Safe pickling equipment and methods

Abstract

The present invention discloses a safe pickling equipment and method, which includes a protective cover, a screen barrel, a grabbing and conveying system, and a drying device. The protective cover is connected to a gas purifier, and is provided with a pickling tank, a water washing tank, and a dewatering tank. The pickling tank, the water washing tank, and the dewatering tank are all provided with a rotating bracket. The grabbing and conveying system is provided in the protective cover, and the grabbing assembly can grab the screen barrel and convey it. The drying device includes a feed pipe connected to the protective cover. The present invention solves the current situation of manual loading, transportation, and unloading. The stations are compact and occupy little space, which greatly reduces the energy consumption of transfer between stations, improves production and processing efficiency, and reduces production costs. Compared with traditional acid decomposition devices, the pickling operation of aluminum slag is carried out by combining a screen barrel and a grabbing and conveying system, making the entire process highly continuous and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of pickling equipment, in particular to safe pickling equipment and method. Background Art

[0002] The number of power battery recycling and processing in my country has increased year by year, which has also exposed safety issues in the process of power battery recycling. In the recycling of power battery positive electrode materials, in order to better separate the positive electrode powder from the aluminum foil, the positive electrode sheets are usually crushed first. In order to further separate the positive electrode powder, the surface of the aluminum foil is corroded and oxidized by acid washing to achieve the maximum recovery of the positive electrode material.

[0003] The traditional pickling process for aluminum slag is to directly put the pretreated aluminum slag into the pickling tank and stir it so that the aluminum slag can fully react with the acid water. The pickling of the aluminum slag is then completed through processes such as water washing and dehydration. During the entire process, the flammable gas generated by the chemical reaction is not effectively collected. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a safe pickling equipment and method that can eliminate environmental pollution and the risk of explosion caused by the gases generated by the reaction, thereby achieving a green, environmentally friendly, safe, low-energy, and pollution-free production process.

[0005] The safety pickling equipment according to the first embodiment of the present invention includes:

[0006] A protective cover is connected to a gas purifier, wherein a pickling tank, a water washing tank and a dehydration tank are provided in the protective cover, wherein the pickling tank, the water washing tank and the dehydration tank are each provided with a rotating bracket, the pickling tank and the water washing tank are further provided with a water inlet and a water outlet, and the dehydration tank is provided with a drain outlet;

[0007] A sieve barrel is used to load materials to be washed, and the wall of the sieve barrel is in the shape of a sieve mesh;

[0008] A grabbing and conveying system is provided in the protective cover, wherein the grabbing and conveying system includes a grabbing assembly, and the grabbing assembly can grab the sieve bucket and convey it;

[0009] The drying device comprises a feed pipe, which is connected to the protective cover.

[0010] The safe pickling equipment according to the embodiment of the present invention has at least the following beneficial effects:

[0011] 1. The present invention solves the current situation of manual loading, transporting and unloading, and the stations are compact and occupy little space, which greatly reduces the energy consumption of transfer between stations, improves production and processing efficiency, and reduces production costs;

[0012] 2. Compared with the traditional acid decomposition method, the present invention adopts a combination of a screen bucket and a grabbing and conveying system to carry out the pickling operation of aluminum slag, making the whole process more continuous and efficient;

[0013] 3. The present invention is provided with a protective cover and a gas purifier, which eliminates the environmental pollution and explosion risks caused by the gases generated by the reaction, and realizes the green, environmentally friendly, safe, low-consumption and pollution-free nature of the entire production process.

[0014] According to some embodiments of the present invention, a loading mechanism is further included, which is located below the protective cover. The loading mechanism includes a conveyor belt and a lifting platform. A hole is provided at the bottom of the protective cover. The sieve barrel can reach the lifting platform along the conveyor belt and be lifted by the lifting platform until it passes through the hole and enters the protective cover.

[0015] According to some embodiments of the present invention, the grasping and conveying system further comprises a track truss, the grasping assembly comprises a telescopic mechanism, a slider and a gripper sequentially connected from top to bottom, and the grasping assembly moves along the track truss via the slider.

[0016] According to some embodiments of the present invention, the gripper includes a fixed frame, a push rod, a fixed claw and more than three movable claws, the movable claws are distributed along the circumference of the fixed frame, the push rod is connected to the fixed claw, the fixed claw is located below the fixed frame, the fixed claw is provided with an inclined long strip hole, the movable claw consists of a connecting rod section and a grabbing section, the angle between the connecting rod section and the grabbing section is an obtuse angle, the end of the grabbing section is hook-shaped, the end of the connecting rod section is hinged to the fixed frame, a hinge shaft is provided at the corner between the connecting rod section and the grabbing section, the hinge shaft can slide in the long strip hole, the push rod pushes the fixed claw downward to make the movable claw rotate inward, and a circular ring is provided on the top of the screen barrel along the circumference, and the movable claw can hook the circular ring.

[0017] According to some embodiments of the present invention, a circulating liquid tank is further included, and the water outlets of the pickling tank and the water washing tank are respectively connected to circulating water pipes, and the circulating water pipes are in communication with the circulating liquid tank.

[0018] According to some embodiments of the present invention, the bottom of the sieve barrel is provided with an openable and closable lower cover; the inner wall of the sieve barrel is provided with a protruding dial plate; and the bottom of the sieve barrel is provided with a chamfer.

[0019] According to some embodiments of the present invention, a groove is provided on the inner bottom of the rotating bracket, and a protruding block is provided on the outer bottom of the sieve barrel. The rotating bracket drives the sieve barrel to rotate through the cooperation between the groove and the block.

[0020] According to some embodiments of the present invention, the drying device also includes a spiral conveying mechanism, a blast chamber and a discharge pipe, the feed port of the spiral conveying mechanism is connected to the lower end of the feed pipe, the blast chamber is connected to the discharge port of the spiral conveying mechanism, the blast chamber is provided with a fan, the discharge pipe is connected to the lower end of the blast chamber, and the discharge pipe is provided with a heater.

[0021] The present invention also provides a safe pickling method, which uses the safe pickling equipment and comprises the following steps:

[0022] S1. The screen bucket containing the material to be washed is sent to the protective cover;

[0023] S2. The screen barrel is repeatedly grabbed and transported by the grabbing and conveying system. The screen barrel passes through the pickling tank, washing tank and dehydration tank in sequence, and the pickling, washing and dehydration processes are performed respectively;

[0024] S3. The grabbing and conveying system pours the dehydrated material into the drying device for drying.

[0025] According to some embodiments of the present invention, the pickling, water washing and dehydration processes performed in step S2 are all completed under the negative pressure state generated by the gas purifier.

[0026] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0028] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0029] Figure 2 It is an orthographic projection view of an embodiment of the present invention;

[0030] Figure 3 Schematic diagram of the internal structure of the pickling tank, water washing tank and dehydration tank of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the screen barrel of the present invention;

[0032] Figure 5 It is a structural diagram of the grabbing assembly of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the rotating bracket of the present invention.

[0034] Reference numerals: protective cover 100, gas purifier 200, pickling tank 300, washing tank 400, dewatering tank 500, drain outlet 510, rotating bracket 600, groove 610, baffle 620, water inlet 700, water outlet 800, screen barrel 900, ring 910, lower cover 920, paddle plate 930, chamfer 940, block 950, grab assembly 1010, telescopic mechanism 1011, slider 1012, track truss 1020, gripper 1030, fixed frame 10 31. Push rod 1032, fixed claw 1033, movable claw 1034, connecting rod section 1035, grabbing section 1036, hinge shaft 1037, elongated hole 1038, drying device 1100, feeding pipe 1110, spiral conveying mechanism 1120, blast chamber 1130, fan 1131, discharge pipe 1140, heater 1150, loading mechanism 1200, conveyor belt 1210, lifting platform 1220, circulating liquid tank 1300, circulating water pipe 1400, storage tank 1500. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0036] Reference Figure 1-3 , an aluminum slag safe pickling equipment, comprising:

[0037] The protective cover 100 is connected to the gas purifier 200. The protective cover 100 is provided with a pickling tank 300, a water washing tank 400 and a dehydration tank 500. The pickling tank 300, the water washing tank 400 and the dehydration tank 500 are each provided with a rotating bracket 600. The rotating bracket 600 is driven by a motor below. The pickling tank 300 and the water washing tank 400 are also provided with a water inlet 700 and a water outlet 800. The dehydration tank 500 is provided with a drain outlet 510.

[0038] The sieve barrel 900 is used to load the aluminum slag to be washed, and the wall of the sieve barrel 900 is in the shape of a sieve mesh;

[0039] The grabbing and conveying system is provided in the protective cover 100 and includes a grabbing assembly 1010 that can grab the sieve bucket 900 and transport it to the target location;

[0040] The drying device 1100 includes a feed pipe 1110 , which is connected to the protective cover 100 .

[0041] Working process:

[0042] S1. The sieve barrel 900 filled with aluminum slag to be washed is sent to the protective cover 100;

[0043] S2. The grabbing and conveying system grabs and transports the sieve barrel 900 multiple times, and the sieve barrel 900 passes through the pickling tank 300, the washing tank 400 and the dehydration tank 500 in sequence, and performs pickling, washing and dehydration processes respectively. The acid flows into the water inlet 700 of the pickling tank 300, and the sieve barrel 900 is placed on the rotating bracket 600. The rotating bracket 600 drives the sieve barrel 900 to rotate, and the aluminum slag is continuously turned in the acid solution and fully reacts. After a certain reaction time, the rotating bracket 600 stops rotating, and the grabbing and conveying system grabs the sieve barrel 900 and transfers it to the washing tank 400. The working process of the washing tank 400 and the dehydration tank 500 is the same as that of the pickling tank 300, except that the washing liquid of the dehydration tank 500 is different. The dehydration tank 500 is not immersed in the liquid during the working process. Driven by the motor, the sieve barrel 900 rotates rapidly to achieve dehydration of the aluminum slag;

[0044] S3 grab the conveyor system to pour the dehydrated aluminum slag into the drying device 1100 for drying, and the aluminum slag is finally collected in the storage tank 1500;

[0045] The above processes are all completed under the negative pressure state generated by the gas purifier 200. Since the pickling tank 300 and the water washing tank 400 of the aluminum slag are both arranged in the protective cover 100, the gases generated during the pickling reaction process and the water washing process can be purified by the gas purifier 200.

[0046] According to some embodiments of the present invention, a loading mechanism 1200 is further included, which is located below the protective cover 100. The loading mechanism 1200 includes a conveyor belt 1210 and a lifting platform 1220. A hole is provided at the bottom of the protective cover 100. The sieve barrel 900 can reach the lifting platform 1220 with the conveyor belt 1210 and be lifted with the lifting platform 1220 until it passes through the hole and enters the protective cover 100. The loading mechanism 1200 can solve the problem of slow efficiency of manual loading.

[0047] According to some embodiments of the present invention, referring to Figure 5 The grabbing and conveying system also includes a track truss 1020. The grabbing assembly 1010 includes a telescopic mechanism 1011, a slider 1012, and a gripper 1030, which are connected in sequence from top to bottom. The grabbing assembly 1010 moves along the track truss 1020 via the slider 1012. The slider 1012 provides basic support for the entire grabbing assembly 1010 to move on the track truss 1020. The telescopic mechanism 1011 provides the lifting power for the gripper 1030, which then completes the picking up and placing of the sieve bucket 900.

[0048] According to some embodiments of the present invention, the gripper 1030 includes a fixed frame 1031, a push rod 1032, a fixed claw 1033 and three or more movable claws 1034, the movable claws 1034 are distributed along the circumference of the fixed frame 1031, the push rod 1032 is connected to the fixed claw 1033, the fixed claw 1033 is located below the fixed frame 1031, and an inclined long hole 1038 is provided on the fixed claw 1033. The movable claw 1034 is composed of a connecting rod section 1035 and a grabbing section 1036. The connecting rod section 1035 The angle with the grabbing section 1036 is an obtuse angle, the end of the grabbing section 1036 is hook-shaped, the end of the connecting rod section 1035 is hinged to the fixed frame 1031, and a hinge shaft 1037 is provided at the corner between the connecting rod section 1035 and the grabbing section 1036. The hinge shaft 1037 can slide in the long hole 1038, and the push rod 1032 pushes the fixed claw 1033 downward to make the movable claw 1034 rotate inward. A circular ring 910 is provided on the top of the screen barrel 900 along the circumference, and the movable claw 1034 can hook the circular ring 910. First, move the gripper 1030 downward through the telescopic mechanism 1011. When the fixed claw 1033 is lowered to the sieve barrel 900, the push rod 1032 is driven to move downward, thereby pushing the fixed claw 1033 to move downward. Under the action of the long hole 1038, the movable claw 1034 rotates toward the center of the gripper 1030. Since the grabbing section 1036 of the movable claw 1034 is hook-shaped, even if it only rotates a little, it is enough to hook the ring 910 of the sieve barrel 900, and then the telescopic mechanism 1011 is pulled up to complete the extraction of the sieve barrel 900. Similarly, when the sieve barrel 900 needs to be lowered, the gripper 1030 is first lowered to the specified position, and the push rod 1032 moves upward, pulling the fixed claw 1033 upward, and the movable claw 1034 rotates in the opposite direction, disengaging from the ring 910, releasing the sieve barrel 900. This structure is a structural coordination of the gripper 1030 and the sieve barrel 900. Only a small driving force is required to realize the taking and placing of the sieve barrel 900, and the clamping is firm, and the sieve barrel 900 is not easy to fall off.

[0049] According to some embodiments of the present invention, a circulating liquid tank 1300 is further included. The water outlets 800 of the pickling tank 300 and the water washing tank 400 are respectively connected to circulating water pipes 1400, and the circulating water pipes 1400 are in communication with the circulating liquid tank 1300. After multiple washings, the washing liquid in the pickling tank 300 and the water washing tank 400 is discharged from their respective water outlets 800 through the circulating water pipes 1400 into the circulating liquid tank 1300. After the liquid is circulated, it flows again into the pickling tank 300 and the water washing tank 400 through the water inlet 700.

[0050] According to some embodiments of the present invention, referring to Figure 4The bottom of the sieve barrel 900 is provided with an openable and closable lower cover 920. When it is necessary to unload the material into the drying device 1100, the unloading can be completed by opening the lower cover 920; the inner wall of the sieve barrel 900 is provided with a protruding dial plate 930, which can improve the stirring efficiency and fully react; the bottom edge of the sieve barrel 900 is chamfered 940. When the sieve barrel 900 is slowly lowered, the chamfer 940 allows the sieve barrel 900 to slide well into the rotating tray.

[0051] According to some embodiments of the present invention, a groove 610 is provided on the inner bottom of the rotating bracket 600, and a protruding block 950 is provided on the outer bottom of the sieve barrel 900. The rotating bracket 600 drives the sieve barrel 900 to rotate through the cooperation between the groove 610 and the block 950. Figure 6 The groove at the bottom of the rotating bracket 600 is divided into two semicircular annular grooves by two baffles 620 arranged horizontally in the circular groove. The number of baffles 620 is not limited to two. The function of the baffle 620 is to divide the circular groove into several annular grooves. As long as the block 950 is inserted into the annular groove, when the rotating bracket 600 rotates, the baffle 620 will resist and push the block 950, thereby driving the screen barrel 900 to rotate.

[0052] According to some embodiments of the present invention, the drying device 1100 also includes a spiral conveying mechanism 1120, a blast chamber 1130 and a discharge pipe 1140, the feed port of the spiral conveying mechanism 1120 is connected to the lower end of the feed pipe 1110, the blast chamber 1130 is connected to the discharge port of the spiral conveying mechanism 1120, the blast chamber 1130 is provided with a fan 1131, the discharge pipe 1140 is connected to the lower end of the blast chamber 1130, and the discharge pipe 1140 is provided with a heater 1150. The dehydrated aluminum slag, driven by the grabbing and conveying system, reaches directly above the feed pipe 1110. At this point, the lower cover 920 of the sieve barrel 900 is opened, and the aluminum slag falls into the feed pipe 1110. The screw conveying mechanism 1120 includes a motor and a feed screw. The motor drives the feed screw to rotate, slowly conveying the aluminum slag in small quantities to the blast chamber 1130. Under the action of gravity, the aluminum slag moves downward. The wind blows the aluminum slag in the blast chamber 1130, and then falls into the discharge pipe 1140. The aluminum slag, finally dried by the heater 1150, falls into the storage tank 1500. The drying device 1100 uses a combination of air drying and drying to dry the dehydrated aluminum slag, greatly reducing the moisture content of the aluminum slag and ensuring its storage safety.

[0053] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A safe pickling equipment, characterized in that: include: A protective cover is connected to a gas purifier, wherein a pickling tank, a water washing tank and a dehydration tank are provided in the protective cover, wherein the pickling tank, the water washing tank and the dehydration tank are each provided with a rotating bracket, the pickling tank and the water washing tank are further provided with a water inlet and a water outlet, and the dehydration tank is provided with a drain outlet; A sieve barrel is used to load materials to be washed, and the wall of the sieve barrel is in the shape of a sieve mesh; A grabbing and conveying system is provided in the protective cover, wherein the grabbing and conveying system includes a grabbing assembly, and the grabbing assembly can grab the sieve bucket and convey it; A drying device, comprising a feed pipe, wherein the feed pipe is in communication with the protective cover; The bottom of the sieve barrel is provided with an openable and closable lower cover; The drying device further includes a spiral conveying mechanism, a blast chamber, and a discharge pipe. The feed port of the spiral conveying mechanism is connected to the lower end of the feed pipe, the blast chamber is connected to the discharge port of the spiral conveying mechanism, the blast chamber is provided with a fan, the discharge pipe is connected to the lower end of the blast chamber, and the discharge pipe is provided with a heater. The screw conveying mechanism includes a motor and a feeding screw; It also includes a loading mechanism, which is located below the protective cover. The loading mechanism includes a conveyor belt and a lifting platform. A hole is provided at the bottom of the protective cover. The screen barrel can reach the lifting platform along the conveyor belt and be lifted along with the lifting platform until it passes through the hole and enters the protective cover.

2. The safe pickling equipment according to claim 1, characterized in that: The grabbing and conveying system further comprises a track truss, and the grabbing assembly comprises a telescopic mechanism, a slider and a gripper which are sequentially connected from top to bottom, and the grabbing assembly moves along the track truss via the slider.

3. The safe pickling equipment according to claim 2, characterized in that: The gripper includes a fixed frame, a push rod, a fixed claw and more than three movable claws, the movable claws are distributed along the circumference of the fixed frame, the push rod is connected to the fixed claw, the fixed claw is located below the fixed frame, an inclined long hole is provided on the fixed claw, the movable claw consists of a connecting rod section and a grabbing section, the angle between the connecting rod section and the grabbing section is an obtuse angle, the end of the grabbing section is hook-shaped, the end of the connecting rod section is hinged to the fixed frame, a hinge shaft is provided at the corner between the connecting rod section and the grabbing section, the hinge shaft can slide in the long hole, the push rod pushes the fixed claw downward to make the movable claw rotate inward, and a circular ring is provided on the top of the screen barrel along the circumference, and the movable claw can hook the circular ring.

4. The safe pickling equipment according to claim 1, characterized in that: It also includes a circulating liquid tank, and the water outlets of the pickling tank and the water washing tank are respectively connected to circulating water pipes, and the circulating water pipes are communicated with the circulating liquid tank.

5. The safe pickling equipment according to claim 1, characterized in that: The inner wall of the sieve barrel is provided with a protruding dial plate; and the bottom of the sieve barrel is provided with a chamfer.

6. The safe pickling equipment according to claim 1, characterized in that: The inner bottom of the rotating bracket is provided with a groove, and the outer bottom of the sieve barrel is provided with a protruding block. The rotating bracket drives the sieve barrel to rotate through the cooperation between the groove and the block.

7. A safe pickling method, characterized in that: The safe pickling method uses the safe pickling equipment according to any one of claims 1 to 6, and the safe pickling method comprises the following steps: S1. The screen bucket containing the material to be washed is sent to the protective cover; S2. The screen barrel is repeatedly grabbed and transported by the grabbing and conveying system. The screen barrel passes through the pickling tank, washing tank and dehydration tank in sequence, and the pickling, washing and dehydration processes are performed respectively; S3. The grabbing and conveying system pours the dehydrated material into the drying device for drying.

8. The safe pickling method according to claim 7, characterized in that: The pickling, water washing and dehydration processes in step S2 are all completed under the negative pressure state generated by the gas purifier.

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