Nitrogen purging device for diketogluconic acid methyl esterification reaction material receiving port

By designing a nitrogen purge device including storage, purge and sealing mechanism, the problems of poor purging effect and inconvenient sealing of existing devices on the bottle mouth are solved, and the practicality of the device and the purity of the reactants are improved.

CN222591875UActive Publication Date: 2025-03-11ZHUCHENG HUAYUAN BIOENGINEERING CO LTD
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Patent Information

Application Number
CN202421417212.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-20
Publication Date
2025-03-11
Estimated Expiration
2034-06-20

AI Technical Summary

Technical Problem

The existing nitrogen purge device has a simple structure, poor purge effect on the bottle mouth, and is inconvenient to seal the bottle mouth in a nitrogen environment, resulting in poor practicality.

Method used

A nitrogen purge device for diketone gluconate methyl esterification reaction feed port including a storage mechanism, a purge mechanism and a sealing mechanism is designed. By placing the feed bottle into the storage mechanism, the reactants are discharged into the feed bottle and blown in nitrogen to reduce contact with the reactants and air; then the bottle opening is sealed by using the sealing mechanism.

Benefits of technology

It improves the purge effect and sealing performance of the equipment on the bottle mouth, enhances the practicality of the equipment, reduces the contact between reactants and air, and thus improves the purity of the reactants.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of nitrogen purging, in particular to a nitrogen purging device for a diketogluconic acid methyl esterification reaction material receiving port, which is characterized in that a material receiving bottle is placed in a storage mechanism, reactants are discharged into the material receiving bottle through a purging mechanism, and meanwhile, nitrogen is blown to the opening of the material receiving bottle, so that the contact between the reactants and air is reduced, and the reaction efficiency is improved. Then the material receiving bottle opening is sealed through the sealing mechanism, so that the practicability of the equipment is improved; comprising a storage mechanism; the device further comprises a blowing mechanism and a sealing mechanism, and the blowing mechanism and the sealing mechanism are both installed on the storage mechanism. The storage mechanism is used for fixing the material receiving bottle, the blowing mechanism is used for carrying out nitrogen blowing on the opening of the material receiving bottle, and the sealing mechanism is used for sealing the opening of the material receiving bottle.
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Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen purging, in particular to a nitrogen purging device for a material receiving port of a diketogluconate methyl esterification reaction. Background Art

[0002] Sodium isoVC is produced by the intermediate diketogluconic acid first undergoing a methyl esterification reaction with methanol in a methanol medium and then undergoing a conversion reaction with sodium carbonate to obtain a crude product, which is then dissolved, crystallized, refined and dried. After the methyl esterification reaction, the reactants need to be bottled. During the bottling process, the reactants are prone to react with oxygen to produce more by-products, which affect the purity of the reactants.

[0003] In order to ensure the purity of the reactants, nitrogen purging can generally be achieved through a nitrogen purging device disclosed in the utility model patent with publication number CN218422733U and a nitrogen purging device disclosed in the utility model patent with publication number CN203838171U.

[0004] However, it was found during use that the existing nitrogen purging device has a relatively simple structure, has a poor purging effect on the bottle mouth, and is inconvenient to seal the bottle mouth under a nitrogen environment, resulting in poor practicality. Therefore, a nitrogen purging device for the material receiving port of the diketogluconate methyl esterification reaction is urgently needed to improve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a receiving bottle placed in a storage mechanism, the reactants are discharged into the receiving bottle through a purge mechanism, and nitrogen is blown to the receiving bottle mouth to reduce the contact between the reactants and the air, and then the receiving bottle mouth is sealed by a sealing mechanism, thereby improving the practicality of the equipment. A nitrogen purge device for the receiving bottle mouth of diketopgluconate methyl esterification reaction is provided.

[0006] The utility model discloses a nitrogen purge device for a diketogluconic acid methyl esterification reaction material receiving port, comprising a storage mechanism, a purge mechanism and a sealing mechanism, both of which are installed on the storage mechanism;

[0007] The storage mechanism fixes the receiving bottle, the purge mechanism purges the opening of the receiving bottle with nitrogen, and the sealing mechanism seals the opening of the receiving bottle;

[0008] The receiving bottle is placed in the storage mechanism, and the reactants are discharged into the receiving bottle through the purge mechanism. At the same time, nitrogen is blown to the mouth of the receiving bottle to reduce the contact between the reactants and the air. The mouth of the receiving bottle is then sealed through the sealing mechanism, thereby improving the practicability of the equipment.

[0009] Preferably, the storage mechanism includes a storage box, an exhaust fan, a first electric cylinder, a sealing cover and a moving mechanism, the exhaust fan and the first electric cylinder are both installed on the storage box, the sealing cover is installed on the top of the first electric cylinder, and the moving mechanism is installed inside the storage box; the receiving bottle is placed on the moving mechanism, the sealing cover is covered on the top of the storage box by contracting the first electric cylinder, and then nitrogen is sprayed to the mouth of the receiving bottle, and at the same time, excess air in the storage box is discharged by the exhaust fan. After the receiving bottle is filled, the position of the receiving bottle is adjusted by the moving mechanism, and then the mouth of the receiving bottle is sealed by the sealing mechanism, thereby improving the practicability of the equipment.

[0010] Preferably, the moving mechanism includes a slide rail, a rack, a slider, a first motor, a gear and a first electric chuck, the bottom end of the slide rail is connected to the bottom end of the storage box, the rack is installed on the top end of the slide rail, the slider is slidably installed on the slide rail, the first motor is installed on the slider, the gear is installed on the output shaft of the first motor, and the bottom end of the gear is meshingly connected with the rack, and the first electric chuck is installed on the top end of the slider; the receiving bottle is placed on the first electric chuck, the receiving bottle is clamped by the first electric chuck, and then the first motor is turned on, and the gear and rack are meshed to transmit the transmission, so that the slider slides on the slide rail, and the position of the receiving bottle is adjusted, thereby improving the practicability of the equipment.

[0011] Preferably, the purge mechanism includes an exhaust pipe, an air jet pipe, a plurality of nozzles, a first solenoid valve, a discharge pipe, and a second solenoid valve. The exhaust pipe is rotatably mounted on the top of the sealing cover, the bottom end of the exhaust pipe extends to the bottom of the sealing cover, and a chamber is provided in the side wall of the exhaust pipe. The top end of the air jet pipe is connected to the bottom end of the exhaust pipe, the plurality of nozzles are obliquely mounted on the bottom end of the air jet pipe, the first solenoid valve is rotatably mounted on the exhaust pipe through a sealing ring, and the first solenoid valve is communicated with the chamber of the exhaust pipe, the discharge pipe is rotatably mounted in the middle of the exhaust pipe, and the discharge pipe The bottom end of the nozzle extends to the bottom of the injection pipe, and the second solenoid valve is installed at the top of the discharge pipe; the second solenoid valve is connected to the discharge pipe, and the first solenoid valve is connected to the nitrogen source. By opening the first solenoid valve, the nitrogen is discharged into the exhaust pipe, and then the nitrogen is sprayed into the receiving bottle through multiple groups of nozzles to squeeze out the air in the receiving bottle. The impact force generated when the nitrogen is sprayed out by the multiple groups of nozzles causes the exhaust pipe to rotate, and then the second solenoid valve is opened to discharge the reactant into the discharge pipe, and the reactant is discharged into the receiving bottle through the discharge pipe, thereby improving the practicability of the equipment.

[0012] Preferably, the sealing mechanism includes a second electric cylinder, a second electric chuck, a rubber sleeve and a conveying mechanism, the second electric cylinder is installed at the bottom end of the sealing cover, the second electric chuck and the rubber sleeve are both installed at the bottom end of the second electric cylinder, and the second electric chuck is located in the middle of the rubber sleeve, and the conveying mechanism is installed on the sealing cover; the sealing cover is clamped by the second electric chuck, and then the sealing cover is inserted into the receiving bottle mouth by extending the second electric cylinder, and then the wax liquid is discharged into the rubber sleeve by the conveying mechanism, and the wax liquid is bound by the rubber sleeve. After the wax liquid solidifies, the second electric chuck opens to open the rubber sleeve, and then the second electric cylinder contracts to reset the second electric chuck, thereby improving the practicability of the equipment.

[0013] Preferably, the conveying mechanism includes a heating box, a second motor, a feed valve, a boost pump, a stirring shaft and a third solenoid valve. The heating box is installed at the top of the sealing cover, the second motor, the feed valve and the boost pump are all installed at the top of the heating box, and the exhaust port of the boost pump is communicated with the interior of the heating box, the stirring shaft is installed on the output shaft of the second motor, and the bottom end of the stirring shaft extends to the interior of the heating box, the third solenoid valve is installed at the bottom end of the heating box, and the bottom end of the third solenoid valve is communicated with the interior of the rubber sleeve through a hose; the wax liquid is discharged into the heating box through the feed valve, the wax liquid is heated by the heating box, and the second motor is turned on to make the stirring shaft stir the wax liquid in the heating box to keep the wax liquid in a flowing state, and then the air is discharged into the heating box through the boost pump to pressurize the interior of the heating box, and then the third solenoid valve is opened to discharge the wax liquid into the rubber sleeve, and the feeding bottle mouth is sealed, thereby improving the practicality of the equipment.

[0014] Preferably, a plurality of suction cups are provided at the bottom of the storage box; the storage box is adsorbed on a desktop or work surface by the plurality of suction cups, thereby improving the stability of the equipment.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the receiving bottle is placed in the storage mechanism, the reactants are discharged into the receiving bottle through the purge mechanism, and nitrogen is blown to the receiving bottle mouth at the same time to reduce the contact between the reactants and the air, and then the receiving bottle mouth is sealed by the sealing mechanism, thereby improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0017] Figure 2 It is a front view structural schematic diagram of the utility model;

[0018] Figure 3 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 4 It is a schematic diagram of the axonometric cross-section structure of the utility model;

[0020] Figure 5 It is a front view cross-sectional enlarged structural schematic diagram of the purge mechanism of the utility model.

[0021] Markings in the attached drawings: 1. Storage box; 2. Exhaust fan; 3. First electric cylinder; 4. Sealing cover; 5. Slide rail; 6. Rack; 7. Slider; 8. First motor; 9. Gear; 10. First electric chuck; 11. Exhaust pipe; 12. Jet pipe; 13. Nozzle; 14. First solenoid valve; 15. Discharge pipe; 16. Second solenoid valve; 17. Second electric cylinder; 18. Second electric chuck; 19. Rubber sleeve; 20. Heating box; 21. Second motor; 22. Feed valve; 23. Booster pump; 24. Stirring shaft; 25. Third solenoid valve; 26. Suction cup. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0023] It includes a storage mechanism; it also includes a purge mechanism and a sealing mechanism, and the purge mechanism and the sealing mechanism are both installed on the storage mechanism;

[0024] The storage mechanism fixes the receiving bottle, the purge mechanism purges the opening of the receiving bottle with nitrogen, and the sealing mechanism seals the opening of the receiving bottle;

[0025] The storage mechanism includes a storage box 1, an exhaust fan 2, a first electric cylinder 3, a sealing cover 4 and a moving mechanism. The exhaust fan 2 and the first electric cylinder 3 are both installed on the storage box 1, the sealing cover 4 is installed on the top of the first electric cylinder 3, and the moving mechanism is installed inside the storage box 1;

[0026] The moving mechanism includes a slide rail 5, a rack 6, a slider 7, a first motor 8, a gear 9 and a first electric chuck 10. The bottom end of the slide rail 5 is connected to the bottom end of the storage box 1, the rack 6 is installed on the top end of the slide rail 5, the slider 7 is slidably installed on the slide rail 5, the first motor 8 is installed on the slider 7, the gear 9 is installed on the output shaft of the first motor 8, and the bottom end of the gear 9 is meshed with the rack 6, and the first electric chuck 10 is installed on the top end of the slider 7;

[0027] The purge mechanism includes an exhaust pipe 11, an air jet pipe 12, a plurality of nozzles 13, a first solenoid valve 14, a discharge pipe 15 and a second solenoid valve 16. The exhaust pipe 11 is rotatably mounted on the top of the sealing cover 4, the bottom of the exhaust pipe 11 extends to the bottom of the sealing cover 4, and a chamber is provided in the side wall of the exhaust pipe 11. The top of the air jet pipe 12 is connected to the bottom of the exhaust pipe 11, the plurality of nozzles 13 are obliquely mounted on the bottom of the air jet pipe 12, the first solenoid valve 14 is rotatably mounted on the exhaust pipe 11 through a sealing ring, and the first solenoid valve 14 is communicated with the chamber of the exhaust pipe 11, the discharge pipe 15 is rotatably mounted in the middle of the exhaust pipe 11, and the bottom of the discharge pipe 15 extends to the bottom of the air jet pipe 12, and the second solenoid valve 16 is mounted on the top of the discharge pipe 15;

[0028] The receiving bottle is placed on the first electric chuck 10, and the receiving bottle is clamped by the first electric chuck 10. Then, the first motor 8 is turned on, and the gear 9 is meshed with the rack 6 to transmit the sliding block 7 to slide on the slide rail 5, and the position of the receiving bottle is adjusted. The second solenoid valve 16 is connected to the discharge pipe, and the first solenoid valve 14 is connected to the nitrogen source. The nitrogen is discharged into the exhaust pipe 11 by opening the first solenoid valve 14, and then the nitrogen is sprayed into the receiving bottle through multiple groups of nozzles 13 to squeeze out the air in the receiving bottle. The exhaust pipe 11 is rotated by the impact force generated when the nitrogen is sprayed out by the multiple groups of nozzles 13, and then the second solenoid valve 16 is opened to discharge the reactants into the discharge pipe 15, and the reactants are discharged into the receiving bottle through the discharge pipe 15, thereby improving the practicability of the equipment. Example 2

[0029] like Figures 1 to 5 As shown, it includes a storage mechanism; it also includes a purge mechanism and a sealing mechanism, and the purge mechanism and the sealing mechanism are both installed on the storage mechanism;

[0030] The storage mechanism fixes the receiving bottle, the purge mechanism purges the opening of the receiving bottle with nitrogen, and the sealing mechanism seals the opening of the receiving bottle;

[0031] The storage mechanism includes a storage box 1, an exhaust fan 2, a first electric cylinder 3, a sealing cover 4 and a moving mechanism. The exhaust fan 2 and the first electric cylinder 3 are both installed on the storage box 1, the sealing cover 4 is installed on the top of the first electric cylinder 3, and the moving mechanism is installed inside the storage box 1;

[0032] The moving mechanism includes a slide rail 5, a rack 6, a slider 7, a first motor 8, a gear 9 and a first electric chuck 10. The bottom end of the slide rail 5 is connected to the bottom end of the storage box 1, the rack 6 is installed on the top end of the slide rail 5, the slider 7 is slidably installed on the slide rail 5, the first motor 8 is installed on the slider 7, the gear 9 is installed on the output shaft of the first motor 8, and the bottom end of the gear 9 is meshed with the rack 6, and the first electric chuck 10 is installed on the top end of the slider 7;

[0033] The purge mechanism includes an exhaust pipe 11, an air jet pipe 12, a plurality of nozzles 13, a first solenoid valve 14, a discharge pipe 15 and a second solenoid valve 16. The exhaust pipe 11 is rotatably mounted on the top of the sealing cover 4, the bottom of the exhaust pipe 11 extends to the bottom of the sealing cover 4, and a chamber is provided in the side wall of the exhaust pipe 11. The top of the air jet pipe 12 is connected to the bottom of the exhaust pipe 11, the plurality of nozzles 13 are obliquely mounted on the bottom of the air jet pipe 12, the first solenoid valve 14 is rotatably mounted on the exhaust pipe 11 through a sealing ring, and the first solenoid valve 14 is communicated with the chamber of the exhaust pipe 11, the discharge pipe 15 is rotatably mounted in the middle of the exhaust pipe 11, and the bottom of the discharge pipe 15 extends to the bottom of the air jet pipe 12, and the second solenoid valve 16 is mounted on the top of the discharge pipe 15;

[0034] The sealing mechanism includes a second electric cylinder 17, a second electric chuck 18, a rubber sleeve 19 and a conveying mechanism. The second electric cylinder 17 is installed at the bottom end of the sealing cover 4. The second electric chuck 18 and the rubber sleeve 19 are both installed at the bottom end of the second electric cylinder 17, and the second electric chuck 18 is located in the middle of the rubber sleeve 19. The conveying mechanism is installed on the sealing cover 4.

[0035] The conveying mechanism includes a heating box 20, a second motor 21, a feed valve 22, a booster pump 23, a stirring shaft 24 and a third solenoid valve 25. The heating box 20 is installed at the top of the sealing cover 4. The second motor 21, the feed valve 22 and the booster pump 23 are all installed at the top of the heating box 20, and the exhaust port of the booster pump 23 is communicated with the interior of the heating box 20. The stirring shaft 24 is installed on the output shaft of the second motor 21, and the bottom end of the stirring shaft 24 extends to the interior of the heating box 20. The third solenoid valve 25 is installed at the bottom end of the heating box 20, and the bottom end of the third solenoid valve 25 is communicated with the interior of the rubber sleeve 19 through a hose.

[0036] The bottom end of the storage box 1 is provided with a plurality of groups of suction cups 26;

[0037] The receiving bottle is placed on the first electric chuck 10, and the receiving bottle is clamped by the first electric chuck 10. Then, the first motor 8 is turned on, and the gear 9 is meshed with the rack 6 to transmit the sliding block 7 to slide on the slide rail 5, and the position of the receiving bottle is adjusted. The second solenoid valve 16 is connected to the discharge pipe, and the first solenoid valve 14 is connected to the nitrogen source. The nitrogen is discharged into the exhaust pipe 11 by opening the first solenoid valve 14, and then the nitrogen is sprayed into the receiving bottle through the multiple groups of nozzles 13 to squeeze out the air in the receiving bottle. The exhaust pipe 11 is rotated by the impact force generated when the nitrogen is sprayed out by the multiple groups of nozzles 13, and then the second solenoid valve 16 is opened to discharge the reactants into the discharge pipe 15, and the reactants are discharged into the receiving bottle through the discharge pipe 15, and then the receiving bottle is moved to the bottom of the second electric chuck 18, and the sealing cover is clamped by the second electric chuck 18. Tighten, then extend the second electric cylinder 17 to insert the sealing cover into the receiving bottle mouth, then heat the wax liquid through the heating box 20, and turn on the second motor 21 to make the stirring shaft 24 stir the wax liquid in the heating box 20 to keep the wax liquid flowing, then discharge air into the heating box 20 through the booster pump 23 to pressurize the interior of the heating box 20, and then open the third solenoid valve 25 to discharge the wax liquid into the rubber sleeve 19, and restrain the wax liquid through the rubber sleeve 19, and at the same time continue to spray nitrogen through multiple groups of nozzles 13, and continue to run through the exhaust fan 2 to make the nitrogen float to the right, and the low temperature generated by the nitrogen makes the wax liquid in the rubber sleeve 19 solidify quickly, and then the second electric chuck 18 opens to hold the rubber sleeve 19 open, and then the second electric cylinder 17 contracts to reset the second electric chuck 18, thereby improving the practicability of the equipment.

[0038] The nitrogen gas is low-temperature nitrogen gas; the exhaust fan 2, the first electric cylinder 3, the first motor 8, the first electric chuck 10, the first solenoid valve 14, the second solenoid valve 16, the second electric cylinder 17, the second electric chuck 18, the heating box 20, the second motor 21, the booster pump 23 and the third solenoid valve 25 of the nitrogen purge device for the material receiving port of the diketogluconate methyl esterification reaction of the utility model are purchased on the market, and the technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative labor.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A nitrogen purge device for a diketogluconic acid methyl esterification reaction inlet, comprising a storage mechanism; characterized in that: It also includes a purge mechanism and a sealing mechanism, both of which are installed on the storage mechanism; The storage mechanism fixes the receiving bottle, the purging mechanism purges the opening of the receiving bottle with nitrogen, and the sealing mechanism seals the opening of the receiving bottle.

2. A nitrogen purge device for a diketogluconate methyl esterification reaction inlet as claimed in claim 1, characterized in that: The storage mechanism comprises a storage box (1), an exhaust fan (2), a first electric cylinder (3), a sealing cover (4) and a moving mechanism. The exhaust fan (2) and the first electric cylinder (3) are both mounted on the storage box (1), the sealing cover (4) is mounted on the top of the first electric cylinder (3), and the moving mechanism is mounted inside the storage box (1).

3. A nitrogen purge device for a diketogluconate methyl esterification reaction material receiving port as claimed in claim 2, characterized in that: The moving mechanism comprises a slide rail (5), a rack (6), a slider (7), a first motor (8), a gear (9) and a first electric chuck (10); the bottom end of the slide rail (5) is connected to the bottom end of the storage box (1); the rack (6) is mounted on the top end of the slide rail (5); the slider (7) is slidably mounted on the slide rail (5); the first motor (8) is mounted on the slider (7); the gear (9) is mounted on the output shaft of the first motor (8); the bottom end of the gear (9) is meshedly connected to the rack (6); and the first electric chuck (10) is mounted on the top end of the slider (7).

4. A nitrogen purge device for a diketogluconate methyl esterification reaction inlet as claimed in claim 2, characterized in that: The purging mechanism comprises an exhaust pipe (11), an air jet pipe (12), a plurality of nozzles (13), a first solenoid valve (14), a discharge pipe (15) and a second solenoid valve (16); the exhaust pipe (11) is rotatably mounted on the top of a sealing cover (4); the bottom of the exhaust pipe (11) extends below the sealing cover (4); a chamber is provided in a side wall of the exhaust pipe (11); the top of the air jet pipe (12) is connected to the bottom of the exhaust pipe (11); the plurality of nozzles (13) are obliquely mounted on the bottom of the air jet pipe (12); the first solenoid valve (14) is rotatably mounted on the exhaust pipe (11) via a sealing ring; the first solenoid valve (14) is communicated with the chamber of the exhaust pipe (11); the discharge pipe (15) is rotatably mounted in the middle of the exhaust pipe (11); the bottom of the discharge pipe (15) extends below the air jet pipe (12); and the second solenoid valve (16) is mounted on the top of the discharge pipe (15).

5. A nitrogen purge device for a diketogluconic acid methyl esterification reaction material receiving port as claimed in claim 2, characterized in that: The sealing mechanism comprises a second electric cylinder (17), a second electric chuck (18), a rubber sleeve (19) and a conveying mechanism, wherein the second electric cylinder (17) is mounted on the bottom end of the sealing cover (4), the second electric chuck (18) and the rubber sleeve (19) are both mounted on the bottom end of the second electric cylinder (17), and the second electric chuck (18) is located in the middle of the rubber sleeve (19), and the conveying mechanism is mounted on the sealing cover (4).

6. A nitrogen purge device for a diketogluconic acid methyl esterification reaction inlet as claimed in claim 5, characterized in that: The conveying mechanism comprises a heating box (20), a second motor (21), a feed valve (22), a booster pump (23), a stirring shaft (24) and a third solenoid valve (25); the heating box (20) is mounted on the top of the sealing cover (4); the second motor (21), the feed valve (22) and the booster pump (23) are all mounted on the top of the heating box (20); an exhaust port of the booster pump (23) is communicated with the interior of the heating box (20); the stirring shaft (24) is mounted on the output shaft of the second motor (21); the bottom end of the stirring shaft (24) extends to the interior of the heating box (20); the third solenoid valve (25) is mounted on the bottom end of the heating box (20); and the bottom end of the third solenoid valve (25) is communicated with the interior of the rubber sleeve (19) through a hose.

7. A nitrogen purge device for a diketogluconate methyl esterification reaction inlet as claimed in claim 2, characterized in that: A plurality of groups of suction cups (26) are arranged at the bottom end of the storage box (1).

Citation Information

Patent Citations

  • Nitrogen purging device

    CN203838171U

  • Nitrogen purging device

    CN218422733U