Recycled plastic low-temperature drying device
By incorporating a molecular sieve filter element and a quick-release structure into the low-temperature drying device for recycled plastics, the problem of reduced drying efficiency under high humidity was solved, achieving efficient drying and convenient maintenance, and improving the drying quality of recycled plastics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-07
AI Technical Summary
Existing low-temperature drying equipment experiences a significant decrease in drying efficiency in high-humidity environments, which affects the drying effect on recycled plastics.
It adopts components such as an air inlet pipe, a fixed shell, a molecular sieve filter element, a connecting pipe, and a collection hopper. The molecular sieve filter element filters moisture in the air, improving air dryness, and the quick-release structure facilitates the replacement and maintenance of the molecular sieve filter element.
It improves the blowing efficiency of the cold air drying device, ensuring that it can maintain a high-efficiency drying effect even in high humidity environments, and facilitates the replacement and maintenance of the molecular sieve filter element to maintain optimal performance.
Smart Images
Figure CN224089396U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of recycled plastics technology, specifically a low-temperature drying device for recycled plastics. Background Technology
[0002] After being produced, recycled plastics often contain a small amount of residual moisture. If this moisture is not removed, it will affect subsequent plastic processing and have a significant impact on the quality of the final plastic product. Plastic raw materials often need to undergo dehydration treatment after production. This is generally achieved by using a cold air drying device to blow low-temperature dry air onto the recycled plastic, so that the moisture on the surface of the plastic is carried away during the airflow, thus achieving the purpose of drying. The fan of the cold air drying device provides the power for airflow, and the air cooler cools the air to the required low temperature. The drying chamber is the area where the recycled plastic is dried. A conveyor device can be installed inside to allow the plastic to move evenly within the drying chamber and fully contact the cold air.
[0003] Existing low-temperature drying equipment is greatly affected by air humidity when drying recycled plastics. In high humidity environments, the drying efficiency will be significantly reduced, thus affecting the drying efficiency. Therefore, a low-temperature drying equipment for recycled plastics is proposed to address the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a low-temperature drying device for recycled plastics to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A low-temperature drying device for recycled plastics includes a cold air drying device and an air inlet pipe. The air inlet pipe is fixedly connected to the rear side of the cold air drying device. A fixed shell is fixedly connected to the end of the air inlet pipe away from the cold air drying device. A fixing groove is formed at the top of the fixed shell. A rubber layer is fixedly connected inside the fixing groove. A fixing frame is provided on the inner side of the fixing groove, located above the rubber layer. A first limiting frame is fixedly connected to the inner side of the fixing frame. A molecular sieve filter element is located to the left of the first limiting frame on the inner side of the fixing frame. A second limiting frame is located to the left of the molecular sieve filter element on the inner side of the fixing frame. A fixing rod that penetrates the molecular sieve filter element and is located inside the first limiting frame is fixedly connected to the right side of the second limiting frame. A handle is fixedly connected to the top of the fixing frame. Fixing frames that are symmetrically arranged are fixedly connected to both sides of the fixing shell. A spring is fixedly connected to the end of the fixing frame away from the fixing shell. A fixing pin that penetrates the fixing frame and the fixing shell and is located inside the fixing frame is fixedly connected to the end of the spring away from the fixing shell. A connecting pipe is fixedly connected to the end of the fixing shell away from the air inlet pipe. A collection hopper is fixedly connected to the end of the connecting pipe away from the fixing shell. A support leg is fixedly connected to the bottom of the fixing shell.
[0007] Preferably, the fixing groove, fixing frame, first limiting frame, molecular sieve filter element, second limiting frame and rubber layer are a group, and there are four groups in total. The fixing groove, fixing frame, first limiting frame, molecular sieve filter element, second limiting frame and rubber layer are arranged in a spaced manner inside the fixing shell.
[0008] Preferably, the fixing frame, spring and fixing pin are grouped together, with a total of eight groups. The fixing frame, spring and fixing pin are symmetrically arranged on both sides of the fixing shell, and the number and position of each pair of symmetrically arranged fixing frames, springs and fixing pins correspond one-to-one with the fixing groove.
[0009] Preferably, there are sixteen fixing rods, with four fixing rods forming a group, and each group of fixing rods is arranged symmetrically on the right side of the second limiting frame.
[0010] Preferably, there are four support legs, which are arranged symmetrically at the bottom of the fixed shell.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. In this utility model, the air inlet pipe, fixed shell, molecular sieve filter element, connecting pipe and collection hopper are set up. The collection hopper can guide the external air into the connecting pipe, improve the air intake speed of the connecting pipe, and improve the blowing efficiency of the cold air drying device. The multiple molecular sieve filter elements use their characteristics to filter the incoming airflow and adsorb the moisture in the air, so that the air is kept dry. This solves the problem that the drying effect of the existing low temperature drying device is greatly affected by the air humidity when drying recycled plastics. In the case of high humidity environment, the drying efficiency will be significantly reduced, which affects the drying efficiency.
[0013] 2. In this utility model, the fixed frame, fixed groove, first limiting frame, molecular sieve filter element, second limiting frame, fixed rod, fixed bracket, spring and fixed pin are provided. The fixed frame can be quickly removed by the fixed bracket, spring and fixed pin, which makes it easy to take out the fixed frame. By removing the second limiting frame and fixed rod, the molecular sieve filter element can be taken out for replacement, so that the performance of the molecular sieve filter element is kept in the best condition. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the rear view structure of this utility model;
[0016] Figure 3 This is a detailed structural diagram of the fixing frame of this utility model;
[0017] Figure 4 This is a side view sectional diagram of the fixed shell structure of this utility model;
[0018] Figure 5 This is a schematic diagram of the front view cross-sectional structure of the fixed shell of this utility model.
[0019] In the diagram: 1. Cold air drying device; 2. Air inlet pipe; 3. Fixed shell; 4. Fixed groove; 5. Fixed frame; 6. First limiting frame; 7. Molecular sieve filter element; 8. Second limiting frame; 9. Fixed rod; 10. Handle; 11. Fixed bracket; 12. Spring; 13. Fixed pin; 14. Connecting pipe; 15. Collection hopper; 16. Support leg; 17. Rubber layer. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.
[0023] Please see Figure 1-5 This utility model provides a technical solution:
[0024] A low-temperature drying device for recycled plastics includes a cold air drying device 1 and an air inlet pipe 2. The air inlet pipe 2 is fixedly connected to the rear side of the cold air drying device 1. A fixed shell 3 is fixedly connected to the end of the air inlet pipe 2 away from the cold air drying device 1. A fixed groove 4 is formed at the top of the fixed shell 3. A rubber layer 17 is fixedly connected inside the fixed groove 4. A fixed frame 5 is provided on the inner side of the fixed groove 4 above the rubber layer 17. A first limiting frame 6 is fixedly connected to the inner side of the fixed frame 5. A molecular sieve filter element 7 is located to the left of the first limiting frame 6 on the inner side of the fixed frame 5. A second limiting frame 8 is located to the left of the molecular sieve filter element 7 on the inner side of the fixed frame 5. A fixing rod 9 is fixedly connected to the right side of the fixed shell 3, which penetrates the molecular sieve filter element 7 and is located inside the first limiting frame 6. A handle 10 is fixedly connected to the top of the fixed frame 5. Fixing frames 11 are fixedly connected to both sides of the fixed shell 3 in a symmetrical arrangement. A spring 12 is fixedly connected to the end of the fixing frame 11 away from the fixed shell 3. A fixing pin 13 is fixedly connected to the end of the spring 12 away from the fixed shell 3, which penetrates the fixing frame 11 and the fixed shell 3 and is located inside the fixed frame 5. A connecting pipe 14 is fixedly connected to the end of the fixed shell 3 away from the air inlet pipe 2. A collection hopper 15 is fixedly connected to the end of the connecting pipe 14 away from the fixed shell 3. A support leg 16 is fixedly connected to the bottom of the fixed shell 3.
[0025] The fixing groove 4, fixing frame 5, first limiting frame 6, molecular sieve filter element 7, second limiting frame 8, and rubber layer 17 form a group, with a total of four groups. The fixing groove 4, fixing frame 5, first limiting frame 6, molecular sieve filter element 7, second limiting frame 8, and rubber layer 17 are arranged in a spaced-out manner inside the fixing shell 3. The four groups of fixing groove 4, fixing frame 5, first limiting frame 6, molecular sieve filter element 7, second limiting frame 8, and rubber layer 17 can better absorb moisture in the air, making the air entering the cold air drying device 1 drier. The fixing frame 11, spring 12, and fixing pin 13 form a group, with a total of eight groups. The fixing frame 11, spring 12, and fixing pin 13 are symmetrically arranged on both sides of the fixing shell 3. Furthermore, the number and position of each pair of symmetrically arranged fixing frames 11, springs 12, fixing pins 13, and fixing grooves 4 correspond one-to-one. The multiple sets of fixing frames 11, springs 12, and fixing pins 13 can achieve the quick-release effect of the fixing frame 5. There are sixteen fixing rods 9, with four fixing rods 9 in each group. Each group of fixing rods 9 is symmetrically arranged on the right side of the second limiting frame 8. The multiple sets of fixing rods 9 can achieve the fixed installation of four molecular sieve filter elements 7. There are four support legs 16, which are symmetrically arranged on the bottom of the fixing shell 3. The four support legs 16 can provide good support for the fixing shell 3.
[0026] Workflow: When a low-temperature drying device for recycled plastics is needed, the collection hopper 15 guides external air into the connecting pipe 14, increasing the air intake speed of the connecting pipe 14 and improving the blowing efficiency of the cold air drying device 1. Multiple molecular sieve filter elements 7 utilize their properties to filter the incoming airflow, adsorbing moisture and keeping the air dry. The filtered air then enters the cold air drying device 1 through the air inlet pipe 2 for use. After prolonged use, the fixing pin 13 is pulled out of the fixing frame 5, and the fixing frame 5 and molecular sieve filter elements 7 are removed from the fixing groove 4 using the handle 10. Then, the second limiting frame 8 is pulled, causing the fixing rod 9 to move from the molecular sieve filter element 7 and the first limiting frame. Remove the molecular sieve filter element 7 from the fixed frame 5 for replacement. After replacement, re-fix it using the second limiting frame 8 and the fixing rod 9. Then, reinsert the fixed frame 5 into the fixing groove 4. Simultaneously pull the fixing pins 13 on both sides and continue to press the fixed frame 5 with the handle 10. When the fixed frame 5 reaches the bottom, it will fit with the rubber layer 17. The rubber layer 17 can act as a buffer. At this time, the holes on the fixed frame 5 will coincide with the holes on the fixed shell 3. Under the action of the spring 12 and the fixing frame 11, the spring 12 will drive the fixing pin 13, which will pass through the fixed shell 3 and enter the fixed frame 5 under the guidance of the fixing frame 11, thus fixing the fixed frame 5. This achieves the effect of quick installation of the fixed frame 5 and keeps the molecular sieve filter element 7 in the best condition.
[0027] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A low-temperature drying device for recycled plastics, comprising a cold air drying device (1) and an air inlet pipe (2), characterized in that: An air inlet pipe (2) is fixedly connected to the rear side of the cold air drying device (1). A fixed shell (3) is fixedly connected to the end of the air inlet pipe (2) away from the cold air drying device (1). A fixed groove (4) is opened at the top of the fixed shell (3). A rubber layer (17) is fixedly connected inside the fixed groove (4). A fixed frame (5) is provided on the inner side of the fixed groove (4) above the rubber layer (17). A first limiting frame (6) is fixedly connected to the inner side of the fixed frame (5). A molecular sieve filter element (7) is provided on the inner side of the fixed frame (5) to the left of the first limiting frame (6). A second limiting frame (8) is provided on the inner side of the fixed frame (5) to the left of the molecular sieve filter element (7). A penetrating molecular sieve filter element is fixedly connected to the right side of the second limiting frame (8). (7) and a fixed rod (9) located inside the first limiting frame (6), a handle (10) is fixedly connected to the top of the fixed frame (5), a fixed frame (11) is fixedly connected to both sides of the fixed shell (3) in a symmetrical arrangement, a spring (12) is fixedly connected to the end of the fixed frame (11) away from the fixed shell (3), a fixed pin (13) is fixedly connected to the end of the spring (12) away from the fixed shell (3) and passes through the fixed frame (11) and the fixed shell (3) and is located inside the fixed frame (5), a connecting pipe (14) is fixedly connected to the end of the fixed shell (3) away from the air inlet pipe (2), a collection hopper (15) is fixedly connected to the end of the connecting pipe (14) away from the fixed shell (3), and a support leg (16) is fixedly connected to the bottom end of the fixed shell (3).
2. The low-temperature drying device for recycled plastics according to claim 1, characterized in that: The fixing groove (4), fixing frame (5), first limiting frame (6), molecular sieve filter element (7), second limiting frame (8) and rubber layer (17) are a group, and there are four groups in total. The fixing groove (4), fixing frame (5), first limiting frame (6), molecular sieve filter element (7), second limiting frame (8) and rubber layer (17) are arranged in a spaced manner inside the fixing shell (3).
3. The low-temperature drying device for recycled plastics according to claim 2, characterized in that: The fixing frame (11), spring (12) and fixing pin (13) are a group, and there are eight groups in total. The fixing frame (11), spring (12) and fixing pin (13) are symmetrically arranged on both sides of the fixing shell (3), and the number and position of each pair of symmetrically arranged fixing frames (11), springs (12) and fixing pins (13) and fixing grooves (4) are all in one-to-one correspondence.
4. The low-temperature drying device for recycled plastics according to claim 1, characterized in that: There are sixteen fixing rods (9). The fixing rods (9) are arranged in groups of four, and each group of fixing rods (9) is arranged symmetrically on the right side of the second limiting frame (8).
5. The low-temperature drying device for recycled plastics according to claim 1, characterized in that: The number of the support legs (16) is four, and the four support legs (16) are arranged symmetrically on the bottom of the fixed shell (3).