JPH0556209U - Solid-liquid separation device that uses both chip conveyor and filter paper filter - Google Patents

Abstract

(57) [Summary] [Purpose] Efficiently separating pollutants containing solids of various properties discharged from multiple machine tools into clean liquids and solids. The solid-liquid separation device comprises a chip conveyor into which a contaminated liquid containing a solid substance flows, and a filter paper type filter into which the overflow liquid of the chip conveyor flows. The solid matter discharged from various machine tools flows into the chip conveyor as a pollutant together with the grinding fluid and the like. Then, on the chip conveyor, relatively large solid matter is separated and removed.
The overflow liquid of the chip conveyor flows into a filter paper type filter and is filtered. The filtered liquid is returned to various machine tools as a cleaning liquid.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a device for efficiently separating polluted liquid discharged from various machine tools into a cleaning liquid and a solid substance such as chips and sludge (hereinafter referred to as a solid substance). .

[0002]

[Prior Art]

 There are various machine tools in one factory. For example, a cutting machine or a grinding machine. Emissions of various properties are emitted from each machine tool. In the case of a cutting machine, the discharge is cutting debris, and in the case of a grinding machine, it is abrasive powder. These cutting chips and polishing powder are discharged from each machine tool as a polluted liquid together with the cutting liquid. In order to circulate the cutting fluid and the like, a solid-liquid separation device is used to separate the polluted liquid into a clean liquid and a solid matter.

Examples of the solid-liquid separation device include a filter paper filter and a magnet separator. Filter Paper A filter is a device that separates solid matter from a contaminated liquid by a filter paper, and a magnet separator is a device that separates magnetic solid matter from a contaminated liquid by magnetic force.

[0004]

[Problems to be solved by the device]

 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 each time it becomes clogged, it is inevitable that the filter paper consumption will increase. The latter magnetic separator, like the filter paper filter, cannot separate large solids and cannot separate non-magnetic materials.

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

An object of the present invention is to provide a solid-liquid separation device capable of collectively treating a polluted liquid containing solid substances having various properties.

[0007]

[Means for Solving the Problems]

 The present invention solves the above-mentioned problems by a solid-liquid separation device including a chip conveyor into which a contaminated liquid containing a solid substance flows, and a filter paper type filter into which an overflow liquid of the chip conveyor flows. is there.

[0008]

[Action]

 The polluted liquid flowing out from the machine tool first flows into the chip conveyor. Most of the solids with relatively large particles are separated and discharged by this chip conveyor. Moreover, even if a pollutant with a high sludge concentration flows in temporarily, this sludge settles and is separated and discharged similarly to solids with large particles. Since larger solids are more easily separated and discharged on the chip conveyor, the overflow liquid flowing into the filter paper type filter has a low concentration and contains only solids with relatively small particles. The overflow liquid is then filtered by filter paper and the filtrate is returned to the machine tool.

[0009]

【Example】

 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 separation device 10 includes a chip conveyer 30 and a filter paper type filter 30.

The chip conveyor 20 includes various types such as a flight conveyor (also called a scraper conveyor or a scraper conveyor), a spiral conveyor (also called a screw conveyor), and a trough conveyor. However, any type can be used as long as it can transport solid objects. Since the structure of the conveyor itself is well known, its explanation is omitted. In this embodiment, a flight conveyor is used. As shown in the figure, the flight conveyor 20 has a plurality of contaminant liquid inlets 21, an overflow liquid outlet 22, and a solid matter outlet 23. The flight conveyor 20 scrapes up relatively large solids and high-concentration sludge precipitated in the tank 24 along the bottom surface and discharges the sludge into the chip box 25 through the discharge port.

The filter paper type filter 30 includes, for example, a gravity type filter and a vacuum type filter. In this embodiment, the vacuum filter 30 is used. The depressurization type filter 30 is provided with a filter paper 32 at the bottom of a tank 31, and a contaminant pumping from the outlet 22 of the flight conveyor 20 is sucked through the filter paper 32 by a decompression pump 33. When the clogging of the filter paper 32 progresses, a fixed amount of the filter paper 32 is sent out and updated. The filter paper 32 is updated when the suction resistance of the decompression pump 33 reaches a constant value.

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

FIG. 2 shows a second embodiment of the solid-liquid separator 10 'according to the present invention. The solid-liquid separator 10 'of this embodiment is a filter paper type filter 30' with a chip conveyor 20 'incorporated therein, or these are integrally provided, and the flow rate of the polluted liquid is relatively low. Useful in cases. The filter paper type filter 30 'is provided on the downstream side of the chip conveyor 20' and the overflow liquid of the chip conveyor 20 'is introduced into the filter paper type filter 30' in the same manner as in 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 type filter. In this way, by arranging a plurality of types of working machines 12, ..., One solid-liquid separation device 10, the polluted liquid recovery pipe 14, and the clean liquid supply pipe 16, various facilities are installed in the factory. The piping between can be rationalized.

[0015]

[Effect of the device]

 The present invention, having the above-mentioned configuration, has the following remarkable effects. (1) The solid-liquid separation device of the present invention does not care about the property of the solid matter mixed in the polluted liquid. That is, when a relatively large solid substance and a relatively small solid substance are mixed, a magnetic substance and a non-magnetic substance are mixed, and when solid substances of various properties are mixed in the polluted liquid. Can also effectively perform solid-liquid separation. (2) Therefore, the polluted liquid discharged from each machine tool can be collected in one place and collectively processed, and there is no need to provide a solid-liquid separation device for each machine tool as in the past, The space occupied by the separation device can be significantly reduced. (3) By providing a chip conveyor on the upstream side of the filter paper type filter, a relatively large solid substance can be removed in advance by the chip conveyor, so that the consumption of filter paper can be significantly reduced. (4) Further, since the load on the filter paper type filter is reduced, clogging is reduced, the processing capacity is improved, and continuous operation for a long time is possible.

[Brief description of drawings]

FIG. 1 is a perspective view of a solid-liquid separator 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 installation example of the solid-liquid separation device of the present invention.

[Explanation of symbols]

 10, 10 'Solid-liquid separation device 20, 20' Chip conveyor 30, 30 'Filter paper filter

Claims (1)

[Scope of utility model registration request] 1. A solid-liquid separation device comprising a chip conveyor into which a contaminated liquid containing a solid substance flows, and a filter paper type filter into which an overflow liquid of the chip conveyor flows.