Anti-falling butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, in particular to an anti-falling butterfly valve. An anti-disengaging butterfly valve comprises a valve body, a valve clack, a valve rod, a hand wheel, a rotary knob, a movable frame, a clamping rod and the like, the valve clack is rotationally connected into the valve body, the valve rod penetrating out of the valve body is fixedly connected to the valve clack, the hand wheel is fixedly connected to the top of the valve rod, a threaded groove is formed in the upper portion of the valve rod, and the valve rod is in threaded connection with the rotary knob through the threaded groove. And a movable frame is rotationally connected to the rotary knob, clamping rods are rotationally connected to the two sides of the middle of the valve rod, sliding grooves are formed in the two clamping rods, and push rods are fixedly arranged on the two sides of the movable frame. By rotating the knob, the movable frame moves downwards to extrude and clamp the clamping rod into the fluted disc groove, so that the opening degree of the valve clack is accurately adjusted and locked, maloperation is prevented, the precision and the stability of flow control are improved, flow change caused by accidental touch is avoided, the reliability and the operation convenience of a system are improved, and the service life of the system is prolonged. The method is especially suitable for working conditions requiring accurate flow control.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, and in particular to an anti-detachment butterfly valve. Background Technology

[0002] Butterfly valves are a type of valve widely used in various fluid control systems, primarily for opening, closing, and regulating fluid flow. Their main structure includes a disc-shaped valve plate (butterfly plate), and the opening of the fluid passage is controlled by the rotation of the valve stem. One of the characteristics of butterfly valves is their compact and lightweight design, which makes them easier to install and maintain. Butterfly valves are typically made of metal (such as stainless steel or cast iron) or plastic and are suitable for a variety of media, including water, air, steam, and corrosive liquids. Depending on the application, butterfly valves can be divided into soft-seal butterfly valves and hard-seal butterfly valves. Soft-seal butterfly valves use elastic materials as seals, providing excellent sealing performance, but have a limited applicable temperature range; hard-seal butterfly valves use metal or other high-temperature resistant materials as sealing surfaces, making them suitable for high-temperature and high-pressure environments. Butterfly valves are widely used in water supply systems, sewage treatment, chemical, petroleum, natural gas, and food processing industries. Their advantages include low flow resistance, rapid switching, high cost-effectiveness, and high reliability. Furthermore, butterfly valves can be equipped with electric or pneumatic actuators to achieve remote control and automated operation, further improving ease of use and efficiency.

[0003] If existing butterfly valves use elastic elements to adjust the opening and closing of the valve disc, even a slight accidental contact with the locking element may cause it to be compressed, leading to its detachment. This results in the valve disc being adjusted arbitrarily. Because the locking element is prone to detachment, the valve disc may move on its own under the action of fluid pressure, failing to maintain the set opening degree and affecting the accuracy of flow control.

[0004] Therefore, it is necessary to design an anti-detachment butterfly valve to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of existing butterfly valves that use elastic elements to adjust the opening and closing of the valve disc, the valve disc can be detached if the elastic element is accidentally touched, resulting in arbitrary adjustment and failure to maintain the set opening degree, thus affecting the accuracy of flow control, the technical problem of this utility model is to provide an anti-detachment butterfly valve.

[0006] An anti-detachment butterfly valve includes a valve body, a valve disc, a valve stem, and a handwheel. The valve disc is rotatably connected inside the valve body, and a valve stem extending out of the valve body is fixedly connected to the valve disc. A handwheel is fixedly connected to the top of the valve stem. The valve valve also includes a knob, a movable bracket, locking rods, and a gear plate. The upper part of the valve stem has a threaded groove, and the knob is threadedly connected to the valve stem through the threaded groove. The movable bracket is rotatably connected to the knob. Locking rods are rotatably connected to both sides of the middle part of the valve stem. Each locking rod has a sliding groove. Push rods are fixedly provided on both sides of the movable bracket, and the two push rods slide in their corresponding sliding grooves. A gear plate is fixedly connected to the top of the valve body, and the gear plate has multiple grooves that engage with the two locking rods.

[0007] To further clarify, both the caliper and the gear disc are made of wear-resistant materials.

[0008] To further explain, it also includes a protective cover, an adjusting plate, and a scale rod. The protective cover is fixedly connected to the upper part of the valve body, and the adjusting plate is fixedly connected to the protective cover. The adjusting plate has multiple scale grooves arranged in a circular array, and the scale rod is fixedly connected to the upper part of the valve stem.

[0009] To further clarify, both the lever and the gear disc are located inside the protective cover.

[0010] To further explain, each scale groove corresponds one-to-one with each groove.

[0011] To further explain, it also includes a humidity sensor, a controller, a button, and a warning light. Humidity sensors are fixedly connected to both sides inside the valve body, and a controller is fixedly connected to the upper part of the valve body. The humidity sensor is electrically connected to the controller. A button is provided on the front of the controller, and a warning light is fixedly connected to the upper right part of the valve body. The warning light is electrically connected to the controller.

[0012] The beneficial effects of this utility model are as follows: 1. By rotating the knob, the movable frame moves downward and squeezes the locking rod into the groove of the toothed disc, which realizes the precise adjustment and locking of the valve opening, prevents accidental operation, improves the accuracy and stability of flow control, avoids flow changes caused by accidental contact, and enhances the reliability and ease of operation of the system. It is especially suitable for working conditions that require precise flow control.

[0013] 2. In this utility model, when the valve stem is rotated, the scale rod rotates accordingly and points to the scale groove. Each scale groove corresponds to a specific opening and closing position of the valve disc, ensuring that the user can accurately read the opening and closing size of the valve disc and the flow rate in the valve body. This simplifies the flow adjustment process, provides intuitive readings, improves the accuracy and stability of flow control, ensures reliable system operation, and enhances ease of operation.

[0014] 3. This utility model improves the safety and reliability of the system by using a humidity sensor to detect changes in humidity when liquid leaks from the valve body and transmitting the signal to the controller, which then activates a warning light to alert staff to take action. It provides an intuitive leak detection and alarm mechanism, ensuring that leaks can be detected and dealt with in a timely manner, and enhancing the system's maintenance efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the valve body, valve disc, and valve stem components of this utility model.

[0017] Figure 3 This is a schematic diagram of the covering structure of the protective cover, adjusting plate, and marker rod of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the controller, buttons, and warning lights of this utility model.

[0019] The markings in the attached diagram are as follows: 1: Valve body, 2: Valve disc, 3: Valve stem, 4: Handwheel, 5: Threaded groove, 6: Knob, 7: Moving frame, 8: Locking rod, 9: Slide groove, 10: Gear plate, 11: Protective cover, 12: Adjusting plate, 13: Marker, 14: Humidity sensor, 15: Controller, 16: Button, 17: Warning light. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "setting," "installing," "connecting," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0021] Example: An anti-detachment butterfly valve, such as Figures 1-4As shown, the valve includes a valve body 1, a valve disc 2, a valve stem 3, a handwheel 4, a knob 6, a moving frame 7, locking rods 8, and a gear disc 10. The valve disc 2 is rotatably connected to the center of the valve body 1. The valve stem 3, extending out of the valve body 1, is welded to the top of the valve disc 2. The handwheel 4 is welded to the top of the valve stem 3. A threaded groove 5 is formed on the upper part of the valve stem 3, through which the knob 6 is threadedly connected. The moving frame 7 is rotatably connected to the lower part of the knob 6. Locking rods 8 are rotatably connected to both the front and rear sides of the middle of the valve stem 3. The locking rods 8 are made of wear-resistant material, and each locking rod 8 has a sliding groove 9 in its middle. Push rods are welded to both the front and rear sides of the moving frame 7, and both push rods slide within their corresponding sliding grooves 9. A gear disc 10, also made of wear-resistant material, is welded to the top of the valve body 1. The gear disc 10 has a groove... Multiple grooves engage with two locking rods 8. Rotating the handwheel 4 causes the valve stem 3 to rotate, thus rotating the valve disc 2 and adjusting the flow rate within the valve body 1. Once the appropriate flow rate is achieved, rotating the knob 6 clockwise moves the moving frame 7 downwards. The push rod moves along the slide groove 9 and pushes the front locking rod 8 to rotate counterclockwise and the rear locking rod 8 to rotate clockwise, causing them to engage in the corresponding grooves of the gear disc 10, thereby locking the valve stem 3 and preventing it from continuing to rotate. If the flow rate within the valve body 1 needs to be adjusted again, rotating the knob 6 counterclockwise moves the moving frame 7 upwards. The push rod moves along the slide groove 9 and pushes the front locking rod 8 to rotate clockwise and the rear locking rod 8 to rotate counterclockwise, causing them to disengage from the corresponding grooves of the gear disc 10. At this point, the handwheel 4 can be rotated to rotate the valve stem 3, thereby adjusting the flow rate through the valve disc 2.

[0022] like Figure 1 and Figure 3 As shown, it also includes a protective cover 11, an adjusting plate 12, and a scale rod 13. The protective cover 11 is welded to the upper part of the valve body 1. The locking rod 8 and the gear plate 10 are both located inside the protective cover 11. The adjusting plate 12 is connected to the top of the protective cover 11 by screws. The top of the adjusting plate 12 has multiple scale slots arranged in a ring array, each scale slot corresponding to each groove. The scale rod 13, located between the knob 6 and the handwheel 4, is welded to the upper part of the valve stem 3. Rotating the handwheel 4 causes the valve stem 3 to rotate, which in turn causes the valve disc 2 to rotate, thereby adjusting the flow rate in the valve body 1. As the valve stem 3 rotates, the scale rod 13 also rotates and points to different scale slots on the adjusting plate 12. Each scale slot corresponds to a specific opening angle of the valve disc 2. The user can accurately read the opening and closing size of the valve disc 2 through the scale slot pointed to by the scale rod 13, thereby knowing the flow rate in the valve body 1.

[0023] like Figure 1 and Figure 4As shown, the system also includes a humidity sensor 14, a controller 15, a button 16, and a warning light 17. Humidity sensors 14 are installed on both the front and rear sides of the valve body 1 using screws. The controller 15 is installed on the upper right side of the valve body 1 using screws. The humidity sensor 14 and controller 15 are electrically connected. A button 16 is located on the front side of the controller 15. A warning light 17 is installed on the upper right side of the valve body 1 using screws. The warning light 17 is electrically connected to the controller 15. The humidity sensor 14 detects humidity changes at the connection point between the pipe and the valve body 1 and transmits the signal to the controller 15. Upon receiving the signal from the humidity sensor 14, the controller 15 immediately activates the warning light 17 to alert personnel to any leaks. Personnel locate and address the leak point according to the warning light 17, ensuring the leak is resolved. After addressing the leak, personnel can press the reset button 16 to notify the controller 15 to check the status of the humidity sensor 14. If the humidity returns to normal, the controller 15 will turn off the warning light 17, and the system will return to normal operation.

[0024] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. An anti-detachment butterfly valve, comprising a valve body (1), a valve disc (2), a valve stem (3), and a handwheel (4), wherein the valve disc (2) is rotatably connected inside the valve body (1), and the valve stem (3) extending through the valve body (1) is fixedly connected to the valve disc (2), and the handwheel (4) is fixedly connected to the top of the valve stem (3), characterized in that: It also includes a knob (6), a movable frame (7), a locking rod (8) and a gear plate (10). The upper part of the valve stem (3) is provided with a threaded groove (5). The valve stem (3) is threadedly connected to the knob (6) through the threaded groove (5). The movable frame (7) is rotatably connected to the knob (6). The locking rod (8) is rotatably connected to both sides of the middle part of the valve stem (3). The two locking rods (8) are provided with a sliding groove (9). Push rods are fixed on both sides of the movable frame (7). The two push rods slide in the corresponding sliding grooves (9). The top of the valve body (1) is fixedly connected to a gear plate (10). The gear plate (10) is provided with multiple grooves that engage with the two locking rods (8).

2. The anti-detachment butterfly valve according to claim 1, characterized in that: Both the lever (8) and the gear plate (10) are made of wear-resistant material.

3. The anti-detachment butterfly valve according to claim 2, characterized in that: It also includes a protective cover (11), an adjusting plate (12) and a scale rod (13). The upper part of the valve body (1) is fixedly connected to the protective cover (11), and the adjusting plate (12) is fixedly connected to the protective cover (11). Multiple scale grooves are opened in a ring array on the adjusting plate (12), and the upper part of the valve stem (3) is fixedly connected to the scale rod (13).

4. The anti-detachment butterfly valve according to claim 3, characterized in that: Both the lever (8) and the gear plate (10) are located inside the protective cover (11).

5. The anti-detachment butterfly valve according to claim 4, characterized in that: Each scale groove corresponds one-to-one with each groove.

6. The anti-detachment butterfly valve according to claim 5, characterized in that: It also includes a humidity sensor (14), a controller (15), a button (16) and a warning light (17). The humidity sensor (14) is fixedly connected to both sides inside the valve body (1). The controller (15) is fixedly connected to the upper part of the valve body (1). The humidity sensor (14) is electrically connected to the controller (15). The button (16) is provided at the front of the controller (15). The warning light (17) is fixedly connected to the upper right part of the valve body (1). The warning light (17) is electrically connected to the controller (15).

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