An environmental detection water sample filtering device

Abstract

The utility model relates to environmental detection equipment technical field, concretely relates to an environmental detection water sample filtering device, including support frame, the support frame outer wall both sides upper portion is provided with the sampling bottle that environmental water sample to be detected storage carries out, the outer wall top of support frame with sampling bottle between is provided with the filter mechanism that environmental water sample to be detected carries out filter processing, in the utility model, through the inclined filter plate and the composite filter layer who sets up to realize the ladder type removal of " big particle to small particle to colloid / microorganism", to this can effectively remove the particulate impurity in the sampling water, avoids the plugging of filter membrane, to this improves the filtering efficiency to the sampling water.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring equipment technology, specifically to an environmental monitoring water sample filtration device. Background Technology

[0002] In environmental monitoring, water sample analysis is one of the core testing items, and water sample filtration is a crucial pretreatment step. Filtration removes suspended particulate matter, algae, and other impurities from the water sample, preventing these impurities from interfering with the test results and ensuring the accuracy of the test data.

[0003] Existing water sample filtration devices have the following shortcomings: First, the filtration structure is simple, mostly single-layer filtration, which is prone to membrane clogging, resulting in low filtration efficiency; second, it is inconvenient to clean impurities, requiring the entire filtration assembly to be disassembled to clean the trapped impurities, which is cumbersome. Therefore, existing environmental testing water sample treatment equipment still has shortcomings.

[0004] In conclusion, it is necessary to invent an environmental water sample filtration device. Utility Model Content

[0005] Therefore, this utility model provides an environmental water sample filtration device to solve the problems of existing water sample filtration devices, such as inconvenience in cleaning impurities, the need to disassemble the entire filter assembly to clean the trapped impurities, and cumbersome operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an environmental water sample filtration device, comprising a support frame, sampling bottles for storing environmental water samples to be tested are arranged on the upper sides of the outer wall of the support frame, and a filtration mechanism for filtering the environmental water samples to be tested is arranged between the top of the outer wall of the support frame and the sampling bottles.

[0007] Preferably, a shock-absorbing and anti-slip pad for shock absorption and support is provided at the bottom of the outer wall of the support frame, and multiple shock-absorbing and anti-slip pads are evenly arranged in an array at the bottom of the outer wall of the support frame.

[0008] Preferably, the filtration mechanism includes a pretreatment bottle, which is disposed below the bottom of the outer wall of the sampling bottle. A filter bottle is disposed below the bottom of the outer wall of the pretreatment bottle, and a collection bottle is disposed below the bottom of the outer wall of each filter bottle. The collection bottles are installed on both sides of the top of the outer wall of the support frame.

[0009] Preferably, the outer wall sides of the support frame are fixed to the outer wall sides of the sampling bottle, pretreatment bottle and filter bottle by fixing clamps, and the sampling bottle, pretreatment bottle and filter bottle are connected by a connecting pipe.

[0010] Preferably, each of the inner wall sides of the pretreatment bottle is fixed with an inclined filter plate, the inclined filter plate is fixed in a left-high-right-low manner, and a rotating block is provided on the inner wall of the pretreatment bottle at a position corresponding to the inclined filter plate.

[0011] Preferably, the upper and lower ends of the outer wall of the rotating block are fixed with anti-slip strips, and the inner wall of the pretreatment bottle and the position corresponding to the anti-slip strip are rotatably connected to the outer wall of the anti-slip strip by opening an annular groove. A slag discharge hole for slag discharge is opened through one side of the outer wall of the rotating block.

[0012] Preferably, the filter bottle is assembled from multiple connecting tubes, and sealing caps for sealing are fixed on both the upper and lower sides of the connecting tubes.

[0013] Preferably, the inner wall side of the connecting cylinder is fixed with a composite filter layer for filtration, and the outer wall side of the connecting cylinder is provided with an external thread, and the external thread is threaded with a threaded sealing ring for filtration sealing.

[0014] The beneficial effects of this utility model are: In this invention, the inclined filter plate and composite filter layer are used to achieve the step-by-step removal of "large particles → fine particles → colloids / microorganisms", which can effectively remove particulate impurities in the sampled water, avoid clogging the filter membrane, and thus improve the filtration efficiency of the sampled water. In this invention, the pretreatment bottle only requires manual rotation of the rotating block to discharge slag without disassembling any components. The connecting cylinder in the filter bottle can be disassembled separately, so the entire filter bottle does not need to be removed when replacing the composite filter layer. This improves the cleaning efficiency of the filter mechanism and makes it more convenient for personnel to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention from the front view. Figure 2 This is a cross-sectional view of the pretreatment bottle of this utility model from the front view. Figure 3 This is a cross-sectional view of the filter bottle in this utility model from the front view. Figure 4 This is a three-dimensional structural diagram of the rotating block in this utility model.

[0016] In the diagram: 100, support frame; 110, shock-absorbing and anti-slip pad; 200, sampling bottle; 210, fixing clamp; 220, connecting pipe; 300, pretreatment bottle; 310, inclined filter plate; 320, rotating block; 321, anti-slip strip; 322, slag discharge hole; 400, filter bottle; 410, connecting cylinder; 420, composite filter layer; 430, threaded sealing ring; 500, collection bottle. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] See attached document Figures 1-4 This utility model provides an environmental water sample filtration device, including a support frame 100. The support frame 100 provides stable support for the entire device, ensuring that the relative positions of the sampling bottle 200, the filtration mechanism, and the collection bottle 500 are fixed, preventing water sample leakage or filtration interruption due to device shaking during the filtration process. The support frame 100 is made of 304 stainless steel with a thickness sufficient to bear the load. The selection criteria for 304 stainless steel are its good corrosion resistance (able to withstand common acidic and alkaline substances in water samples, such as water samples in the pH range of 2-12), high mechanical strength (able to withstand the total weight of all components), and smooth surface that is easy to clean, avoiding residual impurities. The bottom of the outer wall of the support frame 100 is provided with shock-absorbing and anti-slip pads for shock absorption. 110, Multiple shock-absorbing and anti-slip pads 110 are evenly arranged in an array on the bottom of the outer wall of the support frame 100. The shock-absorbing and anti-slip pads 110 are made of nitrile rubber, with a thickness that meets the specifications for shock absorption and anti-slip function, and a Shore hardness of 60-70A. The anti-slip coefficient of nitrile rubber is ≥0.8 (when in contact with the laboratory table surface), which can effectively prevent the device from shifting. At the same time, it has good shock absorption performance to prevent water samples from splashing out due to vibration. Sampling bottles 200 for storing environmental water samples to be tested are set on the upper sides of both sides of the outer wall of the support frame 100. The sampling bottles 200 are used to temporarily store environmental water samples to be filtered, providing a stable source of water samples for subsequent filtration. The main body material is high borosilicate glass, and the capacity is set to meet the requirements of common water sample testing. A filtration mechanism for filtering the environmental water sample is installed between the top of the outer wall of the support frame 100 and the sampling bottle 200. This filtration mechanism is the core of the device's "graded filtration" and consists of two parts: a pretreatment bottle 300 (preliminary filtration) and a filter bottle 400 (deep filtration). These two parts are connected in series via a connecting pipe 220, forming a filtration logic of "removing large particles first, then small impurities." The filtration mechanism includes a pretreatment bottle 300, which is located below the bottom of the outer wall of the sampling bottle 200. The pretreatment bottle 300 is used to remove large particulate impurities (such as silt, algae clumps, and organic residue) with a particle size ≥50μm from the water sample, preventing these impurities from clogging the composite filter layer in subsequent filter bottles and extending the service life of the deep filtration components. A filter bottle 400 is located below the bottom of the outer wall of the pretreatment bottle 300. Collection bottles 500 are installed below the bottom of the outer wall of bottle 400. The collection bottles 500 are installed on both sides of the top of the outer wall of support frame 100. The outer wall sides of support frame 100 are fixed to the outer wall sides of sampling bottle 200, pretreatment bottle 300 and filter bottle 400 by fixing clamps 210. The sampling bottle 200, pretreatment bottle 300 and filter bottle 400 are connected by connecting pipe 220. Connecting pipe 220 is used to realize the sealed transmission of water samples between modules to avoid water sample leakage or contamination during transmission. It is made of food-grade silicone tube, and quick-connect connectors (material POM, model adapted according to the inner diameter of silicone tube) are used at both ends to connect to the interface of each module. The quick-connect connector has a built-in stainless steel retaining spring. After insertion into the interface, the retaining spring automatically locks. The insertion and withdrawal force is ≥100N to ensure a firm connection. The connector and interface are sealed by silicone sealing ring to prevent water sample leakage. The fixed clamp 210 consists of an arc-shaped clamp (made of 304 stainless steel, with an inner diameter that matches the outer diameter of the sampling bottle and an arc of 180°), stainless steel bolts, and wing nuts. A 1mm thick silicone pad is pasted on the inner wall of the arc-shaped clamp to prevent scratching the outer wall of the sampling bottle when clamping, and at the same time to increase friction and prevent the sampling bottle from sliding. The clamping torque is controlled within a suitable range to ensure that the components are firmly fixed without deformation, avoiding excessive clamping that could cause the glass bottle to break or loosen and shift. Inclined filter plates 310 are fixed to the inner wall sides of the pretreatment bottle 300. The inclined filter plates 310 are fixed in a left-high, right-low configuration. The inclined filter plates 310 are made of polypropylene with a thickness sufficient for mechanical strength and a pore size of 50-100μm. After the water sample flows in from the top inlet, it flows downward along the surface of the inclined filter plate 310. Large particles of impurities are intercepted and slide along the inclined surface to the vicinity of the rotating block 320 on the right. The filtered water sample (containing particles <50μm) The liquid (material) flows through the gap below the filter plate to the bottom outlet. A rotating block 320 is provided on the inner wall of the pretreatment bottle 300 at a position corresponding to the inclined filter plate 310. The rotating block 320 is made of polypropylene, cylindrical in shape, with a diameter adapted to the inner wall of the pretreatment bottle 300 and capable of flexible rotation, and a height adapted to the height of the inner wall of the pretreatment bottle. Anti-slip strips 321 are fixed to the upper and lower ends of the outer wall of the rotating block 320. The inner wall of the pretreatment bottle 300 and the anti-slip strips 321... At corresponding positions, the anti-detachment strip 321 is rotatably connected to the outer wall of the pretreatment bottle 300 via annular grooves. The anti-detachment strip 321 is made of nitrile rubber, and its width and thickness are designed to ensure anti-detachment without affecting rotation. It is integrally molded with the rotating block through injection molding. The inner wall of the pretreatment bottle 300 has corresponding annular grooves (the size of which is adapted to the anti-detachment strip). The anti-detachment strip 321 is embedded in the annular grooves to enable the rotating block 320 to rotate without falling off. The outer wall of the rotating block 320 has a slag discharge hole 322 through it. When personnel need to discharge the waste residue filtered by the inclined filter plate 310, they can manually rotate the rotating block 320 to rotate the slag discharge hole 322 to the right side and align it with the bottom of the inclined filter plate 310. This allows the impurities filtered by the inclined filter plate 310 to be discharged. After cleaning, personnel can rotate the rotating block 320 to rotate the slag discharge hole 322 to the left side, thus reducing the possibility of sample water overflowing from the pretreatment bottle 300. The filter bottle 400 is assembled from multiple connecting cylinders 410. The filter bottle 400 is used to remove fine impurities (such as fine silt, colloidal particles, and microorganisms) with a particle size ≥0.22μm from water samples, achieving deep purification of the water sample and meeting the needs of subsequent precision testing. The filter bottle 400 is assembled from 2-4 connecting cylinders 410 (the number of cylinders can be adjusted according to the turbidity of the water sample: increase the number of cylinders for high turbidity and decrease the number of cylinders for low turbidity). Each connecting cylinder 410 is an independent unit, facilitating individual disassembly, replacement, or cleaning. Sealing caps are fixed to the upper and lower sides of each connecting cylinder 410. A composite filter layer 420 for filtration is fixed to the inner wall of each connecting cylinder 410. External threads are provided at the joints of the outer wall of each connecting cylinder 410, and threaded sealing rings 430 for filtration sealing are threadedly connected to these external threads. The connecting cylinder 410 is made of 304 stainless steel, and nitrile rubber sealing caps are fixed to both its uppermost and lower ends. The thickness is to ensure a tight seal (Shore hardness 60A). A water sample channel (diameter compatible with the connecting pipe) is located in the center of the sealing cap. A silicone sealing ring (1mm thick) is installed on the inner wall of the channel to ensure no water sample leakage after the adjacent connecting cylinders are spliced. External threads are opened at the upper and lower ends of the outer wall of the connecting cylinder 410. Adjacent connecting cylinders are connected by a threaded sealing ring 430. The threaded sealing ring 430 is made of 304 stainless steel, and the internal thread specification is compatible with the external thread of the connecting cylinder. A 1mm thick polytetrafluoroethylene sealing tape is pasted on the inner wall. The composite filter layer 420 is composed of three layers: "stainless steel filter screen → columnar activated carbon plate → precision filter membrane". The thickness of each layer is to ensure the filtration effect. It is fixed inside the connecting cylinder 410 by a polypropylene bracket. The stainless steel filter screen (first layer): material 304 stainless steel, pore size 20-30μm, mesh number 500 mesh - removes fine mud and sand particles with a particle size ≥20μm in the water sample and protects the subsequent activated carbon plate and precision filter membrane. Columnar activated carbon plate (second layer): Made of coal-based columnar activated carbon (particle size 1-2mm, iodine value ≥800mg / g, ash content ≤8%), formed by compression molding (molding pressure 5MPa) – adsorbs organic impurities (such as humic acid) and odor substances (such as sulfides) in water samples, while removing some heavy metal ions (such as... , ); Precision filter membrane (third layer): made of polyethersulfone (PES), with a pore size of 0.22-0.45μm (selectable according to testing requirements: 0.22μm for microbial testing, 0.45μm for physicochemical index testing) – removes colloidal particles and microorganisms (such as bacteria) with a particle size ≥0.22μm from water samples, ensuring that the water samples meet the requirements for precision testing; The 500 collection bottle stores purified water samples that have undergone multi-stage filtration, facilitating subsequent transfer to the testing container. The bottle has graduations on one side (minimum graduation 10mL, accuracy ±2%) for easy reading of the water sample collection volume. The bottom has a drain outlet (diameter adapted to the water sample discharge requirements, with a PTFE shut-off valve, model adapted according to the diameter) to control the discharge speed of the purified water sample and prevent direct pouring that could lead to water sample contamination.

[0019] The usage process of this utility model is as follows: Those skilled in the art can first assemble the device according to the above description, then connect all electrical equipment to an external power supply, and control the operation of the device through an external controller. The control programs of all electrical equipment are edited by the production personnel in advance before production. This utility model does not make any technical improvements here, but only assumes that it can normally meet the needs of personnel. First, personnel can add the water sample to be tested into the sampling bottle 200. Then, personnel can open the valve on the connecting pipe 220 between the sampling bottle 200 and the pretreatment bottle 300. The connecting pipe 220 can be made of flexible tubing, and its upper and lower ends can be detachably connected to the water inlets of the sampling bottle 200, pretreatment bottle 300, filter bottle 400, and collection bottle 500, allowing the sampled water to fall from the sampling bottle 200 into the pretreatment bottle 300. The pretreatment bottle 300 uses an inclined filter plate 310 to filter out large particulate impurities in the sampled water. The filtered sampled water flows into the filter bottle 400 through the connecting pipe 220 at the bottom. The filter bottle 400 can then filter the sampled water multiple times through the connecting cylinder 410, which consists of a filter screen, an activated carbon plate, and a precision filter membrane. Therefore, the sampled water falling into the filter bottle 400 can be filtered sequentially through the connecting cylinder 410. The filtered sampled water can then fall into the collection bottle 500 for storage through the pipe. After processing, the filtered sampled water can be discharged by opening the drain valve of the collection bottle 500 for further processing.

[0020] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. An environmental water sample filtration device, characterized in that: The device includes a support frame (100), sampling bottles (200) for storing environmental water samples to be tested are provided on the upper sides of the outer wall of the support frame (100), and a filtration mechanism for filtering the environmental water samples to be tested is provided between the top of the outer wall of the support frame (100) and the sampling bottles (200).

2. The environmental water sample filtration device according to claim 1, characterized in that: The bottom of the outer wall of the support frame (100) is provided with shock-absorbing and anti-slip pads (110) for shock absorption and support. Multiple shock-absorbing and anti-slip pads (110) are evenly arranged in an array at the bottom of the outer wall of the support frame (100).

3. The environmental water sample filtration device according to claim 1, characterized in that: The filtration mechanism includes a pretreatment bottle (300), which is located below the bottom of the outer wall of the sampling bottle (200). A filter bottle (400) is located below the bottom of the outer wall of the pretreatment bottle (300), and a collection bottle (500) is located below the bottom of the outer wall of each filter bottle (400). The collection bottles (500) are installed on both sides of the top of the outer wall of the support frame (100).

4. The environmental water sample filtration device according to claim 1, characterized in that: The outer wall side of the support frame (100) is fixed to the outer wall side of the sampling bottle (200), the pretreatment bottle (300) and the filter bottle (400) by fixing clamps (210), and the sampling bottle (200), the pretreatment bottle (300) and the filter bottle (400) are connected by a connecting pipe (220).

5. The environmental water sample filtration device according to claim 3, characterized in that: Inclined filter plates (310) are fixed to the inner wall side of the pretreatment bottle (300). The inclined filter plates (310) are fixed in a left-high-right-low manner. Rotating blocks (320) are provided on the inner wall of the pretreatment bottle (300) at positions corresponding to the inclined filter plates (310).

6. The environmental water sample filtration device according to claim 5, characterized in that: The upper and lower ends of the outer wall of the rotating block (320) are fixed with anti-slip strips (321). The inner wall of the pretreatment bottle (300) and the position corresponding to the anti-slip strip (321) are rotatably connected to the outer wall of the anti-slip strip (321) by opening an annular groove. A slag discharge hole (322) for slag discharge is opened through one side of the outer wall of the rotating block (320).

7. The environmental water sample filtration device according to claim 3, characterized in that: The filter bottle (400) is assembled from multiple connecting tubes (410), and the upper and lower sides of the connecting tubes (410) are fixed with sealing caps for sealing.

8. The environmental water sample filtration device according to claim 7, characterized in that: The inner wall side of the connecting cylinder (410) is fixed with a composite filter layer (420) for filtration. The outer wall side of the connecting cylinder (410) is provided with an external thread, and the external thread is threaded with a threaded sealing ring (430) for filtration sealing.

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