Device for measuring silicon content of potassium fluosilicate

Abstract

The utility model provides a device for measuring silicon content by using potassium fluosilicate, and relates to the technical field of silicon content detection. The device comprises a working table plate and a supporting frame used for supporting the working table plate. And a rotating table is rotationally arranged on the working table plate. A plurality of measuring cups are arranged on the working table plate around the rotating table, and a waste liquid bottle is arranged below the working table plate. The bottom of the measuring cup is connected with the waste liquid bottle through a liquid outlet pipe, and a control valve is arranged on the liquid outlet pipe. A potentiometric titrator and a mounting rod are arranged on the rotating table. And the mounting rod can slide up and down relative to the rotating table and can also rotate relative to the rotating table. A cantilever rod is arranged on the mounting rod, and a working part of the potentiometric titrator is arranged on the cantilever rod. The device not only can effectively improve the measuring work efficiency, but also can effectively improve the safety of the measuring process.

Description

Technical Field

[0001] This utility model relates to the field of silicon content detection technology, specifically to a device for determining the silicon content of potassium fluorosilicate. Background Technology

[0002] Potassium fluorosilicate titration is a commonly used chemical analysis method for determining silicon content, applicable to samples such as silicates, ores, and alloys. The principle is that silicon reacts with excess fluoride ions (F-) in an acidic medium to form fluorosilicic acid (H₂SiF₆), which further reacts with potassium ions to form potassium fluorosilicate (K₂SiF₆) precipitate. After washing, the precipitate hydrolyzes, releasing hydrofluoric acid (HF). The amount of HF is determined by titration with sodium hydroxide, indirectly calculating the silicon content. Therefore, when determining silicon content using potassium fluorosilicate, a large amount of hydrofluoric acid needs to be added, and the reaction product, potassium fluorosilicate, needs to be precipitated, filtered, and washed before potentiometric titration.

[0003] Currently, the determination of silicon content using potassium fluorosilicate still employs traditional methods, which require multiple material transfers during the determination process. This not only reduces work efficiency but also poses a danger during the transfer process due to the large amount of hydrofluoric acid used in the determination. Utility Model Content

[0004] To address the aforementioned issues, this application provides an apparatus for determining the silicon content of potassium fluorosilicate, which not only effectively improves the efficiency of the determination process but also enhances its safety.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An apparatus for determining the silicon content of potassium fluorosilicate includes a worktable and a support frame for supporting the worktable.

[0007] A rotating platform is rotatably mounted on the workbench.

[0008] A number of measuring cups are arranged around the rotating table on the workbench, and a waste liquid bottle is arranged below the workbench.

[0009] The bottom of the measuring cup is connected to the waste liquid bottle via a liquid outlet pipe, and a control valve is provided on the liquid outlet pipe.

[0010] The rotating platform is equipped with a potentiometric titrator and a mounting rod;

[0011] The mounting rod can slide up and down relative to the rotating platform, and can also rotate relative to the rotating platform.

[0012] The mounting rod is equipped with a cantilever rod, and the working parts of the potentiometric titrator are mounted on the cantilever rod.

[0013] Furthermore, the workbench is equipped with a cleaning component, which includes a main pipe with an inlet pipe connected to a storage tank for holding cleaning fluid. A delivery pump is installed on the pipeline. The main pipe has branch pipes corresponding to the measuring cups, each with an outlet hole. Several support rods are located below the main pipe to support it. The workbench has a set of insertion holes corresponding to the support rods, including a first insertion hole and a second insertion hole. When a support rod is inserted into the first insertion hole, the branch pipe aligns with the corresponding measuring cup; when the support rod is inserted into the second insertion hole, the branch pipe is positioned between two adjacent measuring cups.

[0014] Furthermore, the support rod includes a rod body and a buckle located at the upper end of the rod body. The rod body includes a first shaft segment, a second shaft segment, and a third shaft segment with progressively increasing diameters from bottom to top. The diameter of the first insertion hole is greater than or equal to the diameter of the first shaft segment but less than the diameter of the second shaft segment. The diameter of the second insertion hole is greater than or equal to the diameter of the second shaft segment but less than the diameter of the third shaft segment. When the support rod is inserted into the second insertion hole, the upper end of the cleaning component is located below the mouth of the measuring cup.

[0015] Furthermore, the workbench is provided with a number of positioning holes that cooperate with the mounting rod, and the positioning holes correspond one-to-one with the measuring cup.

[0016] Furthermore, a baffle is provided on the mounting rod between the worktable and the rotating table, and the baffle determines the limit position of the vertical movement of the mounting rod.

[0017] Furthermore, a support plate is provided on the rotating platform, and a groove is provided at the upper end of the support plate to cooperate with the cantilever rod. When the cantilever rod is inserted into the groove, the working part of the potentiometric titrator provided on the cantilever rod is located inside the area formed by the measuring cup.

[0018] Furthermore, the waste liquid bottle has a sealed structure, the lower end of the liquid outlet pipe is sealed to the waste liquid bottle, and the waste liquid bottle is provided with a vent pipe, which is connected to a vacuum pump through a pipeline.

[0019] Furthermore, the measuring cup includes a cup body, and a partition is provided inside the cup body near the bottom of the cup body, and the partition is provided with multiple leakage holes.

[0020] Furthermore, the workbench is provided with limiting grooves that correspond one-to-one with the measuring cups.

[0021] Furthermore, the rotary table is rotatably connected to the worktable via a thrust ball bearing. The upper side of the worktable is provided with a mounting groove, and the seat ring of the thrust ball bearing is located in the mounting groove and is fixedly connected to the worktable via an interference fit. The rotary table includes a rotating plate, and the lower side of the rotating plate is provided with a mounting cylinder. The mounting cylinder is inserted into the shaft ring of the thrust ball bearing and is fixedly connected to the shaft ring of the thrust ball bearing via an interference fit.

[0022] The beneficial effects of this utility model are:

[0023] By employing the apparatus for determining the silicon content of potassium fluorosilicate according to the embodiments provided in this application, continuous operation of sample dissolution, precipitation filtration, washing and titration can be achieved. No material transfer is required during the determination process, which not only effectively improves the efficiency of the determination work, but also improves the safety of the determination process. Attached Figure Description

[0024] Figure 1 A three-dimensional structural schematic diagram of an apparatus for determining silicon content using potassium fluorosilicate, provided in an embodiment of this application;

[0025] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;

[0026] Figure 3 A top view of an apparatus for determining silicon content using potassium fluorosilicate, provided in an embodiment of this application;

[0027] Figure 4 for Figure 3 AA section view in the middle;

[0028] Figure 5 for Figure 4 A magnified structural diagram of part B in the middle section;

[0029] Figure 6 for Figure 4 A magnified structural diagram of section C;

[0030] Figure 7 for Figure 3 BB section view in the middle;

[0031] Figure 8 for Figure 7 A magnified structural diagram of section D in the middle;

[0032] Figure 9 This is a schematic diagram of the three-dimensional structure of the workbench.

[0033] Figure 10 This is a three-dimensional structural diagram of the cleaning component;

[0034] Figure 11 This is a schematic diagram of the structure when the mounting rod is lifted;

[0035] Figure 12 This is a schematic diagram of the potentiometric titrator when it is not in operation.

[0036] Figure 13 This is a schematic diagram of the structure when the support rod is inserted into the first insertion hole.

[0037] In the diagram: 1. Workbench; 11. Ear; 111. Mounting hole; 12. Mounting groove; 13. First clearance hole; 14. Positioning hole; 151. First insertion hole; 152. Second insertion hole; 16. Second clearance hole; 17. Limiting groove;

[0038] 2. Support frame; 21. Column; 211. Base plate; 22. Connecting rod;

[0039] 3. Tighten the screw; 31. Handwheel;

[0040] 4. Rotating table; 41. Rotating plate; 42. Mounting cylinder; 43. Support plate; 431. Groove;

[0041] 5. Thrust ball bearing; 51. Seat ring; 52. Shaft ring;

[0042] 61. Measuring cup; 611. Cup body; 612. First connecting pipe; 613. Partition; 621. Waste liquid bottle; 622. Sealing plug; 623. Second connecting pipe; 624. Gas outlet pipe; 63. Control valve; 64. Flexible hose;

[0043] 7. Potentiometric titrator; 71. Electrode; 72. Injection tube; 73. Stirring device;

[0044] 81. Mounting rod; 811. Baffle; 82. Cantilever rod; 821. Mounting block;

[0045] 91. Main pipe; 911. Inlet pipe; 912. Branch pipe; 9121. First vertical section; 9122. Horizontal section; 9123. Second vertical section; 9124. Outlet hole; 92. Support rod; 921. Rod body; 9211. First shaft section; 9212. Second shaft section; 9213. Third shaft section; 922. Buckle. Detailed Implementation

[0046] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. The described embodiments are merely a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the protection scope of this application.

[0047] like Figure 1 , Figure 3 and Figure 4 As shown, an apparatus for determining the silicon content of potassium fluorosilicate includes a worktable 1 and a support frame 2 for supporting the worktable 1.

[0048] In one specific embodiment, the workbench 1 in this example has a circular structure, and the support frame 2 includes a plurality of columns 21, which are evenly arranged circumferentially around the axis of the workbench 1. The workbench 1 is provided with mounting holes 111 corresponding to each column 21, and the upper end of each column 21 extends through the corresponding mounting hole 111 to the top of the workbench 1. The side of the workbench 1 is provided with tightening screws 3 corresponding to each column 21, which are tightened onto the corresponding column 21, thereby achieving the connection and fixation between the column 21 and the workbench 1. For example, the support frame 2 includes three columns 21.

[0049] Furthermore, the edge of the workbench 1 is provided with ear parts 11 that correspond one-to-one with the column 21, and the mounting holes 111 are provided on the ear parts 11.

[0050] Furthermore, a foot plate 211 is provided at the lower end of the column 21, and a handwheel 31 is provided at the end of the tightening screw 3 away from the workbench plate 1.

[0051] Furthermore, a connecting rod 22 is provided between two adjacent columns 21. Preferably, the connecting rod 22 has an arc-shaped structure, and all the connecting rods 22 together form a circular structure arranged coaxially with the worktable 1.

[0052] like Figure 1 , Figure 3 and Figure 4 As shown, a rotating platform 4 is provided on the workbench 1, and the rotating platform 4 is rotatably connected to the workbench 1.

[0053] In one specific implementation, the rotating table 4 described in this embodiment has a circular structure and is arranged coaxially with the worktable 1.

[0054] As one specific implementation method, such as Figure 4 , Figure 6 and Figure 9 As shown, in this embodiment, the rotating table 4 is rotatably connected to the worktable 1 via a thrust ball bearing 5. A circular mounting groove 12 is provided on the upper side of the worktable 1. The seat ring 51 of the thrust ball bearing 5 is located within the mounting groove 12 and is fixedly connected to the worktable 1 via an interference fit. The rotating table 4 includes a circular rotating plate 41. A mounting cylinder 42, coaxially arranged with the rotating plate 41, is provided on the lower side of the rotating plate 41. The mounting cylinder 42 is inserted into the shaft ring 52 of the thrust ball bearing 5 and is fixedly connected to the shaft ring 52 of the thrust ball bearing 5 via an interference fit.

[0055] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, a plurality of measuring cups 61 are evenly distributed circumferentially around the rotating platform 4 on the workbench 1. A waste liquid bottle 621 for collecting waste liquid is disposed below the workbench 1. Each measuring cup 61 has a liquid outlet pipe at its bottom. One end of the liquid outlet pipe is connected to the measuring cup 61, and the other end of the liquid outlet pipe passes through the workbench 1 and is connected to the waste liquid bottle 621. The workbench 1 is provided with a first clearance hole 13 for avoiding the liquid outlet pipe. Each liquid outlet pipe is provided with a control valve 63.

[0056] In one specific embodiment, 12 measuring cups 61 are evenly distributed around the rotating table 4 in the circumferential direction on the workbench 1.

[0057] In one specific embodiment, the measuring cup 61 described in this embodiment includes a cup body 611. A first connecting pipe 612, communicating with the internal space of the cup body 611, is provided at the bottom of the cup body 611, and the first connecting pipe 612 and the cup body 611 are integrally formed. A flexible tube 64 is provided below the first connecting pipe 612. The first connecting pipe 612 is connected to the flexible tube 64 via a control valve 63. The lower end of the flexible tube 64 is connected to the waste liquid bottle 621. Specifically, the inlet of the control valve 63 is inserted into the first connecting pipe 612 and sealed and fixedly connected thereto, while the outlet of the control valve 63 is inserted into the flexible tube 64 and sealed and fixedly connected thereto.

[0058] like Figure 1 and Figure 2As shown, a potentiometric titrator 7 is placed on the rotating platform 4. A mounting rod 81 is provided on one side of the potentiometric titrator 7 on the rotating platform 4. The mounting rod 81 can slide up and down relative to the rotating platform 4 and can also rotate relative to the rotating platform 4. In one specific embodiment, the rotating plate 41 of the rotating platform 4 is provided with a guide hole penetrating through the rotating plate 41 in a vertical direction, and the lower end of the mounting rod 81 is inserted into the guide hole. A cantilever rod 82 is provided on the mounting rod 81, extending outward perpendicularly to the mounting rod 81 (with the side furthest from the center of the rotating plate 41 as the outer side). The working parts of the potentiometric titrator 7 are detachably fixed to the cantilever rod 82, facing downward.

[0059] The potentiometric titrator 7 mentioned above is existing technology and can be purchased directly from external suppliers. As a specific implementation, the potentiometric titrator 7 in this embodiment is a ZDJ-5B automatic potentiometric titrator 7 manufactured by Shanghai Yifen Scientific Instruments Co., Ltd.

[0060] The working components of the potentiometric titrator 7 include an electrode 71, a liquid injection tube 72, and a stirring element 73. As one specific embodiment, such as... Figure 2 As shown, in this embodiment, the suspended end of the cantilever rod 82 is provided with a circular mounting block 821. For example, the mounting block 821 is fixedly connected to the cantilever rod 82 by welding. The mounting block 821 is provided with mounting holes corresponding to the electrode 71, the liquid injection pipe 72, and the stirring element 73.

[0061] Furthermore, such as Figure 6 and Figure 9 As shown, the bottom surface of the mounting groove 12 of the worktable 1 has a plurality of positioning holes 14 evenly distributed around the circumference to mate with the mounting rod 81, and each positioning hole 14 corresponds one-to-one with the measuring cup 61. A baffle 811 is provided on the mounting rod 81 between the worktable 1 and the rotating table 4, and the baffle 811 determines the limit position of the vertical movement of the mounting rod 81. When the lower end of the mounting rod 81 is inserted into a positioning hole 14, the vertical plane determined by the axis of the measuring cup 61 corresponding to the positioning hole 14 and the axis of the mounting rod 81 passes through the axis of the rotating table 4.

[0062] The reason for this design is that during the titration operation, the mounting rod 81 will insert into the corresponding positioning hole 14 under its own weight. At this time, the rotating stage 4 is locked relative to the worktable 1, meaning that the rotating stage 4 cannot rotate. This avoids the rotating stage 4 from rotating due to accidental contact during the titration process, thereby preventing the working parts of the potentiometric titrator 7 from colliding with the measuring cup 61.

[0063] Furthermore, such as Figure 2 , Figure 3 and Figure 12 As shown, a support plate 43 is provided on the rotating platform 4, and a groove 431 is provided at the upper end of the support plate 43. When the cantilever rod 82 is inserted into the groove 431, the working part of the potentiometric titrator 7 provided on the cantilever rod 82 is located inside the area formed by the measuring cup 61, and the lower end face of the working part of the potentiometric titrator 7 is located above the rotating platform 4 (i.e., the working part of the potentiometric titrator 7 is in a suspended state), and the lower end of the mounting rod 81 is detached from the working table plate 1. At this time, the rotating platform 4 can rotate freely. As a specific embodiment, in this embodiment, when the cantilever rod 82 is inserted into the groove 431, the vertical plane formed by the axis of the cantilever rod 82, the axis of the mounting rod 81, and the axis of the working table plate 1 is perpendicular to the vertical plane formed by the axis of the cantilever rod 82, the axis of the mounting rod 81, and the axis of the working table plate 1.

[0064] Furthermore, such as Figure 1 , Figure 3 , Figure 9 and Figure 10 As shown, a cleaning component is provided on the workbench 1. The cleaning component includes a main pipe 91 with a circular structure. An inlet pipe 911 is provided on the main pipe 91, and the inlet pipe 911 is connected to a storage tank (not shown) via a pipeline (not shown). The storage tank contains cleaning fluid, and a delivery pump (not shown) is provided on the pipeline to pump the cleaning fluid from the storage tank into the main pipe 91. The main pipe 91 has several branch pipes 912 corresponding one-to-one with the measuring cup 61. One end of each branch pipe 912 is connected to the main pipe 91, and the other end of each branch pipe 912 has a liquid outlet 9124.

[0065] In one specific embodiment, the branch pipe 912 in this embodiment includes a first vertical portion 9121, the lower end of which is connected to the main pipe 91. The upper end of the first vertical portion 9121 is provided with a horizontal portion 9122 extending radially inward (with the side closest to the center of the main pipe 91 as the inner side). The inner end of the horizontal portion 9122 is provided with a second vertical portion 9123 extending downward perpendicularly to the horizontal portion 9122. The lower end of the second vertical portion 9123 is a blind end, and a liquid outlet hole 9124 is provided on the blind end.

[0066] Furthermore, the liquid outlet end of the branch pipe 912 (i.e., the lower end of the second vertical part 9123) has a spherical structure, and multiple liquid outlet holes 9124 are evenly distributed on the liquid outlet end of the branch pipe 912. In this way, the cleaning fluid can be evenly sprayed out through the liquid outlet holes 9124, thereby forming a uniform spraying effect and improving the uniformity of cleaning.

[0067] Several support rods 92 are evenly distributed along the circumference below the main tube 91, and the upper end of the support rod 92 is provided with a support groove that cooperates with the main tube 91.

[0068] In one specific embodiment, the support rod 92 in this example includes a rod body 921 and an arc-shaped buckle 922 located at the upper end of the rod body 921. For example, the buckle 922 is made of a material with a certain degree of elasticity, such as plastic, and the central angle corresponding to the buckle 922 is greater than 180°. The main tube 91 is snapped into the buckle 922, at which point the buckle 922 is tightened onto the main tube 91, thereby fixing the main tube 91.

[0069] The workbench 1 is provided with a plurality of insertion hole groups corresponding one-to-one with the support rod 92. The insertion hole groups include a first insertion hole 151 and a second insertion hole 152. When the support rod 92 is inserted into the first insertion hole 151, the branch tube 912 is aligned with the corresponding measuring cup 61, and the liquid outlet end of the branch tube 912 is inserted into the corresponding measuring cup 61; when the support rod 92 is inserted into the second insertion hole 152, the liquid outlet end of the branch tube 912 is located between two adjacent measuring cups 61.

[0070] By setting up a cleaning component, the sediment in each measuring cup 61 can be cleaned simultaneously, which facilitates multiple parallel measurements and improves work efficiency.

[0071] Furthermore, such as Figure 5As shown, the rod body 921 comprises, from bottom to top, a first shaft segment 9211, a second shaft segment 9212, and a third shaft segment 9213, with the diameters of the first shaft segment 9211, the second shaft segment 9212, and the third shaft segment 9213 increasing sequentially. A first stepped surface is formed between the first shaft segment 9211 and the second shaft segment 9212, and a second stepped surface is formed between the second shaft segment 9212 and the third shaft segment 9213. The diameter of the first insertion hole 151 is greater than or equal to the diameter of the first shaft segment 9211 but less than the diameter of the second shaft segment 9212; the diameter of the second insertion hole 152 is greater than or equal to the diameter of the second shaft segment 9212 but less than the diameter of the third shaft segment 9213. Figure 13 As shown, when the support rod 92 is inserted into the first insertion hole 151, the first stepped surface abuts against the workbench 1; Figure 1 and Figure 7 As shown, when the support rod 92 is inserted into the second insertion hole 152, the second step surface abuts against the workbench 1, and the upper end of the cleaning component is located below the mouth of the measuring cup 61, that is, the horizontal part 9122 of the branch pipe 912 is located below the mouth of the measuring cup 61.

[0072] Thus, when the support rod 92 is inserted into the second insertion hole 152, since the upper end of the cleaning component is located below the mouth of the measuring cup 61, there are no parts in the space above the measuring cup 61, which makes it convenient to rotate the rotating table 4 to titrate the measuring cups 61 one by one.

[0073] Furthermore, such as Figure 9 and Figure 13 As shown, a second clearance hole 16 is provided between two adjacent measuring cups 61 to allow the second vertical portion 9123 of the branch pipe 912 to pass. Figure 8 As shown, when the support rod 92 is inserted into the second insertion hole 152, the lower end of the second vertical part 9123 of the branch pipe 912 is inserted into the corresponding second clearance hole 16.

[0074] Furthermore, such as Figure 9 As shown, the workbench 1 is provided with limiting grooves 17 corresponding to the measuring cups 61. The diameter of the limiting grooves 17 is equal to the diameter of the measuring cups 61. The first clearance hole 13 is provided on the bottom surface of the corresponding limiting groove 17.

[0075] The operating procedure of the device for determining the silicon content of potassium fluorosilicate provided in this application is as follows:

[0076] First, filter paper and the sample to be tested are placed in each measuring cup 61, and hydrofluoric acid and saturated potassium nitrate solution are added to each measuring cup 61 in sequence. After standing at room temperature for a period of time, the control valve 63 is opened. At this time, the liquid will enter the waste liquid bottle 621 through the outlet tube, while the potassium fluorosilicate (K2SiF6) precipitate formed by the reaction will remain in the measuring cup 61, thus completing the filtration operation.

[0077] Second, lift the cleaning component upwards so that the support rod 92 is pulled out from the second insertion hole 152. Then rotate the cleaning component at a certain angle so that the support rod 92 of the cleaning component is aligned with the first insertion hole 151. Then insert the support rod 92 into the first insertion hole 151.

[0078] Third, close the control valve 63, turn on the delivery pump, and simultaneously add cleaning solution to each measuring cup 61 through the cleaning component to clean the potassium fluorosilicate (K2SiF6) precipitate generated in the first step. After cleaning for a period of time, open the control valve 63 to allow the cleaning solution to flow into the waste liquid bottle 621.

[0079] Fourth, repeat step three to wash the precipitate 5-6 times.

[0080] Fifth, lift the cleaning component upwards so that the support rod 92 is pulled out from the first insertion hole 151. Then rotate the cleaning component in the opposite direction by a certain angle so that the support rod 92 of the cleaning component is aligned with the second insertion hole 152. Then insert the support rod 92 into the second insertion hole 152.

[0081] Sixth, add boiled neutral water to a measuring cup 61, then pull up the mounting rod 81 and rotate the rotating platform 4 to align the mounting rod 81 with the positioning hole 14 of the measuring cup 61 to be titrated. Keeping the rotating platform 4 stationary, rotate the mounting rod 81 to move the working part on the cantilever rod 82 above the measuring cup 61 to be titrated. Move the mounting rod 81 downwards so that its lower end is inserted into the positioning hole 14 corresponding to the measuring cup 61 to be titrated. Simultaneously, the working part of the potentiometric titrator 7 is also inserted into the measuring cup 61 to be titrated. Then, turn on the potentiometric titrator 7 to perform the titration.

[0082] Seventh, repeat the operation of step six to titrate the samples in the remaining measuring cups 61 in turn.

[0083] Eighth, after completing all titration operations, lift the mounting plate upwards, then keep the rotating table 4 stationary, rotate the mounting rod 81 so that the cantilever rod 82 is above the support plate 43, and then move the mounting rod 81 downwards until the cantilever rod 82 abuts against the support plate 43.

[0084] Furthermore, the waste liquid bottle 621 has a sealed structure, and the lower end of each outlet pipe is sealed to the waste liquid bottle 621. The waste liquid bottle 621 is provided with a vent pipe 624, which is connected to a vacuum pump (not shown in the figure) via a pipeline (not shown in the figure).

[0085] The advantage of this design is that during filtration and cleaning, a vacuum pump can be turned on to create negative pressure inside the waste liquid bottle 621, thereby achieving a suction filtration effect and shortening the filtration and cleaning time.

[0086] As one specific implementation method, such as Figure 4 and Figure 7 As shown, in this embodiment, the waste liquid bottle 621 is a conical bottle, and a sealing plug 622 is provided at the opening of the waste liquid bottle 621. A rigid second connecting tube 623, corresponding one-to-one with the flexible tube 64, is provided on the sealing plug 622. The lower end of the second connecting tube 623 is inserted into the sealing plug 622 and sealed to it. The upper end of the second connecting tube 623 is inserted into the corresponding flexible tube 64 and sealed to it. The first connecting tube 612, the flexible tube 64, and the second connecting tube 623 together form the liquid outlet pipe. The lower end of the vent pipe 624 is inserted into the sealing plug 622 and sealed to it. The upper end of the vent pipe 624 is connected to the vacuum pump via a pipeline.

[0087] Furthermore, a partition 613 is provided inside the cup body 611 near the bottom of the cup body 611, and the partition 613 is evenly distributed with leakage holes.

[0088] By setting the partition 613, a negative pressure chamber connected to the waste liquid bottle 621 can be formed at the bottom of the measuring cup 61 during the filtration process, so that the filter paper can be evenly permeated on the entire surface of the partition 613. This can improve the efficiency of filtration on the one hand, and ensure the uniformity of filtration on the other hand, avoiding incomplete filtration in some areas and residual liquid.

[0089] Other embodiments obtained by those skilled in the art based on the embodiments provided in this application by combining, splitting, or reorganizing the embodiments of this application do not exceed the protection scope of this application.

[0090] The above detailed embodiments have provided a detailed explanation of the purpose, technical solutions, and beneficial effects of the embodiments of this application. The above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. That is, any modifications, equivalent substitutions, improvements, etc., made on the basis of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. An apparatus for determining the silicon content of potassium fluorosilicate, characterized in that: It includes a worktable (1) and a support frame (2) for supporting the worktable (1); A rotating table (4) is rotatably mounted on the workbench plate (1); A plurality of measuring cups (61) are arranged around the rotating table (4) on the workbench (1), and a waste liquid bottle (621) is arranged below the workbench (1); The bottom of the measuring cup (61) is connected to the waste liquid bottle (621) through a liquid outlet pipe, and a control valve (63) is provided on the liquid outlet pipe. The rotating stage (4) is equipped with a potentiometric titrator (7) and a mounting rod (81); The mounting rod (81) can slide up and down relative to the rotating platform (4) and rotate relative to the rotating platform (4); The mounting rod (81) is provided with a cantilever rod (82), and the working part of the potentiometric titrator (7) is provided on the cantilever rod (82).

2. The apparatus for determining silicon content in potassium fluorosilicate according to claim 1, characterized in that: The workbench (1) is equipped with a cleaning component, which includes a main pipe (91) and an inlet pipe (911) on the main pipe (91). The inlet pipe (911) is connected to a storage tank for holding cleaning fluid via a pipeline. A delivery pump is installed on the pipeline. The main pipe (91) is equipped with branch pipes (912) corresponding to the measuring cups (61) one by one. The branch pipes (912) are equipped with outlet holes (9124). Several outlet holes for cleaning the main pipe (91) are provided below the main pipe (91). 1) A support rod (92) for support. The worktable (1) is provided with a set of insertion holes corresponding to the support rod (92). The set of insertion holes includes a first insertion hole (151) and a second insertion hole (152). When the support rod (92) is inserted into the first insertion hole (151), the branch tube (912) is aligned with the corresponding measuring cup (61). When the support rod (92) is inserted into the second insertion hole (152), the branch tube (912) is located between two adjacent measuring cups (61).

3. The apparatus for determining silicon content in potassium fluorosilicate according to claim 2, characterized in that: The support rod (92) includes a rod body (921) and a buckle (922) located at the upper end of the rod body (921). The rod body (921) includes, from bottom to top, a first shaft segment (9211), a second shaft segment (9212), and a third shaft segment (9213) with progressively increasing diameters. The diameter of the first insertion hole (151) is greater than or equal to the diameter of the first shaft segment (9211) and less than the diameter of the second shaft segment (9212). The diameter of the second insertion hole (152) is greater than or equal to the diameter of the second shaft segment (9212) and less than the diameter of the third shaft segment (9213). When the support rod (92) is inserted into the second insertion hole (152), the upper end of the cleaning component is located below the mouth of the measuring cup (61).

4. The apparatus for determining silicon content in potassium fluorosilicate according to claim 1, characterized in that: The workbench (1) is provided with a number of positioning holes (14) that cooperate with the mounting rod (81), and the positioning holes (14) correspond one-to-one with the measuring cup (61).

5. The apparatus for determining silicon content in potassium fluorosilicate according to claim 4, characterized in that: A baffle (811) is provided on the mounting rod (81) between the worktable (1) and the rotating table (4), and the baffle (811) determines the limit position of the vertical movement of the mounting rod (81).

6. The apparatus for determining silicon content in potassium fluorosilicate according to claim 1, characterized in that: The rotating platform (4) is provided with a support plate (43), and the upper end of the support plate (43) is provided with a groove (431) that cooperates with the cantilever rod (82). When the cantilever rod (82) is inserted into the groove (431), the working part of the potentiometric titrator (7) provided on the cantilever rod (82) is located inside the area formed by the measuring cup (61).

7. The apparatus for determining silicon content in potassium fluorosilicate according to claim 1, characterized in that: The waste liquid bottle (621) is a sealed structure. The lower end of the liquid outlet pipe is sealed to the waste liquid bottle (621). The waste liquid bottle (621) is provided with a gas outlet pipe (624), which is connected to a vacuum pump through a pipeline.

8. The apparatus for determining silicon content in potassium fluorosilicate according to claim 7, characterized in that: The measuring cup (61) includes a cup body (611), and a partition (613) is provided inside the cup body (611) near the bottom of the cup body (611). The partition (613) is provided with a plurality of leakage holes.

9. The apparatus for determining silicon content in potassium fluorosilicate according to claim 1, characterized in that: The workbench (1) is provided with limiting grooves (17) that correspond one-to-one with the measuring cup (61).

10. The apparatus for determining silicon content in potassium fluorosilicate according to claim 1, characterized in that: The rotating table (4) is rotatably connected to the worktable (1) via a thrust ball bearing (5). The upper side of the worktable (1) is provided with a mounting groove (12). The seat ring (51) of the thrust ball bearing (5) is located in the mounting groove (12) and is fixedly connected to the worktable (1) by an interference fit. The rotating table (4) includes a rotating plate (41). The lower side of the rotating plate (41) is provided with a mounting cylinder (42). The mounting cylinder (42) is inserted into the shaft ring (52) of the thrust ball bearing (5) and is fixedly connected to the shaft ring (52) of the thrust ball bearing (5) by an interference fit.

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