A precious metal wastewater separation and extraction device

Abstract

The utility model discloses a kind of precious metal wastewater separation extraction devices, it is related to precious metal wastewater recycling technical field, including support base, wastewater collection unit and fixed assembly unit, support base upside is provided with a fixed shell, the fixed shell left and right sides are provided with fixed assembly unit respectively, the support base lower side four corners are provided with supporting leg, the fixed shell front side is provided with access hole, wastewater collection unit includes sealing plate, connecting rod, electric push rod and filter screen, the fixed shell upside surface is provided with a round hole, the fixed shell upside is provided with cavity, reduce the pollution caused to environment by precious metal wastewater, increase the extraction efficiency of precious metal, compared with the mixture of precious metal extraction agent, even, reduce the extraction cost of precious metal wastewater water separation, reduce the time in advance.

Description

Technical Field

[0001] This utility model relates to the field of precious metal wastewater recycling technology, specifically a precious metal wastewater separation and extraction device. Background Technology

[0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged during industrial production processes such as mining, metallurgy, machinery manufacturing, chemical engineering, electronics, and instrumentation. Heavy metal wastewater (containing elements such as cadmium, nickel, mercury, and zinc) is one of the most serious forms of industrial wastewater pollution and poses the greatest threat to human health. Its quality and quantity are related to the production process. Heavy metals in wastewater generally cannot be decomposed or destroyed; they can only be relocated or their physical and chemical forms changed. Treatment methods include first reforming production processes to reduce or eliminate the use of highly toxic heavy metals, and then treating the wastewater on-site (e.g., not discharging it from the production workshop). Common methods include chemical precipitation and ion exchange. After treatment, if the heavy metal content in the water is below discharge standards, it can be discharged or reused. New concentrated heavy metal products should be recovered and reused or subjected to harmless treatment as much as possible.

[0003] Heavy metals in wastewater can be removed through two main methods: First, dissolved heavy metals are transformed into insoluble heavy metal compounds or elements and removed through precipitation and flotation. These methods include neutralization precipitation, sulfide precipitation, flotation separation, ion flotation, electrolytic precipitation or electrolytic flotation, and membrane electrolysis. Second, heavy metals in wastewater can be concentrated and separated without altering their chemical form. Methods include reverse osmosis, electrodialysis, evaporation, and ion exchange. The first method, particularly neutralization precipitation, sulfide precipitation, and electrolytic precipitation, is the most widely used. From the perspective of heavy metal wastewater reuse, the second method is superior to the first because it concentrates the heavy metals in their original state without adding any chemical reagents, allowing for direct reuse in the production process. In contrast, the first method requires multiple chemical reagents and multiple chemical transformations before the heavy metals can be recovered.

[0004] Existing precious metal wastewater separation and extraction devices suffer from several drawbacks. The wastewater is prone to environmental pollution, has low extraction efficiency, and exhibits uneven mixing with the precious metal extractant, increasing the cost and lead time for precious metal wastewater separation and extraction. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a precious metal wastewater separation and extraction device, which reduces the pollution of precious metal wastewater to the environment, increases the extraction efficiency of precious metals, mixes more evenly with precious metal extractants, reduces the cost of precious metal wastewater separation and extraction, and reduces lead time, thus effectively solving the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precious metal wastewater separation and extraction device, comprising a support base, a wastewater collection unit, and a fixed assembly unit;

[0007] Support base: A fixed shell is provided on the upper side, and fixed assembly units are provided on the left and right sides of the fixed shell respectively. Support legs are provided at the four corners of the lower side of the support base, and maintenance holes are provided on the front side of the fixed shell.

[0008] Wastewater collection unit: includes a sealing plate, a connecting rod, an electric push rod, and a filter screen. A circular hole is formed on the upper surface of the fixed housing, and a cavity is formed on the upper side of the fixed housing. A sliding groove is formed on the top surface of the fixed housing on both sides of the circular hole, extending into the corresponding cavity. A stabilizing sliding column is fixedly connected to each of the two sliding grooves, and an adjusting slider is slidably connected to each of the two sliding grooves. Sliding holes on the two adjusting sliders are slidably connected to the corresponding stabilizing sliding columns. A sealing plate is provided on the upper side of the two adjusting sliders, and the sealing plate is located within the cavity. A connecting rod is provided on the lower side of the two adjusting sliders. The top surface of the fixed housing, located to the left of the circular hole, is fixedly connected to the electric push rod via a fixing seat. The extension end of the electric push rod is fixedly connected to the corresponding connecting rod. A filter screen is fixedly engaged in the circular hole of the fixed housing, located below the sealing plate. The input end of the electric push rod is electrically connected to the output end of an external power supply via an external control switch group.

[0009] The support base is used for support, the fixed shell is used for assembly and protection, the fixed assembly unit is used for assembly and installation, the sealing plate is used for sealing and protection during the reaction, facilitating precipitation reaction, the connecting rod is used to move the sealing plate, facilitating the adjustment of the sealing plate position to open the round hole, facilitating the separation of precious metals and wastewater, the filter screen plate is used to separate precious metals from wastewater, and the electric push rod is activated to provide power for moving the sealing plate, thereby adjusting its position for precipitation separation and extraction.

[0010] Furthermore, the wastewater collection unit also includes a wastewater collection frame and an inspection cover. A wastewater collection frame is provided at the bottom of the fixed shell at the position corresponding to the circular hole. An inspection cover is provided in the inspection hole on the fixed shell. A pull handle is provided on the front side of the inspection cover.

[0011] The wastewater collection frame is used to collect the wastewater after the reaction for centralized treatment. The inspection cover is used for protection and fixation of the wastewater collection frame, thus facilitating its use.

[0012] Furthermore, the wastewater collection unit also includes a reaction funnel, and the upper side of the fixed shell is connected to the reaction funnel at the edge of the circular hole via a sealing strip.

[0013] The reaction funnel is used to hold precious metal wastewater for reaction and extraction, facilitating processing.

[0014] Furthermore, the fixed assembly unit includes a fixed vertical rod, a screw, a power motor, a movable push block, a fixed frame, and a reaction tank. A fixed vertical rod is provided on each of the left and right sides of the fixed housing. Each fixed vertical rod has a stabilizing groove, and the two stabilizing grooves pass through the left and right sides of the corresponding fixed vertical rod. A stabilizing slide post is fixedly connected in one stabilizing groove, and a screw is rotatably connected in the other stabilizing groove. The upper end of the screw passes through the upper side of the corresponding fixed vertical rod and is fixedly connected to the output shaft of the power motor. The power motor is fixedly connected to the corresponding fixed vertical rod via a support frame. A movable push block is slidably connected in each of the two stabilizing grooves. A sliding hole on one movable push block is slidably connected to the corresponding stabilizing slide post, and a screw hole on the other movable push block is threadedly connected to the corresponding screw. A fixed frame is fixedly connected between the two movable push blocks. The fixed frame is rotatably connected to the reaction tank via a bearing. The reaction tank is snapped into the corresponding reaction funnel via a snap-fit ​​ring. The input end of the power motor is electrically connected to the output end of an external power supply via an external control switch group.

[0015] The fixed vertical rod is used to fix the screw, the screw is used to adjust the position of the moving push block, the moving push block is used to move up and down to move the fixed frame, the fixed frame is used to fix the reaction barrel, so as to drive the reaction barrel to move up and down to facilitate the removal of heavy metals. The power motor is started to make the screw rotate, thereby raising the reaction barrel to retrieve precious metals.

[0016] Furthermore, the fixed assembly unit also includes a circular cover plate, a rotating motor, a feeding funnel, a rotating column, and a stirring rack. A circular cover plate is fixedly connected inside the reaction tank. The circular cover plate is fixedly connected to the rotating motor via a motor mounting bracket. The output shaft of the rotating motor is fixedly connected to the rotating column. The rotating column is rotatably connected to the corresponding circular cover plate via bearings. The rotating column passes through the circular cover plate and extends into the reaction tank. A stirring rack is fixedly fitted onto the rotating column at a position inside the reaction tank. A feeding hole is provided on the circular cover plate. A feeding funnel is provided inside the feeding hole. A screening screen is provided inside the feeding funnel. The input end of the rotating motor is electrically connected to the output end of an external power supply via an external control switch group.

[0017] The circular cover plate is used to fix the rotating motor. When the rotating motor is started, the rotating column rotates, which in turn rotates the stirring frame, thereby stirring the precious metal wastewater inside. This makes it easier to mix the precious metal wastewater with the extractant, making extraction more convenient and improving extraction efficiency.

[0018] Furthermore, the fixed assembly unit also includes an electromagnetic heating plate. Two electromagnetic heating plates are provided on the outside of the reaction vessel. The two electromagnetic heating plates are fixedly connected to the corresponding fixed shells through connecting frames. The input end of the electromagnetic heating plate is electrically connected to the output end of an external power supply through an external control switch group.

[0019] The electromagnetic heating plate uses industrial electromagnetic heating plates to assist in heating precious metal wastewater, thereby improving reaction efficiency, facilitating separation and extraction, and reducing extraction time.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This precious metal wastewater separation and extraction device has the following advantages: It is equipped with a wastewater collection unit, a sealing plate for sealing and protection during the reaction, facilitating precipitation reaction; a connecting rod for moving the sealing plate, facilitating adjustment of the sealing plate position to open the circular hole for separation of precious metals and wastewater; a filter screen for separating precious metals and wastewater; an electric push rod to provide power for moving the sealing plate; a wastewater collection frame for collecting wastewater after the reaction for centralized treatment; a maintenance cover for protection and fixing to protect the wastewater collection frame; and a reaction funnel for holding precious metal wastewater for reaction and extraction, thereby achieving separation and extraction.

[0022] 2. This precious metal wastewater separation and extraction device has the following advantages: It is equipped with a fixed assembly unit. A fixed vertical rod is used to fix the screw, which is used to adjust the position of the moving push block. The moving push block moves up and down, causing the fixed frame to move. The fixed frame is used to fix the reaction tank, thus moving the reaction tank up and down for easy extraction of heavy metals. A power motor starts, causing the screw to rotate, thereby raising the reaction tank. A circular cover plate is used to fix the rotating motor. The rotating motor starts, causing the rotating column to rotate, which in turn rotates the stirring frame, thus stirring the internal precious metal wastewater. This facilitates more uniform mixing of the precious metal wastewater and the extraction agent, making extraction easier. An industrial electromagnetic heating plate is used to assist in heating the precious metal wastewater, improving reaction efficiency, reducing reaction time, and facilitating metal separation.

[0023] 3. This precious metal wastewater separation and extraction device has the following advantages: it reduces the pollution of precious metal wastewater to the environment, increases the extraction efficiency of precious metals, mixes more evenly with the precious metal extractant, reduces the cost of precious metal wastewater separation and extraction, and reduces lead time. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0025] Figure 2 This is a side sectional view of the present invention.

[0026] Figure 3 This is a partial cross-sectional view of the wastewater collection unit of this utility model;

[0027] Figure 4 This is a front sectional view of the present invention.

[0028] Figure 5 This is a partial structural diagram of the fixed assembly unit of this utility model.

[0029] In the diagram: 1 Support base, 2 Fixed shell, 3 Wastewater collection unit, 31 Reaction funnel, 32 Sealing plate, 33 Connecting rod, 34 Electric push rod, 35 Filter screen plate, 36 Wastewater collection frame, 37 Inspection cover plate, 4 Fixed assembly unit, 41 Fixed vertical rod, 42 Screw, 43 Power motor, 44 Moving push block, 45 Fixed frame, 46 Reaction tank, 47 Circular cover plate, 48 Rotating motor, 49 Feed funnel, 410 Rotating column, 411 Stirring rack, 412 Electromagnetic heating plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-5 This embodiment provides a technical solution: a precious metal wastewater separation and extraction device, including a support base 1, a wastewater collection unit 3 and a fixed assembly unit 4;

[0032] Support base 1: A fixed shell 2 is provided on the upper side, and fixed assembly units 4 are provided on the left and right sides of the fixed shell 2 respectively. Support legs are provided at the four corners of the lower side of the support base 1, and maintenance holes are provided on the front side of the fixed shell 2.

[0033] Wastewater collection unit 3 includes a sealing plate 32, a connecting rod 33, an electric push rod 34, and a filter screen 35. A circular hole is opened on the upper surface of the fixed shell 2, and a cavity is opened on the upper side of the fixed shell 2. A sliding groove is opened on the top surface of the fixed shell 2 at the front and rear sides of the circular hole, and the two sliding grooves extend into the corresponding cavities. A stabilizing sliding column is fixedly connected to each of the two sliding grooves, and an adjusting slider is slidably connected to each of the two sliding grooves. The sliding holes on the two adjusting sliders are slidably connected to the corresponding stabilizing sliding columns. A sealing plate 32 is set on the upper side of the two adjusting sliders and is set in the cavity. A connecting rod 33 is set on the lower side of the two adjusting sliders. The top surface of the fixed shell 2 at the left side of the circular hole is fixedly connected to the electric push rod 34 through a fixing seat. The extension end of the electric push rod 34 is fixedly connected to the corresponding connecting rod 33. A filter screen 35 is fixedly snapped into the circular hole of the fixed shell 2 at the lower side of the sealing plate 32. The input end of the electric push rod 34 is electrically connected to the output end of the external power supply through an external control switch group.

[0034] The support base 1 is used for support, the fixed shell 2 is used for assembly and protection, the fixed assembly unit 4 is used for assembly and installation, the sealing plate 32 is used for sealing and protection during the reaction to facilitate precipitation reaction, the connecting rod 33 is used to move the sealing plate 32 to facilitate the adjustment of the position of the sealing plate 32 to open the round hole for the separation of precious metals and wastewater, the filter screen plate 35 is used to separate precious metals from wastewater, and the electric push rod 34 is activated to provide power for the movement of the sealing plate 32, thereby adjusting its position for precipitation separation and extraction.

[0035] The wastewater collection unit 3 also includes a wastewater collection frame 36 and an inspection cover 37. A wastewater collection frame 36 is provided at the bottom of the fixed shell 2 at the position corresponding to the round hole. An inspection cover 37 is provided in the inspection hole on the fixed shell 2. A pull handle is provided on the front side of the inspection cover 37.

[0036] Wastewater collection frame 36 is used to collect wastewater after reaction for centralized treatment and use. Inspection cover 37 is used for protection and fixation to protect the wastewater collection frame 36 and facilitate its use.

[0037] Wastewater collection unit 3 also includes reaction funnel 31, and the upper side of fixed shell 2 is connected to reaction funnel 31 by sealing strip at the edge of the round hole.

[0038] The reaction funnel 31 is used to hold precious metal wastewater for reaction extraction, which facilitates processing.

[0039] The fixed assembly unit 4 includes a fixed vertical rod 41, a screw 42, a power motor 43, a movable push block 44, a fixed frame 45, and a reaction tank 46. A fixed vertical rod 41 is provided on each of the left and right sides of the fixed housing 2. Each fixed vertical rod 41 has a stabilizing groove, with two stabilizing grooves passing through the left and right sides of the corresponding fixed vertical rod 41. A stabilizing slide post is fixedly connected to one stabilizing groove, and a screw 42 is rotatably connected to the other stabilizing groove. The upper end of the screw 42 passes through the upper side of the corresponding fixed vertical rod 41 and is fixedly connected to the output shaft of the power motor 43. The power motor 43... 3. The support frame is fixedly connected to the corresponding fixed vertical rod 41. A movable push block 44 is slidably connected in each of the two stabilizing slide grooves. The sliding hole on one of the movable push blocks 44 is slidably connected to the corresponding stabilizing slide column. The screw hole on the other movable push block 44 is threadedly connected to the corresponding screw 42. A fixed frame 45 is fixedly connected between the two movable push blocks 44. The fixed frame 45 is rotatably connected to the reaction tank 46 through the bearing. The reaction tank 46 is snapped into the corresponding reaction funnel 31 through the snap ring. The input end of the power motor 43 is electrically connected to the output end of the external power supply through the external control switch group.

[0040] The fixed vertical rod 41 is used to fix the screw 42. The screw 42 is used to adjust the position of the movable push block 44. The movable push block 44 is used to move up and down to move the fixed frame 45. The fixed frame 45 is used to fix the reaction tank 46 to drive the reaction tank 46 to move up and down to facilitate the removal of heavy metals. The power motor 43 is started to make the screw 42 rotate, thereby raising the reaction tank 46 to retrieve precious metals.

[0041] The fixed assembly unit 4 also includes a circular cover plate 47, a rotating motor 48, a feeding funnel 49, a rotating column 410, and a stirring rack 411. A circular cover plate 47 is fixedly connected inside the reaction tank 46. The circular cover plate 47 is fixedly connected to the rotating motor 48 through a motor mounting bracket. The output shaft of the rotating motor 48 is fixedly connected to the rotating column 410. The rotating column 410 is rotatably connected to the corresponding circular cover plate 47 through a bearing. The rotating column 410 passes through the circular cover plate 47 and extends into the reaction tank 46. A stirring rack 411 is fixedly fitted onto the rotating column 410 at a position inside the reaction tank 46. A feeding hole is opened on the circular cover plate 47. A feeding funnel 49 is installed in the feeding hole. A screening screen is installed in the feeding funnel 49. The input end of the rotating motor 48 is electrically connected to the output end of an external power supply through an external control switch group.

[0042] The circular cover plate 47 is used to fix the rotating motor 48. When the rotating motor 48 is started, the rotating column 410 rotates, which in turn rotates the stirring rack 411, thereby stirring the precious metal wastewater inside. This makes it easier to mix the precious metal wastewater and the extractant more evenly, facilitating extraction and improving extraction efficiency.

[0043] The fixed assembly unit 4 also includes an electromagnetic heating plate 412. Two electromagnetic heating plates 412 are provided on the outside of the reaction vessel 46. The two electromagnetic heating plates 412 are fixedly connected to the corresponding fixed shell 2 through connecting brackets. The input end of the electromagnetic heating plate 412 is electrically connected to the output end of the external power supply through an external control switch group.

[0044] The electromagnetic heating plate 412 is an industrial electromagnetic heating plate used to assist in heating precious metal wastewater, thereby improving reaction efficiency, facilitating separation and extraction, and reducing extraction time.

[0045] The working principle of the precious metal wastewater separation and extraction device provided by this utility model is as follows: First, the precious metal wastewater and reactant are fed into the reaction tank 46 through the feeding funnel 49. The stirring is made more uniform by starting the rotating motor 48 and the electromagnetic heating plate 412, thereby increasing the temperature and facilitating the reaction and precipitation. After the metal is separated, the sealing plate 32 is moved by starting the electric push rod 34, so that the filter screen plate 35 can separate the metal from the wastewater. The wastewater is collected through the wastewater collection frame 36. Then, the power motor 43 is started to raise the reaction tank 46, thereby allowing the metal to be retrieved.

[0046] It is worth noting that the core chip of the external control switch group disclosed in the above embodiments is a PLC microcontroller, the electromagnetic heating plate 412 is an industrial electromagnetic heating plate, the power motor 43 and the rotary motor 48 are servo motors, and the external control switch group controls the operation of the electromagnetic heating plate 412, the electric push rod 34, the power motor 43 and the rotary motor 48 using methods commonly used in the prior art.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A precious metal wastewater separation and extraction device, characterized in that: It includes a support base (1), a wastewater collection unit (3), and a fixed assembly unit (4); Support base (1): A fixed shell (2) is provided on the upper side. Fixed assembly units (4) are provided on the left and right sides of the fixed shell (2). Support legs are provided at the four corners of the lower side of the support base (1). Inspection holes are provided on the front side of the fixed shell (2). Wastewater collection unit (3): includes a sealing plate (32), a connecting rod (33), an electric push rod (34), and a filter screen (35). A circular hole is opened on the upper surface of the fixed shell (2), and a cavity is opened on the upper side of the fixed shell (2). A sliding groove is opened on the top surface of the fixed shell (2) at the front and rear sides of the circular hole. The two sliding grooves extend into the corresponding cavities. A stable sliding column is fixedly connected to each of the two sliding grooves. An adjusting slider is slidably connected to each of the two sliding grooves. The sliding holes on the two adjusting sliders are slidably connected to the corresponding stable sliding columns. The upper side of the two adjusting sliders A sealing plate (32) is provided, which is located in the cavity. A connecting rod (33) is provided on the lower side of the two adjusting sliders. The top surface of the inner end of the fixed shell (2) is fixedly connected to the electric push rod (34) at the position on the left side of the circular hole through a fixed seat. The extension end of the electric push rod (34) is fixedly connected to the corresponding connecting rod (33). A filter screen plate (35) is fixedly snapped into the circular hole on the fixed shell (2) at the position below the sealing plate (32). The input end of the electric push rod (34) is electrically connected to the output end of the external power supply through an external control switch group.

2. The precious metal wastewater separation and extraction device according to claim 1, characterized in that: The wastewater collection unit (3) also includes a wastewater collection frame (36) and an inspection cover (37). A wastewater collection frame (36) is provided at the bottom of the fixed shell (2) at the position corresponding to the round hole. An inspection cover (37) is provided in the inspection hole on the fixed shell (2). A pull handle is provided on the front side of the inspection cover (37).

3. The precious metal wastewater separation and extraction device according to claim 1, characterized in that: The wastewater collection unit (3) also includes a reaction funnel (31), and the upper side of the fixed shell (2) is connected to the reaction funnel (31) at the edge of the round hole by a sealing strip.

4. The precious metal wastewater separation and extraction device according to claim 3, characterized in that: The fixed assembly unit (4) includes a fixed vertical rod (41), a screw (42), a power motor (43), a movable push block (44), a fixed frame (45), and a reaction tank (46). A fixed vertical rod (41) is provided on each of the left and right sides of the fixed shell (2). Each fixed vertical rod (41) has a stabilizing groove. The two stabilizing grooves pass through the left and right sides of the corresponding fixed vertical rod (41). A stabilizing sliding column is fixedly connected in one stabilizing groove, and a screw (42) is rotatably connected in the other stabilizing groove. The upper end of the screw (42) passes through the upper side of the corresponding fixed vertical rod (41) and is fixedly connected to the output shaft of the power motor (43). The machine (43) is fixedly connected to the corresponding fixed vertical rod (41) through the support frame. A movable push block (44) is slidably connected in each of the two stable sliding grooves. The sliding hole on one of the movable push blocks (44) is slidably connected to the corresponding stable sliding column. The screw hole on the other movable push block (44) is threadedly connected to the corresponding screw (42). A fixed frame (45) is fixedly connected between the two movable push blocks (44). The fixed frame (45) is rotatably connected to the reaction tank (46) through the bearing. The reaction tank (46) is snapped to the corresponding reaction funnel (31) through the snap ring. The input end of the power motor (43) is electrically connected to the output end of the external power supply through the external control switch group.

5. The precious metal wastewater separation and extraction device according to claim 4, characterized in that: The fixed assembly unit (4) also includes a circular cover plate (47), a rotating motor (48), a feeding funnel (49), a rotating column (410), and a stirring rack (411). A circular cover plate (47) is fixedly connected inside the reaction tank (46). The circular cover plate (47) is fixedly connected to the rotating motor (48) via a motor mounting bracket. The output shaft of the rotating motor (48) is fixedly connected to the rotating column (410). The rotating column (410) rotates on the corresponding circular cover plate (47) via bearings. The rotating column (410) passes through the circular cover plate (47) and extends into the reaction tank (46). A stirring rack (411) is fixedly sleeved on the rotating column (410) at a position inside the reaction tank (46). A feed hole is opened on the circular cover plate (47). A feed funnel (49) is provided in the feed hole. A screen plate is provided in the feed funnel (49). The input end of the rotating motor (48) is electrically connected to the output end of the external power supply through an external control switch group.

6. The precious metal wastewater separation and extraction device according to claim 4, characterized in that: The fixed assembly unit (4) also includes an electromagnetic heating plate (412). Two electromagnetic heating plates (412) are provided on the outside of the reaction tank (46). The two electromagnetic heating plates (412) are fixedly connected to the corresponding fixed shell (2) through connecting frames. The input end of the electromagnetic heating plate (412) is electrically connected to the output end of the external power supply through an external control switch group.

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