JP2583763Y2 - Coolant supply device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coolant supply device used for a grinding machine, for example.

[0002]

2. Description of the Related Art As a coolant supply device for a grinding machine or the like, for example, a coolant supply system is provided in which coolant discharged from a processing section is filtered by a paper filter provided at an upper portion of a tank and supplied to the processing section again. A device has been proposed. Since the paper filter is relatively coarse to prevent clogging, sludge such as fine chips and abrasive particles that cannot be collected by the paper filter settles at the bottom of the tank. accumulate.

[0003]

Therefore, in such a coolant supply device, it is necessary to periodically remove the coolant in the tank and scrape off the sludge deposited on the bottom surface of the coolant. Has become.

[0004] In view of the above circumstances, an object of the present invention is to provide a coolant supply device that prevents sludge from accumulating on the bottom surface of a tank and improves workability.

In order to achieve the above object, according to the present invention, in a coolant supply device configured to supply coolant discharged from a processing section and filtered by a filter to the processing section again, the inside of a tank for storing coolant is provided. Vortex flow generating means for pumping the coolant and ejecting the coolant along the wall surface of the tank, and a suction port disposed close to the center bottom surface of the tank, and returning the coolant pumped from the suction port to the filter again. A circulation means for filtering was provided.

[0006]

The vortex generating means generates a vortex in the tank, the sludge settling in the tank is collected at the center of the bottom of the tank, and the collected sludge is returned to the filter by the circulation means and filtered. Prevents sludge from accumulating on the bottom of the tank.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. ◆ In the figure, 1 is a tank. 1a
Is a square, which is arranged above the tank 1 and receives the coolant discharged from the processing section. A mesh belt conveyor 2 is rotatably disposed above the tank 1 and is driven by a motor 3. Reference numeral 4 denotes a paper filter, which is rotatably supported above the tank 1 via a bracket 5, and is drawn out onto the mesh belt conveyor 2. 6 is a collection box,
It is arranged at one end of the tank 1. Reference numeral 7 denotes a float switch which is activated when a float 7a disposed above the tank 1 and located on the paper filter 4 rises by a predetermined amount.

A pump 8 is disposed above the tank 1 and supplies coolant from the tank 1 to a processing section via a pipe 9. Reference numeral 10 denotes a pump, which is disposed above the tank 1 and pumps coolant from the upper part of the tank 1,
Coolant is ejected along the lower wall surface of the tank 1 through the pipe 11 and the nozzle 12 to generate a vortex in the tank 1. Reference numeral 13 denotes a pump, which sucks coolant from a suction port 14 arranged close to the bottom of the center of the tank 1 and returns the coolant to the box 1a via a pipe 15.

With such a configuration, the coolant sent from the pump 8 and supplied to the processing section through the pipe 9 is:
It is collected in the box 1a and discharged onto the paper filter 4.

[0010] Of the chips and abrasives floating in the coolant discharged onto the paper filter 4, relatively large chips and abrasives are caught by the paper filter 4, and relatively small chips and abrasives are collected together with the coolant in the coolant tank. Add dropwise to 1. When the amount of chips and abrasive grains caught by the paper filter 4 increases, smaller chips and abrasive grains are captured, and clogging of the paper filter 4 advances, and smaller chips and abrasive grains can be captured. Coolant accumulates on the paper filter 4. Then, the float 7a rises and the float switch 7 is operated. When an operation signal of the float switch 7 is received, the motor 3 rotates for a certain period of time, moves the mesh belt conveyor 2, and discharges the portion of the paper filter 4 that has captured the chips and abrasive grains into the collection box 6, and discharges the paper filter 4. 4 is pulled out onto the mesh belt conveyor 2.

On the other hand, the pump 10 is operated, the coolant is ejected from the nozzle 12 to generate a vortex in the tank 1, and the sludge settled on the bottom surface of the tank 1 is swirled to form the sludge at the center and four corners of the tank 1. Sent to At this time, as shown in FIG. 3, if the four corners of the tank 1 are arcuate, the amount of sludge accumulated at the corners of the tank 1 can be reduced. At the same time, the pump 13 is operated,
The sludge collected in the center of the tank 1
The sludge in the coolant can be reduced by pumping together with the coolant from 4 and returning it to the box 1a through the pipe 15 and filtering again with the paper filter 4.

[0012]

As described above, according to the present invention, in a coolant supply device that discharges coolant from a processing section, is filtered by a filter, and supplies the coolant to the processing section again, the inside of the tank for storing the coolant is used. Equipped with vortex generating means for pumping the coolant and jetting the coolant along the wall of the tank, and a suction port arranged close to the center bottom surface of the tank, and returning the coolant pumped from the suction port back to the filter and filtering the coolant. Since the circulation means is provided, sludge can be prevented from being deposited on the bottom surface of the tank, and workability can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a coolant supply device according to the present invention.

FIG. 2 is a front view of the coolant supply device according to the present invention.

FIG. 3 is a plan view showing a state inside the tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank 2 Mesh belt conveyor 4 Paper filter 10 Pump 11 Pipe 12 Nozzle 13 Pump 14 Suction port 15 Pump

Claims (1)

(57) [Scope of request for utility model registration] 1. A coolant supply device configured to supply coolant discharged from a processing section and filtered by a filter to the processing section again, pumps up a coolant in a tank storing the coolant, and moves the coolant along a wall surface of the tank. Vortex flow generating means for jetting out coolant, and a circulating means for providing a suction port disposed close to the center bottom surface of the tank and returning the coolant pumped from the suction port back to the filter for filtration. Coolant supply device.