Powder weighing device for mixing station and mixing station

Abstract

The invention discloses a powder weighing device for a mixing station and the mixing station. The powder weighing device comprises a connecting rod (3), a supporting plate (4) and a cantilever beam sensor (5), wherein the supporting plate is connected with a weighing hopper of the mixing station and is connected to one end of the cantilever beam sensor through the connecting rod which is vertically arranged; the other end of the cantilever beam sensor is fixed on a mixing station installation frame (2); end spherical surfaces (31) are respectively formed at two ends of the connecting rod; connecting rod containing cavities (11) which are opposite to each other are respectively formed in the upper surface of the cantilever beam sensor and the bottom of the supporting plate; a spherical wall surface (10) is formed in each connecting rod containing cavity and is in spherical connection with the corresponding end spherical surface of the connecting rod. Therefore, even if the connecting rod slightly tilts, a stressed point, applied to the cantilever beam sensor, of the connecting rod remains at the lowest point of the spherical wall surface of each connecting rod containing cavity, can not be fundamentally changed and can be uniformly stressed, so that the powder weighing device has a stable weighing function and is high in accuracy.

Description

technical field [0001] The invention relates to a mixing station, in particular to a powder weighing device used on the mixing station and a mixing station with the powder weighing device. Background technique [0002] In the powder weighing of concrete mixing plants, cantilever beam sensors are generally used as weighing elements at present. Its working principle is based on the elastic deformation of the elastic body under the action of external force, so that the resistance strain gauge pasted on its surface also produces corresponding deformation. , so that the resistance value of the resistance strain gauge increases or decreases, and then the change of resistance is converted into an electrical signal such as voltage or current through the corresponding measurement circuit, and an electrical signal proportional to the load-bearing capacity of the cantilever beam sensor is output. The detection and conversion of the controller, so as to achieve the purpose of measuring ...

AI Technical Summary

Problems solved by technology

In this way, it is difficult for the connecting rod 3 to maintain an ideal vertical state during the working process, and it is inevitable to incline when the force produces deviation or vibration.

Once tilted, the force point acting on the cantilever beam sensor 5 will change, resulting in changes in the bending deformation of the cantilever beam sensor 5, resulting in weighing errors

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