Device for dropwise adding alkali liquor in silica sol production process
By designing a dropping device for alkali liquid including a measuring cylinder, connecting pipe, dosing box and scraper during the production process of silicon sol, the problem of difficult to control the amount of alkali liquid is solved, and the precise amount of alkali liquid and inner wall of alkali liquid is achieved The removal of residual alkali liquid improves the reaction efficiency and product purity.
Patent Information
- Application Number
- CN202420981639.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-08
AI Technical Summary
During the production process of silica sol, it is difficult for the prior art to accurately control the amount of alkali liquid, resulting in uneven gel structure and affecting the purity of the product. The residual alkali liquid in the inner wall of the dropping cylinder produces side reactions with the reactants, affecting the purity of the product.
A lye dropping device including a metering cylinder, connecting pipe, a metering box, an electric push rod, a motor and a scraper is designed to accurately control the lye collection and drip acceleration rate, and use a scraper to adjust the metering cylinder. Scrape the remaining alkali liquid on the inner wall to reduce side reactions.
The precise control of the amount of alkali liquid is achieved, the reaction efficiency and yield are improved, and the quality of the silica sol and the purity of the product are ensured.
Smart Images
Figure CN222196875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of alkali solution dripping devices, in particular to an alkali solution dripping device in the production process of silica sol. Background Art
[0002] Silica sol is a colloidal solution prepared by hydrolyzing silicate precursors (such as ethyl silicate), in which alkali is usually used to adjust the pH value of the solution to promote the hydrolysis reaction and gel formation. In the production of silica sol, the amount of alkali is usually relatively small. Although the amount of alkali is relatively small, it plays a vital role in the production of silica sol and can affect the formation rate, structure and performance of the gel. Therefore, in the production process of silica sol, the amount of alkali needs to be accurately controlled to ensure that the product quality and performance meet the requirements.
[0003] The existing silica sol production process uses a relatively small amount of alkali solution, which is often difficult to control, resulting in a loose or dense gel structure, affecting the pore structure and specific surface area of the silica sol. In addition, there will be residual alkali solution on the inner wall of the dropping tube, which will produce side reactions with the reactants and affect the purity of the product. Therefore, a alkali solution dropping device is needed in the silica sol production process. Utility Model Content
[0004] The utility model aims to solve the shortcomings of the prior art and proposes a lye dripping device in the silica sol production process, aiming to solve the problem of accurately controlling the amount of lye and removing the lye hanging on the wall.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for adding alkali solution in the production process of silica sol, comprising a metering cylinder, a connecting pipe is fixedly connected to the left side of the top of the metering cylinder, a measuring box is fixedly connected to the top of the connecting pipe, an electric push rod is fixedly connected to the top of the measuring box, a driving end of the electric push rod passes through the inner wall of the top of the measuring box and is fixedly connected to a piston, a motor is fixedly connected to the front side of the top of the metering cylinder, a second threaded rod is fixedly connected to the driving end of the motor, the upper and lower ends of the second threaded rod are rotatably connected to the inner wall of the metering cylinder, and a scraper is threadedly connected to the outer wall of the second threaded rod.
[0006] Furthermore, a second control valve is fixedly connected to the outer wall of the connecting pipe, a liquid inlet pipe is fixedly connected to the left bottom end of the volume taking box, and a first control valve is fixedly connected to the outer wall of the liquid inlet pipe.
[0007] Furthermore, a first threaded rod is threadedly connected to the center of the top end of the metering cylinder, a knob is fixedly connected to the top end of the first threaded rod, and a liquid regulating plug is fixedly connected to the bottom end of the first threaded rod, and the liquid regulating plug is conical.
[0008] Furthermore, the four sides of the outer wall of the piston are in close contact with the four sides of the inner wall of the measuring box, and a pressure relief port is provided on the right side of the top end of the metering cylinder.
[0009] Furthermore, a dripping tube is fixedly connected to the bottom end of the metering cylinder, and the outer diameter of the liquid regulating plug matches the inner diameter of the top end of the dripping tube.
[0010] Furthermore, a slide rod is fixedly connected to the inner wall of the metering cylinder, and the inner wall of the rear end of the scraper is slidably connected to the outer wall of the slide rod.
[0011] Furthermore, the outer diameter of the scraper is in close contact with the inner wall of the metering cylinder.
[0012] Furthermore, the outer wall of the measuring cylinder is engraved with scale lines.
[0013] The utility model has the following beneficial effects:
[0014] 1. In the utility model, the liquid inlet pipe, the first control valve, the measuring box, the electric push rod, the piston, the connecting pipe, the second control valve, the metering cylinder and the scale lines cooperate with each other to achieve accurate control of the amount of alkali solution, which is beneficial to improve the reaction efficiency and yield and ensure the quality of the silica sol.
[0015] 2. In the utility model, the metering cylinder, the motor, the second threaded rod, the scraper and the slide rod cooperate with each other to scrape off the residual alkali solution on the inner wall of the metering cylinder, reduce the side reaction between the reactants and the residual alkali solution, and improve the reaction efficiency and product purity. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a stereoscopic diagram of a lye dripping device in the silica sol production process proposed by the utility model;
[0017] Figure 2 This is a cross-sectional view of a metering box of a lye dripping device in a silica sol production process proposed by the utility model;
[0018] Figure 3 The utility model discloses a cross-sectional view of a metering cylinder of a device for dropping alkali solution in a silica sol production process.
[0019] Legend:
[0020] 1. Measuring cylinder; 2. Graduation line; 3. Connecting pipe; 4. Second control valve; 5. Measuring box; 6. Electric push rod; 7. First control valve; 8. Liquid inlet pipe; 9. Knob; 10. Motor; 11. Dropper; 12. Piston; 13. Scraper; 14. Second threaded rod; 15. First threaded rod; 16. Sliding rod; 17. Liquid regulating plug; 18. Pressure relief port. DETAILED DESCRIPTION
[0021] 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 in 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.
[0022] Reference Figure 1-3 The utility model provides an embodiment: a device for dropping alkali solution in the production process of silica sol, comprising a metering cylinder 1, a connecting pipe 3 is fixedly connected to the left side of the top of the metering cylinder 1, a measuring box 5 is fixedly connected to the top of the connecting pipe 3, an electric push rod 6 is fixedly connected to the top of the measuring box 5, a driving end of the electric push rod 6 penetrates the inner wall of the top of the measuring box 5 and is fixedly connected to a piston 12, a second control valve 4 is fixedly connected to the outer wall of the connecting pipe 3, a liquid inlet pipe 8 is fixedly connected to the bottom end of the left side of the measuring box 5, a first control valve 7 is fixedly connected to the outer wall of the liquid inlet pipe 8, four sides of the outer wall of the piston 12 are tightly attached to the four sides of the inner wall of the measuring box 5, a pressure relief port 18 is opened on the right side of the top of the metering cylinder 1, and scale lines 2 are engraved on the outer wall of the metering cylinder 1.
[0023] Specifically, before use, first connect the liquid inlet pipe 8 to the alkali solution, then open the pressure relief port 18, plug the dropper 11 with the liquid regulating plug 17, then start the electric push rod 6, the electric push rod 6 pushes the piston 12 to the bottom end of the inner wall of the volume taking box 5, the piston 12 is tightly attached to the inner wall of the volume taking box 5 to ensure the sealing, then close the second control valve 4, open the first control valve 7, start the electric push rod 6 to move the piston 12 to the top of the inner wall of the volume taking box 5, at this time, due to the negative pressure generated inside the volume taking box 5, the alkali solution is sucked into the inner wall of the volume taking box 5, then close the first control valve 7, open the second control valve 4, start the electric push rod 6 to push the piston 12 The bottom end of the inner wall of the measuring box 5 is inserted into the alkali solution, thereby squeezing the alkali solution from the connecting pipe 3 into the metering cylinder 1. The measuring box 5 takes a very small amount each time, and the amount taken each time is a fixed value, which helps to reduce the error and accurately use the alkali solution. Repeat the above operation several times to take the pre-calculated amount of alkali solution into the metering cylinder 1. After the amount is taken, disconnect the connection between the liquid inlet pipe 8 and the alkali solution, and close the first control valve 7. The outer wall of the metering cylinder 1 is a transparent material, and the scale line 2 on the outer wall helps to observe the changes in the solution during the operation to prevent timely adjustments when errors occur. Finally, the accurate amount of alkali solution is achieved, which is beneficial to improve the reaction efficiency and yield and ensure the quality of the silica sol.
[0024] A motor 10 is fixedly connected to the front side of the top of the metering cylinder 1, and a second threaded rod 14 is fixedly connected to the driving end of the motor 10. The upper and lower ends of the second threaded rod 14 are rotatably connected to the inner wall of the metering cylinder 1, and a scraper 13 is threadedly connected to the outer wall of the second threaded rod 14. The first threaded rod 15 is threadedly connected to the center of the top of the metering cylinder 1, and a knob 9 is fixedly connected to the top of the first threaded rod 15. A liquid regulating plug 17 is fixedly connected to the bottom end of the first threaded rod 15. The liquid regulating plug 17 is conical, and a dropper 11 is fixedly connected to the bottom end of the metering cylinder 1. The outer diameter of the liquid regulating plug 17 matches the inner diameter of the top of the dropper 11. A slide bar 16 is fixedly connected to the inner wall of the metering cylinder 1, and the inner wall of the rear end of the scraper 13 is slidably connected to the outer wall of the slide bar 16, and the outer diameter of the scraper 13 is close to the inner wall of the metering cylinder 1.
[0025] Specifically, when the alkali solution is taken in an appropriate amount, the second control valve 4 is closed, the pressure relief port 18 continues to be opened, and the knob 9 at the top of the metering cylinder 1 is rotated. The knob 9 drives the first threaded rod 15 to rotate, so that the liquid regulating plug 17 moves upward, and the drip tube 11 is opened to allow the alkali solution to be dripped by gravity. The liquid regulating plug 17 can increase the gap between the liquid regulating plug 17 and the drip tube 11 according to the distance moved upward, thereby controlling the rate of dripping of the alkali solution. While dripping, the motor 10 can be started, and the motor 10 drives the second threaded rod 14 to rotate. The second threaded rod 14 causes the scraper 13 to move on the outer wall of the sliding rod 16 fixedly connected to the inside of the metering cylinder 1, thereby scraping off the alkali solution attached to the inner wall of the metering cylinder 1, reducing the side reaction between the reactant and the residual alkali solution, and improving the reaction efficiency and product purity.
[0026] Working principle: When in use, first connect the liquid inlet pipe 8 to the alkali solution, then open the pressure relief port 18, plug the dropper 11 with the liquid regulating plug 17, then start the electric push rod 6, the electric push rod 6 pushes the piston 12 to the bottom end of the inner wall of the measuring box 5, then close the second control valve 4, open the first control valve 7, start the electric push rod 6 to move the piston 12 to the top of the inner wall of the measuring box 5, at this time, due to the negative pressure generated inside the measuring box 5, the alkali solution is sucked in, then close the first control valve 7, open the second control valve 4, start the electric push rod 6 to push the piston 12 into the bottom end of the inner wall of the measuring box 5, so that the alkali solution is squeezed from the connecting pipe 3 into the metering cylinder 1, and repeat several times. The pre-calculated alkali solution capacity is obtained, and the scale line 2 on the outer wall of the metering cylinder 1 helps to observe the changes in the solution during the operation, and finally the accurate amount of alkali solution is achieved. When the alkali solution is taken to a suitable amount, the knob 9 is rotated, and the knob 9 drives the first threaded rod 15 to rotate, so that the liquid regulating plug 17 moves upward, and then the drip tube 11 is opened, and the alkali solution will drip, and then the motor 10 is started, and the motor 10 drives the second threaded rod 14 to rotate, and the second threaded rod 14 makes the scraper 13 move along the slide rod 16, so as to scrape off the alkali solution attached to the inner wall of the metering cylinder 1, reduce the side reaction between the reactant and the residual alkali solution, and improve the reaction efficiency and product purity.
[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A device for adding alkali solution in a silica sol production process, comprising a metering cylinder (1), characterized in that: The left side of the top of the metering cylinder (1) is fixedly connected to a connecting pipe (3), the top of the connecting pipe (3) is fixedly connected to a measuring box (5), the top of the measuring box (5) is fixedly connected to an electric push rod (6), the driving end of the electric push rod (6) penetrates the inner wall of the top of the measuring box (5) and is fixedly connected to a piston (12), the front side of the top of the metering cylinder (1) is fixedly connected to a motor (10), the driving end of the motor (10) is fixedly connected to a second threaded rod (14), the upper and lower ends of the second threaded rod (14) are rotatably connected to the inner wall of the metering cylinder (1), and the outer wall of the second threaded rod (14) is threadedly connected to a scraper (13).
2. The device for adding alkali solution in the production process of silica sol according to claim 1, characterized in that: The outer wall of the connecting pipe (3) is fixedly connected to a second control valve (4), the left bottom end of the measuring box (5) is fixedly connected to a liquid inlet pipe (8), and the outer wall of the liquid inlet pipe (8) is fixedly connected to a first control valve (7).
3. The device for adding alkali solution in the production process of silica sol according to claim 1, characterized in that: The top center of the metering cylinder (1) is threadedly connected to a first threaded rod (15), the top of the first threaded rod (15) is fixedly connected to a knob (9), and the bottom of the first threaded rod (15) is fixedly connected to a liquid regulating plug (17), and the liquid regulating plug (17) is conical.
4. The device for adding alkali solution in the production process of silica sol according to claim 1, characterized in that: The four sides of the outer wall of the piston (12) are in close contact with the four sides of the inner wall of the measuring box (5), and a pressure relief port (18) is provided on the right side of the top end of the measuring cylinder (1).
5. The device for adding alkali solution in the production process of silica sol according to claim 3, characterized in that: The bottom end of the metering cylinder (1) is fixedly connected with a dropper (11), and the outer diameter of the liquid regulating plug (17) matches the inner diameter of the top end of the dropper (11).
6. The device for adding alkali solution in the production process of silica sol according to claim 1, characterized in that: The inner wall of the metering cylinder (1) is fixedly connected to a slide rod (16), and the inner wall at the rear end of the scraper (13) is slidably connected to the outer wall of the slide rod (16).
7. The device for adding alkali solution in the production process of silica sol according to claim 1, characterized in that: The outer diameter of the scraper (13) is in close contact with the inner wall of the metering cylinder (1).
8. The device for adding alkali solution in the production process of silica sol according to claim 1, characterized in that: The outer wall of the measuring cylinder (1) is engraved with scale lines (2).