Rapid freezing and fresh-keeping device for durian pulp

Abstract

The utility model relates to the technical field of quick freezing and fresh keeping, and discloses a quick freezing and fresh keeping device for durian pulp, which comprises a cabinet body, the top of the cabinet body is fixedly connected with a shell, the top of the shell is fixedly connected with a motor I, and the output end of the motor I penetrates through the shell and is fixedly connected with a driving wheel. A rotating rod is rotatably connected to the right side of the interior of the shell, a driven wheel is fixedly connected to the middle of the outer wall of the rotating rod, the driving wheel is in meshed connection with the driven wheel, a first air stirring rod is rotatably connected to the left side of the top of the inner wall of the cabinet body, and the top end of the first air stirring rod penetrates through the cabinet body and is fixedly connected with the driving wheel. According to the utility model, the motor I is started, so that nitrogen is more uniformly contacted with the surfaces of food materials through turbulent flow generated in the cabinet body, the rotating rod is used for reducing the rotating speed through the reduction gear box and then transmitting power to the transmission rod, the placed pulp can be uniformly and fully contacted with the nitrogen, and the freezing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of rapid freezing and preservation technology, and in particular to a rapid freezing and preservation device for durian pulp. Background Technology

[0002] Durian holds a special place in Southeast Asian culture. It is not only an important economic crop in the region, but also a tropical delicacy sought after by food lovers around the world due to its unique flavor. Durian flesh is the edible part inside the durian fruit, consisting of fleshy arils. It is pale yellow to golden yellow in color, soft and juicy in texture, and has a complex and highly recognizable aroma.

[0003] Durian pulp is rich in water, sugar, and nutrients. At room temperature, microorganisms multiply rapidly, leading to flavor loss and pulp spoilage. This makes durian pulp unsuitable for long-distance transportation. Therefore, a rapid freezing and preservation device for durian pulp is needed. Through the multiple functions of low-temperature antibacterial and flavor preservation, the shelf life is extended, and its taste and nutrition are better preserved.

[0004] Early durian freezing devices mostly used direct-flow liquid nitrogen nozzles, which cooled the fruit pulp by vaporizing liquid nitrogen. However, due to the high density and poor fluidity of liquid nitrogen after vaporization, the low-temperature nitrogen gas tended to accumulate at the bottom of the cabinet, resulting in insufficient freezing efficiency for the upper layer of fruit pulp and over-freezing of the lower layer. To solve this problem, a unidirectional axial flow fan was used to force airflow circulation, pushing the accumulated nitrogen gas upwards to expand the coverage of cold air and accelerate the heat exchange rate on the surface of the fruit pulp. However, in actual use, because the unidirectional fan caused the nitrogen gas to circulate along a fixed path, low-temperature blind spots were formed at the top and corners of the cabinet due to airflow attenuation. This resulted in the durian pulp not being frozen evenly, reducing freezing efficiency and failing to meet the needs of users. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a rapid freezing and preservation device for durian pulp, which aims to improve the problem of poor uniformity of nitrogen distribution caused by the unidirectional fan circulating nitrogen along a fixed path in the prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: 1. A rapid freezing and preservation device for durian pulp, comprising a cabinet, a shell fixedly connected to the top of the cabinet, a motor fixedly connected to the top of the shell, the output end of the motor penetrating the shell and fixedly connected to a drive wheel, a rotating rod rotatably connected to the inner right side of the shell, a driven wheel fixedly connected to the middle of the outer wall of the rotating rod, the drive wheel and the driven wheel meshing together, a stirring rod rotatably connected to the top left side of the inner wall of the cabinet, the top end of the stirring rod penetrating the cabinet and fixedly connected to the drive wheel, the cabinet... A reduction gearbox is fixedly connected to the top right side of the inner wall of the cabinet. The bottom end of the rotating rod passes through the cabinet and is rotatably connected to the reduction gearbox. A second agitator rod is rotatably connected to the bottom right side of the reduction gearbox. A transmission rod is rotatably connected to the bottom left side of the reduction gearbox. A chassis is fixedly connected to the bottom end of the transmission rod. Support rods are fixedly connected to the top of the chassis around its four sides. Multiple trays are set inside the cabinet, and multiple support rods pass through the corresponding trays. A tapping mechanism is set inside the right side of the cabinet. The tapping mechanism is used to prevent the durian pulp from freezing and sticking together during rapid freezing.

[0007] As a further description of the above technical solution:

[0008] The striking mechanism includes a second motor, which is fixedly connected to the upper right side of the outer wall of the cabinet. The output end of the second motor passes through the cabinet and is fixedly connected to an eccentric wheel. A connecting rod is rotatably connected to the bottom right end of the eccentric wheel. A sliding groove is provided on the right side of the inner wall of the cabinet. A sliding rod is slidably connected inside the sliding groove. The other end of the connecting rod is rotatably connected to the sliding rod. Multiple striking rods are fixedly connected to the left side of the sliding rod.

[0009] As a further description of the above technical solution:

[0010] The cabinet body is provided with a cabinet door on the front side. Hinges are fixedly connected to the upper and lower sides of the left side of the front wall of the cabinet door. The cabinet door is rotatably connected to the cabinet body through the hinges.

[0011] As a further description of the above technical solution:

[0012] An observation window is provided in the middle of the front side of the cabinet door, and a window frame is fixedly connected to the outside of the observation window.

[0013] As a further description of the above technical solution:

[0014] A locking ring is fixedly connected to the right side of the front wall of the cabinet door, and a latch is fixedly connected to the right side of the front wall of the cabinet body.

[0015] As a further description of the above technical solution:

[0016] A conveying pipe is connected to the upper rear part of the cabinet. One end of the conveying pipe is fixedly connected to a spray head. A liquid nitrogen tank is set on the left side of the cabinet. The other end of the conveying pipe is fixedly connected to the liquid nitrogen tank.

[0017] As a further description of the above technical solution:

[0018] The liquid nitrogen tank has fixing straps on the upper and lower sides of its outer wall. The front and rear ends of the left side of the two fixing straps are threaded with screws. Multiple screws pass through the corresponding fixing straps in sequence and are threaded to the cabinet body.

[0019] As a further description of the above technical solution:

[0020] The cabinet has multiple fixing buckles fixedly connected to the front of its inner wall, and the inner walls of the multiple fixing buckles are fixedly connected to the same adhesive strip.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, when the device rapidly freezes durian pulp, after the liquid nitrogen vaporizes into nitrogen gas, the low-temperature nitrogen gas is deposited at the bottom of the cabinet. The motor is started, which drives the agitator rod 1 and agitator rod 2 to rotate in opposite directions. This causes turbulence inside the cabinet, making the nitrogen gas more evenly contact the surface of the food. The rotating rod reduces the rotation speed through a reduction gearbox and then transmits power to the transmission rod, causing the base to rotate the tray through the support rod. This ensures that the placed pulp is evenly and fully in contact with the nitrogen gas, improving freezing efficiency and meeting the needs of users.

[0023] 2. In this utility model, during the rapid freezing process of durian pulp, the pulp sticks together due to the rapid freezing of surface moisture or the adhesion of ice crystals between pulp pieces. By starting motor two, the circular motion of the eccentric wheel is converted into the reciprocating motion of the connecting rod. The connecting rod drives the sliding rod to move up and down reciprocally. The reciprocating motion of the striking rod continuously taps the tray, causing the pulp to shift slightly, reducing the surface resting time, inhibiting the formation of continuous ice film, and the vibration separates the sticky pulp without damaging it. Attached Figure Description

[0024] Figure 1 This is a perspective view of the rapid freezing and preservation device for durian pulp proposed in this utility model;

[0025] Figure 2 This is a front view of the rapid freezing and preservation device for durian pulp proposed in this utility model;

[0026] Figure 3 This is a rear view of the rapid freezing and preservation device for durian pulp proposed in this utility model;

[0027] Figure 4This is a cross-sectional view of the cabinet and shell of the rapid freezing and preservation device for durian pulp proposed in this utility model;

[0028] Figure 5 This is a partial structural schematic diagram of the durian pulp rapid freezing and preservation device proposed in this utility model.

[0029] Legend:

[0030] 1. Cabinet body; 2. Striking mechanism; 201. Motor II; 202. Eccentric wheel; 203. Connecting rod; 204. Slide groove; 205. Slide rod; 206. Striking rod; 3. Housing; 4. Motor I; 5. Drive wheel; 6. Rotating rod; 7. Driven wheel; 8. Stirring rod I; 9. Reduction gearbox; 10. Stirring rod II; 11. Transmission rod; 12. Chassis; 13. Support rod; 14. Tray; 15. Cabinet door; 16. Hinge; 17. Observation window; 18. Window frame; 19. Locking ring; 20. Locking buckle; 21. Conveying pipe; 22. Spray head; 23. Liquid nitrogen tank; 24. Fixing strap; 25. Screw; 26. Fixing buckle; 27. Adhesive strip. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 3 , Figure 4 and Figure 5This utility model provides an embodiment of a rapid freezing and preservation device for durian pulp, comprising a cabinet 1, a housing 3 fixedly connected to the top of the cabinet 1, and mechanical parts installed inside the housing 3. A motor 4 is fixedly connected to the top of the housing 3, and the output end of the motor 4 passes through the housing 3 and is fixedly connected to a drive wheel 5. The output end of the motor 4 rotates to drive the drive wheel 5 to rotate. A rotating rod 6 is rotatably connected to the right side inside the housing 3, and a driven wheel 7 is fixedly connected to the middle of the outer wall of the rotating rod 6. The drive wheel 5 and the driven wheel 7 are meshed and connected, and the drive wheel 5 drives the driven wheel 7 to rotate together in opposite directions. A stirring rod 8 is rotatably connected to the top left side of the inner wall of the cabinet 1. The stirring rod 8 agitates the airflow inside the cabinet 1. The top end of the stirring rod 8 passes through the cabinet 1 and is fixedly connected to the drive wheel 5. A reduction gearbox 9 is fixedly connected to the top right side of the inner wall of the cabinet 1. The bottom end of the rotating rod 6 passes through the cabinet 1 and is rotatably connected to the reduction gearbox 9. A second stirring rod 10 is rotatably connected to the bottom right side of the reduction gearbox 9. The connection point of the rotating rod 6 and the agitator rod 10 in the reduction gearbox 9 is the same, and they rotate at the same speed. The rotating rod 6 drives the agitator rod 10 to rotate. The bottom left side of the reduction gearbox 9 is rotatably connected to the transmission rod 11. The reduction gearbox 9 reduces the rotational force transmitted by the rotating rod 6, thereby reducing the speed of the transmission rod 11. The bottom end of the transmission rod 11 is fixedly connected to the chassis 12, and the transmission rod 11 drives the chassis 12 to rotate. The top of the chassis 12 is fixedly connected to the four sides of the chassis. The cabinet 1 is equipped with multiple supports. The tray 14 is used to hold fruit pulp. Multiple support rods 13 pass through the corresponding trays 14 and support the trays 14. The upper rear part of the cabinet 1 is connected to a conveying pipe 21, which transmits liquid nitrogen to the spray head 22. One end of the conveying pipe 21 is fixedly connected to the spray head 22, which sprays liquid nitrogen evenly. A liquid nitrogen tank 23 is set on the left side of the cabinet 1. The liquid nitrogen tank 23 is used to store liquid nitrogen. The other end of the conveying pipe 21 is fixedly connected to the liquid nitrogen tank 23.

[0033] Specifically, during the rapid freezing of durian pulp, the pulp is first placed on tray 14. Liquid nitrogen tank 23 is opened, and liquid nitrogen flows through delivery pipe 21 to spray head 22, where it is evenly sprayed. After the liquid nitrogen vaporizes into nitrogen gas, due to its high density and poor fluidity, the low-temperature nitrogen gas settles at the bottom of cabinet 1. Motor 4 is started, and its output drives drive wheel 5 to rotate. Drive wheel 5, through meshing, drives driven wheel 7 to rotate synchronously. Due to the characteristics of gears, drive wheel 5 and driven wheel 7 rotate in opposite directions. Drive wheel 5 then drives agitator bar 8. The driven wheel 7 rotates, while the driven wheel 7 drives the agitator rod 10 to rotate via the rotating rod 6. This rotation in opposite directions ensures that the airflow inside the cabinet 1 is fully agitated. Through the turbulence generated, the nitrogen gas has a more uniform contact with the surface of the food. At the same time, the cooperation between the rotating rod 6 and the agitator rod 10 enables the reduction gearbox 9 to function, reducing the rotation speed and transmitting it to the transmission rod 11. The transmission rod 11 drives the chassis 12 to rotate, and the chassis 12 then drives the tray 14 to rotate together via the support rod 13. This ensures that the fruit placed on the tray 14 can have a uniform and sufficient contact with the nitrogen gas, thereby improving the freezing efficiency.

[0034] Reference Figure 4 and Figure 5 The striking mechanism 2 includes a second motor 201, which is fixedly connected to the upper right side of the outer wall of the cabinet 1. The output end of the second motor 201 passes through the cabinet 1 and is fixedly connected to an eccentric wheel 202. The second motor 201 drives the eccentric wheel 202 to rotate. A connecting rod 203 is rotatably connected to the bottom right end of the eccentric wheel 202. The eccentric wheel 202 converts the circular motion into the reciprocating motion of the connecting rod 203. A slide groove 204 is provided on the right side of the inner wall of the cabinet 1. A slide rod 205 is slidably connected inside the slide groove 204. The slide groove 204 limits the movement of the slide rod 205. In addition to its guiding function, the other end of the connecting rod 203 is rotatably connected to the slide rod 205. The connecting rod 203 will drive the slide rod 205 to reciprocate together. Multiple striking rods 206 are fixedly connected to the left side of the slide rod 205. The striking rods 206 continuously tap the tray 14 to prevent the fruit pulp from sticking together. Multiple fixing buckles 26 are fixedly connected to the front side of the inner wall of the cabinet 1. The same adhesive strip 27 is fixedly connected to the inner wall of the multiple fixing buckles 26. The adhesive strip 27 can be quickly fixed by the fixing buckles 26. The adhesive strip 27 can play a sealing role when the cabinet door 15 is closed.

[0035] Specifically, during the rapid freezing process of durian pulp, the rapid freezing of surface moisture or the adhesion of ice crystals between pulp particles can cause the pulp to stick together. This triggers motor 201, whose output drives eccentric wheel 202 to rotate. One end of eccentric wheel 202 is connected to it via connecting rod 203. Its rotational characteristics convert the circular motion into the reciprocating motion of connecting rod 203. The reciprocating motion of connecting rod 203, in turn, drives slide rod 205 to move up and down within slide groove 204. The up and down movement of connecting rod 203 causes tapping rod 206 to move accordingly. Through the reciprocating movement of tapping rod 206, the tray 14 is continuously tapped, causing the pulp to undergo slight displacement. This reduces the static time on the surface of the pulp, inhibits the formation of a continuous ice film, and simultaneously separates the sticky pulp through vibration without damaging it.

[0036] Reference Figure 1 and Figure 2 The cabinet body 1 has a cabinet door 15 on the front side. The cabinet door can seal the cabinet body 1 to prevent liquid nitrogen leakage during operation. Hinges 16 are fixedly connected to the upper and lower sides of the left side of the front wall of the cabinet door 15. The cabinet door 15 can be opened and closed through the hinges 16. The cabinet door 15 is rotatably connected to the cabinet body 1 through the hinges 16. An observation window 17 is opened in the middle of the front side of the cabinet door 15. The freezing status of the durian pulp can be observed through the observation window 17. A window frame 18 is fixedly connected to the outside of the observation window 17. The window frame 18 protects the observation window.

[0037] Specifically, the cabinet door 15 seals the freezer space to prevent cold air leakage and external heat intrusion, maintaining a low internal temperature environment. The hinge 16 connects the cabinet door 15 to the cabinet body 1, supporting the smooth opening and closing of the cabinet door 15. The observation window 17 allows external observation of the cabinet's internal status, avoiding temperature fluctuations caused by frequent door opening. The window frame 18 is used to fix the observation window 17 and maintain its airtightness, as well as to protect the observation window 17.

[0038] Reference Figure 1 , Figure 2 and Figure 3 A locking ring 19 is fixedly connected to the right side of the front wall of the cabinet door 15, and a latch 20 is fixedly connected to the right side of the front wall of the cabinet body 1. The combination of the locking ring 19 and the latch 20 makes the cabinet door 15 more secure when closed and prevents it from being opened at will. Fixing straps 24 are provided on the upper and lower sides of the outer wall of the liquid nitrogen tank 23. The fixing straps 24 fix the liquid nitrogen tank 23. Screws 25 are threaded to the front and rear ends of the left side of the two fixing straps 24. Multiple screws 25 pass through the corresponding fixing straps 24 in sequence and are threaded to the cabinet body 1. The fixing straps 24 are connected to the cabinet body 1 by the screws 25.

[0039] Specifically, the combination of locking ring 19 and latch 20 ensures that cabinet door 15 is tightly closed, maintaining internal pressure and sealing. Liquid nitrogen tank 23 serves as a cold source for storing liquid nitrogen. Fixing strap 24 is used to fix liquid nitrogen tank 23 to prevent it from shifting or tipping over. Screw 25 connects fixing strap 24 to cabinet 1, transmitting constraint force and making the fixing strap 24 more secure in fixing liquid nitrogen tank 23.

[0040] Working Principle: When rapidly freezing durian pulp, the device first places the pulp on tray 14, then opens liquid nitrogen tank 23, allowing liquid nitrogen to be transferred through conveyor pipe 21 to spray head 22. The spray head 22 evenly sprays the liquid nitrogen. After the liquid nitrogen vaporizes into nitrogen gas, due to its high density and poor fluidity, the low-temperature nitrogen gas settles at the bottom of cabinet 1. At this point, motor 4 is started, and its output drives the drive wheel 5 to rotate. The drive wheel 5, through meshing, causes the driven wheel 7 to rotate as well. Due to the characteristics of gears, the drive wheel 5 and the driven wheel 7 rotate in opposite directions. The drive wheel 5 drives the agitator... The fan rod 8 rotates, and the driven wheel 7 drives the agitator rod 10 to rotate via the rotating rod 6. Through the rotation in opposite directions, the airflow inside the cabinet 1 can be fully agitated. The resulting turbulence makes the nitrogen gas more evenly contact the surface of the food. At the same time, the rotating rod 6 and the agitator rod 10 enable the reduction gearbox 9 to function, reducing the rotation speed and transmitting it to the transmission rod 11. The transmission rod 11 drives the base 12 to rotate, and the base 12 then drives the tray 14 to rotate together via the support rod 13. This allows the fruit placed on the tray 14 to be evenly and fully contacted with the nitrogen gas, improving freezing efficiency.

[0041] Furthermore, during the rapid freezing of durian pulp, the pulp may stick together due to the rapid freezing of surface moisture or the adhesion of ice crystals between the pulp pieces. By starting motor 201, the output end of motor 201 drives eccentric wheel 202 to rotate. One end of eccentric wheel 202 is connected to connecting rod 203. The rotational characteristics of eccentric wheel 202 convert the circular motion into the reciprocating motion of connecting rod 203. The reciprocating motion of connecting rod 203 drives slide rod 205 to move up and down in slide groove 204. The up and down movement of connecting rod 203 causes tapping rod 206 to move accordingly. The reciprocating movement of tapping rod 206 continuously taps tray 14, causing the pulp to slightly shift, reducing the surface resting time, inhibiting the formation of continuous ice film, and separating the sticky pulp without damaging it.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for quick-freezing and preserving durian pulp, comprising a cabinet (1), characterized in that: The top of the cabinet (1) is fixedly connected to a housing (3), and the top of the housing (3) is fixedly connected to a motor (4). The output end of the motor (4) passes through the housing (3) and is fixedly connected to a drive wheel (5). The inside right side of the housing (3) is rotatably connected to a rotating rod (6). The middle of the outer wall of the rotating rod (6) is fixedly connected to a driven wheel (7). The drive wheel (5) and the driven wheel (7) are meshed together. The top left side of the inner wall of the cabinet (1) is rotatably connected to a stirring rod (8). The top end of the stirring rod (8) passes through the cabinet (1) and is fixedly connected to the drive wheel (5). The top right side of the inner wall of the cabinet (1) is fixedly connected to a reduction gearbox (9). The rotating rod ( The bottom end of 6) passes through the cabinet (1) and is rotatably connected to the reduction gearbox (9). The bottom right side of the reduction gearbox (9) is rotatably connected to the agitator rod (10). The bottom left side of the reduction gearbox (9) is rotatably connected to the transmission rod (11). The bottom end of the transmission rod (11) is fixedly connected to the chassis (12). The top of the chassis (12) is fixedly connected to the support rods (13) around its perimeter. The cabinet (1) is equipped with multiple trays (14). The multiple support rods (13) pass through the corresponding trays (14). The cabinet (1) is equipped with a striking mechanism (2) on the inside right side. The striking mechanism (2) is used to prevent the durian pulp from freezing and sticking together during rapid freezing.

2. The rapid freezing and preservation device for durian pulp according to claim 1, characterized in that: The striking mechanism (2) includes a second motor (201), which is fixedly connected to the upper right side of the outer wall of the cabinet (1). The output end of the second motor (201) passes through the cabinet (1) and is fixedly connected to an eccentric wheel (202). The bottom right end of the eccentric wheel (202) is rotatably connected to a connecting rod (203). A sliding groove (204) is provided on the right side of the inner wall of the cabinet (1). A sliding rod (205) is slidably connected inside the sliding groove (204). The other end of the connecting rod (203) is rotatably connected to the sliding rod (205). Multiple striking rods (206) are fixedly connected to the left side of the sliding rod (205).

3. The device for quick freezing and preservation of durian flesh according to claim 1, characterized in that: The cabinet (1) is provided with a cabinet door (15) on the front side. The upper and lower sides of the left side of the front wall of the cabinet door (15) are fixedly connected with hinges (16). The cabinet door (15) is rotatably connected to the cabinet (1) through the hinges (16).

4. The device for quick freezing and preservation of durian flesh according to claim 3, characterized in that: An observation window (17) is provided in the middle of the front side of the cabinet door (15), and a window frame (18) is fixedly connected to the outside of the observation window (17).

5. The device for quick freezing and preservation of durian flesh according to claim 3, characterized in that: A locking ring (19) is fixedly connected to the right side of the front wall of the cabinet door (15), and a latch (20) is fixedly connected to the right side of the front wall of the cabinet body (1).

6. The device for quick freezing and preservation of durian flesh according to claim 1, characterized in that: The upper rear end of the cabinet (1) is connected to a conveying pipe (21), one end of which is fixedly connected to a spray head (22), and a liquid nitrogen tank (23) is provided on the left side of the cabinet (1). The other end of the conveying pipe (21) is fixedly connected to the liquid nitrogen tank (23).

7. The device for quick freezing and preservation of durian flesh according to claim 6, characterized in that: The liquid nitrogen tank (23) has fixing straps (24) on the upper and lower sides of its outer wall. The front and rear ends of the left side of the two fixing straps (24) are threaded with screws (25). Multiple screws (25) pass through the corresponding fixing straps (24) in sequence and are threaded to the cabinet (1).

8. The rapid freezing and preservation device for durian pulp according to claim 1, characterized in that: The inner wall front side of the cabinet (1) is fixedly connected with multiple fixing buckles (26), and the inner wall of the multiple fixing buckles (26) is fixedly connected with the same adhesive strip (27).

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