409 results about "Large particle" patented technology

The invention relates to the field of multiphase numerical simulation, and discloses a large-scale particle flow numerical calculation method based on multi-ball filling, and the method comprises the steps: obtaining a fluid domain grid size, a fluid density and a large particle radius; calculating the radius of the small filling ball according to the size of the fluid domain grid; based on golden angle spiral distribution and minimum distance coverage judgment, determining the number and the positions of small filling balls, and generating a large particle model of multi-ball filling; obtaining the background flow field speed of the large particles and the filling small balls in the current time step, and calculating the background flow field speed and drag force of the large particles; updating through iterative calculation to obtain the speed and the position of the large particles and the small filling balls in the next time step; and adding drag force as a source item into a momentum equation to solve fluid motion, and obtaining a fluid computational domain grid speed in the next time step. Accurate numerical simulation of large-scale particles is realized.

The invention provides a rapid detection method for water pollutants, which comprises the following steps: removing large-particle impurities and suspended solids in a water sample to be detected to obtain a target water sample; the method comprises the following steps: synchronously detecting multiple pollutant indexes of a target water sample through a multi-source sensor array to generate an initial detection data set; performing noise filtering and baseline correction on the initial detection data set to generate a target detection data set; performing space-time dimension dynamic fusion and feature decoupling on the target detection data set to generate water quality pollutant data and dynamic risk assessment indexes; and constructing a multi-dimensional risk assessment report by adopting the water quality pollutant data and the dynamic risk assessment indexes. By adopting a dynamic gradient filtering technology, impurity interference is effectively removed, dynamic risk assessment of a time dimension is realized, the accuracy and reliability of detection in a complex water quality environment are remarkably improved, and rapid and accurate water quality pollutant detection and risk assessment are realized.

The invention relates to the technical field of jet milling, in particular to a jet milling control method for a fluidized bed jet mill. The method comprises the following steps: acquiring the scattered particle weight increment of large particles and the fine weight increment of fine particles between adjacent sampling moments; dividing into an initial increasing stage and a uniform increasing stage according to the numerical value change of the weight increment of the scattered particles at the maximum value position; in the initial increasing stage, the retention degree is determined according to the trend change of the small weight increment; the drag force degree is determined according to the numerical comparison of the fine weight increment and the granular weight increment in the initial increasing stage and the uniform increasing stage; and determining an adjustment coefficient of the jet milling pressure by combining the retention degree and the drag force degree at the current moment, and regulating and controlling the jet milling pressure at the current moment according to the adjustment coefficient. The airflow crushing pressure can be adjusted and controlled more objectively and reasonably, and the airflow crushing efficiency is effectively improved.

The invention provides an optimization method of a magnesium slag sensible heat recovery system, which comprises the following steps: acquiring particle size distribution data of magnesium slag particles, and judging whether the problem of non-uniform particle size distribution exists or not according to a preset particle size threshold value; aiming at the problem of non-uniform particle size distribution, magnesium slag particles are classified by adopting a clustering algorithm, and the distribution areas of large particles and small particles are determined; according to the distribution area of the large particles, the rotating speed of the cooling roller is dynamically adjusted, and the accumulation probability of the large particles in the roller is reduced; the temperature change trend of the inner wall of the cooling roller is monitored in real time, and if it is detected that the local temperature abnormally rises, it is judged that local hot spots exist; when a local hot spot is detected, a spraying cooling system in the roller is started, and intensified cooling is conducted on a local area; pressure and temperature data of high-pressure and high-temperature water are collected in real time through a pressure sensor and a temperature sensor, and whether fluctuation exists or not is judged.

The utility model discloses a device for sorting copper and aluminum particles after crushing of waste lithium batteries, which is provided with a vibrating screen (1), and a material inlet at the upper part of the vibrating screen (1) receives materials generated by a crusher; the sorting device is also provided with a large particle sorting machine (4) and a small particle sorting machine (6); and a large particle outlet and a small particle outlet of the vibrating screen (1) are respectively connected with the large particle sorting machine (4) and the small particle sorting machine (6) through the conveying pipeline (3). By the adoption of the technical scheme, the copper-aluminum mixture generated in the waste lithium battery crushing and sorting process can be efficiently sorted, high-purity copper particles and aluminum particles are obtained, and recycling of waste materials is achieved; the process is reasonable and feasible, equipment is simple, and recovery cost is low.

The invention relates to the field of debris flow disaster prevention and control, in particular to a method for predicting the flow of large-particle blocking and collapsing debris flow at the sudden shrinkage position of a channel, which comprises the following steps: determining the stress state information of large-particle materials according to the movement process of the large-particle materials in the channel along with debris flow; according to the stress state information and the stress balance condition, a flow prediction model of the large-particle blocking and collapsing debris flow at the channel sudden shrinkage position is constructed; building an experimental device, and placing a simulated large-particle material in the experimental device; obtaining debris flow characteristic parameters and large particle material motion characteristic parameters through an experimental device; and measuring the real channel to obtain a large particle material form parameter and a channel form parameter, so as to obtain the flow of the large particle blocking and collapsing debris flow at the channel sudden shrinkage part of the real channel. The experiment device is built to simulate the debris flow process for multiple times to obtain corresponding parameters, the debris flow is calculated in combination with the debris flow prediction model, and the debris flow prediction reliability is improved.

The application provides a low-crystallinity hydroxyapatite microsphere for implantation and a preparation method thereof, and the preparation method comprises the following steps: preparing a mixed solution of a calcium source reagent and a phosphorus source reagent, adding inorganic acid, alkali and a buffer into the mixed solution, adding a surfactant, and obtaining a hydroxyapatite micro-particle precipitate through constant-temperature reaction; cleaning the hydroxyapatite micro-particle precipitate, and preparing a hydroxyapatite micro-particle suspension by adding water; and performing spray drying on the hydroxyapatite micro-particle suspension to obtain the hydroxyapatite microsphere; wherein the surfactant is one or more of PEG and PVP. The hydroxyapatite microsphere obtained by the application has stable structure, belongs to spherical large particles, is easy to inject, and is not prone to agglomeration; when the hydroxyapatite microsphere is injected into a human body, the hydroxyapatite microsphere has good supporting effect; and the preparation method of the application is simple, has few process steps, and is easy to realize reaction conditions, and is suitable for large-scale production.

An inlet for an analytical instrument comprises a transfer tube having an upstream end and a downstream end and a deposition region arranged at or adjacent to the upstream end of the transfer tube. The transfer tube is configured to transfer ions together with a gas flow from the upstream end to the downstream end. The transfer tube and the deposition region are configured such that the gas flow experiences at least one turn in the deposition region, whereupon relatively large particles entrained in the gas flow are deposited in the deposition region. The at least one turn in the gas flow is created by: a change in cross-sectional area of the gas flow in the deposition region, a change in diameter of the gas flow in the deposition region, and / or a change in cross-sectional shape of the gas flow in the deposition region.

The invention discloses a mineral substance feeding device. The mineral substance feeding device comprises a shell, a large particle separation bin, a medium particle separation bin, a small particle separation bin, a vibration separation mechanism and a material lifting and moving mechanism. The vibration separation mechanism comprises a vibration separation bracket, a material guide basin, a large particle separation sieve plate, a medium particle separation sieve plate and a vibration rotating mechanism; the vibration rotating mechanism drives the material guide basin, the large particle separation sieve plate and the medium particle separation sieve plate to vibrate and rotate; the large-particle separation sieve plate is used for separating large-particle mineral substances and throwing the large-particle mineral substances into the large-particle separation bin through rotary centrifugation, and the medium-particle separation sieve plate is used for separating medium-particle mineral substances and throwing the medium-particle mineral substances into the medium-particle separation bin through rotary centrifugation; the medium-particle separation sieve plate is used for guiding small-particle minerals into the small-particle separation bin; precise separation of particle minerals of different sizes is achieved, manual feeding is not needed, and it is ensured that nutritional ingredients in chicken feed are evenly distributed.

The invention belongs to the technical field of solid waste resource utilization and inorganic material synthesis, and relates to a method for reducing the water content and particle size of active calcium silicate. According to the method, powdery quicklime or ground carbide slag is used as a calcium source, the reaction activity of the calcium source is improved through steam activation, then the calcium source is added into desiliconization liquid containing sodium silicate in batches, a reaction is carried out under the temperature control and stirring conditions, and finally, hot water ultrasonic washing and drying are carried out, so that an active calcium silicate product with low water content and fine particle size is prepared. According to the process, the problems of high water content, large particle size, impurity residues and the like in the traditional process are effectively solved by accurately controlling the Ca / Si molar ratio, temperature sectional reaction and ultrasonic-assisted washing. According to the method, the post-treatment burden of the product is remarkably reduced, the whiteness and the purity are improved, high-value utilization of high-calcium solid wastes such as the carbide slag is also realized, and the method has good industrial popularization prospects and environmental benefits.

The pulverizer in the ultrafine pulverizing device provided by this invention includes a vertical shaft that is rotatably arranged in the vertical direction and extends out of the housing of the ultrafine pulverizing device, multiple pulverizing mechanisms connected to the vertical shaft, and a first driving member for driving the vertical shaft to rotate. By arranging the multiple pulverizing mechanisms vertically along the vertical shaft, each pulverizing mechanism includes a cutter disc on the vertical shaft, multiple pulverizing blades on the cutter disc, and a toothed ring sleeved on the outer circumference of the cutter disc. A pulverizing gap is formed between the pulverizing blades and the toothed ring, and the toothed ring is fixed to the housing. The outer diameter of the toothed ring of the lower pulverizing mechanism is larger than that of the upper pulverizing mechanism, and the pulverizing gap of the lower pulverizing mechanism is larger than that of the upper pulverizing mechanism. After screening out materials with larger particles, the screened materials can be pulverized again using multiple pulverizing mechanisms to improve the fineness and pulverizing efficiency of the materials.

The anti-blocking mixer comprises a pipeline, first flange plates are fixedly connected to the left side and the right side of the pipeline, a feeding hole is formed in the outer side of the pipeline, a first feeding pipe is arranged in the feeding hole, a smashing structure is arranged at the upper end of the first feeding pipe, and a second flange plate is arranged at the lower end of the smashing structure. A first feeding pipe is fixedly connected to the outer side of the crushing structure, a second feeding pipe is fixedly connected to the outer side of the crushing structure, a second flange plate is fixedly connected to the outer side of the second feeding pipe, a mixing unit structure is arranged in the pipeline, the crushing structure comprises a hollow block, and the hollow block is fixedly connected to the upper end of the first feeding pipe. Through the arrangement of the crushing structure and the mixing unit structure, large particles in materials can be conveniently crushed before the material solution is mixed, the situation that the large material particles are condensed into a block and attached to the interior of a pipeline to block the pipeline is avoided, the workload of workers for frequently cleaning the pipeline is reduced, time and labor are saved, and convenience and rapidness are achieved.

The utility model discloses a calcium hydroxide particle size accurate regulation and control device which comprises a workbench and a particle size regulation and control assembly used for accurately regulating and controlling the particle size of calcium hydroxide particles, a collecting hole is formed in one end of the upper surface of the workbench, and a fixing cylinder is fixedly installed at one end of the edge of the upper surface of the collecting hole. The particle size regulation and control assembly is detachably installed on one side of the fixing cylinder, an installation rod is fixedly installed at the other end of the upper surface of the workbench, an empty groove is formed in one side of the workbench, a vibration motor is arranged in the empty groove, and a linkage cylinder is fixedly installed at one end of the outer surface of the fixing cylinder. The whole structure has high regulation and control capacity on calcium hydroxide particles, accurate regulation and control can be carried out, the condition of mixing caused by large particle size span is avoided, particle size distribution is uniform, and application scenes with high particle size uniformity requirements can be effectively met.

The utility model discloses a millstone for a grain moisture test crushing mill in the field of crushing equipment, which comprises a static millstone and a movable millstone, a plurality of gear rings which are of concentric circle structures and can be meshed with each other are respectively arranged on the opposite surfaces of the static millstone and the movable millstone, and a plurality of large gear rings close to the inside are wider and higher than a plurality of small gear rings close to the outside. And a plurality of material guide grooves which penetrate through all the gear rings and divide the gear rings into a plurality of gear blocks are further formed in the opposite surfaces of the static grinding disc and the movable grinding disc. The gear rings and the material guide grooves are arranged on the static grinding disc and the movable grinding disc, materials move outwards along the material guide grooves and gaps among the teeth in the grinding process and are ground by the tooth blocks when passing through the connecting portions of the adjacent gear rings, meanwhile, due to the fact that the gaps of the large gear rings on the inner side are large, large particles are crushed firstly, the gaps of the small gear rings on the outer side are small, and then the particles are ground into powder, and the grinding efficiency is greatly improved. And the powder fineness is ensured, the high powder discharging efficiency is achieved, the problem that the temperature rise is too large due to too fast grinding can be avoided, and the moisture loss in the grinding process is reduced.

The utility model belongs to the field of packing material processing devices, and particularly relates to a packing material processing device for mine construction, which comprises a device main body, the upper surface of the device main body is fixedly connected with a material distributing device, the material distributing device comprises a cover plate, the cover plate is arranged on the upper surface of the device main body, and the material distributing device is arranged on the cover plate. A conical spiral groove is formed in the inner wall of a feeding port of the cover plate, a dustproof cover is fixedly connected to the upper surface of the feeding port of the cover plate, and the bottom face of the dustproof cover is fixedly connected with one end of a connecting rod. According to the packing material treatment device for mine construction, materials fall into the areas of the material distribution rings in a relatively uniform state, and then the materials are further subdivided by the material distribution rings with different sizes in sequence, so that coal cinder particles are in a concentric circle shape and are discharged on the upper surface of a main material, and when the material distribution rings are impacted by relatively large particles or non-uniform materials, the coal cinder particles are separated from the main material. And the spring can make the material distributing ring vibrate rapidly through the elasticity of the spring, and the material distributing speed of the device is increased.

The utility model provides a beater for artificial graphite micro powder, which structurally comprises a mounting shell, a depolymerization cavity is fixedly arranged in the middle of the mounting shell, and a depolymerization disc is movably connected to the bottom of the mounting shell; a plurality of supporting rods are movably connected to the top of the mounting disc, and slapping teeth are movably connected to the tops of the supporting rods; an electric push rod is fixedly arranged in the middle of the support, guide sleeves and slapping teeth are fixedly arranged at the left end and the right end of the support, when large-particle materials appear on the depolymerization cavity, the large-particle materials make contact with the slapping teeth to achieve slapping crushing treatment, and the crushed materials are depolymerized by a depolymerization disc in the depolymerization cavity; the depolymerization treatment efficiency of large-particle materials is improved, and when conventional micro-powder materials are subjected to depolymerization treatment, the slapping teeth can be lowered and stored in the adjusting holes of the depolymerization disc.

The invention discloses a coal density distribution and particle size distribution measuring system and method, and relates to the field of coal washing, and the system comprises a computer, an X-ray source, a detector, a rack, a rotating platform, a guide rail, a sample barrel and a coal sample screening device; a coal sample is contained in the sample barrel; the coal sample screening device is used for screening coal samples into large-particle coal samples and small-particle coal samples; the guide rail drives the rotating platform to move in the horizontal direction, the rotating platform drives the sample barrel to rotate, an X-ray beam emitted by the X-ray source irradiates in the horizontal direction, penetrates through the cross section of the sample barrel and reaches the detector, the detector sends collected coal sample X-rays and position information of the rotating platform to the computer for image reconstruction, and a coal sample CT image is obtained; and the computer is also used for calculating density distribution and particle size distribution of the coal sample according to the coal sample CT image. According to the invention, the accuracy and speed of density distribution and particle size distribution measurement can be improved.

Disclosed herein is a positive electrode active material with a combination of large and small particles, including large-particle secondary spheres and small-particle secondary spheres, where the mass ratio of the large-particle secondary spheres is not smaller than 50%; the D50 particle size of the large-particle secondary spheres is 10-20 μm, and the D50 particle size of the small-particle secondary spheres is 2-5 μm. The doping elements and nickel contents of large and small particles are strictly regulated to ultimately obtain a positive electrode material with good comprehensive performance in terms of capacity, cycling, and DCR. Also disclosed herein is a preparation method for the positive electrode active material with a combination of large and small particles.

The utility model belongs to the technical field of water-based release agent production, particularly relates to a water-based release agent production and preparation device, and provides the following scheme aiming at the problems that the production efficiency is reduced due to the fact that the emulsification time is prolonged due to existing large-particle substances, and materials or emulsifiers are wasted due to the fact that the large-particle substances are filtered. Comprising an emulsifying tank and a supporting frame, the emulsifying tank is arranged on the supporting frame in a penetrating mode, a heating wire for generating heat is arranged in the emulsifying tank, in the emulsifying device, due to the arrangement of a grinding assembly, materials can be ground immediately after entering the emulsifying tank, the refining degree and the emulsifying effect of the materials are effectively improved, and the emulsifying effect of the materials is improved. And meanwhile, the first fixing assembly and the second fixing assembly stably fix the movable grinding disc and the static grinding disc correspondingly, the stability of the grinding process is guaranteed, the weighing assembly guarantees the matching precision of materials, and the stability and performance of the product are improved.

Disclosed is a shear stable latex comprising functionalized fluoropolymer, a particle size modifier and a surfactant; said latex having solids content of at least 15 wt %, where the ratio of particle size modifier to surfactant is equal to or greater than 2 on a molar to molar basis.

The invention belongs to the field of conductive slurry, and particularly discloses a method for detecting the dispersity of slurry particles. The detection method comprises the following steps: centrifuging slurry, sampling from the bottom of the slurry, and forming a film on the obtained sample to obtain a test sample film; spraying metal on the surface of the test sample film, and observing the particle size and the number of large particles in the test sample film by adopting a scanning electron microscope; the centrifugation is as follows: the slurry is centrifuged for 3-12 times by adopting a centrifugal force of 500-3000g, and each time is centrifuged for 10s-7min. The large particles are actively enriched to the bottom of the slurry through centrifugation, and then are directly sampled and observed from the bottom, so that the large particles are more easily captured and analyzed. According to the method, the problems that in a traditional method, due to the fact that large particles naturally sink to the bottom in the drying film forming process and are difficult to be effectively observed by an electron microscope, size misjudgment and number missing detection are caused are fundamentally avoided, and therefore more accurate statistics and characterization of the large particles in the slurry are achieved.

The invention relates to a classifier based on airflow separation, comprising: a casing comprising a fixed cylinder, and a conical shell cavity and an ash bucket connected to the upper and lower sides of the fixed cylinder; an external air source is obliquely blown into the conical shell cavity in the tangential direction of an air outlet of the tangential air supplement volute; corresponding conical caps are fixedly mounted at the top of the fine powder discharging pipe at intervals; the ventilating and flow guiding conical shell is matched with the fine powder discharging pipe through a mounting hole of the ventilating and flow guiding conical shell so as to be mounted on the inner side of the tangent air supplementing volute; the ventilation flow guide conical shell is hollow and is provided with a corresponding inflation cavity, and the grading reinforcing mechanism comprises a plurality of micron air holes which are uniformly distributed in the conical surface of the ventilation flow guide conical shell. According to the device, the contact rate and the contact uniformity of materials and airflow can be effectively improved, and the entrainment amount of materials with small particle sizes when the materials with large particle sizes pass through an airflow washing area can be effectively reduced.

The application discloses a large-particle foreign matter detecting and removing device for polyester paint for household appliance coil coating, belongs to the technical field of detecting and removing devices, and through the setting of a receiving bin, large-particle foreign matter powder left after screening can be taken, a grinding disc of a grinding assembly is driven by a driving mechanism to realize grinding work on the large-particle powder, the grinding disc and the grinding seat can be used to realize the adjustment of the spacing between the grinding disc and the grinding seat under the action of a connecting mechanism and a guide assembly, so that the large-particle powder can be ground to a qualified size, and through the setting of the function in combination with active discharging work, the grinding work on the large-particle powder can be realized in the screening process, the process of taking out the screened large-particle powder, the process of transferring the large-particle powder to the grinding device for secondary processing and the time required for secondary processing and grinding can be directly saved, and the efficiency is effectively improved.

The invention provides a tungsten polymetallic tailing recovery method and system, and the method comprises the following steps: carrying out crushing and first mineral separation to realize first enrichment so as to obtain a first fraction mineral; second screening is carried out on the first-size-fraction minerals, second mineral separation is carried out on the fifth-size-fraction minerals with the large particle size obtained through second screening, second enrichment is carried out according to the density, and second concentrate is obtained; small-particle-size fourth-particle-size minerals obtained through second screening and the second concentrate are graded according to a preset particle size grading rule, multi-stage jigging ore separation is carried out, third enrichment is carried out according to the density, and third concentrate is obtained; and after multiple times of enrichment, the third concentrate is ground and subjected to mineral separation, and target concentrate is obtained. Through multi-stage crushing, dense medium ore dressing according to density and multi-stage jigging ore dressing, multiple enrichment is carried out, the ore dressing efficiency is effectively improved, the ore grinding amount of grinding is reduced, the grinding cost is reduced, and the production cost is reduced.

The invention discloses an absorption tower capable of preventing crushed aggregates from entering a circulating pump groove, and relates to the field of absorption towers, the absorption tower comprises a tower and a filter part, the filter part is in a cylindrical shape with inner diameter difference between two ends, and the filter part is erected in the tower from top to bottom in a manner of becoming thin from thick; and a convex bottom is arranged at the part, connected with the bottom end of the filter piece, of the tower. According to the absorption tower capable of preventing the crushed aggregates from entering the circulating pump groove, the filter piece is arranged, the filter piece is in a barrel shape with the inner diameter difference between the two ends, and the filter piece is erected in the tower from thick to thin from top to bottom, so that compared with a filter screen which is directly erected, the filter piece with a slope surface structure can well bear direct impact of large particles above the filter piece, and the filter piece can be prevented from entering the circulating pump groove; meanwhile, the slope surface structure is beneficial to guiding particles to slide down along the slope surface, so that local accumulation of the filter surface is effectively avoided, and stable flow section and flow velocity are maintained; and a convex bottom is erected between the inner bottom of the tower and the filter element, so that the circulating liquid naturally flows towards the two sides of the convex bottom in the operation process of the absorption tower, and an accelerated discharge effect is formed.

The invention discloses a method for reducing flying dust in ceramic digital glue dry particle production, dust emission reduction and product performance improvement are realized through a multi-dimensional cooperative control technology, the core is to establish a particle size distribution-fluidity-flying dust suppression linkage control system, and a gradient dust removal system is synchronously developed. A high-frequency mechanical vibration device is arranged at the front section to remove large particles, a high-voltage electrostatic dust collection module is arranged at the middle section to capture suspended dust, a nanofiber membrane is adopted at the tail end for filtration, according to actual measurement, after transformation, the PM10 concentration of a production line is reduced to 3 mg / m < 3 > from 25 mg / m < 3 >, the equipment failure interval is prolonged to 1200 hours, the natural transition performance of dry particles is remarkably improved, the product superior rate is improved, and the production cost is reduced. In order to greatly reduce raised dust in the production process, the technology provides a solution for the generation of a large amount of dust in the production of ceramic digital dry granules.

The application discloses a kind of low-temperature in-situ synthesis nanoparticle reinforced aluminum matrix composite preparation method, with the following characteristics: (1) the calculation method of the application is used, the initial melting amount of alloy and the size of crucible are reasonably selected, and the depth of molten salt layer in the reaction process is controlled to be not more than 3 cm;(2) Al-Si eutectic alloy is used as the base melt, mixed salt is added at 600 DEG C, and the melt temperature during the whole reaction process is not more than 650 DEG C;(3) vacuum purification treatment, heating and adding alloy elements are carried out in sequence after the reaction is completed.The application uses reasonable crucible diameter and very low reaction temperature, effectively reduces the reaction speed and inhibits the growth speed of reaction products, solves the problem of large particle size distribution range and multiple by-products of traditional in-situ synthesis method. By strictly controlling the depth of metal melt and molten salt, the alloy-molten salt reaction interface is increased, the reaction product is more easily dispersed, the residual molten salt in the melt is significantly reduced, and the difficulty of melt purification is reduced.

The application discloses a multi-stage gradient anti-silt underwater equipment, which comprises a static part and a rotating part rotating relative to each other. Outside the core support gap, a flow guiding and sand throwing part and an expansion and sedimentation part are arranged in sequence from upstream to downstream along the water flow direction. The flow guiding and sand throwing part is an annular step arranged on the static part, which utilizes water flow inertia separation to throw large particle silt out of the side; the expansion and sedimentation part is an annular groove arranged on the inner hole wall of the static part, which utilizes the low-speed vortex area formed by the sudden change of the flow passage section to make fine sand particles settle and be intercepted in the groove; the two parts are cooperated with each other, and the different particle size silt is classified and intercepted through inertia separation and vortex settlement respectively. An end face flow guiding part can also be arranged, which generates centrifugal force relying on the mechanical movement of the rotating part to dredge fine particles. The application has simple structure, no vulnerable parts, and is suitable for silt-containing underwater working conditions, and can prolong the service life of the equipment.

The utility model provides a grinding machine with an automatic cutting fluid filtering structure, which relates to the technical field of grinding machines and comprises a shell, a mounting frame is fixedly mounted on the side surface of the shell, a hydraulic rod A is fixedly mounted on the upper surface of the mounting frame, and a grinding machine is fixedly mounted at the output end of the hydraulic rod A. Cutting fluid is preliminarily filtered through a filter plate A, large-particle impurities are isolated into a collecting box, the cutting fluid is secondarily and finely filtered through a filter plate B in the collecting box, the filtering precision is remarkably improved, a lead screw is driven by a rotating head, a stop lever can slide on the lower surface of the filter plate B, and therefore the pore size of the filter plate B is flexibly adjusted, and the filtering efficiency is improved. Different filtering requirements are met, the filter plate B can be rapidly taken out of the collecting box through the design of a pull head, fine waste materials obtained after filtering can be conveniently and efficiently cleaned and maintained, and the operation efficiency and the cleaning convenience of the equipment are further improved.