Efficient crystallization device for magnesium sulfate heptahydrate

Abstract

The utility model relates to the technical field of magnesium sulfate heptahydrate crystallization equipment, in particular to a high-efficiency magnesium sulfate heptahydrate crystallization device, which is characterized in that a power device and a temperature setting device are arranged to stir and set the temperature of a magnesium sulfate solution inside, so that the cooling speed is increased, and the production efficiency is improved; comprising a body; a power device, a constant temperature device, a stirring device, a transmission device and a plurality of material pushing plates are further included, the power device, the stirring device and the transmission device are all installed on the machine body, the constant temperature device is installed on the power device, and the material pushing plates are all installed on the stirring device; the machine body is used for containing a magnesium sulfate solution, the power device provides power for the constant temperature device, the stirring device and the material pushing plate, the constant temperature device is used for stirring the magnesium sulfate solution in a temperature control manner, the stirring device is used for stirring the magnesium sulfate solution, the transmission device is used for transmitting the power, and the material pushing plate is used for conveying magnesium sulfate crystals.

Description

Technical Field

[0001] This utility model relates to the technical field of magnesium sulfate heptahydrate crystallization equipment, and in particular to a high-efficiency magnesium sulfate heptahydrate crystallization device. Background Technology

[0002] Magnesium sulfate heptahydrate, also known as thiopicrosite, bitter salt, esperidin salt, or Epsom salt, is usually produced by cooling and crystallizing a magnesium sulfate solution.

[0003] Existing magnesium sulfate heptahydrate crystallization equipment, such as the Chinese utility model patent CN211912788U (a high-efficiency cooling crystallization kettle for magnesium sulfate), represents a class of prior art whose main structure includes a crystallization cylinder, a stirring device, a scraper, and a jacket. The crystallization cylinder holds the magnesium sulfate solution, the stirring device stirs the magnesium sulfate solution, the scraper scrapes off the magnesium sulfate crystals solidified on the inner wall of the crystallization cylinder, and the jacket cools the crystallization cylinder.

[0004] However, the existing technology and equipment still have the following problems when in use: cooling the inside of the crystallizer by cooling the outer wall of the crystallizer is slow and the production efficiency is low. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a high-efficiency crystallization device for magnesium sulfate heptahydrate, which improves the cooling rate and production efficiency by setting up a power unit and a temperature control device to stir and control the temperature of magnesium sulfate solution inside.

[0006] This utility model discloses a high-efficiency crystallization device for magnesium sulfate heptahydrate, comprising a machine body; it also includes a power unit, a temperature control unit, a stirring unit, a transmission unit, and multiple pusher plates. The power unit, stirring unit, and transmission unit are all mounted on the machine body, the temperature control unit is mounted on the power unit, and the multiple pusher plates are mounted on the stirring unit. The machine body holds the magnesium sulfate solution, the power unit provides power to the temperature control unit, the stirring unit, and the pusher plates, the temperature control unit controls the temperature and stirs the magnesium sulfate solution, the stirring unit stirs the magnesium sulfate solution, the transmission unit transmits the power, and the pusher plates transport the magnesium sulfate crystals.

[0007] Preferably, the machine body includes multiple support bases, multiple brackets 1 and 2, a crystallizing vessel, a solenoid valve 1, a solenoid valve 2, and a hopper. Multiple brackets 1 are respectively installed on the top of multiple support bases, bracket 2 is installed on the top of multiple brackets 1, the crystallizing vessel is installed on bracket 2, the top of the crystallizing vessel is provided with a through hole and a feed hole, the bottom of the crystallizing vessel is provided with an installation hole and a discharge hole, solenoid valve 1 is installed at the bottom of the discharge hole of the crystallizing vessel, solenoid valve 2 is installed at the top of the feed hole of the crystallizing vessel, and the hopper is installed at the top of solenoid valve 2. The crystallizing vessel holds the magnesium sulfate solution, solenoid valve 1 controls the discharge of the solution inside the crystallizing vessel, solenoid valve 2 controls the entry of the solution into the crystallizing vessel, and the hopper facilitates the pouring of solution into the crystallizing vessel.

[0008] Preferably, the power unit includes a support three, a reducer, a motor, a pulley one, multiple belts, a pulley two, a support four, and a dual-channel rotary joint. The support three is fixedly installed on the side of the crystallization vessel, the reducer is fixedly installed on the bottom of the support three, the motor is fixedly installed on the bottom of the reducer, the pulley one is rotatably installed on the top of the support three, and the pulley one passes through the support three and is rotatably connected to the reducer. The motor provides power to the pulley one through the reducer. The pulley two is rotatably installed on the top of the through hole of the crystallization vessel. Multiple belts are installed on the pulley one and the pulley two. The support four is fixedly installed on the top of the crystallization vessel. The top of the dual-channel rotary joint is fixedly installed on the side of the support four, and the bottom of the dual-channel rotary joint is fixedly connected to the pulley two. The dual-channel rotary joint is provided with a non-interfering water inlet and a water outlet. The motor provides power, which is transmitted through the reducer, pulley one, belts, and pulley two to drive the dual-channel rotary joint to rotate. The rotation of the dual-channel rotary joint facilitates the introduction of water at a constant temperature into the constant temperature device during rotation.

[0009] Preferably, the temperature control device includes a rotating shaft, multiple supports (5), and pipes. The rotating shaft passes through the through-hole and mounting hole of the crystallizer and is fixedly installed at the bottom of the dual-channel rotary joint. The multiple supports (5) are fixedly installed on the side of the rotating shaft, and each of the multiple supports (5) has multiple holes (1). The pipes are coiled and installed on the multiple supports (5), and the inlet and outlet of the pipes are connected through the dual-channel rotary joint and the inlet and outlet of the dual-channel rotary joint, respectively. The pipes carry water at a constant temperature introduced by the dual-channel rotary joint to maintain the temperature of the magnesium sulfate solution inside the crystallizer, thereby realizing the crystallization operation of magnesium sulfate crystals with different structures. The rotating shaft rotates with the dual-channel rotary joint, and the rotation of the rotating shaft drives the supports (5) and pipes to rotate. The rotation of the supports (5) stirs the magnesium sulfate solution. The holes (1) of the supports (5) can reduce the stirring resistance and improve the stirring effect. The rotation of the pipes facilitates rapid temperature control of the magnesium sulfate solution.

[0010] Preferably, the stirring device includes a support six and multiple support brackets. The support six is ​​mounted on a rotating shaft and rotatably installed in the mounting hole of the crystallization vessel. The top of the support six has multiple holes two. Multiple support brackets are evenly spaced on the top of the support six, and each of the multiple support brackets has multiple holes three. Each of the multiple support brackets has a slight tilt angle relative to the support six. The support six and the support brackets rotate in opposite directions relative to the rotating shaft due to the power transmitted by the transmission device, which can prevent the magnesium sulfate solution from forming a vortex during stirring and improve the stirring effect. The generated magnesium sulfate crystals flow through the holes two of the support six to the bottom of the crystallization vessel. At this point, the magnesium sulfate solution is less affected by stirring, allowing the magnesium sulfate crystals to deposit. At the same time, when the support six rotates, it generates centrifugal force in the magnesium sulfate solution at this point, thereby automatically causing the deposited magnesium sulfate crystals to flow to the discharge hole on the crystallization vessel that is offset from the axis of the crystallization vessel, realizing the discharge of magnesium sulfate crystals. The holes three of the support brackets can reduce stirring resistance and improve stirring effect. The tilt angle of the support brackets guides the magnesium sulfate crystals to flow to the bottom of the crystallization vessel when rotating.

[0011] Preferably, the transmission device includes a gear ring, gear one, gear two, gear three, gear four, and bracket eight. The gear ring is fixedly mounted on the bottom of bracket six. Gear one and gear two are rotatably mounted on the bottom of the crystallization vessel, and gear one meshes with the gear ring. Gear one and gear two mesh with each other. Gear three is fixedly mounted on the bottom of gear two. Gear four is fixedly mounted on the bottom of the rotating shaft, and gear three and gear four mesh with each other. The number of teeth of the gear ring, gear two, and gear four are all equal. The number of teeth of gear one and gear three are equal. Bracket eight is mounted on the bottom of the crystallization vessel and completely covers the gear ring, gear one, gear two, gear three, and gear four. Gear four rotates with the rotating shaft. Gear three, gear two, gear one, and gear ring are driven to rotate by gear four. Gear one, gear two, and gear three cooperate to make the gear ring and gear four rotate in opposite directions at the same speed.

[0012] Preferably, the plurality of pusher plates are evenly spaced on the support six, and all the pusher plates are located inside the crystallization vessel; the pusher plates rotate with the support six, and when the pusher plates rotate, they push the magnesium sulfate crystals away from the axis of the crystallization vessel, thereby accelerating the discharge of magnesium sulfate crystals and preventing the magnesium sulfate crystals inside the crystallization vessel from blocking the machine and affecting its operation.

[0013] Compared with the prior art, the advantages of this utility model are: by stirring and keeping the temperature constant, magnesium sulfate solution is cooled and crystallized at a constant temperature, resulting in a higher cooling rate and higher production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the isometric cross-sectional structure of this utility model;

[0016] Figure 3 This is a front view structural diagram of the fuselage;

[0017] Figure 4 This is an isometric structural diagram of the power unit;

[0018] Figure 5 This is a schematic diagram of the isometric cross-sectional structure of the isothermal device;

[0019] Figure 6 This is an isometric sectional view of the stirring device and the transmission device.

[0020] Figure 7 This is a bottom view of the pusher plate structure.

[0021] The attached diagram is labeled as follows: 01. Machine body; 11. Support base; 12. Bracket 1; 13. Bracket 2; 14. Crystallizer; 15. Solenoid valve 1; 16. Solenoid valve 2; 17. Hopper; 02. Power unit; 21. Bracket 3; 22. Reducer; 23. Motor; 24. Pulley 1; 25. Belt; 26. Pulley 2; 27. Bracket 4; 28. Double-pass rotary joint; 03. Temperature control device; 31. Rotating shaft; 32. Bracket 5; 33. Pipeline; 04. Stirring device; 41. Bracket 6; 42. Bracket 7; 05. Transmission device; 51. Gear ring; 52. Gear 1; 53. Gear 2; 54. Gear 3; 55. Gear 4; 56. Bracket 8; 06. Pusher plate. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0023] Example 1

[0024] like Figure 1 and Figure 2 As shown, the device includes a body 01; it also includes a power unit 02, a temperature control device 03, a stirring device 04, a transmission device 05, and multiple pusher plates 06. The power unit 02, the stirring device 04, and the transmission device 05 are all mounted on the body 01, the temperature control device 03 is mounted on the power unit 02, and the multiple pusher plates 06 are all mounted on the stirring device 04. The body 01 holds the magnesium sulfate solution, the power unit 02 provides power to the temperature control device 03, the stirring device 04, and the pusher plates 06, the temperature control device 03 controls the temperature and stirs the magnesium sulfate solution, the stirring device 04 stirs the magnesium sulfate solution, the transmission device 05 transmits the power, and the pusher plates 06 transport the magnesium sulfate crystals.

[0025] like Figure 3 As shown, the machine body 01 includes multiple support bases 11, multiple brackets 12, brackets 13, crystallizer 14, solenoid valve 15, solenoid valve 16, and hopper 17. Multiple brackets 12 are respectively installed on the top of multiple support bases 11, brackets 13 are installed on the top of multiple brackets 12, crystallizer 14 is installed on brackets 13, crystallizer 14 is provided with a through hole and a feed hole at the top, crystallizer 14 is provided with an installation hole and a discharge hole at the bottom, solenoid valve 15 is installed at the bottom of the discharge hole of crystallizer 14, solenoid valve 16 is installed at the top of the feed hole of crystallizer 14, and hopper 17 is installed at the top of solenoid valve 16.

[0026] like Figure 4 As shown, the power unit 02 includes a support 3 21, a reducer 22, a motor 23, a pulley 1 24, multiple belts 25, a pulley 26, a support 4 27, and a dual-channel rotary joint 28. The support 3 21 is fixedly installed on the side of the crystallization vessel 14, the reducer 22 is fixedly installed on the bottom of the support 3 21, the motor 23 is fixedly installed on the bottom of the reducer 22, the pulley 1 24 is rotatably installed on the top of the support 3 21, and the pulley 1 24 passes through the support 3 21 and is rotatably connected to the reducer 22. The motor 23 provides power to the pulley 1 24 through the reducer 22. The pulley 26 is rotatably installed on the top of the through hole of the crystallization vessel 14. Multiple belts 25 are installed on the pulley 1 24 and the pulley 2 26. The support 4 27 is fixedly installed on the top of the crystallization vessel 14. The top of the dual-channel rotary joint 28 is fixedly installed on the side of the support 4 27, and the bottom of the dual-channel rotary joint 28 is fixedly connected to the pulley 26. The dual-channel rotary joint 28 is provided with a water inlet and a water outlet that do not interfere with each other.

[0027] like Figure 5 As shown, the constant temperature device 03 includes a rotating shaft 31, multiple brackets 32, and a pipe 33. The rotating shaft 31 passes through the through hole and mounting hole of the crystallizing vessel 14 and is fixedly installed at the bottom of the dual-channel rotary joint 28. The multiple brackets 32 are all fixedly installed on the side of the rotating shaft 31. The multiple brackets 32 are respectively provided with multiple holes. The pipe 33 is coiled and installed on the multiple brackets 32, and the inlet and outlet of the pipe 33 are connected through the dual-channel rotary joint 28 and the water inlet and water outlet of the dual-channel rotary joint 28, respectively.

[0028] like Figure 6 As shown, the stirring device 04 includes a support 41 and multiple support members 42. The support 41 is mounted on the rotating shaft 31 and is rotatably installed in the mounting hole of the crystallizing vessel 14. The top of the support 41 is provided with multiple holes 2. Multiple support members 42 are evenly spaced on the top of the support 41 and are provided with multiple holes 3. Each of the multiple support members 42 has a slight tilt angle relative to the support 41.

[0029] like Figure 6 As shown, the transmission device 05 includes a gear ring 51, gear 1 52, gear 2 53, gear 3 54, gear 4 55, and bracket 8 56. The gear ring 51 is fixedly mounted on the bottom of bracket 6 41. Gear 1 52 and gear 2 53 are rotatably mounted on the bottom of the crystallization vessel 14, and gear 1 52 meshes with the gear ring 51, gear 1 52 meshes with gear 2 53, gear 3 54 is fixedly mounted on the bottom of gear 2 53, and gear 4 55 is fixedly mounted on the bottom of the rotating shaft 31, and gear 3 54 meshes with gear 4 55. The number of teeth of the gear ring 51, gear 2 53, and gear 4 55 are all equal, and the number of teeth of gear 1 52 and gear 3 54 are equal. Bracket 8 56 is mounted on the bottom of the crystallization vessel 14 and completely covers the gear ring 51, gear 1 52, gear 2 53, gear 3 54, and gear 4 55.

[0030] First, open solenoid valve 16 to pour sufficient hot magnesium sulfate solution into crystallizing vessel 14 through hopper 17. Then, open the inlet and outlet of dual-channel rotary joint 28 to introduce water at a constant temperature into pipe 33 according to the required type of magnesium sulfate crystals, allowing the magnesium sulfate solution to be cooled and crystallized at a constant temperature. Next, turn on motor 23, which provides power. This power is transmitted through reducer 22, pulley 24, belt 25, and pulley 26, driving a portion of dual-channel rotary joint 28 to rotate. Shaft 31 rotates along with this portion of the joint. The rotation of shaft 31 drives support 32 and pipe 33 to rotate. Support 32 stirs the magnesium sulfate solution; its holes reduce stirring resistance and improve stirring effect. Pipe 33 facilitates rapid temperature control of the magnesium sulfate solution. Gear 4 55 rotates with shaft 31. Gear 3 54, gear 2 53, gear 1 52, and gear... Ring 51 rotates under the drive of gear 455, and gears 152, 253, and 354 cooperate to make ring 51 and gear 45 rotate in opposite directions at the same speed. Support 6 41 and support device 42 rotate in opposite directions relative to the rotating shaft 31 due to the power transmitted by gear 45, which can prevent the magnesium sulfate solution from forming a vortex during stirring and improve the stirring effect. The generated magnesium sulfate crystals flow through hole 2 of support 6 41 to the bottom of the crystallization vessel 14. At this point, the magnesium sulfate solution is less affected by stirring, allowing the magnesium sulfate crystals to be deposited. At the same time, when support 6 41 rotates, it generates centrifugal force in the magnesium sulfate solution at this point, thereby automatically causing the deposited magnesium sulfate crystals to flow to the discharge hole on the crystallization vessel 14 that is off-axis from the crystallization vessel 14, realizing the discharge of magnesium sulfate crystals. Hole 3 of support device 42 can reduce stirring resistance and improve stirring effect. The tilt angle of support device 42 guides the magnesium sulfate crystals to flow to the bottom of crystallization vessel 14 when rotating.

[0031] Example 2

[0032] In addition to Example 1, it also includes:

[0033] like Figure 7 As shown, the plurality of pusher plates 06 are evenly spaced on the bracket 41, and the plurality of pusher plates 06 are all located inside the crystallization vessel 14;

[0034] First, open solenoid valve 16 to pour sufficient hot magnesium sulfate solution into crystallizing vessel 14 through hopper 17. Then, open the inlet and outlet of dual-channel rotary joint 28 and introduce water at a constant temperature into pipe 33 according to the required type of magnesium sulfate crystals to perform constant-temperature cooling and crystallization of the magnesium sulfate solution. Afterward, turn on motor 23, which provides power. The power is transmitted through reducer 22, pulley 24, belt 25, and pulley 26, driving the dual-channel rotary joint 28 to rotate. The rotating shaft 31 rotates with the dual-channel joint. The adapter 28 rotates, causing the shaft 31 to rotate, which in turn drives the bracket 32 ​​and pipe 33 to rotate. The bracket 32 ​​rotates to stir the magnesium sulfate solution. The holes in the bracket 32 ​​reduce stirring resistance and improve stirring effect. The pipe 33 rotates to facilitate rapid temperature control of the magnesium sulfate solution. Gear 4 55 rotates with the shaft 31. Gear 3 54, gear 2 53, gear 1 52, and gear ring 51 are driven to rotate by gear 4 55. Furthermore, gear 1 52, gear 2 53, and gear 3 54 work together to make gear ring 51 rotate. The gear 1 and gear 45 rotate in opposite directions at the same speed. The support 6 41 and support device 42 rotate in opposite directions relative to the rotating shaft 31 due to the power transmitted by gear 4 55. This can prevent the magnesium sulfate solution from forming a vortex during stirring and improve the stirring effect. The generated magnesium sulfate crystals flow through the hole 2 of support 6 41 to the bottom of the crystallization vessel 14. At this point, the magnesium sulfate solution is less affected by stirring, allowing the magnesium sulfate crystals to be deposited. At the same time, the rotation of support 6 41 generates centrifugal force in the magnesium sulfate solution at this point, which automatically causes the deposited magnesium sulfate crystals to flow to the discharge hole on the crystallization vessel 14 that is off-axis, thus discharging the magnesium sulfate crystals. The hole 3 of support device 42 can reduce stirring resistance and improve the stirring effect. The tilt angle of support device 42 guides the magnesium sulfate crystals to flow to the bottom of the crystallization vessel 14 when rotating. The pusher plate 06 rotates with support 6 41. When rotating, the pusher plate 06 pushes the magnesium sulfate crystals away from the axis of the crystallization vessel 14, thereby accelerating the discharge of magnesium sulfate crystals and preventing the magnesium sulfate crystals inside the crystallization vessel 14 from blocking the machine and affecting its operation.

[0035] like Figures 1 to 7As shown, this utility model discloses a high-efficiency magnesium sulfate heptahydrate crystallization device. During operation, firstly, solenoid valve 16 is opened, and sufficient hot magnesium sulfate solution is poured into the crystallization vessel 14 through hopper 17. Then, the inlet and outlet of the dual-channel rotary joint 28 are opened, and water at a constant temperature is introduced into pipe 33 according to the desired type of magnesium sulfate crystals, allowing for constant-temperature cooling and crystallization of the magnesium sulfate solution. Afterward, motor 23 is turned on, providing power. This power is transmitted through reducer 22, pulley 24, belt 25, and pulley 26, driving the dual-channel rotary joint 14. The rotary joint 28 rotates, and the rotating shaft 31 rotates along with the rotary joint 28. The rotation of the rotating shaft 31 drives the support 32 and the pipe 33 to rotate. The rotation of the support 32 stirs the magnesium sulfate solution. The holes in the support 32 can reduce stirring resistance and improve stirring effect. The rotation of the pipe 33 facilitates rapid temperature control of the magnesium sulfate solution. The gear 4 55 rotates with the rotation of the rotating shaft 31. The gears 3 54, 2 53, 1 52 and the gear ring 51 are driven to rotate by the gear 4 55. The gears 1 52 and 53 are also driven to rotate. Gear 253 and gear 354 work together to cause gear ring 51 and gear 45 to rotate in opposite directions at the same speed. Support 6 41 and support device 42 rotate in opposite directions relative to the rotating shaft 31 due to the power transmitted by gear 4 55. This prevents the magnesium sulfate solution from forming vortices during stirring, improving the stirring effect. The generated magnesium sulfate crystals flow through the holes in support 6 41 to the bottom of the crystallizing vessel 14. At this point, the magnesium sulfate solution is less affected by stirring, allowing the magnesium sulfate crystals to deposit. Simultaneously, the rotation of support 6 41 generates centrifugal force in the magnesium sulfate solution at this location, thus... The system automatically directs the deposited magnesium sulfate crystals to the discharge hole on the crystallization vessel 14, which is offset from the axis of the crystallization vessel 14, thus discharging the magnesium sulfate crystals. The three holes in the support device 42 can reduce the stirring resistance and improve the stirring effect. When the support device 42 rotates, it guides the magnesium sulfate crystals to flow to the bottom of the crystallization vessel 14. The pusher plate 06 rotates with the support device 41. When the pusher plate 06 rotates, it pushes the magnesium sulfate crystals away from the axis of the crystallization vessel 14, thereby accelerating the discharge of magnesium sulfate crystals and preventing the magnesium sulfate crystals inside the crystallization vessel 14 from blocking the machine and affecting its operation.

[0036] The solenoid valve 15, solenoid valve 26, motor 23, pulley 1 24, multiple belts 25, pulley 26, dual-pass rotary joint 28, gear ring 51, gear 1 52, gear 2 53, gear 3 54 and gear 4 55 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0037] The main function achieved by this utility model is to improve the cooling speed and production efficiency by setting a power device 02 and a temperature control device 03 to stir and control the magnesium sulfate solution inside; it solves the problem of slow cooling speed and low production efficiency in the prior art of cooling the inside of the crystallizer by cooling the outer wall of the crystallizer.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-efficiency crystallization apparatus for magnesium sulfate heptahydrate, comprising a body (01); characterized in that, It also includes a power unit (02), a temperature control device (03), a stirring device (04), a transmission device (05), and multiple pusher plates (06). The power unit (02), the stirring device (04), and the transmission device (05) are all installed on the machine body (01). The temperature control device (03) is installed on the power unit (02), and the multiple pusher plates (06) are all installed on the stirring device (04). The machine body (01) holds the magnesium sulfate solution. The power unit (02) provides power to the temperature control device (03), the stirring device (04), and the pusher plates (06). The temperature control device (03) controls the temperature and stirs the magnesium sulfate solution. The stirring device (04) stirs the magnesium sulfate solution. The transmission device (05) transmits the power. The pusher plates (06) transport the magnesium sulfate crystals.

2. The high-efficiency crystallization apparatus for magnesium sulfate heptahydrate as described in claim 1, characterized in that, The machine body (01) includes multiple support bases (11), multiple brackets one (12), bracket two (13), crystallizer (14), solenoid valve one (15), solenoid valve two (16), and hopper (17). Multiple brackets one (12) are respectively installed on the top of multiple support bases (11), bracket two (13) is installed on the top of multiple brackets one (12), crystallizer (14) is installed on bracket two (13), crystallizer (14) is provided with a through hole and a feed hole at the top of crystallizer (14), and installation hole and discharge hole are provided at the bottom of crystallizer (14). Solenoid valve one (15) is installed at the bottom of the discharge hole of crystallizer (14), solenoid valve two (16) is installed at the top of the feed hole of crystallizer (14), and hopper (17) is installed at the top of solenoid valve two (16).

3. The high-efficiency crystallization apparatus for magnesium sulfate heptahydrate as described in claim 2, characterized in that, The power unit (02) includes a support three (21), a reducer (22), a motor (23), a pulley one (24), multiple belts (25), a pulley two (26), a support four (27), and a double-pass rotary joint (28). The support three (21) is fixedly installed on the side of the crystallization vessel (14), the reducer (22) is fixedly installed on the bottom of the support three (21), the motor (23) is fixedly installed on the bottom of the reducer (22), and the pulley one (24) is rotatably installed on the top of the support three (21), and the pulley one (24) passes between the support three (21) and the reducer (22). The motor (23) provides power to pulley one (24) through reducer (22). Pulley two (26) is rotatably installed on the top of the through hole of the crystallizer (14). Multiple belts (25) are installed on pulley one (24) and pulley two (26). Support four (27) is fixedly installed on the top of the crystallizer (14). The top of the dual-channel rotary joint (28) is fixedly installed on the side of support four (27), and the bottom of the dual-channel rotary joint (28) is fixedly connected to pulley two (26). The dual-channel rotary joint (28) is provided with a water inlet and a water outlet that do not interfere with each other.

4. The high-efficiency crystallization apparatus for magnesium sulfate heptahydrate as described in claim 3, characterized in that, The constant temperature device (03) includes a rotating shaft (31), multiple brackets (32) and a pipe (33). The rotating shaft (31) passes through the through hole and mounting hole of the crystallizing vessel (14) and is fixedly installed at the bottom of the double-pass rotary joint (28). The multiple brackets (32) are all fixedly installed on the side of the rotating shaft (31). Multiple holes are provided on the multiple brackets (32). The pipe (33) is coiled and installed on the multiple brackets (32). The inlet and outlet of the pipe (33) are connected through the double-pass rotary joint (28) and the inlet and outlet of the double-pass rotary joint (28), respectively.

5. The high-efficiency crystallization apparatus for magnesium sulfate heptahydrate as described in claim 4, characterized in that, The stirring device (04) includes a support six (41) and multiple support devices (42). The support six (41) is mounted on the rotating shaft (31) and is rotatably installed in the mounting hole of the crystallizing vessel (14). Multiple holes two are provided at the top of the support six (41). Multiple support devices (42) are evenly spaced and installed at the top of the support six (41). Multiple holes three are provided on each of the multiple support devices (42). Each of the multiple support devices (42) has a small tilt angle relative to the support six (41).

6. The high-efficiency crystallization apparatus for magnesium sulfate heptahydrate as described in claim 5, characterized in that, The transmission device (05) includes a gear ring (51), gear one (52), gear two (53), gear three (54), gear four (55), and bracket eight (56). The gear ring (51) is fixedly mounted on the bottom of bracket six (41). Gear one (52) and gear two (53) are rotatably mounted on the bottom of the crystallization vessel (14), and gear one (52) meshes with gear ring (51), gear one (52) meshes with gear two (53), and gear three (54) is fixedly mounted on gear two (55). 53) At the bottom, gear four (55) is fixedly installed at the bottom of the rotating shaft (31), and gear three (54) and gear four (55) mesh with each other. The number of teeth of gear ring (51), gear two (53) and gear four (55) are equal. The number of teeth between gear one (52) and gear three (54) is equal. Support eight (56) is installed at the bottom of the crystallizing kettle (14), and support eight (56) completely covers gear ring (51), gear one (52), gear two (53), gear three (54) and gear four (55).

7. The high-efficiency crystallization apparatus for magnesium sulfate heptahydrate as described in claim 5, characterized in that, The plurality of pusher plates (06) are evenly spaced on the support six (41), and the plurality of pusher plates (06) are all located inside the crystallization vessel (14).

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