JP2003225660A - Floating material body recovering apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floating material body recovering apparatus by which a material body, such as liquid like oil matter, etc., or solid like dust, waste, etc., floating on the upper layer part of a liquid such as spent coolant is efficiently recovered. <P>SOLUTION: The apparatus for recovering the material body floating on the upper part of the liquid is equipped with an apparatus main body 2 formed in the shape of a cylinder having a bottom with a bottom part 5 and a circumferential wall part 6 and having a window opening part 7 on the circumferential wall part 6, a float 3 formed in the shape of cylinder with a material having smaller specific gravity than the liquid, arranged vertically movable along the inner circumferential surface of the circumferential wall part 6 in the apparatus main body 2, and having a notched part 8 for introducing the liquid and the material body through the window opening part 7 of the apparatus main body 2, and a suction pipe line 4 for discharging which is fixed to the apparatus main body 2 and has a suction port 11 at a lower position than that of the notched part 8 of the float 3 of the apparatus main body 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for collecting an object such as another liquid or solid floating on the upper layer of a liquid. For example, a device for separating an oil component mixed in an aqueous coolant such as cutting fluid. Used for.

[0002]

2. Description of the Related Art For example, in cutting or grinding of machine tools, water-based coolant is used as cutting fluid or grinding fluid. Since the cooling function, which is the function of the coolant, deteriorates, causing environmental pollution or producing a bad odor due to spoilage of the coolant, it is necessary to separate and collect the oil component of the used coolant. As a device for separating and recovering the oil content of the used coolant, various oil content recovery devices that utilize the difference in specific gravity of oil and water have been proposed, but in the conventional device, it takes a considerable time to separate the oil content. It took time and was inefficient.

In view of the above problems, the present invention provides a floating object recovery device capable of efficiently recovering an object floated on the upper layer of a liquid such as a used coolant, that is, a liquid such as oil or a solid such as dust or scrap. The purpose is to do.

[0004]

A levitated object recovery apparatus according to the invention of claim 1 is an apparatus for recovering an object levitated above a liquid, and is formed by a bottom portion 5 and a peripheral wall portion 6 into a bottomed tubular shape. The device main body 2 having the window opening 7 in the peripheral wall 6 and the material formed of a material having a smaller specific gravity than the liquid are formed into a tubular shape, and vertically moved in the device main body 2 along the inner peripheral surface of the peripheral wall 6. A float 3 having a cutout 8 for allowing liquid and an object to be introduced through the window opening 7 of the device body 2 at an upper end thereof, and a float 3 fixed to the device body 2 in the device 3. And a suction pipe line 4 for discharge having a suction port at a position lower than the cutout portion 8.

According to a second aspect of the present invention, in the floating object collecting apparatus according to the first aspect, the apparatus main body 2 and the float 3 are each formed in a cylindrical shape, and the notch portion 8 of the float 3 has guide protrusions 9 on both left and right sides thereof. , 9 are provided, and both guide protrusions 9, 9 are provided.
Is guided by the left and right side edge portions 7a, 7a of the window opening 7 formed in a rectangular shape on the peripheral wall portion 6 of the apparatus main body 2, and is vertically moved by the upper and lower end edges 7b, 7c. It is characterized by being limited within the range.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an external front view of a floating object recovery device 1 according to the present invention, FIG. 2 is a vertical sectional front view of the recovery device 1, and FIG. 3 is a state in which a liquid is introduced into the recovery device 1. 4 is a vertical cross-sectional front view of FIG. 4, FIG. 4 is a vertical cross-sectional side view of the recovery device 1 with a liquid introduced therein, and FIG. 5 is an exploded perspective view of the recovery device 1. As can be seen from these figures, the floating object recovery device 1
Is composed of a device body 2, a float 3, and a suction pipe line 4 for discharge. Hereinafter, the structure of the recovery device 1 will be described in detail.

The apparatus main body 2 is formed in a bottomed cylindrical shape by a bottom portion 5 made of a relatively thick copper alloy disc and a peripheral wall portion 6 made of an aluminum alloy cylinder. A rectangular window opening 7 through which a liquid and an object flow is formed in a substantially upper half side thereof so as to be long in the axial direction of the peripheral wall portion 6, that is, in the vertical direction. The opening length of this window opening 7 (the length in the vertical direction) is 1 / the length of the cylindrical peripheral wall portion 6.
The width is slightly longer than 2 and the opening width (left and right width) is about 1/3 of the diameter of the cylindrical peripheral wall portion 6. The bottom 5 of the apparatus main body 2 is formed of a copper alloy because the density of the copper alloy is high, so that the bottom 5 is weighted so that the apparatus main body 2 can be stably placed on the bottom of the tank T. And that the liquid used can be sterilized by the sterilizing effect of the copper alloy.

The float 3 is arranged in the apparatus main body 2 so as to be vertically movable along the inner peripheral surface of the peripheral wall portion 6,
The float 3 is formed into a cylindrical shape with a synthetic resin having a specific gravity slightly smaller than the liquid (specific gravity 1.0) used, for example, polypropylene (specific gravity 0.9).
It is slightly smaller than the inner diameter of the peripheral wall portion 6 so as to form almost no gap with the outer peripheral surface of the peripheral wall portion 6, and the axial length is about ½ of the peripheral wall portion 6. A notch 8 for introducing a liquid and an object through the window opening 7 of the apparatus main body 2 is formed at an upper end of the cylindrical float 3 at one position in the circumferential direction so as to have an upward U-shape.

A pair of guide protrusions 9 and 9 are provided on the outer peripheral surface of the float 3 on both left and right sides of the cutout portion 8. The guide protrusions 9 and 9 are formed on the cylindrical peripheral wall portion 6 of the apparatus main body 2. This window opening 7 is projected into the formed rectangular window opening 7.
Up and down movement is guided by both left and right side edge portions 7a, 7a, and up and down movement edge portions 7b, 7c of the window opening 7 restrict the up and down movement within a certain range, whereby the cutout portion of the cylindrical float 3 is formed. 8 is always exposed to the window opening 7 of the peripheral wall 6 of the apparatus main body, the vertical movement of the cylindrical float is properly performed, and the vertical movement range is restricted to prevent the float 3 from being detached from the apparatus main body 2. is doing. The guide protrusion 9 may be formed integrally with the float 3 made of synthetic resin, or may be formed separately from the float 3 and fixed to the outer peripheral surface thereof. In addition, the guide stem 9
Although it is formed in a hemispherical shape in this embodiment, it may be formed in a pin shape (cylindrical shape).

Therefore, when the float 3 is floated on a liquid to be used, the upper end of the float 3 protrudes from the liquid surface by a required height and the lower end 8a of the notch 8 is located below the liquid surface. As shown in FIG. 4, the liquid is introduced into the interior from the window opening 7 on the apparatus body 2 side through the notch 8 of the float 3 as shown in FIG. ing. The liquid around the apparatus main body 2 hardly flows into the float 3 through the gap between the inner peripheral surface of the apparatus main body peripheral wall portion 6 on the window opening 7 side and the outer peripheral surface of the float 3. In addition, the upper edge 7b of the window opening 7
Is set to be located above the liquid surface.

The discharge suction pipe line 4 is made of a metal pipe such as a stainless steel pipe, and the lower end thereof is attached and fixed to the center of the bottom portion 5 of the apparatus main body 2 via the attachment 10. 2 to 5, the fixture 10 has a diametrical groove 11 formed on the lower end surface side of a short columnar main body 10a made of a round steel material, and a screw hole 1 on both sides with the groove 11 sandwiched therebetween.
2 and 12 are provided, and a conduit mounting screw hole 13 is concentrically formed so as to open in the groove 11 on the upper end surface side of the short columnar main body 10a.

When mounting the discharge suction pipe line 4 by the mounting tool 10, the mounting tool 10 is placed at the center of the bottom portion 5 of the apparatus main body 2 and is mounted from the screw insertion hole 14 provided on the lower surface of the bottom portion 5 of the apparatus main body. The screw 10 is screwed into the screw hole 12 of the tool 10 to fix the fixture 10, and the lower end screw portion 4a of the discharge suction pipe line 4 made of a metal tube is screwed into the screw hole 1 of the fixture 10.
The suction conduit 4 is fixed to the central portion of the apparatus main body 2 by screwing it into the device 3. At this time, the groove 1 formed in the fixture 10
Both ends of 1 serve as suction ports of the suction conduit 4. A flexible discharge conduit 17 is connected to the upper end of the suction conduit 4 by a joint 16, and the discharge conduit 17 is a pump 18 for sucking liquid.
(See FIG. 6).

The operation of the recovery device 1 configured as described above will be described. First, the recovery device 1 is put in a tank T (see FIG. 6) in which used coolant CL is stored and placed on the bottom, for example. The oil OL floats above the coolant CL in the tank T. This recovery device 1 is a tank T
When being put in, the device body 2 is fixed to the tank T by its own weight and the weight of the suction suction pipe line 4, and the float 3 is initially arranged as shown in the phantom line in FIG.
Although located in the lower part of the inside, when the coolant CL in the tank T flows into the float 3 from the window opening 7 of the apparatus main body 2 over the upper end edge of the float 3, the coolant CL floats up under the buoyancy of the coolant CL and the oil OL. The float 3, which has received the buoyancy of the coolant CL and the oil OL, has its upper end protruding from the liquid surface of the oil OL and the lower end 8a of the notch 8 being the liquid of the coolant CL, as shown by the solid lines in FIGS. It floats up until it comes to be positioned slightly below the plane, so that in the float 3 from the notch 8 through the window opening 7 to the oil OL.
Is introduced, and this oil OL is the coolant C in the float 3.
Ascend to the upper layer of L. This state is shown in FIG.

When suction is performed by the pump 18 connected to the discharge pipe line 17, the oil OL in the upper layer portion of the coolant CL in the float 3 is first discharged into the discharge suction pipe line 4.
While being sucked and discharged from the suction ports (both ends of the groove 11 of the fitting 10) at the lower end of the float 3, the oil OL continues from the periphery of the apparatus main body 2 through the window opening 7 of the peripheral wall 6 and the float 3
Is introduced into the float 3 through the notch 8 and is sucked and discharged from the suction port at the lower end of the discharge suction pipeline 4 in the same manner as described above.

At this time, oil O is discharged from the notch 8 of the float 3.
The coolant CL is also introduced into the float 3 together with L, but the gap between the inner peripheral surface of the apparatus main body peripheral wall portion 6 on the window opening 7 side and the outer peripheral surface of the float 3 can easily move up and down. The coolant CL hardly flows into the float 3 through the gap, and the location where the liquid is introduced from the outer periphery of the device body 2 is the window opening 7 of the device body 2.
Since there is only the notch 8 at the upper end of the float 3 that opens to the coolant C that flows into the float 3 together with the oil OL
The inflow amount of L can be minimized, and the flow of the liquid (oil OL and coolant CL) introduced from the outside of the apparatus main body 2 into the float 3 through the notch 8 is in a static flow state (turbulent). (Compared with the flow state), therefore, only the supernatant of the liquid upper layer portion in the tank T flows into the float 3 and is sucked and discharged by the discharge suction pipe line 4, which makes the oil OL extremely efficient. It can be separated and collected.

By suctioning with the pump 18 as described above, the oil OL and the coolant C are discharged from the discharge suction pipe line 4.
The mixed liquid with L is continuously discharged. Then, the flow rate of the oil OL to be discharged can be changed and adjusted by changing the opening area of the cutout portion 8 cutout formed in the upper end portion of the float 3. For example, if the opening width of the cutout portion 8 is increased, the discharge flow rate of the oil OL increases. Also, oil OL
The flow rate of the coolant CL discharged together with it can be adjusted by changing the position of the lower end 8a of the cutout portion 8.
If the position a is raised, the discharge flow rate of the coolant CL becomes smaller.

Further, although the cutout portion 8 of the float 3 is provided at one location in the circumferential direction of the upper end portion of the float 3 in this embodiment, it may be provided at a plurality of locations, in which case each cutout portion 8 is provided.
Corresponding to the above, the window opening 7 is provided in the peripheral wall portion 6 of the apparatus body 2. Further, when the cutouts 8 are provided at a plurality of locations as described above, the guide protrusions 9 on both sides of the cutouts 8 may be provided at only one cutout 8.

According to the recovery apparatus 1 of the present invention as described above, the oil OL floating in the upper layer portion of the coolant CL accumulated in the tank T is passed through the window opening 7 of the peripheral wall portion 6 of the apparatus main body 2. The oil OL flows into the float 3 through the cutout portion 8 and is sucked and discharged from the discharge suction pipe line 4. Therefore, the oil OL can be continuously collected. In particular, in this recovery device 1, the coolant CL that flows into the float 3 together with the oil OL (liquid having a small specific gravity)
Since the inflow portion (having a large specific gravity) is the cutout portion 8 at the upper end portion of the float 3 which is the same as the oil OL, the discharge amount of the coolant CL can be reduced as much as possible, and the coolant CL can be passed from the outside of the apparatus main body 2 through the cutout portion 8. The flow of the liquid introduced into the float becomes a static flow state, and only the supernatant of the liquid in the tank T is sucked and discharged, and the oil OL can be discharged very effectively.

In this embodiment, the apparatus main body 2 is fixed to the bottom of the tank T.
This is effective when the depth of the tank is relatively shallow, and when the tank is deep, it is possible to make the entire recovery device 1 float in the liquid. For example, the peripheral wall portion 6 of the device body 2
Attach an appropriate buoyancy member to the required part of the outer periphery of the device body 2
This is a structure in which the whole of the recovery device 1 is floated in a state where the upper end portion of the peripheral wall portion 6 is lifted from the liquid surface. Also,
In this embodiment, the case of recovering the oil OL mixed in the coolant CL has been described, but the present invention is applicable not only to the coolant CL but also to the recovery of liquids or solids floating in the upper layer portion of various liquids. .

FIG. 6 is a vertical cross-sectional view showing a liquid separating device K using the floating object collecting device 1 according to the present invention. In FIG. 6, 21 is a separation tank, 22 is an inlet for introducing the mixed liquid recovered from the recovery device 1 into the separation tank 21, 23 is a weir for overflowing a liquid having a larger specific gravity than the oil OL, and 24 is a lower end portion. A partition wall forming the gap S, and 25 are drain ports for discharging a liquid having a small specific gravity. 26 is a separation plate provided near the drain port 25 so as to float above the liquid surface of the mixed liquid, and 27 is a scraper for scraping the liquid having a low specific gravity floating on the upper layer of the mixed liquid to the drain port 25 side. 27 is pivotally attached to a scraper moving means 29 that can move horizontally along a guide rail 28 and can move up and down.

Reference numeral 30 is a chevron fin for separating liquid,
By assembling a plurality of chevron fins 30 in a multi-step manner, one multi-step chevron fin 30G is formed,
Therefore, in the separation tank 21, a plurality of multi-stepped mountain-shaped fins 3 are formed.
0G are arranged in parallel with each other at an integral interval. 31
Is a receiving part that receives the liquid having a large specific gravity that has separated from the liquid having a small specific gravity by passing through the multi-stepped mountain fins 30G and overflows from the weir 23.
The liquid of the tank
Is stored in.

Next, a process of separating the used coolant CL used in the machine tool from the oil OL and recovering the clean coolant CL by the liquid separating device K as described above will be described. In FIG. 6, 34 is a conduit for returning the used coolant CL used in the machine tool to the tank T,
Reference numeral 35 is a conduit for supplying the coolant CL in the tank T to the machine tool.

The used coolant CL is the coolant C
Although the oil OL is dispersed in L, most of the oil OL in the tank T gradually floats to the upper layer portion of the coolant CL. Then, the oil OL and the coolant CL in the upper layer portion in the tank T are sucked by the pump 18 and discharged to the discharge pipe line 17 by the action of the recovery device 1, and the pipe line 3
It is sent to the separation tank 21 via 6. This recovery device 1
Before the used coolant CL in which the oil OL is dispersed is separated by the liquid separation device K, the upper layer portion of the coolant CL in the tank T is sucked and removed in advance to separate the liquid separation device K.
It is possible to further enhance the separation effect in.

The mixed liquid of the coolant CL (water and water-soluble components) and the oil OL, which has flowed into the separation tank 1 of the liquid separation device K, passes through the multi-step angled fins 30G in the separation tank 21 while passing through the separation tank 21. Oil with a low specific gravity
Are collected in the upper part of the separation tank 21 and the coolant CL having a large specific gravity is collected in the lower part of the separation tank 21, so that the mixed liquid is separated into two layers of the oil OL layer and the coolant CL layer in the separation tank 21.

At this time, the mixed liquid is allowed to flow into the separation tank 21 through the inlet 8 at the bottom as shown in FIG. 6, and the mixed liquid which has flowed into the separation tank 21 is supplied to the inside of the multi-stepped mountain fin 17G. By passing through, the mixed liquid becomes a static flow state (compared with the turbulent flow state) in the separation tank 21. When the mixed liquid is in a static flow state in this way, the oil OL having a small specific gravity easily adheres to each chevron fin 30 and can be efficiently separated from the coolant CL, and the oil O once separated can be efficiently separated.
The L and the coolant CL do not mix again.

The oil OL having a small specific gravity separated from the coolant CL (water and water-soluble components) as described above and collected in the upper part of the separation tank 21 is a scraper moving means 29 which can move vertically while moving horizontally. Scraper 27 pivotally attached to
The coolant CL is attracted to the drain port 25 side by the above, is pulled up onto the separation plate 26, and is collected by the drain port 25. Further, the coolant CL having a large specific gravity is collected in the lower part of the separation tank 21 while being collected in the partition wall 24. It passes through the gap S at the lower end, passes between the partition wall 24 and the weir 23, overflows the weir 23, enters the receiving portion 31, and flows out from the outlet 32 at the bottom thereof. The clarified coolant CL flowing out from the outlet 14 is returned to the tank T through the outflow pipe 33.

The coolant CL thus clarified and returned to the tank T is supplied from the pipe 35 to the machine tool, and the used coolant CL is discharged from the machine tool to the tank T by the pipe 34 and then the tank T. In the mixed liquid of, the oil OL and the coolant CL in the upper layer are pump 1
It is sucked by 8, is discharged to the discharge pipe line 17 by the action of the recovery device 1, and flows into the separation tank 21 of the liquid separation device K.

As can be seen from the above description, the recovery device 1 according to the present invention is applied to the liquid separation device K, and before the used coolant CL in which the oil OL is dispersed is separated by the liquid separation device K, the present invention is applied. Tank T by the recovery device 1 of
By sucking and removing the upper layer portion of the mixed liquid inside, the separation effect in the liquid separation device K can be further enhanced.

[0029]

According to the first aspect of the present invention, an object having a small specific gravity, such as oil, floating in the upper layer of a liquid such as a used coolant is floated through a window opening in the peripheral wall of the main body of the apparatus. It flows into the float from the notch part of
Since the material is sucked and discharged from the suction conduit, it is possible to continuously collect an object having a small specific gravity.

In particular, according to the recovery apparatus of the present invention, since the liquid is introduced from the outer periphery of the apparatus main body only at the notch portion of the float upper end opening to the window opening of the apparatus main body, it is possible to remove the coolant. It is possible to reduce the discharge amount of liquid with a large specific gravity, and the flow of the liquid introduced from the outside of the device body through the notch into the float becomes a static flow state. Therefore, only the supernatant of the liquid upper layer is in the float. And will be sucked and discharged by the discharge suction pipe line,
Therefore, a liquid having a small specific gravity such as oil can be separated and collected very efficiently.

As in the recovery apparatus of the invention according to claim 2,
The device body and the float are each formed in a cylindrical shape, and the notch portion of the float is provided with guide protrusions on both left and right sides, and both guide protrusions are formed by the left and right side edges of the window opening of the peripheral wall of the device body. The movement is guided, and the vertical movement is limited within a certain range by the upper and lower edges, so that the notch portion of the cylindrical float can always be accurately exposed to the window opening of the peripheral wall of the apparatus main body. The vertical movement of the cylindrical float can be properly performed, and the vertical movement range can be limited to prevent the cylindrical float from being detached from the apparatus main body.

[Brief description of drawings]

FIG. 1 is an external front view of a floating object recovery device according to the present invention.

FIG. 2 is a vertical sectional front view of the recovery device.

FIG. 3 is a vertical sectional front view showing a state where a liquid has flown into the recovery device.

FIG. 4 is a vertical cross-sectional side view in a state where liquid has flowed into the recovery device.

FIG. 5 is an exploded perspective view of the recovery device.

FIG. 6 is a vertical cross-sectional view showing a liquid separation device using the floating object recovery device according to the present invention.

[Explanation of symbols]

1 Floating object collection device 2 device body 3 floats 4 Suction line for discharge 5 Bottom of device body 6 Peripheral wall of the device body 7 window openings 8 notches 9 guide stem

Front page continuation (51) Int.Cl. ⁷ Identification symbol FI theme code (reference) B23Q 11/10 B23Q 11/10 Z (72) Inventor Shuji Tanaka 3-3-3, Nishiishikiri-cho, Higashiosaka-shi, Osaka F term in Daishowa Seiki Co., Ltd. (reference) 3C011 EE08 4D051 AA01 AB02 AB03 BA09 BA10 CA01 DB01 DB07 DC04 DC07 DC14

Claims (2)

[Claims] 1. A device for collecting an object floating above a liquid, the device main body having a bottomed cylindrical shape with a bottom portion and a peripheral wall portion, and having a window opening in the peripheral wall portion; It is made of a material with a low specific gravity into a tubular shape,
A float that is vertically movable along the inner peripheral surface of the peripheral wall of the device main body and has a notch at its upper end for introducing liquids and objects into the interior through the window opening of the device main body, and is fixed to the main body of the device. A floating object recovery device, comprising: a suction suction pipe line having a suction port at a position lower than a cutout portion of the float in the main body of the device; 2. The apparatus main body and the float are each formed in a cylindrical shape, and the notch portion of the float is provided with guide protrusions on both left and right sides thereof, and both guide protrusions are formed in a rectangular shape on the peripheral wall portion of the apparatus main body. 2. The floating object collecting apparatus according to claim 1, wherein the vertical movement is guided by both left and right side edges of the opened window opening, and the vertical movement is limited within a certain range by the upper and lower end edges. .