JPS63116719A - Oil mist remover - Google Patents

Abstract

PURPOSE:To remove oil mist having turned into oil drops by means of centrifugal force by passing the air containing oil mist through a rotating filter. CONSTITUTION:The air containing oil dust sucked from a suction line 2 into a casing 1 by a suction means 6 comes into a rotating filter 8 after passing through a filter component 12 for a pretreatment box 3. The air containing oil mist turns into air current in the centrifugal direction and is collided with the inner surface of the rotating filter 8 to turn oil mist into coarse grains, adsorbed and turned into oil drops. Then, by the centrifugal force of the rotating filter 8, said oil drops are flung away outward, moved along the inner wall of the casing 1 and gather together on an inclined bottom wall 29 to be collected from a drain pipe 15. After the air containing oil mist, having passed the rotation filter 8, is purified completely by filter boxes, 5, 17 and 21, the same is exhausted out of an exhaust vent 23.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for removing oil mist generated in factories using various machine tools.

[Conventional technology]

Conventionally, in this type of oil mist removal device, a rotary filter is installed in a cylindrical casing, and oil mist-containing air is sucked in from the suction passage, and the oil mist is deposited on the rotary filter by passing it through the rotary filter. The centrifugal force of the rotating filter causes the oil mist that has been turned into oil droplets to be blown toward the inner wall of the casing around the outer periphery of the rotating filter.

[Problem that the invention seeks to solve]

However, in the above-mentioned conventional oil mist removal device, since the casing has a cylindrical shape, the oil mist that adheres to the rotating filter and turns into oil droplets is directed toward the inner wall of the casing on the outer periphery of the rotating filter due to the centrifugal force of the rotating filter. It was blown away and recovered from the drain pipe that was sent to the bottom of the casing along the inner peripheral wall of the casing.
Air containing oil mist that is not removed even after passing through the rotating filter continues to circulate along the inner peripheral wall of the casing, and coarsening of the oil mist is hardly promoted.
Even when the oil mist is passed through the filter member again, almost no oil mist is adsorbed, resulting in a problem that the oil mist removal efficiency is poor.

[Means for solving problems]

This invention was made in order to solve the above-mentioned conventional problems, and its structure is prismatic and has a casing (
1) A rotary filter (8) is installed inside the rotary filter (8), which sucks oil mist-containing air from the suction path (2).
), the oil mist adheres to the rotating filter (8) and the oil mist, which is turned into oil droplets, is directed toward the inner circumferential wall of the casing (1) on the outer periphery of the rotating filter (8) by the centrifugal force of the rotating filter (8). It is assumed that it is made to fly.

[Effect]

As a result of the above measures, the air containing oil mist that is not removed even after passing through the rotary filter (8) becomes turbulent in the corners of the rectangular cylindrical casing (1) and is stirred, causing the oil mist to collide with each other and become coarse particles. development is promoted.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the drawings showing one embodiment.

(1) is a rectangular cylindrical casing, a suction passage (2) is provided at the front end, a pretreatment box (3) is provided between the casing (1) and this suction passage (2), and a pretreatment box (3) is provided at the rear end. A rear filter box (5) is provided through gold Y4 (4). Although the casing (1) has a rectangular cylindrical shape in this embodiment, it can be implemented as a triangular cylindrical shape, a triangular cylindrical shape, or any other suitable rectangular cylindrical shape as required.

(6) is a suction means provided inside the casing (1) facing the suction port (2). In this embodiment, a sirocco fan is used, and a motor (7) provided outside the casing (1) is used.
) is rotationally driven by the suction means (6).
It is a cylindrical rotating filter provided on the outer periphery of the drum, which is attached coaxially with the suction means (6), and has a structure in which the filter (8b) is arranged inside a rotating drum (8a) having porous holes.

A pre-treatment box (
3) has communication ports (9) and (10) provided on the suction path (2) side and the casing (1) side, respectively, and the inside thereof is filled with a multilayer filter member (11). and,
A wire mesh (13) having a pressing member (12) is attached to the communication port (10) on the side of the casing (1), and the area of this metal M4 (13) portion and the communication port on the side of the suction path (2) are The areas of (9) are made approximately the same.

The rear filter box (5) provided at the rear end of the casing (1) has a communication port (14) at the top, a drain pipe (15) at the bottom, and a filter member (16) inside. ) is filled. Above the rear filter box (5) is the upper filter box (17).
) is provided. This upper filter box (1
7) is provided with an exhaust port (18) at the top, the bottom is connected to the communication port (14) of the rear filter box (5), and a filter member (19) is provided inside where the inclined plate (19) is arranged. 20) is filled.

Further, above the upper filter box (17), a filter box (21) is mounted with an appropriate mounting member (2).
2), it is detachably provided. This filter box (21) is provided with an exhaust port (23) at the top and an exhaust port (23) of the upper filter box (17) at the bottom.
A communication port (24) is provided with the inclined plate (25).
The inside where is placed is filled with a filter member (26). In this embodiment, a single-stage filter box (21) is provided above the upper filter box (17), but if necessary, this filter box (21) may be arranged in multiple stages above the upper filter box (17). The oil mist removing device of the present invention configured as described above, which can be provided in a stacked manner, includes a suction means (6
) is sucked into the casing (1) from the suction path (2) through the pretreatment box (3).
), some of the oil mist leaks onto the filter member (11).
) is adsorbed and turned into oil droplets, which travels along the inclined bottom wall (27) of the pretreatment box (1), passes through the drain hole (28), travels down the inclined bottom wall (29) of the casing (1), and then flows through the wire mesh (4).
) is passed along the sloped bottom wall (30) of the rear filter box (5) and collected from the drain pipe (15).

The oil mist-containing air that has passed through the pre-treatment box (3) enters the rotating filter (8), becomes a centrifugal airflow, collides with the inner surface of the rotating filter (8), and becomes coarse particles, resulting in oil mist. is adsorbed and becomes oil droplets,
The particles are blown outward by the centrifugal force caused by the rotation of the rotary filter (8), travel along the inner wall of the casing (1), collect on the inclined bottom wall (29), travel along the inclined bottom wall (29), and pass through the wire mesh (4). It passes through the sloped bottom wall (30) of the rear filter box (5) and is collected from the drain pipe (15).

Furthermore, the oil mist-containing air that has passed through the rotary filter (8) becomes turbulent at the corners of the casing (1) and is stirred, causing the oil mist to collide with each other and become coarser.
, the upper filter box (17), and the filter box (21), and the oil mist that was not removed even after passing through the rotary filter (8) is filtered into the filter member (5) (17) (21) in each filter box (5), (17), and (21). 1
6) (20) Air is adsorbed by (26) and turned into oil droplets, while the air from which oil mist has been removed is discharged from the exhaust port (23). The oil mist that has turned into oil droplets is transmitted through the inclined plate (25) of the filter box (21), the inclined plate (19) of the upper filter box (17), and further along the inner peripheral surface of the rear filter box (5) to the drain pipe. (15
) [Effects of the Invention] Since the oil mist removal device of the present invention is configured as described above, the air containing oil mist that is not removed even after passing through the rotary filter is collected at the corner of the casing. Due to the turbulence and agitation, the oil mist collides with each other and becomes coarser, making it easier to adsorb to the filter component, and by passing it through the filter component again, the oil mist removal efficiency is greatly improved. .

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the oil mist removal device according to this invention. FIG. 2 is a sectional view taken along line A-A in FIG. 1. (1)...Casing (2)...Suction path (8)
...rotating filter

Claims (1)

[Claims] 1. A rotary filter (8) is installed in a rectangular cylindrical casing (1), and oil mist-containing air is absorbed from the suction path (2) and passed through the rotary filter (8). The oil is characterized in that the oil mist, which is formed by adhering oil mist to oil droplets, is blown off toward the inner peripheral wall of the casing (1) on the outer periphery of the rotary filter (8) by the centrifugal force of the rotary filter (8). Mist removal device.