Production system for automatic feeding of solvent type acrylic resin

Abstract

The utility model relates to the field of acrylic resin processing, in particular to a production system for automatically feeding solvent type acrylic resin, which comprises a mounting frame, a reaction tank and a driving motor, the mounting frame is connected with a reaction tank; the reaction tank is provided with a driving motor; the device further comprises a nitrogen pipe, a rotating shaft and a spiral plate; the bottom of the reaction tank communicates with a nitrogen pipe; a rotating shaft is fixedly connected to an output shaft of the driving motor, penetrates through the reaction tank and is positioned in the reaction tank; the rotating shaft is fixedly connected with a spiral plate. The driving motor drives the rotating shaft and the spiral plate to anticlockwise rotate from top to bottom by taking the rotating shaft as the center, so that the introduced nitrogen is downwards extruded, the nitrogen only can pass through the fine holes, and meanwhile, the nitrogen passing through the fine holes is accelerated due to the Bernoulli principle, so that the speed of introducing new nitrogen into the reaction tank is accelerated, and the reaction efficiency is improved. The problem that charging needs to be stopped to wait for nitrogen filling due to too fast nitrogen reaction is avoided.

Description

Technical Field

[0001] The utility model relates to the field of acrylic resin processing, in particular to a production system for automatic feeding of solvent-based acrylic resin. Background Art

[0002] In current production, the main polymerization processes for acrylic resins include solution polymerization, suspension polymerization, emulsion polymerization, and bulk polymerization. In bulk polymerization, only monomers, initiators, and molecular weight regulators are added during the polymerization process, with no or a small amount of solvent added. This process offers high production efficiency, low manufacturing costs, no wastewater generation, is environmentally friendly, and produces uniform product color and consistent product quality, making it a gradually developing polymerization process. However, due to the high viscosity and difficult heat and mass transfer during bulk polymerization, monomer conversion is low, placing high demands on reactor equipment and process control procedures.

[0003] Moreover, during the production process of solvent-based acrylic resin, peroxide needs to be added to participate in the reaction, and nitrogen needs to be introduced into the reaction tank to reduce the oxygen content. Then, the material is added from the top hopper. This will result in insufficient contact time between the peroxide and the nitrogen. At the same time, nitrogen is consumed and it takes a long time to fill the nitrogen tank. This makes the peroxide addition process unsafe, poses a safety hazard, and is prone to safety accidents such as explosion or fire. Utility Model Content

[0004] In order to overcome the shortcomings of the problems mentioned in the above background technology, the utility model provides a production system for automatic feeding of solvent-based acrylic resin.

[0005] The technical solution of the utility model is: a production system for automatically adding solvent-based acrylic resin, comprising a mounting frame, a reaction tank and a driving motor; the mounting frame is connected to the reaction tank; the driving motor is installed in the reaction tank; the system also comprises a nitrogen pipe, a rotating shaft, a spiral plate and a scraper; the bottom of the reaction tank is connected to the nitrogen pipe; the output shaft of the driving motor is fixedly connected to the rotating shaft, and the rotating shaft passes through the reaction tank and is located inside the reaction tank; the rotating shaft is fixedly connected to the spiral plate, and the side surface of the spiral plate is in contact with the inner wall of the reaction tank; the bottom of the rotating shaft is fixedly connected to the scraper, and the scraper is in contact with the inner wall of the reaction tank.

[0006] Furthermore, a plurality of fine holes are provided on the spiral plate.

[0007] Furthermore, the scraper strip is arranged obliquely.

[0008] Furthermore, the nitrogen pipe is opened obliquely upward.

[0009] Furthermore, the spiral plate rotates counterclockwise from top to bottom around the rotating shaft.

[0010] Furthermore, it includes limiting strips. Two limiting strips are fixedly connected to the spiral plate to limit the accumulation of peroxide outside the spiral plate.

[0011] The beneficial effects are as follows: 1. The utility model drives the rotating shaft and the spiral plate to rotate counterclockwise from top to bottom with the rotating shaft as the center through the driving motor, thereby squeezing the nitrogen introduced above downward. At this time, the nitrogen can only pass through the fine holes. At the same time, due to the Bernoulli principle, the nitrogen passing through the fine holes is accelerated, thereby speeding up the speed of new nitrogen entering the reaction tank, avoiding the problem of excessive nitrogen reaction causing the need to stop adding and wait for nitrogen to be full;

[0012] 2. The utility model allows part of the peroxide to pass through the pores, so that the peroxide flows downward in an irregular manner, which can more fully react with the nitrogen introduced from the bottom up. At the same time, the nitrogen passing through the pores can prevent the pores from being blocked by peroxide, resulting in incomplete reaction.

[0013] 3. The utility model sets the nitrogen pipe opening obliquely upward. At the same time, because the molecular weight of nitrogen is lower than the average molecular weight of air, nitrogen can rise more easily and fill the interior of the reaction tank more quickly to react with the peroxide.

[0014] 4. The utility model divides the spiral plate into three areas by two limiting strips, so that the peroxide falling on the spiral plate can be confined within the three areas, avoiding the problem of peroxide accumulating on the outside of the spiral plate due to continuous rotation of the spiral plate, which increases the load on the pores outside the spiral plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a structural sectional view of the utility model;

[0017] Figure 3 It is a partial structural sectional view of the utility model.

[0018] In the accompanying drawings: 1-mounting frame, 2-reaction tank, 3-driving motor, 201-nitrogen pipe, 301-rotating shaft, 302-spiral plate, 303-scraping bar, 304-limiting bar, 2a-feed port, 2b-discharge port, 302a-fine hole. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0020] A production system for automatic feeding of solvent-based acrylic resins, such as Figure 1-3As shown, it includes a mounting frame 1, a reaction tank 2 and a driving motor 3; the mounting frame 1 is connected to the reaction tank 2; the reaction tank 2 is equipped with the driving motor 3;

[0021] It also includes a nitrogen pipe 201, a rotating shaft 301, a spiral plate 302 and a scraper 303; the bottom of the reaction tank 2 is connected to the nitrogen pipe 201; the output shaft of the driving motor 3 is fixedly connected to the rotating shaft 301, and the rotating shaft 301 passes through the reaction tank 2 and is located inside it; the rotating shaft 301 is fixedly connected to the spiral plate 302, and the side of the spiral plate 302 is in contact with the inner wall of the reaction tank 2. When the driving motor 3 drives the rotating shaft 301 and the spiral plate 302 to rotate, the side of the spiral plate 302 can scrape off the peroxide remaining on the inner wall of the reaction tank 2, thereby improving resource utilization and avoiding excessive peroxide remaining on the inner wall of the reaction tank 2, which causes waste and subsequent cleaning difficulties; the bottom of the rotating shaft 301 is fixedly connected to the scraper 303, and the scraper 303 is in contact with the inner wall of the reaction tank 2.

[0022] The spiral plate 302 is provided with a plurality of fine holes 302a, which allow the peroxide to pass through and flow downward in an irregular manner.

[0023] The scraper 303 is arranged obliquely so that the peroxide scraped off the inner wall of the reaction tank 2 is guided to the discharge port 2b.

[0024] The nitrogen pipe 201 is opened obliquely upward to make it easier for the nitrogen introduced to rise.

[0025] The spiral plate 302 rotates counterclockwise from top to bottom around the rotating shaft 301, pressing downward the nitrogen gas introduced from above, causing part of the nitrogen gas to pass through the fine hole 302a at an accelerated speed.

[0026] It includes a limiting strip 304; two limiting strips 304 are fixedly connected to the spiral plate 302 to limit the accumulation of peroxide to the outside of the spiral plate.

[0027] The details of this application are as follows:

[0028] First, connect the drive motor 3 to the external power supply and start powering it, connect the nitrogen pipe 201 to the external nitrogen input device, connect the feed port 2a to the peroxide conveying device, and connect the discharge port 2b to the external finished product collection device. Initially, nitrogen is continuously introduced into the reaction tank 2 through the nitrogen pipe 201. It should be noted that the nitrogen pipe 201 is set to open obliquely upward. In this way, since the molecular weight of nitrogen is lower than the average molecular weight of air, nitrogen can rise more easily until it fills the reaction tank 2. Subsequently, the nitrogen is manually fed through the feed port 2a. Peroxide is continuously introduced into the reaction tank 2 through the port 2a, causing the peroxide to fall onto the spiral plate 302. At this time, the driving motor 3 drives the rotating shaft 301 and the spiral plate 302 to rotate counterclockwise from top to bottom around the rotating shaft 301, thereby squeezing the nitrogen gas introduced above downward. At this time, the nitrogen gas can only pass through the fine hole 302a. At the same time, due to the Bernoulli principle, the nitrogen gas passing through the fine hole 302a is accelerated, thereby speeding up the speed of the new nitrogen gas entering the reaction tank 2, avoiding the problem of nitrogen reaction being too fast, which requires stopping the feeding to wait for the nitrogen to be full.

[0029] It should be noted that the peroxide on the spiral plate 302 moves downward due to its counterclockwise rotation, and some of the peroxide can pass through the pores 302a, causing the peroxide to flow downward in an irregular manner, allowing it to react more fully with the nitrogen introduced from the bottom up. At the same time, the nitrogen passing through the pores 302a can prevent the pores 302a from being blocked by the peroxide, which would cause incomplete reaction.

[0030] It should be noted that when peroxide is continuously introduced into the reaction tank 2 through the feed port 2a, the peroxide first falls on the spiral plate 302. At this time, since the spiral plate 302 is in a continuous counterclockwise rotation process, the peroxide is accumulated on the outside of the spiral plate 302 due to the centrifugal force, thereby increasing the peroxide load that the pores 302a on the outside of the spiral plate 302 need to pass through. After a long period of peroxide accumulation, the pores 302a cannot pass through the peroxide and nitrogen normally and are blocked and cannot be used. In this way, two limiting bars 304 are fixed to the spiral plate 302, and the two limiting bars 304 divide the pores 302a on the spiral plate 302 into three areas from the center point to the outside with the rotating shaft 301 as the center, as shown in FIG. Figure 2 As shown, the peroxide falling on the spiral plate 302 can be confined to three areas, avoiding the above-mentioned problem of causing a large load on the outer pores 302a of the spiral plate 302;

[0031] When the peroxide falls from the spiral plate 302 and reacts with the nitrogen, the scraper 303 is driven to rotate by the rotating shaft 301, so that the scraper 303 scrapes off the peroxide remaining on the inner wall of the reaction tank 2. At the same time, the side of the spiral plate 302 contacts the inner wall of the reaction tank 2. When the rotating shaft 301 rotates, the peroxide remaining on the inner wall of the reaction tank 2 can also be scraped off. In this way, resource utilization can be improved, and excessive peroxide remaining on the inner wall of the reaction tank 2, which causes waste and subsequent cleaning difficulties, can be avoided. At the same time, the scraper 303 is set obliquely, so that the peroxide scraped off the inner wall of the reaction tank 2 is guided to the discharge port 2b. Subsequently, the finished product after the reaction is completed flows out from the discharge port 2b and is collected, thereby completing the production of solvent-based acrylic resin.

[0032] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A production system for automatically feeding solvent-based acrylic resin, comprising a mounting frame (1), a reaction tank (2), and a drive motor (3); the mounting frame (1) is connected to the reaction tank (2); the reaction tank (2) is equipped with the drive motor (3); and the system is characterized in that: The apparatus further comprises a nitrogen pipe (201), a rotating shaft (301), a spiral plate (302) and a scraper (303); the bottom of the reaction tank (2) is connected to the nitrogen pipe (201); the output shaft of the driving motor (3) is fixedly connected to the rotating shaft (301), and the rotating shaft (301) passes through the reaction tank (2) and is located inside the reaction tank (2); the rotating shaft (301) is fixedly connected to the spiral plate (302), and the side surface of the spiral plate (302) contacts the inner wall of the reaction tank (2); the bottom of the rotating shaft (301) is fixedly connected to the scraper (303), and the scraper (303) contacts the inner wall of the reaction tank (2).

2. A production system for automatic feeding of solvent-based acrylic resin according to claim 1, characterized in that: A plurality of fine holes (302a) are provided on the spiral plate (302).

3. A production system for automatic feeding of solvent-based acrylic resin according to any one of claims 1-2, characterized in that: The scraper strip (303) is arranged obliquely.

4. The automatic feeding production system for solvent-based acrylic resin according to claim 1, characterized in that: The nitrogen pipe (201) is opened obliquely upward.

5. The automatic feeding production system for solvent-based acrylic resin according to claim 1, characterized in that: The spiral plate (302) rotates counterclockwise from top to bottom with the rotating shaft (301) as the center.

6. The automatic feeding production system for solvent-based acrylic resin according to claim 1, characterized in that: It comprises a limiting strip (304); two limiting strips (304) are fixedly connected to the spiral plate (302).

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