5374 results about "Pulverizer" patented technology

A shredder is disclosed. The shredder includes a housing having a throat for receiving at least one article to be shredded, and a shredder mechanism received in the housing and including an electrically powered motor and cutter elements. The shredder mechanism enables the at least one article to be shredded to be fed into the cutter elements. The motor is operable to drive the cutter elements so that the cutter elements shred the articles fed therein. The shredder also includes a detector that is configured to detect a thickness of the at least one article being received by the throat, and a controller that is operable to perform a predetermined operation responsive to the detector detecting that the thickness of the at least one article is at least equal to a predetermined maximum thickness.

The present invention harvests and utilizes fluidized bed drying technology and waste heat streams augmented by other available heat sources to dry feedstock or fuel. This method is useful in many industries, including coal-fired power plants. Coal is dried using the present invention before it goes to coal pulverizers and on to the furnace/boiler arrangement. Coal can be intercepted on current coal feed systems ahead of the pulverizers. Drying fuel, such as coal, is done to improve boiler efficiency and reduce emissions. A two-stage bed utilized in the process first “pre-dries and separates” the feed stream into desirable and undesirable feedstock. Then, it incrementally dries and segregates fluidizable and non-fluidizable material from the product stream. This is all completed in a low-temperature, open-air system. Elevation of fan room air temperature is also accomplished using waste heat, thereby making available to the plant system higher temperature media to enhance the feedstock drying process.

A rolling mill has roughing, intermediate and finishing roll stands on a first side of a billet reheating furnace, and a breakdown mill on an opposite second side of the furnace. Billets are heated to an elevated rolling temperature in the furnace and are then ejected to the second side of the furnace for rolling in the breakdown mill before being directed back through the furnace for continued rolling into finished products at the first side of the furnace in the roughing, intermediate and finishing roll stands.

The invention discloses a preparation method of an anode material for a power lithium ion battery. The preparation method comprises the following steps: by adopting petroleum coke ground until the grain size is 1-6mu m, calcined petroleum coke or needle coke as a raw material, adding additives, adding a mixture to a reaction kettle to carry out first high-temperature carbonization coating under the protection of the inert atmosphere, then grinding the mixture with a grinder until the grain size is 5-13mu m, then carrying out superhigh-temperature graphitization at a temperature above 3200 DEG C, adding one or a mixture of petroleum asphalt, coal asphalt and resin to a material obtained after graphitization, and then enabling the mixture to enter a carburization furnace to undergo second coating under the protection of the inert atmosphere to obtain the anode material for the power lithium ion battery, namely a spheroidal artificial graphite material which is formed through bonding after being coated with granules and undergoes two-time coating and three-time high-temperature treatment. The preparation method has the advantages that the discharge rate property of the anode material is improved, the low temperature properties of the anode material are improved, and the latest requirements of the market for the product are further met.

An anti-jam assembly for incorporation in an article destroying appliance includes a fixed core mount assembly including a first support member spaced apart from a second support member. At least one moveable cutter shaft is disposed between and rotatably mounted to the first and second support members. A third elongate member extends in parallel relationship to the at least one cutter shaft. This third support member is moveable from a first position to at least a second position. The first and the at least second position correspond to a variable width of a feed path directing an article toward the at least one cutter. An arm is affixed to the elongate member and pivotal at a mounting surface when the elongate member moves toward the second position. A sensor activates when it detects movement of the arm. The arm and the sensor are removed from a proximity of the at least one cutter or the feed path.

The invention relates to a solid emulsifier used for oil base drilling fluid, a preparation method and an application of the oil base drilling fluid. The preparation method comprises the following steps: adding diethylenetriamine in organic acidity, adding a catalyst, heating to the temperature of 175-185 DEG C, and reacting for 1-3 hours to obtain an intermediate product which has a code name AMI-1. cooling the reaction temperature to 90-120 DEG C, adding acid anhydrides, continuously reacting for 2-4 hours, cooling to the room temperature, wherein the products is the dark brown solid, using a pulverizer for crushing to obtain the brown-red solid powder which is the emulsifier with code name EmuL-S. The emulsifier has good emulsification effect on the diesel oil, the white oil and a synthesis group, and has strong anti-temperature capability, and is cooperated with organic soil, a filtrate reducer, a wetting agent and a weighting material for constructing a high performance oil base drilling fluid system; because that the emulsifier is the powdery solid, so that the influence due to environment is little, and the storage and transport are convenient.

The invention discloses a compound feed for 0-21-days-old broiler chicken and a preparation method of the compound feed. The compound feed is prepared from various raw materials of corn, flour, soybean meal, 60% of corn protein powder, soybean oil, limestone, calcium hydrophosphate, salt, antimicrobial peptide for the poultry, choline chloride, methionine, threonine, lysine, compound enzyme of corn and soybean meal, premixed vitamin compound, premix compound of trace elements and traditional Chinese medicine addictives. The preparation method for the compound feed comprises the following steps of: weighing all raw materials; putting the raw materials into a pulverizer to be pulverized; putting the pulverized raw materials into a mixer to be uniformly mixed; and granulating the mixed raw materials in a granulator after mixing. The compound feed has the beneficial effects that the compound feed disclosed by the invention is added with the traditional Chinese medicine addictives, so thatthe compound feed can meet the all nature requirements of the green food, diseases can be prevented, the immunity of the organism is enhanced, and the production performance of the broiler chicken can be improved so as to create favorable social value and economic benefits.

The present invention relates to an automatic shredder without choosing the number of paper to be shredded which comprises a shredder core and an automatic paper feeding device, the automatic paper feeding device comprises a driving mechanism, a paper support box, a pick-up mechanism and a paper press box, the driving mechanism is fixed on the shredder core and connected with the pick-up mechanism for driving the pick-up mechanism, the paper support box comprises a first zone and a second zone, the pick-up mechanism is positioned between the first zone and the second zone and fixed to the paper support box, and its paper feeding direction is towards the second zone, one end of the paper press box is pivoted with the paper support box, the other end of the paper press box is connected detachable with the paper support box, the paper support box is fixed on the shredder core, and the second zone has a paper inlet positioned above the blade assembly of the shredder core, a magnet is positioned in the first zone, the automatic shredder further comprises an elastic paper press and retaining device mounted inside the paper press box and extending to the first zone, the magnet corresponds to the elastic paper press and retaining device, so the present invention can deal with a very large amount of paper to be shredded at one time, has a simple and convenient operation, is designed dexterously, and has a concise structure and a economical cost.

The invention discloses a method for preparing a carbon molecular sieve adsorbent. The steps are as follows: (1) solidification: polymer is used as a raw material and is arranged in a thermostatic drying oven to be solidified; (2) dry distillation: the solidified macromoleclar polymer is pulverized by a pulverizer and then is processed by dry distillation; (3) fine pulverization: the macromoleclar polymer which is pulverized and processed by dry distillation is further processed by fine pulverization in the premise that the particle diameter of the macromoleclar polymer does not meet the requirement, and ball milling or gas milling is used for preparing micro-particles; (4) molding: the macromoleclar polymer which is processed by fine pulverization is mixed and uniformly stirred with agglomerant by mass ratio, and the mixture obtained is pressed and molded by an oil hydraulic press and then is dried; (5) carbonization and activation: under the state of N2 protection, temperature is raised for carbonization so as to increase the CMS surface area; and (6) carbon precipitation and hole adjustment: the hole adjustment agent is decomposed in the carbon molecular sieve for carbon deposition, the particle diameter is shortened and is enabled to be uniform, and the carbon molecular sieve product can be obtained after cooling. The carbon molecular sieve has the advantages of high CH4 adsorbing capacity, high selectivity factor of adsorption, favorable strength, low cost and no pollution, and the performance achieves or surpasses the standard of a sample of Japan carbon molecular sieve.

The invention relates to a process for dying medlar powder, in particular to a process for freezing and drying medlar powder in vacuum. The process comprises the steps of soaking, leaching water after washing with clear water, prefreezing, freezing, vacuumizing for drying, pulverizing, and the like. The invention has the characteristics that a medlar fresh fruit is frozen and dried by adopting a vacuum freezing and drying technology disclosed by the invention, nutrient components in the medlar fresh fruit, appearance shape and color are retained to the greatest extent, and the problems that the nutrient components, appearance shape and color of the medlar fruit can not be ensured in the traditional vacuum freezing and drying process, and the like are solved; the pulverizing process adopts a low-humidity, low-rotating speed and screening process and overcomes the process defects of loss, machine bonding, saccharification, and the like of effective components in medlar, caused by overhigh rotating speed of a pulverizer; and because the pulverizing process is divided into a rough pulverizing process step and a supermicropulverizing process step, the invention has considerable comprehensive economic benefits, improves the pulverizing efficiency and ensures the effective components and color in medlar powder as much as possible.

The invention relates to a high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint which is prepared from the following raw materials in parts by weight: 450-500 parts of epoxy resin, 50-100 parts of curing agent, 50-100 parts of conductive pigment, 200-250 parts of conductive filler and 30-50 parts of assistant. The preparation method of the high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint comprises the following steps: adding the materials into a high-speed mixer; after carrying out dry mixing, adding the mixture into an extruder, and melting, mixing, cooling and pelleting at the extrusion temperature of 80-90 DEG C; and pulverizing with a pulverizer, grading, screening and packaging to obtain the finished powder paint product. The invention has the characteristic of high electric conductivity, has an absorption action on certain electromagnetic waves, can be used as a preferred coating for electromagnetic shielding, and is applied to thefields of frequency converter shells, micro-current and light-current component shells and the like. In addition, the invention has excellent anticorrosion property and favorable electric conductivity (105 ohm), and the conducting power is almost approximate to that of a metallic conductor; and thus, the high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint is an ideal antistatic coating, and can ensure safety in the aspects of fire resistance and explosion resistance.

The invention discloses a method for producing corrugated paper by utilizing papermaking waste residues and sludge. The production method comprises the following steps of: (1) pulping: breaking waste cardboard paper; meanwhile, introducing the waste residues and sludge into a hydraulic pulverizer and simultaneously pulverizing and mixing; then feeding into a high-concentration residue removing machine and removing heavy impurities; after the heavy impurities are removed from rough slurry, defibering and grading by a defibering machine; vibrating and screening the pulp by a vibration-frame type flat screen; after good pulp is further screened by a pressure screen, feeding qualified fibers into a circular screen concentrator and concentrating and delivering the qualified fibers into a papermaking section; and (2) papermaking: delivering the pulp into a preparing pool; after delivering to a high-level box by a pump, delivering the pulp to a front pressure screen and carrying out fine screening; then delivering to a circular screen part and a squeezing part; and drying in a drying part, then rewinding, cutting and packaging for storage. The method of the invention recycles the waste residues and the sludge generated in the production, saves great papermaking raw materials, prevents the emission of various waste materials and really achieves zero emission.

A concrete pulverizer adapted for mounting on an arm of an excavator including a lower jaw having a first pivot pin mechanism and a crushing surface. The crushing surface on this jaw is formed with concrete waste apertures. An upper jaw has a rear end section connectible to an end of the arm and has crushing teeth mounted on a lower side. This jaw is pivotably connected to the lower jaw by the pivot pin mechanism. The upper jaw is pivotably connected to a hydraulic cylinder actuator on the arm and can be pivoted between an upper position and a crushing closed position. There is a power mechanism for pivoting the lower jaw between a horizontal scooping position and a dumping position and this mechanism can hold the lower jaw in a crushing position while the upper jaw is being pivoted by the hydraulic cylinder actuator.

The invention provides a method for preparing an aquatic product cleaning agent based on shell powder. The method for preparing the aquatic product cleaning agent based on the shell powder comprises the steps that shells are dried or dried in sun after being degreased and desalted, high-temperature calcination and puffing are conducted after the shells are pulverized by means of a pulverizer, micro-nano crushing is conducted on the calcinated shell powder after cooling, and the natural aquatic product cleaning agent is obtained by adding a natural cleaning assistant. According to the method for preparing the aquatic product cleaning agent based on the shell powder, greasy dirt and fishy matter on the surface of aquatic products can be effectively absorbed and removed, the intrinsic character of food is not changed, the sterilization function and the freshness retaining function are achieved, the cleaning agent is safe, non-toxic and degradable, the aquatic product can be directly eaten or cooked after being cleaned, and the cleaning agent is suitable for cleaning various aquatic products.

The invention relates to the technical field of harmlessness treatment of smelting wastes, and especially relates to a ceramsite prepared by using smelting wastes, and a preparation method thereof. The ceramsite comprises 10-90% of smelting waste powder, 5-40% of municipal sludge, 4-20% of fly ash, 0-20% of gangue and 0.1-10% of a curing agent. The preparation method of the ceramsite comprises the following steps: 1, crushing the smelting wastes by using a crusher to prepare the smelting waste powder; 2, weighing the smelting waste powder, the municipal sludge, the fly ash, gangue and the curing agent, mixing, and uniformly stirring to prepare ceramsite powder; 3, conveying the ceramsite powder to a ball forming granulation machine, and carrying out granulation molding to prepare ceramsite balls; 4, drying the ceramsite balls; and 5, calcining he dried ceramsite balls to prepare the finished ceramsite. The ceramsite prepared in the invention has the advantages of light weight, environmental protection and wide uses; and the preparation method recycles the smelting wastes, and has good economic and social benefits.

The invention discloses a kitchen waste and food waste treatment process and a kitchen waste and food waste treatment system. The process comprises steps as follows: mixtures of kitchen waste and food waste are sorted by an automatic sorting table and put into a pre-treatment pulverizer for pulverizing; a liquid-phase mixture obtained through the automatic sorting table and an oil-water mixture separated from the pulverizer enter oil-water separating equipment for oil-water separation; a water phase separated from the oil-water separating equipment is filtered and is discharged as life irrigating water finally; an oil phase enters biological separating equipment for biological separation, and biological oil is prepared finally. The kitchen waste and the food waste pulverized by the pre-treatment pulverizer are taken as nutrition sources and are put into a polypide cultivation production line for saprophagous polypide cultivation, adult polypides enter a dryer for drying treatment and are processed and produced into feedstuff for poultry, fish and the like, polypide waste and residues are degraded, a part of a degraded material is used for generating electricity in a biomass fuel mode, and the other part is packed and transported outwards in an organic fertilizer mode for use.

The invention relates to a production method of spherical graphite, which is characterized in that spheroidizing equipment is used for processing the graphite into sphericity or potato shape with grain size of 10-45mu m; the spheroidizing equipment comprises n groups of devices; each group is formed by connecting a Roots blower, a dust collector, a cyclone separator and a pulverizer in turn; and a discharge outlet of the cyclone separator in the (n-1)th device is connected with a feed inlet of the pulverizer in the nth device. The method dispenses with personnel operation, is higher in yield and efficiency and lower in cost in unit time and realizes automatic closed production of the whole production line. Compared with the prior art, the method is characterized in that the spherical graphite produced by the method has better sphericity, higher tap density, large specific capacity being more than 350mAh/g, small specific area, excellent lithium intercalation and de-intercalation capabilities and cycle stability and 500-cycle capacity-keeping rate being more than 80%.

The invention relates to a magnetic rheological polishing fluid and a preparing method for the fluid. The magnetic rheological polishing fluid comprises by volume magnetic particles 30-40%, pure water 45-55%, additive 5-10%, surface active agent 3-5% and polishing powder 5-8%. The preparing method comprises: the magnetic particles are surface cleaned and activated, the surfaces of the magnetic particles are treated by a hi-speed ball pulverizer. The magnetic rheological polishing fluid prepared by the invention is of hydrolyzation function. The preparing method is simple. The fluid is of a good resistance to settlement and conglobation, low zero-field viscosity, high polishing efficiency, good effect, long service life, and is applicable for optic polishing. The invention solves such problems of prior magnetic rheological polishing fluid as high viscosity, weak magnetizing strength, liable to caking, not stable in settling and conglobation, liable to rust, short service life and low efficiency. The magnetic rheological polishing fluid prepared by the invention is of high efficiency, and can facilitate the surface finish of a k9 glass to increase from 400nm to 0.6 nm in 30 minutes. The invention can be widely used in the super surface polishing of optic glass.

The invention relates to a slow controlled release diatomite fertilizer which is characterized in that 16 to 20 portions of urea, 12 to 17 portions of diammonium phosphate, 10 to 15 portions of potassium chloride and 8 to 12 portions of diatomite are put in a pulverizer to be crushed and sieved by a 80-mesh sieve and then are put in a granulator to be granulated by a rotary drum; 50 to 100ml water is added slowly and uniformly to be used as coupling agent during the granulating process; after the granulation, 100 to 120ml coating material of polyvinyl alcohol is sprayed to rotating fertilizer particles by a high-pressure spray gun uniformly in small amount; after coating, rosin and olefin are poured into the rotary drum based on the proportion of 1 to 2 to be melted and made into sealant; the temperature is kept between 70 DEG C to 80 DEG C; and finally, the coated fertilizer is poured into the rotary drum to be sealed. The invention can separate the soil from the fertilizer, avoids the direct contact of the soil and the fertilizer and controls the release of nutrient; the slow controlled release diatomite fertilizer has the functions of preserving moisture and fertility, prolonging the fertilizer effect by slow release and improving the soil; and the slow controlled release diatomite fertilizer causes no pollution to the soil.

The invention provides a method for extracting black fungus polysaccharide, which comprises the following steps of: (1) taking dry black fungi, mechanically pulverizing the dry black fungi coarsely, screening the pulverized black fungi with a 40-mesh sieve, then pulverizing the black fungi again by an ultrafine pulverizer, and adjusting and controlling the rotating speed of a fan of the ultrafine pulverizer to between 10,000 and 22,000 r/min to obtain ultrafine powder of the black fungi; mixing the ultrafine powder of the black fungi and water in a mass ratio of 1:20-100; extracting the mixture for 20 to 90 minutes by using 10 to 40 kHz ultrasonic waves at the temperature of between 40 and 80 DEG C; centrifugating extracting solution to obtain a supernatant fluid and a deposit; adding the supernatant fluid into a mixture of diatomite and activated carbon in a mass ratio of the diatomite to the activated carbon of 1 to 3, wherein the added amount of the mixture is 2 to 8 percent of the weight of the supernatant fluid; fully stirring the mixture, than then filtering the mixture; performing membrane filtration on the filtrate by using a 50kD polysulphone membrane; and collecting macromolecular concentrated solution which is not filtered through the membrane, and drying the macromolecular concentrated solution to obtain the black fungus polysaccharide. The prepared black fungus polysaccharide has high purity and high bioactivity.

The invention described is a process for improving the performance of a commercial coal or lignite fired boiler system by supplementing its normal coal supply with a controlled quantity of thermally beneficiated low rank coal, (TBLRC). This supplemental TBLRC can be delivered either to the solid fuel mill (pulverizer) or directly to the coal burner feed pipe. Specific benefits are supplied based on knowledge of equipment types that may be employed on a commercial scale to complete the process. The thermally beneficiated low rank coal can be delivered along with regular coal or intermittently with regular coal as the needs require.

A cutting blade for a morcellator has a generally cylindrical shape and includes a sidewall having an inner surface and an outer surface, each of which at least partially resides respectively in concentric first and second cylindrical planes. The blade sidewall further includes a beveled or sloped surface that extends from the inner surface toward the outer surface to define a sharpened edge situated in the second cylindrical plane in which the outer surface of the cutting blade sidewall resides. The sloped surface is provided to protect the sharpened edge of the morcellator blade when it is not obvious to a surgeon operating the morcellator that a tenaculum used to grasp anatomical tissue at the surgical site may have its tissue grasping claws spread to such an extent that the claws may contact the cutting blade of the morcellator. Under such circumstances, the tenaculum will contact the sloped portion of the inner surface of the cutting blade, rather than the sharpened edge, thereby minimizing the chance that the sharpened edge will become dull or damaged.

The invention relates to a domestic garbage disposer of which a pulverizer and a squeezer are integrally arranged, wherein the pulverizer part comprises a pair of roller cutters which are arranged in a pulverizing box and are provided with saw-toothed blades respectively; blades of two groups of roller cutters are mutually staggered and engaged and do different-speed opposite rotation through a reducing motor and a transmission gear; the squeezer part comprises a squeezing screw and a pushing screw which are arranged in a stainless steel screen and a squeezing box; pitch of the squeezing screw from a pushing section to a squeezing section is gradually decreased and the diameter of screw shafts is gradually increased; the diameter of the screw shaft of the pushing screw is less than the diameter of the screw shaft of the squeezing screw; the pitch of the pushing screw is the same as the pitch of the squeezing screw; the pushing screw and the squeezing screw are arranged in a staggering way; and the squeezing screw and the pushing screw do equal-speed operation through the reducing motor and a transmission chain wheel. The domestic garbage disposer has the advantages of simple structure, energy saving, high disposal capacity, convenience in maintenance and capabilities of fully removing moisture in domestic garbage, reducing the size of the garbage, facilitating recycling of the garbage material and saving the transportation cost.

The invention discloses a sludge pyrolysis carbonization technique and device. The technique comprises the following steps: sludge is pressed by a press, pulverized by a pulverizer, mixed by a mixer, dried in an internal heating rotary kiln drying machine, sent into a storage bin, and sent into a pyrolysis carbonization furnace; the sludge is subjected to pyrolysis carbonization in the pyrolysis carbonization furnace; the product solid carbon mixture is sent out of the system, and the products vapor and pyrolytic gas enter a separation purification tower to be separated and purified; the purified combustible gas is sent into a combustor and combusted into an internal heating rotary kiln drying machine delivery heat source, and the purified heavy components are sent into the mixture and mixed with the sludge to perform secondary pyrolysis; the flue gas generated by the heating furnace is discharged into a hot-blast furnace to perform secondary ablation; and the exhaust generated by the whole device is discharged by an outlet I of the internal heating rotary kiln drying machine, and is treated and discharged after reaching the standard. The device has the advantages of simple production technique, stable product state and no secondary pollution, and implements the reduction, harmless treatment and recycling of sludge treatment.

The present invention relates to a new type protection device for shredders which comprises a paper number detecting device mounted at the paper inserting passage of the shredder, a warning device mounted on the shredder and a controlling device in line connection with the paper number detecting device and the warning device respectively, mounted in the shredder and in line connection with the driving component of the shredder driving the shredder blades, preferably the protection device further comprises an insert detecting device in line connection with the controlling device and mounted at the paper inserting passage, and at least one opaque shielding component mounted at the paper inserting passage and at the middle of which there is at least one slot along the length direction, the present invention controls the number of the paper to be shredded during the paper inserting stage, and shreds paper automatically only in a predetermined value range, to avoid abnormalities that result in failure of the machine such as jam and tooth breaking when the shredder is shredding many pieces of paper, so as to reduce maintenance times and cost, extend service life, and make application of shredders safer and more reliable, more convenient and simpler, then to achieve better protection of shredders.

The invention provides a cassia obtusifolia tea bag with functions of weight reduction, hypotension and hypoglycemic effect, which is characterized in that the production process comprises the following steps: washing, cleaning and drying the cassia obtusifolia stem, leaf and grain, crushing by a pulverizer to 280 meshes, uniformly stirring, packing, disinfecting to obtain the cassia obtusifolia tea bag with functions of lipid lowering, hypotension and hypoglycemic effect. The optimal composition and the weight part ratio of the tea bag are: 40-60 parts of dried cassia obtusifolia stem, leaf and grain, 10 parts of dried lotus leaf, 5 parts of haw, 5 parts of dried balsam pear, 5 parts of Chinese wolfberry, 10 parts of Pu'er tea, 10 parts of cassia seed, 5 parts of mulberry leaf, 5 parts of folium apocyni veneti, 5 parts of Chinese yam as medicine, 3 parts of rhubarb, 2 parts of chrysanthemum, 2 parts of honeysuckle flower, 1 part of boat-fruited sterculia, 5 parts of cassia seed, 5 parts of kudzu root and 10 parts of additive. The additive is composed of fatty acid sucrose ester, xylitol, mannitol crystal, natural menthol, citric acid, trisodium phosphate, sodium saccharin and steviosid; the above components are carried out the processes of crushing, mixing, uniformly stirring, packing and disinfecting to obtain the tea bag.

The invention discloses an extrusion layered crushing grinding type superfine smashing device. The extrusion layered crushing grinding type superfine smashing device comprises a rack and a main shaft. The main shaft is located on the centerline of the rack. An extrusion layered crushing device is fixedly arranged on the rack and is fixed to the main shaft through a key I. A grinding device and a discharging device are sequentially arranged below the extrusion layered crushing device. The extrusion layered crushing device and the grinding device are both fixed on the main shaft and operate synchronously under the action of an external motor. The extrusion layered crushing device comprises an extrusion layered crushing barrel and a layered crushing disk, the layered crushing disk is installed on the main shaft through the key, and groove and ridge alternating structures are arranged on the surface of the layered crushing disk and the inner wall of the extrusion layered crushing barrel. The grinding device is composed of three levels of grinding mechanisms, and each grinding mechanism comprises a grinding disk and a grinding block. The extrusion layered crushing grinding type superfine smashing device can successfully smash a large number of materials greatly different in particle size at a time, the condition that materials treated with smashers need to pass through screens is improved, the smashing efficiency and smashing effect are improved, and the production efficiency of superfine powder can be improved.

The invention discloses a method for preparing a natural pork or beef bone flavor essence, which mainly comprises the following steps: pulverizing clean pork or beef bones into powders by a pulverizer; adding salt into the powder and decocting the powder; using complex enzyme for mild and directional enzymolysis; using complex bacteria giving priority to lactobacillus or lactobacillus for microorganism zymolysis; and using suitable amino acid and glucide for Maillard reaction. In the preparation method, ossein enzymolysis is successful for the first time to obtain high-quality nutritional protein peptidohydrolase, a microorganism zymolysis method is used to successfully remove the bitterness of enzymolysis products, and Maillard reactants and reaction conditions are optimized to make the pork or beef flavor essence mellower.

The invention relates to a system for pre-drying coals with high water content by utilizing residual heat of boiler gas. The system comprises a boiler, a gas pre-processing system, a raw coal pre-drying system and a desulfurizing system that are sequentially connected with one another by gas pipelines; the system also comprises a raw coal pre-processing machine and a coal pulverizer; the raw coal pre-processing system is connected with a raw coal pre-drying system by a coal conveying pipeline; the coal pulverizer is connected with the raw coal pre-drying system and the boiler respectively by the coal conveying pipelines; and furthermore, the coal pulverizer is also connected with the gas pre-processing system by the gas pipeline. In the invention, the boiler smoke is used as a drying medium of the coal with high water content; part of water in the coal is removed before the coal is pulverized so that the coal quality is improved, the drying treatment requirement of the powdering system is reduced, the dimension of the boiler and a blowing system can be reduced, the manufacturing cost can be reduced, and the heat efficiency of the boiler system can be improved by about 2%.

The invention discloses a two-set roll crusher which comprises a frame, wherein the upper end of the frame is provided with a feed hopper; the lower end of the frame is provided with a discharge hopper; the crusher is provided with two sets of compression rollers which are respectively a course grinding compression roller and a fine grinding compression roller from the top down; and the lower part of each set of the compression roller is provided with a compression roller cleaning scraper. The two-set roll crusher has the advantages of convenient operation and maintenance, stable running, low noise, low energy consumption, high output, no pollution, obviously reduced labor intensity of operators, and the like, and is an optimum device for crushing oil materials.