Method and device for measuring acting force of solid particles on silo

Abstract

The invention discloses a method and device for measuring acting force of solid particles on a silo. The device comprises a silo supporting frame, the silo, a feeder, a discharging branch, a silo bottom positive pressure measurement device, a hopper wall tangential acting force measurement device and a hopper wall normal acting force measurement device. The silo is supported on the silo supporting frame, the silo bottom positive pressure measurement device is positioned at a bottom hopper opening of the silo, a hopper side wall at the bottom of the silo is provided with the discharging branch, the hopper wall tangential acting force measurement device and a hopper wall normal acting force measurement device form the other two hopper side walls at the bottom of the silo respectively, and a feeding outlet of the feeder is positioned above the silo. The device is simple in structure, low in production and manufacturing cost, reliable in measurement result and practically applicable to silo design to improve design accuracy.

Description

technical field [0001] The invention specifically relates to a device and method for measuring the positive pressure of solid particle materials on the bottom of a silo and the force of a funnel wall. Background technique [0002] When the solid particle material silo is loading, storing and unloading, the force of the material on the bottom of the silo and the wall of the funnel is a key step in the design of the silo and the strength check of the silo. The calculation results of the force If it is too large, it will lead to waste of materials used in silo manufacturing and increase the cost. If the calculation result is too small, it will reduce the safety of the silo, cause the silo to have plastic deformation or even damage and collapse, and cause the loss of life and property of the country and people. There are certain defects in the calculation method currently used in engineering practice, including that the correction coefficient introduced in the formula is a const...

AI Technical Summary

Problems solved by technology

[0002] When the solid particle material silo is loading, storing and unloading, the force of the material on the bottom of the silo and the wall of the funnel is a key step in the design of the silo and the strength check of the silo. The calculation results of the force If it is too large, it will lead to waste of materials used in silo manufacturing and increase the cost. If the calculation result is too small, it will reduce the safety of the silo, cause plastic deformation of the silo or even collapse accidents, and cause the loss of life and property of the country and people.

There are certain defects in the calculation method currently used in engineering practice, including that the correction coefficient introduced in the formula is a constant, but in actual conditions, the correction coefficient needs to change with the height of the storage material; the material movement during loading and unloading is not considered. In the working condition of impact, only the force of the material when it is at rest, that is, when it is stored, is calculated, which leads to inaccurate calculation results, limited application range of the method, reduces the accuracy of silo design, and increases the cost and cost of silo manufacturing. Risk of accidents during use

Images