A composite agent production device suitable for a mother liquor evaporation solidification process

Abstract

The utility model relates to the production field of composite reagent, specifically relates to a kind of composite reagent production equipment suitable for evaporation mother liquor solidification process, including mixing tank, the bottom of mixing tank is fixedly connected with the blanking pipe, blanking pipe body is fixed with blanking valve, mixing tank top side is equipped with cement adding mouth, cement adding mouth top cover is equipped with cover plate, mixing tank top other side is fixedly connected with chelating agent adding pipe, chelating agent adding pipe body is fixed with first feeding valve, stirring subassembly is fixed in the mixing tank, the beneficial effects of the utility model are: while having the functions of mixing chelating agent, soda lime and cement, the prepared composite reagent can also be effectively prevented from adhering to the inner surface of mixing tank, and the phenomenon of blockage during soda lime feeding and the phenomenon of blockage during the discharge of prepared composite reagent can also be effectively prevented, with rich functions, better practicability, and suitable for popularization and use.

Description

Technical Field

[0001] This utility model relates to the field of composite agent production, specifically to a composite agent production equipment suitable for the solidification process of evaporation mother liquor. Background Technology

[0002] Currently, common methods for treating evaporation mother liquor in China include adsorption, electrolysis, chemical precipitation, ion exchange, catalytic reduction, and solidification. Adsorption methods use adsorbents with limited adsorption capacity, resulting in high regeneration costs and performance degradation after regeneration. Electrolysis and ion exchange methods suffer from high costs and small processing capacities. Solidification processes mix the mother liquor with a solidifying agent (such as cement, fly ash, or chelating agents) to form an insoluble solid, reducing pollutant migration. This is particularly suitable for applications requiring small-scale operations, short construction periods, and rapid emergency response. However, current mainstream methods of curing with soda lime and cement require long curing times for the mother liquor and large amounts of curing agent. These methods struggle to achieve the desired results for mother liquors with high water and organic matter content. For example, with soda lime curing, when the amount of soda lime exceeds a certain proportion, a large amount of ammonia odor is produced during the curing process. Reducing the amount of soda lime will not achieve the desired effect, which is detrimental to both health and the environment. The evaporation mother liquor curing process is a crucial step in the harmless and stable treatment of high-concentration waste liquid generated by evaporation technology. Evaporation mother liquor has a complex composition, containing large amounts of inorganic salts (such as NaCl and CaCl2) and recalcitrant organic matter (such as surfactants and phenols). Both interfere with the hydration reaction of the curing agent, resulting in a loose structure in the cured body and high curing difficulty. How to treat it harmlessly has become an urgent environmental problem.

[0003] Existing production equipment for preparing composite agents suitable for evaporation mother liquor solidification processes has some problems that cannot be ignored in actual use. First, blockages occur when feeding the required raw materials, such as powdered soda lime. Second, blockages occur when discharging the prepared composite agent. Moreover, the composite agent may also adhere to the inner surface of the equipment during the preparation process, which requires further improvement.

[0004] Therefore, it is necessary to invent a composite agent production equipment suitable for the solidification process of evaporation mother liquor. Utility Model Content

[0005] Therefore, this utility model provides a composite agent production equipment suitable for the solidification process of evaporation mother liquor, in order to solve the problem of blockage that occurs when the prepared composite agent is fed out, as mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite agent production equipment suitable for the solidification process of evaporation mother liquor, comprising a mixing tank, a feeding pipe fixedly connected to the bottom of the mixing tank, a feeding valve fixedly attached to the body of the feeding pipe, a cement adding port opened on one side of the top of the mixing tank, a cover plate covering the top of the cement adding port, a chelating agent adding pipe fixedly connected to the other side of the top of the mixing tank, a first feeding valve fixedly attached to the body of the chelating agent adding pipe, a stirring assembly fixedly attached inside the mixing tank, a scraping assembly and a feeding anti-blocking assembly fixedly attached to the stirring assembly, a soda lime feeding assembly fixedly connected to the top of the mixing tank, a first feeding anti-blocking assembly fixedly attached to the soda lime feeding assembly, and a second feeding anti-blocking assembly fixedly attached to one side of the soda lime feeding assembly.

[0007] Preferably, the stirring assembly includes a speed reducer, the bottom of which is fixed at the center of the top of the mixing tank, a servo motor is vertically fixed at the top of the speed reducer, the output shaft of the servo motor is fixedly connected to the input shaft of the speed reducer, the bottom end of the output shaft of the speed reducer extends to the inside of the mixing tank, and a stirring paddle is fixed at the bottom end of the output shaft of the speed reducer.

[0008] Preferably, the scraping assembly includes a connecting plate, which is symmetrically fixed to both ends of the stirring paddle. Each connecting plate has a rubber scraper fixed to its surface, and the surfaces of the rubber scrapers abut against the inner surface of the mixing tank.

[0009] Preferably, the feeding anti-clogging component includes a vertically arranged feeding screw, the top end of which is fixed to the bottom end of the stirring paddle, and the bottom end of which extends into the feeding pipe.

[0010] Preferably, the soda lime feeding assembly includes a feeding hopper, a feeding pipe is fixedly connected to the bottom of the feeding hopper, a second feeding valve is fixedly connected to the body of the feeding pipe, and a feeding trough is fixedly connected to the top of the side of the feeding hopper.

[0011] Preferably, the first feeding anti-clogging component includes a vertically arranged first electric push rod, the bottom of which is fixed at the center of the top of the feeding hopper.

[0012] Preferably, the output shaft of the first electric push rod extends into the feeding hopper, and a clearing guide rod is vertically fixed at the bottom end of the output shaft of the first electric push rod, the bottom end of the clearing guide rod extending into the feeding pipe.

[0013] Preferably, the second feeding anti-clogging component includes a vertically arranged end plate, the bottom of which is fixed to the top of the mixing tank, and a second electric push rod is horizontally fixed to the top of the end plate. A rubber hammer is fixed to the output shaft of the second electric push rod, and the rubber hammer can abut against the surface of the feeding pipe.

[0014] The beneficial effects of this utility model are as follows: by using the mixing tank, feeding pipe, feeding valve, stirring assembly, scraping assembly, feeding anti-blocking assembly, soda lime feeding assembly, first feeding anti-blocking assembly and second feeding anti-blocking assembly in combination, it can effectively prevent the prepared composite agent from adhering to the inner surface of the mixing tank while having the function of mixing chelating agent, soda lime and cement. It can also effectively prevent blockage when feeding soda lime and when discharging the prepared composite agent. It has rich functions, good practicality and is suitable for widespread use. Attached Figure Description

[0015] Figure 1 A structural cross-sectional view provided for this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of the structure at point A in the image;

[0017] Figure 3 for Figure 1 Enlarged view of the structure at point B in the image;

[0018] Figure 4 The main structural view provided for this utility model.

[0019] In the diagram: 1. Mixing tank; 2. Feed pipe; 3. Feed valve; 4. Cement addition port; 5. Cover plate; 6. Chelating agent addition pipe; 7. First feeding valve; 8. Reducer; 9. Servo motor; 10. Agitator; 11. Connecting plate; 12. Rubber scraper; 13. Feeding screw; 14. Feeding hopper; 15. Feed pipe; 16. Second feeding valve; 17. Feed chute; 18. First electric push rod; 19. Unblocking guide rod; 20. End plate; 21. Second electric push rod; 22. Rubber hammer. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Please refer to the appendix. Figures 1-4This utility model provides a composite agent production equipment suitable for the solidification process of evaporation mother liquor, including a mixing tank 1. A feeding pipe 2 is fixedly connected to the bottom of the mixing tank 1, and a feeding valve 3 is fixedly installed on the body of the feeding pipe 2 to control the feeding of the prepared composite agent. A cement adding port 4 is opened on one side of the top of the mixing tank 1, and a cover plate 5 is installed on the top of the cement adding port 4 for adding cement raw materials required for preparing the composite agent into the mixing tank 1. A chelating agent adding pipe 6 is fixedly connected to the other side of the top of the mixing tank 1, and a first feeding valve 7 is fixedly installed on the body of the chelating agent adding pipe 6 for adding chelating agent raw materials required for preparing the composite agent into the mixing tank 1. A stirring assembly is fixedly installed inside the mixing tank 1, and a scraping assembly and a feeding anti-blocking assembly are fixedly installed on the stirring assembly. A quicklime feeding assembly is fixedly connected to the top of the mixing tank 1, and a first feeding anti-blocking assembly is fixedly installed on the quicklime feeding assembly. A second feeding anti-blocking assembly is fixedly installed on one side of the quicklime feeding assembly. It should be noted that the composite agent is preferably set to 70% chelating agent. The composition comprises 5% quicklime and 25% cement by weight, with the chelating agent being modified bentonite or a mixture of modified bentonite and polyferric chloride. The cement can be one or more of silicate cement, pozzolanic silicate cement, composite silicate cement, or fly ash silicate cement, replacing traditional materials such as cement. This method can achieve the harmlessness of the evaporation mother liquor without increasing its volume, thereby improving the overall effectiveness and economy of the evaporation mother liquor treatment system. At the same time, by improving the structure and performance of the chelating agent, the chemical chelation effect between it and the hazardous components in the evaporation mother liquor is strengthened, thereby improving the long-term stability of the stabilized products and reducing the environmental impact of the stabilized products during the final disposal process. By mixing the chelating agent with quicklime and cement, the adsorption, co-precipitation and other physicochemical reactions of the chelating components, the anti-permeability and anti-leaching properties of cement, and the hydroxide precipitation produced between quicklime and heavy metals are combined, weakening the activity of heavy metals from multiple angles, significantly improving the curing efficiency, and making up for the shortcomings of single curing agents in practical applications.

[0022] The mixing assembly includes a speed reducer 8, which is a transmission device for low speed and high torque. The speed reducer reduces the power of the high-speed motor by meshing a small gear on the input shaft with a large gear on the output shaft. The bottom of the speed reducer 8 is fixed at the center of the top of the mixing tank 1. A servo motor 9 is vertically fixed on the top of the speed reducer 8. The output shaft of the servo motor 9 is fixedly connected to the input shaft of the speed reducer 8. The bottom end of the output shaft of the speed reducer 8 extends to the inside of the mixing tank 1, and a stirring paddle 10 is fixed at the bottom end of the output shaft of the speed reducer 8. Specifically, under the speed reduction action of the speed reducer 8, when the servo motor 9 is running, it can drive the stirring paddle 10 to rotate slowly in the mixing tank 1, thereby stirring and mixing the soda lime, chelating agent and cement required for the preparation of the composite agent added to the mixing tank 1, thus realizing the function of preparing the composite agent.

[0023] The scraping assembly includes a connecting plate 11, which is symmetrically fixed on both sides of the stirring paddle 10. Rubber scrapers 12 are fixed on the surface of the connecting plate 11, and the surfaces of the rubber scrapers 12 are in contact with the inner surface of the mixing tank 1. Specifically, when the servo motor 9 drives the stirring paddle 10 to rotate slowly, the connecting plate 11 can drive the rubber scrapers 12 to rotate slowly and synchronously, so that the rubber scrapers 12 can continuously scrape the inner surface of the mixing tank 1, thereby effectively preventing the prepared composite agent from adhering to the inner surface of the mixing tank 1.

[0024] The anti-clogging component for discharging includes a vertically arranged conveying screw 13. The top end of the conveying screw 13 is fixed to the bottom end of the stirring paddle 10, and the bottom end of the conveying screw 13 extends into the discharging pipe 2. Specifically, when the servo motor 9 drives the stirring paddle 10 to rotate slowly, it can also drive the conveying screw 13 to rotate synchronously. Therefore, when the prepared compound agent needs to be discharged, the operator can open the discharging valve 3 to allow the prepared compound agent to be discharged through the discharging pipe 2. Then, by continuing to run the servo motor 9, the conveying screw 13 can be rotated, thereby conveying the compound agent discharged through the discharging pipe 2 downwards, which can effectively prevent the phenomenon of clogging when the prepared compound agent is discharged.

[0025] The quicklime feeding assembly includes a feeding hopper 14, a feeding pipe 15 fixedly connected to the bottom of the feeding hopper 14, a second feeding valve 16 fixedly connected to the body of the feeding pipe 15, and a feeding trough 17 fixedly connected to the top of the side of the feeding hopper 14. Specifically, the operator can first add the quicklime material required for preparing the compound agent into the feeding hopper 14 through the feeding trough 17, and then add it into the mixing tank 1 through the feeding pipe 15.

[0026] The first feeding anti-clogging component includes a vertically arranged first electric push rod 18. The bottom of the first electric push rod 18 is fixed at the center of the top of the feeding hopper 14. The output shaft of the first electric push rod 18 extends into the feeding hopper 14, and a clearing guide rod 19 is vertically fixed at the bottom of the output shaft of the first electric push rod 18. The bottom of the clearing guide rod 19 extends into the feeding pipe 15. Specifically, when the first electric push rod 18 is running, it can drive the clearing guide rod 19 to rise and fall, thereby pushing the soda lime in the feeding pipe 15 downward, thus effectively preventing the soda lime from clogging when feeding.

[0027] The second feeding anti-clogging component includes a vertically arranged end plate 20. The bottom of the end plate 20 is fixed to the top of the mixing tank 1, and a second electric push rod 21 is horizontally fixed to the top of the end plate 20. A rubber hammer head 22 is fixed to the output shaft of the second electric push rod 21. The rubber hammer head 22 can abut against the surface of the feeding pipe 15. Specifically, when the second electric push rod 21 is running, it can drive the rubber hammer head 22 to move back and forth in a straight line, thereby intermittently knocking and vibrating the feeding pipe 15, which can effectively prevent clogging when feeding soda lime.

[0028] It should be noted that the device is electrically connected to an external controller and 220V AC mains power. The controller can be an existing technology device such as a computer. In this utility model, the precise control principle of the first electric push rod 18 and the second electric push rod 21 is to achieve motion conversion through the mechanical cooperation of the servo motor and the lead screw. The status is monitored in real time with the help of devices such as encoders. Finally, the controller dynamically adjusts the output according to the deviation, thereby achieving precise control of position, speed and force within the millimeter or even micrometer range.

[0029] The usage process of this utility model is as follows: When in use, the operator can add the cement required for preparing the composite agent into the mixing tank 1 through the cement addition port 4, add the required chelating agent into the mixing tank 1 through the chelating agent addition pipe 6, and add the required soda lime material into the feeding hopper 14 through the feeding trough 17, and then add it into the mixing tank 1 through the feeding pipe 15. Then, start the first electric push rod 18 and the second electric push rod 21. When the first electric push rod 18 is running, it can drive the unblocking guide rod 19 to rise and fall, thereby pushing the soda lime in the feeding pipe 15 downward, thus effectively preventing the soda lime from being blocked when feeding. When the second electric push rod 21 is running, it can drive the rubber hammer head 22 to move back and forth in a straight line, thereby intermittently knocking and vibrating the feeding pipe 15, thus again effectively preventing the soda lime from being blocked when feeding.

[0030] Then, the servo motor 9 is started. Under the deceleration action of the reducer 8, when the servo motor 9 runs, it can drive the stirring paddle 10 to rotate slowly in the mixing tank 1. This allows the quicklime, chelating agent, and cement added to the mixing tank 1 to be stirred and mixed, thus realizing the function of preparing the composite agent. When the servo motor 9 drives the stirring paddle 10 to rotate slowly, the connecting plate 11 can drive the rubber scraper 12 to rotate slowly and synchronously. This allows the rubber scraper 12 to continuously scrape the inner surface of the mixing tank 1, thus effectively preventing the prepared composite agent from adhering to the inner surface of the mixing tank 1.

[0031] When the prepared compound agent needs to be discharged, the operator can open the discharge valve 3 to discharge the prepared compound agent through the discharge pipe 2. Then, by continuing to run the servo motor 9, the conveying screw 13 will rotate, thereby conveying the compound agent discharged through the discharge pipe 2 downwards, which can effectively prevent the prepared compound agent from being blocked during discharge.

Claims

1. A composite agent production equipment suitable for the solidification process of evaporation mother liquor, comprising a mixing tank (1), a feeding pipe (2) fixedly connected to the bottom of the mixing tank (1), a feeding valve (3) fixedly attached to the body of the feeding pipe (2), a cement adding port (4) opened on one side of the top of the mixing tank (1), a cover plate (5) covering the top of the cement adding port (4), and a chelating agent adding pipe (6) fixedly connected to the other side of the top of the mixing tank (1), a first feeding valve (7) fixedly attached to the body of the chelating agent adding pipe (6), characterized in that: A stirring assembly is fixed inside the mixing tank (1). A scraping assembly and a feeding anti-blocking assembly are fixed on the stirring assembly. A quicklime feeding assembly is fixedly connected to the top of the mixing tank (1). A first feeding anti-blocking assembly is fixed on the quicklime feeding assembly. A second feeding anti-blocking assembly is fixedly installed on one side of the quicklime feeding assembly. The scraping assembly includes a connecting plate (11), which is symmetrically fixed on both sides of the stirring paddle (10). A rubber scraper (12) is fixed on the surface of the connecting plate (11), and the surface of the rubber scraper (12) abuts against the inner surface of the mixing tank (1). The feeding anti-clogging component includes a vertically arranged feeding screw (13), the top end of which is fixed to the bottom end of the stirring paddle (10), and the bottom end of which extends into the feeding pipe (2); The first feeding anti-clogging component includes a vertically arranged first electric push rod (18), the bottom of which is fixed at the center of the top of the feeding hopper (14), the output shaft of the first electric push rod (18) extends into the feeding hopper (14), and a clearing guide rod (19) is vertically fixed at the bottom of the output shaft of the first electric push rod (18), the bottom of which extends into the feeding pipe (15); The second feeding anti-clogging component includes a vertically arranged end plate (20), the bottom of which is fixed to the top of the mixing tank (1), and a second electric push rod (21) is horizontally fixed to the top of the end plate (20). A rubber hammer (22) is fixed to the output shaft of the second electric push rod (21), and the rubber hammer (22) can abut against the surface of the feeding pipe (15).

2. The composite reagent production equipment suitable for evaporation mother liquor solidification process according to claim 1, characterized in that: The stirring assembly includes a speed reducer (8), the bottom of which is fixed at the center of the top of the mixing tank (1). A servo motor (9) is vertically fixed at the top of the speed reducer (8). The output shaft of the servo motor (9) is fixedly connected to the input shaft of the speed reducer (8). The bottom end of the output shaft of the speed reducer (8) extends to the inside of the mixing tank (1), and a stirring paddle (10) is fixed at the bottom end of the output shaft of the speed reducer (8).

3. The composite reagent production equipment suitable for evaporation mother liquor solidification process according to claim 1, characterized in that: The soda lime feeding assembly includes a feeding hopper (14), the bottom of which is fixedly connected to a feeding pipe (15), the body of which is fixedly connected to a second feeding valve (16), and the top of the side of the feeding hopper (14) is fixedly connected to a feed trough (17).

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