P-fluoroanisole rectifying still with self-cleaning function
By designing a p-fluoroanisole distillation vessel with a synchronous drive and linkage swing mechanism, the problems of low stirring efficiency and poor cleaning effect in traditional distillation vessels are solved, achieving more efficient material mixing and cleaning of the vessel's inner wall.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU YUNHAO TECH CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional distillation kettles are prone to forming axial vortices during stirring, resulting in uneven material mixing. This is especially true in high-viscosity or solid-containing systems where stirring efficiency is reduced, and the cleaning effect is limited. Existing cleaning methods also have limited nozzle range.
A distillation vessel for p-fluoroanisole with synchronous drive and linkage swing mechanism was designed. The axial vortex is destroyed by the synchronous reverse rotation of the stirring shaft and shaft tube, and the nozzle is made to swing back and forth in the vessel body by the linkage swing mechanism, thereby expanding the spray range of the cleaning solvent.
It improves stirring efficiency, disrupts axial vortex, enhances the cleaning effect inside the vessel, ensures uniform mixing of materials and cleanliness of the inner wall, and reduces unnecessary downtime for disassembly and inspection.
Smart Images
Figure CN224180272U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, specifically to a distillation kettle for p-fluoroanisole with self-cleaning function. Background Technology
[0002] p-Fluoroanisole is an important organic intermediate widely used in pharmaceuticals, pesticides, and fine chemicals. Its production typically requires purification through distillation. The distillation vessel, as the core equipment, directly impacts product purity and production efficiency due to its heat transfer efficiency and cleaning effectiveness. Traditional distillation vessels are prone to forming axial vortices during stirring, leading to uneven material mixing, especially in high-viscosity or solid-containing systems where stirring efficiency is significantly reduced. Furthermore, after long-term operation, high-boiling-point substances or polymers can easily remain on the inner wall and stirring components of the distillation vessel. While existing distillation vessels can be cleaned using mechanical scraping and solvent spraying, the nozzles are generally fixed, limiting the solvent spraying range and hindering the improvement of the cleaning effect inside the vessel. Therefore, a self-cleaning p-fluoroanisole distillation vessel is urgently needed. Utility Model Content
[0003] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing a reasonably designed distillation vessel for p-fluoroanisole with a self-cleaning function, thereby solving the aforementioned problems.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a vessel body, a feed pipe and a discharge pipe, with a feed pipe located on the upper left side of the vessel body and a discharge pipe located on the lower right side of the vessel body;
[0005] It also includes:
[0006] A stirring shaft is movably inserted into the vessel body. Two shaft tubes are rotatably sleeved on the stirring shaft via sealed bearings. The two shaft tubes are rotatably connected to the inner top wall and inner bottom wall of the vessel body via sealed bearing seats, respectively.
[0007] The support frame consists of two supports, which are respectively located on the left and right sides inside the vessel body. A connecting rod is fixedly connected between the support frame and the two shaft tubes. A scraper is fixedly installed on the side wall of the support frame, and the scraper is movably in contact with the inner wall of the vessel body. Several stirring blades are fixedly installed on the other side wall of the support frame.
[0008] The control box is fixedly installed on the upper part of the vessel body. The upper end of the upper shaft tube is rotatably inserted into the control box through a bearing. The control box is equipped with a synchronous drive mechanism that is connected to the stirring shaft and the upper shaft tube.
[0009] The annular tube is fixedly installed on the inner top wall of the vessel body. The annular tube is connected to an external solvent delivery pump through a pipe. Several connecting frames with rounded corners are distributed on the inner top wall of the vessel body at the inner side of the annular tube. A rotating rod is rotatably inserted through the connecting frame via a bearing.
[0010] The nozzles are multiple and are fixedly installed at both ends of several rotating rods. The nozzles are connected to the annular tube through metal hoses. The vessel body is provided with a linkage swing mechanism that is connected to the rotating rods and the synchronous drive mechanism.
[0011] Furthermore, the synchronous drive mechanism includes:
[0012] The motor is fixedly installed on the upper part of the control box. The output shaft of the motor is connected to the stirring shaft. The upper ends of the stirring shaft and the upper shaft tube are both fixedly fitted with a No. 1 bevel gear, and the No. 1 bevel gear is located inside the control box.
[0013] The crossbar consists of two crossbars, which are rotatably mounted on the left and right sides of the control box ring sidewall via bearings. One end of the crossbar is fixedly fitted with a No. 2 bevel gear, and both No. 1 bevel gears are meshed with the two No. 2 bevel gears.
[0014] Furthermore, the linkage swing mechanism includes:
[0015] Fixed sleeves, there are two fixed sleeves, which are respectively fixedly installed on the left and right sides of the control box. A movable block is movably inserted in the fixed sleeve. The movable block is movably sleeved on the other end of the crossbar. The movable block is fixedly installed with two movable blocks. The movable blocks are movably installed in the reciprocating movable groove opened on the crossbar.
[0016] The movable plate consists of two movable plates, which are respectively fixedly installed at the bottom of two movable blocks. The movable plates are movably inserted into the strip groove opened on the bottom wall of the fixed sleeve. Guide blocks are fixedly installed on the front and rear side walls of the movable plates. A lifting frame is movably sleeved on the outside of the control box. Lifting plates are fixedly installed on the upper part of the lifting frame at the front and rear sides of the two movable plates. The guide blocks are movably installed in the inclined guide groove opened on the side wall of the lifting plate.
[0017] The lifting rods consist of several rods, which are distributed at the bottom of the lifting frame with equal rounded corners. The lifting rods are mounted on the top wall of the vessel body through linear sealed bearings. A rack is fixedly installed on the lifting rod, and a spur gear that meshes with the rack is fixedly sleeved on the rotating rod.
[0018] Furthermore, several guide strips with equal rounded corners are distributed on the outer ring wall of the control box, and the guide strips are movably inserted through the lifting frame.
[0019] Furthermore, reinforcing ribs are fixed on both the front and rear sides of the connecting rod, and the reinforcing ribs are fixedly mounted on the shaft tube.
[0020] Furthermore, an observation port is provided on the front side of the vessel body, and an observation mirror is provided inside the observation port.
[0021] Compared with the prior art, the beneficial effects of this utility model are: the self-cleaning distillation vessel for p-fluoroanisole described in this utility model can not only improve the stirring efficiency by destroying the axial vortex, but also make the nozzle swing back and forth during the cleaning process, fully expanding the spray range of the cleaning solvent and improving the cleaning effect on the inside of the distillation vessel. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model.
[0023] Figure 2 This is a cross-sectional view of the vessel body and control box in this utility model.
[0024] Figure 3 yes Figure 2 Enlarged view of part A in the image.
[0025] Figure 4 This is an exploded view of the crossbar, fixed sleeve, moving block, movable block, moving plate, guide block, lifting frame and lifting plate in this utility model.
[0026] Figure 5 This is an exploded view of the parts of the annular tube, connecting frame, rotating rod, nozzle, lifting rod, rack and spur gear in this utility model.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1. Kettle body; 2. Feed pipe; 3. Discharge pipe; 4. Stirring shaft; 5. Shaft tube; 6. Support frame; 7. Connecting rod; 8. Scraper; 9. Stirring blade; 10. Control box; 11. Synchronous drive mechanism; 11. Motor; 11-1. First bevel gear; 11-2. Crossbar; 11-3. Second bevel gear; 11-4. Annular tube; 12. Connecting frame; 13. Rotating rod; 14. Nozzle; 15. Linkage swing mechanism; 16. Fixed sleeve; 16-1. Moving block; 16-2. Movable block; 16-3. Moving plate; 16-4. Guide block; 16-5. Lifting frame; 16-6. Lifting plate; 16-7. Lifting rod; 16-8. Rack; 16-9. Spur gear; 16-10. Reciprocating moving groove; 17. Inclined guide groove; 18. Guide bar; 19. Reinforcing rib; 20. Observation mirror; 21. Detailed Implementation
[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] like Figures 1-5As shown, this specific embodiment adopts the following technical solution: It includes a vessel body 1, a feed pipe 2, and a discharge pipe 3. The feed pipe 2 is located on the upper left side of the vessel body 1, and the discharge pipe 3 is located on the lower right side of the vessel body 1. An observation port is provided on the front side of the vessel body 1, and an observation sight glass 21 is provided inside the observation port. Through the observation sight glass 21, not only can the liquid level change inside the vessel body 1 be monitored during the distillation process to avoid dry burning or overflow, but also the staff can intuitively judge the cleanliness of the inner wall of the vessel body 1, reducing unnecessary shutdowns for disassembly and inspection.
[0031] It also includes:
[0032] A stirring shaft 4 is movably inserted into the vessel body 1. Two shaft tubes 5 are rotatably sleeved on the stirring shaft 4 through a sealed bearing. The two shaft tubes 5 are rotatably connected to the inner top wall and the inner bottom wall of the vessel body 1 through a sealed bearing seat, respectively.
[0033] Support frame 6, there are two support frames 6, respectively set on the left and right sides inside the vessel body 1. The support frame 6 is fixedly connected to the two shaft tubes 5 by a connecting rod 7. The front and rear sides of the connecting rod 7 are fixed with reinforcing ribs 20, and the reinforcing ribs 20 are fixedly set on the shaft tubes 5. The reinforcing ribs 20 can improve the connection structure strength between the connecting rod 7 and the shaft tubes 5, thereby making the scraper 8 more stable in the process of cleaning materials on the inner wall of the vessel body 1. The scraper 8 is fixedly set on the side wall of the support frame 6, and the scraper 8 is movably abutting against the inner wall of the vessel body 1. Several stirring blades 9 are fixedly set on the other side wall of the support frame 6.
[0034] Control box 10, the control box 10 is fixedly installed on the upper part of the vessel body 1, the upper end of the upper shaft tube 5 is rotatably inserted into the control box 10 through a bearing, and the control box 10 is provided with a synchronous drive mechanism 11 connected to the stirring shaft 4 and the upper shaft tube 5;
[0035] The annular tube 12 is fixedly installed on the inner top wall of the vessel body 1. The annular tube 12 is connected to an external solvent delivery pump through a pipe. Several connecting frames 13 are distributed with rounded corners on the inner side of the annular tube 12 on the inner top wall of the vessel body 1. A rotating rod 14 is rotatably inserted through the connecting frame 13 via a bearing.
[0036] The nozzle 15 is a plurality of nozzles, which are fixedly installed at both ends of a plurality of rotating rods 14. The nozzles 15 are connected to the annular tube 12 through metal hoses. The vessel body 1 is provided with a linkage swing mechanism 16 connected to the rotating rods 14 and the synchronous drive mechanism 11.
[0037] The synchronous drive mechanism 11 includes:
[0038] Motor 11-1 is fixedly installed on the upper part of control box 10. The output shaft of motor 11-1 is connected to stirring shaft 4. The upper ends of stirring shaft 4 and upper shaft tube 5 are both fixedly fitted with a first bevel gear 11-2, and the first bevel gear 11-2 is located inside control box 10.
[0039] Two crossbars 11-3 are respectively rotatably mounted on the left and right sides of the control box 10 ring sidewall via bearings. One end of the crossbar 11-3 is fixedly fitted with a second bevel gear 11-4. Two first bevel gears 11-2 are meshed with two second bevel gears 11-4. When the motor 11-1 drives the stirring shaft 4 to rotate, the meshing of the first bevel gear 11-2 and the second bevel gear 11-4 allows the shaft tube 5 to drive the scraper 8 to rotate inside the vessel 1 via the connecting rod 7 and the support frame 6. This achieves stirring of the material inside the vessel 1 while scraping off the material adhering to the inner wall of the vessel 1. At this time, the stirring shaft 4 and the shaft tube 5 rotate synchronously in opposite directions, so that the stirring blades 9 can destroy the axial vortex generated by the rotation of the stirring shaft 4, thereby improving the stirring effect of the material inside the vessel 1.
[0040] The linkage swing mechanism 16 includes:
[0041] Fixed sleeve 16-1, there are two fixed sleeves 16-1, which are respectively fixedly installed on the left and right sides of the control box 10. A movable block 16-2 is movably inserted in the fixed sleeve 16-1. The movable block 16-2 is movably sleeved on the other end of the crossbar 11-3. Two movable blocks 16-3 are fixedly installed on the movable block 16-2. The movable blocks 16-3 are movably installed in the reciprocating movable groove 17 opened on the crossbar 11-3.
[0042] Two movable plates 16-4 are fixedly installed at the bottom of two movable blocks 16-2, and the movable plates 16-4 are movably inserted into the strip groove opened on the bottom wall of the fixed sleeve 16-1. Guide blocks 16-5 are fixedly installed on the front and rear side walls of the movable plates 16-4. A lifting frame 16-6 is movably sleeved on the outside of the control box 10. Lifting plates 16-7 are fixedly installed on the upper part of the lifting frame 16-6 at the front and rear sides of the two movable plates 16-4. The guide blocks 16-5 are movably installed in the inclined guide grooves 18 opened on the side walls of the lifting plates 16-7. Several guide strips 19 are evenly rounded on the outer ring wall of the control box 10, and the guide strips 19 are movably inserted on the lifting frame 16-6. The guide strips 19 can provide guidance for the up and down movement of the lifting frame 16-6 on the control box 10, thereby improving the movement stability of the lifting frame 16-6.
[0043] The lifting rods 16-8 are of several types, with equal rounded corners distributed at the bottom of the lifting frame 16-6. The lifting rods 16-8 are mounted on the top wall of the vessel body 1 through linear sealed bearings. A rack 16-9 is fixedly installed on the lifting rods 16-8, and a spur gear 16-10 that meshes with the rack 16-9 is fixedly sleeved on the rotating rod 14.
[0044] When using this utility model, the material is conveyed into the vessel 1 through the feed pipe 2, and then the motor 11-1 is started. The motor 11-1 drives the stirring shaft 4 to rotate, thereby stirring the material in the vessel 1. During this process, the stirring shaft 4 can drive the first bevel gear 11-2 above to rotate. By using the meshing of the first bevel gear 11-2 and the second bevel gear 11-4, the upper shaft tube 5 can rotate synchronously in the opposite direction to the stirring shaft 4. The shaft tube 5 can drive the support frame 6 to rotate in the vessel 1 through the connecting rod 7. The support frame 6 drives the scraper 8 and the stirring blade 9 to rotate. The scraper 8 can scrape off the material adhering to the inner wall of the vessel 1. The stirring blade 9 rotates in the opposite direction to the stirring shaft 4 in the vessel 1, so that the stirring blade 9 can destroy the axial vortex generated by the stirring shaft 4 when stirring the material.
[0045] After the material in the vessel 1 is discharged, an external solvent delivery pump can be used to sequentially deliver solvent to the annular pipe 12, the metal hose, and the nozzle 15. Finally, the nozzle 15 can spray the solvent onto the inner wall of the vessel 1, and the scraper 8 rotates inside the vessel 1 in the same way as described above to mechanically scrape off the material remaining on the inner wall of the vessel 1. At this time, the second bevel gear 11-4 will drive the crossbar 11-3 to rotate, causing the movable block 16-3 to move back and forth in the reciprocating groove 17 and drive the moving block 16-2 to move left and right back and forth. 6-2 drives the moving plate 16-4 to move back and forth left and right. The moving plate 16-4 drives the guide block 16-5 to move back and forth left and right in the inclined guide groove 18. At this time, the lifting plate 16-7 can drive the lifting frame 16-6 to move back and forth up and down. The lifting frame 16-6 drives the rack 16-9 to move back and forth up and down through the lifting rod 16-8, so that the spur gear 16-10 can drive the rotating rod 14 to achieve a certain angle of forward and reverse reciprocating rotation, so that the rotating rod 14 can drive the nozzle 15 to swing back and forth, expanding the spraying range of the solvent in the vessel 1.
[0046] Compared with the prior art, the beneficial effects of this utility model are:
[0047] 1. Through the cooperation of shaft tube 5, support frame 6, connecting rod 7, stirring blade 9 and synchronous drive mechanism 11, the axial vortex generated by the stirring of the stirring shaft 4 at the center of the vessel body 1 during the stirring process can be destroyed, making the flow field inside the vessel body 1 more complex and improving the stirring effect and efficiency of the material.
[0048] 2. With the cooperation of the linkage swing mechanism 16, the nozzle 15 can swing back and forth at a certain angle while mechanically scraping the material on the inner wall of the vessel 1, thereby expanding the range of solvent spraying inside the vessel 1 and improving the cleaning efficiency inside the vessel 1.
[0049] 3. By observing the sight glass 21, not only can the liquid level change inside the vessel 1 be monitored during the distillation process to avoid dry burning or overflow, but also the staff can intuitively judge the cleanliness of the inner wall of the vessel 1, reducing unnecessary shutdowns for disassembly and inspection.
[0050] 4. The reinforcing rib 20 can improve the connection strength between the connecting rod 7 and the shaft tube 5, thereby making the scraper 8 more stable in the process of cleaning materials on the inner wall of the vessel 1.
[0051] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A self-cleaning distillation vessel for p-fluoroanisole, comprising a vessel body (1), a feed pipe (2) and a discharge pipe (3), wherein the feed pipe (2) is provided on the upper left side of the vessel body (1) and the discharge pipe (3) is provided on the lower right side of the vessel body (1); Its features are, It also includes: A stirring shaft (4) is movably inserted into the vessel body (1). Two shaft tubes (5) are rotatably sleeved on the stirring shaft (4) through a sealed bearing. The two shaft tubes (5) are rotatably connected to the inner top wall and inner bottom wall of the vessel body (1) respectively through a sealed bearing seat. Support frame (6), there are two support frames (6), which are respectively located on the left and right sides inside the vessel body (1). A connecting rod (7) is fixedly connected between the support frame (6) and the two shaft tubes (5). A scraper (8) is fixedly installed on the side wall of the support frame (6). The scraper (8) is movably abutting against the inner wall of the vessel body (1). Several stirring blades (9) are fixedly installed on the other side wall of the support frame (6). Control box (10), the control box (10) is fixedly installed on the upper part of the vessel body (1), the upper end of the upper shaft tube (5) is rotatably inserted into the control box (10) through the bearing, and the control box (10) is provided with a synchronous drive mechanism (11) connected to the stirring shaft (4) and the upper shaft tube (5); The annular tube (12) is fixedly installed on the inner top wall of the vessel body (1). The annular tube (12) is connected to an external solvent delivery pump through a pipe. Several connecting frames (13) are distributed with rounded corners on the inner top wall of the vessel body (1) at the inner side of the annular tube (12). A rotating rod (14) is rotatably installed on the connecting frame (13) through a bearing. The nozzle (15) consists of several nozzles, which are fixedly installed at both ends of several rotating rods (14). The nozzles (15) are connected to the annular pipe (12) through a metal hose. The vessel body (1) is provided with a linkage swing mechanism (16) connected to the rotating rods (14) and the synchronous drive mechanism (11).
2. The self-cleaning distillation vessel for p-fluoroanisole according to claim 1, characterized in that: The synchronous drive mechanism (11) includes: The motor (11-1) is fixedly installed on the upper part of the control box (10). The output shaft of the motor (11-1) is connected to the stirring shaft (4). The upper ends of the stirring shaft (4) and the upper shaft tube (5) are both fixedly fitted with a first bevel gear (11-2), and the first bevel gear (11-2) is located inside the control box (10). There are two crossbars (11-3), which are respectively rotatably mounted on the left and right sides of the ring side wall of the control box (10) via bearings. One end of the crossbar (11-3) is fixedly fitted with a second bevel gear (11-4), and the two first bevel gears (11-2) are meshed with the two second bevel gears (11-4).
3. The self-cleaning distillation vessel for p-fluoroanisole according to claim 1, characterized in that: The linkage swing mechanism (16) includes: Fixed sleeve (16-1), there are two fixed sleeves (16-1), which are respectively fixedly installed on the left and right sides of the control box (10). A movable block (16-2) is movably inserted in the fixed sleeve (16-1). The movable block (16-2) is movably sleeved on the other end of the crossbar (11-3). The movable block (16-2) is fixedly provided with two movable blocks (16-3). The movable blocks (16-3) are movably installed in the reciprocating movable groove (17) opened on the crossbar (11-3). Two movable plates (16-4) are fixedly installed at the bottom of two movable blocks (16-2) respectively. The movable plates (16-4) are movably installed in the strip groove opened on the bottom wall of the fixed sleeve (16-1). Guide blocks (16-5) are fixedly installed on the front and rear side walls of the movable plates (16-4). A lifting frame (16-6) is movably installed on the outside of the control box (10). Lifting plates (16-7) are fixedly installed on the upper part of the lifting frame (16-6) at the front and rear sides of the two movable plates (16-4). The guide blocks (16-5) are movably installed in the inclined guide groove (18) opened on the side wall of the lifting plate (16-7). The lifting rod (16-8) consists of several rods, which are distributed at the bottom of the lifting frame (16-6) with equal rounded corners. The lifting rod (16-8) passes through the top wall of the vessel body (1) through a linear sealed bearing. A rack (16-9) is fixedly installed on the lifting rod (16-8). A spur gear (16-10) that meshes with the rack (16-9) is fixedly sleeved on the rotating rod (14).
4. The p-fluroanisole rectifying kettle with self-cleaning function according to claim 3, characterized in that: The outer ring wall of the control box (10) has several guide bars (19) with equal rounded corners, and the guide bars (19) are movably inserted on the lifting frame (16-6).
5. The self-cleaning distillation vessel for p-fluoroanisole according to claim 1, characterized in that: The connecting rod (7) is fixed with reinforcing ribs (20) on both the front and rear sides, and the reinforcing ribs (20) are fixedly installed on the shaft tube (5).
6. The self-cleaning distillation vessel for p-fluoroanisole according to claim 1, characterized in that: The front side of the vessel body (1) is provided with an observation port, and an observation sight glass (21) is provided inside the observation port.