Liquid nitrogen granulator

Abstract

The utility model discloses a liquid nitrogen granulator which comprises a heat preservation cylinder body, a cover body, a liquid dropping device and a liquid nitrogen granulation assembly, one end of the heat preservation cylinder body is provided with an opening, the cover body is arranged at the opening of the heat preservation cylinder body, and the liquid dropping device is arranged on the cover body and communicated with the liquid nitrogen granulation assembly arranged in the heat preservation cylinder body. The liquid nitrogen granulation assembly can enter and exit from the heat preservation barrel from the opening of the heat preservation barrel; when the liquid nitrogen granulation assembly is used for a period of time, the filter part needs to be replaced, so that the cleanliness of the recycled liquid nitrogen is ensured, and the granulation effect is ensured; however, a filter part is generally arranged below a liquid nitrogen granulation assembly and is not easy to replace when needing to be replaced, and if the filter part is replaced from a side opening of a heat preservation barrel, the heat preservation effect of the heat preservation barrel can be affected. According to the utility model, the opening is formed in the top of the heat-insulating barrel, and the liquid nitrogen granulating component enters and exits from the heat-insulating barrel from the opening, so that the problem of replacement of a filtering piece in the liquid nitrogen granulating component is solved on the premise of not influencing the heat-insulating effect of the heat-insulating barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen granulation, in particular to a liquid nitrogen granulator. Background Art

[0002] For APIs and probiotics, the conventional freeze-drying operation method is to manually or automatically load the drug solution into a freeze-drying tray or a freeze-drying plate layer with a flange, and then perform vacuum drying. API products have high yields and large loading volumes, so it is particularly important to increase the sublimation speed to shorten the freeze-drying cycle and increase production capacity. For probiotics products that require activity, it is even more necessary to shorten the freeze-drying cycle to maintain the biological activity of the product and extend the shelf life of the product. The traditional freeze-drying method has slow product sublimation, long freeze-drying cycle, and difficulty in discharging, but the use of liquid nitrogen granulation freeze-drying can effectively solve these problems.

[0003] Liquid nitrogen granulation freeze drying is a new technology that first freezes the material to be freeze-dried into uniform particles in a special liquid nitrogen device, and then transfers it to the freeze dryer for vacuum drying. This process replaces the time-consuming freezing control process in the freeze dryer with liquid nitrogen granulation to complete it quickly. After a large number of tests and comparative analysis of this process, it is found that the liquid nitrogen granulation freeze drying process has many advantages. However, after the liquid nitrogen granulator has been used for a period of time, the internal filter needs to be replaced. Utility Model Content

[0004] The utility model aims to provide a liquid nitrogen granulator, which solves the problem of how to replace the filter element in the liquid nitrogen granulator in the prior art.

[0005] The utility model is realized as follows: a liquid nitrogen granulator comprises a heat preservation cylinder, a cover, a dripping device and a liquid nitrogen granulating component, wherein one end of the heat preservation cylinder is open, the cover is arranged at the opening of the heat preservation cylinder, the dripping device is arranged on the cover and is communicated with the liquid nitrogen granulating component arranged in the heat preservation cylinder, and the liquid nitrogen granulating component can enter and exit the heat preservation cylinder from the opening of the heat preservation cylinder.

[0006] After the liquid nitrogen granulation assembly is used for a period of time, the filter element needs to be replaced to ensure the cleanliness of the recycled liquid nitrogen, thereby ensuring the granulation effect; however, the filter element is generally arranged below the liquid nitrogen granulation assembly, and it is not easy to replace it when it needs to be replaced. The utility model opens an end of the heat preservation cylinder, and the liquid nitrogen granulation assembly enters and exits the heat preservation cylinder from the opening, thereby solving the problem of replacing the filter element in the liquid nitrogen granulation assembly without affecting the heat preservation effect of the heat preservation cylinder.

[0007] A further technical solution of the utility model is that the heat-insulating cylinder is a double-layer structure, and a vacuum cavity is formed between the double-layer structure.

[0008] The existing thermal insulation cylinder generally uses thermal insulation cotton for thermal insulation, but the thermal insulation effect of the thermal insulation cotton is not good. If the thermal insulation effect needs to be improved, a large amount of thermal insulation cotton is needed, which is costly and occupies a large space. The utility model evacuates the double-layer structure of the thermal insulation cylinder to form a vacuum chamber for thermal insulation. When the filter element needs to be replaced, the liquid nitrogen granulating component enters and exits the thermal insulation cylinder from the top opening of the thermal insulation cylinder without passing through the vacuum chamber, thereby avoiding opening a large range of openings between the double-layer structures and ensuring the integrity of the double-layer structure. Not only is the thermal insulation effect good, but the double-layer structure is not easily damaged during the vacuuming process.

[0009] A further technical solution of the utility model is that the liquid nitrogen granulation assembly comprises a granulation part and a filtering part arranged below the granulation part, and the filtering part comprises a detachable filtering element.

[0010] The filter element is used to filter impurities in liquid nitrogen so that the filtered liquid nitrogen can be reused; during long-term use, the filtering effect of the filter element will decrease, so the filter element needs to be replaced regularly to ensure the filtering effect.

[0011] A further technical solution of the utility model is: a discharging piece is provided at the output end of the granulating part, and a discharging structure which is separable from the discharging piece is provided on the heat-insulating cylinder.

[0012] The discharge piece is used to discharge the product from the liquid nitrogen pelletizer. When the filter element needs to be replaced, the liquid nitrogen pelletizing assembly needs to be taken out from the opening. In order to avoid interference between the discharge piece and the external docking structure, the discharge piece and the discharge structure are docked in a detachable manner.

[0013] A further technical solution of the utility model is: the discharge piece is placed in the heat-insulating cylinder, the feed end of the discharge structure is sleeved on the outer periphery of the discharge piece and can move along the discharge piece for connecting or separating with the discharge piece, and the discharge end of the discharge structure is placed outside the heat-insulating cylinder.

[0014] The discharge piece is in the insulation cylinder, and the feed end of the discharge structure is sleeved on the outer periphery of the discharge piece, which can completely discharge the processed material without affecting the material discharge, and the discharge structure can move along the discharge piece, which is convenient for the connection and separation of the discharge structure and the discharge piece; the discharge end of the discharge structure is placed on the outside of the insulation cylinder, and the discharge structure is used to discharge the material in the discharge piece.

[0015] A further technical solution of the utility model is: a connecting pipe communicating with the inside and outside of the heat-insulating cylinder is provided on the heat-insulating cylinder, and a feeding end of the discharge structure passes through the connecting pipe and cooperates with the discharge piece.

[0016] The design of the connecting pipe does not require a large opening on the insulation cylinder, and does not affect the insulation effect of the insulation cylinder.

[0017] A further technical solution of the utility model is that: one end of the connecting pipe placed outside the heat-insulating cylinder is provided with a flange member for detachably mounting the discharge structure.

[0018] The flange is located outside the heat preservation cylinder, which is very convenient for detachable installation of the discharge structure; thus, the process of replacing the filter element is highly efficient.

[0019] A further technical solution of the utility model is: the discharge structure comprises a discharge pipe, a quick-release joint is arranged on the outer side of the discharge pipe, and the discharge structure is detachably connected to the flange part through the quick-release joint.

[0020] The quick-release connector is detachably connected to the outside of the heat preservation cylinder, which is convenient for installation and disassembly.

[0021] A further technical solution of the utility model is: a collecting chamber for collecting liquid nitrogen is provided below the outer periphery of the discharge pipe, and a baffle plate capable of opening and closing the discharge end of the discharge pipe is provided at one end of the discharge pipe away from the discharge piece.

[0022] The material coming out of the discharging piece can further collect liquid nitrogen when passing over the collecting chamber; the switch of the baffle plate can be used to quantitatively discharge the material in the discharging channel.

[0023] A further technical solution of the utility model is: a positioning piece is arranged in the heat-insulating cylinder, and a hanging ear arranged above the positioning piece is arranged on the liquid nitrogen granulating assembly.

[0024] The liquid nitrogen granulation component is provided with a hanging ear, and the heat preservation cylinder is provided with a positioning piece for positioning the hanging ear, thereby ensuring that the liquid nitrogen granulation component is stably installed and the liquid nitrogen granulation component can be taken in and out from the opening of the heat preservation cylinder.

[0025] Beneficial effects of the utility model: after the liquid nitrogen granulation assembly is used for a period of time, the filter element needs to be replaced to ensure the cleanliness of the circulating liquid nitrogen, thereby ensuring the granulation effect; however, the filter element is generally arranged below the liquid nitrogen granulation assembly, and it is not easy to replace it when it needs to be replaced. The utility model solves the problem of replacing the filter element in the liquid nitrogen granulation assembly by opening the end of the insulation cylinder, and the liquid nitrogen granulation assembly enters and exits the insulation cylinder from the opening, thereby not affecting the insulation effect of the insulation cylinder.

[0026] The existing thermal insulation cylinder generally uses thermal insulation cotton for thermal insulation, but the thermal insulation effect of the thermal insulation cotton is not good. If the thermal insulation effect needs to be improved, a large amount of thermal insulation cotton is needed, which is costly and occupies a large space. The utility model evacuates the double-layer structure of the thermal insulation cylinder to form a vacuum chamber for thermal insulation. When the filter element needs to be replaced, the liquid nitrogen granulating component enters and exits the thermal insulation cylinder from the top opening of the thermal insulation cylinder without passing through the vacuum chamber, thereby avoiding opening a large range of openings between the double-layer structures and ensuring the integrity of the double-layer structure. Not only is the thermal insulation effect good, but the double-layer structure is not easily damaged during the vacuuming process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a liquid nitrogen granulator provided by the utility model;

[0028] Figure 2 It is an enlarged view of point A provided by the utility model;

[0029] Figure 3 The utility model provides a structural schematic diagram of a liquid nitrogen granulating component in a liquid nitrogen granulating machine for entering and exiting an opening of a heat preservation cylinder.

[0030] Reference numerals: 1. Insulation cylinder, 11. Connecting pipe, 12. Flange,

[0031] 2. Liquid nitrogen granulation components, 21. Discharging parts, 22. Hanging ears,

[0032] 3. Vacuum chamber,

[0033] 4. Discharging structure, 41. Discharging pipe, 42. Quick-release connector, 43. Collecting chamber, 44. Baffle plate, 45. Discharging end, 46. Oscillator, 47. Cylinder, 5. Filter, 6. Cover, 7. Dropping device. DETAILED DESCRIPTION

[0034] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0035] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the present specification are only used to match the contents disclosed in the specification for people familiar with the technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present utility model, should still fall within the scope of the technical contents disclosed by the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in the present specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present utility model. The change or adjustment of the relative relationship, without substantial change of the technical contents, should also be regarded as the scope of the implementation of the present utility model.

[0036] Embodiment 1:

[0037] Figure 1-3 A liquid nitrogen granulator is shown, comprising a heat-insulating cylinder 1, a cover 6, a dripping device 7 and a liquid nitrogen granulating assembly 2. One end of the heat-insulating cylinder 1 is open, the cover 6 is placed at the opening of the heat-insulating cylinder 1, the dripping device 7 is placed on the cover 6 and is connected to the liquid nitrogen granulating assembly 2 placed in the heat-insulating cylinder 1, and the liquid nitrogen granulating assembly 2 can enter and exit the heat-insulating cylinder 1 from the opening of the heat-insulating cylinder 1.

[0038] In this embodiment, the heat-insulating cylinder 1 is a double-layer structure, and a vacuum chamber 3 is formed between the double-layer structure.

[0039] In this embodiment, the liquid nitrogen granulation assembly 2 includes a granulation portion and a filtering portion disposed below the granulation portion, and the filtering portion includes a detachable filter element 5 .

[0040] In this embodiment, the heat exchange inside and outside the heat preservation cylinder needs to be reduced during the granulation process to ensure the temperature of the liquid nitrogen inside the heat preservation cylinder, thereby ensuring the effect of granulation. The heat preservation cylinder is a double-layer structure, and the cavity between the double-layer structure is evacuated to form a vacuum chamber 3, thereby achieving heat preservation.

[0041] In this embodiment, the liquid nitrogen granulation assembly 2 includes a granulation portion and a filtering portion disposed below the granulation portion, and the filtering portion includes a filter element 5 .

[0042] In this embodiment, a discharging member 21 is provided at the output end of the granulating section, and a discharging structure 4 detachable from the discharging member 21 is provided on the heat-insulating cylinder 1 .

[0043] The discharge piece is used to discharge the product from the liquid nitrogen pelletizer. When the filter element needs to be replaced, the liquid nitrogen pelletizing assembly needs to be taken out from the opening. In order to avoid interference between the discharge piece and the external docking structure, the discharge piece and the discharge structure are connected in a detachable manner.

[0044] In this embodiment, one end of the discharge structure 4 is detachably connected to the discharge piece and the other end is placed outside the heat preservation cylinder. The discharge structure is used to discharge the material in the discharge piece for collection.

[0045] In this embodiment, the discharge piece 21 is placed in the insulation cylinder 1, the feed end of the discharge structure 4 is sleeved on the outer periphery of the discharge piece 21 and can move along the discharge piece 21 for connecting or separating with the discharge piece 21, and the discharge end 45 of the discharge structure 4 is placed on the outside of the insulation cylinder 1.

[0046] The discharge piece is in the insulation cylinder, and the feed end of the discharge structure is sleeved on the outer periphery of the discharge piece, which can completely discharge the processed material without affecting the material discharge, and the discharge structure can move along the discharge piece, which is convenient for the connection and separation of the discharge structure and the discharge piece; the discharge end of the discharge structure is placed on the outside of the insulation cylinder, and the discharge structure is used to discharge the material in the discharge piece.

[0047] In this embodiment, a connecting pipe 11 connecting the inside and outside of the heat-insulating cylinder 1 is provided on the heat-insulating cylinder 1 , and the feed end of the discharge structure 4 passes through the connecting pipe 11 and cooperates with the discharge piece 21 .

[0048] The design of the connecting pipe does not require a large opening on the insulation cylinder, and does not affect the insulation effect of the insulation cylinder.

[0049] In this embodiment, one end of the connecting pipe 11 disposed outside the heat-insulating cylinder 1 is provided with a flange 12 for detachably mounting the discharge structure 4 .

[0050] The flange is located outside the heat preservation cylinder, which is very convenient for detachable installation of the discharge structure; thus, the process of replacing the filter element is highly efficient.

[0051] In this embodiment, the discharge structure 4 includes a discharge pipe 41 , and a quick-release connector 42 is disposed on the outer side of the discharge pipe 41 . The discharge structure 4 is detachably connected to the outer side of the flange 12 via the quick-release connector 42 .

[0052] The quick-release connector is detachably connected to the outside of the heat preservation cylinder, which is convenient for installation and disassembly.

[0053] In this embodiment, the cooperation between the quick-release connector and the flange member can realize the detachable installation of the discharge structure.

[0054] In this embodiment, a collecting chamber 43 for collecting liquid nitrogen is provided below the outer periphery of the discharge pipe 41 , and a baffle plate 44 capable of opening and closing a discharge end 45 of the discharge pipe 41 is provided at one end of the discharge pipe 41 away from the discharge member 21 .

[0055] The material coming out of the discharge piece can further collect liquid nitrogen when passing over the collecting chamber; the switch of the baffle plate can be used to quantitatively discharge the material in the discharge channel. The material first passes over the collecting chamber and then passes through the baffle plate.

[0056] In this embodiment, a strip groove connecting the discharge channel and the collecting chamber is provided on the discharge channel, and the liquid nitrogen in the material passing above the collecting chamber is collected in the collecting chamber through the strip groove.

[0057] In this embodiment, the collection chamber discharges the collected liquid nitrogen through a pipeline.

[0058] In this embodiment, a detachable cylinder 47 is provided on the discharge pipe 41 , and the cylinder 47 is detachably connected to the baffle plate 44 .

[0059] The cylinder is used to drive the baffle plate to rise and fall, thereby opening and closing the discharge end; the cylinder and the baffle plate are detachable, which is convenient for replacing parts and reducing costs.

[0060] In this embodiment, an oscillator 46 is provided on the discharge pipe 41 .

[0061] The oscillator is used to assist in discharging when the material in the discharging pipe is blocked.

[0062] In this embodiment, a positioning piece is provided in the heat-insulating cylinder 1, and a hanging ear 22 is provided on the liquid nitrogen granulating assembly 2 and is placed above the positioning piece.

[0063] The liquid nitrogen granulation component is provided with a hanging ear, and the heat preservation cylinder is provided with a positioning piece for positioning the hanging ear, thereby ensuring that the liquid nitrogen granulation component is stably installed and the liquid nitrogen granulation component can be taken in and out from the opening of the heat preservation cylinder.

[0064] In this embodiment, the positioning member is a plurality of arc-shaped members, and there are gaps between the arc-shaped members for the discharge members to pass through.

[0065] In this embodiment, the liquid nitrogen granulation assembly is connected to the cover body, and the liquid nitrogen granulation assembly can be moved into and out of the heat preservation cylinder from the opening of the heat preservation cylinder by moving the cover body.

[0066] The working principle of the utility model: after the liquid nitrogen granulation assembly is used for a period of time, the filter element needs to be replaced to ensure the cleanliness of the liquid nitrogen for recycling, thereby ensuring the effect of granulation; however, the filter element is generally arranged below the liquid nitrogen granulation assembly, and it is not easy to replace it when it needs to be replaced. The utility model solves the problem of replacing the filter element in the liquid nitrogen granulation assembly by opening the end of the insulation cylinder, and the liquid nitrogen granulation assembly enters and exits the insulation cylinder from the opening, thereby solving the problem of replacing the filter element in the liquid nitrogen granulation assembly without affecting the insulation effect of the insulation cylinder. The existing insulation cylinder generally uses insulation cotton for thermal insulation, and the insulation effect of the insulation cotton is not good. If the insulation effect needs to be improved, a large amount of insulation cotton is required, which is costly and occupies a large space; the utility model vacuumizes the double-layer structure of the insulation cylinder to form a vacuum chamber for thermal insulation. When the filter element needs to be replaced, the liquid nitrogen granulation assembly enters and exits the insulation cylinder from the top opening of the insulation cylinder without passing through the vacuum chamber, avoiding opening a large range of openings between the double-layer structures, ensuring the integrity of the double-layer structure, not only having a good insulation effect but also not being easily damaged during the vacuuming process.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid nitrogen granulator, characterized in that: The invention comprises a heat-insulating cylinder (1), a cover (6), a liquid dripping device (7) and a liquid nitrogen granulating assembly (2); the heat-insulating cylinder (1) has an opening at one end; the cover (6) is arranged at the opening of the heat-insulating cylinder (1); the liquid dripping device (7) is arranged on the cover (6) and is connected to the liquid nitrogen granulating assembly (2) arranged in the heat-insulating cylinder (1); and the liquid nitrogen granulating assembly (2) can enter and exit the heat-insulating cylinder (1) from the opening of the heat-insulating cylinder (1).

2. A liquid nitrogen granulator according to claim 1, characterized in that: The heat-insulating cylinder (1) is a double-layer structure, and a vacuum chamber (3) is formed between the double-layer structure.

3. A liquid nitrogen granulator according to claim 1, characterized in that: The liquid nitrogen granulation assembly (2) comprises a granulation portion and a filtering portion disposed below the granulation portion, wherein the filtering portion comprises a detachable filtering element (5).

4. A liquid nitrogen granulator according to claim 3, characterized in that: The output end of the granulating section is provided with a discharge piece (21), and the heat-insulating cylinder (1) is provided with a discharge structure (4) that is separable from the discharge piece (21).

5. A liquid nitrogen granulator according to claim 4, characterized in that: The discharge piece (21) is placed inside the heat-insulating cylinder (1); the feed end of the discharge structure (4) is sleeved on the outer periphery of the discharge piece (21) and can move along the discharge piece (21) for connection with or separation from the discharge piece (21); and the discharge end (45) of the discharge structure (4) is placed outside the heat-insulating cylinder (1).

6. A liquid nitrogen granulator according to claim 4, characterized in that: The heat-insulating cylinder (1) is provided with a connecting pipe (11) communicating with the inside and outside of the heat-insulating cylinder (1), and the feeding end of the discharge structure (4) passes through the connecting pipe (11) and cooperates with the discharge piece (21).

7. A liquid nitrogen granulator according to claim 6, characterized in that: One end of the connecting pipe (11) disposed outside the heat-insulating cylinder (1) is provided with a flange (12) for detachably mounting the discharge structure (4).

8. A liquid nitrogen granulator according to claim 7, characterized in that: The discharge structure (4) comprises a discharge pipe (41), a quick-release joint (42) is provided on the outside of the discharge pipe (41), and the discharge structure (4) is detachably connected to the flange (12) via the quick-release joint (42).

9. A liquid nitrogen granulator according to claim 8, characterized in that: A collecting chamber (43) for collecting liquid nitrogen is provided below the outer periphery of the discharge pipe (41), and a baffle plate (44) capable of opening and closing a discharge end (45) of the discharge pipe (41) is provided at one end of the discharge pipe (41) away from the discharge member (21).

10. The liquid nitrogen granulator according to claim 1, characterized in that: A positioning piece is provided in the heat-insulating cylinder (1), and a hanging ear (22) is provided on the liquid nitrogen granulating component (2) and is placed above the positioning piece.

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