Polypropylene drying device

Abstract

The utility model relates to the technical field of polypropylene production, in particular to a polypropylene drying device. Comprising a shell, a feeding pipe is arranged at the top of the shell, a ventilation opening is further formed in the top of the shell, a dispersing cone is further arranged in the shell and located under the feeding pipe, a gap is formed between the dispersing cone and the inner wall of the shell, a collecting hopper is arranged below the dispersing cone, and the collecting hopper is communicated with the ventilation opening. The upper edge of the collecting hopper makes contact with the inner wall of the shell, a discharging port is formed in the center of the lower portion of the collecting hopper, an air inlet pipe is arranged on the lower portion of the shell and connected to an air heater through a pipeline, and a first discharging pipe is arranged at the bottom of the shell. The polypropylene drying device is convenient to dry polypropylene.

Description

Technical Field

[0001] The utility model relates to the technical field of polypropylene production, in particular to a polypropylene drying device. Background Art

[0002] The polypropylene drying device is used to remove moisture from polypropylene pellets. Patent application number 201720125979.4 discloses a hot air dryer for polypropylene pellets, comprising a housing, a hot air blower, and a storage rack. Air inlets and exhaust ports are located on either side of the top of the housing, with a hot air inlet located in the middle of the top. The hot air inlet is connected to the hot air blower via a hot air duct, which passes through the hot air inlet and connects to a branch hot air duct via a connecting pipe. The branch hot air duct is provided with multiple evenly distributed hot air nozzles at the bottom. The inner sidewalls of the housing are respectively provided with a first slide and a second slide. Both slides have semicircular groove structures, while both ends of the storage rack have semicircular convex structures. The structure is simple and easy to use, and it can prevent damage to the polypropylene pellets caused by high temperatures. However, in use, the polypropylene pellets must first be placed on the storage rack. After drying is complete, the housing door must be opened to remove the storage rack. After removing the polypropylene pellets from the storage rack, the storage rack must be returned to its original position, which is relatively inconvenient. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a polypropylene drying device in view of the above-mentioned technical deficiencies.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a polypropylene drying device, comprising a shell, a feed pipe is provided at the top of the shell, an air vent is also provided at the top of the shell, a dispersion cone is also provided in the shell, the dispersion cone is located directly below the feed pipe, and there is a gap between the dispersion cone and the inner wall of the shell, a collecting hopper is provided below the dispersion cone, the upper edge of the collecting hopper is in contact with the inner wall of the shell, a discharge port is provided at the lower center of the collecting hopper, an air inlet pipe is provided at the lower part of the shell, the air inlet pipe is connected to the hot air blower through a pipe, and a first discharge pipe is provided at the bottom of the shell.

[0005] To further optimize this technical solution, the dispersion cone and the collecting bucket are densely covered with tiny through holes.

[0006] To further optimize the technical solution, the dispersion cone and the collecting bucket constitute a flow guide component, and a plurality of flow guide components are provided in the shell, and the plurality of flow guide components are arranged up and down.

[0007] To further optimize this technical solution, there are multiple air inlet pipes.

[0008] To further optimize the technical solution, the air inlet duct is inclined upward in the direction from the outside of the shell to the inside of the shell.

[0009] To further optimize the technical solution, the bottom of the first discharge pipe is closed and a second discharge pipe is provided on one side thereof, a spiral blade is provided in the first discharge pipe, and the spiral blade is connected to the motor transmission arranged at the bottom of the first discharge pipe.

[0010] Compared with the prior art, the present invention has the following advantages: a feed pipe is provided on the top of the shell, a dispersion cone and a collecting bucket are provided in sequence directly below the feed pipe, an air inlet pipe is provided at the lower part of the shell, and a first discharge pipe is provided at the bottom of the shell, so that the polypropylene particles added from the feed pipe will not fall directly, but fall along the dispersion cone and the collecting bucket, thereby increasing the heating distance, thereby having a relatively high drying efficiency, and the dried polypropylene particles fall from the first discharge pipe to be collected, and do not need to be taken out and put back on the shelf as in the prior art, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of a polypropylene drying device.

[0012] Figure 2 This is a structural schematic diagram of a polypropylene drying device from another direction.

[0013] In the figure: 1. Shell; 11. First discharge pipe; 12. Second discharge pipe; 13. Feed pipe; 14. Air vent; 2. Dispersion cone; 3. Collecting bucket; 31. Feeding port; 4. Air inlet pipe; 5. Spiral blade. DETAILED DESCRIPTION

[0014] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0015] Specific implementation method: Figure 1-2As shown, a polypropylene drying device includes a shell 1. In order to improve the thermal insulation effect, an insulation layer can be provided on the outside of the shell 1. A feed pipe 13 is provided on the top of the shell 1, and polypropylene particles can be added to the shell 1 through the feed pipe 13. The top of the shell 1 is also provided with an air vent 14. A dispersion cone 2 is also provided in the shell 1. The bottom diameter of the dispersion cone 2 is much larger than the diameter of the feed pipe 13. The dispersion cone 2 is located directly below the feed pipe 13. There is a gap between the dispersion cone 2 and the inner wall of the shell 1, and the polypropylene particles can fall through the gap. A collecting hopper 3 is provided below the dispersion cone 2. The upper edge of the collecting hopper 3 contacts the inner wall of the shell 1. A discharge port 31 is provided at the center of the lower part of the collecting hopper 3. The diameter of the discharge port 31 is much smaller than the bottom diameter of the dispersion cone 2. An air inlet pipe 4 is provided at the bottom of the shell 1. The air inlet pipe 4 is connected to a hot air blower (not shown in the figure) through a pipeline. The hot air blower can generate hot air. A first discharge pipe 11 is provided at the bottom of the shell 1. During use, hot air enters the shell 1 through the air inlet pipe 4 and is then discharged from the air vent 14 (a part of it is also discharged from the first discharge pipe 11). Polypropylene particles are continuously added to the shell 1 through the feed pipe 13. The polypropylene particles falling from the feed pipe 13 fall on the dispersion cone 2 and then fall along the dispersion cone 2. Then they fall into the collecting bucket 3 and then fall from the discharge port 31. During this process, the dispersion cone 2 and the collecting bucket 3 are heated by the hot air, and the polypropylene particles are heated and dried by the hot air and the hot dispersion cone 2 and the collecting bucket 3. The polypropylene particles are prone to tumbling during the falling process, and due to the action of the hot air, the moisture adhered to the polypropylene particles is more easily taken away, thereby having a relatively high drying efficiency. The dried polypropylene particles fall from the first discharge pipe 11, and a receiving bucket can be placed below the first discharge pipe 11 for collection.

[0016] The dispersion cone 2 and the collecting hopper 3 are densely covered with fine through-holes, and hot air can blow the polypropylene particles on both through the through-holes, thereby improving the drying efficiency.

[0017] The dispersion cone 2 and the collecting hopper 3 constitute a guide assembly. A guide assembly includes a dispersion cone 2 and a collecting hopper 3. Multiple guide assemblies are arranged in the shell 1. The multiple guide assemblies are arranged up and down, thereby increasing the distance for the polypropylene particles to be heated and improving the drying effect and efficiency.

[0018] There are multiple air inlet pipes 4 and they are symmetrically distributed about the axis of the shell 1, so that the distribution of hot air in the shell 1 is more uniform.

[0019] The air inlet pipe 4 is tilted upward in the direction from the outside of the shell 1 to the inside of the shell 1, so that the hot air blows obliquely upward, making it easier for the hot air to be discharged from the air vent 14 at the top of the shell 1, and the hot air discharged from the first discharge pipe 11 is reduced.

[0020] The bottom of the first discharge pipe 11 is closed, and a second discharge pipe 12 is disposed on one side thereof. The second discharge pipe 12 is preferably tilted downward. A spiral blade 5 is disposed within the first discharge pipe 11 and is in transmission connection with a motor disposed at the bottom of the first discharge pipe 11. The spiral blade 5 rotates (at a relatively slow speed) to move the polypropylene particles within the first discharge pipe 11 downward and out of the second discharge pipe 12. The presence of the spiral blade 5 makes it more difficult for the hot air to be discharged from the first discharge pipe 11, thereby increasing the proportion of hot air discharged from the vent 14 and improving the utilization rate of the hot air.

[0021] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A polypropylene drying device, comprising a housing (1), characterized in that: A feed pipe (13) is provided at the top of the shell (1), and an air vent (14) is also provided at the top of the shell (1). A dispersion cone (2) is also provided in the shell (1), and the dispersion cone (2) is located directly below the feed pipe (13). There is a gap between the dispersion cone (2) and the inner wall of the shell (1). A collecting hopper (3) is provided below the dispersion cone (2), and the upper edge of the collecting hopper (3) contacts the inner wall of the shell (1). A discharge port (31) is provided at the center of the lower part of the collecting hopper (3). An air inlet pipe (4) is provided at the lower part of the shell (1), and the air inlet pipe (4) is connected to the hot air blower through a pipeline. A first discharge pipe (11) is provided at the bottom of the shell (1).

2. A polypropylene drying device according to claim 1, characterized in that: The dispersion cone (2) and the collecting hopper (3) are densely covered with tiny through holes.

3. A polypropylene drying device according to claim 1, characterized in that: The dispersion cone (2) and the collecting bucket (3) form a flow guide assembly. A plurality of flow guide assemblies are arranged in the housing (1), and the plurality of flow guide assemblies are arranged in an upper and lower manner.

4. A polypropylene drying device according to claim 1, characterized in that: There are multiple air inlet pipes (4).

5. A polypropylene drying device according to claim 1, characterized in that: The air inlet pipe (4) is inclined upward in a direction from the outside of the shell (1) to the inside of the shell (1).

6. A polypropylene drying device according to any one of claims 1 to 5, characterized in that: The bottom of the first discharge pipe (11) is closed and a second discharge pipe (12) is provided on one side thereof. A spiral blade (5) is provided in the first discharge pipe (11), and the spiral blade (5) is transmission-connected to a motor provided at the bottom of the first discharge pipe (11).

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