8results about How to "Avoid secondary adsorption" patented technology

The invention relates to an environment-friendly process method for improving the surface metal cleaning efficiency of a silicon wafer, and belongs to the technical field of semiconductor silicon wafer processing, and the process method comprises the following operation steps: S1, pre-cleaning and activation: placing the silicon wafer in a first cleaning tank, introducing ozone into ultrapure water, and processing in cooperation with low-frequency ultrasound; and S2, main cleaning and complexing: placing the silicon wafer subjected to pre-cleaning and activating treatment in a second cleaning tank, and treating the silicon wafer in a dilute citric acid solution in cooperation with high-frequency ultrasound. And S3, overflow rinsing: placing the silicon wafer subjected to main cleaning and complexing treatment in a third cleaning tank. And S4, drying: carrying out drying treatment on the silicon wafer subjected to the overflow rinsing treatment. Through the synergistic effect of physical stripping, chemical oxidation and complexing dissolution, under the condition that highly toxic chemicals such as hydrofluoric acid are not used, the cleanliness of metal on the surface of the silicon wafer reaches the ppt level, and the problems that traditional RCA cleaning is serious in environmental pollution and high in operation risk are effectively solved.

This utility model provides a lint removal device for fabric processing, including a cleaning chamber with a cleaning cavity inside. Both ends of the cleaning chamber have inlet and outlet ports. A first guide shaft, a second guide shaft, and a third guide shaft are rotatably connected within the cleaning cavity. Guide rollers are fixedly fitted onto the outer surfaces of each of the three guide shafts. A lint loosening component and a lint suction device are located between the first and second guide shafts, and an electrostatic elimination mechanism is located between the second and third guide shafts. This design utilizes a spacing adjustment mechanism consisting of an elliptical drive block, an adjusting collar, and a sliding component. This allows the cleaning roller to slide back and forth along the fabric transport direction while rotating and combing the lint, thereby achieving periodic dynamic adjustment of the contact distance between the cleaning roller and the fabric, significantly improving the uniformity and coverage of lint loosening.

The utility model relates to kitchen utensil technical field, concretely relates to a frying basket, including frying basket main part and support frame, the frying basket main part includes basket side wall, basket bottom plate and filter screen part, and the basket bottom plate is inclinedly arranged from the lower edge of basket side wall to the middle region of basket bottom plate downward and extends to filter screen part, in the application, grease is drained to the filter screen part in the basket bottom plate and is concentratedly discharged, so that grease is rapidly gathered and directionally discharged, the time of grease retention in the frying basket is shortened, and the residual grease in the frying basket main part is reduced, food secondary adsorption of grease is avoided, food taste is better, due to the fact that food grease intake is reduced, health diet demand is met, and the dead angle is cleaned simultaneously, and the utility model has the beneficial effect that cleaning is convenient.

The utility model relates to the technical field of flue gas recovery, in particular to a flue gas graded cooling heat recycling system which comprises a first flue gas exhaust pipeline, a first baffle plate is fixedly connected to the upper end of the first flue gas exhaust pipeline, and a heat exchange assembly is arranged on the upper side of the first flue gas exhaust pipeline. The heat exchange assembly comprises a dust collecting cylinder, a heat exchange cylinder, a partition plate, a heat exchange pipe, heat exchange fins, a water inlet pipeline, a water drainage pipeline, an electric motor, a transmission rod, a connecting rod and an arc-shaped scraper, the lower end of the dust collecting cylinder is fixedly connected with a sealing sleeve, the sealing sleeve is fixed to the surface of the first smoke exhaust pipeline, and the heat exchange cylinder is fixed to the upper end of the dust collecting cylinder; and the electric motor drives the arc-shaped scraping plate to rotate by clinging to the inner wall of the heat exchange tube through the transmission rod to scrape particle dust adsorbed on the inner wall of the heat exchange tube, so that heat of flue gas is directly exchanged with cold water through the heat exchange tube and the heat exchange fins, and the heat exchange effect is improved.

The utility model relates to mould technical field, concretely relates to a mould structure of yoghourt cup, including the hot runner board, fixed mould plate backing plate, fixed mould plate, push block, movable platen, movable platen support plate and bottom plate that set up in sequence, install needle valve hot runner in hot runner board, fixed mould plate backing plate inlay cooling water jacket assembly, and cooling water jacket assembly surrounds the hot nozzle area of needle valve hot runner, the welding forming process of integral type cooling water jacket has improved the cooling efficiency of hot nozzle significantly, has eliminated gate rubber silk and peeling defect completely, and simultaneously combines three -fold broken vacuum technology - dish type elastic sheet momentary elastic break before mould adsorption, adjustable airflow channel precision injection break behind mould vacuum, delay push block ejection prevents secondary adsorption, systemic solution thin -walled yoghourt cup demolding deformation and sticking mould problem, the time -sequence control chain of fast response makes product demolding intact rate improve greatly, mould abnormal failure rate tends to zero.

This utility model discloses a communication signal transceiver device, including an infrared transceiver with an arc-shaped cavity structure. Multiple infrared plates are arranged on the front side of the transceiver, and each infrared plate has a filter plate on its front side. A cleaning mechanism is provided on the transceiver, comprising fixed plates symmetrically fixedly connected at the upper and lower edges of the front ends of the transceiver. A screw is rotatably connected between each pair of fixed plates arranged along the axial direction of the transceiver. This communication signal transceiver device, by designing the infrared plates and filter plates as multiple independent arc-shaped components, achieves "local replacement for local damage," reducing maintenance costs and improving economy. Furthermore, the arc-shaped design, combined with an arc-shaped cleaning brush made of conductive silicone material, enhances signal transmission and reception stability and anti-interference capabilities, ensuring stable transmission and reception of infrared signals in complex meeting environments.

The utility model discloses a cleaning device for shock absorber production relates to continuous damping control shock absorber cleaning technical field, including setting in the conveying mechanism top for the dust removal of shock absorber seal end's cleaning component. The clean gas enters the guide groove from the air inlet, and the airflow is uniformly guided to the seal end, and the dust adhered to the seal end is pneumatically cleaned, at this time, the dust collection groove area forms a negative pressure, can extract the dust, realizes the closed collection of dust, the guide arc surface that is set up on the guide groove can form secondary direction to the airflow, make the airflow downward movement, when the airflow is blocked by the shock absorber seal end and turns back upward, can be wrapped up and down the dust and moves upward to the negative pressure dust collection area, thereby further improve the dust collection effect, avoid the dust falling secondary adsorption in the shock absorber seal end, whereby the shock absorber is in the inflation process, the inflation gas in will not mix with the dust and enter the shock absorber inside, guarantee product overall cleanliness and follow -up use performance.

This invention discloses a dust removal device and method for tail gas from water-soluble fertilizer production, relating to the field of tail gas dust removal technology. The device and method include a dust removal cylinder with a tangential air inlet pipe on one side, causing the tail gas to enter the cylinder and move in a spiral motion. Dust particles within the tail gas undergo initial settling due to gravity and centrifugal force. This invention utilizes a moving mechanism and an air jet assembly to unfold and enclose coarse and fine filter plates into a sealed cylinder. Each coarse and fine filter plate forms a narrow channel with the inner wall of the dust removal cylinder. Pulsed airflow thoroughly cleans the coarse and fine filter plates, and the stripped dust falls into the narrow channel, effectively suppressing large-scale dust dispersion and diffusion, reducing airflow disturbance, minimizing dust dispersion space, accelerating agglomeration and settling, and preventing secondary adsorption caused by dust re-entrainment.