9results about How to "Speed adjustment" patented technology

The utility model discloses a tea dryer with a speed regulating mechanism. The tea dryer comprises a drying box; the placing mechanism comprises a rotating shaft and a mounting groove; the rotating shaft is rotationally inserted into the drying box; the mounting groove is formed in the top of the rotating shaft; the speed regulating mechanism comprises a driving shaft, a small gear I and a large gear I, the driving shaft is rotationally inserted into the top of the drying box, and the small gear I and the large gear I are sequentially and fixedly connected to the surface of the driving shaft in a sleeving mode from top to bottom. The first large gear and the second small gear are connected in a meshed mode or the first small gear and the second large gear are connected in a meshed mode, the rotating speed of the rotating shaft can be adjusted, and the differential requirements for the rotating speed in different stages of tea drying are met.

This application provides a method, apparatus, and electronic device for controlling a motor. Without using a Hall sensor or other device to detect motor speed, the processor in the electronic device calculates the peak voltage of the AC power supply driving the motor using a zero-crossing detection signal. Then, based on the peak voltage, it determines when the motor speed needs adjustment. The voltage control circuit adjusts the AC power supply voltage to the motor, thereby achieving motor speed adjustment. Therefore, this application reduces the structural complexity and cost of the electronic device while controlling the motor, and also improves the user experience of the electronic device.

This invention provides a loader control system for installing a snow blower, belonging to the field of snow blower technology. It includes a travel pump, a travel motor, a working pump, a working motor, an engine, and a controller. The input end of the travel pump is connected to the output shaft of the engine, and the output end of the travel pump is connected to the input end of the travel motor via a hydraulic pipe. The input end of the working pump is connected to the output shaft of the engine, and the output end of the working pump is connected to the input end of the working motor via a hydraulic pipe. The controller is electrically connected to the control terminal of the engine and the displacement solenoid valves on the travel pump and travel motor, respectively. This invention enables the loader's engine to control both the loader's travel and the snow blower's operation, ensuring that the loader's speed matches the snow blower's operating speed, thus reducing production costs.

The application relates to the technical field of anaerobic digestion equipment, and discloses a high-solid anaerobic digestion reactor, which comprises a main body structure, a driving structure and an agitation structure, the driving structure is fixedly arranged in the main body structure, the agitation structure is fixedly arranged on the driving structure, and the agitation structure is driven to rotate through the driving structure. The application has the beneficial effects that two-stage speed regulation is adopted to adapt to the whole process of anaerobic digestion, the working condition requirements from cold start to normal reaction are adapted, the stirring form and the rotating speed are double-regulated, the whole efficient mixing is realized, the stirring difficulty of viscous materials is solved, the inner and outer double layers are cooperatively heated, stirred and heat-conducted, the whole uniform heating is realized, and the thermal fault is completely eliminated; the mechanical structure is simple and has high linkage, the equipment development and operation energy consumption are reduced, the pipeline of the main body structure is flexibly configured, and different treatment scenes and process requirements are adapted.

This invention discloses a variable-speed adjustable electric centrifugal pump with flow feedback and its flow control method, belonging to the field of aero-engine control technology. The electric centrifugal pump includes a permanent magnet synchronous motor, a centrifugal pump, a differential pressure regulating valve, a metering valve, a linear variable differential transformer (LVDT), and a motor controller. The motor controller receives fuel mass flow commands from the engine controller and metering valve opening signals from the LVDT, and outputs motor control commands to adjust the centrifugal pump speed to change its outlet pressure. The differential pressure regulating valve senses this pressure change and drives the metering valve core to move, changing the opening of the metering orifice, thereby regulating the fuel flow. The LVDT detects the opening in real time and provides feedback, forming a closed-loop flow control. This invention achieves on-demand supply of pump outlet pressure through variable-speed regulation and achieves precise flow measurement and feedback through the synergistic effect of the differential pressure regulating valve and the metering valve, eliminating the pressure loss caused by traditional throttling valves and significantly improving system efficiency.

The present application provides a kind of experimental device and method for simulating cuttings migration when formation gas production in gas drilling, gas circulation system, for simulating gas supply problem of drilling;Cuttings supply and recovery system, for simulating cuttings production when gas drilling, and filtering and recycling the discharged cuttings;Drill pipe rotation and eccentric system: including transparent wellbore, the front and rear ends of transparent wellbore are connected with cuttings supply and recovery system;Drill pipe is set in transparent wellbore by eccentric adjusting device;Formation gas production system: for simulating the gas production scene when actual wellbore encounters gas layer;Wellbore lifting system: for adjusting the inclination angle of transparent wellbore;Data measurement and processing system: multiple monitors and control equipment are provided, which are connected with computer, constitute data control and acquisition system, realize intelligent control.This application can simulate the cuttings migration law when formation gas production in gas horizontal drilling, and provide reliable basis for cuttings migration law problem when formation gas production.

The embodiment of the invention provides an exhaust method and device for a hydraulic lash adjuster in a vehicle, electronic equipment and the vehicle. The method comprises the steps that the oil level height of engine oil stored in an oil pan in the vehicle is determined; in response to the situation that the oil level height is lower than the height threshold value, the space inclination angle of the vehicle and the maximum inclination angle threshold value allowed by an engine in the vehicle at the current rotating speed are determined, and the space inclination angle is used for representing the inclination state of a vehicle body of the vehicle relative to the engine; obtaining the speed of the vehicle in response to the situation that the space inclination angle is smaller than or equal to the maximum inclination angle threshold; adjusting the rotating speed of the engine based on the vehicle speed and the current rotating speed; and controlling a hydraulic lash adjuster in the engine to exhaust internal gas by utilizing the adjusted rotating speed. The technical problem that the performance of the pressure gap adjuster is reduced is solved.

The utility model relates to nylon filament stretching technical field, specifically disclose a kind of nylon filament variable-speed temperature control stretching device, including device baseplate, the side of device baseplate is connected with guide roller by bearing rotation, the sidewall of device baseplate is equipped with the stretching component for to filament stretching, the one end of device baseplate is equipped with the cleaning component for to filament cleaning;The stretching component includes low-speed roller, the low-speed roller is installed in the sidewall of device baseplate, the one end of low-speed roller is fixed with driving wheel, the outer wall of driving wheel is connected with belt.The stretching component of being set, driving wheel rotates by belt and drives driven wheel to rotate when driving wheel rotates, the rotational speed of driven wheel is greater than driving wheel, and further synchronous drive high-speed roller rotates, under the cooperation of low-speed roller, can be stretched to filament, and the rotational speed of stepper motor is controlled by controller, the rotational speed of high-speed roller and low-speed roller can be adjusted, the effect of synchronization can be realized, guarantee the stretching effect of long line.

This utility model discloses a screw structure for an extruder, belonging to the field of extruder technology. The structure includes a screw housed within a casing, comprising a first rod and a second rod rotatably connected to each other. A first gear set is connected to one side of the screw, and a second gear set is correspondingly located on one side of the first gear set. The second gear set is driven by a first cylinder to achieve displacement. The advantage of this utility model is that by driving the second gear set to displacement with the first cylinder, its meshing connection with the first gear set can be changed, thereby allowing the first and second rods to rotate independently at different speeds. This design can precisely optimize the speed matching of each section of the screw, effectively improving extrusion speed and yield, significantly enhancing the adaptability of the equipment to different production needs, and expanding its application range.