92results about How to "Avoid washing" patented technology

A bit retention apparatus for the use of retrieving the hammer bit in cases of shankage. The apparatus incorporates a dual sleeve design that fits over the chuck and the extended head section of the hammer bit. The first, “inner” sleeve has two or more ring pieces that fit onto the chuck and have the retention ring fitted into the lower section of the sleeve. The second, “outer” sleeve fits onto the chuck over the inner sleeve to provide protect to the inner sleeve while pulling the shanked bit out of the well bore. Attachment to the bit is accomplished by collars, knobs, or threads on the interior of the sleeves that correspond with holding bands, retention rings, or threads on the bit and chuck.

The invention discloses a zirconium hydroxide solid-phase grinding synthesis method. The method of high purity zirconium hydroxide comprises the following steps: adding zirconium hydroxide in a mixing machine, adding dispersant of which weight ratio to zirconium hydroxide is 0.005-0.02; adding solid sodium hydroxide in the mixing machine; starting the mixing machine for mixing and aging, pouring materials in a grinder, transferring the grinded materials into a vacuum suction filtration tank; pumping 40-90 DEG C of pure water of which weight ratio to the materials is 1-10:1 in a suction filtration tank, draw off water after soaking, adding 40-90 DEG C of pure water of which weight ratio to the materials is 1-10:1 again; and rinsing 2-8 times with pure water, transferring the product to a centrifuge to centrifuge for 10-30 minutes, and packaging to obtain the finished product. The method of the invention reduces the flow, simplified devices and reduces the water consumption; in addition, the devices are easy to operate and the production cost is reduced.

The invention provides a method for solvent recovery in a polyphenylene sulfide synthesis process. The method includes: subjecting a synthesis reaction generated product to solid-liquid separation by a centrifugal machine or filter press at 40-80DEG C; drying the solid product by a vacuum double-cone rotary dryer or a vacuum rake dryer at 100-150DEG C and under an operation pressure of not greater than -0.096MPa, using condensed water to conduct condensation at normal temperature to recover a solvent; and sending the recovered solvent and the filtrate obtained from solid-liquid separation directly to a rectifying tower to undergo rectification treatment. The method provided in the invention adopts vacuum drying equipment to dry the separated reaction product, and directly recovers the solvent, thus avoiding other solvent washing and water washing in commonly used solvent recovery methods, greatly reducing energy consumption and material consumption, and improving the solvent recovery rate.

The invention discloses a copper foil anti-oxidation treating fluid, a preparation method of the copper foil anti-oxidation treating fluid and copper foil anti-oxidation treating equipment. The copper foil anti-oxidation treating fluid comprises the following raw material ingredients by weight: 0.05-0.1 g / L hydroxybenzotrizole (HBTA), 0.02-0.05 g / L 2-mercaptobenzothiazole (MBT), 0.1-0.5 g / L of silver nitrate, 0.1-0.5 g / L sodium molybdate, 0.05-0.1 g / L phosphoric acid, 0.5-3 g / L boric acid and the balance of pure water. The copper foil anti-oxidation treating fluid can prevent water washing, reduces the water treatment cost, does not contain such harmful substances to the environment as hexavalent chromium, and meets the demand for environmental protection; an anti-oxidation and anti-passivation film is stable under the high-temperature condition and does not contain zinc metal; and such unstable problems as resistance reduction of a copper foil are solved. A liquid inlet of an anti-oxidation treatment groove of the copper foil anti-oxidation treating equipment is positioned above one end of the feeding side of a copper foil roller, so that two surfaces of the copper foil can be subjected to full anti-oxidation treatment.

The invention relates to an intermediate for synthesizing butene liquid crystal and a synthesizing method thereof. The intermediate for synthesizing butene liquid crystal has a general formula structure as the right, which is shown in a right formula (I) or alkyl of C1-C7 or alkoxy of C1-C7; when in a right formula (II), X is H or F, Z is H or F, Y=F or alkyl of C1-C7 or alkoxy of C1-C7 or -OCHF2 or -OCF3 or -CF3 or CHF2; and n=0 or 1. The synthesizing method lies in that corresponded raw material alcohol is reacted with methyl sulfonic acid chloride in solvent with the presence of catalyst. The synthesizing method has a fast reaction without other side products, the post treatment process is simple and handy and the obtained product has high yield coefficient and purity.

The present invention provides systems and methods for filtering particles and assisting gas flow management within laser systems. In one embodiment, a laser apparatus (100) includes an elongate laser chamber defining a chamber cavity (130) and an electrode structure (140) disposed therein. The electrode structure includes an anode (148) spaced apart from a cathode (146). The laser includes an elongate baffle (174) disposed in the laser chamber. The baffle is adapted to arrest a plurality of particles generated within the chamber. In this manner, the baffle operates as a passive filtration system to help filter particles generated within the chamber during laser operation, and may further provide gas flow management capabilities.

The invention belongs to the technical field of washing, particularly relates to a washing device control method, and aims to solve the problem that working effects of an existing washing machine arereduced as the feeding quantity of washing agents and washing water quantity are not matched. According to the washing device control method, washing procedures of a washing device can be selectivelyadjusted according to foam quantity parameters generated by washing water, and harmful influence caused by improper feeding or improper water intake quantity on working effects of the washing device is furthest reduced. The matching degree between the feeding quantity of the washing agents and the water intake quantity and the relational degree among the feeding quantity of the washing agents, thewater intake quantity and washing effects are reduced, and the difficulty of a user in using the washing device is reduced.

The invention discloses a flame retardant polyurethane sponge, a preparation method and application thereof. The method includes the specific steps of: soaking polyurethane sponge in a halloysite nanotube aqueous dispersion, extruding the polyurethane sponge with effort, and conducting stirring or ultrasonic treatment to coat halloysite nanotubes uniformly on the polyurethane sponge; placing the polyurethane sponge in drying equipment, and turning over the sponge once at set intervals; after gradual evaporation of the liquid, removing the halloysite nanotubes that are not firmly combined, thusobtaining the halloysite nanotube coated modified flame retardant polyurethane sponge. The preparation method provided by the invention uses water as the dispersing medium, is free of environmental pollution, and has no need for a complicated layer-by-layer assembly process. The method is carried out at room temperature, has the characteristics of simple operation, good repeatability, no involvement of chemical process, low cost and no use of organic solvent, also can self-extinguishing flame retardance of polyurethane sponge, and the combustion process is free of smoke and dripping.

A mirror assembly (30) has a housing (32) that houses a mirrored reflecting surface (40) for enabling a person in a driver's compartment of a vehicle cab (10) to look through a side door window opening (20) and see a field of view toward the rear of the vehicle. The mirror assembly mounting (32) includes a mounting bar (42) that is attached to the side door, that has a length running along the top margin of the door, and that along at least a portion of that length comprises an upwardly open channel (50) for collecting rainwater runoff from the roof and carrying it rearward before the runoff can wash across the window opening.

The invention provides a novel chlorobenzene production process. Chlorobenzene used in the novel chlorobenzene production process comprises the following raw materials: anhydrous benzene, chlorine, acatalyst and a positioning agent. The novel production process comprises the following steps: preparing the anhydrous benzene; enabling the anhydrous benzene to flow out from the bottom of a benzene high-level tank, metering by using a flowmeter, and continuously putting into a chlorinator from the bottom of the chlorinator; buffering qualified chlorine made after gasification of liquid chlorine by using a chlorine buffer tank, introducing into the chlorinator from the bottom of the chlorinator to flow upwards together with the anhydrous benzene along flows in a same direction, carrying out areaction under the action of the catalyst and the positioning agent in the chlorinator so as to generate a chlorination liquid, and carrying out aftertreatment on the chlorination liquid, thereby obtaining chlorobenzene. By adopting the novel production process provided by the invention, the problem that a great deal of wastewater is generated from water washing and alkali washing in the conventional method can be avoided, no wastewater is generated, in addition, the catalyst is long in service life, the equipment is long in service life, the detection cycle can be prolonged, a product made byusing the process is high in purity, and due to adoption of an iron catalyst and chelate EDTA-Fe with iron as the center as the positioning agent, the process is low in wastewater generation rate andgreen, environmentally friendly and fee of pollution.