A kettle top fractional condensation reflux device for 1,2-hexanediol production

Abstract

The present application relates to the technical field of fractional condensation reflux for hexanediol production, and discloses a kettle top fractional condensation reflux device for 1,2-hexanediol production, which comprises a reaction kettle, a liquid inlet pipe is fixedly connected to the front side of the reaction kettle, a top cover is fixedly connected to the top of the reaction kettle, a discharge pipe is fixedly connected to the top of the top cover, a butt joint disc is fixedly connected to the outside of the discharge pipe, an inclined arc-shaped groove is formed in the inside of the butt joint disc, a clamping groove is formed in the inside of the butt joint disc, a guide groove is formed in the inside of the butt joint disc, an inclined clamping column is slidably connected to the inside of the butt joint disc, a clamping ring is fixedly connected to the outside of the inclined clamping column, an elastic assembly is arranged on the outside of the inclined clamping column, and a mounting disc is slidably connected to the outside of the inclined clamping column. In the present application, the pipeline can be quickly butt jointed and mounted, and reliable sealing can be ensured. When butt joint assembly is performed, the clamping ring can be circumferentially clamped by rotating the limiting disc to achieve anti-loose locking, no additional fasteners are needed throughout the process, the pipeline dismounting and mounting efficiency is greatly improved, and equipment maintenance is facilitated.

Description

Technical Field

[0001] This invention relates to the field of fractional reflux technology for hexanediol production, and more particularly to a reactor top fractional reflux device for 1,2-hexanediol production. Background Technology

[0002] 1,2-Hexanediol is a straight-chain aliphatic diol compound with two adjacent hydroxyl groups in its molecule. At room temperature and pressure, it is a colorless, transparent, viscous liquid with a slightly characteristic odor. It possesses excellent hygroscopicity and solvent compatibility, being miscible with water, ethanol, ether, and most organic solvents. It is chemically stable and does not readily oxidize or decompose under normal storage and usage conditions. It possesses both moisturizing and antibacterial properties, and exhibits extremely low irritation to skin and mucous membranes, minimal toxicity, and outstanding safety. Therefore, it is widely used in cosmetics and personal care products, often added as a humectant and preservative synergist. This enhances the product's moisturizing feel and long-lasting hydration while also helping to inhibit microbial growth, reducing the amount of traditional preservatives used and lowering the risk of product sensitization. In addition, 1,2-hexanediol can also be used as an organic solvent, plasticizer and organic synthesis intermediate in the fine chemical industry, such as resins, coatings, adhesives and pharmaceutical intermediates. With its mild and environmentally friendly properties and multiple functions, it has become a multifunctional chemical raw material with great application value in the daily chemical and industrial fields.

[0003] However, existing reflux condensation units on the reactor top for 1,2-hexanediol production typically require bolts and auxiliary tools for pipe connection and installation, which is time-consuming and labor-intensive. In actual assembly, operators must first precisely align the bolt holes on both flanges, then insert the bolts one by one and tighten the nuts with a wrench. The entire connection process is cumbersome and time-consuming. In situations involving high-altitude work on the reactor top or in confined spaces with compact equipment layouts, the limited operating space further increases the installation difficulty, significantly extending the time required for equipment assembly, maintenance, and disassembly, thus slowing down production commissioning and fault recovery.

[0004] Therefore, a top-of-bottle reflux device for the production of 1,2-hexanediol is proposed to address the above problems. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a reactor top condensation reflux device for the production of 1,2-hexanediol.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A reactor top condensation and reflux device for the production of 1,2-hexanediol includes a reactor, an inlet pipe fixedly connected to the front side of the reactor, a top cover fixedly connected to the top of the reactor, a discharge pipe fixedly connected to the top of the top cover, a docking plate fixedly connected to the outside of the discharge pipe, an inclined arc-shaped groove inside the docking plate, a retaining groove inside the docking plate, a guide groove inside the docking plate, a slidably connected inclined retaining post inside the docking plate, a retaining ring fixedly connected to the outside of the inclined retaining post, an elastic component provided outside the inclined retaining post, an installation plate slidably connected to the outside of the inclined retaining post, a limiting plate fixedly connected to one side of the inclined retaining post, a conveying pipe rotatably connected inside the installation plate, a limiting component provided inside the installation plate, a sealing component provided on one side of the discharge pipe, a condensation component provided on one side of the conveying pipe, and a fan-shaped rotating groove inside the docking plate. As a further description of the above technical solution: The elastic component includes a rotating ring, the inside of which is rotatably connected to the outside of the inclined plate pin, a positioning ring is slidably connected to the outside of the inclined plate pin, and a spring is sleeved on the outside of the inclined plate pin. As a further description of the above technical solution: The limiting component includes a limiting frame, the outside of which is fixedly connected to the inside of the mounting plate, and a limiting groove is formed inside the conveying pipe; As a further description of the above technical solution: The sealing assembly includes an outer sealing ring, one side of which is fixedly connected to the outside of the mounting plate. A sealing groove is provided inside the delivery pipe. An extrusion rod is fixedly connected to the outside of the outer sealing ring. An inner sealing ring is fixedly connected to one side of the discharge pipe. An extrusion ring is fixedly connected to one side of the docking plate. As a further description of the above technical solution: The condensation assembly includes a condenser, the input end of which is fixedly connected to the outside of the conveying pipe, and the output end of which is fixedly connected to a discharge pipe. As a further description of the above technical solution: The outer side of the inclined locking post is slidably connected to the inside of the locking groove, the outer side of the locking ring is slidably connected to the inside of the guide groove, and the outer side of the locking ring is rotatably connected to the inside of the fan-shaped rotating groove. As a further description of the above technical solution: One end of the spring is fixedly connected to the outside of the positioning ring, and the other end of the spring is fixedly connected to the outside of the mounting plate; As a further description of the above technical solution: The outer part of the inner sealing ring is slidably connected to the inside of the sealing groove, the inner part of the outer sealing ring is movably connected to the outside of the inner sealing ring, and the outer part of the extrusion rod is in contact with the outer part of the extrusion ring.

[0007] The present invention has the following beneficial effects: This invention enables rapid pipeline connection and installation while ensuring reliable sealing. During connection and assembly, rotating the mounting plate drives the inclined locking pin to slide circumferentially along the inclined arc groove within the connection plate. The inclined groove surface compresses the inclined locking pin axially, compressing the spring to store energy. When the inclined locking pin aligns with the groove, the spring releases its elastic force, pushing the locking pin to automatically engage and complete positioning. Simultaneously, the retaining ring enters the fan-shaped rotating groove. Rotating the limiting plate causes the retaining ring to engage circumferentially, achieving anti-loosening locking. No additional fasteners are required throughout the process, significantly improving pipeline assembly and disassembly efficiency and facilitating equipment maintenance. During the synchronous connection and locking process, the extrusion ring rotates with the extrusion rod, pushing the outer sealing ring to press against the connection surface to form an outer seal. At the same time, the inner sealing ring embeds into the sealing groove to form an inner seal. The dual sealing structure works simultaneously, effectively blocking the leakage path of gaseous materials and ensuring the airtightness and safety of production. Combined with the rotational constraints of the limiting frame and limiting groove, structural misalignment failure can be avoided, improving the operational stability and sealing durability of the device. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of a reactor top condensation and reflux device for the production of 1,2-hexanediol proposed in this invention. Figure 2 This is a schematic diagram of the discharge pipe structure of a reactor top condensation reflux device for the production of 1,2-hexanediol proposed in this invention. Figure 3 This is a schematic diagram of the limiting disk structure of a reactor top condensation and reflux device for the production of 1,2-hexanediol proposed in this invention. Figure 4 This is a schematic diagram of the extrusion ring structure of a reactor top condensation and reflux device for the production of 1,2-hexanediol proposed in this invention. Figure 5 This is a schematic diagram of the docking plate structure of a reactor top condensation and reflux device for the production of 1,2-hexanediol proposed in this invention. Figure 6 This is a schematic diagram of the mounting plate structure of a reactor top condensation reflux device for the production of 1,2-hexanediol proposed in this invention. Figure 7 This is a schematic diagram of the conveying pipe structure of a reactor top condensation reflux device for the production of 1,2-hexanediol proposed in this invention.

[0009] Legend: 1. Reactor; 2. Inlet pipe; 3. Top cover; 4. Discharge pipe; 5. Connecting plate; 6. Inclined arc groove; 7. Slot; 8. Guide groove; 9. Inclined retaining post; 10. Retaining ring; 11. Rotating ring; 12. Positioning ring; 13. Spring; 14. Mounting plate; 15. Limiting plate; 16. Conveying pipe; 17. Limiting frame; 18. Limiting groove; 19. Sealing groove; 20. Outer sealing ring; 21. Extrusion rod; 22. Fan-shaped rotating groove; 23. Inner sealing ring; 24. Extrusion ring; 25. Condenser; 26. Discharge pipe. Detailed Implementation

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] Reference Figures 1 to 3 This invention provides an embodiment of a reactor top condensation reflux device for the production of 1,2-hexanediol, comprising a reactor 1. The reactor 1 is used to hold the reactants for the production of 1,2-hexanediol, providing a sealed and stable space for the reaction process and ensuring stable and controllable reaction conditions. An inlet pipe 2 is fixedly connected to the front of the reactor 1, used to deliver the raw materials required for production into the reactor 1, achieving stable material feeding and ensuring a continuous supply of reactants. A top cover 3 is fixedly connected to the top of the reactor 1, used to seal the top of the reactor 1, preventing gaseous materials from overflowing from the top during the reaction, and providing a support foundation for the top piping structure. A discharge pipe 4 is fixedly connected to the top of the top cover 3, used to discharge the gaseous materials generated in the reactor 1 outwards. The material is conveyed to the subsequent condensation pipeline to provide a material conveying channel for the fractional condensation process. The discharge pipe 4 is fixedly connected to the outside of the docking plate 5. The docking plate 5 is used as the docking installation base on the side of the discharge pipe 4, supporting the various internal groove structures and providing a matching basis for the quick docking and locking of the pipeline. The docking plate 5 has an inclined arc groove 6 inside. The inclined arc groove 6 is used to cooperate with the inclined surface of the inclined plate 9. During the relative rotation, the inclined plate 9 is squeezed by the inclined groove surface to realize the axial retraction of the plate and the compression and energy storage of the spring 13, providing elasticity preparation for the subsequent locking. The docking plate 5 has a slot 7 inside. The slot 7 is used to accommodate the inserted inclined plate 9 and form axial and circumferential limits on the inclined plate 9, realizing the axial locking and fixing between the docking plate 5 and the mounting plate 14, and preventing the pipeline from axially loosening after docking. Reference Figures 3 to 5The connecting plate 5 has a guide groove 8 inside, and a sloping locking post 9 is slidably connected inside the connecting plate 5. The sloping locking post 9 is used as the core locking and actuating component. It achieves axial movement by cooperating with the inclined arc groove 6 through its own sloping structure. After locking into the locking groove 7, it completes the locking and fixing of the pipeline connection, realizing the quick assembly and disassembly of the pipeline. The outside of the sloping locking post 9 is slidably connected to the inside of the locking groove 7. A retaining ring 10 is fixedly connected to the outside of the sloping locking post 9. The retaining ring 10 is used to move synchronously with the sloping locking post 9. It can slide in the guide groove 8 to achieve guiding and limiting, and can also enter the fan-shaped rotating groove 22 to rotate to form circumferential locking, further enhancing the anti-loosening effect of the locking structure. The outside of the retaining ring 10 is slidably connected to the inside of the guide groove 8. An elastic component is provided on the outside of the sloping locking post 9. The elastic component is used to provide elastic driving force for the sloping locking post 9, realizing the automatic pop-out locking of the locking post. At the same time, it can also be used to lock the pipeline by spring. The compression adapts to the axial displacement during the connection process, ensuring that the snap-fit ​​structure has a certain elastic margin. The elastic component includes a rotating ring 11, which is used to reduce the frictional resistance during the rotation of the inclined snap-fit ​​9, making the circumferential rotation of the inclined snap-fit ​​9 smoother and less effort, and improving the convenience of the locking operation. The inside of the rotating ring 11 is rotatably connected to the outside of the inclined snap-fit ​​9. The outside of the inclined snap-fit ​​9 is slidably connected to a positioning ring 12, which is used to transmit the elastic force of the spring 13 and provide positioning support for the end of the spring 13, ensuring that the elastic force of the spring 13 can act stably and evenly on the inclined snap-fit ​​9, and avoiding the spring 13 from deflecting and failing. The outside of the inclined snap-fit ​​9 is fitted with a spring 13, which is used to store and release elastic force through its own elastic deformation. When the inclined snap-fit ​​9 retracts, it compresses and stores energy, and when aligned with the slot 7, it releases the elastic force to push the snap-fit ​​into place, achieving the effect of automatic snap-fit ​​locking. Reference Figures 4 to 6One end of spring 13 is fixedly connected to the outside of positioning ring 12, and the other end of spring 13 is fixedly connected to the outside of mounting plate 14. Mounting plate 14 is slidably connected to the outside of inclined plate 9. Mounting plate 14 is used as the docking mounting base on the side of conveying pipe 16, supporting inclined plate 9, elastic component and sealing component, etc. It cooperates with docking plate 5 to realize the quick docking and sealing of pipeline. Limiting plate 15 is fixedly connected to one side of inclined plate 9. Limiting plate 15 is used to limit the axial sliding stroke of inclined plate 9 to prevent inclined plate 9 from falling out of mounting plate 14. At the same time, it can be used as an operating component to drive inclined plate 9 to rotate circumferentially to realize the circumferential locking of retaining ring 10. Conveying pipe 16 is rotatably connected inside mounting plate 14. Conveying pipe 16 is used to transport the gaseous material discharged from discharge pipe 4 to the inside of condenser 25, providing a conveying channel for gaseous material, connecting reactor 1 and condensing component, and ensuring material flow in the fractionation process. Mounting plate 14 The internal part of the mounting plate 14 is equipped with a limiting component to limit the circumferential rotation of the mounting plate 14, prevent excessive twisting of the mounting plate 14, ensure the stability of the pipeline connection, and prevent the failure of the sealing structure caused by pipeline twisting. The limiting component includes a limiting frame 17, which is used as a fixed support for the limiting structure. It is inserted into the limiting groove 18 to form a rotation limit and constrain the rotation range of the mounting plate 14. The limiting frame 17 is externally fixedly connected to the inside of the mounting plate 14. The inside of the conveying pipe 16 is provided with a limiting groove 18, which is used to cooperate with the limiting frame 17. The rotation angle of the mounting plate 14 is limited by the stroke range of the groove, ensuring that the mounting plate 14 is always within a controllable range during rotation. A sealing component is provided on one side of the discharge pipe 4. The sealing component is used to form a sealing protection at the pipeline connection, block the leakage path of gaseous materials, ensure the airtightness of the connected pipeline, and prevent material leakage from affecting production efficiency and production safety. Reference Figures 5 to 7The sealing assembly includes an outer sealing ring 20, which forms a sealing barrier on the outside of the mating surface. After being compressed by the extrusion rod 21, it fits tightly against the mating surface to achieve external sealing protection and prevent material leakage. One side of the outer sealing ring 20 is fixedly connected to the outside of the mounting plate 14. A sealing groove 19 is provided inside the conveying pipe 16 to accommodate the inner sealing ring 23, providing space for the inner sealing ring 23 to be installed and sealed, ensuring that the inner sealing ring 23 can be stably embedded to form an inner seal. The extrusion rod 21 is fixedly connected to the outside of the outer sealing ring 20, and the extrusion rod 21 is used to transmit the extrusion of the extrusion ring 24. The force converts the circumferential force during the rotation into axial compressive force, pushing the outer sealing ring 20 to deform and tightly adhere to the sealing surface, improving the sealing effect. An inner sealing ring 23 is fixedly connected to one side of the discharge pipe 4. The inner sealing ring 23 is used to embed into the sealing groove 19, forming a sealing barrier on the inner side of the pipe joint. It cooperates with the outer sealing ring 20 to form a double sealing structure, comprehensively improving the sealing performance of the joint. The inner side of the outer sealing ring 20 is movably connected to the outer side of the inner sealing ring 23, and the outer side of the inner sealing ring 23 is slidably connected to the inner side of the sealing groove 19. A compression ring 24 is fixedly connected to one side of the docking plate 5. The compression ring 24 is used to... During the docking rotation, the extrusion rod 21 is squeezed, and the stroke of the relative rotation generates extrusion force, driving the outer sealing ring 20 to press the sealing surface tightly, thus achieving synchronous completion of docking and sealing. The outside of the extrusion rod 21 is in contact with the outside of the extrusion ring 24. A condensation assembly is provided on one side of the conveying pipe 16. The condensation assembly is used to condense and condense the gaseous material generated in the reaction, so that the gaseous material is cooled and liquefied, realizing the functions of condensation reflux and product collection in the production of 1,2-hexanediol. The condensation assembly includes a condenser 25, which provides a place for condensation and heat exchange for the gaseous material. Through heat exchange and cooling, the gaseous material is condensed and liquefied. After completing the fractional condensation process, the input end of the condenser 25 is fixedly connected to the outside of the conveying pipe 16, and the output end of the condenser 25 is fixedly connected to the discharge pipe 26. The discharge pipe 26 is used to discharge the condensed liquid phase material to the outside, realize the collection or reflux conveying of the condensed product, and ensure the continuous operation of the production process. A fan-shaped rotating groove 22 is opened inside the docking plate 5. The fan-shaped rotating groove 22 is used to provide space for the retaining ring 10 to rotate circumferentially. At the same time, the end face of the groove forms a circumferential limit, so that the retaining ring 10 is locked in the groove after rotation, further strengthening the locking and anti-loosening effect. The outside of the retaining ring 10 is rotatably connected to the inside of the fan-shaped rotating groove 22.

[0012] Working principle: When this reactor top condensation and reflux device is working, the production material is sent into the reactor 1 through the inlet pipe 2 to participate in the reaction. The top cover 3 is sealed and fixed at the top of the reactor 1. The gaseous material generated during the reaction gathers upward and is discharged outward through the discharge pipe 4 at the top of the top cover 3 to enter the subsequent condensation and reflux process. During docking and assembly, the mounting plate 14 at the end of the conveying pipe 16 is first axially aligned with the docking plate 5 at the end of the discharge pipe 4, so that the front end of the inclined clamping post 9 is aligned with the inlet of the inclined arc groove 6, and the retaining ring 10 is aligned with the inlet of the guide groove 8. Then, the mounting plate 14 is rotated, which drives the inclined clamping post 9 along the inclined arc groove 6. As the inclined groove gradually changes in depth, the inclined locking post 9 is squeezed by the inclined surface and axially retracts towards the mounting plate 14, simultaneously compressing the spring 13 sleeved on the outside of the inclined locking post 9. The positioning ring 12 moves synchronously with the locking post and transmits the elastic force of the spring 13. During this process, the retaining ring 10 slides synchronously towards the guide groove 8. When the inclined locking post 9 slides to the end of the inclined arc groove 6, the front end of the post is just aligned with the retaining groove 7. At this time, the compressed spring 13 releases its elastic force, pushing the inclined locking post 9 forward and locking it into the retaining groove 7. At the same time, the retaining ring 10 enters the fan-shaped rotating groove 22 through the end of the guide groove 8. Then the limiting plate 15 is rotated. The inclined locking post 9 drives the retaining ring 10 to rotate circumferentially within the fan-shaped rotating groove 22, causing the retaining ring 10 to engage at the limiting end face of the fan-shaped rotating groove 22, thus completing the rapid locking of the mating plate 5 and the mounting plate 14. The limiting plate 15 can also limit the axial travel of the inclined locking post 9, preventing it from coming out of the mounting plate 14. During the synchronous rotation of the mating plate, the compression ring 24 on the side of the mating plate 5 gradually compresses the compression rod 21 on the side of the mounting plate 14 with the relative rotation. After being stressed, the compression rod 21 presses the outer sealing ring 20 inward, so that the outer sealing ring 20 tightly fits the mating surface to form an outer seal. At the same time, the inner sealing ring 23 at the end of the discharge pipe 4 is embedded in the discharge pipe. Inside the sealing groove 19 at the end of the feed pipe 16, the outer sealing ring 20 is fitted outside the inner sealing ring 23, forming a double sealing structure that completely blocks the leakage path of the gaseous material. After the seal is locked, the gaseous material is continuously fed into the condenser 25 through the discharge pipe 4 and the feed pipe 16 to complete the fractional condensation and condensation. The condensed material is discharged through the discharge pipe 26 to realize fractional condensation reflux and product collection. The limiting frame 17 fixed on the inner wall of the mounting plate 14 is engaged in the limiting groove 18 on the outer wall of the feed pipe 16, which can limit the circumferential rotation of the mounting plate 14, prevent the pipeline from twisting and damaging the sealing structure, and ensure the stability of the device throughout its operation.

[0013] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reactor top reflux device for the production of 1,2-hexanediol, comprising a reactor (1), characterized in that: A liquid inlet pipe (2) is fixedly connected to the front side of the reactor (1). A top cover (3) is fixedly connected to the top of the reactor (1). A discharge pipe (4) is fixedly connected to the top of the top cover (3). A docking plate (5) is fixedly connected to the outside of the discharge pipe (4). An inclined arc groove (6) is opened inside the docking plate (5). A slot (7) is opened inside the docking plate (5). A guide groove (8) is opened inside the docking plate (5). An inclined retaining post (9) is slidably connected inside the docking plate (5). The inclined retaining post (9) is slidably connected to the outside of the inclined retaining post (9). A retaining ring (10) is fixedly connected to the part. An elastic component is provided on the outside of the inclined retaining post (9). An installation plate (14) is slidably connected to the outside of the inclined retaining post (9). A limiting plate (15) is fixedly connected to one side of the inclined retaining post (9). A conveying pipe (16) is rotatably connected inside the installation plate (14). A limiting component is provided inside the installation plate (14). A sealing component is provided on one side of the discharge pipe (4). A condensation component is provided on one side of the conveying pipe (16). A fan-shaped rotating groove (22) is opened inside the docking plate (5).

2. The reactor top reflux device for 1,2-hexanediol production according to claim 1, characterized in that: The elastic component includes a rotating ring (11), the inside of which is rotatably connected to the outside of the inclined plate (9), a positioning ring (12) is slidably connected to the outside of the inclined plate (9), and a spring (13) is sleeved on the outside of the inclined plate (9).

3. The reactor top reflux device for 1,2-hexanediol production according to claim 1, characterized in that: The limiting component includes a limiting frame (17), which is externally fixedly connected to the inside of the mounting plate (14), and a limiting groove (18) is formed inside the delivery pipe (16).

4. The reactor top reflux device for 1,2-hexanediol production according to claim 1, characterized in that: The sealing assembly includes an outer sealing ring (20), one side of which is fixedly connected to the outside of the mounting plate (14). A sealing groove (19) is provided inside the delivery pipe (16). A squeezing rod (21) is fixedly connected to the outside of the outer sealing ring (20). An inner sealing ring (23) is fixedly connected to one side of the discharge pipe (4). A squeezing ring (24) is fixedly connected to one side of the docking plate (5).

5. The reactor top reflux device for 1,2-hexanediol production according to claim 1, characterized in that: The condensation assembly includes a condenser (25), the input end of which is fixedly connected to the outside of the conveying pipe (16), and the output end of which is fixedly connected to a discharge pipe (26).

6. The reactor top reflux device for 1,2-hexanediol production according to claim 1, characterized in that: The external of the inclined pin (9) is slidably connected to the inside of the slot (7), the external of the ring (10) is slidably connected to the inside of the guide groove (8), and the external of the ring (10) is rotatably connected to the inside of the fan-shaped rotating groove (22).

7. A reactor top reflux device for 1,2-hexanediol production according to claim 2, characterized in that: One end of the spring (13) is fixedly connected to the outside of the positioning ring (12), and the other end of the spring (13) is fixedly connected to the outside of the mounting plate (14).

8. The reactor top reflux device for 1,2-hexanediol production according to claim 4, characterized in that: The outer side of the inner sealing ring (23) is slidably connected to the inside of the sealing groove (19), the inner side of the outer sealing ring (20) is movably connected to the outside of the inner sealing ring (23), and the outer side of the extrusion rod (21) is in contact with the outer side of the extrusion ring (24).

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