Self-service liquid taking device for low-temperature liquid

Abstract

The embodiment of the invention provides a self-service liquid taking device for low-temperature liquid, and relates to the technical field of self-service liquid taking. The self-help low-temperature liquid taking device comprises a liquid storage tank, a control box is arranged on one side of the liquid storage tank, a valve is arranged on a liquid outlet pipe, a flow meter is installed in the control box, a liquid taking mechanism is arranged on the control box, and a leakage-proof mechanism is arranged on one side of the upper end of the liquid taking mechanism. According to the device, the leakage-proof mechanism is arranged to be matched with the liquid taking mechanism, so that the valve cannot be opened when the box door is not opened, the safety of the whole liquid taking process is greatly improved, the possible leakage risk of low-temperature liquid in a non-liquid taking state is effectively avoided, and after liquid taking, the valve is ensured to be closed; liquid leakage caused by incomplete closing of the valve is prevented, potential safety hazards and resource waste are reduced, and stable operation and reliable use of the low-temperature liquid self-service liquid taking device are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of self-service liquid dispensing, and in particular to a low-temperature liquid self-service dispensing device. Background Art

[0002] Cryogenic liquids refer to substances with boiling points below room temperature that need to remain in a liquid state in a low-temperature environment. Common examples include liquid nitrogen, liquid oxygen, liquid argon, etc. These cryogenic liquids are widely used in industrial production, scientific research experiments, medical treatment and other fields. For example, in industry, they are used for cooling metal processing and quick freezing and preservation of food. In scientific research, they provide a low-temperature environment for superconducting experiments and material research. In the medical field, they are used for vaccine storage and cryotherapy.

[0003] The low-temperature liquid self-service dispensing device is a device used for self-service acquisition of low-temperature liquids. It realizes self-service filling of low-temperature liquids through operation processes such as swiping cards and scanning codes, and has functions such as precise control and safety protection.

[0004] The existing low-temperature liquid self-service liquid dispensing device has the following problems: 1. Insufficient leak-proof performance: After the liquid is taken, there may be a problem of liquid leakage due to improper operation of the sampling personnel, resulting in the valve not being closed tightly. This will not only cause a waste of resources, but may also cause safety accidents and affect the stable operation of the device.

[0005] 2. Easy to contact low-temperature components: There is no effective isolation protection for low-temperature components. Operators are likely to directly contact low-temperature components during operation and are at risk of frostbite. Summary of the invention

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a low-temperature liquid self-service liquid dispensing device, which can realize safe and efficient self-service liquid dispensing of low-temperature liquid, prevent liquid leakage caused by the valve not being completely closed, and effectively solve the problems of insufficient leakage prevention performance of the prior art and the risk of frostbite in the liquid dispensing operation.

[0007] This application is implemented as follows: The present application provides a low-temperature liquid self-service liquid collection device, comprising: a liquid storage tank, a control box is arranged on one side of the liquid storage tank, the control box and the liquid storage tank are arranged inside a protective door, the protective door is provided with a password lock, a liquid outlet pipe is arranged through the inside of the control box, a valve is arranged on the liquid outlet pipe, a flow meter is installed inside the control box, a liquid collection mechanism is arranged on the control box, and a leak-proof mechanism is arranged on one side of the upper end of the liquid collection mechanism.

[0008] According to the low-temperature liquid self-service liquid collection device of the embodiment of the present application, one end of the liquid outlet pipe is connected to the bottom of the liquid storage tank through a first quick connector, and the other end is provided with a second quick connector, and the valve is installed inside the control box.

[0009] According to the low-temperature liquid self-service dispensing device of the embodiment of the present application, the control box includes a box body, the box body is hinged with a box door, and the box door is provided with a display screen.

[0010] According to the low-temperature liquid self-service liquid collection device of the embodiment of the present application, the liquid collection mechanism includes an isolation sleeve, the isolation sleeve is mounted on the valve handle, a first gear is provided at the bottom of the isolation sleeve, the first gear is rotatably mounted on a fixed frame, and the fixed frame is fixedly mounted on the inner wall of the box body.

[0011] According to the low-temperature liquid self-service liquid collection device of the embodiment of the present application, a first guide rail is fixedly connected to the inner wall of the bottom of the box body, a first rack is slidably connected in the first guide rail, the first rack is meshed with the first gear, and a moving component is connected to the bottom of the first rack.

[0012] According to the low-temperature liquid self-service liquid collection device of the embodiment of the present application, the moving component includes a bottom box, the bottom box is fixedly connected to the lower surface of the box body, a screw is rotatably connected inside the bottom box, and a handle is fixedly connected to one end of the screw.

[0013] According to the low-temperature liquid self-service liquid collection device of the embodiment of the present application, a movable block is threadedly connected to the screw rod, the movable block is slidably connected to the inner wall of the bottom box, and the movable block is fixedly connected to the lower surface of the first rack.

[0014] According to the low-temperature liquid self-service liquid collection device of the embodiment of the present application, the leakage prevention mechanism includes a fixed plate, the fixed plate is fixedly connected to the inner wall of the box body, a baffle and a second gear are rotatably connected to the fixed plate, the baffle abuts against one side of the isolation sleeve, a third gear is fixedly connected to the middle of the baffle, and the third gear is meshingly connected to the second gear.

[0015] According to the low-temperature liquid self-service liquid collection device of the embodiment of the present application, a second rack is meshedly connected to one side of the second gear, the second rack is slidably connected in the second guide rail, the second guide rail is fixedly connected to the inner wall of the box body, and one end of the second rack is fixedly connected to a spring and a telescopic rod, and the spring is sleeved on the telescopic rod.

[0016] According to the low-temperature liquid self-service liquid collection device of the embodiment of the present application, the end of the second rack away from the spring is fixedly connected to a connecting plate, one side of the connecting plate is abutted against a roller, the roller is rotatably installed in a push rod, one end of the push rod is inserted into the connecting plate, and the other end is fixedly connected to the box door.

[0017] Beneficial effects of the present invention: 1. The present invention converts manual rotation operation into precise control of the valve through gear rack transmission and screw mechanism, and uses the principle of mechanical gain to reduce the torque required for operation. It is particularly suitable for the possible opening and closing resistance of the valve in a low-temperature environment. By arranging an isolation sleeve to wrap the valve handle, direct contact with low-temperature components is avoided. The handle provides clear operation feedback. The user can grasp the filling progress in real time through the flow meter to avoid excessive liquid extraction. Combined with isolation design and user guidance, safe and efficient self-service liquid extraction of low-temperature liquids is achieved.

[0018] 2. The present invention cooperates with the liquid taking mechanism by arranging a leak-proof mechanism. On the one hand, before opening the box door, the push rod abuts against the connecting plate, so that the baffle is tightly against the isolation sleeve, thereby ensuring that the valve cannot be opened when the box door is not opened, greatly improving the safety of the entire liquid taking process, and effectively avoiding the risk of leakage of cryogenic liquid in the non-liquid taking state. On the other hand, after taking the liquid, closing the box door can make the push rod abut against the connecting plate again. Through a series of transmissions, the valve is guaranteed to be tightly closed to prevent liquid leakage caused by incomplete closure of the valve, reduce potential safety hazards and waste of resources, and ensure the stable operation and reliable use of the low-temperature liquid self-service liquid taking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 is a three-dimensional schematic diagram of the overall structure according to an embodiment of the present application; Figure 2 It is a schematic diagram of the three-dimensional structure of the liquid storage tank and the control box according to an embodiment of the present application; Figure 3 It is a second schematic diagram of the three-dimensional structure of the liquid storage tank and the control box according to an embodiment of the present application; Figure 4 is a schematic diagram of the three-dimensional structure of the control box part according to an embodiment of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of the liquid outlet pipe and the valve part according to an embodiment of the present application; Figure 6 is a schematic diagram of the three-dimensional structure inside the control box according to an embodiment of the present application; Figure 7 is a schematic diagram of the three-dimensional structure of the liquid extraction mechanism according to an embodiment of the present application; Figure 8is a schematic diagram of the three-dimensional structure of a mobile assembly according to an embodiment of the present application; Fig. 9 This is a schematic diagram of a partial cross-sectional three-dimensional structure of a control box according to an embodiment of the present application; Fig.10 This is the second schematic diagram of the partial cross-sectional three-dimensional structure of the control box according to the embodiment of the present application.

[0021] In the figure: 1. Protective door; 11. Password lock; 2. Liquid extraction mechanism; 21. First rack; 22. Moving assembly; 221. Bottom box; 222. Handle; 223. Screw; 224. Movable block; 23. Isolation sleeve; 231. First gear; 24. Fixed frame; 25. First guide rail; 3. Control box; 31. Box body; 32. Box door; 33. Display screen; 4. Liquid storage tank; 5. Liquid outlet pipe; 51. First quick connector; 52. Second quick connector; 53. Valve; 6. Leakage prevention mechanism; 61. Fixed plate; 62. Baffle; 63. Third gear; 64. Second gear; 65. Second guide rail; 66. Second rack; 67. Spring; 68. Telescopic rod; 69. Connecting plate; 610. Push rod; 611. Roller; 7. Flow meter. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0023] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] like Figure 1-Figure 10 As shown, a low-temperature liquid self-service liquid collection device according to an embodiment of the present application includes a liquid storage tank 4, a control box 3 is arranged on one side of the liquid storage tank 4, the control box 3 and the liquid storage tank 4 are arranged inside a protective door 1, and a password lock 11 is arranged on the protective door 1. A liquid outlet pipe 5 is arranged through the control box 3, and a valve 53 is arranged on the liquid outlet pipe 5. A flow meter 7 is installed inside the control box 3, and a liquid collection mechanism 2 is arranged on the control box 3, and a leak-proof mechanism 6 is arranged on one side of the upper end of the liquid collection mechanism 2.

[0025] One end of the liquid outlet pipe 5 is connected to the bottom of the liquid storage tank 4 through a first quick connector 51 , and the other end is provided with a second quick connector 52 . The valve 53 is installed inside the control box 3 .

[0026] The control box 3 includes a box body 31 , a box door 32 is hingedly connected to the box body 31 , and a display screen 33 is arranged on the box door 32 .

[0027] The specific self-service liquid collection process is as follows: 1. Swipe the card to open the door. Swipe the card or enter the password to open the protective door 1; 2. Scan the QR code to unlock. Scan the QR code on the display screen 33 to open the door 32; 3. Self-service filling: a guide sticker is affixed inside the box 31. Fill according to the recommended filling kilograms of the corresponding tank, and open the valve 53 to fill; 4. After closing the valve, observe the flow meter 7 data and close it when the recommended filling number is reached; 5. Lock and close the door, and close the box door 32 and the protective door 1.

[0028] The liquid taking mechanism 2 includes an isolation sleeve 23, which is sleeved on the handle of the valve 53. A first gear 231 is provided at the bottom of the isolation sleeve 23. The first gear 231 is rotatably mounted on the fixing frame 24, and the fixing frame 24 is fixedly mounted on the inner wall of the box body 31. A first guide rail 25 is fixedly connected to the bottom inner wall of the box body 31. A first rack 21 is slidably connected in the first guide rail 25. The first rack 21 is meshed and connected with the first gear 231. A moving component 22 is connected to the bottom of the first rack 21. The moving component 22 includes a bottom box 221, which is fixedly connected to the lower surface of the box body 31. A screw 223 is rotatably connected inside the bottom box 221, and one end of the screw 223 is fixedly connected to the handle 222. A movable block 224 is threadedly connected to the screw 223. The movable block 224 is slidably connected to the inner wall of the bottom box 221, and the movable block 224 is fixedly connected to the lower surface of the first rack 21.

[0029] The liquid taking mechanism 2 realizes the precise opening and closing and flow control of the valve 53 through the synergistic effect of the gear rack transmission and the screw 223 drive. Specifically, the user rotates the handle 222 to drive the screw 223 to rotate. The threaded cooperation of the screw 223 and the movable block 224 converts the rotational motion into linear motion, pushing the movable block 224 to slide along the inner wall of the bottom box 221. The movable block 224 is fixedly connected to the first rack 21, and the first rack 21 moves horizontally in the first guide rail 25, driving the first gear 231 meshing therewith to rotate. The first gear 231 is fixedly connected to the isolation sleeve 23. The rotation of the first gear 231 drives the isolation sleeve 23 to rotate, thereby controlling the opening and closing angle of the valve 53 handle and adjusting the liquid flow of the liquid outlet pipe 5. The user monitors the filling amount in real time through the flow meter 7. When the preset value is reached, the handle 222 is reversed to close the valve 53 to complete the liquid taking.

[0030] The manual rotation operation is converted into precise control of the valve 53 through the gear rack transmission and the screw 223 mechanism, and the mechanical gain principle is used to reduce the torque required for the operation. This is particularly suitable for the possible opening and closing resistance of the valve 53 in a low-temperature environment. The isolation sleeve 23 is provided to wrap the handle of the valve 53 to avoid direct contact with low-temperature components. The handle 222 provides clear operation feedback, and the user can grasp the filling progress in real time through the flow meter 7 to avoid excessive liquid extraction.

[0031] In summary, the liquid collection mechanism 2 optimizes the labor-saving and controllability of manual operation through mechanical transmission, and combines isolation design and user guidance to achieve safe and efficient self-service collection of cryogenic liquids.

[0032] The anti-leakage mechanism 6 includes a fixed plate 61, which is fixedly connected to the inner wall of the box body 31, and a baffle 62 and a second gear 64 are rotatably connected to the fixed plate 61. The baffle 62 abuts against one side of the isolation sleeve 23, and a third gear 63 is fixedly connected to the middle of the baffle 62, and the third gear 63 is meshed with the second gear 64. A second rack 66 is meshed with one side of the second gear 64, and the second rack 66 is slidably connected in the second guide rail 65, and the second guide rail 65 is fixedly connected to the inner wall of the box body 31. One end of the second rack 66 is fixedly connected to a spring 67 and a telescopic rod 68, and the spring 67 is sleeved on the telescopic rod 68. One end of the second rack 66 away from the spring 67 is fixedly connected to a connecting plate 69, and one side of the connecting plate 69 abuts against a roller 611, and the roller 611 is rotatably installed in a push rod 610, one end of the push rod 610 is inserted into the connecting plate 69, and the other end is fixedly connected to the box door 32.

[0033] In the present application, when the box door 32 is closed, the roller 611 abuts against the connecting plate 69 and the baffle 62 abuts against the isolation sleeve 23, which limits the handle of the valve 53. Liquid cannot be taken by operating the liquid taking mechanism 2 without opening the box door 32.

[0034] During the closing process of the box door 32, the roller 611 at one end of the push rod 610 abuts against the connecting plate 69, so that the connecting plate 69 pushes the second rack 66 to slide in the second guide rail 65, and the second rack 66 drives the second gear 64 engaged therewith to rotate, and the second gear 64 is driven to engage with the third gear 63, so that the baffle 62 rotates and abuts against one side of the isolation sleeve 23. Since the isolation sleeve 23 is mounted on the handle of the valve 53, the baffle 62 can limit the rotation of the isolation sleeve 23, thereby preventing the valve 53 from being accidentally opened.

[0035] After the code scanning is completed, the box door 32 opens. As the box door 32 opens, the push rod 610 separates from the connecting plate 69. Under the action of the spring 67 and the telescopic rod 68, the second rack 66 moves away from the box door 32, and drives the second gear 64 and the third gear 63 to rotate in turn, so that the baffle 62 is separated from the isolation sleeve 23. At this time, the user can operate the liquid collection mechanism 2 to open the valve 53 to collect liquid. After the liquid is collected, the box door 32 is closed, and the push rod 610 abuts against the connecting plate 69 again, and the above action is repeated to make the baffle 62 abut against the isolation sleeve 23 again to ensure that the valve 53 is tightly closed.

[0036] The beneficial effects are remarkable: on the one hand, before opening the box door 32, the push rod 610 abuts against the connecting plate 69, so that the baffle 62 is tightly against the isolation sleeve 23, thereby ensuring that the valve 53 cannot be opened when the box door 32 is not opened, which greatly improves the safety of the entire liquid collection process and effectively avoids the risk of leakage of cryogenic liquid in the non-liquid collection state. On the other hand, after collecting the liquid, closing the box door 32 can make the push rod 610 abut against the connecting plate 69 again. Through a series of transmissions, the valve 53 is ensured to be tightly closed to prevent liquid leakage caused by the incomplete closure of the valve 53, reduce potential safety hazards and waste of resources, and ensure the stable operation and reliable use of the low-temperature liquid self-service liquid collection device.

[0037] In summary, the working principle of a low-temperature liquid self-service liquid dispensing device according to an embodiment of the present invention is as follows: 1. Swipe the card to open the door. Swipe the card or enter the password to open the protective door 1; 2. Scan the QR code to unlock. Scan the QR code on the display screen 33 to open the door 32; 3. Self-service filling: a guide sticker is affixed inside the box 31. Fill according to the recommended filling kilograms of the corresponding tank, and open the valve 53 to fill; 4. After closing the valve, observe the flow meter 7 data and close it when the recommended filling number is reached; 5. Lock and close the door, and close the box door 32 and the protective door 1.

[0038] The specific operation of switching the valve 53 is as follows: the user rotates the handle 222 to drive the screw 223 to rotate, and pushes the movable block 224 to slide along the inner wall of the bottom box 221, so that the first rack 21 moves horizontally in the first guide rail 25, driving the first gear 231 engaged therewith to rotate. The rotation of the first gear 231 drives the isolation sleeve 23 to rotate, and then controls the opening and closing angle of the valve 53 handle to adjust the liquid flow of the liquid outlet pipe 5. The user monitors the filling volume in real time through the flow meter 7. When the preset value is reached, the handle 222 is rotated in the opposite direction to close the valve 53 to complete the liquid extraction.

[0039] After the liquid is taken out, the box door 32 is closed. During the closing process of the box door 32, the roller 611 at one end of the push rod 610 abuts against the connecting plate 69, so that the connecting plate 69 pushes the second rack 66 to slide in the second guide rail 65, and the second rack 66 drives the second gear 64 meshing therewith to rotate, and the second gear 64 is driven to mesh with the third gear 63, so that the baffle 62 rotates and abuts against one side of the isolation sleeve 23. Since the isolation sleeve 23 is mounted on the handle of the valve 53, the baffle 62 can limit the rotation of the isolation sleeve 23, thereby preventing the valve 53 from being accidentally opened.

[0040] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A low-temperature liquid self-service liquid dispensing device, characterized in that: The invention comprises a liquid storage tank (4), a control box (3) is arranged on one side of the liquid storage tank (4), the control box (3) and the liquid storage tank (4) are arranged inside a protective door (1), a password lock (11) is arranged on the protective door (1), a liquid outlet pipe (5) is arranged through the inside of the control box (3), a valve (53) is arranged on the liquid outlet pipe (5), a flow meter (7) is installed inside the control box (3), a liquid collection mechanism (2) is arranged on the control box (3), and a leak prevention mechanism (6) is arranged on one side of the upper end of the liquid collection mechanism (2).

2. The low-temperature liquid self-service liquid dispensing device according to claim 1, characterized in that: One end of the liquid outlet pipe (5) is connected to the bottom of the liquid storage tank (4) via a first quick connector (51), and the other end is provided with a second quick connector (52). The valve (53) is installed inside the control box (3).

3. The low-temperature liquid self-service liquid dispensing device according to claim 1, characterized in that: The control box (3) comprises a box body (31), the box body (31) is hingedly connected to a box door (32), and a display screen (33) is provided on the box door (32).

4. The low-temperature liquid self-service liquid dispensing device according to claim 3, characterized in that: The liquid extraction mechanism (2) comprises an isolation sleeve (23), the isolation sleeve (23) being sleeved on a valve (53) handle, a first gear (231) being provided at the bottom of the isolation sleeve (23), the first gear (231) being rotatably mounted on a fixing frame (24), and the fixing frame (24) being fixedly mounted on an inner wall of the box body (31).

5. The low-temperature liquid self-service liquid dispensing device according to claim 4, characterized in that: A first guide rail (25) is fixedly connected to the inner wall of the bottom of the box body (31), a first rack (21) is slidably connected inside the first guide rail (25), the first rack (21) is meshingly connected to a first gear (231), and a moving assembly (22) is connected to the bottom of the first rack (21).

6. The low-temperature liquid self-service liquid dispensing device according to claim 5, characterized in that: The moving assembly (22) comprises a bottom box (221), the bottom box (221) being fixedly connected to the lower surface of the box body (31), a screw rod (223) being rotatably connected inside the bottom box (221), and a handle (222) being fixedly connected to one end of the screw rod (223).

7. The low-temperature liquid self-service liquid dispensing device according to claim 6, characterized in that: A movable block (224) is threadedly connected to the screw rod (223); the movable block (224) is slidably connected to the inner wall of the bottom box (221); and the movable block (224) is fixedly connected to the lower surface of the first rack (21).

8. The low-temperature liquid self-service liquid dispensing device according to claim 4, characterized in that: The anti-leakage mechanism (6) comprises a fixed plate (61), the fixed plate (61) being fixedly connected to the inner wall of the box body (31), a baffle plate (62) and a second gear (64) being rotatably connected to the fixed plate (61), the baffle plate (62) being in contact with one side of the isolation sleeve (23), a third gear (63) being fixedly connected to the middle of the baffle plate (62), and the third gear (63) being meshingly connected to the second gear (64).

9. The low-temperature liquid self-service liquid dispensing device according to claim 8, characterized in that: One side of the second gear (64) is meshingly connected to a second rack (66), the second rack (66) is slidably connected to a second guide rail (65), the second guide rail (65) is fixedly connected to an inner wall of the box body (31), one end of the second rack (66) is fixedly connected to a spring (67) and a telescopic rod (68), the spring (67) being sleeved on the telescopic rod (68).

10. The low-temperature liquid self-service liquid dispensing device according to claim 9, characterized in that: One end of the second rack (66) away from the spring (67) is fixedly connected to a connecting plate (69), one side of the connecting plate (69) is abutted against a roller (611), and the roller (611) is rotatably mounted in a push rod (610), one end of the push rod (610) is plugged into the connecting plate (69), and the other end is fixedly connected to the box door (32).

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