Impurity removal vibrating screen for rice processing

Abstract

The utility model relates to the technical field of rice processing, in particular to a rice processing impurity removal vibrating screen which comprises a first-stage impurity removal device, a second-stage impurity removal device and a third-stage impurity removal device. The primary impurity removal device comprises a filter cartridge and a stirring device; the stirring device is arranged in the filter drum and is used for stirring rice in the filter drum; a primary filter hole is formed in the filter cartridge; the size of the primary filtering holes is larger than that of rice; the rice enters the second-stage impurity removal device through the first-stage filtering holes; the secondary impurity removal device comprises a rice sieve and a vibration motor; the vibration motor is fixedly connected with the rice sieve; secondary filtering holes are formed in the rice sieve; the size of the secondary filtering holes is smaller than that of rice; the rice sieve is obliquely arranged relative to the horizontal direction; the third-stage impurity removal device comprises an exhaust fan; the exhaust fan is arranged at the position corresponding to the lower end of the rice sieve. Compared with the prior art, after the rice is subjected to the first-stage impurity removal treatment, the second-stage impurity removal treatment and the third-stage impurity removal treatment, impurity residues are avoided, and the quality of the finished rice is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a vibrating screen for impurity removal in rice processing. Background Technique

[0002] Rice contains a large number of nutrients required by the human body and is the main food in the southern regions of China. During the rice processing process, a vibrating screen is needed to screen and clean the rice. The vibrating screen in the prior art uses the principle of vibration excitation to make the rice continuously vibrate on the filter screen to remove the impurities remaining in the rice.

[0003] A Chinese patent discloses a vibrating screen [Application No.: CN202021803024.8, Publication (Publication) No.: CN212883480U], which includes a vibrating screen body, characterized in that: a discharge groove is opened on one end face of the vibrating screen body, a connecting block is arranged on the lower surface of the vibrating screen body, a return spring is fixedly installed on the lower surface of the connecting block, the number of the return springs is several, and several of the return springs are fixedly connected with a spring seat in the form of a rectangular array, a fixing block is fixedly installed on the lower surface of the spring seat, a fixing rod is fixedly installed on the lower surface of the fixing block, a fixing column is fixedly installed on the lower surface of the fixing rod, and a base is fixedly installed on the lower surface of the fixing column.

[0004] The technical solution of this patent is a single-layer vibrating screen, which filters the impurities in the rice through a filter plate to achieve the effect of removing impurities. However, since the pore size of the filter plate is fixed, it can only remove impurities smaller than the size of the rice singly. Rice is made from paddy through multiple processing procedures, and rice will contain impurities such as rice husks, gravel, and soil during the processing. The sizes of these impurities are inconsistent, and there will still be a small amount of impurities remaining in the rice after being cleaned by the single-layer vibrating screen, resulting in incomplete cleaning and affecting the quality of the finished rice. Summary of the Utility Model

[0005] Aiming at the technical problems of the prior art, the utility model provides a vibrating screen for impurity removal in rice processing.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions: A rice processing impurity removal vibrating screen, characterized in that it includes: a primary impurity removal device, a secondary impurity removal device, and a tertiary impurity removal device; The primary impurity removal device includes: a filter cylinder and a stirring device; The stirring device is arranged inside the filter cylinder and is used to stir the rice inside the filter cylinder; The filter cylinder is provided with primary filtering holes; The size of the primary filtering holes is larger than the size of the rice; The rice enters the secondary impurity removal device through the primary filtering holes; The secondary impurity removal device includes: a rice sieve and a vibration motor; The vibration motor is fixedly connected to the rice sieve; The rice sieve is provided with secondary filtering holes; The size of the secondary filtering holes is smaller than the size of the rice; The rice sieve is arranged obliquely relative to the horizontal direction; The tertiary impurity removal device includes: an exhaust fan; The exhaust fan is arranged at the corresponding position of the lower end of the rice sieve.

[0007] First, the rice is introduced into the filter cylinder of the primary impurity removal device, and then the stirring device stirs the rice inside the filter cylinder to prompt the rice to quickly pass through the primary filtering holes. Impurities larger than the size of the rice will be blocked by the primary filtering holes into the filter cylinder to achieve the primary impurity removal effect; Then, the rice sieve in the secondary impurity removal device collects the rice passing through the primary filtering holes. Under the influence of gravity, the rice will slide from the higher end to the lower end of the rice sieve. During the sliding process of the rice, the vibration motor drives the rice sieve to vibrate, and impurities smaller than the size of the rice are screened out from the rice sieve through the secondary filtering holes to achieve the secondary impurity removal effect; During the process of the rice sliding out of the rice sieve at the lower end of the rice sieve, the exhaust fan in the tertiary impurity removal device blows out the lighter impurities such as residual chaff in the rice to achieve the tertiary impurity removal effect; Compared with the prior art, the rice after primary impurity removal, secondary impurity removal, and tertiary impurity removal treatments can thoroughly remove various sizes of impurities in the rice, avoid the residue of impurities, and ensure the quality of the finished rice.

[0008] Furthermore, a heating pipe is arranged inside the side wall of the filter cylinder; The heating pipes are evenly distributed along the circumferential direction of the filter cylinder.

[0009] Furthermore, the stirring device includes: a transmission shaft, a spiral blade, and a material distributing plate; The transmission shaft is rotatably arranged inside the filter cylinder; The spiral blade is fixedly connected to the transmission shaft; The material distributing plate is arranged on the spiral blade along the axial direction of the transmission shaft; The material distributing plate is fixedly connected to the spiral blade; There is a gap between the material distributing plate and the transmission shaft.

[0010] Furthermore, the stirring device further includes: a motor; The output shaft of the motor is in transmission connection with the transmission shaft.

[0011] Furthermore, the primary impurity removal device further includes: a guiding plate; The guiding plate is arranged between the filter cylinder and the secondary impurity removal device; The guiding plate is arranged obliquely relative to the horizontal direction.

[0012] Furthermore, a waste material groove is arranged on the side of the rice sieve close to the ground; The waste material groove is fixedly connected to the rice sieve.

[0013] Further, a flow disturbing block is provided inside the rice sieve; a gap is provided between adjacent flow disturbing blocks.

[0014] Further, a baffle is provided inside the rice sieve; the baffle is rotatably connected to the rice sieve.

[0015] Further, it further includes: a box body; a cavity is provided inside the box body; the primary impurity removal device, the secondary impurity removal device, and the tertiary impurity removal device are respectively arranged inside the cavity.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] After the rice undergoes primary impurity removal treatment, secondary impurity removal treatment, and tertiary impurity removal treatment, various impurities of different sizes in the rice can be effectively removed, avoiding the residue of impurities and ensuring the quality of the finished rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 : Three-dimensional view of the overall mechanism

[0019] Figure 2 : Cross-sectional view of the box body

[0020] Figure 3 : Schematic diagram of the rice sieve

[0021] Figure 4 : Cross-sectional view of the filter cartridge

[0022] Figure 5 : Schematic diagram of the stirring device

[0023] In the figure: 1. Box body; 11. Collection box; 111. Discharge port; 12. Ventilation hole; 2. Primary impurity removal device; 21. Filter cartridge; 211. Primary filter hole; 212. Heating pipe; 213. Discharge pipe; 214. Feed pipe; 22. Stirring device; 221. Transmission shaft; 222. Spiral blade; 223. Pushing plate; 224. Motor; 23. Deflector; 24. Primary impurity box; 3. Secondary impurity removal device; 31. Rice sieve; 311. Secondary filter hole; 312. Flow disturbing block; 313. Baffle; 314. Waste chute; 32. Vibration motor; 33. Secondary impurity box; 34. Support; 341. Spring; 4. Tertiary impurity removal device; 41. Exhaust fan; 42. Tertiary impurity box; 421. Tertiary filter hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following are specific embodiments of the utility model in combination with the drawings, and the technical solutions of the utility model will be further described, but the utility model is not limited to these embodiments.

[0025] To solve the above technical problems, the present application provides a rice processing impurity removal vibrating screen, comprising: a box body 1, a primary impurity removal device 2, a secondary impurity removal device 3, and a tertiary impurity removal device 4; the interior of the box body 1 is a cavity, and the primary impurity removal device 2, the secondary impurity removal device 3, and the tertiary impurity removal device 4 are respectively arranged in the cavity.

[0026] The primary impurity removal device 2 includes: a filter cylinder 21, a stirring device 22, a deflector 23, and a primary impurity box 24; the filter cylinder 21 is provided with primary filter holes 211, the size of the primary filter holes 211 is larger than the size of rice, a heating pipe 212 is arranged inside the side wall of the filter cylinder 21, and the heating pipes 212 are evenly distributed along the circumferential direction of the filter cylinder 21; one end of the filter cylinder 21 is provided with a feed pipe 214, the feed pipe 214 is communicated with the filter cylinder 21, and the feed pipe 214 penetrates through the box body 1; the end of the filter cylinder 21 away from the feed pipe 214 is provided with a discharge pipe 213, one end of the discharge pipe 213 is communicated with the filter cylinder 21, and the other end is communicated with the primary impurity box 24, and the primary impurity box 24 is fixedly connected to the box body 1; the stirring device 22 is arranged inside the filter cylinder 21 for stirring the rice inside the filter cylinder 21; the stirring device 22 includes: a transmission shaft 221, a spiral blade 222, a material distributing plate 223, and a motor 224; the transmission shaft 221 is rotatably arranged inside the filter cylinder 21, and the spiral blade 222 is fixedly connected to the transmission shaft 221; the material distributing plate 223 is arranged on the spiral blade 222 along the axial direction of the transmission shaft 221, and the material distributing plate 223 is fixedly connected to the spiral blade 222; there is a gap between the material distributing plate 223 and the transmission shaft 221; the output shaft of the motor 224 is in transmission connection with the transmission shaft 221; the motor 224 is fixedly connected to the box body 1; the deflector 23 is arranged between the filter cylinder 21 and the secondary impurity removal device 3, the deflector 23 is inclined relative to the horizontal direction, and there is a gap between the lower end of the deflector 23 and the inner wall of the box body 1.

[0027] The secondary impurity removal device 3 includes: a rice sieve 31, a vibration motor 32, a secondary impurity box 33, and a bracket 34; the vibration motor 32 is fixedly connected to the rice sieve 31; the rice sieve 31 is provided with secondary filter holes 311, the size of the secondary filter holes 311 is smaller than the size of rice; the rice sieve 31 is provided with turbulence blocks 312, the turbulence blocks 312 are staggered and distributed inside the rice sieve 31, and there is a gap between adjacent turbulence blocks 312; a waste material trough 314 is arranged on the side of the rice sieve 31 close to the ground, and the waste material trough 314 is fixedly connected to the rice sieve 31; a baffle 313 is arranged inside the rice sieve 31, and the baffle 313 is rotatably connected to the rice sieve 31; the rice sieve 31 is inclined relative to the horizontal direction; the higher end of the rice sieve 31 corresponds to the lower end of the deflector 23; one end of the bracket 34 is connected to the box body 1, and the other end is connected to the rice sieve 31, and a spring 341 is arranged at one end of the bracket 34, and the spring 341 is fixedly connected to the bracket; the secondary impurity box 33 is arranged at the corresponding position of the lower end of the waste material trough 314.

[0028] The three - stage impurity removal device 4 includes: an exhaust fan 41 and a three - stage impurity box 42; the exhaust fan 41 is arranged at the corresponding position of the lower end of the rice sieve 31; the three - stage impurity box 42 is fixedly connected outside the box body 1, the three - stage impurity box 42 is communicated with the box body 1, and the three - stage impurity box 42 is arranged at the corresponding position of the exhaust fan 41; one end of the three - stage impurity box 42 close to the ground is provided with three - stage filter holes 421, and the three - stage filter holes 421 are used to discharge the air in the three - stage impurity box 42.

[0029] A collection box 11 is arranged inside the box body 1, and the collection box 11 is used to collect the rice discharged by the rice sieve 31; the collection box 11 is provided with a discharge port 111, and the discharge port 111 penetrates through the side wall of the box body 1; the box body 1 is provided with a ventilation hole 12, and the ventilation hole 12 is communicated with the cavity.

[0030] Please refer to Figures 1 to 5 , in the specific implementation stage, the rice enters the filter cylinder 21 in the first - stage impurity removal device 2 through the feed pipe 214. The motor 224 in the stirring device 22 drives the spiral blade 222 and the feeding plate 223 to rotate in the filter cylinder 21 through the transmission shaft 221. The feeding plate 223 continuously stirs the rice in the filter cylinder 21, prompting the rice to quickly pass through the first - stage filter holes 211. The impurities larger than the size of the rice will remain in the filter cylinder 21 to achieve the first - stage impurity removal effect. At the same time, the spiral blade 222 continuously pushes the impurities remaining in the filter cylinder 21 and enters the first - stage impurity box 24 through the discharge pipe 213 to clean the impurities in the filter cylinder 21. The heating pipe 212 also heats the rice in the filter cylinder 21 to remove the moisture in the rice and accelerate the separation of impurities such as husks and soil adhering to the rice. The rice passing through the first - stage filter holes 211 will fall on the deflector 23 and slide to the lower end of the deflector 23 and enter the second - stage impurity removal device 3.

[0031] After the rice enters the secondary impurity removal device 3, the rice sieve 31 collects the rice that slides down from the diversion plate 23. Under the influence of gravity, the rice slides from the higher end to the lower end of the rice sieve 31. During the sliding process, the vibration motor 32 drives the rice sieve 31 to vibrate, and the impurities smaller than the size of the rice in the rice are filtered through the secondary filter holes 311 to achieve the secondary impurity removal effect. The impurities smaller than the size of the rice fall into the waste material trough 314 through the secondary filter holes 311 and slide towards the lower end of the waste material trough 314, and finally fall into the secondary impurity box 33. When the rice sieve 31 vibrates, the springs 341 on the support 34 are used to enhance the vibration effect of the rice sieve 31, further enhancing the secondary impurity removal effect; at the same time, the springs 341 can also absorb the impact load generated when the rice sieve 31 vibrates, preventing the support 34 from transmitting excessive load to the box body 1 and ensuring the stability of the overall structure. After the rice enters the rice sieve 31, the flow rate of the rice during sliding is controlled by rotating the baffle 313 to ensure that the rice can be fully subjected to secondary impurity removal treatment. The rice after secondary impurity removal will continue to slide towards the area of the spoiler block 312, and the spoiler block 312 enables the rice to be evenly dispersed and slide down from the lower end of the rice sieve 31 into the tertiary impurity removal device 4.

[0032] The exhaust fan 41 in the tertiary impurity removal device 4 blows the lighter impurities such as rice husks remaining in the rice into the tertiary impurity box 42 to achieve the tertiary impurity removal effect. When the exhaust fan 41 operates, the outside air enters the cavity from the ventilation hole 12. Driven by the exhaust fan 41, the air will be discharged from the tertiary filter holes 421 to form a stable air flow in the cavity, preventing the impurities in the tertiary impurity box 42 from flowing back into the cavity and contaminating the rice.

[0033] The rice after tertiary impurity removal treatment will fall into the collection box 11 and be discharged from the cavity through the discharge port 111. Compared with the prior art, the rice after primary impurity removal, secondary impurity removal, and tertiary impurity removal treatments can thoroughly remove various sizes of impurities in the rice, avoid the residue of impurities, and ensure the quality of the finished rice.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A rice processing impurity removal vibrating screen, characterized in that: include: A primary impurity removal device (2), a secondary impurity removal device (3), and a tertiary impurity removal device (4); The primary impurity removal device (2) comprises: a filter cartridge (21) and a stirring device (22); The stirring device (22) is arranged in the filter cartridge (21) and is used to stir the rice in the filter cartridge (21); The filter cartridge (21) is provided with a primary filter hole (211); a heating tube (212) is provided in the side wall of the filter cartridge (21), and the heating tube (212) is evenly distributed along the circumference of the filter cartridge (21); The size of the primary filtering hole (211) is larger than the size of rice; The rice enters the secondary impurity removal device (3) through the primary filtering hole (211); The secondary impurity removal device (3) comprises a rice screen (31) and a vibration motor (32); The vibration motor (32) is fixedly connected to the rice sieve (31); The rice sieve (31) is provided with a secondary filtering hole (311); The size of the secondary filtering hole (311) is smaller than the size of the rice; The rice sieve (31) is arranged obliquely relative to the horizontal direction; The three-stage impurity removal device (4) comprises: an exhaust fan (41); The exhaust fan (41) is arranged at a position corresponding to the lower end of the rice sieve (31).

2. A rice processing impurity removal vibrating screen according to claim 1, characterized in that: The stirring device (22) comprises: a transmission shaft (221), a spiral blade (222), and a material-diverting plate (223); The transmission shaft (221) is rotatably disposed in the filter cartridge (21); The spiral blade (222) is fixedly connected to the transmission shaft (221); The material-shifting plate (223) is arranged on the spiral blade (222) along the axial direction of the transmission shaft (221); The material-shifting plate (223) is fixedly connected to the spiral blade (222); A gap is provided between the material shifting plate (223) and the transmission shaft (221).

3. A rice processing impurity removal vibrating screen according to claim 2, characterized in that: The stirring device (22) further comprises: a motor (224); The output shaft of the motor (224) is drivingly connected to the transmission shaft (221).

4. A rice processing impurity removal vibrating screen according to claim 1, characterized in that: The primary impurity removal device (2) further comprises: a guide plate (23); The guide plate (23) is arranged between the filter cartridge (21) and the secondary impurity removal device (3); The guide plate (23) is arranged to be inclined relative to the horizontal direction; A waste material trough (314) is provided on one side of the rice sieve (31) close to the ground; The waste trough (314) is fixedly connected to the rice sieve (31).

5. A rice processing impurity removal vibrating screen according to claim 1, characterized in that: The rice sieve (31) is provided with a spoiler block (312); Gaps are provided between adjacent spoiler blocks (312).

6. A rice processing impurity removal vibrating screen according to claim 1, characterized in that: The rice sieve (31) is provided with a baffle (313); The baffle (313) is rotatably connected to the rice sieve (31).

7. A rice processing impurity removal vibrating screen according to any one of claims 1 to 6, characterized in that: It also includes: a box body (1); The box body (1) is provided with a cavity inside; The primary impurity removal device (2), the secondary impurity removal device (3), and the tertiary impurity removal device (4) are respectively arranged in the cavity.

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