A device for treating zinc sulfate waste residue

Abstract

The utility model discloses a zinc sulfate waste residue treatment device, including reation kettle, stirring motor, agitator, foot, waste residue crushing cylinder, liquid inlet, waste residue outlet and discharge pipe, the waste residue crushing cylinder is installed with a pair of crushing roller inside, and the crushing roller is connected with crushing motor transmission through transmission mechanism, and the bottom of waste residue crushing cylinder is connected with reation kettle through the slide chute of unloading, the inner chamber of reation kettle is installed with the filter screen of conical, and the scraper board that is in conformity with the filter screen is installed on the agitator, and the middle position of filter screen is connected with waste residue outlet, and the filter screen divides the reation kettle into two cavity bodies of upper and lower, the lateral wall of the bottom of reation kettle is installed with the discharge pipe, and the circulating pump is installed on the discharge pipe, the zinc sulfate waste residue is crushed through crushing roller and then is added to reation kettle and reacts with sulfuric acid, the reaction process is stirred through the agitator, the filter screen carries out the filtration of reaction liquid, and the circulating structure that is formed through circulating pump and circulating pipe carries out the circulating reaction, and the reaction efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of zinc sulfate recovery technology, and in particular to a zinc sulfate waste residue treatment device. Background Technology

[0002] The production of zinc sulfate generates a large amount of waste residue (such as leaching residue and purification residue), which contains residual zinc (Zn²⁺), heavy metal ions (Pb²⁺, Cd²⁺), and acidic substances. Direct discharge of this waste residue can easily pollute soil and water bodies. Existing treatment methods mostly employ a "decentralized equipment combination" (such as separate crushers, acid leaching tanks, and filters), which has the following drawbacks: 1. Excessively large particle size of waste residue leads to low acid leaching efficiency (zinc dissolution rate <60% when particle size is too large). 2. Relying on simple stirring to increase the reaction rate is insufficient; the reaction rate needs to be improved.

[0003] To address the aforementioned problems, this utility model provides a zinc sulfate waste residue treatment device to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a zinc sulfate waste residue treatment device.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A zinc sulfate waste residue treatment device includes a reaction vessel, a stirring motor, a stirrer, a base, a waste residue crushing cylinder, a liquid inlet, a waste residue outlet, and a discharge pipe. The base is located at the bottom of the reaction vessel, the stirring motor is installed at the top of the reaction vessel and is drivenly connected to the stirrer inside the reaction vessel, the waste residue outlet is located at the bottom of the reaction vessel, and the discharge pipe is installed on the bottom side wall of the reaction vessel. The waste residue crushing cylinder and the liquid inlet are installed on both sides of the upper end of the reaction vessel. A pair of crushing rollers are installed inside the waste residue crushing cylinder, and the crushing rollers are drivenly connected to the crushing motor through a transmission mechanism. The bottom of the slag crushing cylinder is connected to the reactor via a feeding chute; a conical filter screen is installed inside the reactor, and a scraper plate that fits against the filter screen is installed on the agitator. The middle position of the filter screen is connected to the waste slag outlet. The filter screen divides the reactor into upper and lower chambers. The discharge pipe is installed on the side wall of the bottom section of the reactor. A circulation pump is installed on the discharge pipe. A three-way connector is used to connect the discharge pipe at the rear end of the circulation pump to the upper chamber of the reactor via the circulation pipe. Valve one is installed on the discharge pipe at the rear end of the three-way connector, and valve two is installed on the circulation pipe.

[0006] Furthermore, the transmission mechanism includes a transmission frame, a driving gear, and a driven gear. The driving gear and the driven gear are respectively installed on the shaft ends of the two crushing rollers and inside the transmission frame. The crushing motor is installed on one side of the transmission frame and connected to the gear shaft where the driving gear is located. The driving gear and the driven gear mesh with each other and have the same number of teeth.

[0007] Furthermore, the bottom of the agitator is provided with a feeding shaft that extends into the waste outlet. The size of the feeding shaft is smaller than that of the agitator's stirring shaft, and the feeding shaft is provided with spiral blades.

[0008] Furthermore, a sealing cover plate is bolted to the flange of the waste outlet, and the sealing cover plate is sealed to the waste outlet by a sealing ring.

[0009] Furthermore, one of the waste residue crushing cylinders has crushing protrusions on its circumference, and the other waste residue crushing cylinder has grooves on its circumference corresponding to the positions of the crushing protrusions.

[0010] In summary, this utility model has the following beneficial effects: This utility model crushes zinc sulfate waste residue with a crushing roller and then adds it to the reaction vessel to react with sulfuric acid. The reaction process is stirred by a stirrer, the reaction liquid is filtered by a filter screen, and the reaction is circulated through a circulation structure composed of a circulation pump and circulation pipe, which further improves the reaction efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the crushing mechanism of this utility model; In the diagram, 1. Reactor; 2. Stirring motor; 3. Agitator; 4. Base; 5. Waste residue crushing cylinder; 6. Crushing roller; 7. Transmission mechanism; 8. Crushing motor; 9. Feed chute; 10. Liquid inlet; 11. Waste residue outlet; 12. Sealing cover; 13. Feeding shaft; 14. Spiral blade; 15. Circulation pump; 16. Discharge pipe; 17. Circulation pipe; 18. Valve 1; 19. Valve 2; 20. Filter screen; 21. Scraper; 22. Transmission frame; 23. Drive gear; 24. Driven gear. Detailed Implementation

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

[0013] like Figure 1and Figure 2 As shown, a zinc sulfate waste residue treatment device includes a reaction vessel 1, a stirring motor 2, a stirrer 3, a base 4, a waste residue crushing cylinder 5, a liquid inlet 10, a waste residue outlet 11, and a discharge pipe 16. The base 4 is located at the bottom of the reaction vessel 1. The stirring motor 2 is installed at the top of the reaction vessel 1 and is drivenly connected to the stirrer 3 inside the reaction vessel 1. The waste residue outlet 11 is located at the bottom of the reaction vessel 1, and the discharge pipe 16 is installed on the bottom side wall of the reaction vessel 1. The waste residue crushing cylinder 5 and the liquid inlet 10 are installed on both sides of the upper end of the reaction vessel 1. A pair of crushing rollers 6 are installed inside the waste residue crushing cylinder 5. The crushing rollers 6 are drivenly connected to the crushing motor 8 through a transmission mechanism 7. The bottom of the crushing cylinder 5 is connected to the reactor 1 via the feeding chute 9; a conical filter screen 20 is installed in the inner cavity of the reactor 1, and a scraper plate 21 that fits against the filter screen 20 is installed on the agitator 3. The middle position of the filter screen 20 is connected to the waste outlet 11. The filter screen 20 divides the interior of the reactor 1 into upper and lower cavities. The discharge pipe 16 is installed on the side wall of the bottom body of the reactor 1. A circulation pump 15 is installed on the discharge pipe 16. The discharge pipe 16 at the rear end of the circulation pump 15 is connected to the upper cavity of the reactor 1 via a three-way connector and a circulation pipe 17. A valve 18 is installed on the discharge pipe 16 at the rear end of the three-way connector, and a valve 29 is installed on the circulation pipe 17.

[0014] Furthermore, such as Figure 2 As shown, the transmission mechanism 7 includes a transmission frame 22, a driving gear 23 and a driven gear 24. The driving gear 23 and the driven gear 24 are respectively installed on the shaft ends of the two crushing rollers 6 and inside the transmission frame 22. The crushing motor 8 is installed on one side of the transmission frame 22 and connected to the gear shaft where the driving gear 23 is located. The driving gear 23 and the driven gear 24 mesh with each other and have the same number of teeth.

[0015] Furthermore, the bottom of the agitator 3 is provided with a feeding shaft 13 that extends into the waste slag outlet 11. The size of the feeding shaft 13 is smaller than that of the agitator shaft of the agitator 3. The feeding shaft 13 is provided with a spiral blade 14. When the agitator 3 is rotating normally, the spiral blade 14 can lift the waste slag that has sunk into the waste slag outlet 11. When the agitator 3 is flipped, the solid material can be discharged from the waste slag outlet 11.

[0016] Furthermore, a sealing cover plate 12 is bolted to the flange of the waste outlet 11, and the sealing cover plate 12 is sealed to the waste outlet 11 by a sealing ring.

[0017] Furthermore, one of the waste residue crushing cylinders 5 has crushing protrusions on its circumference, and the other waste residue crushing cylinder 5 has grooves on its circumference corresponding to the positions of the crushing protrusions. Through the matching design of the protrusions and grooves, the crushing effect of zinc sulfate is further improved.

[0018] Working principle: Zinc sulfate waste residue is added from the waste residue crushing cylinder, crushed by the crushing rollers, and then enters the reaction vessel. Sulfuric acid solution is added to the reaction vessel from the inlet. The waste residue and sulfuric acid react during the stirring process in the reaction vessel. The filter screen filters out large particles of unreactable solid impurities. The circulation pump pumps the reaction liquid from the bottom back to the top of the reaction vessel. After the reaction is completed, the reaction liquid is sent to the next process from the discharge pipe, and the waste residue is discharged from the waste residue outlet.

[0019] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A zinc sulfate waste residue treatment device, comprising a reaction vessel (1), a stirring motor (2), a stirrer (3), a base (4), a waste residue crushing cylinder (5), a liquid inlet (10), a waste residue outlet (11), and a discharge pipe (16), wherein the base (4) is located at the bottom of the reaction vessel (1), the stirring motor (2) is installed at the top of the reaction vessel (1), the stirring motor (2) is connected to the stirrer (3) inside the reaction vessel (1), the waste residue outlet (11) is located at the bottom of the reaction vessel (1), and the discharge pipe (16) is installed on the bottom side wall of the reaction vessel (1), characterized in that: The waste residue crushing cylinder (5) and the liquid inlet (10) are installed on both sides of the upper end of the reactor (1). A pair of crushing rollers (6) are installed inside the waste residue crushing cylinder (5). The crushing rollers (6) are connected to the crushing motor (8) through the transmission mechanism (7). The bottom of the waste residue crushing cylinder (5) is connected to the reactor (1) through the feeding slide (9). A conical filter screen (20) is installed in the inner cavity of the reactor (1). A scraper plate (21) that fits against the filter screen (20) is installed on the agitator (3). The middle of the filter screen (20) The position is connected to the waste outlet (11). The filter screen (20) divides the interior of the reactor (1) into upper and lower cavities. The discharge pipe (16) is installed on the side wall of the bottom body of the reactor (1). A circulation pump (15) is installed on the discharge pipe (16). The discharge pipe (16) at the rear end of the circulation pump (15) is connected to the upper cavity of the reactor (1) through a three-way connector and the circulation pipe (17). A valve one (18) is installed on the discharge pipe (16) at the rear end of the three-way connector, and a valve two (19) is installed on the circulation pipe (17).

2. The zinc sulfate waste residue treatment device according to claim 1, characterized in that: The transmission mechanism (7) includes a transmission frame (22), a drive gear (23) and a driven gear (24). The drive gear (23) and the driven gear (24) are respectively installed on the shaft ends of the two crushing rollers (6) and inside the transmission frame (22). The crushing motor (8) is installed on one side of the transmission frame (22) and connected to the gear shaft where the drive gear (23) is located. The drive gear (23) and the driven gear (24) mesh with each other and have the same number of teeth.

3. The zinc sulfate waste residue treatment device according to claim 2, characterized in that: The bottom of the agitator (3) is provided with a feeding shaft (13) that extends into the waste outlet (11). The size of the feeding shaft (13) is smaller than that of the agitator (3) and a spiral blade (14) is provided on the feeding shaft (13).

4. The zinc sulfate waste residue treatment device according to claim 3, characterized in that: A sealing cover plate (12) is bolted to the flange of the waste outlet (11), and the sealing cover plate (12) is sealed to the waste outlet (11) by a sealing ring.

5. The zinc sulfate waste residue treatment device according to claim 1, characterized in that: One of the waste residue crushing cylinders (5) has crushing protrusions on its circumference, and the other waste residue crushing cylinder (5) has grooves on its circumference corresponding to the positions of the crushing protrusions.

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