Low-temperature controllable gelatinized nano titanium sol preparation equipment

Abstract

The invention discloses low-temperature controllable gelatinized nano titanium sol preparation equipment, and particularly relates to the technical field of nano titanium sol preparation, the low-temperature controllable gelatinized nano titanium sol preparation equipment comprises an equipment body, a stirring assembly, a feeding assembly and an adjusting assembly, the stirring assembly comprises a stirring rod arranged in the equipment body, and the stirring rod is used for stirring materials in the equipment body; the stirring rod is arranged on the equipment body, the feeding assemblies are arranged on the stirring rod in an array mode, the adjusting assemblies are arranged at the two ends of the stirring rod, and the adjusting assemblies can control opening and closing of the feeding assemblies. The problem that local pH changes violently and the stable state of particles is damaged due to the fact that the additive is added into the reaction kettle directly through the stirring rod in the stirring process is solved, and meanwhile the problem that the additive close to the end of the stirring rod is too much and the local pH changes violently due to centrifugal force generated during stirring is solved.

Description

A device for preparing low-temperature controllable gelation of nano-titanium sol Technical Field

[0001] This invention relates to the field of nano-titanium sol preparation technology, and more specifically, to a device for preparing nano-titanium sol with low-temperature controllable gelation. Background Technology

[0002] Titanium nanosols, as an emerging inorganic nanomaterial, exhibit great potential in low-temperature catalytic desulfurization and denitrification due to their extremely high specific surface area, excellent photocatalytic activity, controllable surface chemical properties, and outstanding resistance to sulfur poisoning. Hydrothermal gelation, a classic preparation method, directly yields well-crystallized and highly dispersible titanium nanosols by driving the hydrolysis, condensation, and crystallization of the precursor in a high-temperature, high-pressure hydrothermal environment. This method combines the sol-gel process with a hydrothermal reaction, avoiding the hard agglomeration of particles caused by subsequent high-temperature calcination, and is considered an effective approach for preparing high-performance titanium nanosols.

[0003] However, in the preparation of nano-titanium sol, pH control is a core process that runs through the entire process and determines the performance of the final product. In conventional pH adjustment operations, because the nano-sol system is extremely sensitive to the ionic environment, if concentrated acid or concentrated alkali is directly added to the sol, the local pH will change drastically, destroying the stable state of the particles and causing irreversible aggregation, making the product particles larger and uneven, which seriously affects the reproducibility and quality of the product.

[0004] Although some reactors add additives directly from inside the reactor through a stirring device during the stirring process, the centrifugal force generated during stirring results in a larger amount of additive near the end of the stirring device, which still leads to drastic local pH changes. Furthermore, the addition of pH-sensitive additives increases the total volume of the solution inside the reactor, thereby increasing the internal pressure. Excessive pressure can cause the sol to agglomerate, flocculate, or even precipitate. Therefore, this invention proposes a low-temperature controllable gelation nano-titanium sol preparation device to solve the above problems. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a low-temperature controllable gelation nano-titanium sol preparation device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-temperature controllable gelation nano-titanium sol preparation device, comprising: a device body, a stirring component, a feeding component, and an adjusting component. The stirring component includes a stirring rod disposed inside the device body, which is used to stir the materials inside the device body. Multiple feeding components are arranged in an array on the stirring rod, and each feeding component can add an equal amount of additive to the device body. The adjusting component is disposed at both ends of the stirring rod, and can control the opening and closing of the feeding components and adjust the internal pressure of the device body when the feeding components add additive to the device body.

[0007] Preferably, the feeding assembly includes a feeding chamber disposed on the stirring rod, a first piston plate is slidably connected inside the feeding chamber, a first elastic element is disposed inside the feeding chamber, one end of the first elastic element is fixedly connected to the first piston plate, and the other end of the first elastic element is fixedly connected to the inner wall of the feeding chamber.

[0008] Preferably, the adjusting assembly includes an adjusting cavity disposed at one end of the stirring rod, a piston column is slidably connected inside the adjusting cavity, a second elastic element is disposed inside the adjusting cavity, one end of the second elastic element is fixedly connected to the piston column, and the other end of the second elastic element is fixedly connected to the inner wall of the adjusting cavity.

[0009] Preferably, an electromagnet is fixedly connected inside the feeding chamber, the electromagnet is magnetically connected to the first piston plate, and a spray hole is provided at one end of the feeding chamber near the stirring rod.

[0010] Preferably, the stirring rod is provided with a feeding pipe inside, and the feeding chamber is provided with a connecting hole at one end near the stirring rod, the connecting hole being connected to the feeding pipe.

[0011] Preferably, the stirring assembly has an air chamber at one end near the top of the device body, and the air chamber has a first through hole and a second through hole inside. The first through hole is connected to the interior of the device body, and the side wall of the air chamber has a third through hole connected to the outside.

[0012] Preferably, a fourth through hole is provided inside the regulating cavity, which is connected to the second through hole. A switch is fixedly connected to the inner wall of the regulating cavity, and the switch is connected to the electromagnet inside the feeding cavity.

[0013] Preferably, the stirring assembly further includes a connecting shaft disposed inside the device body, and the air chamber is opened inside the connecting shaft at one end near the top of the device body.

[0014] Preferably, the stirring rod is fixedly connected to the connecting shaft, and there are multiple stirring rods arranged in an array along the central axis of the equipment body. The end of the connecting shaft away from the air chamber passes through the equipment body. A feeding chamber is opened inside the connecting shaft, and the feeding chamber is connected to the feeding pipe. One end of the feeding chamber is connected to an external pipe for conveying additives.

[0015] Preferably, a drive motor is fixedly connected to one end of the device body, and the output end of the drive motor is fixedly connected to the stirring assembly. A feed port for adding raw materials for preparing nano-titanium sol into the device body is opened at one end of the device body. Multiple top blocks are arranged in a circular array along the middle perimeter of the inner wall of the device body. When the piston column contacts the top block, the top block can make the piston column slide inside the adjustment cavity.

[0016] The technical effects and advantages of this invention are as follows:

[0017] This invention uses multiple feeding components to evenly spray equal amounts of additives into the interior of the equipment, preventing the problem of drastic local pH changes caused by directly adding concentrated acid or alkali to the sol, which could disrupt the stability of the particles. It also avoids the problem of adding additives directly from the reactor via the stirring rod during stirring, where the centrifugal force generated during stirring causes a larger amount of additive near the stirring rod end, leading to drastic local pH changes. Furthermore, after each addition of additives into the equipment, the gas pressure inside the equipment is reduced by adjusting the components and the gas chamber, thereby regulating the pressure on the raw materials inside the equipment. This prevents the total volume of the solution inside the reactor from increasing with the addition of pH-added additives, which could lead to increased pressure inside the reactor. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 is a cross-sectional view of the overall structure of the electromagnet of the present invention when it is de-energized.

[0020] Figure 3 is a schematic diagram of the structure of the constant stirring component of the present invention.

[0021] Figure 4 is a cross-sectional view of the overall structure of the moving electromagnet of the present invention when it is energized.

[0022] Figure 5 is an enlarged schematic diagram of part A of the structure in Figure 2 of the present invention.

[0023] Figure 6 is an enlarged schematic diagram of part B of the present invention as shown in Figure 4.

[0024] The attached figures are labeled as follows: 1. Equipment body; 11. Drive motor; 12. Feed inlet; 13. Top block; 2. Stirring assembly; 21. Stirring rod; 22. Air chamber; 221. First through hole; 222. Second through hole; 223. Third through hole; 23. Connecting shaft; 231. Feeding chamber; 3. Feeding assembly; 31. Feeding chamber; 311. Spray hole; 312. Connecting hole; 32. First piston plate; 33. First elastic element; 34. Electromagnet; 4. Adjusting assembly; 41. Adjusting chamber; 411. Fourth through hole; 42. Piston column; 43. Second elastic element. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] In actual production, it was found that directly adding concentrated acid or alkali to the sol would cause drastic changes in local pH, which would disrupt the stability of the particles. This embodiment was invented to solve the above problem.

[0028] Please refer to Figures 1 to 6. An embodiment of the present invention provides a low-temperature controllable gelation nano-titanium sol preparation device, including a device body 1, a stirring assembly 2, a feeding assembly 3, and an adjusting assembly 4. The stirring assembly 2 includes a stirring rod 21 disposed inside the device body 1, which is used to stir the materials inside the device body 1. The feeding assembly 3 consists of multiple components arranged in an array on the stirring rod 21, and each feeding assembly 3 can add an equal amount of additive to the device body 1. The adjusting assembly 4 is disposed at both ends of the stirring rod 21, and can control the opening and closing of the feeding assembly 3, and can adjust the internal pressure of the device body 1 when the feeding assembly 3 adds additive to the device body 1.

[0029] Please refer to Figures 4 and 6. The feeding assembly 3 includes a feeding chamber 31 disposed on the stirring rod 21. A first piston plate 32 is slidably connected inside the feeding chamber 31. A first elastic member 33 is disposed inside the feeding chamber 31. One end of the first elastic member 33 is fixedly connected to the first piston plate 32, and the other end of the first elastic member 33 is fixedly connected to the inner wall of the feeding chamber 31.

[0030] Please refer to Figures 2 and 5. The adjustment assembly 4 includes an adjustment cavity 41 disposed at one end of the stirring rod 21. A piston column 42 is slidably connected inside the adjustment cavity 41. A second elastic element 43 is disposed inside the adjustment cavity 41. One end of the second elastic element 43 is fixedly connected to the piston column 42, and the other end of the second elastic element 43 is fixedly connected to the inner wall of the adjustment cavity 41.

[0031] Please refer to Figure 6. An electromagnet 34 is fixedly connected inside the feeding chamber 31. The electromagnet 34 is magnetically connected to the first piston plate 32. When the electromagnet 34 is energized, it can attract the first piston plate 32, causing it to move closer to the electromagnet 34. A spray hole 311 is provided at one end of the feeding chamber 31 near the stirring rod 21. The spray hole 311 is connected to the inside of the equipment body 1, and can spray the additive inside the feeding chamber 31 into the inside of the equipment body 1. A one-way valve is provided at the spray hole 311.

[0032] Please refer to Figure 6. The stirring rod 21 is provided with a feeding pipe inside. The feeding chamber 31 is provided with a connection hole 312 at one end near the stirring rod 21. The connection hole 312 is connected to the feeding pipe. A one-way valve is provided at the connection hole 312. When the first piston plate 32 moves towards the electromagnet 34 inside the feeding chamber 31, the additive inside the feeding pipe can enter the feeding chamber 31 through the connection hole 312.

[0033] Please refer to Figures 3 and 4. The stirring assembly 2 has an air chamber 22 at one end near the top of the equipment body 1. The air chamber 22 has a first through hole 221 and a second through hole 222 inside. The first through hole 221 is connected to the interior of the equipment body 1. The side wall of the air chamber 22 has a third through hole 223, which is connected to the outside. If the gas discharged from the third through hole 223 needs to be treated according to actual production needs, the third through hole 223 is connected to a gas treatment device. One-way valves are provided at both the first through hole 221 and the third through hole 223. This is existing technology and will not be described in detail here.

[0034] Please refer to Figures 3 and 5. The regulating cavity 41 has a fourth through hole 411 inside, which is connected to the second through hole 222. A switch is fixedly connected to the inner wall of the regulating cavity 41. The switch is electrically connected to the electromagnet 34 inside the feeding cavity 31. When the piston 42 touches the switch, the electromagnet 34 is energized. When the piston 42 moves away from the switch, the electromagnet 34 is de-energized. The fourth through hole 411 and the second through hole 222 are connected through a flexible air tube or pipe. This is the prior art and will not be described in detail here.

[0035] Please refer to Figures 2 and 3. The stirring assembly 2 also includes a connecting shaft 23 disposed inside the device body 1. An air chamber 22 is opened inside the connecting shaft 23 near the top of the device body 1. The stirring rod 21 is fixedly connected to the connecting shaft 23. There are multiple stirring rods 21, which are arranged in an array along the central axis of the device body 1. The end of the connecting shaft 23 away from the air chamber 22 passes through the device body 1. A feeding chamber 231 is opened inside the connecting shaft 23. The feeding chamber 231 is connected to the feeding pipe. One end of the feeding chamber 231 is connected to the external pipe for conveying additives.

[0036] Please refer to Figure 1. One end of the device body 1 is fixedly connected to a drive motor 11. The output end of the drive motor 11 is fixedly connected to the stirring assembly 2. One end of the device body 1 is provided with a feed port 12 for adding raw materials for preparing nano-titanium sol into the device body 1. A control valve is provided at the feed port 12. As shown in Figure 4, multiple top blocks 13 are arranged in a circular array along the middle perimeter of the inner wall of the device body 1. When the piston column 42 contacts the top block 13, the top block 13 can make the piston column 42 slide inside the adjustment chamber 41.

[0037] In use, the raw materials for preparing the nano-adhesive solution are fed into the equipment body 1 through the inlet 12, and additives are added into the feed pipe through the feed chamber 231. The drive motor 11 is started to drive the connecting shaft 23 and the stirring rod 21 to rotate and stir the raw materials inside the equipment body 1. When the stirring rod 21 rotates to the position of the top block 13, the piston column 42 is squeezed by the top block 13 as the stirring rod 21 rotates, and the second elastic element 43 is compressed, so that the piston column 42 slides towards the switch inside the regulating chamber 41. When the piston column 42 slides to contact the switch, the electromagnet 34 inside the feeding chamber 31 is energized, so that the electromagnet 34 attracts the first piston plate 32, so that the first piston plate 32 slides towards the electromagnet 34, and the first elastic element 33 is compressed, so that a negative pressure is generated inside the feeding chamber 31, and the additives inside the feed pipe enter the feeding chamber 31. As the stirring rod 21 rotates and gradually moves away from the top block 13, the piston column 42 slides away from the switch, and the second elastic element 43 returns to its original position. When the piston rod 42 is no longer in contact with the switch, the electromagnet 34 is de-energized, thus the first piston plate 32 is no longer attracted, the first elastic element 33 returns to its original state, and the first piston plate 32 slides away from the electromagnet 34. The additive inside the feeding chamber 31 is squeezed and sprayed into the equipment body 1 through the spray hole 311. The electromagnet 34 attracts the first piston plate 32, causing it to slide inside the feeding chamber 31, creating a negative pressure inside the feeding chamber 31, which draws the additive into the feeding chamber 31. This results in an equal amount of additive entering multiple feeding chambers 31, and the additive is sprayed into the equipment body 1 through the spray hole 311. This ensures that the additive enters the equipment body 1 in an equal and uniform manner, preventing the problem of drastic local pH changes caused by directly adding concentrated acid or alkali to the sol, which would disrupt the stability of the particles. At the same time, it avoids the problem of adding additive directly from the inside of the reactor through the stirring rod 21 during the stirring process, where the centrifugal force generated during stirring causes more additive near the end of the stirring rod 21, leading to drastic local pH changes.

[0038] Example 2

[0039] In actual use, it was found that the addition of pH additives increases the total volume of the solution inside the reactor, which in turn increases the internal pressure of the reactor. Further improvements were made based on the above embodiments.

[0040] Based on the above embodiments, during use, when the stirring rod 21 rotates to the position of the top block 13, the piston rod 42 is squeezed by the top block 13 as the stirring rod 21 rotates, causing the piston rod 42 to slide towards the switch inside the regulating chamber 41. The gas inside the regulating chamber 41 is compressed, causing the gas inside the regulating chamber 41 to enter the gas chamber 22 through the fourth through hole 411 and the second through hole 222, thereby increasing the pressure inside the gas chamber 22. The gas inside the gas chamber 22 is discharged from the device body 1 through the third through hole 223. When the stirring rod 21 gradually moves away from the top block 13 as it rotates, the piston rod 42 slides away from the switch. At this time, a negative pressure is generated inside the regulating chamber 41, causing the gas inside the gas chamber 22 to pass through the second through hole 223. Through-hole 222 enters the regulating chamber 41 through the fourth through-hole 411, thereby creating a negative pressure inside the gas chamber 22. This causes the gas inside the equipment body 1 to be drawn into the gas chamber 22 through the first through-hole 221, thus reducing the pressure inside the equipment body 1. By setting one-way valves at the first through-hole 221 and the third through-hole 223, external gas is prevented from entering the equipment body 1 through the gas chamber 22 and compromising the sealing of the equipment body 1. By reducing the gas pressure inside the equipment body 1 each time an additive is added, the pressure on the raw materials inside the equipment body 1 is regulated, thereby preventing the increase in the total volume of the solution inside the reactor due to the addition of pH additives, which would lead to an increase in the pressure inside the reactor.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for preparing low-temperature controllable gelation of nano-titanium sol, comprising a device body, characterized in that, Also includes: The mixing assembly includes a mixing rod disposed inside the equipment body for mixing materials inside the equipment body; a feeding assembly, comprising multiple feeding assemblies arranged in an array on the mixing rod, each feeding assembly capable of adding an equal amount of additive into the equipment body; and an adjusting assembly disposed at both ends of the mixing rod, capable of controlling the opening and closing of the feeding assemblies and adjusting the internal pressure of the equipment body when the feeding assemblies add additive into the equipment body.

2. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 1, characterized in that: The feeding assembly includes a feeding chamber disposed on a stirring rod. A first piston plate is slidably connected inside the feeding chamber. A first elastic element is disposed inside the feeding chamber. One end of the first elastic element is fixedly connected to the first piston plate, and the other end of the first elastic element is fixedly connected to the inner wall of the feeding chamber.

3. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 1, characterized in that: The adjustment assembly includes an adjustment cavity disposed at one end of the stirring rod, a piston column slidably connected inside the adjustment cavity, and a second elastic element disposed inside the adjustment cavity. One end of the second elastic element is fixedly connected to the piston column, and the other end of the second elastic element is fixedly connected to the inner wall of the adjustment cavity.

4. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 2, characterized in that: An electromagnet is fixedly connected inside the feeding chamber, and the electromagnet is magnetically connected to the first piston plate. A spray hole is provided at one end of the feeding chamber near the stirring rod.

5. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 4, characterized in that: The stirring rod has a feeding pipe inside, and the feeding chamber has a connecting hole at one end near the stirring rod, which is connected to the feeding pipe.

6. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 3, characterized in that: The stirring assembly has an air chamber at one end near the top of the equipment body. The air chamber has a first through hole and a second through hole inside. The first through hole is connected to the interior of the equipment body. The side wall of the air chamber has a third through hole, which is connected to the outside.

7. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 6, characterized in that: The regulating cavity has a fourth through hole, which is connected to the second through hole. A switch is fixedly connected to the inner wall of the regulating cavity, and the switch is connected to the electromagnet signal inside the feeding cavity.

8. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 7, characterized in that: The stirring assembly also includes a connecting shaft disposed inside the device body, and the air chamber is opened inside the connecting shaft at one end near the top of the device body.

9. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 8, characterized in that: The stirring rod is fixedly connected to the connecting shaft. There are multiple stirring rods arranged in an array along the central axis of the equipment body. The end of the connecting shaft away from the air chamber passes through the equipment body. A feeding chamber is opened inside the connecting shaft. The feeding chamber is connected to the feeding pipe. One end of the feeding chamber is connected to an external pipe for conveying additives.

10. The equipment for preparing low-temperature controllable gelation of nano-titanium sol according to claim 9, characterized in that: One end of the device body is fixedly connected to a drive motor, and the output end of the drive motor is fixedly connected to a stirring assembly. One end of the device body is provided with a feed port for adding raw materials for preparing nano-titanium sol into the device body. Multiple top blocks are arranged in a circular array along the middle perimeter of the inner wall of the device body. When the piston column contacts the top block, the top block can make the piston column slide inside the adjustment chamber.

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