FORM 2
The Patent Act 1970
(39 of 1970)
&
The Patent Rules, 2003
COMPLETE SPECIFICATION (See Section 10; Rule 13)
TITLE OF THE INVENTION
A SKIMMING DEVICE FOR OIL-EXTRACTION FROM A TANK CONTAINING COOLANT LIQUID
APPLICANT
KIRLOSKAR OIL ENGINES LIMITED
an Indian Company.
Laxmanrao Kirloskar Road,
Khadki, Pune 411 003,
Maharashtra, INDIA;
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes and ascertains the nature of this invention and the manner in which it is to be performed.

FIELD OF THE INVENTION
[0001] The present disclosure relates to oil skimming device, and more particularly to an impeller driven skimming device for oil-extraction from a tank containing coolant liquid.
BACKGROUND OF THE INVENTION
[0002] Skimming devices for oil-extraction from tank are conventionally used to collect oil and send it in suspension to oil-extraction unit or equipment’s. These skimmer devices are either fixed or floating. FIG. 1 illustrates conventional electric motor driven skimmer, according to prior art. The electric motor drives shaft of the skimmer. On the shaft, a chain roller (for example, a pulley) having a steel belt is fitted. The pulley rotates along with the shaft due to drive electrical energy from the electric motor. The electric motor drives the shaft and pulley along with steel belt on pulley. Steel belt removes the oil from the coolant as it rotates from inside the coolant tank. Oil lying on the coolant stick to the steel belt and came out and is extracted. Electric motor drive this belt continuously with using electric energy. Extra electrical energy input need to be provided for the electric motor to electrically drive the shaft of the skimmer. This extra electrical energy is nothing but electrical energy consumption. There are such electric motor driven oil skimmers for every oil skimmer on every CNC machines. Also maintenance of the electric motors also increases inventory cost.
[0003] Thus there remain a need to eliminate electric motor of oil skimmers and develop skimming devices for oil-extraction from a tank containing coolant liquid with zero electrical energy.

OBJECT OF THE INVENTION
[0004] The principal object of the embodiments herein is to provide an impeller driven skimming device for oil-extraction from a tank containing coolant liquid.
[0005] Another object of the embodiments herein is to rotate the impeller based on a flow of a coolant liquid. The rotation of the impeller in turn rotate the shaft and the rotation of the shaft in turn rotates the belt thought the chain roller for removing oil from the coolant liquid.
[0006] Yet another object of the embodiments herein is to control the flow of the coolant liquid using a valve which in turn control a speed of the belt.
SUMMARY OF THE INVENTION
[0007] In one aspect object is satisfied by providing a skimming device for oil-extraction from a tank containing coolant liquid. The skimming device comprises a chain roller, a belt mounted on the chain roller, a shaft extending into the chain roller with two support bearings, and an impeller mounted on the shaft, and a pump to provide a flow of the coolant liquid. The flow of the coolant liquid rotates the impeller. Further, the rotation of the impeller in turn rotate the shaft and the rotation of the shaft in turn rotates the belt thought the chain roller for removing oil from the coolant liquid.
[0008] In an embodiment, the chain roller is mounted at one end of the shaft and the pump impeller is mounted at other end of the shaft.

[0009] In an embodiment, the pump is connected with a valve to control the flow of the coolant liquid and the flow of the coolant liquid controls the rotation of the impeller and the shaft to control a speed of the belt.
[0010] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF FIGURES
[0011] This method and system is illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0012] FIG. 1 illustrates conventional electric motor driven skimming device, according to prior art;
[0013] FIG. 2 illustrates proposed impeller driven skimming device running in the field, according to an embodiment as disclosed herein;
[0014] FIG. 3 illustrates detailed view of the skimming device, according to an embodiment as disclosed herein;
[0015] FIG. 4 illustrates a sectional view of the skimming device, according to an embodiment as disclosed herein;

[0016] FIG. 5 illustrates design of the proposed impeller, according to an embodiment as disclosed herein;
[0017] FIG. 6 illustrates coolant flow driving the impeller and shaft for oil extraction, according to an embodiment as disclosed herein.
[0018] FIG. 2b illustrates another segment view of the multi-segment drum for building a stage-I carcass of a tyre, according to an embodiment as disclosed herein; and
[0019] FIG. 3 illustrates a sliding type of the multi-segment drum, according to an embodiment as disclosed herein.
DETAILED DESCRIPTION OF THE INVENTION
[0020] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. Also, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments. The term “or” as used herein, refers to a non-exclusive or, unless otherwise indicated. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein can be practiced and to further enable those skilled in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.

[0021] The accompanying drawings are used to help easily understand various technical features and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. As such, the present disclosure should be construed to extend to any alterations, equivalents and substitutes in addition to those which are particularly set out in the accompanying drawings. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are generally only used to distinguish one element from another.
[0022] Accordingly embodiments herein discloses a skimming device for oil-extraction from a tank containing coolant liquid. The skimming device comprises a chain roller, a belt mounted on the chain roller, a shaft extending into the chain roller with two support bearings, and an impeller mounted on the shaft, and a pump to provide a flow of the coolant liquid. The flow of the coolant liquid rotates the impeller. Further, the rotation of the impeller in turn rotate the shaft and the rotation of the shaft in turn rotates the belt thought the chain roller for removing oil from the coolant liquid. Further, the pump is connected with a valve to control the flow of the coolant liquid and the flow of the coolant liquid controls the rotation of the impeller and the shaft to control a speed of the belt.
[0023] Energy saving is a major need of the day. Everybody is concentrating over the energy saving through different Green initiatives. The elimination of the electric motor using the proposed impeller driven skimmer device for oil extraction is one of such Green initiative. Unlike the conventional oil skimmers, the proposed oil skimmer device works on impeller driven shaft with available coolant flow as an energy source. In conventional systems, there is coolant pump with electric motor on machine coolant tank. It is running as soon as machine is made on. This coolant flow goes to machine for cleaning the metal chips. The electric motor drives the shaft and pulley along with steel belt on pulley. Steel belt removes the oil from the coolant as it rotates from inside the

coolant tank. Oil lying on the coolant stick to the steel belt and came out and is extracted. The electric motor drive this belt continuously with using electric energy. In the proposed invention, one extra coolant flow pipeline is taken out from this coolant pump and this pipeline coolant flow can be used to drive the impeller. Thus the the electric motor is completely eliminated and the belt of the skimming device runs without use of any additional electric motor. Further, Customer can adjust speed of the belt of the skimming device with manual control valve. With this valve the flow of coolant can be controlled or varied which in turn control or vary speed of the steel belt. This achieves a variable speed belt as per requirement.
[0024] Referring now to the drawings, and more particularly to FIGS. 1 through 4, there are shown preferred embodiments.
[0025] FIG. 2 illustrates proposed impeller driven skimming device running in the field, according to an embodiment as disclosed herein. Unlike the conventional oil skimmers, the proposed oil skimmer device works on impeller driven shaft with available coolant flow as an energy source. The details of the proposed skimming device is explained in conjunction with the FIG. 3.
[0026] FIG. 3 illustrates detailed view of the skimming device (100), according to an embodiment as disclosed herein. The skimming device (110) comprises a chain roller (102), a belt (104) mounted on the chain roller (102), a shaft (106) extending into the chain roller (102) with two support bearings (108a and 108b), an impeller (110) mounted on the shaft (106), and a pump (112) to provide a flow of the coolant liquid. The chain roller (102) described herein can be a pulley or the like. The shaft (106) is mounted on bearing base on a base mounting plate as shown in the FIG. 4. The flow of the coolant liquid rotates the impeller (110) which in turn rotate the shaft (106). Further, the rotation of the shaft (106) in turn rotates the belt (104) thought the chain roller (102) for

removing oil from the coolant liquid. In an embodiment, the chain roller (102) is mounted at one end of the shaft (106) and the impeller (110) is mounted at other end of the shaft (106). Thus, unlike the conventional skimming device, the need of electric motor is completely eliminated thereby saving the electrical energy and cost for the electric motor and management thereof.
[0027] Further, the pump (112) is connected with a valve (114) to control the flow of the coolant liquid, wherein the flow of the coolant liquid controls the rotation of the impeller and the shaft (106) to control a speed of the belt (104). Thus, unlike the conventional skimming device, a customized or variable speed control is achieved as desired by the user. In the conventional skimming device the motor runs on predefined speed and there is no means to vary the speed of the motor to vary or control the speed of the belt. Using the proposed skimming device (100), the speed of the belt is controlled using the value. With this valve, control or vary the flow of coolant is controlled to control or vary the speed of the belt.
[0028] FIG. 4 illustrates a sectional view of the skimming device (100), according to an embodiment as disclosed herein.
[0029] FIG. 5 illustrates design of the proposed impeller (110), according to an embodiment as disclosed herein.
[0030] FIG. 6 illustrates coolant flow driving the impeller (110) and shaft (106) to rotate the chain roller (102) for oil extraction, according to an embodiment as disclosed herein.
[0031] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore,

such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

We Claim:
1. A skimming device (100) for oil-extraction from a tank containing coolant
liquid, wherein said skimming device (100) comprises:
a chain roller (102);
a belt (104) mounted on said chain roller (102);
a shaft (106) extending into said chain roller (102) with two support
bearings (108a and 108b);
an impeller (110) mounted on said shaft (106); and
a pump (112) to provide a flow of said coolant liquid,
wherein said flow of said coolant liquid rotates said impeller (110),
wherein said rotation of said impeller (110) in turn rotate said shaft (106),
and wherein said rotation of said shaft (106) in turn rotates said belt (104)
thought said chain roller (102) for removing oil from said coolant liquid.
2. The skimming device (100) as claimed in claim 1, wherein said chain roller (102) is mounted at one end of said shaft (106) and said impeller (110) is mounted at other end of said shaft (106).
3. The skimming device (100) as claimed in claim 1, wherein said pump (112) is connected with a valve (114) to control said flow of said coolant liquid, wherein said flow of said coolant liquid controls said rotation of said impeller and said shaft (106) to control a speed of said belt (104).