Preparation device for polyethylene glycol terephthalate plastic

Abstract

The preparation device comprises a tank body, a partition plate is arranged in the tank body, the partition plate is fixedly connected with the inner walls of the four sides of the tank body, the tank body is divided into a melting cavity and a polycondensation cavity by the partition plate, two discharging openings are formed in the partition plate, and the melting cavity is communicated with the polycondensation cavity. And the inner walls of the front side and the rear side of the polycondensation cavity are jointly and rotationally connected with two rotating shafts, swing plates are fixedly connected to the two rotating shafts, the inner walls of the front side and the rear side of the tank body are jointly and fixedly connected with a first arc-shaped block, a first arc-shaped groove is formed in the first arc-shaped block, and two first arc-shaped rods are slidably connected into the first arc-shaped groove. According to the device, polyethylene glycol terephthalate plastic generated after polycondensation can be changed into four uniform long strips, the plastic obtained after polycondensation can be easily discharged through the pushing assembly, and meanwhile, the plastic can be preliminarily slit during discharging, so that the preparation efficiency of the plastic is improved, and the time for subsequent slitting is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of polyethylene terephthalate plastic preparation, in particular to a preparation device for polyethylene terephthalate plastic. Background Art

[0002] Polyethylene terephthalate is made by ester exchange of dimethyl terephthalate and ethylene glycol or esterification of terephthalic acid and ethylene glycol to synthesize dihydroxyethyl terephthalate, and then polycondensation reaction. It is a crystalline saturated polyester, a milky white or light yellow, highly crystalline polymer with good mechanical properties, impact strength is 3 to 5 times that of other films, and folding resistance is good.

[0003] In the process of polyethylene terephthalate production, it is usually necessary to add phthalic acid and ethylene glycol in a certain proportion to an esterification reactor for esterification reaction, and then transfer the organic matter obtained by the esterification reaction to a polycondensation container for polycondensation reaction, so as to obtain polyethylene terephthalate. In the prior art, when performing the polycondensation reaction, it is necessary to first add the organic matter of the esterification reaction to melt, and then with continuous heating, the material is polycondensed to finally obtain polyethylene terephthalate plastic. Then, since the plastic after the polycondensation reaction is in a solid state, it generally adheres to the polycondensation tank and forms a whole. As a result, after the polycondensation reaction is completed, it is not easy to take out the plastic, and the volume of the taken out plastic is too large to be used directly, and it is also necessary to cut it into smaller plastic particles, which not only greatly reduces the processing efficiency of the plastic, but also increases the number of subsequent cuttings. Therefore, it is necessary to design a preparation device for polyethylene terephthalate plastic to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose a preparation device for polyethylene terephthalate plastic. The device can transform the polyethylene terephthalate plastic produced after polycondensation into four uniform long strips, and the polycondensed plastic can be easily discharged by pushing the component. At the same time, the plastic can be preliminarily cut during discharge, thereby improving the preparation efficiency of the plastic and reducing the time used for subsequent cutting.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A preparation device for polyethylene terephthalate plastic, comprising a tank body, a partition is provided in the tank body, the partition is fixedly connected to the inner walls of the four sides of the tank body, the partition divides the tank body into a melting chamber and a condensation chamber, the partition is provided with two blanking openings, the front and rear inner walls of the condensation chamber are rotatably connected to two rotating shafts, and the two rotating shafts are fixedly connected to a swing plate, the front and rear inner walls of the tank body are fixedly connected to a first arc block, a first arc groove is provided in the first arc block, two first arc rods are slidably connected in the first arc groove, an electromagnet is provided in the first arc groove, the adjacent sides of the electromagnet and the two first arc rods are elastically connected by a first spring, the two first arc rods are fixedly connected to the corresponding swing plates, a plurality of vertical plates are provided at the inner bottom of the condensation chamber, a uniform heating component is provided in the melting chamber, and electric heating plates are embedded on the left and right inner walls of the condensation chamber and the melting chamber.

[0007] Preferably, the uniform heating component includes a rotating rod rotatably connected to the inner walls on the left and right sides of the melting chamber, and the adjacent sides of the two rotating rods are commonly fixedly connected with a roller, and the roller is a mesh structure. A driving motor is installed on the left side of the tank body, and the end of the output shaft of the driving motor is fixedly connected to the rotating rod. An adding port is provided on the inner top of the tank body, and a cover plate is rotatably connected to the upper end of the tank body, an opening is provided on the roller, a connecting block is provided on the roller, a sealing plate is provided on the opening, a pneumatic rod is installed on the connecting block, and the telescopic end of the pneumatic rod is fixedly connected to the sealing plate.

[0008] Preferably, it also includes a pushing assembly, which includes a first threaded rod arranged on the rear side of the tank body, multiple rectangular openings on the inner walls of the front and rear sides of the tank body, multiple rectangular openings on the front side are each provided with a sealing plug, and multiple rectangular openings on the rear side are each sealed and slidably connected with multiple pushing blocks, the rear sides of the multiple pushing blocks are commonly fixedly connected with a moving plate, the first threaded rod passes through the moving plate, the moving plate is threadedly connected to the first threaded rod, the first threaded rod is provided with a second gear, the rear side of the tank body is rotatably connected with a short rod, and the short rod is provided with a second incomplete gear.

[0009] Preferably, it also includes a slitting assembly, which includes a mounting plate arranged on the front side of the tank body, a second threaded rod is rotatably connected to the mounting plate, a threaded sleeve is threadedly connected to the second threaded rod, a pressure plate is fixedly connected to the lower end of the threaded sleeve, a cutting knife is fixedly connected to the lower end of the pressure plate, a vertical rod is rotatably connected to the upper end of the mounting plate, a first incomplete gear is provided on the vertical rod, a first gear is provided on the second threaded rod, and a support plate is fixedly connected to the front side of the tank body.

[0010] Preferably, the rotating rod on the right side extends to the outside and is fixedly connected to the third gear, the right side of the tank body is rotatably connected to a thin rod, and the thin rod is provided with a fourth gear, and the right side of the tank body is fixedly connected to two fixed blocks, and the two fixed blocks are jointly penetrated and rotatably connected to a cross bar, and the cross bar and the thin rod are both provided with second bevel gears that mesh with each other, and the cross bar and the short rod are transmission-connected by a second transmission assembly, and a transmission rod is rotatably connected to the mounting plate, and the transmission rod and the vertical rod are transmission-connected by a first transmission assembly, and the transmission rod and the cross bar are both provided with first bevel gears that are mutually internal.

[0011] Preferably, a threaded layer is provided on the cross bar, a conductive block is threadedly connected to the threaded layer of the cross bar, and two resistor sheets are embedded on the right inner wall of the tank body.

[0012] Preferably, a material unloading assembly is provided on the front side of the support plate, and the material unloading assembly includes an inclined plate rotatably connected to the front side of the support plate, a plurality of support columns are fixedly connected to the lower end of the tank body, a placement plate is commonly fixedly connected to the front sides of the plurality of support columns, a collection box is placed on the upper end of the placement plate, and a second arc block is fixedly connected to the lower end of the support plate, a second arc groove is provided in the second arc block, a second arc rod is slidably connected in the second arc groove, the second arc rod is elastically connected to the inner wall of the second arc groove by a second spring, and the second arc rod is fixedly connected to the inclined plate.

[0013] Preferably, a conductive rod is provided on the rotating rod, and a conductive sheet matching the conductive rod is installed on the right side of the tank body.

[0014] The present invention has the following beneficial effects:

[0015] 1. Compared with the prior art, by setting a uniform heating component, when the driving motor runs clockwise, the product of the esterification reaction in the drum will be uniformly melted and fall into the polycondensation chamber for polycondensation, and four vertical plates are provided at the inner bottom of the polycondensation chamber, so as to separate the polycondensed plastic into four cuboids, thereby avoiding the situation that the polycondensed plastic is too large and difficult to cut later;

[0016] 2. Compared with the prior art, the arrangement of two swinging plates can intermittently switch the electromagnet on and off during the polycondensation of the product, so that the two swinging plates can continuously rotate relative to or opposite to each other, so that the molten product can evenly fall between the multiple vertical plates, ensuring that the size of the plastic after polycondensation is uniform;

[0017] 3. Compared with the prior art, by setting the pusher assembly, after the polycondensation reaction is completed, the output shaft of the driving motor can be rotated counterclockwise to continuously push out multiple plastic strips, thereby avoiding the situation where the plastic temperature is too high and it is difficult to take out, so that the tank can be quickly put into use again;

[0018] 4. Compared with the prior art, the slitting assembly is set so that when a plastic strip is pushed outward, the slitting assembly will be intermittently moved down to perform preliminary slitting on the plastic strip, thereby slitting the plastic strip into smaller volumes and reducing the number of subsequent plastic slitting times;

[0019] 5. Compared with the prior art, during the slitting process, the current passing through the second spring will be constantly changed, so that the inclined plate will continuously swing up and down, and the slid plastic can be evenly spread in the collection box.

[0020] In summary, the present invention provides a uniform heating component, and when the drive motor runs clockwise, the esterification reaction product in the drum can be uniformly melted and fall into the polycondensation chamber. The four vertical plates at the bottom of the polycondensation chamber divide the polycondensed plastic into four rectangular parallelepipeds, avoiding the difficulty of subsequent cutting due to the excessive size of the polycondensed plastic. The two swing plates are set up, and when the product is polycondensed, the electromagnet intermittently turns on and off the power to make the swing plates rotate relative to or opposite to each other, ensuring that the molten product falls evenly between the vertical plates, and ensuring that the size of the plastic after polycondensation is uniform. After the polycondensation reaction is completed, the pusher component can push out multiple plastic strips by driving the output shaft of the motor counterclockwise to avoid the plastic temperature being too high and difficult to take out, so that the tank can be quickly put into use again. The cutting component intermittently moves down during the plastic strip pushing process to perform preliminary cutting, reducing the number of subsequent cutting times, and the current size is constantly changed during cutting to make the inclined plate swing up and down, so that the cut plastic is evenly spread in the collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a device for preparing polyethylene terephthalate plastics proposed by the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0023] Figure 3 for Figure 1 Front section view;

[0024] Figure 4 for Figure 3 A partial enlarged view of the

[0025] Figure 5 It is a schematic diagram of the structure of the blanking component.

[0026] In the figure: 1 tank body, 2 pusher block, 3 moving plate, 4 first threaded rod, 5 driving motor, 6 cover plate, 7 fixing block, 8 first bevel gear, 9 transmission rod, 10 first transmission assembly, 11 mounting plate, 12 first incomplete gear, 13 first gear, 14 second threaded rod, 15 threaded sleeve, 16 pressing plate, 17 cutting knife, 18 rectangular opening, 19 supporting plate, 20 inclined plate, 21 collecting box, 22 second gear, 23 short rod, 24 second incomplete gear, 25 second transmission Moving assembly, 26 third gear, 27 fourth gear, 28 rotating rod, 29 thin rod, 30 second bevel gear, 31 conductive sheet, 32 conductive rod, 33 cross bar, 34 conductive block, 35 resistor, 36 heating plate, 37 vertical plate, 38 swing plate, 39 rotating shaft, 40 partition, 41 blanking port, 42 roller, 43 sealing plate, 44 pneumatic rod, 45 first arc block, 46 first arc rod, 47 electromagnet, 48 first spring, 49 second arc rod, 50 second spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] Reference Figure 1-Figure 5 A preparation device for polyethylene terephthalate plastics, comprising a tank body 1, a partition 40 is arranged in the tank body 1, the partition 40 is fixedly connected to the inner walls of the four sides of the tank body 1, the partition 40 divides the tank body 1 into a melting chamber and a polycondensation chamber, the partition 40 is provided with two blanking ports 41, the inner walls of the front and rear sides of the polycondensation chamber are rotatably connected to two rotating shafts 39, the two rotating shafts 39 are fixedly connected to a swing plate 38, the inner walls of the front and rear sides of the tank body 1 are fixedly connected to a first arc block 45, the first arc block 45 is provided with a first arc groove, the first arc groove is slidably connected to two first arc rods 46, the first arc groove is provided with an electromagnet 47, the adjacent sides of the electromagnet 47 and the two first arc rods 46 are elastically connected by a first spring 48 The tank body 1 is connected with the second tank body 1 and the second tank body 1 is connected with the second tank body 1 and the second tank body 1 is connected with the second tank body 1. The first arc-shaped rods 46 are fixedly connected with the corresponding swing plates 38. The inner bottom of the condensation chamber is provided with a plurality of vertical plates 37. The melting chamber is provided with a uniform heating component. The inner walls of the left and right sides of the condensation chamber and the melting chamber are both embedded with electric heating plates 36. The rotating rod 28 is provided with a conductive rod 32. A conductive sheet 31 matching the conductive rod 32 is installed on the right side of the tank body 1. The conductive rod 32 and the conductive sheet 31 constitute a conductive switch. A power supply is provided on the tank body 1. The power supply, the conductive switch and the electromagnet 47 constitute a loop through a wire. The two first arc-shaped rods 46 are both made of magnetic material. The adjacent sides of the two first arc-shaped rods 46 are attracted to each other by opposite sexes. Therefore, after the electromagnet 47 is energized, a repulsive force can be generated on the two first arc-shaped rods 46.

[0029] Among them, the uniform heating component includes a rotating rod 28 rotatably connected to the inner walls on the left and right sides of the melting chamber, and the adjacent sides of the two rotating rods 28 are fixedly connected with a roller 42, and the roller 42 is a mesh structure. A driving motor 5 is installed on the left side of the tank body 1, and the end of the output shaft of the driving motor 5 is fixedly connected to the rotating rod 28. An adding port is provided at the inner top of the tank body 1, and a cover plate 6 is rotatably connected to the upper end of the tank body 1. An opening is provided on the roller 42, and a connecting block is provided on the roller 42. A sealing plate 43 is provided on the opening, and a pneumatic rod 44 is installed on the connecting block. The telescopic end of the pneumatic rod 44 is fixedly connected to the sealing plate 43.

[0030] It also includes a pushing assembly, which includes a first threaded rod 4 arranged on the rear side of the tank body 1, multiple rectangular openings 18 are provided on the inner walls of the front and rear sides of the tank body 1, and the multiple rectangular openings 18 on the front side are provided with sealing plugs, and the multiple rectangular openings 18 on the rear side are sealed and slidably connected with multiple pushing blocks 2, and the rear sides of the multiple pushing blocks 2 are commonly fixedly connected with a moving plate 3, the first threaded rod 4 penetrates the moving plate 3, and the moving plate 3 is threadedly connected to the first threaded rod 4, the thread layer on the first threaded rod 4 is a reciprocating thread layer, and the first threaded rod 4 is provided with a second gear 22, and the rear side of the tank body 1 is rotatably connected with a short rod 23, and the short rod 23 is provided with a second incomplete gear 24.

[0031] Among them, it also includes a slitting assembly, which includes a mounting plate 11 arranged on the front side of the tank body 1, and a second threaded rod 14 is rotatably connected to the mounting plate 11, and the threaded layer on the second threaded rod 14 is a reciprocating threaded layer. When the second threaded rod 14 rotates, the threaded sleeve 15 moves up and down once, and the second threaded rod 14 is threadedly connected to the threaded sleeve 15, and the lower end of the threaded sleeve 15 is fixedly connected to a pressing plate 16, and the lower end of the pressing plate 16 is fixedly connected to a cutting knife 17, and the upper end of the mounting plate 11 is rotatably connected to a vertical rod, and a first incomplete gear 12 is provided on the vertical rod, and a first gear 13 is provided on the second threaded rod 14, and a support plate 19 is fixedly connected to the front side of the tank body 1, when the first incomplete gear 12 is meshed with the first gear 13, the second incomplete gear 24 is not meshed with the second gear 22, and when the first incomplete gear 12 is not meshed with the first gear 13, the second incomplete gear 24 is meshed with the second gear 22.

[0032] Among them, the rotating rod 28 located on the right side extends to the outside and is fixedly connected to the third gear 26. The right side of the tank body 1 is rotatably connected to a thin rod 29, and a fourth gear 27 is provided on the thin rod 29. The right side of the tank body 1 is fixedly connected to two fixed blocks 7. The two fixed blocks 7 are jointly penetrated and rotatably connected to a cross bar 33. The cross bar 33 and the thin rod 29 are both provided with second bevel gears 30 that mesh with each other. The cross bar 33 and the short rod 23 are connected by a second transmission assembly 25. The second transmission assembly 25 includes a second sprocket arranged on the cross bar 33 and the short rod 23. The two second sprockets are connected by a second chain transmission. The mounting plate 11 is rotatably connected to a transmission rod 9. The transmission rod 9 is connected to the vertical rod by a first transmission assembly 10. The first transmission assembly 10 includes a first sprocket arranged on the transmission rod 9 and the vertical rod. The two first sprockets are connected by a first chain transmission. The transmission rod 9 and the cross bar 33 are both provided with first bevel gears 8 that are mutually internal.

[0033] Among them, the cross bar 33 is provided with a threaded layer, and the threaded layer part of the cross bar 33 is threadedly connected with a conductive block 34. Two resistors 35 are embedded on the right inner wall of the tank body 1. The left sides of the two resistors 35 are connected with wires. The power supply, the two resistors 35, the conductive block 34 and the second spring 50 form a loop through the wires. After the second spring 50 is energized, according to the electromagnetic effect, each coil of the second spring 50 uniformly generates a magnetic field, and the magnetic fields generated by every two adjacent coils are in opposite directions. Every two adjacent coils attract each other, so that the second spring 50 contracts. A material unloading assembly is provided on the front side of the support plate 19, and the material unloading assembly includes an inclined plate 20 rotatably connected to the front side of the support plate 19, a plurality of support columns are fixedly connected to the lower end of the tank body 1, and a placement plate is fixedly connected to the front sides of the plurality of support columns, and a collection box 21 is placed on the upper end of the placement plate, and a second arc block is fixedly connected to the lower end of the support plate 19, a second arc groove is provided in the second arc block, and a second arc rod 49 is slidably connected in the second arc groove, and the second arc rod 49 is elastically connected to the inner wall of the second arc groove by a second spring 50, and the second arc rod 49 is fixedly connected to the inclined plate 20.

[0034] The functional principle of the present invention can be explained through the following operation mode: when producing polyethylene terephthalate plastic, first open the cover plate 6, and open the opening on the drum 42 by contracting the pneumatic rod 44, put the product of the esterification reaction of terephthalic acid and ethylene glycol into the drum 42, and then stretch the pneumatic rod 44 to close the opening, and the staff closes the cover plate 6, starts the multiple electric heating plates 36 and the driving motor 5, so that the output shaft of the driving motor 5 rotates clockwise, and drives the drum 42 to rotate through the two rotating rods 28;

[0035] The operation of the two electric heating plates 36 will heat the product of the esterification reaction. After the product is melted, it will fall between the multiple vertical plates 37 below through the drop port 41. During the rotation of the rotating rod 28, the conductive rod 32 intermittently contacts the conductive sheet 31, so that the electromagnet 47 is intermittently powered on and off. When the electromagnet 47 is powered on, the electromagnet 47 exerts a repulsive force on the two first arc-shaped rods 46, causing the two first arc-shaped rods 46 to rotate in opposite directions. When the electromagnet 47 is powered off, under the elastic action of the two first springs 48, the two swing plates 38 first rotate towards each other. Since the molten product will first fall on the swing plate 38 and then flow down through the swing plate 38, the two swing plates 38 will continuously swing, so that the molten product will evenly fall between the multiple vertical plates 37, so that after the subsequent polycondensation reaction, the size of the solidified plastic can be kept consistent.

[0036] It is worth mentioning that, since there is a one-way bearing between the thin rod 29 and the third gear 26, the clockwise rotation of the rotating rod 28 will drive the fourth gear 27 to rotate, and the third gear 26 will rotate, but will not drive the thin rod 29 to rotate;

[0037] When the polycondensation reaction is completed, the plastic between the multiple vertical plates 37 will solidify. At this time, the staff removes the multiple sealing plugs and controls the output shaft of the driving motor 5 to rotate counterclockwise. At this time, the thin rod 29 is driven to rotate through the third gear 26 and the fourth gear 27. Since the two second bevel gears 30 are in a meshing state, the cross bar 33 is driven to rotate. Since the two first bevel gears 8 are in a meshing state, the transmission rod 9 is rotated, and then the vertical rod and the short rod 23 are driven to rotate through the first transmission assembly 10 and the second transmission assembly 25, so that the first incomplete gear 12 and the second incomplete gear 24 are rotated;

[0038] In the initial state, the second incomplete gear 24 will first mesh with the second gear 22. At this time, the rotation of the short rod 23 will drive the first threaded rod 4 to rotate, so that the moving plate 3 drives the multiple pusher blocks 2 to move forward, and pushes the solidified plastic forward. At this time, the first incomplete gear 12 is not meshed with the first gear 13. After moving a certain distance, the second incomplete gear 24 is not meshed with the second gear 22. At this time, the first incomplete gear 12 is meshed with the first gear 13. The rotation of the vertical rod drives the second threaded rod 14 to rotate, so that the threaded sleeve 15 drives the cutting knife 17 to move down first and then up, thereby cutting the plastic into particles of a certain size. With the subsequent operation of the driving motor 5, the plastic will be cut into particles of a certain size while being pushed out and fall into the collection box.

[0039] During the rotation of the cross bar 33, the conductive block 34 will continuously move forward and backward, so that the length of the two resistors 35 connected to the circuit will continuously change. When the conductive block 34 moves backward, the length of the resistor 35 connected to the circuit will increase, thereby reducing the current passing through the second spring 50, thereby reducing the contraction degree of the second spring 50, causing the inclined plate 20 to rotate upward. When the conductive block 34 moves forward, the length of the resistor 35 connected to the circuit will decrease, thereby increasing the current passing through the second spring 50, thereby increasing the contraction degree of the second spring 50, causing the inclined plate 20 to rotate downward, so that the cut plastic will be evenly spread in the collection box 21.

[0040] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for preparing polyethylene terephthalate plastic, comprising a tank (1), characterized in that: A partition (40) is provided inside the tank body (1), and the partition (40) is fixedly connected to the inner walls of the four sides of the tank body (1). The partition (40) divides the tank body (1) into a melting chamber and a condensation chamber. Two blanking openings (41) are provided on the partition (40). The inner walls on the front and rear sides of the condensation chamber are rotatably connected to two rotating shafts (39), and the two rotating shafts (39) are fixedly connected to a swing plate (38). The inner walls on the front and rear sides of the tank body (1) are fixedly connected to a first arc block (45), and the first arc block (45) has a plurality of inner walls. A first arc groove is provided, in which two first arc rods (46) are slidably connected, an electromagnet (47) is provided in the first arc groove, and the adjacent sides of the electromagnet (47) and the two first arc rods (46) are elastically connected through a first spring (48), and the two first arc rods (46) are fixedly connected to the corresponding swing plates (38), and a plurality of vertical plates (37) are provided at the inner bottom of the condensation chamber, and a uniform heating component is provided in the melting chamber, and electric heating plates (36) are embedded on the inner walls of the left and right sides of the condensation chamber and the melting chamber.

2. The device for preparing polyethylene terephthalate plastic according to claim 1, characterized in that: The uniform heating component comprises a rotating rod (28) rotatably connected to the inner walls of the left and right sides of the melting chamber, and the adjacent sides of the two rotating rods (28) are fixedly connected to a roller (42), and the roller (42) is a mesh structure. A driving motor (5) is installed on the left side of the tank body (1), and the output shaft end of the driving motor (5) is fixedly connected to the rotating rod (28). An addition port is provided at the inner top of the tank body (1), and a cover plate (6) is rotatably connected to the upper end of the tank body (1). An opening is provided on the roller (42), and a connecting block is provided on the roller (42). A sealing plate (43) is provided on the opening, and a pneumatic rod (44) is installed on the connecting block, and the telescopic end of the pneumatic rod (44) is fixedly connected to the sealing plate (43).

3. The device for preparing polyethylene terephthalate plastic according to claim 2, characterized in that: The invention also comprises a pusher assembly, which comprises a first threaded rod (4) arranged at the rear side of the tank body (1); the inner walls of the front and rear sides of the tank body (1) are each provided with a plurality of rectangular openings (18); the plurality of rectangular openings (18) located at the front side are each provided with a sealing plug; the plurality of rectangular openings (18) located at the rear side are each sealed and slidably connected with a plurality of pusher blocks (2); the rear sides of the plurality of pusher blocks (2) are commonly fixedly connected with a movable plate (3); the first threaded rod (4) passes through the movable plate (3); the movable plate (3) is threadedly connected with the first threaded rod (4); a second gear (22) is provided on the first threaded rod (4); the rear side of the tank body (1) is rotatably connected with a short rod (23); the short rod (23) is provided with a second incomplete gear (24).

4. The device for preparing polyethylene terephthalate plastic according to claim 3, characterized in that: The invention also comprises a slitting assembly, the slitting assembly comprising a mounting plate (11) arranged at the front side of the tank body (1), a second threaded rod (14) passing through the mounting plate (11) and rotatably connected, a threaded sleeve (15) being threadedly connected to the second threaded rod (14), a pressing plate (16) being fixedly connected to the lower end of the threaded sleeve (15), a cutting knife (17) being fixedly connected to the lower end of the pressing plate (16), a vertical rod being rotatably connected to the upper end of the mounting plate (11), a first incomplete gear (12) being provided on the vertical rod, a first gear (13) being provided on the second threaded rod (14), and a supporting plate (19) being fixedly connected to the front side of the tank body (1).

5. The device for preparing polyethylene terephthalate plastic according to claim 4, characterized in that: The rotating rod (28) on the right side extends to the outside and is fixedly connected to the third gear (26); the right side of the tank body (1) is rotatably connected to a thin rod (29); the thin rod (29) is provided with a fourth gear (27); the right side of the tank body (1) is fixedly connected to two fixed blocks (7); the two fixed blocks (7) are rotatably connected to a cross rod (33); the cross rod (33) and the thin rod (29) are both provided with second bevel gears (30) meshing with each other; the cross rod (33) and the short rod (23) are transmission-connected via a second transmission assembly (25); the mounting plate (11) is rotatably connected to a transmission rod (9); the transmission rod (9) and the vertical rod are transmission-connected via a first transmission assembly (10); the transmission rod (9) and the cross rod (33) are both provided with first bevel gears (8) with a mutual inner core.

6. The device for preparing polyethylene terephthalate plastic according to claim 5, characterized in that: The cross bar (33) is provided with a threaded layer, and the threaded layer of the cross bar (33) is threadedly connected to a conductive block (34). Two resistor sheets (35) are embedded on the right inner wall of the tank body (1).

7. The device for preparing polyethylene terephthalate plastic according to claim 4, characterized in that: A material unloading assembly is provided on the front side of the support plate (19), and the material unloading assembly includes an inclined plate (20) rotatably connected to the front side of the support plate (19); a plurality of support columns are fixedly connected to the lower end of the tank body (1); a placement plate is fixedly connected to the front sides of the plurality of support columns; a collection box (21) is placed on the upper end of the placement plate; a second arc block is fixedly connected to the lower end of the support plate (19); a second arc groove is provided in the second arc block; a second arc rod (49) is slidably connected in the second arc groove; the second arc rod (49) is elastically connected to the inner wall of the second arc groove by a second spring (50); and the second arc rod (49) is fixedly connected to the inclined plate (20).

8. The device for preparing polyethylene terephthalate plastic according to claim 5, characterized in that: A conductive rod (32) is provided on the rotating rod (28), and a conductive sheet (31) matching with the conductive rod (32) is installed on the right side of the tank body (1).

Images