Automatic drainage device for adsorption dryer

Abstract

The application provides an automatic drainage device of an adsorption dryer, and belongs to the technical field of dryers. The device comprises a dryer cylinder, an air inlet pipe, a flexible water scraping assembly, a driving assembly and a gas charging and discharging assembly. A drainage pipe is fixedly arranged at the bottom of the dryer cylinder. A drainage hole is formed in the bottom wall of the dryer cylinder and is in communication with the drainage pipe. The air inlet pipe is installed on the drainage pipe. The flexible water scraping assembly is arranged inside the dryer cylinder. The driving assembly and the gas charging and discharging assembly are arranged inside the drainage pipe. Compared with the prior art, the embodiment of the application can automatically scrape and drain the condensed water on the inner wall of the dryer cylinder, thereby achieving the purpose of timely drainage. The scraping of the condensed water on the inner wall of the dryer cylinder is intermittent, thereby reducing the abrasion probability of the inner wall of the dryer cylinder and the flexible water scraping assembly, and prolonging the service life of the dryer cylinder and the flexible water scraping assembly.

Description

Technical Field

[0001] This invention belongs to the field of dryer technology, specifically an automatic drainage device for an adsorption dryer. Background Technology

[0002] Currently, when an adsorption dryer is working, humid air enters the dryer cylinder from the bottom and is then dehydrated and dried by the adsorbent inside the cylinder before being discharged from the pipe system at the top of the cylinder. However, after the humid air enters the dryer cylinder, it is easily affected by the ambient temperature and condenses into water droplets on the inner wall of the dryer cylinder. To avoid the condensate affecting the normal operation of the dryer, a drainage device is needed to drain the condensate from the inside of the dryer cylinder.

[0003] In the existing technology, most drainage devices are drain pipes installed at the bottom of the dryer cylinder. When there is a lot of condensate on the inner wall of the dryer cylinder, the condensate flows to the bottom of the dryer cylinder and is then discharged through the drain pipe. However, this drainage method is relatively traditional, and the timing of drainage cannot be controlled, resulting in problems such as untimely and incomplete drainage, which urgently need to be improved. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide an automatic drainage device for an adsorption dryer.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] An automatic drainage device for an adsorption dryer includes a dryer cylinder, an air inlet pipe, a flexible scraper assembly, a drive assembly, and an air filling and discharging assembly.

[0007] A drain pipe is fixedly installed at the bottom of the dryer cylinder, and a drain hole communicating with the drain pipe is opened on the bottom wall of the dryer cylinder.

[0008] The air intake pipe is installed on the drain pipe.

[0009] The flexible scraper assembly is disposed inside the dryer cylinder, and the drive assembly and the air filling / discharging assembly are disposed inside the drain pipe.

[0010] The drive component is used to drive the flexible wiper component to rotate.

[0011] The inflation / deflation assembly is used to intermittently inflate and deflate the interior of the flexible wiper assembly.

[0012] When the flexible wiper assembly is inflated, it expands and adheres to the inner wall of the dryer cylinder; when the flexible wiper assembly is deflated, it collapses and separates from the inner wall of the dryer cylinder.

[0013] As a further improvement of the present invention: the intake pipe includes an intake vertical pipe and an intake horizontal pipe.

[0014] The lower end of the air intake vertical pipe extends into the interior of the drain pipe, and the upper end passes through the bottom wall of the dryer cylinder and extends into the interior of the dryer cylinder. The air intake vertical pipe is fixedly connected to the bottom wall of the dryer cylinder. The top of the air intake vertical pipe is open. One end of the air intake horizontal pipe is fixedly connected to the air intake vertical pipe, and the other end passes through the side wall of the drain pipe and extends to the outside.

[0015] As a further improvement of the present invention: the driving assembly includes a driving vertical tube and a second spiral plate.

[0016] The drive vertical tube extends vertically through the air intake vertical tube and rotates with the bottom wall of the air intake vertical tube. Several sets of the second spiral plates are provided. Several sets of the second spiral plates are fixedly installed on the outer wall of the drive vertical tube located inside the air intake vertical tube. The flexible wiper assembly is installed on the tube body of the drive vertical tube located above the air intake vertical tube.

[0017] As a further improvement of the present invention: the flexible wiper assembly includes a frame rod and a flexible wiper layer.

[0018] The shape of the skeleton rod is consistent with the trend of the inner wall of the dryer cylinder. One end of the skeleton rod is fixedly connected to the side wall of the drive vertical pipe located above the air inlet vertical pipe. The flexible scraper layer is disposed on the side of the skeleton rod facing the inner wall of the dryer cylinder.

[0019] As a further improvement of the present invention: an air groove is formed on the side of the skeleton rod facing the inner wall of the dryer cylinder, one end of the air groove is connected to the inner cavity of the drive vertical pipe, the air groove is distributed along the length direction of the skeleton rod, and the flexible scraper layer is arranged inside the air groove along the length direction of the air groove.

[0020] A first spiral plate and an arc-shaped flat plate are fixedly installed on the inner wall of the drain pipe, with one end of the arc-shaped flat plate connected to one end of the first spiral plate.

[0021] The inflation / deflation assembly includes a piston rod and an extension rod.

[0022] The upper end of the piston rod extends from the bottom of the drive vertical tube into the interior of the drive vertical tube, and the lower end extends to the bottom of the drive vertical tube. A key is fixedly provided on the side wall of the piston rod, and a keyway that cooperates with the key is opened on the inner wall of the drive vertical tube. The extension rod is provided on the side wall of the piston rod.

[0023] As a further improvement of the present invention: a first magnet is fixedly installed on the inner wall of the drain pipe above the arc-shaped plate, and a support pipe is fixedly installed on the side wall of the piston rod.

[0024] One end of the extension rod extends into the inside of the support tube and is connected to the inner wall of the support tube through an elastic element, while the other end extends to the outside of the support tube and is fixedly provided with a second magnet. There is damping between the extension rod and the inner wall of the support tube, and the first magnet can repel the second magnet.

[0025] As a further improvement of the present invention: the flexible wiper layer is a rubber layer or a silicone layer.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] In this embodiment of the invention, when the adsorption dryer is working, humid air enters the dryer cylinder through the inlet pipe, then flows upward along the inside of the dryer cylinder and passes through the adsorbent inside the dryer cylinder. The adsorbent dries the humid air, and the dried air is discharged from the top of the dryer cylinder. During the above process, the flexible scraper assembly is rotated by the drive assembly, and the flexible scraper assembly is intermittently charged and discharged by the inflation and deflation assembly. When the flexible scraper assembly is charged, it expands and comes into contact with the inner wall of the dryer cylinder. At this time, the rotating flexible scraper assembly acts on the inner wall of the dryer cylinder, thereby scraping off the condensate on the inner wall of the dryer cylinder. The scraped condensate flows to the inside of the dryer cylinder. The water enters the drain pipe through the drain hole at the bottom and is then discharged through the drain pipe. When the flexible wiper assembly deflates during degassing, it separates from the inner wall of the dryer cylinder, thus preventing the flexible wiper assembly from rotating in contact with the inner wall of the dryer cylinder for a long time. This prevents excessive wear on the inner wall of the dryer cylinder and the flexible wiper assembly, extending the service life of the dryer cylinder and the flexible wiper assembly. Compared with existing technologies, it can realize automatic scraping and drainage of condensate on the inner wall of the dryer cylinder, thereby achieving the purpose of timely drainage. Moreover, the scraping of condensate on the inner wall of the dryer cylinder is intermittent, which reduces the probability of wear on the inner wall of the dryer cylinder and the flexible wiper assembly, extending the service life of the dryer cylinder and the flexible wiper assembly. Attached Figure Description

[0028] Figure 1 A schematic diagram of an automatic drainage device for an adsorption dryer. Figure 1 ;

[0029] Figure 2 A schematic diagram of an automatic drainage device for an adsorption dryer. Figure 2 ;

[0030] Figure 3 for Figure 1 Enlarged view of region A in the middle;

[0031] Figure 4 for Figure 1 Enlarged view of region B in the middle;

[0032] Figure 5 for Figure 2 Enlarged diagram of region C in the middle;

[0033] In the diagram: 10-Dryer cylinder, 101-Drain hole, 102-Drain pipe, 103-First spiral plate, 104-Arc-shaped flat plate, 105-First magnet, 20-Air inlet pipe, 201-Air inlet vertical pipe, 202-Air inlet horizontal pipe, 30-Flexible wiper assembly, 301-Skeleton rod, 302-Flexible wiper layer, 40-Drive assembly, 401-Drive vertical pipe, 402-Second spiral plate, 50-Air filling and defilling assembly, 501-Piston rod, 5011-Key, 502-Support pipe, 503-Elastic element, 504-Extension rod, 505-Second magnet. Detailed Implementation

[0034] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] Please see Figure 1 as well as Figure 2 This embodiment provides an automatic drainage device for an adsorption dryer, including a dryer cylinder 10, an air inlet pipe 20, a flexible wiper assembly 30, a drive assembly 40, and a gas filling / discharging assembly 50. A drain pipe 102 is fixedly installed at the bottom of the dryer cylinder 10, and a drain hole 101 communicating with the drain pipe 102 is opened on the bottom wall of the dryer cylinder 10. The air inlet pipe 20 is installed on the drain pipe 102. The flexible wiper assembly 30 is disposed inside the dryer cylinder 10. The drive assembly 40 and the gas filling / discharging assembly 50 are disposed inside the drain pipe 102. The drive assembly 40 is used to drive the flexible wiper assembly 30 to rotate. The gas filling / discharging assembly 50 is used to intermittently fill and discharge air inside the flexible wiper assembly 30. When the flexible wiper assembly 30 is filled with air, it expands and adheres to the inner wall of the dryer cylinder 10. When the flexible wiper assembly 30 is discharged with air, it collapses and separates from the inner wall of the dryer cylinder 10.

[0037] When the adsorption dryer is working, humid air enters the dryer cylinder 10 through the inlet pipe 20, then flows upward along the inside of the dryer cylinder 10 and passes through the adsorbent (not shown in the figure) inside the dryer cylinder 10. The adsorbent dries the humid air, and the dried air is discharged from the top of the dryer cylinder 10. During the above process, the flexible wiper assembly 30 is rotated by the drive assembly 40, and the flexible wiper assembly 30 is intermittently charged and discharged by the inflation and deflation assembly 50. When the flexible wiper assembly 30 is charged, it expands and adheres to the inner wall of the dryer cylinder 10. At this time, the rotating flexible wiper assembly 30... The flexible wiper assembly 30 acts on the inner wall of the dryer cylinder 10, thereby scraping away the condensate on the inner wall of the dryer cylinder 10. The scraped condensate flows to the bottom of the inner side of the dryer cylinder 10, and then enters the drain pipe 102 through the drain hole 101, and is discharged through the drain pipe 102. When the flexible wiper assembly 30 releases air, it collapses and separates from the inner wall of the dryer cylinder 10, thereby preventing the flexible wiper assembly 30 from rotating in contact with the inner wall of the dryer cylinder 10 for a long time, preventing excessive wear on the inner wall of the dryer cylinder 10 and the flexible wiper assembly 30, and extending the service life of the dryer cylinder 10 and the flexible wiper assembly 30.

[0038] Please see Figure 1 In one embodiment, the air intake pipe 20 includes an air intake vertical pipe 201 and an air intake horizontal pipe 202. The lower end of the air intake vertical pipe 201 extends into the interior of the drain pipe 102, and the upper end passes through the bottom wall of the dryer cylinder 10 and extends into the interior of the dryer cylinder 10. The air intake vertical pipe 201 is fixedly connected to the bottom wall of the dryer cylinder 10. The top of the air intake vertical pipe 201 is open. One end of the air intake horizontal pipe 202 is fixedly connected to the air intake vertical pipe 201, and the other end passes through the side wall of the drain pipe 102 and extends to the outside.

[0039] When the adsorption dryer is working, humid air enters the interior of the intake vertical pipe 201 from the intake horizontal pipe 202, then flows upward along the interior of the intake vertical pipe 201 and is delivered to the interior of the dryer cylinder 10 from the opening at the upper end of the intake vertical pipe 201. Then it passes through the adsorbent from bottom to top and is discharged from the top of the dryer cylinder 10.

[0040] Please see Figure 1 as well as Figure 5 In one embodiment, the drive assembly 40 includes a drive vertical tube 401 and a second spiral plate 402. The drive vertical tube 401 extends vertically through the air intake vertical tube 201 and rotates with the bottom wall of the air intake vertical tube 201. The second spiral plate 402 is provided in several groups, and several second spiral plates 402 are fixedly disposed on the outer wall of the drive vertical tube 401 located inside the air intake vertical tube 201. The flexible wiper assembly 30 is installed on the tube body of the drive vertical tube 401 located above the air intake vertical tube 201.

[0041] When humid air flows upward along the inside of the air intake vertical pipe 201, the humid air can push several second spiral plates 402, thereby driving the drive vertical pipe 401 to rotate. When the drive vertical pipe 401 rotates, it drives the flexible wiper assembly 30 to rotate.

[0042] Please see Figure 3 In one embodiment, the flexible wiper assembly 30 includes a frame rod 301 and a flexible wiper layer 302. The shape of the frame rod 301 is consistent with the inner wall of the dryer cylinder 10. One end of the frame rod 301 is fixedly connected to the side wall of the drive vertical pipe 401 located above the air intake vertical pipe 201. The flexible wiper layer 302 is disposed on the side of the frame rod 301 facing the inner wall of the dryer cylinder 10.

[0043] When the humid air flows upward along the inside of the intake vertical pipe 201 and pushes the second spiral plate 402 to drive the drive vertical pipe 401 to rotate, the drive vertical pipe 401 drives the skeleton rod 301 and the flexible wiper layer 302 to rotate.

[0044] Please see Figure 1 , Figure 3 , Figure 4 as well as Figure 5 The skeleton rod 301 has an air groove (not shown in the figure) on the side facing the inner wall of the dryer cylinder 10. One end of the air groove is connected to the inner cavity of the drive vertical pipe 401. The air grooves are distributed along the length of the skeleton rod 301. The flexible scraper layer 302 is arranged inside the air groove along the length of the air groove. A first spiral plate 103 and an arc-shaped flat plate 104 are fixedly installed on the inner wall of the drain pipe 102. One end of the arc-shaped flat plate 104 is connected to the first spiral plate 103. The inflation / deflation assembly 50 includes a piston rod 501 and an extension rod 504. The upper end of the piston rod 501 extends from the bottom of the drive vertical tube 401 into the interior of the drive vertical tube 401, and the lower end extends below the drive vertical tube 401. A key 5011 is fixedly provided on the side wall of the piston rod 501, and a keyway (not shown in the figure) that mates with the key 5011 is provided on the inner wall of the drive vertical tube 401. The extension rod 504 is provided on the side wall of the piston rod 501.

[0045] When the humid air pushes the second spiral plate 402, thereby driving the drive vertical tube 401, the skeleton rod 301, and the flexible scraper layer 302 to rotate, the drive vertical tube 401 can drive the piston rod 501 to rotate synchronously through the cooperation of the keyway and the key 5011. The piston rod 501 drives the extension rod 504 to rotate synchronously. When the extension rod 504 rotates, it acts on the upper surface of the first spiral plate 103 and slides along the upper surface of the first spiral plate 103. At this time, the extension rod 504 drives the piston rod 501 to move upward relative to the drive vertical tube 401, so as to compress the air inside the drive vertical tube 401 into the air groove, thereby driving the flexible scraper layer 302 to expand. When the extension rod 504 slides from the upper surface of the first spiral plate 103 to the upper surface of the arc-shaped plate 104, the expanded flexible scraper layer 302 is in contact with the inner wall of the dryer cylinder 10. After that, the extension rod 504 slides along the upper surface of the arc-shaped plate 104, and the flexible scraper layer 302 remains in contact with the inner wall of the dryer cylinder 10. The flexible scraper layer 302 rotates in a close-fitting state to scrape away the condensate on the inner wall of the dryer cylinder 10. After the flexible scraper layer 302 rotates to a predetermined angle and completes the scraping operation, the extension rod 504 slides away from the end of the arc-shaped plate 104 away from the first spiral plate 103. Under the action of gravity, the piston rod 501 moves downward relative to the drive vertical tube 401, thereby driving the extension rod 504 downward. The piston rod 501 draws air from the air groove into the drive vertical tube 401. The flexible scraper layer 302 collapses and separates from the inner wall of the dryer cylinder 10 until the extension rod 504 acts on the upper surface of the first spiral plate 103 again. The above steps are repeated so that the flexible scraper layer 302 intermittently contacts the inner wall of the dryer cylinder 10 during rotation, avoiding the flexible scraper layer 302 from always being in contact with the inner wall of the dryer cylinder 10 and causing wear on the inner wall of the dryer cylinder 10 and the flexible scraper layer 302.

[0046] Because the condensation process of humid air on the inner wall of the dryer cylinder 10 is relatively slow, and the inflation and deflation of the flexible scraper layer 302 is periodically controlled by the extension rod 504, the first spiral plate 103, and the second spiral plate 504, the condensate on the inner wall of the dryer cylinder 10 is minimal during the time interval between two consecutive contacts of the flexible scraper layer 302 with the inner wall of the dryer cylinder 10. Therefore, it is unnecessary to scrape off the condensate at this time. Based on this, please refer to... Figure 2 as well as Figure 4In one embodiment, a first magnet 105 is fixedly disposed on the inner wall of the drain pipe 102 above the arc-shaped plate 104, a support pipe 502 is fixedly disposed on the side wall of the piston rod 501, one end of the extension rod 504 extends into the interior of the support pipe 502 and is connected to the inner wall of the support pipe 502 through an elastic member 503, and the other end extends into the exterior of the support pipe 502 and is fixedly disposed on a second magnet 505. There is damping between the extension rod 504 and the inner wall of the support pipe 502, and the first magnet 105 can repel the second magnet 505.

[0047] When the flexible scraping layer 302 completes scraping the water off the inner wall of the dryer cylinder 10, the second magnet 505 at the end of the extension rod 504 acts on one side of the first magnet 105. At this time, the repulsive action of the first magnet 105 on the second magnet 505 drives the extension rod 504 to move into the support tube 502. The elastic element 503 is compressed. When the extension rod 504 slides away from the end of the arc-shaped plate 104 away from the first spiral plate 103, the piston rod 501 moves downward under the action of gravity. The piston rod 501 drives the support tube 502 and the extension rod 504 to move downward synchronously. After the extension rod 504 moves downward, due to the damping between the extension rod 504 and the inner wall of the support tube 502, the elastic element 503 pushes the extension rod 504 to slowly move out of the support tube 502. In the subsequent rotations of the extension rod 504 following the piston rod 501, the extension rod 504, being included outside the support tube 502, ... The extension rod 504 is not long enough to smoothly act on the upper surface of the first spiral plate 103, thus preventing the piston rod 501 from moving upward relative to the drive vertical tube 401, and thus preventing the air from being pumped into the air groove. Consequently, the flexible scraper layer 302 cannot expand, and the flexible scraper layer 302 cannot adhere to the inner wall of the dryer cylinder 10 during subsequent rotations, thus avoiding meaningless scraping operations by the flexible scraper layer 302. After the extension rod 504 rotates a certain number of times, the elastic element 503 pushes the extension rod 504 to move to its original position outside the support tube 502. At this time, the extension rod 504 can smoothly act on the upper surface of the first spiral plate 103, thereby pushing the piston rod 501 upward to pump air into the air groove and cause the flexible scraper layer 302 to expand and contact the inner wall of the dryer cylinder 10, thereby scraping off a certain amount of condensed water on the inner wall of the dryer cylinder 10.

[0048] In one embodiment, the elastic element 503 can be a spring or a metal sheet, and there is no limitation on this.

[0049] In one embodiment, the flexible wiper layer 302 can be a rubber layer or a silicone layer, and there is no limitation on this.

[0050] In this embodiment of the invention, when the adsorption dryer is working, humid air enters the dryer cylinder 10 through the inlet pipe 20, then flows upward along the inside of the dryer cylinder 10 and passes through the adsorbent inside the dryer cylinder 10. The adsorbent dries the humid air, and the dried air is discharged from the top of the dryer cylinder 10. During the above process, the flexible scraper assembly 30 is rotated by the drive assembly 40, and the air filling and emptying assembly 50 is used to intermittently fill and empty the flexible scraper assembly 30. When the flexible scraper assembly 30 is filled, it expands and comes into contact with the inner wall of the dryer cylinder 10. At this time, the rotating flexible scraper assembly 30 acts on the inner wall of the dryer cylinder 10, thereby scraping off the condensate on the inner wall of the dryer cylinder 10. The scraped condensate flows to the bottom of the inner side of the dryer cylinder 10, and then... Then, the water enters the drain pipe 102 through the drain hole 101 and is discharged through the drain pipe 102. When the flexible scraper assembly 30 releases air, it collapses and separates from the inner wall of the dryer cylinder 10, thereby preventing the flexible scraper assembly 30 from rotating in contact with the inner wall of the dryer cylinder 10 for a long time. This prevents excessive wear on the inner wall of the dryer cylinder 10 and the flexible scraper assembly 30, and extends the service life of the dryer cylinder 10 and the flexible scraper assembly 30. Compared with the prior art, it can realize automatic scraping and drainage of condensate on the inner wall of the dryer cylinder 10, thereby achieving the purpose of timely drainage. Moreover, the scraping of condensate on the inner wall of the dryer cylinder 10 is intermittent, thereby reducing the probability of wear on the inner wall of the dryer cylinder 10 and the flexible scraper assembly 30, and extending the service life of the dryer cylinder 10 and the flexible scraper assembly 30.

[0051] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An automatic drainage device for an adsorption dryer, characterized in that, This includes the dryer cylinder, air inlet pipe, flexible wiper assembly, drive assembly, and air filling / discharging assembly. A drain pipe is fixedly installed at the bottom of the dryer cylinder, and a drain hole communicating with the drain pipe is opened on the bottom wall of the dryer cylinder. The air intake pipe is installed on the drain pipe. The flexible scraper assembly is disposed inside the dryer cylinder, and the drive assembly and the air filling / discharging assembly are disposed inside the drain pipe. The drive component is used to drive the flexible wiper component to rotate. The inflation / deflation assembly is used to intermittently inflate and deflate the interior of the flexible wiper assembly. When the flexible wiper assembly is inflated, it expands and adheres to the inner wall of the dryer cylinder; when the flexible wiper assembly deflates, it collapses and separates from the inner wall of the dryer cylinder. The driving assembly includes a driving vertical tube and a second spiral plate. The flexible wiper assembly includes a frame rod and a flexible wiper layer. The skeleton rod has air grooves on one side facing the inner wall of the dryer cylinder. One end of the air groove is connected to the inner cavity of the drive vertical pipe. The air grooves are distributed along the length of the skeleton rod, and the flexible scraper layer is arranged inside the air grooves along the length of the air grooves. A first spiral plate and an arc-shaped flat plate are fixedly installed on the inner wall of the drain pipe, with one end of the arc-shaped flat plate connected to one end of the first spiral plate. The inflation / deflation assembly includes a piston rod and an extension rod. The upper end of the piston rod extends from the bottom of the drive vertical tube into the interior of the drive vertical tube, and the lower end extends to the bottom of the drive vertical tube. A key is fixedly provided on the side wall of the piston rod, and a keyway that cooperates with the key is opened on the inner wall of the drive vertical tube. The extension rod is provided on the side wall of the piston rod.

2. The automatic drainage device for an adsorption dryer according to claim 1, characterized in that, The intake pipe includes an intake vertical pipe and an intake horizontal pipe. The lower end of the air intake vertical pipe extends into the interior of the drain pipe, and the upper end passes through the bottom wall of the dryer cylinder and extends into the interior of the dryer cylinder. The air intake vertical pipe is fixedly connected to the bottom wall of the dryer cylinder. The top of the air intake vertical pipe is open. One end of the air intake horizontal pipe is fixedly connected to the air intake vertical pipe, and the other end passes through the side wall of the drain pipe and extends to the outside.

3. The automatic drainage device for an adsorption dryer according to claim 2, characterized in that, The drive vertical tube extends vertically through the air intake vertical tube and rotates with the bottom wall of the air intake vertical tube. Several sets of the second spiral plates are provided. Several sets of the second spiral plates are fixedly installed on the outer wall of the drive vertical tube located inside the air intake vertical tube. The flexible wiper assembly is installed on the tube body of the drive vertical tube located above the air intake vertical tube.

4. The automatic drainage device for an adsorption dryer according to claim 3, characterized in that, The shape of the skeleton rod is consistent with the trend of the inner wall of the dryer cylinder. One end of the skeleton rod is fixedly connected to the side wall of the drive vertical pipe located above the air inlet vertical pipe. The flexible scraper layer is disposed on the side of the skeleton rod facing the inner wall of the dryer cylinder.

5. The automatic drainage device for an adsorption dryer according to claim 1, characterized in that, A first magnet is fixedly installed on the inner wall of the drain pipe above the arc-shaped plate, and a support pipe is fixedly installed on the side wall of the piston rod. One end of the extension rod extends into the inside of the support tube and is connected to the inner wall of the support tube through an elastic element, while the other end extends to the outside of the support tube and is fixedly provided with a second magnet. There is damping between the extension rod and the inner wall of the support tube, and the first magnet can repel the second magnet.

6. An automatic drainage device for an adsorption dryer according to claim 4, characterized in that, The flexible wiper layer is a rubber layer or a silicone layer.

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