66results about How to "Reduce filter load" patented technology

The invention discloses a turntable filter which comprises a main framework, a core filtering system filtering net, a driving system, a backwash system and an automatic control system, wherein the main framework consists of a shell, a central water inlet pipe, a roller, a toothed gear, a rotating bearing, a central drum and a sealing piece; the driving system comprises a driving motor, a driving gear and a roller supporting wheel; and the backwash system comprises a reverse cleaning pump, a backwash sprayer, a flushing water pipe, a nozzle system, a sewage collecting groove and a blow-off line. Compared with the traditional process, the turntable filter has the advantages that the civil engineering such as a blowing room, a lifting pump room, a chlorination room, a clean-water reservoir and a settling pond are saved, the occupied area is small, and the occupied area of 10000-tonnage water is 15 square meters only and is only 1/7 to 1/6 of the area occupied by the traditional process, so that the maintenance and repair of the equipment are simple and convenient, the operating automation degree is quite high, special care is not required, and the labor intensity of workers and the maintenance cost are greatly reduced.

The invention discloses a non-woven fabric composite material for a filter mask. The material comprises an outer layer, a waterproof breathable layer is fixedly arranged on the outer layer; an antibacterial layer is fixedly arranged below the outer layer; wherein a filter layer is fixedly arranged below the antibacterial layer, an adsorption layer is fixedly arranged below the filter layer, an inner layer is fixedly arranged below the adsorption layer, a skin-friendly layer is fixedly arranged below the inner layer, the antibacterial layer comprises a built-in silver ion antibacterial fabric layer, and the built-in silver ion antibacterial fabric layer is coated with a porous nano titanium dioxide silver-loaded antibacterial agent coating. The composite material has the advantages that theantibacterial performance of the mask can be greatly improved, bacterium breeding is effectively prevented, the outer wall of the mask can be waterproof and breathable, inner side materials are effectively subjected to waterproof protection, a good adsorption effect is achieved, water vapor and peculiar smells on the inner side of the mask can be adsorbed, and the inner side of the mask can be kept dry.

The invention discloses a cut-in multi-stage complex cyclone dust removal device which comprises a device body. The device body mainly comprises a flue gas inlet, gas outlets, an ash bucket and an ash outlet. A plurality of cyclone barrels are arranged at the inner bottom of the device body, and the rightmost cyclone barrel in a cyclone area is communicated with a pressurizing depression area through a pipeline. The top of the pressurizing depression area is provided with an electrostatic dust removal area in the device body, the pressurizing depression area and the electrostatic dust removal area are partitioned through a partition board which is provided with round openings, and abutting pressure plate is arranged above each round opening. A retractable device is fixedly connected to the lower surface of each abutting pressure plate and fixedly connected with the bottom of the pressurizing depression area. A plurality of electrostatic plates are arranged in the electrostatic dust removal area, a rotating shaft is vertically arranged in an adsorption area, and a plurality of adsorption wool yarns are fixedly connected to the rotating shaft by means of hot pressing. The cut-in multi-stage complex cyclone dust removal device is high in flue gas dust removal efficiency, staying time of flue gas in the device is long, and great dust removal effects are achieved.

The invention discloses a replacing ventilation type haze-removing fresh air ventilator capable of switching fresh return air. The replacing ventilation type haze-removing fresh air ventilator capable of switching fresh return air comprises an internal machine and an external machine which are connected mutually; the internal machine is arranged in an air-conditioner room; a switchable air supply channel is adopted; air source can be selected autonomously according to the condition of the outdoor air; when the external air is in good condition, fresh air can serve as the air source; when the external air is in bad condition, the indoor return air is filtered to serve as the air source; a primary filter arranged in the internal machine performs primary filtration on volatile substances in the air and a PM2.5 efficient filter performs secondary filtration on the air, so that the purity of the air entering indoors is guaranteed; during layout design, an air return opening is formed in a ceiling and an air supply opening is formed in a floor, so that a replacing ventilation form from bottom to top is formed and self-circulation of vitiated air in the room is avoided.

The invention provides a passive combined heat removal system with an integrated heat release trap, which is characterized in that the integrated heat release trap is arranged at the middle lower partof a double-layer coagulation containment sandwich gas space, and is an annular water tank defined by a corrosion-resistant metal plate; at least one group of pipelines and one-way valves for communicating the integrated heat release trap with the internal gas space of the containment vessel are arranged on the top wall surface of the integrated heat release trap; and the integrated heat releasetrap is connected with a containment vessel quick pressure relief system, an automatic pressure relief system, a passive residual heat removal system, a passive low-pressure safety injection system, apassive reactor cavity water injection system and a filtering and discharging system. The arrangement of a reactor system of a nuclear power plant is simplified, the size of the containment is reduced, and a feasible scheme is provided for improving the economy and passive safety of an advanced nuclear power plant.

The invention discloses a microfiltration machine with a backwashing device. The microfiltration machine comprises a filter screen support frame with a filter screen, and the backwashing device, the backwashing device comprises a backwashing water inlet pipe and at least two backwashing water outlet pipes, the water outlet of the backwashing water inlet pipe is communicated with the upper ends ofthe backwashing water outlet pipes, the lower ends of the backwashing water outlet pipes are distributed along the circumference of the filter screen support frame, the filter screen is vertically arranged, and a rotating mechanism capable of automatically rotating the lower ends of the backwashing water outlet pipes around the filter screen support frame is provided between the backwashing wateroutlet pipes and the backwashing water inlet pipe. The microfiltration machine with the backwashing device has the advantages of low control system requirements, good filtering effect, good backwashing effect, and no influences on normal running. The invention also discloses a microfiltration and precipitation integration machine.

The invention discloses an efficient de-dusting gas box type bag dust collector and belongs to the technical field of industrial de-dusting equipment. The efficient de-dusting gas box type bag dust collector comprises a box body and an ash bucket, wherein an air inlet pipe is arranged on the ash bucket; a centrifugal sedimentation device is arranged in the ash bucket and comprises an outer drum and an inner drum which are coaxially mounted; the axes of the outer drum and the inner drum are overlapped with the axis of the box body; the upper end of the outer drum is closed while the lower end of the outer drum is open; an air outlet is formed on the upper part of the side wall of the outer drum; the air inlet pipe passes through the upper end of the outer drum and is connected with the upper end of the inner drum; through holes are uniformly distributed in the circumferential wall of the inner drum; a centrifugal fan is arranged at the bottom of the inner drum; the lower end of the inner drum is higher than the lower end of the outer drum.

The invention belongs to the technical field of water treatment, and particularly relates to a rotary fabric filter. The rotary fabric filter comprises a water outlet, a shell, a water outlet weir, a separating plate, guide tracks, vent nozzles, a trolley, a backwash component, filter material components, a water header, a water inlet and a sludge tank, wherein the water inlet, the water outlet and the vent nozzles are respectively disposed on the lower side of the shell, the platy filter material components are vertically mounted in the shell, the trolley is positioned on the trolley guide tracks on the top of the shell and can move on the trolley, a dredge pump is fixed to the lower side of the trolley, one end of each dredging tube is positioned on the corresponding side of the corresponding platy filter material component, the other end of each dredging tube is connected with the dredge pump by a dredge header, and a dredging inclined plate with a certain gradient is arranged at the bottom of the shell. As the rotary fabric filter is provided with light filter materials and is operated without a valve, the rotary fabric filter has the advantages of large filter area, low filter load, backwashing water consumption and energy consumption, flexibility in system configuration, small occupied area, simplicity in running and maintenance, high automation degree and the like, and has higher purification efficiency when used with conventional water treatment technology.

The invention relates to a simultaneous complex treatment apparatus for advanced treatment of a mixed exhaust gas. The simultaneous complex treatment apparatus can perform dust collection, degradation, and elimination of PM, HAPs, SOx, and NOx, and more specifically, the invention relates to a simultaneous complex treatment apparatus for advanced treatment of a mixed exhaust gas, a filtering dust collector and a plasma discharger are arranged at the front part and the rear part of the apparatus, PM, HAPs, SOx, and NOx can be simultaneously treated, via a front panel and a nozzle of the filtering dust collector, filtering load of bag filters can be reduced, dust-eliminating efficiency can be improved, and service lifetime of the bag filters can be prolonged, a discharge electrode tube in the shape of a cylindrical tube is used, and an electrode bar is arranged at the central part, thereby increasing the reacting section of plasma and the residence time of introducing air.

The invention discloses a dirty oil water separator with a built-in flow restraining device; the dirty oil water separator comprises a separator body, the flow restraining device and a vacuum pump. The separator body is provided with an extraction port communicating with the vacuum pump and an input port for influx of dirty oil water, and the separator body is internally provided with a cylindrical first filter core arranged vertically and used for coarse filtration. The flow restraining device comprises an input part and at least two flow restraining parts which are connected with each other, the flow restraining parts are used for restraining the flowing-out direction of the dirty oil water, and output ports of the flow restraining parts are distributed along the consistent angle direction. The flow restraining device is assembled on the top side of the first filter core, and the output ports of the flow restraining parts are located between the first filter core and a shell body of the separator body. The flow restraining device is used for retaining the flow direction of the dirty oil water flowing to the first filter core, is used for oil and water pre-separation treatment of the dirty oil water and is used for timely removing dirty oil droplets gathered on the first filter core, so the filtration load of the filter core is reduced, oil-water separation is performed in vacuum conditions, and the separation effect and the separation efficiency of the separator are facilitated to be improved.

The invention provides a non-time-limit passive combined heat removal system with an integrated heat release trap, which is characterized in that the integrated heat release trap is arranged at the middle lower part of a double-layer coagulated containment sandwich gas space and is an annular water tank defined by a corrosion-resistant metal plate; at least one group of communicating pipelines andone-way valves leading to the internal air space of the containment are arranged on an inner-layer containment wall surface of the upper air space of a containment interlayer; the integrated heat release trap is connected with a containment vessel rapid pressure relief system, an automatic pressure relief system, a passive residual heat removal system, a passive low-pressure safety injection system, a passive reactor cavity water injection system and a filtering and discharging system, and the integrated heat release trap is used for simplifying the arrangement of a reactor system of a nuclear power plant, reducing the volume of a containment vessel and providing unlimited heat export for the containment vessel. A feasible scheme is provided for improving the economy and the passive safety of the advanced nuclear power plant.

The invention discloses a nanofiber composite membrane with a base material and a preparation method thereof, and relates to the technical field of nanofiber membranes. According to the method, micro-etching liquid is sprayed on a base material micro-filtration membrane to obtain a pretreated base material micro-filtration membrane, then at least one nanofiber layer is compounded on the surface ofthe pretreated base material micro-filtration membrane through electrostatic spinning, finally, the nanofiber composite membrane is obtained through two times of water bath cleaning and drying, and the nanofiber composite membrane is rolled up. According to the nanofiber composite membrane and the preparation method, electrostatic spun nanofibers can be tightly combined with the base material microfiltration membrane by pretreating the base material microfiltration membrane, and the prepared nanofiber composite membrane is good in filtering efficiency and greatly prolonged in service lifetime.

The invention discloses automotive urea production equipment and process. The automotive urea production equipment comprises a water filtering system, a charging system, a gas storage system, a dissolving tank, a urea purifying system and a finished product storage tank. Industrial water is added in the dissolving tank through the three-stage water filtering system; agricultural urea is added in the dissolving tank through the charging system; a gas spraying system is arranged in the dissolving tank and is connected with the gas storage system, when urea solid is dissolved, the gas storage system is opened, and compressed gas is sprayed into the dissolving tank so as to facilitate dissolving; ammonia is generated in a dissolving process, enters a filter through an exhaust pipe on the top of the dissolving tank, and is absorbed and then is discharged into the atmosphere; and a urea solution enters a three-stage solution filter via a solution discharge pipe and then is filtered, and a finished product is placed in the storage tank. By the scheme, the shortcoming that lots of biuret is generated by traditional heating and dissolving is overcome, and meanwhile, the ammonia generated bydissolving is purified and then discharged.

The invention discloses a front-end filtering device of a filter. The front-end filtering device of the filter comprises a filter air inlet and a filtering cover, wherein a plurality of first filtering holes which are distributed uniformly are formed in a side surface of the filtering cover; the bottom of the filtering cover is connected with the filter air inlet through a connecting ring; a filtering plate is arranged at the bottom of the filtering cover; a plurality of second filtering holes distributed uniformly are formed in the filtering plate; a rotating shaft is arranged in the middle of the filtering cover; a cleaning rod is arranged at the bottom of the rotating shaft; a cleaning wire brush is arranged on the cleaning rod; the upper end of the rotating shaft penetrates through thefiltering cover and is connected with a motor; dust suction tubes are arranged on two sides of the motor, and are connected with a small fan through an air inlet manifold; and an exhaust tube is arranged on the other side of the fan. The preliminary filtering device is arranged at the air inlet front end of the filter, filtering load of the filter is relieved, and therefore, the service life of the filter is greatly prolonged. The front-end filtering device of the filter is simple to design and operate, high in comprehensive practicability and easy to popularize and use.