Grinding chamber inner pressure adjusting device and rice milling and polishing machine

Abstract

The utility model discloses a milling chamber inner pressure adjusting device and a rice milling and polishing machine, and belongs to the technical field of grain processing, the milling chamber inner pressure adjusting device comprises a milling roller assembly, and the milling roller assembly is rotatably arranged in a milling chamber; the huller blade assemblies are distributed on the outer side of the milling roller assembly in an annular array mode, sieve plates are arranged between the huller blade assemblies, a milling cavity is formed between the huller blade assemblies and the milling roller assembly and between the sieve plates and the milling roller assembly, each huller blade assembly comprises a movable huller blade which is movably arranged, and the distance between the movable huller blade and the milling roller assembly is adjustable so that the inner pressure of the milling cavity can be adjusted. According to the device, materials are peeled, ground and polished more uniformly, the flowing speed of the materials in the grinding chamber is not too high, and the machining precision is inconvenient to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of grain processing, in particular to a grinding chamber internal pressure regulating device. In addition, the utility model also relates to a rice milling and polishing machine comprising the grinding chamber internal pressure regulating device. Background Art

[0002] In the field of grain processing (such as processing of indica rice, japonica rice, glutinous rice, rhubarb rice, small yellow rice, highland barley, oats, buckwheat, quinoa, barley and other products), rice milling and polishing equipment are needed to process the raw materials. The mainstream vertical material processing equipment on the market currently includes forward / reverse vertical sand roller rice milling machines (the direction of material movement is the same as the direction of gravity, which is forward, and the opposite is reverse) and vertical polishing machines.

[0003] Existing rice milling and polishing machines, such as a vertical sand roller rice mill with automatic rice knife adjustment disclosed in Chinese patent number CN115025836B, have the following problems when grinding and polishing raw grain materials through a grinding chamber: uneven peeling, grinding and polishing of materials, small unit grinding area, the gravity of the material itself accelerates the flow speed of the material in the grinding chamber, and the processing accuracy is not convenient to adjust. Utility Model Content

[0004] One purpose of the utility model is to provide a grinding chamber internal pressure regulating device and a rice milling and polishing machine.

[0005] Another object of the utility model is to provide a rice milling and polishing machine comprising the above-mentioned grinding chamber internal pressure regulating device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A grinding chamber internal pressure regulating device is used to regulate the internal pressure of a grinding chamber in a main body of a rice milling and polishing machine. The grinding chamber internal pressure regulating device comprises:

[0008] A grinding roller assembly, the grinding roller assembly is rotatably disposed in the grinding chamber;

[0009] The rice cutter assembly is arranged in a ring array outside the grinding roller assembly, a screen plate is arranged between each rice cutter assembly, a grinding cavity is formed between the rice cutter assembly and the screen plate and the grinding roller assembly, the rice cutter assembly includes a movable rice cutter that is movably arranged, and the distance between the movable rice cutter and the grinding roller assembly is adjustable to adjust the internal pressure of the grinding cavity.

[0010] In one or more embodiments of the grinding chamber internal pressure regulating device, the rice cutter assembly also includes a rice cutter column and an adjusting rod assembly. The rice cutter column is vertically arranged in the main body, and an adjusting rod assembly is arranged on the rice cutter column. The end of the adjusting rod assembly facing the center of the main body is connected to the movable rice cutter, and the adjusting rod assembly is used to drive the movable rice cutter to translate radially along the main body.

[0011] In one or more embodiments of the grinding chamber internal pressure regulating device, the rice cutter assembly also includes a fixed rice cutter, which is arranged on both horizontal sides of the movable rice cutter and is fixedly connected to the rice cutter column.

[0012] In one or more embodiments of the grinding chamber internal pressure regulating device, the regulating rod assembly includes an adjusting screw and a handle seat. The handle seat is arranged on the side wall of the rice cutter column facing away from the center of the main body. The adjusting screw passes through the handle seat and the rice cutter column in sequence and is connected to the movable rice cutter through a bearing. The adjusting screw is used to drive the movable rice cutter to translate radially along the main body.

[0013] In one or more embodiments of the grinding chamber internal pressure regulating device, an adjusting handle is provided at one end of the adjusting screw rod located outside the handle seat.

[0014] In one or more embodiments of the grinding chamber internal pressure regulating device, the side of the movable rice knife facing the grinding component is a multi-section structure, and viewed from the vertical cross-section direction of the movable rice knife, it is a multi-section structure including at least one inclined surface and at least one flat surface.

[0015] In one or more embodiments of the grinding chamber internal pressure regulating device, the grinding roller assembly comprises a rotatable grinding roller, and the outer wall of the grinding roller is provided with a spiral groove.

[0016] In one or more embodiments of the grinding chamber internal pressure regulating device, the grinding roller assembly also includes a main shaft and a rotating fan blade group. The main shaft is arranged in the grinding roller, and the main shaft is driven to rotate by a driving mechanism. Multiple sets of rotating fan blade groups are arranged on the main shaft along the axial direction of the main shaft. The rotating fan blade group includes multiple rotating wind blades arranged on the main shaft in a circumferential annular array along the main shaft. There is a gap between the outer end of the rotating wind blade and the grinding roller, and the main shaft is used to drive the rotating fan blade group and the grinding roller to rotate.

[0017] In one or more embodiments of the grinding chamber internal pressure regulating device, ventilation holes are provided on the rotating wind blades.

[0018] According to another aspect of the utility model, a rice milling and polishing machine is provided, which comprises the above-mentioned grinding chamber internal pressure regulating device.

[0019] The utility model has the following beneficial effects:

[0020] The utility model discloses a grinding chamber internal pressure regulating device, in which a rice cutter assembly and a rotatable grinding roller assembly are arranged in the grinding chamber, materials enter the grinding chamber between the rice cutter assembly and the grinding roller assembly and are ground and milled, the rice cutter assembly can adjust the distance between it and the grinding roller assembly to adjust the internal pressure of the grinding chamber, so as to adjust the processing accuracy of the materials and realize convenient adjustment of the material processing progress; under the joint action of the centrifugal force of the grinding roller assembly and the gravity of the materials, the materials are discharged from the bottom of the grinding chamber to the outside of the machine, and the movement of the materials in the grinding chamber is like a vertical spiral line moving from top to bottom around the sand roller, which effectively increases the descending speed of the materials, reduces the internal pressure and increases the flow rate of the materials.

[0021] The rice milling and polishing machine of the utility model also has the above-mentioned beneficial effects.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, the present invention also has other purposes, features and advantages. The present invention will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the installation of the sieve plate of the preferred embodiment of the utility model.

[0026] Figure 3 It is a schematic diagram of the installation of the rice knife assembly of the preferred embodiment of the utility model.

[0027] Figure 4 It is a top view schematic diagram of the rice knife assembly of the preferred embodiment of the utility model.

[0028] Figure 5 It is a schematic diagram of the installation of a movable rice knife according to a preferred embodiment of the utility model.

[0029] Figure 6 It is a structural schematic diagram of a rice knife assembly according to a preferred embodiment of the utility model.

[0030] Figure 7 It is a structural schematic diagram of a movable rice knife according to a preferred embodiment of the utility model.

[0031] Legend: 1. Main body; 2. Outer cover; 3. Rice cutter assembly; 301. Rice cutter column; 302. Movable rice cutter; 303. Fixed rice cutter; 304. Adjusting screw rod; 305. Handle seat; 306. Handle seat cover; 307. Adjusting handle; 308. Inclined surface; 4. Grinding chamber; 401. Grinding roller; 402. Screen plate; 403. Screen plate bracket; 404. Handle screw; 405. Screen pressing slot plate. DETAILED DESCRIPTION

[0032] 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.

[0033] Please refer to the attached drawing, which is a structural schematic diagram of a preferred embodiment of a grinding chamber internal pressure regulating device and a rice milling and polishing machine provided by the utility model.

[0034] A grinding chamber internal pressure regulating device is used to regulate the internal pressure of a grinding chamber 4 in a main body 1 of a rice milling and polishing machine. The grinding chamber internal pressure regulating device comprises:

[0035] A grinding roller assembly, the grinding roller assembly is rotatably disposed in the grinding chamber 4;

[0036] The rice cutter assembly 3 is arranged in a ring array outside the grinding roller assembly, and a sieve plate 402 is arranged between each rice cutter assembly 3. A grinding cavity is formed between the rice cutter assembly 3 and the sieve plate 402 and the grinding roller assembly. The rice cutter assembly 3 includes a movable rice cutter 302 that is movably arranged. The distance between the movable rice cutter 302 and the grinding roller assembly is adjustable to adjust the internal pressure of the grinding cavity.

[0037] The grinding chamber internal pressure regulating device of the utility model is provided with a rice cutter assembly 3 and a rotatable grinding roller assembly in the grinding chamber 4, and the material enters the grinding chamber between the rice cutter assembly 3 and the grinding roller assembly and is ground and milled. The rice cutter assembly 3 can adjust the distance between it and the grinding roller assembly to adjust the internal pressure of the grinding chamber, so as to adjust the processing accuracy of the material and realize convenient adjustment of the material processing progress; under the combined action of the centrifugal force of the grinding roller assembly and the gravity of the material, the material is discharged from the bottom of the grinding chamber 4 to the outside of the machine, and the movement of the material in the grinding chamber is like a vertical spiral line moving from top to bottom around the sand roller, which effectively increases the descending speed of the material, reduces the internal pressure, and increases the flow rate of the material.

[0038] It should be noted that an outer cover 2 is provided on the outside of the main body 1, and the outer cover 2 can protect the rice knife assembly 3, the sieve plate 402 and the grinding roller assembly.

[0039] In addition, the sieve plate 402 and the rice cutter assembly 3 are enclosed to form a cylindrical structure, and the two sides of the sieve plate 402 are connected to the rice cutter assembly 3 through the sieve plate bracket 403. The rice cutter assembly 3 is provided with a screen pressing slot plate 405 and a handle screw 404. The screen pressing slot plate 405 is used to press the sieve plate bracket 403, and the handle screw 404 is used to penetrate the screen pressing slot plate 405 and cooperate with the preset screw hole on the rice cutter assembly 3 to tighten the screen pressing slot plate 405. The handle screw 404 can be used to conveniently disassemble the screen pressing slot plate 405 and take out the sieve plate bracket 403 and the sieve plate 402, so that the sieve plate 402 can be replaced and repaired.

[0040] Preferably, please refer to Figure 2 , 3 As shown in , 4, the rice knife assembly 3 also includes a rice knife column 301 and an adjusting rod assembly. The rice knife column 301 is vertically arranged in the main body 1, and an adjusting rod assembly is arranged on the rice knife column 301. The end of the adjusting rod assembly facing the center of the main body 1 is connected to the movable rice knife 302, and the adjusting rod assembly is used to drive the movable rice knife 302 to translate radially along the main body 1.

[0041] It can be understood that a grinding chamber is formed between the rice cutter assembly 3 and the grinding roller assembly to grind and polish the material. The volume of the grinding chamber affects the processing speed and progress of the material. The volume and internal pressure of the grinding chamber can be adjusted by adjusting the distance between the movable rice cutter 302 and the grinding roller assembly through the adjusting rod assembly. The shorter the distance, the more the material flips and rolls in the grinding chamber, and the higher the processing accuracy. Conversely, the lower the accuracy.

[0042] Preferably, please refer to Figure 2-6 As shown, the rice cutter assembly 3 also includes a fixed rice cutter 303 , which is arranged on both horizontal sides of the movable rice cutter 302 , and the fixed rice cutter 303 is fixedly connected to the rice cutter column 301 .

[0043] Here, the meaning of "rice knife column 301" refers to the column structure connected to the main body 1, which plays a role in installing the adjustment rod assembly and fixing the rice knife 303. In some embodiments, the rice knife column 301 is a rod-shaped structure or a rod-shaped structure with a boss.

[0044] The "movable rice knife 302" and "fixed rice knife 303" herein both refer to structures that cooperate with the grinding roller assembly to form a grinding chamber and grind and stir the material in the grinding chamber. In some embodiments, the movable rice knife 302 and the fixed rice knife 303 are both rod-shaped structures.

[0045] It can be understood that the fixed rice cutter 303 not only cooperates with the grinding roller assembly to grind the material, but also limits and guides the movable rice cutter 302.

[0046] It should be noted that the knife column 301 can be installed on the main body 1 by bolts. Specifically, the knife column 301 can be connected and fixed by bolts through an L-shaped mounting plate in conjunction with the preset screw holes on the main body 1.

[0047] Preferably, please refer to Figure 2 As shown, the adjusting rod assembly includes an adjusting screw rod 304 and a handle seat 305. The handle seat 305 is arranged on the side wall of the rice cutter column 301 facing away from the center of the main body 1. The adjusting screw rod 304 passes through the handle seat 305 and the rice cutter column 301 in sequence and is connected to the movable rice cutter 302 through a bearing. The adjusting screw rod 304 is used to drive the movable rice cutter 302 to translate radially along the main body 1.

[0048] It can be understood that the movable rice knife 302 can be driven to move by rotating the adjusting screw rod 304, thereby adjusting the distance between the movable rice knife 302 and the grinding roller assembly, thereby achieving the volume and internal pressure adjustment of the grinding chamber, and the adjustment method is very convenient.

[0049] Optionally, an adjusting handle 307 is provided at one end of the adjusting screw rod 304 located outside the handle seat 305 .

[0050] It is understandable that an adjustment handle 307 is provided at the outer end of the adjustment screw rod 304 to make it more convenient to rotate the adjustment screw rod 304 .

[0051] Preferably, please refer to Figure 7 As shown, the side of the movable rice knife 302 facing the grinding assembly is a multi-segment structure, and viewed from the vertical cross-section direction of the movable rice knife 302, it is a multi-segment structure including at least one inclined surface 308 and at least one flat surface.

[0052] It can be understood that the contact area between the side of the movable rice knife 302 and the material is increased by the inclined surface 308, and when the movable rice knife 302 is located at one end of the grinding chamber and protrudes from the end face of the fixed rice knife 303, the protruding section of the movable rice knife 302 can enhance the stirring and turning effect on the material, and at this time, the inclined surface 308 can guide the material, reduce the accumulation and jamming of the material, and further enhance the turning effect of the material, which is beneficial to improving the grinding efficiency and processing quality.

[0053] Preferably, please refer to Figure 1 As shown, the grinding roller assembly includes a rotatable grinding roller 401, and the outer wall of the grinding roller 401 is provided with spiral grooves.

[0054] It is understandable that the spiral grooves on the outer wall of the grinding roller 401 can enable the material to descend from top to bottom around the grinding roller, effectively increasing the descending speed of the material, reducing the internal pressure, and increasing the flow rate of the material. The grinding roller 401 cooperates with the rice cutter assembly 3 to grind and grind the material to achieve the purpose of shelling, roughing, and whitening.

[0055] Preferably, please refer to Figure 1 As shown, the grinding roller assembly also includes a main shaft and a rotary fan blade group, the main shaft is arranged in the grinding roller 401, the main shaft is driven to rotate by the driving mechanism, multiple sets of rotary fan blade groups are arranged on the main shaft along the axial direction of the main shaft, the rotary fan blade group includes multiple rotary wind blades arranged on the main shaft in a circumferential annular array along the main shaft, there is a gap between the outer end of the rotary wind blade and the grinding roller 401, and the main shaft is used to drive the rotary fan blade group and the grinding roller 401 to rotate. Among them, the main shaft drives the rotary wind blades to rotate, and the rotary wind blades can improve the air delivery efficiency of the external jet fan from the inside of the grinding roller 401 to the outside.

[0056] According to another aspect of the utility model, a rice milling and polishing machine is provided, which comprises the above-mentioned grinding chamber internal pressure regulating device.

[0057] The rice milling and polishing machine of the utility model also has the above-mentioned beneficial effects.

[0058] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0059] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection of the utility model.

Claims

1. A grinding chamber internal pressure regulating device, used for regulating the internal pressure of a grinding chamber (4) in a main body (1) of a rice milling and polishing machine, characterized in that: The grinding chamber internal pressure regulating device comprises: A grinding roller assembly, the grinding roller assembly is rotatably arranged in the grinding chamber (4); The knife assemblies (3) are arranged in a circular array outside the grinding roller assembly, a sieve plate (402) is arranged between each knife assemblies (3), a grinding chamber is formed between the knife assemblies (3) and the sieve plate (402) and the grinding roller assembly, and the knife assemblies (3) include movable knifes (302) that are movably arranged, and the distance between the movable knife (302) and the grinding roller assembly is adjustable so as to adjust the internal pressure of the grinding chamber.

2. The grinding chamber internal pressure regulating device according to claim 1, characterized in that: The rice cutter assembly (3) further comprises a rice cutter column (301) and an adjusting rod assembly. The rice cutter column (301) is vertically arranged in the main body (1). The rice cutter column (301) is provided with an adjusting rod assembly. One end of the adjusting rod assembly facing the center of the main body (1) is connected to the movable rice cutter (302). The adjusting rod assembly is used to drive the movable rice cutter (302) to translate radially along the main body (1).

3. The grinding chamber internal pressure regulating device according to claim 2, characterized in that: The rice cutter assembly (3) also includes a fixed rice cutter (303), which is arranged on both horizontal sides of the movable rice cutter (302), and the fixed rice cutter (303) is fixedly connected to the rice cutter column (301).

4. The grinding chamber internal pressure regulating device according to claim 2, characterized in that: The adjusting rod assembly comprises an adjusting screw rod (304) and a handle seat (305). The handle seat (305) is arranged on a side wall of a rice cutter column (301) which is away from the center of the main body (1). The adjusting screw rod (304) sequentially passes through the handle seat (305) and the rice cutter column (301) and is connected to the movable rice cutter (302) through a bearing. The adjusting screw rod (304) is used to drive the movable rice cutter (302) to translate radially along the main body (1).

5. The grinding chamber internal pressure regulating device according to claim 4, characterized in that: An adjusting handle (307) is provided at one end of the adjusting screw rod (304) located outside the handle seat (305).

6. The grinding chamber internal pressure regulating device according to claim 1, characterized in that: The side of the movable rice knife (302) facing the grinding component is a multi-segment structure, and viewed from the vertical cross-section direction of the movable rice knife (302), it is a multi-segment structure including at least one inclined surface (308) and at least one flat surface.

7. The grinding chamber internal pressure regulating device according to claim 1, characterized in that: The grinding roller assembly comprises a rotatable grinding roller (401), and the outer wall of the grinding roller (401) is provided with a spiral groove.

8. The grinding chamber internal pressure regulating device according to claim 7, characterized in that: The grinding roller assembly also includes a main shaft and a rotating fan blade group. The main shaft is arranged in the grinding roller (401). The main shaft is driven to rotate by a driving mechanism. A plurality of sets of rotating fan blade groups are arranged on the main shaft along the axial direction of the main shaft. The rotating fan blade group includes a plurality of rotating fan blades arranged on the main shaft in a circumferential annular array along the main shaft. There is a gap between the outer end of the rotating fan blade and the grinding roller (401). The main shaft is used to drive the rotating fan blade group and the grinding roller (401) to rotate.

9. The grinding chamber internal pressure regulating device according to claim 8, characterized in that: The rotary wind blades are provided with ventilation holes.

10. A rice milling and polishing machine, characterized in that: It comprises the grinding chamber internal pressure regulating device as described in any one of claims 1-9.

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