OA18334A - Rice thresher machine. - Google Patents

Abstract

The present invention relates to a machine having the particularity of having two simultaneous functions. It threshes the rice to separate the paddy from the straw then the machine recovers the seeds and hulls them. These seeds are at the same time whitened and ready for consumption. This machine can be equipped with an electric or diesel engine. • Cereal (rice) threshing hulling machine according to claim 1 characterized in that it consists of a support, a threshing chamber, and a hulling chamber, all forming a single block.

Description

The present invention relates to a machine having the particularity of having two simultaneous functions.

She threshes the rice to separate the paddy from the straw, then the machine collects the seeds and hulls them. These seeds are at the same time blanched and ready for consumption.

This machine can be equipped with an electric or diesel motor. .

I. PROBLEMS THAT THE INVENTION SEEKS TO SOLVE

- Technical difficulties of cereal processing, especially rice;

- Weak development of the local manufacture of cereal processing machines;

- Difficulties in acquiring spare parts for imported machines;

- Absence on the Senegalese market in particular of a machine combining the two functions of threshing and husking of rice

- Low purchasing power of the peasants not allowing them to use industrial machines.

II. STATE OF THE ART

A. Non-patent documentary sources

- Website www.alibaba.com www.aqricolemall.com www.malijet.com

Works

Eurocode 3 “Mémotech (metallic structures)

B. Patent documentary sources

1. Cover shell of rice -wheat threshing machine

CN 203 49 2435

2. Rice threshing machine CN 103 733816

3. Mechanical feeding type rice and wheat threshing machine

CN 20 382 77 49

4. Multifunctionzl rice znd wheat threshing machine

CN 10 376 6085

5. Rice full and straw conveying apparatus of threshing machine

JPS 5726519

6. Pedaled notaiy-drum rice threshing machine

CN 10 56 846 56

7. Small rice pickup threshing machine

CN 10 3937 09

8. Crawler-belt flat-plate type rice and wheat threshing machine

CN 10 51231 35

9. Rice threshing machine with strong praticality

CN 10 49 044 13

10. Paddy rice threshing machine

CN 2043170 63

11. Diying and conveying device for rice threshing machine and rice threshing machine

CN 20 40 698 05

12. Rice and wheat threshing machine suitable for use on hilly lands

CN 20 34 970 48

13. Rice hulling and polishing machine

JP 2011 025159

14.Rice-hulling an rice-milling combined machine and sample preparation method

CN 102380434

15.Micro rice oiling

CN 2016 44134

NB: Threshing machine

- Threshing machine

- Oil: dehuller (English GB)

- Sheller: sheller (US)

III Description

1. Presentation

The machine object of the invention (Plate I) consists of several 5 components, namely:

2. The support (plate II)

The support keeps the machine at the desired height and allows it to be fixed to the ground avoiding any vibration and disturbing movement.

It is mainly made of 40 square tube and 40x40x4 angle iron.

These different elements are assembled by welding and the motor support is assembled to facilitate the adjustment of the motor and the pulleys.

The threshing chamber (Plate III)

It consists of a feed hopper, an upper part, a drum and a lower part supporting the sieve.

3.1 Table

It is an integral part of the feed hopper. The operator places the straw rice on the table and the straw is pulled by the drum.

3.2 Drum

This subset works in rotation and threshes the rice into a straw. It is driven by the engine through a pulley and a shaft to which reinforcing plates are welded. The drum has spars fitted with pieces of round iron millimeters in diameter as a stick.

3.3 Lower part

It supports the threshing chamber sieve and is connected to the husking chamber by the feed hopper. It has an opening for removing threshed straw. It is assembled by bolting with the upper part of the chamber using two identical flanges fixed on each part.

3.4 Upper part

It supports the threshing chamber feed table. It envelops the drum.

The shelling chamber (Plate IV)

It is composed of a lower part supporting all the accessories such as the rotor, the sieve and an upper part which links it directly to the threshing chamber thanks to the paddy loading hopper.

4.1 Lower part

This part supports the screen and several other parts such as the locking screws, the knife supports and the screen supports. Often cast in cast iron, the lower part must be rigid and tenacious.

4.2 Rotor

The rotor plays an essential role in the husking of rice. It is made up of two parts. The first is located below the hopper and works like the Archimedes screw. She pushes the rice to the other side of the room and makes the change easier. The central part which is provided with horizontal stripes constitutes the essential element which crushes the shell which envelops the rice. In general, the rotor 20 is made of cast iron and by molding.

Unfortunately, our workshops do not have this technology and it would be very expensive to order. The one we have made here is a round tube 78mm in diameter to which pieces of 14mm flat iron are fixed by welding and adjusted by turning.

4.3 Upper part

It is the cover of the husking chamber. It is directly connected to the hopper and maintains the rice feeding and exit devices. This part is often made of cast iron, but the best solution is to make it from very thick sheet steel for countries with a very limited technical environment.

4.4 Hopper

Husked rice is loaded into the hopper of the husking chamber. The hopper acts as a funnel and because of its shape, it not only connects the two chambers (threshing and husking) but also avoids the phenomenon of rice upsetting when the rotor turns. It is supplied continuously by the threshing chamber. It is equipped with a shut-off valve, which is closed when the husking chamber is full.

Working principle

When the machine is running, the rice straw is introduced into the hopper of the threshing chamber. This is equipped with a drum on which are fixed rows of fingers arranged like a sort of Archimedean screw. This device facilitates loading and evacuation of the chamber by preventing jamming. These fingers beat the straw and separate it from the rice.

The drum, by its rotating movement, allows the straw separated from its grains to come out through the open window on the back of the threshing chamber. The paddy, when it enters the sieve and returns to the hopper of the husking chamber. ON entering the husking chamber the paddy rice again faces a rotor which also acts as the screw progresses through the rotor body thanks to the horizontal ridges of the central part of the rotor in a rotating movement. As the rice turns, the grains rub against each other and the space between the knife and the rotor is reduced so that the grains, wanting to pass, separate from their shells. Shelling is then separating the paddy rice from its husk (the husk and the bran). The husked rice is thrown to an orifice in the upper part of the husking chamber where it comes out white while the husk and bran, due to their negligible weight, pass through the holes in the sieve and fall out.

Sizing

We have chosen to size the shaft of the drum in the threshing part because it constitutes for us a part whose role is very decisive in the operating process of the machine. Because of its role, it is subject to several constraints, each of which must be mastered for the machine to operate correctly. Indeed, the sizing that we made of shaft 4 of the drum is a verification calculation.

The drum shaft will be sized statically. It is assumed that it rests on two single supports 755 mm apart. The action of the drum is considered to be a uniformly distributed load with a linear density equal to 0.32 N / mm

The mass of the drum is equal to 32 KG

Or P = mg one chosen g = 1ON / KG

P = 320N q is the linear density q = 320/2015 = 0.315 data: q = 0.32 N / mm

F

AT

iiiiw miv O r X ......... 130 T 755. , 130 -not --- 3A 3B

In A: ball joint

In B: linear connection

Cm: motor torque

R = qxL

Claims (6)

1. Cereal (rice) threshing machine with the particularity of having two simultaneous functions, which are threshing and shelling. 2. Threshing machine hulling cereal (rice) according to claim 1 characterized in that it constitutes a support, a threshing chamber, and a shelling chamber, all forming a single block. 3. Cereal sheller threshing machine according to claim 2 characterized in that the support is ........... 40 cm square tube and 40x40x4 angle assembled by sampling. 4. Cereal threshing machine according to claim 2, characterized in that the threshing chamber is composed of an upper part, a drum and a lower part supporting the sieve. 5. Cereal sheller threshing machine according to claim 2 characterized in that the sheller chamber is composed of a lower part supporting all the accessories and an upper part which links it directly to the threshing chamber thanks to the loading hopper of the paddy. w e SHORT The present invention relates to a machine having the particularity of having two simultaneous functions. 5 She threshes the rice to separate the paddy from the straw, then the machine collects the seeds and hulls them. These seeds are at the same time blanched and ready for consumption. This machine can be equipped with an electric or diesel motor. • Cereal (rice) threshing machine according to claim 1 10 characterized in that it constitutes a support, a threshing chamber, and a hulling chamber, all forming a single block.