Eutrophicated lake water sample collection pretreatment device

Abstract

The utility model provides a eutrophicated lake water sample collection pretreatment device, which relates to the technical field of water sample collection devices, and comprises a stabilizing plate, a supporting rod, a group of tray funnels, a filter screen, a three-way pipe and a settling vat, the supporting rod is vertically arranged on the stabilizing plate, the tray funnels are arranged on the supporting rod through connecting pieces, and the filter screen is arranged on the three-way pipe. The filter screen is installed in the tray funnels, the two liquid inlet ends of the three-way pipe are connected with liquid outlets in the bottoms of the two tray funnels respectively, and the liquid outlet end of the three-way pipe is connected with the settling vat. And the problems of low filtering speed and long time consumption still exist when a water sample with high algae filtering density is filtered.

Description

Technical Field

[0001] The utility model relates to the technical field of water sample collection devices, in particular to a eutrophic lake water sample collection pre-processing device. Background Art

[0002] Lake eutrophication is a water pollution phenomenon caused by excessive content of plant nutrients such as nitrogen and phosphorus. Eutrophication is usually accompanied by an increase in algae density, leading to algae outbreaks. According to the "Technical Specifications for Surface Water Environmental Quality Monitoring" (HJ91.2-2022), "When the collected water sample contains obvious algae, all the water samples can be passed through a filter screen with a pore size of 63μm and poured into a static container. After ensuring sufficient required amount, let it stand naturally for 30 minutes, use a siphon to take the upper layer of water sample, move it into a sample bottle, and immediately add a preservative. "Since lake sampling generally needs to be operated on a boat, the current manual filtration using a funnel and filter screen has problems of shaking and inconvenient operation, and when facing water samples with high algae density, there are also problems of slow filtration speed and long time consumption. Therefore, this application proposes a pretreatment device for collecting eutrophic lake water samples. Utility Model Content

[0003] In order to overcome the problems in the background technology, the utility model provides a pre-treatment device for collecting eutrophic lake water samples, which solves the problems of shaking and inconvenient operation in the current manual filtration of funnels and filters used to collect eutrophic lake water samples on board, as well as the problems of slow filtration speed and long time consumption when facing water samples with high algae density.

[0004] A pre-treatment device for collecting water samples from eutrophic lakes comprises a stabilizing plate, a support rod, a tray funnel, a filter screen, a tee pipe and a sedimentation barrel, wherein the support rod is vertically mounted on the stabilizing plate, the tray funnel is provided with a group of connectors mounted on the support rod, the filter screen is mounted in the tray funnel, the two ends of the liquid inlet of the tee pipe are respectively connected to the liquid outlets at the bottom of the two tray funnels, and the liquid outlet end of the tee pipe is connected to the sedimentation barrel.

[0005] Furthermore, a splash-proof cover is installed on the tray funnel, and a ventilation hole is opened on the top of the splash-proof cover.

[0006] Furthermore, a negative pressure cover is installed on the top of the sedimentation barrel, and a connecting hole and an air bag are provided on the negative pressure cover. The connecting hole cooperates with the liquid outlet end of the three-way pipe. The one-way air inlet valve of the air bag is arranged at the bottom of the negative pressure cover and is connected with the inside of the sedimentation barrel. A one-way exhaust valve is arranged on the air bag, and a valve for controlling the on-off of the pipeline is arranged on the branch pipe connecting the three-way pipe and the tray funnel.

[0007] Furthermore, a slide groove and a limit block are provided on the support rod, the connecting piece of the tray funnel is slidably installed with the slide groove, and the limit block is arranged to interfere with the branch pipe of the tee pipe to limit the maximum extension distance of the liquid outlet end of the tee pipe in the sedimentation barrel.

[0008] Furthermore, a clamping ring for installing a siphon tube is provided on the edge of the sedimentation barrel.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The present application is provided with a stabilizing plate, a supporting rod, a tray funnel and a splash-proof cover, which are easy to operate and can perform stable filtration on board, solving the problems of shaking and inconvenient operation in the current manual filtration using funnels and filters; the present application is provided with a group of tray funnels connected to a sedimentation barrel through a three-way pipe, and a negative pressure cover is provided on the sedimentation barrel. When the required water sample volume is large, two tray funnels can be used at the same time to reduce the single filtration load and improve work efficiency. The negative pressure cover can generate negative pressure suction to increase the filtration speed, solving the problems of slow filtration speed and long time consumption in the current manual filtration using funnels and filters when facing water samples with high algae density. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in describing the embodiments are described.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the working structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the negative pressure cover of the utility model.

[0015] 1-stabilizing plate, 2-support rod, 21-slide, 22-limiting block, 3-tray funnel, 31-connecting piece, 32-splash-proof cover, 33-air vent, 4-filter, 5-tee pipe, 51-valve, 6-sedimentation barrel, 7-negative pressure cover, 71-connecting hole, 8-air bag, 81-exhaust valve, 9-clamp ring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0017] The utility model discloses a pre-processing device for collecting eutrophic lake water samples. Figure 1-3A pre-treatment device for collecting water samples from eutrophic lakes includes a stabilizing plate 1, a support rod 2, a tray funnel 3, a filter screen 4, a tee pipe 5 and a sedimentation barrel 6. The support rod 2 is vertically installed on the stabilizing plate 1, the tray funnel 3 is provided with a group of connectors 31 installed on the support rod 2, the filter screen 4 is installed in the tray funnel 3, the two ends of the liquid inlet of the tee pipe 5 are respectively connected to the liquid outlets at the bottom of the two tray funnels 3, and the liquid outlet end of the tee pipe 5 is connected to the sedimentation barrel 6.

[0018] The stabilizing plate 1 and the supporting rod 2 can support a group of tray funnels 3 to stably filter water samples rich in algae, avoiding the problem of unstable and inconvenient traditional manual operation on board. A group of tray funnels 3 can improve the processing efficiency of water samples. The filter screen 4 can be detachably installed in the tray funnel 3 according to the mesh size selected according to the filtering needs. The three-way pipe 5 is connected to the outlet of the tray funnel 3 and the sedimentation bucket 6. The water sample in the tray funnel 3 that has been filtered by the filter screen 4 enters the sedimentation bucket 6 through the three-way pipe 5 and is collected and settled. After sampling, it can improve the pre-processing process of water sample collection, facilitate operation and improve processing efficiency.

[0019] See also Figure 1-3 A splash-proof cover 32 is installed on the tray funnel 3, and a vent hole 33 is opened on the top of the splash-proof cover 32 to prevent the water sample to be filtered in the tray funnel 3 from overflowing due to the shaking of the hull.

[0020] See also Figure 1-3 A negative pressure cover 7 is installed on the top of the sedimentation barrel 6. The negative pressure cover 7 is provided with a connecting hole 71 and an air bag 8. The connecting hole 71 cooperates with the liquid outlet end of the three-way pipe 5, so that the liquid outlet end of the three-way pipe 5 can be inserted into the sedimentation barrel 6 for drainage to avoid spilling. The one-way air inlet valve of the air bag 8 is arranged at the bottom of the negative pressure cover 7 and is connected with the inside of the sedimentation barrel 6. A one-way exhaust valve 81 is arranged on the air bag 8. When the algae density is high, negative pressure filtration can be generated by the air bag 8 to increase the processing speed and shorten the processing time. The branch pipe 5 connecting the three-way pipe 5 and the tray funnel 3 is provided with a valve 51 for controlling the on-off of the pipeline, which can control a single or a group of tray funnels 3 to perform negative pressure filtration.

[0021] See also Figure 1-3 The support rod 2 is provided with a slide groove 21 and a limit block 22. The connecting piece 31 of the tray funnel 3 is slidably installed with the slide groove 21. The limit block 22 is arranged to interfere with the branch pipe of the three-way pipe 5 to limit the maximum extension distance of the liquid outlet end of the three-way pipe 5 in the sedimentation barrel 6, so that the three-way pipe 5 can be moved out of the sedimentation barrel 6, which is convenient for opening the negative pressure cover 7 and cleaning the sedimentation barrel 6.

[0022] See also Figure 1-3 The edge of the sedimentation barrel 6 is provided with a clamping ring 9 for installing a siphon tube, which can fix the siphon tube to pack water samples.

[0023] Working process:

[0024] Place the stabilizing plate 1 on a flat surface, collect water samples with a large container, place the filter screen 4 with the required mesh size in the tray funnel 3, slide the tray funnel 3 onto the support rod 2 through the connector 31, connect the lower end to the tee pipe 5, place a sedimentation barrel 6 under the tee pipe 5 and cover it with a negative pressure cover 7, so that the liquid outlet end of the tee pipe 5 extends into the sedimentation barrel 6 through the connecting hole 71, add the water sample rich in algae collected into the tray funnel 3, and the water sample filtered by the filter screen 4 enters the sedimentation barrel 6 through the tee pipe 5 for collection. After the sedimentation is completed, move the tee pipe 5 upward to open the negative pressure cover 7. Open the negative pressure cover 7, install the siphon tube through the clamp ring 9 to pack the water sample, and when processing different water samples, rinse the tray funnel 3, the three-way pipe 5 and the sedimentation bucket 6 with clean pure water; if the required water sample volume is large or the algae density is high, the valve 51 can be opened and the two tray funnels 3 can be used at the same time, and the air bag 8 can be pressed to discharge the internal gas from the one-way exhaust valve 81. The one-way air inlet valve at the bottom of the air bag 8 inhales air in the sedimentation bucket 6 to generate negative pressure, and the water sample in the tray funnel 3 is negatively pressure filtered to speed up the filtration speed. It can be widely used for the collection of water samples from eutrophic lakes and reservoirs.

[0025] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pre-treatment device for collecting eutrophic lake water samples, characterized in that: The invention comprises a stabilizing plate (1), a supporting rod (2), a tray funnel (3), a filter screen (4), a three-way pipe (5) and a sedimentation barrel (6), wherein the supporting rod (2) is vertically mounted on the stabilizing plate (1), the tray funnel (3) is provided with a group of connecting pieces (31) mounted on the supporting rod (2), the filter screen (4) is mounted in the tray funnel (3), the two ends of the liquid inlet of the three-way pipe (5) are respectively connected to the liquid outlets at the bottom of the two tray funnels (3), and the liquid outlet end of the three-way pipe (5) is connected to the sedimentation barrel (6).

2. The eutrophic lake water sample collection pre-processing device according to claim 1, characterized in that: The tray funnel (3) is provided with an anti-splash cover (32), and a ventilation hole (33) is provided on the top of the anti-splash cover (32).

3. The eutrophic lake water sample collection pre-treatment device according to claim 1, characterized in that: A negative pressure cover (7) is installed on the top of the sedimentation barrel (6). The negative pressure cover (7) is provided with a connecting hole (71) and an air bag (8). The connecting hole (71) cooperates with the liquid outlet end of the three-way pipe (5). The one-way air inlet valve of the air bag (8) is arranged at the bottom of the negative pressure cover (7) and communicates with the inside of the sedimentation barrel (6). The air bag (8) is provided with a one-way exhaust valve (81). The branch pipe connecting the three-way pipe (5) and the tray funnel (3) is provided with a valve (51) for controlling the on-off of the pipeline.

4. The eutrophic lake water sample collection pre-processing device according to claim 1, characterized in that: The support rod (2) is provided with a slide groove (21) and a limit block (22); the connecting piece (31) of the tray funnel (3) is slidably mounted on the slide groove (21); the limit block (22) is arranged to abut against the branch pipe of the three-way pipe (5) to limit the maximum extension distance of the liquid outlet end of the three-way pipe (5) in the sedimentation barrel (6).

5. The eutrophic lake water sample collection pre-processing device according to claim 1, characterized in that: A clamping ring (9) for mounting a siphon tube is provided on the edge of the sedimentation barrel (6).

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