Efficient nondestructive berry impurity screening machine

Abstract

The invention discloses an efficient nondestructive berry impurity screening machine which is characterized by comprising a rack (3), more than two layers of sieves (1) are arranged on the rack (3), each sieve (1) comprises sieve frames (8), rolling shafts (13) are arranged between the sieve frames (8) side by side, a plurality of blocking pieces (15) are arranged on each rolling shaft (13), the blocking pieces (15) of the front rolling shaft (13) and the rear rolling shaft (13) are arranged in a staggered mode, and gaps are formed between the rolling shafts (13) and the blocking pieces (15). And the gaps are larger than the screened berries and are arranged from small to large according to the running direction. According to the multi-layer lossless berry impurity screening machine provided by the invention, the rolling device with different gaps which are convenient to adjust is arranged, a soft material is arranged at the part in contact with fruits, and a multi-layer screening mode is adopted, so that large, small, shrunken fruits, bunched fruits, leaves, crotches, insects and other light and heavy impurities mixed in the fruits are completely screened out together; and the fruits are not vibrated and extruded in the impurity screening process, so that the fruits are not damaged.

Description

Technical Field

[0001] The invention relates to fruit impurity screening equipment, in particular to a high-efficiency and lossless berry impurity screening machine. Background Art

[0002] There are many kinds of berries, such as blueberries, raspberries, grapes, mulberries, etc. They are characterized by thin outer skin, tender and juicy flesh, and are easily damaged by squeezing, shaking, touching, etc. Due to the high efficiency of mechanical harvesting, it has been used more and more widely in recent years. The main principle of mechanical harvesting is to vibrate and drop the fruit. It is inevitable that the harvested fruits are mixed with small, shrunken fruits, clusters of fruits, leaves, branches, insects and other impurities. The existing screening devices mainly use vibration and shaking to make impurities smaller than fruits fall through the screening holes to separate them from the fruits. Some are supplemented by blowing to screen out light impurities. There is a problem that heavy impurities such as clusters of fruits and branches that are larger than fruits and have irregular shapes cannot be screened, and vibration and shaking can easily damage the berries. Chinese patent CN212753365U discloses a fruit sorting device for separating leaves and bunches of fruits, comprising a frame, a feed hopper is arranged above the frame, an arc-shaped opening is opened at the lower end of the front plate of the feed hopper, two cross arms are arranged on the frame, more than two rollers are arranged between the cross arms, the rollers are connected to the motor through a transmission mechanism, and the motor is arranged at the lower part of the frame; a plurality of roller rings are arranged on each roller, the roller rings of the front and rear rollers are arranged alternately, and a gap is arranged between the rollers and the roller rings, and the gap is larger than the sorted fruit. The device can separate heavy impurities such as fruit bunches and tree branches that are larger than fruits and irregular in shape. However, it was found during use that the impurity removal effect was not ideal. When berries such as blueberries fall from the feed hopper onto the rollers of the frame, larger tree branches and fruit bunches can be separated, but due to the large number of berries, some soft leaves and small branches are easily squeezed by the berries and carried through the gaps between the rollers and rolling rings when they are perpendicular to the frame, resulting in incomplete separation of impurities. At the same time, the device has problems such as being unable to screen out impurities smaller than fruits such as small and shrunken fruits, fruits easily slipping between the rollers, and the gaps between the rollers being difficult to adjust. Summary of the invention

[0003] The purpose of the present invention is to provide a highly efficient and lossless berry impurity screening machine with good screening effect, which can screen out fruits and small, shrunken fruits, bunched fruits, leaves, branches, insects and other large and small and heavy impurities together, and the equipment is easy to adjust, can be used for a variety of fruits and multiple regions, and has strong applicability.

[0004] The technical solution of the present invention is as follows: a high-efficiency and lossless berry impurity screening machine comprises a frame, the frame is provided with more than two layers of sieves, the sieve comprises a sieve frame, rollers arranged side by side are arranged between the sieve frames, a plurality of baffles are arranged on each roller, the baffles of the front and rear rollers are arranged alternately, a gap is provided between the rollers and the baffles, the gap is larger than the berries to be screened, and the gap is arranged from small to large according to the running direction.

[0005] The gap setting method is that after the maximum and minimum diameters of the screened berries are determined, the middle value is taken as the standard diameter, and the gap of the screen is set from 1.1 to 1.4 times the minimum diameter, the standard diameter and the maximum diameter according to the running direction.

[0006] The gap setting method is that after the maximum and minimum diameters of the screened berries are determined, the middle value is taken as the standard diameter, and the gap of the sieve is set from 1.1 to 1.2 times of the minimum diameter, the standard diameter and the maximum diameter according to the running direction.

[0007] A small impurity separation screen with uniform gaps is provided at the bottom of the sieve, and the gap of the small impurity separation screen is 0.9 times the minimum diameter of the berry.

[0008] The sieve has 2-3 layers.

[0009] The cross section of the roller is D-shaped, and a shaft sleeve and a baffle are arranged on the roller in sequence, and the shaft sleeve is a soft hollow cylinder.

[0010] The required gap is obtained by adjusting the wall thickness of the sleeve and the distance between the rollers, and by adjusting the length of the sleeve and the distance between the baffles.

[0011] Each layer of sieves is connected by locks.

[0012] Beneficial effects of the present invention: The multi-layer non-destructive berry impurity screening machine provided by the present invention has a rolling device with different and easily adjustable gaps, and a soft material is set at the part in contact with the fruit. It adopts a multi-layer screening method to screen out small, shrunken, bunched fruits, leaves, branches, insects and other large and small impurities mixed in the fruit. In the process of screening out impurities, the fruit is not vibrated or squeezed, so that the fruit is not damaged. The existing multi-layer screening machine usually screens and separates the fruit by size. The technology of the present invention further improves and innovates on the existing technology, and uses the gradual gap setting and multi-layer screening to separate impurities such as leaves and branches that are difficult to separate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic structural diagram of the first layer of the sieve of the present invention; Figure 3 It is a schematic diagram of the assembly of the roller, the bushing and the baffle; Figure 4 yes Figure 3 A cross-sectional view of a Figure 5 is a schematic diagram of the roller structure; Figure 6 It is a schematic diagram of the locking direction structure of the present invention.

[0014] Figure numerals: sieve 1, frame 3, impurity outlet 4, impurity collecting box 5, impurity collecting box 6, qualified fruit outlet 7, sieve frame 8, synchronous belt 9, motor 10, guide plate 11, small impurity separation screen 12, roller 13, sleeve 14, baffle 15, lock 16. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the embodiments, but they are not intended to limit the present invention. Example

[0016] An efficient and non-destructive berry impurity screening machine, such as Figure 1-6 As shown, the machine comprises a frame 3, on which more than two layers of sieves 1 are arranged, and the sieves 1 comprise sieve frames 8, between which rollers 13 arranged side by side are arranged, and on each roller 13 are arranged a plurality of baffles 15, and the baffles 15 of the front and rear rollers 13 are arranged alternately, and a gap is provided between the rollers 13 and the baffles 15, and the gap is larger than the berries to be screened, and the gap is arranged from small to large according to the running direction.

[0017] The gap setting method is that after the maximum and minimum diameters of the screened berries are determined, the middle value is taken as the standard diameter, and the gap of the sieve 1 is set from 1.1 to 1.4 times of the minimum diameter, the standard diameter and the maximum diameter according to the running direction.

[0018] The gap setting method is that after the maximum and minimum diameters of the screened berries are determined, the middle value is taken as the standard diameter, and the gap of the sieve 1 is set from 1.1 to 1.2 times of the minimum diameter, the standard diameter and the maximum diameter according to the running direction.

[0019] The bottom of the sieve 1 is provided with a small impurity separation sieve 12 with uniform gaps, and the gap of the small impurity separation sieve 12 is 0.9 times the minimum diameter of the berry.

[0020] The sieve 1 has 2-3 layers.

[0021] The cross section of the roller 13 is D-shaped, and a sleeve 14 and a baffle 15 are arranged on the roller 13 in sequence. The sleeve 14 is a soft hollow cylinder. The sleeve 14 is set to different wall thicknesses as required, and the material is food-grade silicone or other similar materials. The baffle 15 is made of rubber or similar materials.

[0022] The required gap is obtained by adjusting the wall thickness of the sleeve 14 and the distance between the rollers 13 , and by adjusting the length of the sleeve 14 and the distance between the baffles 15 .

[0023] Each layer of sieves 1 is connected by a lock 16. When cleaning or maintenance is required, the lock 16 is opened to conveniently remove the sieves.

[0024] The sieve 1 includes a sieve frame 8, a roller 13, a sleeve 14 and a baffle 15. The roller 13 is rotatably connected to the sieve frame 8, and the sleeve 14 and the baffle 15 are sleeved on the roller 13. The motor 10 is installed on the frame 3, and the motor 10 is connected to the synchronous belt 9, and the synchronous belt 9 is connected to the roller 13. A guide plate 11 is arranged below each layer of the sieve 1, and the guide plate 11 is fixedly connected to the sieve frame 8. A feed port 2 is arranged on the first layer of the sieve 1, and an impurity outlet 4 is connected to the outlet of the first and second layers of the sieve 1, and an impurity collection box 5 is arranged below the impurity outlet 4. The outlet of the third layer of small impurities separation screen 12 is connected to the qualified fruit outlet 7. An impurity collection box 6 is arranged directly below the third layer of the sieve.

[0025] Working principle: Pour the berries and impurities to be screened into the feed hopper 2, turn on the motor 10, and the motor 10 rotates. The motor 10 drives the roller 13 to operate through the synchronous belt 9, and the roller 13 drives the sleeve 14 and the baffle 15 to move. After the berries and impurities enter the first layer of the sieve 1, as the roller 13 and the baffle 15 move forward, larger impurities such as leaves, branches, and bunches of fruits will move to the impurity outlet 4 with the baffle 15, and then enter the impurity collection box 5, and the fruits and some unscreened impurities will fall from the gap of the roller 13 to the second layer of the sieve 1. Due to the setting of the gap from large to small, smaller fruits will leak out of the first group of small gaps, and ordinary size fruits will reach the second group of medium gaps with the operation of the rollers, and leak out of the second group of medium gaps. In turn, larger fruits will leak out of the third group of large gaps. When the fruit leaks onto the second-layer sieve 1, the leaves, branches, and bunches of fruit that are not screened out by the upper sieve 1 will run to the impurity outlet 4 along with the baffle 15, and then enter the impurity collection box 5. The qualified fruit and small impurities fall from the gap between the rollers to the small impurity separation screen 12 of the third layer. At this time, the leaves, branches, and bunches of fruit are basically screened out. At the small impurity separation screen 12 of the third layer, the qualified fruit reaches the qualified fruit outlet 7 along with the operation of the roller 13, and impurities such as shrunken fruit, unripe fruit, and insects fall from the gap between the rollers to the impurity collection box 6.

[0026] During screening, if leaves, branches, and bunches of fruits are not screened out, the gap of the first layer of sieve 1 is adjusted so that the fruits do not fall together directly below the feed hopper 2, but fall one by one on the second layer of sieve 1 according to the size of the fruits, thereby achieving uniform material drop, preventing leaves, branches, etc. from being squeezed by fruits and entrained through the gap between the roller 13 and the baffle 15, and the impurities can be screened out. If the two layers of sieve 1 are not screened out, multiple layers of sieve 1 can be set to further screen leaves, branches, and bunches of fruits. Example

[0027] An efficient and non-destructive berry impurity screening machine, such as Figure 1-6As shown, it includes a frame 3, on which a two-layer sieve 1 is arranged, and the sieve 1 includes a sieve frame 8, between which rollers 13 arranged side by side are arranged, and on each roller 13, a plurality of baffles 15 are arranged, and the baffles 15 of the front and rear rollers 13 are arranged alternately, and a gap is provided between the rollers 13 and the baffles 15, and the gap is larger than the berries to be screened, and the gap is arranged from small to large according to the running direction.

[0028] The gap setting method is that after the maximum and minimum diameters of the screened berries are determined, the middle value is taken as the standard diameter, and the gap of the sieve 1 is set from the minimum diameter, the standard diameter and 1.3 times the maximum diameter according to the running direction.

[0029] The bottom of the sieve 1 is provided with a small impurity separation sieve 12 with uniform gaps, and the gap of the small impurity separation sieve 12 is 0.9 times the minimum diameter of the berry.

[0030] The cross section of the roller 13 is D-shaped, and a sleeve 14 and a baffle 15 are arranged on the roller 13 in sequence. The sleeve 14 is a soft hollow cylinder. The sleeve 14 is set to different wall thicknesses as required, and the material is food-grade silicone or other similar materials. The baffle 15 is made of rubber or similar materials.

[0031] The required gap is obtained by adjusting the wall thickness of the sleeve 14 and the distance between the rollers 13 , and by adjusting the length of the sleeve 14 and the distance between the baffles 15 .

[0032] The working principle is the same as that of Example 1. Example

[0033] An efficient and non-destructive berry impurity screening machine, such as Figure 1-6 As shown, the machine comprises a frame 3, on which more than two layers of sieves 1 are arranged, and the sieves 1 comprise sieve frames 8, between which rollers 13 arranged side by side are arranged, and on each roller 13 are arranged a plurality of baffles 15, and the baffles 15 of the front and rear rollers 13 are arranged alternately, and a gap is provided between the rollers 13 and the baffles 15, and the gap is larger than the berries to be screened, and the gap is arranged from small to large according to the running direction.

[0034] The gap setting method is that after the maximum and minimum diameters of the screened berries are determined, the middle value is taken as the standard diameter, and the gap of the sieve 1 is set from the minimum diameter, the standard diameter and 1.1 times the maximum diameter according to the running direction.

[0035] For the convenience of operation, the gap of the sieve 1 can be designed into three types: large, medium and small. The sieve 1 is divided into three areas according to the running direction, a small gap is set just below the feed hopper 2, a medium gap is set in the middle part of the sieve 1, and a large gap is set in the part away from the feed hopper 2 along the running direction. For example, if the maximum diameter of the berry is 20 mm and the minimum diameter is 10 mm, the standard diameter can be 15 mm. The gap of the sieve 1 is set to 22 mm, 16.5 mm and 11 mm respectively, that is, the gaps of the sieve 1 in the three areas of large, medium and small are obtained.

[0036] The bottom of the sieve 1 is provided with a small impurity separation sieve 12 with uniform gaps, and the gaps of the small impurity separation sieve 12 are 0.9 times the minimum diameter of the berries. This can reduce the wall thickness and length specifications of the shaft sleeve 14, making installation easier.

[0037] The sieve 1 has two layers.

[0038] The cross section of the roller 13 is D-shaped, and a sleeve 14 and a baffle 15 are arranged on the roller 13 in sequence. The sleeve 14 is a soft hollow cylinder. The sleeve 14 is set to different wall thicknesses as required, and the material is food-grade silicone or other similar materials. The baffle 15 is made of rubber or similar materials.

[0039] The required gap is obtained by adjusting the wall thickness of the sleeve 14 and the distance between the rollers 13 , and by adjusting the length of the sleeve 14 and the distance between the baffles 15 .

Claims

1. An efficient and non-destructive berry impurity screening machine, characterized by: The invention comprises a frame (3), wherein the frame (3) is provided with more than two layers of sieves (1), the sieves (1) comprising sieve frames (8), rollers (13) arranged side by side are arranged between the sieve frames (8), a plurality of baffles (15) are arranged on each roller (13), the baffles (15) of the front and rear rollers (13) are arranged in a staggered manner, a gap is provided between the rollers (13) and the baffles (15), the gap is larger than the berries to be screened, and the gap is arranged from small to large according to the running direction.

2. The high-efficiency and non-destructive berry impurity screening machine according to claim 1 is characterized in that: The gap setting method is that after the maximum and minimum diameters of the berries to be screened are determined, the middle value is taken as the standard diameter, and the gap of the sieve (1) is set from 1.1 to 1.4 times the minimum diameter, the standard diameter and the maximum diameter according to the running direction.

3. The high-efficiency and non-destructive berry impurity screening machine according to claim 2 is characterized in that: The gap setting method is that after the maximum and minimum diameters of the berries to be screened are determined, the middle value is taken as the standard diameter, and the gap of the sieve (1) is set from 1.1 to 1.2 times the minimum diameter, the standard diameter and the maximum diameter according to the running direction.

4. The high-efficiency and non-destructive berry impurity screening machine according to claim 1 is characterized in that: The sieve (1) is provided with a small impurity separation sieve (12) with uniform gaps at the bottom, and the gaps of the small impurity separation sieve (12) are 0.9 times the minimum diameter of the berries.

5. The high-efficiency and non-destructive berry impurity screening machine according to claim 1 is characterized in that: The sieve (1) has 2-3 layers.

6. The high-efficiency and non-destructive berry impurity screening machine according to claim 1 is characterized in that: The cross section of the roller (13) is D-shaped, and a shaft sleeve (14) and a baffle (15) are sequentially arranged on the roller (13), wherein the shaft sleeve (14) is a soft hollow cylinder.

7. The high-efficiency and non-destructive berry impurity screening machine according to claim 6 is characterized by: The required gap is obtained by adjusting the wall thickness of the shaft sleeve (14) to adjust the distance between the rollers (13), and by adjusting the length of the shaft sleeve (14) to adjust the distance between the baffles (15).

8. The high-efficiency and non-destructive berry impurity screening machine according to claim 1 is characterized by: Each layer of the screen frames (8) is connected via a lock (16).

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