Abstract: A sprayer includes a sprayer body. The sprayer body is provided with a liquid material inlet, a liquid material nozzle, a gas inlet, a gas nozzle, a liquid material channel, and a gas channel. The liquid material nozzle and the liquid material inlet both communicate with the liquid material channel, the gas nozzle and the gas inlet both communicate with the gas channel, and the gas nozzle is provided at the liquid material nozzle. A dispersing member is provided in the liquid material channel and disposed at the liquid material nozzle. The dispersing member divides the liquid material channel into multiple sub-channels communicating with the liquid material nozzle.

Abstract: A stirring device includes a tank, a first stirring mechanism, a second stirring mechanism, and a flow blocking mechanism located in the tank and arranged on a side wall of the tank. A first stirring shaft of the first stirring mechanism is located in a middle part of the tank, and one end of the first stirring shaft is provided with a radial-flow stirring paddle located in the tank. A second stirring shaft of the second stirring mechanism is located on one side of the first stirring shaft. The second stirring shaft and the first stirring shaft are arranged in a radial direction of the tank. One end of the second stirring shaft is provided with an axial-flow stirring paddle located in the tank. The flow blocking mechanism is configured to block movement of materials in the tank.

Abstract: A display device, comprising frame assembly (EE) that comprises a plurality of first frames (E1) located above and on two sides of the display module (MDL), the first frame (E1) comprises a first inner side wall (E11), a first outer side wall (E12) and a connecting side wall, and the connecting side wall comprising a first connecting side wall (E131) and a second connecting side wall (E132), which is located on the front side of the first connecting side wall (E131); the first connecting side wall (E131), the second connecting side wall (E132), the first inner side wall (E11) and the first outer side wall (E12) form a first cavity (E1A); and the first inner side wall (E11) is connected to the display module (MDL) by means of a screw (DD1), which has an end cap located in the first cavity (E1A).

Abstract: A metro rail corrugation measurement method based the Seq2Seq model and vibration and noise data fusion comprises the following steps: Constructing a time series data set corresponding to floor longitudinal acceleration and train speed based on historical data of metro trains; Constructing the metro train mileage matching prediction model based on the Seq2Seq model, training the metro train mileage matching prediction model by time series data sets, and inputting the inside floor longitudinal acceleration of the metro train to be detected into the trained metro train mileage matching prediction model to obtain the running speed of the metro train to be detected. According to the vibration and noise data of the metro train to be detected, the vibration and noise composite index of the rail corrugation is calculated to determine the wavelength and amplitude information corresponding to the rail corrugation.

Abstract: A pulverizer includes a support frame, a stator, and a rotor. The stator is connected to the support frame and has a stator pulverizing surface. The rotor is connected to the support frame and has a rotor pulverizing surface, and the rotor is rotatable. The stator pulverizing surface is opposite to the rotor pulverizing surface, a pulverizing chamber is formed between the stator pulverizing surface and the rotor pulverizing surface, and a distance between the stator pulverizing surface and the rotor pulverizing surface is adjustable.

Abstract: Embodiments of the present application provide a crushing and drying device, including: a classification unit, a first box body, and a second box body connected in sequence along the direction of gravity, the first box body being configured to accommodate and crush materials, the second box body being configured to convey airflow to the first box body to dry the materials, and the classification unit being configured to screen out and discharge crushed and dried target materials, the target materials being materials with particle sizes less than a preset threshold.

Abstract: A drying system includes a drying chamber, a collecting apparatus, and an air feed apparatus. The drying chamber is configured to accommodate a material to be dried. The collecting apparatus is connected to a material outlet of the drying chamber. The air feed apparatus is connected to an air inlet of the drying chamber and is configured to feed air to the drying chamber. The air feed apparatus includes a first condensing mechanism, a first heating mechanism, and a first water content sensor, where along an air feed direction of the air feed apparatus, the first condensing mechanism is located upstream of the first heating mechanism; the first condensing mechanism is configured to reduce water content of gas entering the drying chamber; and the first heating mechanism is configured to heat the gas entering the drying chamber.

Abstract: An air-blowing roller includes: a roller body, where a plurality of air outlets are disposed on an outer peripheral surface of the roller body, the plurality of air outlets are arranged along an axial direction of the roller body, an air exhaust direction of the air outlets is tangent to the outer peripheral surface of the roller body, and air exhaust directions of the plurality of air outlets are consistent. A dust removal apparatus includes a conveyance mechanism, an air-blowing roller assembly, and an air intake roller assembly.

Abstract: The present application relates to a drying apparatus and a system for preparing batteries. The drying apparatus includes a drying tower and a cooling mechanism. The cooling mechanism is disposed on the drying tower, and the cooling mechanism is used for cooling the inner wall of the drying tower, so that the temperature of the inner wall of the drying tower is controlled within the required temperature range. In this way, when the drying tower performs spray drying operation, after the material is in contact with the inner wall of the drying tower, the phenomenon that the material melts because of a high temperature of the inner wall and adheres to the inner wall is avoided. This reduces the probability of the material hanging on the wall, thereby improves the production rate and granulation quality of the material.

Abstract: A method and device for estimating a carrier frequency offset, and a computer-readable storage medium are provided. The method includes: determining a target area where a phase discrimination signal is located, wherein the target area is one of N numbers of candidate areas, the N numbers of candidate areas correspond to different value ranges, an union range of the N numbers of candidate areas is [?, ??], and N?2; determining a first estimation value of a direct current component corresponding to the phase discrimination signal based on the target area; and performing a carrier frequency offset compensation on the phase discrimination signal based on the first estimation value of the direct current component.

Abstract: A method and device for estimating a carrier frequency offset, and a computer-readable storage medium are provided. The method includes: determining a target area where a phase discrimination signal is located, wherein the target area is one of N numbers of candidate areas, the N numbers of candidate areas correspond to different value ranges, an union range of the N numbers of candidate areas is [?, ??], and N?2; determining a first estimation value of a direct current component corresponding to the phase discrimination signal based on the target area; and performing a carrier frequency offset compensation on the phase discrimination signal based on the first estimation value of the direct current component.

Abstract: Provided are a sub-carrier estimation method in a multi-carrier communication system and an apparatus. The method includes: receiving a data frame transmitted by a transmitting end, and extracting a training sequence from the data frame; performing fast Fourier transform operation on the training sequence and a preset reference sequence, respectively, to obtain frequency domain data of the training sequence and frequency domain data of the reference sequence, and conjugately multiplying the two kinds of frequency domain data; extracting real part of conjugate multiplication result; averaging values in each column of an M×N array, respectively, to obtain an output array of 1 row and N columns; and estimating, according to the value in each column of the output array of 1 row and N columns, whether valid data is transmitted over N sub-carriers corresponding to the output array of 1 row and N columns.

Abstract: A receiving circuit, a transmitting circuit, a micro-controller, and a method for power line carrier communication. The receiving circuit includes: an analog amplifier, a receiving filter, an analog-to-digital converter, a digital mixer, a digital filter, and a digital demodulator connected successively. The transmitting circuit includes: a digital modulator, a gain controller, a digital-to-analog converter, a transmitting filter, and a transmitting amplifier connected successively. The micro-controller includes a central processor and the receiving circuit or the transmitting circuit. The method for power line carrier communication can be implemented based on the receiving circuit or the micro-controller.

Abstract: A receiving circuit, a transmitting circuit, a micro-controller, and a method for power line carrier communication. The receiving circuit includes: an analog amplifier, a receiving filter, an analog-to-digital converter, a digital mixer, a digital filter, and a digital demodulator connected successively. The transmitting circuit includes: a digital modulator, a gain controller, a digital-to-analog converter, a transmitting filter, and a transmitting amplifier connected successively. The micro-controller includes a central processor and the receiving circuit or the transmitting circuit. The method for power line carrier communication can be implemented based on the receiving circuit or the micro-controller.