54results about How to "Avoid material break" patented technology

The automatic control method for steel ball coal mill in thermal power plant adopts a double-layer control structure, including an upper layer of self optimizing algorithm and a lower layer of multidimensional fuzzy control algorithm. The self optimizing algorithm finds out the optimal inside coal storage quantity inside the coal mill, the optimal outlet temperature of the coal mill and the optimal inlet negative pressure value of the coal mill as the controlling set values; and the multidimensional fuzzy control algorithm realizes the automatic regulation of the coal feed quantity, the hot air valve opening, and the recirculating air valve opening or the cold air valve opening, so as to ensure the safe and reliable running of the steel ball coal mill system in optimal mode.

The invention relates to a building 3D printing circulating feeding control method and system. The method comprises the following steps of in the 3D printing process, monitoring in real time the material liquid level position in a feeding device of a 3D printer and forming material level information; judging whether the obtained material level information reaches the set lowest position or not, and if yes, feeding material to the feeding device until the material level information reaches the set highest position; in the feeding process, acquiring in real time the actual width of printing lines, and calculating the difference value between the actual width of the obtained printing lines and the designed width of the lines according to the designed width of the lines; and judging whether the calculated difference value is within an allowable range or not, and if not, adjusting the travelling speed and/or the discharging speed of the 3D printer so as to enable the difference value to be within the allowable range. According to the control method, real-time detecting, real-time printing and real-time adjusting are realized, so that the quality of 3D printing can be improved by the feedback, and the precision of components formed by printing is improved.

The invention discloses a tobacco shred material flow control device and a tobacco shred material flow control method. The tobacco shred material flow control device comprises a bijection optical grating, a main control device and a belt weigher control device, wherein the main control device is respectively and electrically connected with the bijection optical grating and the belt weigher control device, the inner wall of a tobacco shred feeding machine storage bin is provided with the bijection optical grating which is used for detecting the material positions of tobacco shreds in the tobacco shred feeding machine storage bin and sending material position signals to the main control device, the main control device sends a control signal to the belt weigher control device, and the belt weigher control device controls the tobacco shred conveying flow. The tobacco shred material flow control device and the tobacco shred material flow control method can be used for adjusting the tobacco shred flow of a belt weigher according to the material positions detected by the bijection optical grating, so that the feeding machine storage bin can be kept in a stable material position under the condition of ensuring the relatively stable perfuming flow, accordingly the condition that materials are broken is effectively avoided, and the continuity of production is ensured.

The invention discloses an efficient automatic production line for PVC processing. The efficient automatic production line comprises an automatic feeding mechanism, a mixing mechanism, a planetary extruder, a six-roll calendaring primary and auxiliary machine, a roll stripping mechanism, a calender roll, a roll cooling mechanism, an offcut removing mechanism, a traction roll and a sheet coiler, araw material storage device, a vacuum feeding machine and a group of auxiliary material storage devices and a group of processing auxiliary tanks are arranged in the automatic feeding mechanism, a discharging opening of the mixing mechanism is connected with a feeding opening of the planetary extruder through a feeding pipe, a discharging opening of the planetary extruder is connected with the six-roll calendaring primary and auxiliary machine through a transmission belt, and the roll stripping mechanism, the calender roll, the roll cooling mechanism, the offcut removing mechanism, the traction roll and the sheet coiler are sequentially arranged on the rear portion of the six-roll calendaring primary and auxiliary machine. The efficient automatic production line is simple in structure, reliable in design and easy to operate, the automation from raw material processing to finished product coiling is achieved thoroughly, the product processing quality is improved, and the PVC film production efficiency is also improved.

The invention relates to the rubbish smashing technology field, in particular to a rubbish smashing device for environment protection. The rubbish smashing device for the environment protection comprises a support seat, wherein a discharging device is arranged on the left side of the top end of the support seat, a smashing box is arranged on the right side of the discharging device, the smashing box is fixedly connected with the support seat, a smashing roller is rotatably connected with the top end of the inner side of the smashing box, a loading device is fixedly connected with the right side face of the support seat, and the loading device is fixedly connected with the smashing box. By adopting the arrangement mode of arranging a push plate, a second conveying machine and a draught fanand using the arrangement mode cooperatively with slip connection between a cam and the push plate, rotating connection between the push plate and a support frame, fixed connection between the secondconveying machine and the support frame and air drying of the draught fan for the second conveying machine, after the device is started, a fixed amount of damp rubbish is first placed in the support frame, then automatic loading of the rubbish is performed, and therefore a material supply failure phenomenon is prevented from occurring, and labor cost is reduced, and furthermore automatic maintenance for a rubbish conveying mechanism is facilitated, and use life of the device is prolonged.

The invention discloses a pneumatic paste filling machine. The machine comprises a base and a storage hopper; sliding wheels are mounted at the bottom of the base through fixing rotating shafts; a brake rod is mounted on one side of each sliding wheel; an accommodating groove is formed in one side of the base; a sealing cover is mounted at one end of the accommodating groove through first hinges; a power switch is mounted on one side of an air inlet; a second alarm is mounted on one side of a first alarm; the storage hopper is mounted on one side of the second alarm; a stirring motor is mounted in the middle of a motor frame; a programmable logic controller (PLC) is mounted on one side of the stirring motor; a rotating shaft is sleeved with the other side of a coupling; stirring blades are welded at the bottom of the rotating shaft; and a pressure sensor is mounted at the bottom end inside the storage hopper. The machine is convenient to move, paste sedimentation or condensation can be prevented, the product quality can be improved, a foot switch is convenient to store, the storage hopper is monitored in real time, material breakage is prevented, and the machine is convenient to use.

The invention discloses a core soldering tin bar continuous casting and extruding machining system and a molding technology thereof. Metal tin is molten in a rotating ventilation purifying furnace (1), nitrogen or hexachloroethane is led through a graphite rotator (6), and slag is brought out; molten tin flows into a heat preserving furnace (2), slag and impurities are blocked through a baffle and a filter screen, and purified melt enters a discharging cavity, flows into a flow furnace (3), and finally flows into a continuous extrusion machine (4); molten metal (16) flows to an extruding groove (8a) of a rotating extruding wheel, in the rotating process of the extruding wheel, solidifying and molding of the molten metal are completed, meanwhile, cold air blows the extruding groove through a ventilation pipe (13), heat of the extruding wheel is brought away, and cooling water in a cooling water circular channel (12) cools the extruding wheel; then, the molten metal enters a mold (10) through an extruding die (9), meanwhile, scaling powder is injected into the mold, casting and extruding are carried out, and a bar (15) is obtained. The production efficiency is high, an internal structure of a product is uniform, core breaking is not prone to happening, and the surface quality is good.

The invention discloses an automatic vermicelli production process with stable discharging. The automatic vermicelli production process specifically comprises the following steps: step I, introducingproduction raw materials for vermicelli into a mixing tank for mixing and processing, and removing bubbles, entrained in the raw materials in the mixing tank, by using a negative pressure mechanism. According to the automatic vermicelli production process with stable discharging, a sealing plate is pushed by a driving shaft of a servo electric cylinder I to move upwards in a negative pressure cavity; gas in the negative pressure cavity is discharged through an exhaust pipe; an electromagnetic valve switch is turned off; the sealing plate is pulled by the driving shaft of the servo electric cylinder I to move downwards in the negative pressure cavity; negative pressure is generated at the upper portion in the negative pressure cavity; the bubbles entrained in the raw materials in the mixingtank are removed through an air guide pipe, and the step is repeated for multiple times to complete removal of the bubbles entrained in the raw materials, thus effectively avoiding the bubbles entrained in the pulpy raw materials and the phenomenon of material breaking during discharging of an extruder; discharging of the vermicelli raw materials is stable; and the vermicelli production quality and production efficiency are relatively high.

The invention discloses a blockage preventive device of a tobacco slicing machine. The blockage preventive device comprises a cutter, a worktable, a downstream machine, a barrier, a guide plate, a reset mechanism and an alarm mechanism. The cutter is positioned above the worktable, the downstream machine is positioned below the barrier, and the barrier is fixedly arranged on the lower side of theworktable; the guide plate is positioned on the right side of the barrier, only tobacco bales with the sizes smaller than or equal to approval standards are allowed to pass gaps between the guide plate and the barrier, the alarm mechanism is elastically connected with the guide plate by the reset mechanism, the reset mechanism can be driven by the guide plate to move rightwards to trigger the alarm mechanism if the guide plate is squeezed when tobacco bales with the sizes larger than the approval standards fall down, the tobacco bales with the sizes larger than the approval standards can fallon the downstream machine, and the guide plate can be reset by the reset mechanism. The blockage preventive device has the advantages that the blockage frequencies of the tobacco slicing machine can be effectively reduced by the blockage preventive device, accordingly, the production continuity can be improved, and the production efficiency of enterprises can be improved; alarm effects can be realized for blockage, accordingly, operators can be reminded of timely handling blockage, and material deficiency of production lines can be prevented.

The invention relates to a standard movable light steel production line and a self-adaption supply method thereof. The production line comprises a standard box, a plate strip feeding device and lightsteel molding equipment; the light steel molding equipment is fixed in the standard box; the plate strip feeding device is placed in the standard box, and can be shifted outside the standard box; opening and closing doors are respectively arranged at the front and back ends of the standard box; two side box walls can be upwards overturned and fixed by any angles; solar power generation panels aredetachably fixed on the side box walls and the top of the box; multiple accumulators and inverters are arranged in the standard box; the solar power generation panels charge the accumulators; the accumulators supply electricity to the light steel molding equipment through the inverters; the plate feeding device comprises a feeding table; a feeding disc wound with a plate strip is arranged on the feeding table; and the feeding disc is driven to rotate by a servo motor.

The invention discloses a material sucking device and filling equipment, and belongs to the technical field of optical cable manufacturing. The material sucking device is used for sucking a material in a packaging bag into a material filling device and comprises a material sucking head and a balancing weight, wherein the material sucking head is of a hollow structure with the side wall being provided with through holes, is arranged in the material in the packaging bag in a buried mode and communicates with the material filling device through a material sucking pipe, and the balancing weight and the material sucking head are connected through a first rope. The filling equipment comprises the material filling device and the material sucking device. The material sucking head is arranged in the material in the buried mode and balanced through the balancing weight, thus the material sucking head can automatically sink along with continuous reducing of the material in the packaging bag to ensure continuous material supplying to the material filling device, and the phenomenon of material discontinuing is avoided.

The invention discloses an asphalt mixture transportation method for an expressway. The asphalt mixture transportation method comprises the steps that the number of material transportation vehicles iscalculated, an advance route is determined, the material transportation vehicles are preheated, lubricant is sprayed, vehicles are loaded, heat preservation is conducted, transportation is conducted,and cleaning is conducted, the number of the material transportation vehicles is determined according to production capacity, transport time, consumption and the like of a mixing plant, safety reserve vehicles are increased, and occurrence of material stopping of paving is avoided. Material transportation vehicle pre-heating, lubricant spraying, heat preservation and other measures can minimize probability of segregation of an asphalt mixture, and the effects of improving the quality of asphalt pavement, prolonging the service life of the pavement, and lowering the cost of later maintenance are realized.

The invention discloses a material conveying and spraying device for 3D printing. The material conveying and spraying device for 3D printing comprises a mounting main body frame and a fixing frame fixed to one end of the mounting main body frame, a mounting and dismounting structure is mounted on one side of the mounting main body frame, a motor is mounted on one side of the mounting main body frame, and a rotating shaft is mounted at the output end of the motor through a coupler. A driving gear is fixed to the end, away from the motor, of the rotating shaft, a driven gear is engaged with one side of the driving gear, a conveying shaft is arranged at the center position of the driven gear, the two ends of the conveying shaft are each sleeved with a driving disc in the axial direction, and a short guide cylinder is fixed to one side of the fixing frame. The side, away from the driving discs, of the conveying shaft is fixedly connected with one side of the mounting main body frame. According to the material conveying and spraying device for 3D printing, the mounting and dismounting structure is arranged on the mounting main body frame, the conveying shaft is arranged on the fixing frame, and a fixing disc is directly arranged on a positioning column on the surface of the printing device, so that the phenomena of material breakage and the like are avoided, and meanwhile the spraying position can be conveniently and randomly adjusted.

The invention relates to a feeding device capable of preventing material breakage and used for 3D printing. The feeding device comprises a base and two supporting frames, wherein the two supporting frames are arranged on one side of the top of the base in parallel; each supporting frame comprises a material plate, a protection part, a lubricating part and an adjusting part, wherein the material plate is arranged on one side of the outer wall of the corresponding supporting frame, the protection part is arranged at one corner of the outer wall of the material plate, the lubricating part is suitable for penetrating through the middle of the material plate, and the adjusting part is suitable for being arranged on the outer wall of the lubricating part in a sleeving mode; after the adjusting part is pulled back and forth, the lubricating part can lubricate and limit the adjusting part, so that the outer ring of the adjusting part can be adjusted; and after raw materials make contact with the protection part, the protection part can be compressed to prevent the raw materials from being broken. According to the feeding device, during use, the size of the outer ring of the adjusting part can be adjusted by pulling the adjusting part, then different types of material rollers can be fixed, and in addition, in the process that the adjusting part slides on the outer wall of the lubricating part, the lubricating part can limit the adjusting part and lubricate the inner wall of the adjusting part and the outer wall of the lubricating part.