30results about How to "Quantitative control is accurate" patented technology

The invention provides propelled dust aerosol generating equipment. The equipment comprises a front opened syringe and a stepping motor, wherein the front opened syringe loads powder; the rotation speed of the stepping motor can be adjusted; the stepping motor drives a ball screw to rotate so that a ball nut drives an advancing block to move; a manual adjusting wheel is arranged on the advancing block and can slightly adjust the front opened syringe; a front limit switch and a rear limit switch control the maximal stroke of the advancing block; the powder is pushed into a dust dissolving and separating cavity and bumps with microspheres driven by air flow entering from an air inlet to generate atomized aerosol; and the atomized aerosol is sent to a sealed diffusing cabin through an air outlet and a pipeline. The invention provides the dust aerosol generating equipment, which is precisely and quantificationally controlled, is not easy to block and uniformly dissolves and separates dust; a large amount of dust aerosol can be convenient to prepare reliably; the equipment is applied to researches in the aspects of environmental science, atmosphere physics and chemistry, weather science, industrial manufacturing, medicament and health, and the like, and required dust aerosol related tests and production; a new method is developed; and the precision and the efficiency are improved.

The invention relates to an automatic quantifying water supply device which comprises a quantifying device 1, a stirring device 2, a water filling device 3, a draining device 4 and an automatic control device 5. The automatic quantifying water supply device is characterized in that the quantifying device 1 comprises a water storage bucket 1-1 and a lower bound contact 1-12. An upper bound contact 1-8 is fixed at the lower end of a lifting lead screw 1-7, a neutral contact 1-10 is fixed at the lower end of a neutral current conducting rod 1-9, and the lower bound contact is fixed at the lower end of a lower bound current conducting rod 1-11. The lifting lead screw 1-7, the neutral current conducting rod 1-9, the lower bound current conducting rod 1-11, the upper bound contact 1-8, the neutral contact 1-10 and the lower bound contact 1-12 are respectively arranged in the water storage bucket 1-1 which is arranged below a bucket cover 1-2 to form a liquid level control mechanism together. The automatic quantifying water supply device has the advantages of being high in automation, accurate in quantifying control, convenient to adjust in a quantifying mode, and suitable for industrial producing, capable of saving producing cost, improving product quality, reducing labor intensity, and being stable and reliable in performance.

An electrolytic copper plating solution analyzer comprises an analysis container for accommodating a part of an electrolytic copper plating solution containing additives including a promoter, an inhibitor and a leveler, a working electrode immersed in the electrolytic copper plating solution accommodated in the analysis container, a reference electrode immersed in the electrolytic copper plating solution and used as a reference when a potential of the working electrode is determined, a counter electrode immersed in the electrolytic copper plating solution, a rotation drive unit for rotating the working electrode at a given speed, a current generation unit passing an electric current with a given current density between the working electrode and the counter electrode, a potential measurement unit for measuring the potential between the working electrode and the reference electrode, and an analysis unit for analyzing the relationship between an elapsed time after the current passage and the potential.

The invention discloses a method for controlling quality of euphorbia kansui decoction pieces, which comprises a step of determining the content of 3-O-(2,3-dimethylbutanoyl)-13-O-oxododecyl ingenol and euphol in fresh and processed euphorbia kansui. The method uses the separated 3-O-(2,3-dimethylbutanoyl)-13-O-oxododecyl ingenol and euphol as indexes, establishes a method for detecting HPLC-ELSDfor controlling the quality of the euphorbia kansui decoction pieces, has simple and quick operation, and is applicable to quality control of the fresh euphorbia kansui and the processed euphorbia kansui decoction pieces.

The invention provides a multi-pump multi-frequency-conversion emulsion pump station system for mining. The multi-pump multi-frequency-conversion emulsion pump station system for mining comprises 400 KW frequency conversion control cabinet, a 110KW frequency conversion control cabinet, four 400 L / min emulsion pumps and a 80 L / min emulsion pump. One end of the 400 KW frequency conversion control cabinet is connected with the 110 KW frequency conversion control cabinet, and the other end of the 400 KW frequency conversion control cabinet is connected with the four 400 L / min emulsion pumps. The 110KW frequency conversion control cabinet is further connected with the 80 L / min emulsion pump. The multi-pump multi-frequency-conversion emulsion pump station for mining adopts the multi-pump multi-frequency-conversion drive manner, the four emulsion pumps with the rated flow of 400 L / min and the emulsion pump with the rated flow of 80 L / min are arranged, each pump can achieve frequency conversion speed control and electronic control loading and unloading, the emulsion supply flow adjustment range can reach 0-1680L / min, and the highest adjustment precision can reach 1.6 L / min; on the basis of the multi-pump multi-frequency-conversion emulsion pump station system for mining, a rated emulsion supply control method is provided. According to the rated emulsion supply control method, through PLC programming in the control cabinet, the multiple pumps are controlled to operate at the industrial frequency, multi-frequency-conversion speed adjustment is controlled, accurate and quantitative control over high-pressure emulsion flow is achieved, and a reliable underlying control basis is provided for further intelligent emulsion supply.

The present invention discloses a digital ink duct for a printing press, comprising an ink tank for storing ink, a main ink pipe that communicates with the ink tank, at least one metering-type ink delivery device, ink delivery pipes, a controller and a signal acquisition device. In the present invention, high-accuracy, metering-type ink delivery devices are arranged in a queue to form a digital ink duct which replaces the traditional ink duct and supplies ink for the ink zones. The present invention can perform accurate adjustment in real time, is high in automation and digitalization degree, and can realize one-way ink delivery and avoid ink return.

The invention relates to a liquid remote quantitative loading system, which includes an upper bracket, a remote alignment system, an automatic loading crane installed on the upper bracket, a control box and a metering system; the touch rod touches the oil storage tank The control box controls the vertical pipe to extend into the tank mouth of the oil storage tank and stops when it reaches the entrance distance. The control box controls the oil pump to start and start loading oil. The protective shell floats with the liquid surface. When the inner bottom wall of the protective shell triggers the float switch The control box controls the stop of the oil pump; the invention can quickly align the vertical pipe with the tank mouth of the tanker, and designs a float level gauge to automatically control the start and stop of the oil pump and measure the liquid level of the tanker, so that it can replace the flow meter Or manual control to realize the start and stop control of the oil pump, and the quantitative control is more accurate; the invention can realize unmanned filling on site, accurate measurement, can improve the efficiency of oil filling operation, and achieve the goals of safety, energy saving and production increase.