CN214339433U

CN214339433U - Roe drifting characteristic observation device

Info

Publication number: CN214339433U
Application number: CN202120073028.3U
Authority: CN
Inventors: 朱挺兵; 吴兴华; 吴兴兵; 杨德国; 陈敏; 朱永久
Original assignee: China Three Gorges Corp; Yangtze River Fisheries Research Institute CAFS
Current assignee: China Three Gorges Corp; Yangtze River Fisheries Research Institute CAFS
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-10-08
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses a fish egg drifting characteristic observation device, which comprises a loop bottom plate and a return water tank, wherein a loop outer ring panel is arranged in the loop bottom plate, a loop inner ring panel is arranged in the loop outer ring panel, the loop outer ring panel and the loop inner ring panel form a closed water flow loop, a plastic funnel is arranged above the water flow loop, the fish egg drifting characteristic observation device has the advantages of simple structure, small appearance, low construction cost and convenient carrying, is suitable for different requirements of laboratory observation, field observation and the like, can be operated circularly by injecting a small amount of water, has the effects of water saving and energy saving, can not damage fish eggs in the water flow loop by placing a thrust pump outside the water flow loop, can circularly drift in the water flow loop, and enables the drifting characteristic of the fish eggs in different development stages to be continuously observed, is beneficial to the research on the physical characteristics of the fish eggs and the protection technology of fishes laying drifting eggs.

Description

Roe drifting characteristic observation device

Technical Field

The utility model relates to a motion observation field specifically is a roe drifting characteristic observation device.

Background

With the aggravation of water and electricity development activities, the original flowing water environment of a plurality of rivers is changed into slow flowing water or still water due to the obstruction of a dam, and the survival and the multiplication of fishes producing drifting eggs are seriously threatened. When fish protection measures are made in a plurality of hydraulic engineering affected areas, the recovery of natural propagation of fishes laying drifting eggs is a key problem. Therefore, the drifting characteristics (such as specific gravity, sedimentation rate, minimum floatable flow velocity, drifting movement track and the like) of the drifting fish eggs are mastered, and the method has great reference value for breaking through the artificial incubation technology of the drifting fish and establishing ecological flow of the reservoir and the like.

At present, few reports about roe movement observation devices are provided. The scholars in China mainly use the large water tanks to observe the drifting characteristics of drifting fish eggs, and the problems of large occupied space, high construction and operation cost, complex operation, inconvenience in carrying and the like exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a roe drifting characteristic observation device to solve the occupation space that the present roe movement observation device who uses proposed in the above-mentioned background art exists big, build with running cost height, operation complicacy, inconvenient carrying, unable circulation survey the drifting characteristic scheduling problem of roe different developmental stages many times.

The technical scheme of the utility model is realized like this: the utility model provides a roe drifting characteristic observation device, includes ring bottom plate and return flume, be provided with ring outer loop panel in the ring bottom plate, be provided with ring inner loop panel in the ring outer loop panel, ring outer loop panel with ring inner loop panel forms a confined rivers ring, rivers ring top is provided with the plastics funnel, the one end of rivers ring pass through the nylon mesh piece with the return flume is linked together, install drainage valve on the lateral wall of return flume, the inside pump that pushes away that is provided with of return flume, the pump that pushes away pass through the outlet pipe with the rivers ring is linked together.

Preferably, the bottom plate of the loop is made of organic glass materials.

Preferably, a layer of opaque film is adhered to the surface of the inner ring panel of the loop.

Preferably, the size of the bottom plate of the loop is 100cm in length, 50cm in width and 8mm in thickness, the size of the outer ring panel of the loop is 25cm in radius of a curve, 40cm in length of a straight path, 20cm in height and 5mm in thickness, and the size of the inner ring panel of the loop is 14cm in radius of a curve, 40cm in length of a straight path, 20cm in height and 5mm in thickness.

Preferably, the nylon mesh is fixedly connected with the outer ring panel of the loop, and the mesh of the nylon mesh is 1.5 mm.

Preferably, the water return tank is fixedly connected with the drainage valve, the propeller pump is fixedly connected with the water outlet pipe, and the water outlet pipe is hermetically connected with the annular outer ring panel.

By adopting the technical scheme, the beneficial effects of the utility model are that:

this kind of roe drift characteristic observation device, simple structure, the outward appearance is small and exquisite, construction cost is low, conveniently carry, is applicable to different demands such as laboratory observation and field observation, simultaneously the utility model discloses pour into a small amount of water and can circulation, have water conservation, energy-conserving effect, the pump that pushes away is placed outside the rivers ring road, can not injure the roe in the rivers ring road, the roe can drift at rivers ring road inner loop for incessant observation roe different stages of developing drift characteristic becomes possible, is of value to the research of roe physical characteristic and the fish protection technology of producing drift characteristic roe.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention.

Wherein: 1. a loop floor; 2. a water return tank; 3. a plastic funnel; 4. a drain valve; 5. a loop outer ring panel; 6. a loop inner ring panel; 7. a water flow loop; 8. nylon mesh sheets; 9. a pump; 10. and (5) discharging a water pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, a roe drifting characteristic observation device comprises a loop base plate 1 and a return water tank 2, wherein a loop outer ring panel 5 is arranged in the loop base plate 1, a loop inner ring panel 6 is arranged in the loop outer ring panel 5, the loop outer ring panel 5 and the loop inner ring panel 6 form a closed water flow loop 7, a plastic funnel 3 is arranged above the water flow loop 7, one end of the water flow loop 7 is communicated with the return water tank 2 through a nylon mesh 8, a drainage valve 4 is arranged on the side wall of the return water tank 2, a push-flow pump 9 is arranged inside the return water tank 2, and the push-flow pump 9 is communicated with the water flow loop 7 through a water outlet pipe 10.

Specifically, the loop bottom plate 1 is made of an organic glass material, the organic glass material is high in strength, good in flexibility and low in cost, the structural strength and the corrosion resistance of the device can be guaranteed, and meanwhile the cost of the device is reduced.

Specifically, a layer of opaque film is pasted on the surface of the ring inner ring panel 6, so that the situation that the shot picture is disordered when observation and video recording are carried out due to the transparency of the ring inner ring panel 6 can be avoided.

Specifically, the size of the circular channel bottom plate 1 is 100cm in length, 50cm in width and 8mm in thickness, the size of the circular channel outer ring panel 5 is 25cm in curve radius, 40cm in straight length, 20cm in height and 5mm in thickness, the size of the circular channel inner ring panel 6 is 14cm in curve radius, 40cm in straight length, 20cm in height and 5mm in thickness, the circular channel outer ring panel 5 and the circular channel inner ring panel 6 can be fixed on the circular channel bottom plate 1 through the arrangement, a sealed water flow circular channel 7 is formed, water and fish eggs are thrown in the water flow circular channel 7, and therefore the drifting state of the fish eggs is observed and recorded.

Specifically, nylon net piece 8 and 5 fixed connection of ring way outer loop panel, nylon net piece 8 mesh 1.5mm set up like this and can prevent that the roe from passing through nylon net piece 8 and getting into in return water tank 2 to avoid the roe to be destroyed by pump 9, improved the security of roe.

Specifically, return water tank 2 and drain valve 4 fixed connection, impeller pump 9 and outlet pipe 10 fixed connection, outlet pipe 10 and the sealed connection of ring way outer loop panel 5 set up like this and can send out the water in return water tank 2 from outlet pipe 10 through impeller pump 9, adjust the speed of rivers in the rivers ring way 7.

The working principle is as follows: firstly, a loop base plate 1 is placed on a flat experiment table, a loop outer ring panel 5 and a loop inner ring panel 6 are both fixed on a base in an adhesive mode to form a closed water flow loop 7, when observing the drift characteristics of fish eggs, firstly, a drainage valve 4 is kept in a closed state, tap water which is aerated for twenty-four hours is poured into the water flow loop 7, the water level in the water flow loop 7 is kept at a depth of fifteen centimeters, then, a propeller pump 9 is started in a minimum flow speed state, the water flow in the water flow loop 7 enters a stable state of slow flow, a point type flow speed instrument is used for measuring the flow speed of the water flow in the water flow loop 7, then, a dropper is used for sucking a fresh fish egg, then, fish eggs are thrown in from a plastic funnel 3 above the water flow loop 7, the fish eggs fall into the water flow in the water flow loop 7 through the plastic funnel 3, then, a camera is used for recording the drift track of the fish eggs in the water flow loop 7, the drifting state of the same roe in the water flow loop 7 can be observed until the fry is hatched according to the requirement, the flow velocity of the water flow in the water flow loop 7 can be adjusted by adjusting the output power of the propeller pump 9, the drifting state of the same roe at different flow velocities can be observed, and the movement state of the roe can be recorded through video.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. 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 roe drifting characteristic observation device which characterized in that includes: the utility model provides a water circulation pump, including return water tank (2), be provided with loop outer loop panel (5) in loop bottom plate (1), be provided with loop inner loop panel (6) in loop outer loop panel (5), loop outer loop panel (5) with loop inner loop panel (6) form a confined rivers ring (7), rivers ring (7) top is provided with plastics funnel (3), the one end of rivers ring (7) pass through nylon net piece (8) with return water tank (2) are linked together, install drain valve (4) on the lateral wall of return water tank (2), return water tank (2) inside is provided with pump (9), pump (9) through outlet pipe (10) with rivers ring (7) are linked together.

2. The observation device for observing drifting characteristics of fish eggs, according to claim 1, is characterized in that: the loop bottom plate (1) is made of organic glass materials.

3. The observation device for observing drifting characteristics of fish eggs, according to claim 1, is characterized in that: and a layer of opaque film is adhered to the surface of the ring inner ring panel (6).

4. The observation device for observing drifting characteristics of fish eggs, according to claim 1, is characterized in that: the size of the loop bottom plate (1) is 100cm in length, 50cm in width and 8mm in thickness, the size of the loop outer ring panel (5) is 25cm in bend radius, 40cm in straight length, 20cm in height and 5mm in thickness, and the size of the loop inner ring panel (6) is 14cm in bend radius, 40cm in straight length, 20cm in height and 5mm in thickness.

5. The observation device for observing drifting characteristics of fish eggs, according to claim 1, is characterized in that: the nylon net piece (8) is fixedly connected with the loop outer ring panel (5), and the mesh of the nylon net piece (8) is 1.5 mm.

6. The observation device for observing drifting characteristics of fish eggs, according to claim 1, is characterized in that: the water return tank (2) is fixedly connected with the drainage valve (4), the propeller pump (9) is fixedly connected with the water outlet pipe (10), and the water outlet pipe (10) is hermetically connected with the annular outer ring panel (5).