Precise rice husking machine huller blade adjusting mechanism and rice husking machine

Abstract

The invention provides a precise rice husking machine huller blade adjusting mechanism. The precise rice husking machine huller blade adjusting mechanism comprises a mounting frame body provided with a huller blade and a driving unit for driving the mounting frame body to rotate. The driving unit drives the mounting frame body extending in the axis direction of the emery roll to rotate by a specific angle, so that the huller blade mounted on the mounting frame body moves towards or away from the rice milling chamber, and the gap between the huller blade and the emery roll is adjusted. Tiny adjustment of the feeding distance of the huller blade is achieved by controlling rotation of the mounting frame body, accurate adjustment of the pressure of the rice milling chamber can be achieved, it is guaranteed that the pressure is evenly distributed in the machining process, accurate control over the rice pressure is achieved, and the stability of the quality of finished products is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of grain processing machinery, and in particular to a precise rice blade adjustment mechanism for a rice mill and a rice mill. Background Art

[0002] With the development of technology, the performance requirements for rice milling machinery are getting higher and higher, especially in terms of improving rice milling accuracy, reducing broken rice rate, and improving operating efficiency. During the rice milling process, the internal pressure of the rice milling chamber and its uniformity of distribution directly affect the milling efficiency and the quality of the finished product.

[0003] In traditional rice milling machines, the adjustment of the rice knife usually relies on manual operation, which is not only inefficient, but also difficult to ensure that the gap between the rice knife and the sand roller is accurate and consistent, thus affecting the rice milling effect and output. In the existing technology, although there are a variety of methods and structures for adjusting the gap between the rice knife and the sand roller, these solutions often have problems such as complex operation, low adjustment accuracy or poor adaptability. For example, Chinese invention patent application CN111450916A can achieve pressure adjustment of the discharge port by mechanical operation by setting a pressure adjustment mechanism at the discharge port, but because the pressure regulating plate is set at the discharge port at the end of the rice milling machine, it will cause uneven distribution of rice pressure inside the rice milling machine, the rice pressure at the end is relatively high, while the rice pressure at the front is relatively low, affecting the processing efficiency; at the same time, because the rice is piled up in front of the discharge port, the pressure is high and the rice temperature rises seriously.

[0004] CN113680415A adopts a rotating screw to push the rice cutter bracket to adjust the position. Although it can solve the problem of uneven internal pressure distribution, a slight change in the gap between the rice cutter and the sand roller will bring about a large change in pressure. Therefore, this method is not only labor-intensive and inefficient, but also difficult to achieve a high adjustment accuracy. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a precise rice blade adjustment mechanism for a rice mill and a rice mill.

[0006] The main contents of the present invention include:

[0007] A precise rice cutter adjustment mechanism for a rice mill comprises a mounting frame and a driving unit; the mounting frame extends along the axis direction of a sand roller, a rice cutter is mounted on the mounting frame, and the rice cutter extends from outside a rice screen into a rice milling chamber; the driving unit drives the mounting frame to rotate, so as to drive the rice cutter to move toward or away from the rice milling chamber.

[0008] Preferably, the rice cutter is connected to the mounting frame via a hinge structure, a first hinge of the hinge structure is fixedly connected to the mounting frame, a second hinge of the hinge structure is a free end, and the rice cutter is connected to the second hinge.

[0009] Preferably, it also includes a guide limit assembly, which includes a limit slot; the rice screen has a rice knife insertion opening connected to the rice milling chamber, and a limit plate body is provided at the rice knife insertion opening to close the rice knife insertion opening; the limit slot is opened on the limit plate body and extends along the axial direction of the sand roller.

[0010] Preferably, the guide and limit assembly also includes a left cross beam plate and a right cross beam plate arranged relatively to each other, and an adjustment space for the rice knife to pass through is provided between the left cross beam plate and the right cross beam plate, and a plurality of adjustment shafts are arranged in the adjustment space, and a guide blind groove is provided downward on the upper end surface of the rice knife, and the adjustment shaft passes through the guide blind groove and its two ends are respectively connected to the left cross beam plate and the right cross beam plate.

[0011] Preferably, the limit plate body includes a left limit plate and a right limit plate that are relatively arranged; the limit slot is formed between the left limit plate and the right limit plate; the rice screen includes a left screen and a right screen, and the left screen and the right screen are respectively connected to the left cross beam plate and the right cross beam plate.

[0012] Preferably, the number of the rice cutters, the mounting frame and the connecting rod assembly is two, and the two rice cutters are arranged opposite to each other; and the two first connecting rods are integrally formed.

[0013] Preferably, the connecting rod assembly includes a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixedly connected to the driving unit, and the other end of the first connecting rod is rotatably connected to one end of the second connecting rod through a first pin shaft; the other end of the second connecting rod is rotatably connected to one end of the third connecting rod through a second pin shaft, and the other end of the third connecting rod is fixedly connected to the mounting frame.

[0014] Preferably, the driving unit comprises a driving motor; or the driving unit comprises a driving motor and a host computer, and the host computer controls the output of the driving motor according to the feedback current of the driving motor. The inner wall of the rice screen is provided with a plurality of rice milling convex strips, and the plurality of rice milling convex strips are arranged in a spiral.

[0015] The present invention also proposes a rice milling machine, comprising two rice milling devices arranged upper and lower and an auger arranged between the two rice milling devices; the rice milling device comprises an emery roller, a rice screen arranged outside the emery roller and a rice knife adjustment mechanism; the rice knife adjustment mechanism is the above-mentioned precise rice knife adjustment mechanism of a rice milling machine.

[0016] Preferably, the rice milling machine comprises a feed port and a first feed channel and a second feed channel, one end of the first feed channel being connected to the feed port, the other end of the first feed channel being connected to the upper rice milling device; the other end of the second feed channel being connected to the lower rice milling device or connected to the lower rice milling device through the auger.

[0017] Compared with the prior art, the precise rice knife adjustment mechanism for a rice mill and the rice milling machine proposed in the present invention have the following beneficial effects: the precise rice knife adjustment mechanism for a rice mill proposed in the present invention drives the mounting frame extending along the axis direction of the emery roller to rotate a specific angle through a driving unit, so that the rice knife installed on the mounting frame moves toward or away from the rice milling chamber, thereby realizing the adjustment of the gap between the rice knife and the emery roller; the present invention realizes a slight adjustment of the rice knife feeding distance by controlling the rotation of the mounting frame, and can realize the precise adjustment of the pressure in the rice milling chamber, which not only ensures uniform pressure distribution during the processing process, but also realizes precise control of the rice pressure, thereby ensuring the stability of the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the rice knife adjustment mechanism of the present invention;

[0019] Figure 2 is a cross-sectional schematic diagram of the rice knife adjustment mechanism of the present invention;

[0020] Figure 3 This is a schematic diagram of the overall structure of the rice knife adjustment mechanism of the present invention without the rice screen and the sand roller;

[0021] Figure 4 This is a cross-sectional schematic diagram of the rice cutter adjustment mechanism of the present invention without the rice screen and the sand roller;

[0022] Figure 5 It is a schematic diagram of the overall structure of the rice milling machine of the present invention;

[0023] Figure 6 It is a schematic diagram of the internal structure of the rice milling machine of the present invention;

[0024] Reference numerals:

[0025] 1-upper rice milling device; 10-mounting frame; 11-connecting rod assembly; 111-first connecting rod; 112-second connecting rod; 113-third connecting rod; 114-first pin shaft; 115-second pin shaft; 12-driving unit; 13-rice knife; 130-guide blind groove; 14-rice screen; 141-left screen; 142-right screen; 15-emery roller; 150-rice milling chamber; 16-folding structure; 17-protective cover; 2-auger; 20-limiting plate body; 200-limiting notch; 201-left limiting plate; 202-right limiting plate; 21-left cross beam plate; 22-right cross beam plate; 23-adjusting shaft;

[0026] 3-lower rice milling device; 300-feeding port; 31-first feeding channel; 32-second feeding channel. DETAILED DESCRIPTION

[0027] The technical solution protected by the present invention is described in detail below with reference to the accompanying drawings.

[0028] The present invention proposes a precise rice blade adjustment mechanism for a rice mill, which can achieve a slight adjustment of the gap between the rice blade and the sand roller, and achieve precise adjustment and control of the rice pressure. Figures 1 to 4 The rice knife adjustment mechanism includes a mounting frame 10 and a driving unit 12 ( Figures 1 to 4 Not shown, see Figure 6 ); As a prior art, the rice milling chamber is surrounded by an emery roller, a rice screen and a rice knife arranged outside the emery roller, and the grains to be processed enter from a feed port at one end, and enter the processing area via a feeding roller arranged at one end of the emery roller 15, and the rice milling process is carried out in the rice milling chamber, and the seed coat on the surface of the grains is removed by continuous friction, and then the grains are discharged through a discharge port connected to the other end of the emery roller 15; similarly, the rice milling chamber 150 of the present invention is also composed of an emery roller 15, a rice screen and a rice knife 13 arranged outside the emery roller 15, and further, a plurality of spirally arranged feeding convex strips are arranged on the inner surface of the rice screen 14, which can not only guide the grains to the other end of the emery roller 15, but also increase the travel of the grains and increase the processing time of the grains; The feeding roller arranged at one end of the emery roller 15 enters the processing area and performs rice milling in the rice milling chamber 150. The seed coat on the surface of the grains is removed by continuous friction. A plurality of spirally arranged feeding convex strips are also arranged on the inner surface of the rice screen 14, which can not only guide the grains to the other end of the emery roller 15, but also increase the stroke of the grains and the processing time of the grains. The rice knife 13 is installed on a mounting frame 10 extending along the axial direction of the emery roller 15, and the driving unit 12 drives the mounting frame 10 to rotate through the connecting rod assembly 11, so that the rice knife 13 can move toward or away from the rice milling chamber, thereby changing the gap between the rice knife 13 and the emery roller 15, thereby adjusting the rice pressure in the rice milling chamber.

[0029] Please combine Figures 2 to 4 , Figure 6The mounting frame 10 is extended along the axial direction of the sand roller and is arranged on the outside of the rice screen 14, and the rice knife 13 extends from the outside of the rice screen 14 to the inside of the rice milling chamber 150; the rice knife 13 is installed on the mounting frame 10 through a folding structure 16, specifically, the first fold of the folding structure 16 is fixedly installed on the mounting frame 10, and the rice knife 13 is installed on its second fold, and the second fold is a free end. In one embodiment, the driving unit 12 includes a driving motor, which is a combination of the driving motor, the mounting frame 10, the folding structure 16 and the rice knife 13. The driving motor drives the mounting frame 10 to rotate, so that the second fold of the folding structure 16 rotates around the central axis of the fold. The rice cutter 13 moves with the first folding leaf 10, and the rice cutter 13 can move within a certain range. For example, when the first folding leaf is horizontal, the second folding leaf is at a right angle, an acute angle or an obtuse angle with the first folding leaf under the interference of the mounting frame 10. At this time, the rice cutter 13 also moves accordingly, and the distance between the rice cutter and the emery roller at this time is recorded as the first distance; when the first folding leaf is vertical and the second folding leaf is not interfered by the mounting frame, the rice cutter 13 is also completely vertical, and the distance between the rice cutter and the emery roller at this time is recorded as the second distance. It can be seen that the first distance is greater than the second distance. By reasonably designing the mounting frame 10 and the folding leaf structure 16, the gap distance between the rice cutter and the emery roller 15 can be accurately adjusted by rotating the mounting frame 10 at a certain angle.

[0030] In this embodiment, the cross section of the mounting frame 10 is a square, but it can also be a circle or other polygonal shape, as long as the rotation angle and the change distance of the knife are pre-designed. Figure 4 As shown, in order to ensure the movement accuracy of the rice cutter 13, the adjustment mechanism also includes a guide and limit assembly. Specifically, the rice screen 14 includes a left screen 141 and a right screen 142 symmetrically arranged, and the left screen 141 and the right screen 142 are C-shaped; a rice cutter insertion opening is formed between the left screen and the right screen, so that the rice cutter 13 can extend into the rice milling chamber 150 through the rice cutter insertion opening; a limit plate body 20 is arranged in the rice cutter insertion opening, and a limit slot 200 is provided on the limit plate body 20. In this embodiment, the limit plate body 20 includes a left limit plate 201 and a right limit plate 202 arranged oppositely; the limit slot 200 is formed between the left limit plate 201 and the right limit plate 202; through the setting of the limit slot 200, the rice cutter 13 is limited in the limit slot 200, does not shake during the working process, and plays a role of guide and limit in the adjustment process.

[0031] Furthermore, in order to enhance the stability of the rice cutter during adjustment and operation, the guide limit assembly further includes a left cross beam plate 21 and a right cross beam plate 22 arranged relatively to each other, and an adjustment space for the rice cutter to pass through is provided between the left cross beam plate 21 and the right cross beam plate 22, and a plurality of adjustment shafts 23 are arranged in the adjustment space, and a guide blind groove 130 is provided downwardly on the upper end surface of the rice cutter 13, and the adjustment shaft 23 passes through the guide blind groove 130 and its two ends are respectively connected to the left cross beam plate 21 and the right cross beam plate 23. The left screen 141 and the right screen 142 are respectively connected to the left cross beam plate 201 and the right cross beam plate 202.

[0032] Please refer to Figure 1 , the number of the rice cutters 13 and the mounting frame 10 is two, and the two rice cutters 13 are arranged opposite to each other; at this time, the driving unit realizes the common adjustment of the two rice cutters 13 through the connecting rod assembly 11; specifically, the connecting rod assembly 11 includes a first connecting rod 111, a second connecting rod 112 and a third connecting rod 113, one end of the first connecting rod 111 is fixedly connected to the driving unit 12, and the other end thereof is rotatably connected to one end of the second connecting rod 112 through a first pin shaft 114; the other end of the second connecting rod 112 is rotatably connected to one end of the third connecting rod 113 through a second pin shaft 115, and the other end of the third connecting rod 113 is fixedly connected to the mounting frame 10.

[0033] In other embodiments, the drive unit 12 includes a host computer in addition to the drive motor, and the host computer controls the output of the drive motor according to the feedback current of the drive motor. The existing pressurization method is performed manually, and the pressure is increased or reduced by observing the state of the grain after processing. It has hysteresis and requires people to constantly take samples and adjust. The pressure regulation method of the present invention is to adjust the pressure through a motor. When the rice pressure is large, the motor current is large, and when the rice pressure is small, the motor current is small. Through the feedback of the motor current size, the motor automatically adjusts to stabilize the current near the specified value, thereby ensuring the stability of the rice pressure.

[0034] like Figure 5 and Figure 6 As shown, the present invention also proposes a rice milling machine, comprising two rice milling devices arranged up and down - an upper rice milling device 1 and a lower rice milling device 3, and an auger 2 arranged between the two rice milling devices; the upper rice milling device 1 and the lower rice milling device both include the above-mentioned rice knife adjustment mechanism, and different driving units are used for pressure adjustment, so that different rice pressure controls can be achieved in different processing processes.

[0035] In addition, the rice milling machine includes a feed port 300 and a first feed channel 31 and a second feed channel 32, one end of which is connected to the feed port 300. The other end of the first feed channel 31 is connected to the upper rice milling device 1; the other end of the second feed channel 32 is connected to the rice milling device below or to the rice milling device below through the auger. When only one rice milling is required, the grains to be processed are sent to the rice milling device below through the second feed channel 32, and can be discharged after completion; and when the grains need to be milled multiple times, the grains can be sent to the upper rice milling device through the first feed channel, and after the first rice milling is completed, they are transferred to the lower rice milling device through the auger, and finally discharged; the rice milling machine of the present invention has only one feed port 300, and a corresponding guide plate can be set in the feed port so that the grains to be processed can smoothly enter the corresponding interface in the rice milling device.

[0036] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A precise rice blade adjustment mechanism for a rice mill, characterized in that: It includes a mounting frame and a driving unit; the mounting frame extends along the axis direction of the sand roller, and a rice knife is installed on the mounting frame, and the rice knife extends from the outside of the rice screen to the inside of the rice milling room; The driving unit drives the mounting frame to rotate, so as to drive the rice knife to move toward or away from the rice milling chamber.

2. The precise rice blade adjustment mechanism for a rice mill according to claim 1, characterized in that: The rice cutter is connected to the mounting frame through a hinge structure, a first hinge of the hinge structure is fixedly connected to the mounting frame, a second hinge of the hinge structure is a free end, and the rice cutter is connected to the second hinge.

3. The precise rice blade adjustment mechanism for a rice mill according to claim 2, characterized in that: The number of the rice cutters and the mounting frame is two, and the two rice cutters are arranged opposite to each other.

4. The precise rice blade adjustment mechanism for a rice mill according to claim 3, characterized in that: It also includes a connecting rod assembly, and the driving unit drives the mounting frame to rotate through the driving assembly; The connecting rod assembly includes a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixedly connected to the driving unit, and the other end of the first connecting rod is rotatably connected to one end of the second connecting rod through a first pin shaft; the other end of the second connecting rod is rotatably connected to one end of the third connecting rod through a second pin shaft, and the other end of the third connecting rod is fixedly connected to the mounting frame.

5. The precise rice blade adjustment mechanism for a rice mill according to claim 1, characterized in that: It also includes a guide and limit assembly, which includes a limit slot; the rice screen has a rice knife insertion opening connected to the rice milling chamber, and a limit plate body is provided at the rice knife insertion opening to close the rice knife insertion opening; the limit slot is arranged on the limit plate body and extends along the axial direction of the sand roller.

6. The precise rice blade adjustment mechanism for a rice mill according to claim 5, characterized in that: The guide and limit assembly also includes a left cross beam plate and a right cross beam plate that are arranged relatively to each other, and an adjustment space for the rice knife to pass through is provided between the left cross beam plate and the right cross beam plate, and a plurality of adjustment shafts are arranged in the adjustment space, and a guide blind groove is provided downward on the upper end surface of the rice knife, and the adjustment shaft passes through the guide blind groove and its two ends are respectively connected to the left cross beam plate and the right cross beam plate.

7. The precise rice blade adjustment mechanism for a rice mill according to claim 6, characterized in that: The limit plate body includes a left limit plate and a right limit plate that are arranged opposite to each other; the limit slot is formed between the left limit plate and the right limit plate; the rice screen includes a left screen and a right screen, and the left screen and the right screen are respectively connected to the left cross beam plate and the right cross beam plate.

8. A precise rice blade adjustment mechanism for a rice mill according to any one of claims 1 to 7, characterized in that: The driving unit includes a driving motor; or the driving unit includes a driving motor and a host computer, and the host computer controls the output of the driving motor according to a feedback current of the driving motor.

9. A rice milling machine, characterized in that: It comprises two rice milling devices arranged up and down and an auger arranged between the two rice milling devices; the rice milling device comprises an emery roller, a rice screen arranged outside the emery roller and a rice knife adjustment mechanism; the rice knife adjustment mechanism is a precise rice knife adjustment mechanism of a rice milling machine as described in any one of claims 1 to 8.

10. The rice milling machine according to claim 9, characterized in that: The rice milling machine comprises a feed port and a first feed channel and a second feed channel whose one end is connected to the feed port. The other end of the first feed channel is connected to the upper rice milling device; the other end of the second feed channel is connected to the lower rice milling device or is connected to the lower rice milling device through the auger.

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