Screen cleaning device for vertical rice mill

Abstract

The utility model discloses a screen cleaning device of vertical rice mill, including annular seat, annular groove, annular cover, blow pipe, a plurality of blow nozzles, rotary drive mechanism and air inlet, the upper end of annular seat is equipped with annular groove, the annular cover of the slot of closed annular groove can be rotatable and is equipped with on annular seat, be equipped with the blow pipe of annular groove intercommunication on the annular cover, be equipped with blow nozzle on the blow pipe, be equipped with the air inlet of annular groove intercommunication on the annular seat, rotary drive mechanism drives annular cover rotation, compared with prior art, can use conveniently, reduce artificial work load.

Description

Technical Field

[0001] This utility model relates to the technical field of vertical rice milling machines, and in particular to the technical field of a screen cleaning device for a vertical rice milling machine. Background Technology

[0002] The working principle of a vertical rice mill is as follows: Brown rice, processed by a rice huller, is pushed into the bottom of the milling chamber by the feeding device of the vertical rice mill and conveyed between the milling roller assembly and the screen assembly. As the power unit drives the milling roller assembly to rotate, the brown rice moves upward in a spiral shape along the surface of the milling roller assembly (the surface of the milling roller assembly has a spiral channel). Friction occurs between the milling roller assembly and the brown rice, between the screen assembly and the brown rice, and between the brown rice grains, which makes the brown rice white and discharged from the rice outlet pipe. At the same time, the airflow generated by the fan blows from top to bottom into the hollow shaft linked to the power unit (the milling roller assembly is installed on the hollow shaft), flows along the hollow shaft, the milling roller assembly, and the screen assembly, cools the brown rice and blows out the bran. In conjunction with the external bran suction device connected to the bran suction pipe of the vertical rice mill, the bran powder is quickly discharged from the screen holes of the screen assembly and sucked away by the external bran suction device.

[0003] A vertical rice milling machine with application (patent) number CN202510138215.8 has a brush assembly on the side of the rice milling box away from the rice outlet pipe. The brush assembly includes a support bar extending vertically inside the rice milling box and multiple brush bristles on the support bar that remove adhering materials from the parts of the left and right screens not covered by the left support bracket. During the rotation of the rotating seat, the multiple brush bristles remove adhering materials from the parts of the left and right screens not covered by the left and right support brackets. After the maintenance door is removed, the rotating seat can rotate, driving the screen assembly to rotate. The brush bristles can then remove adhering materials from the parts of the left and right screens not covered by the left and right support brackets, thus achieving the function of periodically cleaning adhering materials. However, since manual operation is required for cleaning adhering materials, it is inconvenient to use and increases the workload. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a screen cleaning device for a vertical rice milling machine that is easy to use and reduces manual labor.

[0005] To achieve the above objectives, this utility model proposes a screen cleaning device for a vertical rice milling machine, comprising an annular seat, an annular groove, an annular cover, an air blowing pipe, several air blowing nozzles, a rotary drive mechanism, and an air inlet. The upper end of the annular seat is provided with an annular groove, and the annular cover on the annular seat is rotatably provided with an annular cover that closes the opening of the annular groove. The annular cover is provided with an air blowing pipe communicating with the annular groove, and the air blowing pipe is provided with air blowing nozzles. The annular seat is provided with an air inlet communicating with the annular groove, and the rotary drive mechanism drives the annular cover to rotate.

[0006] Preferably, the annular cover is provided with a plurality of guide wheels located inside the annular seat, and the inner side of the annular seat is provided with guide rails that cooperate with the guide wheels.

[0007] Preferably, the rotary drive mechanism includes a drive motor, a drive gear, and a ring gear. The drive gear is provided on the rotating shaft of the drive motor, and the drive gear meshes with the ring gear provided on the outer side of the ring cover.

[0008] Preferably, the annular cover is provided with two annular sealing bodies located within an annular groove, each annular sealing body being provided with a sealing ring, and the annular groove being provided with an annular sealing groove that corresponds to and cooperates with the sealing ring.

[0009] Preferably, the lower outer side of the annular sealing body is provided with an annular receiving groove that cooperates with the sealing ring, and the inner diameter of the annular receiving groove is larger than the inner diameter of the sealing ring.

[0010] Preferably, the air nozzle includes a connecting tube, the rear end of which is integrally formed with a flat air outlet, the connection between the flat air outlet and the connecting tube is a rearward convex arc shape, the connecting tube is provided with a screwing protrusion, the cross-section of the screwing protrusion is a regular polygon shape, and the front end of the connecting tube is provided with a threaded section that is threaded to the air blowing tube.

[0011] Preferably, the width of the flat air outlet gradually increases from front to back, and the internal height of the flat air outlet gradually decreases from front to back.

[0012] The beneficial effects of this utility model are as follows: The compressed air of this utility model enters the annular groove through the air inlet, and then blows out through the air pipe and air nozzle to clean the screen. The annular cover is driven to rotate by the rotary drive mechanism, and the annular cover drives the air nozzle to rotate around the screen through the air pipe. Compared with the prior art, it is convenient to use and reduces the amount of manual labor.

[0013] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the structure of a screen cleaning device for a vertical rice milling machine according to this utility model; Figure 2 This is a schematic diagram of the air nozzle; Figure 3 This is a side view of the air nozzle.

[0015] In the diagram: 1-ring seat, 2-ring groove, 3-ring cover, 4-air blowing pipe, 5-air blowing nozzle, 6-rotary drive mechanism, 7-air inlet, 8-guide wheel, 9-guide rail, 10-ring sealing body, 11-sealing ring, 12-ring sealing groove, 13-ring receiving groove, 51-connecting pipe, 52-flat air outlet, 53-twisting protrusion, 54-threaded section, 61-drive motor, 62-drive gear, 63-ring gear. Detailed Implementation

[0016] See Figure 1 , Figure 2 and Figure 3 This utility model discloses a screen cleaning device for a vertical rice milling machine, comprising an annular seat 1, an annular groove 2, an annular cover 3, an air blowing pipe 4, several air blowing nozzles 5, a rotary drive mechanism 6, and an air inlet 7. The annular seat 1 has an annular groove 2 at its upper end. The annular cover 3 is rotatably provided on the annular seat 1 to close the opening of the annular groove 2. The annular cover 3 is provided with an air blowing pipe 4 communicating with the annular groove 2. The air blowing pipe 4 is provided with air blowing nozzles 5. The annular seat 1 is provided with an air inlet 7 communicating with the annular groove 2. The rotary drive mechanism 6 drives the annular cover 3 to rotate.

[0017] The annular cover 3 is provided with a plurality of guide wheels 8 located inside the annular seat 1, and the inner side of the annular seat 1 is provided with guide rails 9 that cooperate with the guide wheels 8.

[0018] The rotary drive mechanism 6 includes a drive motor 61, a drive gear 62, and a ring gear 63. The drive gear 62 is provided on the rotating shaft of the drive motor 61, and the drive gear 62 meshes with the ring gear 63 provided on the outer side of the ring cover 3.

[0019] The annular cover 3 is provided with two annular sealing bodies 10 located in the annular groove 2. Each annular sealing body 10 is provided with a sealing ring 11. The annular groove 2 is provided with annular sealing grooves 12 that correspond one-to-one with and cooperate with the sealing rings 11.

[0020] The lower outer side of the annular sealing body 10 is provided with an annular receiving groove 13 that cooperates with the sealing ring 11, and the inner diameter of the annular receiving groove 13 is larger than the inner diameter of the sealing ring 11.

[0021] The air nozzle 5 includes a connecting pipe 51. The rear end of the connecting pipe 51 is integrally formed with a flat air outlet 52. The connection between the flat air outlet 52 and the connecting pipe 51 is a rearward convex arc shape. The connecting pipe 51 is provided with a screwing protrusion 53. The cross-section of the screwing protrusion 53 is a regular polygon shape. The front end of the connecting pipe 51 is provided with a threaded section 54 that is threadedly connected to the air blowing pipe 4.

[0022] The width of the flat air outlet 52 gradually increases from front to back, and the internal height of the flat air outlet 52 gradually decreases from front to back.

[0023] The working process of this utility model: In the operation of the screen cleaning device of the vertical rice milling machine of this utility model, compressed air enters the annular groove 2 through the air inlet 7, and then blows out through the air pipe 4 and the air nozzle 5 to clean the screen. The drive motor 61 drives the annular cover 3 to rotate through the cooperation of the drive gear 62 and the annular gear 63. The annular cover 3 drives the air nozzle 5 to rotate around the screen through the air pipe 4.

[0024] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A screen cleaning device for a vertical rice milling machine, characterized in that: The device includes an annular seat (1), an annular groove (2), an annular cover (3), an air blowing pipe (4), several air blowing nozzles (5), a rotary drive mechanism (6), and an air inlet (7). The annular seat (1) has an annular groove (2) at its upper end. The annular cover (3) on the annular seat (1) is rotatably provided with a groove opening that closes the annular groove (2). The annular cover (3) is provided with an air blowing pipe (4) that communicates with the annular groove (2). The air blowing pipe (4) is provided with an air blowing nozzle (5). The annular seat (1) is provided with an air inlet (7) that communicates with the annular groove (2). The rotary drive mechanism (6) drives the annular cover (3) to rotate.

2. The screen cleaning device for a vertical rice milling machine as described in claim 1, characterized in that: The annular cover (3) is provided with a number of guide wheels (8) located inside the annular seat (1), and the inner side of the annular seat (1) is provided with guide rails (9) that cooperate with the guide wheels (8).

3. The screen cleaning device for a vertical rice milling machine as described in claim 1, characterized in that: The rotary drive mechanism (6) includes a drive motor (61), a drive gear (62) and a ring gear (63). The drive gear (62) is provided on the rotating shaft of the drive motor (61), and the drive gear (62) meshes with the ring gear (63) provided on the outside of the ring cover (3).

4. The screen cleaning device for a vertical rice milling machine as described in claim 1, characterized in that: The annular cover (3) is provided with two annular sealing bodies (10) located in the annular groove (2). Each annular sealing body (10) is provided with a sealing ring (11). The annular groove (2) is provided with an annular sealing groove (12) that corresponds to and cooperates with the sealing ring (11).

5. The screen cleaning device for a vertical rice milling machine as described in claim 4, characterized in that: The lower outer side of the annular sealing body (10) is provided with an annular receiving groove (13) that cooperates with the sealing ring (11), and the inner diameter of the annular receiving groove (13) is larger than the inner diameter of the sealing ring (11).

6. The screen cleaning device for a vertical rice milling machine as described in claim 1, characterized in that: The air nozzle (5) includes a connecting tube (51), and the rear end of the connecting tube (51) is integrally formed with a flat air outlet (52). The connection between the flat air outlet (52) and the connecting tube (51) is a rearward convex arc shape. The connecting tube (51) is provided with a screwing protrusion (53), and the cross-section of the screwing protrusion (53) is a regular polygon shape. The front end of the connecting tube (51) is provided with a threaded section (54) that is threadedly connected to the air blowing tube (4).

7. The screen cleaning device for a vertical rice milling machine as described in claim 6, characterized in that: The width of the flat air outlet (52) gradually increases from front to back, and the internal height of the flat air outlet (52) gradually decreases from front to back.

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