Rotary anti-corrosion multi-metal intelligent digestion device

Abstract

The invention relates to the technical field of metal digestion, in particular to a rotary anti-corrosion multi-metal intelligent digestion device. Comprising a device shell, and a digestion chamber is arranged in the device shell; a translation plate is arranged at the bottom of the digestion chamber; a rotary digestion mechanism for synchronously performing multiple groups of digestion work is arranged at the top of the translation plate. The sampling mechanism is controlled to stretch into wastewater, then the water-gas dual-purpose pump is controlled to suck multiple groups of wastewater into the rotary digestion mechanism according to requirements, and then the multi-channel adding mechanism is controlled to add different strong acids or strong oxidants in multiple groups of liquid storage tanks into the corresponding wastewater according to requirements. The reagent adding channel is relatively independent, and the digestion process is in different spaces for independent temperature control and synchronous digestion, so that the risk of cross contamination is reduced, the accuracy of subsequent detection work is improved, and the digestion work efficiency is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of metal digestion, and in particular relates to a rotary anti-corrosion multi-metal intelligent digestion device. Background Art

[0002] Heavy metals in wastewater are often wrapped in organic matter or suspended particles. Digestion uses strong acids and high temperatures to destroy these "cages", completely releasing the heavy metals into a detectable ionic state, making subsequent testing more accurate.

[0003] A search revealed that, in the prior art, Chinese Patent Publication No. CN118330167B, Publication Date: August 16, 2024, discloses a device for detecting heavy metal content in grease-containing wastewater, comprising a test platform, a top cover disposed at the top of the test platform, a drop test tray disposed on one side of the test platform, a test tube rack disposed above the test platform, test tubes arranged in the test tube rack, an extension plate disposed on one side of the test platform, an adjustment assembly disposed above the extension plate, a test tray fixedly connected to one side of the adjustment assembly, two sets of digestion tubes and a set of piston tubes disposed at the top of the test tray, the two sets of digestion tubes containing a pre-oxidant and a strong acid oxidant, respectively. The invention controls the opening and closing of the liquid inlet channel through a valve stem and a valve plate, allowing the pre-oxidant to first pre-digest the grease-containing wastewater, and then thoroughly digest the grease-containing wastewater using the strong acid oxidant. This prevents the generation of a large number of bubbles during the digestion process that could cause the water sample to overflow, greatly improving the safety of the detection process.

[0004] However, the device still has the following defects: In wastewater heavy metal testing, existing digestion devices often require the replacement of different containers to process different metal elements such as copper, zinc, and nickel, which not only increases the complexity of the operation but also easily leads to residual contamination, reducing the accuracy of subsequent testing. Summary of the Invention

[0005] To address the above problems, the present invention provides a rotary anti-corrosion multi-metal intelligent digestion device, comprising a device housing, a drive module being provided at a top side edge of the device housing; a sampling mechanism for extracting an equal amount of wastewater is connected to the output end of the drive module; The top of the device shell is provided with a water-gas dual-purpose pump for sucking wastewater and reversely extracting gas; a digestion chamber is provided in the device shell; a translation plate is provided at the bottom of the digestion chamber; a rotating digestion mechanism for synchronously performing multiple groups of digestion operations is provided on the top of the translation plate; A multi-channel adding mechanism for adding different reagents is provided on the top inner wall of the digestion chamber; a sample delivery tube is rotatably provided at one edge of the top of the digestion chamber to avoid contact with the multi-channel adding mechanism; the sample delivery tube is Z-shaped; The input end of the water-gas dual-purpose pump is communicated with the sampling mechanism, and the output end is communicated with the sample delivery tube; a storage chamber is provided in the device shell; and a plurality of liquid storage tanks and gas storage tanks are provided in the storage chamber.

[0006] Furthermore, the driving module includes an electric slide; the electric slide is installed at the top side edge of the device shell; the top of the electric slide is transmission-connected to the electric slide; the top of the electric turntable is transmission-connected to a robotic arm; the output end of the robotic arm is transmission-connected to the sampling mechanism; a placement plate is provided on one side wall of the device shell; a storage groove is provided at the top side edge of the device shell away from the electric slide; the sampling mechanism moves through the storage groove.

[0007] Furthermore, the sampling mechanism includes a cover plate; a guide tube is provided at the bottom center of the cover plate; a liquid level sensor is provided at the bottom of the cover plate; a first sampling tube is movably passed through the bottom of the guide tube; a filter sleeve is sleeved on the bottom outer wall of the first sampling tube; a microfiltration membrane is provided on the inner wall of the filter sleeve, and an oleophobic coating is provided on the outer wall; a mounting plate is provided at the bottom of the guide tube.

[0008] Furthermore, two groups of connecting rods are symmetrically and slidably connected to the top of the mounting plate; a group of magnetic blocks is provided at the end of each group of connecting rods away from the mounting plate; a group of cleaning cotton pads are respectively provided on the opposite side walls of the two groups of magnetic blocks; the two groups of magnetic blocks are combined to form a circular structure; the circular structure is movably sleeved on the outer wall of the first sampling tube; a second sampling tube is provided in the guide tube; the bottom of the second sampling tube is movably passed through the top of the first sampling tube and is connected to the first sampling tube.

[0009] Furthermore, the rotary digestion mechanism includes an electromagnetic rotating seat; the top of the electromagnetic rotating seat is transmission-connected to a digestion shell; the top of the digestion shell is movably connected to a sample tray; a plurality of groups of digestion test tubes are distributed in a circular array on the sample tray; a plurality of groups of placement slots are opened in a circular array on the sample tray; each group of digestion test tubes is movably inserted into a corresponding group of placement slots.

[0010] Furthermore, a plurality of heating tanks are arranged in a circular array on the top of the digestion shell; a group of weighing sensors are provided at the bottom of each group of heating tanks; a group of vacuum tanks are opened on the inner wall of each group of heating tanks; a group of heating tubes are provided in each group of vacuum tanks; a group of sealing and heat-insulating rings are provided at the connection between the two ends of each group of heating tubes and the top and bottom of the vacuum tank; and a group of electromagnetic heating coils are provided in each group of vacuum tanks.

[0011] Furthermore, the multi-channel addition mechanism includes several groups of electric push rods arranged in a circular array; the fixed parts of several groups of the electric push rods are installed on the top inner wall of the digestion chamber; the output ends of several groups of the electric push rods are transmission-connected to the reagent addition tray; several groups of infusion pumps are distributed in a circular array on the top of the reagent addition tray; and an air pump is provided at the top center of the reagent addition tray.

[0012] Furthermore, the bottom of the reagent addition tray is provided with several groups of air guide grooves distributed in a circular array; a group of infrared temperature sensors is provided on the top inner wall of each group of the air guide grooves; a first addition tube is movably passed through the top inner wall of each group of the air guide grooves; several groups of first air guide holes are provided on the inner wall of each group of the air guide grooves in a circular array; several groups of air guide cavities are distributed in a circular array inside the reagent addition tray; each group of the air guide cavities is located directly above the corresponding group of air guide grooves.

[0013] Furthermore, a group of second addition tubes is provided on the top inner wall of each group of the gas guide cavities; the bottom of each group of the second addition tubes is movable through the top of the corresponding group of the first addition tubes and is connected to the first addition tubes; the input end of each group of the infusion pumps is connected to the corresponding group of liquid storage tanks, and the output end is connected to the corresponding group of second addition tubes; the input end of the gas pump is connected to the gas storage tank, and the output end is connected to several groups of gas guide cavities.

[0014] Furthermore, each group of the air guide cavities is provided with a group of movable shielding covers; each group of the movable shielding covers is sleeved on the outer wall of a corresponding group of first adding tubes; a number of groups of second air guide holes are distributed in a circular array on the outer wall of each group of the movable shielding covers; each group of the second air guide holes is movably connected to the corresponding group of first air guide holes.

[0015] The beneficial effects of the present invention are: 1. By controlling the sampling mechanism to extend into the wastewater, the water-gas dual-purpose pump is then controlled to pump multiple groups of wastewater into the rotary digestion mechanism as needed. Then, according to demand, the multi-channel adding mechanism is controlled to add different strong acids or strong oxidants in multiple liquid storage tanks into the corresponding wastewater. Then, the rotary digestion mechanism is controlled to heat the solution to the corresponding temperature for digestion. The reagent addition channels are relatively independent, and the digestion process is in different spaces with independent temperature control and synchronous digestion, which not only reduces the risk of cross contamination, but also improves the accuracy of subsequent detection work and the efficiency of digestion work.

[0016] 2. By controlling the power supply of the corresponding electromagnetic heating coil, the heating tube heats up quickly. Since the inner wall of the heating tube fits against the outer wall of the digestion tube, the solution in the digestion tube can be heated evenly and quickly. The heating temperature can be changed by adjusting the current frequency. Each group of heating tubes is isolated from the digestion shell by two groups of sealed insulation rings and vacuum grooves, avoiding heat loss and interference between different digestion temperatures. While improving the heating efficiency of the digestion work, it reduces the influence of mutual interference between different digestion temperatures.

[0017] 3. By controlling the corresponding first addition pipe to descend, the corresponding groups of movable shielding covers are lowered, thereby connecting the corresponding groups of first air guide holes with the second air guide holes. Then, the air delivery pump is controlled to extract the inert gas in the gas storage tank, and the inert gas is sprayed out from the air guide groove after passing through the corresponding air guide cavity, the second air guide hole and the first air guide hole. This prevents the strong acid liquid from diffusing acid mist and corroding the structure of the digestion device during the addition and digestion process. It also achieves the goal of limiting the acid mist to the digestion work area, reducing the corrosion effect of the acid mist, and saving inert gas.

[0018] 4. By controlling the first sampling tube to extend into the wastewater for suction, the filter sleeve with a microfiltration membrane inside can avoid the inhalation of suspended matter and avoid the introduction of competitive reactions in the subsequent digestion process. In addition, during the extension and retraction of the first sampling tube, the cleaning cotton pad can clean the outer wall of the first sampling tube. When the digestion device is idle, the sampling mechanism can be controlled to move into the storage tank, and then the water-gas dual-purpose pump is controlled to reversely suck the inert gas in the digestion chamber to blow out the residual wastewater and impurities in the wastewater channel to avoid cross-contamination when sucking different wastewater next time. Subsequently, the inert gas fills the storage tank to avoid long-term contact between the sampling mechanism and the air, which not only improves the cleaning efficiency of the digestion device, but also increases the service life of the digestion device.

[0019] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 Shown is a schematic structural diagram of a digestion device according to an embodiment of the present invention; Figure 2 A schematic structural diagram of a digestion device for sampling according to an embodiment of the present invention is shown; Figure 3 A schematic cross-sectional view of a digestion device according to an embodiment of the present invention is shown; Figure 4 A schematic structural diagram of a sampling mechanism according to an embodiment of the present invention is shown; Figure 5 shows a cross-sectional schematic diagram of a sampling mechanism according to an embodiment of the present invention; Figure 6 It shows a schematic structural diagram of a rotary digestion mechanism according to an embodiment of the present invention; Figure 7 shows a cross-sectional schematic diagram of a rotary digestion mechanism according to an embodiment of the present invention; Figure 8 It shows a schematic structural diagram of a multi-channel adding mechanism according to an embodiment of the present invention; Figure 9 A bottom-view structural diagram of a multi-channel adding mechanism according to an embodiment of the present invention is shown; Figure 10 A cross-sectional schematic diagram of a multi-channel adding mechanism according to an embodiment of the present invention is shown.

[0022] In the figure: 1. Device housing; 2. Electric slide; 3. Electric turntable; 4. Robotic arm; 5. Sampling mechanism; 6. Water-gas dual-purpose pump; 7. Placement plate; 8. Digestion chamber; 9. Translation plate; 10. Rotary digestion mechanism; 11. Multi-channel addition mechanism; 12. Sample feeding tube; 13. Storage tank; 14. Storage chamber; 15. Liquid storage tank; 501. Cover plate; 502. Guide tube; 503. Liquid level sensor; 504. First sampling tube; 505. Filter sleeve; 506. Mounting plate; 507. Connecting rod; 508. Magnetic block; 509. Second sampling tube; 1001. Electromagnetic rotating base; 1002, digestion shell; 1003, sample tray; 1004, digestion test tube; 1005, placement slot; 1006, heating tank; 1007, vacuum tank; 1008, heating tube; 1009, sealing and heat-insulating ring; 1010, electromagnetic heating coil; 1101, electric push rod; 1102, reagent addition tray; 1103, infusion pump; 1104, gas pump; 1105, gas guide slot; 1106, first addition tube; 1107, first gas guide hole; 1108, gas guide cavity; 1109, second addition tube; 1110, movable shielding cover; 1111, second gas guide hole. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0024] The embodiment of the present invention provides a rotary anti-corrosion multi-metal intelligent digestion device, including a device housing 1. For example, Figure 1 、 Figure 2 and Figure 3 As shown, an electric slide 2 is provided at one side edge of the top of the device housing 1; the top of the electric slide 2 is connected to the electric slide 2; the top of the electric turntable 3 is connected to the mechanical arm 4; the output end of the mechanical arm 4 is connected to the sampling mechanism 5; the electric slide 2, the electric turntable 3 and the mechanical arm 4 constitute a driving module; the top of the device housing 1 is provided with a water-gas dual-purpose pump 6; a placement plate 7 is provided on one side wall of the device housing 1; a digestion chamber 8 is provided in the device housing 1; a translation plate 9 is provided at the bottom of the digestion chamber 8; the top of the translation plate 9 A rotating digestion mechanism 10 is provided; a multi-channel adding mechanism 11 is provided on the top inner wall of the digestion chamber 8; a sample delivery tube 12 is rotatably provided at the edge of one side of the top of the digestion chamber 8; the sample delivery tube 12 is Z-shaped; the input end of the water-gas dual-purpose pump 6 is connected to the sampling mechanism 5, and the output end is connected to the sample delivery tube 12; a receiving groove 13 is provided at the edge of one side of the top of the device housing 1 away from the electric slide 2; the sampling mechanism 5 is movable through the receiving groove 13; a storage chamber 14 is provided in the device housing 1; and a plurality of liquid storage tanks 15 and gas storage tanks are provided in the storage chamber 14.

[0025] When performing heavy metal digestion work in wastewater, first rotate and lay the placement plate 7 flat, then place the container containing wastewater on the top of the placement plate 7, then control the electric slide 2, electric turntable 3 and robotic arm 4 to work together to drive the sampling mechanism 5 into the wastewater, then control the water-gas dual-purpose pump 6 to pump multiple groups of wastewater into the rotating digestion mechanism 10 as needed, then control the multi-channel adding mechanism 11 to add different strong acids or strong oxidants in multiple groups of liquid storage tanks 15 into the corresponding wastewater according to needs, then control the rotating digestion mechanism 10 to heat the solution to the corresponding temperature for digestion work, the reagent addition channels are relatively independent, and the digestion process is in different spaces with independent temperature control and synchronous digestion, which not only reduces the risk of cross contamination, improves the accuracy of subsequent detection work, but also improves the efficiency of digestion work.

[0026] For example, Figure 4 and Figure 5As shown, the sampling mechanism 5 includes a cover plate 501; a guide tube 502 is provided at the bottom center of the cover plate 501; a liquid level sensor 503 is provided at the bottom of the cover plate 501; a first sampling tube 504 is movably passed through the bottom of the guide tube 502; a filter sleeve 505 is sleeved on the bottom outer wall of the first sampling tube 504; a microfiltration membrane is provided on the inner wall of the filter sleeve 505, and an oleophobic coating is provided on the outer wall; a mounting plate 506 is provided at the bottom of the guide tube 502; two symmetrical sliding connections are provided on the top of the mounting plate 506. a group of connecting rods 507; each group of connecting rods 507 is provided with a group of magnetic blocks 508 at one end away from the mounting plate 506; a group of cleaning cotton pads are respectively provided on the opposite side walls of the two groups of magnetic blocks 508; the two groups of magnetic blocks 508 are combined to form a circular ring structure; the circular ring structure is movably sleeved on the outer wall of the first sampling tube 504; a second sampling tube 509 is provided in the guide tube 502; the bottom of the second sampling tube 509 is movably passed through the top of the first sampling tube 504 and is connected to the first sampling tube 504.

[0027] When sampling wastewater, the liquid level sensor at the bottom of the cover plate 501 monitors the height of the wastewater level and controls the first sampling tube 504 to extend into the wastewater for suction. At this time, the filter sleeve 505 with a microfiltration membrane inside can avoid the suction of suspended matter and avoid the introduction of competitive reactions in the subsequent digestion process. In addition, during the extension and retraction of the first sampling tube 504, the cleaning cotton pad can clean the outer wall of the first sampling tube 504. When the digestion device is idle, the sampling mechanism 5 can be controlled to move to the storage tank 13, and then the water-gas dual-purpose pump 6 can be controlled to reversely suck the inert gas in the digestion chamber 8 to blow out the residual wastewater and impurities in the wastewater channel to avoid cross-contamination when different wastewater is sucked next time. Subsequently, the inert gas fills the storage tank 13 to avoid the sampling mechanism 5 from being in contact with the air for a long time, which not only improves the cleaning efficiency of the digestion device, but also improves the service life of the digestion device.

[0028] For example, Figure 6 and Figure 7As shown, the rotary digestion mechanism 10 includes an electromagnetic rotating seat 1001; the top of the electromagnetic rotating seat 1001 is connected to a digestion shell 1002 in a transmission manner; the top of the digestion shell 1002 is movably connected to a sample tray 1003; a plurality of groups of digestion tubes 1004 are arranged in a circular array on the sample tray 1003; a plurality of groups of placement slots 1005 are opened in a circular array on the sample tray 1003; each group of digestion tubes 1004 is movably inserted into a corresponding group of placement slots 1005; the digestion shell Several groups of heating grooves 1006 are arranged in a circular array on the top of 1002; a group of weighing sensors are provided at the bottom of each group of heating grooves 1006; a group of vacuum grooves 1007 are opened on the inner wall of each group of heating grooves 1006; a group of heating tubes 1008 are provided in each group of vacuum grooves 1007; a group of sealing insulation rings 1009 are provided at the connection between the two ends of each group of heating tubes 1008 and the top and bottom of the vacuum groove 1007; a group of electromagnetic heating coils 1010 are provided in each group of vacuum grooves 1007.

[0029] When performing heavy metal digestion work in wastewater, multiple groups of equal amounts of wastewater are added to the corresponding digestion test tubes 1004 respectively, and after adding the corresponding strong acid or strong oxidant, the corresponding electromagnetic heating coil 1010 is controlled to be energized, so that the heating tube 1008 heats up quickly. Since the inner wall of the heating tube 1008 is attached to the outer wall of the digestion test tube 1004, the solution in the digestion test tube 1004 can be heated evenly and quickly, and the heating temperature can be changed by adjusting the current frequency. Each group of heating tubes 1008 is isolated from the digestion shell 1002 by two groups of sealed insulation rings 1009 and vacuum grooves 1007, avoiding heat loss and interference between different digestion temperatures. While improving the heating efficiency of the digestion work, it reduces the influence of mutual interference between different digestion temperatures.

[0030] For example, Figure 8 、 Figure 9 and Figure 10As shown, the multi-channel adding mechanism 11 includes several groups of electric push rods 1101 arranged in a circular array; the fixed parts of several groups of the electric push rods 1101 are installed on the top inner wall of the digestion chamber 8; the output ends of several groups of the electric push rods 1101 are connected to the reagent adding tray 1102 in a transmission manner; the top of the reagent adding tray 1102 is provided with several groups of infusion pumps 1103 distributed in a circular array; the top center of the reagent adding tray 1102 is provided with an air pump 1104; the reagent adding tray The bottom of the reagent adding tray 1102 is provided with a plurality of gas guide grooves 1105 in an annular array; a group of infrared temperature sensors are provided on the top inner wall of each group of gas guide grooves 1105; a first addition tube 1106 is movably passed through the top inner wall of each group of gas guide grooves 1105; a plurality of first gas guide holes 1107 are provided on the inner wall of each group of gas guide grooves 1105 in an annular array; a plurality of gas guide cavities 1108 are provided in an annular array in the reagent adding tray 1102; a plurality of first gas guide holes 1107 are provided on the inner wall of each group of gas guide grooves 1105 ... holes The air cavities 1108 are all located directly above the corresponding set of air guide grooves 1105; a set of second addition tubes 1109 is provided on the top inner wall of each set of the air guide cavities 1108; the bottom of each set of the second addition tubes 1109 is movable through the top of the corresponding set of the first addition tubes 1106 and is connected to the first addition tubes 1106; the input end of each set of the infusion pumps 1103 is connected to the corresponding set of liquid storage tanks 15, and the output end is connected to the corresponding set of the second addition tubes 1109; the air delivery pumps 1103 are connected to the corresponding set of liquid storage tanks 15, and the output end is connected to the corresponding set of the second addition tubes 1109; The input end of 04 is connected with the gas storage tank, and the output end is connected with several groups of gas guide cavities 1108; each group of the gas guide cavities 1108 is provided with a group of movable shielding covers 1110; each group of the movable shielding covers 1110 is sleeved on the outer wall of a corresponding group of first adding tubes 1106; the outer wall of each group of the movable shielding covers 1110 is provided with several groups of second gas guide holes 1111 distributed in a circular array; each group of the second gas guide holes 1111 is movably connected with a corresponding group of first gas guide holes 1107.

[0031] When performing heavy metal digestion work in wastewater, first control the corresponding first addition pipe 1106 to descend, so that the corresponding several groups of movable shielding covers 1110 descend, thereby connecting the corresponding several groups of first air guide holes 1107 with the second air guide holes 1111, and then control the air delivery pump 1104 to extract the inert gas in the gas storage tank, and spray it out from the air guide groove 1105 after passing through the corresponding air guide cavity 1108, the second air guide hole 1111 and the first air guide hole 1107, so as to avoid the acid mist diffusion and corrosion of the structure of the digestion device during the addition and digestion process of the strong acid liquid, and also realize the acid mist limitation only in the digestion work area, and realize the saving of inert gas while reducing the corrosion effect of the acid mist.

[0032] By controlling the sampling mechanism 5 to extend into the wastewater, and then controlling the water-gas dual-purpose pump 6 to pump multiple groups of wastewater into the rotary digestion mechanism 10 as needed, and then controlling the multi-channel adding mechanism 11 to add different strong acids or strong oxidants in multiple liquid storage tanks 15 into the corresponding wastewater as needed, and then controlling the rotary digestion mechanism 10 to heat the solution to the corresponding temperature for digestion. The reagent addition channels are relatively independent, and the digestion process is in different spaces with independent temperature control and synchronous digestion, which not only reduces the risk of cross contamination, but also improves the accuracy of subsequent detection work and the efficiency of digestion work.

[0033] By controlling the corresponding electromagnetic heating coil 1010 to be energized, the heating tube 1008 is heated rapidly. Since the inner wall of the heating tube 1008 is in contact with the outer wall of the digestion tube 1004, the solution in the digestion tube 1004 can be heated evenly and rapidly. The heating temperature can be changed by adjusting the current frequency. Each group of heating tubes 1008 is isolated from the digestion shell 1002 by two groups of sealing insulation rings 1009 and the vacuum groove 1007, thereby avoiding heat loss and interference between different digestion temperatures. While improving the heating efficiency of the digestion work, it reduces the influence of mutual interference between different digestion temperatures.

[0034] By controlling the corresponding first addition tube 1106 to descend, the corresponding groups of movable shielding covers 1110 are also lowered, thereby connecting the corresponding groups of first air guide holes 1107 with the second air guide holes 1111. Subsequently, the air delivery pump 1104 is controlled to extract the inert gas in the gas storage tank, and the inert gas is ejected from the air guide groove 1105 after passing through the corresponding air guide cavity 1108, the second air guide hole 1111 and the first air guide hole 1107. This prevents the strong acid liquid from diffusing acid mist and corroding the structure of the digestion device during the addition and digestion process, and also achieves the limitation of acid mist to the digestion work area. While reducing the corrosion effect of acid mist, it also achieves the saving of inert gas.

[0035] By controlling the first sampling tube 504 to extend into the wastewater for suction, the filter sleeve 505 with a microfiltration membrane inside can avoid the inhalation of suspended matter and avoid the introduction of competitive reactions in the subsequent digestion process. In addition, during the extension and retraction of the first sampling tube 504, the cleaning cotton pad can clean the outer wall of the first sampling tube 504. When the digestion device is idle, the sampling mechanism 5 can be controlled to move to the storage tank 13, and then the water-gas dual-purpose pump 6 can be controlled to reversely suck the inert gas in the digestion chamber 8 to blow out the residual wastewater and impurities in the wastewater channel to avoid cross contamination when sucking different wastewater next time. Subsequently, the inert gas fills the storage tank 13 to avoid the sampling mechanism 5 from being in contact with the air for a long time, which not only improves the cleaning efficiency of the digestion device, but also improves the service life of the digestion device.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary anti-corrosion multi-metal intelligent digestion device, comprising a device housing, characterized in that: A driving module is provided at one edge of the top side of the device housing; a sampling mechanism for extracting an equal amount of wastewater is connected to the output end of the driving module; The top of the device shell is provided with a water-gas dual-purpose pump for sucking wastewater and reversely extracting gas; a digestion chamber is provided in the device shell; a translation plate is provided at the bottom of the digestion chamber; a rotating digestion mechanism for synchronously performing multiple groups of digestion operations is provided on the top of the translation plate; A multi-channel adding mechanism for adding different reagents is provided on the top inner wall of the digestion chamber; a sample delivery tube is rotatably provided at one edge of the top of the digestion chamber to avoid contact with the multi-channel adding mechanism; the sample delivery tube is Z-shaped; The input end of the water-gas dual-purpose pump is communicated with the sampling mechanism, and the output end is communicated with the sample delivery tube; a storage chamber is provided in the device shell; and a plurality of liquid storage tanks and gas storage tanks are provided in the storage chamber.

2. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 1, characterized in that: The driving module includes an electric slide; the electric slide is installed at the top side edge of the device shell; the top of the electric slide is transmission connected to the electric slide; the top of the electric turntable is transmission connected to a robotic arm; the output end of the robotic arm is transmission connected to the sampling mechanism; a placement plate is provided on one side wall of the device shell; a storage groove is opened at the top side edge of the device shell away from the electric slide; the sampling mechanism moves through the storage groove.

3. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 1, characterized in that: The sampling mechanism includes a cover plate; a guide tube is provided at the bottom center of the cover plate; a liquid level sensor is provided at the bottom of the cover plate; a first sampling tube is movably passed through the bottom of the guide tube; a filter sleeve is sleeved on the bottom outer wall of the first sampling tube; a microfiltration membrane is provided on the inner wall of the filter sleeve, and an oleophobic coating is provided on the outer wall; a mounting plate is provided at the bottom of the guide tube.

4. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 3, characterized in that: Two groups of connecting rods are symmetrically and slidably connected to the top of the mounting plate; a group of magnetic blocks is provided at the end of each group of connecting rods away from the mounting plate; a group of cleaning cotton pads are respectively provided on the opposite side walls of the two groups of magnetic blocks; the two groups of magnetic blocks are combined to form a circular ring structure; the circular ring structure is movably sleeved on the outer wall of the first sampling tube; a second sampling tube is provided in the guide tube; the bottom of the second sampling tube is movably passed through the top of the first sampling tube and is connected to the first sampling tube.

5. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 1, characterized in that: The rotary digestion mechanism includes an electromagnetic rotating seat; the top of the electromagnetic rotating seat is transmission-connected to a digestion shell; the top of the digestion shell is movably connected to a sample tray; a plurality of groups of digestion test tubes are distributed in a circular array on the sample tray; a plurality of groups of placement slots are opened in a circular array on the sample tray; each group of digestion test tubes is movably inserted into a corresponding group of placement slots.

6. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 5, characterized in that: A plurality of heating tanks are arranged in a circular array on the top of the digestion shell; a group of weighing sensors is provided at the bottom of each group of heating tanks; a group of vacuum tanks is opened on the inner wall of each group of heating tanks; a group of heating tubes is provided in each group of vacuum tanks; a group of sealing and heat-insulating rings are provided at the connection between the two ends of each group of heating tubes and the top and bottom of the vacuum tank; and a group of electromagnetic heating coils is provided in each group of vacuum tanks.

7. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 1, characterized in that: The multi-channel addition mechanism includes several groups of electric push rods arranged in a circular array; the fixed parts of several groups of the electric push rods are installed on the top inner wall of the digestion chamber; the output ends of several groups of the electric push rods are transmission-connected to the reagent addition tray; several groups of infusion pumps are distributed in a circular array on the top of the reagent addition tray; and an air pump is provided at the top center of the reagent addition tray.

8. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 7, characterized in that: The bottom of the reagent addition tray is provided with several groups of air guide grooves distributed in a circular array; a group of infrared temperature sensors is provided on the top inner wall of each group of air guide grooves; a first addition tube is movably passed through the top inner wall of each group of air guide grooves; a number of first air guide holes are provided on the inner wall of each group of air guide grooves in a circular array; a number of air guide cavities are distributed in a circular array inside the reagent addition tray; each group of air guide cavities is located directly above the corresponding group of air guide grooves.

9. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 8, characterized in that: A group of second addition tubes is provided on the top inner wall of each group of the gas guide cavities; the bottom of each group of the second addition tubes is movable through the top of the corresponding group of the first addition tubes and is connected to the first addition tubes; the input end of each group of the infusion pumps is connected to the corresponding group of liquid storage tanks, and the output end is connected to the corresponding group of second addition tubes; the input end of the gas delivery pump is connected to the gas storage tank, and the output end is connected to several groups of gas guide cavities.

10. The rotary anti-corrosion multi-metal intelligent digestion device according to claim 9, characterized in that: Each group of the air guide cavities is provided with a group of movable shielding covers; each group of the movable shielding covers is sleeved on the outer wall of a corresponding group of first adding tubes; a number of groups of second air guide holes are distributed in a circular array on the outer wall of each group of the movable shielding covers; each group of the second air guide holes is movably connected to the corresponding group of first air guide holes.

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