A polycarboxylic acid high-performance water-reducing agent production neutralizing device

Abstract

The utility model discloses a polycarboxylic acid high -performance water reducing agent production neutralization device, including neutralization mixing jar and mixed frame, the bottom fixedly connected with support foot of mixed frame, and mixed frame is stably placed on the ground through support foot, and the inside of mixed frame is swingly connected with movable plate through connecting piece, and the inside rotationally connected with carousel of movable plate. The utility model is that neutralization mixing jar adopts the inclination design (>10 DEG), and combines the jar body rotation, the relative rotation of stirring rod and the reciprocating movement of movable plate, realizes material multidimensional movement, significantly promotes the mixing evenness and reaction efficiency of polycarboxylic acid raw materials and neutralizing agent, solves the problem that the mixing mode of single stirring rod is generally adopted in the prior art, and the stirring range and acting intensity are limited, and it is difficult to realize uniform mixing in a short time, and the material exists dead angle in the reaction kettle, thereby the time required for reaching reaction equilibrium is prolonged, and the production efficiency is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of water-reducing agent production equipment, and in particular to a neutralization device for the production of polycarboxylate-based high-performance water-reducing agents. Background Technology

[0002] Polycarboxylate superplasticizers (PCEs) are an indispensable core admixture in modern concrete engineering. They are widely used due to their excellent water reduction rate, dispersibility, and slump retention. The neutralization reaction in the production process is a key step. It is necessary to precisely mix the acidic or alkaline polycarboxylate mother liquor with the corresponding neutralizing agent (such as liquid alkali, sodium hydroxide solution, etc.) to adjust to the target pH value and ensure the stability of product performance. At present, the reaction vessel type neutralization device commonly used in the industry usually has a single stirring rod (usually anchor type, paddle type, or propeller type) as its core mixing component. The stirring rod is driven by a motor to rotate in the reaction vessel, attempting to achieve the initial mixing of reactants through mechanical shearing and fluid motion.

[0003] However, existing neutralization devices that rely solely on a single stirring rod for mixing have significant technical drawbacks: low mixing efficiency and a tendency to create mixing dead zones. The stirring range and intensity of a single stirring rod are limited, especially when processing polycarboxylate solution systems with gradually increasing viscosity or requiring rapid homogenization. It is difficult to achieve sufficient and uniform mixing of the mother liquor and neutralizing agent in a short time, resulting in mixing dead zones formed at the edges, bottom, or above the stirring shaft of the vessel, leading to uneven reaction. This defect directly leads to multiple problems: First, excessively high or low local concentrations can cause incomplete or uneven neutralization reactions, potentially causing local pH levels to exceed limits, increased side reactions, or the formation of gels or precipitates, severely affecting the performance stability and storability of the final water-reducing agent product. Second, insufficient mixing significantly prolongs the time required to reach reaction equilibrium, reducing production efficiency.

[0004] Therefore, how to provide a neutralization device for the production of polycarboxylate-based high-performance water-reducing agents is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a neutralization device for the production of polycarboxylate-based high-performance water-reducing agents. This invention solves the problem that the existing technology generally uses a single stirring rod for mixing, which limits the stirring range and intensity, making it difficult to achieve uniform mixing in a short time. This results in dead zones in the reaction vessel, which prolongs the time required to reach reaction equilibrium and reduces production efficiency.

[0006] A neutralization device for producing a polycarboxylate-based high-performance water-reducing agent according to an embodiment of the present invention includes a neutralization mixing tank and a mixing frame. The bottom of the mixing frame is fixedly connected to a support foot, and the mixing frame is stably placed on the ground by the support foot. A movable plate is movably connected to the inside of the mixing frame through a connector. A turntable is rotatably connected to the inside of the movable plate, and the turntable is fixedly sleeved on the surface of the neutralization mixing tank. A stirring rod is rotatably connected to the inside of the neutralization mixing tank. A transmission gear is fixedly connected to the top of the stirring rod. A rotating gear is fixedly connected to the top of the movable plate, and the rotating gear meshes with the transmission gear. A drive assembly for rotating the neutralization mixing tank is provided at the bottom of the movable plate.

[0007] The neutralization mixing tank is tilted, and the tilt angle of the neutralization mixing tank is greater than ten degrees.

[0008] The neutralization mixing tank has a feed inlet on its side near the top and a discharge outlet at its bottom.

[0009] The turntable has a tapered side cross-section, and tapered bearings are fixedly installed at the top and bottom of the turntable. The turntable is rotatably connected to the inside of the movable plate through the tapered bearings.

[0010] The drive assembly includes a drive motor, a drive gear, and a ring gear. The drive motor is fixedly mounted on the bottom of the movable plate, the drive gear is fixedly connected to the output shaft end of the drive motor, and the ring gear is fixedly connected to the lower surface of the turntable. The ring gear meshes with the drive gear.

[0011] The drive assembly also includes a drive gear, a drive head, and a reciprocating drive frame. The drive gear is rotatably connected to the lower surface of the movable plate and meshes with the drive gear. The drive head is fixedly connected to the lower surface of the drive gear near the outermost position. The reciprocating drive frame is movably sleeved on the surface of the drive head, and one end of the reciprocating drive frame is fixedly connected to the bottom of the hybrid frame.

[0012] The connector includes a guide groove and a guide bar. The guide bar is fixedly connected to the side of the movable plate, the guide groove is opened on both sides of the inner wall of the hybrid frame, and the guide bar is slidably connected inside the guide groove.

[0013] The beneficial effects of this utility model are:

[0014] The neutralization mixing tank adopts an inclined design (>10°), which, combined with the tank's rotation, the relative rotation of the stirring rod, and the reciprocating movement of the movable plate, enables multi-dimensional movement of materials. This significantly improves the mixing uniformity and reaction efficiency of polycarboxylate raw materials and neutralizing agents. It solves the problem that the mixing method commonly used in existing technologies with a single stirring rod has limited stirring range and intensity, making it difficult to achieve uniform mixing in a short time. This results in dead zones in the reaction vessel, which prolongs the time required to reach reaction equilibrium and reduces production efficiency.

[0015] A single drive motor simultaneously controls the rotation of the tank (drive gear → ring gear), the rotation of the stirring rod (rotation gear → transmission gear), and the reciprocating movement of the movable plate (drive gear → reciprocating drive frame), simplifying the transmission chain and reducing energy consumption.

[0016] The drive assembly converts rotational motion into periodic reciprocating movement of the movable plate by driving the gears and the reciprocating drive frame, forcing the material inside the tank to continuously shake and preventing sedimentation and agglomeration. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a polycarboxylate-based high-performance water-reducing agent production neutralization device proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the driving component position in the production and neutralization device of a polycarboxylate-based high-performance water-reducing agent proposed in this utility model.

[0020] Figure 3 This is a cross-sectional three-dimensional structural diagram of the stirring rod, neutralization mixing tank, and turntable positions in a polycarboxylate-based high-performance water-reducing agent production neutralization device proposed in this utility model.

[0021] The attached diagram shows: 1. Neutralization mixing tank; 2. Mixing frame; 3. Support legs; 4. Movable plate; 5. Turntable; 6. Stirring rod; 7. Transmission gear; 8. Rotating gear; 9. Drive assembly; 10. Feed inlet; 11. Discharge outlet; 12. Drive motor; 13. Drive gear; 14. Ring gear; 15. Drive gear; 16. Drive head; 17. Reciprocating drive frame; 18. Guide chute; 19. Guide bar. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0023] refer to Figure 1-3 In this embodiment, a neutralization mixing tank 1 and a mixing frame 2 are included. The bottom of the mixing frame 2 is fixedly connected to a support foot 3, and the mixing frame 2 is stably placed on the ground by the support foot 3.

[0024] refer to Figure 1-3In this embodiment, the interior of the mixing frame 2 is movably connected to a movable plate 4 via a connector. The interior of the movable plate 4 is rotatably connected to a turntable 5. The turntable 5 is fixedly fitted onto the surface of the neutralization mixing tank 1. The side cross-section of the turntable 5 is "conical". Conical bearings are fixedly installed at the top and bottom of the turntable 5. The turntable 5 is rotatably connected to the interior of the movable plate 4 via the conical bearings.

[0025] In practice, the "conical" shape design is intended to improve the stability of the turntable 5 rotating on the movable plate 4 and to increase its longitudinal and lateral bearing capacity.

[0026] refer to Figure 1-3 In this embodiment, the neutralization mixing tank 1 has an inlet 10 on its side near the top and an outlet 11 at its bottom. The neutralization mixing tank 1 is inclined and the inclination angle of the neutralization mixing tank 1 is greater than ten degrees.

[0027] In practice, the neutralization mixing tank 1 here is set at an angle, such as... Figure 1 and Figure 2 As shown, tilting the neutralization mixing tank 1 allows it to rotate and drive the material to neutralize and mix. This also allows the transmission gear 7 to be driven to rotate by the rotating gear 8 when the neutralization mixing tank 1 rotates.

[0028] refer to Figure 1-3 In this embodiment, a stirring rod 6 is rotatably connected inside the neutralization mixing tank 1. A transmission gear 7 is fixedly connected to the top of the stirring rod 6. A rotating gear 8 is fixedly connected to the top of the movable plate 4. The rotating gear 8 meshes with the transmission gear 7. A drive assembly 9 for rotating the neutralization mixing tank 1 is provided at the bottom of the movable plate 4. The drive assembly 9 includes a drive motor 12, a drive gear 13, and a ring gear 14. The drive motor 12 is fixedly installed at the bottom of the movable plate 4. The drive gear 13 is fixedly connected to the output shaft end of the drive motor 12. The ring gear 14 is fixedly connected to the lower surface of the turntable 5. The ring gear 14 meshes with the drive gear 13.

[0029] In practice, the drive motor 12 is powered by an external municipal power supply system, and the speed of the drive motor 12 is adjustable. When the drive motor 12 starts, it drives the drive gear 13 to rotate slowly. The speed is adjusted according to the actual usage. The rotation of the drive gear 13 drives the ring gear 14 to rotate. The rotation of the ring gear 14 drives the turntable 5 to rotate. The rotation of the turntable 5 drives the neutralization mixing tank 1 to rotate. While the neutralization mixing tank 1 rotates, the internal material rotates. At the same time, the transmission gear 7 rotates on top of the rotating gear 8. The rotation of the transmission gear 7 drives the stirring rod 6 to rotate. The rotation of the stirring rod 6 stirs and neutralizes the material inside the neutralization mixing tank 1. The neutralization mixing tank 1 rotates while the stirring rod 6 stirs to achieve the purpose of rapid neutralization.

[0030] refer to Figure 1-3 In this embodiment, the drive assembly 9 further includes a drive gear 15, a drive head 16, and a reciprocating drive frame 17. The drive gear 15 is rotatably connected to the lower surface of the movable plate 4 and meshes with the drive gear 13. The drive head 16 is fixedly connected to the lower surface of the drive gear 15 near the outermost position. The reciprocating drive frame 17 is movably sleeved on the surface of the drive head 16. One end of the reciprocating drive frame 17 is fixedly connected to the bottom of the hybrid frame 2. The connecting parts include a guide groove 18 and a guide bar 19. The guide bar 19 is fixedly connected to the side of the movable plate 4. The guide groove 18 is opened on both sides of the inner wall of the hybrid frame 2. The guide bar 19 is slidably connected inside the guide groove 18.

[0031] In specific implementation, when the drive motor 12 drives the drive gear 13 to rotate, it will drive the drive gear 15 to rotate. The rotation of the drive gear 13 will drive the drive head 16 to rotate. Since the reciprocating drive frame is positioned on the mixing frame 2, the rotation of the drive head 16 will push the drive gear 15 to move in the opposite direction. The movement of the drive gear 15 will drive the movable plate 4 to slide back and forth in the guide groove 18 through the guide bar 19, so as to achieve the purpose of reciprocating movement and oscillation. It should be noted that the drive motor 12 rotates and the drive gear 13 rotates relatively slowly. The above-mentioned stirring method combined with the reciprocating movement method further accelerates the neutralization speed.

[0032] The working principle of this utility model is as follows:

[0033] After the drive motor 12 is started, its output shaft drives the drive gear 13 to rotate. On one hand, the drive gear 13 meshes with the ring gear 14 fixed at the bottom of the turntable 5, pushing the turntable 5 to rotate under the support of the conical bearing, causing the tilted neutralizing mixing tank 1 to rotate around the central axis of the turntable 5. On the other hand, the drive gear 13 meshes with and drives the gear 15 to rotate, causing the eccentric drive head 16 at the bottom of the gear 15 to circulate within the reciprocating drive frame 17 fixed to the mixing frame 2, forcing the movable plate 4 to move horizontally back and forth along the guide groove 18 of the mixing frame 2 via the guide strip 19 on the side. During the horizontal reciprocating movement of the movable plate 4, the rotating gear 8 at its top and the gear 14... The transmission gear 7 fixed to the top of the stirring rod 6 is continuously engaged. As the stirring rod 6 rotates with the tank, the transmission gear 7 is driven to rotate by the rotating gear 8. The rotation of the transmission gear 7 causes the stirring rod 6 to rotate within the neutralization mixing tank 1, enabling the stirring rod 6 to achieve additional rotational stirring within the tank. At the same time, the reciprocating movement of the movable plate 4 drives the entire neutralization mixing tank 1 to move horizontally back and forth synchronously. Combined with the tank tilt angle (>10°), the material inside the tank forms turbulence under the combined action of shaking force, rotational centrifugal force, and stirring shear force. After the raw materials are fed into the inlet 10, they are efficiently mixed and neutralized in the three-dimensional composite motion, and the final reaction products are discharged from the bottom outlet 11.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A neutralization device for the production of polycarboxylate-based high-performance water-reducing agents, characterized in that, The mixture includes a neutralization mixing tank (1) and a mixing frame (2). The bottom of the mixing frame (2) is fixedly connected to a support foot (3). The mixing frame (2) is stably placed on the ground by the support foot (3). The interior of the mixing frame (2) is movably connected to a movable plate (4) through a connector. The interior of the movable plate (4) is rotatably connected to a turntable (5). The turntable (5) is fixedly sleeved on the surface of the neutralization mixing tank (1). The neutralization mixing tank (1) is rotatably connected to a stirring rod (6), and a transmission gear (7) is fixedly connected to the top of the stirring rod (6). A rotating gear (8) is fixedly connected to the top of the movable plate (4), and the rotating gear (8) meshes with the transmission gear (7). A drive assembly (9) for driving the neutralization mixing tank (1) to rotate is provided at the bottom of the movable plate (4).

2. The neutralization device for the production of polycarboxylate-based high-performance water-reducing agents according to claim 1, characterized in that, The neutralization mixing tank (1) is inclined, and the inclination angle of the neutralization mixing tank (1) is greater than ten degrees.

3. The polycarboxylate-based high-performance water-reducing agent production neutralization device according to claim 2, characterized in that, The neutralization mixing tank (1) has an inlet (10) on its side near the top and an outlet (11) at its bottom.

4. The neutralization device for the production of polycarboxylate-based high-performance water-reducing agents according to claim 3, characterized in that, The turntable (5) has a tapered side cross-section. Tapered bearings are fixedly installed at the top and bottom of the turntable (5). The turntable (5) is rotatably connected to the inside of the movable plate (4) through the tapered bearings.

5. The neutralization apparatus for the production of polycarboxylate-based high-performance water-reducing agents according to claim 4, characterized in that, The drive assembly (9) includes a drive motor (12), a drive gear (13), and a ring gear (14). The drive motor (12) is fixedly installed at the bottom of the movable plate (4). The drive gear (13) is fixedly connected to the output shaft end of the drive motor (12). The ring gear (14) is fixedly connected to the lower surface of the turntable (5). The ring gear (14) meshes with the drive gear (13).

6. The neutralization apparatus for the production of polycarboxylate-based high-performance water-reducing agents according to claim 5, characterized in that, The drive assembly (9) also includes a drive gear (15), a drive head (16), and a reciprocating drive frame (17). The drive gear (15) is rotatably connected to the lower surface of the movable plate (4) and meshes with the drive gear (13). The drive head (16) is fixedly connected to the lower surface of the drive gear (15) near the outermost position. The reciprocating drive frame (17) is movably sleeved on the surface of the drive head (16). One end of the reciprocating drive frame (17) is fixedly connected to the bottom of the hybrid frame (2).

7. The neutralization apparatus for the production of polycarboxylate-based high-performance water-reducing agents according to claim 6, characterized in that, The connector includes a guide groove (18) and a guide strip (19). The guide strip (19) is fixedly connected to the side of the movable plate (4). The guide groove (18) is opened on both sides of the inner wall of the hybrid frame (2). The guide strip (19) is slidably connected inside the guide groove (18).

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