Polymer slice drying device

Abstract

The invention discloses a polymer slice drying device which comprises a storage bin, a drying mechanism used for drying polymer slice particles is arranged in the storage bin, and the drying mechanism comprises a conveying pipe, a spiral conveying rod, a first notch, a second notch, a sleeve, an electric heating wire, an air blower, a first connecting pipe and a second connecting pipe. A conveying pipe is fixedly arranged in the middle of the inner side of the storage bin, a spiral conveying rod is movably arranged in the middle of the inner side of the conveying pipe through a bearing, a first notch is formed in the lower end of the outer side surface of the conveying pipe, and a second notch is formed in the upper end surface of the conveying pipe. According to the rotary drum dryer, the material falling height of a traditional rotary drum dryer can be remarkably increased, the material dispersity is improved, each material particle can have sufficient time to make contact with hot air for drying each time, drying can be completed by circulating the materials for 2-3 times, and therefore the drying efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of drying devices, in particular to a polymer chip drying device. Background Art

[0002] Common polymer chips, such as polyester chips, may require drying before processing. Polyester chips are solid particles made from a high-molecular-weight polymer (polyethylene terephthalate, PET) produced through a polycondensation reaction between terephthalic acid (PTA) and ethylene glycol (EG). These particles are pelletized and produced as transparent or milky white cylindrical pellets with a diameter of approximately 2-5 mm and a length of 3-6 mm.

[0003] Because the ester bonds in the molecular structure of polyester chips easily react with water, they must be dried to remove moisture before processing to ensure the quality of subsequent processing.

[0004] There are many such drying equipments in the prior art that can be used for polyester chips, including rotary drying equipment. However, the rotary height of such rotary drying equipment in the prior art is limited, which results in a limited falling height each time the polyester chip particles are lifted up. Generally, the falling height is only about 0.5 meters. The material falls rapidly under the action of gravity and may not fully absorb the heat of the hot air before falling to the ground, resulting in incomplete drying and low drying efficiency. Therefore, a polymer chip drying device is needed to improve this problem. Summary of the Invention

[0005] The object of the present invention is to provide a polymer chip drying device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a polymer chip drying device, comprising a storage bin, wherein a drying mechanism for drying polymer chip particles is arranged inside the storage bin, the drying mechanism comprising a transmission pipe, a spiral transmission rod, a first notch, a second notch, a sleeve, a heating wire, a blower, a first connecting pipe, and a second connecting pipe. A transmission pipe is fixedly arranged in the middle of the inner side of the storage bin, a spiral transmission rod is movably arranged in the middle of the inner side of the transmission pipe through a bearing, a first notch is provided at the lower end of the outer surface of the transmission pipe, a second notch is provided at the upper end surface of the transmission pipe, a sleeve is provided on the outer side of the transmission pipe, a plurality of heating wires are embedded in the inner side wall of the sleeve, a blower is provided on one side of the sleeve, a first connecting pipe is provided between the lower end of the blower and the sleeve, and a second connecting pipe is provided between one side of the blower surface and the sleeve.

[0007] Preferably, a discharge port is provided in the middle of the lower end of the storage bin, and a draw plate is movably provided inside the discharge port. Cylinders are fixedly provided on both sides of the surface of the discharge port, and the movable end of the cylinder is fixedly connected to the draw plate. The draw plate can be driven to move by the contraction of the cylinder. When the draw plate is opened, the polymer chip particles inside the storage bin can be discharged downward. At this time, the spiral transmission rod of the device can play a dual role. The spiral transmission rod is driven to reverse by the motor. At this time, the spiral transmission rod can play the role of discharging, which can accelerate the discharge of polymer chip particles through the discharge port. In this way, the position of the spiral transmission rod of the device and the overall structure of the device are carefully set. Not only can the spiral transmission rod be used to throw the polymer chip particles to improve the drying effect, but the spiral transmission rod can also be used for discharging, so as to solve the problem that a large amount of particulate material is easy to block the discharge port.

[0008] Preferably, the air inlet end of the blower is connected to the inside of the sleeve through the second connecting pipe, and the air outlet end of the blower is connected to the inside of the sleeve through the first connecting pipe. The blower can suck the air inside the sleeve through the second connecting pipe and blow it back to the inside of the sleeve through the first connecting pipe.

[0009] Preferably, an electric motor is fixedly provided on the upper end of the sleeve, and a power output shaft end of the electric motor is transmission-connected to the spiral transmission tube, so that the spiral transmission tube can be driven to rotate by the electric motor.

[0010] Preferably, a feed pipe is fixedly provided on one side of the upper end of the storage bin, a sealing cover is provided on the upper end of the feed pipe, and polymer chip particles that need to be dried are injected into the storage bin through the feed pipe.

[0011] Preferably, a filter is fixedly provided inside the first connecting tube and the second connecting tube at one end close to the sleeve, and the filter can prevent polymer chip particles from entering the first connecting tube or the second connecting tube.

[0012] Preferably, a drying box is fixedly provided in the middle of the first connecting pipe, and the continuously circulating hot air can be dried by the drying box, thereby taking away the moisture inside the entire device without wasting a lot of heat. How the drying box dries the water vapor in the air is a mature existing technology, so this application document will not elaborate on it in detail.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention utilizes hot air and continuously falling polymer chip particles to blow against each other, and the falling height of the material is high, thereby improving the dispersion of the material, so that each material particle can have sufficient time to contact with the hot air for drying each time, thereby improving the drying effect and drying efficiency.

[0015] 2. Compared with the traditional method of directly turning all the polymer chip particles upside down, the spiral transmission rod of the device can transmit the polymer chip particles upward layer by layer and throw them out, so that the polymer chip particles fall evenly like rain, which has a better dispersion effect on the polymer chip particles, thereby further improving the subsequent drying effect.

[0016] 3. The position of the spiral transmission rod and the overall structure of the device of the present invention are carefully set. Not only can the spiral transmission rod be used to throw polymer chip particles to improve the drying effect, but the spiral transmission rod can also be used to discharge materials to solve the problem that a large amount of granular materials easily clog the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a polymer chip drying device of the present invention;

[0018] Figure 2 This is a bottom view of a polymer chip drying device according to the present invention;

[0019] Figure 3 A cross-sectional view of a polymer chip drying device of the present invention Figure 1 ;

[0020] Figure 4 A cross-sectional view of a polymer chip drying device of the present invention Figure 2 .

[0021] In the figure: 1. Storage bin; 2. Transmission pipe; 3. Spiral transmission rod; 4. First notch; 5. Second notch; 6. Sleeve; 7. Heating wire; 8. Blower; 9. First connecting pipe; 10. Second connecting pipe; 11. Discharge port; 12. Pumping plate; 13. Cylinder; 14. Motor; 15. Feed pipe; 16. Sealing cover; 17. Filter; 18. Drying box. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4The present invention provides a technical solution: a polymer chip drying device, comprising a storage bin 1, wherein a drying mechanism for drying polymer chip particles is provided inside the storage bin 1, wherein the drying mechanism comprises a transmission pipe 2, a spiral transmission rod 3, a first notch 4, a second notch 5, a sleeve 6, a heating wire 7, a blower 8, a first connecting pipe 9, and a second connecting pipe 10. The transmission pipe 2 is fixedly provided in the middle of the inner side of the storage bin 1, and a spiral transmission rod 3 is movably provided in the middle of the inner side of the transmission pipe 2 through a bearing. The first notch 4 is provided at the lower end of the outer surface of the transmission pipe 2, and the second notch 5 is provided on the upper end surface of the transmission pipe 2. The outer side of the transmission pipe 2 is sleeved with a sleeve 6, and a plurality of heating wires 7 are embedded in the inner side wall of the sleeve 6. A blower 8 is provided on one side of the sleeve 6, and a first connecting pipe 9 is provided between the lower end of the blower 8 and the sleeve 6. A second connecting pipe 10 is provided between one side of the surface of the blower 8 and the sleeve 6.

[0024] The middle part of the lower end of the storage bin 1 is provided with a discharge port 11, and a pumping plate 12 is movably inserted inside the discharge port 11. Cylinders 13 are fixedly provided on both sides of the surface of the discharge port 11, and the movable end of the cylinder 13 is fixedly connected to the pumping plate 12. The contraction of the cylinder 13 can drive the pumping plate 12 to move. When the pumping plate 12 is opened, the polymer chip particles inside the storage bin 1 can be discharged downward. At this time, the spiral transmission rod 3 of the device can play a dual role. The spiral transmission rod 3 is driven to reverse by the motor 14. At this time, the spiral transmission rod 3 can play the role of discharging, which can accelerate the discharge of polymer chip particles through the discharge port 11. In this way, the position of the spiral transmission rod 3 of the device and the overall structure of the device are carefully arranged, not only can the spiral transmission rod 3 be used to throw the polymer chip particles to improve the drying effect, but also the spiral transmission rod 3 can be used for discharging, so as to solve the problem that a large amount of particulate materials are easily blocked by the discharge port 11;

[0025] The air inlet end of the blower 8 is communicated with the interior of the casing 6 through the second connecting pipe 10, and the air outlet end of the blower 8 is communicated with the interior of the casing 6 through the first connecting pipe 9. The blower 8 can suck the air inside the casing 6 through the second connecting pipe 10 and blow it back into the casing 6 through the first connecting pipe 9.

[0026] The upper end of the sleeve 6 is fixedly provided with a motor 14, and the power output shaft end of the motor 14 is transmission-connected to the spiral transmission tube 2, so that the spiral transmission tube 2 can be driven to rotate by the motor 14;

[0027] A feed pipe 15 is fixedly provided on one side of the upper end of the storage bin 1. A sealing cap 16 is provided on the upper end of the feed pipe 15. The polymer chips to be dried are injected into the storage bin 1 through the feed pipe 15.

[0028] A filter 17 is fixedly installed at one end of the first connecting tube 9 and the second connecting tube 10 near the sleeve 6. The filter 17 can prevent polymer chip particles from entering the first connecting tube 9 or the second connecting tube 10;

[0029] A drying box 18 is fixedly provided in the middle of the first connecting pipe 9. The drying box 18 can dry the continuously circulating hot air, thereby removing the moisture inside the entire device without wasting a lot of heat. How the drying box 18 dries the water vapor in the air is a mature existing technology, so this application document will not elaborate on it in detail.

[0030] Working principle: The drying principle of the polymer chip particles of this device is as follows: the material to be dried is stored in the storage bin 1, and then the spiral transmission rod 3 is driven to rotate by the motor 14, thereby driving the material inside the storage bin 1 to be transported upward, and finally the material is thrown out from the second notch 5, allowing the second material to fall freely. At this time, the electric heating wire 7 heats the temperature inside the sleeve 6, and the air flow is pumped by the blower 8. In this way, the hot air and the continuously falling polymer chip particles are blown against each other, and the falling height of the material is high, thereby improving the dispersion of the material, so that each material particle can have sufficient time to contact with the hot air for drying each time, thereby improving the drying effect and drying efficiency;

[0031] Compared with the conventional method of directly turning all the polymer slice particles upside down, the spiral transmission rod 3 of the present device can transmit and throw the polymer slice particles upward layer by layer, so that the polymer slice particles fall evenly like rain, which has a better dispersion effect on the polymer slice particles, thereby further improving the subsequent drying effect;

[0032] When the device completes drying and needs to discharge, the contraction of the cylinder 13 can drive the pumping plate 12 to move. When the pumping plate 12 is opened, the polymer chip particles inside the storage bin 1 can be discharged downward. At this time, the spiral transmission rod 3 of the device can play a dual role. The motor 14 drives the spiral transmission rod 3 to reverse. At this time, the spiral transmission rod 3 can play the role of discharging, which can accelerate the discharge of the polymer chip particles through the discharge port 11. In this way, the position of the spiral transmission rod 3 of the device and the overall structure of the device are carefully set. Not only can the spiral transmission rod 3 be used to throw the polymer chip particles to improve the drying effect, but the spiral transmission rod 3 can also be used for discharging to solve the problem that a large amount of particulate material easily blocks the discharge port 11.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A polymer chip drying device, comprising a storage bin (1), characterized in that: The storage bin (1) is provided with a drying mechanism for drying polymer chip particles, and the drying mechanism comprises a transmission pipe (2), a spiral transmission rod (3), a first notch (4), a second notch (5), a sleeve (6), an electric heating wire (7), a blower (8), a first connecting pipe (9), and a second connecting pipe (10). The transmission pipe (2) is fixedly provided at the middle of the inner side of the storage bin (1), and a spiral transmission rod (3) is movably provided at the middle of the inner side of the transmission pipe (2) through a bearing. The lower end of the outer surface of the transmission pipe (2) is provided with a first notch (4), and the upper end surface of the transmission pipe (2) is provided with a second notch (5). The outer side of the transmission pipe (2) is sleeved with a sleeve (6), and a plurality of electric heating wires (7) are embedded in the inner side wall of the sleeve (6). A blower (8) is provided on one side of the sleeve (6), and a first connecting pipe (9) is provided between the lower end of the blower (8) and the sleeve (6). A second connecting pipe (10) is provided between one side of the surface of the blower (8) and the sleeve (6).

2. A polymer chip drying device according to claim 1, characterized in that: A discharge port (11) is provided in the middle of the lower end of the storage bin (1), a pumping plate (12) is movably inserted into the discharge port (11), and cylinders (13) are fixedly provided on both sides of the surface of the discharge port (11), and the movable end of the cylinder (13) is fixedly connected to the pumping plate (12).

3. The polymer chip drying device according to claim 1, characterized in that: The air inlet end of the blower (8) is in communication with the interior of the sleeve (6) via the second connecting pipe (10), and the air outlet end of the blower (8) is in communication with the interior of the sleeve (6) via the first connecting pipe (9).

4. The polymer chip drying device according to claim 1, characterized in that: An electric motor (14) is fixedly provided on the upper end of the sleeve (6), and a power output shaft end of the electric motor (14) is transmission-connected to the spiral transmission tube (2).

5. The polymer chip drying device according to claim 1, characterized in that: A feed pipe (15) is fixedly provided on one side of the upper end of the storage bin (1), and a sealing cover (16) is provided on the upper end of the feed pipe (15).

6. The polymer chip drying device according to claim 1, characterized in that: A filter screen (17) is fixedly provided at one end of the first connecting tube (9) and the second connecting tube (10) close to the sleeve (6).

7. The polymer chip drying device according to claim 1, characterized in that: A drying box (18) is fixedly provided in the middle of the first connecting pipe (9).

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