PTA (pure terephthalic acid) production device

Abstract

The utility model relates to the technical field of PTA production, and discloses a PTA production device which comprises a tank body, a cover plate is arranged at the top end of the tank body, a protective cover is arranged in the middle of the top end of the cover plate, a lead screw is arranged in the protective cover, and a positive and negative rotation motor for driving the lead screw to rotate is arranged in the middle of the top end of the protective cover. A sliding groove is formed in the lead screw, a sliding rod is slidably connected to the interior of the sliding groove, a protruding strip is arranged on the surface of the sliding rod, and a plurality of stirring rods are arranged at the bottom of the sliding rod; a lead screw is driven by a forward and reverse rotation motor to do forward and reverse reciprocating rotation, the lead screw can drive a sliding rod to rotate through a protruding strip, the sliding rod can stir materials in a tank body through a stirring rod, in the rotating process of the lead screw, a lifting assembly can drive the sliding rod to ascend and descend through a supporting assembly, and the sliding rod can do vertical reciprocating motion in the rotating process; and the stirring uniformity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PTA production, in particular to a PTA production device. Background Technique

[0002] PTA is the English abbreviation of purified terephthalic acid, which is an important bulk organic raw material. Its main use is to produce polyester fibers (polyester), polyester bottle chips and polyester films, and it is widely used in various aspects of the national economy such as chemical fibers, light industry, electronics, and construction, and is highly closely related to the living standards of the people.

[0003] The "synthesis production line of purified terephthalic acid" disclosed in its application number "202322406381.0" "comprises a feeding device, a reaction kettle, a crystallization separation device and a material receiving device. The feeding device is connected with a feeding pipe. The reaction kettle comprises a kettle body. The feeding pipe is communicated with the kettle body. A rotating pipe rotatably connected with the kettle body is arranged through the top of the kettle body. A driving mechanism is arranged at the top of the kettle body. A reciprocating mechanism is arranged on the kettle body. Stirring mechanisms connected with the reciprocating mechanism are arranged on both sides of the rotating pipe. The driving mechanism comprises a servo motor fixedly installed at the top of the kettle body. The output shaft of the servo motor is fixedly connected with a rotating shaft. A second gear is fixedly installed on the outer side wall of the rotating shaft. The utility model can horizontally stir the materials inside the kettle body and longitudinally stir the materials at the bottom of the kettle body at the same time, thereby improving the stirring effect, avoiding the accumulation of materials at the bottom of the kettle body, and being convenient to use".

[0004] However, the above method still has the following defects: through the driving mechanism, the reciprocating mechanism and the stirring mechanism, the materials inside the kettle body can be horizontally stirred and the materials at the bottom of the kettle body can be longitudinally stirred at the same time, but it needs to be driven by a servo motor and a cylinder respectively, which increases the energy consumption input and raises the production cost, and it is difficult to ensure the coherence of horizontal stirring and longitudinal stirring. At the same time, the rack and gear need to be placed inside the kettle body. When the materials cover the rack and gear, it is easy to cause jamming of the rack and gear. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a PTA production device, which has the advantages of low energy consumption and reduced production cost, and solves the problems raised in the above background technique.

[0006] The present utility model provides the following technical solution: A PTA production device, including a tank body, a cover plate is provided at the top end of the tank body, a protective cover is provided in the middle of the top end of the cover plate, a lead screw is provided inside the protective cover, a forward and reverse motor for driving the rotation of the lead screw is provided in the middle of the top end of the protective cover, a chute is opened inside the lead screw, a sliding rod is slidably connected inside the chute, a convex strip is provided on the surface of the sliding rod, several stirring rods are provided at the bottom of the sliding rod, a support assembly for supporting the sliding rod is provided in the middle of the sliding rod, and the lead screw is connected with a lifting assembly for controlling the lifting of the support assembly.

[0007] As a preferred technical solution of the present utility model, a discharge hopper is provided at the bottom of the tank body, a discharge valve is provided in the middle of the bottom end of the discharge hopper, two feed inlets are opened at the top of the tank body, and a feed valve is provided on one side of the feed inlet.

[0008] As a preferred technical solution of the present utility model, a support ring is provided at the top end of the tank body, a sealing gasket is snap-fitted on the surface of the support ring, the top end of the support ring is fixedly connected with the bottom end of the cover plate by bolts, and the sealing gasket is located between the support ring and the cover plate.

[0009] As a preferred technical solution of the present utility model, the support assembly includes a support plate, a bearing one for rotatably connecting with the sliding rod is provided in the middle of the support plate, a support is fixedly provided at the bottom end of the support plate, and a bearing two for rotatably connecting with the sliding rod is provided in the middle of the bottom end of the support.

[0010] As a preferred technical solution of the present utility model, rod grooves are opened in the middle of the support plate and the middle of the bottom end of the support, and the sliding rod is inserted and connected with the rod grooves.

[0011] As a preferred technical solution of the present utility model, the lifting assembly includes a sliding table, a threaded sleeve is fixedly provided in the middle of the sliding table, the threaded sleeve is threadedly connected with the lead screw, columns are fixedly provided on both sides of the bottom end of the sliding table, and the bottom ends of the columns are fixedly connected with the top end of the support plate.

[0012] As a preferred technical solution of the present utility model, sliders are fixedly provided in the middle of both sides of the sliding table, guide rails for slidably connecting with the sliders are provided on the inner wall of the protective cover, and column grooves for slidably connecting with the columns are opened on the surface of the cover plate.

[0013] As a preferred technical solution of the present utility model, a maintenance opening is opened on the surface of the protective cover, and a protective cover is fixedly installed on one side of the maintenance opening by screws.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. The positive and reverse rotation motor drives the screw rod to rotate reciprocally in the positive and reverse directions. The screw rod can drive the sliding rod to rotate through the convex strip, and the sliding rod can stir the materials inside the tank body through the stirring rod. During the rotation of the screw rod, the lifting assembly can drive the sliding rod to lift through the support assembly, enabling the sliding rod to perform vertical reciprocating motion during rotation, improving the uniformity of material stirring for PTA production. Using the positive and reverse rotation motor as the driving part can adjust the height while driving the stirring rod to rotate, improving the transmission efficiency and reducing the energy consumption and cost investment.

[0016] 2. Since the lifting and rotating movements of the stirring rod are both realized through the transmission of the screw rod, the coherence between the rotating movement and the lifting movement can be ensured. There is no need for gear and rack drive, avoiding the phenomenon of jamming. The support assembly can reinforce the sliding rod, and the sliding rod is not easily deformed. By arranging the support assembly and the lifting assembly on the cover plate, it is convenient to repair them. Brief Description of the Drawings

[0017] Figure 1 is the structural schematic diagram of the present utility model;

[0018] Figure 2 is the sectional structural schematic diagram of the present utility model;

[0019] Figure 3 is the exploded structural schematic diagram of the present utility model;

[0020] Figure 4 is the structural schematic diagram of the lifting assembly of the present utility model;

[0021] Figure 5 is the structural schematic diagram of the cover plate of the present utility model;

[0022] Figure 6 is the structural schematic diagram of the support assembly of the present utility model.

[0023] In the figure: 1, tank body; 2, discharge hopper; 3, discharge valve; 4, support ring; 5, cover plate; 6, protective cover; 7, protective cap; 8, positive and reverse rotation motor; 9, screw rod; 10, guide rail; 11, sliding rod; 12, convex strip; 13, stirring rod; 14, support assembly; 1401, support plate; 1402, bearing one; 1403, support; 1404, bearing two; 1405, rod groove; 15, lifting assembly; 1501, sliding table; 1502, threaded sleeve; 1503, slider; 1504, column; 16, gasket; 17, column groove; 18, feed inlet; 19, feeding valve. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 6 , the PTA production device, including a tank body 1, the top of the tank body 1 is fixedly installed with a cover plate 5 through bolts, the middle of the top of the cover plate 5 is welded with a protective cover 6, a lead screw 9 is rotatably connected inside the protective cover 6, a positive and negative rotation motor 8 for driving the lead screw 9 to rotate is arranged in the middle of the top of the protective cover 6, the output shaft of the positive and negative rotation motor 8 is connected to the top of the lead screw 9, a chute is opened inside the lead screw 9, a sliding rod 11 is slidably connected inside the chute, a convex strip 12 is fixedly arranged on the surface of the sliding rod 11, and a plurality of stirring rods 13 are welded at the bottom of the sliding rod 11. By driving the lead screw 9 to rotate back and forth in a positive and negative direction by the positive and negative rotation motor 8, the lead screw 9 can transmit torque to the sliding rod 11 through the convex strip 12, which can drive the sliding rod 11 to rotate. The sliding rod 11 can stir the materials inside the tank body 1 through the stirring rods 13. A support assembly 14 for supporting the sliding rod 11 is arranged in the middle of the sliding rod 11, and the lead screw 9 is connected with a lifting assembly 15 for controlling the lifting of the support assembly 14. During the rotation of the lead screw 9, the rotational motion can be converted into the linear motion of the lifting assembly 15. The lifting assembly 15 can drive the sliding rod 11 to lift through the support assembly 14, so that the sliding rod 11 can move back and forth vertically during rotation, and the bottom of the tank body 1 can be stirred, improving the uniformity of stirring;

[0026] In this embodiment, preferably, the support assembly 14 includes a support plate 1401. A bearing one 1402 for rotatably connecting with the sliding rod 11 is arranged in the middle of the support plate 1401. A support 1403 is fixedly arranged at the bottom end of the support plate 1401. A bearing two 1404 for rotatably connecting with the sliding rod 11 is arranged in the middle of the bottom end of the support 1403. Rod grooves 1405 are opened in the middle of the support plate 1401 and the middle of the bottom end of the support 1403. The sliding rod 11 is inserted and connected with the rod grooves 1405. The sliding rod 11 can be passed through the rod grooves 1405. The support plate 1401 and the support 1403 increase the fulcrum of the sliding rod 11, improving the stability of the sliding rod 11. The sliding rod 11 is not easy to shake. The bearing one 1402 and the bearing two 1404 can ensure the rotational movement of the sliding rod 11 and prevent the torque of the sliding rod 11 from being transmitted to the support plate 1401 and the support 1403;

[0027] In this embodiment, preferably, the lifting assembly 15 includes a slide table 1501. A threaded sleeve 1502 is fixedly provided in the middle of the slide table 1501. The threaded sleeve 1502 is threadedly connected to the lead screw 9. Columns 1504 are fixedly provided on both sides of the bottom end of the slide table 1501. The bottom ends of the columns 1504 are fixedly connected to the top end of the support plate 1401. The rotational motion of the lead screw 9 can be converted into the linear motion of the slide table 1501 through the threaded sleeve 1502. The slide table 1501 can drive the support plate 1401 to lift through the columns 1504. Sliders 1503 are fixedly provided in the middle of both sides of the slide table 1501. Guide rails 10 slidably connected to the sliders 1503 are provided on the inner wall of the protective cover 6. The slide table 1501 can be guided through the sliders 1503 and the guide rails 10, preventing the slide table 1501 from tilting. Column grooves 17 slidably connected to the columns 1504 are provided on the surface of the cover plate 5. The columns 1504 can be guided through the column grooves 17, ensuring the vertical movement of the columns 1504;

[0028] In this embodiment, preferably, a discharge hopper 2 is provided at the bottom of the tank body 1. A discharge valve 3 is provided in the middle of the bottom end of the discharge hopper 2. By opening the discharge valve 3, the discharge hopper 2 can conduct the flow of materials, facilitating the discharge of materials. Two feed ports 18 are provided at the top of the tank body 1. A feed valve 19 is provided on one side of the feed port 18. Through the feed valve 19, materials can be fed into the tank body 1. A support ring 4 is provided at the top end of the tank body 1. A sealing gasket 16 is snap-fitted on the surface of the support ring 4. The top end of the support ring 4 is fixedly connected to the bottom end of the cover plate 5 through bolts. The sealing gasket 16 is located between the support ring 4 and the cover plate 5. The support ring 4 can support the cover plate 5, and the sealing gasket 16 can seal between the support ring 4 and the cover plate 5;

[0029] In this embodiment, preferably, a maintenance opening is provided on the surface of the protective cover 6. A protective cover 7 is fixedly installed on one side of the maintenance opening through screws. By opening the protective cover 7, the inside of the protective cover 6 can be maintained and repaired through the maintenance opening.

[0030] During use, the staff first inputs the materials required for PTA production into the tank body 1 through the feed valve 19, and then drives the lead screw 9 through the forward and reverse motor 8. During the process of driving the lead screw 9, the staff can connect the forward and reverse motor 8 to the motor controller, and through the motor controller, the forward and reverse motor 8 is commanded to drive the lead screw 9 to rotate forward and backward reciprocally. The lead screw 9 can transfer the torque to the slide bar 11 through the convex strip 12, driving the slide bar 11 to rotate. The slide bar 11 can stir the materials inside the tank body 1 through the stirring rod 13.

[0031] During the rotation of the lead screw 9, the threaded sleeve 1502 of the lifting assembly 15 can convert the rotational motion into the linear motion of the sliding table 1501. The sliding table 1501 can drive the support plate 1401 to lift through the column 1504. During the rotation of the sliding rod 11, it can perform vertical reciprocating motion, which can realize the stirring at the bottom of the tank body 1, improve the uniformity of material stirring. Both the lifting motion and the rotational motion are realized through the lead screw 9, which can ensure the coherence of the rotational motion and the lifting motion and improve the transmission efficiency. The support assembly 14 can increase the fulcrum of the sliding rod 11 through the support plate 1401 and the support 1403, improve the stability of the sliding rod 11, and the sliding rod 11 is not easy to shake. After the mixing is completed, open the discharge valve 3, and the discharge hopper 2 can divert the material, and then the material can be discharged. The staff loosens the bolts fixing the cover plate 5, and the cover plate 5 can be disassembled, which is convenient for maintenance activities and can clean the inside of the tank body 1.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PTA production device, comprising a tank body (1), characterized in that: A cover plate (5) is provided at the top of the tank body (1). A protective cover (6) is provided in the middle of the top of the cover plate (5). A lead screw (9) is provided inside the protective cover (6). A forward and reverse motor (8) for driving the rotation of the lead screw (9) is provided in the middle of the top of the protective cover (6). A chute is provided inside the lead screw (9), and a slide bar (11) is slidably connected inside the chute. A rib (12) is provided on the surface of the slide bar (11). A plurality of stirring rods (13) are provided at the bottom of the slide bar (11). A support assembly (14) for supporting the slide bar (11) is provided in the middle of the slide bar (11). The lead screw (9) is connected to a lifting assembly (15) for controlling the lifting of the support assembly (14).

2. The PTA production device according to claim 1, characterized in that: A discharge hopper (2) is provided at the bottom of the tank body (1). A discharge valve (3) is provided in the middle of the bottom end of the discharge hopper (2). Two feed inlets (18) are provided at the top of the tank body (1), and a feed valve (19) is provided on one side of the feed inlet (18).

3. The PTA production device according to claim 1, characterized in that: A support ring (4) is provided at the top of the tank body (1). A sealing gasket (16) is snap-fitted on the surface of the support ring (4). The top end of the support ring (4) is fixedly connected to the bottom end of the cover plate (5) by bolts, and the sealing gasket (16) is located between the support ring (4) and the cover plate (5).

4. The PTA production device according to claim 1, characterized in that: The support assembly (14) includes a support plate (1401). A bearing one (1402) for rotatably connecting with the slide bar (11) is provided in the middle of the support plate (1401). A support (1403) is fixedly provided at the bottom end of the support plate (1401). A bearing two (1404) for rotatably connecting with the slide bar (11) is provided in the middle of the bottom end of the support (1403).

5. The PTA production device according to claim 4, characterized in that: Rod grooves (1405) are provided in the middle of the support plate (1401) and the middle of the bottom end of the support (1403), and the slide bar (11) is inserted into the rod grooves (1405).

6. The PTA production device according to claim 4, characterized in that: The lifting assembly (15) includes a slide table (1501). A threaded sleeve (1502) is fixedly provided in the middle of the slide table (1501). The threaded sleeve (1502) is threadedly connected to the lead screw (9). Columns (1504) are fixedly provided on both sides of the bottom end of the slide table (1501), and the bottom ends of the columns (1504) are fixedly connected to the top end of the support plate (1401).

7. The PTA production device according to claim 6, characterized in that: Sliders (1503) are fixedly provided in the middle of both sides of the slide table (1501). Guide rails (10) for slidably connecting with the sliders (1503) are provided on the inner wall of the protective cover (6). Column grooves (17) for slidably connecting with the columns (1504) are provided on the surface of the cover plate (5).

8. The PTA production device according to claim 1, characterized in that: An inspection opening is provided on the surface of the protective cover (6), and a protective cover (7) is fixedly installed on one side of the inspection opening by screws.

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