Odor treatment device for recycled plastic

Abstract

The utility model relates to the technical field of recycled plastic treatment, and discloses a recycled plastic smell treatment device which comprises a cooking assembly, a dehydrator and a baking assembly. The cooking assembly comprises a first tank body, a heat preservation jacket and a heating piece located between the heat preservation jacket and the first tank body; a first feeding hole, a liquid inlet and a first discharging hole are respectively formed in the first tank body; the feeding end of the dehydrator is connected with a discharging pipeline, and the other end of the discharging pipeline is connected with the first discharging opening; the baking assembly comprises a second tank body and a baking heater, a second feeding port and a second discharging port are formed in the second tank body, and the baking heater communicates with the interior of the second tank body through an air inlet pipeline and is used for introducing hot air into the second tank body. According to the treatment device, the mode that cooking extraction and hot air are used for conducting double deodorization on plastic is ingeniously utilized, deodorization is more sufficient and thorough, the better deodorization effect is achieved, continuous deodorization can be achieved, and the deodorization efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of regenerative plastics processing, particularly to a regenerative plastics smell processing device. BACKGROUND

[0002] Plastic products have been widely used in agriculture, industry, transportation, packaging, construction, medical supplies, national defense cutting-edge industry and people's daily life and other fields, but the plastic products used after the life cycle will be discarded, and the discarded plastics are difficult to be degraded in the natural environment, which will damage the natural ecological environment. Therefore, recycling and reusing plastic products can achieve the purpose of protecting the environment, saving resources and reducing carbon emissions. However, the recycled waste plastics often carry a strong odor, and if directly discharged into the air, it will cause environmental pollution, and even harm human health. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a regenerative plastics smell processing device.

[0004] The application embodiment provides a regenerative plastics smell processing device, which comprises:

[0005] The cooking assembly comprises a first tank body, a heat preservation jacket surrounding the outer peripheral wall of the first tank body, and a heating element located between the heat preservation jacket and the first tank body, and the first tank body is respectively provided with a first feeding port, a liquid inlet and a first discharging port which are in communication with the inside of the first tank body;

[0006] The dehydrator is connected with a discharging pipeline at the feeding end, and the other end of the discharging pipeline is connected with the first discharging port;

[0007] The baking assembly comprises a second tank body and a baking heater, the second tank body is provided with a second feeding port and a second discharging port which are in communication with the inside of the second tank body, and the baking heater is in communication with the inside of the second tank body through an air inlet pipeline, and is used for introducing hot air into the second tank body to bake the plastic located in the second tank body.

[0008] In one embodiment, the first feeding assembly comprises a first feeding device, a first feeding box and a first feeding pipeline, one end of the first feeding pipeline is connected with the discharging end of the first feeding box, the other end is connected with the first feeding device, the first feeding device is arranged in the first feeding port, and the first feeding device is arranged in the first feeding port.

[0009] In an embodiment, a second suction component is further included, which comprises a second suction device, a second feeding tank and a second feeding pipeline. The second feeding tank is arranged below the discharge port of the dewatering machine to receive the plastic discharged from the dewatering machine. One end of the second feeding pipeline is connected to the discharge end of the second feeding tank, and the other end is connected to the second suction device. The second suction device is arranged at the second feeding port to provide suction force required for sucking the plastic into the second tank body.

[0010] In an embodiment, the top of the first feeding tank is provided with a first feeding port, and a first cover plate is arranged at the first feeding port in an openable and closable manner. The upper part of the first feeding tank is provided with a first filter screen.

[0011] The top of the second feeding tank is provided with a second feeding port, and a second cover plate is arranged at the second feeding port in an openable and closable manner. The upper part of the second feeding tank is provided with a second filter screen.

[0012] In an embodiment, the first feeding tank and the second feeding tank are both connected with a moving frame, and the lower end of the moving frame is connected with a moving wheel.

[0013] In an embodiment, a pressing component is further included, which comprises a power member and a pressing plate. The power member is installed at the top of the first tank body, and the output shaft of the power member penetrates through the top of the first tank body and is connected with the pressing plate. The pressing plate is arranged inside the first tank body to press the plastic floating on the liquid.

[0014] In an embodiment, a heat exchange component is further included, which comprises a heat exchanger, a first conveying pipeline, a second conveying pipeline, a discharge pipeline and a backflow pipeline. One end of the first conveying pipeline is connected to the first port of the heat exchanger, and the other end is connected to an external water source. One end of the second conveying pipeline is connected to the second port of the heat exchanger, and the other end is connected to the liquid inlet. One end of the backflow pipeline is connected to the drain port of the dewatering machine, and the other end is connected to the third port of the heat exchanger. One end of the discharge pipeline is connected to the fourth port of the heat exchanger to discharge the liquid after heat exchange.

[0015] In an embodiment, a first power pump is arranged on the first conveying pipeline to provide power required for conveying the liquid by the first conveying pipeline. A second power pump is arranged on the backflow pipeline to provide power required for conveying the liquid by the backflow pipeline.

[0016] In an embodiment, the device further comprises a water storage tank, a water inlet of the water storage tank being connected to the second port of the heat exchanger, and a water outlet of the water storage tank being connected to an end of the second conveying pipeline away from the first tank.

[0017] In an embodiment, the device further comprises a stirring assembly, the stirring assembly comprising a driving member and a stirring member arranged in the second tank, the driving member being mounted on the second tank and configured to drive the stirring member to rotate so as to stir the plastic in the second tank.

[0018] Compared with the prior art, the above technical solution provided by the embodiments of the present application has the following beneficial effects:

[0019] The plastic to be treated is introduced into the first tank through the first feeding port, and at the same time, the liquid is introduced into the first tank through the liquid inlet. Then, the heating member is used to conduct heat to the first tank, so as to heat the plastic and the liquid introduced into the first tank. Thus, the odor substances in the plastic to be treated are extracted under the effect of the high-temperature liquid. Then, the mixture in the first tank is introduced into the dewatering machine through the discharge pipeline for dewatering treatment, so that the water on the surface of the plastic is removed. Finally, the dewatered plastic is introduced into the second tank, and the baking heater is used to introduce hot air into the second tank through the air inlet pipeline, so that the plastic in the second tank is baked under the action of the hot air, thereby removing the remaining water and residual odor substances in the plastic. Thus, the odor of the plastic is fully removed, and the odor grade of the plastic is reduced. That is, the processing device ingeniously uses the double deodorization method of cooking extraction and hot air to deodorize the plastic, which is more thorough and has better deodorization effect, and can realize continuous deodorization, thereby improving the deodorization efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of an embodiment of a plastic odor treatment device according to the present application;

[0021] Figure 2 is a structural schematic diagram of a first feeding tank in a plastic odor treatment device according to the present application;

[0022] Figure 3 is a structural schematic diagram of a second feeding tank in a plastic odor treatment device according to the present application;

[0023] Figure 4 is a structural schematic diagram of another embodiment of a plastic odor treatment device according to the present application.

[0024] Reference numerals in the drawings:

[0025] 10, cooking assembly; 11, first tank; 11a, exhaust port; 11b, first discharge port; 12, heat preservation jacket; 20, dewatering machine; 30, discharge pipeline; 40, control valve; 50, baking assembly; 51, second tank; 51a, second feeding port; 51b, second discharge port; 51c, exhaust pipeline; 52, baking heater; 53, air inlet pipeline; 60, first suction assembly; 61, first feeding box; 61a, first feeding port; 62, first suction member; 63, first feeding pipeline; 70, second suction assembly; 71, second feeding box; 71a, second feeding port; 72, second suction member; 73, second feeding pipeline; 80, heat exchange assembly; 81, first conveying pipeline; 82, second conveying pipeline; 83, return pipeline; 84, discharge pipeline; 85, heat exchanger; 86, second power pump; 87, first power pump; 90, power member; 100, driving member; 110, first filter screen; 111, moving frame; 112, moving wheel; 113, second filter screen; 120, water storage box. DETAILED DESCRIPTION

[0026] In order to make the technical features, objectives and effects of the present application more clearly understood, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and therefore cannot be understood as indicating that the devices or elements referred to must have a particular direction, thus cannot be understood as limiting the present application.

[0027] The specific embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0028] As shown in the drawings, Figure 1 The present application provides a kind of smell processing device of regenerated plastics, and the processing device includes cooking assembly 10, dewatering machine 20 and baking assembly 50.

[0029] Specifically, the cooking assembly 10 comprises a first tank body 11, a heat preservation jacket 12 surrounding the outer peripheral wall of the first tank body 11, and a heating element between the heat preservation jacket 12 and the first tank body 11. The first tank body 11 is respectively provided with a first feeding port, a liquid inlet port and a first discharging port 11b which are in communication with the interior of the first tank body 11. The dehydration machine 20 is connected with a discharging pipeline 30 at a feeding end, the other end of the discharging pipeline 30 is connected with the first discharging port 11b, and the discharging pipeline 30 is further provided with a control valve 40 for controlling the opening and closing of the discharging pipeline 30. The baking assembly 50 comprises a second tank body 51 and a baking heater 52. The second tank body 51 is provided with a second feeding port 51a and a second discharging port 51b which are in communication with the interior of the second tank body 51. The outer side wall of the second tank body 51 is further connected with an exhaust pipeline 51c for exhausting the gas in the interior of the second tank body 51. The baking heater 52 is connected with the interior of the second tank body 51 through an air inlet pipeline 53 for introducing hot air into the second tank body 51 to bake the plastic located in the second tank body 51.

[0030] In order to facilitate the introduction or flow of the plastic, in the embodiment, the first discharging port 11b is arranged at the bottom of the first tank body 11, the second feeding port 51a is arranged at the top of the second tank body 51, and the second discharging port 51b is arranged at the bottom of the second tank body 51. In this way, it is more convenient to introduce the plastic into the first tank body 11 and the second tank body 51, and it is also convenient for the plastic to flow out of the first tank body 11 and the second tank body 51.

[0031] Exemplarily, the heating element is used to conduct heat to the first tank body 11 to heat the plastic and the liquid (specifically, pure water) introduced into the first tank body 11, so that the plastic to be treated extracts the odor substances in the plastic under the cooking and extraction of the high-temperature liquid. In actual application, the heating element can adopt an electromagnetic heating wire, or other components capable of heating in the prior art, which is not limited.

[0032] In addition, the heat preservation jacket 12 arranged on the outer peripheral wall of the first tank body 11 can effectively reduce heat loss, ensure that the plastic and the liquid in the interior of the first tank body 11 can be quickly heated to the required temperature, shorten the heating time, and be beneficial to improve the processing efficiency.

[0033] Exemplarily, the plastic to be treated enters the interior of the first tank body 11 from the first feeding port, while liquid is introduced into the interior of the first tank body 11 from the liquid inlet, so that the plastic in the interior of the first tank body 11 is immersed in the liquid, and then the plastic and the liquid in the interior of the first tank body 11 are heated by the heat generated by the heating member, so that the odor substances in the plastic are extracted under the action of high-temperature cooking, and the plastic is subjected to primary treatment. In addition, a large amount of steam is generated during the heating of the liquid in the interior of the first tank body 11, and if the generated steam is not discharged in time, safety problems are likely to occur. Therefore, in the present embodiment, the top of the first tank body 11 is also provided with an exhaust port 11a in communication with the interior of the first tank body 11, so that the steam generated in the interior of the first tank body 11 is discharged from the exhaust port 11a.

[0034] Exemplarily, the dehydrator 20 is used for dehydrating the cooked plastic, so as to be subsequently introduced into the second tank body 51 for baking treatment. For this purpose, the dehydrator 20 can adopt a machine commonly used for dehydration in the prior art, and no further description is given herein.

[0035] Exemplarily, the plastic dehydrated by the dehydrator 20 is introduced into the interior of the second tank body 51 from the second feeding port 51a, and then hot air is introduced into the second tank body 51 from the air inlet pipeline 53 by the baking heater 52, so that the plastic in the second tank body 51 is baked under the action of the hot air, and the remaining moisture and odor substances in the plastic are removed, so as to achieve the purpose of fully removing odor.

[0036] Based on the above technical features, the odor treatment device for regenerated plastic introduces the plastic to be treated into the interior of the first tank body 11 from the first feeding port, and simultaneously introduces liquid into the interior of the first tank body 11 from the liquid inlet, and then conducts heat to the first tank body 11 by the heating member to heat the plastic and the liquid introduced into the first tank body 11, so that the odor substances in the plastic to be treated are extracted under the action of high-temperature liquid cooking, and then the mixture in the first tank body 11 is introduced into the dehydrator 20 through the discharge pipeline 30 for dehydration treatment, so that the moisture on the surface of the plastic is removed, and finally the dehydrated plastic is introduced into the second tank body 51, and hot air is introduced into the second tank body 51 from the air inlet pipeline 53 by the baking heater 52, so that the plastic in the second tank body 51 is baked under the action of the hot air, and the remaining moisture and odor substances in the plastic are removed, so as to achieve the purpose of fully removing odor of the plastic and reducing the odor grade of the plastic. That is to say, the treatment device ingeniously uses the double odor removal methods of cooking extraction and hot air to remove odor more fully and completely, has better odor removal effect, and can realize continuous odor removal, which is beneficial to improving the odor removal efficiency.

[0037] In an embodiment, the first suction component 60 includes a first suction device, a first feeding tank 61 and a first feeding pipe 63. One end of the first feeding pipe 63 is connected to the outlet of the first feeding tank 61, and the other end is connected to the first suction device. The first suction device is arranged at the first feeding inlet and is configured to provide suction force required for sucking the plastic, so as to suck the plastic in the first feeding tank 61 into the first tank body 11. That is, the plastic to be processed is put into the first feeding tank 61, and then the plastic in the first feeding tank 61 is sucked into the first tank body 11 through the first feeding pipe 63 under the action of the suction force provided by the first suction device, so as to complete automatic feeding without manual feeding, which is beneficial to reduce labor intensity. It should be noted that the plastic to be processed in the embodiment is plastic particles formed by mechanically crushing plastic products, so that the plastic particles can be sucked into the first tank body 11 under the action of the suction force provided by the first suction device. In addition, the first suction device can be a negative pressure suction device, or can be a suction component capable of sucking the plastic in the first feeding tank 61 into the first tank body 11 in the prior art, and the present application is not limited in this regard.

[0038] In an embodiment, the second suction component 70 includes a second suction device, a second feeding tank 71 and a second feeding pipe 73. The second feeding tank 71 is arranged below the outlet of the dewatering machine 20 and is configured to receive the plastic discharged from the dewatering machine 20. One end of the second feeding pipe 73 is connected to the outlet of the second feeding tank 71, and the other end is connected to the second suction device. The second suction device is arranged at the second feeding inlet 51a and is configured to provide suction force required for sucking the plastic, so as to suck the plastic in the second feeding tank 71 into the second tank body 51.

[0039] That is, after the plastic entering the dewatering machine 20 is dewatered, the plastic is discharged from the outlet of the dewatering machine 20 and falls into the second feeding tank 71, and then the plastic in the second feeding tank 71 is sucked into the second tank body 51 through the second feeding pipe 73 under the action of the suction force provided by the second suction device, so as to realize automatic feeding of the plastic without manual feeding, which is beneficial to reduce labor intensity and improve processing efficiency. In addition, it should be noted that the second suction device can be a negative pressure suction device, or can be a suction component capable of sucking the plastic in the second feeding tank 71 into the second tank body 51 in the prior art, and the present application is not limited in this regard.

[0040] Please refer to Figure 2 and Figure 3In an embodiment, the first feeding box 61 is provided with a first feeding opening 61a on the top, and a first cover plate is movably arranged on the first feeding opening 61a, and a first filter screen 110 is arranged on the upper portion of the first feeding box 61; and / or the second feeding box 71 is provided with a second feeding opening 71a on the top, and a second cover plate is movably arranged on the second feeding opening 71a, and a second filter screen 113 is arranged on the upper portion of the second feeding box 71.

[0041] The term "and / or" is used herein to associate together two or more objects, and can mean that any of the three conditions exist, for example, A and / or B can mean that A exists alone, A and B exist together, or B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects. Specifically, in the present embodiment, the first feeding opening 61a is arranged on the top of the first feeding box 61, so that the plastic to be processed can be fed from the first feeding opening 61a and fall into the first feeding box 61 through the first filter screen 110, so as to be subsequently sucked into the first tank body 11. When the first feeding box 61 is filled with plastic, the first cover plate can be used to cover the feeding opening to prevent foreign matter from entering the first feeding box 61 from the first feeding opening 61a. Similarly, the feeding process of the second feeding box 71 can refer to the feeding process of the first feeding box 61, and will not be described here.

[0042] In an embodiment, the first feeding box 61 and the second feeding box 71 are both connected with a moving frame 111, and the lower end of the moving frame 111 is connected with a moving wheel 112. In this way, the first feeding box 61 and the second feeding box 71 can be moved at will by sliding the moving wheel 112, so as to realize the transfer of the plastic to be processed.

[0043] Since the liquid required for cooking and extraction is introduced into the first tank body 11, part of the plastic may float on the liquid, thereby causing the plastic not to be fully cooked. To this end, in an embodiment, a pressing assembly is further included, which comprises a power member 90 and a pressing plate. The power member 90 is installed on the top of the first tank body 11, and the output shaft of the power member 90 penetrates the top of the first tank body 11 and is connected with the pressing plate. The pressing plate is arranged in the first tank body 11 and is used to extrude the plastic floating on the liquid.

[0044] That is, when the cooking is started, the power element 90 drives the pressing plate to move towards the bottom of the tank, and a plurality of perforations are formed on the pressing plate, so that when the pressing plate is pressed into the liquid, only the liquid passes through the perforations, and the plastic floating on the liquid cannot pass through the perforations and is pressed into the liquid, thereby ensuring that the plastic can be fully cooked and the odor substances in the plastic can be more thoroughly extracted. In addition, it should be noted that the power element 90 can be a hydraulic cylinder, and the specific connection between the piston rod of the hydraulic cylinder and the pressing plate can refer to the prior art, and will not be described here.

[0045] In an embodiment, a heat exchange assembly 80 is further included, which comprises a heat exchanger 85, a first conveying pipeline 81, a second conveying pipeline 82, a discharge pipeline 84, and a return pipeline 83. One end of the first conveying pipeline 81 is connected to a first port of the heat exchanger 85, and the other end is connected to an external water source. One end of the second conveying pipeline 82 is connected to a second port of the heat exchanger 85, and the other end is connected to the liquid inlet. One end of the return pipeline 83 is connected to a water outlet of the dewatering machine 20, and the other end is connected to a third port of the heat exchanger 85. One end of the discharge pipeline 84 is connected to a fourth port of the heat exchanger 85, for discharging the liquid after heat exchange.

[0046] For example, after the plastic is cooked, the plastic and the liquid in the first tank body 11 are discharged into the dewatering machine 20 for dewatering, and the liquid discharged from the dewatering machine 20 flows into the heat exchanger 85 through the return pipeline 83, and the external water source flows into the heat exchanger 85 through the first conveying pipeline 81. At this time, since the liquid from the dewatering machine 20 into the heat exchanger 85 still has a high temperature, it exchanges heat with the external water source flowing into the heat exchanger 85, so that the temperature of the external water source is heated to a certain temperature value, and then the liquid is introduced into the first tank body 11 through the second conveying pipeline 82, thereby ingeniously using the heat exchanger 85 to recover the waste heat of the liquid in the first tank body 11 to heat the liquid introduced into the first tank body 11, achieving the recycling of heat. It should be noted that the external water source and the liquid discharged from the dewatering machine 20 only exchange heat in the heat exchanger 85 and do not mix. The specific heat exchange can refer to the working principle of the existing heat exchanger 85, and will not be described here.

[0047] In an embodiment, a first power pump 87 is arranged on the first conveying pipeline 81, which is used to provide the power required by the first conveying pipeline 81 to convey the liquid. A second power pump 86 is arranged on the return pipeline 83, which is used to provide the power required by the return pipeline 83 to convey the liquid.

[0048] Please refer to Figure 4In an embodiment, the water storage tank 120 is further provided, the water inlet of the water storage tank 120 is connected with the second port of the heat exchanger 85, and the water outlet of the water storage tank 120 is connected with the end of the second conveying pipeline 82 away from the first tank body 11. That is, the external water source is preheated to a certain temperature by the heat exchanger, then enters the water storage tank for temporary storage, and then is input into the first tank body, so that the temperature of the liquid input into the first tank body 11 can be further improved, thereby reducing the subsequent heating time and improving the processing efficiency.

[0049] In the process of inputting the hot gas into the second tank body 51 by the baking heater 52, the plastic entering the second tank body 51 may be stacked, and the problem of uneven heating may occur. In this regard, in an embodiment, a stirring assembly is further provided, which includes a driving member 100 and a stirring member arranged in the second tank body 51. The driving member 100 is installed on the second tank body 51 and is used to drive the stirring member to rotate to stir the plastic in the second tank body 51. That is, when the plastic in the second tank body 51 is baked, the stirring member is driven to rotate by the driving member 100, so that the material in the second tank body 51 can be stirred, the internal material is uniformly mixed, and the problem of local uneven heating is prevented.

[0050] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A device for odor treatment of recycled plastic, characterized by, The utility model relates to a kind of plastic recycling machine, including: A cooking assembly includes a first tank, a heat jacket surrounding the outer wall of the first tank, and a heating element between the heat jacket and the first tank, the first tank is respectively provided with a first feed inlet, a liquid inlet and a first discharge outlet in communication with its interior; A dewatering machine has a discharge pipeline connected to its feed end, and the other end of the discharge pipeline is connected to the first discharge outlet; A baking assembly includes a second tank and a baking heater, the second tank is provided with a second feed inlet and a second discharge outlet in communication with its interior, and the baking heater is connected to the interior of the second tank through an air inlet pipeline to introduce hot air into the second tank to bake the plastic in the second tank.

2. The apparatus for odor treatment of recycled plastic according to claim 1, characterized in that, It also includes a first suction assembly, which includes a first suction device, a first feeding box and a first feeding pipeline, one end of the first feeding pipeline is connected to the discharge end of the first feeding box, and the other end is connected to the first suction device, the first suction device is arranged in the first feed inlet to provide the suction force required for sucking plastic to suck the plastic in the first feeding box into the interior of the first tank.

3. The apparatus for odor treatment of recycled plastic according to claim 2, characterized in that, It also includes a second suction assembly, which includes a second suction device, a second feeding box and a second feeding pipeline, the second feeding box is arranged below the discharge outlet of the dewatering machine to receive the plastic discharged from the dewatering machine, one end of the second feeding pipeline is connected to the discharge end of the second feeding box, and the other end is connected to the second suction device, the second suction device is arranged in the second feed inlet to provide the suction force required for sucking plastic to suck the plastic in the second feeding box into the interior of the second tank.

4. The apparatus for odor treatment of recycled plastic according to claim 3, characterized in that, The top of the first feeding box is provided with a first feeding port, and a first cover plate is movably arranged at the first feeding port, and a first filter screen is arranged in the upper part of the first feeding box. The top of the second feeding box is provided with a second feeding port, and a second cover plate is movably arranged at the second feeding port, and a second filter screen is arranged in the upper part of the second feeding box.

5. The apparatus for odor treatment of recycled plastic according to claim 3, wherein The first feeding box and the second feeding box are both connected to a moving frame, and the lower end of the moving frame is connected to a moving wheel.

6. The apparatus for odor treatment of recycled plastic according to claim 1, wherein It also includes a pressing assembly, which includes a power element and a pressing plate, the power element is installed on the top of the first tank, and the output shaft of the power element penetrates the top of the first tank and is connected to the pressing plate, the pressing plate is arranged in the interior of the first tank to extrude the plastic floating on the liquid.

7. The apparatus for odor treatment of recycled plastic according to claim 1, wherein It also includes a heat exchange assembly, which includes a heat exchanger, a first conveying pipeline, a second conveying pipeline, a discharge pipeline and a backflow pipeline, one end of the first conveying pipeline is connected to the first port of the heat exchanger, and the other end is connected to an external water source, one end of the second conveying pipeline is connected to the second port of the heat exchanger, and the other end is connected to the liquid inlet, one end of the backflow pipeline is connected to the drain outlet of the dewatering machine, and the other end is connected to the third port of the heat exchanger, one end of the discharge pipeline is connected to the fourth port of the heat exchanger to discharge the liquid after heat exchange.

8. The apparatus for odor treatment of recycled plastic according to claim 7, characterized in that, The first conveying pipeline is provided with a first power pump for providing power required by the first conveying pipeline for conveying liquid.

9. The apparatus for odor treatment of recycled plastic according to claim 7, wherein The water inlet of a water storage tank is connected with the second port of the heat exchanger, and the water outlet of the water storage tank is connected with the second conveying pipeline away from the first tank body.

10. The apparatus for odor treatment of recycled plastic according to claim 1, wherein The stirring assembly comprises a driving member and a stirring member arranged in the second tank body. The driving member is installed on the second tank body and used to drive the stirring member to rotate so as to stir the plastic in the second tank body.

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