39results about How to "Reduce the difficulty of filtering" patented technology

The invention relates to a data processing method for detecting a lane line, and a storage medium. The method comprises the steps of acquiring sampling pixel coordinates in at least one lane line from an image according to a first preset rule, wherein the first preset rule is used for acquiring pixel coordinates in the y direction of the image; after the multiple sampling pixel coordinates are converted into points in a coordinate system of the unmanned vehicle, obtaining multiple sampling point data; filtering the plurality of sampling point data according to a second preset rule to obtain a target sampling point set, the second preset rule being used for filtering non-target sampling points on a lane line under a coordinate system of the unmanned vehicle; and performing curve fitting processing on the target sampling point set, if the curvature radius corresponding to a curve obtained by fitting processing is greater than a preset threshold value, outputting the lane line, otherwise, giving up output. According to the data processing method for detecting the lane line and the storage medium provided by the invention, high-quality lane line data can be provided for an automatic driving system.

The invention discloses a production process of a polyisophthaloyl metaphenylene diamine polymer. The production process comprises a diamine dissolution step, a normal-temperature polymerization reaction step, a coarse control neutralization reaction step and a fine control neutralization reaction step. According to the production process, the neutralization reaction can be better controlled and especially the finishing of the neutralization reaction can be controlled in such a way that a polymer is neutralized by respectively adding different neutralizing agents in two steps, more than 80% of neutralization reaction is completed in the first coarse control neutralization reaction step and the rest of neutralization reaction is completed by using diethylamine, so that the polymer with excellent neutralization quality is obtained, and the subsequent filtering and processing difficulties of a colloid are reduced.

The invention discloses a separation technology capable of solving the mineral derichment problem in a grinding and classification system. The technology is characterized in that a mineral feeding box is connected with a mineral feeding pump, the mineral feeding pump is connected with a hydrocyclone, an underflow outlet of the hydrocyclone is connected with a mineral feeding opening of a separation device, the hydrocyclone flows over to enter the next technology, a product outlet of the separation device is connected with a concentrate groove, a tailing discharging part is connected with concentration equipment which is connected with a grinding machine, and the grinding machine is connected with the mineral feeding box; and the technology comprises the steps that pulp is fed into the mineral feeding box, and then is conveyed into the next-stage technology through the overflowing product of the hydrocyclone, the underflow product of the hydrocyclone is fed into the separation device, qualified products of the separation device are concentrates, tailing pulp of the separating device is fed into the concentration equipment, and the underflow pulp of the concentration equipment is fed into the grinding machine to be ground. According to the separation technology, various problems caused by derichment of target minerals in the grinding and classification system are thoroughly solved, and the aims of improving the recycling rate and grade of the target minerals, improving the grinding machine treatment amount and reducing energy consumption of the grinding machine are achieved.

The invention relates to a method for producing liquid fig by utilizing ficin and is characterized in that fresh fig raw material is cleaned, minced and ground into slurry, water with the volume 3-5 times of the slurry is added to the slurry, and ficin is added to the slurry, the slurry is heated to the temperature of 45-52 DEG C in an ultrasonic reactor and is stirred under constant temperature for 1-3 hours, then the slurry is heated and deactivated enzyme, and the liquid fig is prepared by the techniques of homogenization, filling, capping and packaging. The liquid ficin provided by the method not only has remarkable medical health care effect, but also has good taste, is easy to be absorbed by a human body, retains the original nutrients and bioactivity of the fig completely, and needs no chemical additives, so that a new processing technology of fig and a new product are provided.

The invention discloses an esterification reaction tower for glyceryl triacetate production. The esterification reaction tower comprises a tower body, a reboiler, a gas distribution plate, a first condenser, a pervaporation membrane separator, a second condenser, a buffer tank, a reflux channel, a gear rack mechanism, a mesh cylinder and a gear motor. According to the invention, water generated bya reaction and a gas-phase azeotrope of a water-carrying agent are rapidly and efficiently dehydrated at the tower top, the removed water is intensively recycled in the buffer tank, and the recycledwater-carrying agent can be sent back to the tower as required and can also be discharged, so that the use is flexible; active carbon in a catalyst in a material can be directly intercepted in the mesh cylinder, so that the filtering difficulty of subsequent procedures is reduced; the mesh cylinder can reciprocate up and down in the tower and continuously rotate, so that the effect of stirring feed liquid is achieved, and the active carbon is dispersed so as to facilitate the reaction; and the feeding door of the mesh cylinder is matched with the reset spring, the upper pressing head and the lower pressing head, so that the functions of automatic feeding, cleaning and discharging can be achieved, and the esterification reaction tower has the advantages of being convenient to operate and maintain.

The invention relates to a multilevel wind power current transformation device without an AC/DC current sensor, and belongs to the technical field of power generation, power transformation or power distribution. The current transformation device is connected in series between a wind power generator set and a power grid. The current transformation device comprises a network side controller, an MPPT controller, a first current transformation unit, a second current transformation unit and a trap filter. The first current transformation unit, the second current transformation unit and the trap filter are connected in series in turn, and each unit in the current transformation device is controlled to realize feedforward control through each controller so as to realize grid connection power generation of the wind power generator set. According to the current transformation device, the harmonic component possibly brought into the power grid by the wind power generator set in grid connection can be reduced so that possible harm of the harmonic component to the power grid can be indirectly eliminated.

The invention relates to a filtering device, in particular to a coupling filtering device for waste lubricating oil. The device comprises a recycling box, a pretreatment box, a booster, a pressurizingrod, a pretreatment roller, a scraper, a sinking pipeline, a striking device, a treatment pipe, a motor base, a filter screen frame, a filter screen II and a device base; in operation process, wastelubricating oil is layered through precipitation, lubricating oil with different impurity contents is separately treated, and the filtering efficiency and the filtering quality are improved; relatively clean waste lubricating oil is pushed into the treatment pipe for further treatment by utilizing a push plate, so that the filtering difficulty of a filter screen I is reduced, and the service lifeof the filter screen I is prolonged while blockage is prevented; waste lubricating oil containing a large number of impurities and metal particles is stripped by combining a cylindrical electromagnetcapable of descending and rotating with the scraper, primary treated lubricating oil is obtained through treatment using the recycling box and the filter screen II and then is further treated, and itis beneficial for improvement of the filtering efficiency and the filtering quality.

The invention discloses an environment-friendly treatment method of a garbage penetrating fluid. The method comprises the following steps of: S1, reducing the water speed: after entering the UASB reactor, the garbage penetrating fluid impacts and drives a blocking mechanism, and the moving net of the blocking mechanism rises, so that the flow speed and the flow direction of ascending water flow are changed; the aeration mechanism is uniformly accelerated, so that the movement of a gas is accelerated, the moving difficulty of the gas is reduced, and meanwhile, the aeration pipe can be protected; moreover, the rotation of the aeration pipe can be facilitated, so that different positions in the denitrification reaction tank can be aerated; the phenomena of non-uniform aeration of a denitrification reaction tank and easy blockage of an aeration pipe in the prior art are solved, so that the garbage penetrating fluid in the denitrification reaction tank can be in full contact with the filler, the garbage penetrating fluid can be conveniently filtered, the aeration pipe can be protected, external dirt is prevented from entering the aeration pipe, and the cleaning frequency of the aerationpipe is reduced.

The invention relates to a complete set of new process for synthesizing D-calcium pantothenate. According to the invention, the method comprises the following steps: synthesizing beta-calcium aminopropionate from beta-aminopropionic acid and calcium oxide in water and/or methanol; after filtering, evaporating water and/or methanol in the beta-calcium aminopropionate solution to dryness under negative pressure; or after filtering, stirring and crystallizing for 8-40 hours at the temperature of 20-65 DEG C, filtering again, replacing mother liquor in a re-filtered filter cake with methanol for more than three times, enabling the moisture content in the filter cake to be less than 1%, removing 70% or more of solvent from filtrate, and applying the filtrate to a re-filtering step; soaking beta-calcium aminopropionate with methanol, adding a methanol solution of D-pantolactone, carrying out a reaction at a low temperature, carrying out a reflux reaction to synthesize D-calcium pantothenate,completely or partially evaporating methanol, adding water, dissolving, filtering, transferring into a spray dryer, and carrying out spray drying to obtain the product D-calcium pantothenate. The product quality meets the industrial standard, and the product yield is increased by 15%-20% compared with the existing process level.

The invention discloses a preparation method for an aramid fiber 1414 based composite material, belonging to the technical field of artificial fibers and composite materials. The preparation method provided by the invention uses poly-para-phenylene terephthalamide and paraphthaloyl chloride as raw materials, performs polymerization, spinning and post-treatment, and strictly controls condition parameters like temperature, viscosity, time, content, spinning speed and tension in the production process, so the production process for the aramid fiber 1414 based composite material is effectively guaranteed to be stably performed; meanwhile, the quality of a target composite material is improved; and the demands of a market are met.

The invention relates to a preparation method of a ginkgo tea beverage. The method comprises the following steps: firstly, cutting ginkgo leaves into small fragments, then mixing the fragments with asmall amount of water, carrying out steam stripping at a high temperature for a short time to remove ginkgoic acid and to reduce bitter and astringency, then mixing the ginkgo leaves with tea fragments, honeysuckles and dried lemon slices, adding water, conducting decocting, finally conducting filtration and deposition, filtration again, and conducting seasoning and sterilization, so that the ginkgo tea beverage which is sweet and sour in mouth feel, fragrant in smell and rich in nutrients can be obtained.

The invention discloses a production and preparation method for solid poly-aluminum chloride. The production and preparation method comprises the following steps of: (1), heating up 1.32-1.4 tons of hydrochloric acid with concentration of 20%-30% to 90 DEG C to 110 DEG C, adding 0.55-0.6 ton of bauxite for reacting for 1-2 hours under a constant temperature; (2), adding 0.3-0.4 ton of calcium aluminate powder for polymerizing to obtain a liquid poly-aluminum chloride solution; (3), adding fluorite which is 4-5 times silica gel by weight, and reacting for 15-30 minutes under the constant temperature; (4), filtering the reacted aluminum chloride solution by a filter press; and (5), drying the filtered aluminum chloride solution at a high temperature to obtain the solid poly-aluminum chloride. According to the preparation method disclosed by the invention, silicon fluoride with low viscosity is generated by the fluorite and the silica gel with high viscosity in the silica gel reaction solution in a polymerized aluminum chloride solution in a production process, so that the filtering difficulty is greatly reduced and the filter cloth can be recycled after being cleaned, thereby shortening the production time, reducing the production cost, improving the solid content of the liquid aluminum chloride and improving the market competitiveness of the products.

The efficient well lid dismantling device comprises a stand column, a rotating column is rotationally connected to the rotating middle of the bottom end of the stand column, five rotating plates are slidably connected to the middle of the bottom end of the outer surface of the rotating column at equal intervals, and an electric telescopic column is welded to the middle of the top end of each rotating plate; a pentagonal strip plate is welded to the top end of an electric telescopic column, a cutting, crushing and taking mechanism is installed in the middle of the inner wall of one rotating plate, a crushing rotating disc and an outer cutting disc can rotate conveniently through a crushing rotating motor in the cutting, crushing and taking mechanism, and the rotating difficulty of the outer cutting disc and an inner cutting disc is reduced; and meanwhile, through cooperation of an inner cutting disc, an outer cutting disc, a hydraulic rod, a threaded rod and a connecting piece, the asphalt pavement on the edge of the well lid can be conveniently cut, the cutting difficulty of the asphalt road side is lowered, the cutting difficulty of the edge of the asphalt pavement of the well lid in the prior art is lowered, and meanwhile the phenomenon that the cutting discs make contact with the well lid is prevented.

Disclosed is a method for joint recovery of pectin from citrus peels and alkaline/acidic processing water from citrus canning, including the following steps: adding fresh citrus fruit peels to alkali/acid processing water from citrus fruit canning for extracting; filtering the resulting mixture, adding to the resulting filtrate 95% ethanol 1 to 3 times the volume of the filtrate, and then adjusting the pH to a range of 3.5 to 7, followed by standing for 10 minutes to 4 hours; filtering the product after standing, washing the resulting precipitate with 50% to 70% ethanol, and drying and crushing, thereby obtaining pectin. The method makes full use of waste resources from citrus fruit canning, solves the problem of pollution by processing discharge water, and has the advantages of saving the preparation cost of pectin from citrus peels, and improving the solubility of recovered pectin.