Plastic particle drying device for plastic bottle production

Abstract

The utility model belongs to the technical field of plastic bottle production raw material pretreatment, and particularly relates to a plastic particle drying device for plastic bottle production, which comprises a screw conveyer, the screw conveyer comprises a casing, a driving mechanism is arranged at one end of the casing, a screw shaft is rotatably arranged in the casing, and the top surface of the casing is opened. The top face of the end, close to the driving mechanism, of the machine shell is provided with a feeding port, the end, away from the driving mechanism, of the machine shell is provided with a discharging port, the machine shell is sleeved with a heating jacket, the top face of the machine shell is provided with a cover plate, the top of the cover plate is provided with a hot air channel, one end of the hot air channel communicates with the feeding port, and a filtering plate is arranged between the hot air channel and the machine shell. An auxiliary material adding box is arranged above the end, close to the feeding port, of the hot air channel. The plastic particle drying device solves the problem that plastic particles fall between the conveying belt and the inner wall of the drying cylinder in the conveying process to cause material leakage, the plastic particle drying efficiency is improved, and follow-up production is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of raw material pretreatment for plastic bottle production, and in particular relates to a plastic particle drying device for plastic bottle production. Background Art

[0002] Plastics are composed of synthetic resins, fillers, plasticizers, stabilizers, lubricants, colorants and other additives. In the process of plastic bottle production, it is necessary to dry the plastic particles used in the production of plastic bottles to reduce the water content of the plastic particles and meet the requirements of subsequent production and processing. The commonly used plastic particle raw materials in the production of plastic bottles are polypropylene PP and high-density polyethylene HDPE. When producing plastic bottles, it is also necessary to add fillers such as talcum powder and calcium carbonate to the plastic particle raw materials to increase the hardness and stability of the plastic bottles and reduce costs.

[0003] Chinese patent CN221717506U discloses a high-efficiency dryer for plastic particles, including a drying cylinder, a feed pipe is provided on the upper side of the drying cylinder, an opening is provided on the other side of the drying cylinder, a ventilation mechanism is provided between the drying cylinder and the feed pipe, a transmission device is provided inside the drying cylinder, and a drying assembly is provided corresponding to the transmission device of the drying cylinder. The above patent uses a conveyor belt to convey plastic particles. During the conveying process, the plastic particles are easy to fall between the conveyor belt and the inner wall of the drying cylinder, resulting in leakage and affecting the drying efficiency. At the same time, the patent can only heat above the plastic particles during the drying process, resulting in insufficient drying of the plastic particles, and fillers cannot be added during drying, affecting the hardness and stability of the plastic bottle. Utility Model Content

[0004] The utility model aims to provide a plastic granule drying device for plastic bottle production, so as to solve the problem of plastic granules falling into between a conveyor belt and the inner wall of a drying cylinder during the conveying process, causing leakage of the granules, and at the same time avoid the problem that the plastic granules can only be heated above the plastic granules during the drying process and fillers cannot be added during drying, thereby improving the drying efficiency of the plastic granules and facilitating subsequent production.

[0005] To achieve the above purpose, the technical solution of the utility model is:

[0006] The plastic particle drying device for plastic bottle production described in the utility model comprises a screw conveyor, which comprises a casing, a driving mechanism is arranged at one end of the casing, a screw shaft is rotatably arranged inside the casing, an opening is arranged on the top surface of the casing, a feed port is arranged on the top surface of the end of the casing close to the driving mechanism, a discharge port is arranged on the end of the casing away from the driving mechanism, a heating jacket is arranged on the outer shell of the casing, a cover plate is arranged on the top surface of the casing, a hot air channel is arranged on the top of the cover plate, one end of the hot air channel is connected to the feed port, a filter plate is arranged between the hot air channel and the casing, and an auxiliary material adding box is arranged above one end of the hot air channel close to the feed port.

[0007] in:

[0008] The height of the hot air channel at one end close to the discharge port is higher than the height of the hot air channel at one end close to the feed port.

[0009] An air inlet pipe is arranged at one end of the hot air channel away from the feed inlet.

[0010] Two groups of slide grooves are symmetrically arranged at the bottom of the inner wall of the hot air channel, and the filter plates are slidably arranged in the two groups of slide grooves.

[0011] The inner wall of the auxiliary material adding box is provided with an electric heating tube, and the bottom of the auxiliary material adding box is provided with two round tubes, which are respectively arranged on both sides of the hot air channel.

[0012] The tops of the two round tubes are respectively communicated with the interior of the auxiliary material adding box, and the bottoms of the two round tubes are respectively communicated with the interior of the casing.

[0013] A material tapper is arranged in the feed port, the material tapper is connected to a motor, and the motor is fixedly arranged on the side wall of the feed port.

[0014] The material tapping device comprises a material tapping shaft, which is connected to the output end of the motor, and is provided with a plurality of material tapping rods along the radial direction, and the material tapping shaft is arranged parallel to the spiral shaft.

[0015] The heating jacket is arranged between the feed port and the discharge port.

[0016] The heating jacket is provided with a liquid inlet and a liquid outlet.

[0017] The beneficial effects of the utility model are:

[0018] By setting up a screw conveyor, the screw shaft can be used to spirally convey plastic particles, thereby avoiding leakage of plastic particles during the conveying process; by setting up a heating jacket and a hot air channel, the plastic particles can be heated and dried, so that the plastic particles are heated evenly as a whole, the drying area is large, the drying is more complete, and the drying efficiency of the plastic particles is improved; by setting up an auxiliary material adding box, fillers can be added to the screw conveyor and mixed with the drying plastic particles, which is convenient for subsequent production and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4This is a schematic diagram of the structure of the cover plate, hot air channel, chute, auxiliary material adding box, electric heating tube and round tube in the utility model;

[0023] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0024] In the figure:

[0025] 1. Screw conveyor; 101. Casing; 102. Screw shaft; 2. Heating jacket; 3. Cover plate; 4. Filter plate; 5. Feeder; 501. Feeder rod; 502. Feeder shaft; 6. Motor; 7. Auxiliary material adding box; 8. Hot air channel; 9. Air inlet pipe; 10. Chute; 11. Electric heating tube; 12. Round tube; 13. Liquid inlet; 14. Liquid outlet; 15. Feed inlet; 16. Discharge outlet. DETAILED DESCRIPTION

[0026] The present invention will be specifically described and illustrated below in conjunction with the embodiments.

[0027] Example 1

[0028] like Figure 1-5 As shown, the plastic granule drying device for plastic bottle production described in the utility model comprises a screw conveyor 1, which comprises a casing 101, a driving mechanism is arranged at one end of the casing 101, a screw shaft 102 is rotatably arranged inside the casing 101, the top surface of the casing 101 is arranged with an opening, a feed port 15 is arranged at the top surface of the end of the casing 101 close to the driving mechanism, a discharge port 16 is arranged at the end of the casing 101 away from the driving mechanism, a heating jacket 2 is arranged on the outer cover of the casing 101, a cover plate 3 is arranged on the top of the casing 101, a hot air channel 8 is arranged on the top of the cover plate 3, one end of the hot air channel 8 is connected to the feed port 15, a filter plate 4 is arranged between the hot air channel 8 and the casing 101, and an auxiliary material adding box 7 is arranged above the end of the hot air channel 8 close to the feed port 15.

[0029] By providing a screw conveyor 1, the screw shaft 102 can be used to spirally convey plastic particles, thereby preventing leakage of plastic particles during the conveying process; by providing a heating jacket 2 and a hot air channel 8, the plastic particles can be heated and dried, so that the plastic particles are heated evenly as a whole, the drying area is large, the drying is more complete, and the drying efficiency of the plastic particles is improved; by providing an auxiliary material adding box 7, fillers can be added to the screw conveyor 1 and mixed with the plastic particles being dried, which is convenient for subsequent production and improves production efficiency.

[0030] The height of the hot gas channel 8 at one end close to the discharge port 16 is higher than the height of the hot gas channel 8 at one end close to the feed port 15 .

[0031] An air inlet pipe 9 is provided at one end of the hot air channel 8 away from the feed port 15 .

[0032] The air inlet pipe 9 is connected to an external air source, and hot air is blown into the hot air channel 8 through the air inlet pipe 9. The hot air moves toward the feed port 15 in the hot air channel 8, and the plastic particles are heated and dried at the same time. The uncondensed hot air is discharged from the feed port 15, and the moisture condensed on the top surface of the hot air channel 8 flows back to the feed port 15, enters the screw conveyor 1 again, and is heated and evaporated by the heating jacket 2.

[0033] Two groups of chutes 10 are symmetrically arranged at the bottom of the inner wall of the hot air channel 8, and the filter plate 4 is slidably arranged in the two groups of chutes 10. The filter plate 4 can prevent plastic particles from entering the hot air channel 8 with the evaporated hot air, and the chutes 10 facilitate the disassembly and assembly of the filter plate 4.

[0034] An electric heating tube 11 is arranged on the inner wall of the auxiliary material adding box 7 , and two round tubes 12 are arranged on the bottom of the auxiliary material adding box 7 . The two round tubes 12 are arranged on both sides of the hot air channel 8 , respectively.

[0035] The tops of the two round tubes 12 are respectively connected to the inside of the auxiliary material adding box 7, and the bottoms of the two round tubes 12 are respectively connected to the inside of the casing 101. After being heated in the auxiliary material adding box 7, the filler enters the screw conveyor 1 through the round tubes 12 and mixes with the drying plastic particles, which facilitates subsequent production and improves production efficiency.

[0036] A material tapper 5 is arranged in the feed port 15 , and the material tapper 5 is connected to a motor 6 , which is fixedly arranged on the side wall of the feed port 15 .

[0037] The material tapping device 5 comprises a material tapping shaft 502, which is connected to the output end of the motor 6, and is provided with a plurality of material tapping rods 501 along the radial direction, and the material tapping shaft 502 is arranged parallel to the screw shaft 102. The material tapping device 5 can break up the agglomerated plastic particles.

[0038] The heating jacket 2 is disposed between the feed port 15 and the discharge port 16 .

[0039] The heating jacket 2 is provided with a liquid inlet 13 and a liquid outlet 14 .

Claims

1. A plastic granule drying device for plastic bottle production, comprising a screw conveyor (1), the screw conveyor (1) comprising a housing (101), a driving mechanism being arranged at one end of the housing (101), a screw shaft (102) being rotatably arranged inside the housing (101), characterized in that: The top surface of the casing (101) is provided with an opening, a feed port (15) is provided on the top surface of one end of the casing (101) close to the driving mechanism, a discharge port (16) is provided on the end of the casing (101) away from the driving mechanism, a heating jacket (2) is provided on the outer cover of the casing (101), a cover plate (3) is provided on the top surface of the casing (101), a hot air channel (8) is provided on the top of the cover plate (3), one end of the hot air channel (8) is connected to the feed port (15), a filter plate (4) is provided between the hot air channel (8) and the casing (101), and an auxiliary material adding box (7) is provided above one end of the hot air channel (8) close to the feed port (15).

2. The plastic granule drying device for plastic bottle production according to claim 1, characterized in that: The height of the hot air channel (8) at one end close to the discharge port (16) is higher than the height of the hot air channel (8) at one end close to the feed port (15).

3. The plastic granule drying device for plastic bottle production according to claim 1, characterized in that: An air inlet pipe (9) is provided at one end of the hot air channel (8) away from the feed inlet (15).

4. The plastic granule drying device for plastic bottle production according to claim 1, characterized in that: Two groups of slide grooves (10) are symmetrically arranged at the bottom of the inner wall of the hot gas channel (8), and the filter plate (4) is slidably arranged in the two groups of slide grooves (10).

5. The plastic granule drying device for plastic bottle production according to claim 1, characterized in that: An electric heating tube (11) is arranged on the inner wall of the auxiliary material adding box (7), and two round tubes (12) are arranged at the bottom of the auxiliary material adding box (7), and the two round tubes (12) are respectively arranged on both sides of the hot air channel (8).

6. The plastic granule drying device for plastic bottle production according to claim 5, characterized in that: The tops of the two circular tubes (12) are respectively connected to the interior of the auxiliary material adding box (7), and the bottoms of the two circular tubes (12) are respectively connected to the interior of the casing (101).

7. The plastic granule drying device for plastic bottle production according to claim 1, characterized in that: A material tapper (5) is arranged in the feed opening (15), and the material tapper (5) is connected to a motor (6), and the motor (6) is fixedly arranged on the side wall of the feed opening (15).

8. The plastic granule drying device for plastic bottle production according to claim 7, characterized in that: The material tapping device (5) comprises a material tapping shaft (502), the material tapping shaft (502) is connected to the output end of the motor (6), a plurality of material tapping rods (501) are arranged along the radial direction of the material tapping shaft (502), and the material tapping shaft (502) is arranged parallel to the screw shaft (102).

9. The plastic granule drying device for plastic bottle production according to claim 1, characterized in that: The heating jacket (2) is arranged between the feed port (15) and the discharge port (16).

10. The plastic granule drying device for plastic bottle production according to claim 1, characterized in that: The heating jacket (2) is provided with a liquid inlet (13) and a liquid outlet (14).

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