Bran collecting assembly of rice husking machine
By installing a uniform air device in the rice mill's chaff collection room, the problem of easy wear and accumulation of bran powder in the horizontal rice mill is solved, and a more uniform air flow and negative pressure distribution is achieved, extending the service life of the equipment and reducing operating costs.
Patent Information
- Application Number
- CN202421284353.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-06-06
AI Technical Summary
During the processing process of horizontal rice mill, due to the design of the bran absorption system, the middle part of the rice milling chamber or polishing chamber is subjected to high negative pressure, which causes easy wear in the middle of the rice milling roller or polishing roller, and bran powder is easily accumulated on the side wall of the bran collection chamber, which requires regular cleaning.
A rice mill chaff collection assembly is designed, including a rack and a bran collecting bucket. A wind uniform device is provided in the bran collecting bucket. The wind uniform device spreads the airflow in the bran collecting room through the air guide surface to make the airflow more even and prevent the accumulation of bran powder.
The airflow in the chaff collection chamber is made more uniform through the air uniform device, which solves the problem of easy wear and accumulation of bran powder in the middle of the rice milling roller, improves the service life of the rice milling roller and screen barrel, reduces the rate of broken rice and the accumulation of bran powder on the inner wall of the chaff collection bucket, and saves labor and material costs.
Smart Images
Figure CN222778123U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rice milling machines, in particular to a rice milling machine bran collecting component. Background Art
[0002] Horizontal rice milling machine can be divided into single roller horizontal rice milling machine and double roller horizontal rice milling machine according to the feeding method of top feeding and horizontal discharging. It is mainly used for rice roughening, whitening and polishing. It 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, peeling and rice milling of oats, etc.
[0003] During the processing of the horizontal rice mill, the raw grain particles are ground or rubbed by the rice milling rollers or polishing rollers in the whitening chamber of the horizontal rice mill, which will produce a large amount of bran layer.
[0004] The bran suction system of the horizontal rice mill and polisher adopts an external exhaust fan connected to the suction pipe of the rice mill, and the suction pipe is aligned with the rice milling chamber or polishing chamber, resulting in uneven negative pressure in the rice milling chamber or polishing chamber. The negative pressure in the middle of the rice milling chamber or polishing chamber is large, which causes the middle part of the rice milling roller or the polishing roller to be easily worn. At the same time, due to the large negative pressure in the middle part, the air flow velocity near the side of the bran collecting chamber is slow, and bran powder is easily accumulated on the side wall of the bran collecting chamber, and the bran powder in the bran collecting chamber needs to be cleaned regularly.
[0005] Based on this, the utility model designs a rice milling machine bran collecting component to solve the above problems. Utility Model Content
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rice milling machine bran collecting assembly comprises a frame and a bran collecting bucket, the bran collecting bucket is fixedly arranged on the frame, a bran collecting chamber and a rice milling chamber which are connected to each other are formed in the bran collecting bucket and in the frame, the rice milling chamber and the bran collecting chamber are respectively connected to an air spraying device and an air suction device, air is supplied to the rice milling chamber by the air spraying device, and air is sucked from the bran collecting chamber by the air suction device so that an airflow with a flow direction from the rice milling chamber to the bran collecting chamber is formed in the rice milling chamber and the bran collecting chamber; the air suction device is connected to a bran suction port provided in the bran collecting bucket, and the air spray device is fixedly arranged on one side of the frame; a uniform wind device is arranged in the bran collecting chamber, and a wind guide surface is formed on the surface of the uniform wind device for guiding the airflow in the bran collecting chamber which is close to the center of the bran suction port in a first direction toward a direction away from the bran suction port, so as to make the airflow in the bran collecting chamber more uniform; the first direction is the axial direction of the rice milling roller in the rice milling chamber.
[0007] As a further solution of the utility model, the wind uniforming device is a wind uniforming rod, which is arranged above the bran suction port in the bran collecting chamber and has a wind guide surface on the side facing the rice milling chamber to guide the airflow to both sides; the two ends of the wind uniforming rod are respectively tightly attached to the inner surface of the bran collecting bucket; the axial direction of the wind uniforming rod is perpendicular to the first direction.
[0008] As a further solution of the utility model, the axis of the wind uniforming rod intersects the axis of the bran suction port at right angles.
[0009] As a further solution of the utility model, the cross section of the wind uniform rod is circular, and the wind guide surface is the outer arc surface of the wind uniform rod, and the airflow is guided to flow to both sides of the wind uniform rod through the arc surface of the wind uniform rod facing the rice milling chamber.
[0010] As a further solution of the utility model, two bran guide plates are provided above the wind uniforming rod, the first ends of the two bran guide plates intersect above the wind uniforming rod, and the second ends of the two bran guide plates are respectively tangent to the outer surface of the wind uniforming rod on both sides; the bran guide plates are fixedly connected to the wind uniforming rod and / or the bran collecting bucket.
[0011] As a further solution of the utility model, the cross-section of the wind uniforming rod is rhombus-shaped, and the wind guiding surface is two adjacent outer surfaces of the wind uniforming rod.
[0012] As a further solution of the utility model, the bran collecting bucket is provided with slotted holes on two wall surfaces opposite to each other in the second direction, and an adjustment handle is passed through the slotted hole and can be moved within the first direction. The adjustment handle has a threaded section threadedly engaged with the threaded hole provided on the surface of the wind uniforming rod, and an abutting section for abutting the outer surface of the bran collecting bucket to fix the position of the wind uniforming rod, and a knob is fixedly provided at one end of the abutting section away from the threaded section; the second direction shown is the axial direction of the wind uniforming rod.
[0013] As a further solution of the utility model, the length of the wind uniforming rod in the first direction is D1, the length of the bran suction port in the first direction is D2, and 0.7D2≤D1≤0.8D2.
[0014] As a further solution of the utility model, the angle between the two bran guide plates is A, and A≤80°.
[0015] As a further solution of the utility model, the height difference between the bottom end of the wind uniforming rod and the bran suction port is L1, the height of the bran collecting bucket 2 is L2, and L1=1 / 3L2.
[0016] The utility model has the following beneficial effects:
[0017] This device installs a uniform wind device in the bran collecting chamber. The uniform wind device can distribute the airflow in the bran collecting chamber close to the bran suction port in the axial direction of the rice milling roller, making the negative pressure and airflow in the bran collecting chamber more uniform, solving the problem of easy wear of the middle part of the sand roller of the sand roller rice milling machine. The uniform wind device can increase the service life of the rice milling roller and the screen drum, reduce the broken rice rate, and reduce the problem of bran collection on the inner wall of the bran collecting hopper, saving customers' labor costs and material costs.
[0018] 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
[0019] 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:
[0020] Figure 1 This is a schematic diagram of the bran collecting chamber structure of a traditional rice mill.
[0021] Figure 2 It is a schematic diagram of the first exemplary structure of the wind uniforming rod 3 in the utility model.
[0022] Figure 3 It is a schematic diagram of the second exemplary structure of the wind uniforming rod 3 in the utility model.
[0023] Figure 4 It is a structural schematic diagram of the bran collecting bucket 2 in the utility model.
[0024] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A.
[0025] Figure 6 It is a structural schematic diagram of the adjustment handle 4 in the utility model.
[0026] Legend:
[0027] 1. Frame; 11. Rice milling chamber; 12. Rice milling roller; 13. Air spray device; 2. Bran collecting bucket; 21. Bran collecting chamber; 22. Bran suction port; 23. Slot-shaped hole; 3. Wind uniformity rod; 31. Bran guide plate; 4. Adjustment handle; 41. Threaded section; 42. Abutment section; 43. Knob. DETAILED DESCRIPTION
[0028] 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.
[0029] The utility model provides a rice milling machine bran collecting component, comprising a frame 1 and a bran collecting bucket 2, the bran collecting bucket 2 is fixedly arranged on the frame 1, a bran collecting chamber 21 and a rice milling chamber 11 are formed in the bran collecting bucket 2 and the frame 1, the rice milling chamber 11 and the bran collecting chamber 21 are respectively connected to an air spraying device 13 and an air suction device (not shown in the figure), the air is supplied to the rice milling chamber 11 by the air spraying device 13, and the air is sucked from the bran collecting chamber 21 by the air suction device, so that the rice milling chamber 11 and the bran collecting chamber 21 form a flow direction from the rice milling chamber 11 to the collection chamber 21. The rice milling chamber 11 is provided with a rice milling roller 12 and a screen drum for filtering impurities. When working, the screen drum is used to keep the milled grains inside, while impurities and bran powder leave the bran collecting chamber 21 with the air flow under the drive of the air flow. A bran suction port 22 for connecting to an air suction device is formed at the lower end of the bran collecting hopper 2. Impurities and bran powder will eventually leave the bran collecting chamber 21 from the bran suction port 22 and be collected. It is an existing technology to use a rice milling machine for rice milling, which will not be described in detail here. Figure 1 It can be seen that in order to cover the entire rice milling chamber 11, the length of the upper end of the bran collecting bucket 2 in the first direction needs to be the same as the length of the rice milling chamber 11 in the first direction, and the bran suction port 22 at the lower end of the bran collecting bucket 2 in order to be able to connect to the air suction pipe, its diameter will be much smaller than the length of the bran collecting bucket 2 in the first direction. This will result in the bran collecting chamber 21 The closer to the bran suction port 22 in the first direction, the greater the negative pressure, and the farther away from the bran suction port 22 in the first direction, the smaller the negative pressure. The negative pressure is mainly concentrated above the bran suction port 22, and the negative pressure near the side wall of the bran collecting chamber 21 is too small, so that bran powder is easily adsorbed on the side wall of the bran collecting chamber 21, and at the same time, the screen drum and the middle position of the rice milling roller 12 will wear faster, affecting the life of the rice milling roller 12.
[0030] In order to solve the above-mentioned problem, the present application arranges a uniform wind device in the bran collecting chamber 21, and a wind guide surface is formed on the surface of the uniform wind device for guiding the airflow in the bran collecting chamber 21 close to the center of the bran suction port 22 in the first direction toward a direction away from the bran suction port 22, so as to make the airflow in the bran collecting chamber 21 more uniform, make the negative pressure in the bran collecting chamber 21 uniform, and prevent bran powder from accumulating in the bran collecting bucket 2.
[0031] The first direction is the axial direction of the rice milling roller 12 in the rice milling chamber 11 .
[0032] Specifically, Figure 2-3As shown, the wind uniformity device is a wind uniformity rod 3, which is rod-shaped as a whole. By installing the wind uniformity rod 3 above the bran suction port 22 in the bran collecting chamber 21, and making the axial direction of the wind uniformity rod 3 perpendicular to the first direction, looking upward from the bran suction port 22, the wind uniformity rod 3 and the rice milling roller 12 are vertically staggered, and the wind uniformity rod 3 is used to block the airflow above the bran suction port 22, so that the airflow flowing from the rice milling chamber 11 to the bran collecting chamber 21 during operation can be blocked by the wind uniformity rod 3 and then flows to both sides of the wind uniformity rod 3, so that The airflow in the first direction close to the bran suction port 22 can be dispersed to both sides by the wind uniforming rod 3 to increase the airflow velocity in the bran collecting chamber 21 away from the bran suction chamber in the first direction, making it more difficult for bran powder to be adsorbed on the inner wall of the bran collecting chamber 21, preventing bran powder from accumulating on the inner wall surface of the bran collecting chamber 21, and at the same time making the negative pressure in the bran suction chamber more uniform, thereby making the airflow in the rice milling chamber 11 more uniform, making the wear on the surface of the screen drum and the rice milling roller 12 more uniform, and improving the service life of the rice milling roller 12 and the screen drum.
[0033] Furthermore, the two ends of the wind uniforming rod 3 are respectively in close contact with the two walls of the inner cavity of the chaff collecting bucket 2, so that the wind uniforming rod 3 spans the entire chaff collecting chamber 21 in the second direction, ensuring the effect of dispersing the airflow and avoiding the situation of excessive local airflow.
[0034] The second direction is the axial direction of the wind uniforming rod 3 .
[0035] Furthermore, the axis of the wind uniform rod 3 intersects with the axis of the bran suction port 22 at a right angle, which means that the center of the wind uniform rod 3 and the center of the bran suction port 22 are at the same position in the first direction, and the wind uniform rod 3 is at the exact center of the bran collecting chamber 21 in the first direction, which can disperse the airflow more evenly. At the same time, the axis of the wind uniform rod 3 and the axis of the bran suction port 22 are also perpendicular to each other, which means that the wind uniform rod 3 and the bran suction port 22 are parallel to each other, which can also increase the uniformity of the wind uniform rod 3 when dispersing the airflow.
[0036] Figure 2 An example of an even wind rod 3 is shown. In this example, the cross-section of the even wind rod 3 is circular. The even wind rod 3 with a circular cross-section can guide the airflow through the arc surface formed on its outer surface, and diverge the wind direction and wind force in the tangential direction of the even wind rod 3. It is mainly used for products with a rice milling chamber 11 length of less than or equal to 1000mm.
[0037] Further, when the cross section of the wind uniform rod 3 is circular, a bran guide plate 31 is fixedly provided on the wind uniform rod 3, such as Figure 2 As shown, two bran guide plates 31 are provided, and the top ends of the two bran guide plates 31 intersect, and at the same time, the bottom ends of the two bran guide plates 31 are respectively tangent to the two sides of the wind uniforming rod 3. The bran guide plates 31 make the airflow have a certain angle before the airflow contacts the wind uniforming rod 3, and at the same time, avoid the airflow from contacting the middle position of the top end of the wind uniforming rod 3, thereby reducing the wind resistance of the wind uniforming rod 3 and reducing the wear of the top end of the wind uniforming rod 3.
[0038] Figure 3 Another example of the wind uniform rod 3 is shown. In this example, the cross-section of the wind uniform rod 3 is a rhombus, and the longer diagonal line in the rhombus is vertical. In this way, the wind uniform rod 3 can disperse the airflow through two faces with a smaller angle. The wind direction and wind force are divergent in the normal direction of the rhombus edge. It is mainly used for products with a rice milling chamber 11 or a long polishing chamber with a length greater than 1000mm.
[0039] like Figure 4-6 As shown, in some examples, a slotted hole 23 is provided on two wall surfaces of the bran collecting bucket 2 that are arranged opposite to each other in the second direction, and an adjusting handle 4 that can move in the first direction within the slotted hole 23 is passed through the slotted hole 23, and the adjusting handle 4 has a threaded section 41 that is threadedly engaged with the threaded hole provided on the surface of the wind uniforming rod 3, and an abutting section 42 that is used to abut against the outer surface of the bran collecting bucket 2 to fix the position of the wind uniforming rod 3, and a knob 43 is fixedly provided at one end of the abutting section 42 away from the threaded section 41, and the adjusting handle 4 is driven to rotate by rotating the knob 43, so that the threaded section 41 of the adjusting handle 4 is threadedly engaged with the wind uniforming rod 3, and the abutting section 42 of the adjusting handle 4 abuts against the outer surface of the bran collecting bucket 2 to fix the position of the wind uniforming rod 3, and when the device When wear occurs during subsequent use, such as wear of the rice milling roller 12 and the screen drum, it may cause differences in the exhaust of the screen drum, and ultimately lead to negative pressure deviation in the bran collecting chamber 21. Of course, there are many situations in actual use that lead to negative pressure deviation in the bran collecting chamber 21. At this time, the adjusting handle 4 can be loosened to make the abutment section 42 of the adjusting handle 4 disengage from the outer surface of the bran collecting bucket 2, so that the wind uniforming rod 3 can be moved in the first direction. The movable range of the wind uniforming rod 3 is consistent with the stroke of the adjusting handle 4 in the slotted hole 23. The position adjustment can be made to the uneven negative pressure in the bran collecting chamber 21 caused by aging and wear of components during subsequent use, so that the use of the wind uniforming rod 3 is more flexible.
[0040] Furthermore, the length of the wind uniforming rod 3 in the first direction is D1, the length of the bran suction port 22 in the first direction is D2, 0.7D2≤D1≤0.8D2, when D1 is too large, it will affect the flow rate of the airflow, and when D1 is too small, the dispersion effect of the airflow is poor.
[0041] Furthermore, the angle between the two bran guide plates 31 is A, A≤80°, and a too large A will increase the wind resistance and affect the flow rate of the airflow.
[0042] Furthermore, the height difference between the bottom end of the wind uniforming rod 3 and the bran suction port 22 is L1, and the height of the bran collecting bucket 2 is L2, L1=1 / 3L2. If the wind uniforming rod 3 is too high or too low, it will lead to poor airflow dispersion effect and it is impossible to create a uniform negative pressure in the bran collecting chamber 21.
[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A rice milling machine bran collecting assembly, comprising a frame (1) and a bran collecting bucket (2), characterized in that: The bran collecting bucket (2) is fixedly mounted on the frame (1), and a bran collecting chamber (21) and a rice milling chamber (11) which are interconnected are formed in the bran collecting bucket (2) and the frame (1); The bran collecting chamber (21) is provided with a uniform wind device, and a wind guide surface is formed on the surface of the uniform wind device for guiding the airflow in the bran collecting chamber (21) close to the center of the bran suction port (22) in a first direction toward a direction away from the bran suction port (22), so as to make the airflow in the bran collecting chamber (21) more uniform; The first direction is the length direction of the rice milling chamber (11).
2. The bran collecting assembly of a rice mill according to claim 1, characterized in that: The wind uniforming device is a wind uniforming rod (3), which is arranged above the bran suction port (22) in the bran collecting chamber (21) and has a wind guide surface on the side facing the rice milling chamber (11) for guiding the airflow to both sides; The two ends of the wind uniforming rod (3) are respectively in close contact with the inner surface of the bran collecting bucket (2); The axial direction of the wind uniforming rod (3) is perpendicular to the first direction.
3. The bran collecting assembly of a rice mill according to claim 2, characterized in that: The axis of the wind uniforming rod (3) intersects the axis of the bran suction port (22) perpendicularly.
4. The bran collecting assembly of a rice mill according to claim 3, characterized in that: The cross section of the wind leveling rod (3) is circular, and the wind guide surface is the outer arc surface of the wind leveling rod (3). The arc surface of the wind leveling rod (3) on one side facing the rice milling chamber (11) guides the airflow to flow toward both sides of the wind leveling rod (3).
5. The rice milling machine bran collecting assembly according to claim 4, characterized in that: Two bran guide plates (31) are provided above the wind leveling rod (3), the first ends of the two bran guide plates (31) intersect above the wind leveling rod (3), and the second ends of the two bran guide plates (31) are tangent to both sides of the outer surface of the wind leveling rod (3); The bran guide plate (31) is fixedly connected to the wind uniforming rod (3) and / or the bran collecting bucket (2).
6. The bran collecting assembly of a rice mill according to claim 3, characterized in that: The cross section of the wind uniforming rod (3) is rhombus-shaped, and the wind guiding surfaces are two adjacent outer surfaces of the wind uniforming rod (3).
7. The bran collecting assembly of a rice mill according to claim 2, characterized in that: The bran collecting bucket (2) is provided with slotted holes (23) on two wall surfaces opposite to each other in the second direction, an adjusting handle (4) is inserted into the slotted hole (23) and can move in the first direction in the slotted hole (23), the adjusting handle (4) has a threaded section (41) threadedly engaged with a threaded hole provided on the surface of the wind leveling rod (3) and an abutting section (42) for abutting against the outer surface of the bran collecting bucket (2) to fix the position of the wind leveling rod (3), and a knob (43) is fixedly provided at one end of the abutting section (42) away from the threaded section (41); The second direction shown is the axial direction of the wind uniforming rod (3).
8. The bran collecting assembly of a rice mill according to claim 2, characterized in that: The length of the wind uniforming rod (3) in the first direction is D1, the length of the bran suction port (22) in the first direction is D2, and 0.7D2≤D1≤0.8D2.
9. The bran collecting assembly of a rice mill according to claim 5, characterized in that: The angle between the two bran guide plates (31) is A, and A≤80°.
10. The bran collecting assembly of a rice mill according to claim 2, characterized in that: The height difference between the bottom end of the wind uniforming rod (3) and the bran suction port (22) is L1, and the height of the bran collecting bucket (2) is L2, where L1=1 / 3L2.