Novel butterfly valve for reducing pressure difference on two sides in opening and closing process and preventing seepage

Abstract

The utility model relates to a novel butterfly valve used for reducing the pressure difference of two sides in the opening and closing process to prevent seepage, and belongs to the technical field of valves. The device is characterized by comprising a manual butterfly valve part, an auxiliary electric ball valve part and an automatic control part, when the valve is normally and slowly closed, a controller receives signals of slowly closing the valve and a pressure sensor and sends a control signal to a motor, and the motor is started to enable the electric ball valve to be slowly closed; when the valve is rapidly and emergently closed, the controller receives signals of the rapid closing valve and the pressure sensor and sends control signals to the motor and the electric communicating vessel, the pressure difference between the two sides of the butterfly valve is rapidly reduced, and the butterfly valve can be rapidly and easily closed; after the butterfly valve is closed, the electric ball valve is also in a closed state, the stopping effect is further enhanced, and seepage is prevented. According to the novel butterfly valve for reducing the pressure difference between the two sides in the opening and closing process and preventing seepage, fluid flowing can be effectively controlled, seepage is prevented, and the valve can be easily opened or closed.

Description

Technical Field

[0001] This utility model relates to a novel butterfly valve for reducing the pressure difference between the two sides during the switching process and preventing seepage, belonging to the field of valve technology. Background Technology

[0002] In river water source heat pump air conditioning systems, the air conditioning side water system has higher pressure, while the river water side has lower pressure. In the pipeline connecting the river water side and the air conditioning water system side, the butterfly valve needs to effectively handle the high pressure of the air conditioning water system and the low pressure of the river water to prevent seepage caused by the pressure difference. Furthermore, the butterfly valve on this pipeline faces difficulties in opening or closing due to the pressure difference across the valve. Therefore, a new type of butterfly valve needs to be designed to effectively control fluid flow, prevent seepage, and allow for easy opening and closing even under conditions of large pressure difference across the valve.

[0003] Several patents have already proposed novel butterfly valves in the field of valve technology. Patent CN 103438228 B proposes a self-sealing centerline butterfly valve, the main feature of which is that it includes a valve body with a fluid channel inside, and a valve plate covered with an elastic sealing layer inside the fluid channel. The elastic sealing layer on both ends of the valve plate protrudes axially outward, thereby forming two annular lips that can fit against the inner wall of the fluid channel. However, when the pressure difference between the two sides of the valve is large, the low stiffness requirement of the valve body and valve shaft may cause deformation of the valve body or valve shaft, affecting the sealing performance. In addition, the large pressure difference between the two sides of the valve results in a large opening and closing torque, making the valve difficult to operate. Patent CN 107061761 A proposes an improved butterfly valve, the main feature of which is that each of the inner walls on both sides of the valve body is provided with a mounting groove, in which a rotatable air bladder assembly is provided. The air bladder assembly includes a metal telescopic tube and a sealing air bladder. The sealing air bladder is flexibly fitted and sealed to the outer periphery of the disc. When the disc is opened, the sealing air bladder does not come into contact with the medium in the flow channel. However, although the sealing air bladder can provide a good sealing effect, under high pressure differential, the air bladder may not be able to withstand the pressure difference between the two sides, resulting in a decrease in sealing performance or damage to the air bladder. Furthermore, under high pressure differential, the disc may be deformed or damaged, affecting the opening and closing function of the valve.

[0004] To ensure effective handling of the high pressure of the air conditioning water system and the low pressure of the river water, and to prevent seepage caused by pressure differences and difficulties in opening or closing the valve, this utility model proposes a novel butterfly valve for reducing the pressure difference between the two sides during the opening and closing process to prevent seepage. Under conditions of large pressure difference between the two sides of the valve, it can effectively control fluid flow, prevent seepage, and easily open or close the valve. Summary of the Invention

[0005] The technical problem to be solved by this utility model is that the existing butterfly valves on the pipeline connecting the river water side and the air conditioning water system side have the problem of excessive pressure difference on both sides of the valve causing seepage, and the valve is difficult to open or close due to the excessive pressure difference on both sides of the valve.

[0006] This utility model provides a novel butterfly valve for reducing the pressure difference between the two sides during the opening and closing process to prevent seepage. The valve is characterized by including a manual butterfly valve part, an auxiliary electric ball valve part, and an automatic control part.

[0007] The manual butterfly valve assembly includes a first flange 1, a first pipe 2, a butterfly valve plate 3, a second pipe 4, a second flange 5, a turntable 10, a gear 14, and a drive shaft 15. The first flange 1 is connected to the left end of the first pipe 2; the right end of the first pipe 2 is connected to the left end of the butterfly valve plate 3; the right end of the butterfly valve plate 3 is connected to the left end of the second pipe 4; the right end of the second pipe 4 is connected to the second flange 5; the turntable 10 is connected to the gear 14; the gear 14 is connected to the drive shaft 15; and the drive shaft 15 is connected to the butterfly valve plate 3.

[0008] The auxiliary electric ball valve section includes a third flange 6, a fourth flange 7, a motor 8, and an electric ball valve 9; the third flange 6 is connected to the left end of the electric ball valve 9; the right end of the electric ball valve 9 is connected to the fourth flange 7; and the motor 8 is connected to the electric ball valve 9.

[0009] The automatic control unit includes a motor 8, a first pressure sensor 11, a second pressure sensor 12, a controller 13, a gear 14, a first connecting pipe 16, an electric connector 17, and a second connecting pipe 18. The motor 8 is connected to an electric ball valve 9. The first pressure sensor 11 is connected to the second pipe 4 to detect the pressure inside the second pipe 4. The second pressure sensor 12 is connected to the first pipe 2 to detect the pressure inside the first pipe 2. The controller 13 is located to the right of the gear 14 and is used to receive signals from the first pressure sensor 11, the second pressure sensor 12, and the gear 14 to control and regulate the start and stop of the motor 8 and the electric connector 17. The upper end of the first connecting pipe 16 is connected to the first pipe 2, and the lower end is connected to the electric connector 17. The upper end of the second connecting pipe 18 is connected to the second pipe 4, and the lower end is connected to the electric connector 17.

[0010] The second flange 5 in the manual butterfly valve section is connected to the third flange 6 in the auxiliary electric ball valve section;

[0011] Furthermore, the novel butterfly valve used to reduce the pressure difference between the two sides during the switching process and prevent seepage is characterized in that: the first flange 1 and the second flange 5 in the manual butterfly valve part have four evenly arranged bolt holes for connecting the pipes.

[0012] Furthermore, the novel butterfly valve used to reduce the pressure difference between the two sides and prevent seepage during the switching process is characterized in that: the butterfly valve plate 3 in the manual butterfly valve part is a wafer-type butterfly valve.

[0013] Furthermore, the novel butterfly valve used to reduce the pressure difference between the two sides during the switching process and prevent seepage is characterized in that: the materials of the first flange 1, the first pipe 2, the butterfly valve plate 3, the second pipe 4, the second flange 5, and the drive shaft 15 in the manual butterfly valve part are all stainless steel.

[0014] Furthermore, the novel butterfly valve used to reduce the pressure difference between the two sides during the switching process and prevent seepage is characterized in that: the third flange 6 and the fourth flange 7 in the auxiliary electric ball valve part have four evenly arranged bolt holes for connecting the pipes.

[0015] Furthermore, the novel butterfly valve used to reduce the pressure difference between the two sides during the switching process and prevent seepage is characterized in that: the motor 8 in the auxiliary electric ball valve part controls the opening degree of the electric ball valve 9, and the electric ball valve 9 is a V-type ball valve.

[0016] Furthermore, the novel butterfly valve used to reduce the pressure difference between the two sides during the switching process and prevent seepage is characterized in that: the first pressure sensor 11, the second pressure sensor 12, and the gear 14 in the automatic control part can wirelessly transmit the collected signals to the controller 13, and the controller 13 can wirelessly transmit control commands to the motor 8 and the electric connector 17 for control and adjustment.

[0017] Furthermore, the novel butterfly valve used to reduce the pressure difference between the two sides and prevent seepage during the switching process is characterized in that: the electric connector 17 in the automatic control part is an electric regulating valve.

[0018] The beneficial effects of this utility model are as follows: The proposed novel butterfly valve for reducing the pressure difference between the two sides during opening and closing to prevent seepage is characterized by comprising a manual butterfly valve part, an auxiliary electric ball valve part, and an automatic control part. It effectively controls fluid flow and prevents seepage under conditions of large pressure difference between the two sides of the valve, and allows for easy opening and closing of the valve. Two states are set for valve closure: normal slow valve closure and rapid emergency valve closure. During normal slow valve closure, the controller 13 receives the signal for slow valve closure and the signals from the two pressure sensors, determines the pressure difference between the two sides of the butterfly valve plate 3, and sends a control signal to the motor 8 to start the motor 8 and slowly close the electric ball valve 9. During rapid emergency valve closure, the controller 13 receives the signal for rapid valve closure and the signals from the two pressure sensors, determines the pressure difference between the two sides of the butterfly valve plate 3, and sends a control signal to the motor 8 and the electric connector 17 to start the motor 8 and slowly close the electric ball valve 9. When the butterfly valve is closed, the electric connector 17 is activated, causing it to open rapidly and quickly reduce the pressure difference across the butterfly valve plate 3, allowing the butterfly valve plate 3 to close quickly and easily. Simultaneously, the controller 13 detects the pressure difference between the two pressure sensors; when the pressure difference falls below a certain value, the electric connector 17 is closed. After the butterfly valve plate 3 closes, the electric ball valve 9 is also closed, further strengthening the shut-off effect and preventing seepage. When the butterfly valve plate 3 needs to be opened, the controller 13 receives a signal to open the valve and sends a control signal to the motor 8, starting the motor 8 to slowly open the electric ball valve 9, allowing the butterfly valve plate 3 to open easily. The novel butterfly valve proposed in this invention, used to reduce the pressure difference across the valve during opening and closing to prevent seepage, has a simple structure and can effectively control fluid flow and prevent seepage even under conditions of large pressure difference across the valve, allowing for easy opening and closing of the valve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a new type of butterfly valve designed to reduce the pressure difference between the two sides during switching and prevent seepage.

[0020] Figure 1 The labels in the table are as follows: 1. First flange, 2. First pipe, 3. Butterfly valve plate, 4. Second pipe, 5. Second flange, 6. Third flange, 7. Fourth flange, 8. Motor, 9. Electric ball valve, 10. Turntable, 11. First pressure sensor, 12. Second pressure sensor, 13. Controller, 14. Gear, 15. Drive shaft, 16. First connecting pipe, 17. Electric connecting device, 18. Second connecting pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] See Figure 1 This invention provides a novel butterfly valve for reducing the pressure difference between the two sides during the switching process to prevent seepage. It is characterized by including a manual butterfly valve part, an auxiliary electric ball valve part, and an automatic control part.

[0023] The manual butterfly valve section includes a first flange 1, a first pipe 2, a butterfly valve plate 3, a second pipe 4, a second flange 5, a turntable 10, a gear 14, and a drive shaft 15.

[0024] The auxiliary electric ball valve section includes a third flange 6, a fourth flange 7, a motor 8, and an electric ball valve 9.

[0025] The automatic control unit includes a motor 8, a first pressure sensor 11, a second pressure sensor 12, a controller 13, a gear 14, a first connecting pipe 16, an electric connector 17, and a second connecting pipe 18.

[0026] The present invention proposes a novel butterfly valve for reducing the pressure difference between the two sides during the opening and closing process to prevent seepage. It is characterized by including a manual butterfly valve part, an auxiliary electric ball valve part, and an automatic control part. It is used to effectively control fluid flow and prevent seepage when the pressure difference between the two sides of the valve is large, and can easily open or close the valve. When the butterfly valve plate 3 needs to be closed, as the turntable 10 slowly rotates to the left, it sends a signal to the controller 13 to slowly close the valve. The controller 13 receives signals from the first pressure sensor 11 and the second pressure sensor 12, and determines the pressure difference across the butterfly valve plate 3. When the pressure difference exceeds a certain value, the controller 13 sends a control signal to the motor 8, starting the motor 8 to slowly close the electric ball valve 9. Due to the closing of the electric ball valve 9, the flow rate through the butterfly valve plate 3 decreases, and the pressure difference across the butterfly valve plate 3 decreases, allowing the butterfly valve plate 3 to be easily closed. After the butterfly valve plate 3 is closed, the electric ball valve 9 is also closed, thus further strengthening the shut-off effect and preventing seepage. When the turntable 10 rotates rapidly to the left, it sends a signal to the controller 13 to quickly close the valve. The controller 13 receives signals from the first pressure sensor 11 and the second pressure sensor 12, and determines the pressure difference across the butterfly valve plate 3. When the pressure difference across the butterfly valve plate 3 exceeds a certain value, the controller 13 simultaneously sends control signals to the motor 8 and the electric connector 17. The motor 8 is started, causing the electric ball valve 9 to close slowly, while the electric connector 17 is started, causing it to open quickly. This rapidly reduces the pressure difference across the butterfly valve plate 3, allowing it to close quickly and easily. Simultaneously, the controller 13 detects the pressure difference between the first pressure sensor 11 and the second pressure sensor 12. When the pressure difference falls below a certain value, the electric connector 17 is closed. After the butterfly valve plate 3 closes, the electric ball valve 9 is also closed, further strengthening the shut-off effect and preventing seepage. When the butterfly valve plate 3 needs to be opened, the turntable 10 rotates to the right, sending a signal to the controller 13 to open the valve. The controller 13 then sends a control signal to the motor 8, starting the motor 8 to slowly open the electric ball valve 9, allowing the butterfly valve plate 3 to open easily.

[0027] The specific implementation method is as follows:

[0028] In Example 1, when the pipeline is in a flowing state, the right side of the butterfly valve plate 3 is a high-pressure air conditioning water system, and the left side is low-pressure river water. The water flows from right to left, passing sequentially through the electric ball valve 9, the second pipeline 4, the first pressure sensor 11, the butterfly valve plate 3, the first pipeline 2, and the second pressure sensor 12. When the butterfly valve plate 3 needs to be closed, the turntable 10 slowly rotates to the left. The turntable 10 drives the gear 4 to move, the gear 4 drives the transmission shaft 15 to rotate, and the transmission shaft 15 drives the butterfly valve plate 3 to close. The gear 4 detects the slow closing signal and sends the slow closing valve signal to the control... The controller 13 receives signals from the first pressure sensor 11 and the second pressure sensor 12, and determines the pressure difference across the butterfly valve plate 3. When the pressure difference across the butterfly valve plate 3 exceeds a certain value, the controller 13 sends a control signal to the motor 8 to start the motor 8 and slowly close the electric ball valve 9. Due to the closing of the electric ball valve 9, the flow rate through the butterfly valve plate 3 is reduced, the pressure difference across the butterfly valve plate 3 is reduced, and the butterfly valve plate 3 can be easily closed. After the butterfly valve plate 3 is closed, the electric ball valve 9 is also in a closed state, thus further strengthening the shut-off effect and preventing seepage.

[0029] In Example 2, when the pipeline is in a flowing state, the right side of the butterfly valve plate 3 is a high-pressure air conditioning water system, and the left side is low-pressure river water. The water flows from right to left, passing sequentially through the electric ball valve 9, the second pipeline 4, the first pressure sensor 11, the butterfly valve plate 3, the first pipeline 2, and the second pressure sensor 12. When the butterfly valve plate 3 needs to be closed quickly, the turntable 10 rotates rapidly to the left. The turntable 10 drives the gear 4 to move, the gear 4 drives the transmission shaft 15 to rotate, and the transmission shaft 15 drives the butterfly valve plate 3 to close. The gear 4 detects the signal of rapid closure and sends the signal of rapid valve closure to the controller 13. The controller 13 receives the signals from the first pressure sensor 11 and the second pressure sensor 12 and judges the pressure difference on both sides of the butterfly valve plate 3. When the butterfly valve plate 3... When the pressure difference exceeds a certain value, the controller 13 simultaneously sends control signals to the motor 8 and the electric connector 17. The motor 8 is started to slowly close the electric ball valve 9, and the electric connector 17 is started to quickly open. Most of the water in the second pipe 4 flows to the second connecting pipe 18, then through the electric connector 17, and finally through the first connecting pipe 16 into the first pipe 2. This quickly reduces the pressure difference across the butterfly valve plate 3, allowing the butterfly valve plate 3 to close quickly and easily. At the same time, the controller 13 detects the pressure difference between the first pressure sensor 11 and the second pressure sensor 12. When the pressure difference is lower than a certain value, the electric connector 17 is closed. After the butterfly valve plate 3 is closed, the electric ball valve 9 is also closed, further strengthening the shut-off effect and preventing seepage.

[0030] In Example 3, when the pipeline is closed and the butterfly valve plate 3 needs to be opened, the turntable 10 rotates to the right, the turntable 10 drives the gear 4 to move, the gear 4 drives the transmission shaft 15 to rotate, and the transmission shaft 15 drives the butterfly valve plate 3 to open. The gear 4 detects the signal of rapid closure and sends the signal to open the valve to the controller 13. The controller 13 sends a control signal to the motor 8 to start the motor 8 so that the electric ball valve 9 opens slowly. Since the electric ball valve 9 is in a state of shut-off water flow when the valve is opened, the pressure difference on both sides of the butterfly valve 3 is small, and the butterfly valve plate 3 can be opened easily.

Claims

1. A novel butterfly valve for reducing the pressure difference between the two sides during switching to prevent leakage, characterized in that: Includes manual butterfly valve section, auxiliary electric ball valve section, and automatic control section; The manual butterfly valve includes a first flange (1), a first pipe (2), a butterfly valve plate (3), a second pipe (4), a second flange (5), a turntable (10), a gear (14), and a drive shaft (15); the first flange (1) is connected to the left end of the first pipe (2); the right end of the first pipe (2) is connected to the left end of the butterfly valve plate (3); the right end of the butterfly valve plate (3) is connected to the left end of the second pipe (4); the right end of the second pipe (4) is connected to the second flange (5); the turntable (10) is connected to the gear (14); the gear (14) is connected to the drive shaft (15); and the drive shaft (15) is connected to the butterfly valve plate (3). The auxiliary electric ball valve part includes a third flange (6), a fourth flange (7), a motor (8), and an electric ball valve (9); the third flange (6) is connected to the left end of the electric ball valve (9); the right end of the electric ball valve (9) is connected to the fourth flange (7); the motor (8) is connected to the electric ball valve (9); The automatic control unit includes a motor (8), a first pressure sensor (11), a second pressure sensor (12), a controller (13), a gear (14), a first connecting pipe (16), an electric connector (17), and a second connecting pipe (18). The motor (8) is connected to an electric ball valve (9). The first pressure sensor (11) is connected to the second pipe (4) to detect the pressure inside the second pipe (4). The second pressure sensor (12) is connected to the first pipe (2) to detect the pressure inside the first pipe (2). The controller (13) is placed to the right of the gear (14) to receive signals from the first pressure sensor (11), the second pressure sensor (12), and the gear (14) to control and regulate the start and stop of the motor (8) and the electric connector (17). The upper end of the first connecting pipe (16) is connected to the first pipe (2), and the lower end is connected to the electric connector (17). The upper end of the second connecting pipe (18) is connected to the second pipe (4), and the lower end is connected to the electric connector (17). The second flange (5) in the manual butterfly valve section is connected to the third flange (6) in the auxiliary electric ball valve section.

2. The novel butterfly valve according to claim 1 for reducing the pressure difference between the two sides during switching and preventing leakage, characterized in that: The first flange (1) and the second flange (5) of the manual butterfly valve section have four evenly arranged bolt holes for connecting the pipes.

3. The novel butterfly valve according to claim 1 for reducing the pressure difference between the two sides during switching and preventing leakage, characterized in that: The butterfly valve plate (3) in the manual butterfly valve section is a wafer-type butterfly valve.

4. The novel butterfly valve according to claim 1 for reducing the pressure difference between the two sides during switching and preventing leakage, characterized in that: The materials of the first flange (1), first pipe (2), butterfly valve plate (3), second pipe (4), second flange (5), and drive shaft (15) in the manual butterfly valve part are all stainless steel.

5. The novel butterfly valve according to claim 1 for reducing the pressure difference between the two sides during switching and preventing leakage, characterized in that: The third flange (6) and fourth flange (7) of the auxiliary electric ball valve section have four evenly arranged bolt holes for connecting the pipes.

6. The novel butterfly valve according to claim 1 for reducing the pressure difference between the two sides during switching and preventing leakage, characterized in that: The motor (8) in the auxiliary electric ball valve section controls the opening degree of the electric ball valve (9), and the electric ball valve (9) is a V-type ball valve.

7. The novel butterfly valve according to claim 1 for reducing the pressure difference between the two sides during switching and preventing leakage, characterized in that: The first pressure sensor (11), the second pressure sensor (12), and the gear (14) in the automatic control section can wirelessly transmit the collected signals to the controller (13), and the controller (13) can wirelessly transmit control commands to the motor (8) and the electric connector (17) for control and adjustment.

8. The novel butterfly valve according to claim 1 for reducing the pressure difference between the two sides during switching and preventing leakage, characterized in that: The electric connector (17) in the automatic control section is an electric regulating valve.

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