White rice grading device

Abstract

The utility model relates to the technical field of rice processing, in particular to a white rice grading device which comprises a screening box body, a multi-stage screen is arranged in the screening box body, a vibrator and supporting legs are arranged at the bottom of the screening box body, a pre-screening frame of a rectangular frame body structure is arranged at an inlet of the screening box body, and the pre-screening frame is connected with the screening box body. A servo motor for driving the pre-screening frame is arranged outside the upper end of the screening box body, a plurality of angle-adjustable material blocking plates are evenly arranged in the pre-screening frame, a plurality of rectangular material distributing openings are evenly formed in the bottom inner wall of the pre-screening frame, and the material blocking plates and the rectangular material distributing openings jointly form a pre-screening mechanism of the screening box body. According to the white rice grading device, by optimizing the structural design, the dispersity and fluidity of rice are remarkably improved, small particles or broken rice are effectively prevented from being mixed in, more accurate grading is achieved, and meanwhile the working efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rice processing technical field, concretely is a white rice grading device. BACKGROUND

[0002] In the agricultural production and processing process, as an important food crop, the quality of rice directly affects the health and dining experience of consumers. With the improvement of people's living standards, the requirements for food quality are also increasingly strict, especially for staple products such as rice, not only the nutritional value is required to be high, but also the appearance color, shape and size also need to reach a certain standard. Therefore, white rice grading has become one of the important links in the process of rice processing, which can effectively improve the market competitiveness of products and meet the needs of different consumers.

[0003] In the prior art, the traditional white rice grading device mostly adopts the way of vibrating sieve to work, that is, by setting sieve nets with different aperture to realize the size grading of rice. However, in the actual operation process, due to the difference in shape and weight of rice, this simple physical screening method is difficult to accurately classify rice, especially when dealing with high-mixed raw materials, the problem of inaccurate grading is easy to occur, which leads to the mixing of small particles or broken rice into high-quality rice, affecting the quality and purity of the final product. At the same time, due to the lack of effective dispersion mechanism, the traditional device often causes the accumulation or uneven distribution of rice during operation, further increasing the difficulty of grading and reducing the work efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a white rice grading device to solve the problem of inaccurate grading of the current traditional white rice grading device when dealing with high-mixed raw materials, easy mixing of small particles or broken rice into high-quality rice and lack of effective dispersion mechanism leading to uneven distribution of rice.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a white rice grading device, comprising a screening box body, a plurality of sieve nets are arranged in the inside of the screening box body, a vibrating machine and a supporting leg are arranged at the bottom of the screening box body, a pre-screening frame with a rectangular frame structure is arranged at the inlet of the screening box body, a servo motor driving the pre-screening frame is arranged outside the upper end of the screening box body, a plurality of adjustable angle baffle plates are uniformly arranged in the inside of the pre-screening frame, a plurality of rectangular material distribution ports are uniformly arranged on the inner wall of the bottom of the pre-screening frame, and the baffle plate and the rectangular material distribution port jointly constitute the pre-screening mechanism of the screening box body.

[0006] Preferably, the rear end of the baffle plate is provided with an adjusting shaft penetrating through the side wall of the pre-screening frame, and a positioning ring is arranged outside the connection between the pre-screening frame and the adjusting shaft.

[0007] Preferably, the two outer walls on both sides of the bottom end of the pre-screening frame are provided with arc-shaped guide blocks, and the two inner walls on both sides of the upper end of the screening box body are provided with arc-shaped guide seats matched with the structure of the arc-shaped guide blocks.

[0008] Preferably, the four corners of the outer wall of the bottom end of the screening box body are provided with reinforcing rods, and the top end of the supporting leg is provided with a limiting ring.

[0009] Preferably, the bottom end of the reinforcing rod is inserted into the inside of the limiting ring, and the inside of the limiting ring is provided with an elastic limiting ring.

[0010] Preferably, the front and rear sides of the inner wall of the upper end of the screening box body are provided with elastic pads, and a certain gap is reserved between the front and rear sides of the inner wall of the upper end of the screening box body and the front and rear outer walls of the pre-screening frame.

[0011] Compared with the prior art, the white rice grading device has the advantages that: the white rice grading device improves the dispersibility and flowability of rice, effectively avoids the mixing of small particles or broken rice, realizes more accurate grading, and improves the working efficiency and product quality. The device ensures the uniform distribution and preliminary screening of the material through the design of the pre-screening frame, the adjustable angle of the material blocking plate and the uniform distribution of the rectangular material distribution port, reduces the material accumulation phenomenon, and solves the problems of inaccurate grading and low efficiency in the traditional grading device. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a white rice grading device structure schematic view of the utility model;

[0013] Fig. 2 It is a screening box body inside downward structure schematic view of the white rice grading device of the utility model;

[0014] Fig. 3 It is a screening box body outside side structure schematic view of the white rice grading device of the utility model.

[0015] In the drawing: 1, screening box body; 2, multistage screen; 3, vibration machine; 4, supporting leg; 5, servo motor; 6, pre-screening frame; 61, material blocking plate; 62, rectangular material distribution port; 63, adjusting shaft; 64, positioning ring; 7, arc-shaped guide block; 8, arc-shaped guide seat; 9, reinforcing rod; 10, limiting ring. DETAILED DESCRIPTION

[0016] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0017] Please refer to Figs. 1-3The utility model provides a technical scheme: a white rice grading device, including screening box 1, the inside of screening box 1 is equipped with multistage screen 2, screening box 1 with multistage screen 2 lower side corresponding position is equipped with the discharge gate, this discharge gate's outside is equipped with the guide frame of material, and the bottom of screening box 1 is equipped with vibration machine 3 and support leg 4 respectively, the top of support leg 4 all is connected with the bottom of screening box 1 through damping spring, the entrance of screening box 1 is equipped with the pre-screening frame 6 of rectangular frame body structure, the both sides outer wall of pre-screening frame 6 all are connected with the both sides inner wall of screening box 1 through pivot, the outside of screening box 1 upper end is fixedly installed with the servo motor 5 of driving pre-screening frame 6 through bolt, and the inside of pre-screening frame 6 is evenly equipped with a plurality of adjustable angle's baffle 61, the bottom inner wall of pre-screening frame 6 is evenly equipped with a plurality of rectangular material outlet 62, baffle 61 and rectangular material outlet 62 jointly constitute the pre-screening mechanism of screening box 1, this structure when material enters pre-screening frame 6 from the entrance of screening box 1, servo motor 5 can make pre-screening frame 6 produce rotary motion by starting, and then drive the inside baffle 61 to rotate around pivot 63 as the center, since the angle of baffle 61 is adjustable, thus can be adjusted to the most suitable angle according to the characteristics of material, make material in the process of passing pre-screening frame 6 can be more evenly distributed on each rectangular material outlet 62, when material passes these rectangular material outlet 62, will evenly fall on multistage screen 2, start further fine screening, simultaneously, vibration machine 3 continuously works in this process, ensure that material can quickly and evenly move on multistage screen 2, to realize high -efficient screening, the whole process not only effectively improves the dispersibility and fluidity of material, and by the combined use of pre-screening frame 6 and multistage screen 2, greatly reduce the possibility of small particles or broken rice mixed into high -quality rice, improve the grading accuracy, the design also solves the problem of low working efficiency and inaccurate grading due to lack of effective dispersion mechanism in traditional device, realizes the efficient, accurate grading of white rice, guarantees the quality and purity of final product, the rear end of baffle 61 is equipped with the adjusting pivot 63 of penetrating on the lateral wall of pre-screening frame 6, and the outside of pre-screening frame 6 and adjusting pivot 63 junction is equipped with the locating ring 64, the locking screw of inserting through the thread structure on locating ring 64, this structure when needing to adjust the angle of baffle 61, first loosen the locking screw on locating ring 64, then manually rotate baffle 61 to the required position, again tighten the locking screw and fix the position of baffle 61, to realize the flexible adjustment of the angle of baffle 61, ensure the uniform distribution of material in pre-screening frame 6, also guarantee the stability of baffle 61 in the working process through the fixing effect of locking screw, avoid the angle change due to vibration, to improve the accuracy and efficiency of screening, the both sides outer wall of pre-screening frame 6 bottom end are all welded fixedly with arc guide 7,And the two sides of the upper end of the screening box 1 are welded with arc-shaped guide seats 8 matched with the structure of the arc-shaped guide block 7. When the pre-screening frame 6 rotates forward and backward under the drive of the servo motor 5, the arc-shaped guide block 7 can smoothly slide along the arc-shaped guide seat 8, ensuring the stable movement of the pre-screening frame 6 and avoiding uneven distribution of materials due to shaking or deviation. This not only improves the stability and reliability of the movement of the pre-screening frame 6, but also reduces the frictional resistance in the movement process through the close cooperation of the arc-shaped guide block 7 and the arc-shaped guide seat 8, prolonging the service life of the equipment and effectively ensuring the uniform distribution and efficient processing of materials in the pre-screening stage, improving the overall screening efficiency and quality. The four corners of the bottom outer wall of the screening box 1 are fixed with vertically distributed reinforcing rods 9 through screws, and the top end of the supporting leg 4 is provided with a limiting ring 10, the bottom end of the reinforcing rod 9 is inserted into the inside of the limiting ring 10, and the inside of the limiting ring 10 is provided with an elastic limiting ring. When the screening box 1 operates, the vibration generated by the vibrating machine 3 is transmitted to the reinforcing rod 9 through the screening box 1, and the elastic limiting ring between the reinforcing rod 9 and the limiting ring 10 can absorb part of the vibration energy, reducing the influence of vibration on the supporting leg 4, thereby maintaining the stability of the whole equipment. This not only enhances the structural strength of the screening box 1 and prevents deformation or damage of the equipment caused by long-term vibration, but also ensures the smooth operation of the equipment under high-frequency vibration working condition through the buffering effect of the elastic limiting ring, improving the service life and working reliability of the equipment. The front and rear sides of the upper end inner wall of the screening box 1 are fixed with elastic pads made of rubber material, and a certain gap is reserved between the front and rear sides of the upper end inner wall of the screening box 1 and the outer walls of the pre-screening frame 6. The elastic pads on the upper end inner wall of the screening box 1 can effectively absorb and buffer the impact force between the pre-screening frame 6 and the inner wall of the screening box 1, preventing direct collision and causing wear or damage. The reserved gap ensures that the pre-screening frame 6 has enough space to rotate freely, avoiding interference with the inner wall of the screening box 1 during movement and ensuring the stable operation of the pre-screening frame 6.

[0018] Working principle: when using the white rice grading device, first, a plurality of baffle plates 61 evenly arranged in the pre-screening frame 6 are rotated around the rotating shaft 63 until the most suitable position is reached according to the material characteristics, and then the locking screw on the positioning ring 64 is fixed, when the graded white rice is added from the inlet of the screening box 1, the material will first enter the pre-screening frame 6, at this time, the servo motor 5 is started, the pre-screening frame 6 is driven to rotate by the rotating shaft, the pre-screening frame 6 drives the arc-shaped guide block 7 to move smoothly along the arc-shaped guide seat 8, and the baffle plates 61 are evenly distributed on each rectangular material distribution port 62, and then evenly fall on the multi-stage screen 2, at the same time, the vibrator 3 continuously works, and the vibration makes the material move quickly and uniformly on the multi-stage screen 2, and the fine screening is carried out, during the vibration process, the vibration energy generated by the vibrator 3 is transmitted to the reinforcing rod 9 at the bottom through the screening box 1, the reinforcing rod 9 interacts with the elastic limiting ring inside the limiting ring 10 at the top of the supporting leg 4, absorbs part of the vibration energy, reduces the influence of vibration on the supporting leg 4, and maintains the stability of the whole equipment, the elastic pads arranged on the front and rear sides of the inner wall of the upper end of the screening box 1 can effectively absorb and buffer the impact force between the pre-screening frame 6 and the inner wall of the screening box 1, the material screened by the multi-stage screen 2 will move to the lower side along the inclined direction, and finally be discharged through the discharge port, so as to complete a series of work.

[0019] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A white rice grading device, comprising a screening box (1), the inside of the screening box (1) is provided with a plurality of levels of screen meshes (2), and the bottom of the screening box (1) is respectively provided with a vibrating machine (3) and a supporting leg (4), characterized in that: The pre-screening frame (6) in rectangular frame structure is arranged at the inlet of the screening box (1), the servo motor (5) driving the pre-screening frame (6) is arranged at the outer upper end of the screening box (1), the inside of the pre-screening frame (6) is uniformly provided with a plurality of adjustable angle material blocking plates (61), the bottom inner wall of the pre-screening frame (6) is uniformly provided with a plurality of rectangular material distribution ports (62), and the material blocking plate (61) and the rectangular material distribution port (62) jointly constitute the pre-screening mechanism of the screening box (1).

2. A white rice grading device as claimed in claim 1, wherein: The rear end of the material blocking plate (61) is provided with an adjusting rotating shaft (63) penetrating through the side wall of the pre-screening frame (6), and the outer side of the connecting position of the pre-screening frame (6) and the adjusting rotating shaft (63) is provided with a positioning ring (64).

3. A white rice grading device as claimed in claim 1, wherein: The bottom end of the pre-screening frame (6) is provided with an arc-shaped guide block (7) on the outer wall of each side, and the upper end of the screening box (1) is provided with an arc-shaped guide seat (8) matched with the structure of the arc-shaped guide block (7) on the inner wall of each side.

4. A white rice grading device as claimed in claim 1, wherein: The four corners of the bottom outer wall of the screening box (1) are provided with reinforcing rods (9), and the top end of the supporting leg (4) is provided with a limiting ring (10).

5. A white rice grading device as claimed in claim 4, wherein: The bottom end of the reinforcing rod (9) is inserted into the inside of the limiting ring (10), and the inside of the limiting ring (10) is provided with an elastic limiting ring.

6. A white rice grading device as claimed in claim 1, wherein: The front and rear sides of the upper end inner wall of the screening box (1) are provided with elastic pads, and a certain gap is reserved between the front and rear sides of the upper end inner wall of the screening box (1) and the front and rear outer walls of the pre-screening frame (6).

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