Sander for concrete powder

Abstract

The invention relates to a grinding device, in particular to a grinder for concrete powder, including a bracket. A motor is arranged on the bracket. A grinding piece is fixedly connected with a rotating shaft of the motor. A test sample holding device is arranged opposite to the grinding piece. The holding device includes a holding clamp and a driving mechanism. The holding clamp includes a holding clamp support. One side of the holding clamp support is provided with a guide rail support, and the other side of the holding clamp support is provided with a fixing clamp. A movable clamp is arranged at a position opposite to the fixing clamp. The movable is connected to a holding clamp handle. The driving mechanism includes a base provided with a guide rail and a first manual rocking handle. The first manual rocking handle is connected to the holding clamp support through a first driving screw rod. The grinding piece, the holding clamp and the driving mechanism are all arranged in a closed tank body. A motor fixing support is arranged below the motor and is provided with through holes. A second driving screw rod is connected to a second manual rocking handle through the through holes. The second manual rocking handle is rotated to drive the motor to slide. The grinding device has the advantages of convenient operation, and higher precision of the prepared sample powder.

Description

technical field [0001] The invention relates to a grinding device, in particular to a grinding machine with a container for crushed materials. Background technique [0002] Concrete is the most commonly used building material in modern human production and life. As a multi-phase heterogeneous material, it has a porous structure from a microscopic point of view, and media such as water, air, and ions penetrate into concrete through these pores. Although the durability of concrete includes many contents, and these contents are affected by many factors, and the mechanism of action is complicated, but the common point is that they are all related to the mass transfer capacity of concrete. Most of the corrosion of concrete materials occurs under the condition of intrusion of water and harmful ions, and the durability of concrete is closely related to its permeability. It is generally believed that the lower the permeability of concrete, the more difficult it is for water and cor...

AI Technical Summary

Problems solved by technology

[0004] The existing technology generally adopts the method of crushing the concrete and then grinding it. The efficiency of the grinding method is very low, and the powder cannot be accurately prepared layer by layer from the surface of the concrete.

There are also mechanical grinding, such as the Chinese patent disclosed on March 12, 2008, the publication number is CN101138745A, which discloses a high-end turbulent vibration grinding machine, its rotating drive motor is connected with a geared motor, and the geared machine is coupled with a universal drive The drive sprocket is connected to the universal transmission coupling, the drive chain is provided on the drive sprocket, the drive chain is connected with the drive sprocket, the drive sprocket is connected to the hollow shaft, the hollow shaft is connected to the bearing seat, and the bearing The seat is erected on the support, and the hollow shaft is also connected with a rotating cylinder. The rotating cylinder is provided with a manhole, and the machine frame is arranged on the support platform. Driven by a coupling and an exciting motor, this device can grind and refine materials, but its structure is complex, its cost is high, and its grinding accuracy is not high

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