90results about How to "Achieve reduction" patented technology

The invention discloses an electromagnetic wire self-adhesion performance data acquisition and intelligent analysis method, and relates to the technical field of data analysis. Multi-source data such as turn-to-turn gap, paint layer residual thickness, tension fluctuation and conduction state are synchronously acquired in the winding process; and analysis mechanisms such as a gap reduction rate, paint layer thinning distribution, a synchronous evolution track and a gap strength response curve are introduced, so that continuous modeling and quantitative characterization of the autohension performance evolution process are realized. Compared with the prior art which only depends on a single gap threshold value or a post mechanical test to judge the bonding performance, the method can be started from a complete physical chain from gap change to paint layer extrusion to metal contact to bonding failure, and the change trend of the bonding performance under different gap levels can be accurately revealed; and tension output is corrected in real time through a self-adaptive algorithm, closed-loop optimization of the bonding quality is achieved, and the product percent of pass and the production efficiency are improved.

This utility model discloses a building construction material processing and cutting mechanism, comprising: an operating table with a fixed groove, a lifting transmission box fixedly connected to the upper surface of the operating table, a lifting threaded rod movably connected to the upper surface of the lifting transmission box, a lifting plate threadedly connected to the side surface of the lifting threaded rod, and a pressure plate fixedly connected to the lower surface of the lifting plate; and a fixed plate with a movable threaded rod movably connected to its side surface, a movable plate threadedly connected to the side surface of the movable threaded rod, a clamping plate fixedly connected to the lower surface of the movable plate, and a cutting blade movably connected to the side surface of the clamping plate. Through this structure, automated fixing and cutting of building construction materials are achieved, keeping the material stable during cutting and preventing it from moving or popping out. It can meet the cutting requirements of materials of different shapes and sizes, ensures consistent cutting accuracy, and improves the cutting efficiency and applicability of the cutting mechanism.

The utility model provides a surface acoustic wave device. The surface acoustic wave device comprises a piezoelectric composite substrate and a metal structure located on the piezoelectric composite substrate. The piezoelectric composite substrate comprises a silicon substrate; the crystal elastic constant of the silicon substrate is a six-order matrix Cij, 0lt; i < = 6, 0lt; j < = 6, and i and j are integers; the silicon substrate has an Euler angle, and the absolute value of C15 in an elastic constant Cij defined by the Euler angle is greater than or equal to 2 * 10 < 9 > Pa. Namely, the Euler angle is set, and the absolute value of the elastic constant C15 of the silicon substrate is defined to be greater than or equal to 2 * 10 < 9 > Pa, so that the parasitic response generated by a high-order stray mode at high frequency is effectively eliminated or reduced, and the suppression capability of a stop band is improved. Compared with the prior art, the surface acoustic wave device provided by the utility model not only has a better inhibition effect on a high-frequency parasitic mode and improves the performance of the device, but also does not occupy the effective area of the device, is beneficial to the miniaturization development of the device, and is simple in process preparation.

The utility model relates to four pests kill equipment technical field, and disclose a kind of spraying device for four pests kill, including spraying box, spraying pipe being installed in the bottom of spraying box, setting in the back strap of spraying box one side, the feed inlet being opened in the top of spraying box, the flow guide plug being set in the inside of feed inlet and the sealing cover being clamped in the inside of flow guide plug, the flow guide plug is located inside feed inlet and is fixedly connected with its inner wall, the flow guide plug presents annular, the inside of flow guide plug is provided with arc pipe, one side of arc pipe is equipped with opening, the utility model is through "dynamic scraping-multistage flow guide-bidirectional sealing" synergic mechanism to realize the effect that bottle mouth bottle cap place reagent residue reduces, the integrated structure of flow guide plug and the scraping flow guide design of sealing cover, cooperate interference sealing design, greatly improve sealing property and operation convenience, solve the defect existing in the bottle cap design of the reagent of current four pests kill.

The invention discloses an organic phosphorus wastewater degradation and phosphorus recovery experimental device and method, and particularly relates to the field of organic phosphorus wastewater treatment.The organic phosphorus wastewater degradation and phosphorus recovery experimental device comprises an electric reaction box, a recovery reaction unit capable of performing electrochemical reaction is arranged in the electric reaction box, and a water inlet pipe and a water outlet pipe are arranged between the two sides of the recovery reaction unit and the electric reaction box respectively; the recovery reaction unit comprises a water storage reaction box, a Fe3O4-coated N-GO negative plate and a titanium platinum positive plate are arranged in the water storage reaction box, the Fe3O4-coated N-GO negative plate is used for preparing Fe3O4-coated N-GO by adopting a one-step hydrothermal method, the Fe3O4-coated N-GO is loaded on an electrode, and the Fe3O4-coated N-GO negative plate has excellent electron transfer efficiency and catalytic activity. The organic phosphorus wastewater can be completely degraded within 40 minutes, and the PO4 < 3-> conversion rate is 35%; by constructing a continuous operation system for electrochemical degradation and recovery of the organophosphorus wastewater, efficient degradation and detoxification of the organophosphorus wastewater are realized, released phosphorus is recovered, and the method has practical significance of reducing treatment cost and increasing economic benefits.

The invention discloses an energy-saving intelligent production line for equal-weight cutting of fresh meat, and relates to the technical field of meat cutting, the intelligent production line comprises a rack, a first conveying belt and a second conveying belt are arranged on the rack, the intelligent production line further comprises a tool changing unit, and the tool changing unit comprises a chopping framework and a meat cutting frame; a bone chopping frame is arranged on the portion, located on one side of the second conveying belt, of the rack, a bone chopping knife moving in a reciprocating mode is installed on the bone chopping frame, a meat cutting frame is arranged on the portion, located at the gap position of the first conveying belt and the second conveying belt, of the rack, and a meat cutting knife capable of swinging in a reciprocating mode is arranged on the meat cutting frame. The bone chopping knife is used for cutting the rod bone; when the meat cutter is located at the cutting position, the meat cutter is used for cutting fresh meat; when fresh meat needs to be cut, the meat cutter swinging in a reciprocating mode is used for conducting equal-weight cutting operation on the fresh meat, and when the bone needs to be cut, the bone chopping cutter moving in a reciprocating mode is used for conducting cutting operation on the bone.

The invention discloses a plate cutting machine, and belongs to the technical field of plate cutting equipment. Comprising a machine body, a conveying mechanism and a shearing mechanism, the shearing mechanism comprises two pairs of first hydraulic cylinders, a knife rest and two cutting knives, the two pairs of first hydraulic cylinders are symmetrically, vertically and fixedly installed on the inner side of the machine body, and the upper ends and the lower ends of the two pairs of first hydraulic cylinders are fixedly connected with the machine body; the conveying mechanism comprises a supporting frame, two sets of pushing assemblies, two sets of limiting assemblies and two sets of adjusting assemblies, the two sets of pushing assemblies are symmetrically arranged on the upper side and the lower side of the supporting frame, the two sets of limiting assemblies are symmetrically arranged on the upper side and the lower side of the supporting frame, and the two sets of limiting assemblies are symmetrically arranged on the upper side and the lower side of the supporting frame. Clamping mechanisms are symmetrically arranged on the upper side and the lower side of the machine body and used for clamping the plates. The problems that a hydraulic cylinder can only work once in one lifting process, the shearing operation period is long, and the operation efficiency is low are effectively solved.

This invention discloses a method for the comprehensive utilization of sulfide tailings, relating to the field of sulfide tailings treatment technology. This method uses lead-zinc tailings as raw material and innovatively employs a combined "two-stage acid leaching-gravity separation-flotation" process. First, two stages of acid leaching selectively leach calcite associated with barite in the tailings, reducing the influence of muddy calcite while activating pyrite. Subsequently, the acid leaching residue undergoes gravity separation to further separate undissolved calcite, quartz, and other silica-containing gangue minerals. The gravity concentrate is then subjected to flotation to achieve the separation of barite and pyrite, ultimately obtaining high-purity barite and pyrite products respectively. This invention features a reasonable process route and simple operation, effectively solving the separation problem of fine-grained, high-viscosity lead-zinc tailings, achieving full-component purification and utilization of lead-zinc tailings, significantly enhancing the economic value of tailings resources, and reducing the environmental pressure caused by tailings stockpiling, thus demonstrating good economic, environmental, and social benefits.

The application provides a kind of equipment residual life adaptive prediction method of fusion multi-source data, it is related to equipment residual life prediction technical field, specific steps include: obtaining the equipment operating data and corresponding environmental parameters under different working conditions, construct the first data set;Each source feature vector is constructed, uniform dimension mapping is executed, global degradation reference construction and deviation representation processing between sources are carried out, and life sensitive source sequence is obtained;Degradation stage feature is constructed and stage difference representation processing is carried out, and stage memory sequence is obtained;Life reduction feature is constructed and degradation consumption representation processing is carried out, and basic residual life reduction sequence is obtained;Working condition deviation feature is constructed according to basic residual life reduction sequence, life sensitive source sequence end time feature and stage memory sequence end time feature, and residual life correction quantity is generated;The equipment residual life prediction result is obtained according to basic residual life reduction sequence and residual life correction quantity.

The application discloses a kind of equipment and control method for automatically fish slice defect finishing.The equipment includes fish slice single piece loading unit, image acquisition and processing unit and finishing unit.Fish slice single piece loading unit utilizes the action of gravity to disperse and load the fish slice overlapping to image acquisition area;Image acquisition and processing unit, image acquisition and processing unit are used to collect fish slice defect image, and real-time picture information is transmitted to industrial computer, and the fish slice defect detection network based on YOLOv8 model improved in the middle part of industrial computer is used to identify defect area and plan defect finishing track;Finishing unit receives track and posture information from industrial computer, and accurately finishes fish slice, so as to complete the process of fish slice loading, detection and finishing.The application replaces traditional manual finishing mode by automatic processing, realizes real-time finishing of fish slice defect, effectively improves the operation efficiency and product quality of fish slice processing.

This application relates to the technical field of structural dynamics testing equipment, and discloses a device and method for combined control of magnetorheological fluid and metal spring sheet for drop hammer impact testing. The device includes: a test bench comprising a rigid base, a vertical support column, and a horizontal fixed beam; a drop hammer system for lifting and releasing the drop hammer body; a combined control loading system for providing stiffness support; a uniformly distributed load transfer system for receiving the impact load and converting it into a line load for transfer to the beam / column component under test; a parameter monitoring system for data acquisition; and a control system for controlling the release of the drop hammer body and adjusting the current of the excitation coil. This invention, by employing the combination of magnetorheological fluid and metal spring sheet, and utilizing the synergistic effect of the continuously adjustable damping of the magnetorheological fluid and the stiffness support of the metal spring sheet, can achieve impact pulse trimming, thereby avoiding the shortcomings of traditional airbag and rubber loading methods, such as narrow control range and low precision.

The utility model relates to the technical field of thin film processing, in particular to a waterproof film cutting device which comprises a cutting platform and a cutting mechanism and is characterized in that a cutting groove is formed in the middle of the cutting platform in a penetrating mode, the cutting mechanism comprises a driving air cylinder, a first rotating arm, a second rotating arm, a sliding rod and a cutting tool apron, and a pressing mechanism is arranged at the upper end of the cutting platform. The pressing mechanism comprises a mounting frame, a pressing air cylinder and a pressing strip, the mounting frame is fixedly arranged at the upper end of the cutting platform, the pressing air cylinder is rotationally arranged at the upper end of the mounting frame, the telescopic end of the pressing air cylinder faces downwards, and the pressing strip is fixedly arranged at the telescopic end of the pressing air cylinder and corresponds to the cutting groove. According to the waterproof breathable film cutting device, the driving air cylinder drives the second rotating arm and the first rotating arm to rotate relative to each other, so that the cutting tool apron moves on the sliding rod, and a waterproof breathable film is cut; and the pressing mechanism is used for pressing, so that the film is prevented from wrinkling in the cutting process, and the flatness of the cutting edge is guaranteed.

This invention discloses a worm gear and forming wheel composite gear grinding machine for processing large gears, including a bed and a workpiece clamping mechanism and a composite machining mechanism arranged opposite to each other on the bed. The composite machining mechanism includes a column, a column slide plate, and a rotary table. The column is slidably mounted on the bed, and the column slide plate is slidably connected to the column. One side of the rotary table is rotatably connected to the column slide plate, and the other side of the rotary table is connected to a grinding feed assembly and a dressing feed assembly. The grinding feed assembly includes a grinding slide plate that slides along a first direction, a grinding spindle mounted on the grinding slide plate, and a grinding wheel. The dressing feed assembly includes a dressing slide plate that slides along a second direction and a dressing assembly. The grinding feed assembly and the dressing feed assembly are used for workpiece processing and grinding wheel dressing, respectively. This invention integrates grinding and dressing on the same rotary table, shortens the transmission chain, and realizes rapid switching between processing and online grinding wheel dressing.

This invention relates to the field of iron ore beneficiation technology and discloses a method for preparing efficient roasting and separation of refractory iron ore, comprising the following steps: S1, raw material pretreatment and pre-enrichment: refractory weakly magnetic iron oxide ore is crushed, and a dry separation method is used to pre-remove some low-grade waste rock to obtain pre-enriched rough concentrate; S2, intelligent grinding and drying; S3, magnetized roasting; S4, rapid quenching and stabilization of roasted ore. This invention, through rapid cooling (quenching) combined with an atmosphere protection process, stabilizes and solidifies the magnetism of the magnetized roasting product—magnetite—avoiding magnetic loss due to subsequent processing, providing a high-magnetic, stable feed for subsequent weak magnetic separation operations, which is a prerequisite for ensuring a high magnetic separation recovery rate; through strong magnetic separation to ensure recovery rate, combined with intelligent flotation to improve concentrate grade, a deep cleaning process is formed, achieving refined separation of complex roasting products, maximizing both the total iron metal recovery rate and concentrate grade simultaneously.

The utility model discloses an automatic feeding cutting machine tool which comprises a machine frame, a cutting part and a feeding part, the cutting part is arranged at the top of the machine frame and provided with a supporting frame arranged at the top of the machine frame, a lifting frame is vertically arranged in the supporting frame in a sliding mode, and the feeding part is arranged at the top of the machine frame. The feeding part is provided with a movable base arranged at the top of the rack in a sliding mode, a rotating table is horizontally and rotationally arranged at the top of the movable base, a clamping structure used for fixing materials is arranged at the top of the rotating table, and a limiting rod is vertically and slidably arranged at the top of the rotating table. By arranging the feeding part, the lifting frame can be driven by the telescopic rod to move up and down, so that the height of the cutting machine is adjusted, and materials with different thicknesses are cut; and meanwhile, a movable base of the feeding part can slide along the rack, a rotating table can horizontally rotate, and the angle is fixed through a limiting rod, so that the positions of the materials can be flexibly adjusted, and the cutting precision and efficiency are improved.

The utility model discloses a cup blanking die, and relates to the field of dies. Comprising an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die plate, a stamping column and an upper stamping table, an elastic telescopic assembly is arranged between the upper die plate and the upper stamping table, and a discharging groove and a forming cavity are formed in the lower die assembly. A steel coil is firstly clamped and fixed through a discharging groove and an upper stamping table, then in the process that a stamping column continuously gets close to a forming cavity, the stamping column and the forming cavity are matched to stamp the steel coil, an elastic telescopic assembly is made to compress and drive the upper stamping table and the discharging groove to be matched to cut the steel coil, and in the stamping process, the stamping efficiency is improved. The upper punching table and the discharging groove clamp and fix the steel coil, so that the steel coil is not prone to deviation, the punching precision is higher, punching and cutting are achieved at the same time, and the production efficiency is high.

The utility model discloses an industrial wastewater biochemical system sludge treatment system, it belongs to industrial wastewater treatment field, it will fluid power cavitation, thermal effect and alkaliolysis effect system integration, break through the limitation of single technology, realized the high -efficient sludge disintegration under low energy consumption. It mainly includes sludge pump, the sludge pump is connected with the pretreatment unit through valve no.

The utility model discloses a kind of feeding structures for pipe processing, including feeder, the outside of feeder is equipped with chuck for clamping square tube section, the outside of chuck is equipped with drive box, the drive box includes two symmetrically arranged swing arms, the drive box is connected with sliding seat by crossbeam, laser cutting cabinet is equipped on the sliding seat, the bottom of laser cutting cabinet is equipped with cutting head, two the swing arm is used to clamp square tube section after cutting, the drive box is equipped with cylinder on the side away from chuck, corner at the other side is equipped with rotating shaft, the swing arm is fixed at the bottom of rotating shaft, the cylinder is rotated by inside connecting rod structure and drives rotating shaft;The feeding structure for pipe processing can realize the feeding and cutting of square tube section when in use, and the overall degree of automation is high, can effectively improve production efficiency, is suitable for use widely.

The utility model discloses a kind of slicing equipment for dried pork processing, including cutting table, cutting groove is opened in the top of cutting table, center block and baffle are arranged on cutting groove, the center block is arranged at the center line of cutting table, the baffle one end is connected with cutting groove inner wall, the other end is connected with the outer wall of center block, cutting groove inner wall, the outer wall of center block and the sidewall of two baffles form a frame space, and in the space, pressure plate is slidably arranged, there is a gap between the baffle and center block and the groove bottom of cutting groove, by putting meat block into cutting groove inner wall, the sidewall of two baffles form a frame space, slide bar is pushed under the spring elastic force, and meat block in space is pressed by pressure plate, motor drives rotating block to rotate, so that cutting blade cuts the bottom of meat block when passing through meat block, and the sliced meat piece cut down is pushed to storage tank by subsequent push plate, realize the cutting of meat block.

The invention discloses a household garbage furnace energy-saving combustion and waste heat recovery system containing biomass gasification synergy. The problems that in the prior art, mixed combustion of household garbage and kitchen garbage residues is insufficient, garbage leachate is difficult to treat, the biomass energy utilization rate is low, and waste heat is wasted are solved. The system comprises a household garbage furnace body, a vortex intensified combustion device, a waste heat absorption device, a biomass gasification collaboration device, a garbage leachate treatment device and a vacuum drying device. The vortex intensified combustion device is arranged in the furnace arch area, so that high-temperature flue gas forms vortexes to prolong the retention time and intensify combustion; the waste heat absorption device absorbs flue gas waste heat, and the vacuum drying device uses the waste heat to dry kitchen garbage residues; the biomass gasification synergy device generates and conveys biomass gas, the landfill leachate treatment device sprays leachate into the furnace, and the leachate and the biomass gas are subjected to opposed firing. According to the system, multi-class solid waste cooperative treatment and energy gradient utilization are achieved, the combustion efficiency and the environmental protection property are improved, and energy consumption is reduced.

The utility model relates to packing auxiliary equipment technical field especially, a kind of packing bag distribution device of supermarket cashier desk.Its technical scheme includes mounting seat, the top of mounting seat is equipped with the bracket for installation, the side of bracket is equipped with the reel for the packing bag roll of sleeve setting, the top of mounting seat is equipped with the vertical plate for installation, two conveying rollers for conveying are movably arranged on the vertical plate, the top of mounting seat is equipped with the support table for support, the top of support table is equipped with the cutting structure for cutting, the cutting structure includes two limiting seats for installation, knife seat for cutting and cutting knife arranged at the bottom between the two limiting seats are equipped, the utility model is provided by PLC, motor one, eccentric disc, vertical rod, pressing plate and knife seat, can realize the cutting of packing bag, without manual tearing by cashier, can effectively prevent the phenomenon that packing bag is torn and broken.

The utility model discloses a watch sapphire glass cutting device which comprises a bearing plate, the top of one end of the bearing plate is fixedly connected with a transmission seat, the inner side of the transmission seat is rotationally connected with a transmission screw, one end of the transmission seat is fixedly connected with a transmission motor, and the output end of the transmission motor is fixedly connected with the transmission screw. The outer side of the transmission screw is in threaded connection with a displacement frame, the top end of the displacement frame is rotationally connected with a cutting shaft rod, one end of the cutting shaft rod is fixedly connected with a cutting disc, and a transmission assembly is arranged at the top end of the inner side of the transmission seat. According to the sapphire glass bar cutting device, through structural cooperation of the transmission motor and the transmission assembly, power of the transmission motor can be transmitted through the chain, the transmission assembly is promoted to rotate in the moving process, and therefore cutting of sapphire glass bars can be achieved under the condition that excessive power sources are not used.

This invention relates to the field of solid waste treatment technology, and in particular to a method for multi-stage countercurrent water washing and dechlorination of waste incineration fly ash with a low liquid-to-solid ratio. This invention combines low liquid-to-solid ratio water washing with countercurrent water washing, and utilizes a rotary vibrator to achieve effective dechlorination of waste incineration fly ash, ultimately obtaining water-washed fly ash with a chlorine content of less than 1%. Compared with existing technologies, this invention organically combines low liquid-to-solid ratio water washing, countercurrent water washing, and a rotary vibrator, balancing dechlorination efficiency and water resource utilization. The process is stable and reliable, simple to operate, and has low energy consumption. The treated fly ash meets the requirements for subsequent resource utilization, providing an efficient and feasible new solution for the harmless treatment and resource recovery of waste incineration fly ash.

The invention discloses a full-automatic ton bag unpacking machine. Comprising a rack, a sliding rail arranged on the upper portion of the rack, an electric hoist moving along the sliding rail, a bag hanging assembly connected with the electric hoist and a temporary storage hopper assembly arranged in the middle of the rack. The sealing bin assembly is located below the temporary storage hopper assembly and can ascend and descend relative to the temporary storage hopper assembly; the bag opening assembly is arranged on the sealing bin assembly and integrally extends into a sealing bin for operation; the slide rail is used for limiting the motion path of the electric hoist; the bag hanging assembly is used for fixing bag lugs of the ton bag, so that the ton bag is kept in a stable posture in the lifting and moving process; the buffer hopper assembly is used for receiving materials discharged from the ton bags; the sealing bin assembly is in sealing connection with the buffering hopper assembly in the unpacking and discharging process and used for constructing a relatively-closed operation space to restrain dust from escaping. According to the unpacking device, the synergistic effect of automation, sealing and high efficiency is achieved, and dust pollution and manual labor intensity are reduced while the unpacking efficiency is improved.

The application relates to a semiconductor diode pin bending forming device, which comprises a conveying mechanism, two resisting plates and two bending mechanisms; the conveying mechanism is used for conveying diodes; the two resisting plates are used for resisting two diode pins one by one; the two bending mechanisms are located on the two sides of the conveying mechanism in a second direction, and the bending mechanisms are located between the conveying mechanism and the resisting plates; the bending mechanism comprises a support, a cutter, a bending plate and a driving part; when the bending mechanism is located at a cutting position, the upper end of the cutter is located above the movable end and below the accommodating groove; the bending plate is rotated to drive the upper end of the cutter to be close to the resisting plate; the cutter and the resisting plate jointly cut the end part of the diode; when the bending mechanism is located at a bending position, the movable end is located above the connecting end and above the accommodating groove; the bending plate is rotated to be close to the accommodating groove, so that the diode pin is bent. The application has the effects of improving the processing efficiency of the diode and shortening the processing time.

The application discloses a cutting device for cable protection pipe production and relates to the technical field of cutting devices.The cutting device comprises a frame one, a plate two is movably arranged on the inner side of the frame one, a configuration mechanism is arranged on the front of the plate two, the configuration mechanism comprises a connecting rope and a counterweight, one end of the connecting rope is connected with one end of the plate two, and the other end of the connecting rope is provided with the counterweight.The cutting device can make the cutter move backward together with the cable when the cable is cut, the cable can be cut without stopping, and the cutting efficiency is improved;after the cable protection pipe is cut by the cutter, the counterweight moves downward under the action of gravity, thereby driving the connecting rope to move downward;when the connecting rope moves downward, the plate two is driven to move forward, and then the plate two can return to the front without using a transmission device, cost is saved, and the plate two can move backward together with the cable protection pipe to realize the cutting of the cutter on the cable protection pipe.

This invention discloses an apparatus and method for achieving deep nitrogen removal and phosphorus recovery through dual short-range coupled anammox fermentation using in-situ sludge fermentation. First, calcium chloride solution is added to the anammox reactor at the rear end of a two-stage PNA process to form recoverable phosphorus crystals such as Ca-P precipitates. Anaerobic ammonia oxidizing bacteria attach to the surface of the precipitates, thereby enriching and retaining them within the anammox reactor. During the continuous formation of anaerobic ammonia oxidizing particles, unfermented waste activated sludge is added to the PNA process. The slow hydrolysis and acidification of the waste activated sludge provide a carbon source for the short-range denitrifying bacteria, completing the transformation from single-stage PNA autotrophic nitrogen removal to dual short-range coupled anammox synergistic nitrogen removal. In this invention, the anaerobic ammonia oxidizing bacteria in the granular sludge after operation can reach 12%, 73% of the sludge exhibits a particle size greater than 200 μm, and the total nitrogen removal rate remains above 90%, with most phosphorus existing in the recoverable form of Ca-P crystals.

This utility model discloses an outer tube cutting tool for double-layer sleeve hot-melt butt welding, relating to the field of pipe cutting technology. It includes a milling cutter body, with a movable milling cutter body hinged to one end. A cutter head assembly is installed between the milling cutter body and the movable milling cutter body. The milling cutter body includes a main body shell, inside which a transmission gear is installed. A drive motor is installed on the top side of the main body shell, and the output shaft of the drive motor is connected to the drive gear. The drive gear meshes with the transmission gear, which in turn meshes with the cutter head assembly. The cutter head assembly includes a first sector gear ring and a second sector gear ring, which combine to form a complete ring. Cutting discs are symmetrically installed at both ends of the ring. The cutter head assembly is positioned and limited during assembly by the cooperation of the milling cutter body and the movable milling cutter body, and during assembly, it crosses the inner tube to cut the end face of the outer tube.

This invention discloses a glass substrate grinding device, relating to the field of material processing technology. It includes a base and a grinding disc. A robotic arm is mounted on the top of the base. The outer periphery of the grinding disc is covered with V-shaped grinding grooves. It includes a connecting ball, one end of which is connected to a rotating rod. The rotating rod is rotatably connected to the side wall of the base via a ball-shaft. An installation port is provided on the connecting ball. In this invention, the grinding disc is connected to a connecting frame and a rotating shaft. The robotic arm drives a switching mechanism to move these components. The outer periphery of the grinding disc has V-shaped grinding grooves pointing in the same direction. During rotation, the glass substrate is ground, and debris is ejected from the grinding grooves under centrifugal force. The grinding disc rotates towards the grinding grooves. When the left-right movement direction changes, the robotic arm pulls an elastic coil, which in turn pulls the rotating shaft and causes the grinding disc to rotate, so that the tips of the grinding grooves face the direction of movement, thereby achieving grinding and finishing of the glass substrate.

The utility model relates to the seaweed wastewater treatment field relates to a device of recycling salt alkali and organic matter in seaweed wastewater, the utility model device, include: pretreatment unit, filter adsorption unit, membrane separation unit and collection unit, pretreatment unit includes cyclone desander and multistage sedimentation tank, filter adsorption unit includes multistage sand filter jar and disc filter, membrane separation unit includes alkali -resistant nanofiltration ware and reverse osmosis membrane group, collection unit includes thick water collection jar no.