A manual seawater desalination device

Abstract

This utility model discloses a manual seawater desalination device, comprising an inlet chamber, a pretreatment chamber, and an RO chamber. The inlet chamber is equipped with a movable piston assembly, and an inlet is located on one side of the inlet chamber, connected to a water intake pipe. The pretreatment chamber contains a filter sand layer and a security filter. A check valve is installed between the pretreatment chamber and the RO chamber. The RO chamber contains an RO membrane, and the bottom of the RO chamber has a product water outlet and a concentrate outlet, which are respectively connected to a product water pipe and a concentrate pipe. This utility model features separate chambers for easy maintenance, durability, and reliability; stable operation is achieved simply by disassembling the chambers and replacing internal consumables. Its compact size allows for placement in confined spaces, and its simple operation allows for freshwater production through manual operation or modification to convert manual operation into mechanical operation.

Description

Technical Field

[0001] This utility model relates to the field of seawater desalination, and in particular to a manual seawater desalination device. Background Technology

[0002] In some areas where mechanical equipment is limited, traditional water intake methods often rely on groundwater wells or simple distillation devices. However, the high hardness and high salinity of these inferior water sources make it difficult to meet domestic water needs. Although reverse osmosis (RO) technology can theoretically solve water quality problems, traditional RO systems require complex electromechanical equipment such as high-pressure pumps, inter-stage pumps, and energy recovery devices. This not only results in high construction costs but also presents challenges in maintenance, requiring specialized expertise and posing difficulties in replacing consumables. Especially in special application scenarios such as ship rescue and remote areas, the large size of the equipment and its dependence on power supply severely restrict its widespread application. Therefore, developing a manually operable and easily maintained seawater desalination device is an urgent problem to be solved. Utility Model Content

[0003] The purpose of this invention is to provide a manual seawater desalination device that solves or partially solves the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A manual seawater desalination device includes an inlet chamber, a pretreatment chamber, and an RO chamber, which are interconnected. A movable piston assembly is installed on the inlet chamber, and an inlet is located on one side of the inlet chamber, connected to a water intake pipe. The pretreatment chamber is located below the inlet chamber and contains a filter sand layer and a security filter. The RO chamber is located below the pretreatment chamber, and a check valve is installed between the pretreatment chamber and the RO chamber. An RO membrane is installed inside the RO chamber, and a product water outlet and a concentrate outlet are located at the bottom of the RO chamber, connected to a product water pipe and a concentrate pipe, respectively.

[0006] Preferably, the piston assembly includes a piston that can move up and down inside the water inlet chamber, and a handle push rod that passes through the water inlet chamber is connected to the top of the piston.

[0007] Preferably, the filter sand layer includes a fine filter sand layer and a coarse filter sand layer, and the coarse filter sand layer, the fine filter sand layer and the security filter are arranged from top to bottom in the pretreatment chamber.

[0008] Preferably, the security filter is a filter element with a pore size of 10-50 μm.

[0009] Preferably, the inlet chamber is connected to the pretreatment chamber, and the pretreatment chamber and the RO chamber are all connected by flange gasket bolts.

[0010] Preferably, both the water intake pipe and the water production pipe are equipped with check valves.

[0011] The advantages of this utility model are: the various cavities of this utility model are separate and easy to maintain, durable and reliable. It can be used stably by simply disassembling the cavity and replacing the internal consumables; this utility model is small in size and can be placed in a small space. It is easy to operate and can produce fresh water by manual operation. It can also be modified to change manual operation into mechanical operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] The components include: inlet chamber 1, inlet 11, pretreatment chamber 2, filter sand layer 21, fine filter sand layer 211, coarse filter sand layer 212, security filter 22, RO chamber 3, RO membrane 31, product water outlet 32, concentrate outlet 33, piston assembly 4, piston 41, handle push rod 42, water intake pipe 5, check valve 6, product water pipe 7, concentrate pipe 8, and flange 9. Detailed Implementation

[0014] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0015] In the description of this utility model, it should be noted that the terms "inner", "outer", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] like Figure 1As shown, this utility model provides a manual seawater desalination device, which includes an inlet chamber 1, a pretreatment chamber 2, and an RO chamber 3, which are interconnected. A movable piston assembly 4 is provided on the inlet chamber 1. The piston assembly 4 includes a piston 41 that can move up and down inside the inlet chamber 1. A handle push rod 42 that penetrates the inlet chamber 1 is connected to the top of the piston 41. In use, the piston 41 can be moved using the handle push rod 42 to achieve water intake or water production. An inlet 11 is provided on one side of the inlet chamber 1, which is connected to a water intake pipe 5 for taking seawater or brine. A check valve 6 is provided on the water intake pipe. When the handle push rod 42 is pulled up, causing the piston 41 to move upward in the water inlet chamber 1, seawater or saltwater enters the water inlet chamber 1 through the water intake pipe 5, pushing the piston downward. The seawater or saltwater in the water inlet chamber 1 can only move forward into the processing chamber 2 due to the check valve 6 on the water intake pipe 5.

[0017] Furthermore, the pretreatment chamber 2 is located below the inlet chamber 1, and the pretreatment chamber 2 contains a filter sand layer 21 and a security filter 22. The filter sand layer 21 includes a fine filter sand layer 211 and a coarse filter sand layer 212, arranged from top to bottom within the pretreatment chamber 2. The fine filter sand layer 211 and the coarse filter sand layer 212 can be made of quartz sand with different particle sizes, and the security filter 22 is a polypropylene filter element with a pore size of 10-50 μm, for preliminary filtration of seawater or brackish water to remove solid particles.

[0018] Furthermore, the RO chamber 3 is located below the pretreatment chamber 2, and a check valve 6 is installed between the pretreatment chamber 2 and the RO chamber 3 to prevent back pressure caused by misoperation from damaging the RO membrane 31. The RO membrane 31 is installed inside the RO chamber 3, and a product water outlet 32 ​​and a concentrate outlet 33 are installed at the bottom of the RO chamber 3. The product water outlet 32 ​​and the concentrate outlet 33 are connected to the product water pipe 7 and the concentrate pipe 8, respectively. A check valve 6 is installed on the product water pipe 7 to further ensure the safety of the RO membrane 31 and prevent the RO membrane 31 from being damaged by back pressure.

[0019] Furthermore, the water inlet chamber 1 of this utility model is connected to the pretreatment chamber 2, and the pretreatment chamber 2 and RO chamber 3 are all connected by flange 9 and bolts and nuts.

[0020] During installation, the RO membrane 31 is first inserted into the bottom of the RO chamber 3, followed by the check valve 6. The RO chamber 3 and the pretreatment chamber 2 are then connected via flanges. A security filter 22 is added to the bottom of the pretreatment chamber 2, followed by a fine filter sand layer 211 and then a coarse filter sand layer 212. The main body is then installed by connecting the inlet chamber 1 (with handle push rod 42 and piston 41) and the pretreatment chamber 2 via flanges. Finally, the water intake pipe 5, product water pipe 7, and concentrate pipe 8 are connected to the check valve 6 to complete the installation of the entire manual seawater desalination device.

[0021] After installation, the piston 41 is first pushed to the bottom of the inlet chamber 1 using the handle push rod 42. The water intake pipe 5 is then inserted into seawater or saltwater. The piston 41 is then pulled up using the handle push rod 42, allowing seawater or saltwater to enter the inlet chamber 1 through the inlet pipe 5. When the piston 41 is at its maximum and the inlet chamber 1 is full, the product water pipe 7 is placed in the product water container. Pushing the piston 41 at this point causes the liquid in the inlet chamber 1 to be forced forward into the treatment chamber 2 by the check valve 6 on the inlet pipe 5. After passing through the coarse sand filter layer 212, the fine sand filter layer 211, and the security filter 22, the solid particles are removed, and the water continues to flow into the RO chamber 3. Since the osmotic pressure of seawater is approximately 2.5-3.0 MPa, the piston 41 can be continuously pushed with a force of approximately 30 kg (294 N) to draw water from the product water end of the product water pipe 7. If the TDS of the water is high, the product water can be repeatedly introduced into the inlet chamber 1 in the same way for reverse osmosis treatment to obtain usable fresh water.

[0022] This invention utilizes a small RO membrane 31 to directly treat seawater or brackish water. Water is manually extracted and then subjected to reverse osmosis treatment to obtain fresh water. The seawater osmotic pressure is approximately 25 kg. A handle pusher 42 pushes the piston 41, allowing the operator to pump water into the RO membrane 31, with concentrated water and permeate discharged separately. When the brackish water concentration is too high, the permeate can be manually pumped back for reverse osmosis treatment, improving the permeate utilization rate. This invention features separate chambers for easy maintenance, durability, and reliability; simply disassembling the chambers and replacing internal consumables ensures stable operation. Its compact size allows for placement in confined spaces, and its simple operation allows for fresh water production through manual operation or modification to convert manual operation into mechanical operation.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A manual seawater desalination device, characterized in that: It includes an inlet chamber, a pretreatment chamber, and an RO chamber, which are interconnected. A movable piston assembly is installed on the inlet chamber, and an inlet is located on one side of the inlet chamber, connected to a water intake pipe. The pretreatment chamber is located below the inlet chamber and contains a filter sand layer and a security filter. The RO chamber is located below the pretreatment chamber, and a check valve is installed between the pretreatment chamber and the RO chamber. An RO membrane is installed inside the RO chamber, and a product water outlet and a concentrate outlet are located at the bottom of the RO chamber, connected to a product water pipe and a concentrate pipe, respectively.

2. The manual seawater desalination device according to claim 1, characterized in that: The piston assembly includes a piston that can move up and down inside the water inlet chamber, and a handle push rod that passes through the water inlet chamber is connected to the top of the piston.

3. The manual seawater desalination device according to claim 1, characterized in that: The filter sand layer includes a fine filter sand layer and a coarse filter sand layer, and the coarse filter sand layer, the fine filter sand layer and the security filter are arranged from top to bottom in the pretreatment chamber.

4. The manual seawater desalination device according to claim 3, characterized in that: The security filter is a filter element with a pore size of 10-50μm.

5. The manual seawater desalination device according to claim 1, characterized in that: The inlet chamber is connected to the pretreatment chamber, and the pretreatment chamber and the RO chamber are all connected by flange gaskets and bolts.

6. The manual seawater desalination device according to claim 1, characterized in that: Both the water intake pipe and the water production pipe are equipped with check valves.

Images