Regenerative adsorption type drying device

Abstract

The utility model discloses a regenerative adsorption type drying device, and relates to the technical field of dehumidification equipment. According to the technical key points, the device comprises two drying towers which are installed on the ground through a support, a control box is arranged between the two drying towers, and the lower ends of the two drying towers are each fixedly provided with an air inlet pipe; the drying tower is provided with an isolation channel, the lower end of the isolation channel covers the outer side of the joint of the drying tower and the air inlet pipe, and the upper end of the isolation channel is located below the top of the drying tower and spaced from the top of the drying tower. The drying tower and the isolation channel are filled with a spherical adsorbent; an air outlet pipe is fixedly mounted on one side of the lower end of the drying tower. According to the drying tower, the flowing path of gas in the drying tower can be prolonged, so that the gas to be dried is in full contact with the spherical adsorbent in the drying tower, and the drying effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of dehumidification equipment, and in particular to a regenerative adsorption drying device. Background Art

[0002] Regenerative adsorption dryer, also known as regenerative adsorption dryer, achieves drying effect through pressure swing adsorption principle. Since the ability of gas to hold water vapor is inversely proportional to pressure, part of the gas after drying (called regeneration gas) is decompressed and expanded to atmospheric pressure. This pressure change makes the expanded gas drier, and then it is allowed to flow through the desiccant layer to be regenerated (that is, the drying tower that has absorbed enough water vapor). The dry regeneration gas absorbs the moisture in the desiccant and takes it out of the dryer to achieve the purpose of dehumidification. It provides dry compressed air source for pneumatic control, pneumatic instruments, pneumatic components and industrial gas in various industries in chemical, light industry, telecommunications, petroleum, textile and other industries. It has the characteristics of small size, simple process flow, low investment, easy use and maintenance, automatic control, energy saving, etc.

[0003] When the drying tower of a traditional regenerative adsorption dryer is in use, it is filled with alumina adsorbent of uniform specifications. After the gas enters from one end of the drying tower, it is directly discharged after reaching the other end of the drying tower along the vertical direction. The flow path of the gas in the tower is short, and the contact time between the gas in the tower and the desiccant is insufficient, which will affect the drying effect of the gas. Utility Model Content

[0004] The present application provides a regenerative adsorption drying device, which can extend the flow path of the gas in the drying tower, so that the gas to be dried can fully contact with the spherical adsorbent in the drying tower, thereby improving the drying effect.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions:

[0006] A regenerative adsorption drying device comprises two drying towers mounted on the ground through a bracket, a control box is arranged between the two drying towers, an air inlet pipe is fixedly installed at the lower end of each of the two drying towers, and the air inlet pipe is connected to the internal space of the corresponding drying tower;

[0007] The drying tower is provided with an isolation passage, the lower end of which is covered on the outside of the interface between the drying tower and the air inlet pipe, and the upper end of the isolation passage is located below the top of the drying tower and is spaced from the top of the drying tower;

[0008] The drying tower and the isolation channel are filled with spherical adsorbent;

[0009] An air outlet pipe is fixedly installed on one side of the lower end of the drying tower, and the air outlet pipe is connected with the space from the outside of the isolation channel to the inner wall of the drying tower.

[0010] Furthermore, the isolation channel includes a bowl-shaped base which is open at the top and bottom, the lower port of the bowl-shaped base is in contact with the inner wall of the bottom of the drying tower, and the lower cover of the bowl-shaped base is located on the outside of the interface between the drying tower and the air inlet pipe; an hourglass-shaped guide cylinder is coaxially provided above the bowl-shaped base, and the upper port of the bowl-shaped base is fixedly connected to the lower port of the hourglass-shaped guide cylinder; the outer sides of the upper and lower ends of the hourglass-shaped guide cylinder are fixedly connected to the inner wall of the drying tower through a plurality of connecting rods.

[0011] Furthermore, a heating module is installed inside the convergent part of the hourglass-shaped guide tube.

[0012] Furthermore, a first isolation plate is provided on the lower side of the middle convergent part of the hourglass-shaped guide tube, and a second isolation plate is provided on the upper side of the middle convergent part of the hourglass-shaped guide tube. A plurality of through holes are evenly distributed on the first isolation plate and the second isolation plate, and the space between the first isolation plate and the second isolation plate in the hourglass-shaped guide tube is not filled with any of the spherical adsorbents.

[0013] Furthermore, the diameter of the spherical adsorbent in the isolation channel is smaller than the diameter of the spherical adsorbent outside the isolation channel.

[0014] Furthermore, the diameter of the spherical adsorbent below the first isolation plate in the isolation channel is smaller than the diameter of the spherical adsorbent above the second isolation plate; and the aperture of the through hole on the first isolation plate is smaller than the diameter of the spherical adsorbent below it, and the aperture of the through hole on the second isolation plate is smaller than the diameter of the spherical adsorbent above it.

[0015] Furthermore, porous intercepting plates are installed at the interfaces between the bottom of the drying tower and the air inlet pipe and the air outlet pipe, and the pore sizes of the porous intercepting plates are smaller than the diameter of the spherical adsorbent below the first isolation plate.

[0016] Furthermore, the spherical adsorbent is an activated alumina sphere.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] Since the isolation channel is covered at the interface between the drying tower and the air inlet pipe, when the gas to be dried flows into the drying tower through the air inlet pipe, it will flow upward along the isolation channel. In this process, the gas will first come into close contact with the spherical adsorbent in the isolation channel. Then, when the gas reaches the top of the drying tower, it will spread around along the top of the drying tower, and then flow downward along the inner wall of the drying tower. In this process, the gas to be dried will further come into contact with the spherical adsorbent between the isolation channel and the inner wall of the drying tower. Compared with the drying tower in the prior art that uses gas to go straight up and down, the present application increases the path length of the gas to be dried in the drying tower, so that it has enough time to fully contact with the spherical adsorbent, thereby ensuring the dry quality of the air finally discharged from the outlet pipe of the drying tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of this application;

[0021] Figure 2 It is a schematic diagram of the internal structure of one of the drying towers in the present application after being cut open;

[0022] Figure 3 It is a structural schematic diagram of one of the drying towers of the present application and the internal isolation channel after being cut open.

[0023] Figure numerals: 1. Drying tower; 2. Control box; 3. Air inlet pipe; 4. Isolation channel; 41. Bowl-shaped base; 42. Hourglass-shaped guide cylinder; 43. Connecting rod; 5. Spherical adsorbent; 6. Air outlet pipe; 7. First isolation plate; 8. Second isolation plate; 9. Porous intercepting plate; 10. Heating module. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0025] like Figure 1-Figure 3As shown, a regenerative adsorption drying device disclosed in the present application comprises two drying towers 1 installed on the ground through a bracket, a control box 2 is arranged between the two drying towers 1, an air inlet pipe 3 is fixedly installed at the lower end of each drying tower 1, and the air inlet pipe 3 is communicated with the corresponding internal space of the drying tower 1; the drying tower 1 is provided with an isolation channel 4, the lower end of the isolation channel 4 is covered on the outside of the interface between the drying tower 1 and the air inlet pipe 3, the upper end of the isolation channel 4 is located below the top of the drying tower 1 and has a gap between the top of the drying tower 1; the drying tower 1 and the isolation channel 4 are filled with spherical adsorbent 5; an air outlet pipe 6 is fixedly installed on one side of the lower end of the drying tower 1, and the air outlet pipe 6 is communicated with the space from the outside of the isolation channel 4 to the inner wall of the drying tower 1.

[0026] In the above embodiments, the air inlet pipes 3 of the two drying towers 1 of the present application are connected to the compressed air output pipeline to be dried through a common pipe system. The two drying towers 1 can alternately open and close the channel connected to the compressed air source, and alternately perform drying and regeneration, so that the compressed air containing moisture can be continuously dehumidified and dried through the two drying towers 1. Similarly, the air outlet pipes 6 of the two drying towers 1 are also connected to other processes through a common pipe system. These are all existing technologies and will not be described in detail here.

[0027] The lower end of the isolation channel 4 arranged inside the drying tower 1 of the present application is masked on the outside of the interface between the drying tower 1 and the air inlet pipe 3, so that when the gas to be dried flows into the drying tower 1 from the air inlet pipe 3, it will move from bottom to top toward the top of the drying tower 1 under the guidance of the isolation channel 4. In this process, the gas to be dried will be limited to fully contact with the spherical adsorbent 5 in the drying channel, thereby achieving a dehumidification effect; since the top and bottom of the drying tower 1 are both arc-shaped structures, after the gas reaches the inner wall of the top of the drying tower 1, it will spread around along the inner wall of the top of the drying tower 1, and these gases will continue to flow downward along the inner wall of the tower body of the drying tower 1. In this process, the gas to be dried will continue to fully contact with the spherical adsorbent 5 filled between the inner wall of the drying tower 1 and the isolation channel 4, so that the gas to be dried will complete the secondary dehumidification treatment after reaching the bottom of the drying tower 1 and become dried gas, and the dried gas will be discharged from the outlet pipe 6 at the bottom of the drying tower 1.

[0028] Compared with the drying tower 1 of the prior art, when the tower height is similar, the distance that the gas to be dried flows in the drying tower 1 of the present application is significantly longer, and the time that the gas to be dried can contact with the spherical adsorbent 5 during the movement of the gas to be dried is significantly longer and more sufficient, which can effectively improve the quality of the final dry output gas. Similarly, when the spherical adsorbent 5 after absorbing water in the drying tower 1 is regenerated, the movement path of the low-pressure dried and heated air in the drying tower 1 will also increase, which can increase the contact time between the dry air and the water-containing spherical adsorbent 5 to a certain extent, thereby improving the dehumidification efficiency of the dry air.

[0029] Furthermore, if Figure 2 and Figure 3 As shown, the isolation channel 4 includes a bowl-shaped base 41 which is open at the top and bottom, the lower port of the bowl-shaped base 41 is in contact with the inner wall of the bottom of the drying tower 1, and the lower end of the bowl-shaped base 41 is covered on the outside of the interface between the drying tower 1 and the air inlet pipe 3; an hourglass-shaped guide cylinder 42 is coaxially provided above the bowl-shaped base 41, and the upper port of the bowl-shaped base 41 is fixedly connected to the lower port of the hourglass-shaped guide cylinder 42; the outer sides of the upper and lower ends of the hourglass-shaped guide cylinder 42 are fixedly connected to the inner wall of the drying tower 1 through a plurality of connecting rods 43 respectively.

[0030] In the above embodiment, the lower end of the bowl-shaped base 41 is covered on the outside of the interface between the drying tower 1 and the air inlet pipe 3 (and the lower end of the bowl-shaped base 41 is in close contact with the inner wall of the bottom of the drying tower 1, so that the gas to be dried can be prevented from flowing to the outside of the isolation channel 4 in advance from the connection between the bowl-shaped base 41 and the bottom of the drying tower 1), and the upper end of the bowl-shaped base 41 is connected to the lower end of the hourglass-shaped guide cylinder 42, so that after the compressed gas to be dried in the air inlet pipe 3 flows into the drying tower 1, it can gradually diffuse to the hourglass-shaped guide cylinder 42 under the guidance of the bowl-shaped base 41. The gas just entering the drying tower 1 has a high water content, and a relatively large space can be formed between the lower half of the hourglass-shaped guide cylinder 42 and the bowl-shaped base 41. The amount of spherical adsorbent 5 filled in the space is also relatively large compared to the spherical adsorbent 5 in other areas of the isolation channel 4, so that the spherical adsorbent 5 in the space formed between the lower half of the hourglass-shaped guide cylinder 42 and the bowl-shaped base 41 can process more gas.

[0031] However, due to the large number of spherical adsorbents 5 in the space formed between the lower half of the hourglass-shaped guide cylinder 42 and the bowl-shaped base 41, the power of the gas to be dried will become weaker when passing through this part of the space, and the water content in the gas to be dried in the initial state is relatively large. If these gases to be dried are allowed to flow slowly upward, they will stay in this part of the space for too long, and the spherical adsorbents 5 in the space between the lower half of the hourglass-shaped guide cylinder 42 and the bowl-shaped base 41 will also absorb too much water, which will cause the spherical adsorbents 5 in this space to be saturated earlier than the spherical adsorbents 5 in other areas, thereby reducing the effective working time of a single drying tower 1.

[0032] Furthermore, a heating module 10 is installed inside the convergent portion of the hourglass-shaped guide tube 42 .

[0033] The heating module 10 fixedly installed in the convergent part of the hourglass-shaped guide tube 42 of the present application (the heating module 10 can be an electric heating plate, an electric heating tube or a PTC heating element, as long as it is a component that can be heated) can heat the gas in the area during use. Since the pressure of the high-temperature air is lower than that of the low-temperature air, a pressure difference is formed between the gas in the convergent part of the hourglass-shaped guide tube 42 and the gas below. In this way, the convergent part of the hourglass-shaped guide tube 42 will produce a certain suction force on the gas to be dried below, so that the gas to be dried between the lower half of the hourglass-shaped guide tube 42 and the bowl-shaped base 41 quickly leaves the spherical adsorbent 5 in the area, thereby reducing the processing burden of the spherical adsorbent 5 in the area, increasing the single use time of these spherical adsorbents 5, making the use time of the spherical adsorbents 5 in each area of ​​the drying tower 1 similar, thereby improving its use effect. The space with the convergent part of the hourglass-shaped guide channel 42 is relatively small, so the present application sets the heating module 10 in the convergent part of the hourglass-shaped guide channel 42 to improve the heating efficiency.

[0034] The gas to be dried will continue to flow to the upper part of the hourglass-shaped guide cylinder 42 after being accelerated by the convergent part of the hourglass-shaped guide cylinder 42. Since the upper port of the hourglass-shaped guide cylinder 42 is diffused upward, it can guide the gas to be dried and make it flow evenly to the edge of the top of the drying tower 1. In this way, the gas to be dried can flow downward along the inner wall of the drying tower 1, thereby continuing to fully contact with the spherical adsorbent 5 between the inner wall of the drying tower 1 and the isolation channel 4, and continue to be dehumidified.

[0035] Furthermore, if Figure 3 As shown, a first isolation plate 7 is provided on the lower side of the middle convergent part of the hourglass-shaped guide tube 42, and a second isolation plate 8 is provided on the upper side of the middle convergent part of the hourglass-shaped guide tube 42. A plurality of through holes are evenly distributed on the first isolation plate 7 and the second isolation plate 8. The space between the first isolation plate 7 and the second isolation plate 8 in the hourglass-shaped guide tube 42 is not filled with any spherical adsorbent 5.

[0036] In the above embodiment, since the diameter of the convergent part of the hourglass-shaped guide tube 42 is relatively small, if the spherical adsorbent 5 is still filled in this part, it may be blocked to affect the flow of the gas to be dried, or reduce the acceleration and suction effect of the convergent part of the hourglass-shaped guide tube 42 on the gas to be dried below. Therefore, the present application sets a first isolation plate 7 and a second isolation plate 8 on the upper and lower sides of the convergent part, respectively, so that a cavity is formed, thereby ensuring that the convergent part of the hourglass-shaped guide tube 42 can smoothly accelerate and suck the gas to be dried below, so that the heat generated by the heating module 10 in the hourglass-shaped guide tube 42 can also efficiently heat the gas inside.

[0037] Furthermore, if Figure 3As shown, the diameter of the spherical adsorbent 5 inside the isolation channel 4 is smaller than the diameter of the spherical adsorbent 5 outside the isolation channel 4 .

[0038] In the above embodiments, the diameter of the spherical adsorbent 5 filled in the isolation channel 4 of the present application is smaller than the diameter of the spherical adsorbent 5 outside the isolation channel 4, because the power of the gas to be dried will become smaller after passing through the isolation channel 4, and the gaps between the spherical adsorbents 5 with large diameters will be relatively large, so the resistance of the gas to be dried when passing through the spherical adsorbent 5 with larger diameter outside the isolation channel 4 will also become smaller, so that the gas to be dried can be ensured to flow smoothly from the top of the drying tower 1 to the bottom of the drying tower 1. In addition, most of the moisture has been removed from the gas to be dried after passing through the isolation channel 4, and the flow rate of these gases to be dried is significantly lower when flowing downward, so these large-diameter spherical adsorbents 5 can fully absorb the remaining moisture after fully contacting these gases to be dried. To fill the same volume, the amount of large-diameter spherical adsorbents 5 will be much lower than that of small-diameter spherical adsorbents 5 (the density of spherical adsorbents 5 of different specifications is basically the same), so the present application sets a large-diameter spherical adsorbent 5 outside the isolation channel 4 to save costs to a certain extent.

[0039] Furthermore, if Figure 3 As shown, the diameter of the spherical adsorbent 5 below the first isolation plate 7 in the isolation channel 4 is smaller than the diameter of the spherical adsorbent 5 above the second isolation plate 8; and the aperture of the through hole on the first isolation plate 7 is smaller than the diameter of the spherical adsorbent 5 below it, and the aperture of the through hole on the second isolation plate 8 is smaller than the diameter of the spherical adsorbent 5 above it.

[0040] In the above embodiment, the speed of the gas to be dried flowing through the lower part of the first isolation plate 7, the upper part of the second isolation plate 8 and the outer side of the isolation channel 4 is reduced in sequence. For example, the diameter of the spherical adsorbent 5 filled in the space below the first isolation plate 7 is 4 mm, the diameter of the spherical adsorbent 5 filled between the upper part of the second isolation plate 8 and the upper port of the isolation channel 4 is 6 mm, and the diameter of the spherical adsorbent 5 filled outside the isolation channel 4 is 8 mm. The spherical adsorbent 5 filled in the space below the first isolation plate 7 of the present application has the smallest diameter and can obtain a relatively large specific surface area. When the gas to be dried passes through this area quickly, the small-sized spherical adsorbent 5 can absorb part of the moisture by fully contacting with the gas to be dried; when the gas to be dried flows to the top of the second isolation plate 8, although it is accelerated by the convergence part of the hourglass-shaped guide cylinder 42 in the isolation channel 4, its speed is still lower than the speed below the first isolation plate 7. Filling the top of the second isolation plate 8 with the spherical adsorbent 5 with a medium diameter can not only further dehumidify the gas to be dried, but also will not cause a relatively large obstruction to the flow of the gas to be dried, so that the gas to be dried can flow smoothly to the top of the drying tower 1.

[0041] The diameters of the through holes on the first isolation plate 7 and the second isolation plate 8 are set in the above manner to ensure that no spherical adsorbent 5 enters the convergence portion of the hourglass-shaped guide tube 42 between them.

[0042] Furthermore, if Figure 3 As shown, porous intercepting plates 9 are installed at the interfaces between the bottom of the drying tower 1 and the air inlet pipe 3 and the air outlet pipe 6. The pore sizes of the porous intercepting plates 9 are smaller than the diameter of the spherical adsorbent 5 below the first isolation plate 7.

[0043] In the above embodiments, the porous connecting plate can prevent the spherical adsorbent 5 from entering the air inlet pipe 3 or the air outlet pipe 6 to block the pipe and affect gas transmission.

[0044] Furthermore, the spherical adsorbent 5 is an activated alumina ball.

[0045] In the above embodiments, since the activated alumina has uniform particle size, smooth surface, high mechanical strength, strong hygroscopicity, does not expand or crack after absorbing water, and remains in its original state, it is non-toxic, odorless, and insoluble in water and ethanol. It has the ability to selectively adsorb moisture from gases, water vapor, and certain liquids. After saturated adsorption, it can be heated at about 175-315°C to remove water and resurrect. Adsorption and resurrection can be performed multiple times. Therefore, this application selects activated alumina balls as spherical adsorbents 5.

[0046] The implementation principle of this embodiment is as follows: when in use, the air inlet pipe 3 of one of the drying towers 1 of the present application and the delivery pipe of the compressed air to be treated will be opened first, and the gas to be dried will first enter the bowl-shaped base 41 in the drying tower 1 through the air inlet pipe 3, and then flow along the bowl-shaped base 41 to the hourglass-shaped guide cylinder 42. In this process, the gas to be dried will first be dehumidified by the spherical adsorbent 5 in the space composed of the lower half of the hourglass-shaped guide cylinder 42 (the space below the first isolation plate 7 in the hourglass-shaped guide cylinder 42) and the bowl-shaped base 41, and then come to the convergence part of the hourglass-shaped guide cylinder 42 (the space with a smaller cross-sectional area between the first isolation plate 7 and the second isolation plate 8 in the hourglass-shaped guide cylinder 42). The gas in the drying tower 1 will be heated by the heating module 10 and produce a pressure difference with the gas in the space below the first isolation plate 7, thereby generating suction on the gas to be dried in this part of the space, so that the gas to be dried quickly enters the upper part of the hourglass-shaped guide cylinder 42 (the space above the second isolation plate 8 in the hourglass-shaped guide cylinder 42). The gas to be dried will not only be dehumidified again by the spherical adsorbent 5 in the upper part of the hourglass-shaped guide cylinder 42, but will also be evenly dispersed at the top of the drying tower 1 under the guidance of the inner wall of the upper half of the hourglass-shaped guide cylinder 42, and finally flow along the body of the drying tower 1 to the bottom of the tower to complete the final dehumidification treatment. The dried gas will be discharged from the outlet pipe 6 at the bottom of the drying tower 1, and then discharged to the next process through the pipe system connected to the outlet pipe 6.

[0047] When the spherical adsorbent 5 in this drying tower 1 is saturated with water, the gas to be treated can be introduced into the air inlet pipe 3 of another drying tower 1. The principle of drying the gas by the other drying tower 1 is the same as above and will not be described in detail.

[0048] When the spherical desiccant in the drying tower 1 in a saturated state is dried and reduced, low-pressure dry and heated air is introduced through the pipe system connected to the air inlet pipe 3, and the air will take away the moisture in the spherical adsorbent 5 in the drying tower 1, so as to regenerate the spherical adsorbent 5. In this way, the two drying towers 1 can alternately dry the gas to be dried.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A regenerative adsorption drying device, comprising two drying towers (1) mounted on the ground by a bracket, a control box (2) being arranged between the two drying towers (1), characterized in that: An air inlet pipe (3) is fixedly mounted at the lower end of each of the two drying towers (1), and the air inlet pipe (3) is connected to the internal space of the corresponding drying tower (1); The drying tower (1) is provided with an isolation passage (4), the lower end of the isolation passage (4) is covered on the outside of the interface between the drying tower (1) and the air inlet pipe (3), and the upper end of the isolation passage (4) is located below the top of the drying tower (1) and is spaced from the top of the drying tower (1); The drying tower (1) and the isolation channel (4) are filled with spherical adsorbent (5); An air outlet pipe (6) is fixedly mounted on one side of the lower end of the drying tower (1), and the air outlet pipe (6) is connected to the space between the outside of the isolation channel (4) and the inner wall of the drying tower (1).

2. The regenerative adsorption drying device according to claim 1, characterized in that: The isolation passage (4) comprises a bowl-shaped base (41) which is open at the top and the bottom, the lower end of the bowl-shaped base (41) is in contact with the inner wall of the bottom of the drying tower (1), and the lower end of the bowl-shaped base (41) is covered on the outside of the interface between the drying tower (1) and the air inlet pipe (3); an hourglass-shaped guide cylinder (42) is coaxially arranged above the bowl-shaped base (41), the upper end of the bowl-shaped base (41) is fixedly connected to the lower end of the hourglass-shaped guide cylinder (42); the outer sides of the upper and lower ends of the hourglass-shaped guide cylinder (42) are respectively fixedly connected to the inner wall of the drying tower (1) through a plurality of connecting rods (43).

3. The regenerative adsorption drying device according to claim 2, characterized in that: A heating module (10) is installed inside the convergent portion of the hourglass-shaped guide tube (42).

4. The regenerative adsorption drying device according to claim 2, characterized in that: A first isolation plate (7) is provided on the lower side of the middle convergent portion of the hourglass-shaped guide tube (42), and a second isolation plate (8) is provided on the upper side of the middle convergent portion of the hourglass-shaped guide tube (42). A plurality of through holes are evenly distributed on the first isolation plate (7) and the second isolation plate (8), and the space between the first isolation plate (7) and the second isolation plate (8) in the hourglass-shaped guide tube (42) is not filled with any of the spherical adsorbents (5).

5. The regenerative adsorption drying device according to any one of claims 1 to 4, characterized in that: The diameter of the spherical adsorbent (5) inside the isolation channel (4) is smaller than the diameter of the spherical adsorbent (5) outside the isolation channel (4).

6. The regenerative adsorption drying device according to claim 4, characterized in that: The diameter of the spherical adsorbent (5) below the first isolation plate (7) in the isolation channel (4) is smaller than the diameter of the spherical adsorbent (5) above the second isolation plate (8); and the diameter of the through hole on the first isolation plate (7) is smaller than the diameter of the spherical adsorbent (5) below it, and the diameter of the through hole on the second isolation plate (8) is smaller than the diameter of the spherical adsorbent (5) above it.

7. The regenerative adsorption drying device according to claim 6, characterized in that: A porous intercepting plate (9) is installed at the interface between the bottom of the drying tower (1) and the air inlet pipe (3) and the air outlet pipe (6), and the pore diameter of the porous intercepting plate (9) is smaller than the diameter of the spherical adsorbent (5) below the first isolation plate (7).

8. The regenerative adsorption drying device according to any one of claims 1 to 4, characterized in that: The spherical adsorbent (5) is an activated alumina sphere.

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