High-purity ethyl acetate refining device

Abstract

The utility model relates to the technical field of acetic acid ethanol preparation, in particular to a high-purity ethyl acetate refining device which comprises a base, a preparation box is fixed on one side of the top of the base, a heating copper plate is fixed at the bottom of the base through screws, a cover plate is mounted at the top of the preparation box, and a stirring assembly is mounted in the cover plate. And a recycling suction pipe is fixed to one side of the quantitative tank through a fixing rod, one end of the recycling suction pipe is in sealed connection with a piston rod assembly through threads, a three-way valve is installed at one end of the recycling suction pipe, and one side of the three-way valve communicates with a recycling pipe. According to the chemical material recycling device, chemical materials stored in the recycling suction pipe are squeezed into an original storage container through the recycling pipe by converting the outlet direction of the three-way valve, so that redundant chemical materials are recycled, the situation that the chemical materials are splashed when being recycled by experimenters is avoided, the personal safety of the experimenters is guaranteed, and the experiment efficiency is improved. Meanwhile, pollution and loss of chemical materials are reduced.

Description

Technical Field

[0001] This utility model relates to the field of acetic acid ethanol preparation technology, specifically a high-purity ethyl acetate refining device. Background Technology

[0002] Ethanol acetate is an ester compound formed by the esterification reaction of acetic acid and ethanol, and is commonly known as ethyl acetate.

[0003] In the routine laboratory preparation of ethyl acetate, researchers typically need to mix various chemical reagents in multiple test tubes. Due to the lack of a precise quantitative control system in current procedures, inaccurate reagent ratios are common. When reagent excess occurs, the operating procedure requires the excess liquid reagent to be returned to the original storage container. This process poses significant operational safety risks: firstly, liquid reagents are prone to splashing during transfer, potentially causing skin contact injury or respiratory irritation to researchers; secondly, open return-to-containment operations can lead to both reagent contamination and evaporation losses.

[0004] Therefore, a high-purity ethyl acetate refining device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a high-purity ethyl acetate refining device to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: A high-purity ethyl acetate refining device includes a base, a preparation box fixed to one side of the top of the base, a heating copper plate fixed to the bottom of the base by screws, the heating copper plate cooperating with the preparation box, a cover plate installed on the top of the preparation box, a stirring assembly installed inside the cover plate, a steam pipe installed inside the cover plate, and a first fixing plate and a second fixing plate fixed to one side of the preparation box. Multiple injection tubes are fixed at equal intervals inside the fixed plate. Multiple metering tanks are fixed at equal intervals inside the second fixed plate. A recovery suction tube is fixed to one side of each metering tank by a fixing rod. One end of the recovery suction tube is connected to a piston rod assembly via a threaded seal. A three-way valve is installed at one end of the recovery suction tube. A recovery tube is connected to one side of the three-way valve. An extraction tube is connected to one end of the three-way valve. One end of the extraction tube extends into the bottom of the metering tank. A conveying pipe is connected to the bottom of the metering tank. A second valve is installed inside the conveying pipe. One end of the conveying pipe is connected to the inside of the preparation box.

[0006] Preferably, the stirring assembly includes a rotating rod, and the top end of the rotating rod penetrates the interior of the cover plate.

[0007] Preferably, a handwheel is welded to the top of the rotating rod, and multiple stirring rods are fixed at equal intervals on the outer side of the rotating rod.

[0008] Preferably, the diameter of the hole at one end of the steam pipe decreases gradually, and the connection between the steam pipe and the cover plate is sealed by a sealing ring.

[0009] Preferably, the metering container has an observation window inside, and the observation window is fitted with transparent glass.

[0010] Preferably, the injection pipe is connected to the interior of the metering tank via a connecting pipe, and a first valve is installed inside the connecting pipe.

[0011] Preferably, a sealing sleeve is installed at the bottom of the cover plate, and the sealing sleeve is sealed to the inner wall of the preparation box.

[0012] Preferably, the rotating rod is rotatably mounted inside the cover plate via a rotating shaft, and the connection between the rotating rod and the cover plate is sealed by a sealing ring.

[0013] Compared with the prior art, the present invention provides a high-purity ethyl acetate refining device, which has the following beneficial effects:

[0014] The observation window on one side of the metering container allows observation of the chemical content inside, enabling initial quantity control. If excessive chemical content is detected, pulling the piston rod assembly draws the chemical material through the extraction tube into the recovery tube, allowing for precise quantity control. The extracted chemical material stored in the recovery tube can be redirected by changing the outlet direction of the three-way valve, forcing it back into the original storage container. This process recovers excess chemical material, preventing spillage during recovery and ensuring personnel safety while minimizing contamination and waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the cover plate of this utility model;

[0017] Figure 3 This is a cross-sectional view of the metering container of this utility model;

[0018] Figure 4 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0019] In the diagram: 1. Base; 2. Heating copper plate; 3. Preparation box; 4. Steam pipe; 5. Stirring assembly; 501. Rotating rod; 502. Handwheel; 503. Stirring rod; 6. Cover plate; 7. Injection pipe; 8. First fixing plate; 9. Second fixing plate; 10. Recovery extraction pipe; 11. Piston rod assembly; 12. Sealing sleeve; 13. Connecting pipe; 14. Metering tank; 15. Observation window; 16. Conveying pipe; 17. Recovery pipe; 18. Three-way valve; 19. Fixing rod; 20. First valve; 21. Extraction pipe; 22. Second valve. Detailed Implementation

[0020] 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.

[0021] Example 1: A preparation box 3 is fixed to one side of the top of the base 1. A heating copper plate 2 is fixed to the bottom of the base 1 by screws. The heating copper plate 2 works in conjunction with the preparation box 3. A cover plate 6 is installed on the top of the preparation box 3. A stirring assembly 5 is installed inside the cover plate 6. A steam pipe 4 is installed inside the cover plate 6. A first fixing plate 8 and a second fixing plate 9 are fixed to one side of the preparation box 3. Multiple injection pipes 7 are fixed at equal intervals inside the first fixing plate 8. Multiple metering tanks 14 are fixed at equal intervals inside the second fixing plate 9. A recovery tube 10 is fixed to the side by a fixing rod 19. One end of the recovery tube 10 is connected to a piston rod assembly 11 by a threaded seal. A three-way valve 18 is installed at one end of the recovery tube 10. A recovery tube 17 is connected to one side of the three-way valve 18. An extraction tube 21 is connected to one end of the three-way valve 18. One end of the extraction tube 21 extends into the bottom of the metering tank 14. A conveying tube 16 is connected to the bottom of the metering tank 14. A second valve 22 is installed inside the conveying tube 16. One end of the conveying tube 16 is connected to the inside of the preparation box 3.

[0022] The filling pipe 7 is connected to the inside of the metering tank 14 through the connecting pipe 13, and the first valve 20 is installed inside the connecting pipe 13.

[0023] Specifically, such as Figure 1 , Figure 3 and Figure 4As shown, during use, the cover plate 6 is inserted into the preparation box 3, and then the chemical materials to be used are injected into the injection tube 7. Then, the first valve 20 is opened by rotation, allowing the chemical materials stored in the injection tube 7 to be injected into the metering tank 14. The content of the chemical materials inside the metering tank 14 can be observed through the observation window 15 on one side of the metering tank 14, thus performing the first-time quantity control. When it is found that the content of the chemical materials inside the metering tank 14 is too high, pulling the piston rod assembly 11 can cause the piston installed inside the recovery tube 10 to slide, thereby generating a negative pressure. The chemical material inside the metering tank 14 is drawn into the recovery pipe 10 through the extraction pipe 21, thereby precisely controlling the content of the chemical material inside the metering tank 14. The chemical material stored in the recovery pipe 10 can be squeezed into the original storage container through the recovery pipe 17 by changing the outlet direction of the three-way valve 18, thereby recovering the excess chemical material and avoiding splashing when the experimental personnel recover the chemical material, ensuring the personal safety of the experimental personnel, and reducing the pollution and loss of chemical materials.

[0024] Example 2: The stirring assembly 5 includes a rotating rod 501, the top of which penetrates the inside of the cover plate 6. A handwheel 502 is welded to the top of the rotating rod 501, and multiple stirring rods 503 are fixed at equal intervals on the outer side of the rotating rod 501. The diameter of the hole at one end of the steam pipe 4 decreases step by step, and the connection between the steam pipe 4 and the cover plate 6 is sealed by a sealing ring. An observation window 15 is provided inside the metering tank 14, and transparent glass is installed inside the observation window 15. A sealing sleeve 12 is installed at the bottom of the cover plate 6, and the sealing sleeve 12 is sealed to the inner wall of the preparation box 3. The rotating rod 501 is rotatably installed inside the cover plate 6 via a rotating shaft, and the connection between the rotating rod 501 and the cover plate 6 is sealed by a sealing ring.

[0025] Specifically, such as Figure 1 and Figure 2As shown, rotating the handwheel 502 can drive the rotating rod 501 to rotate, which in turn drives multiple stirring rods 503 to rotate inside the preparation chamber 3, thereby stirring and mixing the chemical materials inside the preparation chamber 3. This avoids the need for the experimenter to manually shake the reagent tubes to mix the materials, preventing chemical splashing and improving experimental safety. The steam pipe 4 can transport the steam generated after the chemical materials are heated and evaporated. One end of the steam pipe 4 can be easily connected to the condenser pipe required for the experiment using a rubber tube. The heating copper plate 2 installed at the bottom of the base 1 can transfer heat, so that the heat is evenly distributed at the bottom of the preparation chamber 3. Since the bottom of the cover plate 6 is equipped with a sealing sleeve 12, the sealing sleeve 12 can ensure that the bottom of the cover plate 6 fits tightly against the inner wall of the preparation chamber 3 when inserted into it, thus ensuring that the steam generated by subsequent heating will not leak.

[0026] Working principle: In use, the cover plate 6 is inserted into the preparation box 3, and then the chemical materials to be used are injected into the injection pipe 7. Then, the first valve 20 is opened by rotating it, so that the chemical materials stored in the injection pipe 7 are injected into the metering tank 14. The content of the chemical materials in the metering tank 14 can be observed through the observation window 15 on one side of the metering tank 14, so as to control the amount of material for the first time. When it is found that the content of chemical materials in the metering tank 14 is too high, the piston rod assembly 11 is pulled to drive the piston installed in the recovery suction pipe 10 to slide, thereby generating negative pressure to draw the chemical materials in the metering tank 14 into the recovery suction pipe 10 through the extraction pipe 21, so as to accurately control the content of chemical materials in the metering tank 14. Then, by opening the second valve 22, the chemical materials in the metering tank 14 are injected into the preparation box 3 through the conveying pipe 16. The process begins by rotating the handwheel 502, which in turn rotates the rotating rod 501. This rotation of the rotating rod 501 causes multiple stirring rods 503 to rotate inside the preparation chamber 3, thus agitating and mixing the chemical materials inside. Then, one end of the steam pipe 4 is connected to the condenser pipe. The chemical materials extracted into the recovery pipe 10 can be redirected by changing the outlet direction of the three-way valve 18, squeezing the chemical materials stored in the recovery pipe 10 back into the original storage container through the recovery pipe 17, thereby recovering excess chemical materials. Next, an alcohol lamp is placed below the heating copper plate 2 to heat it. The heating copper plate 2 installed at the bottom of the base 1 transfers heat, ensuring that the heat is evenly distributed across the bottom of the preparation chamber 3. This heats the chemical materials inside the preparation chamber 3, generating steam which enters the condenser pipe, allowing the desired substance to be extracted.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-purity ethyl acetate refining apparatus, comprising a base (1), characterized in that: A preparation box (3) is fixed to one side of the top of the base (1). A heating copper plate (2) is fixed to the bottom of the base (1) by screws. The heating copper plate (2) is used in conjunction with the preparation box (3). A cover plate (6) is installed on the top of the preparation box (3). A stirring assembly (5) is installed inside the cover plate (6). A steam pipe (4) is installed inside the cover plate (6). A first fixing plate (8) and a second fixing plate (9) are fixed to one side of the preparation box (3). Multiple injection pipes (7) are fixed at equal intervals inside the first fixing plate (8). Multiple metering tanks (14) are fixed at equal intervals inside the second fixing plate (9). One side is fixed with a recovery tube (10) by a fixing rod (19). One end of the recovery tube (10) is connected to a piston rod assembly (11) by a threaded seal. One end of the recovery tube (10) is equipped with a three-way valve (18). One side of the three-way valve (18) is connected to a recovery tube (17). One end of the three-way valve (18) is connected to an extraction tube (21). One end of the extraction tube (21) extends into the bottom of the metering tank (14). The bottom of the metering tank (14) is connected to a conveying tube (16). A second valve (22) is installed inside the conveying tube (16). One end of the conveying tube (16) is connected to the inside of the preparation box (3).

2. The apparatus for refining high-purity ethyl acetate according to claim 1, characterized in that: The stirring assembly (5) includes a rotating rod (501), and the top end of the rotating rod (501) penetrates the interior of the cover plate (6).

3. The apparatus for refining high-purity ethyl acetate according to claim 2, characterized in that: A handwheel (502) is welded to the top of the rotating rod (501), and multiple stirring rods (503) are fixed at equal intervals on the outer side of the rotating rod (501).

4. The apparatus for refining high-purity ethyl acetate according to claim 1, characterized in that: The diameter of the hole at one end of the steam pipe (4) decreases gradually, and the connection between the steam pipe (4) and the cover plate (6) is sealed by a sealing ring.

5. The apparatus for refining high-purity ethyl acetate according to claim 1, characterized in that: The metering tank (14) has an observation window (15) inside, and the observation window (15) is fitted with transparent glass.

6. The apparatus for refining high-purity ethyl acetate according to claim 1, characterized in that: The filling pipe (7) is connected to the inside of the metering tank (14) through a connecting pipe (13), and a first valve (20) is installed inside the connecting pipe (13).

7. The apparatus for refining high-purity ethyl acetate according to claim 1, characterized in that: A sealing sleeve (12) is installed at the bottom of the cover plate (6), and the sealing sleeve (12) is sealed to the inner wall of the preparation box (3).

8. The apparatus for refining high-purity ethyl acetate according to claim 2, characterized in that: The rotating rod (501) is rotatably installed inside the cover plate (6) via a rotating shaft, and the connection between the rotating rod (501) and the cover plate (6) is sealed by a sealing ring.

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