A water pollution detection device for treating waste salt for extracting lithium and a solid waste resource utilization method

Abstract

The application provides a kind of water pollution detection equipment for lithium extraction waste salt treatment and solid waste resource utilization method, relating to water pollution detection technical field, including mounting frame, adjusting mechanism, detection processing mechanism, detection mechanism and moving mechanism;The adjusting mechanism includes rotating seat, sample cup and adjusting gear, the inner side of rotating seat is rotatably connected with rotating rod, and the front end of rotating rod is fixedly connected with sample cup.The scheme finally realizes the addition of acidic PH adjusting liquid to the sample cup through the liquid inlet pipe, adjusts the filtrate to a fixed PH value, and then detects, thereby effectively improving the accuracy of detection data, through the cooperation of adjusting gear and swing tooth plate, the sample cup is shaken left and right, thereby improving the mixing efficiency of acidic PH adjusting liquid and filtrate, shortening the filtrate detection time, by adding acidic PH adjusting liquid, EDTA complex is digested and destroyed, to ensure that metal ions are completely free, improve the efficiency and effect of subsequent detection of suspended solids and heavy metals.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pollution detection, and in particular to a water pollution detection device for lithium extraction waste salt treatment and a solid waste resource utilization method. BACKGROUND

[0002] The byproduct waste salt generated by the lithium extraction process is usually classified as hazardous waste, containing harmful impurities such as fluorides and heavy metals. Traditional landfill treatment is costly, occupies land, and poses an environmental pollution risk. By recycling lithium extraction waste salt to produce potassium tetraphenylborate and mirabilite, the difficult problem of hazardous solid waste disposal can be solved, and significant economic benefits can be created. Through strict water pollution detection during the recycling process, impurities in the wastewater can be prevented from mixing into the product during the subsequent crystallization process, affecting the purity of potassium tetraphenylborate or mirabilite, and preventing toxic and harmful substances from entering the water environment, causing pollutants to destroy the aquatic ecological environment.

[0003] In related technologies, when recycling lithium extraction waste salt, the waste salt filtrate PH value needs to be adjusted to neutral. However, the existing part of the water pollution detection equipment is not convenient to adjust the filtrate PH value before detection when detecting the waste salt filtrate. The dissociation degree of EDTA complex is different under different PH conditions. The filtrate PH value needs to be adjusted to be consistent when detecting the water pollution of the filtrate, otherwise it will interfere with the detection and affect the accuracy of the detection data. And not using strong acid digestion to destroy the EDTA complex cannot ensure that the metal ions are completely dissociated, resulting in poor suspended solids detection effect.

[0004] Therefore, it is necessary to provide a water pollution detection device for lithium extraction waste salt treatment and a solid waste resource utilization method to solve the above technical problems. SUMMARY

[0005] The present application provides a water pollution detection device for lithium extraction waste salt treatment and a solid waste resource utilization method, which solves the technical problem that the water pollution detection device in related technologies is not convenient to adjust the filtrate PH value before detection when detecting the waste salt filtrate.

[0006] To solve the above technical problems, the water pollution detection device for lithium extraction waste salt treatment provided by the present application comprises a mounting frame, an adjusting mechanism, a detection processing mechanism, a detection mechanism and a moving mechanism;

[0007] The adjusting mechanism comprises a rotating seat, a sample cup and an adjusting gear, the inner side of the rotating seat is rotatably connected with a rotating rod, the front end of the rotating rod is fixedly connected with the sample cup, and the rear end of the rotating rod is fixedly connected with the adjusting gear, the front surface of the mounting frame is fixedly provided with a sliding rail, the rotating seat is slidably connected with the sliding rail, the inner side of the mounting frame is slidably connected with a swing tooth plate, the back surface of the swing tooth plate is fixedly provided with a spring, and the top of the mounting frame is provided with a liquid inlet pipe;

[0008] The detection processing mechanism comprises a funnel, a collection cup and a sliding tooth plate, the bottom of the funnel is arranged inside the top of the collection cup, the inner side of the funnel is provided with a filter membrane, the front side of the mounting frame is fixedly provided with a mounting bracket, and the collection cup is clamped on the inner side of the mounting bracket;

[0009] The detection mechanism is arranged on the top of the left side of the mounting frame and is used for detecting the PH value of the filtrate.

[0010] The moving mechanism is arranged on the front side of the mounting frame and is used for adjusting the position of the sample cup left and right.

[0011] Preferably, the sliding tooth plate is slidably connected to the inner side of the mounting frame, the top of the inner side of the mounting frame is fixedly provided with a first electric push rod, and the output end of the first electric push rod is fixedly connected with the sliding tooth plate.

[0012] Preferably, the moving mechanism comprises two belt pulleys rotatably connected to the front side of the mounting frame, the surfaces of the two belt pulleys are sleeved with a belt, the belt is fixedly connected with the rotating seat, and the left side of the back surface of the mounting frame is provided with a driving motor for driving the belt pulleys to rotate.

[0013] Preferably, the inner side of the mounting frame is rotatably connected with a negative pressure suction mechanism, the negative pressure suction mechanism comprises a transmission tooth group rotatably connected to the inner side of the mounting frame, the back surface of the sliding tooth plate is fixedly provided with a tooth group, the inner side of the mounting frame is rotatably connected with a transmission gear through a rotating shaft, the top of the inner side of the mounting frame is fixedly provided with two first brackets, the inner sides of the two first brackets are fixedly provided with an air suction pipe, the inner side of the air suction pipe is slidably connected with a first piston and a piston rod, the right end of the piston rod is fixedly connected with the left side of the first piston, the surface of the piston rod is fixedly provided with a transmission tooth, the transmission tooth is engaged with the transmission gear, and the air suction pipe is communicated with the collection cup through a hose.

[0014] Preferably, the inner side of the top of the mounting frame is fixedly provided with a cleaning mechanism, the cleaning mechanism comprises two second brackets fixedly arranged on the inner side of the top of the mounting frame, the inner sides of the two second brackets are fixedly provided with a cleaning cylinder, the inner side of the cleaning cylinder is slidably connected with a second piston, the left end of the piston rod is fixedly connected with the second piston, the top of the left side of the mounting frame is provided with a fixed bracket, the inner side of the fixed bracket is provided with a water outlet pipe, the surface of the water outlet pipe is communicated with a plurality of spray heads, and the cleaning cylinder is communicated with the water outlet pipe through a hose.

[0015] Preferably, the detection mechanism comprises a detection frame fixed to the left side of the top of the mounting frame, the inner side of the detection frame is provided with a second electric push rod, the output end of the second electric push rod is fixedly provided with a connecting support, the inner side of the connecting support is rotatably connected with a rotating shaft, the front side of the rotating shaft is fixedly provided with a detection support, the inner side of the detection support is provided with a PH detection sensor, and the fixing support is fixedly connected with the detection frame.

[0016] Preferably, the back of the detection frame is fixedly provided with a turnover mechanism, the turnover mechanism comprises two tracks fixed to the back of the detection frame, the surfaces of the two tracks are slidably connected with sliding seats, the back surfaces of the two sliding seats are fixedly connected with the connecting support, the surface of the rotating shaft is fixedly provided with a turnover gear, and the back of the detection frame is fixedly provided with a turnover gear plate.

[0017] Preferably, the left side of the mounting frame is provided with an LED lamp group, the inner sides of the two sides of the mounting frame are threadedly connected with two adjusting screws, the bottoms of the four adjusting screws are fixedly provided with supporting seats, the top of the mounting frame is fixedly provided with a placing frame, and the circumferential surface of the liquid inlet pipe is fixedly connected with the placing frame.

[0018] A method for recycling waste lithium salt, comprising the following steps:

[0019] Step S1, waste salt pretreatment:

[0020] S11, dissolution: mix the waste salt with water at a mass ratio of 1:3-5, heat to 60-80 DEG C, and stir until completely dissolved;

[0021] S12, impurity removal: add 0.1-0.5% EDTA solution to complex calcium and magnesium ions, adjust the PH to 6-7, and filter to remove silicon and aluminum insoluble;

[0022] Step S2, potassium mirabilite crystallization:

[0023] S21, concentration: evaporate the filtrate to a density of 1.25-1.30 g / cm³, cool to 10-20 DEG C, and precipitate potassium mirabilite crystals;

[0024] S22, separation: centrifugal separation of crystals, mother liquor into sodium enrichment stage;

[0025] Step S3, potassium tetraphenylborate synthesis:

[0026] Mix potassium mirabilite with sodium tetraphenylborate at a molar ratio of 1:1.05-1.1, stir at PH 7-9 and temperature 25-40 DEG C for 1-2 hours to generate potassium tetraphenylborate precipitate;

[0027] Step S4, sodium enrichment and mirabilite crystallization:

[0028] S41, concentration: the mother liquor after reaction is evaporated to sodium sulfate concentration ≥ 20%, cooled to 0-5℃ to precipitate mirabilite;

[0029] S42, dehydration: mirabilite is separated by centrifugation, and anhydrous sodium sulfate is obtained by drying.

[0030] Compared with the related art, the lithium extraction waste salt treatment water pollution detection equipment and solid waste resource utilization method provided by the present application has the following beneficial effects:

[0031] The acid PH adjusting liquid is added to the sample cup through the liquid inlet pipe, and the filtrate is adjusted to a fixed PH value before detection, so as to effectively improve the accuracy of the detection data. Through the cooperation of the adjusting gear and the swinging tooth plate, the sample cup is shaken left and right, so as to improve the mixing efficiency of the acid PH adjusting liquid and the filtrate, shorten the filtrate detection time, add the acid PH adjusting liquid, digest and destroy the EDTA complex, ensure that the metal ions are completely free, improve the efficiency and effect of subsequent detection of suspended solids and heavy metals, avoid the problem that the free ion concentration detection value in the filtrate is low, and the actual residual risk is large, and improve the accuracy of water pollution detection data.

[0032] Through the left movement of the sliding tooth plate, the adjusting gear drives the sample cup to rotate through the rotating rod, and the filtrate in the sample cup is poured into the funnel. The suspended solids and particulate matter in the filtrate are filtered through the filter membrane, so as to avoid that the subsequent particulate matter blocks the detection instrument, or causes the atomization efficiency to decrease in AAS detection, and affects the data repeatability. The concentration of particulate suspended solids in the filtrate is detected by collecting and weighing the particulate matter on the top of the filter membrane. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0034] Figure 1 The best structural schematic diagram provided by the present application is shown in the figure.

[0035] Figure 2 The structural schematic diagram of the rear view of the mounting bracket provided by the present application is shown in the figure.

[0036] Figure 3 The structural schematic diagram of the adjusting mechanism and the moving mechanism provided by the present application is shown in the figure.

[0037] Figure 4 The structural schematic diagram of the rear view of the mounting bracket provided by the present application is shown in the figure. Figure 3 ​

[0038] Figure 5 A schematic diagram showing the state in which the adjusting gear moves to the right and contacts the swing toothed plate, thereby driving the sampling cup to rotate via the rotating rod, as provided by the present invention.

[0039] Figure 6 This is a schematic diagram of the detection and processing mechanism provided by the present invention;

[0040] Figure 7 for Figure 6 The diagram shows a structural schematic of the rear view of the mounting bracket.

[0041] Figure 8 A schematic diagram showing the state in which the first electric push rod extends to drive the sliding toothed plate to move to the left, and drives the sample cup to rotate by adjusting the gear and rotating rod;

[0042] Figure 9 A schematic diagram of the negative pressure suction mechanism and cleaning mechanism provided by the present invention;

[0043] Figure 10 for Figure 9 The diagram shows the state in which the sliding tooth plate drives the tooth assembly to move to the left, and the piston rod moves to the left through the transmission tooth assembly, transmission gear and transmission teeth;

[0044] Figure 11 This is a schematic diagram of the detection mechanism provided by the present invention;

[0045] Figure 12 for Figure 11 The diagram shows a structural schematic of the rear view of the testing frame.

[0046] Figure 13 for Figure 12 The enlarged structural diagram at point A is shown below;

[0047] Figure 14 The second electric push rod provided by the present invention drives the connecting bracket to move upward, the flip gear contacts the flip tooth plate, and drives the PH detection sensor to rotate clockwise through the rotating shaft.

[0048] Figure 15 The flowchart illustrates the solid waste resource utilization method provided by this invention.

[0049] Explanation of icon numbers:

[0050] 1. Mounting bracket;

[0051] 2. Adjustment mechanism; 21. Rotating seat; 22. Sample cup; 23. Adjustment gear; 24. Rotating rod; 25. Slide rail; 26. Swinging toothed plate; 27. Spring; 28. Liquid inlet pipe;

[0052] 3, detection processing mechanism;31, funnel;32, collection cup;33, sliding tooth plate;34, filter membrane;35, mounting bracket;36, first electric push rod;

[0053] 4, detection mechanism;41, detection frame;42, second electric push rod;43, connecting bracket;44, rotating shaft;45, detection bracket;46, PH detection sensor;

[0054] 5, moving mechanism;51, pulley;52, belt;53, drive motor;

[0055] 6, negative pressure suction mechanism;61, transmission tooth group;62, gear group;63, transmission gear;64, first bracket;65, suction pipe;66, first piston;67, piston rod;68, transmission gear;

[0056] 7, cleaning mechanism;71, second bracket;72, cleaning cylinder;73, second piston;74, fixed bracket;75, water outlet pipe;76, spray head;

[0057] 8, turnover mechanism;81, track;82, sliding seat;83, turnover gear;84, turnover tooth plate;

[0058] 9, LED lamp group;10, adjusting screw;11, support seat;12, placing frame.

[0059] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0061] The present application provides a kind of water pollution detection equipment for extracting lithium waste salt treatment and solid waste resource method.

[0062] First embodiment:

[0063] Please refer to Figures 1 to 8 A kind of water pollution detection equipment for extracting lithium waste salt treatment, including mounting frame 1, adjusting mechanism 2, detection processing mechanism 3, detection mechanism 4 and moving mechanism 5;

[0064] The adjusting mechanism 2 comprises a rotating seat 21, a sample cup 22 and an adjusting gear 23, the inner side of the rotating seat 21 is rotationally connected with a rotating rod 24, the front end of the rotating rod 24 is fixedly connected with the sample cup 22, the rear end of the rotating rod 24 is fixedly connected with the adjusting gear 23, the front side of the mounting frame 1 is fixedly provided with a sliding rail 25, the rotating seat 21 is slidingly connected with the sliding rail 25, the inner side of the mounting frame 1 is slidingly connected with a swing tooth plate 26, the back surface of the swing tooth plate 26 is fixedly provided with a spring 27, and the top of the mounting frame 1 is provided with a liquid inlet pipe 28;

[0065] Please combine Figure 5 : start the driving motor 53, the driving motor 53 rotates to drive the two belt pulleys 51 to rotate, the two belt pulleys 51 rotate to drive the rotating seat 21 to slide on the surface of the sliding rail 25 to the right, when the rotating seat 21 moves, the sample cup 22 and the adjusting gear 23 are driven to move to the right, when the sample cup 22 moves to the bottom of the liquid inlet pipe 28, the acid PH adjusting liquid is added into the sample cup 22 through the liquid inlet pipe 28, the filtrate is adjusted to a fixed PH value, and the sample cup 22 is sealed by using the sealing cover, when the adjusting gear 23 moves to the right and contacts with the swing tooth plate 26, the control driving motor 53 is controlled to rotate in opposite directions, so that the adjusting gear 23 drives the sample cup 22 to shake through the rotating rod 24, so that the acid PH adjusting liquid and the filtrate are quickly mixed;

[0066] Further, before adjusting the PH value of the filtrate, the PH value of the filtrate is detected by the detection mechanism 4 in advance, then the acid PH adjusting liquid is quantitatively added according to the detection result, so that the adjustment efficiency of the PH value of the filtrate can be improved, after the acid PH adjusting liquid is mixed with the filtrate, the PH value of the filtrate is detected again by using the detection mechanism 4, so that the PH value of the filtrate is ensured to be in a unified standard;

[0067] The detection processing mechanism 3 comprises a funnel 31, a collection cup 32 and a sliding tooth plate 33, the bottom of the funnel 31 is arranged on the inner side of the top of the collection cup 32, the inner side of the funnel 31 is provided with a filter membrane 34, the front side of the mounting frame 1 is fixedly provided with a mounting bracket 35, and the collection cup 32 is clamped on the inner side of the mounting bracket 35;

[0068] The sliding tooth plate 33 is slidingly connected to the inner side of the mounting frame 1, the top of the inner side of the mounting frame 1 is fixedly provided with a first electric push rod 36, and the output end of the first electric push rod 36 is fixedly connected with the sliding tooth plate 33;

[0069] Please combine Figure 8: the sample cup 22 is adjusted to the left side of the top of the funnel 31 through the moving mechanism 5, the sealing cover is removed, then the first electric push rod 36 is started, the first electric push rod 36 is extended to drive the sliding gear plate 33 to slide to the left side of the inside of the mounting frame 1, when the sliding gear plate 33 is in contact with the adjusting gear 23, the adjusting gear 23 drives the sample cup 22 to rotate clockwise through the rotating rod 24, the filtrate in the sample cup 22 flows into the funnel 31, the filtrate is filtered through the filter membrane 34, the filtered filtrate enters the collection cup 32, and the filtrate is collected through the pipeline communicated with the bottom of the collection cup 32;

[0070] Preferably, the filter membrane 34 is of a detachable structure, after the filter membrane 34 is detached, the particulate matter on the top of the filter membrane 34 is collected and weighed, so that the concentration of the particulate suspended matter in the filtrate is detected, and the pipeline at the bottom of the collection cup 32 is provided with a one-way valve;

[0071] Further, after the filtrate in the sample cup 22 is all poured into the funnel 31, the funnel 31 is sealed through the sealing cover;

[0072] The detection mechanism 4 is arranged on the top of the left side of the mounting frame 1 and is used for detecting the PH value of the filtrate;

[0073] The moving mechanism 5 is arranged on the front side of the mounting frame 1 and is used for adjusting the position of the sample cup 22 left and right.

[0074] The moving mechanism 5 comprises two belt pulleys 51 rotatably connected to the front side of the mounting frame 1, the surfaces of the two belt pulleys 51 are sleeved with a belt 52, the belt 52 is fixedly connected with the rotating seat 21, and the left side of the back of the mounting frame 1 is provided with a driving motor 53 used for driving the belt pulley 51 to rotate;

[0075] Please combine Figure 3 and Figure 4 : the driving motor 53 is started, the driving motor 53 drives the left side belt pulley 51 to rotate, the left side belt pulley 51 rotates to drive the right side belt pulley 51 to rotate through the belt 52, and the rotating seat 21 is moved through the rotation of the two belt pulleys 51 and the belt 52.

[0076] The embodiment is different from the existing water pollution detection equipment. The device adds acidic PH adjusting liquid into the sample cup 22 through the liquid inlet pipe 28, adjusts the filtrate to a fixed PH value, and then detects, thereby effectively improving the accuracy of the detection data. The cooperation of the adjusting gear 23 and the swing tooth plate 26 makes the sample cup 22 shake left and right, thereby improving the mixing efficiency of the acidic PH adjusting liquid and the filtrate, shortening the filtrate detection time, and improving the efficiency and effect of the subsequent detection of suspended solids and heavy metals. The addition of acidic PH adjusting liquid can ensure that the metal ions are completely free, improve the efficiency and effect of the subsequent detection of suspended solids and heavy metals, avoid the problem that the free ion concentration detection value in the filtrate is low and the actual residual risk is high, and improve the accuracy of the water pollution detection data.

[0077] By moving the slide tooth plate 33 to the left, the adjusting gear 23 drives the sample cup 22 to rotate through the rotating rod 24, and the filtrate in the sample cup 22 is poured into the funnel 31. The filter membrane 34 filters the suspended solids and particulate matter in the filtrate, avoids the subsequent particulate matter from blocking the detection instrument, or causes the atomization efficiency to decrease in AAS detection, and affects the data repeatability. The concentration of the particulate suspended solids in the filtrate is detected by collecting and weighing the particulate matter on the top of the filter membrane 34.

[0078] Second embodiment:

[0079] Please refer to Figure 7 , Figures 9 to 11 , the inner side of the mounting bracket 1 is rotationally connected with a negative pressure suction mechanism 6, the negative pressure suction mechanism 6 includes a transmission gear set 61 rotationally connected to the inner side of the mounting bracket 1, the back of the slide tooth plate 33 is fixedly provided with a gear set 62, the inner side of the mounting bracket 1 is rotationally connected with a transmission gear 63 through a rotating shaft, the top of the inner side of the mounting bracket 1 is fixedly provided with two first supports 64, the inner sides of the two first supports 64 are fixedly provided with an air suction pipe 65, the inner side of the air suction pipe 65 is slidably connected with a first piston 66 and a piston rod 67, the right end of the piston rod 67 is fixedly connected with the left side of the first piston 66, the surface of the piston rod 67 is fixedly provided with a transmission gear 68, the transmission gear 68 is engaged with the transmission gear 63, and the air suction pipe 65 is communicated with the collection cup 32 through a hose;

[0080] Please refer to Figure 9 and Figure 10When the filtrate in the sample cup 22 is all poured into the funnel 31, and the funnel 31 is sealed by the sealing cover, the first electric push rod 36 continuously drives the sliding tooth plate 33 to move leftwards, and when the sliding tooth plate 33 is out of contact with the adjusting gear 23, the sample cup 22 is kept in an inclined state, and the tooth group 62 drives the transmission gear 63 to rotate through the movement of the sliding tooth plate 33, the transmission gear 63 drives the transmission gear teeth 68 and the piston rod 67 to move leftwards through the rotation of the transmission gear 63, and the piston rod 67 drives the first piston 66 to slide leftwards in the air suction pipe 65, so that the gas in the collection cup 32 is sucked out through the hose, a negative pressure is formed in the collection cup 32, and the filtration efficiency of the filtrate is improved.

[0081] The inner side of the top of the mounting frame 1 is fixedly provided with a cleaning mechanism 7, the cleaning mechanism 7 comprises two second supports 71 fixedly arranged on the inner side of the top of the mounting frame 1, the inner side of each of the two second supports 71 is fixedly provided with a cleaning cylinder 72, the inner side of the cleaning cylinder 72 is slidably connected with a second piston 73, the left end of the piston rod 67 is fixedly connected with the second piston 73, the top of the left side of the mounting frame 1 is provided with a fixed support 74, the inner side of the fixed support 74 is provided with a water outlet pipe 75, the surface of the water outlet pipe 75 is communicated with a plurality of spray heads 76, and the cleaning cylinder 72 is communicated with the water outlet pipe 75 through a hose.

[0082] Please refer to Figures 9 to 11 When the transmission gear 63 drives the piston rod 67 to move leftwards through the transmission gear teeth 68, the second piston 73 slides leftwards in the cleaning cylinder 72 through the movement of the piston rod 67, and then the cleaning liquid in the water outlet pipe 75 is transported into the water outlet pipe 75 through the hose and sprayed out through the spray heads 76, so that the detection end of the PH detection sensor 46 is cleaned.

[0083] Preferably, the surface of the cleaning cylinder 72 is communicated with a hose and a water suction pipe, and the surfaces of the hose and the water suction pipe are both provided with a one-way valve.

[0084] In the embodiment, when the first electric push rod 36 continuously drives the sliding tooth plate 33 to move leftwards, the sliding tooth plate 33 drives the transmission gear 63 to rotate through the tooth group 62, the transmission gear 63 drives the piston rod 67 to move leftwards through the transmission gear 63 and the transmission gear teeth 68, and the first piston 66 slides leftwards in the air suction pipe 65, so that the gas in the collection cup 32 is sucked out through the hose, a negative pressure is formed in the collection cup 32, the filtration time of the filtrate is shortened, and the filtration efficiency of the filtrate is improved, and the second piston 73 slides leftwards in the cleaning cylinder 72 through the movement of the piston rod 67, the cleaning liquid is transported into the water outlet pipe 75 through the hose, and is sprayed out through the spray heads 76, so that the detection end of the PH detection sensor 46 is cleaned, and cross infection is avoided.

[0085] The third embodiment is as follows:

[0086] Please refer to Figure 1 、 Figures 11 to 14 , the detection mechanism 4 includes detection frame 41 fixed on the top left side of the mounting frame 1, the inner side of the detection frame 41 is provided with the second electric push rod 42, the output end of the second electric push rod 42 is fixedly provided with the connecting bracket 43, the inner side of the connecting bracket 43 is rotatably connected with the rotating shaft 44, the front side of the rotating shaft 44 is fixedly provided with the detection bracket 45, the inner side of the detection bracket 45 is provided with the PH detection sensor 46, and the fixed bracket 74 is fixedly connected with the detection frame 41;

[0087] Please combine Figure 1 and Figure 11 : start the second electric push rod 42, the second electric push rod 42 extends downward to drive the connecting bracket 43 to move downward, the connecting bracket 43 drives the detection bracket 45 and the PH detection sensor 46 to move downward through the rotating shaft 44, so that the bottom end of the PH detection sensor 46 is inserted into the sample cup 22, thereby detecting the PH of the filtrate in the sample cup 22.

[0088] The back of the detection frame 41 is fixedly provided with the turnover mechanism 8, the turnover mechanism 8 includes two tracks 81 fixedly provided on the back of the detection frame 41, the surfaces of the two tracks 81 are slidably connected with the sliding seats 82, the backs of the two sliding seats 82 are fixedly connected with the connecting bracket 43, the surface of the rotating shaft 44 is fixedly provided with the turnover gear 83, and the back of the detection frame 41 is fixedly provided with the turnover tooth plate 84;

[0089] Please combine Figure 12 and Figure 13 : start the second electric push rod 42, the second electric push rod 42 drives the PH detection sensor 46 to move upward through the connecting bracket 43, the rotating shaft 44 and the detection bracket 45, the rotating shaft 44 moves upward during the movement, when the turnover gear 83 contacts the turnover tooth plate 84, the turnover gear 83 drives the detection bracket 45 and the PH detection sensor 46 to rotate clockwise through the rotating shaft 44, thereby facilitating the nozzle 76 to clean the detection end of the PH detection sensor 46;

[0090] Further, start the second electric push rod 42, the second electric push rod 42 drives the PH detection sensor 46 to move downward through the connecting bracket 43, the rotating shaft 44 and the detection bracket 45, under the cooperation of the turnover gear 83 and the turnover tooth plate 84, the rotating shaft 44 drives the detection bracket 45 and the PH detection sensor 46 to rotate counterclockwise, thereby resetting the position of the PH detection sensor 46.

[0091] The left side of the mounting frame 1 is provided with an LED lamp set 9, the inner sides of the two sides of the mounting frame 1 are both screw-connected with two adjusting screw rods 10, the bottoms of the four adjusting screw rods 10 are all fixedly provided with supporting seats 11, the top of the mounting frame 1 is fixedly provided with a placing rack 12, and the circumferential surface of the liquid inlet pipe 28 is fixedly connected with the placing rack 12.

[0092] Preferably, the turbidity of the filtrate is preliminarily detected through the LED lamp set 9, and the use height of the mounting frame 1 can be adjusted by rotating the adjusting screw rod 10.

[0093] In the embodiment, the second electric push rod 42 extends downward to drive the connecting bracket 43 to move downward, the connecting bracket 43 drives the detection bracket 45 and the PH detection sensor 46 to move downward through the rotating shaft 44, so that the PH value of the filtrate is detected through the PH detection sensor 46, and when the second electric push rod 42 is retracted upward, the rotating shaft 44, the PH detection sensor 46 and the turnover gear 83 and the like are simultaneously moved upward, when the turnover gear 83 contacts the turnover toothed plate 84, the turnover gear 83 drives the detection bracket 45 and the PH detection sensor 46 to rotate clockwise through the rotating shaft 44, so that the detection end of the PH detection sensor 46 is cleaned by the nozzle 76, and the cleaning effect of the PH detection sensor 46 is improved.

[0094] Fourth embodiment:

[0095] Please refer to Figure 15 A method for recycling waste lithium salt, comprising the following steps:

[0096] Step S1, waste salt pretreatment:

[0097] S11, dissolution: mix the waste salt with water according to the mass ratio of 1:3-5, heat to 60-80℃, and stir until completely dissolved;

[0098] S12, impurity removal: add 0.1-0.5% EDTA solution to complex calcium and magnesium ions, adjust the pH to 6-7, and filter to remove silicon and aluminum insoluble substances;

[0099] Step S2, potassium mirabilite crystallization:

[0100] S21, concentration: evaporate the filtrate to a density of 1.25-1.30 g / cm³, cool to 10-20℃, and precipitate potassium mirabilite crystals;

[0101] S22, separation: centrifugal separation of crystals, mother liquor into sodium enrichment stage;

[0102] Step S3, potassium tetraphenylborate synthesis:

[0103] The potassium mirabilite is mixed with sodium tetraphenylborate at a molar ratio of 1:1.05-1.1, and a potassium tetraphenylborate precipitate is generated by stirring and reacting at a pH of 7-9 and a temperature of 25-40 DEG C for 1-2 hours;

[0104] Step S4, sodium enrichment and mirabilite crystallization:

[0105] S41, concentration: the mother liquor after reaction is evaporated to a sodium sulfate concentration of 20% or more, and cooled to 0-5 DEG C to precipitate mirabilite;

[0106] S42, dehydration: after centrifugal separation of the mirabilite, anhydrous sodium sulfate is obtained by drying.

[0107] In this embodiment, sodium tetraphenylborate reacts with K + A specific precipitation reaction occurs, selectively generating potassium tetraphenylborate, which has a solubility much lower than sodium salt, achieving efficient directional conversion of potassium, and the purity of potassium tetraphenylborate is 98% or more, which can be directly used as electronic materials or analytical reagents, and the economic value is 5-10 times higher than that of traditional potassium sulfate products;

[0108] In the pretreatment stage, EDTA complexation and pH adjustment combination technology is used to remove impurities such as calcium, aluminum and silicon, so that co-precipitation is avoided during the crystallization process, and the sodium enrichment mother liquor is recycled for mirabilite crystallization process, forming a closed loop, reducing fresh water and chemical consumption, and reducing the overall cost;

[0109] The sulfate in the waste salt is converted into industrial-grade mirabilite, avoiding soil compaction and water pollution caused by direct discharge of sulfate, meeting the requirements of the Solid Waste Pollution Environment Prevention and Control Law, reducing the amount of final discharge of solid waste, and achieving the green production goal of waste treatment.

[0110] Please refer to Figures 1 to 15 The working principle of the water pollution detection equipment for lithium extraction waste salt treatment and the solid waste resource utilization method provided by the application is as follows:

[0111] Step S1, the sample liquid is quantitatively poured into the sample cup 22, and then the second electric push rod 42 is started, the second electric push rod 42 is extended downward to drive the connecting bracket 43 to move downward, the connecting bracket 43 drives the detection bracket 45 and the PH detection sensor 46 to move downward through the rotating shaft 44, the bottom end of the PH detection sensor 46 is inserted into the sample cup 22, the PH of the sample cup 22 is detected, and the detection data is automatically recorded;

[0112] Step S2, start the drive motor 53, drive motor 53 rotates to drive the two pulley 51 rotation, two pulley 51 rotation through the belt 52 drive rotating seat 21 in the surface of the slide rail 25 to the right slide, rotating seat 21 moves through the sample cup 22 and the adjusting gear 23 to the right when the sample cup 22 moves to the bottom of the liquid inlet pipe 28, according to the detection data through the liquid inlet pipe 28 to the sample cup 22 add acid PH adjusting liquid, adjust the filtrate to a fixed PH value, and use the sealing cover to seal the sample cup 22, when the adjusting gear 23 moves to the right and the swing tooth plate 26 contact, control drive motor 53 positive and negative rotation, make the adjusting gear 23 through the rotating rod 24 drive sample cup 22 to shake, so that the acid PH adjusting liquid and filtrate fast mixing;

[0113] When the acid PH adjusting liquid and filtrate mixed, use detection mechanism 4 again to detect the PH value of the filtrate, ensure that the PH value of the filtrate is in the unified standard;

[0114] Step S3, through the moving mechanism 5 to adjust the sample cup 22 to the left side of the top of the funnel 31, and remove the sealing cover, then start the first electric push rod 36, the first electric push rod 36 extends to drive the sliding tooth plate 33 to slide to the left side of the mounting frame 1, when the sliding tooth plate 33 and the adjusting gear 23 contact, the adjusting gear 23 drives the sample cup 22 to rotate clockwise through the rotating rod 24, so that the filtrate in the sample cup 22 flows into the funnel 31, and the filtrate is filtered through the filter membrane 34, and the filtered filtrate enters the collection cup 32, and the filtrate is collected through the pipeline connected to the bottom of the collection cup 32. Subsequent water pollution detection;

[0115] Step S4, when the filtrate in the sample cup 22 is poured into the funnel 31, and the funnel 31 is sealed by the sealing cover, the first electric push rod 36 continuously drives the sliding tooth plate 33 to move to the left, and when the sliding tooth plate 33 and the adjusting gear 23 are disengaged, the sample cup 22 remains inclined, and the gear set 62 is engaged with the transmission gear set 61 under the movement of the sliding tooth plate 33, and drives the transmission gear 63 to rotate through the transmission gear set 61, the transmission gear 63 rotates to drive the transmission gear 68 and the piston rod 67 to move to the left, and the piston rod 67 moves to drive the first piston 66 to slide to the left in the air suction pipe 65, so that the gas in the collection cup 32 is sucked out by the hose, and a negative pressure is formed in the collection cup 32;

[0116] Step S5, start the second electric push rod 42, the second electric push rod 42 drives the PH detection sensor 46 to move upward through the connecting bracket 43, the rotating shaft 44 and the detection bracket 45, the rotating shaft 44 moves to drive the turnover gear 83 to move upward at the same time, when the turnover gear 83 and the turnover tooth plate 84 contact, the turnover gear 83 drives the detection bracket 45 and the PH detection sensor 46 to rotate clockwise 90 degrees through the rotating shaft 44.

[0117] Step S6, please combine step S4 and step S5, when the transmission gear 63 is driven by the transmission teeth 68 to move the piston rod 67 to the left, the second piston 73 is moved to the left inside the cleaning cylinder 72 by the piston rod 67, the cleaning liquid in the water outlet pipe 75 is transported to the water outlet pipe 75 through the hose, and is sprayed out through the spray head 76 to clean the detection end of the PH detection sensor 46.

[0118] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation, direct / indirect application in other related technical fields within the concept of the present application, and the contents of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A device for detecting water pollution in lithium extraction waste salt treatment, characterized in that, Includes mounting frame, adjustment mechanism, detection and processing mechanism, detection mechanism, and moving mechanism; The adjustment mechanism includes a rotating seat, a sample cup, and an adjustment gear. A rotating rod is rotatably connected to the inner side of the rotating seat. The front end of the rotating rod is fixedly connected to the sample cup, and the rear end of the rotating rod is fixedly connected to the adjustment gear. A slide rail is fixedly provided on the front side of the mounting frame. The rotating seat is slidably connected to the slide rail. A swing toothed plate is slidably connected to the inner side of the mounting frame. A spring is fixedly provided on the back side of the swing toothed plate. A liquid inlet pipe is provided on the top of the mounting frame. The detection and processing mechanism includes a funnel, a collection cup, and a sliding toothed plate. The bottom of the funnel is located inside the top of the collection cup. A filter membrane is provided inside the funnel. A mounting bracket is fixed to the front of the mounting frame, and the collection cup is snapped into the inside of the mounting bracket. The detection mechanism is located on the top left side of the mounting frame and is used to detect the pH value of the filtrate. The moving mechanism is located on the front side of the mounting frame and is used to adjust the position of the sample cup left and right. A negative pressure suction mechanism is rotatably connected to the inner side of the mounting frame. The negative pressure suction mechanism includes a transmission gear set rotatably connected to the inner side of the mounting frame. A tooth set is fixed on the back of the sliding tooth plate. A transmission gear is rotatably connected to the inner side of the mounting frame via a rotating shaft. Two first brackets are fixedly installed on the top of the inner side of the mounting frame. An air extraction pipe is fixedly installed on the inner side of the two first brackets. A first piston and a piston rod are slidably connected to the inner side of the air extraction pipe. The right end of the piston rod is fixedly connected to the left side of the first piston. Transmission teeth are fixedly installed on the surface of the piston rod. The transmission teeth mesh with the transmission gear. The air extraction pipe is connected to the collection cup via a hose. A cleaning mechanism is fixedly installed on the inner side of the top of the mounting frame. The cleaning mechanism includes two second brackets fixedly installed on the inner side of the top of the mounting frame. A cleaning cylinder is fixedly installed on the inner side of the two second brackets. A second piston is slidably connected to the inner side of the cleaning cylinder. The left end of the piston rod is fixedly connected to the second piston. A fixed bracket is provided on the top of the left side of the mounting frame. A water outlet pipe is provided on the inner side of the fixed bracket. Multiple nozzles are connected to the surface of the water outlet pipe. The cleaning cylinder is connected to the water outlet pipe through a hose.

2. The water pollution detection equipment for lithium extraction waste salt treatment according to claim 1, characterized in that, The sliding toothed plate is slidably connected to the inner side of the mounting frame, and a first electric push rod is fixedly provided on the top of the inner side of the mounting frame. The output end of the first electric push rod is fixedly connected to the sliding toothed plate.

3. The water pollution detection equipment for lithium extraction waste salt treatment according to claim 1, characterized in that, The moving mechanism includes two pulleys rotatably connected to the front side of the mounting frame. A belt is fitted on the surface of the two pulleys and the belt is fixedly connected to the rotating seat. A drive motor for driving the pulleys to rotate is provided on the left side of the back of the mounting frame.

4. The water pollution detection equipment for lithium extraction waste salt treatment according to claim 1, characterized in that, The detection mechanism includes a detection frame fixed to the top left side of the mounting frame. A second electric push rod is provided on the inner side of the detection frame. A connecting bracket is fixed to the output end of the second electric push rod. A rotating shaft is rotatably connected to the inner side of the connecting bracket. A detection bracket is fixed to the front side of the rotating shaft. A pH detection sensor is provided on the inner side of the detection bracket. The fixed bracket is fixedly connected to the detection frame.

5. The water pollution detection equipment for lithium extraction waste salt treatment according to claim 4, characterized in that, The back of the testing frame is fixedly provided with a flipping mechanism, which includes two rails fixedly provided on the back of the testing frame. The surfaces of the two rails are slidably connected with sliding seats. The backs of the two sliding seats are fixedly connected to the connecting bracket. The surface of the rotating shaft is fixedly provided with a flipping gear, and the back of the testing frame is fixedly provided with a flipping toothed plate.

6. The water pollution detection equipment for lithium extraction waste salt treatment according to claim 1, characterized in that, An LED light group is provided on the left side of the mounting frame. Two adjusting screws are threaded to the inner sides of both sides of the mounting frame. Support seats are fixed at the bottom of the four adjusting screws. A placement frame is fixed to the top of the mounting frame. The peripheral side of the liquid inlet pipe is fixedly connected to the placement frame.

7. A method for resource utilization of lithium extraction waste salt solid waste, characterized in that, The method for resource recovery of lithium extraction waste salt solid waste includes the water pollution detection equipment and the following steps as described in any one of claims 1-6: Step S1, Waste Salt Pretreatment: S11. Dissolving: Mix waste salt and water at a mass ratio of 1:3-5, heat to 60-80℃, and stir until completely dissolved; S12. Impurity removal: Add 0.1-0.5% EDTA solution to complex calcium and magnesium ions, adjust the pH to 6-7, and filter to remove insoluble silicon and aluminum. Step S2, potassium sulfate crystallization: S21. Concentration: Evaporate the filtrate to a density of 1.25-1.30 g / cm³, cool to 10-20℃, and potassium sulfate crystals will precipitate. S22. Separation: Centrifugation separates the crystals, and the mother liquor enters the sodium enrichment stage; Step S3, synthesis of potassium tetraphenylborate: Potassium sulfate and sodium tetraphenylborate are mixed at a molar ratio of 1:1.05-1.1 and stirred at pH 7-9 and temperature 25-40℃ for 1-2 hours to produce potassium tetraphenylborate precipitate. Step S4, Sodium enrichment and Glauber's salt crystallization: S41. Concentration: Evaporate the mother liquor after reaction to a sodium sulfate concentration ≥20%, and cool to 0-5℃ to precipitate sodium sulfate; S42. Dehydration: After centrifugation, Glauber's salt is dried to obtain anhydrous sodium sulfate.

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