A vacuum fish suction machine

Abstract

The invention discloses a vacuum fish suction machine, which relates to the technical field of fish farming equipment, and comprises a controller, a vacuum pump and a fish storage tank, and an air intake passage, an air suction passage and a switching air intake / suction state are arranged between the vacuum pump and the fish storage tank The switching device; the intake valve on the intake passage is connected with the intake port of the vacuum pump, the exhaust port of the vacuum pump is connected with the input end of the forward valve of the intake passage, and the output end of the forward valve is communicated with the fish storage tank; The input end of the negative pressure valve of the passage is connected with the fish storage tank, the output end of the negative pressure valve is connected with the vacuum pump, and the exhaust port of the vacuum pump is connected with the exhaust valve of the suction passage; The first three-way valve between the air inlets; and the second three-way valve between the exhaust valve, the positive pressure valve and the exhaust port of the vacuum pump. The passage can quickly and stably transfer the fish. The whole fish suction machine has a compact structure, a high degree of automation, and simple and reliable control.

Description

technical field [0001] The invention relates to the technical field of fish farming equipment, more specifically, it relates to a vacuum fish suction machine. Background technique [0002] With the development of the fish farming industry, the traditional artificial fishing method is inefficient and cannot meet the requirements more and more. Various mechanized fishing methods are being used more and more, and most of them are vacuum fish suction methods. First, trawl nets or cages are used to gather fish together, increase the mixing ratio of fish and water, reduce the energy consumption of fish suction, and then use The negative pressure generated by the vacuum pump sucks the fish from the fish pond into the fish storage container. [0003] Existing vacuum fish suction machine, such as the Chinese patent whose patent announcement number is CN110269050A, proposes a kind of three-dimensional intelligent fish fry distribution system, its working principle is similar to that ...

AI Technical Summary

Problems solved by technology

For example, when the above-mentioned vacuum fish suction machine is used to catch fish fry or perform pond replacement operations, the entire fish suction process will adversely affect the growth status of fish.

To put it simply, for example, before and during the suction of fish, it is often accompanied by the vigorous movement of the fish, which makes the fish itself increase its demand for oxygen in a short period of time, and when the fish storage tank is vacuumed, theoretically It will cause the drop of dissolved oxygen in the water body in the fish storage tank. The larger the volume of the fish storage tank, the longer the fish-water mixture will be stored in the fish storage tank (usually it is necessary to wait until the fish-water mixture in the fish storage tank reaches the set amount before storage. The outlet of the fish tank will be opened), the more the oxygen content in the water decreases, the above factors are not conducive to the growth of fish

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