A recrystallization purification device for producing quaternary ammonium salt-73

Abstract

The application discloses a recrystallization purification device for quaternary ammonium salt-73 production and belongs to the technical field of chemical product purification, which comprises a heating kettle, a stirring mechanism, a filtering mechanism, a crystallization mechanism and a solvent recovery mechanism. The heating kettle comprises a kettle body and a kettle cover. The stirring mechanism comprises a stirring motor, a center gear, an inner ring gear, a planetary gear, a first stirring shaft, first stirring blades, a second stirring shaft and second stirring blades. The stirring motor can drive the first stirring shaft and the second stirring shaft to rotate in opposite directions, so that the quaternary ammonium salt-73 diffuses in different directions, thereby improving the dissolution speed of the quaternary ammonium salt-73. Meanwhile, the second stirring shaft can rotate along the first stirring shaft, so that the second stirring blades stir the solvent at different positions, and the stirring mechanism can stir more uniformly.

Description

Technical Field

[0001] This application relates to the technical field of chemical product purification, and in particular to a recrystallization purification apparatus for the production of quaternary ammonium salt-73. Background Technology

[0002] Quaternium-73 is a cosmetic antibacterial ingredient, also known as piodin. It possesses antibacterial activity and can be used as a preservative, exhibiting strong bactericidal and antimicrobial capabilities against bacteria, Staphylococcus, and Escherichia coli, with preservative performance superior to parabens. After the production of Quaternium-73, the crude product needs to be purified.

[0003] The existing quaternary ammonium salt-73 is purified by recrystallization. The crude quaternary ammonium salt-73 and solvent are placed in a heating kettle. The kettle is heated and stirred by a stirring mechanism to dissolve the quaternary ammonium salt-73 in the solvent. Undissolved impurities are filtered out by a filtration mechanism. The quaternary ammonium salt-73 is precipitated from the solvent by a crystallization mechanism. The solvent is recovered by a solvent recovery mechanism.

[0004] Regarding the aforementioned prior art, the inventors discovered that the existing stirring shaft can only rotate in one direction, causing a large amount of quaternary ammonium salt-73 to diffuse in one direction, which is not conducive to the rapid dissolution of quaternary ammonium salt-73. Summary of the Invention

[0005] In order to improve the dissolution rate of quaternary ammonium salt-73, this application provides a recrystallization and purification apparatus for the production of quaternary ammonium salt-73.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: A recrystallization and purification apparatus for the production of quaternary ammonium salt-73 includes a heating kettle, a stirring mechanism, a filtration mechanism, a crystallization mechanism, and a solvent recovery mechanism. The heating kettle, filtration mechanism, crystallization mechanism, and solvent recovery mechanism are connected sequentially. The heating kettle includes a kettle body and a kettle cover. The kettle cover is located at the opening of the kettle body and includes a central plate and an outer ring plate. The central plate is rotatably mounted at the center of the outer ring plate. The stirring mechanism includes a stirring motor, a central gear, an internal gear ring, planetary gears, a first stirring shaft, a first stirring blade, a second stirring shaft, and a second stirring blade. The stirring motor is fixedly connected to the outer ring plate. The central gear is rotatably mounted at the center of the central plate via a first rotating shaft and is fixedly connected to the output end of the stirring motor via the first rotating shaft. The internal gear ring is fixedly mounted on the outer ring plate. The planetary gear is rotatably mounted on the central plate via a second rotating shaft. One side of the planetary gear meshes with the central gear, and the other side meshes with the internal gear ring. The first stirring shaft and the first rotating shaft are fixedly mounted. The first stirring blade is fixedly mounted on the first stirring shaft. The second stirring shaft and the second rotating shaft are fixedly mounted. The second stirring blade is fixedly mounted on the second stirring shaft.

[0007] By adopting the above scheme, the stirring motor can drive the first stirring shaft and the second stirring shaft to rotate, and the first stirring shaft and the second stirring shaft rotate in opposite directions, so that the quaternary ammonium salt-73 diffuses in different directions, thereby increasing the dissolution rate of the quaternary ammonium salt-73. At the same time, the second stirring shaft can rotate along the first stirring shaft, so that the second stirring blade can stir the solvent at different positions, making the stirring mechanism more uniform.

[0008] Optionally, it also includes a base and an opening and closing assembly. The heating vessel is placed on the base, and ear plates are fixedly installed on both sides of the outer ring plate. The opening and closing assembly includes a gantry frame, a drive motor, a screw, and a guide rod. The gantry frame is installed on the base, the drive motor is fixedly installed on the gantry frame, the screw is rotatably installed on the gantry frame, and the screw is fixedly connected to the output end of the drive motor. The guide rod is fixedly installed on the gantry frame, one ear plate is threadedly connected to the screw, and the other ear plate is slidably connected to the guide rod.

[0009] By adopting the above scheme, the drive motor can drive the ear plate to rise and fall, which facilitates the opening and closing of the lid and the cleaning of the first stirring shaft, the first stirring blade, the second stirring shaft, and the second stirring blade.

[0010] Optionally, both ear plates are fixedly installed with thickened pads at the connection points with the opening and closing components.

[0011] By adopting the above solution, the connection area between the ear plate and the screw is increased, making it easier for the screw to drive the lid of the vessel to rise and fall.

[0012] Optionally, an electric guide rail is fixedly installed on the base, and the slider of the electric guide rail is fixedly connected to the bottom end of the gantry frame.

[0013] By adopting the above method, the opened lid can be moved to the outside of the vessel body, making it easier to clean the inner wall of the vessel.

[0014] Optionally, a sealing groove is provided on the upper surface of the vessel body, and a heat-insulating sealing strip is installed in the sealing groove. After the vessel lid is placed on the vessel body, the bottom surface of the vessel lid abuts against the upper surface of the heat-insulating sealing strip.

[0015] By adopting the above solution, the sealing performance of the vessel body and lid is improved, heat loss inside the vessel is reduced, and energy waste is reduced.

[0016] Optionally, the first rotating shaft extends into the vessel body, and a first connecting sleeve is fixed at one end of the first rotating shaft in the vessel body. The first stirring shaft is inserted into the first connecting sleeve, and the first stirring shaft and the first connecting sleeve are fixedly connected by bolts. The second rotating shaft extends into the vessel body, and a second connecting sleeve is fixed at one end of the second rotating shaft in the vessel body. The second stirring shaft is inserted into the second connecting sleeve, and the second stirring shaft and the second connecting sleeve are fixedly connected by bolts.

[0017] By adopting the above solution, it is convenient to disassemble and assemble the first stirring shaft and the first stirring blade, and the second stirring shaft and the second stirring blade, and to facilitate the cleaning of the first stirring shaft, the first stirring blade, the second stirring shaft, and the second stirring blade.

[0018] Optionally, an outer ring sleeve is fixedly installed at the outer edge of the end face of the center plate, and an inner ring sleeve is fixedly installed at the inner edge of the end face of the outer ring plate. The outer ring sleeve and the inner ring sleeve are connected by a bearing.

[0019] By adopting the above scheme, it is convenient for the center plate and the outer ring plate to rotate relative to each other.

[0020] Optionally, it also includes a protective component, which includes a protective barrier and a protective cover. The protective barrier is fixedly installed on the inner gear ring, the protective cover is fixedly installed on the protective barrier, and the stirring motor is fixedly installed on the protective cover.

[0021] By adopting the above solution, external debris can be prevented from damaging the central gear, internal gear ring, and planetary gears, thereby extending their service life.

[0022] Optionally, multiple sets of the first stirring blades are arranged along the first stirring shaft axial direction, and multiple sets of the second stirring blades are arranged along the second stirring shaft axial direction, with the first stirring blades and the second stirring blades being arranged alternately.

[0023] By adopting the above scheme, the accommodating length of the first and second stirring blades is increased, allowing for the setting of longer first and second stirring blades, thereby improving the stirring efficiency of the stirring mechanism.

[0024] In summary, this application has the following technical effects: The stirring motor can drive the first stirring shaft and the second stirring shaft to rotate, and the first stirring shaft and the second stirring shaft rotate in opposite directions, so that the quaternary ammonium salt-73 diffuses in different directions, which increases the dissolution rate of the quaternary ammonium salt-73. At the same time, the second stirring shaft can rotate along the first stirring shaft, so that the second stirring blade stirs the solvent at different positions, making the stirring mechanism more uniform. The drive motor can lift the ear plate, which facilitates the opening and closing of the lid and the cleaning of the first stirring shaft, the first stirring blade, the second stirring shaft, and the second stirring blade. The first and second stirring blades are staggered, increasing the accommodating length of the first and second stirring blades, allowing for longer first and second stirring blades, thus improving the stirring efficiency of the stirring mechanism. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is an exploded view of the heating vessel, stirring mechanism, and protective components of this application; Figure 3 This is an exploded view of the vessel lid of this application; Figure 4 This is a schematic diagram of the stirring mechanism of this application; Figure 5 This is a schematic diagram of the opening and closing components of this application.

[0026] In the diagram, 1. Base; 2. Heating vessel; 21. Vessel body; 211. Sealing groove; 22. Vessel lid; 221. Center plate; 222. Outer ring plate; 223. Ear plate; 23. Heat insulation sealing strip; 3. Stirring mechanism; 31. Stirring motor; 32. Center gear; 33. Internal gear ring; 34. Planetary gear; 35. First stirring shaft; 36. First stirring blade; 37. Second stirring shaft; 38. Second stirring blade; 4. Filtration mechanism; 5. Crystallization mechanism; 6. Solvent recovery mechanism; 7. Opening and closing assembly; 71. Gantry frame; 72. Drive motor; 73. Screw; 74. Guide rod; 75. Electric guide rail; 8. Bearing; 9. Protective assembly; 91. Protective enclosure; 92. Protective cover. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0028] This application discloses a recrystallization and purification apparatus for the production of quaternary ammonium salt-73. (Refer to...) Figure 1 A recrystallization and purification device for the production of quaternary ammonium salt-73 includes a base 1, a heating vessel 2, a stirring mechanism 3, a filtering mechanism 4, a crystallization mechanism 5, a solvent recovery mechanism 6, an opening and closing assembly 7, and a protective assembly 9. The heating vessel 2, the filtering mechanism 4, the crystallization mechanism 5, and the solvent recovery mechanism 6 are connected in sequence, and all of them are placed on the upper surface of the base 1.

[0029] Reference Figure 1 and Figure 2 The heating vessel 2 includes a vessel body 21 and a vessel lid 22. Quaternary ammonium salt inlets and solvent inlets are respectively installed on the front and rear sides of the vessel body 21. A sealing groove 211 is formed on the upper surface of the vessel body 21, and a heat-insulating sealing strip 23 is installed within the sealing groove 211. After the vessel lid 22 is placed on the vessel body 21, the bottom surface of the vessel lid 22 abuts against the upper surface of the heat-insulating sealing strip 23. This improves the sealing performance of the vessel body 21 and the vessel lid 22, reduces heat loss within the vessel body 21, and thus reduces energy waste.

[0030] Reference Figure 1-3The vessel lid 22 includes a center plate 221 and an outer ring plate 222. An outer ring sleeve is fixedly installed at the outer edge of the end face of the center plate 221. An inner ring sleeve is fixedly installed at the inner edge of the end face of the outer ring plate 222. The outer ring sleeve and the inner ring sleeve are connected by a bearing 8. This reduces rotational friction and facilitates relative rotation between the center plate 221 and the outer ring plate 222. Ear plates 223 are fixedly installed on both opposite sides of the outer ring plate 222. Each ear plate 223 has an integrally formed thickened pad. A threaded hole is formed on the upper surface of one ear plate 223, and a through hole is formed on the upper surface of the other ear plate 223.

[0031] Reference Figure 1 , Figure 2 as well as Figure 4 The stirring mechanism 3 includes a stirring motor 31, a central gear 32, an internal gear ring 33, a planetary gear 34, a first stirring shaft 35, a first stirring blade 36, a second stirring shaft 37, and a second stirring blade 38. The stirring motor 31 is fixedly mounted on the protective assembly 9. A first rotating shaft is fixedly mounted on the central gear 32. The central gear 32 is rotatably mounted at the center of the central plate 221 via the first rotating shaft. The central gear 32 is fixedly connected to the output end of the stirring motor 31 via the first rotating shaft. The first rotating shaft extends into the vessel body 21, and a first connecting sleeve is fixedly attached to one end of the first rotating shaft in the vessel body 21. The first stirring shaft 35 is inserted into the first connecting sleeve, and the first stirring shaft 35 is fixedly connected to the first connecting sleeve by bolts. Multiple sets of first stirring blades 36 are evenly arranged along the axial direction of the first stirring shaft 35, and the first stirring blades 36 are fixedly mounted on the first stirring shaft 35.

[0032] Reference Figure 1 , Figure 2 as well as Figure 4 Start the stirring motor 31. The stirring motor 31 can drive the central gear 32 to rotate. The rotation of the central gear 32 can drive the first stirring shaft 35 to rotate, so that the first stirring blade 36 can stir the quaternary ammonium salt-73 and solvent in the vessel body 21.

[0033] Reference Figure 1 , Figure 2 as well as Figure 4The internal gear ring 33 is fixedly mounted on the outer ring plate 222. Three planetary gears 34 are provided, evenly distributed circumferentially outside the central gear 32. The planetary gears 34 are rotatably mounted on the central plate 221 via a second rotating shaft. One side of the planetary gear 34 meshes with the central gear 32, and the other side meshes with the internal gear ring 33. The second rotating shaft extends into the vessel body 21, and a second connecting sleeve is fixed to one end of the second rotating shaft at the vessel body 21. The second stirring shaft 37 is inserted into the second connecting sleeve, and the second stirring shaft 37 is fixedly connected to the second connecting sleeve by bolts. Multiple sets of second stirring blades 38 are evenly arranged along the axial direction of the second stirring shaft 37, and the second stirring blades 38 are fixedly mounted on the first stirring shaft 35. The first stirring blade 36 and the second stirring blade 38 are staggered. Increasing the accommodating length of the first stirring blade 36 and the second stirring blade 38 allows for longer first stirring blades 36 and second stirring blades 38, improving the stirring efficiency of the stirring mechanism 3.

[0034] Reference Figure 1 , Figure 2 as well as Figure 4 The stirring motor 31 is started, which drives the central gear 32 to rotate. The rotation of the central gear 32 drives the planetary gear 34 to rotate in the opposite direction, and the planetary gear 34 rotates around the central gear 32. This causes the second stirring shaft 37 to rotate in the opposite direction and around the first stirring shaft 35. Consequently, the second stirring blade 38 stirs in the opposite direction and rotates around the first stirring shaft 35. This causes the quaternary ammonium salt-73 to diffuse in different directions, increasing the dissolution rate of the quaternary ammonium salt-73. Furthermore, the second stirring blade 38 stirs the solvent at different locations, making the stirring mechanism 3 more uniform in its mixing.

[0035] Reference Figure 1 , Figure 2 as well as Figure 4 The protective assembly 9 includes a protective barrier 91 and a protective cover 92. The protective barrier 91 is fixedly installed on the outside of the internal gear ring 33. The protective cover 92 is fixedly installed on the protective barrier 91. The stirring motor 31 is fixedly installed on the upper surface of the protective cover 92. This assembly can prevent external debris from damaging the central gear 32, the internal gear ring 33, and the planetary gear 34, thereby extending the service life of the central gear 32, the internal gear ring 33, and the planetary gear 34.

[0036] Reference Figure 1-5The opening and closing assembly 7 includes a portal frame 71, a drive motor 72, a screw 73, a guide rod 74, and electric guide rails 75. Two electric guide rails 75 are provided, symmetrically distributed on both sides of the heating vessel 2, and fixedly mounted on the upper surface of the base 1. The bottom sides of the portal frame 71 are respectively fixedly mounted on the sliders of the two electric guide rails 75. The drive motor 72 is fixedly mounted on one side of the upper surface of the portal frame 71. The screw 73 is rotatably mounted on the portal frame 71 on the side of the drive motor 72, and is fixedly connected to the output end of the drive motor 72. The guide rod 74 is fixedly mounted on the side of the portal frame 71 opposite to the drive motor 72. One side ear plate 223 is threadedly connected to the screw 73, and the other side ear plate 223 is slidably connected to the guide rod 74.

[0037] Reference Figure 1-5 The drive motor 72 is started, which drives the screw 73 to rotate. The rotation of the screw 73 causes the lid 22 to rise and fall, facilitating the opening and closing of the lid 22. After the lid 22 is opened, the electric guide rail 75 is started, which moves the lid 22 to the outside of the vessel body 21, facilitating the cleaning of the inner wall of the vessel body 21, the first stirring shaft 35, the first stirring blade 36, the second stirring shaft 37, and the second stirring blade 38.

[0038] The principle of the recrystallization and purification apparatus for producing quaternary ammonium salt-73 according to an embodiment of this application is as follows: When it is necessary to purify crude quaternary ammonium salt-73, quaternary ammonium salt-73 and solvent are added to the heating vessel 2 through the quaternary ammonium salt inlet and the solvent inlet. After the quaternary ammonium salt-73 and solvent are added to the heating vessel 2, the heating vessel 2 heats the quaternary ammonium salt-73 and the solvent. At the same time, the stirring motor 31 is started, which drives the first stirring shaft 35 and the second stirring shaft 37 to rotate. The first stirring shaft 35 and the second stirring shaft 37 rotate in opposite directions, so that the quaternary ammonium salt-73 diffuses in different directions, thereby increasing the dissolution rate of the quaternary ammonium salt-73. Moreover, the second stirring shaft 37 can rotate along the first stirring shaft 35, so that the second stirring blade 38 stirs the solvent at different positions, making the stirring mechanism 3 more uniform. After the quaternary ammonium salt-73 is completely dissolved in the solvent, the undissolved impurities are filtered by the filtration mechanism 4, the quaternary ammonium salt-73 is precipitated from the solvent by the crystallization mechanism 5, and the solvent is recovered by the solvent recovery mechanism 6.

[0039] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A recrystallization and purification apparatus for the production of quaternary ammonium salt-73, characterized in that: The system includes a heating vessel (2), a stirring mechanism (3), a filtering mechanism (4), a crystallization mechanism (5), and a solvent recovery mechanism (6). The heating vessel (2), the filtering mechanism (4), the crystallization mechanism (5), and the solvent recovery mechanism (6) are connected in sequence. The heating vessel (2) includes a vessel body (21) and a vessel cover (22). The vessel cover (22) is located at the opening of the vessel body (21). The vessel cover (22) includes a center plate (221) and an outer ring plate (222). The center plate (221) is rotatably mounted at the center of the outer ring plate (222). The stirring mechanism (3) includes a stirring motor (31), a central gear (32), an internal gear ring (33), a planetary gear (34), a first stirring shaft (35), a first stirring blade (36), a second stirring shaft (37), and a second stirring blade (38). The stirring motor (31) includes a stirring motor (32), a central gear (32), an internal gear ring (33), a planetary gear (34), a first stirring shaft (35), a first stirring blade (36), a second stirring shaft (37), and a second stirring blade (38). 1) The central gear (32) is fixedly connected to the outer ring plate (222). The central gear (32) is rotatably mounted on the center position of the central plate (221) through the first rotating shaft. The central gear (32) is fixedly connected to the output end of the stirring motor (31) through the first rotating shaft. The internal gear ring (33) is fixedly mounted on the outer ring plate (222). The planetary gear (34) is rotatably mounted on the central plate (221) through the second rotating shaft. One side of the planetary gear (34) meshes with the central gear (32), and the other side of the planetary gear (34) meshes with the internal gear ring (33). The first stirring shaft (35) is fixed to the first rotating shaft. The first stirring blade (36) is fixedly mounted on the first stirring shaft (35). The second stirring shaft (37) is fixed to the second rotating shaft. The second stirring blade (38) is fixedly mounted on the second stirring shaft (37).

2. The recrystallization and purification apparatus for the production of quaternary ammonium salt-73 according to claim 1, characterized in that: It also includes a base (1) and an opening and closing assembly (7). The heating vessel (2) is placed on the base (1). Ear plates (223) are fixedly installed on both sides of the outer ring plate (222). The opening and closing assembly (7) includes a gantry frame (71), a drive motor (72), a screw (73), and a guide rod (74). The gantry frame (71) is installed on the base (1). The drive motor (72) is fixedly installed on the gantry frame (71). The screw (73) is rotatably installed on the gantry frame (71), and the screw (73) is fixedly connected to the output end of the drive motor (72). The guide rod (74) is fixedly installed on the gantry frame (71). One ear plate (223) is threadedly connected to the screw (73), and the other ear plate (223) is slidably connected to the guide rod (74).

3. The recrystallization and purification apparatus for the production of quaternary ammonium salt-73 according to claim 2, characterized in that: Both sides of the ear plate (223) are fixedly installed with thickened pads at the connection with the opening and closing component (7).

4. The recrystallization and purification apparatus for the production of quaternary ammonium salt-73 according to claim 2, characterized in that: An electric guide rail (75) is fixedly installed on the base (1), and the slider of the electric guide rail (75) is fixedly connected to the bottom end of the gantry frame (71).

5. The recrystallization and purification apparatus for the production of quaternary ammonium salt-73 according to claim 2, characterized in that: A sealing groove (211) is provided on the upper surface of the vessel body (21), and a heat-insulating sealing strip (23) is installed in the sealing groove (211). After the vessel lid (22) is placed on the vessel body (21), the bottom surface of the vessel lid (22) abuts against the upper surface of the heat-insulating sealing strip (23).

6. The recrystallization and purification apparatus for the production of quaternary ammonium salt-73 according to claim 2, characterized in that: The first rotating shaft extends into the vessel body (21), and a first connecting sleeve is fixed at one end of the vessel body (21). The first stirring shaft (35) is inserted into the first connecting sleeve, and the first stirring shaft (35) and the first connecting sleeve are fixedly connected by bolts. The second rotating shaft extends into the vessel body (21), and a second connecting sleeve is fixed at one end of the vessel body (21). The second stirring shaft (37) is inserted into the second connecting sleeve, and the second stirring shaft (37) and the second connecting sleeve are fixedly connected by bolts.

7. The recrystallization and purification apparatus for the production of quaternary ammonium salt-73 according to claim 1, characterized in that: An outer ring sleeve is fixedly installed at the outer edge of the end face of the center plate (221), and an inner ring sleeve is fixedly installed at the inner edge of the end face of the outer ring plate (222). The outer ring sleeve and the inner ring sleeve are connected by a bearing (8).

8. The recrystallization and purification apparatus for the production of quaternary ammonium salt-73 according to claim 1, characterized in that: It also includes a protective component (9), which includes a protective enclosure (91) and a protective cover (92). The protective enclosure (91) is fixedly installed on the inner gear ring (33), the protective cover (92) is fixedly installed on the protective enclosure (91), and the stirring motor (31) is fixedly installed on the protective cover (92).

9. The recrystallization and purification apparatus for the production of quaternary ammonium salt-73 according to claim 1, characterized in that: Multiple sets of the first stirring blade (36) are arranged along the first stirring shaft (35), and multiple sets of the second stirring blade (38) are arranged along the second stirring shaft (37). The first stirring blade (36) and the second stirring blade (38) are arranged alternately.

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