11results about How to "Friendly working environment" patented technology

The invention discloses a short-flow process for purifying tellurium from crude tellurium, which comprises the following steps: carrying out water washing treatment on crude tellurium to be treated, and carrying out liquid-solid separation to obtain washed crude tellurium; the obtained washed crude tellurium is subjected to pyrogenic oxidation treatment, and tellurium oxide slag is obtained; the obtained tellurium oxide slag is subjected to leaching treatment, and tellurium leaching liquid is obtained; and the obtained tellurium leachate is sequentially subjected to electrodeposition and casting treatment, and tellurium purification is completed. The method has the beneficial effects that the technological process is short, the yield is high, less chemical agents are used, the cost is low, the crude tellurium is converted into the 4N refined tellurium through the mode of combining the pyrogenic process and the wet process, the refined tellurium smelting process is effectively shortened, intermediate products are few, and the tellurium yield can be increased to 95% or above.

The invention belongs to the technical field of detergents, and particularly relates to a preparation method of a composite fluorescent whitening agent. The method comprises an acylation reaction, a sulfonation reaction, a carbonyl reduction reaction, a dehydration reaction and a sulfonic acid salification reaction. Compared with a commercially available fluorescent whitening agent such as CBS, the composite fluorescent whitening agent synthesized by the preparation method disclosed by the invention has similar application effects, but the preparation process disclosed by the invention is simple, low in cost, environment-friendly in route and environment-friendly in working environment.

The invention discloses an electric nickel production workshop which is used for producing electric nickel and comprises a first workshop, a second workshop, an electrolytic bath, a plurality of functional units, a supporting platform and a transfer mechanism, the second workshop and the first workshop are sequentially arranged in the horizontal direction, and the first floor of the second workshop is connected with the first floor of the first workshop; the electrolytic bath is arranged on the second floor of the second workshop; the plurality of functional units are arranged in a first workshop and are used for processing polar plates in an electric nickel production process; the supporting platform is arranged on the second floor of the second workshop, and the hanging height of the polar plate on the supporting platform is the same as the hanging height of the polar plate in the electrolytic bath; the transfer mechanism is arranged between the first workshop and the second workshop and used for transferring the polar plates between the first workshop and the second workshop. According to the electric nickel production workshop, the service life of the equipment of the multiple functional units is prolonged, the environmental friendliness of the equipment during operation is improved, the lifting stroke of the polar plate of the second workshop during the transfer process is reduced, and the production efficiency and the safety are improved.

This utility model discloses a testing device for sprocket shaft assemblies, comprising: a wall platform with a functional groove on its front side wall, a transmission device disposed within the functional groove, a support platform on the lower outer side of the functional groove, two support frames fixedly spaced on the support platform, a sprocket shaft assembly disposed on the support frames, its outer wall closely fitted to the front side wall of the wall platform, the transmission device being drively connected to the sprocket shaft assembly, a connecting frame on the upper outer side of the functional groove, the connecting frame being hinged to an arc-shaped cover, the arc-shaped cover covering the outer side of the sprocket shaft assembly, the arc-shaped cover having two sets of symmetrically arranged upper and lower latches, each detachably inserting an upper and lower latch. During testing, this sprocket shaft assembly testing device simply requires placing the sprocket shaft assembly on the support frame and securing it using the wall platform and the upper and lower latches of the arc-shaped cover, making assembly and disassembly convenient; furthermore, the arc-shaped cover prevents oil leakage from the sprocket shaft assembly from splashing during testing, making it more environmentally friendly.

This application relates to the field of vehicle technology, specifically disclosing a twin-tube shock absorber and a vehicle, including a working cylinder, a piston rod, and an oil reservoir. The oil reservoir is coaxially sleeved on the outer surface of the working cylinder, forming a sealed oil reservoir chamber between the oil reservoir and the working cylinder. The oil reservoir includes a connecting portion at the end and a bulge integrally formed with the connecting portion. The distance between the radial wall of the bulge and the outer wall of the working cylinder is greater than the distance between the radial wall of the connecting portion and the outer wall of the working cylinder. The working cylinder has a working chamber, with one end of the piston rod disposed in the working chamber and the other end extending out of the working cylinder. When the shock absorber is working, the pressure in the oil reservoir changes slightly but remains relatively stable, thereby making the shock absorber damping stable and sensitive, and optimizing the overall vehicle comfort and stability. At the same time, the stable air pressure in the oil reservoir also makes the working environment of the shock absorber oil seal more friendly, allowing for the design of a higher initial air pressure to improve overall vehicle performance and extend service life.

The utility model relates to additive manufacturing equipment and a quick-release protective glass device thereof, and the quick-release protective glass device comprises a support frame, a protective glass supporting frame, a protective glass supporting frame and a protective glass supporting frame, the floating seat is arranged on the other area of the upper end face of the supporting frame through an elastic piece, the top face of the floating seat comprises a first horizontal plane, a second horizontal plane and an inclined plane, and the first horizontal plane is higher than the second horizontal plane; the protective glass is arranged on the floating seat through a mounting frame; the pressing block is slidably arranged on the guide rail through a sliding block; and the transverse pressing type toggle clamp is installed on the sealing cover, a movable shaft of the transverse pressing type toggle clamp is connected with one end of the pressing block, so that the pressing block is driven to move on the guide rail by rotating a rotating arm of the transverse pressing type toggle clamp, and installation of the protective glass device capable of being quickly disassembled is achieved by pressing down the floating seat. According to the additive manufacturing equipment and the protective glass device capable of being disassembled quickly, the protective glass device capable of being disassembled quickly is easier and more convenient to install, debug and maintain, and therefore the utilization rate of the additive manufacturing equipment is improved.

The invention discloses a material for preparing a carrier roller body, the carrier roller body and a preparation method of the carrier roller body. The material for preparing the carrier roller body comprises the following raw materials in parts by weight: 40-60 parts of matrix resin; 40 to 60 parts of matrix granules; 10 to 20 parts of natural fiber; 1-3 parts of functional resin; 0.1 to 0.3 part of a plasticizer; 5-7 parts of an impact modifier; 0.6-1 part of a heat stabilizer; 0.6-1 part of a weather-proof auxiliary agent; the matrix resin is one or more of PVC (polyvinyl chloride), PP (polypropylene) and PU (polyurethane); the matrix aggregates are any one or more of carbon black, molybdenum disulfide, nano silicon dioxide and ultra-high molecular weight polyethylene; the functional resin is any one or two of chlorinated polyvinyl chloride and high-density polyethylene; the carrier roller body prepared from the material has the characteristics of excellent wear resistance, impact resistance, inherent flame retardance, shock absorption and sound absorption.

This utility model relates to the field of tellurium ingot casting technology, and specifically discloses a tellurium ingot casting device, including a furnace, a chute, a casting sump, and a casting machine platform. The furnace includes a crucible, a cover plate, insulating bricks, a heating device, a thermocouple, a first outer shell, a support, a rotating shaft, a connecting shaft, a leak detection port, and a pressure cap. The furnace is mounted on the support and connected by the rotating shaft. The cover plate is connected to the first outer shell through the connecting shaft. The first outer shell is made of stainless steel. The leak detection port is located on the side of the furnace near the chute. The crucible is made of silicon carbide graphite and is fixed to the first outer shell by the pressure cap. The insulating bricks and the heating device are located between the crucible and the first outer shell. This utility model adopts a two-stage zoned temperature-controlled melting and impurity removal method from bottom to top. Impurities easily float to the surface and solidify, resulting in good stratification with the molten tellurium. The impurity removal effect is good, the operation is simple, and the tellurium yield is high. The entire operation process is controlled by PLC, with a high degree of automation, avoiding frequent contact between operators and the high-temperature molten material, and creating a friendly working environment.

The invention discloses a composite quartz saggar and a preparation method and application thereof, and belongs to the technical field of saggars, the thermal expansion coefficient of the saggar is smaller than or equal to 2.0 * 10 <-6 > / DEG C, the composite quartz saggar does not crack after water cooling at the temperature of 1100 DEG C, and the use temperature of the saggar is smaller than or equal to 1300 DEG C; the saggar takes first fused quartz and second fused quartz as aggregates; the particle size of the first fused quartz is 0.1-0.9 mm, and the particle size of the second fused quartz is 1-2 mm; the first fused quartz accounts for 18-40% of the sagger preparation raw materials; and the second fused quartz accounts for 18-40% of the sagger preparation raw materials. The sagger has the advantages of being small in thermal expansion coefficient, high in finished product size precision, free of deformation at the high temperature, good in water-cooling thermal shock resistance, good in chemical erosion resistance and the like, and can be applied to various alkali-free environments and high-temperature calcination environments with rapid heating and cooling.

The utility model provides separation equipment for a power battery, the separation equipment is used for cutting an adhesive structure between a module and a battery pack frame, the separation equipment comprises a cutting tool, a power supply device and a power supply device, the cutting tool is used for cutting into the adhesive structure, and the power supply device is used for supplying power to the power battery. The dust collection cover is in the shape of a semi-outer cover, the dust collection cover covers the cutting tool in the cutting process so as to collect cuttings generated in the cutting process, and a dust collection outlet is formed in the dust collection cover; the negative pressure dust collection assembly comprises a negative pressure fan and a first filtering device; the driving assembly is used for driving the cutting tool and the negative pressure fan, the dust collecting outlet is connected to an inlet of a first filtering device through a dust collecting pipe, and an outlet of the first filtering device is connected to an air inlet of the negative pressure fan through a dust collecting pipe. The separating equipment can suck away cuttings generated in the cutting process in time, and therefore a friendly working environment is provided.

The present application relates to a kind of tin ash vacuum carbothermic reduction recycling valuable metal method, belong to non-ferrous metallurgy technical field.The tin ash is mixed carbon powder according to metal amount and carbon ratio 2~4:1, under the condition of temperature 900~1200 ℃, pressure 1~20Pa, time 1~3h, vacuum carbothermic reduction-directional condensation is carried out, finally, crude tin I is obtained in evaporation zone;While the lead-zinc mixed steam entering gas phase is condensed to obtain crude lead I by lead liquid trap, and then refined zinc is obtained by zinc liquid trap;The crude tin I obtained is evaporated I by vacuum to obtain refined tin and crude lead II;The crude lead I obtained and the crude lead II obtained are evaporated II by vacuum to obtain crude tin II and refined lead, and crude tin II returns the process of evaporation I by vacuum.This method is simple, easy to operate, and the required equipment is simple, low in cost, high in universality of raw material, good in working environment, and process is safe and controllable.