Intelligent control safety cut-off valve
By enhancing the sealing performance of the butterfly valve through the design of the hydraulic control module and elastic components, the problem of butterfly valve sealing failure under high pressure is solved, and the stable use of butterfly valve under high pressure is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WUZHOU VALVE
- Filing Date
- 2026-04-30
- Publication Date
- 2026-06-16
AI Technical Summary
Under high-pressure conditions, the sealing surface between the butterfly plate and the valve seat of existing butterfly valves is prone to sealing failure and self-locking failure due to medium pressure fluctuations or vibrations, resulting in butterfly plate deflection and leakage, which affects normal use.
The system employs a hydraulic control module and elastic component design. It enhances the seal by squeezing the baffle with liquid pressure, strengthens the seal by utilizing the deformation of the elastic and flexible rings, provides uniform pressure relief with the guide block, and reduces deformation with the rotating shaft buffer block, thus achieving self-locking and uniform flow.
It improves the sealing performance of the butterfly valve under high pressure, reduces the probability of butterfly plate deflection and leakage, extends the service life of the valve, and ensures the normal use of the valve.
Smart Images
Figure CN122216355A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of butterfly valve technology, and in particular to an intelligent control safety shut-off valve. Background Technology
[0002] A shut-off valve is a valve primarily used to connect or disconnect the flow of media in a pipeline. In a pipeline system, a shut-off valve plays the role of a "switch." Shut-off valves can be gate valves, globe valves, ball valves, and butterfly valves, among others. Butterfly valves inherently possess the function of regulating flow among shut-off valves. Existing butterfly valves generally consist of a control module, a rotating shaft, a valve plate, and a valve seat. Although butterfly valves have advantages such as simple structure, flow regulation, and rapid opening and closing, existing butterfly valves still have the following technical defects: Under high-pressure conditions, the sealing surface between the butterfly plate and the valve seat of traditional butterfly valves is prone to sealing failure due to fluctuations in medium pressure or vibration. Especially when the pressure in the pipeline increases due to the need to connect and disconnect the liquid, most butterfly valves rely on mechanical locking or external power to maintain their position. Under long-term high-pressure impact, self-locking failure is likely to occur. Once the self-locking of the butterfly valve fails, the butterfly plate will be compressed and deflected, causing leakage at the edge of the butterfly plate, which will affect the normal use of the butterfly valve. Summary of the Invention
[0003] In order to overcome the shortcomings mentioned in the background art, the present invention provides an intelligent control safety shut-off valve.
[0004] The technical solution is as follows: A smart control safety shut-off valve includes a hydraulic control module disposed on the valve body and a rotating shaft sealed and rotatably connected to the valve body. The hydraulic control module is used to control the rotation of the rotating shaft. The rotating shaft is provided with a first butterfly plate. The first butterfly plate is sealed and slidably connected to a second butterfly plate. A plurality of elastic elements distributed circumferentially are fixed between the first butterfly plate and the second butterfly plate. The first butterfly plate is provided with a plurality of first holes distributed circumferentially, and the second butterfly plate is provided with a baffle. A valve seat is fixedly connected to the valve body, and an elastic ring that fits against the second butterfly plate is fixedly connected to the valve seat.
[0005] To further explain, the diameter of the first hole gradually increases from one end away from the baffle to the other end.
[0006] To further explain, the second butterfly plate is fixedly connected to a first flexible ring, and the first butterfly plate is fixedly connected to a second flexible ring. The first flexible ring and the second flexible ring are attached to each other and squeezed against each other to seal the connection between the second butterfly plate and the first butterfly plate. The first butterfly plate is fixedly connected to a third flexible ring, and the second butterfly plate is used to squeeze the third flexible ring.
[0007] To further explain, the thickness of the first flexible ring gradually decreases from one side near the rotating shaft to the other side, while the thickness of the second flexible ring and the thickness of the third flexible ring both gradually increase from one side near the rotating shaft to the other side.
[0008] Further explanation: the rotating shaft is fixedly connected to a connecting ring that rotates within the first butterfly plate; the connecting ring is fixedly connected to a limiting block; the rotating shaft is rotatably connected to the first butterfly plate; the second butterfly plate is rotatably connected to the baffle; a limiting groove is provided within the first butterfly plate; the limiting block slides within the limiting groove; the limiting block is used to drive the first butterfly plate to rotate; a first bevel gear is fixedly connected to the connecting ring; a second bevel gear meshing with the first bevel gear is rotatably connected to the first butterfly plate; the second bevel gear is splinedly connected to the baffle; the second butterfly plate is provided with circumferentially distributed second holes of the same number as the first holes; the axis of the second holes is collinear with the axis of the adjacent first holes; the baffle is used to seal all the second holes.
[0009] To further explain, the maximum diameter of the first hole is smaller than the diameter of the second hole.
[0010] To further explain, the contact surface between the second butterfly plate and the elastic ring is arc-shaped.
[0011] To further explain, the rotating shaft is fixedly connected to buffer blocks that are symmetrically distributed vertically, and the buffer blocks are fixedly connected to flow guide blocks, which are used to guide the liquid.
[0012] To further explain, taking a vertical plane parallel to the axis of the valve body as a reference, the sum of the projected areas of the symmetrically distributed guide blocks on this vertical plane is A, and the sum of the projected areas of the first butterfly plate and the second butterfly plate on this vertical plane is B, where A = B.
[0013] To further clarify, the buffer block is made of an elastic material.
[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention uses a liquid-pressed baffle. The greater the liquid pressure, the greater the pressure exerted by the baffle on the second butterfly plate, the greater the force exerted by the second butterfly plate on the elastic ring, and the greater the deformation of the elastic ring. This enhances the sealing strength between the second butterfly plate and the elastic ring, reduces the probability of the first and second butterfly plates deflecting due to liquid pushing, and thus enhances the self-locking strength of the first and second butterfly plates. 2. By rotating the baffle to no longer block all the second holes, when liquid needs to flow in the valve body, the liquid flows through the second holes, the annular gap between the second butterfly plate and the elastic ring, and the liquid pressure is evenly relieved. This reduces the probability of uneven force on the first and second butterfly plates or even damage caused by uneven gap distribution when the first and second butterfly plates are opened. In addition, the second butterfly plate does not come into contact with the elastic ring during the rotation and opening process, reducing the friction on the second butterfly plate and reducing the probability of damage to the second butterfly plate during use, thus ensuring the normal use of the valve. 3. By setting guide blocks, the force on both sides of the rotating shaft is made uniform. The first and second butterfly plates no longer block the valve body. When the liquid flows in the valve body, the liquid pressure on one side of the guide block on the rotating shaft and the first butterfly plate is the same, which reduces the probability of deformation of the rotating shaft during long-term use. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional sectional view of the valve body of the present invention; Figure 3 This is a three-dimensional structural diagram of the first and second butterfly plates of the present invention; Figure 4 This is a three-dimensional structural cross-sectional view of the first and second butterfly plates of the present invention; Figure 5 This is a three-dimensional structural cross-sectional view of the first flexible ring, the second flexible ring, and the third flexible ring of the present invention; Figure 6 This is an exploded view of the three-dimensional structure of the first and second butterfly plates of the present invention; Figure 7 This is a three-dimensional structural diagram of the limiting block and limiting groove of the present invention.
[0016] The above-mentioned figures include the following reference numerals: 1. Valve body, 2. Hydraulic control module, 3. Rotary shaft, 4. First butterfly plate, 401. First hole, 5. Second butterfly plate, 501. Baffle, 6. Valve seat, 7. Elastic ring, 8. First flexible ring, 9. Second flexible ring, 10. Third flexible ring, 11. Connecting ring, 1101. Limiting block, 12. Limiting groove, 13. Second hole, 14. Buffer block, 15. Guide block. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Example 1
[0018] This embodiment discloses an intelligent safety shut-off valve used to reduce local stress when the butterfly plate is opened.
[0019] like Figures 1-6 As shown, the valve body 1 includes a hydraulic control module 2 mounted on the valve body 1. A control terminal (not shown in the figure) is located outside the valve body 1. The hydraulic control module 2 is electrically connected to the control terminal. A rotating shaft 3 is rotatably connected within the valve body 1. The hydraulic control module 2 controls the rotation of the rotating shaft 3. After the control terminal opens the hydraulic control module 2, the module outputs pressurized oil through a hydraulic system (such as an accumulator or oil pump) to provide power for the rotation of the rotating shaft 3 (i.e., the opening and closing of the butterfly valve). The pressure of the oil causes the rotating shaft 3 to self-lock, ensuring stability after opening and closing. The rotating shaft 3 is equipped with a first butterfly plate 4. In this embodiment, the rotating shaft 3 is fixedly connected to the first butterfly plate 4. The first butterfly plate 4 is slidably connected to a second butterfly plate 5. The first butterfly plate 4 and the second butterfly plate 5 are... Each butterfly plate 5 is assembled from multiple parts for easy installation. Several circumferentially distributed elastic elements, which are compression springs, are fixed between the first butterfly plate 4 and the second butterfly plate 5. The first butterfly plate 4 is provided with several circumferentially distributed first holes 401, the diameter of which gradually increases from left to right. The second butterfly plate 5 is provided with a baffle 501. In this embodiment, the second butterfly plate 5 is fixed to the baffle 501. A valve seat 6 is fixed inside the valve body 1. An elastic ring 7 that fits against the second butterfly plate 5 is fixed to the valve seat 6. The liquid flows from left to right. When the liquid flows through the first hole 401 and squeezes the baffle 501, the baffle 501 drives the second butterfly plate 5 to move to the right. The second butterfly plate 5 and the elastic ring 7 are sealed together, and the elastic element between the first butterfly plate 4 and the second butterfly plate 5 is in a compressed state.
[0020] The operation of the hydraulic self-locking circulation valve in this embodiment is as follows: In the initial state, when the liquid flows from left to right and valve body 1 is blocked: The first butterfly plate 4 and the second butterfly plate 5 seal the valve body 1. The elastic element between the first butterfly plate 4 and the second butterfly plate 5 is in a compressed state. The second butterfly plate 5 is sealed and fitted with the elastic ring 7. The greater the liquid pressure on the left side, the greater the force of the liquid squeezing the baffle 501 through the first hole 401, the greater the squeezing force of the baffle 501 on the second butterfly plate 5, the greater the squeezing force of the second butterfly plate 5 on the elastic ring 7, and the greater the deformation of the elastic ring 7. This enhances the sealing strength between the second butterfly plate 5 and the elastic ring 7, reduces the probability of the first butterfly plate 4 and the second butterfly plate 5 deflecting due to liquid pushing, and thus enhances the self-locking strength of the first butterfly plate 4 and the second butterfly plate 5.
[0021] During use: When the operator needs to open the first butterfly plate 4 and the second butterfly plate 5 to allow liquid to flow in the valve body 1, the operator activates the hydraulic control module 2 through the control terminal. The hydraulic control module 2 controls the rotating shaft 3 to rotate 90°, which in turn drives the first butterfly plate 4 to rotate 90°. The first butterfly plate 4 then drives the second butterfly plate 5 to rotate 90°, causing the left side of the first butterfly plate 4 to face forward and the right side of the second butterfly plate 5 to face backward. At this time, the operator closes the hydraulic control module 2 through the control terminal. After the first butterfly plate 4 and the second butterfly plate 5 have rotated 90°, the liquid flows from left to right through the front and rear sides of the rotated first butterfly plate 4 and the rotated second butterfly plate 5. The liquid pressure entering the first hole 401 decreases, the degree of compression of the elastic element between the first butterfly plate 4 and the second butterfly plate 5 decreases, and the second butterfly plate 5 moves closer to the first butterfly plate 4.
[0022] When it is necessary to close the first butterfly plate 4 and the second butterfly plate 5, the operator turns on the hydraulic control module 2 through the control terminal. The hydraulic control module 2 drives the first butterfly plate 4 to rotate and reset through the rotating shaft 3. The first butterfly plate 4 drives the second butterfly plate 5 to rotate and reset. After the first butterfly plate 4 and the second butterfly plate 5 have rotated and reset, the operator turns off the hydraulic control module 2. At this time, the liquid once again presses the baffle 501 through the first hole 401, causing the baffle 501 to drive the second butterfly plate 5 to move to the right. The second butterfly plate 5 then presses the elastic ring 7 again. Example 2
[0023] This embodiment discloses an intelligent control safety shut-off valve, which is a further improvement on the embodiment 1.
[0024] like Figure 4 and Figure 5As shown, the second butterfly plate 5 is fixedly connected to the first flexible ring 8, and the first butterfly plate 4 is fixedly connected to the second flexible ring 9. The first flexible ring 8 and the second flexible ring 9 are in contact and pressed against each other. When the second butterfly plate 5 moves to the right, it drives the first flexible ring 8 to move to the right and presses the second flexible ring 9 (the figure shows the first flexible ring 8 and the second flexible ring 9 in a compressed state), causing both the first flexible ring 8 and the second flexible ring 9 to compress and deform, sealing the connection between the second butterfly plate 5 and the first butterfly plate 4. When the second butterfly plate 5 moves to the left, the deformation of the first flexible ring 8 and the second flexible ring 9 decreases, and the first butterfly plate 4 is fixedly connected to the third flexible ring 10. The third flexible ring 10 shown in the figure is in a compressed state. Furthermore, the third flexible ring 10 can continue to be compressed. When the second butterfly plate 5 moves to the right, the second butterfly plate 5 squeezes the third flexible ring 10, causing the third flexible ring 10 to continue to deform. The left side of the third flexible ring 10 is squeezed to the right, and the third flexible ring 10 is pressed tightly against the connection between the second butterfly plate 5 and the first butterfly plate 4, sealing the connection between the second butterfly plate 5 and the first butterfly plate 4. The greater the liquid pressure on the left side, the stronger the sealing effect of the first flexible ring 8, the second flexible ring 9, and the third flexible ring 10 on the connection between the second butterfly plate 5 and the first butterfly plate 4. The thickness of the first flexible ring 8 gradually decreases from left to right, while the thickness of the second flexible ring 9 and the third flexible ring 10 both gradually increase from left to right. Example 3
[0025] In this embodiment, the rotating shaft 3 and the first butterfly plate 4 are rotatably connected (e.g., connected via a bearing or clutch, allowing the rotating shaft 3 to rotate relative to the first butterfly plate 4), and the baffle 501 and the second butterfly plate 5 are splined connected (the baffle 501 can rotate relative to the second butterfly plate 5 and move axially together with the second butterfly plate 5); whereas in embodiments 1 and 2, the rotating shaft 3 and the first butterfly plate 4 are fixedly connected, and the baffle 501 and the second butterfly plate 5 are fixedly connected. Due to the change in the above connection relationship, this embodiment opens and closes the second hole 13 by rotating the baffle 501 to achieve the pressure relief function. The specific structure is as follows: like Figure 4 and Figure 7As shown, a connecting ring 11, which rotates within the first butterfly plate 4, is fixedly connected to the rotating shaft 3. A limiting block 1101 is fixedly connected to the connecting ring 11. In the above embodiment, the rotating shaft 3 is fixedly connected to the first butterfly plate 4, and the second butterfly plate 5 is fixedly connected to the baffle 501. In this embodiment, the rotating shaft 3 and the first butterfly plate 4 are rotatably connected, and the second butterfly plate 5 is rotatably connected to the baffle 501. A limiting groove 12 is provided within the first butterfly plate 4, and the limiting block 1101 slides within the limiting groove 12. The limiting block 1101 is used to drive the first butterfly plate 4 to rotate. A first bevel gear is fixedly connected to the connecting ring 11. A second bevel gear meshing with the first bevel gear is rotatably connected to the first butterfly plate 4. This second bevel gear is splinedly connected to the baffle 501, i.e., the second bevel gear... The sliding of the second butterfly plate 5 relative to the first butterfly plate 4 is not affected. The second butterfly plate 5 is provided with second holes 13 distributed circumferentially and in the same number as the first holes 401. The axis of the second holes 13 is collinear with the axis of the adjacent first holes 401. The baffle 501 is used to block all the second holes 13. The limiting block 1101 and the limiting groove 12 are both rings with notches. The curvature of the limiting groove 12 is greater than that of the limiting block 1101. During the process of the limiting block 1101 moving from contact with the rear end of the limiting groove 12 to contact with the front end of the limiting groove 12, the limiting block 1101 drives the baffle 501 through the bevel gear set, so that the baffle 501 rotates until it no longer blocks all the second holes 13.
[0026] The maximum diameter of the first hole 401 is smaller than the diameter of the second hole 13. When the baffle 501 rotates to the point where it no longer blocks all the second holes 13, the liquid flows into the second holes 13 through the first hole 401, so that the baffle 501 is no longer pushed by the liquid pressure and the baffle 501 no longer squeezes the second butterfly plate 5.
[0027] The contact surface between the second butterfly plate 5 and the elastic ring 7 is arc-shaped. After the second butterfly plate 5 moves to the left, a gap quickly appears between the second butterfly plate 5 and the elastic ring 7.
[0028] The baffle 501 is connected to the second butterfly plate 5 via a rectangular spline (or an involute spline). Specifically, a spline groove is provided on the inner wall of the central hole of the second butterfly plate 5, and corresponding spline teeth are provided on the outer periphery of the baffle 501. The spline teeth and the spline groove cooperate to allow the baffle 501 to rotate relative to the second butterfly plate 5 (driven by the second bevel gear) and slide axially together with the second butterfly plate 5.
[0029] O-rings are provided at both ends of the spline groove to seal the gap between the first butterfly plate 4 and the second butterfly plate 5, preventing liquid leakage through the spline joint. The spline joint length is set to L (e.g., 20mm). During the entire axial movement of the second butterfly plate 5 (e.g., a movement distance of 10mm), the spline teeth remain within the spline groove to maintain torque transmission capability. When the baffle 501 needs to rotate, the second butterfly plate 5 is held in a stationary position by an elastic element or limiting structure, and the baffle 501 rotates relative to the second butterfly plate 5. When the baffle 501 needs to move axially, the baffle 501 and the second butterfly plate 5 move synchronously through the spline.
[0030] The operation of the hydraulic self-locking circulation valve in this embodiment is as follows: When it is necessary to open the first butterfly plate 4 and the second butterfly plate 5 to allow liquid to flow in the valve body 1, the operator activates the hydraulic control module 2 through the control terminal. The hydraulic control module 2 controls the rotating shaft 3 to rotate. The rotating shaft 3 drives the limit block 1101 to rotate through the connecting ring 11. The limit block 1101 moves in the limit groove 12. The limit block 1101 drives the baffle 501 through the connecting ring 11, the first bevel gear and the second bevel gear. When the limit block 1101 moves to the front limit position in the limit groove 12, the baffle 501 rotates until it no longer blocks all the second holes 13.
[0031] When the baffle 501 rotates to the point where it no longer blocks all the second holes 13, the liquid flows to the right through the first hole 401 and the second hole 13, reducing the liquid pressure on the left side of the first butterfly plate 4. At this time, the liquid no longer squeezes the baffle 501, and the baffle 501 no longer pushes the second butterfly plate 5 to the right. The elastic element between the first butterfly plate 4 and the second butterfly plate 5 is no longer compressed, causing the second butterfly plate 5 to move to the left. The second butterfly plate 5 no longer fits against the elastic ring 7, and a ring-shaped gap quickly appears between the second butterfly plate 5 and the elastic ring 7. The liquid on the left side of the first butterfly plate 4 flows to the right through the gap between the second butterfly plate 5 and the elastic ring 7.
[0032] When the limiting block 1101 moves to its front limit position within the limiting groove 12, the liquid flows to the right through the second hole 13 and the annular gap between the second butterfly plate 5 and the elastic ring 7, uniformly relieving the liquid pressure on the left side of the first butterfly plate 4. This reduces the probability of damage caused by uneven force distribution during the opening of the first butterfly plate 4 and the second butterfly plate 5 (taking the perspective in the figure as an example, when the existing butterfly plate opens, gaps first appear on the front and rear sides of the middle of the butterfly plate, and the gaps spread from the middle upwards and downwards, which leads to uneven force distribution during the opening process, even...). This causes the butterfly plate to deform, and prevents the second butterfly plate 5 from contacting the elastic ring 7 during rotation. The elastic ring 7 is no longer compressed and deformed, reducing the friction force on the second butterfly plate 5 and lowering the probability of damage to the second butterfly plate 5 during use, thus ensuring the normal use of the valve. At this time, the rotating shaft 3 continues to rotate and drives the first butterfly plate 4 to rotate 90° through the limit block 1101 and the limit groove 12. The first butterfly plate 4 drives the second butterfly plate 5 to rotate 90°. At this time, the hydraulic control module 2 is closed through the control terminal, allowing the liquid in the valve body 1 to flow.
[0033] When it is necessary to close the first butterfly plate 4 and the second butterfly plate 5, the operator turns on the hydraulic control module 2 through the control terminal. The hydraulic control module 2 drives the rotating shaft 3 to reverse and reset. The hydraulic control module 2 drives the limit block 1101 to rotate through the rotating shaft 3 and the connecting ring 11. The limit block 1101 moves and resets along the limit groove 12. During the reset process, the limit block 1101 drives the baffle 501 to rotate and reset through the first bevel gear and the second bevel gear. During the rotation and reset process, the baffle 501 gradually seals all the second holes 13.
[0034] After all the second holes 13 are blocked, the limiting block 1101 rotates to the rear limit position in the limiting groove 12, the rotating shaft 3 continues to rotate and drives the connecting ring 11 to rotate. The connecting ring 11 drives the first butterfly plate 4 to reverse and reset through the limiting block 1101 and the limiting groove 12. The first butterfly plate 4 drives the second butterfly plate 5 to reverse and reset.
[0035] During the reversal and reset of the second butterfly plate 5, the liquid flows through the first hole 401 and the second hole 13. The pressure exerted by the liquid on the baffle 501 gradually increases, and the liquid pushes the baffle 501 to move to the right. The baffle 501 pushes the second butterfly plate 5 to move to the right, so that the elastic elements of the first butterfly plate 4 and the second butterfly plate 5 are gradually compressed and reset until the limit block 1101 moves and resets. After the baffle 501 completely blocks all the second holes 13, the second butterfly plate 5 presses the elastic ring 7, causing the elastic ring 7 to deform. The operator then shuts off the hydraulic control module 2 through the control terminal. Example 4
[0036] This embodiment discloses an intelligent control safety shut-off valve, which is a further improvement on embodiment 3.
[0037] like Figure 3and Figure 4 As shown, two buffer blocks 14 are symmetrically distributed vertically on the rotating shaft 3. The buffer blocks 14 are made of elastic material. A guide block 15 is fixed to the buffer block 14. The guide block 15 is used to guide the liquid. The two guide blocks 15 are located at the two connection points of the rotating shaft 3. Guide slopes are provided on both the front and rear sides of the guide block 15 to guide the liquid and reduce the impact of the liquid on the rotating shaft 3. When the first butterfly plate 4 and the second butterfly plate 5 block the valve body 1 and the liquid is initially injected into the valve body 1, the liquid suddenly impacts the rotating shaft 3. When the liquid impacts the two connection points of the rotating shaft 3 from left to right, the liquid impacts the guide block 15. The guide block 15 squeezes the buffer block 14, causing the buffer block 14 to deform. The guide block 15 moves to the right to buffer the impact force of the liquid and guide the liquid at the connection point of the rotating shaft 3 to the front and rear sides, reducing the probability of the rotating shaft 3 deforming due to the impact.
[0038] With a vertical plane parallel to the axis of valve body 1 as a reference, the sum of the projected areas of the symmetrically distributed guide blocks 15 on this vertical plane is A, and the sum of the projected areas of the first butterfly plate 4 and the second butterfly plate 5 on this vertical plane is B, A = B. When the first butterfly plate 4 and the second butterfly plate 5 no longer block the valve body 1, and the liquid flows in the valve body 1, the sum of the hydraulic pressures on the symmetrically distributed guide blocks 15 is close to the sum of the hydraulic pressures on the first butterfly plate 4 and the second butterfly plate 5, reducing the pressure difference between one side of the guide block 15 on the rotating shaft 3 and one side of the first butterfly plate 4, and reducing the probability of deformation of the rotating shaft 3 during long-term use.
[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A smart control safety shut-off valve, comprising a hydraulic control module (2) disposed on a valve body (1), and a rotating shaft (3) rotatably connected in a sealed manner within the valve body (1), wherein the hydraulic control module (2) is used to control the rotation of the rotating shaft (3), characterized in that, The rotating shaft (3) is provided with a first butterfly plate (4), and the first butterfly plate (4) is slidably connected to a second butterfly plate (5). A plurality of elastic elements distributed circumferentially are fixed between the first butterfly plate (4) and the second butterfly plate (5). The first butterfly plate (4) is provided with a plurality of first holes (401) distributed in a circumferential direction, and the second butterfly plate (5) is provided with a baffle (501). A valve seat (6) is fixedly connected inside the valve body (1), and an elastic ring (7) that fits against the second butterfly plate (5) is fixedly connected to the valve seat (6).
2. The intelligent control safety shut-off valve according to claim 1, characterized in that, The diameter of the first hole (401) gradually increases from one end away from the baffle (501) to the other end.
3. The intelligent control safety shut-off valve according to claim 1, characterized in that, The second butterfly plate (5) is fixedly connected to a first flexible ring (8), and the first butterfly plate (4) is fixedly connected to a second flexible ring (9). The first flexible ring (8) and the second flexible ring (9) are attached to each other and squeezed together to seal the connection between the second butterfly plate (5) and the first butterfly plate (4). The first butterfly plate (4) is fixedly connected to a third flexible ring (10), and the second butterfly plate (5) is used to squeeze the third flexible ring (10).
4. The intelligent control safety shut-off valve according to claim 3, characterized in that, The thickness of the first flexible ring (8) gradually decreases from one side near the rotating shaft (3) to the other side, and the thickness of the second flexible ring (9) and the thickness of the third flexible ring (10) gradually increase from one side near the rotating shaft (3) to the other side.
5. The intelligent control safety shut-off valve according to claim 4, characterized in that, The rotating shaft (3) is fixedly connected to a connecting ring (11) that rotates within the first butterfly plate (4). The connecting ring (11) is fixedly connected to a limiting block (1101). The rotating shaft (3) is rotatably connected to the first butterfly plate (4), and the second butterfly plate (5) is rotatably connected to the baffle (501). A limiting groove (12) is provided within the first butterfly plate (4), and the limiting block (1101) slides within the limiting groove (12). The limiting block (1101) is used to drive the first butterfly plate (4) to rotate. The connecting ring (11) is fixedly connected to a first bevel gear, and the first butterfly plate (4) is rotatably connected to a second bevel gear that meshes with the first bevel gear. The second bevel gear is splinedly connected to the baffle (501). The second butterfly plate (5) is provided with second holes (13) distributed circumferentially and in the same number as the first holes (401). The axis of the second holes (13) is collinear with the axis of the adjacent first holes (401). The baffle (501) is used to block all the second holes (13).
6. The intelligent control safety shut-off valve according to claim 5, characterized in that, The maximum diameter of the first hole (401) is smaller than the diameter of the second hole (13).
7. The intelligent control safety shut-off valve according to claim 5, characterized in that, The contact surface between the second butterfly plate (5) and the elastic ring (7) is arc-shaped.
8. The intelligent control safety shut-off valve according to claim 1, characterized in that, The rotating shaft (3) is fixed with buffer blocks (14) symmetrically distributed on the upper and lower sides. The buffer blocks (14) are fixed with flow guide blocks (15), which are used to guide the liquid.
9. The intelligent control safety shut-off valve according to claim 8, characterized in that, With a vertical plane parallel to the axis of the valve body (1) as a reference, the sum of the projected areas of the guide blocks (15) symmetrically distributed on the vertical plane is A, and the sum of the projected areas of the first butterfly plate (4) and the second butterfly plate (5) on the vertical plane is B, A = B.
10. The intelligent control safety shut-off valve according to claim 8, characterized in that, The buffer block (14) is made of elastic material.