A thaw-resistant conveyor for use in the production of quick-frozen food products and a method of using the same

Abstract

This invention relates to the field of food conveying technology, and in particular to an anti-thawing conveying device and its usage method for quick-frozen food production, comprising a support frame; a temperature difference generation module, a low-temperature embrittlement cleaning module, and a pre-cooling module fixedly connected to the support frame are arranged below the quick-frozen product conveying equipment, and a dry ice particle guide frame is connected below the low-temperature embrittlement cleaning module; the temperature difference generation module can perform controllable local heating pretreatment on the surface of the conveyor belt of the quick-frozen product conveying equipment; when the conveyor belt runs to the position of the low-temperature embrittlement cleaning module, the dry ice spraying device inside the low-temperature embrittlement cleaning module sprays low-temperature food-grade dry ice particles onto the surface of the conveyor belt of the quick-frozen product conveying equipment, artificially increasing the temperature difference, causing the strong adhesive frozen scale to deform and rapidly crack and delaminate under the action of violent thermal expansion and contraction, greatly reducing the difficulty of peeling off the attached substances, and then the support block and scraper work together to complete the thorough cleaning of impurities on the surface of the conveyor belt.

Description

Technical Field

[0001] This invention relates to the field of food conveying technology, specifically to an anti-thawing conveying device for quick-frozen food production and its usage method. Background Technology

[0002] This anti-thawing conveyor system for frozen food production is mainly used for transferring and conveying frozen products. Most anti-thawing conveyor systems on the market currently have a protective cover on the outside of the conveyor equipment, and cold air is introduced into the cover to keep the frozen food in a low-temperature environment during transportation, effectively ensuring the overall quality of the frozen products.

[0003] In actual conveying operations, various material impurities easily adhere to the surface of the conveyor belt. Long-term accumulation of these impurities can breed bacteria, posing a food safety hazard. Existing cleaning methods mainly fall into two categories: manual cleaning and automatic scraper cleaning. Both methods are only effective at removing weakly sticky impurities. They are less effective at cleaning stubborn deposits such as highly sticky frozen meat fillings, meat paste, jelly, and saccharified jelly from glutinous rice balls and pastries. Furthermore, the cleaning process can easily cause stains to spread, expanding the contamination area. Therefore, to address these issues, a thawing-resistant conveying device for frozen food production and its usage method are proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-thawing conveying device and its usage method for the production of quick-frozen foods, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: As an optional embodiment of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, wherein: an anti-thawing conveying device and its usage method for quick-frozen food production. This includes support frames, frozen product conveying equipment, and cold air conveying equipment; A frozen food conveying device for transporting frozen foods is installed on the top of the bracket, and a cold-insulating frame that is fixedly connected to the bracket is provided on the outside of the frozen food conveying device. Below the quick-frozen product conveying equipment are a temperature difference manufacturing module, a low-temperature embrittlement cleaning module, and a pre-cooling module that are fixedly connected to the support. Below the low-temperature embrittlement cleaning module is a dry ice particle guide frame, and the other end of the dry ice particle guide frame is connected to the pre-cooling module. The low-temperature embrittlement cleaning module includes a cleaning frame fixedly connected to the bracket. A dry ice blasting device is installed inside the cleaning frame. Two sets of baffles are fixedly connected above the dry ice blasting device, and a first cover plate fixedly connected to the cleaning frame is set above the baffles. A hollow guide is passed through the interior of one of the baffles, and one end of the guide is connected to the dry ice particle guide frame. The cleaning frame is also equipped with a scraper, and a second cover plate is fixedly connected to the cleaning frame above the scraper. A support block is fixedly connected to the bottom of the second cover plate, and a conveyor belt of a quick-freezing product conveying device is provided on the outer surface of the support block.

[0006] As an optional embodiment of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, a movable frame is slidably connected inside the cleaning frame, and the movable frame is located below the support block. The lower surface of the support block is arc-shaped, and the scraper is L-shaped.

[0007] As an optional embodiment of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, the support frame is further equipped with a control cabinet, and a cold air conveying device is fixedly connected to the bottom of the support frame. The output end of the cold air conveying device is connected to the cold insulation frame, and the input end of the cold air conveying device is connected to a refrigeration device that is fixedly connected to the support frame.

[0008] As an optional embodiment of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, the inside of the cold-keeping frame is provided with a heat-insulating layer.

[0009] As an optional embodiment of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, the usage method is as follows: Step 1: Frozen food is conveyed above the frozen food conveyor and then into the cold storage box. Step 2: After the frozen food is conveyed, the belt of the frozen product conveyor rotates to the bottom. At this time, the temperature difference generation module is used to heat up the belt of the frozen product conveyor and perform pretreatment. Step 3: After the impurities on the belt surface are initially heated, they continue to move. When they pass through the low-temperature embrittlement cleaning module, the low-temperature embrittlement cleaning module sprays food-grade dry ice particles onto the belt surface of the quick-frozen product conveyor to achieve instant cooling. Then, the low-temperature embrittlement cleaning module is used to remove impurities from the impurity area. Step 4: The pre-cooling module on one side is used to pre-cool the belt of the frozen product conveyor to ensure that the frozen product conveyor can transport frozen food smoothly.

[0010] In actual conveying operations, various material impurities easily adhere to the surface of the conveyor belt of the conveying equipment. Long-term accumulation of impurities can easily breed bacteria, posing a potential food hygiene and safety hazard. Existing cleaning methods are mainly divided into manual cleaning and automatic scraper cleaning. Both methods are only effective for removing weakly sticky impurities. They are less effective for stubborn deposits such as highly sticky frozen meat paste, jelly, and saccharified jelly from glutinous rice balls and pastries. In addition, the cleaning process can easily cause stains to spread and expand the contamination area. This device is equipped with a temperature difference generation module below the frozen product conveyor equipment, which can perform controlled local heating pretreatment on the surface of the conveyor belt. When the conveyor belt runs to the low-temperature embrittlement cleaning module, the dry ice spraying equipment inside the low-temperature embrittlement cleaning module sprays low-temperature food-grade dry ice particles onto the surface of the conveyor belt, artificially increasing the temperature difference. This causes the highly sticky jelly to deform and crack rapidly under the action of intense thermal expansion and contraction, greatly reducing the difficulty of peeling off the deposits. Then, the support blocks and scrapers work together to complete the thorough cleaning of impurities on the surface of the conveyor belt.

[0011] As an optional embodiment of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, the temperature difference manufacturing module includes a temperature difference frame fixedly connected to the support, a partition plate fixedly connected inside the temperature difference frame, a hot air jetting device fixedly connected to the temperature difference frame on one side of the partition plate, and a first impurity collection frame slidably connected to the temperature difference frame on one side of the hot air jetting device.

[0012] As an optional embodiment of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, wherein: a lifting device is fixedly connected to one side of the temperature difference frame, and a motor is fixedly connected to the free end of the lifting device; a rotating shaft is fixedly connected to the end of the main shaft of the motor; a uniformly distributed cleaning brush is fixedly connected to the outside of the rotating shaft; and a second impurity collection frame that is slidably connected to the temperature difference frame is also provided below the rotating shaft.

[0013] The hot air jetting device in the temperature difference manufacturing module can spray out warm airflow, which can pre-blow off the less adhesive impurities on the conveyor belt, effectively reducing the burden of subsequent overall cleaning; when cleaning residual impurities of highly viscous quick-frozen materials, the motor stops to avoid disturbing stubborn dirt; when cleaning ordinary impurities, the motor can be started to drive the rotating shaft and cleaning brush to rotate synchronously, completing the preliminary pre-cleaning of the conveyor belt surface.

[0014] As an optional embodiment of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, the upper surface of the top plate is arc-shaped, and a baffle plate is fixedly connected to one side of the lower surface of the top plate.

[0015] As an optional solution of the anti-thawing conveying device and its usage method for quick-frozen food production described in this invention, the pre-cooling module includes a pre-cooling frame fixedly connected to the support frame, a pushing device fixedly connected inside the pre-cooling frame, and a top plate fixedly connected to the free end of the pushing device. The side of the precooling frame is connected to a dry ice particle guide frame. Two sets of guide plates are fixedly connected to the top of the precooling frame, and a micro-perforated mesh plate is fixedly connected to one side of each guide plate. A drain pipe is connected to the precooling frame below the micro-perforated mesh plate.

[0016] Food-grade dry ice particles scattered after dry ice blasting can be conveyed to the top plate surface via guide components and dry ice particle guide frames. Then, the dry ice particles are lifted and conveyed above the guide plate by a pushing device. Because the top plate is designed with an arc-shaped structure, the dry ice particles can slide evenly to the micro-perforated mesh plates on both sides. The residual cold of the dry ice itself is used to pre-cool the conveyor belt of the quick-frozen product conveying equipment, fully recover and utilize the cold energy, stabilize the low-temperature environment inside the equipment, and further improve the anti-thawing effect during the subsequent quick-frozen food conveying process.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This device is equipped with a temperature difference generation module below the frozen product conveyor equipment, which can perform controllable localized preheating on the surface of the conveyor belt. When the conveyor belt reaches the low-temperature embrittlement cleaning module, the dry ice spraying equipment inside the low-temperature embrittlement cleaning module sprays low-temperature food-grade dry ice particles onto the surface of the conveyor belt, artificially increasing the temperature difference. This causes the highly adhesive frozen deposits to deform and rapidly crack and delaminate under the action of intense thermal expansion and contraction, greatly reducing the difficulty of peeling off the deposits. Then, through the cooperation of the support block and the scraper, the thorough cleaning of impurities on the surface of the conveyor belt is completed.

[0018] The hot air jetting device in the temperature difference manufacturing module can spray out warm airflow, which can pre-blow off the less adhesive impurities on the conveyor belt, effectively reducing the burden of subsequent overall cleaning; when cleaning residual impurities of highly viscous quick-frozen materials, the motor stops to avoid disturbing stubborn dirt; when cleaning ordinary impurities, the motor can be started to drive the rotating shaft and cleaning brush to rotate synchronously, completing the preliminary pre-cleaning of the conveyor belt surface.

[0019] Food-grade dry ice particles scattered after dry ice blasting can be conveyed to the top plate surface via guide components and dry ice particle guide frames. Then, the dry ice particles are lifted and conveyed above the guide plate by a pushing device. Because the top plate is designed with an arc-shaped structure, the dry ice particles can slide evenly to the micro-perforated mesh plates on both sides. The residual cold of the dry ice itself is used to pre-cool the conveyor belt of the quick-frozen product conveying equipment, fully recover and utilize the cold energy, stabilize the low-temperature environment inside the equipment, and further improve the anti-thawing effect during the subsequent quick-frozen food conveying process. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of an anti-thawing conveying device for quick-frozen food production and its usage method; Figure 2 This is a schematic diagram of the temperature difference generation module of an anti-thawing conveying device for quick-frozen food production and its usage method; Figure 3 A schematic diagram of a low-temperature embrittlement cleaning module for an anti-thawing conveying device and its usage method in the production of quick-frozen foods. Figure 4 An exploded view of a thawing prevention conveying device for quick-frozen food production and its usage method, showing the low-temperature embrittlement cleaning module. Figure 5 This is a cross-sectional view of the precooling module of an anti-thawing conveying device for quick-frozen food production and its usage method.

[0021] In the diagram: 1-Support, 2-Quick-frozen product conveying equipment, 3-Cold air conveying equipment, 4-Refrigeration equipment, 5-Cold insulation frame, 6-Temperature difference manufacturing module, 601-Temperature difference frame, 602-Hot air jetting equipment, 603-First impurity collection frame, 604-Motor, 605-Rotating shaft, 606-Cleaning brush, 607-Second impurity collection frame, 608-Separator plate, 609-Lifting equipment, 7-Low-temperature embrittlement cleaning module, 701-Cleaning frame. 702-Dry ice blasting equipment, 703-Blocking plate, 704-Guide component, 705-First cover plate, 706-Second cover plate, 707-Support block, 708-Scraper, 709-Moving frame, 8-Pre-cooling module, 801-Pre-cooling frame, 802-Pushing device, 803-Top plate, 804-Blocking plate, 805-Guide plate, 806-Micro-perforated mesh plate, 807-Drainage pipe, 9-Dry ice particle guide frame, 10-Control cabinet. Detailed Implementation

[0022] Example 1: Please refer to Figure 1 , Figure 3 and Figure 4 The present invention provides a technical solution: A defrosting conveying device for quick-frozen food production and its usage method include a support frame 1, a quick-frozen product conveying device 2, and a cold air conveying device 3; A quick-frozen product conveying device 2 for transporting quick-frozen food is installed above the bracket 1, and a cold-keeping frame 5 is fixedly connected to the bracket 1 on the outside of the quick-frozen product conveying device 2. Below the quick-frozen product conveying equipment 2 are a temperature difference manufacturing module 6, a low-temperature embrittlement cleaning module 7 and a pre-cooling module 8 that are fixedly connected to the support 1. The low-temperature embrittlement cleaning module 7 is connected to a dry ice particle guide frame 9, and the other end of the dry ice particle guide frame 9 is connected to the pre-cooling module 8. The low-temperature embrittlement cleaning module 7 includes a cleaning frame 701 fixedly connected to the bracket 1. A dry ice blasting device 702 is installed inside the cleaning frame 701. Two sets of baffles 703 are fixedly connected above the dry ice blasting device 702. A first cover plate 705 fixedly connected to the cleaning frame 701 is provided above the baffles 703. A hollow guide 704 passes through the interior of one of the baffles 703. One end of the guide 704 is connected to the dry ice particle guide frame 9. The cleaning frame 701 is also equipped with a scraper 708, and a second cover plate 706 is fixedly connected to the cleaning frame 701 above the scraper 708. A support block 707 is fixedly connected to the bottom of the second cover plate 706, and a conveyor belt of the quick-freezing product conveying device 2 is provided on the outer surface of the support block 707.

[0023] The cleaning frame 701 is also slidably connected to a movable frame 709, which is located below the support block 707. The lower surface of the support block 707 is arc-shaped, and the scraper 708 is L-shaped.

[0024] The bracket 1 also houses a control cabinet 10. The bottom of the bracket 1 is also fixedly connected to a cold air delivery device 3. The output end of the cold air delivery device 3 is connected to the cold insulation frame 5, and the input end of the cold air delivery device 3 is connected to a refrigeration device 4 that is fixedly connected to the bracket 1.

[0025] The inside of the cold insulation frame 5 is equipped with an insulation layer.

[0026] The usage method is as follows: Step 1: Frozen food is conveyed above the frozen food conveyor 2 and then conveyed into the cold storage frame 5. Step 2: After the frozen food is conveyed, the belt of the frozen product conveyor 2 rotates to the bottom. At this time, the temperature difference generation module 6 is used to heat up the belt of the frozen product conveyor 2 and perform pretreatment. Step 3: After the impurities on the belt surface are initially heated, they continue to move. When they pass through the low-temperature embrittlement cleaning module 7, the low-temperature embrittlement cleaning module 7 sprays food-grade dry ice particles onto the belt surface of the quick-frozen product conveying equipment 2 to achieve instant cooling. Then, the low-temperature embrittlement cleaning module 7 is used to remove impurities from the impurity area. Step 4: The pre-cooling module 8 on one side is used to pre-cool the belt of the quick-frozen product conveyor 2 to ensure that the quick-frozen product conveyor 2 can transport quick-frozen food smoothly.

[0027] In actual conveying operations, various material impurities easily adhere to the surface of the conveyor belt of the conveying equipment. Long-term accumulation of impurities can easily breed bacteria, posing a potential food hygiene and safety hazard. Existing cleaning methods are mainly divided into manual cleaning and automatic scraper cleaning. Both methods are only effective for cleaning weakly sticky impurities. They are less effective for stubborn deposits such as highly sticky frozen meat paste, jelly, and saccharified jelly from glutinous rice balls and pastries. In addition, the cleaning process can easily cause stains to spread and expand the contamination area. This device is equipped with a temperature difference generation module 6 below the frozen product conveyor 2, which can perform controllable local heating pretreatment on the surface of the conveyor belt of the frozen product conveyor 2. When the conveyor belt runs to the position of the low temperature embrittlement cleaning module 7, the dry ice spraying device 702 inside the low temperature embrittlement cleaning module 7 sprays low temperature food-grade dry ice particles onto the surface of the conveyor belt of the frozen product conveyor 2, artificially increasing the temperature difference. This causes the highly sticky jelly to deform and crack and delaminate rapidly under the action of intense thermal expansion and contraction, greatly reducing the difficulty of peeling off the deposits. Then, the support block 707 and the scraper 708 work together to complete the thorough cleaning of impurities on the surface of the conveyor belt. Also includes the following: The cold storage frame 5 is fixedly installed above the bracket 1. During the frozen food conveying operation, the cold air conveying equipment 3 conveys the cold air prepared by the refrigeration equipment 4 to the inside of the cold storage frame 5, thereby realizing the cold storage and conveying of frozen food throughout the process.

[0028] When cleaning the conveyor belt of conveyor equipment 2, the conveyor belt of conveyor equipment 2 passes through the first cover plate 705 and the second cover plate 706; when the conveyor belt passes the position of the first cover plate 705, the dry ice spraying device 702 sprays food-grade dry ice particles onto the surface of the conveyor belt to achieve rapid cooling, so that the highly viscous adhering substances are quickly frozen and brittle. Some of the scattered dry ice particles fall into the guide member 704, and the airflow generated by the spray can help push the dry ice particles through the guide frame 9 into the pre-cooling module 8.

[0029] After being subjected to low-temperature embrittlement treatment, the impurities are carried by the conveyor belt to the support block 707 below the second cover plate 706. The lower surface of the support block 707 is designed with an arc shape, which allows the conveyor belt to deform appropriately, facilitating the initial separation of frozen impurities from the belt body. Together with the inclined scraper 708 with its end facing the support block 707 and the cleaning comb, they work together to complete the efficient removal and cleaning of stubborn impurities.

[0030] Example 2: This example is an improvement on Example 1. Please refer to Example 1. Figure 2Specifically, the temperature difference manufacturing module 6 includes a temperature difference frame 601 fixedly connected to the support 1. A partition plate 608 is fixedly connected inside the temperature difference frame 601. A hot air jetting device 602 fixedly connected to the temperature difference frame 601 is provided on one side of the partition plate 608. A first impurity collection frame 603 slidably connected to the temperature difference frame 601 is provided on one side of the hot air jetting device 602.

[0031] A lifting device 609 is fixedly connected to one side of the temperature difference frame 601, and a motor 604 is fixedly connected to the free end of the lifting device 609. A rotating shaft 605 is fixedly connected to the end of the main shaft of the motor 604. Cleaning brushes 606 are evenly distributed and fixedly connected to the outside of the rotating shaft 605. A second impurity collection frame 607 that is slidably connected to the temperature difference frame 601 is also provided below the rotating shaft 605.

[0032] The hot air jetting device 602 in the temperature difference manufacturing module 6 can spray out warm airflow, which can pre-blow off the weakly adhesive impurities on the conveyor belt, effectively reducing the burden of subsequent overall cleaning; when cleaning residual impurities of highly viscous quick-frozen materials, the motor 604 stops starting to avoid disturbing stubborn dirt; when cleaning ordinary impurities, the motor 604 can be started to drive the rotating shaft 605 and the cleaning brush 606 to rotate synchronously to complete the preliminary pre-cleaning of the conveyor belt surface; Also includes the following: The nozzles of the hot air jetting device 602 are angled, allowing it to spray airflow in the opposite direction of the conveyor belt's rotation. This achieves a large-scale heating of the conveyor belt surface, causing most impurities to loosen and fall into the first impurity collection frame 603. When encountering strongly adhesive substances, the lifting device 609 drives the motor 604 to move the entire device downwards, detaching the cleaning brush 606 from the conveyor belt surface and preventing the brush from scraping against the surface and causing the stains to spread and expand the contamination area. The accompanying second impurity collection frame 607 is specifically designed to collect various debris swept off by the cleaning brush 606, completing the classification and collection of impurities.

[0033] Example 3: This example is an improvement on Example 2. Please refer to [link / reference]. Figure 5 Specifically, the precooling module 8 includes a precooling frame 801 fixedly connected to the bracket 1, a pushing device 802 fixedly connected inside the precooling frame 801, and a top plate 803 fixedly connected to the free end of the pushing device 802. The side of the precooling frame 801 is connected to a dry ice particle guide frame 9. Two sets of guide plates 805 are fixedly connected to the top of the precooling frame 801, and micro-perforated mesh plates 806 are fixedly connected to one side of each guide plate 805. A drain pipe 807 is connected to the precooling frame 801 below the micro-perforated mesh plate 806.

[0034] The upper surface of the top plate 803 is arc-shaped, and a baffle plate 804 is fixedly connected to one side of the lower surface of the top plate 803.

[0035] Food-grade dry ice particles scattered after dry ice blasting can be conveyed to the surface of the top plate 803 via the guide component 704 and the dry ice particle guide frame 9. Then, the dry ice particles are lifted and conveyed to the top of the guide plate 805 by the pushing device 802. Since the top surface of the top plate 803 is set with an arc structure, the dry ice particles can slide evenly to the positions of the micro-perforated mesh plates 806 on both sides. The residual cold of the dry ice itself is used to pre-cool the conveyor belt of the quick-frozen product conveying equipment 2, fully recover and utilize the cold energy, stabilize the low temperature environment inside the equipment, and further improve the anti-thawing effect in the subsequent quick-frozen food conveying process. Also includes the following: When the top plate 803 moves upward, it will cause the baffle plate 804 on one side to move upward. At this time, the baffle plate 804 blocks the connection between the precooling frame 801 and the dry ice particle guide frame 9, preventing the dry ice particles from falling below the top plate 803. The drain pipe 807 helps to drain the dry ice particles after they melt.

[0036] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A thawing-resistant conveying device for quick-frozen food production, characterized in that: Includes a support frame (1), a quick-frozen product conveying equipment (2), and a cold air conveying equipment (3); A quick-frozen product conveying device (2) for transporting quick-frozen food is installed above the bracket (1), and a cold-keeping frame (5) is fixedly connected to the bracket (1) on the outside of the quick-frozen product conveying device (2). Below the quick-frozen product conveying equipment (2) are a temperature difference manufacturing module (6), a low-temperature embrittlement cleaning module (7) and a pre-cooling module (8) that are fixedly connected to the support (1). The low-temperature embrittlement cleaning module (7) is connected to a dry ice particle guide frame (9), and the other end of the dry ice particle guide frame (9) is connected to the pre-cooling module (8). The temperature difference manufacturing module (6) includes a temperature difference frame (601) fixedly connected to the support (1), a partition plate (608) fixedly connected inside the temperature difference frame (601), a hot air jetting device (602) fixedly connected to the temperature difference frame (601) on one side of the partition plate (608), and a first impurity collection frame (603) slidably connected to the temperature difference frame (601) on one side of the hot air jetting device (602). The low-temperature embrittlement cleaning module (7) includes a cleaning frame (701) fixedly connected to the bracket (1). A dry ice spraying device (702) is installed inside the cleaning frame (701). Two sets of baffles (703) are fixedly connected above the dry ice spraying device (702). A first cover plate (705) fixedly connected to the cleaning frame (701) is provided above the baffles (703). A hollow guide (704) runs through the interior of one of the baffles (703). One end of the guide (704) is connected to the dry ice particle guide frame (9). The cleaning frame (701) is also equipped with a scraper (708), and a second cover plate (706) is fixedly connected to the cleaning frame (701) above the scraper (708). A support block (707) is fixedly connected to the bottom of the second cover plate (706), and a conveyor belt of the quick-freezing product conveying equipment (2) is provided on the outer surface of the support block (707). The precooling module (8) includes a precooling frame (801) fixedly connected to the bracket (1), a pushing device (802) fixedly connected inside the precooling frame (801), and a top plate (803) fixedly connected to the free end of the pushing device (802). The side of the precooling frame (801) is connected to a dry ice particle guide frame (9). Two sets of guide plates (805) are fixedly connected to the top of the precooling frame (801), and microporous mesh plates (806) are fixedly connected to one side of each guide plate (805). A drain pipe (807) is connected to the precooling frame (801) below the microporous mesh plate (806).

2. The anti-thawing conveying device for quick-frozen food production according to claim 1, characterized in that: A lifting device (609) is fixedly connected to one side of the temperature difference frame (601), and a motor (604) is fixedly connected to the free end of the lifting device (609). A rotating shaft (605) is fixedly connected to the end of the main shaft of the motor (604). A uniformly distributed cleaning brush (606) is fixedly connected to the outside of the rotating shaft (605). A second impurity collection frame (607) that is slidably connected to the temperature difference frame (601) is also provided below the rotating shaft (605).

3. The anti-thawing conveying device for quick-frozen food production according to claim 1, characterized in that: The cleaning frame (701) is also slidably connected to a movable frame (709), and the movable frame (709) is located below the support block (707). The lower surface of the support block (707) is arc-shaped, and the scraper (708) is L-shaped.

4. The anti-thawing conveying device for quick-frozen food production according to claim 1, characterized in that: The upper surface of the top plate (803) is arc-shaped, and a baffle plate (804) is fixedly connected to one side of the lower surface of the top plate (803).

5. The anti-thawing conveying device for quick-frozen food production according to claim 1, characterized in that: The bracket (1) is also equipped with a control cabinet (10), and the bottom of the bracket (1) is also fixedly connected to a cold air conveying device (3). The output end of the cold air conveying device (3) is connected to the cold insulation frame (5), and the input end of the cold air conveying device (3) is connected to a refrigeration device (4) that is fixedly connected to the bracket (1).

6. The anti-thawing conveying device for quick-frozen food production according to claim 1, characterized in that: The inside of the cold insulation frame (5) is provided with a heat insulation layer.

7. The method of using the anti-thawing conveying device for quick-frozen food production according to claim 1, characterized in that: The usage method is as follows: Step 1: The frozen food is conveyed above the frozen product conveying equipment (2) and then conveyed into the cold storage frame (5). Step 2: After the frozen food is transported, the belt of the frozen product conveying equipment (2) rotates to the bottom. At this time, the temperature difference generation module (6) is used to heat up the belt of the frozen product conveying equipment (2) and perform pretreatment. Step 3: After the impurities on the belt surface are initially heated, they continue to move. When they pass through the low-temperature embrittlement cleaning module (7), the low-temperature embrittlement cleaning module (7) sprays food-grade dry ice particles onto the belt surface of the quick-frozen product conveying equipment (2) to achieve instant cooling. Then the low-temperature embrittlement cleaning module (7) is used to remove impurities from the impurity area. Step 4: The pre-cooling module (8) on one side is used to pre-cool the belt of the frozen product conveyor (2) to ensure that the frozen product conveyor (2) can transport frozen food smoothly.

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