JPH0537314U - Oil mist collector - Google Patents

Abstract

(57) [Abstract] [Purpose] A non-woven secondary filter 1 having a large lipophilicity was attached to the inside of each of the front surface and the circumferential surface of the cylindrical rotary porous plate 10, and the wire mesh primary filter 2 was filtered. While attaching the oil mist to the secondary filter 1, the condensed oil mist becomes oil droplets, the secondary filter 1 rotates together with the cylindrical rotary perforated plate 10, and is separated into oil droplets and clean air by centrifugal force, An oil mist collector for the purpose of ensuring a sufficient filtration area of the secondary filter 1 and preventing the reduction of the intake air volume. [Structure] Cylindrical rotation in which a primary filter 2 made of wire mesh and a non-woven secondary filter 1 having high lipophilicity which is driven by an electric motor 8 are attached between the rear surface of the suction duct and the front surface of the rectification box. An oil mist collector comprising a perforated plate 10, an outer peripheral wall of the flow control chamber 3, and a suction mat 5 stretched between the cylindrical rotary perforated plate 10 and an intake fan 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a collector for the oil mist generated by the cutting oil or the grinding oil used during machining, which generates heat due to cutting heat or grinding heat. Type oil mist collector.

[0002]

[Prior Art]

 Conventionally, as this type of filter type oil mist collector, a filter frame is packed with a filter medium, or a filter material that fills the packed bed with the filter medium and collects the oil mist inside the filter medium. Known is an internal filtration method in which the filter material is stationary and a method in which a filter material is attached or filled on the inner surface of a perforated rotary drum to give a rotary motion to the filter material.

[0003]

[Problems to be solved by the device]

 Among those described in the prior art, the oil mist that is sucked by a fan or blower, flows through the duct, and is sucked into the collector, in the former case, since the filter medium is a static fixed type, Since the mist collides with the filter medium, adheres and condenses to form oil droplets that drip on the surface of the filter medium or inside the filter medium, the filtration area of the filter medium is reduced and pressure loss is increased. There was a problem that the suctioned air volume was reduced, and the treated air volume was significantly reduced.

In the latter case, the filter material is filled or stuck to the inner surface of the perforated rotary drum, the oil mist is sucked into the perforated rotary drum, and the oil mist is rotated. When the oil mist is made to collide with the filter material from the inner surface and condenses into the filter material and becomes oil droplets, the oil component and the clean air are separated by the centrifugal force due to the rotation of the perforated rotary drum. , The oil mist that has not been filtered by the filter material just before being separated into oil and clean air is sucked in by the suction fan, so the oil becomes atomized or oil film or oil drops stick to the fan. However, there is a problem that the suction efficiency is lowered.

The present invention has been made in view of such problems of the conventional technology, and its purpose is to reduce the filtration area without increasing the pressure loss and to increase the treated air volume. It is an object of the present invention to provide an oil mist collector in which the oil content is not atomized and the oil film and oil droplets do not stick to the oil mist suction fan.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the oil mist collector according to the present invention comprises a wire mesh primary filter fixed between the rear surface of the suction duct and the front surface of the rectifying box, and a non-woven cloth filter on the inner surface of each of the front surface and the outer peripheral wall surface. Consists of a cylindrical rotary perforated plate on which the next filter is attached, an adsorption mat stretched between the outer peripheral wall of the cylindrical rotary perforated plate and the outer peripheral wall of the rectification box, a drain pan at the lower end of the rectification box, an intake fan, and an electric motor. Then, by rotating the non-woven fabric secondary filter attached to the inner surface of the cylindrical rotary porous plate, the oil droplets condensed and attached to the non-woven fabric secondary filter are separated from the clean air.

[0007]

[Action]

 The primary filter and the secondary filter remove the oil component of the oil mist sucked into the rectification box, and thus prevent the oil film from adhering to the suction fan. Also, since the secondary filter is rotating, the oil droplets attached to the secondary filter and condensed are separated into oil and clean air by centrifugal force.

[0008]

【Example】

 Examples will be described with reference to the drawings.

In FIG. 1, a rectifying chamber 3 is equipped with a cylindrical rotary porous plate 10 driven by an electric motor 8, and the front wall and the circumferential wall of the cylindrical rotary porous plate 10 have inner surfaces. Is a non-woven secondary filter 1 having a high lipophilicity.

Then, between the outer peripheral wall of the cylindrical rotary porous plate 10 and the outer peripheral wall of the rectifying chamber 3 having a cylindrical shape, a non-woven adsorption mat 5 is stretched in a cylindrical shape.

A primary filter 2 made of wire mesh is installed at a connecting portion between the rear surface of the oil mist suction duct 9 and the front surface of the flow regulating chamber 3.

A suction fan 6 driven by the electric motor 8 is provided in the fan casing 7 between the rear surface of the rectifying chamber 3 and the electric motor 8.

The oil mist flowing through the suction duct 9 and adhering to the wire mesh primary filter 2 and the non-woven fabric secondary filter 1 having high lipophilicity is condensed into oil droplets and centrifugally separated and adsorbed on the adsorption mat 5. It is filtered and dropped in the drain pan 4.

The filtered clean air is exhausted from the flange 11 on the upper surface of the fan casing 7.

[0015]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. The oil mist sucked into the rectifying chamber adheres to the non-woven fabric secondary filter with high lipophilicity that is attached to the inner surface of the cylindrical rotary porous plate, and is separated from the non-woven fabric secondary filter by centrifugal force to remove oil content. It is separated into clean air and clean air, the filtration area of the non-woven secondary filter is secured, suction pressure loss is not increased, suction air volume is not decreased, and the flow direction of oil and clean air is changed to increase Ensure collection efficiency.

[Brief description of drawings]

FIG. 1 is a schematic front sectional view of an oil mist collector according to an embodiment of the present invention.

[Explanation of symbols]

 1 Secondary Filter Made of Nonwoven Fabric 2 Primary Filter Made of Wire Mesh 3 Rectifying Chamber 4 Drain Pan 5 Adsorption Mat 6 Intake Fan 7 Fan Casing 8 Electric Motor 9 Intake Duct 10 Cylindrical Rotating Perforated Plate 11 Flange

Claims (1)

[Scope of utility model registration request] 1. A collector for an oil mist, comprising a wire mesh primary filter fixed between a rear surface of a suction duct and a front surface of a rectifying box, and a non-woven secondary cloth having high lipophilicity on each of the inner surface of the front surface and the outer peripheral wall surface. A cylindrical rotary perforated plate on which a filter is attached, an adsorption mat stretched between the outer peripheral wall of the cylindrical rotary perforated plate and the outer peripheral wall of the rectification box, a drain pan at the lower end of the rectification box, an intake fan and an electric motor. By rotating the non-woven fabric secondary filter attached to the inner surface of the rotary rotary plate, it is possible to separate oil droplets condensed and adhered to the non-woven fabric secondary filter from clean air to collect oil. Characteristic oil mist collector.