32results about How to "Act as magnetic isolation" patented technology

The invention discloses an autonomous ventilation and heat exchange type power distribution cabinet, which belongs to the technical field of power distribution cabinets. Inner ventilation hoods and outer dustproof plates are additionally arranged at left and right ventilation openings of a cabinet body, when the cabinet body is in a normal low-temperature environment, a pair of outer dustproof plates are connected to the ventilation openings in a sealed manner, so that the dustproof and moisture-proof effects are achieved, and when the interior of the cabinet body is in a high-temperature environment, a plurality of memory deformation rods connected to a flexible magnetic isolation sheet recover to a spring phase state due to high temperature and pull the flexible magnetic isolation sheet to turn outwards, after an inner magnetic sheet is slowly exposed, the inner magnetic sheet plays a magnetic repulsive role on an outer magnetic sheet, so that an outer dustproof plate moves outwards, and after the outer dustproof plate is separated from a ventilation opening, the elastic dustproof cloth connected between the outer dustproof plate and the positioning frame is exposed, at the moment, air outside the cabinet is guided into the cabinet body through the elastic dustproof cloth, autonomous ventilation and heat exchange are achieved according to the environment in the cabinet, and meanwhile the ventilation and heat dissipation effects are further improved by means of starting of the heat dissipation fan.

The invention relates to the technical field of sound systems, in particular to a sound box system. A sound box body in the sound box system adopts an electromagnet to levitate a loudspeaker, and foot stands are hollow stand columns filled with cast iron powder. The vibration of the sound box system is smaller and the made sound quality is better.

The invention discloses an aluminum alloy supporting frame and belongs to the technical field of aluminum alloy supporting frames. A flame-retardant supporting structure is formed by a lower supporting surface, an upper supporting surface and a packaging panel which are distributed up and down, and primary flame retardance of a supporting plate up and down is achieved through cooperation of fireproof cotton and a flame-retardant foam filling layer; a fire source or a heat source is effectively prevented from being transmitted between cargo layers to a certain extent, safety performance is improved, a plurality of water vapor flame-retardant bodies are distributed in a flame-retardant cavity formed by a bearing plate, under the condition that the fire source is large or the temperature is high, a thermal expansion flame-retardant bag is heated, first inert gas in the thermal expansion flame-retardant bag is heated to expand to extrude an overflow part, under the condition that the pair of gas storage hemispheres are heated and extruded, the inert gas I in the thermal expansion flame-retardant bag is further promoted to overflow into the overflow part, so the fireproof cotton distributed up and down is filled with the cooling liquid, the fireproof cotton can be soaked, and the inert gas I overflows into the fireproof cotton to extinguish a fire source; and the flame-retardant and fire-extinguishing performance of the bearing plate is further improved.

The invention discloses a solar heat collector with high light-collecting and heat-conducting functions, and belongs to the technical field of solar heat collection. A pair of light reflecting pieces is installed at the bottom end of a main heat-collecting pipe, sunlight is reflected to the backlight surface of the main heat-collecting pipe, the light-collecting and heating surface of the main heat-collecting pipe is expanded, in addition, a plurality of auxiliary heat collecting pipes are arranged on the main heat-collecting pipe in a distributing mode, the upper end walls and the lower end walls of the auxiliary heat collecting pipes are both wrapped around magnetic columns through elastic magnetism isolating layers, the magnetic columns are connected to a heat conducting plate through memory alloy rods, and after the temperature of the light receiving faces of the auxiliary heat collecting pipes rises, the memory alloy rods recover to the high-temperature spring phase state and contract to enable the magnetic columns to extrude the elastic magnetism isolating layers, and after the elastic magnetism isolating layers deform, the magnetism isolating effect on the magnetic columns is weakened, so that magnetic attraction strips located on the lower portions have the magnetic attraction effect on the displaced magnetic columns, the auxiliary heat collecting pipes are promoted to rotate to change the light receiving faces of the auxiliary heat collecting pipes, and the circulation is conducted, so that the auxiliary heat collecting pipes are comprehensively and uniformly heated, and heat transfer media are effectively and comprehensively conducted.

The invention relates to the loudspeaker box system technology field and especially relates to a vibration reduction loudspeaker box system. A loudspeaker box body in the vibration reduction loudspeaker box system adopts an electromagnet to suspend a loudspeaker. A foot stand adopts a hollow column which is filled with a cast iron powder. And a top panel is made of a vibration reduction plate. The column, the top panel and a bottom panel are connected and fixed through spot welding. By using the loudspeaker box system, vibration is small and sound quality is good.

The invention relates to the field of loudspeaker system technology and relates to a loudspeaker system. A loudspeaker of a loudspeaker body in the loudspeaker system is suspended by an electromagnet. Foot stands are of hollow stand columns filled with cast iron. Vibration attenuators are arranged on the foot stands. According to the invention, vibration is small and quality of given-out sound is quite high.

The invention relates to the technical field of audio systems, in particular to a sound box. The speaker adopts an electromagnet to suspend the speaker, and the resonance of this speaker is small and the sound quality is better.

The invention relates to the technical field of sound systems, and more particularly to a vibration attenuation sound box. In the vibration attenuation sound box, a loudspeaker is suspended through an electromagnet, a sound box shell is made of a vibration attenuation board, and a vibration attenuation base is arranged at the bottom of a bottom board. The sound box has smaller resonance and has good tone quality.

The invention discloses a permanent magnet motor rotor structure for an electric vehicle. The permanent magnet motor rotor structure comprises an iron core, a first magnetic steel groove group, a second magnetic steel groove group, a first magnetic steel group, a second magnetic steel group and a magnetic barrier, and is characterized in that the magnetic barrier, the first magnetic steel groove group and the second magnetic steel groove group are fixed on the iron core, the first magnetic steel group and the second magnetic steel group are embedded in the first magnetic steel groove group and the second magnetic steel groove group respectively, the included angle of the first magnetic steel groove group ranges from 115 degrees to 175 degrees, the included angle of the second magnetic steel groove group ranges from 75 degrees to 120 degrees, and at least one position of the magnetic barrier is placed in the middle of the second magnetic steel group. According to the invention, a linear magnetic steel group in a traditional V+- linear rotor structure is changed into a v shape, so that the utilization rate of magnetic steel is increased, and the yield strength of a material at a high rotating speed is improved; and by arranging the magnetic barrier, a magnetic isolation effect is achieved, and the utilization rate of the magnetic steel is improved.

The invention discloses a solar heat collector with high light collection and heat conduction, which belongs to the technical field of solar heat collection. A pair of light reflectors are installed at the bottom of the main heat collection tube to reflect sunlight on the backlight surface of the main heat collection tube and expand the main heat collection tube. In addition, multiple auxiliary heat collecting tubes are distributed on the upper end of the main heat collecting tube. The upper and lower end walls of the auxiliary heat collecting tubes are covered with magnetic columns through elastic magnetic isolation layers, and the magnetic columns are connected to the heat conducting plate through memory alloy rods. , when the temperature of the light-receiving surface of the auxiliary heat collector rises, the memory alloy rod returns to its high-temperature spring phase state, and its contraction makes the magnetic column squeeze the elastic magnetic isolation layer, and the elastic magnetic isolation layer deforms and weakens the magnetic isolation effect on the magnetic column , so that the magnetic strip located below acts as a magnetic attraction for the displaced magnetic column, prompting the auxiliary heat collecting tube to rotate and exchange its light-receiving surface, so that the auxiliary heat collecting tube can be fully heated evenly and effectively conduct heat to the heat transfer medium.

The invention relates to the technical field of sound systems, specifically to a vibration-reducing loudspeaker box system. A loudspeaker box main body in the vibration-reducing loudspeaker box system adopts electromagnets to suspend a loudspeaker, and a foot stool is a hollow stand column filled with cast iron powder, and vibration reducing legs are arranged at the bottom of the foot stool. The loudspeaker box system is relative small in vibration, and better in tone quality while producing sound.

The invention relates to the sound equipment system technology field and especially relates to a loudspeaker box. In the loudspeaker box, an electromagnet is used to suspend a loudspeaker, and a base plate and a top plate are provided with perforated plates so as to carry out vibration attenuation and sound absorption. By using the loudspeaker box, resonance is small and sound quality is good.

The invention relates to the technical field of audio systems, in particular to a sound box. The speaker uses electromagnets to suspend the speaker, and the bottom plate and the top plate are provided with perforated plates for vibration reduction and sound absorption. This kind of speaker has less resonance and better sound quality.

The invention relates to the technical field of sound systems, in particular to a sound box system. The speaker body in the speaker system uses an electromagnet to suspend the speaker, and the tripod uses a hollow column filled with cast iron powder. This speaker system has less vibration and better sound quality.

The invention discloses an autonomously ventilated and heat-exchanging power distribution cabinet, which belongs to the technical field of power distribution cabinets. By adding an inner ventilation cover and an outer dust-proof board to the left and right vents of the cabinet body, when the cabinet body is in a normal low-temperature environment, , a pair of outer dust-proof boards are sealed and connected to the vent to prevent dust and water vapor. When the cabinet is in a high-temperature environment, the multiple memory deformation rods connected to the flexible magnetic isolation sheet return to their spring phase state, and pull the flexible magnetic isolation sheet to flip outwards. When the inner magnetic sheet is slowly exposed, at this time, because the inner magnetic sheet acts as a magnetic repulsion to the outer magnetic sheet, the outer dust-proof plate moves outward. After the outer dust-proof board is separated from the vent, the elastic dust-proof cloth connected between the outer dust-proof board and the positioning frame is exposed. At this time, the air outside the cabinet is introduced into the cabinet through the elastic dust-proof cloth to realize the realization according to the environment inside the cabinet. Independent ventilation and heat exchange, and at the same time, with the help of the cooling fan, the ventilation and heat dissipation effect is further improved.

The invention discloses a heat conduction structure for heat dissipation of a PE plate, and belongs to the technical field of PE plates. High temperature at the PE plate can be transmitted and dissipated outwards by arranging a matching structure of a honeycomb heat conduction sheet and heat conduction cotton on the outer end face of the PE plate, a plurality of heat conduction columns are distributed on the upper end face of the honeycomb heat conduction sheet, and the multiple heat conduction columns are high in fixed-point heat conduction performance, and conduct heat to a heat dissipation plate in a centralized manner. When the temperature of the heat conduction columns is too high, a magnetic driving mechanism deforms and is separated from a pair of magnetic grating plates, and at the moment, the pair of magnetic grating plates slide downwards to be separated from a heat dissipation cavity under the gravity action of the magnetic grating plates, so that the conduction area between the heat conduction columns and the heat dissipation cavity is enlarged, the heat conduction columns embedded in the inner side communicate with the outside, so that the heat conduction and heat dissipation performance of the heat conduction columns is effectively improved, rapid cooling of the PE plate is achieved, and in the natural low-temperature state, the magnetic driving mechanism is connected with a pair of magnetic partition plates in a magnetic attraction mode, and sealing, dust prevention and moisture prevention of the heat dissipation cavity are achieved.

The invention relates to the technical field of sound systems and in particular relates to a vibration-damping sound box. According to the vibration-damping sound box, an electromagnet is adopted to keep a loudspeaker suspended; besides, a vibration-damping sound insulation layer is arranged outside a sound box housing; such a sound box is low in resonance and capable of producing good-quality sound.

The invention discloses a ship magnetic separator suitable for seawater separation, which comprises a rack (6), a trough body (1), a permanent magnetic drum (3) and a driving device (2), a magnetic system (8) and a magnetic system fixing device (5). Two ends of a mandrel (7) are made of solid sectional anti-corrosive stainless steel, the middle hollow section and the end solid section of the mandrel (7) are in threaded connection and welded firmly, the two ends of the mandrel (7) are supported by a mandrel bases through copper sleeves (4) in a matching manner, and are in a mutual opposite axial stop design; and the rack (6) is designed to be in a frame structure, adopts high-strength structure carbon steel square tubes, and is in full contact connection with a deck through the bottom surfaces of two parallel beam bottoms. The permanent magnetic drum (3) is made of anti-corrosive stainless steel, and the outer surface of the rack (6) is sprayed with paint which is resistant to seawater corrosion. A feeder box (13) and the trough body (1) are integrally designed. The ship magnetic separator has excellent performance in wind resistance, bump prevention and salt fog prevention, can be installed on the ships operating on rivers and seas to recycle and select the strong magnetic iron minerals in river sand and sea sand.