JPH08126935A - Separating device for chip - Google Patents

Abstract

PURPOSE: To obtain a separating device for chips, etc., which can keep high the filtration efficiency of liq. by means of a cylindrical filter by enabling the separation of the chips, etc., stuck to the outer surface of a cylindrical filter without leaving in a filtration hole. CONSTITUTION: A cylindrical filter 2 is placed with its shaft line horizontally directed and made rotatable by means of a support shaft 6a and a pipe support shaft 6b in a separating tank 1 for housing a liq. such as solid-mixed cutting oil. Provided is a cleaning tank 18 for receiving, via the pipe support shaft 6b, a cleaning soln. passed through the cylindrical filter 2 from its outer surface toward its inner part. A nozzle pipe 19 having an upwardly facing nozzle 19a is placed in the cylindrical filter 2 by penetrating through from the cleaning tank 18 toward the pipe support shaft 6b to enable the exhaust of the cleaning soln. from the nozzle 19a by means of a pump 20. The upper side part of the cylindrical filter 2 is exposed from the liq. level housed in the separating tank 1. The cleaning soln. exhausted from the nozzle 19a collides with the upper side part of the cylindrical filter 2 exposed from the liq. to pass through a filter hole, separating a solid stuck on the outer surface of the cylindrical filter 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid material such as cutting powder or grinding powder mixed in a liquid such as cutting oil or grinding oil supplied to a cutting part or a grinding part in a metal cutting device or a grinding device. A device for separating from a liquid.

[0002]

2. Description of the Related Art As a device for separating cutting powder or solids of grinding powder mixed in a liquid such as cutting oil or grinding oil used in a metal cutting device or a grinding device, for example, Jikkei 4-33.
The one disclosed in Japanese Patent No. 929 is known. In this device for separating cutting powder, a cylindrical filter made of a perforated plate is rotatably attached to a support shaft made of a pipe, and the support shaft is fixed to both side walls of the separation tank in a erected manner so that the cylindrical filter is It is rotatably arranged inside. On the support shaft,
An introduction hole for the liquid that has passed through the cylindrical filter is provided. An outer surface scraper for separating solid matter such as cutting powder adhered to the outer surface of the cylindrical filter is arranged on the outer surface of the cylindrical filter, and the inner surface scraper is also arranged on the inner surface of the cylindrical filter by being attached to the support shaft. On both sides of the separation tank, there are endless chains that move from the bottom to the mouth, and the cutting powder that settles at the bottom of the separation tank is transferred to the outside scraper. Are installed in a erected manner.

The cutting powder separation device supplies and stores a liquid such as cutting oil used in a metal cutting device into a separation tank and positions the entire cylindrical filter in the liquid. Then, the cutting oil or the like supplied to the separation tank passes through the cylindrical filter from the outer periphery to the inside, flows into the support shaft from the introduction hole provided in the support shaft, and flows in the support shaft to flow from the separation tank. It is taken out and returned to the metal cutting device or the like to be used again. On the other hand, cutting powder mixed in the liquid adheres to the outer peripheral surface of the cylindrical filter and is separated from the liquid that has passed through the cylindrical filter.

The cutting powder and the like adhering to the outer peripheral surface of the cylindrical filter are scraped off by the outer surface scraper arranged on the outer surface of the cylindrical filter by the rotation of the cylindrical filter. The cutting powder separated from the cylindrical filter settles at the bottom of the separation tank, and is carried out by the carry-out scraper to the outside of the separation tank. As described above, when the outer surface scraper removes the cutting powder and the like adhering to the outer surface of the cylindrical filter, a part of the cutting powder passes through the filtration hole of the cylindrical filter and enters the inside of the cylindrical filter to adhere. Occurs. The inner surface scraper provided inside the cylindrical filter removes the cutting powder and other substances adhering to the inner surface of this cylindrical filter.A small amount of cutting powder separated by this inner surface scraper flows out from the spindle together with a liquid such as cutting oil. To return to metal cutting equipment.

[0005]

SUMMARY OF THE INVENTION The conventional separation device for cutting powder or the like has an outer surface in which cutting powder or the like separated from a liquid such as cutting oil and attached to the outer peripheral surface of the cylindrical filter is arranged on the outer surface of the cylindrical filter. Scraped off and separated. Therefore, when the outer surface scraper removes the cutting powder and the like adhering to the outer surface of the cylindrical filter, a part of the cutting powder and the like passes through the filter hole of the cylindrical filter and adheres to the inner surface thereof. Therefore, it is necessary to provide an inner surface scraper inside the cylindrical filter, and a small amount of cutting powder separated from the inner surface of the cylindrical filter is not separated from the liquid, but flows out of the separation tank together with the liquid. is there. In addition, the perforated plate that makes up the cylindrical filter is thin, but when separating the cutting powder etc. with the external scraper and the internal scraper attached from both sides of the porous plate, the filtering holes of the cylindrical filter are partially clogged with small cutting powder etc. Since there is a risk of remaining, the filtration efficiency of the liquid tends to decrease,
There is a problem that the labor required for the maintenance increases and the service life of the cylindrical filter becomes short.

The present invention is to solve the above problems and to separate solid matter such as cutting powder adhering to the outer surface of a cylindrical filter from the cylindrical filter without partially clogging the filter holes. It is an object of the present invention to provide a separating device for cutting powder or the like that enables the above to be maintained and keeps the filtration efficiency of the liquid by the cylindrical filter high.

[0007]

In a separating device for cutting powder and the like according to the present invention, a cylindrical filter is rotatably arranged in a separation tank by a pipe-shaped supporting shaft with its axis lined in a horizontal direction, and is supplied to the separation tank. A liquid containing solid materials such as cutting powder stored,
Passing the cylindrical filter from the outside to the inside, flowing out of the separation tank via the support shaft, in a separation device such as cutting powder for separating the solid matter with the cylindrical filter, the amount of liquid contained in the separation tank is A clean tank, which is set so as to always expose the upper portion of the cylindrical filter and which receives and stores a clean liquid that has passed through the cylindrical filter and is separated from the mixed solids, is housed in the clean tank. A nozzle for ejecting the generated clean liquid directs its ejection hole toward a portion of the cylindrical filter exposed from the liquid, and allows the clean liquid ejected from the ejection hole to pass through the portion of the cylindrical filter exposed from the liquid. It is characterized by being placed inside.

[0008]

The separating device for cutting powder and the like according to the present invention is used in a cutting device for aluminum and other metals to supply and store a mixed liquid such as cutting oil mixed with cutting powder in a separation tank,
And the cylindrical filter is rotated. At this time, the upper portion of the cylindrical filter is exposed from the liquid surface of the mixed liquid. Since the mixed liquid contained in the separation tank passes through the filtration hole of the cylindrical filter from the outer periphery to the inside to separate the mixed solid matter, and flows into the clean tank as a clean liquid through the pipe-shaped support shaft, The clean liquid in the clean tank is returned to the metal cutting device or the like for use.

The mixed solid matter separated from the mixed liquid adheres to the outer peripheral surface of the cylindrical filter and reduces the filtration efficiency thereof, so that the clean liquid in the clean tank is ejected from the nozzle arranged in the cylindrical filter. The clean liquid ejected from this nozzle collides with the upper portion of the cylindrical filter exposed from the liquid surface of the mixed liquid and passes through the filtration hole. Therefore, the mixed solids adhering to the outer peripheral surface of the cylindrical filter are separated from the outer peripheral surface of the cylindrical filter by the pressure of the clean liquid passing through each filtration hole, and flow down the outer surface of the cylindrical filter to separate from the cylindrical filter. , Or rotation of the cylindrical filter to enter the mixed solution and separate from the cylindrical filter.

As described above, since the clean liquid ejected from the nozzle passes through each filtering hole of the cylindrical filter, a part of the mixed solid separated from the outer peripheral surface of the cylindrical filter becomes clogged in each filtering hole. There is no fear, and each filter hole is cleaned with the clean liquid ejected from the nozzle to maintain high filtration efficiency. Further, the clean liquid ejected from the nozzle collides with the upper portion of the cylindrical filter exposed from the mixed liquid to pass through the filter hole. Therefore, the pressure of the clean liquid ejected from the nozzle can be made to act on the mixed solid matter adhering to the outer peripheral surface of the cylindrical filter without being influenced by the contaminated liquid in the separation tank, and adhere to the outer peripheral surface of the cylindrical filter. It is possible to reliably and efficiently separate the mixed solids.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a separating device for cutting powder and the like according to the present invention will be described with reference to FIGS. In the figure, 1 is a separation tank,
The end portion is bent upward so that the mixed solid matter precipitated at the bottom of the separation tank 1 can be taken out.
2 is a cylindrical filter, which has a relatively small diameter, for example 0.5
It is formed by forming a cylindrical porous metal plate such as stainless steel provided with a large number of filtration holes of about mm. 3a and 3b are circular closing plates, and connecting cylinders 4a and 4b projecting from one side of the circular closing plates are inserted into each end of the cylindrical filter 2 almost tightly, and each end of the cylindrical filter 2 is tightened with a tightening belt 5. Tighten parts to connect cylinder
It is fixed to 4a and 4b.

Reference numeral 6a denotes a solid support shaft fixedly provided on the outer surface of the central portion of the closing plate 3a, and 6b denotes a pipe formed of a pipe fixedly provided on the outer surface of the central portion of the closing plate 3b so as to penetrate through the closing plate 3b. On the spindle,
The support shaft 6a and the pipe support shaft 6b are connected to the side walls 1a and 1b of the separation tank 1.
The cylindrical filter 2 is rotatably supported in the separation tank 1 with its axis lined in the horizontal direction. Since the pipe support shaft 6b penetrates the closing plate 3b, the liquid that has passed through the cylindrical filter 2 from the outer periphery to the inside flows through the pipe support shaft 6b. The pipe support shaft 6b can be fixed to the peripheral side surface of the through hole of the closing plate 3b without being inserted into the through hole provided in the closing plate 3b.

Reference numeral 7 denotes a gear formed on the peripheral edge of the closing plate 3a, and 8
a and 8b are a pair of endless chains arranged along the inner surfaces of the side walls 1a and 1b from the bottom of the separation tank 1 to the upper side of the cylindrical filter 2. The chains 8a are engaged with the gear 7 in a mounting manner. , The cylindrical filter 2 is rotated as the chains 8a and 8b move. A bottom scraper 9 is fixedly protruded from the chains 8a and 8b in a erected manner and at intervals, and the scraper 9 conveys the mixed solids that have settled to the bottom of the separation tank 1 to separate the solid waste from the separation tank 1. It is configured to discharge from a discharge port 10 provided in an end bottom wall bent upward.

Reference numeral 11 denotes a pretreatment tank provided side by side with the side wall 1a as a partition wall. The pretreatment tank 11 also has an end bent upward and a discharge port (not shown) formed on the bottom wall thereof. Is provided to discharge the mixed solid matter separated from the liquid. Reference numeral 12 is a pre-filter horizontally disposed in the pre-treatment tank 11 above the liquid level supplied and stored in the pre-treatment tank 11. The front filter 12 is composed of a porous metal plate such as stainless steel having a large number of filtration holes having a diameter larger than that of the cylindrical filter 2, for example, about 2 mm. Reference numeral 13 denotes a pair of endless transport chains arranged in parallel above the front filter 12 with a space therebetween. A carrying scraper 14 for carrying out is attached. Reference numeral 15 is a liquid passage hole provided in the side wall 1a for allowing the liquid supplied to the pretreatment tank 11 to flow into the separation tank 1, and 16 is a liquid passage hole for reducing the volume of the pretreatment tank 11 and supplying the supplied liquid. 15
The slant plate attached to the bottom side of the pretreatment tank 11 in order to guide the pretreatment tank 11 to the separation tank 1 side, and 17 is a supply hole provided in the pretreatment tank 11 above the prefilter 12 from which solid matter is collected. A liquid such as mixed cutting oil is supplied to the pretreatment tank 11.

Reference numeral 18 is a clean tank provided side by side with the side wall 1b as a partition wall, and the clean tank 18 and the separation tank 1 communicate with each other through a pipe support shaft 6b. 19 is the pipe support shaft 6b
A nozzle pipe that is inserted horizontally from the clean tank 18 to the inside of the cylindrical filter 2 in the horizontal direction.
It is arranged such that a is directed upward and liquid ejected from the nozzle 19a collides with the upper part of the cylindrical filter 2 and can pass through the filter hole. 20 is the nozzle pipe
A suction pipe 20a of the pump connected to 19 is inserted into the liquid in the clean tank 18. 21 is a clean tank 18
It is a supply pump that supplies the clean liquid inside to a metal cutting device. 22a is a mixed liquid as a liquid such as cutting oil supplied by being used in a metal cutting device, 22b is a clean liquid in which mixed solids are separated from the mixed liquid 22a by passing through the cylindrical filter 2, and 22c is mixed. Liquid 22a and clean liquid 22b
The liquid surface of the cylindrical filter 2 is always exposed from the liquid surface 22c.

The separating device for the cutting powder and the like is a conveyor chain.
The conveying scraper 14 on the upper surface of the front filter 12 is advanced by driving 13 and the scraper 9 is advanced along the bottom surface of the separation tank 1 by driving the chains 8a, 8b, and the chain 8a is attached to the gear 7 on the peripheral surface of the closing plate 3a. Since they mesh with each other, each of the cylindrical filters 4 rotates. In this state, it is used in a metal cutting device or the like, and a mixed liquid such as cutting oil mixed with solid matter such as aluminum and other metal cutting scraps is supplied to the pretreatment tank 11 from the supply hole 17. Since this mixed liquid flows down onto the pre-filter 12, a mixed solid having a size that does not pass through the filter hole remains on the pre-filter 12, and the liquid and a small mixed solid pass through the pre-filter 12 and are pretreated. The mixed liquid 22a is stored in the tank 11. The mixed solid matter remaining on the front filter 12 is
The transport scraper 14 transports it, discharges it from the discharge port, and stores it in a container placed below it.

The mixed liquid 22a contained in the pretreatment tank 11 is a side wall.
It flows from the liquid passage hole 15 of 1a to the separation tank 1 and passes through the rotating cylindrical filter 2 from the outside to the inside. The mixed liquid 22a is separated into the clean liquid 22b and the mixed solid matter by passing through the cylindrical filter 2, the clean liquid 22b flows through the pipe support shaft 6b into the clean tank 18, and the mixed solid matter is filtered by the cylindrical filter 2 Some adhere to the outer peripheral surface of the. In this way,
The upper part of the cylindrical filter 2 is exposed from the liquid surface 22c of the mixed liquid 22a and the clean liquid 22b contained in the pretreatment tank 11, the separation tank 1 and the clean tank 18. The clean liquid 22b contained in the clean tank 18 is supplied to the metal cutting device or the like by driving the supply pump 21, and is repeatedly used. (

When the mixed solid substance adheres to the outer peripheral surface of the cylindrical filter 2 by the passage of the mixed liquid 22a, the filtration efficiency of the cylindrical filter 2 is lowered. Therefore, the pump 20 is continuously or intermittently driven to clean the tank 17. Part of the clean liquid stored in the nozzle is sent to the nozzle pipe 19 and ejected upward from the nozzle 19a. The clean liquid ejected from this nozzle 19a is
Since it collides with the inner surface of the upper portion of the cylindrical filter 2 exposed from 22c and passes through the filtration hole, the solid mixture adhering to the outer peripheral surface of the cylindrical filter 2 is separated and the mixed solid flows down to the liquid surface 22c. Let me do it. The mixed solids that have settled at the bottom of the separation tank 1 by separating from the cylindrical filter 2 are
The advancing scraper 9 is transferred along the bottom wall of the separation tank 1 and discharged from the discharge port 10.

As described above, since the clean liquid 22b is made to collide with and pass through the inner surface of the upper portion of the cylindrical filter 2 exposed from the liquid surface 22c, the nozzle 22 is not affected by the mixed liquid 22b in the separation tank 1. It is possible to cause the pressure of the clean liquid ejected from 19a to act on the mixed solid matter adhering to the outer peripheral surface of the cylindrical filter 2 to reliably separate the mixed solid matter from the cylindrical filter 2. And since it passes through each filter hole of the cylindrical filter 2, it is possible to reliably separate the mixed solid matter from the filter hole even when the mixed solid matter is clogged in the filter hole. It is possible to make the filter 2 always maintain a high filtration efficiency. Therefore, the labor required for the maintenance of the cylindrical filter 4 can be reduced, the period of use of the cylindrical filter 2 can be extended, and the cost required for separating the mixed solids can be reduced.

If a pretreatment tank 11 is provided for the separation tank 1 and relatively large solid matters are separated in advance by the prefilter 12 as in the above embodiment, it is easy to treat relatively large solid matters. Is. However, it is also possible to directly supply a liquid such as cutting oil used in a metal cutting device or the like to the separation tank 1 without providing the pretreatment tank 1. Separation tank 1
When the liquid is directly supplied to the separation tank 1, the liquid may be supplied to the separation tank 1 by providing a liquid supply hole in the side wall 1a thereof. Then, the separation tank 1 uses the side wall 1b as a partition.
If the clean tank 18 is provided, it is easy to make them communicate with each other by the rotating pipe support shaft 6b. However, it is also possible to separately provide the separation tank 1 and the clean tank 18 and allow them to communicate with each other through the pipe support shaft 6a. In this case, the pipe supporting shaft 6b fixedly projected to the closing plate 3b is attached to the separation tank 1
And the clean side wall of the clean tank 18 can be rotatably supported, but the pipe supporting shafts 6a are fixed to the side walls of the separating tank 1 and the clean tank 18 facing each other in an erected manner.
It is also possible to rotatably attach the closing plate 3b to the 6a to rotatably support the cylindrical filter 2.

In the above embodiment, the nozzle pipe 19 arranged in the cylindrical filter 2 is located in the liquid. However, the liquid level
It is also possible to arrange the nozzle pipe 19 at a position higher than the liquid surface 22c by lowering 22c or making the nozzle pipe 19 close to the cylindrical filter 2. In addition, the solid support shaft 6a and the pipe support shaft 6b, which are separately provided, are attached to the closing plate 3
It sticks to a and 3b. However, as in the conventional example,
Each of the closing plates 3a and 3b is rotatably attached to a support shaft made of a single pipe, and both ends of the support shaft are attached to side walls of the separation tank 1.
It is erected and fixed to 1a and 1b, and the end of the support shaft on the side of the closing plate 3a is closed. Then, the liquid in the cylindrical filter 2 can be caused to flow into the clean tank 18 through the inlet provided in the support shaft. In this case, the nozzle pipe 19 is inserted into the support shaft and placed in the cylindrical filter 2 through its inlet. The cylindrical filter 2 and the front filter 12 may be made of wire mesh. The cylindrical filter 2 is driven by the scraper 9
It is also possible to drive with a dedicated chain, etc., instead of using a and 8b.

[0022]

As described above, in the separating device for cutting powder of the present invention, the upper portion of the cylindrical filter having the axis lined in the horizontal direction is exposed from the liquid contained in the separating tank, and the cylindrical filter is A nozzle for ejecting a clean liquid that has passed through the inside from the outside and separated from the mixed solids is arranged inside the cylindrical filter so that the clean liquid ejected by the nozzle collides with the upper portion of the cylindrical filter exposed from the liquid. Through the filter holes. In this way, the liquid mixed with the solid matter is filtered to separate the mixed solid matter adhering to the outer peripheral surface of the cylindrical filter from the cylindrical filter by the pressure of the clean liquid ejected from the nozzle and passing through the filtration hole. And so on. Moreover, since the clean liquid ejected from the nozzle passes through the upper side of the cylindrical filter exposed from the liquid surface, the pressure of the clean liquid ejected from the nozzle is not affected by the liquid contained in the separation tank. It is possible to act on the mixed solid matter attached to the outer peripheral surface, and it is possible to reliably and efficiently separate the mixed solid matter from the cylindrical filter.

Further, since the clean liquid ejected from the nozzle passes through each of the filter holes of the rotating cylindrical filter, the filter holes do not remain in a state in which solid matters are clogged.
It is possible to maintain the state of penetrating all of the filtration holes. Therefore, since it is possible to maintain a high filtration efficiency in the cylindrical filter, the labor required for the maintenance of the cylindrical filter can be greatly reduced, and the useful life of the cylindrical filter can be lengthened. Therefore, it is possible to reduce the cost of separating the solid matter mixed with the liquid.

[Brief description of drawings]

FIG. 1 is a sectional front view of an embodiment.

FIG. 2 is a cross-sectional side view of the embodiment.

[Explanation of symbols]

1: Separation tank, 2: Cylindrical filter, 3a, 3b: Closure plate, 6a: Support shaft, 6b: Pipe support shaft, 18: Clean tank, 19: Nozzle pipe, 19a: Nozzle, 22a: Mixed liquid, 22b: Clean liquid,
22c: Liquid level.

Claims (1)

[Claims] 1. A cylindrical filter is rotatably arranged in a separation tank with a pipe-shaped support shaft with its axis lined in a horizontal direction, and a liquid mixed with solid matter such as cutting powder supplied and stored in the separation tank is Passing the cylindrical filter from the outside to the inside, flowing out of the separation tank via the support shaft, in a separation device such as cutting powder for separating the solid matter with the cylindrical filter, the amount of liquid contained in the separation tank is A clean tank, which is set so as to always expose the upper portion of the cylindrical filter and which receives and stores a clean liquid that has passed through the cylindrical filter and is separated from the mixed solids, is housed in the clean tank. A nozzle for ejecting the cleaned liquid directs its ejection hole toward a portion of the cylindrical filter exposed from the liquid, and the clean liquid ejected from the ejection hole is exposed from the liquid of the cylindrical filter. A separating device for cutting powder, etc., characterized in that it is arranged inside a cylindrical filter so that it can pass through the ejected portion.