CN105104288A - Dead fish collecting device for circulating aquaculture system - Google Patents

Abstract

The invention relates to a device for collecting dead fish used in a circulating aquaculture system, belonging to the technical field of aquaculture. A device for collecting dead fish used in a circulating aquaculture system, characterized in that: a fish blocking net cover (4) is arranged at the water outlet at the bottom of the fish pond (1), and a pneumatic device is arranged under the fish blocking net cover (4); the pneumatic device In order to connect the fish block cover (4) with an external pneumatic pipeline, the end of the pneumatic line close to the fish block cover (4) is provided with a first cylinder (5), which is provided with a first piston (6), One end near the outside is provided with a second cylinder (9), in which a second piston (8) is provided, and the first piston (6) is fixedly connected with the fishing net cover (4), pushing/pulling the second piston ( 8) It can drive the first piston (6) to lift up/downward the fish blocking net cover (4); The circulating water channel flows out.

Description

A device for collecting dead fish in a circulating aquaculture system

technical field

The invention relates to a device for collecting dead fish used in a circulating aquaculture system, belonging to the technical field of aquaculture.

Background technique

Dead fish are unavoidable in aquaculture, but in the circulating aquaculture system, due to the high breeding density and low water exchange rate, the color of the water body is dark, and the dead fish will flow to the sewage outlet at the bottom of the pool with the water. It is difficult to salvage, and it is not even easy to be found. If it is not removed in time, it will pollute the water body and breed harmful substances such as bacteria. It will also affect the water out of the fish pond and cause accidents.

How to realize the salvage of dead fish in the recirculating aquaculture system is a technical problem that needs to be solved urgently in this field.

Contents of the invention

The object of the present invention is to provide a device for collecting dead fish used in a circulating aquaculture system to realize automatic salvage and automatic collection of dead fish.

The present invention takes the following technical solutions:

A device for collecting dead fish used in a circulating aquaculture system. A fish-blocking net cover 4 is arranged at the water outlet at the bottom of the fish pond 1, and a pneumatic device is arranged under the fish-blocking net cover 4; Pneumatic pipeline, said pneumatic pipeline is provided with a first cylinder 5 near the end of the fishing net cover 4, with a first piston 6 inside, and a second cylinder 9 near the outside end, with a second piston 8 inside , the first piston 6 is fixedly connected to the fish-blocking net cover 4, pushing/pull the second piston 8 can drive the first piston 6 to lift up/downward the fish-blocking net cover 4; the fish-blocking net cover 4 is When jacking up upwards, dead fish flows out from the circulating water passage below the fish net cover 4.

This technical solution utilizes air pressure transmission. When the rod is compressed and pulled downwards, the fish blocking net cover in the fish pond will move upward through the transmission. At this time, there is no fish blocking net cover at the sewage outlet to intercept dead fish and will be discharged to the net plate with the water flow. When the pull bar is pulled, the fish-blocking net cover can move downwards, and now the sewage outlet is covered by the fish-blocking net cover. It should be noted that when the fish blocking net cover 4 is in the open state, the dead fish can directly enter the return pipe 7 driven by the current, while the live fish will not enter the return pipe 7 due to the characteristic of swimming against the current. When the occasional live fish was discharged by mistake, it can also be artificially put back in the fish pond 1 at the fish blocking net board 10 places.

Further, the circulating water channel includes a return pipe 7 , a vertical flow settler 2 , and a water level maintenance pipe 3 . In the vertical flow settler 2 , a fish blocking net plate 10 is provided below the upper port of the water level maintenance pipe 3 .

Furthermore, the lower part of the vertical flow settler 2 is provided with a water outlet 11 .

Further, the fish pond is circular, and the water outlet at the bottom and the fish blocking net cover 4 are located in the center of the fish pond.

Furthermore, the pneumatic pipelines are located above the circulating water channel and are staggered with each other by a certain angle.

Further, the fish-blocking net cover 4 is in the shape of a cylinder, with mesh holes around the upper end and an open lower end.

Furthermore, the upper end of the first piston 6 is fixedly connected to the central part of the upper end surface of the fishing net cover 4 .

The beneficial effects of the present invention are:

1) The device is integrated with the fish pond, the principle is simple and the operation is convenient.

2) The fish in the pond will not be frightened and will not affect the breeding.

3) Simple operation, less space occupation, easy installation and disassembly.

4) The device is suitable for all circulating water aquaculture fish ponds, and can also be extended to flowing water aquaculture fish ponds, with a wide range of applications.

5) The device is easy to operate, saves manpower and increases effective working time.

6) Use the pneumatic device to open and close the fish blocking net cover, which is ingeniously conceived;

7) Combining the water flow characteristics of circulating aquaculture and the characteristics of fish swimming against the current; utilizing the structural characteristics of the existing water level maintenance pipe 3, setting the fish blocking net plate 10 to facilitate the collection of dead fish; to a certain extent, unexpected technical effects have been obtained.

Description of drawings

Fig. 1 is a top view of the device for collecting dead fish used in a recirculating aquaculture system according to the present invention.

Fig. 2 is a sectional view along line A-A in Fig. 1 .

Fig. 3 is an enlarged view of the right part in Fig. 1 .

Fig. 4 is a partially enlarged view of the middle part of Fig. 2 .

Fig. 5 is a partial enlarged view on the right side of Fig. 2 .

Fig. 6 is a sectional view along B-B in Fig. 1 .

Fig. 7 is a partially enlarged view of the middle part of Fig. 6 .

FIG. 8 is a partially enlarged view on the right side of FIG. 6 .

Fig. 9 is a perspective view of the device for collecting dead fish used in a recirculating aquaculture system according to the present invention.

Fig. 10 is a front view from the perspective of direction F in Fig. 9 .

FIG. 11 is a partially enlarged view of FIG. 9 .

In the figure, 1. Fish pond, 2. Vertical flow settler, 3. Water level maintenance pipe, 4. Fish blocking net cover, 5. The first cylinder, 6. The first piston, 7. Return pipe, 8. The second piston, 9 .Second cylinder, 10. Fish blocking net plate, 11. Water outlet.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1-Fig. 2, when the fish pond 1 is used for normal circulating aquaculture production, the fish blocking net cover 4 is in a closed state with the bottom of the fish pond, the fish are isolated in the fish pond outside the fish blocking net cover 4, and the aquaculture water enters through the fish blocking net cover 4 The return pipe 7 then passes through the vertical flow precipitator 2, and finally enters the subsequent water treatment link through the water outlet 11.

The amount of water circulation produced by normal circulating aquaculture in fish ponds is controlled by the water level maintenance pipe 3 in the vertical flow settler 2, which can adjust the water level difference by adjusting the height of the intubation pipe, thereby achieving the purpose of controlling the flow of the water body.

Referring to Figures 1-11, when dead fish appear at the bottom of the fish pond, while ensuring the normal circulation of the water body, push the second piston 8 in the second cylinder 9 to drive the first piston 6 of the first cylinder 5 through the principle of pneumatic transmission Move upwards, and the first piston 6 is fixed together with the fish-blocking net cover 4, so the fish-blocking net cover 4 is lifted upwards at the same time due to being driven by the first piston 6, and the dead fish can directly enter the return pipe 7 and be driven by the water flow. Enter vertical flow settler 2. Dead fish are intercepted by the fish-blocking net plate 10 on the upper floor of the vertical flow precipitator 2, and then picked out by the staff, and the cultured water body leaks through the fish-stopping net plate 10 and enters the follow-up water treatment link by the water outlet 11.

After the dead fish is discharged, pull up the second piston 8 in the second cylinder 9, thereby driving the first piston 6 of the first cylinder 5 to move downward, and the fish blocking net cover 4 also returns to its original position driven by the first piston 6, The fish pond 1 returns to the normal circulating aquaculture state.

It should be noted that when the fish blocking net cover 4 is in the open state, the dead fish can directly enter the return pipe 7 driven by the current, while the live fish will not enter the return pipe 7 due to the characteristic of swimming against the current. When the occasional live fish was discharged by mistake, it can also be artificially put back in the fish pond 1 at the fish blocking net board 10 places.

The invention is integrated with the fish pond, with simple principle and convenient operation; the fish in the pond will not be frightened and will not affect the cultivation; the operation is simple, the space occupied is small, and the installation and disassembly are simple; the device is suitable for all circulating water aquaculture fish ponds, and can also be extended to running water aquaculture fish ponds. The application range is wide; the device is easy to operate, saves manpower, and increases the effective working time; the pneumatic device is used to open and close the fish blocking net cover, and the concept is ingenious; combined with the water flow characteristics of circulating aquaculture and the characteristics of fish swimming against the current; using the existing The structural characteristics of the water level maintenance pipe and the setting of the fish blocking net board are convenient for collecting dead fish, and to a certain extent, unexpected technical effects have been obtained.

Claims (7)

1., for the dead fish device of collection of circulating water culture system, it is characterized in that:

In fishpond (1) bottom, water outlet arranges barrier net cover (4), and barrier net cover (4) below arranges pneumatic means;

Described pneumatic means is be communicated with barrier net cover (4) and an outside pneumatic line, described pneumatic line is provided with the first cylinder (5) near one end of barrier net cover (4), first piston (6) is provided with in it, the second cylinder (9) is provided with near outside one end, the second piston (8) is provided with in it, described first piston (6) is fixedly connected with barrier net cover (4), and push/pull is moved described second piston (8) and first piston (6) can be driven downwards by barrier net cover (4) upwards jack-up/reset;

When described barrier net cover (4) is by upwards jack-up, dead fish is flowed out from the circulating water channel of barrier net cover (4) below.

2. the dead fish device of collection as claimed in claim 1, it is characterized in that: described circulating water channel comprises return pipe (7), perpendicular stream settling vessel (2), water level holding tube (3), described perpendicular stream settling vessel (2) below that is interior, that be positioned at water level holding tube (3) upper port is provided with barrier net plate (10).

3. the dead fish device of collection as claimed in claim 2, is characterized in that: the bottom of described perpendicular stream settling vessel (2) is provided with delivery port (11).

4. the dead fish device of collection as claimed in claim 1, it is characterized in that: described fishpond is rounded, bottom it, delivery port and barrier net cover (4) are positioned at center, fishpond.

5. the dead fish device of collection as claimed in claim 4, is characterized in that: described pneumatic line is positioned at the top of described circulating water channel, and certain angle that mutually staggers.

6. the dead fish device of collection as claimed in claim 1, is characterized in that: described barrier net cover (4) is cylindrical, and surrounding and upper end have mesh, lower ending opening.

7. the dead fish device of collection as claimed in claim 6, is characterized in that: described first piston (6) upper end is fixedly connected with the centre of barrier net cover (4) upper surface.