KR101790408B1

KR101790408B1 - Mist eliminator

Info

Publication number: KR101790408B1
Application number: KR1020150109962A
Authority: KR
Inventors: 양순용; 김용석
Original assignee: 울산대학교 산학협력단
Priority date: 2015-08-04
Filing date: 2015-08-04
Publication date: 2017-10-27
Also published as: KR20170017031A

Abstract

The present invention relates to a dust collecting apparatus comprising a first collecting body for collecting mist in a cylindrical shape having an inlet formed at one side thereof, an exhaust gas containing mist, flowing the exhaust along the inner circumferential surface of the body, And a second collecting body for collecting the mist contained in the exhaust through the mesh unit connected to the rotating shaft that rotates about the center axis and discharging the mist through the outlet formed at one side , The mist containing the mist is drawn in, the mist is primarily collected by using the cyclone effect and the condensation effect and the weight of the mist, and while the mist is secondarily collected by the element mesh unit, the element mesh unit and the collecting body The mist collecting device is provided.

Description

Mist eliminator

More particularly, the present invention relates to a mist collecting apparatus for collecting fine particles of water or oil floating during exhaust, and more particularly, to a mist collecting apparatus which draws mist containing mist, The present invention relates to a mist collecting apparatus for collecting a mist while collecting a mist by an element mesh unit and for automatically cleaning an element mesh unit and a collecting body as needed.

In general, a large amount of processing oil (cooling oil, cutting oil, aqueous detergent, oil detergent, etc.) is used for cooling, lubrication and cleaning in machining processes such as cutting, turning, grinding and cleaning of metals. And fine particles that are volatilized and scattered along with fine chips in the turning or grinding process and suspended in the air are referred to as mist.

Since the above mist is very fine, it is not easy to confirm whether or not the occurrence of the mist is caused. Therefore, the worker performing the metal processing is unconsciously exposed to the mist and the disease caused by various cancers, non-malignant respiratory diseases, skin diseases and microorganisms, But also causes malfunction and short circuit of the machinery and affects the product.

The conventional mist collecting apparatus is largely divided into a collecting apparatus of a filter system and a collecting apparatus of a rotary filter system.

The filter type collecting device has a good initial mist removal efficiency, but it can not be removed if the mist is adhered to the filter. As a result, the pressure loss (excessive clogging of the filter due to filter clogging, There is a problem that the overall efficiency of the ventilation system is lowered and the oil adhered to the filter is corroded together with the filter to generate odors in the workplace.

In order to solve the above problem, expensive filters have to be frequently replaced, resulting in excessive maintenance costs, continuity of work, and loss of workforce.

The rotary filter type collecting device adopts the inner filtration method, so that it can not be removed when the metal chip or the foreign substance adheres to the inside of the filter. The blowing fan is installed inside the collecting device and the positive pressure is formed at the rear end of the collecting device There is a problem that the condensed oil leaks through the gap of the duct line and the collecting method depends on the rotational force of the blowing fan, so that the rotational force (RPM) is not sufficient and the mist can not be removed sufficiently This causes a direct failure of the exhaust system.

In order to solve the above-mentioned problem, according to a conventional art, a bottom surface is formed in a conical shape in Patent Registration No. 10-0506985 (2005.08.01), a mist inlet is provided in the tangential direction of the outer side and a mist outlet is provided in the other side A filter support of a multi-mesh network equipped with a filter is inserted and installed inside the filter housing in which the filter check window is installed, the rotary shaft of the filter support is connected to the lower motor of the filter housing, and the filter housing has a conical shape The present invention provides a centrifugal mist collecting apparatus for an outer filtration type centrifugal mist capable of purifying mist generated during metal working by centrifugal force by coupling a housing and controlling the motor by an inverter.

In addition, the mist removal system by the vacuum system is more important than the general blower or fan system maintenance, because it is directly related to the failure of the vacuum pump and maintenance.

Therefore, the mist trapping by the vacuum system was disassembled directly from the mist collecting device periodically (1 to 2 times per week), and the mist film was dissolved in the solvent for a long time or reused after cleaning using an ultrasonic cleaner or the like.

As described above, the mist collecting apparatus using the conventional vacuum system has many problems such as a process idle time due to the maintenance of the element mesh unit for collecting mist, and a repair time due to frequent fixing of the vacuum pump.

The present invention is configured to primarily collect mist by using the cyclone effect of exhaust and the weight of mist, and to collect secondarily the mist by an element mesh unit, thereby reducing the load of the element mesh unit, An element mesh unit for collecting the mist while rotating in the body is automatically cleaned on the basis of the difference in the concentration of the mist contained in the exhaust gas discharged from the vehicle and the discharged exhaust gas so that the collecting efficiency of the element mesh unit is continuously maintained, It is possible to improve the trapping rate of the mist in accordance with the effect of exhaust condensation and to prevent the mist from being generated in the first stage The inside of the collected body is scraped off by the mist produced as it is collected. It is an object of the present invention to provide a mist collecting apparatus which is provided with a crapper to increase the recovery rate of mist, facilitate maintenance of the apparatus, and improve the durability of the apparatus.

The mist collecting apparatus according to the present invention includes a first collecting body for collecting mist and collecting the mist while flowing the exhaust along the inner circumferential surface of the body through an inlet formed in one side of the cylindrical body, An element mesh unit connected to an upper side of the first collecting body and connected to a rotating shaft which rotates about the center of the body, and a second collecting unit for collecting mist contained in the exhaust through an outlet formed at one side, 2 collecting body and a collecting body connected to the lower portion of the first collecting body by a connection pipe that is selectively opened to collect water and oil generated by the mist collected in the first collecting body and the second collecting body, And a cleaning agent is sprayed in the vicinity of the element mesh unit inside the second collecting body, Rest is arranged on the outer periphery of the washing water for washing the oil film formed on the surface of the nozzle unit, and the first absorption body, and further comprising a cooling means for cooling the exhaust gas flowing in the first absorption body.

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At this time, the cleaning water nozzle according to the present invention can control the injection timing by the difference in the concentration of mist in the exhaust gas drawn into the mist collecting device and the pressure difference between the exhaust gas discharged from the mist collecting device or the mist.

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In addition, the first collecting body according to the present invention may be formed in a conical shape so that the exhaust flowing in the first collecting body flows in a cyclone form.

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In addition, in the second collecting body according to the present invention, the oil film formed on the inner circumferential surface of the first collecting body is peeled off by the mist trapped by the rotation of the rotating shaft, A scraper may be provided.

At this time, a plurality of scrapers according to the present invention are radially connected by a support base with respect to a rotation axis provided in the center of the first collecting body, the support base includes a cylinder connected to the rotation shaft, A rod inserted into the cylinder and protruding and retreating along the cylinder; and a coil spring including therein the cylinder and the rod, and applying a resilient repulsive force to the scraper, so that the scraper is resilient by the coil spring And the length thereof can be expanded or contracted according to the inner diameter of the first collecting body.

The scraper according to the present invention further comprises a lifting and lowering guide member which includes a magnetic body to be magnetically attracted to the magnetic body and which is selectively lifted up and down along the longitudinal direction from the outside of the first collecting body, As the member selectively moves upward or downward, the scraper may be moved up and down along the longitudinal direction of the rotating shaft by being attracted by the magnetic force.

The mist collecting apparatus according to the present invention has the following effects.

First, the element mesh unit that collects the mist while rotating in the body is automatically cleaned on the basis of the pressure difference between the incoming exhaust gas and the discharged exhaust gas and the concentration of the mist contained in the discharged exhaust gas and the discharged exhaust gas, The collection efficiency of the mesh unit can be maintained constant, the generation of the oil film following the mist can be suppressed, the maintenance of the apparatus can be easily performed, and the durability of the apparatus can be improved.

Secondly, the mist is primarily collected by using the cyclone effect of the exhaust and the weight of the mist, and the mist is secondarily collected by the element mesh unit, thereby reducing the load of the element mesh unit.

Third, a cooling means for condensing the mist of the exhaust gas is provided outside the body where the mist is primarily collected, thereby improving the collection rate according to the exhaust condensation effect.

Fourthly, a scrapper for scraping off the oil film generated as the mist is trapped in the primary collecting body of the mist is provided to increase the recovery rate of the mist, facilitate the maintenance of the apparatus, and improve the durability of the apparatus .

Also, the collecting efficiency by the cyclone effect according to the present invention is effective in a vacuum drying process at a high temperature, and a relatively large particle mist is generated in the initial process by vacuum drying at a high temperature, and is discharged to a lump level. Thereby achieving a large performance.

1 is a perspective view of a mist collecting apparatus according to an embodiment of the present invention.
2 is a cross-sectional view of a mist collecting apparatus according to an embodiment of the present invention.
3 is a cross-sectional view of a mist collecting apparatus according to another embodiment of the present invention.
FIG. 4 is an exemplary view showing an embodiment of a mist collecting apparatus according to another embodiment of the present invention.
5 is a cross-sectional view of a mist collecting apparatus according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, at the time of the present application, It should be understood that variations can be made.

In the present invention, the mist containing the mist is drawn in, the mist is primarily collected by using the cyclone effect and the condensation effect and the weight of the mist, the mist is secondarily collected by the element mesh unit, The present invention relates to a mist collecting apparatus for automatically collecting a collected body, and will be described with reference to the drawings.

1 and 2, the mist collecting apparatus 1 according to the present invention includes a first collecting body 10 and a second collecting body 20, And an inlet 11 into which exhaust gas containing mist is drawn is formed at one side thereof.

At this time, the inlet 11 protrudes in a tubular shape, and a connecting flange is formed at an end of the inlet 11 so as to be fastened to the exhaust pipe.

The first collecting body 10 may be provided with a water level gauge 12 on the lower side of the first collecting body 10 to check the level of water and oil generated by the mist collecting. The collection body 30 is connected to the first collection body 10 through a connection pipe which is selectively opened to connect the first collection body 10 and the second collection body 10, And collects moisture and oil generated by the mist trapped in the body (20).

At this time, it is preferable that the water collecting body 30 also has a water level gauge 12 on its one side to check the level of water and oil generated by the trapping of the mist, Thereby forming a drain pipe that is selectively opened according to the present invention.

And an outflow member 13 for guiding and discharging the exhaust upward to the inside of the first collecting body 10 having an open upper part. The outflow member 13 is formed as an upper cone-shaped cone- And the exhaust is discharged to the upper portion through the lower portion in an open form.

At this time, it is preferable that the lowermost end of the outflow member 13 is located at a position lower than the height of the inlet 11 because the inlet / outlet exhaust gas flows through the inlet 11, But is drawn into the first collecting body 10 and then remains in the first collecting body 10 for a while to collect primary mist by convection or cyclone phenomenon.

Accordingly, the first collecting body 10 is formed at one side of the first collecting body 10, and the exhaust containing the mist is introduced through the inlet connected to the exhaust pipe of the outside, and the exhaust flows along the inner circumferential surface of the cylindrical body, The mist is first collected in the exhaust gas by its own weight, and then the exhaust gas flows upward.

At this time, the exhaust gas flowing out from the first collecting body (10) flows out to the second collecting body (20).

The second collecting body 20 is preferably formed in a cylindrical shape having the same diameter as that of the first collecting body 10 and is connected to the upper side of the first collecting body 10 so as to maintain airtightness.

In addition, the second collecting body 20 includes an element mesh unit 21 that rotates around a center axis, and includes an element mesh unit 21 rotating the exhaust flowing out from the first collecting body 10, And the mist is secondarily collected in the exhaust gas, and then the exhaust gas is discharged to the outside.

An outlet 22 is formed at one side of the second collecting body 20, and the outlet 22 is also protruded in a tubular shape, and a connecting flange is formed at an end of the outlet 22 so as to be fastened to the discharge pipe.

The rotary shaft is connected to the element mesh unit 21 so that the rotating shaft is rotatable perpendicular to the center of the second collecting body 20 and is mounted on the upper portion of the second collecting body 20 And is rotated by driving the electric motor 23 to apply a rotational force to the element mesh unit 21. As a result,

The exhaust gas flowing out from the first collecting body 10 is diffused into the second collecting body 20 by the rotation of the element mesh unit 21 rotating in the second collecting body 20 with the above- The mist that comes into contact with the element mesh unit 21 is collected by the element mesh unit 21 or the centrifugal force generated by the rotation of the element mesh unit 21 is transmitted to the outside through the outlet 22, Is collected on the inner circumferential surface of the second collecting body (20).

Here, the element mesh unit 21 can be formed with an oil film (produced by oil in the mist) on its surface even if the element mesh unit 21 is used for a short period of time, and the oil film sharply drops the collection efficiency of the element mesh unit 21.

In order to solve this problem, according to the present invention, a cleaning water nozzle 24 is disposed around the element mesh unit 21 provided in the second collecting body 20, and the detergent is applied to the element mesh unit 21 Spray.

When the cleaning agent is sprayed from the cleaning water nozzle 24, the oil film formed on the surface of the element mesh unit 21 is dissolved, and the surface of the element mesh unit 21 And is released from the element mesh unit 21 by the rotational force.

At this time, the cleaning agent may be sprayed from the cleaning water nozzle 24 at all times, but the present invention is not limited thereto. The cleaning agent may be injected into the apparatus through the inlet 11 and the exhaust gas discharged from the apparatus through the outlet 22 (21) so that the detergent is sprayed to the element mesh unit (21) based on the difference in mist concentration in the exhaust gas discharged from the apparatus through the outlet (22) You can control the viewpoint.

Although not shown in the drawings showing the implementation of the present invention so as to perform the above-described process, it is preferable that a pressure sensor for measuring the pressure of the exhaust gas and a concentration-measuring sensor for measuring the concentration of the mist in the exhaust are provided on the inlet and outlet sides of the apparatus Do.

3 and 4, the first collecting body 10 is formed in a conical shape, and the exhaust gas flowing inside the first collecting body 10 To flow in the form of a cyclone.

The exhaust gas flowing through the inlet 11 formed on one side of the first collecting body 10 flows into the first collecting body 10 through the inlet 11 formed in the first collecting body 10 when the exhaust flows in a cyclone form in the conical first collecting body 10, The exhaust flows downward while circularly moving, and the advancing direction changes at the lowermost part of the cone to rise toward the upper part, and the guide path exhaust of the outflow member 13 And is discharged to the second collecting body 20.

At this time, the relatively large particles contained in the exhaust gas and heavy mist are separated from the exhaust gas in the first collecting body 10 by the centrifugal force and flow downward through the inner wall surface of the first collecting body 10, The outflow member 13 for guiding the exhaust collected in the first collecting body 10 to the second collecting body 20 after the first mist collecting process is formed into a cylindrical shape having open top and bottom surfaces.

A cooling means 40 is disposed on the outer periphery of the first collecting body 10 to cool the exhaust flowing in the first collecting body 10.

In this case, the cooling means 40 includes a tube body through which refrigerant flows, and a first collecting body 10 in a coil shape surrounding the conical first collecting body 10 so as to surround the first collecting body 10 The mist is condensed as moisture and oil and is easily separated from the exhaust gas. The moisture and oil of the mist thus separated flows downward along the inner peripheral surface (inner wall) of the first collecting body 10 Falls and is accommodated.

An oil film may be formed on the inner circumferential surface (inner wall) of the first collecting body 10 as the oil falls down on the inner circumferential surface (inner wall) of the first collecting body 10, And a scraper 50 which rotates around the center axis of the body 10 and peels off the cohered oil film collected on the inner circumferential surface of the first collecting body 10.

Here, the plurality of scrapers 50 are preferably disposed radially with respect to a rotation axis to which a rotational force is applied, and the scrapers 50 may be connected to a supporter 51 that is flexible in the rotation axis to mitigate a driving shock.

The rotary shaft may be formed integrally with a rotary shaft that applies a rotary force to the element mesh unit 21. However, the rotary shaft may be integrally formed with a rotary shaft that applies a rotary force to the element mesh unit 21, 5, the outlet 22 may also be located at the upper portion of the second collecting body 20, as shown in FIG.

It is preferable that the supporting base 51 for supporting and supporting the scraper 50 on the rotating shaft is elongated or contracted according to the inner diameter of the first collecting body 10. In order to achieve the above function, 51 includes a cylinder and a rod which extends and retracts along the inner side of the cylinder and which is always in contact with the inner circumferential surface of the first collecting body 10 so that the scraper 50 always faces the inner circumferential surface of the first collecting body 10, And includes a coil spring included therein.

Accordingly, the scraper 50 always scrapes the oil and oil film coated on the inner circumferential surface of the first collecting body 10 while being always in contact with the inner circumferential surface of the first collecting body 10 by the elastic repulsive force of the coil spring, And the oil film are accommodated in the lower portion of the first collecting body 10 and can be dissolved by the washing water sprayed for washing the element mesh unit 21. [

The scrapers 50 can be moved up and down along the longitudinal direction of the first collecting body 10. The spiral grooves 50 are formed in the spiral grooves along the rotation axis of the scrapers 50, The scraper 50 may be moved up and down in the upward and downward directions along the circumferential direction of the scraper 50. The scraper 50 may include a magnetic body to be magnetically attracted to the scraper 50, (Not shown) selectively lifting up and down along the lower longitudinal direction. As the elevating guide member (not shown) selectively moves upward or downward, the scraper 50 is pulled by the magnetic force And can move up and down along the longitudinal direction of the rotary shaft.

When the scraper 50 is moved up and down by the rotation of the rotating shaft, the rotating direction of the rotating shaft is changed from the forward direction to the reverse direction, A limit switch (not shown) may be additionally provided.

Therefore, the upward and downward movements of the scraper 50 are not limited to those described above, and various methods such as variable length of the central rotation axis, up and down movements along the feed grooves, rotational flow, .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: mist collecting device 10: first collecting body
11: entrance 12: water gauge
13: effluent member 20: second collecting body
21: Element mesh unit 22: Outlet
23: Electric motor 24: Cleaning water nozzle
30: Collecting body 40: Cooling means
50: scraper 51: support

Claims

A first collecting body for introducing the mist including the mist through the inlet formed on one side in a cylindrical shape and collecting the mist first while flowing the exhaust along the inner circumferential surface of the body and for discharging the exhaust to the upper side; A second collecting body for collecting the mist contained in the exhaust gas through an outlet formed at one side of the mist collecting body, and a second collecting body for discharging the mist through an outlet formed at one side, And a collecting body connected to the lower portion of the collecting body through a connection pipe which is selectively opened to collect and collect moisture and oil generated by the mist collected in the first collecting body and the second collecting body,
A cleaning water nozzle for spraying a cleaning agent in the vicinity of the element mesh unit to clean the oil film formed on the surface of the element mesh unit with the injected cleaning agent; And
Further comprising cooling means disposed around the outside of the first collecting body for cooling the exhaust flowing in the first collecting body.

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The method according to claim 1,
The cleaning water nozzle
Wherein the spray timing is controlled by a pressure difference between the exhaust drawn into the mist collecting device and the exhaust discharged from the mist collecting device or a concentration difference of the mist in the exhaust.

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The method according to claim 1,
The first collecting body may be conical,
And the exhaust gas flowing in the first collecting body flows in a cyclone form.

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The method according to claim 1,
A mist provided with a scraper which is provided on a rotating shaft extending from the second collecting body to the inside of the first collecting body to peel off the oil film generated on the inner circumferential surface of the first collecting body by the mist trapped by the rotation of the rotating shaft, Collection device.

The method of claim 7,
The scraper
Wherein a plurality of the first and second collecting bodies are radially connected by a support base with respect to a rotation axis provided in the center of the first collecting body.

The method of claim 8,
The support
A cylinder connected to the rotation shaft;
A rod connected to the scraper on one side and a protruding and retracting rod inserted into the cylinder on the other side;
And a coil spring that includes the cylinder and the rod therein and applies an elastic repulsive force to the scraper so that the scraper is supported by the coil spring so as to be resilient so that the length of the scraper is changed according to the inner diameter of the first collecting body Mist collecting device newly built.

The method of claim 7,
The scraper
Includes a magnetic body that is attracted to magnetism,
And a lifting guide member selectively lifting up and down along the upper and lower longitudinal direction from the outside of the first collecting body. When the lifting guide member is selectively moved upward or downward, the scraper is pulled by the magnetic force, And moving up and down along the direction.