Combined drying device for magnesium sulfate production

Abstract

The utility model relates to the technical field of magnesium sulfate drying equipment, in particular to a combined drying device for magnesium sulfate production, which is characterized in that magnesium sulfate is subjected to fluidized drying by arranging a fluidized drying device, a freeze drying device and a bearing device, so that the drying temperature is convenient to control, and magnesium sulfate crystals with various crystal structures are convenient to dry. By arranging the machine body, magnesium sulfate finished products can be in continuous contact with hot dry air after being discharged, magnesium sulfate can be prevented from absorbing a large amount of water, and the quality of the finished products is improved; comprising a body; the fluidized drying device, the freeze drying device, the sealing device and the bearing device are all mounted on the machine body; the machine body provides support, the fluidized drying device and the bearing device are matched to conduct fluidized drying on magnesium sulfate, the freeze drying device conducts freeze drying on air entering the fluidized drying device, and the sealing device prevents the magnesium sulfate in the bearing device from being blown out during feeding.

Description

Technical Field

[0001] This utility model relates to the technical field of magnesium sulfate drying equipment, and in particular to a combined drying device for magnesium sulfate production. Background Technology

[0002] Magnesium sulfate is a common chemical reagent that is hygroscopic and deliquescent. To improve the quality of magnesium sulfate, it needs to be dried and dehydrated during production.

[0003] Existing drying equipment, such as the Chinese utility model patent CN220793718U (authorization announcement number: CN220793718U, a drying equipment for magnesium sulfate production), represents a class of prior art whose main structure includes a heater and a stirring blade. The heater heats and dries the magnesium sulfate, and the stirring blade stirs the magnesium sulfate during the heating and drying process.

[0004] However, the existing technology and equipment still have the following problems when in use: drying magnesium sulfate by heating makes it difficult to control the number of crystal water in magnesium sulfate crystals, the machine is not easy to use, and there is a lot of moisture inside the machine that is in direct contact with magnesium sulfate. When discharging, magnesium sulfate easily absorbs a lot of water, resulting in poor quality of finished product. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a combined drying device for magnesium sulfate production. It uses a fluidized drying device, a freeze drying device, and a carrying device to perform fluidized drying of magnesium sulfate, which facilitates the control of drying temperature, facilitates the drying of magnesium sulfate crystals with various crystal structures, improves the ease of use of the machine, and prevents magnesium sulfate from absorbing a large amount of water by setting the machine body so that the finished magnesium sulfate is continuously exposed to hot dry air after feeding, thus improving the quality of the finished product.

[0006] This utility model discloses a combined drying device for magnesium sulfate production, including a machine body; it also includes a fluidized bed drying device, a freeze drying device, a sealing device, and a support device, all of which are mounted on the machine body; the machine body provides support, the fluidized bed drying device and the support device work together to fluidize and dry magnesium sulfate, the freeze drying device freeze-dries the air entering the fluidized bed drying device, and the sealing device prevents magnesium sulfate inside the support device from being blown out during feeding.

[0007] Preferably, the machine body includes multiple support seats, a base plate, a first bracket, multiple second brackets, a collection box, a fluidized bed drying chamber, and a discharge guide block. The base plate is installed on top of the multiple support seats, the first bracket and multiple second brackets are all installed on top of the base plate, the collection box is placed on top of the base plate, the fluidized bed drying chamber is installed on top of the multiple second brackets, the top of the fluidized bed drying chamber is provided with a feed inlet, the front end of the fluidized bed drying chamber is provided with a discharge outlet, the bottom end of the fluidized bed drying chamber is provided with multiple air inlets, the discharge guide block is installed on the front end of the fluidized bed drying chamber, and the top of the discharge guide block is provided with a breathable screen; providing support.

[0008] Preferably, the fluidized bed dryer includes a motor, an impeller pump, a distribution pipe, an electric heater, a temperature sensor, and multiple air nozzles. The motor is fixedly mounted on the top of a support, the impeller pump is fixedly mounted on the side of the motor, and the impeller pump and the freeze-drying device are sealed together. The distribution pipe is mounted on the impeller pump and has multiple exhaust ports. The multiple exhaust ports of the distribution pipe are respectively installed in the multiple air inlets of the fluidized bed dryer. Solenoid valves are installed in the multiple exhaust ports of the distribution pipe. The electric heater and the temperature sensor are both connected and installed on the left side of the distribution pipe. The multiple air nozzles are respectively installed on the top of the multiple exhaust ports. The motor provides power to drive the impeller pump to discharge the freeze-dried air output from the freeze-drying device into the distribution pipe. The electric heater heats the air before air distribution, and the temperature sensor measures the temperature of the air before distribution. The electric heater and the temperature sensor work together to maintain a certain temperature of the air inside the distribution pipe. The solenoid valve inside the distribution pipe controls the air discharge. The air nozzles make the gas sprayed from the distribution pipe move evenly to the bearing device, improving the uniformity of the gas velocity on the surface of the bearing device and improving the fluidization effect of magnesium sulfate.

[0009] Preferably, the freeze-drying device includes a housing, a first pipe, a one-way inlet valve, a compressor, a second pipe, an evaporator, a condenser, a third support, a fourth support, a fifth support, a fan, and two sixth supports. The housing is mounted on the top of the base plate, with an opening at the left end. The rear end of the first pipe is mounted on the front end of the impeller pump, and the front part of the first pipe is coiled inside the housing. Multiple valves are located at the bottom of the coiled portion of the first pipe. The front end of the housing passes through and connects to the one-way inlet valve, which is fixedly mounted on the top of the housing. The compressor is fixedly mounted at the bottom of the housing. The second pipe is mounted on the compressor. The evaporator and condenser are both connected and mounted on the second pipe, with the evaporator wrapping around the coiled portion of the first pipe. The third support is fixedly mounted at the opening of the housing. Frame 4 is fixedly installed on the left end of Frame 3, Frame 5 is fixedly installed inside Frame 4, and the fan is installed on the left end of Frame 5. Two Frames 6 are installed on the left and right sides of Frame 4 respectively, with Frame 5 and the fan located between the two Frames 6. The compressor provides power to compress the liquid-gas mixture inside Pipe 2. The evaporator absorbs heat from Pipe 1, and the condenser releases heat to cool Pipe 2. At the same time, the fan is turned on, and the fan drives the airflow through the condenser to the outside. The compressor, Pipe 2, evaporator, condenser, and fan work together to freeze-dry the inside of Pipe 1. The water produced by freeze-drying remains in the coiled part of Pipe 1. When there is too much water inside Pipe 1, affecting the freeze-drying effect, the valve of Pipe 1 is opened to drain the water.

[0010] Preferably, the sealing device includes two hinges, two sealing plates, and two sets of coil springs. The two hinges are fixedly installed on the left and right side walls inside the feed inlet of the fluidized drying chamber, respectively. The two sealing plates are rotatably installed on the two hinges, and the two sets of coil springs are respectively fitted onto the two hinges, and the two sets of coil springs abut against the fluidized drying chamber and the two sealing plates. The coil springs provide elasticity so that the sealing plates remain closed without external pressure, preventing the magnesium sulfate inside the fluidized drying chamber from being blown out of the fluidized drying chamber by the flowing air after feeding.

[0011] Preferably, the supporting device includes a supporting plate, which is fixedly installed inside the fluidized drying chamber. The supporting plate has multiple vent holes. The supporting plate supports magnesium sulfate, and the vent holes allow gas to pass through. The magnesium sulfate floats in the dry air under the action of gas blowing, and the moisture carried in the magnesium sulfate is thus quickly absorbed by the dry air, thereby realizing the fluidized drying of magnesium sulfate.

[0012] Preferably, the bearing device includes two rubber pads, a second bearing plate, and multiple sets of vibration motors. The two rubber pads are installed on the inner sidewall of the fluidized drying chamber. The second bearing plate is installed on the two rubber pads and has multiple vent holes. The multiple sets of vibration motors are evenly spaced at the top of the second bearing plate. The second bearing plate carries magnesium sulfate, and the vent holes only allow gas to pass through. Under the action of the gas blowing, the magnesium sulfate floats in the dry air, and the moisture carried in the magnesium sulfate is thus quickly absorbed by the dry air, achieving fluidized drying of the magnesium sulfate. Simultaneously, the vibration motors are turned on, providing vibration to improve the fluidization uniformity of the magnesium sulfate and increase drying efficiency. During vibration, the rubber pads reduce the vibration transmitted to the fluidized drying chamber, preventing machine damage.

[0013] Compared with the prior art, the advantages of this utility model are as follows: magnesium sulfate is dried by hot air fluidized drying, which makes it easy to control the drying temperature, can dry magnesium sulfate crystals with various crystal structures, and the machine is easy to use; and by making the finished magnesium sulfate continuously contact the hot drying air after feeding, it can prevent the magnesium sulfate from absorbing a large amount of water, resulting in a higher quality finished product. 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 the fuselage;

[0016] Figure 3 This is a schematic diagram of the isometric cross-sectional structure of the fluidized bed dryer;

[0017] Figure 4 This is a schematic diagram of the isometric cross-sectional structure of the freeze-drying device;

[0018] Figure 5 It is an isometric sectional view of the structure of hinges, sealing plates, and coil springs, etc.

[0019] Figure 6 This is a schematic diagram of the isometric cross-sectional structure of the support plate and the fluidized drying chamber;

[0020] Figure 7 This is an isometric sectional view of the rubber pad, bearing plate 2, and vibration motor, etc.

[0021] The attached diagram is labeled as follows: 01. Machine body; 11. Support base; 12. Base plate; 13. Support 1; 14. Support 2; 15. Collection box; 16. Fluidized drying chamber; 17. Feed guide block; 02. Fluidized drying device; 21. Motor; 22. Impeller pump; 23. Diversion pipe; 24. Electric heater; 25. Temperature sensor; 26. Air nozzle; 03. Freeze-drying device; 31. Box; 32. Pipe 1; 33. One-way air inlet valve; 34. Compressor; 35. Pipe 2; 36. Evaporator; 37. Condenser; 38. Support 3; 39. Support 4; 61. Support 5; 62. Fan; 63. Support 6; 04. Sealing device; 41. Hinge; 42. Sealing plate; 43. Coil spring; 05. Bearing device; 51. Bearing plate 1; 52. Rubber pad; 53. Bearing plate 2; 54. Vibration motor. 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. Example 1

[0023] like Figure 1 As shown, the device includes a body 01; it also includes a fluidized bed dryer 02, a freeze dryer 03, a sealing device 04, and a support device 05. The fluidized bed dryer 02, the freeze dryer 03, the sealing device 04, and the support device 05 are all mounted on the body 01. The body 01 provides support. The fluidized bed dryer 02 and the support device 05 work together to fluidize and dry magnesium sulfate. The freeze dryer 03 freeze-dries the air entering the fluidized bed dryer 02. The sealing device 04 prevents the magnesium sulfate inside the support device 05 from being blown out during feeding.

[0024] like Figure 2 As shown, the machine body 01 includes multiple support seats 11, a base plate 12, a first bracket 13, multiple second brackets 14, a collection box 15, a fluidized drying chamber 16, and a discharge guide block 17. The base plate 12 is installed on the top of the multiple support seats 11. The first bracket 13 and the multiple second brackets 14 are all installed on the top of the base plate 12. The collection box 15 is placed on the top of the base plate 12. The fluidized drying chamber 16 is installed on the top of the multiple second brackets 14. The top of the fluidized drying chamber 16 is provided with a feed inlet. The front end of the fluidized drying chamber 16 is provided with a discharge outlet. The bottom end of the fluidized drying chamber 16 is provided with multiple air inlets. The discharge guide block 17 is installed on the front end of the fluidized drying chamber 16. The top of the discharge guide block 17 is provided with a breathable screen.

[0025] like Figure 3As shown, the fluidized bed drying device 02 includes a motor 21, an impeller pump 22, a diversion pipe 23, an electric heater 24, a temperature sensor 25, and multiple air nozzles 26. The motor 21 is fixedly installed on the top of the bracket 13, the impeller pump 22 is fixedly installed on the side of the motor 21, and the impeller pump 22 and the freeze-drying device 03 are sealed together. The diversion pipe 23 is installed on the impeller pump 22, and multiple exhaust ports are provided on the diversion pipe 23. The multiple exhaust ports of the diversion pipe 23 are respectively installed in the multiple air inlets of the fluidized bed drying chamber 16. Solenoid valves are respectively provided in the multiple exhaust ports of the diversion pipe 23. The electric heater 24 and the temperature sensor 25 are both connected and installed on the left side of the diversion pipe 23. The multiple air nozzles 26 are respectively installed on the top of the multiple exhaust ports.

[0026] like Figure 4 As shown, the freeze-drying device 03 includes a housing 31, a first pipe 32, a one-way inlet valve 33, a compressor 34, a second pipe 35, an evaporator 36, a condenser 37, a third support 38, a fourth support 39, a fifth support 61, a fan 62, and two sixth supports 63. The housing 31 is mounted on the top of the base plate 12, and an opening is provided at the left end of the housing 31. The rear end of the first pipe 32 is installed at the front end of the impeller pump 22, and the front part of the first pipe 32 is coiled inside the housing 31. Multiple valves are provided at the bottom end of the coiled part of the first pipe 32. The front end of the housing 31 passes through and connects to the one-way inlet valve 33, which is fixedly installed in the housing. At the top of 31, compressor 34 is fixedly installed inside the bottom of housing 31. Pipe 2 35 is installed on compressor 34. Evaporator 36 and condenser 37 are both connected and installed on pipe 2 35. Evaporator 36 wraps around the coiled part of pipe 1 32. Bracket 3 38 is fixedly installed at the opening of housing 31. Bracket 4 39 is fixedly installed at the left end of bracket 3 38. Bracket 5 61 is fixedly installed inside bracket 4 39. Fan 62 is rotatably installed at the left end of bracket 5 61. Two brackets 63 are installed on the left and right sides of bracket 4 39 respectively. Bracket 5 61 and fan 62 are both located between the two brackets 63.

[0027] like Figure 5 As shown, the sealing device 04 includes two hinges 41, two sealing plates 42 and two sets of coil springs 43. The two hinges 41 are fixedly installed on the left and right side walls inside the feed inlet of the fluidized drying chamber 16, respectively. The two sealing plates 42 are rotatably installed on the two hinges 41, and the two sets of coil springs 43 are respectively fitted on the two hinges 41, and the two sets of coil springs 43 abut against the fluidized drying chamber 16 and the two sealing plates 42 respectively.

[0028] like Figure 6 As shown, the supporting device 05 includes a supporting plate 51, which is fixedly installed inside the fluidized drying chamber 16. The supporting plate 51 is provided with a plurality of air vents.

[0029] First, press to open the sealing plate 42 and add magnesium sulfate into the fluidized drying chamber 16. Then, turn on the compressor 34, fan 62, and motor 21. The motor 21 provides power to drive the impeller pump 22 to discharge the freeze-dried air output from the freeze-drying unit 03 into the distribution pipe 23. The electric heater 24 heats the air before it is distributed, and the temperature sensor 25 measures the temperature of the air before it is distributed. The electric heater 24 and the temperature sensor 25 work together to maintain a certain temperature of the air inside the distribution pipe 23. The solenoid valve inside the distribution pipe 23 controls the air discharge. The nozzle 26 makes the gas sprayed from the distribution pipe 23 move evenly to the bearing device 05, improving the uniformity of the gas velocity on the surface of the bearing device 05 and improving the fluidization effect on magnesium sulfate. The compressor 34 provides power to compress the liquid-gas mixture inside the second pipe 35. The evaporator 36 absorbs the heat from the first pipe 32, and the condenser 37 releases the heat. Pipeline 2 35 is cooled, and fan 62 is turned on at the same time. Fan 62 rotates and drives airflow through condenser 37 to the outside. Compressor 34, pipeline 2 35, evaporator 36, condenser 37 and fan 62 work together to freeze-dry the inside of pipeline 1 32. The water produced by freeze-drying is left in the coiled part of pipeline 1 32. When there is too much water inside pipeline 1 32 and it affects the freeze-drying effect, the valve of pipeline 1 32 is opened to drain the water. At this time, the support plate 1 51 carries magnesium sulfate. The vent hole of the support plate 1 51 allows gas to pass through. Magnesium sulfate floats in the dry air under the action of gas blowing. The moisture carried in magnesium sulfate is thus quickly absorbed by the dry air, realizing the fluidized drying of magnesium sulfate. After the feeding is completed, the coil spring 43 provides elasticity to keep the sealing plate 42 closed without external pressure, preventing the magnesium sulfate in the fluidized drying chamber 16 from being blown out of the fluidized drying chamber 16 by the flowing air after feeding. Example 2

[0030] like Figure 1 As shown, the device includes a body 01; it also includes a fluidized bed dryer 02, a freeze dryer 03, a sealing device 04, and a support device 05. The fluidized bed dryer 02, the freeze dryer 03, the sealing device 04, and the support device 05 are all mounted on the body 01. The body 01 provides support. The fluidized bed dryer 02 and the support device 05 work together to fluidize and dry magnesium sulfate. The freeze dryer 03 freeze-dries the air entering the fluidized bed dryer 02. The sealing device 04 prevents the magnesium sulfate inside the support device 05 from being blown out during feeding.

[0031] like Figure 2As shown, the machine body 01 includes multiple support seats 11, a base plate 12, a first bracket 13, multiple second brackets 14, a collection box 15, a fluidized drying chamber 16, and a discharge guide block 17. The base plate 12 is installed on the top of the multiple support seats 11. The first bracket 13 and the multiple second brackets 14 are all installed on the top of the base plate 12. The collection box 15 is placed on the top of the base plate 12. The fluidized drying chamber 16 is installed on the top of the multiple second brackets 14. The top of the fluidized drying chamber 16 is provided with a feed inlet. The front end of the fluidized drying chamber 16 is provided with a discharge outlet. The bottom end of the fluidized drying chamber 16 is provided with multiple air inlets. The discharge guide block 17 is installed on the front end of the fluidized drying chamber 16. The top of the discharge guide block 17 is provided with a breathable screen.

[0032] like Figure 3 As shown, the fluidized bed drying device 02 includes a motor 21, an impeller pump 22, a diversion pipe 23, an electric heater 24, a temperature sensor 25, and multiple air nozzles 26. The motor 21 is fixedly installed on the top of the bracket 13, the impeller pump 22 is fixedly installed on the side of the motor 21, and the impeller pump 22 and the freeze-drying device 03 are sealed together. The diversion pipe 23 is installed on the impeller pump 22, and multiple exhaust ports are provided on the diversion pipe 23. The multiple exhaust ports of the diversion pipe 23 are respectively installed in the multiple air inlets of the fluidized bed drying chamber 16. Solenoid valves are respectively provided in the multiple exhaust ports of the diversion pipe 23. The electric heater 24 and the temperature sensor 25 are both connected and installed on the left side of the diversion pipe 23. The multiple air nozzles 26 are respectively installed on the top of the multiple exhaust ports.

[0033] like Figure 4 As shown, the freeze-drying device 03 includes a housing 31, a first pipe 32, a one-way inlet valve 33, a compressor 34, a second pipe 35, an evaporator 36, a condenser 37, a third support 38, a fourth support 39, a fifth support 61, a fan 62, and two sixth supports 63. The housing 31 is mounted on the top of the base plate 12, and an opening is provided at the left end of the housing 31. The rear end of the first pipe 32 is installed at the front end of the impeller pump 22, and the front part of the first pipe 32 is coiled inside the housing 31. Multiple valves are provided at the bottom end of the coiled part of the first pipe 32. The front end of the housing 31 passes through and connects to the one-way inlet valve 33, which is fixedly installed in the housing. At the top of 31, compressor 34 is fixedly installed inside the bottom of housing 31. Pipe 2 35 is installed on compressor 34. Evaporator 36 and condenser 37 are both connected and installed on pipe 2 35. Evaporator 36 wraps around the coiled part of pipe 1 32. Bracket 3 38 is fixedly installed at the opening of housing 31. Bracket 4 39 is fixedly installed at the left end of bracket 3 38. Bracket 5 61 is fixedly installed inside bracket 4 39. Fan 62 is rotatably installed at the left end of bracket 5 61. Two brackets 63 are installed on the left and right sides of bracket 4 39 respectively. Bracket 5 61 and fan 62 are both located between the two brackets 63.

[0034] like Figure 5As shown, the sealing device 04 includes two hinges 41, two sealing plates 42 and two sets of coil springs 43. The two hinges 41 are fixedly installed on the left and right side walls inside the feed inlet of the fluidized drying chamber 16, respectively. The two sealing plates 42 are rotatably installed on the two hinges 41, and the two sets of coil springs 43 are respectively fitted on the two hinges 41, and the two sets of coil springs 43 abut against the fluidized drying chamber 16 and the two sealing plates 42 respectively.

[0035] like Figure 7 As shown, the bearing device 05 includes two rubber pads 52, a second bearing plate 53, and multiple sets of vibration motors 54. The two rubber pads 52 are installed on the inner side wall of the fluidized drying chamber 16. The second bearing plate 53 is installed on the two rubber pads 52. Multiple air vents are provided on the second bearing plate 53. Multiple sets of vibration motors 54 are evenly spaced on the top of the second bearing plate 53.

[0036] First, press to open the sealing plate 42 and add magnesium sulfate into the fluidized drying chamber 16. Then, turn on the compressor 34, fan 62, and motor 21. The motor 21 provides power to drive the impeller pump 22 to discharge the freeze-dried air output from the freeze-drying unit 03 into the distribution pipe 23. The electric heater 24 heats the air before it is distributed, and the temperature sensor 25 measures the temperature of the air before it is distributed. The electric heater 24 and the temperature sensor 25 work together to maintain a certain temperature of the air inside the distribution pipe 23. The solenoid valve inside the distribution pipe 23 controls the air discharge. The nozzle 26 makes the gas sprayed from the distribution pipe 23 move evenly to the bearing device 05, improving the uniformity of the gas velocity on the surface of the bearing device 05 and improving the fluidization effect of magnesium sulfate. The compressor 34 provides power to compress the liquid-gas mixture inside the second pipe 35. The evaporator 36 absorbs the heat from the first pipe 32, and the condenser 37 releases the heat to cool the second pipe 35. At the same time, the fan 62 is turned on, and the fan 62 drives the airflow through the condenser 37. The compressor 34, pipe 35, evaporator 36, condenser 37, and fan 62 work together to freeze-dry the inside of pipe 32. The water produced during freeze-drying remains in the coiled part of pipe 32. When there is too much water inside pipe 32, affecting the freeze-drying effect, the valve of pipe 32 is opened to drain the water. At this time, the bearing plate 53 carries magnesium sulfate. The vent holes of the bearing plate 53 only allow gas to pass through. The magnesium sulfate floats in the dry air under the action of gas blowing. The moisture carried in the magnesium sulfate is thus quickly absorbed by the dry air, realizing the fluidized drying of magnesium sulfate. At the same time, the vibration motor 54 is turned on to provide vibration, improve the fluidization uniformity of magnesium sulfate, and improve the drying efficiency. During vibration, the rubber pad 52 weakens the vibration transmitted to the fluidized drying chamber 16 to prevent machine damage. After the feeding is completed, the coil spring 43 provides elasticity to keep the sealing plate 42 closed without external pressure, preventing the magnesium sulfate inside the fluidized drying chamber 16 from being blown out of the fluidized drying chamber 16 by the flowing air after feeding.

[0037] like Figures 1 to 7As shown, this utility model discloses a combined drying device for magnesium sulfate production. During operation, the sealing plate 42 is first pressed open, and magnesium sulfate is added into the fluidized drying chamber 16. Then, the compressor 34, fan 62, and motor 21 are turned on. The motor 21 provides power, driving the impeller pump 22 to discharge the freeze-dried air output from the freeze-drying device 03 into the distribution pipe 23. An electric heater 24 heats the air before the air is distributed, and a temperature sensor 25 measures the temperature of the air before distribution. The electric heater 24 and the temperature sensor... 25 works together to maintain a certain temperature of the air inside the diversion pipe 23. The solenoid valve inside the diversion pipe 23 controls the air discharge. The air nozzle 26 makes the gas ejected from the diversion pipe 23 move evenly to the bearing device 05, improving the uniformity of the gas velocity on the surface of the bearing device 05 and enhancing the fluidization effect on magnesium sulfate. The compressor 34 provides power to compress the liquid-gas mixture inside the second pipe 35. The evaporator 36 absorbs the heat from the first pipe 32, and the condenser 37 releases the heat to cool the second pipe 35. At the same time, the fan 62 is turned on. The fan 62 rotates, driving airflow through the condenser 37 to the outside. The compressor 34, pipe 35, evaporator 36, condenser 37, and fan 62 work together to freeze-dry the inside of pipe 32. Water produced during freeze-drying remains in the coiled portion of pipe 32. When there is too much water inside pipe 32, affecting the freeze-drying effect, the valve of pipe 32 is opened to drain the water. At this time, the support plate 53 carries magnesium sulfate. The vent holes of the support plate 53 only allow gas to pass through. The magnesium sulfate floats in the dry air under the action of the gas. The moisture carried in magnesium sulfate is thus quickly drawn out by the dry air, achieving fluidized drying of magnesium sulfate. At the same time, the vibration motor 54 is turned on, providing vibration to improve the fluidization uniformity of magnesium sulfate and improve drying efficiency. During vibration, the rubber pad 52 reduces the vibration transmitted to the fluidized drying chamber 16 to prevent machine damage. After feeding is completed, the coil spring 43 provides elasticity to keep the sealing plate 42 closed without external pressure, preventing the magnesium sulfate inside the fluidized drying chamber 16 from being blown out of the fluidized drying chamber 16 by the flowing air after feeding.

[0038] The motor 21, impeller pump 22, multiple solenoid valves, electric heater 24, temperature sensor 25, compressor 34, fan 62, two hinges 41, two sets of coil springs 43, two rubber pads 52 and multiple sets of vibration motors 54 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.

[0039] The main functions achieved by this utility model are as follows: By setting up a fluidized drying device 02, a freeze drying device 03, and a carrying device 05, magnesium sulfate is fluidized and dried, which facilitates the control of the drying temperature, facilitates the drying of magnesium sulfate crystals with various crystal structures, improves the ease of use of the machine, and by setting up the machine body 01, the finished magnesium sulfate is continuously exposed to hot dry air after feeding, which can prevent magnesium sulfate from absorbing a large amount of water and improve the quality of the finished product; it solves the problems of the prior art where drying magnesium sulfate by heating is difficult to control the number of crystal water in magnesium sulfate crystals, the machine is not easy to use, and the machine has a lot of moisture inside that is in direct contact with magnesium sulfate, which makes it easy for magnesium sulfate to absorb a large amount of water during discharge, resulting in poor quality of the finished product.

[0040] 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 combined drying device for magnesium sulfate production, comprising a machine body (01); characterized in that, The fluidized drying device (02), the freeze drying device (03), the sealing device (04) and the bearing device (05) are all installed on the fuselage (01); the fuselage (01) provides support, the fluidized drying device (02) and the bearing device (05) cooperate to fluidize and dry the magnesium sulfate, the freeze drying device (03) freeze dries the air entering the fluidized drying device (02), and the sealing device (04) prevents the magnesium sulfate inside the bearing device (05) from being blown out when loading.

2. The combined drying device for producing magnesium sulfate according to claim 1, characterized in that, The fuselage (01) comprises a plurality of support seats (11), a bottom plate (12), a support one (13), a plurality of support twos (14), a collection box (15), a fluidized drying chamber (16) and a discharging guide block (17), the bottom plate (12) is installed at the top end of the plurality of support seats (11), the support one (13) and the plurality of support twos (14) are both installed at the top end of the bottom plate (12), the collection box (15) is placed at the top end of the bottom plate (12), the fluidized drying chamber (16) is installed at the top end of the plurality of support twos (14), the top end of the fluidized drying chamber (16) is provided with a feeding port, the front end of the fluidized drying chamber (16) is provided with a discharging port, the bottom end of the fluidized drying chamber (16) is provided with a plurality of air inlets, and the discharging guide block (17) is installed at the front end of the fluidized drying chamber (16), and the top end of the discharging guide block (17) is provided with a breathable screen.

3. The combined drying device for producing magnesium sulfate according to claim 2, characterized in that, The fluidized drying device (02) comprises a motor (21), an impeller pump (22), a shunt pipeline (23), an electric heater (24), a temperature sensor (25) and a plurality of air nozzles (26), the motor (21) is fixedly installed at the top end of the support one (13), the impeller pump (22) is fixedly installed at the side end of the motor (21), and the impeller pump (22) is sealingly connected with the freeze drying device (03), the shunt pipeline (23) is installed on the impeller pump (22), and a plurality of exhaust ports are formed in the shunt pipeline (23), the plurality of exhaust ports of the shunt pipeline (23) are respectively installed in the plurality of air inlets of the fluidized drying chamber (16), and the plurality of exhaust ports of the shunt pipeline (23) are respectively provided with electromagnetic valves, the electric heater (24) and the temperature sensor (25) are both communicatively installed on the left part of the shunt pipeline (23), and the plurality of air nozzles (26) are respectively installed at the top ends of the plurality of exhaust ports.

4. The combined drying device for producing magnesium sulfate according to claim 3, characterized in that, The freeze-drying device (03) comprises a box (31), a pipeline I (32), a one-way air inlet valve (33), a compressor (34), a pipeline II (35), an evaporator (36), a condenser (37), a support III (38), a support IV (39), a support V (61), a fan (62) and two supports VI (63), the box (31) is installed at the top end of the bottom plate (12), the left end of the box (31) is provided with an opening, the rear end of the pipeline I (32) is installed at the front end of the impeller pump (22), the front part of the pipeline I (32) is coiled and installed inside the box (31), the coiled part of the pipeline I (32) is provided with a plurality of valves at the bottom end, the front end of the box (31) penetrates and is connected with the one-way air inlet valve (33), the one-way air inlet valve (33) is fixedly installed at the top end of the box (31), the compressor (34) is fixedly installed at the bottom end inside the box (31), the pipeline II (35) is installed on the compressor (34), the evaporator (36) and the condenser (37) are both communicatively installed on the pipeline II (35), and the evaporator (36) forms a package to the coiled part of the pipeline I (32), the support III (38) is fixedly installed at the opening of the box (31), the support IV (39) is fixedly installed at the left end of the support III (38), the support V (61) is fixedly installed inside the support IV (39), the fan (62) is rotatably installed at the left end of the support V (61), and the two supports VI (63) are respectively installed on the left and right two parts of the support IV (39), and the support V (61) and the fan (62) are both located between the two supports VI (63).

5. The combined drying device for producing magnesium sulfate according to claim 2, characterized in that, The closing device (04) comprises two hinges (41), two closing plates (42) and two groups of coil springs (43), the two hinges (41) are respectively fixedly installed on the left and right side walls inside the feed inlet of the fluidized drying chamber (16), the two closing plates (42) are rotatably installed on the two hinges (41), and the two groups of coil springs (43) are respectively sleeved on the two hinges (41) and abut against the fluidized drying chamber (16) and the two closing plates (42).

6. The combined drying device for producing magnesium sulfate according to claim 2, characterized in that, The bearing device (05) comprises a bearing plate I (51), the bearing plate I (51) is fixedly installed inside the fluidized drying chamber (16), and a plurality of air permeable holes I are formed in the bearing plate I (51).

7. The combined drying device for producing magnesium sulfate according to claim 2, characterized in that, The bearing device (05) comprises two rubber pads (52), a bearing plate II (53) and a plurality of groups of vibration motors (54), the two rubber pads (52) are both installed on the side walls inside the fluidized drying chamber (16), the bearing plate II (53) is installed on the two rubber pads (52), a plurality of air permeable holes II are formed in the bearing plate II (53), and the plurality of groups of vibration motors (54) are uniformly and interval installed at the top end of the bearing plate II (53).

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