Purified terephthalic acid powder drying device

Abstract

The utility model discloses a purified terephthalic acid powder drying device, which relates to the technical field of purified terephthalic acid powder preparation and comprises a purified terephthalic acid powder drying bin, a stirring mechanism is arranged in the purified terephthalic acid powder drying bin, and a drying mechanism is arranged on the surface of the purified terephthalic acid powder drying bin. And the turning mechanism comprises a first motor, a first supporting rod is fixedly connected to the surface of a rotating shaft of the first motor, and a spiral blade is fixedly connected to one end of the first supporting rod. Through the arrangement of the stirring mechanism, when purified terephthalic acid powder is dried, under the action that the motor drives the spiral blades to rotate, the purified terephthalic acid powder can be stirred from the position, close to the inner wall, of the transverse barrel-shaped drying bin, and therefore the larger stirring coverage range is achieved; the purified terephthalic acid powder can be secondarily turned over, the purified terephthalic acid powder is prevented from caking, turning over is more uniform, and the drying effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of purified terephthalic acid powder preparation, in particular to a purified terephthalic acid powder drying device. Background Art

[0002] Purified terephthalic acid (PTA) powder is a crucial organic compound raw material in the chemical industry. PTA is the primary raw material for producing polyester fibers, such as terylene. During the polyester fiber production process, PTA undergoes an esterification reaction with ethylene glycol to form ethylene terephthalate, which then undergoes a polycondensation reaction to form polyester polymer chains. Polyester fibers possess many excellent properties, such as high strength, good abrasion resistance, and strong wrinkle resistance, and are widely used in clothing, home textiles, and other fields. However, during the production process, the PTA powder obtained after a series of chemical reactions often contains a certain amount of moisture, which can affect the subsequent processing performance and product quality of the PTA. Therefore, it must be dried using a drying device.

[0003] In existing drying devices, when drying purified terephthalic acid powder, the stirring blades in the drying chamber have a small coverage area, and there are large areas that the stirring blades cannot reach. When the newly prepared purified terephthalic acid powder has a high humidity, it is easy to agglomerate in the dead corners of the drying chamber when it is turned over. As a result, some purified terephthalic acid powder is over-dried, and the agglomerated parts are not dried to standard, which causes certain inconveniences in use. Utility Model Content

[0004] The utility model provides a purified terephthalic acid powder drying device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A purified terephthalic acid powder drying device includes a purified terephthalic acid powder drying bin, a flipping mechanism is provided inside the purified terephthalic acid powder drying bin, and a drying mechanism is provided on the surface of the purified terephthalic acid powder drying bin. The flipping mechanism includes a first motor, a first support rod is fixedly connected to the surface of the first motor shaft, and a spiral blade is fixedly connected to one end of the first support rod, and a second support rod is fixedly connected to the surface of the first motor shaft, and a flipping blade is fixedly connected to one end of the second support rod.

[0007] A further improvement of the technical solution of the present utility model is that the purified terephthalic acid powder drying bin includes support legs, the top of the support legs is fixedly connected to the bin body, one side of the support legs is fixedly connected to a fixed plate, and a feed pipe is provided on the top of the bin body.

[0008] A further improvement of the technical solution of the present invention is that a moisture drainage port with a gradually expanding inner cavity is provided at the top of the inner cavity of the bin, and a first filter screen is fixedly connected to the inner wall of the moisture drainage port.

[0009] A further improvement of the technical solution of the present utility model is that a discharge port is provided at the bottom of one end of the warehouse body, and a discharge baffle is inserted into the discharge port.

[0010] A further improvement of the technical solution of the present invention is that: the drying mechanism includes an air inlet cavity, and the inner wall of the air inlet cavity is fixedly connected with a mounting plate.

[0011] A further improvement of the technical solution of the present utility model is that: a second motor is fixedly connected to the surface of the mounting plate, a fan blade is fixedly connected to one end of the rotating shaft of the second motor, and a filter plate is provided on the inner wall of the air inlet cavity.

[0012] A further improvement of the technical solution of the present utility model is that one side of the air inlet chamber is connected to a heating chamber through a pipeline, and an electric heating wire is fixedly connected to the inner wall of the heating chamber.

[0013] A further improvement of the technical solution of the present utility model is that: one side of the heating chamber is connected to a drying port through a pipe, the top of the drying port is fixedly connected to the bottom of the inner cavity of the warehouse body, and the inner wall of the drying port is fixedly connected to a second filter.

[0014] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0015] The utility model provides a purified terephthalic acid powder drying device. By setting a turning mechanism, when the purified terephthalic acid powder is dried, the motor drives the spiral blades to rotate, so that the purified terephthalic acid powder can be turned from the inner wall of the horizontal cylindrical drying bin, thereby achieving a larger turning coverage range. At the same time, the setting of the turning blades can turn the purified terephthalic acid powder twice, avoiding the agglomeration of the purified terephthalic acid powder, and turning more evenly, thereby achieving a better drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a side structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the exploded structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the flipping mechanism of the present utility model;

[0020] Figure 5 This is a structural diagram of the drying mechanism of the present utility model.

[0021] In the figure: 11. Support leg; 12. Bin body; 13. Fixed plate; 14. Dehumidification port; 15. First filter; 16. Discharge port; 17. Discharge baffle; 18. Feed pipe; 21. First motor; 22. First support rod; 23. Spiral blade; 24. Second support rod; 25. Flip blade; 31. Air inlet chamber; 32. Mounting plate; 33. Second motor; 34. Fan blade; 35. Filter plate; 36. Heating chamber; 37. Heating wire; 38. Drying port; 39. Second filter. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the embodiments:

[0023] Example 1

[0024] like Figure 1-5 As shown, the utility model provides a purified terephthalic acid powder drying device, including a purified terephthalic acid powder drying bin, a flipping mechanism is provided inside the purified terephthalic acid powder drying bin, a drying mechanism is provided on the surface of the purified terephthalic acid powder drying bin, the flipping mechanism includes a first motor 21, a first support rod 22 is fixedly connected to the surface of the rotating shaft of the first motor 21, one end of the first support rod 22 is fixedly connected to a spiral blade 23, a second support rod 24 is fixedly connected to the surface of the rotating shaft of the first motor 21, and one end of the second support rod 24 is fixedly connected to a flipping blade 25.

[0025] In this embodiment, during the drying process, the first motor 21 is started to rotate the spiral blade 23 and the flipping blade 25 via the first support rod 22 and the second support rod 24. The spiral blade 23 rotates close to the inner wall of the bin body 12 to increase the flipping range, thereby avoiding the presence of flipping dead corners that would cause the purified terephthalic acid powder to agglomerate. The rotation of the flipping blade 25 can perform a secondary flipping of the purified terephthalic acid powder, thereby making the flipping more uniform.

[0026] Example 2

[0027] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the purified terephthalic acid powder drying bin includes a support leg 11, the top of the support leg 11 is fixedly connected to the bin body 12, one side of the support leg 11 is fixedly connected to a fixing plate 13, the top of the bin body 12 is provided with a feed pipe 18, the top of the inner cavity of the bin body 12 is provided with a dehumidification port 14 with a gradually expanding inner cavity, the inner wall of the dehumidification port 14 is fixedly connected to a first filter screen 15, the bottom of one end of the bin body 12 is provided with a discharge port 16, and the inside of the discharge port 16 is plugged with a discharge baffle 17.

[0028] In this embodiment, the purified terephthalic acid powder is gradually heated and dried by hot air. The generated moisture is discharged from the dehumidification port 14. As the inner cavity of the dehumidification port 14 gradually expands, the flow rate of the discharged moisture is slowed down, reducing the amount of purified terephthalic acid powder entrained in the airflow. The moisture is then filtered through the first filter 15 to prevent the purified terephthalic acid powder from being entrained and flying out. After drying is completed, the discharge baffle 17 is pulled out to allow the purified terephthalic acid powder to be discharged from the discharge port 16. During the discharge process, the rotation of the spiral blade 23 can also continuously push the purified terephthalic acid powder in the silo 12 toward the discharge port 16, making discharge more convenient.

[0029] Example 3

[0030] like Figure 1-5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the drying mechanism includes an air inlet chamber 31, the inner wall of the air inlet chamber 31 is fixedly connected with a mounting plate 32, the surface of the mounting plate 32 is fixedly connected with a second motor 33, one end of the rotating shaft of the second motor 33 is fixedly connected with a fan blade 34, the inner wall of the air inlet chamber 31 is provided with a filter plate 35, one side of the air inlet chamber 31 is connected to the heating chamber 36 through a pipe, the inner wall of the heating chamber 36 is fixedly connected with an electric heating wire 37, one side of the heating chamber 36 is connected to a drying port 38 through a pipe, the top of the drying port 38 is fixedly connected to the bottom of the inner cavity of the warehouse body 12, and the inner wall of the drying port 38 is fixedly connected with a second filter screen 39.

[0031] In this embodiment, when drying the purified terephthalic acid powder, after placing it into the silo 12 through the feed pipe, the second motor 33 is started to rotate the fan blades 34, thereby sucking outside air into the cavity from one side of the air inlet chamber 31. After being filtered and dust-removed by the filter plate 35, the air enters the heating chamber 36 along the pipeline. Under the action of the heating wire 37, the air is heated. The heated air then enters the silo 12 through the drying port 38 along the pipeline, thereby drying the purified terephthalic acid powder in the silo 12. At the same time, the provision of a second filter 39 on the inner wall of the drying port 38 can prevent the purified terephthalic acid powder from flowing back into the pipeline.

[0032] The following is a detailed description of the working principle of the purified terephthalic acid powder drying device.

[0033] like Figure 1-5As shown, when the purified terephthalic acid powder is dried, it is placed in the warehouse body 12 from the feed pipe, and the second motor 33 is started to rotate the fan blade 34, so that the outside air is sucked into the cavity from one side of the air inlet chamber 31. After being filtered and dust-removed by the filter plate 35, the air enters the heating chamber 36 along the pipeline. Under the action of the heating wire 37, the air is heated. Then, the heated air enters the warehouse body 12 from the drying port 38 along the pipeline to dry the purified terephthalic acid powder in the warehouse body 12. At the same time, the second filter screen 39 on the inner wall of the drying port 38 can prevent the purified terephthalic acid powder from flowing back into the pipeline. During the drying process, the first motor 21 is started to drive the spiral blade 23 and the flipping blade 25 to rotate through the first support rod 22 and the second support rod 24. The rotation of the spiral blade 23 close to the inner wall of the warehouse body 12 can increase the flipping effect. The range of movement is wide, and dead corners of flipping are avoided, which may cause the purified terephthalic acid powder to agglomerate. The rotation of the flipping blades 25 can flip the purified terephthalic acid powder for the second time, making it flip more evenly. The hot air gradually heats and dries the purified terephthalic acid powder. The generated moisture is discharged from the dehumidification port 14. Under the effect of the gradual expansion of the inner cavity of the dehumidification port 14, the flow rate of the discharged moisture is slowed down, and the purified terephthalic acid powder entrained in the air flow is reduced. Then, the moisture is filtered through the first filter screen 15 to prevent the purified terephthalic acid powder from being entrained and flying out. After the drying is completed, the discharge baffle 17 is pulled out, so that the purified terephthalic acid powder can be discharged from the discharge port 16. During the discharge process, the rotation of the spiral blades 23 can continuously push the purified terephthalic acid powder in the bin body 12 toward the discharge port 16, making it more convenient to discharge.

[0034] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A purified terephthalic acid powder drying device, comprising a purified terephthalic acid powder drying bin, characterized in that: A turning mechanism is provided inside the purified terephthalic acid powder drying bin, and a drying mechanism is provided on the surface of the purified terephthalic acid powder drying bin. The turning mechanism comprises a first motor (21), a first support rod (22) is fixedly connected to the surface of the rotating shaft of the first motor (21), one end of the first support rod (22) is fixedly connected to a spiral blade (23), a second support rod (24) is fixedly connected to the surface of the rotating shaft of the first motor (21), and one end of the second support rod (24) is fixedly connected to a turning blade (25).

2. The purified terephthalic acid powder drying device according to claim 1, characterized in that: The purified terephthalic acid powder drying bin comprises a support leg (11), the top of the support leg (11) is fixedly connected to a bin body (12), one side of the support leg (11) is fixedly connected to a fixing plate (13), and the top of the bin body (12) is provided with a feed pipe (18).

3. The purified terephthalic acid powder drying device according to claim 2, characterized in that: The top of the inner cavity of the silo (12) is provided with a moisture drainage port (14) with a gradually expanding inner cavity, and the inner wall of the moisture drainage port (14) is fixedly connected with a first filter screen (15).

4. The purified terephthalic acid powder drying device according to claim 3, characterized in that: A discharge port (16) is provided at the bottom of one end of the silo (12), and a discharge baffle (17) is inserted into the discharge port (16).

5. The purified terephthalic acid powder drying device according to claim 1, characterized in that: The drying mechanism comprises an air inlet cavity (31), and an inner wall of the air inlet cavity (31) is fixedly connected with a mounting plate (32).

6. The purified terephthalic acid powder drying device according to claim 5, characterized in that: A second motor (33) is fixedly connected to the surface of the mounting plate (32), a fan blade (34) is fixedly connected to one end of the rotating shaft of the second motor (33), and a filter plate (35) is provided on the inner wall of the air inlet cavity (31).

7. The purified terephthalic acid powder drying device according to claim 6, characterized in that: One side of the air inlet chamber (31) is connected to a heating chamber (36) through a pipeline, and an electric heating wire (37) is fixedly connected to the inner wall of the heating chamber (36).

8. The purified terephthalic acid powder drying device according to claim 7, characterized in that: One side of the heating chamber (36) is connected to a drying port (38) through a pipeline. The top of the drying port (38) is fixedly connected to the bottom of the inner cavity of the bin body (12). The inner wall of the drying port (38) is fixedly connected to a second filter (39).

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