CN2364684Y

CN2364684Y - Aeration shaped net aquaria culture apparatus for fish

Info

Publication number: CN2364684Y
Application number: CN98229295U
Authority: CN
Inventors: 张清明; 赵跃春
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-08-13
Filing date: 1998-08-13
Publication date: 2000-02-23
Anticipated expiration: 2008-08-13

Abstract

The utility model relates to an aeration shaped net aquaria culture apparatus for fishes, which is characterized in that a net bag is hung on a rectangular frame; the positions of four corners of the rectangular frame are respectively provided with four roots of upright posts; the lower part of the net bag is provided with an air-jet tube, and the air-jet tube is provided with a plurality of air-jet holes; one of the four roots of upright posts is used as an air guide tube, the lower end of the air guide tube is communicated with the air-jet tube, and the upper end is provided with a throttle valve which can control the entry of oxygen source. The utility model supplies oxygen for water body of the net aquaria solely and solves the problem of oxygen supply for the culture of high-density fish stock. Meanwhile, the net aquaria through fixing and shaping can keep the space in the net aquaria constant, and the utility model is favorable for the enhancement of culture density.

Description

Oxygenation typing fish culture in net pen device

The utility model belongs to aquaculture utensil, especially fish culture in net pen utensil and makes the field.

The fish culture in net pen of widespread usage is made two horizontal row bars by bamboo or metal material, and is separated into a plurality of rectangular frames with vertical bar at present, and pocket is hung a mesh bag (as polythene net) that is used for the stable breeding fish under each rectangular frame, then constitutes a net cage.Generally be arranged side by side, leave the walkway between two row's net cages, be convenient to the breed personnel and carry out feeding and management by some net cages.Fish culture in net pen now, the cultivation density of fish is big on the one hand, and general per mu yield is up to the 100-200 ton; On the other hand, every mu of throwing amount of raising is up to the 200-500 ton, and the 10-20% of these feeds (dry matter) is converted into the flesh of fish (dry matter), and the feed more than 80% becomes scattered about water body with forms such as residue, fish faeces.Along with the extension of culturing time, these feed discarded objects progressively accumulate, and make water body organism cumulative, cause water body " eutrophication pollution ".The a large amount of oxygen of these organic matter consumption, even cause water hypoxia to cause fish and raise the nose above water to breathe dead.Therefore, the oxygenation oxygen-supplying technology is the urgent problem that fish culture in net pen faces, and is difficult to satisfy the oxygen supply oxygenation problem of fish culture in net pen and be used for the aerator (the motor-driven impeller forms mechanical agitation at water) that pool oxygenation uses now.In addition, because cultivation density is big, the hanging mesh bag of pocket is unfavorable for freely moving about of the shoal of fish because of distortion (influence of current or the shoal of fish crowded etc. reason) reduces the mesh bag inner space.

Task of the present utility model is to overcome above weak point and a kind of oxygenation typing fish culture in net pen device is provided, and it has net cage oxygen supply of water body function, and makes shape that the mesh bag of net cage is maintained fixed and indeformable.

Task of the present utility model realizes by following design: a kind of oxygenation typing fish culture in net pen device, the rectangular frame that comprises mesh bag and pocket linked network bag, the position at four angles of this rectangular frame is respectively arranged with four root posts, bottom at mesh bag is provided with air jet pipe, has a plurality of fumaroles on the air jet pipe; One root post double as wireway is arranged in above-mentioned four root posts, and its lower end is communicated with air jet pipe, and its upper end is provided with the gate valve that the control source of oxygen enters.

Based on above-mentioned design, adopt oxygen cylinder oxygenation or inflator pump compressed air to make source of oxygen, source of oxygen is sent into the air jet pipe of net cage bottom through the wireway column of gate valve and double as calibrator, spray into water body through fumarole, oxygen reaches oxygen supply oxygenation purpose with dissolving in water body in the net cage in the slow floating-upward process of atomizing shape micro air bubble.Like this, by artificial oxygenation, the shoal of fish of both having satisfied the high-density rearing ingests and grows the requirement of oxygen, promotes machine things such as food-residue to decompose under aerobic conditions simultaneously, reduces or avoids H ₂The generation chance of Toxics such as S.Mesh bag colligation on four root posts that pocket is hung is fixed, thereby and constitute setting framework with net cage bottom air jet pipe and net cage top bamboo or metal framework and make in the mesh bag space constant, avoid original mesh bag with the current space phenomenon that diminishes of floating in the mesh bag.Help improving breeding density, increase the yield per unit area.

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is a stereogram of the present utility model;

Fig. 2 is the cutaway view along the A-A line shown in Figure 1;

Fig. 3 is the vertical view of another embodiment of air jet pipe shown in Figure 1.

Among Fig. 1, make rectangular frame 2 by bamboo or metal material, mesh bag 1 (making as adopting polyethylene netting) pocket hangs over rectangular frame 2 times, then constitutes a net cage.Position, four angles at rectangular frame 2 is provided with four root posts 4,4a, 4b, 4c, can be used for fixedly mesh bag 1 of colligation, makes it typing.Be provided with air jet pipe 5 in the bottom of mesh bag 1, the shape that has a plurality of fumaroles 6 (referring to Fig. 2, Fig. 3) air jet pipe 5 on the air jet pipe 5 becomes fork and setting according to the rectangle diagonal as shown in Figure 2 with being interconnected, perhaps the shape of air jet pipe 5 is intersected according to " ten " word in the sphere of movements for the elephants type as shown in Figure 3 and is provided with being interconnected, and four peripheries in the sphere of movements for the elephants type adopt wireway to be communicated with air jet pipe 5.Fumarole 6 apertures are less than 0.5mm, hole density 1-20/cm ²(the evacuation type is 1-10/cm ², high density type is 10-20/cm ²).One root post, 4 double wireways are arranged among above-mentioned four root posts 4,4a, 4b, the 4c, and its upper end is provided with the gate valve 3 that the control source of oxygen enters, and its lower end is communicated with air jet pipe 5.But its excess-three root post 4a, 4b, 4c be the double as wireway also, its upper end closed, and the lower end is communicated with air jet pipe 5.Specific embodiment is: it is the plastic conduits such as polyvinyl chloride of φ 10mm that four root posts 4,4a, 4b, 4c all adopt internal diameter, and air jet pipe 5 and wireway (as four peripheries of sphere of movements for the elephants type pipeline among Fig. 3) adopt the plastic conduits such as polyvinyl chloride of internal diameter φ 10mm.Fumarole 6 (referring to Fig. 2, Fig. 3) adopts laser boring, aperture 0.3mm, 10/cm of hole density ²

Compared with prior art, the utlity model has following outstanding effect:

1. this device is exclusively used in the cage culture industry of highly dense type to the independent oxygen supply of net cage water body, and Aerator then is difficult to the oxygenation oxygen supply task of competent fish culture in net pen;

2. this device noiseless fish are not frightened, and the aerator noise is bigger, easily alarms the shoal of fish, Affecting the shoal of fish normally ingests and grows.

3. this device has unique net cage shapping function.

Claims

1. oxygenation typing fish culture in net pen device, the rectangular frame that comprises mesh bag and pocket linked network bag, it is characterized in that, the position at four angles of described rectangular frame (2) is respectively arranged with four root posts (4,4a, 4b, 4c), be provided with air jet pipe (5) in the bottom of mesh bag (1), have a plurality of fumaroles (6) on the air jet pipe (5); Above-mentioned four root posts have a root post (4) double as wireway in (4,4a, 4b, 4c), and its lower end is communicated with air jet pipe (5), and its upper end is provided with the gate valve (3) that the control source of oxygen enters.

2. fish culture in net pen device according to claim 1 is characterized in that, described three root posts (4a, 4b, 4c) are the double as wireway all, their upper end closed, and the lower end is communicated with air jet pipe (5); Described air jet pipe (5) is provided with on the square-section that four root posts (4,4a, 4b, 4c) are constituted with being interconnected; The aperture of described fumarole (6) is less than 0.5mm, and fumarole density is 1-20/cm ²

3. fish culture in net pen device according to claim 2 is characterized in that, described air jet pipe (5) intersects and setting according to its diagonal on the square-section that four root posts (4,4a, 4b, 4c) are constituted with being interconnected.

4. fish culture in net pen device according to claim 2 is characterized in that, described air jet pipe (5) intersects according to "+" font in the sphere of movements for the elephants type and is provided with being interconnected.