Multi-stage screening machine for Chinese chestnuts

Abstract

The utility model discloses a multi-stage screening machine for Chinese chestnuts, which belongs to the technical field of Chinese chestnut processing and comprises a screening box, a feeding mechanism and a multi-stage screening mechanism are arranged on the screening box, the feeding mechanism comprises a feeding hopper communicated and mounted above the screening box, a rotating shaft is rotatably mounted in the feeding hopper, and the multi-stage screening mechanism is mounted on the rotating shaft. A plurality of feeding push plates are fixedly mounted on the outer surface of the rotating shaft, the outer surfaces of the feeding push plates are attached to the inner wall of the feeding hopper, and one end of the rotating shaft extends out of the feeding hopper and is fixedly provided with a rotating wheel; by arranging a control rod, the control rod is pulled to be away from the interior of a lock hole during feeding to unlock a rotating wheel, the rotating wheel is driven to rotate through the control rod after unlocking, the rotating wheel drives a rotating shaft to rotate, and the rotating shaft drives a plurality of feeding push plates to move during rotation to achieve the quantitative feeding function of Chinese chestnut materials in the feeding hopper; under the elastic action of the spring, the control rod is driven to be inserted into the lock hole to lock the rotating wheel.

Description

Technical Field

[0001] The utility model belongs to the technical field of chestnut processing, and in particular relates to a chestnut multi-stage screening machine. Background Art

[0002] Chestnut is also known as chestnut, Chinese chestnut, chestnut, and wind-baked chestnut. During processing and production, different individuals of chestnut need to be screened and processed.

[0003] The existing multi-stage screening machine lacks the function of quantitative feeding. During use, batches of chestnuts are usually poured directly into the device for screening, which can easily cause a large load on the device and affect the service life of the device. At the same time, too much chestnut material is easily missed at one time, affecting the accuracy of screening. Utility Model Content

[0004] The utility model aims to provide a multi-stage screening machine for chestnuts to solve the problem that the existing multi-stage screening machine lacks a quantitative feeding function as mentioned in the above background technology. During use, batches of chestnuts are usually poured directly into the device for screening, which easily causes a large load on the device and affects the service life of the device. At the same time, too much chestnut material is easily missed when fed at one time, which affects the accuracy of screening.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chestnut multi-stage screening machine comprises a screening box, the screening box is provided with a loading mechanism and a multi-stage screening mechanism, the loading mechanism comprises an upper hopper connected and installed above the screening box, a rotating shaft is rotatably installed in the upper hopper, a plurality of loading push plates are fixedly installed on the outer surface of the rotating shaft, the outer surface of the loading push plates is in contact with the inner wall of the upper hopper, one end of the rotating shaft extends to the outside of the upper hopper and is fixedly installed with a rotating wheel, a locking mechanism is provided on the rotating wheel, the multi-stage screening mechanism comprises a plurality of mounting blocks fixedly installed in the screening box, the same sieve plate is rotatably installed between two mounting blocks on the same horizontal plane, the sieve holes on the upper sieve plate are larger than the mesh holes on the lower sieve plate, a screening driving mechanism for driving the sieve plate to move is provided on the screening box, a guide block is fixedly installed on the lower surface of the inner wall of the screening box, and a lower hopper is connected and installed at the position of the side of the screening box facing the two sieve plates and the guide block.

[0006] By adopting the above scheme, a feeding mechanism is set up, and during use, the rotating wheel drives the rotating shaft to rotate. When the rotating shaft rotates, it drives several feeding push plates to move to realize the quantitative feeding function of the chestnut material inside the feeding hopper. At the same time, the rotating wheel can be locked by the locking mechanism after loading, which effectively avoids the automatic operation of the feeding mechanism. By setting up a driving screening mechanism, the two sieve plates are driven to move during use. When the sieve plates move, multi-stage screening of chestnuts can be realized through sieve holes of different sizes.

[0007] In the above solution, it should be noted that the motor is electrically connected to the external power supply.

[0008] As a preferred embodiment, the front side of the screening box is provided with an opening, a box door is installed in the opening by means of a lock, and an observation window is provided on the box door.

[0009] By adopting the above scheme, by providing a box door, it is convenient to maintain the inside of the screening box during use, and the screening process can be observed through the observation window during the screening process.

[0010] As a preferred embodiment, the locking mechanism includes a control rod slidably mounted on the rotating wheel, a plurality of lock holes for the control rod are opened on the upper hopper, a limit block is fixedly mounted on the outer surface of the control rod, a spring is sleeved on the outer surface of the control rod, and both ends of the spring are respectively fixedly connected to the opposite surfaces of the rotating wheel and the limit block.

[0011] By adopting the above scheme, a control rod is set. When loading, the control rod is pulled away from the lock hole to unlock the rotating wheel. After unlocking, the control rod drives the rotating wheel to rotate to load the chestnut material quantitatively. After loading, the control rod is released, and the control rod is inserted into the lock hole under the elastic action of the spring to lock the rotating wheel.

[0012] As a preferred embodiment, the screening drive mechanism includes a mounting seat fixedly mounted on the screening box, a motor is fixedly mounted on the upper surface of the mounting seat, a rotating rod is fixedly mounted on the outer surface of the output shaft of the motor, a transmission shaft is rotatably mounted on the other end of the rotating rod, a sliding rod is slidably mounted on the screening box, a transmission block is fixedly mounted on the end of the sliding rod, a transmission hole for the transmission shaft is opened on the transmission block, two connecting blocks are fixedly mounted on the outer surface of the sliding rod, a connecting plate is hingedly mounted on the connecting block, and the connecting plate is hinged to the corresponding screen plate.

[0013] By adopting the above scheme, a motor is set up. When the motor starts, the rotating rod is used to drive the transmission shaft to rotate. When the transmission shaft rotates, the transmission hole is used to drive the transmission block to reciprocate up and down. During the movement, the transmission block drives the sliding rod and the two connecting blocks to move synchronously. When the connecting block moves, the connecting plate is used to drive the screen plate to move to realize the screening function of chestnut materials. At the same time, the screening efficiency is improved during the movement of the screen plate, and the blockage of the screen holes on the screen plate is avoided.

[0014] As a preferred embodiment, two L-shaped guide rods are relatively fixedly installed on the inner wall of the screening box, and the two connecting blocks are slidably installed on the outer surfaces of the two L-shaped guide rods.

[0015] By adopting the above solution, an L-shaped guide rod is provided to achieve the limiting and guiding function of the two connecting blocks during movement, thereby ensuring the stability of the structural operation.

[0016] As a preferred embodiment, partitions are fixedly installed in the two lower hoppers located at the top, and a plurality of leakage holes are opened on the partitions, and the leakage holes are consistent in size with the mesh holes on the corresponding sieve plates.

[0017] By adopting the above scheme, a partition plate and a plurality of leakage holes are provided to achieve secondary screening when the lower hopper discharges the material, thereby avoiding the occurrence of leakage.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The chestnut multi-stage screening machine is provided with a control rod. When feeding, the control rod is pulled away from the lock hole to unlock the rotating wheel. After unlocking, the control rod drives the rotating wheel to rotate, and the rotating wheel drives the rotating shaft to rotate. When the rotating shaft rotates, it drives a plurality of feeding push plates to move to realize the quantitative feeding function of the chestnut material in the feeding hopper. At the same time, after feeding, the control rod is released, and the elastic action of the spring drives the control rod to be inserted into the lock hole to lock the rotating wheel.

[0020] The chestnut multi-stage screening machine is provided with a motor. When the motor is started, the rotating rod is used to rotate to drive the transmission shaft to rotate. When the transmission shaft rotates, the transmission hole is used to drive the transmission block to reciprocate up and down. During the movement, the transmission block drives the sliding rod and two connecting blocks to move synchronously. When the connecting block moves, the connecting plate is used to drive the sieve plate to move to achieve the function of screening chestnut materials. At the same time, the screening efficiency is improved during the movement of the sieve plate, and the blockage of the sieve holes on the sieve plate is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the cross section of the upper hopper of the utility model;

[0023] Figure 3 For this utility model Figure 2 The structural diagram at A in the middle;

[0024] Figure 4 It is a structural schematic diagram of the cross section of the screening box of the utility model.

[0025] In the figure: 1. screening box; 2. upper hopper; 3. rotating shaft; 4. upper push plate; 5. rotating wheel; 6. mounting block; 7. sieve plate; 8. guide block; 9. lower hopper; 10. box door; 11. observation window; 12. control lever; 13. limit block; 14. spring; 15. motor; 16. rotating rod; 17. transmission shaft; 18. sliding rod; 19. transmission block; 20. connecting block; 21. connecting plate; 22. L-shaped guide rod; 23. partition. DETAILED DESCRIPTION

[0026] See also Figure 1-4 The utility model provides a chestnut multi-stage screening machine, including a screening box 1, on which a feeding mechanism and a multi-stage screening mechanism are arranged. An opening is opened on the front side of the screening box 1, in which a box door 10 is installed by locking, and an observation window 11 is arranged on the box door 10. By setting the box door 10, it is convenient to maintain the inside of the screening box 1 during use, and the screening process can be observed through the observation window 11 during the screening process.

[0027] The feeding mechanism includes a feeding hopper 2 which is connected and installed above the screening box 1. A rotating shaft 3 is rotatably installed in the feeding hopper 2. A plurality of feeding push plates 4 are fixedly installed on the outer surface of the rotating shaft 3. The outer surface of the feeding push plates 4 is in contact with the inner wall of the feeding hopper 2. One end of the rotating shaft 3 extends to the outside of the feeding hopper 2 and is fixedly installed with a rotating wheel 5. A locking mechanism is provided on the rotating wheel 5.

[0028] The locking mechanism includes a control rod 12 slidably mounted on the rotating wheel 5, and a plurality of lock holes for the control rod 12 are opened on the loading hopper 2. A limit block 13 is fixedly mounted on the outer surface of the control rod 12, and a spring 14 is sleeved on the outer surface of the control rod 12. The two ends of the spring 14 are respectively fixedly connected to the opposite surfaces of the rotating wheel 5 and the limit block 13. By setting the control rod 12, the control rod 12 is pulled away from the lock hole to unlock the rotating wheel 5 during loading. After unlocking, the rotating wheel 5 is driven to rotate by the control rod 12 to quantitatively load the chestnut material. After loading, the control rod 12 is released, and the control rod 12 is driven to be inserted into the lock hole under the elastic action of the spring 14 to lock the rotating wheel 5.

[0029] The multi-stage screening mechanism includes a plurality of mounting blocks 6 fixedly mounted in the screening box 1, a same screen plate 7 is rotatably mounted between two mounting blocks 6 on the same horizontal plane, the screen holes on the upper screen plate 7 are larger than the mesh holes on the lower screen plate 7, and a screening drive mechanism for driving the screen plate 7 to move is provided on the screening box 1.

[0030] The screening drive mechanism includes a mounting seat fixedly mounted on the screening box 1, a motor 15 is fixedly mounted on the upper surface of the mounting seat, a rotating rod 16 is fixedly mounted on the outer surface of the output shaft of the motor 15, a transmission shaft 17 is rotatably mounted on the other end of the rotating rod 16, a sliding rod 18 is slidably mounted on the screening box 1, a transmission block 19 is fixedly mounted on the end of the sliding rod 18, a transmission hole for the transmission shaft 17 is opened on the transmission block 19, two connecting blocks 20 are fixedly mounted on the outer surface of the sliding rod 18, a connecting plate 21 is hingedly mounted on the connecting block 20, and the connecting plate 21 is hingedly connected to the corresponding sieve plate 7, two L-shaped guide rods 22 are relatively fixedly mounted on the inner wall of the screening box 1, and the two connecting blocks 20 are slidably mounted on the outer surfaces of the two L-shaped guide rods 22.

[0031] By setting the motor 15, when the motor 15 is started, the rotating rod 16 is used to rotate to drive the transmission shaft 17 to rotate. When the transmission shaft 17 rotates, the transmission hole is used to drive the transmission block 19 to reciprocate up and down. During the movement, the transmission block 19 drives the slide bar 18 and the two connecting blocks 20 to move synchronously. When the connecting block 20 moves, the connecting plate 21 is used to drive the sieve plate 7 to move to achieve the function of screening chestnut materials. At the same time, the screening efficiency is improved during the movement of the sieve plate 7, and the clogging of the sieve holes on the sieve plate 7 is avoided. By setting the L-shaped guide rod 22, the limiting and guiding functions of the two connecting blocks 20 during movement are achieved, thereby ensuring the stability of the structural operation.

[0032] A guide block 8 is fixedly installed on the lower surface of the inner wall of the screening box 1, and a lower hopper 9 is connected and installed at the position of the two sieve plates 7 and the guide block 8 on the side of the screening box 1. A partition 23 is fixedly installed in the two upper lower hoppers 9, and a plurality of leakage holes are opened on the partition 23. The leakage holes are consistent in size with the mesh holes on the corresponding sieve plates 7. By setting the partition 23 and the plurality of leakage holes, secondary screening is achieved when the lower hopper 9 discharges the material to avoid leakage.

[0033] Working principle: when in use, first start the motor 15, then pour the chestnut material into the upper hopper 2, pull the control rod 12 away from the lock hole to unlock the wheel 5 when screening and feeding, and drive the wheel 5 to rotate through the control rod 12 after unlocking, and the wheel 5 drives the rotating shaft 3 to rotate. When the rotating shaft 3 rotates, it drives several feeding push plates 4 to move to quantitatively feed the chestnut material inside the upper hopper 2, and releases the control rod 12 after feeding. Under the elastic action of the spring 14, the control rod 12 is driven to insert into the lock hole to lock the wheel 5. When the motor 15 is started, the rotating rod 16 is used to rotate to drive the transmission shaft 17 to rotate. When the transmission shaft 17 rotates, the transmission hole is used to drive the transmission block 19 to reciprocate up and down. The transmission block 19 drives the slide bar 18 and the two connecting blocks 20 to move synchronously during the movement. When the connecting block 20 moves, the connecting plate 21 drives the sieve plate 7 to reciprocate to screen the chestnuts. The screened material is screened for the second time through the partition 23 in the lower hopper 9 to complete the unloading.

Claims

1. A chestnut multi-stage screening machine, characterized in that: The invention comprises a screening box (1), wherein the screening box (1) is provided with a feeding mechanism and a multi-stage screening mechanism, wherein the feeding mechanism comprises a feeding hopper (2) which is connected and installed above the screening box (1), wherein a rotating shaft (3) is rotatably installed in the feeding hopper (2), wherein a plurality of feeding push plates (4) are fixedly installed on the outer surface of the rotating shaft (3), wherein the outer surface of the feeding push plates (4) is in contact with the inner wall of the feeding hopper (2), wherein one end of the rotating shaft (3) extends to the outside of the feeding hopper (2) and is fixedly provided with a rotating wheel (5), wherein the rotating wheel (5) is provided with a locking mechanism, and wherein the multi-stage screening mechanism comprises a feeding hopper (2) which is connected to the feeding hopper (2) and a multi-stage screening mechanism. The mechanism comprises a plurality of mounting blocks (6) fixedly mounted in a screening box (1); a same sieve plate (7) is rotatably mounted between two mounting blocks (6) on the same horizontal plane; the sieve holes on the upper sieve plate (7) are larger than the mesh holes on the lower sieve plate (7); a screening drive mechanism for driving the sieve plate (7) to move is arranged on the screening box (1); a guide block (8) is fixedly mounted on the lower surface of the inner wall of the screening box (1); and a lower hopper (9) is mounted on the side of the screening box (1) at positions facing the two sieve plates (7) and the guide block (8) in communication with each other.

2. A chestnut multi-stage screening machine according to claim 1, characterized in that: The front side of the screening box (1) is provided with an opening, a box door (10) is installed in the opening by means of a lock, and an observation window (11) is provided on the box door (10).

3. A chestnut multi-stage screening machine according to claim 1, characterized in that: The locking mechanism comprises a control rod (12) slidably mounted on the rotating wheel (5); a plurality of locking holes for the control rod (12) are provided on the upper hopper (2); a limit block (13) is fixedly mounted on the outer surface of the control rod (12); a spring (14) is sleeved on the outer surface of the control rod (12); two ends of the spring (14) are respectively fixedly connected to the opposite surfaces of the rotating wheel (5) and the limit block (13).

4. A chestnut multi-stage screening machine according to claim 1, characterized in that: The screening drive mechanism comprises a mounting seat fixedly mounted on the screening box (1), a motor (15) being fixedly mounted on the upper surface of the mounting seat, a rotating rod (16) being fixedly mounted on the outer surface of the output shaft of the motor (15), a transmission shaft (17) being rotatably mounted on the other end of the rotating rod (16), a sliding rod (18) being slidably mounted on the screening box (1), a transmission block (19) being fixedly mounted on the end of the sliding rod (18), a transmission hole for use by the transmission shaft (17) being provided on the transmission block (19), two connecting blocks (20) being fixedly mounted on the outer surface of the sliding rod (18), a connecting plate (21) being hingedly mounted on the connecting block (20), and the connecting plate (21) being hingedly connected to the corresponding sieve plate (7).

5. A chestnut multi-stage screening machine according to claim 4, characterized in that: Two L-shaped guide rods (22) are relatively fixedly mounted on the inner wall of the screening box (1), and the two connecting blocks (20) are slidably mounted on the outer surfaces of the two L-shaped guide rods (22).

6. The chestnut multi-stage screening machine according to claim 1, characterized in that: A partition plate (23) is fixedly installed in each of the two lower hoppers (9) located at the top, and a plurality of leakage holes are opened on the partition plate (23), and the size of the leakage holes is consistent with the mesh holes on the corresponding sieve plate (7).

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