A crystallization device for co-production of magnesium sulfate fertilizer

Abstract

The utility model relates to crystallization device technical field discloses a kind of crystallization devices of cogeneration magnesium sulfate fertilizer preparation, including tank body, the stirring mechanism of being set in tank body and the heating assembly of being set in tank body outer end, tank body top side is embedded with the liquid inlet pipe with valve, tank body bottom side is embedded with the liquid outlet pipe with valve, fixed ring is fixedly connected with the lower end of liquid outlet pipe outer wall, the lower end of fixed ring outer wall is fixedly connected with limit ring, permanent magnet is embedded in the middle part of fixed ring outer ring wall, protective shell is sleeved with the outer end of permanent magnet, threaded ring is screw-connected with the lower end of limit ring in fixed ring outer ring, the inner side wall of threaded ring is fixedly connected with the branch of several L type settings, the upper end of branch outer wall is fixedly connected with the mounting ring of several, mounting ring outer wall is fixedly connected with filter screen, the utility model is improved product purity and subsequent processing by optimization, permanent magnet adsorbs metal impurities and makes it adhere on conical filter screen, improves product purity.

Description

Technical Field

[0001] This utility model relates to the field of crystallization equipment technology, specifically to a crystallization equipment for the co-production of magnesium sulfate fertilizer. Background Technology

[0002] Co-produced magnesium sulfate fertilizer refers to the process of simultaneously producing magnesium sulfate products that meet agricultural fertilizer standards in industrial production (such as chemical, metallurgical, pharmaceutical, and seawater desalination) using byproducts containing magnesium and sulfur elements (such as waste acid, mother liquor, and waste residue leachate) generated during the production of the main product as raw materials, through resource utilization technologies (such as neutralization, purification, and separation), without consuming large amounts of original resources.

[0003] In the traditional process of producing magnesium sulfate fertilizer, the raw materials are mostly by-products from the chemical and metallurgical industries (such as waste acid and mother liquor). The iron, manganese and other metal impurities contained in these raw materials are easily retained in the liquid before crystallization. When the liquid is discharged, a large amount of metal impurities flow out with the crystal mixture. The impurity residue not only reduces the purity of magnesium sulfate fertilizer, but also affects the application effect. Utility Model Content

[0004] The purpose of this invention is to provide a crystallization apparatus for the co-production of magnesium sulfate fertilizer, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crystallization device for co-producing magnesium sulfate fertilizer, comprising a tank, a stirring mechanism disposed inside the tank, and a heating assembly sleeved on the outer end of the tank. A liquid inlet pipe with a valve is embedded on one side of the top of the tank, and a liquid outlet pipe with a valve is embedded on one side of the bottom of the tank. A fixing ring is fixedly connected to the lower end of the outer wall of the liquid outlet pipe. A limiting ring is fixedly connected to the lower end of the outer wall of the fixing ring. A permanent magnet is embedded in the middle of the outer ring wall of the fixing ring. A protective shell is sleeved on the outer end of the permanent magnet. A threaded ring is threadedly connected to the lower end of the fixing ring below the limiting ring. Several L-shaped support rods are fixedly connected to the inner side wall of the threaded ring. Several mounting rings are fixedly connected to the upper end of the outer wall of the support rods. A filter screen is fixedly connected to the outer wall of each mounting ring.

[0006] Preferably, the stirring mechanism includes a drive motor, a drive shaft, and a stirring rod.

[0007] Preferably, the bottom of each tank is fixedly connected with several support legs.

[0008] Preferably, the mounting rings and filter screen sections are all arranged in a conical shape.

[0009] Compared with the prior art, the beneficial effects of this utility model are: optimizing product purity and subsequent processing; the permanent magnet adsorbs metal impurities and attaches them to the conical filter screen, thereby improving product purity; the threaded ring design facilitates disassembly and cleaning of the filter screen, reducing maintenance difficulty, and combining practicality and convenience, thus meeting the needs of co-producing magnesium sulfate fertilizer. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the threaded ring structure of this utility model.

[0011] In the diagram: 1. Tank body; 11. Inlet pipe; 12. Support leg; 13. Outlet pipe; 14. Fixing ring; 15. Limiting ring; 16. Permanent magnet; 160. Protective shell; 17. Threaded ring; 18. Support rod; 180. Mounting ring; 19. Filter screen; 2. Stirring mechanism; 3. Heating assembly. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figures 1-4 As shown, this utility model provides the following technical solution: Example 1: A crystallization device for co-producing magnesium sulfate fertilizer includes a tank 1, a stirring mechanism 2 installed inside the tank 1, and a heating component 3 sleeved on the outer end of the tank 1. A liquid inlet pipe 11 with a valve is embedded on one side of the top of the tank 1, and a liquid outlet pipe 13 with a valve is embedded on one side of the bottom of the tank 1. The stirring mechanism 2 includes a drive motor, a drive shaft, and a stirring rod. Several support legs 12 are fixedly connected to the bottom of the tank 1. The heating component 3 includes a heating jacket and a temperature controller.

[0014] When using, first open the valve on the inlet pipe 11, and slowly inject the raw liquid of the co-produced magnesium sulfate fertilizer to be crystallized into the tank 1 through the inlet pipe 11. After the injection is completed, close the valve on the inlet pipe 11.

[0015] Start the heating component 3 to heat the tank 1 through the heating jacket. At the same time, operate the temperature controller to set a suitable heating temperature. This temperature needs to be determined according to the crystallization characteristics of the co-produced magnesium sulfate fertilizer to ensure that the raw solution can successfully reach the crystallization conditions. During the heating process, observe the temperature displayed by the temperature controller in real time to ensure that the temperature is stable within the set range.

[0016] Start the drive motor of the stirring mechanism 2. The drive motor drives the drive shaft to rotate, and the drive shaft further drives the stirring rod to rotate inside the tank 1, so as to uniformly stir the raw liquid in the tank 1, so that the raw liquid is heated evenly and avoids local excessively high or low temperature from affecting the crystallization effect. The stirring speed can be adjusted according to the actual situation.

[0017] Under the combined action of stirring and heating, the original solution in tank 1 gradually reaches the crystallization conditions and begins to precipitate magnesium sulfate crystals. Stirring is continued for a period of time to ensure sufficient crystallization.

[0018] After crystallization is complete, first turn off the heating component 3 and the stirring mechanism 2. After the temperature of the crystallization mixture in the tank 1 drops appropriately, open the valve on the liquid outlet pipe 13 to allow the mixture containing magnesium sulfate crystals to be discharged through the liquid outlet pipe 13, thus completing one crystallization operation. After the discharge is completed, close the valve on the liquid outlet pipe 13. If it is necessary to continue using it in the future, the above steps can be repeated.

[0019] Example 2: The technical solution of this example, which differs from that of Example 1, includes: a fixing ring 14 is fixedly connected to the lower end of the outer wall of the outlet pipe 13; a limiting ring 15 is fixedly connected to the lower end of the outer wall of the fixing ring 14; a permanent magnet 16 is embedded in the middle of the outer ring wall of the fixing ring 14; a protective shell 160 is sleeved on the outer end of the permanent magnet 16; a threaded ring 17 is threadedly connected to the lower end of the limiting ring 15 on the outer ring of the fixing ring 14; several L-shaped support rods 18 are fixedly connected to the inner side wall of the threaded ring 17; several mounting rings 180 are fixedly connected to the upper end of the outer wall of the support rods 18; a filter screen 19 is fixedly connected to the outer wall of the mounting rings 180; the cross-sections of the mounting rings 180 and the filter screen 19 are all conical; the conical filter screen 19 can have more space to adsorb iron ions.

[0020] When using, first open the inlet valve 11 and inject the raw liquid to be crystallized into tank 1. After filling, close the valve.

[0021] Then start the heating component 3, set the appropriate temperature through the temperature controller to heat the tank 1, and at the same time start the stirring mechanism 2 to drive the stirring rod to stir the raw liquid evenly, so as to ensure that the raw liquid is heated evenly and promote crystal formation.

[0022] After crystallization is complete, turn off the heating component 3 and the stirring mechanism 2. After the temperature of the mixture drops slightly, open the valve of the liquid outlet pipe 13. At this time, the mixture containing magnesium sulfate crystals will flow downward along the liquid outlet pipe 13.

[0023] When the mixture flows through the lower end of the outlet pipe 13, it will first come into contact with the conical filter screen 19 supported by the mounting ring 180. During this process, the permanent magnet 16 on the fixing ring 14 can adsorb some of the metal impurities in the mixture onto the filter screen 19, further improving the purity of the product. The protective shell 160 can prevent the permanent magnet 16 from being corroded or damaged by the mixture, and the limiting ring 15 plays a limiting role on the threaded ring 17 to ensure its stable installation position.

[0024] After filtration is complete, if the filter screen 19 needs to be cleaned, the threaded ring 17 can be rotated to separate it from the fixed ring 14, thereby removing the support rod 18, the mounting ring 180 and the filter screen 19 together. After cleaning, it can be put back into place for continued use.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crystallization device for co-producing magnesium sulfate fertilizer, comprising a tank (1), a stirring mechanism (2) disposed inside the tank (1), and a heating assembly (3) sleeved on the outer end of the tank (1), wherein a liquid inlet pipe (11) with a valve is embedded on one side of the top of the tank (1), and a liquid outlet pipe (13) with a valve is embedded on one side of the bottom of the tank (1). Its features are: A fixing ring (14) is fixedly connected to the lower end of the outer wall of the outlet pipe (13). A limiting ring (15) is fixedly connected to the lower end of the outer wall of the fixing ring (14). A permanent magnet (16) is embedded in the middle of the outer ring wall of the fixing ring (14). A protective shell (160) is sleeved on the outer end of the permanent magnet (16). A threaded ring (17) is threadedly connected to the lower end of the limiting ring (15) of the outer ring of the fixing ring (14). Several L-shaped support rods (18) are fixedly connected to the inner side wall of the threaded ring (17). Several mounting rings (180) are fixedly connected to the upper end of the outer wall of the support rods (18). A filter screen (19) is fixedly connected to the outer wall of the mounting rings (180).

2. The crystallization apparatus for co-producing magnesium sulfate fertilizer according to claim 1, characterized in that: The stirring mechanism (2) includes a drive motor, a drive shaft, and a stirring rod.

3. The crystallization apparatus for co-producing magnesium sulfate fertilizer according to claim 1, characterized in that: The bottom of the tank (1) is fixedly connected to several support legs (12).

4. The crystallization apparatus for co-producing magnesium sulfate fertilizer according to claim 1, characterized in that: Several of the mounting rings (180) and the filter screen (19) are arranged in a conical shape.

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