Dimethylformamide purification device

Abstract

The utility model relates to the technical field of dimethylformamide recovery, in particular to a dimethylformamide purification device which comprises a liquid storage cylinder, a stirring reaction mechanism is mounted at the top of an inner cavity of the liquid storage cylinder, a blow-down valve is communicated with the center of the bottom of the liquid storage cylinder, and an electronic detection part is fixedly mounted at the bottom of the left side of the liquid storage cylinder. A drawing and draining mechanism penetrates through the right side of the bottom of the liquid storage barrel, the front side of the top of an inner cavity of the liquid storage barrel communicates with a feeding pipe, and the stirring reaction mechanism comprises a driving motor. Through the arrangement of the stirring reaction mechanism and the drawing and liquid discharging mechanism, the device has the advantage of combined treatment, the driving motor can work to drive the movable rod and the stirring blades to rotate to achieve the stirring effect, meanwhile, sulfuric acid liquid flows through the conveying pipe, the hollow hopper, the liquid inlet groove and the liquid discharging hole, and the sulfuric acid liquid is thrown out by the rotating movable rod; the dimethyl formamide waste liquid falls into the liquid storage barrel, so that the overall stirring reaction efficiency is better.

Description

Technical Field

[0001] The utility model relates to the technical field of dimethylformamide recovery, in particular to a dimethylformamide purification device. Background Art

[0002] Dimethylformamide is an important chemical raw material and solvent with a wide range of applications. In the process of collecting dimethylformamide waste liquid, it will be purified and processed by adjusting pH-flash evaporation-gas separation-vapor stripping distillation, and then the dimethylformamide waste liquid will be treated with a purification device.

[0003] In the basic purification device, the stirring operation cannot be combined with the injection operation in the pH adjustment process. The two exist independently, resulting in a fixed injection position. A longer stirring time is required to achieve the purpose of mixing reaction. The actual processing efficiency is average. In order to solve the above technical problems, we designed a dimethylformamide purification device. Utility Model Content

[0004] The utility model aims to provide a dimethylformamide purification device, which has the advantages of combined treatment and solves the problem that the basic purification device cannot combine the stirring operation with the liquid injection operation in the pH adjustment process, and the two exist independently, resulting in a fixed liquid injection position, requiring a longer stirring time to achieve the purpose of mixing reaction, and the actual processing efficiency is general.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dimethylformamide purification device, comprising a liquid storage cylinder, a stirring reaction mechanism is installed on the top of the inner cavity of the liquid storage cylinder, a sewage valve is connected to the center of the bottom of the liquid storage cylinder, an electronic detection component is fixedly installed on the bottom of the left side of the liquid storage cylinder, a suction and drainage mechanism is installed through the right side of the bottom of the liquid storage cylinder, and a feeding pipe is connected to the front side of the top of the inner cavity of the liquid storage cylinder.

[0006] Preferably, the stirring reaction mechanism comprises a driving motor, the bottom of the driving motor is bolted to the top of the liquid storage cylinder, and the output end of the driving motor is fixedly connected to the inner cavity of the liquid storage cylinder with a movable rod.

[0007] Preferably, a hollow bucket is provided on the top of the surface of the movable rod through a sealing bearing movable sleeve, and the tops of the left and right sides of the hollow bucket are both connected to transmission pipes.

[0008] Preferably, a solenoid valve and a flow sensor are respectively mounted on the surface of the transmission pipe, and a liquid inlet groove is provided on the surface of the movable rod and in the inner cavity of the hollow bucket.

[0009] Preferably, a drainage hole is provided on the surface of the movable rod, and a stirring blade is fixedly connected to the bottom of the surface of the movable rod.

[0010] Preferably, the suction and drainage mechanism includes a drainage pipe, which is fixedly embedded in the surface of the liquid storage barrel, a filter screen is fixedly installed on the left end of the drainage pipe and located in the inner cavity of the liquid storage barrel, and an electric heating ring is fixedly sleeved on the surface of the drainage pipe and located in the inner cavity of the liquid storage barrel.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model has the advantage of combined treatment by arranging a stirring reaction mechanism and a suction and drainage mechanism. The utility model can be operated by a driving motor to drive the movable rod and the stirring blade to rotate to achieve the stirring effect. At the same time, sulfuric acid liquid flows through the transmission pipe, the hollow bucket, the liquid inlet tank and the liquid drainage hole, and the sulfuric acid liquid is thrown out by the rotating movable rod and falls into the dimethylformamide waste liquid in the liquid storage cylinder, so that the overall stirring reaction efficiency is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a sectional stereoscopic diagram of the structure of the utility model;

[0015] Figure 3 It is a sectional stereoscopic diagram of the local structure of the stirring reaction mechanism of the utility model.

[0016] In the figure: 1. Liquid storage cylinder; 2. Drain valve; 3. Stirring reaction mechanism; 301. Driving motor; 302. Hollow bucket; 303. Solenoid valve; 304. Transmission pipe; 305. Movable rod; 306. Stirring blade; 307. Drain hole; 308. Flow sensor; 309. Liquid inlet tank; 4. Electronic detection component; 5. Drainage mechanism; 501. Filter screen; 502. Electric heating ring; 503. Drain pipe; 6. Feeding pipe. DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 3 A dimethylformamide purification device comprises a liquid storage cylinder 1, a stirring reaction mechanism 3 is installed on the top of the inner cavity of the liquid storage cylinder 1, a drain valve 2 is connected at the center of the bottom of the liquid storage cylinder 1, and the drain valve 2 can be set to prevent the waste liquid in the liquid storage cylinder 1 from being discharged in a closed state, and the residual waste liquid and impurities in the liquid storage cylinder 1 can be discharged in an open state, an electronic detection component 4 is fixedly installed on the bottom of the left side of the liquid storage cylinder 1, a liquid extraction and drainage mechanism 5 is installed through the right side of the bottom of the liquid storage cylinder 1, and a feeding pipe 6 is connected to the front side of the top of the inner cavity of the liquid storage cylinder 1;

[0018] See also Figure 2 and Figure 3The stirring reaction mechanism 3 includes a driving motor 301, the bottom of the driving motor 301 is bolted to the top of the liquid storage cylinder 1, and the output end of the driving motor 301 and the inner cavity of the liquid storage cylinder 1 are fixedly connected with a movable rod 305;

[0019] See also Figure 2 and Figure 3 The top of the movable rod 305 surface is provided with a hollow bucket 302 through a sealed bearing movable sleeve. By providing the hollow bucket 302, two transmission pipes 304 can be connected at the same time, and can be movably installed on the movable rod 305. The tops of the left and right sides of the hollow bucket 302 are both connected with transmission pipes 304. By providing the transmission pipe 304, it can be connected with an external sulfuric acid liquid source. With the cooperation of an external fluoroplastic alloy pump, sulfuric acid liquid can be continuously passed into the hollow bucket 302;

[0020] See also Figure 2 and Figure 3 The surface of the transmission pipe 304 is respectively provided with an electromagnetic valve 303 and a flow sensor 308. By providing the electromagnetic valve 303, the sulfuric acid liquid can be prevented from flowing in a closed state. By providing the flow sensor 308, the total amount of sulfuric acid liquid transmitted in the transmission pipe 304 can be monitored in real time. The surface of the movable rod 305 and the inner cavity of the hollow bucket 302 are provided with a liquid inlet groove 309. By providing the liquid inlet groove 309, the space in the hollow bucket 302 can be connected with the space in the movable rod 305, thereby meeting the sulfuric acid liquid transmission demand;

[0021] See also Figure 2 and Figure 3 The surface of the movable rod 305 is provided with drainage holes 307. By providing the drainage holes 307, the sulfuric acid liquid can be evenly distributed on the movable rod 305, so that when the movable rod 305 rotates, the sulfuric acid liquid is discharged uniformly from the drainage holes 307. The bottom of the surface of the movable rod 305 is fixedly connected with a stirring blade 306. By providing the movable rod 305 and the stirring blade 306, the stirring blade 306 can be driven by the driving motor 301 to continuously rotate to achieve the purpose of good stirring;

[0022] See also Figure 2 The liquid extraction and drainage mechanism 5 includes a liquid drainage pipe 503, which is fixedly embedded in the surface of the liquid storage cylinder 1. A filter screen 501 is fixedly installed at the left end of the liquid drainage pipe 503 and located in the inner cavity of the liquid storage cylinder 1. By setting the filter screen 501, it can play a role of filtering and intercepting, and prevent the precipitated impurities from entering the liquid drainage pipe 503. The surface of the liquid drainage pipe 503 and located in the inner cavity of the liquid storage cylinder 1 are fixedly sleeved with an electric heating ring 502. By setting the electric heating ring 502, it can be heated and heated in the working state, which not only improves the reaction rate, but also makes the liquid have a certain temperature, which is conducive to the subsequent flash evaporation process.

[0023] The electronic detection component 4 includes an integrated board, a PH sensor and a temperature sensor. The detection ends of the PH sensor and the temperature sensor both penetrate the inner cavity of the liquid storage cylinder 1. The integrated board is fixedly connected to the liquid storage cylinder 1. The PH sensor and the temperature sensor are both fixedly mounted on the integrated board. By setting the electronic detection component 4, the PH sensor and the temperature sensor can be used to monitor the PH value and the temperature value of the liquid in the liquid storage cylinder 1 respectively.

[0024] The top of the surface of the movable rod 305 is designed to be hollow, so that the hollow bucket 302, the liquid inlet groove 309 and the liquid discharge hole 307 are in a connected state;

[0025] The top of the hollow bucket 302 is fixedly connected to the top of the inner cavity of the liquid storage cylinder 1 .

[0026] When in use, all components are in the initial installation state. First, a proper amount of dimethylformamide waste liquid is added to the liquid storage cylinder 1 through the feeding pipe 6, and then the driving motor 301 is controlled to work, and a sulfuric acid solution with a volume concentration of 30% is injected from the transmission pipe 304 at the same time. The sulfuric acid liquid enters the hollow bucket 302 and is transmitted through the liquid inlet groove 309 and the liquid discharge hole 307. The driving motor 301 drives the movable rod 305 to rotate, and the sulfuric acid liquid is rotated outward, so that the sulfuric acid liquid falls evenly into the dimethylformamide waste liquid in the liquid storage cylinder 1, and the movable rod 305 is driven to rotate. The rotation of rod 305 will also drive stirring blade 306 to achieve the purpose of mixing and stirring, and synchronously control the operation of electric heating ring 502 to increase the temperature of the liquid in liquid storage cylinder 1, accelerate the reaction, and the sulfuric acid solution reacts with the organic base impurities in the waste liquid dimethylformamide to precipitate the reactant from the solution. Finally, the treated liquid with temperature in liquid storage cylinder 1 is filtered by filter screen 501 in conjunction with an external pump, and then discharged through drain pipe 503, which is beneficial to the subsequent flash evaporation process. Then, drain valve 2 is opened to discharge the residual waste liquid and precipitate through drain valve 2.

[0027] In summary, the dimethylformamide purification device, by providing a stirring reaction mechanism 3 and a suction and discharge mechanism 5, solves the problem that the basic purification device cannot combine the stirring operation with the injection operation in the pH adjustment process, and the two exist independently, resulting in a fixed injection position. A longer stirring time is required to achieve the purpose of the mixing reaction, and the actual processing efficiency is general.

Claims

1. A dimethylformamide purification device, comprising a liquid storage cylinder (1), characterized in that: A stirring reaction mechanism (3) is installed at the top of the inner cavity of the liquid storage cylinder (1), a drain valve (2) is connected to the center of the bottom of the liquid storage cylinder (1), an electronic detection component (4) is fixedly installed at the bottom of the left side of the liquid storage cylinder (1), a suction and drainage mechanism (5) is installed through the right side of the bottom of the liquid storage cylinder (1), and a feeding pipe (6) is connected to the front side of the top of the inner cavity of the liquid storage cylinder (1).

2. A dimethylformamide purification device according to claim 1, characterized in that: The stirring reaction mechanism (3) comprises a driving motor (301), the bottom of the driving motor (301) is bolted to the top of the liquid storage cylinder (1), and the output end of the driving motor (301) is fixedly connected to the inner cavity of the liquid storage cylinder (1) with a movable rod (305).

3. A dimethylformamide purification device according to claim 2, characterized in that: A hollow bucket (302) is provided at the top of the surface of the movable rod (305) via a sealing bearing movable sleeve, and the tops of the left and right sides of the hollow bucket (302) are both connected to transmission pipes (304).

4. A dimethylformamide purification device according to claim 3, characterized in that: The surface of the transmission pipe (304) is respectively sleeved with an electromagnetic valve (303) and a flow sensor (308), and the surface of the movable rod (305) and the inner cavity of the hollow bucket (302) are provided with a liquid inlet groove (309).

5. A dimethylformamide purification device according to claim 4, characterized in that: A liquid discharge hole (307) is provided on the surface of the movable rod (305), and a stirring blade (306) is fixedly connected to the bottom of the surface of the movable rod (305).

6. A dimethylformamide purification device according to claim 1, characterized in that: The liquid-drawing and draining mechanism (5) comprises a liquid-drawing pipe (503), wherein the liquid-drawing pipe (503) is fixedly embedded in the surface of the liquid storage barrel (1), a filter screen (501) is fixedly installed at the left end of the liquid-drawing pipe (503) and located in the inner cavity of the liquid storage barrel (1), and an electric heating ring (502) is fixedly sleeved on the surface of the liquid-drawing pipe (503) and located in the inner cavity of the liquid storage barrel (1).

Images