A wastewater treatment device for heptahydrate magnesium sulfate production

Abstract

The utility model relates to wastewater treatment device's technical field especially, it is a kind of wastewater treatment device for magnesium sulfate heptahydrate production, it carries out filtration to wastewater by starting filter mechanism, filtered wastewater is discharged by feeding mechanism, the filter screen of filter mechanism is cleaned by starting cleaning mechanism, the temperature in feeding mechanism is controlled by starting temperature control mechanism, heating and refrigeration are carried out in feeding mechanism, and the impurity of cooling is discharged by filter mechanism, improve the practicability of equipment;Including feeding mechanism;Still including temperature control mechanism, filter mechanism, stirring mechanism, exhaust mechanism and cleaning mechanism, temperature control mechanism is installed on feeding mechanism, filter mechanism is installed in the inside of feeding mechanism, stirring mechanism is installed in the inside of filter mechanism, exhaust mechanism is installed on feeding mechanism, and exhaust mechanism is located at the left side of temperature control mechanism, cleaning mechanism is installed in the inside of feeding mechanism, and cleaning mechanism is located at the outside of filter mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment devices, and in particular to a wastewater treatment device for the production of magnesium sulfate heptahydrate. Background Technology

[0002] Magnesium sulfate heptahydrate is an inorganic compound, belonging to the sulfate hydrates of magnesium, named for the seven water molecules of crystallization in its molecular structure. With its unique chemical properties and wide applicability, magnesium sulfate heptahydrate has become a key basic material in fields such as agricultural production, medical health, and industrial upgrading. With continuous breakthroughs in materials science and environmental protection technologies, its application boundaries are expected to expand further, providing important support for the high-quality development of related industries.

[0003] For example, the wastewater treatment device disclosed in the utility model patent application number CN202421178416.8 represents a class of prior art whose main structure includes a cover plate, an observation plate, a transmission gear, a dual-head motor, a drainage mechanism, a rotating rod, a fixing block, and filter holes. Wastewater treatment is achieved through the cooperation of the cover plate, observation plate, transmission gear, dual-head motor, drainage mechanism, rotating rod, fixing block, and filter holes.

[0004] Traditional wastewater treatment devices for magnesium sulfate heptahydrate production require multiple structural pieces of equipment to process the wastewater, resulting in wasted space. Furthermore, the filtration mechanism in traditional wastewater treatment devices is prone to clogging during the separation of solids from the wastewater, affecting filtration efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a wastewater treatment device for magnesium sulfate heptahydrate production. The wastewater is filtered by activating a filtration mechanism, discharged through a feeding mechanism, cleaned by activating a cleaning mechanism, and the temperature inside the feeding mechanism is controlled by activating a temperature control mechanism. The feeding mechanism is heated and cooled, and the cooled impurities are discharged through the filtration mechanism, thereby improving the practicality of the equipment.

[0006] This utility model discloses a wastewater treatment device for magnesium sulfate heptahydrate production, comprising a feeding mechanism; it also includes a temperature control mechanism, a filtration mechanism, a stirring mechanism, an exhaust mechanism, and a cleaning mechanism. The temperature control mechanism is installed on the feeding mechanism, the filtration mechanism is installed inside the feeding mechanism, the stirring mechanism is installed inside the filtration mechanism, the exhaust mechanism is installed on the feeding mechanism and located to the left of the temperature control mechanism, and the cleaning mechanism is installed inside the feeding mechanism and located outside the filtration mechanism. Wastewater from magnesium sulfate heptahydrate production is discharged into the filtration mechanism through the feeding mechanism. The filtration mechanism filters the wastewater, and the filtered wastewater is discharged through the feeding mechanism. The cleaning mechanism cleans the filter screen of the filtration mechanism. The temperature control mechanism controls the temperature inside the feeding mechanism, heating and cooling it. The stirring mechanism agitates the wastewater inside the filtration mechanism to ensure uniform heating and cooling. During the evaporation of the wastewater, the exhaust mechanism cools the gas discharged from the feeding mechanism, and the temperature control mechanism cools the solids inside the filtration mechanism. The cooled impurities are discharged through the filtration mechanism, improving the practicality of the equipment.

[0007] Preferably, the feeding mechanism includes a workbench, a processing tank, a feed pipe, a wastewater pump, a wastewater bucket, and a drain pipe. The processing tank is installed on the top of the workbench, the output end of the feed pipe is connected to the top of the processing tank, the input end of the wastewater pump is connected to the lower outer wall of the processing tank, the output end of the wastewater pump is connected to the top of the wastewater bucket, the wastewater bucket is located below the workbench, the input end of the drain pipe is connected to the outer wall of the wastewater bucket, and a valve is installed on the output end of the drain pipe. The workbench supports the processing tank. Wastewater from the production of magnesium sulfate heptahydrate is discharged into the filtration mechanism through the feed pipe. The filtered waste liquid in the processing tank is discharged into the wastewater bucket by activating the stirring mechanism. The waste liquid in the wastewater bucket is discharged through the drain pipe, improving the practicality of the equipment.

[0008] Preferably, the temperature control mechanism includes a heat exchanger, a first circulating pump, a first three-way pipe, a first refrigeration box, a heater, and a second three-way pipe. The heat exchanger is installed on the outer wall of the processing tank. The input end of the first circulating pump is connected to the output end of the heat exchanger, and the output end of the first circulating pump is connected to the input end of the first three-way pipe. Valves are respectively installed on the two sets of output ends of the first three-way pipe. The input ends of the first refrigeration box and the heater are respectively connected to the two sets of output ends of the first three-way pipe, and the output ends of the first refrigeration box and the heater are respectively connected to the two sets of input ends of the second three-way pipe. The output end of the second three-way pipe is connected to the input end of the heat exchanger. By starting the first circulating pump, the liquid in the heat exchanger is discharged into the first three-way pipe, and then discharged into the first refrigeration box for cooling and into the heater for heating. The cooled and heated liquid is discharged into the heat exchanger through the second three-way pipe to heat and cool the processing tank, improving the practicality of the equipment.

[0009] Preferably, the filtration mechanism includes a filter barrel, a discharge pipe, a gear ring, a gear, and a first motor. The bottom end of the filter barrel is connected to the input end of the discharge pipe. The outer wall of the discharge pipe is rotatably mounted on the bottom end of the filter barrel. A valve is installed on the input end of the discharge pipe. The inner ring of the gear ring is mounted on the outer wall of the discharge pipe, and the outer ring of the gear ring meshes with the outer ring of the gear. The inner ring of the gear is mounted on the output end of the first motor. Wastewater is discharged into the filter barrel. By starting the first motor, the gear rotates, and the meshing of the gear and gear ring causes the discharge pipe to rotate. The wastewater is filtered by the gear ring, and the filtered impurities are discharged through the discharge pipe, improving the practicality of the equipment.

[0010] Preferably, the stirring mechanism includes a second motor, a reducer, a stirring shaft, and multiple stirring blades. The output end of the second motor is connected to the input end of the reducer, and the top end of the stirring shaft is connected to the output end of the reducer. Multiple stirring blades are provided on the stirring shaft. By starting the second motor and driving it through the reducer, the stirring shaft is rotated, and the wastewater in the filter tank is stirred by the multiple stirring blades, thereby improving the practicality of the equipment.

[0011] Preferably, the exhaust mechanism includes a drying pipe, a first exhaust pipe, a first air pump, a condenser pipe, a second circulation pump, a second refrigeration chamber, and a drain pipe. The inlet end of the drying pipe is connected to the outer wall of the treatment tank, and a baffle plate is provided on the inner wall of the drying pipe. The inlet end of the first exhaust pipe is connected to the outlet end of the drying pipe, and the inlet end of the first air pump is connected to the outlet end of the first exhaust pipe. The condenser pipe is installed on the outer wall of the drying pipe. The inlet end of the second circulation pump is connected to the outlet end of the condenser pipe, and the outlet end of the second circulation pump is connected to the inlet end of the second refrigeration chamber. The outlet end of the second refrigeration chamber is connected to the inlet end of the condenser pipe. The inlet of the drain pipe is connected to the outer wall of the drying tube, and the inlet of the drain pipe is located below the baffle plate inside the drying tube. The outlet of the drain pipe is connected to the top of the wastewater tank. By starting the first air pump, the gas in the treatment tank is discharged from the drying tube. By starting the second circulation pump, the coolant in the condenser is discharged into the second refrigeration box, where it is cooled. The cooled coolant is then discharged into the condenser to condense the gas in the drying tube. The condensate is discharged into the wastewater tank through the drain pipe. The dried gas is discharged from the first air pump through the first exhaust pipe, improving the practicality of the equipment.

[0012] Preferably, the cleaning mechanism includes a second air pump, a diversion pipe, and multiple sets of second exhaust pipes. The output end of the second air pump is connected to the input end of the diversion pipe, and the diversion pipe is provided with multiple sets of output ends. The input ends of the multiple sets of second exhaust pipes are respectively connected to the multiple sets of input ends of the diversion pipe. By starting the second air pump, gas is discharged into the diversion pipe and discharged through the multiple sets of second exhaust pipes to clean the filter canister, preventing the filter canister from becoming clogged during the filtration process and improving the practicality of the equipment.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: Wastewater from the production of magnesium sulfate heptahydrate is discharged into the filtration mechanism via the feeding mechanism. The wastewater is filtered by activating the filtration mechanism, and the filtered wastewater is discharged through the feeding mechanism. The filter screen of the filtration mechanism is cleaned by activating the cleaning mechanism. The temperature inside the feeding mechanism is controlled by activating the temperature control mechanism, which heats and cools the inside of the feeding mechanism. The wastewater inside the filtration mechanism is stirred by activating the stirring mechanism, which makes the internal heating and cooling uniform. During the evaporation of wastewater, the gas discharged from the feeding mechanism is cooled by activating the exhaust mechanism. The solids inside the filtration mechanism are cooled by activating the temperature control mechanism, and the cooled impurities are discharged through the filtration mechanism, thus improving the practicality of the equipment. Attached Figure Description

[0014] Figure 1 This is an isometric sectional view of the present invention; Figure 2 This is an isometric sectional view of the feeding mechanism of this utility model; Figure 3 This is an isometric schematic diagram of the temperature control mechanism of this utility model; Figure 4 This is an isometric schematic diagram of the filter mechanism of this utility model; Figure 5 This is an isometric schematic diagram of the stirring mechanism of this utility model; Figure 6 This is an isometric schematic diagram of the exhaust mechanism of this utility model; Figure 7 This is an isometric schematic diagram of the cleaning mechanism of this utility model.

[0015] The attached diagram shows the following components: 01, feeding mechanism; 11, workbench; 12, processing tank; 13, feed pipe; 14, wastewater pump; 15, wastewater tank; 16, drain pipe; 02, temperature control mechanism; 21, heat exchanger; 22, first circulation pump; 23, first tee pipe; 24, first refrigeration box; 25, heater; 26, second tee pipe; 03, filtration mechanism; 31, filter tank; 32, discharge pipe; 33, toothed ring; 34. 35. Gear; 46. First motor; 47. Stirring mechanism; 48. Second motor; 49. Reducer; 40. Stirring shaft; 41. Stirring blade; 52. Exhaust mechanism; 53. Drying pipe; 54. First exhaust pipe; 55. First air pump; 56. Condenser pipe; 57. Second circulation pump; 68. Second refrigeration box; 59. Drain pipe; 60. Cleaning mechanism; 61. Second air pump; 62. Diverter pipe; 63. Second exhaust pipe. Detailed Implementation

[0016] 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

[0017] like Figure 1 As shown, a wastewater treatment device for magnesium sulfate heptahydrate production includes a feeding mechanism 01; it also includes a temperature control mechanism 02, a filtration mechanism 03, a stirring mechanism 04, an exhaust mechanism 05, and a cleaning mechanism 06. The temperature control mechanism 02 is installed on the feeding mechanism 01, the filtration mechanism 03 is installed inside the feeding mechanism 01, the stirring mechanism 04 is installed inside the filtration mechanism 03, the exhaust mechanism 05 is installed on the feeding mechanism 01 and is located to the left of the temperature control mechanism 02, and the cleaning mechanism 06 is installed inside the feeding mechanism 01 and is located outside the filtration mechanism 03. Wastewater from magnesium sulfate heptahydrate production is discharged into the filtration mechanism 03 via the feeding mechanism 01. The filtration mechanism 03 is activated to filter the wastewater, which is then discharged through the feeding mechanism 01. The cleaning mechanism 06 is activated to clean the filter screen of the filtration mechanism 03. The temperature control mechanism 02 is activated to control the temperature within the feeding mechanism 01, thus heating and cooling the area. The stirring mechanism 04 is activated to stir the wastewater within the filtration mechanism 03, ensuring uniform heating and cooling. During the evaporation of the wastewater, the exhaust mechanism 05 is activated to expel and cool the gas discharged from the feeding mechanism 01. The temperature control mechanism 02 is activated to cool the solids within the filtration mechanism 03, and the cooled impurities are discharged through the filtration mechanism 03, improving the practicality of the equipment. like Figure 2 As shown, the feeding mechanism 01 includes a workbench 11, a processing tank 12, a feeding pipe 13, a wastewater pump 14, a wastewater tank 15, and a drain pipe 16. The processing tank 12 is installed at the top of the workbench 11. The output end of the feeding pipe 13 is connected to the top of the processing tank 12. The input end of the wastewater pump 14 is connected to the lower part of the outer wall of the processing tank 12. The output end of the wastewater pump 14 is connected to the top of the wastewater tank 15. The wastewater tank 15 is located below the workbench 11. The input end of the drain pipe 16 is connected to the outer wall of the wastewater tank 15. A valve is provided on the output end of the drain pipe 16. like Figure 3As shown, the temperature control mechanism 02 includes a heat exchanger 21, a first circulating pump 22, a first three-way pipe 23, a first refrigeration box 24, a heater 25, and a second three-way pipe 26. The heat exchanger 21 is installed on the outer wall of the processing tank 12. The input end of the first circulating pump 22 is connected to the output end of the heat exchanger 21, and the output end of the first circulating pump 22 is connected to the input end of the first three-way pipe 23. Valves are respectively installed on the two sets of output ends of the first three-way pipe 23. The input ends of the first refrigeration box 24 and the heater 25 are respectively connected to the two sets of output ends of the first three-way pipe 23. The output ends of the first refrigeration box 24 and the heater 25 are respectively connected to the two sets of input ends of the second three-way pipe 26. The output end of the second three-way pipe 26 is connected to the input end of the heat exchanger 21. like Figure 4 As shown, the filtration mechanism 03 includes a filter barrel 31, a discharge pipe 32, a gear ring 33, a gear 34, and a first motor 35. The bottom end of the filter barrel 31 is connected to the input end of the discharge pipe 32. The outer wall of the discharge pipe 32 is rotatably mounted on the bottom end of the processing barrel 12. A valve is provided on the input end of the discharge pipe 32. The inner ring of the gear ring 33 is mounted on the outer wall of the discharge pipe 32. The outer ring of the gear ring 33 meshes with the outer ring of the gear 34. The inner ring of the gear 34 is mounted on the output end of the first motor 35. like Figure 5 As shown, the stirring mechanism 04 includes a second motor 41, a reducer 42, a stirring shaft 43, and multiple stirring blades 44. The output end of the second motor 41 is connected to the input end of the reducer 42, the top end of the stirring shaft 43 is connected to the output end of the reducer 42, and multiple stirring blades 44 are provided on the stirring shaft 43. Workbench 11 supports processing tank 12. Wastewater from magnesium sulfate heptahydrate production is discharged into filtration mechanism 03 via feed pipe 13. The filtered wastewater in processing tank 12 is discharged into wastewater tank 15 by activating stirring mechanism 04. Wastewater in wastewater tank 15 is discharged through drain pipe 16. Liquid in heat exchanger 21 is discharged into first three-way pipe 23 by activating first circulation pump 22. Liquid is then discharged into first refrigeration box 24 for cooling via first three-way pipe 23, and into heater 25 for heating. The cooled and heated liquids... The wastewater is discharged into the heat exchanger 21 through the second three-way pipe 26, where it is heated and cooled in the treatment tank 12. The wastewater is then discharged into the filter tank 31. By starting the first motor 35, the gear 34 is rotated, and the gear 34 meshes with the gear ring 33, causing the discharge pipe 32 to rotate. The wastewater is filtered through the gear ring 33, and the filtered impurities are discharged through the discharge pipe 32. By starting the second motor 41, the stirring shaft 43 is rotated through the reducer 42. The wastewater in the filter tank 31 is stirred by multiple stirring blades 44, improving the practicality of the equipment. Example 2

[0018] like Figure 6As shown, based on Embodiment 1, an exhaust mechanism 05 is also included. The exhaust mechanism 05 includes a drying pipe 51, a first exhaust pipe 52, a first air pump 53, a condenser pipe 54, a second circulation pump 55, a second refrigeration box 56, and a drain pipe 57. The input end of the drying pipe 51 is connected to the outer wall of the treatment tank 12, and a baffle is provided on the inner wall of the drying pipe 51. The input end of the first exhaust pipe 52 is connected to the output end of the drying pipe 51. The input end of the first air pump 53 is connected to the output end of the first exhaust pipe 52. The condenser pipe 54 is installed on the outer wall of the drying pipe 51. The input end of the second circulation pump 55 is connected to the output end of the condenser pipe 54. The output end of the second circulation pump 55 is connected to the input end of the second refrigeration box 56. The output end of the second refrigeration box 56 is connected to the input end of the condenser pipe 54. The input end of the drain pipe 57 is connected to the outer wall of the drying pipe 51, and the input end of the drain pipe 57 is located below the baffle inside the drying pipe 51. The output end of the drain pipe 57 is connected to the top of the wastewater tank 15. By starting the first air pump 53, the gas in the treatment tank 12 is discharged through the drying tube 51. By starting the second circulation pump 55, the coolant in the condenser tube 54 is discharged into the second refrigeration box 56, where it is cooled. The cooled coolant is then discharged into the condenser tube 54 to condense the gas in the drying tube 51. The condensate is discharged into the wastewater tank 15 through the drain pipe 57. The dried gas is then discharged through the first exhaust pipe 52 to the first air pump 53, thus improving the practicality of the equipment. Example 3

[0019] like Figure 7 As shown, based on Embodiment 1, a cleaning mechanism 06 is also included. The cleaning mechanism 06 includes a second air pump 61, a diversion pipe 62, and multiple sets of second exhaust pipes 63. The output end of the second air pump 61 is connected to the input end of the diversion pipe 62. Multiple sets of output ends are provided on the diversion pipe 62. The input ends of the multiple sets of second exhaust pipes 63 are respectively connected to the multiple sets of input ends of the diversion pipe 62. By activating the second air pump 61, gas is discharged into the diversion pipe 62 and then discharged through multiple sets of second exhaust pipes 63 to clean the filter canister 31, preventing clogging during the filtration process and improving the practicality of the equipment.

[0020] like Figures 1 to 7As shown, this utility model discloses a wastewater treatment device for magnesium sulfate heptahydrate production. During operation, the workbench 11 first supports the treatment tank 12. The wastewater from magnesium sulfate heptahydrate production is discharged into the filtration mechanism 03 via the feed pipe 13. The stirring mechanism 04 then discharges the filtered waste liquid from the treatment tank 12 into the wastewater tank 15. The waste liquid in the wastewater tank 15 is discharged through the drain pipe 16. The wastewater is then discharged into the filter tank 31. The first motor 35 is activated, causing the gear 34 to rotate. The gear 34 meshes with the gear ring 33, causing the discharge pipe 32 to rotate. The gear ring 33 filters the wastewater, and the filtered impurities are discharged through the discharge pipe 32. Next, the first circulating pump 22 discharges the liquid from the heat exchanger 21 into the first three-way pipe 23. The liquid is then discharged through the first three-way pipe 23 into the first refrigeration box 24 for cooling, and then into the heater 25 for heating. The cooled and heated liquids are discharged through the second three-way pipe 26 back to the heat exchanger 21. Inside the first stage, the treatment tank 12 is heated and cooled. Then, the second motor 41 is started and driven by the reducer 42 to rotate the stirring shaft 43. The wastewater in the filter tank 31 is stirred by multiple stirring blades 44. After that, the first air pump 53 is started to discharge the gas in the treatment tank 12 through the drying pipe 51. The second circulation pump 55 is started to discharge the coolant in the condenser pipe 54 into the second refrigeration box 56, where it is cooled. The cooled coolant is discharged into the condenser pipe 54 to condense the gas in the drying pipe 51. The condensate is discharged into the wastewater tank 15 through the drain pipe 57. The dried gas is discharged through the first exhaust pipe 52 to the first air pump 53. Finally, the second air pump 61 is started to discharge the gas into the diversion pipe 62, which is discharged through multiple sets of second exhaust pipes 63 to clean the filter tank 31, prevent the filter tank 31 from clogging during the filtration process, and improve the practicality of the equipment.

[0021] The wastewater pump 14, the first circulation pump 22, the first refrigeration box 24, the heater 25, the first motor 35, the second motor 41, the reducer 42, the first air pump 53, the second circulation pump 55, the second refrigeration box 56, and the second air pump 61 of this utility model are purchased from the market. 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.

[0022] The main functions achieved by this utility model are: to filter wastewater by activating the filtration mechanism 03, and the filtered wastewater is discharged through the feeding mechanism 01; to clean the filter screen of the filtration mechanism 03 by activating the cleaning mechanism 06; to control the temperature inside the feeding mechanism 01 by activating the temperature control mechanism 02, and to heat and cool the inside of the feeding mechanism 01, and to discharge the cooled impurities through the filtration mechanism 03, thereby improving the practicality of the equipment.

[0023] 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 wastewater treatment device for magnesium sulfate heptahydrate production, comprising a feeding mechanism (01); characterized in that, It also includes a temperature control mechanism (02), a filter mechanism (03), a stirring mechanism (04), an exhaust mechanism (05), and a cleaning mechanism (06). The temperature control mechanism (02) is installed on the feeding mechanism (01), the filter mechanism (03) is installed inside the feeding mechanism (01), the stirring mechanism (04) is installed inside the filter mechanism (03), the exhaust mechanism (05) is installed on the feeding mechanism (01), and the exhaust mechanism (05) is located to the left of the temperature control mechanism (02). The cleaning mechanism (06) is installed inside the feeding mechanism (01), and the cleaning mechanism (06) is located outside the filter mechanism (03).

2. The wastewater treatment device for magnesium sulfate heptahydrate production as described in claim 1, characterized in that, The feeding mechanism (01) includes a workbench (11), a processing tank (12), a feeding pipe (13), a wastewater pump (14), a wastewater tank (15), and a drain pipe (16). The processing tank (12) is installed on the top of the workbench (11). The output end of the feeding pipe (13) is connected to the top of the processing tank (12). The input end of the wastewater pump (14) is connected to the lower part of the outer wall of the processing tank (12). The output end of the wastewater pump (14) is connected to the top of the wastewater tank (15). The wastewater tank (15) is located below the workbench (11). The input end of the drain pipe (16) is connected to the outer wall of the wastewater tank (15). A valve is installed on the output end of the drain pipe (16).

3. The wastewater treatment device for magnesium sulfate heptahydrate production as described in claim 2, characterized in that, The temperature control mechanism (02) includes a heat exchanger (21), a first circulating pump (22), a first three-way pipe (23), a first refrigeration box (24), a heater (25), and a second three-way pipe (26). The heat exchanger (21) is installed on the outer wall of the processing tank (12). The input end of the first circulating pump (22) is connected to the output end of the heat exchanger (21). The output end of the first circulating pump (22) is connected to the input end of the first three-way pipe (23). Valves are respectively installed on the two sets of output ends of the first three-way pipe (23). The input ends of the first refrigeration box (24) and the heater (25) are respectively connected to the two sets of output ends of the first three-way pipe (23). The output ends of the first refrigeration box (24) and the heater (25) are respectively connected to the two sets of input ends of the second three-way pipe (26). The output end of the second three-way pipe (26) is connected to the input end of the heat exchanger (21).

4. The wastewater treatment device for magnesium sulfate heptahydrate production as described in claim 2, characterized in that, The filtration mechanism (03) includes a filter barrel (31), a discharge pipe (32), a gear ring (33), a gear (34), and a first motor (35). The bottom end of the filter barrel (31) is connected to the input end of the discharge pipe (32). The outer wall of the discharge pipe (32) is rotatably mounted on the bottom end of the processing barrel (12). A valve is provided on the input end of the discharge pipe (32). The inner ring of the gear ring (33) is mounted on the outer wall of the discharge pipe (32). The outer ring of the gear ring (33) meshes with the outer ring of the gear (34). The inner ring of the gear (34) is mounted on the output end of the first motor (35).

5. The wastewater treatment device for magnesium sulfate heptahydrate production as described in claim 1, characterized in that, The stirring mechanism (04) includes a second motor (41), a reducer (42), a stirring shaft (43), and multiple stirring blades (44). The output end of the second motor (41) is connected to the input end of the reducer (42), the top end of the stirring shaft (43) is connected to the output end of the reducer (42), and multiple stirring blades (44) are provided on the stirring shaft (43).

6. The wastewater treatment device for magnesium sulfate heptahydrate production as described in claim 2, characterized in that, The exhaust mechanism (05) includes a drying pipe (51), a first exhaust pipe (52), a first air pump (53), a condenser pipe (54), a second circulation pump (55), a second refrigeration box (56), and a drain pipe (57). The input end of the drying pipe (51) is connected to the outer wall of the processing tank (12), and a baffle is provided on the inner wall of the drying pipe (51). The input end of the first exhaust pipe (52) is connected to the output end of the drying pipe (51), and the input end of the first air pump (53) is connected to the output end of the first exhaust pipe (52). The condenser pipe (54) Installed on the outer wall of the drying tube (51), the input end of the second circulation pump (55) is connected to the output end of the condenser tube (54), the output end of the second circulation pump (55) is connected to the input end of the second refrigeration box (56), the output end of the second refrigeration box (56) is connected to the input end of the condenser tube (54), the input end of the drain pipe (57) is connected to the outer wall of the drying tube (51), and the input end of the drain pipe (57) is located below the baffle plate inside the drying tube (51), and the output end of the drain pipe (57) is connected to the top of the wastewater tank (15).

7. The wastewater treatment device for magnesium sulfate heptahydrate production as described in claim 1, characterized in that, The cleaning mechanism (06) includes a second air pump (61), a diverter pipe (62) and multiple sets of second exhaust pipes (63). The output end of the second air pump (61) is connected to the input end of the diverter pipe (62). Multiple sets of output ends are provided on the diverter pipe (62), and the input ends of the multiple sets of second exhaust pipes (63) are respectively connected to the multiple sets of input ends of the diverter pipe (62).

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