A BAG FILTER DEVICE FOR FILTERING OF CUTTING OIL

摘要

after filter element by a pressure differential between the internal pressure and atmospheric pressure determines the contamination of the filter element and configured separately By cleaning the filter element to drive the cleaning means, to enable semi-permanent use; ; are attached to form a space inside the filter element and the outer mesh basket, the space on top of the cover portion to configure and a body that is closed; And the supply pipe comprises a supply valve configured to supply the contaminated coolant to the lower center of the body to inside the filter element; In the bag filter apparatus for filtering coolant comprising a discharge pipe including a discharge valve so as to discharge the coolant is configured to filter at the lower side of the main body, ; The filter is configured on a side of the cover a differential pressure sensor detecting the pressure inside the element, and for outputting a differential pressure signal of the atmospheric pressure; In the center of the inside of the filter element in a state arranged in the vertical direction, through the center of the lid to the suction pipe is rotatably mounted inside the filter element and the suction pressure a foreign substance attached to the inside surface of the filter element by the difference in atmospheric pressure cleaning means for discharging through a discharge pipe which is formed by the drain valve; Rotation drive means for rotating at a constant speed by a driving force of the suction motor of the cleaning means; Provides the bag filter apparatus for filtering coolant, characterized by a controller for controlling the operation of the cleaning means and the rotation driving means according to the detection signal of the differential pressure sensor.