4results about How to "Adjustable wind speed" patented technology

The invention discloses a portable fan based on a three-phase micromotor, the portable fan comprises a power supply circuit, a controller, a drive axle circuit and the three-phase micromotor, the power supply circuit comprises a rechargeable battery, and the power supply circuit is connected with a power supply end of the controller and a power supply bus of the drive axle circuit; a driving pin of the controller is connected with a driven end of the drive axle circuit, three output ends of the drive axle circuit are connected with three electrodes of the three-phase micromotor, and the controller is used for outputting a driving signal to drive the drive axle circuit to generate three-phase alternating current of sine waves to drive the three-phase micromotor to start, stop or regulate the speed. The drive axle circuit is directly controlled by the controller, so that a drive chip of the drive axle circuit is omitted, and the cost is saved; on the other hand, compared with square wave driving, three-phase current driving based on smoother sine waves greatly reduces noise and power consumption of the three-phase micromotor, and the cruising ability is improved.

This utility model aims to provide a device for automatically drying vehicle axle shells after soaking and cleaning. It includes a left drying chamber, a right drying chamber, a traction mechanism, and axle shell material carts. The left and right drying chambers are symmetrically arranged with a slide rail in the middle. The traction mechanism is mounted on the slide rail, with a set of axle shell material carts fixed at each end. The traction mechanism can move left and right along the slide rail. When the traction mechanism moves to the left end of the slide rail, the axle shell material cart at its left end is fed into the left drying chamber, while the axle shell material cart at its right end remains outside the right drying chamber. Conversely, when the traction mechanism moves to the right end of the slide rail, the axle shell material cart at its right end is fed into the right drying chamber, while the axle shell material cart at its left end remains outside the left drying chamber. This device is used to transport manually cleaned axle shells to the drying chamber for drying. This device overcomes the shortcomings of existing technologies and has the advantages of high efficiency, immunity to environmental factors, effective prevention of secondary pollution, improved quality of subsequent processes, and beneficial storage.

The invention relates to the technical field of tobacco production mechanical equipment, and particularly discloses a three-stage winnowing device for tobacco primary processing, which comprises a first-stage winnowing mechanism, a second-stage winnowing mechanism and a third-stage winnowing mechanism. The first-stage winnowing mechanism comprises a first-stage feeding and screening assembly, a first-stage winnowing box and a first-stage impurity discharging assembly. The second-stage winnowing mechanism comprises a second-stage feeding and screening assembly, a second-stage winnowing box and a second-stage impurity discharging assembly; the third-stage winnowing mechanism comprises a third-stage feeding and screening assembly, a third-stage winnowing box and a third-stage impurity discharging assembly. By means of the device, due to the fact that the air speed of the first-stage winnowing box, the air speed of the second-stage winnowing box and the air speed of the third-stage winnowing box are all adjustable, a three-stage independent progressive structure is achieved, then stem slivers with different particle sizes (large stem slivers are larger than or equal to 1.5 mm, medium stem slivers are 0.8-1.5 mm, and thin stem slivers are smaller than or equal to 0.8 mm) in tobacco shreds can be accurately removed step by step, and the total removal rate is larger than or equal to 99%; the content of tobacco shreds in rejected matters is reduced to be less than or equal to 3%;

The blowing and sucking machine comprises a machine body, one side of the machine body is connected with a speed adjusting device, the speed adjusting device comprises a control sleeve, an adaptive rod, a connecting pipe, adaptive holes, an adaptive pipe, a matching rod, a matching sleeve and a fixing pipe, the adaptive holes are formed in the outer wall of the adaptive pipe, the matching rod is connected to one end of the adaptive rod, and the matching sleeve is connected to the other end of the adaptive rod. A locking mechanism is arranged on the outer side of the connecting pipe and comprises a sliding sleeve, a receding groove, a movable block, an extrusion spring, a guide rod, a guide hole, a connecting plate, a transverse plate, a limiting block, a linkage block, a connecting block, a movable plate and a connecting spring, the receding groove is formed in the movable plate, and the guide rod is sleeved with the extrusion spring; the guide rod is connected to one side of the movable block, the guide hole is formed in the connecting block, the transverse plate is installed on one side of the connecting plate, the limiting block is arranged on the outer side of the connecting pipe, and the connecting spring is connected with the two adjacent linkage blocks. The blowing and sucking machine solves the problem that a traditional blowing and sucking machine is unstable in air speed fixing and speed adjusting structure.