46results about How to "Speed up loosening" patented technology

The invention discloses a method for extracting collagen fibers from offal produced during a tanning process. At present, the offal produced during the tanning process is treated through a chemical treatment method which has the defects that though the product added value is higher, the treatment is complex, the cost is high, secondary pollution is generated, the offal utilization ratio is low, and a great quantity of leather waste cannot be effectively utilized all along. The method provided by the invention comprises the following steps: selecting blocky wet blue leather scrap, immersing the wet blue leather scrap in soda lye for 36 to 48 hours, treating the tumefied wet blue leather scrap with ultrasonic equipment for 20 to 30 min, passing the wet blue leather scrap through a high-pressure water jet device slowly, drying, and finally beating and opening through a cotton carding machine to ensure complete separation between the collagen fibers and obtain the collagen fibers. The invention mainly adopts the physical and mechanical method, so as to ensure that trivalent chromium cannot be converted into poisonous hexavalent chromium; environment pollution is avoided; and the extraction rate of collagen fiber approximately reaches 70 percent.

The invention discloses a production apparatus for gardening nutritional soil, which includes: a bottom board, a slide board, a rotational support sleeve, a stirring barrel, and a drawing box. The bottom board is provided with a sliding penetrating groove, inner wheel teeth, the slide board, the rotational support sleeve and the stirring barrel. The slide board is provided with a driving rotary shaft, a driving inclined gear, outer wheel teeth, a stirring rotary shaft, a transmission inclined gear, a spiral stirring blade, a rotating gear, a fixing annular sleeve, an inner gear, a planetary gear and a linking support. The stirring barrel is provided with a material inlet and a material discharge cover. The drawing box is arranged on the left side of the bottom board and is provided with a motor, a rotating shaft, a rotating disk, a drawing rod and a linking rod. The production apparatus is increased in soil processing efficiency through horizontal reciprocating movement as well as the spiral stirring blade rotating at the same time; meanwhile, with cooperation of the rotatable stirring barrel, better processing effect is achieved.

The invention discloses an ultrasonic cleaning device for a film coated graphite frame, which comprises a cleaning tank, an ultrasonic vibrator mounting frame, an ultrasonic generator, a swing bearing frame, a supporting axle, a bevel gear, a driving gear, a servomotor and an electric control part, wherein the ultrasonic generator is arranged in the ultrasonic vibrator mounting frame, and is arranged at the bottom of the cleaning tank; the swing bearing frame is arranged in the cleaning tank in a swing mode; and the servomotor drives the swing bearing frame to reciprocate in a mode of meshed transmission of the driving gear and the bevel gear. The ultrasonic generator accelerates the reaction of a hydrofluoric acid solution and silicon nitride, and the left-right swing of the swing bearing frame increases the contact of the graphite frame and the hydrofluoric acid solution, can homogenize the concentration of the hydrofluoric acid solution in the cleaning tank and is more favorable for the reaction of the hydrofluoric acid solution and the silicon nitride. Compared with the prior art, the ultrasonic cleaning device is high in speed and good in cleaning effect and can remove silicon nitride or dirt attached to the corners of the graphite frame, and the circulating graphite frames required by production are only 1 / 2 of the graphite frames in the prior art.

The invention relates to a recycled aggregate screening device. The device comprises a rack, a screen drum rotationally connected to the rack, a driving assembly used for driving the screen drum to rotate, a feeding hopper arranged on one side of the rack and used for feeding materials into the screen drum, and a discharging hopper arranged at the lower portion of the screen drum, wherein the rackis rotationally connected with a rotating rod, the rotating axis of the rotating rod is parallel to the screen drum, the rotating rod is provided with a plurality of telescopic rods evenly distributed in the circumferential direction of the rotating rod, rolling balls are arranged at the tail ends of the telescopic rods correspondingly, springs forcing the rolling balls to move in the radial direction away from the rotating rod are arranged in the telescopic rods correspondingly, the screen drum is provided with a plurality of screen holes evenly distributed in the circumferential direction of the screen drum, the outlet ends of the screen holes are provided with first meshing faces allowing the rolling balls to mesh with correspondingly, and when the screen drum rotates, the rotating rodis driven to rotate through meshing of the rolling balls and the first meshing faces of the screen holes. The device has the effect of reducing aggregate blockage.

The invention discloses low-residue high-storage stability low-temperature tin paste for aluminium and a preparation method thereof. The tin paste for the aluminium consists of paste flux and tin-based brazing material alloy powder. The tin paste is prepared from the following raw materials in percentage by mass: 8.0 to 24.0 percent of the paste flux and the balance of the tin-based brazing material alloy powder, wherein the paste flux comprises the following components in percentage by mass: 4.0 to 10.0 percent of hydroxyl amine, 0.4 to 1.0 percent of metal active salt, 2.0 to 6.0 percent of a co-solvent, 1.2 to 3.0 percent of metal halate, 0.2 to 1.0 percent of a thixotropic agent, and 0.2 to 3.0 percent of a brazing material coating agent. When the paste flux is prepared, the metal halate is dispersed into the paste flux in a low-temperature solid form through high-speed shearing. The prepared paste flux has the advantages of low residue, high storage stability and the like after soldering, and can be applied to the situation of low-temperature soft brazing of the aluminium and an aluminium alloy, and is particularly suitable for reflow soldering of electronic assembly aluminium and aluminium alloy materials.

The invention relates to a water-gas mixing jet flow device used for sinking a pile, which comprises a pile body, a high pressure water pipe and a high pressure gas pipe. The water-gas mixing jet flow device is characterized in that the high pressure water pipe and the high pressure gas pipe extend into a high pressure jet flow mixing pipe at the bottom of the inner cavity of the pile body in parallel. The device is favorable for fully utilizing the kinetic energy of high pressure water and high pressure gas to flush the stratum layer so that sand pulp is formed and discharged, thereby the work efficiency for sinking the pile is improved.

The invention relates to chemical machinery, in particular to solid waste treatment equipment and an application. The solid waste treatment equipment comprises a long barrel-shaped shell which is horizontally arranged, wherein an inlet is formed in one end of the long barrel-shaped shell, and an outlet is formed in the other end of the long barrel-shaped shell; a spiral rotating shaft is arranged along the axial direction of the long barrel-shaped shell, more than one longitudinal stirring rods which are perpendicular to the spiral rotating shaft are arranged on one side, which is near the inlet, of the spiral rotating shaft, and more than one transverse stirring rods which are parallel to the spiral rotating shaft are arranged on one side, which is near the outlet, of the spiral rotating shaft; and an upper shell which can be opened is arranged on the upper part of the long barrel-shaped shell, and more than one through holes are formed in the upper shell. The solid waste treatment equipment is put in a flat-top tunnel brick kiln, high temperature in the flat-top tunnel brick kiln is utilized to treat solid waste in the solid waste treatment equipment, the spiral rotating shaft is rotated, the solid waste is stirred by the longitudinal stirring rods, so as to evaporate moisture, and the solid waste is stirred by the transverse stirring rods, so as to loosen the solid waste. According to the solid waste treatment equipment, the treatment of the solid waste can be promoted, and gas can be effectively exported.

The invention discloses a frozen meat thawing device including a thawing chamber; one side of the thawing chamber is provided with a steam generator, the other side of the thawing chamber is providedwith an induced draft fan, the upper part of an inner chamber of the thawing chamber is horizontally provided with a fixed plate and an installation plate, a runway shaped sliding groove is arranged between the fixed plate and the installation plate, and the lower parts of the fixed plate and the installation plate are provided with a sprocket assembly; the sprocket assembly includes a driving sprocket and a driven sprocket as well as a chain in transmission connection between the driving sprocket and the driven sprocket; a plurality of groups of guide plates are arranged at intervals on the chain; suspension rods are arranged in guide holes in a run-through manner, one end of each suspension rod extends to the upper part of the sliding groove and is fixedly connected with a sliding block,and the other end of each suspension rod extends downward and is connected with a hook; two sides of the chain are vertically provided with extrusion rollers, and the extrusion rollers are fixedly arranged on extrusion roller frames. The frozen meat thawing device can make frozen meat thawed fast and uniformly, and each block of the frozen meat is thawed separately without cross contamination; blood water inside the frozen meat not only can be effectively discharged, but also can accelerate the loosening of the frozen meat to make thawing fast.

The invention discloses a vibration acceleration testing method and apparatus for a subway center pin bolt. Two connectors of the subway center pin bolt do not make relative displacement and thus thestudy can not be performed by lateral vibration testing. According to the invention, a strain gauge is attached to a cushion block through hole; an equivalent nut is embedded in a substrate through the top of a substrate of a vibration test fixture; a cushion block is arranged at the bottom of the substrate; and a tested center pin bolt passes through the through hole of the cushion block and is connected with the equivalent nut firmly. Vibration acceleration testing is carried out by using a vibration bench; the strain gauge collects the vibration axial clamping force; and vibration test is carried out under different vibration levels. Axial strain data of the cushion block are processed to obtain a degradation equation and an acceleration equation of the tested center pin bolt. Accordingto the provided reliability appraisal test method for a subway center pin bolt, the guiding basis is provided for screening a subway center pin bolt; and a method for testing the influence of gluingon the anti-loose performance of the subway center pin bolt is also provided to the guiding basis for the anti-loose measures of the subway center pin bolt.

The invention discloses an optical cable GTL base oil filling paste. The optical cable GTL base oil filling paste is mainly composed of GTL base oil, oil decomposition inhibitor, thermoplastic synthetic rubber, antioxidant and thickener. The invention further discloses a preparing method of the optical fiber GTL base oil filling paste. The optical fiber GTL base oil filling paste has the advantages of being low in density, good in low-temperature performance and capable of being safely used as factice products for replacing synthetic oil in an environment of minus 50 DEG C, having good colloid stability, oxidation stability, heat resistance and weather resistance and being system-oil-decomposition-free in system and low in acid value; being high in thixotropic index, low in viscosity, strong in water-resistance, emulsification-free, good in high temperature drip, wide in environment temperature application range, and enabling an optical fiber to be always in a stress-free state inside a buffer tuber and a cable core to be always in a stress-free state inside a cable.

The invention relates to a high-efficiency soot blowing device for an SCR (selective catalytic reduction) denitration catalyst. The high-efficiency soot blowing device for the SCR denitration catalystcomprises a purging chamber and a dust removing chamber which are separated by a partition plate, wherein a placing platform is positioned in the purging chamber, and a purging unit is arranged at the top of the purging chamber; a negative pressure unit comprises an air suction channel which is provided with an upward air inlet and positioned below the placing platform, and a screen plate is arranged at the air inlet; the air suction channel penetrates through the partition plate and is connected with the negative pressure unit, and the purging unit comprises a purging pipe which is fixedly arranged at the top of the purging chamber by a horizontal moving mechanism; the tail end of the purging pipe is provided with a circular cavity, and a turret is arranged in the circular cavity; sealing rolling balls which are matched with an air outlet of the circular cavity are uniformly distributed on the circumference of the turret, and the sealing rolling balls are arranged on the turret by anelastic bracket; a funnel tube is arranged in the air suction channel, and the funnel tube forms an opening and closing unit of the air suction channel by the air pressure change of the purging chamber. The device adopts the combination of various forms of pressure multi-change, positive and negative pressure change, and sudden change to remove dust from the catalyst, and the soot blowing effectis significantly improved.

A multifunctional spray sterilizer comprises a frame; the frame is provided with a gasoline engine, which drives a plunger pump through a crankcase; the plunger pump is provided with a relief valve, a water inlet, a liquid inlet and a water outlet; the water inlet is connected with a water tank through a leather hose; the liquid inlet is connected with an imbibition apparatus; the water outlet is connected with a spray gun through a high pressure output tube; the imbibition apparatus is characterized by comprising an imbibition joint connected to a medical liquor inlet; the imbibition joint is provided with an imbibition port and a backwater port; the imbibition port is connected with an imbibition valve; the imbibition valve is connected with an imbibition switch; the imbibition switch is connected with an imbibition rubber hose; a head of the imbibition rubber hose enters the medical liquor; and the backwater port is connected with the backwater rubber hose through a backwater joint. The scheme employs spray for disinfection and has advantages of uniform spraying, large area, high disinfection efficiency, safety, health, no damage on human body, low energy consumption and low cost.

The invention relates to a safe and stable tooth extraction auxiliary instrument. The safe and stable tooth extraction auxiliary instrument comprises two parallel transverse pipes, wherein two ends ofeach transverse pipe are closed; a first piston which is in sealing contact fit with each transverse pipe is arranged in the transverse pipe; a horizontal first through hole is formed in the right side of each transverse pipe; a horizontal first piston rod which is in clearance fit with each first through hole is arranged in the first through hole; the outer end of each first piston rod penetrates through the corresponding first through hole and is in shaft pin connection with the left end of a horizontal second piston rod; and a horizontal barrel is arranged on the right side of each transverse pipe. According to the safe and stable tooth extraction auxiliary instrument, a manner of an external vibrator is adopted, so that stimulation of vibration to the brain in a tooth loosening process can be effectively reduced and side effects can be effectively reduced; a manner of matching an eccentric wheel with a third piston rod, an inclined rod and a first retractable rod is adopted, so that a clamping block clamps a tooth to shake in two directions in a vertical movement process of the third piston rod, the tooth extraction time is shortened and pains of patients are reduced; and meanwhile, damages to the tooth in a whole process can be reduced.

The invention relates to a water-gas mixing jet flow device used for sinking a pile, which comprises a pile body, a high pressure water pipe and a high pressure gas pipe. The water-gas mixing jet flow device is characterized in that the high pressure water pipe and the high pressure gas pipe extend into a high pressure jet flow mixing pipe at the bottom of the inner cavity of the pile body in parallel. The device is favorable for fully utilizing the kinetic energy of high pressure water and high pressure gas to flush the stratum layer so that sand pulp is formed and discharged, thereby the work efficiency for sinking the pile is improved.

The invention discloses a lung clearing and sputum excretion device. The device comprises a bottom plate and a bed plate; a vertical plate and a telescopic cylinder are arranged on the bottom plate; the bottom of the bed plate is hinged to the top of the vertical plate and the top of the telescopic cylinder; two shoulder baffles are mounted at the front part of the bed plate; a vertical frame is in threaded connection with the bottom plate; a motor and a piston cylinder are installed on the vertical frame; a rotary disc is in key connection with a power output shaft of the motor; an eccentricshaft is arranged on the rotary disc; a connecting rod is installed on the eccentric shaft; one end of the connecting rod is connected with a piston rod; the piston rod is sleeved by the piston cylinder; and a tapping block is fixedly connected to the bottom end of the piston rod. The bed has the advantages that the telescopic cylinder drives one end of the bed board to ascend or descend, so thatthe inclination angle of the bed board is adjusted, the upper body of a patient lying on the bed board inclines downwards, and sputum can be discharged from the body of the patient; the motor drives the rotary disc to rotate, and the connecting rod drives the piston rod to do piston motion in the piston cylinder in the vertical direction, so that the tapping block taps the back of the patient, andsecreta attached to the trachea, the bronchus and the lung is promoted to be loosened so as to be discharged conveniently.

The invention provides an airflow stirring device of a countercurrent extraction cylinder. The airflow stirring device comprises an extraction cylinder body, wherein a spiral stirring device is arranged in the extraction barrel body; a plurality of gas outlets are formed in the lower part of the center of the extraction cylinder body, and each gas outlet is fixedly connected with a corresponding branch gas pipe in a distributor; two ends of the distributor are respectively fixed on fastening assemblies on the surface of the extraction cylinder body through supporting rods, the distributor is horn-shaped, and one end of the distributor is fixedly connected with a nitrogen pipe; a flow regulating valve is arranged on the nitrogen pipe; a plurality of filter layers, a flow guide pipe and a main gas pipe are sequentially arranged in the distributor, a plurality of branch gas pipes sequentially extend from the main gas pipe, and each fastening assembly comprises a positioning plate and a limiting rod which are fixedly welded to the extraction cylinder body. The extraction time is shortened, the transfer rate is increased, and the cost is saved.

The invention belongs to the technical field of mutual inductors, and particularly relates to a non-contact disassembly detection mutual inductor. The non-contact disassembly detection mutual inductorcomprises a mutual inductor, wherein the mutual inductor comprises a cable clamping seat and a cable base which are arranged up and down, a hinge is arranged at one end of the junction of the cable base and the cable clamping seat, the cable base and the cable clamping seat are rotationally connected through the hinge, cable clamping grooves with arc structures are symmetrically formed in one end, which is abutted against the cable clamping seat, of the cable base, the cable base is internally provided with a magnet piece, two magnetic pole end columns on the magnet piece penetrate through the upper surface of the cable base, a reed switch is symmetrically arranged inside the cable clamping seat, two reeds are arranged inside the reed switch, and the ends, which are close to each other, of the two reeds are symmetrically connected with contact parts. According to the invention, the external structure of the mutual inductor is not changed, a non-contact and magnetic induction mode is adopted, and the looseness or opening detection of the opening is increased.

The invention discloses an efficient and automatic fruit receiving device for agricultural planting in the technical field of fruit receiving, the efficient and automatic fruit receiving device for agricultural planting comprises a frame, a sliding groove is formed in the frame, a first supporting shaft is slidably connected to the interior of the sliding groove in a limited mode, a soil turning plate is fixedly connected to the first supporting shaft, and an embedding groove is formed in the soil turning plate; a brush auger is rotationally connected into the caulking groove, a second supporting shaft is rotationally connected to the frame, a screening hopper is rotationally connected to the second supporting shaft, a connecting base is fixedly connected to the soil turning plate, a hinge plate is hinged between the connecting base and the screening hopper, an axle is rotationally connected to the frame, and wheels are fixedly connected to the two ends of the axle; a cam capable of pushing the soil turning plate to move in the direction away from the screen hopper is fixedly connected to the axle. The problems that fruits under soil are directly and violently produced by existing receiving equipment for receiving, so that the fruits are damaged, storage of the fruits is affected, and income is reduced due to difference of selling of the fruits are effectively solved.

The invention discloses a mulching soil removing device for a cave of phosphorite mine. The mulching soil removing device comprises a connecting plate, wherein two sides of the upper part of the connecting plate are provided with ear plates with shaft holes; a trapezoidal reinforcing plate is welded between the two ear plates; two or more than two arc-shaped toothed bars with bucket teeth are welded at the middle position of the bottom of the connecting plate; a strengthening plate is welded among the square peripheral edge of the connecting plate and the outer walls of the toothed bars; a distance between the upper end parts of two adjacent toothed bars is 40cm to 60cm; the inner sides of the arc-shaped curved surfaces of the toothed bars are provided with alloy protecting jackets through pin rolls; the upper parts of the bucket teeth are provided with tooth sleeves through pin rolls; the inner side walls of the lower parts of the bucket teeth are provided with two arc-shaped flow guiding grooves; the flow guiding grooves extend along a direction in which the bottoms of the bucket teeth point to the bottoms of the tooth sleeves. The depths of the flow guiding grooves are increased progressively along the extension directions of the flow guiding grooves, so that, along with the embedment of the bucket teeth, a space for releasing extrusion-force action among the inner side walls of the bucket teeth and a material matrix is increased step by step; the undercutting efficiency of the bucket teeth is further improved.

The invention provides an airport embedded light shockproof device. The airport embedded light shockproof device comprises a lamp liner, a positioning screw, a shockproof and waterproof rubber pad, ascrew hole, a lamp embedded part and a flange plate. The lamp liner is fixedly connected with the screw hole formed in the lamp embedded part through the positioning screw, the shockproof and waterproof rubber pad is arranged between the lamp liner and the lamp embedded part and is fixed by squeezing the lamp liner and the lamp embedded part, and the flange plate is fixed to the bottom of the lampembedded part by welding. A lamp can be embedded in the ground more firmly by adopting the welding fixation of the flange plate and the lamp embedded part and cooperating subsequent pouring of concrete, and the lamp is effectively prevented from being loose and falling off due to the vibration generated during takeoff and landing of an aircraft.

This application relates to a recycled aggregate screening device, which includes a frame, a screen cylinder rotatably connected to the frame, a drive assembly for driving the rotation of the screen cylinder, and a device on one side of the frame for feeding into the screen cylinder. The feed hopper of the material and the discharge hopper located under the screen drum; the frame is rotatably connected with a rotating rod whose rotation axis is parallel to the screen drum, and the rotating rod is provided with a plurality of telescopic rods arranged evenly around the circumference of the rotating rod , the end of the telescopic rod is provided with a rolling ball, and a spring is provided inside the telescopic rod to force the rolling ball to move radially away from the rotating rod; the screen drum is provided with a plurality of screen holes evenly arranged around the circumference of the screen drum, and the screen hole The outlet end is provided with an engaging surface 1 for the rolling balls to engage with. When the sieve drum rotates, the rotating rod is driven to rotate through the engagement of the rolling balls and the meshing surface 1 of the sieve holes. This application has the effect of reducing aggregate clogging.

The invention relates to a combined artificial femoral middle prosthesis which comprises a femoral shaft component, two femoral stem components and side plates, wherein the femoral stem components are assembled at two ends of the femoral shaft component, and the side plates are bolted on the femoral stem components. The femoral stem components are provided with coaxial and cylindrical stems, a first through hole, a second through hole and a third through hole are sequentially formed in each stem from head to root and radially staggered, portions of the side plates extending out of a second end are parallel to the stems, a gap is formed between the portion of each side plate and the corresponding stem, the wall of a human femur can be inserted into the gap, a fourth through hole is formed in each side plate and coaxial with the third through hole in the corresponding stem, and a side plate screw is jointly assembled by the aid of each fourth through hole and the corresponding third through hole. The combined artificial femoral middle prosthesis has the advantages that the prosthesis is reasonable in structural design and has excellent pulling resistance and rotating resistance, preparation and surgical operation are facilitated, the risk of looseness and subsidence of the prosthesis is reduced, and the prosthesis is suitable for reconstruction of femoral middle bone defects.

The invention discloses a multi-rod linkage fast digging and loosening robot, which belongs to the field of digging and loosening soil during plant transplantation or cultivation. It includes a base, a frame installed on the base, a lifting frame, and a lifting mechanism capable of driving the lifting frame to move up and down. The multi-rod linkage fast digging robot also includes two sets of orthogonal cutter heads, which drive the cutter heads away from each other. Or close to the cutter head couple separation mechanism, drive the cutter head couple to rotate inward or outward synchronously, the lifting mechanism can choose hydraulic cylinder drive mechanism, worm gear drive mechanism, gear box drive mechanism; motor Forward or reverse rotation makes the movable cutter head pair separation mechanism and the cutter head pair rotating mechanism move, thereby driving the cutter head pair to rotate. The invention is a multi-rod linkage rapid pit digging robot which is driven by a single machine to move a couple of degrees of freedom and can generate micro-vibrations to quickly dig pits and loosen soil.

The invention discloses an ultrasonic cleaning device for a film coated graphite frame, which comprises a cleaning tank, an ultrasonic vibrator mounting frame, an ultrasonic generator, a swing bearing frame, a supporting axle, a bevel gear, a driving gear, a servomotor and an electric control part, wherein the ultrasonic generator is arranged in the ultrasonic vibrator mounting frame, and is arranged at the bottom of the cleaning tank; the swing bearing frame is arranged in the cleaning tank in a swing mode; and the servomotor drives the swing bearing frame to reciprocate in a mode of meshed transmission of the driving gear and the bevel gear. The ultrasonic generator accelerates the reaction of a hydrofluoric acid solution and silicon nitride, and the left-right swing of the swing bearing frame increases the contact of the graphite frame and the hydrofluoric acid solution, can homogenize the concentration of the hydrofluoric acid solution in the cleaning tank and is more favorable for the reaction of the hydrofluoric acid solution and the silicon nitride. Compared with the prior art, the ultrasonic cleaning device is high in speed and good in cleaning effect and can remove silicon nitride or dirt attached to the corners of the graphite frame, and the circulating graphite frames required by production are only 1 / 2 of the graphite frames in the prior art.

The invention relates to an embedded laminated plate balancing block which comprises a foundation plate block, metal plate blocks and a lifting hook. The foundation plate block is overlaid with the metal plate blocks. The lifting hook is hooked to the upper end of a bolt-shaped installation column. The bolt-shaped installation column penetrates from the lower bottom portion of the foundation plate block upwards to the topmost metal plate block. The portion, on the topmost metal plate block, of the installation column is coaxially sleeved with a pressing plate. The pressing plate is locked to the installation column through a strong locking nut in a threaded meshed mode. The middles of the two sides of the foundation plate block are upwards provided with turn-back barbs which are overturned inwards, and the metal plate blocks overlaid on the foundation plate block are firmly, stably and fixedly installed together. According to the embedded laminated plate balancing block, due to the fact that the two sides of the foundation plate block are upwards provided with the turn-back barbs, the whole balancing block is more stable and is effectively prevented from being loosened and deviated, and the safety performance of the balancing block is improved.

The invention discloses a double-headed bucket hook structure for a large excavator, which includes a connecting plate, ear plates with shaft holes are installed on both sides of the upper part of the connecting plate, and a trapezoidal reinforcement plate is welded between the two ear plates. Two or more arc-shaped gear bars with bucket teeth are welded in the middle of the bottom of the connecting plate, and a reinforcing plate is welded between the square peripheral edge of the connecting plate and the outer wall of the gear bar, two adjacent The distance between the upper ends of the tooth bars is 40-60cm. An alloy sheath is installed on the inner side of the curved surface of the tooth bar through a pin shaft, and a gear sleeve is installed on the upper part of the bucket teeth through a pin shaft. Two arc-shaped diversion grooves and protrusions are respectively arranged on the wall, and the protrusions and diversion grooves respectively extend along the direction from the bottom of the bucket teeth to the bottom of the tooth sleeve. The depth of the diversion groove increases along its extension direction, so that with the deepening of the bucket teeth, the space for releasing the extrusion force between the inner wall of the bucket teeth and the material matrix gradually increases, further improving the cutting efficiency of the bucket teeth.

The invention discloses a cellucotton opener that comprises a box body, wherein a feeding hopper is in communication with the top wall of the interior of the box body, a third rod body is rotationallyconnected with the inner side wall of the box body through a bearing, a smashing roller is welded to the outer side wall of the third rod body, second rod bodies are evenly welded to the outer side wall of the smashing roller, a first shell is in communication with the inner side wall of the box body, a third motor drives a first conveying belt to convey cellucotton raw materials into the feedinghopper, and a fan blows heat of a heating rod into the box body to heat the cellucotton raw materials, so that the cellucotton raw materials are fluffy and can be scattered more easily, the looseningspeed can be increased, and the processing quality can be improved; an exhaust fan is started, negative pressure is formed at the joint of a fourth shell and the box body, dust and fluff fibers are absorbed into the fourth shell and collected into the fourth shell through a first filter plate, fluff chippings and impurities generated in a machining process are collected, and the influence on theworking environment and the production quality is reduced.