Screening device for vegetable processing and screening method thereof

Abstract

The invention relates to the technical field of screening devices, in particular to a screening device for vegetable processing and a screening method thereof. According to the technical scheme, the fruit sorting machine comprises a machine frame, a hopper installed on the machine frame in a sliding mode, a driving mechanism driving the hopper to move and a flow limiting mechanism installed on the hopper, the flow limiting mechanism controls the discharging state of the hopper, the flow limiting mechanism controls that only a single fruit can pass through the hopper at a time, and two gravity sorting mechanisms are installed on the machine frame in a sliding mode. The gravity sorting mechanism is mounted on the rack, and the gravity sorting mechanism bears the fruits flowing out of the hopper and classifies the fruits according to the weights of the fruits. According to the fruit sorting device, fruits with different gravities can pass through the bearing plates with different layers and finally stay on the bearing plates corresponding to the weights of the fruits, so that the fruits can be sorted according to the weights of the fruits, and the fruit sorting device is suitable for screening vegetables and fruits.

Description

Technical Field

[0001] The present invention relates to the technical field of screening devices, and in particular to a screening device for vegetable processing and a screening method thereof. Background Art

[0002] In the process of vegetable processing, sorting the fruit by size is an important step. This is usually to meet the market's different demands for product specifications, ensure product consistency and improve its market value. The screening device for vegetable processing is a mechanical device used to separate vegetables of different sizes or grades during vegetable processing.

[0003] Existing screening devices use the principle of vibration to make vegetables jump on the screen surface and separate materials of different sizes through the screen holes. The vibration of the screen surface can be circular, linear or in other ways. This method uses the shape of the screen holes to screen the size of the fruit, but due to the irregular shape of the fruit, even if the size is similar, the screening may be inaccurate due to the difference in shape. Fruits with large differences in gram weight may be screened into one category, resulting in poor screening accuracy. Summary of the invention

[0004] The purpose of the present invention is to address the problems existing in the background technology and to provide a screening device and a screening method for vegetable processing.

[0005] In one aspect, the present invention provides a screening device for vegetable processing, comprising a frame and further comprising: A hopper slidably mounted on the frame, and a driving mechanism for driving the hopper to move; A flow limiting mechanism installed on the hopper, the flow limiting mechanism controls the feeding state of the hopper, and the flow limiting mechanism controls that only a single fruit can pass through the hopper at a time; Two gravity sorting mechanisms are installed on the frame, and the gravity sorting mechanisms carry the fruits flowing out of the hopper and classify the fruits according to the weight of the fruits.

[0006] Optionally, support rods are fixedly mounted on both sides of the frame, and the hopper is slidably mounted on the support rods.

[0007] Optionally, the driving mechanism includes a first push rod motor fixedly mounted on a frame, and an output shaft of the first push rod motor is fixedly connected to the hopper.

[0008] Optionally, the flow limiting mechanism includes a flow guide cover fixedly mounted on the hopper, a plurality of partitions fixedly mounted inside the flow guide cover, the partitions divide the flow guide cover into a plurality of flow chambers, sealing plates are slidably mounted on the upper and lower sides of the flow chambers, and the flow limiting mechanism also includes a driving assembly for driving the two sealing plates to move synchronously in opposite directions.

[0009] Optionally, the driving assembly includes a buffer fixedly mounted on the sealing plate, a connecting seat fixedly mounted on the buffer, rocker arms rotatably mounted on two of the connecting seats, a positioning plate fixedly mounted on the hopper, a middle portion of the rocker arm rotatably connected to the positioning plate, a second push rod motor fixedly mounted on the hopper, and an output shaft of the second push rod motor fixedly connected to one of the connecting seats.

[0010] Optionally, the buffer component includes a connecting rod fixedly mounted on the sealing plate, a connecting tube slidably mounted on the connecting rod, a first spring fixedly mounted in the connecting tube, the other end of the first spring fixedly connected to the connecting rod, and the connecting tube corresponds one-to-one to the connecting seat and is fixedly connected.

[0011] Optionally, the gravity sorting mechanism includes a sorting box fixedly mounted on a frame, a plurality of baffles fixedly mounted in the sorting box, the baffles divide the sorting box into a plurality of receiving slots, and a plurality of sorting components are mounted in the receiving slots.

[0012] Optionally, the sorting component includes a load-bearing plate rotatably installed on both sides of the accommodating groove, support blocks are fixedly installed on both sides of the accommodating groove, a second spring is fixedly installed on the support block, the other end of the second spring is fixedly connected to the load-bearing plate, and the elastic coefficient of the second spring increases from top to bottom.

[0013] Optionally, a disengagement component is fixedly installed on the sorting box, and the disengagement includes multiple push plates slidably installed in the accommodating grooves, and the push plates correspond one-to-one to multiple groups of the sorting components. Multiple driving rods are slidably installed on the sorting box, and the multiple driving rods correspond one-to-one to the multiple push plates and are fixedly connected. A synchronization plate is fixedly installed on the multiple driving rods. Two third push rod motors are fixedly installed on the frame, and the output shaft of the third push rod motor is fixedly connected to the synchronization plate. The sorting box is provided with multiple discharge ports and has multiple guide plates fixedly installed.

[0014] On the other hand, the present invention also provides a vegetable processing screening method, which is applied to the above-mentioned vegetable processing screening device, and the method comprises the following steps: Step 1: Put the fruit into the hopper, and drive the hopper to move back and forth on the two sorting boxes through the driving mechanism, so that the fruit enters the two sorting boxes periodically; Step 2: Control the flow state of the flow guide cover by means of a flow limiting mechanism so that only a single fruit can flow out of the flow cavity at a time; Step 3: The fruits in the sorting box will fall onto the load-bearing plate. The heavier the fruit, the more load-bearing plates it can pass through, and finally the fruit will rest on the load-bearing plate. Step 4: Push the fruits on the load-bearing plate out of the sorting box through the separation component to complete the sorting of the fruits.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: The present invention can make fruits of different gravities pass through different layers of load-bearing plates through the arrangement of the sorting components, and finally stay on the load-bearing plates corresponding to their weights, so that the fruits can be classified according to their own weights, and the problem of inaccurate screening due to the shape of the sieve holes when screening the size of the fruits is avoided, because the fruits have irregular shapes, even if they are of similar sizes, the difference in shape may lead to inaccurate screening.

[0016] Furthermore, by setting up two sorting boxes and using a driving mechanism and a current limiting mechanism in coordination, the fruits can continuously enter the two sorting boxes and ensure that only one fruit contacts the load-bearing plate at a time. This ensures that the second spring has sufficient rebound time while ensuring the sorting efficiency, thereby preventing the problem of reduced sorting accuracy caused by the second spring failing to rebound in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the screening device of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure of the screening device of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a structural schematic diagram of the current limiting mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the flow chamber of the present invention; Figure 5 It is a structural schematic diagram of the connecting socket of the present invention; Figure 6 is a schematic structural diagram of the first spring of the present invention; Figure 7 It is a structural schematic diagram of the sorting box of the present invention; Figure 8 It is a schematic diagram of the internal structure of the sorting box of the present invention; Fig. 9 For the present invention Figure 8 A partial enlarged view of point A in the middle.

[0018] Figure numerals: 1, frame; 2, support rod; 201, hopper; 202, first push rod motor; 3, guide cover; 301, partition; 302, flow chamber; 303, connecting rod; 304, sealing plate; 305, connecting cylinder; 306, first spring; 307, connecting seat; 308, rocker arm; 309, positioning plate; 310, second push rod motor; 4, sorting box; 401, baffle; 402, receiving groove; 403, load-bearing plate; 404, support block; 405, second spring; 5, push plate; 501, drive rod; 502, synchronization plate; 503, third push rod motor; 504, discharge port; 505, guide plate. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1-3 As shown, on one hand, the present invention proposes a screening device for vegetable processing, including a frame 1, a hopper 201 slidably mounted on the frame 1, and a driving mechanism for driving the hopper 201 to move. The hopper 201 is used to place fruits, and the driving mechanism can drive the hopper to swing back and forth, which can control the landing point when the fruits flow out of the hopper 201, and can help the fruits to be evenly distributed in the hopper 201. Support rods 2 are fixedly mounted on both sides of the frame 1, and the hopper 201 is slidably mounted on the support rods 2. The driving mechanism includes a first push rod motor 202 fixedly mounted on the frame 1, and the output shaft of the first push rod motor 202 is fixedly connected to the hopper 201. The first push rod motor 202 can drive the hopper 201 to move along the support rod 2, and then the hopper 201 can be reciprocated.

[0021] like Figure 2-6 As shown, this embodiment also includes a flow limiting mechanism installed on the hopper 201, and the flow limiting mechanism controls the unloading state of the hopper 201. The flow limiting mechanism controls that only a single fruit can pass through the hopper 201 at a time. The problem of reducing the sorting accuracy due to the outflow of multiple fruits at a time is prevented. The flow limiting mechanism includes a flow guide cover 3 fixedly installed on the hopper 201, and a plurality of partitions 301 are fixedly installed in the flow guide cover 3. The partitions 301 divide the flow guide cover 3 into a plurality of flow chambers 302. Sealing plates 304 are slidably installed on both the upper and lower sides of the flow chamber 302. The flow limiting mechanism also includes a driving component that drives the two sealing plates 304 to move synchronously in opposite directions. The two sealing plates 304 are driven by a driving mechanism to move synchronously. When the upper sealing plate 304 clamps the fruit, the lower sealing plate 304 will move away from the fruit, so that the fruit on the side of the lower sealing plate 304 will fall off. At this time, the fruit in the hopper 201 will be blocked by the upper sealing plate 304, thereby ensuring that only a single fruit can pass through the flow cavity 302 at a time.

[0022] Furthermore, the driving assembly includes a buffer fixedly mounted on the sealing plate 304, a connecting seat 307 is fixedly mounted on the buffer, a swing rod 308 is rotatably mounted on two connecting seats 307, a positioning plate 309 is fixedly mounted on the hopper 201, the middle part of the swing rod 308 is rotatably connected to the positioning plate 309, a second push rod motor 310 is fixedly mounted on the hopper 201, and the output shaft of the second push rod motor 310 is fixedly connected to one of the connecting seats 307. When the second push rod motor 310 pushes the connecting seat 307 connected thereto, the connecting seat 307 will drive the swing rod 308 to rotate, and the rotating swing rod 308 will drive the other connecting seat 307 to slide on the air deflector 3, thereby driving the sealing plate 304 connected thereto to move, so that the two sealing plates 304 can move synchronously but in opposite directions.

[0023] It should be noted that both ends of the rocker arm 308 are provided with a telescopic structure, which is an ordinary telescopic rod structure and will not be elaborated here. That is, both ends of the rocker arm 308 can be telescoped when the connecting seat 307 rotates, which can meet the action requirements and prevent jamming.

[0024] The buffer comprises a connecting rod 303 fixedly mounted on the sealing plate 304, a connecting cylinder 305 is slidably mounted on the connecting rod 303, a first spring 306 is fixedly mounted in the connecting cylinder 305, the other end of the first spring 306 is fixedly connected to the connecting rod 303, and the connecting cylinder 305 corresponds to and is fixedly connected to the connecting seat 307. When the connecting seat 307 moves, the connecting cylinder 305 and the connecting rod 303 will be driven to move, and the sealing plate 304 can be driven to move by the moving connecting rod 303. When the sealing plate 304 contacts the fruit, the connecting seat 307 that continues to move will drive the connecting cylinder 305 to slide on the connecting rod 303 and compress the first spring 306, thereby ensuring that the sealing plate 304 will not crush the fruit and that the sealing plate 304 can fix fruits of different shapes and sizes.

[0025] like Figure 1-2 and Figure 7-9As shown, the present embodiment also includes two gravity sorting mechanisms, which are installed on the frame 1. The gravity sorting mechanisms carry the fruits flowing out of the hopper 201 and classify the fruits according to the weight of the fruits. The gravity sorting mechanism includes a sorting box 4 fixedly installed on the frame 1, and a plurality of baffles 401 are fixedly installed in the sorting box 4. The baffles 401 divide the sorting box 4 into a plurality of receiving slots 402, and a plurality of sorting components are installed in the receiving slots 402. As the first push rod motor 202 drives the hopper 201 to move, the moving hopper 201 will reciprocate on the two sorting boxes 4. When the circulation cavity 302 and the receiving slot 402 are aligned, a single fruit can pass through the circulation cavity 302 and enter the receiving slot 402. The first push rod motor 202 continuously drives the hopper 201 to move, so that the fruit can periodically fall into the receiving slots 402 on both sides.

[0026] Furthermore, the sorting component includes a load-bearing plate 403 rotatably installed on both sides of the accommodating groove 402, support blocks 404 are fixedly installed on both sides of the accommodating groove 402, and a second spring 405 is fixedly installed on the support block 404. The other end of the second spring 405 is fixedly connected to the load-bearing plate 403, and the elastic coefficient of the second spring 405 increases from top to bottom. After the fruit enters the containing groove 402, the fruit will come into contact with the load-bearing plate 403. Under the action of the kinetic energy of the fruit when it descends and the gravitational potential energy, the fruit will squeeze the load-bearing plate 403 and compress the second spring 405. When the gravity of the fruit is sufficient, it can drive the two load-bearing plates 403 to rotate, and pass through the two load-bearing plates 403 when the gap between the two load-bearing plates 403 is large enough, and then come into contact with the lower load-bearing plate 403. Since the elastic coefficient of the second spring 405 increases successively from top to bottom, a greater gravity is required to pass through the lower load-bearing plate 403, so that fruits of different gravity can pass through different layers of load-bearing plates 403, and finally stay on the load-bearing plate 403 corresponding to their weight, so that the fruits can be classified according to their own weight.

[0027] like Figure 2 and Figure 7 as well as Fig. 9As shown, in this embodiment, a disengagement assembly is fixedly installed on the sorting box 4, and the disengagement includes a plurality of push plates 5 slidably installed in the receiving groove 402, and the push plates 5 correspond to the plurality of sorting assemblies one by one. A plurality of driving rods 501 are slidably installed on the sorting box 4, and the plurality of driving rods 501 correspond to and are fixedly connected to the plurality of push plates 5 one by one, and a synchronization plate 502 is fixedly installed on the plurality of driving rods 501, and two third push rod motors 503 are fixedly installed on the frame 1, and the output shaft of the third push rod motor 503 is fixedly connected to the synchronization plate 502, and the sorting box 4 is provided with a plurality of discharge ports 504 and a plurality of guide plates 505 are fixedly installed. After one sorting is completed, the synchronization plate 502 is driven to move by starting the third push rod motor 503, and the plurality of driving rods 501 can be driven to move, and the moving driving rods 501 will drive the push plates 5 to move, and the fruits on the bearing plate 403 are pushed to move by the push plates 5, and finally the fruits pass through the discharge ports 504 and flow through the guide plates 505 to the corresponding collection boxes.

[0028] On the other hand, the present invention provides a screening method for vegetable processing, which is applied to a screening device for vegetable processing. The method comprises the following steps: Step 1: Put the fruits into the hopper 201, and drive the hopper 201 to move back and forth on the two sorting boxes 4 through the driving mechanism, so that the fruits periodically enter the two sorting boxes 4; Step 2: Control the flow state of the flow guide cover 3 by the flow limiting mechanism so that only a single fruit can flow out of the flow cavity 302 at a time; Step 3: The fruits entering the sorting box 4 will fall onto the load-bearing plate 403. The heavier the fruits are, the more load-bearing plates 403 they can pass through, and finally the fruits will rest on the load-bearing plate 403. Step 4: Push the fruits on the load-bearing plate 403 out of the sorting box 4 through the separation component to complete the sorting of the fruits.

[0029] Working principle: The hopper 201 is used to place fruits. As the first push rod motor 202 drives the hopper 201 to move, the moving hopper 201 will reciprocate on the two sorting boxes 4. When the circulation chamber 302 is aligned with the containing slot 402, the two sealing plates 304 are driven by the driving mechanism to move synchronously. When the upper sealing plate 304 clamps the fruit, the lower sealing plate 304 will move away from the fruit, thereby causing the fruit on the side of the lower sealing plate 304 to fall off. At this time, the fruit in the hopper 201 will be blocked by the upper sealing plate 304, thereby ensuring that only a single fruit can pass through the circulation chamber 302 at a time. By setting the buffer part, when the sealing plate 304 comes into contact with the fruit, the continuously moving connecting seat 307 will drive the connecting tube 305 to slide on the connecting rod 303 and compress the first spring 306, thereby ensuring that the sealing plate 304 will not crush the fruit and ensuring that the sealing plate 304 can fix fruits of different shapes and sizes.

[0030] When the fruit enters the receiving groove 402, the fruit will come into contact with the load-bearing plate 403. The kinetic energy of the fruit when it descends and the gravitational potential energy will squeeze the load-bearing plate 403. When the gravity of the fruit is sufficient, it can drive the two load-bearing plates 403 to rotate, and when the gap between the two load-bearing plates 403 is large enough, the fruit passes through the two load-bearing plates 403, and then comes into contact with the lower load-bearing plate 403. Since the elastic coefficient of the second spring 405 increases successively from top to bottom, a greater gravity is required to pass through the lower load-bearing plate 403, so that fruits of different gravity can pass through different layers of load-bearing plates 403, and finally stay on the load-bearing plates 403 corresponding to their weight, so that the fruits can be classified according to their own weight. After completing a sorting process, the third push rod motor 503 is started to drive the synchronous plate 502 to move, which can drive multiple driving rods 501 to move. The moving driving rods 501 will drive the push plate 5 to move, and the push plate 5 will push the fruit on the load-bearing plate 403 to move, and finally the fruit will pass through the discharge port 504 and flow through the guide plate 505 to the corresponding collection box.

[0031] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A screening device for vegetable processing, comprising a frame (1), characterized in that: Also includes: A hopper (201) slidably mounted on the frame (1), and a driving mechanism for driving the hopper (201) to move; A flow limiting mechanism installed on the hopper (201), the flow limiting mechanism controlling the feeding state of the hopper (201), the flow limiting mechanism controlling the hopper (201) to allow only a single fruit to pass through at a time; Two gravity sorting mechanisms are installed on the frame (1), and the gravity sorting mechanisms carry the fruits flowing out of the hopper (201) and classify the fruits according to their weight.

2. A screening device for vegetable processing according to claim 1, characterized in that: Support rods (2) are fixedly mounted on both sides of the frame (1), and the hopper (201) is slidably mounted on the support rods (2).

3. A screening device for vegetable processing according to claim 1, characterized in that: The driving mechanism comprises a first push rod motor (202) fixedly mounted on the frame (1), and an output shaft of the first push rod motor (202) is fixedly connected to the hopper (201).

4. A screening device for vegetable processing according to claim 3, characterized in that: The flow limiting mechanism comprises a flow guide cover (3) fixedly mounted on the hopper (201), a plurality of partitions (301) fixedly mounted inside the flow guide cover (3), the partitions (301) dividing the flow guide cover (3) into a plurality of flow chambers (302), sealing plates (304) slidably mounted on both upper and lower sides of the flow chambers (302), and the flow limiting mechanism further comprises a driving component for driving the two sealing plates (304) to move synchronously in opposite directions.

5. A screening device for vegetable processing according to claim 4, characterized in that: The driving assembly comprises a buffer fixedly mounted on the sealing plate (304), a connecting seat (307) fixedly mounted on the buffer, rocker arms (308) rotatably mounted on two of the connecting seats (307), a positioning plate (309) fixedly mounted on the hopper (201), a middle portion of the rocker arm (308) rotatably connected to the positioning plate (309), a second push rod motor (310) fixedly mounted on the hopper (201), and an output shaft of the second push rod motor (310) fixedly connected to one of the connecting seats (307).

6. A screening device for vegetable processing according to claim 5, characterized in that: The buffer component comprises a connecting rod (303) fixedly mounted on a sealing plate (304); a connecting tube (305) is slidably mounted on the connecting rod (303); a first spring (306) is fixedly mounted inside the connecting tube (305); the other end of the first spring (306) is fixedly connected to the connecting rod (303); and the connecting tube (305) corresponds to the connecting seat (307) one by one and is fixedly connected.

7. A screening device for vegetable processing according to claim 6, characterized in that: The gravity sorting mechanism comprises a sorting box (4) fixedly mounted on a frame (1), a plurality of baffles (401) fixedly mounted in the sorting box (4), the baffles (401) dividing the sorting box (4) into a plurality of receiving slots (402), and a plurality of sorting components mounted in the receiving slots (402).

8. A screening device for vegetable processing according to claim 7, characterized in that: The sorting assembly comprises a load-bearing plate (403) rotatably mounted on both sides of the containing groove (402), support blocks (404) are fixedly mounted on both sides of the containing groove (402), a second spring (405) is fixedly mounted on the support block (404), the other end of the second spring (405) is fixedly connected to the load-bearing plate (403), and the elastic coefficient of the second spring (405) increases from top to bottom.

9. A screening device for vegetable processing according to claim 8, characterized in that: The sorting box (4) is fixedly mounted with a disengagement assembly, the disengagement comprising a plurality of push plates (5) slidably mounted in the accommodating groove (402), the push plates (5) corresponding one-to-one with the plurality of groups of the sorting assemblies, a plurality of drive rods (501) slidably mounted on the sorting box (4), the plurality of drive rods (501) corresponding one-to-one with the plurality of push plates (5) and fixedly connected, a synchronization plate (502) fixedly mounted on the plurality of drive rods (501), two third push rod motors (503) fixedly mounted on the frame (1), the output shaft of the third push rod motor (503) fixedly connected with the synchronization plate (502), and a plurality of discharge ports (504) and a plurality of guide plates (505) fixedly mounted on the sorting box (4).

10. A vegetable processing screening method, applied to the vegetable processing screening device as claimed in claim 8 or 9, the method comprising the following steps: Step 1: placing fruits into the hopper (201), and driving the hopper (201) to move back and forth on the two sorting boxes (4) through a driving mechanism, so that the fruits periodically enter the two sorting boxes (4); Step 2: controlling the flow state of the flow guide cover (3) by means of a flow limiting mechanism so that only a single fruit can flow out of the flow cavity (302) at a time; Step 3: The fruits entering the sorting box (4) will fall onto the load-bearing plate (403). The heavier the fruits are, the more load-bearing plates (403) they can pass through, and finally the fruits will remain still on the load-bearing plate (403); Step 4: The fruits on the load-bearing plate (403) are pushed out of the sorting box (4) by the separation component, thereby completing the sorting of the fruits.

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