Screening device for rice processing

Abstract

The utility model discloses a screening device for rice processing, which comprises a screening box body, a feeding pipe is arranged at the top of the screening box body, a feeding control structure is arranged at the feeding pipe, a first-stage screen, a second-stage screen and a guide slope are sequentially arranged in the screening box body from top to bottom in an inclined manner, and vibration motors are arranged on the first-stage screen and the second-stage screen. An air blowing pipe is arranged at the top end of one side of the screening box body, an air blower is arranged on the air blowing pipe, a dust collecting structure matched with the air blowing pipe is arranged on the other side wall of the screening box body, discharging pipes matched with the first-stage screen, the second-stage screen and the guide slope are arranged on the side wall of the screening box body, and centrifugal impellers are rotationally installed in the discharging pipes through bearings; a centrifugal impeller is arranged in the screening box body, a first motor is arranged in cooperation with the centrifugal impeller, at least two sets of installation frames are arranged on the outer side of the screening box body, belt type conveying structures are arranged on the installation frames, dust, chippings, pebbles and the like in rice can be classified and screened, and the screening effect in the rice processing process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, and more specifically, to a screening device for rice processing. Background Art

[0002] During the rice processing, the rice particles will carry a lot of dust and shell debris, as well as some small stones and other particles. The existing rice processing screening device mainly screens the particle size of the rice through a screen structure, and can remove the dust particles during screening. However, the removal effect of the dust particles is poor. After screening, some broken dust structures will still exist in the rice.

[0003] Moreover, the simple screening method using a sieve is not convenient for screening stones having the same diameter as the rice grains, and the stones cannot be well screened out from the rice grains. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the utility model provides a screening device for rice processing to solve the technical problem mentioned in the background technology that the screening device for rice processing in the prior art has a poor effect of removing dust, shell debris, stones and the like during the process of screening rice.

[0006] (II) Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A screening device for rice processing comprises a screening box, a feed pipe is arranged on the top of the screening box, a feed control structure is arranged at the feed pipe, a primary screen, a secondary screen and a guide slope are arranged in an inclined manner up and down in sequence inside the screening box, a vibration motor is arranged on the primary screen and the secondary screen, a blow pipe is arranged on the top of one side of the screening box, a blower is arranged on the blow pipe, and a dust collecting structure is arranged on the other side wall in coordination with the blow pipe, a discharge pipe is arranged on the side wall of the screening box in coordination with the primary screen, the secondary screen and the guide slope, a centrifugal impeller is rotatably installed in the discharge pipe through a bearing, and a first motor is arranged in coordination with the centrifugal impeller, at least two sets of mounting frames are arranged on the outside of the screening box, and a belt conveying structure is arranged on the mounting frame.

[0009] The utility model is further configured that the belt conveyor structure includes a conveyor roller rotatably mounted on a mounting frame, and a conveyor belt is mounted through the conveyor roller. A conveying motor is arranged on the mounting frame to cooperate with the conveyor roller, so as to facilitate the separate transportation of the screened stones and rice.

[0010] The utility model is further configured such that the feed control structure includes a feed shaft rotatably installed in a feed pipe through a bearing, and a feed motor is provided in conjunction with the feed shaft, and feed control blades are provided on the feed shaft. Feed control of the feed pipe can be achieved through the configuration of the feed motor, the feed shaft and the feed control blades.

[0011] The utility model is further configured such that the dust collecting structure includes an air outlet duct connected to a screening box, an air inlet end of the air outlet duct is provided with a protective filter, and a rear end is connected to a dust collecting box, so as to collect debris particles such as dust shells blown out.

[0012] The utility model is further configured that a guide plate is arranged between the primary screen and the secondary screen in an oppositely inclined manner, and the guide plate is arranged to improve the flow guiding effect of the rice between the primary screen and the secondary screen.

[0013] The utility model is further configured that a one-way valve is arranged on the air outlet pipe to prevent the air flow from flowing back on the air outlet pipe.

[0014] The utility model is further configured such that a feeding hopper is provided at the top end of the feeding pipe, and the feeding convenience can be improved by providing the feeding hopper.

[0015] The utility model is further configured that the bottom end of the screening box is provided with supporting legs, and the bottom ends of the supporting legs are provided with fixed feet to achieve overall stable support.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a screening device for rice processing, which has the following

[0018] Beneficial effects:

[0019] 1. The utility model includes a screening box, a feed pipe is arranged on the top of the screening box, a feed control structure is arranged at the feed pipe, a primary screen, a secondary screen and a guide slope are arranged in an inclined manner up and down in the screening box, and a vibration motor is arranged on the primary screen and the secondary screen. Through the cooperation of the primary screen and the secondary screen, the screening of rice with different particle sizes can be achieved, thereby improving the screening effect of rice.

[0020] 2. The utility model is provided with a blowing pipe at the top end of one side of the screening box, a hair dryer is provided on the blowing pipe, and a dust collecting structure is provided on the other side wall to cooperate with the blowing pipe, wherein the dust collecting structure includes an air outlet pipe connected to the screening box, a protective filter is provided at the air inlet end of the air outlet pipe, and a dust collecting box is connected at the tail end. In this way, in the process that the rice enters the screening box from the feed pipe and falls on the primary screen, the hair dryer is started, and under the action of the hair dryer, the air flow can be blown toward the fallen rice through the blowing pipe, so that the dust in the rice and the shell debris can be blown out and enter the air outlet pipe, and transported to the dust collecting box through the air outlet pipe for collection. In this process, the provision of the protective filter can intercept rice particles and prevent the rice from being blown into the air outlet pipe.

[0021] 3. The utility model is provided with a discharge pipe on the side wall of the screening box in cooperation with the primary screen, the secondary screen and the guide slope. A centrifugal impeller is rotatably installed in the discharge pipe through a bearing, and a first motor is provided in cooperation with the centrifugal impeller. The materials screened by the primary screen and the secondary screen will be classified on the primary screen, the secondary screen and the guide slope respectively, and discharged outwardly through the discharge pipe. The first motor is started and the rotation of the centrifugal impeller can be controlled by the first motor, so that the materials discharged from the discharge pipe are centrifugally discharged outwardly. Since the weights of the stone particles of the same particle size carried in the rice are different, stratification will occur during discharge, thereby realizing the screening of stone fragments in the rice.

[0022] 4. The utility model is provided with at least two groups of mounting frames on the outer side of the screening box, and a belt conveying structure is provided on the mounting frame. The belt conveying structure includes a conveying roller rotatably mounted on the mounting frame, and a conveying belt is installed through the conveying roller. A conveying motor is provided on the mounting frame to cooperate with the conveying roller. The rice and gravel and other debris after screening will fall on different conveying belts when discharged from the discharge pipe under the action of the centrifugal impeller. The conveying motor is started, and the conveying roller can be controlled by the conveying motor to drive the conveying belt to move, thereby realizing the separate transportation of the rice and gravel after screening to avoid accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structure of a rice processing screening device in the utility model is shown in FIG. Figure 1 ;

[0024] Figure 2 The overall structure of a rice processing screening device in the utility model is shown in FIG. Figure 2 ;

[0025] Figure 3 It is a schematic cross-sectional view of the overall structure of the utility model;

[0026] Figure 4This is a schematic cross-sectional view of the internal structure of the feed pipe in the utility model;

[0027] Figure 5 It is a schematic diagram of the exploded connection structure between the mounting frame and the belt conveyor structure in the utility model.

[0028] In the figure: 1. screening box; 2. feed pipe; 3. primary screen; 4. secondary screen; 5. guide slope; 6. vibration motor; 7. blow pipe; 8. blower; 9. discharge pipe; 10. centrifugal impeller; 11. first motor; 12. mounting frame; 13. belt conveyor structure; 14. conveyor roller; 15. conveyor belt; 16. conveyor motor; 17. feed shaft; 18. feed motor; 19. feed control blade; 20. outlet pipe; 21. protective filter; 22. dust box; 23. guide plate; 24. one-way valve; 25. feed hopper; 26. support leg; 27. fixed foot. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0032] See also Figure 1-5 A screening device for rice processing comprises a screening box 1, a feed pipe 2 is arranged on the top of the screening box 1, a feed control structure is arranged at the feed pipe 2, a primary screen 3, a secondary screen 4 and a guide slope 5 are arranged in an inclined manner up and down in the screening box 1, and a vibration motor 6 is arranged on the primary screen 3 and the secondary screen 4. Through the cooperation of the primary screen 3 and the secondary screen 4, rice with different particle sizes can be screened, thereby improving the screening effect of rice.

[0033] The utility model is provided with a blowing pipe 7 at the top end of one side of the screening box 1, and a blower 8 is arranged on the blowing pipe 7, and a dust collecting structure is arranged on the other side wall to cooperate with the blowing pipe 7, wherein the dust collecting structure includes an air outlet pipe 20 connected to the screening box 1, and a protective filter screen 21 is arranged at the air inlet end of the air outlet pipe 20, and a dust collecting box 22 is connected to the tail end. In this way, in the process that the rice enters the screening box 1 from the feeding pipe 2 and lands on the primary screen 3, the blower 8 is started. Under the action of the blower 8, the air flow can be blown toward the landed rice through the blowing pipe 7, so that the dust in the rice and the shell debris can be blown out and enter the air outlet pipe 20, and transported to the dust collecting box 22 through the air outlet pipe 20 for collection. In this process, the provision of the protective filter screen 21 can intercept rice particles and prevent the rice from being blown to the air outlet pipe 20.

[0034] In the utility model, a discharge pipe 9 is arranged on the side wall of the screening box 1 in cooperation with the primary screen 3, the secondary screen 4 and the guide slope 5. A centrifugal impeller 10 is rotatably installed in the discharge pipe 9 through a bearing, and a first motor 11 is arranged in cooperation with the centrifugal impeller 10. The materials screened by the primary screen 3 and the secondary screen 4 will be classified on the primary screen 3, the secondary screen 4 and the guide slope 5 respectively, and discharged outwardly through the discharge pipe 9. The first motor 11 is started, and the centrifugal impeller 10 can be controlled to rotate by the first motor 11, so that the materials discharged from the discharge pipe 9 are centrifugally discharged outwardly. Since the weights of the stone particles with the same particle size carried in the rice are different, stratification will be generated during discharge, thereby realizing the screening of stone debris in the rice.

[0035] The utility model is provided with at least two groups of mounting frames 12 on the outer side of the screening box 1, and a belt conveying structure 13 is provided on the mounting frame 12. The belt conveying structure 13 includes a conveying roller 14 rotatably mounted on the mounting frame 12, and a conveying belt 15 is installed through the conveying roller 14. A conveying motor 16 is provided on the mounting frame 12 to cooperate with the conveying roller 14. The rice and gravel debris after screening will fall on different conveying belts 15 when discharged from the discharge pipe 9 under the action of the centrifugal impeller 10. The conveying motor 16 is started, and the conveying roller 14 can be controlled by the conveying motor 16 to drive the conveying belt 15 to move, thereby realizing the separate transportation of the rice and gravel after screening to avoid accumulation.

[0036] See also Figure 1-Figure 5 As an implementation of the feed control structure: the feed control structure includes a feed shaft 17 rotatably installed in the feed pipe 2 through a bearing, and a feed motor 18 is arranged in conjunction with the feed shaft 17, and a feed control blade 19 is arranged on the feed shaft 17.

[0037] Specifically, the feed motor 18 is started, and the feed shaft 17 can be controlled to rotate by the feed motor 18, and the feed control blade 19 can be controlled to rotate by the feed shaft 17, so that the feeding uniformity of the rice when it is transported from the feed pipe 2 to the screening box 1 can be achieved, thereby improving the screening effect of the rice.

[0038] See also Figure 1-Figure 5 As an implementation of the screening box 1 , a guide plate 23 is arranged between the primary screen 3 and the secondary screen 4 in an oppositely inclined manner.

[0039] Specifically, the guide plate 23 can be provided to guide the rice that falls through the primary screen 3 and transport it to the higher end of the secondary screen 4 .

[0040] See also Figure 1-Figure 5 As an implementation of the air outlet pipe 20 , a one-way valve 24 is provided on the air outlet pipe 20 .

[0041] Specifically, the one-way valve 24 can be provided to prevent the airflow in the air outlet pipe 20 from flowing backwards.

[0042] See also Figure 1-Figure 5 As an implementation of the feed pipe 2 : a feed hopper 25 is provided at the top of the feed pipe 2 .

[0043] Specifically, the feeding effect of the feeding pipe 2 can be improved by providing the feeding hopper 25 .

[0044] See also Figure 1-Figure 5 As an implementation of the screening box 1 , a supporting leg 26 is provided at the bottom end of the screening box 1 , and a fixing foot 27 is provided at the bottom end of the supporting leg 26 .

[0045] Specifically, overall stable support can be achieved through the arrangement of the supporting legs 26 and the fixing feet 27 .

[0046] In summary, when the overall equipment is in use:

[0047] The rice material to be screened is conveyed into the feed pipe 2 through the feed hopper 25, and the feed motor 18 is started. The feed shaft 17 can be controlled to rotate by the feed motor 18, and the feed control blade 19 can be controlled to rotate by the feed shaft 17, so that the rice can be evenly conveyed to the inside of the screening box 1 and landed on the primary screen 3;

[0048] In this process, the blower 8 is started. Under the action of the blower 8, the airflow can be blown toward the falling rice through the blow pipe 7, so that the dust in the rice and the shell debris can be blown out and enter the air outlet pipe 20, and then transported to the dust collecting box 22 through the air outlet pipe 20 for collection. In this process, the setting of the protective filter 21 can intercept the rice particles and prevent the rice from being blown into the air outlet pipe 20.

[0049] The vibration motor 6 is started to drive the primary screen 3 to vibrate, thereby improving the screening effect of the primary screen 3 on rice, intercepting rice larger than the mesh diameter of the primary screen 3, and discharging it through the corresponding discharge pipe 9;

[0050] Afterwards, the rice falling downward will be guided to the top of the secondary screen 4 under the action of the guide plate 23, and the secondary screen 4 will be driven to vibrate by the vibration motor 6, so as to further screen the rice, and the intercepted rice will be discharged outward through the corresponding discharge pipe 9;

[0051] The rice at the bottom layer falls on the guide slope 5 and is discharged outward through the corresponding discharge pipe 9;

[0052] The first motor 11 is started, and the centrifugal impeller 10 can be controlled to rotate by the first motor 11, so that the material discharged from the discharge pipe 9 is centrifugally discharged outwardly. Since the stone particles with the same particle size carried by the rice have different weights, they will be stratified during discharge, thereby achieving screening of stone fragments in the rice;

[0053] The rice and gravel debris after screening will fall on different conveyor belts 15 when discharged from the discharge pipe 9 under the action of the centrifugal impeller 10, and the conveying motor 16 can be started. The conveying motor 16 can control the conveying roller 14 to drive the conveying belt 15 to move, thereby realizing the separate transportation of the rice and gravel after screening, avoiding accumulation, and facilitating the transportation of the screened rice, etc.

[0054] In all the schemes mentioned above, the connection between two parts can be selected according to the actual situation by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents;

[0055] In all the schemes mentioned above, the operation of electrical components is controlled by a controller. Since the devices matched with the controller are commonly used devices, their control principles and line connections are all existing well-known and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A rice processing screening device, comprising a screening box (1), wherein a feed pipe (2) is arranged on the top of the screening box (1), wherein: A feed control structure is arranged at the feed pipe (2); a primary screen (3), a secondary screen (4) and a guide slope (5) are arranged in an inclined manner up and down in sequence inside the screening box (1); a vibration motor (6) is arranged on each of the primary screen (3) and the secondary screen (4); a blow pipe (7) is arranged at the top of one side of the screening box (1); a blower (8) is arranged on the blow pipe (7); and a dust collecting structure is arranged on the other side wall in coordination with the blow pipe (7); a discharge pipe (9) is arranged on the side wall of the screening box (1) in coordination with the primary screen (3), the secondary screen (4) and the guide slope (5); a centrifugal impeller (10) is rotatably mounted in the discharge pipe (9) via a bearing, and a first motor (11) is arranged in coordination with the centrifugal impeller (10); and at least two groups of mounting frames (12) are arranged on the outside of the screening box (1); and a belt conveying structure (13) is arranged on the mounting frame (12).

2. A rice processing screening device according to claim 1, characterized in that: The belt conveying structure (13) comprises a conveying roller (14) rotatably mounted on a mounting frame (12), and a conveying belt (15) is mounted via the conveying roller (14); a conveying motor (16) is arranged on the mounting frame (12) in coordination with the conveying roller (14).

3. A rice processing screening device according to claim 1, characterized in that: The feed control structure comprises a feed shaft (17) rotatably mounted in a feed pipe (2) via a bearing, a feed motor (18) is arranged in conjunction with the feed shaft (17), and a feed control blade (19) is arranged on the feed shaft (17).

4. A rice processing screening device according to claim 1, characterized in that: The dust collecting structure comprises an air outlet pipe (20) connected to the screening box body (1); the air inlet end of the air outlet pipe (20) is provided with a protective filter screen (21), and the rear end is connected to a dust collecting box (22).

5. A rice processing screening device according to any one of claims 1 to 4, characterized in that: A guide plate (23) is arranged between the primary screen (3) and the secondary screen (4) in an oppositely inclined manner.

6. A rice processing screening device according to claim 4, characterized in that: The air outlet pipe (20) is provided with a one-way valve (24).

7. A rice processing screening device according to claim 1, characterized in that: A feeding hopper (25) is provided at the top end of the feeding pipe (2).

8. The rice processing screening device according to claim 1, characterized in that: The bottom end of the screening box (1) is provided with a supporting leg (26), and the bottom end of the supporting leg (26) is provided with a fixing foot (27).

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