Automatic alarm type valve with automatic water volume monitoring function

By designing an automatic alarm valve with flow sensor and water quality detector, the problem of real-time monitoring of water flow in the existing technology is solved, real-time monitoring and alarm of water flow and water quality is achieved, and the accuracy of the valve is ensured. Control and water quality safety.

CN119393528APending Publication Date: 2025-02-07JIANGSU BOTWAY FLUID TECH CO LTD

Patent Information

Application Number
CN202411610123.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2025-02-07

AI Technical Summary

Technical Problem

The prior art cannot monitor water flow in real time, resulting in errors that may occur in long-term use of valves in places with high accuracy, such as industrial chemical liquid transportation.

Method used

Design an automatic alarm valve with automatic water monitoring function, adopts a valve body with a tubular structure, built-in flow sensor and water quality detector, and drives the butterfly valve spool to rotate by rotating the cylinder, combining the sealing plate and trigger mechanism to realize real-time water flow monitoring and Water quality is detected and alarms are issued through buzzers and alarm lights.

Benefits of technology

Real-time monitoring of water flow and detection of water quality are achieved, alarms are issued in a timely manner, ensuring the precise control of the valve and the safety of water quality, and avoiding errors and potential risks.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119393528A_ABST
    Figure CN119393528A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of valves, and particularly discloses an automatic alarm type valve with an automatic water volume monitoring function, which comprises a valve main body with a tubular structure, mounting flanges are fixedly mounted at the left end and the right end of the valve main body, and a storage box is fixedly mounted at the upper end of the valve main body; a butterfly valve element is rotationally installed in the middle of the interior of the valve body, a center rotating shaft used for driving the butterfly valve element to rotate is fixedly installed at the upper end of the butterfly valve element, a controller is fixedly installed at the upper end of the storage box, and a buzzer and an alarm lamp which are used for reminding workers are fixedly installed on the upper surface of the controller. According to the automatic alarm type valve with the automatic water volume monitoring function, the device is installed through the installation flange, then the rotating air cylinder drives the butterfly valve element to rotate through the center rotating shaft, the purpose of controlling the valve to be opened and closed is achieved, and in the process, the flow sensor is fixedly installed in the valve body to monitor the accurate water flow; therefore, whether valve control is accurate is judged.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to an automatic alarm valve with a water volume automatic monitoring function. Background Art

[0002] A valve is a device used to control the flow of fluids (such as liquids, gases or steam). It can adjust the direction, pressure and flow of the fluid. Valves are widely used in various industrial, construction and household systems. Among them, the butterfly valve can adjust the fluid through a disc and is suitable for large flow occasions.

[0003] In the prior art, a Chinese patent with publication number CN118602125A discloses a valve, including a valve body, a relief valve and a sealing structure. The valve body has a threaded hole connected to the valve cavity of the valve body; the relief valve includes a first connecting section arranged in the threaded hole and a second connecting section arranged outside the threaded hole; the first connecting section has an external threaded section matching the threaded hole; the sealing structure includes a first sealing member, a second sealing member and a fireproof sealing member, the first sealing member and the second sealing member are both arranged between the first connecting section and the inner wall of the threaded hole, the first sealing member is located at the front end side of the external threaded section, the second sealing member is located at the rear end side of the external threaded section, and the fireproof sealing member is arranged between the second connecting section and the outer end surface of the valve body.

[0004] As another example in the prior art, a Chinese patent with publication number CN105465470A discloses a valve, comprising: a valve body, the valve body being a body of a normally open valve or a normally closed valve; a control unit, the control unit being arranged on the valve body to control the opening and closing of the valve, and the control unit being provided with a perspective unit; a first display unit, the first display unit being mounted on the valve body and the first display unit being provided with a first identification unit; a second display unit, the second display unit being mounted in the control unit, the second display unit comprising a second identification unit and a third identification unit, and when the control unit controls the opening and closing of the valve, the perspective unit sees through the second identification unit or the third identification unit, wherein, when the perspective unit sees through the second identification unit, the valve body is in a correct opening and closing state; and when the perspective unit sees through the third identification unit, the valve body is in an incorrect opening and closing state.

[0005] As another example in the prior art, a Chinese patent with publication number CN110701315A discloses a butterfly valve and a butterfly valve device. The butterfly valve includes a valve seat, a valve core and a rotating shaft fixed to the valve core, and the valve seat includes a base and a valve body assembly floatingly assembled on the base. The valve body assembly is provided with a valve hole, and at least a portion of the inner wall surface of the valve hole is provided as an inner positive cone surface and the cross-sectional contour line perpendicular to the center line of the valve hole is circular. The rotating shaft can be rotatably assembled on the base and drive the valve core to rotate relative to the valve hole, the valve core is installed on the valve hole and the outer side wall of the valve core is provided with an outer positive cone surface matching the inner positive cone surface, and the center line of the valve core is eccentric to the rotation center line of the rotating shaft by a preset distance.

[0006] Based on the above materials, it can be seen that valves in the prior art are generally used to control liquids and gases, but in actual use, valves cannot monitor water flow in real time. In the face of some places with higher precision, such as industrial chemical liquid transportation, errors may occur when the valve is used for a long time without water flow monitoring. Summary of the invention

[0007] The object of the present invention is to provide an automatic alarm valve with a water volume automatic monitoring function to solve the problem of being unable to monitor water flow in real time in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: an automatic alarm valve with a water volume automatic monitoring function, comprising a valve body with a tubular structure, with mounting flanges fixedly mounted on both ends of the valve body, and further comprising:

[0009] A storage box is fixedly installed on the upper end of the valve body, and a butterfly valve core is rotatably installed in the middle position inside the valve body, and a central shaft for driving the butterfly valve core to rotate is fixedly installed on the upper end of the butterfly valve core;

[0010] A controller is fixedly installed on the upper end of the storage box, and a buzzer and an alarm light for reminding staff are fixedly installed on the upper surface of the controller. A water quality detector and a sealing plate are fixedly installed inside the storage box, and a trigger mechanism is provided between the sealing plate and the controller;

[0011] A flow sensor for monitoring real-time water flow is fixedly installed inside the rear end of the valve body, and a movable plate is installed outside the flow sensor, and a cleaning mechanism for cleaning the surface of the flow sensor is arranged under the movable plate;

[0012] A rotating cylinder for driving the central rotating shaft to rotate is fixedly installed above the storage box, and a manual operating handle fixedly installed with the central rotating shaft is arranged below the rotating cylinder.

[0013] Preferably, the trigger mechanism includes a lower contact fixedly mounted on the left upper surface of the sealing plate, and the sealing plate slides up and down between the storage box, and a reset spring is fixedly mounted between the lower surface of the sealing plate and the inner wall of the storage box, and the sealing plate moves up and down in coordination with the reset spring through changes in the amount of water inside the storage box.

[0014] Preferably, the positions of the lower contact and the upper contact correspond to each other, and the upper contact is fixedly installed on the lower surface of the controller, and the controller has a built-in power supply, and the controller is turned on by the contact between the lower contact and the upper contact.

[0015] Preferably, a water inlet pipe and a water outlet pipe are fixedly installed on the lower surfaces of the left and right ends of the storage box, and the water inlet pipe and the water outlet pipe are both connected to the storage box. The water in the valve body can flow through the interior of the storage box by using the water inlet pipe and the water outlet pipe.

[0016] Preferably, the water inlet pipe and the water outlet pipe are both externally installed with electric control valves for controlling their on and off, and a sampling tube connected to them is fixedly installed on the front side of the storage box, and the sampling tube is located below the sealing plate, so that the staff can conveniently take water samples using the sampling tube.

[0017] Preferably, the cleaning mechanism includes a flushing nozzle fixedly mounted on the lower surface of the movable plate, and the movable plate is configured as a hollow structure, and the movable plate and the water outlet pipe are interconnected, and the water in the water outlet pipe is sprayed out through the flushing nozzle to achieve the purpose of cleaning the surface of the flow sensor.

[0018] Preferably, a mounting rod is fixedly mounted on the side of the movable plate, and a cleaning brush is fixedly mounted on the bottom end of the mounting rod, and the cleaning brush is in contact with the outer surface of the lower end of the flow sensor.

[0019] Preferably, a first magnetic block is fixedly mounted on the upper surface of the movable plate, and the first magnetic block and the second magnetic block are magnetically attracted to each other, and the second magnetic block is fixedly mounted on the upper surface of the right end of the sealing plate, and the magnetic adsorption effect between the first magnetic block and the second magnetic block is utilized so that the sealing plate can drive the movable plate to move synchronously when it moves.

[0020] Preferably, a sealing ring is fixedly installed on the outer surface of the side of the butterfly valve core, and the sealing ring is set to be a hollow elastic rubber material, and the sealing ring is connected to the hollow central shaft.

[0021] Preferably, an airbag in communication with the central shaft is fixedly mounted on the outside thereof, and the airbag and an extrusion block fixedly mounted on the lower surface of the storage box are squeezed against each other, so that a better sealing effect is achieved through the expansion of the sealing ring.

[0022] Compared with the prior art, the present invention has the following beneficial effects: the automatic alarm valve with automatic water volume monitoring function adopts a new structural design, the specific contents of which are as follows:

[0023] 1. Install the device through the mounting flange, and then use the rotating cylinder to drive the butterfly valve core to rotate through the central shaft to achieve the purpose of controlling the valve on and off. In this process, the flow sensor fixed inside the valve body is used to monitor the precise water flow, so as to determine whether the valve control is accurate;

[0024] Furthermore, when the valve is opened, the electric control valve is opened periodically, so that the water inside the valve can enter the storage box through the water inlet pipe and then flow out through the water outlet pipe, so that the water quality is tested by the water quality detector inside the storage box. When the water quality test fails, the electric control valve of the water outlet pipe is closed, so that the water inside the storage box continues to increase, thereby pushing the sealing plate to move upward, and finally making the lower contact contact with the upper contact to open the controller, so that the buzzer and the alarm light emit sound and light alarms, reminding the staff to check the water quality;

[0025] Furthermore, the staff can take out the water inside the storage box through the sampling tube for secondary testing, making sampling more convenient.

[0026] 2. When water enters from the water inlet pipe and flows out from the water outlet pipe (the water discharged from the water outlet pipe is discharged from the flushing nozzle to achieve the purpose of flushing), the sealing plate is driven to move up and down. During the up and down movement of the sealing plate, the magnetic adsorption between the second magnetic block and the first magnetic block drives the movable plate to move up and down, so that the cleaning brush fixed under the movable plate is used to clean the surface of the flow sensor to prevent dirt from sticking and affecting the monitoring effect of the flow sensor;

[0027] Furthermore, when the butterfly valve core is closed, the airbag outside the central shaft and the extrusion block squeeze each other, so that the air in the airbag is transported to the sealing ring through the central shaft, causing the sealing ring to expand and fit better with the inner wall of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the valve body of the present invention;

[0030] Figure 3 This is a schematic diagram of the lower surface structure of the storage box of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the storage box of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the water quality detector of the present invention;

[0033] Figure 6 This is a schematic diagram of the sealing plate structure of the present invention;

[0034] Figure 7 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0035] Figure 8 This is a schematic diagram of the upper contact installation position structure of the present invention;

[0036] Fig. 9 This is a schematic diagram of the structure of the installation relationship between the movable plate and the water volume sensor of the present invention;

[0037] Fig.10 It is a schematic diagram of the sealing ring structure of the present invention.

[0038] In the figure: 1. Valve body; 2. Mounting flange; 3. Storage box; 4. Central shaft; 5. Butterfly valve core; 6. Sealing ring; 7. Rotating cylinder; 8. Manual operating handle; 9. Water quality detector; 10. Water inlet pipe; 11. Water outlet pipe; 12. Electric control valve; 13. Controller; 14. Buzzer; 15. Alarm light; 16. Sealing plate; 17. Lower contact; 18. Upper contact; 19. Reset spring; 20. Flow sensor; 21. Movable plate; 22. Flushing nozzle; 23. Mounting rod; 24. Cleaning brush; 25. First magnetic block; 26. Second magnetic block; 27. Blowing air bag; 28. Extrusion block; 29. ​​Sampling tube. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figure 1-Figure 3 In order to achieve the purpose of real-time monitoring of accurate water flow, the present embodiment provides the following technical solutions, which specifically disclose: a valve body 1 of a tubular structure, with mounting flanges 2 fixedly installed at the left and right ends of the valve body 1, a storage box 3 fixedly installed at the upper end of the valve body 1, and a butterfly valve core 5 is rotatably installed at the middle position inside the valve body 1, and a central shaft 4 for driving the butterfly valve core 5 is fixedly installed on the upper end, a rotating cylinder 7 for driving the central shaft 4 to rotate is fixedly installed above the storage box 3, and a manual operating handle 8 fixedly installed with the central shaft 4 is arranged below the rotating cylinder 7, a sealing ring 6 is fixedly installed on the outer surface of the side of the butterfly valve core 5, and the sealing ring 6 is set to be a hollow elastic rubber material, and the sealing ring 6 and the hollow central shaft 4 are connected to each other, and an air bag 27 connected to the central shaft 4 is fixedly installed on the outside of the central shaft 4, and the air bag 27 and the extrusion block 28 fixedly installed on the lower surface of the storage box 3 are squeezed against each other.

[0041] When using the device, first use the mounting flange 2 to install the valve body 1 in the liquid delivery pipeline, and then drive the central shaft 4 to rotate by rotating the cylinder 7, so that the central shaft 4 drives the butterfly valve core 5 to rotate, and controls the on and off of the valve (it can also control the opening amount of the valve to control the flow). In this process, the flow sensor 20 is used to monitor the precise water flow inside the valve and compare it with the opening amount of the valve to judge the accuracy of the valve. When the butterfly valve core 5 rotates to the closed position, the air bag 27 outside the central shaft 4 rotates to the position squeezed by the squeezing block 28. The air inside the air bag 27 is squeezed and transported to the inside of the sealing ring 6 through the hollow central shaft 4, so that the sealing ring 6 expands and better fits the inner wall of the valve body 1, thereby achieving a better sealing effect.

[0042] Example 2: Please refer to Figure 4-Figure 8 In order to achieve the purpose of detecting water quality and issuing an alarm in time, the present embodiment provides the following technical solutions, which specifically disclose: a controller 13 is fixedly installed on the upper end of the storage box 3, and a buzzer 14 and an alarm light 15 for reminding the staff are fixedly installed on the upper surface of the controller 13, a water quality detector 9 and a sealing plate 16 are fixedly installed inside the storage box 3, and a trigger mechanism is arranged between the sealing plate 16 and the controller 13, the trigger mechanism includes a lower contact 17 fixedly installed on the upper surface of the left side of the sealing plate 16, and the sealing plate 16 slides up and down with the storage box 3, and the lower surface of the sealing plate 16 is in contact with the storage box 3. A return spring 19 is fixedly installed between the inner walls of the storage box 3, the positions of the lower contact 17 and the upper contact 18 correspond to each other, and the upper contact 18 is fixedly installed on the lower surface of the controller 13, and the controller 13 has a built-in power supply. An inlet pipe 10 and an outlet pipe 11 are fixedly installed on the lower surfaces of the left and right ends of the storage box 3, and the inlet pipe 10 and the outlet pipe 11 are both connected to the storage box 3, and an electric control valve 12 for controlling the on and off of the inlet pipe 10 and the outlet pipe 11 is installed outside, and a sampling tube 29 connected to the storage box 3 is fixedly installed on the front side, and the sampling tube 29 is located below the sealing plate 16.

[0043] During the use of the device, the electric control valve 12 outside the water inlet pipe 10 and the water outlet pipe 11 is opened regularly, so that the water inside the valve body 1 enters the storage box 3 through the water inlet pipe 10, and then is discharged from the water outlet pipe 11. When the water stays in the storage box 3, the water quality is detected by the water quality detector 9 inside the storage box 3. If the water quality is detected to be unqualified, the electric control valve 12 of the water outlet pipe 11 will not be opened. At this time, the water inside the storage box 3 continues to increase, thereby pushing the sealing plate 16 to move upward. When the sealing plate 16 moves to the top, the lower contact 17 on its upper surface contacts with the upper contact 18 on the lower surface of the controller 13, thereby turning on the controller 13, and the buzzer 14 above the controller 13 emits an alarm sound, and at the same time, the alarm light 15 above the controller 13 emits light to remind the staff to check. When the staff comes, they take out the water inside the storage box 3 through the sampling tube 29 for re-testing. If the water quality is indeed unqualified, it needs to be checked step by step.

[0044] Example 3: Please refer to Figure 9-10 In order to achieve the purpose of cleaning the surface of the flow sensor 20, the present embodiment provides the following technical solutions, which specifically disclose: a flow sensor 20 for monitoring real-time water flow is fixedly installed inside the rear end of the valve body 1, and a movable plate 21 is installed outside the flow sensor 20, and a cleaning mechanism for cleaning the surface of the flow sensor 20 is arranged below the movable plate 21, the cleaning mechanism includes a flushing nozzle 22 fixedly installed on the lower surface of the movable plate 21, and the movable plate 21 is set as a hollow structure, and the movable plate 21 and the water outlet pipe 11 are connected to each other, a mounting rod 23 is fixedly installed on the side of the movable plate 21, and a cleaning brush 24 is fixedly installed at the bottom end of the mounting rod 23, and the cleaning brush 24 is in contact with the outer surface of the lower end of the flow sensor 20, a first magnetic block 25 is fixedly installed on the upper surface of the movable plate 21, and the first magnetic block 25 and the second magnetic block 26 are magnetically attracted to each other, and the second magnetic block 26 is fixedly installed on the upper surface of the right end of the sealing plate 16.

[0045] In the process of water entering the storage box 3 from the water inlet pipe 10 and then being discharged from the water outlet pipe 11, the water inside the storage box 3 is increased and decreased in cooperation with the reset spring 19 to make the sealing plate 16 move back and forth up and down. In the process of the sealing plate 16 moving up and down, the second magnetic block 26 and the first magnetic block 25 are magnetically attracted to each other to drive the movable plate 21 to move up and down synchronously. In the process of the movable plate 21 moving, the cleaning brush 24 fixedly installed thereunder is driven to move synchronously. The surface of the flow sensor 20 is cleaned by the cleaning brush 24. At the same time, the water in the water outlet pipe 11 enters the movable plate 21, and is finally sprayed out from the flushing nozzle 22 under the movable plate 21, and cooperates with the cleaning brush 24 to achieve a better cleaning effect, thereby preventing dirt from adhering to the surface of the flow sensor 20 and affecting the detection effect.

[0046] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic alarm valve with automatic water volume monitoring function, comprising a valve body (1) in a tubular structure, with mounting flanges (2) fixedly mounted on both ends of the valve body (1), characterized in that: Also includes: A storage box (3) is fixedly mounted on the upper end of the valve body (1), and a butterfly valve core (5) is rotatably mounted in the middle position of the valve body (1), and a central rotating shaft (4) for driving the butterfly valve core (5) to rotate is fixedly mounted on the upper end of the butterfly valve core (5); A controller (13) is fixedly mounted on the upper end of the storage box (3), and a buzzer (14) and an alarm light (15) for reminding staff are fixedly mounted on the upper surface of the controller (13); a water quality detector (9) and a sealing plate (16) are fixedly mounted inside the storage box (3), and a trigger mechanism is provided between the sealing plate (16) and the controller (13); A flow sensor (20) for monitoring real-time water flow is fixedly installed inside the rear end of the valve body (1), and a movable plate (21) is installed outside the flow sensor (20), and a cleaning mechanism for cleaning the surface of the flow sensor (20) is provided below the movable plate (21); A rotating cylinder (7) for driving the central rotating shaft (4) to rotate is fixedly installed above the storage box (3), and a manual operating handle (8) fixedly installed with the central rotating shaft (4) is arranged below the rotating cylinder (7).

2. The automatic alarm valve with automatic water volume monitoring function according to claim 1, characterized in that: The trigger mechanism comprises a lower contact (17) fixedly mounted on the upper surface of the left side of the sealing plate (16), and the sealing plate (16) slides up and down with respect to the storage box (3), and a return spring (19) is fixedly mounted between the lower surface of the sealing plate (16) and the inner wall of the storage box (3).

3. The automatic alarm valve with automatic water volume monitoring function according to claim 2, characterized in that: The positions of the lower contact (17) and the upper contact (18) correspond to each other vertically, and the upper contact (18) is fixedly mounted on the lower surface of the controller (13), and a power supply is built into the controller (13).

4. The automatic alarm valve with automatic water volume monitoring function according to claim 1, characterized in that: A water inlet pipe (10) and a water outlet pipe (11) are fixedly mounted on the lower surfaces of the left and right ends of the storage box (3), and the water inlet pipe (10) and the water outlet pipe (11) are both in communication with the storage box (3).

5. The automatic alarm valve with automatic water volume monitoring function according to claim 4, characterized in that: The water inlet pipe (10) and the water outlet pipe (11) are both externally installed with electric control valves (12) for controlling the on and off thereof, and a sampling tube (29) communicating therewith is fixedly installed on the front side of the storage box (3), and the sampling tube (29) is located below the sealing plate (16).

6. The automatic alarm valve with automatic water volume monitoring function according to claim 1, characterized in that: The cleaning mechanism comprises a flushing nozzle (22) fixedly mounted on the lower surface of a movable plate (21), the movable plate (21) is configured as a hollow structure, and the movable plate (21) and the water outlet pipe (11) are in communication with each other.

7. The automatic alarm valve with automatic water volume monitoring function according to claim 6, characterized in that: A mounting rod (23) is fixedly mounted on the side of the movable plate (21), and a cleaning brush (24) is fixedly mounted on the bottom end of the mounting rod (23), and the cleaning brush (24) is in contact with the outer surface of the lower end of the flow sensor (20).

8. The automatic alarm valve with automatic water volume monitoring function according to claim 7, characterized in that: A first magnetic block (25) is fixedly mounted on the upper surface of the movable plate (21), and the first magnetic block (25) and the second magnetic block (26) are magnetically attracted to each other, and the second magnetic block (26) is fixedly mounted on the upper surface of the right end of the sealing plate (16).

9. The automatic alarm valve with automatic water volume monitoring function according to claim 1, characterized in that: A sealing ring (6) is fixedly mounted on the outer surface of the side of the butterfly valve core (5), and the sealing ring (6) is made of a hollow elastic rubber material, and the sealing ring (6) is connected to the hollow central rotating shaft (4).

10. The automatic alarm valve with automatic water volume monitoring function according to claim 9, characterized in that: An airbag (27) in communication with the central rotating shaft (4) is fixedly mounted on the outside thereof, and the airbag (27) and an extrusion block (28) fixedly mounted on the lower surface of the storage box (3) are mutually extruded.

Citation Information

Patent Citations

  • Valve

    CN105465470A

  • Butterfly valve and butterfly valve device

    CN110701315A

  • Valve

    CN118602125A

Cited By

  • Plate heat exchanger capable of being intelligently adjusted and method thereof

    CN120141185A

  • An intelligent adjustable plate heat exchanger and its method

    CN120141185B