Multi-specification wolfberry synchronous screening and air drying equipment and application process thereof

Abstract

The invention relates to the technical field of Chinese wolfberry processing, and particularly discloses multi-specification Chinese wolfberry synchronous screening and air-drying equipment and an application process thereof.The multi-specification Chinese wolfberry synchronous screening and air-drying equipment comprises an air-drying box, a synchronous stirring device is installed in the air-drying box, the interior of the air-drying box is divided into three air-drying cavities, and air inlets are formed in the rear sides of the three air-drying cavities; the air inlet is connected with a wind power adjustable conveying device, one end of the wind power adjustable conveying device is communicated with a fan, three feeding hoppers are arranged at the top of the air drying box, and a grading screening device is arranged at the upper ends of the feeding hoppers and fixedly installed through a supporting frame; mixed Chinese wolfberries are divided into large, medium and small specifications through the grading screening device, the wind power adjustable conveying device independently controls the air volume of each air drying cavity through an adjusting valve, the water evaporation requirements of the Chinese wolfberries of different specifications are met, synchronous screening and precise air drying of the Chinese wolfberries of multiple specifications are achieved, air drying uniformity is improved, and therefore the processing efficiency and effect are improved.

Description

Technical Field

[0001] This invention relates to the field of wolfberry processing technology, and in particular to a multi-specification wolfberry simultaneous screening and air-drying equipment and its application process. Background Technology

[0002] Goji berries have various health benefits and are approved by the Ministry of Health as a food with both medicinal and edible uses. Moderate consumption is beneficial to health, and when combined with chrysanthemum and goji berry tea, they can help clear the liver and improve eyesight. In the processing of goji berries, screening and air-drying are key steps. Currently, most equipment can only screen or air-dry goji berries of a single size. If mixed sizes of goji berries need to be processed, screening and air-drying must be done in batches, which is not only time-consuming and labor-intensive, but also inefficient and prone to cross-contamination between different sizes.

[0003] Existing technology CN115090509A discloses a multifunctional screening and drying device for processing goji berries, including an outer cylinder, an annular plate at the upper end of the outer cylinder, an annular groove on the outer cylinder, a slider fixed on the annular plate and slidably disposed with the annular groove, a linkage gear fixedly wrapped on the annular plate, a first motor fixed on the outer cylinder, a drive gear meshing with the linkage gear fixed on the shaft of the first motor, a mesh cylinder fixedly embedded in the annular plate, a mesh plate hinged to the lower end of the mesh cylinder, and the opening and closing positions of the mesh plate and the mesh cylinder being set by a door lock latch. This invention uses a mesh cylinder and mesh plate to store goji berries, and then the rotation of the mesh cylinder driven by the annular plate achieves centrifugal screening of particulate impurities present in the goji berries. Simultaneously, the upward stirring and conveying by the spiral blades achieves a turning effect during goji berry screening.

[0004] However, the above-mentioned technologies cannot adjust the sieving grade according to actual processing needs. Large-sized goji berries are prone to incomplete drying due to their large size and high moisture content; while small-sized goji berries may lose too much water due to excessive wind, affecting their taste and quality. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-specification goji berry synchronous screening and air-drying equipment and its application process, aiming to solve the technical problems of existing goji berry processing equipment being unable to process multi-specification goji berries simultaneously and having poor air-drying uniformity.

[0006] To achieve the above objectives, the present invention employs a multi-specification goji berry synchronous screening and air-drying device, comprising an air-drying box, a synchronous stirring device installed inside the air-drying box, the interior of the air-drying box being divided into three air-drying chambers, each of the three air-drying chambers having an air inlet on its rear side, the air inlet being connected to an adjustable wind-power conveying device, one end of the adjustable wind-power conveying device being connected to a fan, the top of the air-drying box having three feeding hoppers, the upper end of each feeding hopper having a grading and screening device, the grading and screening device being fixedly installed by a support frame.

[0007] The synchronous stirring device includes a rotating motor installed at one end of the outside of the drying box. The rotating output end of the rotating motor is fixedly connected to a rotating shaft. The rotating shaft passes through the three drying chambers of the drying box and is rotatably connected to the drying box through sealed bearings. The stirring components are fixedly installed at the positions of the rotating shaft in the three drying chambers respectively.

[0008] The stirring assembly includes support rods and arc-shaped shovels. Three sets of support rods are installed in each drying chamber, with two support rods in each set. An arc-shaped shovel is fixedly installed on each set of support rods, and the outer side of the arc-shaped shovel is in contact with the inner wall of the drying chamber.

[0009] The wind-adjustable conveying device includes an air diffuser fixedly installed at the three air inlets. Each air diffuser is connected to the conveying pipe. One end of the conveying pipe is fixedly connected to the air outlet of the fan. An adjustment valve is installed at the connection position between the air diffuser and the conveying pipe.

[0010] The air diffuser also includes an air inlet baffle, which is fixedly installed at one end of the air diffuser near the air drying chamber.

[0011] The grading and screening device includes a screening assembly fixedly installed by a support frame. A primary screening screen is installed at the upper end of the screening assembly, and a secondary screening screen is installed in the middle of the screening assembly. Both the primary and secondary screening screens are driven to move by an electric telescopic rod for screening. Guide plates are installed at the lower ends of both the primary and secondary screening screens, and a tertiary conveying hopper is installed at the lower end of the screening assembly.

[0012] The screening assembly includes a fixed frame that is fixedly installed on the top of the support frame. The fixed frame has grooves on both sides inside, and a slider is slidably installed in the groove. The slider is fixedly connected to the primary screening screen. A lifting and discharging plate is slidably installed at the front end of the fixed frame.

[0013] The grading and screening device further includes a first feeding cylinder and a second feeding cylinder. The first feeding cylinder is installed at the front end of the primary screening screen, and the second feeding cylinder is installed at the front end of the secondary screening screen.

[0014] The drying box also includes a discharge port and a discharge cover. The bottom of the drying box is provided with three discharge ports, and each of the three discharge ports is equipped with a discharge cover.

[0015] The present invention also includes an application process for simultaneous screening and air-drying of multi-specification wolfberries, comprising the following steps: Adjust the lifting and unloading plate and the discharge cover to the closed state, and adjust the opening of the three regulating valves according to the air-drying requirements of different specifications of goji berries; The mixed-size goji berry raw materials are poured into the primary screening screen. The electric telescopic rod is started to drive the primary screening screen to reciprocate. Large-size goji berries remain in the primary screening screen, the rest fall into the secondary screening screen for screening to separate medium-size goji berries, and finally small-size goji berries fall into the tertiary conveyor hopper. Small-sized goji berries are directly fed into the corresponding drying chamber via the three-stage conveyor bucket. Then, the lifting and discharging plates corresponding to the first-stage and second-stage sieves are opened. Large-sized goji berries are fed into the corresponding drying chamber via the first feeding cylinder and medium-sized goji berries are fed into the corresponding drying chamber via the second feeding cylinder. Start the fan and the rotating motor, and the airflow enters each of the drying chambers through the regulating valve and the air diffuser. The rotating shaft drives the arc-shaped shovel to turn the goji berries, so as to achieve synchronous and uniform air drying. After air drying is complete, turn off the equipment, open the corresponding discharge cover, and collect the air-dried goji berries of different sizes.

[0016] The present invention provides a multi-specification simultaneous screening and air-drying device for wolfberries and its application process, which has the following beneficial effects: To achieve simultaneous processing of multiple specifications, the mixed goji berries are divided into three specifications—large, medium, and small—by the grading and screening device, and then simultaneously dried in three independent drying chambers, eliminating the need for batch processing. The air-drying accuracy is high. The adjustable air-power conveying device independently controls the air volume of each air-drying chamber through the regulating valve, which can adapt to the moisture evaporation requirements of different sizes of goji berries and avoid incomplete air-drying or excessive water loss. The air-drying uniformity is good. The synchronous stirring device drives the arc-shaped shovel to simultaneously turn the goji berries in each of the air-drying chambers. The arc-shaped shovel is designed to fit the inner wall of the air-drying chamber, which can prevent the goji berries from piling up and ensure that each goji berry is in full contact with the airflow. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a multi-specification goji berry synchronous screening and air-drying device according to the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of a multi-specification goji berry synchronous screening and air-drying device according to the present invention.

[0020] Figure 3 This is a top view of a multi-specification goji berry synchronous screening and air-drying device according to the present invention.

[0021] Figure 4 This is a schematic diagram showing the connection of the air-drying box, the synchronous stirring device, and the wind-adjustable conveying device of the present invention.

[0022] Figure 5 This is a schematic diagram of the connection structure between the drying box and the wind-adjustable conveying device of the present invention.

[0023] Figure 6 This is a cross-sectional view of the drying box of the present invention.

[0024] Figure 7 This is a partially exploded view of the sieving assembly of the present invention.

[0025] In the diagram, 1-drying box, 11-feeding hopper, 12-drying chamber, 13-air inlet, 14-discharge outlet, 15-discharge cover, 2-synchronous stirring device, 21-rotating motor, 22-rotating shaft, 23-stirring assembly, 231-support rod, 232-arc shovel, 3-adjustable wind-powered conveying device, 31-conveying pipe, 32-regulating valve, 33-air diffuser, 34-air inlet baffle, 4-fan, 5-grading and screening device, 51-screening installation assembly, 52-primary screening screen, 53-secondary screening screen, 54-electric telescopic rod, 55-guide plate, 56-tertiary conveying hopper, 57-first feeding cylinder, 58-secondary feeding cylinder, 511-fixed frame, 512-slider, 513-slide groove, 514-lifting discharge plate. Detailed Implementation

[0026] Please see Figures 1-7 This invention provides a multi-specification goji berry synchronous screening and air-drying device, including an air-drying box 1, a synchronous stirring device 2 installed inside the air-drying box 1, and three air-drying chambers 12 divided inside the air-drying box 1. Each of the three air-drying chambers 12 has an air inlet 13 on its rear side. The air inlet 13 is connected to an adjustable wind-power conveying device 3. One end of the adjustable wind-power conveying device 3 is connected to a fan 4. The top of the air-drying box 1 has three feeding hoppers 11. The upper end of each feeding hopper 11 is equipped with a grading and screening device 5, which is fixedly installed by a support frame. The air-drying box 1 also includes a discharge port 14 and a discharge cover 15. The bottom of the air-drying box 1 has three discharge ports 14, and each of the three discharge ports 14 is equipped with a discharge cover 15.

[0027] In this embodiment, the external structure of the drying box 1 is a cuboid, and its interior is divided into three independent drying chambers 12. Each drying chamber 12 is cylindrical, and each chamber is designed to dry one type of goji berry without interference. A synchronous stirring device 2 penetrates all three drying chambers 12 and is connected via a sealed bearing. The synchronous stirring device 2 synchronously stirs the goji berries within the three drying chambers 12, accelerating the drying efficiency and improving drying uniformity. A feeding hopper 11 is installed at the top center of each of the three drying chambers 12. A grading and screening device 5 at the top of the feeding hopper 11 first sorts the goji berries according to their particle size. Goji berries are sieved into three sizes. Each size of goji berries is then fed into the drying chamber 12 of the drying box 1 through the feed hopper 11. During the drying process, the blower 4 is activated, and the blower 4 generates airflow that is conveyed to the three drying chambers 12 through the adjustable airflow conveyor 3. The airflow is adjusted according to the different sizes of goji berries to achieve simultaneous drying of multiple sizes. The bottom of the drying box 1 is equipped with three discharge ports 14 corresponding to the three drying chambers 12. Each discharge port 14 is equipped with a discharge cover 15. After the goji berries are dried, the discharge cover 15 is opened, and goji berries of different sizes are output from the corresponding discharge port 14.

[0028] Furthermore, the synchronous stirring device 2 includes a rotating motor 21 installed at one end of the outer side of the drying box 1. The rotating output end of the rotating motor 21 is fixedly connected to a rotating shaft 22. The rotating shaft 22 passes through the three drying chambers 12 of the drying box 1 and is rotatably connected to the drying box 1 through a sealed bearing. The stirring assembly 23 is fixedly installed at the positions of the rotating shaft 22 in the three drying chambers 12 respectively.

[0029] In this embodiment, the rotating shaft 22 extends laterally through the three drying chambers 12 and is rotatably mounted on the central axis of the drying box 1 via sealed bearings. Each drying chamber 12 has three sets of stirring components 23 mounted on the rotating shaft 22. The right end of the rotating shaft 22 is fixedly connected to the rotation output end of the rotating motor 21. When the rotating motor 21 is started, it drives the rotating shaft 22 to rotate clockwise. The rotating shaft 22 synchronously drives the stirring components 23 in the three drying chambers 12 to rotate at a uniform speed, so that the goji berries in the three drying chambers 12 are evenly turned over, ensuring that the goji berries are in full contact with the air and avoiding incomplete drying in some areas.

[0030] Furthermore, the stirring assembly 23 includes support rods 231 and arc-shaped shovels 232. Three sets of support rods 231 are installed in each of the drying chambers 12, with two support rods in each set. An arc-shaped shovel 232 is fixedly installed on each set of support rods 231, and the outer side of the arc-shaped shovel 232 is in contact with the inner wall of the drying chamber 12.

[0031] In this embodiment, three sets of support rods 231 are evenly spaced on the rotating shaft 22 inside the drying chamber 12. The two support rods 231 in each set are close to the two ends of the drying chamber 12. The length of the support rods 231 plus the thickness of the arc-shaped shovel 232 matches the radius of the drying chamber 12, and the curvature of the arc-shaped shovel 232 matches the curvature of the inner wall of the drying chamber 12. The outer side of the arc-shaped shovel 232 fits into the inner wall of the drying chamber 12 with a gap of ≤1mm. Thus, the rotating motor 21 provides power for stirring, which synchronously drives the stirring components 23 in the three drying chambers 12 to move. By adjusting the rotation, the stirring needs of goji berries with different humidity levels can be met. During the rotation, the arc-shaped shovel 232 can turn the goji berries at the bottom of the drying chamber 12 upward, breaking the piled-up state of the goji berries, thereby improving the uniformity of the drying of the goji berries.

[0032] Furthermore, the wind-adjustable conveying device 3 includes an air diffuser 33 fixedly installed in the three air inlets 13. Each air diffuser 33 is connected to the conveying pipe 31. One end of the conveying pipe 31 is fixedly connected to the air outlet of the fan 4. An adjusting valve 32 is installed at the connection position between the air diffuser 33 and the conveying pipe 31.

[0033] In this embodiment, the diffuser head 33 is trumpet-shaped and fixedly connected to the air inlet 13. The fan 4 provides a stable airflow for drying. The conveying pipe 31 delivers the airflow to each diffuser head 33. The diffuser head 33 diffuses the concentrated airflow from the conveying pipe 31 into a uniform airflow, increasing the contact area between the airflow and the goji berries. The regulating valve 32 is used to adjust the opening of the conveying pipe 31 and the diffuser head 33, controlling the airflow entering the drying chamber 12. This achieves independent control of the airflow in multiple chambers with one fan, thus enabling the adjustable airflow conveying device 3 to independently adjust the airflow, adapting to the drying needs of goji berries of different sizes. This avoids the problem of incomplete drying of large berries or excessive water loss of small berries due to uniform airflow, improving the accuracy of goji berry moisture content control and shortening the drying time.

[0034] Furthermore, the air diffuser 33 also includes an air inlet baffle 34, which is fixedly installed at one end of the air diffuser 33 near the air drying chamber 12.

[0035] In this embodiment, each of the three air diffusers 33 is fixedly installed with an air inlet baffle 34. The air inlet baffle 34 is a filter plate with fine through holes, which is used to prevent the goji berries from entering the air diffuser 33 during the turning process, and does not affect the airflow into the drying chamber 12.

[0036] Furthermore, the grading and screening device 5 includes a screening assembly fixedly installed by a support frame. A primary screening screen 52 is installed at the upper end of the screening assembly, and a secondary screening screen 53 is installed in the middle of the screening assembly. Both the primary screening screen 52 and the secondary screening screen 53 are driven to move by an electric telescopic rod 54 for screening. Guide plates 55 are installed at the lower ends of both the primary screening screen 52 and the secondary screening screen 53. A tertiary conveying hopper 56 is installed at the lower end of the screening assembly.

[0037] In this embodiment, the mesh diameter of the primary sieve 52 is larger than that of the secondary sieve 53. Two electric telescopic rods 54 are used to drive the primary sieve 52 and the secondary sieve 53 respectively. The primary sieve 52 is used to sieve out large-sized goji berries, which are then conveyed to the secondary sieve 53 via the guide plate 55 below. The secondary sieve 53 is used to sieve out medium-sized goji berries. Those passing through the secondary sieve 53 are small-sized goji berries. Small-sized goji berries are fed into the guide plate 55 at the lower end of the secondary screening screen 53, and then slide down to the tertiary conveyor hopper 56. The tertiary conveyor hopper 56 is fixedly supported by a support frame and is located at a section away from the blower 4. Small-sized goji berries are fed into the drying chamber 12 at the end furthest from the blower 4, medium-sized goji berries are fed into the drying chamber 12 in the middle position, and large-sized goji berries are fed into the drying chamber 12 at the end closest to the blower 4.

[0038] Furthermore, the screening installation assembly includes a fixed frame 511 fixedly installed on the top of the support frame. The fixed frame 511 has sliding grooves 513 on both sides inside. A slider 512 is slidably installed in the sliding grooves 513. The slider 512 is fixedly connected to the primary screening screen 52. A lifting and discharging plate 514 is slidably installed at the front end of the fixed frame 511.

[0039] In this embodiment, there are two fixed frames 511, which are matched in size with the primary sieve 52 and the secondary sieve 53, and are slidably connected to the sliding grooves 513 of the fixed frames 511 via sliders 512. The telescopic end of the electric telescopic rod 54 is fixedly welded to the end of the sieve, which can drive the sieve to reciprocate along the sliding grooves 513 to realize the sieving work of the primary sieve 52 and the secondary sieve 53. The lifting and discharging plate 514 is used to prevent the goji berries from slipping during sieving to avoid incomplete sieving. After sieving, the lifting and discharging plate 514 moves upward, and the goji berries on the sieve slide tilted down into the drying box 1.

[0040] Furthermore, the grading and screening device 5 also includes a first feeding cylinder 57 and a second feeding cylinder 58. The first feeding cylinder 57 is installed at the front end of the primary screening screen 52, and the second feeding cylinder 58 is installed at the front end of the secondary screening screen 53.

[0041] In this embodiment, the length of the first feeding cylinder 57 is matched with the height of the primary screening screen 52, and the height of the second feeding cylinder 58 is matched with the height of the secondary screening screen 53. The bottoms of the first feeding cylinder 57 and the second feeding cylinder 58 are located on the same horizontal line. The first feeding cylinder 57 and the second feeding cylinder 58 restrict the conveying path of the goji berries, ensuring that the goji berries are accurately conveyed into the drying box 1.

[0042] Using the multi-specification goji berry synchronous screening and air-drying equipment of this embodiment, the equipment is first debugged and raw materials are fed in. The grading and screening device 5 is started to grade the goji berries. The different specifications of goji berries after screening enter the corresponding air-drying chamber 12. Then the blower 4 and the rotating motor 21 are started. Synchronous and precise air-drying is achieved through the wind-adjustable conveying device 3 and the synchronous stirring device 2. Finally, the finished product is collected through the corresponding discharge port 14. The whole process is highly automated and easy to operate, which can greatly improve the processing efficiency and quality of goji berries.

[0043] This invention also includes an application process for simultaneous screening and air-drying of multi-specification wolfberries, comprising the following steps: S1: Adjust the lifting and discharging plate 514 and the discharge cover 15 to the closed state, and adjust the opening of the three regulating valves 32 according to the air-drying requirements of different specifications of goji berries; S2: Pour the mixed-size goji berry raw materials into the primary screening screen 52, start the electric telescopic rod 54 to drive the primary screening screen 52 to reciprocate. Large-size goji berries remain in the primary screening screen 52, the rest fall into the secondary screening screen 53 for screening to separate medium-size goji berries, and finally small-size goji berries fall into the tertiary conveyor hopper 56. S3: Small-sized goji berries enter the corresponding drying chamber 12 directly through the three-stage conveyor hopper 56, and then the lifting discharge plate 514 corresponding to the first-stage sieve 52 and the second-stage sieve 53 is opened. Large-sized goji berries enter the corresponding drying chamber 12 through the first feeding cylinder 57 and medium-sized goji berries through the second feeding cylinder 58. S4: Start the fan 4 and the rotating motor 21. The airflow enters each of the drying chambers 12 through the regulating valve 32 and the air diffuser 33. The rotating shaft 22 drives the arc-shaped shovel 232 to turn the goji berries, so as to achieve synchronous and uniform air drying. S5: After air drying is completed, turn off the equipment, open the corresponding discharge cover 15, and collect the air-dried goji berries of different specifications.

[0044] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A multi-specification goji berry simultaneous screening and air-drying device, characterized in that, The device includes a drying box, which is equipped with a synchronous stirring device. The drying box is divided into three drying chambers, each with an air inlet on its rear side. The air inlets are connected to an adjustable wind-powered conveying device, one end of which is connected to a fan. The top of the drying box has three feeding hoppers, and the upper end of each feeding hopper is equipped with a grading and screening device, which is fixedly installed by a support frame.

2. The multi-specification wolfberry simultaneous screening and air-drying equipment as described in claim 1, characterized in that, The synchronous stirring device includes a rotating motor installed at one end of the outside of the drying box. The rotating output end of the rotating motor is fixedly connected to a rotating shaft. The rotating shaft passes through the three drying chambers of the drying box and is rotatably connected to the drying box through a sealed bearing. The stirring assembly is fixedly installed at the position of the rotating shaft in each of the three drying chambers.

3. The multi-specification wolfberry simultaneous screening and air-drying equipment as described in claim 2, characterized in that, The stirring assembly includes support rods and arc-shaped shovels. Three sets of support rods are installed in each drying chamber, with two support rods in each set. An arc-shaped shovel is fixedly installed on each set of support rods, and the outer side of the arc-shaped shovel is in contact with the inner wall of the drying chamber.

4. The multi-specification wolfberry simultaneous screening and air-drying equipment as described in claim 1, characterized in that, The wind-adjustable conveying device includes an air diffuser fixedly installed at the three air inlets. Each air diffuser is connected to the conveying pipe. One end of the conveying pipe is fixedly connected to the air outlet of the fan. An adjustment valve is installed at the connection position between the air diffuser and the conveying pipe.

5. The multi-specification wolfberry simultaneous screening and air-drying equipment as described in claim 4, characterized in that, The air diffuser also includes an air inlet baffle, which is fixedly installed at one end of the air diffuser near the air drying chamber.

6. The multi-specification wolfberry simultaneous screening and air-drying equipment as described in claim 1, characterized in that, The grading and screening device includes a screening assembly fixedly installed by a support frame. A primary screening screen is installed at the upper end of the screening assembly, and a secondary screening screen is installed in the middle of the screening assembly. Both the primary and secondary screening screens are driven to move by an electric telescopic rod for screening. Guide plates are installed at the lower ends of both the primary and secondary screening screens, and a tertiary conveying hopper is installed at the lower end of the screening assembly.

7. The multi-specification wolfberry simultaneous screening and air-drying equipment as described in claim 6, characterized in that, The screening assembly includes a fixed frame that is fixedly installed on the top of the support frame. The fixed frame has grooves on both sides inside, and a slider is slidably installed in the groove. The slider is fixedly connected to the primary screening screen. A lifting and discharging plate is slidably installed at the front end of the fixed frame.

8. The multi-specification wolfberry simultaneous screening and air-drying equipment as described in claim 6, characterized in that, The grading and screening device further includes a first feeding cylinder and a second feeding cylinder. The first feeding cylinder is installed at the front end of the primary screening screen, and the second feeding cylinder is installed at the front end of the secondary screening screen.

9. The multi-specification wolfberry simultaneous screening and air-drying equipment as described in claim 1, characterized in that, The drying box also includes a discharge port and a discharge cover. The bottom of the drying box is provided with three discharge ports, and each of the three discharge ports is equipped with a discharge cover.

10. This invention also includes an application process for simultaneous screening and air-drying of multi-specification wolfberries, comprising the following steps: Adjust the lifting and unloading plate and the discharge cover to the closed state, and adjust the opening of the three regulating valves according to the air-drying requirements of different specifications of goji berries; The mixed-size goji berry raw materials are poured into the primary screening screen. The electric telescopic rod is started to drive the primary screening screen to reciprocate. Large-size goji berries remain in the primary screening screen, the rest fall into the secondary screening screen for screening to separate medium-size goji berries, and finally small-size goji berries fall into the tertiary conveyor hopper. Small-sized goji berries are directly fed into the corresponding drying chamber via the three-stage conveyor bucket. Then, the lifting and discharging plates corresponding to the first-stage and second-stage sieves are opened. Large-sized goji berries are fed into the corresponding drying chamber via the first feeding cylinder and medium-sized goji berries are fed into the corresponding drying chamber via the second feeding cylinder. Start the fan and the rotating motor, and the airflow enters each of the drying chambers through the regulating valve and the air diffuser. The rotating shaft drives the arc-shaped shovel to turn the goji berries, so as to achieve synchronous and uniform air drying. After air drying is complete, turn off the equipment, open the corresponding discharge cover, and collect the air-dried goji berries of different sizes.

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