Polycarboxylate superplasticizer production batching device

Abstract

The utility model discloses a batching device for producing a polycarboxylate superplasticizer, belongs to the technical field of concrete auxiliary materials, and aims to solve the technical problem of poor mixing effect of a batching device in the prior art. The polycarboxylate superplasticizer production batching device comprises a reaction kettle, a partition plate is arranged in the middle of the interior of the reaction kettle, the interior space of the reaction kettle is divided into an upper cavity and a lower cavity by the partition plate, the cavity above the partition plate is a premixing cavity, the cavity below the partition plate is a secondary mixing cavity, and a stirring mechanism is assembled in the premixing cavity; a discharging opening is formed in the position, close to the inner wall of the reaction kettle, of the partition plate, the discharging opening is communicated with the premixing cavity and the secondary mixing cavity, a valve is assembled in the discharging opening, and a material guide plate is arranged in the secondary mixing cavity. The batching device for producing the polycarboxylate superplasticizer has a secondary mixing function, ensures that raw materials are uniformly distributed and fully fused, greatly improves the mixing and preparing effect of the polycarboxylate superplasticizer, and ensures the final performance of the polycarboxylate superplasticizer.

Description

Technical Field

[0001] This utility model belongs to the field of concrete auxiliary materials technology, specifically relating to a polycarboxylate superplasticizer production batching device. Background Technology

[0002] Polycarboxylate superplasticizer is a high-performance water-reducing agent widely used in cement concrete in projects such as highways, bridges, dams, tunnels, and high-rise buildings. As a cement dispersant, polycarboxylate superplasticizer can significantly reduce the amount of mixing water, improve the fluidity of concrete mixtures, or reduce the amount of cement used per unit while maintaining the slump of concrete, thereby saving cement.

[0003] In the production process of polycarboxylate superplasticizers, the batching stage is crucial. However, existing batching devices for polycarboxylate superplasticizer production have many problems. These problems not only affect production efficiency but may also adversely affect the quality of the superplasticizer. Specifically, traditional batching devices usually use a single stirring method for mixing. Powdered raw materials such as sodium methacrylate sulfonate and ammonium persulfate used to prepare polycarboxylate superplasticizers tend to settle to the bottom, making it difficult to achieve uniform material distribution and resulting in uneven batching. The single stirring method makes it difficult for the materials to be fully integrated, thus affecting the final performance of the superplasticizer. Therefore, this application proposes a batching device for polycarboxylate superplasticizer production. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a batching device for the production of polycarboxylate superplasticizer, which aims to solve the technical problem of poor mixing effect of the batching device under the existing technology.

[0005] Technical solution

[0006] To solve the above-mentioned technical problems, this utility model provides a polycarboxylate superplasticizer production batching device, including a reaction vessel. A partition plate is provided in the middle of the reaction vessel, which divides the internal space of the reaction vessel into upper and lower cavities. The cavity above the partition plate is a premixing cavity, and the cavity below the partition plate is a secondary mixing cavity. A stirring mechanism is installed in the premixing cavity.

[0007] The partition plate has a discharge port near the inner wall of the reactor. The discharge port connects the premixing chamber and the secondary mixing chamber. A valve is installed in the discharge port. A guide plate is installed in the secondary mixing chamber. The guide plate collects the polycarboxylate superplasticizer discharged from the discharge port and guides it towards the center of the secondary mixing chamber for discharge.

[0008] Preferably, the reactor is provided with a top cover, and the top cover is provided with a feeding port.

[0009] Preferably, the stirring mechanism includes a shaft vertically rotatably mounted between the top cover and the partition plate, and stirring blades disposed on the side wall of the shaft, wherein a stirring motor for driving the shaft to rotate is mounted on the top cover.

[0010] Preferably, the partition plate arches upward in the middle, and the stirring blades are distributed with a gradual downward tilt away from the shaft.

[0011] Preferably, the guide plate is configured as a funnel-shaped structure, the side of the guide plate is sealed and fixed to the inner wall of the reactor, the bottom of the reactor is arc-shaped and is provided with a discharge pipe, and a control valve is installed on the discharge pipe.

[0012] Preferably, a valve plate is rotatably mounted inside the discharge port, and a valve stem is connected to one side of the valve plate. The valve stem extends out of the reactor, and turning the valve stem causes the valve plate to rotate, which can block or open the discharge port.

[0013] Preferably, a heating pipe is installed inside the side wall of the reactor located above the partition plate, and a jacket is provided. The jacket is located outside the heating pipe, and the jacket is filled with heat-insulating material.

[0014] Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention uses a partition plate to divide the internal space of the reactor into a premixing chamber and a secondary mixing chamber. Raw materials for preparing polycarboxylate superplasticizer, such as vinyl allyl ester macromonomer, acrylic acid, sodium methacrylate sulfonate, ammonium persulfate, and water, are added to the reactor through the feed port. Separated by the partition plate, the raw materials remain in the premixing chamber. Steam is circulated through the heating pipe to provide high-temperature reaction conditions for mixing and preparing the polycarboxylate superplasticizer. A stirring mechanism is used to stir and mix the raw materials in the premixing chamber, achieving the premixing preparation of the polycarboxylate superplasticizer. After premixing, the mixture is then... The discharge port is opened via the valve, allowing the premixed polycarboxylate superplasticizer in the premixing chamber to be discharged into the secondary mixing chamber at the bottom of the reactor. Since the discharge port is located near the inner wall of the reactor via the partition plate, the premixed polycarboxylate superplasticizer can be discharged from the periphery of the premixing chamber and then, guided by the funnel-shaped guide plate, gather and discharge towards the center of the secondary mixing chamber. This process of diversion and re-gathering ensures that the polycarboxylate superplasticizer is mixed twice, guaranteeing uniform distribution and full integration of the raw materials. This significantly improves the mixing and formulation effect of the polycarboxylate superplasticizer and ensures the final performance of the superplasticizer. Attached image description:

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

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the reactor in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the partition plate and the shaft in this utility model;

[0021] Figure 4 This is a schematic diagram of the material guide plate in this utility model;

[0022] Figure 5 This utility model Figure 2 Enlarged view of point A in the image.

[0023] The labels in the attached diagram are as follows: 1. Reactor; 2. Top cover; 3. Feed port; 4. Stirring motor; 5. Divider plate; 6. Guide plate; 7. Shaft; 8. Stirring blade; 9. Heating tube; 10. Jacket; 11. Discharge pipe; 12. Discharge port; 13. Valve plate; 14. Valve stem. Detailed Implementation

[0024] 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.

[0025] This embodiment provides a polycarboxylate superplasticizer production batching device, the structural schematic diagram of which is shown below. Figures 1-5As shown, the reactor includes a reactor 1 with a top cover 2 and a feed port 3. A partition plate 5 is located in the middle of the reactor 1, dividing the internal space of the reactor 1 into two cavities. The cavity above the partition plate 5 is a premixing cavity, and the cavity below the partition plate 5 is a secondary mixing cavity. A stirring mechanism is installed in the premixing cavity. The stirring mechanism includes a shaft 7 vertically rotating between the top cover 2 and the partition plate 5 and stirring blades 8 set on the side wall of the shaft 7. A stirring motor 4 for driving the shaft 7 to rotate is installed on the top cover 2. Raw materials such as vinyl allyl ester macromonomer, acrylic acid, sodium methacrylate sulfonate, ammonium persulfate, and water used to prepare polycarboxylate superplasticizer are fed into the reactor 1 through the feed port 3. Under the separation of the partition plate 5, the raw materials remain in the premixing cavity of the reactor 1. The stirring motor 4 is started to drive the shaft 7 and stirring blades 8 to rotate, stirring and mixing the raw materials in the premixing cavity to achieve the premixing preparation of polycarboxylate superplasticizer.

[0026] In this embodiment, a heating pipe 9 is installed inside the side wall of the reactor 1 located above the partition plate 5, and a jacket 10 is provided. The jacket 10 is located outside the heating pipe 9, and the jacket 10 is filled with heat-insulating material. Steam is circulated in the heating pipe 9 for heating, which provides high-temperature reaction conditions for the polycarboxylate superplasticizer to be mixed and prepared in the premixing chamber. The jacket 10 can play a heat-insulating role and reduce heat loss. The jacket 10 can be made of materials such as rock wool.

[0027] In a further embodiment, a discharge port 12 is provided on the partition plate 5 near the inner wall of the reactor 1. The discharge port 12 connects the premixing chamber and the secondary mixing chamber, and a valve is installed inside the discharge port 12. A guide plate 6 is provided in the secondary mixing chamber. The guide plate 6 collects the polycarboxylate superplasticizer discharged from the discharge port 12 and guides it towards the center of the secondary mixing chamber for discharge. With this structural design, after the polycarboxylate superplasticizer is premixed in the premixing chamber, the discharge port 12 is opened by the valve, and the premixed polycarboxylate superplasticizer in the premixing chamber... The premixed polycarboxylate superplasticizer is discharged into the secondary mixing chamber at the bottom of the reactor 1 through the discharge port 12. Since the discharge port 12 is located near the inner wall of the reactor 1 on the partition plate 5, the premixed polycarboxylate superplasticizer can be discharged from the periphery of the premixing chamber and then gathered and discharged towards the center of the secondary mixing chamber under the guidance of the guide plate 6. This process of diversion and re-gathering and discharge ensures that the polycarboxylate superplasticizer is mixed twice, which can ensure that the raw materials are evenly distributed and fully integrated, improve the mixing and formulation effect of the polycarboxylate superplasticizer, and ensure the final performance of the superplasticizer.

[0028] In this embodiment, a valve plate 13 is rotatably mounted inside the discharge port 12. A valve stem 14 is connected to one side of the valve plate 13. The valve stem 14 extends out of the reactor 1. Twisting the valve stem 14 causes the valve plate 13 to rotate, which can block or open the discharge port 12.

[0029] In this embodiment, the middle of the partition plate 5 is arched upwards to ensure that the premixed polycarboxylate superplasticizer can be smoothly discharged from the discharge port 12 into the secondary mixing chamber. The stirring blades 8 are distributed with a gradual downward inclination away from the shaft 7 to ensure the mixing effect of the polycarboxylate superplasticizer in the premixing chamber.

[0030] In this embodiment, the guide plate 6 is configured as a funnel-shaped structure. The premixed polycarboxylate superplasticizer is discharged from the periphery of the premixing chamber and gathers and discharges towards the center of the secondary mixing chamber under the guidance of the funnel-shaped guide plate 6. The side of the guide plate 6 is sealed and fixed to the inner wall of the reactor 1. The bottom of the reactor 1 is arc-shaped and is provided with a discharge pipe 11. A control valve is installed on the discharge pipe 11 for discharging the mixed polycarboxylate superplasticizer.

[0031] Working principle: During use, turning valve stem 14 rotates valve plate 13 to cut off and block discharge port 12. Then, the raw materials used to prepare polycarboxylate superplasticizer, such as vinyl allyl ester macromonomer, acrylic acid, sodium methacrylate sulfonate, ammonium persulfate, and water, are added into reactor 1 through feed port 3. Under the separation of partition plate 5, the raw materials remain in the premixing chamber of reactor 1. Steam is circulated in heating pipe 9 to provide high-temperature reaction conditions for the mixing and preparation of polycarboxylate superplasticizer in the premixing chamber. The stirring motor 4 is started to drive shaft 7 and stirring blade 8 to rotate, stirring and mixing the raw materials in the premixing chamber, thus realizing the premixing preparation of polycarboxylate superplasticizer. After premixing is completed, Turning valve stem 14 rotates valve plate 13, opening discharge port 12. Premixed polycarboxylate superplasticizer in premixing chamber is discharged into secondary mixing chamber at the bottom of reactor 1 through discharge port 12. Since discharge port 12 is located near the inner wall of reactor 1 on partition plate 5, premixed polycarboxylate superplasticizer can be discharged from the periphery of premixing chamber and then gathered and discharged towards the center of secondary mixing chamber under the guidance of funnel-shaped guide plate 6. This process of diversion and re-gathering and discharge ensures secondary mixing of polycarboxylate superplasticizer, ensuring uniform distribution and full fusion of raw materials, greatly improving the mixing and formulation effect of polycarboxylate superplasticizer, and ensuring the final performance of superplasticizer.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] 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 polycarboxylic acid water reducer production batching device, comprising a reaction kettle (1), characterized in that: a partition plate (5) is arranged in the middle of the reaction kettle (1), the partition plate (5) divides the internal space of the reaction kettle (1) into two cavities in upper and lower positions, the cavity above the partition plate (5) is a premixing cavity, the cavity below the partition plate (5) is a secondary mixing cavity, and a stirring mechanism is arranged in the premixing cavity; a discharge port (12) is arranged at a position close to the inner wall of the reaction kettle (1) of the partition plate (5), the discharge port (12) communicates the premixing cavity and the secondary mixing cavity, a valve element is arranged in the discharge port (12), a guide plate (6) is arranged in the secondary mixing cavity, and the guide plate (6) receives the polycarboxylic acid water reducer falling from the discharge port (12) and guides and discharges the polycarboxylic acid water reducer towards the middle of the secondary mixing cavity. A top cover (2) is arranged at the top end of the reaction kettle (1), and a feeding port (3) is arranged on the top cover (2). 2.The polycarboxylate superplasticizer production batching device according to claim 1, characterized in that, The stirring mechanism comprises a shaft (7) vertically rotatably arranged between the top cover (2) and the partition plate (5) and stirring blades (8) arranged on the side wall of the shaft (7), and a stirring motor (4) for driving the shaft (7) to rotate is arranged on the top cover (2).

3. The polycarboxylate superplasticizer production batching device according to claim 2, characterized in that, The middle part of the partition plate (5) is arched upwards, and the stirring blades (8) are gradually inclined downwards in a direction away from the shaft (7).

4. The polycarboxylate superplasticizer production batching device according to claim 3, characterized in that, The guide plate (6) is arranged in a funnel-shaped structure, the side edges of the guide plate (6) are sealingly fixed to the inner wall of the reaction kettle (1), the bottom end of the reaction kettle (1) is in a circular arc shape and is provided with a discharge pipe (11), and a control valve is arranged on the discharge pipe (11).

5. The polycarboxylate superplasticizer production batching device according to claim 1, characterized in that, A valve plate (13) is rotatably arranged in the discharge port (12), one side of the valve plate (13) is connected with a valve rod (14), the valve rod (14) extends out of the reaction kettle (1), and rotating the valve rod (14) drives the valve plate (13) to rotate to block or open the discharge port (12).

6. The polycarboxylate superplasticizer production batching device according to claim 1, characterized in that, A heating pipe (9) is arranged in the inner wall of the reaction kettle (1) above the partition plate (5), and a sandwich layer (10) is arranged outside the heating pipe (9), and the sandwich layer (10) is filled with heat preservation material.

7. The polycarboxylate superplasticizer production batching device according to claim 1, characterized in that, ​

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