Gravity loading mechanism of high pressure extrusion mill

Abstract

The invention discloses a gravity loading mechanism of a high pressure extrusion mill. The gravity loading mechanism comprises a heavy loading block, a wire rope connected with the heavy loading block, a bracket used for supporting the wire rope to suspend the heavy loading block, and a buffering device arranged on the top of the bracket, wherein the wire rope bypasses the buffering device to buffer the height change of the heavy loading block caused by retreat of the a buffering roller. The integral function of the gravity loading mechanism of high pressure extrusion mill disclosed by the invention is similar to that of a hydraulic loading mechanism of a high pressure double-roller extrusion mill in the prior art, however, the integral system damp of the gravity loading mechanism provided by the invention is smaller than that of the hydraulic loading mechanism, so that the response speed can be greatly improved.

Description

technical field [0001] The invention relates to a gravity loading mechanism of a high-pressure extrusion mill, belonging to the technical field of high-pressure crushing equipment. Background technique [0002] The high-pressure double-roll mill increases the pressure between the two rollers of the common double-roll mill from less than 10 MPa to 50-300 MPa, and can instantly roll the material into a powder cake and apply a little External force, powder cake will become powder. Because the material passes through the working space of the roller press wheel very smoothly, without impact, and the noise is very low, so the crushing efficiency of the high-pressure roller press mill is very high. However, the high pressure and the inhomogeneity of the crushed material will cause the movable roller to retreat at a large acceleration, resulting in a very large impact load, causing strong horizontal vibration and torsional vibration of the main shaft. Therefore, compared with ordi...

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Problems solved by technology

However, the high pressure and the inhomogeneity of the crushed material will cause the movable roller to retreat at a large acceleration, resulting in a very large impact load, causing strong horizontal vibration and torsional vibration of the main shaft

Therefore, compared with ordinary roller press mills, the problems involved in high-pressure roller mills are much more complicated, whether it is the structure of the machine, transmission components, or mechanical properties.

[0003] In the prior art, the high-pressure counter-roll mill adopts hydraulic loading to realize the high pressure between the two rollers of the counter-roll mill. Although the structure is compact, the response speed cannot keep up with

The material of high-pressure roller grinding is inevitably uneven. If the roller cannot change the gap and stabilize the pressure between the rollers by moving forward and backward according to the change of the uniformity of the feeding within milliseconds, then the machine will frequently Overload, frequent failure or even early damage; and the hydraulic loading device has irreversible system damping, and the time required from sending a letter to the action of the cylinder is less than milliseconds

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