Food pre-cooling fresh-keeping equipment

Abstract

The invention relates to the technical field of food pre-cooling and fresh-keeping, in particular to food pre-cooling and fresh-keeping equipment which comprises a pre-cooling machine and box doors symmetrically and rotatably connected to the pre-cooling machine, and a control panel is mounted on one of the box doors. A box door is pulled to swing forwards to be opened at first, then a clamping plate is pulled to move forwards to be disengaged from a toothed plate according to the size and height of food, then the clamping plate is pulled to drive a placement plate to move up and down through a fixing rod, and the placement plate moves up and down to adjust the size of a food placement space; the clamping plate is stopped from being pulled to move up and down, the clamping plate is pushed to move backwards to be reset to be meshed with the toothed plate to be limited, the clamping plate limits the placing plate through the fixing rod, the food can be placed on the placing plate, the box door is closed, and the pre-cooler can be started to conduct cold storage and fresh keeping on the food. The placing plate can be adjusted to a position suitable for placing the food according to the size and height of the food, so that the suitability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of food pre-cooling and fresh-keeping, and in particular to food pre-cooling and fresh-keeping equipment. Background Art

[0002] With the rapid development of the modern food industry and consumers' increasing demands for food quality, food pre-cooling and preservation technology, as a key component of cold chain logistics, is gaining increasing attention. After being harvested, processed, or cooked, food often remains at a high temperature. If not effectively cooled promptly, it can not only deteriorate in quality and color, but can also accelerate microbial growth, impacting food safety.

[0003] Chinese patent publication number CN115251147B discloses a food pre-cooling and preservation device. Its technical solution includes a vacuum pre-cooling machine, a door, and a conveyor rack. The conveyor rack is located on top of a gridded table, and a placement table is located between the chutes within the conveyor rack. Rollers are mounted on both sides of the bottom of the conveyor rack, and both rollers are connected to a power mechanism. Mounting members are mounted on the top of the vacuum pre-cooling machine, and adjustment members are mounted inside the mounting members via a first electric push rod. A motor is mounted on the surface of each adjustment member, and a nozzle is mounted on the bottom of each adjustment member. While the aforementioned patent can pre-cool and preserve food, due to the differences in food size and height, the placement table for placing food can only slide back and forth along the chutes and cannot be adjusted up and down. This results in excess space on the placement table being unused when placing smaller foods, resulting in wasted space. Furthermore, when placing larger foods, the space between adjacent placement tables may be insufficient to accommodate these large foods, resulting in the device being unable to accommodate foods of varying sizes and heights, resulting in relatively low adaptability.

[0004] The present invention aims to solve the problems existing in the above patents. To this end, a food pre-cooling and preservation device is proposed, which can accommodate foods of different sizes and heights and improve adaptability. Summary of the Invention

[0005] In order to overcome the disadvantage that due to the differences in food size and height, the placing table for placing food can only slide back and forth along the slide groove and cannot be adjusted up and down, resulting in an inability to adapt to food of inconsistent size and height and relatively low adaptability, the present invention provides a food pre-cooling and preservation device that can place food of different sizes and heights and improves adaptability.

[0006] The present invention is achieved through the following technical solutions:

[0007] The cam is connected to the front of the cooling device and the cooling device is connected to the cooling device, and the cooling device is connected to the cooling device by the cooling means.

[0008] Further explanation, the pushing assembly includes a movable frame that is slidably connected to the inner side of the precooler. The movable frame is located on the rear side of the sliding frame and is used to drive the sliding frame to move forward. Connecting plates are fixed on both sides of the outer side of the movable frame. The connecting plates are slidably connected to the precooler. A support plate is rotatably connected to the connecting plate. The support plate is slidably connected to the lower part of the precooler. The top of the support plate contacts the bottom of the sliding frame and is used to support the sliding frame. An electric screw threadedly connected to the movable frame is installed on the precooler. A U-shaped rod is fixed on the sliding frame. A locking assembly is provided on the movable frame for locking the U-shaped rod.

[0009] To further illustrate, the pusher assembly also includes guide rollers that are rotatably connected to the bottom of the support plate at even intervals, and the guide rollers are in contact with the inner side of the pre-cooler to guide the support plate.

[0010] Further explanation, the locking assembly includes a movable rod that is slidably connected to the movable frame, and the bottom end of the movable rod is fixed with a wedge block located inside the U-shaped rod. The front side of the wedge block is an inclined surface, which is used to limit the U-shaped rod. A reset spring is connected between the wedge block and the movable frame.

[0011] Further explanation, the locking assembly also includes a trigger plate that is slidably connected to the sliding frame. The rear side of the trigger plate is U-shaped, and the rear side of the trigger plate contacts the movable rod to drive the movable rod to move upward.

[0012] Further explanation, the food pre-cooling and preservation equipment also includes a blowing assembly, which includes a rotating shaft symmetrically connected to the pre-cooler, and fan blades fixed on the rotating shaft at evenly spaced circumferential intervals, which are used to blow the cold air in the pre-cooler. A shell is installed on the pre-cooler, and a driving assembly is provided on the pre-cooler located in the shell for driving the rotating shaft to rotate.

[0013] To further explain, the drive assembly includes a dual-axis motor installed on the pre-cooler, the output shaft end of the dual-axis motor is fixedly connected to a rotating rod, the end of the rotating rod and the top of the rotating shaft are fixedly equipped with bevel gears, and the bevel gears on the same side are meshed.

[0014] To further explain, the food pre-cooling and fresh-keeping equipment also includes a guide plate symmetrically fixed to the inner side of the pre-cooling machine, and the guide plate is located in front of the fan blade and is used to guide the cold air.

[0015] The beneficial effects of the present invention are:

[0016] 1. First, pull the door forward and swing it open. Then, pull the card forward to disengage the tooth plate according to the size and height of the food. Then, pull the card to drive the placement plate up and down through the fixed rod. The placement plate moves up and down to adjust the size of the space for placing the food. When the size of the space for placing the food is adjusted, stop pulling the card up and down, push the card backward to reset and engage with the tooth plate to be limited. The card then limits the placement plate through the fixed rod, and the food can be placed on the placement plate. Close the door and start the pre-cooler to refrigerate and keep the food fresh. In this way, the placement plate can be adjusted to a suitable position for food placement according to the size and height of the food, thereby improving adaptability.

[0017] 2. When a large amount of food needs to be refrigerated, the pusher assembly pushes the sliding rack out of the pre-cooler, allowing the food to be directly stacked in the pre-cooler for refrigeration. The removal of the sliding rack creates more storage space, allowing food to be stacked or placed on the rack for refrigeration as needed.

[0018] 3. Under the action of the fan blades, whenever the pre-cooler is started to refrigerate and preserve food, the rotation of the fan blades can blow the cold air in the pre-cooler. The blown cold air will contact the food faster for refrigeration and preservation, thus achieving a better effect of refrigerating and preserving the food. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the tooth plate, fixing rod and clamping plate of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the sliding frame and the placement plate of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting spring of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the pusher assembly of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the movable frame and the support plate of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the U-shaped rod, wedge block and return spring of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the guide roller of the present invention.

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the blowing assembly of the present invention.

[0028] Figure 10 It is a schematic diagram of the three-dimensional structure of the guide plate of the present invention.

[0029] In the accompanying drawings: 1-precooler, 2-box door, 3-control panel, 4-sliding frame, 5-placing plate, 6-tooth plate, 7-fixing rod, 8-clamping plate, 9-connecting spring, 10-movable frame, 101-electric screw, 102-connecting plate, 103-support plate, 1031-guide roller, 104-U-shaped rod, 105-movable rod, 1051-wedge block, 1052-reset spring, 106-trigger plate, 11-rotating shaft, 111-fan blades, 112-housing, 113-dual-axis motor, 114-rotating rod, 115-bevel gear, 12-guide plate. DETAILED DESCRIPTION

[0030] First of all, it should be noted that in the various described embodiments, identical components are provided with identical reference numerals or identical component names, wherein the disclosure contained throughout the entire description can be transferred to the same components having the same reference numerals or identical component names. Positional designations selected in the description, such as top, bottom, lateral, etc., also refer to the directly described and illustrated figures and are transferred to the new position in the event of a change in position.

[0031] Example: A food pre-cooling and fresh-keeping device, please refer to Figures 1-8As shown, it includes a precooler 1 and a box door 2 that is symmetrically connected to the front side of the precooler 1, a control panel 3 is installed on the upper part of the front side of the right box door 2, and also includes a sliding frame 4, a placement plate 5, a tooth plate 6, a fixing rod 7, a card plate 8, a connecting spring 9 and a pushing assembly. The bottom of the precooler 1 is slidably connected to the sliding frame 4, and the left and right sides of the sliding frame 4 are slidably connected to multiple placement plates 5. The placement plates 5 can be used to place food. The sides of the placement plates 5 on the left and right sides that are away from each other are respectively in contact with the inner wall of the precooler 1. The front side of the placement plate 5 is symmetrically fixed with fixing rods 7, and a card plate 8 is slidably set between the two fixing rods 7 on each placement plate 5. The rear side of the card plate 8 is connected to the front side of the placement plate 5. The connecting spring 9 is symmetrically connected to the left and right sides, and the connecting spring 9 is sleeved on the fixed rod 7. The middle part of the front side of the sliding frame 4 and the left and right sides of the front side of the precooler 1 are fixed with a tooth plate 6. The tooth plate 6 is engaged with the card plate 8, and the tooth plate 6 can limit the card plate 8. The card plate 8 moves and disengages from the tooth plate 6. The card plate 8 stops being limited by the tooth plate 6, and the card plate 8 is pulled up and down to drive the fixed rod 7 to move up and down. The fixed rod 7 drives the placement plate 5 to move up and down, so that the placement plate 5 moves to adjust the size of the space for placing food. A pushing assembly is provided between the precooler 1 and the sliding frame 4. When the pushing assembly is operating, the pushing assembly can drive the sliding frame 4 to move forward, so that the sliding frame 4 moves outside the precooler 1.

[0032] See also Figure 5-Figure 8As shown, the pushing assembly includes a movable frame 10, an electric screw 101, a connecting plate 102, a support plate 103, a guide roller 1031, a U-shaped rod 104 and a locking assembly. The bottom of the precooler 1 is slidably connected to the movable frame 10. The movable frame 10 is located at the rear side of the sliding frame 4. When the movable frame 10 moves forward, the movable frame 10 can drive the sliding frame 4 to move forward, so that the sliding frame 4 moves to the outside of the precooler 1. The lower parts of the left and right sides of the movable frame 10 are fixed with connecting plates 102. The connecting plates 102 are slidably connected to the precooler 1, and the left and right sides are fixed with connecting plates 102. The front sides of the connecting plates 102 on both sides are rotatably connected to support plates 103, and the support plates 103 are slidably connected to the lower part of the precooler 1. The top of the support plate 103 contacts the bottom of the sliding frame 4. When the sliding frame 4 moves forward, the support plate 103 can support the sliding frame 4. The bottom of the support plate 103 is evenly spaced and rotatably connected to guide rollers 1031. The guide rollers 1031 contact the inner side of the precooler 1. When the support plate 103 moves, the guide rollers 1031 can guide the support plate 103 to reduce the friction between the support plate 103 and the precooler 1. The friction between them, an electric screw 101 is installed in the middle of the lower part of the precooler 1, and the electric screw 101 is threadedly connected to the lower part of the movable frame 10. A U-shaped rod 104 is fixed to the lower part of the rear side of the sliding frame 4. A locking component is provided on the movable frame 10, and the locking component can lock the U-shaped rod 104 so that the sliding frame 4 is locked; the locking component includes a movable rod 105, a wedge block 1051, a return spring 1052 and a trigger plate 106. The movable rod 105 is slidably connected to the middle of the top of the movable frame 10, and the bottom end of the movable rod 105 is fixed There is a wedge block 1051, the front side of the wedge block 1051 is an inclined surface, the wedge block 1051 is located in the U-shaped rod 104, the wedge block 1051 can limit the U-shaped rod 104, a return spring 1052 is connected between the top of the wedge block 1051 and the top of the movable frame 10, and a trigger plate 106 is slidably connected to the lower part of the sliding frame 4. The rear side of the trigger plate 106 is U-shaped, and the rear side of the trigger plate 106 contacts the upper part of the movable rod 105. When the trigger plate 106 moves upward, the trigger plate 106 can drive the movable rod 105 to move upward.

[0033] First, pull the box door 2 forward and swing it open. Then, according to the size of the food that needs to be kept fresh, pull the card plate 8 forward, the connecting spring 9 is stretched, the card plate 8 moves forward and disengages from the tooth plate 6, and then you can pull the card plate 8 up and down to drive the fixing rod 7 to move up and down, the fixing rod 7 drives the placement plate 5 to move up and down, and the placement plate 5 moves up and down to adjust the size of the space for placing food. When the placement plate 5 moves up and down to a position suitable for placing food, stop pulling the card plate 8 up and down, push the card plate 8 to move backward and reset to engage with the tooth plate 6. The card plate 8 is reset to reset the connecting spring 9, and then put the food on the adjusted placement plate 5. According to the above operation, pull the card plate 8 to disengage from the tooth plate 6, and you can pull The placing plate 5 is moved up and down so that the placing plate 5 can be adjusted to the position for placing food. This process is repeated and the placing plate 5 can be adjusted to a suitable position for placing food according to the size and height of the food, thereby improving adaptability. When the food is placed, the box door 2 is pulled back to swing back and closed, and the control panel 3 is pressed to control the pre-cooling machine 1 to start through the control module. The pre-cooling machine 1 emits cold air, and the cold air comes into contact with the food, and the cold air refrigerates and preserves the food. When the food needs to be taken out, the box door 2 is pulled forward to swing open, and then the food on the placing plate 5 is removed, and the box door 2 is pulled back to swing closed. When all the food is removed from the placing plate 5, the control panel 3 is pressed to control the pre-cooling machine 1 to close through the control module.When a large amount of food needs to be placed, there is no need to use the sliding rack 4. The box door 2 can be pulled forward to swing open, and the control panel 3 is pressed to control the electric screw 101 to rotate forward through the control module. The electric screw 101 rotates forward to drive the movable frame 10 to move forward, and the movable frame 10 moves forward to drive the sliding rack 4 to move forward. At the same time, the movable frame 10 moves forward and also drives the connecting plate 102 to move forward. The connecting plate 102 moves forward and drives the support plate 103 to move forward. The support plate 103 moves forward synchronously with the sliding rack 4. The support plate 103 supports the movement of the sliding rack 4, and the support plate 103 drives the guide roller 10 31 moves forward, and the guide roller 1031 guides the movement of the support plate 103, so that the support plate 103 moves more smoothly in the precooler 1. When the movable frame 10 moves forward to the maximum stroke, the electric screw 101 is turned off, and the movable frame 10 stops driving the sliding frame 4 to move forward, and the movable frame 10 also drives the support plate 103 to move forward through the connecting plate 102. At this time, the support plate 103 is out of contact with the precooler 1. Due to the action of gravity, the support plate 103 swings downward and contacts the ground in an inclined state. The support plate 103 drives the sliding frame 4 to swing downward in an inclined state, and then pulls the trigger plate 106 upward The movement drives the movable rod 105 to move upward, and the movable rod 105 moves upward to drive the wedge block 1051 to move upward, the return spring 1052 is compressed, the wedge block 1051 moves upward and disengages from the U-shaped rod 104, and then the support plate 103 on the sliding frame 4 is removed, and the sliding frame 4 is removed to drive the trigger plate 106 and the U-shaped rod 104 to move, and the trigger plate 106 moves and disengages from the movable rod 105. Due to the action of the return spring 1052, the wedge block 1051 moves downward to reset and drives the movable rod 105 to move downward to reset, and then press the control panel 3 to control the electric screw 101 through the control module. Reverse, the electric screw 101 reverses and drives the movable frame 10 to move backward and reset. The movable frame 10 moves backward and reset through the movable rod 105, which drives the wedge block 1051 to move backward and reset. At the same time, the movable frame 10 also drives the support plate 103 to move backward and reset through the connecting plate 102. The support plate 103 moves backward and contacts the pre-cooling machine 1. The pre-cooling machine 1 drives the support plate 103 to swing upward and reset. Then the operator can directly stack a large amount of food in the pre-cooling machine 1. Since the sliding rack 4 is removed, the storage space is larger. After closing the door 2, the food can continue to be refrigerated and kept fresh by the pre-cooling machine 1. In this way, the food can be stacked and refrigerated or placed on the storage rack according to needs.When the sliding rack 4 needs to be used, the sliding rack 4 is put back into the precooling machine 1, pushing the sliding rack 4 to move backward and reset. The sliding rack 4 drives the trigger plate 106 and the U-shaped rod 104 to move backward and reset. The U-shaped rod 104 moves backward and contacts the inclined surface of the wedge block 1051. The U-shaped rod 104 drives the wedge block 1051 to move upward, and the reset spring 1052 is compressed. The wedge block 1051 moves upward and drives the movable rod 105 to move upward. Then the trigger plate 106 moves backward and resets and contacts the movable rod 105. The U-shaped rod 104 continues to move backward and disengages from the inclined surface of the wedge block 1051. Due to the action of the reset spring 1052, the wedge block 1051 moves downward and resets, driving the movable rod 105 to move downward and reset. The wedge block 1051 resets to limit the U-shaped rod 104, thereby completing the limit of the sliding rack 4, and the placement plate 5 can continue to be used.

[0034] See also Figure 9 As shown, the food pre-cooling and fresh-keeping device also includes a blowing assembly installed on the pre-cooling machine 1, and the blowing assembly includes a rotating shaft 11, a fan blade 111, a shell 112 and a driving assembly. The rear side of the pre-cooling machine 1 is symmetrically connected to the rotating shaft 11, and the fan blades 111 are fixed on the rotating shafts 11 on both sides at uniform intervals along the circumferential direction. When the fan blades 111 rotate, the fan blades 111 can blow the cold air in the pre-cooling machine 1. The shell 112 is installed on the rear side of the top outside the pre-cooling machine 1, and the driving assembly is provided on the outer side of the pre-cooling machine 1. The driving assembly is located in the shell 112. When the driving assembly is in operation, the driving assembly can drive the rotating shaft 11 to rotate; the driving assembly includes a dual-axis motor 113, a rotating rod 114 and a bevel gear 115. The dual-axis motor 113 is installed on the rear side of the top outside the precooler 1. The output shaft ends on the left and right sides of the dual-axis motor 113 are fixedly connected to the rotating rod 114. The ends of the rotating rods 114 on the left and right sides that are away from each other are fixedly covered with bevel gears 115 on the top of the left and right rotating shafts 11, and the two bevel gears 115 on the same side are meshed.

[0035] When the precooler 1 is started to refrigerate and preserve food, the control panel 3 is pressed to control the dual-axis motor 113 through the control module to start. The dual-axis motor 113 starts to rotate the rotating rod 114, which in turn drives the upper bevel gear 115 to rotate. The upper bevel gear 115 rotates and drives the lower bevel gear 115 to rotate. The lower bevel gear 115 rotates and drives the rotating shaft 11 to rotate. The rotating shaft 11 drives the fan blades 111 to rotate. The rotating fan blades 111 blow the cold air in the precooler 1, so that the cold air circulates faster in the precooler 1. The circulating cold air can better refrigerate and preserve the food. When all the food is taken out, the control panel 3 is pressed to control the dual-axis motor 113 to stop through the control module. The dual-axis motor 113 stops driving the rotating rod 114 to rotate. The rotating rod 114 stops driving the rotating shaft 11 through the bevel gear 115, and the rotating shaft 11 stops driving the fan blades 111. In this way, the food can be refrigerated and preserved more effectively.

[0036] See also Figure 10 As shown, the food pre-cooling and preservation equipment also includes a guide plate 12. The guide plate 12 is symmetrically fixed to the left and right rear part of the inner side of the pre-cooling machine 1. The guide plate 12 is located in front of the fan blade 111. When the fan blade 111 rotates, the guide plate 12 can guide the cold air.

[0037] When the fan blades 111 rotate to blow the cold air in the precooler 1, the guide plate 12 can separate the sliding frame 4 and the fan blades 111, and the guide plate 12 can guide the cold air in the precooler 1. In this way, the cold air can flow more smoothly in the precooler 1 to refrigerate and preserve the food, thereby further improving the effect of refrigerating and preserving the food.

[0038] Finally, it is necessary to point out that the above content is only used to help understand the technical solution of the present invention and cannot be understood as limiting the scope of protection of the present invention; non-essential improvements and adjustments made by technical personnel in this field based on the above content of the present invention are all within the scope of protection required by the present invention.

Claims

1. A food pre-cooling and fresh-keeping device, comprising a pre-cooling machine (1) and doors (2) symmetrically connected to the pre-cooling machine (1), wherein a control panel (3) is installed on one of the doors (2), and is characterized in that: The invention also includes a sliding frame (4) slidably connected to the inner side of the precooler (1), and a placement plate (5) is slidably connected to both sides of the sliding frame (4) for placing food. The placement plate (5) contacts the inner wall of the precooler (1), and a fixed rod (7) is symmetrically fixed on the placement plate (5). A card plate (8) is slidably mounted between the fixed rods (7) on each placement plate (5), and a connecting spring (9) mounted on the fixed rod (7) is symmetrically connected between the card plate (8) and the placement plate (5). The sliding frame (4) is connected to the front side of the precooler (1). Tooth plates (6) meshing with the card plate (8) are fixed on both sides and are used to limit the card plate (8). The card plate (8) moves to disengage from the tooth plate (6), and the card plate (8) stops being limited by the tooth plate (6). The card plate (8) is pulled up and down to drive the fixed rod (7) to move up and down, and the fixed rod (7) drives the placement plate (5) to move up and down, so that the placement plate (5) moves to adjust the size of the space for placing food. A pushing assembly is provided between the pre-cooling machine (1) and the sliding frame (4) to drive the sliding frame (4) to move forward.

2. A food pre-cooling and fresh-keeping device according to claim 1, characterized in that: The pusher assembly includes a movable frame (10) slidably connected to the inner side of the precooler (1), the movable frame (10) is located at the rear side of the sliding frame (4) and is used to drive the sliding frame (4) to move forward, and connecting plates (102) are fixedly connected to the outer sides of the movable frame (10), the connecting plates (102) are slidably connected to the precooler (1), and a support plate (103) is rotatably connected to the connecting plate (102), and the support plate (103) is slidably connected to the lower part of the precooler (1), and the top of the support plate (103) contacts the bottom of the sliding frame (4) and is used to support the sliding frame (4), and an electric screw (101) threadedly connected to the movable frame (10) is installed on the precooler (1), a U-shaped rod (104) is fixedly connected to the sliding frame (4), and a locking assembly is provided on the movable frame (10) for locking the U-shaped rod (104).

3. A food pre-cooling and fresh-keeping device as claimed in claim 2, characterized in that: The pushing assembly further comprises guide rollers (1031) rotatably connected to the bottom of the support plate (103) at even intervals, the guide rollers (1031) being in contact with the inner side of the pre-cooler (1) and being used to guide the support plate (103).

4. A food pre-cooling and fresh-keeping device as claimed in claim 3, characterized in that: The locking assembly comprises a movable rod (105) slidably connected to the movable frame (10); a wedge block (1051) located in the U-shaped rod (104) is fixedly connected to the bottom end of the movable rod (105); the front side of the wedge block (1051) is an inclined surface for limiting the U-shaped rod (104); and a return spring (1052) is connected between the wedge block (1051) and the movable frame (10).

5. A food pre-cooling and fresh-keeping device as claimed in claim 4, characterized in that: The locking assembly further comprises a trigger plate (106) slidably connected to the sliding frame (4); the rear side of the trigger plate (106) is U-shaped and contacts the movable rod (105) to drive the movable rod (105) to move upward.

6. A food pre-cooling and fresh-keeping device as claimed in claim 5, characterized in that: The food pre-cooling and fresh-keeping device further comprises a blowing assembly, the blowing assembly comprising a rotating shaft (11) symmetrically connected to the pre-cooling machine (1), fan blades (111) fixedly connected to the rotating shaft (11) at even intervals along the circumference, for blowing cold air in the pre-cooling machine (1), a shell (112) mounted on the pre-cooling machine (1), and a driving assembly located in the shell (112) provided on the pre-cooling machine (1) for driving the rotating shaft (11) to rotate.

7. A food pre-cooling and fresh-keeping device as claimed in claim 6, characterized in that: The driving assembly includes a double-shaft motor (113) installed on the precooler (1). The output shaft end of the double-shaft motor (113) is fixedly connected to a rotating rod (114). The end of the rotating rod (114) and the top of the rotating shaft (11) are both fixedly sleeved with bevel gears (115), and the bevel gears (115) on the same side are meshed.

8. A food pre-cooling and fresh-keeping device as claimed in claim 7, characterized in that: The food pre-cooling and fresh-keeping device further comprises a guide plate (12) symmetrically fixed to the inner side of the pre-cooling machine (1); the guide plate (12) is located in front of the fan blade (111) and is used for guiding cold air.

Images