Synchronous adjustable screening machine
By installing spray and air blowing devices on the transmission belt, the fruit is washed and dried, and then screened using adjustable screening rollers. This solves the problem of inaccurate fruit screening, achieving efficient and accurate fruit screening and cleaning, and improving economic benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG DACHUANG AUTOMATION CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-19
AI Technical Summary
Existing sorting machines have difficulty accurately sorting fruits of different sizes, especially due to interference from mud, sand, and leaves on the fruit surface, which leads to inaccurate sorting and requires additional washing.
A synchronously adjustable screening machine was designed, which uses a spraying device and a blowing device mounted on a transmission belt to clean and dry the fruit. After the fruit is cleaned, it is screened through an adjustable screening roller to ensure the accuracy and efficiency of fruit size screening.
This technology enables efficient cleaning and sorting of fruits, improves the accuracy and efficiency of sorting, reduces manual labor, and enhances economic benefits.
Smart Images
Figure CN224253404U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening equipment technology, specifically a synchronously adjustable screening machine. Background Technology
[0002] In the fruit production and sales process, different fruit sizes result in different economic benefits. Therefore, it is necessary to separate fruits of different sizes. Most existing screening machines use rollers or screening tubes, with different diameter screening holes on the rollers or different gaps on the screening tubes to screen the material. However, in fruit screening, because fruits often contain mud, sand, branches, leaves, and stems during harvesting, they need to be washed again after screening. The branches and leaves inside the fruit can change the diameter of the fruit during screening, making it difficult for the screening device to accurately screen according to the size of the fruit itself. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a synchronously adjustable screening machine that can wash and feed fruits.
[0004] To solve the above-mentioned technical problems, this utility model includes a frame, characterized in that: a screening device with adjustable screening size is installed on the frame; a screening device capable of screening fruits of different sizes is installed on the frame; the feeding end of the screening device is provided with a fruit loading device to transport the fruits into the screening device; the fruit loading device includes a transmission belt that rotates cyclically on the frame; the transmission belt is arranged laterally; the transmission belt includes multiple parallel rollers; and the transmission belt is provided with a spray device for cleaning the fruits on the transmission belt and a blower device for drying the cleaned fruits.
[0005] With the above structure, the fruit is placed in the transmission belt of the fruit loading device. The transmission belt is set horizontally, driving the fruit to move laterally. The fruit is transported to the inlet of the screening device via the transmission belt. When the fruit passes through the spray device on the transmission belt, the spray device washes the fruit placed on the transmission belt. After washing the fruit, the mud, sand, branches, leaves and fruit stems adhering to the fruit are sprayed off by the spray device and fall through the gaps between the rollers. In the subsequent screening process, branches and leaves will not interfere with the screening of fruit size, avoiding inaccurate screening. Then, the fruit is dried by the blowing device to avoid water stains causing damage to the fruit and to ensure the quality of the fruit. It is then sent to the screening device, where it is sorted according to different sizes. The fruit is then directly loaded onto the fruit loading device, which improves efficiency while ensuring the efficiency and accuracy of screening.
[0006] The transmission belt rollers have toothed chains at both ends. The frame is equipped with a drive gear set and a driven gear set that mesh with the toothed chains. Each drive gear set includes a main shaft positioned at the front and rear, and two gears mounted on the shafts that mesh with the toothed chains at both ends of the rollers. The drive gear set is driven by a motor to rotate the transmission belt. The driven gear set determines the height position of the rollers. The end of the transmission belt closer to the screening device is higher than the other end. The meshing of the toothed chains and gear sets, with each gear set including two gears, ensures consistent rotation speeds at both ends of the rollers, thus guaranteeing smooth roller movement, uniform transmission belt movement, stable transport, and equal time for the fruit to pass through the spray and blowing devices, ensuring the efficiency of these devices. By adjusting the height of adjacent gear sets, the angle of the transmission belt can be changed during transport, thus altering the fruit's height. This ensures stable transport while simultaneously loading the fruit, saving labor and improving economic efficiency.
[0007] The spraying device includes a spraying bracket mounted on a frame. A spraying pipe connected to a water pump is installed inside the spraying bracket. The spraying pipe has spray holes and is positioned front to back. The spraying bracket supports the spraying pipe, ensuring its proper front-to-back arrangement and thus guaranteeing the spraying range and ensuring that all fruit on the conveyor belt is sprayed, thereby ensuring efficient rinsing. Water or rinsing liquid is delivered to the spraying pipe by the water pump and sprayed downwards through the spray holes, effectively cleaning the fruit and ensuring that all fruit placed on the conveyor belt is cleaned, thus guaranteeing cleaning efficiency.
[0008] The spray nozzles are provided in multiple circular through holes, which can increase the spray pressure and ensure the spraying effect.
[0009] The spray holes are elongated holes arranged at the front and back, which allows for more even spraying and ensures cleaning efficiency.
[0010] A detachable screen is installed on the frame. The screen is located between the annular transmission belts and below the spraying device. Dirt and leaves sprayed down by the spraying device fall through the gaps between the rollers onto the screen. The water continues to flow down through the gaps in the screen, separating the wastewater from the leaves. The screen prevents larger objects such as leaves from blocking the transmission belt moving downwards, ensuring the smooth operation of the transmission belt. At the same time, the screen is detachable, which facilitates cleaning and replacement. Different screens can be used for different fruits, thereby blocking leaves of different sizes and improving the adaptability and efficiency of the equipment.
[0011] The screening device includes a transversely arranged conveyor belt with multiple screening rollers inside. The frame is equipped with multiple adjustment devices that can adjust the gap between the screening rollers. These adjustment devices can be adjusted synchronously forward and backward. The screening device includes a conveyor belt that transports the fruit laterally and filters it through the gap between the screening rollers. When a screening roller passes the adjustment device, the gap changes, causing fruits smaller than the gap to fall through. By using multiple adjustment devices, fruits of different sizes can be screened out one by one, improving screening efficiency.
[0012] In summary, this utility model has the advantages of improving economic benefits, saving labor, increasing efficiency, and having strong applicability. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 A schematic diagram of the structure for adjusting the screening rollers in the adjustment device;
[0015] Figure 3 This is a schematic diagram of the fruit-feeding device;
[0016] Figure 4 for Figure 3 A top-down structural diagram (fan not shown). Detailed Implementation
[0017] like Figure 1 , 2 As shown, this utility model is a synchronously adjustable screening machine, which includes a frame 1, a screening device 2, and a fruit loading device 3. For ease of description, let's assume... Figure 1 Left is left, right is right. The direction perpendicular to the paper inwards is front, the direction perpendicular to the paper outwards is back. The screening device 2 includes an inlet and an outlet. One end of the inlet of the screening device 2 is equipped with a fruit-loading device 3 that transports fruit to the screening machine. The fruit-loading device 3 includes a conveyor belt that rotates continuously on the frame 1. The frame 1 is equipped with a spray device 32 that washes the fruit on the conveyor belt and a blower device 33 that dries the fruit on the conveyor belt. Through the fruit-loading device 3, mud, dust, and some branches and leaves are washed away from the fruit. After washing, the fruit is dried by the blower device 33 and then transported to the screening device 2 via the conveyor belt. The screening device 2 sorts and collects the fruit according to different sizes, achieving an automated process. Pre-washing by the fruit-loading device 3 prevents branches and leaves from entering the screening device 2, affecting the accuracy of the screening and ensuring efficiency. Furthermore, it eliminates the need for post-screening fruit washing, saving processes and manpower.
[0018] like Figure 1 , 2As shown, the screening device 2 includes a transversely arranged conveyor belt 21, within which multiple screening rollers 22 are installed. The frame 1 is equipped with multiple adjustment devices 23 capable of adjusting the gap between the screening rollers 22. These adjustment devices 23 can be adjusted synchronously forward and backward. The screening device 2 includes the conveyor belt 21, which transports the fruit laterally and filters it through the gap between the screening rollers 22. Guide plates are provided at both ends of the screening rollers 22 for them to slide up and down. The adjustment devices 23 can change the vertical position of the screening rollers 22 within the guide plates, thereby changing the gap between adjacent screening rollers 22. When a screening roller 22 passes the adjustment device 23, the gap between the screening rollers 22 changes, allowing fruits smaller than the gap to fall through. Through the multiple adjustment devices 23, fruits of different sizes can be screened out one by one, improving screening efficiency. The adjustment devices 23 are located on both sides of the screening rollers 22 and correspond to each other. Each of the front and rear screening devices 2 is equipped with a shaft, on which gears are mounted. By mounting racks on the front and rear gears, the gears mesh with the racks, enabling the synchronous rotation of the front and rear adjustment devices 23, thereby achieving synchronous adjustment of the gap between the screening rollers 22.
[0019] Figure 1-4As shown, in this embodiment, the feed inlet of the screening device 2 is on the left side, and the fruit loading device 3 is located on the left side of the screening device 2. A guide trough 34 is provided at the left end of the fruit loading device 3. The guide trough 34 is mounted on the frame 1 and includes an inclined guide base plate 341 and guide baffles 342 located on the front and rear sides of the guide base plate 341. The guide base plate 341 gradually decreases in height from left to right, and its right end is located above the left side of the transmission belt 31. When fruit is placed in the guide trough 34, it rolls due to gravity. The guide baffles 342 are located on the front and rear sides to prevent fruit from falling off and ensure that the fruit rolls along the guide base plate 341 from left to right onto the transmission belt 31. The transmission belt 31 includes multiple rollers 311, with toothed chains at both ends. The transmission belt 31 rotates cyclically, and multiple gear sets capable of meshing with the toothed chains are mounted on the frame 1. The gear set includes two gears symmetrically arranged front and rear, connected by a shaft. Each gear set meshes with both ends of the toothed chain, ensuring stable operation of the roller 311. It includes a driving gear set and a driven gear set. The driving gear set is driven by a motor, rotating the transmission belt 31, while the driven gear set determines the height of the roller 311. In this embodiment, the driving gear set is located on the far right and is driven by a motor, rotating the transmission belt 31. The height of the transmission belt 31 is changed by adjusting the position of the driven gear set, gradually increasing the height of the upper end of the transmission belt 31. The height of the right side of the transmission belt 31 is higher than that of the left side, enabling the fruit to rise and be transported. The fruit is placed on the transmission belt 31 and moved to the right by it. As the height of the transmission belt 31 gradually increases, so does the height of the fruit. When transported to the far right, the height of the transmission belt 31 is higher than the inlet of the screening device 2, at which point the fruit falls onto the screening device 2, completing the entire process of loading the fruit onto the loading device 3. The driven gear set located on the lower side meshes with the transmission belt 31 on the lower side, maintaining the tension of the transmission belt 31.
[0020] Figure 1-4As shown, the transmission belt 31 includes a spraying zone, a climbing zone, and a discharge zone from left to right. The spraying zone and discharge zone are positioned horizontally, while the climbing zone is inclined. The discharge zone is higher than the spraying zone. A spraying device 32 is installed on the transmission belt 31. The spraying device 32 is located in the spraying zone of the transmission belt 31. The spraying device 32 includes a spraying bracket, on which a spraying pipe 321 is mounted. The spraying pipe 321 is positioned front to back, and has downward-facing spray nozzles. The spraying bracket fixes the position of the spraying pipe 321, suspending it above the transmission belt 31. Water sprayed from the spray nozzles washes the fruit on the transmission belt 31 downwards, cleaning it. After washing, wastewater and impurities flow down the gaps in the rollers 311 of the transmission belt 31, preventing accumulation on the belt. A removable and replaceable screen 322 is provided below the spray device 32. The screen 322 is located between the annular transmission belts 31, directly below the spray device 32. The screen 322 has multiple gap holes through which the cleaning liquid is sprayed downwards. In this embodiment, there are two spray pipes 321, which are parallel to each other. The gap holes are circular through holes installed at the bottom of the spray pipes 321. The multiple gap holes are evenly distributed to ensure uniform spraying and cleaning of the fruit on the transmission belt 31. In other embodiments, the gap holes can also be elongated through holes, which provide more uniform spraying. Alternatively, the gap holes can be of other shapes, all of which can achieve the goal of spraying the fruit. In this embodiment, two spray pipes 321 are connected to a spray input pipe at both ends. The spray input pipe is connected to a water pump, which pumps liquid into the spray device 32. The cleaning liquid enters the spray pipes 321 through the spray input pipe and is sprayed onto the fruit through the gap holes, thus cleaning the fruit. A water receiving trough 35 is provided below the frame 1, located below the screen 322. Both the screen 322 and the water receiving trough 35 are placed on the left side of the washing device. After the fruit is placed on the upper conveyor belt 31 via the guide trough 34, the dust and debris attached to the fruit fall down through the gaps between the rollers 311 onto the screen 322. Then, the conveyor belt 31 moves the fruit to the right, passing through the spray device 32. The spraying device 32 sprays water onto the fruit, washing away the mud and sand. The water flow carries the mud, sand, and some unwanted branches and leaves as it falls from the roller 311. The branches and leaves are blocked by the screen 322, while the water and other liquids fall along the screen 322, pass through the conveyor belt 31 that wraps around the lower end, and fall into the water receiving tank 35. The screen 322 blocks the branches and leaves, preventing them and other impurities from falling onto the lower conveyor belt 31 and obstructing the roller 311. The left and right side walls of the screen 322 are provided with guide grooves in the front-to-back direction, and the frame 1 is provided with guide blocks in the front-to-back direction. The guide grooves can slide on the guide blocks. The sliding between the guide grooves and guide blocks allows the screen 322 to slide easily on the frame 1, facilitating the removal and replacement of the screen 322, and thus facilitating the cleaning and replacement of the screen 322, improving the spraying efficiency.
[0021] Figure 1-4 As shown, a blower 33 is located on the right side of the spray device 32. The blower 33 is situated above the climbing section of the conveyor belt 31. The blower 33 dries the fruit, and the tilt angle of the climbing device makes it easier for the air to reach the lower part of the fruit, improving drying efficiency and ensuring drying quality. The blower 33 includes a blower bracket 331, located on the right side of the spray device 32 and above the conveyor belt 31. Two fans are mounted on the blower bracket 331, with their outlets facing outwards from the conveyor belt 31. When the conveyor belt 31 moves the fruit to the blower 33, the fans dry the water stains on the fruit, preventing residue and minimizing their impact on the fruit.
Claims
1. A synchronized adjustable screening machine comprising a frame (1), characterized by: The frame (1) is equipped with a screening device (2) that can adjust the screening size. The frame (1) is equipped with a screening device (2) that can screen fruits of different sizes. The feeding end of the screening device (2) is equipped with a fruit loading device (3) that transports the fruit into the screening device (2). The fruit loading device (3) includes a transmission belt (31) that rotates in a circular motion on the frame (1). The transmission belt (31) is arranged horizontally. The transmission belt (31) includes multiple rollers (311) arranged in parallel front and rear. The transmission belt (31) is equipped with a spray device (32) that can clean the fruit on the transmission belt (31) and a blower device (33) that dries the cleaned fruit.
2. The synchronized adjustable screening machine of claim 1, wherein: The roller (311) of the transmission belt (31) is provided with toothed chains at both ends. The frame (1) is provided with a drive gear set and a driven gear set that mesh with the toothed chains. The drive gear set and the driven gear set each include a main shaft set at the front and rear and two gears mounted on the shaft that mesh with the toothed chains at both ends of the roller (311). The drive gear set is driven by a motor to rotate the transmission belt (31). The driven gear set determines the height of the roller (311). The end of the transmission belt (31) closer to the screening device (2) is higher than the other end.
3. The synchronized adjustable screening machine of claim 1, wherein: The spraying device (32) includes a spraying bracket installed on the frame (1), and a spraying pipe (321) connected to a water pump is installed in the spraying bracket. The spraying pipe (321) is provided with spraying holes and is arranged in front and behind.
4. The synchronized adjustable screening machine of claim 3, wherein: The spray hole is provided in multiple ways, and the multiple spray holes are circular through holes.
5. The synchronized adjustable screening machine of claim 3, wherein: The spray holes are elongated holes arranged at the front and back.
6. The synchronized adjustable screening machine of claim 1, wherein: A detachable screen (322) is installed on the frame (1), the screen (322) being located between the annular transmission belts (31) and below the spray device (32).
7. The synchronized adjustable screening machine of claim 1, wherein: The screening device (2) includes a transversely arranged conveyor belt (21), and multiple screening rollers (22) are provided in the conveyor belt (21). Multiple adjustment devices (23) are provided on the frame (1) to adjust the gap between the screening rollers (22). The adjustment devices (23) can be adjusted synchronously back and forth.