3results about How to "Increase the differential pressure" patented technology

The present application relates to the technical field of metal casting, and particularly discloses a core making machine, which is provided with at least two regulating systems in the circumferential direction of the side wall of a core box. During sand shooting, the exhaust adjusting branch of the regulating system controls the exhaust amount during sand shooting to avoid excessive pressure drop loss, and the negative pressure adjusting branch adjusts the vacuum degree in the cavity to increase the pressure difference between the region and other regions, improve the flowability of the sand, and facilitate compacting of the sand, thereby achieving good core making effect. During solidification and blowing, the blowing mechanism can blow triethylamine gas into the cavity through the top and side of the core box, achieve the best solidification and air intake combination, increase the air intake area, shorten the solidification time, improve the solidification efficiency, and increase the opening of the exhaust adjusting branch to increase the exhaust amount of the corresponding region and ensure smooth air intake. The present application also provides a sand shooting and solidification process control method applied to the core making machine.

The application provides a sewage treatment equipment with intelligent dosing and chlorination, and relates to the technical field of sewage treatment.The sewage treatment equipment with intelligent dosing and chlorination is installed on a main pipeline through a metering pump, an electromagnetic flowmeter is installed on the upstream of the main pipeline, and an exhaust part and a full-flow part are sequentially connected in the water flow direction on the upstream of the main pipeline;the upstream of the exhaust part is connected to the main pipeline, the exhaust part is connected to the full-flow part, and the downstream of the full-flow part is connected to the electromagnetic flowmeter;the exhaust part is designed as a transverse Venturi tube, multiple gas collection cabins are uniformly arranged on the throat of the exhaust part, the inner diameter of the gas collection cabin is larger than that of the throat, the bubbles in the fluid are extracted and gathered through the low pressure formed by the position of the throat, and an exhaust valve is connected to the top end of the gas collection cabin;the full-flow part is arranged as a U-shaped tube with low upstream and high downstream, the U-shaped opening formed by the full-flow part is upward, a liquid seal is formed in the full-flow part to realize stable liquid level, buffer pressure fluctuation, and ensure that the downstream fluid forms a full-pipe state.

The utility model provides a kind of continuous sewage silicon dioxide flocculation recovery device, it is related to water treatment technical field, including expansion tank, the middle part of expansion tank is provided with partition baffle, the partition baffle is divided into flash chamber and flocculation chamber in expansion tank, the side wall middle part of flash chamber is connected with water inlet, the water inlet is connected with shower head assembly inside, the top of flash chamber is provided with plate heat exchanger, flocculation tank is fixedly installed in flocculation chamber, several aluminum base electrode plates are installed in flocculation tank, driving shaft is rotatably connected in the middle part of flocculation tank, driving motor is fixed in the top of flocculation tank, the output end of driving motor is connected in driving shaft top, several stirring scrapers are installed on driving shaft.The utility model is in by being arranged cooling section in expansion tank, the wastewater that enters into flocculation tank is kept in suitable flocculation temperature range, avoid the corrosion of high temperature to aluminum base electrode plate.