Polyacrylamide low-temperature pulverizing device
By designing an air-guiding structure, the polyacrylamide cryogenic pulverizer with synchronous rotation of the fan blades and blade shaft solves the problems of low efficiency and uneven finished products caused by frictional heat during the pulverization process, achieving a high-efficiency and low-energy-consumption pulverization effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RIZHAO DAZHU CHEMICAL CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-23
Smart Images

Figure CN224391630U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulverizing equipment, and in particular to a low-temperature pulverizing equipment for polyacrylamide. Background Technology
[0002] Polyacrylamide pulverizing equipment is a device for pulverizing large polyacrylamide materials. It can pulverize polyacrylamide into small particles to meet the needs of subsequent use and is widely used in polyacrylamide production and processing.
[0003] However, during the crushing and processing of heat-sensitive polymer materials such as polyacrylamide, the materials are easily softened and melted by the frictional heat generated by the high-speed rotation of the crushing blades, which then causes them to stick together and clump. This not only leads to low crushing efficiency and uneven particle size distribution in the finished product, seriously affecting product quality, but also causes production interruptions due to frequent shutdowns to clean the clumps, reducing overall production efficiency. Existing technologies often use additional air cooling units to force-cool the crushing chamber. However, independent air cooling systems increase the configuration of the drive motor and the overall energy consumption of the equipment. Furthermore, the complex air supply pipeline layout not only occupies valuable equipment space but also increases the purchase and maintenance costs of the entire machine. At the same time, the airflow introduction point and distribution uniformity of traditional cooling methods are often poor, making it difficult to effectively cover the instantaneous high-temperature zone in the crushing chamber. Utility Model Content
[0004] The main objective of this invention is to provide a low-temperature pulverization device for polyacrylamide, which can effectively solve the technical problems mentioned in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A low-temperature pulverizing device for polyacrylamide includes a mounting plate, a drive motor, a blade shaft, and pulverizing blades. The drive motor is fixedly mounted at the rear end of the mounting plate, the blade shaft is movably mounted at the front end of the mounting plate, and a plurality of pulverizing blades are fixedly mounted on the outside of the blade shaft. A pulverizing cover is fixedly mounted at the front end of the mounting plate, outside the blade shaft and pulverizing blades. An installation sleeve is fixedly mounted at the bottom outer side of the pulverizing cover, and a rotary discharge pipe is movably mounted at the lower end of the installation sleeve. An air guiding structure is fixedly mounted at the front end of the pulverizing cover.
[0007] As a further embodiment of this utility model, the rear end of the mounting plate is fixedly mounted and supported on the outside of the drive motor, and the rotating shaft of the drive motor passes through the mounting plate and is fixedly connected to the blade shaft.
[0008] As a further embodiment of this utility model, a feeding box is fixedly installed on the top outer side of the crushing hood, and the bottom of the crushing hood is connected to the rotating discharge pipe through an installation sleeve.
[0009] As a further embodiment of this utility model, the air guiding structure includes an air guiding pipe, an isolation net, a fan box, a fan shaft, fan blades, and a synchronous shaft. The air guiding pipe is fixedly installed at the front end of the crushing hood, the isolation net is fixedly installed inside the rear of the air guiding pipe, the fan box is fixedly installed at the front end of the air guiding pipe, the fan shaft is movably installed inside the fan box, multiple fan blades are fixedly installed outside the fan shaft, and the synchronous shaft is fixedly installed at the rear end of the fan shaft.
[0010] As a further embodiment of this utility model, the fan blades are located inside the fan box, and the air-blowing end of the fan blades faces the air-guiding pipe.
[0011] As a further embodiment of this utility model, the air guide pipe is connected to the interior of the crushing hood, the fan shaft is inserted into the air guide pipe and passes through the isolation net, and the rear end of the fan shaft is fixedly connected to the front end of the blade shaft.
[0012] Compared with the prior art, this utility model has the following beneficial effects: Through the design of the air guiding structure, the fan blades rotate synchronously with the blade shaft, forcibly blowing external air into the crushing hood through the air guiding pipe. This airflow not only significantly reduces the frictional heat during the crushing process, preventing polyacrylamide from softening or caking due to high temperature, but also fully disperses the material through airflow disturbance, improving the crushing uniformity. The fan shaft and the blade shaft are directly linked, requiring no additional power source. The crushing and air supply functions can be driven synchronously by the drive motor, greatly reducing energy consumption and simplifying the equipment structure. At the same time, the continuous airflow can prevent the fine powder after crushing from accumulating in the rotating discharge pipe, ensuring smooth discharge and preventing production interruption caused by stopping to clean caking materials, thus improving overall production efficiency. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of a low-temperature polyacrylamide pulverizing device according to the present invention;
[0014] Figure 2 This is a rear view of a polyacrylamide cryogenic pulverizing device according to the present invention.
[0015] Figure 3 This is a cross-sectional view of a low-temperature pulverizing device for polyacrylamide according to this utility model;
[0016] Figure 4 This is an enlarged view of the gas guiding structure in a low-temperature polyacrylamide pulverizing device according to this utility model.
[0017] In the diagram: 1. Mounting plate; 2. Support legs; 3. Drive motor; 4. Crushing hood; 5. Feed box; 6. Mounting sleeve; 7. Rotary discharge pipe; 8. Blade shaft; 9. Crushing blade; 10. Air guide structure; 11. Air guide pipe; 12. Isolation net; 13. Fan box; 14. Fan shaft; 15. Fan blades; 16. Synchronous shaft. Detailed Implementation
[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0019] like Figures 1-4 As shown, a low-temperature pulverizing device for polyacrylamide is provided. Please refer to it carefully. Figures 1-4 The device includes a mounting plate 1, a drive motor 3, a blade shaft 8, and crushing blades 9. The drive motor 3 is fixedly mounted at the rear end of the mounting plate 1. The blade shaft 8 is movably mounted at the front end of the mounting plate 1. Multiple crushing blades 9 are fixedly mounted on the outside of the blade shaft 8. A crushing cover 4 is fixedly mounted on the front end of the mounting plate 1, located outside the blade shaft 8 and the crushing blades 9. An installation sleeve 6 is fixedly mounted on the bottom of the outer side of the crushing cover 4. A rotating discharge pipe 7 is movably mounted on the lower end of the installation sleeve 6. An air guide structure 10 is fixedly mounted on the front end of the crushing cover 4.
[0020] Please refer to this carefully. Figure 1 and Figure 2 The rear end of the mounting plate 1 is fixedly mounted on the outside of the drive motor 3 and the support bracket 2. The shaft of the drive motor 3 passes through the mounting plate 1 and is fixedly connected to the blade shaft 8.
[0021] Specifically, the drive motor 3 provides overall support and fixation. The operation of the drive motor 3 drives the blade shaft 8 and the crushing blade 9 to rotate, and the rotation of the crushing blade 9 crushes the polyacrylamide material in the crushing hood 4.
[0022] Please refer to this carefully. Figures 1-3 The top of the outer side of the crushing hood 4 is fixedly installed with a feeding box 5 that is connected through it, and the bottom of the crushing hood 4 is connected to the rotating discharge pipe 7 through the installation sleeve 6.
[0023] Specifically, the feeding box 5 serves to feed polyacrylamide material, and the rotating discharge pipe 7 serves to discharge the crushed polyacrylamide material. Furthermore, the rotating discharge pipe 7 can rotate around the mounting sleeve 6 to change the discharge direction of the polyacrylamide material.
[0024] Please refer to this carefully. Figure 3 and Figure 4The air guiding structure 10 includes an air guiding pipe 11, an isolation net 12, a fan box 13, a fan shaft 14, fan blades 15, and a synchronous shaft 16. The air guiding pipe 11 is fixedly installed at the front end of the crushing hood 4, the isolation net 12 is fixedly installed inside the rear of the air guiding pipe 11, the fan box 13 is fixedly installed at the front end of the air guiding pipe 11, the fan shaft 14 is movably installed inside the fan box 13, multiple fan blades 15 are fixedly installed outside the fan shaft 14, and the synchronous shaft 16 is fixedly installed at the rear end of the fan shaft 14.
[0025] Please refer to this carefully. Figure 3 and Figure 4 The fan blade 15 is located inside the fan box 13, and the blowing end of the fan blade 15 faces the air guide pipe 11.
[0026] Please refer to this carefully. Figure 3 and Figure 4 The air guide pipe 11 is connected to the interior of the crushing hood 4. The fan shaft 14 is inserted into the air guide pipe 11 and passes through the isolation net 12. The rear end of the fan shaft 14 is fixedly connected to the front end of the blade shaft 8.
[0027] Specifically, when the blade shaft 8 rotates, it simultaneously drives the fan shaft 14 and fan blades 15 to rotate inside the fan box 13. The rotation of the fan blades 15 generates airflow that is blown into the pulverizing hood 4 through the air duct 11, cooling the inside of the pulverizing hood 4 and simultaneously blowing the polyacrylamide to more efficiently contact the pulverizing blades 4 for pulverization.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A low-temperature pulverizing device for polyacrylamide, comprising a mounting plate (1), a drive motor (3), a blade shaft (8), and pulverizing blades (9), wherein the drive motor (3) is fixedly mounted at the rear end of the mounting plate (1), the blade shaft (8) is movably mounted at the front end of the mounting plate (1), and a plurality of pulverizing blades (9) are fixedly mounted on the outside of the blade shaft (8), characterized in that: The front end of the mounting plate (1) is fixedly mounted with a crushing cover (4) on the outside of the blade shaft (8) and the crushing blade (9). The bottom of the outer side of the crushing cover (4) is fixedly mounted with an installation sleeve (6). The lower end of the installation sleeve (6) is movably mounted with a rotating discharge pipe (7). The front end of the crushing cover (4) is fixedly mounted with an air guide structure (10).
2. The polyacrylamide low-temperature pulverizing equipment according to claim 1, characterized in that: The rear end of the mounting plate (1) is fixedly mounted on the outside of the drive motor (3) and the support bracket (2). The shaft of the drive motor (3) passes through the mounting plate (1) and is fixedly connected to the blade shaft (8).
3. The polyacrylamide low-temperature pulverizing equipment according to claim 1, characterized in that: The top of the outer side of the crushing hood (4) is fixedly installed with a feeding box (5) that is connected through it, and the bottom of the crushing hood (4) is connected to the rotating discharge pipe (7) through the installation sleeve (6).
4. The polyacrylamide low-temperature pulverizing equipment according to claim 1, characterized in that: The air guiding structure (10) includes an air guiding pipe (11), an isolation net (12), a fan box (13), a fan shaft (14), fan blades (15), and a synchronous shaft (16). The air guiding pipe (11) is fixedly installed at the front end of the crushing hood (4). The isolation net (12) is fixedly installed inside the rear of the air guiding pipe (11). The fan box (13) is fixedly installed at the front end of the air guiding pipe (11). The fan shaft (14) is movably installed inside the fan box (13). Multiple fan blades (15) are fixedly installed outside the fan shaft (14). The synchronous shaft (16) is fixedly installed at the rear end of the fan shaft (14).
5. The polyacrylamide low-temperature pulverizing equipment according to claim 4, characterized in that: The fan blade (15) is located inside the fan box (13), and the blowing end of the fan blade (15) faces the air guide pipe (11).
6. The polyacrylamide low-temperature pulverizing equipment according to claim 4, characterized in that: The air guide pipe (11) is connected to the interior of the crushing hood (4), and the fan shaft (14) is inserted into the air guide pipe (11) and passes through the isolation net (12). The rear end of the fan shaft (14) is fixedly connected to the front end of the blade shaft (8).