147results about How to "Stable separation" patented technology

The invention discloses a forming die and a forming method for a barrel with grid ribs, and belongs to the technical field of forming dies, the forming die comprises a male die assembly used for supporting the inner side of a barrel product and comprising a core barrel and a plurality of male die rings detachably connected with the core barrel; the two pressing rings are connected with the core cylinder; the female die assembly is used for supporting the outer side of the cylinder product and is formed by splicing a plurality of female die splicing blocks, the female die splicing blocks are detachably connected with the pressing ring, and a cavity for manufacturing the cylinder product is defined by the female die splicing blocks, the male die ring and the pressing ring; and the two supporting rotating shafts are used for transmitting rotating torque. The forming method comprises the steps that the core cylinder and the male die ring are installed at first, then materials are wound, and finally the female die splicing blocks are installed; heating, forming and cooling; the female die splicing blocks are dismantled firstly; and then the core cylinder is disassembled, and the male die splicing block is taken down. The difficulty of demolding the barrel product from the mold is effectively reduced, the material can be smoothly separated from the mold, and the original structure is kept, so that the quality of the product is improved, and the production requirement is met.

The invention relates to the technical field of semiconductors, and discloses a semiconductor wafer clamp and semiconductor equipment. The semiconductor wafer clamp comprises a clamp body and a refrigeration structure, the clamp body comprises a base, a sealing ring and a pressing disc, the sealing ring is installed on the base, and the sealing ring is configured to make contact with a wafer part so that the part, making contact with the wafer, of the sealing ring can be sealed under the action of external pressure; the pressure plate can be arranged on the base in a covering manner so as to apply sealing external pressure to the wafer and press the wafer against the sealing ring; and the refrigeration structure is arranged on the clamp main body and can cool the wafer in contact with the sealing ring after the wafer carried by the clamp main body is taken out from the preset medium, so that the part, in contact with the sealing ring, of the wafer is converted into a non-adhesion state from an adhesion state. According to the semiconductor wafer clamp, the deposited wafer can be cooled, adhesion of photoresist and the sealing ring is avoided, and the situation that the wafer is broken or the sealing ring is pulled away from the base when the wafer is taken out of the clamp is avoided.

The invention discloses assembly type outer wall hoisting equipment, and relates to the technical field of building construction. The adjusting and adapting mechanism is located above the outer wall body. The number of the positioning mechanisms A is two, and the two positioning mechanisms A are installed at the top of the adjusting and adapting mechanism. The number of the connecting mechanisms is two, and the two connecting mechanisms are installed at the left end and the right end of the adjusting and adapting mechanism. The number of the guiding mechanisms is two, and the two guiding mechanisms are installed on the adjusting and adapting mechanism. The hoisting mechanism is mounted at the top end of the adjusting and adapting mechanism; the number of the positioning mechanisms B is two, and the two positioning mechanisms B are mounted on the front side and the rear side of the hoisting mechanism; a worker can conveniently and properly adjust the positions of the two movable adaptive frames according to the size of the outer wall body; the problems that generally, only walls of the same model can be hoisted, proper adjustment cannot be conducted according to the sizes of the walls, and the universality is low are solved.

The invention discloses an MIM injection molding multi-mold-cavity precise magnetic attraction part suction method, and belongs to the technical field of MIM injection molding molds and production devices. Injection molding is carried out on the basis of a glue feeding mode of point glue feeding, and the point gate can be located on the concave surface of the product, so that the contact surface of the gate and the product body is small, the gate can be conveniently removed in a mold when the mold is opened, and the integrity of the molded product is guaranteed; by means of the magnetic type material taking jig, the problem that due to the fact that a protruding mold core is arranged on a female mold, the contact force between a formed product and the female mold is large, and demolding is difficult can be solved, and rapid material taking and discharging are achieved; according to the magnetic type material taking jig, the magnetic type material taking jig is in positioning contact with a product in advance, then adsorption / separation is conducted through the movable magnet, and meanwhile the separation air cylinder is arranged in a matched mode, so that material taking and discharging operation can be conducted rapidly and accurately.

The invention discloses a method for preparing a metal casting mold based on steel grit 3D printing, and belongs to the technical field of metal casting mold machining. In order to solve the technical problem that in the prior art, the mechanical strength and collapsibility of a metal casting mold need to be further improved, the method for preparing the metal casting mold based on steel grit 3D printing comprises the following steps that a sand mold three-dimensional model is established according to a metal casting, then casting mold steel grit is filled in an operation box of sand mold 3D printing equipment, and the casting mold steel grit is obtained; the binder storage tank is filled with a binder; and according to the section formation of the sand mold three-dimensional model, a sand paving system of the sand mold 3D printing equipment paves cast steel sand on a printing platform. The casting steel sand and the binder are matched with each other, the metal casting mold blank is prepared through 3D printing and then dried, the normal-temperature mechanical property and high-temperature property of the metal casting mold are effectively improved, the application range of the metal casting mold is widened, and meanwhile the collapsibility of the metal casting mold is improved.

The utility model discloses an oil-water separator with a filtering device, and relates to the field of oil-water separation equipment, the oil-water separator comprises a separation mechanism and a sedimentation mechanism, the separation mechanism comprises a treatment box, the oil-water separator is provided with an aeration mechanism, a water inlet bin receives and temporarily stores an oil-water mixture, it is ensured that the oil-water mixture uniformly flows into a subsequent separation bin, and the oil-water separation efficiency is improved. An aeration mechanism is arranged at the bottom of a partition plate of a water inlet bin, when gas is injected through an aeration opening, a large number of tiny bubbles are generated, the bubbles make contact with an oil-water mixture in the rising process, and the oil-water separation effect is improved. According to the present invention, the gas is introduced into the water inlet chamber, the adhesion action is utilized to carry tiny oil drops to float, such that the oil drop separation is accelerated, the separation time is shortened, the aeration mechanism ensures that the gas is uniformly dispersed in the water inlet chamber, and especially the wedge-shaped surface increases the contact area of the gas and the mixture, and improves the oil drop capturing efficiency.

The invention discloses a jet form and satellite droplet behavior size control device and method. A nozzle of a liquid drop generator of the device generates jet flows in different forms, and main liquid drops and satellite liquid drops in the jet flows are different in motion state; the liquid drop control assembly is located under the liquid drop generator and used for adjusting the form of jet flow and controlling the behavior size of satellite liquid drops. And the liquid drop image acquisition assembly is positioned on the side of the liquid drop control assembly and is used for dynamically acquiring the form of the jet flow and the behavior size of the satellite liquid drop. The jet flow form and the generation process of the satellite liquid drops can be accurately controlled, stable separation and size adjustment of the satellite liquid drops are achieved, jet flow and liquid drop behaviors can be monitored in real time, it is ensured that the satellite liquid drops and main liquid drops are kept relatively stable before being separated from the main liquid drops, the sizes of the liquid drops can be secondarily regulated and controlled, and the stability of the liquid drops is improved. And a micron-sized electrode is used for accurately intervening in a jet local area, a breakthrough of smaller satellite droplet size is formed, and the method can be widely applied to high-precision droplet control requirements.

The invention provides a shot blasting treatment system which comprises a shot blasting box body, one side of the shot blasting box body is provided with a door body, the top of the shot blasting box body is further provided with a shot blasting device, and the shot blasting device is provided with a jet orifice which is located in the shot blasting box body and is arranged downwards; a plurality of small holes are formed in the vibration disc, and a guide-out opening is further formed in the side, facing the door body, of the vibration disc; a vibration cross rod is installed in the shot blasting box body, one end of the vibration cross rod penetrates out of the shot blasting box body and is connected with a vibration motor, and the vibration disc abuts against the vibration cross rod. A fixed suspender and a telescopic suspender are further fixedly arranged in the shot blasting box body, the fixed suspender is close to the door body and is connected with the vibration disc through a first inhaul cable, the telescopic suspender is far away from the door body and is connected with the vibration disc through a second inhaul cable, and the telescopic suspender can further rotate to wind the second inhaul cable. The problem that in the prior art, when a small-size metal workpiece is subjected to shot blasting treatment, steel grit and impurities possibly cause clamping of internal assemblies, and the overall shot blasting treatment efficiency is reduced is solved.

The invention relates to the technical field of photovoltaic glass recovery equipment, in particular to multi-cutter matrix grinding equipment which comprises a rack and further comprises a conveying mechanism located on the rack and used for conveying glass on a photovoltaic laminated piece; the crushing mechanism is positioned at the output end of the conveying mechanism and is used for crushing glass on the photovoltaic laminated piece output by the conveying mechanism; the driving assembly is used for driving the crushing mechanism to operate; and the controller is arranged on the rack and used for controlling output operation of the driving assembly. The conveying mechanism is arranged on the conveying line for conveying the glass on the photovoltaic laminated piece, the crushing mechanism capable of crushing the glass on the photovoltaic laminated piece is arranged at the output end of the conveying mechanism, and when the crushing mechanism runs, the working mode of the structure ensures that the glass material cannot be crushed when the glass material is crushed; and uniform-size separation can be realized, so that subsequent recycling is facilitated.

The invention provides an airborne folding wing unmanned aerial vehicle launching adjusting device. The airborne folding wing unmanned aerial vehicle launching adjusting device comprises a launching cylinder, a booster, a thrust line adjusting tool, an unmanned aerial vehicle assembly, a plurality of snapping rods and a plurality of cutting-off assemblies. The launch canister has a launch port; the booster, the thrust line adjusting tool and the unmanned aerial vehicle assembly are sequentially arranged in the direction close to the launching opening, and the thrust line adjusting tool comprises a first thrust line adjusting piece and a second thrust line adjusting piece. According to the airborne folding wing unmanned aerial vehicle launching adjusting device, position adjustment of the unmanned aerial vehicle assembly and the booster can be achieved in the adjusting direction perpendicular to the launching direction through the thrust line adjusting tool, the problem that the thrust line cannot be adjusted is solved, the unmanned aerial vehicle assembly is smoothly launched from the launching cylinder, the overall structure is stable, and the overall structure is simple. The unmanned aerial vehicle assembly can be stably limited in the launching cylinder, the unmanned aerial vehicle assembly is prevented from falling off from the launching cylinder in the flying process of the flying mother aircraft, the booster and the aircraft body can be smoothly separated by cutting off the explosive bolt of the assembly, and the tail pushing piece is smoothly started.

The invention discloses a method for selectively separating valuable metals from a positive electrode material of a waste lithium battery, and belongs to the technical field of resource recycling of waste lithium ion batteries. The method comprises the following steps: preparing an aprotic deep eutectic solvent (DES) as a leaching agent and an electrolyte at the same time; the method comprises the following steps: adding a waste positive electrode material into DES, and leaching to obtain a DES leaching-electrolyte system; according to the method, the pulse voltage is applied in stages, selective separation of nickel, cobalt and manganese is achieved by controlling the pulse peak voltage (the first stage is-0.8 V to-1.0 V, the second stage is-1.0 V to-1.2 V, and the third stage is-1.2 V to-1.5 V), and the pulse frequency and the duty ratio are used for regulating and enhancing mass transfer and restraining side reactions. According to the method, the metal deposition potential difference is expanded through DES coordination regulation and control, efficient selective separation of nickel, cobalt and manganese is achieved in combination with pulse step-by-step voltage control, and the method has the advantages of being high in separation efficiency, few in side reaction, simplified in process, high in product purity and the like.

The present invention discloses a parallel pipe separation device, comprising a first plug-in separation plate and a second plug-in separation plate, a top surface edge of the first plug-in separation plate is provided with a first circular hole groove, a middle portion of the first circular hole groove is provided with a first core column, a first circular hole groove is provided with a connected first guide groove on the outer side, a first opening is provided on the top surface of the first plug-in separation plate, a bottom surface edge of the second plug-in separation plate is provided with a second circular hole groove, a middle portion of the second circular hole groove is provided with a second core column, a second circular hole groove is provided with a connected second guide groove on the outer side, a second opening is provided on the bottom surface of the second plug-in separation plate, the first plug-in separation plate and the second plug-in separation plate can be connected and fixed by positioning pins, a first positioning hole is provided on the first plug-in separation plate, and a second positioning hole is provided on the second plug-in separation plate, after connection and fixation, the first and second circular hole grooves can form a parallel pipe accommodating cavity, the first and second core columns can be inserted into the inner cavity of the parallel pipe, and the first and second guide grooves can form a tapered guide hole.

The utility model relates to a kind of preservative film winding drum fixing mechanism, it includes: fixed base, movable seat, elastic member and adjusting part. Movable seat is oppositely arranged with fixed base, and one end of movable seat is hinged with fixed base. Elastic member is connected with fixed base and movable seat respectively. Adjusting part is movably connected with fixed base, and adjusting part is movable relative to fixed base to push or not push movable seat, when adjusting part pushes movable seat, elastic member generates deformation, and movable seat rotates away from fixed base. When adjusting part does not push movable seat, the deformation of elastic member recovers and drives movable seat to rotate close to fixed base.

The application discloses a smelting arsenic-containing wastewater early warning monitoring method based on electrical sensing, and relates to the technical field of environmental monitoring. The application discloses a smelting arsenic-containing wastewater early warning monitoring method based on electrical sensing, and relates to the technical field of environmental monitoring. The application discloses a smelting arsenic-containing wastewater early warning monitoring method based on electrical sensing, and relates to the technical field of environmental monitoring. The application discloses a smelting arsenic-containing wastewater early warning monitoring method based on electrical sensing, and relates to the technical field of environmental monitoring. The application discloses a smelting arsenic-containing wastewater early warning monitoring method based on electrical sensing, and relates to the technical field of environmental monitoring. The application discloses a smelting arsenic-containing wastewater early warning monitoring method based on electrical sensing, and relates to the technical field of environmental monitoring. The application discloses a smelting arsenic-containing wastewater early warning monitoring method based on electrical sensing, and relates to the technical field of environmental monitoring. The application discloses a smelting arsenic-containing wastewater early warning monitoring method based on electrical sensing, and relates to the technical field of environmental monitoring. The application discloses a method for monitoring and early warning of smelting wastewater containing arsenic based on electrical sensing, which effectively improves the resolution and early warning real-time performance of electrical monitoring of arsenic-containing wastewater.

The utility model relates to the technical field of glass production, in particular to an automatic glass feeding device of a glass tempering furnace, which comprises a base, a fixed plate, a swing plate, a motor, an electric push rod, a contact plate and the like. A fixed plate is fixedly connected to one side of the top of the base, a swing plate is rotatably connected to the base, a motor is mounted on the base close to the swing plate, an output shaft of the motor is connected with the swing plate, an electric push rod is mounted on the swing plate, and a movable rod of the electric push rod is connected with a contact plate. Through cooperation of the motor, the electric push rod, the L-shaped clamping plate and other parts, automatic clamping and automatic feeding of glass are achieved, the whole process is high in automation degree, high in adaptability and easy and convenient to operate, and production efficiency is greatly improved.

The present invention relates to the field of parachute devices, and discloses a detachable parachute system, which includes a parachute body and a carrier, wherein a parachute cabin base is arranged at the bottom of the parachute body, and a connecting member is arranged between the carrier and the parachute cabin base, and the connecting member can realize the activation of a separating member on the connecting member through an impact sensing device arranged on the parachute cabin base, thereby realizing the separation between the parachute body and the carrier. The detachable parachute system of the present invention realizes the separation of the connecting member from the parachute cabin base or the carrier by arranging a connecting member between the parachute cabin base and the carrier, and controlling the operation of the connecting member through the impact received by the carrier, thereby ensuring that the connecting member can be activated immediately after the carrier lands on the ground or falls into water, ensuring that the carrier on the carrier can be quickly separated from the parachute body part, and ensuring the subsequent work efficiency of the carrier.

The utility model discloses a kind of material separators, belong to material separation field, to solve the phenomenon that lighter material is often attached to the surface of heavy material due to the interaction between materials under prior art, once this situation occurs, only rely on the air flow force of traditional vertical air flow separator, it is difficult to blow the light material on the surface of heavy material completely, leading to material separation is not sufficient, not only reduce the purity and quality of material, affect subsequent processing and use, also can increase the production cost and resource waste of enterprise, reduce the problem of production efficiency. Including separator shell, the lower end of separator shell is fixedly connected with discharge pipe, the inside and outside of separator shell is provided with separation mechanism, and the separation mechanism includes inclined plate fixedly connected on the left end upper side inside separator shell, the inside of separator shell is connected with shaft, the outside of shaft is fixedly connected with rotating plate at equal distance.

The utility model belongs to the cigarette production technical field, concretely relates to a kind of on-line automatic adjusting device of secondary winnowing air inlet ventilation quantity of cigarette machine, the device includes: porous baffle, is blocked in the air inlet place;Drive arrangement, the drive arrangement non-drive end is fixedly installed in the lower surface of the porous baffle;Wear plate, one end is fixedly connected in the drive end of the drive arrangement, the other end is attached to the hole face of the porous baffle;The drive arrangement drives the wear plate to make relative translation along the hole face of the porous baffle, adjusts area by covering / exposing hole to change the effective area of porous baffle aperture, to realize the on-line automatic adjustment of air inlet ventilation quantity.The utility model replaces artificial knob or valve preset by automation control completely, reduces the working intensity of operator, and reduces the equipment downtime or debugging frequency caused by improper human operation, and then reduces maintenance cost.

A visual feedback type vacuum adsorption partition temperature control method and system for semiconductor testing relates to the technical field of semiconductor testing. The existing semiconductor temperature control method has poor temperature control precision and stability for each partition. An infrared thermal image containing all semiconductor devices is collected, partitioned according to the number of semiconductor devices, the temperature gradient of each adjacent two partitions is identified, and the transverse heat conduction coefficient between each adjacent two partitions is obtained; thereby constructing an interference matrix; using the interference matrix, the temperature average value in each partition is fed forwardly compensated to obtain the purification temperature feedback vector of each partition; comparing the feedback vector with the preset target temperature of each partition, the driving current correction amount of each partition is generated, and the working current of the thermoelectric refrigerator of each partition is adjusted according to the correction amount, so as to realize the temperature regulation of each partition semiconductor device; the transverse heat conduction coefficient of the next sampling period is updated, and the temperature regulation is carried out in real time. It is used for regulating the temperature of semiconductor devices.

The present invention relates to the field of semiconductor technology, and provides a wafer transmission device, including a shell assembly and a wafer carrier. The shell assembly includes a box body and a cover body, the cover body is covered on the box body, the cover body and the box body surround a receiving cavity, and a valve assembly is provided on the box body; the wafer carrier is arranged in the receiving cavity, and the wafer carrier includes a first carrier and a second carrier that are arranged oppositely, the first carrier and the second carrier are connected to each other, and the first carrier and the second carrier are respectively provided with a plurality of bearing grooves for placing wafers, and a first flexible limiting member is provided on the two opposite groove walls of each bearing groove; when the receiving cavity is maintained in a vacuum environment by the valve assembly, the first flexible limiting member expands and extends to limit the corresponding wafer. The present invention can not only form a buffer for the wafer, but also provide a stable limit for the wafer to prevent the wafer from shaking in the bearing groove, so as to facilitate the wafer transmission device to transmit the wafer and avoid the risk of scratches or even breakage of the wafer.

The application provides a power cable damage detection device, which comprises a conveying mechanism, a twisting mechanism, a camera mechanism and a driving mechanism; the conveying mechanism comprises a rack, a chain plate and a chain wheel; the twisting mechanism comprises a clamping assembly and a control assembly; a plurality of clamping assemblies are installed on the chain plate, the control assembly controls three or more clamping assemblies to clamp the cable, and controls the clamping assembly in the middle to rotate after clamping, so as to clamp the two ends of the cable to be detected and reset after twisting the middle part; the camera mechanism collects images on the twisted cable; after the camera mechanism completes the collection, the control assembly controls the clamping assembly to separate from the cable; and the driving mechanism drives the cable to move linearly. The twisting action actively amplifies the damage position on the cable through physical deformation, converts the subtle defects that can be recognized only by high-precision equipment into obvious features that are easy to capture by the camera mechanism, reduces the precision requirement of the image recognition system, and greatly improves the sensitivity of the damage detection.

The invention relates to the technical field of assembling devices, and particularly discloses a vehicle cabin auxiliary assembling device which comprises a swing arm, a fixing assembly, an operation panel and a carrier vehicle. The fixing assembly is configured to clamp and fix the equipment cabinet, the fixing assembly is installed at one end of the swing arm, and the fixing assembly comprises a clamping arm capable of performing locking or unlocking action; the operation panel is installed at the other end of the swing arm and used for controlling locking or unlocking of the clamping arm. The carrier vehicle is used for transporting the equipment cabinet. The device has the advantages that the assembly efficiency and safety are improved, and the damage to the equipment cabinet in the assembly process is reduced.

The invention relates to the technical field of waste resource utilization, and discloses a coupling type system and method for preparing copper powder through kitchen waste gasification-hydro-thermal synthesis, and a coupling reaction device in the system comprises a supercritical water gasification module and a supercritical hydro-thermal synthesis module which are sequentially arranged in a sleeving mode from outside to inside; a palladium membrane is arranged between the supercritical water gasification module and the supercritical hydrothermal synthesis module; the outer side wall of the supercritical water gasification module is coated with a heating unit; according to the invention, a supercritical water gasification reactor and a supercritical hydrothermal synthesis reactor are integrated together through a sleeve structure; pure hydrogen is separated from gasification products in the supercritical water gasification module through a palladium membrane, an expensive chemical reducing agent is replaced, effective utilization of kitchen waste slurry is effectively improved, and the utilization rate of conversion from waste to resources is achieved. And meanwhile, pure hydrogen is separated by using a palladium membrane and enters a supercritical hydrothermal synthesis module, so that introduction of impurities is avoided, and preparation of high-purity superfine copper powder can be realized.

The utility model belongs to photovoltaic technical field discloses a kind of for silicon wafer separation's device for separating piece. Including material receiving and conveying mechanism, material distribution conveying mechanism, material support turnover mechanism, silicon wafer side clamp centering mechanism, piece separating side clamp centering mechanism being arranged in turn in order, piece separating mechanism is further provided on silicon wafer side clamp centering mechanism, the piece separating mechanism includes piece separating drive assembly, water spraying assembly B, piece separating drive assembly is set in the top of water spraying assembly B, piece separating drive assembly is set on fixed base plate B, and piece separating drive assembly includes cylinder, the cylinder stem front end of cylinder is connected with cylinder connecting plate by cylinder connecting piece, the bottom surface both ends of cylinder connecting plate each connect a guide shaft, guide shaft bottom is set out fixed base plate B, the bottom inside of two guide shafts is set up two vertical rods between two vertical rods and sets up piece separating line;Fixed base plate B bottom surface is provided with water spraying block A. It can stably separate silicon wafer, and separation efficiency is high, and separation is stable and accurate.

The present application relates to a kind of iron scale water washing impurity removal device and its use method, for the cleaning of iron phosphorus, including feed conveyor belt, water material mixing bin and water washing pool, the feed end of the water material mixing bin is equipped with receiving hopper, the receiving hopper is equipped with water washing mechanism, water material mixing bin's discharge end is equipped with the water material discharge pipe connected with the water washing pool below, the bottom surface of the water washing pool is inclined and is equipped with sewage outlet at lower end, water washing pool is equipped with water washing magnetic separation mechanism, the discharge end of water washing magnetic separation mechanism is equipped with discharge conveyor belt, the present application is separated by water spray to realize iron phosphorus and sundries, the mixed liquid of iron phosphorus and water is impacted at high speed by the ejection of high-pressure gas, improve the mixing effect of iron phosphorus and water, prevent iron phosphorus from depositing in water by the dispersion and flow of gas in liquid, make iron phosphorus and water mix evenly, finally realize the separation of iron phosphorus and liquid by water washing magnetic separation mechanism, so as to realize the cleaning of iron phosphorus in water, realize very efficient iron phosphorus cleaning effect.

The utility model discloses a sanitation truck garbage can supporting frame convenient to disassemble, and relates to the technical field of garbage can supporting frames, the sanitation truck garbage can supporting frame convenient to disassemble comprises a supporting frame body, a base support is fixedly installed at the lower end of the supporting frame body, a lifting rope is arranged on the supporting frame body, and a lifting garbage can is arranged at the lower end of the lifting rope. The lifting garbage can is installed on the supporting frame body in a sliding mode, a connecting rod is arranged on the supporting frame body, and during installation, only the side end of the base support needs to be inserted into the bottom of a garbage compartment, then the clamping block is clamped to the upper end of the garbage compartment, and installation can be rapidly completed; during disassembly, the adjusting screw rod is rotated to enable the clamping block to ascend to be separated from clamping, then the U-shaped frame is slid to enable the ground cushion block to make contact with the ground, and finally the base support is pulled out, the whole disassembly process is easy and convenient to operate, and by means of the convenient and fast assembly and disassembly mode, in environmental sanitation work, replacement of the faulted supporting frame or flexible adaptation according to different garbage trucks is achieved.

A protection sheet for a body attachment device according to the present invention relates to a protection sheet for a body attachment device, which is detachably coupled to an adhesive layer to cover and protect the adhesive layer of the body attachment device, which is attached to the skin of a user, the protection sheet comprising: a first section and a second section partitioned by a cutting line which is disposed inside an outer rim of the protection sheet; and an adhesive part provided on at least one of the first section and the second section so that a separation member by which the protection sheet can be pulled in a direction in which the protection sheet can be separated from the adhesive layer can be attached.

The application discloses a kind of based on construction waste recycling's recycled aggregate preparation method, it is related to building material technical field, including the following steps: construction waste is broken to obtain preliminary aggregate, then separation is carried out by magnetic separation device, remove metal by magnetic separation, avoid subsequent processing equipment to cause damage to aggregate;Preliminary aggregate is broken again, then aggregate is ground and collides;Recycled aggregate is screened according to different particle sizes using vibrating screen, by screening recycled aggregate according to different particle sizes, it is convenient to classify and utilize as needed for different particle sizes of recycled aggregate, reduce waste, improve the market applicability of recycled aggregate;The application also removes metal in aggregate efficiently by the cooperation of magnetic separation device, so that the quality of recycled aggregate prepared by the method is higher.

The utility model relates to a safety type remaining needle, in particular to a movable card connection type safety type remaining needle which is structurally characterized in that a rectangular groove hole is formed in one side face of a front cylinder body of a connector in a needle tube puncture assembly, and a buckling groove formed in a catheter seat is located in the front groove hole; the tail end of the short elastic arm of the elastic hook is provided with a right-angle agraffe which is hooked and pressed in the buckling groove, the pressing block is installed in the rear groove hole and presses the rear end of the short elastic arm, and the long elastic arm of the elastic hook is located in the connector rear barrel and restrained by the needle tube. On one hand, the rectangular groove hole is formed in the connector and is matched with the pressing block and the elastic hook to stably connect the catheter base and the connector, and on the other hand, the elastic hook can be in linkage along with needle withdrawing by means of different states of the elastic hook before and after needle tube puncturing, and the catheter base and the connector are easily separated. Therefore, stable connection of the connector and the catheter seat is guaranteed, a stable foundation is provided for puncture operation, needle withdrawing linkage separation is achieved, the structure is simple, and operation is convenient.

The invention discloses a subsynchronous harmonic compensation method and device of a power system. The method comprises the following steps: acquiring a real-time load current signal; based on a preset first window function, performing windowing processing on the real-time load current signal to obtain a first windowing current signal; carrying out peak detection on the first windowed current signal in a preset frequency range to obtain respective frequencies, amplitudes and phases of a plurality of subsynchronous harmonics; judging whether to maintain a first window function based on the frequencies and amplitudes of the plurality of subsynchronous harmonics; based on the respective frequencies, amplitudes and phases of the plurality of subsynchronous harmonics, sine wave signals corresponding to the plurality of subsynchronous harmonics are generated; and compensating the real-time load current signal through a unified power quality regulator based on the sine wave signals corresponding to the plurality of subsynchronous harmonics. According to the invention, the technical problems of low subsynchronous harmonic detection precision and weak separation capability of the existing unified power quality conditioner are solved.