JPH09239220A - Oil mist removing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase filtering efficiency without requiring the notch of a filter and to achieve the enhancement of efficiency. SOLUTION: A vertical suction fan 3, an annular barrier plate 4 provided at the position covering the exhaust side of the suction fan 3 and an annular oil mist adsorbing member 5 provided so as to provide an interval outside the barrier plate 4 are concentrically arranged in a housing 2. An annular upper lid 20 enabling the insertion and extraction of the adsorbing member 5 is attached to the upper part of the housing 2. A wiring insertion pipe 21 to the drive motor positioned above the suction fan 3 is provided to the inside proper place of the lid 20 so as to pierce the housing 2 up and down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil mist removing device for removing the above oil mist from air containing oil mist (hereinafter referred to as treated air) generated from various devices such as a rolling mill and discharging it as clean air.

[0002]

2. Description of the Related Art A conventional oil mist removing device employs a method in which the treated air is directly blown onto a filter to be filtered.

[0003]

In this case, however, the oil mist adheres to the surface of the filter, and even if a thick filter is used, clogging occurs and it is difficult to maintain its effect for a long time. Therefore, there are problems that the filtration resistance is increased, the air volume is reduced, the efficiency is deteriorated, and the replacement is required at an early stage. Further, this conventional method has a problem that it requires a mounting location for both the suction fan and the filter. Therefore, it may be considered that the suction fan is of a vertical type and an annular filter is arranged so as to surround the periphery thereof. The outline is shown in FIG. In this oil mist removing device 50, a filter 52 is arranged so as to surround a vertical suction fan 51. These are housed in a housing (not shown). 5
3 is a suction hood, and M is a suction fan drive motor.

With the above structure, the processing air is sucked by the suction hood 5.
It is sucked from No. 3 and discharged outward through the filter 52 like an arrow. Then suction filter 5
When exchanging 2, the wiring 54 of the drive motor M of the fan 51 becomes an obstacle, and therefore the filter 52 is forced to have a special shape with a notch 55 in a part of the ring, which causes a problem in structure and installation. In view of these points, the present invention provides an oil mist removing device that can increase the filtration efficiency and can be used for a long period of time, simplify the structure of the suction filter, and improve its efficiency. To aim.

[0005]

A first aspect of the present invention for achieving the above object is to provide a vertical suction fan in a housing, an annular collision plate at a position covering the exhaust side of the suction fan, and the same. A ring-shaped oil mist suction member is arranged concentrically with a space, and a ring-shaped upper lid that allows the suction member to be inserted and removed is attached to the upper part of the casing, and a casing is placed inside the lid at appropriate locations. It is characterized in that a wiring insertion tube for the drive motor which is located above the suction fan and which penetrates the body vertically is attached.

The oil mist removing device of the present invention having the above-mentioned configuration includes the oil mist sucked by the suction fan by disposing the collision plate and the oil mist suction member at a position covering the exhaust side of the suction fan. The gas first collides with the collision plate, and the oil mist is attached and captured, aggregates, falls, and is discharged. Therefore, the primary oil mist is effectively collected in the treated air. Then, the treated air reaches the oil mist adsorbing member and reliably captures the oil mist. At this time, the drive motor wiring attached to the upper portion of the suction fan is inserted into the insertion tube and pulled out downward. Therefore, even if the suction member is annular, it can be removed by removing the upper lid attached to the upper portion of the housing. Easy to put on and take off.

According to a second aspect of the invention, the adsorbing member is composed of a primary filter, a main filter and a secondary filter having different compositions. The primary filter is composed of a filter for capturing coarse oil particles of oil mist, and the main filter. Is formed by laminating a plurality of fine unit filters in a cylindrical shape and a mesh or lath plate between each unit filter,
It is characterized by the provision of spacers such as punching metal.

In the above construction, the coarse oil particles are first captured by the primary filter, and then the fine oil particles are captured by the main filter. At this time, the main filter is formed by stacking the unit filters together, and by disposing spacers between the unit filters, the oil particles trapped and agglomerated by the unit filters fall along the spacers, and thus the oil droplets remain. This prevents the unit filter from being clogged.

A third aspect of the invention is characterized in that the suction fan is a radial blade of a straight blade.

In the above construction, the fan is a straight blade radial fan, so that the oil mist is repelled without adhering. Therefore, it is possible to prevent the occurrence of imbalance due to adhesion.

[0011]

FIG. 1 shows an embodiment of the present invention. The oil mist removing device 1 of the present invention includes a suction fan 3 at the center of a housing 2 and an annular collision plate 4 covering the exhaust side thereof.
Further, an annular oil mist adsorbing member 5 is provided on the outer side of the adsorbing fan 3 concentrically with the suction fan 3. Suction fan 3
Is a vertical type, a drive motor M is provided above, a bottomed suction hood 6 is attached below, a suction duct 7 is attached to a side surface of the suction hood 6, and a prefilter 8 is provided at an appropriate position. The blades 3a of the suction fan 3 are straight blade radial fans, and the suction hood 6 is attached so as to face the central portion of the suction fan 3 with its outlet narrowed.

The collision plate 4 is attached to the upper plate of the housing 2 by hanging it, and the free end of the lower end is opposed to the bottom plate 2a with a space therebetween.
A flow path for processing air is formed therebetween.

The adsorbing member 5 has a structure in which treated air is circulated from the inside to the outside, and the adsorbing member 5 includes an internal primary filter 10, an external main filter 11 and the outside thereof. The secondary filter 12 is provided at the position of 1. and these are placed on the tray 15. The primary filter 10 uses a coarse mesh, for example, an oil-resistant sponge filter, and the main filter 11 has a unit filter 11a made of a fine-grained oil-resistant polypropylene nonwoven fabric laminated in a cylindrical shape a plurality of times between the unit filters. Is formed by inserting a spacer 13 such as a mesh or lath plate or punching metal. Reference numeral 14 denotes a gap between the unit filters 11a. The primary filter 10 also serves to hold the inside of the main filter 11. The secondary filter 12 supports the outside of the main filter 11 and uses an oil-resistant sponge filter having a coarser mesh than the primary filter 10. In addition, the bottom plate 2 of the housing 2 in which the tray 15 is mounted
The drain discharge pipe 16 is attached to a. 17 is the case 2
And a reference numeral 18 denotes an exhaust hole attached to one side of the upper part of the housing.

Since the housing 2 allows the suction member 5 to be taken out and mounted, an annular upper lid 20 covering the suction member 5 is provided.
Is detachably attached. Reference numeral 21 denotes an insertion pipe of the wiring 22 for the drive motor. The insertion pipe 21 is attached to a proper position inside the attachment position of the upper lid 20, for example, outside the collision plate 4 so as to vertically penetrate the housing 2.

In the above structure, the processing air containing the oil mist sucked by the suction fan 3 is first adsorbed by the prefilter 8 to remove coarse oil particles, and then blown to the collision plate 4 by the blowing of the suction fan 3. At this time, some of the oil particles adhere to the blade 3a of the fan, but by making the blade a radial fan of a straight blade, the oil particles are discharged by centrifugal force without adhering.

The collision plate 4 is provided around the fan 3. The oil mist collides with the collision plate 4 and the direction of the air flow is changed to the opposite direction to the suction direction. Therefore, the fine oil particles in the oil mist adhere and grow with respect to the oil particles that have adhered and aggregated to the plate. Therefore, most of the oil mist in the treated air is removed by the collision with the collision plate 4, and the load on the adsorption filter can be reduced.

The processing air discharged from the collision plate 4 is introduced into the adsorption member 5. The oil mist is first captured by the primary filter 10, and the remaining oil mist is transferred to the main filter 11. In this main filter 11, a spacer 13 is inserted between the unit filters 11a and the unit filters, and the oil particles adhered and agglomerated to the unit filters 11a settle due to their own weight and are transmitted through the spacers 13 and fall onto the tray 15, It is discharged from the drain discharge pipe 16. When passing through the main filter 11, the oil mist in the treated air undergoes a coagulation action, and therefore the residual oil mist not captured by the main filter 11 uses the secondary filter 12 as a relatively coarse filter. Also, it is captured and falls down along this.

However, the suction member 5 cannot avoid being clogged and must be replaced at a predetermined time. In that case, by removing the upper lid 20, the suction member 5
Exchange. At this time, the wiring 22 of the drive motor M is inserted through the insertion tube 21 and is drawn out downward. Therefore, even if the suction member 5 is annular, it can be easily attached and detached.

[0019]

As described above, according to the present invention, the treated air is blown to the collision plate by the suction fan, so that most of the oil mist is removed.
The load on the adsorption member can be reduced, that is, its durability can be improved. Particularly, in the present invention, since the insertion tube of the wiring for the drive motor is provided inside the suction member, and the wiring is inserted into the suction member and pulled out downward, the suction member has an annular shape without a notch portion, The efficiency can be improved and the attachment / detachment can be performed without any trouble. Further, the adsorbing member captures the remaining oil mist in the main filter together with the capture by the primary filter, so that the load on the main filter is reduced. Moreover, since the main filter is arranged via a spacer for each unit filter, the oil particles captured by the unit filter aggregate and fall along the spacer, so that the unit filter has oil droplets even with a fine filter. It is possible to prevent clogging due to the residue of and to improve durability. Since the suction fan is a radial blade radial fan, even if oil mist is attached, it can be splashed off by centrifugal force, and there is no fear of imbalance due to attachment.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an oil mist removing device of the present invention.

FIG. 2 is a bottom view in which a part of FIG. 1 is a sectional view.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is an enlarged cross-sectional view of the suction member taken along line XX in FIG.

FIG. 5 is a schematic explanatory view showing an example of a conventional oil mist removing device.

[Explanation of symbols]

 1 Oil Mist Removal Device 2 Housing 3 Suction Fan 4 Collision Plate 5 Adsorption Filter 10 Primary Filter 11 Main Filter 12 Secondary Filter 13 Spacer 20 Upper Lid 21 Wiring Insert Pipe

Claims (3)

[Claims] 1. A vertical suction fan, a ring-shaped collision plate at a position covering an exhaust side of the suction fan, and a ring-shaped oil mist suction member spaced apart from the collision plate are concentric with each other. An annular upper lid that allows the suction member to be inserted and removed is attached to the upper part of the housing, and the housing is vertically penetrated into the lid at an appropriate position inside and above the suction fan. An oil mist removing device equipped with a wiring insertion tube. 2. The adsorbing member comprises a primary filter, a main filter and a secondary filter, each having a different composition,
The primary filter is composed of a filter for capturing coarse oil particles of oil mist, and the main filter is composed by laminating a plurality of fine unit filters, and a spacer is arranged between each unit filter. The oil mist removing device according to claim 1. 3. The oil mist removing device according to claim 1 or 2, wherein the suction fan is a radial fan having a straight blade.