4results about How to "Low operating pressure" patented technology

This invention discloses a pressure regulating valve and a method for regulating the pressure of a coke oven carbonization chamber. The valve includes a single-adjustment regulating valve comprising: a shell with a through-hole channel running vertically through it, one end of which is connected to the output port of a bridge pipe, and the other end of which is equipped with a water seal valve; a valve plate with a rotating shaft on one side, the valve plate being rotatably disposed within the channel, the rotating shaft being used to control the opening and closing degree of the valve plate; and an adjusting component including an adjusting gear and a driving component. The adjusting gear is sleeved on the rotating shaft to drive the rotating shaft to rotate. The adjusting gear has a first locking tooth and a second locking tooth arranged around its center, the number of teeth in the first locking tooth being greater than the number of teeth in the second locking tooth. The driving component includes a driving gear, the driving gear meshing with the first locking tooth and the second locking tooth respectively.

This invention belongs to the field of wet electronic chemical purification, specifically relating to a membrane chromatography filter membrane for removing charged ions from liquids and its preparation method, including the following steps: S1, preparing casting solutions: preparing positively charged layer casting solutions, neutral layer casting solutions, and negatively charged layer casting solutions separately; S2, using a three-layer die to sequentially extrude the positively charged layer casting solutions, neutral layer casting solutions, and negatively charged layer casting solutions onto a polyester film; S3, exposing the casting solutions under set temperature, humidity, and airflow conditions to allow for initial phase separation; S4, immersing the coated film in a pure water coagulation bath to complete phase separation and solidification; S5, rinsing, drying, and then winding to obtain the membrane chromatography filter membrane. By designing a special three-layer composite structure with a "positively charged layer-neutral layer-negative layer," the filter membrane can simultaneously adsorb anions and cations in the solution during a single filtration process, overcoming the limitation of traditional single-charge membranes that can only remove one type of ion, thus improving purification efficiency.

This invention discloses a low-energy-consumption mixed C4 alkane-olefin separation device, comprising: a C4 evaporator or tank, an extractive distillation column for separating alkane and olefin, and a stripping column. The inlet of the extractive distillation column is connected to the top outlet of the C4 evaporator or tank, the stripping column is connected to the bottom of the extractive distillation column, and the top of the stripping column is connected to the inlet of a C4 olefin reflux tank. A chilled water system is also connected between the top of the stripping column and the inlet of the C4 olefin reflux tank to cool the C4 olefins before reflux. By installing a chilled water system at the top of the stripping column, this invention allows for lower-pressure operation within the stripping column, reducing overall energy consumption, optimizing the process flow, and simplifying the number of equipment. Furthermore, the separation effect of olefins cooled to low temperatures by chilled water under low pressure is better, improving the recovery rate and purity of C4 alkane and C4 olefin.

The utility model provides a kind of bolt forming device, it is related to bolt processing technical field, the bolt forming device includes installation platform, forming part, placing part, and placing part is used to place the cylindrical blank for processing bolt, placing part is set on installation platform and can be moved along installation platform;Power part, power part is set on installation platform, and can control placing part to move;Discharge part, discharge part is set on forming part, and discharge part is used to guide the bolt formed to the material guide inclined plane of installation platform, this kind of bolt forming device when using, staff only needs to place cylindrical blank into placing groove and bottom groove, when cylindrical blank is processed into bolt blank, by the baffle and slot for setting, bolt blank after completing processing can be directly transferred to material guide inclined plane, the transfer of bolt blank does not need manual participation of staff, only needs to be responsible for the feeding of cylindrical blank, reduce operating pressure, and use effect is good.