Multi-stage treatment equipment and process for boric acid compound reaction

Abstract

The invention provides multistage treatment equipment and technology for boric acid compound reaction, and relates to the technical field of boric acid preparation, the multistage treatment equipment comprises a metal ion precipitation kettle and an acid-base blending kettle, the metal ion precipitation kettle is provided with a precipitation mechanism for conveniently removing metal ions from boric acid wastewater, and the acid-base blending kettle is provided with an acid-base blending kettle; the acid-base blending kettle is provided with a blending mechanism for conveniently blending the pH value of the boric acid wastewater, the acid-base blending kettle is provided with a filtering mechanism for conveniently transferring the boric acid waste liquid, the precipitation mechanism comprises a first feeding hole and a first motor, and the blending mechanism comprises a second motor, a second feeding hole and a pH value detector. And the filtering mechanism comprises a first sealing door, an L-shaped fixed rod, a third motor, a filter screen and a movable rod. The device is provided with a third motor, a threaded rod, a movable rod and a cleaning brush which are matched with one another, and solid impurities, flocculates and the like which possibly exist in the acid-base blending kettle and are not completely dissolved are intercepted through a filter screen, so that the substances are prevented from entering the metal ion precipitation kettle.

Description

Technical Field

[0001] The invention belongs to the technical field of boric acid preparation, and more specifically, particularly relates to a multi-stage processing device and process for boric acid compound reaction. Background Art

[0002] In the process of preparing boric acid compounds, waste liquid and waste materials are inevitably generated. For example, when boric acid is prepared by reacting borax and acid, there will be residual acid solution and salt solution generated by the reaction after the reaction. If boric acid is extracted from ore, after the ore is treated by acid leaching, acidic waste liquid containing impure metal ions will be generated. In addition, some mother liquors will be generated during the filtration and crystallization processes. These mother liquors may contain incompletely crystallized boric acid, impurity ions, and substances such as acids or alkalis used to adjust the pH. Therefore, in the production of boric acid compounds, the waste materials of the reactants need to be recycled.

[0003] The Chinese patent publication number is: CN118164642B, a chemical waste liquid treatment equipment, the invention can concentrate the flocs accumulated on the top surface of the first filter screen through the gathering column and the cleaning block, and reduce the situation where a large amount of flocs are spread on the top surface of the first filter screen and cause the first filter screen to be blocked.

[0004] Existing boric acid compounds have the following disadvantages when used for treatment:

[0005] 1. When treating the existing boric acid compound waste liquid, it is necessary to adjust the pH before the next treatment. The existing acid-base adjustment is generally to directly transfer the liquid after a period of temperature and stirring, or to manually collect waste liquid samples to test the pH before transferring the waste liquid and the next treatment. The above methods may cause the pH to not reach a level suitable for the next treatment and transfer in advance, or cause low efficiency due to repeated testing, thereby missing the best time for transfer and affecting the treatment efficiency of the boric acid waste liquid;

[0006] 2. When treating the existing boric acid compound waste liquid, a cleaning mechanism is usually set to clean the filter screen during liquid transfer. However, the cleaning mechanism needs to be manually started separately during actual use. In the treatment of boric acid waste liquid, the equipment coordination is low and manual intervention is required. However, manual intervention has certain errors or delays, resulting in low stability of coordination and cooperation during the operation of multi-stage treatment equipment.

[0007] In view of this, the existing structure and defects are studied and improved, and a multi-stage processing equipment and process for boric acid compound reaction is provided, in order to achieve a more practical purpose. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a multi-stage processing equipment and process for boric acid compound reaction to solve the above problems.

[0009] A multi-stage treatment device for boric acid compound reaction, comprising a metal ion precipitation kettle and an acid-base blending kettle, wherein the metal ion precipitation kettle is provided with a precipitation mechanism for removing metal ions from boric acid wastewater, the acid-base blending kettle is provided with a blending mechanism for blending the acidity and alkalinity of boric acid wastewater, the acid-base blending kettle is provided with a filtering mechanism for transferring boric acid waste liquid, the precipitation mechanism comprises a first feed inlet and a first motor, the blending mechanism comprises a second motor, a second feed inlet and a pH value detector, the filtering mechanism comprises a first sealing door, an L-shaped fixed rod, a third motor, a filter screen and a movable rod, the first feed inlet is fixedly mounted on the upper end of the metal ion precipitation kettle, and the third motor is provided with a filter screen and a movable rod. The first motor is fixedly installed on the side end of the metal ion precipitation kettle, the second motor is fixedly installed on the side end of the acid-base blending kettle, the second feed port is fixedly installed on the upper end of the acid-base blending kettle, the pH value detector is fixedly installed on the upper end of the acid-base blending kettle, a slide groove is provided at the lower end of the acid-base blending kettle, the side end of the first sealing door is provided with a second sealing door, the upper ends of the first sealing door and the second sealing door are fixedly installed with sliding rods, and the two sliding rods are respectively slidably installed on the inner side walls of the slide groove, the L-shaped fixed rod is fixedly installed on the side end of the acid-base blending kettle, the lower end of the L-shaped fixed rod is fixedly installed with a relay, and the filter is fixedly installed on the acid-base blending kettle. The inner side wall of the metal ion precipitation kettle is fixedly installed with a bracket at the circumferential end thereof, a C-shaped support rod is fixedly installed between the acid-base blending kettle and the metal ion precipitation kettle, the output ends of the first motor and the second motor are fixedly installed with stirring rods, and the two stirring rods are respectively penetrated and rotatably installed at the side ends of the metal ion precipitation kettle and the acid-base blending kettle, a pH detection probe is fixedly installed at the lower end of the pH value detector, and the end of the pH detection probe is in contact with the solution in the acid-base blending kettle, and a sealed bearing is also provided at the side end of the acid-base blending kettle, a round shaft is fixedly installed at the side end of the acid-base blending kettle, and a gear is rotatably installed at the circumferential end of the round shaft. A side rod is fixedly installed, and a first rack is fixedly installed on the side end of the side rod, a second rack is fixedly installed on the side end of the second sealing door, a push block is fixedly installed on the lower end of the second sealing door, and the same C-shaped push rod is fixedly installed on both side ends of the push block, and the C-shaped push rod is located at the upper end of the L-shaped fixed rod; the side end of the relay is electrically connected to the cylinder, the push block is fixedly installed on the side end of the cylinder, and a sealing box is fixedly installed on the upper end of the L-shaped fixed rod, the third motor is fixedly installed on the inner side wall of the sealing box, a push switch is provided on the side end of the third motor, and a round rod is fixedly installed on the output end of the third motor, and the round rod is located on the inner side wall of the sealing bearing.

[0010] Preferably, a threaded rod is fixedly installed on the side end of the round rod, the movable rod is located on the inner wall of the acid-base blending kettle, a threaded groove is penetrated through the side end of the movable rod, and the threaded rod is threadably installed on the inner wall of the threaded groove.

[0011] Preferably, a cleaning brush is provided at the lower end of the movable rod, two springs are fixedly installed between the cleaning brush and the movable rod, and two telescopic rods are also fixedly installed between the cleaning brush and the movable rod, and the two telescopic rods are respectively located on the inner side walls of the spring.

[0012] A multi-stage process for boric acid compound reaction, comprising the following steps:

[0013] S1: adding the initially filtered boric acid waste liquid into the acid-base blending kettle through the second feed port, and adding alkaline substances such as calcium hydroxide or sodium hydroxide to neutralize the boric acid waste liquid;

[0014] S2: The pH detection probe on the pH detector can detect the pH value of the solution in the acid-base blending kettle in real time. After the pH value of the solution in the acid-base blending kettle is adjusted to balance, the signal is transmitted to the relay. After the relay receives the signal, it drives the cylinder to contract and open the first sealing door and the second sealing door.

[0015] S3: When the boric acid waste liquid in the acid-base blending kettle is transferred to the metal ion precipitation kettle, the liquid in the acid-base blending kettle is filtered through the filter screen;

[0016] S4: The movable rod moves back and forth to clean the filter and avoid clogging of the filter;

[0017] S5: After the boric acid waste liquid in the acid-base blending kettle is transferred to the metal ion precipitation kettle, the user can add a specific precipitant into the metal ion precipitation kettle through the first feed port to make the heavy metal ions in the waste liquid form insoluble precipitates, thereby realizing multi-stage treatment.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, a pH value detector, a pH value detection probe, a relay and a cylinder are provided to cooperate with each other. When the boric acid waste liquid after the pH value is adjusted is professionally processed in the next step, the pH value can be monitored in real time by the pH value detection probe on the pH value detector, and after the adjustment is completed, the cylinder is driven by the relay to open the second sealing door and the first sealing door. There is no need for operators to regularly take samples from the reactor and then use the pH meter for detection, thereby improving the efficiency of detecting the boric acid waste liquid and avoiding the disadvantage of delayed manual detection.

[0020] In the present invention, the boric acid waste liquid is transferred after detection by a pH detection probe on a pH detector, thereby improving the accuracy and stability of the boric acid waste liquid during treatment. The pH value detected by the pH detector is relatively accurate, and its measurement is continuous and real-time, which can more accurately judge whether the pH has reached a level suitable for the next step of treatment, avoiding inaccurate judgment of the pH, thereby affecting the timing of liquid transfer, and possibly causing the liquid with incompletely adjusted pH to be transferred, or missing the optimal transfer time.

[0021] In the present invention, a pH value detector and a pH value detection probe are provided to automatically detect the liquid in the acid-base blending kettle, thereby reducing manual contact with a dangerous environment. Manual detection requires operators to frequently approach the reactor for sampling, and the boric acid waste liquid in the reactor may have dangerous characteristics such as corrosiveness and volatility. The pH value detector can automatically detect and realize the transfer of the liquid, thereby reducing the opportunity for operators to directly contact dangerous chemicals and reducing safety risks.

[0022] In the present invention, by providing a third motor, a threaded rod, a movable rod and a cleaning brush in coordination, the filter screen can intercept incompletely dissolved solid impurities, flocculants and the like that may exist in the acid-base blending kettle, thereby preventing these substances from entering the metal ion precipitation kettle and affecting the heavy metal ion precipitation reaction. The reciprocating movement of the cleaning brush can timely remove impurities accumulated on the filter screen, maintain good permeability of the filter screen, avoid low boric acid waste liquid transfer efficiency due to filter screen clogging, and thus improve the operating efficiency of the entire boric acid waste liquid treatment system.

[0023] In the present invention, by cooperating with a cylinder, a C-shaped push rod, a third motor and a push switch, the opening and closing of the second sealing door and the starting and stopping of the third motor are synchronized, so that the opening and closing of the second sealing door and whether the cleaning brush is cleaned are synchronized, thereby ensuring the automation and coordination when the equipment is used and reducing the manual intervention link. When the first sealing door and the second sealing door are closed, the operation of the cleaning brush also stops, thereby avoiding the ineffective operation of the cleaning brush when no liquid passes through or causing unnecessary damage to the filter net. At the same time, when the first sealing door and the second sealing door are opened, the cleaning brush is driven to run to ensure the filtration efficiency of the filter net.

[0024] In the present invention, an acid-base blending kettle and a metal ion precipitation kettle are provided to respectively achieve acid-base blending of boric acid waste liquid and precipitation of heavy metal ions, thereby realizing multi-stage treatment, which can better ensure the quality and efficiency of boric acid waste liquid treatment, and avoid the situation in which control parameters and monitoring indicators are difficult to control and precipitated waste materials cannot be classified and recovered due to treatment with a single reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the metal ion precipitation kettle of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the acid-base blending kettle of the present invention;

[0027] Figure 3 It is a schematic diagram of the explosion of the metal ion precipitation kettle structure of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the pH value detector of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the first sealing door of the present invention;

[0030] Figure 6 It is a schematic diagram of the structure of the second sealing door of the present invention;

[0031] Figure 7 It is a schematic diagram of the filter structure of the present invention;

[0032] Figure 8 It is an exploded schematic diagram of the cleaning brush structure of the present invention.

[0033] In the figure, the corresponding relationship between the component names and the figure numbers is: 1. Metal ion precipitation kettle; 11. Bracket; 12. C-shaped support rod; 13. First feed port; 14. First motor; 15. Stirring rod; 2. Acid-base blending kettle; 21. Second motor; 22. Second feed port; 23. pH value detector; 24. pH value detection probe; 25. Sealed bearing; 26. Round shaft; 27. Gear; 28. Slide; 3. First sealing door ; 31. Side rod; 32. First rack; 33. Second sealing door; 34. Second rack; 35. Sliding rod; 36. Push block; 37. C-shaped push rod; 4. L-shaped fixing rod; 41. Relay; 42. Cylinder; 43. Sealing box; 5. Third motor; 51. Push switch; 52. Round rod; 53. Threaded rod; 6. Filter; 7. Movable rod; 71. Threaded groove; 72. Cleaning brush; 73. Spring; 74. Telescopic rod. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0035] See also Figure 1 - Figure 8The present invention provides a multi-stage treatment device for boric acid compound reaction, comprising a metal ion precipitation kettle 1 and an acid-base blending kettle 2, wherein the metal ion precipitation kettle 1 is provided with a precipitation mechanism for removing metal ions from boric acid wastewater, the acid-base blending kettle 2 is provided with a blending mechanism for blending the acidity and alkalinity of the boric acid wastewater, the acid-base blending kettle 2 is provided with a filtering mechanism for transferring boric acid waste liquid, the precipitation mechanism comprises a first feed port 13 and a first motor 14, the blending mechanism comprises a second motor 21, a second feed port 22 and a pH value detector 23, the filtering mechanism comprises a first sealing door 3, an L-shaped fixed rod 4, a third motor 5, a filter screen 6 and a movable rod 7, the first feed port 13 is fixedly installed at the upper end of the metal ion precipitation kettle 1, and the first motor 14 is fixedly installed at the side end of the metal ion precipitation kettle 1 , the second motor 21 is fixedly mounted on the side end of the acid-base blending kettle 2, the second feed port 22 is fixedly mounted on the upper end of the acid-base blending kettle 2, and the pH value detector 23 is fixedly mounted on the upper end of the acid-base blending kettle 2. When the boric acid waste liquid is initially treated, the boric acid waste liquid after preliminary filtration can be first added into the acid-base blending kettle 2 through the second feed port 22. Since waste liquid and waste are inevitably generated during the preparation of the boric acid compound, and most of these waste liquids are acidic waste liquids, it is necessary to add alkaline substances such as calcium hydroxide or sodium hydroxide to neutralize the boric acid waste liquid first. The user can add a corresponding amount of alkaline substances through the second feed port 22. After the addition is completed, the second motor 21 can be started, and the second motor 21 will drive the stirring rod 15 on the second motor 21 to rotate to stir the boric acid waste liquid and the alkaline substance;

[0036] A slide groove 28 is provided at the lower end of the acid-base blending kettle 2, a second seal door 33 is provided at the side end of the first seal door 3, a slide rod 35 is fixedly installed at the upper end of the first seal door 3 and the second seal door 33, and the two slide rods 35 are respectively slidably installed on the inner side wall of the slide groove 28, an L-shaped fixed rod 4 is fixedly installed at the side end of the acid-base blending kettle 2, a relay 41 is fixedly installed at the lower end of the L-shaped fixed rod 4, and a filter screen 6 is fixedly installed on the inner side wall of the acid-base blending kettle 2; a bracket 11 is fixedly installed at the circumferential end of the metal ion precipitation kettle 1, a C-shaped support rod 12 is fixedly installed between the acid-base blending kettle 2 and the metal ion precipitation kettle 1, and a stirring rod 15 is fixedly installed at the output end of the first motor 14 and the second motor 21, and the two stirring rods 15 are respectively penetrated and rotatably installed on the metal ion precipitation kettle 1 and the acid-base blending kettle The pH detector 23 is fixedly mounted on the side end of the kettle 2, and a pH detection probe 24 is fixedly mounted on the lower end of the pH detector 23. The end of the pH detection probe 24 contacts the solution in the acid-base blending kettle 2. The pH detector 23 is arranged on the acid-base blending kettle 2. The pH detection probe 24 on the pH detector 23 can detect the pH value of the solution in the acid-base blending kettle 2 in real time. After the pH value of the solution in the acid-base blending kettle 2 is adjusted to a balance, the pH detector 23 will detect it through the pH detection probe 24. The pH detector 23 is connected to the relay 41 through a wireless module. The pH detector 23 usually has the function of outputting signals. These signals can be analog signals or digital signals. These signals can be transmitted to the relay 41 through wireless communication modules such as Bluetooth, WiFi, etc.;

[0037] A sealed bearing 25 is also provided at the side end of the acid-base blending kettle 2, a circular shaft 26 is fixedly installed at the side end of the acid-base blending kettle 2, and a gear 27 is rotatably installed at the circumferential end of the circular shaft 26. A side rod 31 is fixedly installed at the side end of the first sealing door 3, a first rack 32 is fixedly installed at the side end of the side rod 31, a second rack 34 is fixedly installed at the side end of the second sealing door 33, a push block 36 is fixedly installed at the lower end of the second sealing door 33, and the same C-shaped push rod 37 is fixedly installed at both side ends of the push block 36, and the C-shaped push rod 37 is located at the upper end of the L-shaped fixed rod 4. The side end of the relay 41 is electrically connected to the cylinder 42, and the push block 36 is fixedly installed at the side end of the cylinder 42, and the upper end of the L-shaped fixed rod 4 is fixed. A sealing box 43 is installed, and the third motor 5 is fixedly installed on the inner wall of the sealing box 43. After the relay 41 receives the signal, it will drive the cylinder 42 to contract. When the cylinder 42 contracts, it will drive the second sealing door 33 to move, and the movement of the second sealing door 33 will drive the second rack 34 to move. The movement of the second rack 34 will drive the gear 27 to rotate, and the rotation of the gear 27 will drive the first rack 32 to move. The second rack 34 and the first rack 32 will move in opposite directions, and then the first sealing door 3 and the second sealing door 33 are driven to move and open in opposite directions through the second rack 34 and the first rack 32, and the solution in the acid-base blending kettle 2 will flow from the bottom of the acid-base blending kettle 2 to the metal ion precipitation kettle 1;

[0038] A push switch 51 is provided at the side end of the third motor 5, a round rod 52 is fixedly installed at the output end of the third motor 5, the round rod 52 is located on the inner side wall of the sealed bearing 25, a threaded rod 53 is fixedly installed at the side end of the round rod 52, the movable rod 7 is located on the inner side wall of the acid-base blending kettle 2, a threaded groove 71 is penetrated through the side end of the movable rod 7, the threaded rod 53 is threadedly rotatably installed on the inner side wall of the threaded groove 71, a cleaning brush 72 is provided at the lower end of the movable rod 7, two springs 73 are fixedly installed between the cleaning brush 72 and the movable rod 7, two telescopic rods 74 are also fixedly installed between the cleaning brush 72 and the movable rod 7, and the two telescopic rods 74 are respectively located on the inner side walls of the springs 73, when the boric acid waste liquid in the acid-base blending kettle 2 is transferred to the metal ion precipitation kettle 1, the liquid in the acid-base blending kettle 2 will pass through the filter screen 6 is used for filtering, and the impurities after the blending reaction in the acid-base blending kettle 2 are filtered and removed. When the second sealing door 33 moves, it will also drive the C-shaped push rod 37 at the side end of the push block 36 to move. After the C-shaped push rod 37 moves and is fully opened, the C-shaped push rod 37 will contact the push switch 51 at the side end of the third motor 5 and press the push switch 51 to start the third motor 5. After the third motor 5 is started, it will drive the round rod 52 to rotate, and the rotation of the round rod 52 will drive the threaded rod 53 to rotate. The rotation of the threaded rod 53 will drive the movable rod 7 to move back and forth through the thread groove 71. The movement of the movable rod 7 will drive the cleaning brush 72 to move through the telescopic rod 74 and the spring 73, thereby realizing the cleaning of the filter screen 6, and avoiding the situation that the filter screen 6 may be blocked when the filter screen 6 filters the boric acid waste liquid in the acid-base blending kettle 2.

[0039] Working principle:

[0040] In the first step, in the process of preparing boric acid compounds, waste liquid and waste are inevitably generated. When boric acid is prepared by reacting borax and acid, there will be residual acid solution and salt solution generated by the reaction after the reaction; when boric acid is extracted from ore, after the ore is treated by acid leaching, acidic waste liquid containing impure metal ions will be generated, and some mother liquor will also be generated during the filtration and crystallization processes. These mother liquors may contain incompletely crystallized boric acid, impurity ions and other substances. In the preparation of boric acid compounds, these waste liquids need to be recycled and processed. The user can use the second feed port 2 2. Inject the waste liquid into the acid-base blending kettle 2. Since most of the boric acid preparation waste liquid is acidic, it is necessary to blend the pH after preliminary filtration. After the waste liquid is injected into the acid-base blending kettle 2, alkaline substances such as calcium hydroxide or sodium hydroxide can be added for neutralization. After the neutralization is completed, the liquid can be transferred to the metal ion precipitation kettle 1 to remove heavy metal ions or other harmful ions in the waste liquid. The boric acid waste liquid may contain metal ions such as iron and magnesium, which can be formed into insoluble precipitates by adding precipitants, thereby realizing multi-stage treatment of the boric acid waste liquid.

[0041] In the second step, when the boric acid waste liquid is preliminarily treated, the boric acid waste liquid after preliminary filtration can be added into the acid-base blending kettle 2 through the second feed port 22. Because waste liquid and waste are inevitably generated during the preparation of boric acid compounds, and these waste liquids are mostly acidic waste liquids, it is necessary to add alkaline substances such as calcium hydroxide or sodium hydroxide to neutralize the boric acid waste liquid first. The user can add a corresponding amount of alkaline substance through the second feed port 22. After the addition is completed, the second motor 21 can be started. The second motor 21 will drive the stirring rod 15 on the second motor 21 to rotate, stir the boric acid waste liquid and the alkaline substance, and thereby improve the efficiency of pH blending. A pH value detector 23 is set on the acid-base blending kettle 2. The pH value detection probe 24 on the pH value detector 23 can detect the pH value of the solution in the acid-base blending kettle 2 in real time. After the pH value of the solution in the acid-base blending kettle 2 is adjusted to balance, the pH value detector 23 is detected by the pH value detection probe The needle 24 will detect that the pH value detector 23 is connected to the relay 41 through a wireless module. The pH value detector 23 usually has the function of outputting signals. These signals can be analog signals or digital signals. These signals can be transmitted to the relay 41 through wireless communication modules such as Bluetooth, WiFi, etc. After the relay 41 receives the signal, it will drive the cylinder 42 to contract. When the cylinder 42 contracts, it will drive the second sealing door 33 to move. The movement of the second sealing door 33 will drive the second rack 34 to move. The movement of the second rack 34 will drive the gear 27 to rotate. The rotation of the gear 27 will drive the first rack 32 to move. The second rack 34 and the first rack 32 will move in opposite directions, and then the first sealing door 3 and the second sealing door 33 will be driven to move and open in opposite directions through the second rack 34 and the first rack 32, and the solution in the acid-base blending kettle 2 will flow from the bottom of the acid-base blending kettle 2 to the metal ion precipitation kettle 1;

[0042] The device is provided with a pH value detector 23, a pH value detection probe 24, a relay 41 and a cylinder 42, and when the boric acid waste liquid after the pH value is adjusted is professionally processed in the next step, the pH value detection probe 24 on the pH value detector 23 can be used to monitor the pH value in real time, and after the adjustment is completed, the cylinder 42 is driven by the relay 41 to open the second sealing door 33 and the first sealing door 3, without the need for operators to regularly take samples from the reactor and then use the pH meter for detection, thereby improving the efficiency of the detection of the boric acid waste liquid and avoiding the disadvantage of the delay of manual detection;

[0043] The device transfers the boric acid waste liquid after detection by a pH detection probe 24 on a pH detector 23, thereby improving the accuracy and stability of the boric acid waste liquid during treatment. The pH value detected by the pH detector 23 is relatively accurate, and its measurement is continuous and real-time, which can more accurately determine whether the pH has reached a level suitable for the next step of treatment, thereby avoiding inaccurate judgment of the pH, thereby affecting the timing of liquid transfer, and possibly causing the liquid with incompletely adjusted pH to be transferred, or missing the best transfer time;

[0044] The device automatically detects the liquid in the acid-base blending kettle 2 by setting a pH value detector 23 and a pH value detection probe 24, thereby reducing manual contact with dangerous environments. Manual detection requires operators to frequently approach the reactor for sampling, and the boric acid waste liquid in the reactor may have dangerous characteristics such as corrosiveness and volatility. The pH value detector 23 can automatically detect and realize the transfer of the liquid, thereby reducing the opportunity for operators to directly contact dangerous chemicals and reducing safety risks.

[0045] In the third step, when the boric acid waste liquid in the acid-base blending kettle 2 is transferred to the metal ion precipitation kettle 1, the liquid in the acid-base blending kettle 2 will be filtered through the filter screen 6 to filter and remove the impurities after the blending reaction in the acid-base blending kettle 2. When the second sealing door 33 moves, it will also drive the C-shaped push rod 37 at the side end of the push block 36 to move. After the C-shaped push rod 37 moves and is fully opened, the C-shaped push rod 37 will contact the push switch 51 at the side end of the third motor 5 and press the push switch 51 to start the third motor 5. After the third motor 5 is started, it will drive the round rod 52 to rotate. The rotation of the round rod 52 will drive the threaded rod 53 to rotate. The rotation of the threaded rod 53 will drive the movable rod 7 to move back and forth through the thread groove 71. The movement of the movable rod 7 will drive the cleaning brush 72 to move through the telescopic rod 74 and the spring 73, thereby realizing the cleaning of the filter screen 6, avoiding the situation that the filter screen 6 may be blocked when the filter screen 6 filters the boric acid waste liquid in the acid-base blending kettle 2;

[0046] The device is provided with a third motor 5, a threaded rod 53, a movable rod 7 and a cleaning brush 72, and intercepts the incompletely dissolved solid impurities, flocculants, etc. that may exist in the acid-base blending kettle 2 through the filter screen 6, so as to prevent these substances from entering the metal ion precipitation kettle 1 and affecting the heavy metal ion precipitation reaction. The reciprocating movement of the cleaning brush 72 can timely remove the impurities accumulated on the filter screen 6, maintain the good permeability of the filter screen 6, and avoid the low transfer efficiency of the boric acid waste liquid due to the blockage of the filter screen 6, thereby improving the operation efficiency of the entire boric acid waste liquid treatment system;

[0047] The device cooperates with the cylinder 42, the C-shaped push rod 37, the third motor 5 and the push switch 51 to make the opening and closing of the second sealing door 33 and the starting and stopping of the third motor 5 synchronous, so that the opening and closing of the second sealing door 33 and the cleaning of the cleaning brush 72 are synchronous, thereby ensuring the automation and coordination of the equipment when in use and reducing the manual intervention link. When the first sealing door 3 and the second sealing door 33 are closed, the operation of the cleaning brush 72 is also stopped, thereby avoiding the ineffective operation of the cleaning brush 72 when no liquid passes or causing unnecessary damage to the filter 6. At the same time, the cleaning brush 72 is driven to operate when the first sealing door 3 and the second sealing door 33 are opened to ensure the filtering efficiency of the filter 6.

[0048] In the fourth step, after the boric acid waste liquid in the acid-base blending kettle 2 is transferred to the metal ion precipitation kettle 1, the user can add a specific precipitant into the metal ion precipitation kettle 1 through the first feed port 13 to form insoluble precipitates of heavy metal ions in the waste liquid. At the same time, the first motor 14 on the metal ion precipitation kettle 1 can be started to drive the stirring rod 15 to rotate, so as to achieve efficient mixing of the precipitant and the boric acid waste liquid, and ensure that the precipitant and the boric acid waste liquid are in full contact, thereby achieving secondary treatment of the boric acid waste liquid;

[0049] The device is provided with an acid-base blending kettle 2 and a metal ion precipitation kettle 1, which respectively achieve acid-base blending of the boric acid waste liquid and precipitation of heavy metal ions, thereby realizing multi-stage treatment, which can better ensure the quality and efficiency of the boric acid waste liquid treatment, and avoid the control parameters and monitoring indicators that are difficult to control and the precipitated waste cannot be classified and recovered caused by the treatment of a single reactor.

[0050] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A multi-stage processing device for boric acid compound reaction, comprising a metal ion precipitation kettle (1) and an acid-base blending kettle (2), characterized in that: The metal ion precipitation kettle (1) is provided with a precipitation mechanism for removing metal ions from boric acid wastewater, the acid-base adjustment kettle (2) is provided with a blending mechanism for adjusting the pH of boric acid wastewater, and the acid-base adjustment kettle (2) is provided with a filtering mechanism for transferring boric acid waste liquid; The precipitation mechanism comprises a first feed port (13) and a first motor (14); the blending mechanism comprises a second motor (21), a second feed port (22) and a pH value detector (23); the filtering mechanism comprises a first sealing door (3), an L-shaped fixed rod (4), a third motor (5), a filter screen (6) and a movable rod (7); the first feed port (13) is fixedly mounted on the upper end of the metal ion precipitation kettle (1); the first motor (14) is fixedly mounted on the side end of the metal ion precipitation kettle (1); the second motor (21) is fixedly mounted on the side end of the acid-base blending kettle (2); the second feed port (22) is fixedly mounted on the side end of the acid-base blending kettle (2); The pH value detector (23) is fixedly mounted on the upper end of the acid-base blending kettle (2), the lower end of the acid-base blending kettle (2) is provided with a slide groove (28), the side end of the first sealing door (3) is provided with a second sealing door (33), the upper ends of the first sealing door (3) and the second sealing door (33) are both fixedly mounted with slide rods (35), and the two slide rods (35) are respectively slidably mounted on the inner side walls of the slide groove (28), the L-shaped fixed rod (4) is fixedly mounted on the side end of the acid-base blending kettle (2), the lower end of the L-shaped fixed rod (4) is fixedly mounted with a relay (41), and the filter screen (6) is fixedly mounted on the inner side wall of the acid-base blending kettle (2).

2. A multi-stage processing device for boric acid compound reaction as claimed in claim 1, characterized in that: A bracket (11) is fixedly mounted on the circumferential end of the metal ion precipitation kettle (1), a C-shaped support rod (12) is fixedly mounted between the acid-base blending kettle (2) and the metal ion precipitation kettle (1), and stirring rods (15) are fixedly mounted on the output ends of the first motor (14) and the second motor (21), and the two stirring rods (15) are respectively rotatably mounted on the side ends of the metal ion precipitation kettle (1) and the acid-base blending kettle (2).

3. A multi-stage processing device for boric acid compound reaction as claimed in claim 2, characterized in that: A pH detection probe (24) is fixedly mounted on the lower end of the pH detector (23), and the end of the pH detection probe (24) is in contact with the solution in the acid-base blending kettle (2). A sealing bearing (25) is also provided on the side end of the acid-base blending kettle (2), and a round shaft (26) is fixedly mounted on the side end of the acid-base blending kettle (2); Wherein, a gear (27) is rotatably mounted on the circumferential end of the circular shaft (26).

4. A multi-stage processing device for boric acid compound reaction as claimed in claim 3, characterized in that: A side rod (31) is fixedly mounted on the side end of the first sealing door (3), a first rack (32) is fixedly mounted on the side end of the side rod (31), and a second rack (34) is fixedly mounted on the side end of the second sealing door (33).

5. A multi-stage processing equipment for boric acid compound reaction as claimed in claim 4, characterized in that: A push block (36) is fixedly mounted on the lower end of the second sealing door (33), and a C-shaped push rod (37) is fixedly mounted on both side ends of the push block (36); Wherein, the C-shaped push rod (37) is located at the upper end of the L-shaped fixing rod (4).

6. A multi-stage processing device for boric acid compound reaction as claimed in claim 5, characterized in that: The side end of the relay (41) is electrically connected to the cylinder (42), the push block (36) is fixedly mounted on the side end of the cylinder (42), the upper end of the L-shaped fixing rod (4) is fixedly mounted with a sealing box (43), and the third motor (5) is fixedly mounted on the inner wall of the sealing box (43).

7. A multi-stage processing device for boric acid compound reaction as claimed in claim 6, characterized in that: A push switch (51) is provided at the side end of the third motor (5), and a round rod (52) is fixedly mounted at the output end of the third motor (5), wherein the round rod (52) is located on the inner side wall of the sealing bearing (25).

8. A multi-stage processing device for boric acid compound reaction as claimed in claim 7, characterized in that: A threaded rod (53) is fixedly mounted on the side end of the round rod (52); the movable rod (7) is located on the inner side wall of the acid-base blending kettle (2); and a threaded groove (71) is formed through the side end of the movable rod (7); Wherein, the threaded rod (53) is threadably mounted on the inner side wall of the threaded groove (71).

9. A multi-stage processing device for boric acid compound reaction as claimed in claim 8, characterized in that: A cleaning brush (72) is provided at the lower end of the movable rod (7), two springs (73) are fixedly installed between the cleaning brush (72) and the movable rod (7), and two telescopic rods (74) are also fixedly installed between the cleaning brush (72) and the movable rod (7); Wherein, the two telescopic rods (74) are respectively located on the inner side walls of the spring (73).

10. A multi-stage treatment process for boric acid compound reaction, characterized in that: Here are the steps: S1: adding the preliminarily filtered boric acid waste liquid into the acid-base blending kettle (2) through the second feed port (22), and adding alkaline substances such as calcium hydroxide or sodium hydroxide to neutralize the boric acid waste liquid; S2: The pH detection probe (24) on the pH detector (23) can detect the pH value of the solution in the acid-base blending kettle (2) in real time. After the pH value of the solution in the acid-base blending kettle (2) is adjusted to a balance, a signal is transmitted to the relay (41). After the relay (41) receives the signal, it drives the cylinder (42) to contract, thereby opening the first sealing door (3) and the second sealing door (33); S3: When the boric acid waste liquid in the acid-base blending kettle (2) is transferred to the metal ion precipitation kettle (1), the liquid in the acid-base blending kettle (2) is filtered through the filter screen (6); S4: the movable rod (7) moves back and forth, thereby cleaning the filter (6) to prevent the filter (6) from being blocked; S5: After the boric acid waste liquid in the acid-base blending kettle (2) is transferred to the metal ion precipitation kettle (1), the user can add a specific precipitant into the metal ion precipitation kettle (1) through the first feed port (13) to make the heavy metal ions in the waste liquid form insoluble precipitates, thereby realizing multi-stage treatment.

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