CN205357818U - On --spot simple and easy benthos elutriator - Google Patents

Abstract

The utility model relates to an on - -spot simple and easy benthos elutriator, including cylindric body, characterized by: the bottom surface of body set up the circular filter screen piece that the diameter slightly is greater than the body diameter, the lower square tubular wall of the cladding body all around of filter screen piece is covered by the clamp, still sets up the play appearance mouth that extend the top from the syncline of body section of thick bamboo wall below under on the body. With comparing of prior art, the utility model discloses simple structure, the quality is 2kg only gently, uses and convenient to carry low in cost.

Description

A simple on-site benthic elutriator

technical field

The utility model relates to the field of elutriation devices for large-scale benthic animal samples in the study of benthic ecological environments such as oceans and lakes, in particular to a simple on-site elutriation device for benthic organisms.

Background technique

Benthic organisms live in the bottom mud for a long time, and have the characteristics of strong regionality and weak migration ability. They usually have little ability to avoid environmental pollution and changes, and the destruction and reconstruction of their communities take a relatively long time; and most species are relatively small. At the same time, different types of benthic organisms have different adaptability to environmental conditions and tolerance and sensitivity to adverse factors such as pollution; according to the above characteristics, the population structure, dominant species, quantity, etc. The parameters can accurately reflect the quality status of the water body.

In the study, animals that cannot pass through a sieve with a pore size of 500 μm are called macrobenthic organisms; animals that can pass through a sieve with a pore size of 500 μm but not a sieve with a pore size of 42 μm are called meiobenthos; animals that can pass through a sieve with a pore size of 42 μm are called microbenthos. Benthic organisms.

The elutriation and separation of benthos samples from mud samples is the basis for the analysis and research of benthos systems, and it is also an important content of benthic ecological research such as oceans and lakes. At present, researchers use flat-bottomed mesh sieves to wash small benthos samples. Manual washing is heavy workload, high cost, time-consuming and labor-intensive, and wastes water. After washing, the washed benthic samples are often not transferred completely, resulting in lost, increasing the experimental error.

The Chinese invention patent with the publication number CN104550095A discloses an automatic elutriation device for small benthos samples, including a housing in which a net bag is provided, and a water outlet located above the net bag, A water pump for pumping water is provided in the housing, and the water pump is connected to the water outlet through a first water pipe and a second water pipe, and a rotating connection is provided between the first water pipe and the second water pipe. Compared with the prior art, the invention is equipped with a water pump. After the water pump is turned on, the sample is automatically circulated to wash the samples, saving labor and time; the invention has three net pockets, and the net pockets with different apertures can be separated in one wash. Two batches of small benthos samples of different sizes are produced, with high efficiency; the water flow at the water outlet can be adjusted, and a protective cover is provided to prevent organisms such as insects in the air from mixing into the samples and disturbing the counting, and the water outlet parts can be removed from the housing Above, it is convenient to operate the inside of the shell, and the water can be recycled to save water. However, since the water pump of this equipment must have a power source to provide power to it, either a diesel engine or a grid power supply, but because the sampling is usually in the field, and the sampling is usually not fixed in a certain area, it is necessary to change the sampling point frequently. The power grid is basically impossible, and the diesel engine is bulky and heavy. In addition, the structure of this invention is relatively complicated, and it is very inconvenient to carry. In addition, the cost of this invention is also relatively high.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and disclose a simple on-site benthic elutriator, which has good balance at the sampling site, conforms to the characteristics of human body mechanics, and has the characteristics of being simple and portable. The specific technical solution adopted is:

An on-site simple benthic elutriator, comprising a cylindrical body 4, characterized in that: the bottom surface of the body 4 is provided with a circular filter sheet 1 with a diameter slightly larger than the diameter of the body, and the surrounding area of the filter sheet 1 is The lower cylinder wall of the body is covered and covered by the clamp 3, and the body is also provided with a sample outlet 2 extending obliquely downward and upward from the bottom of the body cylinder wall.

Further, a pair of handles 5 are arranged on the cylinder wall of the body along a plane perpendicular to the axis of the sample outlet and the axis of the body.

Further, the clamp 3 is an open ring, and a fastener 6 for tightening the clamp is arranged at the opening.

Further, more than three legs 7 are uniformly arranged on the hoop to lift the lower edge of the body 10-20 cm from the ground.

Further, the filter mesh is cut from a stainless steel filter mesh with a mesh size of 0.5 mm.

Further, the diameter of the body is 50-80mm.

Compared with the prior art, the utility model is simple in structure, only 2kg in weight, easy to use and carry, and low in cost.

Description of drawings

Fig. 1 is a structural representation of the utility model.

detailed description

Referring to the accompanying drawings, a simple on-site benthic elutriator includes a cylindrical body 4, the bottom surface of the body 4 is provided with a circular filter sheet 1 with a diameter slightly larger than the diameter of the body, and the surrounding area of the filter sheet 1 is The lower cylinder wall of the body is covered and covered by the clamp 3, and the body is also provided with a sample outlet 2 extending obliquely downward and upward from the bottom of the body cylinder wall. A pair of handles 5 are arranged on the cylinder wall of the body along a plane perpendicular to the axis of the sample outlet and the axis of the body. The hoop 3 is an open ring, and a fastener 6 for tightening the hoop is arranged at the opening, and the fastener is a screw plus a wing nut. More than 3 legs 7 are evenly arranged on the hoop to lift the lower edge of the body 15cm from the ground. The filter mesh is cut from a stainless steel filter mesh with a mesh size of 0.5 mm. The diameter of the body is 70mm.

During use, the mud extractor collects the marine bottom mud from the seabed and then pours it into the utility model. After the bottom mud is washed with sea water, the marine benthic organisms are left on the screen, and the biological samples are slowly washed out with a spoon. The sample outlet of the equipment flows into the sample bottle to complete the sample collection.

Claims (6)

1. An on-site simple benthic elutriator, comprising a cylindrical body (4), characterized in that: the bottom surface of the body (4) is provided with a circular filter sheet (1 ), the filter mesh (1) surrounds the lower cylinder wall of the body and is pressed by the clamp (3), and the body is also provided with a sample outlet (2) extending obliquely downward and upward from the bottom of the body cylinder wall. 2. A simple on-site benthic elutriator according to claim 1, characterized in that: a pair of handles (5) are arranged on the wall of the body cylinder along the surface perpendicular to the axis of the sample outlet and the axis of the body . 3. A simple on-site elutriator for benthic organisms according to claim 1, characterized in that: the clamp (3) is ring-shaped with an opening, and a fastener (6) for tightening the clamp is provided at the opening. 4. A simple on-site benthic elutriator according to claim 1, characterized in that: more than 3 feet (7 ). 5. A simple on-site benthic elutriator according to claim 1, characterized in that: the filter mesh is cut from a 0.5mm stainless steel filter mesh. 6. The on-site simple benthos elutriator according to claim 1, characterized in that: the diameter of the main body is 50-80mm.