A silica solution filtering device

Abstract

This application provides a silica solution filtration device, relating to the field of filtration technology. It includes a first filter box with a feed hopper at the top and a discharge pipe connected to the bottom. A filter assembly is located inside the first filter box. A second filter box is located below the first filter box, with its top recessed to form a funnel below the discharge pipe. A filter membrane is placed inside the funnel. A discharge pipe with a discharge valve is located on one side of the second filter box. A vacuum pump is located on one side of the second filter box, with its inlet connected to the second filter box via a pipe. This invention first uses the filter assembly of the first filter box to preliminarily filter the silica solution, removing large silica particles. Then, the solution enters the funnel of the second filter box through the discharge pipe for secondary fine filtration using the filter membrane in the funnel. The vacuum pump creates negative pressure inside the box, accelerating filtration. Compared to existing technologies, this effectively delays filter membrane clogging and increases filtration speed.

Description

Technical Field

[0001] This application relates to the field of filtration technology, and more specifically, to a silica solution filtration device. Background Technology

[0002] When silica is used as a reinforcing agent or thixotropic agent in liquid silicone rubber, its particle size needs to be strictly controlled. For example, in the production of liquid silicone rubber products with high transparency and high mechanical properties, such as medical-grade silicone products or sealants for high-end electronic devices, if the particle size in the silica solution is uneven, large particles may affect the transparency of the silicone rubber and hinder its uniform dispersion. Filtration allows for the acquisition of silica within a specific particle size range, thereby ensuring the stability of the liquid silicone rubber's performance and the consistency of product quality.

[0003] However, when using existing filtration devices to filter silica solutions, silica particles are easily adsorbed onto the surface of the filter membrane or deposited inside the membrane pores, quickly clogging the pores, causing a decrease in filtration flux, and ultimately severely affecting the filtration speed. Summary of the Invention

[0004] The purpose of this application is to provide a silica solution filtration device that can solve the technical problem that when existing filtration devices filter silica solutions, silica particles are easily adsorbed on the membrane surface or deposited in the membrane pores, quickly clogging the membrane pores, resulting in a decrease in filtration flux and affecting the filtration speed.

[0005] This application provides a silica solution filtration device, including a first filter box, a feed hopper at the top of the first filter box, a discharge pipe connected to the bottom of the first filter box, a filter assembly inside the first filter box, a second filter box below the first filter box, the top of the second filter box being recessed inward to form a funnel, the funnel being located below the discharge pipe, a filter membrane being laid inside the funnel, a discharge pipe on one side of the second filter box, a discharge valve on the discharge pipe, and a vacuum pump on one side of the second filter box, the air inlet of the vacuum pump being connected to the second filter box through a pipe.

[0006] Furthermore, the filter assembly includes a filter frame, a first filter screen, a second filter screen, and filter media. The filter frame is removably disposed within the first filter box. The first filter screen and the second filter screen are both fixed on the filter frame. The filter frame, the first filter screen, and the second filter screen surround a receiving cavity, and the filter media fills the receiving cavity.

[0007] Furthermore, the filter frame is inclined, the feed hopper is located at the upper end of the filter frame, a discharge pipe is provided on one side of the first filter box, the discharge pipe is located at the lower end of the filter frame, and a discharge valve is provided on the discharge pipe.

[0008] Furthermore, a first support frame is provided between the first filter box and the second filter box. The first support frame is fixed to the top of the second filter box, the first filter box is fixed to the first support frame, and a second support frame is fixed to the bottom of the second filter box.

[0009] Furthermore, a discharge valve is provided on the discharge pipe.

[0010] Furthermore, the pipeline is equipped with a regulating valve.

[0011] Furthermore, both the first filter box and the second filter box are provided with transparent liquid level display windows on one side.

[0012] The beneficial effects of this utility model are:

[0013] This invention uses a filter assembly in the first filter box to perform preliminary filtration of the silica solution, removing larger silica particles. The solution then flows through a feed pipe into a funnel at the top of the second filter box, where a filter membrane performs secondary fine filtration. A vacuum pump creates negative pressure in the second filter box, increasing the driving force for the solution to pass through the filter membrane. Compared with existing technologies, this effectively delays filter membrane clogging and improves filtration speed. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0016] Figure 2 These are cross-sectional views of some embodiments of this application;

[0017] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0018] The reference numerals in the attached figures are as follows:

[0019] 1. First filter box; 2. Feed hopper; 3. Discharge pipe; 4. Filter assembly; 41. Filter frame; 42. First filter screen; 43. Second filter screen; 44. Filter packing; 5. Second filter box; 6. Funnel; 7. Filter membrane; 8. Discharge pipe; 9. Discharge valve; 10. Vacuum pump; 11. Pipeline; 12. Discharge pipe; 13. Discharge valve; 14. First support frame; 15. Second support frame; 16. Discharge valve; 17. Regulating valve; 18. Liquid level display window. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation

[0026] like Figure 1 and Figure 2 As shown, this application provides a silica solution filtration device, including a first filter box 1, a feed hopper 2 at the top of the first filter box 1, a discharge pipe 3 connected to the bottom of the first filter box 1, a filter assembly 4 inside the first filter box 1, a second filter box 5 below the first filter box 1, a funnel 6 formed by an inward indentation at the top of the second filter box 5, the funnel 6 being located below the discharge pipe 3, a filter membrane 7 being laid inside the funnel 6, a discharge pipe 8 on one side of the second filter box 5, a discharge valve 9 on the discharge pipe 8, and a vacuum pump 10 on one side of the second filter box 5. The air inlet of the vacuum pump 10 is connected to the second filter box 5 through a pipe 11. In use, the silica solution enters the first filter box 1 through the feed hopper 2, undergoes preliminary filtration through the filter assembly 4 in the first filter box 1 to remove larger silica particles, and the pre-filtered solution passes through the discharge pipe. 3. The solution flows into the funnel 6 at the top of the second filter box 5. The filter membrane 7 in the funnel 6 performs secondary fine filtration on the solution, further removing fine silica particles to obtain a silica solution with a specific particle size range (the silica solution with a specific particle size range can be obtained by solid-liquid separation). The vacuum pump 10 is connected to the second filter box 5. During filtration, the discharge valve 9 is closed first, and then negative pressure is formed in the second filter box 5 by pumping air to accelerate the filtration speed of the solution through the filter membrane 7. The filtered solution is discharged through the discharge pipe 8 under the control of the discharge valve 9. The silica solution is initially filtered by the filter assembly 4 of the first filter box 1 to remove larger silica particles. The vacuum pump can form negative pressure in the second filter box 5 to increase the driving force of the solution through the filter membrane 7. Compared with the prior art, this effectively delays the clogging of the filter membrane 7 and improves the filtration speed.

[0027] like Figure 2 and Figure 3As shown, the filter assembly 4 includes a filter frame 41, a first filter screen 42, a second filter screen 43, and a filter filler 44. The filter frame 41 is removably installed inside the first filter box 1. The first filter screen 42 and the second filter screen 43 are both fixed on the filter frame 41. The filter frame 41, the first filter screen 42, and the second filter screen 43 form a receiving cavity, and the filter filler 44 fills the receiving cavity. The removable filter frame 41 facilitates installation and disassembly within the first filter box 1, making maintenance and replacement convenient. The first filter screen 42, the second filter screen 43, and the filter filler 44 effectively remove larger silica particles. Specifically, the first filter screen 42 is located above the second filter screen 43, and the pore size of the first filter screen 42 is larger than that of the second filter screen 43. The filter filler 44 is a filter material layer made of wound fiber filaments. The first filter screen 42, the filter filler 44, and the second filter screen 43 form a multi-stage filtration system, effectively intercepting larger silica particles.

[0028] like Figure 2 As shown, the filter frame 41 is inclined, the feed hopper 2 is located at the upper end of the filter frame 41, and a discharge pipe 12 is provided on one side of the first filter box 1. The discharge pipe 12 is located at the lower end of the filter frame 41, and a discharge valve 13 is provided on the discharge pipe 12. The inclined arrangement of the filter frame 41, combined with the feed hopper 2 being located at the upper end, allows the silica solution to be distributed quickly and evenly on the filter frame 41 by gravity, increasing the filtration area and accelerating the filtration speed. The discharge pipe 12 and the discharge valve 13 can promptly discharge the impurities intercepted after filtration, preventing impurities from accumulating on the filter frame 41 and affecting the filtration effect.

[0029] like Figure 1 and Figure 2 As shown, a first support frame 14 is provided between the first filter box 1 and the second filter box 5. The first support frame 14 is fixed to the top of the second filter box 5, and the first filter box 1 is fixed on the first support frame 14. A second support frame 15 is fixed to the bottom of the second filter box 5. The first support frame 14 firmly fixes the first filter box 1 above the second filter box 5, and the second support frame 15 provides stable support for the second filter box 5.

[0030] like Figure 2 As shown, the feed pipe 3 is equipped with a feed valve 16. The feed valve 16 can effectively control the speed at which the silica solution flows from the first filter box 1 into the second filter box 5. It can prevent the filter membrane 7 from being subjected to excessive pressure or being washed away due to excessive solution in the first filter box 1 rushing into the second filter box 5. When the filter membrane 7 needs to be replaced, the feed valve 16 can be closed to stop the solution flow. After the operation is completed, it can be opened again, which makes it convenient to flexibly control the filtration process.

[0031] like Figure 2As shown, a regulating valve 17 is provided on the pipeline 11. The opening of the pipeline 11 is controlled by the regulating valve 17, which, together with the vacuum pump 10, controls the negative pressure in the first filter box 1, thereby controlling the driving force of the silica solution through the filter membrane 7 and effectively controlling the filtration speed.

[0032] like Figure 1 As shown, a transparent liquid level display window 18 is provided on one side of the first filter box 1 and the second filter box 5. The transparent liquid level display window 18 allows the operator to intuitively see the liquid level height of the silica solution in the first filter box 1 and the second filter box 5. During the filtration process, the progress of filtration can be understood in real time by observing the changes in the liquid level.

[0033] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A silica solution filtration device, characterized in that: The system includes a first filter box, a feed hopper at the top of the first filter box, a discharge pipe connected to the bottom of the first filter box, a filter assembly inside the first filter box, a second filter box below the first filter box, a funnel formed by an inward indentation at the top of the second filter box, the funnel being located below the discharge pipe, a filter membrane being laid inside the funnel, a discharge pipe with a discharge valve on one side of the second filter box, and a vacuum pump on one side of the second filter box, the air inlet of the vacuum pump being connected to the second filter box through a pipe.

2. The silica solution filtration device according to claim 1, characterized in that: The filter assembly includes a filter frame, a first filter screen, a second filter screen, and filter media. The filter frame is removably installed inside the first filter box. The first filter screen and the second filter screen are both fixed on the filter frame. The filter frame, the first filter screen, and the second filter screen surround a receiving cavity, and the filter media fills the receiving cavity.

3. The silica solution filtration device according to claim 2, characterized in that: The filter frame is inclined, the feed hopper is located at the upper end of the filter frame, a discharge pipe is provided on one side of the first filter box, the discharge pipe is located at the lower end of the filter frame, and a discharge valve is provided on the discharge pipe.

4. The silica solution filtration device according to claim 1, characterized in that: A first support frame is provided between the first filter box and the second filter box. The first support frame is fixed to the top of the second filter box, the first filter box is fixed to the first support frame, and a second support frame is fixed to the bottom of the second filter box.

5. The silica solution filtration device according to claim 1, characterized in that: The feeding pipe is equipped with a feeding valve.

6. The silica solution filtration device according to claim 1, characterized in that: The pipeline is equipped with a regulating valve.

7. A silica solution filtration device according to claim 1, characterized in that: Both the first filter box and the second filter box have transparent liquid level display windows on one side.

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