High-purity sulfuric acid filter

Abstract

The utility model discloses a high-purity sulfuric acid filter and relates to the technical field of high-purity sulfuric acid filtration. The high-purity sulfuric acid filtering device comprises a filtering box, a partition plate is fixedly installed on the inner wall of the bottom of the filtering box and divides the interior of the filtering box into a main liquid storage cavity and an auxiliary liquid storage cavity, and the main liquid storage cavity and the auxiliary liquid storage cavity are both used for storing filtered high-purity sulfuric acid. And a first liquid discharge pipe and a second liquid discharge pipe fixedly penetrate through one side of the main liquid storage cavity and one side of the auxiliary liquid storage cavity respectively. According to the utility model, through the innovative design of the material storage assembly, the problems of improper impurity collection and treatment are effectively solved, the risks of resource waste and secondary pollution are reduced, meanwhile, the frequency of replacing and cleaning the filter screen is reduced, the operation difficulty is reduced, and the production efficiency is improved; and due to the arrangement of a scraper and an inclined panel, the impurity collecting efficiency is further improved, and the maximization of the filtering effect is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-purity sulfuric acid filtering, in particular to a high-purity sulfuric acid filter. Background Art

[0002] In the chemical, pharmaceutical, and electronics industries, high-purity sulfuric acid is an important basic raw material, and its purity and quality have a crucial impact on the performance of the final product. Therefore, filtering high-purity sulfuric acid to remove impurities and improve its purity is an indispensable part of the production process. However, traditional sulfuric acid filters still have some problems and are difficult to meet the demand for high-purity sulfuric acid in modern industrial production.

[0003] Traditional sulfuric acid filters often lack an effective collection and treatment mechanism for filtered impurities, which can easily cause secondary pollution or waste of resources. In addition, some filters require frequent replacement of filters or cleaning of impurities during operation, which not only increases the difficulty of operation but also affects production efficiency.

[0004] At the same time, high-purity sulfuric acid often remains among the impurities filtered out, which easily leads to waste of high-purity sulfuric acid. In addition, the subsequent treatment of the impurities also requires more resources and is costly. Utility Model Content

[0005] The purpose of the utility model is to provide a high-purity sulfuric acid filter. In the utility model, through the innovative design of the storage component, the problem of improper impurity collection and treatment is effectively solved, and the risk of resource waste and secondary pollution is reduced. At the same time, the device reduces the frequency of filter replacement and cleaning, reduces the difficulty of operation, and improves production efficiency. In addition, the setting of the scraper and the inclined plate further improves the impurity collection efficiency, ensures the maximization of the filtering effect, and solves the existing technical problems.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] A high-purity sulfuric acid filter, comprising:

[0008] A filter box, wherein a partition is fixedly installed on the inner wall of the bottom of the filter box, and the partition divides the interior of the filter box into two areas: a main liquid storage chamber and an auxiliary liquid storage chamber. The main liquid storage chamber and the auxiliary liquid storage chamber are both used to store high-purity sulfuric acid after filtration. A first liquid discharge pipe and a second liquid discharge pipe are fixedly penetrated on one side of the main liquid storage chamber and the auxiliary liquid storage chamber, respectively. The first liquid discharge pipe and the second liquid discharge pipe are both provided with valves, and the first liquid discharge pipe and the second liquid discharge pipe are used to discharge the high-purity sulfuric acid after filtration;

[0009] It also includes a liquid inlet pipe, one end of which is fixedly connected to two collecting pipes, the outer walls of the two collecting pipes are fixedly connected to a plurality of liquid outlet pipes, one end of the plurality of liquid outlet pipes are fixedly passed through the top of the filter box and extend into the main liquid storage cavity, and the plurality of liquid outlet pipes are used for uniform input of high-purity sulfuric acid;

[0010] It also includes a filtering component, which is used to filter the input high-purity sulfuric acid and clean and collect the filtered impurities;

[0011] It also includes a storage component, which is used to centrally store the filtered impurities and discharge and collect the high-purity sulfuric acid remaining in the impurities.

[0012] Optionally, the filter assembly includes two rollers rotatably arranged inside the filter box, a filter screen is transmission-connected between the two rollers, the filter screen is used to filter high-purity sulfuric acid entering the main liquid storage chamber, one end of the filter screen extends into the auxiliary liquid storage chamber, and is used to discharge filtered impurities, one end of the roller shaft close to the auxiliary liquid storage chamber rotates and passes through one side of the filter box, a side protective shell is fixedly installed on one side of the filter box, a motor is fixedly installed on the inner wall of one side of the side protective shell, the output shaft of the motor is fixedly connected to one end of the adjacent roller shaft, and is used to drive the filter screen to move continuously, and two second baffles are fixedly installed on the inner wall of one side of the main liquid storage chamber, and the two second baffles are both matched with the filter screen, and are used to shield one end of the filter screen.

[0013] Optionally, the material storage assembly includes a mounting frame slidably arranged on the inner wall of the auxiliary liquid storage chamber, a collecting box is slidably arranged inside the mounting frame, the collecting box is used to collect filtered impurities, a plurality of filter holes are provided at the bottom of the collecting box, which are used to allow high-purity sulfuric acid remaining in the impurities to drip and discharge under the influence of gravity, a sewage cleaning port is provided on one side of the filter box, the sewage cleaning port is communicated with the auxiliary liquid storage chamber and cooperates with the collecting box, and the sewage cleaning port is used to take out the collecting box.

[0014] Optionally, the same rotating shaft is rotatably connected between the inner walls on both sides of the auxiliary liquid storage chamber, and both ends of the rotating shaft rotate and pass through both sides of the filter box, and one end of the rotating shaft located in the side protective shell is fixedly installed with a second synchronous wheel, and the outer wall of one end of the roller shaft of the adjacent rotating shaft is fixedly sleeved with a first synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected through a synchronous belt transmission, and a plurality of cams are fixedly installed on the outer wall of the rotating shaft, and the plurality of cams are all located in the auxiliary liquid storage chamber and cooperate with the bottom of the collecting box to drive the collecting box to move up and down, and two fixed blocks are fixedly installed on the inner wall of one side of the auxiliary liquid storage chamber, and springs are fixedly installed on the bottom of the two fixed blocks, and the other ends of the two springs are fixedly connected to the top of the mounting frame.

[0015] Optionally, a scraper is fixedly installed on one side of the partition close to the auxiliary liquid storage chamber, and the scraper cooperates with the surface of the filter to scrape off impurities remaining on the filter. An inclined panel is fixedly installed on the top of the mounting frame, and the inclined panel is located below the scraper to allow the scraped impurities to smoothly enter the collection box.

[0016] Optionally, an adjusting ring is fixedly mounted on one end of the rotating shaft away from the side protective shell, and the adjusting ring is used to adjust the rotating shaft externally to ensure that the collection box can be taken out smoothly.

[0017] Optionally, a first baffle is slidably penetrated through the top of the filter box, and the bottom of the first baffle is slidably matched with the surface of the filter screen. The top of the filter box is rotatably connected to a screw, and the screw is threadedly connected to the first baffle. The first baffle is used to block impurities on the filter screen when necessary.

[0018] Optionally, a first observation window and a second observation window are provided on one side of the filter box, the first observation window cooperates with the main liquid storage chamber, and the second observation window cooperates with the auxiliary liquid storage chamber, and the first observation window and the second observation window are used to observe the storage amount of high-purity sulfuric acid inside the main liquid storage chamber and the auxiliary liquid storage chamber, respectively.

[0019] The embodiments of the present invention have the following beneficial effects:

[0020] In the utility model, the problem of improper impurity collection and treatment of traditional sulfuric acid filters is effectively solved through the design of the material storage component. The setting of the collection box realizes the centralized storage of filtered impurities, avoiding the risk of impurity scattering and secondary pollution. At the same time, the collection box is driven up and down by the cam, so that the high-purity sulfuric acid remaining in the impurities can be smoothly discharged and collected, which not only avoids the waste of resources, but also reduces the cost of subsequent impurity treatment.

[0021] In the utility model, the device reduces the need for frequent replacement or cleaning of the filter screen in the traditional filter, and realizes continuous filtration of high-purity sulfuric acid by driving the filter screen to move continuously through the motor, effectively preventing the filter screen from being blocked and the adhesion of impurities, and can also transport the impurities. This design not only reduces the difficulty of operation and reduces manual intervention, but also improves production efficiency and extends the service life of the filter screen.

[0022] In the utility model, the efficiency of impurity collection is further improved by arranging a scraper and an inclined plate. The scraper can remove impurities remaining on the filter screen to ensure the maximization of the filtering effect; the inclined plate enables the scraped impurities to smoothly enter the collection box to avoid the accumulation and scattering of impurities.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of a three-dimensional structure of an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of a three-dimensional structure from another perspective of an embodiment of the utility model;

[0027] Figure 3 This is a schematic cross-sectional view of an embodiment of the utility model;

[0028] Figure 4 It is a schematic cross-sectional structure diagram of another perspective of an embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the collection box and the rotating shaft structure of an embodiment of the utility model;

[0030] Figure 6 It is a schematic diagram of the enlarged structure of part A of an embodiment of the utility model.

[0031] In the figure: 1. filter box; 2. liquid inlet pipe; 3. collecting pipe; 4. first liquid discharge pipe; 5. second liquid discharge pipe; 6. side protective shell; 7. screw; 8. first baffle; 9. liquid outlet pipe; 10. partition; 11. main liquid storage chamber; 12. auxiliary liquid storage chamber; 13. roller; 14. filter screen; 15. second baffle; 16. fixing block; 17. spring; 18. mounting frame; 19. rotating shaft; 20. motor; 21. first synchronous wheel; 22. second synchronous wheel; 23. collecting box; 24. filter hole; 25. cam; 26. adjusting dial ring; 27. scraper; 28. inclined panel; 29. ​​first observation window; 30. second observation window; 31. sewage cleaning port. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0035] Example 1

[0036] See also Figure 1-6 As shown, in this embodiment, a high-purity sulfuric acid filter is provided, comprising: a filter box 1, a liquid inlet pipe 2, a filter assembly and a material storage assembly;

[0037] The filter box 1 serves as the main structure of the entire filter, and a partition 10 is fixedly installed on the inner wall of its bottom. The partition 10 cleverly divides the interior of the filter box 1 into two independent areas: a main liquid storage chamber 11 and an auxiliary liquid storage chamber 12. The main functions of these two areas are to store filtered high-purity sulfuric acid and assist in filtering operations. A first liquid discharge pipe 4 and a second liquid discharge pipe 5 are fixedly penetrated on one side of the main liquid storage chamber 11 and the auxiliary liquid storage chamber 12, respectively. Valves are provided on them to control the discharge of high-purity sulfuric acid.

[0038] The liquid inlet pipe 2 is used for inputting high-purity sulfuric acid. One end of the liquid inlet pipe 2 is connected to two collecting pipes 3, and the outer walls of the two collecting pipes 3 are respectively fixedly connected to multiple liquid outlet pipes 9. One end of these liquid outlet pipes 9 is fixed through the top of the filter box 1 and extends into the main liquid storage chamber 11, thereby ensuring that the high-purity sulfuric acid can be evenly input into the main liquid storage chamber 11.

[0039] The filter assembly is the core part of the filter, which includes two rollers 13 rotatably arranged inside the filter box 1, and a filter screen 14 is connected between the two rollers 13 through a transmission connection. The main function of the filter screen 14 is to filter the high-purity sulfuric acid entering the main liquid storage chamber 11. One end of the filter screen 14 extends into the auxiliary liquid storage chamber 12 to facilitate the discharge of filtered impurities. One end of the roller 13 close to the side of the auxiliary liquid storage chamber 12 rotates through one side of the filter box 1 and is fixedly connected to the output shaft of the motor 20 in the side protective shell 6. In this way, when the motor 20 is started, it can drive the filter screen 14 to move continuously to achieve a continuous filtering effect; in addition, two second baffles 15 are fixedly installed on the inner wall of one side of the main liquid storage chamber 11, which cooperate with the filter screen 14 to block one end of the filter screen 14 to prevent unfiltered sulfuric acid from directly entering the auxiliary liquid storage chamber 12.

[0040] The material storage component is responsible for collecting and processing the filtered impurities, and includes a mounting frame 18 slidably mounted on the inner wall of the auxiliary liquid storage chamber 12, and a collecting box 23 slidably mounted inside the mounting frame 18. The collecting box 23 is used to collect the filtered impurities, and a plurality of filter holes 24 opened at the bottom thereof allow the high-purity sulfuric acid remaining in the impurities to drip and be discharged under the action of gravity. A cleaning port 31 is provided on one side of the filter box 1, which is connected to the auxiliary liquid storage chamber 12 and cooperates with the collecting box 23, so that the user can take out the collecting box 23 for cleaning.

[0041] In order to further improve the filtering and cleaning effects, a special driving mechanism is also designed for the material storage assembly. A rotating shaft 19 is rotatably connected between the inner walls on both sides of the auxiliary liquid storage chamber 12, one end of which is fixedly connected to the second synchronous wheel 22 in the side protective shell 6, and the outer wall of one end of the roller shaft 13 adjacent to the rotating shaft 19 is fixedly sleeved with a first synchronous wheel 21. The first synchronous wheel 21 and the second synchronous wheel 22 are connected by a synchronous belt transmission, so that when the motor 20 drives the roller shaft 13 to rotate, the rotating shaft 19 will also rotate accordingly. A plurality of cams 25 are fixedly installed on the outer wall of the rotating shaft 19, which cooperate with the bottom of the collecting box 23. When the rotating shaft 19 rotates, the cam 25 will drive the collecting box 23 to move up and down, thereby achieving better collection of impurities and discharge of residual sulfuric acid. In addition, two fixed blocks 16 are fixedly installed on the inner wall of one side of the auxiliary liquid storage chamber 12, which are connected to the top of the mounting frame 18 through a spring 17, providing a certain buffer and stabilization effect for the lifting and lowering of the collecting box 23.

[0042] The present application can be used in the field of high-purity sulfuric acid filtration technology, and can also be used in other fields applicable to the present application.

[0043] Example 2

[0044] refer to Figure 1 , 3 , 5, 6, based on the improvement of Example 1: a high-purity sulfuric acid filter, which is applied to the field of high-purity sulfuric acid filtering technology;

[0045] In this embodiment, a scraper 27 is fixedly installed on the side of the partition 10 close to the auxiliary liquid storage chamber 12. The scraper 27 is tightly matched with the surface of the filter screen 14. When the filter screen 14 moves, the scraper 27 can scrape off impurities remaining on the filter screen 14 to ensure the filtering effect.

[0046] In order to ensure that the scraped impurities can smoothly enter the collection box 23, a slanted panel 28 is fixedly installed on the top of the mounting frame 18. The slanted panel 28 is located below the scraper 27. Its inclined design allows the impurities to smoothly slide into the collection box 23, avoiding the accumulation of impurities and secondary contamination.

[0047] In the design of the auxiliary liquid storage chamber 12, in addition to the original rotating shaft 19, cam 25 and other components, an adjusting ring 26 is fixedly installed at the end of the rotating shaft 19 away from the side protective shell 6. The adjusting ring 26 allows the user to adjust the rotating shaft 19 externally to ensure that the collection box 23 can be taken out smoothly when it needs to be cleaned or replaced.

[0048] In addition, in order to improve the operability and flexibility of the filter, the top of the filter box 1 slides through the first baffle 8, and the bottom of the first baffle 8 slides with the surface of the filter screen 14. When it is necessary to temporarily block impurities on the filter screen 14, it can be achieved by sliding the first baffle 8. In order to facilitate the adjustment of the position of the first baffle 8, the top of the filter box 1 is also rotatably connected to the screw 7, and the screw 7 is threadedly connected to the first baffle 8. By rotating the screw 7, the position of the first baffle 8 can be conveniently adjusted.

[0049] In order to facilitate the user to observe the storage amount of high-purity sulfuric acid in the main liquid storage chamber 11 and the auxiliary liquid storage chamber 12, a first observation window 29 and a second observation window 30 are set on one side of the filter box 1. The first observation window 29 cooperates with the main liquid storage chamber 11, and the second observation window 30 cooperates with the auxiliary liquid storage chamber 12. The user can directly observe the internal high-purity sulfuric acid level through the observation window to determine whether sulfuric acid needs to be added or discharged.

[0050] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 20 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0051] The use process and working principle of the technical solution of this utility model are as follows:

[0052] During use, the user can transport the high-purity sulfuric acid to be filtered through the liquid inlet pipe 2. After the high-purity sulfuric acid enters the collecting pipe 3, it will evenly enter the filter box 1 through multiple liquid outlet pipes 9. During the falling process, the high-purity sulfuric acid will pass through the filter screen 14 to complete the filtration, and the filtered high-purity sulfuric acid will be stored in the main liquid storage chamber 11; start the motor 20, the motor 20 can drive the filter screen 14 to move, the filter screen 14 can filter while transporting the filtered impurities, until the impurities move to one end of the filter screen 14, and finally fall into the collection box 23 to complete the collection; the filtered impurities often still contain a certain amount of high-purity sulfuric acid, so a filter hole 24 is opened at the bottom of the collection box 23, and the high-purity sulfuric acid contained in the impurities can be gradually discharged through the filter hole 24, and finally stored at the bottom of the auxiliary liquid storage chamber 12; when the motor 20 drives the roller shaft 13 to rotate, it can also be driven by the first synchronous wheel 21, The second synchronous wheel 22 synchronously drives the rotating shaft 19 to rotate, and the rotating shaft 19 can continuously push the collecting box 23 at intervals through multiple cams 25, so that the collecting box 23 can vibrate up and down, which can better discharge the high-purity sulfuric acid remaining in the impurities, reduce the waste of high-purity sulfuric acid, and facilitate the subsequent treatment of impurities; the user can also rotate the screw 7 when the equipment is running, and at this time, the first baffle 8 can be controlled to rise and fall. After the first baffle 8 is lowered, it can block the impurities on the filter screen 14 and prevent the impurities from entering the auxiliary liquid storage chamber 12. The user can use it as needed; the user can also use the first observation window 29 and the second observation window 30 on one side of the filter box 1 to observe the storage amount of high-purity sulfuric acid in the main liquid storage chamber 11 and the auxiliary liquid storage chamber 12. When it is necessary to discharge high-purity sulfuric acid, the user can use the first drainage pipe 4 and the second drainage pipe 5 on the other side to complete the discharge of high-purity sulfuric acid.

[0053] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-purity sulfuric acid filter, characterized in that: include: A filter box (1), wherein a partition (10) is fixedly mounted on the inner wall of the bottom of the filter box (1), and the partition (10) divides the interior of the filter box (1) into two areas, namely, a main liquid storage chamber (11) and an auxiliary liquid storage chamber (12). The main liquid storage chamber (11) and the auxiliary liquid storage chamber (12) are both used to store high-purity sulfuric acid after filtration. A first liquid discharge pipe (4) and a second liquid discharge pipe (5) are fixedly penetrated on one side of the main liquid storage chamber (11) and the auxiliary liquid storage chamber (12), respectively. The first liquid discharge pipe (4) and the second liquid discharge pipe (5) are both provided with valves. The first liquid discharge pipe (4) and the second liquid discharge pipe (5) are used to discharge the high-purity sulfuric acid after filtration. It also comprises a liquid inlet pipe (2), one end of which is fixedly connected to two collecting pipes (3), the outer walls of the two collecting pipes (3) are fixedly connected to a plurality of liquid outlet pipes (9), one end of the plurality of liquid outlet pipes (9) is fixedly passed through the top of the filter box (1) and extends into the main liquid storage chamber (11), and the plurality of liquid outlet pipes (9) are used for uniformly inputting high-purity sulfuric acid; It also includes a filtering component, which is used to filter the input high-purity sulfuric acid and clean and collect the filtered impurities; It also includes a storage component, which is used to centrally store the filtered impurities and discharge and collect the high-purity sulfuric acid remaining in the impurities.

2. A high purity sulfuric acid filter as claimed in claim 1, characterized in that: The filter assembly comprises two rollers (13) rotatably arranged inside the filter box (1), a filter screen (14) is transmission-connected between the two rollers (13), the filter screen (14) is used to filter the high-purity sulfuric acid entering the main liquid storage chamber (11), one end of the filter screen (14) extends into the auxiliary liquid storage chamber (12) to discharge the filtered impurities, one end of the roller (13) close to the auxiliary liquid storage chamber (12) rotates to penetrate one side of the filter box (1), the A side protective shell (6) is fixedly mounted on one side of the filter box (1); a motor (20) is fixedly mounted on an inner wall of one side of the side protective shell (6); an output shaft of the motor (20) is fixedly connected to one end of an adjacent roller shaft (13) and is used to drive the filter screen (14) to continuously move; two second baffles (15) are fixedly mounted on an inner wall of one side of the main liquid storage chamber (11); the two second baffles (15) are both matched with the filter screen (14) and are used to shield one end of the filter screen (14).

3. A high purity sulfuric acid filter as claimed in claim 2, characterized in that: The material storage assembly comprises a mounting frame (18) slidably arranged on the inner wall of the auxiliary liquid storage chamber (12); a collecting box (23) is slidably arranged inside the mounting frame (18); the collecting box (23) is used to collect filtered impurities; a plurality of filter holes (24) are provided at the bottom of the collecting box (23) for allowing high-purity sulfuric acid remaining in the impurities to drip and discharge under the influence of gravity; a cleaning port (31) is provided on one side of the filter box (1); the cleaning port (31) is communicated with the auxiliary liquid storage chamber (12) and cooperates with the collecting box (23); the cleaning port (31) is used to take out the collecting box (23).

4. A high-purity sulfuric acid filter as claimed in claim 3, characterized in that: A same rotating shaft (19) is rotatably connected between the inner walls of both sides of the auxiliary liquid storage chamber (12), and both ends of the rotating shaft (19) rotate and penetrate the two sides of the filter box (1). A second synchronous wheel (22) is fixedly installed on one end of the rotating shaft (19) located in the side protective shell (6), and a first synchronous wheel (21) is fixedly sleeved on the outer wall of one end of the roller shaft (13) adjacent to the rotating shaft (19). The first synchronous wheel (21) and the second synchronous wheel (22) are connected by a synchronous belt transmission. A plurality of cams (25) are fixedly mounted on the outer wall of the rotating shaft (19). The plurality of cams (25) are all located in the auxiliary liquid storage chamber (12) and cooperate with the bottom of the collecting box (23) to drive the collecting box (23) to move up and down. Two fixed blocks (16) are fixedly mounted on the inner wall of one side of the auxiliary liquid storage chamber (12). Springs (17) are fixedly mounted on the bottoms of the two fixed blocks (16). The other ends of the two springs (17) are fixedly connected to the top of the mounting frame (18).

5. A high purity sulfuric acid filter as claimed in claim 3, characterized in that: A scraper (27) is fixedly mounted on one side of the partition (10) close to the auxiliary liquid storage chamber (12); the scraper (27) cooperates with the surface of the filter screen (14) and is used to scrape off impurities remaining on the filter screen (14); an inclined panel (28) is fixedly mounted on the top of the mounting frame (18); the inclined panel (28) is located below the scraper (27) and is used to allow the scraped impurities to smoothly enter the collection box (23).

6. A high-purity sulfuric acid filter as claimed in claim 4, characterized in that: An adjusting ring (26) is fixedly mounted on one end of the rotating shaft (19) away from the side protective shell (6); the adjusting ring (26) is used to adjust the rotating shaft (19) externally, thereby ensuring that the collection box (23) can be taken out smoothly.

7. A high purity sulfuric acid filter as claimed in claim 2, characterized in that: A first baffle (8) is slidably penetrated through the top of the filter box (1), and the bottom of the first baffle (8) is slidably matched with the surface of the filter screen (14). A screw rod (7) is rotatably connected to the top of the filter box (1), and the screw rod (7) is threadedly connected to the first baffle (8). The first baffle (8) is used to block impurities on the filter screen (14) when necessary.

8. A high purity sulfuric acid filter as claimed in claim 1, characterized in that: A first observation window (29) and a second observation window (30) are provided on one side of the filter box (1); the first observation window (29) cooperates with the main liquid storage chamber (11), and the second observation window (30) cooperates with the auxiliary liquid storage chamber (12); the first observation window (29) and the second observation window (30) are used to observe the storage amount of high-purity sulfuric acid in the main liquid storage chamber (11) and the auxiliary liquid storage chamber (12), respectively.

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