JP2004216257A - Suction nozzle structure and separated oil discharge structure of floating oil recovery apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly discharge oil by a separated oil discharge nozzle by sucking a mixed liquid in a tank by a suction nozzle and separating the same in two separation sections. <P>SOLUTION: The subject suction nozzle structure and the subject separated oil discharge structure of a floating oil recovery apparatus are constituted so that the mixed liquid (3) sucked through the float valve (52) of a cup body (50) is sent to the second separation section (30) from the first separation section (6) and floating oil (7) is certainly disposed by the falling of the float (38) of a separated oil discharge nozzle (35). <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a suction nozzle structure and a separated oil discharge structure of a floating oil recovery device, and in particular, recovers a liquid surface of a liquid by the action of a float valve floating in a float-shaped cup, and furthermore, collects the floating oil of the recovered liquid. The present invention relates to a novel improvement for performing stable recovery without performing float valve and float valve adjustment and position adjustment by discharging the floating oil by sinking a float of a separated oil discharge nozzle.
[0002]
[Prior art]
FIG. 9 shows an example of this type of floating oil recovery apparatus that has been used conventionally (for example, see Non-Patent Document 1).
That is, what is indicated by reference numeral 1 in FIG. 9 is a floating oil recovery device, and in the tank 2 of the floating oil recovery device 1, oil is mixed with water used for cutting and the like discharged from processing equipment. The mixed liquid 3 is supplied.
[0003]
The liquid mixture 3 is stored upward from the bottom 6a side in the upper tank 6 via the float suction 4 and the pump 5 floating on the tank 2, and a floating oil 7 is on the upper surface of the upper tank 6. It is configured to accumulate.
[0004]
The floating oil 7 is collected in an oil tank 9 through an oil outlet 8, and water 10 in the upper tank 6 is returned to the tank 2 through a water discharge pipe 11.
[0005]
[Non-patent document 1]
http: // www. zeotek. co. jp / product / detail / wosmini. html
[0006]
[Problems to be solved by the invention]
Since the conventional floating oil recovery device is configured as described above, the following problems exist.
In other words, the float suction floating on the mixed liquid has a structure in which only the upward suction port is floated by the float, so that it is easily affected by foaming and waves, and it is difficult to efficiently suck only the floating oil. there were.
In addition, the position of the float of the float suction has to be adjusted according to the state of the mixed solution, etc., which requires a great deal of labor and cost for maintenance and inspection.
[0007]
The present invention has been made in order to solve the above problems, and in particular, recovers the liquid surface of a liquid by the action of a float valve floating in a float-shaped cup, and furthermore, the floating oil of the recovered liquid. The float of the separated oil discharge nozzle sinks inside and the floating oil is discharged, so that the float valve and the suction nozzle structure of the floating oil recovery device that performs stable recovery without performing float valve adjustment and position adjustment And an oil separation structure.
[0008]
[Means for Solving the Problems]
The suction nozzle structure of the floating oil recovery device according to the present invention is configured so that the mixed liquid in the tank is sent into the first separation section of the floating oil recovery device through the suction nozzle floating above the mixed liquid. In the suction nozzle structure of the recovery device, the suction nozzle has a cup body having an opening on a side portion, a float valve movably provided in the cup body, and a through hole formed in the center of the float valve. A taper surface formed on the upper surface of the float valve and communicating with the through-hole, and a suction pipe connected to the bottom of the cup body, wherein the float valve sucks the mixed liquid from the suction pipe, whereby the float valve The structure is such that the mixed liquid surface in the tank descends and is sucked into the suction pipe through the tapered surface and the through hole. The mixed liquid thus drawn is sent into a second separation section of a floating oil recovery device, and a floating oil of the mixed liquid in the second separation section is supplied to a separation oil discharge nozzle fixedly disposed in the second separation section. In the separated oil discharge structure of the floating oil recovery device configured to be discharged through the discharge oil separation nozzle, the separated oil discharge nozzle is vertically movable on an upper part of the discharge pipe and a discharge pipe planted at the bottom of the second separation section. A float having a specific gravity lighter than water and heavier than oil, and an opening formed on an upper surface of the float and communicating with the discharge pipe, wherein when the floating oil accumulates in the mixed liquid, the float is in the floating oil. And the floating oil is discharged from the discharge pipe through the opening.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a suction nozzle structure and a separated oil discharge structure of a floating oil recovery device according to the present invention will be described with reference to the drawings. The same or equivalent parts as those in the conventional example will be described using the same reference numerals.
FIG. 1 shows the overall configuration. In FIG. 1, reference numeral 1 denotes a floating oil recovery device. In a tank 2 of the floating oil recovery device 1, a mixture of water and oil consisting of a cutting fluid or the like from a processing equipment A such as a cutting machine (not shown) is provided. The liquid 3 is configured to be supplied.
[0010]
Above the mixture 3 in the tank 2, a suction nozzle 4 floats, and the mixture 3 is sucked by a pump 20 via a pipe 2 a and a chip filter 2 b to be in a tank-like first separation section 6. Supplied to
In the first separation section 6, a plurality of guide plates 6a are disposed in an inclined state and have a flow path 6b, and the mixed liquid 3 is sent upward from the bottom 6A side by the pump 20. It is configured such that fine particles accumulate on the bottom 6A side and coarse particles 6b accumulate on the top side.
[0011]
As shown in FIGS. 3 and 4, the second separation section 30 is integrally connected to the first separation section 6 adjacent to the first separation section 6, and a communication pipe disposed above the first separation section 6. By 31, the mixed liquid 3 is supplied from the first separation section 6 into the second separation section 30.
[0012]
The second separation section 30 is provided with a separation oil discharge nozzle 35 at the bottom 30a, and a discharge pipe 36 of the separation oil discharge nozzle 35 is planted at the bottom 30a. A float 38 having a substantially T-shape and having an opening 37 is provided to be vertically movable.
The float 38 is made of a material having a specific gravity lighter than water and heavier than oil, such as polyethylene. The float 38 floats on water, sinks in the floating oil 7 when the floating oil 7 accumulates, and floats from the opening 37. 7 is discharged through the discharge pipe 36 and disposed in the waste oil receiver 9.
[0013]
As shown in FIGS. 5 and 6, the suction nozzle 4 has an opening 51 in a side portion 50 a and a cup body 50 floating on the mixed liquid 3, and is capable of floating vertically in the cup body 50. A float valve 52, a through hole 60 formed at the center of the float valve 52, a tapered surface 61 formed on an upper surface of the float valve 52 and communicating with the through hole 60 at an angle, and the cup body 50. And a suction pipe 62 connected to the bottom 50b of the pump for sucking the mixed liquid 3 by the pump 20.
[0014]
Next, the operation will be described. First, the mixed liquid 3 of water and oil supplied from the processing equipment A (not shown) accumulates in the tank 2 and is sucked together with the oil on the surface thereof by operating the pump 20, and the float of the suction nozzle 4 in FIG. Since the valve 52 descends as shown in FIG. 6, the mixed liquid 3 in the tank 2 is supplied from the bottom 6A side into the first separation section 6 through the opening 51 of the side part 50a through the tapered surface and the through hole 60. Is done.
[0015]
When the amount of the mixed liquid 3 supplied to the first separation section 6 increases and overflows into the communication pipe 31 from the surface side, the mixed liquid 3 flows from the first separation section 6 into the second separation section 30. Supplied.
When the water level of the mixed liquid 3 in the second separation section 30 rises and its surface reaches the float 38 of the separation oil discharge nozzle 35, when the ratio of the float 38 in contact with water is high, as shown in FIG. The floating oil 7 does not enter the opening 37.
[0016]
In the above-mentioned state, when the mixed liquid 3 is supplied one after another, and the ratio of the floating oil 7 accumulated on the surface thereof increases, the float 38 sinks into the floating oil 7 as shown in FIG. It is discarded from the discharge pipe 36 through the opening 37 into the waste oil receiver 9.
At the same time, since the liquid mixture 3 in the second separation section 30 is almost separated into the floating oil 7 and the water 3a, the water 3a rises in the guide cylinder 70 and goes through the water outlet 8 into the tank 2 To the purifying liquid 3aA.
Therefore, in the second separation section 30 in the final step, the processing of the floating oil 7 and the processing of the water 3a are performed continuously or intermittently.
It should be noted that the present invention is not limited to the mixed liquid 3 composed of the cutting liquid from the processing equipment described above, but can be applied to the mixed liquid 3 of water and oil from other equipment.
[0017]
【The invention's effect】
Since the suction nozzle structure and the separated oil discharge structure of the floating oil recovery device according to the present invention are configured as described above, the following effects can be obtained.
In other words, since the float valve floats in the suction nozzle that floats in the tank, the mixed liquid containing the floating oil can be efficiently sucked from the surface side of the tank only by suction, and stable regardless of foaming and waves. You can suck.
Also, since the separated oil discharge nozzle 35 of the final second separation section has a float with a specific gravity heavier than oil, oil and water are completely separated, and only oil is discarded without draining water. Can be.
Further, the float valve and the float described above do not require adjustment and are easy to maintain and inspect.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a floating oil recovery device according to the present invention.
FIG. 2 is a detailed configuration diagram of FIG.
FIG. 3 is a detailed configuration diagram of a main part of FIG. 2;
FIG. 4 is a detailed configuration diagram of a main part of FIG. 2;
FIG. 5 is an enlarged detailed view of a main part of FIG. 2;
FIG. 6 is an operation state diagram of FIG. 5;
FIG. 7 is an enlarged detailed view of a main part of FIG. 2;
8 is an operation state diagram of FIG.
FIG. 9 is a conventional configuration diagram.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 floating oil recovery device 2 tank 3 mixed liquid 4 suction nozzle 6 first separation section 7 floating oil 30 second separation section 30 a bottom 35 separated oil discharge nozzle 36 discharge pipe 37 opening 38 float 50 cup body 50 a side part 51 opening 52 float Valve 50b Bottom 60 Through hole 61 Tapered surface 62 Suction pipe

Claims (2)

The mixed liquid (3) in the tank (2) is fed into the first separation section (6) of the floating oil recovery device (1) via the suction nozzle (4) floating above the mixed liquid (3). In the suction nozzle structure of the floating oil recovery device,
The suction nozzle (4) includes a cup body (50) having an opening (51) in a side part (50a), a float valve (52) provided vertically movable in the cup body (50), A through hole (60) formed at the center of the float valve (52); a tapered surface (61) formed on the upper surface of the float valve (52) and communicating with the through hole (60); ), A suction pipe (62) connected to the bottom (50b), and by sucking the mixture (3) from the suction pipe (62), the float valve (62) descends and the tank ( 2. The floating oil recovery device according to claim 1, wherein the surface of the mixed liquid (3) in (2) is sucked into the suction pipe (63) through the tapered surface (61) and the through hole (60). Suction nozzle structure. The mixed liquid (3) sucked by the suction nozzle (4) according to claim 1 is sent into a second separation section (30) of the floating oil recovery device (1), and the mixed liquid (3) in the second separation section (30) is sent. Separated oil discharge of a floating oil recovery device configured to discharge a floating oil (7) of a mixed liquid (3) through a separated oil discharge nozzle (35) fixedly disposed in the second separation section (30). In structure
The separation oil discharge nozzle (35) is provided on a bottom (30a) of the second separation section (30) and a discharge pipe (36) erected on the bottom (30a) of the second separation section (30). A float (38) having a specific gravity lighter than water and heavier than oil, and an opening (37) formed on an upper surface of the float (38) and communicating with the discharge pipe (36); When (7) is accumulated, the float (38) sinks into the floating oil (7), and the floating oil (7) is discharged from the discharge pipe (36) through the opening (37). A separated oil discharge structure of a floating oil recovery device, characterized in that:

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