A seawater detection filtering device

Abstract

The utility model relates to seawater detection filtering technical field discloses a seawater detection filtering device, including the casing and filter membrane lid, filter membrane lid screw -thread formula is connected in the bottom of casing, the top of casing is connected with the top plate of contact type, the top of top plate fixed formula is connected with the water inlet, the bottom of top plate fixed formula is connected with the filter screen, and the filter screen is located in the inside of casing, and the water inlet is linked with the inside of filter screen, the inside of filter membrane lid is provided with the microfiltration membrane, the bottom of filter membrane lid fixed formula is connected with the water outlet, and the bottom of filter screen is provided with the metal screen, is used for intercepting plankton, larger silt particle etc. Coarse impurity, prevent unfiltered seawater from flowing into the next link directly, secondary filtration: seawater reaches the inside of filter membrane lid through spiral flow guide plate, and the inside of filter membrane lid is provided with the microfiltration membrane, and the aperture is generally above 0.05um, is mainly used for removing colloid, macromolecular organic matter etc. Ensure that the seawater clarity after filtration satisfies the detection requirement.

Description

Technical Field

[0001] This utility model relates to the field of seawater detection and filtration technology, specifically a seawater detection and filtration device. Background Technology

[0002] In fields such as marine environmental monitoring and marine resource development, seawater testing and filtration devices serve as core equipment, undertaking the task of filtering suspended particulate matter and impurities in seawater samples. Their performance directly affects the accuracy of test data and the safety of marine development. For example, in nearshore pollution monitoring, the filtration device must completely remove particulate matter with a diameter greater than 0.45μm from seawater samples to ensure the reliability of heavy metal and pollutant concentration test results.

[0003] Existing filter devices require cleaning after prolonged use. However, the existing filter devices are of a single, integrated structure, making it inconvenient to disassemble and open them, thus hindering the cleaning of their internal components.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing seawater testing and filtration devices. Utility Model Content

[0005] To address the technical problem that existing filtration devices are integral structures, making disassembly and opening inconvenient and thus hindering internal cleaning, this utility model provides a seawater detection and filtration device.

[0006] This utility model is achieved using the following technical solution: a seawater detection and filtration device, comprising a housing and a filter membrane cover, wherein the filter membrane cover is threadedly connected to the bottom of the housing, a top plate is contacted to the top of the housing, an inlet is fixedly connected to the top of the top plate, a filter screen is fixedly connected to the bottom of the top plate, the filter screen is located inside the housing, the inlet is connected to the inside of the filter screen, a microfiltration membrane is disposed inside the filter membrane cover, an outlet is fixedly connected to the bottom of the filter membrane cover, a plug is fixedly connected to the bottom of the top plate, a slot is machined on the top of the housing, and the plug is inserted into the inside of the slot.

[0007] Preferably, a spiral guide plate is fixedly connected inside the housing, the spiral guide plate is located below the filter screen, and the bottom of the spiral guide plate is located above the microfiltration membrane.

[0008] Preferably, the bottom of the housing is machined with external threads, the inner wall of the filter membrane cover is machined with internal threads, and the external threads are threadedly connected inside the internal threads.

[0009] Preferably, the bottom of the filter membrane cover is provided with a drain hole, and the microfiltration membrane is located above the drain hole.

[0010] Preferably, a movable block is provided at the outer top of the housing, and a limiting pin is fixedly connected to one side of the movable block, while the limiting pin is movably connected inside the housing.

[0011] Preferably, a limiting hole is machined on one side of the insert block, and the limiting pin is inserted into the limiting hole.

[0012] Preferably, a return spring is provided on the outside of the limiting pin, one end of the return spring is fixedly connected to the outside of the housing, and the other end of the return spring is fixedly connected to the inside of the movable block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In use, this utility model employs a two-stage filtration system. The first stage involves a metal mesh at the bottom of the filter screen to intercept coarse impurities such as plankton and larger sediment particles, preventing unfiltered seawater from flowing directly into the next stage. The second stage involves seawater passing through a spiral guide plate to the inside of the filter membrane cover, where a microfiltration membrane with a pore size generally above 0.05 μm is installed. This membrane is primarily used to remove colloids, high-molecular-weight organic matter, etc., ensuring that the clarity of the filtered seawater meets testing requirements.

[0015] In use, this invention features a spiral guide plate that slows down seawater as it passes over the surface of the spiral guide plate, thus preventing damage to the microfiltration membrane caused by excessively high local flow velocity.

[0016] In use, this utility model has external and internal threads, which allows the filter membrane cover to be rotated and disassembled, making it convenient and quick to replace and clean the filter membrane cover.

[0017] When in use, by pulling the movable block outward, the movable block will drive the limiting pin to move, causing one end of the limiting pin to disengage from the inside of the limiting hole. Then, the top plate will move upward, causing the filter screen to move upward and disengage from the inside of the housing, making it convenient and quick to replace and clean the filter screen. Attached Figure Description

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

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is a cross-sectional view of the housing and filter membrane cover of this utility model;

[0021] Figure 4 This is a schematic diagram of the position structure of the insert and slot of this utility model.

[0022] In the diagram: 1. Shell; 2. Filter membrane cover; 3. Inlet; 4. Top plate; 5. Filter screen; 6. Outlet; 7. External thread; 8. Internal thread; 9. Spiral guide plate; 10. Microfiltration membrane; 11. Drain hole; 12. Insert block; 13. Slot; 14. Movable block; 15. Limit pin; 16. Limit hole; 17. Return spring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example 1: Please refer to Figure 1 - Figure 4 This embodiment of a seawater detection and filtration device includes a housing 1 and a filter membrane cover 2. The filter membrane cover 2 is threadedly connected to the bottom of the housing 1. The top of the housing 1 is connected to a top plate 4. The top of the top plate 4 is fixedly connected to a water inlet 3. The bottom of the top plate 4 is fixedly connected to a filter screen 5. The filter screen 5 is located inside the housing 1. The water inlet 3 is connected to the inside of the filter screen 5. A microfiltration membrane 10 is disposed inside the filter membrane cover 2. The bottom of the filter membrane cover 2 is fixedly connected to a water outlet 6. The bottom of the top plate 4 is fixedly connected to a plug 12. The top of the housing 1 is machined with a slot 13. The plug 12 is plugged into the slot 13. The bottom of the filter membrane cover 2 is machined with a drain hole 11. The microfiltration membrane 10 is located above the drain hole 11.

[0025] The shell 1 is a cylindrical transparent shell made of 316 stainless steel or polytetrafluoroethylene that is resistant to seawater corrosion. The top of the shell 1 is provided with a top plate 4, and the top of the top plate 4 is fixed with an inlet 3 with a control valve for connecting the seawater sampling tube. The bottom is provided with an outlet 6 to prevent impurities from accumulating. The side of the shell 1 is reserved with an observation window to facilitate real-time monitoring of the filtration status.

[0026] Secondly, the filtration device of this utility model is divided into two stages of filtration. The first stage of filtration: a metal mesh is set at the bottom of the filter screen 5 to intercept coarse impurities such as plankton and larger silt particles, preventing unfiltered seawater from flowing directly into the next stage; the second stage of filtration: seawater passes through the spiral guide plate 9 to the inside of the filter membrane cover 2, and passes through the microfiltration membrane 10 set inside the filter membrane cover 2. The pore size is generally above 0.05μm, which is mainly used to remove colloids, high molecular organic matter, etc., to ensure that the clarity of the filtered seawater meets the testing requirements.

[0027] Furthermore, a sampling port with a sterile sealing cap is provided at outlet 6, which can be directly connected to testing instruments, such as water quality sensors or sampling bottles, to avoid secondary pollution of seawater after filtration; the bottom of outlet 6 can be connected to a backwash interface for connecting a high-pressure clean water pipe. When the filter screen is clogged, impurities can be flushed back to extend the service life of the filter media.

[0028] Furthermore, a spiral guide plate 9 is fixedly connected inside the shell 1. The spiral guide plate 9 is located below the filter screen 5, and the bottom of the spiral guide plate 9 is located above the microfiltration membrane 10. By setting the spiral guide plate 9, the seawater slows down when passing through the surface of the spiral guide plate 9, thus avoiding damage to the microfiltration membrane 10 caused by excessive local flow velocity.

[0029] Furthermore, the bottom of the housing 1 is machined with an external thread 7, and the inner wall of the filter membrane cover 2 is machined with an internal thread 8. The external thread 7 is threadedly connected to the inside of the internal thread 8. By setting the external thread 7 and the internal thread 8, it is convenient to quickly replace and clean the filter membrane cover 2.

[0030] Furthermore, a movable block 14 is provided at the top outer surface of the housing 1. A limiting pin 15 is fixedly connected to one side of the movable block 14. The limiting pin 15 is movably connected inside the housing 1. A limiting hole 16 is machined on one side of the insert block 12. The limiting pin 15 is plugged into the limiting hole 16.

[0031] When the filter screen 5 needs to be removed, pull the movable block 14 outward. The movable block 14 will drive the limit pin 15 to move, so that one end of the limit pin 15 is disengaged from the inside of the limit hole 16. Then move the top plate 4 upward. The top plate 4 will drive the insert block 12 to disengage from the inside of the slot 13. At the same time, the top plate 4 will drive the filter screen 5 to move upward and disengage from the inside of the housing 1, which is convenient for quick cleaning and replacement.

[0032] Furthermore, a return spring 17 is provided on the outside of the limiting pin 15. One end of the return spring 17 is fixedly connected to the outside of the housing 1, and the other end of the return spring 17 is fixedly connected to the inside of the movable block 14. With the return spring 17 provided, when the movable block 14 is pulled, the movable block 14 will drive the return spring 17 to stretch. When the movable block 14 is released, the return spring 17 will return to its original position and retract. The return spring 17 will drive the limiting pin 15 to move, so that the limiting pin 15 can be inserted into the inside of the limiting hole 16.

[0033] Working principle: The filtration device consists of two stages of filtration. The first stage of filtration: a metal mesh is installed at the bottom of the filter screen 5 to intercept coarse impurities such as plankton and larger silt particles, preventing unfiltered seawater from flowing directly into the next stage. The second stage of filtration: seawater passes through the spiral guide plate 9 to the inside of the filter membrane cover 2, where a microfiltration membrane 10 is installed. The pore size is generally above 0.05μm, which is mainly used to remove colloids, high molecular organic matter, etc., to ensure that the clarity of the filtered seawater meets the testing requirements.

[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A seawater detection and filtration device, comprising a housing (1) and a filter membrane cover (2), characterized in that, The filter membrane cover (2) is threadedly connected to the bottom of the housing (1). The top of the housing (1) is connected to the top plate (4). The top of the top plate (4) is fixedly connected to the water inlet (3). The bottom of the top plate (4) is fixedly connected to the filter screen (5). The filter screen (5) is located inside the housing (1). The water inlet (3) is connected to the inside of the filter screen (5). The filter membrane cover (2) is provided with a microfiltration membrane (10). The bottom of the filter membrane cover (2) is fixedly connected to the water outlet (6). The bottom of the top plate (4) is fixedly connected to the insert (12). The top of the housing (1) is machined with a slot (13). The insert (12) is plugged into the slot (13).

2. The seawater detection and filtration device according to claim 1, characterized in that, The housing (1) is internally fixedly connected to a spiral guide plate (9), which is located below the filter screen (5) and the bottom of the spiral guide plate (9) is located above the microfiltration membrane (10).

3. The seawater detection and filtration device according to claim 1, characterized in that, The bottom of the housing (1) is machined with an external thread (7), and the inner wall of the filter membrane cover (2) is machined with an internal thread (8). The external thread (7) is threadedly connected to the inside of the internal thread (8).

4. The seawater detection and filtration device according to claim 1, characterized in that, The bottom of the filter membrane cover (2) is provided with a drain hole (11), and the microfiltration membrane (10) is located above the drain hole (11).

5. The seawater detection and filtration device according to claim 1, characterized in that, The outer top of the housing (1) is provided with a movable block (14), and a limiting pin (15) is fixedly connected to one side of the movable block (14), and the limiting pin (15) is movably connected to the inside of the housing (1).

6. A seawater detection and filtration device according to claim 5, characterized in that, A limiting hole (16) is machined on one side of the insert (12), and the limiting pin (15) is plugged into the inside of the limiting hole (16).

7. A seawater detection and filtration device according to claim 6, characterized in that, The limiting pin (15) is provided with a reset spring (17) on its outside. One end of the reset spring (17) is fixedly connected to the outside of the housing (1), and the other end of the reset spring (17) is fixedly connected to the inside of the movable block (14).

Images