KR20160141320A

KR20160141320A - Oil mist collecting device

Info

Publication number: KR20160141320A
Application number: KR1020150076695A
Authority: KR
Inventors: 윤홍범
Original assignee: (주)와이에이치비; 주식회사 와이에이치비에코
Priority date: 2015-05-29
Filing date: 2015-05-29
Publication date: 2016-12-08
Also published as: KR101753124B1

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an oil mist dust collector, and more particularly, to an oil mist dust collector for collecting and filtering oil mist generated during a work using a machine tool such as a CNC lathe or a grinder.
The oil mist dust collector according to the present invention includes a main body having an inflow space for allowing outside air to flow therein and having an inlet and an exhaust port communicating with the inflow space on both sides thereof, And a suction portion for generating a suction force for allowing the outside air to flow into the main body through the suction port; and a suction portion for sucking the outside air into the main body through the suction port, A filter unit installed between the main body and the inner cylinder for filtering the oil mist contained in the air introduced into the main body and a cleaning unit installed in the main body and spraying coolant into the main body for cleaning the filter unit.

Description

Oil mist collecting device

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an oil mist dust collector, and more particularly, to an oil mist dust collector for collecting and filtering oil mist generated during a work using a machine tool such as a CNC lathe or a grinder.

Generally, when machining a metal material by using a machine tool such as a lathe or a milling machine, cutting oil is supplied to a portion cut by a cutting tool or the like. The cutting oil reduces the frictional resistance, decreases the cutting point temperature, Thereby extending the service life of the tool and improving the accuracy of machining.

However, when cutting a metal material rotating at high speed in a machine tool by a cutting tool such as a cutting tool, the cutting oil supplied to the cutting part is scattered in a state of fine particles such as mist due to the high rotational force of the metal material. The oil mist in the mist state scattered in such a manner as described above is extremely harmful to the human body because dust and metal powder are contained therein. Therefore, a device for suppressing the generation of oil mist when cutting a metal material using a machine tool A dust collector for sucking and treating the oil mist has been proposed in Japanese Patent No. 10-0564297.

The dust collector includes an impeller driven by a motor to radially discharge the inhaled air, and an impeller disposed adjacent to the outer periphery of the impeller and impacted by the air discharged from the impeller, Centrifugal force applying means for separating the air primarily separated by the impact plate into heavy air containing oil and light air containing no oil by centrifugal force and centrifugal force applying means for separating the heavy air separated by the centrifugal force applying means And a screen strainer for separating the oil from the air.

However, when the dust collector sucks the air by rotating the impeller by using the power of the motor, the oil mist sucked together with the sucked air is filtered using a plurality of filters to improve the dust collecting efficiency It is necessary to replace the filter in a periodical manner, which causes a relatively large maintenance cost.

Korean Patent No. 10-0564297: Oil mist dust collector

It is an object of the present invention to provide an oil mist precipitator having an impeller provided in a main body and a cleaning part for spraying coolant to clean the filter part.

To achieve the above object, according to the present invention, there is provided an oil mist dust collector comprising: a main body having an inlet space for allowing outside air to flow therein, an inlet and an outlet communicating with the inlet space on both sides; An inner passage formed inside the main body so as to be spaced apart from an inner surface of the main body, the inflow space being located outside, and a hollow portion communicating with the inflow space; A suction unit for generating a suction force for allowing the outside air to flow into the main body through the suction port; A filter unit installed between the main body and the inner cylinder to filter oil mist contained in the air introduced into the main body; And a cleaning unit installed in the main body and spraying coolant into the main body to clean the filter unit.

The filter unit is formed such that the first unit filter module and the second unit filter module surround the outer surface of the inner tube with the inner tube interposed therebetween.

The first and second unit filter modules are configured to surround the outer surface of the inner cylinder and include a cartridge capable of passing air from one side to the other side of the cartridge and an oil mist contained in the cartridge and filtering the foreign substances contained in the air, Member.

The cartridge includes a first plate portion formed to be curved to contact the outer surface of the inner cylinder, a second plate portion formed to be curved to contact the inner surface of the body, and a second plate portion coupled to the front surface of the first and second plate portions. And a second perforated network coupled to a rear surface of the first and second plate portions.

Wherein the first and second perforation networks are provided with a plurality of vent slits formed in an inclined manner, wherein the vent slits are formed of a first group having a long hole structure elongated in a first oblique direction and a plurality of which are arranged in a line, And a second group formed of a long hole structure elongated in a second diagonal direction intersecting with the first group and arranged in a line and adjacent to the first group.

The cleaning unit is provided inside the main body and has an injection nozzle having an injection hole at an end thereof for injecting the cutting oil, and a coolant supply unit connected to the injection nozzle and supplying the coolant to the injection nozzle.

As described above, according to the present invention, since the impeller and the filter unit are periodically cleaned by the cutting oil sprayed from the cleaning unit, there is an advantage that the cost and manpower required for maintenance and repair of the apparatus can be saved.

Further, since the filter unit is divided into two unit filter modules, the present invention is easy to install and maintain.

FIG. 1 is a perspective view of a work box provided with an oil mist dust collector according to an embodiment of the present invention, FIG.
Fig. 2 is a partially cutaway perspective view of the oil mist dust collector of Fig. 1,
3 is a cross-sectional view of the oil mist dust collector of FIG. 1,
FIG. 4 is an exploded perspective view illustrating the filter unit applied to FIG. 1. FIG.

Hereinafter, an oil mist dust collector according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4, an oil mist dust collector 100 according to an embodiment of the present invention includes a machine tool such as a CNC lathe or a grinding machine installed therein to perform an inner work space And is installed in the working box 15 to suck air in the working box 15. When a metallic material rotating at a high speed in a machine tool is cut by a bite or the like, the cutting oil supplied to the cutting portion is scattered in a four-way manner due to the high rotational force of the metal material, such as mist. The oil mist precipitator 100 sucks and filters the oil mist to be scattered.

The oil mist dust collector 100 of the present invention is provided with an inflow space 211 for allowing the oil mist to flow therein and has an air inlet 221 and an air outlet 231 communicating with the inflow space 211 on both sides thereof An inner cylinder 340 installed inside the main body 100 so as to be separated from the inner side of the main body 100 and an inner cylinder 340 for allowing the air in the operation box 15 to be introduced into the inner cylinder from the inside of the main body 100 A filter unit 400 installed in the main body 200 for filtering the oil mist contained in the air introduced into the main body 200 and a filter unit 400 for filtering the oil mist contained in the main body 200, And a cleaning unit 500 for spraying a coolant into the main body 200 to clean the filter unit 400.

The main body 200 includes a main body 210 having an inflow space 211 therein, a front cover 220 coupled to a front portion of the main body 210, and a front cover 220 coupled to a rear portion of the main body 210 And a rear lid 230.

The main body 210 is provided with an inflow space 211 therein and is formed into a cylindrical shape extending in the front-rear direction. The main body 210 is respectively opened on the front and rear sides, and a drain pipe (not shown) for discharging the cutting oil sprayed from the cleaning part 500 to the outside is installed in the lower part.

A bracket 212 is provided on a lower surface of the main body 210 so as to be fixed to a frame adjacent to the operation box 15. The bracket 212 extends downward with respect to the main body 210 and a flange portion 213 is provided at a lower end of the bracket 212 so as to be bolted to the frame. The flange portion 213 is formed with a plurality of through holes so that the fixing bolts can be inserted into the frame through the fixing bolts.

In the illustrated example, the main body 210 is formed in a cylindrical shape. However, the main body 210 is not limited to the illustrated example, but may be formed in a rectangular shape.

The front cover 220 is fixed to the front end of the main body 210 so as to close the open front of the main body 210. The suction port 221 is formed at the center of the front cover 220 so that air in the working box 15 can be introduced. At this time, the front lid 220 is connected to the other end of the supply hose 222, one end of which is connected to the operation box 15, and the supply hose 222 is installed so as to communicate with the suction port 221.

The front lid 220 is formed with a plurality of through holes spaced apart from each other along the circumferential direction so that the coupling bolt can penetrate and be fastened to the main body 210. An auxiliary filter 223 is installed inside the front cover 220 so as to cover the suction port 221. The auxiliary filter 223 primarily filters the oil mist contained in the air introduced through the supply hose 222.

The rear lid 230 is fixed to the rear end of the main body 210 so as to close the open rear face of the main body 210. [ An exhaust port 231 is formed at the center of the rear lid 230 so that air passing through the main body 210 can be discharged to the outside. At this time, an exhaust pipe 232 communicating with the exhaust port 231 is provided on the rear surface of the rear lid 230. The rear lid 230 is formed with a plurality of through holes spaced apart from each other along the circumferential direction so that the coupling bolts can penetrate and be fastened to the main body 210.

The inner cylinder 340 is installed inside the main body 200 so as to be separated from the inner side of the main body 200. The front surface of the inner tube 340 is coupled to the front fixing plate 310 and the rear surface is coupled to the rear fixing plate 250. The rear fixing plate 250 is fixed to the front surface of the rear lid 230, and a circular through hole is formed at the center.

An inflow space 211 is located outside the inner cylinder 340. That is, the space between the inner cylinder 340 and the main body 200 is the inflow space 211. The inner cylinder 340 is open front and rear, and a hollow portion 341 having an empty space is formed therein. A plurality of rectangular communication holes 342 are formed in the inner cylinder 340 so that the hollow portion 341 can communicate with the inlet space 211. The hollow portion 341 of the inner cylinder 340 receives a drive motor to be described later.

The suction unit 300 includes a front fixed plate 310 fixed to the inside of the main body 210, an impeller 320 rotatably supported on the front fixed plate 310, And a driving motor 330 mounted on the rotating shaft of the impeller 320 for rotating the impeller 320.

The front fixing plate 310 is formed to have an outer diameter corresponding to the inner diameter of the main body 210 and has an edge fixed to the inner surface of the main body 210. The front fixing plate 310 is formed with a plurality of through holes 311 through which air introduced into the main body 210 can pass through the air inlet 221. An impeller 320 is rotatably installed at a central portion of the front fixing plate 310.

The driving motor 330 is fixed to the rear surface of the front fixing plate 310 and is located inside the inner cylinder 340. The driving motor 330 is connected to the rotating shaft of the impeller 320 and rotates the impeller 320 so that a suction force can be generated to allow the oil mist to flow into the main body 200 through the suction port 221.

The filter unit 400 is installed between the main body 210 of the main body and the inner cylinder 340 to filter the oil mist contained in the air introduced into the main body.

In the illustrated example, the filter unit 400 has a structure divided into a first unit filter module 410 and a second unit filter module 450. The first unit filter module 410 and the second unit filter module 450 are positioned to face each other with the inner tube 340 interposed therebetween. The first unit filter module 410 surrounds half of the outer circumference of the inner cylinder 340 and the second unit filter module 450 covers the other half.

The first unit filter module 410 includes a cartridge which is formed so as to surround the outer surface of the inner cylinder 340 and through which air can pass from one side to the other side and a filtration unit which is housed in the cartridge and filters the oil mist and foreign substances contained in the air. Member 440 as shown in FIG.

The cartridge includes a first plate portion 411 formed to be curved to contact the outer surface of the inner tube 340, a second plate portion 413 formed to be curved to contact the inner surface of the main body 210 of the body, A first perforation network 420 coupled to the front surfaces of the first and second plate portions 411 and 413 and a second perforation network 430 coupled to the rear surfaces of the first and second plate portions 411 and 413, Respectively. A fixing bracket 415 having through holes is formed on the rear surface of the first and second plate portions 411 and 413 so that the second perforation network 430 can be coupled by the bolts 439.

The first and second perforated meshes 420 and 430 are provided with a plurality of slits formed in an inclined manner. Since the aeration slits formed in the first and second perforation networks 420 and 430 are the same, the aeration slits formed in the second perforation network 430 will be described.

The aeration slits 431 and 433 are formed in an elongated slotted structure. Specifically, the vent slits 431 and 433 are classified into two groups (A) and (B) according to the shape as shown in FIG.

The aeration slits 431 belonging to the first group A are elongated in the first diagonal direction. The aeration slits 431 belonging to the first group A are formed at regular intervals from one side to the other side of the second perforation network 430 and arranged in a line.

And the aeration slits 433 belonging to the second group B are disposed adjacent to the aeration slits 431 of the first group A. [ The aeration slits 433 belonging to the second group B are elongated in the second diagonal direction. The second oblique direction is a direction intersecting with the first diagonal direction. The aeration slits 433 of the second group B are formed at regular intervals from one side of the second perforation network 430 to the other side and are arranged in a line.

The first group (A) and the second group (B) described above have a repeating structure arranged alternately to the second perforation network (430). Thus, the flow of air can be smoothly guided by the unique aeration slit structure formed in the first and second perforated networks.

As the filtration member 440 accommodated in the cartridge, a fiber entangled in a three-dimensional structure can be used. Needless to say, a conventional filtering member for oil mist can also be used. Such a filter member serves to filter out oil mist and foreign substances contained in the air.

The second unit filter module also includes a cartridge which is formed to surround the outer surface of the inner cylinder 340 and through which air can pass from one side to the other side and an oil mist contained in the cartridge, Respectively. Since the structure of the second unit filter module is the same as that of the first unit filter module, a detailed description thereof will be omitted.

Reference numeral 425 denotes a protruding jaw protruding from the first unit filter module 410. Reference numeral 460 denotes a protruding jaw protruding from the second unit filter module 450. When the first and second unit filter modules are coupled, They are mutually coupled.

The cleaning unit 500 is installed inside the main body 200 and includes a spray nozzle 510 having a spray hole for spraying coolant at an end thereof and a spray nozzle 510 connected to the spray nozzle 510 to supply the coolant to the spray nozzle 510 (Not shown).

The injection nozzle 510 is installed at the rear end of the front cover 220 by a support rod (not shown). The spray nozzle 510 is supported in a forwardly spaced relation to the impeller 320 with respect to the direction of the air flow in the main body 200 and has a spray hole for spraying coolant on the rear surface of the impeller 320 opposite to the impeller 320 . At this time, one end of the support rod is fixed to the inner surface of the front cover 220, and protrudes toward the center of the front cover 220, and the injection nozzle 510 is fixed to the other end.

The cutting oil supply unit 520 includes a receiving tank 521 in which a cutting oil is received and a nozzle plate 510 having one end connected to the receiving tank 521 and the other end connected to the spray nozzle 510 through the front lid 220 And a supply pump 523 installed in the supply pipe 522 for pumping the coolant stored in the storage tank 521 to the injection nozzle 510.

Hereinafter, the operation of the oil mist precipitator 100 according to the present invention will be described in detail.

First, the operator operates the driving motor 330 to rotate the impeller 320. The suction force is generated by the rotation of the impeller 320 so that the air in the working box 15 flows through the supply hose 222 to the main body 200 ). The air introduced into the main body 200 flows into the filter unit 400 through the through hole 311 of the front fixing plate 310 and the oil mist and foreign substances in the air are filtered through the filter unit 400. The air that has passed through the filter unit 400 flows into the inner cylinder through the vent hole 342 and then is discharged to the outside of the main body 200 through the exhaust port 231. [ At this time, the oil mist contained in the air flowing into the main body 200 is concentrated not only on the filter unit 400 but also on the surface of the impeller 320. The operator operates the supply pump 523 to supply clean cutting oil accommodated in the accommodation tank 521 to the injection nozzle 510. The coolant is sprayed to the impeller 320 through the injection nozzle 510. [ A part of the cutting oil sprayed through the injection nozzle 510 cleans the surface of the impeller 320 and the rest of the cutting oil flows into the filter part 400 together with the air to wash the oil mist adhered to the filter part 400 do.

The oil mist that has been cleaned by the cutting oil is discharged to the outside of the main body 200 through a drain pipe (not shown) provided under the main body 210. The operator can periodically operate the supply pump 523 to perform a cleaning operation.

Since the impeller 320 and the filter unit 400 are periodically cleaned by the cutting oil sprayed from the cleaning unit 500, the oil mist dust collector 100 according to the present invention configured as described above can reduce the cost And manpower can be saved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

100: Oil mist dust collector 200: Body
210: main body 220: front cover
222: Supply hose 230: Rear cover
300: suction portion 310: fixed plate
320: impeller 330: drive motor
340: inner tube 400: filter part
410: first unit filter module 450: second unit filter module
500: Cleaning section

Claims

A main body having an inflow space for allowing outside air to flow therein and having an inlet and an outlet for communicating with the inflow space on both sides;
An inner passage formed inside the main body so as to be spaced apart from an inner surface of the main body, the inflow space being located outside, and a hollow portion communicating with the inflow space;
A suction unit for generating a suction force for allowing the outside air to flow into the main body through the suction port;
A filter unit installed between the main body and the inner cylinder to filter oil mist contained in the air introduced into the main body;
And a cleaning unit installed on the main body and spraying coolant into the main body to clean the filter unit.

The oil mist precipitator according to claim 1, wherein the filter unit is formed such that the first unit filter module and the second unit filter module surround the outer surface of the inner tube with the inner tube interposed therebetween.

The air conditioner according to claim 2, wherein the first and second unit filter modules are configured to surround the outer surface of the inner cylinder and include a cartridge capable of passing air from one side to the other side, And a filter member for filtering off foreign matter.

The cartridge according to claim 3, wherein the cartridge includes a first plate portion formed to be curved to contact the outer surface of the inner cylinder, a second plate portion curved to contact the inner surface of the body, And a second perforated mesh connected to a rear surface of the first and second plate portions.

[5] The apparatus of claim 4, wherein the first and second perforated networks are provided with a plurality of vent slits formed obliquely,
Wherein the vent slits are formed in a first oblique structure formed in a first diagonal direction and a plurality of first groups are aligned in a row and a long oblong structure is formed in a second diagonal direction intersecting the first oblique direction, And a second group arranged adjacent to the first group in a lined manner.

[2] The apparatus of claim 1, wherein the cleaning unit includes a spray nozzle provided inside the body and having a spray hole for spraying the coolant at an end thereof, and a coolant supply unit connected to the spray nozzle to supply the coolant to the spray nozzle Features an oil mist precipitator.