Microwave continuous synthesis reactor for nano-zinc oxide

Abstract

The utility model relates to nanometer material synthetic equipment technical field, concretely relates to nanometer zinc oxide microwave continuous synthesis reactor, including raw material mixing jar, the top fixed mounting of raw material mixing jar has a plurality of feeding tubes, the top center position of raw material mixing jar fixed mounting has the stirring motor, the output shaft end fixed mounting of stirring motor has the stirring shaft that sets up vertically, a plurality of stirring vanes are fixedly installed on stirring shaft, and stirring vane is located in raw material mixing jar, a plurality of first material guide plates and a plurality of second material guide plates are fixedly installed on the top tank wall of raw material mixing jar, and the bottom fixed mounting of raw material mixing jar has the unloading pipe, the valve is fixedly installed on unloading pipe, the bottom of unloading pipe is connected with spiral feeder through temperature -resistant pipe, and the outer portion of the cylinder of spiral feeder is provided with a plurality of microwave generator. The utility model is convenient for the synthetic preparation operation of nanometer zinc oxide, and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of nanomaterial synthesis equipment technology, and more specifically, to a microwave continuous synthesis reactor for nano-zinc oxide. Background Technology

[0002] Nano zinc oxide, as an important multifunctional inorganic material, has excellent optical, electrical and catalytic properties and is widely used in rubber, ceramics, coatings, electronics and other fields. The synthesis methods of nano zinc oxide mainly include sol-gel method, hydrothermal method and microwave-assisted synthesis method. Among them, microwave-assisted synthesis method has attracted widespread attention due to its advantages such as uniform heating, fast reaction rate and uniform product particle size.

[0003] Nano-zinc oxide can be prepared by isothermal reaction under microwave radiation at 90℃ using a continuous microwave method. However, existing microwave synthesis reactors for nano-zinc oxide are mostly batch reactors, which have the following drawbacks: firstly, they cannot achieve continuous feeding and discharging, resulting in low production efficiency and difficulty in meeting the needs of large-scale industrial production; secondly, uneven mixing of raw materials during the reaction and poor uniformity of microwave heating lead to a wide particle size distribution in the product, affecting product quality. Therefore, we propose a continuous microwave synthesis reactor for nano-zinc oxide. Utility Model Content

[0004] The purpose of this invention is to provide a microwave continuous synthesis reactor for nano-zinc oxide to address the deficiencies mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A microwave continuous synthesis reactor for nano-zinc oxide includes a raw material mixing tank. Multiple feed pipes are fixedly installed on the top of the raw material mixing tank. A stirring motor is fixedly installed at the center of the top of the raw material mixing tank. A vertically arranged stirring shaft is fixedly installed at the end of the output shaft of the stirring motor. Multiple stirring blades are fixedly installed on the stirring shaft, and the stirring blades are located inside the raw material mixing tank. Multiple first guide plates and multiple second guide plates are fixedly installed on the top wall of the raw material mixing tank. A discharge pipe is fixedly installed at the bottom of the raw material mixing tank. A valve is fixedly installed on the discharge pipe. The bottom end of the discharge pipe is connected to a screw feeder via a heat-resistant pipe. Multiple microwave generators are installed outside the cylinder of the screw feeder.

[0006] Preferably, the first guide plate is located below the corresponding feed pipe, and the second guide plate is located below the first guide plate; Preferably, both the first guide plate and the second guide plate are inclined downward at 45°~60°, and the positions of the first guide plate and the second guide plate are staggered. The above two settings enable the raw materials to be initially mixed in this part, which facilitates smoother subsequent preparation.

[0007] Preferably, a plurality of crushing cones are fixedly installed on the side of the stirring blade, and the crushing cones are conical in shape; This setting can break up agglomerated particles.

[0008] Preferably, a discharge pipe is fixedly installed at the discharge end of the screw feeder, and a temperature sensor is also fixedly installed on the discharge end cylinder of the screw feeder. The discharge pipe in this setting is used for normal discharge operation, and the temperature sensor in this setting can perform temperature detection operation.

[0009] Preferably, the screw feeder has two symmetrical microwave generating sleeves installed on its cylinder, and the microwave generator is fixedly installed on the inner wall of the microwave generating sleeve. This setup allows the microwave generator to be protected internally using a microwave generator sleeve.

[0010] Preferably, the microwave energy generated by the microwave generator radiates into the screw feeder, heating the raw materials inside the screw feeder through the penetrability of microwaves, and an outer insulation sleeve is provided on the outside of the microwave generator sleeve; This feature allows the outer insulation sleeve to provide insulation.

[0011] Preferably, a side fixing plate is fixedly installed on the side of the microwave generator sleeve, and the two corresponding side fixing plates are detachably connected by fastening screws.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the combination of a raw material mixing tank and a screw feeder, allows the raw materials to enter through the feed pipe, where they are initially mixed by the first and second guide plates, and then fully mixed by the stirring blades driven by the stirring motor. Subsequently, the raw materials are continuously conveyed through the discharge pipe and the heat-resistant pipe into the screw feeder, achieving continuous feeding and discharging. This solves the problem of low production efficiency in traditional intermittent devices and meets the needs of large-scale industrial production.

[0013] 2. This utility model sets up multiple microwave generators on the outside of the screw feeder. The microwave energy penetrates the cylinder to heat the raw materials inside evenly. Combined with the tumbling during the screw feeding process, the raw materials are heated evenly. The crushing cone on the stirring blades can break up agglomerated particles, further ensuring the uniformity of product particle size. This solves the product quality problems caused by uneven mixing of raw materials and poor heating uniformity, and achieves the effect of improving the quality of nano zinc oxide products.

[0014] 3. This utility model protects the microwave generator with a microwave generating sleeve, and the outer insulation sleeve reduces heat loss and improves energy utilization. The microwave generating sleeve is detachably connected by a side fixing plate, which facilitates maintenance and replacement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is one of the partial structural schematic diagrams of this utility model; Figure 3 This is the second partial structural schematic diagram of the present utility model; The meanings of the labels in the diagram are as follows: 1. Raw material mixing tank; 10. Feed pipe; 11. First guide plate; 12. Second guide plate; 13. Agitator motor; 131. Agitator shaft; 14. Agitator blades; 141. Crushing cone; 15. Discharge pipe; 151. Valve; 16. Heat-resistant pipe; 2. Screw feeder; 20. Discharge pipe; 21. Temperature sensor; 22. Microwave generator sleeve; 221. Side fixing plate; 23. Microwave generator; 24. Outer insulation sleeve; 3. Controller; 30. Support frame. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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] Please see Figures 1-3 This utility model provides a technical solution: a microwave continuous synthesis reactor for nano-zinc oxide, including a raw material mixing tank 1. Multiple feed pipes 10 are fixedly installed on the top of the raw material mixing tank 1 for feeding operations. A stirring motor 13 is fixedly installed at the center of the top of the raw material mixing tank 1. A vertically arranged stirring shaft 131 is fixedly installed at the end of the output shaft of the stirring motor 13. Multiple stirring blades 14 are fixedly installed on the stirring shaft 131. The stirring blades 14 are located inside the raw material mixing tank 1, so as to realize the high-speed rotation of the stirring blades 14 to further mix the raw materials and promote more thorough mixing of the raw materials.

[0018] In this embodiment, multiple first guide plates 11 and multiple second guide plates 12 are fixedly installed on the top wall of the raw material mixing tank 1. The first guide plates 11 are located below the corresponding feed pipe 10, and the second guide plates 12 are located below the first guide plates 11. Both the first guide plates 11 and the second guide plates 12 are inclined downward at 45°~60°. The positions of the first guide plates 11 and the second guide plates 12 are staggered, so that after the raw material falls from the feed pipe 10, it is guided and mixed layer by layer by the two-stage guide plates to achieve a preliminary mixing effect, laying the foundation for subsequent stirring operations.

[0019] like Figure 1 As shown, a discharge pipe 15 is fixedly installed at the bottom of the raw material mixing tank 1, and a valve 151 is fixedly installed on the discharge pipe 15. The bottom end of the discharge pipe 15 is connected to a screw feeder 2 through a heat-resistant pipe 16. Multiple microwave generators 23 are installed on the outside of the cylinder of the screw feeder 2 to realize the continuous conveying operation of raw materials using the screw feeder 2. The microwave energy generated by the microwave generator 23 radiates into the screw feeder 2, and the raw materials inside the screw feeder 2 are heated by the penetrating power of microwaves, thereby achieving the effect of heating the raw materials inside.

[0020] In this embodiment, an outer heat insulation sleeve 24 is provided on the outside of the microwave generator sleeve 22. The outer heat insulation sleeve 24 has the effect of heat preservation and prevents heat loss.

[0021] like Figure 1 and Figure 3 As shown, multiple crushing cones 141 are fixedly installed on the side of the stirring blade 14. The crushing cones 141 are conical in shape and can impact and crush agglomerated particles in the raw materials, ensuring that the raw materials are evenly dispersed and improving the mixing quality.

[0022] like Figure 1 As shown, the discharge end of the screw feeder 2 is fixedly equipped with a discharge pipe 20, which is used for normal discharge operation.

[0023] like Figure 1 and Figure 2 As shown, two symmetrical microwave generating sleeves 22 are detachably installed on the cylinder of the screw feeder 2. The microwave generator 23 is fixedly installed on the inner wall of the microwave generating sleeve 22. A side fixing plate 221 is fixedly installed on the side of the microwave generating sleeve 22. The two corresponding side fixing plates 221 are detachably connected by fastening screws, which facilitates the fixing, installation and disassembly of the microwave generating sleeve 22.

[0024] Specifically, a temperature sensor 21 is fixedly installed on the discharge end cylinder of the screw feeder 2, and a controller 3 is set on one side of the raw material mixing tank 1. A support frame 30 is fixedly installed at the bottom of the controller 3 and the support frame 30 is supported on an external base. The temperature value detected by the temperature sensor 21 is transmitted to the controller 3. By setting a corresponding threshold in the controller 3, when the temperature sensor 21 detects that the temperature has reached the threshold set in the controller 3, the controller 3 controls the corresponding microwave generator 23 to reduce the heating temperature.

[0025] It is worth noting that the screw feeder 2 can be made of a material with a stable molecular structure that does not absorb or absorbs very little microwave energy, which allows the microwaves generated by the microwave generator 23 to penetrate the cylinder wall smoothly and reach the internal reaction raw materials, ensuring that the microwave energy acts efficiently on the reaction system and guaranteeing heating uniformity and reaction efficiency; in addition, since the heating temperature is approximately 90 degrees Celsius, the screw feeder 2 can be made of high-temperature resistant materials to avoid being affected by temperature.

[0026] Finally, it should be noted that the stirring motor 13, microwave generator 23, temperature sensor 21, controller 3, corresponding control system, and external power supply involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle of this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0027] In use, the nano-zinc oxide microwave continuous synthesis reactor of this utility model adds raw materials to the raw material mixing tank 1 through multiple feed pipes 10. The raw materials fall to the first guide plate 11, and after being guided by an incline, they fall onto the staggered second guide plate 12 to complete the initial mixing. The stirring motor 13 is started, which drives the stirring shaft 131 and stirring blades 14 to rotate. The crushing cone 141 on the stirring blades 14 breaks up the agglomerated particles, so that the raw materials are fully mixed. Open valve 151 on discharge pipe 15, and the mixed raw material enters screw feeder 2 through heat-resistant pipe 16. Screw feeder 2 continuously conveys the raw material. At the same time, microwave generator 23 in microwave generator sleeve 22 radiates microwaves, which penetrate the cylinder of screw feeder 2 to heat the raw material. The outer heat insulation sleeve 24 reduces heat loss. Temperature sensor 21 detects the temperature in real time and transmits it to controller 3. When the temperature reaches the threshold, controller 3 controls microwave generator 23 to adjust the temperature, and the nano zinc oxide that has completed the reaction is discharged through discharge pipe 20.

[0028] 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 microwave continuous synthesis reactor for nano-zinc oxide, comprising a raw material mixing tank (1), characterized in that: Multiple feed pipes (10) are fixedly installed on the top of the raw material mixing tank (1). A stirring motor (13) is fixedly installed at the center of the top of the raw material mixing tank (1). A stirring shaft (131) is fixedly installed at the end of the output shaft of the stirring motor (13). Multiple stirring blades (14) are fixedly installed on the stirring shaft (131). The stirring blades (14) are located inside the raw material mixing tank (1). Multiple first guide plates (11) and multiple second guide plates (12) are fixedly installed on the top wall of the raw material mixing tank (1). A discharge pipe (15) is fixedly installed at the bottom of the raw material mixing tank (1). A valve (151) is fixedly installed on the discharge pipe (15). The bottom end of the discharge pipe (15) is connected to a screw feeder (2) through a heat-resistant pipe (16). Multiple microwave generators (23) are installed outside the cylinder of the screw feeder (2).

2. The microwave continuous synthesis reactor for nano-zinc oxide according to claim 1, characterized in that: The first guide plate (11) is located below the corresponding feed pipe (10), and the second guide plate (12) is located below the first guide plate (11).

3. The microwave continuous synthesis reactor for nano-zinc oxide according to claim 2, characterized in that: The first guide plate (11) and the second guide plate (12) are both inclined downward at 45°~60°, and the positions of the first guide plate (11) and the second guide plate (12) are staggered.

4. The microwave continuous synthesis reactor for nano-zinc oxide according to claim 1, characterized in that: Multiple crushing cones (141) are fixedly installed on the side of the stirring blade (14), and the crushing cones (141) are conical in shape.

5. The microwave continuous synthesis reactor for nano-zinc oxide according to claim 1, characterized in that: The discharge end of the screw feeder (2) is fixedly equipped with a discharge pipe (20), and a temperature sensor (21) is also fixedly installed on the discharge end cylinder of the screw feeder (2).

6. The microwave continuous synthesis reactor for nano-zinc oxide according to claim 1, characterized in that: The screw feeder (2) has two symmetrical microwave generator sleeves (22) detachably installed on its cylinder. The microwave generator (23) is fixedly installed on the inner wall of the microwave generator sleeve (22).

7. The microwave continuous synthesis reactor for nano-zinc oxide according to claim 6, characterized in that: The microwave energy generated by the microwave generator (23) radiates into the screw feeder (2), and the raw material inside the screw feeder (2) is heated by the penetrability of microwaves. An outer heat insulation sleeve (24) is provided on the outside of the microwave generator sleeve (22).

8. The microwave continuous synthesis reactor for nano-zinc oxide according to claim 7, characterized in that: A side fixing plate (221) is fixedly installed on the side of the microwave generator sleeve (22), and the two corresponding side fixing plates (221) are detachably connected by fastening screws.

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