Vibration anti-blocking structure and rice screening machine thereof

Abstract

The utility model relates to the technical field of rice processing, and discloses a vibration anti-blocking structure and a rice screening machine thereof.The vibration anti-blocking structure comprises a screening machine body, a feeding port used for feeding is formed in the top of the screening machine body, and a first collecting box used for collecting rice is arranged at the bottom of the screening machine body; a second collecting box used for collecting impurities is arranged on one side of the outer wall of the screening machine body. A sieve plate assembly; a cleaning assembly; and a driving assembly. Through the cleaning assembly, impurities at the top of the sieve plate can be cleaned into the second collecting box to be collected through scraping of a scraping plate and movement and autorotation of a cleaning plate along with the scraping plate, cleanliness of the top of the second collecting box is kept, and the situation that due to the fact that the impurities are retained at the top of the sieve plate, rice is difficult to screen through sieve holes, and the screening efficiency is affected is avoided; and the cleaning plate enters and exits the screen holes to dredge the screen holes, so that the screen holes are prevented from being blocked, and the screening efficiency is further influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rice processing technical field especially, relates to a vibration anti -blocking structure and rice screening machine thereof. BACKGROUND

[0002] The rice screening machine is a device for removing stones and impurities in rice, and currently, there is also a technology of removing impurities in rice by using a specific gravity stone removing machine, which is a kind of impurity removing equipment that separates mineral matter from granular material (rice, brown rice, rice, wheat, etc.) by using the difference in density and suspension speed of the granular material and the mineral matter (mainly stones, etc.), and by means of mechanical wind power and a screen surface moving in a certain trajectory.

[0003] The existing screening machine has a large amount of impurities retained on the top of the screen during use after screening, which is accumulated at the screen holes, affecting the efficiency of rice passing through the screen holes and the screening efficiency, and the rice is irregular in shape, which is easily blocked in the screen holes when passing through the screen holes, further affecting the screening efficiency of the rice.

[0004] Therefore, we propose a vibration anti-blocking structure and rice screening machine. INVENTION CONTENTS

[0005] The utility model mainly solves the technical problem of low screening efficiency, and provides a vibration anti-blocking structure and rice screening machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme, a vibration anti-blocking structure and rice screening machine, comprising:

[0007] The screening machine body is provided with a feed inlet for feeding at the top, a first collecting box for collecting rice at the bottom, and a second collecting box for collecting impurities on one side of the outer wall of the screening machine body;

[0008] The screen plate assembly is arranged on the inner wall of the screening machine body, and the screen plate assembly includes a screen plate, which is arranged on the inner wall of the screening machine body in an inclined manner, a plurality of screen holes are arranged on the screen plate in a matrix arrangement, and a vibration motor is arranged at the bottom of the screen plate for vibration;

[0009] The cleaning assembly is arranged on the top of the screen plate, and the cleaning assembly includes a scraper, a dredging rod for dredging the screen holes and a cleaning plate for cleaning the top of the screen plate;

[0010] The driving assembly is arranged at both ends of the top of the screen plate, and the driving assembly includes a fixed plate, a limiting sliding block, a lead screw and a transmission gear and gear strip for driving rotation.

[0011] Further, the fixed plate is fixedly connected to the outer wall of the top of the sieve plate, two fixed plates are provided with a limiting sliding groove on the opposite side, a limiting sliding block is slidably connected to the inner wall of the limiting sliding groove, and a lead screw is rotatably connected to the inner wall of the limiting sliding groove through a motor, a threaded hole is formed in the limiting sliding block, and the lead screw is threadedly connected to the inner wall of the threaded hole.

[0012] Further, the fixed plate is fixedly connected to the outer wall of the top of the sieve plate, two fixed plates are provided with a limiting sliding groove on the opposite side, a limiting sliding block is slidably connected to the inner wall of the limiting sliding groove, and a lead screw is rotatably connected to the inner wall of the limiting sliding groove through a motor, a threaded hole is formed in the limiting sliding block, and the lead screw is threadedly connected to the inner wall of the threaded hole.

[0013] Further, a sliding hole is formed in the bottom of the scraper at the position of the sieve hole axis, a rotating rod is rotatably connected to the sliding hole axis position, a second bevel gear meshing with the first bevel gear is fixedly connected to the top axial position of the rotating rod, a rectangular sliding groove is formed in the inner wall of the rotating rod, a sliding block is slidably connected to the inner wall of the rectangular sliding groove, a return spring is fixedly connected to the top of the sliding block, and the top of the return spring is fixedly connected to the top inner wall of the rectangular sliding groove.

[0014] Further, the dredging rod is fixedly connected to the bottom end position of the sliding block, the dredging rod is a rectangular arc-shaped circular truncated cone block at both ends of the cross section, and the cleaning plate is fixedly connected to the bottom end position of the rotating rod.

[0015] Further, a plurality of dust suction holes arranged in a matrix are formed in the bottom of the scraper, the dust suction holes are communicated with the inner wall of the scraper, and a connecting plate is fixedly connected to the bottom of the scraper, a rotating groove is formed in the connecting plate, and a ball is rotatably connected to the inner wall of the rotating groove.

[0016] Further, the outer wall of the transmission shaft is fixedly connected with a rotating disc, an annular rotating groove is formed in the rotating disc, and the ball is rotatably connected to the inner wall of the rotating groove.

[0017] Further, the scraper is provided with a second scraping groove in a concave shape near one side of the second collecting box, a first scraping groove and a guide groove are formed in the outer wall of the other side of the scraper in communication, the guide groove is communicated with the second scraping groove, the first scraping groove is in a concave shape, and the guide groove is in a convex shape.

[0018] Beneficial effects

[0019] The utility model provides a kind of vibration anti-blocking structure and rice screening machine thereof.There is following beneficial effect:

[0020] (1), the vibration anti-blocking structure and its rice screening machine, through the setting cleaning assembly, that is, through the scraping and cleaning of the scraper, the impurities on the top of the screen plate are cleaned into the second collecting box, the top of the second collecting box is kept clean, the impurities are prevented from staying on the top of the screen plate, the rice is difficult to pass through the screen hole for screening, and the screening efficiency is affected, and the cleaning plate enters and exits the screen hole, the screen hole is dredged, and the screening efficiency is further affected.

[0021] (2), the vibration anti-blocking structure and its rice screening machine, through the setting connecting plate and the ball, the dust in the rice can be attracted by static electricity, the rice is cleaned, and a large amount of dust in the rice is prevented from affecting subsequent processing of the rice.

[0022] (3), the vibration anti-blocking structure and its rice screening machine, the pressure is improved, the scraping effect is improved, and the impurities are prevented from moving away from the second collecting box end, affecting the impurity removal. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a front view of the utility model;

[0024] Figure 2 It is a screen plate view of the utility model;

[0025] Figure 3 It is the A part of the utility model Figure 2 enlarged view;

[0026] Figure 4 It is the B part of the utility model Figure 2 enlarged view;

[0027] Figure 5 It is the detail view of the scraper in the second embodiment of the utility model.

[0028] Legend: 1, screening machine body; 2, feed inlet; 3, screen plate; 4, screen hole; 5, vibration motor; 6, first collecting box; 7, second collecting box; 8, scraper; 9, fixed plate; 10, limit sliding block; 11, screw rod; 12, transmission shaft; 13, transmission gear; 14, gear strip; 15, rotating disc; 16, connecting plate; 17, ball; 18, dust suction hole; 19, first bevel gear; 20, second bevel gear; 21, rotating rod; 22, return spring; 23, sliding block; 24, dredging rod; 25, cleaning plate; 26, first scraping groove; 27, guide groove; 28, second scraping groove. DETAILED DESCRIPTION

[0029] Embodiment one: a vibration anti-blocking structure and its rice screening machine, as shown in Figure 1 , Figure 2 and Figure 3 , including

[0030] The screening machine body 1 is provided with a feeding port 2 at the top for feeding, a first collecting box 6 at the bottom for collecting rice, and a second collecting box 7 on one side of the outer wall for collecting impurities, which is in communication with the inner wall of the screening machine body 1.

[0031] The screen assembly is arranged on the inner wall of the screening machine body 1 and includes a screen 3 arranged in an inclined manner on the inner wall of the screening machine body 1. A plurality of screen holes 4 are arranged in a matrix on the screen 3. A vibration motor 5 is arranged at the bottom of the screen 3. One end of the screen 3 is rotatably connected to the inner wall on one side of the screening machine body 1. An arc-shaped sliding groove is arranged on the inner wall on the other side of the screening machine body 1. The other end of the screen 3 is slidably connected to the inner wall of the arc-shaped sliding groove.

[0032] The cleaning assembly is arranged on the top of the screen 3 and includes a scraper 8, a dredging rod 24 for dredging the screen holes 4, and a cleaning plate 25 for cleaning the top of the screen 3.

[0033] The drive assembly is arranged at the top of the screen 3 and includes a fixed plate 9, a limiting sliding block 10, a lead screw 11, a transmission gear 13, and a gear strip 14 for driving rotation.

[0034] The fixed plate 9 is fixedly connected to the outer wall at both ends of the top of the screen 3. Limiting sliding grooves are arranged on the opposite sides of the two fixed plates 9. The limiting sliding block 10 is slidably connected to the inner wall of the limiting sliding groove. The lead screw 11 is rotatably connected to the inner wall of the limiting sliding groove through a motor. A threaded hole is arranged in the limiting sliding block 10. The lead screw 11 is threadedly connected to the inner wall of the threaded hole. The scraper 8 is fixedly connected to the outer wall on the opposite sides of the two limiting sliding blocks 10.

[0035] The fixed plate 9 is provided with a groove near the limiting sliding groove. First rotating holes are arranged at both ends of the scraper 8, which pass through the limiting sliding block 10 and extend to the inner wall of the groove. A transmission shaft 12 is rotatably connected to the inner wall of the first rotating hole. The transmission gear 13 is fixedly connected to the end face of the transmission shaft 12 in the groove. The gear strip 14 is fixedly connected to the inner wall of the groove. The transmission gear 13 is engaged with the outer wall of the gear strip 14. A plurality of first bevel gears 19 are linearly arranged on the outer wall of the transmission shaft 12.

[0036] As Figure 3 and Figure 4As shown, the bottom of the scraper 8 is provided with a sliding hole at the position of the axis of the screen hole 4, the axis of the sliding hole is rotationally connected with a rotating rod 21, the top of the rotating rod 21 is fixedly connected with a second bevel gear 20 engaged with the first bevel gear 19, the inner wall of the rotating rod 21 is provided with a rectangular sliding groove, the inner wall of the rectangular sliding groove is slidably connected with a sliding block 23, the top of the sliding block 23 is fixedly connected with a return spring 22, and the top of the return spring 22 is fixedly connected to the top inner wall of the rectangular sliding groove.

[0037] The dredging rod 24 is fixedly connected to the bottom end of the sliding block 23, the dredging rod 24 is a rectangular arc-shaped circular truncated cone block at both ends of the cross section, and the cleaning plate 25 is fixedly connected to the bottom end of the rotating rod 21, and the bottom end of the cleaning plate 25 is provided with bristles abutting against the top of the screen plate 3.

[0038] As described above, through the setting of the cleaning assembly, the impurities on the top of the screen plate 3 can be scraped and cleaned to the second collecting box 7 by the scraping of the scraper 8 and the movement and self-rotation of the cleaning plate 25 with the scraper 8, the top of the second collecting box 7 is kept clean, the impurities are prevented from being retained on the top of the screen plate 3, the rice is prevented from being difficult to pass through the screen hole 4 for screening, and the screening efficiency is affected, and the screen hole 4 is dredged by the cleaning plate 25 in and out of the screen hole 4, so that the screen hole 4 is prevented from being blocked and the screening efficiency is further affected.

[0039] As shown in Figure 4 , the bottom of the scraper 8 is provided with a plurality of dust suction holes 18 arranged in a matrix, the dust suction holes 18 are communicated with the inner wall of the scraper 8, and the bottom of the scraper 8 is fixedly connected with a connecting plate 16, the connecting plate 16 is provided with a rotating groove, the rotating groove is rotationally connected with a ball 17, and the ball 17 is made of rubber.

[0040] The outer wall of the transmission shaft 12 is fixedly connected with a rotating disc 15, the rotating disc 15 is provided with an annular rotating groove, the ball 17 is rotationally connected to the inner wall of the rotating groove, and the rotating disc 15 is provided with a fur coating at the wall surface of the rotating groove.

[0041] The ball 17 is made of rubber, the rotating disc 15 is provided with a fur coating at the wall surface of the rotating groove, and static electricity can be generated by the friction between them.

[0042] Through the setting of the connecting plate 16 and the ball 17, the dust in the rice can be attracted by static electricity, the rice is cleaned, and a large amount of dust in the rice is prevented from affecting the subsequent processing of the rice.

[0043] Example two: on the basis of example one, referring to Figure 5 , the scraper 8 is provided with a second scraping groove 28 in a concave shape on the side close to the second collecting box 7, the outer wall of the other side of the scraper 8 is provided with a first scraping groove 26 and a guide groove 27 communicated with each other, the guide groove 27 is communicated with the second scraping groove 28, the first scraping groove 26 is in a concave shape, and the guide groove 27 is in a convex shape.

[0044] Through the first scraping groove 26, the guide groove 27 and the second scraping groove 28, the design of the first scraping groove 26 and the second scraping groove 28 can reduce the contact area between the scraper 8 and the screen plate 3, improve the pressure, improve the scraping effect, and the concave shape of the second scraping groove 28 can retain the impurities scraped off in the second scraping groove 28 when moving to the second collection box 7, facilitating the impurities to be driven to the second collection box 7 for collection, and the design of the guide groove 27 can drive the impurities scraped off to climb along the arc surface of the guide groove 27 to the other side of the scraper 8, avoiding driving the impurities to move away from the end of the second collection box 7, affecting the impurity removal.

[0045] The working principle of the utility model is: when the screening is needed, the raw materials are added into the screening machine body 1 through the feeding port 2 at this time, the raw materials can pass through the screen plate 3 and be screened through the screen hole 4, the raw materials are screened by the vibration motor 5 driving the screen plate 3 to vibrate, and the screened raw materials can fall into the first collection box 6 for collection, at this time, the motor on the lead screw 11 is started, the lead screw 11 is rotated to drive the limiting sliding block 10 connected with the lead screw 11 to slide in the limiting sliding groove, the scraper 8 is moved, the impurities on the screen plate 3 are scraped and driven into the second collection box 7 for collection, at this time, the transmission shaft 12 and the transmission gear 13 in the scraper 8 move synchronously, the transmission gear 13 is engaged with the gear strip 14, the transmission gear 13 can rotate under the drive of the gear strip 14, then the transmission shaft 12 and the first bevel gear 19 thereon drive the second bevel gear 20 engaged with the first bevel gear 19 to rotate, the second bevel gear 20 drives the rotating rod 21 to rotate, then drives the cleaning plate 25 to rotate, the cleaning plate 25 rotates while moving with the scraper 8, and cleans the top of the screen plate 3, and when the dredging rod 24 moves to the axis of the screen hole 4, the dredging rod 24 is driven into the screen hole 4 to dredge the screen hole 4 under the elastic force of the return spring 22, and when the dredging rod 24 moves out of the axis of the screen hole 4, the dredging rod 24 is driven into the rotating rod 21 under the extrusion of the arc surface of the screen hole 4 on the inner wall of the screen hole 4, then can enter and exit the screen hole 4 in turn to dredge the screen hole 4; when the transmission shaft 12 rotates, the rotating disc 15 rotates, the ball 17 rubs in the rotating disc 15, the ball 17 generates static electricity by rubbing to attract dust, and the dust enters the scraper 8 through the dust suction hole 18 for collection.

[0046] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A vibration anti-blocking structure, characterized by, The utility model relates to a rice screening machine, which comprises a screening machine body (1) provided with a feeding port (2) at the top for feeding, a first collecting box (6) at the bottom for collecting rice, and a second collecting box (7) at one side of the outer wall of the screening machine body (1) for collecting impurities. The screening machine body (1) is provided with a screen plate assembly on the inner wall, which comprises a screen plate (3) arranged in an inclined manner on the inner wall of the screening machine body (1), a plurality of screen holes (4) arranged in a matrix on the screen plate (3), and a vibration motor (5) arranged at the bottom of the screen plate (3) for vibration. The screen plate (3) is provided with a cleaning assembly at the top, which comprises a scraper (8), a dredging rod (24) for dredging the screen holes (4), and a cleaning plate (25) for cleaning the top of the screen plate (3). The driving assembly is arranged at both ends of the top of the screen plate (3) and comprises a fixed plate (9), a limiting sliding block (10), a lead screw (11), a transmission gear (13), and a gear strip (14) for driving rotation. The fixed plate (9) is fixedly connected to the outer wall at both ends of the top of the screen plate (3), the opposite sides of the two fixed plates (9) are provided with limiting sliding grooves, the limiting sliding block (10) is slidingly connected to the inner wall of the limiting sliding groove, the lead screw (11) is rotatably connected to the inner wall of the limiting sliding groove through a motor, a threaded hole is formed in the limiting sliding block (10), the lead screw (11) is screwedly connected to the inner wall of the threaded hole, and the two ends of the scraper (8) are fixedly connected to the opposite sides of the two limiting sliding blocks (10).

2. The anti-jamming vibration structure according to claim 1, characterized in that: The fixed plate (9) is provided with a groove near the limiting sliding groove, the two ends of the scraper (8) are provided with first rotating holes, the first rotating holes pass through the limiting sliding block (10) and extend to the inner wall of the groove, a transmission shaft (12) is rotatably connected to the inner wall of the first rotating hole, the transmission gear (13) is fixedly connected to the inner end face of the transmission shaft (12) in the groove, the gear strip (14) is fixedly connected to the inner wall of the groove, the transmission gear (13) is engaged with the outer wall of the gear strip (14), and a plurality of first bevel gears (19) are linearly arranged on the outer wall of the transmission shaft (12).

3. The anti-jamming vibration structure according to claim 1, characterized in that: The bottom of the scraper (8) is provided with a sliding hole at the axial position of the screen hole (4), a rotating rod (21) is rotatably connected to the axial position of the sliding hole, a second bevel gear (20) engaged with the first bevel gear (19) is fixedly connected to the axial position of the top of the rotating rod (21), a rectangular sliding groove is formed in the inner wall of the rotating rod (21), a sliding block (23) is slidingly connected to the inner wall of the rectangular sliding groove, a return spring (22) is fixedly connected to the top of the sliding block (23), and the top of the return spring (22) is fixedly connected to the top inner wall of the rectangular sliding groove.

4. The anti-jamming vibration structure according to claim 3, characterized in that: The dredging rod (24) is fixedly connected to the bottom end of the sliding block (23), the dredging rod (24) is a rectangular arc-shaped circular truncated cone block at both ends of the cross section, and the cleaning plate (25) is fixedly connected to the bottom end of the rotating rod (21).

5. The anti-jamming vibration structure according to claim 4, characterized in that: ​ 6. The anti-jamming vibration structure according to claim 5, characterized in that: The bottom of the scraper (8) is provided with a plurality of dust suction holes (18) arranged in a matrix, the dust suction holes (18) are communicated with the inner wall of the scraper (8), and the bottom of the scraper (8) is fixedly connected with a connecting plate (16), the connecting plate (16) is provided with a rotating groove, and the inner wall of the rotating groove is rotatably connected with a ball (17).

7. The anti-jamming vibration structure according to claim 6, characterized in that: The outer wall of the transmission shaft (12) is fixedly connected with a rotating disc (15), the rotating disc (15) is provided with an annular rotating groove, and the ball (17) is rotatably connected with the inner wall of the rotating groove.

8. The anti-jamming vibration structure according to claim 1, characterized in that: The scraper (8) is provided with a second scraping groove (28) in the shape of a concave on the side close to the second collecting box (7), the outer wall of the other side of the scraper (8) is provided with a first scraping groove (26) and a guide groove (27) communicated with each other, the guide groove (27) is communicated with the second scraping groove (28), the first scraping groove (26) is in the shape of a concave, and the guide groove (27) is in the shape of a convex.

9. A rice screening machine characterized by: The vibration anti-blocking structure comprises the vibration anti-blocking structure according to any one of claims 1-8.

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