Pharmaceutical crystallization kettle
By setting a cavity and a sliding extrusion column drive mechanism on the stirring shaft, the problem of crystal blockage at the outlet in the crystallization kettle is solved, achieving efficient crystal extrusion and cleaning, and ensuring continuous operation of the crystallization kettle.
Patent Information
- Application Number
- CN202520028720.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-07
AI Technical Summary
After crystallization, the existing crystallization kettle has large crystal particles that easily clog the discharge port, making it difficult to discharge the material.
A cavity is set on the stirring shaft, and an extrusion column is slidably connected. The extrusion column is driven to move up and down in the cavity by the driving mechanism, and enters the discharge port through the guide part to realize the extrusion of crystals. The limiting ring and cleaning strip are combined for limiting and cleaning.
This effectively prevents clogging of the discharge port, improves crystal extraction efficiency, and ensures continuous operation of the crystallization reactor.
Smart Images
Figure CN223760450U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pharmaceutical equipment, and more specifically, to a pharmaceutical crystallization vessel. Background Technology
[0002] A crystallization vessel is a device used for crystallization processes, which involve gradually crystallizing a solute in a solution into solid crystals. In a crystallization vessel, the solute is dissolved in a solvent, and as the temperature changes or other conditions are adjusted, the solute gradually precipitates out of the solution and crystallizes to form solid particles. Crystallization vessels are typically made of high-temperature and corrosion-resistant materials and are designed for precise control of temperature, stirring, and other process parameters. They are widely used in the chemical, pharmaceutical, and other fields for purifying and preparing crystalline materials.
[0003] In existing crystallization kettles, after crystallization is completed, the crystals are discharged through the outlet. If the crystal particles are large, the outlet is easily blocked.
[0004] Therefore, a new solution is needed to address this problem. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pharmaceutical crystallization vessel.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pharmaceutical crystallization vessel, including a vessel body, a discharge port on the vessel body, a stirring shaft rotatably connected inside the vessel body, a cavity on the stirring shaft, the opening of the cavity being located at one end of the stirring shaft near the bottom surface of the vessel body, an extrusion column slidably connected inside the cavity, the cross-section of the extrusion column being the same as the cross-section of the discharge port, and a driving mechanism for moving the extrusion column being provided between the extrusion column and the stirring shaft.
[0007] The present invention is further configured such that: the driving mechanism includes a plurality of sliding columns and a sliding ring groove, the sliding columns slide in the sliding ring groove, the sliding columns are fixedly connected to the extrusion column, the sliding ring groove is located on the cavity wall of the cavity, and the sliding ring groove is inclined.
[0008] The present invention is further configured such that: a limiting ring is provided on the side of the stirring shaft near the bottom of the vessel body to restrict the rotation of the extrusion column; the limiting ring is rotatably connected to the stirring shaft; and the limiting ring remains stationary relative to the vessel body.
[0009] The present invention is further configured such that: a protruding strip is fixedly connected to the inner wall of the limiting ring, and an annular groove for accommodating the protruding strip is provided on the outer wall of the stirring shaft.
[0010] The present invention is further configured such that: the cross-section of the extrusion column is polygonal, and the limiting ring is provided with a through hole that is the same as the cross-section of the extrusion column.
[0011] The present invention is further configured such that: a plurality of limiting posts are fixedly connected between the limiting ring and the vessel body.
[0012] The present invention is further configured such that: a plurality of cleaning strips are fixedly connected to the extrusion column, and the cleaning strips have openings through which the limiting column passes, and the cross-section of the openings is the same as the cross-section of the limiting column.
[0013] The present invention is further configured such that: a guide part is fixedly connected to the side of the extrusion column facing the discharge port, the cross-section of the guide part is trapezoidal, and the area of the side of the guide part facing the discharge port is smaller than the cross-sectional area of the discharge port.
[0014] In summary, this utility model has the following beneficial effects:
[0015] By setting a cavity on the stirring shaft and setting a sliding extrusion column inside the cavity, the extrusion column can enter the discharge port to extrude the crystals out of the discharge port. A drive mechanism is set between the stirring shaft and the extrusion column, so that when the stirring shaft rotates, the drive mechanism drives the extrusion column to move up and down. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a cross-sectional view of the present invention;
[0018] Figure 3 for Figure 2 Enlarged schematic diagram of part A;
[0019] Figure 4 for Figure 2 Enlarged schematic diagram of part B;
[0020] Figure 5 This is a partial exploded view of the present invention.
[0021] In the diagram: 1. Kettle body; 2. Discharge port; 3. Stirring shaft; 4. Cavity; 5. Extrusion column; 6. Sliding column; 7. Sliding ring groove; 8. Limiting ring; 9. Protrusion; 10. Ring groove; 11. Limiting column; 12. Cleaning strip; 13. Opening; 14. Guide part; 15. Through hole. Detailed Implementation
[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] A pharmaceutical crystallization vessel, such as Figures 1 to 5As shown, the apparatus includes a vessel body 1 with a discharge port 2. A stirring shaft 3 is rotatably connected inside the vessel body 1, and a cavity 4 is provided on the stirring shaft 3. The opening of the cavity 4 is located at one end of the stirring shaft 3 near the bottom surface of the vessel body 1. An extrusion column 5 is slidably connected inside the cavity 4. The cross-section of the extrusion column 5 is the same as the cross-section of the discharge port 2. A drive mechanism is provided between the extrusion column 5 and the stirring shaft 3 to move the extrusion column 5. By providing a cavity 4 on the stirring shaft 3, the extrusion column 5 slides inside the cavity 4 and can enter the discharge port 2, thereby extruding the crystals out of the discharge port 2. At the same time, a drive mechanism is provided between the stirring shaft 3 and the extrusion column 5, so that when the stirring shaft 3 rotates, the drive mechanism drives the extrusion column 5 to move up and down.
[0024] like Figure 3 and Figure 5 As shown, the driving mechanism includes a sliding column 6 and a sliding annular groove 7. The sliding column 6 slides in the sliding annular groove 7 and is welded to the extrusion column 5. The sliding annular groove 7 is located on the cavity wall of the cavity 4 and is inclined. By setting the sliding column 6 fixedly connected to the extrusion column 5 and the annular sliding annular groove 7 on the cavity wall of the cavity 4, the sliding column 6 slides in the sliding annular groove 7 when the stirring shaft 3 rotates, thereby driving the extrusion column 5 to move up and down. The extrusion column 5 has an integrally formed guide part 14 on the side facing the discharge port 2. The cross-section of the guide part 14 is trapezoidal and the area of the guide part 14 facing the discharge port 2 is smaller than the cross-sectional area of the discharge port 2. By setting the guide part 14 on the extrusion column 5 and the trapezoidal cross-section of the guide part 14, it is easier for the extrusion column 5 to enter the discharge port 2.
[0025] like Figure 4 and Figure 5 As shown, a limiting ring 8 is provided on the side of the stirring shaft 3 near the bottom of the vessel body 1 to restrict the rotation of the extrusion column 5. The limiting ring 8 is rotatably connected to the stirring shaft 3 and remains stationary relative to the vessel body 1. By setting the limiting ring 8 rotatably connected to the stirring shaft 3, the limiting ring 8 restricts the rotation of the extrusion column 5. A protrusion 9 is fixedly connected to the inner wall of the limiting ring 8, and an annular groove 10 for accommodating the protrusion 9 is opened on the outer wall of the stirring shaft 3. By setting the protrusion 9 to rotate in the annular groove 10, the limiting ring 8 is rotatably connected to the stirring shaft 3. The cross-section of the extrusion column 5 is rectangular, and a through hole 15 with the same cross-section as the extrusion column 5 is opened on the limiting ring 8. When the extrusion column 5 passes through the through hole 15, the rotation of the extrusion column 5 is restricted.
[0026] like Figure 4 and Figure 5As shown, two limiting posts 11 are fixedly connected between the limiting ring 8 and the vessel body 1. By setting the limiting posts 11 between the limiting ring 8 and the vessel body 1, the limiting ring 8 is kept stationary relative to the vessel body 1. Two cleaning strips 12 are fixedly connected to the extrusion column 5. The cleaning strips 12 have openings 13 through which the limiting posts 11 pass. The cross-section of the openings 13 is the same as that of the limiting posts 11. By setting the cleaning strips 12 on the extrusion column 5, and setting the openings 13 through which the limiting posts 11 pass, and the cross-section of the openings 13 is the same as that of the limiting posts 11, the cleaning strips 12 clean the crystals on the limiting posts 11 when the extrusion column 5 moves.
[0027] Working process: When the stirring shaft 3 rotates, the limiting ring 8 remains stationary relative to the vessel body 1 due to the fixed connection between the limiting ring 8 and the vessel body 1 via the limiting post 11. The limiting ring 8 rotates relative to the stirring shaft 3. At this time, the protrusion 9 on the limiting ring 8 slides within the annular groove 10. A rectangular through hole 15 is opened on the limiting ring 8. The cross-section of the extrusion post 5 is the same as the cross-section of the through hole 15. Therefore, after the extrusion post 5 passes through the through hole 15, the limiting ring 8 can restrict the rotation of the extrusion post 5. Meanwhile, the sliding post 6 on the extrusion post 5 slides within the sliding annular groove 7 on the stirring shaft 3. Because the sliding annular groove 7 is inclined, the stirring shaft... When the 360° rotation is performed, the extrusion column 5 slides up and down in the cavity 4. At the same time, the extrusion column 5 also slides up and down in the through hole 15. Since the extrusion column 5 is provided with a guide part 14, it is convenient for the extrusion column 5 to enter the discharge port 2. When the extrusion column 5 slides down and enters the discharge port 2, the extrusion column 5 can extrude the crystal out of the discharge port 2, which is convenient for the crystal to be taken out. When the extrusion column 5 moves up and down, the cleaning strip 12 moves synchronously with the extrusion column 5. Since the cleaning strip 12 is provided with an opening 13, the opening 13 is passed through by the limiting post 11, so the cleaning strip 12 can scrape off the crystal on the limiting post 11.
[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A pharmaceutical crystallization kettle comprising a kettle body (1), characterized in that: The kettle body (1) is provided with a discharge port (2), the kettle body (1) is rotatably connected with a stirring shaft (3), the stirring shaft (3) is provided with a cavity (4), the opening of the cavity (4) is located at one end of the stirring shaft (3) close to the bottom surface of the kettle body (1), the cavity (4) is slidably connected with an extrusion column (5), the cross section of the extrusion column (5) is the same as that of the discharge port (2), the extrusion column (5) and the stirring shaft (3) are provided with a driving mechanism for driving the extrusion column (5) to move, the driving mechanism comprises a plurality of sliding columns (6) and sliding ring grooves (7), the sliding column (6) slides in the sliding ring groove (7), the sliding column (6) is fixedly connected to the extrusion column (5), the sliding ring groove (7) is located on the cavity wall of the cavity (4), the sliding ring groove (7) is inclined, the side of the stirring shaft (3) close to the bottom end of the kettle body (1) is provided with a limiting ring (8) for limiting the rotation of the extrusion column (5), the limiting ring (8) is rotatably connected to the stirring shaft (3), and the limiting ring (8) remains stationary relative to the kettle body (1).
2. The pharmaceutical crystallization kettle according to claim 1, characterized in that: The inner wall of the limiting ring (8) is fixedly connected with a convex strip (9), and the outer wall of the stirring shaft (3) is provided with a ring groove (10) for accommodating the convex strip (9).
3. The pharmaceutical crystallization kettle according to claim 2, characterized in that: The cross section of the extrusion column (5) is polygonal, and the limiting ring (8) is provided with a through hole (15) with the same cross section as the extrusion column (5).
4. The pharmaceutical crystallization kettle according to claim 1, characterized in that: The limiting ring (8) and the kettle body (1) are fixedly connected with a plurality of limiting columns (11).
5. The pharmaceutical crystallization kettle according to claim 4, characterized in that: The extrusion column (5) is fixedly connected with a plurality of cleaning strips (12), the cleaning strip (12) is provided with an opening (13) through which the limiting column (11) passes, and the cross section of the opening (13) is the same as that of the limiting column (11).
6. The pharmaceutical crystallization kettle according to claim 1, characterized in that: The side of the extrusion column (5) close to the discharge port (2) is fixedly connected with a guide part (14), the cross section of the guide part (14) is trapezoidal, and the area of the side of the guide part (14) close to the discharge port (2) is smaller than the cross section area of the discharge port (2).