Cooling crystallization kettle for magnesium sulfate heptahydrate

Abstract

The utility model relates to the field of magnesium sulfate heptahydrate, in particular to a magnesium sulfate heptahydrate cooling crystallization kettle. According to the technical scheme, the magnesium sulfate heptahydrate cooling crystallization kettle comprises a support frame, a crystallization kettle, a large cover plate, a small cover plate, a servo motor, a rotating shaft, a stirring frame, a convex rod and the like, a large cover plate is slidably connected to the top of the crystallization kettle, small cover plates are symmetrically slidably connected to the large cover plate, a servo motor is mounted at the bottom of the crystallization kettle, an output shaft of the servo motor penetrates through the bottom of the crystallization kettle and is connected with a rotating shaft through a coupler, a stirring frame is connected to the rotating shaft, and a convex rod is fixedly connected to the top side of the rotating shaft. According to the cooling crystallization kettle for the magnesium sulfate heptahydrate, the flowing-in speed of the magnesium sulfate heptahydrate can be controlled and the magnesium sulfate heptahydrate can be uniformly dispersed through the first inclined plate, the second inclined plate and the like, so that the cooling crystallization of the magnesium sulfate heptahydrate is realized, and the practicability and the production quality of the cooling crystallization kettle for the magnesium sulfate heptahydrate are improved.

Description

Technical Field

[0001] The utility model relates to the field of magnesium sulfate heptahydrate, in particular to a magnesium sulfate heptahydrate cooling crystallization kettle. Background Art

[0002] Magnesium sulfate heptahydrate, also known as bitter sulfur, bitter salt, epsom salt, or epsom salt, has a chemical formula of MgSO4·7H2O. It is a white or colorless needle-shaped or oblique columnar crystal that is odorless, cool, and slightly bitter. It decomposes when heated, gradually losing its crystal water and becoming anhydrous magnesium sulfate.

[0003] In the production of magnesium sulfate heptahydrate, the hydrated crystals before cooling are generally around 50°C. Cooling water is introduced into the outer jacket of the crystallization kettle to cool and crystallize the solution. During the cooling process, magnesium sulfate in the solution precipitates as crystals. This process is called crystallization. Magnesium sulfate heptahydrate is continuously precipitated during the cooling process of the magnesium sulfate solution by sufficient stirring. However, in existing magnesium sulfate heptahydrate cooling crystallization kettles, the magnesium sulfate solution is poured directly into the crystallization kettle from an open area during stirring. Rapid pouring may cause local supersaturation of the solution, triggering rapid crystallization and forming larger crystal nuclei. This makes the resulting crystal size distribution uneven, affecting product quality. In addition, the rapidly poured solution may not easily mix fully with the existing crystal slurry, resulting in large local concentration differences and hindering uniform crystallization.

[0004] Based on the above situation, the utility model proposes a magnesium sulfate heptahydrate cooling crystallization kettle which uniformly disperses the magnesium sulfate solution to ensure the quality of cooling crystallization. Utility Model Content

[0005] In order to overcome the shortcomings of the above-mentioned prior art that magnesium sulfate solution is quickly poured into the solution, resulting in local oversaturation and precipitation of crystals, and poor cooling crystallization quality, the purpose of the utility model is to provide a magnesium sulfate heptahydrate cooling crystallization kettle that evenly disperses magnesium sulfate solution to ensure the quality of cooling crystallization.

[0006] Technical solution: It includes a support frame, a crystallization kettle, a large cover plate, a small cover plate, a servo motor, a rotating shaft, a stirring frame, a convex rod, a connecting rod, a shell, a contact rod, a first inclined plate, a second inclined plate and a rotating block. The upper part of the support frame is connected to the crystallization kettle, the top of the crystallization kettle is slidingly connected to the large cover plate, the large cover plate is symmetrically slidably connected to the small cover plate, the bottom of the crystallization kettle is installed with a servo motor, the output shaft of the servo motor passes through the bottom of the crystallization kettle and is connected to the rotating shaft through a coupling, the stirring frame is connected to the rotating shaft, the top side of the rotating shaft is fixed with a convex rod, the middle part of the large cover plate is rotatably connected to the rotating block, the rotating block is connected to the connecting rod, the upper part of the connecting rod is connected to the shell, the bottom of the connecting rod is symmetrically connected to the contact rod, the middle of the connecting rod is slidingly connected to the first inclined plate, and the lower part of the connecting rod is fixed with the second inclined plate.

[0007] In addition, it also includes a spring, a convex ring and a fixed block. The spring is wound on the connecting rod, and the two ends of the spring are respectively connected to the first inclined plate and the rotating block. The upper part of the first inclined plate is connected to the convex ring, and the fixed block is symmetrically connected to the large cover plate. The fixed block is squeezed into fit with the convex ring.

[0008] In addition, it is particularly preferred that a temperature control plate and a display are further included, the temperature control plate is connected to the outside of the crystallization kettle, and the upper front part of the crystallization kettle is connected to the display.

[0009] In addition, it is particularly preferred that a dispersion plate is further included, and the first inclined plate and the second inclined plate are fixedly connected with a plurality of dispersion plates in a uniform manner in the circumferential direction, so that the fallen magnesium sulfate heptahydrate is evenly dispersed.

[0010] In addition, it is particularly preferred that the stirring frame is made of polytetrafluoroethylene, which is conducive to stirring magnesium sulfate heptahydrate.

[0011] In addition, it is particularly preferred that the protruding rod is made of steel, which is conducive to withstanding vibrations caused by impact.

[0012] The beneficial effects are as follows: 1. The utility model can control the inflow speed of magnesium sulfate heptahydrate and evenly disperse the magnesium sulfate heptahydrate through components such as the first inclined plate and the second inclined plate, thereby realizing cooling crystallization of magnesium sulfate heptahydrate, and improving the practicality and production quality of a magnesium sulfate heptahydrate cooling crystallization kettle.

[0013] 2. The utility model makes the magnesium sulfate heptahydrate on the first inclined plate more evenly dispersed by means of components such as a convex ring and a fixed block, thereby being more conducive to the cooling and crystallization of the magnesium sulfate heptahydrate, thereby improving the practicality and production quality of a magnesium sulfate heptahydrate cooling and crystallization kettle.

[0014] 3. The utility model can facilitate manual monitoring and control of the temperature of the magnesium sulfate heptahydrate cooling crystallization through the temperature control plate and the display, thereby being more conducive to the magnesium sulfate heptahydrate cooling crystallization and improving the production quality of a magnesium sulfate heptahydrate cooling crystallization kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 This is a schematic cross-sectional view of the crystallization kettle, servo motor, stirring frame, etc. of the present invention.

[0017] Figure 3 It is a schematic cross-sectional structural diagram of the inclined plate, scraper and rotating block of the utility model.

[0018] Figure 4 It is a schematic cross-sectional structural diagram of the convex rod, contact rod and inclined plate of the utility model.

[0019] Figure 5It is a schematic cross-sectional structural diagram of the convex rod, contact rod and rotating block of the utility model.

[0020] Figure 6 It is a schematic cross-sectional structural diagram of the inclined plate, convex ring and fixed block of the utility model.

[0021] Figure 7 It is a schematic diagram of the exploded structure of the inclined plate and the convex ring of the utility model.

[0022] In the accompanying drawings: 1-support frame, 2-crystallization kettle, 21-large cover plate, 22-small cover plate, 3-servo motor, 31-rotating shaft, 4-stirring frame, 5-convex rod, 6-connecting rod, 61-housing, 62-contact rod, 7-first inclined plate, 8-second inclined plate, 9-rotating block, 10-spring, 11-convex ring, 12-fixed block, 13-temperature control plate, 14-display. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] A magnesium sulfate heptahydrate cooling crystallization kettle, such as Figure 1-Figure 7 As shown, it includes a support frame 1, a crystallization kettle 2, a large cover plate 21, a small cover plate 22, a servo motor 3, a rotating shaft 31, a stirring frame 4, a convex rod 5, a connecting rod 6, a shell 61, a contact rod 62, a first inclined plate 7, a second inclined plate 8 and a rotating block 9. The upper part of the support frame 1 is connected to the crystallization kettle 2, the top of the crystallization kettle 2 is slidingly connected to the large cover plate 21, and the small cover plate 22 is symmetrically slidingly connected on the large cover plate 21. The servo motor 3 is fixedly installed at the bottom of the crystallization kettle 2, and the output shaft of the servo motor 3 passes through the bottom of the crystallization kettle 2 and is connected to the rotating shaft 31 through a coupling. The rotating shaft 31 is fixedly connected to the stirring frame 4, and the stirring frame 4 is made of polytetrafluoroethylene, which is conducive to stirring magnesium sulfate heptahydrate. A convex rod 5 is fixedly connected to the top side of the rotating shaft 31. The convex rod 5 is made of steel, which is conducive to withstanding impact and vibration. The middle part of the large cover plate 21 is rotatably connected to a rotating block 9. The rotating block 9 is connected to a connecting rod 6. The upper part of the connecting rod 6 is connected to a shell 61. The bottom of the connecting rod 6 is symmetrically connected to a contact rod 62. The convex rod 5 and the contact rod 62 are squeezed and matched to drive the connecting rod 6 to rotate. The middle part of the connecting rod 6 is slidably connected to a first inclined plate 7. The lower part of the connecting rod 6 is fixed with a second inclined plate 8. The first inclined plate 7 and the second inclined plate 8 are used to slow down and evenly disperse the magnesium sulfate heptahydrate.

[0026] like Figure 6 and Figure 7 As shown, a dispersion plate is also included. The first inclined plate 7 and the second inclined plate 8 are fixed with multiple dispersion plates in a uniform manner in the circumferential direction, so that the falling magnesium sulfate heptahydrate is evenly dispersed.

[0027] In the existing magnesium sulfate heptahydrate cooling crystallization kettle, when stirring, the magnesium sulfate solution is poured directly into the crystallization kettle from the open part. Pouring quickly may cause local supersaturation of the solution, triggering rapid crystallization and affecting product quality. Therefore, the following operations can be performed: first, the servo motor 3 is manually controlled to start, driving the rotating shaft 31 to rotate, and then driving the stirring frame 4 and the protruding rod 5 to rotate. Under the squeezing action of the protruding rod 5 and the contact rod 62, the connecting rod 6 is driven to rotate, and then the first inclined plate 7, the second inclined plate 8 and the rotating block 9 also rotate. At this time, the small cover plate 22 is opened, and the magnesium sulfate solution is poured from the small cover plate 22 into the crystallization kettle 2. The poured magnesium sulfate solution will pass through the first inclined plate 7 and the second inclined plate 8, and through the dispersion plates on the first inclined plate 7 and the second inclined plate 8, thereby achieving dispersion treatment of magnesium sulfate heptahydrate and slowing down the flow rate. Subsequently, the magnesium sulfate solution passes through the first inclined plate 7 and the second inclined plate 8 and flows into the lower part of the crystallization kettle 2, and is stirred by the stirring rack 4 and the crystallization kettle 2 is cooled to achieve precipitation of magnesium sulfate heptahydrate by cooling crystallization. After the treatment is completed, the servo motor 3 is manually turned off, and the large cover plate 21 is manually opened to take out the connecting rod 6, the housing 61, the contact rod 62, the first inclined plate 7, the second inclined plate 8 and the rotating block 9, and then take out the precipitated crystals, thereby ensuring the quality of the crystallization.

[0028] Example 2

[0029] On the basis of Example 1, Figure 3-Figure 7 As shown, it also includes a spring 10, a convex ring 11 and a fixed block 12. The spring 10 is wound on the connecting rod 6. The two ends of the spring 10 are respectively connected to the first inclined plate 7 and the rotating block 9. The spring 10 is used to drive the first inclined plate 7 to reset. The upper part of the first inclined plate 7 is connected to the convex ring 11. The front and rear parts of the large cover plate 21 are symmetrically connected with the fixed blocks 12. The fixed block 12 is squeezed and matched with the convex ring 11 to drive the first inclined plate 7 to shake up and down.

[0030] When the magnesium sulfate solution is manually poured into the crystallization kettle 2, it will first flow through the first inclined plate 7. At this time, the servo motor 3 is controlled to start, driving the rotating shaft 31 to rotate. Through the action of the convex rod 5 and the contact rod 62, the first inclined plate 7 is rotated. When the convex ring 11 on the first inclined plate 7 rotates to contact with the fixed block 12, the convex ring 11 drives the first inclined plate 7 to move downward. At this time, the spring 10 is stretched. When the first inclined plate 7 continues to rotate until the convex ring 11 is out of contact with the fixed block 12, the spring 10 is reset, driving the first inclined plate 7 to reset, thereby achieving a more uniform dispersion of the poured magnesium sulfate solution and improving the production quality of magnesium sulfate heptahydrate.

[0031] like Figure 1 As shown, a temperature control plate 13 and a display 14 are also included. The outside of the crystallization kettle 2 is connected to the temperature control plate 13, and the upper front part of the crystallization kettle 2 is connected to the display 14. The display 14 can display the temperature inside the crystallization kettle 2 in real time, which is conducive to manual monitoring of the internal temperature of the crystallization kettle 2.

[0032] When the temperature of the crystallization kettle 2 is too high or too low, people can see it through the display 14, and adjust the temperature in the crystallization kettle 2 by adjusting the temperature control plate 13 to reach the appropriate temperature for precipitating magnesium sulfate heptahydrate.

[0033] It should be understood that the embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A magnesium sulfate heptahydrate cooling crystallization kettle, characterized in that it comprises The invention comprises a support frame (1), a crystallization kettle (2), a large cover plate (21), a small cover plate (22), a servo motor (3), a rotating shaft (31), a stirring frame (4), a protruding rod (5), a connecting rod (6), a shell (61), a contact rod (62), a first inclined plate (7), a second inclined plate (8) and a rotating block (9); the upper part of the support frame (1) is connected to the crystallization kettle (2); the top of the crystallization kettle (2) is connected to the large cover plate (21) in a sliding manner; the large cover plate (21) is symmetrically connected to the small cover plate (22) in a sliding manner; the bottom of the crystallization kettle (2) is equipped with a servo motor (3); The output shaft of the servo motor (3) passes through the bottom of the crystallization kettle (2) and is connected to a rotating shaft (31) through a coupling. The rotating shaft (31) is connected to a stirring frame (4). The top side of the rotating shaft (31) is fixedly connected to a protruding rod (5). The middle part of the large cover plate (21) is rotatably connected to a rotating block (9). The rotating block (9) is connected to a connecting rod (6). The upper part of the connecting rod (6) is connected to a housing (61). The bottom of the connecting rod (6) is symmetrically connected to a contact rod (62). The middle part of the connecting rod (6) is slidably connected to a first inclined plate (7). The lower part of the connecting rod (6) is fixedly connected to a second inclined plate (8).

2. a kind of magnesium sulfate heptahydrate cooling crystallization kettle as claimed in claim 1, is characterized in that, The invention also includes a spring (10), a convex ring (11) and a fixed block (12). The spring (10) is wound on the connecting rod (6). The two ends of the spring (10) are respectively connected to the first inclined plate (7) and the rotating block (9). The upper part of the first inclined plate (7) is connected to the convex ring (11). The large cover plate (21) is symmetrically connected to the fixed block (12). The fixed block (12) and the convex ring (11) are extruded and matched.

3. a kind of magnesium sulfate heptahydrate crystallization cooling kettle as claimed in claim 2, is characterized in that, The crystallization kettle (2) further comprises a temperature control plate (13) and a display (14). The outside of the crystallization kettle (2) is connected to the temperature control plate (13), and the upper front portion of the crystallization kettle (2) is connected to the display (14).

4. a kind of magnesium sulfate heptahydrate cooling crystallization kettle as claimed in claim 3, is characterized in that, It also includes a dispersion plate, and the first inclined plate (7) and the second inclined plate (8) are fixedly connected to a plurality of dispersion plates in a uniform manner in the circumferential direction, thereby achieving uniform dispersion of the fallen magnesium sulfate heptahydrate.

5. a kind of magnesium sulfate heptahydrate cooling crystallization kettle as claimed in claim 4, is characterized in that, The stirring frame (4) is made of polytetrafluoroethylene, which is conducive to stirring magnesium sulfate heptahydrate.

6. A magnesium sulfate heptahydrate cooling crystallization kettle as claimed in claim 5, characterized in that, The material of the convex rod (5) is steel, which is conducive to enduring the vibration caused by impact.

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