CN113244978A

CN113244978A - Polishing rice cooling system

Info

Publication number: CN113244978A
Application number: CN202110566948.3A
Authority: CN
Inventors: 宋海斌
Original assignee: Foshan Yufuyuan Rice Industry Co ltd
Current assignee: Foshan Yufuyuan Rice Industry Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-08-13
Anticipated expiration: 2041-05-24
Also published as: CN113244978B

Abstract

The invention provides a polished rice cooling system, which comprises a feeding part, a weighing part, a polishing part, a control terminal, a discharging part and a precooling part, wherein the feeding part is communicated with the polishing part, the polishing part comprises a shell, a first polishing roller, a first filtering sieve plate, a second polishing roller and a second filtering sieve plate, the shell is provided with a first polishing space and a second polishing space, the amount of rice entering the polishing part at one time is controlled by additionally arranging the weighing part, the polishing roller is arranged for polishing the rice in multiple stages, the polishing effect is improved, meanwhile, cooling water is provided for the polishing part by the precooling part, and a data acquisition end and a display end are additionally arranged, so that the operation parameters of each part in the polishing process can be visually displayed, technicians can conveniently find problems generated in the polishing process and adjust the parameters in time, and a motion control end is used for controlling the weighing part, The polishing component, the discharging component and the pre-cooling component are used for improving the polishing effect of the rice.

Description

Polishing rice cooling system

Technical Field

The invention relates to the technical field of grain processing, in particular to a polishing rice cooling system.

Background

The rice processing process generally comprises a series of procedures such as cleaning, hulling, separating rice from brown rice, milling rice, polishing, grading white rice, color sorting and the like. At present, the polishing method is mainly a film method, namely, starch grains on the surface of rice are converted into a gelatinized starch film wrapping rice grains through pre-gelatinization by using heat generated by the mechanical acting force of a polishing machine and added water; the prior art has a common single polishing effect, usually needs several polishing processes to reach the corresponding delivery standard, and has higher production cost.

Disclosure of Invention

The invention mainly aims to provide a rice polishing and cooling system, and aims to solve the problem that in the prior art, the polishing effect of a polishing machine in the rice production and polishing process is poor.

In order to achieve the purpose, the technical scheme provided by the invention is as follows: a polished rice cooling system comprises a feeding part, a weighing part, a polishing part, a control terminal, a discharging part and a precooling part, wherein the feeding part is communicated with the polishing part, the polishing part comprises a shell, a first polishing roller, a first filtering sieve plate, a second polishing roller and a second filtering sieve plate, the shell is provided with a first polishing space and a second polishing space, the first filtering sieve plate is contained in the first polishing space, the second filtering sieve plate is contained in the second polishing space, the first filtering sieve plate surrounds a first polishing chamber, the first polishing roller is contained in the first polishing chamber, the second filtering sieve plate surrounds a second polishing chamber, and the second polishing roller is contained in the second polishing chamber; the first polishing chamber is communicated with the feeding part, the first polishing space is communicated with the second polishing chamber, the second polishing chamber is communicated with the discharging part, and the precooling part is used for providing cooling water for the first polishing space and the second polishing space; the rice quantity measuring device comprises a weighing component, a feeding component, a control terminal and a movement control end, wherein the weighing component is fixedly connected with the feeding component and used for controlling the quantity of rice conveyed to a first polishing chamber by the feeding component, the control terminal comprises a data acquisition end, a movement control end and a display end, the data acquisition end is electrically connected with the display end, the data acquisition end is respectively electrically connected with the weighing component, the polishing component, a discharging component and a precooling component, the operation data of each component is converted into polishing parameters and displayed through the display end, and the movement control end is used for controlling the movement of the weighing component, the polishing component, the discharging component and the precooling component.

Preferably, the polished rice cooling system further comprises a driving part, the driving part comprises a first driving motor and a second driving motor, the first driving motor is used for driving the first polishing roller to rotate, the second driving motor is used for driving the second polishing roller to rotate, and the driving part is respectively electrically connected with the data acquisition end and the motion control end.

Preferably, the pan feeding part includes hopper, conduction pipe and many connecting rods, the hopper is used for the pan feeding, the conduction pipe with be formed with between the hopper and accept the clearance, the conduction pipe with first polishing chamber intercommunication, many the connecting rod be used for with the hopper with shell fixed connection.

Preferably, the hopper is formed with the material along, weighing device includes spring, scraper bowl pressure sensor, link, accepts the scraper bowl and drives actuating cylinder, drive actuating cylinder's one end with the material is along the orientation one side of conduction pipe is articulated, drive actuating cylinder's the other end with one side of link is articulated, the link orientation one side of hopper is formed with the connection and embraces the arm, the connection embrace the arm with the hopper is articulated, accept the scraper bowl one end with the link deviates from drive actuating cylinder's one side fixed connection, accept the scraper bowl be used for with accept clearance fit in order to seal or open the hopper, scraper bowl pressure sensor accept in accept the scraper bowl, scraper bowl pressure sensor with the data acquisition end electricity is connected, drive actuating cylinder with the control terminal electricity is connected.

Preferably, the precooling part includes first flow sensor, ultrasonic atomizer, cooler bin, temperature sensor and fan, the cooler bin is used for acceping the cooling water and controls the temperature of cooling water, ultrasonic atomizer accept in the cooler bin, ultrasonic atomizer is used for atomizing the cooling water, the fan with the cooler bin passes through the pipe connection, the fan is used for with atomizing the cooling water is carried extremely first polishing space, the cooler bin with the control terminal electricity is connected, the fan with the control terminal electricity is connected, first flow sensor set up in the pipeline, just first flow sensor with the data acquisition end electricity is connected, temperature sensor accept in the cooler bin, just temperature sensor with the data acquisition end electricity is connected.

Preferably, ejection of compact part includes ejection of compact driving motor, ejection of compact fan and ejection of compact shell, ejection of compact shell with shell fixed connection, ejection of compact shell forms ejection of compact space, ejection of compact space with second polishing space intercommunication, ejection of compact fan is acceptd in the ejection of compact space, ejection of compact driving motor's output shaft passes ejection of compact shell with the axle center fixed connection of ejection of compact fan, ejection of compact shell still is formed with discharging hole, discharging hole link up with the outside, the setting of ejection of compact fan is in ejection of compact space deviates from one side of discharging hole is in order to prevent to destroy the grain of rice.

Preferably, the first filtering sieve plate is formed with a first filtering sieve hole, and an angle between the first filtering sieve hole and the rotation direction of the first polishing roller in the clockwise direction is an acute angle.

Preferably, the second filtering sieve plate is formed with a second filtering sieve hole, and an angle between the second filtering sieve hole and the rotation direction of the second polishing roller in the clockwise direction is an obtuse angle.

Preferably, the receiving bucket includes an upper bucket and a lower bucket, and the bucket pressure sensor is interposed between the upper bucket and the lower bucket.

Preferably, the discharging part further comprises a second flow monitoring sensor, a vent hole is further formed in one side, deviating from the discharging through hole, of the discharging shell, and the second flow monitoring sensor is used for monitoring the air flow passing through the vent hole.

Compared with the prior art, the invention at least has the following beneficial effects:

according to the technical scheme, the polishing rice cooling system controls the amount of rice entering a polishing part at one time by additionally arranging the weighing part, and is provided with a plurality of polishing rollers for polishing the rice in multiple stages, so that the polishing effect is improved, meanwhile, the precooling part is used for providing cooling water for the polishing part, and a data acquisition end and a display end are additionally arranged, so that the operation parameters of each part in the polishing process can be visually displayed, technicians can find problems in the polishing process and adjust the parameters in time, and meanwhile, the motion control end is additionally arranged for controlling the motion of the weighing part, the polishing part, the discharging part and the precooling part, so that the polishing effect of the rice is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a rice-cooling polishing system according to the present invention;

FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic structural diagram of a feeding part and a weighing part of the polished rice cooling system according to the present invention;

FIG. 4 is an enlarged cross-sectional view taken at A in FIG. 3;

FIG. 5 is a schematic top view of a first filtering screen plate of the polished rice cooling system according to the present invention;

fig. 6 is a schematic top view of a second filtering sieve plate of the polished rice cooling system according to the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Feeding part	17	Connecting rod
2	Weighing unit	18	Material edge
				3	Polishing member	19	Connecting frame
4	Discharging component	20	Receiving bucket
				5	Precooling component	21	Driving cylinder
6	Outer casing	22	Bucket pressure sensor
				7	First polishing roll	23	Connecting clampArm(s)
8	First filtering sieve plate	24	Discharging driving motor
				9	Second polishing roll	25	Discharging fan
10	Second filtering sieve plate	26	Discharging shell
				11	A first polishing space	27	Discharge through hole
12	Second polishing space	28	Vent hole
				13	A first polishing chamber	29	First filtering sieve pore
14	Second polishing chamber	30	Second filter mesh
				15	Hopper	31	Upper bucket
16	Conduction pipe	32	Lower bucket

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a polishing rice cooling system.

Referring to fig. 1 to 6, a rice-cooling polishing system comprises a feeding unit 1, a weighing unit 2, a polishing unit 3, a control terminal, a discharging unit 4 and a pre-cooling unit 5, the feeding part 1 is communicated with the polishing part 3, the polishing part 3 comprises a shell 6, a first polishing roller 7, a first filtering sieve plate 8, a second polishing roller 9 and a second filtering sieve plate 10, the shell 6 is provided with a first polishing space 11 and a second polishing space 12, the first filter sieve plate 8 is accommodated in the first polishing space 11, the second filtering sieve plate 10 is accommodated in the second polishing space 12, the first filtering sieve plate 8 encloses a first polishing chamber 13, the first polishing roll 7 is accommodated in the first polishing chamber 13, the second filter sieve plate 10 encloses a second polishing chamber 14, and the second polishing roll 9 is accommodated in the second polishing chamber 14; the first polishing chamber 13 is communicated with the feeding part 1, the first polishing space 11 is communicated with the second polishing chamber 14, the second polishing chamber 14 is communicated with the discharging part 4, and the pre-cooling part 5 is used for providing cooling water for the first polishing space 11 and the second polishing space 12; the weighing part 2 is fixedly connected with the feeding part 1, the weighing part 2 is used for controlling the rice quantity conveyed to the first polishing chamber 13 by the feeding part 1, the control terminal comprises a data acquisition end, a motion control end and a display end, the data acquisition end is electrically connected with the display end, the data acquisition end is respectively and electrically connected with the weighing part 2, the polishing part 3, the discharging part 4 and the precooling part 5, the operation data of each part is converted into polishing parameters and displayed through the display end, and the motion control end is used for controlling the motion of the weighing part 2, the polishing part 3, the discharging part 4 and the precooling part 5.

Through adding and establishing weighing part 2 controls the rice volume that once gets into polishing part 3 to set up many polishing rollers and carry out multistage polishing to the rice, promoted polishing effect, simultaneously through precooling part 5 does polishing part 3 provides the cooling water, and add and establish data acquisition end with the display end for the operating parameter of each part in the polishing process can audio-visually be shown, and the technical staff of being convenient for discovers the problem that takes place among the polishing process and in time adjusts the parameter, adds simultaneously motion control end is used for controlling weighing part 2, polishing part 3, ejection of compact part 4 with precooling part 5's motion, in order to promote the polishing effect of rice.

Preferably, the rice polishing and cooling system further comprises a driving part, the driving part comprises a first driving motor and a second driving motor, the first driving motor is used for driving the first polishing roller 7 to rotate, the second driving motor is used for driving the second polishing roller 9 to rotate, and the driving part is respectively electrically connected with the data acquisition end and the motion control end; specifically, the method comprises the following steps: the first driving motor and the second driving motor are both servo motors, the rotating pulse of the first driving motor is converted into a first rotating parameter through the data acquisition end, and the first rotating parameter is transmitted to the display end to be displayed; and the rotation pulse of the second driving motor is converted into a second rotation parameter through the data acquisition end, and the second rotation parameter is transmitted to the display end for display.

Specifically, the motion control end is configured to control a rotation speed of the first driving motor to control a pressure applied to the rice in the first polishing chamber 13, and the motion control end is further configured to control a rotation speed of the second driving motor to control a pressure applied to the rice in the second polishing chamber 14.

Preferably, the feeding part 1 comprises a hopper 15, a conducting pipe 16 and a plurality of connecting rods 17, the hopper 15 is used for feeding, a receiving gap is formed between the conducting pipe 16 and the hopper 15, the conducting pipe 16 is communicated with the first polishing chamber 13, and the plurality of connecting rods 17 are used for fixedly connecting the hopper 15 and the housing 6.

Preferably, the hopper 15 is formed with a rim 18, the weighing means comprise springs, a bucket pressure sensor 22, a connecting frame 19, a receiving bucket 20 and a driving cylinder 21, one end of the driving cylinder 21 is hinged with one side of the material rim 18 facing the conduction pipe 16, the other end of the driving cylinder 21 is hinged with one side of the connecting frame 19, a connecting holding arm 23 is formed on one side of the connecting frame 19 facing the hopper 15, the connecting arm 23 is hinged with the hopper 15, one end of the receiving bucket 20 is fixedly connected with one side of the connecting frame 19 departing from the driving cylinder 21, the receiving bucket 20 is adapted to engage with the receiving clearance to close or open the hopper 15, the bucket pressure sensor 22 is accommodated in the receiving bucket 20, the bucket pressure sensor 22 is electrically connected with the data acquisition end, and the driving cylinder 21 is electrically connected with the control terminal.

Specifically, the receiving gap is longer than the thickness of the receiving bucket 20, the receiving bucket 20 is arc-shaped, so that the pressure applied by the rice in the closed state is concentrated at the lowest point of the arc, and the bucket pressure sensor 22 is arranged at the lowest point of the arc when the receiving bucket 20 closes the hopper 15, so as to increase the measurement accuracy of the bucket pressure sensor 22; the motion control component is used for controlling the drive cylinder 21 to move so as to open or close the hopper 15.

The bucket pressure sensor 22 converts the first pressure signal into a first electric signal and transmits the first electric signal to the data acquisition end, and the data acquisition end converts the first electric signal into a rice weight parameter and transmits the rice weight parameter to the display end for display.

Preferably, precooling part 5 includes first flow sensor, ultrasonic nebulizer, cooler bin, temperature sensor and fan, the cooler bin is used for acceping the cooling water and controls the temperature of cooling water, ultrasonic nebulizer accept in the cooler bin, ultrasonic nebulizer is used for atomizing the cooling water, the fan with the cooler bin passes through the pipe connection, the fan is used for with atomizing the cooling water is carried extremely first polishing space 11, the cooler bin with the control terminal electricity is connected, the fan with the control terminal electricity is connected, first flow sensor set up in the pipeline, just first flow sensor with the data acquisition end electricity is connected, temperature sensor accept in the cooler bin, just temperature sensor with the data acquisition end electricity is connected.

Specifically, the ultrasonic atomizer is electrically connected with the motion control part, the fan is electrically connected with the motion control part, the motion control part controls the atomization amount by controlling the power of the ultrasonic atomizer, and controls the output amount of the gas by controlling the power of the fan.

The first flow sensor transmits first gas flow data passing through the fan to the data acquisition end, and the first gas flow data is converted into flow parameters through the data acquisition end and displayed on the display end.

Preferably, the discharging part 4 comprises a discharging driving motor 24, a discharging fan 25 and a discharging shell 26, the discharging shell 26 is fixedly connected with the housing 6, the discharging shell 26 forms a discharging space, the discharging space is communicated with the second polishing space 12, the discharging fan 25 is accommodated in the discharging space, an output shaft of the discharging driving motor 24 passes through the discharging shell 26 and is fixedly connected with an axis of the discharging fan 25, a discharging through hole 27 is further formed in the discharging shell 26, the discharging through hole 27 is communicated with the outside, and the discharging fan 25 is arranged on one side of the discharging space, which is far away from the discharging through hole 27, so as to prevent rice grains from being damaged; further, the discharging driving motor 24 is electrically connected with the motion control end, and the motion control end controls the discharging fan.

Preferably, the first filtering sieve plate 8 is formed with a first filtering sieve hole 29, an angle between the first filtering sieve hole 29 and the rotation direction of the first polishing roller 7 in the clockwise direction is an acute angle, and when an angle between the rotation direction of the first polishing roller 7 and the first filtering sieve hole 29 is an acute angle, the pressure applied to the rice in the first polishing chamber 13 is small.

Preferably, the second filtering sieve plate 10 is formed with a second filtering sieve hole 30, an angle between the second filtering sieve hole 30 and the rotation direction of the second polishing roller 9 in the clockwise direction is an obtuse angle, and when an included angle between the rotation direction of the second polishing roller 9 and the second filtering sieve hole 30 is a blunt angle, the pressure applied to the rice in the second polishing chamber 14 is relatively large.

Further, it is equipped with first pressure sensor to press from both sides in the first filter sieve 8, the second filters and presss from both sides in the sieve 10 and is equipped with second pressure sensor, first pressure sensor with second pressure sensor all with data acquisition terminal electricity is connected in order to detect first filter sieve 8 with the rice pressure in the sieve 10 is filtered to the second.

Preferably, the receiving bucket 20 includes an upper bucket 31 and a lower bucket 32, the bucket pressure sensor 22 is interposed between the upper bucket 31 and the lower bucket 32, and the upper bucket 31 directly receives pressure generated by accumulation of rice and is deformed to a certain extent to transmit the pressure to the bucket pressure sensor 22.

Preferably, the discharging part 4 further comprises a second flow monitoring sensor, a vent hole 28 is further opened on one side of the discharging shell 26 facing away from the discharging through hole 27, and the second flow monitoring sensor is used for monitoring the air flow passing through the vent hole 28; the second flow sensor transmits the second gas flow data passing through the vent 28 to the data acquisition end, and the second gas flow data is converted into flow parameters through the data acquisition end and displayed on the display end.

Furthermore, the control terminal also comprises a data storage end, wherein the data storage end is used for storing various parameters and changes thereof in the whole polishing process from feeding to discharging, so that technicians can compare the summary parameters and adjust the operation of the driving part, and finally the polishing quality of the rice is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A polished rice cooling system is characterized by comprising a feeding part, a weighing part, a polishing part, a control terminal, a discharging part and a precooling part, wherein the feeding part is communicated with the polishing part, the polishing part comprises a shell, a first polishing roller, a first filtering sieve plate, a second polishing roller and a second filtering sieve plate, the shell is provided with a first polishing space and a second polishing space, the first filtering sieve plate is contained in the first polishing space, the second filtering sieve plate is contained in the second polishing space, the first filtering sieve plate surrounds a first polishing chamber, the first polishing roller is contained in the first polishing chamber, the second filtering sieve plate surrounds a second polishing chamber, and the second polishing roller is contained in the second polishing chamber; the first polishing chamber is communicated with the feeding part, the first polishing space is communicated with the second polishing chamber, the second polishing chamber is communicated with the discharging part, and the precooling part is used for providing cooling water for the first polishing space and the second polishing space; the rice quantity measuring device comprises a weighing component, a feeding component, a control terminal and a movement control end, wherein the weighing component is fixedly connected with the feeding component and used for controlling the quantity of rice conveyed to a first polishing chamber by the feeding component, the control terminal comprises a data acquisition end, a movement control end and a display end, the data acquisition end is electrically connected with the display end, the data acquisition end is respectively electrically connected with the weighing component, the polishing component, a discharging component and a precooling component, the operation data of each component is converted into polishing parameters and displayed through the display end, and the movement control end is used for controlling the movement of the weighing component, the polishing component, the discharging component and the precooling component.

2. The system for polishing cool rice according to claim 1, further comprising a driving component, wherein the driving component comprises a first driving motor and a second driving motor, the first driving motor is used for driving the first polishing roller to rotate, the second driving motor is used for driving the second polishing roller to rotate, and the driving component is electrically connected with the data acquisition end and the motion control end respectively.

3. The system for polishing cool rice as claimed in claim 1, wherein the feeding part comprises a hopper, a conducting pipe and a plurality of connecting rods, the hopper is used for feeding, a receiving gap is formed between the conducting pipe and the hopper, the conducting pipe is communicated with the first polishing chamber, and the connecting rods are used for fixedly connecting the hopper with the housing.

4. A polished rice cooling system as claimed in claim 3, wherein the hopper is formed with a rim, the weighing device comprises a spring, a bucket pressure sensor, a connecting frame, a receiving bucket and a driving cylinder, one end of the driving cylinder is hinged with one side of the material edge facing the conduction pipe, the other end of the driving cylinder is hinged with one side of the connecting frame, one side of the connecting frame facing the hopper is provided with a connecting embracing arm which is hinged with the hopper, one end of the receiving bucket is fixedly connected with one side of the connecting frame, which is far away from the driving cylinder, the receiving bucket is used for being in clearance fit with the receiving bucket to close or open the hopper, the bucket pressure sensor is contained in the receiving bucket, the bucket pressure sensor is electrically connected with the data acquisition end, and the driving cylinder is electrically connected with the control terminal.

5. The polished rice cooling system of claim 1, wherein the pre-cooling unit comprises a first flow sensor, an ultrasonic atomizer, a cooling tank, a temperature sensor and a fan, the cooling tank is used for containing cooling water and controlling the temperature of the cooling water, the ultrasonic atomizer is contained in the cooling tank, the ultrasonic atomizer is used for atomizing the cooling water, the fan is connected with the cooling box through a pipeline, the fan is used for conveying the atomized cooling water to the first polishing space, the cooling box is electrically connected with the control terminal, the fan is electrically connected with the control terminal, the first flow sensor is arranged in the pipeline, and the first flow sensor is electrically connected with the data acquisition end, the temperature sensor is contained in the cooling box, and the temperature sensor is electrically connected with the data acquisition end.

6. The polishing rice cooling system of claim 1, wherein the discharging part comprises a discharging driving motor, a discharging fan and a discharging shell, the discharging shell is fixedly connected with the housing, the discharging shell forms a discharging space, the discharging space is communicated with the second polishing space, the discharging fan is accommodated in the discharging space, an output shaft of the discharging driving motor penetrates through the discharging shell and is fixedly connected with an axis of the discharging fan, a discharging through hole is further formed in the discharging shell, the discharging through hole is communicated with the outside, and the discharging fan is arranged on one side, away from the discharging through hole, of the discharging space to prevent rice grains from being damaged.

7. The system for polishing cool rice as claimed in claim 1, wherein the first filtering screen plate is formed with a first filtering screen hole, and the first filtering screen hole is formed at an acute angle to the rotation direction of the first polishing roll in a clockwise direction.

8. The polished rice cooling system as claimed in claim 1, wherein the second filtering screen plate is formed with a second filtering screen hole, and the angle of the second filtering screen hole to the rotation direction of the second polishing roller in the clockwise direction is an obtuse angle.

9. The system for polishing cool rice as claimed in claim 4, wherein the receiving bucket comprises an upper bucket and a lower bucket, and the bucket pressure sensor is sandwiched between the upper bucket and the lower bucket.

10. The rice polishing and cooling system as claimed in claim 6, wherein the discharging part further comprises a second flow monitoring sensor, a vent hole is further opened on one side of the discharging shell facing away from the discharging through hole, and the second flow monitoring sensor is used for monitoring the flow rate of air passing through the vent hole.