Carbonation device for preparing nano calcium carbonate

Abstract

The utility model relates to nanometer calcium carbonate preparation technical field, concretely is a kind of carbonization device of preparation nanometer calcium carbonate, including reaction tank, the side fixed insertion installation of the top of reaction tank is equipped with feed pipe, the bottom of reaction tank is fixed insertion installation is equipped with discharge pipe, the bottom of reaction tank is fixedly installed with several support legs, the other side of the top of reaction tank is provided with pressure stabilizing mechanism. This carbonization device of preparation nanometer calcium carbonate, by the cooperation of pressure stabilizing mechanism, exhaust pipe, piston, pressure relief hole, fixed plate, limit rod, spring, limit frame, movable rod and pull rod, pressure stabilizing mechanism can control the pressure in reaction tank, when the pressure in tank reaches threshold value, piston moves up to open pressure relief hole exhaust pressure relief, and piston resets to prevent gas loss after pressure decreases. Pressure sensor real-time monitoring, if pressure stabilizing mechanism fails, staff can manually pull piston to release pressure, and operation is flexible.

Description

Technical Field

[0001] This utility model relates to the field of nano-calcium carbonate preparation technology, specifically a carbonation device for preparing nano-calcium carbonate. Background Technology

[0002] Nano-calcium carbonate, as an important inorganic chemical product, has wide applications in many fields such as plastics, rubber, and coatings. Carbonation is one of the commonly used methods for preparing nano-calcium carbonate; its principle is to react lime milk with carbon dioxide gas to produce calcium carbonate precipitate.

[0003] Existing carbonization equipment has significant shortcomings in practical applications. Continuously introducing carbon dioxide gas into the equipment will cause the gas pressure inside the tank to rise continuously. From an equipment perspective, if the gas pressure inside the tank cannot be precisely controlled, excessively high pressure will cause stress damage to the reactor structure, affecting its service life. From a reaction perspective, unstable gas pressure will interfere with gas-liquid mass transfer and reaction equilibrium, leading to abnormal reaction processes and ultimately adversely affecting product yield and quality.

[0004] Therefore, it is necessary to provide a carbonation apparatus for preparing nano-calcium carbonate to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a carbonation device for preparing nano-calcium carbonate, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A carbonation apparatus for preparing nano-calcium carbonate, comprising: The reaction vessel has a feed pipe fixedly installed on one side of the top, a discharge pipe fixedly installed on the bottom, several support legs fixedly installed on the bottom, a pressure stabilizing mechanism on the other side of the top, a pressure sensor inside the reaction vessel, and an external pipe fixedly installed on the rear side of the top. The pressure stabilizing mechanism includes an exhaust pipe, which is fixedly inserted and installed on the other side of the top of the reaction vessel. A movable rod is slidably inserted into the top of the exhaust pipe, and a piston is fixedly installed at the bottom of the movable rod. The piston is slidably installed inside the exhaust pipe. A pressure relief hole is opened on the outer wall of the exhaust pipe. Symmetrically distributed limiting rods are fixedly installed on the top of the exhaust pipe. A limiting frame is fixedly installed at the top of the limiting rod. A fixing plate is fixedly installed on the outer wall of the movable rod. A spring is sleeved on the outer wall of the movable rod between the fixing plate and the limiting frame.

[0007] Preferably, a stirring shaft is rotatably mounted on the top of the inside of the reaction vessel, a plurality of stirring rollers are fixedly mounted on the outer wall of the stirring shaft, a plurality of stirring blades are fixedly mounted on the outer wall of the stirring rollers, and the stirring blades are spiral in shape, and a driving mechanism is provided on the top of the reaction vessel.

[0008] By adopting the above technical solutions, the disturbance of materials in the reaction vessel can be enhanced, the stirring efficiency can be improved, the gas-liquid contact and mass transfer can be fully promoted, and the carbonization reaction can be carried out efficiently.

[0009] Preferably, an annular distribution pipe is fixedly installed at the top inside the reaction vessel, and one end of an external pipe is fixedly connected to the annular distribution pipe and communicates with the inside of the annular distribution pipe. Several air holes are opened on the lower side of the outer wall of the annular distribution pipe.

[0010] By adopting the above technical solution, carbon dioxide can be uniformly dispersed into the reaction vessel, increasing the contact area with the materials, accelerating the reaction rate, and improving reaction efficiency and product quality.

[0011] Preferably, the drive mechanism includes a support frame, which is fixedly installed on the top of the reaction vessel. A servo motor is fixedly installed on the support frame, and the top end of the stirring shaft passes through the reaction vessel and extends to the top of the reaction vessel, where it is fixedly connected to the drive end of the servo motor.

[0012] By adopting the above technical solution, a stable power can be provided for stirring, ensuring the effective rotation of the stirring shaft, stirring roller and stirring blade, and promoting efficient reaction.

[0013] Preferably, the feed pipe is equipped with a flow regulating valve, and the discharge pipe is equipped with a valve.

[0014] By adopting the above technical solutions, the flow regulating valve of the feed pipe can accurately control the lime slurry feed rate, so that the reaction proceeds at the optimal feed rate; the valve of the discharge pipe can flexibly control the material discharge, which facilitates the control of the reaction process and the timing of discharge, and ensures the high efficiency and stability of the reaction.

[0015] Preferably, a pull rod is fixedly installed at the top end of the movable rod.

[0016] By adopting the above technical solution, the pull rod makes it easier for operators to apply force to the movable rod, making it easier to control the movement of the movable rod and facilitating the operation and adjustment of related components.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model utilizes a pressure stabilizing mechanism, an exhaust pipe, a piston, a pressure relief hole, a fixed plate, a limiting rod, a spring, a limiting frame, a movable rod, and a pull rod in combination. The pressure stabilizing mechanism can regulate the pressure inside the reaction vessel. When the pressure inside the vessel reaches a threshold, the piston moves upward to open the pressure relief hole to release gas and pressure. After the pressure decreases, the piston returns to its original position to prevent gas loss. A pressure sensor monitors in real time. If the pressure stabilizing mechanism malfunctions, the operator can manually pull the piston to release pressure, ensuring flexible operation and allowing the reaction to proceed under suitable pressure, thus ensuring the safe and efficient operation of the device.

[0018] 2. This invention utilizes a reaction vessel, supporting legs, a feed pipe, a flow regulating valve, a servo motor, a support frame, an external pipe, an annular distribution pipe, vents, a stirring roller, stirring blades, a stirring shaft, a discharge pipe, and valves. Carbon dioxide enters the reaction vessel evenly through the external pipe and vents on the annular distribution pipe, ensuring full contact with the lime slurry. The servo motor drives the stirring shaft, stirring roller, and spiral stirring blades to rotate, enhancing gas-liquid disturbance, improving stirring efficiency, promoting gas-liquid mass transfer, and driving the carbonation reaction efficiently. After the reaction is complete, nano-calcium carbonate product can be smoothly discharged, improving production quality and efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the voltage stabilizing mechanism in this utility model; Figure 4 This is a schematic diagram of the structure of the stirring shaft and stirring blades in this utility model.

[0020] In the diagram: 1. Reaction vessel; 2. Support leg; 3. Feed pipe; 4. Flow regulating valve; 5. Servo motor; 6. Support frame; 7. External pipe; 8. Pressure stabilizing mechanism; 9. Annular distribution pipe; 10. Vent; 11. Stirring roller; 12. Stirring blade; 13. Stirring shaft; 14. Discharge pipe; 15. Exhaust pipe; 16. Piston; 17. Pressure relief hole; 18. Fixing plate; 19. Limiting rod; 20. Spring; 21. Limiting frame; 22. Movable rod; 23. Pull rod; 24. Valve. Detailed Implementation

[0021] 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.

[0022] Example 1 Please see Figures 1-4 One embodiment provided by this utility model: A carbonation apparatus for preparing nano-calcium carbonate, comprising: The reaction vessel 1 has a feed pipe 3 fixedly installed on one side of the top of the reaction vessel 1, a discharge pipe 14 fixedly installed on the bottom of the reaction vessel 1, several support legs 2 fixedly installed on the bottom of the reaction vessel 1, a pressure stabilizing mechanism 8 set on the other side of the top of the reaction vessel 1, a pressure sensor set inside the reaction vessel 1, and an external pipe 7 fixedly installed on the rear side of the top of the reaction vessel 1.

[0023] The specific pressure stabilizing mechanism 8 includes an exhaust pipe 15, which is fixedly installed on the other side of the top of the reaction vessel 1. A movable rod 22 is slidably inserted into the top of the exhaust pipe 15, and a piston 16 is fixedly installed at the bottom of the movable rod 22. The piston 16 is slidably installed inside the exhaust pipe 15. A pressure relief hole 17 is opened on the outer wall of the exhaust pipe 15. Symmetrically distributed limiting rods 19 are fixedly installed on the top of the exhaust pipe 15. A limiting frame 21 is fixedly installed on the top of the limiting rod 19. A fixing plate 18 is fixedly installed on the outer wall of the movable rod 22. A spring 20 is sleeved on the outer wall of the movable rod 22 between the fixing plate 18 and the limiting frame 21.

[0024] The pressure stabilizing mechanism 8, combined with the internal pressure sensor of the reaction vessel 1, can monitor and regulate the gas pressure inside the reaction vessel 1 in real time, preventing excessive gas pressure from damaging the structure of the reaction vessel 1, affecting the reaction process and product quality.

[0025] Example 2 Reference Figure 1 , Figure 2 and Figure 4 This is the second embodiment of the present invention. Based on the previous embodiment, a stirring shaft 13 is rotatably installed on the top of the reaction vessel 1. Several stirring rollers 11 are fixedly installed on the outer wall of the stirring shaft 13. Several stirring blades 12 are fixedly installed on the outer wall of the stirring rollers 11. The stirring blades 12 are spiral in shape. A driving mechanism is provided on the top of the reaction vessel 1.

[0026] The specific driving mechanism includes a support frame 6, which is fixedly installed on the top of the reaction vessel 1. A servo motor 5 is fixedly installed on the support frame 6. The top end of the stirring shaft 13 passes through the reaction vessel 1 and extends to the top of the reaction vessel 1, where it is fixedly connected to the driving end of the servo motor 5.

[0027] The servo motor 5 further drives the stirring shaft 13 to rotate, which in turn drives the stirring roller 11 and stirring blades 12 to rotate. The spiral stirring blades 12 can enhance the disturbance of lime slurry and carbon dioxide gas in the reaction tank 1 during rotation, effectively improving the stirring efficiency, promoting full mixing and mass transfer of gas and liquid, and ensuring full contact between carbon dioxide and lime slurry, further promoting the carbonization reaction, increasing the reaction rate and degree, which helps to improve the yield and quality of products such as nano calcium carbonate, and ensures the efficient and stable reaction in the reaction tank 1.

[0028] Example 3 Reference Figure 2 and Figure 4 This is the third embodiment of the present invention. In this embodiment, based on the previous embodiment, an annular distribution pipe 9 is fixedly installed on the top of the inside of the reaction vessel 1, and one end of the external pipe 7 is fixedly connected to the annular distribution pipe 9 and communicates with the inside of the annular distribution pipe 9. Several air holes 10 are opened on the lower side of the outer wall of the annular distribution pipe 9.

[0029] The specific external pipe 7 introduces carbon dioxide into the annular distribution pipe 9. The annular distribution pipe 9 disperses the carbon dioxide evenly into the reaction vessel 1 through several air holes 10 on the lower side of its outer wall, so that the carbon dioxide can come into contact with the lime slurry in the reaction vessel 1 more widely and evenly, increasing the gas-liquid contact area and accelerating the carbonization reaction rate.

[0030] The working principle of this utility model is as follows: During use, the external pipe 7 is connected to an external carbon dioxide gas source. Then, an appropriate amount of lime slurry is added to the reaction tank 1 through the feed pipe 3, while the flow regulating valve 4 is opened to precisely control the lime slurry feeding rate. After the carbon dioxide gas source is turned on, carbon dioxide enters the bottom of the reaction tank 1 through the external pipe 7 and undergoes a carbonization reaction with the lime slurry. During the reaction, as carbon dioxide is continuously introduced, the pressure inside the reaction tank 1 gradually increases. When the threshold is reached, it pushes the piston 16 inside the exhaust pipe 15 upwards, causing the movable rod 22 and the fixed plate 18 to move, cooperating with the limiting frame 21 to compress the spring 20. The upward movement of the piston 16 opens the pressure relief hole 17 to release pressure. After the pressure decreases, the piston 16 resets under the elastic force of the spring 20, closing the pressure relief hole 17 to prevent gas loss. The pressure stabilizing mechanism 8 can regulate the pressure inside the tank, ensuring the reaction proceeds at a suitable pressure. In addition, the pressure sensor inside the reaction tank 1 monitors in real time. If the pressure stabilizing mechanism 8 fails and the piston 16 cannot release pressure normally, the staff can manually pull the piston 16 upward to release pressure through the pull rod 23 and the movable rod 22. The operation is flexible and ensures the safe and stable operation of the device.

[0031] All electrical components mentioned in this paper are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer, and existing publicly available power connection technologies are not elaborated here. Parts not mentioned in this paper are either identical to existing technologies or can be implemented using existing technologies. During the carbonation reaction between carbon dioxide and lime slurry, carbon dioxide gas enters the annular distribution pipe 9 through the external pipe 7 and enters the reaction tank 1 from multiple points through the vents 10, ensuring full contact with the lime slurry. Simultaneously, the servo motor 5 drives the stirring shaft 13 to rotate, which in turn drives the stirring roller 11 and stirring blades 12 to rotate. The spiral structure design of the stirring blades 12 enhances the disturbance of the lime slurry and carbon dioxide gas during stirring, improving stirring efficiency, effectively promoting gas-liquid mass transfer, and further advancing the carbonation reaction. After the reaction is complete, the valve 24 on the discharge pipe 14 is opened to discharge the obtained nano-calcium carbonate product.

[0032] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A carbonation apparatus for preparing nano-calcium carbonate, characterized in that, It includes: A reaction vessel (1) is provided with a feed pipe (3) fixedly inserted on one side of the top of the reaction vessel (1), a discharge pipe (14) fixedly inserted on the bottom of the reaction vessel (1), several support legs (2) fixedly installed on the bottom of the reaction vessel (1), a pressure stabilizing mechanism (8) is provided on the other side of the top of the reaction vessel (1), a pressure sensor is provided inside the reaction vessel (1), and an external pipe (7) is fixedly inserted on the rear side of the top of the reaction vessel (1). The pressure stabilizing mechanism (8) includes an exhaust pipe (15), which is fixedly installed on the other side of the top of the reaction vessel (1). A movable rod (22) is slidably inserted into the top of the exhaust pipe (15), and a piston (16) is fixedly installed at the bottom of the movable rod (22). The piston (16) is slidably installed inside the exhaust pipe (15). A pressure relief hole (17) is opened on the outer wall of the exhaust pipe (15). A symmetrically distributed limiting rod (19) is fixedly installed on the top of the exhaust pipe (15). A limiting frame (21) is fixedly installed on the top of the limiting rod (19). A fixing plate (18) is fixedly installed on the outer wall of the movable rod (22). A spring (20) is sleeved on the outer wall of the movable rod (22) between the fixing plate (18) and the limiting frame (21).

2. The carbonation apparatus for preparing nano-calcium carbonate according to claim 1, characterized in that: A stirring shaft (13) is rotatably installed on the top of the inside of the reaction vessel (1). Several stirring rollers (11) are fixedly installed on the outer wall of the stirring shaft (13). Several stirring blades (12) are fixedly installed on the outer wall of the stirring rollers (11), and the stirring blades (12) are spiral. A driving mechanism is provided on the top of the reaction vessel (1).

3. The carbonation apparatus for preparing nano-calcium carbonate according to claim 1, characterized in that: The top of the inside of the reaction vessel (1) is fixedly installed with an annular distribution pipe (9), and one end of the external pipe (7) is fixedly connected to the annular distribution pipe (9) and communicates with the inside of the annular distribution pipe (9). Several air holes (10) are opened on the lower side of the outer wall of the annular distribution pipe (9).

4. The carbonation apparatus for preparing nano-calcium carbonate according to claim 2, characterized in that: The drive mechanism includes a support frame (6), which is fixedly installed on the top of the reaction vessel (1). A servo motor (5) is fixedly installed on the support frame (6). The top end of the stirring shaft (13) passes through the reaction vessel (1) and extends to the top of the reaction vessel (1) and is fixedly connected to the drive end of the servo motor (5).

5. The carbonation apparatus for preparing nano-calcium carbonate according to claim 1, characterized in that: The feed pipe (3) is equipped with a flow regulating valve (4), and the discharge pipe (14) is equipped with a valve (24).

6. The carbonation apparatus for preparing nano-calcium carbonate according to claim 1, characterized in that: A pull rod (23) is fixedly installed at the top of the movable rod (22).

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