Reverse flow type sand mixer capable of automatically adjusting extrusion force

Abstract

The invention relates to the technical field of sand mixers, and discloses a reverse flow type sand mixer capable of automatically adjusting extrusion force. The reverse flow type sand mixer comprises a box body, a bottom plate is arranged in the box body, a supporting rod is arranged above the bottom plate, a rotating frame is arranged in the supporting rod, and a one-way bearing block is arranged at the bottom of the rotating frame; and a bearing box is fixedly connected to the bottom of a limiting spring, current-conducting plates are arranged in the bearing box, metal balls are arranged on the opposite sides of the two current-conducting plates, linkage rods are fixedly connected to the tops of the current-conducting plates, ejector rods are rotationally connected to the two sides of an extrusion plate, ratchet wheels are rotationally connected to the bottoms of the ejector rods, and the bottom of the bearing box is rotationally connected with a shearing plate. According to the reverse flow type sand mixer capable of automatically adjusting the extrusion force, through cooperative use of a screw rod and the limiting spring, the extrusion force of the shearing plate on sand grains is automatically increased when the sand grains are crushed, and the sand mixing effect is facilitated.

Description

technical field [0001] The invention relates to the technical field of sand mixers, in particular to a countercurrent sand mixer capable of automatically adjusting extrusion force. Background technique [0002] The sand mixer is a device that uniformly mixes the components in the molding sand and effectively coats the binder on the surface of the sand grains. The sand mixer uses the relative movement of the grinding wheel and the grinding plate to crush the materials placed between them. It is an ideal equipment for producing unburned bricks, lime-sand bricks, cement bricks, refractory bricks, crushing and mixing fly ash, boiler slag, tailings slag and industrial waste slag as raw materials for brick making. [0003] In the existing counter-current sand mixer, the steering of the sand mixing chassis is opposite to that of the shear plate when in use, so as to obtain a speed difference, generate friction and shear force on the sand and gravel in between, and then achieve the ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a countercurrent sand mixer that can automatically adjust the extrusion force, which has the advantages of automatically increasing the extrusion force of the shear plate on the sand when the sand is broken, which is beneficial to sand mixing, etc. It solves the problem that the shearing force of the shear plate on the sand is reduced due to the reduction of the gap between the sand particles when the sand particles are mixed and broken, which is unfavorable for sand mixing.

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