Reaction device for preparing polycarboxylate superplasticizer

Abstract

The utility model relates to a reaction device for preparing a polycarboxylic acid water reducing agent, and belongs to the technical field of water reducing agent preparation. The device mainly comprises a supporting base, a reaction kettle, a sealing cover, a stirring mechanism, a feeding pipe, an exhaust pipe, an exhaust valve, a discharging pipe, an electromagnetic valve and a controller, raw materials are fully stirred through the stirring mechanism, powder suspended in water can be uniformly dispersed, bubbles are avoided, the quality and performance stability of the water reducing agent are improved, gas generated in the reaction process is timely exhausted through the exhaust pipe and the exhaust valve, the pressure in the reaction kettle can be prevented from being abnormally increased, and safety accidents such as implosion and material flushing are avoided. The safety of the production process is guaranteed, the processes of stirring, exhausting, discharging and the like can be automatically carried out due to the arrangement of the controller, operation and control are convenient, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of water-reducing agent preparation technology, specifically relating to a reaction device for preparing polycarboxylate water-reducing agents. Background Technology

[0002] Polycarboxylate superplasticizer is an important concrete admixture and one of the key products of the new building materials industry. In the preparation and production process of polycarboxylate superplasticizer, it is usually necessary to use a corresponding reaction vessel to stir and mix the raw materials.

[0003] However, during the raw material mixing process, factors such as grinding aids, alkali content, and fineness in cement can generate a large number of air bubbles. Insufficient mixing can also lead to uneven dispersion of powder suspended in water, resulting in air bubbles. These air bubbles reduce the quality of the water-reducing agent, causing its performance to be unstable. Furthermore, excessive air bubbles can cause abnormal pressure increases inside the reactor, leading to safety accidents such as agglomeration and material overflow. Therefore, a reaction device for preparing polycarboxylate superplasticizers is proposed to solve the above problems. Utility Model Content

[0004] To overcome the problem that insufficient stirring during the production of polycarboxylate superplasticizers can lead to uneven dispersion of suspended powder in water, resulting in the formation of bubbles. These bubbles reduce the quality of the superplasticizer, causing unstable performance. Furthermore, excessive bubbles can cause abnormal pressure increases within the reactor, leading to safety accidents such as agglomeration and material overflow. This invention provides a reaction apparatus for preparing polycarboxylate superplasticizers. The stirring mechanism thoroughly stirs the raw materials, ensuring uniform dispersion of suspended powder in water and preventing bubble formation, thereby improving the quality and performance stability of the superplasticizer. The exhaust pipe and valve promptly discharge gases generated during the reaction, preventing abnormal pressure increases within the reactor and avoiding safety accidents such as agglomeration and material overflow, thus ensuring production safety. The controller allows for automatic operation of stirring, venting, and discharging processes, facilitating operation and control and improving production efficiency.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A reaction device for preparing polycarboxylate superplasticizer mainly includes a support base, a reaction vessel, a cover, a stirring mechanism, a feed pipe, an exhaust pipe, an exhaust valve, a discharge pipe, a solenoid valve, and a controller. The reaction vessel is installed on the top of the support base, and the cover is detachably installed on the top of the reaction vessel by fastening bolts. The interior of the reaction vessel is set as a cavity structure. The stirring mechanism is installed inside the reaction vessel. The feed pipe and the exhaust pipe are installed on the cover. An exhaust valve is installed on the exhaust pipe. The feed pipe and the exhaust pipe are connected to the interior of the reaction vessel. The discharge pipe is installed at the bottom of the reaction vessel and is connected to the interior of the reaction vessel. The solenoid valve is installed on the discharge pipe. A shell is provided on the outer wall of the reaction vessel. The controller is installed on the side wall of the shell. The stirring mechanism, the exhaust valve, the solenoid valve, and the controller are electrically connected.

[0006] The top of the cap is equipped with an additive tube for adding defoamer, and the additive tube is connected to the inside of the reaction vessel.

[0007] A cavity sandwich is formed between the outer shell and the reactor. A cooling pipe is installed inside the cavity sandwich. A temperature sensor and a pressure sensor are installed inside the reactor. The temperature sensor and the pressure sensor are electrically connected to the controller.

[0008] The stirring mechanism includes a rotating shaft, a motor, stirring blades, a spiral stirring blade, and a stirring paddle. The rotating shaft is rotatably mounted on the cover and located inside the reactor. The motor is mounted on the top of the cover and is connected to the rotating shaft via a drive. The stirring blades are mounted on the rotating shaft at equal intervals. The spiral stirring blade is mounted on the rotating shaft. The stirring paddle is mounted on the bottom of the rotating shaft. The motor is electrically connected to the controller.

[0009] The top of the cap is provided with hanging buckles at equal intervals.

[0010] The cover is provided with a transparent observation window.

[0011] The beneficial effects of this utility model are:

[0012] The mixing mechanism thoroughly mixes the raw materials, which can evenly disperse the powder suspended in the water and prevent the generation of bubbles, thereby improving the quality and performance stability of the water-reducing agent. The exhaust pipe and exhaust valve promptly discharge the gas generated during the reaction process, which can prevent abnormal pressure rise in the reactor and avoid safety accidents such as explosive agglomeration and material overflow, thus ensuring the safety of the production process. The controller settings enable the mixing, exhaust and discharge processes to be carried out automatically, which is convenient for operation and control and improves production efficiency. Attached Figure Description

[0013] Figure 1 This is an isometric schematic diagram of the present invention.

[0014] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 3 This is a top view of the structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of this utility model viewed from below.

[0017] Figure 5 This is a partial cross-sectional schematic diagram of the present invention.

[0018] Figure 6 This is a schematic diagram of the stirring mechanism. Detailed Implementation

[0019] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0020] This utility model discloses a reaction apparatus for preparing polycarboxylate superplasticizer. The reaction apparatus mainly includes a support base 1, a reaction vessel 2, a cover 3, a stirring mechanism 4, a feed pipe 5, an exhaust pipe 6, an exhaust valve 7, a discharge pipe 8, a solenoid valve 9, and a controller 10. The reaction vessel 2 is installed on the top of the support base 1. The cover 3 is detachably installed on the top of the reaction vessel 2 by fastening bolts. The interior of the reaction vessel 2 is a cavity structure. The stirring mechanism 4 is installed inside the reaction vessel 2. The feed pipe 5 and the exhaust pipe 6 are installed on the cover 3. An exhaust valve 7 is installed on the exhaust pipe 6. The feed pipe 5 and the exhaust pipe 6 are connected to the interior of the reaction vessel 2. The discharge pipe 8 is installed at the bottom of the reaction vessel 2 and is connected to the interior of the reaction vessel 2. The solenoid valve 9 is installed on the discharge pipe 8. A shell 21 is provided on the outer wall of the reaction vessel 2. The controller 10 is installed on the side wall of the shell 21. The stirring mechanism 4, the exhaust valve 7, the solenoid valve 9, and the controller 10 are electrically connected.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, the top of the cap 3 is equipped with an additive tube 11 for adding defoamer, and the additive tube 11 is connected to the inside of the reactor 2. According to process requirements, defoamer can be pre-injected through the additive tube 11 at the top of the cap 3, or left to be added dynamically later to deal with sudden bubble problems.

[0022] like Figure 5 As shown, a cavity sandwich is formed between the outer shell 21 and the reactor 2. A cooling pipe 12 is installed inside the cavity sandwich. A temperature sensor 13 and a pressure sensor 14 are installed inside the reactor 2. The temperature sensor 13 and the pressure sensor 14 are electrically connected to the controller 10.

[0023] like Figure 5 , Figure 6As shown, the stirring mechanism 4 includes a rotating shaft 41, a motor 42, stirring blades 43, a spiral stirring blade 44, and a stirring paddle 45. The rotating shaft 41 is rotatably mounted on the cover 3 and located inside the reactor 2. The motor 42 is mounted on the top of the cover 3 and is connected to the rotating shaft 41 via a transmission. The stirring blades 43 are mounted on the rotating shaft 41 at equal intervals. The spiral stirring blades 44 are mounted on the rotating shaft 41. The stirring paddle 45 is mounted at the bottom of the rotating shaft 41. The motor 42 is electrically connected to the controller 10. The controller 10 starts the motor 42, which drives the rotating shaft 41 to rotate the stirring blades 43, the spiral stirring blades 44, and the bottom stirring paddle 45 synchronously, forming multi-dimensional mixing. The equally spaced stirring blades 43 shear the material in the middle and upper layers, breaking up powder agglomerations. The spiral stirring blades 44 generate downward vortices, pushing bubbles from the liquid surface to the bottom and accelerating their collapse. The stirring paddle 45 strongly disturbs the deposited powder, preventing agglomeration.

[0024] like Figure 2 , Figure 3 As shown, the top of the cap 3 is provided with hooks 31 at equal intervals; the hooks 31 are designed to facilitate the removal of the cap 3, and can be lifted out of the vessel in conjunction with the stirring mechanism 4, making it convenient for thorough cleaning or replacement of parts.

[0025] like Figure 2 , Figure 3 As shown, the cover 3 is provided with a transparent observation window 32; the operator can monitor the mixing state of the material through the transparent observation window 32, adjust the stirring parameters in a timely manner, and observe whether there are bubbles accumulating.

[0026] Work process:

[0027] The raw materials for preparing polycarboxylate superplasticizer are added to reactor 2 through feed pipe 5. The feeding situation inside reactor 2 can be observed through transparent observation window 32. The operator starts motor 42 through controller. Motor 42 drives shaft 41 to rotate through transmission connection. Stirring blades 43, spiral stirring blades 44 and stirring paddle 45 on shaft 41 start to stir the raw materials. The function of stirring blade 43 is to fully mix the raw materials in the horizontal direction. The function of spiral stirring blade 44 is to form a circulation flow of raw materials in the vertical direction to further improve the mixing effect. The function of stirring paddle 45 is to enhance the stirring of raw materials at the bottom and prevent sedimentation. This stirring method can make the raw materials fully and evenly mixed, reducing the problem of bubbles or uneven dispersion of powder due to insufficient stirring. During the stirring process, the raw materials undergo chemical reaction to generate polycarboxylate superplasticizer. The exhaust valve 7 on exhaust pipe 6 is intelligently controlled by controller 10. When pressure sensor 14 detects abnormal pressure inside reactor 2, exhaust valve 7 is automatically opened to release excess gas and avoid sudden pressure rise that may cause explosive polymerization. Temperature sensor 13 monitors the temperature inside reactor 2 in real time and transmits the temperature signal to controller 10. If the temperature If the temperature is too high, the controller 10 controls the operation of the cooling pipe 12 to reduce the internal temperature of the reactor 2 through heat exchange between the cooling pipe 12 and the reactor 2, so as to maintain the internal temperature of the reactor 2 within a suitable range. If too many bubbles are generated during the reaction, defoamer can be added to the reactor 2 through the additive pipe 11. The role of the defoamer is to eliminate bubbles and improve the quality of the water-reducing agent. After the reaction is completed, the solenoid valve 9 on the discharge pipe 8 is opened to discharge the prepared polycarboxylate water-reducing agent from the discharge pipe 8. The discharge speed can be adjusted by controlling the opening of the solenoid valve 9. After the reaction is completed, the power supply and all valves are turned off, the cover 3 is removed, and the inside of the reactor 2 is cleaned and maintained. After cleaning, the cover 3 is reinstalled for the next use. During the entire operation, the operator can monitor and adjust the stirring speed, temperature, discharge, etc. through the controller 10 to ensure the smooth progress of the reaction and the stability of product quality. At the same time, the situation inside the reactor can be observed at any time through the observation window so as to detect and deal with problems in a timely manner. This reaction device has the advantages of reasonable structure, convenient operation, and stable performance, and is suitable for large-scale production of polycarboxylate water-reducing agent.

[0028] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A reaction apparatus for producing a polycarboxylate water reducer, characterized by: The utility model provides a kind of reaction device for preparing polycarboxylic acid water reducing agent, including support base (1), reaction kettle (2), cover (3), stirring mechanism (4), feed pipe (5), exhaust pipe (6), exhaust valve (7), discharge pipe (8), solenoid valve (9), controller (10), the reaction kettle (2) is installed at support base (1) top, cover (3) is detachably installed at reaction kettle (2) top by fastening bolt, reaction kettle (2) is internally provided as cavity structure, stirring mechanism (4) is installed in reaction kettle (2) inside, feed pipe (5), exhaust pipe (6) are installed on cover (3), exhaust valve (7) is installed on exhaust pipe (6), feed pipe (5), exhaust pipe (6) are communicated with reaction kettle (2) inside, discharge pipe (8) is installed at reaction kettle (2) bottom, and is communicated with reaction kettle (2) inside, solenoid valve (9) is installed on discharge pipe (8), shell (21) is provided on the outer wall of reaction kettle (2), controller (10) is installed on the side wall of shell (21), and stirring mechanism (4), exhaust valve (7), solenoid valve (9) are electrically connected with controller (10).

2. The reaction device for preparing polycarboxylate water reducer according to claim 1, characterized in that: The top of the cover (3) is provided with an additive pipe (11) for adding defoaming agent, and the additive pipe (11) is communicated with the inside of the reaction kettle (2).

3. The reaction device for preparing polycarboxylate water reducer according to claim 1 or 2, characterized in that: The shell (21) and the reaction kettle (2) form a cavity interlayer, and a cooling pipe (12) is installed in the cavity interlayer.

4. The reaction device for preparing polycarboxylate water reducer according to claim 1 or 2, characterized in that: The stirring mechanism (4) includes a rotating shaft (41), a motor (42), stirring blades (43), spiral stirring blades (44), and stirring paddles (45). The rotating shaft (41) is rotatably installed on the cover (3) and located inside the reaction kettle (2). The motor (42) is installed on the top of the cover (3), and the rotating shaft (41) is in transmission connection with the motor (42). The stirring blades (43) are installed at equal intervals on the rotating shaft (41). The spiral stirring blades (44) are installed on the rotating shaft (41). The stirring paddles (45) are installed at the bottom end of the rotating shaft (41). The motor (42) is electrically connected with the controller (10).

5. The reaction device for preparing polycarboxylate water reducer according to claim 1 or 2, characterized in that: The top of the cover (3) is provided with a hanging buckle (31) at equal intervals.

6. The reaction device for preparing polycarboxylate water reducer according to claim 1 or 2, characterized in that: The cover (3) is provided with a transparent observation window (32).

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