A multi-stage dust removal and sorting device for nuts

Abstract

The application discloses a nut and dry fruit multistage dust removal and sorting device and relates to the technical field of dry fruit processing. The nut and dry fruit multistage dust removal and sorting device comprises a rack, the whole rack adopts an inclined structure design, a screen mesh is movably installed in the rack through a buffer assembly, and a vibrating motor is fixedly assembled outside the screen mesh; a cover plate is fixedly installed at the top of the rack, a feeding hopper is fixedly and communicatively arranged on the cover plate, two air blowers are fixedly installed on one side of the feeding hopper, and a dust removal assembly for dry fruit pretreatment is integrally arranged in the feeding hopper. In the rolling conveying process, the dry fruits successively pass through three screening areas with different mesh counts on the screen mesh, multistage sorting of dry fruits with different particle sizes is completed, and size grading and screening of the dry fruits are realized. Dry fruits with different particle sizes after screening fall into corresponding independent cavities below respectively, are finally discharged from the rack through corresponding discharge ports respectively, and grading and discharging are completed.

Description

Technical Field

[0001] This invention relates to the field of dried fruit processing technology, and in particular to a multi-stage dust removal and sorting device for nuts and dried fruits. Background Technology

[0002] In the processing of nuts and dried fruits, dust removal and particle size classification are the core processes for improving the quality of finished dried fruit products. They directly determine the cleanliness and grading regularity of dried fruit products and are an important basic link in the deep processing of dried fruits. Currently, most traditional nut and dried fruit processing equipment on the market adopts a separate operation mode for dust removal and screening, lacking an integrated processing structure, which has obvious defects in actual production applications. Traditional equipment can only perform simple surface blowing dust removal or single-aperture screening of dried fruits, and cannot complete thorough dust removal during the material feeding and conveying process. It also lacks multi-stage grading and screening functions, and the dust removal operation time is uncontrollable. Fine dust and debris adhering to the surface of dried fruits are difficult to remove completely, resulting in poor dust removal effect. At the same time, the screening structure is simple and cannot accurately grade nuts and dried fruits of different particle sizes, which easily leads to problems such as mixed dried fruits of different sizes and low screening accuracy. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a multi-stage dust removal and sorting device for nuts and dried fruits, which can solve the problems in the background art mentioned above.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage dust removal and sorting device for nuts and dried fruits, including a frame, wherein the frame adopts an inclined structure design, a screen is movably installed inside the frame through a buffer component, and a vibration motor is fixedly mounted on the outside of the screen. A cover plate is fixedly installed at the top of the frame, and a feed hopper is fixedly connected to the cover plate. Two blowers are fixedly installed on one side of the feed hopper, and a dust removal component for pre-treatment of dried fruits is integrated inside the feed hopper. The screen is divided into three independent screening zones along the material conveying direction. The mesh size of the screen in the three screening zones increases sequentially, and the discharge end of the feed hopper is directly above the first screening zone with the smallest screen mesh size.

[0005] Preferably, the dust removal component includes guide plates, and multiple sets of guide plates are fixedly installed inside the feed hopper in a staggered and inclined manner to form a tortuous material conveying channel and extend the residence time of dried fruit inside the feed hopper; A collection pipe is fixedly connected to one side of the outer wall of the feed hopper, and a dust collection bag is fixedly installed at the bottom of the collection pipe.

[0006] Preferably, a filter screen is embedded and fixedly installed on one side of the feed hopper where the dust removal air vent is opened. Two rotating shafts are rotatably connected to the inner end face of the filter screen. An installation plate is fixedly fitted on the outer side of the rotating shaft. A brush is fixedly fitted and attached to the side of the installation plate near the filter screen. The brush bristles are in close contact with the surface of the filter screen. The ends of the two rotating shafts furthest from the mounting plate are fixedly connected to the center output shaft of the hair dryer, enabling synchronous linkage between the hair dryer and the rotating shafts.

[0007] Preferably, a gap is reserved between the guide plate and the filter screen to allow the mounting plate and brush to rotate.

[0008] Preferably, casters are fixedly installed at the four bottom corners of the frame.

[0009] Preferably, two partitions are fixedly installed inside the frame, and the two partitions evenly divide the internal cavity of the frame into three independent sealed cavities.

[0010] Preferably, the side wall of the frame is provided with discharge ports at the positions corresponding to the three independent cavities, and the three discharge ports correspond one-to-one with the corresponding independent cavities and are internally connected.

[0011] Preferably, the buffer assembly adopts an elastic buffer structure, specifically a buffer spring. The screen is elastically suspended and installed inside the frame by multiple sets of buffer springs, and the screen and the frame maintain the same tilt angle.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This multi-stage dust removal and sorting device for nuts and dried fruits allows workers to feed the nuts and dried fruits into the equipment through the hopper. As the fruits fall, they undergo comprehensive dust removal by the dust removal components inside the hopper, removing surface dust and impurities. The fruits then roll downwards along the inclined frame and screen surface, passing sequentially through three screening areas with different mesh sizes on the screen, achieving multi-stage sorting of different particle sizes and grading the dried fruits by size. After screening, the different particle sizes of the dried fruits fall into their respective independent cavities below and are finally discharged from the frame through their corresponding outlets, completing the graded discharge process.

[0013] 2. This multi-stage dust removal and sorting device for nuts and dried fruits, when the blower starts blowing air, the central output shaft of the blower simultaneously drives the rotating shaft, mounting plate and brush to rotate at high speed. During the rotation, the brush continuously sweeps and cleans the surface of the filter screen mesh in all directions, timely removing dust and debris adhering to the filter screen mesh, effectively preventing the filter screen from becoming clogged and having poor ventilation after long-term operation, continuously ensuring the smooth flow of dust removal air duct, and ensuring stable and efficient operation of dust removal. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a multi-stage dust removal and sorting device for nuts and dried fruits according to the present invention; Figure 2 This is a schematic diagram of the internal structure of a multi-stage dust removal and sorting device for nuts and dried fruits according to the present invention. Figure 3 This is a schematic diagram of the guide plate of the present invention; Figure 4 This is a schematic diagram of the inside of the feed hopper of the present invention.

[0015] Attached reference numerals: 1. Frame; 2. Cover plate; 3. Screen; 4. Discharge port; 5. Feed hopper; 6. Blower; 7. Collection pipe; 8. Dust collection bag; 9. Filter screen; 10. Partition plate; 11. Guide plate; 12. Rotating shaft; 13. Mounting plate; 14. Brush; 15. Caster wheel. Detailed Implementation

[0016] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0018] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0019] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0020] Please see Figure 1-4The present invention provides a technical solution: a multi-stage dust removal and sorting device for nuts and dried fruits, including a frame 1. The frame 1 adopts an inclined structure design. A screen 3 is movably installed inside the frame 1 through a buffer component. A vibration motor is fixedly installed on the outside of the screen 3, which can provide vibration power for the screening operation. A cover plate 2 is fixedly installed on the top of the frame 1. A feed hopper 5 is fixedly connected to the cover plate 2. Two blowers 6 are fixedly installed on one side of the feed hopper 5. The feed hopper 5 is equipped with a dust removal component for pre-treatment of dried fruit, which can thoroughly clean the dust on the surface of the dried fruit during the feeding process. The buffer assembly adopts an elastic buffer structure, specifically a buffer spring. The screen 3 is elastically suspended and installed inside the frame 1 by multiple sets of buffer springs, and the screen 3 and the frame 1 maintain the same tilt angle to ensure that the material slides down smoothly. The screen 3 is divided into three independent screening areas along the material conveying direction. The mesh size of the screen in the three screening areas increases sequentially. The discharge end of the feed hopper 5 is directly above the first screening area with the smallest mesh size of the screen 3, ensuring that the material first enters the large-aperture screening area to achieve graded screening.

[0021] The machine frame 1 has two partitions 10 fixedly installed inside. The two partitions 10 evenly divide the internal cavity of the machine frame 1 into three independent sealed cavities. The three screening areas of the screen 3 are precisely corresponding to and connected to the corresponding independent cavities below, which can realize the classification and storage of dried fruits of different particle sizes and avoid mixing.

[0022] The side wall of the frame 1 is provided with discharge ports 4 at the positions of the three independent cavities. The three discharge ports 4 correspond one-to-one with the corresponding independent cavities and are internally connected. The graded dried fruits can be discharged independently through the corresponding discharge ports 4.

[0023] During operation, workers feed the nuts and dried fruits into the equipment through the feed hopper 5. As the dried fruits fall, they first pass through the dust removal components inside the feed hopper 5 to remove all dust and impurities adhering to their surface. The dried fruits then roll downwards along the inclined frame 1 and the screen 3, sequentially passing through three screening areas with different mesh sizes on the screen 3. This multi-stage sorting of dried fruits of different sizes achieves graded classification. After screening, the dried fruits of different sizes fall into their respective independent cavities below and are finally discharged from the frame 1 through their respective discharge ports 4, completing the graded discharge process.

[0024] Meanwhile, the vibration motor can be started synchronously throughout the entire screening process. The vibration motor drives the screen 3 to vibrate at high frequency. Combined with the elastic buffering effect of the bottom buffer spring, it can effectively reduce material jamming and accumulation, improve the flow speed and screening uniformity of dried fruit on the surface of the screen 3, and greatly improve the overall screening efficiency and screening accuracy.

[0025] Furthermore, the dust removal component includes a guide plate 11. Multiple sets of guide plates 11 are fixedly installed inside the feed hopper 5 in a staggered and inclined manner to form a tortuous material conveying channel and extend the residence time of dried fruit inside the feed hopper 5. A collection pipe 7 is fixedly connected to one side of the outer wall of the feed hopper 5. A dust collection bag 8 is fixedly installed at the bottom of the collection pipe 7 to collect the filtered dust and impurities in a unified manner, so as to achieve dust-free operation. A filter screen 9 is embedded and fixedly installed on one side of the feed hopper 5 where the dust removal air vent is opened. Two rotating shafts 12 are rotatably connected to the inner end face of the filter screen 9. An installation plate 13 is fixedly fitted on the outer side of the rotating shaft 12. A brush 14 is fixedly fitted on the side of the installation plate 13 near the filter screen 9. The brush bristles of the brush 14 are in close contact with the surface of the filter screen 9, which can clean the filter screen blockage in real time. The ends of the two rotating shafts 12 away from the mounting plate 13 are fixedly connected to the center output shaft of the hair dryer 6, so as to realize the synchronous linkage between the hair dryer 6 and the rotating shafts 12.

[0026] Once the nuts and dried fruits are fed into the hopper 5, two sets of blowers 6 are simultaneously activated. Under the guidance and obstruction of multiple sets of staggered, inclined guide plates 11, the dried fruits are evenly dispersed and fall, forming a uniform material curtain, preventing material from piling up. At this time, the high-pressure airflow output by the blowers 6 thoroughly blows away the falling dried fruits, completely removing floating dust, debris, and impurities adhering to their surfaces. The blown-off dust and impurities, under the action of the airflow, pass through the filter screen 9 and enter the collection pipe 7, eventually settling and collecting inside the dust collection bag 8, completing the filtration and centralized collection of dust. The staggered arrangement of the guide plates 11 extends the material passage time, allowing the dried fruits to be fully exposed to airflow for dust removal, ensuring comprehensive dust removal effectiveness.

[0027] Furthermore, sufficient rotation clearance is reserved between the guide plate 11 and the filter screen 9 to completely avoid structural interference and ensure that the mounting plate 13 and the brush 14 can rotate without obstruction and operate normally.

[0028] While the blower 6 starts blowing air, the central output shaft of the blower 6 synchronously drives the rotating shaft 12, the mounting plate 13 and the brush 14 to rotate at high speed. During the rotation, the brush 14 continuously sweeps and cleans the surface of the filter screen 9 in all directions, and removes the dust and debris adhering to the mesh of the filter screen 9 in a timely manner. This effectively prevents the filter screen 9 from becoming clogged and having poor ventilation after long-term operation, and continuously ensures that the dust removal air duct is unobstructed, thus ensuring the stable and efficient operation of the dust removal operation.

[0029] Furthermore, casters 15 are fixedly installed at the four corners of the bottom of the frame 1. The casters 15 enable the equipment to move freely, adjust its position, and be placed in a fixed position, which greatly improves the flexibility of equipment handling and site adaptability, and facilitates equipment transfer, maintenance and site cleaning.

[0030] Working principle: The equipment is moved to the designated working position and fixed using the casters 15 at the bottom of the frame 1. The power supply is then turned on, and the two sets of blowers 6 and the vibration motors at the bottom of the screen 3 are started in advance to put the equipment into the pre-working state. The workers put the nuts and dried fruits to be processed into the equipment from the top of the feed hopper 5. After the dried fruits enter the feed hopper 5, they fall slowly and evenly along the tortuous channel under the obstruction and guidance of multiple sets of staggered and inclined guide plates 11, forming a uniformly dispersed material curtain, which effectively extends the material dust removal time. At the same time, the running blower 6 outputs high-pressure airflow to blow the falling dried fruit material, thoroughly removing the floating dust and fine impurities attached to the surface of the dried fruit. The removed dust and impurities are pushed by the wind and pass through the filter screen 9 on the side wall of the feed hopper 5 into the collection pipe 7, and finally collected in the dust collection bag 8, completing the centralized collection and treatment of dust. Furthermore, during the operation of the blower 6, its output shaft synchronously drives the rotating shaft 12, the mounting plate 13 and the brush 14 to rotate continuously. The brush 14 sweeps the surface of the filter screen 9 in real time to prevent dust from clogging the mesh and to continuously ensure dust removal and ventilation efficiency. After dust removal, the dried fruit continues to fall onto the surface of the inclined screen 3. The vibrating motor, in conjunction with the buffer spring, drives the screen 3 to vibrate continuously at a high frequency, causing the dried fruit to roll and be conveyed downwards at a uniform speed along the screen surface. The dried fruit passes through three screening areas on the screen 3 with progressively increasing mesh sizes. The smaller dried fruit passes through the large-aperture screen first and falls into the corresponding independent cavity below. The medium and large-sized dried fruits are then graded and screened in subsequent screening areas and fall into the other two independent cavities separated by two partitions 10. This thoroughly achieves multi-level classification of dried fruit of different sizes. Finally, the graded dried fruit in the three independent cavities is discharged independently through the three discharge ports 4 on the side wall of the frame 1. The entire process of automatic dust removal, vibrating screening, multi-level grading, and classified discharge of dried fruit is completed synchronously. The overall operation is continuous and efficient, with high screening accuracy and good dust removal effect. At the same time, the equipment can be moved flexibly to adapt to the processing needs of different work sites.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multi-stage dust removal and sorting device for nuts and dried fruits, comprising a frame (1), characterized in that: The frame (1) adopts an inclined structure design. Inside the frame (1), a screen (3) is movably installed through a buffer assembly. A vibration motor is fixedly installed on the outside of the screen (3). A cover plate (2) is fixedly installed on the top of the frame (1), and a feed hopper (5) is fixedly connected to the cover plate (2). Two blowers (6) are fixedly installed on one side of the feed hopper (5), and a dust removal component for pre-treatment of dried fruit is integrated inside the feed hopper (5). The screen (3) is divided into three independent screening areas along the material conveying direction. The mesh size of the three screening areas increases sequentially, and the discharge end of the feed hopper (5) is directly above the first screening area with the smallest mesh size of the screen (3).

2. The multi-stage dust removal and sorting device for nuts and dried fruits according to claim 1, characterized in that: The dust removal component includes a guide plate (11). Multiple guide plates (11) are fixedly installed inside the feed hopper (5) in a staggered and inclined manner to form a tortuous material conveying channel and extend the residence time of dried fruit inside the feed hopper (5). A collection pipe (7) is fixedly connected to one side of the outer wall of the feed hopper (5), and a dust collection bag (8) is fixedly installed at the bottom of the collection pipe (7).

3. The multi-stage dust removal and sorting device for nuts and dried fruits according to claim 2, characterized in that: A filter screen (9) is embedded and fixedly installed on one side of the feed hopper (5) with a dust removal air vent. Two rotating shafts (12) are rotatably connected to the inner end face of the filter screen (9). An installation plate (13) is fixedly fitted on the outer side of the rotating shaft (12). A brush (14) is fixedly fitted on the side of the installation plate (13) close to the filter screen (9). The brush bristle end face of the brush (14) is in close contact with the surface of the filter screen (9). The ends of the two rotating shafts (12) away from the mounting plate (13) are fixedly connected to the center output shaft of the hair dryer (6) to realize the synchronous linkage between the hair dryer (6) and the rotating shaft (12).

4. The multi-stage dust removal and sorting device for nuts and dried fruits according to claim 3, characterized in that: A gap is reserved between the guide plate (11) and the filter screen (9) to allow the mounting plate (13) and the brush (14) to rotate.

5. The multi-stage dust removal and sorting device for nuts and dried fruits according to claim 1, characterized in that: The frame (1) is fixedly installed with casters (15) at the four corners of its bottom.

6. The multi-stage dust removal and sorting device for nuts and dried fruits according to claim 1, characterized in that: The frame (1) has two partitions (10) fixedly installed inside, which divide the internal cavity of the frame (1) into three independent sealed cavities.

7. The multi-stage dust removal and sorting device for nuts and dried fruits according to claim 1, characterized in that: The side wall of the frame (1) is provided with discharge ports (4) corresponding to the three independent cavities. The three discharge ports (4) correspond one-to-one with the corresponding independent cavities and are internally connected.

8. The multi-stage dust removal and sorting device for nuts and dried fruits according to claim 1, characterized in that: The buffer assembly adopts an elastic buffer structure, specifically a buffer spring. The screen (3) is elastically suspended and installed inside the frame (1) by multiple sets of buffer springs, and the screen (3) and the frame (1) maintain the same tilt angle.

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