Single removal device and method applied to preparation of strong weather-resistant phenylpropylene emulsion

Abstract

The application relates to the technical field of singling equipment, and discloses singling equipment and a singling method applied to preparation of strong weather-resistant styrene-acrylic emulsion, which comprises a singling mechanism arranged on the top of a box body and extending into the box body, and used for singling treatment of the strong weather-resistant styrene-acrylic emulsion. The heating assembly of the singling mechanism is arranged between a material conveying assembly and an auxiliary assembly, so that the steam conveyed by the heating assembly can be used for preheating the strong weather-resistant styrene-acrylic emulsion and an initiator, thereby improving the singling efficiency of the monomers in the strong weather-resistant styrene-acrylic emulsion. The steam, the strong weather-resistant styrene-acrylic emulsion and the initiator are contacted in a ring-shaped spraying mode, the contact area is increased, and the singling efficiency of the monomers is further improved. The filtering mechanism is used for filtering the strong weather-resistant styrene-acrylic emulsion during conveying, so that the caked impurities in the strong weather-resistant styrene-acrylic emulsion do not affect the singling effect.

Description

Technical Field

[0001] This invention relates to the field of single-phase removal equipment technology, specifically to single-phase removal equipment and methods applied to the preparation of highly weather-resistant styrene-acrylic emulsions. Background Technology

[0002] Polymer latex has been widely used in coatings, adhesives, papermaking auxiliaries, leather and textile auxiliaries, etc. Polymer latex is mainly obtained through emulsion polymerization. Since the monomer conversion rate during polymerization cannot reach 100%, some unreacted monomers remain in the latex, typically 0.5%-1.0%, causing the product to have an odor. When the product is used, the residual monomers volatilize, causing environmental pollution and harming the health of users.

[0003] Chinese Patent CN204073475U discloses a device for removing residual monomers from copolymer resin emulsions. The background art addresses the following problems: During polymerization, material transfer, and monomer removal, emulsions may become unstable and break down, with agglomerated particles easily clogging transfer valves and pipelines. Especially under the stirring action in the monomer removal vessel, a large amount of agglomerates adheres to the stirring shaft and vessel wall. Manual cleaning of the agglomerates in the vessel is required, the replacement time before entering the vessel is long, and the cleaning operation is labor-intensive. Furthermore, monomer removal under vacuum vessel stirring is time-consuming and ineffective. Prolonged monomer removal can also cause intermolecular dehydration of the resin, leading to yellowing and affecting resin quality. Chinese Patent CN106334329B discloses a polymer emulsion monomer removal experimental device. The background art describes the following problems: During stripping, a small amount of steam condenses, causing a decrease in emulsion concentration, requiring subsequent concentration. Both stripping and concentration processes generate a small amount of agglomerates, necessitating shutdown for cleaning, which affects the equipment's production capacity. For different emulsion systems, it is necessary to determine and optimize suitable stripping and descaling process conditions. Based on existing technologies, the following problems exist;

[0004] While the aforementioned application documents aim to improve the monomer removal effect and reduce the amount of residual monomer by controlling multiple influencing factors in the monomer removal process, such as temperature and vacuum, in actual monomer removal, a combination of stripping and post-polymerization methods is usually used to separate the monomers in the emulsion. This method requires sufficient contact between steam, emulsion, and initiator to ensure the monomer removal effect. However, in practice, the degree of contact between steam, emulsion, and initiator is often unsatisfactory, thus reducing the monomer removal effect. Furthermore, if the emulsion is not preheated before contacting the steam, or if the preheating effect is poor, or if the preheating structure is complex, the temperature of the emulsion will rise sharply after contact with the steam, resulting in coagulation and affecting the monomer removal effect. Therefore, this paper proposes a monomer removal device and method for the preparation of highly weather-resistant styrene-acrylic emulsions. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides a separation device and method for preparing highly weather-resistant styrene-acrylic emulsions, which allows steam to be transported between the emulsion and the initiator, facilitating the preheating of the emulsion and the initiator by the heat of the steam, thereby improving the separation effect and ensuring the degree of contact between the emulsion, steam and initiator, further improving the separation effect.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a de-monochrome device for the preparation of strong weather-resistant styrene-acrylic emulsion, comprising a housing and a de-monochrome mechanism disposed on the top of the housing and extending into the housing, the de-monochrome mechanism being used to de-monochrome the strong weather-resistant styrene-acrylic emulsion, the de-monochrome mechanism comprising a heating component disposed on the top of the housing, a conveying component disposed inside the heating component for conveying the strong weather-resistant styrene-acrylic emulsion, and an auxiliary component disposed outside the heating component for conveying the initiator, by placing the heating component between the auxiliary component and the conveying component, so that the steam conveyed by the heating component preheats the strong weather-resistant styrene-acrylic emulsion and the initiator, while the steam and the initiator are contacted with the strong weather-resistant styrene-acrylic emulsion by an annular spray method, the heating component comprising;

[0007] The outer cylinder is fixedly fitted onto the top of the box and extends into the box;

[0008] The inner cylinder is fixedly fitted inside the outer cylinder, and a cavity for steam flow is left between the inner and outer cylinders. The lower ends of both the inner and outer cylinders are designed as inverted frustums. The material conveying assembly includes:

[0009] The shell is fixed to the lower end of the inner wall of the inner cylinder, and the interior of the shell is equipped with a filter mechanism for filtering impurities in the highly weather-resistant styrene-acrylic emulsion.

[0010] Furthermore, the heating assembly also includes;

[0011] The first air guide box is fixedly installed on the inner wall of the inner cylinder and located at the bottom of the shell. The air inlet of the first air guide box is connected to the cavity. The exhaust end of the first air guide box is fixedly provided with a first nozzle arranged in a ring array for spraying steam. The bottom and top of the inner cylinder and the outer cylinder are respectively fixedly provided with a first sealing plate and a second sealing plate for sealing the inner cylinder and the outer cylinder, so as to allow steam to flow along a preset channel. The inner wall of the outer cylinder is fixedly provided with an air inlet pipe extending to the outer cylinder body. Both the inner cylinder and the outer cylinder are made of heat-conducting material.

[0012] The air guide pipes are fixedly sleeved on the top of the first sealing plate in a ring array and extend to the bottom of the first sealing plate. The bottom of the first sealing plate is fixedly provided with a second air guide box. The exhaust end of the air guide pipes is connected to the air inlet end of the second air guide box. The exhaust end of the second air guide box is fixedly provided with a second nozzle arranged in a ring array for spraying steam. The first nozzle and the second nozzle are both designed to be inclined and are both inclined to the side away from the shell. The first air guide box and the second air guide box are both designed to be ring-shaped, and the inner side of the second air guide box is located on the outer side of the inner cylinder.

[0013] Furthermore, the feeding assembly also includes;

[0014] The drainage box is fixedly installed at the bottom of the shell, and the top of the drainage box is connected to the bottom of the shell. The drainage end of the drainage box is fixedly equipped with a third nozzle for spraying strong weather-resistant styrene-acrylic emulsion. The drainage box is used to guide the strong weather-resistant styrene-acrylic emulsion filtered by the filtration mechanism in the shell to the third nozzle.

[0015] The first coil is fixedly sleeved on the inner wall of the inner cylinder and is made of heat-conducting material. It is used to conduct the heat of steam to the strong weather-resistant styrene-acrylic emulsion. The drain end of the first coil is fixedly connected to a conveying pipe extending into the shell through a multi-port pipe. The water inlet end of the first coil is fixedly connected to a first feed pipe extending into the outer cylinder. The strong weather-resistant styrene-acrylic emulsion is fed into the shell through the feed pipe, the first coil and the conveying pipe.

[0016] Furthermore, the auxiliary components include:

[0017] An installation sleeve is fixedly fitted onto the top of the housing and extends into the housing. A second coil is fixedly installed on the inner wall of the installation sleeve. The inner wall of the second coil is fixedly connected to the outer wall of the outer cylinder. A second feed pipe extending out of the installation sleeve is fixedly installed at the water inlet end of the second coil. The second coil is made of a heat-conducting material. A third sealing plate is fixedly installed between the installation sleeve and the outer cylinder to seal the installation sleeve and the outer cylinder.

[0018] The first liquid guide box is fixedly sleeved on the lower end of the outer wall of the outer cylinder, and the water inlet end of the first liquid guide box is connected to the drain end of the second coil. The drain end of the first liquid guide box is fixedly provided with a ring array arrangement that extends into the inner cylinder to form a material guide pipe.

[0019] The second liquid guide box is fixedly sleeved on the inner wall of the inner cylinder and located at the bottom of the first air guide box. The drain end of the material guide pipe is connected to the water inlet end of the second liquid guide box. The drain end of the second liquid guide box is fixedly provided with a fourth nozzle arranged in a ring array for spraying the initiator. Both the first liquid guide box and the second liquid guide box are designed in a ring shape. The fourth nozzle is designed in an inclined shape and is inclined to the side away from the shell.

[0020] Furthermore, the filtration mechanism includes a cleaning assembly, which includes;

[0021] The filter plate is fixedly sleeved on the inner wall of the shell. The top of the filter plate is rotatably equipped with a rotating shaft. The top of the rotating shaft is rotatably connected to the top inner wall of the shell. The upper end of the side wall of the rotating shaft is fixedly equipped with a diagonal flow type wheel, which is used to drive the diagonal flow type wheel to rotate when the strong weather-resistant styrene-acrylic emulsion flows downward along the shell, thereby driving the rotating shaft to rotate.

[0022] Furthermore, the cleaning assembly also includes;

[0023] The fixing component is fixedly sleeved on the side wall of the rotating shaft and located at the bottom of the inclined flow impeller. The outer wall of the fixing component is fixedly provided with a hinge frame, and the inner side of the hinge frame is hinged with a hinge member. The bottom of the hinge member is fixedly provided with a scraper for cleaning the filter plate. The top two sides of the hinge frame are provided with limiting components for limiting the scraper, and the limiting components are all located in the opposite direction of the hinge frame rotating with the rotating shaft.

[0024] Furthermore, the limiting component includes;

[0025] The limiting component is fixedly installed on both sides of the top of the hinge frame. The bottom of the limiting component is fixedly provided with a limiting rod with a bent design. A limiting groove is opened at the end of the limiting rod away from the limiting component. A spring is fixedly sleeved on the inner wall of the limiting groove. A limiting seat is sleeved on the outer wall of the end of the limiting rod away from the limiting component. The limiting seat moves along the outer wall of the limiting rod. The spring is used to provide elastic support for the limiting seat, and the end of the spring away from the limiting rod is fixedly connected to the inner wall of the limiting seat.

[0026] Furthermore, the limiting component also includes;

[0027] The first limiting ring is fixedly sleeved on the outer wall of the end of the limiting rod away from the limiting member;

[0028] The second limiting ring is fixedly sleeved on the inner wall of the limiting seat near the limiting rod, and the second limiting ring is located on the side of the first limiting ring near the limiting member. It is used to limit the first limiting ring against the second limiting ring, so as to limit the limiting seat.

[0029] Furthermore, the bottom inner wall of the box is fixedly provided with a discharge pipe extending to the bottom of the box and used to discharge the strong weather-resistant styrene-acrylic emulsion after monomer separation from the box, and the inner side wall of the box is fixedly provided with an exhaust pipe extending to the outside of the box and used to discharge steam from the outside of the box.

[0030] The method of using a de-monopolymer equipment for the preparation of highly weather-resistant styrene-acrylic emulsions includes the following steps:

[0031] S1: The strong weather-resistant styrene-acrylic emulsion is sprayed into the inner cylinder through the feeding assembly, and steam is sprayed into the inner cylinder through the heating assembly. The strong weather-resistant styrene-acrylic emulsion is brought into contact with the steam in a ring-shaped spraying manner to separate the monomers in the strong weather-resistant styrene-acrylic emulsion.

[0032] S2: While separating the monomers in the strong weather-resistant styrene-acrylic emulsion by steam, the initiator is sprayed into the inner cylinder by the auxiliary component, so that the initiator comes into contact with the strong weather-resistant styrene-acrylic emulsion. Then, the auxiliary heating component separates the monomers in the strong weather-resistant styrene-acrylic emulsion. When the strong weather-resistant styrene-acrylic emulsion and the initiator are conveyed by the conveying component and the auxiliary component, they are preheated by steam.

[0033] S3: After the weather-resistant styrene-acrylic emulsion comes into contact with steam and initiator, the lower ends of both the inner and outer cylinders are designed in an inverted frustum shape, causing the weather-resistant styrene-acrylic emulsion to flow downwards along the inner wall of the inner cylinder. The steam is then brought into contact with the weather-resistant styrene-acrylic emulsion again by the heating component, further separating the monomers in the weather-resistant styrene-acrylic emulsion.

[0034] This invention provides a device and method for removing monomers used in the preparation of highly weather-resistant styrene-acrylic emulsions. Compared with the prior art, it has the following advantages:

[0035] 1. This invention places the heating component of the monomer separation mechanism between the conveying component and the auxiliary component, which facilitates the preheating of the weather-resistant styrene-acrylic emulsion and the initiator by the steam conveyed by the heating component, thereby improving the efficiency of monomer separation in the weather-resistant styrene-acrylic emulsion. Furthermore, the use of a ring-jet method to bring the steam, weather-resistant styrene-acrylic emulsion, and initiator into contact increases their contact area, further improving the monomer separation efficiency. During the conveying process of the weather-resistant styrene-acrylic emulsion, the filtration mechanism filters the emulsion to prevent impurities such as clumps from affecting the monomer separation effect.

[0036] 2. By placing the heating component of the monomer removal mechanism between the feeding component and the auxiliary component, the present invention facilitates the preheating of the strong weather-resistant styrene-acrylic emulsion and the preheating of the initiator, thereby improving the polymerization effect of the strong weather-resistant styrene-acrylic emulsion and thus improving the monomer conversion efficiency and reducing the amount of monomer residue.

[0037] 3. The present invention designs the lower ends of both the inner and outer cylinders as inverted frustum shapes, which guides the strong weather-resistant styrene-acrylic emulsion after it comes into contact with the steam ejected from the first nozzle, allowing it to flow downward along the inner wall of the inner cylinder. This allows the steam to come into contact with the strong weather-resistant styrene-acrylic emulsion again through the second nozzle, thereby further separating the monomers in the strong weather-resistant styrene-acrylic emulsion and improving the monomer separation effect.

[0038] 4. This invention uses a filter plate in the filtration mechanism to filter the highly weather-resistant styrene-acrylic emulsion during its transport. Furthermore, the flow of the emulsion within the housing drives the diagonal-flow impeller to rotate, which in turn drives the scraper to clean the filter plate. This prevents impurities from clogging the filter pores, ensuring the filtration effect and avoiding any impact on actual use. It also eliminates the need for an external power source, saving costs and facilitating practical application.

[0039] 5. This invention hinges the hinged parts within the hinged frame, so that when the oblique flow rotary wheel drives the scraper to rotate, the scraper rotates at a certain tilt angle under the resistance of the highly weather-resistant styrene-acrylic emulsion. During long-term cleaning, the scraper wears down, and the tilt of the scraper ensures that it can still contact the top of the filter plate after a certain degree of wear. Compared with the traditional vertically installed scraper, it is more convenient for long-term cleaning and use. Furthermore, the tilt of the scraper is limited by the limiting component to ensure that the scraper contacts the top of the filter plate, thereby avoiding affecting the cleaning effect. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of the desiccant device for the preparation of highly weather-resistant styrene-acrylic emulsions according to the present invention;

[0041] Figure 2 This is a schematic cross-sectional view of the box structure of the present invention;

[0042] Figure 3 This is a schematic diagram of the single-disconnection mechanism of the present invention;

[0043] Figure 4 This is a schematic diagram of the auxiliary components, heating components, and material conveying components of the present invention;

[0044] Figure 5 This is a schematic diagram of the auxiliary component structure of the present invention;

[0045] Figure 6 For the present invention Figure 5 A magnified structural diagram of A in the middle;

[0046] Figure 7 This is a schematic diagram of the structure of the first liquid guide tank, the second coil, and the second feed pipe of the present invention;

[0047] Figure 8 This is a schematic diagram of the heating component structure of the present invention;

[0048] Figure 9 For the present invention Figure 8 A magnified structural diagram of B in the diagram;

[0049] Figure 10 For the present invention Figure 8 A magnified structural diagram of C;

[0050] Figure 11 This is a schematic diagram of the material conveying assembly structure of the present invention;

[0051] Figure 12 This is a schematic cross-sectional view of the housing structure of the present invention;

[0052] Figure 13 This is an exploded view of the cleaning and scraping assembly of the present invention;

[0053] Figure 14 This is a schematic diagram of the cleaning and scraping component structure of the present invention;

[0054] Figure 15 This is a schematic diagram of the limiting component structure of the present invention.

[0055] The reference numerals in the above figures are as follows: 1. Housing; 2. Single-layer removal mechanism; 4. Filtering mechanism;

[0056] 21. Auxiliary components; 22. Heating components; 23. Material conveying components;

[0057] 211. Installation sleeve; 212. Second coil; 213. First liquid guide tank; 214. Feed guide pipe; 215. Fourth nozzle; 216. Second liquid guide tank; 217. Second feed pipe;

[0058] 221. Inlet pipe; 222. Outer cylinder; 223. Inner cylinder; 224. First air guide box; 225. Cavity; 226. First nozzle; 227. Second nozzle; 228. Second air guide box; 229. Air guide pipe;

[0059] 231. First feed pipe; 232. First coil; 233. Conveyor pipe; 234. Shell; 235. Drain box; 236. Third nozzle;

[0060] 41. Scraping assembly; 42. Limiting assembly;

[0061] 411. Rotating shaft; 412. Diagonal flow impeller; 413. Hinge frame; 414. Filter plate; 415. Hinge component; 416. Fixing component; 417. Scraper;

[0062] 421. Limiting component; 422. Limiting rod; 423. Spring; 424. Second limiting ring; 425. Limiting seat; 426. First limiting ring. Detailed Implementation

[0063] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] Example 1; please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 12A de-monopolymer removal device for the preparation of strong weather-resistant styrene-acrylic emulsion includes a housing 1 and a de-monopolymer removal mechanism 2 located on the top of the housing 1 and extending into the housing 1. The de-monopolymer removal mechanism 2 is used to remove the strong weather-resistant styrene-acrylic emulsion. The de-monopolymer removal mechanism 2 includes a heating component 22 located on the top of the housing 1, a conveying component 23 located inside the heating component 22 for conveying the strong weather-resistant styrene-acrylic emulsion, and an auxiliary component 21 located outside the heating component 22 for conveying the initiator. By positioning the heating component 22 between the auxiliary component 21 and the conveying component 23, the steam conveyed by the heating component 22 preheats the strong weather-resistant styrene-acrylic emulsion and the initiator, while the steam and initiator are brought into contact with the strong weather-resistant styrene-acrylic emulsion by an annular spray method.

[0065] The bottom inner wall of the box 1 is fixedly provided with a discharge pipe extending to the bottom of the box 1 and used to discharge the strong weather-resistant styrene-acrylic emulsion after monomer separation from the box 1. The inner side wall of the box 1 is fixedly provided with an exhaust pipe extending to the outside of the box 1 and used to discharge steam from the outside of the box 1. The discharge pipe facilitates the discharge of the strong weather-resistant styrene-acrylic emulsion after monomer separation from the box 1, and the exhaust pipe facilitates the discharge of steam and monomers in the strong weather-resistant styrene-acrylic emulsion from the box 1, which is convenient for practical use.

[0066] Please see Figure 8 , Figure 9 and Figure 10 The heating component 22 includes;

[0067] The outer cylinder 222 is fixedly sleeved on the top of the box 1 and extends into the box 1;

[0068] The inner cylinder 223 is fixedly sleeved inside the outer cylinder 222, and a cavity 225 for steam flow is left between the inner cylinder 223 and the outer cylinder 222. The lower ends of the inner cylinder 223 and the outer cylinder 222 are both designed as inverted frustums. The material conveying assembly 23 includes:

[0069] The housing 234 is fixedly installed at the lower end of the inner wall of the inner cylinder 223. The housing 234 is equipped with a filter mechanism 4 for filtering impurities in the strong weather-resistant styrene-acrylic emulsion.

[0070] Heating component 22 also includes;

[0071] The first air guide box 224 is fixedly installed on the inner wall of the inner cylinder 223 and located at the bottom of the shell 234. The air inlet end of the first air guide box 224 is connected to the cavity 225. The exhaust end of the first air guide box 224 is fixedly provided with a first nozzle 226 arranged in a ring array for spraying steam. The bottom and top of the inner cylinder 223 and the outer cylinder 222 are respectively fixedly provided with a first sealing plate and a second sealing plate for sealing the inner cylinder 223 and the outer cylinder 222, so that steam can flow along a preset channel. The inner wall of the outer cylinder 222 is fixedly provided with an air inlet pipe 221 extending to the outside of the outer cylinder 222. Both the inner cylinder 223 and the outer cylinder 222 are made of heat-conducting material.

[0072] The air guide pipes 229 are fixedly sleeved on the top of the first sealing plate in a ring array and extend to the bottom of the first sealing plate. The bottom of the first sealing plate is fixedly provided with a second air guide box 228. The exhaust end of the air guide pipes 229 is connected to the air inlet end of the second air guide box 228. The exhaust end of the second air guide box 228 is fixedly provided with a second nozzle 227 arranged in a ring array for spraying steam. The first nozzle 226 and the second nozzle 227 are both inclined and inclined to the side away from the shell 234. The first air guide box 224 and the second air guide box 228 are both annular, and the inner side of the second air guide box 228 is located on the outer side of the inner cylinder 223.

[0073] In specific implementation, steam is introduced into the cavity 225 between the outer cylinder 222 and the inner cylinder 223 through the air inlet pipe 221. The steam flows through the cavity 225 to the first air guide box 224, and is discharged through the first air guide box 224 to the first nozzle 226. Thus, the steam is sprayed out through the first nozzle 226, so that the steam can come into contact with the strong weather-resistant styrene-acrylic emulsion when the third nozzle 236 sprays it out. This allows the steam to carry out the monomers in the strong weather-resistant styrene-acrylic emulsion, thereby separating the monomers in the strong weather-resistant styrene-acrylic emulsion. Furthermore, since the first nozzle 226 has a ring design, the contact area between the strong weather-resistant styrene-acrylic emulsion and the steam is increased, thereby improving the monomer separation effect.

[0074] The steam in cavity 225 flows along the air guide pipe 229 to the second air guide box 228, and is discharged into the second nozzle 227 through the second air guide box 228. Since the lower ends of the inner cylinder 223 and the outer cylinder 222 are both designed as inverted frustums, the strong weather-resistant styrene-acrylic emulsion that has come into contact with the steam ejected from the first nozzle 226 is guided to flow downward along the inner wall of the inner cylinder 223. Thus, the steam comes into contact with the strong weather-resistant styrene-acrylic emulsion again through the second nozzle 227, etc., to further separate the monomers in the strong weather-resistant styrene-acrylic emulsion and improve the separation effect of monomers.

[0075] Because steam flows within cavity 225, its heat is transferred through inner cylinder 223 and outer cylinder 222 to the weather-resistant styrene-acrylic emulsion and initiator, preheating the emulsion and preventing a sudden temperature rise due to contact between the emulsion and steam. This prevents the emulsion from condensing due to a sudden temperature increase, thus avoiding any impact on monomer removal efficiency. Preheating the initiator also enhances its polymerization effect on the emulsion, thereby improving monomer conversion efficiency and reducing monomer residue. Heat loss during steam conduction prevents a sudden temperature rise in the emulsion and initiator, ensuring effective preheating. Furthermore, the heat conduction can be controlled by selecting the materials of outer cylinder 222, inner cylinder 223, first coil 232, and second coil 212, facilitating temperature control for both the emulsion and initiator and making it suitable for practical use.

[0076] Please see Figure 11 and Figure 12 The material conveying assembly 23 also includes;

[0077] The drainage box 235 is fixedly installed at the bottom of the housing 234. The top of the drainage box 235 is connected to the bottom of the housing 234. The drainage end of the drainage box 235 is fixedly provided with a third nozzle 236 for spraying strong weather-resistant styrene-acrylic emulsion. The drainage box 235 is used to guide the strong weather-resistant styrene-acrylic emulsion filtered by the filter mechanism 4 in the housing 234 to the third nozzle 236.

[0078] The first coil 232 is fixedly sleeved on the inner wall of the inner cylinder 223 and is made of a heat-conducting material. It is used to conduct the heat of the steam to the strong weather-resistant styrene-acrylic emulsion. The drain end of the first coil 232 is fixedly provided with a conveying pipe 233 extending into the shell 234 through a multi-port pipe. The water inlet end of the first coil 232 is fixedly provided with a first feed pipe 231 extending out of the outer cylinder 222. The strong weather-resistant styrene-acrylic emulsion is input into the shell 234 through the feed pipe, the first coil 232 and the conveying pipe 233.

[0079] In specific implementation, the strong weather-resistant styrene-acrylic emulsion is fed into the housing 234 through the first feed pipe 231, the first coil 232 and the conveying pipe 233. When the strong weather-resistant styrene-acrylic emulsion flows downward along the housing 234, it is filtered by the filter plate 414 and then enters the diversion box 235 and the third nozzle 236, and is then sprayed out through the third nozzle 236 to contact the steam.

[0080] The first coil 232 increases the contact area between the weather-resistant styrene-acrylic emulsion and the steam to transfer heat, thereby ensuring the preheating effect and preventing the temperature of the weather-resistant styrene-acrylic emulsion from rising sharply after direct contact with the steam, thus avoiding coagulation and other conditions, and thus avoiding affecting the separation of monomers in the weather-resistant styrene-acrylic emulsion.

[0081] By allowing the highly weather-resistant styrene-acrylic emulsion to flow from top to bottom along the housing 234, it is easy to drive the oblique flow impeller 412 to rotate, which in turn makes it easy to drive the scraper 417 of the cleaning assembly 41 to rotate, so as to clean the filter plate 414, ensure the filtration effect, and eliminate the need for an external power source, making it convenient for practical use and saving costs.

[0082] Please see Figure 5 , Figure 6 and Figure 7 Auxiliary component 21 includes;

[0083] The mounting sleeve 211 is fixedly fitted onto the top of the housing 1 and extends into the housing 1. A second coil 212 is fixedly provided on the inner wall of the mounting sleeve 211. The inner wall of the second coil 212 is fixedly connected to the outer wall of the outer cylinder 222. A second feed pipe 217 extending out of the mounting sleeve 211 is fixedly provided at the water inlet end of the second coil 212. The second coil 212 is made of a heat-conducting material. A third sealing plate for sealing the mounting sleeve 211 and the outer cylinder 222 is fixedly provided between the mounting sleeve 211 and the outer cylinder 222.

[0084] The first liquid guide box 213 is fixedly sleeved on the lower end of the outer wall of the outer cylinder 222, and the water inlet end of the first liquid guide box 213 is connected to the drain end of the second coil 212. The drain end of the first liquid guide box 213 is fixedly provided with a ring array arrangement and extends to the inner guide pipe 214 of the inner cylinder 223.

[0085] The second liquid guide box 216 is fixedly sleeved on the inner wall of the inner cylinder 223 and located at the bottom of the first air guide box 224. The drain end of the feed pipe 214 is connected to the water inlet end of the second liquid guide box 216. The drain end of the second liquid guide box 216 is fixedly provided with a fourth nozzle 215 arranged in a ring array for spraying initiator. The first liquid guide box 213 and the second liquid guide box 216 are both designed in a ring shape. The fourth nozzle 215 is designed in an inclined shape and is inclined to the side away from the shell 234.

[0086] In practical implementation, the initiator is connected to the second feed pipe 217 via an external pipeline, thereby conveying the initiator to the first liquid guide tank 213 via the second feed pipe 217 and the second coil 212. It is then conveyed to the second liquid guide tank 216 via the first liquid guide tank 213 and the feed pipe 214, and discharged to the fourth nozzle 215 via the second liquid guide tank 216. The initiator is then sprayed out through the fourth nozzle 215, thereby bringing the initiator into contact with the strong weather-resistant styrene-acrylic emulsion, allowing the monomers in the strong weather-resistant styrene-acrylic emulsion to continue to polymerize, thereby improving the monomer conversion efficiency and reducing the amount of monomer residue.

[0087] By arranging the fourth nozzle 215 in a ring array, the degree of contact and mixing between the initiator and the highly weather-resistant styrene-acrylic emulsion is increased, thereby improving the monomer conversion efficiency and thus helping to reduce the residual amount of monomer. Furthermore, by increasing the contact area between the initiator and the heat transferred by the steam through the second coil 212, the preheating effect of the initiator is ensured, thereby ensuring the conversion efficiency of the initiator to the monomer.

[0088] By spraying steam between the weather-resistant styrene-acrylic emulsion and the initiator, it is easier to preheat the weather-resistant styrene-acrylic emulsion and the initiator. Furthermore, by setting both the steam and the initiator to be sprayed in a ring shape, the contact degree between the steam, the weather-resistant styrene-acrylic emulsion and the initiator is improved, thereby improving the efficiency of single-product extraction.

[0089] The initiator, steam, and strong weather-resistant styrene-acrylic emulsion are all conveyed at a certain pressure during transportation, which is existing technology and will not be elaborated here. This is to ensure that the initiator, steam, and strong weather-resistant styrene-acrylic emulsion are sprayed evenly, thereby improving their contact effect. Furthermore, by conveying the strong weather-resistant styrene-acrylic emulsion at a certain pressure, it is easier to drive the oblique flow impeller 412 to rotate, which in turn makes it easier to drive the scraper 417 to rotate.

[0090] Example 2; please refer to Figure 12 and Figure 14 The difference between this embodiment and embodiment one is that the filter mechanism 4 includes a cleaning component 41;

[0091] Please see Figure 13 and Figure 14 The cleaning component 41 includes;

[0092] The filter plate 414 is fixedly sleeved on the inner side wall of the housing 234. The top of the filter plate 414 is rotatably provided with a rotating shaft 411. The top of the rotating shaft 411 is rotatably connected to the top inner wall of the housing 234. The upper end of the side wall of the rotating shaft 411 is fixedly provided with a diagonal flow type rotating wheel 412, which is used to drive the diagonal flow type rotating wheel 412 to rotate when the strong weather-resistant styrene-acrylic emulsion flows downward along the inside of the housing 234, thereby driving the rotating shaft 411 to rotate.

[0093] The cleaning component 41 also includes;

[0094] The fixing member 416 is fixedly sleeved on the side wall of the rotating shaft 411 and located at the bottom of the inclined flow impeller 412. The outer wall of the fixing member 416 is fixedly provided with a hinge frame 413. The inner side of the hinge frame 413 is hinged with a hinge member 415. The bottom of the hinge member 415 is fixedly provided with a scraper 417 for cleaning the filter plate 414. The top two sides of the hinge frame 413 are provided with limiting components 42 for limiting the scraper 417. The limiting components 42 are located in the opposite direction of the hinge frame 413 as it rotates with the rotating shaft 411.

[0095] In practical implementation, the strong weather-resistant styrene-acrylic emulsion is filtered through the filter plate 414 to avoid impurities such as clumps in the strong weather-resistant styrene-acrylic emulsion affecting the spraying effect of the third nozzle 236. This is beneficial for the third nozzle 236 to spray the strong weather-resistant styrene-acrylic emulsion evenly, thereby avoiding affecting the contact between the strong weather-resistant styrene-acrylic emulsion and the initiator and vapor, and thus avoiding affecting the separation of monomers. When the strong weather-resistant styrene-acrylic emulsion flows in the housing 234, it drives the oblique flow wheel 412 to rotate, thereby driving the rotating shaft 411 and the fixing part 416 to rotate, which in turn drives the hinge frame 413, the hinge part 415 and the scraper 417 to rotate, so as to clean the filter plate 414 and ensure the filtration effect of the filter plate 414.

[0096] The scraper 417 is hinged within the hinge frame 413 via the hinge 415, so that when the diagonal flow impeller 412 drives the scraper 417 to rotate, the scraper 417 rotates at a certain tilt angle under the resistance of the strong weather-resistant styrene-acrylic emulsion. During long-term cleaning, the scraper 417 will wear out. By adjusting the tilt of the scraper 417, it is ensured that the scraper 417 can still contact the top of the filter plate 414 after a certain amount of wear. Compared with the traditional vertically installed scraper 417, it is more convenient for long-term cleaning and use.

[0097] Please see Figure 15 The limiting component 42 includes;

[0098] The limiting member 421 is fixedly installed on both sides of the top of the hinge frame 413. The bottom of the limiting member 421 is fixedly provided with a limiting rod 422 with a bent design. The end of the limiting rod 422 away from the limiting member 421 has a limiting groove. The inner wall of the limiting groove is fixedly fitted with a spring 423. The outer wall of the end of the limiting rod 422 away from the limiting member 421 is fitted with a limiting seat 425. The limiting seat 425 moves along the outer wall of the limiting rod 422. The spring 423 is used to elastically support the limiting seat 425, and the end of the spring 423 away from the limiting rod 422 is fixedly connected to the inner wall of the limiting seat 425.

[0099] Limiting component 42 also includes;

[0100] The first limiting ring 426 is fixedly sleeved on the outer wall of the end of the limiting rod 422 away from the limiting member 421;

[0101] The second limiting ring 424 is fixedly sleeved on the inner wall of the limiting seat 425 near the limiting rod 422, and the second limiting ring 424 is located on the side of the first limiting ring 426 near the limiting member 421, so as to limit the first limiting ring 426 to the second limiting ring 424, thereby limiting the limiting seat 425.

[0102] In practical implementation, the spring 423 provides elastic support to the limiting seat 425, thereby providing elastic support to the scraper 417. This allows the scraper 417 to have a certain buffer space, facilitating actual cleaning. When the scraper 417 squeezes the limiting seat 425 during rotation, causing the limiting seat 425 to compress the spring 423 and become stuck against the limiting rod 422, the rotation angle of the scraper 417 is limited, ensuring that the scraper 417 contacts the top of the filter plate 414, thus avoiding affecting the cleaning effect.

[0103] This invention also provides a method for using a de-monochrome device for the preparation of highly weather-resistant styrene-acrylic emulsions. The method includes the following steps:

[0104] S1: Vacuum is drawn inside the housing 1. Then, the strong weather-resistant styrene-acrylic emulsion is sprayed into the inner cylinder 223 through the first feed pipe 231 of the conveying assembly 23. Steam is sprayed into the inner cylinder 223 through the air inlet pipe 221 and cavity 225 of the heating assembly 22. Since the first nozzle 226 is designed in a ring array, the strong weather-resistant styrene-acrylic emulsion is brought into contact with the steam in a ring spray manner to separate the monomers in the strong weather-resistant styrene-acrylic emulsion and increase the contact area between the strong weather-resistant styrene-acrylic emulsion and the steam, thereby improving the efficiency of monomer separation.

[0105] S2: While separating monomers in the strong weather-resistant styrene-acrylic emulsion using steam, an initiator is sprayed into the inner cylinder 223 through the second feed pipe 217 of the auxiliary component 21, so that the initiator comes into contact with the strong weather-resistant styrene-acrylic emulsion. This facilitates the separation of monomers in the strong weather-resistant styrene-acrylic emulsion by the auxiliary heating component 22. The fourth nozzle 215 for spraying the initiator is designed in a ring array to increase the contact area between the initiator and the strong weather-resistant styrene-acrylic emulsion, so that the initiator and the strong weather-resistant styrene-acrylic emulsion can react fully and improve the monomer separation efficiency. When the strong weather-resistant styrene-acrylic emulsion and the initiator are transported through the conveying component 23 and the auxiliary component 21, they are preheated with steam to avoid the strong weather-resistant styrene-acrylic emulsion coming into contact with steam and experiencing a sudden temperature rise. This prevents the strong weather-resistant styrene-acrylic emulsion from agglomerating due to a sudden temperature rise, thus avoiding affecting the monomer separation effect. Preheating the initiator also improves its polymerization effect on the strong weather-resistant styrene-acrylic emulsion, thereby improving the monomer conversion efficiency and reducing the amount of monomer residue.

[0106] S3: After the weather-resistant styrene-acrylic emulsion comes into contact with steam and initiator, the lower ends of both the inner cylinder 223 and the outer cylinder 222 are designed as inverted frustums, causing the weather-resistant styrene-acrylic emulsion to flow downward along the inner wall of the inner cylinder 223. The steam then comes into contact with the weather-resistant styrene-acrylic emulsion again through the second nozzle 227 of the heating component 22, further separating the monomers in the weather-resistant styrene-acrylic emulsion.

[0107] After the weather-resistant styrene-acrylic emulsion enters the housing 234, the filter plate 414 of the filter mechanism 4 filters out agglomerated impurities in the emulsion, preventing clogging of the third nozzle 236 and thus avoiding affecting the spraying effect of the third nozzle 236. This facilitates the uniform spraying of the weather-resistant styrene-acrylic emulsion by the third nozzle 236, thereby improving the contact effect between the weather-resistant styrene-acrylic emulsion and the steam and initiator, further improving the separation of monomers. When the weather-resistant styrene-acrylic emulsion passes through the oblique flow rotor 412 of the cleaning component 41, the flow of the emulsion drives the scraper 417 to rotate, thereby filtering the filter plate 414 and preventing agglomerated impurities from clogging the filter holes of the filter plate 414, ensuring the filtration effect. The limiting component 42 limits the scraper 417, ensuring that the scraper 417 always contacts the top of the filter plate 414 after relative wear, facilitating long-term use.

[0108] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0109] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0110] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A desiccant device for preparing highly weather-resistant styrene-acrylic emulsions, comprising a housing, characterized in that, It also includes a de-lamination mechanism located at the top of the housing and extending into the housing. The de-lamination mechanism is used to de-lamination the strong weather-resistant styrene-acrylic emulsion. The de-lamination mechanism includes a heating component located at the top of the housing, a conveying component located inside the heating component for conveying the strong weather-resistant styrene-acrylic emulsion, and an auxiliary component located outside the heating component for conveying the initiator. By positioning the heating component between the auxiliary component and the conveying component, the steam conveyed by the heating component preheats the strong weather-resistant styrene-acrylic emulsion and the initiator, while the steam and initiator are brought into contact with the strong weather-resistant styrene-acrylic emulsion by an annular jet. The heating component includes: The outer cylinder is fixedly fitted onto the top of the box and extends into the box; The inner cylinder is fixedly fitted inside the outer cylinder, and a cavity for steam flow is left between the inner and outer cylinders. The lower ends of both the inner and outer cylinders are designed as inverted frustums. The material conveying assembly includes: The housing is fixedly disposed at the lower end of the inner wall of the inner cylinder. The housing is provided with a filtration mechanism for filtering impurities in the highly weather-resistant styrene-acrylic emulsion. The heating assembly also includes; The first air guide box is fixedly installed on the inner wall of the inner cylinder and located at the bottom of the shell. The air inlet of the first air guide box is connected to the cavity. The exhaust end of the first air guide box is fixedly provided with a ring array of nozzles for spraying steam. The material conveying assembly also includes: The drainage box is fixedly installed at the bottom of the shell, and the top of the drainage box is connected to the bottom of the shell. The drainage end of the drainage box is fixedly equipped with a third nozzle for spraying strong weather-resistant styrene-acrylic emulsion.

2. The desiccant device for preparing highly weather-resistant styrene-acrylic emulsions according to claim 1, characterized in that, The bottom and top of the inner and outer cylinders are respectively fixed with a first sealing plate and a second sealing plate for sealing the inner and outer cylinders, allowing steam to flow along a preset channel. An inlet pipe extending out of the outer cylinder is fixed to the inner wall of the outer cylinder. Both the inner and outer cylinders are made of thermally conductive material. The heating assembly also includes: The air guide pipes are fixedly sleeved on the top of the first sealing plate in a ring array and extend to the bottom of the first sealing plate. The bottom of the first sealing plate is fixedly provided with a second air guide box. The exhaust end of the air guide pipes is connected to the air inlet end of the second air guide box. The exhaust end of the second air guide box is fixedly provided with a second nozzle arranged in a ring array for spraying steam. The first nozzle and the second nozzle are both designed to be inclined and are both inclined to the side away from the shell. The first air guide box and the second air guide box are both designed to be ring-shaped, and the inner side of the second air guide box is located on the outer side of the inner cylinder.

3. The desiccant device for preparing highly weather-resistant styrene-acrylic emulsions according to claim 1, characterized in that, The diversion box is used to divert the highly weather-resistant styrene-acrylic emulsion filtered by the filtration mechanism inside the housing to the third nozzle. The material conveying assembly also includes: The first coil is fixedly sleeved on the inner wall of the inner cylinder and is made of heat-conducting material. It is used to conduct the heat of steam to the strong weather-resistant styrene-acrylic emulsion. The drain end of the first coil is fixedly connected to a conveying pipe extending into the shell through a multi-port pipe. The water inlet end of the first coil is fixedly connected to a first feed pipe extending into the outer cylinder. The strong weather-resistant styrene-acrylic emulsion is fed into the shell through the feed pipe, the first coil and the conveying pipe.

4. The desiccant device for preparing highly weather-resistant styrene-acrylic emulsions according to claim 2, characterized in that, The auxiliary components include; An installation sleeve is fixedly fitted onto the top of the housing and extends into the housing. A second coil is fixedly installed on the inner wall of the installation sleeve. The inner wall of the second coil is fixedly connected to the outer wall of the outer cylinder. A second feed pipe extending out of the installation sleeve is fixedly installed at the water inlet end of the second coil. The second coil is made of a heat-conducting material. A third sealing plate is fixedly installed between the installation sleeve and the outer cylinder to seal the installation sleeve and the outer cylinder. The first liquid guide box is fixedly sleeved on the lower end of the outer wall of the outer cylinder, and the water inlet end of the first liquid guide box is connected to the drain end of the second coil. The drain end of the first liquid guide box is fixedly provided with a ring array arrangement that extends into the inner cylinder to form a material guide pipe. The second liquid guide box is fixedly sleeved on the inner wall of the inner cylinder and located at the bottom of the first air guide box. The drain end of the material guide pipe is connected to the water inlet end of the second liquid guide box. The drain end of the second liquid guide box is fixedly provided with a fourth nozzle arranged in a ring array for spraying the initiator. Both the first liquid guide box and the second liquid guide box are designed in a ring shape. The fourth nozzle is designed in an inclined shape and is inclined to the side away from the shell.

5. The desiccant device for preparing highly weather-resistant styrene-acrylic emulsions according to claim 1, characterized in that, The filtration mechanism includes a cleaning assembly, which includes: The filter plate is fixedly sleeved on the inner side wall of the shell. The top of the filter plate is rotatably equipped with a rotating shaft. The top of the rotating shaft is rotatably connected to the top inner wall of the shell. The upper end of the side wall of the rotating shaft is fixedly equipped with a diagonal flow type wheel, which is used to drive the diagonal flow type wheel to rotate when the strong weather-resistant styrene-acrylic emulsion flows downward along the shell, thereby driving the rotating shaft to rotate.

6. The desiccant device for preparing highly weather-resistant styrene-acrylic emulsions according to claim 5, characterized in that, The cleaning assembly also includes; The fixing component is fixedly sleeved on the side wall of the rotating shaft and located at the bottom of the inclined flow impeller. The outer wall of the fixing component is fixedly provided with a hinge frame, and the inner side of the hinge frame is hinged with a hinge member. The bottom of the hinge member is fixedly provided with a scraper for cleaning the filter plate. The top two sides of the hinge frame are provided with limiting components for limiting the scraper, and the limiting components are all located in the opposite direction of the hinge frame rotating with the rotating shaft.

7. The desiccant device for preparing highly weather-resistant styrene-acrylic emulsions according to claim 6, characterized in that, The limiting component includes; The limiting component is fixedly installed on both sides of the top of the hinge frame. The bottom of the limiting component is fixedly provided with a limiting rod with a bent design. A limiting groove is opened at the end of the limiting rod away from the limiting component. A spring is fixedly sleeved on the inner wall of the limiting groove. A limiting seat is sleeved on the outer wall of the end of the limiting rod away from the limiting component. The limiting seat moves along the outer wall of the limiting rod. The spring is used to provide elastic support for the limiting seat, and the end of the spring away from the limiting rod is fixedly connected to the inner wall of the limiting seat.

8. The desiccant device for preparing highly weather-resistant styrene-acrylic emulsions according to claim 7, characterized in that, The limiting component also includes; The first limiting ring is fixedly sleeved on the outer wall of the end of the limiting rod away from the limiting member; The second limiting ring is fixedly sleeved on the inner wall of the limiting seat near the limiting rod, and the second limiting ring is located on the side of the first limiting ring near the limiting member. It is used to limit the first limiting ring against the second limiting ring, so as to limit the limiting seat.

9. The desiccant device for preparing highly weather-resistant styrene-acrylic emulsions according to claim 1, characterized in that, The bottom inner wall of the box is fixedly provided with a discharge pipe extending to the bottom of the box and used to discharge the strong weather-resistant styrene-acrylic emulsion after monomer separation from the box. The inner side wall of the box is fixedly provided with an exhaust pipe extending to the outside of the box and used to discharge steam from the outside of the box.

10. A method for using a desiccant equipment applied to the preparation of highly weather-resistant styrene-acrylic emulsions, characterized in that, The method using the desiccant equipment described in any one of claims 1-9 for the preparation of highly weather-resistant styrene-acrylic emulsions includes the following steps; S1: The strong weather-resistant styrene-acrylic emulsion is sprayed into the inner cylinder through the feeding assembly, and steam is sprayed into the inner cylinder through the heating assembly. The strong weather-resistant styrene-acrylic emulsion is brought into contact with the steam in a ring-shaped spraying manner to separate the monomers in the strong weather-resistant styrene-acrylic emulsion. S2: While separating the monomers in the strong weather-resistant styrene-acrylic emulsion by steam, the initiator is sprayed into the inner cylinder by the auxiliary component, so that the initiator comes into contact with the strong weather-resistant styrene-acrylic emulsion. Then, the auxiliary heating component separates the monomers in the strong weather-resistant styrene-acrylic emulsion. When the strong weather-resistant styrene-acrylic emulsion and the initiator are conveyed by the conveying component and the auxiliary component, they are preheated by steam. S3: After the weather-resistant styrene-acrylic emulsion comes into contact with steam and initiator, the lower ends of both the inner and outer cylinders are designed in an inverted frustum shape, causing the weather-resistant styrene-acrylic emulsion to flow downwards along the inner wall of the inner cylinder. The steam is then brought into contact with the weather-resistant styrene-acrylic emulsion again by the heating component, further separating the monomers in the weather-resistant styrene-acrylic emulsion.

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