Polyformaldehyde granule processing system

Abstract

The utility model provides a polyformaldehyde granule processing system, which comprises a material storage system, a polyformaldehyde granule processing system, a polyformaldehyde granule processing system and a polyformaldehyde granule processing system, and is characterized in that the material storage system is used for storing materials produced by an extruder; a material inlet of the drying system is communicated with a material outlet of the material storage system, and the drying system is used for heating and drying materials; a feed port of the middle bin is communicated with a discharge port of the drying system; one end of the first return pipeline is communicated with the discharge port of the drying system, and the other end of the first return pipeline is communicated with the storage system; and the first sampling port is communicated with the discharge port of the drying system and is used for sampling the materials dried by the drying system. According to the technical scheme provided by the utility model, the problem of poor removal effect of small molecules in polyformaldehyde granules in the prior art can be solved.

Description

Technical Field

[0001] This utility model relates to the field of polyoxymethylene processing technology, and more specifically, to a polyoxymethylene granule processing system. Background Technology

[0002] After being extruded and granulated by an extruder, polyoxymethylene products still need to undergo a hot air drying process to remove small molecules such as moisture and formaldehyde. Then, they are pneumatically conveyed to intermediate silos for remixing, distribution, and settling. Small molecules that escape from multiple intermediate silos are drawn out by fans. After the granules pass the analysis, they are sent to the packaging process.

[0003] Currently, polyoxymethylene (POM) granules are dried using hot air and then directly sent to an intermediate silo for settling, thereby removing small molecules. The removal of small molecules is ensured by controlling the settling time (adjusting the frequency of the feed cyclone and the discharge valve). However, hot air drying and intermediate silo settling alone are insufficient to guarantee that the removal of small molecules from the granules meets the required standards. Utility Model Content

[0004] This invention provides a polyoxymethylene (POM) granule processing system to solve the problem of poor small molecule removal in existing POM granules.

[0005] This utility model provides a polyoxymethylene (POM) granule processing system, comprising: a storage system for storing materials produced by an extruder; a drying system with its inlet connected to the outlet of the storage system, used for heating and drying the materials; an intermediate silo with its inlet connected to the outlet of the drying system; a first return pipeline with one end connected to the outlet of the drying system and the other end connected to the storage system; and a first sampling port connected to the outlet of the drying system, used for sampling the dried materials.

[0006] Furthermore, the drying system includes: a drying buffer chamber, the inlet of which is connected to the outlet of the storage system; a first dryer, which is connected to the outlet of the drying buffer chamber and is capable of removing moisture from the material; and a second dryer, which is connected to the first dryer and located downstream of the first dryer and is capable of removing formaldehyde from the material, and whose outlet is connected to the inlet of the intermediate chamber.

[0007] Furthermore, the polyoxymethylene granule processing system also includes: a blending bin, which has a feed inlet and a product outlet positioned opposite each other, the feed inlet of the blending bin being connected to the discharge outlet of the intermediate bin; a product pipeline, which is connected to the product outlet; and a blending pipeline, one end of which is connected to the product outlet and the other end of which is connected to the feed inlet of the blending bin.

[0008] Furthermore, the polyoxymethylene granule processing system includes multiple blending chambers connected in parallel. The product pipeline includes multiple branch product pipelines and a main product pipeline. The multiple branch product pipelines are connected to the product outlets of the multiple blending chambers one by one. The outlets of the multiple branch product pipelines are connected to the inlet of the main product pipeline. The blending pipeline is connected to the main product pipeline. The blending pipeline is connected to the product outlet of the blending chamber through the main product pipeline. The blending pipeline is connected to the feed inlet of each of the multiple blending chambers.

[0009] Furthermore, the polyoxymethylene granule processing system also includes: a blending valve, installed at the connection between the blending pipeline and the main product pipeline; and a first drive system, connected to the blending pipeline, which is used to drive the material in the blending pipeline back to the blending bin.

[0010] Furthermore, the drying system also includes: regulating valves, with regulating valves installed between the drying buffer chamber and the first dryer, and between the first dryer and the second dryer; a second drive system, including a first drive pipeline and a second drive pipeline, the first drive pipeline being connected to the pipeline connecting the second dryer and the intermediate chamber inlet, the second drive pipeline being connected to the buffer chamber, the first drive pipeline being used to provide power for the material to flow into the intermediate chamber, and the second drive pipeline being used to provide power for the material to flow within the drying system; and control valves, installed between the first drive pipeline, the second drive pipeline, and the pipeline connecting the second dryer and the intermediate chamber inlet.

[0011] Furthermore, the storage system includes: multiple storage silos connected in parallel; branch storage pipelines and a main storage pipeline; the multiple branch storage pipelines are connected to the outlets of the multiple storage silos one by one; the outlets of the multiple branch storage pipelines are connected to the inlet of the main storage pipeline; and the drying system is connected to the outlet of the main storage pipeline.

[0012] Furthermore, a second sampling port is provided on the pipeline connecting the discharge port of the intermediate silo and the inlet of the mixing silo. The polyoxymethylene granule processing system also includes a grinding mill, the inlet of which is connected to the discharge port of the intermediate silo.

[0013] Furthermore, the polyoxymethylene granule processing system includes multiple intermediate silos connected in parallel. The polyoxymethylene granule processing system also includes a main intermediate pipeline and multiple branch intermediate pipelines. The multiple branch intermediate pipelines are connected to the discharge ports of the multiple intermediate silos one by one. The outlets of the multiple branch intermediate pipelines are connected to the inlet of the main intermediate pipeline. The outlet of the main intermediate pipeline is connected to the inlet of the blending silo.

[0014] Furthermore, the polyoxymethylene granule processing system also includes a third drive system, which is connected to the main storage pipeline and the drying system, and is used to drive the material into the drying system.

[0015] By applying the technical solution of this utility model, the storage system can store the material produced by the extruder, and then send the material to the drying system for hot air drying through the outlet of the storage system and the inlet of the drying system to remove moisture, formaldehyde and other small molecule substances from the material. After drying, the dried material is sampled through the first sampling port to test whether the moisture removal meets the drying requirements. If the drying requirements are met, it can be sent to the intermediate chamber for settling to further remove small molecule substances; if the drying requirements are not met, it can be sent back to the storage system through the first return pipeline for secondary drying to meet the requirements for removing small molecule substances. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the polyoxymethylene granule processing system provided by this utility model is shown.

[0018] Figure 2 A schematic diagram of the material storage system provided by this utility model is shown;

[0019] Figure 3 A schematic diagram of the drying system provided by this utility model is shown;

[0020] Figure 4 A schematic diagram of the static system provided by this utility model is shown;

[0021] Figure 5 A schematic diagram of the mixing system provided by this utility model is shown.

[0022] The above figures include the following reference numerals:

[0023] 10. Material storage system;

[0024] 11. Extruder;

[0025] 12. Storage silos;

[0026] 13. Branch storage pipelines;

[0027] 14. Main material storage pipeline;

[0028] 15. Third drive system;

[0029] 20. Drying system;

[0030] 21. Drying buffer chamber;

[0031] 22. First dryer;

[0032] 23. Second dryer;

[0033] 24. Control valve;

[0034] 25. Second drive system;

[0035] 251. First drive pipeline;

[0036] 252. Second drive pipeline;

[0037] 26. Control valve;

[0038] 30. Static system;

[0039] 31. Intermediate warehouse;

[0040] 32. Main intermediate pipeline;

[0041] 33. Branch intermediate pipeline;

[0042] 40. First return pipeline;

[0043] 50. First sampling port;

[0044] 60. Blending system;

[0045] 61. Blending bin;

[0046] 62. Product pipeline;

[0047] 621. Branch product pipeline;

[0048] 622. Total product pipeline;

[0049] 64. Blending pipelines;

[0050] 65. Mixing valve;

[0051] 66. First drive system;

[0052] 70. Second sampling port;

[0053] 80. Grinding mill;

[0054] 90. Dust removal fan;

[0055] 100. Finished Goods Warehouse. Detailed Implementation

[0056] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0057] like Figures 1 to 5 As shown in the figure, this utility model embodiment provides a polyoxymethylene (POM) granule processing system, which includes: a storage system 10, a drying system 20, an intermediate silo 31, a first return pipeline 40, and a first sampling port 50. The storage system 10 is used to store materials produced by the extruder 11; the inlet of the drying system 20 is connected to the outlet of the storage system 10, and the drying system 20 is used to heat and dry the materials; the inlet of the intermediate silo 31 is connected to the outlet of the drying system 20; one end of the first return pipeline 40 is connected to the outlet of the drying system 20, and the other end of the first return pipeline 40 is connected to the storage system 10; the first sampling port 50 is connected to the outlet of the drying system 20, and the first sampling port 50 is used to sample the materials dried by the drying system 20.

[0058] Using the technical solution of this utility model, the storage system 10 can store the material produced by the extruder 11, and then send the material to the drying system 20 for hot air drying through the outlet of the storage system 10 and the inlet of the drying system 20 to remove moisture, formaldehyde and other small molecule substances from the material. After drying, the dried material is sampled through the first sampling port 50 to test whether the moisture removal meets the drying requirements. If the drying requirements are met, it can be sent to the intermediate chamber 31 in the settling system 30 for settling to further remove small molecule substances; if the drying requirements are not met, it can be sent back to the storage system 10 through the first return pipeline 40, and then sent to the drying system 20 for secondary drying to remove small molecule substances to meet the drying requirements.

[0059] like Figure 3As shown, the drying system 20 includes a drying buffer chamber 21, a first dryer 22, and a second dryer 23. The inlet of the drying buffer chamber 21 is connected to the outlet of the storage system 10; the first dryer 22 is connected to the outlet of the drying buffer chamber 21 and removes moisture from the material; the second dryer 23 is connected to the first dryer 22 and located downstream of it, removes formaldehyde from the material, and its outlet is connected to the inlet of the intermediate chamber 31. Through this arrangement, the drying buffer chamber 21 reduces the mutual interference between the storage system 10 and the first dryer 22, preventing damage to the first dryer 22 due to a malfunction in the storage system 10, thus improving the reliability of the entire system. In addition, the drying buffer chamber 21 can also quantitatively and accurately deliver materials to the first dryer 22 and the second dryer 23, which helps to reduce material waste, improve resource utilization, and also helps the first dryer 22 and the second dryer 23 to be in the best drying state, thus improving the removal effect of small molecule substances.

[0060] The system includes multiple dryers, each controlling the hot air drying time to remove moisture and small molecules such as formaldehyde. The first dryer 22 removes moisture and a small amount of formaldehyde from the material. The second dryer 23 is connected to the first dryer 22 and is located downstream of the first dryer 22. Any remaining formaldehyde in the material is sent to the second dryer 23 for further removal.

[0061] like Figure 5 As shown, the polyoxymethylene granule processing system also includes a blending bin 61, a product pipeline 62, and a blending pipeline 64. The blending bin 61 has a feed inlet and a product outlet positioned opposite each other, with the feed inlet of the blending bin 61 connected to the discharge outlet of the intermediate bin 31. The product pipeline 62 is connected to the product outlet. One end of the blending pipeline 64 is connected to the product outlet, and the other end of the blending pipeline 64 is connected to the feed inlet of the blending bin 61. With the above setup, the granules in the intermediate silo 31 are fed into the blending silo 61 through the inlet. The product pipeline 62 is connected to the product outlet, and one end of the blending pipeline 64 is connected to the product outlet, while the other end of the blending pipeline 64 is connected to the inlet of the blending silo 61. In this way, the material in the blending silo 61 first flows through the product outlet, then through the product pipeline 62, then through the blending pipeline 64, and finally into the inlet of the blending silo 61. At the same time, the granules in the intermediate silo 31 are also fed into the blending silo 61 through the inlet of the blending silo 61 to achieve continuous blending of materials. The blending system 60 ensures the uniformity of indicators and the stability of quality of polyoxymethylene products in batches.

[0062] Furthermore, the polyoxymethylene (POM) granule processing system includes multiple blending chambers 61 connected in parallel. The product pipeline 62 includes multiple branch product pipelines 621 and a main product pipeline 622. Each branch product pipeline 621 is connected to a corresponding product outlet of one of the blending chambers 61, and the outlets of each branch product pipeline 621 are connected to the inlet of the main product pipeline 622. A blending pipeline 64 is connected to the main product pipeline 622 and, through the main product pipeline 622, to the product outlet of each blending chamber 61. The blending pipeline 64 is also connected to the feed inlets of each of the blending chambers 61. This configuration, with the multiple blending chambers 61 connected in parallel, the blending pipeline 64 connected to the product outlet of each blending chamber 61 through the main product pipeline 622, and the blending pipeline 64 connected to the feed inlets of each blending chamber 61, ensures that the materials within each blending chamber 61 can be blended, guaranteeing uniformity of indicators and stable quality across different batches of material. The outlets of multiple branch product pipelines 621 are connected to the inlet of the main product pipeline 622, which can meet the needs of joint material feeding in production and improve production efficiency.

[0063] Specifically, the polyoxymethylene (POM) granule processing system also includes a blending valve 65 and a first drive system 66. The blending valve 65 is located at the connection between the blending pipeline 64 and the main product pipeline 622; the first drive system 66 is connected to the blending pipeline 64 and is used to drive the material in the blending pipeline 64 back to the blending silo 61. Through this configuration, the blending valve 65, located at the connection between the blending pipeline 64 and the main product pipeline 622, can control the blending of the material in the blending silo 61 by the blending pipeline 64. When blending is complete, the blending valve 65 is closed, allowing the material in the blending silo 61 to be transported to the finished product silo 100 for packaging via the main product pipeline 622. The first drive system 66 is connected to the blending pipeline 64 and is used to drive the material in the blending pipeline 64 back to the blending silo 61. This eliminates the need for manual operation, ensuring continuous and stable blending of the material and guaranteeing consistent material quality.

[0064] like Figure 3As shown, the drying system 20 also includes a regulating valve 24, a second drive system 25, and a control valve 26. Regulating valves 24 are installed between the drying buffer chamber 21 and the first dryer 22, and between the first dryer 22 and the second dryer 23. The second drive system 25 includes a first drive line 251 and a second drive line 252. The first drive line 251 is connected to the pipeline connecting the second dryer 23 and the feed inlet of the intermediate chamber 31, and the second drive line 252 is connected to the drying buffer chamber 21. The first drive line 251 provides power for the material to flow into the intermediate chamber 31, and the second drive line 252 provides power for the material to flow within the drying system 20. The control valve 26 is located between the first drive line 251, the second drive line 252, and the pipeline connecting the second dryer 23 and the feed inlet of the intermediate chamber 31. With the above settings, the regulating valve 24, located between the drying buffer chamber 21 and the first dryer 22, and between the first dryer 22 and the second dryer 23, can regulate the material that needs to be dried entering the first dryer 22 and the second dryer 23, so that the first dryer 22 and the second dryer 23 are in the best drying state, thereby improving the removal effect of small molecules.

[0065] Specifically, the second drive line 252 and the control valve 26 can balance the air pressure between the drying buffer chamber 21, the first dryer 22, and the second dryer 23. The internal pressure of the drying buffer chamber 21, the first dryer 22, and the second dryer 23 will continuously increase due to the accumulation of materials and their weight. Balancing the pressure ensures that the material can flow out smoothly, reducing blockages and material jamming, and improving production efficiency. Furthermore, excessive internal pressure can cause the structures of the drying buffer chamber 21, the first dryer 22, and the second dryer 23 to rupture due to the inability to withstand the pressure. Balancing the pressure can prevent damage to the equipment and its auxiliary components.

[0066] The first drive line 251 provides power to the material flowing into the intermediate silo 31, so that the material is continuously and stably conveyed to the intermediate silo 31. The second drive line 252 provides power to the material flowing within the drying system 20, so that the material can be smoothly conveyed from the first dryer 22 to the second dryer 23.

[0067] like Figure 2As shown, the storage system 10 includes multiple storage silos 12, branch storage pipelines 13, and a main storage pipeline 14. The multiple storage silos 12 are connected in parallel; the multiple branch storage pipelines 13 are connected one-to-one with the outlets of the multiple storage silos 12, the outlets of the multiple branch storage pipelines 13 are connected to the inlet of the main storage pipeline 14, and the drying system 20 is connected to the outlet of the main storage pipeline 14. Through this arrangement, the multiple storage silos 12 can store a large quantity of material, improving production efficiency. The connection between the outlets of the multiple branch storage pipelines 13 and the inlet of the main storage pipeline 14 meets the need for simultaneous material feeding during production, providing sufficient material to the drying system 20 to maintain optimal drying conditions and improve the removal of small molecules.

[0068] Furthermore, a second sampling port 70 is installed on the pipeline connecting the discharge port of intermediate silo 31 and the inlet of blending silo 61. The polyoxymethylene granule processing system also includes a grinding mill 80, the inlet of which is connected to the discharge port of intermediate silo 31. Through the above configuration, the second sampling port 70 can verify whether the removal of formaldehyde and other small molecule substances in the material after it has been left to stand in intermediate silo 31 has met the requirements. If the requirements are not met, the material is sent to the grinding mill 80 through the discharge port of intermediate silo 31 to be ground into powder again, the formula is readjusted, and the material is then re-granulated by extruder 11, reducing the product defect rate, improving resource utilization, and increasing economic benefits.

[0069] like Figure 4 As shown, the polyoxymethylene (POM) granule processing system includes multiple intermediate silos 31 connected in parallel. The system also includes a main intermediate pipeline 32 and multiple branch intermediate pipelines 33. Each branch intermediate pipeline 33 is connected to the outlet of one of the intermediate silos 31, and the outlet of each branch intermediate pipeline 33 is connected to the inlet of the main intermediate pipeline 32. The outlet of the main intermediate pipeline 32 is connected to the inlet of the blending silo 61. Through this configuration, the dried material is fed into the intermediate silos 31 for separate storage according to indicators such as melt flow rate (MI), number of colored particles, and surface formaldehyde content. The material in the multiple intermediate silos 31 can be fed into the blending silo 61 either through the branch intermediate pipelines 33 and then separately through the main intermediate pipeline 32, or all the material in the multiple intermediate silos 31 can be fed into the blending silo 61 together through the main intermediate pipeline 32, meeting different production needs and improving production efficiency.

[0070] Specifically, the polyoxymethylene granule processing system also includes a third drive system 15, which is connected to the main storage pipeline 14 and the drying system 20 via a pipeline. The third drive system 15 is used to drive the material into the drying system 20. With the above configuration, the third drive system 15 can deliver the material in the storage silo 12 to the drying system 20 through the pipeline connecting the main storage pipeline 14 and the drying system 20, enabling the drying system 20 to continuously and stably dry the material.

[0071] In the embodiments of this application, air outlets are provided on multiple storage silos 12, multiple intermediate silos 31, multiple blending silos 61, and drying buffer silos 21, and all of them are connected to the dust removal fan 90 through pipelines. With this configuration, the dust removal fan 90 can discharge waste gas containing debris, formaldehyde, and moisture from the material, ensuring the removal effect of small molecule substances in the material.

[0072] 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.

[0073] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0074] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0075] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0076] 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 cannot be construed as limiting the scope of protection of this utility model.

[0077] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A polyoxymethylene granule processing system, characterized in that, The polyoxymethylene granule processing system includes: A storage system (10) for storing materials produced by the extruder (11); A drying system (20) is provided, wherein the inlet of the drying system (20) is connected to the outlet of the storage system (10), and the drying system (20) is used to heat and dry the material. Intermediate silo (31), the inlet of which is connected to the outlet of the drying system (20); The first return pipeline (40) has one end connected to the outlet of the drying system (20) and the other end connected to the storage system (10). The first sampling port (50) is connected to the discharge port of the drying system (20), and the first sampling port (50) is used to sample the material dried by the drying system (20).

2. The polyoxymethylene granule processing system according to claim 1, characterized in that, The drying system (20) includes: A drying buffer chamber (21) is provided, the inlet of which is connected to the outlet of the storage system (10). The first dryer (22) is connected to the outlet of the drying buffer chamber (21) and is capable of removing moisture from the material. The second dryer (23) is connected to the first dryer (22) and is located downstream of the first dryer (22). The second dryer (23) can remove formaldehyde from the material. The outlet of the second dryer (23) is connected to the inlet of the intermediate silo (31).

3. The polyoxymethylene granule processing system according to claim 2, characterized in that, The polyoxymethylene granule processing system also includes: A mixing chamber (61) has an inlet and a product outlet arranged opposite to each other, and the inlet of the mixing chamber (61) is connected to the outlet of the intermediate chamber (31). Product pipeline (62), wherein the product pipeline (62) is connected to the product outlet; A blending pipeline (64) is provided, one end of which is connected to the product outlet and the other end of which is connected to the feed inlet of the blending bin (61).

4. The polyoxymethylene granule processing system according to claim 3, characterized in that, The polyoxymethylene granule processing system includes multiple blending chambers (61) arranged in parallel. The product pipeline (62) includes multiple branch product pipelines (621) and a main product pipeline (622). The multiple branch product pipelines (621) are connected to the product outlets of the multiple blending chambers (61) one by one. The outlets of the multiple branch product pipelines (621) are connected to the inlet of the main product pipeline (622). The blending pipeline (64) is connected to the main product pipeline (622). The blending pipeline (64) is connected to the product outlet of the blending chamber (61) through the main product pipeline (622). The blending pipeline (64) is connected to the feed inlet of the multiple blending chambers (61) respectively.

5. The polyoxymethylene granule processing system according to claim 4, characterized in that, The polyoxymethylene granule processing system also includes: A mixing valve (65) is installed at the connection between the mixing line (64) and the main product line (622); A first drive system (66) is connected to the blending pipeline (64) and is used to drive the material in the blending pipeline (64) back to the blending bin (61).

6. The polyoxymethylene granule processing system according to claim 2, characterized in that, The drying system (20) also includes: The regulating valve (24) is provided between the drying buffer chamber (21) and the first dryer (22), and between the first dryer (22) and the second dryer (23); The second drive system (25) includes a first drive line (251) and a second drive line (252). The first drive line (251) is connected to the pipeline that connects to the feed inlet of the second dryer (23) and the intermediate chamber (31). The second drive line (252) is connected to the drying buffer chamber (21). The first drive line (251) is used to provide power for the material to flow into the intermediate chamber (31). The second drive line (252) is used to provide power for the material to flow within the drying system (20). A control valve (26) is disposed between the first drive line (251), the second drive line (252), and the line connecting the second dryer (23) and the feed inlet of the intermediate chamber (31).

7. The polyoxymethylene granule processing system according to claim 1, characterized in that, The storage system (10) includes: Multiple storage bins (12) are arranged in parallel; Branch storage pipelines (13) and main storage pipeline (14), the multiple branch storage pipelines (13) are connected to the outlets of the multiple storage bins (12) one by one, the outlets of the multiple branch storage pipelines (13) are connected to the inlet of the main storage pipeline (14), and the drying system (20) is connected to the outlet of the main storage pipeline (14).

8. The polyoxymethylene granule processing system according to claim 3, characterized in that, A second sampling port (70) is provided on the pipeline connecting the discharge port of the intermediate silo (31) and the inlet of the mixing silo (61). The polyoxymethylene granule processing system also includes a grinding mill (80), the inlet of which is connected to the discharge port of the intermediate silo (31).

9. The polyoxymethylene granule processing system according to claim 3, characterized in that, The polyoxymethylene granule processing system includes multiple intermediate silos (31) connected in parallel. The polyoxymethylene granule processing system also includes a main intermediate pipeline (32) and multiple branch intermediate pipelines (33). The multiple branch intermediate pipelines (33) are connected to the outlets of the multiple intermediate silos (31) one by one. The outlets of the multiple branch intermediate pipelines (33) are connected to the inlet of the main intermediate pipeline (32). The outlet of the main intermediate pipeline (32) is connected to the inlet of the blending silo (61).

10. The polyoxymethylene granule processing system according to claim 7, characterized in that, The polyoxymethylene granule processing system further includes a third drive system (15), which is connected to the pipelines of the main storage pipeline (14) and the drying system (20) and is used to drive the material into the drying system (20).

Images