A corrosion-resistant marine valve

Abstract

The present invention discloses a corrosion-resistant marine valve, which relates to the technical field of marine valves, and comprises a valve body and a valve plate slidably arranged in the valve body to control the flow in the valve body, wherein the valve body is provided with an anti-corrosion component, wherein the anti-corrosion component comprises a medicine liquid storage box arranged above the valve body, and the bottom of the medicine liquid storage box is connected with first conveying channels which are interconnected; in the present invention, anti-corrosion medicine liquid is stored in the medicine liquid storage box in advance, and the anti-corrosion medicine liquid is allowed to fall into the valve body through the first conveying channel by opening the first blocking plate, and during the falling process, the medicine liquid can drive the rotating impeller and the stirring frame to rotate, so that the anti-corrosion medicine liquid is evenly applied to the inner wall of the valve body to form a protective film, thereby effectively preventing the erosion of seawater, and the present invention regularly performs anti-corrosion on the inside of the valve body, and the situation in which the anti-corrosion effect of the inside of the valve body decreases with the increase of the use time will not occur, and the use time is longer than that of the anti-corrosion method of the anti-corrosion coating.

Description

Technical Field

[0001] The invention relates to the technical field of marine valves, in particular to a corrosion-resistant marine valve. Background Art

[0002] In the process of ship manufacturing and operation, valves are key components for controlling fluid flow, and their performance directly affects the safety and efficiency of ships. Especially in the marine environment, valves are corroded by seawater for a long time. If the corrosion resistance of valves is poor, it will cause valve damage, affect the normal operation of the ship, and may even cause safety accidents.

[0003] In order to overcome the shortcomings of traditional metal valves, in recent years, some new corrosion-resistant materials have been gradually applied to the manufacture of marine valves. For example, new coating materials such as amorphous nickel plating have excellent corrosion resistance and can significantly improve the corrosion resistance of valves. At the same time, some special surface treatment processes are also used in the manufacture of valves, such as spraying and electroplating, to improve the corrosion resistance and service life of valves.

[0004] However, although the above-mentioned anti-corrosion coating has excellent corrosion resistance at the beginning, it may often be corroded by seawater as the service time increases, causing the coating to gradually become thinner or damaged, thereby affecting its anti-corrosion effect, especially the coating located on the inner wall of the valve body. Due to the narrow internal space of the valve body, the spraying operation is difficult, and the secondary spraying may affect the normal use of the valve. Therefore, once the anti-corrosion coating on the inner wall of the valve body fails, it often means that the entire valve body needs to be replaced, which undoubtedly increases the maintenance cost and operation risk of the ship. Summary of the invention

[0005] The object of the present invention is to provide a corrosion-resistant marine valve to solve the problems raised in the above background technology.

[0006] To solve the above technical problems, the present invention provides a corrosion-resistant marine valve, comprising a valve body and a valve plate slidably arranged in the valve body to control the flow in the valve body, the valve body is provided with an anti-corrosion component, the anti-corrosion component includes a medicine liquid storage box arranged above the valve body, the bottom of the medicine liquid storage box is connected with a first conveying channel that is interconnected, a first sealing plate is slidably arranged in the first conveying channel, and as the first sealing plate slides, the medicine in the medicine liquid storage box enters the valve body; a rotating impeller is rotatably connected to the valve body, the rotating impeller is connected to a stirring frame rotatably arranged in the valve body, and the rotating impeller and the stirring frame rotate as the medicine liquid falls.

[0007] Furthermore, it also includes a trigger component, which includes a driving gear rotatably connected to the top of the valve body, and the driving gear is meshed with two transmission racks, and the two transmission racks are symmetrical with each other around the horizontal midline of the driving gear. One end of one of the transmission racks is connected to the first blocking plate; one end of the other transmission rack is connected to a slider, and a first connecting frame is slidably connected to the bottom of the slider, and the first connecting frame moves vertically with the horizontal sliding of the slider, and the other side of the first connecting frame is connected to the valve plate.

[0008] Furthermore, a driving assembly is provided on one side of the valve body, and the driving assembly includes a turntable rotatably connected to one side of the valve body, the turntable is connected to a sliding seat, the sliding seat is slidably connected to a connecting strip, the connecting strip is provided with a sliding groove matched with the sliding seat, the connecting strip slides vertically as the turntable rotates, one end of the connecting strip is connected to a connecting rack, one side of the connecting rack is meshed with a driven gear, the driving gear rotates synchronously with the driven gear, and the valve body is connected to a driving motor that drives the turntable to rotate.

[0009] Furthermore, the valve body is connected to a flow control component for adjusting the water flow in the valve body, the flow control component includes a fixed frame connected to the valve body, the valve plate is slidably connected in the fixed frame, one side of the fixed frame is connected to a mounting seat, a driving screw is rotatably connected to the mounting seat, a pressure plate is threadedly connected to the driving screw, a second connecting frame is slidably connected to the fixed frame, one end of the second connecting frame extends into the fixed frame and is connected to the valve plate, a compression spring is connected to the bottom of the second connecting frame, and the other end of the compression spring is connected to the fixed frame.

[0010] Furthermore, the valve body is connected to a mounting frame, the driving gear and the transmission rack are both arranged in the mounting frame, the transmission rack is connected to a first guide block, the first guide block is slidably connected in the mounting frame, and a slide groove for the first guide block to slide is opened in the mounting frame.

[0011] Furthermore, one end of one of the transmission racks is connected to a connecting piece, one end of the connecting piece extends to the outside of the mounting frame and is connected to a second sealing plate, the valve body is connected to a second conveying channel, a connecting channel is provided in the second conveying channel, the second sealing plate is slidably connected in the second conveying channel, and the bottom of the second conveying channel is detachably connected to a liquid medicine recovery box, and as the second sealing plate moves, the waste liquid in the valve body enters the liquid medicine recovery box.

[0012] Furthermore, a fixing bar is connected to the valve body, a second guide block is connected to the fixing bar, and the other end of the second guide block is connected to the connecting rack.

[0013] Furthermore, a limiting rod is connected to the mounting seat, the pressing plate is slidably connected to the limiting rod, and a sliding opening is provided on the pressing plate for the limiting rod to slide.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By storing the anti-corrosion liquid in the liquid storage box in advance, the first sealing plate is opened to allow the anti-corrosion liquid to fall into the valve body through the first delivery channel. During the falling process, the liquid can drive the rotating impeller and the stirring frame to rotate, so that the anti-corrosion liquid is evenly coated on the inner wall of the valve body to form a protective film, thereby effectively preventing the erosion of seawater. This setting regularly performs anti-corrosion on the inside of the valve body, and the anti-corrosion effect of the inside of the valve body will not decrease with the increase of use time. Compared with the anti-corrosion method of the anti-corrosion coating, the use time is longer;

[0016] 2. When the driving gear is rotated, the transmission racks meshing on both sides of the driving gear can move relatively. During this process, one of the transmission racks opens the first delivery channel for the anti-corrosion liquid to enter the valve body, and the other transmission rack drives the valve plate to move downward to block the water inlet to prevent seawater from entering the valve body. This setting can prevent the anti-corrosion liquid from being diluted by seawater during the coating process, further improving the anti-corrosion effect. At the same time, due to the crank rotation method of the sliding seat and the connecting strip, the anti-corrosion component can regularly deliver the anti-corrosion liquid;

[0017] 3. Start the drive motor to rotate and drive the turntable to rotate synchronously, and drive the connecting bar to slide back and forth vertically. During the vertical reciprocating sliding process, the connecting rack can pull the driven gear to rotate. As the driven gear rotates, the driving gear can rotate synchronously, thereby driving the two transmission racks to rotate, and then controlling the valve plate and the first sealing plate to achieve the goal that when the anti-corrosion liquid enters the valve body, seawater cannot enter the valve body. This setting can control the frequency of anti-corrosion liquid spraying at a fixed time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a cross-sectional view of the present invention;

[0020] Figure 3 It is a rear view of the present invention;

[0021] Figure 4 for Figure 2 A magnified view of the structure at center A;

[0022] Figure 5 for Figure 3 A magnified view of the structure at B in the middle;

[0023] Figure 6 for Figure 3 A magnified view of the structure at C in the middle;

[0024] Figure 7 for Figure 3 Enlarged view of the structure at D in the middle.

[0025] In the figure: 1, valve body; 2, valve plate; 300, anti-corrosion component; 301, liquid medicine storage box; 302, first delivery channel; 303, first blocking plate; 304, rotating impeller; 305, stirring frame; 400, trigger component; 401, driving gear; 402, transmission rack; 403, slider; 404, first connecting frame; 500, driving component; 501, turntable; 502, sliding seat; 503, connecting bar; 504, connecting rack; 505, driven gear; 506, driving motor; 600, flow control assembly; 601, mounting seat; 602, driving screw; 603, pressure plate; 604, second connecting frame; 605, compression spring; 7, liquid medicine recovery box; 8, connecting piece; 9, second conveying channel; 10, second blocking plate; 11, first guide block; 12, fixing strip; 13, second guide block; 14, limiting rod; 15, mounting frame; 16, synchronous belt; 17, synchronous wheel. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-7 The present invention provides a technical solution: comprising a valve body 1 and a valve plate 2 slidably arranged in the valve body 1 to control the flow in the valve body 1, the valve body 1 is provided with an anti-corrosion component 300 for providing an anti-corrosion effect on the inner wall of the valve body 1, a trigger component 400 for triggering the anti-corrosion component 300, and a driving component 500 for driving the trigger component 400 to trigger the trigger component 400 in a timed manner;

[0028] In the present invention, it can be used in a ship's desalination device to convert seawater into fresh water and supply it to the ship's daily life. In this process, the valve is usually set in the hull, and the seawater is transported through the valve and pipeline and enters the purification equipment for purification before being used by the crew or passengers. At the same time, as necessary, this system is equipped with transportation pipelines, water purification equipment, seawater extraction equipment and other facilities and structures for purifying water quality, but since they are not related to the technical problem to be solved by the present invention, they are not drawn.

[0029] In order to facilitate effective anti-corrosion protection of the inner wall of the valve body 1, it is necessary to further disclose the internal structure of the anti-corrosion component 300, please refer to Figure 2 The anti-corrosion component 300 includes a medicine liquid storage box 301 arranged above the valve body 1, and the bottom of the medicine liquid storage box 301 is connected to a first conveying channel 302 that is interconnected. A first blocking plate 303 is slidably provided in the first conveying channel 302. As the first blocking plate 303 slides, the medicine in the medicine liquid storage box 301 enters the valve body 1; a rotating impeller 304 is rotatably connected to the valve body 1, and a stirring frame 305 rotatably arranged in the valve body 1 is connected to the rotating impeller 304, and the rotating impeller 304 and the stirring frame 305 rotate as the medicine liquid falls.

[0030] It should be noted that the rotating impeller 304 is located directly below the liquid outlet of the first delivery channel 302. The blades of the rotating impeller 304 are inclined. When the liquid medicine in the first delivery channel 302 falls, the rotating impeller 304 can be driven to rotate. The stirring frame 305 is composed of a rotating shaft and a cross-shaped stirring blade.

[0031] During specific implementation, anti-corrosion liquid can be stored in advance in the liquid storage box 301. By opening the first blocking plate 303, the anti-corrosion liquid can fall into the valve body 1 through the first delivery channel 302. During the falling process, the liquid can drive the rotating impeller 304 and the stirring frame 305 to rotate, so that the anti-corrosion liquid is evenly applied to the inner wall of the valve body 1 to form a protective film, thereby effectively preventing the erosion of seawater.

[0032] Preferably, a quantitative unloading mechanism consisting of an installed rack and a half gear can be set in the medicine liquid storage box 301, so that the medicine liquid in the medicine liquid storage box 301 can be quantitatively transported to the valve body 1. While ensuring that the medicine liquid is transported to the valve body 1, the quantitative transportation of the medicine liquid in the valve body 1 can be ensured for a long time.

[0033] Further, one end of one of the transmission racks 402 is connected to a connecting piece 8, one end of the connecting piece 8 extends to the outside of the mounting frame 15 and is connected to a second blocking plate 10, a second delivery channel 9 is connected to the valve body 1, a connecting channel is provided in the second delivery channel 9, the second blocking plate 10 is slidably connected in the second delivery channel 9, and a liquid medicine recovery box 7 is detachably connected to the bottom of the second delivery channel 9, and as the second blocking plate 10 moves, the waste liquid in the valve body 1 enters the liquid medicine recovery box 7;

[0034] In order to facilitate the recovery of the drug liquid, a drug liquid recovery box 7 is set up to recover the drug liquid for secondary use, and the second conveying channel 9 is set below the valve body 1, so that the anti-corrosion drug liquid in the valve body 1 can enter the drug liquid recovery box 7 by utilizing the principle of gravity.

[0035] As a preferred solution of this embodiment, the liquid medicine recovery box 7 and the liquid medicine storage box 301 can be connected through a liquid medicine purification device, so that after collecting the waste liquid medicine, the liquid medicine recovery box 7 is purified and introduced into the liquid medicine storage box 301 for secondary use.

[0036] In order to prevent the anti-corrosion liquid from being diluted by seawater during the process of introducing the anti-corrosion liquid into the liquid storage tank 301, it is necessary to prevent seawater from entering the valve body 1 during the process of introducing the anti-corrosion liquid, and for this purpose, a trigger assembly 400 is designed;

[0037] Please continue to refer to Figures 2 to 4 The trigger assembly 400 includes a driving gear 401 rotatably connected to the top of the valve body 1, and two transmission racks 402 are meshed and connected to the driving gear 401. The two transmission racks 402 are symmetrical with each other around the horizontal midline of the driving gear 401, and one end of one of the transmission racks 402 is connected to the first blocking plate 303; one end of the other transmission rack 402 is connected to a slider 403, and a first connecting frame 404 is slidably connected to the bottom of the slider 403. The first connecting frame 404 moves vertically with the horizontal sliding of the slider 403, and the other side of the first connecting frame 404 is connected to the valve plate 2.

[0038] During specific implementation, when the driving gear 401 is rotated, the transmission racks 402 meshingly connected on both sides of the driving gear 401 can move relatively. During this process, one of the transmission racks 402 drives the first blocking plate 303 to slide, opening the first conveying channel 302 to allow the anti-corrosion liquid in the liquid storage box 301 to enter the valve body 1, and the other transmission rack 402 will drive the slider 403 to move horizontally, so that the slider 403 resists the first connecting frame 404 and moves downward, and drives the valve plate 2 to move downward to block the water inlet, thereby preventing seawater from entering the valve body 1.

[0039] Preferably, a roller is connected to one end of the first connecting frame 404 that contacts the slider 403 , so as to reduce the friction between the first connecting frame 404 and the slider 403 and facilitate the first connecting frame 404 to slide vertically downward while being contacted by the slider 403 .

[0040] Furthermore, in order to facilitate the installation of the driving gear 401 and the transmission rack 402, the valve body 1 is connected with a mounting frame 15, the driving gear 401 and the transmission rack 402 are both arranged in the mounting frame 15, the transmission rack 402 is connected with a first guide block 11, the first guide block 11 is slidably connected in the mounting frame 15, and a slide groove for the first guide block 11 to slide is provided in the mounting frame 15;

[0041] The provided installation frame 15 facilitates the installation of the driving gear 401 and the transmission rack 402, and the provided first guide block 11 can limit and guide the sliding of the transmission rack 402, further improving the stability of the transmission rack 402 during the sliding process.

[0042] It should be noted that reverse osmosis or distillation is often involved in the process of water purification, and continuous water delivery is not required in this process. Therefore, the valve body 1 can intermittently deliver water by controlling the valve plate 2, which will not affect the ship's desalination device.

[0043] In order to facilitate the control of the anti-corrosion component 300 to deliver the anti-corrosion liquid to the valve body 1 at a fixed time, it is necessary to further disclose the structure of the driving component 500. Please continue to refer to Figure 5 and Figure 6 A driving assembly 500 is also provided on one side of the valve body 1. The driving assembly 500 includes a turntable 501 rotatably connected to one side of the valve body 1. The turntable 501 is connected to a sliding seat 502. The sliding seat 502 is slidably connected to a connecting bar 503. The connecting bar 503 is provided with a sliding groove adapted to the sliding seat 502. The connecting bar 503 slides vertically as the turntable 501 rotates. One end of the connecting bar 503 is connected to a connecting rack 504. One side of the connecting rack 504 is meshedly connected to a driven gear 505. The driving gear 401 rotates synchronously with the driven gear 505. A driving motor 506 for driving the turntable 501 to rotate is connected to the valve body 1.

[0044] Furthermore, the turntable 501 and the driving motor 506 are both connected to driving shafts, both driving shafts are connected to synchronous wheels 17 , and a synchronous belt 16 is connected between the two synchronous wheels 17 .

[0045] During the specific implementation, the driving motor 506 is started to rotate and drive the turntable 501 to rotate synchronously. During the synchronous rotation, the turntable 501 can drive the sliding seat 502 to rotate, so that the sliding seat 502 slides in the sliding groove opened by the connecting bar 503. During this process, the connecting bar 503 can be driven to slide vertically back and forth. During the vertical reciprocating sliding, the connecting bar 503 can make the connecting rack 504 pull the driven gear 505 to rotate. With the rotation of the driven gear 505, the driving gear 401 can rotate synchronously, thereby driving the two transmission racks 402 to rotate, and then controlling the valve plate 2 and the first sealing plate 303, so as to achieve the effect that when the anti-corrosion liquid enters the valve body 1, the seawater cannot enter the valve body 1. At the same time, due to the crank rotation mode of the sliding seat 502 and the connecting bar 503, the anti-corrosion component 300 can regularly deliver the anti-corrosion liquid.

[0046] Preferably, the driven gear 505 of different diameters can be replaced to make the driving gear 401 produce different rotation speeds, thereby controlling the start and stop frequencies of the control valve plate 2 and the first blocking plate 303 and controlling the duration of the antiseptic liquid entering.

[0047] In order to facilitate the guiding of the sliding of the connecting rack 504, a fixing bar 12 is connected to the valve body 1, and a second guide block 13 is connected to the fixing bar 12. The other end of the second guide block 13 is connected to the connecting rack 504. The fixing bar 12 and the second guide block 13 can be used together to make the sliding of the connecting rack 504 more stable.

[0048] To facilitate manual control of valve body 1, please refer to Figure 7 A flow control component 600 for adjusting the water flow in the valve body 1 is connected to the valve body 1, and the flow control component 600 includes a fixed frame connected to the valve body 1, and the valve plate 2 is slidably connected in the fixed frame. A mounting seat 601 is connected to one side of the fixed frame, and a driving screw rod 602 is rotatably connected to the mounting seat 601. A pressure plate 603 is threadedly connected to the driving screw rod 602, and a second connecting frame 604 is slidably connected to the fixed frame. One end of the second connecting frame 604 extends into the fixed frame and is connected to the valve plate 2, and a compression spring 605 is connected to the bottom of the second connecting frame 604, and the other end of the compression spring 605 is connected to the fixed frame.

[0049] During specific implementation, the driving screw 602 is rotated to make the pressure plate 603 threadedly connected on the driving screw 602 move vertically downward and press the second connecting frame 604 so that the second connecting frame 604 drives the valve plate 2 to move vertically downward to block the water inlet of the valve body 1, thereby completing the effect of the valve body 1 retaining water, and the set compression spring 605 can be used in conjunction with the slider 403 to control the rebound of the valve plate 2.

[0050] To facilitate guiding the pressure plate 603, a limiting rod 14 is connected to the mounting seat 601, and the pressure plate 603 is slidably connected to the limiting rod 14. A sliding opening is provided on the pressure plate 603 for the limiting rod 14 to slide. The limiting rod 14 can limit and guide the sliding of the pressure plate 603, thereby improving the stability of the pressure plate 603 during the sliding process.

[0051] Working principle: When it is necessary to provide anti-corrosion effect to the valve body 1:

[0052] By storing the anti-corrosion liquid in the liquid storage box 301 in advance, the first blocking plate 303 is opened to allow the anti-corrosion liquid to fall into the valve body 1 through the first delivery channel 302. During the falling process, the liquid can drive the rotating impeller 304 and the stirring frame 305 to rotate, so that the anti-corrosion liquid is evenly applied to the inner wall of the valve body 1 to form a protective film, thereby effectively preventing the erosion of seawater;

[0053] The driving motor 506 is started to rotate to drive the rotating disk 501 to rotate synchronously. During the synchronous rotation, the rotating disk 501 can drive the sliding seat 502 to rotate, so that the sliding seat 502 slides in the slide groove provided by the connecting bar 503. During this process, the connecting bar 503 can be driven to slide vertically back and forth. During the vertical reciprocating sliding process, the connecting bar 503 can make the connecting rack 504 pull the driven gear 505 to rotate. With the rotation of the driven gear 505, the driving gear 401 can rotate synchronously, thereby driving the two transmission racks 402 to rotate, and then controlling the valve plate 2 and the first blocking plate 303, so that the anti-corrosion liquid enters the valve body 1 while the seawater cannot enter the valve body 1. At the same time, due to the crank rotation of the sliding seat 502 and the connecting bar 503, the anti-corrosion component 300 can regularly deliver the anti-corrosion liquid.

[0054] When the driving gear 401 is rotated, the transmission racks 402 meshingly connected on both sides of the driving gear 401 can move relatively. During this process, one of the transmission racks 402 drives the first blocking plate 303 to slide, opens the first conveying channel 302 to allow the anti-corrosion liquid in the liquid storage box 301 to enter the valve body 1, and the other transmission rack 402 drives the slider 403 to move horizontally, so that the slider 403 contacts the first connecting frame 404 and moves downward, and drives the valve plate 2 to move downward to block the water inlet, thereby preventing seawater from entering the valve body 1.

Claims

1. A corrosion-resistant marine valve, comprising a valve body (1) and a valve plate (2) slidably arranged in the valve body (1) to control the flow in the valve body (1), characterized in that: The valve body (1) is provided with an anti-corrosion component (300), the anti-corrosion component (300) comprising a liquid medicine storage box (301) arranged above the valve body (1), the bottom of the liquid medicine storage box (301) is connected to a first conveying channel (302) which is interconnected, a first blocking plate (303) is slidably provided in the first conveying channel (302), and as the first blocking plate (303) slides, the liquid medicine in the liquid medicine storage box (301) enters the valve body (1); A rotating impeller (304) is rotatably connected inside the valve body (1), and a stirring frame (305) rotatably arranged inside the valve body (1) is connected to the rotating impeller (304), and the rotating impeller (304) and the stirring frame (305) rotate as the liquid medicine falls; It also includes a trigger assembly (400), wherein the trigger assembly (400) includes a driving gear (401) rotatably connected to the top of the valve body (1), and two transmission racks (402) are meshingly connected to the driving gear (401), and the two transmission racks (402) are symmetrical to each other with the horizontal center line of the driving gear (401) as the center, and one end of one of the transmission racks (402) is connected to the first blocking plate (303); One end of the other transmission rack (402) is connected to a slider (403), and a first connecting frame (404) is slidably connected below the slider (403). The first connecting frame (404) moves vertically along with the horizontal sliding of the slider (403), and the other side of the first connecting frame (404) is connected to the valve plate (2); A driving assembly (500) is also provided on one side of the valve body (1). The driving assembly (500) includes a turntable (501) rotatably connected to one side of the valve body (1). The turntable (501) is connected to a sliding seat (502). A connecting bar (503) is slidably connected to the sliding seat (502). The connecting bar (503) is provided with a sliding groove that matches the sliding seat (502). The connecting bar (503) slides vertically as the turntable (501) rotates. One end of the connecting bar (503) is connected to a connecting rack (504). One side of the connecting rack (504) is meshedly connected to a driven gear (505). The driving gear (401) rotates synchronously with the driven gear (505). The valve body (1) is connected to a driving motor (506) that drives the turntable (501) to rotate.

2. A corrosion-resistant marine valve according to claim 1, characterized in that: The valve body (1) is connected to a flow control component (600) for adjusting the water flow in the valve body (1). The flow control component (600) comprises a fixed frame connected to the valve body (1). The valve plate (2) is slidably connected in the fixed frame. A mounting seat (601) is connected to one side of the fixed frame. A driving screw rod (602) is rotatably connected to the mounting seat (601). A pressure plate (603) is threadedly connected to the driving screw rod (602). A second connecting frame (604) is slidably connected to the fixed frame. One end of the second connecting frame (604) extends into the fixed frame and is connected to the valve plate (2). A compression spring (605) is connected to the bottom of the second connecting frame (604). The other end of the compression spring (605) is connected to the fixed frame.

3. A corrosion-resistant marine valve according to claim 1, characterized in that: The valve body (1) is connected to a mounting frame (15), the driving gear (401) and the transmission rack (402) are both arranged in the mounting frame (15), the transmission rack (402) is connected to a first guide block (11), the first guide block (11) is slidably connected in the mounting frame (15), and a slide groove for the first guide block (11) to slide is provided in the mounting frame (15).

4. A corrosion-resistant marine valve according to claim 3, characterized in that: One end of one of the transmission racks (402) is connected to a connecting piece (8), one end of the connecting piece (8) extends to the outside of the mounting frame (15) and is connected to a second blocking plate (10), the valve body (1) is connected to a second conveying channel (9), a connecting channel is provided in the second conveying channel (9), the second blocking plate (10) is slidably connected in the second conveying channel (9), and the bottom of the second conveying channel (9) is detachably connected to a liquid medicine recovery box (7), and as the second blocking plate (10) moves, waste liquid in the valve body (1) enters the liquid medicine recovery box (7).

5. A corrosion-resistant marine valve according to claim 1, characterized in that: The valve body (1) is connected to a fixing bar (12), the fixing bar (12) is connected to a second guide block (13), and the other end of the second guide block (13) is connected to a connecting rack (504).

6. A corrosion-resistant marine valve according to claim 2, characterized in that: The mounting seat (601) is connected to a limit rod (14), the pressing plate (603) is slidably connected to the limit rod (14), and the pressing plate (603) is provided with a sliding opening for the limit rod (14) to slide.

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