Ventilation device of dryer

Abstract

The utility model relates to the technical field of air filtration, in particular to a dryer ventilation device which comprises an outer cylinder, an upper cover is arranged on the top end wall of the outer cylinder, one end of an air inlet pipe is arranged on the top end wall of the upper cover, and an inner cylinder is embedded in the outer cylinder. The outer wall of the inner cylinder is fixedly connected with the inner wall of the outer cylinder through a plurality of connecting blocks, one end of a liquid inlet pipe is arranged on the outer wall of the inner cylinder, a plurality of liquid drainage holes are formed in the inner wall of the inner cylinder, a filter cartridge is embedded in the inner cylinder, and the top end wall of the filter cartridge is fixedly connected with the bottom end wall of an upper cover through a top pipe. The ventilation filtering self-cleaning device can effectively avoid the situation that the filtering device is blocked due to impurity accumulation, can maintain good filtering performance by regularly and automatically cleaning the filtering cylinder, enables ventilation resistance to be in a reasonable range all the time, guarantees smooth circulation of air in the dryer, and improves the drying efficiency. And an enterprise can be helped to complete more drying work amount in unit time.

Description

Technical Field

[0001] This utility model relates to the field of ventilation and filtration technology, specifically to a ventilation device for a dryer. Background Technology

[0002] In the production and processing of polymer materials, the drying process plays a crucial role. Polymer materials often contain a certain amount of moisture or solvents, which need to be removed through drying to ensure their subsequent processing performance and product quality. Drying equipment typically relies on a ventilation system to circulate hot air and expel humid air, ensuring drying efficiency and effectiveness.

[0003] Currently, most polymer material dryers widely used in the market are equipped with ventilation and filtration devices. These devices are designed to intercept dust, debris, volatile small molecules, and any incompletely dried material particles generated during the drying process, preventing them from entering the external environment with the exhaust air or recirculating back into the dryer, thus affecting drying quality and causing environmental pollution.

[0004] As the drying process continues, impurities trapped in the ventilation and filtration devices accumulate, gradually clogging the filter screens or filter media pores. Once clogged, ventilation resistance increases significantly, hindering air circulation within the dryer. Hot air cannot be evenly and effectively distributed around the material, forcing a longer drying time, reducing drying efficiency and increasing energy consumption. For example, in some companies producing polyvinyl chloride (PVC) plastic granules, clogging of the drying ventilation and filtration devices has extended the drying cycle by approximately 30% compared to normal, resulting in a corresponding increase in energy consumption.

[0005] To maintain the proper filtration function of the filtration device, it needs to be cleaned regularly. However, the structural design of most existing ventilation filtration devices is not conducive to cleaning operations, often requiring manual disassembly of the filter screen or filter media for cleaning, a time-consuming and labor-intensive process. Moreover, manual cleaning requires machine shutdown, which further affects the continuous production of polymer materials and causes many inconveniences to the company's production planning. Taking a polymer fiber production factory as an example, each manual cleaning of the drying ventilation filtration device requires at least 2-3 hours of production stoppage, and frequent shutdowns for cleaning severely restrict the improvement of production capacity.

[0006] Even with manual cleaning, incomplete cleaning often occurs due to the complex structure of some filters or the difficulty in reaching every corner of the filter screen using cleaning methods. Residual impurities quickly clog the filter again during the next drying process, creating a vicious cycle of repeated cleaning but still unsatisfactory filtration results. This fails to fundamentally solve the drying quality and efficiency problems caused by filtration issues.

[0007] In summary, given the numerous problems existing in the practical application of the ventilation and filtration devices of existing polymer material dryers, there is an urgent need for a ventilation and filtration self-cleaning device that can achieve automatic cleaning, has good cleaning effect, effectively reduces manual labor intensity, and does not affect normal production, so as to meet the requirements of efficient and stable operation of polymer material drying process. Utility Model Content

[0008] To address the aforementioned problems, this invention provides a ventilation device for a dryer.

[0009] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0010] A ventilation device for a dryer includes an outer cylinder, a top cover on the top wall of the outer cylinder, an air inlet pipe on the top wall of the top cover, an inner cylinder embedded inside the outer cylinder, the outer wall of the inner cylinder being fixedly connected to the inner wall of the outer cylinder via multiple connecting blocks, a liquid inlet pipe on the outer wall of the inner cylinder, multiple drain holes on the inner wall of the inner cylinder, a filter cartridge embedded inside the inner cylinder, the top wall of the filter cartridge being fixedly connected to the bottom wall of the top cover via a top pipe, a bottom pipe on the bottom wall of the filter cartridge, and a discharge mechanism on the bottom wall of the outer cylinder.

[0011] Furthermore, the discharge mechanism includes a lower cover, and the bottom end of the bottom tube is fixedly connected to the top wall of the lower cover. The outer wall of the lower cover has multiple through holes. The bottom wall of the lower cover has a base, the bottom wall of the base has a connecting seat, the bottom wall of the connecting seat has a pipe one, the outer wall of the pipe one has a valve one, the middle of the bottom wall of the lower cover has a pipe two, the bottom wall of the pipe two penetrates the base, and the outer wall of the pipe two has a valve two, a connecting pipe is provided between the bottom walls of the pipe one and the pipe two, the outer wall of the connecting pipe has a valve three, the outer wall of the connecting pipe also has a pipe three, and the outer wall of the pipe three has a valve four.

[0012] Furthermore, the plurality of through holes are arranged circumferentially on the outer wall of the lower cover.

[0013] Furthermore, the base is connected to the inner cavity of the outer cylinder through a through hole.

[0014] Furthermore, the inner cylinder has a hollow structure, and the drain holes are arranged circumferentially at equal intervals on the inner wall of the inner cylinder.

[0015] The beneficial effects of this utility model are:

[0016] The ventilation and filtration self-cleaning device of this utility model can effectively prevent the filter from becoming clogged due to the accumulation of impurities. By regularly and automatically cleaning the filter cartridge, it can maintain its good filtration performance, keep the ventilation resistance within a reasonable range, ensure smooth air circulation in the dryer, and ensure that hot air is evenly and effectively distributed around the polymer material. This avoids the problem of forced extension of drying time due to poor air circulation, significantly improves drying efficiency, and helps enterprises complete more drying operations per unit time.

[0017] The device has an automatic cleaning function, which changes the inconvenience of relying on manual disassembly of filter screens or filter media for cleaning. It no longer requires frequent manual intervention in cleaning work. Operators only need to start the self-cleaning operation according to the set program, which greatly reduces the intensity of manual labor and saves labor costs.

[0018] Unlike existing ventilation and filtration devices that require shutdown for manual cleaning, this invention can achieve self-cleaning during normal equipment operation without interrupting the drying and production of polymer materials. It does not affect continuous production operations, avoids the many inconveniences caused to the company's production plan due to shutdown for cleaning, and helps the company maintain a stable and efficient production rhythm and ensure stable output of production capacity.

[0019] The excellent cleaning effect breaks the vicious cycle of repeated cleaning but still unsatisfactory filtration, fundamentally solving the problem of low drying quality and efficiency caused by filtration issues. This allows the ventilation and filtration device to maintain good filtration and ventilation conditions for a long time, ensuring efficient and stable operation of the drying process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the main body unfolded structure of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Outer cylinder, 2. Top cover, 3. Air inlet pipe, 4. Connecting block, 5. Inner cylinder, 6. Liquid inlet pipe, 7. Drain hole, 8. Top pipe, 9. Filter cartridge, 10. Bottom pipe, 11. Lower cover, 12. Through hole, 13. Base, 14. Connecting seat, 15. Pipe 1, 16. Valve 1, 17. Pipe 2, 18. Valve 2, 19. Connecting pipe, 20. Valve 3, 21. Pipe 3, 22. Valve 4. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] See Figure 1-2 As shown, a ventilation device for a dryer includes an outer cylinder 1, a top cover 2 on the top wall of the outer cylinder 1, an air inlet pipe 3 on the top wall of the top cover 2, an inner cylinder 5 embedded inside the outer cylinder 1, the outer wall of the inner cylinder 5 being fixedly connected to the inner wall of the outer cylinder 1 by multiple connecting blocks 4, a liquid inlet pipe 6 on the outer wall of the inner cylinder 5, multiple drain holes 7 on the inner wall of the inner cylinder 5, a filter cylinder 9 embedded inside the inner cylinder 5, the top wall of the filter cylinder 9 being fixedly connected to the bottom wall of the top cover 2 by a top pipe 8, a bottom pipe 10 on the bottom wall of the filter cylinder 9, and a discharge mechanism on the bottom wall of the outer cylinder 1.

[0027] Furthermore, the discharge mechanism includes a lower cover 11, and the bottom end of the bottom tube 10 is fixedly connected to the top wall of the lower cover 11. The outer wall of the lower cover 11 is provided with multiple through holes 12. The bottom wall of the lower cover 11 is provided with a base 13. The base 13 is connected to the inner cavity of the outer cylinder 1 through the through holes 12. The bottom wall of the base 13 is provided with a connecting seat 14. The bottom wall of the connecting seat 14 is provided with a pipe 15. The outer wall of the pipe 15 is provided with a valve 16. The middle of the bottom wall of the lower cover 11 is provided with a pipe 2 17. The bottom wall of the pipe 2 17 penetrates the base 13, and the outer wall is provided with a valve 2 18. The bottom walls of the pipe 15 and the pipe 2 17 are provided with a connecting pipe 19. The outer wall of the connecting pipe 19 is provided with a valve 3 20. The outer wall of the connecting pipe 19 is also provided with a pipe 3 21. The outer wall of the pipe 3 21 is provided with a valve 4 22.

[0028] The filtered air enters the base 13 through the through hole 12, and is discharged into the dryer through the connecting seat 14, pipe 15 and connecting pipe 19, thus completing the air filtration and delivery operation.

[0029] Wastewater inside the filter cartridge 9 is discharged into the connecting pipe 19 through the bottom pipe 10 and the second pipe 17. Wastewater outside the filter cartridge 9 is discharged into the base 13 through the through hole 12, and then discharged into the connecting pipe 19 through the connecting seat 14 and the first pipe 15. Wastewater inside the connecting pipe 19 is discharged and collected through the third pipe 21, thus completing the self-cleaning operation of the filter cartridge 9.

[0030] Furthermore, multiple through holes 12 are arranged in a circular pattern on the outer wall of the lower cover 11 to facilitate the discharge of filtered air and cleaned wastewater from the outer cylinder 1.

[0031] Furthermore, the inner cylinder 5 has a hollow structure, and the drain holes 7 are arranged in a circumferentially at equal intervals on the inner wall of the inner cylinder 5. The pressurized cleaning liquid is transported into the inner cylinder 5 through the inlet pipe 6 and sprayed out through the drain holes 7 to perform high-pressure rinsing on the outer and inner walls of the filter cartridge 9.

[0032] The detailed connection methods are well-known technologies in the field. All components in this solution are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0033] One specific application of this embodiment is:

[0034] When in use, connect the other end of the air inlet pipe 3 to the output end of the fan, and connect the other end of the connecting pipe 19 to the input end of the dryer.

[0035] Air filtration: Open valve 16 and valve 320, and the fan will deliver air into the filter cartridge 9 through the air inlet pipe 3 and the top pipe 8. The air flows from the inside of the filter cartridge 9 to the outside and is filtered by the filter cartridge 9. The filtered air enters the base 13 through the through hole 12, and is discharged into the dryer through the connecting seat 14, pipe 15 and connecting pipe 19, thus completing the air filtration and delivery operation.

[0036] Self-cleaning: Open valve 16, valve 28 and valve 42 to deliver pressurized cleaning fluid into the inner cylinder 5 through the inlet pipe 6 and spray it out through the drain hole 7 to perform high-pressure rinsing on the outer and inner walls of the filter cartridge 9. The sewage inside the filter cartridge 9 is discharged into the connecting pipe 19 through the bottom pipe 10 and the second pipe 17. The sewage outside the filter cartridge 9 is discharged into the base 13 through the through hole 12 and discharged into the connecting pipe 19 through the connecting seat 14 and the first pipe 15. The sewage in the connecting pipe 19 is discharged and collected through the third pipe 21, completing the self-cleaning operation of the filter cartridge 9.

[0037] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, alterations, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A ventilation device for a dryer, characterized in that: Including the outer cylinder (1) The top wall of the outer cylinder (1) is provided with a top cover (2), and the top wall of the top cover (2) is provided with one end of an air inlet pipe (3). The inner cylinder (5) is embedded inside the outer cylinder (1). The outer wall of the inner cylinder (5) is fixedly connected to the inner wall of the outer cylinder (1) through multiple connecting blocks (4). The outer wall of the inner cylinder (5) is provided with one end of a liquid inlet pipe (6). Multiple drain holes (7) are opened on the inner wall of the inner cylinder (5). The filter cylinder (9) is embedded inside the inner cylinder (5). The top wall of the filter cylinder (9) is fixedly connected to the bottom wall of the top cover (2) through a top pipe (8). The bottom wall of the filter cylinder (9) is provided with a bottom pipe (10). The bottom wall of the outer cylinder (1) is provided with a discharge mechanism.

2. The ventilation device for a dryer according to claim 1, characterized in that: The discharge mechanism includes a lower cover (11), and the bottom end of the bottom pipe (10) is fixedly connected to the top wall of the lower cover (11). Multiple through holes (12) are provided through the outer wall of the lower cover (11). A base (13) is provided on the bottom wall of the lower cover (11). A connecting seat (14) is provided on the bottom wall of the base (13). A pipe (15) is provided on the bottom wall of the connecting seat (14). A valve (16) is provided on the outer wall of the pipe (15). The bottom wall of the lower cover (11) is provided with a second pipe (17) in the middle. The bottom wall of the second pipe (17) passes through the base (13) and is provided with a second valve (18) on its outer wall. A connecting pipe (19) is provided between the bottom walls of the first pipe (15) and the second pipe (17). A third valve (20) is provided on the outer wall of the connecting pipe (19). A third pipe (21) is also provided on the outer wall of the connecting pipe (19). A fourth valve (22) is provided on the outer wall of the third pipe (21).

3. The ventilation device for a dryer according to claim 2, characterized in that: Multiple through holes (12) are arranged in a circular pattern on the outer wall of the lower cover (11).

4. A ventilation device for a dryer according to claim 2, characterized in that: The base (13) is connected to the inner cavity of the outer cylinder (1) through the through hole (12).

5. A ventilation device for a dryer according to claim 1, characterized in that: The inner cylinder (5) is a hollow structure, and the drain holes (7) are arranged in a circumferentially at equal intervals on the inner wall of the inner cylinder (5).

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