Rice husking machine

Abstract

The utility model discloses a rice mill in the technical field of grain processing equipment, which comprises a rack, a feeding device and an air spraying device, the feeding device and the air spraying device are arranged on the rack, and the rice mill is characterized by further comprising a screening barrel, a rice milling assembly, a driving unit and a cleaning assembly, the first transmission part is in driving connection with the driving unit; the rice milling assembly is arranged in the screening barrel in a penetrating mode and is in driving connection with the driving unit through a second transmission piece. The cleaning assembly comprises a driving part and an airflow output part, the airflow output part is used for forming airflow facing the interior of the screening barrel outside the screening barrel, and the screening barrel is scoured from outside to inside through the airflow so as to separate impurities attached to the surface of the screening barrel; the driving part is arranged on the rack and used for driving the airflow output part to reciprocate between the two ends of the screening barrel, and cleaning of the screening barrel is achieved in cooperation with autorotation of the screening barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of grain processing equipment, in particular to a rice mill. Background Art

[0002] Horizontal rice milling and polishing machine can be divided into single-roller horizontal emery roller rice milling and polishing machine and double-roller horizontal emery roller rice milling and polishing machine according to the feeding method of top feeding and horizontal discharging. They are mainly used for rice roughing, whitening and polishing. They can also be used for highland barley and barley shelling and rice milling, corn peeling and dregs removal, milling and polishing of yellow rice and yellow rice, oat peeling and rice milling, etc.

[0003] During the processing of horizontal rice mills and polishers, the raw grain particles are ground or rubbed by sand rollers or polishing rollers in the whitening chamber of the horizontal rice mill, which will produce a large amount of bran and heat. Due to the fluctuation and uneven air volume in the whitening chamber, and the high viscosity of the raw grains and different moisture levels, the bran will stick to the screen and accumulate on the screen bracket, and cannot be taken out of the machine in time, causing the rice temperature to rise, affecting the quality of the finished product (such as increased breakage and cracking), reduced output and machine blockage.

[0004] Based on this, the utility model designs a rice mill to solve the above problems. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rice milling machine, comprising a frame, a feeding device and an air jet device arranged on the frame, characterized in that it also comprises: a screening drum, a rice milling assembly, a driving unit and a cleaning assembly, wherein the screening drum is rotatably arranged in a rice milling chamber opened in the frame, and is driven and connected to the driving unit through a first transmission member; the rice milling assembly is inserted into the screening drum, and is driven and connected to the driving unit through a second transmission member; the driving unit is used to drive the screening drum and the rice milling assembly to rotate to perform rice milling, and the screening drum is used to separate rice grains and impurities during the rice milling process; the cleaning assembly comprises a driving component and an airflow output component, wherein the airflow output component is used to form an airflow toward the inside of the screening drum outside the screening drum, and the airflow flushes the screening drum from the outside to the inside to separate the impurities attached to the surface of the screening drum; the driving component is arranged on the frame and is used to drive the airflow output component to reciprocate between the two ends of the screening drum.

[0006] As a further solution of the utility model, the airflow output component includes an air nozzle, an air source and an air supply pipe, and the air supply pipe is used to connect the air nozzle and the air source so that the air source can deliver pressurized gas to the air nozzle.

[0007] As a further solution of the utility model, the driving component adopts any one of a rodless cylinder, a linear motor and an electric push rod.

[0008] As a further solution of the utility model, the drive assembly is installed on the outer surface of the frame.

[0009] As a further solution of the utility model, the air nozzle is arranged in the rice milling chamber.

[0010] As a further solution of the utility model, a through slot is provided on one side of the frame for mounting the driving assembly, and the through slot is used for connecting the driving assembly and the air supply pipe from the outside of the frame to the air nozzle in the rice milling chamber.

[0011] As a further solution of the utility model, the driving assembly and the air nozzle are connected via a connecting plate, and the thickness of the connecting plate matches the width of the through slot to reduce the opening area of ​​the through slot.

[0012] As a further solution of the utility model, the moving path of the airflow output component is parallel to the axial direction of the screening drum.

[0013] As a further solution of the utility model, the screening drum comprises a screen bracket and a screen piece, the screen bracket is rotatably arranged in the rice milling chamber, and the screen piece is fixedly arranged on the screen bracket.

[0014] As a further solution of the utility model, a control system is also included. The control system is electrically connected to the rice milling component and the cleaning component respectively to control the start and stop and operation status of the rice milling component and the cleaning component.

[0015] The utility model has the following beneficial effects:

[0016] The device forms an airflow toward the inside of the screening drum by arranging an airflow output component outside the screening drum, and cleans the screen plate and the screen bracket by flushing the surface of the screen plate and the screen bracket with the airflow. At the same time, the airflow output component is driven by the driving component to reciprocate between the two ends of the screening drum, and the screening drum is cleaned in conjunction with the self-rotation of the screening drum. There is no need to manually clean the screening drum after stopping the machine. The overall equipment is more convenient to use and has a higher degree of automation. The airflow can also cool the screen plate when flushing the screening drum to prevent heat accumulation on the surface of the screen plate, thereby improving the processing quality of grains.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the airflow output component of the utility model.

[0021] Figure 3 It is a side view schematic diagram of the airflow output component of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the screening cylinder in the utility model.

[0023] Figure 5 It is a schematic diagram of the control system principle in the utility model.

[0024] Legend:

[0025] 1. Frame; 11. Feeding device; 12. Air jet device; 13. Driving unit; 14. Rice milling chamber; 21. Screen; 22. Screen bracket; 31. Driving component; 32. Air jet nozzle; 33. Air supply pipe; 34. Connecting plate; 41. Touch screen control center; 42. Solenoid valve control device; 43. CPU control center. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0027] See also Figure 1-5 The utility model provides a technical solution: a rice milling machine, comprising a cleaning component for cleaning the sundries attached to the surface of the screening drum.

[0028] like Figure 1-4 As shown, the rice milling machine includes a frame 1, a feeding device 11 and an air jet device 12 arranged on the frame 1, a rice milling chamber 14 is formed inside the frame 1, a screening drum and a rice milling assembly are installed in the rice milling chamber 14, a driving unit 13 is fixedly installed on the side of the frame 1, and the driving unit 13 is respectively connected to the screening drum and the rice milling assembly through a first transmission member and a second transmission member, so that the driving unit 13 can drive the screening drum and the rice milling assembly to rotate, so as to peel the grains entering between the rice milling assembly and the screening drum from the feeding device 11 and separate impurities at the same time, and cooperate with the air jet device 12 to input air flow into the rice milling chamber 14, so that an air flow is formed in the rice milling chamber 14 to flow toward the bran collecting chamber at the bottom of the frame 1, driving the by-products generated by rice milling in the screening drum to leave the screening drum and enter the bran collecting chamber, while the grains will remain in the screening drum. The specific process of rice milling by the driving unit and the rice milling assembly is the existing technology, which will not be described in detail here.

[0029] The screening drum is composed of a screen bracket 22 and a screen piece 21 fixedly mounted on the screen bracket 22. The screen piece 21 is used to filter grains and impurities. The screen bracket 22 is used to be rotatably connected to the frame 1 and is simultaneously driven and connected to the driving unit 13 through a first transmission member. The rice milling component is coaxially arranged in the cylindrical cavity formed by the screen bracket 22 and the screen piece 21 to separate the impurities and grains generated during the operation of the rice milling component, so that the grains remain in the cylindrical cavity formed by the screen bracket 22 and the screen piece 21, while the impurities pass through the screen piece 21 and leave the cylindrical cavity.

[0030] like Figure 2-3 As shown, the cleaning component includes an airflow output component and a driving component 31. The airflow output component is used to emit airflow to flush the screening cylinder from the outside to the inside of the screening cylinder. The impurities attached to the surface of the screen plate 21 and the surface of the screen bracket 22 in the screening cylinder are detached by the flushing of the airflow, and the driving component 31 is used to drive the airflow output component to move. The moving range is between the two ends of the screening cylinder. Through the movement of the airflow output component and the rotation of the screening cylinder, the screening cylinder can be comprehensively cleaned to prevent impurities from accumulating on the screen plate 21 and the screen bracket 22, ensure the smooth flow of the screen plate 21, and take the heat-containing impurities out of the machine in time for timely heat dissipation. At the same time, the heat generated by the screen plate 21 due to material grinding or friction is cooled to a certain extent, thereby improving the production quality. There is no need to frequently clean the screening cylinder manually, making the overall device more convenient to use.

[0031] Figure 2 An example of an airflow output component is shown. In this example, the airflow output component includes an air nozzle 32, an air source (not shown in the figure) and an air supply pipe 33. The air supply pipe 33 is used to connect the air source and the air nozzle 32. High-pressure gas is delivered to the air nozzle 32 through the air source. The high-pressure gas passes through the air nozzle 32 to form an airflow of a specific shape and direction, so as to flush and clean the screen 21 and the screen bracket 22 through the airflow. The air nozzle 32 can also be replaced by an air knife.

[0032] The driving component 31 can be any one of a rodless cylinder, a linear motor and an electric push rod, and the present application does not impose any limitation on this, as long as it can drive the airflow output component to reciprocate between the two ends of the screening cylinder.

[0033] Figure 2 An example of a driving component 31 is shown. In this example, the driving component 31 adopts a rodless cylinder, which is fixedly mounted on the frame 1. The air nozzle 32 is fixedly mounted on the moving part of the rodless cylinder. The moving part of the rodless cylinder drives the air nozzle 32 to reciprocate between the two ends of the screening drum. The use of the rodless cylinder can reduce the space required for the installation of the driving component 31.

[0034] like Figure 1As shown, in some examples, the driving component 31 is installed on the outer surface of the frame 1, so that the driving component 31 can be away from the rice milling chamber 14, preventing impurities in the rice milling chamber 14 from being adsorbed on the surface of the driving component 31 and affecting the operation of the driving component 31, ensuring that the driving component 31 can operate normally and preventing impurities in the rice milling chamber 14 from affecting the driving component 31.

[0035] like Figure 1-3 As shown, a through slot (not shown in the figure) is provided on one side of the frame 1 where the driving component 31 is installed, and the air nozzle 32 is installed on a connecting plate 34. The connecting plate 34 can slide in the through slot and be driven by the driving component 31, so that the air nozzle 32 is located in the rice milling chamber 14, closer to the screen 21 and the screen bracket 22, to ensure the cleaning effect of the air nozzle 32 on the screen 21 and the screen bracket 22. At the same time, the width of the through slot matches the thickness of the connecting plate 34, so that the opening width of the through slot is shortened, the opening area of ​​the through slot is reduced, and the influence of the through slot on the air pressure in the rice milling chamber 14 is reduced. When working, the bran discharge port at the bottom of the frame 1 will be connected to the exhaust equipment, so that negative pressure is formed in the rice milling chamber 14, and the impurities in the rice milling chamber 14 will not leave from the through slot, and will not affect the surrounding environment.

[0036] The air supply pipe 33 passes through the through slot and connects the air source and the air nozzle 32 .

[0037] like Figure 1 As shown, in some examples, the axial direction of the rodless cylinder is the same as the axial direction of the screening drum, so that the moving path of the air nozzle 32 is parallel to the axial direction of the screening drum. During the horizontal movement of the air nozzle 32, the distance between the air nozzle 32 and the screening drum remains unchanged to ensure the cleaning effect.

[0038] like Figure 1-5As shown, the rice milling machine also includes a control system, which includes a CPU control center 43, a touch screen control center 41, automatic rice milling control, a solenoid valve control device 42 and negative pressure detection. In this example, the driving component 31 adopts a rodless cylinder, and the rodless cylinder and the air nozzle 32 are respectively connected to the compressed air supply device through pipelines. The solenoid valve control device 42 controls the solenoid valves associated with the rodless cylinder and the air nozzle 32 respectively, so as to realize the control of the movement of the air nozzle 32 and the control of the air flow ejected by the air nozzle 32, so as to achieve the effect of controlling the cleaning component. The automatic rice milling control is used to control the start and stop of the driving unit 13 to drive the operation of the rice milling component. The negative pressure detection is used to detect the air pressure in the rice milling chamber 14. The greater the negative pressure, the greater the working cycle of the solenoid valve, the longer the continuous working time, and the larger the interval. The smaller the negative pressure, the opposite is true. The touch screen control center 41 is interactive, which is convenient for the staff to view and control the operating status of the equipment. The working parameters and start and stop of the rice milling component and the cleaning component can be adjusted according to the actual usage and the pressure in the rice milling chamber 14. The CPU control center 43 is used to process the sensor monitoring data and display it through the touch screen control center 41. It is also used to process the signal of the touch screen control center 41, send electrical signals to control the electromagnetic control device 42 and the automatic rice milling control, and cooperate with the automatic rice milling control and the electromagnetic valve control device 42 to adjust the rice milling component and the cleaning component.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rice milling machine, comprising a frame (1), a feeding device (11) and an air injection device (12) arranged on the frame (1), characterized in that: It also includes a screening drum, a rice milling component, a driving unit (13) and a cleaning component. The screening drum is rotatably arranged in a rice milling chamber (14) provided in the frame (1), and is drivingly connected to a driving unit (13) via a first transmission member; The rice milling assembly is arranged in the screening cylinder and is drivingly connected to the driving unit (13) through a second transmission member; The cleaning assembly comprises a driving component (31) and an airflow output component. The airflow output component is used to form an airflow outside the screening cylinder toward the inside of the screening cylinder, and the airflow flushes the screening cylinder from the outside to the inside to separate impurities attached to the surface of the screening cylinder; The driving component (31) is arranged on the frame (1) and is used to drive the airflow output component to move back and forth between the two ends of the screening cylinder.

2. A rice milling machine according to claim 1, characterized in that: The air flow output component comprises an air nozzle (32), an air source and an air supply pipe (33); the air supply pipe (33) is used to connect the air nozzle (32) and the air source so that the air source can deliver pressurized gas to the air nozzle (32).

3. A rice milling machine according to claim 1, characterized in that: The driving component is any one of a rodless cylinder, a linear motor and an electric push rod.

4. The rice milling machine according to claim 2, characterized in that: The driving component is installed on the outer surface of the frame (1).

5. The rice milling machine according to claim 4, characterized in that: The air jet nozzle (32) is arranged in the rice milling chamber (14).

6. The rice milling machine according to claim 5, characterized in that: A through slot is provided on one side of the frame (1) where the driving component is mounted, and the through slot is used for the driving component and the air supply pipe (33) to be connected from the outside of the frame (1) to the air nozzle (32) in the rice milling chamber (14).

7. The rice milling machine according to claim 6, characterized in that: The driving component and the air nozzle (32) are connected via a connecting plate (34), and the thickness of the connecting plate (34) matches the width of the through slot to reduce the opening area of ​​the through slot.

8. The rice milling machine according to claim 1, characterized in that: The moving path of the airflow output component is parallel to the axial direction of the screening drum.

9. The rice milling machine according to claim 1, characterized in that: The screening cylinder comprises a screen bracket (22) and a screen plate (21); the screen bracket (22) is rotatably arranged in the rice milling chamber (14); and the screen plate (21) is fixedly arranged on the screen bracket (22).

10. The rice milling machine according to claim 1, characterized in that: The utility model also comprises a control system, which is electrically connected to the rice milling component and the cleaning component respectively to control the start and stop and the operation state of the rice milling component and the cleaning component.

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