53results about How to "Increase the magnetic field" patented technology

The present invention is a system and method for utilizing magnetic energy. The basic principles of the present invention may be implemented in a variety of systems and methods. A magnet may be rotated or an electromagnet may be controlled in order to control a magnetic field generated by a set of magnets. As a result, numerous, substantial benefits may be achieved by providing at least one set of multiple magnets. For example, the present invention may be used in systems and methods to perform a variety of functions including, but not limited to: (1) to control, manipulate, hold, and/or release a load; (2) to open and/or close a pathway; (3) to open and/or close a circuit; (4) to apply a magnetic field to a load and/or to remove a magnetic field from a load; (5) to intermittently apply and remove a magnetic field; (6) to increase the magnetic field that may be applied to a load; (7) to induce a load into motion; (8) to create energy; and (9) to improve the energy efficiency of a device or system.

The invention relates to the technical field of new material processing, and discloses a self-adjusting device for grinding a copper-aluminum new material pipeline. The self-adjusting device comprises a grinding disc, wherein pressing blocks are movably connected to the inner wall of the middle of the grinding disc; balls are movably connected to the outer sides of the pressing blocks; grinding pieces are movably connected to the outer side of the grinding disc; electromagnets are fixedly connected to the inner wall of the middle of the grinding disc; and compression springs are fixedly connected to the middle inner wall of the grinding disc. According to the self-adjusting device for grinding the copper-aluminum new material pipeline, the grinding disc drives the pressing blocks to move, the pressing blocks drive adjusting rods to move and then the compression springs and slide rheostats are used in cooperation, so that the effect of self-adaptive adjustment of stretching and retracting of the grinding pieces is achieved; and the pressing blocks move toward the inner wall of movable grooves under the action of the inner wall of a pipeline, at the moment, the compression springs are extruded, the pressing blocks drive the adjusting rods to move downwards, the resistance values of the slide rheostats are continuously decreased, and the voltage at the two ends of the electromagnets is gradually increased, so that the magnetic field generated by the electromagnets is increased, and the grinding pieces are attached to the inner wall of the pipeline.

A fruit and vegetable picking device comprises a first cover body, a coil, a magnetofluid ball and a second cover body. One end of the first cover body is an opening end, and a spherical groove is arranged at the opening end. The coil is spherically distributed in a ring, at least a part of the coil is contained in the spherical groove, and the coil is electrically connected with an external power source. The magnetofluid ball comprises a flexible ball casing and magnetorheological fluid contained inside the flexible ball casing, and a part of the magnetofluid ball is contained in the coil. The second cover body is in a shape of a circular truncated cylinder, the second cover body comprises a big opening end and a small opening end, the second cover body is covered on the magnetofluid ball, the big opening end is fixedly connected with the opening end of the first cover body, one end of the magnetofluid ball protrudes out of the small opening end to form a holding portion which is used for wrapping fruits and vegetables. After the magnetorheological fluid changes into solid, surfaces of the fruits and vegetables are completely contacted with the holding portion, the holding portion can stably hold the fruits and vegetables, dropping of the fruits and vegetables from the inside of the holding portion is prevented, and damage can be avoided.

The invention provides a circumferential magnetic conduction structure of a Hall sensor. The magnetic conduction structure comprises an annular permanent magnet, a Hall chip, a circular ring sleeve and two magnetic conduction blocks, wherein the circular ring sleeve is made of a magnetic conduction material, and the annular permanent magnet is fixed on the inner wall of the circular ring sleeve; the two magnetic conduction blocks are positioned inside the annular permanent magnet, and a gap is formed between the external surfaces of the two magnetic conduction blocks and the internal surface of the annular permanent magnet; and the Hall chip is positioned between the two magnetic conduction blocks. By means of the circumferential magnetic conduction structure disclosed by the invention, a magnetic field is effectively focused at the inner side of the circular ring sleeve so that the magnetic field induced by the Hall chip is stable and has high magnetic intensity; and the circumferential magnetic conduction has the advantages of simplicity for processing and forming.

The invention discloses a preparation method of a chitosan/hydroxyapatite magnetic bone repair support material, and belongs to the field of chemical and biological engineering materials. The method specifically comprises the steps that chitosan/hydroxyapatite nano-composite powder is prepared; magnetic nano-powder, the chitosan/hydroxyapatite nano-composite powder and pore forming substance particles are evenly mixed; then binder silica sol and water are added to be fully mixed to obtain needed slurry; and extrusion forming, drying, demolding, pore forming substance removal and sintering are carried out on the slurry to obtain a composite support. The method is simple and convenient to operate, and the porosity of the obtained support is high. Mechanical performance is good and is equivalent to cancellous bone performance. The cancellous bone repair need can be met, certain magnetism is achieved, and the proliferation and differentiation of osteoblast can be stimulated. Hydroxyapatite in the composite powder is distributed in a chitosan matrix in a needle shape with nanometer as the scale, biocompatibility can be improved, the toxic reaction of cells can be reduced, and the good application prospect is achieved.

Provided is a permanent magnet that effectively utilizes a magnetic field and improves motor torque. In the cross-section in the longitudinal direction, one of the front and the back is used as the action surface L1, and the action area L2 narrower than the action surface L1 is provided in the action surface L1, and the action area L2 that is in contact with the aforementioned action surface L1 is provided. The non-active surface H1 on both sides of the permanent magnet and the non-active surface H2 that is in contact with the two side surfaces H1 and is located on the opposite side of the active surface L1. The characteristic of this permanent magnet is that the magnetic powder particles constituting the magnet are easily magnetized. In essence, the orientation is convergent from the non-active surfaces H1 and H2 to the active area L2, and the length relationship between the length of the non-active surface H1 and the length of the active surface L1 satisfies 1/10≤H1/L1≤10/10, while the length of the active area L2 and The length relationship of the acting surface L1 satisfies 35/100≤L2/L1≤98/100.

In an optics system, a flexible mirror is deformed with an electromagnetic force. In one embodiment, an electrical current is directed through the mirror, or a conductor attached to the mirror, in the presence of a magnetic field. In one application in an adaptive optics system, the membrane mirror is used in a wavefront sensor. Deformed to oscillate between convex and concave positions, the mirror is used to alternately defocus a received light signal for determining aberrations in the light signal. By detecting aberrations in the light signal, the adaptive optics system can correct for those aberrations.

The invention, which relates to the technical field of the magnetic field imaging, provides a heavy-current low-power magnetic field signal difference acquisition apparatus. On the basis of improvement of a traditional gradiometer, a secondary magnetic field can be measured easily; and the apparatus has the great research values and practical application value. According to the technical scheme, the apparatus is formed by an excitation unit clamped between two receiving units; and the excitation unit is a low-power heavy-current LC oscillating circuit and is formed by parallel connection of inductive capacitors. The apparatus is mainly applied to the design and manufacturing of magnetic field imaging equipment.

The invention discloses an automatic water supply device for high-rise building fire protection. The device comprises a main water storage tank, and is characterized in that a high-rise water flow compensation device, a power failure independent water supply device and a fire protection emergency water supply device are arranged at the right side of the main water storage tank; the high-rise waterflow compensation device comprises a main output pipe welded at the right side of the main water storage tank; a water pump is fixedly installed in the main output pipe; the main output pipe is fixedly installed in a wall; water inlet tanks are evenly arranged at the right side of the main output pipe; water inlets are formed in the upper ends and the lower ends of the left sides of the water inlet tanks respectively; floor water outlet pipes are arranged on the right sides of the water inlet tanks; spiral rods are connected with the right sides of the floor water outlet pipes in a sleeved mode; and the outer sides of the spiral rods are in meshed connection with magnetic spiral sleeves. The automatic water supply device for high-rise building fire protection has the characteristics in that the water flow of high-rise users can be increased, and the device can still be continuously used in emergency or when the device is damaged.

In a position detecting apparatus, a magnetic scale part has a magnetic pattern formed by magnetization along a longitudinal direction. An increased magnetization part is arranged at an end portion of the magnetic scale part in the longitudinal direction. The increased magnetization part is magnetized with an increased intensity of magnetization as compared to the magnetic scale part. A magnetic field shaping part is disposed adjacent to the magnetic scale part for shaping a magnetic field generated from the magnetic scale part. A magnetic detection part detects both the magnetic field from the magnetic pattern of the magnetic scale part and the magnetic field from the increased magnetization part. The magnetic detection part is arranged in opposed relation to the magnetic scale part movably in the longitudinal direction of the magnetic scale part. The magnetic pattern and the increased magnetization part are arranged along a track through which the magnetic detection part moves.

Main coils, counteracting coils and correction coils, each forming superconducting coil, are enclosed in two cooling medium chamber facing to each other and an imaging region is formed between the two cooling medium chamber positioned in each vacuum chamber, the main coils being divided into two pieces to reduce the current density and the maximum experience magnetic filed and compression stress.

Structures and methods for making a magnetic structure are discussed. Various embodiments increase a magnetic field to unambiguously select a magnetic memory cell structure. One method includes folding a current line into two portions around a magnetic memory cell structure. Each portion contributes its magnetic flux to increase the magnetic field to unambiguously select the magnetic memory cell structure. Another method increases the flux density by reducing a cross-sectional area of a portion of the current line, wherein the portion of the current line is adjacent to the to the magnetic memory cell structure.

The invention discloses a novel shock-absorbing elevator. The elevator comprises an elevator body, wherein a solenoid I is fixed at the bottom of an elevator basket, a lead I winds around a timber pile and is connected with a storage battery I in series, the storage battery I is fixed on the elevator body, a solenoid II is fixed on the ground right below the basket, a lead II winds around the solenoid II, a storage battery II is fixed on a ground base, and the lead II is connected with the storage battery II in series. The elevator has a shock-absorbing function so as to play a role in protecting the basket.

The invention discloses a high-temperature self-shading oxygen supply type microbiological treatment box, which comprises a box body, a strip-shaped cavity is formed in the upper end of the box body;magnetorheological fluid is arranged in the strip-shaped cavity; an elastic film is fixedly connected to the top in the strip-shaped cavity, a sliding plug cavity is formed in the side wall of the boxbody, a conductive plate is slidably connected to the inner wall of the sliding plug cavity in a sealed mode, expansion liquid is arranged in a closed space formed by the lower end of the conductiveplate and the inner wall of the sliding plug cavity, and the upper end of the conductive plate is elastically connected with the top in the sliding plug cavity through an elastic wire. When the temperature in the box body rises, the volume of expansion liquid is expanded; the conductive plate is pushed to slide upwards; and when the conductive plate slides upwards to be in contact with a resistance plate, two electromagnets are electrified to generate a magnetic field, so that the magnetorheological fluid is gradually changed into a viscous state under the action of electromagnet magnetism, the light transmittance of the magnetorheological fluid is reduced, external sunlight is blocked, and the situation that a large number of microorganisms die due to the fact that the temperature in thebox body rises under sunlight irradiation is avoided.

The DNA extraction kit based on the paramagnetic particle method comprises a kit body, a test tube groove is formed in the kit body and used for containing test tubes, the test tube groove comprises a test tube groove wall and a test tube groove bottom plate, and the test tube groove bottom plate is supported by the lower portion of the test tube groove wall; the test tube groove wall and the test tube groove bottom plate of the test tube groove are respectively connected with a bouncing module of the magnetomotive unit; the magnetomotive unit comprises a bounce module, a central magnetic module and a reset module, and the reset module enables the central magnetic module to reset to an initial position without external force after the central magnetic module rotates forwards and reversely; at the initial position, the mutual exclusion force of the central magnetic module and the bouncing module is smaller than the bouncing sliding resistance of the test tube groove bottom plate and the test tube groove wall; after the central magnetic module rotates, the same part or all of the bouncing modules repel each other, so that the test tube groove bottom plate or the test tube groove wall overcomes resistance to bounce.

The invention discloses an energy-saving filtering type power transformer, which comprises a transformer main body and a main circuit, wherein the transformer main body comprises a primary end and a secondary end, the primary end is connected with mains supply, the secondary end is connected with the main circuit, a main inductance coil and a main capacitor are arranged on the main circuit, the main inductance coil and the main capacitor form series resonance or parallel resonance on the main circuit, the inductance of the main inductance coil can be controlled and adjusted according to the size of a high harmonic component at the secondary end, the power transformer further comprises a signal circuit, the signal circuit is connected to the side, close to the secondary end, of the main circuit in parallel, and comprises a signal resistor and a plurality of signal branches, each signal branch is provided with a first inductor, a first capacitor and a signal transmission end which are connected in series, the inductor and the capacitor on each branch form high-order resonance of the position, and the signal transmission end on each branch is used for controlling the inductance of the main inductance coil after acquiring the current of the branch.

The related preparation method for ferrite in microwave oven comprises: crushing the pre-calcinined ferrite into powder material; adding water into the powder to grind into slurry with additive; putting the slurry into an alnico mold with magnetic contour as focus distribution and continual-vatiable included angle between magnetic contour and axial direction; and sintering the formed biscuit into a calcinied one. The opposite mold for former method comprises an upper film embedded a permanent magnet with Nd, Fe and B; and a lower film with a convex mold welted by a magnetic-conductive block and an inverse block with a combination surface as arc. This invention is more convenient to improve the intermediate air-gap magenetic field and up-to-standard rate, and fit to variable request by setting ifferent focus point.