68results about How to "Different sizes" patented technology

The invention discloses a working size switching circuit for power transistors in a DC-DC converter, mainly solving the problem of difficulty in reaching high efficiency by the traditional DC-DC converter when in a low load state. The working size switching circuit comprises a pulse width modulation (PWM) comparing module, a first drive module, a first pair of power MOS (Metal Oxide Semiconductor) transistors, a hysteresis comparing module, a second drive module and a second pair of power MOS transistors, wherein the PWM comparing module controls the first pair of power MOS transistors to work through the first drive module; the hysteresis comparing module compares a load current with a switching threshold current to generate a judging signal and controls that the second pair of power MOS transistors does not work when the load current is lower than the switching threshold current through the second drive module and the second pair of power MOS transistors works when the load current is more than the switching threshold current, so that actually working power transistors of the DC-DC converter are different in quantity under same load conditions, and the working size of the power transistors are switched. According to the working size switching circuit, the efficiency of the DC-DC converter when in the light load state can be increased, and load currents corresponding to the switching of the working sizes of the power transistors are constant under various working duty ratios.

The present invention seeks to provide an implant configured to utilize at least two different scar-generating mechanisms that are generated in sequential or overlapping stages. For example, in one embodiment the present invention provides an expandable device that can be positioned at a desired target location within a patient to generate mechanical ablation damage. After a predetermined amount of mechanical ablation has occurred, additional ablation damage is generated by a different source, such as energy delivery, drug delivery, or inflammatory material delivery. In this respect, the overall ablation scarring can be better controlled by utilizing the ablation techniques that are most appropriate at specific phases of a technique or locations within a patient.

The invention relates to a multidrug resistant cell strain for oophoroma, which is characterized in that a human oophoroma SKOV3 cell strain is selected as a parental cell; the action concentration of chemotherapeutics of etoposide (VP16) is gradually increased from 0.1 mu g / ml to 3 mu g / ml; and drug resistant SKOV3 / VP16 cell strain is established. The SKOV3 / VP16 cell can stably grow, transfer and reanimate in 3 mu g / ml VP16, makes the VP16 generate drug resistant index (RI) of 21.548, and performs intersect drug on MTX, DOX, DDP, VCR, 5-Fu and MMC except the VP16. The invention aims to provide a drug resistant tumor cell model for relative study on the tumor.

The invention relates to a multifunctional health care pillow for infants. The multifunctional health care pillow for the infants comprises a pillowcase and a pillow interior. The pillow interior comprises a heat-preserving layer and a filling bag, and the filling bag is filled with Chinese herbal medicine filler composed of, by weight, 1-8% of bamboo charcoal, 1-8% of arabian jasmine flowers, 50-70% of negundo chastetree fruits and 20-40% of cassia seeds. According to a preparation method of the multifunctional health care pillow for the infants, the bamboo charcoal is smashed and wrapped by cotton cloth to form a charcoal bag, the cassia seeds, the arabian jasmine flowers and the negundo chastetree fruits are screened, cleaned, dried and disinfected and then mixed with the charcoal bag uniformly according to the proportion of the filler, then the mixture is placed into the filling bag, the bag opening is sewn, the filling bag is placed in the depression of the heat-preserving layer and then placed into the pillowcase together with the heat-preserving layer, and finally the multifunctional health care pillow for the infants is obtained after sealing the pillowcase. The multifunctional health care pillow for the infants has the better health care effect through the double effects of the Chinese herbal medicine filler with reasonable compatibility and the ramie pillowcase, has the good shape protection and correction function and can be adjusted in height and used in cold or hot environment.

The invention provides a non-shrinkage high-sound-isolation self-heat-insulation heat-isolation sand light wall module and a manufacturing method thereof and belongs to the field of wall materials. The module and the manufacturing method solve the technical problems that sand with the sand content larger than 3% can not be used as an existing wall material, cracking occurs, the sound-isolation effect is poor, and a light wall material can not serve as a self-bearing wall. A non-bearing wall module is manufactured through super-light aggregate, cement, sand, bulk cement shrinkage-preventing agents, interface activity enhancers, solution viscosity hollow particle polymer and water. A self-bearing wall module further comprises coarse aggregate. The non-bearing wall module is manufactured in the steps that materials are stirred, poured into a half-piece type mould, pressurized and formed through variable-frequency vibration and buffering, and maintained; adhesive faces are cut flattened and bonded together, and the periphery of the module is cut and flattened. The self-bearing wall module is manufactured in the steps that materials are stirred, poured in a whole-piece mould, pressurized and formed through variable-frequency vibration and buffering, and maintained. The wall module integrates non-shrinkage, self-heat-insulation, heat-isolation, high-sound-isolation and fire resistance, sand with the sand content being 3-25% is used, the manufacturing method is simple, and construction is convenient.

The present invention relates to an apparatus and a method for making products having various shapes. The apparatus is for making a product by shaping or processing work piece using a relative movement between the work piece and a tool. The apparatus is provided with a work piece support on which the work piece is located, a revolution-rotation driving device including a first axis and a second axis in parallel with the first axis and revolving around the first axis, the device revolving the work piece support around the first axis and rotating the work piece support on the second axis; and a tool support for supporting the tool in such a manner that the tool is maintained in a predetermined position with respect to the first axis. The revolution-rotation driving device further includes a revolution-radius adjustment for adjusting a distance between the first axis and the second axis. Further, the revolution-rotation driving device maintains a direction of the revolution of the work piece support and a direction of the rotation of the work piece support in a same direction and allows a ratio of the number of revolution of the work piece support to the number of rotation of the work piece support to be maintained in a constant ratio of n (natural number) : 1.

The invention relates to a fullerenes complex and an application of the fullerenes complex in removing free radical in smoke. A metallic organic matrix compound crystalline material is taken as a carrier, fullerenes molecules are absorbed in the surface or pores, and the obtained complex is used as the material for removing the free radical in the smoke. The result shows that the free radical in the smoke is well removed; the free radical in the cigarette smoke can be removed, and the free radical in vehicle exhaust, industrial waste gas and indoor gas can be removed as well.

The invention provides a gas distributor and a gas distribution system comprising the gas distributor. The gas distributor comprises at least one gas distribution disc; the gas distribution disc is of a disc type structure formed by assembling a plurality of corrugated sheets; corrugated edges of the corrugated sheets are not arranged along the vertical direction; and the inclining directions of the corrugated edges of the two adjacent corrugated sheets are opposite. According to the gas distributor provided by the invention, on one hand, air bubbles with different sizes flow through the gas distributor to from small air bubbles with similar sizes and then the small air bubbles are uniformly distributed on the whole cross section of the equipment, so that the mass transferring speed can be easily improved and the gas distributor provided by the invention has the advantages of uniform air bubble size, uniform distribution and large distribution area; and on the other hand, parameters including the composition, temperature, flow speed and the like of fluid are prone to be consistent in the radial direction of mass transferring equipment, so that the back-mixing the fluid is even avoided.

The invention discloses a novel folding screwdriver. The novel folding screwdriver comprises screwdriver shells, fixing pieces, fixing shafts, screwdriver heads, retaining rings, screwdriver head groove pieces, driving lock pieces, driving lock piece fixing pieces, a rotating shaft, a manual stirring wheel and a cam piece. The novel folding screwdriver is simple in structure and convenient to use and carry. The screwdriver head groove pieces are welded to the retaining rings, and the manual stirring wheel is rotated with the hand, so that the rotating shaft and the cam piece are driven to rotate, and the driving lock pieces or locking parts are clamped in clamping grooves of the screwdriver head groove pieces. The screwdriver heads are fixed at a certain angle, and it is avoided that the screwdriver heads go back to a screwdriver handle along an original path due to uneven force exerting, the kinds of the screwdriver heads are multiple, the screwdriver heads are different in specification and replaceable and can be fixed at multiple angles, applicability is higher, and use is more convenient.

The invention discloses a straddle type single-rail track beam linear adjustment system. The system comprises a straddle type monorail support seat and a three-dimensional adjustment device, wherein the three-dimensional adjustment device comprises a sliding seat I, a vertical adjustment mechanism, a horizontal adjustment mechanism and a longitudinal adjustment mechanism which are installed on a base, the base is arranged on the top of a cover beam, the sliding seat I is installed in the middle of the base in a sliding manner, a sliding pair I is arranged between the sliding seat I and the base, the vertical adjustment mechanism is arranged between a track beam and the sliding seat I, the horizontal adjustment mechanism is located between the two vertical hydraulic jacks, and the longitudinal adjustment mechanism is arranged on the base at the left and right sides of the sliding seat I. The movement of the hydraulic jacks of the vertical, horizontal and vertical adjustment mechanisms is controlled by oil pressure, so that the adjustment of the liner track beam is realized. The linear adjustment system has the advantages of being simple in structure, convenient to install and adjust, safe and reliable; the fine adjustment of the vertical, horizontal and longitudinal of the track beam is realized without the use of a beam erecting machine; and after the liner adjusting is finished, the support can be locked and positioned again by adjusting the horizontal and vertical adjustment mechanisms.

The invention relates to a dry press granulation ceramics fabrication method. It spreads the color powder on the cloth band in lamination mode, pressing the powder in the compression ratio of 30-50% to get the fine powder, which is mixed with the powder to fall freely to the movable hopper to form mixing material of various sizes, shapes grains, through mixed material screening and pressing to form the ceramic product. It is simple in process, reduced in labor cost, with product rich in decoration and natural in appearance.

The invention discloses a method for preparing a single-cell suspension of aortic cells of a mouse. The method is characterized by specifically comprising the following steps of firstly, preparing 1 ml of an enzyme mixed solution, the surviving healthy wild mouse, an operating table of which the whole tabletop is a flat ice surface and a plurality of instruments; and then, performing intraperitoneal injection anesthesia on the prepared wild mouse by 200-500 microliters of chloral hydrate until the mouse is dead, immediately performing perfusion flushing on blood vessels of the wild mouse by 20ml of a phosphate buffer salt solution, performing overall disinfection on the dead wild mouse by alcohol with the volume fraction of 75%, performing thoracotomy andlaparotomy after disinfection is completed, and exposing the heart and the aorta. The whole operation process is completed on the operating table. Preparation of a single-cell suspension of vascular tissues of the mouse by using a shearing and mixed enzyme combined digestion process is simple, convenient and feasible, more immune cells exist, and an effective tissue single-cell suspension preparation method is provided for research of vascular immune cells.

The invention relates to a morning tea bag for preserving health in autumn. The morning tea bag is prepared from 2-3 parts by weight of autumn tea and green tea particles, 1-2 parts by weight of liquorice particles and 1-2 parts by weight of Chinese wolfberry fruit particles according to the method comprising the following steps: crushing finished green tea for later use after drying; adding honey in raw liquorice tablets, crushing for later user after drying at a constant temperature; crushing fresh Chinese wolfberry fruit for later use after vacuum freeze drying; and sterilizing at a high temperature after uniformly mixing substances obtained through crushing and fried cassia seed, and sub-packaging to obtain the morning tea bag. According to the morning tea bag, according to a four-season health preserving principle, raw materials are reasonably taken and matched; and by adopting a special process, natural original tastes of the raw materials are preserved, thus a production process is simplified, and the production cost is lowered. The prepared health-preserving tea bag has the characteristics of being uniform in particles, being nutritional, being fresh and natural in taste, being mellow in aftertaste and the like, has an auxiliary relieving function on symptoms such as the stomach illness, chronic bronchitis and common cold in autumn, has a certain function of reducing fat, blood pressure and blood sugar, and is suitable for being used as morning and forenoon health-preserving tea in autumn.

A built-in redundancy analyzer and a redundancy analysis method thereof for a chip having a plurality of repairable memories are provided. The method includes the following steps. First, the identification code of a repairable memory containing a fault (“fault memory” for short) is identified and a parameter is provided according to the identification code. The parameter includes the length of row address, the length of column address, the length of word, the number of redundancy rows, and the number of redundancy columns of the fault memory. Since the parameter of every individual repairable memory is different, the fault location is converted into a general format according to the parameter for easier processing. A redundancy analysis is then performed according to the parameter and the converted fault location, and the analysis result is converted from the general format to the format of the fault memory and output to the fault memory.

The invention provides a piece of physical multi-point light attack equipment which serves as equipment for a smart card to realize physical multi-point laser pulse injection. The equipment is used mainly in the smart card information security field and serves as special equipment to detect the testing ability of a smart card product to correspond to laser disturbance. The equipment comprises a laser, optical fibers, optical fiber collimators, a CCD camera and an adjustable platform wherein the laser is connected with the two channels of optical fibers; the far ends of the two channels of optical fibers are connected with the optical fiber collimators respectively so that the light emitted by the laser from the optical fibers are in parallel. In this way, the laser energy loss is reduced; the laser energy is focused; and then, through the CCD camera, the light spots of the two laser beams are observed so as to move them to the target position on the surface of a chip that requires to be analyzed; in doing so, the physical multi-point light attack testing and analyzing can be realized. The positioning of the target position is realized through the optical fibers in connection with a handheld infrared laser which emits visible red light to ensure the accuracy of positioning. The equipment of the invention could position accurately; the laser energy loss is small; the equipment is operated conveniently; its cost is low but efficiency is high.

The invention relates to a multi-continuous-electrode electrolytic tank for the preparation of a high-performance aluminum material, solving the problem that the aluminum material produced by the traditional aluminum electrolytic tank cannot meet the requirements on high performance. A single continuous electrode device consists of a plurality of electrode bodies and an electrode box body; a metal framework is arranged at the upper part of the electrode box body; a bearing fastening ring is arranged on an outer sidewall of the metal framework; a bearing hook connecting piece is fixedly arranged at the lower side of the bearing fastening ring; a sealing cover plate framework is arranged at the lower part of the electrode box body; conductive rods penetrate among sealing cover plates; bearing hooks are arranged between the lowest layer of conductive rods and the bearing hook connecting piece; either a filler framework or a crust-breaking, blanking and exhausting mechanism or both the filler framework and the crust-breaking, blanking and exhausting mechanism are arranged in the metal framework; and an exhaust port is arranged in a metal platform. According to the multi-continuous-electrode electrolytic tank for the preparation of the high-performance aluminum material, the working procedures, such as electrode forming, roasting, assembling and replacing, electrode scrap recovery processing and the like and corresponding environmental pollution are saved, and the multi-continuous-electrode electrolytic tank has the advantages of small investment, simple process, low running cost, simplicity and convenience in operation and energy saving and environment-friendliness.

The invention discloses a preparation process of a jellyfish droplet ceramic product, which comprises the following steps: preparing blank mud and glaze slip, and carrying out throwing molding, fettling, biscuiting and cooling on the blank mud to obtain a blank body; pouring the glaze slip into the green body, staying for 25-30 seconds, pouring out the glaze slip, airing, reversely buckling the green body into the glaze slip, soaking for 25-30 seconds, and not glazing and airing the outer bottom of the green body; and putting the glazed and air-dried green body into an electric kiln for roasting, and taking out of the kiln. A reasonable formula is obtained through scientific proportioning, an innovative firing mode is adopted, finally the jellyfish droplet ceramic product is obtained, theglaze bottom color of the ceramic product is black, oil drops are silver blue jellyfish drops, and the Jellyfish droplet ceramic product is hidden, transparent, different in size, flexible, fat and smooth in glaze and small in number of needle holes.

The invention relates to a traditional Chinese medicine preparation for treating burns and scalds through external application and a preparation method of the traditional Chinese medicine preparation, and belongs to the technical field of traditional Chinese medicines. The traditional Chinese medicine preparation is prepared from the following Chinese medical herbs: snakegourd fruits, dried alum, angelica dahurica, agastache, radix paeoniae rubra, pearls, astragalus membranaceus, almonds, groundsel, olibanum, borneol, angelica, cattail pollen, fructus forsythiae, Szechuan lovage rhizome, musk, phellodendron amurense and balm. The traditional Chinese medicine preparation is mainly used for treating the burns and scalds, and has the obvious technological advantages that the painkilling effect is instant, no blister is generated, the wound healing is rapid, and small scars are left after the burns and scalds are cured; besides, the traditional Chinese medicine preparation is stable in medicinal efficacy, simple, convenient and feasible in preparation process, and suitable for industrial mass production.

A built-in redundancy analyzer and a redundancy analysis method thereof for a chip having a plurality of repairable memories are provided. The method includes the following steps. First, the identification code of a repairable memory containing a fault (“fault memory” for short) is identified and a parameter is provided according to the identification code. The parameter includes the length of row address, the length of column address, the length of word, the number of redundancy rows, and the number of redundancy columns of the fault memory. Since the parameter of every individual repairable memory is different, the fault location is converted into a general format according to the parameter for easier processing. A redundancy analysis is then performed according to the parameter and the converted fault location, and the analysis result is converted from the general format to the format of the fault memory and output to the fault memory.

The invention provides a positionable overrunning clutch. The positionable overrunning clutch comprises an outer ring, an inner ring and a plurality of balls for connecting the outer ring with the inner ring; a groove channel is formed in the periphery of the inner side wall of the outer ring, and a corresponding groove channel is formed in the periphery of the outer side wall of the inner ring; the balls are located between the two groove channels and can roll along the groove channels; and one of the inner side wall of the outer ring and the outer side wall of the inner ring is provided with a ratchet, and the other one of the inner side wall of the outer ring and the outer side wall of the inner ring is provided with a pawl capable of being engaged with or separated from the ratchet. According to the positionable overrunning clutch, the relative positions of the inner ring and the outer ring can be fixed, when the system overruns, the performance is not affected, and when the system is engaged, the relative positions of the inner ring and the outer ring are fixed and unchanged.

The invention discloses a double-layer plastic film thermal cutting and bonding knife which comprises a servo roll, a rotary dead knife, a traction iron roll, a traction rubber roll, electric heating rods, a fixed electric heating rod, a blade assembly, and the like. The servo roll is arranged at the front end of the rotary dead knife, the fixed electric heating rod and the blade assembly are arranged above the rotary dead knife, blades are arranged on the fixed electric heating rod and the blade assembly, the electric heating rods are arranged on the fixed electric heating rod and the blade assembly, the traction iron roll is arranged under the rotary dead knife, the traction iron roll and the traction rubber roll are arranged on the two sides of a double-layer film, and a rotary dead knife box is arranged on the rotary dead knife. According to the double-layer plastic film thermal cutting and bonding knife, the electric heating rods and the servo roll are arranged, double-layer plastics are combined through heat, and the integration of cutting and bonding is achieved; sizes of plastic films are different when one machine is used for producing several plastic films at the same time; the problems of low efficiency and high energy consumption in the traditional production process are avoided. The double-layer plastic film thermal cutting and bonding knife is simple in structure and convenient to operate, improves production efficiency, reduces energy consumption, saves energy and reduces cost.

The invention provides a fabric with a starry-sky flicker effect and a preparation method thereof. The fabric with the starry-sky flicker effect is of a double-sided weave structure, a hollow structure is arranged in the middle and provided with pad lining yarn weaves, and the pad lining yarn weaves are woven from polyester yarn. The fabric with the starry-sky flicker effect is woven by means of an eight-mold weaving method. The fabric has the starry-sky flicker effect and the advantages of good comfort, breathability and elasticity.

The invention discloses a fine crushing device for a mineral crusher. The fine crushing device comprises a shell, wherein the top end and the bottom end of the shell are sequentially connected with acharging hole and a discharging hole; a first motor and a second motor are sequentially and fixedly mounted on the outer shell wall of the shell from top to bottom; the output ends of the first motorand the second motor are sequentially and fixedly connected with a first rotating shaft and a second rotating shaft through a shaft coupler; the first rotating shaft and the second rotating shaft penetrate through the shell wall of the shell and extend inwards and are respectively and fixedly rotated on the inner shell wall of the shell through second bearings; the two second bearings are fixed tothe inner shell wall of the shell; the positions on which one side shell wall, close to the first motor, of the shell corresponds to the first rotating shaft and the second rotating shaft are provided with two first bearings; the first rotating shaft and the second rotating shaft are fixedly and rotatably connected with the corresponding first bearings. According to the fine crushing device for the mineral crusher disclosed by the invention, when mine rocks are crushed, the sizes of discharging mine rocks are conveniently adjusted, and meanwhile, the mine rocks with smaller sizes are conveniently collected.

The present invention relates to a kind of preparation and purification method of saline steppe protoplast, which comprises the following steps: 1. Planting of seedling; 2. Selection of blade; 3. Obtaining of protoplast; Then put it into the enzymolysis solution; 4. Purification of protoplasts, after enzymolysis, add an equal volume of washing solution, and finally use a pipette to draw 4-5ml of the supernatant, which is the purer protoplasts; 5. The mensuration of protoplast yield, calculate the protoplast yield that every gram of blade obtains according to adding how many blades in the enzyme solution, calculation result expresses with the number of protoplasts per gram of blade (piece / g). The present invention is simple and easy, and the obtained protoplasts have high purity, and the number can reach 8.4×104 / g, and can also avoid tissue culture pollution, and can be used for hybridization of somatic cells, various organelles (such as nuclei, chloroplasts, mitochondria, vacuoles, etc.) ) separation, the construction of bioreactors and the fusion breeding of protoplasts lay the foundation.

The invention discloses an L-shaped clamp-adopted steel pipe signboard stretchable frame, and belongs to the technical field of electric power system signboard installation devices. The L-shaped clamp-adopted steel pipe signboard stretchable frame comprises a first L-shaped mounting frame and a second L-shaped mounting frame, the second L-shaped mounting frame is mounted on a cross-shaped structure, wherein the cross-shaped structure comprises a linear horizontal frame, one end of the linear horizontal frame is mounted on the second L-shaped mounting frame, the other end of the linear horizontal frame is arranged to be of a slot type structure, a horizontal extension plate is inserted into the slot type structure, a vertical frame body perpendicular to the linear horizontal frame is weldedto the position, close to the slot type structure, of the linear horizontal frame, the upper end and the lower end of the vertical frame body each are arranged to be of a slot type structure, and vertical extension plates are inserted into the corresponding slot type structures, and bolt mounting holes are formed in the first L-shaped mounting frame, the second L-shaped mounting frame, the linearhorizontal frame, the vertical frame body, the horizontal extension plate and the vertical extension plates. The L-shaped clamp-adopted steel pipe signboard stretchable frame can be universally usedfor mounting of signboards of various sizes, the mounting process is fast, and the mounting effect is good.

The invention relates to an antioxidant beautifying mask and a preparation method thereof, and belongs to the technical field of cosmetics. The preparation method comprises the following steps: gelatinizing 10-30 weight parts of castanopsis sclerophylla powder to obtain a gelatinized castanopsis sclerophylla powder solution; dissolving 5-30 weight parts of chitosan in an acidic solution to obtaina chitosan solution; mixing the gelatinized castanopsis sclerophylla powder solution and the chitosan solution to obtain a stock solution; mixing the stock solution, 5-8 weight parts of an emulsifyingagent, 5-15 weight parts of a wetting agent, 0.1-3 weight parts of a preservative, 0.1-5 weight parts of a pH value regulator and 0.1-0.4 weight part of an essence, moulding, drying and uncovering afilm. The preparation method is simple and easy to operate, and a finished product is good in quality; the mask prepared with the preparation method uses environment-friendly, mild and non-irritant raw materials, has relatively good antioxidant and bacteriostatic effects, and is conductive to discharge of facial cosmetic residues.

The invention provides an electromagnetic-control-based automatic closing device for refrigerators, and relates to the technical field of household appliances. The electromagnetic-control-based automatic closing device for the refrigerators comprises a box body, the inner wall of the right side of the box body is fixedly connected with an electromagnet I, the inner wall of the box body is movablyconnected with a sleeve rod, the inner wall of the bottom of the sleeve rod is fixedly connected with an electromagnet II, the bottom wall of inside of the sleeve rod is fixedly connected with a spring I, and the top of the spring I is fixedly connected with a movable electric block. According to the electromagnetic-control-based automatic closing device for the refrigerators, through cooperativeuse of the electromagnet I and the electromagnet II, when a door body is opened, the movable electric block is electrically connected to a conductive block, at the moment, the electromagnetic II is inthe energized state and produce magnetism same as that of the left side of a magnetic plate, the magnetic plate receives the repulsive force and drives a movable rod to contract to the inner side ofthe sleeve rod, and the magnetism on the right side of the magnetic plate is opposite to the magnetism on the left side of the electromagnetic I, the magnetic plate is attracted to the top, the effectof automatically closing the door is achieved, it is effectively guaranteed that the box door is in a closed state, and the service life of the refrigerator is prolonged.

The invention discloses an ore raw material classifying pulverization treatment device. The ore raw material classifying pulverization treatment device comprises a feeding pipe, a connecting piece, aconveying frame, discharge pipes, a first-stage pulverization bin, connecting pipes, a second-stage pulverization bin and a third-stage pulverization bin; the feeding pipe is welded above the conveying frame through the connecting piece; the third-stage pulverization bin is welded above the conveying frame through the connecting piece; the upper part of the third-stage pulverization bin communicates with the second-stage pulverization bin through the connecting pipe; the upper part of the second-stage pulverization bin communicates with the first-stage pulverization bin through the connectingpipe; and one side of the feeding pipe correspondingly communicates with the first-stage pulverization bin, the second-stage pulverization bin and the third-stage pulverization bin through the weldeddischarge pipes. With the adoption of the device, the effect of classifying pulverization treatment on an ore material is achieved, leveling operation is carried out on the material after being pulverized, and working noises generated by the device are reduced, so that the working efficiency of the device is improved further.