A microgram high-precision alkali solution preparation device

Abstract

The invention relates to the technical field of alkali preparation of alkali solution, and discloses a microgram high-precision alkali preparation device for alkali solution, comprising a bottom plate, an electric control cabinet is fixedly connected to the top of the bottom plate, an instrument control cabinet is fixedly connected to the top of the bottom plate, a support frame 1 is fixedly connected to the inner wall of the support frame 1, a solid alkali filling port is fixedly connected to the top of the mother liquid tank, a magnetic flap level gauge 1 is fixedly connected to the outer wall of the mother liquid tank, and also comprises: a dissolving mechanism, the dissolving mechanism comprises a support frame 2, and by setting the dissolving mechanism, a plurality of precision conductivity meters are installed at different positions in the dissolving tank, and the concentration of the alkali solution in the tank is detected, and the alkali solution in the tank is ensured to be fully mixed through a plurality of data detections, so as to avoid that the concentration of the alkali solution does not meet the standard due to the error of a single precision conductivity meter, thereby affecting the subsequent production.

Description

Technical Field

[0001] The invention relates to the technical field of alkali solution preparation, in particular to a microgram high-precision alkali solution preparation device. Background Art

[0002] The alkali solution preparation device is a combination of equipment used to mix alkali and solvent in a certain proportion to prepare alkali solution of required concentration. In chemical production, alkali solution is widely used in various reactions and processes. For example, in the field of petrochemicals, alkali solution is used in desulfurization and deacidification processes in the refining process to remove sulfide and acidic impurities in petroleum products and improve the quality of oil products.

[0003] The patent application with application number CN201710917140.9 discloses an alkali solution preparation device, which belongs to the technical field of heat exchangers, and includes a liquid alkali tank, a primary alkali preparation tank, a secondary alkali preparation tank, a flow meter, a solenoid valve, a liquid level meter, a controller and a plurality of conveying pipes; the liquid alkali tank is connected to the primary alkali preparation tank through a conveying pipe; the primary alkali preparation tank is connected to the secondary alkali preparation tank through another conveying pipe, and the conveying pipe connecting the primary alkali preparation tank and the secondary alkali preparation tank is located at one end of the secondary alkali preparation tank and is provided with a flow meter and a solenoid valve; the two ends of the conveying pipe are respectively connected to the secondary alkali preparation tank and a water source, and the conveying pipe connecting the secondary alkali preparation tank and the water source is located at one end of the secondary alkali preparation tank and is provided with a flow meter and a solenoid valve, by setting the primary alkali preparation tank and the secondary alkali preparation tank, the alkali solution is diluted once and then transported, and a secondary dilution is performed after transportation, so that the concentration of the primary alkali solution is not too high, which causes the pipeline to be blocked by the high-concentration alkali solution containing impurities, and the concentration of the alkali solution is not too low, which increases the transportation cost of the alkali solution.

[0004] When the existing equipment is in use, it can configure alkali solution within a certain concentration range, but its accuracy is poor and the configured alkali solution will have a certain error. This leads to reduced production efficiency or excessively violent reactions that are difficult to control in subsequent use of the produced alkali solution, and even causes side reactions and generates impurities, affecting product quality. Summary of the invention

[0005] The object of the present invention is to provide a microgram high-precision alkali solution preparation device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a microgram high-precision alkali solution alkali preparation device, comprising a bottom plate, the top of the bottom plate is fixedly connected to an electric control cabinet, the top of the bottom plate is fixedly connected to an instrument control cabinet, the top of the bottom plate is fixedly connected to a support frame 1, the inner wall of the support frame 1 is fixedly connected to a mother liquid tank, the top of the mother liquid tank is fixedly connected to a solid alkali filling port, the outer wall of the mother liquid tank is fixedly connected to a magnetic flap liquid level gauge 1, and further comprising:

[0007] The dissolving mechanism comprises a second support frame, the inner wall of the second support frame is fixedly connected with a dissolving tank, the top of the dissolving tank is fixedly connected with a motor, the top of the dissolving tank is fixedly connected with a carbon dioxide respirator, the outer wall of the dissolving tank is fixedly connected with two magnetic flap level gauges, the inner wall of the dissolving tank is fixedly connected with two precision conductivity meters, the inner wall of the dissolving tank is fixedly connected with a hollow frame, the inner wall of the dissolving tank is rotatably connected with a rotating component through a bearing, by setting up the dissolving mechanism, multiple precision conductivity meters are installed at different positions in the dissolving tank, the alkali solution concentration in the tank is detected, and multiple data detections are used to ensure that the alkali solution in the tank is fully mixed, so as to avoid that the alkali solution concentration does not meet the standard due to errors of a single precision conductivity meter, thereby affecting subsequent production.

[0008] According to the above technical solution, the rotating component includes a connecting column one, the top of the connecting column one is rotatably connected to the dissolution tank through a bearing, the output end of the motor is fixedly connected to the connecting column one, the bottom of the connecting column one is fixedly connected to a rotating plate one, the outer wall of the rotating plate one is rotatably connected to a reflux component through a bearing, the bottom of the rotating plate one is fixedly connected to a connecting column two, the bottom of the connecting column two is fixedly connected to a rotating plate two, the bottom of the rotating plate two is fixedly connected to a center column, and the outer wall of the center column is fixedly connected to a stirring blade.

[0009] According to the above technical solution, the bottom of the central column is rotatably connected to the hollow frame through a bearing, the inner wall of the central column is fixedly connected with an arc tube, the bottom of the arc tube is fixedly connected with a right-angle tube, and the outer wall of the right-angle tube is fixedly connected to the central column. By setting a rotating component, when the equipment dissolves and mixes the alkali solution, the liquid at the bottom will be transported to the top as the rotating component rotates. In this way, after the valve pours the solution into the dissolution tank, the solution at the bottom can be quickly mixed with the solution at the top, avoiding the situation where the concentration of alkali solution at different positions is different, which affects the subsequent production.

[0010] According to the above technical scheme, the reflux component includes a connecting ring, the outer wall of the connecting ring is fixedly connected to the dissolving tank, the inner wall of the connecting ring is fixedly connected with a hollow column, the end of the hollow column away from the connecting ring is fixedly connected with a hollow ring, the outer wall of the rotating plate one is rotatably connected to the hollow ring through a bearing, the outer wall of the rotating plate two is rotatably connected to the hollow ring through a bearing, the top of the hollow column is fixedly connected with a water-passing plate, and the bottom of the water-passing plate is fixedly connected with a nozzle. By setting up the reflux component, when the alkali solution is transported to the top through the rotating component, the bottom solution can be evenly sprayed in the top solution through the reflux component, ensuring sufficient mixing of the solution and avoiding the situation where the concentration of alkali solution at different positions is different, which affects the subsequent production.

[0011] According to the above technical solution, a connecting pipe 1 is fixedly connected to the bottom of the mother liquid tank, a valve 1 is fixedly connected to the outer wall of the connecting pipe 1, a delivery pump 1 is fixedly connected to the end of the connecting pipe 1 away from the mother liquid tank, a connecting pipe 2 is fixedly connected to the top of the delivery pump 1, and the end of the connecting pipe 2 away from the delivery pump 1 is fixedly connected to the dissolution tank. When the equipment produces alkali solution, preliminary fusion will be carried out in the mother liquid tank, and then the mother liquor will be transported to the dissolution tank through connecting pipes 1 and 2.

[0012] According to the above technical solution, a connecting pipe three is fixedly connected to the bottom of the mother liquid tank, an end of the connecting pipe three away from the mother liquid tank is fixedly connected to the dissolution tank, a valve two is fixedly connected to the outer wall of the mother liquid tank, a delivery pump two is fixedly connected to the outer wall of the connecting pipe three, the bottom of the delivery pump two is fixedly connected to the bottom plate, and an end of the delivery pump two away from the connecting pipe three is fixedly connected to the drain pipe one. After the equipment completes the production of alkali solution, the waste liquid will be discharged through the connecting pipe three and the drain pipe one.

[0013] According to the above technical solution, a connecting pipe four is fixedly connected to the top of the mother liquid tank, a connecting pipe five is fixedly connected to the top of the connecting pipe four, valves three are fixedly connected to the left and right ends of the outer wall of the connecting pipe five, a connecting pipe six is ​​fixedly connected to the bottom of the valve three on the left side, and the bottom of the connecting pipe six is ​​fixedly connected to the dissolving tank. The equipment delivers desalted water into the dissolving tank and the mother liquid tank through connecting pipes four, five and six for the fusion and configuration of solid alkali.

[0014] According to the above technical scheme, a connecting pipe seven is fixedly connected to the bottom of the dissolving tank, and a precision conductivity meter one is fixedly connected to the outer wall of the connecting pipe seven. When the mixed alkali solution is discharged from the equipment, the liquid in the pipeline will also be detected by the precision conductivity meter to further ensure the accuracy of the concentration of the alkali solution discharged from the equipment. If it is detected that the concentration of the alkali solution does not meet the standard, the discharge of the alkali solution will be blocked, and the alkali solution will be returned to the dissolving tank for reprocessing to ensure that the alkali solution produced by the equipment will not affect subsequent production. A metering pump is fixedly connected to the outer wall of the connecting pipe seven, and a connecting pipe eight is fixedly connected to the end of the metering pump away from the connecting pipe seven. A connecting pipe nine is fixedly connected to the top of the connecting pipe eight, and a pressure buffer tank is fixedly connected to the top of the connecting pipe nine. A valve four is fixedly connected to the outer wall of the connecting pipe nine, and the top of the dissolving tank is fixedly connected to the connecting pipe nine.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. The present invention sets a dissolving mechanism, installs multiple precision conductivity meters at different positions in the dissolving tank, detects the concentration of the alkali solution in the tank, ensures that the alkali solution in the tank is fully mixed through multiple data detections, and avoids the alkali solution concentration not meeting the standard due to errors of a single precision conductivity meter, which affects subsequent production.

[0017] 2. The present invention sets a rotating component. When the device dissolves and mixes the alkali solution, the liquid at the bottom will be transported to the top as the rotating component rotates. In this way, after the valve pours the solution into the dissolution tank, the solution at the bottom can be quickly mixed with the solution at the top, avoiding the situation where the concentration of alkali solution at different positions is different, which affects the subsequent production.

[0018] 3. The present invention sets a reflux component. When the alkali solution is transported to the top through the rotating component, the bottom solution can be evenly sprayed in the top solution through the reflux component to ensure sufficient mixing of the solution and avoid different alkali solution concentrations at different positions, which will affect subsequent production.

[0019] 4. When the mixed alkali solution is discharged from the equipment, the present invention will also detect the liquid in the pipeline through a precision conductivity meter to further ensure the accuracy of the concentration of the alkali solution discharged from the equipment. If the concentration of the alkali solution is detected to be not up to the standard, the discharge of the alkali solution will be blocked and the alkali solution will be returned to the dissolution tank for reprocessing to ensure that the alkali solution produced by the equipment will not affect subsequent production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a rear schematic diagram of the main structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the pipeline structure of the present invention;

[0024] Figure 4 is a schematic diagram of the dissolution mechanism of the present invention;

[0025] Figure 5 is a cross-sectional view of the dissolving mechanism of the present invention;

[0026] Figure 6 is a schematic diagram of a rotating assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the main structure of the rotating assembly of the present invention;

[0028] Figure 8 is a schematic diagram of an arc tube of the present invention;

[0029] Fig. 9 is a cross-sectional view of a reflux assembly of the present invention;

[0030] In the figure: 1, bottom plate; 101, electric control cabinet; 102, instrument control cabinet; 103, support frame 1; 104, mother liquid tank; 105, solid alkali filling port; 106, magnetic flap liquid level gauge 1; 107, connecting pipe 1; 108, valve 1; 109, delivery pump 1; 1010, connecting pipe 2; 1011, connecting pipe 3; 1012, valve 2; 1013, delivery pump 2; 1014, drainage pipe 1; 1015, connecting pipe 4; 1016, connecting pipe 5; 1017, valve 3; 1018, connecting pipe 6; 1019, connecting pipe 7; 1020, precision conductivity meter 1; 1021, metering pump; 1022, connecting pipe 8; 1023 , connecting pipe nine; 1024, pressure buffer tank; 1025, valve four; 2, dissolving mechanism; 201, support frame two; 202, dissolving tank; 203, motor; 204, carbon dioxide respirator; 205, magnetic flap level gauge two; 206, precision conductivity meter two; 207, hollow frame; 21, rotating assembly; 211, connecting column one; 212, rotating plate one; 213, connecting column two; 214, rotating plate two; 215, center column; 216, stirring blade; 217, arc tube; 218, right-angle tube; 22, reflux assembly; 221, connecting ring; 222, hollow column; 223, hollow ring; 224, water-passing plate; 225, nozzle. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1: See Figure 1-Figure 3 The present invention provides a technical solution: a microgram high-precision alkali solution alkali preparation device, comprising a bottom plate 1, an electric control cabinet 101 is fixedly connected to the top of the bottom plate 1, an instrument control cabinet 102 is fixedly connected to the top of the bottom plate 1, a support frame 103 is fixedly connected to the top of the bottom plate 1, a mother liquid tank 104 is fixedly connected to the inner wall of the support frame 103, a solid alkali filling port 105 is fixedly connected to the top of the mother liquid tank 104, a magnetic flap level gauge 106 is fixedly connected to the outer wall of the mother liquid tank 104, a connecting pipe 107 is fixedly connected to the bottom of the mother liquid tank 104, a valve 108 is fixedly connected to the outer wall of the connecting pipe 107, an end of the connecting pipe 107 away from the mother liquid tank 104 is fixedly connected to a delivery pump 109, a connecting pipe 2 1010 is fixedly connected to the top of the delivery pump 109, and an end of the connecting pipe 2 1010 away from the delivery pump 109 is fixedly connected to the dissolving tank 202.

[0035] The bottom of the mother liquid tank 104 is fixedly connected with a connecting pipe three 1011, and one end of the connecting pipe three 1011 away from the mother liquid tank 104 is fixedly connected to the dissolution tank 202, the outer wall of the mother liquid tank 104 is fixedly connected with a valve two 1012, the outer wall of the connecting pipe three 1011 is fixedly connected with a delivery pump two 1013, the bottom of the delivery pump two 1013 is fixedly connected to the bottom plate 1, and one end of the delivery pump two 1013 away from the connecting pipe three 1011 is fixedly connected with a discharge pipe one 1014. After the equipment completes the configuration of the alkali solution, start the delivery pump two 1013 and open the valve two 1012 to allow the waste liquid in the tank body to be discharged from the discharge pipe one 1014.

[0036] The top of the mother liquid tank 104 is fixedly connected to a connecting pipe four 1015, the top of the connecting pipe four 1015 is fixedly connected to a connecting pipe five 1016, the left and right ends of the outer wall of the connecting pipe five 1016 are fixedly connected to valves three 1017, the bottom of the left valve three 1017 is fixedly connected to a connecting pipe six 1018, and the bottom of the connecting pipe six 1018 is fixedly connected to the dissolution tank 202.

[0037] The bottom of the dissolution tank 202 is fixedly connected to a connecting pipe seven 1019, the outer wall of the connecting pipe seven 1019 is fixedly connected to a precision conductivity meter one 1020, the outer wall of the connecting pipe seven 1019 is fixedly connected to a metering pump 1021, the end of the metering pump 1021 away from the connecting pipe seven 1019 is fixedly connected to a connecting pipe eight 1022, the top of the connecting pipe eight 1022 is fixedly connected to a connecting pipe nine 1023, the top of the connecting pipe nine 1023 is fixedly connected to a pressure buffer tank 1024, the outer wall of the connecting pipe nine 1023 is fixedly connected to a valve four 1025, and the top of the dissolution tank 202 is fixedly connected to the connecting pipe nine 1023.

[0038] The working principle of this embodiment is as follows: when the alkali solution is prepared, the solid alkali will be delivered to the mother liquid tank 104 through the solid alkali filling port 105. At this time, the connecting pipe five 1016 delivers the desalted water into the equipment. As the valve three 1017 located at the top of the connecting pipe four 1015 is opened, the desalted water enters the mother liquid tank 104 and is mixed with the solid alkali and stirred. When the magnetic flap level gauge one 106 detects that the liquid level of the mother liquid tank 104 rises to the upper limit, the valve three 1017 is closed to stop the entry of the desalted water. Then, the agitator in the mother liquid tank 104 is started and automatically stops after running for 2 hours. After completing the stirring of the mother liquid tank 104, the solution is transported through the connecting pipe one 107 and the connecting pipe two 1010 under the transportation of the delivery pump one 109. It is sent to the dissolution component for dissolution, at which time the valve three 1017 on the top of the connecting pipe four 1015 will be closed, and another valve three 1017 will be opened to allow the deionized water to be sent into the dissolution tank 202. When the precision conductivity meter two 206 detects that the solution meets the standard, the valve three 1017 will be closed, and the motor 203 will automatically stop after 10 minutes. Then the metering pump 1021 will be started to transport the alkali solution to the connecting pipe seven 1019 and the connecting pipe eight 1022. If the solution concentration is qualified, the valve four 1025 at the end away from the dissolution tank 202 will be opened to discharge the solution from the equipment. If it is unqualified, the valve four 1025 close to the end of the dissolution tank 202 will be opened to re-transport the solution to the dissolution tank 202 for secondary processing.

[0039] Example 2: Based on Example 1, please refer to Figure 4-Figure 9 , the dissolution mechanism 2 includes a support frame 201, the inner wall of the support frame 201 is fixedly connected with a dissolution tank 202, the top of the dissolution tank 202 is fixedly connected with a motor 203, the top of the dissolution tank 202 is fixedly connected with a carbon dioxide respirator 204, the outer wall of the dissolution tank 202 is fixedly connected with a magnetic flap level gauge 205, the inner wall of the dissolution tank 202 is fixedly connected with a precision conductivity meter 206, the inner wall of the dissolution tank 202 is fixedly connected with a hollow frame 207, and the inner wall of the dissolution tank 202 is rotatably connected with a rotating component 21 through a bearing.

[0040] The rotating assembly 21 includes a connecting column 211, the top of which is rotatably connected to the dissolving tank 202 via a bearing, the output end of the motor 203 is fixedly connected to the connecting column 211, the bottom of the connecting column 211 is fixedly connected to a rotating plate 212, the outer wall of the rotating plate 212 is rotatably connected to the reflux assembly 22 via a bearing, the bottom of the rotating plate 212 is fixedly connected to a connecting column 213, the bottom of the connecting column 213 is fixedly connected to a rotating plate 214, the bottom of the rotating plate 214 is fixedly connected to a central column 215, the outer wall of the central column 215 is fixedly connected to a stirring blade 216, the bottom of the central column 215 is rotatably connected to the hollow frame 207 via a bearing, the inner wall of the central column 215 is fixedly connected to an arc tube 217, the bottom of the arc tube 217 is fixedly connected to a right-angle tube 218, and the outer wall of the right-angle tube 218 is fixedly connected to the central column 215.

[0041] The reflux assembly 22 includes a connecting ring 221, the outer wall of the connecting ring 221 is fixedly connected to the dissolving tank 202, the inner wall of the connecting ring 221 is fixedly connected to a hollow column 222, the end of the hollow column 222 away from the connecting ring 221 is fixedly connected to a hollow ring 223, the outer wall of the rotating plate 1 212 is rotatably connected to the hollow ring 223 through a bearing, the outer wall of the rotating plate 214 is rotatably connected to the hollow ring 223 through a bearing, the top of the hollow column 222 is fixedly connected to a water passing plate 224, and the bottom of the water passing plate 224 is fixedly connected to a nozzle 225.

[0042] The working principle of this embodiment is as follows: when the equipment stirs and mixes the solution in the dissolution tank 202, the starting motor 203 drives the connecting column 211 to rotate, and the rotating connecting column 211 drives the central column 215 to rotate through the rotating plate 212, the connecting column 213, and the rotating plate 214. The rotating central column 215 drives the stirring blade 216 to rotate, and then stirs the solution in the tank body. At the same time, the solution at the bottom of the tank body will enter the right-angle tube 218 under the action of inertia, and the liquid in the right-angle tube 218 will be transported from the arc tube 217 to the hollow ring 223 under the action of inertia. After that, the bottom solution is sprayed from the nozzle 225 to the top of the solution through the hollow column 222 and the water-passing plate 224, so as to ensure the full mixing of the solution and avoid the situation where the concentration of alkali solution at different positions is different, which will affect the subsequent production.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A microgram high-precision alkali solution preparation device, comprising a bottom plate (1), the top of the bottom plate (1) is fixedly connected to an electric control cabinet (101), the top of the bottom plate (1) is fixedly connected to an instrument control cabinet (102), the top of the bottom plate (1) is fixedly connected to a support frame (103), the inner wall of the support frame (103) is fixedly connected to a mother liquid tank (104), the top of the mother liquid tank (104) is fixedly connected to a solid alkali filling port (105), and the outer wall of the mother liquid tank (104) is fixedly connected to a magnetic flap liquid level gauge (106), characterized in that: Also includes: A dissolving mechanism (2), the dissolving mechanism (2) comprising a second support frame (201), the inner wall of the second support frame (201) being fixedly connected to a dissolving tank (202), the top of the dissolving tank (202) being fixedly connected to a motor (203), the top of the dissolving tank (202) being fixedly connected to a carbon dioxide respirator (204), the outer wall of the dissolving tank (202) being fixedly connected to a second magnetic flap level gauge (205), the inner wall of the dissolving tank (202) being fixedly connected to a second precision conductivity meter (206), the inner wall of the dissolving tank (202) being fixedly connected to a hollow frame (207), and the inner wall of the dissolving tank (202) being rotatably connected to a rotating assembly (21) via a bearing; The rotating assembly (21) comprises a connecting column (211), the top of the connecting column (211) is rotatably connected to the dissolving tank (202) via a bearing, the output end of the motor (203) is fixedly connected to the connecting column (211), the bottom of the connecting column (211) is fixedly connected to a rotating plate (212), the outer wall of the rotating plate (212) is rotatably connected to the reflux assembly (22) via a bearing, the bottom of the rotating plate (212) is fixedly connected to a connecting column (213), and the connecting column (213) is fixedly connected to the outer wall of the rotating plate (212). A rotating plate 2 (214) is fixedly connected to the bottom, a central column (215) is fixedly connected to the bottom of the rotating plate 2 (214), a stirring blade (216) is fixedly connected to the outer wall of the central column (215), the bottom of the central column (215) is rotatably connected to the hollow frame (207) via a bearing, an arc-shaped tube (217) is fixedly connected to the inner wall of the central column (215), a right-angle tube (218) is fixedly connected to the bottom of the arc-shaped tube (217), and the outer wall of the right-angle tube (218) is fixedly connected to the central column (215); The reflux assembly (22) comprises a connecting ring (221), the outer wall of the connecting ring (221) being fixedly connected to the dissolving tank (202), the inner wall of the connecting ring (221) being fixedly connected to a hollow column (222), one end of the hollow column (222) away from the connecting ring (221) being fixedly connected to a hollow ring (223), the outer wall of the rotating plate 1 (212) being rotatably connected to the hollow ring (223) via a bearing, the outer wall of the rotating plate 2 (214) being rotatably connected to the hollow ring (223) via a bearing, the top of the hollow column (222) being fixedly connected to a water passing plate (224), and the bottom of the water passing plate (224) being fixedly connected to a nozzle (225).

2. A microgram high-precision alkali solution preparation device according to claim 1, characterized in that: The bottom of the mother liquid tank (104) is fixedly connected to a connecting pipe 1 (107), the outer wall of the connecting pipe 1 (107) is fixedly connected to a valve 1 (108), the end of the connecting pipe 1 (107) away from the mother liquid tank (104) is fixedly connected to a delivery pump 1 (109), the top of the delivery pump 1 (109) is fixedly connected to a connecting pipe 2 (1010), and the end of the connecting pipe 2 (1010) away from the delivery pump 1 (109) is fixedly connected to the dissolution tank (202).

3. A microgram high-precision alkali solution preparation device according to claim 2, characterized in that: The bottom of the mother liquid tank (104) is fixedly connected to a connecting pipe three (1011), one end of the connecting pipe three (1011) away from the mother liquid tank (104) is fixedly connected to the dissolving tank (202), the outer wall of the mother liquid tank (104) is fixedly connected to a valve two (1012), the outer wall of the connecting pipe three (1011) is fixedly connected to a delivery pump two (1013), the bottom of the delivery pump two (1013) is fixedly connected to the bottom plate (1), and one end of the delivery pump two (1013) away from the connecting pipe three (1011) is fixedly connected to a discharge pipe one (1014).

4. A microgram high-precision alkali solution preparation device according to claim 3, characterized in that: The top of the mother liquid tank (104) is fixedly connected to a connecting pipe four (1015), the top of the connecting pipe four (1015) is fixedly connected to a connecting pipe five (1016), the left and right ends of the outer wall of the connecting pipe five (1016) are fixedly connected to valve three (1017), the bottom of the valve three (1017) on the left side is fixedly connected to a connecting pipe six (1018), and the bottom of the connecting pipe six (1018) is fixedly connected to the dissolving tank (202).

5. A microgram high-precision alkali solution preparation device according to claim 4, characterized in that: The bottom of the dissolving tank (202) is fixedly connected to a connecting pipe seven (1019), the outer wall of the connecting pipe seven (1019) is fixedly connected to a precision conductivity meter one (1020), the outer wall of the connecting pipe seven (1019) is fixedly connected to a metering pump (1021), the end of the metering pump (1021) away from the connecting pipe seven (1019) is fixedly connected to a connecting pipe eight (1022), the top of the connecting pipe eight (1022) is fixedly connected to a connecting pipe nine (1023), the top of the connecting pipe nine (1023) is fixedly connected to a pressure buffer tank (1024), the outer wall of the connecting pipe nine (1023) is fixedly connected to a valve four (1025), and the top of the dissolving tank (202) is fixedly connected to the connecting pipe nine (1023).

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