A drying hopper

Abstract

The present invention discloses a drying barrel, which relates to the technical field of plastic particle drying. The key points of its technical solution are as follows: It includes a barrel body provided with a feeding part and a discharging part from top to bottom. A guiding column is arranged between the feeding part and the discharging part inside the barrel body. The guiding column is fixedly connected to the barrel body through a connecting piece. One end of the guiding column is fixedly connected with a first conical cap for diverting and guiding materials. The other end of the guiding column is embedded with a second conical cap. A third conical cap communicated with its interior is arranged on the guiding column outside the second conical cap. An air inlet pipe for blowing air into the second conical cap is communicated with the third conical cap. A plurality of air outlets for leading out the reflected air in the second conical cap are arranged along the circumferential direction on the side wall of the third conical cap. In the present invention, there is no dead angle of blowing between the hot air and the guiding column, effectively improving the drying effect of plastic particles.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic pellet drying, and more specifically, it relates to a drying cylinder. Background Art

[0002] A drying cylinder is a device used to dry plastics during the plastic production process.

[0003] The existing drying cylinder is as Figure 4 shown. It mainly includes an outer cylinder 8. An air guiding pipe 9 is arranged inside the outer cylinder 8. An air inlet 10 for introducing hot air is arranged on the side wall of the outer cylinder 8 and is communicated with the air guiding pipe 9. A lantern-shaped air equalizing pipe 11 is arranged at the bottom end of the air guiding pipe 9. Air equalizing openings for blowing hot air to plastic pellets 12 are arranged on the air equalizing pipe 11. During operation, the plastic pellets 12 fall from top to bottom inside the outer cylinder 8, and the hot air blown out from the air equalizing openings heats and dries them.

[0004] However, in the above technical solution, since the air equalizing pipe 11 is arranged in a lantern shape, a blowing dead angle will be formed at the place close to the outer side wall of the air guiding pipe 9, resulting in that the plastic pellets 12 falling close to the outer side wall of the air guiding pipe 9 cannot contact the hot air, and the drying effect is poor.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a drying cylinder in which there is no blowing dead angle between the hot air and the material guiding column, effectively improving the drying effect of plastic pellets.

[0007] The above technical purpose of the present invention is achieved through the following technical solutions: A drying cylinder includes a cylinder body provided with a feeding part and a discharging part from top to bottom. Supporting feet are arranged on the outer peripheral wall at the bottom of the cylinder body. A material guiding column is arranged inside the cylinder body between the feeding part and the discharging part. The material guiding column is fixedly connected to the cylinder body through a connecting piece. One end of the material guiding column is fixedly connected with a first conical cap for diverting and guiding materials. The other end of the material guiding column is embedded with a second conical cap. The cone top of the first conical cap faces the feeding part. The cone top of the second conical cap is arranged in the same direction as the cone top of the first conical cap. A third conical cap communicated with its interior is arranged on the outer side of the second conical cap on the material guiding column. The cone top of the third conical cap is opposite to the cone top of the second conical cap. An air inlet pipe for blowing air into the second conical cap is arranged at the cone top of the third conical cap. A plurality of air outlet openings for leading out the reflected air in the second conical cap are arranged along the circumferential direction on the side wall of the third conical cap.

[0008] In one embodiment, the material guiding column and the cylinder body are on the same central axis.

[0009] In one embodiment, the feeding part includes a cover plate covering the cylinder body, and a feeding port is formed in the cover plate.

[0010] In one embodiment, the connecting piece includes a plurality of connecting pieces fixedly connected to the cover plate. The plurality of connecting pieces are arranged in a circumferential annular array along the circumference of the feeding port, and one end of the connecting piece away from the cover plate is fixedly connected to the material guiding column.

[0011] In one embodiment, the discharging part includes a conical funnel fixedly connected to the cylinder body and a discharging pipe fixedly connected to the conical funnel. A discharging port is arranged where the discharging pipe communicates with the conical funnel and the cylinder body.

[0012] In one embodiment, a hole groove for the air inlet pipe to extend out is arranged on the side wall of the discharging pipe. One end of the air inlet pipe away from the third conical cap extends out to the outside of the discharging pipe along the hole groove, and the outer diameter of the air inlet pipe is smaller than the diameter of the discharging port.

[0013] In summary, the present invention has the following beneficial effects: During the working process, plastic particles enter through the feeding part. After being shunted and guided by the first conical cap, the plastic particles uniformly fall along the outer peripheral wall of the material guiding column. At the same time, hot air is introduced into the air inlet pipe, and the hot air blows on the inner side wall of the second conical cap along the air inlet pipe. Blocked by the second conical cap, the hot air is reflected and redirected like light and blows on the inner side wall of the third conical cap. Finally, the hot air blows out along the air outlet on the third conical cap. And due to the physical property of hot air rising, the hot air rises towards the feeding part and comes into full contact with the plastic particles. Compared with the prior art, during the rising process of the hot air, there is no blocking protrusion between the third conical cap and the material guiding column, and the hot air can rise closely along the outer side wall of the material guiding column. Therefore, there is no dead angle for blowing between the hot air and the material guiding column, which can effectively increase the contact surface between the plastic particles and the hot air and has a good drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of a drying cylinder according to an embodiment of the present application;

[0015] Figure 2 is a cross-sectional view of a drying cylinder according to an embodiment of the present application;

[0016] Figure 3 is a schematic structural diagram of a connecting piece in a drying cylinder according to an embodiment of the present application;

[0017] Figure 4 is a schematic structural diagram of a drying cylinder in the prior art.

[0018] In the figure: 1, cylinder body; 2, cover plate; 21, feed inlet; 3, discharge part; 31, conical funnel; 32, discharge pipe; 321, discharge outlet; 4, support feet; 5, air inlet pipe; 6, material guiding column; 61, first conical cap; 62, second conical cap; 63, third conical cap; 631, air outlet; 7, connecting piece; 8, outer cylinder; 9, air guiding pipe; 10, air inlet; 11, air equalizing pipe; 12, plastic particles. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figure 1 and Figure 2 shown, the embodiment of the present application provides a drying barrel, which includes a cylinder body 1 provided with a feed part and a discharge part 3 from top to bottom. Support feet 4 are arranged on the outer peripheral wall of the bottom of the cylinder body 1. A material guiding column 6 is arranged between the feed part and the discharge part 3 in the cylinder body 1, and the material guiding column 6 is fixedly connected to the cylinder body 1 through a connecting piece. One end of the material guiding column 6 is fixedly connected with a first conical cap 61 for diverting and guiding materials, and the other end of the material guiding column 6 is embedded with a second conical cap 62. The apex of the first conical cap 61 faces the feed part, and the apex of the second conical cap 62 is arranged in the same direction as the apex of the first conical cap 61. A third conical cap 63 communicating with its interior is arranged on the outer side of the second conical cap 62 on the material guiding column 6, and the apex of the third conical cap 63 is opposite to the apex of the second conical cap 62. An air inlet pipe 5 for blowing air into the second conical cap 62 is communicated at the apex of the third conical cap 63, and a plurality of air outlets 631 for leading out the reflected air in the second conical cap 62 are arranged along the circumferential direction on the side wall of the third conical cap 63.

[0021] It should be noted that the "reflected air" is a self-defined term, which mainly means that when hot air flows into the second conical cap 62, under the blockage of the inner side wall of the second conical cap 62, the hot air will be reflected and turned like light and flow towards the inner side wall of the third conical cap 63.

[0022] During the working process, plastic particles enter from the feeding part. After being shunted and guided by the first conical cap 61, the plastic particles uniformly fall along the outer peripheral wall of the material guiding column 6. At the same time, hot air is introduced into the air inlet pipe 5, and the hot air blows on the inner side wall of the second conical cap 62 along the air inlet pipe 5. Blocked by the second conical cap 62, the hot air is reflected and redirected like light and blows on the inner side wall of the third conical cap 63. Finally, the hot air blows out from the air outlet 631 on the third conical cap 63. And due to the physical property of hot air rising, the hot air rises towards the feeding part and makes full contact with the plastic particles. The plastic particles dried by the hot air flow out from the discharging part 3.

[0023] Compared with the prior art, through the setting of the first conical cap 61, during the falling process of the plastic particles, it is not easy to stack, and they can uniformly disperse and fall from the outer side wall of the material guiding column 6, which can increase their contact area with the hot air and accelerate the drying of the plastic particles. At the same time, during the rising process of the hot air, there is no blocking protrusion between the third conical cap 63 and the material guiding column 6, and the hot air can rise closely along the outer side wall of the material guiding column 6. Therefore, there is no dead angle of blowing between the hot air and the material guiding column 6, which can further increase the contact surface between the plastic particles and the hot air and has a better drying effect.

[0024] On the above basis, as Figure 2 shown, the material guiding column 6 and the cylinder body 1 are on the same central axis.

[0025] The material guiding column 6 is arranged on the central axis of the cylinder body 1, so that the radial distance from the material guiding column 6 to the inner side wall of the cylinder body 1 is equal everywhere, and the hot air can uniformly flow upward along the outer peripheral side wall of the material guiding column 6 in the cylinder body 1.

[0026] The above technical solution enables the plastic particles to uniformly contact the hot air when falling, so that the drying of the plastic particles is more uniform and sufficient.

[0027] On the above basis, as Figure 1 and Figure 3 shown, the feeding part includes a cover plate 2 covering the cylinder body 1, and a feeding port 21 is opened on the cover plate 2.

[0028] Since the cover plate 2 covers the cylinder body 1, when the hot air rises to the cover plate 2, blocked by the cover plate 2, the hot air is redirected and converges to fill the chamber between the cylinder body 1 and the material guiding column 6.

[0029] Through the setting of the cover plate 2, the number of plastic particles dried per unit time is increased, and the working efficiency of drying the plastic particles is effectively improved.

[0030] On the above basis, as Figure 3As shown, the connecting piece includes several connecting tabs 7 fixedly connected to the cover plate 2. The several connecting tabs 7 are arranged in a circumferential annular array along the circumference of the feeding port 21. One end of the connecting tab 7 away from the cover plate 2 is fixedly connected to the guiding column 6.

[0031] It should be noted that the connecting tab 7 can be connected to the guiding column 6 by welding or riveting.

[0032] The several connecting tabs 7 connect the guiding column 6 to the cylinder body 1. Plastic particles can slide down along between every two connecting tabs 7 on the first conical cap 61.

[0033] Through the arrangement of the several connecting tabs 7, the stability of the connection between the guiding column 6 and the cylinder body 1 is improved, and at the same time, the connecting tabs 7 are not likely to interfere with the falling of plastic particles.

[0034] On the above basis, as Figure 1 and Figure 2 shown, the discharging part 3 includes a conical funnel 31 fixedly connected to the cylinder body 1 and a discharging pipe 32 fixedly connected to the conical funnel 31. The discharging pipe 32 is provided with a discharging port 321 in communication with the conical funnel 31 and the cylinder body 1. A hole slot for the air inlet pipe 5 to extend out is provided on the side wall of the discharging pipe 32. One end of the air inlet pipe 5 away from the third conical cap 63 extends out to the outside of the discharging pipe 32 along the hole slot. The outer diameter of the air inlet pipe 5 is smaller than the diameter of the discharging port 321.

[0035] When receiving materials, plastic particles will converge in the conical funnel 31 and finally flow out from the discharging port 321 and be collected by the next process. Setting the outer diameter of the air inlet pipe 5 to be smaller than the diameter of the discharging port 321 can reduce the interference of the air inlet pipe 5 on the falling of plastic particles.

[0036] Through the arrangement of the conical funnel 31, the standardization of plastic particle material receiving is improved, and it is not likely to splash.

[0037] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A drying barrel, comprising a barrel body (1) provided with a feeding part and a discharging part (3) from top to bottom, characterized in that: On the outer peripheral wall of the bottom of the cylinder body (1), there are support feet (4) provided. Inside the cylinder body (1), between the feeding part and the discharging part (3), there is a material guiding column (6) arranged. The material guiding column (6) is fixedly connected to the cylinder body (1) through a connecting piece. One end of the material guiding column (6) is fixedly connected with a first conical cap (61) for diverting and guiding the material. The other end of the material guiding column (6) is embedded with a second conical cap (62). The apex of the first conical cap (61) faces the feeding part. The apex of the second conical cap (62) is arranged in the same direction as the apex of the first conical cap (61). On the material guiding column (6), outside the second conical cap (62), there is a third conical cap (63) communicated with its inside. The apex of the third conical cap (63) is opposite to the apex of the second conical cap (62). At the apex of the third conical cap (63), there is an air inlet pipe (5) communicated for blowing air into the second conical cap (62). Along the circumferential direction of the side wall of the third conical cap (63), there are several air outlet openings (631) for leading out the reflected air in the second conical cap (62). Plastic particles enter from the feeding part. After being diverted and guided by the first conical cap (61), the plastic particles uniformly fall along the outer peripheral wall of the material guiding column (6). At the same time, hot air is introduced into the air inlet pipe (5). The hot air blows on the inner side wall of the second conical cap (62) along the air inlet pipe (5). Blocked by the second conical cap (62), the hot air is reflected and redirected to blow on the inner side wall of the third conical cap (63). Finally, the hot air blows out along the air outlet openings (631) on the third conical cap (63). And due to the physical property that hot air rises, the hot air rises towards the feeding part and makes full contact with the plastic particles. The plastic particles dried by the hot air flow out from the discharging part (3).

2. The drying barrel according to claim 1, characterized in that: The material guiding column (6) and the cylinder body (1) are on the same central axis.

3. The drying barrel according to claim 1, characterized in that: The feeding part includes a cover plate (2) covering the cylinder body (1). On the cover plate (2), there is a feeding opening (21) provided.

4. The drying barrel according to claim 3, characterized in that: The connecting piece includes several connecting pieces (7) fixedly connected to the cover plate (2). The several connecting pieces (7) are arranged in a circumferential annular array along the circumference of the feeding opening (21). The end of the connecting piece (7) away from the cover plate (2) is fixedly connected to the material guiding column (6).

5. The drying barrel according to claim 1, characterized in that: The discharging part (3) includes a conical funnel (31) fixedly connected to the cylinder body (1) and a discharging pipe (32) fixedly connected to the conical funnel (31). The discharging pipe (32) is communicated with the conical funnel (31) and the cylinder body (1) with a discharging opening (321).

6. The drying barrel according to claim 5, characterized in that: On the side wall of the discharging pipe (32), there is a hole groove for the air inlet pipe (5) to extend out. The end of the air inlet pipe (5) away from the third conical cap (63) extends out to the outside of the discharging pipe (32) along the hole groove. The outer diameter of the air inlet pipe (5) is smaller than the diameter of the discharging opening (321).

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