9results 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.

The utility model relates to an electrodialysis testing device which comprises a support and an electric control cabinet fixedly connected to the top of the support, a controller is arranged in the electric control cabinet, five centrifugal pumps are fixedly connected to the top of the support, the input ends of the centrifugal pumps are communicated with inlet pipelines, and stock solution is pumped into the corresponding centrifugal pumps through the corresponding inlet pipelines. The top of the support is fixedly connected with five core filters, the output ends of the centrifugal pumps are communicated with the corresponding core filters, the top of the support is fixedly connected with five electrodialysis units, and the output ends of the core filters are communicated with the corresponding electrodialysis units through a control part. The utility model relates to the technical field of electrodialysis tests. According to the utility model, the stock solution can be pumped into the corresponding dialysis tanks by using different centrifugal pumps according to different salt contents of the stock solution, and the output liquid after dialysis is pumped into another dialysis tank through another centrifugal pump until qualified filtrate is finally produced, so that the stock solution is filtered in a grading manner, and the salt removal rate of the stock solution is improved.

The invention relates to the technical field of municipal water treatment systems, solves the problem that in the prior art, the surface flowing water treatment efficiency is insufficient, and discloses a regulation and storage pond system with a rapid filtering function and a filtering method thereof.The regulation and storage pond system comprises a drainage channel, a box body, a hydrocyclone, a multi-stage filter, a filtering bin and a water storage pond; the drainage channel is arranged on the ground; the box body is arranged in a soil body, and the hydrocyclone, the multi-stage filter, the filter bin and the reservoir are arranged in the box body and are connected through pipelines; the interior of the multi-stage filter is divided into a plurality of communicated filter layers from top to bottom, and the filter layers are filled with different particulate matters; the filter bin comprises a shell and a filter cartridge; the third pipeline is connected with the shell; the fourth pipeline is connected with the filter cartridge; the filter cartridge is arranged in the shell, and a plurality of meshes are formed in the outer wall of the filter cartridge. The water quality treatment efficiency can be effectively improved, and pollutants such as suspended solids and impurities in the water body are gradually removed through a multi-stage filtering mechanism.

The utility model discloses a liquid organic fertilizer filtering device and relates to the technical field of filtering devices. The device comprises a tank body, the bottom of the tank body is communicated with a drain pipe A and a drain pipe B, and the top of the tank body is communicated with a water inlet pipe; a filter screen filtering unit A, a filter screen filtering unit B and a filter cloth filtering mechanism are sequentially arranged in the tank body between the drainage pipe B and the water inlet pipe from top to bottom; the water inlet end of the drain pipe A is lower than that of the drain pipe B; and a stirring mechanism is arranged above the filter screen filtering unit A on the topmost layer. According to the utility model, the filter screen filtering unit A, the filter screen filtering unit B and the filter cloth filtering mechanism are arranged in the tank body from top to bottom, and the filter screen filtering unit A is used for filtering larger suspended impurities such as plastic sheets during use, and larger settled impurities such as stones and activated carbon particles are used for filtering; and the filter cloth filtering mechanism is used for filtering small-particle impurities such as fine sand and fermentation residues, so that graded filtering is realized.

The utility model relates to the technical field of civil engineering discloses a civil grid structure, including grid plate, grid frame and longitudinal reinforcing rib, the grid frame rotates and is connected in the inside of grid plate, be provided with reinforcing plate, through -hole no.

This utility model discloses a wastewater detection solid-liquid separation device, including a back plate, a water receiving tank fixed to the bottom of the back plate, and a water-holding frame disposed on one side of the back plate and located at the top of the water receiving tank, the upper and lower ends of the water-holding frame being connected; a filter assembly including a filter frame fixedly connected to the bottom of the water-holding frame and connected to the back plate, three pull-out grooves formed on the surface of the filter frame, and filter screens slidably installed inside the pull-out grooves; through the designed water-holding frame and filter assembly, wastewater can be filtered to achieve solid-liquid separation. Three filter screens are provided for filtration; by placing filter screens with different pore sizes, graded filtration of wastewater can be achieved, thereby improving the filtration effect. Simultaneously, the filter screens can be pulled out and removed from the inside of the pull-out grooves, allowing personnel to clean them conveniently, quickly, thoroughly, and effectively, which is beneficial for the maintenance of the separation device.

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.