Exhaust port heater of liquid nitrogen gas-liquid separator

Abstract

The utility model discloses an exhaust port heater for a liquid nitrogen gas-liquid separator, which belongs to the technical field of low-temperature preservation instruments and comprises a breather pipe for nitrogen to flow and a heating jacket fixed outside the breather pipe, a cavity is arranged in the heating jacket, a plurality of electric heating pipes are mounted in the cavity of the heating jacket, and the electric heating pipes are connected with the breather pipe. A connecting sleeve fixedly connected with the ventilation pipe is fixed to the bottom of the heating sleeve, guide grooves are formed in the outer walls of the two sides of the connecting sleeve, connecting rods are movably connected into the guide grooves of the connecting sleeve, and fixing blocks are fixed to the end faces, located in the connecting sleeve, of the connecting rods; the connecting rod is sleeved with a fixing spring used for supporting the fixing block, a telescopic hose is fixed to the top of the ventilation pipe, and an air outlet pipe is fixed to the top of the telescopic hose. The heater for the exhaust port of the liquid nitrogen gas-liquid separator can be quickly connected with the exhaust port of the liquid nitrogen gas-liquid separator, and the angle of the gas outlet pipe can be flexibly adjusted according to exhaust requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-temperature preservation equipment, and in particular relates to an exhaust port heater of a liquid nitrogen gas-liquid separator. Background Art

[0002] Liquid nitrogen is a liquid form of nitrogen formed at low temperatures. It is inert, colorless, odorless, non-corrosive, non-flammable, and extremely low in temperature. In industry, liquid nitrogen is obtained by air fractionation. The air is first purified and then liquefied under a pressurized and cooled environment, and the components in the air are separated by their different boiling points. Nitrogen is required for protection during the filling process of food, beverages, and liquid medicines. The nitrogen used here is low-temperature nitrogen, which is heated by liquid nitrogen.

[0003] In the prior art, nitrogen gas and liquid nitrogen are separated by a liquid nitrogen gas-liquid separator. In order to meet the processing requirements of food, beverages and liquid medicines, a heating device is connected to the exhaust port of the liquid nitrogen gas-liquid separator to heat the separated low-temperature nitrogen. However, the existing processing devices are often connected to external pipes through flanges, and most flanges are installed with multiple bolts, which makes it inconvenient to disassemble and assemble.

[0004] Reference to the Chinese authorized patent with authorization announcement number: CN211184268U: A heater for the exhaust port of a liquid nitrogen gas-liquid separator. The utility model has two electric heating blocks that slightly heat the liquid nitrogen from two sides through a liquid heating sleeve to meet the nitrogen demand during the filling process of liquids such as food and beverages. It has a simple structure and low cost. However, it also has the above-mentioned technical problems, and is connected to the external delivery pipeline through a flange, which makes it inconvenient to disassemble and assemble. Utility Model Content

[0005] The utility model aims to provide a liquid nitrogen gas-liquid separator exhaust port heater to solve the problem proposed in the above background technology that the flange is connected to the external pipeline through the flange, and the flange is mostly installed by multiple bolts, which makes it inconvenient to disassemble and assemble.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid nitrogen gas-liquid separator exhaust port heater, comprising a vent pipe for nitrogen flow and a heating sleeve fixed to the outside of the vent pipe, wherein a cavity is provided in the heating sleeve, a plurality of electric heating pipes are installed in the cavity of the heating sleeve, and a connecting sleeve fixedly connected to the vent pipe is fixed at the bottom of the heating sleeve;

[0007] Guide grooves are provided on both side outer walls of the connecting sleeve, and a connecting rod is movably connected in the guide groove of the connecting sleeve, a fixing block is fixed to the end surface of the connecting rod located inside the connecting sleeve, a fixing spring for supporting the fixing block is sleeved on the outside of the connecting rod, a telescopic hose is fixed on the top of the ventilation pipe, and an outlet pipe for nitrogen discharge is fixed on the top of the telescopic hose.

[0008] In a further embodiment, two connection blocks are fixed to the top of the ventilation pipe, and the outer wall of the connection block is movably connected to a positioning block fixedly connected to the air outlet pipe.

[0009] In a further embodiment, a connecting column is fixed to an outer wall of the connecting block on one side facing the positioning block, and a rotation groove matching the connecting column is provided in the positioning block.

[0010] In a further embodiment, movable grooves are formed on the outer walls around the connecting column, a supporting spring is placed in the movable groove of the connecting column, and a limiting block movable in the movable groove of the connecting column is provided on one side of the supporting spring.

[0011] In a further embodiment, a positioning pin is fixed to a side of the limiting block away from the supporting spring, and a plurality of positioning grooves matching the positioning pin are formed in the positioning block.

[0012] In a further embodiment, a sealing ring fixedly connected to a top plate of a connecting sleeve is sleeved on the outside of the vent pipe, and a pulling block is fixed to the end surface of the connecting rod located outside the connecting sleeve.

[0013] Technical effects and advantages of the utility model:

[0014] The heater for the exhaust port of the liquid nitrogen gas-liquid separator inserts one end of the vent pipe into the exhaust pipe of the liquid nitrogen gas-liquid separator, and a fixing spring supports the fixing block, so that the two fixing blocks are closely attached to the outer wall of the exhaust pipe of the liquid nitrogen gas-liquid separator, thereby quickly completing the connection between the vent pipe and the exhaust pipe of the liquid nitrogen gas-liquid separator, avoiding the need to connect with an external pipeline through a flange, and making disassembly and assembly more convenient;

[0015] Through the rotatable telescopic hose, the angle of the outlet pipe can be flexibly adjusted according to the position of the nitrogen collection device, and the staff does not need to adjust the position of the nitrogen collection device, which is more flexible and convenient to use;

[0016] The electric heating tube in the heating sleeve can heat the nitrogen introduced, and the corresponding number of electric heating tubes can be opened according to the temperature required for nitrogen heating, and the heating temperature can be flexibly adjusted to meet the processing requirements of different foods, beverages and liquid medicines. The exhaust port heater of the liquid nitrogen gas-liquid separator can be quickly connected to the exhaust port of the liquid nitrogen gas-liquid separator, and the angle of the outlet pipe can be flexibly adjusted according to the exhaust requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic structural diagram of the heating jacket of the utility model in a cut-away state;

[0020] Figure 3 It is a schematic diagram of the structure of the connecting sleeve of the utility model in a cut-away state;

[0021] Figure 4 It is a structural schematic diagram of the connection block of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the connecting column of the utility model in a cut-away state;

[0023] Figure 6 It is a structural schematic diagram of the positioning block of the utility model in a cut-away state.

[0024] In the figure: 1. ventilation pipe; 2. heating sleeve; 3. electric heating pipe; 4. connecting sleeve; 5. sealing ring; 6. connecting rod; 7. fixing block; 8. fixing spring; 9. pulling block; 10. telescopic hose; 11. exhaust pipe; 12. connecting block; 13. connecting column; 14. positioning block; 15. supporting spring; 16. limiting block; 17. positioning pin. DETAILED DESCRIPTION

[0025] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0026] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0027] See also Figure 1-6The utility model provides a heater for the exhaust port of a liquid nitrogen gas-liquid separator, comprising a vent pipe 1 for nitrogen flow and a heating sleeve 2 fixed to the outside of the vent pipe 1, wherein a cavity is provided in the heating sleeve 2, and a plurality of electric heating tubes 3 are installed in the cavity of the heating sleeve 2, and the switches of the plurality of electric heating tubes 3 can be controlled respectively, and the nitrogen introduced can be heated by the electric heating tubes 3 in the heating sleeve 2, and a corresponding number of electric heating tubes 3 can be turned on according to the temperature required for heating the nitrogen, and the heating temperature can be flexibly adjusted to meet the processing requirements of different foods, beverages and liquid medicines;

[0028] A connecting sleeve 4 fixedly connected to the vent pipe 1 is welded to the bottom of the heating sleeve 2, and a sealing ring 5 fixedly connected to the top plate of the connecting sleeve 4 is sleeved on the outside of the vent pipe 1. When one end of the vent pipe 1 is inserted into the exhaust pipe of the liquid nitrogen gas-liquid separator, the sealing ring 5 is tightly attached to the surface of the exhaust pipe of the liquid nitrogen gas-liquid separator, thereby ensuring the sealing between the vent pipe 1 and the exhaust pipe of the liquid nitrogen gas-liquid separator. Guide grooves are provided on the outer walls of both sides of the connecting sleeve 4, and a connecting rod 6 is movably connected in the guide groove of the connecting sleeve 4. The connecting rod 6 is a rectangular parallelepiped structure, which can prevent the connecting rod 6 from rotating in the connecting sleeve 4. The end surface of the connecting rod 6 located inside the connecting sleeve 4 is fixed with a fixing block 7, and the outer sleeve of the connecting rod 6 is connected with a fixing spring 8 for supporting the fixing block 7. The elastic force of the fixing spring 8 can be set according to actual use requirements. The end surface of the connecting rod 6 located outside the connecting sleeve 4 is welded with a pulling block 9. By inserting one end of the vent pipe 1 into the exhaust pipe of the liquid nitrogen gas-liquid separator, the fixing spring 8 supports the fixing block 7, so that the two fixing blocks 7 are both tightly attached to the outer wall of the exhaust pipe of the liquid nitrogen gas-liquid separator, so that the connection between the vent pipe 1 and the exhaust pipe of the liquid nitrogen gas-liquid separator can be quickly completed;

[0029] A telescopic hose 10 is fixed on the top of the vent pipe 1. The telescopic hose 10 can be made of a material resistant to ultra-low temperatures. An outlet pipe 11 for nitrogen discharge is fixed on the top of the telescopic hose 10. Two connecting blocks 12 are welded on the top of the vent pipe 1. A positioning block 14 fixedly connected to the outlet pipe 11 is movably connected to the outer wall of the connecting block 12. A connecting column 13 is fixed to the outer wall of the connecting block 12 on one side facing the positioning block 14. A rotating groove matching the connecting column 13 is provided in the positioning block 14. Moving grooves are provided on the outer walls around the connecting column 13. A supporting spring 15 is placed in the moving groove of the connecting column 13, and one side of the supporting spring 15 is provided with a connecting column 13. A limit block 16 is movable in the moving groove of 13, and a positioning pin 17 is fixed on the side of the limit block 16 away from the support spring 15. The position of the positioning pin 17 outside the connecting column 13 is a hemispherical structure. A plurality of positioning grooves matching the positioning pin 17 are provided in the positioning block 14. Through the rotatable telescopic hose 10, the angle of the air outlet pipe 11 can be flexibly adjusted according to the position of the nitrogen collecting device, and the staff does not need to adjust the position of the nitrogen collecting device, which is more flexible and convenient to use. At the same time, the support spring 15 supports the limit block 16, so that the positioning pin 17 is inserted into the positioning groove of the positioning block 14, thereby fixing the position of the air outlet pipe 11.

[0030] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The control method of the utility model is controlled by a controller, and the control circuit of the controller can be realized by simple programming by technicians in this field. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Working principle:

[0033] When the heater for the exhaust port of the liquid nitrogen gas-liquid separator is in use, the connecting rod 6 and the fixing block 7 are pulled outward by the pulling block 9, and the fixing block 7 squeezes the fixing spring 8, so that one end of the vent pipe 1 is inserted into the exhaust pipe of the liquid nitrogen gas-liquid separator, and the sealing ring 5 is tightly attached to the surface of the exhaust pipe of the liquid nitrogen gas-liquid separator. At the same time, the connecting sleeve 4 is sleeved on the outside of the exhaust pipe of the liquid nitrogen gas-liquid separator, and the pulling block 9 is released. The fixing spring 8 supports the fixing block 7, and the fixing block 7 is pushed to move, so that the two fixing blocks 7 are tightly attached to the outer wall of the exhaust pipe of the liquid nitrogen gas-liquid separator, thereby quickly completing the connection between the vent pipe 1 and the exhaust pipe of the liquid nitrogen gas-liquid separator, and the nitrogen liquid flows into the vent pipe 1 through the nitrogen gas-liquid separator exhaust pipe. According to the temperature at which the nitrogen needs to be heated, the corresponding number of electric heating tubes 3 are started to heat the nitrogen;

[0034] After the nitrogen is heated, it is discharged through the outlet pipe 11. Through the rotatable telescopic hose 10, the angle of the outlet pipe 11 can be flexibly adjusted according to the position of the nitrogen collecting device. After the position of the outlet pipe 11 is adjusted, the support spring 15 supports the limit block 16, so that the positioning pin 17 is inserted into the positioning groove of the positioning block 14 to fix the position of the outlet pipe 11.

[0035] Although the 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heater for the exhaust port of a liquid nitrogen gas-liquid separator, comprising a vent pipe (1) for nitrogen flow and a heating jacket (2) fixed to the outside of the vent pipe (1), characterized in that: The heating sleeve (2) is provided with a cavity, a plurality of electric heating tubes (3) are installed in the cavity of the heating sleeve (2), and a connecting sleeve (4) fixedly connected to the ventilation pipe (1) is fixed at the bottom of the heating sleeve (2); Guide grooves are provided on both side outer walls of the connecting sleeve (4), and a connecting rod (6) is movably connected in the guide groove of the connecting sleeve (4), a fixing block (7) is fixed to the end surface of the connecting rod (6) located inside the connecting sleeve (4), and a fixing spring (8) for supporting the fixing block (7) is sleeved on the outside of the connecting rod (6), a telescopic hose (10) is fixed to the top of the ventilation pipe (1), and an outlet pipe (11) for nitrogen discharge is fixed to the top of the telescopic hose (10).

2. A liquid nitrogen gas-liquid separator exhaust port heater according to claim 1, characterized in that: Two connection blocks (12) are fixed on the top of the ventilation pipe (1), and the outer wall of the connection block (12) is movably connected to a positioning block (14) fixedly connected to the air outlet pipe (11).

3. A liquid nitrogen gas-liquid separator exhaust port heater according to claim 2, characterized in that: A connecting column (13) is fixed to an outer wall of one side of the connecting block (12) facing the positioning block (14), and a rotation groove matching the connecting column (13) is provided in the positioning block (14).

4. A liquid nitrogen gas-liquid separator exhaust port heater according to claim 3, characterized in that: The outer walls of the connecting column (13) are all provided with movable grooves, a support spring (15) is placed in the movable groove of the connecting column (13), and a limit block (16) movable in the movable groove of the connecting column (13) is provided on one side of the support spring (15).

5. A liquid nitrogen gas-liquid separator exhaust port heater according to claim 4, characterized in that: A positioning pin (17) is fixed to a side of the limiting block (16) away from the supporting spring (15), and a plurality of positioning grooves matching the positioning pin (17) are provided in the positioning block (14).

6. The liquid nitrogen gas-liquid separator exhaust port heater according to claim 1, characterized in that: The outside of the ventilation pipe (1) is sleeved with a sealing ring (5) fixedly connected to the top plate of the connecting sleeve (4), and the end surface of the connecting rod (6) located outside the connecting sleeve (4) is fixed with a pulling block (9).

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