A purification apparatus for sevoflurane processing
By designing purification devices for cleaning and moving components, the problem of raw material accumulation on the inner wall of the reactor in the heptafluoroane synthesis process was solved, achieving more efficient mixing and cleaning, and improving product purity and yield.
Patent Information
- Application Number
- CN202520834716.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-04-29
AI Technical Summary
In the existing heptafluoroane synthesis process, the centrifugal force caused by the high-speed rotation of the agitator causes the raw materials to accumulate on the inner wall of the reactor, affecting the uniformity of the reaction, leading to an increase in by-products, and affecting the purity and yield of the product.
A purification device including a cleaning component and a moving component was designed. The device uses a rotating shaft to drive the baffle and scraper to reciprocate under centrifugal force, ensuring that the raw materials are fully mixed and the vessel wall is cleaned. The reciprocating motion of the baffle and scraper is achieved by a motor-driven rotating shaft and synchronous wheel system.
This improved the mixing efficiency of heptafluoroane, prevented the raw materials from adhering to the reactor wall, and enhanced product purity and yield.
Smart Images

Figure CN224672690U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heptafluoroane processing technology, specifically a purification device for heptafluoroane processing. Background Technology
[0002] Sevoflurane, chemically known as 1,1,1,3,3,3-hexafluoro-2-(fluoromethoxy)propane, is a highly desirable inhaled anesthetic following halothane, enflurane, and isoflurane. Approved by the US FDA in 1995, it boasts advantages such as a short induction period, rapid recovery, easy metabolism, low blood-gas partition coefficient, hemodynamic stability, minimal adverse reactions, easily adjustable depth of anesthesia, and non-flammability and non-explosiveness. Therefore, it is increasingly valued and used in general anesthesia for surgery, and has a broad market prospect.
[0003] The existing heptafluoroane synthesis process usually involves sequentially mixing and reacting components such as potassium fluoride, chloromethyl ether, and polyethylene glycol to prepare crude heptafluoroane, and then distilling the crude heptafluoroane to obtain the finished product.
[0004] According to a published heptafluoroane synthesis reactor (publication number: CN212283979U), the above application uses an electric agitator to stir and mix the raw materials, which is convenient for processing. However, in actual operation, when the agitator rotates at high speed, the centrifugal force will cause the raw materials to be thrown towards the inner wall of the reactor, resulting in the accumulation of materials at the edge of the reactor, making it difficult to mix them fully and affecting the uniformity of the reaction. Due to the uneven distribution of materials, some areas may not react completely, leading to an increase in by-products and affecting the purity and yield of the product. Utility Model Content
[0005] The purpose of this invention is to provide a purification apparatus for heptafluoroane processing to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a purification device for processing heptafluoroane, comprising a reaction vessel body, a motor fixed to the top of the reaction vessel body, the output shaft of the motor passing through the reaction vessel body and rotatably connected to the reaction vessel body, a rotating shaft rotatably connected to the top of the inner wall of the reaction vessel body, the top of the rotating shaft being fixed to the bottom of the output shaft of the motor, and a cleaning component and a movable component being provided inside the reaction vessel body, the cleaning component comprising: a fixed rod and a sliding rod; The active components include: Through holes are used to prevent obstruction of the normal movement of the abutment rod; The abutment rod is used to synchronously drive the slide bar to move. The circular plate is used to drive the sliding rods to move closer or further apart synchronously.
[0007] Preferably, two sets of fixed rods and sliding rods are provided. The through hole is opened at the top of one set of fixed rods. An abutment rod is fixed at the top of one set of sliding rods. The top of the abutment rod passes through the through hole. A rotating shaft passes through a circular plate. The rotating shaft and the circular plate are rotatably connected. A connecting hole is opened on the surface of the circular plate. The abutment rod passes through the connecting hole, and the surface of the abutment rod abuts against the inner wall of the connecting hole. A gear is fixed at the top of the circular plate. The rotating shaft passes through the gear. A rotating rod is rotatably connected to the top of the inner wall of the reactor body. A half gear passes through the bottom of the rotating rod. The rotating rod and the half gear are fixedly connected. Next, the rotating rod passes through the second synchronous wheel, and the rotating rod is fixedly connected to the second synchronous wheel. The rotating shaft passes through the first synchronous wheel, and the rotating shaft is fixedly connected to the first synchronous wheel. The surfaces of the first and second synchronous wheels are connected by a synchronous belt. When the rotating shaft rotates, the first synchronous wheel rotates. Through the synchronous belt, the second synchronous wheel, the rotating rod, and the half gear rotate synchronously. When the half gear meshes with the gear, the circular plate reverses. When the half gear does not mesh with the gear, under the influence of centrifugal force, the spoiler and scraper move away from the rotating shaft. When the motor continues to work, through the circular plate, connecting hole, abutment rod, and slide rod, the spoiler rotates and reciprocates inward.
[0008] Preferably, the fixing rod is disposed on the surface of the rotating shaft, the rotating shaft passes through the fixing rod, and the rotating shaft is fixedly connected to the fixing rod. A sliding groove is formed on the surface of the fixing rod, and a sliding rod is slidably connected to the inner wall of the sliding groove. A spring is fixed to the surface of the sliding rod, and the end of the spring away from the sliding rod is fixed to the inner wall of the sliding groove. A baffle is fixed to the end of the sliding rod away from the spring, and a scraper is fixed to the side of the baffle away from the sliding rod. When the rotating shaft rotates, it synchronously drives the fixing rod to rotate. The centrifugal force generated causes the sliding rod to drive the baffle and scraper to move closer to the inner wall of the reactor body. At this time, the surface of the scraper is in contact with the inner wall of the reactor body, and the scraper cleans the inner wall of the reactor body.
[0009] Preferably, the top of the reactor body has a feed inlet, the top of the reactor body has an interface, the surface of the reactor body has an outlet, and the surface of the reactor body has a drain outlet, which facilitates the purification and processing of raw materials.
[0010] Preferably, the connecting hole is arc-shaped, which allows the contact plate and the slide rod to move radially synchronously when the circular plate rotates.
[0011] Preferably, a stirring rod is fixed to the surface of the rotating shaft to facilitate stirring and mixing of the raw materials.
[0012] Compared with the prior art, this utility model provides a purification device for heptafluoroane processing, which has the following beneficial effects:
[0013] 1. This purification device for heptafluoroane processing, through its movable components, causes the rotating shaft to rotate synchronously when the motor starts. This causes synchronous pulley one to rotate synchronous pulley two, rotating rod, and half gear synchronously via synchronous belt. When the half gear meshes with the gear, the circular plate reverses. When the half gear does not mesh with the gear, under the influence of centrifugal force, the slide rod again drives the baffle and scraper away from the rotating shaft, and the circular plate rotates forward. Thus, when the motor is working continuously, through the circular plate, the abutment rod, the connecting hole, the gear, and the half gear, the slide rod drives the baffle to rotate while reciprocating inward, thereby driving the raw materials to move synchronously and improving the mixing efficiency.
[0014] 2. The purification device for heptafluoroane processing, through the cleaning components, when the rotating shaft rotates, the fixed rod rotates, and the centrifugal force generated causes the slide rod to drive the baffle and scraper to fit against the inner wall of the reactor body. The scraper can clean the inner wall of the reactor body and prevent the raw materials from adhering to the inner wall of the reactor body. Attached Figure Description
[0015] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a front view structural diagram of the cleaning component and the movable component of this utility model; Figure 4 This utility model Figure 3 Schematic diagram of the enlarged structure of A in the middle; Figure 5 This is a cross-sectional structural diagram of some of the cleaning components and movable components of this utility model.
[0016] In the diagram: 1. Reactor body; 2. Feed inlet; 3. Interface; 4. Outlet; 5. Drain outlet; 6. Motor; 7. Rotating shaft; 10. Stirring rod; 8. Cleaning assembly; 80. Fixing rod; 81. Slide groove; 82. Slide rod; 83. Spring; 84. Baffle plate; 85. Scraper; 9. Movable assembly; 90. Through hole; 91. Contact rod; 92. Circular plate; 93. Connecting hole; 94. Gear; 95. Half gear; 96. Synchronous pulley one; 97. Synchronous pulley two; 98. Synchronous belt; 99. Rotating rod. Detailed Implementation
[0017] like Figures 1-5As shown, this utility model provides a technical solution: a purification device for processing heptafluoroane, including a reactor body 1, a motor 6 fixed to the top of the reactor body 1, the output shaft of the motor 6 passing through the reactor body 1 and rotatably connected to the reactor body 1, a rotating shaft 7 rotatably connected to the top of the inner wall of the reactor body 1, the top of the rotating shaft 7 being fixed to the bottom of the output shaft of the motor 6, a cleaning component 8 and a movable component 9 being provided inside the reactor body 1, the cleaning component 8 including: a fixed rod 80 and a sliding rod 82; the movable component 9 including: a through hole 90, a contact rod 91, a circular plate 92, a connecting hole 93, a gear 94, a half gear 95, a first synchronous pulley 96, a second synchronous pulley 97, a synchronous belt 98, and a rotating rod 99, a feed inlet 2 and an interface 3 opened at the top of the reactor body 1, an outlet 4 and a drain outlet 5 opened on the surface of the reactor body 1, and a stirring rod 10 fixed on the surface of the rotating shaft 7.
[0018] Two sets of fixed rods 80 and sliding rods 82 are provided. A through hole 90 is opened at the top of one set of fixed rods 80. An abutment rod 91 is fixed to the top of one set of sliding rods 82. The top of the abutment rod 91 passes through the through hole 90. A rotating shaft 7 passes through a circular plate 92, and the rotating shaft 7 is rotatably connected to the circular plate 92. A connecting hole 93 is opened on the surface of the circular plate 92, and the abutment rod 91 passes through the connecting hole 93, with its surface abutting against the inner wall of the connecting hole 93. A gear 94 is fixed to the top of the circular plate 92, and the rotating shaft 7 passes through the gear 94. A rotating rod 99 is rotatably connected to the top of the inner wall of the reactor body 1. A half-gear 95 passes through the bottom of the rotating rod 99, and the rotating rod 99 is fixedly connected to the half-gear 95. A second synchronous wheel 97 passes through the rotating rod 99, and the rotating rod 99 is fixedly connected to the second synchronous wheel 97. A first synchronous wheel 96 passes through the rotating shaft 7, and the rotating shaft 7 is fixedly connected to the first synchronous wheel 96. Wheel 1 96 is fixedly connected, and synchronous wheel 1 96 and synchronous wheel 2 97 are connected by a synchronous belt 98. The connecting hole 93 is set in an arc shape. When the rotating shaft 7 rotates, synchronous wheel 1 96 rotates. Through the synchronous belt 98, synchronous wheel 2 97, rotating rod 99, and half gear 95 rotate synchronously. When half gear 95 meshes with gear 94, the circular plate 92 reverses, which can drive the contact rod 91 and slide rod 82 to move closer to the rotating shaft 7 through the connecting hole 93. At this time, the baffle plate 84 moves synchronously, which can drive the raw materials affected by centrifugal force to gather in the reactor body 1. When half gear 95 does not mesh with gear 94, under the influence of centrifugal force, the slide rod 82 again drives the baffle plate 84 and scraper 85 to move away from the rotating shaft 7. When the motor 6 continues to work, the baffle plate 84 rotates and reciprocates inward, which can drive the raw materials to move synchronously and improve the mixing efficiency.
[0019] A fixed rod 80 is disposed on the surface of a rotating shaft 7, the rotating shaft 7 passes through the fixed rod 80, and the rotating shaft 7 is fixedly connected to the fixed rod 80. A groove 81 is provided on the surface of the fixed rod 80, and a sliding rod 82 is slidably connected to the inner wall of the groove 81. A spring 83 is fixed on the surface of the sliding rod 82, and the end of the spring 83 away from the sliding rod 82 is fixed to the inner wall of the groove 81. A baffle 84 is fixed on the end of the sliding rod 82 away from the spring 83, and a scraper 85 is fixed on the side of the baffle 84 away from the sliding rod 82. When the rotating shaft 7 rotates, it synchronously drives the fixed rod 80 to rotate. The centrifugal force generated by the fixed rod 80 causes the sliding rod 82 to drive the baffle 84 and the scraper 85 to move closer to the inner wall of the reactor body 1. At this time, the surface of the scraper 85 is in contact with the inner wall of the reactor body 1, and the scraper 85 can clean the inner wall of the reactor body 1 to prevent raw materials from adhering to the inner wall of the reactor body 1.
[0020] In use, connect interface 3 to the condensing equipment, and simultaneously connect the discharge end of the condensing equipment to outlet 4. Then, inject the raw materials through inlet 2 and start motor 6. The rotating shaft 7 drives the stirring rod 10 to rotate synchronously, thus stirring the raw materials. Simultaneously, as the rotating shaft 7 rotates, it also drives the fixed rod 80 to rotate. The centrifugal force generated causes the sliding rod 82 to move the baffle 84 and scraper 85 closer to the inner wall of the reactor body 1. At this time, the surface of the scraper 85 is in contact with the inner wall of the reactor body 1, and the spring 83 is stretched. Simultaneously, as the sliding rod 82 moves, it also drives the contact rod 91 to move. The surface of the contact rod 91 then contacts the inner wall of the connecting hole 93, causing the circular plate 92 to rotate clockwise. The circular plate 92 rotates synchronously with the contact rod 91 and the sliding rod 82, and the scraper 85 stirs the inner wall of the reactor body 1. The process involves cleaning to prevent raw materials from adhering to the inner wall of the reactor body 1. Simultaneously, as the rotating shaft 7 rotates, it drives the first synchronous wheel 96 to rotate. This, in turn, causes the second synchronous wheel 97 and the rotating rod 99 to rotate via the synchronous belt 98, resulting in the synchronous rotation of the half-gear 95. When the half-gear 95 meshes with the gear 94, the circular plate 92 reverses direction, causing the contact rod 91 and slide bar 82 to move closer to the rotating shaft 7 via the connecting hole 93. At this time, the baffle plate 84 moves synchronously, drawing the raw materials affected by centrifugal force towards the reactor body 1. When the half-gear 95 is not meshing with the gear 94, under the influence of centrifugal force, the slide bar 82 again drives the baffle plate 84 and scraper 85 away from the rotating shaft 7. As the motor 6 continues to operate, the baffle plate 84 rotates and reciprocates inward, driving the raw materials to move synchronously and improving the mixing efficiency.
[0021] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A purification apparatus for processing heptafluoroane, comprising a reaction vessel body (1), characterized in that: A motor (6) is fixed to the top of the reactor body (1). The output shaft of the motor (6) passes through the reactor body (1) and is rotatably connected to the reactor body (1). A rotating shaft (7) is rotatably connected to the top of the inner wall of the reactor body (1). The top of the rotating shaft (7) is fixed to the bottom of the output shaft of the motor (6). A cleaning component (8) and a movable component (9) are provided inside the reactor body (1). The cleaning component (8) includes: a fixed rod (80) and a sliding rod (82). The active component (9) includes: Through hole (90), through hole (90) is used to avoid obstructing the normal movement of the abutment rod (91); A stop rod (91) is used to synchronously drive the slide rod (82) to move; The circular plate (92) is used to drive the slide bar (82) to move closer or further away from each other synchronously.
2. The purification apparatus for heptafluoroane processing according to claim 1, characterized in that: The fixed rod (80) and sliding rod (82) are each provided in two sets. The through hole (90) is opened at the top of one of the two sets of fixed rods (80). The top of one of the two sets of sliding rods (82) is fixed with an abutting rod (91). The top of the abutting rod (91) passes through the through hole (90). The rotating shaft (7) passes through the circular plate (92). The rotating shaft (7) is rotatably connected to the circular plate (92). The surface of the circular plate (92) is provided with a connecting hole (93). The abutting rod (91) passes through the connecting hole (93), and the surface of the abutting rod (91) abuts against the inner wall of the connecting hole (93). The top of the circular plate (92) A gear (94) is fixed in the part, and the rotating shaft (7) passes through the gear (94). A rotating rod (99) is rotatably connected to the top of the inner wall of the reactor body (1). A half gear (95) passes through the bottom of the rotating rod (99). The rotating rod (99) is fixedly connected to the half gear (95). The rotating rod (99) passes through the second synchronous wheel (97), and the rotating rod (99) is fixedly connected to the second synchronous wheel (97). The rotating shaft (7) passes through the first synchronous wheel (96), and the rotating shaft (7) is fixedly connected to the first synchronous wheel (96). The surfaces of the first synchronous wheel (96) and the second synchronous wheel (97) are connected by a synchronous belt (98).
3. The purification apparatus for heptafluoroane processing according to claim 1, characterized in that: The fixed rod (80) is disposed on the surface of the rotating shaft (7), the rotating shaft (7) passes through the fixed rod (80), and the rotating shaft (7) is fixedly connected to the fixed rod (80). A groove (81) is provided on the surface of the fixed rod (80), and a sliding rod (82) is slidably connected to the inner wall of the groove (81). A spring (83) is fixed on the surface of the sliding rod (82), and the end of the spring (83) away from the sliding rod (82) is fixed on the inner wall of the groove (81). A spoiler (84) is fixed on the end of the sliding rod (82) away from the spring (83), and a scraper (85) is fixed on the side of the spoiler (84) away from the sliding rod (82).
4. A purification apparatus for heptafluoroane processing according to claim 1, characterized in that: The reactor body (1) has a feed inlet (2) at the top, an interface (3) at the top, an outlet (4) on the surface, and a drain outlet (5) on the surface.
5. A purification apparatus for heptafluoroane processing according to claim 2, characterized in that: The connecting hole (93) is set to be arc-shaped.
6. A purification apparatus for heptafluoroane processing according to claim 1, characterized in that: A stirring rod (10) is fixed to the surface of the rotating shaft (7).
Citation Information
Patent Citations
Heptafluoroalkane synthesis reactor
CN212283979U