CN200959772Y

CN200959772Y - Silurus Meridionalis hatching trough

Info

Publication number: CN200959772Y
Application number: CNU2006200988962U
Authority: CN
Inventors: 邹桂伟
Original assignee: Yangtze River Fisheries Research Institute CAFS
Current assignee: Yangtze River Fisheries Research Institute CAFS
Priority date: 2006-09-05
Filing date: 2006-09-05
Publication date: 2007-10-17
Anticipated expiration: 2016-09-05

Abstract

The utility model relates to a simple and high efficient silurus meridionalis hatching trough, belonging to the hatching equipment field for technique of artificial propagation of fish, which comprises a reservoir, a partition, a water inlet ditch, a water inlet, a hatching pond, a filter window screen, a level wall, a spillway, a drainage pipe and a drainage ditch. The hatching trough is a four-square hatching pond made from the walls, on which is arranged the water inlet ditch and a reservoir, while the filter window screen is arranged on the walls of the hatching pond, and the drainage pipe is buried at the middle of the bottom of the hatching pond window screen walls. While hatching, place the fish nest adhering the silurus meridionalis fertilized eggs inside the hatching pond, hatch the eggs by pumping waters continuously into the pond until the fish fry can swim horizontally and then aspirate the fish fry out of the hatching pond by means of the siphon and let free all the left fish fry by turning on the water outlet. The hatching trough is little in investment, simple in operation, high in hatching efficiency with above 90% average hatching rate and over 85% emergence rate, which is suitable for the hatching of silurus meridionalis and nest adhesion hatching of other fish that produces viscid eggs.

Description

Big mouthful of catfish incubation tank

Technical field:

The utility model relates to the famous-brand and high-quality fish incubation tank of a kind of fresh water, and particularly a kind of big mouthful catfish incubation tank of simple and efficient belongs to the incubation equipment field of artificial propagation of fish technology.

Background technology:

Big mouthful catfish (Silurus meridionalis chen), original name south southern catfish is commonly called as river Nian (Sichuan), prong Nian (Hubei) etc.This catfish move in China the Changjiang river and on the south rivers in, at the Zhujiang River, the Min River, the Oujiang River and Ling Jiang etc. distribution is arranged all, be a kind of with the fish be the food the famous and precious economic fish of large-scale fresh water.Its common individual 2 ~ 5kg, maximum individuality reaches more than the 40kg; Have that growth is fast, thorn between fine and tender taste, delicious flavour, no flesh, easily characteristics such as fish for.China begins big mouthful of catfish introduction and acclimatization from the end of the eighties in last century, propagates research and production test artificially, has obtained encouraging progress.Particularly since the seed propagation in scale technology success nineties, its breeding production spreads all over the whole nation rapidly.

Yet, because the special biological nature of big mouthful catfish, general artificial propagation facility (as the circular hatching channal of usefulness such as " four large Chinese carps ") hatching effect is undesirable, and incubation rate is low, be not suitable for the hatching of big mouthful of catfish ovum, the hatching facility that all designs some suitable big mouthful catfish voluntarily in all parts of the country for this reason.But all do not have unified standard, reproductive efficiency has nothing in common with each other, and the result is also not ideal.

Summary of the invention:

The purpose of this utility model is: a kind of simple and efficient, small investment, easy and simple to handle, hatching efficient height are provided, both be fit to big mouthful of catfish ovum hatching, can be used for producing the big mouthful of catfish incubation tank that the viscid egg fish the nest hatching again.

The utility model is to solve the problems referred to above by the following technical solutions.

Should form by cistern, inlet channel, water inlet pipe, hatchery, filtration screen window, outlet pipe and drain ditch by big mouthful of catfish incubation tank, it is characterized in that: the side top of hatchery is shaped on inlet channel, the opposite side below is shaped on the drain ditch, one end of inlet channel is shaped on a cistern, on the partition wall by the hatchery of inlet channel one side water inlet pipe is housed, lean on the hatchery screen window of the hatchery of drain ditch one side that outlet pipe is housed within the walls, on the hatchery screen window wall of each hatchery one side at least two filtration screen windows are housed.Water inlet pipe valve and duckbilled shower nozzle are housed on the water inlet pipe, the outlet pipe valve is housed on the outlet pipe, filter on the screen window and be shaped on the par wall, be shaped on gap on the par wall, an end in drain ditch has a discharge outlet.Each incubation tank has three hatcheries at least.

The utlity model has following beneficial effect:

1, little, the requirement of engineering small investment of whole incubation tank floor space, construction are easily.

2, easy to operate, highly suitable because of incubation tank is pressed human oriented design, be convenient to management and operation.

3, hatching efficient height, the average incubation rate of incubation tank reaches more than 90%, and emergence rate can reach more than 85%.

4, this incubation tank water consumption is few, only needs 1 on the water pump of 2.2KW, and need not continuous flowing water, and is static 0.5-1 hour, little to the fish-egg influence.

Description of drawings:

Fig. 1 is a big mouthful of catfish incubation tank overall structure schematic diagram;

Fig. 2 is the cutaway view of hatchery;

Fig. 3 is the filtration screen window scheme of installation of hatchery.

Among the figure: 1, cistern, 2, water inlet, 3, inlet channel, 4, water inlet pipe, 5, the duckbilled shower nozzle, 6, the hatchery, 7, hatchery screen window wall, 8, the par wall, 9, outlet pipe, 10, drain ditch, 11, the outlet pipe valve, 12, discharge outlet, 13, gap, 14, filter screen window, 15, the water inlet pipe valve, 16, partition wall.

Embodiment:

Big mouthful of catfish incubation tank of this simple and efficient is to form 4 rectangular hatcheries 6 by body of wall on rectangular concrete foundation, and 300 centimetres of each hatchery 6 length are wide 200 centimetres, dark 100 centimetres.Be shaped on inlet channel 3 above a side of hatchery 6, this inlet channel 3 is wide 50 centimetres, dark 25 centimetres.End at inlet channel 3 has a high-level reservoir 1, and the specification of cistern 1 is for long 150 centimetres, and is wide 150 centimetres, dark 100 centimetres.Evenly be provided with 3 water inlet pipes 4 on the partition wall 16 of each hatchery 6 of leaning on inlet channel 3 one sides, the caliber of water inlet pipe 4 is 50 millimeters, and the end of water inlet pipe 4 is equipped with duckbilled shower nozzle 5.2 filtration screen windows 14 are housed on the hatchery of hatchery 6 screen window wall 7, the specification of filtering screen window 14 is long 86 centimetres, wide 50 centimetres, body of wall bottom center at the hatchery of each hatchery 6 screen window wall 7 is embedded with outlet pipe 9, the caliber of outlet pipe 9 is 150 millimeters, and outlet pipe valve 11 (referring to accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3) is housed on the outlet pipe 9.

During hatching: the high-pressure hydraulic pump with 2.2KW is evacuated to water in the cistern 1, again by water inlet 2 through inlet channel 3 and water inlet pipe 4, flow in each hatchery 6, the gap 13 on par wall 8 stops pumping when there are flowing out.The fish nest (net sheet, palm leaf etc.) that will be stained with big mouthful of catfish fertilized egg is then put into hatchery 6, opening high-pressure hydraulic pump again draws water to cistern 1, water is flowed in the hatchery 6 through the duckbilled shower nozzle 5 of inlet channel 3 and water inlet pipe 4, and continuous pumpage hatching, can according to the quantity of ovum in the hatchery what, suitably stopped pumping 0.5-1 hour, do not influence hatching effect, when fry can be put down trip, with siphonage with fry sucking-offs in 6 from the hatchery, open the outlet pipe valve 11 on the outlet pipe 9 at last, will remain fry and emit, promptly finish hatching process.

Claims

1, a kind of big mouthful of catfish incubation tank, it is by cistern (1), inlet channel (3), water inlet pipe (4), hatchery (6), filter screen window (14), outlet pipe (9) and drain ditch (10) are formed, it is characterized in that: the side top of hatchery (6) is shaped on inlet channel (3), the opposite side below is shaped on drain ditch (10), one end of inlet channel (3) is shaped on a cistern (1), on the partition wall (16) by the hatchery (6) of inlet channel (3) one sides water inlet pipe (4) is housed, in the hatchery screen window wall (7) by the hatchery (6) of drain ditch (10) one sides outlet pipe (9) is housed, on the hatchery screen window wall (7) of each hatchery (6) one side at least two filtration screen windows (14) is housed.

2, big mouthful of catfish incubation tank according to claim 1 is characterized in that: each big mouthful of catfish incubation tank has three hatcheries (6) at least.

3, big mouthful of catfish incubation tank according to claim 1, it is characterized in that: water inlet pipe valve (15) and duckbilled shower nozzle (5) are housed on the described water inlet pipe (4), outlet pipe valve (11) is housed on the outlet pipe (9), filter on the screen window (14) and be shaped on par wall (8), be shaped on gap (13) on the par wall (8), an end of drain ditch (10) has a discharge outlet (12).