Anti-falling and easy-to-disassemble filter screen seawater filtering device

Abstract

This invention discloses a seawater filtration device with an easy-to-disassemble and prevent-fall-off filter screen, belonging to the field of seawater filtration technology. It includes a housing with an inlet and an outlet on its side walls. Inside the housing are a backwashing assembly, a partition, and a vertically arranged filter screen. A cover plate is fixedly connected to the top of the housing. This invention employs a quick-release locking mechanism consisting of an annular plate, an arc-shaped pressure plate, a locking block, and a compression spring. The continuous pre-tension force of the compression spring drives the locking block to insert into the locking groove on the outside of the pressure cap to complete the fixation. Compared to traditional bolt fixing methods, this invention allows for rapid locking and releasing of the pressure cap and filter screen without any special tools, effectively reducing manual labor intensity and significantly shortening disassembly and assembly time. Simultaneously, the continuous pre-tension force provided by the elastic compression structure effectively resists vibration and impact during equipment operation, preventing the pressure cap from loosening, significantly improving the stability of the filter screen installation, and ensuring long-term safe operation of the equipment.

Description

Technical Field

[0001] This invention relates to a seawater filtration device, and more particularly to a seawater filtration device with an anti-detachment and easily detachable filter screen, belonging to the field of seawater filtration technology. Background Technology

[0002] Currently, seawater self-cleaning filters widely used in industry are usually equipped with automatic backwashing function. The working principle is as follows: when the pressure difference across the filter screen reaches the set threshold, the system automatically switches the water flow direction and uses the filtered clean water to backwash the filter screen surface, flushing the accumulated loose impurities to the drain outlet, thereby extending the continuous operation time of the filter screen to a certain extent and reducing the frequency of manual maintenance.

[0003] However, in actual seawater conditions, seawater contains not only physical impurities such as silt and debris, but also a large number of planktonic algae, bacteria and marine microorganisms. For stubborn pollutants, the backwash water flow cannot effectively penetrate and remove them, but may instead compact them even more. Therefore, existing seawater self-cleaning filters still need to be manually disassembled and cleaned regularly. During special periods such as red tides in summer or jellyfish invasions, they may even need to be disassembled and cleaned once a day.

[0004] Existing self-cleaning filters generally use a top-removal structure for their filter screens, and the equipment itself is quite tall. Workers cannot remove and install the filter screens on the ground; they must use a special operating platform or scaffolding to work at height. During disassembly and assembly, workers must first use a wrench to unscrew dozens of fixing bolts on the top end cover one by one, slowly open the heavy end cover, and then manually lift the filter screen, which weighs tens of kilograms, vertically upward from the filter chamber and transfer it to the ground via the platform for deep cleaning. After cleaning, the filter screen is lifted again and accurately aligned with the installation position before being placed back into the filter chamber. Finally, all fixing bolts are tightened one by one and a pressure test is performed. The entire process is time-consuming and labor-intensive, seriously affecting the disassembly and assembly speed and maintenance efficiency.

[0005] To address these issues, a seawater filtration device with an anti-detachment, easily removable filter screen was designed. Summary of the Invention

[0006] The main objective of this invention is to provide a seawater filtration device with an anti-detachment and easily detachable filter screen to solve the problems mentioned in the background art.

[0007] The objective of this invention can be achieved by adopting the following technical solution: The seawater filtration device with an anti-fall-off and easy-to-disassemble filter screen includes a housing. The side walls of the housing are respectively provided with an inlet and an outlet. Inside the housing, there are backwashing components, partitions, and vertically arranged filter screens. A cover plate is fixedly connected to the top of the housing. The cover plate has an installation through hole for the filter screen to pass through. Above the installation through hole, there is a pressure cap for pressing the top of the filter screen. The top of the cover plate is equipped with a quick-release locking mechanism corresponding to the pressure cap, which is used to quickly lock or release the pressure cap; A support plate is rotatably fitted onto the top of the shell, and a rotating mechanism is provided between the support plate and the shell to drive the support plate to rotate around the axis of the shell; The bottom of the tray is equipped with an unlocking mechanism that works with the quick-release locking mechanism. When the tray is rotated to the preset unlocking position, the unlocking mechanism automatically triggers the quick-release locking mechanism to complete the unlocking. The bottom of the tray is fixedly connected to a vertically set electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected to a transfer mechanism. The transfer mechanism is used to lift the pressure cap and the filter screen upward as a whole, rotate 180° and then release them downward after unlocking.

[0008] Preferably, the quick-connect locking mechanism includes an annular plate fixedly connected to the top of the cover plate. The outer wall of the annular plate is provided with a hidden groove along the circumference. Both ends of the hidden groove are hinged with arc-shaped pressure plates. A locking block is fixedly connected to the side of the arc-shaped pressure plate near the pressure cap. The inner wall of the hidden groove is provided with a through-hole that mates with the locking block. An arc-shaped guide plate is uniformly fixed to the top of the cover plate along the circumference. A compression spring is fixedly connected between the inner side of the arc-shaped guide plate and the outer side of the arc-shaped pressure plate. A locking groove that matches the locking insert is opened on the outer wall of the pressure cap. When the compression spring is in its natural state, it drives the locking block to pass through the through-hole and insert into the locking groove, thereby locking the pressure cap.

[0009] This structure allows for quick locking of the pressure cap without the need for special tools, and the continuous preload provided by the compression spring can effectively resist vibration and water hammer effects during equipment operation, preventing the pressure cap from loosening and falling off.

[0010] Preferably, the outer wall of the annular plate is provided with a V-shaped notch, which is connected to the hidden groove; The ends of the two sets of arc-shaped pressure plates away from the hinge point are fitted together, and the fitting point is located in the middle of the V-shaped notch. Both sets of arc-shaped pressure plates have arc-shaped guide edges on the outer sides of their mating ends; The gap between the two sets of arc-shaped guide plates is aligned with the V-shaped notch, and the bevel at the end of the arc-shaped guide plate is flush with the side of the V-shaped notch.

[0011] The combination of the V-shaped notch and the arc-shaped guide edge ensures that the unlocking mechanism is accurately inserted and applies force evenly to the two sets of arc-shaped pressure plates, making the unlocking process smooth and without jamming. At the same time, the guiding effect of the arc-shaped guide plate can prevent the unlocking components from deflecting.

[0012] Preferably, the unlocking mechanism includes a vertical plate fixedly connected to the bottom of the tray, and a conical insert is horizontally slidably mounted on the vertical plate along the radial direction of the housing, with the tip of the conical insert facing the center of the cover plate; A fixing block is fixedly connected to the top of the conical insert, and a return spring is fixedly connected between the fixing block and the vertical plate; When the tray rotates the conical insert to align with the V-shaped notch, the conical insert is inserted into the V-shaped notch under the action of the return spring, and presses the two sets of arc-shaped pressure plates outward along the arc-shaped guide edge, so that the locking insert disengages from the locking groove to complete the unlocking.

[0013] The unlocking mechanism can automatically trigger the unlocking action as the tray rotates, eliminating the need for manual operation of the locking components and achieving automated synchronous control of locking and unlocking.

[0014] Preferably, the rotating mechanism includes an external gear ring fixedly sleeved on the outside of the housing, a first motor fixedly connected to the bottom of the support plate, the output axis of the first motor passing through the support plate and fixedly connected to a first gear, and the first gear meshing with the external gear ring.

[0015] The gear meshing transmission method has high transmission accuracy and stable operation, and can precisely control the rotation angle of the tray to ensure accurate alignment between the unlocking mechanism and the quick-release locking mechanism.

[0016] Preferably, the transfer mechanism includes a mounting plate fixedly connected to the output end of the electric telescopic rod, a rotating shaft rotatably mounted on the top of the mounting plate, an arm fixedly fixed horizontally at the top of the rotating shaft, a hook plate fixedly connected to the end of the arm away from the rotating shaft, and a T-shaped lifting platform adapted to the hook plate fixedly connected to the top of the pressure cap.

[0017] The combination of the hook plate and the T-shaped hanging platform is simple and reliable, and can quickly realize the hanging and separation of the pressure cap and the filter screen, greatly improving the efficiency of the filter screen transfer process.

[0018] Preferably, a second motor is fixedly connected to the bottom of the mounting plate, the output shaft of the second motor passes through the mounting plate upward and is fixedly connected to a second gear, and a third gear is fixedly connected to the top of the rotating shaft. The second gear and the third gear mesh to drive the boom to rotate around the rotating shaft.

[0019] The rotation of the arm is driven by gear transmission, which allows for precise control of the rotation angle, ensuring that the filter screen can be accurately transferred to the ground operation area or reset to the installation position.

[0020] Preferably, a first magnet block is fixedly connected to the inner side of the hook plate, and a second magnet block that is magnetically attracted to the first magnet block is fixedly connected to the top of the T-shaped platform, in order to improve the stability of the hooking process.

[0021] The magnetic adsorption structure effectively prevents the hook plate from slipping off the T-shaped platform during lifting and rotation, greatly improving the safety and reliability of the filter transfer process.

[0022] Preferably, at least two vertically arranged second guide rods are fixedly connected between the mounting plate and the support plate. The second guide rods slide through the support plate and are used to guide the telescopic movement of the electric telescopic rod.

[0023] The second guide rod can limit the rotation and lateral displacement of the mounting plate, ensuring that the telescopic movement of the electric telescopic rod always remains vertical, and preventing the filter screen from tilting or colliding during lifting and lowering.

[0024] Preferably, a first guide rod is slidably mounted on the vertical plate along the radial direction of the housing, one end of the first guide rod is fixedly connected to the fixing block, and the first guide rod passes through the inside of the reset spring.

[0025] The first guide rod can provide dual guidance for the sliding of the tapered insert and the extension and retraction of the return spring, preventing the components from deflecting or deforming, and ensuring the operation accuracy and service life of the unlocking mechanism.

[0026] The beneficial effects of this invention are as follows: The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen provided by this invention adopts a quick-insertion locking mechanism consisting of an annular plate, an arc-shaped pressure plate, a locking block, and a compression spring. The locking block is driven to insert into the locking groove on the outside of the pressure cap by the continuous pre-tightening force of the compression spring to complete the fixation. Compared with the traditional bolt fixing method, the pressure cap and the filter screen can be quickly locked and released without any special tools, which effectively reduces the intensity of manual labor and significantly shortens the disassembly and assembly time. At the same time, the continuous pre-tightening force provided by the elastic compression structure can effectively resist the vibration and impact during equipment operation, prevent the pressure cap from loosening, significantly improve the stability of filter screen installation, and ensure the long-term safe operation of the equipment. By rotating a tray at the top of the housing and integrating an unlocking mechanism consisting of a conical insert and a return spring on the tray, when the tray drives the unlocking mechanism to rotate to the preset position, the conical insert automatically inserts into the V-shaped notch of the annular plate and simultaneously presses outwards two sets of arc-shaped pressure plates, completing the automatic unlocking of the corresponding locking insert in one go. Moreover, the unlocking process is precisely synchronized with the hooking action of the transfer mechanism. No manual operation of the locking components is required throughout the entire process, and a single person can independently complete the entire process of filter screen disassembly and assembly, further simplifying the operation and maintenance steps. Through the coordinated operation of the electric telescopic rod and the transfer mechanism, after unlocking, the hook plate of the transfer mechanism automatically hooks onto the T-shaped platform at the top of the pressure cap. The electric telescopic rod lifts the pressure cap and filter screen upwards as a whole. Then, the second motor drives the boom to rotate 180°, smoothly lowering the filter screen to the operating height. Workers do not need to use the operating platform or scaffolding to perform high-altitude operations. They can complete the deep cleaning and replacement of the filter screen on the ground, completely eliminating the safety hazards of high-altitude operations, while significantly reducing maintenance labor costs and equipment downtime losses. Attached Figure Description

[0027] Figure 1This is a front view schematic diagram of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 4 This is a schematic diagram showing the rotating connection state between the tray and the housing of the present invention; Figure 5 This is a schematic diagram of the top structure of the pallet of the present invention; Figure 6 This is a schematic diagram of the cover plate top locking mechanism of the present invention; Figure 7 This is a schematic diagram showing the connection state between the pressure cap and the filter screen on the cover plate of the present invention; Figure 8 This is a front view schematic diagram of the connection state between the pressure cap and the filter screen according to the present invention; Figure 9 This is a schematic diagram of the annular plate structure of the present invention; Figure 10 This is a schematic diagram showing the connection state between the arc-shaped pressure plate and the locking block of the present invention.

[0028] In the diagram: 1. Shell; 101. Inlet; 102. Outlet; 103. Backwash assembly; 104. Baffle; 105. Filter screen; 106. Cover plate; 2. Press the cap; 3. Quick-connect locking mechanism; 301. Annular plate; 302. V-shaped notch; 303. Hidden groove; 304. Arc-shaped pressure plate; 305. Locking block; 306. Through port; 307. Arc-shaped guide plate; 308. Compression spring; 309. Locking groove; 4. Pallet; 5. Rotating mechanism; 501. External gear ring; 502. First motor; 503. First gear; 6. Unlocking mechanism; 601. Vertical plate; 602. Conical insert; 603. Fixing block; 604. Return spring; 605. First guide rod; 7. Electric telescopic pole; 8. Transfer mechanism; 801. Mounting plate; 802. Second guide rod; 803. Rotating shaft; 804. Arm; 805. Hook plate; 806. First magnet block; 807. T-shaped lifting platform; 808. Second magnet block; 809. Second motor; 810. Second gear; 811. Third gear. Detailed Implementation

[0029] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0030] Example 1: As Figures 1-10 As shown, this embodiment provides a seawater filtration device with an easy-to-disassemble and anti-fall-off filter screen, including a housing 1. The side walls of the housing 1 are respectively provided with an inlet 101 and an outlet 102. The housing 1 is provided with a backwashing assembly 103. The backwashing assembly 103 includes a backwashing pipe rotatably disposed inside the filter screen 105, a drive motor for driving the backwashing pipe to rotate, and a drain valve disposed at the bottom of the housing 1. During backwashing, the filtered clean water is used to backwash the inner wall of the filter screen, and impurities are discharged through the drain valve. The partition 104 and the vertically arranged filter screen 105 are fixedly connected to the top of the housing 1. The cover plate 106 is fixedly connected to the top of the housing 1. The cover plate 106 has a mounting through hole for the filter screen 105 to pass through. There are multiple sets of mounting through holes, which are evenly distributed around the circumference of the cover plate 106. Above the mounting through holes is a pressure cap 2 for pressing the top of the filter screen 105. The positions of the water inlet 101, the drain outlet 102 and the sewage outlet of the backwashing component 103 are all lower than the horizontal height of the partition 104 to avoid interference with the rotation of the electric telescopic rod 7 during the rotation replacement process. The top of the cover plate 106 is provided with a quick-release locking mechanism 3 corresponding to the pressure cap 2, which is used to quickly lock or release the pressure cap 2; A support plate 4 is rotatably fitted onto the top of the housing 1. A rotating mechanism 5 is provided between the support plate 4 and the housing 1 to drive the support plate 4 to rotate around the axis of the housing 1. The bottom of the tray 4 is provided with an unlocking mechanism 6 that cooperates with the quick-release locking mechanism 3. When the tray 4 is rotated to the preset unlocking position, the unlocking mechanism 6 automatically triggers the quick-release locking mechanism 3 to complete the unlocking. The bottom of the tray 4 is fixedly connected to a vertically arranged electric telescopic rod 7. The output end of the electric telescopic rod 7 faces upward. The output end of the electric telescopic rod 7 is fixedly connected to a transfer mechanism 8. The transfer mechanism 8 is used to lift the pressure cap 2 and the filter screen 105 together upward, rotate 180° and then release downward after unlocking.

[0031] When the equipment is running normally, seawater enters the interior of the housing 1 through the inlet 101, is guided by the baffle 104 and passes through the filter screen 105. The filtered clean water is discharged from the drain outlet 102. When the pressure difference across the filter screen 105 reaches the set value, the backwashing component 103 is activated, using the filtered clean water to backwash the surface of the filter screen 105 and flush loose impurities to the drain outlet. When backwashing fails to restore the flow rate of filter screen 105 and manual disassembly and cleaning are required, the rotating mechanism 5 is activated to drive the support plate 4 to rotate around the axis of the housing 1. The support plate 4 drives the unlocking mechanism 6 to rotate synchronously. When the unlocking mechanism 6 rotates to align with the quick-connect locking mechanism 3, the quick-connect locking mechanism 3 is automatically triggered to unlock the pressure cap 2. At the same time, the transfer mechanism 8 hooks the top of the pressure cap 2, and the electric telescopic rod 7 lifts the pressure cap 2 and filter screen 105 upwards as a whole. The transfer mechanism 8 drives it to rotate 180° and then releases it downwards, allowing the worker to complete the deep cleaning of filter screen 105. After cleaning, the transfer mechanism 8 lifts and rotates the filter screen 105 and pressure cap 2 back to their original positions and lowers them to the installation position. The support plate 4 drives the unlocking mechanism 6 to rotate away, and the quick-connect locking mechanism 3 automatically locks. The above steps are repeated to disassemble and clean all filter screens 105 in sequence. After that, the equipment resumes normal operation.

[0032] Example 2: The solution in Example 1 will be further described below with reference to its specific working method. See the description below for details: In this embodiment, the quick-connect locking mechanism 3 includes an annular plate 301 fixedly connected to the top of the cover plate 106. The outer wall of the annular plate 301 is provided with a hidden groove 303 along the circumferential direction. Both ends of the hidden groove 303 are hinged with arc-shaped pressure plates 304. A locking block 305 is fixedly connected to the side of the arc-shaped pressure plate 304 near the pressure cap 2. The inner side wall of the hidden groove 303 is provided with a through-hole 306 that cooperates with the locking block 305. An arc-shaped guide plate 307 is uniformly fixed on the top of the cover plate 106 along the circumference. A compression spring 308 is fixedly connected between the inner side of the arc-shaped guide plate 307 and the outer side of the arc-shaped pressure plate 304. A locking groove 309 adapted to the locking insert 305 is opened on the outer wall of the pressure cap 2. When the compression spring 308 is in its natural state, it drives the locking block 305 to pass through the through-hole 306 and insert into the locking groove 309, thereby locking the pressure cap 2.

[0033] First, the filter screen 105 is fixedly connected to the pressure cap 2 with bolts. Then, by hoisting the pressure cap 2, the filter screen 105 is inserted into the mounting through hole on the cover plate 106. At the same time, the unlocking mechanism 6 is in the unlocked state, which drives the arc-shaped pressure plate 304 to rotate outward around the hinge point, thereby causing the locking insert 305 to exit the through port 306. At the same time, the compression spring 308 is compressed. The filter screen 105 and the pressure cap 2 can be smoothly released and inserted. When the pressure cap 2 descends to the point where the locking groove 309 is aligned with the through port 306, the filter screen 105 is inserted. At this time, the support plate 4 drives the unlocking mechanism 6 to rotate away, and the compression spring 308 releases its elastic potential energy, pushing the arc-shaped pressure plate 304 to rotate inward, driving the locking insert 305 to pass through the through port 306 and insert into the locking groove 309, thus completing the automatic locking of the pressure cap 2. The continuous preload provided by the compression spring 308 keeps the locking block 305 in the inserted state, which can effectively resist the vibration and water hammer effect during equipment operation and prevent the pressure cap 2 from loosening and falling off. The quick-release locking mechanism 3 corresponds one-to-one with the pressure cap 2 and is evenly distributed along the top circumference of the cover plate 106. Every time the support plate 4 rotates by a fixed angle, the unlocking mechanism 6 can unlock a set of quick-release locking mechanisms 3 and disassemble / install the corresponding filter screen 105.

[0034] In this embodiment, a V-shaped notch 302 is provided on the outer wall of the annular plate 301, and the V-shaped notch 302 is connected to the hidden groove 303. The ends of the two sets of arc-shaped pressure plates 304 away from the hinge point are attached to each other, and the attachment point is located in the middle of the V-shaped notch 302; Both sets of arc-shaped pressure plates 304 have arc-shaped guide edges on the outer sides of their mating ends; The gap between the two sets of arc-shaped guide plates 307 is aligned with the V-shaped notch 302, and the inclined surface at the end of the arc-shaped guide plate 307 is flush with the side of the V-shaped notch 302.

[0035] The V-shaped notch 302 provides an insertion channel for the unlocking mechanism 6. The mating ends of the two sets of arc-shaped pressure plates 304 are located at the center of the V-shaped notch 302, ensuring that the unlocking force can be evenly applied to the two arc-shaped pressure plates 304. The arc-shaped guide edge ensures that the conical insert 602 can be smoothly inserted between the two sets of arc-shaped pressure plates 304, making the unlocking process smoother. The inclined surface at the end of the arc-shaped guide plate 307 is flush with the side of the V-shaped notch 302, which can guide the conical insert 602, ensuring that it is accurately inserted into the gap between the two sets of arc-shaped pressure plates 304, and ensuring that the conical insert 602 can slide out smoothly from the V-shaped notch 302 after the filter screen 105 is installed.

[0036] In this embodiment, the unlocking mechanism 6 includes a vertical plate 601 fixedly connected to the bottom of the tray 4. A tapered insert 602 is horizontally slidably mounted on the vertical plate 601 along the radial direction of the housing 1. The tip of the tapered insert 602 faces the center of the cover plate 106. A fixing block 603 is fixedly connected to the top of the conical insert 602, and a return spring 604 is fixedly connected between the fixing block 603 and the vertical plate 601. When the tray 4 rotates the conical insert 602 to align with the V-shaped notch 302, the conical insert 602 is inserted into the V-shaped notch 302 under the action of the return spring 604, and presses the two sets of arc-shaped pressure plates 304 outward along the arc-shaped guide edge, so that the locking insert 305 disengages from the locking groove 309 to complete the unlocking.

[0037] When the support plate 4 rotates the vertical plate 601 and the conical insert 602 to the position of the V-shaped notch 302, the return spring 604 pushes the fixing block 603 to move towards the annular plate 301, causing the conical insert 602 to insert into the V-shaped notch 302. As the conical insert 602 goes deeper, its conical surface presses outward along the arc-shaped guide edge against the two sets of arc-shaped pressure plates 304, causing the arc-shaped pressure plates 304 to rotate outward around the hinge point. At the same time, the compression spring 308 is compressed, causing the locking insert 305 to exit from the locking groove 309, thus completing the automatic unlocking of the pressure cap 2. When the support plate 4 continues to rotate, the inclined surface of the conical insert 602 is subjected to the reaction force of the side wall of the V-shaped notch 302, compressing the return spring 604 and exiting from the V-shaped notch 302. The arc-shaped pressure plate 304 is reset under the action of the compression spring 308.

[0038] In this embodiment, the rotating mechanism 5 includes an external gear ring 501 fixedly sleeved on the outside of the housing 1, a first motor 502 fixedly connected to the bottom of the support plate 4, the output axis of the first motor 502 passes through the support plate 4 and is fixedly connected to a first gear 503, and the first gear 503 meshes with the external gear ring 501.

[0039] When it is necessary to drive the pallet 4 to rotate, the first motor 502 is started. The first motor 502 drives the first gear 503 to rotate. Since the outer gear ring 501 is fixed on the housing 1 and remains stationary, the first gear 503 rolls along the tooth surface of the outer gear ring 501, thereby driving the pallet 4 to rotate around the axis of the housing 1, realizing the position adjustment of the unlocking mechanism 6 and the transfer mechanism 8.

[0040] In this embodiment, the transfer mechanism 8 includes a mounting plate 801 fixedly connected to the output end of the electric telescopic rod 7. A rotating shaft 803 is rotatably mounted on the top of the mounting plate 801. An arm 804 is horizontally fixed to the top of the rotating shaft 803. A hook plate 805 is fixedly connected to the end of the arm 804 away from the rotating shaft 803. A T-shaped lifting platform 807 adapted to the hook plate 805 is fixedly connected to the top of the pressure cap 2.

[0041] During the rotation of the tray 4, the electric telescopic rod 7 is in the retracted and reset state, keeping the mounting plate 801 in the initial position at the bottom. When it is rotated to the corresponding pressure cap 2 and unlocked, the hook plate 805 automatically engages in the lower groove of the T-shaped lifting platform 807. The electric telescopic rod 7 extends upward, and the pressure cap 2 and the filter screen 105 are lifted upward as a whole through the hook plate 805 and the T-shaped lifting platform 807 until the filter screen 105 is completely detached from the inside of the housing 1.

[0042] In this embodiment, a second motor 809 is fixedly connected to the bottom of the mounting plate 801. The output shaft of the second motor 809 passes through the mounting plate 801 and is fixedly connected to a second gear 810. A third gear 811 is fixedly connected to the top of the rotating shaft 803. The second gear 810 and the third gear 811 mesh with each other to drive the arm 804 to rotate around the rotating shaft 803.

[0043] Once the filter screen 105 is fully lifted, the second motor 809 is activated. The second motor 809 drives the second gear 810 to rotate. Through the meshing transmission between the second gear 810 and the third gear 811, the rotating shaft 803 and the arm 804 are rotated 180°, so that the filter screen 105 is transferred from directly above the housing 1 to the ground operating area outside the equipment. Then the electric telescopic rod 7 is lowered back down, and the filter screen 105 is lowered smoothly, so that the workers can carry out the cleaning operation.

[0044] In this embodiment, a first magnet block 806 is fixedly connected to the inner side of the hook plate 805, and a second magnet block 808 that is magnetically attracted to the first magnet block 806 is fixedly connected to the top of the T-shaped hanging platform 807, which is used to improve the stability of the hooking process.

[0045] When the hook plate 805 is inserted under the T-shaped platform 807, the first magnet 806 and the second magnet 808 attract each other, making the hook plate 805 fit tightly against the T-shaped platform 807, preventing the hook plate 805 from slipping out of the T-shaped platform 807 during lifting and rotation, and ensuring the safety and reliability of the filter screen 105 transfer process.

[0046] In this embodiment, at least two vertically arranged second guide rods 802 are fixedly connected between the mounting plate 801 and the support plate 4. The second guide rods 802 slide through the support plate 4 and are used to guide the telescopic movement of the electric telescopic rod 7.

[0047] When the electric telescopic rod 7 extends or retracts, the second guide rod 802 slides up and down along the guide hole on the support plate 4, which can limit the rotation and lateral displacement of the mounting plate 801, ensuring that the extension and retraction of the electric telescopic rod 7 always remains in the vertical direction, and preventing the filter screen 105 from tilting or colliding during the lifting and lowering process.

[0048] In this embodiment, a first guide rod 605 is slidably mounted on the vertical plate 601 along the radial direction of the housing 1. One end of the first guide rod 605 is fixedly connected to the fixing block 603, and the first guide rod 605 passes through the inside of the reset spring 604.

[0049] The first guide rod 605 can guide the sliding of the conical insert 602 to prevent it from deflecting during insertion and withdrawal. At the same time, the first guide rod 605 passes through the inside of the reset spring 604 and can support and limit the reset spring 604 to prevent the reset spring 604 from bending and deforming during compression and extension, thus ensuring the operation accuracy and reliability of the unlocking mechanism 6.

[0050] The solutions in Embodiment 1 and Embodiment 2 will be further described below with reference to their specific working methods. Preparation phase: Close the inlet and outlet valves of the filter, drain the seawater inside the casing 1, and ensure that the equipment is in a safe condition; Automatic unlocking: Start the first motor 502 to drive the tray 4 to rotate. When the conical insert 602 rotates to align with the V-shaped notch 302, the reset spring 604 pushes the conical insert 602 into the V-shaped notch 302, and squeezes the arc-shaped pressure plate 304 outward, so that the locking insert 305 disengages from the locking groove 309, thus completing the automatic unlocking of the pressure cap 2. Automatic hooking: The hook plate 805 is inserted into the lower part of the T-shaped hanging platform 807, and the first magnet block 806 and the second magnet block 808 are attracted and fixed. Lifting and Transfer: The electric telescopic rod 7 extends upward to lift the pressure cap 2 and the filter screen 105 as a whole; the second motor 809 is started to drive the arm 804 to rotate 180°, transferring the filter screen 105 to the ground operation area; the electric telescopic rod 7 returns to its original position downward to release the filter screen 105 downward. Cleaning and Reinstallation: After the workers complete the deep cleaning of the filter screen 105 on the ground, the electric telescopic rod 7 lifts the filter screen 105, the arm 804 rotates 180° in the opposite direction to reset, and the filter screen 105 is lowered into the installation position inside the housing 1. Automatic locking: The tray 4 drives the unlocking mechanism 6 to rotate away from the V-shaped notch 302, the conical insert 602 is disengaged under the action of the return spring 604, the compression spring 308 pushes the arc-shaped pressure plate 304 to reset, and the locking insert 305 is reinserted into the locking groove 309, thus completing the automatic locking of the pressure cap 2. Resumption of operation: After all filters 105 have been disassembled and reassembled, open the inlet and outlet valves to restore the equipment to normal filtration status.

[0051] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A seawater filtration device with an anti-fall-off and easy-to-disassemble filter screen, comprising a housing (1), wherein the side walls of the housing (1) are respectively provided with an inlet (101) and an outlet (102), and the interior of the housing (1) is provided with a backwashing assembly (103), a partition (104) and a vertically arranged filter screen (105), and a cover plate (106) is fixedly connected to the top of the housing (1), wherein the cover plate (106) is provided with an installation through hole for the filter screen (105) to pass through, and a pressure cap (2) for pressing the top of the filter screen (105) is provided above the installation through hole, characterized in that: The top of the cover plate (106) is provided with a quick-release locking mechanism (3) corresponding to the pressure cap (2) for quickly locking or releasing the pressure cap (2). A tray (4) is rotatably fitted onto the top of the housing (1), and a rotating mechanism (5) is provided between the tray (4) and the housing (1) to drive the tray (4) to rotate around the axis of the housing (1); The bottom of the tray (4) is provided with an unlocking mechanism (6) that cooperates with the quick-release locking mechanism (3). When the tray (4) is rotated to the preset unlocking position, the unlocking mechanism (6) automatically triggers the quick-release locking mechanism (3) to complete the unlocking. The bottom of the tray (4) is fixedly connected to a vertically arranged electric telescopic rod (7), and the output end of the electric telescopic rod (7) is fixedly connected to a transfer mechanism (8). The transfer mechanism (8) is used to lift the pressure cap (2) and the filter screen (105) upward as a whole, rotate 180° and then release them downward after unlocking.

2. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 1, characterized in that: The quick-connect locking mechanism (3) includes an annular plate (301) fixedly connected to the top of the cover plate (106). The outer wall of the annular plate (301) is provided with a hidden groove (303) along the circumferential direction. Both ends of the hidden groove (303) are hinged with arc-shaped pressure plates (304). The side of the arc-shaped pressure plate (304) near the pressure cap (2) is fixedly connected with a locking block (305). The inner side wall of the hidden groove (303) is provided with a through-hole (306) that cooperates with the locking block (305). The top of the cover plate (106) is uniformly fixed with an arc-shaped guide plate (307) along the circumference. A compression spring (308) is fixedly connected between the inner side of the arc-shaped guide plate (307) and the outer side of the arc-shaped pressure plate (304). The outer wall of the pressure cap (2) is provided with a locking groove (309) that is compatible with the locking insert (305). When the compression spring (308) is in its natural state, it drives the locking block (305) to pass through the through-hole (306) and insert into the locking groove (309) to lock the pressure cap (2).

3. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 2, characterized in that: The outer wall of the annular plate (301) is provided with a V-shaped notch (302), which is connected to the hidden groove (303); The ends of the two sets of arc-shaped pressure plates (304) away from the hinge point are attached to each other, and the attachment point is located in the middle of the V-shaped notch (302); Both sets of arc-shaped pressure plates (304) have arc-shaped guide edges on the outer sides of their mating ends; The gap between the two sets of arc-shaped guide plates (307) is directly opposite the V-shaped notch (302), and the inclined surface at the end of the arc-shaped guide plate (307) is flush with the side of the V-shaped notch (302).

4. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 3, characterized in that: The unlocking mechanism (6) includes a vertical plate (601) fixedly connected to the bottom of the tray (4), and a conical insert (602) is horizontally slidably mounted on the vertical plate (601) along the radial direction of the housing (1), with the tip of the conical insert (602) facing the center of the cover plate (106); A fixing block (603) is fixedly connected to the top of the conical insert (602), and a return spring (604) is fixedly connected between the fixing block (603) and the vertical plate (601). When the tray (4) rotates the conical insert (602) to align with the V-shaped notch (302), the conical insert (602) is inserted into the V-shaped notch (302) under the action of the return spring (604), and presses the two sets of arc-shaped pressure plates (304) outward along the arc-shaped guide edge, so that the locking insert (305) is released from the locking groove (309) to complete the unlocking.

5. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 1, characterized in that: The rotating mechanism (5) includes an external gear ring (501) fixedly sleeved on the outside of the housing (1), a first motor (502) fixedly connected to the bottom of the support plate (4), the output axis of the first motor (502) passes through the support plate (4) and is fixedly connected to a first gear (503), and the first gear (503) meshes with the external gear ring (501).

6. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 1, characterized in that: The transfer mechanism (8) includes a mounting plate (801) fixedly connected to the output end of the electric telescopic rod (7). A rotating shaft (803) is rotatably mounted on the top of the mounting plate (801). An arm (804) is horizontally fixed at the top of the rotating shaft (803). A hook plate (805) is fixedly connected to one end of the arm (804) away from the rotating shaft (803). A T-shaped lifting platform (807) adapted to the hook plate (805) is fixedly connected to the top of the pressure cap (2).

7. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 6, characterized in that: The bottom of the mounting plate (801) is fixedly connected to a second motor (809). The output shaft of the second motor (809) passes through the mounting plate (801) and is fixedly connected to a second gear (810). The top of the rotating shaft (803) is fixedly connected to a third gear (811). The second gear (810) and the third gear (811) mesh to drive the boom (804) to rotate around the rotating shaft (803).

8. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 6, characterized in that: A first magnet block (806) is fixedly connected to the inner side of the hook plate (805), and a second magnet block (808) that is magnetically attracted to the first magnet block (806) is fixedly connected to the top of the T-shaped hanging platform (807) to improve the stability of the hooking process.

9. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 6, characterized in that: At least two vertically arranged second guide rods (802) are fixedly connected between the mounting plate (801) and the support plate (4). The second guide rods (802) slide through the support plate (4) to guide the telescopic movement of the electric telescopic rod (7).

10. The seawater filtration device with an anti-detachment and easy-to-disassemble filter screen according to claim 4, characterized in that: A first guide rod (605) is slidably mounted on the vertical plate (601) along the radial direction of the housing (1). One end of the first guide rod (605) is fixedly connected to the fixing block (603), and the first guide rod (605) passes through the inside of the return spring (604).

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