A conveying device for low-temperature packaging of vitamin C candy

Abstract

The invention discloses a conveying device for low-temperature packaging of vitamin C candies, comprising: a protective cover, which is an N-shaped cavity, with a plurality of cooling parts on the outer side of the protective cover, the cooling parts comprising T-shaped fins equipped with semiconductor refrigeration sheets and fans blowing air to the T-shaped fins, for cooling the inside of the protective cover; a multi-stage conveying mechanism, which is arranged inside the protective cover, and comprises a plurality of conveyors arranged up and down; the candies can be graded by size through a picking and separating mechanism, and large particles and sticky candies are removed through a power push rod of a driving part, so as to ensure the quality and consistency of the product; the combination of a vibration motor and a separation push rod increases the efficiency of the screening process, and can process a large amount of candies faster; through an intermittently energized electromagnet, the gap is switched on and off and a shaking trough is reciprocated to vibrate, so that the candies are shaken apart.

Description

Technical Field

[0001] The invention relates to the technical field of candy processing, in particular to a conveying device for low-temperature packaging of vitamin C candy. Background Art

[0002] Vitamin C candy is a candy product that combines vitamin C with sugar ingredients. Its main purpose is to supplement the vitamin C needed by the human body through eating candy. The main ingredients of vitamin C candy include vitamin C and sugar (such as glucose syrup, white sugar). When making vitamin C candy, powdered vitamin C is mixed with glucose, heated to a certain temperature, spread on a flat, semi-fluid maltose, rolled into layers, and then rolled with a layer of semi-fluid maltose on the outside, and finally stretched and cut into pieces. When packaging, it needs to be transported stably under low temperature conditions to prevent the candy from melting or deteriorating due to the increase in temperature.

[0003] During low-temperature transportation, in a low-temperature environment, some candy surfaces may stick to each other due to humidity or temperature changes, making it difficult to separate during transportation. Existing low-temperature transportation devices mainly focus on maintaining a low-temperature environment and stable transportation, and do not have corresponding separation and selection mechanisms. They are unable to separate sticky or large-particle candies, affecting product quality. Summary of the invention

[0004] The object of the present invention is to provide a conveying device for low-temperature packaging of vitamin C candies to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a conveying device for low-temperature packaging of vitamin C candies, comprising:

[0006] The protective cover is an n-shaped cavity, and the outer side of the protective cover is provided with a plurality of cooling parts, and the cooling parts include T-shaped fins equipped with semiconductor cooling sheets and fans blowing air to the T-shaped fins, so as to cool the inside of the protective cover;

[0007] A multi-stage conveying mechanism is placed inside the protective cover, and the multi-stage conveying mechanism includes a plurality of conveyors arranged up and down, a brush roller for moving candies on the conveyor is provided inside the protective cover, and a recovery drawer is provided inside the protective cover and below the conveyor for recovering excess sugar powder;

[0008] A selection and separation mechanism is arranged at the end of the conveyor located in the middle, and comprises a screening frame of a V-shaped structure, wherein a plurality of through slots for screening are evenly spaced in the middle of the screening frame, a separation push rod is slidably connected in the through slot, a driving part is arranged at the bottom of the separation push rod, and the candies are rolled down along the through slots on the screening frame to complete screening, and the separation push rod reciprocates from bottom to top in the through slots to push out the candies that cannot be filtered from the top;

[0009] A No. 1 shaking trough is arranged at the end of the conveyor at the bottom, and is used for shaking up and down to prevent candies from sticking.

[0010] Preferably, the cooling part also includes a cylindrical cover fixedly connected to the outside of the protective cover, the fan is fixedly connected to the outside of the cylindrical cover, the T-shaped fins are evenly inserted into the inside of the cylindrical cover with the center of the cylindrical cover as the center, and the cylindrical cover and the protective cover are both provided with corresponding ventilation holes.

[0011] Preferably, the conveyor comprises belt conveyor No. 1, belt conveyor No. 2 and belt conveyor No. 3, and the conveyor comprises belt conveyor No. 1, belt conveyor No. 2 and belt conveyor No. 3 which are arranged alternately up and down, a plurality of brush rollers are provided and placed above belt conveyor No. 1, and a feed hopper is fixedly connected to one end of the protective cover and located above belt conveyor No. 1.

[0012] Preferably, a recovery box is fixedly connected to the bottom of the No. 1 belt conveyor, a cleaning scraper and a cleaning brush are fixedly connected to the interior of the recovery box, and the cleaning scraper and the cleaning brush are both slidably connected to the conveyor belt of the No. 1 belt conveyor.

[0013] Preferably, the screening frame is fixedly connected to the inner wall of the protective cover via a plurality of No. 3 springs, and a vibration motor is fixedly connected to one end of the screening frame.

[0014] Preferably, two support frames are fixedly connected inside the protective cover and below the screening frame, a discharge plate is fixedly connected to one side of the support frame, the driving part is respectively installed on the sides of the two support frames, the driving part includes a transmission belt assembly installed on the sides of the support frame, a driving motor is fixedly connected to one side of the support frame, the output end of the driving motor is transmission-connected to the transmission belt assembly, a cross bar is fixedly connected to the transmission belts of the two transmission belt assemblies, and the separation push rod is fixedly connected to the cross bar.

[0015] Preferably, an elastic plate is installed on the outer side of the separation push rod for pushing the filtered large-particle candies.

[0016] Preferably, the recycling drawer is internally slidably connected with a discharging push plate, one side of the discharging push plate is fixedly connected to a connecting rod for driving the discharging push plate, and one side of the protective cover is detachably mounted with a recycling groove corresponding to the recycling drawer.

[0017] Preferably, one end of the bottom of the No. 3 belt conveyor is fixedly connected to a No. 1 limit rod, the bottom of the No. 1 limit rod is fixedly connected to a No. 1 cross plate, the No. 1 shaking material trough is slidably connected to the outside of the No. 1 limit rod, and a No. 1 spring is sleeved on the outside of the No. 1 limit rod and located above the No. 1 shaking material trough. The top of the No. 1 cross plate is fixedly connected to an electromagnet corresponding to the bottom of the No. 1 shaking material trough, and the two electromagnets have the same magnetic poles when energized. The bottom of the No. 1 shaking material trough is fixedly connected to a No. 2 limit rod, the bottom of the No. 2 limit rod is fixedly connected to a No. 2 cross plate, the outside of the No. 2 limit rod is slidably connected to the No. 2 shaking material trough, and a No. 2 spring is sleeved on the outside of the No. 2 limit rod and located above the No. 2 cross plate.

[0018] Preferably, the bottom of the protective cover is fixedly connected to a supporting base.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: by utilizing the combination of semiconductor refrigeration sheets and T-shaped fins, as well as the cooling effect of the fan, the low temperature inside the protective cover is ensured to prevent the vitamin C candy from being degraded due to the increase in temperature during the processing; the candy size can be graded by the picking and separation mechanism, and large particles and sticky candies are removed by the power push rod of the driving part, thereby ensuring the quality and consistency of the product; the combination of the vibration motor and the separation push rod increases the efficiency of the screening process, and a large amount of candies can be processed faster; the excess sugar powder can be collected by the recovery drawer and the discharge push plate, thereby reducing material waste and keeping the equipment clean, facilitating centralized processing and recycling of waste materials, and improving material utilization; by intermittently energized electromagnets, the gaps are switched on and off and the shaking trough is vibrated back and forth, thereby giving the candy a last bumpy vibration, so that the candies stuck together are shaken apart. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the distribution structure of the belt conveyor of the present invention;

[0022] Figure 3 It is a schematic diagram of the position structure of the vibration motor of the present invention;

[0023] Figure 4 This is a structural schematic diagram of the discharging push plate of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the electromagnet of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the T-shaped fin of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the cleaning brush of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the separation push rod of the present invention;

[0028] Fig. 9 It is a schematic diagram of the feed hopper structure of the present invention.

[0029] In the figure: 1. Protective cover; 2. Cylinder cover; 3. Fan; 4. Semiconductor cooling plate; 5. T-shaped fin; 6. Feed hopper; 7. No. 1 belt conveyor; 8. No. 2 belt conveyor; 9. No. 3 belt conveyor; 10. Recovery drawer; 11. Connecting rod; 12. Discharge push plate; 13. Recovery trough; 14. Brush roller; 16. Recovery box; 17. Cleaning scraper; 18. Cleaning brush; 19. No. 1 shaking trough; 20. 1. Limit rod No. 1; 21. Horizontal plate No. 1; 22. Spring No. 1; 23. Electromagnet; 24. Horizontal plate No. 2; 25. Limit rod No. 2; 26. Shaking trough No. 2; 27. Spring No. 2; 28. Support frame; 29. ​​Drive belt assembly; 30. Screening frame; 31. Vibration motor; 32. Separation push rod; 33. Elastic plate; 34. Spring No. 3; 35. Discharging plate; 36. Driving motor; 37. Support base. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 9The present invention provides a technical solution: a conveying device for low-temperature packaging of vitamin C candies, comprising: a protective cover 1, the protective cover 1 is a cavity of an n-shaped structure, a plurality of cooling parts are arranged on the outside of the protective cover 1, the cooling part comprises a T-shaped fin 5 on which a semiconductor refrigeration sheet 4 is installed and a fan 3 blowing air to the T-shaped fin 5, the cooling end of the semiconductor refrigeration sheet 4 is in contact with the T-shaped fin 5, and is used to cool the inside of the protective cover 1, and a corresponding heat dissipation fan is installed on the heating end of the semiconductor refrigeration sheet 4; a multi-stage conveying mechanism is installed inside the protective cover 1, the multi-stage conveying mechanism comprises a plurality of conveyors arranged up and down, a brush roller 14 for moving candies on the first belt conveyor 7 is arranged inside the protective cover 1, and the protective cover 1 is provided with a brush roller 14 for moving candies on the first belt conveyor 7. A recovery drawer 10 is fixedly connected inside the cover 1 and at the bottom of the No. 1 belt conveyor 7 and the No. 2 belt conveyor 8 for recovering excess sugar powder; a picking and separating mechanism is placed at the end of the conveyor located in the middle, and the picking and separating mechanism includes a V-shaped screening frame 30, and a plurality of screening slots are equidistantly provided in the middle of the screening frame 30, and a separation push rod 32 is slidably connected in the slot, and a driving part is provided at the bottom of the separation push rod 32. The candies roll downward along the slots on the screening frame 30 to complete screening, and the separation push rod 32 reciprocates from bottom to top in the slots to push out the candies that cannot be filtered from the top; a No. 1 shaking trough 19 is placed at the end of the conveyor located at the bottom, and is used for up and down bumps to prevent the candies from sticking.

[0032] It should be noted that the present invention cooperates with the T-shaped fin 5 through the semiconductor refrigeration sheet 4, and the fan 3 blows air to the T-shaped fin 5 to cool the T-shaped fin 5. The cold air enters the protective cover 1 to maintain the low temperature environment inside the protective cover 1. The candy is transported from one end of the No. 1 belt conveyor 7 to the inside of the protective cover 1. When the candy moves along the protective cover 1, it contacts the brush roller 14. The brush roller 14 moves the candy on the No. 1 belt conveyor 7 and cleans the excess sugar particles on the outside thereof, and then falls through the No. 1 belt conveyor 7 to the No. 2 belt conveyor 8 below, and then passes through the No. 2 belt conveyor 8. The belt conveyor 8 enters one end of the screening frame 30 and moves downward along the oblique angle of the screening frame 30. When the diameter is smaller than the width of the through slot, it passes through the through slot and falls onto the No. 3 belt conveyor 9 below to continue to be transported forward. When large particles or large areas are adhered, the driving unit drives the separation push rod 32 to move from bottom to top along the through slot, and the large particles blocked in the through slot are transported upward, and then pushed down from the end to complete the sorting. The filtered sugar passes through the No. 3 belt conveyor 9 and falls above the No. 1 shaking trough 19. The No. 1 shaking trough 19 vibrates and separates the candies that are adhered in a small area.

[0033] like Figure 1 , 6 As shown in Figure 9, the cooling part also includes a cylindrical cover 2 fixedly connected to the outside of the protective cover 1, the fan 3 is fixedly connected to the outside of the cylindrical cover 2, the T-shaped fins 5 are evenly inserted into the inside of the cylindrical cover 2 with the center of the cylindrical cover 2 as the center, and the cylindrical cover 2 and the protective cover 1 are both provided with corresponding ventilation holes.

[0034] It should be noted that the cylindrical cover 2 of the present invention is made of plastic material. Plastic has thermal insulation properties, which helps to prevent the external temperature from affecting the internal cooling effect. The T-shaped fins 5 are metal plates. The T-shaped fins 5 are incorporated into the cylindrical cover 2. The semiconductor refrigeration sheet 4 transfers the low temperature to the T-shaped fins 5. The wind from the fan 3 blows through the T-shaped fins 5 to form cold wind. The cold wind enters the interior of the protective cover 1 through the ventilation holes of the cylindrical cover 2 and the protective cover 1, thereby maintaining a low temperature environment inside the protective cover 1.

[0035] like Figure 2 , 4 As shown, the conveyor includes belt conveyor No. 1 7, belt conveyor No. 2 8 and belt conveyor No. 3 9, and the conveyor includes belt conveyor No. 1 7, belt conveyor No. 2 8 and belt conveyor No. 3 9, which are staggered up and down, and a plurality of brush rollers 14 are provided and placed above belt conveyor No. 1 7, and a feed hopper 6 is fixedly connected to one end of the protective cover 1 and located above belt conveyor No. 1 7, and a recovery box 16 is fixedly connected to the bottom of belt conveyor No. 1 7, and a cleaning scraper 17 and a cleaning brush 18 are fixedly connected to the interior of the recovery box 16, and the cleaning scraper 17 and the cleaning brush 18 are both slidably connected to the conveyor belt of belt conveyor No. 1 7.

[0036] It should be noted that the No. 1 belt conveyor 7, the No. 2 belt conveyor 8 and the No. 3 belt conveyor 9 of the present invention are metal mesh conveyor belts, and the mesh holes of the metal mesh are smaller than the minimum diameter of the candy. The candy enters the metal mesh of the No. 1 belt conveyor 7 from the feed hopper 6, and the No. 1 belt conveyor 7 drives the candy box protective cover 1 to transport it. During the transportation process, cold wind blows to the candy to treat it at a low temperature to prevent adhesion. During the transportation of the No. 1 belt conveyor 7, the candy contacts the brush roller 14, and the bristles on the outside of the brush roller 14 move the candy and clean the outside to separate the excess sugar powder from the candy. The sugar powder passes through the No. 1 belt conveyor 7 and falls into the recovery drawer 10 for recovery. During the rotation of the No. 1 belt conveyor 7, the cleaning brush 18 cleans the metal mesh of the No. 1 belt conveyor 7 and cleans the sugar powder adhering to the outside thereof, and the cleaning scraper 17 is a rubber soft plate. The cleaning scraper 17 slides and rubs with the metal mesh to clean the outside of the metal mesh again, and the cleaned sugar powder is recovered into the recovery box 16.

[0037] like Figure 2 , 3As shown in , 8, the screening frame 30 is fixedly connected to the inner wall of the protective cover 1 through multiple No. 3 springs 34, and a vibration motor 31 is fixedly connected to one end of the screening frame 30. Two support frames 28 are fixedly connected to the inside of the protective cover 1 and below the screening frame 30. A discharge plate 35 is fixedly connected to one side of the support frame 28. The driving part is respectively installed on the sides of the two support frames 28. The driving part includes a transmission belt assembly 29 installed on the side of the support frame 28, and a driving motor 36 is fixedly connected to one side of the support frame 28. The output end of the driving motor 36 is transmission-connected to the transmission belt assembly 29. A cross bar is fixedly connected to the transmission belts of the two transmission belt assemblies 29, and a separation push rod 32 is fixedly connected to the cross bar. An elastic plate 33 is installed on the outer side of the separation push rod 32 for pushing the filtered large-particle candies.

[0038] It should be noted that the vibration motor 31 of the present invention drives the screening frame 30 to vibrate up and down under the action of the No. 3 spring 34, and the candy hot air No. 2 belt conveyor 8 falls into the end of the screening frame 30 close to the driving motor 36, and rolls from top to bottom from one end of the screening frame 30. During the rolling process, the small particles fall along the through groove in the middle of the screening frame 30 in coordination with the vibration of the screening frame 30, and the large particles roll down to the bottom corner of the screening frame 30. The driving motor 36 drives the transmission belt assembly 29 to work, and the transmission belt assembly 29 includes two pulleys and A transmission belt is sleeved on the outside of the two pulleys for transmitting the two pulleys. The driving motor 36 drives the transmission belt to rotate through the pulleys. The transmission belt drives the separation push rod 32 to slide along the through slot of the screening frame 30 through the cross bar. The elastic plate 33 is a plastic spring sheet, which can push the candies placed between the two through slots into the through slot. Under the action of the transmission belt assembly 29, the separation push rod 32 moves obliquely from bottom to top along the through slot, and the large-particle sugar powder that has not passed through the through slot is pushed out from the top of the screening frame 30 and falls into the discharge plate 35 for centralized recovery.

[0039] like Figure 4 As shown, the recovery drawer 10 is internally slidably connected with a discharge push plate 12, one side of the discharge push plate 12 is fixedly connected to a connecting rod 11 for driving the discharge push plate 12, and one side of the protective cover 1 is detachably mounted with a recovery slot 13 corresponding to the recovery drawer 10.

[0040] It should be noted that the powdered sugar of the present invention falls into the corresponding discharge push plate 12 through the No. 1 belt conveyor 7 or the No. 2 belt conveyor 8. When the powdered sugar needs to be centrally recovered, the connecting rod 11 is pulled outward, and the connecting rod 11 pulls the discharge push plate 12 to push the powdered sugar inside the recovery drawer 10 into the recovery tank 13, and the powdered sugar is centrally collected through the recovery tank 13.

[0041] like Figure 5As shown, one end of the bottom of the No. 3 belt conveyor 9 is fixedly connected to a No. 1 limit rod 20, the bottom of the No. 1 limit rod 20 is fixedly connected to a No. 1 cross plate 21, the No. 1 shaking material trough 19 is slidably connected to the outside of the No. 1 limit rod 20, and a No. 1 spring 22 is sleeved on the outside of the No. 1 limit rod 20 and located above the No. 1 shaking material trough 19, the top of the No. 1 cross plate 21 is fixedly connected to the bottom of the No. 1 shaking material trough 19 and is correspondingly provided with an electromagnet 23, and the two electromagnets 23 have the same magnetic poles when energized, so the bottom of the No. 1 shaking material trough 19 is fixedly connected to a No. 2 limit rod 25, the bottom of the No. 2 limit rod 25 is fixedly connected to a No. 2 cross plate 24, the outside of the No. 2 limit rod 25 is slidably connected to the No. 2 shaking material trough 26, and the outside of the No. 2 limit rod 25 and located above the No. 2 cross plate 24 is sleeved with a No. 2 spring 27.

[0042] It should be noted that the present invention is equipped with a PLC controller and a timer, which control the intermittent power supply of the electromagnet 23 through the PLC controller and the timer. When the electromagnet 23 is energized, the two electromagnets 23 have the same magnetic poles. Under the action of repulsion, the No. 1 shaking trough 19 moves downward and compresses the No. 1 spring 22. When the electromagnet 23 is de-energized, the No. 1 spring 22 pushes the No. 1 shaking trough 19 to move downward along the No. 1 limit rod 20, thereby realizing the reciprocating up and down movement of the No. 1 shaking trough 19 in a cycle, and the No. 1 shaking trough 19 drives the No. 2 limit rod 25 to move up and down, and the No. 2 limit rod 25 cooperates with the No. 2 spring 27 to drive the No. 2 shaking trough 26 to move up and down, thereby giving the candy a last bumpy vibration, so that the candies stuck together are shaken apart.

[0043] like Figure 1 , 2 As shown in Figures 9 and 9 , a support base 37 is fixedly connected to the bottom of the protective cover 1 .

[0044] It should be noted that the support base 37 of the present invention includes a lower support leg with a self-locking wheel at the bottom, an upper support leg is slidably installed inside the lower support leg, the upper support leg is connected to the protective cover 1 through a rotating shaft, an upper crossbeam is fixed between the upper support legs, a lower crossbeam is fixed between the lower support legs, a threaded rod is rotatably connected to the bottom of the upper crossbeam, the threaded rod is threadedly connected to the lower crossbeam, and the height of the equipment is adjusted by rotating the threaded rod.

[0045] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0047] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conveying device for low-temperature packaging of vitamin C candies, characterized in that: include: A protective cover (1), the protective cover (1) being a cavity with an n-shaped structure, the outer side of the protective cover (1) being provided with a plurality of cooling parts, the cooling parts comprising a T-shaped fin (5) on which a semiconductor cooling sheet (4) is mounted and a fan (3) blowing air toward the T-shaped fin (5), for cooling the interior of the protective cover (1); A multi-stage conveying mechanism, the multi-stage conveying mechanism is placed inside the protective cover (1), the multi-stage conveying mechanism comprises a plurality of conveyors arranged up and down, a brush roller (14) is provided inside the protective cover (1) for moving candies on the conveyor, and a recovery drawer (10) is provided inside the protective cover (1) and below the conveyor for recovering excess sugar powder; A selection and separation mechanism is arranged at the end of the conveyor located in the middle, the selection and separation mechanism comprises a screening frame (30) of a V-shaped structure, a plurality of through slots for screening are equidistantly provided in the middle of the screening frame (30), a separation push rod (32) is slidably connected in the through slot, a driving part is provided at the bottom of the separation push rod (32), the candies are rolled downward along the through slots on the screening frame (30) to complete screening, and the separation push rod (32) reciprocates from bottom to top in the through slots to push out candies that cannot be filtered from the top; A first shaking trough (19), which is disposed at the end of the bottom conveyor and is used for shaking up and down to prevent candies from sticking; The conveyor comprises a No. 1 belt conveyor (7), a No. 2 belt conveyor (8) and a No. 3 belt conveyor (9), wherein the No. 1 belt conveyor (7), the No. 2 belt conveyor (8) and the No. 3 belt conveyor (9) are arranged in an up-and-down staggered manner, a plurality of brush rollers (14) are provided and are placed above the No. 1 belt conveyor (7), and a feed hopper (6) is fixedly connected to one end of the protective cover (1) and is located above the No. 1 belt conveyor (7); One end of the bottom of the No. 3 belt conveyor (9) is fixedly connected to a No. 1 limit rod (20), the bottom of the No. 1 limit rod (20) is fixedly connected to a No. 1 cross plate (21), the No. 1 shaking material trough (19) is slidably connected to the outside of the No. 1 limit rod (20), a No. 1 spring (22) is sleeved on the outside of the No. 1 limit rod (20) and located above the No. 1 shaking material trough (19), and the top of the No. 1 cross plate (21) is fixedly connected to the No. 1 shaking material trough (19). An electromagnet (23) is correspondingly arranged at the bottom. When the two electromagnets (23) are energized, their magnetic poles are the same. A second limiting rod (25) is fixedly connected to the bottom of the No. 1 material shaking groove (19). A second horizontal plate (24) is fixedly connected to the bottom of the No. 2 limiting rod (25). The outer side of the No. 2 limiting rod (25) is slidably connected to the No. 2 material shaking groove (26). A second spring (27) is sleeved on the outer side of the No. 2 limiting rod (25) and located above the No. 2 horizontal plate (24).

2. A conveying device for low-temperature packaging of vitamin C candies according to claim 1, characterized in that: The cooling unit further comprises a cylindrical cover (2) fixedly connected to the outside of the protective cover (1), the fan (3) being fixedly connected to the outside of the cylindrical cover (2), the T-shaped fins (5) being evenly inserted into the inside of the cylindrical cover (2) with the center of the cylindrical cover (2) as the center, and the cylindrical cover (2) and the protective cover (1) are both provided with corresponding ventilation holes.

3. A conveying device for low-temperature packaging of vitamin C candies according to claim 2, characterized in that: A recovery box (16) is fixedly connected to the bottom of the No. 1 belt conveyor (7), a cleaning scraper (17) and a cleaning brush (18) are fixedly connected inside the recovery box (16), and the cleaning scraper (17) and the cleaning brush (18) are both slidably connected to the conveyor belt of the No. 1 belt conveyor (7).

4. The conveying device for low-temperature packaging of vitamin C candy according to claim 1, characterized in that: The screening frame (30) is fixedly connected to the inner wall of the protective cover (1) via a plurality of No. 3 springs (34), and a vibration motor (31) is fixedly connected to one end of the screening frame (30).

5. The conveying device for low-temperature packaging of vitamin C candy according to claim 1, characterized in that: Two support frames (28) are fixedly connected inside the protective cover (1) and below the screening frame (30); a discharge plate (35) is fixedly connected to one side of the support frame (28); the driving unit is respectively installed on the sides of the two support frames (28); the driving unit includes a transmission belt assembly (29) installed on the side of the support frame (28); a driving motor (36) is fixedly connected to one side of the support frame (28); an output end of the driving motor (36) is transmission-connected to the transmission belt assembly (29); a cross bar is fixedly connected to the transmission belts of the two transmission belt assemblies (29); and the separation push rod (32) is fixedly connected to the cross bar.

6. The conveying device for low-temperature packaging of vitamin C candies according to claim 5, characterized in that: An elastic plate (33) is installed on the outer side of the separation push rod (32) for pushing the filtered large-particle candies.

7. The conveying device for low-temperature packaging of vitamin C candy according to claim 1, characterized in that: The recycling drawer (10) is internally slidably connected to a discharging push plate (12), one side of the discharging push plate (12) is fixedly connected to a connecting rod (11) for driving the discharging push plate (12), and one side of the protective cover (1) is detachably mounted with a recycling groove (13) corresponding to the recycling drawer (10).

8. The conveying device for low-temperature packaging of vitamin C candy according to claim 1, characterized in that: A supporting base (37) is fixedly connected to the bottom of the protective cover (1).

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