A terephthalic acid dioctyl ester production plant

Abstract

This utility model relates to the technical field of dioctyl terephthalate (DTP) production equipment, and discloses a DTP production equipment, including a distillation tank. One end of the distillation tank has a discharge opening, and a discharge pipe is fixedly connected inside the discharge opening. One end of the discharge pipe has an annular groove, and an annular block is rotatably connected inside the annular groove. An annular rack is fixedly connected to the outer wall of one end of the annular block. A first motor is fixedly connected to one end of the distillation tank. This device drives the annular block to rotate through meshing with the annular rack. During rotation, the annular block drives the stirring pipe to rotate via an annular plate, and the material is discharged through an inner wall auger, improving the discharge efficiency. Furthermore, the rotation of the inner wall auger driven by the stirring pipe greatly reduces the occurrence of blockages in the DTP material during discharge.

Description

Technical Field

[0001] This utility model relates to the technical field of dioctyl terephthalate production equipment, specifically a dioctyl terephthalate production equipment. Background Technology

[0002] Crude dioctyl terephthalate (DOP) is a high-performance primary plasticizer with excellent electrical and thermal properties. Its volume resistivity is 10 to 20 times that of DOP. It has a good speed-up effect and low volatility, especially in cable materials. It is widely used in various products requiring heat resistance and high insulation. It is an ideal plasticizer for producing cable materials that can withstand temperatures of 70 degrees Celsius and other PVC products that require resistance to volatility.

[0003] Existing production methods for crude dioctyl terephthalate (CTP) require distillation equipment. However, during distillation, some residue adheres to the inner wall of the discharge port, causing blockage after a period of use. This affects subsequent discharge and significantly impacts the production efficiency of CTP. Therefore, a production device is proposed to reduce blockage during the discharge process of CTP. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a dioctyl terephthalate (DTP) production equipment that solves the problem of easy clogging during material discharge in existing technologies, and greatly improves the efficiency of material discharge in DTP production.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dioctyl terephthalate (DTP) production equipment, comprising a distillation tank, a discharge opening at one end of the distillation tank, a discharge pipe fixedly connected inside the discharge opening, an annular groove at one end of the discharge pipe, an annular block rotatably connected inside the annular groove, an annular rack fixedly connected to the outer wall of one end of the annular block, a first motor fixedly connected to one end of the distillation tank, a rotating gear fixedly connected to the output end of the first motor, and the rotating gear meshing with the annular rack;

[0008] A circular ring plate is fixedly connected inside the circular ring block, a stirring pipe is fixedly connected inside the circular ring plate, an inner wall auger is fixedly connected inside the stirring pipe, and a circular ring baffle is fixedly connected to one end of the stirring pipe.

[0009] One end of the annular block is rotatably connected to a discharge pipe, and two connecting blocks are fixedly connected to the outer wall of the discharge pipe. A connecting plate is fixedly connected between one end of each of the two connecting blocks and one end of the distillation tank.

[0010] A movable block is fixedly installed at the top of the discharge pipe, and a pipe clearing mechanism is fixedly installed at the bottom of the movable block.

[0011] Preferably, the pipe unblocking mechanism includes a second motor, a movable channel is provided at the bottom of the movable block, one end of the movable block is fixedly connected to one end of the second motor, a rotating screw is fixedly connected to the output end of the first motor, the other end of the rotating screw extends into the interior of the movable channel and is rotatably connected to the interior of the movable channel, a movable sleeve is screwed onto the outer wall of the movable screw, a movable plate is fixedly connected to the bottom end of the movable sleeve, a third motor is fixedly connected to one end of the movable plate, an unblocking shaft is fixedly connected to the output end of the third motor, and an unblocking auger is fixedly connected to the outer wall of the unblocking shaft.

[0012] Preferably, the distillation tank is fixedly connected to four corners at the bottom, and two support blocks are fixedly connected to the outer wall of the movable block, with support rods fixedly connected to the bottom of each support block.

[0013] Preferably, a switch door is fixedly installed at one end of the distillation tank, and a door handle is fixedly installed at one end of the switch door.

[0014] Preferably, an observation window is provided at one end of the door.

[0015] Preferably, the outer wall of the movable screw sleeve is slidably connected to the interior of the movable through groove.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a production equipment for dioctyl terephthalate, which has the following beneficial effects:

[0018] This dioctyl terephthalate (DTP) production equipment distills DTP in a distillation tank. After distillation, the DTP is discharged through a discharge pipe. The material first enters the mixing pipe, and upon activation of the first motor, the output of the motor drives a rotating gear. This gear, in turn, meshes with a ring rack, causing a ring block to rotate. The ring block's rotation, via a ring plate, drives the mixing pipe. An internal auger further improves discharge efficiency and significantly reduces the likelihood of blockages during the discharge process. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2This is a front view structural diagram of the pipe dredging mechanism of this utility model;

[0021] Figure 3 This is a front view schematic diagram of the rotating gear and circular rack of this utility model;

[0022] Figure 4 This is a schematic diagram of the left-side structure of the stirring pipe of this utility model.

[0023] In the diagram: 1. Distillation tank; 2. Discharge pipe; 3. Circular ring block; 4. Circular ring rack; 5. First motor; 6. Rotating gear; 7. Circular ring plate; 8. Stirring pipe; 9. Inner wall auger; 10. Circular ring baffle; 11. Discharge pipe; 12. Connecting block; 13. Connecting plate; 14. Moving block; 15. Second motor; 16. Rotating screw; 17. Moving screw sleeve; 18. Moving plate; 19. Third motor; 20. Unblocking shaft; 21. Unblocking auger; 22. Stabilizing support; 23. Support block; 24. Support rod; 25. Opening and closing door; 26. Door handle; 27. Observation window. Detailed Implementation

[0024] Please see Figure 1 , Figure 3 and Figure 4 A dioctyl terephthalate (DTP) production device includes a distillation tank 1. One end of the distillation tank 1 has a discharge opening, and a discharge pipe 2 is fixedly connected inside the discharge opening. One end of the discharge pipe 2 has an annular groove, and an annular block 3 is rotatably connected inside the annular groove. An annular rack 4 is fixedly connected to the outer wall of one end of the annular block 3. A first motor 5 is fixedly connected to one end of the distillation tank 1, and a rotating gear 6 is fixedly connected to the output end of the first motor 5. The rotating gear 6 meshes with the annular rack 4. An annular plate 7 is fixedly connected inside the annular block 3, and a stirring pipe 8 is fixedly connected inside the annular plate 7. An inner wall auger 9 is fixedly connected inside the stirring pipe 8, and an annular baffle 10 is fixedly connected to one end of the stirring pipe 8. A discharge pipe 11 is rotatably connected to one end of the annular block 3, and a fixed... Two connecting blocks 12 are connected, and a connecting plate 13 is fixedly connected to one end of each connecting block 12 and one end of the distillation tank 1. Dioctyl phthalate is distilled through the distillation tank 1. After distillation, it is discharged through the discharge pipe 2. First, the material enters the interior of the stirring pipe 8. After the first motor 5 is energized and started, the output end of the first motor 5 drives the rotating gear 6 to rotate. Through meshing with the ring rack 4, the ring block 3 is driven to rotate. During the rotation of the ring block 3, the stirring pipe 8 is driven to rotate through the ring plate 7. The material is discharged through the inner wall auger 9 to improve the discharge efficiency. Moreover, the rotation of the inner wall auger 9 driven by the stirring pipe 8 will greatly reduce the phenomenon of blockage of dioctyl phthalate material during the discharge process.

[0025] It should also be noted that a movable block 14 is fixedly installed at the top of the discharge pipe 11, and a pipe clearing mechanism is fixedly installed at the bottom of the movable block 14. The pipe clearing mechanism includes a second motor 15. A movable channel is opened at the bottom of the movable block 14. One end of the movable block 14 is fixedly connected to one end of the second motor 15. A rotating screw 16 is fixedly connected to the output end of the first motor 5. The other end of the rotating screw 16 extends into the interior of the movable channel and is rotatably connected to the interior of the movable channel. A movable screw sleeve 17 is screwed onto the outer wall of the movable screw. A movable plate 18 is fixedly connected to the bottom end of the movable screw sleeve 17. One end of the movable plate 18... A third motor 19 is fixedly connected, and a dredging shaft 20 is fixedly connected to the output end of the third motor 19. A dredging auger 21 is fixedly connected to the outer wall of the dredging shaft 20. When the second motor 15 is powered on, the output end of the second motor 15 will drive the moving screw to rotate, and drive the moving screw sleeve 17 to move through the thread. After the moving screw sleeve 17 drives the moving plate 18 and the dredging auger 21 to extend into the interior of the mixing pipe 8, the material inside the mixing pipe 8 will be further stirred when the third motor 19 is powered on, further preventing the dioctyl phthalate material from becoming blocked.

[0026] It should also be noted that stable feet 22 are fixedly connected to the four corners of the bottom of the distillation tank 1. Two support blocks 23 are fixedly connected to the outer wall of the moving block 14. Support rods 24 are fixedly connected to the bottom of the two support blocks 23 to support the position of the moving block 14 and prevent tilting or falling. A switch door 25 is fixedly installed at one end of the distillation tank 1. A door handle 26 is fixedly installed at one end of the switch door 25. An observation window 27 is opened at one end of the switch door 25 to directly observe the distillation situation inside the distillation tank 1. The outer wall of the moving screw sleeve 17 is slidably connected to the inside of the moving through groove to improve the stability when moving the moving screw sleeve 17.

[0027] In summary, when using this dioctyl terephthalate (DTP) production equipment, the distillation tank 1 first distills the DTP. After distillation, the DTP is discharged through the discharge pipe 2. The material first enters the mixing pipe 8. When the first motor 5 is energized, its output drives the rotating gear 6 to rotate. This gear, in turn, meshes with the ring rack 4, causing the ring block 3 to rotate. During rotation, the ring block 3 drives the mixing pipe 8 through the ring plate 7. The material is discharged through the inner wall auger 9, improving discharge efficiency. Then, when the second motor 15 is energized, its output drives the moving screw to rotate. This screw drives the moving sleeve 17 to move. The moving sleeve 17, along with the moving plate 18 and the unblocking auger 21, extends into the mixing pipe 8. Finally, when the third motor 19 is energized, the material inside the mixing pipe 8 is further stirred, further preventing blockage of the DTP material.

Claims

1. A terephthalic acid dioctyl ester production plant comprising a distillation tank (1), characterized in that: One end of the distillation tank (1) is provided with a discharge opening, the inside of the discharge opening is fixedly connected with a discharge pipeline (2), one end of the discharge pipeline (2) is provided with a circular groove, the inside of the circular groove is rotatably connected with a circular block (3), one end of the outer wall of the circular block (3) is fixedly connected with a circular rack (4), one end of the distillation tank (1) is fixedly connected with a first motor (5), the output end of the first motor (5) is fixedly connected with a rotating gear (6), the rotating gear (6) is engaged with the circular rack (4); The inside of the circular block (3) is fixedly connected with a circular plate (7), the inside of the circular plate (7) is fixedly connected with a stirring pipeline (8), the inside of the stirring pipeline (8) is fixedly connected with an inner wall auger (9), one end of the stirring pipeline (8) is fixedly connected with a circular baffle (10); One end of the circular block (3) is rotatably connected with a discharge pipeline (11), the outer wall of the discharge pipeline (11) is fixedly connected with two connecting blocks (12), one end of the two connecting blocks (12) and one end of the distillation tank (1) are fixedly connected with a connecting plate (13); The top end of the discharge pipeline (11) is fixedly installed with a moving block (14), the bottom end of the moving block (14) is fixedly installed with a pipeline dredging mechanism.

2. The dioctyl terephthalate production apparatus according to claim 1, characterized by: The pipeline dredging mechanism comprises a second motor (15), the bottom end of the moving block (14) is provided with a moving slot, one end of the moving block (14) is fixedly connected with one end of the second motor (15), the output end of the first motor (5) is fixedly connected with a rotating screw (16), the other end of the rotating screw (16) extends into the inside of the moving slot and is rotatably connected with the inside of the moving slot, the outer wall of the rotating screw is screwed with a moving sleeve (17), the bottom end of the moving sleeve (17) is fixedly connected with a moving plate (18), one end of the moving plate (18) is fixedly connected with a third motor (19), the output end of the third motor (19) is fixedly connected with a dredging shaft (20), the outer wall of the dredging shaft (20) is fixedly connected with a dredging auger (21).

3. A dioctyl terephthalate production apparatus according to claim 2, characterized in that: The bottom end of the distillation tank (1) is fixedly connected with a stabilizing support (22), the outer wall of the moving block (14) is fixedly connected with two supporting blocks (23), the bottom end of the two supporting blocks (23) is fixedly connected with a supporting rod (24).

4. The dioctyl terephthalate production apparatus according to claim 3, characterized by: One end of the distillation tank (1) is fixedly installed with an on-off door (25), one end of the on-off door (25) is fixedly installed with a door handle (26).

5. A dioctyl terephthalate production apparatus according to claim 4, characterized in that: One end of the on-off door (25) is provided with an observation window (27).

6. A dioctyl terephthalate production apparatus according to claim 5, characterized in that: The outer wall of the moving sleeve (17) is slidably connected with the inside of the moving slot.

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