CN218011548U

CN218011548U - Filter for improving content of pyromellitic acid raw material

Info

Publication number: CN218011548U
Application number: CN202221959023.1U
Authority: CN
Inventors: 孙海峰; 刘珂; 杨学城
Original assignee: Boshan Hengtai Chemical Plant
Current assignee: Boshan Hengtai Chemical Plant
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-12-13
Anticipated expiration: 2032-07-28

Abstract

The utility model relates to the field of filtering devices, in particular to a filter for improving the content of pyromellitic acid raw material, which comprises a filtering device, a distilling device, a collecting device, a valve e and a through pipe; the inner wall of the filtering device is provided with a baffle a and a baffle b, the filtering device is provided with a water inlet, the filtering device is provided with a water outlet, the filtering device is provided with an ethanol inlet, the baffle b is provided with a valve f, the top of the filtering device is provided with a feed inlet, and the filtering device is internally provided with a stirring assembly a and a stirring assembly b; the valve e is arranged at the right end of the baffle plate a; the through pipe is arranged on the filtering device, and the feed end of the through pipe is provided with a valve g and a filter screen b; a baffle c is arranged on the inner wall of the distillation device, and a heater is arranged below the baffle c; the top of the distillation device is provided with a rubber tube, the rubber tube is connected with the right end of the long guide tube, and the left end of the long guide tube extends into the collection device. The utility model discloses utilize the physics nature of pyromellitic acid to dissolve, filter, appear it, improved the purity of pyromellitic acid.

Description

Filter for improving content of pyromellitic acid raw material

Technical Field

The utility model relates to a filter equipment field especially relates to an improve filter of pyromellitic acid raw materials content.

Background

The filtering is an operation that liquid (or gas) in suspension (or solid particle-containing heating gas) permeates through a medium under the action of driving force or other external force, and solid particles and other substances are intercepted by the filtering medium, so that the solid and other substances are separated from the liquid (or gas).

Pyromellitic acid is the main raw materials who is used for synthesizing polyimide, pyromellitic acid octyl ester etc, but need filter its internal impurity just can make when using pyromellitic acid, but the most filter equipment that can be present only has this kind of simple structure of filter screen, can't carry out thorough filtration to pyromellitic acid, and then leads to not filtering the pyromellitic acid purity of accomplishing inadequately, and then leads to synthesizing the quality of polyimide, pyromellitic acid octyl ester can't obtain guaranteeing.

Chinese patent No. CN215876548U discloses a filter for increasing the content of pyromellitic acid raw material, which comprises a filter tube, and the inner surface of the filter tube is connected with a coarse-pore filter screen in a sliding manner. Reciprocate and screen through the coarse pore filter screen for to pyromellitic acid can obtain automatic and abundant filtration before getting into the preparation, and then improve the purity of pyromellitic acid, and then improve the purity of synthesizing substances such as polyimide, pyromellitic acid octyl ester.

However, the above-mentioned known solutions have the following disadvantages: only some impurities with larger particles can be screened out, the tiny impurities can not be removed, and the purity of the pyromellitic acid is not high enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is to the problem of the small impurity of unable rejection that exists in the background art, provides a filter that improves pyromellitic acid raw materials content.

The technical scheme of the utility model: a filter for improving the content of pyromellitic acid raw material comprises a filtering device, a distilling device, a collecting device, a valve e and a through pipe; the inner wall of the filtering device is provided with a baffle a and a baffle b, the baffle a is arranged above the baffle b, the filtering device is provided with a water inlet, the water inlet is positioned above the baffle a, the water inlet is provided with a valve a, the filtering device is provided with a water outlet, the water outlet is positioned at the right end of the baffle a, the water outlet is provided with a valve d and a filter screen a, the filtering device is provided with an ethanol inlet port, the ethanol inlet port is positioned between the baffle a and the baffle b, the ethanol inlet port is provided with a valve c, the left end of the baffle b is provided with a valve f, the top of the filtering device is provided with a feed inlet, the feed inlet is internally provided with a valve b, the filtering device is internally provided with a stirring assembly a and a stirring assembly b, and the stirring assembly a and the stirring assembly b are respectively positioned above and below the baffle a; the valve e is arranged at the right end of the baffle plate a; the through pipe is arranged on the filtering device, the feed end of the through pipe is positioned at the left end of the baffle b, the feed end of the through pipe is provided with a valve g and a filter screen b, and the discharge end of the through pipe is connected with the distilling device; a baffle c is arranged on the inner wall of the distillation device, and a heater is arranged below the baffle c; the top of the distillation device is provided with a rubber tube, the rubber tube is connected with the right end of the long guide tube, and the left end of the long guide tube extends into the collection device.

Preferably, the baffle a is inclined to the lower right.

Preferably, the baffle b is inclined downward and leftward.

Preferably, the stirring assembly a comprises a motor a and a stirring device a; the motor a is arranged on the filtering device, the stirring device a is rotatably arranged on the baffle a, and the top of the stirring device a is connected with an output shaft of the motor a.

Preferably, the motor a is positioned on the right side of the feed opening.

Preferably, the stirring assembly b comprises a motor b and a stirring device b; the stirring device b is rotatably arranged on the baffle b; the motor b is arranged on the inner wall of the bottom of the filtering device, and an output shaft of the motor b is connected with the bottom of the stirring device b.

Preferably, the inner wall of the rubber tube is tightly attached to the right end of the long guide tube.

Compared with the prior art, the utility model discloses following profitable technological effect has: not only can remove the impurities with larger particles, but also can remove some impurities which are soluble in water and impurities which are insoluble in ethanol; simple operation and high purity.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

fig. 3 is an enlarged schematic view of a portion a of fig. 2.

Reference numerals: 1. a filtration device; 2. a collection device; 3. a distillation apparatus; 4. a feed inlet; 5. a water inlet; 6. an ethanol inlet; 8. a water outlet; 9. a baffle plate a; 10. a baffle b; 11. a motor a; 12. a stirring device a; 13. a motor b; 14. a stirring device b; 15. a valve a; 16. a valve b; 17. a valve c; 18. a valve d; 19. a valve e; 20. a valve f; 21. a valve g; 22. a filter screen a; 23. a filter screen b; 24. pipe passing; 25. a heater; 26. a baffle plate c; 27. a rubber tube; 28. a long catheter.

Detailed Description

Example one

As shown in fig. 1-3, the filter for increasing the content of pyromellitic acid raw material provided by the present invention comprises a filtering device 1, a distilling device 3, a collecting device 2, a valve e19 and a through pipe 24; the inner wall of the filtering device 1 is provided with a baffle plate a9 and a baffle plate b10, the baffle plate a9 inclines towards the lower right, the baffle plate b10 inclines towards the lower left, the baffle plate a9 is arranged above the baffle plate b10, the filtering device 1 is provided with a water inlet 5, the water inlet 5 is arranged above the baffle plate a9, the water inlet 5 is provided with a valve a15, the filtering device 1 is provided with a water outlet 8, the water outlet 8 is arranged at the right end of the baffle plate a9, the water outlet 8 is provided with a valve d18 and a filter screen a22, the filtering device 1 is provided with an ethanol inlet 6, the ethanol inlet 6 is arranged between the baffle plate a9 and the baffle plate b10, the ethanol inlet 6 is provided with a valve c17, the left end of the baffle plate b10 is provided with a valve f20, the top of the filtering device 1 is provided with a feed inlet 4, the feed inlet 4 is internally provided with a valve b16, the filtering device is internally provided with a stirring assembly a and a stirring assembly b, and the stirring assembly a and a stirring assembly b are respectively arranged above and below the baffle plate a 9; the valve e19 is arranged at the right end of the baffle a 9; the through pipe 24 is arranged on the filtering device 1, the feed end of the through pipe 24 is positioned at the left end of the baffle b10, the feed end of the through pipe 24 is provided with a valve g21 and a filter screen b23, and the discharge end of the through pipe 24 is connected with the distilling device 3; a baffle c26 is arranged on the inner wall of the distillation device 3, and a heater 25 is arranged below the baffle c 26; the top of the distillation device 3 is provided with a rubber tube 27, the inner wall of the rubber tube 27 is tightly attached to the right end of the long guide tube 28, and the left end of the long guide tube 28 extends into the collection device.

The working principle is as follows: pyromellitic acid particles enter the filtering device 1 from the feeding hole 4, the valve a15 is opened at the same time, water enters from the water inlet 5, the motor a11 is started to drive the stirring device a12 to rotate, so that the water is fully contacted with the pyromellitic acid particles, impurities dissolved in the water are separated from the pyromellitic acid particles by utilizing the physical property that the pyromellitic acid is slightly soluble in the water, the valve a15 and the valve b16 are closed, the valve d18 is opened to discharge the water with the impurities from the water outlet 8 until the water is discharged completely, and the solid particles are blocked at the right end of the baffle a9 by the filter screen a 22; opening a valve e19 to enable the remaining solid particles to fall on a baffle b10, simultaneously opening a valve c17 to convey ethanol into the device from an ethanol inlet 6, opening a motor b13 to drive a stirring device b14 to enable the ethanol to be fully contacted with the solid particles, separating the pyromellitic acid from impurities insoluble in water by utilizing the physical property that the pyromellitic acid is easily dissolved in the alcohol, opening a valve g21 to enable the ethanol solution with the pyromellitic acid to enter a distillation device 3, filtering the ethanol solution through a filter screen b23 to enable the impurities insoluble in the alcohol to remain at the left end of the baffle b10, closing the valve g21 after the ethanol solution completely enters the distillation device 3, and opening a valve f20 to enable the impurities to fall at the bottom of the filter device 1 to collect and process the impurities; after the ethanol solution completely enters the distillation device 3, the heater 25 is turned on to heat the ethanol solution to 80 ℃, the ethanol liquid is changed into ethanol vapor, the ethanol vapor enters the long guide pipe 28 from the rubber pipe 27 to be liquefied and falls into the collection device 2, and when the ethanol solution completely changes into the ethanol vapor, high-purity pyromellitic acid solid particles are left on the baffle c 26.

In this embodiment, through a series of simple dissolving filtration distillation operations for dissolve more fully, it is more convenient to filter, and distillation effect is good, and pyromellitic acid's purity is higher.

Example two

As shown in fig. 2, compared with the first embodiment, the filter for increasing the content of pyromellitic acid raw material provided by the present invention has a stirring assembly a including a motor a11 and a stirring device a12, the motor a11 is disposed on the filtering device 1, the motor a11 is located at the right side of the feeding port 4, the stirring device a12 is rotatably disposed on the baffle a9, and the top of the stirring device a12 is connected to the output shaft of the motor a 11; the stirring assembly b comprises a motor b13 and a stirring device b14; the stirring device b14 is rotatably arranged on the baffle b 10; the motor b13 is arranged on the inner wall of the bottom of the filtering device 1, and the output shaft of the motor b13 is connected with the bottom of the stirring device b 14. The stirring component can make liquid and solid fully contact and dissolve, and efficiency is improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A filter for improving the content of pyromellitic acid raw material is characterized by comprising a filtering device (1), a distilling device (3), a collecting device (2), a valve e (19) and a through pipe (24); the device comprises a filtering device (1), and is characterized in that a baffle a (9) and a baffle b (10) are arranged on the inner wall of the filtering device (1), the baffle a (9) is arranged above the baffle b (10), a water inlet (5) is arranged on the filtering device (1), the water inlet (5) is arranged above the baffle a (9), a valve a (15) is arranged on the water inlet (5), a water outlet (8) is arranged on the filtering device (1), the water outlet (8) is arranged at the position of the right end of the baffle a (9), the water outlet (8) is provided with a valve d (18) and a filter screen a (22), an ethanol inlet (6) is arranged on the filtering device (1), the ethanol inlet (6) is arranged between the baffle a (9) and the baffle b (10), a valve c (17) is arranged on the ethanol inlet (6), a valve f (20) is arranged at the left end of the baffle b (10), a feed inlet (4) is arranged at the top of the filtering device (1), a valve b (16) is arranged in the feed inlet (4), a stirring assembly a and a stirring assembly b are arranged below the baffle a (9) and a stirring assembly b; the valve e (19) is arranged at the right end of the baffle a (9); the through pipe (24) is arranged on the filtering device (1), the feed end of the through pipe (24) is positioned at the left end of the baffle b (10), the feed end of the through pipe (24) is provided with a valve g (21) and a filter screen b (23), and the discharge end of the through pipe (24) is connected with the distilling device (3); a baffle c (26) is arranged on the inner wall of the distillation device (3), and a heater (25) is arranged below the baffle c (26); the top of the distillation device (3) is provided with a rubber tube (27), the rubber tube (27) is connected with the right end of the long guide tube (28), and the left end of the long guide tube (28) extends into the collection device.

2. The filter for increasing the content of pyromellitic acid in raw material according to claim 1, wherein the baffle a (9) is inclined downward and rightward.

3. The filter for increasing the content of pyromellitic acid in raw material according to claim 1, wherein the baffle b (10) is inclined downward to the left.

4. The filter for increasing the content of the pyromellitic acid raw material according to claim 1, wherein the stirring assembly a comprises a motor a (11) and a stirring device a (12); the motor a (11) is arranged on the filtering device (1), the stirring device a (12) is rotatably arranged on the baffle a (9), and the top of the stirring device a (12) is connected with an output shaft of the motor a (11).

5. A filter for increasing the content of pyromellitic acid raw material according to claim 4, wherein the motor a (11) is located at the right side of the inlet port (4).

6. The filter for increasing the content of the pyromellitic acid raw material according to claim 1, wherein the stirring assembly b comprises a motor b (13) and a stirring device b (14); the stirring device b (14) is rotationally arranged on the baffle b (10); the motor b (13) is arranged on the inner wall of the bottom of the filtering device (1), and an output shaft of the motor b (13) is connected with the bottom of the stirring device b (14).

7. The filter for increasing the content of pyromellitic acid raw material according to claim 1, wherein the inner wall of the rubber tube (27) is closely attached to the right end of the long guide tube (28).