CN206699158U - A kind of agriculture fish culture screening plant - Google Patents

Abstract

An agricultural fish farming screening device, comprising a coverless water tank, one end of the coverless water tank is provided with a fishing net, and the other end is injected with water through a water pump; the said uncovered water tank is provided with a fish blocking fence, and the fish blocking fence includes a front fish blocking fence and a The rear fish fence, the front fish fence and the rear fish fence all include grid bars, which are equidistantly spaced and fixed on the uncovered water tank through a horizontal axis; the horizontal axis of the front fish fence and the rear fish fence Move relative to each other to adjust the gap between the fish fence and the fish. The utility model provides an agricultural fish breeding screening device, which can quickly screen fish of different sizes by setting a coverless water tank, a water pump, and a fish barrier.

Description

An agricultural fish farming screening device

technical field

The utility model relates to fish farming equipment, in particular to an agricultural fish farming screening device.

Background technique

In the practice of fishery production and scientific research, there is a need to screen fish populations of a certain size. For example, the sub-pools of different sizes of fish and cultured individuals, batch sales, and fish nutrition, treatment or behavioral tests, all need to screen some fish with similar sizes.

There are two commonly used methods for screening individuals of a certain size from a group of fish of mixed sizes: the first method is mainly for small fry, and the seedlings are screened out. It is a sieve made of bamboo strips), and the seedling sieve mainly restricts the activity space of small fish, and then flushes water against the seedling sieve by manually scooping water to create water flow (the flow pattern here is turbulent flow that fish don’t like), or directly use the water pipe to flush water, because the fish has the characteristic of top flow, the fish will start top flow after encountering turbulence, and the smaller individuals in the fish school will swim out from the gap in the sieve At this time, the fish group left in the seedling sieve is transferred to another seedling sieve of different specifications to perform the same operation again to obtain the required fry. The object of the second method is fish with large individuals and fish schools of mixed sizes. Generally, after restricting the range of activities of fish with fishing nets or special appliances, people manually screen individuals with specific specifications by naked eyes and experience. The big ones are for the big ones. The first method of screening fish fry has high screening efficiency, but it is time-consuming and cumbersome to operate, which limits the range of activities of fish schools and has a great impact on fish; the second method is mainly through artificial screening, and the deviation is relatively large. big.

Contents of the invention

The technical problem to be solved by the utility model is to provide an agricultural fish farming screening device, which can quickly screen fish of different sizes without causing any harm to the fish.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

An agricultural fish farming screening device, comprising a coverless water tank, one end of the coverless water tank is provided with a fishing net, and the other end is filled with water through a water pump; the said uncovered water tank is provided with a fish blocking fence, and the fish blocking fence includes a front fish blocking fence and a The rear fish fence, the front fish fence and the rear fish fence all include grid bars, the grid bars are equidistantly spaced and fixed on the uncovered water tank through the horizontal axis; the horizontal axis of the front fish fence and the rear fish fence Move relative to each other to adjust the gap between the fish fence and the fish.

Movable baffles and cofferdams are sequentially arranged in the uncovered water tank, between the fish fence and the water pump.

Any one of the front fish fence and the rear fish fence is fixed in the open water tank, and the other is slidably arranged in the chute of the open water tank, and a scale is provided on the crossbeam extending out of the open water tank.

The front fish fence and the rear fish fence are connected by sleeves, and the lower ends are all slid in the chute by rollers. A scale is provided on the protruding part.

The left and right sides of the front fish fence and the rear fish fence are provided with soft screens.

The utility model is an agricultural fish breeding screening device, which has the following technical effects:

1) The main part of the fish fence is composed of two layers of multi-piece side-by-side grids, the gap between adjacent bars of the same layer of fish fences is fixed, and the bars on the same layer of fish fences pass through A horizontal axis is fixed. By staggering the front fish fence and the rear fish fence, the fish passing gap can be adjusted. The use of grids instead of fishing nets is mainly due to consideration of the fish’s net flushing behavior. The screening device is made of grids, and the fish with the right size will pass through the top flow, and the larger fish will not rush to the net. Fence, to avoid the occurrence of fish injury and so on.

2) By setting fishing nets on one side of the open tank, pumping water on the other side, and setting fish fences in the middle, it can be used not only for fish screening of special specifications in fishery production, but also for fish behavior Controlled experimental design in science, for example, it can study the length of top flow time of fish of different ages in the same device, etc. The experimental design is simple and easy to operate.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the overall schematic diagram of the utility model.

Fig. 2 is the schematic diagram of the fish fence in the utility model.

Fig. 3 is a schematic diagram of the front fish fence or the rear fish fence in the utility model.

Fig. 4 is the schematic diagram of cofferdam in the utility model.

In the figure: Coverless tank 1, fishing net 2, fish fence 3, front fish fence 3-1, rear fish fence 3-2, grid bar 3-3, horizontal axis 3-4, water pump 4, movable baffle 5, cofferdam 6, scale 7, roller 8.

detailed description

As shown in Fig. 1-3, a kind of agricultural fish farming screening device comprises a coverless tank 1, the top of the coverless tank 1 is open, and the left end of the coverless tank 1 is provided with a fishing net 2, so as to keep water flowing. The right end of the open water tank 1 is in a solid closed state, the right end of the open water tank 1 is connected with the water pump 4 through the water inlet hole and the water inlet pipe, and the water is injected into the open water tank 1 by the water pump 4, so that when the fish is put into the open water tank 1 Finally, due to the unique physiological characteristics of fish, the fish will swim from left to right. Described coverless water tank 1 is provided with fish fence 3, and fish fence 3 comprises front fish fence 3-1 and rear fish fence 3-2, and front fish fence 3-1 and rear fish fence 3-2 All include grid bars 3-3, the grid bars 3-3 are U-shaped, and the adjacent grid bars 3-3 are equidistantly spaced, and are fixed on the positioning hole or the top of the uncovered water tank 1 through the horizontal axis 3-4, The horizontal axis 3-4 can be pulled horizontally left and right like this, thereby the aperture that forms between the grid bars 3-3 becomes larger and smaller, and then adjusts the fish blocking grid 3 to pass the fish gap, so that the fish pass through in order from small to large.

A movable baffle 5 and a cofferdam 6 are sequentially arranged in the uncovered water tank 1 and between the fish fence 3 and the water pump 4 . Wherein the movable baffle 5 is slidably connected with the groove in the uncovered water tank 1, and the movable baffle 5 can prevent fish from returning by setting the movable baffle 5. By setting the cofferdam 6, the cofferdam 6 is a trumpet mesh structure, and the opening faces the direction of the fish fence 3, and the cofferdam is closer to the water inlet.

Any one of the front fish fence 3-1 and the rear fish fence 3-2 is fixed in the open water tank 1, and the other is slidably arranged in the chute of the open water tank 1 and extends out of the coverless water tank 1. There are scales on the beam. The scale measurement range is 1cm-10cm. Like this, can adjust fish fence 3 to pass fish clearance in the front fish fence 3-1 of corresponding movement or rear fish fence 3-2, because another is fixed, can be used as benchmark, convenient adjustment. By setting the scale, the staggered distance between the front fish fence 3-1 and the rear fish fence 3-2 can be accurately adjusted successively, and then the fish passing gap of the fish fence 3 can be precisely adjusted.

The front fish fence 3-1 and the rear fish fence 3-2 are socketed through a sleeve, so that the relative distance between the front fish fence 3-1 and the rear fish fence 3-2 can be kept consistent , to avoid loosening, the sleeve is an elastic sleeve, one side is provided with an opening, and the opening is convenient for socketing or dismounting of the front fish fence 3-1 and the rear fish fence 3-2. The front fish fence 3-1 and the rear fish fence 3-2 lower ends are all slid in the chute by rollers, and the front fish fence 3-1 and the rear fish fence 3-2 two ends all stretch out the open water tank 1 , and a scale is provided on the protruding part. Because the two can roll relatively, the purpose of fast adjustment can be reached by relatively moving the front fish fence 3-1 and the rear fish fence 3-2. And because the grid bar 3-3 is U-shaped, it is convenient to set the rollers like this. When the front fish fence 3-1 and the rear fish fence 3-2 overlap, the fish clearance of the fish fence 3 is the largest, which is the width of the U-shaped grid bar 3-3. In addition, the grid bars 3-3 can also be simple vertical linearity, and the spacing is set as an integer, which is convenient for adjustment.

The left and right sides of the front fish fence 3-1 and the rear fish fence 3-2 are provided with soft screens. When the front fish fence 3-1 and the rear fish fence 3-2 were staggered like this, the both sides of the open water tank 1 were blocked all the time, preventing fishes of different sizes from swimming through both sides.

Working principle and process:

1) When in use, place the open water tank 1 horizontally in the water body, and the water surface is higher than the bottom of the open water tank 1 by a certain height (here, the water depth is determined according to the size of individual fish in fishery production or experiments). After the water pump 4 is connected to the water inlet pipe, it is fixed on the water inlet hole on the closed end side wall of the uncovered water tank 1 (the flow rate of the water pump is adjustable here). Adjust the interval between the 3 bars of the fish fence, so that the fish fence 3 can meet the required size through the gap. After the device is adjusted, the fish can be sieved after the inspection is correct.

2) Turn on the water pump 4 for water supply, and at the same time place a group of fish of different sizes in the most downstream unclosed area of the open tank 1 (fishing net 2), because the water flow provided by the water pump 4 has a certain flow rate (here the water flow The flow rate and flow rate can be adjusted according to actual needs), the fish put in start the top flow and swim in the opposite direction of the water flow. During this process, the smaller fish will pass through the front fish fence 3-1 and the rear fence Swim to the front of the cofferdam 6 at the interval between the fish grid 3-2, and when the small fish all swim to the front (4) face of the cofferdam, put down the movable baffle 5 to prevent the small fish from migrating, fish the small fish away, and lift the movable baffle plate 5. The interval between the front fish fence 3-1 and the rear fish fence 3-2 (the interval between the bars of the fish fence here is determined according to the size on the horizontal axis, and the interval size can only be adjusted from small to large. The classification accuracy can be determined according to actual needs), after the adjustment is completed, start the next level of fish screening, the process is the same as last time, and carry out screening in this way until all fish are separated, the individual size is more accurate or the specification is more accurate Tidy individual fish can be obtained.

Claims (5)

1. A screening device for agricultural fish breeding, comprising a coverless water tank (1), one end of the coverless water tank (1) is provided with a fishing net (2), and the other end is filled with water through a water pump (4); the coverless water tank (1) ) is provided with a fish fence (3), and the fish fence (3) includes a front fish fence (3-1) and a rear fish fence (3-2), and a front fish fence (3-1) and a rear fence The fish grids (3-2) all include grid bars (3-3), and the grid bars (3-3) are equidistantly spaced and fixed on the uncovered water tank (1) through the horizontal axis (3-4); The transverse axis (3-4) of the fish fence (3-1) and the rear fish fence (3-2) moves relatively, thereby adjusting the fish fence (3) to pass the fish gap. 2. The screening device for agricultural fish breeding according to claim 1, characterized in that: in the uncovered water tank (1), between the fish fence (3) and the water pump (4) there are movable Baffle plate (5), cofferdam (6). 3. A screening device for agricultural fish breeding according to claim 1, characterized in that: any one of the front fish fence (3-1) and the rear fish fence (3-2) is fixed on the In the covered water tank (1), another slide is arranged in the chute of the uncovered water tank (1), and a scale is provided on the crossbeam protruding from the part of the uncovered water tank (1). 4. The screening device for agricultural fish farming according to claim 1, characterized in that: the front fish fence (3-1) and the rear fish fence (3-2) are separated by a sleeve sleeve connected, and the lower end is set in the chute through the sliding of rollers, both ends of the front fish fence (3-1) and the rear fish fence (3-2) protrude out of the open water tank (1), and in the protruding part With graduations. 5. The screening device for agricultural fish breeding according to claim 1, characterized in that: the left and right sides of the front fish fence (3-1) and the rear fish fence (3-2) are equipped with Soft block.