JPH04354508A - Mist catcher - Google Patents

Abstract

PURPOSE:To provide the mist catcher device by which noise at the time of operation is reduced, a freedom to fix it to a working device, etc., is increased, and simultaneously the maintenance is quite easily performed. CONSTITUTION:When a disk drum 7 is rotated by a motor 6, a sucking force is generated by means of the action of the blades 11 of a turbo-fan 10. By such a sucking force, oil mist is sucked from a sucking port 3 into the disk drum 7, and the oil mist is condensed into oil droplets through a rotary filter 12 and a condensation member 30. The oil droplets thus formed are scattered outward from the through holes 9 of an outer peripheral wall 8 by the centrifugal action of the disk drum 7 and discharged from a discharging port 25. The oil mist remaining in the disk drum 7 without being transformed to the oil droplets is discharged from an exhaust port 15 and removed by an adsorbent 20, and the cleaned air is discharged outside from a vent hole 24. The adsorbent 20 is replaced by removing only an adsorbent attaching body 16 from the body case 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mist removing device for removing oil mist, chemical mist, and the like that are harmful to the human body and are generated during machining, cleaning, heat treatment, etc. of machined parts.

0002

2. Description of the Related Art Conventionally, as mist removing devices of this type, there have been devices described in Japanese Utility Model Publications No. 58-11373 and Japanese Utility Model Publication No. 56-39539. Jitsukō 58-113
Publication No. 73 (hereinafter referred to as the former) discloses that oil-containing mist air is sucked into the casing from the suction port by coaxially rotating a sirocco fan and a rotary filter at high speed within the casing using a motor, and the oil-containing air is drawn into the casing by the rotary filter. The oil droplets are scattered toward the outer circumference by the centrifugal force generated by the high-speed rotation of the rotary filter, and are attached to two adsorption filters that are provided in the casing to form a ring-shaped space around the outer circumference of the rotary filter. An oil mist removing device is described which discharges formed oil droplets from an oil drain port and exhausts clean air from which oil mist has been removed from an exhaust port.

[0003] Furthermore, Japanese Utility Model Publication No. 56-39539 (hereinafter referred to as the latter) describes a device similar in configuration to the oil mist removing device described in the former. The oil droplets that are turned into oil droplets by the filter and scattered by the action of the centrifugal force are held by the main oil adsorbent layer made of polypropylene fibers provided around the outer circumference of the rotary filter, while being absorbed into the auxiliary oil. An oil mist removing device is described that is characterized by a structure in which oil mist is introduced into an adsorbent layer and discharged from an oil drain port.

0004

However, in both the former and latter oil mist removal devices, a sirocco fan is used as a fan for sucking oil-containing air into the device body. Such sirocco fans often do not have sufficient suction power due to the structure of the fan, so in order to obtain a large suction power, it was necessary to make the fan itself larger or to rotate the fan faster. .

However, in both the former and latter oil mist removal devices, the sirocco fan body is disposed inside the rotary filter, and there are restrictions on increasing the size of the fan itself. As a result, as the device becomes larger, its weight increases, which creates restrictions on installation, making it difficult to install, and also increases noise during operation.

[0006] Furthermore, in both the former and latter oil mist removal devices, a filter for adsorbing oil droplets formed by the rotating filter is installed inside the device body, and this makes it easier to maintain the device. When performing this, it is necessary to disassemble the entire device and replace the filter each time, which poses a problem in that maintenance work becomes extremely complicated.

It is an object of the present invention to provide a mist removal device that can increase the degree of freedom of attachment to processing equipment, etc. while reducing noise during operation by being smaller and lighter, and which can be extremely easily maintained. do.

[0008]

[Means for Solving the Problems] A mist removing device according to the present invention has been made to solve the above-mentioned conventional problems, and includes a suction port opened in a main body case, and a mist removal device built in the main body case. A suction fan that is rotated from outside the main body case via a motor and sucks mist-containing air into the main body case from the suction port as the fan rotates, and a condensing material that is rotated coaxially with the suction fan by the motor and condenses the mist. In the mist removing device, the suction fan is arranged on the outside of the condensing material. The fan has a plurality of blades arranged at a predetermined angle, and an adsorbent is removably attached to the main body case in communication with the exhaust port.

[0009]

[Operation] According to the mist removing device according to the present invention, when the fan is rotated by the rotational drive of the motor, oil mist etc. generated from the processing equipment etc. are sucked into the main body case of the removing device through the suction port. This oil mist is turned into oil droplets by a condensing material that rotates coaxially with the fan, and the formed oil droplets are scattered toward the inner peripheral wall of the main body case due to the centrifugal force generated as the condensing material rotates. and is finally discharged to the outside of the device from the discharge port. Also,
The air from which the oil mist has been removed passes through the adsorbent from the exhaust port, is further purified, and is then exhausted to the outside of the device.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a mist removing device according to the present invention will be explained in detail based on one embodiment with reference to the drawings. FIG. 1 is a partially cutaway side view for explaining the mist removing device. In FIG. 1, an opening 2 is provided on one side of the main body case 1 (on the left side in FIG. 1), and a suction cylinder 4 having an inlet port 3 is fixed to the main body case 1 in alignment with the opening 2.

Further, on the side opposite to the opening 2 of the main body case 1 (on the right side in FIG. 1), a motor 6 is disposed which is attached to the main body case 1 via a motor mounting plate 5. A disk drum 7 is fixed to a motor shaft (not shown) of the motor 6.

The disk drum 7 is made of punched metal made of a thin plate such as an iron plate with a large number of small holes. A passage hole 9 is provided through which the formed oil droplet passes.

Furthermore, as shown in FIGS. 2 and 3, the outer peripheral wall 8
Blades 11 constituting the turbo fan 10 are erected at a predetermined angle at regular intervals on the outside of the turbo fan 10 . On the other hand, a rotary filter 12 made of polypropylene fiber or the like is attached to the inside of the outer peripheral wall 8, and the rotary filter 12 is protected from the pressure of the coil spring 13 expanding outward from the compressed state. It is pressed to the inside of the

An opening 14 is provided on the side of the disk drum 7 opposite to the side fixed to the motor 6, and a portion of the suction cylinder 4 enters inside the disk drum 7 through this opening 14. It is being done.

Furthermore, an exhaust port 15 is provided at the top of the main body case 1.
An adsorbent mounting body 16 is removably attached to the main body case 1 with bolts 17 in communication with the exhaust port 15 . The adsorbent mounting body 16 is constituted by a cylindrical body in which an intake opening 18 is provided corresponding to the exhaust port 15 of the main body case 1, and an exhaust opening 19 is provided above.

The adsorbent mounting body 16 is filled with an adsorbent 20 made of a material such as polypropylene fiber, similar to the rotary filter 12. This adsorbent 20 is
This is for removing mist from the mist-containing air sucked in from the exhaust port 15 of the main body case 1 through the intake opening 18 to generate clean air.

Further, an exhaust pipe 22 having a flange portion 21 aligned with the exhaust opening 19 is fixed to the adsorbent mounting body 16 via the flange portion 21 . Corresponding to the exhaust opening 19, the exhaust pipe 22 is integrally formed with a small hole plate 23 having a large number of small ventilation holes 23A, and a ventilation port 24 is opened in the upper part.

Further, in the lower part of the main body case 1, oil droplets converted into oil droplets by the action of the rotary filter 12 etc. collide with the inner circumferential wall of the main body case 1 due to the centrifugal force generated as the motor 6 rotates. A discharge port 25 is provided for discharging the oil that has flowed down to the outside.

Note that 26 is a stand for fixing the mist removing device. Next, the operation of the mist removing device configured as described above will be explained.

When the motor 6 is driven to rotate, oil mist generated from a processing device or the like is introduced into the disk drum 7 from the suction port 3 of the suction cylinder 4 by the suction force generated by the rotation of the blades 11 of the turbo fan 10. At this time, a part (rear end) of the suction cylinder 4 is configured to enter into the disc drum 7 through the opening 14 of the disc drum 7.
Oil mist can be efficiently introduced into the disk drum 7.

[0021] Also, the blades 11 of the turbo fan 10
is a position away from the suction port 3, for example, the rotary filter 1
Since the oil mist is spaced outward from the main body case 1 and placed close to the outer peripheral inner wall of the main body case 1, the suction force of the oil mist can be significantly increased.

The oil mist introduced into the disk drum 7 grows on the inner wall surface of the punching metal and the surface of the rotary filter 12, forming oil droplets. The oil droplets thus formed gradually penetrate into the rotary filter 12 due to the action of centrifugal force generated by the rotation of the disk drum 7, and finally penetrate into the main body case 1 through the passage hole 9 of the outer peripheral wall 8. It scatters towards the inner wall and adheres to it.

The oil droplets adhering to the inner wall of the main body case 1 flow downward along the inner wall due to their own weight, and reach the outlet 2.
5 and is discharged to the outside. Further, the oil mist remaining in the disk drum 7 without being turned into oil droplets is carried into the adsorbent mounting body 16 through the exhaust port 15 and the intake opening 18 by the exhaust action of the turbo fan 10.

After the oil mist is removed by the adsorbent 20, clean air flows from the exhaust opening 19 to the vent 2.
4 to the outside of the mist removal device. When such mist removal operation is performed continuously, oil mist gradually accumulates in the adsorbent 20, so it is necessary to replace it at regular intervals.

[0025] In such a case, the fastening with the bolts 17 is released and only the adsorbent mounting body 16 is removed. Thereafter, by replacing the filter 20 with a new one and attaching the adsorbent mounting body 16 to the main body case 1 again, the mist removal operation can be resumed.

Next, a method of connecting the mist removing device according to this embodiment to a processing device will be explained. FIG. 4 is an explanatory diagram showing an example in which the suction pipe 4 of the mist removing device and the mist discharge duct 27 of a processing device etc. are connected and used. 4 into the mist removing device main body case 1, and the same mist removing action as described above is performed.

Further, FIGS. 5 and 6 both show examples in which the mist removal device is fixedly connected directly to the processing device 28 etc. with bolts etc., FIG. 5 shows a direct mounting method, and FIG.
indicates the flange mounting method. Since none of these methods uses a duct, it is possible to prevent oil and dust from accumulating in the duct and to remove mist efficiently. Further, FIG. 7 is an explanatory diagram showing a hood system in which mist generated from a processing device or the like is collected by a hood 29 and sucked into the mist removing device.

Next, another embodiment of the present invention will be described based on FIGS. 8 and 9. This other embodiment differs from the above embodiment only in that a condensation member that promotes condensation of mist is used instead of the rotary filter 12 in the above embodiment, and the other configurations are the same. , a detailed explanation thereof will be omitted.

FIG. 8 is an explanatory diagram showing an enlarged outer circumferential portion of the disk drum 7. In the figure, a dew condensing member 30 is installed inside the outer circumferential wall 8 of the disk drum 7 instead of the rotary filter 12. ing. The dew condensation member 30 is shown in FIGS. 9 to 11.
As shown in FIG.
It has a structure in which a plurality of sheets are combined with a liner 32 interposed between them.

Here, each dew condensation plate 31 has its corrugated portions not interlocking due to the presence of the liner 32.
A good gap is provided between each dew condensation plate 31. Note that when the dew condensation member 30 is used instead of the rotary filter 12 in this way, it can be fitted onto the peripheral edge of the disk drum 7 due to the elastic force in the plate thickness direction generated by combining the plurality of dew condensation plates 31. The coil spring 13 becomes unnecessary.

FIG. 9 is a perspective view schematically showing the dew condensing member 30, and the dew condensing member 30 is composed of dew condensing plates 31 and liners 32 stacked alternately. The dew condensation member 30 is fitted onto the peripheral edge of the disk drum 7. Here, as schematically shown in FIG. 10, the dew condensation plate 31 is composed of a thin circular plate having a corrugated shape in the radial direction from the central through hole 31A, and
As schematically shown in FIG. 11, the liner 32 is made of a flat disc having a through hole 32A to match the condensation plate 31.

The oil mist sucked into the disk drum 7 is condensed on the surface of each condensation plate 31 and liner 32 while traveling in the radial direction along the waveform of the condensation plate 31. The oil droplets formed by such dew condensation are further moved in the radial direction by the centrifugal force accompanying the rotation of the disk drum 7, and are scattered to the outside of the disk drum 7 through the passage hole 9 of the outer peripheral wall 8. Thereafter, the mist is removed by the same action as in the above embodiment.

As explained in detail above, in the mist removing device according to this embodiment, the blades 11 are installed upright on the outside of the outer peripheral wall 8 of the disk drum 7 instead of the conventional sirocco fan as the mist suction fan. Since the turbo fan 10 is adopted, the suction power of the mist can be greatly increased. As a result, the fan itself can be downsized, the entire device can be made smaller and lighter, and the degree of freedom in attaching it to a processing device or the like can be increased as shown in FIGS. 4 to 7.

Furthermore, since there is no need to unnecessarily increase the rotation speed of the fan, the noise during operation can be significantly reduced. Furthermore, in this embodiment, the adsorbent 20 is built into the adsorbent mounting body 16 that can be attached to and removed from the disk drum 7 from the outside, so when replacing the adsorbent 20, only the adsorbent mounting body 16 is removed. Adsorbent alone 20
can be exchanged. Therefore, unlike conventional devices, there is no need to disassemble the entire device each time the adsorbent is replaced, and maintenance work on the device can be performed extremely easily.

Furthermore, if the dew condensation member 30 is used instead of the rotary filter 12, the condensation of the oil mist can be promoted and the oil mist removal efficiency can be significantly improved. It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that various modifications and improvements can be made within the scope of the invention.

Furthermore, although this embodiment has been explained using an oil mist removing device as an example, it is clear that the device can also be used as a device for removing mist of other chemicals or the like that are harmful to the human body. Furthermore, in this embodiment, the adsorbent mounting body 16 is made removable from the main body case 1, but the adsorbent mounting body 16 is fixed to the main body case 1 and the exhaust pipe 22 is connected to the adsorbent mounting body 1.
The adsorbent material 2
Of course, when replacing the absorbent material 20, only the exhaust pipe 22 may be removed and the adsorbent material 20 may be replaced.

[0037]

As explained above, the present invention provides a mist removal device that is compact and lightweight, reduces noise during operation, increases the degree of freedom in mounting to processing equipment, etc., and allows for extremely easy maintenance. It is possible to provide the following information, and the effect on the industry is great.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a mist removal device.

FIG. 2 is a front view of the disk drum.

FIG. 3 is a side view of the disk drum.

FIG. 4 is an explanatory diagram showing a state in which a mist removing device and a processing device are connected via a duct.

FIG. 5 is an explanatory diagram showing a state in which a mist removing device and a processing device are directly connected.

FIG. 6 is an explanatory diagram showing a state in which a mist removing device and a processing device are connected via a flange.

FIG. 7 is an explanatory diagram showing a state in which a mist removing device and a processing device are connected via a hood.

FIG. 8 is an enlarged explanatory diagram showing a state in which a dew condensation plate is used as a dew condensation material.

FIG. 9 is a perspective view schematically showing a dew condensation member.

FIG. 10 is a perspective view schematically showing a dew condensation plate.

FIG. 11 is a perspective view schematically showing the liner.

[Explanation of symbols]

Claims (1)

[Claims] Claim 1: An intake port opened in the main body case, and an air inlet that is built into the main body case and is rotated from outside the main body case via a motor, and with the rotation, mist-containing air is drawn from the inlet into the main body case. A suction fan, a condensing material that is rotated coaxially with the suction fan by a motor and condenses mist, an exhaust port provided on the opposite side of the main case to the side where the inlet is opened, and an exhaust port provided in the main case. In the mist removal device equipped with an exhaust port, the suction fan is a fan having a plurality of blades arranged at a predetermined angle on the outside of the condensing material, and communicates with the exhaust port so that the adsorbent material is directed against the main body case. A mist removal device characterized in that it is detachably attached.