3results about How to "Prevent Static Interference" patented technology

The utility model discloses a prefabricated cabin of primary and secondary equipment electromagnetic shielding isolation arrangement relates to substation equipment technical field, include: prefabricated cabin shell, the double -deck metal partition that divides the cabin body into primary equipment cabin and secondary equipment cabin and lay in the high -elevation type electrostatic bottom plate of secondary equipment cabin bottom, install primary equipment in the primary equipment cabin, install secondary equipment in secondary equipment cabin, and secondary equipment is fixed on the upper surface of electrostatic bottom plate, the utility model discloses through double -deck metal partition separates primary and secondary equipment cabin, and sets up with electromagnetic shielding function's secondary cable passageway, effectively prevents the influence of electromagnetic interference to secondary equipment. Meanwhile, the high -elevation type electrostatic bottom plate is laid in secondary equipment cabin, avoids static interference, improves the stability and reliability of equipment operation, adopts prefabricated cabin formula structure, and the land area of substation is greatly reduced in intensive design.

The invention discloses a dynamic inspection and calibration system of a constant feeder, which relates to the technical field of metering and calibration and comprises a dust early warning end, an electrostatic early warning end and a dynamic calibration end, the dust early warning end is used for calculating the deviation between the initial weight and the running weight of a conveying belt in real time by monitoring the weight of materials detected at different positions of the constant feeder in the feeding and conveying process in real time; the static early warning end is used for obtaining static abnormity in the material conveying process in time and removing static electricity in time when the static abnormity occurs. The dynamic calibration end is used for checking and judging whether the feeding weight deviates or not in real time, and dynamic checking, calibration and judgment are conducted in real time by combining the discharging amount of different discharging port angles. According to the dynamic inspection and calibration system of the constant feeder, the abnormal metering condition of the constant feeder can be found in time, the static electricity abnormity of material conveying can be judged in real time, and the material weight of the feeder can be accurately inspected in real time according to the actual dynamic change condition.

The utility model relates to laboratory powder spraying equipment capable of preventing static interference. The laboratory powder spraying equipment comprises a cabinet body and a small-dose powder outlet spray gun system, a powder feeding cavity, a middle cavity and a powder collecting cavity are formed in the cabinet body. Plastic plates are arranged on the top face, the left side face, the right side face and the bottom face of the powder feeding cavity. The small-dose powder discharge spray gun system comprises a fluidization cylinder, and the powder storage amount of the fluidization cylinder is 10-150 g. A powder outlet of the Venturi powder pump is connected with the spray gun; the powder adjusting mechanism is suitable for adjusting the concentration amount of the powder pumped out by the powder pumping pipe. According to the laboratory powder spraying equipment capable of preventing electrostatic interference, the plastic plate is arranged in the powder feeding cavity, so that electrostatic interference caused by electric conduction of metal plates on the periphery to electrostatic spraying is avoided, metal powder is close to spraying on a production line when a sample plate is sprayed in a laboratory, and the accurate powder spraying effect is achieved; and the quality inspection accuracy of a sample plate manufactured in a laboratory is ensured. On the premise of ensuring the accuracy, the equipment is very convenient to use and clean afterwards.