Design and performance research of shallow sea aquaculture sea cucumber fishing system based on negative pressure suction
The existing sea cucumber fishing equipment has low fishing efficiency and complicated operation,so it is not suitable for sea cucumber fishing in shallow sea culture.Aiming at the above problems,a vacuum negative pressure type sea cucumber fishing device is designed.Siemens PLC as the core controller,through the water ring vacuum pump to obtain negative pressure,control each valve in turn to start and stop operations,rely on the negative pressure generated tank to siphon sea cucumber into the storage tank,and then the sea sediment and other debris out of the storage tank and collect sea cucumber.A sea cucumber simulation model with embedded acceleration sensor(mass 130-160 g)was made to test the performance of the device.The results show that when the length of the pipette(0.8 m steel pipe and 2 m PVC steel wire pipe)is 2.8 m and the pressure value of the negative pressure storage tank is-0.04 MPa,the maximum(X-axis)initial acceleration of sea cucumber in the tube is 0.97g,and the vector acceleration is 1.09g.
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