Rotor-free cyclone dewatering and drying equipment

Abstract

The rotor-free cyclone dewatering and drying equipment comprises a dewatering and air-drying module and a centrifugal fan, the dewatering and air-drying module comprises a dewatering outer pipe, a central air pipe and an air guide screw rod, the central air pipe is concentrically arranged on the inner side of the dewatering outer pipe, and a dewatering working channel is formed between the inner circumference of the dewatering outer pipe and the outer circumference of the central air pipe; the air guide screw rod is arranged in the central air pipe, air outlet holes are annularly and densely distributed in the periphery of the central air pipe, water filtering holes are annularly and densely distributed in the periphery of the dewatering outer pipe, and high-pressure air in the central air pipe is forced by the air guide screw rod to rotate and then is blown into the dewatering working channel from the air outlet holes; and the particles are driven by rotating high-pressure air to rotate at a high speed towards the particle output port to impact the water filtering holes, so that the dewatering effect is achieved. The particles are not in direct contact with a structure with sharp edges during air drying and dehydration, so that the influence on the surface of a product is reduced, and the generation of powder is reduced due to no high-speed impact.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic particle production equipment, in particular to rotor-free cyclone dehydration and drying equipment. Background Art

[0002] Common plastic granules include general-purpose plastics, engineering plastics, special plastics, masterbatches, etc. Granule manufacturing mainly goes through several processes such as reactor or extruder, strand water pelletizing or underwater pelletizing, among which contact with water is to enable the molten material to be quickly cooled and formed.

[0003] In the existing traditional dehydration devices, the particles are mainly impacted at high speed by rotor blades, so that the particles have a high initial velocity and hit the filter screen to achieve the dehydration effect on the particle surface. In this way, traces of being hit by the rotor blades will appear on the surface of the particles, and for products with high solid content, a large amount of crushed particles will be impacted, which is difficult to meet the requirements of products with high appearance.

[0004] In order to solve the problems of the conventional dehydrators mentioned above, the applicant has designed a rotorless cyclone dehydration and drying device. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a rotor-free cyclone dehydration and drying device.

[0006] In order to achieve the above-mentioned purpose, the utility model discloses a rotorless cyclone dehydration and drying device, comprising:

[0007] A dehydration and air-drying module, the dehydration and air-drying module comprises a dehydration outer tube, a central air tube and an air-guiding spiral rod, the central air tube is concentrically arranged on the inner side of the dehydration outer tube, a dehydration working channel is formed between the inner periphery of the dehydration outer tube and the outer periphery of the central air tube, a particle output port and a particle input port which are in communication with the dehydration working channel are arranged on the outer periphery of the dehydration outer tube, the air-guiding spiral rod is arranged in the central air tube, the outer periphery of the central air tube is densely distributed with air outlet holes in a ring shape, and the outer periphery of the dehydration outer tube is densely distributed with water filter holes in a ring shape.

[0008] A centrifugal fan is fixedly arranged at the bottom end of the central air duct and is used to blow high-pressure air into the central air duct. The formed plastic particles are input into the bottom of the dehydration working channel from the particle input port through the feeding and conveying module. The high-pressure air in the central air duct is forced to rotate by the air guide spiral rod and then blown into the dehydration working channel from the air outlet. The particles are driven by the rotating high-pressure air to rotate at high speed toward the particle output port and hit the water filter hole to achieve a dehydration effect.

[0009] A discharging module is used to receive the particles blown out from the particle output port.

[0010] Furthermore, the dehydration working channel is provided with a temporary storage section, a dehydration section, and a discharging section in sequence from bottom to top.

[0011] The particle input port is connected to the temporary storage section, and the particle output port is connected to the discharge section.

[0012] Furthermore, the particle input port and the particle output port are staggered in left and right directions.

[0013] Furthermore, a plurality of water filtering holes are densely distributed in an annular shape on the outer circumference of the dehydration outer tube opposite to the dehydration section.

[0014] Furthermore, a support flange is provided between the shaft end of the air guide spiral rod and the top end of the central air duct, and the air guide spiral rod can be rotatably adjusted through the support flange, thereby fine-tuning the starting direction of the spiral blades of the air guide spiral rod.

[0015] Furthermore, it also includes an equipment rack, the bottom of which is provided with an air inlet hole, and the centrifugal fan is fixedly arranged below the air inlet hole.

[0016] Furthermore, the top and bottom ends of the dehydration outer pipe and the central air duct are fixedly connected to the top and bottom of the equipment frame respectively, and the central air duct is connected to the air inlet through hole.

[0017] Furthermore, the spiral blades of the air-guiding spiral rod preferably have 3.5 turns and a pitch of 300 mm.

[0018] Furthermore, a third guide portion is provided at the bottom of the dehydration working channel, and the third guide portion is used to assist the particles to spirally move upward toward the particle output port. A fourth guide portion is provided at the top of the dehydration working channel, and the particles are guided to the particle output port through the fourth guide portion.

[0019] Compared with the prior art, the beneficial effects of the utility model are: by arranging an air-guiding spiral rod in cooperation with a central air duct with an air outlet to generate an upward spiral airflow into the dehydration working channel, thereby replacing the screw stirring in the prior art, so that the particles do not directly contact with the sharp-edged structure during air drying and dehydration, reducing the impact on the product surface, and reducing the generation of powder without high-speed impact; the device does not have a high-speed rotating device, which can reduce the wear of the equipment; the overall size of the equipment is small, the footprint is small, and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a top view of the overall structure of the utility model;

[0021] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0022] Figure 3 It is a side view schematic diagram of the overall connection structure of the material distributing device and the material suction and collecting device of the utility model;

[0023] Figure 4 It is a partial three-dimensional schematic diagram of the material dividing device of the utility model;

[0024] Figure 5 It is a partial front schematic diagram of the material dividing device of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will be combined with Figure 1-Figure 5 The utility model is further described in detail with reference to the accompanying drawings.

[0026] Reference Figure 1 As shown, a rotorless cyclone dehydration and drying device includes an equipment frame 1, a pre-dehydration module 2, a feeding and conveying module 3, a dehydration and air drying module 4, a centrifugal fan 5 and a discharging module 6.

[0027] The centrifugal fan 5 in this embodiment is preferably an industrial medium-pressure centrifugal fan 5 .

[0028] In this embodiment, the discharging module 6 is a cyclone separator.

[0029] The dehydration and air-drying module 4 is fixedly arranged in the equipment frame 1, the discharge end of the pre-dehydration module 2 is connected to the feed end of the feed conveying module 3, and the discharge end of the feed conveying module 3 is connected to the feed end of the dehydration and air-drying module 4.

[0030] Recombination Figure 2 As shown, the pre-dehydration module 2 includes a working box 21, a first guide plate 22 and a second guide plate 23. The top and bottom of the working box 21 are respectively provided with a feed port 211 and a discharge port 212, the feed port 211 and the discharge port 212 are staggered and respectively communicated with the inside of the working box 21. The bottom of the discharge port 212 is fixedly connected to the feed end of the feed conveying module 3.

[0031] The first guide plate 22 and the second guide plate 23 are respectively disposed on both sides of the working box 21 with the discharge port 212 as the center, and the first guide plate 22 is adjacent to the feed port 211 .

[0032] A first connecting plate 213 and a second connecting plate 214 are respectively disposed on both sides of the top of the discharge port 212 toward the working box body 21 . Both sides of the first connecting plate 213 and the second connecting plate 214 are respectively in contact with the front and rear inner side surfaces of the working box body 21 .

[0033] The first guide plate 22 is obliquely disposed between the first connecting plate 213 and an inner side surface of the working box body 21, and is staggered with the feed port 211. Specifically, the higher end of the first guide plate 22 is fixedly connected to the lower half of an inner side surface of the working box body 21, the lower end of the first guide plate 22 is connected to the top of the first connecting plate 213, and the front and rear edges of the first guide plate 22 are connected to the inner wall of the working box body 21.

[0034] Furthermore, a plurality of first drainage holes 221 are provided on the first guide plate 22 .

[0035] In this embodiment, the outer contour of the second guide plate 23 is V-shaped, and the tip of the second guide plate 23 faces the first guide plate 22 , which is conducive to guiding the material on the second guide plate 23 to flow onto the first guide plate 22 .

[0036] The two inclined surfaces of the second guide plate 23 are respectively set as a first guide part 231 and a second guide part 232. The first guide part 231 is opposite to the feed port 211 in vertical direction, and the second guide part 232 is opposite to the discharge port 212 in vertical direction. The lower end of the second guide part 232 is connected to the top of the second connecting plate 214.

[0037] The material guiding channel formed between the second guide portion 232 and the first guide plate 22 is conducive to the flow of materials to the discharge port 212 .

[0038] Furthermore, a plurality of second drainage holes 233 are disposed on the surface of the first guide portion 231 .

[0039] Furthermore, a first drainage cavity 24 is formed between the bottom surface of the first guide plate 22, the first connecting plate 213, and the bottom of the working box body 21, and a second drainage cavity 25 is formed between the bottom surface of the first guide portion 231, the bottom of the working box body 21, and the second connecting plate 214. Drainage ports are provided at the bottoms of the first drainage cavity 24 and the second drainage cavity 25.

[0040] Reference Figure 3 As shown, the feed conveying module 3 includes a feed pipe 31, a feed screw and a feed drive source 32. One end of the feed pipe 31 passes through the outer wall of the equipment frame 1 and is connected to the feed end of the dehydration and air drying module 4, and the outer periphery of the feed pipe 31 is fixedly connected to the outer wall of the equipment frame 1. The feed screw is rotatably arranged in the feed pipe 31, and the feed drive source 32 is fixedly arranged at the other end of the feed pipe 31, and the end of the feed screw is fixedly connected to the power output end of the feed drive source 32.

[0041] In this embodiment, the feed drive source 32 is a motor coupled with a reducer.

[0042] Furthermore, the feed pipe 31 is tilted to facilitate the flow of materials. Specifically, the end of the feed pipe 31 connected to the dehydration and air drying module 4 is the lower end. A connecting portion 311 is provided on the outer periphery of the higher end of the feed pipe 31. The connecting portion 311 is connected to the inside of the feed pipe 31, and the discharge port 212 of the working box 21 is connected to the connecting portion 311.

[0043] When the pre-dehydration module 2 and the feed conveying module 3 are working, the following steps are included:

[0044] S1: The feed port 211 of the working box 21 is arranged below the output end of the pelletizer. The pellets output from the pelletizer fall onto the first guide portion 231 through the feed port 211 and are guided by the first guide portion 231 to flow to the second guide plate 23 and the guide channel in sequence, and then are output from the discharge port 212. When the product pellets containing a large amount of water flow through the first guide portion 231 and the second guide plate 23, most of the water will be discharged under the action of the first drainage hole 221 and the second drainage hole 233. The discharged water is temporarily stored in the first drainage cavity 24 and the second drainage cavity 25 and discharged from the working box 21 through the drainage port.

[0045] S2: The pre-dehydrated particles are output from the discharge port 212 and fall into the feed pipe 31 through the connection portion 311 . The feed drive source 32 drives the feed screw to rotate and drives the particles to move toward the feed end of the dehydration and air-drying module 4 in an orderly manner.

[0046] Reference Figure 4 As shown, an air inlet hole 11 is provided at the bottom of the equipment frame 1 , and the centrifugal fan 5 is fixedly arranged below the air inlet hole 11 . Specifically, an air outlet end of the centrifugal fan 5 is connected to the air inlet hole 11 .

[0047] The dehydration and air-drying module 4 includes a dehydration outer tube 41 , a central air duct 42 and an air guide spiral rod 43 .

[0048] The top and bottom ends of the dehydration outer tube 41 are fixedly connected to the top and bottom of the equipment frame 1 respectively. The dehydration outer tube 41 is concentrically arranged with the air inlet hole 11 , and its inner diameter is larger than the diameter of the air inlet hole 11 .

[0049] The central air duct 42 is fixedly arranged in the dehydration outer tube 41, and the top and bottom ends of the central air duct 42 are respectively fixedly connected to the top and bottom of the equipment rack 1. The central air duct 42 is concentrically arranged with the dehydration outer tube 41. In this embodiment, the inner diameter of the central air duct 42 is larger than the diameter of the air inlet hole 11.

[0050] Furthermore, a dehydration working channel 44 is formed between the inner periphery of the dehydration outer tube 41 and the outer periphery of the central air duct 42. The dehydration working channel 44 is provided with a temporary storage section 441, a dehydration section 442, and a discharge section 443 in sequence from bottom to top.

[0051] Reference Figure 3As shown, a particle input port 411 is provided on the periphery of the lower half of the dehydration outer tube 41, and the particle input port 411 is connected to the temporary storage section 441. A particle output port 412 is provided on the periphery of the upper half of the dehydration outer tube 41, and the particle output port 412 is connected to the discharge section 443. In this embodiment, the particle input port 411 and the particle output port 412 are staggered.

[0052] The lower end of the feed pipe 31 is fixedly connected to the outer periphery of the dehydration outer pipe 41 and communicates with the particle input port 411. The feed end of the discharge module 6 is fixedly connected to the outer periphery of the dehydration outer pipe 41 through a pipeline and communicates with the particle output port 412.

[0053] Reference Figure 4 As shown, further, the outer periphery of the central air duct 42 is densely annularly distributed with air outlet holes 421, and the interior of the central air duct 42 is communicated with the dehydration working channel 44 through the air outlet holes 421;

[0054] The outer circumference of the dehydration outer tube 41 opposite to the dehydration section 442 is densely distributed with water filtering holes 413 in an annular shape.

[0055] The air guiding spiral rod 43 is disposed in the central air duct 42 and is coaxially disposed with the air inlet through hole 11 . The bottom end of the air guiding spiral rod 43 is located above the air inlet through hole 11 .

[0056] A support flange 7 is provided on the top of the equipment frame 1, and the shaft end of the air guide screw rod 43 is sleeved on the support flange 7. The air guide screw rod 43 can be rotated and adjusted through the support flange 7, and then the starting direction of the spiral blades of the air guide screw rod 43 is finely adjusted, so that when the high-pressure air output by the centrifugal fan 5 enters the central air duct 42, it starts to blow from the particle input port 411 to the particle output port 412, so as to prevent the wind flowing out of the central air duct 42 from blowing back to the particle input port 411, so that the particles cannot move upward.

[0057] In this embodiment, the spiral blades of the air guide spiral rod 43 preferably have 3.5 turns, and the pitch is 300 mm.

[0058] Reference Figure 5 As shown, further, a third guide portion 441-1 is provided at the bottom of the temporary storage section 441, and the third guide portion 441-1 is provided in a spiral upward arrangement around the outer periphery of the central air duct 42. Specifically, a lower end of the third guide portion 441-1 is opposite to the particle input port 411 in front and back, and a higher end of the third guide portion 441-1 is higher than the particle input port 411;

[0059] A fourth guide portion 443 - 1 is provided at the top of the discharge section 443 and is spirally arranged around the outer circumference of the central air duct 42 toward the particle output port 412 . The particles in the discharge section 443 are guided to the particle output port 412 through the fourth guide portion 443 - 1 .

[0060] When the dehydration and air drying module 4 is working, the pre-dehydrated particles are input into the temporary storage section 441 from the particle input port 411, and the centrifugal fan 5 is started to output high-pressure air to the air inlet hole 11. Under the action of the air guide screw 43, the high-pressure air in a single direction output from the air inlet hole 11 rotates in the central air duct 42 and blows from the air outlet 421 to the dehydration working channel 44, thereby driving the particles in the temporary storage section 441 to rotate at high speed toward the dehydration section 442 and the discharge section 443. When the particles rotate in the dehydration section 442, they collide with the inner periphery of the dehydration outer tube 41. At this time, a small amount of water adhering to the surface of the particles will be discharged from the water filter hole 413 due to the impact force and the action of wind blowing, thereby obtaining dry particles.

[0061] When the particles are in the discharge section 443, the airflow output by the central air duct 42 cooperates with the fourth guide portion 443-1 to guide the particles to be output to the particle output port 412 and enter the discharge module 6 for unified collection.

[0062] In this embodiment, an air guide spiral rod 43 is provided to cooperate with a central air duct 42 with an air outlet hole 421 to generate an upward spiral airflow into a dehydration working channel 44, thereby replacing the screw stirring in the prior art, so that the particles do not directly contact with structures with sharp edges during air drying and dehydration, thereby reducing the impact on the product surface and reducing the generation of powder without high-speed impact; the device does not have a high-speed rotating device, which can reduce the wear of the equipment; the overall size of the equipment is small, the footprint is small, and the efficiency is high;

[0063] At the same time, high pressure will be generated inside the central air duct due to the action of the centrifugal fan, which will affect the material input at the particle input port. Therefore, this embodiment adopts a feeding screw rod to realize the input of particles, and uses its spiral blades to block and prevent the high-pressure airflow in the dehydration and drying module from leaking from the particle input port.

[0064] Of course, the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical scheme of the utility model should be included in the protection scope of the utility model.

Claims

1. A rotorless cyclone dehydration and drying device, characterized in that: include: A dehydration and air-drying module (4), the dehydration and air-drying module (4) comprising a dehydration outer tube (41), a central air tube (42) and an air-guiding spiral rod (43), the central air tube (42) being concentrically arranged on the inner side of the dehydration outer tube (41), a dehydration working channel (44) being formed between the inner periphery of the dehydration outer tube (41) and the outer periphery of the central air tube (42), a particle output port (412) and a particle input port (411) being arranged on the outer periphery of the dehydration outer tube (41) and being in communication with the dehydration working channel (44), the air-guiding spiral rod (43) being arranged in the central air tube (42), the outer periphery of the central air tube (42) being densely distributed in an annular manner with air outlet holes (421), and the outer periphery of the dehydration outer tube (41) being densely distributed in an annular manner with water filter holes (413); A centrifugal fan (5), the centrifugal fan (5) being fixedly arranged at the bottom end of the central air duct (42) for blowing high-pressure air into the central air duct (42); the formed plastic particles are fed into the bottom of the dehydration working channel (44) from the particle input port (411) through the feeding and conveying module (3); the high-pressure air in the central air duct (42) is forced to rotate by the air guide screw rod (43) and then blown into the dehydration working channel (44) from the air outlet (421); the particles are driven by the rotating high-pressure air to rotate at high speed toward the particle output port (412) and hit the water filter hole (413), thereby achieving a dehydration effect; A discharge module (6), the discharge module (6) being used to receive particles blown out from the particle output port (412).

2. The rotorless cyclone dehydration and drying equipment according to claim 1, characterized in that: The dehydration working channel (44) is provided with a temporary storage section (441), a dehydration section (442), and a discharge section (443) in order from bottom to top; The particle input port (411) is in conduction with the temporary storage section (441), and the particle output port (412) is in conduction with the discharge section (443).

3. The rotorless cyclone dehydration and drying equipment according to claim 1 or 2, characterized in that: The particle input port (411) and the particle output port (412) are staggered in left and right directions.

4. The rotorless cyclone dehydration and drying equipment according to claim 2, characterized in that: A plurality of water filtering holes (413) are densely distributed in an annular pattern on the outer circumference of the dehydration outer tube (41) opposite to the dehydration section (442).

5. The rotorless cyclone dehydration and drying equipment according to claim 1, characterized in that: A support flange (7) is provided between the shaft end of the air guide spiral rod (43) and the top end of the central air duct (42), and the air guide spiral rod (43) can be rotatably adjusted through the support flange (7), thereby finely adjusting the starting direction of the spiral blades of the air guide spiral rod (43).

6. The rotorless cyclone dehydration and drying equipment according to claim 1, characterized in that: It also comprises an equipment frame (1), wherein an air inlet hole (11) is provided at the bottom of the equipment frame (1), and the centrifugal fan (5) is fixedly arranged below the air inlet hole (11).

7. The rotorless cyclone dehydration and drying equipment according to claim 6, characterized in that: The top and bottom ends of the dehydration outer pipe (41) and the central air pipe (42) are respectively fixedly connected to the top and bottom of the equipment frame (1), and the central air pipe (42) is in communication with the air inlet through hole (11).

8. The rotorless cyclone dehydration and drying equipment according to claim 1, characterized in that: The spiral blade of the air guide spiral rod (43) has 3.5 turns and a pitch of 300 mm.

9. The rotorless cyclone dehydration and drying equipment according to claim 1 or 2, characterized in that: A third guide portion (441-1) is provided at the bottom of the dehydration working channel (44), and the third guide portion (441-1) is used to assist the particles in spirally moving upward in the direction of the particle output port (412). A fourth guide portion (443-1) is provided at the top of the dehydration working channel (44), and the particles are guided to the particle output port (412) via the fourth guide portion (443-1).

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