Plastic particle drying machine

Abstract

The utility model discloses a plastic particle dryer which comprises a machine frame and a horizontal drying cylinder installed on the machine frame, the top and the bottom of the horizontal drying cylinder are provided with a feeding bin and a discharging bin respectively, a stirring motor is installed on the machine frame, a stirring assembly is rotationally connected into the horizontal drying cylinder, and the horizontal drying cylinder is provided with a discharging bin. The stirring assembly comprises a hollow stirring shaft in transmission connection with a stirring motor, two hollow first annular air guide pipes are symmetrically arranged on the two sides of the interior of the horizontal drying cylinder, and the first annular air guide pipes and the hollow stirring shaft are coaxially arranged; a communicating pipe is fixedly connected between the hollow stirring shaft and the first annular gas guide pipe; a plurality of drying pipes are fixedly connected between the two first annular air guide pipes, and uniform exhaust micropores are formed in the peripheral walls of the drying pipes; and an air heater for supplying hot air into the hollow stirring shaft is mounted on the rack. The overall heating and drying area of the plastic particles can be effectively increased, and then the overall drying efficiency of the plastic particles is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dryer technical field, concretely is a kind of plastic granule dryer. BACKGROUND

[0002] In the production of recycled plastic particles, a link is indispensable when washing, a large amount of liquid is often adhered to the surface of plastic particles after washing, and the damp plastic particles need to be dried before entering the next processing link, so plastic particle drying equipment is also emerging as the occasion demands.

[0003] The existing patent with the publication number CN220995082U discloses a plastic particle drying device, which can blow the plastic particles reaching the discharge bin back into the machine shell close to the feed hopper, repeatedly dry the plastic particles, greatly reduce the size of the device, and heat the plastic particles in the machine shell, and also heat the return pipe, so that the heat emitted by the heating assembly is fully utilized, saving energy consumption.

[0004] Although the above-mentioned patent can save energy consumption, the overall drying efficiency is low when drying, because the plastic particles are stacked in the machine shell, and the heating assembly cannot fully transfer heat to the plastic particles. UTILITY MODEL CONTENT

[0005] In order to solve at least one technical problem mentioned in the background art, the purpose of the utility model is to provide a plastic particle dryer, which can effectively improve the overall heating and drying area of the plastic particles and thus improve the overall drying efficiency of the plastic particles.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A plastic particle dryer, comprising a rack, a horizontal drying cylinder mounted on the rack, an inlet bin and an outlet bin respectively arranged at the top and bottom of the horizontal drying cylinder, a stirring motor mounted on the rack, a stirring assembly rotatably connected in the horizontal drying cylinder, the stirring assembly comprising a hollow stirring shaft in driving connection with the stirring motor, two hollow first annular air guide pipes symmetrically arranged on both sides of the horizontal drying cylinder, and the first annular air guide pipe is coaxially arranged with the hollow stirring shaft; a communication pipe is fixedly connected between the hollow stirring shaft and the first annular air guide pipe; a plurality of drying pipes are fixedly connected between the two first annular air guide pipes, and uniform air exhaust micropores are formed on the peripheral wall of the drying pipe; a hot air blower is mounted on the rack for supplying hot air into the hollow stirring shaft.

[0008] Preferably, the first annular air duct is provided between the hollow stirring shaft and the second annular air duct, and the second annular air duct is communicated with the hollow stirring shaft through a communication pipe; a plurality of drying pipes are fixed between the two second annular air ducts.

[0009] Preferably, stirring blades are fixed between the two first annular air ducts, and the stirring blades are in contact with the inner wall of the horizontal drying cylinder.

[0010] Preferably, a support frame is fixed on the frame, a gas rotary joint is installed on the top of the support frame, one end of the gas rotary joint is fixedly connected with the hollow stirring shaft and communicated, and the other end is communicated with the air outlet pipe of the air heater.

[0011] Preferably, the discharge bin is provided with an automatic sealing piece, the automatic sealing piece comprises a lifting motor, a screw rod, a light rod and a sealing strip, the sealing surface of the sealing strip is an arc surface, the radius of the arc surface is the same as the radius of the inner wall of the horizontal drying cylinder, the shaft end of the lifting motor is fixedly connected with the screw rod, the screw rod is threadedly connected with the sealing strip, and the sealing strip is slidingly connected with the light rod.

[0012] Preferably, the shaft end of the stirring motor and the shaft end of the hollow stirring shaft are both provided with a belt pulley, and the two belt pulleys are jointly covered with a belt.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Overall, the stirring motor drives the stirring assembly to rotate as a whole to uniformly mix the plastic particles, and the hot air is uniformly supplied to the plastic particles through the air heater, the hollow stirring shaft, the first annular air duct, the communication pipe, the drying pipe and the exhaust micro-pore, thereby effectively improving the overall drying efficiency of the plastic particles. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a first cross-sectional schematic view of the whole mechanism of the utility model;

[0017] Figure 3 It is a second cross-sectional schematic view of the whole mechanism of the utility model;

[0018] Figure 4 It is a structure schematic view of the stirring assembly of the utility model;

[0019] Figure 5 It is a structure schematic view of the automatic sealing piece of the utility model.

[0020] In the figure: 1, rack; 2, horizontal drying cylinder; 21, feeding bin; 22, discharging bin; 3, stirring motor; 4, stirring assembly; 41, hollow stirring shaft; 42, first annular air guide pipe; 43, communication pipe; 44, drying pipe; 441, exhaust micro hole; 45, second annular air guide pipe; 46, stirring blade; 5, hot air blower; 61, support frame; 62, gas rotary joint; 7, automatic blocking piece; 71, lifting motor; 72, screw rod; 73, light pole; 74, blocking strip; 741, blocking surface; 81, pulley; 82, belt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figure 1 - Figure 5 The embodiment provides a plastic particle dryer, which comprises a rack 1 and a horizontal drying cylinder 2 installed on the rack 1. The top and bottom of the horizontal drying cylinder 2 are respectively provided with a feeding bin 21 and a discharging bin 22. It should be noted that the automatic blocking piece 7 is arranged at the discharging bin 22, so that the plastic particles cannot leak from the discharging bin 22 during feeding and drying. After the drying work is completed, the automatic blocking piece 7 is opened, and the plastic particles fall from the discharging bin 22 and are collected.

[0023] A stirring motor 3 is installed on the rack 1. A stirring assembly 4 is rotatably connected in the horizontal drying cylinder 2. The stirring assembly 4 comprises a hollow stirring shaft 41 which is in transmission connection with the stirring motor 3. A pulley 81 is installed at the shaft end of the stirring motor 3 and the shaft end of the hollow stirring shaft 41. The two pulleys 81 are jointly covered with a belt 82. The transmission between the stirring motor 3 and the hollow stirring shaft 41 by the belt 82 and the pulley 81 can ensure stable transmission. Two first annular air guide pipes 42 are symmetrically arranged at the two sides inside the horizontal drying cylinder. The first annular air guide pipes 42 are coaxially arranged with the hollow stirring shaft 41. A communication pipe 43 is fixedly connected between the hollow stirring shaft 41 and the first annular air guide pipe 42. A plurality of drying pipes 44 are fixedly connected between the two first annular air guide pipes. Uniform exhaust micro holes 441 are formed in the peripheral wall of the drying pipes 44.

[0024] A hot air machine 5 is installed on the frame 1 for supplying hot air into the hollow stirring shaft 41. The hot air machine 5 blows hot air into the hollow stirring shaft 41 and supplies the hot air into the drying pipe 44 through the communicating pipe 43 and the first annular air guide pipe 42, and finally the heat is uniformly transferred to the plastic particles through the exhaust micro-holes 441. Further, a support frame 61 is fixed on the frame 1, and a gas rotary joint 62 is installed on the top of the support frame 61. One end of the gas rotary joint 62 is fixedly connected with the hollow stirring shaft 41 and in communication, and the other end is in communication with the outlet pipe of the hot air machine 5. The gas rotary joint 62 is installed because the hollow stirring shaft 41 is rotating, while the hot air machine 5 is fixedly installed on the frame 1. The gas rotary joint 62 ensures that the hot air machine 5 can still supply hot air to the hollow stirring shaft 41 in a sealed manner when the hollow stirring shaft 41 is rotating.

[0025] The specific use scenarios are further introduced below. When feeding, the discharge bin 22 is closed first, then the plastic particles to be dried are fed into the horizontal drying cylinder 2 from the feeding bin 21, and then the stirring motor 3 and the hot air machine 5 are started. The stirring motor 3 drives the stirring assembly 4 to rotate as a whole, and then the plastic particles are stirred by the drying pipe 44 to make the plastic particles mix fully. At the same time, the hot air machine 5 supplies hot air into the hollow stirring shaft 41 and then into the drying pipe 44 through the communicating pipe 43 and the first annular air guide pipe 42, and the heat is discharged through the exhaust micro-holes 441 of the drying pipe 44. Since there are multiple drying pipes 44, and the exhaust micro-holes 441 on the drying pipe 44 are densely and uniformly distributed, the plastic particles can be uniformly heated, and the uniformity of the heating of the plastic particles is improved. Since the supply of hot air to the plastic particles is more uniform, and the plastic particles are stirred by the drying pipe 44 at all times, the drying efficiency of the plastic particles can be effectively improved. After drying, the discharge bin 22 is opened to collect the dried plastic particles.

[0026] Overall, the stirring motor 3 drives the stirring assembly 4 to rotate as a whole to mix the plastic particles, and at the same time, the hot air machine 5, the hollow stirring shaft 41, the first annular air guide pipe 42, the communicating pipe 43, the drying pipe 44, and the exhaust micro-holes 441 supply hot air uniformly to the plastic particles, thereby effectively improving the overall drying efficiency of the plastic particles.

[0027] Referring to Figure 2 - Figure 4 As a specific embodiment of the present application, a second annular air guide pipe 45 is arranged between the first annular air guide pipe 42 and the hollow stirring shaft 41, and the second annular air guide pipe 45 is in communication with the hollow stirring shaft 41 through the communicating pipe 43. A plurality of drying pipes 44 are also fixedly connected between the two second annular air guide pipes 45.

[0028] In combination with the specific use scene, the second annular air guide pipe 45 and the drying pipe 44 between the two second annular air guide pipes 45 can further increase the uniformity of the distribution of the hot air in the horizontal drying cylinder 2, further increase the uniformity of the heating of the plastic particles in the horizontal drying cylinder 2, increase the heating area of a single plastic particle, and further improve the drying efficiency of the plastic particles.

[0029] Referring to Figure 2 , Figure 4 As a specific embodiment of the present application, stirring blades 46 are fixed between the two first annular air guide pipes 42 and are in contact with the inner wall of the horizontal drying cylinder 2.

[0030] In combination with the specific use scene, when the stirring assembly 4 as a whole rotates, the stirring blades 46 can increase the stirring effect on the plastic particles, so that the dispersion degree of the plastic particles is improved, and the overall drying efficiency of the plastic particles is further improved.

[0031] Referring to Figure 2 , Figure 3 , Figure 5 As a specific embodiment of the present application, an automatic blocking piece 7 is installed at the discharge bin 22, the automatic blocking piece 7 includes a lifting motor 71, a lead screw 72, a light rod 73, and a blocking strip 74, the blocking surface 741 of the blocking strip 74 is a curved surface, the radius of the curved surface is the same as the radius of the inner wall of the horizontal drying cylinder 2, the shaft end of the lifting motor 71 is fixedly connected with the lead screw 72, the lead screw 72 is threadedly connected with the blocking strip 74, and the blocking strip 74 is slidingly connected with the light rod 73.

[0032] In combination with the specific use scene, before feeding from the feeding bin 21, the lifting motor 71 is controlled to rotate, the lifting motor 71, the lead screw 72, the light rod 73, and the blocking strip 74 are cooperated to drive the blocking strip 74 to rise, and then the blocking strip 74 is used to block the discharge port at the bottom of the horizontal drying cylinder 2 at the discharge bin 22, so that the plastic particles cannot fall from the discharge bin 22; after the drying work of the plastic particles is completed, the lifting motor 71 is controlled to reverse, the blocking strip 74 is driven to descend, the discharge port is exposed, and then the dried plastic particles fall from the discharge port, and the staff can collect the dried plastic particles at the discharge bin 22.

[0033] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application.

Claims

1. A plastic particle dryer, comprising a rack (1), a horizontal drying cylinder (2) mounted on the rack (1), and a feeding bin (21) and a discharging bin (22) arranged at the top and bottom of the horizontal drying cylinder (2) respectively, characterized in that, a stirring motor (3) is mounted on the rack (1), a stirring assembly (4) is rotatably connected in the horizontal drying cylinder (2), the stirring assembly (4) comprises a hollow stirring shaft (41) in transmission connection with the stirring motor (3), two first annular air ducts (42) are symmetrically arranged at both sides of the inside of the horizontal drying cylinder (2), and the first annular air ducts (42) are coaxially arranged with the hollow stirring shaft (41); a communication pipe (43) is fixedly connected between the hollow stirring shaft (41) and the first annular air ducts (42); a plurality of drying pipes (44) are fixedly connected between the two first annular air ducts (42), and uniform air exhaust micro-holes (441) are formed in the peripheral wall of the drying pipes (44); and a hot air blower (5) for supplying hot air into the hollow stirring shaft (41) is mounted on the rack (1).

2. A plastic pellet dryer according to claim 1, wherein A second annular air duct (45) is arranged between the first annular air ducts (42) and the hollow stirring shaft (41), and the second annular air duct (45) is in communication with the hollow stirring shaft (41) through the communication pipe (43); a plurality of the drying pipes (44) are also fixedly connected between the two second annular air ducts (45).

3. A plastic pellet dryer according to claim 1, wherein A stirring blade (46) is fixedly connected between the two first annular air ducts (42), and the stirring blade (46) is in contact with the inner wall of the horizontal drying cylinder (2).

4. A plastic pellet dryer according to claim 1, wherein A support frame (61) is fixedly connected to the rack (1), a gas rotary joint (62) is mounted at the top of the support frame (61), one end of the gas rotary joint (62) is fixedly connected with and in communication with the hollow stirring shaft (41), and the other end is in communication with the air outlet pipe of the hot air blower (5).

5. A plastic pellet dryer according to claim 1, wherein An automatic blocking piece (7) is mounted on the discharging bin (22), the automatic blocking piece (7) comprises a lifting motor (71), a lead screw (72), a light rod (73), and a blocking strip (74), the blocking surface (741) of the blocking strip (74) is a curved surface, and the radius of the curved surface is the same as the radius of the inner wall of the horizontal drying cylinder, the shaft end of the lifting motor (71) is fixedly connected with the lead screw (72), the lead screw (72) is in threaded connection with the blocking strip (74), and the blocking strip (74) is in sliding connection with the light rod (73).

6. A plastic pellet dryer according to claim 1, wherein Belt pulleys (81) are mounted at the shaft ends of the stirring motor (3) and the hollow stirring shaft (41), and a belt (82) is wound around the two belt pulleys (81).

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