Trace substance enrichment filter

Abstract

The trace substance enrichment filter sequentially comprises a filter support, a flow guide assembly, a plurality of sets of filter assemblies and a bottom plate which are coaxially arranged from top to bottom, the filter support comprises a top plate, a plurality of supporting rings are fixedly connected to the periphery of the bottom of the top plate in a surrounding mode, the flow guide assembly comprises an annular flow guide frame, and the flow guide frame is fixedly connected with the bottom of the top plate in a surrounding mode. A flow guide plate is installed in the flow guide frame, each group of filtering assemblies comprises an annular filtering frame, a filtering supporting plate is installed in the filtering frame, a filtering membrane is laid on the top of the filtering supporting plate, a water outlet is formed in the bottom plate, and a plurality of screw rods extending vertically and upwards are arranged on the periphery of the top of the bottom plate; and each screw rod sequentially penetrates through the plurality of filtering frames, the flow guide frame, the supporting ring and the top plate and is screwed and fixed with a nut. According to the device, trace substances can be directly filtered and enriched within 6000 meters underwater, the process of collecting a large amount of seawater to a laboratory is omitted, and the device is convenient to operate and high in working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of deep-sea trace material enrichment, and more specifically, to a trace material enrichment filter. Background Art

[0002] Trace substances in seawater refer to substances with a concentration lower than 0.001 mg / L in seawater. The content is very small and must be enriched before detection. When determining trace substances in large-volume water samples, the enrichment multiple often needs to be very high. With existing analytical techniques, it is necessary to first extract a large volume of seawater at the sampling point, generally requiring dozens or even thousands of liters of seawater, and then transport it back to the laboratory for separation and enrichment to achieve the sensitivity of existing analytical instruments. The process is complicated and inefficient. This will consume a lot of manpower, financial resources and time, and it is impossible to perform in-situ measurements. During transportation and storage, it is easy to cause sample contamination and it is impossible to obtain accurate analysis results. In the prior art, a rapid enrichment device for trace substances in water is disclosed in the patent with authorization announcement number CN219377189U, which realizes the enrichment of trace substances in drinking water by centrifugal operation, but it cannot be applied underwater, is difficult to work in the deep ocean, and is not suitable for the enrichment and filtration of trace substances in the deep ocean. Utility Model Content

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described below.

[0004] Another purpose of the utility model is to provide a trace substance enrichment filter, which can directly filter and enrich trace substances in the deep sea, thereby effectively improving work efficiency.

[0005] In order to achieve these purposes and other advantages according to the utility model, a trace substance enrichment filter is provided, which includes, from top to bottom, a coaxially arranged filter bracket, a guide assembly, multiple groups of filter assemblies, and a bottom plate, wherein the filter bracket includes a top plate, a bottom circumferential edge of the top plate is surrounded and fixedly connected with a plurality of support rings, the guide assembly includes an annular guide frame, a guide plate is installed in the guide frame, each group of filter assemblies includes an annular filter frame, a filter support plate is installed in the filter frame, a filter membrane is laid on the top of the filter support plate, a water outlet is opened on the bottom plate, and a plurality of screws extending vertically upward are arranged on the top circumferential edge of the bottom plate, each screw passes through a plurality of filter frames, guide frames, support rings and top plates in sequence and is tightened and fixed with a nut.

[0006] Preferably, the guide plate is a honeycomb guide plate.

[0007] Preferably, the guide plate is made of titanium metal material.

[0008] Preferably, the materials and pore sizes of the filter membranes in the multiple groups of filter components are different.

[0009] Preferably, an annular sealing ring is provided between the guide frame, the plurality of filter frames and the bottom plate.

[0010] Preferably, the bottom peripheral edges of the guide frame and the multiple filter frames are provided with annular grooves, and the top peripheral edges of the multiple filter frames and the bottom plate are provided with annular ridges. The guide frame, the multiple filter frames and the bottom plate are coaxially stacked so that the multiple ridges are respectively accommodated in the corresponding grooves, and a receiving cavity for the sealing ring to be embedded is formed between the corresponding ridges and the grooves.

[0011] Preferably, the inner side wall of each filter frame is surrounded by an annular limiting ridge extending inwardly perpendicular to the side wall, the inner diameter of the filter frame is larger than the diameter of the filter support plate and larger than the inner diameter of the annular limiting ridge, and the bottom peripheral edge of the filter support plate overlaps the annular limiting ridge.

[0012] Preferably, the interval between the uppermost filter membrane and the bottom of the guide plate is 4 to 6 mm.

[0013] Preferably, a plurality of pillars are installed at the bottom of the base plate, and the water outlet is connected to a water pump through a pipeline.

[0014] The utility model at least has the following beneficial effects:

[0015] First, the trace substance enrichment filter of the utility model is simple to operate and easy to use, and can directly filter and enrich trace substances within 6000 meters underwater, eliminating the process of collecting a large amount of seawater to the laboratory, and effectively improving work efficiency.

[0016] Second, the multiple filter components in the utility model can be equipped with filter membranes of different specifications and materials, which can carry out targeted enrichment and filtration of trace substances, and the enrichment effect is good.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a planar cross-sectional view of a technical solution of the utility model;

[0019] Figure 2 It is a three-dimensional cross-sectional view of a technical solution of the utility model. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, so that those skilled in the art can implement the invention with reference to the description.

[0021] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0022] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood in specific circumstances. The orientation or position relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0023] like Figures 1-2 As shown, the utility model provides a trace substance enrichment filter, which includes a coaxially arranged filter bracket, a guide assembly, multiple groups of filter assemblies, and a bottom plate 110 from top to bottom, wherein the filter bracket includes a top plate 100, and a plurality of support rings 101 are fixedly connected around the bottom circumference of the top plate 100, the guide assembly includes an annular guide frame 102, and a guide plate 103 is installed in the guide frame 102, each group of filter assemblies includes an annular filter frame 104, and a filter support plate 105 is installed in the filter frame 104, and a filter membrane 106 is laid on the top of the filter support plate 105, a water outlet 107 is opened on the bottom plate 110, and a plurality of screws 108 extending vertically upward are arranged on the top circumference of the bottom plate 110, and each screw 108 passes through a plurality of filter frames 104, the guide frame 102, the support ring 101 and the top plate 100 in sequence and is tightened and fixed with a nut 109.

[0024] The trace substance enrichment filter provided in the technical solution comprises a coaxially stacked top plate 100, an annular flow guide frame 102, a plurality of annular filter frames 104 and a bottom plate 110, wherein a plurality of support rings 101 are connected between the top plate 100 and the flow guide frame 102, through holes corresponding to the plurality of support rings 101 are provided on the top plate 100, the flow guide frame 102 and the filter frame 104, and a screw rod 108 extending vertically upward is provided on the top circumference of the bottom plate 110, each screw rod 108 passes through a corresponding through hole, and a nut 109 is tightened on the top thereof to clamp and fix each component. A flow guide plate 103 is provided in the flow guide frame 102, and a filter support plate 105 is installed in each filter frame 104, and the filter support plate 105 is made of a porous water-permeable plastic, and a filter membrane 106 is covered on the filter support plate 105, and a vertically through water outlet 107 is provided on the bottom plate 110. A cylindrical groove 300 may be provided on the top of the bottom plate, a filter support plate 105 and a filter membrane 106 may be installed on the top of the cylindrical groove 300 , and the water outlet 107 is communicated with the cylindrical groove 300 .

[0025] When in use, the water outlet 107 is connected to the pump, and the pump is turned on. The seawater enters the guide plate 103 through the water inlet of the flat layer formed between the top plate 100 and the guide plate 103 under the action of negative pressure, and then the seawater flows in and is evenly distributed on the surface of the entire filter membrane 106. The seawater filtered by the multi-layer filter membrane 106 continues to flow downward out of the water outlet 107. After the work is completed, the filter bracket and multiple groups of filter components are removed, and the multiple filter membranes 106 are removed for analysis. In this technical solution, the top plate 100 and the guide component are separated by multiple support rings 101, so that the seawater flows horizontally above the guide plate 103, and then the guide plate 103 is used to straighten the water flow and suppress turbulence. Ensure that the seawater on the filter membrane 106 is uniform and smooth, and improve the filtration efficiency of the filter membrane 106; set up multiple groups of filter components, perform multi-layer filtration on the seawater, and improve the enrichment efficiency; multiple groups of filter components can be installed with filter membranes of different specifications and materials to improve the filtration and enrichment effects. The device can directly filter and enrich trace substances within 6,000 meters underwater, eliminating the process of collecting large amounts of seawater to the laboratory for work. It is simple to operate and easy to use, effectively improving work efficiency.

[0026] In another technical solution, the guide plate 103 is a honeycomb guide plate. In this technical solution, the selection of the honeycomb guide plate can straighten the water flow entering the device and effectively suppress turbulence, thereby improving the filtering effect of multiple groups of filter components.

[0027] In another technical solution, the guide plate 103 is made of titanium metal. In this technical solution, the guide plate 103 can be made of titanium metal, which will not deform within 6000 meters underwater and has good pressure resistance.

[0028] In another technical solution, the materials and pore sizes of the filter membranes 106 in the multiple filter components are different. In this technical solution, different filter membranes can be equipped in the multiple filter components to carry out targeted enrichment of trace substances. For example, 0.2μm, 0.4μm, 0.8μm, 1μm polycarbonate polyester film, 0.8μm GF / F membrane, etc. are selected for trace substances.

[0029] In another technical solution, an annular sealing ring 200 is provided between the guide frame 102, the plurality of filter frames 104 and the bottom plate 110. In this technical solution, an annular sealing ring 200 is provided to ensure the sealing between the guide frame 102, the plurality of filter frames 104 and the bottom plate 110, to prevent seawater from entering the device through the gaps between the components, and to avoid affecting the enrichment and filtration effect.

[0030] In another technical solution, the bottom peripheries of the flow guide frame 102 and the plurality of filter frames 104 are provided with annular grooves, and the top peripheries of the plurality of filter frames 104 and the bottom plate 110 are provided with annular convex ridges 201. The flow guide frame 102, the plurality of filter frames 104 and the bottom plate 110 are coaxially stacked, so that the plurality of convex ridges 201 are respectively accommodated in the corresponding grooves, and an accommodating cavity 202 for the sealing ring 200 to be inserted is formed between the corresponding convex ridges 201 and the grooves. In this technical solution, matching grooves and convex ridges 201 are provided to facilitate the positioning and installation of each component, and the annular sealing ring 200 is inserted between the corresponding grooves and convex ridges 201, thereby ensuring the sealing between the flow guide frame 102, the plurality of filter frames 104 and the bottom plate 110.

[0031] In another technical solution, an annular limiting rib 203 extending inwardly perpendicular to the side wall is arranged around the inner side wall of each filter frame 104, the inner diameter of the filter frame 104 is larger than the diameter of the filter support plate 105, and larger than the inner diameter of the annular limiting rib 203, and the bottom peripheral edge of the filter support plate 105 overlaps the annular limiting rib 203. In this technical solution, the filter support plate 105 overlaps the annular limiting rib 203, which is convenient for installation and disassembly, and provides support for the filter membrane.

[0032] In another technical solution, the interval between the uppermost filter membrane 106 and the bottom of the guide plate 103 is 4 to 6 mm.

[0033] In another technical solution, a plurality of pillars 204 are installed at the bottom of the bottom plate 110, and the water outlet 107 is connected to a water pump through a pipeline. In this technical solution, a plurality of pillars are arranged at the bottom of the bottom plate 110 to support the trace substance enrichment filter, and the water outlet 107 is connected to the water pump. When the water pump is turned on, negative pressure is generated to force the seawater to pass through the guide plate 103 and sequentially pass through multiple groups of filter components for filtration and enrichment.

[0034] Before using the trace substance enrichment filter of the present invention, it is necessary to ensure that the water pump and the filter bracket are filled with water. The water filling is to remove the gas remaining in the pipeline of the device. During the filling period, the filter membrane 106 should be placed in the filter assembly.

[0035] The specific installation steps are as follows:

[0036] 1. Unscrew the nut 109 located on the top of the trace substance enrichment filter;

[0037] 2. Remove the top plate 100 and the filter components except the bottom layer;

[0038] 3. Fully moisten both sides of the filter membrane 106 with distilled water, and place the bottom layer of the filter membrane 106 on the filter support plate 105, ensuring that the filter membrane 106 is in direct contact with the filter support plate 105 instead of floating on the water;

[0039] 4. Sleeve the secondary filter frame 104 onto the multiple screws 108 and install the secondary filter support plate 105;

[0040] 5. Pour distilled water into the filter holder 104 until the inside is full of water;

[0041] 6. Place the secondary filter membrane 106 on top of the filter support plate 105;

[0042] 7. Install the remaining filter components in sequence;

[0043] 8. Ensure that the filter membrane 106 is flat and located in the center of the filter frame 104;

[0044] 9. Sleeve the filter bracket onto the multiple screw rods 108, tighten the top nut 109, clamp and fix the multiple components, and prevent the sealing of the annular sealing ring 200 from being damaged.

[0045] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A trace substance enrichment filter, characterized in that: From top to bottom, it includes a coaxially arranged filter bracket, a guide assembly, multiple groups of filter assemblies, and a bottom plate, wherein the filter bracket includes a top plate, a bottom circumference of the top plate is surrounded and fixedly connected with multiple support rings, the guide assembly includes an annular guide frame, a guide plate is installed in the guide frame, each group of filter assemblies includes an annular filter frame, a filter support plate is installed in the filter frame, a filter membrane is laid on the top of the filter support plate, a water outlet is opened on the bottom plate, and a plurality of screws extending vertically upward are arranged on the top circumference of the bottom plate, each screw passes through multiple filter frames, guide frames, support rings and top plates in sequence and is tightened and fixed with a nut.

2. The trace substance enrichment filter according to claim 1, characterized in that: The guide plate is a honeycomb guide plate.

3. The trace substance enrichment filter according to claim 2, characterized in that: The guide plate is made of titanium metal material.

4. The trace substance enrichment filter according to claim 1, characterized in that: The materials and pore sizes of the filter membranes in the multiple filter components are different.

5. The trace substance enrichment filter according to claim 1, characterized in that: Annular sealing rings are arranged between the flow guide frame, the plurality of filter frames and the bottom plate.

6. The trace substance enrichment filter according to claim 5, characterized in that: The bottom peripheries of the guide frame and the multiple filter frames are all provided with annular grooves, and the top peripheries of the multiple filter frames and the bottom plate are all provided with annular convex ridges. The guide frame, the multiple filter frames and the bottom plate are coaxially stacked so that the multiple convex ridges are respectively accommodated in the corresponding grooves, and an accommodating cavity for the sealing ring to be embedded is formed between the corresponding convex ridges and the grooves.

7. The trace substance enrichment filter according to claim 1, characterized in that: The inner side wall of each filter frame is surrounded by an annular limiting edge extending inwardly perpendicular to the side wall. The inner diameter of the filter frame is larger than the diameter of the filter support plate and larger than the inner diameter of the annular limiting edge. The bottom peripheral edge of the filter support plate overlaps the annular limiting edge.

8. The trace substance enrichment filter according to claim 1, characterized in that: The interval between the filter membrane located at the top layer and the bottom of the guide plate is 4 to 6 mm.

9. The trace substance enrichment filter according to claim 1, characterized in that: A plurality of pillars are installed at the bottom of the base plate, and the water outlet is connected to a water pump through a pipeline.

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