793 results about "Metal detectors" patented technology

The invention provides a metal detection system and method with a partition detection function. The metal detection system comprises a conveying device which is provided with a conveying frame and a conveying belt arranged on the conveying frame; the metal detector comprises a shell located on the conveying frame and a detector arranged in the shell, the detector is provided with a transmitting assembly and a receiving assembly, in the width direction of the conveying belt, the transmitting assembly forms an annular transmitting area, and the receiving assembly forms an independent detection area and a composite detection area corresponding to the annular transmitting area; wherein in response to the movement of the conveyor belt, the detector is used for determining the positions of the metal foreign matters passing through the annular emission area, the independent detection area and the composite detection area in the materials on the conveyor belt. According to the invention, the position of the metal foreign matter in the material is rapidly and accurately positioned, the accuracy and reliability of detection are improved, and the subsequent targeted treatment on the material containing the metal foreign matter is facilitated.

The fiber detection material conveyor comprises a support, the upper surface of the support is fixedly connected with a conveying frame, the rear end of the left side of the conveying frame is fixedly connected with a gear motor, the driving end of the conveying frame is fixedly connected with a driving shaft of the gear motor, and the upper surface of the conveying frame is fixedly connected with a metal detection machine. A carding device is arranged on the inner wall of the conveying frame and comprises a leveling assembly, the leveling assembly comprises a mounting frame, the mounting frame is fixedly connected with the upper surface of the conveying frame, a connecting plate is mounted on the inner wall of the mounting frame, and a guide plate is fixedly connected to the end, away from the mounting frame, of the connecting plate. By means of the carding device installed in the conveying frame, when the conveying frame conveys fibers, the fibers passing through the detection area can be carded so as to ensure that the fibers pass through the detection area in a flat state, and the detection equipment can effectively detect metal containing impurities in the fibers.

The utility model discloses a seasoning processing metal detector which comprises a device body, the device body comprises a placing table, a sliding groove is formed in the placing table, supporting legs are connected to the lower portion of the placing table, a first lantern ring is installed in the sliding groove, a first lead screw and a second lead screw are arranged in the first lantern ring, an operation table is connected to the first lantern ring, and the operation table is connected to the second lead screw. The front end of the first lead screw is connected with a first motor, the first lead screw and the second lead screw are both sleeved with belts, a placement plate is installed on the operation table, a metal detector and a supporting frame are arranged above the supporting legs, and a third lead screw is installed in the supporting frame. According to the seasoning detection device, the situation that the detection effect of the device is affected due to seasoning accumulation in the detection process is avoided, the placement plate of the device can be quickly mounted and dismounted, a user can conveniently clean and maintain the device in the later period, sanitation and completeness of the seasoning are guaranteed, and the situation that subsequent use of the device is affected due to oxidative deterioration of the seasoning attached to the placement plate is avoided.

A metal detector includes a detection disc, a detection rod rotationally connected to the detection disc, a protective sleeve detachably connected within the detection rod, and electronic components housed within the protective sleeve. The electronic components include a main circuit board extending along the length of the protective sleeve and a secondary circuit board perpendicular to the main circuit board, positioned near the opening of the protective sleeve. On the side of the secondary circuit board facing the interior of the detection rod, there is a detection disc socket. The detection disc includes a coil, a waterproof cable connected to the coil, and a detection disc plug located at the end of the waterproof cable. The waterproof cable and detection disc plug extend into the detection rod, allowing the detection disc plug to be inserted into the detection disc socket.

A lid assembly for an in-ground meter box that can withstand substantial loads (e.g., 22, 500 lbs) without deformation. The lid assembly includes a metal frame secured to the bottom side of a plastic lid to allow the plastic lid to seat tightly for covering the in-ground meter box. The metal frame provides the rigidity and strength to withstand the loading while simultaneously providing the lid with sufficient weight to make it non-bouyant, i.e., should the surrounding ground environment become flooded, the lid is heavy enough to remain in place, covering the meter box and will not float away. The metal frame also is detectable by a metal detector should the lid every be covered over with debris and need to be located. The plastic lid body (e.g., linear low-density polyethylene (LLDPE)) of the lid assembly avoids radio signal interference or attenuation emanating from a transmitter positioned within the meter box.

The invention relates to an automatic package removing device, and belongs to the technical field of package detection equipment. The device comprises a horizontal conveyor belt, a metal detection unit, a weight detection unit, a correlation grating, a servo push plate mechanism and a control system, the metal detection unit detects metal impurities through a metal detector above a conveying belt, the weight detection unit obtains weight data through a weighing platform below the conveying belt, a built-in encoder of a correlation grating collects the speed of the conveying belt in real time, and the servo push plate mechanism drives a push plate through a servo motor and monitors thrust through a pressure sensor. And the control system receives the detection signal, calculates the starting delay time of the push plate based on the speed of the conveyor belt and the conveying distance, and drives the servo motor to act according to preset parameters, so that accurate removal of metal, weight and composite defective packaging materials is realized. The device is mainly used for automatically detecting and removing unqualified packages on a packaging production line, and the packaging quality control efficiency is improved.

A barrier component, a metal detector component; and a base structure that physically connects to the barrier component and connects to the metal detector component, wherein the base structure distances the barrier component from the metal detector component a distance that prevents electromagnetic interference between the barrier component and the metal detector component. A monitoring component monitors at least one gate system parameter of the gate system and stores the at least one gate system parameter or transmits the at least one gate system parameter to a monitoring service over a network.

The invention relates to a precipitation structure of a caisson in a foundation pit and a construction method.The precipitation structure comprises a box body, the side wall of the box body is fixedly connected with a plurality of side anchor hooks which are evenly distributed at equal intervals, and the side wall of the bottom of the box body is fixedly connected with a plurality of bottom anchor hooks which are evenly distributed at equal intervals; cross-shaped reinforcing ribs are fixedly connected to the inner walls of the periphery of the box body, a deformation early warning device is arranged in the middle of the box body, according to the structure, the welded box body sinks into a foundation pit, then concrete pouring is carried out, water in the foundation pit is rapidly discharged, the links of digging a precipitation well, burying a water pump, manually nursing precipitation and the like are omitted, the construction period is shortened, and the construction efficiency is improved. The construction efficiency is effectively improved, the deformation early warning device is additionally arranged in the box body for internal supporting, deformation of the box body under concrete pressure is effectively prevented, in addition, the deformation amount of the box body is monitored through induction of the metal detector to the metal sheet, early warning can be conducted on deformation of the box body, and the situation that the construction progress is affected due to excessive deformation of the box body can be effectively prevented.

The embodiment of the invention provides a method for measuring the length of a flying shear head on line and a control system, and belongs to the field of automatic detection. The method comprises the steps that a first metal detector is used for obtaining a first coded value when the head of a rolled piece passes; a second metal detector is used for obtaining a second coding value when the head of the rolled piece passes; acquiring a corresponding third coding value when the head of the rolled piece is sheared by the head cutting flying shear; a third metal detector is used for obtaining a fourth coding value when a new head of the rolled piece subjected to head cutting passes through; and according to the first coding value, the second coding value, the third coding value, the fourth coding value, the first coordinate distance between the first metal detector and the second metal detector, and the second coordinate distance, the third coordinate distance and the fourth coordinate distance between the second metal detector and the third metal detector, the actual head cutting length of the rolled piece is determined. According to the embodiment of the invention, the rolled piece cropping length can be accurately measured on line, and the accuracy of early prediction of the total length of the rolled piece can be improved.

The utility model discloses a roller way device for conveying long steel pipes, which comprises rows of steel pipes, the rows of steel pipes reach the tail end of a cooling bed, the rows of steel pipes are moved to a lower cooling bed wide roller way by a discharging arm and a rotating arm, the cooling bed wide roller way is supported by a roller way support and is divided into a plurality of sections, and the sections of the cooling bed wide roller way are connected with the discharging arm and the rotating arm. Each section is composed of a plurality of cooling bed wide roller ways arranged at intervals, the cooling bed wide roller ways are independently provided with control devices, each section is independently provided with control buttons for transmission control, the cooling bed wide roller ways are additionally provided with frequency conversion type air cooling systems, and the frequency conversion type air cooling systems cool the cooling bed wide roller ways and the control devices through compressed air. A cold metal detector is arranged between every two adjacent sections of the cooling bed wide roller way, a power supply of each section of the cooling bed wide roller way is controlled to be disconnected by an alternating current contactor, the model of the cold metal detector is a KHLRD2 metal detector, and the cold metal detector is electrically connected with a PLC (Programmable Logic Controller).

The electromagnetic iron remover comprises a supporting frame, an electromagnetic block is arranged at the top of the supporting frame, an impurity removal channel for materials to pass through is formed in the electromagnetic block, a quantitative feeding mechanism communicating with the impurity removal channel is arranged at the top of the electromagnetic block, and a detection bin communicating with the impurity removal channel is arranged at the bottom of the electromagnetic block; a baffle valve is arranged at the bottom of the detection bin, a metal detector is arranged in the detection bin and electrically connected with a controller, a discharging bin is connected to the bottom of the detection bin, a first material pipe, a second material pipe and a slag discharging pipe which are distributed in an annular array are connected to the bottom of the discharging bin at the same time, and the first material pipe is used for discharging materials with impurities reaching the standard; the first material pipe is used for discharging materials with impurities not reaching the standard, the second material pipe is used for discharging materials with impurities not reaching the standard, the slag discharging pipe is used for discharging metal impurities, a pipe opening switching mechanism is further arranged at the bottom of the discharging bin, and the pipe opening switching mechanism is used for only opening any pipe opening of the first material pipe, the second material pipe and the slag discharging pipe.

The invention discloses a millimeter wave security check method and device, equipment and a storage medium, and the method comprises the steps: determining a first person existence state based on an output signal of a correlation infrared sensor, and triggering a metal detector and generating a metal detection result when a person exists; controlling a millimeter wave emission module to operate based on the trigger signal and calculating a millimeter wave detection result; and determining a first security check result based on the metal detection result and the millimeter wave detection result, when the first security check result does not pass and the existence of people in the security check area is determined based on the correlation infrared sensor, regenerating a new millimeter wave detection result, and determining a second security check result based on the metal detection result and the new millimeter wave detection result. According to the invention, when the first security check result is not passed and the security check object is judged not to leave the security check area based on the correlation infrared sensor, the second security check result is determined by using the first metal detection result and the new millimeter wave detection result, the security check object does not need to leave the security check area, and the secondary security check process is simplified.

The utility model relates to a needle inspection device for producing and processing pillow interiors and quilt interiors, which comprises a conveying belt, a needle inspection mechanism for performing needle inspection and positioning on the pillow interiors and the quilt interiors is arranged on the right side of the upper surface of the conveying belt, a classification mechanism for cleaning the pillow interiors and the quilt interiors containing foreign matters is arranged on the left side of the back surface of the conveying belt, and the needle inspection mechanism comprises a fixing frame. According to the needle inspection device for pillow inner and quilt inner production and processing, the needle inspection mechanism is arranged, a shielding cover, a metal detector, a scanning cover, an X-ray scanner and the like are matched with one another, various detection technologies including the metal detector and the X-ray scanner are applied, foreign matter or metal objects possibly existing in pillow inner and quilt inner can be comprehensively and accurately detected, and the detection accuracy is improved. And the X-ray has perspectivity and can scan the existing position of the foreign matter, and the foreign matter is displayed through the display screen, so that a worker can quickly find and clean the foreign matter, comprehensive and accurate detection of the pillow inner and the quilt inner can be realized, the product quality is ensured, and the safety of consumers is guaranteed.

The utility model discloses a needle inspection device for down feather home textile production, which belongs to the technical field of home textile production, and comprises an inspection machine, a feed port is arranged on the outer wall of one side of the inspection machine, a metal detector is arranged in the inspection machine, an alarm lamp and a steam pressing assembly are fixedly mounted on the top surface of the inspection machine, and the steam pressing assembly is fixedly mounted on the top surface of the inspection machine. A feeding hole is formed in the detection machine; according to the home textile detection device, the winding assembly and the steam pressing assembly are arranged in a matched mode, when the device is used, home textiles are guided in through the feeding port, the other ends of the home textiles are attached to the attaching pad of the winding roller, at the moment, the winding motor is started to work, and through the design, continuous detection of the home textiles can be completed; and meanwhile, the detected home textile materials can be synchronously rolled, the device is convenient and rapid to apply, some hidden needles which are not detected can be rapidly found during rolling, the detection effect of the device is further improved, and meanwhile the safety of products is guaranteed.

Disclosed is a two-function and modular structure three-dimensional underground scanning device. The device has a two-function and modular device structure having of a magnetic field detector with a magnetic sensor based on the magnetic research method and a metal detector based on the pulse induction system.

The invention discloses a cooling system and a cooling method for preventing a steel belt from being supercooled, belongs to the technical field of metal processing, and aims to solve the problem of supercooling during aerial fog cooling. The cooling system for preventing the steel belt from being supercooled comprises a roller way (1), a high-temperature metal detector (2), an aerial fog cooling device (3), a water film thickness detector (4), an air injection device (5) and a control unit, the high-temperature metal detector (2), the aerial fog cooling device (3), the water film thickness detector (4) and the air injection device (5) are sequentially arranged in the conveying direction of the roller way (1). According to the cooling system and the cooling method for preventing the steel strip from being supercooled, the cooling capacity of aerial fog cooling can be flexibly adjusted, water sprayed by the aerial fog nozzles is prevented from being gathered on the surface of a steel plate to form a water film, the supercooling phenomenon on the surface of the steel strip is prevented, and diversified cooling requirements are met.

The utility model discloses an automatic separating device for metal foreign matters in tobacco shreds, which comprises a base, the top of the base is fixedly connected with a shell, the top of the inner wall of the shell is fixedly connected with a mounting rack, the bottom of the mounting rack is fixedly connected with a metal detector, the top of the shell is fixedly connected with a hydraulic cylinder, and the hydraulic cylinder is fixedly connected with a hydraulic cylinder. And the bottom of the hydraulic cylinder is fixedly connected with an electromagnet. The utility model relates to the technical field of tobacco production, in particular to an automatic separating device for metal foreign matters in tobacco shreds, which realizes the control of the thickness of the tobacco shreds on a conveying component through the matching among a first motor, a double-thread screw, a threaded block, a sliding rod, an inclined column, a transverse column and a vertical plate. The problem that when an existing automatic separation device automatically separates metal foreign matter in tobacco shreds, due to the fact that the tobacco shreds on conveying equipment are thick, some metal hidden in the middles of the tobacco shreds cannot be easily found by a metal detector, the situation of missing occurs, and the separation effect of the existing automatic separation device is reduced is solved.

Disclosed herein is a hand-held underwater dredge integrated with a metal detector, designed for locating and retrieving metallic objects from aquatic environments. Equipped with a suction-generating electric pump and powered by an onboard battery to enable operation while fully submerged, the dredge features a pipe system leading to a catch can that captures metal items while expelling the water drawn into the pipe system by the generated suction. In operation, users scan a riverbed, seabed, or lakebed using the metal detector. Once a metal item is detected, the user places the suction end of the pipe system over the metal item and activates the electric pump to start the suction, leading to capture of the metal item in the catch can for retrieval. This streamlines the process of underwater treasure hunting, combining detection and collection into a single user-operated system.

A velvet cloth toy filler detection device comprises a conveying frame, a shell is fixedly connected to one side of the upper side wall of the conveying frame, a fixed frame is fixedly connected to the outer wall of the upper side of the shell, a lifting plate is arranged in the fixed frame, a supporting plate is fixedly connected to the upper side wall of the lifting plate, and a metal detector is installed on the lower side wall of the supporting plate. An adjusting assembly is arranged in the shell, and a sweeping assembly is arranged on the lower side wall of the conveying frame. Compared with the prior art, the lifting device has the advantages that the lifting plate can be lifted in the fixed frame body through the threaded rod, the worm gear, the worm and the hand wheel, so that the supporting plate can drive the metal detector to move up and down, and the distance between the metal detector and the velvet toys is changed to adapt to the velvet toys with different sizes; and through the arrangement of a support, a sliding groove, a sliding block, a spring, a bearing plate, a containing groove and a brush plate, the brush plate can be conveniently detached to clean batting, and the device is more practical.

The utility model discloses a measurement standard device for calibrating sensitivity indexes of a metal detector, which comprises a test block support fixing seat without metal components, a test block support and a metal test block, and the test block support is arranged on the test block support fixing seat; the metal test block is arranged on the test block bracket; the measurement standard device is provided with a plurality of metal test blocks, each metal test block comprises a body, and the bodies do not contain metal components; the body is internally provided with a metal ball accommodating cavity, the metal ball accommodating cavity is used for placing or not placing metal balls, and the diameters of the metal balls placed in the metal test blocks are different. The device disclosed by the utility model can be used for simulating the metering performance of various metals, so that the metal detector can be used for calibrating various metal detection sensitivity indexes.

The utility model relates to the field of wet tissue processing, in particular to a metal foreign matter detection device which comprises a workbench, table legs, a conveying mechanism and a detection classification mechanism. The conveying mechanism is arranged on the outer side of the workbench and used for fixing wet tissues and conveying the wet tissues to a detection point; the detecting and classifying mechanism is arranged on the top of the workbench and used for detecting the content of metal foreign matter of the wet tissue at a fixed point and separating qualified products from defective products. Through the arrangement of the conveying mechanism, wet tissues are conveyed and detected at fixed points, continuous and rapid metal impurity detection can be realized, manual intervention is reduced, the production efficiency is improved, meanwhile, the consistency of a detection environment can be ensured, and the influence of factors such as position change or vibration on a detection result is reduced, so that the detection accuracy is improved, and the detection efficiency is improved. And the wet tissues can pass through the metal detector one by one, so that missing detection is effectively avoided, and each wet tissue is ensured to be fully detected.

The embodiment of the invention provides a method and device for determining the length of a blank on a bar production line, a storage medium and a processor, and belongs to the technical field of intelligent manufacturing. The method comprises the steps that the first distance between a metal detector and the center line of a rolling mill is obtained, the metal detector is used for monitoring each steel billet rolled piece passing through the monitoring position, and the rolling mill is used for rolling the steel billet rolled pieces; according to the pulse count value of the rolling mill encoder and the first distance, the measurement pulse equivalent of the currently-machined steel billet rolled piece is determined; calculating a current measurement pulse equivalent average value by adopting a rolling average method; and according to the measured pulse equivalent average value, the pulse count value and the first distance, the blank length of the currently-machined steel blank rolled piece is determined. By means of the method, the total length of a bar finished product obtained after the steel billet rolled piece is rolled can be accurately obtained.

The method is useful for operating a metal detector including a balanced coil system (2) with a transmit coil (21) connected to a transmit unit (1) and first and second receive coils (22A, 22B) connected to an input of a receive unit (3). The transmit unit (1) includes a transmit signal path (tp) to which a transmit signal (tx) having at least one fixed or selectable operating frequency and an associated quadrature signal (tx90°) are provided, the transmit signal (tx) being applied to an input of a transmit amplifier (12) which transfers the amplified transmit signal (tx) directly or via a transmit matching unit (13) to the transmit coil (21), and the receive unit (3) includes at least one receive signal path (rp) to which a modulated receive signal (rs) received from the balanced coil system (2) is applied directly or via a receive matching unit (31) to a receive amplifier (33), which transfers the amplified modulated receive signal (rs) directly or indirectly to a receive amplifier (33). The modulated received signal (rs) is applied to a receive phase-sensitive detector (34; 4534), which compares the modulated received signal (rs) with reference signals corresponding to the transmitted signal (tx) and the quadrature signal (tx90°) to generate a demodulated complex received signal (rsc) having an in-phase received signal component (rs-I) and a quadrature received signal component (rs-Q), which are processed in a signal processing unit (45) including at least one signal processing path (sp), in which signal components of the complex received signal (rsc) related to the product or noise are suppressed and signal components originating from metal contamination are further processed.According to the invention, at least one transmit measurement channel (8) is provided, which includes a measurement amplifier (83) that receives a measurement signal (ms) taken from the transmit signal path (tp), amplifies the measurement signal (ms) and forwards it directly or indirectly to a measurement phase-sensitive detector (84; 4584), which compares the measurement signal (ms) with reference signals corresponding to the transmit signal (tx) and the quadrature signal (tx90°) and generates a complex measurement signal (msc) having an in-phase measurement signal component (ms-I) and a quadrature measurement component (ms-Q), and the complex measurement signal (msc) and the complex receive signal (rsc) are applied to a first correction module (451), and signal components due to instabilities of the transmit unit (1) are removed from the complex receive signal (rsc).

A method of detecting at least one target using a handheld metal detector, comprising: emitting, by an emitter, an emission magnetic field; receiving, by the receiver, the receive magnetic field to generate one or more receive signals; processing the one or more received signals to generate a plurality of different processed signals; constructing a representation of a vector subspace based on the plurality of different processed signals; respectively processing the representation of the vector subspace and a plurality of target models so as to determine the close degree between each target model and the vector subspace; and based on the close degree of each target model in the plurality of target models and the vector subspace, generating indication output indicating the existence of at least one target.

The invention relates to the technical field of food detection, in particular to a food metal detector which comprises a food conveyor and a metal detection mechanism arranged on the food conveyor, a tray conveyor is arranged beside the food conveyor, a supporting frame is fixedly connected between the tray conveyor and the top end of the food conveyor, and a sliding groove is formed in the top end of the supporting frame. By means of the arrangement of the structure, two rows of bread in the middle of four rows of bread on the tray can be pushed to the middle, then the bread on the outer side is pushed to the two sides, the moving space of the upper shovel plate and the lower shovel plate is reserved, and the upper shovel plate and the lower shovel plate can be lowered to the tray; and then the upper shovel plate and the lower shovel plate are driven to move towards the two sides to shovel up all the four rows of bread, then the bread is placed on the food conveyor through the moving mechanism to be subjected to metal detection, and therefore automatic taking of the bread in the tray is achieved, workers do not need to shovel the bread beside, and the convenience performance of the equipment is improved.

The present application relates to hot strip production process technical field, specifically to a kind of coreless hot coil box open tail folding processing method, comprising: receiving intermediate blank thickness, for the equipment preset of hot coil box;After hot coil box completes coiling and uncoiling, when the hot metal detector HMD at the outlet of hot coil box becomes OFF state, according to the distance of slab tail reaching flying shear is calculated based on speed parameter;The thickness of slab tail is detected using pinch roll at the outlet of hot coil box;When the thickness of slab tail is detected and the thickness mutation value reaches the threshold range of preset, it is determined that tail uncoiling fails, and an abnormal instruction is sent to flying shear cutting system;After flying shear cutting system receives the abnormal instruction, on the basis of preset cutting gauge length, increase compensation length, generate updated tail cutting length;Flying shear cutting system starts cutting according to updated tail cutting length, so that actual cutting position avoids folding part of slab tail.The present application avoids flying shear blade collapse even mill broken roll accident.

Systems and techniques for customizing and installing a configuration of a user-reconfigurable metal detector. In embodiments, a user-reconfigurable metal detector system is configured to enable customization of a configuration for the user-reconfigurable metal detector and to enable installation of the customized configuration on the user-reconfigurable metal detector. In embodiments, users interact with an update system to customize the configuration of the user-reconfigurable metal detector, and to deploy or install the customized configuration onto the user-reconfigurable metal detector. In embodiments, a current configuration of the user-reconfigurable metal detector may be replaced with the new customized configuration.

The utility model discloses a multi-frequency metal detector which comprises a single-chip microcomputer master controller, a key module, a receiving module, a transmitting module, an FM module, a single-chip microcomputer programming module, an adjustable power supply module, a frequency mixing control module, a power supply module, a sound amplification module and a storage module. Wherein the transmitting module is provided with an H-bridge structure, and the H-bridge structure is connected in series with an LC to generate sine wave current potential eddy current to perform same-frequency resonance on various metals; the key module, the receiving module, the transmitting module, the FM module, the single-chip microcomputer programming module, the adjustable power supply module and the frequency mixing control module are electrically connected with the single-chip microcomputer master controller. The power supply module, the sound amplification module and the storage module are electrically connected with the frequency mixing control module. The multi-frequency metal detector provided by the utility model is stable in operation, high in efficiency, capable of generating 144 frequencies, strong in signal and high in metal detection efficiency.

A hand-held metal detector coil, including a coil housing which houses aggregate transmit windings and aggregate receive windings. The aggregate transmit windings include a major group of transmit windings that includes a first transmit winding, and the aggregate receive windings include a major group of receive windings that includes a first receive winding; the coil further includes a minor group of windings to null the aggregate receive windings with respect to the aggregate transmit windings. In an absence of external influences, a mutual inductance coupling coefficient between the aggregate receive windings and the aggregate transmit windings, kTR, is <0.03. A mean location of turns of the major group of transmit windings is further from a bottom plane of the coil housing than a mean location of turns of the major group of receive windings; the first transmit winding has at least part of their cross-sectional winding profile with a first cross-sectional axis longer than a second cross-sectional axis by at least a factor of 3; a mutual coupling constant coefficient between the major group of transmit windings and the major group of receive windings, k11, is <0.5; and a mean location of turns of the of the first transmit winding is at least 25 mm or more from a bottom plane of the coil housing.

The present invention discloses a recycling granulation device dedicated to lightweight recycled plastics, comprising a belt conveyor, a forced feeder and a single screw extruder, wherein one side of the belt conveyor is provided with a forced feeder, one side of the forced feeder is provided with a single screw extruder, the surface of the belt conveyor is connected with a conveyor belt through a driving motor, a metal detector is provided on the top of the belt conveyor, a baffle is provided on the other side of the top of the belt conveyor, and a placement tank is installed on one side of the belt conveyor. The present invention improves the output by providing forced feeding and a melt filter, improves the product quality by providing vacuuming and a melt filter, and reduces the frequency of changing the screen by a large filter area and a long working time, and the filter screen replacement speed is fast, thereby reducing the labor intensity of workers.