disclosure;
[0040] Figure 6 This is a cross-sectional schematic diagram of the propulsion mechanism structure in one embodiment of the present disclosure;
[0041] Figure 7 This is a vertical cross-sectional view of the pull-back mechanism structure in one embodiment of the present disclosure.
[0042] In the diagram: 1. Valve body; 2. Sealing ring; 3. Limiting and rebounding mechanism; 4. Arc-shaped clamping plate; 5. Pushing mechanism; 6. Pulling mechanism; 7. Transmission plate; 8. Electric drive component; 9. Transmission shaft; 10. Closing component;
[0043] 301. Cylinder body; 302. First limiting rod; 303. Moving disk; 304. Connecting rod; 305. First spring;
[0044] 501. First housing; 502. Small electric actuator; 503. Sliding plate; 504. Push plate;
[0045] 601. Second housing; 602. Second limiting rod; 603. Moving plate; 604. Connecting plate; 605. Second spring. Detailed Implementation
[0046] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0047] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0048] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0049] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0050] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0051] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0052] like Figures 1-7 As shown, this embodiment illustrates a leak-proof electric butterfly valve, including a valve body 1, a sealing ring 2, a limit rebound mechanism 3, an arc-shaped clamping plate 4, and a pushing mechanism 5. Compared with the prior art, in this embodiment, through the cooperation of the arc-shaped clamping plate 4 and the pushing mechanism 5, the sealing ring 2 can be clamped and covered on the closing member 10 when the closing member is in the closed state, so that the sealing ring 2 can still provide a sealing effect on the closing member 10 after long-term use, ensuring the sealing effect of the sealing ring 2 on the closing member 10 and reducing the probability of leakage of the butterfly valve. Through the limit rebound mechanism 3, the movement limit of the arc-shaped clamping plate 4 is realized, ensuring the clamping effect of the arc-shaped clamping plate 4 on the sealing ring 2 after the movement of the arc-shaped clamping plate 4, and can drive the arc-shaped clamping plate 4 to automatically return to its original position after the force is removed.
[0053] An electric drive unit 8 is provided on the upper side of the valve body 1, and a transmission shaft 9 is rotatably mounted on the lower side of the electric drive unit 8. A closing element 10 is connected to the bottom end of the transmission shaft 9. The closing element 10 is located inside the valve body 1 and the sealing ring 2. The electric drive unit 8 can drive the transmission shaft 9 to rotate and drive the closing element 10 to open or close.
[0054] like Figure 1 and Figure 2 As shown, the sealing ring 2 is located inside the valve body 1. The sealing ring 2 is shaped like a wide-sided, narrow-middle ring. Both ends of the sealing ring 2 are connected to the inner wall of the valve body 1. Multiple sets of limit and rebound mechanisms 3 are fixedly installed on both sides of the inner wall of the valve body 1. An arc-shaped clamping plate 4 is horizontally installed on the inner side of the mechanism. The arc-shaped clamping plate 4 covers the outer side of the sealing ring 2. A butterfly groove is opened on the inner side of the arc-shaped clamping plate 4. When the arc-shaped clamping plate 4 clamps the sealing ring 2 onto the closing member 10, the clamped part of the sealing ring 2 will enter the butterfly groove under the pushing action of the closing member 10. Figure 5 As shown, the limiting and rebounding mechanism 3 includes a cylinder 301, a first limiting rod 302, a moving disk 303, a connecting rod 304, and a first spring 305. The sealing ring 2 is an elastic sealing structure. The shape of the middle part of the sealing ring 2 can be changed under the action of the arc-shaped clamping plate 4. The limiting and rebounding mechanism 3 plays a limiting and returning role on the arc-shaped clamping plate 4, thereby realizing the automatic return of the arc-shaped clamping plate 4 after the force disappears.
[0055] like Figures 1-4 As shown, the pushing mechanism 5 is installed on the outside of the valve body 1, and the inner side of the pushing mechanism 5 abuts against the outer side of the arc-shaped clamping plate 4, as shown. Figure 6 As shown, the pushing mechanism 5 includes a first housing 501, a small electric push rod 502, a sliding plate 503, and a push plate 504. A through hole is provided in the middle of the outer side of the valve body 1 and the inner side of the first housing 501. The inner diameter of the through hole is adapted to the outer diameter of the moving rod. When the moving rod moves, it will move inside the through hole. The inner top wall and inner bottom wall of the first housing 501 are equipped with slide rails. The sliding plate 503 is slidably connected to the slide rail. When the sliding plate 503 slides, the slide rail limits the sliding of the sliding plate 503. When the push plate 504 inside the pushing mechanism 5 moves inward, it will drive the arc-shaped clamping plate 4 to clamp the sealing ring 2, thereby causing the arc-shaped clamping plate 4 to clamp the sealing ring 2 on the closing member 10.
[0056] like Figure 2 and Figure 3 As shown, a pull-back mechanism 6 is provided inside the valve body 1. Multiple transmission plates 7 are connected to the outer side of the sealing ring 2. The transmission plates 7 are symmetrically arranged on the outer side of the sealing ring 2. The outer side of the transmission plates 7 is connected to the inner side of the connecting plate 604, as shown. Figure 7As shown, the pull-back mechanism 6 includes a second housing 601, a second limiting rod 602, a moving plate 603, a connecting plate 604, and a second spring 605. Square bars are installed on the inner top wall and inner bottom of the second housing 601. Square slots are provided on the upper and lower sides of the moving plate 603. The moving plate 603 moves along the square bars through the square slots. The square bars limit the movement of the moving plate 603 through the square slots. When the clamping of the sealing ring 2 by the arc-shaped clamping plate 4 is released, the sealing ring 2 can quickly return to its original position under the action of the pull-back mechanism 6 and the transmission plate 7.
[0057] Working principle: When the closing element 10 inside the valve body 1 is in the closed state, the small electric push rod 502 is activated. The telescopic end of the small electric push rod 502 retracts, causing the sliding plate 503 to slide inward along the slide rail. The sliding plate 503 drives the push plate 504 to move inward via the moving rod. The push plate 504 pushes the arc-shaped clamping plate 4 to move inward. The arc-shaped clamping plate 4 causes the sealing ring 2 to clamp onto the closing element 10, thereby allowing the sealing ring 2 to seal the closing element more closely. During the closing process of component 10, the connecting rod 304 will drive the moving plate 303 to move inward along the first limiting rod 302 and compress the first spring 305. The transmission plate 7 will drive the moving plate 603 to move inward along the second limiting rod 602 through the connecting plate 604 and compress the second spring. Therefore, when the force applied by the pushing mechanism 5 to the arc-shaped clamping plate 4 is canceled, the limiting rebound mechanism 3 will drive the arc-shaped clamping plate 4 to return to its original position, and the pull-back mechanism 6 will drive the sealing ring 2 to return to its original position through the transmission plate 7, so as not to affect the normal opening of the closing component 10.
[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A leak-tight electrically operated butterfly valve comprising a valve body (1), characterized in that, Also include: The sealing ring (2) is arranged in the inside of the valve body (1), and the sealing ring (2) is used for sealing the valve body (1); The limit rebound mechanism (3) is horizontally arranged in the inside of the valve body (1), the inner side of which is horizontally movably installed with an arc-shaped clamping plate (4), the arc-shaped clamping plate (4) is covered on the outside of the sealing ring (2), and the limit rebound mechanism (3) is used for limiting and driving the arc-shaped clamping plate (4) to reset; The push mechanism (5) is installed on the outside of the valve body (1), the inner side of the push mechanism (5) is abutted on the outside of the arc-shaped clamping plate (4), and the push mechanism (5) is used for pushing the arc-shaped clamping plate (4) to clamp the sealing ring (2).
2. A leak-proof electric butterfly valve according to claim 1, characterized in that, The limit rebound mechanism (3) comprises: The cylinder body (301) is installed in the inside of the valve body (1); The first limiting rod (302) is horizontally installed in the inside of the cylinder body (301); The moving disc (303) is movably sleeved on the first limiting rod (302); The connecting rod (304) is installed on the inner side of the moving disc (303) and moves synchronously with the moving disc (303), and the inner end of the connecting rod (304) is connected with the outer side of the arc-shaped clamping plate (4); The first spring (305) is sleeved on the first limiting rod (302), and the two ends of the first spring (305) are connected with the cylinder body (301) and the moving disc (303) respectively.
3. A leak-proof electric butterfly valve according to claim 2, characterized in that The push mechanism (5) comprises: The first shell (501) is installed on the outside of the valve body (1); The small electric push rod (502) is arranged in the inside of the first shell (501); The sliding plate (503) is installed on the outer end of the telescopic end of the small electric push rod (502) and moves horizontally with the telescopic end of the small electric push rod (502); The push plate (504) is movably installed on the inner side of the sliding plate (503) through the moving rod and moves synchronously with the sliding plate (503).
4. A leak-proof electric butterfly valve according to claim 3, characterized in that The through hole is formed in the middle of the outer side of the valve body (1) and the inner side of the first shell (501), and the inner diameter of the through hole is matched with the outer diameter of the moving rod.
5. A motor-operated butterfly valve according to claim 3, wherein The inner top wall and the inner bottom wall of the first shell (501) are provided with sliding rails, and the sliding plate (503) is slidably connected with the sliding rails.
6. A leak-proof electric butterfly valve according to claim 1, characterized in that, The sealing ring (2) is in the shape of wide on both sides and narrow in the middle, and the two ends of the sealing ring (2) are connected with the inner wall of the valve body (1).
7. A leak-proof electric butterfly valve according to claim 1, characterized in that, The inside of the valve body (1) is provided with a pullback mechanism (6), and the pullback mechanism (6) comprises: The second shell (601) is installed in the inside of the valve body (1); A second limiting rod (602) is installed inside the second shell (601); A moving plate (603) is movably sleeved on the second limiting rod (602); A connecting plate (604) is installed on the inner side of the moving plate (603) and moves synchronously with the moving plate (603); A second spring (605) is sleeved on the second limiting rod (602) and connected with the second shell (601) and the moving plate (603) at both ends.
8. A leak-proof electric butterfly valve according to claim 7, characterized in that A plurality of transmission plates (7) are connected to the outer side of the sealing ring (2), the transmission plates (7) are symmetrically arranged on the outer side of the sealing ring (2), and the outer side of the transmission plate (7) is connected with the inner side of the connecting plate (604).
9. A leak-proof electric butterfly valve according to claim 7, characterized in that, The inner top wall and the inner bottom wall of the second shell (601) are both installed with square bars, square grooves are formed on the upper and lower sides of the moving plate (603), and the moving plate (603) moves along the square bars through the square grooves.
10. The leak-proof electric butterfly valve according to claim 1, wherein The inner side of the arc-shaped clamping plate (4) is provided with a butterfly-shaped groove.