JPS6310863Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for cleaning and reusing dirty fluids such as cutting fluids or cleaning fluids from machine tools, and in particular,
This invention relates to a liquid cleaning device that adsorbs and recovers floating oil or floating scum containing oil, oily substances, and fine powder that is difficult to settle.

Machine tools use cutting fluid, cleaning oil, water, etc. for cooling during machining, removing chips, and cleaning. The powder is separated and removed. Various types of separation devices are used, including those that magnetically adsorb, filter, and precipitate. Even if the cleaning liquid has had chips removed by a separator, if it is allowed to stand still, oil, oily substances, fine magnetic chips, and fine particles with air bubbles will float to the surface of the liquid.
This often results in so-called floating oil or floating scum, which needs to be removed.

As shown in Fig. 1, the device for removing floating oil or floating scum consists of a non-magnetic or magnetic rotating disk 1, and a portion of the lower portion of the disk 1 can be immersed under the liquid surface of a stationary cutting liquid tank. It is pivoted by a support arm 2 and rotated by an electric motor 3 placed on it, and a scraper 4 is brought into contact with the upper circular part of this disc 1 to adsorb the surface to the disc surface, or it is magnetically attached to the disc surface using a magnet built into the disc. A disc skimmer configured to scrape off adsorbed floating oil and scum has been proposed.

The above disc skimmer has a simple configuration, but
It has excellent ability to remove and recover oil and floating scum. However, the temperature of the coolant liquid used as a cooling liquid during construction is often over 50℃, and in this case, the rotating disk of the disk skimmer used is immersed in the relatively high temperature liquid. Because the thermal expansion differs between the part and the part in the atmosphere that is not immersed, the disk surface becomes easily deformed, and if it deforms, it will not make good contact with the scraper, making it impossible to sufficiently scrape off floating scum, etc. Another problem was that the contact resistance with the scraper increased, causing the motor to become overloaded.

This device continuously adsorbs floating scum, mainly consisting of oil and oily substances mixed in cutting fluid, non-magnetic fine particles that are difficult to settle, and magnetic chips, regardless of the temperature of the cutting fluid. The purpose is to create a device that can remove

This invention consists of a rotary disk consisting of a ring plate and a spoke part that is horizontally suspended in the inner ring part and holds the ring plate rotatably; A support arm whose width part is pivoted so that it can be immersed under the liquid surface and firmly supported in a liquid tank, etc., and a support arm that comes into contact with the ring plate part of the rotary disk to scrape off floating oil or floating scum, etc. adsorbed on the surface of the rotary disk. This disc skimmer consists of a scraper.

The rotary disk is composed of a ring plate part and a spoke part, and the ring plate may be a ring-shaped plate having a circumferential plate width that takes into account the type of cutting fluid in the liquid tank, the layer thickness of floating scum, etc., and the material. It doesn't matter whether it is magnetic or non-magnetic. Further, the spokes are horizontally attached to the inner circular space of the ring in order to rotatably support the ring plate, and may have any configuration, preferably in the liquid at the joint with the ring plate. It is preferable to have a structure in which the ring plate is not fixed so as to prevent thermal expansion of the ring plate being immersed from being transmitted to the spoke parts.

That is, in this invention, the rotating plate on which floating oil or floating scum is attached is a ring plate, which has only a part that is immersed in the liquid, and unlike a conventional disc, there is a immersed part that causes a difference in thermal expansion, and a non-immersed part. Since there is no continuous plate surface in the immersed part, the rotary disk does not deform.

It is also possible to incorporate a magnet inside the ring plate, or any type of material may be used as long as the main surface of 2 is made of a non-magnetic disc, and the outer periphery of the ring plate may be made of either magnetic or non-magnetic material. may be configured. Also,
In addition to the ring plate magnet, the magnets disposed around the ring plate may include a plurality of magnets arranged at predetermined intervals, and the material may be appropriately selected depending on the required magnetic force.

The support arm may be of any type, such as hanging, supporting, or mounting, in addition to being horizontally suspended over the liquid layer as shown in the embodiment, and the support arm may be of any type such as a suspension support, a support arm, or a mount. Any structure is sufficient as long as it can be pivoted so that it can be immersed in the water.

The scraper may have any configuration as long as it is capable of scraping off floating scum etc. adhering to the ring plate of the rotary disk, and a guide groove plate or the like may be attached to guide the scraped floating scum to the storage box.

Examples will be described in detail below based on the drawings. Second
The figures are a front view and a side view of the liquid cleaning device according to this invention.

In the embodiment, an example is shown in which the rotary disk 10 is horizontally suspended by a support arm 14 fixed to the side wall of a liquid tank 20.

The rotary disk 10 includes a ring plate 11 and cross spokes 1.
2 is screwed to the inner edge of the ring plate 11 via the connector 13, but the screw hole is an elongated hole, and the expansion of the plate width in the diametrical direction due to thermal expansion of the ring plate 11 is not directly transmitted to the cross spokes. Consists of structure.

This rotary disk 10 has a rotary shaft fitted in a center hole at the intersection of cross spokes 12, and is supported by a support arm 14, and the support arm 14 is bolted to the side wall of a liquid tank 20 via a fixing plate 16. be. Further, an electric motor 15 is attached to the shaft support of the support arm 14, and is configured to transmit driving force to the rotating shaft of the rotary disk 10 via a built-in gear box.

The support arm 14 is connected to the ring plate 11 of the rotary disk 10.
The lower arc part of the liquid tank 2 is supported so that it can be immersed under the liquid surface.
0, but here the ring plate 11
has a width corresponding to the thickness of the floating oil or floating scum tank, and the ring plate 11 is positioned so as to face the floating oil or floating scum on the liquid surface.

Further, a scraper 17 is brought into contact with the upper circular portion of the ring plate 11 of the rotary disk 10. Here, the side plate of the gutter-like shape is used as a scraper, and this scraper is used so that the scraped floating scum etc. can slide down. 17 is fixed to the fixed plate 16 at an angle. The lower end of this scraper 17 faces above a receiving box for floating oil or floating scum.

In the above configuration, when the rotary disk 10 is rotated at low speed clockwise in FIG.
Fine floating chips, magnetic chips with attached air bubbles, or chips in the process of floating are adsorbed to the surface of the ring plate 11 by the surface tension of the liquid, separated from the liquid, and moved upward. Then, it is scraped off at the scraper 17 position, slides down the groove of the scraper 17, and is collected in a receiving box.

In the disc skimmer according to this invention, the rotating disc is a ring plate that is immersed below the liquid surface to adsorb floating oil or scum using the surface tension of the liquid.
Only the parts that require immersion are immersed in high-temperature liquids, and there is no continuous plate surface in the diametrical direction, which should cause deformation due to differences in thermal expansion. Not only can it easily and continuously separate and remove floating scum, but it also has a simple structure and requires only a small amount of space when installed, so it can be installed or attached to any liquid tank or liquid purification device. Since there are no consumable parts such as filter paper, it can be maintained at low cost.

[Brief explanation of the drawing]

FIG. 1 is a front view and a side view of a conventional disk skimmer, and FIG. 2 is a front view and a side view of a disk skimmer according to this invention. 1...Disk, 2,14...Support arm, 3,1
5...Electric motor, 4, 17...Scraper, 10...
... Rotating disk, 11 ... Ring plate, 12 ... Cross spoke, 13 ... Connector, 16 ... Fixed plate, 20
...liquid tank.

Claims (1)

[Scope of utility model registration request] A rotary disk consisting of a ring plate and a spoke part that is horizontally suspended in the ring inner circle and holds the ring plate rotatably, and an electric motor for driving the rotation of the rotary disk is mounted, and the ring plate width portion of the rotary disk is heated with liquid. It consists of a support arm that is pivotably supported so that it can be submerged under the surface and fixedly supported in a liquid tank, etc., and a scraper that comes into contact with the ring plate part of the rotary disk and scrapes off floating scum, etc. adsorbed on the surface of the rotary disk. disc skimmer.