A conveyor for processing of cooked food quick-frozen products

Abstract

The present application relates to the technical field of quick-frozen food conveying, in particular to a conveyor for cooked food quick-frozen food processing, which comprises a freezing tunnel and a conveying belt penetrating through the freezing tunnel, the conveying belt being used to move the packaging box containing cooked food quick-frozen food; a poking assembly is arranged on the conveying belt, the poking assembly forms a guide channel on the upper part of the conveying belt, and the guide channel is in the shape of "S". The present application avoids the situation that the packaging box stays at a single position for a long time, thereby preventing the situation that the packaging box is adhered to the conveying belt due to the condensation of water vapor caused by the low-temperature and high-humidity environment in the freezing tunnel, and solving the problems of the existing conveyor, such as difficult unloading, easy falling or entering the internal part of the equipment of the packaging box, and easy damage of the conveying belt.

Description

Technical Field

[0001] This invention relates to the field of frozen food conveying technology, specifically to a conveyor for processing cooked frozen foods. Background Technology

[0002] In existing cooked food and frozen food processing, cooked food is packaged after cooking, and quick-freezing is carried out in two ways: one is to quick-freeze first and then transport; the other is to transport directly and quick-freeze the cooked food during transport. The mainstream method is to quick-freeze the cooked food (which is already packaged in boxes) during transport because it is more efficient and can meet production demands. In the second method, the equipment structure mainly consists of a conveyor belt and a freezing tunnel. The conveyor belt runs through the freezing tunnel (which is equipped with a refrigeration unit, maintaining a low temperature and high humidity environment). The conveyor belt carries the quick-frozen food from one end of the freezing tunnel into the freezing tunnel and exits from the other end.

[0003] For example, Chinese Patent Publication No. CN102483279B discloses a continuous freezing device for food with the above-described structure. This device is used to freeze food that is continuously supplied from a supply section towards a discharge section. The continuous freezing device for food includes: a mesh first conveyor, one end of which is positioned on the supply section and conveys the food from one end to the other along a first direction; and a second conveyor, which extends directly below the mesh first conveyor along the mesh first conveyor and along a direction opposite to the first direction. A bidirectional conveyor for transporting food falling from the other end of the first mesh conveyor; a coolant tank, directly below the second conveyor and storing coolant for freezing the food falling from the second conveyor; a third conveyor, at least partially immersed in the coolant in the coolant tank, conveying the food falling from the second conveyor while immersing it in the coolant in the coolant tank; and a coolant spraying device, directly above the first mesh conveyor and spraying the coolant toward the first mesh conveyor.

[0004] However, equipment that freezes food during transport has the following problems: Since cooked frozen food is still warm when placed on the conveyor belt, when the conveyor belt carries the cooked frozen food into the freezing tunnel, the low temperature and high humidity environment in the freezing tunnel will cause water vapor to accumulate and form droplets at or around the contact point between the cooked frozen food packaging and the conveyor belt. When the cooked frozen food passes through the freezing tunnel under the drive of the conveyor belt, the droplets condense, causing the outer packaging of the cooked frozen food to stick to the surface of the conveyor belt, which in turn makes unloading difficult. There is a risk that the cooked food may fall off or enter the equipment with the conveyor belt if it is not unloaded in time. In addition, the process of separating the outer packaging of the cooked frozen food from the conveyor belt can also damage the conveyor belt. In addition, ice crystals will remain on the surface of the conveyor belt. With prolonged use, the ice crystals will gradually accumulate. During feeding and conveying, the outer packaging of cooked and frozen foods is prone to slipping on the surface of the conveyor belt, resulting in poor conveying stability. Furthermore, the accumulation of ice crystals will increase the weight on the outside of the conveyor belt, leading to increased load on the conveyor and higher energy consumption. Summary of the Invention

[0005] To address the aforementioned problems, a conveyor for processing cooked and frozen foods is provided. By installing a toggle component on the conveyor belt, an "S"-shaped guide channel is formed at the top of the conveyor belt. This allows the packaging boxes to move back and forth at the top of the conveyor belt as the conveyor belt drives the boxes into the freezing tunnel. This effectively prevents the boxes from staying in one position for an extended period of time, thus preventing the boxes from sticking to the conveyor belt due to condensation caused by the low temperature and high humidity environment inside the freezing tunnel. This solves the problems of difficult unloading, boxes easily falling off or entering the equipment, and easy damage to the conveyor belt in existing conveyors.

[0006] To address the problems of the prior art, the present invention provides a conveyor for processing cooked and frozen foods, including a freezing tunnel and a conveyor belt passing through the freezing tunnel, wherein the conveyor belt is used to move packaging boxes containing cooked and frozen foods.

[0007] The conveyor belt is equipped with a toggle assembly, which forms a guide channel on the upper part of the conveyor belt. The guide channel is S-shaped.

[0008] Preferably, the actuating assembly includes multiple actuating plates, each of which is divided into two groups of actuating parts. The two groups of actuating parts are respectively disposed on both sides of the conveyor belt, and the actuating plates in the two groups of actuating parts are staggered and inclined towards each other.

[0009] Preferably, each of the two sets of actuating parts is provided with a linear driver on one side for driving the two sets of actuating parts to move away from or towards each other in the horizontal direction.

[0010] Preferably, multiple conveyor belts are arranged horizontally, with gaps between adjacent conveyor belts. Multiple support rods are arranged in the gaps along the extension direction of the freezing tunnel. All support rods have rotatable balls mounted on their upper parts. The upper end of each ball is horizontally higher than the upper surface of the conveyor belt. All the balls together form a support end face that supports the packaging box. The projection of the support end face in the vertical direction is called the first projection, and the projection of the guide channel in the vertical direction is called the second projection. The first projection covers the second projection.

[0011] Preferably, the support end face has a lifting area, a conveying area and a lowering area along the extension direction of the freezing tunnel. The support end face in the lifting area is inclined upward, the support end face in the conveying area is horizontal, and the support end face in the lowering area is inclined downward.

[0012] Preferably, a plurality of push plates are evenly arranged around the periphery of the conveyor belt, and the height of the push plates is higher than the horizontal height of the support end face at the conveying area.

[0013] Preferably, the pusher plate is made of a low-temperature resistant hydrophobic material.

[0014] Preferably, the inner ring side of the conveyor belt is provided with:

[0015] The conveyor belt has two drive wheels, each of which is engaged with the inner ring side of the conveyor belt. The arrangement of the two drive wheels is parallel to the horizontal plane.

[0016] A heating wheel is disposed below the drive wheel and engages with the inner ring side of the conveyor belt for transmission. The heating wheel has a built-in electric heating component.

[0017] Preferably, a valve body is provided on the side wall of the freezing tunnel, and the valve body is lower than the lower horizontal level of the conveyor belt.

[0018] Preferably, the two ends of the conveyor belt extend from the two ends of the freezing tunnel to form a loading area and a unloading area, and a supporting shaft is provided at the lower part of the conveyor belt located in the loading area and the unloading area.

[0019] The advantages of this invention compared to the prior art are:

[0020] 1. This invention, by setting a toggle component on the conveyor belt, forms an "S"-shaped guide channel at the top of the conveyor belt. This allows the packaging box to move back and forth at the top of the conveyor belt as it enters the freezing tunnel. This effectively prevents the packaging box from staying in one position for a long time, thus preventing the packaging box from sticking to the conveyor belt due to water vapor condensation caused by the low temperature and high humidity environment inside the freezing tunnel. This solves the problems of difficult unloading, easy falling or entering the equipment, and easy damage to the conveyor belt in existing conveyors. At the same time, it reduces the ice crystal residue on the surface of the conveyor belt, preventing the outer packaging of cooked and frozen foods from slipping on the conveyor belt due to ice crystal residue. This improves the stability of the conveyor, reduces the load on the rotary drive and the energy consumption of the equipment, and ensures the normal and stable operation of the conveyor.

[0021] 2. By configuring the actuating components into a structure with multiple sets of actuating plates arranged in a staggered, opposing direction, and using a linear driver to adjust the distance between the two sets of actuating parts, the width of the S-shaped guide channel can be flexibly adjusted according to the actual size of the cooked food packaging box. This adapts to the conveying needs of different packaging box specifications, effectively avoiding problems such as packaging box offset due to excessively wide channels and jamming and wear caused by excessively narrow channels. At the same time, the staggered, inclined actuating plate structure can provide stable limiting guidance for the packaging box, preventing offset and jamming during reciprocating movement, improving the smoothness of the conveying process, reducing mechanical wear between the conveyor belt and the packaging box, and broadening the application range of the conveyor to adapt to various cooked food quick-freezing processing production scenarios.

[0022] 3. By employing multiple conveyor belts combined with support rods and ball bearings to form a fully covered support end face, and designing the support end face into a three-section inclined structure of lifting, conveying, and lowering zones, and simultaneously installing low-temperature resistant, hydrophobic push plates on the periphery of the conveyor belts, the packaging boxes can be separated from the conveyor belt surface. The rolling action of the ball bearings reduces moving friction resistance, fundamentally preventing water vapor condensation and adhesion. The segmented support end face can gradually lift and lower the packaging boxes, reducing heat transfer and the probability of frost formation, ensuring uniform freezing. The push plates prevent the packaging boxes from slipping and stopping in the inclined areas, and the push plates are made of low-temperature resistant, hydrophobic material to prevent frost adhesion on the push plate surface, comprehensively improving conveying stability, freezing quality, and equipment lifespan. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a conveyor for processing cooked and frozen foods according to the present invention.

[0024] Figure 2 This is a partially cross-sectional perspective view of a conveyor for processing cooked and frozen foods according to the present invention.

[0025] Figure 3 This invention relates to a conveyor for processing cooked and frozen foods. Figure 2 A magnified view of a portion of point A in the middle.

[0026] Figure 4 This is a side view of a conveyor for processing cooked and frozen foods according to the present invention.

[0027] Figure 5 This invention relates to a conveyor for processing cooked and frozen foods. Figure 4 Schematic diagram of cross-section at point BB.

[0028] Figure 6 This is a three-dimensional schematic diagram of a conveyor for processing cooked and quick-frozen foods according to the present invention after the freezing tunnel has been removed.

[0029] Figure 7 This is a partial cross-sectional three-dimensional schematic diagram of a conveyor for processing cooked and quick-frozen foods according to the present invention after the freezing tunnel has been removed.

[0030] Figure 8 This invention relates to a conveyor for processing cooked and frozen foods. Figure 7 A magnified view of a portion of point C.

[0031] Figure 9 This is a side view of the support end face of a conveyor for processing cooked and frozen foods according to the present invention, which includes a lifting zone, a conveying zone, and a lowering zone.

[0032] Figure 10 This invention relates to a conveyor for processing cooked and frozen foods. Figure 9 A magnified view of a portion of point D.

[0033] The diagram is labeled as follows: 1. Freezing tunnel; 11. Valve body; 2. Conveyor belt; 21. Rotary drive; 22. Push plate; 23. Drive wheel; 24. Heating wheel; 25. Loading area; 26. Unloading area; 27. Support shaft; 3. Actuating assembly; 31. Actuating plate; 32. Linear drive; 4. Packaging box; 5. Support rod; 51. Ball bearing; 6. Lifting area; 7. Conveying area; 8. Lowering area. Detailed Implementation

[0034] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figures 1 to 3 A conveyor for processing cooked and frozen food includes a freezing tunnel 1 and a conveyor belt 2 passing through the freezing tunnel 1. The conveyor belt 2 is used to move a packaging box 4 containing cooked and frozen food.

[0036] The conveyor belt 2 is provided with a toggle component 3, which forms a guide channel on the upper part of the conveyor belt 2. The guide channel is "S" shaped.

[0037] A rotary driver 21 is disposed on one side of the conveyor belt 2 and is used to drive the conveyor belt 2 to rotate. The rotary driver 21 is preferably a servo motor.

[0038] By setting the guide channel to an "S" shape, when the conveyor belt 2 drives the packaging box 4 into the freezing tunnel 1, the packaging box 4 can move back and forth on the upper part of the conveyor belt 2. Because the packaging box 4 moves back and forth during the conveying process, it avoids the packaging box 4 from staying in one position for a long time, which would cause water vapor to condense and stick to the conveyor belt 2.

[0039] When using this conveyor for processing cooked and frozen food, first start the rotary drive 21, which drives the conveyor belt 2 to start rotating. Then, place the packaging box 4 containing the cooked and frozen food on the conveyor belt 2. The conveyor belt 2 moves the packaging box 4 containing the cooked and frozen food towards the freezing tunnel 1. After the packaging box 4 enters the freezing tunnel 1, it will enter the guide channel formed by the agitator 3 on the conveyor belt 2. Since the guide channel is "S" shaped, the packaging box 4 moves along the guide channel under the drive of the conveyor belt 2, and then reciprocates on the upper part of the conveyor belt 2 until the packaging box 4 passes through the freezing tunnel 1 under the drive of the conveyor belt 2, completing the freezing and conveying process.

[0040] By setting a toggle component 3 on the conveyor belt 2, an "S"-shaped guide channel is formed on the upper part of the conveyor belt 2. When the conveyor belt 2 drives the packaging box 4 into the freezing tunnel 1, the packaging box 4 can move back and forth on the upper part of the conveyor belt 2. This effectively avoids the packaging box 4 from staying in one position for a long time, thus preventing the packaging box 4 from sticking to the conveyor belt 2 due to water vapor condensation caused by the low temperature and high humidity environment in the freezing tunnel 1. This solves the problems of difficult unloading of existing conveyors, easy falling or entering the equipment interior of the packaging box 4, and easy damage to the conveyor belt 2. At the same time, it reduces the ice crystal residue on the surface of the conveyor belt 2, prevents the outer packaging of cooked and frozen food from slipping on the conveyor belt 2, improves the conveying stability, reduces the load on the rotary drive 21 and the energy consumption of the equipment, and ensures the normal and stable operation of the conveyor.

[0041] Reference Figure 2 , Figure 3 , Figure 5 and Figure 6 The actuating assembly 3 includes multiple actuating plates 31, each of which is divided into two groups of actuating parts. The two groups of actuating parts are respectively arranged on both sides of the conveyor belt 2, and the actuating plates 31 in the two groups of actuating parts are staggered and inclined towards each other.

[0042] The total number of actuating plates 31 can be even or odd. If the total number of actuating plates 31 is odd, there will be one extra actuating plate 31 after the two sets of actuating parts are divided equally. The actuating plate 31 can be arbitrarily assigned to one of the sets of actuating parts, as long as the actuating plates 31 in the two sets of actuating parts are staggered. If the total number of actuating plates 31 is even, the number of actuating plates 31 in the two sets of actuating parts will be the same after the equal division. The staggered distribution is still adopted. Through the staggered distribution of the actuating plates 31 in the two sets of actuating parts, the guide channel is always in an "S" shaped structure.

[0043] During the operation of the conveyor, the actuating component 3 forms the guide channel through multiple actuating plates 31. The multiple actuating plates 31 are divided into two groups and are respectively set on both sides of the conveyor belt 2. The actuating plates 31 in the two groups are staggered and inclined towards each other. This arrangement can form an "S"-shaped guide channel, ensuring that after the packaging box 4 enters the freezing tunnel 1 under the drive of the conveyor belt 2, it can move back and forth along the "S"-shaped guide channel on the upper part of the conveyor belt 2, avoiding the packaging box 4 from staying in one position for a long time. This effectively solves the technical problem of the packaging box 4 sticking to the conveyor belt 2 due to water vapor condensation in the low temperature and high humidity environment in the freezing tunnel 1. At the same time, this staggered and inclined structure can provide stable guidance for the packaging box 4, preventing the packaging box 4 from deviating or getting stuck during the reciprocating movement, ensuring the smoothness of the conveying process, further improving the conveying stability, reducing the wear of the conveyor belt 2 and the packaging box 4, and reducing equipment energy consumption.

[0044] Reference Figure 6 and Figure 7 Each of the two sets of actuating parts is provided with a linear driver 32 on one side for driving the two sets of actuating parts to move away from or closer to each other in the horizontal direction.

[0045] Before using the conveyor, the two sets of actuating parts can be driven by the linear driver 32 to move away from or closer to each other in the horizontal direction according to the size of the packaging box 4 containing the cooked frozen food. This adjusts the distance between the two sets of actuating parts, so that the width of the "S"-shaped guide channel formed by the actuating plate 31 matches the size of the packaging box 4. This solves the problem that the existing guide channel width is fixed and cannot adapt to packaging boxes 4 of different sizes. It ensures that packaging boxes 4 of different sizes can move back and forth smoothly in the guide channel, avoiding the packaging box 4 from shifting due to the guide channel being too wide or jamming or wearing due to the guide channel being too narrow. At the same time, it improves the versatility of the conveyor, adapts to the processing needs of cooked frozen food of different specifications, and ensures the stability of freezing and conveying effects.

[0046] Reference Figure 3 and Figure 10Multiple conveyor belts 2 are arranged horizontally, with gaps between adjacent conveyor belts 2. Multiple support rods 5 are arranged in the gaps along the extension direction of the freezing tunnel 1. All support rods 5 have rotatable balls 51 on their upper parts. The upper end of each ball 51 is horizontally higher than the upper surface of the conveyor belt 2. All balls 51 together form a support end face that supports the packaging box 4. The projection of the support end face in the vertical direction is called the first projection, and the projection of the guide channel in the vertical direction is called the second projection. The first projection covers the second projection.

[0047] During conveyor operation, multiple conveyor belts 2 are arranged horizontally and rotate synchronously, driving the packaging boxes 4 towards the freezing tunnel 1. Since the upper horizontal height of the ball bearings 51 is higher than the upper surface horizontal height of the conveyor belts 2, the packaging boxes 4, after being placed on the conveyor belts 2, are supported by the support end face formed by the ball bearings 51, separating the packaging boxes 4 from the upper surface of the conveyor belts 2. Combined with the "S"-shaped guide channel formed by the actuating component 3, the packaging boxes 4, driven by the conveyor belts 2 and guided by the guide channel, reciprocate on the support end face. The ball bearings 51 can rotate at the upper end of the support rod 5, achieving rolling contact with the bottom of the packaging boxes 4, effectively reducing... The reduced frictional resistance during the movement of the packaging box 4 lowers the load and energy consumption of the rotary drive 21, and also prevents the ball 51 from sticking to the bottom of the packaging box 4. Simultaneously, the separation of the packaging box 4 from the conveyor belt 2 fundamentally solves the technical problem of water vapor condensation causing the packaging box 4 to stick to the conveyor belt 2, avoiding difficulties in unloading, the packaging box 4 falling off, and damage to the conveyor belt 2. The gap between adjacent conveyor belts 2 can accommodate frost falling from the bottom of the packaging box 4, reducing ice crystal residue on the surface of the conveyor belt 2 and further improving conveying stability. Frost falling from the gap between two adjacent conveyor belts 2 can be cleaned during regular conveyor maintenance. Furthermore, since the first projection covers the second projection, it ensures that the packaging box 4 is always supported by the support end face during reciprocating movement, preventing the packaging box 4 from falling into the gap and ensuring smooth conveying.

[0048] Reference Figure 9 and Figure 10 The supporting end face has a lifting area 6, a conveying area 7 and a lowering area 8 along the extension direction of the freezing tunnel 1. The supporting end face in the lifting area 6 is inclined upward, the supporting end face in the conveying area 7 is horizontal, and the supporting end face in the lowering area 8 is inclined downward.

[0049] After entering the freezing tunnel 1 under the drive of the conveyor belt 2, the packaging box 4 first enters the lifting area 6 of the support end face. The lifting area 6 is inclined upward, so that the packaging box 4 is gradually lifted during the movement, further away from the surface of the conveyor belt 2, reducing the heat transfer between the packaging box 4 and the conveyor belt 2, and reducing the probability of frost forming on the surface of the conveyor belt 2. Then the packaging box 4 enters the horizontal conveying area 7. In the conveying area 7, the packaging box 4 moves back and forth smoothly under the guidance of the guide channel, fully receiving the cooling effect in the freezing tunnel 1, ensuring uniform freezing effect, and avoiding the impact of insufficient freezing in some areas on the quality of cooked food. Finally, the packaging box 4 enters the lowering area 8. The lowering area 8 is inclined downward, so that the packaging box 4 gradually descends and smoothly transitions to the conveyor belt 2, facilitating subsequent unloading operations. This segmented support end face structure not only further solves the problem of the packaging box 4 sticking to the conveyor belt 2, but also ensures the uniformity of the freezing process and the stability of the conveying, preventing the packaging box 4 from tipping over or falling during the lifting or lowering process, improving processing efficiency and product qualification rate.

[0050] Reference Figure 8 Multiple push plates 22 are evenly arranged around the periphery of the conveyor belt 2, and the height of the push plates 22 is higher than the horizontal height of the support end face at the conveying area 7.

[0051] After the packaging box 4 enters the lifting zone 6, it may slide relative to the conveyor belt 2 if there is no driving force, since the lifting zone 6 is inclined upward. The push plates 22, which are evenly arranged around the periphery of the conveyor belt 2, are higher than the horizontal height of the support end face at the conveying zone 7. When the conveyor belt 2 rotates, the push plates 22 will move synchronously with the conveyor belt 2. When the push plates 22 come into contact with the packaging box 4, they will push the packaging box 4, which will smoothly lift the packaging box 4 from the lifting zone 6 to the conveying zone 7. In the conveying zone 7, the push plates 22 continue to push the packaging box 4 along the guide channel to ensure that the packaging box 4 moves synchronously with the conveyor belt 2. This avoids the packaging box 4 slipping or stopping on the support end face, which solves the technical problem that the packaging box 4 is easy to slide and cannot be lifted smoothly in the inclined lifting zone 6. At the same time, it ensures the stability of the packaging box 4 in the reciprocating movement of the conveying zone 7, ensures sufficient freezing time, and improves the freezing effect.

[0052] Reference Figures 1 to 10 The push plate 22 is made of a low-temperature resistant hydrophobic material.

[0053] During the process of pushing the packaging box 4, the pusher plate 22 is in the low temperature and high humidity environment of the freezing tunnel 1. Since the pusher plate 22 is made of low temperature resistant hydrophobic material, it can adapt to the low temperature environment of the freezing tunnel 1, avoid the pusher plate 22 from becoming brittle and breaking due to low temperature, and extend the service life of the pusher plate 22. On the other hand, the hydrophobic property can prevent water vapor from condensing on the surface of the pusher plate 22 to form liquid droplets and ice crystals, and prevent the pusher plate 22 from sticking to the packaging box 4 due to water vapor condensation. This ensures that the pusher plate 22 pushes the packaging box 4 stably, while reducing the ice crystal residue on the surface of the pusher plate 22, preventing the ice crystal from affecting the contact between the pusher plate 22 and the packaging box 4, preventing the packaging box 4 from slipping or deviating during the pushing process, further improving the conveying stability. Moreover, after long-term use, there will be no large amount of frost condensation on the pusher plate 22, ensuring the stable pushing action of the pusher plate 22 on the packaging box 4.

[0054] Reference Figure 7 and Figure 8 The inner ring side of the conveyor belt 2 is provided with:

[0055] Two drive wheels 23 are provided and are respectively driven and engaged with the inner ring side of the conveyor belt 2. The arrangement direction of the two conveyor drive wheels 23 is parallel to the horizontal plane.

[0056] A heating wheel 24 is disposed below the drive wheel 23 and engages with the inner ring side of the conveyor belt 2 for transmission. The heating wheel 24 has an internal electric heating component.

[0057] A rotary driver 21 is disposed at one end of one of the drive wheels 23 for driving the drive wheel 23 to rotate.

[0058] When the conveyor is running, the rotary driver 21 drives one of the drive wheels 23 to rotate. Since both drive wheels 23 are engaged with the inner ring side of the conveyor belt 2, the rotation of the drive wheel 23 will drive the conveyor belt 2 to rotate synchronously, realizing the conveying of the packaging box 4. After the conveyor belt 2 carries the packaging box 4 through the freezing tunnel 1, it will rotate into the lower part of the drive wheel 23 and engage with the heating wheel 24. The electric heating component built into the heating wheel 24 generates heat to heat the conveyor belt 2. Because the conveyor belt 2 will frost and ice up in the freezing tunnel 1 due to the low temperature and high humidity environment. The phenomenon is that the frost falling from the bottom of the packaging box 4 will adhere to the conveyor belt 2. The heat of the heating wheel 24 can reduce the adhesion between the frost and the conveyor belt 2, causing the frost to fall off on its own. This achieves the treatment of the ice crystals remaining on the surface of the conveyor belt 2, solving the technical problems of the packaging box 4 slipping, the conveyor load increasing, and the energy consumption increasing due to the accumulation of ice crystals on the surface of the conveyor belt 2. At the same time, it avoids the ice crystals from causing wear on the conveyor belt 2, extends the service life of the conveyor belt 2, and ensures that the surface of the conveyor belt 2 is clean when it rotates to the feeding area 25 again, thus ensuring the stability of feeding and conveying.

[0059] Reference Figure 1 and Figure 2 A valve body 11 is provided on the side wall of the freezing tunnel 1, and the valve body 11 is lower than the lower horizontal level of the conveyor belt 2.

[0060] During the operation of the conveyor, the frost that falls off the surface of the conveyor belt 2 gradually accumulates at the bottom of the freezing tunnel 1. A horizontal partition plate is installed in the conveyor belt 2, dividing the freezing tunnel 1 vertically into a refrigeration chamber and a circulation chamber. The valve body 11 is connected to the circulation chamber, and the bottom of the freezing tunnel 1 is the bottom of the circulation chamber. Because the temperature in the circulation chamber is close to room temperature, the falling frost gradually melts into water. The accumulated water at the bottom of the freezing tunnel 1 can be drained by opening the valve body 11, preventing water from accumulating inside the freezing tunnel 1.

[0061] Reference Figure 4 , Figure 6 and Figure 7 The two ends of the conveyor belt 2 extend from the two ends of the freezing tunnel 1 to form a loading area 25 and a unloading area 26, respectively. A support shaft 27 is provided at the lower part of the conveyor belt 2 located in the loading area 25 and the unloading area 26.

[0062] When the conveyor is running, workers or the feeding device place the packaging boxes 4 containing cooked frozen food into the feeding area 25 of the conveyor belt 2. The unloading area 26 is used by workers or the unloading device for unloading operations. Since the packaging boxes 4 contain cooked frozen food and have a certain weight, placing them in the feeding area 25 or the unloading area 26 will exert downward pressure on the conveyor belt 2. The support shafts 27 set at the bottom of the conveyor belt 2 in the feeding area 25 and the unloading area 26 can support the conveyor belt 2, preventing the conveyor belt 2 from bending downward due to the weight of the packaging boxes 4. This solves the technical problem of the conveyor belt 2 deforming, aggravating wear, and shortening service life due to long-term bearing of weight. At the same time, it ensures that the conveyor belt 2 remains stable during the loading and unloading process, preventing the packaging boxes 4 from tipping over or falling due to the bending of the conveyor belt 2, ensuring smooth loading and unloading processes, improving processing efficiency, and reducing the loss of cooked food.

[0063] Working principle: Before use, parameters are set. The size of the packaging box 4 used to hold cooked frozen food is input into the conveyor, and the type of cooked frozen food is input, such as pasta, meat, stir-fried dishes, seafood, etc. This is because different foods have different freezing times. By inputting the food type, the conveyor can adjust the cooling power of the freezing tunnel 1 and the conveying speed of the conveyor belt 2 according to the food type to ensure the freezing effect.

[0064] After parameter adjustments are completed, the conveyor is started. Workers or a feeding device place the packaging box 4 containing cooked frozen food onto the conveyor belt 2. At this time, the packaging box 4 is located in the feeding area 25 of the conveyor belt 2. Since the packaging box 4 contains cooked frozen food and has a certain weight, support shafts 27 are installed at the bottom of the conveyor belt 2 in both the feeding area 25 and the unloading area 26. These support shafts 27 support the conveyor belt 2, preventing it from bending downwards when the packaging box 4 is placed on it, thus avoiding strain on the conveyor belt 2 due to the weight of the packaging box 4 and extending its service life. The conveyor belt 2 is in continuous operation at this time. The actual overall length of the conveyor is quite long; however, for ease of understanding and demonstration, the length shown in the illustrations of this invention is shorter. The packaging box 4, placed on the conveyor belt 2, enters the freezing tunnel 1 under the drive of the conveyor belt 2, and first enters the lifting area 6, which is supported by the ball bearings 51. The support end face of the lifting area 6 is inclined upward. If the push plate 22 on the conveyor belt 2 is not in contact with the packaging box 4 at this time, the packaging box 4 will slide relative to the upper surface of the conveyor belt 2 due to the lifting effect of the lifting area 6. As the conveyor belt 2 moves, the push plate 22 comes into contact with the packaging box 4. Under the pushing action of the push plate 22, the packaging box 4 can be smoothly lifted from the lifting area 6 to the conveying area 7 and move horizontally in the conveying area 7. At this time, the conveyor belt 2 no longer has a pushing effect on the packaging box 4. The conveyor belt 2 needs to indirectly push the packaging box 4 through the push plate 22. The packaging box 4 is still As the conveyor belt 2 moves synchronously, the packaging box 4 is guided by the actuating plate 31 in the actuating component 3 during its movement. While moving along the extension direction of the freezing tunnel 1, the packaging box 4 also reciprocates along the width direction of the freezing tunnel 1. The reciprocating movement of the packaging box 4 can prevent the bottom of the packaging box 4 from sticking to the ball 51 due to water vapor condensation. After the packaging box 4 is lifted by the lifting area 6, the packaging box 4 will not rub against the upper surface of the conveyor belt 2 during its reciprocating motion, reducing the wear on the surface of the conveyor belt 2. In addition, the rolling cooperation between the ball 51 and the packaging box 4 results in a small coefficient of friction and less resistance when the packaging box 4 reciprocates in the support end face. The load on the rotary drive 21 used to drive the rotation of the conveyor belt 2 is also smaller, reducing energy consumption.

[0065] After the packaging box 4 has completely passed through the freezing tunnel 1 under the indirect pushing action of the conveyor belt 2 via the push plate 22, the packaging box 4 enters the unloading area 26 of the conveyor belt 2, where it is unloaded by workers or unloading devices. The conveyor belt 2 then re-enters the inside of the conveyor, i.e., the lower part of the freezing tunnel 1. It is worth noting that a partition plate is horizontally installed in the conveyor belt 2, which divides the freezing tunnel 1 vertically into a refrigeration chamber and a circulation chamber. The upper part of the conveyor belt 2 is in the refrigeration chamber. After passing through the refrigeration chamber, the conveyor belt 2 enters the circulation chamber. However, no cold air is filled into the circulation chamber, so the temperature in the circulation chamber is higher than that in the refrigeration chamber. The heating wheel 24 is installed in the circulation chamber, and the conveyor belt 2 is wound around the lower part of the heating wheel 24 and drives the heating wheel 24. When the packaging box 4 enters the freezing tunnel 1, although it will pass through the lifting zone 6 and separate from the conveyor belt 2, the initial temperature difference between the packaging box 4 and the temperature in the freezing chamber is large, and the humidity in the freezing chamber is high. Therefore, the heat of the packaging box 4 will diffuse to the surface of the conveyor belt 2, causing frost to form on the surface of the conveyor belt 2. In addition, frost and ice will also form on the outside of the packaging box 4 during the cooling process. However, as the packaging box 4 moves back and forth, the frost at its bottom can fall onto the conveyor belt 2 or into the gaps of the adjacent conveyor belt 2. Therefore, the frost falling onto the conveyor belt 2 will further increase the surface frost of the conveyor belt 2. The thickness of the ice on the surface is such that when the conveyor belt 2 moves from the refrigeration chamber to the circulation chamber, it first passes through a drive wheel 23. At this time, the outer surface of the conveyor belt 2 bends when it passes through the drive wheel 23, causing large pieces of frost to fall off, leaving only a few pieces of frost on the conveyor belt 2. When the conveyor belt 2 passes through the heating wheel 24, the heating wheel 24 heats the conveyor belt 2 with heat, reducing the adhesion between the frost and the conveyor belt 2 and eventually causing it to fall off on its own. As needed, multiple heating wheels 24 can be set to heat the conveyor belt 2. After being cleaned by the heating wheel 24, the conveyor belt 2 passes through the circulation chamber and rotates again to the feeding area 25 to wait for feeding.

[0066] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A conveyor for processing cooked frozen food, comprising a freezing tunnel (1) and a conveyor belt (2) passing through the freezing tunnel (1), the conveyor belt (2) being used to move a packaging box (4) containing cooked frozen food; Its features are, An actuating component (3) is provided on the conveyor belt (2), and the actuating component (3) forms a guide channel on the upper part of the conveyor belt (2), and the guide channel is "S" shaped; The actuation assembly (3) includes multiple actuation plates (31), each of which is divided into two groups of actuation parts. The two groups of actuation parts are respectively arranged on both sides of the conveyor belt (2). The actuation plates (31) in the two groups of actuation parts are staggered and inclined towards each other.

2. The conveyor for processing cooked and frozen foods according to claim 1, characterized in that, Each of the two sets of actuating parts is provided with a linear actuator (32) on one side for driving the two sets of actuating parts to move away from or towards each other in the horizontal direction.

3. A conveyor for processing cooked and quick-frozen foods according to claim 1 or 2, characterized in that, Multiple conveyor belts (2) are arranged horizontally, and there is a gap between two adjacent conveyor belts (2). Multiple support rods (5) are arranged in the gap along the extension direction of the freezing tunnel (1). All the support rods (5) are rotatably equipped with balls (51) on their upper parts. The upper end of the balls (51) is horizontally higher than the upper surface of the conveyor belts (2). All the balls (51) together form a support end face that supports the packaging box (4). The projection of the support end face in the vertical direction is called the first projection, and the projection of the guide channel in the vertical direction is called the second projection. The first projection covers the second projection.

4. The conveyor for processing cooked and quick-frozen foods according to claim 3, characterized in that, The support end face has a lifting area (6), a conveying area (7) and a lowering area (8) along the extension direction of the freezing tunnel (1). The support end face in the lifting area (6) is inclined upward, the support end face in the conveying area (7) is horizontal, and the support end face in the lowering area (8) is inclined downward.

5. A conveyor for processing cooked and quick-frozen foods according to claim 4, characterized in that, Multiple push plates (22) are evenly arranged around the periphery of the conveyor belt (2), and the height of the push plates (22) is higher than the horizontal height of the support end face at the conveying area (7).

6. A conveyor for processing cooked and quick-frozen foods according to claim 5, characterized in that, The push plate (22) is made of a low-temperature resistant hydrophobic material.

7. The conveyor for processing cooked and quick-frozen foods according to claim 1, characterized in that, The inner ring side of the conveyor belt (2) is provided with: Two drive wheels (23) are provided and are respectively driven and engaged with the inner ring side of the conveyor belt (2). The arrangement direction of the two conveyor drive wheels (23) is parallel to the horizontal plane. A heating wheel (24) is disposed at the lower part of the drive wheel (23) and drives the inner ring side of the conveyor belt (2). The heating wheel (24) has an electric heating component built in it.

8. The conveyor for processing cooked and quick-frozen foods according to claim 1, characterized in that, A valve body (11) is provided on the side wall of the freezing tunnel (1), and the valve body (11) is lower than the lower horizontal height of the conveyor belt (2).

9. A conveyor for processing cooked and quick-frozen foods according to claim 1, characterized in that, The two ends of the conveyor belt (2) extend from the two ends of the freezing tunnel (1) respectively to form a loading area (25) and a unloading area (26). The lower part of the conveyor belt (2) located in the loading area (25) and the unloading area (26) is provided with a support shaft (27).

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