46results about How to "Thorough decontamination" patented technology

The invention relates to cleaning materials, in particular to a cleaning material with the functions of descaling and sterilization for a washing machine. The invention provides a special tub lotion for the washing machine. The special tub lotion is formed by mixing ingredients A, B, C and D, wherein the ingredient A is one or more of hypochlorite, percarbonate and perborate, the ingredient B is one or more of calcium oxide, sodium hydroxide, potassium oxide and sodium oxide, the ingredient C is one or more of the OP series, the TX series and the AEO series of a nonionic surfactant, and the ingredient D is one or more of sodium silicate, stearic acid, dextrin and pregelatinized starch. The special tub lotion for the washing machine has the advantages of more thoroughness in descaling, non-toxicity and harmlessness and environment-friendliness, and the scale can be effectively removed at the same time while the effective sterilization is achieved.

The invention discloses a novel technique for extracting L-tryptophan from fermentation broth, which includes the following steps that: fermentation broth is pretreated, and the treated liquid is pumped into a ceramic microfiltration membrane filter, so that tryptophan microfiltrate without mycelium and mycoprotein are obtained; the tryptophan microfiltrate is pumped into an ultrafiltration membrane filter, so that tryptophan ultrafiltrate and concentrated liquid containing pigment and protein are obtained; the tryptophan ultrafiltrate is pumped into a nanofiltration membrane filter, so that concentrated tryptophan liquid and permeate containing salt are obtained; waste filtrate is comprehensively utilized to produce protein feed; industrial ethylic acid is used for promoting low-temperature crystallization, crystallization mother liquid is treated by the ion exchange method and used, and after crystals are centrifugally dehydrated and dried, the L-tryptophan product is obtained. The invention solves the problem on how to recover industrial ethylic acid, and greatly increases the extraction rate of L-tryptophan; and since the filtrate and the mycoprotein are comprehensively utilized, the product profit is maximized. The total extraction rate of L-tryptophan is 85.2 percent, and the refined product meets the standards of Chinese Pharmacopoeia edition 2005.

The invention discloses a multi-stage air purification device for a workshop. The multi-stage air purification device comprises a box body, and an air inlet pipe is fixedly connected to the left sideof the box body. A gas collecting fan is rotatably connected to the inner portion of the left side of an air guide duct, and the lower end of a layering purifier is fixedly connected with a pressure dissolved air tank. A culture medium table is fixedly connected to the middle portion of a purifying pond, and a sediment scraper is arranged above the purifying pond. An ion purifying box is arrangedabove the sediment scraper, and negative ion poles are fixedly connected to the middle portion of the ion purifying box. The upper ends of the negative ion poles are fixedly connected with ionizationrods, and deposition storage bins are fixedly connected to the inner walls of the left side and the lower side of the ion purifying box. The upper left inner wall of the ion purifying box is fixedly connected with positive charge poles, and adsorption strips are fixedly connected to the outer sides of the positive charge poles. A drying box is arranged on the right side of the ion purifying box, and the left end of a U-shaped tube is fixedly connected with the air guide duct. The right end of the U-shaped tube is fixedly connected with an exhaust pipe, and a small electromotor and the ionization rods are electrically connected with an external power source. The multi-stage air purification device has the advantages of low consumption, high efficiency, multi-stage thorough purification, simple operation and no secondary pollution.

The invention provides a dismantling-free cleaning device, cleaning method and application of a bearing seat of a cold rolling mill. The device includes an ultrasonic generator and a matching closed washing tank, and a high-frequency pulse oscillation is arranged in the closed washing tank. Generator, the bearing seat to be cleaned is placed in the airtight washing tank, the inner cavity of the bearing seat to be cleaned forms an ultrasonic cleaning container, and the lubricating liquid inlet and outlet channels of the bearing seat lubrication system to be cleaned respectively form the ultrasonic cleaning container The cleaning liquid inlet and liquid outlet of the cleaning liquid, the cleaning liquid inlet is connected to the cleaning liquid storage container through a multi-stage centrifugal pump, and the cleaning liquid outlet is connected to the cleaning liquid storage container through the cleaning liquid return pipeline , the shaft body of the bearing seat to be cleaned is connected with a centrifugal drive shaft.

The invention relates to the technical field of permanent magnets and particularly relates to a machining method of a neodymium-iron-boron permanent magnet. The machining method comprises the following steps: A, preparing materials; B, stacking: stacking and binding the raw materials prepared by the step A into an asbestos board to obtain a bound material block; C, cutting: cutting off end part marginal materials of the bound material block obtained by the step B in one step and cutting according to product size requirements to obtain a semi-finished-product material block and a residual material block; D, boiling into powder: putting the semi-finished-product material block obtained by the step C into a boiling solution added with an additive to be boiled into powder, boiling the semi-finished-product material block into powder and dispersing to obtain a rough magnet block; E, controlling the size and carrying out chamfering treatment: putting the rough magnet block obtained by the step D into a polishing machine to be polished; and F, electroplating and magnetizing: carrying out electroplating treatment on the rough magnet block obtained by the step E and carrying out magnetizing treatment on the rough magnet block after the electroplating treatment is finished to obtain a finished-product magnet. The machining method has a simple preparation process, high production efficiency and excellent and lasting corrosion resistance.