178 results about "Demagnetizing device" patented technology

The invention discloses a gangue raw material processing device for insulating brick production. The device comprises a crushing shell, wherein a feed hopper is arranged in the middle of the upper end part of the crushing shell; a demagnetizing device is arranged in the feed hopper, and consists of two crossed magnetic rods; two first-grade crushing rollers and two second-grade crushing rollers are arranged in the crushing shell from top to bottom; the first-grade crushing rollers coat first-grade roller shafts; the second-grade crushing rollers coat second-grade roller shafts; and multiple crushing projections are uniformly arranged on the first-grade crushing rollers and the second-grade crushing rollers. The device has the following beneficial effects: firstly, raw materials are magnetically separated to screen out iron-contained impurities so as to prevent a crushing device from being damaged; and the first-grade crushing rollers and the second-grade crushing rollers are arranged for selectively crushing incoming materials according to the volume size, so that the crushing efficiency is improved, and the crushing pressure is relieved.

The invention discloses an unmanned convenience store operation system based on a self-service cash register, which comprises a showroom with weighbridges at the entrance and the exit. The showroom isinternally provided with the self-service cash register; the self-service cash register comprises a tunnel-type channel, a track, a track power device, a barcode scanning device and a demagnetizing device; the barcode scanning device and the demagnetizing device are both arranged in the tunnel-type channel; and the surface of the track is a goods placement area. A customer places the goods in thegoods placement area, the track moves and drives the goods to enter the tunnel-type channel, the goods sequentially passes through the barcode scanning device, the barcode information is read, the information is given to a PC processing module, the unit price and the unit weight corresponding to the barcode are called from a pre-stored barcode goods information database, the total price and the total weight SigmaW1...n are calculated, and n is no smaller than 1. The anti-theft magnetic strip of the goods is subjected to demagnetizing processing through the demagnetizing device away from the entrance. The weighbridges at the entrance and the exit acquire the weight difference of the customer before and after entering, the weight difference is compared with the total weight SigmaW1...n, opening and closing of a screen door at the exit are controlled according to the comparison result, and the goods can be prevented from being stolen or damaged.

The invention discloses an eddy current detecting device of seamless steel tubes, belonging to the technical field of tube detection. The eddy current testing device comprises a feeding platform, a conveying roller way, a first locating pinch roller, a flaw detection roller way, an eddy current testing device, a second locating pinch roller, a demagnetizing device, a marking seat and a discharging platform, which are sequentially installed on a rack, and an electric control device for controlling feeding and discharging as well as transferring, sorting and defect alarming of steel tubes. The eddy current detecting device is characterized by comprising a high frequency flaw detection device and a low frequency flaw detection device, wherein the high frequency flaw detection device comprises a high frequency magnetic saturation device A, a flaw detection probe A and a lifting device A, and the low frequency flaw detection device comprises a low frequency magnetic saturation device B, a flaw detection probe B and a lifting device B. The eddy current detecting device disclosed by the invention can be used for simultaneously detecting defects on inner and outer surfaces of tubes so as to improve the detection rate of defective steel tubes and further ensure good quality of the seamless steel tubes.

The invention relates to a workpiece demagnetizing method and a workpiece demagnetizing device. The method selects a square wave signal with unchanged frequency and amplitude; an amplifying circuit and a push-pull circuit are connected into a drive circuit; and the drive circuit is connected with a coil. Corresponding to the method, the demagnetizing device mainly comprises a power supply, a signal generator, a driver and a coil. An unfading alternating magnetic field generated by the method and the device can not only demagnetize a static workpiece but also can carry out continuous demagnetization on a dynamic workpiece and have wide application range; a ferrite is adopted as a magnetic core; demagnetizing current with high frequency and unchanged amplitude is conducted to the coil; the alternating magnetic field generated by the coil can disturb the residual magnetic domain of the workpiece; the demagnetizing effect is good; and the method is simple and feasible and the device has a compact structure so as to solve the difficult problem of demagnetization in the field and have practical value.

An apparatus and method is disclosed for measuring a parameter of an earth formation surrounding a wellbore. A Nuclear Magnetic Resonance (NMR) tool and at least one second tool are conveyed in the wellbore on a wireline, the NMR tool having a magnetic influence on a region of the wellbore. The magnetic influence of the NMR tool is removed from the region of the wellbore using a demagnetizing device. The parameter of the earth formation is measured using the at least one second tool. A second demagnetizing device may be used to remove the magnetic influence of the at least one second tool from the region of the wellbore.

The invention discloses a high gradient magnetic separator, which comprises a separation ring and a driving device thereof, an ore feeding device, a concentrated ore discharging device and a concentrated ore collecting device, wherein the separation ring comprises a rotating ring and a concentrated magnetic medium pack, an upper magnetic yoke, an upper magnet, a lower magnetic yoke, a lower magnet, a left magnetic yoke, a right magnetic yoke, and a magnetizing and demagnetizing device which consists of magnetic coils and a magnetizing power source and can perform magnetizing and demagnetizing treatment on the upper magnet and the lower magnet respectively. The high gradient magnetic separator smartly combines a permanent magnet and a magnetizing power source to form a background magnetic field of the separator, so the high gradient magnetic separator can conveniently perform magnetizing and demagnetizing treatment on the upper magnet and the lower magnet according to the required value of the background magnetic field and then perform effective separation on ores after canceling the magnetizing power source when in work, and can perform demagnetizing treatment on an upper magnet and a lower magnet when in assembly and maintenance so as to solve the magnetic blockage problem. The high gradient magnetic separator can greatly reduce the energy consumption, and fully ensure convenient maintenance in practical production.

The invention discloses a lithium battery negative electrode smashing and demagnetizing device convenient to clean. The device comprises a feeding and smashing mechanism, a crushing assembly, a rotating material pushing mechanism, a negative electrode smashing box body and a demagnetizing assembly arranged in the negative electrode smashing box body; the feeding and smashing mechanism is installedon the top of the negative electrode smashing box body, a material guiding hopper is welded to the inner wall of the negative electrode smashing box body and divides the interior of the negative electrode smashing box body into a smashing cavity and a demagnetizing cavity, and the demagnetizing assembly is installed in the portion, in the demagnetizing cavity, of the negative electrode smashing box body; and the feeding and smashing mechanism smashes lithium battery negative electrodes, the crushing assembly crushes the lithium battery negative electrodes, lithium battery negative electrode materials dropping into the demagnetizing cavity are stirred in the rotating material pushing mechanism, fully demagnetized by magnetic rings and magnetic blocks and discharged by a discharge pipe. Smashing, crushing, stirring, demagnetizing and discharging operations of the lithium battery negative electrodes are achieved, the operations are convenient and fast, and the smashing and demagnetizingeffects are good.

The invention provides an online residual magnetism detecting device of a round steel and a detecting method thereof. The residual magnetism detecting device comprises a photoelectric detecting device, a control device, a moving device, and a sensing probe. The photoelectric detecting device is arranged above a propeller path behind a demagnetizing device and is used for detecting the position ofa round steel on a propeller path at an assembling line. The control device arranged between the photoelectric detecting device and the demagnetizing device is arranged on a device platform at one side of the propeller path. The moving device arranged behind the photoelectric detecting device is used for moving the sensing probe. The sensing probe arranged at the upper end of the moving device isused for feeding back obtained data to the control device and the control device displays a processed result at a display device. According to the online residual magnetism detecting device and the employed online automatic round steel residual magnetism detecting mode, the manpower is saved, the detection efficiency and the accuracy of the detection result are improved, and occurrence of missingdetection during the round steel residual magnetism detecting process is avoided.

The invention discloses a conveyer belt multi-pole magnetic roller asynchronous demagnetizing device, which comprises a multi-pole magnetic roller (1), a magnetic roller drive motor (5), a magnetic roller framework (18), a structural frame (10), a lifting device and a controller (12), wherein the multi-pole magnetic roller is hang on the magnetic roller framework through a magnetic roller shaft, the magnetic roller drive motor drives a magnetic roller shaft transmission belt wheel (2) to rotate through a power belt wheel (4) and a transmission belt (3) so as to drive the multi-pole magnetic roller to rotate, and the multi-pole magnetic roller is positioned above a conveyer belt (6); the structural frame is positioned above a conveyer belt return plane, and a vertical bar of the structural frame is fixed on the ground; and one end of the magnetic roller framework is connected on the vertical bar of the structural frame through a rotating shaft (11), the other end of the magnetic roller framework is provided with the hoisting device, an upper stop point (17) and a lower stop point (1) with travel switches are formed on the vertical bar at the other end of the structural frame, the output of the travel switches is connected with a controller (12), and the controller controls the magnetic roller drive motor and the hoisting device. The demagnetizing device has the advantages of simple structure, low energy consumption and good demagnetizing effect.

The invention provides a consumable container, an information processing system and an information processing method. The consumable container comprises a shell and a cavity surrounded by the shell, wherein the outer wall of the shell is provided with a record strip comprising a plurality of magnetic bodies. The information processing system comprises a demagnetization device, a demagnetization controller for controlling the work of the demagnetization device, a plurality of magnetic bodies of which magnetism can be removed by the demagnetization device, and a magnetic field sensing apparatus. The information processing method comprises that: the magnetic field sensing apparatus detects the amount of the magnetic bodies with the magnetism on the record strip and transmits the detection result to a body controller; the body controller judges whether the consumable excess is enough in the consumable container, and if the consumable excess is enough, printing work begins, otherwise, warning information is sent out; and after the printing work begins, the body controller judges whether the magnetism of one magnetic body needs to be removed, and if the magnetism needs to be removed, the demagnetization device removes the magnetism of the magnetic body, otherwise, the judgment is continuous. The invention can effectively avoid occurrence of abnormal work situation because the related information of the consumable container cannot be read.

The invention discloses a demagnetizing method of a high-strength steel narrow-gap welding groove. The groove residual magnetism is reduced by carrying out the technology of tack welding and run-on plate adding before welding, multiple demagnetizing operations can be carried out on a single U-shaped or double U-shaped groove by a pulse demagnetizing device according to different technologies, a moving direction of a demagnetizing device coil box can be changed after each demagnetizing operation, and the demagnetizing operations can be finished until the groove residual magnetism is reduced to a certain value. By adopting the pulse demagnetizing method and combining the demagnetizing technology of pack welding and run-on plate adding before welding, the demagnetizing effect of a large-size workpiece can be effectively increased, the portability of the demagnetizing device is good, the motion matching of the workpiece is not needed during application, the demagnetizing method is particularly suitable for carrying out the demagnetizing operation in a production field, and the engineering adaptability is strong.

The invention relates to the field of demagnetizing, and particularly provides a movable demagnetizing device, which comprises a demagnetizing power station system, a demagnetizing power source system, a special demagnetizing cable system, a magnetic field measurement system, a demagnetizing control system and a demagnetizing auxiliary system, and the demagnetizing power station system, the demagnetizing power source system, the special demagnetizing cable system, the magnetic field measurement system, the demagnetizing control system and the demagnetizing auxiliary system are integrated in three standard containers. The movable demagnetizing device can be moved when the movable demagnetizing device is carried by a container transport vehicle or a ship, and can be used for performing magnetic field measurement and remained magnetism treatment for large ferromagnetic equipment, such as ships. The movable demagnetizing device has the advantages that the manufacturing cost is relatively low, the batch production is easy, the demagnetizing speed is higher, the carrying method is flexible, the mobility and hidden property are good, the movable demagnetizing device can be applied to military and civil purposes, and the higher economic value is realized.

The invention discloses a device and a method for synchronously demagnetizing steel wire lining conveyor belt, wherein the demagnetizing device comprises a planar demagnetizer, a planar demagnetizer controlling box and a support frame; a magnetizer is arranged in a magnet exciting coil which is positioned on a magnet exciting board and connected with the planar demagnetizer controlling box; a magnet exciting board shell is arranged on the magnet exciting board to form a cavity body; two ends of the support frame are respectively and fixedly connected with a bracket and the magnet exciting board shell, and the planar demagnetizer is fixed above a descending plane of the conveyor belt. The method comprises the following steps: an iron remover is started after metals in mineral materials are detected by a metal detector, and a signal is input into the first input end of an and gate circuit; a conveyor belt walking signal is transmitted into the second input end of the and gate circuit; the planar demagnetizer controlling box is started by an and gate circuit transmission signal; and the planar demagnetizer is controlled to demagnetize the conveyor belt after the planar demagnetizer controlling box receives a signal emitted from an initial start time-delay interrupter. The invention can entirely demagnetize the steel wire lining conveyor belt and ensures the normal operation of the metal detector.

The invention belongs to the technical field of ultrasonic non-destructive detection, and relates to an ultrasonic scanner, which comprises a main beam, arc-shaped arms, magnet-wheel mechanisms, encoders and a probe loading arm. The main beam comprises a long arm, a short arm, and a connecting piece used for connecting the long arm and the short arm and capable of adjusting an included angle between the long arm and the short arm; the arc-shaped arms are connected to two end parts of the main beam; the magnet-wheel mechanisms are respectively connected to two ends of the arc-shaped arms through connecting arms; the encoders used for recording distances are arranged on the arc-shaped arms; each magnet-wheel mechanism comprises a magnetic wheel and a demagnetizing device; each connecting arm can adjust the distance and the angle between the magnetic wheels located at two ends of each arc-shaped arm; each demagnetizing device is fixed onto the corresponding connecting arm; the probe loading arm comprises a second slide block, a loading arm and a probe fixing rack; the probe loading arm can slide in a length direction of the main beam; the probe loading arm can be disassembled and replaced. The ultrasonic scanner provided by the invention can be used for simultaneously scanning three weld joints, i.e. a straight welded joint, a circumferential weld joint and a fillet weld joint, and is good in flexibility, and high in accuracy and reliability.

The invention discloses grinding equipment and a magnetic grinding disc kit for tapered roller rolling surface finishing of ferromagnetic materials. The grinding equipment comprises a main body, the magnetic grinding disc kit and a roller circulation disc outer system. The main body includes a base, a column, a beam, a slide table, an upper tray, a lower tray, an axial loading device and a spindledevice. The roller circulation disc outer system includes a roller collecting device, a roller demagnetizing device, a roller conveying system, a roller finishing mechanism and a roller feeding mechanism. The magnetic grinding disc kit includes a pair of coaxial first and second grinding discs of which the front surfaces are disposed opposite to each other. The front surface of the first grindingdisc includes a set of linear grooves radially distributed on a base surface (positive conical surface) of the first grinding disc, the front surface of the second grinding disc includes one or morespiral grooves distributed in the base surface (positive conical surface) of the second grinding disc, and a ring-shaped magnetic structure is embedded inside a base body. The grinding equipment has the finishing ability of multitudinous ferromagnetic material tapered roller rolling surfaces.

The invention discloses a damping oscillation-type demagnetizing device, relating to the field of demagnetizing technique, and comprising mutual inductor and also pulse power supply as well as capacitor; wherein, the mutual inductor is a hollow mutual inductor, coiled of a primary coil and a secondary coil; and two ends of the secondary coil are connected with those of the capacitor, respectively, and two ends of the primary coil are two output ends of the pulse power supply, respectively. The invention can obtain a demagnetizing filed with enough wave number and reduction rate to completely demagnetize permanent magnet; the oscillation of the invention happens in the secondary loop, unable to be affected by high-capacity energy storage capacitor, thus obtaining idealized free damping oscillation magnetic field; and the structure of the invention is simple, and the invention is convenient to use and easy to maintain.

The invention relates to a demagnetizing method and device, and in particular relates to a demagnetizing method and device for a steel wire lining conveyer belt by double magnetic rollers. The demagnetizing method for the steel wire lining conveyer belt by double magnetic rollers comprises the steps of: placing two demagnetizing rollers (1 and 7) respectively above and below the steel wire lining conveyer belt (5), wherein the demagnetizing rollers are multiple-magnetic-pole magnetic rollers with adjacent heterospoles, and the diameters of the demagnetizing rollers are the same, the numbers of the magnetic poles are equal, and the magnetic densities are the same. The two demagnetizing rollers are synchronous at the same speed and rotate in opposite directions (2 and 6), and the heterospoles of the two demagnetizing rollers which rotate synchronously are opposite to each other; and the steel wire (4) lining conveyer belt moves. According to the demagnetizing method and device for the steel wire lining conveyer belt by the double magnetic rollers provided by the invention, the demagnetizing magnetic field is an alternating magnetic field which penetrates through the conveyer belt. The demagnetizing device provided by the invention is simple and compact in structure and easy to implement. Through field conduct and use, the lining steel wire of the demagnetized steel wire lining conveyer belt can be penetrated through more than 10mm, so that a demagnetizing effect is remarkable.

The invention discloses a floatation magnetic separation column device. The top of a column casing is provided with an overflow groove. The upper portion inside the column casing is provided with a spray device and an ore inlet. A pulsed magnet field and a demagnetizing device are mounted outside the column casing. The bottom of the column casing is provided with an iron ore concentrate outlet anda combined type bubble generator, wherein the combined type bubble generator comprises a conical barrel and a suction chamber. The conical barrel is arranged in the column casing in a sleeved manner,and a gap is reserved. The top of the column casing is open and communicates with the interior of the column casing. A tangential water pipe and a feeding pipe are arranged at the positions, on the upper portion of the conical barrel, inside the column casing. The bottom of the conical barrel is provided with a discharging pipe which extends out of the bottom of the column casing. The dischargingpipe is provided with a pump. The other end of the discharging pipe is connected to one side of the suction chamber. The suction chamber is provided with a gas inlet and an auxiliary agent addition opening. The other side of the suction chamber is connected with the feeding pipe of the conical barrel through a small-diameter throat pipe. The floatation magnetic separation column device is simplein structure, high in separation index and easy to operate; the grade of concrete can be remarkably raised; and by means of the combined type bubble generator, the generation quality of bubbles can beimproved, and the number of the generated bubbles can be increased; and the floatation treatment effect is improved.

The invention relates to an intelligent scanning demagnetizing device. The intelligent scanning demagnetizing device is characterized by comprising a tablet personal computer credit card POS machine all-in-one machine, a scanning demagnetizing all-in-one machine, a bill printer, a shopping information display screen, a security door control system, a fitness equipment low-voltage power source interface, a mobile phone charging interface and a storage battery. The intelligent scanning demagnetizing device solves the social problem that time is wasted when people wait in a queue at an exit of a supermarket or a shopping mall, and the operation cost is lowered; the number of charging ports is decreased, salaries of cashiers are reduced, the problems of damage and stealing are solved, meanwhile, commodity prices of the supermarket are stabilized, the function that a consumer can go shopping while surfing the Internet is added, the consumer can achieve self-service shopping only by pushing a shopping cart with the intelligent scanning demagnetizing device, only one minute is enough from payment to the exit after shopping is completed, and the intelligent scanning demagnetizing device has the key role in transforming and updating supermarkets and large shopping malls in the future and improving the service quality, and improves happy lives of people.

The invention belongs to the field of electronic consumption service and particularly relates to a wireless mobile paying device. The wireless mobile paying device is characterized by comprising a host, an infrared code-reading and demagnetizing device, a printer, a consumer card interface, an information duplication management card interface, a commodity code-reading display screen and a storagebattery, wherein the host is internally provided with a control circuit board; the control circuit board is respectively and electrically connected with the information duplication management card interface, the consumer card interface, the printer and the infrared code-reading and demagnetizing device, and stores information sent by each module; and the storage module supplies power to each module. The wireless mobile paying device is compact and reasonable in structure, convenient to install and attractive and practical. As the wireless mobile paying device does not need an external power supply and a signal transmission wire, the complicated manual charging operation of shopping malls is simplified, the salary cost of shopping mall personnel is saved, the time for customers to line up for payment is also omitted, and an easy shopping environment is boosted. Especially in important holidays or festivals gathered by particularly many shoppers, the paying device fixed on a shopping mart allows the shoppers to complete shopping by swiping a card alone, thus fast increasing the customer flow of the shopping malls.

The invention discloses a hysteresis-damping demagnetizing method for a pipeline port, relating to the technical field of pipeline systems. In the method, a demagnetizing coil is wound on the port of a pipeline to be demagnetized, a giant magneto-resistive probe is fixed at an outer edge of the pipeline port and is connected with a data interface of a main controller of a demagnetizing device, the demagnetizing coil is connected with a power output end of the main controller, and then, the method is implemented according to the following steps of: picking up a signal of the giant magneto-resistive probe by the main controller, and measuring the magnitude and the direction of residual magnetism of the pipeline; according to the differences in the magnitude, the direction and the materials of the residual magnetism of the pipeline, automatically calculating an output parameter and controlling a circuit part to covert power-frequency alternating current of 50Hz into high-frequency alternating current of 20-45kHz; and reducing voltage, rectifying current, and controlling the magnitude and the direction of the current required for generating a power source to obtain a magnetic field which is identical to the residual magnetism of the pipeline in magnitude and opposite to the residual magnetism of the pipeline in direction. Compared with the traditional demagnetizing technology, thedemagnetizing method disclosed by the invention has the advantages of advanced control manner, reliability in operating, rapidness in demagnetizing and good demagnetizing effect.

The invention relates to demagnetizing devices, in particular to an electronic information demagnetizing device. The technical problem of the invention is to provide a demagnetizing device which can fully perform demagnetizing, can perform demagnetizing in a sealed environment, and can collect the demagnetized electronic devices. To solve the technical problem, the invention provides the electronic information demagnetizing device. The electronic information demagnetizing device includes a demagnetizing frame; the internal center of the demagnetizing frame is connected to a demagnetizing mechanism; a first through hole is formed in the center of an internal bottom of the demagnetizing frame; the first through hole is positioned under the demagnetizing mechanism; first fixing blocks are connected to a left side and a right side of the bottom of the demagnetizing frame; first grooves are formed in the first fixing blocks; a baffle plate is arranged in the first grooves; a left end and a right end of the baffle plates are positioned in the first grooves; and a right side of the demagnetizing frame is connected to a drive mechanism. The drive mechanism and the demagnetizing mechanism can turn over electronic devices to be demagnetized in the demagnetizing frame.