Marine seawater check valve

Abstract

The utility model discloses a marine seawater check valve which comprises a valve pipe, and the valve pipe is installed between a water inlet pipe and a water outlet pipe through a first screw and a first nut. The first fixing ring is fixedly installed in the valve pipe, and the side face of the first fixing ring is fixedly connected with a first fixing column; a first mounting lug is fixedly mounted on the side face of the first mounting plate, and the first mounting lug is mounted at the end of the first fixing column through a first screw; the sliding column is slidably mounted on the side face of the first mounting plate, and the outer side of the sliding column is sleeved with a spring; the pressing plate is fixedly installed at the end of the sliding column, and a valve plate is fixedly installed on the side face of the pressing plate. The damaged spring can be replaced conveniently, impurities in seawater can be filtered through the filter screen, the valve pipe can be prevented from being blocked, meanwhile, the impurities on the filter screen can be cleaned through the cleaning brush, and therefore the filtering effect of the filter screen can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the check valve field, concretely relates to a marine seawater check valve. BACKGROUND

[0002] The ship needs to consume a large amount of fresh water for boiler water or crew drinking every day, so large ships are usually equipped with water making machines, which extract fresh water by the principle of seawater evaporation and condensation to meet daily needs, and the check valve is usually installed on the seawater pipeline to prevent seawater backflow. For example, patent application No. 201920993463.0 discloses a check valve that can prevent liquid backflow, which includes a valve body, a hollow cavity is provided in the valve body, a liquid inlet pipe and a liquid outlet pipe are respectively penetrated and fixedly connected at both ends of the valve body, a first circular ring block is provided at one end of the hollow cavity close to the liquid inlet pipe, the side wall of the first circular ring block is fixedly connected with the inner wall of the hollow cavity, a valve is provided in the first circular ring block, the side wall of the valve is slidingly connected with the inner wall of the first circular ring block and abuts, a pressure resisting baffle is fixedly connected at one end of the valve away from the liquid inlet pipe, a second circular ring block is fixedly connected in the hollow cavity through a supporting mechanism, and an elastic connecting mechanism is provided between the pressure resisting baffle and the second circular ring block. It has the following advantages: the pressure resisting baffle can be quickly pressed against the sealing ring under the elastic force of the return spring, the valve is quickly inserted into the first circular ring block, thereby preventing liquid backflow and avoiding damage to equipment or pollution.

[0003] However, the patent still has the following defects: if the return spring is damaged during use, it is difficult to replace, which will affect the closing of the valve and use. UTILITY MODEL CONTENTS

[0004] In view of the above defects or shortcomings in the prior art, it is desirable to provide a marine seawater check valve that facilitates replacement of damaged springs and filters out debris in seawater, preventing blockage of the valve pipe and cleaning the debris on the filter screen with a cleaning brush, thereby ensuring the filtering effect of the filter screen.

[0005] According to the technical scheme provided by the embodiment of the application, a marine seawater check valve is provided, which comprises a valve pipe, the valve pipe is installed between a water inlet pipe and a water outlet pipe through a first screw rod and a first nut, first flange plates are fixedly installed at the ends of the valve pipe, the water inlet pipe and the water outlet pipe, first sealing rings are arranged between adjacent first flange plates, a first fixing ring is fixedly installed in the valve pipe, first fixing columns are fixedly connected to the side surface of the first fixing ring, a first mounting plate is fixedly installed on the side surface of the first fixing column, first mounting ears are fixedly installed on the side surface of the first mounting plate, the first mounting ears are installed on the end of the first fixing column through first screws, the end of the first fixing column is provided with a first screw groove matched with the first screw, the side surface of the first mounting ear is provided with a first opening hole corresponding to the first screw, a sliding column is slidingly installed on the side surface of the first mounting plate, a spring is sleeved on the outer side of the sliding column, the side surface of the first mounting plate is provided with a sliding through hole corresponding to the sliding column, the sliding column passes through the sliding through hole, a pressing plate is fixedly installed on the end of the sliding column, a valve plate is fixedly installed on the side surface of the pressing plate, the spring is located between the first mounting plate and the pressing plate, a second sealing ring is bonded to the side surface of the pressing plate, the second sealing ring is located between the pressing plate and the first fixing ring, the outer wall of the valve plate is in contact with the inner wall of the first fixing ring, an installation pipe is installed above the water inlet pipe through a second screw rod and a second nut, a support is fixedly connected to the outer side of the installation pipe, a small motor is arranged above the support, a butt joint pipe is fixedly connected to the upper side of the water inlet pipe, second flange plates are fixedly installed at the ends of the butt joint pipe and the installation pipe, third sealing rings are arranged between adjacent second flange plates, a first rotating shaft is connected to the output shaft of the small motor through a shaft coupling, a first bevel gear is fixedly installed at the bottom end of the first rotating shaft, the first rotating shaft is connected to the installation pipe through a rotary sealing ring, a second fixing ring is fixedly installed in the water inlet pipe, a second fixing column is fixedly connected to one side of the second fixing ring, a second mounting plate is fixedly installed on the side surface of the second fixing column, second mounting ears are fixedly installed on the side surface of the second mounting plate, the second mounting ears are installed on the end of the second fixing column through second screws, the end of the second fixing column is provided with a second screw groove matched with the second screw, the side surface of the second mounting ear is provided with a second opening hole corresponding to the second screw, a second rotating shaft is connected to the second mounting plate through a bearing, a second bevel gear is fixedly installed on the outer side of the second rotating shaft, the second bevel gear is engaged with the first bevel gear, a cleaning brush is installed at the end of the second rotating shaft through a third screw rod and a third nut, a first connecting block is fixedly connected to the outer side of the second rotating shaft, a second connecting block is fixedly connected to the side surface of the cleaning brush.The first connecting block is located between adjacent second connecting blocks, and the side surfaces of the first connecting block and the second connecting block are each provided with a third opening hole corresponding to the third screw rod, the bristles of the cleaning brush are in contact with the filter screen, the filter screen is installed on the other side of the second fixed ring through a countersunk screw, a blowdown pipe is fixedly connected below the water inlet pipe, a cover is screwed on the bottom end of the blowdown pipe, an outflow pipe and a backflow pipe are both fixedly connected above the water inlet pipe, a heat conduction plate is fixedly installed above the support, a butt joint pipe is fixedly connected below the heat conduction plate, the left side between the butt joint pipe and the backflow pipe and the right side between the butt joint pipe and the outflow pipe are both connected through a sleeve pipe, a small motor is fixedly installed above the heat conduction plate, the surfaces of the heat conduction plate and the support are each provided with a fourth opening hole corresponding to the output shaft of the small motor, the heat conduction plate is internally provided with a flow-through cavity, and the flow-through cavity is in communication with the butt joint pipe.

[0006] In summary, the beneficial effects of the present application are as follows:

[0007] 1. By arranging the first fixed column, the first mounting plate and the first mounting ear, when the spring is damaged during use, the damaged spring can be conveniently replaced.

[0008] 2. By arranging the mounting pipe, the support, the small motor, the first rotating shaft, the first bevel gear, the second fixed ring, the second fixed column, the second mounting plate, the second mounting ear, the second rotating shaft, the second bevel gear, the cleaning brush, the first connecting block, the second connecting block, the filter screen, the blowdown pipe and the cover, the filter screen can filter impurities in seawater, can prevent the valve pipe from being blocked, and the cleaning brush can clean impurities on the filter screen, so that the filtering effect of the filter screen can be ensured.

[0009] 3. By arranging the outflow pipe, the backflow pipe, the heat conduction plate and the butt joint pipe, heat dissipation of the small motor is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0010] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0011] Figure 1 It is a structural schematic view of the present application;

[0012] Figure 2 It is a structural schematic view of the valve pipe, the first fixed ring, the first fixed column, the first mounting plate, the first mounting ear, the sliding column, the spring and the pressing plate connection of the present application;

[0013] Figure 3 It is a side view structural schematic view of the first fixed ring and the first fixed column connection of the present application;

[0014] Figure 4 It is the structure schematic view of the connection between the slide column, the pressing plate and the valve plate of the utility model;

[0015] Figure 5 It is the structure schematic view of the connection between the first mounting plate and the first mounting lug of the utility model;

[0016] Figure 6 It is the structure schematic view of the connection between the water inlet pipe, the mounting pipe, the support, the small motor, the first rotating shaft, the first bevel gear, the second fixed ring, the second fixed column, the second mounting plate, the second mounting lug, the second rotating shaft, the second bevel gear, the cleaning brush, the filter screen, the blowdown pipe, the cover, the outflow pipe, the backflow pipe, the heat conduction plate and the butt joint pipe of the utility model;

[0017] Figure 7 It is the structure schematic view of the connection between the second fixed ring, the second fixed column and the filter screen of the utility model;

[0018] Figure 8 It is the structure schematic view of the connection between the second mounting plate, the second mounting lug, the second rotating shaft and the second bevel gear of the utility model;

[0019] Figure 9 It is the structure schematic view of the connection between the second rotating shaft, the cleaning brush, the first connecting block and the second connecting block of the utility model.

[0020] Reference signs in the drawings: 1, valve pipe; 2, water inlet pipe; 3, water outlet pipe; 4, first fixed ring; 5, first fixed column; 6, first mounting plate; 7, first mounting lug; 8, slide column; 9, spring; 10, pressing plate; 11, valve plate; 12, mounting pipe; 13, support; 14, small motor; 15, first rotating shaft; 16, first bevel gear; 17, second fixed ring; 18, second fixed column; 19, second mounting plate; 20, second mounting lug; 21, second rotating shaft; 22, second bevel gear; 23, cleaning brush; 24, first connecting block; 25, second connecting block; 26, filter screen; 27, blowdown pipe; 28, cover; 29, outflow pipe; 30, backflow pipe; 31, heat conduction plate; 32, butt joint pipe. DETAILED DESCRIPTION

[0021] The application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for convenience of description.

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 , a marine seawater check valve, comprising a valve pipe 1, the valve pipe 1 is installed between the water inlet pipe 2 and the water outlet pipe 3 through the first screw rod and the first nut; The first fixed ring 4 is fixedly installed in the inside of the valve pipe 1, the side surface of the first fixed ring 4 is fixedly connected with the first fixed column 5; The side surface of the first mounting plate 6 is fixedly installed with the first mounting lug 7, and the first mounting lug 7 is installed at the end of the first fixed column 5 through the first screw; The slide column 8 is slidingly installed on the side surface of the first mounting plate 6, and the outer side of the slide column 8 is sleeved with the spring 9; The pressing plate 10 is fixedly installed at the end of the slide column 8, and the side surface of the pressing plate 10 is fixedly installed with the valve plate 11; The mounting pipe 12 is installed above the water inlet pipe 2 through the second screw rod and the second nut, the outer side of the mounting pipe 12 is fixedly connected with the support 13, and the upper side of the support 13 is provided with a small motor 14; The first rotating shaft 15 is connected with the output shaft of the small motor 14 through the shaft coupling, and the bottom end of the first rotating shaft 15 is fixedly installed with the first bevel gear 16; The first fixed ring 4 is fixedly installed in the inside of the water inlet pipe 2, and the side of the second fixed column 18 is fixedly connected with the second fixed column 18; The side surface of the second mounting plate 19 is fixedly installed with the second mounting lug 20, and the second mounting lug 20 is installed at the end of the second fixed column 18 through the second screw; The second rotating shaft 21 is connected with the second mounting plate 19 through the bearing, and the outer side of the second rotating shaft 21 is fixedly installed with the second bevel gear 22; The cleaning brush 23 is installed at the end of the second rotating shaft 21 through the third screw rod and the third nut, the outer side of the second rotating shaft 21 is fixedly connected with the first connecting block 24, and the side surface of the cleaning brush 23 is fixedly connected with the second connecting block 25; The filter screen 26 is installed on the other side of the second fixed ring 17 through the countersunk screw; The blowdown pipe 27 is fixedly connected below the water inlet pipe 2, and the bottom end of the blowdown pipe 27 is screwed with the cover 28; The outflow pipe 29 and the backflow pipe 30 are both fixedly connected above the water inlet pipe 2; The heat conducting plate 31 is fixedly installed above the support 13, the lower side of the heat conducting plate 31 is fixedly connected with the butt joint pipe 32, and the left side between the butt joint pipe 32 and the backflow pipe 30 and the right side between the butt joint pipe 32 and the outflow pipe 29 are all connected through the sleeve pipe.

[0024] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 indicated, the end of the valve pipe 1, the water inlet pipe 2 and the water outlet pipe 3 are fixedly installed with first flange plates, first sealing rings are padded between adjacent first flange plates, the end of the first fixed column 5 is provided with a first screw groove matched with the first screw, the side of the first mounting ear 7 is provided with a first opening hole corresponding to the first screw, facilitating the installation of the first screw. The side of the first mounting plate 6 is provided with a sliding through hole corresponding to the slide column 8, facilitating the sliding of the slide column 8, the slide column 8 passes through the sliding through hole, and the spring 9 is located between the first mounting plate 6 and the pressing plate 10.

[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 indicated, the side of the pressing plate 10 is bonded with a second sealing ring, the second sealing ring is located between the pressing plate 10 and the first fixed ring 4, and the outer wall of the valve plate 11 is in contact with the inner wall of the first fixed ring 4. The upper part of the water inlet pipe 2 is fixedly connected with a butt joint pipe, facilitating the installation of the installation pipe 12, and the end of the butt joint pipe and the installation pipe 12 is fixedly installed with a second flange plate, and a third sealing ring is padded between adjacent second flange plates.

[0026] As Figure 1 , Figure 6 , Figure 7 , Figure 8 and Figure 9 indicated, the first rotating shaft 15 is connected with the installation pipe 12 through a rotary sealing ring, the end of the second fixed column 18 is provided with a second screw groove matched with the second screw, and the side of the second mounting ear 20 is provided with a second opening hole corresponding to the second screw, facilitating the installation of the second screw. The second bevel gear 22 is engaged with the first bevel gear 16, the first connecting block 24 is located between adjacent second connecting blocks 25, the side of the first connecting block 24 and the second connecting block 25 is provided with a third opening hole corresponding to the third screw rod, facilitating the installation of the third screw rod, and the bristles of the cleaning brush 23 are in contact with the filter screen 26, so that the cleaning brush 23 can clean the sundries on the filter screen 26.

[0027] As Figure 1 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the small motor 14 is fixedly installed above the heat-conducting plate 31, the surface of the heat-conducting plate 31 and the support 13 is provided with a fourth opening corresponding to the output shaft of the small motor 14, facilitating the passing of the output shaft of the small motor 14, the inside of the heat-conducting plate 31 is provided with a flow cavity, and the flow cavity is communicated with the butt joint pipe 32.

[0028] In use: first, install the product on the seawater pipeline, and power on the small motor 14, seawater will first flow into the inlet pipe 2, and the impurities in the seawater will be filtered by the filter screen 26, which can prevent the valve pipe 1 from being blocked, while the filter screen 26 is filtering, the small motor 14 can drive the first rotating shaft 15 and the first bevel gear 16 to rotate, the first bevel gear 16 can drive the second bevel gear 22 and the second rotating shaft 21 to rotate, and the second rotating shaft 21 can drive the cleaning brush 23 to rotate, so that the cleaning brush 23 can clean the impurities on the filter screen 26, thereby ensuring the filtering effect of the filter screen 26, and part of the seawater in the inlet pipe 2 will flow through the outlet pipe 29 and the right butt joint pipe 32, into the flow cavity of the heat-conducting plate 31, and then flow back into the inlet pipe 2 through the left butt joint pipe 32 and the backflow pipe 30, thereby taking away the heat transferred by the small motor 14 to the heat-conducting plate 31, thereby facilitating the heat dissipation of the small motor 14, at the same time, after unscrewing the cover 28, the impurities in the inlet pipe 2 can be discharged through the drain pipe 27, and the filtered seawater will enter the valve pipe 1, when the pressure of the seawater is greater than the spring force of the spring 9 and the sum of various resistances, the valve plate 11 will be opened, and the seawater will flow into the outlet pipe 3 through the gap between the pressure plate 10 and the inner wall of the valve pipe 1, when the pressure of the seawater is less than the spring force of the spring 9 and the sum of various resistances, the spring 9 will drive the pressure plate 10 and the second sealing ring to press on the first fixed ring 4, so that the valve plate 11 is inserted into the first fixed ring 4, thereby preventing seawater from flowing back, when the spring 9 is damaged during use, the first screw rod, the first nut and the valve pipe 1 at the corresponding position are disassembled, then the first screw, the first mounting ear 7 and the first mounting plate 6 are disassembled, and the damaged spring 9 can be replaced, thereby facilitating the replacement of the damaged spring 9, thereby ensuring the closing of the valve plate 11, when the filter screen 26 is damaged during use, the first screw rod, the first nut and the inlet pipe 2 at the corresponding position are disassembled, then the sink screw is disassembled, and the damaged filter screen 26 can be replaced, when the cleaning brush 23 is damaged during use, the second screw, the second mounting ear 20 and the second mounting plate 19 are disassembled, then the third screw rod and the third nut are disassembled, and the damaged cleaning brush 23 can be replaced, which is very practical.

[0029] The above description is only the preferred embodiment of the application and the scheme of the applied technical principles. Meanwhile, the utility model range involved in the application is not limited to the technical scheme formed by the specific combination of the above technical features, and should also cover other technical schemes formed by the combination of the above technical features or equivalent features without departing from the utility model concept. For example, the technical scheme formed by replacing the above features with the technical features disclosed in the application (but not limited to) having similar functions.

Claims

1. A marine sea water check valve characterized by: Including valve pipe (1), the valve pipe (1) is installed between water inlet pipe (2) and water outlet pipe (3) by first screw rod and first nut; First fixed ring (4), the first fixed ring (4) is fixedly installed in the inside of the valve pipe (1), and the side surface of the first fixed ring (4) is fixedly connected with the first fixed column (5); First mounting plate (6), the side surface of the first mounting plate (6) is fixedly installed with the first mounting lug (7), and the first mounting lug (7) is installed at the end of the first fixed column (5) by the first screw; Slide column (8), the slide column (8) is slidingly installed on the side surface of the first mounting plate (6), and the outer side of the slide column (8) is sleeved with the spring (9); Pressing plate (10), the pressing plate (10) is fixedly installed at the end of the slide column (8), and the side surface of the pressing plate (10) is fixedly installed with the valve plate (11); Mounting pipe (12), the mounting pipe (12) is installed above the water inlet pipe (2) by the second screw rod and the second nut, the outer side of the mounting pipe (12) is fixedly connected with the support (13), and the small motor (14) is arranged above the support (13); First rotating shaft (15), the first rotating shaft (15) is connected with the output shaft of the small motor (14) through the shaft coupling, and the bottom end of the first rotating shaft (15) is fixedly installed with the first bevel gear (16); Second fixed ring (17), the first fixed ring (4) is fixedly installed in the inside of the water inlet pipe (2), and the side of the second fixed ring (17) is fixedly connected with the second fixed column (18); Second mounting plate (19), the side surface of the second mounting plate (19) is fixedly installed with the second mounting lug (20), and the second mounting lug (20) is installed at the end of the second fixed column (18) by the second screw; Second rotating shaft (21), the second rotating shaft (21) is connected with the second mounting plate (19) through the bearing, and the outer side of the second rotating shaft (21) is fixedly installed with the second bevel gear (22); Cleaning brush (23), the cleaning brush (23) is installed at the end of the second rotating shaft (21) by the third screw rod and the third nut, the outer side of the second rotating shaft (21) is fixedly connected with the first connecting block (24), and the side surface of the cleaning brush (23) is fixedly connected with the second connecting block (25); Filter screen (26), the filter screen (26) is installed on the other side of the second fixed ring (17) by the countersunk screw; Sewage pipe (27), the sewage pipe (27) is fixedly connected below the water inlet pipe (2), and the bottom end of the sewage pipe (27) is screwed with the cover (28); The outflow pipe (29) and the backflow pipe (30) are both fixedly connected above the water inlet pipe (2); Heat conduction plate (31), the heat conduction plate (31) is fixedly installed above the support (13), and the heat conduction plate (31) is fixedly connected with the butt joint pipe (32) below, and the butt joint pipe (32) is connected through the sleeve between the left side and the backflow pipe (30), and the right side and the outflow pipe (29).

2. A marine sea water check valve according to claim 1, characterised in that: The end of the valve pipe (1), the water inlet pipe (2) and the water outlet pipe (3) are fixedly installed with first flange plates, first sealing rings are padded between adjacent first flange plates, the end of the first fixed column (5) is provided with a first screw groove matched with the first screw, and the side of the first mounting lug (7) is provided with a first opening hole corresponding to the first screw.

3. A marine sea water check valve according to claim 1, characterised in that: The side of the first mounting plate (6) is provided with a sliding through hole corresponding to the slide column (8), the slide column (8) passes through the sliding through hole, and the spring (9) is located between the first mounting plate (6) and the pressing plate (10).

4. A marine sea water check valve according to claim 1, characterized in that: The side of the pressing plate (10) is bonded with a second sealing ring, the second sealing ring is located between the pressing plate (10) and the first fixed ring (4), and the outer wall of the valve plate (11) is in contact with the inner wall of the first fixed ring (4).

5. A marine sea water check valve according to claim 1, characterized in that: The upper portion of the water inlet pipe (2) is fixedly connected with a butt joint pipe, the end of the butt joint pipe and the mounting pipe (12) is fixedly installed with a second flange plate, and a third sealing ring is padded between adjacent second flange plates.

6. A marine sea water check valve according to claim 1, characterized in that: The first rotating shaft (15) is connected with the mounting pipe (12) through a rotary sealing ring, the end of the second fixed column (18) is provided with a second screw groove matched with the second screw, and the side of the second mounting lug (20) is provided with a second opening hole corresponding to the second screw.

7. A marine sea water check valve according to claim 1, characterized in that: The second bevel gear (22) is engaged with the first bevel gear (16), the first connecting block (24) is located between adjacent second connecting blocks (25), the side of the first connecting block (24) and the second connecting block (25) is provided with a third opening hole corresponding to the third screw rod, and the bristles of the cleaning brush (23) are in contact with the filter screen (26).

8. A marine sea water check valve according to claim 1, characterized in that: The small motor (14) is fixedly installed above the heat conducting plate (31), the surface of the heat conducting plate (31) and the support (13) is provided with a fourth opening hole corresponding to the output shaft of the small motor (14), the inside of the heat conducting plate (31) is provided with a flow cavity, and the flow cavity is communicated with the butt joint pipe (32).

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