JP3644721B2 - Separation device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a simple separation device used for removing solid impurities from a liquid containing metal shavings and the like.
[0002]
[Prior art]
In general, lubricating oil used in a polishing machine or a grinding machine is recovered after use and reused. However, since the recovered stock solution such as lubricating oil contains a large number of metal particles and other impurities such as metal shavings, filtration must be performed to remove these metal particles and the like from the stock solution. Conventionally, a filtration device incorporating a filter paper element with good filtration efficiency and a filtration device incorporating a magnet separator have been used for the filtration.
[0003]
[Problems to be solved by the invention]
However, these filtration devices have a complicated structure and are not easily repaired, and require time for disassembly and assembly. In addition, production costs are high. Therefore, for example, as shown in FIG. 4, the stock solution supply port 2 is provided on the integral side of the horizontal casing 1, the discharge port 3 is provided on the other end side, and a plurality of partition plates 4 are provided in parallel therebetween, so that the stock solution is supplied. Some simple separators that are applied to the partition plate 4 while flowing solid impurities such as metal scraps downward while removing the purified liquid from the downstream discharge port 3 have been put into practical use. . Reference numeral 5 denotes an outlet for taking out impurities and the like deposited on the bottom. However, this type of separation apparatus has a problem that the separation performance is not enough, and that it takes time and effort to take out impurities and the like accumulated on the bottom of the casing 1, and the solution to this problem is solved. It is strongly desired.
[0004]
The present invention has been made in view of such circumstances, and provides an excellent separation apparatus that is excellent in the separation performance of solid impurities and can easily remove deposits despite its simple structure. Is the purpose.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a tank provided with a stock solution supply port for supplying a stock solution on one side and a liquid discharge port for taking out a liquid after impurity separation on the other side. Is fixed to the inner wall of the tank, and the funnel-shaped partition plate A whose inner peripheral edge is wide open at the center is provided at predetermined intervals in the vertical direction, the outer peripheral edge forms a certain gap with the tank inner wall, and the inner peripheral edge is at the central part. A small opening funnel-shaped partition plate B is provided at predetermined intervals in the vertical direction so as to alternate with the partition plate A, and each central opening formed by the inner peripheral edge of the partition plate B is suspended from the upper part of the tank. A separation device that is closed at once by a plurality of plugs arranged at predetermined intervals in the vertical direction or is opened at once is a first gist, and a stock solution supply port for supplying a stock solution to one side is provided. Setting On the other hand, in the tank provided with a liquid discharge port for taking out the liquid after separation of impurities, a funnel-shaped partition plate A in which the outer peripheral edge is integrally fixed to the inner wall of the tank and the inner peripheral edge is largely opened at the central portion is provided in the tank. A funnel-shaped partition plate B which is provided at predetermined intervals in the vertical direction and whose outer peripheral edge forms a certain gap with the inner wall of the tank and whose inner peripheral edge opens small at the central portion is predetermined in the vertical direction so as to alternate with the partition plate A. Each central opening provided at intervals and formed by the inner peripheral edge of the partition plate B is closed by a conical rubber plug attached downward to each opening edge, and the rubber plug includes A separating device in which a plurality of slits are formed radially from the apex of the cone is a second gist.
[0006]
[Action]
That is, in the separation apparatus of the present invention, two types of special partition plates A and B are alternately provided in the tank, so that the stock solution introduced into the tank from one side of the tank is supplied along the partition plates A and B. The solid impurities mixed with the stock solution are repeatedly moved upward while being concentrated from the outer peripheral side to the central side and moved upward while being diffused from the central side to the outer peripheral side, and taken out from the other outlet of the tank. Etc. are applied to the partition plates A and B, and are deposited around the opening of the partition plate B closed by the stopper at the center of the tank. Therefore, when removing the deposit, in the first apparatus of the present invention, the opening of the partition plate B is opened by opening the plugs in a lump, and the deposit is placed below the opening. It can be dropped and removed easily. Further, in the second apparatus of the present invention, when a certain amount of deposit accumulates in the concave portion of the downwardly conical rubber stopper, the radial slit of the stopper is opened by the weight of the deposit, and the deposit is in the lower part of the tank. This deposit can be easily taken out and removed from the bottom of the tank. In addition, as described above, since the stock solution moves while repeating concentration and diffusion in the tank, not only the contact area between the moving stock solution and the partition plate increases, but also the stock solution overflows in an annular shape from the outer peripheral edge of the partition plate B. Since it flows, it has the advantage that the separation efficiency is higher than that of the conventional apparatus.
[0007]
Next, the present invention will be described in detail based on examples.
[0008]
【Example】
FIG. 1 shows a longitudinal section of an embodiment of the present invention. In the figure, reference numeral 10 denotes a bowl-shaped substantially cylindrical tank, the bottom portion of which is formed in a tapered shape that is narrowed down toward the bottom, and a deposit outlet 11 is formed at the narrowed lower end portion. Is formed. The outlet 11 is closed when the separation operation is performed, and is opened when the deposit is removed after the separation operation. A stock solution supply port 12 for supplying a stock solution is provided at the lower side of the side surface of the tank 10, and a liquid discharge port 13 for taking out the liquid after impurity separation is provided on the ceiling surface of the tank 10.
[0009]
In the tank 10, two types of partition plates A and B that partition the tank 10 in the vertical direction at predetermined intervals are alternately provided at predetermined intervals. The partition plate A has a funnel shape in which the outer peripheral edge is integrally fixed to the inner wall of the tank 10 and the inner peripheral edge is largely open at the center. In addition, the partition plate B has a funnel shape in which the outer peripheral edge forms a certain gap with the inner wall of the tank 10 and the inner peripheral edge is opened small at the center. In addition, this partition plate B is being fixed to the said partition plate A via the rib (not shown) arrange | positioned at predetermined intervals.
[0010]
Each central opening 16 formed at the inner peripheral edge of the partition plate B is collectively closed by a plurality of plugs 18 suspended from the upper part of the tank 10 via suspension bars 17 at a predetermined interval. Yes. Each plug 18 has a cylindrical shape at the lower part and a conical shape at the upper part, and closes each opening 16 by fitting the cylindrical part to the inner peripheral edge of the partition plate B. The suspension bar 17 is lifted and held at a certain height by a diaphragm 19 mounted in a space protruding from the center of the ceiling of the tank 10.
[0011]
Using this separation device, impurities can be separated from a stock solution containing impurities such as metal shavings as follows. That is, first, the stock solution is introduced into the tank 10 from the stock solution supply port 12. The introduced stock solution descends while concentrating on the center side of the tank 10 along the lower surface of the lowermost partition plate A as shown by the arrow, and then on the upper surface of the partition plate A and the lower surface of the partition plate B. It rises while diffusing to the outer peripheral side, overflows inward from the outer peripheral edge of the partition plate B, and descends while concentrating again on the center side. The stock solution gradually moves above the tank 10 while repeating this. During this time, the impurities (usually metal scraps) 20 in the undiluted solution have a higher specific gravity than the liquid, so they settle along the inclined surfaces of the partition plates A and B and gather on the center side, and the openings 16 of the partition plate B as shown in the figure. Deposit on the periphery. On the other hand, the liquid that has been purified by the sedimentation and removal of impurities finally flows out from the liquid discharge port 13. In this way, impurities can be separated from the stock solution.
[0012]
Then, when the deposit is deposited to some extent in the center, the supply of the stock solution is stopped, the stock solution supply port 12 and the liquid discharge port 13 are closed, and the deposit outlet 11 is opened. As a result, the stock solution remaining in the tank 10 is removed from the outlet 11 and the inside of the tank 10 becomes negative pressure. Therefore, as shown in FIG. The diaphragm 19 is inverted and recessed into a concave shape, and the entire suspension rod 17 is lowered by a certain distance, and the plugs 18 closing the openings 16 of the partition plate B are removed at once. As a result, the deposit 20 deposited around each plug 18 falls together with the stock solution remaining in the tank 10 downward from each opening 16 and is taken out and removed downward from the deposit outlet 11. Then, by pulling up the suspension rod 17 again, the openings 16 can be closed together with the plug 18 and the stock solution can be supplied to resume the separation operation.
[0013]
As described above, according to the above-described apparatus, the deposit 20 can be easily removed by simply performing the separation operation and periodically interrupting the operation and opening the outlet 11 at the bottom of the tank 10. Can be removed. Moreover, in the above apparatus, the stock solution moves in the tank 10 while repeatedly concentrating on the center of the tank 10 and diffusing to the outer peripheral side, so that the contact area between the moving stock solution and the partition plates A and B increases. Since the undiluted solution overflows in an annular shape from the outer peripheral edge of the partition plate B, there is an advantage that the separation efficiency is higher than that of the conventional apparatus.
[0014]
In the above embodiment, the shape of the tank 10 is set to a substantially cylindrical shape, but it may be set to a rectangular tube shape. And according to the shape, the shape of partition plates A and B and plug 18 can also be set up suitably.
[0015]
In the above embodiment, the diaphragm 19 is used as a mechanism for removing the plug 20 from the opening 16 in order to remove and remove the deposit 20. An appropriate mechanism such as a combined mechanism or a forced lifting mechanism using a cylinder can be used.
[0016]
Further, in the above embodiment, the partition plates A and the partition plates B are alternately provided one by one. However, it is not always necessary to alternately provide the partition plates one by one. For example, the two partition plates A are continuously arranged. Then, one partition plate B may be disposed next, and this may be repeated, or one partition plate B or two partition plates B may be disposed with respect to the three partition plates A. Also good. That is, the number of the partition plates A and B that are alternately arranged can be set as appropriate.
[0017]
In addition, although the material of the tank 10, the partition plates A and B, and the plug body 18 is not specifically limited, stainless steel is usually used.
[0018]
FIG. 3 shows a longitudinal section of another embodiment of the invention. That is, in this apparatus, the plug body 18 that closes each opening 16 of the partition plate B is not hung from above and opened and closed all at once as in the above embodiment, but at the opening edge of each opening 16 downward. A conical rubber plug body 21 is attached to and closed. However, the rubber plug 21 has a plurality of slits 22 formed radially from the apex of the conical shape. If deposits accumulate in the recesses of the plug body 21 to some extent, the slits are caused by the weight of the deposits. 22 opens, and the deposit falls near the deposit outlet 11 in the lower part of the tank 10 so as to be concentrated in a concentrated manner. Therefore, the deposit can be easily taken out and removed by opening the deposit outlet 11. And this apparatus also has high separation efficiency like the apparatus of the said Example.
[0019]
【The invention's effect】
As described above, in the separation apparatus of the present invention, by providing two types of special partition plates A and B alternately in the tank, the stock solution introduced into the tank from the lower part of the tank is supplied to the partition plates A and B. Along the center of the tank from the outer periphery to the center, and repeatedly moving it upward while diffusing from the center to the outer periphery. The mixed solid impurities and the like are applied to the partition plates A and B, and are deposited around the opening of the partition plate B closed by the stopper at the center of the tank. Therefore, when removing the deposit, in the first apparatus of the present invention, the plug body is opened at once to open the opening of the partition plate B, and the deposit is placed below the opening. It can be dropped and removed easily. Further, in the second apparatus of the present invention, when a certain amount of deposit accumulates in the concave portion of the downwardly conical rubber stopper, the radial slit of the stopper is opened by the weight of the deposit, and the deposit is in the lower part of the tank. This deposit can be easily taken out and removed from the bottom of the tank. In addition, as described above, since the stock solution moves while repeating concentration and diffusion in the tank, not only the contact area between the moving stock solution and the partition plate increases, but also the stock solution rises while diffusing and the partition plate B Since it overflows from the outer peripheral edge, it has an advantage that the separation efficiency is higher than that of the conventional apparatus.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
FIG. 2 is an operation explanatory diagram of deposit removal in the embodiment.
FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention.
FIG. 4 is a longitudinal sectional view showing an example of a conventional separation device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Tank 11 Deposit outlet 12 Stock solution supply port 13 Liquid discharge port 16 Opening 17 Suspension rod 18 Plug body 19 Diaphragm A, B Partition plate

Claims (2)

In a tank provided with a stock solution supply port for supplying a stock solution on one side and a liquid discharge port for taking out the liquid after impurity separation on the other side, the outer peripheral edge is integrally fixed to the inner wall of the tank and the inner peripheral edge is a central portion in the tank. The funnel-shaped partition plate A having a large opening is provided at predetermined intervals in the vertical direction, the outer peripheral edge forms a certain gap with the inner wall of the tank, and the inner peripheral edge has a small opening at the center portion. A plurality of plugs are provided at predetermined intervals in the vertical direction so as to alternate with the plate A, and each central opening formed at the inner peripheral edge of the partition plate B is suspended from the upper part of the tank and arranged at predetermined intervals in the vertical direction. Separation device characterized in that it is closed at once or is opened at once. In a tank provided with a stock solution supply port for supplying a stock solution on one side and a liquid discharge port for taking out the liquid after impurity separation on the other side, the outer peripheral edge is integrally fixed to the inner wall of the tank and the inner peripheral edge is a central portion in the tank. The funnel-shaped partition plate A having a large opening is provided at predetermined intervals in the vertical direction, the outer peripheral edge forms a certain gap with the inner wall of the tank, and the inner peripheral edge has a small opening at the center portion. Each central opening formed at the inner peripheral edge of the partition plate B is provided with a conical rubber plug attached downward to each opening edge so as to alternate with the plate A in a vertical direction. A separating device, wherein the rubber plug is formed with a plurality of slits radially from a conical apex.

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