Method and device for measuring autorotation speed of cement paste mixer

Abstract

The invention provides a method and a device for measuring the autorotation speed of a cement paste mixer. The method comprises a revolution speed measurement process of a revolution shaft, a relativeautorotation speed measurement process of an autorotation shaft and a calculation process of the autorotation speed of the cement paste mixer. The calculation process of the autorotation speed of thecement paste mixer comprises the step of subtracting the revolution speed of the revolution shaft from the measured autorotation speed of the autorotation shaft to obtain the autorotation speed of the cement paste mixer. The principle of relative motion is utilized, the autorotation speed of the cement paste stirrer is obtained by subtracting the revolution speed of the revolution shaft from theautorotation speed of the autorotation shaft, and the reduction ratio of the gear mechanism is determined without disassembling the cement paste mixer so that potential safety hazards caused by disassembling equipment are eliminated and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of measuring the rotational speed of a mixer, in particular to a method for measuring the rotational speed of a cement paste mixer and a rotational speed measuring device. Background technique [0002] Cement slurry mixer is the standard equipment for measuring the physical properties of cement. It mixes cement and water in a certain proportion and then stirs it into a uniform test slurry, which is used for determining the standard consistency of cement, setting time and making stability test blocks. , is one of the necessary and indispensable equipment for cement plants, construction units, relevant professional colleges and scientific research units, and is widely used in traffic engineering, construction engineering and other fields. [0003] The cement slurry mixer 100 is mainly composed of a two-speed motor, a transmission box, a main shaft, an eccentric seat, a stirring blade 101, a stirring pot, a bas...

AI Technical Summary

Problems solved by technology

According to investigations and literature inquiries, the revolution speed of the cement paste mixer can be measured with a speed measuring device such as a tachometer, but it is still blank in China to directly measure the rotation speed of the cement paste mixer by using a speed measuring device, and the rotation speed of the cement paste mixer It is the relative rotation speed of the mixing blade minus the revolution speed, wherein the direction of rotation and revolution is opposite, the revolution is counterclockwise, and the rotation is clockwise. The existing measurement method can only use the indirect method: the rotation speed of the cement slurry mixer adopts the revolution speed Converted with the reduction ratio of the gear mechanism, the revolution speed can be directly measured, but the reduction ratio of the gear mechanism needs to be obtained by disassembling the tested equipment. Such an indirect measurement method is not conducive to the safety of personnel and equipment, and is inefficient.

[0005] To sum up, the existing measurement methods have the following three problems: ① The indirect detection method of the rotation speed of the cement slurry mixer needs to disassemble and assemble the mixer, and the cement slurry mixer is generally powered by three-phase electricity, which has the risk of electric shock, and such an operation method is inconvenient , which is not conducive to the use and maintenance of equipment, and is not conducive to the safety of personnel; ② Due to the gap between the gear and the ring gear of the planetary gear, the rotation speed of the stirring blade calculated by using the revolution speed of the stirring blade and the reduction ratio of the gear mechanism is different from the actual There is a certain error in the rotation speed, and the gear will wear out as the use time increases, and the error may become larger and larger. In this case, the indirect detection method cannot find the change of the error; ③The indirect detection method of the rotation speed of the mixer works The efficiency is low, and the inspection workload of the cement paste mixer is relatively large every year, which requires a lot of manpower and material resources

Images