CN105409868A - Filtering device for preventing and controlling procambarus clarkii and application of filtering device - Google Patents

Abstract

A filter device and application for preventing and controlling Procambarus clarkii of the present invention, comprising a filter box, a coarse filter grille, a medium filter grille, a fine filter grille, a gate and a tooth plate. The filter grid filters the adult Procambarus clarkii shrimp, duckweed, rice stalks, cultured fish and stones at the outlet of water bodies such as paddy field water, breeding ponds, and canals. The newly hatched juvenile shrimp and fertilized eggs are filtered through the fine filter grid, so as to effectively prevent the adult Procambarus clarkii and their eggs and juveniles from spreading from the drain to other water bodies to form new invasions. The invention is simple and easy to use, and has strong sustainable controllability. It is applied to the prevention and control of alien invasive aquatic organisms, the research of biodiversity protection and the market of popular science teaching aids, and is one of the necessary equipment for the prevention and control of alien invasive species, the management of hazards and the research of biodiversity protection. First, it has a broad market prospect.

Description

A filter device for preventing and controlling Procambarus clarkii and its application

technical field

The invention relates to the field of biological prevention and control, in particular to a filter device and application for preventing and controlling Procambarus clarkii.

Background technique

Procambarus clarkii Girard (Procambarus clarkii Girard), also known as lobster and crayfish, was introduced into my country as freshwater economic shrimp from Central America, South America, and northeastern Mexico. Since the mid-1990s, the domestic crayfish industry has grown rapidly, and small Lobster has become an important economically farmed species in China. At the same time, it forms an absolute competitive advantage in the local ecological environment because of its omnivorous nature, fast growth speed, and strong adaptability. Its feeding range includes aquatic plants, algae, aquatic insects, animal carcasses, etc. When food is scarce, it also kills each other, posing a huge threat to the ecological environment and biodiversity protection. Therefore, no matter in the commercial breeding or control of Procambarus clarkii, it should be strictly prevented from escaping, especially from escaping into inaccessible original ecological water bodies, so as to prevent further destructive harm caused by its ecological competitive advantage to local species.

Traditional Procambarus clarkii culture ponds and paddy fields only use bamboo chips, iron rods or seines to prevent escape at the drain, but the current common methods can only prevent the passage of adult shrimps in some water, and often cannot prevent them from climbing and overturning. Smaller juveniles and fertilized eggs pass through the current. The invention relates to a filter device for preventing and controlling Procambarus clarkii and its application, which can effectively prevent adult shrimp, juvenile shrimp and fertilized eggs from escaping, thereby realizing the prevention and control of all life forms of Procambarus clarkii individuals.

Contents of the invention

The purpose of the present invention is to provide a filter device for preventing and controlling Procambarus clarkii, which can effectively prevent adult shrimp, juvenile shrimp and fertilized eggs from escaping, thereby realizing the prevention and control of all life forms of Procambarus clarkii.

Another object of the present invention is to provide the application of the above filter device for preventing and controlling Procambarus clarkii.

According to the filtering device of preventing and controlling Procambarus clarkii of the present invention comprises:

A filter box 1, the filter box 1 is provided with a coarse filter grid 2, a medium filter grid 3, a fine filter grid 4, and a gate 5 on the vertical bottom surface from the hydrophilic side to the hydrophobic side. The bottom of the body 1 is fixedly connected with a tooth plate 6, and the bottom teeth of the tooth plate 6 are inserted into the ground downward;

Wherein, a plurality of filter grids 7 are embedded in the coarse filter grid 2, and the filter grids 7 are gradually narrowed from the inner side of the hydrophilic direction, and are used to filter adult shrimps of Procambarus clarkii, duckweed, rice stalks, cultured fish and rocks, etc.;

The middle filter grid 3 is embedded with a plurality of filter grids 7, and the filter grid 7 is gradually narrowed from the inner side of the hydrophilic direction, and is used to filter juvenile shrimp and fry of Procambarus clarkii newly separated broodstock;

The fine filter grid 4 is embedded with a plurality of filter grids 7, and the filter grid 7 is gradually narrowed from the inner side of the hydrophilic direction, and is used to filter the newly hatched juvenile shrimp and fertilized eggs of Procambarus clarkii;

The gate 5 is inserted into the aluminum groove track strip at the hydrophobic end of the filter box body 1, and clings to the fine filter grille 4, and is used to close and open the drainage function of the filter device.

According to a specific embodiment of the present invention, the filter box body 1 of the filter device for preventing and controlling Procambarus clarkii is a cubic all-aluminum material box body with a thickness of 1 cm and a side length of 50 cm. Side aluminum groove track strips, and can allow the coarse filter grille 2, intermediate filter grille 3, and fine filter grille 4 with a width of 1cm to be inserted and pulled out.

According to a specific embodiment of the present invention, the coarse filter grid 2 is an all-aluminum material grid plate with a thickness of 1 cm, embedded with 600 three-dimensional square holes with a side length of 2 cm and a side length of 1 cm. , because the body length of adult Procambarus clarkii is greater than 3cm, the coarse filter grid 2 can effectively block its passage.

According to a specific embodiment of the present invention, the fine filter grid 4 is an all-aluminum material grid plate with a thickness of 1 cm, embedded with 600 three-dimensional squares with a length of 0.5 cm on one side and a length of 0.25 cm on the other side. The hole grid can effectively block the passage of the newly hatched Procambarus clarkii juveniles and fertilized eggs that are separated from the mother body with a body length of 0.25-1.0 cm, and make it exposed between the middle filter grid 3 and the fine filter grid 4, so as to facilitate kill.

According to a specific embodiment of the present invention, the gate 5 is an all-aluminum plate with a thickness of 1 cm.

The invention also improves the application of the filter device for preventing and controlling Procambarus clarkii in the fields of alien invasive species prevention and control, environmental monitoring and biodiversity protection.

The invention discloses a filter device for preventing and controlling Procambarus clarkii, which is suitable for the prevention and control of alien invasive species, environmental monitoring and biological diversity protection research and popular science teaching aid market, and has broad market prospects.

The beneficial effect of the present invention is that it is different from traditional Procambarus clarkii culture ponds and paddy field protection measures, and a filter device for preventing and controlling Procambarus clarkii of the present invention filters paddy field water by using a coarse filter grid narrowed backwards. The adult Procambarus clarkii shrimp, duckweed, rice stalks, cultured fish and stones in the drainage outlets of water bodies such as ponds, aquaculture ponds, and canals are filtered through the middle filter grid to filter the juvenile shrimp from the newly separated broodstock, and then filtered through the fine filter grid. The newly hatched juvenile shrimp and fertilized eggs can effectively prevent the adult shrimp, eggs and juveniles of Procambarus clarkii from spreading from the drain to other water bodies, and realize the prevention and control of the whole life form of Procambarus clarkii. The invention has the characteristics of strong corrosion resistance, durability, low maintenance cost, good prevention and control effect, etc., has high practicability and durability, and is applied to the prevention and control of alien invasive organisms, monitoring of environmental indicator organisms, and research on biodiversity protection And science teaching aids market, has broad market prospects.

Description of drawings

Fig. 1 is a schematic diagram of a filter device for preventing and controlling Procambarus clarkii.

reference sign

1-----filter box; 2----coarse filter grille; 3----middle filter grille; 4----fine filter grille; 5----gate; 6-- --Tooth plate; 7------filter grid;

detailed description

Example 1

According to the filtering device of preventing and controlling Procambarus clarkii of the present invention comprises:

A filter box 1, the filter box 1 is provided with a coarse filter grid 2, a medium filter grid 3, a fine filter grid 4, and a gate 5 on the vertical bottom surface from the hydrophilic side to the hydrophobic side. The bottom of the body 1 is fixedly connected with a tooth plate 6, and the bottom teeth of the tooth plate 6 are inserted into the ground downward;

Wherein, a plurality of filter grids 7 are embedded in the coarse filter grid 2, and the filter grids 7 are gradually narrowed from the inner side of the hydrophilic direction, and are used to filter adult shrimps of Procambarus clarkii, duckweed, rice stalks, cultured fish and rocks, etc.;

The middle filter grid 3 is embedded with a plurality of filter grids 7, and the filter grid 7 is gradually narrowed from the inner side of the hydrophilic direction, and is used to filter juvenile shrimp and fry of Procambarus clarkii newly separated broodstock;

The fine filter grid 4 is embedded with a plurality of filter grids 7, and the filter grid 7 is gradually narrowed from the inner side of the hydrophilic direction, and is used to filter the newly hatched juvenile shrimp and fertilized eggs of Procambarus clarkii;

The gate 5 is inserted into the aluminum groove track strip at the hydrophobic end of the filter box body 1, and clings to the fine filter grille 4, and is used to close and open the drainage function of the filter device.

The above-mentioned filter box body 1 is a cubic all-aluminum material box body with a thickness of 1 cm and a side length of 50 cm. It has equilateral aluminum groove track bars at both ends and the middle part respectively, and can allow a coarse filter grille with a width of 1 cm. The grille 3 and the fine filter grille 4 are inserted and pulled out.

The above-mentioned coarse filter grid 2 is an all-aluminum material grid plate with a thickness of 1 cm, embedded with 600 three-dimensional square holes with a side length of 2 cm and a side length of 1 cm. The average length is greater than 3 cm, and the coarse filter grid 2 can effectively block its passage.

The above-mentioned intermediate filter grid 3 is an all-aluminum material grid plate with a thickness of 1 cm, embedded with 600 three-dimensional square holes with a side length of 1 cm and a side length of 0.5 cm, which can effectively block the body length of 0.9 The juveniles of Procambarus clarkii of -4.0cm pass through for the first time from the mother, and make it exposed between the coarse filter grille 2 and the middle filter grille 3, so as to facilitate hunting.

The above-mentioned fine filter grid 4 is an all-aluminum material grid plate with a thickness of 1 cm, embedded with 600 three-dimensional square holes with a length of 0.5 cm on one side and a length of 0.25 cm on the other side, which can effectively block the body length of The 0.25-1.0cm detached Procambarus clarkii juveniles and fertilized eggs pass through and are exposed between the middle filter grid 3 and the fine filter grid 4, which is convenient for killing.

Above-mentioned gate 5 is the all-aluminum sheet material of thickness 1cm.

The above-mentioned filter device for preventing and controlling Procambarus clarkii is applied in the fields of prevention and control of alien invasive species, environmental monitoring and biodiversity protection.

Claims (6)

1. a filter device for preventing and controlling Procambarus clarkii, characterized in that, the filter device comprises: A filter box (1), the filter box (1) is provided with a coarse filter grid (2), a medium filter grid (3), a fine filter grid ( 4), the gate (5), the bottom of the filter box (1) is fixedly connected with a tooth plate (6), and the tooth tip of the tooth plate (6) is inserted into the ground downward; Wherein, the coarse filter grid (2), the filter grid (3), and the fine filter grid (4) are respectively embedded with a plurality of filter grids (7), and the filter grids (7) are formed by the hydrophilic direction. The inner side gradually narrows; The gate (5) is adjacent to the fine filter grid (4), and is used to close and open the drainage function of the filter device. 2. the filter device of preventing and controlling Procambarus clarkii according to claim 1, is characterized in that, described filter box body (1) has equilateral groove track bar at two ends and the middle part respectively, allows the width to be 1cm The coarse filter grill (2), the middle filter grill (3), and the fine filter grill (4) are inserted and pulled out. 3. the filter device of preventing and controlling Procambarus clarkii according to claim 1, is characterized in that, described coarse filter grid (2) is the grid plate of thickness 1cm, and embedded 600 side lengths are 2cm , the other side length is a three-dimensional square filter grid (7) of 1cm. 4. the filter device for preventing and controlling Procambarus clarkii according to claim 1, is characterized in that, the middle filter grid (3) is a grid plate with a thickness of 1cm, embedded with 600 side lengths of 1cm , the other side length is a three-dimensional square filter grid (7) of 0.5cm. 5. the filter device of preventing and controlling Procambarus clarkii according to claim 1, is characterized in that, described fine filtering grid (4) is the grid plate of thickness 1cm, and embedded 600 side lengths are 0.5 cm, the other side length is a three-dimensional square filter grid (7) of 0.25cm. 6. The application of the filter device for preventing and controlling Procambarus clarkii according to claim 1 in the fields of alien invasive species control, environmental monitoring and biodiversity protection.