12results about How to "High impurity removal rate" patented technology

The invention discloses an integrated double-drum spin-vibration screen applied to a grain processing production line, and belongs to the technical field of grain screening and impurity removal. According to the scheme, a cleaning mode of integrating a double-drum cleaning screen and a spin-vibration screen is adopted, the advantages that a drum screen is used for cleaning large impurities without blockage and the spin-vibration screen is used for grading and selecting are integrated, and a traditional drum screen is improved; the inner screen drum and the outer screen drum which are arranged in an inner-outer sleeving mode are arranged, the inner screen drum is used for screening large impurities, grains are filtered out through the discharging holes and conveyed downwards along the outer screen drum, the interior of the outer screen drum is divided into the multiple sorting spaces through the multiple material passing assemblies, the material passing assemblies are used for opening and closing the material passing openings, on one hand, the sorting time of each sorting space is prolonged, and on the other hand, the sorting efficiency is improved; the defect that a traditional drum screen is in a straight-through type and is too fast in screening is overcome, the impurity removal rate is improved, on the other hand, the double drum screens which are arranged in an inner-outer sleeving mode can conduct synchronous segmented independent sorting operation on impurities of various grades, and the double-drum screen is suitable for continuous processing of a grain processing production line.

The invention discloses a purification method and a purification device for crystallized magnesium, and relates to the field of magnesium metal smelting. The method comprises the following steps: under the protection of an inert atmosphere, firstly carrying out pressure-applying melting treatment on a magnesium material to be smelted, and then carrying out pressure-applying filtering treatment on a product obtained after the melting treatment, so as to complete the flux-free smelting process of the magnesium material. And meanwhile, the metal magnesium liquid and most of the oxide shells are separated by utilizing the liquidity difference between the liquid metal magnesium and the solid oxide shells. Compared with a conventional smelting process without pressure application, the method has the advantages that the melting rate of the crystallized magnesium can be remarkably increased, most of oxide impurities are removed, a series of pollution problems caused by flux use are solved from the source, and low-cost, high-efficiency and high-quality smelting of the crystallized magnesium is realized.

The production line comprises a crushing and grinding device, a liquid preparation system, an electrolysis system, a post-treatment system and a manganese residue treatment system, and the liquid preparation system comprises a slurrying barrel, a chemical combination barrel, a first filter press, a vulcanization pool, a second filter press, a purification tank, a third filter press and an elevated tank. The crushing and grinding device is communicated with the slurrying barrel, an outlet of the slurrying barrel is communicated with the chemical combination barrel, the chemical combination barrel is communicated with the first filter press, the first filter press is communicated with the vulcanization pool, the vulcanization pool is communicated with the second filter press, the second filter press is communicated with the purification tank, the purification tank is communicated with the third filter press, the third filter press is communicated with the head tank, and the head tank is communicated with the electrolysis system. The anolyte storage tank is respectively communicated with the slurrying barrel and the chemical combination barrel, and the first filter press, the second filter press and the third filter press are connected with a manganese slag treatment system. According to the production line, the leaching rate and the impurity removal rate can be increased, manganese slag recycling is achieved, and generation and emission of pollutants in the production process are reduced.

This invention relates to the field of raw material impurity removal in cellulose-to-ethanol production, and discloses a method for removing impurities from raw materials in cellulose-to-ethanol production. The method includes: (1) passing the cellulose raw material through a first sieve with a mesh size of 0.2-1 cm and then performing air separation; wherein the suction velocity of the air separation is 10-20 m / s; (2) separating the air-separated raw material by cyclone separation and then pulverizing it until the proportion of raw material with a particle size of 2 cm < ≤ 5 cm is not less than 60 wt%, wherein the conditions for cyclone separation include: the inlet velocity of the cyclone separator is 10-20 m / s, a filter screen with a mesh size of 0.2-0.4 cm is installed at the upper outlet of the cyclone separator, and the outlet velocity of the upper outlet is 2-3 m / s lower than the inlet velocity of the cyclone separator; (3) passing the pulverized raw material through a second sieve with a mesh size of 0.2-0.8 cm for impurity removal. The raw material impurity removal method of this invention has a high impurity removal rate, reduces equipment wear and processing difficulty in subsequent processes, and increases the raw material conversion rate in cellulose-to-ethanol production.

The utility model discloses a flow guide pipe of an electromagnetic stirring tundish, which comprises a pipe body, a steel flowing hole is arranged in the pipe body along the length direction of the pipe body, the inlet end of the steel flowing hole penetrates through one end part of the pipe body, a first steel tapping hole is arranged on the wall surface of one side of the pipe body, and a second steel tapping hole is arranged on the wall surface of the other side of the pipe body. A second steel tapping hole is formed in the side wall face, opposite to the first steel tapping hole, of the pipe body, the first steel tapping hole and the second steel tapping hole are both communicated with fluid of the steel flowing hole, and the height of the first steel tapping hole and the height of the second steel tapping hole are gradually increased from the inlet end to the outlet end. And the axis height of the steel flowing hole is gradually increased from the inlet end to the outlet end. By arranging the upwards inclined steel flowing hole, the upwards raised steel tapping hole and the angle matched with the specific size of the steel tapping hole, circulation of molten steel in the tundish can be enhanced, so that the size of a dead zone is reduced, and by arranging the pipe body, upward floating of steel slag during electromagnetic stirring is enhanced, the impurity removal rate is increased, and the quality of the molten steel is improved.

This invention discloses a combined teff cleaning system and a teff threshing and cleaning machine, including a frame and a vibrating screen assembly and an airflow cleaning device mounted on the frame. The vibrating screen assembly is used to remove long stalks and weeds after teff threshing. The seed discharge port of the vibrating screen assembly is connected to the airflow cleaning device. After being adsorbed by the airflow cleaning device, the seeds are discharged from the seed discharge port of the vibrating screen assembly, while the husks and small stalks in the seeds are discharged from the impurity discharge port of the airflow cleaning device. The combined cleaning system is configured to form a threshing and cleaning machine, including a feeding device, a threshing device, a combined cleaning system, a motor, and wheels mounted on the frame. The teff threshing and cleaning machine of this invention has a reasonable structure, is easy to operate, has a simple testing process, and is reliable in application, providing a solution for obtaining clean teff seeds.

The invention provides high-cleanliness monocrystalline silicon polished wafer cleaning equipment which comprises a working chamber, a plurality of cleaning pools are sequentially arranged in the working chamber, a plurality of swing forks are arranged on the side walls of the cleaning pools in the long edge direction, mounting seats are arranged on the swing forks, flower baskets are mounted on the mounting seats, and the flower baskets are used for bearing monocrystalline silicon polished wafers. A plurality of sets of jacking driving mechanisms are arranged in the cleaning pool located at the tail end, the jacking driving mechanisms are correspondingly installed between the installation base and the flower basket, the jacking driving mechanisms are arranged below the flower basket, and in the cleaning and drying process, the jacking driving mechanisms jack monocrystalline silicon polished wafers to be disengaged from the flower basket, so that the monocrystalline silicon polished wafers are cleaned and dried. The driving wheel rotates to drive the monocrystalline silicon polished wafer to rotate, supporting points of the monocrystalline silicon polished wafer are supported alternately, all-around cleaning and drying are completed, and the technological requirements are met.

The utility model discloses a guiding and shunting pipe of an electromagnetic stirring tundish, which comprises a first straight section and a second straight section which are connected with each other, the included angle between the first straight section and the second straight section is larger than 0 degree, a steel inlet hole is arranged in the first straight section, one end of the steel inlet hole penetrates through a steel inlet panel at the end part of the first straight section, and the other end of the steel inlet hole penetrates into the second straight section. A first steel tapping hole is formed in a second outer side wall panel of the second straight section, a second steel tapping hole is formed in a second inner side wall panel of the second straight section, and the liquid inlet end of the first steel tapping hole and the liquid inlet end of the second steel tapping hole are both in fluid communication with the steel inlet hole; and the first tapping hole and the second tapping hole are gradually raised from the liquid inlet end to the liquid outlet end. By designing the diversion pipe, the flowing and stirring effects of molten steel in the tundish can be enhanced, the dead zone volume can be reduced, the impurity removal rate can be improved, and steel slag is promoted to float upwards when passing through the diversion pipe, so that the quality of the molten steel in the tundish is improved.

The present invention relates to the field of robot grasping technology, and discloses a robot grasping point detection method, system, medium, device and program product. The robot grasping point detection method comprises: converting a depth image containing an object to be grasped into a cube voxel map; based on the cube voxel map, grasping point detection is performed through a grasping detection model; wherein the grasping detection model is a parallel branch neural network structure, including an autoencoder and a self-adjusting encoder; the autoencoder processes the cube voxel map to generate the width between the fingers of the gripper, the gripper posture and several grasping points; the self-adjusting encoder composed of several layers of three-dimensional convolution processes the cube voxel map to generate an adjustment factor, and the adjustment factor is used to perform local correlation adjustment on several grasping points and adjust the score of each grasping point. The gap between the predicted grasping point score and the actual grasping success rate is narrowed, and the safety and reliability of grasping are improved.

The invention relates to the technical field of flower processing treatment, in particular to photoelectric color sorting impurity removal and grading equipment for fresh jasmine flowers, and aims to efficiently and accurately realize impurity removal and quality grading of the fresh jasmine flowers in the early processing stage and meet the requirements of the flower industry for high quality and standardization of fresh jasmine flower raw materials. Fresh jasmine photoelectric color sorting impurity removal and grading equipment comprises main equipment, a feeding device and a display assembly are arranged on the top face of the main equipment, and a photoelectric detection system, an air injection impurity removal device, a grading device and a discharging device are arranged in the main equipment; advanced photoelectric detection and precise air injection impurity removal are combined, various impurities in the fresh jasmine flowers can be rapidly and accurately recognized and removed, the impurity removal rate reaches 95% or above, the impurity removal efficiency is improved by dozens of times compared with traditional manual impurity removal, and the purity of the fresh jasmine flower raw materials is greatly improved.

An adhesion type impurity removal device for cleaning oats comprises a shell, a feed hopper is installed on the top of the shell, a conveyor belt is arranged in the shell, a scraper plate is arranged above the conveyor belt, and the material is formed into an equal-thickness layer distribution on the conveyor belt through the bottom edge of the scraper plate in contact with the material; a layer of cotton material is attached to the surface of the conveyor belt, a plurality of rubber rollers are arranged above the conveyor belt, and a plurality of brush rollers are arranged below the conveyor belt, and the outer peripheral surface of the rubber roller is pressed on the upper surface of the conveyor belt, and the impurities in the material are adhered to the upper surface of the conveyor belt through the extrusion of the rubber roller and the cooperation of the cotton material, so that the oat grains in the material slide from one side of the conveyor belt along its conveying direction, and the impurities are transported to the lower surface of the conveyor belt, and the impurities fall off from the lower surface of the conveyor belt by cleaning the lower surface of the conveyor belt when the brush roller rotates, and the bottom surface of the shell is provided with a miscellaneous box and a grain collecting box, and the bottom surface of the shell is also provided with a motor for driving the pulley, the rubber roller and the brush roller to rotate synchronously.

This invention relates to the field of cellulosic ethanol preparation and discloses a method for preparing cellulose ethanol. The method includes: (1) first crushing the cellulose raw material, wherein the proportion of raw material with a particle size of 10-20 cm after the first crushing is not less than 40 wt%; (2) conveying the material after the first crushing to a sieve with a sieve aperture of 0.2-1 cm for the first sieve; (3) air classifying the material after the first sieve; (4) cyclone separating the air-classified raw material and then crushing it a second time until the proportion of raw material with a particle size of 2 cm < ≤ 5 cm is not less than 70 wt%; (5) washing and dehydrating the material after the second crushing and then mixing it with a catalyst; (6) dehydrating the mixture obtained in step (5) so that the dry matter concentration of the material is ≥ 30 wt%. The preparation method of this invention has a high impurity removal rate, reduces the equipment wear and processing difficulty of subsequent processes, and increases the conversion rate of cellulosic ethanol.