A filtering device for silicon sol semi-finished product produced by silicon powder method

Abstract

This utility model relates to the field of silica sol production technology, specifically a filtration device for producing semi-finished silica sol using the silica powder method. It includes a plate and frame filter press, with a first conveying pipe on the surface of the filter press. A slurry pump is installed at the end of the first conveying pipe furthest from the filter press. Through the connection between the plate and frame filter press and the first conveying pipe, this utility model achieves solid-liquid separation of the semi-finished silica sol using mechanical pressure. A quartz sand filter reduces the turbidity of the semi-finished silica sol, achieving purification. Silica powder is removed a second time by an ion exchange resin filter, which also adjusts the alkalinity of the semi-finished silica sol. The purified semi-finished silica sol is stored in a semi-finished product tank. The quartz sand filter and ion exchange resin filter can be repeatedly rinsed through a tap water pipe. A three-phase pipeline connects to a wastewater tank to store filtered water, effectively removing fine silica powder from the semi-finished silica sol.

Description

Technical Field

[0001] This utility model relates to the field of silica sol production technology, specifically to a filtration device for producing semi-finished silica sol using the silica powder method. Background Technology

[0002] Silica sol is a colloidal dispersion system formed by nano-sized silica particles in water or solvent. Its core production process is to convert silica into colloidal form through chemical methods.

[0003] The semi-finished product filtration device for silica sol production using the silica powder method is mainly used for solid-liquid separation of the reaction mixture during silica sol production to improve the yield of silica sol. This device reduces the residue of filter residue and unreacted silica powder by improving the filtration process, thereby reducing silica sol loss. However, when using existing filtration devices, it is difficult to filter out the fine silica powder in the semi-finished silica sol, affecting the overall appearance. It can only be removed by prolonged storage, allowing the silica powder to slowly settle and form silica sludge at the bottom of the storage tank. Utility Model Content

[0004] The purpose of this invention is to provide a filtration device for producing silica sol semi-finished products using the silica powder method, in order to solve the problem that the filtration devices mentioned in the background art are difficult to filter out the fine silica powder in the silica sol semi-finished products, which affects the overall appearance and can only be stored for a long time, allowing it to slowly settle and form silica sludge at the bottom of the storage tank.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a filtration device for producing silica sol semi-finished product using the silica powder method, comprising a plate and frame filter press. A first conveying pipe is disposed on the surface of the plate and frame filter press. A slurry pump is disposed at the end of the first conveying pipe furthest from the plate and frame filter press. A second conveying pipe is disposed on the surface of the slurry pump. A quartz sand filter is inserted into the end of the second conveying pipe furthest from the slurry pump. A water pipe is inserted into the surface of the quartz sand filter. A three-phase pipe is inserted into the surface of the quartz sand filter. An ion exchange resin filter is inserted into the surface of the water pipe. A third conveying pipe is inserted into the surface of the ion exchange resin filter. A first magnetic pump is disposed at the end of the third conveying pipe furthest from the ion exchange resin filter. The surface of the first magnetic pump is provided with a fourth conveying pipe. A semi-finished product tank is inserted into the end of the fourth conveying pipe away from the first magnetic pump. A wastewater tank is inserted into the surface of the three-phase pipe. A fifth conveying pipe is inserted into the surface of the wastewater tank. A second magnetic pump is provided at the end of the fifth conveying pipe away from the wastewater tank. A sixth conveying pipe is provided on the surface of the second magnetic pump. A reaction vessel is inserted into the end of the sixth conveying pipe away from the second magnetic pump. A sealing sleeve is fixedly connected to the surface of the three-phase pipe. An external threaded rod is fixedly connected to the surface of the three-phase pipe. An installation slot is opened on the surface of the external threaded rod. An installation plug is fixedly connected to the surface of the wastewater tank. A limit block is fixedly connected to the surface of the installation plug. An internal threaded sleeve is movably connected to the surface of the installation plug.

[0006] Preferably, the slurry pump is connected to the internal passage of the plate and frame filter press via a first conveying pipe, and the quartz sand filter is connected to the internal passage of the slurry pump via a second conveying pipe.

[0007] Preferably, the first magnetic pump is connected to the internal passage of the ion exchange resin filter via a third delivery pipe, and the semi-finished product tank is connected to the internal passage of the first magnetic pump via a fourth delivery pipe.

[0008] Preferably, the wastewater tank is connected to the internal passage of a quartz sand filter via a three-phase pipeline, and the wastewater tank is also connected to the internal passage of an ion exchange resin filter via a three-phase pipeline.

[0009] Preferably, the second magnetic pump is connected to the internal passage of the wastewater tank via the fifth delivery pipe, and the reactor is connected to the internal passage of the second magnetic pump via the sixth delivery pipe.

[0010] Preferably, the sealing sleeve is in multiple sets, the external threaded rod is in multiple sets, and the mounting rod is in multiple sets.

[0011] Preferably, the sealing sleeve is internally connected to the three-phase pipe and the wastewater tank, and the mounting rod is externally connected to the mounting slot and the threaded rod.

[0012] Preferably, the internal threaded sleeve is movably connected to the surface of the mounting rod and the external threaded rod, the internal threaded sleeve is threaded onto the surface of the external threaded rod, and the internal threaded sleeve is abutted to the surface of the external threaded rod and the limiting block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By connecting the plate and frame filter press and the first conveying pipeline, solid-liquid separation of the silica sol semi-finished product can be achieved through mechanical pressure. Then, by connecting the first conveying pipeline and the slurry pump, and the slurry pump and the second conveying pipeline, the silica sol semi-finished product containing fine silica powder can be conveyed into the quartz sand filter through the second conveying pipeline. The connection between the second conveying pipeline and the quartz sand filter can reduce the turbidity of the silica sol semi-finished product to achieve purification. By connecting the three-phase pipeline and the ion exchange resin filter, the silica powder is removed a second time through ion exchange resin filtration. At the same time, the alkalinity of the silica sol semi-finished product is adjusted. Then, through the third conveying pipeline and the... The connection of the first magnetic pump, the fourth conveying pipe and the semi-finished product tank allows the purified silica sol semi-finished product to be stored inside the semi-finished product tank via the first magnetic pump. The connection of the tap water pipe and the quartz sand filter, and the connection of the tap water pipe and the ion exchange resin filter allows for repeated rinsing of the quartz sand filter and the ion exchange resin filter. The connection of the three-phase pipe and the wastewater tank allows for the storage of filtered water. The connection of the fifth conveying pipe and the second magnetic pump, and the connection of the sixth conveying pipe and the reactor allow the filtered water to be conveyed into the reactor via the second magnetic pump for neutralization reaction, effectively removing fine silica powder from the silica sol semi-finished product.

[0015] 2. By connecting the three-phase pipe and the sealing sleeve, and connecting the three-phase pipe and the wastewater tank, the three-phase pipe can be installed on the surface of the wastewater tank. The sealing sleeve improves the sealing performance of the connection. Then, by connecting the external threaded rod and the mounting slot, and connecting the external threaded rod and the mounting rod, the mounting rod can be installed on the surface of the external threaded rod. By connecting the mounting rod and the internal threaded sleeve, and connecting the external threaded rod and the internal threaded sleeve, the internal threaded sleeve can fix the connection position of the external threaded rod and the mounting rod. Then, by connecting the limiting block and the internal threaded sleeve, the connection position of the internal threaded sleeve is restricted. Conversely, the three-phase pipe can be quickly disassembled. The same applies to other devices, achieving the effect of facilitating the replacement of the surface conveying pipes of each device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the connection structure between the plate and frame filter press (1) and the quartz sand filter (5) of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the connection structure between the ion exchange resin filter and the semi-finished product tank of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the connection structure between the wastewater tank and the reaction vessel of this utility model;

[0020] Figure 5 This is a partial three-dimensional sectional view of the connection structure of the three-phase pipeline and wastewater tank of this utility model;

[0021] Figure 6 This is a three-dimensional partial sectional view of the connection structure between the external threaded rod and the mounting rod of this utility model.

[0022] In the diagram: 1. Plate and frame filter press; 2. First conveying pipeline; 3. Slurry pump; 4. Second conveying pipeline; 5. Quartz sand filter; 6. Tap water pipeline; 7. Three-phase pipeline; 8. Ion exchange resin filter; 9. Third conveying pipeline; 10. First magnetic pump; 11. Fourth conveying pipeline; 12. Semi-finished product tank; 13. Wastewater tank; 14. Fifth conveying pipeline; 15. Second magnetic pump; 16. Sixth conveying pipeline; 17. Reactor; 18. Sealing sleeve; 19. External threaded rod; 20. Mounting slot; 21. Mounting rod; 22. Limiting block; 23. Internal threaded sleeve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 One embodiment provided by this utility model:

[0025] A filtration device for producing silica sol semi-finished product using the silica powder method includes a plate and frame filter press 1 for solid-liquid separation of the silica sol semi-finished product through mechanical pressure. A first conveying pipe 2 is provided on the surface of the plate and frame filter press 1 for connecting the plate and frame filter press 1 and a slurry pump 3. The slurry pump 3 is installed at the end of the first conveying pipe 2 away from the plate and frame filter press 1 for conveying the silica sol semi-finished product containing silica powder. A second conveying pipe 4 is provided on the surface of the slurry pump 3 for connecting the slurry pump 3 and a quartz sand filter 5. The quartz sand filter 5 is inserted and connected at the end of the second conveying pipe 4 away from the slurry pump 3 for filtering the silica sol with high turbidity through granular or non-granular quartz sand of a certain thickness, effectively trapping and removing suspended solids, colloidal particles, and some heavy metals. A water pipe 6 is inserted and connected to the surface of the filter 5 for supplying tap water to the quartz sand filter 5 and the ion exchange resin filter 8. A three-phase pipe 7 is inserted and connected to the surface of the quartz sand filter 5 for connecting the quartz sand filter 5, the ion exchange resin filter 8, and the wastewater tank 13. An ion exchange resin filter 8 is inserted and connected to the surface of the water pipe 6 for secondary filtration and adjustment of the alkalinity of the semi-finished product. A third conveying pipe 9 is inserted and connected to the surface of the ion exchange resin filter 8 for connecting the ion exchange resin filter 8 and the first magnetic pump 10. The first magnetic pump 10 is installed at the end of the third conveying pipe 9 away from the ion exchange resin filter 8 for conveying the silica sol semi-finished product. The surface of the first magnetic pump 10 is provided with... The fourth conveying pipe 11 connects the first magnetic pump 10 and the semi-finished product tank 12. The end of the fourth conveying pipe 11 furthest from the first magnetic pump 10 is connected to the semi-finished product tank 12 for storing the filtered silica sol semi-finished product. A wastewater tank 13 is connected to the surface of the three-phase pipe 7 for storing the filtered water from the quartz sand filter 5 and the ion exchange resin filter 8. A fifth conveying pipe 14 connects the surface of the wastewater tank 13 to the second magnetic pump 15. The end of the fifth conveying pipe 14 furthest from the wastewater tank 13 is equipped with the second magnetic pump 15 for conveying the filtered water. A sixth conveying pipe 16 connects the second magnetic pump 15 to the reaction vessel 17. A reaction vessel 17 is plugged into the end furthest from the second magnetic pump 15 for purifying and filtering water. A sealing sleeve 18 is fixedly connected to the surface of the three-phase pipeline 7 to improve the sealing of the connection between the three-phase pipeline 7 and the wastewater tank 13. An external threaded rod 19 is fixedly connected to the surface of the three-phase pipeline 7 for installing a mounting rod 21. A mounting slot 20 is provided on the surface of the external threaded rod 19 for inserting the mounting rod 21. A mounting rod 21 is fixedly connected to the surface of the wastewater tank 13 for mounting on the surface of the external threaded rod 19. A limit block 22 is fixedly connected to the surface of the mounting rod 21 to limit the connection position of the internal threaded sleeve 23. An internal threaded sleeve 23 is movably connected to the surface of the mounting rod 21 to fix the connection position of the external threaded rod 19 and the mounting rod 21.The plate and frame filter press 1, slurry pump 3, quartz sand filter 5, ion exchange resin filter 8, first magnetic pump 10, semi-finished product tank 12, wastewater tank 13, second magnetic pump 15, and reaction vessel 17 are all existing products and are not considered as technical protection points in this application; therefore, they will not be described in detail here.

[0026] Furthermore, the slurry pump 3 is connected to the internal passage of the plate and frame filter press 1 through the first conveying pipe 2, and the quartz sand filter 5 is connected to the internal passage of the slurry pump 3 through the second conveying pipe 4. After the silica sol semi-finished product is filtered by the plate and frame filter press 1, there will be a lot of fine silica powder. Then, the slurry pump 3 transports the silica sol semi-finished product together with the silica powder through the first conveying pipe 2 and the second conveying pipe 4 into the interior of the quartz sand filter 5. The quartz sand filter 5 uses quartz sand as the filter medium. Under a certain pressure, the silica sol with high turbidity is filtered through a certain thickness of granular or non-granular quartz sand, effectively intercepting and removing suspended solids, colloidal particles and some heavy metals, and finally achieving the purpose of reducing turbidity and achieving purification.

[0027] Furthermore, the first magnetic pump 10 is connected to the internal passage of the ion exchange resin filter 8 through the third conveying pipe 9, and the semi-finished product tank 12 is connected to the internal passage of the first magnetic pump 10 through the fourth conveying pipe 11. The silica sol semi-finished product is then conveyed into the ion exchange resin filter 8. The residual silica powder is removed a second time by filtration through the ion exchange resin filter 8. The ion exchange resin filter 8 has a better filtration effect than the quartz sand filter 5, and the use of ion exchange resin can also adjust the alkalinity of the semi-finished product. After multiple filtrations, the first magnetic pump 10 conveys the purified silica sol semi-finished product into the semi-finished product tank 12 through the third conveying pipe 9 and the fourth conveying pipe 11 for storage. After a period of use, the quartz sand filter 5 and the ion exchange resin filter 8 have adsorbed and trapped a lot of impurities, so they need to be backwashed with tap water. The tap water pipe 6 continuously conveys tap water into the quartz sand filter 5 and the ion exchange resin filter 8 to repeatedly rinse them.

[0028] Furthermore, the wastewater tank 13 is connected to the internal passage of the quartz sand filter 5 via the three-phase pipe 7, and the wastewater tank 13 is also connected to the internal passage of the ion exchange resin filter 8 via the three-phase pipe 7. When the quartz sand filter 5 and the ion exchange resin filter 8 filter the silica sol semi-finished product, a large amount of filtered water will be generated. The filtered water is transported into the wastewater tank 13 for storage through the three-phase pipe 7.

[0029] Furthermore, the second magnetic pump 15 is connected to the internal passage of the wastewater tank 13 through the fifth conveying pipe 14, and the reaction vessel 17 is connected to the internal passage of the second magnetic pump 15 through the sixth conveying pipe 16. Then, the second magnetic pump 15 conveys the filtered water into the reaction vessel 17 through the fifth conveying pipe 14 and the sixth conveying pipe 16 to neutralize and purify the filtered water for reuse and reduce water waste.

[0030] Furthermore, there are multiple sets of sealing sleeves 18, multiple sets of external threaded rods 19, and multiple sets of mounting rods 21. Each set of conveying pipes and devices has a sealing sleeve 18 at the connection part, and each set of conveying pipes and devices is connected together for use through external threaded rods 19 and mounting rods 21.

[0031] Furthermore, the sealing sleeve 18 is connected to the interior of the wastewater tank 13 via the three-phase pipe 7, and the mounting rod 21 is connected to the surface of the external thread rod 19 via the mounting slot 20, so that the three-phase pipe 7 is installed on the surface of the wastewater tank 13, and the mounting rod 21 is inserted into the interior of the mounting slot 20.

[0032] Furthermore, the internal threaded sleeve 23 is movably connected to the surface of the mounting rod 21 and the external threaded rod 19. The internal threaded sleeve 23 is threaded onto the surface of the external threaded rod 19. The internal threaded sleeve 23 is abutted against the surface of the external threaded rod 19 and the limiting block 22. Then, the internal threaded sleeve 23 is moved to the surface of the external threaded rod 19, and the internal threaded sleeve 23 is rotated to tighten it onto the surface of the external threaded rod 19, so that the inside of the internal threaded sleeve 23 abuts against the surface of the limiting block 22, at which point the maximum degree of fixation is achieved.

[0033] Working Principle: When using the plate and frame filter press 1, first connect each set of conveying pipes to the device. Insert the mounting rod 21 into the mounting slot 20, then move the inner threaded sleeve 23 to the surface of the outer threaded rod 19, and rotate the inner threaded sleeve 23 to tighten it onto the surface of the outer threaded rod 19, so that the inside of the inner threaded sleeve 23 abuts against the surface of the limiting block 22, achieving maximum fixation. This connects the entire device. Then, pour the silica sol semi-finished product into the plate and frame filter press 1. After the silica sol semi-finished product is filtered by the plate and frame filter press 1, there will be a lot of fine silica powder. Then, the slurry pump 3 transports the silica sol semi-finished product along with the silica powder through the first conveying pipe 2 and the second conveying pipe 4 into the quartz sand filter 5. The silica sol with high turbidity is filtered through a certain thickness of granular or non-granular quartz sand, effectively intercepting and removing suspended solids, colloidal particles and some heavy metals. Then, the silica sol semi-finished product is transported into the centrifuge. Inside the ion exchange resin filter 8, residual silica powder is removed a second time through filtration. After multiple filtrations, the first magnetic pump 10 transports the purified silica sol semi-finished product into the semi-finished product tank 12 for storage via the third conveying pipe 9 and the fourth conveying pipe 11. After a period of use, the quartz sand filter 5 and the ion exchange resin filter 8 have accumulated a large amount of impurities, requiring backwashing with tap water. The tap water pipe 6 continuously supplies tap water to the quartz sand filter 5 and the ion exchange resin filter 8 to repeatedly rinse them. The filtered water is then transported into the wastewater tank 13 for storage via the three-phase pipe 7. Subsequently, the second magnetic pump 15 transports the filtered water into the reaction vessel 17 via the fifth conveying pipe 14 and the sixth conveying pipe 16 to neutralize and purify the filtered water for reuse, reducing water waste.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A filtration device for producing silica sol semi-finished product using the silica powder method, comprising a plate and frame filter press (1), characterized in that: The plate and frame filter press (1) is provided with a first conveying pipe (2). A slurry pump (3) is provided at the end of the first conveying pipe (2) away from the plate and frame filter press (1). A second conveying pipe (4) is provided on the surface of the slurry pump (3). A quartz sand filter (5) is inserted and connected at the end of the second conveying pipe (4) away from the slurry pump (3). A tap water pipe (6) is inserted and connected on the surface of the quartz sand filter (5). A three-phase pipe (7) is inserted and connected on the surface of the quartz sand filter (5). An ion exchange resin filter (8) is inserted and connected on the surface of the tap water pipe (6). A third conveying pipe (9) is inserted and connected on the surface of the ion exchange resin filter (8). A first magnetic pump (10) is provided at the end of the third conveying pipe (9) away from the ion exchange resin filter (8). A fourth conveying pipe (11) is provided on the surface of the first magnetic pump (10). The fourth conveying pipe (11) is located away from the first magnetic pump (10). One end of the three-phase pipe (7) is connected to a semi-finished product tank (12), the surface of the three-phase pipe (7) is connected to a wastewater tank (13), the surface of the wastewater tank (13) is connected to a fifth conveying pipe (14), the end of the fifth conveying pipe (14) away from the wastewater tank (13) is provided with a second magnetic pump (15), the surface of the second magnetic pump (15) is provided with a sixth conveying pipe (16), the end of the sixth conveying pipe (16) away from the second magnetic pump (15) is connected to a reaction vessel (17), the surface of the three-phase pipe (7) is fixedly connected to a sealing sleeve (18), the surface of the three-phase pipe (7) is fixedly connected to an external thread rod (19), the surface of the external thread rod (19) is provided with an installation slot (20), the surface of the wastewater tank (13) is fixedly connected to an installation rod (21), the surface of the installation rod (21) is fixedly connected to a limit block (22), and the surface of the installation rod (21) is movably connected to an internal thread sleeve (23).

2. The filtration device for producing silica sol semi-finished product by silica powder method according to claim 1, characterized in that: The slurry pump (3) is connected to the internal passage of the plate and frame filter press (1) through the first conveying pipe (2), and the quartz sand filter (5) is connected to the internal passage of the slurry pump (3) through the second conveying pipe (4).

3. The filtration device for producing silica sol semi-finished product by silica powder method according to claim 1, characterized in that: The first magnetic pump (10) is connected to the internal passage of the ion exchange resin filter (8) through the third conveying pipe (9), and the semi-finished product tank (12) is connected to the internal passage of the first magnetic pump (10) through the fourth conveying pipe (11).

4. A filtration device for producing silica sol semi-finished product using the silica powder method according to claim 1, characterized in that: The wastewater tank (13) is connected to the internal passage of the three-phase pipe (7) and the quartz sand filter (5), and the wastewater tank (13) is connected to the internal passage of the ion exchange resin filter (8) through the three-phase pipe (7).

5. A filtration device for producing silica sol semi-finished product using the silica powder method according to claim 1, characterized in that: The second magnetic pump (15) is connected to the internal passage of the wastewater tank (13) through the fifth conveying pipe (14), and the reactor (17) is connected to the internal passage of the second magnetic pump (15) through the sixth conveying pipe (16).

6. A filtration device for producing silica sol semi-finished product using the silica powder method according to claim 1, characterized in that: The sealing sleeve (18) is in multiple sets, the external threaded rod (19) is in multiple sets, and the mounting rod (21) is in multiple sets.

7. A filtration device for producing silica sol semi-finished product using the silica powder method according to claim 1, characterized in that: The sealing sleeve (18) is internally connected to the three-phase pipe (7) and the wastewater tank (13), and the mounting rod (21) is surfacely connected to the mounting slot (20) and the external threaded rod (19).

8. A filtration device for producing silica sol semi-finished product using the silica powder method according to claim 1, characterized in that: The internal threaded sleeve (23) is movably connected to the surface of the mounting rod (21) and the external threaded rod (19). The internal threaded sleeve (23) is threaded onto the surface of the external threaded rod (19). The internal threaded sleeve (23) is abutted to the surface of the external threaded rod (19) and the limiting block (22).

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