46 results about "Impact mill" patented technology

The utility model discloses a horizontal impact mill crushing disc which comprises a base, the top of the base is fixedly connected with a cylinder, the top of the base is further fixedly connected with a transmission device through a rack, the output end of the transmission device is arranged in the cylinder and is provided with a crushing assembly, the other side of the cylinder is fixedly provided with a grading device, and the grading device is provided with a crushing assembly. Due to the arrangement of the flow drainage holes and the flow guide plates on the crushing disc and the flow guide effect of the flow guide plates, when the crushing disc rotates at a high speed, the pressure of the circle center part of the crushing disc is lower than that of the outer circumference in the radius direction, and the crushing disc rotates at a high speed. According to the utility model, one part of air entering the crushing area is led in from the drainage holes, the total air volume is drained, the airflow speed of the crushing area is reduced, the retention time of materials in the crushing area is prolonged, and unqualified solid material particles are easier to return to the crushing area to be continuously crushed under the flow guide action of the flow guide plate, so that the crushing efficiency is improved.

An enhanced operating comfort is to be achieved in a rotor part of an impact mill with a plurality of rotor tool blades detachably attachable to a blade attachment plate. This is achieved by recessing a spacer recess out of each rotor tool blade, recessing a blade holding recess and a plate spacer recess out of the blade attachment plate at each blade position, and having one spacer per rotor tool blade that can be held rotatably in the spacer recess and fixed in the plate spacer recess. An impact bead is arranged circumferentially at the upper edge of spacer, and each blade holder fixes a rotor tool blade to the blade attachment plate, and hence interacts with the spacer to prevent a movement by the rotor tool blade parallel and perpendicular to the longitudinal axis.

The invention relates to the technical field of powder material processing, and discloses an inert gas protected micro-powder impact mill system which comprises a crushing and grading module, an inert gas circulating module, a material closed conveying module and a safety monitoring and regulating module, the crushing and grading module comprises an impact mill and a worm gear grader, and a bottom discharge port of the impact mill is communicated with a top feed port of the worm gear grader through a sealing pipeline; the inert gas circulation module comprises a gas storage tank, an induced draft fan, a pulse type bag-type dust collector and a return air cooler, a gas outlet of the gas storage tank is in sealed connection with a gas inlet of the induced draft fan through a first communicating pipe with a control valve, and a gas outlet of the induced draft fan is communicated with a gas inlet of the impact mill through a second communicating pipe. By constructing a complete inert gas closed circulation loop and combining with a safety monitoring regulation and control module of the integrated control system, potential safety hazards caused when flammable, explosive and oxidizable materials are processed by an existing common impact mill are effectively solved.

The invention discloses a method for simultaneously preparing low-molecular-weight algin and fucoidin, and belongs to the field of food processing. The multi-dimensional swing type high-energy nano impact mill is adopted, through rapid multi-dimensional swing type movement of the tank body, irregular movement is increased, huge impact force is generated, the movement track of a grinding medium is prolonged, impact energy is improved, impact blind spots are reduced, and the crushing speed is greatly increased; and preparing algin and fucoidin with low molecular weight. Through a physical crushing technology, the fucoidin does not need to be treated after algin and polysaccharide are extracted and separated, pre-freezing is not needed, and the undaria pinnatifida sporophyll is crushed and extracted by using a multi-dimensional swing type high-energy nano impact mill, so that the method is environment-friendly, safe and efficient; and compared with known ultrasonic and infrared technologies, the method has the advantages of higher yield, simple process, wide application range and the like, and is suitable for preparing low-molecular-weight algin and fucoidin from various sources.

The invention relates to a direct drive type impact mill which comprises a machine shell, a pump drainage pipe is outwards arranged in the middle of the top of the machine shell, and a grading wheel is rotationally installed at the feeding end of the pump drainage pipe; the material crushing assembly comprises a grinding ring installed in the middle of the machine shell, a material crushing disc is arranged on the inner side of the grinding ring, a plurality of crushing hammer heads are evenly distributed and fixedly connected to the periphery of the material crushing disc, and material distributing plates connected to the crushing hammer heads are fixedly connected to the material crushing disc; the driving mechanism comprises a material crushing motor, an output shaft of the driving mechanism is in transmission connection to the center of the material crushing disc, and the output shaft is rotationally mounted on a shell of the material crushing motor through a plurality of magnetic suspension bearings; the feeding assembly comprises a material guiding cover, a feeding pipe is installed on the material guiding cover in a communicating mode, a material collecting cover is arranged in the center of the material crushing disc, and the bottom of the material collecting cover and the material crushing disc are arranged in a spaced mode. According to the invention, the over-temperature problem of the bearing for installation can be effectively overcome, and the transmission amount of vibration to the material crushing motor can be reduced, so that the material crushing motor is integrally integrated in the shell to directly drive the material crushing disc.

A single- or multi-stage mechanochemical reactor (1) according to Figure 1, selected from the group consisting of ball mills, attritor ball mills, vibrating ball mills, resonant acoustic mixers, hammer mills, impact mills, pin mills, cutting mills, jet mills and twin-shaft extruders, equipped with a self-regulating thermal management system for a temperature range of -195°C to 1000°C, wherein - the self-regulating thermal management system comprises at least one heat pipe (2) and / or at least one flat heat pipe (3) and at least one heat source (4) and at least one heat sink (5) which are in thermally conductive contact with each other, - that at least one heat pipe (2) and / or at least one flat heat pipe (3) is or are installed in and / or a static component (1.1) of the reactor (1) and is or are in thermally conductive contact with the material to be ground (1.2) or the material to be ground (1.2) and the grinding media or grinding balls (1.4) in at least one grinding chamber (1.3) of the reactor (1) and - the static component (1.1) serves as a heat source (4) or as a heat sink (5) for the at least one heat pipe (2) and / or the at least one flat heat pipe (3); as well as its use in the fields of chemistry, biochemistry, nanotechnology, pharmacy, biology and microbiology, and environmental technology.

The invention relates to a laboratory mill for grinding material, in particular designed as a cutting mill, impact mill, disc mill, knife mill, impact mill, centrifugal mill, rotor mill, rotor high-speed mill or mortar mill, comprising: a grinding mechanism (4) with a grinding mechanism housing (6) which defines a grinding chamber (18), and with a grinding mechanism rotor (16) which is rotatably driven in the grinding chamber (18) to grind the material to be ground with the grinding mechanism rotor (16) in the grinding chamber (18), wherein the grinding mechanism housing (6) has a material filling opening (26) which leads into the grinding chamber (18) in order to introduce the material to be ground from the outside through the material filling opening (26) into the grinding chamber (18), a drive motor for driving the grinding rotor in the grinding chamber (18), a grinding material feed hopper (28) which has a grinding material feed cone (30) and a funnel neck (32), wherein the grinding material feed hopper (28) is attached to the laboratory mill and the funnel neck (32) opens into the grinding material feed opening (26), such that the grinding material can be filled into the grinding material feed cone (30) and passes through the funnel neck (32) and the grinding material feed opening (26) into the grinding chamber (18), while the grinding rotor (16) rotates in the grinding chamber, a grinding material filling plunger (40) that can be inserted into the grinding material filling hopper (28), wherein the grinding material filling plunger (40) has a grinding material filling channel (50) through which the grinding material can be filled into the grinding chamber (18) when the grinding material filling plunger (40) is inserted into the funnel neck (32).

The utility model discloses a staged impact mill with a dust falling function, and relates to the technical field of impact mills, in particular to the staged impact mill with the dust falling function, which comprises a shell, a support frame is arranged in the shell, a protective box is arranged in the middle of the support frame, a first motor is arranged in the protective box, and a second motor is arranged in the protective box. A connecting shaft rod is arranged at one end of an output shaft of the first motor, a first through hole is formed in the protection box, a limiting bearing is arranged in the first through hole, a rotating sleeve is arranged in the limiting bearing, a sealing bearing is arranged in the rotating sleeve, and the connecting shaft rod is arranged in the sealing bearing. According to the grading type impact mill with the dust falling function, through cooperative arrangement of the first motor, the connecting shaft rod, the rotating sleeve, the transmission gear, the first crown gear, the second crown gear, the filtering lining plate, the punching disc and the crushing roller, the grading type impact mill with the dust falling function has the effects of optimizing the grinding structure and improving the grinding speed.

The invention discloses a recycled aggregate pretreatment method for 3D printing full-recycled concrete, which comprises the following steps: step 1, crushing and sieving treatment, step 2, jet cracking treatment, step 3, centrifugal impact treatment, step 4, interface modification treatment, and step 5, dynamic grading treatment. The device comprises a crushing mechanism, a jet impact mechanism, a centrifugal impact mill and a modification treatment mechanism, according to the invention, the recycled concrete is treated by a three-order treatment method of high-pressure jet flow, centrifugal impact grinding and microwave activation, so that the porosity of the recycled aggregate is effectively reduced, the interlayer bonding strength of the aggregate is improved, and the problems existing in the existing simple crushing treatment of the recycled aggregate are solved; meanwhile, microwave activation and biomimetic mineralization are combined to treat the recycled aggregate, and double breakthrough of the performance and economical efficiency of the aggregate is achieved.

The utility model discloses an anti-drop impact mill hammerhead mounting structure, which belongs to the technical field of impact mills and comprises a circular cutter head and a hammerhead, the hammerhead is of a cuboid structure and is divided into a hammerhead end and a hammerhead tail, the hammerhead tail is provided with two inverted-cone-shaped through holes, the cutter head is provided with a mounting groove, the reverse side of the mounting groove is provided with a counterbore, and the counter bore is arranged in the mounting groove. The two sides of the hammer head are in interference fit with the hammer head installation grooves, and the hammer head is fixed to the circular cutter head through an inverted-cone-shaped inner threaded pipe and a reverse fastening bolt. The utility model has the advantages that even if the hammerheads are seriously abraded, serious accidents caused by falling of the hammerheads in the high-speed rotation process of the rotor disc can be avoided, so that equipment can run more stably and safely.

The invention relates to the technical field of ultrafine crushing, in particular to a crushing hammer head of an aggregate type impact mill and a crushing disc provided with the hammer head, and the crushing disc comprises a disc body and a plurality of hammer heads fixed on the disc body. The hammer head is an aggregate type impact mill crushing hammer head and comprises a body, a slope windward side and a windward vertical side which are sequentially connected are arranged in front of the body, the slope windward side is located in front of the windward vertical side, and the height of the windward vertical side is larger than that of the slope windward side; the upper part of the windward vertical surface forms a corner impact area. The rear surface of the body is an arc-shaped curved surface in smooth transition; and the position closer to the rear end of the body on the arc-shaped curved surface is lower. The hammer head can obviously reduce air in gas-solid two-phase flow participating in crushing collision in the using process, effectively reduces generation of vortexes, has the advantages of being high in crushing efficiency, long in service life, efficient, energy-saving and the like, and reduces energy consumption per ton of products of an impact mill.

The utility model belongs to the technical field of graphite material processing equipment, and particularly relates to a grading impact mill for narrowing the particle size distribution of a graphite material. The grading impact mill comprises a tank body, a feeding hole is formed in the upper end of the tank body, and a discharging pipe is arranged at the lower end of the tank body; a buffer ring structure, a scattering structure and a screening structure are arranged in the tank body from top to bottom; the buffering ring structure comprises a fixing ring and a plurality of transverse rods which are arranged in the fixing ring and distributed in the radial direction. Through the arrangement of the buffer ring structure, raw materials falling to the scattering structure are pre-scattered and decelerated, so that the abrasion to the scattering structure is reduced, and the service life of the device is prolonged.

The utility model discloses a hammerhead mounting structure for an impact mill. The hammerhead mounting structure comprises a rotating disc, a plurality of mounting assemblies are uniformly distributed on the top surface of the rotating disc, each mounting assembly comprises a clamping groove formed in the top surface of the rotating disc, a limiting groove is formed in the inner side of each clamping groove, and a bayonet socket is inserted into each clamping groove; wherein a vertical cavity is formed in the upper portion of the middle of the bayonet socket, four movable cavities which are evenly distributed are formed in the side edge of the bottom of the vertical cavity, sliding grooves which are evenly distributed are formed in the lower portion of the middle of the bayonet socket, the sliding grooves communicate with the movable cavities, and a rotary knob is rotationally installed at the top of the bayonet socket; the bayonet socket can be quickly disassembled and assembled, later maintenance is facilitated, the size of the bayonet socket is far larger than that of a traditional bolt, the bayonet socket is difficult to deform due to long-term impact, the rotating column does not play a direct fixing role, the bayonet socket is difficult to deform, the stability of the structure is greatly improved, and the service life of the structure is greatly prolonged.

The present application relates to the technical field of superfine crushing, and particularly relates to a set material type impact mill crushing hammer head and a crushing disc provided with the hammer head, the crushing disc comprising a disc body and a plurality of hammer heads fixed on the disc body. The hammer head is a set material type impact mill crushing hammer head, comprising a body, a ramp windward surface and a windward vertical surface connected in sequence are arranged on the front face of the body, the ramp windward surface is located in front of the windward vertical surface, the height of the windward vertical surface is higher than that of the ramp windward surface; the upper part of the windward vertical surface forms an angular impact area. The rear face of the body is a smooth transition arc surface; the height of the arc surface is lower as it is closer to the rear end of the body. The hammer head can obviously reduce the air in the gas-solid two-phase flow to participate in the crushing collision, effectively reduce the generation of vortex, has the advantages of high crushing efficiency, long service life, high efficiency and energy saving, and reduces the energy consumption of the impact mill per ton of product.

An impact mill (10) has an inlet (12) for material to enter the mill, an impact mechanism (16, 50) arranged to rotate about a rotation axis and being operable to pulverise the material after entering through the inlet, and an outlet (154) for discharge of pulverised material. Blockage sensors (Bj), vibration sensors V, torque sensors Tn, temperature sensors and proximity sensors may be selectively incorporated into the mill.

The invention relates to an impact mill, in particular an impact classifier mill (1), for breaking compacted or agglomerated particulate material, such as (cocoa) cake, chunks or kibbles, to smaller particles, preferably to a powder, the mill comprising a rotary beater comprising a shaft (2) carrying impact elements (3,5), an impact chamber (5) surrounding the beater, preferably concentrically, and having an at least substantially cylindrical, conical and / or curved impact wall (6), and a permanent magnet motor (20) for rotatably driving the beater.

The utility model discloses an impact mill hammer head with alloy sheets welded on the periphery, and relates to the technical field of crushing equipment. Comprising a smashing disc, a plurality of evenly-arranged hammer heads are arranged on the outer edges of the upper surface and the lower surface of the smashing disc in the circumferential direction, the hammer heads arranged on the upper surface and the lower surface of the smashing disc are evenly arranged in a staggered mode along the axis of the smashing disc, the smashing disc is fixedly sleeved with a stator lining plate, and the smashing disc is rotationally arranged in an inner cavity of the stator lining plate along the axis of the stator lining plate. The hammer head is driven to collide with materials at an extremely high linear speed, the materials are subjected to brittle rupture crushing, meanwhile, shearing force generated by matching of the end, close to the stator lining plate, of the hammer head and the stator lining plate can crush the materials, the first alloy pieces are welded and fixed to the two ends of the hammer head welding body, and the first alloy pieces can improve the abrasion resistance and toughness of the hammer head; and after one end of the hammer head is worn, the other end of the hammer head is fixed by changing the position through the fixing bolt, so that the service life of the hammer head is prolonged.

The utility model discloses a vertical impact mill crushing disc which comprises a rack, a barrel is fixedly connected to one side of the top of the rack, a transmission device is installed at the bottom end in the barrel, a crushing disc is connected to the top of the transmission device, and a driving mechanism which is connected with the transmission device and drives the crushing disc to rotate is arranged on the rack. A plurality of hammer heads are fixedly installed on the outer wall of the smashing disc at equal intervals in the circumferential direction, a tooth-shaped stator lining plate is fixedly connected to the position, corresponding to the smashing disc, of the inner wall of the barrel, and an air inlet is formed in the position, below the smashing disc, of the barrel. When the crushing disc rotates at a high speed, radial eddy current is not generated any more, circulation of fine powder particles in a crushing area is eliminated, over-crushing is avoided, the distribution width of the particle size of a product is narrowed, meanwhile, abrasion of the top face of the crushing disc is reduced, and the service life of the crushing disc is prolonged.

The present invention discloses a dual-rotor impact mill, including an inner rotor motor, a housing, a frame, a central feed V-belt pulley, a feed port, a central vertical shaft, a material distribution cone, an upper support, an inner rotor, an outer rotor, a safety cover, an outer rotor motor, a material discharge port, a positioning locking block, a positioning hinge bolt, and a thin oil supply system, a bearing temperature rise remote monitoring system, and a central vertical shaft deflection remote monitoring system. The central vertical shaft is vertically fixed in the center of the frame, and its top end is connected to a material distribution cone by an internal thread, and its upper end is positioned and fixed by a support ring and a locking round nut in the upper support, and its lower end is fixed to the frame by a positioning locking device. Through the structural design of the positioning locking device, when the dual-rotor impact mill of the present invention is running at high speed and heavy load, the center position of the central vertical shaft can be effectively controlled, and it is also convenient to replace the inner rotor V-belt.

This invention discloses a starch-plant polyphenol cocrystal, its preparation method, and its application in functional foods, relating to the field of functional food technology. The preparation method includes: S1, mixing starch and plant polyphenols uniformly to obtain a mixture; S2, adding the mixture to a low-temperature impact mill, adding grinding media, and introducing an inert gas into the low-temperature impact mill to subject the mixture to impact treatment, obtaining a cocrystal complex; S3, purifying and freeze-drying the cocrystal complex to obtain the starch-plant polyphenol cocrystal. This invention innovatively uses wheat starch and proanthocyanidins to form a cocrystal structure, resulting in a simpler and more efficient preparation process, eliminating the need for complex physical field treatments or multiple freeze-drying steps, and maximizing the preservation of polyphenol activity. The cocrystal structure endows the carrier with excellent sustained-release performance, enabling long-term release of polyphenols in functional food applications, solving the problems of unstable loading rates and poor sustained-release effects in existing technologies.

A system and method for generating a pozzolanic powder material, or ground glass pozzolan, also referred to as GGP, from silica-based waste materials (recycled glass) wherein at least 90% (±2%) of the pozzolanic particles of the GGP have a particle size of about 20 µm (±2 µm) and / or less. In an embodiment the powder material may have a mean pozzolanic particle size of 5 µm ± 2µm). The system may include an impact mill that incorporates a conical inner liner and corresponding rotor that includes grinding elements; and the inner liner and grinding elements are composed of a ceramic-metallic material. A cementitious mixture according to aspects of the invention including a combination of OPC and GGP may comprise between about 10% to about 25% by weight of GGP wherein least 90% (±2%) of the pozzolanic particles of the GGP have a particle size of about 20 µm (±2 µm) and / or less.

A dual action impact mill (1) comprises: a rotor arrangement (2) having a first side (21) and a second side (13) opposite the first side (21); a first drive shaft (14) extending outwardly from a second side (13) of the rotor arrangement (2), the first drive shaft (14) cooperating with at least one ring of the rotor arrangement (2); a second drive shaft (15) extending outwardly from the first side (21) of the rotor arrangement (2), the second drive shaft (15) cooperating with at least one further ring of the rotor arrangement (2); at least one actuator cooperating with at least one of the drive shafts (14, 15); a feed opening (16); and a discharge part (17). The rotor arrangement (2) is configured to be driven from opposite sides (13, 21) of the rotor arrangement (2).

The utility model discloses a horizontal impact mill with a good crushing effect, and relates to the technical field of horizontal impact mills. The impact mill comprises an impact mill body and a pre-crushing structure, the pre-crushing structure comprises a crushing box, the top of the crushing box is fixedly connected with a motor, the output end of the motor penetrates into an inner cavity of the crushing box and is fixedly connected with a grinding roller, and the inner cavity of the crushing box is fixedly connected with a flow guide shell; electric telescopic rods are fixedly connected to the two sides of the bottom of an inner cavity of the smashing box correspondingly, the tops of the electric telescopic rods extend to the top of the flow guide shell, and a grinding shell is fixedly connected between the tops of the two electric telescopic rods. Raw materials needing to be smashed are conveyed into the inner cavity of the smashing box through the feeding pipe, then the output end of the motor drives the grinding roller to rotate, the grinding roller is matched with the grinding shell to smash the raw materials in the rotating process, and therefore the effect of pre-smashing the raw materials needing to be smashed is achieved.

The utility model discloses an impact mill gear ring dismounting structure which comprises a box body, a dismounting opening is formed in the side wall of the box body, a sealing plate is hinged to the side wall of one side of the dismounting opening, a locking plate is arranged on the side wall of the other side of the dismounting opening, the sealing plate and the locking plate are fixedly connected through a bolt, a supporting ring is fixedly connected to the inner wall of the box body, and the supporting ring is fixedly connected to the inner wall of the box body. A grinding disc is arranged in the supporting ring, a supporting cylinder is arranged on the upper portion of the supporting ring, a limiting ring is fixedly connected to the outer side wall of the supporting cylinder, a rolling groove is formed in the outer side wall of the limiting ring, a plurality of balls are arranged in the rolling groove in a rolling mode, and a gear ring assembly is rotationally arranged on the periphery of the limiting ring. By arranging a sealing plate, a dismounting opening and a gear ring assembly, the dismounting opening is opened, locking of the two gear ring unit blocks is relieved, the gear ring unit blocks are taken out of the dismounting opening, dismounting is convenient, and maintenance is convenient; and the friction force of rotation of the gear ring is greatly reduced through the arranged balls, so that the gear ring rotates more smoothly, abrasion is reduced, and the service life of the gear ring is prolonged.

Laboratory mill (1) for grinding material, in particular designed as a cutting mill, impact mill, disc mill, knife mill, impact mill, centrifugal mill, rotor mill, rotor high-speed mill or mortar mill, comprising: a grinding mechanism (4) with a grinding mechanism housing (6) which defines a grinding chamber (18), and with a grinding mechanism rotor (16) which is rotatably driven in the grinding chamber (18) to grind the material to be ground with the grinding mechanism rotor (16) in the grinding chamber (18), wherein the grinding mechanism housing (6) has a material filling opening (26) which leads into the grinding chamber (18) in order to introduce the material to be ground from the outside through the material filling opening (26) into the grinding chamber (18), a drive motor for driving the grinding rotor (16) in the grinding chamber (18), a grinding material feed hopper (28) which opens into the grinding material feed opening (26), such that the grinding material can be filled into the grinding material feed hopper (28) and passes through the grinding material feed hopper (28) and the grinding material feed opening (26) into the grinding chamber (18), while the grinding rotor (16) rotates in the grinding chamber (18), a grinding material filling plunger (40) that can be inserted into the grinding material filling hopper (28), wherein the grinding material filling plunger (40) has a grinding material filling channel (50) through which the grinding material can be filled into the grinding chamber (18) when the grinding material filling plunger (40) is inserted into the grinding material filling hopper (28), wherein the grinding material filling plunger (40) has at least a section of a screw section (52) axially, in which the grinding material filling channel (50) runs in a helical or spiral manner in the grinding material filling plunger (40).

Device for the treatment of valuable materials containing artificially produced mineral fibres, with - a recyclable material feed (10) for feeding a recyclable material stream (S) to a shredding device (12) in which the recyclable materials (11) are shredded, - an impact reactor (2) arranged downstream of the comminution device (12) in the flow direction of the valuable material stream (S) and a final product outlet (14, 14') arranged downstream of the latter; characterized in that - that the comminution device (12) is designed as a fiberizing device in which the mineral fiber portions of the valuable material stream (S) are fiberized, - that the impact reactor (2) has a material inlet (24), at least one impact mill (25), a coarse material outlet (26) and a fine material outlet (28), wherein the fine material outlet (28) is arranged below the at least one impact mill (25) in the direction of gravity, - that between the fine material outlet (28) of the impact reactor (2) and the product outlet (14') a heating device (3, 3') is provided for the thermal treatment of the fine material produced in the impact reactor (2), which heating device can be flowed through by the fine material stream (F) emerging from the impact reactor (2) and for this purpose has a fine material inlet (34, 34') and a fine material outlet (37, 37') and a heating chamber (35, 35') located therebetween with an electric heater and / or at least one burner (36, 36') which is designed to generate at least one open flame (38, 38'), and - that the heating chamber (35, 35') has or forms a calcination chamber or a sintering chamber as the heating chamber.

The application discloses a method for preparing low-molecular-weight fucoidan by supermicro grinding, and belongs to the field of food processing. The method directly supermicro grinds fucoidan by using a multi-dimensional swing high-energy nanometer impact mill, and effectively reduces the molecular weight of the fucoidan. Compared with other methods for preparing low-molecular-weight fucoidan, the method adds sodium chloride, mixes and spray-dries to form a hollow structure with hardness and brittleness, the fucoidan is uniformly distributed in the hollow structure, the sugar chains of the fucoidan are broken when the structure collapses and is ground, and thus the molecular weight of the fucoidan is reduced. The method does not need to use fucoidan-degrading enzymes and other chemical reagents, is environmentally friendly, safe and efficient, and has the advantages of uniform product, higher yield, simple process, wide application range and the like compared with known chemical and enzymatic hydrolysis methods, and is suitable for preparing low-molecular-weight polysaccharides of other polysaccharide macromolecules except fucoidan.

The utility model discloses an impact mill, which belongs to the technical field of powder equipment and comprises a feeding pipe, a main machine shell, a main machine shaft, an impact disc, an air inlet volute, an air inlet, a lining plate, a grading wheel and a grader neck, the main machine shell is provided with a feeding port, the feeding pipe is connected with the feeding port, and the impact disc is arranged on the shaft end face of the main machine shaft. The air inlet volute is arranged in the center of the left end face of the main machine shell, the air inlet is formed in the outer circle of the air inlet volute, a shaft hole is formed in the axial center of the air inlet volute, the main machine shaft penetrates through the shaft hole and is arranged in the axial center of the air inlet volute, and the axial center line of the air inlet volute coincides with the axial center line of the main machine shaft. A circular seam is arranged between the inner wall of the air inlet volute and the outer circle of the main machine shaft, the lining plate is arranged on the left side of the inner circle of the main machine shell, the grading wheel is arranged on the right side of the inner circle of the main machine shell, and the grading machine neck is arranged on the right side of the grading wheel. According to the utility model, airflow entering from the air inlet is uniformly distributed in the main machine shell, so that the crushing efficiency is favorably improved.

The invention relates to the field of flour mills, in particular to an impact type flour mill for grain processing, and solves the problems that impact cutting angles are the same, abrasion is large and long-term efficient flour milling is not facilitated due to the fact that impact components rotating at a high speed in an existing impact type flour mill for grain processing cannot be adjusted. The grinding machine comprises a base, a driving motor, a barrel cover, a mounting disc, a rotating shaft barrel, a grinding fluted disc, an I-shaped disc, a screen barrel, a short hammer head, a rotating frame, a connecting frame, a long hammer head, clamping frames, a driving assembly, a sliding plate frame, a first steel wire brush, an extension assembly, a frame, a circular ring and a steel wire brush ring, the rotating shaft barrel is further provided with a linkage assembly, and the linkage assembly is used for driving the rotating shaft barrel to slide in the clamping frames when the linkage assembly is driven to slide in the clamping frames. The circular ring can be driven to axially slide along the grinding barrel. The device can flexibly adjust the angle of impacting a grinding part, improves the grinding efficiency and effect, can reduce abrasion, and can discharge materials in time and operate stably.

The invention relates to the technical field of asphalt preparation, in particular to a preparation system and method of rock asphalt powder. The crushing part comprises an alligator crusher with a feeding bin, a two-stage crusher and a drum screening machine; a feed port of the two-stage crusher is connected with a discharge port of the alligator crusher, a discharge port of the two-stage crusher is connected with a feed port of the drum screening machine, and a secondary crushing discharge port of the drum screening machine is connected with the feed port of the two-stage crusher; the dewatering part comprises a drum dryer of which the feeding end is connected with a screening discharge hole of the drum screening machine; the grinding part comprises a feeding hole and a gas shunting impact mill connected with the discharging end of the drum-type dryer; and a cooling unit is arranged between an air inlet and an air outlet of a cooling cavity of the gas shunting impact mill. The cooling mode of the air cooling unit is not limited by seasonal temperature, the cooling speed is higher, temperature distribution is more uniform, rock asphalt powder can be effectively prevented from denaturation due to high temperature, and the stability of product quality is guaranteed.