Plastic particle cooling device and integrated waste gas treatment system based on the device

Abstract

The invention relates to a plastic particle cooling device and an integrated waste gas treatment system based on the device, comprising a cooling inner cylinder and a rotating shaft coaxially arranged in the cooling inner cylinder, the outer wall of the cooling inner cylinder is covered with ventilation holes, a first stirring component is arranged on the rotating shaft, the first stirring component comprises a stirring rod uniformly arranged on the outer wall of the rotating shaft along the circumference, a material stripping plate is arranged at the outer end of the stirring rod, a transmission shaft is rotatably arranged on the stirring rod and below the material stripping plate, two ends of the transmission shaft extend outwardly to both sides of the stirring rod and are connected with scattering blades, a transmission component is also arranged on the stirring rod, when the stirring rod rotates with the rotating shaft, the transmission shaft can be driven to rotate by the transmission component, and a single-power driving device is also included, the single-power driving device is used to drive the cooling inner cylinder and the rotating shaft to rotate synchronously in opposite directions; the plastic particles in the cooling inner cylinder can be quickly cooled, and the waste gas generated in the cooling process can be collected and processed, thereby achieving the purpose of cooling the plastic particles and collecting and treating the waste gas.

Description

Technical Field

[0001] The present invention relates to the field of low-carbon environmental protection, and in particular to a plastic particle cooling device and an integrated waste gas treatment system based on the device. Background Art

[0002] Plastic granulators are mainly used for processing waste plastic film, industrial packaging film, agricultural mulch film, greenhouse film, beer bags, handbags, woven bags, agricultural convenience bags, basins, barrels, beverage bottles, furniture, daily necessities, etc. They are suitable for most common waste plastics and are the most widely used, most widely used and most popular plastic recycling processing machinery in the waste plastic recycling industry. However, most of the existing granulators change the shape of plastic particles through the process of high-temperature melting, plasticization and extrusion, so as to achieve the purpose of shaping the plastic particles; then, the plastic particles are cooled by a cooling device. The traditional cooling method mainly uses water cooling by spraying, but for water-soluble plastic particles, this method cannot be used because spraying will cause the particles to dissolve.

[0003] Therefore, a cooling method of vibrating screen plus fan is generally used for soluble plastic particles. However, this cooling method is not convenient for quickly dissipating heat from plastic particles, and the heat dissipation efficiency is low, resulting in an unclear cooling effect and easily causing the plastic particles to stick together.

[0004] In addition, a large amount of odorous gases will be generated during the cooling process. These gases are usually not effectively treated and are directly discharged into the working environment. They are toxic and harmful, seriously affecting the working environment and employee health. Therefore, although the cooling efficiency is improved by using water pipe heat exchange, the problem of pollution to the working environment has not been solved. If the cooling device is sealed and the exhaust gas is drained and discharged according to the requirements of exhaust gas emission, the cooling water temperature will increase, and the energy consumption for cooling the circulating cooling water will also increase. It is difficult to take into account both low-carbon and environmentally friendly cooling and exhaust gas treatment.

[0005] Therefore, how to effectively cool soluble plastic particles while taking into account low carbon and environmental protection has become a topic that needs to be improved. Summary of the invention

[0006] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes an integrated system that can solve the cooling and temperature reduction of soluble plastic particles in a low-carbon manner while taking into account waste gas treatment.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The plastic particle cooling device comprises a cooling inner cylinder and a rotating shaft coaxially rotatable in the cooling inner cylinder, a first stirring component is arranged on the rotating shaft, the first stirring component comprises stirring rods uniformly distributed along the circumference of the outer wall of the rotating shaft, a material stripping plate is arranged at the outer end of the stirring rod, a transmission shaft is rotatably arranged on the stirring rod and below the material stripping plate, both ends of the transmission shaft extend outwardly to both sides of the stirring rod and are connected with breaking blades, a transmission component is also arranged on the stirring rod, when the stirring rod rotates with the rotating shaft, the transmission shaft can be driven to rotate by itself through the transmission component, and also comprises a single-power drive device, the single-power drive device is used to drive the cooling inner cylinder and the rotating shaft to rotate synchronously in opposite directions.

[0009] In some embodiments, a cavity is provided in the stirring rod, the transmission shaft is passed through the cavity, the transmission assembly includes a first synchronous pulley provided on the transmission shaft and located in the cavity, a second synchronous pulley is rotatably installed at the upper end of the cavity, a synchronous belt is sleeved between the first synchronous pulley and the second synchronous pulley, friction wheels are coaxially provided at both ends of the second synchronous pulley, the circumferential outer wall of the friction wheel is exposed at the upper end of the cavity, and the exposed part can roll on the inner wall of the cooling inner cylinder.

[0010] In some embodiments, it also includes a front support frame, a middle support frame and an end support frame, the cooling inner cylinder is rotatably arranged on the middle support frame, a discharge cylinder is connected between the middle support frame and the end support frame, a discharge opening is arranged at the lower end of the discharge cylinder, one end of the discharge cylinder is connected to the end of the cooling inner cylinder, a circular hole is penetrated on the front support frame, the front end of the cooling inner cylinder extends forward to form an extension cylinder, and the end of the extension cylinder is rotatably arranged in the circular hole.

[0011] In some embodiments, a rotating shaft supporting cross bar is disposed in the circular hole, one end of the rotating shaft is rotatably disposed on the rotating shaft supporting cross bar, and the other end of the rotating shaft is rotatably disposed on the discharge barrel.

[0012] In some embodiments, the single-power drive device includes a motor arranged on the discharge barrel, a power gear is arranged at one end of the rotating shaft, the other end of the rotating shaft is fixedly connected to the output shaft of the motor, a transmission gear group that can mesh with the power gear is rotatably installed on one side of the rotating shaft supporting the cross bar, and an inner gear ring that can mesh with the transmission gear group is arranged on the inner wall of the extension barrel.

[0013] In some embodiments, two groups of first stirring components are arranged on the rotating shaft at intervals, and a second stirring component is arranged on the inner wall of the cooling inner cylinder, and the second stirring component is arranged between the two groups of first stirring components.

[0014] In some embodiments, a feed box and a granulator are also included. One end of the feed box is connected to the circular hole through a hose, and the other end is connected to a cold air mechanism that can blow out cold air. The discharge port of the granulator is connected to the upper end of the feed box.

[0015] In some embodiments, a vibration motor is disposed at the upper end of the feed box, and an elastic vibration seat is connected to the lower end of the feed box.

[0016] The present invention also provides an integrated waste gas treatment system based on a plastic particle cooling device, comprising a waste gas treatment device and the above-mentioned plastic particle cooling device, wherein a cooling outer cylinder is arranged outside the cooling inner cylinder, a ventilation cavity is formed between the outer wall of the cooling inner cylinder and the inner wall of the cooling outer cylinder, ventilation holes are densely distributed on the outer wall of the cooling inner cylinder and in the ventilation cavity, a waste gas outlet is arranged on one side wall of the cooling outer cylinder, and the waste gas outlet is connected to the waste gas treatment device through a pipe.

[0017] In some embodiments, a plurality of air nozzles are evenly distributed along the circumference on the front end outer wall of the cooling outer cylinder, and the air jet direction of the air nozzles is toward the end of the cooling inner cylinder and inclined inward.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The pelletized plastic particles are transported to the cold-cut inner cylinder, and the plastic particles are stirred and dispersed by the first stirring component on the rotating shaft to prevent the plastic particles from sticking.

[0020] 2. The first stirring assembly includes a stirring rod and a material-shifting plate. When the shaft rotates, the plastic particles accumulated on the inner wall of the cooling inner cylinder can be shifted by the material-shifting plate to prevent accumulation and better disperse the plastic particles.

[0021] 3. In addition, there are rotatable breaking blades on both sides of the stirring rod. When the material-dispensing plate lifts up the plastic particles and drops them down, the breaking blades can break up the plastic again to further disperse the plastic particles.

[0022] 4. The rotation of the scattering blades is driven by the transmission assembly, and no additional power mechanism is required. Therefore, through clever design, it can save costs and reduce energy consumption.

[0023] 5. At the same time, the cooling inner cylinder and the rotating shaft are driven by a single power drive device to rotate synchronously in opposite directions, further allowing the plastic particles to be fully dispersed.

[0024] 6. In addition, a cooling outer cylinder is arranged outside the cooling inner cylinder, a ventilation cavity is formed between the inner wall of the cooling inner cylinder and the outer wall of the cooling outer cylinder, ventilation holes are densely distributed on the outer wall of the cooling outer cylinder and in the ventilation cavity, a waste gas outlet is arranged on one side wall of the cooling outer cylinder, and the waste gas outlet is connected to the waste gas treatment device through a pipeline, so that the waste gas generated during the cooling process can enter the ventilation cavity from the ventilation holes, and then enter the waste gas treatment device from the waste gas outlet of the cooling outer cylinder for treatment, thereby achieving the purpose of cooling the plastic particles and collecting and treating the waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the device of the present invention.

[0026] Figure 2 It is a schematic top view of the device of the present invention.

[0027] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional view at AA.

[0028] Figure 4 It is a partial cross-sectional schematic diagram of the present invention.

[0029] Figure 5 It is a schematic structural diagram of the first stirring assembly of the present invention.

[0030] Figure 6 It is a partial top view schematic diagram of the present invention.

[0031] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-section at BB.

[0032] Figure 8 For the present invention Figure 7 An enlarged schematic diagram of point A. DETAILED DESCRIPTION

[0033] The following specific implementation contents provide a variety of different embodiments or examples for implementing the present invention. Of course, these are only embodiments or examples and do not wish to be restrictive. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0034] like Figure 1-Figure 8 The plastic particle cooling device shown includes a feed box 71, a granulator 72 and a cooling inner cylinder 2. One end of the feed box 71 is connected to the cooling inner cylinder 2 through a hose, and the other end is connected to a cold air mechanism 73 that can blow out cold air. The discharge port of the granulator 72 is connected to the upper end of the feed box 71.

[0035] The plastic particles are cut from the granulator 72 and enter the feed box 71, and then the plastic particles are blown into the cooling inner cylinder 2 by the cold air mechanism 73 for cooling.

[0036] The plastic particles are in a high temperature state after being cut by the granulator 72 and are easy to stick together. Therefore, a vibration motor 81 is provided at the upper end of the feed box 71, and an elastic vibration seat 82 is connected to the lower end of the feed box 71; the vibration motor 81 and the elastic vibration seat 82 cooperate to drive the feed box 71 to vibrate, thereby preventing the plastic particles in the feed box 71 from sticking together.

[0037] In the present invention, the plastic particle cooling device includes a cooling inner cylinder 2 and a rotating shaft 4 coaxially rotatably arranged in the cooling inner cylinder 2. The outer wall of the cooling inner cylinder 2 is covered with ventilation holes. A first stirring component is arranged on the rotating shaft 4. The first stirring component includes a stirring rod 10 uniformly arranged on the outer wall of the rotating shaft 4 along the circumference. A material stripping plate 11 is arranged at the outer end of the stirring rod 10. A transmission shaft 12 is rotatably arranged on the stirring rod 10 and below the material stripping plate 11. Both ends of the transmission shaft 12 extend outwardly to both sides of the stirring rod 10 and are connected with breaking blades 13. A transmission component is also arranged on the stirring rod 10. When the stirring rod 10 rotates with the rotating shaft 4, the transmission shaft 12 can be driven to rotate by itself through the transmission component. A single-power drive device is also included. The single-power drive device is used to drive the cooling inner cylinder 2 and the rotating shaft 4 to rotate synchronously in opposite directions.

[0038] The pelletized plastic particles are transported from the feed box 71 to the cold-cut inner cylinder 2, and are stirred and broken up by the first stirring component on the rotating shaft 4 to prevent the plastic particles from sticking together; the first stirring component includes a stirring rod 10 and a material shifting plate 11. When the rotating shaft 4 rotates, the plastic particles accumulated on the inner wall of the cooling inner cylinder 2 can be shifted by the material shifting plate 11 to prevent them from accumulating and to better disperse the plastic particles.

[0039] At the same time, scattering blades 13 are rotatably arranged on both sides of the stirring rod 10. When the material-discharging plate 11 pushes the plastic particles up and drops them down, the plastic can be broken up again by the scattering blades 13 to further disperse the plastic particles. In addition, the rotation of the scattering blades 13 is driven by a transmission component without the need for an additional power mechanism to drive it. Thus, the clever design can save costs and reduce energy consumption.

[0040] At the same time, the cooling inner cylinder 2 and the rotating shaft 4 are driven by a single power driving device to rotate synchronously in opposite directions, further allowing the plastic particles to be fully dispersed.

[0041] See also Figure 3 , Figure 7 , Figure 8 As shown, a cavity 21 is provided in the stirring rod 10, the transmission shaft 12 is penetrated in the cavity 21, the transmission assembly includes a first synchronous pulley 22 provided on the transmission shaft 12 and located in the cavity 21, a second synchronous pulley 23 is rotatably mounted on the upper end of the cavity 21, a synchronous belt 24 is sleeved between the first synchronous pulley 22 and the second synchronous pulley 23, friction wheels 25 are coaxially provided at both ends of the second synchronous pulley 23, the circumferential outer wall of the friction wheel 25 is exposed at the upper end of the cavity 21, and the exposed part can roll on the inner wall of the cooling inner cylinder 2.

[0042] The principle of the transmission assembly is as follows: when the stirring rod 10 rotates following the rotating shaft 4, the circumferential outer wall of the friction wheel 25 rolls on the cooling inner cylinder 2, so that the friction wheel 25 follows the rotation, driving the second synchronous pulley 23 to rotate, and at the same time, through the action of the synchronous belt 24 and the first synchronous pulley 22, the transmission shaft 12 is driven to rotate, and then the beating blades 13 are driven to rotate.

[0043] It is worth noting that the material-shifting plate 11 and the scattering blades 13 rotate in opposite directions, so that the plastic particles are picked up and dropped in a counterclockwise direction by the material-shifting plate 11, and then scattered by the scattering blades 13 from a clockwise direction, thereby better scattering the plastic particles in the cooling inner circle 2.

[0044] See also Figure 1-Figure 4 As shown, it also includes a front support frame 31, a middle support frame 32 and an end support frame 33. The cooling inner cylinder 2 is rotatably arranged on the middle support frame 32 in a horizontal manner. A discharge cylinder 34 is connected between the middle support frame 32 and the end support frame 33. A discharge opening 37 is arranged at the lower end of the discharge cylinder 34. One end of the discharge cylinder 34 is connected to the end of the cooling inner cylinder 2. A circular hole 35 is arranged through the front support frame 31. The front end of the cooling inner cylinder 2 extends forward to form an extension cylinder 36. The end of the extension cylinder 36 is rotatably arranged in the circular hole 35. The other end of the circular hole 35 is connected to the feed box 71 through a hose. The extension cylinder 36 and the cooling inner cylinder 2 are integrally formed.

[0045] Furthermore, a shaft supporting cross bar 41 is provided in the circular hole 35 , one end of the shaft 4 is rotatably provided on the shaft supporting cross bar 41 , and the other end is rotatably provided on the discharge cylinder 34 ; thereby, the cooling inner cylinder 2 and the shaft 4 can be better fixedly supported.

[0046] See also Figure 4 , Figure 7As shown, the single-power drive device includes a motor 51 arranged on the discharge barrel 34, a power gear 52 is arranged at one end of the rotating shaft 4, the other end of the rotating shaft 4 is fixedly connected to the output shaft of the motor 51, and a transmission gear set 53 that can mesh with the power gear 52 is rotatably installed on one side of the rotating shaft supporting cross bar 41, and an inner gear ring 54 that can mesh with the transmission gear set 53 is arranged on the inner wall of the extension barrel 36.

[0047] The working principle of the single-power drive device is as follows: the motor 51 drives the rotating shaft 4 to rotate counterclockwise, so that the first stirring component rotates counterclockwise to stir and disperse. At the same time, the power gear 52 on the rotating shaft 4 rotates, and through the meshing cooperation of the transmission gear set 53, the inner gear ring 54 rotates clockwise, and then the extension cylinder 36 and the cooling inner cylinder 2 rotate clockwise, realizing the rotation of the rotating shaft 4 and the cooling inner cylinder 2 in opposite directions.

[0048] See also Figure 3 , Figure 4 As shown, two groups of first stirring components are arranged on the rotating shaft 4 at intervals, and a second stirring component 61 is arranged on the inner wall of the cooling inner cylinder 2, and the second stirring component 61 is arranged between the two groups of first stirring components; because the rotating shaft 4 and the cooling inner cylinder 2 rotate in opposite directions, the first stirring component and the second stirring component rotate in opposite directions, thereby allowing the plastic particles to be fully dispersed.

[0049] In addition, a large amount of odorous gas will be generated during the cooling process in the cooling inner cylinder 2. If these gases are not effectively treated and directly discharged into the working environment, they will seriously affect the working environment and employee health. Therefore, the present invention also provides an integrated waste gas treatment system based on a plastic particle cooling device to solve this problem.

[0050] Specifically, the integrated waste gas treatment system based on the plastic particle cooling device includes a waste gas treatment device and the above-mentioned plastic particle cooling device, wherein a cooling outer cylinder 1 is arranged outside the cooling inner cylinder 2, and a ventilation cavity 91 is formed between the outer wall of the cooling inner cylinder 2 and the inner wall of the cooling outer cylinder 1, and ventilation holes 92 are densely distributed on the outer wall of the cooling inner cylinder 2 and in the ventilation cavity 91, and a waste gas outlet 93 is arranged on one side wall of the cooling outer cylinder 1, and the waste gas outlet 93 is connected to the waste gas treatment device through a pipeline.

[0051] Therefore, the waste gas generated during the cooling process can enter the ventilation cavity 91 from the vent hole 92, and then enter the waste gas treatment device from the waste gas outlet 93 of the cooling outer cylinder 1 for treatment, thereby achieving the purpose of cooling the plastic particles and collecting and treating the waste gas.

[0052] Furthermore, a plurality of air nozzles 100 are evenly distributed along the circumference on the outer wall of the front end of the cooling outer cylinder 1, and the air jet direction of the air nozzle 100 is toward the end of the cooling inner cylinder 2 and inclined inward; the air is sprayed through the air nozzle 100, which can cool the cooling inner cylinder 2 and the plastic particles. In addition, it can be used to transport the plastic particles, and can transport the plastic particles to the end of the cooling inner cylinder 2, so as to facilitate the discharge of the plastic particles.

[0053] It is worth mentioning that, as the plastic particles are cooled down inside the cooling inner cylinder 2, waste gas will be volatilized, and the temperature inside the cooling inner cylinder 2 will also increase; therefore, by providing air holes on the outer wall of the cooling inner cylinder 2 and by using a cold air mechanism 72 for air cooling, the plastic particles can be cooled to prevent the plastic particles from sticking together, and the waste gas can be collected at the same time, which is also the main innovation of the present invention.

[0054] In conjunction with the drawings and the above, the basic principles and main features of the present invention and the advantages of the present invention are shown and described. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Plastic particle cooling device, characterized in that: The invention comprises a cooling inner cylinder (2) and a rotating shaft (4) coaxially rotatably arranged in the cooling inner cylinder (2), a first stirring assembly being arranged on the rotating shaft (4), the first stirring assembly comprising stirring rods (10) uniformly arranged on the outer wall of the rotating shaft (4) along the circumference, a material shifting plate (11) being arranged at the outer end of the stirring rod (10), a transmission shaft (12) being rotatably arranged on the stirring rod (10) and below the material shifting plate (11), the two ends of the transmission shaft (12) extending outwardly to the two sides of the stirring rod (10) and connected to beating blades (13), and a transmission assembly being further arranged on the stirring rod (10), and when the stirring rod (10) rotates following the rotating shaft (4), the stirring rod (10) can be driven by the transmission assembly The transmission shaft (12) rotates on its own. A cavity (21) is provided in the stirring rod (10). The transmission shaft (12) is inserted into the cavity (21). The transmission assembly comprises a first synchronous pulley (22) provided on the transmission shaft (12) and located in the cavity (21). A second synchronous pulley (23) is rotatably mounted on the upper end of the cavity (21). A synchronous belt (24) is sleeved between the first synchronous pulley (22) and the second synchronous pulley (23). Friction wheels (25) are coaxially provided at both ends of the second synchronous pulley (23). The circumferential outer wall of the friction wheel (25) is exposed at the upper end of the cavity (21), and the exposed portion can roll on the inner wall of the cooling inner cylinder (2). The transmission assembly also comprises a single A power drive device, wherein the single power drive device is used to drive the cooling inner cylinder (2) and the rotating shaft (4) to rotate synchronously in opposite directions, and further comprises a front section support frame (31), a middle section support frame (32) and a terminal support frame (33), wherein the cooling inner cylinder (2) is rotatably arranged on the middle section support frame (32), and a discharge cylinder (34) is connected between the middle section support frame (32) and the terminal support frame (33), and a discharge opening (37) is arranged at the lower end of the discharge cylinder (34), and one end of the discharge cylinder (34) is connected to the terminal end of the cooling inner cylinder (2), and a circular hole (35) is provided through the front section support frame (31), and the front end of the cooling inner cylinder (2) extends forward to form an extension cylinder (36), and the extension cylinder ( The end of the rotating shaft (36) is rotatably arranged in the circular hole (35), and a rotating shaft supporting cross bar (41) is arranged in the circular hole (35). One end of the rotating shaft (4) is rotatably arranged on the rotating shaft supporting cross bar (41), and the other end is rotatably arranged on the discharge barrel (34). The single-power drive device includes a motor (51) arranged on the discharge barrel (34), one end of the rotating shaft (4) is provided with a power gear (52), and the other end of the rotating shaft (4) is fixedly connected to the output shaft of the motor (51), a transmission gear set (53) that can mesh with the power gear (52) is rotatably installed on one side of the rotating shaft supporting cross bar (41), and an inner gear ring (54) that can mesh with the transmission gear set (53) is arranged on the inner wall of the extension barrel (36).

2. The plastic particle cooling device according to claim 1, characterized in that: Two groups of first stirring assemblies are arranged at intervals on the rotating shaft (4), and a second stirring assembly (61) is arranged on the inner wall of the cooling inner cylinder (2), wherein the second stirring assembly (61) is arranged between the two groups of first stirring assemblies.

3. The plastic particle cooling device according to claim 1, characterized in that: It also includes a feed box (71) and a granulator (72); one end of the feed box (71) is connected to the circular hole (35) via a hose, and the other end is connected to a cold air mechanism (73) capable of blowing out cold air; the discharge port of the granulator (72) is connected to the upper end of the feed box (71).

4. The plastic particle cooling device according to claim 3, characterized in that: A vibration motor (81) is arranged at the upper end of the feed box (71), and an elastic vibration seat (82) is connected to the lower end of the feed box (71).

5. Integrated waste gas treatment system based on plastic particle cooling device, characterized by: The invention comprises a waste gas treatment device and a plastic particle cooling device as claimed in any one of claims 1 to 4, wherein a cooling outer cylinder (1) is arranged outside the cooling inner cylinder (2), a ventilation cavity (91) is formed between the outer wall of the cooling inner cylinder (2) and the inner wall of the cooling outer cylinder (1), ventilation holes (92) are densely distributed on the outer wall of the cooling inner cylinder (2) and in the ventilation cavity (91), a waste gas outlet (93) is arranged on one side wall of the cooling outer cylinder (1), and the waste gas outlet (93) is connected to the waste gas treatment device through a pipeline.

6. The integrated waste gas treatment system based on the plastic particle cooling device according to claim 5 is characterized in that: A plurality of air nozzles (100) are evenly distributed along the circumference on the front end outer wall of the cooling outer cylinder (1), and the air jet direction of the air nozzles (100) is toward the end of the cooling inner cylinder (2) and is inclined inward.

Images