CN112156822A

CN112156822A - Rice polishing machine

Info

Publication number: CN112156822A
Application number: CN202010983752.XA
Authority: CN
Inventors: 李涛; 谢鹏辉
Original assignee: Shouxian Inherited Grain And Oil Co ltd
Current assignee: Shouxian Inherited Grain And Oil Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-01-01

Abstract

The invention discloses a rice polishing machine, which comprises: the polishing device comprises a polishing chamber, a polishing device and a control system, wherein the polishing chamber comprises a first polishing chamber and a second polishing chamber, a feeding port is formed in the first polishing chamber, a first filter plate is arranged between the first polishing chamber and the second polishing chamber, a second filter plate is arranged below the second polishing chamber, a rotating motor is arranged above the first polishing chamber, and stirring paddles are arranged in the first polishing chamber and the second polishing chamber through a rotating shaft of the rotating motor; the first rice sieving chamber comprises a first rice sieving plate, a first rice outlet and a first vibrating motor; the second rice sieving chamber comprises a second rice sieving plate, a second rice outlet and a second vibrating motor; a rice bran chamber disposed below the second rice sieving chamber. The polishing device has a good polishing effect, reduces water loss and curing on the surfaces of rice grains, cools the rice grains through the cold air introduced through the dry cold air inlet pipe, and then discharges air with high humidity through the wet air discharge pipe to absorb water on the surfaces of the rice grains, so that the glossiness of the rice grains is improved, and the broken rice rate is reduced.

Description

Rice polishing machine

Technical Field

The invention relates to the technical field of rice processing equipment, in particular to a rice polishing machine.

Background

The rice polishing machine is mainly used in the processing of brown rice, bran powder on the surface layer of rice grains can be removed through polishing, proper polishing can enable starch on the surface of the rice grains to be gelatinized, certain brightness is presented, and the value of rice commodities is improved. The working principle of the polishing machine is that after the brown rice is milled, broken rice and bran pieces are removed, and after the rice is moistened by spraying, a layer of film can be formed on the surface of the rice grains. The existing polishing machine has single function, only can play a polishing role, so that the processing procedure of the brown rice is complicated, and the production efficiency is reduced. Moreover, rice bran on the surface of rice grains cannot be completely removed during polishing, and the temperature is high during polishing, so that the surface of rice grains is denatured.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a rice polishing machine, which solves the problems that part of rice bran remains on rice due to incomplete rice polishing, and the surface of the rice is scalded due to overhigh temperature during polishing.

According to the invention, the rice polishing machine comprises:

the polishing device comprises a polishing chamber, a first polishing chamber and a second polishing chamber, wherein the first polishing chamber is arranged above the second polishing chamber and is in an inverted round table shape, a feeding port is formed in the first polishing chamber, a first filter plate is arranged between the first polishing chamber and the second polishing chamber, a second filter plate is arranged below the second polishing chamber, a rotating motor is arranged above the first polishing chamber, a rotating shaft of the rotating motor penetrates through the polishing chamber and extends to the bottom of the second polishing chamber, stirring paddles are arranged in the first polishing chamber and the second polishing chamber respectively and have a rotating shaft, and the diameter of polishing beads in the first polishing chamber is larger than that of polishing beads in the second polishing chamber;

the first rice sieving chamber comprises a first rice sieving plate, a first rice outlet and a first vibrating motor, the first rice sieving plate is obliquely arranged at the bottom of the first rice sieving chamber, the first rice outlet is arranged at the oblique bottom of the first rice sieving plate, the first vibrating motor is arranged below the oblique top of the first rice sieving plate, and a first rice grain collecting box is arranged at the first rice outlet;

the second rice sieving chamber comprises a second rice sieving plate, a second rice outlet and a second vibrating motor, the second rice sieving plate is obliquely arranged at the bottom of the second rice sieving chamber, the second rice outlet is arranged at the oblique bottom of the second rice sieving plate, the second vibrating motor is arranged below the oblique top of the second rice sieving plate, a second rice grain collecting box is arranged at the second rice outlet, and the second rice sieving chamber is arranged below the first rice drying chamber;

the rice bran chamber is arranged below the second rice sieving chamber, and a rice bran collecting box is arranged below the rice bran chamber.

In some embodiments of the invention, a rice bran side collecting chamber is sleeved outside the polishing chamber, a plurality of small holes are formed in the wall of the polishing chamber, a rice bran lower slide way is reserved between the polishing chamber and the rice bran side collecting chamber, a rice bran discharging port is formed at the bottom of the polishing chamber and the rice bran side collecting chamber, and a first rice bran collecting tank is arranged below the rice bran discharging port.

In other embodiments of the present invention, a dry cooling gas inlet pipe is disposed above the first polishing chamber, and the dry cooling gas inlet pipe is vertically opposite to the first polishing chamber.

In other embodiments of the present invention, the first filter plate and the second filter plate have the same pore size, and the pore size of the first filter plate and the second filter plate is larger than the diameter of rice grains but smaller than the diameter of polishing beads in the second polishing chamber.

In other embodiments of the present invention, the first sieve rice chamber is provided with a wet air discharging pipe, the wet air discharging pipe is obliquely arranged and has the same inclination as the first sieve rice plate, and the wet air discharging pipe is arranged on the wall of the first sieve rice chamber at the inclined top of the first sieve rice plate.

In other embodiments of the invention, the first sieve rice plate has a pore size smaller than the diameter of whole rice grains but larger than the diameter of broken rice grains, the first sieve rice plate has a pore size of 3-5mm, the second sieve rice plate has a pore size smaller than the diameter of broken rice grains, and the second sieve rice plate has a pore size of 1-1.5 mm.

In other embodiments of the present invention, the first and second perforated rice sheets are inclined at opposite angles, and the first and second perforated rice sheets are inclined at an angle of 15-30 °.

In other embodiments of the present invention, the first holes disposed on the first sieve plate and the second sieve plate have a trapezoidal cross section, and the long bottom edge of the trapezoidal cross section faces downward.

In other embodiments of the present invention, a first polishing bead outflow door is provided at one side of the first polishing chamber, and a second polishing bead outflow door is provided at the bottom of the second polishing chamber.

According to the rice polishing device, rice grains are added into the first polishing chamber, polishing beads with large diameters are used for polishing the rice grains, so that rice bran on the surfaces of the rice grains fall off, then polishing beads with small diameters in the second polishing chamber are used for thoroughly polishing the fallen rice grains to remove the rice bran, the polishing effect is good, and the number of broken rice can be reduced. The burnishing and polishing process produces the heat, need cool down, the water spray to the grain of rice, reduces the surperficial desiccation of grain of rice, curing, lets in the air that the pipe let in through dry air conditioning and cools down the grain of rice, then lets in the great air of humidity through humid air admission pipe and supply the grain of rice surface to absorb water, then screens broken rice and rice bran again, reaches the whole grain recovery effect of polished rice.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a rice polishing machine according to the present invention.

FIG. 2 is a schematic view of the polishing chamber and the rice bran recycling chamber according to the present invention.

FIG. 3 is a schematic view of the bottom structure of the polishing chamber according to the present invention.

Fig. 4 is a schematic cross-sectional view of the first filter plate or the second filter plate according to the present invention.

In the figure: 1. rotating the motor; 2. a first polishing chamber; 20. a first filter plate; 201. a first hole; 21. a feeding port; 22. a dry cold air inlet pipe; 3. a second polishing chamber; 30. a second filter plate; 301. a second polishing bead outflow gate; 4. a polishing chamber; 41. a small hole; 5. a rice bran side-collecting chamber; 51. a rice bran glide path; 52. a rice bran discharge port; 53. a first rice bran collecting tank; 54. a first polishing bead outflow gate; 6. a first rice sieving chamber; 61. a first rice outlet; 62. a first rice grain collection box; 63. a first rice sieving plate; 631. a first vibration motor; 7. a second rice sieving chamber; 71. a second rice outlet; 72. a second rice grain collection box; 73. a second rice sieving plate; 731. a second vibration motor; 64. a humid air discharge pipe; 8. a rice bran chamber; 81. a rice bran collecting box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1-2, the present invention provides a rice polishing machine, comprising:

the polishing device comprises a polishing chamber 4, wherein the polishing chamber 4 comprises a first polishing chamber 2 and a second polishing chamber 3, the first polishing chamber 2 is arranged above the second polishing chamber 3, the polishing chamber 4 is in an inverted circular truncated cone shape, a material inlet 21 is formed in the first polishing chamber 2, a first filter plate 20 is arranged between the first polishing chamber 2 and the second polishing chamber 3, a second filter plate 30 is arranged below the second polishing chamber 3, a rotating motor 1 is arranged above the first polishing chamber 2, a rotating shaft of the rotating motor 1 penetrates through the polishing chamber 4 and extends to the bottom of the second polishing chamber 3, stirring paddles are arranged in the first polishing chamber 2 and the second polishing chamber 3 through the rotating shaft of the rotating motor 1, and the diameter of polishing beads in the first polishing chamber 2 is larger than that of polishing beads in the second polishing chamber 3;

the first rice sieving chamber 6 comprises a first rice outlet 61 and a first vibrating motor 631, the first rice sieving plate 63 is obliquely arranged at the bottom of the first rice sieving chamber 6, the first rice outlet 61 is arranged at the oblique bottom of the first rice sieving plate 63, the first vibrating motor 631 is arranged below the oblique top of the first rice sieving plate 63, and a first rice grain collecting box 62 is arranged at the first rice outlet 61;

the second rice sieving chamber 7 comprises a second rice sieving plate 73, a second rice outlet 71 and a second vibrating motor 731, the second rice sieving plate 73 is obliquely arranged at the bottom of the second rice sieving chamber 7, the second rice outlet 71 is arranged at the oblique bottom of the second rice sieving plate 73, the second vibrating motor 731 is arranged below the oblique top of the second rice sieving plate 73, a second rice grain collecting box 72 is arranged at the second rice outlet 71, and the second rice sieving chamber 7 is arranged below the first rice airing chamber 6;

a rice bran chamber 8, wherein the rice bran chamber 8 is arranged below the second rice sieving chamber 7, and a rice bran collecting box 81 is arranged below the rice bran chamber 8.

The polishing chamber 4 is in an inverted round table shape, so that the polishing beads can be stirred conveniently to roll, and rice grains can move downwards to penetrate through the first polishing chamber 2 and the second polishing chamber 3 during stirring and polishing. Rice grains are polished by polishing beads to remove rice bran, if the diameter of the polishing beads is small, rice bran breaking is difficult in the early stage of the rice grains, large polishing beads are needed to break the rice bran, but gaps among the large polishing beads are large, so that the rice grains cannot be subjected to comprehensive skin breaking treatment, and further skin breaking and polishing are needed, therefore, secondary polishing beads are adopted to carry out polishing, and the skin breaking treatment is completed. While rice grains can completely pass through the pores of the first filter plate 20 and the second filter plate 30, but the polishing beads cannot.

Broken rice and rice bran can appear in the rice grain of throwing light, and when rice grain and rice bran fall into first sieve rice board 63 of first sieve rice room 6 on, first vibrating motor 631 vibrates first sieve rice board 63, falls into second sieve rice room 7 with broken rice and rice bran from the hole of first sieve rice board 63 in, and the first sieve rice board 63 that the slope set up is favorable to the rice grain to slide into first rice mouth 61 and get into in the first rice grain collection box 62 from it.

The crushed rice and the rice bran are separated, and the second vibration motor 731 vibrates the second rice sieving plate 73 to vibrate the rice bran from the second rice sieving plate 73 into the rice bran chamber 8 and into the rice bran collecting box 81. And the broken rice slides from the inclined second sieve plate 73 into the second outlet 71 and into the second rice-grain collecting box 72.

The rice bran collecting chamber 5 is sleeved outside the polishing chamber 4, a plurality of small holes 41 are formed in the wall of the polishing chamber 4, a rice bran lower slide way 51 is reserved between the polishing chamber 4 and the rice bran collecting chamber 5, a rice bran discharge hole 52 is formed in the bottom of the polishing chamber 4 and the rice bran collecting chamber 5, and a first rice bran collecting tank 53 is arranged below the rice bran discharge hole 52.

Because adopt the polishing pearl to polish the grain of rice, the rice bran is difficult for moving down, easily glues on the polishing pearl, piles up easily, consequently, has designed to be equipped with a plurality of apertures 41 on the wall of polishing chamber 4, and the polishing pearl will be glued rice bran propelling movement on it and enter into rice bran glide slope 51 in the aperture, and the rice bran that greatly reduces piles up at polishing chamber 4, and the rice bran falls to rice bran discharge gate 52 and enters into the rice bran collecting vat 53 from the rice bran glide slope 51 other than polishing chamber 4 and carries out partial rice bran and collect.

A dry cold air inlet pipe 22 is arranged above the first polishing chamber 2, and the dry cold air inlet pipe 22 is vertically opposite to the first polishing chamber 2.

As the rice grains in the polishing chamber are heated, the surfaces of the rice grains are aged and denatured. And introducing cold air to cool the polishing chamber 4, so that the temperature of the polishing beads is reduced, and the temperature rise of rice grains is reduced.

The first filter plate 20 and the second filter plate 30 have the same pore size, and the pore size of the first filter plate 20 and the second filter plate 30 is larger than the diameter of rice grains but smaller than the diameter of polishing beads of the second polishing chamber 3.

The first filter plate 20 is to block the polishing beads in the first polishing chamber 2 from falling, and has a smaller pore size than the polishing beads, but to ensure that the grains of rice fall. The second filter plate 30 also ensures that grains of rice fall, and thus, the same pore size is used for the first filter plate 20 and the second filter plate 30, and polishing beads in the second polishing chamber 3 cannot fall.

A wet air discharging pipe 64 is arranged in the first rice sieving chamber 6, the wet air discharging pipe 64 is obliquely arranged and has the same inclination as the first rice sieving plate 63, and the wet air discharging pipe 64 is arranged on the wall of the first rice sieving chamber 6 at the inclined top of the first rice sieving plate 63.

As rice grains are polished to remove rice bran, part of water is lost, so that the rice grains crack and broken rice is increased. Therefore, the wet air is introduced to absorb the water of the rice grains, and the water content of the rice grains is improved.

The aperture of the first rice sieving plate 63 is smaller than the diameter of whole grains but larger than the diameter of broken grains, the aperture of the first rice sieving plate 63 is 3-5mm, the aperture of the second rice sieving plate 73 is smaller than the diameter of broken grains, and the aperture of the second rice sieving plate 73 is 1-1.5 mm.

Broken rice needs to be screened out, the quality of polished rice is improved, and therefore broken rice screening and rice bran screening are arranged. According to different kinds of rice, the aperture of the first rice sieving plate 63 is set to be 3-5mm, the diameter of rice grains is small, the aperture of 3mm is selected, and the aperture of 5mm can be selected for larger rice grains. The particle size of broken rice is generally larger than 2mm and smaller than 3mm, and the second rice sieving plate 73 mainly ensures that the rice bran falls and the broken rice is recovered.

The inclination angles of the first rice sieving plate 63 and the second rice sieving plate 73 are opposite, and the inclination angles of the first rice sieving plate 63 and the second rice sieving plate 73 are 15-30 degrees. The inclination angle is between 15 and 30 degrees, which is beneficial to the rice grains to slide downwards, and meanwhile, the rice bran falling from the first holes 201 is not influenced. Especially at 20 deg..

The first holes 201 formed in the first rice sieving plate 63 and the second rice sieving plate 73 are trapezoidal in section, and the long bottom edge of the trapezoid faces downwards. After the rice bran enters the first holes 201, the rice bran cannot be blocked due to the fact that the aperture of the upper portion is small and the aperture of the lower portion is large.

A first polishing bead outflow door 54 is provided at one side of the first polishing chamber 2, and a second polishing bead outflow door 301 is provided at the bottom of the second polishing chamber 3. The polishing beads are periodically replaced, and the insert plate of the first polishing bead outflow gate 54 or the second polishing bead outflow gate 301 is opened, and the polishing beads flow out through the outflow gates. The first filter plate 20 can be pulled upward, and then new polishing beads are poured into the second polishing chamber 3, and finally the first filter plate 20 is covered, and then the polishing beads in the first polishing chamber 2 are replaced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a rice polishing machine which characterized in that: the method comprises the following steps:

a polishing chamber (4), the polishing chamber (4) comprising a first polishing chamber (2) and a second polishing chamber (3), the first polishing chamber (2) is arranged above the second polishing chamber (3), the polishing chamber (4) is in an inverted round table shape, a feeding port (21) is arranged on the first polishing chamber (2), a first filter plate (20) is arranged between the first polishing chamber (2) and the second polishing chamber (3), a second filter plate (30) is arranged below the second polishing chamber (3), a rotating motor (1) is arranged above the first polishing chamber (2), the rotating shaft of the rotating motor (1) penetrates through the polishing chamber (4) and extends to the bottom of the second polishing chamber (3), the rotating shaft of the rotating motor (1) is provided with stirring paddles in the first polishing chamber (2) and the second polishing chamber (3), the diameter of the polishing beads in the first polishing chamber (2) is larger than that of the polishing beads in the second polishing chamber (3);

the first rice sieving chamber (6) comprises a first rice sieving plate (63), a first rice outlet (61) and a first vibrating motor (631), the first rice sieving plate (63) is obliquely arranged at the bottom of the first rice sieving chamber (6), the first rice outlet (61) is arranged at the oblique bottom of the first rice sieving plate (63), the first vibrating motor (631) is arranged below the oblique top of the first rice sieving plate (63), and a first rice grain collecting box (62) is arranged at the first rice outlet (61);

the second rice sieving chamber (7) comprises a second rice sieving plate (73), a second rice outlet (71) and a second vibrating motor (731), the second rice sieving plate (73) is obliquely arranged at the bottom of the second rice sieving chamber (7), the second rice outlet (71) is arranged at the oblique bottom of the second rice sieving plate (73), the second vibrating motor (731) is arranged below the oblique top of the second rice sieving plate (73), a second rice grain collecting box (72) is arranged at the second rice outlet (71), and the second rice sieving chamber (7) is arranged below the first rice airing chamber (6);

the rice bran screening device comprises a rice bran chamber (8), wherein the rice bran chamber (8) is arranged below a second rice screening chamber (7), and a rice bran collecting box (81) is arranged below the rice bran chamber (8).

2. The rice polishing machine according to claim 1, wherein: polishing room (4) overcoat has rice bran side to receive room (5), be equipped with a plurality of apertures (41) on the wall of polishing room (4), leave rice bran glide slope (51) between room (5) are received to polishing room (4) and rice bran side, the bottom of room (5) is received to polishing room (4) and rice bran side is equipped with rice bran discharge gate (52), rice bran discharge gate (52) have first rice bran collecting vat (53).

3. The rice polishing machine according to claim 1, wherein: and a dry cold air inlet pipe (22) is arranged above the first polishing chamber (2), and the dry cold air inlet pipe (22) is vertically opposite to the first polishing chamber (2).

4. The rice polishing machine according to claim 1, wherein: the pore size on first filter (20) and the second filter (30) is the same, the pore size is greater than the grain of rice diameter on first filter (20) and the second filter (30), but is less than the diameter of second polishing room (3) polishing pearl.

5. The rice polishing machine according to claim 1, wherein: a wet air discharging pipe (64) is arranged in the first rice sieving chamber (6), the wet air discharging pipe (64) is arranged in an inclined mode, the inclination of the wet air discharging pipe is the same as that of the first rice sieving plate (63), and the wet air discharging pipe (64) is arranged on the wall of the first rice sieving chamber (6) at the inclined top of the first rice sieving plate (63).

6. The rice polishing machine according to claim 1, wherein: the aperture of the first rice sieving plate (63) is smaller than the diameter of whole grains but larger than the diameter of broken grains, the aperture of the first rice sieving plate (63) is 3-5mm, the aperture of the second rice sieving plate (73) is smaller than the diameter of broken grains, and the aperture of the second rice sieving plate (73) is 1-1.5 mm.

7. The rice polishing machine according to claim 1, wherein: the inclination angles of the first rice sieving plate (63) and the second rice sieving plate (73) are opposite, and the inclination angles of the first rice sieving plate (63) and the second rice sieving plate (73) are 15-30 degrees.

8. The rice polishing machine according to claim 1, wherein: the cross section of a first hole (201) formed in the first rice sieving plate (63) and the second rice sieving plate (73) is trapezoidal, and the long bottom edge of the trapezoid faces downwards.

9. The rice polishing machine according to claim 1, wherein: one side of the first polishing chamber (2) is provided with a first polishing bead outflow door (54), and the bottom of the second polishing chamber (3) is provided with a second polishing bead outflow door (301).