Control valve for adjusting bay air pressure for ship ventilation system

Abstract

The invention relates to the technical field of control valves, in particular to a control valve for adjusting bay air pressure for a ship ventilation system, which comprises a butterfly valve body, the inner wall of the butterfly valve body is fixedly connected with a damping grid, the outer wall of the top of the butterfly valve body is fixedly connected with an equipment shell, and the outer wall of one side of the equipment shell is fixedly connected with a motor. A valve rod is rotatably connected to the interior of the equipment shell, a valve plate is fixedly connected to the outer wall of the valve rod, a mounting groove is formed in the outer wall of the valve plate, and a sealing strip is movably connected to the interior of the mounting groove. When the soft magnetic ring frame moves towards the interior of the mounting groove, the sealing strip moves along with the soft magnetic ring frame, the situation that when the valve plate rotates in the butterfly valve body, the sealing strip makes contact with the inner wall of the butterfly valve body all the time is avoided, friction between the sealing strip and the inner wall of the butterfly valve body is increased, and correspondingly, the sealing strip enters the interior of the mounting groove through the sealing strip; abrasion of the sealing strip is reduced, the sealing effect of the sealing strip is prevented from being reduced, and meanwhile the service life of the sealing strip is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of control valves, and in particular relates to a control valve for regulating compartment air pressure in a ship ventilation system. Background Art

[0002] The bulkhead air pressure regulating control valve for ship ventilation systems is an automated valve device designed specifically for ship environments. Its core function is to balance and control the air pressure between different compartments of the ship (such as the engine room, cargo hold, and living compartment, etc.) by adjusting the airflow or air pressure in the ventilation duct, thereby ensuring safe ship operation, crew comfort, and normal operation of equipment.

[0003] However, the conventional device still has the following problems when used: In the prior art, air pressure regulation between compartments mainly relies on butterfly valves. The butterfly valve seals the valve body through the cooperation of the valve plate and the sealing strip. When the butterfly valve is opened, the driving device drives the valve plate to rotate within the valve body to release the passage. However, during the opening and closing process of the valve plate, continuous friction occurs between the sealing strip on its periphery and the inner wall of the valve body, which easily causes the sealing strip to wear, affecting the sealing effect and shortening its service life. Therefore, we need a control valve for bulkhead air pressure regulation for ship ventilation systems to solve the problem of friction generated by the sealing strip during rotation and reduce the friction of the sealing strip during rotation. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention aims to provide a control valve for regulating compartment air pressure in a ship ventilation system, which has the advantage of reducing friction of a sealing strip during rotation.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a control valve for bulkhead air pressure regulation in a ship ventilation system, comprising a butterfly valve body, the inner wall of the butterfly valve body being fixedly connected to a rectifier grid, the outer wall of the top of the butterfly valve body being fixedly connected to an equipment shell, the outer wall of one side of the equipment shell being fixedly connected to a motor, the interior of the equipment shell being rotatably connected to a valve stem, the outer wall of the valve stem being fixedly connected to a valve plate, the outer wall of the valve plate being provided with a mounting groove, the interior of the mounting groove being movably connected to a sealing strip, the outer wall of the sealing strip being provided with an anti-wear mechanism, the anti-wear mechanism comprising a soft magnetic ring frame, the interior of the soft magnetic ring frame being fixedly connected to the outer wall of the sealing strip, and the outer wall of the soft magnetic ring frame being in movably contact with the interior of the mounting groove.

[0006] Preferably, a second groove is provided on the inner wall of the butterfly valve body at the position of the sealing strip, and a strong magnetic ring is fixedly connected to the inner wall of the second groove. The inner ring wall of the strong magnetic ring is connected to the outer ring wall of the soft magnetic ring frame with opposite poles of attraction.

[0007] Preferably, the inner ring wall of the soft magnetic ring frame is fixedly connected to a reset spring three, the outer wall of one end of the reset spring three is fixedly connected to the inner wall of the mounting groove, and a certain gap is left between the two ends of the soft magnetic ring frame and the two ends of the mounting groove.

[0008] Preferably, the valve plate is provided with an air vent communicating with the outer walls on both sides, and the interior of the air vent is in movable contact with a sealing plate.

[0009] Preferably, a slide groove is provided inside the valve plate, the outer wall of one end of the slide groove is connected through the inside of the mounting groove, the inside of the slide groove is slidably connected to the outer wall of the sealing plate, the outer wall of one end of the sealing plate is fixedly connected to a reset spring 2, the outer wall of one end of the reset spring 2 is fixedly connected to the inner wall of the slide groove, and the outer wall of the other end of the sealing plate is in active contact with the inner ring wall of the soft magnetic ring frame.

[0010] Preferably, the interior of the mounting groove is fixedly connected to a telescopic shell, the outer wall of one end of the telescopic shell is fixedly connected to a discharge pipe, the outer wall of the soft magnetic ring frame is provided with a circular hole, the interior of the circular hole is fixedly connected to the outer wall of the discharge pipe, and the outer wall of the sealing strip is provided with a microhole at the position of the circular hole.

[0011] Preferably, the outer wall of the top of the valve stem is fixedly connected to a worm wheel, the outer wall of the worm wheel is meshingly connected to a worm, the outer walls at both ends of the worm are rotatably connected to a support rod, and the outer wall of the bottom of the support rod is fixedly connected to the bottom of the inner wall of the equipment shell.

[0012] Preferably, a groove 1 is opened inside the worm, and a force-bearing rod is slidably connected inside the worm. The outer wall of one end of the force-bearing rod rotates through the interior of the equipment shell and is fixedly connected to a handle. The outer wall of the force-bearing rod is fixedly connected to a raised strip, and the outer wall of the raised strip is slidably connected to the inside of groove 1.

[0013] Preferably, the output end of the motor is fixedly connected to the main shaft, a cavity is opened inside the main shaft, the inner wall of the cavity is fixedly connected to a limit plate, the interior of the cavity is rotatably connected to a mounting plate, the outer wall of one end of the mounting plate is fixedly connected to a reset spring 1, and the outer wall of one end of the reset spring 1 is fixedly connected to a memory-shaped piece.

[0014] Preferably, the outer wall on one side of the memory-shaped piece is in movable contact with the outer wall on one side of the limiting plate, and the outer wall on one side of the memory-shaped piece is fixedly connected to the outer wall on the other end of the force-bearing rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the soft magnetic ring frame moves into the installation groove, the sealing strip moves accordingly, which prevents the sealing strip from always contacting the inner wall of the butterfly valve body when the valve plate rotates inside the butterfly valve body, thereby increasing the friction between the sealing strip and the inner wall of the butterfly valve body, and correspondingly entering the interior of the installation groove through the sealing strip, reducing the wear of the sealing strip, preventing the sealing effect of the sealing strip from being reduced, and extending the service life of the sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the rectifier grid structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the butterfly valve body structure of the present invention.

[0018] Figure 3 Schematic diagram of the internal structure of the device shell of the present invention.

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0020] Figure 5 It is a schematic diagram of the mounting plate structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the groove 2 structure of the present invention.

[0022] Figure 7 It is a schematic diagram of the valve plate structure of the present invention.

[0023] Figure 8 It is a schematic diagram of the internal structure of the installation slot of the present invention.

[0024] Figure 9 It is a schematic diagram of the cross-sectional structure of the valve plate of the present invention.

[0025] Figure 10 for Figure 9 Enlarged structural diagram at point B in the middle.

[0026] Figure 11 Schematic diagram of the microporous structure of the present invention.

[0027] Figure 12 It is a schematic diagram of the circular hole structure of the present invention.

[0028] Figure 13 It is a schematic diagram of the telescopic shell structure of the present invention.

[0029] In the figure: 1. Butterfly valve body; 11. Equipment shell; 12. Rectifier grid; 13. Motor; 131. Worm gear; 132. Worm; 133. Valve stem; 134. Main shaft; 14. Valve plate; 2. Handle; 21. Force rod; 22. Groove 1; 23. Limit plate; 24. Memory shape piece; 25. Reset spring 1; 26. Mounting plate; 3. Groove 2; 31. Strong magnetic ring; 32. Mounting groove; 33. Sealing strip; 34. Soft magnetic ring frame; 35. Reset spring 3; 4. Air vent; 41. Sealing plate; 42. Slide; 43. Reset spring 2; 5. Telescopic shell; 51. Micropore; 52. Round hole; 53. Discharge pipe. DETAILED DESCRIPTION

[0030] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit 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.

[0031] For example 1, please refer to Figures 1 to 13 The present invention provides a technical solution for a control valve for regulating the air pressure in a compartment of a ship ventilation system, comprising a butterfly valve body 1, the inner wall of the butterfly valve body 1 being fixedly connected to a rectifier grid 12, the outer wall of the top of the butterfly valve body 1 being fixedly connected to a device shell 11, the outer wall of one side of the device shell 11 being fixedly connected to a motor 13, the interior of the device shell 11 being rotatably connected to a valve stem 133, the outer wall of the valve stem 133 being fixedly connected to a valve plate 14, the outer wall of the valve plate 14 being provided with an installation groove 32, the interior of the installation groove 32 being movably connected to a valve stem 133, The sealing strip 33 and the outer wall of the sealing strip 33 are provided with an anti-wear mechanism, which includes a soft magnetic ring frame 34. The interior of the soft magnetic ring frame 34 is fixedly connected to the outer wall of the sealing strip 33, and the outer wall of the soft magnetic ring frame 34 is in active contact with the interior of the mounting groove 32. The outer wall of the top of the valve stem 133 is fixedly connected to the worm gear 131, and the outer wall of the worm gear 131 is meshedly connected to the worm 132. The outer walls of both ends of the worm 132 are rotatably connected to the support rod, and the outer wall of the bottom of the support rod is fixedly connected to the bottom of the inner wall of the equipment shell 11.

[0032] Since the motor 13 has a system control function, the operator can easily remotely control the opening and closing of the butterfly valve body 1, avoiding the need for the operator to run to the side of the butterfly valve body 1 to perform manual operation when controlling the butterfly valve body 1. The opening or closing of the butterfly valve body 1 can be controlled remotely, which increases the convenience of the operator's operation of the butterfly valve body 1.

[0033] Example 2. On the basis of Example 1, a groove 2 3 is provided on the inner wall of the butterfly valve body 1 at the position of the sealing strip 33. A strong magnetic ring 31 is fixedly connected to the inner wall of the groove 2 3. The inner ring wall of the strong magnetic ring 31 and the outer ring wall of the soft magnetic ring frame 34 are connected with opposite poles of attraction. The inner ring wall of the soft magnetic ring frame 34 is fixedly connected with a reset spring 35. The outer wall of one end of the reset spring 35 is fixedly connected to the inner wall of the mounting groove 32. A certain gap is left between the two ends of the soft magnetic ring frame 34 and the two ends of the mounting groove 32.

[0034] When the soft magnetic ring frame 34 moves into the installation groove 32, the sealing strip 33 moves accordingly, avoiding the sealing strip 33 always contacting the inner wall of the butterfly valve body 1 when the valve plate 14 rotates inside the butterfly valve body 1, thereby increasing the friction between the sealing strip 33 and the inner wall of the butterfly valve body 1, and correspondingly entering the interior of the installation groove 32 through the sealing strip 33, reducing the wear of the sealing strip 33, preventing the sealing effect of the sealing strip 33 from being reduced, and at the same time extending the service life of the sealing strip 33.

[0035] Embodiment 3, on the basis of embodiment 2, a vent hole 4 is provided on the valve plate 14 with the outer walls on both sides connected, the interior of the vent hole 4 is in movable contact with a sealing plate 41, a slide groove 42 is provided inside the valve plate 14, the outer wall of one end of the slide groove 42 is connected through the interior of the mounting groove 32, the interior of the slide groove 42 is slidably connected to the outer wall of the sealing plate 41, the outer wall of one end of the sealing plate 41 is fixedly connected to a reset spring 2 43, the outer wall of one end of the reset spring 2 43 is fixedly connected to the inner wall of the slide groove 42, and the outer wall of the other end of the sealing plate 41 is in movable contact with the inner ring wall of the soft magnetic ring frame 34.

[0036] By setting the air vent 4, the valve plate 14 can be stably fixed inside the butterfly valve body 1 when the opening angle is not ninety degrees, reducing the impact force of the airflow on the valve plate 14, thereby reducing the risk of cracks due to excessive force at the connection, and protecting the connection structure between the valve plate 14 and the valve stem 133. At the same time, during the closing process of the valve plate 14, the existence of the air vent 4 balances the air pressure on both sides of the valve plate 14, reducing the aerodynamic resistance encountered when the valve plate 14 is closed, thereby reducing the aerodynamic load of the valve plate 14 during the closing process, which not only makes the valve plate 14 close more smoothly, but also reduces the impact on the valve plate 14 and related components during the closing process, thereby improving the stability and reliability of the closing process.

[0037] Example 4, based on Example 2, the interior of the mounting groove 32 is fixedly connected to a telescopic shell 5, the outer wall of one end of the telescopic shell 5 is fixedly connected to a discharge pipe 53, a circular hole 52 is provided on the outer wall of the soft magnetic ring frame 34, the interior of the circular hole 52 is fixedly connected to the outer wall of the discharge pipe 53, and a microhole 51 is provided on the outer wall of the sealing strip 33 at the position of the circular hole 52.

[0038] The antioxidant opens the micropores 51 on the sealing strip 33 through the discharge pipe 53, so that the antioxidant flows from the micropores 51 to the outer wall of the sealing strip 33, thereby maintaining the outer wall of the sealing strip 33 and preventing the outer wall of the sealing strip 33 from drying out and cracking after long-term use, thereby affecting the sealing effect of the sealing strip 33. Accordingly, by adding the antioxidant to the inside of the sealing strip 33 when the valve plate 14 is opened, the sealing strip 33 is nourished and protected, effectively preventing the outer wall from drying out and cracking, and maintaining the good performance of the sealing strip 33.

[0039] Example 5. On the basis of Example 1, a groove 22 is provided inside the worm 132, and the internal sliding connection of the worm 132 is connected to the force-bearing rod 21. The outer wall of one end of the force-bearing rod 21 rotates and passes through the interior of the equipment shell 11 and is fixedly connected to the handle 2. The outer wall of the force-bearing rod 21 is fixedly connected to a raised strip, and the outer wall of the raised strip is slidably connected to the interior of the groove 22. The output end of the motor 13 is fixedly connected to the main shaft 134, and a cavity is provided inside the main shaft 134. The inner wall of the cavity is fixedly connected to the limiting plate 23, and the internal rotation connection of the cavity is connected to the mounting plate 26. The outer wall of one end of the mounting plate 26 is fixedly connected to a return spring 25, and the outer wall of one end of the return spring 25 is fixedly connected to a memory plate 24. The outer wall of one side of the memory plate 24 is in movably contact with the outer wall of one side of the limiting plate 23, and the outer wall of one side of the memory plate 24 is fixedly connected to the outer wall of the other end of the force-bearing rod 21.

[0040] By moving the handle 2, the force-bearing rod 21 can drive the worm 132 to move, thereby controlling the valve plate 14 to open or close, avoiding the situation where the valve plate 14 cannot be opened or closed through the system cabinet in the event of a fire and power outage, ensuring that the ship's ventilation system can still be effectively regulated in an emergency, maintaining or adjusting the compartment air pressure, providing necessary ventilation conditions for emergency actions such as personnel evacuation and fire fighting, and ensuring the safety of the ship.

[0041] The working principle and use process of the present invention are as follows: when working, first, the motor 13 is started. Since a limiting hole is provided on the main shaft 134, the limiting hole is movably connected with the raised strip on the force-bearing rod 21, so that the force-bearing rod 21 cannot rotate inside the main shaft 134. Then, through the operation of the motor 13, the main shaft 134 can drive the force-bearing rod 21 to rotate. Then, due to the connection between the raised strip on the force-bearing rod 21 and the groove 122, when the force-bearing rod 21 rotates, the raised strip drives the worm 132 to rotate accordingly. Due to the meshing connection between the worm 132 and the worm wheel 131, the worm 132 is engaged with the worm wheel 131. When 132 rotates, the worm gear 131 rotates accordingly, and the rotation of the worm gear 131 causes the valve stem 133 to drive the valve plate 14 to rotate accordingly, thereby controlling the opening or closing of the butterfly valve body 1. Since the motor 13 has a system control function, the operator can easily remotely control the opening and closing of the butterfly valve body 1, avoiding the need for the operator to run to the side of the butterfly valve body 1 for manual operation when controlling the butterfly valve body 1. The opening or closing of the butterfly valve body 1 can be controlled remotely, which increases the convenience of the operator's operation of the butterfly valve body 1.

[0042] When the valve stem 133 drives the valve plate 14 to open, the valve plate 14 rotates inside the butterfly valve body 1, thereby driving the relevant structures inside the mounting groove 32 to rotate synchronously. As the soft magnetic ring frame 34 gradually leaves the position of the strong magnetic ring 31, the magnetic force between the two disappears. Due to the loss of the force of attraction between opposite poles, the strong magnetic ring 31 no longer applies tension to the reset spring 35. At this time, the reset spring 35, by virtue of its own automatic rebound characteristics, will pull the soft magnetic ring frame 34 back to the inside of the mounting groove 32. The fixed connection between the frame 34 and the sealing strip 33 is such that when the soft magnetic ring frame 34 moves into the mounting groove 32, the sealing strip 33 moves accordingly, thereby preventing the sealing strip 33 from always contacting the inner wall of the butterfly valve body 1 when the valve plate 14 rotates inside the butterfly valve body 1, thereby increasing the friction between the sealing strip 33 and the inner wall of the butterfly valve body 1, and correspondingly entering the interior of the mounting groove 32 through the sealing strip 33, reducing the wear of the sealing strip 33, preventing the sealing effect of the sealing strip 33 from being reduced, and extending the service life of the sealing strip 33.

[0043] It should be noted that the force of the reset spring three 35 itself is less than the force of attraction between the opposite poles of the soft magnetic ring frame 34 and the strong magnetic ring 31. The force of the reset spring three 35 itself is greater than the hardness of the soft magnetic ring frame 34 itself, and can pull the soft magnetic ring frame 34 to deform. Since the sealing strip 33 itself will deform under the force, it will not affect the interior of the internal installation groove 32 of the sealing strip 33.

[0044] When the soft magnetic ring frame 34 moves toward the inside of the mounting groove 32, a driving force is generated on the sealing plate 41. When the sealing plate 41 is driven, it squeezes the slide groove 42, so that the wider part of the sealing plate 41 enters the bottom of the slide groove 42. When the narrower position of the sealing plate 41 stops at the position of the air vent 4, since the width of the air vent 4 is greater than the narrower width of the sealing plate 41, the air flow can flow through the air vent 4, avoiding the large impact of the air flow on the valve plate 14, which causes cracks to appear at the connection between the valve plate 14 and the valve stem 133. By setting the air vent 4, the valve plate 14 can be opened at an angle of non-ninety degrees. The air vents 4 can be stably fixed inside the butterfly valve body 1 under the condition of high temperature, reducing the impact force of the airflow on the valve plate 14, thereby reducing the risk of cracks caused by excessive force at the connection, and protecting the connection structure between the valve plate 14 and the valve stem 133. At the same time, during the closing process of the valve plate 14, the air vents 4 balance the air pressure on both sides of the valve plate 14, reducing the aerodynamic resistance encountered when the valve plate 14 is closed, thereby reducing the aerodynamic load of the valve plate 14 during the closing process, which not only makes the valve plate 14 close more smoothly, but also reduces the impact on the valve plate 14 and related components during the closing process, thereby improving the stability and reliability of the closing process.

[0045] When the soft magnetic ring frame 34 moves downward, the telescopic shell 5 is squeezed. When the telescopic shell 5 is subjected to compression, the pressure of the antioxidant inside the telescopic shell 5 will be changed, so that the antioxidant moves toward the discharge pipe 53, while the outer wall of the telescopic shell 5 is propped up. The antioxidant opens the micropores 51 on the sealing strip 33 through the discharge pipe 53, so that the antioxidant flows from the micropores 51 to the outer wall of the sealing strip 33, thereby maintaining the outer wall of the sealing strip 33 and avoiding the outer wall of the sealing strip 33 from drying out and cracking under long-term use, which affects the sealing effect of the sealing strip 33. Accordingly, by adding the antioxidant to the inside of the sealing strip 33 when the valve plate 14 is opened, the sealing strip 33 is nourished and protected, effectively preventing the outer wall from drying out and maintaining the good performance of the sealing strip 33.

[0046] It should be noted that the antioxidant can be added into the telescopic shell 5 by inserting the microtube for adding the antioxidant into the microhole 51 and contacting the discharge tube 53 .

[0047] When the valve plate 14 is closed by the valve stem 133, when the mounting groove 32 on the valve plate 14 drives the internal structure to the position of the strong magnetic ring 31, the strong magnetic ring 31 and the soft magnetic ring frame 34 enter the inner part of the magnetic range, and the strong magnetic ring 31 and the soft magnetic ring frame 34 are attracted to each other at different levels, so that the soft magnetic ring frame 34 can push the sealing strip 33 to move to the outer wall of the mounting groove 32. When the sealing strip 33 moves to the inside of the mounting groove 32, the strong magnetic ring 31 and the soft magnetic ring frame 34 squeeze the sealing strip 33 to press the sealing strip 33 against the butterfly valve body 1. The contact surface with the valve plate 14 is deformed, so that the sealing strip 33 fills the gap between the butterfly valve body 1 and the valve plate 14, thereby increasing the sealing effect between the butterfly valve body 1 and the valve plate 14, ensuring that when the ventilation is closed, the gas will not escape from the valve plate 14, and the air pressure in the compartment is maintained stable. Secondly, the deformation ability of the sealing strip 33 enables it to adapt to the slight dimensional changes or unevenness between the butterfly valve body 1 and the valve plate 14, and maintain a good sealing effect under different working conditions, thereby enhancing the adaptability of the butterfly valve body 1 to various operating environments.

[0048] After the return spring 2 43 loses the pressure of the soft magnetic ring frame 34, it will push the sealing plate 41 to move downward inside the slide groove 42, so that the wider position of the sealing plate 41 moves to the position of the air vent 4, which can mechanically block the air vent 4 and prevent gas from leaking through the air vent 4 when the valve plate 14 is blocking. This correspondingly increases the sealing effect of the valve plate 14 and can better maintain the stability of the compartment air pressure.

[0049] By the operator pulling the handle 2 outward, the force applied to the handle 2 can drive the force-bearing rod 21 to move inside the main shaft 134. Through the fixed connection between the force-bearing rod 21 and the memory-shaped piece 24, when the force-bearing rod 21 drives the memory-shaped piece 24 to move, when the memory-shaped piece 24 passes through the limit plate 23, the memory-shaped piece 24 is deformed due to the obstruction of the limit plate 23, and thus moves inside the cavity through the limit plate 23. The cooperation between the limit plate 23 and the memory-shaped piece 24 avoids the centrifugal force generated by the mounting plate 26 to move out of the cavity when the motor 13 drives the main shaft 134 to rotate, thereby correspondingly increasing the stability of the force-bearing rod 21 inside the cavity.

[0050] After one end of the force-bearing rod 21 is completely moved out of the cavity, the operator can manually turn the handle 2. Through the movement of the handle 2, the force-bearing rod 21 can drive the worm 132 to move, thereby controlling the valve plate 14 to open or close, avoiding the inability to open or close the valve plate 14 through the system cabinet in the event of a fire power outage, ensuring that the ship's ventilation system can still be effectively regulated in an emergency, maintaining or adjusting the compartment air pressure, providing necessary ventilation conditions for emergency actions such as personnel evacuation and fire fighting, and ensuring the safety of the ship.

[0051] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A control valve for regulating compartment air pressure in a ship ventilation system, comprising a butterfly valve body (1), characterized in that: The inner wall of the butterfly valve body (1) is fixedly connected to a rectifier grid (12), the outer wall of the top of the butterfly valve body (1) is fixedly connected to a device shell (11), the outer wall of one side of the device shell (11) is fixedly connected to a motor (13), the interior of the device shell (11) is rotatably connected to a valve stem (133), the outer wall of the valve stem (133) is fixedly connected to a valve plate (14), the outer wall of the valve plate (14) is provided with a mounting groove (32), the interior of the mounting groove (32) is movably connected to a sealing strip (33), and the outer wall of the sealing strip (33) is provided with an anti-wear mechanism; The anti-wear mechanism includes a soft magnetic ring frame (34), the interior of the soft magnetic ring frame (34) is fixedly connected to the outer wall of the sealing strip (33), and the outer wall of the soft magnetic ring frame (34) is in movable contact with the interior of the installation groove (32).

2. A control valve for regulating compartment air pressure for a ship ventilation system according to claim 1, characterized in that: The inner wall of the butterfly valve body (1) is provided with a second groove (3) at the position of the sealing strip (33), and the inner wall of the second groove (3) is fixedly connected with a strong magnetic ring (31), and the inner ring wall of the strong magnetic ring (31) is connected to the outer ring wall of the soft magnetic ring frame (34) with opposite poles of attraction.

3. The control valve for regulating compartment air pressure for a ship ventilation system according to claim 2, characterized in that: The inner ring wall of the soft magnetic ring frame (34) is fixedly connected to a reset spring three (35), the outer wall of one end of the reset spring three (35) is fixedly connected to the inner wall of the mounting groove (32), and a certain gap is left between the two ends of the soft magnetic ring frame (34) and the two ends of the mounting groove (32).

4. The control valve for regulating compartment air pressure for a ship ventilation system according to claim 1, characterized in that: The valve plate (14) is provided with an air vent (4) communicating with the outer walls on both sides, and the interior of the air vent (4) is in movable contact with a sealing plate (41).

5. The control valve for regulating compartment air pressure for a ship ventilation system according to claim 4, characterized in that: A slide groove (42) is provided inside the valve plate (14), and the outer wall of one end of the slide groove (42) is connected to the inside of the mounting groove (32), and the inside of the slide groove (42) is slidably connected to the outer wall of the sealing plate (41), and the outer wall of one end of the sealing plate (41) is fixedly connected to the outer wall of the return spring 2 (43), and the outer wall of one end of the return spring 2 (43) is fixedly connected to the inner wall of the slide groove (42), and the outer wall of the other end of the sealing plate (41) is in active contact with the inner ring wall of the soft magnetic ring frame (34).

6. The control valve for regulating compartment air pressure for a ship ventilation system according to claim 3, characterized in that: The interior of the mounting groove (32) is fixedly connected to a telescopic shell (5), the outer wall of one end of the telescopic shell (5) is fixedly connected to a discharge pipe (53), the outer wall of the soft magnetic ring frame (34) is provided with a circular hole (52), the interior of the circular hole (52) is fixedly connected to the outer wall of the discharge pipe (53), and the outer wall of the sealing strip (33) is provided with a microhole (51) at the position of the circular hole (52).

7. The control valve for regulating compartment air pressure for a ship ventilation system according to claim 1, characterized in that: The outer wall of the top of the valve stem (133) is fixedly connected to a worm wheel (131), the outer wall of the worm wheel (131) is meshedly connected to a worm (132), the outer walls at both ends of the worm (132) are rotatably connected to a support rod, and the outer wall of the bottom of the support rod is fixedly connected to the lower part of the inner wall of the equipment shell (11).

8. A control valve for regulating compartment air pressure for a ship ventilation system according to claim 7, characterized in that: A groove 1 (22) is provided inside the worm (132), and a force-bearing rod (21) is slidably connected inside the worm (132). The outer wall of one end of the force-bearing rod (21) rotates through the interior of the device shell (11) and is fixedly connected to a handle (2). The outer wall of the force-bearing rod (21) is fixedly connected to a raised strip, and the outer wall of the raised strip is slidably connected to the interior of the groove 1 (22).

9. The control valve for regulating compartment air pressure for a ship ventilation system according to claim 1, characterized in that: The output end of the motor (13) is fixedly connected to a main shaft (134), a cavity is provided inside the main shaft (134), the inner wall of the cavity is fixedly connected to a limit plate (23), the interior of the cavity is rotatably connected to a mounting plate (26), the outer wall of one end of the mounting plate (26) is fixedly connected to a return spring (25), and the outer wall of one end of the return spring (25) is fixedly connected to a memory-shaped piece (24).

10. A control valve for regulating compartment air pressure for a ship ventilation system according to claim 9, characterized in that: The outer wall on one side of the memory-shaped piece (24) is in movable contact with the outer wall on one side of the limiting plate (23), and the outer wall on one side of the memory-shaped piece (24) is fixedly connected to the outer wall at the other end of the force-bearing rod (21).

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