Title of Invention

POLISHING MACHINE FOR GRAINS

Abstract

ABSTRACT Polishing" machine for grains, especially rice, with a housing, in which a polishing rotor (3), partly surrounded by a sieve casing (2) is placed horizontally, so that a polishing chamber (8) is formed between the polishing rotor(3) and the sieve casing (2), whereby a feeder of grains outside the polishing chamber (8) and an outlet (11) for the polished grains is provided and whereby the sieve casing is surrounded by a casing in which the bran etc. removed from the grains are picked up and carried awav, is characterized by the fact that the polishing rotor (3) is designed as a cam roll (7) in area of sieve casing (2) and is provided with a variable gradient.

Full Text

The invention concerns a polishing machine for grains, especially for rice-Machines for grinding and polishing the outer surfaces of grains are well-known. Especially high demands are made on rice polishing. Such polishing machines are described for example in the EP-B-218012. They show a frame in which a cylindrical sieve casing is placed, inside which a grinding or polishing rotor with grinding or polishing tools is arranged axiallv. Between the sieve casing and the rotor, there is a polishing chamber, which is colinial. The axis of the rotor is coaxial with the axis of the sieve casing. The grains to be polished are transported from an inlet to the outlet while the polishing and grinding of the grains takes place in the polishing chamber. It is even possible to humidify the grains in the polishing chamber. i ■- ■ ,- The task behind the invention is to make such a generic polishing machine, that the polishing work can be improved with minimum expenditure. The task is solved with the help of the patent claim. The rice is hereby processed on a rotor shaft in two sections. In the first section, after the rice is fed in, a moistening of the grains with a thin water film takes place, whereby a uniform water flow is controlled. In a following polishing step, the rice grains are gently rubbed against each other and polished. The degree of friction or polishing can be set and the polishing chamber is aspirated for cooling and removal of the abraded bran. Accordingly there is provided Polishing machine for grains, especially rice, with a housing, in which a polishing rotor (3), partly surrounded bv a sieve casing (2) is placed horizontally, so that a polishing chamber (8) is formed between the polishing rotor(3) and the sieve casing (2), whereby a feeder of grains outside the polishing chamber (8) and an outlet(l 1) for the polished grains is provided and whereby the sieve casing is surrounded bv a casing in which the bran etc. removed from the grains are picked up and carried away, is characterized bv the fact that the polishing rotor (3) is designed as a cam roll (7) in area of sieve casing (2) and is provided with a variable gradient. 2 The inycntion will now be clear from the following description and illustration of Figures 1 to 3 in the accompanying drawing. Fig. 1: elevation view of the polishing machine. Fig. 2: sectional view of a polishing rotor Fig. 3: a feeding and mixing screw (paddle screw) Referring to figures 1 to 3, Polishing machine for grains, especially rice, with a housing, in which a polishing rotor (3), partly surrounded by a sieve casing (2) is placed horizontally, so that a polishing chamber (8) is formed between the polishing rotor(3) and the sieve casing (2), whereby a feeder of grains outside the polishing chamber (8) and an outlet(l 1) for the polished grains is provided and wherebv the sieve casing is surrounded by a casing in which the bran etc. removed from the grains are picked up and carried away, is characterized by the fact that the polishing rotor (3) is designed as a cam roll (7) in area of sieve casing (2) and is provided with a variable gradient. A polishing rotor 3 in horizontal position in a frame and housing unit 1 is placed in a machine in a rotatable manner. Above the first section of the polishing rotor 3, there is an inlet 4 for the rice . The polishing rotor3 in this section is designed as a feed screw. On the first section the controlled and steered supply of water takes place, so that the water is divided amongst the grains equally and finely. By supplying water before the polishing section, dirt from outside or other impurities do not come in the shaft (polishing rotor 3). In the following polishing section the polishing rotor is designed as polishing tool and is surrounded by a sieve casing 2. The sieve casing 2 is made up of many units whose thicknesses are adjusted for the respective polishing job. 3 The feed screw 5 is designed as a paddle screw. The polishing tool is in the form of a cam roll 7, whose inclination is steep in the beginning and towards the outlet 11 of the product it is flatter. Hereby the polishing rotor already shows a cam 6 in area of water supply. The screw 5 and the polishing tool are thus placed on a shaft. Between the polishing rotor 3 and sieve casing 2 there is a polishing chamber 8 built in the form of a crevice of equal size. The sieve casing 2 is surrounded by a casing 9, which, in the lower area is built as a hopper for transportation of the bran etc.. The surface of the the polishing chamber 8 that is awav from the inlet is open and turns into an outlet: 11 for the polished grains. The sections are closed from the surroundings, so that the grains do not come in contact with the atmosphere. The polishing rotor 3 is driven bv a belt drive 12 driven by a motor 13, which is placed under the rotor 3 on the housing and frame module. The belt drive is also surrounded by a housing. The polishing rotor3 is designed as a hollow shaft and has a lot of perforations 14 in area of the polishing chamber 8 from which the air can be supplied to the polishing chamber. This air is provided bv a fan 15, which is placed outside on the housing, whereby the air comes directly from the fan 15 in the hollow shaft and through the perforations 14 in the polishing chamber 8. It is preferred that the fan 15 is fixed on the extension of the polishing rotor's 3 axis. Terms of reference 1. Frame and housing module 2. Sievecasing 3. Polishing rotor 4. Inlet We Claim: 1. Polishing machine for grains, especially rice, with a housing, in which a polishing rotor (3), partly surrounded by a sieve casing (2) is placed horizontally, so that a polishing chamber (8) is formed between the polishing rotor (3) and the sieve casing (2), whereby a feeder of grains outside the polishing chamber (8) and an outlet (11) for the polished grains is provided and whereby the sieve casing is surrounded by a casing in which the bran etc. removed from the grains are picked up and carried away, is wherein by the fact that the polishing rotor (3) is designed as a cam roll (7) in area of sieve casing (2) and is provided with a variable gradient. 2. Polishing machine as claimed in claim 1, wherein the gradient of the cam roll (7) is designed to be first steeper from the inlet side and flatter towards outlet (11) side. 3. Polishing machine as claimed in claim 1 or 2 wherein the polishing rotor (3) is designed as a hollow shaft and the cam roll (7) has perforations (14). 4. Polishing machine as claimed in claim 3 wherein an air supplying device is fixed on the same axis as the polishing rotor (3). 5. Polishing machine as claimed in claim 1 wherein the sieve casing (2) is made up of segments or sieve sheets. 6. Polishing machine as claimed in claim 1 wherein a humidifier is provided for the grains between inlet and sieve casing (2).

Documents:

1078--mum-2002-claims.doc

1078-mum-2001-abstract(2-12-2002).doc

1078-mum-2001-claims(granted)-(2-12-2002).doc

1078-mum-2001-form 2(granted))-(2-12-2002).doc

1078-mum-2002-abstract(2-12-2002).pdf

1078-mum-2002-abstract.doc

1078-mum-2002-abstract.pdf

1078-mum-2002-cancelled pages(2-12-2002).pdf

1078-mum-2002-claims(granted)-(2-12-2002).pdf

1078-mum-2002-claims.pdf

1078-mum-2002-correspondence(ipo)(1-2-2005).pdf

1078-mum-2002-correspondence(ipo).pdf

1078-mum-2002-correspondence.pdf

1078-mum-2002-correspondence1(16-1-2003).pdf

1078-mum-2002-correspondence2(30-3-2005).pdf

1078-mum-2002-description(granted).doc

1078-mum-2002-description(granted).pdf

1078-mum-2002-drawing(2-12-2002).pdf

1078-mum-2002-drawing.pdf

1078-mum-2002-form 1(2-12-2002).pdf

1078-mum-2002-form 1.pdf

1078-mum-2002-form 19(11-2-2004).pdf

1078-mum-2002-form 19.pdf

1078-mum-2002-form 2(granted))-(2-12-2002).pdf

1078-mum-2002-form 2(granted).pdf

1078-mum-2002-form 2(title page).pdf

1078-mum-2002-form 3(11-2-2004).pdf

1078-mum-2002-form 3(16-1-2003).pdf

1078-mum-2002-form 3(2-12-2002).pdf

1078-mum-2002-form 3(20-11-2003).pdf

1078-mum-2002-form 3-16-jan-2003.pdf

1078-mum-2002-form 3-20-nov-2003.pdf

1078-mum-2002-form 3.pdf

1078-mum-2002-form 5(11-2-2004).pdf

1078-mum-2002-form 5(2-12-2002).pdf

1078-mum-2002-form 5.pdf

1078-mum-2002-form-2(granted).doc

1078-mum-2002-power of attorney(28-3-2003).pdf

1078-mum-2002-power of attorney.pdf

1078-mum-2002-us patent.pdf

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