A seawater desalination reverse osmosis water treatment device and method

Abstract

A kind of seawater desalination reverse osmosis water treatment device and method, belong to seawater desalination technical field.The base both sides are provided with support arm plate, the one end of processing tank is provided with fixed shaft and is connected with one support arm plate and is driven by motor transmission, piston shaft is inserted in another support arm plate and is sealed and extends into the inside of processing tank, two piston plates are fixed at the inside end of piston shaft, the board surface of piston plate is provided with water channel, the corresponding area is hingedly installed closed valve plate and is supported movable end by the compression spring inside L-shaped support, reverse osmosis plate is fixed between two piston plates, electric control telescopic cylinder is installed on another support arm plate, and is detachably connected with the outside end of piston shaft by connecting piece, processing tank is provided with one-way water inlet joint, one-way water outlet joint and cleaning liquid injection port.The reverse osmosis plate on piston rod and two piston plates are ingeniously matched with processing tank, can quickly and efficiently realize reverse osmosis treatment, will not produce deposit, facilitate reverse osmosis membrane cleaning, and the structure is simple and compact.

Description

Technical Field

[0001] This invention relates to a water treatment apparatus and method, and more particularly to a seawater desalination reverse osmosis water treatment apparatus and method, belonging to the field of seawater desalination technology. Background Technology

[0002] With the scarcity of freshwater resources, the application of seawater desalination in industrial production is of great significance in solving the freshwater problem. Reverse osmosis water treatment has become the main method of seawater desalination due to its simple process and low energy consumption.

[0003] Traditional reverse osmosis water treatment devices primarily utilize high-pressure equipment to pressurize the reverse osmosis tank, resulting in low treatment efficiency. During pressurization, the minimal seawater turbulence leads to impurity sedimentation after prolonged use, hindering subsequent water treatment. Chinese utility model patent CN215049203U (announcement date December 7, 2021), entitled "A High-Efficiency and Energy-Saving Reverse Osmosis Device for Seawater Desalination," addresses this sedimentation issue by adding multiple agitators, complicating the structure and increasing the technical difficulty of sealing. Furthermore, the reverse osmosis membrane's functionality gradually declines with prolonged use, requiring regular cleaning. Chinese utility model patent CN219072600U (announcement date May 26, 2023), entitled "Reverse Osmosis Seawater Desalination Equipment," besides incorporating cleaning brushes to prevent sedimentation, makes several modifications to facilitate membrane disassembly, further complicating the structure and compromising sealing performance. Given the current problems, there is an urgent need for a more reasonable and practical seawater desalination reverse osmosis water treatment device that is simple and efficient in structure, while ensuring no sedimentation and easy cleaning of the reverse osmosis membrane. Summary of the Invention

[0004] To address the shortcomings of the prior art, this invention provides a seawater desalination reverse osmosis water treatment device and method. It achieves rapid and efficient reverse osmosis treatment by cleverly cooperating the reverse osmosis plate on the piston rod and two piston plates with the treatment tank. The large turbulence prevents sedimentation and facilitates the cleaning of the reverse osmosis membrane. The structure is simple and compact.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A seawater desalination reverse osmosis water treatment device includes a base, a treatment tank, a drive motor, a piston shaft, reverse osmosis plates, an electrically controlled telescopic cylinder, and two piston plates. Two support arms are mounted on both sides of the base. The treatment tank is horizontally suspended between the two support arms. A fixed shaft is coaxially mounted on the outer side of one end of the treatment tank and rotatably connected to a pre-set shaft hole at the top of one support arm. A one-way water inlet connector is also provided at the top of the outer side of one end of the treatment tank. The drive motor is fixed to the outer side of one support arm and is drivenly connected to the fixed shaft. The piston shaft is inserted into a pre-set shaft hole at the top of the other support arm. The inner end of the piston shaft extends coaxially into the center of the other end of the treatment tank through a sealing hole. A one-way drain connector is also provided at the bottom of the outer side of the other end of the treatment tank. The two piston plates are coaxially positioned... A partition is fixed to the inner end of the piston shaft. Each piston plate has a water passage slot on its surface, and a sealing valve plate is hinged to the surface of the piston plate adjacent to the piston shaft and the corresponding area of ​​the water passage slot. An L-shaped bracket is set at the position corresponding to the movable end of the sealing valve plate on the edge of the piston plate. A compression spring is fixed inside the L-shaped bracket to elastically support the movable end of the sealing valve plate. The reverse osmosis plate is coaxially fixed to the inner end of the piston shaft and located between the two piston plates. A reverse osmosis membrane is set in the middle area of ​​the reverse osmosis plate. Sealing rings are fixed to the circumference of the reverse osmosis plate and the two piston plates respectively to fit tightly with the inner wall of the treatment tank. The electrically controlled telescopic cylinder is fixedly installed on another support arm plate. The telescopic end of the electrically controlled telescopic cylinder is detachably connected to the outer end of the piston shaft by bolts through a connector. A cleaning fluid injection port is set at the top of the outer wall of the treatment tank.

[0007] A method for treating seawater desalination reverse osmosis water includes the following steps:

[0008] Step 1: In advance, control the inner end of the piston shaft to extend into the deepest part of the treatment tank using an electronically controlled telescopic cylinder, and connect the seawater supply equipment to the one-way inlet connector of the treatment tank using an external pipeline;

[0009] Step 2: The electrically controlled telescopic cylinder extends outward and gradually pulls the piston shaft. The closed valve plates of the two piston plates cover the water tank opening, and seawater is pumped into the treatment tank and into the cavity on the side connected to the one-way water inlet connector.

[0010] Step 3: The electrically controlled telescopic cylinder shortens and gradually pushes the piston shaft back inward. The closed valve plates of the two piston plates open, and seawater passes through the reverse osmosis membrane in the middle of the reverse osmosis plate and enters the cavity on the side of the treatment tank that is connected to the one-way drain connector.

[0011] Step 4: Connect the one-way drain connector of the treatment tank to the treated water storage equipment using an external pipeline to store the water treated by reverse osmosis.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention installs a treatment tank between two support plates of the base. One end of the treatment tank is equipped with a fixed shaft connected to a drive motor for transmission. The other end of the treatment tank is equipped with a piston rod. A reverse osmosis plate and two piston plates are installed on the inner side of the piston rod. A water passage opening is opened on the surface of the piston plate, and a sealing valve plate is hinged to the corresponding area. The sealing valve plate is supported by a compression spring, so that it can only open in one direction and cover the water passage opening without external force. The piston rod is reciprocated by an electrically controlled telescopic cylinder, which can draw seawater into the treatment tank and then treat it through the reverse osmosis membrane. The structure is simple and compact, with high treatment efficiency, large turbulence and no sedimentation. Moreover, when the reverse osmosis membrane function decreases after long-term use, cleaning fluid can be added between the two piston plates through the cleaning fluid inlet. With the help of the drive motor to drive the treatment tank to rotate, the reverse osmosis membrane can be cleaned quickly and effectively. The operation is convenient. Attached Figure Description

[0013] Figure 1 This is an isometric view of the overall structure of the seawater desalination reverse osmosis water treatment device of the present invention;

[0014] Figure 2 This is an isometric view of the piston plate of the present invention. Detailed Implementation

[0015] 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. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] like Figures 1-2 As shown, a seawater desalination reverse osmosis water treatment device includes a base 1, a treatment tank 2, a drive motor 3, a piston shaft 4, a reverse osmosis plate 6, an electrically controlled telescopic cylinder 8, and two piston plates 5.

[0017] Combination Figure 1As shown, two support plates 1-1 are provided on both sides of the base 1 for mounting the treatment tank 2. The treatment tank 2 is horizontally suspended between the two support plates 1-1. A fixed shaft 2-1 is coaxially provided on the outer side of one end of the treatment tank 2 and is rotatably connected to a pre-set shaft hole at the top of one support plate 1-1. A one-way water inlet connector 2-2 is provided on the top of the outer side of one end of the treatment tank 2. The drive motor 3 is fixed on the outer side of one support plate 1-1 and is drivenly connected to the fixed shaft 2-1. Furthermore, a bracket 1-2 is installed in the middle of the base 1. The top of the bracket 1-2 is provided with four rollers arranged in a rectangle to support the bottom of the treatment tank 2, which can keep the treatment tank 2 stable during rotation and subsequent reciprocating movement of the piston shaft 4. In addition, to prevent the axial movement of the treatment tank 2 during the reciprocating movement of the piston shaft 4, a limiting protective wall can be thickened in the middle of the outer wall of the treatment tank 2. The two ends of the limiting protective wall are set to abut against the four rollers of the bracket 1-2, thereby limiting the axial misalignment of the treatment tank 2.

[0018] The piston shaft 4 is inserted into a pre-set shaft hole at the top of another support plate 1-1. The inner end of the piston shaft 4 extends coaxially into the interior of the treatment tank 2 through a sealing hole set at the center of the other end. A one-way drain connector 2-3 is connected to the bottom of the other end of the treatment tank 2. The two piston plates 5 are coaxially fixed at intervals to the inner end of the piston shaft 4. The reverse osmosis plate 6 is coaxially fixed to the inner end of the piston shaft 4 and located between the two piston plates 5. A reverse osmosis membrane 6-1 is set in the middle area of ​​the reverse osmosis plate 6. Sealing rings 7 are fixed to the circumference of the reverse osmosis plate 6 and the two piston plates 5, respectively, and fit tightly with the inner wall of the treatment tank 2. The electrically controlled telescopic cylinder 8 is fixedly installed on another support plate 1-1. The telescopic end of the electrically controlled telescopic cylinder 8 is detachably connected to the outer end of the piston shaft 4 by bolts through a connector 9. A cleaning fluid inlet 2-4 is set at the top of the outer wall of the treatment tank 2.

[0019] Combination Figure 2 As shown, each piston plate 5 has a water passage opening 5-1 on its surface, and a sealing valve plate 5-2 is hinged to the surface of the piston plate 5 adjacent to the piston shaft 4 in the area corresponding to the water passage opening 5-1. An L-shaped bracket 5-3 is provided at the edge of the piston plate 5 corresponding to the movable end of the sealing valve plate 5-2. A compression spring 5-4 is fixed inside the L-shaped bracket 5-3 to elastically support the movable end of the sealing valve plate 5-2. Preferably, two semi-circular water passage openings 5-1 are symmetrically arranged on the upper and lower surfaces of the piston plate 5 to increase the efficiency of seawater passing through the piston plate 5.

[0020] like Figures 1-2 As shown, a method for treating seawater desalination reverse osmosis water includes the following steps:

[0021] The piston shaft 4 is pre-extended into the deepest part of the treatment tank 2 by the electrically controlled telescopic cylinder 8. The seawater supply equipment is connected to the one-way inlet connector 2-2 of the treatment tank 2 via an external pipeline. Then, the electrically controlled telescopic cylinder 8 extends outward and gradually pulls the piston shaft 4. During this action, the sealing valve plates 5-2 of the two piston plates 5 cover the water passage opening 5-1, and seawater is drawn into the cavity of the treatment tank 2 that communicates with the one-way inlet connector 2-2. Then, the electrically controlled telescopic cylinder 8 shortens and gradually pushes the piston shaft 4 back inward. During this period, the movable ends of the sealing valve plates 5-2 of the two piston plates 5 will slightly open until the sealing valve plates 5-2 cover the water passage opening 5-1 again under the elastic support of the compression spring 5-4. Seawater passes through the reverse osmosis membrane 6-1 in the middle of the reverse osmosis plate 6 and enters the cavity of the treatment tank 2 that communicates with the one-way drain connector 2-3. Finally, the one-way drain connector 2-3 of the treatment tank 2 is connected to the treated water storage equipment via an external pipeline to store the water treated by reverse osmosis. In addition, after prolonged use, the function of the reverse osmosis membrane 6-1 will gradually decrease, requiring cleaning of the reverse osmosis membrane 6-1. At this time, the piston shaft 4 is moved to the cleaning liquid inlet 2-4 between the reverse osmosis plate 6 and the piston plate 5 by the electrically controlled telescopic cylinder 8. After the cleaning liquid is injected into the cleaning liquid inlet 2-4, it is sealed. The piston shaft 4 and the connecting piece 9 are disassembled, and the drive motor 3 is started to drive the treatment tank 2 to rotate, similar to a washing machine, until the reverse osmosis membrane 6-1 is cleaned.

[0022] As the piston shaft 4 drives the reverse osmosis plate 6 and the two piston plates 5 to move back and forth in the treatment tank 2, the seawater will form a large turbulence in the treatment tank 2. The continuous treatment is not only more efficient, but also avoids sedimentation problems. The overall structure is simpler and easier to implement. Moreover, the reverse osmosis membrane 6-1 is cleaned using the seawater that remains between the two piston plates 5. Only a certain concentration and dosage of concentrated cleaning solution needs to be added, without the need for external water supply, which is convenient and practical.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A seawater desalination reverse osmosis water treatment device, characterized in that: The system includes a base (1), a treatment tank (2), a drive motor (3), a piston shaft (4), a reverse osmosis plate (6), an electrically controlled telescopic cylinder (8), and two piston plates (5). Two support plates (1-1) are provided on both sides of the base (1). The treatment tank (2) is horizontally suspended between the two support plates (1-1). A fixed shaft (2-1) is coaxially provided on the outer side of one end of the treatment tank (2) and rotatably connected to a pre-set shaft hole at the top of one support plate (1-1). A one-way inlet is also provided on the top of the outer side of one end of the treatment tank (2). A water connector (2-2) is provided. The drive motor (3) is fixed to the outside of a support arm plate (1-1) and is connected to the fixed shaft (2-1) for transmission. The piston shaft (4) is inserted into a pre-set shaft hole at the top of another support arm plate (1-1). The inner end of the piston shaft (4) extends coaxially into the interior of the treatment tank (2) through a sealing hole set at the center of the other end. A one-way drain connector (2-3) is provided at the bottom of the outer side of the other end of the treatment tank (2). The two piston plates (5) are coaxially and spaced apart and fixed to the inner end of the piston shaft (4). Each piston plate (5) has a water passage opening (5-1) on its surface, and a sealing valve plate (5-2) is hinged to the surface of the piston plate (5) adjacent to the piston shaft (4) in the area corresponding to the water passage opening (5-1). An L-shaped bracket (5-3) is set at the position corresponding to the movable end of the sealing valve plate (5-2) on the edge of the piston plate (5). A compression spring (5-4) is fixed inside the L-shaped bracket (5-3) to elastically support the movable end of the sealing valve plate (5-2). The reverse osmosis plate (6) is coaxially fixed to the inner end of the piston shaft (4) and A reverse osmosis membrane (6-1) is set in the middle area of ​​the reverse osmosis plate (6) between the two piston plates (5). The circumference of the reverse osmosis plate (6) and the two piston plates (5) are respectively fixed with sealing rings (7) and tightly fitted with the inner wall of the treatment tank (2). The electrically controlled telescopic cylinder (8) is fixedly installed on another support arm plate (1-1). The telescopic end of the electrically controlled telescopic cylinder (8) is detachably connected to the outer end of the piston shaft (4) by bolts through a connector (9). A cleaning fluid inlet (2-4) is set at the top of the outer wall of the treatment tank (2).

2. The seawater desalination reverse osmosis water treatment device according to claim 1, characterized in that: The base (1) is equipped with a bracket (1-2) in the middle position, and the top of the bracket (1-2) is provided with four rollers arranged in a rectangular shape to support the bottom of the processing tank (2).

3. The seawater desalination reverse osmosis water treatment device according to claim 2, characterized in that: The outer wall of the treatment tank (2) is thickened and a limiting protective wall is provided in the middle position. The two ends of the limiting protective wall are attached to the four rollers of the bracket (1-2).

4. The seawater desalination reverse osmosis water treatment device according to claim 1, characterized in that: The piston plate (5) has two water passage openings (5-1) symmetrically arranged on its upper and lower surfaces. The water passage openings (5-1) are semi-circular.

5. A method for treating seawater desalination reverse osmosis water, characterized in that: The water treatment device according to claim 1, wherein the treatment method comprises the following steps: Step 1: In advance, control the inner end of the piston shaft (4) to extend into the deepest part of the treatment tank (2) by the electric telescopic cylinder (8), and connect the seawater supply equipment to the one-way water inlet connector (2-2) of the treatment tank (2) using external pipelines; Step 2: The electric telescopic cylinder (8) extends outward and gradually pulls the piston shaft (4). The closed valve plate (5-2) of the two piston plates (5) covers the water tank opening (5-1). Seawater is drawn into the treatment tank (2) and the cavity on the side connected to the one-way water inlet connector (2-2). Step 3: The electrically controlled telescopic cylinder (8) shortens and gradually pushes the piston shaft (4) back inward. The closed valve plates (5-2) of the two piston plates (5) open, and the seawater passes through the reverse osmosis membrane (6-1) in the middle of the reverse osmosis plate (6) and enters the cavity on the side of the treatment tank (2) that is connected to the one-way drain connector (2-3). Step 4: Connect the one-way drain connector (2-3) of the treatment tank (2) to the treated water storage equipment using external pipelines to store the water treated by reverse osmosis.

6. The processing method according to claim 5, characterized in that: When the reverse osmosis membrane (6-1) needs cleaning, the piston shaft (4) is moved to the cleaning liquid inlet (2-4) between the reverse osmosis plate (6) and the piston plate (5) by the electric telescopic cylinder (8). After the cleaning liquid is injected through the cleaning liquid inlet (2-4), it is sealed. The piston shaft (4) and the connector (9) are disassembled, and the drive motor (3) is started to drive the treatment tank (2) to rotate until the cleaning is completed.

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