77results about How to "Reduce external pollution" patented technology

The invention provides a method for determining impurity elements in high-purity aluminum through a microwave digestion-inductively coupled plasma emission spectrometer and belongs to the technical field of analysis and test. The invention provides an analysis method for determining 20 impurity elements including Ag, Ba, Bi, Cd, Co, Cu, Ga, Fe, In, Li, Mg, Mn, Mo, Pb, Sb, Ti, V, Sr, Zn and Zr in the high-purity aluminum through a microwave digester and an inductive coupled plasma optical emission spectrometer (ICP-OES) by adopting a standard curve method. A sample is dissolved into a sealed high-pressure microwave digestion tank by utilizing a proper amount acid, so as to avoid external factor pollution better. Optimal working parameters of an instrument are determined through a single-factor experiment. A standard curve-method test sample is selected so that matrix interference is reduced. The method is a simple, rapid and accurate modern detection technology capable of determining 20elements in one step.

The invention belongs to the field of furniture processing, and particularly relates to a novel odorless pain room. The novel odorless pain room comprises a room formed by enclosure of walls and a roof, an indoor floor located in the room body, an air supply device arranged outside the room body and a deodorizing and sewage draining device arranged in the room body. A roof net rack is arranged under the roof, fiber cotton is laid on the roof net rack, an air supply chamber is formed between the filter cotton and the roof, the air supply device comprises a suction fan case, a suction opening arranged in the suction fan case and an air supply pipe, the deodorizing and sewage draining device comprises a drain tank and a pain leaking net rack set up on the drain tank, and a sewage draining exit is arranged in the wall. Sprayed floating paint and air with paint odor are downwardly blown to the drain tank through filtered natural air blowing down from the roof downwardly so as to be absorbed by water and discharged out of the paint room via the sewage draining exit. A water tank is further arranged at the sewage draining exit, water overflowing from the water tank forms a water curtain to filter air passing through the sewage draining exit, and accordingly paint and paint odor in air discharged from the paint room to the sewage draining exit are removed.

The invention provides a river and lake ecological restoration system and relates to the technical field of river and lake water purification. The river and lake ecological restoration system providedby the invention comprises an upstream ecological purification floating island, a mid-stream aerated and medicated fountain, a downstream ecological purification floating island and an ecological pollution isolation fence, wherein the upstream ecological purification floating island is arranged on the upstream of a river or a lake, for the treatment of upstream river and lake water; the mid-stream aerated and medicated fountain is arranged on the bank of the river or the lake, for aeration and medication into mid-stream river and lake water; the downstream ecological purification floating island is arranged on the downstream of the river or the lake, for the treatment of downstream river and lake water; the ecological pollution isolation fence is arranged at a tributary entrance or a pollution discharging opening of the river or the lake for the interception of foreign pollutants. The river and lake ecological restoration system provided by the invention can more comprehensively treatthe upstream, the mid-stream and the downstream of the river or the lake and can simultaneously intercept the foreign pollutants to realize the systematic management of the river or the lake, therebybeing suitable for the large-area river or lake.

The invention belongs to the field of medical surgical instruments, and in particular to a medical surgical anesthetic coating device. For aiming at problems that existing equipment is not provided with a protection device, disinfection inconvenience, easy bacteria generation, the mounting or dismounting replacement is inconvenient; operation work intensity is high, use inconvenience, unreasonabledesign problem, the following scheme is provided nowadays. The device comprises a connecting box, the interior of the connecting box is of a cavity structure. A telescopic rod is installed in the connecting box, an inclined push rod is rotatably connected to the side wall of the telescopic rod, a rotating rod is rotatably connected to one end of the inclined push rod, a protective cover is rotatably connected to the lower end of the rotating rod, the upper end of the protective cover is hinged to the connecting box, and a supporting column is fixedly connected to the lower end of the telescopic rod. The device is provided with a protection device, is convenient to disinfect, is not easy to breed bacteria, is convenient to mount or dismount and replace, is low in operation working intensity, is convenient to use and is reasonable in design.

A preparing method of baked corn essence is disclosed. The method includes adding water into corn, pulping, adding amylase, hydrolyzing, heating and concentrating under vacuum, reacting by roasting at a high temperature, extracting with a Soxhlet extraction process, adsorbing with macroporous resin, and removing a solvent to obtain the baked corn essence. The baked corn essence is safe, sanitary, low in cost and high in product purity. Prominence is given to baked sweet or coked sweet aroma of cigarettes through evenly spraying the baked corn essence on cut tobacco through a cigarette aroma increasing process, thus improving smoking quality and the sense comfort level.

The invention belongs to the furniture processing field, and particularly relates to a novel tasteless oil paint house. An oil paint house structure of the novel tasteless oil paint house comprises a house body formed by a wall and a roof in surrounding mode, an indoor floor located in the house body, an air feed device located on the exterior of the house body and an odor removal and sewage draining device arranged in the house body, wherein a top net rack is arranged below the roof, filtration cotton is laid on the top net rack, an air feed cavity is formed between the filtration cotton and the roof, the air feed device comprises a plurality of air draft cases, and air draft mouths and air feed pipes, which are arranged on the air draft cases, the odor removal and sewage draining device comprises a water draining pond and an exposed undercoat net rack erected on the water draining pond, and a sewage outlet is formed in the wall body. According to the oil paint house structure, natural wind which blows downwards from the roof blows oil paint which is sprayed and floats and air with a paint smell downwards to the water draining pond, the oil paint which is sprayed and floats and the air with the paint smell are absorbed by water, and then are discharged out of the tasteless oil paint house through the sewage outlet, a water tank is further arranged on the sewage outlet, water which overflows from the water tank forms a water curtain, air which passes through the sewage outlet is filtered by the water curtain, and therefore the oil paint and the paint smell in the air which is exhausted from the sewage outlet are removed.

The invention provides an alkali metal impurity pretreatment apparatus which comprises a distillation unit, an operation box, a cooling unit and a vacuumizing unit. The distillation unit is used for distilling alkali metal containing an impurity so as to separate the impurity from the alkali metal; the operation box is used for accommodating the distillation unit and providing a proper operation environment for the distillation unit; the cooling unit is used for providing a cold source for the distillation unit, so that the alkali metal is converted into a liquid state or a solid state from agas state; and the vacuumizing unit is in fluid communication with an inner cavity of the distillation unit so as to provide a required atmosphere environment for the operation box. According to the alkali metal impurity pretreatment apparatus, a heat source is provided for evaporation of alkali metal through the distillation unit, a cold source is provided for condensation of gaseous alkali metalthrough the cooling unit, a safe and reliable external environment is provided for the whole distillation process and the subsequent treatment process of the alkali metal through the operation box, the risk that the alkali metal is polluted in the distillation process is greatly reduced, and the impurity analysis accuracy is improved.

The present invention relates to the technical field of new energy automobile accessories, in particular to a charging pile for new energy automobiles, which includes a charging pile main body, a display screen, a charging gun and a cable main body. The surface is provided with a retracting mechanism 1 and a retracting mechanism 2, and the two are distributed correspondingly up and down. A pneumatic component is arranged between the retracting mechanism 1 and the retracting mechanism 2, and charging guns are respectively installed on both sides of the main body of the charging pile. By adding retraction mechanism 1 and retraction mechanism 2 to the device, the cable body connected to the charging gun and the charging pile body can be retracted, shielded and protected, avoiding the disorderly arrangement of cables, and further reducing the impact on Cars or car owners who often charge may cause injury risks, such as the probability of tripping or electric shock accidents. The car charging pile has a simple structure and is easy to use, which can greatly improve the cleanliness of the charging operation area, while further avoiding risks and improving the charging operation. security.

The invention discloses cefixime dispersible tablets. 1000 cefixime dispersible tablets are prepared from the following raw materials in parts by weight: 40-70 g of cefixime, 5-20 g of pregelatinized starch, 5-20 g of lactose, 5-10 g of low-substituted hydroxypropyl cellulose, 1-5 g of lubricant and a proper amount of polyvinylpyrrolidone. The invention also provides a preparation method of the cefixime dispersible tablets. According to the preparation method, granulation is performed by using a one-step granulation method; the three steps of mixing, granulation and drying of the conventional wet granulation are finished in a closed container at one time; according to the process, the problems that the solvent is remained and discolored in the wet granulation process and the pharmaceutical ingredients are heated to be lost in the drying process are avoided, and the problems such as serious dust flying and high probability of cross contamination during tabletting in the dry granulation process are also avoided.

The invention discloses high-precision rubber and plastic equipment technology equipment. The high-precision rubber and plastic equipment technology equipment comprises a floater, an impurity removalbox arranged on the top of the floater, and an impurity removal barrel arranged at the bottom of the floater. An up-down expanding through hole is formed in the floater. The impurity removal box is internally provided with a discharging cavity with a downward port, wherein the discharging cavity communicates with the through hole, the diameter of the discharging cavity is larger than that of the through hole, and a dirt throwing barrel is connected in the discharging cavity in a rotation fit manner. Water steaming equipment is arranged on the inner wall of the left end of the discharging cavity, air suction equipment is arranged on the inner wall of the right end of the discharging cavity, and storage cavities with upward ports are formed in the inner wall of the bottom of the dischargingcavity, wherein the storage cavities are located in the two ends of the through hole and are symmetric. The high-precision rubber and plastic equipment technology equipment is simple in structure andconvenient to operate, move and carry; and meanwhile the pollutant adsorption efficiency and effect are improved.

The invention discloses a production process of magnesium chloride granules. The production process comprises the following steps of: crushing crystallized magnesium chloride, then, placing the crushed magnesium chloride into a dissolving tank, stirring the crushed magnesium chloride, then, standing for settlement, inspecting the baume degree of the liquid not to be lower than 33.5Be', and primarily filtering the liquid in the dissolving tank to obtain primary filtrate magnesium chloride; naturally settling the primary filtrate magnesium chloride for at least three days, then, sequentially placing the primary filtrate magnesium chloride into a two-effect separator and a one-effect separator to carry out steam-liquid separation to obtain liquid magnesium chloride; and delivering the liquid magnesium chloride to a dust-free pelleting chamber through a pipeline to pellet to obtain finished products of the magnesium chloride granules. The method is advanced in process design, strong in operability, controllable in process parameter and capable of realizing large-scale industrial production; the prepared product is high in purity and capable of meeting the requirement of a high-quality product; the magnesium chloride granules are high in dissolving speed and clear, transparent and free of impurities after being dissolved; and an automatic production line is adopted, and the product is high in stacking density and not easy to air slake.

The invention belongs to the field of furniture processing, and particularly relates to a novel odorless pain room. The novel odorless pain room comprises a room formed by enclosure of walls and a roof, an indoor floor located in the room body, an air supply device arranged outside the room body and a deodorizing and sewage draining device arranged in the room body. A roof net rack is arranged under the roof, fiber cotton is laid on the roof net rack, an air supply chamber is formed between the filter cotton and the roof, the air supply device comprises a suction fan case, a suction opening arranged in the suction fan case and an air supply pipe, the deodorizing and sewage draining device comprises a drain tank and a pain leaking net rack set up on the drain tank, and a sewage draining exit is arranged in the wall. Sprayed floating paint and air with paint odor are downwardly blown to the drain tank through filtered natural air blowing down from the roof downwardly so as to be absorbed by water and discharged out of the paint room via the sewage draining exit. A water tank is further arranged at the sewage draining exit, water overflowing from the water tank forms a water curtain to filter air passing through the sewage draining exit, and accordingly paint and paint odor in air discharged from the paint room to the sewage draining exit are removed.