5results about How to "Increase operating pressure" patented technology

This invention discloses a laboratory-grade ceramic membrane pressure filtration device, comprising a pressure ceramic membrane filtration unit, a pressure pump, a feed container, a valve, and a dialysate container. This invention uses an inorganic ceramic membrane as the filter medium, which is resistant to acids and alkalis, resistant to organic solvents, has a wide range of applications, high strength, and high operating pressure. It maintains high membrane integrity during installation, disassembly, and filtration, and offers high operating flux and high recovery rate. It can withstand both high-pressure steam sterilization and chemical sterilization. The sealing method is simpler than that of tubular ceramic membranes, and the dead volume is significantly smaller, requiring relatively less feed solution, making it suitable for laboratory operating environments.

The present invention relates to the technical field of sewage pumps, and specifically to a split sewage pump, comprising a mounting base, an upper end face of the mounting base being fixedly connected with a connecting base and a pump body, an upper end face of the connecting base being fixedly connected with a driving motor, supporting frames being fixedly connected with the connecting base and opposite side walls of the pump body, a plurality of circumferentially arranged retaining frames being fixedly connected between two of the supporting frames, a mounting end cover being fixedly connected with a side wall at the right end of the pump body by a plurality of bolts, a conveying chamber being provided in the pump body, a fan blade being rotatably connected in the conveying chamber, an intercepting mechanism being provided in conjunction with structures such as a transmission shaft, a retaining frame and a driving motor, so that when the pump body is pumping sewage, large-volume impurities in the sewage are blocked on the left side of the fan blade, so as to avoid direct contact between the impurities and the fan blade, which affects the rotation of the fan blade, and at the same time, the cleaning mechanism is cooperated to clean the blocking net, so as to prevent the impurities from clogging the blocking net and affecting the normal suction process of the water pump.

This invention provides a low-energy-consumption wastewater treatment system for ferric phosphate production, comprising a mother liquor wastewater equalization tank, a wash water wastewater equalization tank, a first pretreatment unit, a second pretreatment unit, a nanofiltration unit, a reverse osmosis unit, and an evaporation unit. The outlet of the mother liquor wastewater equalization tank is connected to the inlet of the first pretreatment unit, the outlet of the first pretreatment unit is connected to the inlet of the nanofiltration unit, and the concentrate outlet of the nanofiltration unit is connected to the inlet of the evaporation unit. Similarly, the outlet of the wash water wastewater equalization tank is connected to the inlet of the second pretreatment unit, the outlet of the second pretreatment unit is connected to the inlet of the reverse osmosis unit, and the product water outlet of the nanofiltration unit is connected to the inlet of the reverse osmosis unit. This invention employs nanofiltration and two-stage reverse osmosis to achieve wastewater reuse while concentrating the wastewater, reducing the investment and operating costs of the evaporator. Furthermore, by evaporating the wastewater, it achieves zero wastewater discharge.

The invention discloses a filtering device for acidic etching waste liquid, and relates to the technical field of filtering devices. The filtering device comprises a pretreatment mechanism, a filtering mechanism, a cleaning mechanism, a box, a temperature control mechanism and a detection mechanism. The pretreatment mechanism is tightly connected to the box, the pretreatment mechanism is located above the filtering mechanism, the filtering mechanism is tightly connected to the box, the filtering mechanism is communicated with the pretreatment mechanism, so the cleaning mechanism is tightly connected to the box, the cleaning mechanism is communicated with the filtering mechanism, the cleaning mechanism is communicated with the pretreatment mechanism, the temperature control mechanism is tightly connected to the box, the detection mechanism is tightly connected to the box, the temperature control mechanism is fixedly connected to the box for adjusting the temperature, the liquid to be treated enters the pretreatment mechanism, undergoes pretreatment processes such as homogenization, neutralization, flocculation and precipitation, removes most of the impurities, prepares for subsequent filtration, is finely filtered by the filtering mechanism, and is quality monitored by the detection mechanism after filtration.

The invention relates to the technical field of valves, and discloses a large-flux flat gate valve which comprises a valve body, a valve cover is connected to the top of the valve body, a valve rod is slidably mounted at the top of the valve cover, an upper gate plate is connected to the bottom of the valve rod, and two lower gate plates are slidably connected to the bottom of the upper gate plate; the anti-deposition device is used for preventing sediment from being deposited in the valve body; the cleaning device is used for cleaning the surface of the lower flashboard; and the icebreaking device is used for breaking an ice layer attached to the surface of the lower gate plate. Through the cooperation of the two lower gate plates and the two movable valve seats, the two lower gate plates can move towards the two movable valve seats by a certain distance when being closed downwards, so that the two lower gate plates are attached to the two movable valve seats correspondingly, and the two lower gate plates can be fixed at different environment temperatures under the elastic action of the two rubber rings and the two rubber blocks. The two lower gate plates can be attached to the two movable valve seats, and therefore the sealing performance is guaranteed.