A multi-stage precision screening device for polyacrylic acid sodium raw materials

Abstract

The utility model discloses a kind of polyacrylic acid sodium raw material multistage precision screening filtering devices, it is related to polyacrylic acid sodium screening technical field.The utility model includes base, several vibration springs are installed in base top, several vibration springs top are equipped with base, vibration motor is fixedly installed in base bottom, screening mechanism is installed in base top, the screening mechanism includes three screening barrels, three screening barrels are arranged in order from top to bottom vertically, upper layer and middle layer screening barrel are respectively equipped with upper screening net and lower screening net.The utility model blows the heat generated inside into the inner cavity between each screening barrel and its inner wall air flapper by drying mechanism, so that the temperature of each screening barrel inner cavity is increased, and then ensure that the environment of polyacrylic acid sodium powder screening remains dry, avoid polyacrylic acid sodium powder absorb moisture in air, and cause powder particle mutual adhesion, cause particle caking problem.

Description

Technical Field

[0001] This utility model belongs to the field of sodium polyacrylate screening technology, and specifically relates to a multi-stage fine screening and filtration device for sodium polyacrylate raw materials. Background Technology

[0002] Sodium polyacrylate is a water-soluble polymer with super hygroscopic and water-retaining properties, good water solubility and chemical stability. It also has excellent thickening and suspending abilities. With these core characteristics, it is widely used in many fields. In the food industry, it can be used as a legal food additive to moisturize, thicken and improve meat quality. In the industrial field, it can be used as a flocculant, anti-fouling redeposition agent and other agents to optimize product performance. In agriculture, it can be made into water-retaining materials to improve the soil's water retention capacity.

[0003] Reference publication number: CN205308776U, specifically relating to a screening machine for producing sodium polyacrylate, comprising a bottom plate, a lower plate, a middle plate, an upper plate, and a top cover arranged from bottom to top. The top cover has a feed inlet in the center; the upper plate has an upper discharge outlet at its edge and an upper screen plate on its bottom surface; the middle plate has a middle discharge outlet at its edge and a middle screen plate on its bottom surface; the lower plate has a lower discharge outlet at its edge and a lower screen plate on its bottom surface; and the bottom plate has a bottom discharge outlet at its edge. This screening machine for producing sodium polyacrylate has a multi-layer screening system, screening sodium polyacrylate powder of different particle sizes layer by layer. By screening the sodium polyacrylate powder, products of different qualities are obtained, thereby improving product quality.

[0004] In the aforementioned patent, multiple sieves are used to perform multi-layer sieving of sodium polyacrylate powder. Since sodium polyacrylate is a water-soluble polymer, its powder has a very strong hygroscopic property. In actual sieving operations, sodium polyacrylate powder easily absorbs moisture from the air, causing powder particles to adhere to each other. This not only clogs the sieve and increases equipment wear, but also further causes particle agglomeration. Agglomerated powder cannot pass through the sieve smoothly, directly resulting in uneven particle size of the screened product, making it difficult to meet production standards and downstream processing requirements. At the same time, adhesion and agglomeration will significantly reduce sieving efficiency, prolong the production cycle, and increase production costs.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a multi-stage fine screening and filtration device for sodium polyacrylate raw materials to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a multi-stage fine screening and filtration device for sodium polyacrylate raw materials, comprising a base, several vibration springs mounted on the top of the base, a base mounted on the top of the vibration springs, a vibration motor fixedly mounted on the bottom of the base, a screening mechanism mounted on the top of the base, the screening mechanism comprising three screening barrels, the three screening barrels being arranged longitudinally in the order of upper, middle and lower, the upper and middle screening barrels respectively being equipped with upper screening screens and lower screening screens, three feed pipes being installed on the outer wall of the screening barrels, and air plates being installed on the inner wall of each of the three screening barrels, the air plates having several air outlets; A drying mechanism is installed on the outer wall of the screening barrel, an anti-clogging mechanism is installed in the inner cavity of the base, a top cover is installed on the top of the upper screening barrel, a feed pipe is installed on the top of the top cover, and a main control unit is installed on the outer wall of the base.

[0008] Furthermore, the drying mechanism includes a drying chamber, inside which are installed a plurality of heating wires.

[0009] Furthermore, one end of the drying chamber is connected to three connecting pipes, which are respectively installed on the outer walls of the three screening barrels and connected to the inner cavity of the air plate. A fan is installed at the end of the drying chamber away from the three connecting pipes.

[0010] Furthermore, the anti-blocking mechanism includes a drive motor, which is fixedly installed in the inner cavity of the base, and an output shaft is fixedly installed at one end of the drive motor that extends above the base.

[0011] Furthermore, two connecting blocks are fixedly installed on the outer wall of the output shaft, and the two connecting blocks are respectively located below the upper screening screen and the lower screening screen.

[0012] Furthermore, a number of rotating plates are fixedly installed on the outer wall of the connecting block, and a number of brush bristles are installed on the top of the rotating plates.

[0013] This utility model has the following beneficial effects: This invention uses a drying mechanism to blow the heat generated inside into the cavity between each screening barrel and its inner wall air plate, thereby raising the temperature of the cavity inside each screening barrel. This ensures that the environment for screening sodium polyacrylate powder remains dry, preventing the sodium polyacrylate powder from absorbing moisture from the air, which would cause the powder particles to adhere to each other and lead to particle agglomeration.

[0014] This invention uses an anti-blocking mechanism that rotates to insert corresponding components into the sieve holes of the upper and lower sieves, pushing out sodium polyacrylate particles from the inner wall of the sieve holes. This prevents the accumulation of particles adhering to the inner wall of the sieve holes during the sieving of sodium polyacrylate powder, which would reduce the actual diameter of the sieve holes and ultimately lead to sieve blockage.

[0015] This invention utilizes the vibration generated by the operation of a vibrating motor to cause the upper and lower sieves to vibrate, thereby achieving three-stage stratification of sodium polyacrylate powder and obtaining products with different particle size specifications.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the back of the present invention; Figure 3 This is a partial sectional view of the base of this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a structural diagram of the anti-blocking mechanism of this utility model; Figure 6 This is a partial cross-sectional view of the drying oven of this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 1. Base; 2. Vibration spring; 3. Base; 4. Vibration motor; 5. Screening mechanism; 501. Screening barrel; 502. Upper screening screen; 503. Lower screening screen; 504. Feed pipe; 505. Air vane; 506. Air outlet; 6. Drying mechanism; 601. Drying box; 602. Heating wire; 603. Connecting pipe; 604. Fan; 7. Anti-blocking mechanism; 701. Drive motor; 702. Output shaft; 703. Connecting block; 704. Rotating plate; 705. Brush bristles; 8. Top cover; 9. Feed pipe; 10. Main control. Detailed Implementation

[0020] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0021] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0022] Please see Figures 1-6 As shown, this utility model is a multi-stage fine screening and filtration device for sodium polyacrylate raw materials, including a base 1. Several vibration springs 2 are installed on the top of the base 1. A base 3 is installed on the top of the vibration springs 2. A vibration motor 4 is fixedly installed on the bottom of the base 3. A screening mechanism 5 is installed on the top of the base 3. The screening mechanism 5 includes three screening barrels 501. The three screening barrels 501 are arranged longitudinally in the order of top, middle and bottom. An upper screening screen 502 and a lower screening screen 503 are respectively installed in the upper and middle screening barrels 501. Three feed pipes 504 are also installed on the outer wall of the screening barrels 501. A wind plate 505 is installed on the inner wall of each of the three screening barrels 501. Several air outlets 506 are opened on the wind plate 505. The outer wall of the screening barrel 501 is also equipped with a drying mechanism 6, the inner cavity of the base 3 is equipped with an anti-blocking mechanism 7, the top of the upper screening barrel 501 is equipped with a top cover 8, the top of the top cover 8 is equipped with a feed pipe 9, and the outer wall of the machine base 1 is equipped with a main control 10.

[0023] First, the main controller 10 starts the vibration motor 4 (model YZU-5-2) fixed at the bottom of the base 3. The vibration energy generated by the vibration motor 4 is transmitted to the base 3, and then to the three longitudinally arranged screening barrels 501. At the same time, several vibration springs 2 between the machine base 1 and the base 3 can both buffer and stabilize the vibration energy to prevent the whole device from shaking violently, and also help to enhance the vibration amplitude of the screening mechanism 5 to ensure the screening effect. When sodium polyacrylate powder is fed into the upper screening barrel 501 from the feed pipe 9 through the top cover 8, under the action of vibration, the powder first contacts the upper screening screen 502 in the upper screening barrel 501, which meets the requirements. Fine particles of powder with the required aperture size of the upper sieve 502 pass through the upper sieve 502 and fall into the middle sieve 501, while larger particles are retained on the upper sieve 501. The powder entering the middle sieve 501 continues to contact the lower sieve 503 under vibration, further screening out smaller particles. These particles fall onto the lower sieve 501, and the particles retained in the middle are medium-sized products. During this process, three feed pipes 504 installed on the outer wall of each sieve 501 collect powders of different sizes retained in each sieve 501, thus achieving three-stage stratified sieving of sodium polyacrylate powder to obtain products with different particle size specifications. While the sodium polyacrylate powder is being sieved, the main controller 10 starts the drying mechanism 6. Heat is generated inside the drying mechanism 6, and then the drying mechanism 6 blows the heat generated inside into the cavity between each sieve barrel 501 and its inner wall air plate 505. Then, the heat is blown into the cavity of the sieve barrel 501 through several air outlets 506 on the air plate 505, which raises the temperature of the cavity of each sieve barrel 501. This ensures that the environment for sieving the sodium polyacrylate powder is kept dry, and prevents the sodium polyacrylate powder from absorbing moisture from the air, which would cause the powder particles to stick together and cause particle agglomeration. At the same time, the main controller 10 controls the anti-blocking mechanism 7 to operate. During the rotation process, the anti-blocking mechanism 7 can insert its corresponding components into the sieve holes of the upper sieve screen 502 and the lower sieve screen 503 to push out the sodium polyacrylate powder particles attached to the inner wall of the sieve holes. This prevents the particles attached to the inner wall of the sieve holes from gradually accumulating and reducing the actual diameter of the sieve holes during the sieving of sodium polyacrylate powder, which would eventually lead to sieve blockage.

[0024] In one embodiment, the drying mechanism 6 described above includes a drying chamber 601, in which a plurality of heating wires 602 are installed.

[0025] One end of the drying chamber 601 is connected to three connecting pipes 603. The three connecting pipes 603 are respectively installed on the outer wall of the three screening barrels 501 and communicate with the inner cavity of the air plate 505. A fan 604 is installed at the end of the drying chamber 601 away from the three connecting pipes 603.

[0026] The main controller 10 controls the start of several heating wires 602 and a fan 604. The heating wires 602 generate heat, and the fan 604 blows outside air into the inner cavity of the drying chamber 601. The heating wires 602 heat the air blown into the inner cavity of the drying chamber 601. The heated air is discharged through three connecting pipes 603 into the inner cavity between each screening barrel 501 and its respective inner wall air plate 505. Then, it is blown into the inner cavity of the screening barrel 501 from several air outlets 506 on the air plate 505. This raises the temperature of the inner cavity of each screening barrel 501, thereby ensuring that the environment for screening sodium polyacrylate powder remains dry.

[0027] In one embodiment, the anti-blocking mechanism 7 includes a drive motor 701, which is fixedly installed in the inner cavity of the base 3. An output shaft 702 is fixedly installed at one end of the drive motor 701 that extends above the base 3.

[0028] Two connecting blocks 703 are fixedly installed on the outer wall of the output shaft 702, and the two connecting blocks 703 are respectively located below the upper screening screen 502 and the lower screening screen 503.

[0029] A plurality of rotating plates 704 are fixedly installed on the outer wall of the connecting block 703, and a plurality of bristles 705 are installed on the top of the rotating plates 704.

[0030] The main controller 10 starts the drive motor 701 (model of drive motor 701: YS7124). The output end of drive motor 701 drives the output shaft 702 to rotate, which in turn causes the two connecting blocks 703 fixed on the outer wall of the output shaft 702 to rotate around the output shaft 702 as the rotation center. Since the two connecting blocks 703 are respectively located below the upper screen 502 and the lower screen 503, their rotation will drive several rotating plates 704 connected to them to rotate synchronously. The rotating plates 704 then drive several brush bristles 705 on the top (brush bristles 705 are made of nylon bristles, which have sufficient toughness to withstand the pushing and cleaning of particles in the screen holes) to rotate. These rotating brush bristles 705 will insert into the screen holes of the upper screen 502 and the lower screen 503, pushing out the sodium polyacrylate particles attached to the inner wall of the screen holes. It should be noted that the drive motor 701 drives the brush bristles 705 at a relatively slow speed to ensure that each brush bristle 705 can be inserted into the screen hole.

[0031] Working principle: The main controller 10 starts the vibration motor 4, which transmits the vibration energy to three longitudinally arranged screening drums 501 through the base 3. Several vibration springs 2 buffer and stabilize the vibration energy to ensure the screening effect. Sodium polyacrylate powder is fed into the upper screening drum 501 through the feed pipe 9 and the top cover 8. Under the action of vibration, the powder comes into contact with the upper screening screen 502. Fine particles that meet the aperture requirements of the upper screening screen 502 pass through the upper screening screen 502 and fall into the middle screening drum. In the upper screening bin 501, larger coarse particles are retained on the upper screening bin 501. The powder entering the middle screening bin 501 comes into contact with the lower screening screen 503 under vibration, further screening out smaller particles. These particles fall onto the lower screening bin 501. The particles retained in the middle layer are medium-sized products. The three feed pipes 504 respectively collect the powder of different particle sizes retained in each screening bin 501, ultimately achieving three-stage stratified screening of sodium polyacrylate powder. While the sodium polyacrylate powder is being sieved, the main controller 10 controls the start of several heating wires 602 and a fan 604. The fan 604 blows outside air into the inner cavity of the drying chamber 601. The heating wires 602 heat the air blown into the inner cavity of the drying chamber 601. The heated air is then discharged through three connecting pipes 603 into the inner cavity between each sieve barrel 501 and its respective inner wall air plate 505. The air is then blown into the inner cavity of the sieve barrel 501 from several air outlets 506 on the air plate 505. This raises the temperature of the inner cavity of each sieve barrel 501, thereby ensuring that the environment for sieving the sodium polyacrylate powder remains dry. The main controller 10 starts the drive motor 701, which drives the output shaft 702 to rotate. The output shaft 702 drives the two connecting blocks 703 to rotate. The connecting blocks 703 drive the connected rotating plates 704 to rotate. The rotating plates 704 then drive the top brushes 705 to rotate. These rotating brushes 705 insert into the sieve holes of the upper sieve 502 and the lower sieve 503, pushing out the particles that are attached to the inner wall of the sieve holes by sodium polyacrylate powder.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-stage fine screening and filtration device for sodium polyacrylate raw materials, comprising a base (1), wherein a plurality of vibration springs (2) are mounted on the top of the base (1), a base (3) is mounted on the top of the plurality of vibration springs (2), and a vibration motor (4) is fixedly mounted on the bottom of the base (3), characterized in that: The base (3) is equipped with a screening mechanism (5) on top. The screening mechanism (5) includes three screening barrels (501). The three screening barrels (501) are arranged longitudinally in the order of top, middle and bottom. The upper screening screen (502) and the lower screening screen (503) are respectively installed in the upper and middle screening barrels (501). The outer wall of the screening barrel (501) is also equipped with three feed pipes (504). The inner wall of the three screening barrels (501) is equipped with a wind plate (505). The wind plate (505) has several air outlets (506). The outer wall of the screening barrel (501) is also equipped with a drying mechanism (6), the inner cavity of the base (3) is equipped with an anti-blocking mechanism (7), the top of the upper screening barrel (501) is equipped with a top cover (8), the top of the top cover (8) is equipped with a feed pipe (9), and the outer wall of the machine base (1) is equipped with a main control (10).

2. The multi-stage fine screening and filtration device for sodium polyacrylate raw materials according to claim 1, characterized in that, The drying mechanism (6) includes a drying chamber (601) and a plurality of heating wires (602) are installed inside the drying chamber (601).

3. The multi-stage fine screening and filtration device for sodium polyacrylate raw materials according to claim 2, characterized in that, The drying chamber (601) is connected to three connecting pipes (603) at one end. The three connecting pipes (603) are respectively installed on the outer wall of the three screening barrels (501) and connected to the inner cavity of the air plate (505). A fan (604) is installed at the end of the drying chamber (601) away from the three connecting pipes (603).

4. The multi-stage fine screening and filtration device for sodium polyacrylate raw materials according to claim 1, characterized in that, The anti-blocking mechanism (7) includes a drive motor (701), which is fixedly installed in the inner cavity of the base (3). The output end of the drive motor (701) extends to one end above the base (3) and is fixedly installed with an output shaft (702).

5. The multi-stage fine screening and filtration device for sodium polyacrylate raw materials according to claim 4, characterized in that, Two connecting blocks (703) are fixedly installed on the outer wall of the output shaft (702), and the two connecting blocks (703) are located below the upper screening screen (502) and the lower screening screen (503), respectively.

6. The multi-stage fine screening and filtration device for sodium polyacrylate raw materials according to claim 5, characterized in that, The outer wall of the connecting block (703) is fixedly installed with several rotating plates (704), and the top of the rotating plates (704) is equipped with several bristles (705).

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