JP2005138069A - Pump apparatus and system for pumping out suspension matter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump apparatus and a system for pumping out suspension, by each of which light oil, or the like, floating on the surface layer of the water stored in a sewage storage tank can be pumped out selectively while automatically coping with even the fluctuation of the water level. <P>SOLUTION: The pump apparatus 2 for pumping out the oil 13 floating on the stored water 11 selectively is composed of components of a funnel-shaped suction port member 3, a diaphragm pump 4, a float 5 and a buoyancy adjusting means 6. The funnel-shaped suction port member 3 is constituted so that a suction port 31 is formed into a funnel-like shape whose diameter is made wider as it goes upward. The funnel-shaped suction port member 3 is equipped with a sucking pipeline (a), the diaphragm pump 4 and a pumping-out pipeline (b) so that the sucked oil is pumped out to the outside. The float 5 has buoyancy enough to position the suction port 31 so that the suction port 31 floats at a predetermined water level. A plurality of the floats 5 are fit to a skeleton 21. A hollow structure 61 is adopted as the buoyancy adjusting means 6, which has an accumulator 61a for producing buoyancy, a compressed air supplying pipe 61b for supplying air and an air discharging pipe 61c for discharging air. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a floating pumping device and a pumping system for selectively pumping floating oil from sewage contaminated with waste oil such as machine oil.

  Conventionally, sewage contaminated with waste oil such as machine oil discharged from a machining factory or the like is usually stored in a storage tank for sewage purification processing or recovery processing of active ingredients. In this storage tank, it is preferable to roughly separate the oil and water in advance by selectively pumping off the oil component having a low specific gravity that floats on the surface layer.

  A so-called submersible pump has been diverted as a pump for this purpose, and the present inventor has not yet found a pump designed for exclusive use. In this submersible pump, an electric motor and an impeller directly connected to the electric motor are housed in a casing, and the liquid sucked from the lower part is pumped upward by the rotation of the impeller. (See Patent Document 1)

However, when this submersible pump is suspended in a sewage storage tank and light oil that floats on the surface layer is selectively pumped, the suction position of the submersible pump fluctuates. Stable pumping operations were difficult, such as pumping out a lot, or sucking air away from the surface and causing pumping failure such as poor lift.
Japanese Utility Model Laid-Open No. 5-14590: configuration, figure

  The present invention has been made to solve the above-mentioned problems, and automatically responds to changes in the level of stored water in a sewage storage tank, and selects light oil that floats on the surface layer. A floating pumping device and a pumping system that can be pumped automatically are provided.

  The above problem is a floating pumping pump device that selectively pumps oil on the surface layer while floating in a sewage tank, and a funnel-shaped suction port member formed with the suction port facing upward, and the funnel-shaped suction port member A pump for pumping out the sucked oil to the outside, a float for positioning the suction port in a floating state at a predetermined water level, and a buoyancy adjusting means capable of finely adjusting the water level. This can be solved by the floating pumping apparatus according to the first aspect of the present invention.

  According to the first aspect of the present invention, the buoyancy adjusting means includes an air reservoir that generates buoyancy, a compressed air supply pipe that supplies air to the air reservoir, and an air discharge pipe that discharges air from the air reservoir. The pump can be embodied as a diaphragm pump driven by compressed air.

  Further, the above problem is that the floating pumping device of the first invention and the oil / water mixture pumped from the pumping pump are stored, the separated and floated oil is taken out, and the separated water stored in the lower part is stored in the lower part. An oil / water separation / storage tank that is to be returned to the sewage tank, an air compressor that prepares compressed air to be supplied to the diaphragm pump and the buoyancy adjustment means, and a control that adjusts the amount of air in the air reservoir of the buoyancy adjustment means This can be solved by the pumping system according to the second aspect of the present invention.

  According to the first invention of the present invention, the float and the buoyancy adjusting means that can be finely adjusted automatically cope with the fluctuation of the water level of the stored water in the sewage storage tank, and the suction port of the pump is arranged on the surface layer. The oil on the surface layer can be selectively pumped out while floating so as to be positioned close to Moreover, since a compressed air drive type diaphragm pump is used as a pump, there is an advantage that a head failure and an electrical trouble do not occur.

  According to the second invention, since the oil / water separation / storage tank is added to the floating pumping device of the first invention, the oil / water separation can be performed more effectively, and the pump and the buoyancy can be adjusted centrally by the compressed air. The advantage is obtained. Therefore, the present invention has extremely high practical value as a floating pumping apparatus and pumping system that solves the conventional problems.

Next, an embodiment according to the floating pumping apparatus of the first invention of the present invention will be described with reference to FIGS.
The present invention is a floating pumping device 2 that selectively pumps the floating oil component 13 of the surface layer 12 while floating in the stored water 11 of the sewage tank 1 (see FIG. 2). It consists of each component of the mouth member 3, the diaphragm pump 4, the float 5, and the buoyancy adjusting means 6.

  The funnel-shaped suction port member 3 is a member formed in a funnel shape made of plastic or metal formed by expanding the diameter of a suction port 31 such as a circle or a square upward. A diaphragm pump is provided between the suction pipe a and the pumping pipe b so that the oil sucked from the funnel-shaped suction port member 3 can be pumped out from the suction pipe a leading to the suction port member 3 through the pumping pipe b. 4 is provided in a housing 21 formed of a metal frame material or the like. The diaphragm pump 4 is a pump of a type driven by compressed air supplied and exhausted by the compressed air supply pipe 4b and the air discharge pipe 4c, and is preferable because it can be shared with the buoyancy adjusting means 6 described later.

  The float 5 is made of a hollow body having a sufficient buoyancy or a material having a low specific gravity to place the suction port 31 in a floating state at a predetermined water level, so that the entire apparatus can float in a horizontal state. A plurality of pieces are attached to the upper portion of the casing 21. The degree of buoyancy is adjusted so that the distance (depth) between the upper edge of the suction port 31 and the surface of the stored water becomes a preferable value so that the floating oil component 13 of the surface layer 12 can be smoothly sucked from the suction port 31. Just keep it.

  In the present invention, as the buoyancy adjusting means 6 capable of finely adjusting the water level, for example, the illustrated hollow structure 61 may be employed. The hollow structure 61 includes an air reservoir 61a that generates buoyancy, a compressed air supply pipe 61b that supplies air to the air reservoir 61a, and an air exhaust pipe 61c that discharges air from the air reservoir. By remotely operating the air amount of the unit 61a, the entire apparatus is moved up and down to adjust. Thus, the depth of the suction port 31 can be adjusted to the optimum position.

  As described above, the pump according to the first aspect of the present invention automatically adjusts the water level of the stored water 11 in the sewage storage tank to the predetermined level by the float 5 and the hollow structure 61 capable of finely adjusting the buoyancy. Since it is floating, the floating oil component 13 on the surface layer can be selectively pumped out while floating with the suction port of the pumping pump close to the preferred distance from the surface layer. In addition, since the compressed air drive type diaphragm pump 4 is used as a pump, there is no occurrence of a head failure or electrical trouble unlike a conventional submersible pump.

Next, an embodiment according to the second aspect of the present invention will be described with reference to FIG.
The pumping system according to the present invention includes the floating pumping device 2 of the first invention suspended in the stored water 11 of the sewage storage tank 1 and the pumping pump device 2 pumping the sewage storage tank 1 to the outside. The oil / water mixture is temporarily stored, the separated and floated oil is taken out, and the separated water stored in the lower part is returned to the sewage storage tank 1, and the diaphragm pump 4 and the buoyancy An air compressor 72 that prepares compressed air to be supplied to the adjusting unit 6 and a control unit 73 that adjusts the amount of air in the air reservoir of the buoyancy adjusting unit 6 are provided.

  According to the second aspect of the invention, the advantages of the floating pumping apparatus of the first aspect of the invention can be enjoyed, and further, the oil / water separation can be performed more effectively by the added oil / water separation / storage tank 71, so that the post-treatment is easy. In addition to the advantages, the pump operation and the buoyancy adjustment by the compressed air can be remotely operated by the control unit 73 placed outside the sewage storage tank 1 and can be integrated.

  In addition, the line 73a which connects the control part 73 and the floating pumping apparatus 2 shown in the figure is for mooring the pumping pump apparatus 2, Comprising: A chain | strand or a rope rope can be applied, Along this line 73a, The compressed air supply pipe 4b and the air discharge pipe 4c and the pumping pipe b connected to the diaphragm pump 4 and the compressed air supply pipe 61b and the air discharge pipe 61c connected to the buoyancy adjusting means 6 are collectively arranged. In this way, there are advantages such as easy maintenance.

The principal part side surface block diagram for demonstrating embodiment of 1st invention. The principal part sectional block diagram for demonstrating embodiment of 2nd invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Sewage storage tank, 11: Reservation water, 12: Surface layer, 13: Floating oil component 2: Floating pump device, 21: Housing 3: Suction port member, 31: Suction port 4: Diaphragm pump, 4b: Compressed air supply pipe 4c: air discharge pipe 5: float 6: buoyancy adjusting means 61: hollow structure 61a: air reservoir 61b: compressed air supply pipe 61c: air discharge pipe a: suction pipe b: pumping pipe

Claims (3)

  A floating pump device that selectively pumps up oil on the surface layer while floating in a sewage tank, and has a funnel-shaped suction port member formed with the suction port facing upward, and the oil sucked from the funnel-shaped suction port member externally And a pump for pumping out the water, and a float for positioning the suction port member in a floating state at a predetermined water level, and a buoyancy adjusting means capable of finely adjusting the water level. Pumping pump device.   The buoyancy adjusting means includes an air reservoir that generates buoyancy, a compressed air supply pipe that supplies air to the air reservoir, and an air discharge pipe that discharges air from the air reservoir, and the pump is driven by compressed air. The floating pumping device according to claim 1, which is a diaphragm pump to be operated. The floating pumping device according to claim 2 and the oil / water mixture pumped from the pumping device are stored, the separated and floated oil is taken out, and the separated water stored in the lower part is returned to the sewage tank. An oil / water separation / storage tank, an air compressor for preparing compressed air to be supplied to the diaphragm pump and the buoyancy adjusting means, and a controller for adjusting the amount of air in the air reservoir of the buoyancy adjusting means are provided. A pumping system characterized by that.

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