Styrene-acrylic emulsion emulsification reaction device

Abstract

The utility model discloses a styrene-acrylic emulsion emulsification reaction device and relates to the technical field of styrene-acrylic emulsion. The device comprises an emulsifying tank and a sealing top cover, wherein a filter screen is clamped and fixed in the emulsifying tank; the sealing top cover is clamped and fixed at the top of the emulsifying tank; a high-pressure pump penetrates through and is clamped at the top of the sealing top cover, a processing pipe penetrates through and is clamped at one side of the sealing top cover, a water inlet pipe penetrates through and is clamped on the peripheral surface of the processing pipe, and a return pipe penetrates through and is welded at the other end of the processing pipe. The emulsifying tank and the sealing top cover are arranged, so that the problems that when the emulsifying reaction device processes styrene-acrylic emulsion, raw materials rotating at a high speed are difficult to mix with water quickly, a large amount of air is mixed into liquid in the high-speed stirring process, the reaction efficiency is influenced, and impurities are likely to react and separate out in the reaction process are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of styrene-acrylic emulsion, and particularly relates to an emulsifying reaction device for styrene-acrylic emulsion. Background Technique

[0002] Styrene-acrylic emulsion is obtained by emulsion copolymerization of styrene and acrylate monomers. Styrene-acrylic emulsion is a system that has been studied more in emulsion polymerization and is also one of the top ten non-crosslinked emulsions with important industrial application value in the world today. It has good adhesion, a transparent film, and good water, oil, heat, and aging resistance. It is mainly used as architectural coatings, metal surface latex coatings, floor coatings, paper adhesives, adhesives, etc. It can also be used as a paper adhesive in combination with adhesives such as starch, polyvinyl alcohol, and sodium carboxymethyl cellulose. During the production and processing of styrene-acrylic emulsion, the pre-treated mixed raw materials need to be poured into the emulsifying reaction device, and through high-speed stirring and adding a certain amount of water, the mixed raw materials are formed into a stable emulsion for subsequent processing. However, it still has the following disadvantages in actual use:

[0003] 1. The utility model with the publication number CN202263591U discloses a high-speed emulsifying reaction device, including a reaction tank connected to a high-shear reaction device through an overflow pipe, and an emulsifying pump arranged between the high-shear reaction device and the reaction tank and connected through a circulation pipe. When the emulsifying reaction device performs high-speed stirring on the styrene-acrylic emulsion raw materials, a certain amount of water needs to be added to the mixed raw materials. However, the fast-moving mixed raw materials are often difficult to be quickly and evenly mixed with water, reducing the processing efficiency;

[0004] 2. When stirring the mixed raw materials, in order to ensure the high-speed rotation and mixing of the liquid, a certain space often needs to be reserved in the reaction container. However, the existence of space will cause a large amount of air to enter the mixed liquid during high-speed stirring, affecting the emulsifying reaction efficiency. Moreover, during the emulsifying reaction process, impurities contained in the raw materials may react and precipitate, directly affecting the quality of the finished product when the emulsion is further processed. And filtering the emulsion before discharging reduces the processing efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide an emulsifying reaction device for styrene-acrylic emulsion, which solves the problems that when the emulsifying reaction device processes styrene-acrylic emulsion, the fast-rotating raw materials are difficult to be quickly mixed with water, a large amount of air will be mixed into the liquid during high-speed stirring, affecting the reaction efficiency, and impurities may react and precipitate during the reaction process.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model relates to an emulsification reaction device for styrene-acrylic emulsion, which comprises an emulsification tank and a sealed top cover. A filter screen is clamped and fixed inside the emulsification tank. The top of the emulsification tank is clamped and fixed with a sealed top cover. A high-pressure pump is clamped and fixed through the top of the sealed top cover. A treatment pipe is clamped and fixed through one side of the sealed top cover. A water inlet pipe is clamped and fixed through the outer peripheral surface of the treatment pipe. The other end of the treatment pipe is welded through a return pipe;

[0008] When the emulsion in the emulsification tank is stirred at a high speed, the filter screen can continuously defoam and cut the emulsion, improving the processing efficiency. At the same time, the filter screen can separate the mixed liquid and the solid particles precipitated by the reaction, so that the impurities are automatically retained in the emulsification tank when the emulsion is discharged. The high-pressure pump can extract the air in the emulsification tank to avoid a large amount of air mixing with the mixed liquid and affecting the emulsification reaction efficiency. When the mixed liquid is stirred at a high speed, the mixed liquid enters the return pipe under the action of centrifugal force and moves to the treatment pipe through the return pipe with a smaller radius. Water mist is sprayed on the mixed liquid passing through the treatment pipe through the water inlet pipe and the spray pipe, so that the mixed liquid with a relatively slow flow rate can be quickly and fully mixed with water. Then, the mixed liquid and water return to the emulsification tank through the other end of the treatment pipe for high-speed stirring again. When the emulsion needs to be discharged, the raw materials can quickly move to the return pipe under the action of centrifugal force, and the liquid is discharged under the action of gravity. The impurities generated by the reaction are retained inside the filter screen, which does not affect the discharge speed of the emulsion and ensures the quality of the finished product.

[0009] Further, a feed pipe is clamped and fixed through the top of the outer peripheral surface of the emulsification tank. One end of the feed pipe is inserted through one side of the filter screen. A first connecting pipe is welded through the bottom of the outer peripheral surface of the emulsification tank;

[0010] The mixed raw materials can be directly poured into the inside of the filter screen after pretreatment, avoiding possible impurities during the pretreatment process that cannot be filtered through the filter screen. When the mixed liquid is stirred at a high speed, the mixed liquid can enter the return pipe through the first connecting pipe under the action of centrifugal force for reflux and water addition treatment.

[0011] Further, a slag discharge pipe is welded through the center of the bottom of the emulsification tank. The slag discharge pipe is located inside the filter screen. A support frame is clamped and fixed at the bottom edge of the emulsification tank;

[0012] When the emulsion in the emulsification tank is stirred at a high speed, the filter screen can continuously defoam and cut the emulsion, improving the processing efficiency. After the styrene-acrylic emulsion is emulsified, when the emulsion moves at a high speed, the emulsion is filtered and discharged through the filter screen under the action of centrifugal force. The solid impurities precipitated during the reaction are retained in the emulsification tank and are discharged through the opened slag discharge pipe after all the emulsion is discharged, which does not affect the discharge speed of the emulsion and ensures the quality of the finished product.

[0013] Furthermore, a stirring motor is fixedly clamped at the center of the top of the sealed top cover. A stirring rod is rotatably clamped at the bottom of the stirring motor. Stirring blades are fixedly welded to the outer peripheral surface of the stirring rod. A limiting and guiding frame is fixedly clamped inside the sealed top cover. The stirring rod penetrates and is inserted into the top of the limiting and guiding frame. The stirring blades are located on the bottom side of the limiting and guiding frame. The stirring blades are attached to the inner wall of the filter screen. An exhaust pipe penetrates and is clamped on the outer peripheral surface of the high-pressure pump;

[0014] The stirring motor drives the stirring blades to rotate to stir the raw materials at a high speed. The limiting and guiding frame limits the raw materials in the emulsifying tank to prevent the raw materials from entering the sealed top cover. The limiting and guiding frame can guide the mixed liquid after adding water, so that the mixed liquid flows into the filter screen. When the raw materials are stirred at a high speed, the filter screen can continuously defoam and cut the emulsion, improving the processing efficiency. Moreover, the high-pressure pump can pump air out of the emulsifying tank to avoid the influence of the mixture of air and raw materials on the reaction efficiency.

[0015] Furthermore, a spray pipe is penetrated and clamped at one end of the water inlet pipe. The spray pipe is located inside the treatment pipe. A flow monitoring component is penetrated and clamped at the top of the outer peripheral surface of the return pipe;

[0016] When the mixed liquid is stirred at a high speed, the mixed liquid enters the return pipe under the action of centrifugal force and moves upward. The flow monitoring component monitors the flow rate of the mixed liquid entering the treatment pipe through the return pipe, and controls the appropriate amount of water to spray water mist into the treatment pipe through the water inlet pipe and the spray pipe according to the flow rate, so that the water and the mixed liquid with a relatively slow flow rate can be quickly and fully mixed, and then the mixed liquid and water flow back into the emulsifying tank through the other end of the treatment pipe to be stirred at a high speed again, improving the reaction efficiency.

[0017] Furthermore, a second connecting pipe and a sewage pipe are penetrated and welded at the bottom of the outer peripheral surface of the return pipe. One end of the second connecting pipe is penetrated and clamped at one end of the first connecting pipe. An outlet pipe is penetrated and clamped at the bottom of the return pipe;

[0018] After the processing is completed, the outlet pipe is opened, and the emulsion quickly enters the return pipe through the first connecting pipe and the second connecting pipe under the action of centrifugal force, and is discharged through the outlet pipe under the action of gravity. When the device is cleaned after the emulsion is discharged, the cleaning liquid can also quickly enter the return pipe under the action of centrifugal force and is discharged through the sewage pipe. The structure is simple and the operation is convenient.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model solves the problem that when the emulsifying reaction device stirs the styrene-acrylic emulsion raw material at a high speed, a certain amount of water needs to be added to the mixed raw material, but the mixed raw material moving at a high speed is often difficult to be quickly and evenly mixed with water, reducing the processing efficiency. When the mixed raw material is stirred at a high speed, the mixed liquid enters the reflux pipe under the action of centrifugal force and moves upward along the reflux pipe. According to the flow control of the mixed liquid in the treatment pipe, an appropriate amount of water is sprayed into the treatment pipe through the water inlet pipe and the spray pipe in the form of water mist, so that the water and the mixed liquid with a relatively slow flow rate can be quickly and fully mixed. Then, the mixed liquid and water flow back into the emulsifying tank through the other end of the treatment pipe and are stirred at a high speed again, improving the reaction efficiency.

[0021] 2. The utility model solves the problem that when stirring the mixed raw material, in order to ensure the high-speed rotation and mixing of the liquid, a certain space often needs to be reserved in the reaction vessel, but the existence of the space will cause a large amount of air to enter the mixed liquid during the high-speed stirring process, affecting the emulsifying reaction efficiency. And during the emulsifying reaction process, impurities contained in the raw material may react and precipitate, directly affecting the quality of the finished product when the emulsion is processed in the next step, while filtering the emulsion before discharging reduces the processing efficiency. When the raw material is stirred at a high speed, the filter screen can continuously defoam and cut the emulsion, improving the processing efficiency. And the high-pressure pump can pump air out of the emulsifying tank to avoid the mixed liquid of air and raw material affecting the reaction efficiency. After the processing is completed, the emulsion is discharged through the reflux pipe and the discharge pipe, and the solid impurities precipitated during the reaction process are retained in the emulsifying tank and are discharged through the slag discharge pipe after all the emulsion is discharged, which does not affect the discharge speed of the emulsion and ensures the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the structural effect diagram of the utility model;

[0023] Figure 2 is the structural diagram of the emulsifying tank of the utility model;

[0024] Figure 3 is the side view of the emulsifying tank of the utility model;

[0025] Figure 4 is the structural diagram of the sealed top cover of the utility model;

[0026] Figure 5 is the cross-sectional view of the sealed top cover of the utility model.

[0027] Reference numerals:

[0028] 1. Emulsifying tank; 101. Feed pipe; 102. Filter screen; 103. First connecting pipe; 104. Slag discharge pipe; 105. Support frame; 2. Sealed top cover; 201. Return pipe; 202. High-pressure pump; 203. Stirring motor; 204. Water inlet pipe; 205. Treatment pipe; 206. Spray pipe; 207. Flow monitoring component; 208. Discharge pipe; 209. Sewage discharge pipe; 210. Second connecting pipe; 211. Exhaust pipe; 212. Limit diversion frame; 213. Stirring rod; 214. Stirring blade. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] Please refer to Figures 1-5 As shown, the present invention is a styrene-acrylic emulsion emulsification reaction device, including an emulsifying tank 1 and a sealed top cover 2. A filter screen 102 is clamped and fixed inside the emulsifying tank 1, and a sealed top cover 2 is clamped and fixed on the top of the emulsifying tank 1. A high-pressure pump 202 is clamped and penetrated through the top of the sealed top cover 2, and a treatment pipe 205 is clamped and penetrated through one side of the sealed top cover 2. A water inlet pipe 204 is clamped and penetrated through the outer peripheral surface of the treatment pipe 205, and the other end of the treatment pipe 205 is penetrated and welded with a return pipe 201;

[0031] Pour a large amount of mixed liquid into the emulsifying tank 1 and start the stirring motor 203 to drive the stirring blade 214 to rotate, and stir the raw materials at a high speed. Under the action of centrifugal force, the raw materials quickly pass through the filter screen 102 for defoaming and cutting. At the same time, the high-pressure pump 202 evacuates the air in the emulsifying tank 1, quickly extracting the air in the emulsifying tank 1 to avoid mixing the mixed liquid with a large amount of air. The mixed liquid enters the return pipe 201 under the action of centrifugal force and moves upward along the return pipe 201. The flow monitoring component 207 monitors the flow rate of the mixed liquid entering the treatment pipe 205 and controls the corresponding amount of water to be sprayed into the treatment pipe 205 through the water inlet pipe 204 and the spray pipe 206, so that the water and the mixed liquid are fully mixed. The mixed liquid containing water flows back into the emulsifying tank 1 under the action of gravity for high-speed stirring again. When the emulsification reaction of the raw materials is completed, open the discharge pipe 208 so that the emulsion entering the return pipe 201 is discharged under the action of gravity, and the impurities generated by the reaction remain in the filter screen 102. After all the emulsion is discharged, open the slag discharge pipe 104 to discharge the impurities.

[0032] Among them, as Figures 1-3 shown, a feed pipe 101 is clamped and penetrated through the top of the outer peripheral surface of the emulsifying tank 1, one end of the feed pipe 101 is penetrated and inserted into one side of the filter screen 102, a first connecting pipe 103 is penetrated and welded at the bottom of the outer peripheral surface of the emulsifying tank 1, a slag discharge pipe 104 is penetrated and welded at the center of the bottom of the emulsifying tank 1, the slag discharge pipe 104 is located inside the filter screen 102, and a support frame 105 is clamped and fixed at the edge of the bottom of the emulsifying tank 1;

[0033] The mixed raw materials are poured into the filter screen 102 through the feed pipe 101. When the raw materials are stirred at high speed, the materials quickly pass through the filter screen 102 under the action of centrifugal force for defoaming and cutting, and enter the reflux pipe 201 through the first connecting pipe 103 for reflux and water addition. When the reaction is completed and discharging, the impurities generated by the reaction are retained in the filter screen 102, and the slag discharge pipe 104 is opened to discharge the impurities after all the emulsion is discharged.

[0034] Among them, as Figure 1 , 4 , as shown in 5, a stirring motor 203 is fixedly clamped at the center of the top of the sealed top cover 2. A stirring rod 213 is rotatably clamped at the bottom of the stirring motor 203. Stirring blades 214 are fixedly welded to the outer peripheral surface of the stirring rod 213. A limiting diversion frame 212 is fixedly clamped inside the sealed top cover 2. The stirring rod 213 is inserted through the top of the limiting diversion frame 212. The stirring blades 214 are located on the bottom side of the limiting diversion frame 212. The stirring blades 214 are attached to the inner wall of the filter screen 102. An exhaust pipe 211 is penetrated and clamped on the outer peripheral surface of the high-pressure pump 202. One end of the water inlet pipe 204 is penetrated and clamped with a spray pipe 206. The spray pipe 206 is located inside the treatment pipe 205. A flow monitoring component 207 is penetrated and clamped on the top of the outer peripheral surface of the reflux pipe 201. A second connecting pipe 210 and a sewage discharge pipe 209 are penetrated and welded on the bottom of the outer peripheral surface of the reflux pipe 201. One end of the second connecting pipe 210 is penetrated and clamped at one end of the first connecting pipe 103. A discharge pipe 208 is penetrated and clamped at the bottom of the reflux pipe 201;

[0035] The stirring motor 203 drives the stirring rod 213 and the stirring blades 214 to rotate, stir the raw materials at high speed, so that the raw materials enter the reflux pipe 201 under the action of centrifugal force and move upward along the reflux pipe 201. The flow monitoring component 207 monitors the flow rate of the mixed liquid entering the treatment pipe 205, and pumps the corresponding amount of water into the water inlet pipe 204 according to the flow rate, so that the water is sprayed through the spray pipe 206 into the treatment pipe 205 and fully mixed with the mixed liquid. The mixed liquid containing water enters the sealed top cover 2 under the action of gravity and is guided by the limiting diversion frame 212 and then flows back into the emulsifying tank 1. After the processing is completed, the discharge pipe 208 is opened so that the emulsion entering the reflux pipe 201 is discharged under the action of gravity.

[0036] The specific working principle of the present utility model is as follows: The pre-treated styrene-acrylic emulsion mixed raw materials are poured into the filter screen 102 through the feed pipe 101. The stirring motor 203 drives the stirring rod 213 and the stirring blade 214 to rotate, and the raw materials are stirred at a high speed, so that the raw materials quickly pass through the filter screen 102 under the action of centrifugal force for defoaming and cutting, and enter the reflux pipe 201 through the first connecting pipe 103 and the second connecting pipe 210, and move upward along the reflux pipe 201. The flow monitoring component 207 monitors the flow rate of the mixed liquid entering the treatment pipe 205, and pumps the corresponding amount of water into the water inlet pipe 204 according to the flow rate, so that the water is sprayed through the spray pipe 206 into the treatment pipe 205 and fully mixed with the mixed liquid. The mixed liquid containing water enters the sealed top cover 2 under the action of gravity and is guided by the limit guide frame 212 and flows back to the emulsifying tank 1. When the reaction is completed and discharging, the discharge pipe 208 is opened to discharge the emulsion entering the reflux pipe 201 under the action of gravity, while the impurities generated by the reaction remain in the filter screen 102. After all the emulsion is discharged, the slag discharge pipe 104 is opened to discharge the impurities. When cleaning is required, the device is cleaned by the cleaning liquid rotating at a high speed, and after cleaning, the sewage discharge pipe 209 is opened to discharge the sewage.

[0037] The above are only the preferred embodiments of the present utility model and do not limit the present utility model. Any modification of the technical solutions recorded in the foregoing embodiments, any equivalent replacement of some technical features, and any modification, equivalent replacement, and improvement made are all within the protection scope of the present utility model.

Claims

1. An emulsification reaction device for styrene-acrylic emulsion, comprising an emulsification tank (1) and a sealed top cover (2), characterized in that: A filter screen (102) is snap - fixed inside the emulsifying tank (1). A sealing top cover (2) is snap - fixed on the top of the emulsifying tank (1). A high - pressure pump (202) is snap - fixed through the top of the sealing top cover (2). A processing pipe (205) is snap - fixed through one side of the sealing top cover (2). A water inlet pipe (204) is snap - fixed through the outer peripheral surface of the processing pipe (205). The other end of the processing pipe (205) is welded through with a return pipe (201).

2. The emulsification reaction device for styrene-acrylic emulsion according to claim 1, characterized in that: A feed pipe (101) is snap - fixed through the top of the outer peripheral surface of the emulsifying tank (1). One end of the feed pipe (101) is inserted through and connected to one side of the filter screen (102). A first connecting pipe (103) is welded through the bottom of the outer peripheral surface of the emulsifying tank (1).

3. The emulsification reaction device for styrene-acrylic emulsion according to claim 1, characterized in that: A slag discharge pipe (104) is welded through the center of the bottom of the emulsifying tank (1). The slag discharge pipe (104) is located inside the filter screen (102). A support frame (105) is snap - fixed on the bottom edge of the emulsifying tank (1).

4. The emulsifying reaction device for styrene-acrylic emulsion according to claim 1, wherein: A stirring motor (203) is snap - fixed at the center of the top of the sealing top cover (2). A stirring rod (213) is rotatably snap - fixed at the bottom of the stirring motor (203). Stirring blades (214) are welded and fixed on the outer peripheral surface of the stirring rod (213). A limiting flow - guiding frame (212) is snap - fixed inside the sealing top cover (2). The stirring rod (213) is inserted through the top of the limiting flow - guiding frame (212). The stirring blades (214) are located on the bottom side of the limiting flow - guiding frame (212). The stirring blades (214) are attached to the inner wall of the filter screen (102). An exhaust pipe (211) is snap - fixed through the outer peripheral surface of the high - pressure pump (202).

5. A styrene-acrylic emulsion emulsification reaction device according to claim 1, characterized in that: One end of the water inlet pipe (204) is snap - fixed with a spray pipe (206). The spray pipe (206) is located inside the processing pipe (205). A flow - monitoring component (207) is snap - fixed through the top of the outer peripheral surface of the return pipe (201).

6. The styrene-acrylic emulsion emulsification reaction device according to claim 2, wherein: A second connecting pipe (210) and a sewage discharge pipe (209) are welded through the bottom of the outer peripheral surface of the return pipe (201). One end of the second connecting pipe (210) is snap - fixed through one end of the first connecting pipe (103). An outlet pipe (208) is snap - fixed through the bottom of the return pipe (201).

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