Device for driving scraper rotating gear

Abstract

The invention discloses a device for driving a scraper rotating gear capable of making a scraper and a filter screen elastically contacted. The device comprises a box body, wherein a rack case which is communicated with the box body is arranged on the box body; the scraper rotating gear is movably arranged in the box body; and a rack which is engaged with the scraper rotating gear is arranged inside the rack case. A limit regulating mechanism is inserted in one side of the rack case; a driving cylinder is arranged on the other side of the rack case; a spring cavity is formed on an end face atone end of the rack; a spring and a spring seat are arranged inside the spring cavity from the interior to the exterior; a guide post is arranged on the spring seat; the spring is sleeved on the guide post; an end cover is arranged at an edge opening of the spring cavity; and a piston rod of the driving cylinder passes through a through hole which is formed on the end cover to be connected with the spring seat. Because the driving cylinder does not push the rack directly but indirectly pushes the rack through the spring, resistance is generated when the scraper presses the filter screen, and the rack cannot move although the piston rod moves forwards. Therefore, the scraper cannot scrape the filter screen.

Description

technical field [0001] The invention relates to a centrifuge, in particular to a driving device for a scraper rotating gear used to drive the scraper to rotate in the centrifuge. Background technique [0002] As we all know, many centrifuges are equipped with a scraper device to scrape off the filter cake on the filter screen. The scraper device includes a scraper, a scraper rotating gear and a driving device for driving the scraper to rotate. The current driving device of the scraper rotating gear includes: a box body, a rack box communicating with it is provided on the box body, a scraper rotating gear is movable in the box body, and a rack box is provided in the rack box to mesh with the scraper rotating gear. The rack on one side of the rack box is equipped with a limit adjustment mechanism matched with the rack, and the other side of the rack box is also equipped with a drive cylinder, and the piston rod of the drive cylinder is set There is a rack which meshes with t...

AI Technical Summary

Problems solved by technology

In the actual use process, due to the vibration of the centrifuge, the precision of the scraper shaft and the filter screen, etc., the scraper often breaks the filter screen.

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