JP3326814B2 - Coolant processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling liquid processing apparatus for cooling and lubricating a sliding portion of a machine tool or the like. And a cooling liquid processing apparatus for obtaining a clean cooling liquid.

[0002]

2. Description of the Related Art Conventionally, a cooling liquid processing apparatus described in Japanese Patent Application Laid-Open No. 59-73068 is known.

[0003] This conventional cooling liquid processing apparatus is of a type that separates and collects foreign substances in a cooling liquid (hereinafter referred to as dirty coolant) contaminated by foreign substances by centrifugal separation. It has an upper cone and a lower cone that repeats normal rotation and reverse rotation in order.In the normal rotation, the upper and lower cones are kept in a joined state, and foreign matter is separated from dirty coolant by centrifugal action based on rotation of the lower cone. Then, by the centrifugal force based on the rotation of the upper and lower cones, it is retained on the inner surface of the upper and lower cones, deposited, and at the time of reverse rotation,
While keeping the upper and lower cones separated, centrifugal force based on the rotation of the upper and lower cones causes foreign matter in the sedimentary layer to move upward and downward.
It is configured to be scattered outside through a gap between the lower cones and collected.

[0004]

However, in the above-mentioned conventional cooling liquid processing apparatus, the rotation speed is low at least during the period when the upper cone and the lower cone are shifted from the normal rotation state to the reverse rotation state, so that the centrifugal separation operation is performed. Cannot be effectively exerted, and therefore, there is a problem that continuous processing cannot be performed by continuously introducing dirty coolant from outside.

[0005] It is an object of the present invention to solve the above-mentioned problems and to provide a cooling liquid processing apparatus capable of continuous processing.

In order to solve such a problem, a cooling liquid processing apparatus according to the present invention is provided in a conical shape which is joined to and separable from each other in a vertical direction, and continuously rotates in one direction about a vertical axis. A rotating plate that is horizontally disposed in a centrifuge chamber formed by an upper cone and a lower cone, and the upper cone and the lower cone, and receives a cooling liquid containing foreign substances continuously introduced from the outside on an upper surface thereof. , The center on the top
A slope that gradually descends toward the periphery
A rotating plate , collecting means for collecting foreign matter scattered outside through a gap formed when the upper cone and the lower cone are separated, and formed at a lower portion of the lower cone. Collecting means for collecting the coolant from which the foreign matter has been removed through the opening.

[0007]

When the upper and lower cones are held in a joined state, foreign matter in the coolant containing foreign matter continuously introduced from the outside is separated by the centrifugal action of the rotating plate. , And is scattered on the inner surface of the lower cone, and is deposited on the inner surface of the upper and lower cones by the centrifugal force based on the rotation of the upper and lower cones and deposited.

[0008] Thereafter, the upper and lower cones are shifted from the joined state to the separated state, and foreign matters in the sedimentary layer are scattered outside through a gap between the upper and lower cones by centrifugal force based on rotation of the upper and lower cones. . The foreign matter scattered outside is collected by the collecting means.

During this time, the rotating plate is still rotating, the foreign matter is separated by the centrifugal action of the rotating plate, and the coolant from which the foreign matter has been removed is recovered by the recovery means through the opening of the lower cone.

Thereafter, the above series of processing is repeated.

Therefore, according to the present invention, as in the prior art,
It is not necessary to shift the upper and lower cones from the forward rotation state to the reverse rotation state in order to shift the upper and lower cones from the joined state to the separated state, thereby enabling continuous processing.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows a cooling liquid processing apparatus according to this embodiment.
As shown conceptually in FIG. 1, a foreign substance 3 is separated from a dirty coolant 2 discharged from a grinding machine 1 or the like, and a coolant (hereinafter, referred to as a clean coolant) 4 from which the foreign substance 3 has been removed.
This is a cooling liquid processing device for returning the clean coolant 4 to the grinding machine 1 and the like, and is a type of a cooling liquid processing device for separating the foreign substances 3 in the dirty coolant 2 by a centrifugal separation action.

As shown in FIG. 1 as a specific configuration diagram of the main part of this cooling liquid processing apparatus, a conical upper cone 5 located on the upper side and a conical lower cone 6 located on the lower side are provided. Is provided.

An opening 7 is formed above the upper cone 5. The opening 7 has a dirty coolant introduction pipe 8 connected to a dirty coolant discharge side of the grinding machine 1 or the like.
Is inserted so that the dirty coolant 2 can be introduced into the upper cone 5 from above.

A bearing 9 is provided on the outer peripheral surface of the opening 7.
Are fixed, and the outer ring of the bearing 9 is fixed to a fixing plate 10. Further, a gear 11 is fixed to the outer peripheral surface of the opening 7, and this gear 11 meshes with another gear 13 (FIG. 3) connected to the output shaft side of a rotary drive source 12 (FIG. 3) such as a motor. . Therefore, the upper cone 5 receives the driving force from the rotary drive source 12 and is rotatable about a vertical axis.

A rotary plate 14 is installed horizontally inside the upper cone 5. Specifically, the rotating plate 14 is fixed to the upper cone 5 by a suitable attaching means 15 so as to be located below the dirty coolant introducing pipe 8. Therefore, the rotating plate 14 rotates integrally with the upper cone 5 and receives the dirty coolant 2 introduced through the dirty coolant introducing pipe 8 on its upper surface. At the center of the rotating plate 14, an inclined surface 16 is formed which gradually descends from the center to the peripheral edge so that the dirty coolant 2 can easily flow from the center of the rotating plate 14 to the peripheral edge. I have to.

On the other hand, an opening 17 is formed below the lower cone 6. An inner ring of a bearing 18 is fixed to an outer peripheral surface of the opening 17, and an outer ring of the bearing 18 is fixed to a movable plate 19 that can move in a vertical direction. Further, a gear 20 is fixed to the outer peripheral surface of the opening 17, and the gear 20 is connected to the rotation drive source 1 such as a motor.
2 meshes with another gear 21 (FIG. 3) connected to the output shaft side. Accordingly, the lower cone 6 receives a driving force from the rotary drive source 12 and is rotatable about a vertical axis, and is also movable in a vertical direction.

The rotary drive source 12 includes upper and lower cones 5 and 6.
Is a common rotary drive source 12. Then, the driving force of the rotary drive source 12 is increased and the gears 1 of the lower cones 5 and 6 are moved.
The power transmission mechanism for transmitting to the upper and lower cones 5, 20
6 are rotated in the same direction and at the same speed. The movable plate 19 holds the upper and lower cones 5 and 6 in a joined state when in the upper position,
On the other hand, when it is in the lower position, it is driven by a drive source 22 (FIG. 3) such as an air cylinder so as to keep the upper and lower cones 5 and 6 separated.

The annular opposing surfaces 23 of the upper and lower cones 5, 6
A foreign matter cover 25 is arranged on the outer peripheral side of the cover 24. The foreign matter cover 25 has an annular opening 2 on the facing surfaces 23 and 24 side.
6 and a clean coolant tank 27
(FIG. 3) is supported by appropriate support means 28 disposed thereon. The foreign matter cover 25 is connected to a foreign matter tank 30 (FIG. 3) via a foreign matter discharge pipe 29 (FIG. 3). Note that the other reference numeral 31 in FIG. 3 represents a pump. Further, the foreign matter cover 25, the foreign matter discharge pipe 29 and the foreign matter tank 30 are provided in the collecting means according to the present invention as the opening 1
7 and the clean coolant tank 27 correspond to the collecting means according to the present invention, respectively.

Next, the operation of the cooling liquid processing apparatus configured as described above will be described with reference to FIG.

First, the movable plate 19 is held at an upper position by a driving source 22 such as an air cylinder, and the upper and lower cones 5,
While maintaining the state of joining between the six, the rotary driving source 12 such as a motor is operated, and the upper cones 5 and 6 are rotated in the same direction and at the same speed (see FIG. 2A). Here, the rotation speed of the upper and lower cones 5 and 6 is, for example, 3000 to 4000 rpm.

In this state, the dirty coolant 2 discharged from the grinding machine 1 is continuously introduced into the centrifugal separation chamber 32 formed by the upper and lower cones 5 and 6 through the dirty coolant introducing pipe 8. I do.

The dirty coolant 2 introduced into the centrifugal separation chamber 32 propagates along the inclined surface 16 of the rotary plate 14 and spreads from the center to the peripheral portion. It is separated by the action and scatters toward the inner surfaces of the upper and lower cones 5, 6. Upper and lower cones 5, 6
The foreign matter 3 scattered on the inner surface of the upper and lower cones 5 and 6 stays on the inner surfaces of the upper and lower cones 5 and 6 by centrifugal force based on the rotation of the upper and lower cones 5 and 6. Then, as time passes, the foreign matter 3 is deposited on the inner surfaces of the upper and lower cones 5 and 6. On the other hand, the clean coolant 4 from which the foreign matter 3 has been removed passes between the peripheral surface of the rotating plate 14 and the inner surfaces of the upper and lower cones 5 and 6 and enters the lower clean coolant tank 27 by gravity.

Thereafter, when a predetermined amount of foreign matter 3 is deposited, the movable plate 1 is driven by a driving source 22 such as an air cylinder.
9 is lowered to a lower position, and the space between the upper and lower cones 5, 6 is shifted from the joined state to the separated state (see FIG. 2 (b)). When the upper and lower cones 5 and 6 shift to the separated state, a gap is formed between the opposing surfaces 23 and 24 of the upper and lower cones 5 and 6, and foreign matter 3 of the deposited layer passes through the gap. Are scattered to the outside by the centrifugal force based on the rotation of the lower cones 5, 6. The foreign matter 3 scattered to the outside enters the foreign matter cover 25 through the opening 26 of the foreign matter cover 25, and the foreign matter discharge pipe 2
After passing through 9, the liquid enters the foreign matter tank 30. During this time, the rotating plate 14 is still rotating due to the rotation of the upper cone 5, and the foreign matter 3 is separated by the centrifugal action. Further, the clean coolant 4 from which the foreign matter 3 has been removed passes between the peripheral surface of the rotating plate 14 and the inner surfaces of the upper and lower cones 5 and 6 in the same manner as when the upper and lower cones 5 and 6 are joined. Into the lower clean coolant tank 27 by gravity. Also,
Whether or not the predetermined amount of foreign matter 3 has been deposited is determined based on the lapse of a predetermined time determined based on experience. However, it does not exclude that an appropriate detector is arranged in the centrifugal separation chamber 32 and the drive source 22 such as an air cylinder is automatically operated based on a detection signal of the detector.

When the foreign matter 3 in the centrifugal separation chamber 32 is removed, the lower cone 6 is moved up again to shift the upper and lower cones 5 and 6 from the separated state to the joined state. Make it work.

As described above, the cooling liquid processing apparatus according to this embodiment is arranged so as to be joined to and separable from each other in the vertical direction, and has a conical upper cone 5 that rotates continuously in one direction about the vertical axis. And a dirty coolant 2 which is horizontally installed in a centrifugal separation chamber 32 formed by the lower cone 6 and the upper cone 5 and the lower cone 6 and continuously introduced from the outside.
Plate 14, upper cone 5, lower cone 6
Collection means 25, 29, 30 for collecting foreign matter 3 scattered outside through a gap formed when the gap is in a separated state.
And collecting means 17, 2 for collecting the clean coolant 4 through an opening 17 formed in the lower part of the lower cone 6.
7 is provided.

When the upper and lower cones 5 and 6 are held in a joined state, the foreign substances 3 in the dirty coolant 2 continuously introduced from the outside are removed by the centrifugal action of the rotating plate 14. And scattered on the inner surfaces of the upper and lower cones 5 and 6 and retained on the inner surfaces of the upper and lower cones 5 and 6 by the centrifugal force based on the rotation of the upper and lower cones 5 and 6 to be deposited. Thereafter, the upper and lower cones 5 and 6 are moved from the joined state to the separated state, and the foreign substances 3 in the sedimentary layer are separated by the centrifugal force based on the rotation of the upper and lower cones 5 and 6. To the outside through The foreign matter 3 scattered to the outside is collected in a foreign matter tank 30 via a foreign matter cover 25 and a foreign matter discharge pipe 29.

In the meantime, the rotating plate 14 is still rotating, and the foreign matter 3 is separated by the centrifugal action of the rotating plate 14, and the clean coolant 4 from which the foreign matter 3 has been removed is transferred to the clean coolant tank 27 through the opening 17. Collected. Thereafter, the above series of processing is repeated.

Therefore, according to this embodiment, the upper and lower cones 5, 6 are changed from the normal rotation state to the reverse rotation state in order to shift the upper and lower cones 5, 6 from the joined state to the separated state, as in the prior art. This eliminates the need for shifting, and the continuous processing can be performed by continuously introducing the dirty coolant 2.

In the above embodiment, the upper and lower cones 5,
Raise the lower cone 6 to join and separate the 6
Although it is lowered, the upper cone 5 may be raised and lowered instead of the lower cone 6, or both the upper and lower cones 5 and 6 may be moved to perform joining and separation. Good. Further, in the above embodiment, the rotating plate 14 is fixed to the upper cone 5, but may be fixed to the lower cone 6 instead of the upper cone 5. The rotating plate 14 may be supported from inside the tank 27 so as to be able to rotate independently of the rotation of the upper and lower cones 5 and 6. Further, it goes without saying that the shapes of the upper and lower cones 5 and 6 are not limited to the shape of the above embodiment. In addition, the inclined surface 16 of the rotating plate 14 is not always indispensable.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a cooling liquid processing apparatus according to an embodiment.

FIG. 2 is a cross-sectional view for explaining the operation of the apparatus.

FIG. 3 is a conceptual overall configuration diagram of the apparatus.

[Explanation of symbols]

 2 Coolant containing foreign matter (dirty coolant) 3 Foreign matter 5 Upper cone 6 Lower cone 14 Rotating plate 17 Opening 25, 29, 30 Collection means 17, 27 Collection means 32 Centrifuge chamber

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-65344 (JP, A) JP-A-59-73068 (JP, A) Fully open 1979-195452 (JP, U) Really open 1980 153147 (JP, U) JP-B 36-995 (JP, B1) JP-B 34-4655 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B04B 1/14

Claims (1)

(57) [Claims] 1. An upper cone and a lower cone, which are joined to and separable from each other in the vertical direction so that they can be joined and separated from each other, and are continuously rotated in one direction about a vertical axis. that centrifugation is placed horizontally in a room, a rotary plate for receiving a cooling liquid containing the foreign matters coming is continuously introduced from the outside at the upper surface, the upper
Gently descending from the center to the periphery
A rotating plate on which an inclined surface is formed; a collecting means for collecting foreign matter scattered outside through a gap formed when the upper cone and the lower cone are separated; and A collecting means for collecting, via an opening formed in a lower part, the cooling liquid from which foreign matter has been removed, a cooling liquid processing apparatus comprising: