33results about How to "Achieve physical separation" patented technology

The invention discloses a rhizosphere soil sampling device, comprising a square box, where two mesh dividing pieces seamlessly connected with the box are symmetrically arranged in the cavity of the box, so as to divide the cavity into left, middle and right chambers, the two mesh dividing pieces are parallel with the centre line of the box, at least a mesh insert piece is arranged in each of the left and right chambers, the mesh insert piece seamlessly adheres to the adjacent mesh dividing piece, and the mesh insert pieces in the left and right chambers are symmetrical to the center line of the box, the mesh diameters of the mesh dividing pieces and mesh insert pieces are all 25 microns. And the sampling device can implement sampling of rhizosphere soils at different mm levels.

The invention provides a log file automatic generation method based on model driving, and belongs to the field of combination of software system structure modeling and log file automatic generation. The method comprises: based on a software system structure modeling idea, coding functional components of all layers of an application program, and using an automatic mapping mode to replace log information containing internal definitions of an application system; and then intercepting user information corresponding to corresponding operation behaviors, generating log contents together with other necessary system description information, and storing the log contents in a log file or database file form. Meanwhile, collection work of the log information can be started or stopped at will by modifying the configuration file, and existing log information can be expanded or deleted according to real-time needs. Physical separation and logic independence of the log system and the application system are achieved, comprehensive, detailed and extensible log content is guaranteed, the application system can be maintained, and the follow-up data analysis work efficiency is improved.

The invention discloses a method for refining bismuth from bismuth oxide slags. The bismuth oxide slags and reduction agents are subjected to reduction smelting, liquation decoppering, primary lead removal through chlorine, vacuum distillation for silver removal, secondary lead removal through chlorine, high-temperature refining for dechloridation, and caustic soda flakes adding for tellurium removal, and finally refined bismuth is obtained. Alloy containing silver, copper, bismuth, lead and the like directly enters the decoppering procedure, wet pretreatment is omitted, the decoppering procedure is simplified, copper matte and silver-zinc crusts are prevented from being generated, the usage amount of nitric acid in a wet section is reduced, emission of nitric oxide in the nitric acid dissolving process is reduced, and pollution to the environment is reduced; after a zinc adding and silver removal technique is changed into the vacuum distillation for physical silver removal technique, the silver-zinc crusts which are difficult to treat are eradicated, physical separation of silver and bismuth is achieved to the maximum extent, and the recovery rate of silver is increased; and the usage amount of coal gas and auxiliary materials is reduced, the labor intensity of workers is relieved, the production period of the refined bismuth is shortened, the production cost of the refined bismuth is reduced, and the direct recovery rate and the recovery rate of the refined bismuth are increased.

The invention relates to the technical field of an electric short-circuit protection device, in particular to a multifunctional fireproof short-circuit protector with a redundant device. The multifunctional fireproof short-circuit protector comprises a switch power supply, a current sampling device, a digital signal processor, a large-current power module, an isolation driving module, a redundant device, a charge absorption circuit and a load; the redundant device is a controlled mechanical switch, and an end L of an alternating-current power 220V is respectively connected with a resistor R1, the input end of the switch power supply, the input end of a differential amplifier and one end of the current sampling device. The multifunctional fireproof short-circuit protector is used in different alternating-current strong current fields such as household power, industrial power and the like, when the load is short-circuited, the abnormal power supply circuit is disconnected instantaneously at a microsecond speed, and no dangerous spark is produced on the short-circuit position; when the abnormal situation such as electric leakage happens in an electrical loop, the electric-leakage circuit is also disconnected at a high speed by the device; through the redundant device, even when the extreme situation that the large-power current module or the digital signal processor is abnormal occurs, the reliability of the device also can be guaranteed.

The invention discloses a mixed excitation flux switching motor having a stator with a claw pole bypass structure. The stator, a rotor and an air gap which are coaxially arranged are arranged on a motor; the stator is composed of a plurality of U-shaped stator iron cores equidistantly arranged at intervals along the circumference, a permanent magnet embedded between the adjacent U-shaped stator iron core teeth, an armature winding wound on the adjacent U-shaped stator iron core teeth, a claw pole bypass component and an excitation coil; the claw pole bypass component is composed of a primary iron core ring connected with U-shaped stator iron core magnet yokes with different magnetic polarities through the claw pole, a secondary iron core ring and a shielding iron core ring for connecting the primary iron core ring and the secondary iron core, the primary iron core ring, the secondary iron core and the shielding iron core ring form an annular cavity structure in a surrounding way; the excitation coil is placed in the annular cavity; and the rotor is composed of a rotor iron core and a rotor salient pole. The flux switching motor main body structure cannot be changed, the motor has reliable structure and can conveniently regulate the air gap magnetic field by placing the excitation coil through the claw pole bypass structure, and is suitable for the wide-speed regulation application occasion.

The invention relates to the technical field of nozzle removal processing of die-casting power boxes, in particular to a nozzle removal processing device for die-casting power boxes, including a bearing platform, a drainage mechanism, a rotating mechanism, a fixing mechanism, a grinding mechanism, a filtering mechanism, a safety mechanism and an auxiliary box, the drainage mechanism is arranged obliquely on the top of the bearing platform, the rotating mechanism is arranged in the bearing platform along the length direction of the bearing platform, and the fixing mechanism includes a plurality of fixing mechanisms, each of which is arranged above the bearing platform in sequence And it is located on the top of the rotating mechanism, the grinding mechanism is fixedly arranged on one side of the bearing platform and the grinding mechanism cooperates with the fixing mechanism, the safety mechanism is arranged on the top of the grinding mechanism, and the filter component is fixedly arranged on the bearing platform On the other side, the auxiliary box is arranged on the outer wall at one end of the carrying platform. Through the operation of the above components, a cleaning processing device capable of batch processing the nozzles of the die-casting power box and a high safety factor is realized.

The invention provides a four-degree adjustable simple accelerated environment test device which comprises a test box capable of controlling temperature and irradiance, a light-transmitting inner cabin is arranged in the test box, an independent salt mist environment is formed in an inner cavity of the light-transmitting inner cabin, and a dry heat environment and an irradiation environment are formed outside the light-transmitting inner cabin and inside the test box. The temperature, the humidity, the irradiance and the salt mist concentration in the test box and the light-transmitting inner cabin can be cooperatively controlled, meanwhile, evaporation of a salt solution can be flexibly promoted, the formed salt mist is closer to a natural state, light irradiation and the temperature are transmitted to a sample through the light-transmitting inner cabin, and the salt mist concentration is reduced. The device not only can be used for developing a four-factor acceleration test in a marine environment, but also can be used for developing a natural environment test in the marine environment by taking out the light-transmitting inner cabin, and can also be used for developing a three-factor environment acceleration test.

The invention discloses an opening type integration small-size rubidium spectral lamp used for small-size rubidium atom frequency scale. The opening type integration small-size rubidium spectral lamp includes a bulb and a lamp head, the lamp head is internally provided with a coil skeleton mounting through hole, the inner end of the coil skeleton mounting through hole is provided with a cone-shaped clamping seat, the coil skeleton mounting through hole is internally provided with a coil skeleton, the external wall of the coil skeleton is fitted with the inner wall of the coil skeleton mounting through hole, the inner wall of the coil skeleton is provided with an inner thread, the inner thread on the inner wall of the coil skeleton is provided with an oscillator coil in an embedded mode, the tail of the bulk is formed in the cone-shaped clamping seat, the oscillator coil is electrically connected with an incentive PCB plate, the bulk is fixed on a thermal insulation gasket sheet, the external end of the coil skeleton mounting through hole is provided with a sapphire glass sheet, and the lamp head is provided with a heating pipe and a temperature-sensing element. According to the opening type integration small-size rubidium spectral lamp, the design requirements of small volume, low operating temperature and high reliability can be met, and the opening type integration small-size rubidium spectral lamp has the advantages of simple debugging, good process consistency and convenient batch production, and can be used in large and medium batch production of small-size rubidium frequency scale.

The invention relates to a test decoupling device for realizing the physical separation of excitation characteristics of a centrifugal fan. The volute is fixedly connected with a separation decoupling bracket 2 through a connecting disk, the separation decoupling bracket 2 is fixed on the support base of the decoupling system, and the impeller is directly installed. On the motor shaft of the driving motor, the machine feet of the driving motor are installed on the supporting base of the driving system. The supporting base 1 of the decoupling system and the supporting base of the driving system are independent of each other to realize the physical separation between the volute and the rotor of the motor. Acceleration sensors are arranged at the foot of the machine, which are used to measure the shaft frequency and harmonic frequency of the shaft system composed of the motor rotor and impeller, and the electromagnetic excitation frequency of the motor; acceleration sensors and dynamic The pressure sensor is used to measure the blade frequency and its harmonic frequency and the fan broadband air flow excitation, and the acceleration sensor and the dynamic pressure sensor are respectively connected to the data analysis device.