A clam seedling fishing device

Abstract

The invention relates to a catching device for aquatic products, in particular to a clam seedling catching device. In the clam seedling catching device, a water outlet pipe of a rotary water separator (2) is connected with a water inlet pipe of a water pump (1); a water outlet pipe of the water pump (1) is connected with a main water inlet pipe of a flow ejector (4); a water outlet pipe of the flow ejector (4) is connected to a clam seedling sorting unit (5); a sucker opening of a clam seedling suction head (6) is adsorbed to a clam seedling gravel surface at water bottom downwards; a suctionopening of the clam seedling suction head (6) is connected with a water inlet pipe of the rotary water separator (2); a collection opening at the bottom of the rotary water separator (2) is connectedto a negative pressure water inlet of the flow ejector (4) by a check valve (3); the check valve (3) is controlled by the negative pressure of the flow ejector (4); and if the suction negative pressure of the flow ejector (4) is more than a set pressure value of the water pump (1), the check valve (3) is opened, and otherwise, the check valve (3) is closed to cut off a channel. In the clam seedling catching device, due to the zero-lift arrangement of the water pump, energy consumption is reduced by over 3 times, clam seedlings can be caught efficiently and quickly in batch, the problem that the clam seedling suction head (6) is blocked by barriers can be solved automatically, the clam seedlings are not damaged, and the subsequent aquaculture survival rate is improved.

Description

technical field [0001] The invention relates to a fishing device for aquatic products, in particular to a device for fishing clam seedlings in water. [0002] Background technique [0003] Clam meat is cold in nature, sweet and salty in taste, rich in nutrition, and has high medicinal value. Clam meat is rich in protein, fat and minerals such as calcium, iron and phosphorus. Clearing heat, dampness and detoxification are suitable for consumption in summer and autumn. Especially those who suffer from yellow eyes, damp beriberi, sores, carbuncles and other diseases are more suitable for consumption. Clam meat can increase and enrich people's dietary varieties and dietary structure, and has high edible and medicinal value. [0004] The cultivation method of clam meat is to catch clam seedlings from rivers and seas in a certain season, and then put them into special lakes or ponds for breeding. After reaching a certain maturity, they can be caught and eaten. [0005] Clam s...

AI Technical Summary

Problems solved by technology

In the past, clam seedlings were mainly fished manually. At the bottom of several meters, trawl nets were used to pull up mud and sand together and then separated by sifting. The labor intensity was high and the yield was low. Thousands of people on the water catch clam seedlings together, but the supply is still in short supply

Some borrow some mud pumps and sand suction pumps to increase the fishing speed and catch volume, but clam seedlings cannot survive after being hit by the pump blades

Later, the jet pump produced in Taiwan was applied to increase the fishing output, but the cost was too high, and the power efficiency was less than one-third of that of the water pump, so the promotion was hindered.

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