76results about How to "Guaranteed grinding efficiency" patented technology

The utility model discloses a food additive pretreatment box, which comprises a base, a crushing mechanism is arranged above the base, the crushing mechanism comprises a mounting frame, the mounting frame is welded at two ends of the base, a treatment tank is arranged on one side of the mounting frame, a positive and negative rotation motor is arranged on the outer wall of the mounting frame, and the positive and negative rotation motor is connected with the crushing mechanism. A filter plate is arranged at the top of the treatment tank, a motor A is arranged above the treatment tank, a plurality of crushing blades are arranged at the rotating end of the motor A, and a grinding mechanism is arranged below the crushing mechanism; a forward and reverse rotation motor is arranged, the forward and reverse rotation motor drives a treatment tank to swing in a reciprocating mode under the supporting effect of a mounting frame, a motor A drives a plurality of smashing blades to rotate to smash food additives, smashed food additive particles are screened through a filtering plate under the swinging effect of the treatment tank, and the uniformity of the smashed particles is guaranteed; therefore, the grinding time of food additive particles is shortened, and the grinding efficiency of food additives is guaranteed.

The invention belongs to the technical field of grinding equipment, and particularly relates to a full-automatic valve grinding machine which comprises a base and a control box fixedly connected to the right side wall of the base, a PLC is fixedly connected to the right side wall of the base, and a clamping mechanism is fixedly connected to the upper side wall of the base. When the grinding machine is used for grinding the sealing door of the valve plate, a proper amount of grinding paste can be automatically dispensed and stricken on the grinding surface of the valve plate, the grinding quality of the valve plate is guaranteed, meanwhile, waste of the grinding paste is avoided, meanwhile, an operator does not need to manually smear and stricken the grinding paste, the workload of the operator is reduced, and the working efficiency is improved. According to the grinding machine, when the grinding material is used for grinding the grinding surface of the valve plate and the grinding surface of the valve plate, proper extrusion force can be kept between the grinding material and the grinding surface of the valve plate, the grinding performance of the valve plate is guaranteed, meanwhile, after the grinding material is consumed to a certain degree, an operator can be reminded to replace the grinding material in time, and the grinding quality of the grinding machine is further guaranteed.

The invention relates to a drill tip rear tool face grinding method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining a chisel edge curve; the chisel edge curve is used for representing a curve where a chisel edge is located; acquiring a circumferential intersecting line; the circumferential intersecting line is used for representing the intersecting line of the drill tip rear tool face and the drill bit outer cylindrical face; intersecting line points on the circumferential intersecting line respectively correspond to different curve points on the chisel edge curve; determining a grinding pose when the outer edge of the grinding tool passes through the corresponding intersection point and the curve point; and the grinding tool is controlled to grind the rear tool face of the drill tip according to the grinding pose. By adopting the method, the grinding efficiency of the rear tool face of the drill tip can be improved.

The invention relates to the technical field of optical fiber sensors, and provides an optical fiber grinding method and a grinding processing device.An optical fiber FP sensor is driven by a three-axis displacement mechanism and a grinding disc to move under clamping of a designed optical fiber clamping mechanism, and optical fiber grinding work is carried out; the upper computer electrically controls the three-axis displacement mechanism and the grinding disc, in the grinding process, the broadband light source, the optical circulator and the spectrograph form a demodulation system to detect optical fiber spectrum information and convert the optical fiber spectrum information into electric signals, the electric signals are transmitted to the upper computer, and the upper computer monitors the grinding thickness in real time through a demodulation algorithm. And communication with the three-axis displacement mechanism and the grinding disc is established through a hardware module, and then actions of the three-axis displacement mechanism and the grinding disc are controlled according to the grinding thickness detection information. According to the method, a demodulation algorithm is utilized, online monitoring of the cavity length and thickness in the grinding process is achieved through a spectral signal detection technology, and the machining precision and efficiency can be guaranteed.

The invention belongs to the field of wafer processing, and particularly relates to a wafer processing rotary adsorption platform which comprises a fixed base. The end part of the fixed base is fixedly connected with a mounting seat; a driving part is fixedly connected to the inner wall of the middle part of the mounting seat; the output end of the driving part is fixedly connected with a workbench; a vacuum pump is mounted in the workbench; the output end of the vacuum pump is fixedly connected with a plurality of connecting pipes; an adsorption table is slidably connected to the inner wall of the workbench, a plurality of adsorption holes are formed in the adsorption table, and the multiple adsorption holes communicate with the multiple connecting pipes; the extrusion plate extrudes gas in the gas cylinder after the rotary adsorption platform is powered off, the gas is blown out by the spray head to drive the workbench to continue to rotate, and when the shifting piece continues to rotate along with the workbench to approach the sliding block, the second magnetic block and the first magnetic block attract each other through magnetic force to assist in driving the powered-off workbench to return to the zero position. The situation that the rotary adsorption platform loses the zero position due to power failure is reduced, and the grinding machining efficiency of the wafer after being powered on is guaranteed.

The invention relates to the technical field of sand mills, and particularly discloses a cleaning system for a sand mill and the sand mill.The cleaning system comprises a detection module used for detecting whether a screen located in a grinding cylinder is blocked or not in real time when the grinding machine works and outputting a detection result; the cleaning module is used for cleaning the screen when the screen is blocked; and the control module controls the cleaning module to execute the first cleaning mode when the grinding machine works. According to the sand mill, the blockage condition of the screen can be detected in real time in the grinding process through the detection module, when blockage occurs, the cleaning module can be controlled to work through the control module, the screen is cleaned in real time, and therefore the feeding flow does not need to be reduced, cleaning can be conducted when the sand mill works, shutdown operation is not needed, and the grinding efficiency is guaranteed.

The invention belongs to the technical field of spot welding machines, and particularly relates to hardware fitting manufacturing equipment which comprises a bottom plate and a rack arranged on the upper side wall of the bottom plate, the rear side wall of the rack is fixedly connected with an operation table, a PLC and a buzzer, and the front side wall of the rack is fixedly connected with a supporting seat. A supporting seat is fixedly connected to the left side wall of the rack, an air cylinder is fixedly connected to the lower side wall of the supporting seat, a connecting seat is fixedly connected to the upper side wall of the bottom plate, electrode seats are fixedly connected to the upper side wall of the connecting seat and the moving end of the air cylinder, electrode bodies are inserted into the electrode seats, and the placing plate is fixedly connected with the left side wall of the rack. When the spot welding machine works for a long time and pits are formed in the end face of the electrode due to pressure friction and local overheating, the situation can be automatically detected, repairing is conducted in time, and therefore the problem that the welding quality of the spot welding machine is affected due to the fact that the electrode with the pits is continuously used, and the strength of welding spots is not uniform is solved.

The invention discloses a fiberboard polishing and grinding device and a using method thereof, and relates to the field of fiberboard polishing and grinding devices. According to the fiberboard polishing and grinding device and the using method thereof, a transmission frame, a limiting unit, an extrusion unit, a contact unit and a connecting frame are arranged in a sanding machine. According to the fiberboard polishing and grinding device and the using method thereof, the limiting plates make contact with and extrude the two sides of the fiberboard, under the action of the limiting plates, the fiberboard is limited, the situation that the fiberboard deviates in the polishing and grinding process, the polishing and grinding effects of different areas are different is avoided, the grinding effect is better adjusted by adjusting the compression degree of the guide rods, and the polishing and grinding efficiency is improved. The two connecting frames have a height difference, so that the two grinding wheels can be in contact with the fiberboard conveniently, rough grinding is performed through the front grinding wheel, fine grinding is performed through the rear grinding wheel, and the grinding effect and the grinding efficiency are guaranteed.

The invention belongs to the technical field of polishing and grinding, and discloses a spherical shell workpiece polishing and grinding machine which comprises a supporting plate and further comprises a driving motor, and the driving motor is arranged at the top of the supporting plate through a support. A planet carrier in the planetary gear set is fixedly connected with the top of the supporting plate through a support, and a sun gear in the planet carrier is fixed to an output shaft of the driving motor. Through cooperation of a planetary gear set, under driving of the output shaft of the driving motor, the supporting mechanism and the first polishing mechanism are opposite in rotating direction and different in rotating speed, and therefore a spherical shell workpiece located between the second polishing mechanism and the first polishing mechanism generates friction due to the different rotating speeds of the spherical shell workpiece; and the arranged transmission mechanism can drive the first polishing mechanism to do reciprocating motion in the axial direction of the first polishing mechanism in the movement process, so that the workpiece polishing area is changed, no dead angle is generated, and the good polishing effect is achieved.

The invention relates to a crushing and grinding process and device for preparing meal replacement food, and belongs to the technical field of food grinding, and the crushing and grinding device for preparing the meal replacement food comprises a grinding tank, a grinding mechanism, a rolling brush mechanism, a cutting and conveying mechanism and a knocking mechanism. Through cooperative use of the rolling brush mechanism and the grinding mechanism, when a rotating grinding disc in the grinding mechanism rotates to grind food raw materials, the rolling brush mechanism can be driven to work, a first spiral brush rotates while rotating, and a second spiral brush can be driven to rotate; the first spiral brush is used for rolling and brushing powdery food raw materials adhered to the gap between the rotating millstone and the bottom millstone, and the second spiral brush is used for rolling and brushing powdery food raw materials adhered to the gap between the rotating millstone and the top millstone, so that accumulation and adhesion of the powdery food raw materials are avoided, and the grinding efficiency is ensured; and the situation that subsequent raw material grinding is polluted due to adhesion of the powdery food raw materials is prevented, and the quality of the prepared meal replacement food is guaranteed.

The invention discloses a uniform-granularity sand mill, and relates to the technical field of material grinding. The uniform-particle-size sand mill comprises a driving mechanism, a grinding rotor, a sand milling bin, a filter cartridge and a pushing mechanism. The filter cartridge is connected into the sanding bins, a discharging cavity is formed between the sanding bins, the driving mechanism is in transmission connection with the grinding rotor, the grinding rotor extends into the filter cartridge, and the driving mechanism is used for driving a grinding medium and a material to move in the filter cartridge through the grinding rotor so as to grind the material into material particles; and the filtering cylinder is used for allowing material particles reaching the preset particle size to penetrate through, a discharging opening is formed in the sanding bin, and the pushing mechanism is installed in the discharging cavity and used for pushing the material particles in the discharging cavity out of the discharging opening. The uniform-granularity sand mill provided by the invention can realize filtering and discharging of material particles under the condition of ensuring the grinding efficiency, so that the granularity distribution of the material particles is highly concentrated, the granularity uniformity is improved, and the user requirements are met.

The invention discloses a spiral groove grinding wheel of an asymmetric trapezoidal turbulent flow structure and a preparation method, the spiral groove grinding wheel comprises a grinding wheel body, a spiral groove is formed in the grinding surface of the grinding wheel body, and the section of the spiral groove is rectangular; a turbulent flow structure is arranged in the spiral groove, the cross section of the turbulent flow structure is in an asymmetric trapezoid shape, and the bottom edge of the turbulent flow structure is in an arc shape and completely attached to the bottom face of the spiral groove. The turbulent flow structures are distributed at equal intervals in the spiral groove by taking the spiral groove as a guide; the asymmetric trapezoidal turbulent flow structure is additionally arranged on the surface of the spiral groove grinding wheel, the flow characteristic of grinding fluid can be improved, the absorption effect of the grinding fluid on the surface of the grinding wheel is improved, the effective flow of a grinding arc area in the grinding process is increased, and then grinding heat exchange is further enhanced.

The invention relates to the technical field of valve flange machining, and provides an automatic valve grinding machine which comprises a workbench, an edge grinding mechanism, feeding mechanisms, a rotating mechanism, a conveying belt and an electric baffle. The edge grinding mechanism is arranged in the middle of the workbench, and the feeding mechanisms are arranged on the front side and the rear side of the edge grinding mechanism; and rotating mechanisms are arranged in the feeding mechanisms correspondingly, and electric baffles are arranged on the two sides of the middle of the upper end of the conveying belt correspondingly. Through the cooperation of the edge grinding mechanism, the feeding mechanism and the rotating mechanism, when the side edge of the valve flange is ground, the situation that the rough grinding wheel is damaged due to the fact that a large protrusion on the valve flange hits the rough grinding wheel is avoided, the large protrusion can be fully and completely ground away, the rotating speed of the valve flange is increased during accurate grinding, the grinding efficiency is guaranteed, and meanwhile the grinding efficiency is improved. And small burrs on the valve flange can be polished more thoroughly.

The invention discloses a high-precision injection molding machine barrel and a grinding device thereof. The barrel comprises an injection molding connecting barrel, a fixed channel, an injection molding machine barrel, a connecting shaft washer, a fixed screw, a protective shaft sleeve, an injection molding rod piece and an injection molding nozzle, the grinding device comprises a main machine, a working platform located on the main machine and a mounting base located above the working platform. The injection molding connecting machine barrel and the injection molding machine barrel, the connecting shaft ring and the injection molding machine barrel, the connecting shaft ring and the protective shaft sleeve, and the injection molding rod piece and the protective shaft sleeve are of an assembly structure, maintenance is convenient, and use and installation are flexible; the injection molding nozzle is convenient to maintain and replace after long-time use, and the high-precision and high-efficiency injection molding effect of the injection molding machine is improved. Through the arrangement of the inner grinding machine assembly and the outer grinding machine assembly, grinding of the outer wall and the inner wall in the machine barrel grinding process is achieved, the grinding efficiency is guaranteed, and the working efficiency is improved.

The invention discloses a valve fine cone surface grinding machine, comprising a bed, a workpiece spindle assembly, a grinding wheel shaft assembly, and a dressing shaft assembly. An online dynamic balancing device is provided in the grinding wheel shaft assembly, an acoustic wave monitoring device is provided in the dressing shaft assembly, a valve auxiliary support device is provided on one side of the workpiece spindle assembly on the bed and is opposite to the grinding wheel shaft assembly, a valve positioning device equipped with a universal positioning head is provided at a position opposite to the workpiece spindle assembly, a grinding fluid nozzle connected to a grinding fluid booster pump is provided at a position opposite to the valve grinding part, and a fire extinguishing device is provided on the bed, the fire extinguishing device comprises a temperature sensing sensor and a fire extinguishing nozzle whose installation position is opposite to the valve grinding part. The valve fine cone surface grinding machine adopting the invention can maintain the dynamic balancing accuracy of the grinding wheel shaft for a long time, automatically monitor the grinding wheel dressing quality, improve the valve positioning accuracy, reduce the bending deformation of the valve during the grinding process, and has high grinding efficiency and is safe and reliable to use.

The invention relates to the technical field of wafer processing, and particularly discloses a wafer grinding and polishing processing adjusting method based on pressure sensing, and the method comprises the steps: S1, measuring the current initial thickness of a to-be-processed wafer, determining the target thickness of the to-be-processed wafer, and bonding the wafer to a substrate, polishing states of the wafer at different time points can be determined by collecting state parameter data of polishing equipment and the wafer in polishing operation in real time for analysis, when a polishing disc is seriously abraded, the feeding distance of a polishing push rod can be adjusted in real time according to the polishing states of the wafer at different time points, and the polishing efficiency is improved. Therefore, good contact between the polishing disc and the wafer in the whole polishing process is guaranteed, the polishing efficiency and effect are guaranteed, whether the polishing disc needs to be replaced or not can be judged by analyzing the state of the machined wafer, the situation that the polishing disc which is seriously abraded increases the load of polishing equipment is avoided, and the polishing efficiency is improved. And wear and aging of the equipment are accelerated.

The invention relates to the technical field of hardware parts production, and discloses a hardware parts grinding machine and a grinding assembly thereof, wherein the grinding assembly comprises a grinding disc, a clamping assembly is placed on the grinding disc, and the clamping assembly comprises a counterweight block, a retaining ring is clamped on the outer side of the counterweight block, a clamping strip is arranged on the side of the counterweight block, a clamping groove is arranged on the inner side of the retaining ring, the clamping strip is slidably connected in the clamping groove, a gasket is placed inside the retaining ring, a hardware part body is uniformly clamped on the gasket, a limiting shaft is fixedly arranged on the top surface of the counterweight block, and a sleeve tube is fixedly arranged on the top surface of the limiting shaft; in the present invention, an auxiliary spring and a spherical block are arranged, and while the counterweight block presses the hardware part body, the elastic force of the auxiliary spring presses the gasket to keep the gasket flat, thereby preventing the hardware part body from being unable to be tightly clamped with the hardware part body, resulting in serious wear of the hole.

The application relates to the grinding technical field, in particular to a roller grinder for steel processing; the grinder comprises a first bed body, a second bed body fixedly connected to the front side of the first bed body, a three-jaw chuck arranged on the left top side of the first bed body and capable of being driven, a concave slide rail arranged on the right top side of the first bed body, a top base slidingly connected to the concave slide rail, a grinding cavity arranged on the side of the second bed body facing the first bed body, a plurality of grinding wheels sequentially distributed and rotationally connected to the grinding cavity from left to right, a square groove penetratingly arranged on the center of the grinding wheel, a driven hole penetratingly arranged on the left inner wall of the grinding cavity, the number of the grinding wheels in use is adjusted by controlling the left rod to synchronously slide with the top base, the combined length of the grinding wheels in use is matched with the length of the rotating surface of the roller, meaningless rotation of the grinding wheel is avoided, the utilization rate of the grinding wheel is improved, the energy consumption is reduced, and the grinding efficiency and the machining precision are ensured.

The utility model relates to the technical field of coffee grinding, in particular to a shark tooth cone cutter head for a coffee bean grinding machine, which comprises a cone-shaped main body, and a plurality of obliquely arranged grinding blades are arranged on the outer wall of the cone-shaped main body. The grinding blade comprises a square tooth part located at the small-diameter end and used for preliminarily chopping coffee beans and a ridge tooth part located at the large-diameter end, and the ridge tooth part is further provided with a powder outlet arc groove used for increasing the powder outlet speed. Complete coffee beans can be preliminarily cut to be finely crushed by arranging the square tooth part on the grinding blade at the small-diameter end of the conical cutter head body, then the chopped coffee beans are finely ground into small particles through the edge tooth part at the large-diameter end in the middle, the grinding efficiency is effectively improved, the powder outlet arc grooves are formed in the edge teeth to increase the powder outlet speed, and the grinding efficiency is improved. And the bean and powder clamping condition is avoided.

The utility model provides an edging device for processing plastic-steel doors and windows, and relates to the technical field of plastic-steel doors and windows, the edging device comprises an adjusting assembly, an edging assembly and a clamping assembly are arranged on the adjusting assembly, the adjusting assembly comprises a processing frame, sliding rails are symmetrically installed on the inner side of the processing frame, and lead screws are installed in the sliding rails. The butt joint seat is installed on the outer side of the rotating shaft in a sliding mode, the positioning column is promoted to slide in the sliding installation groove, then the rotating seat is used for driving the buckling piece to rotate, the buckling piece and the butt joint seat are clamped, finally the threaded sleeve is moved downwards, the threaded sleeve and the buckling piece are connected in a threaded mode, and limiting is facilitated; the limiting block is beneficial to providing a limiting effect on the threaded sleeve, the installation stability of the grinding plate is guaranteed, meanwhile, operation is convenient and fast, complex and tedious operation steps do not need to be used, the labor and time cost is reduced, the assembly and disassembly efficiency is improved, the equipment shutdown waiting time is shortened, and the production efficiency is improved.

The utility model discloses a pharmaceutical grinding device which comprises a machine frame, a cleaning mechanism is arranged above the machine frame, the cleaning mechanism comprises an electric push rod, a servo motor, a rotating frame, a double-shaft motor, a mounting frame, a workbench and a scraper, a grinding mechanism is arranged below the cleaning mechanism, and a discharging mechanism is arranged in the middle of the machine frame. An electric push rod is arranged, the electric push rod drives a servo motor to ascend and descend, the servo motor drives a double-shaft motor to conduct reversing through a rotating frame, the grinding process and the cleaning process are switched, the double-shaft motor drives a plurality of scrapers to rotate through a mounting frame, and under driving of the electric push rod, the scrapers are inserted into a grinding base; and the scraper is in clearance fit with the inner wall of the grinding base, so that medicine powder in the grinding table is automatically scraped out, the medicine powder is completely discharged through the discharging mechanism, manual work is replaced, medicine in the grinding table is scraped out, and the medicine grinding efficiency is guaranteed.

The invention relates to the technical field of magnesium oxide production, in particular to magnesium oxide production grinding equipment which comprises a grinding cylinder, symmetrically-distributed supporting plates are fixed to the outer wall of the grinding cylinder, a grinding plate is arranged in the grinding cylinder, a grinding mechanism is arranged above the grinding plate, a mounting plate is fixed to one of the supporting plates, a motor is fixed to the mounting plate, and the motor is fixed to the other supporting plate. A rotating rod is fixed to the output end of the motor and connected with a vibrating mechanism, the vibrating mechanism is used for driving the grinding plate to vibrate up and down, a baffle is fixed in the grinding cylinder, a transmission rod penetrates through the baffle, and the upper end of the transmission rod is connected with a discharging mechanism; when magnesium oxide is ground, the magnesium oxide can uniformly fall on the surface of the grinding plate, the grinding effect of the grinding roller on the magnesium oxide is effectively improved, the grinding plate can rapidly vibrate when the magnesium oxide is ground, and the phenomenon that through holes in the grinding plate are blocked by the magnesium oxide is effectively avoided; and the grinding efficiency of magnesium oxide is ensured.

The utility model relates to the technical field of forge piece machining, and discloses an anti-striking adjustable grinding device for forge piece machining, the anti-striking adjustable grinding device comprises a base, a U-shaped vertical plate is fixedly connected to the upper end of the base, and an electric push rod is fixedly connected to the upper end of the U-shaped vertical plate through a movement driving mechanism; a concave-convex change feedback mechanism is fixedly mounted at the output end of the lower end of the electric push rod, a grinding motor is fixedly connected to the lower end of the concave-convex change feedback mechanism through a universal connecting base, and a grinding wheel is fixedly connected to the output end of the lower end of the grinding motor; the lower end of the concave-convex change feedback mechanism and the upper end of the grinding motor are fixedly connected with a plurality of compensation springs arranged in a surrounding mode, and a PLC is further fixedly installed on the outer wall of the U-shaped vertical plate. The grinding position can be correspondingly adjusted according to the concave-convex degree of the surface of the forge piece, and the grinding quality and efficiency are guaranteed.

The utility model discloses a polishing device convenient for flowmeter sensor processing, which comprises a bottom plate, a rodless air cylinder is arranged on the upper surface of the bottom plate, an L-shaped plate is arranged above the rodless air cylinder, a motor is arranged on the upper surface of the L-shaped plate, the output end of the motor is fixedly connected with a threaded rod, and the output end of the threaded rod is fixedly connected with a rotating shaft. A through groove is formed in the upper surface of the L-shaped plate, the outer surface of the threaded rod is in threaded connection with a moving plate, and a grinding assembly is installed at the bottom end of the moving plate. According to the device, through the arranged grinding assembly, grinding work of the flowmeter sensor can be completed, through cooperation of a rodless air cylinder, an L-shaped plate, a motor, a threaded rod, a through groove and a moving plate, the rodless air cylinder can drive a grinding wheel to move front and back, meanwhile, the motor works, the grinding wheel can move left and right, and the grinding wheel can move back and forth; and the grinding wheel can comprehensively grind the flowmeter sensor, so that the grinding efficiency of workers is guaranteed.

The invention belongs to the technical field of polishing devices, and particularly relates to an air conditioner shell sheet metal machining surface polishing device which comprises a base, an operation box and a PLC, and the operation box and the PLC are arranged on the right side wall of the base. When the grinding device is used for grinding the cylindrical air conditioner metal shell, a grinding tool can be completely attached to the curved surface of the shell for grinding work, so that the situation that the curved surface of the air conditioner shell is not ground in place or is not ground uniformly is avoided, and the grinding quality of the cylindrical air conditioner shell is guaranteed; when the curved surface of the air conditioner metal shell is polished, the shape of the polishing assembly can be automatically and adaptively adjusted according to the curved surface degree of the air conditioner metal shell, and it is ensured that the polishing pressure between the polishing assembly and the curved surface is evenly distributed; therefore, the situation of excessive polishing or insufficient polishing of the curved surface of the air conditioner metal shell is avoided.

The utility model discloses a kind of pure nickel mirror surface steel strip grinding equipment for semiconductor nuclear power military industry, it is related to semiconductor nuclear power military industry technical field, including workbench and fixed plate, the top of fixed plate is provided with longitudinal moving mechanism, longitudinal moving mechanism includes support plate, the top of fixed plate is provided with support plate.The utility model through the setting of longitudinal moving mechanism, can reach the effect of longitudinal moving adjustment of grinding disc, in the use process, by starting motor repeatedly driving grinding disc back and forth longitudinal movement, while moving, by the sliding of sliding block in the sliding rail outer wall, make grinding disc more stable and smooth, it can avoid because grinding disc is difficult to move longitudinally, and the width of grinding disc is less than steel strip, so that grinding disc needs to grind steel strip multiple times, make grinding time become long, it can also make the situation that grinding effect becomes poor appear, guarantee the grinding effect and grinding efficiency of the grinding equipment.

This utility model relates to the technical field of dental medical devices, and more particularly to a polishing head with interchangeable heads. It includes: a body with an internal drive motor and a speed-changing mechanism, the drive motor and the speed-changing mechanism being connected in a transmission connection; and a head, including a straight head and an elbow, which can be selectively and detachably connected to the front end of the body. The straight head or elbow has a working component inside, which is connected in a transmission connection to the speed-changing mechanism. The drive motor can drive the speed-changing mechanism to rotate, thereby rotating the working component. This utility model provides a polishing head with interchangeable heads. By using a detachable connection between the head and body, and allowing the straight head and elbow to be selectively connected to the front end of the body, users can easily select and quickly change between the straight and elbow heads according to their needs, thereby obtaining a larger operating space or a better operating field of vision.

The utility model discloses a pretreatment device for supercritical extraction, which comprises a treatment box, a feed hopper arranged at the upper end of the treatment box, rotatable grinding rollers symmetrically distributed in the treatment box, and a rotatable conveying belt arranged in the treatment box, one end of the conveying belt is positioned below the feed hopper, and the other end of the conveying belt is positioned below the feed hopper. A plurality of magnetic bars which are evenly distributed and fixedly connected are arranged in the conveying belt, a separating brush used for separating impurities from the conveying belt is arranged on one side of the treatment box, and a collecting box used for collecting the separated impurities is arranged in the position, located below the separating brush, of the treatment box. The conveying belt is added, so that materials can be uniformly fed into the grinding roller, the grinding efficiency is ensured, meanwhile, the conveying belt and the magnetic rod are combined, and the magnetism of the magnetic rod can adsorb magnetic impurities in the materials, so that the impurities and the materials are separated in time, and the cleanliness of raw materials is improved; and the separation brush and the collection box are added, so that the magnetic impurities can be separated from the conveying belt in time by utilizing the separation brush and are collected by the collection box.

The utility model relates to the field of steel structure derusting, in particular to a steel structure internal corner surface derusting device which comprises a derusting machine, the derusting machine comprises a machine body and a mounting frame, a connecting frame is fixedly connected to the periphery of the mounting frame, and the upper portion of the connecting frame is slidably connected with an upper placing frame through a sliding groove. The lower portion of the connecting frame is slidably connected with a lower placing frame through a sliding groove, the ends, close to each other, of the upper placing frame and the lower placing frame are distributed in a staggered mode, the ends, away from each other, of the upper placing frame and the lower placing frame are each provided with a plurality of mounting grooves, the upper placing frame and the lower placing frame are each provided with a grinding block through the mounting grooves, and each grinding block is composed of a single-face ring and a plurality of side blocks; according to the utility model, the front and back corner I-beams are simultaneously polished, so that four working strokes required for independently polishing and derusting the two corner I-beams originally can be reduced to two working strokes, the working efficiency is multiplied, and the large-batch production work of production enterprises is facilitated.

The chemical raw material grinding device convenient to discharge comprises a box body, a supporting frame is arranged outside the box body, a driving motor located at the top of the box body is arranged below the center of the supporting frame, a smashing head connected with a rotating shaft is arranged in the box body, the other end of the rotating shaft is connected with the driving motor, and the driving motor is connected with the box body. The crushing head is of a circular truncated cone structure, a material containing mechanism is arranged on the outer side of the crushing head, so that raw materials are crushed between the crushing head and the material containing mechanism, a material scraping mechanism is arranged on one side of the crushing head and comprises an electric hydraulic push rod, and the electric hydraulic push rod is fixed to the lower portion of the supporting frame. An electric hydraulic push rod is arranged in the box body, a scraping plate is arranged below the electric hydraulic push rod, a through hole is formed in the top of the box body, the scraping plate is connected into the through hole, and the scraping plate extends from top to bottom along the generatrix of the circular truncated cone shape under pushing of the electric hydraulic push rod.