Large-flux in-situ filtration devices for marine microorganism based on multi-channel circulation distributors

A large-flux in-situ filtration device for marine microorganism based on a multi-channel circulation distributor, wherein

• the device includes an energy and control module, a circulation distribution module, a filtration module, a pump module, a filtration volume measurement module and a main body support frame;
• the energy and control module includes an electronic compartment and a battery compartment;
• the filtration module includes eight filter film holders;
• the pump module includes a stainless steel gear pump and a deep-sea drive motor;
• the filtration volume measurement module includes a water meter, a camera, and a light emitting diode (LED) light, wherein the filtration volume measurement module measures a volume of filtered seawater using the water meter, and displays the volume of filtered seawater on a dial, when the LED light provides a light source, automatically photographs and records data of the volume of filtered seawater corresponding to each set of samples using the camera;
• and
• the circulation distribution module includes a multi-channel circulation distributor and a deep-sea servo motor;
• wherein
• the multi-channel circulation distributor and the deep-sea servo motor are connected to a shaft sleeve through a coupling;
• the multi-channel circulation distributor includes a pipe joint, an upper cover plate, a rotor, an outer shell, a spacer column, a transmission connection shaft, a lower cover plate, a polytetrafluoroethylene (PTFE) gasket, and an O-shaped rubber ring;
• a center of the upper cover plate is connected to the stainless steel gear pump by the pipe joint, a side of the lower cover plate includes eight pipe joints and an initial sealing position, and the eight pipe joints and the initial sealing position are evenly distributed in a circular array, which are respectively connected to inlets of the filter film holders;
• an inside of the rotor is provided with a water passage, one end of the water passage is connected to a central water outlet of the upper cover, and other end of the water passage is sequentially connected to eight water holes inside the lower cover when the rotor rotates for one cycle to realize a connection and sealing of a seawater flow channel;
• the upper cover plate, the outer shell, and the lower cover plate are fixed together to form a stator, the rotor is located in an inner space of the stator, the rotor is fastened to the transmission connection shaft, and then connected to the deep-sea servo motor through the coupling, the shaft sleeve is wrapped on an outside of the coupling to fixedly connect the lower cover plate and a shell body of the deep-sea servo motor;
• the eight filter film holders of the filter module are distributed around the multi-channel circulation distributor in a circumferential manner, wherein the filter film holders are all stainless steel disc single-layer flat filters, and each of which includes an exhaust valve, set screws, an upper cover plate, a support mesh plate, a lower cover plate, and a bracket;
• wherein the upper cover plate and the lower cover plate are fixed through the set screws, and the support mesh plate is clamped in the middle, a filter film with a diameter of 142 mm and an aperture of 0.22 μm is placed on the support mesh plate as a pressure support surface of a microporous film, to ensure that the filter film is not liable to break under a filtration pressure;
• the stainless steel gear pump of the pump module and the deep-sea drive motor are connected together through the coupling and the shaft sleeve, and a speed of the deep-sea drive motor is adjustable;
• and
• an inlet of the stainless steel gear pump is connected to a seawater inlet, an outlet of the stainless steel gear pump is connected to a pipe connection at a center above the multi-channel circulation distributor, and eight pipe connections below a side of the multi-channel circulation distributor are respectively connected to the inlets of the eight filter film holders, and the outlet of each of the filter film holders is connected to an inlet of the water meter through a multi-way pipe joint, and an outlet of the water meter is an outlet of the device.