Rapid freezing device for food

Abstract

The utility model discloses a quick freezing device for food, which belongs to the technical field of food freezing and comprises a freezing chamber, a freezing cavity is vertically arranged in the freezing chamber, a feed port and a discharge port are arranged on the lateral side of the freezing chamber, and driving components for driving food to move upwards are symmetrically arranged in the freezing cavity. The two symmetrically-arranged driving assemblies are started synchronously, a plurality of spray head sets used for spraying liquid nitrogen are arranged in the freezing cavity and are arranged in the vertical direction, a storage box used for storing the liquid nitrogen is arranged at the top of the freezing chamber, the bottom of the storage box is connected with a discharging pipe, the discharging pipe communicates with each spray head set, and the spraying head sets are arranged in the storage box. The utilization rate of liquid nitrogen can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food freezing, and more specifically to a quick freezing device for food. Background Art

[0002] Food processing refers to the grain milling, feed processing, vegetable oil and sugar processing, slaughtering and meat processing, aquatic product processing, as well as processing activities of vegetables, fruits and nuts, as well as potatoes, dehydrated vegetable processing, and canned vegetable processing that directly use agricultural, forestry, animal husbandry and fishery products as raw materials. It is a type of agricultural product processing industry in a broad sense, and some foods need to be frozen before transportation to ensure their freshness.

[0003] Most existing freezing methods use liquid nitrogen freezing. Food is transported horizontally through a conveyor belt, and liquid nitrogen is sprayed through a nozzle arranged on the top of the conveyor belt. The liquid nitrogen moves downward under the action of its own gravity to freeze the food at the bottom. However, the contact time between the liquid nitrogen sprayed by each nozzle and the food is very short, and it will pass through the food. Most of the time, the liquid nitrogen sprayed by each nozzle does not absorb enough heat and is wasted, which will cause a waste of liquid nitrogen. A solution to the above problem is proposed below. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model aims to provide a rapid freezing device for food, which can improve the utilization rate of liquid nitrogen.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A rapid freezing device for food comprises a freezing chamber, wherein a freezing cavity is vertically arranged inside the freezing chamber, a feeding port and a discharging port are provided on the side of the freezing chamber, driving components for driving food to move upward are symmetrically arranged inside the freezing chamber, two symmetrically arranged driving components are started synchronously, a plurality of nozzle groups for spraying liquid nitrogen are arranged inside the freezing chamber, and the plurality of nozzle groups are arranged in a vertical direction, a storage box for storing liquid nitrogen is arranged on the top of the freezing chamber, a discharge pipe is connected to the bottom of the storage box, and the discharge pipe is communicated with each of the nozzle groups respectively.

[0007] Preferably, the driving component includes a driving frame, a transmission group, a connecting rod, a baffle and a motor, the driving frame is installed inside the freezing chamber, the transmission group is provided with two and symmetrically arranged inside the driving frame, the transmission group includes a driving wheel and a driving belt, there are a plurality of driving wheels, the plurality of driving wheels are evenly arranged in the vertical direction and rotatably cooperate with the driving frame, the driving belt is sleeved on the outside of the driving wheel, there are a plurality of baffles, the plurality of baffles are evenly fixed on the two driving belts, there are two connecting rods, the two connecting rods are respectively located between the driving wheels at the two ends of the two transmission groups, and the two ends of the connecting rods are respectively fixedly connected to the two driving wheels, the motor is installed outside the freezing chamber, the output end of the motor passes through the side of the freezing chamber and the side of the driving frame and rotates respectively, and the output end of the motor is fixedly connected to the driving wheel of one of the transmission groups located at any one end.

[0008] Preferably, the nozzle group includes a connecting pipe and a spray head, the connecting pipe is horizontally arranged inside the freezing chamber, the connecting pipe is annular, the discharge pipe and the connecting pipe are connected to each other, the spray head is evenly arranged on the inner side of the connecting pipe, and the spray head is facing the freezing chamber.

[0009] Preferably, an ejection member for pushing frozen food inside the freezing chamber out of the freezing chamber is installed outside the freezing chamber, and the ejection member includes a pushing cylinder and a pushing plate. The pushing cylinder is arranged on the side of the freezing chamber, and the output end of the pushing cylinder passes through the side of the freezing chamber and slides together. The output end of the pushing cylinder corresponds to the discharge port, and the pushing plate and the pushing cylinder are fixedly connected.

[0010] Preferably, the number of the spray heads on the plurality of spray head groups increases with increasing height inside the freezing chamber.

[0011] Preferably, a support plate is provided inside the freezing chamber, and the upper surface of the support plate is at the same height as the lower edge of the feed port.

[0012] Preferably, a controller is provided outside the freezing chamber, and the cylinder and the driving component are electrically connected to the controller.

[0013] Preferably, a valve for controlling the opening and closing of the discharge pipe is installed on the discharge pipe.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. When the present solution is in use, through the vertically arranged freezing chamber, when the food enters the freezing chamber through the feed port, the food is driven to move upward by the driving component, and the food can be quickly frozen by the multiple groups of vertically arranged nozzles. At the same time, because the gravity of liquid nitrogen is greater than that of air, the liquid nitrogen near the discharge port will move downward for secondary freezing after cooling, thereby achieving a sufficient cooling effect, reducing the waste of liquid nitrogen and improving the utilization rate.

[0016] Second, the pusher can automatically push the frozen food out of the freezing chamber, thus avoiding the trouble of manual labor in taking it out directly, reducing the risk of manual frostbite and improving safety.

[0017] 3. The number of spray heads on the spray head group increases with the height, which can ensure the cooling rate of liquid nitrogen and reduce waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the utility model;

[0020] Figure 3 This is a front view structural schematic diagram of the utility model;

[0021] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0022] Figure 5 It is a schematic diagram of the enlarged structure of A of the utility model;

[0023] Figure 6 It is a schematic diagram of the enlarged structure of B of the utility model.

[0024] Description of the numbers in the figure:

[0025] 1. Freezer; 2. Freezer cavity; 3. Feed inlet; 4. Discharge outlet; 5. Driving component; 6. Nozzle group; 7. Storage box; 8. Discharge pipe; 9. Driving frame; 10. Transmission group; 11. Connecting rod; 12. Baffle; 13. Motor; 14. Driving belt; 15. Driving wheel; 16. Connecting pipe; 17. Spray head; 18. Ejector; 19. Pushing cylinder; 20. Pushing plate; 21. Support plate; 22. Controller; 23. Valve. DETAILED DESCRIPTION

[0026] Embodiment 1:

[0027] See also Figure 1-6A rapid freezing device for food comprises a freezing chamber 1, a freezing cavity 2 is vertically arranged inside the freezing chamber 1, a feed port 3 and a discharge port 4 are opened on the side of the freezing chamber 1, the feed port 3 is located at the bottom of the side of the freezing chamber 1, the discharge port 4 is located at the top of the side of the freezing chamber 1, and the feed port 3 and the discharge port 4 are both communicated with the freezing cavity 2, and the bottoms of the feed port 3 and the discharge port 4 are fixedly connected with a placement plate that plays a supporting and placing role, the top of the placement plate is flush with the lower edge of the corresponding feed port 3 or the discharge port 4, and the placement plate can facilitate the placement of food in and out of the freezing cavity 2.

[0028] A support plate 21 is provided inside the freezing chamber 2, and the upper surface of the support plate 21 is at the same height as the lower edge of the feed port 3. The support plate 21 is used to support the food extended into the freezing chamber 2 to facilitate the subsequent transportation of the driven component 5. A push-out member 18 is installed outside the freezing chamber 1 to push the frozen food inside the freezing chamber 2 out of the freezing chamber 2. The push-out member 18 includes a pushing cylinder 19 and a pushing plate 20. The pushing cylinder 19 is arranged on the side of the freezing chamber 1. The output end of the pushing cylinder 19 passes through the side of the freezing chamber 1 and slides together. The output end of the pushing cylinder 19 corresponds to the discharge port 4, and the pushing plate 20 is fixedly connected to the pushing cylinder 19. The pushing member can automatically push the frozen food out of the freezing chamber 2, thereby avoiding the trouble of manual direct taking, reducing the risk of manual frostbite, and improving safety. The pushing plate 20 is used to increase the contact area between the pushing cylinder and the food to ensure the stable performance of the pushed food.

[0029] A controller 22 is installed on the side of the freezing chamber 1, and the controller 22 has the effect of controlling the entire action process. A driving component 5 for driving the food to move upward is symmetrically arranged inside the freezing chamber 2. The two symmetrically arranged driving components are started synchronously. The driving component 5 includes a driving frame 9, a transmission group 10, a connecting rod 11, a baffle 12 and a motor 13. The driving frame 9 is in a U-shape, and the driving frame 9 is installed inside the freezing chamber 2. The top and bottom of the driving frame 9 are respectively connected to the top and bottom of the freezing chamber 2, and the remaining four surfaces of the driving frame 9 have gaps with the freezing chamber 2. Two transmission groups 10 are provided and symmetrically arranged inside the driving frame 9. The design of multiple transmission groups 10 can ensure the stability of the transmission. A plurality of driving wheels 15 are provided, and the plurality of driving wheels 15 are arranged vertically. The two drive belts 15 are evenly arranged in the direction and rotate with the drive frame 9. The drive belt 14 is sleeved on the outside of the drive wheel 15. A number of baffles 12 are provided, and the baffles 12 are evenly fixed on the two drive belts 14. Two connecting rods 11 are provided, and the two connecting rods 11 are respectively located between the drive wheels 15 at the two ends of the two transmission groups 10, and the two ends of the connecting rod 11 are respectively fixedly connected to the two drive wheels 15. The connecting rod 11 is used for the synchronous rotation of the two transmission groups 10. The motor 13 is installed on the outside of the freezer compartment 1, and the motor 13 is electrically connected to the controller 22. The output end of the motor 13 passes through the side of the freezer compartment 1 and the side of the drive frame 9 and rotates respectively. The output end of the motor 13 is fixedly connected to the drive wheel 15 located at any end of one of the transmission groups 10.

[0030] A storage box 7 for storing liquid nitrogen is arranged on the top of the freezing chamber 1. The storage box 7 includes a box body with an opening and a sealing cover for sealing the box body. A discharge pipe 8 is connected to the bottom of the storage box 7. A valve 23 for controlling the opening and closing of the discharge pipe 8 is installed on the discharge pipe 8. The valve 23 is an electric control valve 23, and the electric control valve 23 is electrically connected to the controller 22. A plurality of nozzle groups 6 for spraying liquid nitrogen are arranged inside the freezing chamber 2, and the plurality of nozzle groups 6 are arranged in a vertical direction. The discharge pipe 8 is connected to each nozzle group 6 respectively. The nozzle group 6 includes a connecting pipe 16 and a spray head 17. The connecting pipe 16 is horizontally arranged on the freezing chamber 2. Inside the freezing chamber 2, the connecting pipe 16 is annular, the discharge pipe 8 and the connecting pipe 16 are interconnected, the spray heads 17 are evenly arranged on the inner side of the connecting pipe 16, and the spray heads are facing the freezing chamber 2. The number of spray heads 17 on the plurality of spray head groups 6 increases with the increase of the height inside the freezing chamber 2. The lower the spray head group 6 is, the shorter the contact time with the food is, that is, the lower the cooling efficiency is. By controlling the density of the spray heads 17 inside the spray head groups 6 at different heights, the lower the spray head group 6 is, the less liquid nitrogen is sprayed at the same time, and the liquid nitrogen with low cooling efficiency will be less, thereby improving the overall cooling rate of liquid nitrogen and reducing waste.

[0031] Working principle:

[0032] When in use, spread the food flat on the placement plate, the placement plate includes a frame and a metal receiving net, the metal receiving net is fixed to the bottom of the frame, the design of the metal net can ensure the passage of liquid nitrogen, facilitate the subsequent cooling of food, and ensure the freezing efficiency of liquid nitrogen. The food is placed on the upper surface of the metal receiving net, and the placement plate is placed on the placement plate near the feed port 3, and the placement plate is quickly pushed into the freezing chamber 2 through the feed port 3. When the placement plate enters the freezing chamber 2, it will fall on the support plate 21, and the support plate 21 will prevent the plate from having a receiving effect.

[0033] The controller 22 controls the motor 13 to rotate, and the motor 13 drives the corresponding driving wheel 15 to rotate. The driving wheel 15 drives another corresponding driving wheel 15 to rotate through the connecting rod 11, that is, drives the driving belt 14 to move. The driving belt 14 drives the baffle 12 fixed thereon to move, and the placement plate will be lifted up by the baffle 12, thereby driving the placement plate to move upward. At the same time, the controller 22 controls the valve 23 to open, and the liquid nitrogen in the storage box 7 will flow into the discharge pipe 8 under the action of gravity, and then flow out through the spray head 17 through the connecting pipe 16. The sprayed liquid nitrogen will freeze the food, and the liquid nitrogen will continue to move downward, and can continue to cool down to ensure the freezing efficiency.

[0034] The controller 22 can control the pushing cylinder 19 to start once at a certain interval. The starting time of the pushing cylinder 19 is the same as the time for one push plate to move to the next push plate position, thereby ensuring that the pushing cylinder 19 can move the frozen food out of the freezing chamber 2 through the discharge port 4. When the pushing cylinder 19 is started, the pushing cylinder 19 will drive the pushing plate 20 to move, and the pushing plate 20 will move the placement plate out of the freezing chamber 2 through the discharge port 4. The placement plate at the bottom of the freezing chamber 2 can support the removal of the placement plate.

Claims

1. A rapid freezing device for food, characterized in that: The invention comprises a freezing chamber (1), wherein a freezing cavity (2) is vertically arranged inside the freezing chamber (1), a feeding port (3) and a discharging port (4) are provided on the side of the freezing chamber (1), a driving component (5) for driving food to move upward is symmetrically arranged inside the freezing cavity (2), and the two symmetrically arranged driving components are started synchronously, a plurality of nozzle groups (6) for spraying liquid nitrogen are arranged inside the freezing cavity (2), and the plurality of nozzle groups (6) are arranged in a vertical direction, a storage box (7) for storing liquid nitrogen is arranged on the top of the freezing chamber (1), a discharge pipe (8) is connected to the bottom of the storage box (7), and the discharge pipe (8) is respectively connected to each nozzle group (6).

2. A food quick freezing device according to claim 1, characterized in that: The driving component (5) comprises a driving frame (9), a transmission group (10), a connecting rod (11), a baffle (12) and a motor (13); the driving frame (9) is installed inside the freezing chamber (2); two transmission groups (10) are provided and are symmetrically arranged inside the driving frame (9); the transmission group (10) includes a driving wheel (15) and a driving belt (14); a plurality of driving wheels (15) are provided, and the plurality of driving wheels (15) are evenly arranged in the vertical direction and are rotatably matched with the driving frame (9); the driving belt (14) is sleeved on the outside of the driving wheel (15); a plurality of baffles (12) are provided, and the plurality of driving wheels (15) are uniformly arranged in the vertical direction and are rotatably matched with the driving frame (9); the driving belt (14) is sleeved on the outside of the driving wheel (15); a plurality of baffles (12) are provided, and the plurality of The baffle (12) is evenly fixed on the two driving belts (14), two connecting rods (11) are provided, and the two connecting rods (11) are respectively located between the driving wheels (15) at the two ends of the two transmission groups (10), and the two ends of the connecting rod (11) are respectively fixedly connected to the two driving wheels (15), and the motor (13) is installed outside the freezing chamber (1), and the output end of the motor (13) passes through the side of the freezing chamber (1) and the side of the driving frame (9) and rotates respectively, and the output end of the motor (13) is fixedly connected to the driving wheel (15) located at any end of one of the transmission groups (10).

3. A food quick freezing device according to claim 1, characterized in that: The nozzle group (6) comprises a connecting pipe (16) and a spray head (17); the connecting pipe (16) is horizontally arranged inside the freezing chamber (2); the connecting pipe (16) is annular; the discharge pipe (8) and the connecting pipe (16) are interconnected; the spray head (17) is evenly arranged on the inner side of the connecting pipe (16), and the spray head faces the freezing chamber (2).

4. A food quick freezing device according to claim 1, characterized in that: The outside of the freezing chamber (1) is provided with an ejection member (18) for ejecting frozen food inside the freezing chamber (2) out of the freezing chamber (2). The ejection member (18) comprises a pushing cylinder (19) and a pushing plate (20). The pushing cylinder (19) is arranged on the side of the freezing chamber (1). The output end of the pushing cylinder (19) passes through the side of the freezing chamber (1) and is slidably fitted. The output end of the pushing cylinder (19) corresponds to the discharge port (4), and the pushing plate (20) and the pushing cylinder (19) are fixedly connected.

5. A food quick freezing device according to claim 3, characterized in that: The number of the spray heads (17) on the plurality of spray head groups (6) increases as the height inside the freezing chamber (2) increases.

6. A food quick freezing device according to claim 1, characterized in that: A support plate (21) is provided inside the freezing chamber (2), and the upper surface of the support plate (21) is at the same height as the lower edge of the feed port (3).

7. A food quick freezing device according to claim 4, characterized in that: A controller (22) is provided outside the freezing chamber (1), and the cylinder and the driving component (5) are both electrically connected to the controller (22).

8. A food quick freezing device according to claim 1, characterized in that: The discharge pipe (8) is provided with a valve (23) for controlling the opening and closing of the discharge pipe (8).

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