Circulating salt leaching device for resource utilization of chemical waste salt

Abstract

The utility model relates to a circulating salt leaching device for chemical waste salt resource utilization, which comprises a three-dimensional salt leaching tank, a stirring mechanism and an ultrasonic generator, and is technically characterized in that the three-dimensional salt leaching tank is sequentially provided with a plurality of salt leaching tanks from top to bottom, and the stirring mechanism comprises a stirring motor, a stirring vertical shaft and a stirring paddle; the number of the stirring paddles is equal to that of the salt leaching tanks, the stirring paddles and the salt leaching tanks are in one-to-one correspondence, the stirring paddles are located in the corresponding salt leaching tanks, the stirring vertical shaft is composed of an upper solid section, a lower solid section and a hollow section connected between the upper solid section and the lower solid section, and the hollow section is provided with a plurality of discharging through openings flush with the bottoms of the salt leaching tanks. A salt leaching liquid spraying assembly is arranged on the top surface of each salt leaching tank, and an ultrasonic transducer connected with the output end of the ultrasonic generator is arranged on the side wall of the three-dimensional salt leaching tank. According to the device, the salt leaching efficiency is remarkably improved, the excessive loss of salt particles is avoided, and the recovery amount is increased.

Description

Technical Field

[0001] This utility model relates to the field of chemical waste salt resource utilization technology, specifically to a circulating salt washing device for chemical waste salt resource utilization. Background Technology

[0002] The traditional method for treating chemical waste salt is landfill disposal. However, due to its complex composition and the difficulty in removing organic matter, landfill disposal causes pollution and wastes resources. Therefore, the resource utilization of chemical waste salt is essential and an inevitable trend in modern industry. Currently, salt washing is a method used to treat organic matter in waste salt. The washing solution removes organic matter and other impurities from industrial waste salt, transferring the organic phase from the solid phase to the liquid phase, thereby achieving the purpose of purifying the waste salt.

[0003] For example, CN 214528168 U discloses an ultrasonic salt washing system for cleaning industrial impurities, which includes a salt storage tank, a belt conveyor, an ultrasonic salt washing device, a centrifuge, a reaction tank, a filter press, a clear liquid tank, and a refrigeration device. The belt conveyor is located on one side of the salt storage tank, and the ultrasonic salt washing device is located on the other side of the belt conveyor. The ultrasonic salt washing device includes a shell, an ultrasonic generator, and a stirrer. This system utilizes an ultrasonic salt washing device for salt washing. Specifically, when waste salt particles enter the ultrasonic salt washing device, the stirrer is activated and kept running continuously. Simultaneously, the ultrasonic generator converts electrical energy into acoustic signals of a specific frequency, which are transmitted to the ultrasonic transducer. The transducer generates ultrasonic waves of a specific frequency that act on the surface of the salt to be washed. The stirrer's paddles ensure uniform mixing of the waste salt particles and the chemical solution within the shell, allowing the chemical to react with impurities in the salt. The ultrasonic waves accelerate this process. Through the combined action of the ultrasonic waves, the stirrer, and the chemical, the liquid phase containing the washed salt particles is discharged from the bottom of the shell and sent to a centrifuge to separate the washed salt particles and the liquid phase, thus achieving salt washing. However, the following problems still exist: a large amount of waste salt particles are fed into the shell, causing them to accumulate, which hinders rapid washing, prolongs the washing time, and can easily lead to excessive dissolution of the salt surface, making recycling difficult. Utility Model Content

[0004] The purpose of this invention is to provide a circulating salt washing device for the resource utilization of chemical waste salt that has a reasonable structure and reliable operation, which solves the above problems, significantly improves the salt washing efficiency, avoids excessive salt particle loss, and increases the recovery volume.

[0005] The technical solution of this utility model is:

[0006] A circulating salt washing device for the resource utilization of chemical waste salt includes a three-dimensional salt washing tank, a stirring mechanism, and an ultrasonic generator. Its key technical features are: the three-dimensional salt washing tank has multiple washing tanks arranged sequentially from top to bottom; the stirring mechanism includes a stirring motor fixed to the center of the top of the three-dimensional salt washing tank, a stirring shaft located inside the three-dimensional salt washing tank and connected to the stirring motor, and multiple stirring blades mounted on the stirring shaft. The number of stirring blades is equal to the number of washing tanks and corresponds one-to-one. Each stirring blade is located in its corresponding washing tank. The stirring shaft consists of an upper solid section and a lower solid section located at the top. The system comprises a hollow section connecting the upper and lower solid sections. The hollow section has multiple discharge ports flush with the bottom of each salt washing tank. The upper end of the lower solid section is connected to the lowest discharge port. A discharge valve is built into the hollow section below the corresponding discharge ports. The lower end of the upper solid section is connected to the highest discharge port. A blocking valve is built into the hollow section above the corresponding discharge ports. Salt washing liquid spraying components are arranged on the top surface of each salt washing tank. An ultrasonic transducer connected to the output end of an ultrasonic generator is installed on the side wall of the three-dimensional salt washing tank.

[0007] The above-mentioned circulating salt washing device for the resource utilization of chemical waste salt has a bearing seat at the bottom center of the three-dimensional salt washing tank that matches the lower solid section of the stirring vertical shaft, and a discharge main pipe at the lower end of the lowest salt washing tank.

[0008] The aforementioned circulating salt washing device for the resource utilization of chemical waste salt has a salt washing liquid discharge pipeline on the upper side wall of each of the salt washing tanks. The outer ends of each salt washing liquid discharge pipeline are connected by a manifold, and each salt washing liquid discharge pipeline is equipped with a control valve.

[0009] The above-mentioned circulating salt washing device for the resource utilization of chemical waste salt has a conical bottom surface in each of the salt washing tanks, and the lower end of the conical surface is a discharge port. A bushing that is in contact with the outer wall of the stirring vertical shaft is provided at the discharge port.

[0010] The aforementioned circulating salt washing device for the resource utilization of chemical waste salt has a feeding port on the top surface of the three-dimensional salt washing tank that communicates with the uppermost salt washing tank.

[0011] The beneficial effects of this utility model are:

[0012] In operation, a small amount of pre-set waste salt particles is first fed into the uppermost washing tank. In this tank, the particles undergo a combined process of stirring, spraying, and ultrasonic waves for the first washing operation. After this initial washing, a portion of the washing solution is drawn out, while the remainder is transferred to a second washing tank for a second, cyclical washing. Then, new waste salt particles are added to the uppermost tank for the first washing, and this process is repeated. In the second tank, a portion of the washing solution is drawn out, while the remainder is transferred to a third washing tank for a third, cyclical washing. Finally, the uppermost tank is unloaded back into the second washing tank. This continuous cycle of washing through various tanks ensures thorough cleaning of the waste salt particles. Compared to existing technologies, this method of segmenting and layering large quantities of waste salt particles into different washing tanks prevents their accumulation. The dispersed washing facilitates uniform spraying and cleaning, resulting in faster cleaning, significantly reduced washing time, and reduced surface dissolution of the salt particles, thus increasing the recovery rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 Enlarged view of section A in the middle;

[0015] Figure 3 yes Figure 1 Enlarged view of section B;

[0016] Figure 4 yes Figure 1 Enlarged view of section C.

[0017] In the diagram: 1. Feeding port, 2. Three-dimensional salt washing tank, 3. Stirring motor, 4. Upper solid section, 5. Stirring paddle, 6. Lower solid section, 7. Control valve, 8. Salt solution discharge pipeline, 9. Salt washing tank, 10. Material blocking valve, 11. Discharge valve, 12. Manifold, 13. Discharge main pipe, 14. Bearing seat, 15. Ultrasonic transducer, 16. Salt solution spray assembly, 17. Bushing, 18. Discharge port, 19. Hollow section. Detailed Implementation

[0018] The present invention will be described in detail with reference to the accompanying drawings.

[0019] like Figures 1-4 As shown, the circulating salt washing device for the resource utilization of chemical waste salt includes a three-dimensional salt washing tank 2, a stirring mechanism and an ultrasonic generator.

[0020] The three-dimensional salt washing tank 2 is provided with multiple salt washing tanks 9 arranged sequentially from top to bottom. The stirring mechanism includes a stirring motor 3 fixed at the top center of the three-dimensional salt washing tank 2, a stirring shaft located inside the three-dimensional salt washing tank 2 and connected to the stirring motor 3, and multiple stirring paddles 5 disposed on the stirring shaft. The number of stirring paddles 5 is equal to the number of salt washing tanks 9 and corresponds one-to-one, with each stirring paddle 5 located in its corresponding salt washing tank 9. The stirring shaft consists of an upper solid section 4, a lower solid section 6, and a hollow section 19 connecting the upper and lower solid sections. The hollow section 19 is provided with multiple discharge ports 18 that are flush with the bottom of each salt washing tank 9. The upper end of the lower solid section 6 is connected to the lowermost discharge port 18. The hollow section 19 has a built-in discharge valve 11 at the lower position corresponding to the other discharge ports 18. The lower end of the upper solid section 4 is connected to the uppermost discharge port 18. The hollow section 19 has a built-in blocking valve 10 at the upper position corresponding to the other discharge ports 18.

[0021] In this embodiment, the bottom surface of each of the salt washing tanks 9 is a conical surface, and the lower end of the conical surface is a discharge port. A bushing 17 that is in contact with the outer wall of the stirring vertical shaft is provided at the discharge port. The bottom center of the three-dimensional salt washing tank 2 is provided with a bearing seat 14 that mates with the lower solid section 6 of the stirring vertical shaft, and the lower end of the lowest salt washing tank 9 is provided with a discharge manifold 13.

[0022] Each of the salt washing tanks 9 has a salt washing liquid spraying assembly 16 arranged on its top surface. The side wall of the three-dimensional salt washing tank 2 is equipped with an ultrasonic transducer 15 connected to the output end of an ultrasonic generator. Each of the salt washing tanks 9 has a salt washing liquid discharge pipe 8 on its upper side wall, the outer ends of which are connected by a manifold 12. Each salt washing liquid discharge pipe 8 is equipped with a control valve 7. The top surface of the three-dimensional salt washing tank 2 has a feeding port 1 that communicates with the uppermost salt washing tank 9.

[0023] Working principle:

[0024] In operation, a small amount of pre-set waste salt particles is first added to the uppermost washing tank 9. Within this tank, the combined effects of stirring, spraying, and ultrasonic waves achieve the initial washing process. After this first washing operation, a portion of the washing solution is discharged through the corresponding discharge pipe 8. The uppermost unloading valve 11 and the blocking valve 10 are then opened, and the remaining portion is discharged into the second washing tank 9 for a second, cyclical washing process. Afterward, the uppermost unloading valve 11 and the blocking valve 10 are closed. New waste salt particles are then added to the uppermost washing tank 9 for the final washing.

[0025] The salt solution mixture in the second washing tank 9 is replenished by spraying, and a second washing process is carried out under the synergistic effect of stirring and ultrasound. Then, a portion of the washing solution is drawn out, and the remainder is discharged into the third washing tank 9 for a third washing process. The material from the top washing tank 9 is then discharged into the second washing tank 9 for a second washing process.

[0026] Similarly, after being circulated and cleaned in each of the washing tanks 9, the waste salt particles are discharged through the unloading manifold 13 and directed to the centrifuge for dehydration.

[0027] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this patent.

Claims

1. A circulating salt washing device for the resource utilization of chemical waste salt, comprising a three-dimensional salt washing tank, a stirring mechanism, and an ultrasonic generator, characterized in that: The three-dimensional salt washing tank is provided with multiple salt washing tanks arranged sequentially from top to bottom. The stirring mechanism includes a stirring motor fixed at the top center of the three-dimensional salt washing tank, a stirring shaft located inside the three-dimensional salt washing tank and connected to the stirring motor, and multiple stirring paddles disposed on the stirring shaft. The number of stirring paddles is equal to the number of salt washing tanks and corresponds one-to-one. The stirring paddles are located in the corresponding salt washing tanks. The stirring shaft is composed of an upper solid section, a lower solid section, and a hollow section connecting the upper and lower solid sections. The upper part is provided with multiple discharge ports that are flush with the bottom of each salt washing tank. The upper end of the lower solid section is connected to the lowermost discharge port. The hollow section has a built-in discharge valve at the lower position corresponding to the other discharge ports. The lower end of the upper solid section is connected to the uppermost discharge port. The hollow section has a built-in blocking valve at the upper position corresponding to the other discharge ports. Each of the salt washing tanks is provided with a salt washing liquid spraying assembly on its top surface. The side wall of the three-dimensional salt washing tank is provided with an ultrasonic transducer connected to the output end of an ultrasonic generator. The bottom center of the three-dimensional salt washing tank is provided with a bearing seat that mates with the lower solid section of the stirring vertical shaft, and the lowest end of the salt washing tank is provided with a discharge main pipe. Each of the aforementioned salt washing tanks has a salt washing liquid discharge pipe on the upper side wall. The outer ends of each salt washing liquid discharge pipe are connected by a manifold. Each salt washing liquid discharge pipe is equipped with a control valve.

2. The circulating salt washing device for the resource utilization of chemical waste salt according to claim 1, characterized in that: The bottom surface of each of the salt washing tanks is a conical surface, and the lower end of the conical surface is a discharge port. A bushing that is in contact with the outer wall of the stirring vertical shaft is provided at the discharge port.

3. The circulating salt washing device for the resource utilization of chemical waste salt according to claim 1, characterized in that: The top surface of the three-dimensional salt washing tank is provided with a feeding port that communicates with the uppermost salt washing trough.

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