Automatic liquid nitrogen filling device and method
Through the design of the liquid nitrogen guide unit and the isolation unit, the injection and diffusion of liquid nitrogen are controlled, the waste and diffusion problems of the liquid nitrogen filling device are solved, and efficient liquid nitrogen utilization and low-cost production are achieved.
Patent Information
- Application Number
- CN202511169986.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2025-09-19
AI Technical Summary
When the existing automatic liquid nitrogen filling device is filled with liquid nitrogen, the liquid nitrogen is easily ejected and diffused, resulting in waste and impact on the factory environment, and increasing the cost of edible oil production.
Liquid nitrogen guide unit and isolation unit are used, and spiral airflow and air curtain forming device are used to control the spray direction and diffusion of liquid nitrogen, thereby reducing the waste of liquid nitrogen.
It effectively prevents liquid nitrogen from bursting out again in the edible oil barrel, reduces the loss and waste of liquid nitrogen, reduces the impact on the factory environment, and reduces production costs.
Smart Images
Figure CN120667635A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of liquid nitrogen filling machines, and in particular to an automatic liquid nitrogen filling device and method. Background Art
[0002] A liquid nitrogen filling machine is a device that accurately injects liquid nitrogen into packaging containers or other equipment. It is mainly used to quickly cool products and ensure uniform temperature reduction.
[0003] In the production and processing of edible oil, liquid nitrogen needs to be added to the filled edible oil barrels. During the addition of liquid nitrogen, an automatic liquid nitrogen filling device is required. When the existing automatic liquid nitrogen filling device is adding liquid nitrogen, a large amount of liquid nitrogen will burst out after entering the edible oil barrels, and then quickly spread inside the factory. In the long run, the addition of liquid nitrogen will consume a lot of money, which will increase the processing cost of edible oil. At the same time, a large amount of liquid nitrogen will spread inside the factory, which will have a long-term impact on the workers. To this end, we propose an automatic liquid nitrogen filling device and method.
[0004] Combining the above problems, we will find that it is difficult to avoid the above problems at the same time when using the existing automatic liquid nitrogen filling devices on the market, and even if they can be solved, they need to be solved with the help of external tools, which makes it impossible to achieve the desired effect. Therefore, we propose an automatic liquid nitrogen filling device and method. Summary of the Invention
[0005] The object of the present invention is to provide an automatic liquid nitrogen filling device and method to solve the problems raised in the above background technology.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic liquid nitrogen filling device, comprising a main body mechanism, the main body mechanism including a filling device body, a control box fixedly mounted on the top of the filling device body, a filling pipe fixedly connected to one side of the filling device body, a filling tank fixedly connected to one side of the filling device body via a connecting pipe, and an auxiliary filling mechanism provided on the surface of the filling pipe; The auxiliary filling mechanism includes a liquid nitrogen guide unit, which is arranged on the surface of the filling pipe and is used in conjunction with the filling pipe; The auxiliary filling mechanism further includes an isolation unit, which is arranged on the surface of the liquid nitrogen guide unit and is used in conjunction with the liquid nitrogen guide unit.
[0007] Preferably, the liquid nitrogen guide unit includes a guide shell, which is fixedly sleeved on the surface of the filling pipe, and a collection box is fixedly sleeved on the surface of the guide shell, a shell is fixedly installed on the top of the collection box, a bracket is fixedly installed on the inner wall of the shell, a high-speed motor is fixedly installed on one side of the bracket, and a fan blade is fixedly installed on the output end of the high-speed motor, one end of the shell is fixedly connected to a fixed pipe, one end of the fixed pipe is fixedly connected to the top of the collection box, and the other end of the shell is fixedly connected to a delivery pipe, one end of the delivery pipe is fixedly connected to the top of the guide shell, and an air suction head is fixedly installed on the bottom of the collection box, the air suction head is arranged obliquely, and there are several air suction heads, which are arranged in a circle at the bottom of the collection box.
[0008] Preferably, a spiral groove is provided on the inner wall of the guide shell, and the spiral groove is fixedly connected to the delivery pipe.
[0009] Preferably, a frame is fixedly mounted on the inner wall of the shell, and a switch plate is rotatably connected to the inner wall of the frame, and the number of the switch plates is two.
[0010] Preferably, a partition is fixedly mounted on the inner wall of the shell, one side of the partition is fixedly connected to the frame, and the partition is used to divide the interior of the shell into two flow channels.
[0011] Preferably, a transmission motor is fixedly mounted on the inner wall of the frame, a first gear is fixedly mounted on the output end of the transmission motor, a tooth plate is meshed on the surface of the first gear, there are two tooth plates, and the two tooth plates are arranged opposite to each other, a rotating rod is fixedly mounted on the top of the switch plate, a second gear is fixedly mounted on one end of the rotating rod, and the surface of the second gear is meshed with the surface of the tooth plate.
[0012] Preferably, a guide rod is fixedly mounted on one side of the tooth plate, a surface sliding sleeve of the guide rod is provided with a mounting sleeve, and the mounting sleeve is fixedly mounted on the inner wall of the frame.
[0013] Preferably, the isolation unit includes an air supply pipe, which is fixedly connected to one side of the shell, and the bottom of the air supply pipe is fixedly connected to a wind curtain forming box, which is fixedly sleeved on the surface of the collection box, and a wind curtain forming hole is opened at the bottom of the wind curtain forming box. The inner wall of the wind curtain forming box is fixedly installed with an air flow guide plate, and the cross-section of the air flow guide plate is conical.
[0014] Preferably, a connecting rod is fixedly installed on the bottom of the wind curtain forming box, and the number of the connecting rods is four. A wind flow guide ring is provided at the bottom of the wind curtain forming box, and the bottom of the wind flow guide ring is fixedly connected to one end of the connecting rod. The cross-section of the wind flow guide ring is V-shaped.
[0015] A method for automatically filling a liquid nitrogen device, the specific steps are as follows: S1: When the user needs to inject liquid nitrogen into the interior of the cooking oil barrel, the user uses the control box and the external power supply to start the filling device body. At this time, the filling device body absorbs liquid nitrogen from the filling tank, transports the liquid nitrogen to the position of the filling pipe, and then sprays it out of the filling pipe. In the process of spraying the liquid nitrogen out of the filling pipe, the user uses the external control switch and power supply to start the high-speed motor. The start of the high-speed motor drives the fan blades to rotate. The rotation of the fan blades drives the airflow to flow, and the airflow is transmitted through the shell to the delivery pipe, and then through the delivery pipe to the spiral groove inside the guide shell. The airflow is guided by the spiral groove to form a spiral airflow effect. When the liquid nitrogen is sprayed from the filling pipe into the interior of the guide shell, the effect of the spiral airflow causes the vaporized liquid nitrogen to be spirally sprayed out of the interior of the guide shell, and finally the liquid nitrogen enters the cooking oil barrel; S2: The filling device body sprays liquid nitrogen indirectly, so when the liquid nitrogen is about to enter the guide shell, the transmission motor is started by the control box and the external power supply. The start of the transmission motor drives the first gear to rotate, and the rotation of the first gear drives the two tooth plates to move, so that the two tooth plates move in relative directions. The movement of the two tooth plates drives the guide rod to move inside the mounting sleeve, and at the same time drives the two second gears to rotate. The rotation of the two second gears drives the rotating rod to rotate, and the rotation of the rotating rod drives the switch plate to rotate, so that the switch plate rotates ninety degrees, so that the airflow can enter the inner cavity of the conveying pipe through one of the channels inside the shell. When the liquid nitrogen stops spraying, the transmission motor reverses and closes the switch plate, so that the airflow cannot enter the interior of the spiral groove, thereby avoiding affecting subsequent operations, so that the liquid nitrogen can enter the interior of the edible oil barrel in a spiral downward state; S3: The liquid nitrogen sprayed into the edible oil barrel is pushed toward the barrel wall briefly by the rotating airflow, so that the liquid nitrogen adheres to the barrel wall, thereby preventing a large amount of liquid nitrogen sprayed into the edible oil barrel from being sprayed out of the edible oil barrel again. However, a small amount of liquid nitrogen will still be sprayed out of the edible oil barrel. During the high-speed rotation of the high-speed motor, the reverse rotation of the fan blades will suck the airflow into the shell. The suction force generated causes a small amount of sprayed liquid nitrogen to be sucked into the inner cavity of the collection box by the suction head, and then enters the inner cavity of the shell through the fixed pipe, so that the sucked liquid nitrogen enters the inner cavity of the spiral groove through the delivery pipe, and merges with the liquid nitrogen sprayed next time, and then enters the next edible oil barrel. Another part of the sucked liquid nitrogen will enter the inner cavity of the air delivery pipe; S4: During the continuous operation of the high-speed motor, the continuously flowing airflow and a portion of the inhaled liquid nitrogen will enter the inner cavity of the air curtain forming box through the air supply pipe. The airflow transported into the air curtain forming box by the air supply pipe will be evenly guided by the airflow guide plate, so that the airflow entering the air curtain forming box is evenly distributed into the air curtain forming holes, and then discharged through the air curtain forming holes. After being discharged through the air curtain forming holes, the airflow forms a wind curtain. After entering the interior of the airflow guide ring, the V-shaped configuration of the airflow guide ring can turn the airflow to flow toward the position of the corresponding suction head obliquely upward, thereby assisting in collecting the liquid nitrogen. The formed wind curtain can isolate the liquid nitrogen from the surrounding environment, so that the liquid nitrogen will not be dispersed over a large area, thereby reducing the waste of liquid nitrogen.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a liquid nitrogen guide unit to ensure that a large amount of liquid nitrogen will not burst out again after entering the edible oil barrel, thereby avoiding the phenomenon of large loss of liquid nitrogen in the production process of edible oil. At the same time, it can also prevent the long-term diffusion of a large amount of liquid nitrogen in the factory building from affecting the workers, reducing the loss and waste of liquid nitrogen and reducing the cost of the edible oil production process. 2. The present invention can form an air curtain by providing an isolation unit. After the air flow enters the interior of the air flow guide ring, the V-shaped configuration of the air flow guide ring can turn the air flow to flow obliquely upward to the position of the corresponding suction head, thereby assisting in collecting the liquid nitrogen. The formed air curtain can isolate the liquid nitrogen from the surrounding environment, prevent the liquid nitrogen from spreading over a large area, and reduce the waste of liquid nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the coordination of the liquid nitrogen guide unit and the isolation unit of the present invention; Figure 3 is a schematic diagram of the interior of the housing of the present invention; Figure 4 For the present invention Figure 3 A partial enlarged view of point A in the middle; Figure 5 Schematic diagram of the exploded view of the switch plate and frame of the present invention; Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle; Figure 7 Schematic diagram of the distribution of the suction head of the present invention; Figure 8 Schematic diagram of the airflow guide plate of the present invention; Figure 9 Schematic diagram of the spiral groove of the present invention.
[0018] In the figure: 1. Main body; 11. Filling device body; 12. Filling pipe; 13. Filling tank; 14. Control box; 2. Auxiliary filling mechanism; 21. Liquid nitrogen guide unit; 2101. Guide shell; 2102. Delivery pipe; 2103. Shell; 2104. Collection box; 2105. Suction head; 2106. Fixing pipe; 2107. Bracket; 2108. High-speed motor; 2109. Fan blade; 2110. Partition; 2111. Frame Frame; 2112, switch plate; 2113, transmission motor; 2114, first gear; 2115, gear plate; 2116, second gear; 2117, rotating rod; 2118, guide rod; 2119, mounting sleeve; 2120, spiral groove; 22, isolation unit; 2201, air flow guide ring; 2202, air supply pipe; 2203, connecting rod; 2204, air curtain forming box; 2205, air curtain forming hole; 2206, air flow guide plate. DETAILED DESCRIPTION
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] Example 1: Please refer to Figures 1-9 , Example 1: Please refer to Figures 1-9 The present invention provides a technical solution: an automatic liquid nitrogen filling device, comprising a main body 1, the main body 1 comprising a filling device body 11, a control box 14 fixedly mounted on the top of the filling device body 11, a filling pipe 12 fixedly connected to one side of the filling device body 11, a filling tank 13 fixedly connected to one side of the filling device body 11 via a connecting pipe, and an auxiliary filling mechanism 2 provided on the surface of the filling pipe 12; The auxiliary filling mechanism 2 includes a liquid nitrogen guide unit 21 . The liquid nitrogen guide unit 21 is disposed on the surface of the filling pipe 12 . The liquid nitrogen guide unit 21 is used in conjunction with the filling pipe 12 .
[0021] As a further limitation of the auxiliary filling mechanism 2 of the present invention, the liquid nitrogen guide unit 21 includes a guide shell 2101, which is fixedly sleeved on the surface of the filling pipe 12, and a collection box 2104 is fixedly sleeved on the surface of the guide shell 2101. The top of the collection box 2104 is fixedly installed with a shell 2103, and the inner wall of the shell 2103 is fixedly installed with a bracket 2107. A high-speed motor 2108 is fixedly installed on one side of the bracket 2107, and a fan blade 2109 is fixedly installed on the output end of the high-speed motor 2108. One end of the shell 2103 is fixedly connected to a fixed pipe 2106, and one end of the fixed pipe 2106 is fixedly connected to the top of the collection box 2104, and the other end of the shell 2103 is fixedly connected to the output The delivery pipe 2102 has one end fixedly connected to the top of the guide shell 2101. An air suction head 2105 is fixedly installed at the bottom of the collection box 2104. The air suction head 2105 is arranged obliquely. There are several air suction heads 2105, which are arranged in a circle at the bottom of the collection box 2104. By providing the liquid nitrogen guide unit 21, it is possible to ensure that a large amount of liquid nitrogen will not burst out again after entering the edible oil barrel, thereby avoiding the phenomenon of large loss of liquid nitrogen in the production process of edible oil. At the same time, it can also avoid the long-term diffusion of a large amount of liquid nitrogen in the factory building to affect the staff, thereby reducing the loss and waste of liquid nitrogen and reducing the cost in the production process of edible oil. The inner wall of the guide shell 2101 is provided with a spiral groove 2120, which is fixedly connected to the delivery pipe 2102; A frame 2111 is fixedly mounted on the inner wall of the housing 2103. A switch plate 2112 is rotatably connected to the inner wall of the frame 2111. There are two switch plates 2112. A partition 2110 is fixedly mounted on the inner wall of the housing 2103. One side of the partition 2110 is fixedly connected to the frame 2111. The partition 2110 is used to divide the interior of the housing 2103 into two flow channels. A transmission motor 2113 is fixedly mounted on the inner wall of the frame 2111. A first gear 2114 is fixedly mounted on the output end of the transmission motor 2113. A toothed plate 2115 meshes with the surface of the first gear 2114. Two toothed plates 2115 are arranged opposite each other. A rotating rod 2117 is fixedly mounted on the top of the switch plate 2112. A second gear 2116 is fixedly mounted on one end of the rotating rod 2117. The surface of the second gear 2116 meshes with the surface of the toothed plate 2115. A guide rod 2118 is fixedly mounted on one side of the tooth plate 2115 . A mounting sleeve 2119 is slidingly mounted on the surface of the guide rod 2118 . The mounting sleeve 2119 is fixedly mounted on the inner wall of the frame 2111 .
[0022] The specific implementation of this embodiment is as follows: when the user needs to inject liquid nitrogen into the interior of the cooking oil barrel, the user uses the control box 14 and the external power supply to start the filling device body 11. At this time, the filling device body 11 absorbs liquid nitrogen from the filling tank 13, transports the liquid nitrogen to the position of the filling pipe 12, and then sprays it out of the filling pipe 12. In the process of spraying the liquid nitrogen out of the filling pipe 12, the user uses the external control switch and power supply to start the high-speed motor 2108. The start of the high-speed motor 2108 drives the fan blades 2109 to rotate. The rotation of the fan blades 2109 drives the air flow to flow, and the air flow is transmitted through the shell 2103 to the delivery pipe 2102, and then transmitted through the delivery pipe 2102 to the spiral groove 21 inside the guide shell 2101. 20, the air flow is guided by the spiral groove 2120 to form a spiral air flow effect. When the liquid nitrogen is sprayed from the filling pipe 12 to the inside of the guide shell 2101, the gasified liquid nitrogen can also be spirally sprayed out of the guide shell 2101 through the effect of the spiral airflow. Finally, the liquid nitrogen enters the edible oil barrel. The filling device body 11 is indirectly sprayed when spraying liquid nitrogen. Therefore, when the liquid nitrogen is about to enter the inside of the guide shell 2101, the transmission motor 2113 is started by the control box 14 and the external power supply. The start of the transmission motor 2113 drives the first gear 2114 to rotate. The rotation of the first gear 2114 drives the two tooth plates 2115 to move, so that the two tooth plates 2115 move in relative directions. The movement of the tooth plate 2115 drives the guide rod 2118 to move inside the mounting sleeve 2119, and at the same time drives the two second gears 2116 to rotate. The rotation of the two second gears 2116 drives the rotating rod 2117 to rotate. The rotation of the rotating rod 2117 drives the switch plate 2112 to rotate. When the switch plate 2112 rotates ninety degrees, the air flow can enter the inner cavity of the delivery pipe 2102 through one of the channels inside the shell 2103. When the liquid nitrogen stops spraying, the transmission motor 2113 is reversed to close the switch plate 2112, so that the air flow cannot enter the interior of the spiral groove 2120, avoiding affecting the subsequent operations, so that the liquid nitrogen can enter the interior of the edible oil barrel in a spiral downward state and be sprayed into The liquid nitrogen inside the edible oil barrel is pushed toward the barrel wall briefly by the rotating airflow, so that the liquid nitrogen adheres to the barrel wall, thereby preventing a large amount of liquid nitrogen sprayed into the edible oil barrel from being sprayed out of the edible oil barrel again. However, a small amount of liquid nitrogen will still be sprayed out of the edible oil barrel. During the high-speed rotation of the high-speed motor 2108, the reverse rotation of the fan blades 2109 will suck the airflow into the shell 2103. The suction force generated makes the small amount of sprayed liquid nitrogen sucked into the inner cavity of the collection box 2104 by the suction head 2105, and then enters the inner cavity of the shell 2103 through the fixed tube 2106, so that the sucked liquid nitrogen enters the inner cavity of the spiral groove 2120 through the delivery pipe 2102, and merges with the liquid nitrogen sprayed next time again, and then enters the next edible oil barrel.A portion of the inhaled liquid nitrogen will enter the inner cavity of the gas pipe 2202, ensuring that a large amount of liquid nitrogen will not burst out again after entering the edible oil barrel, thereby avoiding the phenomenon of large loss of liquid nitrogen during the edible oil production process. It can also prevent the long-term diffusion of large amounts of liquid nitrogen in the factory and the impact on workers, reducing the loss and waste of liquid nitrogen and the cost of the edible oil production process.
[0023] Example 2: Please refer to Figures 1-9 The present invention provides a technical solution: an automatic liquid nitrogen filling device. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.
[0024] As a further limitation of the auxiliary filling mechanism 2 of the present invention, the auxiliary filling mechanism 2 further includes an isolation unit 22, which is disposed on the surface of the liquid nitrogen guide unit 21, and the isolation unit 22 is used in conjunction with the liquid nitrogen guide unit 21; The isolation unit 22 includes an air supply pipe 2202, which is fixedly connected to one side of the shell 2103. The bottom of the air supply pipe 2202 is fixedly connected to an air curtain forming box 2204, which is fixedly sleeved on the surface of the collecting box 2104. The bottom of the air curtain forming box 2204 is provided with an air curtain forming hole 2205. The inner wall of the air curtain forming box 2204 is fixedly installed with an air flow guide plate 2206. The cross section of the air flow guide plate 2206 is conical. By providing the isolation unit 22, the air flow can form an air curtain. After entering the interior of the air flow guide ring 2201, the air flow is turned by the V-shaped setting of the air flow guide ring 2201 to flow toward the position of the corresponding suction head 2105 obliquely upward, thereby assisting in collecting the liquid nitrogen. The formed air curtain can isolate the liquid nitrogen from the surrounding environment, prevent the liquid nitrogen from being dispersed over a large area, and reduce the waste of liquid nitrogen. A connecting rod 2203 is fixedly installed at the bottom of the wind curtain forming box 2204, and there are four connecting rods 2203. A wind flow guide ring 2201 is provided at the bottom of the wind curtain forming box 2204. The bottom of the wind flow guide ring 2201 is fixedly connected to one end of the connecting rod 2203, and the cross-section of the wind flow guide ring 2201 is V-shaped.
[0025] The specific implementation of this embodiment is as follows: during the continuous operation of the high-speed motor 2108, the continuously flowing airflow and a portion of the inhaled liquid nitrogen will enter the inner cavity of the air curtain forming box 2204 through the air supply pipe 2202, and the airflow transported from the air supply pipe 2202 to the inside of the air curtain forming box 2204 will be evenly guided by the air flow guide plate 2206, so that the airflow entering the air curtain forming box 2204 is evenly distributed into the air curtain forming hole 2205, and then discharged through the air curtain forming hole 2205. After being discharged through the air curtain forming hole 2205, the airflow forms an air curtain. After entering the interior of the airflow guide ring 2201, the V-shaped configuration of the airflow guide ring 2201 can turn the airflow to flow toward the position of the corresponding suction head 2105 obliquely upward, thereby assisting in collecting the liquid nitrogen. The formed air curtain can isolate the liquid nitrogen from the surrounding environment, prevent the liquid nitrogen from being dispersed over a large area, and reduce the waste of liquid nitrogen.
[0026] A method for automatically filling a liquid nitrogen device, the specific steps are as follows: S1: When the user needs to inject liquid nitrogen into the cooking oil barrel, the user uses the control box 14 and the external power supply to start the filling device body 11. At this time, the filling device body 11 absorbs liquid nitrogen from the filling tank 13, transports the liquid nitrogen to the position of the filling pipe 12, and then sprays it out of the filling pipe 12. In the process of spraying the liquid nitrogen out of the filling pipe 12, the user uses the external control switch and power supply to start the high-speed motor 2108. The start of the high-speed motor 2108 drives the fan blades 2109 to rotate, and the fan blades 2109 are rotated. The rotation of 09 drives the airflow to flow, and transmits the airflow through the shell 2103 to the delivery pipe 2102, and then transmits it to the spiral groove 2120 inside the guide shell 2101 through the delivery pipe 2102. The airflow is guided by the spiral groove 2120 to form a spiral airflow effect. When liquid nitrogen is sprayed from the filling pipe 12 into the guide shell 2101, the spiral airflow effect causes the vaporized liquid nitrogen to be ejected from the guide shell 2101 in a spiral shape, and finally the liquid nitrogen enters the edible oil barrel. S2: The filling device body 11 is an indirect sprayer when spraying liquid nitrogen. Therefore, when the liquid nitrogen is about to enter the guide shell 2101, the transmission motor 2113 is started by the control box 14 and the external power supply. The start of the transmission motor 2113 drives the first gear 2114 to rotate. The rotation of the first gear 2114 drives the two tooth plates 2115 to move, so that the two tooth plates 2115 move in relative directions. The movement of the two tooth plates 2115 drives the guide rod 2118 to move inside the mounting sleeve 2119, and at the same time drives the two second gears 2116 to move. The rotation of the two second gears 2116 drives the rotating rod 2117 to rotate, and the rotation of the rotating rod 2117 drives the switch plate 2112 to rotate, so that the switch plate 2112 rotates ninety degrees, so that the air flow can enter the inner cavity of the delivery pipe 2102 through one of the channels inside the housing 2103. When the liquid nitrogen stops spraying, the transmission motor 2113 reverses to close the switch plate 2112, so that the air flow cannot enter the interior of the spiral groove 2120, avoiding affecting subsequent operations, thereby allowing the liquid nitrogen to spiral downward and enter the interior of the edible oil barrel; S3: The liquid nitrogen sprayed into the edible oil barrel is pushed toward the barrel wall briefly by the rotating airflow, so that the liquid nitrogen adheres to the barrel wall, thereby preventing a large amount of liquid nitrogen sprayed into the edible oil barrel from being sprayed out of the edible oil barrel again. However, a small amount of liquid nitrogen will still be sprayed out of the edible oil barrel. During the high-speed rotation of the high-speed motor 2108, the reverse rotation of the fan blades 2109 will suck the airflow into the shell 2103. The suction force generated causes a small amount of sprayed liquid nitrogen to be sucked into the inner cavity of the collection box 2104 by the suction head 2105, and then enter the inner cavity of the shell 2103 through the fixed tube 2106. The sucked liquid nitrogen enters the inner cavity of the spiral groove 2120 through the delivery pipe 2102, and merges with the liquid nitrogen sprayed next time, and then enters the next edible oil barrel. Another part of the sucked liquid nitrogen will enter the inner cavity of the gas delivery pipe 2202. S4: During the continuous operation of the high-speed motor 2108, the continuously flowing airflow and a portion of the inhaled liquid nitrogen will enter the inner cavity of the wind curtain forming box 2204 through the air supply pipe 2202, and the airflow transported from the air supply pipe 2202 to the inside of the wind curtain forming box 2204 will be evenly guided by the air flow guide plate 2206, so that the airflow entering the wind curtain forming box 2204 is evenly distributed into the wind curtain forming hole 2205, and then discharged through the wind curtain forming hole 2205. After being discharged through the wind curtain forming hole 2205, the airflow forms a wind curtain. After entering the interior of the wind flow guide ring 2201, the V-shaped configuration of the wind flow guide ring 2201 can turn the airflow to flow toward the position of the corresponding suction head 2105 obliquely upward, thereby assisting in collecting the liquid nitrogen. The formed wind curtain can isolate the liquid nitrogen from the surrounding environment, so that the liquid nitrogen will not be dispersed over a large area, thereby reducing the waste of liquid nitrogen.
[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. An automatic liquid nitrogen filling device, comprising a main body (1), characterized in that: The main mechanism (1) comprises a filling device body (11), a control box (14) is fixedly mounted on the top of the filling device body (11), a filling pipe (12) is fixedly connected to one side of the filling device body (11), a filling tank (13) is fixedly connected to one side of the filling device body (11) via a connecting pipe, and an auxiliary filling mechanism (2) is provided on the surface of the filling pipe (12); The auxiliary filling mechanism (2) comprises a liquid nitrogen guide unit (21), the liquid nitrogen guide unit (21) is arranged on the surface of the filling pipe (12), and the liquid nitrogen guide unit (21) is used in conjunction with the filling pipe (12); The auxiliary filling mechanism (2) further comprises an isolation unit (22), wherein the isolation unit (22) is arranged on the surface of the liquid nitrogen guide unit (21), and the isolation unit (22) is used in conjunction with the liquid nitrogen guide unit (21).
2. The automatic liquid nitrogen filling device according to claim 1, characterized in that: The liquid nitrogen guide unit (21) comprises a guide shell (2101), the guide shell (2101) is fixedly sleeved on the surface of the filling pipe (12), a collection box (2104) is fixedly sleeved on the surface of the guide shell (2101), a shell (2103) is fixedly mounted on the top of the collection box (2104), a bracket (2107) is fixedly mounted on the inner wall of the shell (2103), a high-speed motor (2108) is fixedly mounted on one side of the bracket (2107), a fan blade (2109) is fixedly mounted on the output end of the high-speed motor (2108), and the shell (2103) is fixedly mounted on the inner wall of the shell (2103). One end of the housing (2103) is fixedly connected to a fixed tube (2106), one end of the fixed tube (2106) is fixedly connected to the top of the collection box (2104), the other end of the housing (2103) is fixedly connected to a delivery tube (2102), one end of the delivery tube (2102) is fixedly connected to the top of the guide shell (2101), and an air suction head (2105) is fixedly installed at the bottom of the collection box (2104), the air suction head (2105) is inclined, and there are several air suction heads (2105) arranged in a circle at the bottom of the collection box (2104).
3. The automatic liquid nitrogen filling device according to claim 2, characterized in that: The inner wall of the guide shell (2101) is provided with a spiral groove (2120), and the spiral groove (2120) is fixedly connected to the delivery pipe (2102).
4. The automatic liquid nitrogen filling device according to claim 2, characterized in that: A frame (2111) is fixedly mounted on the inner wall of the housing (2103), and a switch plate (2112) is rotatably connected to the inner wall of the frame (2111), and the number of the switch plates (2112) is two.
5. The automatic liquid nitrogen filling device according to claim 4, characterized in that: A partition (2110) is fixedly mounted on the inner wall of the shell (2103), one side of the partition (2110) is fixedly connected to the frame (2111), and the partition (2110) is used to divide the interior of the shell (2103) into two flow channels.
6. The automatic liquid nitrogen filling device according to claim 4, characterized in that: A transmission motor (2113) is fixedly mounted on the inner wall of the frame (2111), a first gear (2114) is fixedly mounted on the output end of the transmission motor (2113), a toothed plate (2115) is meshed on the surface of the first gear (2114), two toothed plates (2115) are provided, and the two toothed plates (2115) are arranged opposite to each other, a rotating rod (2117) is fixedly mounted on the top of the switch plate (2112), a second gear (2116) is fixedly mounted on one end of the rotating rod (2117), and the surface of the second gear (2116) is meshed with the surface of the toothed plate (2115).
7. The automatic liquid nitrogen filling device according to claim 6, characterized in that: A guide rod (2118) is fixedly mounted on one side of the tooth plate (2115), and a surface sliding sleeve of the guide rod (2118) is provided with a mounting sleeve (2119), and the mounting sleeve (2119) is fixedly mounted on the inner wall of the frame (2111).
8. The automatic liquid nitrogen filling device according to claim 2, characterized in that: The isolation unit (22) includes an air supply pipe (2202), the air supply pipe (2202) is fixedly connected to one side of the shell (2103), the bottom of the air supply pipe (2202) is fixedly connected to a wind curtain forming box (2204), the wind curtain forming box (2204) is fixedly sleeved on the surface of the collection box (2104), the bottom of the wind curtain forming box (2204) is provided with a wind curtain forming hole (2205), and the inner wall of the wind curtain forming box (2204) is fixedly installed with an air flow guide plate (2206), and the cross section of the air flow guide plate (2206) is conical.
9. The automatic liquid nitrogen filling device according to claim 8, characterized in that: A connecting rod (2203) is fixedly installed at the bottom of the wind curtain forming box (2204), and the number of the connecting rods (2203) is four. An airflow guide ring (2201) is provided at the bottom of the wind curtain forming box (2204), and the bottom of the airflow guide ring (2201) is fixedly connected to one end of the connecting rod (2203), and the cross-section of the airflow guide ring (2201) is V-shaped.
10. The method of an automatic liquid nitrogen filling device according to any one of claims 1 to 10, characterized in that: The specific steps are as follows: S1: When the user needs to inject liquid nitrogen into the interior of the cooking oil barrel, the user uses the control box (14) and the external power supply to start the filling device body (11). At this time, the filling device body (11) absorbs liquid nitrogen from the filling tank (13), transports the liquid nitrogen to the position of the filling pipe (12), and then sprays it out of the filling pipe (12). In the process of spraying the liquid nitrogen out of the filling pipe (12), the user uses the external control switch and power supply to start the high-speed motor (2108). The start of the high-speed motor (2108) drives the fan blades (2109) to rotate, and the fan blades (2109) The rotation of the housing (109) drives the airflow to flow, and transmits the airflow through the housing (2103) to the delivery pipe (2102), and then transmits the airflow through the delivery pipe (2102) to the spiral groove (2120) inside the guide shell (2101). The airflow is guided by the spiral groove (2120) to form a spiral airflow effect. When liquid nitrogen is sprayed from the filling pipe (12) to the inside of the guide shell (2101), the gasified liquid nitrogen can also be in a spiral shape when it is sprayed out of the inside of the guide shell (2101) due to the effect of the spiral airflow, and finally the liquid nitrogen enters the edible oil barrel; S2: The filling device body (11) is indirectly sprayed when spraying liquid nitrogen. Therefore, when the liquid nitrogen is about to enter the guide shell (2101), the transmission motor (2113) is started by the control box (14) and the external power supply. The start of the transmission motor (2113) drives the first gear (2114) to rotate. The rotation of the first gear (2114) drives the two tooth plates (2115) to move, so that the two tooth plates (2115) move in relative directions. The movement of the two tooth plates (2115) drives the guide rod (2118) to move inside the mounting sleeve (2119), and at the same time drives the two second gears (211 6) rotates, the rotation of the two second gears (2116) drives the rotating rod (2117) to rotate, and the rotation of the rotating rod (2117) drives the switch plate (2112) to rotate, so that the switch plate (2112) rotates ninety degrees, so that the airflow can enter the inner cavity of the delivery pipe (2102) through one of the channels inside the shell (2103); when the liquid nitrogen stops spraying, the transmission motor (2113) reverses and closes the switch plate (2112), so that the airflow cannot enter the interior of the spiral groove (2120), thereby avoiding affecting subsequent operations, and thus allowing the liquid nitrogen to enter the interior of the edible oil barrel in a spiral downward state; S3: The liquid nitrogen sprayed into the edible oil barrel is pushed toward the barrel wall by the rotating airflow for a short time, so that the liquid nitrogen adheres to the barrel wall, thereby preventing the large amount of liquid nitrogen sprayed into the edible oil barrel from being sprayed out of the edible oil barrel again. However, a small amount of liquid nitrogen will still be sprayed out of the edible oil barrel. During the high-speed rotation of the high-speed motor (2108), the reverse rotation of the fan blade (2109) will suck the airflow into the shell (2103). The suction force generated causes the small amount of sprayed liquid nitrogen to be sucked into the inner cavity of the collection box (2104) by the suction head (2105), and then enter the inner cavity of the shell (2103) through the fixed tube (2106). The sucked liquid nitrogen enters the inner cavity of the spiral groove (2120) through the delivery pipe (2102), and merges with the liquid nitrogen sprayed next time, and then enters the next edible oil barrel. Another part of the sucked liquid nitrogen will enter the inner cavity of the gas delivery pipe (2202); S4: During the continuous operation of the high-speed motor (2108), the continuously flowing airflow and a portion of the inhaled liquid nitrogen will enter the inner cavity of the wind curtain forming box (2204) through the air supply pipe (2202), and the airflow delivered from the air supply pipe (2202) into the wind curtain forming box (2204) will be evenly guided by the airflow guide plate (2206), so that the airflow entering the wind curtain forming box (2204) is evenly distributed in the wind curtain forming hole (2205), and then The liquid nitrogen is then discharged through the wind curtain forming hole (2205). After being discharged through the wind curtain forming hole (2205), the airflow forms a wind curtain. After the airflow enters the interior of the wind flow guide ring (2201), the airflow is turned to flow toward the position of the corresponding suction head (2105) obliquely upward through the V-shaped setting of the wind flow guide ring (2201), thereby assisting in collecting the liquid nitrogen. The formed wind curtain can isolate the liquid nitrogen from the surrounding environment, so that the liquid nitrogen will not be dispersed over a large area, thereby reducing the waste of liquid nitrogen.