JP2582123Y2 - Solid-liquid separator using both chip conveyor and filter paper filter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention efficiently separates a polluted liquid discharged from various machine tools into a cleaning liquid and solids such as chips and sludge (hereinafter referred to as solids). Device for

[0002]

2. Description of the Related Art There are various machine tools in one factory. For example, a cutting machine or a grinding machine. Each machine tool emits emissions of various properties. In the case of a cutting machine, the discharge is cutting chips, and in the case of a grinding machine, it is abrasive powder. These cutting chips and abrasive powder are discharged from each machine tool as a contaminated liquid together with a cutting liquid or the like. BACKGROUND ART In order to circulate and use a cutting fluid or the like, a solid-liquid separation device for separating a polluted liquid into a cleaning liquid and a solid is used.

Examples of the solid-liquid separation device include a filter paper filter, a magnet separator and the like. The filter paper filter is a device that separates solids from the contaminated liquid by filter paper, and the magnet separator is a device that separates magnetic solids from the contaminated liquid by magnetic force.

[0004]

The former filter paper filter cannot be used when large solids such as cutting chips are mixed in the contaminated liquid. In addition, since the filter paper must be replaced every time clogging occurs, it is inevitable that the consumption of the filter paper increases. The latter magnet separator, like a filter paper filter, cannot separate large solids,
Non-magnetic materials cannot be separated.

[0005] As described above, the solid-liquid separation device cannot perform solid-liquid separation of a contaminated liquid in which various solids are mixed, because the solids that can be separated are restricted based on their functions. Therefore, a solid-liquid separation device must be provided for each machine tool in accordance with the properties of the solids to be discharged, and the space occupied by the solid-liquid separation device in the entire factory cannot be ignored.

SUMMARY OF THE INVENTION An object of the present invention is to provide a solid-liquid separation apparatus which can collectively treat contaminated liquids containing solids of various properties.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a solid-liquid separation apparatus for separating a solid from a solid containing relatively large particles and a relatively small particle. The above object is achieved by a solid-liquid separation device which combines a chip conveyor into which a liquid flows, and a filter paper type filter into which an overflow liquid into which a solid having relatively large particles is separated by the chip conveyor downstream of the chip conveyor. Is to solve.

[0008]

The contaminated liquid flowing out of the machine tool first flows into the chip conveyor. Most of the relatively large solids are separated and discharged by the chip conveyor. Also, even if a high concentration of sludge flows in temporarily,
This sludge settles and is separated and discharged like solid matter having a large particle size. In the chip conveyor, since larger solids are more likely to be separated and discharged, the overflow liquid flowing into the filter paper filter has a low concentration and contains only solids having relatively small particles. The overflow is then filtered by filter paper, and the filtrate is refluxed to the machine tool.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a solid-liquid separation device 10 according to the present invention. The solid-liquid separator 10 includes a chip conveyor 30 and a filter paper filter 30.

The chip conveyor 20 includes various types such as a flight conveyor (also referred to as a scraper conveyor or a scraper conveyor), a spiral conveyor (also referred to as a screw conveyor), and a trough conveyor. Any type can be used as long as it can transport solids.
Since the structure of the conveyor itself is well known, description thereof will be omitted. In this embodiment, a flight conveyor is used. The flight conveyor 20 has a plurality of contaminated liquid inlets 21, an overflow liquid outlet 22, and a solids discharge port 23, as shown in FIG. The flight conveyor 20 scoops up relatively large solids and high-concentration sludge settled in the tank 24 along the bottom surface and discharges the sludge into the chip box 25 from the discharge port.

The filter paper type filter 30 includes, for example, a gravity type filter and a reduced pressure type filter. In the present embodiment, a reduced pressure filter 30 is used. The decompression type filter 30 is provided in the tank 3
1 is provided with a filter paper 32 at the bottom, and the contaminated liquid flowing from the outlet 22 of the flight conveyor 20 is sucked through the filter paper 32 by the vacuum pump 33. As the clogging of the filter paper 32 progresses, the filter paper 32 is sent out by a fixed amount and updated. The renewal of the filter paper 32 is performed when the suction resistance of the decompression pump 33 becomes a constant value.

The cleaning liquid filtered by the filter 30 is returned to various machine tools.

FIG. 2 shows a solid-liquid separator 10 'according to the present invention.
Of the second embodiment is shown. Solid-liquid separator 1 of the present embodiment
0 'is a filter paper type filter device 30' incorporating a chip conveyor 20 'or a unit provided integrally with the chip conveyor 20', and is useful when the flow rate of the contaminated liquid is relatively small.
The configuration in which a filter paper filter 30 'is provided downstream of the chip conveyor 20' and the overflow liquid of the chip conveyor 20 'flows into the filter paper filter 30' is the same as that of the first embodiment.

FIG. 3 shows an example of installation of a solid-liquid separation device in a factory. 12 is a machine tool, 20 is a chip conveyor, and 30 is a filter paper filter. Thus, a plurality of types of machine tools 12..., One solid-liquid separation device 10,
By arranging the polluted liquid recovery pipe 14 and the clean liquid supply pipe 16, it is possible to streamline pipes between various facilities in the factory.

[0015]

The present invention has the following remarkable effects by using two different solid-liquid separation means, a chip conveyor and a filter paper filter, in a specific order. (1) The solid-liquid separation device of the present invention does not matter the properties of solids mixed in the contaminated liquid. That is, when a solid having relatively large particles and a relatively small solid are mixed, when a magnetic substance and a hydromagnetic substance to be treated are mixed, and when solids of various properties are mixed in a contaminated liquid. Even so, after the chip conveyor removes relatively large solids in advance, the overflow of the chip conveyor flows into the filter paper filter, and the filter paper filter removes the solid particles having relatively small particles. Even when a chip conveyor and a filter paper filter are used alone, solid-liquid separation can be effectively performed even for a contaminated liquid containing solids of various properties that cannot be separated. (2) Therefore, the contaminated liquid discharged from each machine tool can be collected in one place and collectively processed.
There is no need to provide a solid-liquid separator for each machine tool, and the space occupied by the solid-liquid separator can be significantly reduced. (3) By providing a chip conveyor upstream of the filter paper filter, relatively large solids can be removed in advance by the chip conveyor, so that the consumption of filter paper can be significantly reduced. (4) In addition, since relatively large particles of solid matter are removed on the upstream side of the filter paper type filter, the burden on the filter paper type filter is reduced, the clogging is reduced, and the processing capacity is improved. Long-term continuous operation is possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a solid-liquid separation device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a solid-liquid separator according to a second embodiment of the present invention.

FIG. 3 is a schematic view showing an example of installation of the solid-liquid separation device of the present invention.

[Explanation of symbols]

 10,10 'solid-liquid separator 20,20' chip conveyor 30,30 'filter paper filter

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B01D 36/04 B01D 29/02 B23Q 11/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A solid-liquid separation device for separating a solid substance from a contaminated liquid containing a solid substance having relatively large particles and a solid substance having relatively small particles, a chip conveyor into which the contaminated liquid flows, A solid-liquid separation device, which is combined with a filter paper filter in which an overflow liquid into which solids having relatively large particles are separated by the chip conveyor flows downstream of the chip conveyor.