Movable liquid nitrogen extraction device

Abstract

The utility model provides a movable liquid nitrogen extraction device, which comprises a lifting plate, a liquid nitrogen extraction device, a liquid nitrogen extraction device, a liquid nitrogen extraction device, a liquid nitrogen extraction device and a liquid nitrogen extraction device, wherein the lifting plate is provided with a positioning groove matched with the bottom of a liquid nitrogen tank; rollers are arranged at the upper bottom end of the frame; the height adjusting assembly is used for adjusting the height of the lifting plate; and the infusion pump is used for extracting liquid nitrogen on the inner side of the liquid nitrogen tank. The device has the advantages that when the device is used, the bottom end of the liquid nitrogen tank is placed on the inner side of the positioning groove, the liquid nitrogen tank is prevented from moving, the stability in the using process is improved, the height adjusting assembly adjusts the height of the lifting plate and the liquid nitrogen tank, and the application range of the device is widened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to liquid nitrogen extraction technical field, especially a kind of mobile liquid nitrogen extraction device. BACKGROUND

[0002] The frozen embryos in embryo laboratory are stored in liquid nitrogen tank, in order to maintain low temperature, embryo laboratory needs to add liquid nitrogen to liquid nitrogen tank periodically, each liquid nitrogen tank is added twice about a week, currently mainly rely on manpower to add liquid nitrogen, each embryo room usually has 30-100 liquid nitrogen tanks, work is heavy and laborious, for the open liquid nitrogen container widely used in existing laboratory, liquid nitrogen is transferred to target container, usually as follows:

[0003] First, the way of pouring, the shortcomings of this way are: laborious, especially for the liquid nitrogen tank with volume above 30L, a person usually cannot complete liquid nitrogen pouring;Unsafety, pouring liquid nitrogen flow is not easy to control, easy to cause liquid nitrogen splashing, overflow, etc., low-temperature liquid nitrogen splashing and scattering, easy to bring personal safety hazard.

[0004] Second, gas pressure type liquid nitrogen pump;The shortcomings of this liquid nitrogen pump are: slow liquid nitrogen output, manual air pump or electric air pump is used to punch into air in liquid nitrogen container, only when air pressure reaches a certain degree, liquid nitrogen is pressed out, delay is obvious, and efficiency is low, and positioning structure is lacked in use process, liquid nitrogen tank needs to be manually carried to next experiment position for use, and positioning structure is lacked, liquid nitrogen tank is easy to move, which affects safety in use process. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing a mobile liquid nitrogen extraction device to solve at least one of the above technical problems.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] A mobile liquid nitrogen extraction device, comprising:

[0008] Lifting plate, the lifting plate is provided with positioning groove matched with the bottom of liquid nitrogen tank;

[0009] Frame, the frame is provided with roller at bottom end;

[0010] Height adjusting assembly, the height adjusting assembly is used for adjusting the height of lifting plate;

[0011] Liquid pumping pump, the liquid pumping pump is used for pumping liquid nitrogen inside liquid nitrogen tank.

[0012] Further, the frame comprises:

[0013] Base, the base is fixedly provided with inverted U-shaped handrail rod.

[0014] Two bottom rods are arranged in parallel, one end of each of the bottom rods is fixedly connected to the base, and the other end is provided with a directional roller;

[0015] A universal roller is installed at the lower end of the base.

[0016] Further, a first rotating hole is formed at one end of the bottom rod close to the base, and a first slot is formed at the other end of the bottom rod close to the directional roller;

[0017] The lifting plate is installed between the two bottom rods, a second rotating hole is formed at one end of the lifting plate close to the base, and a second slot is formed at the other end of the lifting plate away from the base;

[0018] The height adjusting assembly comprises a driving assembly and a cross lifting assembly, the cross lifting assembly comprises two cross rods, the middle ends of the two cross rods are hingedly connected, and the two ends of each cross rod are fixedly provided with a connecting shaft;

[0019] The height adjusting assembly comprises a driving assembly and a cross lifting assembly, the cross lifting assembly comprises two cross rods, the middle ends of the two cross rods are hingedly connected, and the two ends of each cross rod are fixedly provided with a connecting shaft;

[0020] One end of one of the cross rods is rotatably connected to the inner side of the first rotating hole, and the other end is installed in the second slot;

[0021] One end of the other cross rod is rotatably connected to the inner side of the second rotating hole, and the other end is installed in the first slot;

[0022] The driving assembly is used to drive the connecting shaft inside the first slot to move.

[0023] Further, the driving assembly is an electric cylinder, the shell of the electric cylinder is fixedly connected to the mounting hole in the bottom rod, a connecting block is fixedly arranged on the output shaft of the electric cylinder, a hinged hole matched with the connecting shaft is formed in the connecting block, and the connecting shaft inside the first slot is installed in the hinged hole.

[0024] Further, the number of the positioning grooves is multiple, the diameters of the multiple positioning grooves are different, the diameters of the multiple positioning grooves decrease from top to bottom, and the multiple positioning grooves are suitable for liquid nitrogen tanks with different bottom diameters.

[0025] Further, a guide inclined plate is arranged at the end of the lifting plate away from the base, a mounting plate is fixedly arranged on the lower end surface of the guide inclined plate, and a slot is formed in the mounting plate;

[0026] A mounting shaft is fixedly arranged on the lifting plate, and the mounting shaft is located inside the slot;

[0027] A slot matched with the guide inclined plate is formed in the lifting plate.

[0028] Furthermore, the liquid pump is connected to the vehicle frame via a positioning assembly, and the positioning assembly includes a receiving tube and a plug-in rod;

[0029] The plug-in rod is installed on the inner side of the receiving tube, and the receiving tube is provided with a sliding hole matching the inverted U-shaped handrail rod, the axis of the sliding hole is arranged perpendicular to the axis of the receiving tube, and a first threaded hole is provided on the side wall of the sliding hole, and a first tightening bolt is threadedly connected to the inner thread of the first threaded hole, and the first tightening bolt presses the outer side wall of the inverted U-shaped handrail rod, and a second threaded hole is provided on the receiving tube, and a second tightening bolt is threadedly connected to the inner thread of the second threaded hole, and the second tightening bolt presses the outer side wall of the plug-in rod.

[0030] Furthermore, the liquid inlet end of the liquid pump is provided with a liquid inlet pipe, and the liquid inlet pipe is located inside the liquid nitrogen tank. The liquid outlet end of the liquid pump is provided with a liquid outlet pipe, and an insulating sheath is fixed on the outside of the end of the liquid outlet pipe away from the liquid pump.

[0031] Furthermore, a hanging plate is fixed on the frame, and a notch matching the liquid outlet pipe is opened on the hanging plate, and a limiting groove corresponding to the root of the notch is opened on the upper end surface of the hanging plate, and the diameter of the limiting groove matches the outer diameter of the thermal insulation sheath.

[0032] Furthermore, a distribution box is fixedly provided on the vehicle frame, and a mobile power supply is provided in the distribution box, and the mobile power supply is used to supply power to the liquid pump.

[0033] Compared with the prior art, the mobile liquid nitrogen extraction device described in the present invention has the following beneficial effects:

[0034] (1) The mobile liquid nitrogen extraction device described in the utility model has the bottom end of the liquid nitrogen tank placed inside the positioning groove when in use, which prevents the liquid nitrogen tank from moving and improves the stability during use. The height adjustment component adjusts the height of the lifting plate and the liquid nitrogen tank, which expands the scope of application of the device.

[0035] (2) The mobile liquid nitrogen extraction device described in the present invention has a plurality of positioning grooves, each having different diameters. The diameters of the positioning grooves decrease from top to bottom, and the device is suitable for liquid nitrogen tanks with different bottom diameters. The positioning grooves position the liquid nitrogen tanks to prevent them from moving, and the device is suitable for liquid nitrogen tanks of different models, thereby broadening the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0038] Figure 2 A device three-dimensional structure schematic view of the embodiment of the utility model is provided. Figure 1 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0039] Figure 3 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0040] Figure 4 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0041] Figure 5 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0042] Figure 6 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0043] Figure 7 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0044] Figure 8 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0045] Figure 9 A device three-dimensional structure schematic view of the embodiment of the utility model is provided.

[0046] Explanation of reference signs:

[0047] 1, lifting plate; 2, guide inclined plate; 3, frame; 4, liquid nitrogen tank; 5, cross rod; 6, liquid pump; 7, receiving pipe; 8, hanging plate; 9, distribution box; 101, positioning groove; 102, second rotating hole; 103, second strip-shaped through hole; 104, mounting shaft; 105, insertion slot; 201, mounting plate; 202, strip-shaped hole; 301, bottom rod; 302, directional roller; 303, universal roller; 304, inverted U-shaped handrail rod; 305, first rotating hole; 306, first strip-shaped through hole; 307, base; 601, liquid inlet pipe; 602, liquid outlet pipe; 603, plug-in rod; 604, heat insulation sheath; 701, second jacking bolt; 702, first jacking bolt; 703, sliding hole; 801, notch; 802, limiting groove. DETAILED DESCRIPTION

[0048] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0049] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. Moreover, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0050] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0051] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0052] As Figures 1 to 9 shown, a mobile liquid nitrogen extraction device, comprising: lifting plate 1, lifting plate 1 is opened with the positioning groove 101 matched with the bottom of liquid nitrogen tank 4;Frame 3, the bottom end of frame 3 is provided with a roller;Height adjusting assembly, height adjusting assembly is used to adjust the height of lifting plate 1;Liquid pump 6, liquid pump 6 is used to extract the liquid nitrogen inside liquid nitrogen tank 4. When using, the bottom end of liquid nitrogen tank 4 is placed in the inside of positioning groove 101, liquid nitrogen tank 4 is placed, improves the stability in the use process, height adjusting assembly adjusts the height of lifting plate 1 and liquid nitrogen tank 4, and the application range of the device is widened.

[0053] Frame 3 includes: base 307, the inverted U-shaped handrail 304 is fixedly arranged on the base 307;Bottom bar 301, the number of bottom bar 301 is two, two bottom bars 301 are arranged in parallel, one end of bottom bar 301 is fixedly connected with base 307, and the other end is provided with directional roller 302;Universal roller 303, universal roller 303 is installed at the lower end of base 307.

[0054] The bottom rod 301 is provided with a first rotating hole 305 near one end of the base 307, and a first strip-shaped through hole 306 near the other end of the bottom rod 301; the lifting plate 1 is installed between the two bottom rods 301, and the lifting plate 1 is provided with a second rotating hole 102 near one end of the base 307 and a second strip-shaped through hole 103 away from the base 307.

[0055] In some embodiments, the height adjusting assembly comprises a driving assembly and two cross lifting assemblies, and the two cross lifting assemblies are installed on the two sides of the lifting plate 1; the cross lifting assembly comprises two cross rods 5, the middle ends of the two cross rods 5 are hinged, and the two ends of the cross rod 5 are fixedly provided with a connecting shaft; the rotating shaft of one end of one of the cross rods 5 is rotatably connected to the inner side of the first rotating hole 305, and the other end is installed on the inner side of the second strip-shaped through hole 103; the rotating shaft of one end of the other cross rod 5 is rotatably connected to the inner side of the second rotating hole 102, and the other end is installed on the inner side of the first strip-shaped through hole 306; the driving assembly is used to drive the connecting shaft on the inner side of the first strip-shaped through hole 306 to move. The driving assembly is an electric cylinder, the shell of the electric cylinder is fixedly connected to the mounting hole in the bottom rod 301, a connecting block is fixedly arranged on the output shaft of the electric cylinder, a hinge hole matched with the connecting shaft is formed in the connecting block, and the connecting shaft on the inner side of the first strip-shaped through hole 306 is installed on the inner side of the hinge hole. The electric cylinder drives the cross rod 5 to move, thereby changing the height of the lifting plate 1.

[0056] In some embodiments, the height adjusting assembly is an electric cylinder directly driving the lifting plate 1 to move up and down, and such a structure requires that the electric cylinder be vertically prevented, which is not convenient for placing the liquid nitrogen tank 4.

[0057] The number of the positioning grooves 101 is multiple, the diameters of the multiple positioning grooves 101 are different, and the diameters of the multiple positioning grooves 101 gradually decrease from top to bottom, which is suitable for liquid nitrogen tanks 4 with different bottom diameters, the positioning grooves 101 play a positioning role on the liquid nitrogen tank 4 to prevent it from moving, and are suitable for different models of liquid nitrogen tanks 4, thereby widening the application range of the device.

[0058] The lifting plate 1 is provided with a guide inclined plate 2 away from the base 307, the lower end surface of the guide inclined plate 2 is fixedly provided with a mounting plate 201, and a strip-shaped hole 202 is formed in the mounting plate 201; the lifting plate 1 is fixedly provided with a mounting shaft 104, and the mounting shaft 104 is located on the inner side of the strip-shaped hole 202; the lifting plate 1 is provided with a slot 105 matched with the guide inclined plate 2. When it is needed to place the liquid nitrogen tank 4 on the lifting plate 1, the guide inclined plate 2 is moved outward, the fixed shaft is in contact with one end of the lifting plate 1 close to the strip-shaped hole 202, the other end of the guide inclined plate 2 is in contact with the ground, and the plate in the inclined state is formed, thereby facilitating the movement of the liquid nitrogen tank 4 into the positioning groove 101 of the lifting plate 1.

[0059] The liquid pump 6 is connected to the vehicle frame 3 via a positioning assembly, which includes a receiving tube 7 and a plug-in rod 603. The plug-in rod 603 is mounted on the inner side of the receiving tube 7. The receiving tube 7 is provided with a sliding hole 703 that matches the inverted U-shaped handrail 304. The axis of the sliding hole 703 is perpendicular to the axis of the receiving tube 7. The side wall of the sliding hole 703 is provided with a first threaded hole, in which a first tightening bolt 702 is threadedly connected. The first tightening bolt 702 presses against the outer wall of the inverted U-shaped handrail 304. The receiving tube 7 is provided with a second threaded hole, in which a second tightening bolt 701 is threadedly connected. The second tightening bolt 701 presses against the outer wall of the plug-in rod 603. Loosening the first tightening bolt can adjust the height and position of the liquid pump 6, and loosening the second tightening bolt 701 can adjust the total length of the plug-in rod 603 and the receiving tube 7, making it suitable for different models of liquid nitrogen tanks 4.

[0060] The liquid inlet end of the liquid pump 6 is provided with a liquid inlet pipe 601, which is located inside the liquid nitrogen tank 4. The liquid outlet end of the liquid pump 6 is provided with a liquid outlet pipe 602. A heat-insulating sheath 604 is fixedly provided on the outer side of the end of the liquid outlet pipe 602 away from the liquid pump 6. The heat-insulating sheath 604 can prevent frostbite from the user, and the outer wall of the heat-insulating sheath 604 is provided with anti-slip grooves. A hanging plate 8 is fixedly provided on the frame 3. The hanging plate 8 is provided with a notch 801 that matches the liquid outlet pipe 602. The upper end surface of the hanging plate 8 is provided with a limiting groove 802 corresponding to the root of the notch 801. The diameter of the limiting groove 802 matches the outer diameter of the heat-insulating sheath 604. When the liquid outlet pipe 602 is not in use, the liquid outlet pipe 602 is inserted into the notch 801, and the heat-insulating sheath 604 is inserted into the limiting groove 802 to prevent the liquid outlet pipe 602 from falling off, thereby facilitating the use of the device.

[0061] A distribution box 9 is fixedly mounted on the frame 3 , and a mobile power supply is installed in the distribution box 9 . The mobile power supply is used to power the liquid pump 6 , and the mobile power supply is used to power the electric cylinder. Two switches are provided on the distribution box 9 to control the on and off of the power supply lines of the electric cylinder and the liquid pump 6 respectively. The switch for controlling the liquid pump 6 is located on the thermal insulation sheath 604 .

[0062] Working process:

[0063] The liquid nitrogen tank 4 is placed in the positioning groove 101, and then the device is moved to the designated position, and the liquid pump 6 is started to pump the liquid nitrogen into the designated container. The operation process is simple and the labor intensity is reduced. In addition, the setting of the positioning groove 101 for placing the liquid nitrogen tank 4 and moving it improves the safety of the use process.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions, which should be included in the scope of the claims and the description of the present application.

[0065] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A mobile liquid nitrogen extraction device, characterized in that: include: A lifting plate (1), wherein a positioning groove (101) is formed on the lifting plate (1) and matches the bottom of the liquid nitrogen tank (4); A vehicle frame (3), wherein a roller is provided at the upper bottom end of the vehicle frame (3); A height adjustment component, the height adjustment component being used to adjust the height of the lifting plate (1); A liquid extraction pump (6), the liquid extraction pump (6) is used to extract liquid nitrogen from the inside of the liquid nitrogen tank (4); The vehicle frame (3) comprises: A base (307), wherein an inverted U-shaped handrail (304) is fixedly provided on the base (307); Bottom rods (301), the number of the bottom rods (301) is two, the two bottom rods (301) are arranged in parallel, one end of the bottom rod (301) is fixedly connected to the base (307), and the other end is provided with a directional roller (302); A universal roller (303), the universal roller (303) being mounted on the lower end of the base (307); A first rotation hole (305) is formed at one end of the bottom rod (301) adjacent to the base (307), and a first strip-shaped through hole (306) is formed at one end of the bottom rod (301) adjacent to the directional roller (302); The lifting plate (1) is installed between the two bottom rods (301), and a second rotation hole (102) is opened at one end of the lifting plate (1) adjacent to the base (307), and a second strip-shaped through hole (103) is opened at one end of the lifting plate (1) away from the base (307); The height adjustment assembly includes a driving assembly and a cross-lifting assembly, wherein the number of the cross-lifting assemblies is two, and the two cross-lifting assemblies are respectively installed on both sides of the lifting plate (1); The cross-lifting assembly comprises two cross-rods (5), the middle ends of the two cross-rods (5) are hinged, and connecting shafts are fixedly provided at both ends of the cross-rods (5); The rotating shaft at one end of one of the cross rods (5) is rotatably connected to the inner side of the first rotating hole (305), and the other end is installed on the inner side of the second strip-shaped through hole (103); The rotating shaft at one end of the other cross rod (5) is rotatably connected to the inner side of the second rotating hole (102), and the other end is installed at the inner side of the first strip-shaped through hole (306); The driving assembly is used to drive the connecting shaft inside the first strip-shaped through hole (306) to move.

2. The mobile liquid nitrogen extraction device according to claim 1, characterized in that: The driving component is an electric cylinder, the housing of the electric cylinder is fixedly connected to the mounting hole in the bottom rod (301), a connecting block is fixedly provided on the output shaft of the electric cylinder, a hinge hole matching the connecting axis is opened on the connecting block, and the connecting shaft inside the first strip-shaped through hole (306) is installed on the inner side of the hinge hole.

3. The mobile liquid nitrogen extraction device according to claim 1, characterized in that: There are multiple positioning grooves (101), the diameters of the multiple positioning grooves (101) are different, and the diameters of the multiple positioning grooves (101) decrease from top to bottom, which is suitable for liquid nitrogen tanks (4) with different bottom diameters.

4. The mobile liquid nitrogen extraction device according to claim 1, characterized in that: A guide inclined plate (2) is provided at one end of the lifting plate (1) away from the base (307), a mounting plate (201) is fixedly provided on the lower end surface of the guide inclined plate (2), and a strip-shaped hole (202) is opened on the mounting plate (201); A mounting shaft (104) is fixedly provided on the lifting plate (1), and the mounting shaft (104) is located inside the strip-shaped hole (202); The lifting plate (1) is provided with a slot (105) that matches the guide inclined plate (2).

5. The mobile liquid nitrogen extraction device according to claim 1, characterized in that: The liquid pump (6) is connected to the vehicle frame (3) via a positioning assembly, wherein the positioning assembly comprises a receiving tube (7) and a connecting rod (603); The plug-in rod (603) is installed on the inner side of the receiving tube (7), and the receiving tube (7) is provided with a sliding hole (703) that matches the inverted U-shaped handrail rod (304). The axis of the sliding hole (703) is arranged perpendicular to the axis of the receiving tube (7). A first threaded hole is provided on the side wall of the sliding hole (703), and a first tightening bolt (702) is threadedly connected to the first threaded hole. The first tightening bolt (702) tightens the outer wall of the inverted U-shaped handrail rod (304). A second threaded hole is provided on the receiving tube (7), and a second tightening bolt (701) is threadedly connected to the second threaded hole. The second tightening bolt (701) tightens the outer wall of the plug-in rod (603).

6. The mobile liquid nitrogen extraction device according to claim 1, characterized in that: The liquid inlet end of the liquid pump (6) is provided with a liquid inlet pipe (601), and the liquid inlet pipe (601) is located inside the liquid nitrogen tank (4). The liquid outlet end of the liquid pump (6) is provided with a liquid outlet pipe (602), and a heat insulating sheath (604) is fixedly provided on the outer side of the end of the liquid outlet pipe (602) away from the liquid pump (6).

7. The mobile liquid nitrogen extraction device according to claim 6, characterized in that: A hanging plate (8) is fixedly provided on the vehicle frame (3), and a notch (801) matching the liquid outlet pipe (602) is provided on the hanging plate (8), and a limiting groove (802) corresponding to the root of the notch (801) is provided on the upper end surface of the hanging plate (8), and the diameter of the limiting groove (802) matches the outer diameter of the heat-insulating sheath (604).

8. The mobile liquid nitrogen extraction device according to claim 1, characterized in that: A distribution box (9) is fixedly provided on the vehicle frame (3), wherein a mobile power supply is provided in the distribution box (9), and the mobile power supply is used to supply power to the liquid extraction pump (6).

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