Acid leaching tank for recovering indium in liquid crystal screen and use method of acid leaching tank

Abstract

The invention discloses an acid leaching tank for recovering indium in a liquid crystal screen and a using method thereof, and belongs to the technical field of acid leaching tanks. A filter cartridge moves downwards and drives a triangular block to be in contact with one side of a push block, and a top cover seals an opening in the top of an acid leaching tank main body, so that external impurities cannot be introduced in the whole acid leaching process; when the push block rotates clockwise, the triangular block is extruded upwards, the triangular block drives the filter drum to move upwards, and when the push block continues to rotate and is separated from the triangular block, the top cover is supported through the elastic force of the first spring, so that the filter drum drives the crushed aggregates to move downwards in an accelerated manner, and the filter drum drives the internal crushed aggregates to shake up and down in the acid leaching tank main body in the process; and meanwhile, the rotating disc drives the two stirring rods through the two extension rods to stir the acid liquor, the fluidity of the acid liquor in the acid leaching tank body is improved, and therefore the acid liquor makes full contact with the crushed materials, indium can be leached out rapidly, and efficient recovery treatment work of indium is facilitated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of acid leaching tank, and particularly relates to an acid leaching tank for recovering indium in liquid crystal screens and a use method thereof. BACKGROUND

[0002] Indium is a key material in the manufacture of liquid crystal screens. With the rapid update and replacement of electronic products, a large number of liquid crystal screens containing indium are discarded. Since indium is a rare metal, its global reserves are relatively limited. Recovering indium from discarded liquid crystal screens can not only reduce the dependence on primary indium ore, but also reduce the potential harm of electronic waste to the environment.

[0003] The acid leaching method is an effective method for recovering indium. In the acid leaching tank, by selecting appropriate acid solution (such as hydrochloric acid, sulfuric acid, etc.), under certain temperature, concentration and reaction time conditions, indium in discarded liquid crystal screens can be leached out in ionic form. However, in the current acid leaching process, the discarded liquid crystal screen fragments are large, and the fragments in the static state are difficult to fully contact with the acid solution, which leads to the difficulty in effective leaching of indium and long time consumption, which is not conducive to the efficient recovery and treatment of indium. SUMMARY

[0004] In order to overcome the above defects, the application provides an acid leaching tank for recovering indium in liquid crystal screens and a use method thereof, which solves the problem that in the current acid leaching process, the discarded liquid crystal screen fragments are large, and the fragments in the static state are difficult to fully contact with the acid solution, which leads to the difficulty in effective leaching of indium and long time consumption, which is not conducive to the efficient recovery and treatment of indium.

[0005] To achieve the above purpose, the application provides the following technical scheme: an acid leaching tank for recovering indium in liquid crystal screens, comprising an acid leaching tank body, a top cap is connected to the top of the acid leaching tank body, a crushing box is arranged above the top cap, a crushing mechanism is installed in the crushing box, support legs are fixedly connected to the two sides of the crushing box, and a discharge valve is installed at the bottom of the crushing box, a feeding valve pipe is arranged below the discharge valve, the feeding valve pipe penetrates through the middle of the top cap, lifting assemblies are fixedly connected to the two sides of the acid leaching tank body, the tops of the two lifting assemblies are fixedly connected to the two sides of the top cap, slide ways are formed in the two sides of the bottom of the top cap, isolation assemblies are slidably connected in the two slide ways, the bottom end of the feeding valve pipe is in open communication with the top of the isolation assembly, three triangular blocks are fixedly connected to the bottom of the isolation assembly at equal intervals, one side of one of the triangular blocks is overlapped with a driving assembly, and the driving assembly penetrates through and is installed at the bottom of the acid leaching tank body.

[0006] As a further scheme of the application, support frames are fixedly connected to the front and rear sides of the acid leaching tank body, a plurality of rolling rods are rotatably connected in the support frames, and discharge valves are connected to the two sides of the bottom of the acid leaching tank body.

[0007] As a further scheme of the present application: the lifting assembly includes an electric hydraulic telescopic rod, the bottom end of the electric hydraulic telescopic rod is fixed on one side of the bottom of the acid leaching tank body, a fixing seat is sleeved on the electric hydraulic telescopic rod, the fixing seat is fixed on the outer wall of the acid leaching tank body, the top end of the electric hydraulic telescopic rod is fixedly connected with a top block, and one end of the top block penetrates and slides a sliding rod.

[0008] As a further scheme of the present application: the top end of the sliding rod is fixedly connected with a stop block, the bottom end of the sliding rod is fixed on one side of the top cover, a first spring is sleeved on the sliding rod, the top end of the first spring is fixed with the bottom of the top block, and the bottom end of the first spring is fixed on the top cover.

[0009] As a further scheme of the present application: the isolation assembly includes a filter cartridge, the triangular block is fixed with the bottom of the filter cartridge, a plurality of filter holes are formed in the outer wall of the filter cartridge, L-shaped sliding strips are fixed on the top of the filter cartridge on both sides, the sliding strips are slidingly connected in the slide way, a fixing ring is clamped on the outer wall of the filter cartridge, two clamping rods penetrate and slide in the fixing ring, clamping grooves are formed in the bottom of the top cover corresponding to the positions of the two clamping rods, and the top end of the clamping rod is clamped in the clamping groove.

[0010] As a further scheme of the present application: a second spring is sleeved on the clamping rod, the top end of the second spring is fixed with the outer wall of the clamping rod, handles are fixed on the bottom ends of the two clamping rods and penetrate the fixing ring, and the bottom end of the second spring is fixed on the fixing ring.

[0011] As a further scheme of the present application: the driving assembly includes a motor, a motor base is fixedly connected outside the motor, the motor base is fixed on the bottom of the acid leaching tank body, the bottom of the inner wall of the acid leaching tank body is designed in a conical shape, the output shaft of the motor penetrates the bottom of the acid leaching tank body through a sealing bearing and is fixed with a rotating disc, one side of the rotating disc is fixed with a push block, one side of the push block is designed in an inclined surface and is overlapped with the inclined surface part of the triangular block, the two sides of the rotating disc are respectively fixed with extension rods, the end portions of the extension rods are fixed with stirring rods, and the stirring rods are located between the isolation assembly and the inner wall of the acid leaching tank body.

[0012] A use method of an acid leaching tank for recovering indium in a liquid crystal screen, the use method comprising the following steps: In the recycling of indium in liquid crystal screen, the two electric hydraulic telescopic rods are controlled to extend to drive the two top blocks to move up, the two top blocks drive the top cover to move up through the slide rod, the top block abuts against the stop block at the top of the slide rod, and the top cover drives the feed valve pipe and the bottom isolation assembly to move up until the feed valve pipe is sleeved on the discharge valve at the bottom of the crushing box, so that the feed valve pipe is connected with the discharge valve, the waste liquid crystal screen parts are added from the opening at the top of the crushing box, the parts are crushed by the crushing mechanism, and the crushed pieces enter the isolation assembly through the discharge valve and the feed valve pipe, after the feeding work of the filter cartridge in the isolation assembly is completed, acid solution is added into the acid leaching tank body, the two electric hydraulic telescopic rods are controlled to retract, the top cover drives the filter cartridge to move down, and the filter cartridge drives the indium-containing crushed material to immerse in the acid solution, the acid solution enters the filter cartridge through the filter hole and contacts with the crushed material, and reacts to leach indium in the form of ions; When the filter cartridge drives the bottom triangular block to contact the side of the push block, the top cover seals the opening at the top of the acid leaching tank body, so that foreign matter is not introduced during the whole acid leaching process, and the purity of indium extraction is ensured. During the acid leaching process, the motor is controlled to work to drive the rotating disc to rotate, the rotating disc drives the push block at the top to rotate, one side of the push block is designed as a slope and is overlapped with the slope part of the triangular block, and the triangular block is pressed upward during the clockwise rotation of the push block, so that the triangular block drives the filter cartridge to move up, the filter cartridge drives the two slide rods to move up through the top cover, the slide rod slides in the middle of the top block, and at the same time the top cover presses the two first springs above, when the push block continues to rotate and separates from the triangular block, the top cover is supported by the elastic force of the first spring, and the gravity of the top cover, the filter cartridge and the internal crushed material cooperates to make the filter cartridge drive the crushed material to move down at a high speed. During this process, the filter cartridge drives the internal crushed material to shake up and down in the acid leaching tank body, when the push block continues to rotate and contacts the next triangular block, the filter cartridge is lifted up, and in the same way, the filter cartridge drives the internal crushed material to continuously shake up and down, which increases the flowability of the crushed material in the filter cartridge, and at the same time the rotating disc drives the two stirring rods to stir the acid solution through the two extension rods, which increases the flowability of the acid solution in the acid leaching tank body, so that the acid solution fully contacts with the crushed material; After the indium in the crushed material is leached, the discharge valve at the bottom of the acid leaching tank body is opened to discharge and carry out subsequent treatment, the two electric hydraulic telescopic rods are controlled to be elongated to drive the two jacks to move upwards, the two jacks drive the cover to move upwards through the slide rods, the jacks abut against the stop blocks at the top of the slide rods, until the feeding valve pipe is connected with the discharge valve, at this time, the filter cartridge is completely separated from the acid leaching tank body, the handle is pressed down to drive the two clamping rods to move downwards, the clamping rods are separated from the clamping grooves at the bottom of the cover, the locking state between the cover and the filter cartridge is released, the filter cartridge is pushed to drive the two slides to slide in the two slide ways, the filter cartridge is pushed to the rolling rods in the support frame, and the filter cartridge is convenient to be disassembled; when the filter cartridge is replaced, the filter cartridge is pushed into the bottom of the cover from the rolling rods on the other side, the L-shaped slide rods slide into the slide ways at the bottom of the cover, the handle is pressed down to drive the clamping rods to move downwards, when the clamping rods are directly below the clamping grooves at the bottom of the cover, the handle is released, the clamping rods are supported through the elastic force of the second springs, the top ends of the clamping rods are clamped into the clamping grooves, the purpose of locking the filter cartridge is achieved, and the filter cartridge is convenient to be quickly replaced.

[0013] Compared with the prior art, the present application has the following advantages: 1、In the present application, the filter cartridge moves downwards and drives the triangular blocks to contact one side of the push block, and the cover seals the opening at the top of the acid leaching tank body, so that foreign impurities are not introduced during the whole acid leaching process, the push block at the top is driven to rotate by the rotating disc, one side of the push block is designed as an inclined surface and is overlapped with the inclined surface part of the triangular block, the triangular block is extruded upwards during the clockwise rotation of the push block, the triangular block drives the filter cartridge to move upwards, the filter cartridge drives the two slide rods to move upwards through the cover, the slide rods slide in the middle of the jacks, and the cover extrudes the two first springs above, when the push block continues to rotate and is separated from the triangular block, the cover is supported through the elastic force of the first springs, the filter cartridge drives the crushed material to move downwards at a high speed under the action of the gravity of the cover, the filter cartridge and the internal crushed material, the filter cartridge drives the internal crushed material to shake up and down in the acid leaching tank body during the process, when the push block continues to rotate and contacts the next triangular block, the filter cartridge is lifted upwards, and in the same way, the filter cartridge drives the internal crushed material to continuously shake up and down, the flowability of the crushed material in the filter cartridge is increased, the two stirring rods are driven to stir the acid liquid by the two extension rods of the rotating disc, the flowability of the acid liquid in the acid leaching tank body is increased, so that the acid liquid and the crushed material are in full contact, the indium is quickly leached out, and the efficient recovery and treatment of the indium are facilitated. 2、The two electric hydraulic telescopic rods are controlled to extend, so that the two top blocks are driven to move upwards, the two top blocks drive the top cover to move upwards through the slide rod, the top block abuts against the stop block at the top of the slide rod, until the feeding valve pipe is connected with the discharge valve, at this time, the filter cartridge is completely separated from the acid leaching tank body, the handle is pressed downwards, the handle drives the two clamping rods to move downwards, the clamping rods are separated from the clamping grooves at the bottom of the top cover, the locking state between the top cover and the filter cartridge is released, the filter cartridge is pushed, so that the two sliding rods slide in the two sliding grooves, the filter cartridge is pushed to the rolling rod in the support frame, the filter cartridge is convenient to disassemble, when the filter cartridge is replaced, the filter cartridge is pushed into the bottom of the top cover from the rolling rod on the other side, the L-shaped sliding rod slides into the sliding groove at the bottom of the top cover, the function of limiting the filter cartridge is achieved, the stability of horizontal movement of the filter cartridge is improved, the handle is pressed downwards to drive the clamping rod to move downwards, when the clamping rod is located directly below the clamping groove at the bottom of the top cover, the handle is released, the clamping rod is supported through the elastic force of the second spring, the top end of the clamping rod is clamped into the clamping groove, the purpose of locking the filter cartridge is achieved, and then the filter cartridge is convenient to replace quickly, the operation convenience is improved, and the efficiency of indium recovery is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic view of the present application; Figure 2 It is a structural schematic view of the acid leaching tank body from the bottom view of the present application; Figure 3 It is a structural schematic view of the acid leaching tank body from the section view of the present application; Figure 4 It is a structural schematic view of the acid leaching tank body separated from the top cover of the present application; Figure 5 It is a structural schematic view of the driving assembly of the present application; Figure 6 It is a structural schematic view of the isolation assembly of the present application; Figure 7 It is a structural schematic view of the top cover from the bottom view of the present application; In the drawing: 1, acid leaching tank body; 2, top cover; 3, crushing box; 4, crushing mechanism; 5, supporting leg; 6, discharge valve; 7, feeding valve pipe; 8, discharge valve; 9, support frame; 10, rolling rod; 11, lifting assembly; 111, electric hydraulic telescopic rod; 112, fixed seat; 113, top block; 114, slide rod; 115, stop block; 116, first spring; 12, isolation assembly; 121, filter cartridge; 122, filter hole; 123, sliding rod; 124, fixed ring; 125, clamping rod; 126, handle; 127, second spring; 13, sliding groove; 14, clamping groove; 15, triangular block; 16, driving assembly; 161, motor; 162, motor base; 163, rotating disc; 164, push block; 165, extension rod; 166, stirring rod. DETAILED DESCRIPTION

[0015] The technical solutions of the present application will be described in further detail below in conjunction with specific embodiments.

[0016] As shown in Figures 1-7 The present application provides a technical solution: an acid leaching tank for indium recovery in a liquid crystal screen, which comprises an acid leaching tank body 1, a top cap 2 is connected to the top of the acid leaching tank body 1, a crushing box 3 is arranged above the top cap 2, a crushing mechanism 4 is installed in the crushing box 3, support legs 5 are fixedly connected to the two sides of the crushing box 3, and a discharge valve 6 is installed at the bottom of the crushing box 3, a feeding valve pipe 7 is arranged below the discharge valve 6, and the feeding valve pipe 7 penetrates through the middle part of the top cap 2.

[0017] A lifting assembly 11 is fixedly connected to each side of the acid leaching tank body 1, and the top of each lifting assembly 11 is fixedly connected to the two sides of the top cap 2. The lifting assembly 11 comprises an electric hydraulic telescopic rod 111, the bottom end of the electric hydraulic telescopic rod 111 is fixed to one side of the bottom of the acid leaching tank body 1, a fixed seat 112 is sleeved on the electric hydraulic telescopic rod 111, and the fixed seat 112 is fixed to the outer wall of the acid leaching tank body 1. The top end of the electric hydraulic telescopic rod 111 is fixedly connected to a top block 113, and one end of the top block 113 penetrates and slides a sliding rod 114. The top end of the sliding rod 114 is fixedly connected to a stop block 115, the bottom end of the sliding rod 114 is fixed to one side of the top cap 2, a first spring 116 is sleeved on the sliding rod 114, the bottom end of the first spring 116 is fixed to the top cap 2, and the top end of the first spring 116 is fixed to the bottom of the top block 113.

[0018] The extension of the two electric hydraulic telescopic rods 111 drives the two top blocks 113 to move upwards, the two top blocks 113 drive the top cap 2 to move upwards through the sliding rod 114, the top block 113 abuts against the stop block 115 at the top of the sliding rod 114, so that the sliding rod 114 is lifted by the top block 113 through the stop block 115. The top cap 2 drives the feeding valve pipe 7 and the isolation assembly 12 at the bottom to move upwards through the lifting assembly 11, until the feeding valve pipe 7 is sleeved outside the discharge valve 6 at the bottom of the crushing box 3, so that the feeding valve pipe 7 is connected with the discharge valve 6, facilitating the addition of crushed materials into the isolation assembly 12; the downward movement of the top cap 2 seals the opening at the top of the acid leaching tank body 1, so that foreign impurities are not introduced during the entire acid leaching process, thereby ensuring the purity of indium extraction.

[0019] Two slideways 13 are arranged at the bottom of the top cap 2, and an isolation assembly 12 is slidably connected in the two slideways 13. The isolation assembly 12 comprises a filter cartridge 121, a plurality of filter holes 122 are arranged on the outer wall of the filter cartridge 121, L-shaped sliding strips 123 are fixedly connected to the two sides of the top of the filter cartridge 121, and the cross section of the slideway 13 is also L-shaped. The sliding strip 123 is slidably connected in the slideway 13 through the cooperation and clamping of the two.

[0020] The outer wall of the filter cartridge 121 is clamped with a fixing ring 124, two clamping rods 125 are slid through the fixing ring 124, the bottom of the top cover 2 is provided with a clamping groove 14 corresponding to the position of the two clamping rods 125, and the top end of the clamping rod 125 is clamped in the clamping groove 14; the clamping rod 125 is sleeved with a second spring 127, the top end of the second spring 127 is fixed with the outer wall of the clamping rod 125, the bottom end of the two clamping rods 125 is fixed with a handle 126 penetrating through the fixing ring 124, and the bottom end of the second spring 127 is fixed on the fixing ring 124. By pressing the handle 126, the handle 126 drives the two clamping rods 125 to move downward, so that the clamping rod 125 is separated from the clamping groove 14 at the bottom of the top cover 2, and the locking state between the top cover 2 and the filter cartridge 121 is conveniently released. The front and rear sides of the acid immersion tank body 1 are respectively fixedly connected with support frames 9, a plurality of rolling rods 10 are rotatably connected in the support frames 9, and the bottoms of the two sides of the acid immersion tank body 1 are respectively connected with discharge valves 8. The filter cartridge 121 is pushed to the rolling rods 10 in the support frames 9, the filter cartridge 121 is supported by the rolling rods 10, the friction generated when the filter cartridge 121 moves is reduced, and the position of the filter cartridge 121 is conveniently adjusted; the filter cartridge 121 is pushed into the bottom of the top cover 2 from the rolling rods 10 on the other side, the L-shaped sliding strip 123 slides into the chute 13 at the bottom of the top cover 2, the handle 126 is pressed downward to drive the clamping rod 125 to move downward, when the clamping rod 125 is located directly below the clamping groove 14 at the bottom of the top cover 2, the handle 126 is released, the clamping rod 125 is supported by the elastic force of the second spring 127, the top end of the clamping rod 125 is clamped into the clamping groove 14, and the filter cartridge 121 is conveniently locked and installed.

[0021] The bottom end of the feeding valve pipe 7 is in communication with the top opening of the filter cartridge 121, the bottom of the isolation assembly 12 is fixedly connected with three triangular blocks 15 at equal intervals, one side of one of the triangular blocks 15 is overlapped with a driving assembly 16, the driving assembly 16 is penetratingly installed at the bottom of the acid immersion tank body 1, the driving assembly 16 comprises a motor 161, the motor 161 is fixedly provided with a machine base 162 outside, the machine base 162 is fixed at the bottom of the acid immersion tank body 1, the bottom of the inner wall of the acid immersion tank body 1 is designed in a conical shape, the output shaft of the motor 161 is penetratingly fixed with a rotating disc 163 through a sealing bearing at the bottom of the acid immersion tank body 1, one side of the rotating disc 163 is fixed with a push block 164, and one side of the push block 164 is designed in a slope and overlaps with the slope part of the triangular block 15.

[0022] The two sides of the rotating disc 163 are respectively fixed with extension rods 165, the end of the extension rod 165 is fixed with a stirring rod 166, the stirring rod 166 is located between the isolation assembly 12 and the inner wall of the acid leaching tank body 1, in the process of the clockwise rotation of the push block 164, the triangular block 15 is extruded upward, the triangular block 15 drives the filter cartridge 121 to move upward, the filter cartridge 121 drives the two slide rods 114 to move upward through the top cover 2, when the push block 164 continues to rotate and is separated from the triangular block 15, the top cover 2 is supported by the elastic force of the first spring 116, and the filter cartridge 121 drives the crushed material to move downward at a high speed under the action of the gravity of the top cover 2, the filter cartridge 121 and the internal crushed material, in the process, the filter cartridge 121 drives the internal crushed material to vibrate up and down in the acid leaching tank body 1, so that the flowability of the crushed material in the filter cartridge 121 is increased, and the acid solution and the crushed material are fully contacted.

[0023] A use method of the acid leaching tank for recovering indium in the liquid crystal screen, the use method comprises the following steps: In the process of recovering indium in the liquid crystal screen, the two electric hydraulic telescopic rods 111 are controlled to be elongated to drive the two top blocks 113 to move upward, the two top blocks 113 drive the top cover 2 to move upward through the slide rods 114, the top block 113 abuts against the stop block 115 at the top of the slide rod 114, the top cover 2 drives the feed valve pipe 7 and the bottom isolation assembly 12 to move upward, until the feed valve pipe 7 is sleeved outside the discharge valve 6 at the bottom of the crushing box 3, the feed valve pipe 7 is connected with the discharge valve 6, the waste liquid crystal screen components are added from the opening at the top of the crushing box 3, the components are crushed by the crushing mechanism 4, the crushed blocks enter the isolation assembly 12 through the discharge valve 6 and the feed valve pipe 7, after the feeding work of the filter cartridge 121 in the isolation assembly 12 is completed, the acid solution is added into the acid leaching tank body 1, the two electric hydraulic telescopic rods 111 are controlled to be retracted, the top cover 2 drives the filter cartridge 121 to move downward, the filter cartridge 121 drives the internal crushed material containing indium to be immersed in the acid solution, the acid solution enters the inside of the filter cartridge 121 through the filter hole 122 and contacts with the crushed material, and the reaction is carried out, so that the indium is leached out in the form of ions; When the filter cartridge 121 drives the bottom triangular block 15 to contact one side of the push block 164, the top cover 2 seals the opening at the top of the acid leaching tank body 1, so that no foreign matter is introduced during the whole acid leaching process, thereby ensuring the purity of indium extraction. During the acid leaching process, the motor 161 is controlled to work to drive the rotating disc 163 to rotate, and the rotating disc 163 drives the push block 164 at the top to rotate. One side of the push block 164 is designed as a slope and is overlapped with the slope part of the triangular block 15. During the clockwise rotation of the push block 164, the push block 164 will press the triangular block 15 upwards, so that the triangular block 15 drives the filter cartridge 121 to move upwards. The filter cartridge 121 drives the two sliding rods 114 to move upwards through the top cover 2, and the sliding rods 114 slide in the middle of the top block 113. At the same time, the top cover 2 will press the two first springs 116 above. When the push block 164 continues to rotate and is separated from the triangular block 15, the top cover 2 is supported by the elastic force of the first spring 116. The top cover 2, the filter cartridge 121 and the gravity of the internal crushed materials cooperate to drive the filter cartridge 121 to move downwards at a high speed. During the process, the filter cartridge 121 drives the internal crushed materials to shake up and down in the acid leaching tank body 1. When the push block 164 continues to rotate and contacts the next triangular block 15, the filter cartridge 121 is lifted upwards, and the internal crushed materials are continuously shaken up and down, so that the flowability of the crushed materials in the filter cartridge 121 is increased. At the same time, the rotating disc 163 drives the two stirring rods 166 to stir the acid liquid through the two extension rods 165, so that the flowability of the acid liquid in the acid leaching tank body 1 is increased, and the acid liquid and the crushed materials are fully contacted. After the indium in the crushed materials is leached out, the discharge valve 8 at the bottom of the acid leaching tank body 1 is opened to discharge the crushed materials and perform subsequent treatment. The two electric hydraulic telescopic rods 111 are controlled to extend to drive the two top blocks 113 to move upwards. The two top blocks 113 drive the top cover 2 to move upwards through the sliding rods 114, so that the top block 113 abuts against the stop block 115 at the top of the sliding rod 114. Until the feeding valve pipe 7 is connected with the discharge valve 6, the filter cartridge 121 is completely separated from the acid leaching tank body 1. The handle 126 is pressed down to drive the two clamping rods 125 to move downwards, so that the clamping rods 125 are separated from the clamping grooves 14 at the bottom of the top cover 2, and the locking state between the top cover 2 and the filter cartridge 121 is released. The filter cartridge 121 is pushed to drive the two sliding strips 123 to slide in the two sliding channels 13, so that the filter cartridge 121 is pushed to the rolling rod 10 in the support frame 9, and the filter cartridge 121 is conveniently disassembled. When the filter cartridge 121 is replaced, the filter cartridge 121 is pushed into the bottom of the top cover 2 from the rolling rod 10 at the other side. The L-shaped sliding strip 123 slides into the sliding channel 13 at the bottom of the top cover 2. The handle 126 is pressed down to drive the clamping rod 125 to move downwards. When the clamping rod 125 is located directly below the clamping groove 14 at the bottom of the top cover 2, the handle 126 is released. The clamping rod 125 is supported by the elastic force of the second spring 127, so that the top end of the clamping rod 125 is clamped into the clamping groove 14, and the purpose of locking the filter cartridge 121 is achieved, thereby facilitating the rapid replacement of the filter cartridge 121.

[0024] In the description of the application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0025] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description of the terms "one scheme", "some schemes", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more schemes or examples in a suitable manner.

Claims

1. An acid leaching tank for indium recovery in liquid crystal screens, comprising an acid leaching tank body (1), characterized in that: The top of the acid leaching tank body (1) is clamped with a top cover (2), the upper side of the top cover (2) is provided with a crushing box (3), the crushing box (3) is provided with a crushing mechanism (4), the two sides of the crushing box (3) are respectively fixedly connected with support legs (5), and the bottom of the crushing box (3) is provided with a discharge valve (6), the lower side of the discharge valve (6) is provided with a feeding valve pipe (7), the feeding valve pipe (7) penetrates through the middle part of the top cover (2), the two sides of the acid leaching tank body (1) are respectively fixedly connected with lifting assemblies (11), the top of the two lifting assemblies (11) are respectively fixedly connected on the two sides of the top cover (2), the bottom of the top cover (2) is respectively provided with a slide (13), the two slides (13) are slidably connected with isolation assemblies (12), the bottom of the feeding valve pipe (7) is in open communication with the top of the isolation assembly (12), the bottom of the isolation assembly (12) is fixedly connected with three triangular blocks (15) at equal intervals, one side of one of the triangular blocks (15) is overlapped with a driving assembly (16), and the driving assembly (16) penetrates through and is installed at the bottom of the acid leaching tank body (1).

2. The acid leaching tank for recovering indium in a liquid crystal screen according to claim 1, characterized in that: The front and rear sides of the acid leaching tank body (1) are respectively fixedly connected with support frames (9), a plurality of rolling rods (10) are rotatably connected in the support frames (9), and the bottoms of the acid leaching tank body (1) are respectively connected with discharge valves (8).

3. The acid leaching tank for recovering indium in a liquid crystal screen according to claim 1, characterized in that: The lifting assembly (11) comprises an electric hydraulic telescopic rod (111), the bottom of the electric hydraulic telescopic rod (111) is fixed to one side of the bottom of the acid leaching tank body (1), the electric hydraulic telescopic rod (111) is sleeved with a fixing seat (112), the fixing seat (112) is fixed to the outer wall of the acid leaching tank body (1), the top of the electric hydraulic telescopic rod (111) is fixedly connected with a top block (113), and one end of the top block (113) penetrates and slidably has a sliding rod (114).

4. The acid leaching tank for recovering indium in a liquid crystal screen according to claim 3, characterized in that: The top of the sliding rod (114) is fixedly connected with a stop block (115), the bottom of the sliding rod (114) is fixed to one side of the top cover (2), the sliding rod (114) is sleeved with a first spring (116), the top of the first spring (116) is fixed to the bottom of the top block (113), and the bottom of the first spring (116) is fixed to the top cover (2).

5. The acid leaching tank for indium recovery in liquid crystal screen according to claim 1, characterized in that: The isolation assembly (12) comprises a filter cartridge (121), the triangular block (15) is fixed to the bottom of the filter cartridge (121), a plurality of filter holes (122) are formed in the outer wall of the filter cartridge (121), the two sides of the top of the filter cartridge (121) are respectively fixed with L-shaped sliding strips (123), the sliding strips (123) are slidably connected in the slides (13), the outer wall of the filter cartridge (121) is clamped with a fixing ring (124), two clamping rods (125) penetrate and slidably pass through the fixing ring (124), the bottom of the top cover (2) is provided with clamping grooves (14) corresponding to the positions of the two clamping rods (125), and the top of the clamping rod (125) is clamped in the clamping groove (14).

6. The acid leaching tank for recovering indium in a liquid crystal screen according to claim 5, characterized in that: The card rod (125) is sleeved with a second spring (127), the top end of the second spring (127) is fixed with the outer wall of the card rod (125), the bottom end of the two card rods (125) is fixed with the handle (126) through the fixed ring (124), and the bottom end of the second spring (127) is fixed on the fixed ring (124).

7. The acid leaching tank for indium recovery in liquid crystal screen according to claim 1, characterized in that: The driving assembly (16) comprises a motor (161), the motor (161) is fixed with a machine base (162) outside, the machine base (162) is fixed at the bottom of the acid immersion tank body (1), the bottom of the inner wall of the acid immersion tank body (1) is designed in a conical shape, the output shaft of the motor (161) is penetrated through the bottom of the acid immersion tank body (1) through a sealing bearing and is fixed with a rotating disc (163), one side of the rotating disc (163) is fixed with a push block (164), one side of the push block (164) is designed in a slope and is overlapped with the slope part of the triangular block (15), the two sides of the rotating disc (163) are respectively fixed with extension rods (165), the end of the extension rod (165) is fixed with a stirring rod (166), and the stirring rod (166) is located between the isolation assembly (12) and the inner wall of the acid immersion tank body (1).

8. A method for using the acid leaching tank for recovering indium in liquid crystal screens according to any one of claims 1-7, characterized in that, The use method comprises the following steps: When the indium in the liquid crystal screen is recycled, the two electric hydraulic telescopic rods (111) are controlled to be elongated to drive the two top blocks (113) to move upwards, the two top blocks (113) drive the top cover (2) to move upwards through the slide rod (114), the top block (113) is abutted with the stop block (115) at the top of the slide rod (114), the top cover (2) drives the feed valve pipe (7) and the bottom isolation assembly (12) to move upwards, until the feed valve pipe (7) is sleeved outside the discharge valve (6) at the bottom of the crushing box (3), the feed valve pipe (7) is connected with the discharge valve (6), the waste liquid crystal screen parts are added from the opening at the top of the crushing box (3), the parts are crushed by the crushing mechanism (4), the crushed pieces enter the inside of the isolation assembly (12) through the discharge valve (6) and the feed valve pipe (7), after the feeding work of the filter cartridge (121) in the isolation assembly (12) is completed, the acid solution is added into the acid immersion tank body (1), the two electric hydraulic telescopic rods (111) are controlled to be retracted, the top cover (2) drives the filter cartridge (121) to move downwards, the filter cartridge (121) drives the indium-containing crushed materials inside to immerse in the acid solution, the acid solution enters the inside of the filter cartridge (121) through the filter hole (122) and contacts with the crushed materials, and the indium is leached out in the form of ions through the reaction; When the filter cartridge (121) drives the bottom triangular block (15) to contact one side of the push block (164), the top cover (2) seals the opening at the top of the acid leaching tank body (1), so that foreign matter is not introduced during the entire acid leaching process, thereby ensuring the purity of indium extraction. During the acid leaching process, the control motor (161) is operated to drive the rotating disc (163) to rotate, which in turn drives the push block (164) at the top to rotate. One side of the push block (164) is designed as a slope and is overlapped with the inclined surface part of the triangular block (15). During the clockwise rotation of the push block (164), the triangular block (15) is pressed upward, so that the triangular block (15) drives the filter cartridge (121) to move upward. The filter cartridge (121) drives the two sliding rods (114) to move upward through the top cover (2), and the sliding rods (114) slide in the middle of the top block (113). At the same time, the top cover (2) presses the two first springs (116) above it. When the push block (164) continues to rotate and is separated from the triangular block (15), the top cover (2) is supported by the elastic force of the first spring (116). In combination with the gravity of the top cover (2), the filter cartridge (121) and the internal crushed material, the filter cartridge (121) drives the crushed material to move downward at a higher speed. During this process, the filter cartridge (121) drives the internal crushed material to vibrate up and down in the acid leaching tank body (1). When the push block (164) continues to rotate and contacts the next triangular block (15), the filter cartridge (121) is lifted upward, and the internal crushed material is continuously vibrated up and down, which increases the flowability of the crushed material in the filter cartridge (121). At the same time, the rotating disc (163) drives the two stirring rods (166) to stir the acid liquid through the two extension rods (165), which increases the flowability of the acid liquid in the acid leaching tank body (1), so that the acid liquid and the crushed material are in full contact. After the indium in the crushed material is leached, the discharge valve (8) at the bottom of the acid leaching tank body (1) is opened to discharge it and carry out subsequent treatment. The two electric hydraulic telescopic rods (111) are controlled to extend to drive the two jacks (113) to move upwards. The two jacks (113) drive the cover (2) to move upwards through the slide rod (114), so that the jacks (113) abut against the stop blocks (115) at the top of the slide rod (114), until the feed valve pipe (7) is connected with the discharge valve (6), at this time the filter cartridge (121) is completely separated from the acid leaching tank body (1). By pressing the handle (126), the handle (126) drives the two clamping rods (125) to move downwards, so that the clamping rods (125) are separated from the clamping grooves (14) at the bottom of the cover (2), the locking state between the cover (2) and the filter cartridge (121) is released, the filter cartridge (121) is pushed to drive the two slide bars (123) to slide in the two slide ways (13), the filter cartridge (121) is pushed to the roller (10) in the support frame (9), so as to facilitate the disassembly of the filter cartridge (121). When replacing the filter cartridge (121), the filter cartridge (121) is pushed into the bottom of the cover (2) from the roller (10) on the other side, the L-shaped slide bar (123) slides into the slide way (13) at the bottom of the cover (2), the handle (126) is pressed to drive the clamping rod (125) to move downwards, when the clamping rod (125) is located directly below the clamping groove (14) at the bottom of the cover (2), the handle (126) is released, the clamping rod (125) is supported by the elastic force of the second spring (127), the top end of the clamping rod (125) is clamped into the clamping groove (14), the purpose of locking the filter cartridge (121) is achieved, and the filter cartridge (121) is quickly replaced.

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