Polycarboxylic acid water reducer high-efficiency mixing device with double helix structure

Abstract

The utility model relates to the technical field of chemical production, disclose a kind of polycarboxylate water-reducing agent high-efficiency mixing device of double helix structure, including rack, the middle part of rack is fixedly connected with mixing bucket, the top of mixing bucket is fixedly connected with motor, motor output end is fixedly connected with transmission shaft, two grooves are opened in the inner wall of transmission shaft, two sliding blocks are slidably connected in the inner wall of groove, two the stirring shaft is fixedly connected between sliding block, the outer wall of stirring shaft is fixedly connected with spiral stirring rod one, spiral stirring rod two is installed in the outer wall of spiral stirring rod one, the top of the outer wall of stirring shaft is provided with reciprocating drive assembly.In the utility model, adopt double helix stirring structure, spiral stirring rod one and spiral stirring rod two of the outer wall of stirring shaft, can be stirred simultaneously from different range to polycarboxylate water-reducing agent when rotating.And realize up and down reciprocating motion by reciprocating drive assembly, so that stirring shaft changes height constantly in the process of rotation.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure. Background Technology

[0002] Polycarboxylate superplasticizer is a high-performance concrete admixture that disperses cement particles by adsorbing onto their surface, reducing water consumption and thus improving the strength, durability, and other properties of concrete. It is widely used in construction engineering, bridge construction, and water conservancy and hydropower projects. In the production process of polycarboxylate superplasticizer, the mixing unit is a key piece of equipment.

[0003] Most existing mixing devices employ a single stirring structure, with the stirring shaft rotating only once. This results in a limited mixing range and low contact frequency, leading to low mixing efficiency and long mixing times, making it difficult to meet the needs of large-scale production. Furthermore, a single stirring method cannot ensure that the material is fully mixed in all parts of the mixing tank, easily causing localized incomplete mixing, resulting in unstable product quality and affecting the performance of concrete. Therefore, a high-efficiency mixing device for polycarboxylate superplasticizer with a double-helix structure is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure. It aims to improve the problem that the single stirring method in the existing technology is difficult to ensure that the material is fully stirred in all positions in the mixing tank, which easily leads to local insufficiency in mixing and thus unstable product quality.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure, comprising a frame, a mixing tank fixedly connected to the middle of the frame, a motor fixedly connected to the top of the mixing tank, a drive shaft fixedly connected to the output end of the motor, two grooves formed on the inner wall of the drive shaft, two sliders slidably connected to the inner wall of the grooves, a stirring shaft fixedly connected between the two sliders, a spiral stirring rod one fixedly connected to the outer wall of the stirring shaft, a spiral stirring rod two installed on the outer wall of the spiral stirring rod one, a reciprocating drive assembly provided at the top of the outer wall of the stirring shaft, a reset assembly provided at the bottom of the outer wall of the stirring shaft, a discharge pipe fixedly connected to the bottom of the mixing tank, and a filter assembly provided inside the discharge pipe; The reciprocating drive assembly includes an inclined block and a slide rod. The inclined block is fixedly connected to the top of the outer wall of the stirring shaft, the slide rod is fixedly connected to the top wall of the mixing tank, and the bottom of the slide rod is slidably connected to the inner wall of the inclined block.

[0006] As a further description of the above technical solution: The reset assembly includes a limiting block and a housing. The limiting block is fixedly connected to the bottom of the stirring shaft, and the housing is installed at the bottom of the stirring shaft by multiple support rods. A spring is fixedly connected to the inner wall of the housing.

[0007] As a further description of the above technical solution: The filtration assembly includes a filter box, which is fixedly connected to the outer wall of the discharge pipe. A filter screen is installed inside the filter box, and an installation component is provided on the outer wall of the filter box.

[0008] As a further description of the above technical solution: The mounting assembly includes two housings, which are fixedly connected to the outer wall of the filter box. A pull rod is slidably connected to the inner wall of the housing, and a limit plate is fixedly connected to the outer wall of the pull rod. A spring is sleeved on the outer wall of the pull rod.

[0009] As a further description of the above technical solution: The top of the frame has a feed inlet, and a controller is installed on the top edge of the frame. The diameter of the second spiral stirring rod is larger than that of the first spiral stirring rod.

[0010] As a further description of the above technical solution: The outer wall of the limiting block is slidably connected to the inner wall of the housing, and the height of the limiting block is greater than the height of the inclined block.

[0011] As a further description of the above technical solution: The pull rod passes through the outer shell and the filter box and engages with the filter screen.

[0012] As a further description of the above technical solution: A handle is fixedly connected to the top of the filter screen.

[0013] This utility model has the following beneficial effects: 1. In this utility model, a double-helix stirring structure is adopted. The first and second helical stirring rods on the outer wall of the stirring shaft can simultaneously stir the polycarboxylate superplasticizer from different ranges when rotating. Furthermore, the reciprocating drive component realizes the up-and-down reciprocating motion, so that the stirring shaft continuously changes its height during rotation, breaking the limitations of traditional single-rotation stirring, greatly increasing the mixing range and contact frequency of the material, and significantly improving the mixing efficiency; 2. In this invention, the discharged polycarboxylate superplasticizer is filtered through a filter screen inside the filter box, effectively intercepting impurities and preventing them from entering the product, thus ensuring product quality. When the filter screen needs cleaning or replacement, the operator only needs to pull the lever to overcome the elasticity of spring two, which easily removes the filter screen, reducing maintenance difficulty. Attached Figure Description

[0014] Figure 1 This is a perspective view of a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure proposed in this utility model; Figure 2 This is a cross-sectional view of the cylindrical body of a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure proposed in this utility model; Figure 3 This is a cross-sectional view of the drive shaft of a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure proposed in this utility model; Figure 4 This is a cross-sectional view of the shell of a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure proposed in this utility model; Figure 5 This is a cross-sectional view of the filter box of a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure proposed in this utility model; Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0015] Legend: 1. Frame; 2. Mixing tank; 3. Motor; 4. Drive shaft; 5. Slide groove; 6. Slider; 7. Stirring shaft; 8. Spiral stirring rod one; 9. Spiral stirring rod two; 10. Inclined block; 11. Slide rod; 12. Limiting block; 13. Housing; 14. Spring one; 15. Discharge pipe; 16. Filter box; 17. Filter screen; 18. Outer shell; 19. Pull rod; 20. Limiting plate; 21. Spring two; 22. Feed inlet; 23. Controller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figure 1-3This utility model provides one embodiment: a high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure, including a frame 1. The frame 1 serves as the supporting foundation for the entire device, providing a stable installation position for other subsequent components. A mixing tank 2 is fixedly connected to the middle of the frame 1. Mixing tank 2 is the main mixing area for polycarboxylate superplasticizer. A motor 3 is fixedly connected to the top of mixing tank 2, providing power for the mixing process. A drive shaft 4 is fixedly connected to the output end of motor 3, directly transmitting power to the drive shaft 4 to rotate. Two grooves 5 are formed on the inner wall of drive shaft 4, providing tracks for the sliding of subsequent sliders 6. Two sliders 6 are slidably connected to the inner wall of grooves 5, enabling their mobility within the drive shaft 4 and facilitating the lifting and lowering of the stirring shaft 7. A stirring shaft 7 is fixedly connected between the two sliders 6, establishing a connection between the stirring shaft 7 and drive shaft 4. This allows the stirring shaft 7 to rotate with the drive shaft 4 and simultaneously lift and lower under the action of the sliders 6. A spiral stirring rod 8 is fixedly connected to the outer wall of stirring shaft 7. When the stirring shaft 7 rotates, the spiral stirring rod 8 can stir the polycarboxylate superplasticizer in the mixing tank 2, playing a preliminary mixing role. The spiral stirring rod 9 is installed on the outer wall of the spiral stirring rod 8. The spiral stirring rod 9 and the spiral stirring rod 8 work together to enhance the stirring effect and achieve efficient mixing of polycarboxylate superplasticizer. A reciprocating drive assembly is set at the top of the outer wall of the stirring shaft 7. The reciprocating drive assembly enables the stirring shaft 7 to move up and down while rotating, further improving the uniformity and efficiency of mixing. A reset assembly is set at the bottom of the outer wall of the stirring shaft 7. The function of the reset assembly is to enable the stirring shaft 7 to return to its original position smoothly after completing the upward movement, ensuring that the reciprocating movement of the stirring shaft 7 can continue. A discharge pipe 15 is fixedly connected to the bottom of the mixing tank 2. The discharge pipe 15 is used to discharge the mixed polycarboxylate superplasticizer from the mixing tank 2. A filter assembly is set inside the discharge pipe 15. The filter assembly can filter the discharged polycarboxylate superplasticizer and remove impurities. Reference Figure 2 The reciprocating drive assembly includes a slant block 10 and a slide rod 11. The slant block 10 is fixedly connected to the top of the outer wall of the stirring shaft 7. The fixed connection between the slant block 10 and the stirring shaft 7 allows it to rotate together with the stirring shaft 7. The slide rod 11 is fixedly connected to the top wall of the mixing tank 2. The slide rod 11 provides guidance for the sliding of the slant block 10, ensuring that the slant block 10 moves in a specific direction. The bottom of the slide rod 11 is slidably connected to the inner wall of the slant block 10. When the stirring shaft 7 rotates, the slant block 10 rotates accordingly. Under the restriction of the slide rod 11, the slant block 10 slides along the slide rod 11, thereby driving the stirring shaft 7 to perform up-and-down reciprocating motion.

[0018] Reference Figure 4The reset assembly includes a limiting block 12 and a housing 13. The limiting block 12 and the housing 13 together constitute the reset assembly, providing structural support for the reset of the stirring shaft 7. The limiting block 12 is fixedly connected to the bottom of the stirring shaft 7, and the fixed connection between the limiting block 12 and the stirring shaft 7 allows it to move together with the stirring shaft 7. The housing 13 is installed at the bottom of the stirring shaft 7 by multiple support rods, ensuring that there is a certain amount of space between the housing 13 and the stirring shaft 7, providing a basis for the sliding of the stirring shaft 7. A spring 14 is fixedly connected to the inner wall of the housing 13. When the stirring shaft 7 descends, the limiting block 12 compresses the spring 14. When the stirring shaft 7 loses its descent power, the elastic force of the spring 14 pushes the limiting block 12, causing the stirring shaft 7 to reset.

[0019] Reference Figure 5 The filter assembly includes a filter box 16, which is fixedly connected to the outer wall of the discharge pipe 15. The filter box 16 serves as the main body of the filter assembly and provides installation space for the filter screen 17. The filter screen 17 is installed inside the filter box 16 and can intercept impurities in the polycarboxylate superplasticizer. The outer wall of the filter box 16 is provided with an installation component, which facilitates the installation and removal of the filter screen 17 and makes it convenient to clean and replace the filter screen 17.

[0020] Reference Figure 6 The mounting assembly includes two housings 18, which are fixedly connected to the outer wall of the filter box 16. The housings 18 provide installation space and protection for other components. A pull rod 19 is slidably connected to the inner wall of the housing 18. The sliding connection between the pull rod 19 and the housing 18 allows the pull rod 19 to move within the housing 18, thereby fixing and releasing the filter screen 17. A limit plate 20 is fixedly connected to the outer wall of the pull rod 19. The limit plate 20 is fixed to the outer wall of the pull rod 19 to limit the range of movement of the pull rod 19 and prevent the pull rod 19 from sliding out of the housing 18. A second spring 21 is sleeved on the outer wall of the pull rod 19. The second spring 21 provides elasticity after the pull rod 19 moves, so that the pull rod 19 returns to its original position and maintains the fixed state of the filter screen 17.

[0021] Reference Figure 1 and Figure 2 The top of the frame 1 is provided with a feed inlet 22, which provides a channel for the addition of polycarboxylate superplasticizer and facilitates the material to enter the mixing tank 2. A controller 23 is installed on the top edge of the frame 1. The controller 23 allows the operator to control the motor 3 and adjust the mixing process. The diameter of the second spiral stirring rod 9 is larger than that of the first spiral stirring rod 8, which enables different stirring ranges and intensities to be formed during the stirring process, further improving the uniformity and efficiency of the mixing.

[0022] Reference Figure 2The outer wall of the limiting block 12 is slidably connected to the inner wall of the housing 13 to ensure that the limiting block 12 can move smoothly within the housing 13 and realize the reset of the stirring shaft 7. The height of the limiting block 12 is greater than the height of the inclined block 10 to ensure that the reset component can function normally during the movement of the stirring shaft 7 and will not cause motion interference.

[0023] Reference Figure 6 The pull rod 19 passes through the outer shell 18 and the filter box 16 and engages with the filter screen 17, thereby fixing the filter screen 17 and ensuring that the filter screen 17 will not move during the filtration process.

[0024] Reference Figure 5 The top of the filter screen 17 is fixedly connected to a handle, which makes it easy for operators to install and remove the filter screen 17.

[0025] Working principle: When it is necessary to mix polycarboxylate superplasticizer, the polycarboxylate superplasticizer raw material is put into the mixing tank 2 through the feed port 22. Then, the rotation speed and rotation time of the motor 3 are set by the controller 23, and the motor 3 is started. After the motor 3 starts, it will drive the drive shaft 4 to start rotating. Since the inner wall of the drive shaft 4 has a sliding groove 5, and the inner wall of the sliding groove 5 is slidably connected to the slider 6, and the stirring shaft 7 is fixedly connected between the two sliders 6, the rotation of the drive shaft 4 drives the stirring shaft 7 to rotate. The spiral stirring rod 1 8 and the spiral stirring rod 2 9, which are fixedly connected to the outer wall of the stirring shaft 7, start to stir the polycarboxylate superplasticizer in the mixing tank 2 when the stirring shaft 7 rotates, realizing the initial mixing.

[0026] As the stirring shaft 7 rotates, the inclined block 10 fixed to the top of the outer wall of the stirring shaft 7 also rotates. Since the slide rod 11 is fixedly connected to the top wall of the mixing tank 2 and its bottom is slidably connected to the inner wall of the inclined block 10, the inclined block 10 is restricted by the slide rod 11 during rotation and will slide along the slide rod 11, thereby driving the stirring shaft 7 to descend. When the stirring shaft 7 descends, it will drive the limiting block 12 at its bottom to descend and compress the spring 14 fixed to the inner wall of the housing 13. When the stirring shaft 7 loses its descent power, the elastic force of the spring 14 pushes the limiting block 12, causing the stirring shaft 7 to return to its original position.

[0027] After mixing, the polycarboxylate superplasticizer is discharged through the bottom fixed connector 15. During the discharge process, the filter screen 17 in the filter box 16 can intercept impurities in the polycarboxylate superplasticizer. When it is necessary to clean or replace the filter screen 17, the operator pulls the lever 19 to overcome the elastic force of the spring 21, so that the lever 19 is separated from the filter box 16, and the filter screen 17 can be taken out for operation.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure, comprising a frame (1), characterized in that: A mixing tank (2) is fixedly connected to the middle of the frame (1). A motor (3) is fixedly connected to the top of the mixing tank (2). A transmission shaft (4) is fixedly connected to the output end of the motor (3). Two sliding grooves (5) are opened on the inner wall of the transmission shaft (4). Two sliders (6) are slidably connected to the inner wall of the sliding grooves (5). A stirring shaft (7) is fixedly connected between the two sliders (6). A spiral stirring rod one (8) is fixedly connected to the outer wall of the stirring shaft (7). A spiral stirring rod two (9) is installed on the outer wall of the spiral stirring rod one (8). A reciprocating drive assembly is provided at the top of the outer wall of the stirring shaft (7). A reset assembly is provided at the bottom of the outer wall of the stirring shaft (7). A discharge pipe (15) is fixedly connected to the bottom of the mixing tank (2). A filter assembly is provided inside the discharge pipe (15). The reciprocating drive assembly includes a slant block (10) and a slide rod (11). The slant block (10) is fixedly connected to the top of the outer wall of the stirring shaft (7), and the slide rod (11) is fixedly connected to the top wall of the mixing tank (2). The bottom of the slide rod (11) is slidably connected to the inner wall of the slant block (10).

2. The high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure according to claim 1, characterized in that: The reset assembly includes a limiting block (12) and a housing (13). The limiting block (12) is fixedly connected to the bottom of the stirring shaft (7). The housing (13) is installed at the bottom of the stirring shaft (7) by multiple support rods. A spring (14) is fixedly connected to the inner wall of the housing (13).

3. The high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure according to claim 1, characterized in that: The filter assembly includes a filter box (16), which is fixedly connected to the outer wall of the discharge pipe (15). A filter screen (17) is installed inside the filter box (16), and an installation component is provided on the outer wall of the filter box (16).

4. The high-efficiency mixing device for polycarboxylate superplasticizer with a double helix structure according to claim 3, characterized in that: The installation assembly includes two housings (18), which are fixedly connected to the outer wall of the filter box (16). A pull rod (19) is slidably connected to the inner wall of the housing (18). A limit plate (20) is fixedly connected to the outer wall of the pull rod (19), and a spring (21) is sleeved on the outer wall of the pull rod (19).

5. The high-efficiency mixing device for a double-helix polycarboxylate superplasticizer according to claim 1, characterized in that: The top of the frame (1) is provided with a feed inlet (22), and a controller (23) is installed on the top edge of the frame (1). The diameter of the second spiral stirring rod (9) is larger than the diameter of the first spiral stirring rod (8).

6. The high-efficiency mixing device for a double-helix polycarboxylate superplasticizer according to claim 2, characterized in that: The outer wall of the limiting block (12) is slidably connected to the inner wall of the housing (13), and the height of the limiting block (12) is greater than the height of the inclined block (10).

7. The high-efficiency mixing device for a double-helix polycarboxylate superplasticizer according to claim 4, characterized in that: The pull rod (19) passes through the outer shell (18) and the filter box (16) and engages with the filter screen (17).

8. The high-efficiency mixing device for a double-helix polycarboxylate superplasticizer according to claim 4, characterized in that: A handle is fixedly connected to the top of the filter (17).

Images