Device for purifying OLED (Organic Light Emitting Diode) intermediate under assistance of inert gas

Abstract

The utility model belongs to the field of OLED (organic light emitting diode) intermediates, and particularly relates to a device for purifying OLED intermediates under the assistance of inert gas, which comprises a workbench, a tank body is arranged above the workbench, a top cover is mounted at the top end of the tank body, a feeding pipe is fixedly mounted on the top cover, a coating type heater is arranged on the outer side of the lower part of the tank body, and the coating type heater is connected with the feeding pipe. The bottom and the side edge of the tank body are wrapped by the wrapping type heater, the top cover is fixedly provided with a condensation pipe through a connecting pipe, and the condensation pipe is obliquely arranged on the side edge of the tank body; in the process of heating and purifying the OLED intermediate, materials are dispersed through the deflector rod, so that the materials are heated more uniformly, the sublimation efficiency is improved, and the purification speed is improved; and in addition, by arranging a condensation pipe and a plurality of inner pipes, the contact area of the gaseous organic compound and cooling water during heat exchange is increased, the cooling effect is further improved, and the gaseous organic compound can be effectively converted into a solid organic compound conveniently.

Description

Technical Field

[0001] The utility model relates to the field of OLED intermediates, in particular to a device for purifying OLED intermediates assisted by inert gas. Background Technique

[0002] Organic light-emitting diodes (OLEDs) have the advantages of flexibility, active emission, high efficiency, low-voltage driving, and easy preparation of large-area devices, and have received extensive attention. Organic light-emitting diodes are mainly applied in two aspects: one is for new displays, and the other is for solid-state lighting. The light-emitting material is the most core part of the OLED and largely determines the device efficiency and device life. Obtaining high-purity OLED materials is crucial.

[0003] Sublimation is a commonly used purification method and can be used for the purification of OLED intermediates. Sublimation refers to the process of directly converting a solid substance from a solid state to a gaseous state and then condensing it back to a solid state to achieve purification and separation.

[0004] Common sublimation purification devices do not have a structure for dispersing the OLED intermediates to be purified. Therefore, when purifying OLED intermediates, due to the excessive concentration of the OLED intermediates, the heating effect of the heater on the OLED intermediates is poor, resulting in a very slow heat transfer rate of the OLED intermediates, which further affects the purification speed of the OLED intermediates. Therefore, a device for purifying OLED intermediates assisted by inert gas is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the problem that common sublimation purification devices do not have a structure for dispersing the OLED intermediates to be purified. Therefore, when purifying OLED intermediates, due to the excessive concentration of the OLED intermediates, the heating effect of the heater on the OLED intermediates is poor, resulting in a very slow heat transfer rate of the OLED intermediates, which further affects the purification speed of the OLED intermediates. The utility model proposes a device for purifying OLED intermediates assisted by inert gas.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A device for purifying OLED intermediates assisted by inert gas according to the utility model includes a workbench, a tank body is arranged above the workbench, a top cover is installed at the top of the tank body, a feed pipe is fixedly installed on the top cover, a wrapped heater is arranged on the outer side of the lower part of the tank body, and the bottom and side of the tank body are wrapped by the wrapped heater. A condenser tube is fixedly installed on the top cover through a connecting tube, and the condenser tube is obliquely arranged on the side of the tank body.

[0007] Preferably, a motor is fixedly installed in the middle of the top end of the top cover. A rotating rod is fixedly installed at the output end of the motor. The rotating rod extends downward to the bottom of the tank body. A bottom plate is rotatably installed at the bottom end of the rotating rod. An inclined side edge is integrally formed at the top edge of the bottom plate. The side walls of the bottom plate and the side edge are both attached to the inner wall of the tank body. The bottom end of the bottom plate is attached to the bottom of the tank body. A connecting rod is fixedly connected to the side wall of the rotating rod. A plurality of dial rods are fixedly connected to the bottom end of the connecting rod.

[0008] Preferably, side plates are symmetrically and fixedly connected to the inner sides of both ends of the condensing pipe. A plurality of inner pipes are fixedly installed between the two side plates at both ends. Through holes communicating with the inner pipes are formed in the side plates. A water inlet pipe is fixedly connected to the lower side wall of the condensing pipe. A water outlet pipe is fixedly connected to the upper side wall of the condensing pipe. A sealing plate is fixedly connected to the end of the upper part of the condensing pipe. The end of the connecting pipe away from the top cover is fixedly installed on the connector fixedly connected to the sealing plate.

[0009] Preferably, a heat insulation plate is fixedly installed on the side wall of the side plate adjacent to the sealing plate.

[0010] Preferably, an air inlet pipe is fixedly installed on the top cover. The air inlet pipe is connected to an external inert gas supply system.

[0011] Preferably, a pressure gauge is fixedly installed on the top cover.

[0012] Preferably, a lifting ring is fixedly installed on the side of the top cover.

[0013] Preferably, a discharge pipe is fixedly installed in the middle of the bottom of the tank body.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. By setting structures such as the tank body, the top cover, the wrapped heater, the motor, the rotating rod, the bottom plate, the connecting plate, and the dial rod, during the heating process, the motor is synchronously used to drive the rotating rod to rotate. The rotating rod drives the connecting plate and the dial rod to rotate. The material is dispersed by the dial rod, which is beneficial to the material being heated more evenly, improving the sublimation efficiency, and thus enhancing the purification speed.

[0016] 2. Through structures such as the condensing pipe, the side plates, the inner pipes, and the heat insulation plate, the gaseous organic compound generated by sublimation is introduced into the cavity between the sealing plate and the side plates through the connecting pipe. Then, it is respectively introduced into the inner pipes through the through holes. This can increase the contact area when the gaseous organic compound exchanges heat with the cooling water, thereby enhancing the cooling effect and facilitating the effective conversion of the gaseous organic compound into a solid organic compound. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the first embodiment;

[0019] Figure 2 It is a partial cross-sectional view of the first embodiment;

[0020] Figure 3 It is a cross-sectional view of the condenser tube of the first embodiment;

[0021] Figure 4 It is a schematic diagram of the cold insulation plate structure of the first embodiment;

[0022] Figure 5 For the first embodiment Figure 2 It is an enlarged schematic diagram of the structure at position A.

[0023] In the figure: 1, workbench; 2, tank body; 3, top cover; 4, wrapped heater; 5, condenser tube; 6, bottom plate; 7, side edge; 8, feed pipe; 9, inlet pipe; 10, pressure gauge; 11, connecting pipe; 12, motor; 13, rotating rod; 14, connecting rod; 15, dial rod; 16, discharge pipe; 17, side plate; 18, sealing plate; 19, cold insulation plate; 20, inner tube; 21, water inlet pipe; 22, water outlet pipe; 23, lifting ring. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] The first embodiment

[0026] Please refer to Figures 1-5As shown in the figure, a device for purifying OLED intermediates assisted by inert gas includes a workbench 1. Above the workbench 1, there is a tank body 2. At the top of the tank body 2, a top cover 3 is installed. On the top cover 3, a feed pipe 8 is fixedly installed. On the outer side of the lower part of the tank body 2, a wrapped heater 4 is arranged, and the bottom and side of the tank body 2 are wrapped by the wrapped heater 4. On the top cover 3, a condensing pipe 5 is fixedly installed through a connecting pipe 11, and the condensing pipe 5 is inclined and arranged on the side of the tank body 2. During operation, a solid material mainly containing organic compounds of OLED intermediates is added into the tank body 2. Then, the tank body 2 is heated to a specified temperature by the wrapped heater 4, so that the organic compounds serving as OLED intermediates in the solid material sublimate inside the tank body 2. The gaseous organic compounds generated by sublimation enter the condensing pipe 5 through the connecting pipe 11, and the gaseous organic compounds are cooled by the condensing pipe 5 to be transformed into solid organic compounds, which are finally collected.

[0027] In the middle of the top of the top cover 3, a motor 12 is fixedly installed. On the output end of the motor 12, a rotating rod 13 is fixedly installed. The rotating rod 13 extends downward to the bottom of the tank body 2. At the bottom end of the rotating rod 13, a bottom plate 6 is rotatably installed. At the top edge of the bottom plate 6, an inclined side edge 7 is integrally formed. The side walls of the bottom plate 6 and the side edge 7 are both in contact with the inner wall of the tank body 2, and the bottom end of the bottom plate 6 is in contact with the bottom of the tank body 2. On the side wall of the rotating rod 13, a connecting rod 14 is fixedly connected. At the bottom end of the connecting rod 14, a plurality of stirring rods 15 are fixedly connected. During operation, the solid material is placed on the top of the bottom plate 6. By setting the side edge 7, the solid material is gathered towards the middle of the bottom plate 6. During heating, the motor 12 is synchronously used to drive the rotating rod 13 to rotate. The rotating rod 13 drives the connecting plate and the stirring rods 15 to rotate. The material is dispersed by the stirring rods 15, which is beneficial to the material being heated more evenly and improving the sublimation efficiency.

[0028] The inner sides of both ends of the condenser 5 are symmetrically fixedly connected with side plates 17, and multiple groups of inner tubes 20 are fixedly installed in the middle of the side plates 17 at both ends. The side plates 17 are provided with through holes connected to the inner tubes 20. The lower side wall of the condenser 5 is fixedly connected with a water inlet pipe 21, and the upper side wall of the condenser 5 is fixedly connected with a water outlet pipe 22. The upper end of the condenser 5 is fixedly connected with a sealing plate 18, and the end of the connecting pipe 11 away from the top cover 3 is fixedly installed on the connecting head fixedly connected to the sealing plate 18; when working, the cold water introduced from the water inlet pipe 21 is Cooling water fills the inner cavity of the condenser 5, and the cooling water is discharged from the outlet pipe 22. The water inlet pipe 21 and the outlet pipe 22 are respectively connected to the external refrigerator to form a cycle, so that the cooling water is kept at a suitable temperature. The gaseous organic compound is introduced into the cavity between the sealing plate 18 and the side plate 17 through the connecting pipe 11, and then introduced into the inner tube 20 through the through holes. This can increase the contact area between the gaseous organic compound and the cooling water during heat exchange, thereby improving the cooling effect and facilitating the effective conversion of the gaseous organic compound into a solid organic compound.

[0029] A cold-isolating plate 19 is fixedly mounted on the side wall adjacent to the side plate 17 and the sealing plate 18; during operation, it is convenient to prevent the gaseous organic compounds from exchanging heat with the cooling water outside the side plate 17, so that the gaseous organic compounds can only exchange heat in the inner tube 20, which is convenient for the subsequent collection of solid organic compounds.

[0030] An air inlet pipe 9 is fixedly mounted on the top cover 3, and the air inlet pipe 9 is connected to an external inert gas supply system; when working, an appropriate amount of inert gas is injected into the tank body 2 through the air inlet pipe 9, and the addition of inert gas can effectively protect the organic matter from the influence of oxygen and other impurities. In the sublimation process, by using inert gas to form an inert atmosphere, the presence of oxygen can be reduced, the risk of organic matter oxidation can be reduced, and the chemical stability of the organic matter can be maintained; in addition, in the sublimation process, the inflow and outflow of inert gas can be used to maintain the pressure balance of the system. By controlling the flow and pressure of the inert gas, the stability and consistency of the sublimation process can be ensured.

[0031] A pressure gauge 10 is fixedly mounted on the top cover 3 , which is convenient for monitoring the air pressure inside the tank body 2 during operation.

[0032] A lifting ring 23 is fixedly installed on the side of the top cover 3; when working, the connecting pipe 11 and the top cover 3 are first separated, and then the top cover 3 is lifted upward through the lifting ring 23, thereby driving the rotating rod 13, the bottom plate 6 and other structures to be lifted upward to the outside of the tank body 2, so as to facilitate cleaning of impurities remaining on the bottom plate 6. At the same time, the bottom plate 6 and the side edge 7 are convenient for cleaning the inner wall of the tank body 2 during the rising process.

[0033] Embodiment 2

[0034] See alsoFigure 2 As shown, as another implementation manner of the present utility model compared with the first comparative example, a discharge pipe 16 is fixedly installed in the middle of the bottom of the tank body 2; during operation, after the bottom plate 6 is taken out, the inside of the tank body 2 can be flushed and cleaned, and the waste water after cleaning is discharged from the discharge pipe 16, which is convenient for thoroughly cleaning the inside of the tank body 2.

[0035] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0036] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. An inert gas-assisted purification device for OLED intermediates, characterized in that: The invention comprises a workbench (1), a tank body (2) is arranged above the workbench (1), a top cover (3) is installed at the top of the tank body (2), a feed pipe (8) is fixedly installed on the top cover (3), a wrap-around heater (4) is arranged on the outer side of the lower part of the tank body (2), the bottom and the side of the tank body (2) are wrapped by the wrap-around heater (4), a condenser (5) is fixedly installed on the top cover (3) through a connecting pipe (11), and the condenser (5) is arranged obliquely on the side of the tank body (2).

2. The device for purifying OLED intermediates by inert gas according to claim 1, characterized in that: A motor (12) is fixedly mounted in the middle of the top end of the top cover (3); a rotating rod (13) is fixedly mounted on the output end of the motor (12); the rotating rod (13) extends downward to the bottom of the tank body (2); a bottom plate (6) is rotatably mounted on the bottom end of the rotating rod (13); an inclined side edge (7) is integrally formed at the top edge of the bottom plate (6); the side walls of the bottom plate (6) and the side edge (7) are both in contact with the inner wall of the tank body (2); the bottom end of the bottom plate (6) is in contact with the bottom of the tank body (2); a connecting rod (14) is fixedly connected to the side wall of the rotating rod (13); and a plurality of shifting rods (15) are fixedly connected to the bottom end of the connecting rod (14).

3. The device for purifying OLED intermediates by inert gas according to claim 2, characterized in that: The inner sides of both ends of the condenser (5) are symmetrically fixedly connected with side plates (17), and a plurality of groups of inner tubes (20) are fixedly installed in the middle of the side plates (17) at both ends. The side plates (17) are provided with through holes connected to the inner tubes (20). The lower side wall of the condenser (5) is fixedly connected with a water inlet pipe (21), and the upper side wall of the condenser (5) is fixedly connected with a water outlet pipe (22). The upper end of the condenser (5) is fixedly connected with a sealing plate (18), and the end of the connecting pipe (11) away from the top cover (3) is fixedly installed on a connecting head fixedly connected to the sealing plate (18).

4. The device for purifying OLED intermediates by inert gas according to claim 3, characterized in that: A cold insulation plate (19) is fixedly mounted on the side wall adjacent to the side plate (17) and the sealing plate (18).

5. The device for purifying OLED intermediates by inert gas according to claim 4, characterized in that: An air intake pipe (9) is fixedly mounted on the top cover (3), and the air intake pipe (9) is connected to an external inert gas supply system.

6. The device for purifying OLED intermediates by inert gas according to claim 5, characterized in that: A pressure gauge (10) is fixedly mounted on the top cover (3).

7. The device for purifying OLED intermediates by inert gas according to claim 6, characterized in that: A lifting ring (23) is fixedly mounted on the side of the top cover (3).

8. The device for purifying OLED intermediates by inert gas according to claim 7, characterized in that: A discharge pipe (16) is fixedly installed in the middle of the bottom of the tank body (2).

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