Zinc sulfate evaporative crystallization drying equipment

Abstract

The utility model provides zinc sulfate evaporative crystallization drying equipment, and solves the problems that a heat supply device of a vibrated fluidized bed needs to provide more heat energy to meet the drying requirement of the vibrated fluidized bed and the use amount of energy is increased because hot air can be pumped away while dust is pumped out by an air draft device. The vibrating fluidized bed comprises a vibrating fluidized bed body, the vibrating fluidized bed body comprises an upper shell of a lower opening structure and a lower shell fixedly arranged at the bottom of the upper shell, the lower shell is of an upper opening structure, and a vibrating motor is fixedly arranged on the front side of the lower shell. According to the utility model, the hot air after drying materials is dedusted, and the rotary dehumidifier is selected to adsorb moisture generated in the hot air drying process, so that the influence on the temperature of the hot air before and after dehumidification is reduced, and then the hot air is conveyed into the first suction fan through the third connecting pipe to be recycled; the power consumption of the heat supply device of the vibrated fluidized bed is reduced, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the field of chemical production, in particular to zinc sulfate evaporation crystallization drying equipment. Background Art

[0002] Zinc sulfate is an inorganic compound in the form of colorless orthorhombic crystals or white crystals, granules or powder. It is a natural mineral resource. In industrial manufacturing, zinc sulfate is the main raw material for producing zinc barium white and zinc salts. It can also be used as a printing and dyeing mordant, a wood and leather preservative, and an important auxiliary raw material for the production of viscose and vinylon fibers. In addition, it is also used in the electroplating and electrolysis industries, and can also be used to manufacture cables. It has a wide range of applications.

[0003] In the production and preparation process of zinc sulfate, the hydrate form or anhydrous form of zinc sulfate can be produced through evaporation crystallization and drying process. Evaporation crystallization is to gradually evaporate the solvent in the zinc sulfate solution to make it reach a supersaturated state, thereby promoting the crystallization of zinc sulfate, while drying is to convert zinc sulfate into a hydrate form or anhydrous form by removing part or all of the crystal water molecules in the crystal.

[0004] Zinc sulfate is often dried using a vibrating fluidized bed to dry the zinc sulfate after evaporation and crystallization. The vibrating fluidized bed has the advantages of good solid particle mixing and a large heat and mass transfer surface area between the gas and solid phases. When the vibrating fluidized bed is used to dry zinc sulfate, dust is easily generated. An exhaust device is required to suck out the dust to prevent the dust from spreading from the inlet and outlet to the outside of the vibrating fluidized bed, which poses a threat to the physical and mental health of the workers. However, the exhaust device will extract the hot air while extracting the dust, so that the heating device of the vibrating fluidized bed needs to provide more thermal energy to meet the drying needs of the vibrating fluidized bed, increasing the use of energy. Utility Model Content

[0005] In order to solve the problem in the background technology that the exhaust device will extract part of the hot air while extracting the dust, so that the heating device of the vibrating fluidized bed needs to provide more heat energy to meet the drying demand of the vibrating fluidized bed, increasing the energy consumption, the utility model proposes a zinc sulfate evaporation crystallization drying equipment.

[0006] The technical scheme of the utility model is: a zinc sulfate evaporation crystallization drying device, comprising a vibrating fluidized bed, the vibrating fluidized bed comprising an upper shell with a lower opening structure and a lower shell fixedly arranged at the bottom of the upper shell, the lower shell is an upper opening structure, a vibration motor is fixedly arranged on the front side of the lower shell, a plurality of shock-absorbing supports are fixedly arranged at the bottom of the lower shell, a feed pipe is fixedly arranged at the top of the left end of the upper shell, a discharge pipe is fixedly arranged at the bottom of the right end of the upper shell, a conveying plate is fixedly arranged at the opening of the upper shell, the conveying plate is tilted from top to bottom and from left to right, and a plurality of tapered tubes extending upward are evenly opened on the conveying plate;

[0007] A hot air system and a cold air system are respectively provided on the front side of the lower shell, the cold air system is used to input cold air into the vibrating fluidized bed, and the hot air system is used to input hot air into the vibrating fluidized bed. The hot air system includes a first suction fan, and a heater is fixedly provided at the air outlet of the first suction fan through a pipeline, and the air outlet of the heater is fixedly connected and communicated with an air intake pipeline system, and the air intake pipeline system is fixedly connected and communicated with the front side of the lower shell;

[0008] A circulation pipe system is provided on the top of the upper shell, and the circulation pipe system is fixedly connected and communicated with a bag dust collector. The air outlet of the bag dust collector is fixedly connected and communicated with a rotary dehumidifier through a pipe, and the air outlet of the rotary dehumidifier is fixedly connected and communicated with a third connecting pipe. The end of the third connecting pipe away from the rotary dehumidifier is fixedly connected and communicated with the air inlet of the first suction fan.

[0009] Preferably, the cooling system includes a second suction fan, the air outlet of the second suction fan is fixedly connected and communicated with a refrigerator, the refrigerator is located to the right of the heater, and the air outlet of the refrigerator is fixedly connected and communicated with the front side of the right end of the lower shell;

[0010] A second connecting pipe is fixedly provided on the top of the right end of the upper shell, and the end of the second connecting pipe away from the upper shell is fixedly connected and connected to a cyclone dust collector, the air outlet of the cyclone dust collector is fixedly connected and connected to an exhaust pipe, and a third suction fan is fixedly provided on the end of the exhaust pipe away from the cyclone dust collector.

[0011] Preferably, the air intake duct system includes an air intake connecting pipe fixedly connected to and connected to the air outlet of the heater, and the air intake connecting pipe is fixedly connected to and connected to a plurality of air intake branch pipes spaced apart on the left and right, and one end of the plurality of air intake branch pipes away from the air intake connecting pipe is fixedly connected to and connected to the front side of the lower shell body.

[0012] Preferably, the circulating pipe system includes an air outlet connecting pipe fixedly connected and connected to the air inlet of the bag dust collector, and the air outlet connecting pipe is fixedly connected and connected to a plurality of air outlet branch pipes spaced apart on the left and right, and one end of the air outlet branch pipes away from the air outlet connecting pipe is fixedly connected and connected to the top of the upper shell.

[0013] Preferably, a first partition is fixedly provided in the lower shell, the top of the first partition is fixedly connected to the bottom of the conveying plate, the first partition divides the lower shell and the conveying plate into a hot air inlet chamber and a cold air inlet chamber, the hot air inlet chamber is located on the left side of the cold air inlet chamber, a plurality of air intake branch pipes are connected to the hot air inlet chamber, and the air outlet of the refrigerator is connected to the cold air inlet chamber.

[0014] Preferably, a second partition is fixedly provided in the upper shell, and a gap is left between the lower end of the second partition and the conveying plate. The second partition divides the upper shell and the conveying plate into a hot air outlet chamber and a cold air outlet chamber. The hot air outlet chamber is located on the left of the cold air outlet chamber, and the hot air outlet chamber is located above the hot air inlet chamber. The cold air outlet chamber is located above the cold air inlet chamber. Multiple air outlet branch pipes are connected to the cold air outlet chamber, and the second connecting pipe is connected to the cold air outlet chamber.

[0015] Preferably, the lower shell includes a first bottom plate and a second bottom plate located at the bottom, the first bottom plate is tilted from top to bottom and from left to right, the second bottom plate is tilted from top to bottom and from right to left, the right end of the first bottom plate is fixedly connected to the left end of the second bottom plate, a through groove which is transparent from top to bottom is provided at the connection between the first bottom plate and the second bottom plate, a discharger with an upper opening structure is fixedly provided at the bottom of the connection between the first bottom plate and the second bottom plate, and the opening of the discharger corresponds to the through groove up and down.

[0016] Preferably, the bottom of the discharger is tilted from top to bottom and from back to front.

[0017] Advantages of the utility model: The utility model removes dust from the hot air after drying the material, and uses a rotary dehumidifier to adsorb moisture generated in the hot air drying process, thereby reducing the impact on the temperature of the hot air before and after dehumidification, and then transports the hot air to the first suction fan through the third connecting pipe for recovery and reuse, thereby reducing the power consumption of the vibrating fluidized bed heating device and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a structural front cross-sectional view of the vibrating fluidized bed of the utility model;

[0021] Figure 3It is a structural side sectional view of the discharger of the utility model.

[0022] In the figure: 1. upper shell; 2. lower shell; 3. feed pipe; 4. discharge pipe; 5. air inlet branch pipe; 6. air inlet connecting pipe; 7. vibration motor; 8. first suction fan; 9. second suction fan; 10. heater; 11. refrigerator; 12. air outlet branch pipe; 13. air outlet connecting pipe; 15. second connecting pipe; 16. third connecting pipe; 17. shock-absorbing support; 18. bag filter; 19. cyclone filter; 20. rotary dehumidifier; 21. exhaust pipe; 22. conveying plate; 23. first partition; 24. second partition; 25. first bottom plate; 26. second bottom plate; 27. discharger. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1: A zinc sulfate evaporation crystallization drying device, such as Figure 1-3 As shown, the vibrating fluidized bed includes an upper shell 1 with a lower opening structure and a lower shell 2 fixed to the bottom of the upper shell 1. The lower shell 2 is an upper opening structure. A vibration motor 7 is fixedly provided on the front side of the lower shell 2. A plurality of shock-absorbing supports 17 are fixedly provided on the bottom of the lower shell 2. A feed pipe 3 is fixedly provided on the top of the left end of the upper shell 1. A discharge pipe 4 is fixedly provided on the bottom of the right end of the upper shell 1. A conveying plate 22 is fixedly provided at the opening of the upper shell 1. The conveying plate 22 is tilted from top to bottom and from left to right. A plurality of tapered tubes extending upward are evenly provided on the conveying plate 22. The tapered tubes can reduce the probability of materials falling under the conveying plate 22.

[0025] The lower shell 2 includes a first bottom plate 25 and a second bottom plate 26 located at the bottom. The first bottom plate 25 is tilted from top to bottom and from left to right, and the second bottom plate 26 is tilted from top to bottom and from right to left. The right end of the first bottom plate 25 is fixedly connected to the left end of the second bottom plate 26. A through groove that is transparent from top to bottom is opened at the connection between the first bottom plate 25 and the second bottom plate 26. A discharger 27 with an upper opening structure is fixedly provided at the bottom of the connection between the first bottom plate 25 and the second bottom plate 26. The bottom of the discharger 27 is tilted from top to bottom and from back to front, and the opening of the discharger 27 corresponds to the through groove up and down. By opening a through groove at one end where the first bottom plate 25 and the second bottom plate 26 are lower and arranging the discharger 27 below the through groove, the material that falls from the conical tube to the bottom of the conveying plate 22 can be collected to prevent material waste.

[0026] A first partition 23 is fixedly provided in the lower shell body 2, and the top end of the first partition 23 is fixedly connected to the bottom end of the conveying plate 22. The first partition 23 divides the lower shell body 2 and the conveying plate 22 into a hot air inlet chamber and a cold air inlet chamber. By setting the first partition 23, direct contact between the hot air in the hot air inlet chamber and the cold air in the cold air inlet chamber can be avoided, which causes the hot air temperature to decrease or the cold air temperature to increase, affecting the drying of the material and the cooling of the material at the right end of the conveying plate 22. The hot air inlet chamber is located on the left of the cold air inlet chamber.

[0027] A second partition 24 is fixedly provided in the upper shell 1, and a gap is left between the lower end of the second partition 24 and the conveying plate 22 to avoid affecting the material transportation. The second partition 24 divides the upper shell 1 and the conveying plate 22 into a hot air outlet chamber and a cold air outlet chamber. By setting the second partition 24, it is possible to avoid direct contact between the hot air in the hot air outlet chamber and the cold air in the cold air outlet chamber, which would cause the hot air temperature to decrease or the cold air temperature to increase, affecting the drying of the material and the cooling of the material at the right end of the conveying plate 22; the hot air outlet chamber is located to the left of the cold air outlet chamber, the hot air outlet chamber is located above the hot air inlet chamber, and the cold air outlet chamber is located above the cold air inlet chamber.

[0028] A hot air system is provided on the front side of the lower shell 2, and the hot air system is used to input hot air into the vibrating fluidized bed to dry the material above the conveying plate 22. Specifically, the hot air system includes a first suction fan 8, and a heater 10 is fixedly provided at the air outlet of the first suction fan 8 through a pipeline. The heater 10 is used to heat the gas sucked by the first suction fan 8, and the air outlet of the heater 10 is fixedly connected and communicated with an air intake pipeline system. Specifically, the air intake pipeline system includes an inlet fixedly provided on the air outlet of the heater 10. An air connecting pipe 6 is fixedly connected and communicated with a plurality of air intake branch pipes 5 which are arranged at intervals on the left and right. One end of the plurality of air intake branch pipes 5 away from the air intake connecting pipe 6 is fixedly connected and communicated with the front side of the lower shell body 2, and the plurality of air intake branch pipes 5 are communicated with the hot air inlet chamber. By arranging a plurality of air intake branch pipes 5, the hot air in the air intake connecting pipe 6 is evenly delivered to the hot air inlet chamber to improve the uniformity and stability of the hot air, thereby improving the efficiency of the vibrating fluidized bed in drying materials and avoiding the local temperature in the hot air inlet chamber being too high or relatively too low.

[0029] A circulation pipeline system is provided at the top of the upper shell 1. Specifically, the circulation pipeline system includes a plurality of outlet branch pipes 12 fixedly connected and connected to the top of the upper shell 1 at intervals on the left and right. The top ends of the plurality of outlet branch pipes 12 are fixedly connected and connected to an outlet connecting pipe 13. The middle of the outlet connecting pipe 13 is fixedly connected and connected to a bag dust collector 18 through a pipeline. The bag dust collector 18 can remove dust particles in the gas. The air outlet of the bag dust collector 18 is fixedly connected and connected to a rotary dehumidifier 20 through a pipeline. The rotary dehumidifier 20 includes a humidity adsorption wheel and a dehumidification device. When the humid hot air after dust removal by the bag dust collector 18 passes through the humidity adsorption wheel, the humidity adsorption wheel can remove water in the humid hot air. The dehumidifier 20 is used to adsorb the moisture and then discharge the dry hot air. When the humidity adsorption wheel is full of moisture, it will rotate to another area and pass through the heated wind or hot air flow in the dehumidification equipment to evaporate the adsorbed moisture from the wheel and discharge it to the outside. The air outlet of the rotary dehumidifier 20 is fixedly connected and communicated with a third connecting pipe 16. The end of the third connecting pipe 16 away from the rotary dehumidifier 20 is fixedly connected and communicated with the air inlet of the first suction fan 8. The third connecting pipe 16 can be used to transport the hot air after dust removal and drying to the heater 10 through the first suction fan 8 to be heated to the drying temperature, so as to achieve the purpose of recycling the hot air and reduce the power consumption of the heating device of the vibrating fluidized bed and save energy.

[0030] A cooling system is provided on the front side of the lower shell 2, and the cooling system is used to input cooling air into the right end of the vibrating fluidized bed to cool the dried material and prevent the material from being overheated after being discharged and coming into contact with the external cold air and getting damp during the cooling process. Specifically, the cooling system includes a second suction fan 9, and the air outlet of the second suction fan 9 is fixedly connected and connected to a refrigerator 11. The refrigerator 11 is located on the right side of the heater 10, and the air outlet of the refrigerator 11 is fixedly connected and connected to the front side of the right end of the lower shell 2, and the air outlet of the refrigerator 11 is connected to the cold air inlet chamber.

[0031] A second connecting pipe 15 is fixedly provided on the top of the right end of the upper shell 1, and the second connecting pipe 15 is connected to the cold air outlet chamber. The end of the second connecting pipe 15 away from the upper shell 1 is fixedly connected and connected to a cyclone dust collector 19. The cyclone dust collector 19 is used to remove dust from the dust-containing cold air discharged from the cold air outlet chamber. The air outlet of the cyclone dust collector 19 is fixedly connected and connected to an exhaust pipe 21. A third suction fan is fixedly provided on the end of the exhaust pipe 21 away from the cyclone dust collector 19. The third suction fan is used to discharge the cold air after dust removal.

[0032] Working principle: When in use, add material into the feed pipe 3, and the material falls on the left end of the conveying plate 22. By starting the vibration motor 7 to drive the vibrating fluidized bed to vibrate, the material on the conveying plate 22 moves up and down under the action of vibration, and at the same time moves along the inclined direction of the bottom of the conveying plate 22. By starting the hot air system, the first suction fan 8 in the hot air system conveys air to the heater 10. The heater 10 heats the air and evenly conveys it to the hot air inlet chamber through the air intake pipe system. The hot air dries the material through the conical tube on the conveying plate 22, and then carries the dust generated during the vibration and drying of the material through the circulating pipe system into the bag filter 18 for dust removal. The humid hot air after dust removal enters the rotary dehumidifier 20 for dehumidification, and then the dried hot air is re-conveyed to the first suction fan 8 through the third connecting pipe 16 for reuse.

[0033] When in use, the cooling system is started at the same time. The second suction fan 9 in the cooling system conveys air to the refrigerator 11 for cooling, and conveys the cooled cold air to the cold air inlet chamber. The cold air cools the dried material through the conical tube on the conveying plate 22, and then enters the cyclone dust collector 19 through the second connecting pipe 15 carrying the dust generated during the vibration and drying of the material. The dust-removed gas is discharged by the third suction fan through the exhaust pipe 21.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A zinc sulfate evaporation crystallization drying equipment, characterized in that: The vibrating fluidized bed comprises an upper shell (1) with a lower opening structure and a lower shell (2) fixedly arranged at the bottom of the upper shell (1); the lower shell (2) is an upper opening structure; a vibration motor (7) is fixedly arranged at the front side of the lower shell (2); a plurality of shock-absorbing supports (17) are fixedly arranged at the bottom of the lower shell (2); a feed pipe (3) is fixedly arranged at the top of the left end of the upper shell (1); a discharge pipe (4) is fixedly arranged at the bottom of the right end of the upper shell (1); a conveying plate (22) is fixedly arranged at the opening of the upper shell (1); the conveying plate (22) is inclined from top to bottom and from left to right; and a plurality of tapered tubes extending upward are evenly arranged on the conveying plate (22); A hot air system and a cold air system are respectively provided on the front side of the lower shell (2), the cold air system is used to input cold air into the vibrating fluidized bed, and the hot air system is used to input hot air into the vibrating fluidized bed, the hot air system comprises a first suction fan (8), the air outlet of the first suction fan (8) is fixedly provided with a heater (10) via a pipeline, the air outlet of the heater (10) is fixedly connected to and communicated with an air intake pipeline system, and the air intake pipeline system is fixedly connected to and communicated with the front side of the lower shell (2); A circulation pipe system is provided at the top of the upper shell (1), the circulation pipe system is fixedly connected to and communicated with a bag filter (18), the air outlet of the bag filter (18) is fixedly connected to and communicated with a rotary dehumidifier (20) via a pipe, the air outlet of the rotary dehumidifier (20) is fixedly connected to and communicated with a third connecting pipe (16), and one end of the third connecting pipe (16) away from the rotary dehumidifier (20) is fixedly connected to and communicated with an air inlet of the first suction fan (8).

2. A zinc sulfate evaporation crystallization drying equipment according to claim 1, characterized in that: The cooling system comprises a second suction fan (9), the air outlet of the second suction fan (9) is fixedly connected to and communicated with a refrigerator (11), the refrigerator (11) is located to the right of the heater (10), and the air outlet of the refrigerator (11) is fixedly connected to and communicated with the front side of the right end of the lower shell (2); A second connecting pipe (15) is fixedly provided at the top of the right end of the upper shell (1); one end of the second connecting pipe (15) away from the upper shell (1) is fixedly connected to and communicated with a cyclone dust collector (19); an air outlet of the cyclone dust collector (19) is fixedly connected to and communicated with an exhaust pipe (21); and one end of the exhaust pipe (21) away from the cyclone dust collector (19) is fixedly provided with a third suction fan.

3. A zinc sulfate evaporation crystallization drying equipment according to claim 1, characterized in that: The air intake duct system comprises an air intake connecting pipe (6) fixedly connected to and connected to an air outlet of the heater (10); a plurality of air intake branch pipes (5) arranged at intervals on the left and right are fixedly connected to and connected to the air intake connecting pipe (6); and ends of the plurality of air intake branch pipes (5) away from the air intake connecting pipe (6) are fixedly connected to and connected to the front side of the lower shell body (2).

4. A zinc sulfate evaporation crystallization drying equipment according to claim 1, characterized in that: The circulation pipeline system comprises an air outlet connecting pipe (13) fixedly connected to and connected to the air inlet of the bag filter (18); a plurality of air outlet branch pipes (12) arranged at intervals on the left and right are fixedly connected to and connected to the air outlet connecting pipe (13); and ends of the air outlet branch pipes (12) away from the air outlet connecting pipe (13) are fixedly connected to and connected to the top of the upper shell (1).

5. A zinc sulfate evaporation, crystallization and drying equipment according to any one of claims 2 to 4, characterized in that: A first partition (23) is fixedly provided in the lower shell (2), the top end of the first partition (23) is fixedly connected to the bottom of the conveying plate (22), the first partition (23) divides the lower shell (2) and the conveying plate (22) into a hot air inlet chamber and a cold air inlet chamber, the hot air inlet chamber is located to the left of the cold air inlet chamber, a plurality of air inlet branch pipes (5) are connected to the hot air inlet chamber, and the air outlet of the refrigerator (11) is connected to the cold air inlet chamber.

6. A zinc sulfate evaporation crystallization drying equipment according to claim 5, characterized in that: A second partition (24) is fixedly provided in the upper shell (1), a gap being left between the lower end of the second partition (24) and the conveying plate (22), the second partition (24) dividing the space between the upper shell (1) and the conveying plate (22) into a hot air outlet chamber and a cold air outlet chamber, the hot air outlet chamber being located to the left of the cold air outlet chamber, the hot air outlet chamber being located above the hot air inlet chamber, the cold air outlet chamber being located above the cold air inlet chamber, a plurality of air outlet branch pipes (12) being connected to the cold air outlet chamber, and a second connecting pipe (15) being connected to the cold air outlet chamber.

7. A zinc sulfate evaporation crystallization drying equipment according to claim 1, characterized in that: The lower shell (2) comprises a first bottom plate (25) and a second bottom plate (26) located at the bottom, the first bottom plate (25) being arranged obliquely from top to bottom and from left to right, and the second bottom plate (26) being arranged obliquely from top to bottom and from right to left, the right end of the first bottom plate (25) being fixedly connected to the left end of the second bottom plate (26), a through slot which is transparent from top to bottom being provided at the connection between the first bottom plate (25) and the second bottom plate (26), a discharger (27) having an upper opening structure being fixedly provided at the bottom of the connection between the first bottom plate (25) and the second bottom plate (26), and the opening of the discharger (27) corresponding to the through slot from top to bottom.

8. A zinc sulfate evaporation crystallization drying equipment according to claim 7, characterized in that: The bottom of the discharger (27) is arranged to be inclined from top to bottom and from back to front.

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