CN221264910U

CN221264910U - A zooplankton sampling device

Info

Publication number: CN221264910U
Application number: CN202323236922.6U
Authority: CN
Inventors: 刘笳旻; 于洪贤; 明霄阳; 张湧鑫; 郭瑶
Original assignee: Northeast Forestry University
Current assignee: Northeast Forestry University
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-07-05
Anticipated expiration: 2033-11-29

Abstract

The utility model relates to the technical field of zooplankton sampling, and specifically to a zooplankton sampling device. In order to solve the problem of sampling difficulties in areas such as swamps and wetlands where it is difficult for two people to approach, a water sampler of the present invention is used to collect water samples. The water sampler is in the shape of a cylinder with upper and lower openings, a limit ring edge extending inwardly is provided at the bottom of the water sampler, a movable plate is horizontally placed inside the water sampler, the movable plate is located above the limit ring edge, the outer diameter of the movable plate is larger than the inner diameter of the limit ring edge, a plurality of limit stop arms are fixed at the middle and lower part of the inner wall of the water sampler, the limit stop arms are used to limit the upward movement of the movable plate, a filter screen cover is fixed at the bottom of the water sampler, the filter screen cover is used to filter the water sample discharged by the water sampler, a collection screen silk net is hoisted at the bottom of the water sampler, a drainage joint is connected to the bottom water outlet of the collection screen silk net, a drainage valve is provided on the drainage joint, and only one person needs to hold the operation, thereby solving the problem of difficult sampling in swamps and wetlands.

Description

Zooplankton sampling device

Technical Field

The utility model relates to the technical field of zooplankton sampling, in particular to a zooplankton sampling device.

Background

Zooplankton refers to small animals that float or swim poorly in a body of water. Zooplankton is very sensitive to the change of water environment, and is a hot spot for water ecology research, so that the collection of zooplankton is also more important. The quantitative collection which is commonly adopted at present needs two persons to finish cooperatively, and the problem of difficult sampling exists in areas such as marsh wetland and the like which are difficult for two persons to approach.

Disclosure of utility model

The utility model aims to: the utility model provides a zooplankton sampling device, which aims to solve the problem that the quantitative collection commonly adopted at present needs two persons to finish cooperatively, and sampling is difficult in areas such as marsh lands where two persons are difficult to approach.

The utility model is implemented by the following scheme: a zooplankton sampling device comprises a water sampler, a movable plate, a filter screen cover, a collection bolting silk screen and a drainage joint;

The water sampler is used for collecting water samples, the water sampler is cylindrical, the water sampler is provided with a limiting ring edge extending inwards, the moving plate is horizontally arranged inside the water sampler and located above the limiting ring edge, the outer diameter of the moving plate is larger than the inner diameter of the limiting ring edge, a plurality of limiting blocking arms are fixed below the inner wall of the water sampler, the limiting blocking arms are used for limiting the moving plate to move upwards, the filter screen cover is fixed at the bottom of the water sampler and used for filtering water samples discharged from the water sampler, the collection screen is hoisted at the lower part of the water sampler, the drainage connector is connected with a bottom water outlet of the collection screen, and a drainage valve is arranged on the drainage connector.

Further, the collection bolting silk net is in a funnel shape.

Still further, the acquisition bolting silk screen pores are maximally 0.112mm.

Further, the outer wall of the water sampler is fixedly provided with a plurality of hooks, the top of the collection bolting silk net is provided with a plurality of hanging ropes, and each hanging rope is hung on one hook.

Still further, the number of hooks is at least three.

Further, a hanging arm is arranged at the top of the water sampler and used for hanging the water sampler.

Still further, the bottom outer wall of water sampler is equipped with the round and outwards extends the retainer plate edge, and the filter screen lid outer lane is equipped with the stay cord of adjustment outer lane size, and the filter screen lid suit is in the retainer plate edge after, and the stay cord is used for reducing the outer lane size of filter screen lid and makes it fix in retainer plate edge department.

The beneficial effects are that: compared with the prior art, the utility model has the advantages that: the filter screen cover is additionally arranged, so that impurities such as suspended matters, sediment and the like in water can be filtered preliminarily, and convenience is brought to the follow-up steps of zooplankton sample photographing counting, zooplankton identification and the like. The quantitative sample loss caused by water sample splashing out of the collection bolting silk net is reduced in the sampling process, only single-person handheld operation is needed, the sampling problem is solved by a single person in the areas which are difficult to be closed by two persons, such as swamp lands, and the like, the sampling problem is solved, the sampling can be performed in the areas which are difficult to be closed by two persons, such as swamp lands, and the like.

Drawings

Fig. 1 is a schematic diagram of a zooplankton sampling device according to the present utility model.

Reference numerals illustrate: 1-water sampler; 2-a moving door; 3-hooking; 4-a lifting rope; 5-a filter screen cover; 6, collecting a bolting silk net; 7-a drainage joint; 8-a water discharge valve.

Detailed Description

The first embodiment is as follows: a zooplankton sampling device comprises a water sampler 1, a movable plate 2, a filter screen cover 5, a collection bolting silk screen 6 and a drainage joint 7;

the water sampler 1 is used for collecting water samples, the water sampler 1 is cylindrical with upper and lower openings, the bottom end of the water sampler 1 is provided with a limiting ring edge extending inwards, the moving plate 2 is horizontally arranged inside the water sampler 1, the moving plate 2 is located above the limiting ring edge, the outer diameter of the moving plate 2 is larger than the inner diameter of the limiting ring edge, a plurality of limiting baffle arms are fixed below the inner wall of the water sampler 1 and are used for limiting the moving plate 2 to move upwards, the filter screen cover 5 is fixed at the bottom of the water sampler 1, the filter screen cover 5 is used for filtering water samples discharged by the water sampler 1, the collection screen 6 is hoisted at the lower part of the water sampler 1, the drainage connector 7 is connected with a water outlet at the bottom of the collection screen 6, and the drainage connector 7 is provided with a drainage valve 8.

In this embodiment, the following will be described: the water sampler is used for adopting water, when adopting water, the water sampler is connected with the filter screen cover, and the water sampler is not connected with the collection bolting silk net, the movable plate can move between spacing collar edge and spacing fender arm, when utilizing the water sampler to adopt water, the water sampler bottom contacts the surface of water, buoyancy jack-up movable plate of water, the water sampler intakes, the movable plate rises to the pressure of pasting the spacing fender arm and no longer rises, after getting enough water, the water sampler is lifted, the pressure of water in the water sampler pushes down the movable plate, make the movable plate paste the spacing collar edge, and then seal the lower extreme access of the water sampler, guarantee as far as possible that water in the water sampler can not flow out, the detachable filter screen cover can screen impurity in the water, filter screen cover aperture is greater than zooplankton, be less than the floater (aperture value range is 2-4 mm), when needing the filter screen cover to work, connect collection screening silk net earlier, the middle part is pushed up by hand, jack-up movable plate, water flow in the water sampler goes into the collection bolting silk net, collection bolting silk net bottom can be dismantled, drain joint has, drain valve is used for adjusting the drainage valve and when the work state is used for adjusting drain valve to open, can be used for the top to replace the water collector drum to pull the top.

The second embodiment is as follows: a zooplankton sampling device is provided, wherein a collection bolting silk net 6 is in a funnel shape.

In this embodiment, the following will be described: the collection bolting silk net is in a funnel shape, so that water collection is facilitated.

Other embodiments are the same as the first embodiment.

And a third specific embodiment: a zooplankton sampling device, wherein the pores of a collection bolting silk net are 0.112mm at maximum.

In this embodiment, the following will be described: the gap of the collection bolting silk net is 0.112mm, plankton is prevented from passing through while water is filtered, alternatively, the diameter of the top of the collection bolting silk net is larger than the inlet and outlet of the water sampler, and water samples are prevented from being directly discharged without the collection bolting silk net

Other embodiments are the same as the first embodiment.

The specific embodiment IV is as follows: a zooplankton sampling device, a plurality of hooks 3 on the right are fixed on the outer wall of a water sampler 1, a plurality of lifting ropes 4 on the right are arranged on the top of a collection bolting silk net 6, and each lifting rope 4 is hung on one hook 3.

In this embodiment, the following will be described: the lower side of the outside of the barrel body is provided with two hooks for connecting a hanging rope, so that the connection of the collection bolting silk net is finished, alternatively, the hooks rotate L-shaped hooks, alternatively, the tops of the hanging ropes can be connected with hanging rings, then the hanging pipes are connected with the hooks, and Kong Geng of the hanging pipes are easy to be connected with the hooks.

Other embodiments are the same as the first embodiment.

Fifth embodiment: a zooplankton sampling device, the number of the hooks 3 is at least three.

In this embodiment, the following will be described: at least three hooks are provided, so that the stability is better.

Other embodiments are the same as the fourth embodiment.

Specific embodiment six: a hanging arm is arranged at the top of a water sampler 1 and used for hanging the water sampler 1.

In this embodiment, the following will be described: the hanging arm is used for hanging the water sampler.

Other embodiments are the same as the first embodiment.

Seventh embodiment: the zooplankton sampling device, the bottom outer wall of the water sampler 1 is provided with a circle of locating ring edge extending outwards, the outer ring of the filter screen cover 5 is provided with a pull rope for adjusting the size of the outer ring, the filter screen cover 5 is sleeved on the locating ring edge, and the pull rope is used for reducing the size of the outer ring of the filter screen cover 5 to enable the outer ring to be fixed at the locating ring edge.

In this embodiment, the following will be described: the outer wall of the bottom end of the water sampler is provided with a circle of positioning ring edge extending outwards, the outer ring of the filter screen cover is provided with a pull rope for adjusting the size of the outer ring, the filter screen cover is sleeved on the positioning ring edge, and the pull rope is used for reducing the size of the outer ring of the filter screen cover to enable the outer ring of the filter screen cover to be fixed at the positioning ring edge, so that the filter screen cover can be ensured to be connected stably.

Other embodiments are the same as the first embodiment.

The working mode is as follows:

The bottom of the water sampler is provided with an inlet and an outlet for zooplankton to enter the sampling device, the inlet is fixedly provided with a filtering device for filtering impurities in water, and after the water sampler enters a water body, the movable door floats upwards, and a water sample containing zooplankton enters the water sampler. After the collection is completed, the movable door is moved downwards under the water pressure to close the inlet and outlet below the water sampler when the water sampler is lifted out of the water body, and the water body in the water sampler is not exchanged any more.

After the water sampling of the water sampler is finished, the collection bolting silk screen with the drainage valve in a closed state is hung at the lower end of the water sampler, then the movable door is moved upwards, water enters the collection bolting silk screen after passing through the filter screen cover, a large amount of water is discharged by the collection bolting silk screen, a small amount of water sample carrying plankton enters the inner cavity of the drainage connector, and the operation is repeated until a certain amount of water sample is filtered. And opening a drainage valve, and flowing out the filtered water sample from the drainage joint to a sample bottle to finish sampling.

Claims

1. A zooplankton sampling device, characterized in that: the device comprises a water sampler (1), a movable plate (2), a filter screen cover (5), a collection bolting silk screen (6) and a drainage joint (7);

The water sampler (1) is used for collecting water samples, the water sampler (1) is cylindrical with upper and lower opening arrangement, the bottom end of the water sampler (1) is provided with a limiting ring edge extending inwards, a moving plate (2) is horizontally arranged in the water sampler (1), the moving plate (2) is located above the limiting ring edge, the outer diameter of the moving plate (2) is larger than the inner diameter of the limiting ring edge, a plurality of limiting baffle arms are fixed below the inner wall of the water sampler (1), the limiting baffle arms are used for limiting the moving plate (2) to move upwards, a filter screen cover (5) is fixed at the bottom of the water sampler (1), the filter screen cover (5) is used for filtering water samples discharged by the water sampler (1), a collection bolting-silk screen (6) is hoisted at the lower part of the water sampler (1), a drainage joint (7) is connected with a bottom water outlet of the collection bolting-silk screen (6), and a drainage valve (8) is arranged on the drainage joint (7).

2. A zooplankton sampling device according to claim 1, wherein: the collection bolting silk net (6) is in a funnel shape.

3. A zooplankton sampling device according to claim 1, wherein: the maximum pore size of the collection bolting silk net is 0.112mm.

4. A zooplankton sampling device according to claim 1, wherein: the outer wall of the water sampler (1) is fixedly provided with a plurality of hooks (3), the top of the collection bolting silk net (6) is provided with a plurality of lifting ropes (4), and each lifting rope (4) is hung on one hook (3).

5. The zooplankton sampling device of claim 4, wherein: the number of the hooks (3) is at least three.

6. A zooplankton sampling device according to claim 1, wherein: the top of the water sampler (1) is provided with a hanging arm which is used for hanging the water sampler (1).

7. A zooplankton sampling device according to claim 1, wherein: the outer wall of the bottom end of the water sampler (1) is provided with a circle of positioning ring edge extending outwards, the outer ring of the filter screen cover (5) is provided with a pull rope for adjusting the size of the outer ring, the filter screen cover (5) is sleeved on the positioning ring edge, and the pull rope is used for reducing the size of the outer ring of the filter screen cover (5) to enable the outer ring to be fixed at the positioning ring edge.