CN215380801U

CN215380801U - Shallow water river drift nature roe layering collection system

Info

Publication number: CN215380801U
Application number: CN202121535762.3U
Authority: CN
Inventors: 王子伟; 柏海霞; 秦鑫; 刘瀚; 谭庆军; 林俊强; 梅增荣; 张晓光; 彭期冬; 靳甜甜; 张迪; 李游坤; 朱博然
Original assignee: China Institute of Water Resources and Hydropower Research; Huaneng Lancang River Hydropower Co Ltd
Current assignee: China Institute of Water Resources and Hydropower Research; Huaneng Lancang River Hydropower Co Ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-01-04
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses a laminar fish egg collecting device for a drifting river channel of shallow water. A plurality of combination frame monomer sets gradually along vertical direction, and combination frame monomer one end is provided with the drainage net, and the combination frame monomer other end is provided with the collection egg case, is provided with the connecting rod between drainage net and the collection egg case. The device can be fixed on a shallow water river channel and can be assembled automatically, so that long-term stable fish egg collection at a fixed point position is realized; by arranging the small-caliber fish egg collecting device facing the shallow water river, the influence of mature fishes and other impurities on fish egg collection is reduced, and the study on the regularity of fish egg movement in the shallow water river is facilitated; the roe can be collected in layers at the same time; the flowmeter and the current meter are mounted on different layers of the device, so that the flow velocity and the flow of rivers at different depths can be measured in real time.

Description

Shallow water river drift nature roe layering collection system

Technical Field

The utility model belongs to the technical field of ecological fish protection, and particularly relates to a laminar collection device for drifting roes in a shallow water river.

Background

The fish early life history comprises three development stages of eggs, larval fish and juvenile fish, the fish eggs can be divided into floating eggs and sinking eggs according to morphological structure, biochemical composition and specific gravity, the sinking eggs are larger in egg granules and heavier than water, and the sinking eggs are usually settled on the water bottom or adhered to a water bottom substrate after insemination, so that the objects for fishing and collecting are mainly the floating eggs, wherein the drifting eggs are important components of the floating eggs and are widely distributed in an eastern water system of China. At present, when roe collection and investigation are carried out domestically and abroad, a large-scale plankton net, a shallow water I-type plankton net, a double-drum net, a northern Pacific plankton standard net and the like are mainly used, and a conical net and a jiang net are mainly adopted in a freshwater river to carry out sampling in a fishing boat dragging or rope fixing mode.

The existing fish egg collecting device still has the following defects:

1. most of the existing roe collecting devices lose stability due to pursuing portability, even in a shallow river, the arrangement position is also easily influenced by water flow conditions to change greatly, and a fixed drifting roe collecting device is lacked;

2. most of the existing fish egg collecting devices adopt a net mouth with a larger diameter, are used for metering and counting the number of fish eggs in a large river, and lack a fish egg collecting device for researching the fish egg distribution rule of a small-diameter net mouth facing a shallow water river;

3. the existing roe collecting device can only sample at a fixed depth once, the same device cannot simultaneously collect roe on the surface layer, the middle layer and the bottom layer of a river, and a drifting roe layered collecting device facing different depths of the river is lacked;

4. the existing fish egg collecting device is lack of accurate real-time flow and velocity measurement, and even though a flowmeter and a flow rate meter are assembled, the fish egg collecting device is difficult to read in real time due to the fact that the fish egg collecting device is fixed on the fish egg collecting device, and the fish egg collecting device capable of simultaneously measuring the flow and velocity and reading the flow and velocity in real time is lacked.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a drifting roe layered collection device for a shallow water river channel, and aims to solve the problems in the background technology.

The technical scheme adopted by the utility model is as follows:

a drifting roe layered collection device for a shallow water river comprises a combined frame main body, wherein the combined frame main body comprises a base and a plurality of combined frame single bodies arranged at the top of the base, and the combined frame single bodies are sequentially arranged along the vertical direction;

the combined frame is characterized in that a drainage net is arranged at one end of the combined frame single body, an egg collecting box is arranged at the other end of the combined frame single body, and a connecting rod is arranged between the drainage net and the egg collecting box.

Preferably, one end of the drainage net, which is far away from the egg collecting box, is provided with a port, a communication port is formed at the joint of the drainage net and the egg collecting box, and the connecting rod is arranged at the lower end of the communication port.

Preferably, the inner side of the bottom of the drainage net adopts a structure that the height of the inner side is gradually reduced from the connecting rod to the position of one end far away from the connecting rod.

Preferably, the bottom of the base is provided with a plurality of support legs, and the bottoms of the support legs adopt a conical structure.

Preferably, one side of the combined frame monomer, which is far away from the egg collecting box, is provided with a plurality of fixing rings.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. according to the utility model, the device can be fixed on a shallow water river channel and has a self-assembly structural design, so that long-term stable fish egg collection at a fixed point position is realized;

2. according to the utility model, through the design of the small-caliber fish egg collecting device for the shallow water river, the influence of mature fishes and other impurities on fish egg collection is greatly reduced, and the regularity research on the motion of fish eggs in the shallow water river is facilitated;

3. according to the utility model, the number of the vertical drainage nets and the egg collecting boxes is automatically added through the detachable combined frame main body, so that layered collection of fish eggs at the same time is realized;

4. according to the utility model, by arranging the fixing ring, the flow meters and the flow meters can be mounted on different layers of the device, so that the flow rate and the flow of different depths of the river can be measured in real time.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a main structure of the assembly frame of the present invention;

FIG. 3 is a schematic view of the structure of the drainage net and the egg collecting box of the present invention;

FIG. 4 is a sectional view showing the structure of the drainage net and the egg collecting box according to the present invention;

in the figure: 1. a combo frame body; 2. a combined frame monomer; 3. a base; 4. a drainage network; 5. an egg collection box; 6. a fixing ring; 7. a connecting rod; 8. a support leg; 9. a port; 10. a communication port.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example 1:

the embodiment provides a specific structure of a drifting roe layered collection device for a shallow water river channel, which comprises a combined frame main body 1, as shown in fig. 1-4, wherein the combined frame main body 1 comprises a base 3 and a plurality of combined frame single bodies 2 arranged at the top of the base 3, and the plurality of combined frame single bodies 2 are sequentially arranged along the vertical direction;

one end of the single combined frame body 2 is provided with a drainage net 4, the other end of the single combined frame body 2 is provided with an egg collecting box 5, and a connecting rod 7 is arranged between the drainage net 4 and the egg collecting box 5.

A port 9 is arranged at one end of the drainage net 4 far away from the egg collecting box 5, a communicating port 10 is arranged at the joint of the drainage net 4 and the egg collecting box 5, and a connecting rod 7 is arranged at the lower end of the communicating port 10.

The inner side of the bottom of the drainage net 4 adopts a structure that the height is gradually reduced from the connecting rod 7 to the position of one end far away from the connecting rod 7.

The bottom of the base 3 is provided with a plurality of support legs 8, and the bottoms of the support legs 8 adopt a conical structure.

One side of the combined frame single body 2, which is far away from the egg collecting box 5, is provided with a plurality of fixing rings 6.

By adopting the technical scheme:

firstly, the combined frame main body 1 comprises a base 3 and a plurality of combined frame single bodies 2 arranged on the top of the base 3, and the combined frame single bodies 2 are sequentially arranged along the vertical direction, so that the device can be fixed in a shallow water river and can be assembled by self, and long-term and stable fish egg collection at a fixed point position is realized;

secondly, by designing the small-caliber roe collecting device for the shallow water river, the influence of mature fishes and other impurities on roe collection is greatly reduced, and the study on the regularity of roe movement in the shallow water river is facilitated;

then, one end of the combined frame single body 2 is provided with a drainage net 4, the other end of the combined frame single body 2 is provided with an egg collecting box 5, and a connecting rod 7 is arranged between the drainage net 4 and the egg collecting box 5, so that the number of the vertical drainage nets 4 and the number of the egg collecting boxes 5 can be automatically added, and layered collection of fish eggs at the same time can be realized;

finally, one side of the combined frame single body 2, which is far away from the egg collecting box 5, is provided with a plurality of fixing rings 6, and the structure can be used for mounting the flow meter and the current meter on different layers of the device, so that the real-time measurement of the flow velocity and the flow rate of different depths of the river can be realized.

According to the working principle, referring to fig. 1-4, preparation of earlier-stage work is carried out, firstly, the depth of a river channel is determined, and a plurality of layers of combined frame monomers 2 are selected according to the depth of the river channel; secondly, assembling a plurality of layers of the combined frame single bodies 2 with the base 3 along the vertical direction; then, arranging drainage nets 4 and egg collecting boxes 5 in a plurality of layers of combined frame monomers 2; and finally, according to actual requirements, fixing rings 6 are arranged on the frame bodies of the drainage nets 4 with different layers, and the device is assembled.

In the using process, the whole fish egg collector is fixed at a test point position through a plurality of support legs 8 at the bottom of the base 3, fish eggs pass through a port 9 of the drainage net 4 and enter the egg collection box 5 through the communication port 10, the fish eggs floating at different heights from the bottom of a river respectively enter the egg collection boxes 5 with corresponding layers through the drainage nets 4 with different layers, the flow meter and the flow meter are externally hung on the fixing ring 6, required data are measured in real time, and sampling lasts for 10-15 minutes each time.

After sampling, the fish egg collecting device is taken out of the shallow river and disassembled in a layered mode, eggs of the egg collecting boxes 5 with different layers are placed into sampling bottles with different labels, biological tissue sample fixing liquid is injected for fixing and storing, and then the next group of sampling is prepared.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a shallow water river drift nature roe layering collection system, includes combination frame main part (1), its characterized in that: the combined frame main body (1) comprises a base (3) and a plurality of combined frame single bodies (2) arranged at the top of the base (3), wherein the combined frame single bodies (2) are sequentially arranged along the vertical direction;

the combined frame is characterized in that a drainage net (4) is arranged at one end of the combined frame single body (2), an egg collecting box (5) is arranged at the other end of the combined frame single body (2), and a connecting rod (7) is arranged between the drainage net (4) and the egg collecting box (5).

2. The device for collecting floating roes in shallow river channels in a layered mode according to claim 1, is characterized in that: a port (9) is formed in one end, far away from the egg collecting box (5), of the drainage net (4), a communicating port (10) is formed in the connecting position of the drainage net (4) and the egg collecting box (5), and the connecting rod (7) is arranged at the lower end of the communicating port (10).

3. The device for collecting floating roes in shallow river channels in a layered mode according to claim 1, is characterized in that: the inner side of the bottom of the drainage net (4) adopts a structure that the height is gradually reduced from the connecting rod (7) to the position of one end far away from the connecting rod (7).

4. The device for collecting floating roes in shallow river channels in a layered mode according to claim 1, is characterized in that: the base (3) bottom is provided with a plurality of stabilizer blades (8), stabilizer blade (8) bottom adopts the toper structure.

5. The device for collecting floating roes in shallow river channels in a layered mode according to claim 1, is characterized in that: one side of the combined frame single body (2) far away from the egg collecting box (5) is provided with a plurality of fixing rings (6).