Multi-stage fine selection tool for rice

Abstract

The utility model discloses a rice multi-stage fine selecting tool which comprises a screening machine, a discharging hopper is fixedly connected to the upper face of the screening machine, triangular dispersing blocking columns are fixedly connected in the discharging hopper, limiting sliding grooves are formed in the inner walls of the two sides of the screening machine, three screening frames are installed in the screening machine in a sliding mode, and the three screening frames are distributed up and down at equal intervals. The front end of the screening frame inclines downwards, limiting sliding blocks are fixedly connected to the two sides of the screening frame and are in sliding fit with the limiting sliding grooves, three discharging openings are formed in the front face of the screening machine and are matched with the screening frame, and a screen is installed in the screening frame in an embedded mode. The threaded rod can be driven to rotate by starting the adjusting motor, the threaded rod rotates to drive the baffle to move, then the gap between the lower portion of the baffle and the upper portion of the screening frame is adjusted, the thickness of rice sliding off from the screening frame is controlled, the situation that rice on the upper layer cannot be effectively screened by the screen due to the fact that the rice is thick and stacked together is avoided, and the screening effect is improved.

Description

Technical Field

[0001] The utility model relates to a rice screening device, in particular to a multi-stage fine selection tooling for rice. Background Technique

[0002] In the processing and production of rice, it is necessary to roll and remove the rice husk and then carry out finished product processing. During the finished product processing, the rice will be screened at multiple levels to select rice of different sizes. Different sizes of rice determine different grades of rice and also play an important role in the price.

[0003] For example, a rice length classifier with the publication number of CN217474018U disclosed in the Chinese patent includes a base. A driving motor and two support columns symmetrically centered on the driving motor are fixedly installed on the top of the base. A processing box is fixedly installed between the tops of the two support columns. Three groups of connecting frames are sequentially arranged on the left and right inner walls of the processing box from top to bottom. A screening cylinder is fixedly installed in the middle of each group of connecting frames. A first screen, a second screen and a third screen are respectively arranged in the three screening cylinders. The output end of the driving motor is fixedly installed with a rotating rod mechanism. The rotating rod mechanism sequentially penetrates through the centers of the three screening cylinders. Two symmetric side plates are fixedly installed on the rotating rod mechanism inside the three screening cylinders. A scraping strip is arranged at the bottom of each side plate. A material hole is arranged at the top of the processing box. The utility model has a compact structure and is easy to operate, solving the problems of low efficiency and incomplete classification of rice length classification.

[0004] Some problems are found when using the above-mentioned existing rice length classifier. First, after the first screen, the second screen and the third screen complete the rice screening and classification, the operator needs to open the box door and sequentially remove the first screen, the second screen and the third screen to complete the collection of rice. Secondly, the rice is piled up together, and the upper-layer rice does not contact the screen, resulting in the upper-layer rice not being screened in time. It is necessary to stir the rice with the scraping strip for a long time to make the upper-layer rice contact the screen, which leads to the problem of low screening efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-stage fine selection tooling for rice to solve the problems presented in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: A multi-stage rice selection tooling, including a screening machine, a feeding hopper is fixedly connected above the screening machine, a triangular dispersion baffle column is fixedly connected inside the feeding hopper, limiting sliding grooves are opened on both inner walls of the screening machine, three screening frames are slidably installed inside the screening machine, the three screening frames are equidistantly distributed up and down and are inclined downward at the front end, limiting sliders are fixedly connected to both sides of the screening frame, and the limiting sliders are slidably matched with the limiting sliding grooves. Three discharge ports are opened on the front of the screening machine, and the discharge ports are matched with the screening frames. A screen is embedded and installed inside the screening frame. Vertical frames are symmetrically fixedly connected to the left and right on the upper surface of the screening frame. Connecting sliding grooves are opened on the opposite surfaces of the two vertical frames, and a baffle is slidably installed inside the connecting sliding grooves.

[0007] Preferably, an installation groove is opened on one side of the screening machine, a collection box is slidably installed inside the installation groove, and a guide plate is fixedly connected on the front of the screening machine and below the discharge port.

[0008] Preferably, a driving motor is fixedly connected to the inner wall of the screening machine through a motor base, a rotating disk is fixedly connected to the output end of the driving motor, an eccentric shaft is rotatably installed at a position near the edge on the rotating disk, a rotating disk is fixedly connected to the upper end of the eccentric shaft, and a bearing seat is rotatably connected to the rotating disk through a shaft, and the bearing seat is fixedly connected to the inner wall of the screening machine.

[0009] Preferably, a connecting square frame is fixedly connected to the back of the screening frame, and the connecting square frame is matched with the eccentric shaft.

[0010] Preferably, a threaded rod is rotatably installed inside one of the connecting sliding grooves, an adjusting motor is fixedly connected to the upper surface of the connecting sliding groove, the output end of the adjusting motor is fixedly connected to the threaded rod, a threaded through hole is opened at a position near one edge inside the baffle, and the threaded through hole is in threaded cooperation with the threaded rod.

[0011] Preferably, a guiding inclined plate is fixedly connected inside the screening machine and between the two screening frames.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By starting the driving motor to drive the eccentric shaft to perform eccentric rotation, and the eccentric shaft is matched with the connecting square frame, the screening frame can be driven to make reciprocating movements, thereby generating vibrations. At the same time, the screening frame is in an inclined state with the front end downward, and the vibrations will assist the rice on the screening frame to slide down through the discharge port to the guide plate and be automatically discharged, without the need for manual collection.

[0014] 2. By starting the adjustment motor, the threaded rod can be driven to rotate. The rotation of the threaded rod can drive the baffle to move, thereby adjusting the gap between the lower part of the baffle and the upper part of the screening box, controlling the thickness of the rice slipping on the upper part of the screening box, avoiding the thick accumulation of rice together, resulting in the ineffective screening of the upper-layer rice by the sieve, and improving the screening effect. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a sectional view of the present utility model;

[0017] Figure 3 is a half-sectional view of the screening machine of the present utility model;

[0018] Figure 4 is a schematic diagram of the structure of the screening box of the present utility model;

[0019] Figure 5 of the present utility model Figure 4 is an enlarged view of part A in

[0020] In the figure: 1. Screening machine; 101. Collection box; 102. Limit sliding groove; 103. Discharge port; 104. Guide plate; 2. Feeding hopper; 201. Triangular dispersion baffle post; 3. Driving motor; 301. Rotating disk; 302. Eccentric shaft; 4. Screening box; 401. Sieve; 402. Limit slider; 403. Connecting square frame; 5. Upright frame; 501. Connecting sliding groove; 502. Threaded rod; 503. Adjustment motor; 504. Baffle; 505. Threaded through hole; 6. Guide inclined plate. Detailed Description of the Preferred Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-5, the utility model provides a technical solution: a multi-stage rice selection tooling, including a screening machine 1, a feeding hopper 2 is fixedly connected above the screening machine 1, a triangular dispersion baffle column 201 is fixedly connected inside the feeding hopper 2, limiting sliding grooves 102 are opened on both inner walls of the screening machine 1, three screening frames 4 are slidably installed inside the screening machine 1, the three screening frames 4 are equidistantly distributed up and down and are inclined downward at the front end, limiting sliding blocks 402 are fixedly connected to both sides of the screening frame 4, and the limiting sliding blocks 402 are slidably matched with the limiting sliding grooves 102. Three discharge ports 103 are opened on the front surface of the screening machine 1, and the discharge ports 103 are matched with the screening frames 4. A screen 401 is embedded and installed in the screening frame 4. Vertical frames 5 are fixedly connected symmetrically left and right above the screening frame 4. Connecting sliding grooves 501 are opened on the opposite surfaces of the two vertical frames 5, and a baffle 504 is slidably installed in the connecting sliding grooves 501.

[0023] In this implementation scheme, the rice to be screened is filled into the feeding hopper 2, and then the feeding hopper 2 is used to slowly drop the rice onto the screening frame 4 inside the screening machine 1. The limiting sliding block 402 is slidably matched with the limiting sliding groove 102, and the screening frame 4 is slidably installed inside the screening machine 1. Furthermore, by using a reciprocating mechanism, the screening frame 4 can be driven to move back and forth, thereby generating vibration. At the same time, the screening frame 4 is in an inclined state with the front end downward, and the auxiliary vibration will cause the rice falling on the screening frame 4 to slowly slide forward. The rice will be screened when passing through the screen 401. The qualified rice will move forward and be discharged through the discharge port 103, while the smaller rice will fall onto the lower screening frame 4 for further screening. The baffle 504 is slidably installed between the two vertical frames 5, and there is a certain gap between the lower surface of the baffle 504 and the upper surface of the screening frame 4, so that the rice can only slide through the gap, avoiding the thick accumulation of rice together, resulting in the ineffective screening of the upper-layer rice by the screen 401. The thinner the rice thickness, the better the screening effect, but the corresponding screening speed will be slower. By adjusting the height of the baffle 504, the thickness of the rice accumulated on the screening frame 4 can be controlled, so as to select and control the screening speed and quality according to the actual situation.

[0024] Among them, in order to achieve the purpose of generating vibration by the reciprocating movement of the screening frame 4, the following technical solution is adopted for this device: an installation groove is opened on one side of the screening machine 1, a collection box 101 is slidably installed in the installation groove, a guide plate 104 is fixedly connected on the front surface of the screening machine 1 and below the discharge port 103, a driving motor 3 is fixedly connected to the inner wall of the screening machine 1 through a motor seat, a rotating disk 301 is fixedly connected to the output end of the driving motor 3, an eccentric shaft 302 is rotatably installed at a position near the edge on the rotating disk 301, the upper end of the eccentric shaft 302 is fixedly connected to the rotating disk 301, a bearing seat is rotatably connected to the rotating disk 301 through a shaft, and the bearing seat is fixedly connected to the inner wall of the screening machine 1. A connecting square frame 403 is fixedly connected to the back of the screening frame 4, and the connecting square frame 403 is matched with the eccentric shaft 302.

[0025] The limiting chute 102 is located at the lowermost end of the screening machine 1. When the crushed materials screened by the lowermost screening box 4 fall, they will be collected inside the limiting chute 102. Starting the driving motor 3 can drive the rotating disk 301 to rotate. The rotation of the rotating disk 301 will drive the eccentric shaft 302 to rotate. The eccentric shaft 302 vertically penetrates through the inside of the connecting square frame 403. The connecting square frame 403 and the eccentric shaft 302 cooperate with each other. Therefore, when the eccentric shaft 302 rotates eccentrically, it will drive the connecting square frame 403 to move back and forth. The movement of the connecting square frame 403 will drive the screening box 4 to move, and further make the screening box 4 move back and forth to generate vibration to screen rice. There are three guide plates 104, and their opening directions are all different, which is convenient for collecting the rice discharged by the guide plates 104 at the same time.

[0026] Among them, in order to achieve the purpose of adjusting the height of the screening box 4, the following technical solution is adopted by this device: A threaded rod 502 is rotatably installed in one side connecting chute 501. An adjusting motor 503 is fixedly connected above the connecting chute 501. The output end of the adjusting motor 503 is fixedly connected to the threaded rod 502. A threaded through hole 505 is opened at a position near one side edge inside the baffle 504. The threaded through hole 505 is in threaded cooperation with the threaded rod 502. A guiding inclined plate 6 is fixedly connected inside the screening machine 1 and between the two screening boxes 4.

[0027] By starting the baffle 504, it can drive the adjusting motor 503 to rotate. The adjusting motor 503 is in threaded cooperation with the threaded through hole 505. Therefore, when the adjusting motor 503 rotates, it will drive the baffle 504 to move, and further adjust the height of the baffle 504. The guiding inclined plate 6 is located between the two screening boxes 4, and its rear end is inclined downward, which can collect the rice screened and falling from the upper sieve mesh 401, and make the rice slide to the rear end of the lower-layer screening box 4. First, it can increase the screening length of the rice on the screening box 4 and improve the screening effect of the lower screening box 4. Second, it conveys the rice to the front end of the lower-layer screening box 4, and the rice will pass through the baffle 504 again to control the thickness of the rice above the screening box 4.

[0028] The working principle and usage process of the present utility model: When in use, the rice to be screened needs to be added to the inside of the feeding hopper 2. The rice slowly falls onto the screening box 4 inside the screening machine 1. Start the driving motor 3 to drive the eccentric shaft 302 to rotate eccentrically. The eccentric shaft 302 will drive the three screening boxes 4 to move back and forth synchronously, thereby generating vibration. At the same time, the screening box 4 is in an inclined state with the front end downward, and the auxiliary vibration will make the rice falling on the screening box 4 slowly slide forward. The rice will be screened when passing through the sieve mesh 401. The qualified rice will move forward and be discharged through the discharge port 103, while the smaller rice will fall to the lower-layer screening box 4 for further screening. The screened rice will be discharged through the discharge port 103 onto the guide plate 104 and discharged.

[0029] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage rice selection tooling, including a screening machine (1), a feeding hopper (2) is fixedly connected above the screening machine (1), and a triangular dispersion baffle post (201) is fixedly connected inside the feeding hopper (2), characterized in that: On both inner walls of the screening machine (1), limiting sliding grooves (102) are provided. Three screening frames (4) are slidably installed in the screening machine (1). The three screening frames (4) are equidistantly distributed up and down and are inclined downward at the front end. On both sides of the screening frame (4), limiting sliding blocks (402) are fixedly connected. The limiting sliding blocks (402) are slidably matched with the limiting sliding grooves (102). On the front surface of the screening machine (1), three discharge ports (103) are provided. The discharge ports (103) are matched with the screening frames (4). A screen mesh (401) is embedded and installed in the screening frame (4). On the upper surface of the screening frame (4), vertical frames (5) are fixedly connected symmetrically left and right. On the opposite surfaces of the two vertical frames (5), connecting sliding grooves (501) are provided. A baffle plate (504) is slidably installed in the connecting sliding grooves (501).

2. The multi-stage rice selection tooling according to claim 1, wherein: On one side of the screening machine (1), an installation groove is provided. A collection box (101) is slidably installed in the installation groove. A guide plate (104) is fixedly connected to the front surface of the screening machine (1) and is located below the discharge port (103).

3. A multi-stage rice selection tooling according to claim 1, characterized in that: A driving motor (3) is fixedly connected to the inner wall of the screening machine (1) through a motor base. The output end of the driving motor (3) is fixedly connected with a rotating disk (301). An eccentric shaft (302) is rotatably installed at a position near the edge on the upper surface of the rotating disk (301). The upper end of the eccentric shaft (302) is fixedly connected with a rotating disk (301). A bearing seat is rotatably connected to the upper surface of the rotating disk (301) through a shaft. The bearing seat is fixedly connected to the inner wall of the screening machine (1).

4. A multi-stage rice selection tooling according to claim 1, characterized in that: A connecting square frame (403) is fixedly connected to the rear surface of the screening frame (4). The connecting square frame (403) is matched with the eccentric shaft (302).

5. A multi-stage rice selection tooling according to claim 1, characterized in that: A threaded rod (502) is rotatably installed in one of the connecting sliding grooves (501). An adjusting motor (503) is fixedly connected to the upper surface of the connecting sliding groove (501). The output end of the adjusting motor (503) is fixedly connected with the threaded rod (502). A threaded through hole (505) is provided at a position near one side edge in the baffle plate (504). The threaded through hole (505) is in threaded cooperation with the threaded rod (502).

6. The multi-stage rice selection tooling according to claim 1, characterized in that: A guiding inclined plate (6) is fixedly connected in the screening machine (1) and is located between the two screening frames (4).

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