Plastic particle cleaning device

Abstract

The utility model relates to a plastic particle cleaning device which comprises a friction cleaning mechanism used for primary cleaning of plastic particles and provided with a discharging port, and further comprises a second cleaning mechanism used for secondary cleaning of the plastic particles and connected to the discharging port. The second cleaning mechanism comprises a cleaning assembly and a conveying assembly located below the cleaning assembly, and the cleaning assembly comprises a cleaning cavity, rotary stirring units symmetrically arranged on the two sides of the cleaning cavity and a spraying unit installed in the cleaning cavity. The rotary stirring unit is used for stirring and hedging plastic particles falling into the cleaning cavity from the discharging opening, and the spraying unit is used for washing, spraying and conveying the dispersed plastic particles in the cleaning cavity. And the conveying assembly conveys the cleaned plastic particles to the next procedure. Dirt and impurities on the surfaces of plastic particles can be efficiently cleaned, and the problem that an existing friction cleaning mechanism cannot clean plastic thoroughly is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste plastic barrel resource treatment, in particular to a plastic particle cleaning device. Background Art

[0002] In order to save resources and improve the utilization rate of waste plastic barrel resources, waste plastic barrels are usually crushed and processed into plastic particles after recycling, and then the crushed plastic particles are cleaned to remove dirt and impurities on the plastic particles for reuse. In actual production, the cleaning of plastic particles generally uses a friction cleaning mechanism. During the cleaning and conveying process of plastic particles, the cleaning of plastic particles is achieved through the friction between plastic particles, between plastic particles and rotating blades, and between plastic particles and a sieve mesh. Due to the small friction force, the cleaning effect of plastic particles may be poor. Content of the Utility Model

[0003] Aiming at the above problems, the purpose of the utility model is to design a plastic particle cleaning device, which can efficiently clean the dirt and impurities on the surface of plastic particles and solve the problem that the existing friction cleaning mechanism cannot clean plastics thoroughly.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] Design a plastic particle cleaning device, including a friction cleaning mechanism for the primary cleaning of plastic particles. The friction cleaning mechanism has a discharge port, and further includes a second cleaning mechanism for the secondary cleaning of plastic particles and connected to the discharge port. The second cleaning mechanism includes a cleaning component and a conveying component located below the cleaning component. The cleaning component includes a cleaning chamber, rotating agitation units symmetrically arranged on both sides of the cleaning chamber, and a spraying unit installed inside the cleaning chamber. The rotating agitation units agitate and impact the plastic particles falling from the discharge port into the cleaning chamber, and the spraying unit sprays water on the plastic particles dispersed in the cleaning chamber. The conveying component conveys the cleaned plastic particles to the next process.

[0006] The plastic particle cleaning device designed in this scheme cleans the plastic particles twice during their conveying process, ensuring that the cleaned plastic particles are relatively clean. The crushed plastic is put into the friction cleaning mechanism, and the plastic particles are cleaned once by the internal conveying friction stirring parts. The cleaned plastic particles are discharged from the discharge port of the friction cleaning mechanism. A cleaning chamber is installed at the discharge port. The plastic particles falling from the discharge port into the cleaning chamber are stirred and offset by the rotating stirring unit, and rub against each other to achieve the effect of friction cleaning; at the same time, the spray unit sprays the plastic particles in the cleaning chamber with high pressure; through the cooperation of the rotating stirring unit and the spray unit, the material falling into the cleaning chamber is cleaned again, making it cleaner. The cleaned plastic particles fall into the conveying component and are conveyed to the next process for processing. The above design can efficiently clean the dirt and impurities on the surface of the plastic particles, solving the problem of the existing friction cleaning machine not cleaning the plastic cleanly.

[0007] Furthermore, the rotary stirring unit includes a rotary shaft rotatably arranged in the cleaning chamber, and a first driving member driving the rotary shaft to rotate, and rotary blades are provided on the outer periphery of the rotary shaft.

[0008] The two rotating stirring units are symmetrically arranged on the side walls on both sides of the cleaning chamber, and the rotation directions of the rotating shafts are opposite. The rotating blades rotate at high speed driven by the first driving member, forming a turbulent flow in the cleaning chamber. The plastic particles fall into the cleaning chamber. Under the action of the turbulent flow, the plastic particles will be stirred and impacted in the cleaning chamber, and then rub against each other, thereby achieving the purpose of cleaning.

[0009] Furthermore, the spray unit includes a plurality of cleaning nozzles arranged inside a cleaning chamber, the cleaning chamber is provided with a plurality of cleaning pipes, and the cleaning nozzles are connected to the cleaning pipes in a one-to-one correspondence.

[0010] The cleaning nozzle adopts a high-pressure nozzle to spray the plastic particles in the cleaning chamber, so that the plastic particles can further wash away the dirt and impurities during the stirring and mutual friction process.

[0011] Furthermore, the spray unit also includes a cleaning shaft arranged in the cleaning chamber and located below the rotating shaft, the outer periphery of the cleaning shaft is provided with cleaning blades, the end of the cleaning shaft is provided with a water inlet, the cleaning shaft is provided with a water inlet channel connected to the water inlet, and the outer wall of the cleaning blade is provided with a plurality of through holes connected to the water inlet channel.

[0012] The cleaning shaft is hollow in design, and its end is connected to the water inlet pipe. Cleaning blades are provided on the periphery of the cleaning shaft. The cleaning blades can be arranged crosswise or in parallel. There are multiple through holes dispersed on each cleaning blade for atomizing water spraying. Therefore, a water curtain is formed at the position of the cleaning shaft in the cleaning chamber, and the plastic particles are washed again when they fall through the water curtain.

[0013] Further, the conveying assembly includes a conveying chamber communicating with the cleaning chamber, a spiral blade rotatably disposed in the conveying chamber, and a second driving member for driving the spiral blade to rotate.

[0014] The conveying assembly adopts a spiral conveying form. The plastic particles cleaned by the cleaning assembly fall into the conveying chamber. A spiral blade is arranged in the conveying chamber. Driven by the second driving member, the spiral blade rotates and conveys the plastic particles away.

[0015] Further, a screen opening and a conveying outlet are formed at the bottom of the conveying chamber.

[0016] The screen opening is formed at the bottom of the conveying chamber. The sewage for cleaning the plastic particles by the cleaning assembly flows into the conveying chamber and then flows out from the screen opening. The conveying outlet is arranged at one end of the conveying chamber opposite to the installation position of the second driving member, and the conveying outlet is directly opposite to the material inlet of the next process.

[0017] Further, the friction cleaning mechanism includes a cleaning cylinder, a cleaning conveying shaft rotatably disposed in the cleaning cylinder, and a third driving member for driving the cleaning conveying shaft to rotate. The cleaning cylinder is further provided with a feed inlet and a discharge outlet, and the feed inlet and the discharge outlet are respectively arranged at two ends of the cleaning cylinder.

[0018] Driven by the third driving member, the cleaning conveying shaft in the cleaning cylinder rotates. After the crushed plastic particles are put into the cleaning cylinder from the feed inlet, the cleaning conveying shaft rotates to drive the plastic particles to move towards the discharge outlet, and at the same time agitates the plastic particles, so that the plastic particles rub against each other, and the plastic particles rub against the cleaning conveying shaft and the cleaning cylinder, thereby achieving the cleaning effect.

[0019] Further, a feed blade is arranged at one end of the cleaning conveying shaft located at the feed inlet, a discharge blade is arranged at one end of the cleaning conveying shaft located at the discharge outlet, and friction cleaning blades are arranged on the part of the cleaning conveying shaft between the feed inlet and the discharge outlet.

[0020] The feed blade is a spiral blade. Facing the feed inlet, the plastic particles put into the cleaning cylinder are driven by the spiral blade to move towards the friction cleaning blades. The friction cleaning blades are spirally and spacedly distributed. The space formed between two friction cleaning blades is used for the plastic particles to turn over. The spiral design makes the plastic particles gradually pushed towards the discharge outlet during the friction cleaning process and swept out by the discharge blade.

[0021] Further, the cleaning cylinder is further provided with a plurality of water inlets and water outlets.

[0022] Several water inlets are provided on the top of the cleaning cylinder, and nozzles are installed in the cleaning cylinder for spraying water. The number of nozzles is set according to the length of the cleaning cylinder so that the spray range of the nozzles can cover the entire screen. The plastic particles produced during the friction cleaning process are flushed by spraying, and dust and impurities are taken away. A water outlet is provided at the bottom of the cleaning cylinder, and sewage flows out of the outlet and is collected and treated.

[0023] Furthermore, a screen is provided inside the cleaning cylinder, and the screen surrounds the periphery of the feed blades and the friction cleaning blades.

[0024] A detachable screen is set inside the cleaning cylinder to increase the friction of the plastic when it is stirred. At the same time, it can effectively separate and filter plastic particles and sewage, thereby improving the cleaning effect.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The plastic particle cleaning device designed in this scheme cleans the plastic particles twice during their conveying process, ensuring that the cleaned plastic particles are relatively clean. The crushed plastic is put into the friction cleaning mechanism, and the plastic particles are cleaned once by the internal conveying friction stirring parts. The cleaned plastic particles are discharged from the discharge port of the friction cleaning mechanism. A cleaning chamber is installed at the discharge port. The plastic particles falling from the discharge port into the cleaning chamber are stirred and offset by the rotating stirring unit, and rub against each other to achieve the effect of friction cleaning; at the same time, the spray unit sprays the plastic particles in the cleaning chamber with high pressure; through the cooperation of the rotating stirring unit and the spray unit, the material falling into the cleaning chamber is cleaned again, making it cleaner. The cleaned plastic particles fall into the conveying component and are conveyed to the next process for processing. The above design can efficiently clean the dirt and impurities on the surface of the plastic particles, solving the problem of the existing friction cleaning machine not cleaning the plastic cleanly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of a plastic particle cleaning device according to an embodiment of the present invention.

[0028] Figure 2 This is a structural diagram of a friction cleaning mechanism according to an embodiment of the present invention.

[0029] Figure 3 This is a structural diagram of the second cleaning mechanism in one embodiment of the present utility model.

[0030] Illustration: 1. Friction cleaning mechanism; 2. Second cleaning mechanism; 11. Cleaning cylinder; 12. Cleaning conveying shaft; 13. Third driving member; 14. Screen; 111. Feed inlet; 112. Discharge outlet; 113. Water inlet; 114. Water outlet; 121. Feed blade; 122. Friction cleaning blade; 123. Discharge blade; 21. Cleaning assembly; 22. Conveying assembly; 211. Cleaning chamber; 212. Rotating stirring unit; 213. Spraying unit; 221. Conveying chamber; 222. Screw blade; 223. Second driving member; 2111. Cleaning pipeline; 2121. Rotating shaft; 2122. First driving member; 2123. Rotating blade; 2131. Cleaning nozzle; 2132. Cleaning shaft; 2133. Cleaning blade; 2134. Water inlet; 2135. Through hole; 2211. Screen opening; 2212. Conveying outlet. Detailed implementation mode

[0031] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0032] As Figures 1 to 3 shown, this embodiment provides a plastic particle cleaning device, including a friction cleaning mechanism 1 for primary cleaning of plastic particles. The friction cleaning mechanism 1 has a discharge outlet 112, and further includes a second cleaning mechanism 2 for secondary cleaning of plastic particles and connected to the discharge outlet. The second cleaning mechanism 2 includes a cleaning assembly 21 and a conveying assembly 22 located below the cleaning assembly 21. The cleaning assembly 21 includes a cleaning chamber 211, rotating stirring units 212 symmetrically arranged on both sides of the cleaning chamber 211, and a spraying unit 213 installed inside the cleaning chamber 211. The rotating stirring units 212 stir and impact the plastic particles falling from the discharge outlet 112 into the cleaning chamber 211, and the spraying unit 213 sprays water on the plastic particles dispersed in the cleaning chamber 211. The conveying assembly 22 conveys the cleaned plastic particles to the next process.

[0033] The plastic particle cleaning device provided in this embodiment cleans the plastic particles twice during their conveying process, ensuring that the cleaned plastic particles are relatively clean. The crushed plastic is put into the friction cleaning mechanism 1, and the plastic particles are cleaned once by the internal conveying friction stirring member. The cleaned plastic particles are discharged from the discharge port 112 of the friction cleaning mechanism 1. A cleaning chamber 211 is docked and installed at the discharge port 112. The plastic particles falling from the discharge port 112 into the cleaning chamber 211 are stirred and counteracted by the rotating stirring unit 212, and rubbed against each other to achieve the effect of friction cleaning; at the same time, the spray unit 213 sprays the plastic particles in the cleaning chamber 211 with high pressure; through the cooperation of the rotating stirring unit 212 and the spray unit 213, the material falling into the cleaning chamber 211 is cleaned again, making it cleaner. The cleaned plastic particles fall into the conveying component 22 and are conveyed to the next process for processing. The above design can efficiently clean the dirt and impurities on the surface of the plastic particles, solving the problem that the existing friction cleaning machine does not clean the plastic thoroughly.

[0034] like Figure 2 As shown, the friction cleaning mechanism 1 includes a cleaning cylinder 11, a cleaning conveying shaft 12 rotatably arranged in the cleaning cylinder 11, and a third driving member 13 that drives the cleaning conveying shaft 12 to rotate. The cleaning cylinder 11 is also provided with a feed port 111, and the feed port 111 and the discharge port 112 are respectively provided at both ends of the cleaning cylinder 11. The cleaning cylinder 11 is installed on the frame and can be placed horizontally or tilted. The two ends of the cleaning conveying shaft 12 are fixed to the two end covers of the cleaning cylinder 11 through sealed bearing seats. The third driving member 13 adopts a driving motor. The driving motor is arranged on a supporting platform on the cylinder body. Its rotating shaft is connected to the end of the cleaning conveying shaft 12 through a belt or chain. Driven by the third driving member 13, the cleaning conveying shaft 12 in the cleaning cylinder 11 rotates. After the crushed plastic particles are put into the cleaning cylinder 11 from the feed port 111, the cleaning conveying shaft 12 rotates to drive the plastic particles to move toward the discharge port 112, while stirring the plastic particles, so that the plastic particles, the plastic particles and the cleaning conveying shaft 12 and the cleaning cylinder 11 rub against each other, thereby achieving the cleaning effect.

[0035] like Figure 2As shown in the figure, at one end of the cleaning and conveying shaft 12 located at the feeding port 111, there is a feeding blade 121. At one end of the cleaning and conveying shaft 12 located at the discharging port 112, there is a discharging blade 123. On the part of the cleaning and conveying shaft 12 between the feeding port 111 and the discharging port 112, there are friction cleaning blades 122. The feeding blade 121 is a spiral blade. Facing the feeding port 111 directly, the plastic particles fed into the cleaning cylinder 11 are driven by the spiral blade and move towards the friction cleaning blades 122. The friction cleaning blades 122 are distributed at intervals in a spiral shape. The interval between two friction cleaning blades 122 forms a space for the plastic particles to turn over. The spiral design makes the plastic particles gradually pushed towards the discharging port 112 during the friction cleaning process and are swept out by the discharging blade 123.

[0036] As Figure 2 shown in the figure, the cleaning cylinder 11 is also provided with a plurality of water inlets 113 and water outlets 114. Inside the cleaning cylinder 11, there is a sieve 14, and the sieve 14 surrounds the periphery of the feeding blade 121 and the friction cleaning blades 122. A plurality of water inlets 113 are arranged at the top of the cleaning cylinder 11. Sprayers are installed in the cleaning cylinder 11 to spray water. The number of sprayers is set according to the length of the cleaning cylinder 11 so that the spraying range of the sprayers can cover the entire sieve 14. The plastic particles during the friction cleaning process are rinsed by spraying and the dust and impurities are carried away; at the bottom of the cleaning cylinder 11, there is a water outlet 114, and the sewage flows out from the water outlet 114 and is collected and treated. A separable and detachable sieve 14 is arranged inside the cleaning cylinder 11, which increases the friction force of the plastic during agitation and can effectively separate and filter the plastic particles and sewage, improving the cleaning effect.

[0037] As Figure 3 shown in the figure, the rotary agitation unit 212 includes a rotating shaft 2121 rotatably arranged in the cleaning chamber 211 and a first driving member 2122 for driving the rotating shaft 2121 to rotate. A rotating blade 2123 is arranged on the outer periphery of the rotating shaft 2121. Two rotary agitation units 212 are symmetrically arranged on the side walls on both sides of the cleaning chamber 211. The first driving member 2122 uses a driving motor. The rotating shaft 2121 is installed on the side wall of the cleaning chamber 211 through a sealed bearing seat. The rotating shaft of the driving motor is connected to the rotating shaft 2121 through a coupling. The rotating directions of the rotating shafts of the driving motors are set to be opposite. Therefore, the rotating directions of the two rotating shafts 2121 are opposite. The rotating blades 2123 rotate at a high speed under the drive of the first driving member 2122, forming a turbulent flow in the cleaning chamber 211. When the plastic particles fall into the cleaning chamber 211, the plastic particles are stirred and counteracted in the cleaning chamber 211 under the action of the turbulent flow and then rub against each other to achieve the purpose of cleaning.

[0038] As Figure 3As shown in the figure, the spraying unit 213 includes a plurality of cleaning nozzles 2131 arranged inside the cleaning chamber 211. The cleaning chamber 211 is provided with a plurality of cleaning pipelines 2111, and the cleaning nozzles 2131 are connected to the cleaning pipelines 2111 in a one-to-one correspondence. The cleaning nozzles 2131 can be arranged on the four side walls of the cleaning chamber 211, and the number of cleaning nozzles 2131 on each side wall is set according to the size of the cleaning chamber 211, so that the spraying range of the cleaning nozzles 2131 can cover the entire cleaning chamber 211. The cleaning nozzles 2131 are high-pressure nozzles, which spray the plastic particles in the cleaning chamber 211, so that the dirt and impurities are further washed away during the stirring and mutual friction of the plastic particles. The spraying unit 213 further includes a cleaning shaft 2132 arranged in the cleaning chamber 211 and below the rotating shaft 2121. The outer periphery of the cleaning shaft 2132 is provided with cleaning blades 2133. The end of the cleaning shaft 2132 is provided with a water inlet 2134. An inlet channel communicating with the water inlet 2134 is arranged in the cleaning shaft 2132. A plurality of through holes 2135 communicating with the inlet channel are arranged at intervals on the outer wall of the cleaning blade 2133. The cleaning shaft 2132 is of a hollow design, and its end is connected to a water inlet pipe. The outer periphery of the cleaning shaft 2132 is provided with cleaning blades 2133. The cleaning blades 2133 can be arranged in a cross pattern or in parallel. A plurality of through holes 2135 are dispersed on each cleaning blade 2133 for atomizing water spraying. Therefore, a water curtain is formed at the position of the cleaning shaft 2132 in the cleaning chamber 211, and the plastic particles are washed again when they fall through the water curtain.

[0039] As Figure 3 shown in the figure, the conveying assembly 22 includes a conveying chamber 221 communicating with the cleaning chamber 211, a spiral blade 222 rotatably arranged in the conveying chamber 221, and a second driving member 223 for driving the spiral blade 222 to rotate. The second driving member 223 is a driving motor. A screen opening 2211 is formed at the bottom of the conveying chamber 221, and a conveying outlet 2212 is arranged at one end opposite to the installation position of the second driving member 223. The conveying outlet 2212 is directly opposite to the material inlet of the next process. The sewage for cleaning the plastic particles by the cleaning assembly 21 falls into the conveying chamber 221 and flows out from the screen opening 2211. The conveying assembly 22 adopts a spiral conveying form. The plastic particles cleaned by the cleaning assembly 21 fall into the conveying chamber 221. A spiral blade 222 is arranged in the conveying chamber 221. Driven by the second driving member 223, the spiral blade 222 rotates and conveys the plastic particles to the conveying outlet 2212, and the plastic particles fall into the material inlet of the next process.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0041] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0042] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic particle cleaning device, comprising a friction cleaning mechanism for primary cleaning of plastic particles, the friction cleaning mechanism having a discharge port, characterized in that, It further includes a second cleaning mechanism for secondary cleaning of plastic particles and connected to the discharge port. The second cleaning mechanism includes a cleaning component and a conveying component located below the cleaning component. The cleaning component includes a cleaning chamber, rotary stirring units symmetrically arranged on both sides of the cleaning chamber, and a spraying unit installed inside the cleaning chamber. The rotary stirring units stir and counter-flush the plastic particles falling from the discharge port into the cleaning chamber, and the spraying unit sprays water on the plastic particles dispersed in the cleaning chamber. The conveying component conveys the cleaned plastic particles to the next process.

2. The plastic particle cleaning device according to claim 1, characterized in that, The rotary stirring unit includes a rotating shaft rotatably arranged in the cleaning chamber and a first driving member for driving the rotation of the rotating shaft. The outer periphery of the rotating shaft is provided with rotating blades.

3. The plastic particle cleaning device according to claim 2, characterized in that, The spraying unit includes a plurality of cleaning nozzles arranged inside the cleaning chamber. The cleaning chamber is provided with a plurality of cleaning pipelines, and the cleaning nozzles are respectively connected to the cleaning pipelines in one-to-one correspondence.

4. The plastic particle cleaning device according to claim 3, wherein, The spraying unit further includes a cleaning shaft arranged in the cleaning chamber and located below the rotating shaft. The outer periphery of the cleaning shaft is provided with cleaning blades. The end of the cleaning shaft is provided with a water inlet, and a water inlet channel communicating with the water inlet is arranged inside the cleaning shaft. A plurality of through holes communicating with the water inlet channel are arranged at intervals on the outer wall of the cleaning blades.

5. The plastic particle cleaning device according to claim 1, wherein, The conveying component includes a conveying chamber communicating with the cleaning chamber, a spiral blade rotatably arranged in the conveying chamber, and a second driving member for driving the rotation of the spiral blade.

6. The plastic particle cleaning device according to claim 5, wherein, The bottom of the conveying chamber is provided with a screen opening and a conveying outlet.

7. The plastic particle cleaning device according to claim 1, wherein The friction cleaning mechanism includes a cleaning cylinder, a cleaning conveying shaft rotatably arranged in the cleaning cylinder, and a third driving member for driving the rotation of the cleaning conveying shaft. The cleaning cylinder is further provided with a feeding port, and the feeding port and the discharge port are respectively arranged at both ends of the cleaning cylinder.

8. The plastic particle cleaning device according to claim 7, characterized in that, One end of the cleaning conveying shaft located at the feeding port is provided with feeding blades, one end of the cleaning conveying shaft located at the discharge port is provided with discharge blades, and a part of the cleaning conveying shaft located between the feeding port and the discharge port is provided with friction cleaning blades.

9. The plastic particle cleaning device according to claim 8, wherein, The cleaning cylinder is further provided with a plurality of water inlets and water outlets.

10. The plastic particle cleaning device according to claim 9, wherein A screen is arranged inside the cleaning cylinder, and the screen surrounds the feeding blades and the friction cleaning blades on the periphery.

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