4results about How to "Realize hierarchical filtering" patented technology

The utility model discloses a valve assembly, heat exchange device and air conditioner, valve assembly includes: valve island, the flow passage is defined in the valve island, and the valve island forms with the first interface, valve core interface and flow passage interface who communicate with flow passage, and valve core interface is located between the first interface and flow passage interface, expansion valve, expansion valve is installed in the valve core interface position, and expansion valve is communicated between the first interface and flow passage interface, filter assembly, filter assembly is located in the flow passage, and is located between the first interface and valve core interface, and filter assembly forms a plurality of filter holes, and a plurality of filter holes include a plurality of first filter holes and a plurality of second filter holes, and the equivalent diameter of first filter hole is different with the equivalent diameter of second filter hole. According to the valve assembly of the utility model, can effectively filter the refrigerant that flows through in flow passage, can realize the fractional filtration of the impurity in refrigerant, improves the filtering effect and filtering efficiency, can also reduce the flow resistance, guarantees that refrigerant passes through valve assembly normally smoothly.

This utility model discloses an MMF filtration device for semiconductor water treatment, relating to the field of waste liquid treatment technology. Its key technical features include: a multi-media filter with an inlet pipe and an outlet pipe installed at its inlet and outlet, respectively. Both the inlet and outlet pipes are equipped with liquid pumps capable of forward and reverse flow. The inlet pipe is connected to a connecting pipe and a waste discharge pipe via a first three-way valve, and the outlet pipe is connected to a drain pipe and a cleaning pipe via a second three-way valve. The connecting pipe is connected to a container holding semiconductor waste liquid, and the cleaning pipe is connected to a tank containing cleaning fluid. This utility model, combined with MMF filtration technology, further enhances filtration capacity.

The utility model belongs to municipal road drainage equipment technical field relates to a municipal road drainage multistage filtration equipment. The equipment is mainly by shell, connecting pipe, support plate, conveying chain, filter assembly and collection box constitute. Connecting pipe is used for inserting sewer mouth, and the shell blocks the entrance and makes the water flow after filtering through the internal passage into the sewer. The conveying chain is slidably arranged on the support plate, and a plurality of filter assemblies are arranged on the conveying chain, each filter assembly comprises a first filter plate, a second filter plate and a third filter plate, and the filter assemblies can realize graded filtration. The filter assemblies are movable, which facilitates switching to continuously filter and collect sundries to the collection box. The protrusions of the shell cooperate with the arc-shaped elastic filter plates to shake off sundries, and the control rod and the limiting hooks facilitate operation and stabilize the position of the filter assemblies. The device effectively solves the problem of municipal road drainage sundry blockage, and improves the drainage and filtration efficiency.

The utility model discloses a kind of aquaculture pond sewage discharge devices, it is related to pond sewage discharge technical field, including aquaculture pond, the left end of aquaculture pond is connected and is installed with filter device, the lower end of aquaculture pond left side is fixedly installed with sewage collection device.The utility model said a kind of aquaculture pond sewage discharge device, by setting pond bottom and sewage collection device, water flow is flowed to left side through the top of pond bottom, and then make sludge slowly slide to the inside of mud collection foundation pit, by the circulation flow of water, and then facilitate to collect sludge;By setting filter device and sewage collection device, realize the staged filtration to dirt, improve the sewage efficiency of aquaculture pond;By the action of fixed button and float, the water level inside the water tank connected is detected, sludge pump is extracted to the inside of sewage collection tank through sludge extraction pipe and sludge discharge pipe to the sludge in the inside of mud collection foundation pit, so that sewage collection tank collects sludge, realizes the automatic cleaning of sludge, avoids the deterioration of water quality in aquaculture pond.