A kind of inclined vacuum drying equipment for processing nano-modified PET materials

Abstract

The present invention relates to the technical field of drying equipment, and provides an inclined vacuum drying equipment for processing nano-modified PET materials, including drying plates, several layers of drying plates are linearly distributed along a direction perpendicular to the bottom surface of the equipment shell, the equipment shell and the drying plates are inclined, the surface of the drying plates is provided with a material trough, the high end of the material trough is provided with a feed hole, and the low end of the material trough is provided with a discharge hole; an exhaust pipe for extracting water vapor generated by drying, a plurality of ventilation holes are provided above the high end of each layer of the drying plate, a shunt pipe is fixedly installed on the ventilation hole, the shunt pipe is connected to the exhaust pipe, and the exhaust pipe is connected to a vacuum pump; a feeding pipe for adding PET particles to the material trough and a discharge pipe for discharging. The present invention is provided with multiple layers of drying plates, material troughs, ventilation holes and exhaust pipes, so that the water vapor generated by each layer of drying can be discharged in time, effectively preventing the water vapor from entering the material trough of the upper layer, and the drying effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, in particular to an inclined vacuum drying equipment for processing nano-modified PET materials. Background Art

[0002] Nano-modified PET material is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. It has excellent physical and mechanical properties in a wide temperature range, excellent electrical insulation, and even at high temperature and high frequency, its electrical properties are still good, and its fatigue resistance, friction resistance, and dimensional stability are all very good.

[0003] At present, when drying crystalline PET particles, the PET particles are piled together. Since the crystalline PET particles themselves contain water and have a strong inherent viscosity, when drying, the PET particles in the lower layer will produce a large amount of water vapor, which will pass through the PET particles in the upper layer, making it difficult to dry the PET particles in the upper layer, making their viscosity always large, the material relatively swollen, and the evaporation efficiency low, and the drying effect poor. Therefore, it is necessary to provide an inclined vacuum drying device for processing nano-modified PET materials to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an inclined vacuum drying device for processing nano-modified PET materials, aiming to solve the problems mentioned in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an inclined vacuum drying device for processing nano-modified PET materials, comprising a device housing, a frame, a vacuum pump and a heater, wherein the heater is fixedly mounted at the bottom of the device housing, and the device housing and the vacuum pump are both fixedly mounted on the frame, and the vacuum drying device further comprises:

[0006] A drying plate for drying PET particles, wherein several layers of drying plates are linearly distributed along a direction perpendicular to the bottom surface of the equipment housing, the equipment housing and the drying plates are arranged obliquely, a material trough is arranged on the surface of the drying plate, a cover plate is arranged on the material trough, a feed hole is arranged at the high end of the material trough, and a discharge hole is arranged at the low end of the material trough;

[0007] An exhaust pipe for extracting water vapor generated by drying, a plurality of ventilation holes are arranged above the high end of each drying plate, a shunt pipe is fixedly installed on the ventilation hole, the shunt pipe is connected to the exhaust pipe, and the exhaust pipe is connected to the vacuum pump;

[0008] A feeding pipe for adding PET particles into the material tank, wherein the feeding pipe is connected to the feeding hole on each layer of the material tank through a feeding connecting pipe;

[0009] A discharge pipe for discharging materials, wherein the discharge pipe is connected to the discharge hole on each layer of the material storage tank through a discharge connecting pipe;

[0010] And an anti-blocking mechanism for preventing the PET particles from sticking and blocking when entering the material trough.

[0011] As a further solution of the present invention, the anti-blocking mechanism includes a movable cross bar and a push-material telescopic rod. A movable cross bar is arranged above each layer of the drying plate, and a plurality of push-material telescopic rods are connected to the movable cross bar. A plurality of through grooves are arranged on the cover plate, and the push-material telescopic rods are inserted into the through grooves and move along the through grooves. The width of the through grooves is smaller than the diameter of the PET particles. The plurality of movable cross bars are connected by a fixed rod, and a linear drive component for driving the movable cross bar is installed in the equipment housing.

[0012] As a further solution of the present invention, the linear drive assembly includes a rotating motor, a threaded rod is coaxially fixedly connected to the output shaft of the rotating motor, a threaded hole is provided on one of the movable cross bars, the threaded rod is cooperatively connected to the threaded hole, a guide hole is provided on the movable cross bar, a guide rod is fixedly installed in the equipment housing, and the guide rod is slidably connected to the guide hole.

[0013] As a further solution of the present invention, the pushing telescopic rod includes a fixed column and a telescopic column, one end of the fixed column is connected to the movable cross bar, the other end of the fixed column is provided with a blind hole, an electromagnet is installed on the end surface of the blind hole, the telescopic column is connected to the inner wall of the blind hole in a sliding fit, the telescopic column is connected to the electromagnet through a reset spring, and the telescopic column is made of ferromagnetic material.

[0014] As a further solution of the present invention, the anti-blocking mechanism also includes a blower, which is fixedly installed on the outside of the equipment housing, and the blower is connected to the feeding pipe through a blowing pipe.

[0015] As a further solution of the present invention, the feeding pipe is smoothly connected to the feeding connecting pipe, the discharging pipe is smoothly connected to the discharging connecting pipe, and a guiding inclined surface is provided in the material holding trough near the discharging hole.

[0016] As a further solution of the present invention, a feeding sealing door is provided at the feeding end of the feeding pipe, and a valve is installed on each of the discharge connecting pipes.

[0017] As a further solution of the present invention, a plurality of guide grooves are provided on the bottom surface of each drying plate, and the water vapor generated by drying enters the ventilation holes along the guide grooves. Except for the ventilation holes on the top layer, the other ventilation holes are located between the two drying plates. In this way, the water vapor generated by drying will be discharged in time, effectively preventing the water vapor from entering the PET particles on the upper layer.

[0018] In summary, the beneficial effects of the present invention are:

[0019] The present invention arranges multiple layers of drying plates, material tanks, ventilation holes, shunt pipes and exhaust pipes, so that the water vapor generated by each layer of drying can be discharged in time, effectively preventing the water vapor from entering the material tank of the upper layer, and then the PET particles in the upper layer can be well dried, and the drying effect is good. In addition, the present invention also includes an anti-blocking mechanism for preventing the PET particles from sticking and blocking in the process of entering the material tank, so that the wet PET particles can smoothly fill the material tank, ensuring the smooth progress of the drying operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0021] Figure 1 This is a schematic diagram of the internal structure of an inclined vacuum drying equipment for processing nano-modified PET materials according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the front structure of an inclined vacuum drying equipment for processing nano-modified PET materials according to an embodiment of the present invention.

[0023] Figure 3 The present invention is a schematic structural diagram of a drying plate in an inclined vacuum drying device for processing nano-modified PET materials according to an embodiment of the present invention.

[0024] Figure 4 A schematic diagram of a partial three-dimensional structure of an inclined vacuum drying device for processing nano-modified PET materials according to an embodiment of the present invention Figure 1 .

[0025] Figure 5 A schematic diagram of a partial three-dimensional structure of an inclined vacuum drying device for processing nano-modified PET materials according to an embodiment of the present invention Figure 2 .

[0026] Figure 6 The present invention is a schematic structural diagram of a material pushing telescopic rod in an inclined vacuum drying device for processing nano-modified PET materials according to an embodiment of the present invention.

[0027] Figure 7 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0028] Figure markings: 1-equipment housing, 2-frame, 3-vacuum pump, 4-exhaust pipe, 5-diverter pipe, 6-ventilation hole, 7-feeding pipe, 8-feed connecting pipe, 9-discharge pipe, 10-discharge connecting pipe, 12-drying plate, 13-cover plate, 14-movable cross bar, 15-pushing telescopic rod, 16-fixed rod, 17-guide rod, 18-threaded rod, 19-rotating motor, 20-through groove, 21-material trough, 22-feed hole, 23-discharge hole, 24-guide groove, 25-blower, 26-blowing pipe, 151-fixed column, 152-telescopic column, 153-reset spring, 154-blind hole, 155-electromagnet. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] See also Figures 1 to 5 The embodiment of the present invention provides an inclined vacuum drying device for processing nano-modified PET materials, comprising a device housing 1, a frame 2, a vacuum pump 3 and a heater, wherein the heater is fixedly mounted at the bottom of the device housing 1, the device housing 1 and the vacuum pump 3 are both fixedly mounted on the frame 2, and the vacuum drying device further comprises:

[0032] A drying plate 12 for drying PET particles, wherein several layers of drying plates 12 are linearly distributed along a direction perpendicular to the bottom surface of the device housing 1, and the drying plates 12 are parallel to the bottom surface of the device housing 1. The device housing 1 and the drying plates 12 are both inclinedly arranged, and a material trough 21 is arranged on the surface of the drying plate 12, and a cover plate 13 is arranged on the material trough 21, and the cover plate 13 covers the material trough 21 to prevent the PET particles from escaping from the material trough 21. A feed hole 22 is arranged at the high end of the material trough 21, and a discharge hole 23 is arranged at the low end of the material trough 21. The depth of the material trough 21 is 2-3 times the diameter of the PET particles, thereby ensuring that each layer of PET particles can be well dried;

[0033] An exhaust pipe 4 for extracting water vapor generated by drying, a plurality of ventilation holes 6 are arranged above the high end of each layer of the drying plate 12, a shunt pipe 5 is fixedly installed on the ventilation hole 6, the shunt pipe 5 is connected to the exhaust pipe 4, and the exhaust pipe 4 is connected to the vacuum pump 3. Except for the ventilation holes 6 on the top layer, the other ventilation holes 6 are located between the two drying plates 12, so that the water vapor generated by drying can be discharged in time, effectively preventing the water vapor from entering the PET particles on the upper layer;

[0034] A feeding pipe 7 for adding PET particles to the material tank 21, the feeding pipe 7 is connected to the feeding hole 22 on each layer of the material tank 21 through a feeding connecting pipe 8; a discharging pipe 9 for discharging, the discharging pipe 9 is connected to the discharging hole 23 on each layer of the material tank 21 through a discharging connecting pipe 10; the feeding pipe 7 is smoothly connected to the feeding connecting pipe 8, and the discharging pipe 9 is smoothly connected to the discharging connecting pipe 10. Preferably, the feeding pipe 7 is smoothly connected to the feeding connecting pipe 8, and the discharging pipe 9 is smoothly connected to the discharging connecting pipe 10, which ensures smooth feeding and discharging. A guiding inclined surface is provided near the discharging hole 23 in the material tank 21, so that the PET particles can enter the discharging hole 23 during discharging. In addition, a feeding sealing door is provided at the feeding end of the feeding pipe 7, and a valve is installed on each of the discharging connecting pipes 10. During the drying process, the feeding sealing door and the valve are both in a closed state.

[0035] In the embodiment of the present invention, an anti-blocking mechanism is also included to prevent the PET particles from sticking and blocking when entering the material trough 21, so that the wet PET particles can smoothly fill the material trough 21. Specifically, the anti-blocking mechanism includes a moving cross bar 14 and a material pushing telescopic rod 15. A moving cross bar 14 is arranged above each layer of the drying plate 12, and a plurality of material pushing telescopic rods 15 are connected to the moving cross bar 14. A plurality of through grooves 20 are arranged on the cover plate 13. The material pushing telescopic rod 15 is inserted into the through groove 20 and moves along the through groove 20. The width of the through groove 20 is smaller than the diameter of the PET particles, and the PET particles will not overflow from the through groove 2. A plurality of the moving cross bars 14 are connected by a fixed rod 16, and a linear drive component for driving the moving cross bar 14 is installed in the device housing 1.

[0036] In an embodiment of the present invention, the linear drive assembly includes a rotating motor 19, and a threaded rod 18 is coaxially fixedly connected to the output shaft of the rotating motor 19. A threaded hole is provided on one of the moving cross bars 14, and the threaded rod 18 is connected with the threaded hole. A guide hole is provided on the moving cross bar 14, and a guide rod 17 is fixedly installed in the equipment housing 1, and the guide rod 17 is connected with the guide hole in a sliding manner. When the rotating motor 19 is started, the threaded rod 18 rotates accordingly, and the moving cross bar 14 moves, thereby carrying the pushing telescopic rod 15 to move along the through groove 20 to push the PET particles in the material trough 21.

[0037] In an embodiment of the present invention, the anti-blocking mechanism also includes a blower 25, which is fixedly installed on the outside of the equipment housing 1. The blower 25 is connected to the feeding pipe 7 through a blowing pipe 26. The connection between the blowing pipe 26 and the feeding pipe 7 is located upstream of the feed connecting pipe 8. When the feed connecting pipe 8 or the feeding pipe 7 is blocked, the blower 25 is started to make the feeding pipeline smooth.

[0038] See also Figures 1 to 7 The push-material telescopic rod 15 includes a fixed column 151 and a telescopic column 152. One end of the fixed column 151 is connected to the movable cross bar 14, and the other end of the fixed column 151 is provided with a blind hole 154. An electromagnet 155 is installed on the end surface of the blind hole 154. The telescopic column 152 is slidably connected to the inner wall of the blind hole 154. The telescopic column 152 and the electromagnet 155 are connected by a reset spring 153. The telescopic column 152 is made of ferromagnetic material. For example, the telescopic column 152 is made of iron. When the electromagnet 15 is energized, the telescopic column 152 will retract into the blind hole 154, and the telescopic column 152 cannot be inserted into the material trough 21. Preferably, a controller is provided in the embodiment of the present invention. The controller is electrically connected to the electromagnet 15, and the controller controls the electromagnet 15.

[0039] In the embodiment of the present invention, a plurality of guide grooves 24 are provided on the bottom surface of each drying plate 12, and the water vapor generated by drying enters the ventilation holes 6 along the guide grooves 24, and the water vapor generated by the lower layer of PET particles will not enter the upper layer of PET particles.

[0040] The working process of the embodiment of the present invention is as follows: when in use, open the feeding sealing door, and close the valve on the discharge connecting pipe 10, then add PET particles into the feeding pipe 7, and the PET particles will enter the material tank 21 along the feeding connecting pipe 8. At this time, turn on the rotating motor 19, so that the pushing telescopic rod 15 can reciprocate along the through groove 20. When the pushing telescopic rod 15 moves from the high end to the low end, the electromagnet 15 is powered off, and the pushing telescopic rod 15 is inserted into the material tank 21 to push the PET particles. When the pushing telescopic rod 15 moves from the low end to the high end, the electromagnet 15 is powered on, and the pushing telescopic rod 15 is not inserted into the material tank 21. In this way, after a period of time, the PET particles fill the material tank 21, and the drying operation can be carried out. After drying, open the valve on the discharge connecting pipe 10 to discharge the material.

[0041] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An inclined vacuum drying device for processing nano-modified PET materials, comprising a device housing (1), a frame (2), a vacuum pump (3) and a heater, characterized in that: The vacuum drying equipment also includes: A drying plate (12) for drying PET particles, wherein a plurality of layers of drying plates (12) are linearly distributed along a direction perpendicular to the bottom surface of the device housing (1), the device housing (1) and the drying plates (12) are arranged obliquely, a material trough (21) is arranged on the surface of the drying plate (12), a cover plate (13) is arranged on the material trough (21), a feed hole (22) is arranged at the upper end of the material trough (21), and a discharge hole (23) is arranged at the lower end of the material trough (21); An exhaust pipe (4) for extracting water vapor generated by drying, a plurality of ventilation holes (6) are provided above the high end of each drying plate (12), a shunt pipe (5) is fixedly mounted on the vent hole (6), the shunt pipe (5) is connected to the exhaust pipe (4), and the exhaust pipe (4) is connected to the vacuum pump (3); A feeding pipe (7) for adding PET particles into the material tank (21), wherein the feeding pipe (7) is connected to a feeding hole (22) on each layer of the material tank (21) via a feeding connecting pipe (8), and the depth of the material tank (21) is 2-3 times the diameter of the PET particles; A discharge pipe (9) for discharging materials, wherein the discharge pipe (9) is connected to a discharge hole (23) on each layer of the material storage tank (21) via a discharge connecting pipe (10); And an anti-blocking mechanism for preventing PET particles from sticking and clogging when entering a material storage trough (21); the anti-blocking mechanism comprises a moving cross bar (14) and a pushing telescopic rod (15), wherein a moving cross bar (14) is arranged above each layer of the drying plate (12), and a plurality of pushing telescopic rods (15) are connected to the moving cross bar (14), and a plurality of through grooves (20) are arranged on the cover plate (13), and the pushing telescopic rod (15) is inserted into the through grooves (20) and moves along the through grooves (20), wherein the width of the through grooves (20) is smaller than the diameter of the PET particles, and a plurality of the moving cross bars (14) are connected by a fixing rod (16), and a linear driving component for driving the moving cross bar (14) is installed in the device housing (1), and the pushing telescopic rod (15) comprises a fixing column (15 1) and a telescopic column (152), one end of the fixed column (151) is connected to the movable cross bar (14), the other end of the fixed column (151) is provided with a blind hole (154), an electromagnet (155) is installed on the end surface of the blind hole (154), the telescopic column (152) is connected to the inner wall of the blind hole (154) by sliding fit, the telescopic column (152) and the electromagnet (155) are connected by a reset spring (153), and the telescopic column (152) is made of ferromagnetic material; when the pusher telescopic rod (15) moves from the high end to the low end, the electromagnet (155) is powered off, the pusher telescopic rod (15) is inserted into the material trough (21) to push the PET particles, and when the pusher telescopic rod (15) moves from the low end to the high end, the electromagnet (155) is powered on, and the pusher telescopic rod (15) is not inserted into the material trough (21).

2. The inclined vacuum drying equipment for processing nano-modified PET materials according to claim 1, characterized in that: The linear drive assembly comprises a rotary motor (19), a threaded rod (18) is coaxially fixedly connected to the output shaft of the rotary motor (19), a threaded hole is provided on one of the movable cross bars (14), the threaded rod (18) is matched with the threaded hole, the movable cross bar (14) is provided with a guide hole, a guide rod (17) is fixedly installed in the device housing (1), and the guide rod (17) is slidably matched with the guide hole.

3. The inclined vacuum drying equipment for processing nano-modified PET materials according to claim 1, characterized in that: The anti-blocking mechanism further comprises a blower (25), which is fixedly mounted on the outside of the equipment housing (1), and the blower (25) is connected to the feeding pipe (7) via a blowing pipe (26).

4. The inclined vacuum drying equipment for processing nano-modified PET materials according to claim 1, characterized in that: The feeding pipe (7) is smoothly connected to the feeding connecting pipe (8), the discharging pipe (9) is smoothly connected to the discharging connecting pipe (10), and a guiding inclined surface is provided in the material holding trough (21) near the discharging hole (23).

5. The inclined vacuum drying equipment for processing nano-modified PET materials according to claim 1, characterized in that: The feeding end of the feeding pipe (7) is provided with a feeding sealing door, and each of the discharge connecting pipes (10) is installed with a valve.

6. The inclined vacuum drying equipment for processing nano-modified PET materials according to claim 1, characterized in that: The bottom surface of each drying plate (12) is provided with a plurality of guide grooves (24), and the water vapor generated by drying enters the ventilation hole (6) along the guide grooves (24).

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