JPS6240644Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, chips discharged from machine tools are poured into a cutting fluid tank or sedimentation tank with cutting fluid, as described in Japanese Utility Model Publication No. 54-35409, and a scraper installed in the sedimentation tank is used. Normally, the precipitated chips are discharged to the outside using a conveyor, etc., but some of the cutting fluid is also scraped out along with the chips, so not only can the consumption of the cutting fluid not be ignored, but the discharged chips can also be scraped out. The problem was that the cutting fluid that dripped during transport or conveyance on a conveyor contaminated the passageways and roads within the factory.

The present invention relates to an apparatus for separating liquid from precipitates used in such cases.

This invention is based on a sedimentation tank with a conveyor trough attached to one end for discharging the bottom sediment out of the tank.The first half is equipped with a saucer whose upper end is covered with a perforated plate, and the center of gravity of a lever is equipped with a weight at the rear end. The front part is pivoted to the trough so that the tray can swing up and down below the discharge port at the upper end of the trough, and a stopper is attached to the trough side to stop the lever at a normal position slightly raised forward. The end of the lever pivot shaft side of the saucer in the normal position is opened downward, and a liquid receiving gutter or container is placed directly under the opening so as not to obstruct the tilting of the lever that allows sediment to fall onto the perforated plate. It is characterized by

An embodiment of the present invention will be described below with reference to the drawings.
1 is a settling tank that receives chips and cutting fluid discharged from machine tools; 2 is a scraper conveyor that discharges the chips settled at the bottom of the settling tank 1 to the outside of the tank; the scraper conveyor 2 has chains on both sides; The structure is similar to the conventional one, in which scrapers 4 installed at regular intervals between the sedimentation tank 4 are rotated endlessly along a trough 5 installed at an angle at the bottom and front end of the sedimentation tank. The lifted chips (sediments) and cutting fluid are discharged from the discharge port 5a at the upper end of the trough.
fall more.

The saucer 6 is formed by closing the bottom part of the front half between the plate-like levers 7, 7 on both sides with a space that allows the trough 5 to be fitted loosely, and the upper end opening is made of a perforated plate 8 (wire mesh) having a large number of long holes 8a. etc.), and the rear end of the saucer has an opening 6a downward. Lever 7, 7 on both sides
In this case, a lever pivot shaft 9 inserted into the slightly rear part of the perforated plate is attached to bearings 10 fixed to both sides of the trough 5 so that the saucer 6 or perforated plate 8 swings up and down directly below the discharge port 5a. Each lever 7 is pivoted on the trough by being supported, and a weight is mounted on the outside of the rear end of each lever 7 so that the center of gravity of the lever as a whole is located slightly behind the lever pivot shaft 9 (to the right in the figure). 11 is fixed.

Reference numeral 12 denotes a stopper fixed to both sides of the trough 5, facing the lower surface of the rear end of the levers 7 on both sides, which are urged to rotate clockwise (in FIG. 1) by their own weight. 7 is stopped at a normal position slightly raised forward, and accordingly, the bottom plate of the saucer 6 and the perforated plate 8 also have a normal position slightly raised forward. The forward upward slope of the saucer bottom plate in the normal position is greater than the forward upward slope of the perforated plate 8. 13 is a perforated plate 8
A liquid receiving gutter 13 is disposed directly under the rear end opening 6a of the saucer 6 so as not to obstruct the inclination of the lever 7 that drops the chips C accumulated on the top.
It is located above the liquid level L of the sedimentation tank 1 and is connected to the liquid receiving port of the settling tank 1 via a communication gutter 14 as appropriate. In the figure, reference numeral 15 indicates a chip transport vehicle for receiving chips accumulated on the perforated plate 8, reference numeral 16 indicates a driving chain wheel of the scraper conveyor 2, and reference numbers 17, 18, 19, 20, etc. indicate chain guide wheels.

According to the above configuration, when the chains 3 on both sides are rotated by the chain wheel 16, the precipitated chips in the settling tank 1 are collected in the trough 5.
The discharge port 5a is scraped up by the scraper 4 along the
The particles fall further and accumulate on the perforated plate 8 which is always in place. At the same time, the cutting fluid discharged from the discharge port 5a passes through the elongated hole 8a and flows into the saucer 6 which is inclined forward.
The water flows down on the inclined bottom plate of the tank, flows into the gutter 13 through the opening 6a, and returns into the sedimentation tank 1 through the gutter 14. In this case, since the lever 7 or the perforated plate 8 is inclined slightly upward, there is no fear that the cutting fluid will flow down the perforated plate onto the carrier 15.

When the counterclockwise rotational moment of the lever 7 due to the weight of the chips accumulated on the perforated plate 8 comes to overcome the clockwise rotational moment of the lever due to the weight 11, the lever 7 is rotated about the shaft 9 as shown in the chain line. It rotates as shown in A, and the chips C accumulated on the perforated plate 8 are discharged into the carrier 15 by its own weight. Then, the rotational moment of the lever 7 due to the weight of chips is eliminated, and the lever immediately returns to its normal position as shown in the figure, where it is supported by the stopper 12 due to the rotational moment caused by the weight 11, and the chips discharged from the discharge port 5a are removed. begins to accumulate.

In the illustrated embodiment, the saucer 6 in the normal position
The reason why the upward slope of the bottom plate is made larger than that of the perforated plate 8 is to increase the velocity of the liquid flow on the bottom plate of the saucer, and to minimize the counterclockwise rotational moment of the lever 7 due to the weight of the cutting liquid. This is to reduce as much as possible the amount of liquid flowing back into the transport vehicle 15 from the saucer 6 when the lever is rotated to the position A shown by the chain line.

According to the present invention, simply by disposing a lever-type scale mechanism equipped with a saucer whose upper end is closed with a perforated plate and a liquid receiving gutter or container below the discharge port at the upper end of the trough,
By using the gravitational energy of the sediment and liquid discharged from the discharge port, it is possible to not only collect the discharged liquid to the extent that the liquid does not leak into the passages and roads within the factory when transporting the discharged sediment, but also to It is possible to prevent contamination of passages, etc. by liquid, and the device of the present invention can be easily installed in an existing sedimentation tank.

[Brief explanation of the drawing]

1 is a vertical side view, FIGS. 2 and 3 are XX and YY sectional views of FIG. 1, respectively, and FIG. 4 is a Z-Z sectional view of FIG. 1. 1...Sedimentation tank, 2...Scraper conveyor, 5
...Trough, 5a...Discharge port, 6...Saucer, 7...
... Lever, 8 ... Perforated plate, 9 ... Lever pivot shaft,
10... Bearing, 11... Weight, 12... Stopper, 13... Liquid receiving gutter, 15... Chip transport vehicle.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A sedimentation tank equipped with a conveyor trough at one end for discharging bottom sediment out of the tank, which has a receiving tray in the front half whose upper end is covered with a perforated plate, and a heavy weight at the rear end. The part of the lever to which the weight is attached is pivoted to the trough so that the part near the front of the center of gravity is pivoted to the trough so that the tray can swing up and down below the discharge port at the upper end of the trough, and the lever is stopped at a normal position slightly raised forward. A stopper is attached to the trough side, and the end of the lever pivot shaft side of the saucer in the normal position is opened downward, and a liquid receiving gutter or container is placed directly under the opening, and the lever is tilted so that the sediment on the perforated plate can fall. A device for separating a liquid from a precipitate, characterized in that it is arranged so as not to interfere with the flow of water. (2) In the apparatus for separating liquid from sediment as described in claim (1) of the utility model registration, the upward slope of the saucer bottom plate in the normal position is greater than the upward slope of the perforated plate.