CN215087011U - Quantum dot synthesis reaction device and quantum dot synthesis reaction system capable of being separated in situ - Google Patents

Abstract

The utility model provides a but quantum dot synthetic reaction device and quantum dot synthetic reaction system of normal position separation relates to quantum dot synthesis equipment field. This but quantum dot synthetic reaction device of normal position separation includes rabbling mechanism, intensification reaction mechanism and normal position separating mechanism, the discharge gate of rabbling mechanism and intensification reaction mechanism's feed inlet intercommunication, intensification reaction mechanism's discharge gate and normal position separating mechanism's feed inlet intercommunication, normal position separating mechanism includes cylinder and slewing mechanism, the inlet has been seted up to the bottom of cylinder, its top is provided with heavy liquid export and light liquid export, be provided with the inner tube in the cylinder, the bottom of inner tube and the lower part intercommunication of cylinder, the top and the light liquid export intercommunication of inner tube, heavy liquid export and the upper portion intercommunication of cylinder. The method can directly separate the nano materials such as quantum dots and the like from the reaction liquid, and reduces errors caused by manual operation. The stirring and heating reactions are separated from each other, so that the temperature can be quickly increased and decreased under the condition of uniform stirring.

Description

Quantum dot synthesis reaction device and quantum dot synthesis reaction system capable of being separated in situ

Technical Field

The utility model relates to a quantum dot synthesis equipment field particularly, relates to a but quantum dot synthesis reaction unit and quantum dot synthesis reaction system of normal position separation.

Background

Quantum dots are an important low-dimensional semiconductor material, and the size of each of the three dimensions is not larger than twice the exciton bohr radius of the corresponding semiconductor material. Quantum dots are generally spherical or spheroidal, often between 2-20nm in diameter, and an important parameter for quantum dot quality assessment of particle uniformity. In the prior art, after the quantum dot reaction is finished, artificial separation is needed, and errors are easily caused.

In view of this, the present application is specifically made.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but quantum dot synthesis reaction unit and quantum dot synthesis reaction system of normal position separation, it can directly separate nano-material such as quantum dot from the reaction liquid, has reduced the error that manual operation arouses.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a but quantum dot synthetic reaction unit of normal position separation, it includes rabbling mechanism, intensification reaction mechanism and normal position separating mechanism, the discharge gate of rabbling mechanism with intensification reaction mechanism's feed inlet intercommunication, intensification reaction mechanism's discharge gate with normal position separating mechanism's feed inlet intercommunication, normal position separating mechanism includes cylinder and slewing mechanism, the inlet has been seted up to the bottom of cylinder, its top is provided with heavy liquid export and light liquid export, be provided with the inner tube in the cylinder, the bottom of inner tube with the lower part intercommunication of cylinder, the top of inner tube with light liquid export intercommunication, heavy liquid export with the upper portion intercommunication of cylinder.

In an optional implementation manner, the in-situ separable quantum dot synthesis reaction device further comprises a constant temperature circulation mechanism, the constant temperature circulation mechanism comprises a liquid containing groove, a liquid inlet pipe and a liquid outlet pipe, a bath sleeve is sleeved outside the stirring mechanism, two ends of the liquid inlet pipe are respectively communicated with the liquid containing groove and the lower portion of the bath sleeve, and two ends of the liquid outlet pipe are respectively communicated with the liquid containing groove and the upper portion of the bath sleeve.

In an optional embodiment, the temperature-raising reaction mechanism comprises a heating zone and a reaction pipeline located in the heating zone, and two ends of the reaction pipeline are respectively communicated with the discharge port and the liquid inlet of the stirring mechanism.

In alternative embodiments, the reaction conduit is corrugated, serrated or helical.

In an alternative embodiment, the reaction conduit has a length of 20 to 200cm and a tube diameter of 4 to 25 mm.

In an alternative embodiment, the heating zone is of the type electric, oil or microwave heating.

In an alternative embodiment, the stirring mechanism is provided with a pressure pipe.

In an alternative embodiment, the stirring mechanism is a stainless steel stirring mechanism, a glass stirring mechanism or an enamel stirring mechanism.

In an alternative embodiment, the in-situ separable quantum dot synthesis reaction device further comprises a collection tank, and a feed inlet of the collection tank is communicated with the heavy liquid outlet.

In a second aspect, the present invention provides a quantum dot synthesis reaction system, which includes the in-situ separable quantum dot synthesis reaction apparatus according to any one of the above embodiments.

The embodiment of the utility model provides a beneficial effect is:

the application provides a but quantum dot synthesis reaction unit of normal position separation connects an normal position separating mechanism through the discharge gate department at intensification reaction mechanism, and this normal position separating mechanism can directly carry out direct separation with the reaction liquid that the reaction was accomplished, avoids collecting reaction liquid and separates artifical once more, and this normal position separating mechanism's setting can be with the direct separation from reaction liquid of nanomaterials such as quantum dot, has reduced the error that manual operation arouses. In addition, in this application, still set up rabbling mechanism and intensification reaction mechanism alone, through stirring and heating reaction alternate segregation, under the condition of guaranteeing the stirring, can rise and fall the temperature fast again. Not only meets the requirement of the high temperature condition on the uniformity of the solution in the process of quantum dot synthesis, but also can quickly raise the temperature of a reaction system to be more than 300 ℃ in a very short time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a quantum dot synthesis reaction device capable of in-situ separation according to an embodiment of the present invention.

Icon: 100-a quantum dot synthesis reaction device capable of in-situ separation; 110-constant temperature circulation mechanism; 111-a liquid containing tank; 112-a liquid inlet pipe; 113-a liquid outlet pipe; 120-a stirring mechanism; 121-stirring shaft; 122-stirring blades; 123-a pressurizing port; 124-a discharge hole; 125-a first valve; 126-a second valve; 127-bath cover; 130-a temperature-rising reaction mechanism; 131-a heating zone; 132-a reaction conduit; 133-a third valve; 140-an in-situ separation mechanism; 141-a separation cylinder; 142-a rotating mechanism; 143-a liquid inlet; 144-heavy liquid outlet; 145-light liquid outlet; 146-an inner barrel; 147-a fourth valve; 148-a fifth valve; 150-collection tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1, the present embodiment provides an in-situ separable quantum dot synthesis reaction apparatus 100, which includes a constant temperature circulation mechanism 110, a stirring mechanism 120, a temperature-raising reaction mechanism 130, an in-situ separation mechanism 140, and a collection tank 150. The constant temperature circulation mechanism 110 is communicated with the stirring mechanism 120 to heat the materials in the stirring mechanism 120, the discharge port 124 of the stirring mechanism 120 is communicated with the feed port of the temperature-rising reaction mechanism 130, the discharge port 124 of the temperature-rising reaction mechanism 130 is communicated with the feed port of the in-situ separation mechanism 140, and the discharge port 124 of the in-situ separation mechanism 140 is communicated with the feed port of the collection tank 150.

Next, the structures of the constant temperature circulation mechanism 110, the stirring mechanism 120, the temperature-raising reaction mechanism 130, the in-situ separation mechanism 140, and the collection tank 150, and the connection relationship thereof will be described in detail.

Constant temperature circulation mechanism 110 is mainly used for providing certain temperature for rabbling mechanism 120, can effectively avoid the material temperature in rabbling mechanism 120 low excessively and take place to condense, and the condition that increases the stirring degree of difficulty takes place. In addition, if the temperature of the material in the stirring mechanism 120 is too high, the constant temperature circulating mechanism 110 can also play a role in reducing the temperature, so that the reaction can be effectively prevented from being carried out in advance due to the too high temperature of the material. Specifically, the constant temperature circulation mechanism 110 in the present application includes a liquid containing tank 111, a liquid inlet pipe 112 and a liquid outlet pipe 113, where the liquid containing tank 111 is used for containing a constant temperature liquid, and the liquid inlet pipe 112 and the liquid outlet pipe 113 are respectively communicated with the liquid containing tank 111.

Rabbling mechanism 120 mainly used stirs the misce bene under normal atmospheric temperature or low temperature condition to the material, in this application, is provided with the (mixing) shaft 121 that is used for realizing the stirring and installs stirring vane 122 on (mixing) shaft 121 in the rabbling mechanism 120. Further, a pressurizing port 123 and a discharging port 124 are arranged at the upper part of the stirring mechanism 120, and a first valve 125 is arranged on the pipeline of the pressurizing port 123; the pressure port 123 can introduce inert gas into the stirring mechanism 120 through the first valve 125, so as to provide a certain pressure for the stirring mechanism 120, which is beneficial to the pressurized discharge of the materials in the stirring mechanism 120, and in addition, the introduced inert gas enters the bottom of the stirring mechanism 120 to mix with the reaction liquid, so as to protect the reaction liquid. The outlet 124 of the stirring mechanism 120 is provided with a second valve 126, which can control and input the uniformly mixed inert gas and the reaction liquid to the next stage.

In this application, the outer side of the stirring mechanism 120 is further provided with a bath sleeve 127, two ends of the liquid inlet pipe 112 are respectively communicated with the lower parts of the liquid containing tank 111 and the bath sleeve 127, and two ends of the liquid outlet pipe 113 are respectively communicated with the upper parts of the liquid containing tank 111 and the bath sleeve 127. The liquid with constant temperature enters the bath sleeve 127 through the liquid inlet pipe 112, and the temperature is transferred to the material in the stirring mechanism 120 through heat transfer, so that the material is heated or cooled.

The stirring mechanism 120 may be a conventional stirring mechanism 120 such as a stainless steel stirring mechanism 120, a glass stirring mechanism 120, an enamel stirring mechanism 120, or a stirring mechanism 120 made of other materials.

Intensification reaction mechanism 130 mainly used carries out rapid heating to the material of misce bene, specifically, in this application, intensification reaction mechanism 130 includes the zone of heating 131 and is located the reaction tube 132 of the zone of heating 131, the zone of heating 131 lasts for reaction tube 132 heats, make reaction tube 132 be in the high temperature heating state always, the temperature is more than 300 ℃, the material after the misce bene of following rabbling mechanism 120 discharge gets into in reaction tube 132, the material can realize quick intensification, be favorable to forming the quantum dot that the homogeneity is good and of high quality. The heating zone 131 in this application can adopt heating methods such as electric heating, oil heating, microwave heating to realize heating the reaction pipeline 132. Further, the length, thickness, shape of the bent disk, etc. of the reaction channel 132 play a crucial role in the initiation of the synthesis of quantum dots. In the present application, the reaction conduit 132 is in a wave shape, a zigzag shape, or a spiral shape. The length of the reaction pipeline 132 is 20-200cm, and the pipe diameter is 4-25 mm. The inventor researches and discovers that quantum dots with better uniformity and quality can be prepared by adopting the reaction pipeline 132 with the shape, the length and the pipe diameter. A third valve 133 is also provided at the position of the discharge port 124 of the temperature-raising reaction mechanism 130, and is mainly used for the purpose of inputting the material controllability of the reaction completion to the next stage.

In the process of synthesizing the quantum dots, the synthesis of the quantum dot cores is generally completed instantly within a few seconds of the rapid injection of materials under the condition of high temperature (about 300 ℃), so that the mixing uniformity of different materials plays an important role in the quality of the quantum dot cores; secondly, the rapid heating rate and cooling rate not only affect the particle uniformity of the quantum dots, but also have important influence on the growth uniformity and quality of the shell layer in the shell layer coating process of the quantum dots. However, in the existing reactor, stirring and reaction heating are integrated in the same cylinder, which can result in incomplete stirring or too slow heating and cooling speed. In the application, the stirring mechanism 120 and the heating reaction mechanism 130 are separated from each other, so that the stirring can be rapidly carried out under the condition of uniform stirring.

The in-situ separation mechanism 140 is used for directly separating the quantum dots and other nano materials from the reaction solution, thereby reducing errors caused by manual operation. Specifically, the in-situ separation mechanism 140 includes a separation cylinder 141 and a rotation mechanism 142, a liquid inlet 143 is provided at the bottom of the separation cylinder 141, a heavy liquid outlet 144 and a light liquid outlet 145 are provided at the top of the separation cylinder 141, an inner cylinder 146 is provided in the separation cylinder 141, the bottom of the inner cylinder 146 is communicated with the lower portion of the separation cylinder 141, the top of the inner cylinder 146 is communicated with the light liquid outlet 145, and the heavy liquid outlet 144 is communicated with the upper portion of the separation cylinder 141. In this application, the heavy liquid outlet 144 is provided with a fourth valve 147, and the light liquid outlet 145 is provided with a fifth valve 148.

In this application, the material after the complete reaction of the temperature-raising reaction mechanism 130 enters the separation cylinder 141 from the liquid inlet 143 at the bottom of the separation cylinder 141, the rotating mechanism 142 drives the separation cylinder 141 to rotate at a high speed, a strong centrifugal force field is formed inside the separation cylinder 141, the reacted material is rapidly driven to rotate at the same speed as the separation cylinder 141, so that the material liquid is layered according to the density difference of different components, specifically, the centrifugal force of the separation cylinder 141 causes the heavy liquid in the reacted material to flow upwards along the inner wall of the reaction cylinder, and the light liquid in the reacted material flows upwards along the inner wall of the inner cylinder 146 arranged in the reaction cylinder, and is finally discharged respectively.

The collecting tank 150 is mainly used for collecting the material discharged from the in-situ separation mechanism 140 and then performing subsequent processing, and specifically, a feed inlet of the collecting tank 150 of the present application is communicated with the heavy liquid outlet 144 of the in-situ separation mechanism 140.

The first valve 125, the second valve 126, the third valve 133, the fourth valve 147, and the fifth valve 148 in this application may each be selected from a ball valve, a butterfly valve, a solenoid valve, an electric ball valve, an electric butterfly valve, a pneumatic ball valve, or a pneumatic butterfly valve.

The working principle of the quantum dot synthesis reaction device 100 capable of in-situ separation is as follows: putting raw materials into a stirring mechanism 120, starting a constant-temperature circulating mechanism 110, maintaining the raw materials in the stirring mechanism 120 to be uniformly mixed at a certain temperature, after the raw materials are mixed for a certain time, enabling the solution to be uniform, starting a pressurizing port 123 of the stirring mechanism 120, maintaining a certain pressure in the stirring mechanism 120, opening a second valve 126 of the stirring mechanism 120, enabling the precursor to be in a high-temperature state in a controlled manner by adjusting a valve of the stirring mechanism 120, controlling the reaction temperature in a reaction pipeline 132 of the heating reaction mechanism 130 by adjusting a heating zone 131 of the heating reaction mechanism 130 in the early stage, further controlling the reaction time by adjusting the length, the thickness, the bent disc shape and the like of the reaction pipeline 132, and after the reaction is finished, starting a third valve 133 of the heating reaction mechanism 130 to introduce the reaction solution into an in-situ separation mechanism 140, the reaction liquid enters the separation cylinder 141 from a liquid inlet 143 at the bottom of the separation cylinder 141, the rotating mechanism 142 drives the separation cylinder 141 to rotate at a high speed, a strong centrifugal force field is formed inside the separation cylinder 141, the reacted material is rapidly driven to rotate at the same speed as the separation cylinder 141 by centrifugal force to cause heavy liquid containing quantum dots in the reacted material to flow upwards along the inner wall of the reaction cylinder and to be discharged from a heavy liquid outlet 144, and light liquid in the reacted material flows upwards along the inner wall of an inner cylinder 146 arranged in the reaction cylinder and to be discharged from a light liquid outlet 145. The product discharged from the heavy liquid outlet 144 enters the collection tank 150 to be collected and waits for the reprocessing of the reaction liquid.

In addition, the present application also provides a quantum dot reaction synthesis system, which includes the above quantum dot synthesis reaction apparatus 100 capable of in-situ separation. The quantum dot reaction synthesis system further comprises a conventional feeding device, a control device or an inert gas storage device, and the like, which are not described in the present application.

To sum up, the quantum dot synthesis reaction device 100 capable of in-situ separation provided by the present application connects the in-situ separation mechanism 140 at the discharge port 124 of the temperature rise reaction mechanism 130, the in-situ separation mechanism 140 can directly separate the reaction solution after the reaction is completed, the reaction solution is prevented from being manually separated again after being collected, the in-situ separation mechanism 140 can directly separate the nano materials such as quantum dots from the reaction solution, and the error caused by manual operation is reduced. In addition, in this application, still set up rabbling mechanism 120 and intensification reaction mechanism 130 alone, through will stir and heating reaction alternate segregation, guarantee again can fast rise and fall the temperature under the even condition of stirring. Not only meets the requirement of the high temperature condition on the uniformity of the solution in the process of quantum dot synthesis, but also can quickly raise the temperature of a reaction system to be more than 300 ℃ in a very short time.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a but quantum dot synthetic reaction unit of normal position separation which characterized in that, it includes rabbling mechanism, intensification reaction mechanism and normal position separating mechanism, the discharge gate of rabbling mechanism with the feed inlet intercommunication of intensification reaction mechanism, the discharge gate of intensification reaction mechanism with the feed inlet intercommunication of normal position separating mechanism, normal position separating mechanism includes a separator and slewing mechanism, the inlet has been seted up to the bottom of separator, and its top is provided with heavy liquid export and light liquid export, be provided with the inner tube in the separator, the bottom of inner tube with the lower part intercommunication of separator, the top of inner tube with light liquid export intercommunication, heavy liquid export with the upper portion intercommunication of separator.

2. The in-situ separable quantum dot synthesis reaction device according to claim 1, further comprising a constant temperature circulation mechanism, wherein the constant temperature circulation mechanism comprises a liquid containing tank, a liquid inlet pipe and a liquid outlet pipe, a bath sleeve is sleeved outside the stirring mechanism, two ends of the liquid inlet pipe are respectively communicated with lower parts of the liquid containing tank and the bath sleeve, and two ends of the liquid outlet pipe are respectively communicated with upper parts of the liquid containing tank and the bath sleeve.

3. The in-situ separable quantum dot synthesis reaction device according to claim 1, wherein the temperature-raising reaction mechanism comprises a heating zone and a reaction pipeline located in the heating zone, and two ends of the reaction pipeline are respectively communicated with the discharge port and the liquid inlet of the stirring mechanism.

4. The in-situ separable quantum dot synthesis reaction device according to claim 3, wherein the reaction conduit is in a wave shape, a zigzag shape or a spiral shape.

5. The in-situ separable quantum dot synthesis reaction device according to claim 3, wherein the reaction pipeline has a length of 20-200cm and a pipe diameter of 4-25 mm.

6. The in-situ separable quantum dot synthesis reaction device according to claim 3, wherein the heating type of the heating zone is electric heating, oil heating or microwave heating.

7. The in-situ separable quantum dot synthesis reaction device according to any one of claims 1 to 6, wherein the stirring mechanism is provided with a pressure pipe.

8. The in-situ separable quantum dot synthesis reaction device according to any one of claims 1 to 6, wherein the stirring mechanism is a stainless steel stirring mechanism, a glass stirring mechanism or an enamel stirring mechanism.

9. The in-situ separable quantum dot synthesis reaction device according to any one of claims 1 to 6, wherein the in-situ separable quantum dot synthesis reaction device further comprises a collection tank, and a feed inlet of the collection tank is communicated with the heavy liquid outlet.

10. A quantum dot synthesis reaction system comprising the in-situ separable quantum dot synthesis reaction apparatus according to any one of claims 1 to 9.

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