Liquid nitrogen quick-freezing device for food processing

Abstract

The utility model relates to the technical field of freezing equipment, and discloses a liquid nitrogen quick freezing device for food processing, which comprises a machine body, a liquid nitrogen pump fixedly connected in the machine body, a spraying frame mounted at the lower end of the liquid nitrogen pump, a connecting pipe fixedly connected to one end of the liquid nitrogen pump far away from the spraying frame, and a conveyor belt mounted in the machine body, one end of the machine body is fixedly connected with a feeding plate, the other end of the machine body is fixedly connected with a discharging plate, a plurality of shovel plates are installed at the end of the feeding plate and located between the two limiting nails, a sliding column is fixedly connected into the feeding plate, and a plurality of partition plates are slidably connected to the outer surface of the sliding column. When the raw materials are conveyed to the discharging plate, the cleaning structure can clean the conveying belt, and food residues falling off and adhering to the surface of the conveying belt are scraped through the shovel plate, so that the problems that the residues of the food raw materials are brought back into the device by the conveying belt and bacteria breed in the device are solved, and the whole quick-freezing process is more sanitary and safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to frozen equipment technical field, concretely points to a kind of liquid nitrogen quick-freezing device for food processing. BACKGROUND

[0002] Liquid nitrogen quick-freezing device is a kind of equipment using liquid nitrogen extremely low temperature (-196 ℃) to freeze food quickly, and is widely used in food processing industry. Liquid nitrogen quick-freezing device realizes instantaneous freezing by directly spraying or indirectly contacting liquid nitrogen on food surface, using the supercooling characteristics of liquid nitrogen to quickly extract heat from food.

[0003] Food is conveyed to the quick-freezing device by the conveyor belt, and the product is placed into the feeding port. Liquid nitrogen is sprayed into mist through the nozzle to contact with food. The latent heat and sensible heat of liquid nitrogen are used for freezing. After freezing, the product can be frozen in a short time, the formation of ice crystals is reduced, and the cell structure of food is maintained. The dry loss of food is reduced, and the dry loss rate is only 0.6% to 1%, which is much lower than that of traditional freezing methods. The food frozen by liquid nitrogen can better maintain the original texture and flavor after thawing. During the liquid nitrogen quick-freezing process, the nitrogen environment formed on the surface of the food can inhibit the growth of microorganisms and prolong the shelf life.

[0004] The existing device is usually suitable for fresh seafood and other meat foods such as beef, mutton and poultry when liquid nitrogen is used to freeze food. However, during the process of liquid nitrogen quick-freezing, the food needs to be placed on the conveyor belt, and then liquid nitrogen is sprayed during the transportation process driven by the conveyor belt to freeze quickly. The temperature of the conveyor belt continues to drop during the continuous liquid nitrogen quick-freezing process of the device, which makes the skin of these meat foods stick to the conveyor belt and be frozen on the conveyor belt during the quick-freezing process. When the device stops using, the thawed food debris will adhere to the surface of the conveyor, causing bacteria to breed on the conveyor belt, which is not easy to clean and also poses a risk of bacteria attachment to the quick-frozen food. UTILITY MODEL CONTENTS

[0005] The purpose of the present application is to solve the problem of meat food skin sticking to the conveyor belt and causing bacteria breeding on the conveyor belt. The present application provides a liquid nitrogen quick-freezing device for food processing.

[0006] The present application adopts the following technical solutions to achieve the above purpose:

[0007] The utility model provides a kind of liquid nitrogen quick freezing device for food processing, including body, the liquid nitrogen pump is fixedly connected inside the body, the lower end of the liquid nitrogen pump is installed with spraying frame, the end of the liquid nitrogen pump away from spraying frame is fixedly connected with connecting pipe, conveying belt is installed in the body, the conveying belt is fixedly connected with a plurality of limit pegs, the one end of body is fixedly connected with the feed plate, the other end of body is fixedly connected with the discharge plate, the end of feed plate is installed with a plurality of shovel plate, the shovel plate is between two limit pegs, the inside of feed plate is fixedly connected with sliding column, the outer surface of sliding column is slidably connected with a plurality of partition plate, the inside of discharge plate is provided with cleaning structure.

[0008] By adopting the above technical scheme, when the device is needed to quickly freeze food raw materials, the raw materials are first placed on the feed plate, then the raw materials are taken and placed on the conveying belt that is rotating, the limit pegs on the conveying belt will ensure that the raw materials will not slip or deviate during the conveying process, and will also reduce the contact area between the raw materials and the conveying belt, so that when the meat food is placed on the conveying belt, the surface of the meat food is not easy to stick to the conveying belt, and the food debris is not easy to stick to the conveying belt. The raw materials move forward with the movement of the conveying belt, and the liquid nitrogen pump sends liquid nitrogen to the spraying frame through the connecting pipe, and uniformly sprays the raw materials through the spraying frame to achieve quick freezing. The partition plates on the outer surface of the sliding column can be adjusted according to the size of the raw materials to adapt to raw materials of different sizes, so that the raw materials maintain a certain distance to avoid the problem of mutual sticking of the raw materials during quick freezing. When the raw materials are conveyed to the discharge plate, the cleaning structure cleans the conveying belt, and the food residues that fall and stick to the surface of the conveying belt are scraped off by the shovel plates, which prevents the food residues from being brought back into the device by the conveying belt and breeding bacteria in the device, making the whole quick freezing process more hygienic and safe.

[0009] Further, the cleaning structure includes a fixed column fixedly connected inside the discharge plate, the outer surface of the fixed column is rotatably connected with a plurality of shovel plates, a torsional spring is sleeved outside the fixed column, and the two ends of the torsional spring are fixedly connected with the shovel plates and the discharge plate respectively.

[0010] By adopting the above technical scheme, when the raw materials after quick freezing move to the discharge plate with the rotation of the conveying belt, the shovel plates staggered with the limit pegs will scrape the surface of the conveying belt at this time, and the raw material residues frozen on the surface of the conveying belt will be scraped off. And the shovel plates will also receive the moving raw materials, helping the raw materials to separate from the conveying belt and slide along the shovel plates into the discharge plate. At the same time, since the torsional spring is sleeved outside the fixed column, and the two ends of the torsional spring are fixedly connected with the shovel plates and the discharge plate respectively, when the raw materials fall on the shovel plates, the shovel plates will be subjected to downward pressure, at this time the torsional spring will deform and store elastic potential energy. When the raw materials completely slide off the shovel plates, the torsional spring releases the elastic potential energy to drive the shovel plates to reset in order to receive the next raw materials.

[0011] Further, the spacing plate is internally fixedly connected with a limiting column, and the outer surface of the limiting column is slidably connected with a limiting plate.

[0012] By adopting the above technical scheme, the operation of the spacing plate is simple and convenient, which can guide the artificial to place the raw materials on the conveying belt and maintain the distance between the raw materials, thereby reducing the problem of mutual adhesion of the raw materials.

[0013] Further, the limiting plate is fixedly connected with a pull handle at the upper end, a spring is sleeved on the outer side of the limiting column, and the two ends of the spring are fixedly connected with the limiting plate and the spacing plate respectively.

[0014] By adopting the above technical scheme, the limiting plate is no longer in contact with the feeding plate by pulling the pull handle to drive the limiting plate to move upward, the limiting plate is compressed during the movement to enable the limiting plate to slide along the limiting column, thereby driving the spacing plate to slide on the outer surface of the sliding column, loosening the pull handle after adjusting to the appropriate position, the elastic potential energy of the spring is released to push the limiting plate to reset, and the spacing plate is limited and fixed.

[0015] Further, the spraying frame is fixedly connected with a wave pipe at the upper end, the upper end of the wave pipe is in communication with a liquid nitrogen pump, the spraying frame is fixedly connected with an electric push rod at the lower end, the electric push rod is fixedly connected with a main spraying plate at the telescopic end, the wave pipe is fixedly connected with the main spraying plate at the lower end, and the main spraying plate is fixedly connected with a plurality of spray heads at the lower end.

[0016] By adopting the above technical scheme, the electric push rod is started to push the main spraying plate to move downward, the main spraying plate moves downward to drive the shunt pipe to move downward, which enables the main spraying plate to avoid the occurrence of dead angle during spraying on different raw materials.

[0017] Further, side spraying plates are hingedly connected at both ends of the spraying frame, a plurality of spray heads are fixedly connected on one side of the side spraying plate, a shunt pipe is fixedly connected on one side of the main spraying plate, and one end of the shunt pipe away from the main spraying plate is fixedly connected with the side spraying plate.

[0018] By adopting the above technical scheme, the liquid nitrogen pump is started to inject the liquid nitrogen into the wave pipe through the connecting pipe, the liquid nitrogen is introduced into the main spraying plate from the wave pipe, the liquid nitrogen is shunted into the side spraying plate through the shunt pipe on both sides of the main spraying plate, and the liquid nitrogen is sprayed on the raw materials through the spray heads fixed on the surfaces of the main spraying plate and the side spraying plate.

[0019] Further, a driving motor is fixedly connected inside the spraying frame, a main gear is fixedly connected at the output end of the driving motor and penetrates the spraying frame, a slave gear is engaged with the outer surface of the main gear, the spraying frame is rotatably connected with the slave gear on one side, a rotating roller is fixedly connected with the slave gear on one side, a connecting roller is rotatably connected with the spraying frame on one side, the end of the connecting roller is fixedly connected with the side spraying plate, and the outer surfaces of the rotating roller and the connecting roller are both sleeved with a belt.

[0020] By adopting the above technical scheme, when the raw materials of different shapes are quick-frozen, the driving motor is started to drive the main gear to rotate, the main gear drives the slave gear to rotate when rotating, the slave gear drives the rotating roller to rotate, the rotating roller drives the connecting roller to rotate through the belt when rotating, the connecting roller drives the side spray plate to deflect at an angle, the deflection angle of the side spray plate can be adjusted according to the height of the raw materials, so that the side spray plate and the main spray plate can be adjusted according to the raw materials of different shapes, and the side spray plate is close to the raw materials to reduce the dead angle of liquid nitrogen spraying.

[0021] Further, a plurality of screws are threadedly connected to the two sides of the body, and baffles are threadedly connected to the outer surfaces of the screws.

[0022] By adopting the above technical scheme, the screws are loosened according to the height of the raw materials, and then the height of the baffles is adjusted according to the height of the raw materials, and the baffles are fixed by the screws, which reduces the loss of cold air and better insulates the inside of the body.

[0023] In summary, the present application has at least one of the following beneficial effects:

[0024] 1、When the raw materials are fed, the separation of the partition plate can guide the artificial to place the raw materials on the conveyor belt to maintain the distance between the raw materials, reduce the problem of mutual adhesion of the raw materials, and when the quick-frozen raw materials move to the discharge plate along with the rotation of the conveyor belt, the shovel plates staggered with the limiting nails can scrape the surface of the conveyor belt at this time, and the frozen raw material residues falling on the surface of the conveyor belt are scraped, which prevents the food raw material residues from being brought back to the inside of the device by the conveyor belt, and the problem of breeding bacteria in the device, making the whole quick-freezing process more hygienic and safe.

[0025] 2、When the raw materials of different shapes are quick-frozen, the side spray plate is adjusted and the electric push rod drives the main spray plate to move up and down, and when the main spray plate moves downward, the shunt pipe moves downward with the main spray plate, so that the side spray plate and the main spray plate can be adjusted according to the raw materials of different shapes, the side spray plate and the main spray plate are close to the raw materials to reduce the dead angle of liquid nitrogen spraying, thereby increasing the quick-freezing effect and the range of quick-freezing, and the quick-freezing effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a perspective structural schematic view of a liquid nitrogen quick-freezing device for food processing in the present application;

[0027] Figure 2 is a partial sectional view of a feeding plate of a liquid nitrogen quick-freezing device for food processing in the present application;

[0028] Figure 3 is a schematic view of the internal structure of a liquid nitrogen quick-freezing device for food processing in the present application;

[0029] Figure 4 is a partial sectional view of a machine body of a liquid nitrogen quick-freezing device for food processing in the present application;

[0030] Figure 5 is a schematic view of a spraying frame of a liquid nitrogen quick-freezing device for food processing in the present application;

[0031] Figure 6 is a schematic view of a feeding plate structure of a liquid nitrogen quick-freezing device for food processing in the present application;

[0032] Figure 7 is an enlarged schematic view of A in the present application; Figure 2

[0033] Figure 8 is an enlarged schematic view of B in the present application; Figure 4

[0034] Figure 9 is an enlarged schematic view of C in the present application. Figure 6 Explanation of reference signs:

[0035] 1, machine body; 2, connecting pipe; 3, liquid nitrogen pump; 4, feeding plate; 5, baffle; 6, screw; 7, discharging plate; 8, spraying frame; 9, driving motor; 10, main gear; 11, side spraying plate; 12, main spraying plate; 13, conveying belt; 14, limiting plate; 15, pull handle; 16, limiting peg; 17, fixing column; 18, torsional spring; 19, shovel plate; 20, driven gear; 21, rotating roller; 22, connecting roller; 23, belt; 24, electric push rod; 25, wave tube; 26, partition plate; 27, sliding column; 28, limiting column; 29, spring; 30, shunt pipe.

[0036] DETAILED DESCRIPTION The technical solutions in the embodiments of the present application will be clearly and completely described below, and obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0037] Figures 1-9 Reference and

[0038] , Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 ​​The utility model provides a technical scheme: a food processing is with liquid nitrogen quick -frozen device, including body 1, body 1 inside fixedly connected with liquid nitrogen pump 3, liquid nitrogen pump 3 lower end is installed with the spray frame 8, liquid nitrogen pump 3 is fixedly connected with the connecting pipe 2 away from the spray frame 8 one end, body 1 inside is installed with conveyer belt 13, a plurality of limit pegs 16 are fixedly connected on conveyer belt 13, body 1 one end fixedly connected with the feed plate 4, body 1 other end is fixedly connected with the discharge plate 7, the feed plate 4 end is installed with a plurality of shovel plate 19, shovel plate 19 is located between two limit pegs 16, the feed plate 4 inside fixedly connected with sliding column 27, a plurality of partition plates 26 are slidably connected to the outer surface of sliding column 27, the discharge plate 7 inside is provided with cleaning structure.

[0039] When the food raw materials need to be quick-frozen by the device, first, the raw materials are placed on the feed plate 4, then the raw materials are taken and placed on the conveyer belt 13 which is rotating, the limit pegs 16 on the conveyer belt 13 can ensure that the raw materials will not slip or deviate during the conveying process, and can also reduce the contact area between the raw materials and the conveyer belt, so that when the meat food is placed on the conveyer belt 13, the surface of the meat food is not easy to stick to the conveyer belt 13, causing the conveyer belt 13 to be stuck with food debris. While the raw materials move with the conveyer belt 13, the liquid nitrogen pump 3 delivers liquid nitrogen to the spray frame 8 through the connecting pipe 2, and uniformly sprays the raw materials through the spray frame 8, achieving rapid quick-freezing. The partition plates 26 on the outer surface of the sliding column 27 can be adjusted according to the size of the raw materials to adapt to raw materials of different sizes, so that the raw materials maintain a certain distance to avoid the problem of mutual sticking of the raw materials during the quick-freezing process. When the raw materials are conveyed to the discharge plate 7, the cleaning structure cleans the conveyer belt 13, and the food debris that falls and sticks to the surface of the conveyer belt 13 is scraped off by the shovel plate 19, which prevents the food debris from being brought back into the device by the conveyer belt 13, causing bacteria to breed in the device, making the entire quick-freezing process more hygienic and safe.

[0040] Referring to Figure 1 With Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 9 The cleaning structure includes a fixed column 17 fixedly connected inside the discharge plate 7, the fixed column 17 is rotatably connected with a plurality of shovel plates 19 on the outer surface, a torsional spring 18 is sleeved on the outer side of the fixed column 17, and the two ends of the torsional spring 18 are fixedly connected with the shovel plates 19 and the discharge plate 7 respectively. A limiting column 28 is fixedly connected inside the partition plate 26, and the limiting column 28 is slidably connected with a limiting plate 14 on the outer surface. A pull handle 15 is fixedly connected to the upper end of the limiting plate 14, a spring 29 is sleeved on the outer side of the limiting column 28, and the two ends of the spring 29 are fixedly connected with the limiting plate 14 and the partition plate 26 respectively.

[0041] When the raw materials are loaded, the operator can pull the pull handle 15 to drive the limiting plate 14 to move upwards so that the limiting plate 14 no longer interferes with the feeding plate 4. The limiting plate 14 will compress the spring 29 during movement, so that the limiting plate 14 can slide along the limiting column 28, and then drive the partition plate 26 to slide on the outer surface of the sliding column 27. After adjusting to the appropriate position, release the pull handle 15, the elastic potential energy of the spring 29 is released to push the limiting plate 14 to reset, and the partition plate 26 is limited and fixed. The operation is simple and convenient, which can guide the artificial to place the raw materials on the conveyor belt 13 to maintain the distance between the raw materials and reduce the problem of mutual adhesion of the raw materials. When the frozen raw materials move towards the discharge plate 7 along with the rotation of the conveyor belt 13, the shovel plate 19 staggered with the limiting nails 16 will scrape the surface of the conveyor belt 13 at this time, and the raw material residues frozen on the surface of the conveyor belt 13 will be scraped off. The shovel plate 19 will also receive the moving raw materials, helping the raw materials to separate from the conveyor belt 13 and slide along the shovel plate 19 into the discharging plate. At the same time, since the fixed column 17 is provided with a torsional spring 18 on the outside, the two ends of the torsional spring 18 are respectively fixedly connected with the shovel plate 19 and the discharging plate 7. When the raw materials fall on the shovel plate 19, the shovel plate 19 will be subjected to downward pressure, and at this time the torsional spring 18 will be deformed and store elastic potential energy. When the raw materials completely slide off the shovel plate 19, the torsional spring 18 releases the elastic potential energy to drive the shovel plate 19 to reset in order to receive the next raw material. This prevents the residues of the food raw materials from being brought back into the device by the conveyor belt 13, and prevents the problem of bacteria breeding in the device, making the entire quick freezing process more hygienic and safe.

[0042] Referring to Figure 3 with Figure 4 , Figure 5 , Figure 8 The upper end of the spraying frame 8 is fixedly connected with a wave pipe 25, the upper end of the wave pipe 25 is in communication with the liquid nitrogen pump 3, the lower end of the spraying frame 8 is fixedly connected with an electric push rod 24, the telescopic end of the electric push rod 24 is fixedly connected with a main spraying plate 12, the lower end of the wave pipe 25 is fixedly connected with the main spraying plate 12, and the lower end of the main spraying plate 12 is fixedly connected with a plurality of spray heads. Both ends of the spraying frame 8 are hingedly connected with side spraying plates 11, one side of each side spraying plate 11 is fixedly connected with a plurality of spray heads, one side of the main spraying plate 12 is fixedly connected with a shunt pipe 30, and the end of the shunt pipe 30 away from the main spraying plate 12 is fixedly connected with the side spraying plate 11. The inside of the spraying frame 8 is fixedly connected with a driving motor 9, the output end of the driving motor 9 is fixedly connected with a main gear 10 penetrating through the spraying frame 8, the outer surface of the main gear 10 is engaged with a slave gear 20, one side of the slave gear 20 is rotatably connected with the spraying frame 8, one side of the slave gear 20 is fixedly connected with a rotating roller 21, one side of the spraying frame 8 is rotatably connected with a connecting roller 22, the end of the connecting roller 22 is fixedly connected with the side spraying plate 11, and the outer surfaces of the rotating roller 21 and the connecting roller 22 are both sleeved with a belt 23. The two sides of the machine body 1 are threadedly connected with a plurality of screw rods 6, and the outer surfaces of the screw rods 6 are threadedly connected with baffles 5.

[0043] When the device is used to quick-freeze food raw materials, first adjust the height of the screw 6 according to the height of the raw materials, then adjust the height of the baffle 5 according to the height of the raw materials and fix the baffle 5 through the screw 6, which reduces the loss of cold air and makes the inside of the machine body 1 better insulated. Then, when the conveyor belt 13 transports the food raw materials, start the liquid nitrogen pump 3 to inject liquid nitrogen into the wave pipe 25 through the connecting pipe 2, then guide the liquid nitrogen into the main spray plate 12 through the wave pipe 25, and then split the liquid nitrogen into the side spray plate 11 through the shunt pipe 30 on both sides of the main spray plate 12. Spray the raw materials with liquid nitrogen through the spray heads fixed on the surfaces of the main spray plate 12 and the side spray plate 11. When quick-freezing raw materials of different shapes, start the drive motor 9 to drive the main gear 10 to rotate, which drives the gear 20 to rotate when the main gear 10 rotates, which drives the rotating roller 21 to rotate when the gear 20 rotates, which drives the connecting roller 22 to rotate through the belt 23 when the rotating roller 21 rotates, which drives the side spray plate 11 to deflect at an angle when the connecting roller 22 rotates. The deflection angle of the side spray plate 11 can be adjusted according to the height of the raw materials, so that the side spray plate 11 and the main spray plate 12 can be adjusted according to raw materials of different shapes, so that the side spray plate 11 is close to the raw materials to reduce the dead angle of liquid nitrogen spraying. At the same time, start the electric push rod 24 to push the main spray plate 12 to move downward, which drives the shunt pipe 30 and the main spray plate 12 to move downward when the main spray plate 12 moves downward. This allows the side spray plate 11 and the main spray plate 12 to avoid dead angles when spraying different raw materials, thereby increasing the quick-freezing effect and the range of quick-freezing, and achieving better quick-freezing effect.

[0044] Working principle: When loading raw materials, the operator can pull the handle 15 to drive the limiting plate 14 to move upward so that the limiting plate 14 no longer interferes with the feeding plate 4. The limiting plate 14 will compress the spring 29 during movement, so that the limiting plate 14 can slide along the limiting column 28, thereby driving the partition plate 26 to slide on the outer surface of the sliding column 27. After adjusting to the appropriate position, release the handle 15, the elastic potential energy of the spring 29 is released to push the limiting plate 14 to reset, and the partition plate 26 is limited and fixed. The operation is simple and convenient, which can guide manual placement of raw materials on the conveyor belt 13 to maintain the distance between the raw materials and reduce the problem of mutual adhesion of the raw materials.

[0045] When the device is used to quick-freeze food raw materials, first, the height of the screw rod 6 is adjusted according to the height of the raw materials, then the height of the baffle 5 is adjusted according to the height of the raw materials, and the baffle 5 is fixed by the screw rod 6, which reduces the loss of cold air and makes the inside of the machine body 1 better heat preservation, then when the conveyor belt 13 transports the food raw materials, the liquid nitrogen pump 3 is started to inject liquid nitrogen into the wave pipe 25 through the connecting pipe 2, then the liquid nitrogen is introduced into the main spray plate 12 by the wave pipe 25, and then the liquid nitrogen is introduced into the side spray plate 11 through the shunt pipe 30 on both sides of the main spray plate 12, and then the liquid nitrogen is sprayed on the raw materials through the spray head fixed on the surface of the main spray plate 12 and the side spray plate 11, and when the raw materials of different shapes are quick-frozen, the driving motor 9 is started to drive the main gear 10 to rotate, the main gear 10 drives the gear 20 to rotate when rotating, the gear 20 drives the rotating roller 21 to rotate when rotating, the rotating roller 21 drives the connecting roller 22 to rotate through the belt 23 when rotating, and the connecting roller 22 drives the side spray plate 11 to deflect at an angle when rotating, the deflection angle of the side spray plate 11 can be adjusted according to the height of the raw materials, so that the side spray plate 11 and the main spray plate 12 can be adjusted according to the different shapes of the raw materials, so that the side spray plate 11 is close to the raw materials to reduce the dead angle of liquid nitrogen spraying, and at the same time, the electric push rod 24 is started to push the main spray plate 12 to move downward, the main spray plate 12 drives the shunt pipe 30 to move downward when moving downward, which makes the side spray plate 11 and the main spray plate 12 avoid the appearance of dead angle when spraying different raw materials, thereby increasing the quick-freezing effect and the range of quick-freezing, and making the quick-freezing effect better.

[0046] When the quick-frozen raw materials move to the discharge plate 7 along with the rotation of the conveyor belt 13, the shovel plate 19 staggered with the limiting nails 16 will scrape the surface of the conveyor belt 13 at this time, and the shovel plate 19 will also receive the moving raw materials, helping the raw materials to separate from the conveyor belt 13 and make them slide into the discharge plate along the shovel plate 19, and at the same time, since the fixed column 17 is sleeved with the torsional spring 18 outside, the torsional spring 18 is fixedly connected at both ends with the shovel plate 19 and the discharge plate 7, when the raw materials fall on the shovel plate 19, the shovel plate 19 will be subjected to downward pressure, at this time, the torsional spring 18 will be deformed and store elastic potential energy, when the raw materials completely slide off the shovel plate 19, the torsional spring 18 releases the elastic potential energy to drive the shovel plate 19 to reset, so as to receive the next raw materials, which prevents the device from bringing the residues of the food raw materials back into the device, and prevents the problem of breeding bacteria in the device, making the whole quick-freezing process more sanitary and safe.

[0047] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A liquid nitrogen quick-freezing device for food processing, comprising a body (1), characterized in that: A liquid nitrogen pump (3) is fixedly connected inside the machine body (1). A spray frame (8) is installed at the lower end of the liquid nitrogen pump (3). A connecting pipe (2) is fixedly connected to the end of the liquid nitrogen pump (3) away from the spray frame (8). A conveyor belt (13) is installed inside the machine body (1). Several limiting pins (16) are fixedly connected on the conveyor belt (13). A feed plate (4) is fixedly connected to one end of the machine body (1). A discharge plate (7) is fixedly connected to the other end of the machine body (1). Several shovels (19) are installed at the end of the feed plate (4). The shovels (19) are located between two limiting pins (16). A sliding column (27) is fixedly connected inside the feed plate (4). Several partition plates (26) are slidably connected to the outer surface of the sliding column (27). A cleaning structure is provided inside the discharge plate (7).

2. The liquid nitrogen quick-freezing device for food processing according to claim 1, characterized in that: The cleaning structure includes a fixed column (17) fixedly connected inside the discharge plate (7). The outer surface of the fixed column (17) is rotatably connected to several shovels (19). A torsion spring (18) is sleeved on the outside of the fixed column (17). The two ends of the torsion spring (18) are fixedly connected to the shovels (19) and the discharge plate (7) respectively.

3. The liquid nitrogen quick-freezing device for food processing according to claim 2, characterized in that: The partition plate (26) is fixedly connected to a limiting post (28) inside, and the limiting post (28) is slidably connected to a limiting plate (14) on its outer surface.

4. The liquid nitrogen quick-freezing device for food processing according to claim 3, characterized in that: A handle (15) is fixedly connected to the upper end of the limiting plate (14), and a spring (29) is sleeved on the outside of the limiting post (28). The two ends of the spring (29) are fixedly connected to the limiting plate (14) and the partition plate (26) respectively.

5. The liquid nitrogen quick-freezing device for food processing according to claim 1, characterized in that: The upper end of the spray frame (8) is fixedly connected to a corrugated pipe (25), the upper end of the corrugated pipe (25) is connected to a liquid nitrogen pump (3), the lower end of the spray frame (8) is fixedly connected to an electric actuator (24), the telescopic end of the electric actuator (24) is fixedly connected to a main spray plate (12), the lower end of the corrugated pipe (25) is fixedly connected to the main spray plate (12), and the lower end of the main spray plate (12) is fixedly connected to several nozzles.

6. The liquid nitrogen quick-freezing device for food processing according to claim 5, characterized in that: Both ends of the spray frame (8) are hinged with side spray plates (11). Several nozzles are fixedly connected to one side of the side spray plate (11). A diverter pipe (30) is fixedly connected to one side of the main spray plate (12). The end of the diverter pipe (30) away from the main spray plate (12) is fixedly connected to the side spray plate (11).

7. The liquid nitrogen quick-freezing device for food processing according to claim 6, characterized in that: A drive motor (9) is fixedly connected inside the spray frame (8). The output end of the drive motor (9) passes through the spray frame (8) and is fixedly connected to a main gear (10). A driven gear (20) meshes with the outer surface of the main gear (10). One side of the spray frame (8) is rotatably connected to the driven gear (20). A rotating roller (21) is fixedly connected to one side of the driven gear (20). A connecting roller (22) is rotatably connected to one side of the spray frame (8). The end of the connecting roller (22) is fixedly connected to the side spray plate (11). A belt (23) is fitted on the outer surface of both the rotating roller (21) and the connecting roller (22).

8. The liquid nitrogen quick-freezing device for food processing according to claim 1, characterized in that: The machine body (1) has several screws (6) threadedly connected to both sides, and the outer surface of the screws (6) is threadedly connected to baffles (5).

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