KR20020019471A - Device for maintaining and cleaning a working medium - Google Patents

Abstract

The present invention relates to a device for servicing and purifying the working medium (3), in particular coolants, oils, which can be transferred to at least one filter by at least one conduit, in particular a flexible tube (6). apparatus for the maintenance and purification of working media 3, such as oils, grinding water, vehicle washing water, and washing baths. According to the invention, the vacuum- and / or pressure generating device is arranged in the filter 13 or the filter pads 41 and 41.1, and the working medium can be distributed from various directions to the filter. . The working medium 3 flows into the filter pad and reaches the delivery part 12 from the inside of the filter pads 41 and 41.1.

Description

Equipment for maintenance and purification of working media {DEVICE FOR MAINTAINING AND CLEANING A WORKING MEDIUM}

Working media are currently used in many industrial technologies. The working medium must be cleaned continuously or discontinuously as significant contaminants are generated during use. Coolants, for example, are quickly subjected to aging by other (heterogeneous) oils, frictional metal debris, debris, dirt, and bacteria. Due to these impurities, the working medium starts to smell bad, and at first glance causes problems in finished quality and work hygiene.

Further problems with the working medium are described in particular in German patent number DE 197 18 217 A1, in which the medium is purified by air-floating in a purifier.

The present invention is directed to improving a conventional purifier using a filter through which the working medium flows.

In order to achieve this object, in the apparatus according to the present invention, a filter or a filter pad is arranged with a vacuum and / or a pressure generating device, wherein the filter can be circulated with the working medium from various directions. The working medium flows into the filter pad and reaches the delivery unit from the inside of the filter pad.

The device according to the invention can be used, for example, by means of vacuum or pressure to be distributed from and to the operating machine to purify the working medium by simple techniques and methods by the filter. For this purpose, it has proved advantageous for the filter to use a vacuum generator which is arranged behind the flow direction of the working medium. The pressure generating device is arranged in series opposite the filter. In addition, a combination of the two operating methods of the vacuum and the pressure generator can be considered.

An essential feature of the present invention is that the working medium can be passed through the filter from various directions. This means that the working medium to be purified from the filter is not simply perfused in one predetermined direction, but rather that the working medium to be purified reaches the interior of the filter through the filter wall and then exits again. This results in the majority of the filter surface being used for filtration and the substantial filtration surface is thus greatly enlarged. For this reason, all of the above devices become compact.

A further advantage of the operating mode according to the invention is that, for example, an essential part of the device settled for most of the processing device can be used as a source of working medium to be purified. In one example, the central tank, which is intended as the bottom tank, is under vacuum, and the working medium to be cleaned is evacuated from the reservoir to the working machine through the vacuum. The suction of the working medium to be purged from the central tank with the device according to the invention is also achieved by vacuum.

The apparatus also has a conduit connected to one central feed conduit, through which the purified working medium is transferred back to several processing apparatus.

Another feature of the invention is that the filter consists of a wire mesh, in particular an alloy mesh, an alloy fleece and the like.

In practical fabrication, it is evident that the use of alloy mesh or alloy fleece will substantially improve the purity of the working medium through the strength and elaboration of the resulting filter. The working medium flowing out of the filter is substantially better purified than that purified in known filters.

In a preferred embodiment the filter is made from several filter pads connected to one another. Multiple filter pads constitute one filter package. Each filter pad is layered. In this connection, a filter layer made of a metal mesh is disposed between one outer filter wall and one inner filter wall. It is also essential that a support net be installed between the filter layers.

Conventional filter housings are equipped with rectangular filters. However, other features of the present invention also contemplate the use of circular filters. In addition, the filter includes a support plate having a gap retention therein, through which the one outer filter wall and one inner filter wall is separated from each other. Both filter walls allow the working medium to be purified to flow through.

In another embodiment of the present invention, the circular filter as described above may be installed rotationally. In this case, since only a part of the filter may be purged of the working medium, the working medium may flow through only the part of the filter in which the working medium is soaked. In this case, in the outflow mechanism of the filter, contaminants from the working medium may be removed by rotational or centrifugal force on the surface of the filter, and the contaminants may be collected in a separate container.

A second feature of the invention using the filter as well as known filters, in particular alloy nets or alloy fleeces, is that the filter is equipped with a rewashing device. The recleaning device should be used to occasionally remove debris from sticking to the filter. In this mechanism, the rewash occurs abruptly. In other words, the remediation medium is subjected to significant air pressure and enters the filter.

What is important in the apparatus of the present invention is the form of a filter, which may be referred to as a filter package, a filter pad, or the like.

The precipitate accumulated in the filter housing is preferably discharged to sliding doors or sliding doors that are mechanically or automatically opened.

The working medium is transferred from the filter housing to the processing tank via a delivery unit. Preferably, the pressure relief / floating device is provided in the second filter bed as described in DE 197 18 217 A1. In this case, as the purification of the working medium using atmospheric oxygen is performed, anaerobic bacteria are extinguished, and thus the working medium may not be contaminated or smell bad. For example, the introduced working medium may be compressed and relax in a work room. The relaxation after this compression removes other types of oil and the air introduced breaks tiny bubbles. Application of the known flotation method causes microbubbles from contaminants floating in the heterogeneous oil and coolant to float to the surface of the working medium with stirring. The emulsion to be clarified is washed by the flow of countercurrent itself, but also by fine microbubbles.

All suspended matter present in the coolant and the contaminants on the surface together with the floating foam are transported and removed by the surface suction filtration system. The surface suction filtration system preferably pumps dirt particles into a waste container, in which the dirt particles may be disposed of.

In the present invention, it is preferred that a third filtering of the working medium is carried out. The third filtration is performed through a microfiltration wall, and the clean room is partitioned in the work chamber and the waste collection container, and the working medium flows out / returns out of the clean area under the microfiltration wall again. The working medium is sucked through the filtration wall.

The bottom of the work chamber and the waste collection container is inclined so that the remaining contaminants may be discharged through the discharge valve after the remaining contaminants are deposited.

The device according to the invention has the important advantage that the working medium is completely purified physically without the filter having to be disposed of. This purification is carried out in three steps. In the first filtration step, precipitates and debris are removed up to 1 μm or less depending on the fineness of the filter. In the second clarification step, removal of oil or bacteria into an integrated waste container is done in the workroom. At the same time the working medium is automatically ventilated and circulated. In a third step, the removal by diesel is carried out at the microfiltration wall.

The compacting device for cleaning and maintenance for the working medium can be operated fully fully automated.

The present invention relates to a device for maintaining and cleaning a working medium, in particular coolants, oils which can be transferred to at least one filter by at least one conduit, in particular a flexible tube. A device for servicing and purifying working media such as oils, grinding water, vehicle washing water, and washing baths.

1 is a partially open schematic view of an apparatus for maintenance and purification for a working medium according to the invention,

Figure 2 is a use state showing the maintenance and purification device for the working medium according to another embodiment of the present invention with a processing apparatus,

3 is an open rear view of the device shown in FIG.

4 is a longitudinal sectional view of the filter package according to the present invention;

5 is a partially enlarged view of the longitudinal cross-sectional view shown in FIG. 4;

6 is a schematic diagram of a plant incorporating a maintenance and purification device for a working medium;

7 is a perspective view showing a support plate for one embodiment of a filter pad according to the present invention;

8 is a schematic diagram of a filter housing for the filter pad of FIG. 7.

Hereinafter, a maintenance and purification apparatus for a working medium according to the present invention will be described in detail with reference to the accompanying drawings.

1 shows a schematic processing device 1, in which the bottom removal part 31 is arranged a collection vessel 2 for a working medium 3, for example a coolant. . The working medium 3 flows out from the container 2 to the suction spout 32 using the conveying pump 23 and is supplied via the conveying conduit 33 of the processing apparatus 1. The working medium used in the processing machine 1 is again introduced into the container 2 via the conduit 34.

The vessel 2 is provided with an inclined bottom portion 35 so that not only the working medium 3 but also the settled contaminants lead to the lower corner of the vessel 2, where, for example, a heavily contaminated operation The medium is sucked / drained through the suction pump 36.

The working medium 3 to be purified is discharged through the suction spout 5 of the container 2 and flows into the filter housing 7 containing the filter 13. The working medium flows through the filter 13 to form a vacuum column 37 having a vacuum pump 10 mounted thereon through a delivery unit 12. In the vacuum cylinder 37, a filter 38 is provided at the portion of the vacuum pump 10 side. The filtered working medium flows directly into the vessel 2 from the vacuum cylinder 37, and the vessel is provided with dotted partition walls 39.1, 39.2 and 39.3 indicated by short lines.

The filtered contaminants are collected on the bottom of the filter housing 7 and are discharged to the transport cart 16 with the sliding door 15.1 open. A recleaning device is provided via a conduit provided with a valve 14 for recleaning the filter 13.

2 and 3 illustrate another schematic processing apparatus 1, which is provided with a container 2 for a working medium 3.

In order to maintain and purify the working medium 3, the worker 4 inserts the suction spout 5 into the working medium 3 and filters the filter housing via the flexible tube 6 using a vacuum or a pressure pump. (7) to supply the working medium. Above the filter housing 7 is provided a variable arm 8 having a tube support 9.

In order to generate the vacuum necessary to withdraw the working medium 3 from the vessel 2, the apparatus 9 for maintenance and purification of the working medium 3 according to the invention draws in air from the working chamber 11. A vacuum pump 10 is provided, and the work chamber 11 is connected through a delivery unit 12 mounted to the filter housing 7. Unexplained reference numeral 30 is a known air filter.

In one embodiment, the filter housing 7 is provided with a filter 13 in the form of a plurality of filter packages. The filter package 40 is illustrated in FIGS. 4 and 5, wherein the filter package 40 includes a filter pad 41 and an auxiliary pipe 42 in an adjacent filter package or delivery unit 12. As shown in FIG. 5, the filter pad 41 has a multi-wall structure, and an outer filter wall 43 is formed at the outermost part, and a passage for the working medium is formed inside the filter pad 41. That is, a substantial filter layer 44 made of a metal fleece, preferably an alloy network, is formed inside the outer filter wall 43. Next, a stronger and rougher support network layer 45 is formed than the filter layer 44, and then an inner filter wall 46 having a corresponding passage is formed.

The two inner and outer wall structures facing each other are spaced apart by the spacing 47.

The filter housing 7 is provided with a re-cleaning device 14 shown only schematically, so that the filter 13 can be rewashed. The recleaning mechanism is preferably carried out abruptly in the rewashing apparatus having an air tank under pressure of about 1 to 6 bar. That is, by using the rewashing device 14 to remove the residue present in the filter abruptly.

The debris or sediment is discharged from the filter housing 7 by the opening of the door 15 and introduced into the transport cart 16.

It is also a feature of the present invention that pressure relaxation takes place in the work chamber, which is described, for example, in German patent number DE 197 18 217 A1. Therefore, detailed description thereof will be omitted herein.

Referring to FIG. 3, a work chamber 11 is partitioned into another container, in which two work containers 17.1 (17.2) and a waste collection container 18 are arranged. These three containers 17.1, 17.2, 18 are divided by a microfiltration wall 19.

In the working vessel 17.1, the floating oil 20 or the like is removed by the float 21 of the oil suction filtration system. The float 21 is preferably manufactured as described in DE 197 18 217 A1.

The float 21 is connected to the pump 22, for example, the soiled working medium sucked by the pump 22 is once again introduced into the filter housing 7 or the waste collection container 18. Can be.

2 and 3, the transfer pump 23 draws the purified and maintained working medium from the working vessels 17.1 and 17.2 below the microfiltration wall 19 and again via the conduit 24. Inflow to (2). The suction pipe and the like provided in the upper region of the microfiltration wall 19 are not shown.

The waste collection container 18 is provided with a discharge valve 25 so that the contaminated working medium is discharged to the secondary container 26.

The fullness of the work vessels 17.1, 17.2 and the whole waste collection vessel 18 is supervised by a level sensor 29.1, 29.2 and 29.3, respectively.

Next, the operating method of the device according to the invention is as follows:

The working medium 3 is discharged from the container 2 through the suction spout 5 while the vacuum pump 10 for evacuating the working chamber 11 is operated. Next, the working medium 3 flows into the filter housing 7 through the flexible tube 6 and flows through the filter 13 to reach the delivery unit 12 and then to the work chamber 11. .

As shown in FIG. 1, the working medium 3 may be introduced into the filter pads 41 of the filter 13 from various directions. Not only the entire surface of each filter pad 41 but also the filter role to the connection area of the filter pad 41 serves to make the best use of the filter.

The working medium 3 reaches the interior of the filter through the filter wall and reaches the delivery part 12 via a connecting auxiliary pipe 42.

Sediment and foreign particles are adsorbed to the filter 13 up to about 95 to 99.9%, and later fall down or adhere firmly to the filter debris. By applying the distribution technology from the outside to the inside, the adsorbed precipitate is almost broken at the filter surface and can be removed relatively easily using the rewashing method. Because the rewashing device 14 is activated at irregular intervals, the filter dregs are removed from the filter, and the dregs are manually or automatically opened from the filter housing 7 by opening the opening door 15 at irregular intervals. Will be released.

Each of the filter pads 13 may be in any form. In particular, the filter pads 13 need to be suitable for the shape of the filter housing 7. When the filter housing 7 is rectangular, the epithelial filter pad is also generally rectangular, and if the filter pad is circular, the filter pad inverted is circular, and thus the connecting auxiliary pipe 42 is almost in the shape of a hub.

In the work chamber 11 a second filtration step may be carried out, i.e., the upper part of the float 21, which automatically sucks up the floating oil or the like as part of an integrated surface suction filtration system and collects the waste container 18. Will be removed. Although not shown in the drawings, the working medium can be further purified using a precise atmospheric oxygen injection method through a pressure flotation device integrated with the device of the present invention. This prevents the presence of bacteria and fungi and prevents odors from occurring.

Next, the working medium is first flowed out of the microfiltration wall 19 to perform a third filtering mechanism, which is to further suppress diesel and suspended substances, and the working medium is used to clean the microfiltration wall 19. Run before the area is reached. This is done in the transfer pump 23 and in the conduit.

6 shows a stationary device 9 for maintenance and purification of the working medium, which is connected to a conduit or flexible tube 6 connected to the bottom tank 48. The working medium from the bottom tank 48 is supplied to the apparatus via a suction conduit 6 and the working medium purified by the processing apparatuses 1.1 and 1.2 respectively via the two conduits 49 and 50 respectively. Will be supplied.

FIG. 7 shows a support plate 52 for a filter pad 41.1 according to another embodiment, in which the filter pad 41.1 (see FIG. 8) is circular and thus the support plate 52. It is also circular. The support plate 52 includes an outer frame 53 and an intermediate ring 54, and is connected to each other by the concentric annular member 56 between the outer frame 53 and the intermediate ring 54. The radial bridge 55 extends. A spacing 47.1 is protruded from each of the radial bridges 55.

A filter cloth is attached to the radial bridge 55 and the concentric annular member 56, and the structure may be as shown in FIG. Another filter structure is a filter cloth attached to the spacer 47.1, the wall structure may also be as shown in FIG.

Referring to Fig. 8, the filter pad 41.1 is mounted to the filter housing 7.1, and preferably rotated. In this case, it is natural that the plurality of round filter pads 41.1 are arranged before and after, as the structure for the filter 13 shown in FIG. In this case, the intermediate ring 54 is provided with a connection auxiliary pipe similar to the connection auxiliary pipe 42. The connection auxiliary pipe 42 acts as a hub. The suction mechanism of the working medium 3 to the filter pad 41.1 is made through the connecting auxiliary pipe 42 as described in the operating method of the present invention described above.

The working medium to be purified is introduced into the filter housing 7.1 at the bottom of the filter pad 41.1 as indicated by arrow 57. Since the filter pad 41.1 is rotated in the working medium 3, the working medium 3 can penetrate into the pad 41.1. This penetration is supported through pressure or vacuum.

The contaminants deposited on the filter pad 41.1 are dropped onto the working medium 3 as the filter pad 41.1 rotates, and fall into the collecting container 58 which is part of the filter housing 7.1. The time to essential rewashing mechanisms is thus extended.

Claims (20)

To a device for servicing and purifying the working medium (3), in particular coolant, oil, grinding water, internal combustion engine wash water, and cleaning solution, which has entered the at least one filter through at least one conduit, in particular a flexible tube (6). In The filter 13 or the filter pads 41 and 41.1 is provided with one vacuum or pressure generating device 10 and the working medium can be introduced into the filter from a plurality of directions, but the working medium 3 The device for maintenance and purification of the working medium, characterized in that the flow into the filter pad is introduced into the delivery unit from the inside of the filter pad (41, 41.1). To a device for servicing and purifying the working medium (3), in particular coolant, oil, grinding water, internal combustion engine wash water, and cleaning solution, which has entered the at least one filter through at least one conduit, in particular a flexible tube (6). In Apparatus for maintenance and purification of a working medium, characterized in that the filter (13) or filter pads (41, 41.1) are provided with a rewashing device (14). To a device for servicing and purifying the working medium (3), in particular coolant, oil, grinding water, internal combustion engine wash water, and cleaning solution, which has entered the at least one filter through at least one conduit, in particular a flexible tube (6). In Apparatus for maintenance and purification of a working medium, characterized in that the filter (13) is provided with one metal mesh, in particular alloy mesh or alloy fleece. The method according to any one of claims 1 to 3, Maintenance of the working medium, characterized in that the filter 13 is provided with a vacuum generating device 10 and / or a pressure generating device in front of the flow direction of the working medium behind the flow direction of the working medium (3) and Purification device. The method according to any one of claims 1 to 4, And said filter comprises one or more filter packages or filter pads (41, 41.1) connected to each other. The method of claim 5, And two filter walls (46) facing each other of said filter package or said filter pad are separated from each other by a gap retaining aperture (47, 47.1). The method according to claim 5 or 6, The filter pad 41 is composed of at least one outer and inner filter walls 43 and 46, and a filter layer 44 made of a metal mesh is interposed between the filter walls. And purification devices. The method of claim 7, wherein Apparatus for maintenance and purification of the working medium, characterized in that the support network layer 45 is interposed between the filter layer (44) and the inner filter wall (46). The method according to any one of claims 1 to 8, The filter pad (41.1) is made in a circular shape, the device for maintenance and purification of the working medium, characterized in that the connection auxiliary pipe is provided near the central portion of the transmission. The method of claim 9, The filter pad (41.1) is a device for maintenance and purification of the working medium, characterized in that the rotatable. The method according to claim 9 or 10, The filter pad (41.1) is a device for maintenance and purification of the working medium, characterized in that mounted in the filter housing (7.1) provided with a container (58). The method according to any one of claims 1 to 10, The filter (13) is a device for maintenance and purification of the working medium, characterized in that mounted in the housing (7) provided with a sliding door or a sliding door for the discharge of the residue. The method of claim 11, The delivery unit (12) is connected to the working room (2, 11, 17.1, 17.2, 37) from the housing (7) for the maintenance and purification of the working medium. The method of claim 13, Device for maintenance and purification of a working medium, characterized in that the working medium (3) in the working chamber (17.1, 17.2) is provided with a surface suction filtration system (21, 22). The method according to claim 13 or 14, Apparatus for the maintenance and purification of working media, characterized in that the working chambers (17.1, 17.2) are provided with a microfilter, in particular a microfiltration wall (19). The method according to any one of claims 13 to 15, Device for maintenance and purification of the working medium, characterized in that the working chamber (17.1, 17.2) is provided with a waste container (18). The method according to any one of claims 13 to 16, Apparatus for the maintenance and purification of the working medium, characterized in that the bottom of the working chamber (2, 17.1, 17.2) and / or the waste container (18) is inclined. The method of claim 17, Apparatus for maintenance and purification of a working medium, characterized in that the outlet valve (28) is provided at the deepest point of the work chamber (2, 17.1, 17.2) and / or the waste container (18). The method according to any one of claims 13 to 18, Device for maintenance and purification of the working medium, characterized in that the working room (2, 17.1, 17.2) and / or the waste collection container (18) is provided with a device for detecting the water level. The central tank 48 is connected to the apparatus 9 for maintenance and purification of the working medium and to a number of sources 1.1, 1.2 for the working medium via suction conduits 6, 49, 50. 9) A plant using the apparatus according to any one of claims 1 to 19, wherein the supply of the working medium purified from the center is made.