A tidal flat seawater desalination device

Abstract

The utility model discloses a kind of tidal flat seawater desalination devices, including mounting plate and two vertically arranged filters, two The filter is located in the inside space of mounting plate, two The filter bottom outer wall and circumferential outer wall top are all set with an installation port, two The installation port of mutual close is installed with same water inlet and outlet assembly, The water inlet and outlet assembly includes the installation disc of rotating connection in the bottom inner wall horizontal arrangement of mounting plate, The installation disc top outer wall is fixedly connected with four vertically arranged guide strips, four The guide strip slidingly connects with same horizontal arrangement mounting seat, The mounting seat center line and installation disc center line are coincidently arranged, the utility model is set by setting water inlet and outlet assembly, when the filter performance of being used is reduced, another filter is quickly replaced to continue using, can be cleaned subsequently, effectively avoid the influence of cleaning work to process efficiency.

Description

Technical Field

[0001] This utility model relates to the field of seawater desalination technology, specifically to a seawater desalination device for tidal flats. Background Technology

[0002] Tidal flats are tidal zones along the coast, between high and low tide levels, and possess vast areas and abundant marine resources. However, tidal flat areas are often located in transitional zones between the ocean and land, with unique ecological environments and groundwater with high mineralization, requiring desalination treatment before use.

[0003] A search revealed a utility model patent with Chinese patent publication number CN217794949U, which discloses a portable seawater desalination pre-filter. The filter includes a base, a filter body mounted on top of the base, a water inlet on the top of the filter body, a drain mechanism fixedly connected to the bottom side of the filter body, and four internal corners of the base with rotating motors fixedly connected to each. Each rotating motor's output shaft is fixedly connected to a threaded rod, and each threaded rod has a threaded slider threadedly connected to its surface. Each threaded slider has a support rod fixedly connected to one side.

[0004] When the above-mentioned device is in use, although the filter element can be backwashed, the backwashing process takes a certain amount of time and cannot be put back into use quickly, which will affect the work efficiency and there is room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a seawater desalination device for tidal flats to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a seawater desalination device for tidal flats, comprising an installation plate and two vertically arranged filters, both filters being located within the interior space of the installation plate. Each of the two filters has an installation port on its bottom outer wall and circumferential outer wall. Two adjacent installation ports are fitted with the same inlet / outlet assembly. The inlet / outlet assembly includes an installation disc rotatably connected to the inner bottom wall of the installation plate and horizontally arranged. Four vertically arranged guide strips are fixedly connected to the outer top wall of the installation disc. The four guide strips are slidably connected to the same horizontally arranged mounting seat. The centerline of the mounting seat coincides with the centerline of the installation disc. Two vertically arranged connection ports are fixedly connected inside the mounting seat, and these two connection ports are slidably inserted into the bottom installation ports of the two filters. A transmission structure is installed outside the installation plate, comprising a gear ring, a motor, gears, and an electric telescopic rod.

[0007] When the performance of the filter being used deteriorates, it can be quickly replaced with another filter for continued use, and cleaning can be performed afterward, effectively avoiding the impact of cleaning work on processing efficiency. The electric telescopic rod is controlled to retract, and the mounting base is moved downward. The two connection ports fixed inside it disengage from the opening at the bottom of the filter. Then, the motor inside the mounting plate is started, and the motor drives the gear to rotate. The gear drives the gear ring that meshes with it to rotate. The gear ring drives the mounting plate and mounting base to rotate half a turn. The connection port for the seawater supply pipe is below the inlet of the new filter. The operation is repeated to move the connection port that is currently in use to the opposite side of the outlet of the new filter. After the two connection ports are inserted into the inlet and outlet of the new filter respectively, the seawater desalination work can continue.

[0008] As a further preferred embodiment of this technical solution, the gear ring is coaxially fixed to the outer wall of the mounting plate, the motor is fixedly mounted on the inner wall of the bottom of the mounting plate by a bracket, the gear is coaxially fixed to the output end of the motor, and the gear meshes with the gear ring.

[0009] As a further preferred embodiment of this technical solution, the electric telescopic rod is coaxially fixed to the top outer wall of the mounting plate, the output end of the electric telescopic rod is fixedly connected to the mounting base, and a connecting hose is fixedly connected to one bottom end of each of the two connection ports.

[0010] As a further preferred embodiment of this technical solution, a vertically arranged fixing clip is fixedly connected to the inner wall of one end of the mounting plate. The fixing clip is located between the two filters. Two fixing components are installed on the outer side of the mounting plate, and the two filters are located between the two fixing components.

[0011] As a further preferred embodiment of this technical solution, the fixing component includes a support frame fixedly connected to the outer wall of one side of the mounting plate and vertically arranged, a horizontally arranged movable frame slidably connected inside the support frame, a vertically arranged movable clip fixedly connected to one end of the movable frame near the filter, the movable clip being snapped into the outside of the filter, a horizontally arranged lead screw rotatably connected inside the support frame, and the movable frame being threadedly connected to the outside of the lead screw.

[0012] If the filter needs to be replaced, the screw is rotated inside the support frame by the wheel drive. The screw then drives the movable frame connected to it to slide along the limiting groove inside the support frame. The movable frame moves the movable clip away from the filter. At this time, the filter will no longer be clamped and can be disassembled during the interface replacement process. The operation is convenient enough.

[0013] As a further preferred embodiment of this technical solution, the thread helix angle of the external thread of the lead screw is smaller than the equivalent friction angle.

[0014] As a further preferred embodiment of this technical solution, the material distribution of the filter element from the inside to the outside is as follows: polypropylene mesh, polyvinylidene fluoride microporous filter membrane, polypropylene pleated structure, aromatic polyamide composite nanofiltration membrane, polyacrylonitrile ultrafiltration membrane, and polyamide composite reverse osmosis membrane.

[0015] This utility model provides a seawater desalination device for tidal flats, which has the following beneficial effects:

[0016] (1) By setting up inlet and outlet water components, this utility model can quickly replace another filter when the performance of the filter being used decreases, and then clean it. This effectively avoids the cleaning work affecting the processing efficiency. The electric telescopic rod is controlled to start retracting, and the mounting base is driven to move downward. The two connection ports fixed inside it are disengaged from the opening at the bottom of the filter. Then, the motor inside the mounting plate is controlled to start. The motor drives the gear to rotate, and the gear drives the gear ring that meshes with it to rotate. The gear ring drives the mounting plate and the mounting base to rotate half a turn. The connection port connecting the seawater supply pipe is below the inlet of the new filter. The operation is repeated to move the connection port that is currently in use above to the opposite side of the outlet of the new filter. After the two connection ports are inserted into the inlet and outlet of the new filter respectively, the seawater desalination work can continue.

[0017] (2) By setting a fixed component, if the filter needs to be replaced, the screw is driven to rotate inside the support frame by the wheel. The screw can drive the movable frame connected to it to slide along the limiting groove inside the support frame. The movable frame drives the movable card away from the filter. At this time, the filter will no longer be clamped and can be disassembled during the interface replacement process. The operation is convenient enough. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 This is an enlarged structural schematic diagram of the water inlet and outlet components of this utility model;

[0021] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0022] In the diagram: 1. Mounting plate; 2. Filter; 3. Inlet / outlet water assembly; 4. Fixing assembly; 301. Mounting disc; 302. Gear ring; 303. Guide strip; 304. Mounting base; 305. Connection port; 306. Motor; 307. Gear; 308. Electric telescopic rod; 401. Support frame; 402. Moving frame; 403. Fixing clip; 404. Moving clip; 405. Lead screw. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 2 and Figure 3 As shown in this embodiment, a tidal flat seawater desalination device includes a mounting plate 1 and two vertically arranged filters 2. Both filters 2 are located inside the mounting plate 1. Each of the two filters 2 has an installation port on its bottom outer wall and circumferential outer wall. The same inlet / outlet water assembly 3 is installed on the two adjacent installation ports. The inlet / outlet water assembly 3 includes a mounting plate 301 that is rotatably connected to the bottom inner wall of the mounting plate 1 and horizontally arranged. Four vertically arranged guide bars 303 are fixedly connected to the top outer wall of the mounting plate 301. The four guide bars 303 are slidably connected to the same horizontally arranged mounting seat 304. The center line of the mounting seat 304 coincides with the center line of the mounting plate 301. Two vertically arranged connection ports 305 are fixedly connected inside the mounting seat 304, and the two connection ports 305 are slidably inserted into the bottom installation ports of the two filters 2. A transmission structure is installed on the outside of the mounting plate 1. The transmission structure includes a gear ring 302, a motor 306, a gear 307, and an electric telescopic rod 308.

[0025] The gear ring 302 is coaxially fixed to the outer circumference of the mounting plate 301. The motor 306 is fixedly mounted on the inner bottom of the mounting plate 1 by a bracket. The gear 307 is coaxially fixed to the output end of the motor 306 and meshes with the gear ring 302.

[0026] The electric telescopic rod 308 is coaxially fixed to the top outer wall of the mounting plate 301. The output end of the electric telescopic rod 308 is fixedly connected to the mounting base 304. A connecting hose is fixedly connected to one end of each of the two connection ports 305.

[0027] The control electric telescopic rod 308 begins to retract, causing the mounting base 304 to move downwards. The two connection ports 305 fixed inside it disengage from the opening at the bottom of the filter 2. Then, the motor 306 inside the control mounting plate 1 starts, driving the gear 307 to rotate. The gear 307 then drives the meshing gear ring 302 to rotate. The gear ring 302 drives the mounting plate 301 and the mounting base 304 to rotate half a turn. The connection port 305 connecting the seawater supply pipe is now below the inlet of the new filter 2. The operation is repeated until the upper connection port 305, which is currently in use, moves to the opposite side of the outlet of the new filter 2. After the two connection ports 305 are inserted into the inlet and outlet of the new filter 2 respectively, the seawater desalination work can continue. Meanwhile, the other two connection ports 305 are inserted into the original interface of the filter 2, backwashing the original filter 2. External water enters the original filter 2 from the upper connection port 305 and then flows out from the lower connection port 305. After backwashing, the original filter 2 can be reused.

[0028] like Figure 2 and Figure 4 As shown, a vertically arranged fixing clip 403 is fixedly connected to the inner wall of one end of the mounting plate 1. The fixing clip 403 is located in the middle of the two filters 2. Two fixing components 4 are installed on the outer side of the mounting plate 1, and the two filters 2 are located in the middle of the two fixing components 4.

[0029] The fixing component 4 includes a support frame 401 that is fixedly connected to the outer wall of one side of the mounting plate 1 and is vertically arranged. A horizontally arranged movable frame 402 is slidably connected inside the support frame 401. A vertically arranged movable clip 404 is fixedly connected to one end of the movable frame 402 near the filter 2. The movable clip 404 is locked onto the outside of the filter 2. A horizontally arranged lead screw 405 is rotatably connected inside the support frame 401. The movable frame 402 is threadedly connected to the outside of the lead screw 405.

[0030] If filter 2 needs to be replaced, the screw 405 is rotated inside the support frame 401 by the wheel drive. The screw 405 can then drive the movable frame 402, which is threaded to it, to slide along the limiting groove inside the support frame 401. The movable frame 402 drives the movable card 404 away from filter 2. At this time, filter 2 will no longer be clamped and can be disassembled during the interface replacement process. The operation is convenient enough.

[0031] like Figure 4 As shown, the thread helix angle of the external thread of the lead screw 405 is less than the equivalent friction angle, giving it a self-locking property. Consequently, when the movable frame 402 connected to it is fixing the filter 2, the position of the filter 2 will not change arbitrarily.

[0032] like Figure 2As shown, the material distribution of the filter element inside filter 2 from the inside out is as follows: polypropylene mesh, polyvinylidene fluoride microporous membrane, polypropylene pleated structure, aromatic polyamide composite nanofiltration membrane, polyacrylonitrile ultrafiltration membrane, and polyamide composite reverse osmosis membrane. Seawater first contacts the downstream polypropylene mesh structure outside the central support layer. This layer evenly disperses the water flow through its mesh openings, avoiding localized impacts and initially intercepting large suspended solids. Subsequently, the seawater flows through the polyvinylidene fluoride microporous membrane layer, whose pore size of 0.1-10 μm can trap colloids, algae, and some organic matter, completing the first stage of physical filtration. Next, the water flows into the upstream support layer of the polypropylene pleated structure. This layer reduces the pressure drop by increasing the filtration area, providing a stable pressure environment for subsequent membrane layers. In the nanofiltration (NF) stage, the aromatic polyamide composite membrane selectively traps divalent ions (such as Ca2+) using the charge effect. 2+ Mg 2+ The pretreated seawater softens the seawater and reduces the risk of scaling on the subsequent reverse osmosis membrane by introducing organic matter with a molecular weight of 200-1000 Da. The ultrafiltration (UF) layer uses a polyacrylonitrile (PAN) membrane with a pore size of 0.01-0.1 μm to intercept bacteria, viruses, and large molecular weight humic acid, further purifying the water. Finally, the pretreated seawater reaches the outermost polyamide reverse osmosis (RO) membrane. Under high pressure, water molecules pass through the semi-permeable membrane, while 95%-99.8% of the sodium... + Monovalent ions such as Cl- are retained, producing freshwater that meets drinking water standards.

[0033] This utility model provides a seawater desalination device for tidal flats, the specific working principle of which is as follows:

[0034] When the device is working, the water requiring desalination enters the corresponding filter 2 through a pipe from a connection port 305 at the bottom. After being filtered by various layers of filter media, it becomes fresh water, which then enters the middle section between the housing and the filter element. Finally, it flows out to the outside through the connection port 305 on the same side at the top. As the usage time increases, the performance of the filter 2 deteriorates. The device is then paused, and the electric telescopic rod 308 is retracted. The mounting base 304 is moved downwards, disengaging the two connection ports 305 fixed within it from the opening at the bottom of the filter 2. Next, the motor 306 inside the mounting plate 1 is started. The motor 306 drives the gear 307 to rotate, which in turn drives the meshing gear ring 302 to rotate. Ring 302 drives mounting plate 301 and mounting base 304 to rotate half a turn, so that the connection port 305 connecting the seawater supply pipe is below the inlet of the new filter 2. Repeat the operation to move the upper connection port 305 that is currently in use to the opposite side of the outlet of the new filter 2. After the two connection ports 305 are inserted into the inlet and outlet of the new filter 2 respectively, the seawater desalination work can continue. The other two connection ports 305 will also be inserted into the interface of the original filter 2 to backwash the original filter 2. The external water enters the original filter 2 from the upper connection port 305 and then flows out from the lower connection port 305. After backwashing, the original filter 2 can be used for subsequent backup.

[0035] If filter 2 needs to be replaced, the screw 405 is rotated inside the support frame 401 by the wheel drive. The screw 405 can then drive the movable frame 402, which is threaded to it, to slide along the limiting groove inside the support frame 401. The movable frame 402 drives the movable card 404 away from filter 2. At this time, filter 2 will no longer be clamped and can be disassembled during the interface replacement process. The operation is convenient enough.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seawater desalination device for tidal flats, comprising a mounting plate (1) and two vertically arranged filters (2), characterized in that: Both filters (2) are located inside the mounting plate (1). Each filter (2) has an installation port on its bottom outer wall and circumferential outer wall. The two adjacent installation ports are fitted with the same inlet / outlet assembly (3). The inlet / outlet assembly (3) includes a mounting plate (301) rotatably connected to a horizontally arranged mounting disc on the bottom inner wall of the mounting plate (1). Four vertically arranged guide strips (303) are fixedly connected to the top outer wall of the mounting disc (301). The four guide strips (303) are slidably connected... The mounting base (304) is set at the same horizontal level. The center line of the mounting base (304) coincides with the center line of the mounting plate (301). The mounting base (304) has two vertically set connection ports (305) fixedly connected inside. The two connection ports (305) are slidably inserted into the bottom mounting ports of the two filters (2). The mounting plate (1) is equipped with a transmission structure on the outside. The transmission structure includes a gear ring (302), a motor (306), a gear (307), and an electric telescopic rod (308).

2. The tidal flat seawater desalination device according to claim 1, characterized in that: The gear ring (302) is coaxially fixed on the outer circumference of the mounting plate (301), the motor (306) is fixedly mounted on the inner bottom of the mounting plate (1) by a bracket, the gear (307) is coaxially fixed on the output end of the motor (306), and the gear (307) meshes with the gear ring (302).

3. The tidal flat seawater desalination device according to claim 1, characterized in that: The electric telescopic rod (308) is coaxially fixed to the top outer wall of the mounting plate (301). The output end of the electric telescopic rod (308) is fixedly connected to the mounting base (304). A connecting hose is fixedly connected to one end of the bottom of each of the two connection ports (305).

4. The tidal flat seawater desalination device according to claim 1, characterized in that: A vertically arranged fixing clip (403) is fixedly connected to the inner wall of one end of the mounting plate (1). The fixing clip (403) is located in the middle of the two filters (2). Two fixing components (4) are installed on the outer side of the mounting plate (1), and the two filters (2) are located in the middle of the two fixing components (4).

5. A seawater desalination device for tidal flats according to claim 4, characterized in that: The fixing component (4) includes a support frame (401) fixedly connected to the outer wall of one side of the mounting plate (1) and vertically arranged. A horizontally arranged movable frame (402) is slidably connected inside the support frame (401). A vertically arranged movable clip (404) is fixedly connected to one end of the movable frame (402) near the filter (2). The movable clip (404) is just locked onto the outside of the filter (2). A horizontally arranged lead screw (405) is rotatably connected inside the support frame (401). The movable frame (402) is threaded to the outside of the lead screw (405).

6. A seawater desalination device for tidal flats according to claim 5, characterized in that: The thread helix angle of the external thread of the lead screw (405) is less than the equivalent friction angle.

7. The tidal flat seawater desalination device according to claim 1, characterized in that: The material distribution of the filter element inside the filter (2) from the inside out is as follows: polypropylene mesh, polyvinylidene fluoride microporous filter membrane, polypropylene pleated structure, aromatic polyamide composite nanofiltration membrane, polyacrylonitrile ultrafiltration membrane and polyamide composite reverse osmosis membrane.

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