Hawthorn grading and screening equipment

Abstract

The invention discloses hawthorn grading and screening equipment, and relates to the technical field of hawthorn screening, the hawthorn grading and screening equipment comprises a base and a mounting frame, a plurality of supporting stand columns are fixedly mounted between the base and the mounting frame, and an adjustable sorting assembly, a push-pull unit, a driving assembly and an auxiliary cleaning assembly are mounted on the mounting frame; the adjustable sorting assembly comprises a pair of long circular groove frames fixed to a mounting frame, mounting connecting rods are fixed to the two sides of the mounting frame, the end of each mounting connecting rod is connected with a set of crossed connecting rods through a movable shaft, and a connecting shaft is rotationally mounted at the butt joint position of each set of crossed connecting rods. The distances between the four groups of conveying cavity rollers can be synchronously adjusted. And meanwhile, the initial intervals of the four groups of conveying cavity rollers are gradually increased from narrow to wide, the gradually increased relation is still kept after adjustment, multiple grading of screening of small specifications, screening of medium specifications and final conveying of large specifications can be completed on the hawthorns, and compared with existing single-time screening equipment, the screening precision is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of hawthorn screening technology, and in particular to a hawthorn grading and screening device. Background Technology

[0002] Hawthorn, a common fruit and food processing ingredient, often needs to be graded and sorted by fruit size after harvesting to meet the processing needs of different products such as hawthorn slices, dried fruit, and canned goods. Traditional hawthorn sorting mostly uses manual sorting or mechanical devices with fixed spacing, such as drum screens and vibrating screens. These devices have simple structures, but their sorting accuracy is limited. They can usually only achieve sorting of a single or limited number of sizes, making it difficult to adapt to the size differences of different varieties and batches of hawthorn. The sorting efficiency is low and the scope of application is narrow.

[0003] While some existing multi-stage screening equipment possesses certain sorting capabilities, its screening gaps are mostly fixed, making it impossible to flexibly adjust them according to the actual size of the hawthorns. This deficiency results in poor adaptability to hawthorns of different sizes, hindering accurate multiple grading and severely impacting sorting efficiency and processing quality. Furthermore, if washing is required simultaneously during screening, existing equipment typically relies on independent spray systems. The lack of effective linkage between water supply control and screening conditions leads to complex operation, mismatch between water pressure and screening conditions, and, especially, inability to adjust the washing water volume synchronously when screening sizes change. This results in incomplete cleaning or water waste, further limiting the equipment's practicality and economic efficiency.

[0004] Therefore, there is an urgent need in the existing technology for a hawthorn screening device with adjustable sorting spacing, capable of multi-level precise grading, and able to work in conjunction with a cleaning system, in order to improve sorting accuracy and processing efficiency and meet the production process requirements of the modern food processing industry. Summary of the Invention

[0005] The purpose of this invention is to provide a hawthorn grading and screening device to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: a hawthorn grading and screening device, comprising a base and an installation frame, wherein multiple supporting columns are fixedly installed between the base and the installation frame, and an adjustable sorting component, a push-pull unit, a drive component and an auxiliary cleaning component are installed on the installation frame; The adjustable sorting assembly includes a pair of elongated cylindrical groove frames fixed on a mounting frame. Mounting rods are fixed to both sides of the mounting frame. Each end of the mounting rods is connected to a set of cross rods via a movable shaft. A connecting shaft is rotatably mounted at the joint of each set of cross rods. An elongated cylindrical through-groove block and an elongated cylindrical groove box are respectively provided on the outer sides of the two sets of cross rods. Both the elongated cylindrical through-groove block and the elongated cylindrical groove box are fixedly connected to adjacent connecting shafts. Each elongated cylindrical through-groove block and elongated cylindrical groove box corresponds one-to-one. Matching conveying rollers are movably installed between the elongated cylindrical through-groove block and the elongated cylindrical groove box. A total of four sets of conveying rollers are provided, with the spacing between each set of conveying rollers increasing progressively. Each set of cross rods has four different specifications, with each specification corresponding to the spacing between the conveying rollers. Multiple conveying rollers are slidably connected to the elongated cylindrical groove frames. The push-pull unit includes a pair of electrically operated telescopic rods fixed to two of the support columns; The drive assembly is used to drive multiple conveyor rollers to rotate.

[0007] Preferably, the auxiliary cleaning assembly includes a liquid supply main pipe, and multiple support pillars are fixedly installed on one side of the base. The top ends of the multiple support pillars are fixedly connected to the bottom side of the liquid supply main pipe. One end of the liquid supply main pipe is fixedly connected to a conveying pipe. A threaded valve is fixedly installed on the conveying pipe. A toothed column is fixed at the end of the threaded valve. The conveying pipe is connected to an external water supply system. Each conveying chamber roller is provided with a liquid outlet hole. Limiting supports are movably inserted through multiple elongated cylindrical through-slot blocks and multiple elongated cylindrical slot boxes. The limiting supports are fixedly installed on the elongated cylindrical slot frames.

[0008] Preferably, the push-pull unit includes a folded rod fixedly installed at the end of the electric telescopic rod, the end of the folded rod being rotatably connected to the end of the cross link via a movable shaft, and a rack being meshed on the toothed column, with the rack being fixedly connected to the adjacent folded rod.

[0009] Preferably, the drive assembly includes an extension plate fixedly mounted on one side of the mounting frame, and a second drive shaft and a first drive shaft are rotatably mounted on the extension plate and the mounting frame, respectively. A toothed belt is sleeved on both the second drive shaft and the first drive shaft. A gear is fixedly mounted on one end of each conveying chamber roller, and the gear meshes with the toothed belt.

[0010] Preferably, a connecting bucket is provided on one side of the liquid supply main pipe, which is rotatably connected to one end of the conveying chamber roller via a sealed bearing. A corrugated hose is fixedly connected between the connecting bucket and the liquid supply main pipe. A pair of connecting short columns are fixed on one side of each connecting bucket, and the other end of the connecting short columns is fixedly installed on an elongated trough box.

[0011] Preferably, a pair of brackets are fixed on one side of the mounting frame, and a pair of support shafts are rotatably mounted on the two brackets. A buffer belt is sleeved on both support shafts. The buffer belt is made of rubber. A drive motor is fixedly mounted on one of the brackets. A transmission belt is sleeved on the output shaft of the drive motor and one of the support shafts. A transmission belt is sleeved on the other support shaft and the transmission shaft. A transmission belt is sleeved on both support shafts.

[0012] Preferably, an elongated support frame is fixedly installed on one side of the mounting frame, and the toothed belt slides in cooperation with the elongated support frame.

[0013] Preferably, limit baffles are fixedly installed on opposite sides of both of the two elongated cylindrical slot frames.

[0014] Preferably, a receiving plate is fixedly installed between the mounting frame and multiple supporting columns, and a distributing hopper plate is fixedly installed on the receiving plate.

[0015] Preferably, the inner wall of each conveying chamber roller is provided with a plurality of convex grooves that are staggered with the liquid outlet holes, and each convex groove is sealed and slidably installed with a movable convex piece, and a pair of connecting springs are fixedly connected between the movable convex piece and the convex groove.

[0016] The present invention provides an improved hawthorn grading and screening device, which has the following improvements and advantages compared with the prior art: Firstly, existing technologies mostly employ fixed-spacing designs, limiting the selection of hawthorns to a limited number of sizes and thus restricting their applicability. This application, however, utilizes an electric telescopic rod to extend and retract, causing a folded rod to rotate around a movable shaft at the end of the mounting link. This, in turn, drives the connecting shaft at the joint of the cross-links to move. Since the elongated cylindrical slot block, elongated cylindrical slot box, and connecting shaft are fixed, and the conveying rollers are movably installed between them and slidably connected to the elongated cylindrical slot frame with a limiting support to ensure stable sliding, the synchronous adjustment of the spacing between the four sets of conveying rollers is ultimately achieved. Furthermore, the initial spacing of the four sets of conveying rollers increases from narrow to wide, maintaining this increasing relationship after adjustment. This allows for multiple grading of hawthorns, from small sizes to medium sizes, and finally to large sizes, significantly improving selection accuracy compared to existing single-stage selection equipment. Secondly, existing technologies require separate control of the water supply system for cleaning hawthorns, leading to a problem of "asynchronous adjustment between spacing and cleaning." For example, insufficient water supply when the spacing is increased makes it impossible to clean large-sized hawthorns. In this application, however, the spacing between the conveying rollers increases when the electric telescopic rod extends, adapting to larger hawthorns. The folding rod synchronously drives the rack to move, and the rack meshes with the toothed column to increase the opening of the threaded valve. This increases the water supply from the main pipe to the conveying rollers through the corrugated hose and connecting bucket, and the liquid output from the outlet increases simultaneously. Conversely, when the electric telescopic rod shortens, the time interval decreases, the opening of the threaded valve decreases, and the water supply decreases. This "spacing adjustment-water supply linkage" design can match the cleaning needs of different hawthorn sizes without additional operation, while the water flow from the outlet also improves the smoothness of the conveying process. Attached Figure Description

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

[0018] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overall second-view three-dimensional structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the mounting frame and receiving plate of the present invention; Figure 4 This is a three-dimensional structural diagram of the bearing shaft and cross linkage of the present invention; Figure 5 This is a three-dimensional structural diagram of the conveying cavity roller of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of a partial explosion structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the planar structure of the conveying cavity roller in Embodiment 2 of the present invention.

[0019] Figure label: 1. Base; 101. Support column; 102. Mounting frame; 103. Support column; 2. Receiving plate; 201. Distributing hopper plate; 202. Bracket one; 203. Support shaft; 3. Conveying chamber roller; 301. Liquid outlet; 302. Convex groove; 303. Movable convex piece; 304. Connecting spring; 4. Buffer belt; 5. Liquid supply main pipe; 501. Corrugated hose; 502. Connecting hopper; 503. Connecting short column; 504. Conveying pipe; 505. Threaded valve; 506. Gear 6. Column; 7. Cross link; 8. Gear; 9. Drive belt 1; 10. Drive belt 2; 11. Drive motor; 12. Drive belt 3; 13. Long oval slotted frame; 14. Limiting baffle; 15. Limiting support; 16. Electric telescopic rod; 17. Folded rod; 18. Rack; 19. Long oval through slotted block; 10. Long oval slotted box; 10. Toothed belt; 11. Drive shaft 1; 12. Drive shaft 2; 13. Extension plate; 14. Long oval support; 15. Mounting link. Detailed Implementation

[0020] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides an improved hawthorn grading and screening device. The technical solution of this invention is as follows:

[0022] Example 1, as Figures 1 to 8 As shown, this embodiment of the invention provides a hawthorn grading and screening device, including a base 1 and an installation frame 102. A plurality of support columns 101 are fixedly installed between the base 1 and the installation frame 102. An adjustable sorting component, a push-pull unit, a drive component and an auxiliary cleaning component are installed on the installation frame 102. The adjustable sorting assembly includes a pair of elongated cylindrical groove frames 9 fixed on the mounting frame 102. Mounting rods 17 are fixed on both sides of the mounting frame 102. The ends of the mounting rods 17 are connected to a set of cross rods 6 via movable shafts. A connecting shaft is rotatably installed at the joint of each set of cross rods 6. An elongated cylindrical through-groove block 13 and an elongated cylindrical groove box 14 are respectively provided on the outer side of the two sets of cross rods 6. The elongated cylindrical through-groove block 13 and the elongated cylindrical groove box 14 are fixedly connected to the adjacent connecting shafts. Each elongated cylindrical through-groove block 13 and the elongated cylindrical groove box 14 correspond one-to-one. A matching conveying cavity roller 3 is movably installed between the elongated cylindrical through-groove block 13 and the elongated cylindrical groove box 14. There are four sets of conveying cavity rollers 3 in total. The spacing between each set of conveying cavity rollers 3 increases. There are four specifications for each set of cross rods 6. Each specification of the cross rods 6 corresponds to the spacing between the conveying cavity rollers 3. Multiple conveying cavity rollers 3 are slidably connected to the elongated cylindrical groove frame 9. The push-pull unit includes a pair of electric telescopic rods 10 fixed on two of the support columns 101. With the above structure, the electric telescopic rods 10 can push and pull the two sets of cross linkages 6, drive the elongated through-groove block 13 and the elongated groove box 14 to move accordingly, and finally realize the adjustment of the distance between the conveying chamber rollers 3, making the device more flexible and suitable for multiple sorting of hawthorns of various specifications.

[0023] The drive assembly is used to drive multiple conveyor rollers 3 to rotate.

[0024] Furthermore, the auxiliary cleaning assembly includes a liquid supply main pipe 5. Multiple support columns 103 are fixedly installed on one side of the base 1. The top ends of the multiple support columns 103 are fixedly connected to the bottom side of the liquid supply main pipe 5. One end of the liquid supply main pipe 5 is fixedly connected to a conveying pipe 504. A threaded valve 505 is fixedly installed on the conveying pipe 504. A toothed column 506 is fixed to the end of the threaded valve 505. The conveying pipe 504 is connected to an external water supply system. Each conveying chamber roller 3 is provided with a liquid outlet hole 301. Multiple elongated through-slot blocks 13 and multiple elongated slot boxes 14 are respectively movably connected to a limiting support 902. The limiting support 902 is fixedly installed on the elongated slot frame 9. Through the above structure, the multiple elongated through-slot blocks 13 and elongated slot boxes 14 serve as transmission components for the conveying chamber roller 3. At the same time, they cooperate with the elongated slot frame 9 to achieve stable driving of the conveying chamber roller 3. The liquid supply main pipe 5 is configured to selectively supply liquid to multiple conveying chamber rollers 3 via an external water supply system. When the liquid is supplied, the liquid outlet hole 301 on the conveying chamber roller 3 can discharge liquid, thereby assisting in the cleaning of hawthorn and improving the conveying capacity of hawthorn.

[0025] As a further embodiment of the present invention, the push-pull unit includes a folded rod 11 fixedly installed at the end of the electric telescopic rod 10. The end of the folded rod 11 is rotatably connected to the end of the cross link 6 via a movable shaft. A rack 12 is meshed on the toothed column 506, and the rack 12 is fixedly connected to the adjacent folded rod 11. When the electric telescopic rod 10 is running, it works with the folded rod 11 to drive the cross link 6. At the same time, when the electric telescopic rod 10 extends, the spacing between the conveying chamber rollers 3 increases. At this time, the folded rod 11 drives the rack 12 to move, and uses the toothed column 506 to drive the threaded valve 505, thereby increasing its flow rate.

[0026] Furthermore, the drive assembly includes an extension plate 153 fixedly mounted on one side of the mounting frame 102, and a second drive shaft 152 and a first drive shaft 151 are rotatably mounted on the extension plate 153 and the mounting frame 102, respectively. A toothed belt 15 is sleeved on both the second drive shaft 152 and the first drive shaft 151. A gear 7 is fixedly mounted on one end of each conveying chamber roller 3, and the gear 7 meshes with the toothed belt 15. Through the above structure, when the toothed belt 15 moves, it can cooperate with the gear 7 to drive the corresponding conveying chamber roller 3 to rotate, thereby realizing the conveying of hawthorns, and using the change in the spacing between the conveying chamber rollers 3 to realize the grading and screening of hawthorns.

[0027] Furthermore, a connecting bucket 502 is provided on one side of the liquid supply main pipe 5 and is rotatably connected to one end of the conveying chamber roller 3 via a sealed bearing. A corrugated hose 501 is fixedly connected between the connecting bucket 502 and the liquid supply main pipe 5. A pair of connecting short columns 503 are fixed on one side of the connecting bucket 502, and the other end of the connecting short columns 503 is fixedly installed on the elongated trough box 14. With the above structure, water can be introduced into the interior of the conveying chamber roller 3 while the conveying chamber roller 3 is moving.

[0028] Furthermore, a pair of brackets 202 are fixed to one side of the mounting frame 102. A pair of support shafts 203 are rotatably mounted on the two brackets 202. A buffer belt 4 is fitted onto both support shafts 203. The buffer belt 4 is made of rubber and is used to catch the falling hawthorns and reduce the impact force when the hawthorns fall. After the hawthorns are poured in from the feed end, they first fall onto the buffer belt 4. The elasticity of the rubber material can absorb the impact force when falling, preventing the hawthorns from directly hitting hard parts and causing damage. A drive motor 802 is fixedly mounted on one of the brackets 202. The output shaft of motor 802 is fitted with a transmission belt 803 on one of the support shafts 203, and a transmission belt 8 is fitted with the other support shaft 203 and the transmission shaft 151. The two support shafts 203 are fitted with a transmission belt 801. With the above structure, when the drive motor 802 is running, it can drive the support shaft 203 to rotate by the transmission action of the transmission belt 803, thereby driving the buffer belt 4. When the support shaft 203 rotates, it can drive the transmission shaft 151 to rotate by the transmission action of the transmission belt 8, thereby driving the toothed belt 15 to move, thereby driving the conveyor roller 3.

[0029] As a further embodiment of the present invention, an elongated support frame 16 is fixedly installed on one side of the mounting frame 102, and the toothed belt 15 is slidably engaged with the elongated support frame 16; the elongated support frame 16 can support the toothed belt 15 and ensure that the toothed belt 15 stably meshes with the gear 7.

[0030] Furthermore, limit baffles 901 are fixedly installed on opposite sides of the two elongated cylindrical trough frames 9; by using the limit baffles 901, the hawthorns can be prevented from detaching from the side of the device during the sorting process, ensuring the smooth operation of the sorting operation.

[0031] Furthermore, a receiving plate 2 is fixedly installed between the mounting frame 102 and multiple supporting columns 101, and a distributing hopper plate 201 is fixedly installed on the receiving plate 2. The receiving plate 2 and the distributing hopper plate 201 can be used to collect the sorted hawthorns and facilitate guiding and collecting them. Specifically, the limiting baffle 901 can prevent the hawthorns from falling off the side of the conveying roller 3, ensuring that the hawthorns fall accurately into the receiving plate 2 below. The position of the distributing hopper plate 201 corresponds one-to-one with the spacing area of ​​the four sets of conveying rollers 3. Small-sized hawthorns falling from the narrow spacing, medium-sized hawthorns falling from the medium spacing, and large-sized hawthorns output from the wide spacing fall into different areas separated by the distributing hopper plate 201, realizing the integration of "grading and screening - grading and collection", eliminating the need for secondary sorting and reducing subsequent processing costs.

[0032] Working principle: The drive motor 802, fixed to bracket 1 202, is started, driving one of the support shafts 203 to rotate via transmission belt 3 803. Since both support shafts 203 are fitted with transmission belt 2 801, the rotated support shaft 203 drives the other support shaft 203 to rotate synchronously via transmission belt 2 801, thereby driving the rubber buffer belt 4 fitted on both support shafts 203 to run at a uniform speed, preparing to receive hawthorns; the support shaft 203 connected to transmission belt 3 803 drives the installation... The drive shaft 151 mounted on the mounting frame 102 rotates; the drive shaft 151 and the drive shaft 152 mounted on the extension plate 153 are fitted with a toothed belt 15, so the drive shaft 151 drives the drive shaft 152 to rotate synchronously through the toothed belt 15; one end of each conveying chamber roller 3 is fixed with a gear 7, and the gear 7 meshes with the toothed belt 15. The long cylindrical support 16 on one side of the mounting frame 102 supports the toothed belt 15 to prevent it from shifting and to ensure stable meshing. Therefore, the toothed belt 15 drives all the conveying chamber rollers to rotate synchronously. The feeding roller 3 rotates at a uniform speed, and the screening system is officially started. The electric telescopic rod 10, fixed to the support column 101, is activated, and its extension and retraction are controlled according to the estimated size of the hawthorns to be screened. If the hawthorn size is too small, the electric telescopic rod 10 shortens, driving the folded rod 11 at its end to move towards the support column 101. The folded rod 11 is connected to the end of the cross link 6 through a movable shaft, so it will pull the cross link 6 to retract around the movable shaft at the end of the mounting link 17. The connecting shaft at the joint of the cross link 6 drives the fixed link to retract. The fixed elongated through-slot block 13 and elongated through-slot box 14 slide inward along the elongated through-slot frame 9. The limiting support 902 ensures that the elongated through-slot block 13 and elongated through-slot box 14 slide without deviation, and finally the distance between the four sets of conveying cavity rollers 3 decreases synchronously, which is suitable for small-sized hawthorns; if the hawthorn size is too large: the electric telescopic rod 10 extends, the folded rod 11 pushes the cross connecting rod 6 to unfold, the elongated through-slot block 13 and elongated through-slot box 14 slide outward along the elongated through-slot frame 9, and the distance between the four sets of conveying cavity rollers 3 increases synchronously, which is suitable for large-sized hawthorns; When the extension distance of the electric telescopic rod 10 increases, the folded rod 11 drives the rack 12 to move outward, and the rack 12 meshes with the toothed column 506 to rotate clockwise, driving the threaded valve 505 to increase its opening. The water supply from the external water supply system to the liquid supply header 5 fixed at the top of the support column 103 through the delivery pipe 504 increases. When the extension distance of the electric telescopic rod 10 decreases, the rack 12 drives the toothed column 506 to rotate counterclockwise, the opening of the threaded valve 505 decreases, and the water supply from the liquid supply header 5 decreases. Simultaneously, the hawthorns to be screened are evenly poured into the running buffer belt 4. The rubber buffer belt 4 can absorb the impact force of the falling hawthorns, preventing them from being damaged by impact. At the same time, the hawthorns are uniformly conveyed to the feeding end of the four sets of conveying rollers 3. Small-sized hawthorns: with a diameter smaller than the spacing of the first set of conveying rollers 3, fall from the spacing under the rotation of the conveying rollers 3 and land in the corresponding area of ​​the receiving plate 2 below. Medium / large-sized hawthorns: with a diameter larger than the spacing of the first set, are continued to be conveyed forward by the conveying rollers 3 to the second set of conveying rollers 3 with a slightly wider spacing. Medium-sized hawthorns fall from the second set of spacing, while large-sized hawthorns continue to fall. The hawthorns are first conveyed to the third and fourth conveying rollers 3, and finally, the large-sized hawthorns are output from the end of the fourth conveying roller 3, completing the grading and screening of "small → medium → large". The water in the liquid supply main pipe 5 is conveyed to the connecting bucket 502 through the corrugated hose 501. The connecting bucket 502 is fixed to the elongated trough box 14 through the connecting short column 503, and is connected to one end of the conveying roller 3 through the sealed bearing to ensure that the water supply is not affected when the conveying roller 3 rotates. The water enters the interior of the conveying roller 3 from the connecting bucket 502, and then sprays out through the liquid outlet 301 on the conveying roller 3 to rinse the hawthorns during the conveying process and remove surface impurities. In summary, small and medium-sized hawthorns falling from the four sets of conveying rollers 3 at different intervals, as well as large-sized hawthorns output from the end of the fourth set of conveying rollers 3, all fall into the receiving plate 2 below. The material distribution hopper plate 201 fixed on the receiving plate 2 divides the receiving area into three parts corresponding to small, medium, and large-sized hawthorns, realizing the graded collection of hawthorns of different sizes. No secondary sorting is required, and they can directly enter the subsequent processing or storage stage. Finally, the drive motor 802 is turned off, and the buffer belt 4 and the conveying rollers 3 stop running. The electric telescopic rod 10 is turned off to restore it to its initial state. The external water supply system is turned off, the threaded valve 505 automatically resets, and the liquid supply header 5 stops supplying water, thus ending the entire screening process.

[0033] In embodiment two, the inner wall of each conveying chamber roller 3 is provided with multiple convex grooves 302 that are staggered with the liquid outlet holes 301, and each convex groove 302 is sealed and slidably installed with a movable protrusion 303. A pair of connecting springs 304 are fixedly connected between the movable protrusion 303 and the convex groove 302. With the above structure, when the spacing of the conveying chamber rollers 3 increases and the water pressure inside them increases, the movable protrusion 303 extends to a greater extent, slightly pushing the large-sized hawthorns to avoid them getting stuck due to their own weight or friction with the conveying chamber rollers 3, thus ensuring smooth conveying.

[0034] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hawthorn grading and screening device, comprising a base (1) and an installation frame (102), wherein a plurality of supporting columns (101) are fixedly installed between the base (1) and the installation frame (102), characterized in that, An adjustable sorting component, a push-pull unit, a drive component, and an auxiliary cleaning component are mounted on the mounting frame (102); The adjustable sorting assembly includes a pair of elongated slot frames (9) fixed on a mounting frame (102). Mounting rods (17) are fixed on both sides of the mounting frame (102). The ends of the mounting rods (17) are connected to a set of cross rods (6) via movable shafts. A connecting shaft is rotatably mounted at the joint of each set of cross rods (6). An elongated through slot block (13) and an elongated slot box (14) are respectively provided on the outer side of the two sets of cross rods (6). The elongated through slot block (13) and the elongated slot box (14) are connected to the adjacent connecting shafts. Fixed connection, each elongated through groove block (13) and elongated groove box (14) correspond one-to-one, and a matching conveying cavity roller (3) is movably installed between the elongated through groove block (13) and the elongated groove box (14). There are four sets of conveying cavity rollers (3), and the spacing between each set of conveying cavity rollers (3) increases. There are four specifications of each set of cross connecting rods (6), and each specification of the cross connecting rods (6) corresponds to the spacing between the conveying cavity rollers (3). Multiple conveying cavity rollers (3) are slidably connected to the elongated groove frame (9). The push-pull unit includes a pair of electrically operated telescopic rods (10) fixed to two of the support columns (101). The drive assembly is used to drive multiple conveying chamber rollers (3) to rotate.

2. The hawthorn grading and screening equipment according to claim 1, characterized in that: The auxiliary cleaning assembly includes a liquid supply main pipe (5), and multiple support columns (103) are fixedly installed on one side of the base (1). The top ends of the multiple support columns (103) are fixedly connected to the bottom side of the liquid supply main pipe (5). One end of the liquid supply main pipe (5) is fixedly connected to a conveying pipe (504). A threaded valve (505) is fixedly installed on the conveying pipe (504). A toothed column (506) is fixed at the end of the threaded valve (505). The conveying pipe (504) is connected to an external water supply system. Each conveying chamber roller (3) is provided with a liquid outlet hole (301). A limit support (902) is movably passed through multiple elongated through-slot blocks (13) and multiple elongated slot boxes (14). The limit support (902) is fixedly installed on the elongated slot frame (9).

3. The hawthorn grading and screening equipment according to claim 2, characterized in that: The push-pull unit includes a folded rod (11) fixedly installed at the end of the electric telescopic rod (10). The end of the folded rod (11) is rotatably connected to the end of the cross link (6) through a movable shaft. A rack (12) is meshed on the toothed column (506), and the rack (12) is fixedly connected to the adjacent folded rod (11).

4. The hawthorn grading and screening equipment according to claim 1, characterized in that: The drive assembly includes an extension plate (153) fixedly installed on one side of the mounting frame (102), and a second drive shaft (152) and a first drive shaft (151) are rotatably installed on the extension plate (153) and the mounting frame (102), respectively. A toothed belt (15) is sleeved on the second drive shaft (152) and the first drive shaft (151). A gear (7) is fixedly installed at one end of each conveying chamber roller (3), and the gear (7) meshes with the toothed belt (15).

5. The hawthorn grading and screening equipment according to claim 2, characterized in that: A connecting bucket (502) is provided on one side of the liquid supply main pipe (5) and is rotatably connected to one end of the conveying chamber roller (3) via a sealed bearing. A corrugated hose (501) is fixedly connected between the connecting bucket (502) and the liquid supply main pipe (5). A pair of connecting short columns (503) are fixed on one side of each connecting bucket (502), and the other end of the connecting short columns (503) is fixedly installed on the elongated trough box (14).

6. The hawthorn grading and screening equipment according to claim 1, characterized in that: A pair of brackets (202) are fixed on one side of the mounting frame (102). A pair of support shafts (203) are rotatably mounted on the two brackets (202). A buffer belt (4) is sleeved on the two support shafts (203). The buffer belt (4) is made of rubber. A drive motor (802) is fixedly mounted on one of the brackets (202). A transmission belt (803) is sleeved on the output shaft of the drive motor (802) and one of the support shafts (203). A transmission belt (8) is sleeved on the other support shaft (203) and a transmission shaft (151). A transmission belt (8) is sleeved on the two support shafts (203). A transmission belt (801) is sleeved on the two support shafts (203).

7. The hawthorn grading and screening equipment according to claim 4, characterized in that: A long cylindrical support (16) is fixedly installed on one side of the mounting frame (102), and the toothed belt (15) slides in cooperation with the long cylindrical support (16).

8. The hawthorn grading and screening equipment according to claim 1, characterized in that: Limiting baffles (901) are fixedly installed on the opposite sides of the two elongated cylindrical slot frames (9).

9. The hawthorn grading and screening equipment according to claim 1, characterized in that: The mounting frame (102) and multiple supporting columns (101) are jointly fixedly installed with a receiving plate (2), and a distributing hopper plate (201) is fixedly installed on the receiving plate (2).

10. A hawthorn grading and screening device according to claim 1, characterized in that: Each conveying chamber roller (3) has multiple convex grooves (302) that are staggered with the liquid outlet (301) on its inner wall, and each convex groove (302) has a movable convex piece (303) that is sealed and slidably installed inside, and a pair of connecting springs (304) are fixedly connected between the movable convex piece (303) and the convex groove (302).

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