Heavy metal leachate circulating purification device

Abstract

The application discloses a heavy metal leachate circulating purification device and relates to the technical field of leachate purification.The device comprises a tank body, which is used for temporarily storing heavy metal leachate, and a taking opening is formed in the tank body; a cover mechanism, which is used for moving the cover of the taking opening; a heating mechanism, which is used for heating the liquid in the tank body; a lifting mechanism, which is provided with a cover plate and is used for moving the cover plate to cover the top opening of the tank body; and an aeration mechanism, which is used for supplying gas and liquid to the tank body. The device can repeatedly lift and stir the agitator, improves the stirring effect, repeatedly lifts and aerates, facilitates flushing of the tank body, facilitates heating treatment of the leachate, facilitates treatment of the precipitate in the tank body, the cover plate has multiple opening modes, and can meet multiple working environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of leachate purification, in particular to a heavy metal leachate circulating purification device. BACKGROUND

[0002] Mining leachate refers to a kind of aqueous solution formed by water and chemical solution in ore during underground or open-pit mining process. The composition of mining leachate is very complex, which contains a large amount of heavy metals, toxic and harmful substances such as copper, lead, zinc, cadmium, etc., causing great pollution to the environment and ecology.

[0003] According to the composition characteristics of mining leachate, there are currently two main treatment methods: chemical method and biological method.

[0004] 1. Chemical method; the chemical method mainly generates precipitates by adding chemical reagents to react with the pollutants in the leachate, so as to achieve the purpose of filtration separation or adsorption separation, and is mainly applied to the treatment of heavy metals, organic matter and suspended particles. Different chemical reagents are used, mainly including neutralization reaction, oxidation reaction, precipitation reaction, etc. For example, lime neutralization method, infrared oxidation method, sulfide precipitation method, etc.

[0005] 2. Biological method; the biological method usually uses microorganisms to adsorb, degrade and transform pollutants through chemical reactions. The characteristics of this method are: safe, low cost, green and environmentally friendly. Common microbial treatment methods include anaerobic reaction, aerobic reaction and acidophilic bacteria reaction. The biological method has been successfully used to treat wastewater containing copper, lead, zinc and other heavy metals, and the treatment effect is relatively good.

[0006] In the existing leachate treatment technology, there are some problems to be solved, for example, the stirring and aeration cannot be repeated during the purification process, which not only affects the treatment efficiency, but also may cause unstable treatment effect. At the same time, it is inconvenient to flush the tank and handle the precipitates in the tank, which further increases the difficulty and cost of treatment. In addition, the opening mode of the taking door is single, which also limits the flexibility and convenience of operation. Therefore, we propose a heavy metal leachate circulating purification device, which aims to solve the above problems through technical innovation and improve the efficiency and quality of leachate treatment. SUMMARY

[0007] The purpose of the present application is to provide a heavy metal leachate circulating purification device to solve the problems raised in the background art.

[0008] To achieve the above purpose, the present application provides the following technical scheme:

[0009] The heavy metal leachate circulating purification device comprises:

[0010] A tank body for temporarily storing heavy metal leachate, the tank body being provided with a taking opening;

[0011] A cover mechanism for covering the taking opening;

[0012] A heating mechanism for heating the liquid in the tank body;

[0013] A lifting mechanism provided with a cover plate and used for moving the cover plate to cover the top opening of the tank body;

[0014] An aeration mechanism for supplying gas and liquid to the tank body;

[0015] The tank body is provided with a taking opening on the bottom side wall, a cover mechanism is arranged on one side of the taking opening, a heating mechanism is arranged on the bottom of the tank body, an aeration mechanism is arranged above the heating mechanism, the aeration mechanism is fixedly connected with a cover plate, a stirrer and a feeding pipe are arranged on the cover plate.

[0016] Further, the aeration mechanism comprises a through pipe fixedly penetrating the cover plate, a valve body is connected to the top of the through pipe, a hose is connected to the free end of the valve body, a fixing seat is connected to the bottom of the through pipe, a spray head is fixedly penetrated in the fixing seat, and the fixing seat is used for connecting the through pipe and the spray head.

[0017] Further, the heating mechanism comprises a carrier movably arranged on the bottom of the tank body, a telescopic rod one is arranged on the carrier, a bracket is connected to the extending end of the telescopic rod one and used for pushing the bracket to move up and down, a heating plate for heating the liquid is arranged on the bracket, and the top of the bracket is movably connected with a top plate for horizontally partitioning the inside of the tank body.

[0018] Further, the cover mechanism comprises a sliding seat slidably connected to the outer wall of the tank body, a cover plate for covering the taking opening is connected to the sliding seat through a hinge, a handle for assisting in opening the cover plate is arranged on the end of the cover plate away from the sliding seat, and a bolt for limiting the opening of the cover plate is movably inserted in the handle.

[0019] Further, the lifting mechanism comprises a telescopic rod two arranged on the outer wall of the tank body, a fixing block is connected to the extending end of the telescopic rod two and used for pushing the fixing block to move up and down, and a fixing seat for mounting the cover plate is connected to the bracket.

[0020] Further, the through pipe is a rigid pipe, at least two groups of the through pipe are arranged, and the valve body is used for controlling the communication state of the hose and the through pipe.

[0021] Further, the free end of the hose is connected with a gas source, a liquid source and a water pump, the fixing seat is in a disc shape, and a cavity for connecting the through pipe and the spray head is arranged in the fixing seat.

[0022] Further, the carrier size is smaller than the inner bottom size of the tank, the carrier enters the tank through the access port, the support and the top plate are both circular ring structures, the inner circle of the support is provided with a heating plate, the support is made of high-temperature-resistant and heat-insulating material, the auxiliary equipment of the heating plate is arranged on the carrier, the outer wall of the top plate is fixedly connected with the tank, and the bottom of the top plate is provided with a sealing ring.

[0023] Further, the sliding seat is provided with two groups of symmetrically distributed on the tank, the sliding seat is used for supporting the turning and moving of the sealing plate, the sealing plate is an arc plate, the arc length of the sealing plate is less than or equal to half of the circumference of the tank bottom, the bolt is a T-shaped bolt, the handle is provided with a limiting ring for installing the bolt above the tank, and the limiting ring is used for limiting the horizontal movement of the bolt.

[0024] Further, the fixed block is used for connecting the telescopic rod two and the fixed seat, the outer diameter of the fixed seat is greater than the diameter of the tank, and the height of the fixed seat is less than or equal to the height of the nozzle.

[0025] Compared with the prior art, the present application has obvious technical advantages, not only optimizes the operation process, but also greatly improves the processing efficiency and flexibility, which is embodied in the following aspects:

[0026] 1. Innovative driving and mixing mechanism

[0027] Through the precise control of the telescopic rod two, the present application realizes the smooth upward movement of the fixed block and the fixed seat, and then drives the cover plate to rise synchronously. By skillfully utilizing the small gap between the cover plate and the tank, the present application realizes the precise injection of leachate. This design avoids the problems of liquid splashing or uneven injection that may occur in traditional methods. Then, the telescopic rod two is operated in reverse to ensure that the fixed seat and the cover plate are tightly attached to the top opening of the tank, forming a sealed environment. At this time, the treatment liquid is introduced through the feed port, and the mixer is started to mix and process. It is particularly worth mentioning that the present application allows the telescopic rod two to be repeatedly raised and lowered during mixing, driving the mixer to move up and down. This not only enhances the uniformity of liquid mixing, but also ensures the stable connection between the fixed seat and the tank, avoiding the risk of separation caused by frequent lifting and lowering, thereby significantly improving the stirring effect and efficiency.

[0028] 2. Efficient aeration and liquid discharge system

[0029] The free end of the hose is connected to a gas source, and the gas is uniformly sprayed from the nozzle by a carefully designed path-the hose, valve body, through pipe and fixed seat cavity, and finally the gas is uniformly sprayed from the nozzle to implement effective aeration treatment on the liquid in the tank. Combined with the flexible operation of the lifting mechanism, the cover plate is lifted together with the aeration mechanism to realize multi-level and multi-angle aeration of the liquid, thereby greatly enhancing the oxygenation effect of the liquid. After the treatment is completed, the discharge of the liquid is also flexible and diverse: the liquid can be naturally discharged through the liquid discharge pipe on the side wall of the tank, or the liquid can be forcibly extracted through the connection of the water pump and the hose, and the liquid is extracted through the channels such as the nozzle and the fixed seat cavity, thereby providing users with diversified choices. In addition, when the tank needs to be cleaned, the hose is only connected to the water source, and water flow can be sprayed through the nozzle to easily complete the internal cleaning, thereby greatly simplifying the maintenance process.

[0030] 3. Innovative heating and precipitation treatment

[0031] Through precise control of the driving telescopic rod one, the bracket carrying the heating plate slowly rises until it closely adheres to the top plate, forming a sealed and heat-insulated heating space. This design ensures that the added leachate, treatment liquid and other materials are all located above the heating plate, facilitating concentrated heating treatment. The heating plate not only uniformly heats the liquid in the tank, but also, when the precipitate forms a solid state, through the contraction of the telescopic rod one, the bracket and the heating plate are lowered together with the solid precipitate, and then the solid precipitate is easily removed from the tank through the movement of the carrier, thereby simplifying the treatment process of the precipitate and avoiding the cleaning problems that may be encountered in traditional methods, achieving dual optimization of leachate heating treatment and precipitate treatment.

[0032] 4. Flexible cover plate design and multi-environment adaptability

[0033] The cover plate design of the present application is also unique and ingenious, and users can easily open the cover plate and enter the tank interior by simply removing the latch and pulling the handle. In addition, the cover plate can also slide on the sliding seat along the outer wall of the tank, providing another opening method to meet the needs of different working environments. This diversified cover plate opening method not only enhances the operational convenience of the equipment, but also improves its adaptability and flexibility in various complex working environments, ensuring the wide applicability of the present application.

[0034] In summary, the technical advantages of the present application not only significantly improve work efficiency, but also enhance operational flexibility and convenience, demonstrating its significant progress and unique value in similar technologies. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a structural schematic diagram of the present application;

[0036] Figure 2 is a structural schematic diagram of the cover plate in the present application;

[0037] Figure 3 For the structure diagram of the aeration mechanism in the application;

[0038] Figure 4 For the structure diagram of the heating mechanism in the application;

[0039] Figure 5 For the structure diagram of the capping mechanism in the application;

[0040] Figure 6 For the structure diagram of the lifting mechanism in the application.

[0041] In the figure: 1, tank body; 2, take-out port; 3, capping mechanism; 4, heating mechanism; 5, cover plate; 6, lifting mechanism; 7, stirrer; 8, aeration mechanism;

[0042] 31, sliding seat; 32, sealing plate; 33, bolt; 34, handle;

[0043] 41, carrier; 42, telescopic rod one; 43, support; 44, heating plate; 45, top plate;

[0044] 61, telescopic rod two; 62, fixed block; 63, fixed seat;

[0045] 81, through pipe; 82, valve body; 83, hose; 84, fixed seat; 85, spray head. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0047] Please refer to Figures 1-6 The application provides a technical solution: a heavy metal leachate circulating purification device, comprising:

[0048] The tank body 1 is used for temporarily storing heavy metal leachate, and the tank body 1 is provided with a take-out port 2. The tank body 1 is provided with the take-out port 2 on the bottom side wall, and the tank body 1 is provided with a capping mechanism 3 on one side of the take-out port 2. The tank body 1 is provided with a heating mechanism 4 on the inner bottom of one side of the take-out port 2. The tank body 1 is provided with a liquid discharge pipe between the heating mechanism 4 and a stirrer 5. The tank body 1 is provided with an aeration mechanism 8 above the heating mechanism 4. The aeration mechanism 8 is fixedly connected to a cover plate 5. The cover plate 5 is provided with the stirrer 7 and a feed pipe.

[0049] Lifting mechanism 6, the lifting mechanism 6 is provided with a cover plate 5 and is used to move the cover plate 5 to cover the top opening of the tank 1; the lifting mechanism 6 comprises a telescopic rod two 61 provided on the outer wall of the tank 1, the telescopic rod two 61 is connected with a fixed block 62 at the extending end and is used to push the fixed block 62 to lift, the support 43 is connected with a fixing seat 63 for installing the cover plate 5, the telescopic rod two 61 and the telescopic rod one 42 are the same structure, the telescopic rod two 61 can be selected as pneumatic, hydraulic and electric telescopic rod, the fixed block 62 is used to connect the telescopic rod two 61 and the fixing seat 63, the outer diameter of the fixing seat 63 is greater than the diameter of the tank 1, the height of the fixing seat 63 is less than or equal to the height of the nozzle 85, the fixing seat 63 is similar to a convex letter-shaped bushing, the cover plate 5 is provided on the inner circle of the fixing seat 63, and the protruding part at the bottom of the fixing seat 63 is inserted into the top opening of the tank 1.

[0050] Drive telescopic rod two 62, the telescopic rod two 61 pushes the fixed block 62 and the fixing seat 63 to move upwards, the cover plate 5 moves upwards with the fixing seat 63, the percolate is poured into the tank 1 from the gap between the cover plate 5 and the tank 1, the telescopic rod two 62 is operated to make the fixing seat 63 and the cover plate 5 move downwards to cover the top opening of the tank 1, then the treatment liquid is added through the feeding port, then the stirrer 5 is driven to mix and treat the liquid in the tank 1, during mixing, the telescopic rod two 62 can be repeatedly lifted to make the stirrer 5 repeatedly lift to mix the liquid in the tank 1, during lifting and mixing, the fixing seat 63 cannot be separated from the tank 1, so that the stirrer 5 can be repeatedly lifted, and the stirring effect is improved.

[0051] Aeration mechanism 8, the aeration mechanism 8 is used for supplying gas and liquid to the tank 1, the aeration mechanism 8 comprises a through pipe 81 fixedly penetrating the cover plate 5, the through pipe 81 is connected with a valve body 82 at the top, the valve body 82 is connected with a hose 83 at the free end, the through pipe 81 is connected with a fixing seat 84 at the bottom, the fixing seat 84 is fixedly penetrated with a nozzle 85, the fixing seat 84 is used to communicate the through pipe 81 and the nozzle 85, the through pipe 81 is a rigid pipeline, the through pipe 81 is provided with at least two groups, the valve body 82 is used to control the communication state of the hose 83 and the through pipe 81, the free end of the hose 83 is connected with a gas source, a liquid source and a water pump, the hose 83 is a flexible and elastic telescopic pipe, the fixing seat 84 is a disc-shaped structure, and the fixing seat 84 is internally provided with a cavity for communicating the through pipe 81 and the nozzle 85.

[0052] The free end of the hose 83 is connected with the gas source, the gas passes through the hose 83, the valve body 82, the through pipe 81 and the cavity of the fixing seat 84, and finally is sprayed out through the nozzle 85 to aerate and treat the liquid in the tank 1, the cover plate 5 is repeatedly lifted in cooperation with the lifting mechanism 6, the aeration mechanism 8 is repeatedly lifted with the cover plate 5, so that the aeration can be repeatedly lifted.

[0053] When the liquid sedimentation is finished, the liquid can be discharged through the liquid discharge pipe on the side wall of the tank body 1, or the water pump can be used to pump water. The water pump is connected to the hose 83, and the liquid is discharged through the nozzle 85, the cavity of the fixed seat 84, the pipe 81, the valve body 82 and the hose. The way to discharge the liquid in the tank body 1 can be selected;

[0054] When the sediment in the tank body 1 is processed, the free end of the hose 83 is connected to a water source. The water flows through the hose 83, the valve body 82, the pipe 81 and the cavity of the fixed seat 84, and finally flows out of the nozzle 85 to flush the tank body 1, which facilitates the flushing of the tank body 1.

[0055] The heating mechanism 4 is used to heat the liquid in the tank body 1. The heating mechanism 4 includes a carrier 41 movably arranged on the bottom of the tank body 1. The carrier 41 is provided with a telescopic rod 42. The telescopic rod 42 is connected to a bracket 43 at the extending end and is used to push the bracket 43 up and down. The bracket 43 is provided with a heating plate 44 for heating the liquid. The bracket 43 is movably attached to the top plate 45 to horizontally divide the inside of the tank body 1. The size of the carrier 41 is smaller than that of the bottom of the tank body 1. The carrier 41 enters the tank body 1 through the taking opening 2. The bracket 43 and the top plate 45 are both circular ring structures. The bracket 43 is provided with the heating plate 44 on the inner ring. The bracket 43 is made of high-temperature-resistant and heat-insulating material. The auxiliary equipment of the heating plate 44 is arranged on the carrier 41. The outer wall of the top plate 45 is fixedly connected to the inside of the tank body 1. The bottom of the top plate 45 is provided with a sealing ring.

[0056] The telescopic rod 42 is driven to push the bracket 43 upwards. The heating plate 44 moves upwards with the bracket 43. When the top of the bracket 43 is attached to the top plate 45 without gap, the telescopic rod 42 is stopped. The bracket 43, the heating plate 44 and the top plate 45 divide the tank body 1. The leachate, the treatment liquid and other additives are all retained above the heating plate 44. Then the heating plate 44 is driven to heat the liquid in the tank body 1. When only the sediment remains in the tank body 1, the sediment can be heated to solid state. Then the telescopic rod 42 is retracted, and the bracket 43 and the heating plate 44 are moved downwards. The solid sediment on the bracket 43 and the heating plate 44 moves downwards with them. Then the carrier 41 is moved to move out of the tank body 1 through the taking opening 2. The solid sediment on the bracket 43 and the heating plate 44 is taken out, which facilitates the heating treatment of the leachate, the treatment of the sediment in the tank body 1 and the cleaning of the tank body 1.

[0057] The cover mechanism 3 is used for moving the cover taking opening 2, the cover mechanism 3 comprises a sliding seat 31 slidably clamped on the outer wall of the tank body 1, a cover plate 32 for the cover taking opening 2 is connected to the sliding seat 31 through a hinge, a handle 34 for assisting opening of the cover plate 32 is arranged on the end of the cover plate 32 away from the sliding seat 31, a bolt 33 for limiting opening of the cover plate 32 is movably inserted on the handle 34, the sliding seat 31 is provided with two groups of symmetrical distribution on the tank body 1, and the sliding seat 31 is used for supporting the cover plate 32 to turn over and move, the cover plate 32 is an arc-shaped plate, the arc length of the cover plate 32 is less than or equal to half of the circumference of the bottom surface of the tank body 1, the bolt 33 is a T-shaped bolt, and a limiting ring for mounting the bolt 33 is arranged above the handle 34 on the tank body 1, and the limiting ring is used for limiting horizontal movement of the bolt 33.

[0058] The bolt 33 is taken out, the handle 34 is pulled, the cover plate 34 is rotated on the sliding seat 31 by pulling the handle 34, the cover plate 34 is opened, the cover plate 34 can also be opened by pushing the cover plate 34 to one side of the sliding seat 31, the cover plate 34 is moved along the outer wall of the tank body 1 through the sliding seat 31, the cover plate 34 is opened, and then the tank body 1 can be accessed through the taking opening 2, and the cover plate 34 has a plurality of opening modes, so that a plurality of working environments can be met.

[0059] The technical principle of the present application is as follows:

[0060] The core of the present application is that the driving and mixing system is ingeniously designed, and the flexible aeration, liquid discharge, cleaning and heating treatment process is provided, firstly, through the accurate action of the driving telescopic rod two 62, the telescopic rod one 61 serves as a direct power source, pushes the fixed block 62 and the fixed seat 63 below the fixed block 62 to stably move upwards, in this process, the cover plate 5 closely connected with the fixed seat 63 also rises, the cover plate 5 and the tank body 1 are ingeniously utilized to realize accurate injection of the leachate, once the leachate is injected, the fixed seat 63 and the cover plate 5 are synchronously moved downwards through reverse operation of the telescopic rod two 62, the opening at the top of the tank body 1 is tightly sealed, and the sealing property in the treatment process is ensured.

[0061] Subsequently, the treatment liquid is slowly added through the feed inlet at the top of the tank body, at this time, the stirrer 5 is started, and the strong power generated by the rotation of the stirrer 5 is used for high-efficiency mixing treatment of the liquid in the tank body 1. In order to further improve the mixing effect, the system can repeatedly lift and lower the telescopic rod two 62, and drive the stirrer 5 to move up and down in the tank body, this dynamic mixing mode not only enhances the uniformity of the liquid, but also ensures that the fixed seat 63 always maintains stable connection with the tank body 1 in the lifting and lowering process of the stirrer 5, avoids any possible separation, and thus improves the stability and efficiency of the whole stirring process.

[0062] The aeration mechanism also plays an important role in the mixing process; after connecting the free end of the hose 83 to the gas source, the gas passes through the hose 83, the valve body 82, the pipe 81, and finally enters the cavity of the fixed seat 84, and is uniformly sprayed out of the nozzle 85, thereby fully aerating the liquid in the tank 1. In order to enhance the aeration effect, the lifting mechanism 6 is used again to drive the cover plate 5 and the aeration mechanism 8 connected thereto to repeatedly rise and fall, which not only increases the contact area between the gas and the liquid, but also promotes the oxidation reaction of the liquid and accelerates the treatment process.

[0063] When the liquid is treated to the stage where it needs to be precipitated, the treated liquid can be directly discharged through the liquid discharge pipe on the side wall of the tank 1, or the water pump can be connected to the hose 83 to extract the liquid through the nozzle 85 in the opposite direction, and then discharged through the fixed seat 84 cavity, the pipe 81, the valve body 82, and the hose, providing flexible liquid discharge options.

[0064] After the precipitate in the tank is treated, the cleaning process is also simple and efficient. The hose 83 is connected to the water source, and the clean water flows into the tank along the same path, is uniformly sprayed through the nozzle 85, and fully flushes the inside of the tank, ensuring the cleanliness and hygiene of the equipment.

[0065] In addition, the heating treatment system of the present application is also very innovative. By driving the telescopic rod one 42, the bracket 43 and the heating plate 44 thereon are pushed upwards until the top of the bracket 43 tightly abuts against the top plate 45, forming a temporary isolation space. In this space, the leachate, treatment liquid and other additives added are effectively isolated, and then the heating plate 44 is started to heat and treat the liquid. In particular, when only the precipitate remains in the tank, heating can convert the precipitate into a solid state, facilitating subsequent treatment. By retracting the telescopic rod one 42, the bracket 43 and the heating plate 44 are lowered together with the solid precipitate, and finally removed from the tank through the moving carrier 41 from the access opening 2, achieving convenient treatment of the precipitate.

[0066] Finally, the design of the sealing plate 34 fully considers the flexibility of actual operation. Whether it is opened by rotating the handle 34 on the sliding seat 31 or pushed to one side to make the sealing plate 34 slide open along the outer wall of the tank, it provides users with multiple options to adapt to the needs of different working environments, ensuring the wide applicability and operational convenience of the equipment.

[0067] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A heavy metal leachate circulation purification device, characterized in that, include: Tank (1), the tank (1) is used to temporarily store heavy metal leachate, and the tank (1) is provided with a retrieval port (2). A capping mechanism (3) is used to move the capping opening (2); Heating mechanism (4), the heating mechanism (4) is used to heat the liquid in the tank (1); A lifting mechanism (6) is provided with a cover plate (5) and is used to move the cover plate (5) to seal the top opening of the tank body (1); Aeration mechanism (8) is used to supply air and liquid to the tank (1); The tank (1) has a retrieval port (2) on its bottom side wall. A sealing mechanism (3) is provided on one side of the tank (1) with the retrieval port (2). A heating mechanism (4) is provided at the bottom of the tank (1) on one side of the retrieval port (2). An aeration mechanism (8) is provided above the heating mechanism (4). The aeration mechanism (8) is fixedly connected to a cover plate (5). A stirrer (7) and a feed pipe are provided on the cover plate (5). The heating mechanism (4) includes a carrier (41) that is movable on the bottom of the tank (1). The carrier (41) is provided with a telescopic rod (42). The extended end of the telescopic rod (42) is connected to a bracket (43) and is used to push the bracket (43) up and down. The bracket (43) is provided with a heating plate (44) for heating liquid. The top of the bracket (43) moves to fit against the top plate (45) to laterally divide the inside of the tank (1). The sealing mechanism (3) includes a sliding seat (31) that is slidably engaged with the outer wall of the tank (1). A sealing plate (32) for sealing the opening (2) is connected to the sliding seat (31) by a hinge. A handle (34) for assisting in opening the sealing plate (32) is provided on the end of the sealing plate (32) away from the sliding seat (31). A pin (33) for restricting the opening of the sealing plate (32) is movably inserted into the handle (34). The carrier (41) is smaller than the bottom size of the tank (1). The carrier (41) enters the tank (1) through the retrieval port (2). The bracket (43) and the top plate (45) are both circular structures. The inner ring of the bracket (43) is provided with a heating plate (44). The bracket (43) is made of high temperature resistant heat insulation material. The auxiliary working equipment of the heating plate (44) is set on the carrier (41). The outer wall of the top plate (45) is fixedly connected to the tank (1). The bottom of the top plate (45) is provided with a sealing ring. The sliding seat (31) has two sets symmetrically distributed on the tank body (1). The sliding seat (31) is used to support the flipping and movement of the sealing plate (32). The sealing plate (32) is an arc plate. The arc length of the sealing plate (32) is less than or equal to half of the circumference of the bottom surface of the tank body (1). The pin (33) is a T-shaped pin. The tank body (1) above the handle (34) is provided with a limiting ring for installing the pin (33). The limiting ring is used to restrict the horizontal movement of the pin (33).

2. The heavy metal leachate circulation purification device according to claim 1, characterized in that: The aeration mechanism (8) includes a through pipe (81) that is fixedly connected to the cover plate (5). A valve body (82) is connected to the top of the through pipe (81). A hose (83) is connected to the free end of the valve body (82). A fixing seat (84) is connected to the bottom of the through pipe (81). A nozzle (85) is fixedly connected to the fixing seat (84). The fixing seat (84) is used to connect the through pipe (81) and the nozzle (85).

3. The heavy metal leachate circulation purification device according to claim 1, characterized in that: The lifting mechanism (6) includes a telescopic rod two (61) provided on the outer wall of the tank (1). The extended end of the telescopic rod two (61) is connected to a fixed block (62) and is used to push the fixed block (62) to lift. The bracket (43) is connected to a fixed seat (63) for installing the cover plate (5).

4. The heavy metal leachate circulation purification device according to claim 2, characterized in that: The connecting pipe (81) is a rigid pipe, and there are at least two sets of connecting pipes (81). The valve body (82) is used to control the connection state between the hose (83) and the connecting pipe (81).

5. The heavy metal leachate circulation purification device according to claim 2, characterized in that: The hose (83) is a flexible and elastic telescopic tube, and the fixing seat (84) is a disc-shaped structure. The fixing seat (84) has a cavity inside for connecting the through pipe (81) and the nozzle (85).

6. The heavy metal leachate circulation purification device according to claim 3, characterized in that: The fixing block (62) is used to connect the telescopic rod (61) and the fixing seat (63). The outer diameter of the fixing seat (63) is greater than the diameter of the tank (1), and the height of the fixing seat (63) is less than or equal to the height of the nozzle (85).

Images