Suction-drying machine adsorption cartridge structure

Abstract

The utility model relates to a kind of suction dryer adsorption cylinder structures, comprising: adsorption cylinder, its bottom end and top end are provided with air inlet and air outlet respectively;Partition, horizontally set in the bottom end of adsorption cylinder, and the internal chamber of adsorption cylinder is separated into upper adsorption cavity and lower gas distribution cavity, upper adsorption cavity is communicated with air outlet and is filled with adsorbent, lower gas distribution cavity is communicated with air inlet, the bottom end of partition is arranged with several partition plates along radial direction, and partition plate divides lower gas distribution cavity into multiple independent gas distribution sub-cavities;Multiple gas diffusers, installed above partition and communicated with multiple gas distribution sub-cavities correspondingly.The utility model can forcibly scatter the airflow concentrated from air inlet and distribute evenly to the entire adsorption bed layer cross section of upper adsorption cavity, form multiple uniform cylindrical flow beds, so that all adsorbent can be in full contact with airflow, greatly improve the utilization of adsorbent, and greatly improve the pressure dew point of compressed gas.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to an adsorption cylinder structure for a desiccant dryer. Background Technology

[0002] Adsorption dryers (hereinafter referred to as adsorption dryers) are key equipment for compressed air post-treatment. Their core task is to remove water molecules from compressed air through adsorbents, thereby reducing the pressure dew point of the gas and ensuring that the dryness of the supplied air meets the usage requirements.

[0003] Currently, the desiccant dryer industry typically employs adsorption cylinders filled with adsorbent. Through program control, two or more cylinders alternate between adsorption and regeneration states to achieve continuous drying of compressed air. During the adsorption phase, compressed air containing moisture enters one adsorption cylinder, where the water molecules are captured by the adsorbent, and the dried air exits from the top of the cylinder. In the regeneration phase, the other adsorption cylinder uses a specific regeneration method (such as introducing hot air) to desorb the adsorbed moisture from the adsorbent, restoring its drying capacity. The two cylinders switch roles according to a set cycle.

[0004] The classic external designs of adsorption cylinders from various manufacturers are largely similar, all being pressure vessels. The main differences lie in the internal airflow distribution system. The airflow distribution inside existing adsorption cylinders is as follows: Figure 1 As shown, compressed air enters the interior of the adsorption cylinder 1 through the gas diffuser 2 at the bottom of the adsorption cylinder 1. The adsorption cylinder 1 is filled with a large amount of adsorbent. The compressed air easily forms a cylindrical gas flow bed 3 that "directly penetrates" the interior of the adsorption cylinder 1, which causes a large amount of adsorbent outside the gas flow bed 3 to fail to fully contact the compressed air, resulting in low utilization of the adsorbent. Utility Model Content

[0005] The purpose of this invention is to provide an adsorption cylinder structure for a desiccant dryer, so as to solve the problem of low adsorbent utilization caused by uneven airflow distribution in existing adsorption cylinders.

[0006] To achieve the above objectives, this utility model provides an adsorption cylinder structure for a desiccant dryer, comprising:

[0007] The adsorption cylinder has an air inlet at its bottom and an air outlet at its top.

[0008] A partition plate is horizontally disposed at the bottom end of the adsorption cylinder, dividing the internal chamber of the adsorption cylinder into an upper adsorption chamber and a lower gas distribution chamber. The upper adsorption chamber is connected to the gas outlet and filled with adsorbent, while the lower gas distribution chamber is connected to the gas inlet. Several partition plates are arranged radially at the bottom end of the partition plate, and the partition plates divide the lower gas distribution chamber into multiple independent gas distribution sub-chambers.

[0009] Multiple gas diffusers are installed above the partition plate and are connected to the multiple gas distribution sub-cavities.

[0010] Optionally, an air distribution cylinder is provided in the lower air distribution chamber. The bottom end of the air distribution cylinder is connected to the air inlet, and the top end is vertically connected to the partition plate. The air distribution cylinder is provided with air guide holes that correspond one-to-one with each of the air distribution sub-chambers.

[0011] Optionally, the number of gas diffusers is configured based on the inner diameter of the adsorption tube, such that the projected outer diameters of the quasi-cylindrical fluid beds formed above adjacent gas diffusers when they are in operation are tangent or partially overlap.

[0012] Optionally, all of the cylindrical fluid beds together cover the entire cross-sectional area of ​​the upper adsorption cavity.

[0013] Optionally, the gas diffuser is a split structure, including a base fixed to the partition plate and a filter cartridge detachably mounted on the base.

[0014] Optionally, the base is welded to the partition plate.

[0015] Optionally, a pull rod is fixed on the base, and the pull rod passes through the filter cartridge and is locked by a nut.

[0016] Optionally, the filter cartridge is a cylindrical component made of sintered metal mesh or multilayer metal filter mesh.

[0017] Optionally, the adsorption cylinder includes a cylinder body, a top cover at the top of the cylinder body, and a bottom cover at the bottom of the cylinder body. The air inlet and the air outlet are respectively opened on the bottom cover and the top cover, and the partition plate is fixed inside the bottom cover.

[0018] Optionally, the top end of the partition plate is vertically connected to the dividing plate, and the bottom end is welded and fixed to the bottom cover.

[0019] The adsorption cylinder structure for a desiccant dryer provided by this utility model has at least one of the following beneficial effects:

[0020] 1) By designing a multi-stage distribution and diffusion mechanism of air inlet → gas distribution chamber → gas diffuser, it is possible to force the airflow that enters from the air inlet to be dispersed and evenly distributed to the entire adsorption bed cross section of the upper adsorption chamber, forming multiple uniform "quasi-cylindrical fluid beds", so that all adsorbents can fully contact the airflow, greatly improving the utilization rate of adsorbents and maximizing the improvement of the pressure dew point of compressed gas.

[0021] 2) Due to the more thorough and complete adsorption process, the moisture content of the outlet compressed air is extremely low and stable, which can effectively achieve and maintain a lower pressure dew point;

[0022] 3) The partition plate, the partition plate, and the gas distribution cylinder together form a support base, which directly supports the weight of the entire adsorbent bed above. This structure design, which is similar to radial reinforcing ribs, can evenly transfer the huge weight of the adsorbent to the bottom wall of the adsorption cylinder, thus preventing the partition plate from deforming or being damaged due to excessive force.

[0023] 4) The split design of the diffuser allows the core vulnerable component - the filter cartridge - to be replaced quickly and individually. During maintenance, only the relatively low-cost filter cartridge needs to be replaced, without replacing the entire gas diffuser, which significantly reduces spare parts costs and maintenance costs. Attached Figure Description

[0024] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0025] Figure 1 This is a schematic diagram of the airflow distribution inside the adsorption cylinder in the prior art;

[0026] Figure 2 This is a schematic diagram of the adsorption cylinder structure of a desiccant dryer provided in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a partition plate provided in one embodiment of the present utility model;

[0028] Figures 4-5 This is a schematic diagram of the installation of a gas diffuser on a partition plate according to an embodiment of the present invention.

[0029] Figure 6 for Figure 2 An enlarged schematic diagram of the gas diffuser.

[0030] in:

[0031] 1-Adsorption cylinder; 2-Gas diffuser; 3-Gas flow bed;

[0032] 100-Adsorption cylinder; 110-Cylinder body; 120-Top cover; 121-Outlet; 130-Bottom cover; 131-Inlet; 132-Packaging discharge port; 200-Separator plate; 210-Partition plate; 220-Gas distributor; 221-Gas guide hole; 230-Mounting hole; 300-Gas diffuser; 310-Base; 320-Filter cartridge; 330-Nut; 400-Cylindrical fluidized bed. Detailed Implementation

[0033] To make the objectives, advantages, and features of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are in a very simplified form and use non-precise proportions, intended only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings for a clearer understanding of the objectives, features, and advantages of this utility model. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes and to enable those skilled in the art to understand and read the content disclosed in the specification. They are not intended to limit the implementation conditions of this utility model. Any modifications to the structure, changes in proportions, or adjustments to the size, provided they produce the same or similar effects and achieve the same objectives as this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0034] As used herein, the singular forms “a,” “an,” and “the” include plural objects unless otherwise expressly stated. As used herein, the term “or” is generally used to mean “and / or” unless otherwise expressly stated. As used herein, the term “a number” is generally used to mean “at least one” unless otherwise expressly stated. As used herein, the term “at least two” is generally used to mean “two or more” unless otherwise expressly stated.

[0035] Please refer to Figures 2-5 This utility model embodiment provides an adsorption cylinder structure for an absorbent dryer, comprising:

[0036] The adsorption cylinder 100 has an air inlet 131 and an air outlet 111 at its bottom and top, respectively.

[0037] A partition plate 200 is horizontally set at the bottom of the adsorption cylinder 100 and divides the internal chamber of the adsorption cylinder 100 into an upper adsorption chamber and a lower gas distribution chamber. The upper adsorption chamber is connected to the gas outlet 111 and is filled with adsorbent. The lower gas distribution chamber is connected to the gas inlet 131. Several partition plates 210 are arranged radially at the bottom of the partition plate 200. The partition plates 210 divide the lower gas distribution chamber into multiple independent gas distribution sub-chambers.

[0038] Multiple gas diffusers 300 are installed above the partition plate 200 and are connected to multiple gas distribution sub-cavities.

[0039] By designing a multi-stage distribution and diffusion mechanism from the inlet 131 to the gas distribution chamber and then to the gas diffuser 300, the airflow that enters from the inlet 131 can be forcibly dispersed and evenly distributed across the entire adsorption bed cross-section of the upper adsorption chamber, forming multiple uniform cylindrical fluid beds 400. This ensures that all adsorbents can fully contact the airflow, greatly improving the utilization rate of the adsorbents and maximizing the improvement of the pressure dew point of the compressed gas.

[0040] Please refer to Figures 3-4 A gas distribution cylinder 220 is installed inside the lower gas distribution chamber. The bottom end of the gas distribution cylinder 220 is connected to the air inlet 131, and the top end is vertically connected to the partition plate 200. The gas distribution cylinder 220 is provided with air guide holes 221 that correspond one-to-one with each gas distribution sub-chamber. In this embodiment, the design of the partition plate 200, the partition plate 210, and the gas distribution cylinder 220 has the functions of compressing gas partitioning and supporting the weight of the adsorbent. Four partition plates 210 are arranged radially around the bottom end of the partition plate 200 with the gas distribution cylinder 220 as the center, dividing the entire circular cross-section into four independent fan-shaped areas, i.e., gas distribution sub-chambers. These partition plates 210 forcibly divert the airflow from the gas distribution cylinder 220, ensuring that the gas in each gas distribution sub-cavity can only flow to the corresponding gas diffuser 300 above it. This effectively prevents the airflow from interfering with each other and being unevenly distributed at the bottom. At the same time, the three-stage gas distribution design of gas distribution cylinder 220 → gas distribution sub-cavity → gas diffuser 300 ensures that the contact area between the airflow and the adsorbent is maximized.

[0041] Meanwhile, the upper adsorption chamber is filled with a large amount of particulate adsorbent. The partition plate 200, the partition plate 210, and the gas distribution cylinder 220 together form a support base, which directly supports the weight of the entire adsorbent bed above. This structural design, similar to radial reinforcing ribs, can evenly transfer the huge weight of the adsorbent to the bottom wall of the adsorption cylinder 100, avoiding deformation or damage to the partition plate 200 due to excessive force.

[0042] Preferably, the number of gas diffusers 300 is configured based on the inner diameter of the adsorption cylinder 100, so that the projected outer diameters of the quasi-cylindrical fluid beds 400 formed above adjacent gas diffusers 300 during operation are tangent or partially overlap. The compressed gas passing through the gas diffusers 300 diffuses within the adsorption cylinder 100, forming a quasi-cylindrical fluid bed. In this embodiment, by configuring an appropriate number of gas diffusers 300 based on the inner diameter of the adsorption cylinder 100, the projected outer diameters of the quasi-cylindrical fluid beds 400 formed above adjacent gas diffusers 300 during operation are tangent or partially overlap, thereby maximizing the contact area between the compressed gas and the adsorbent, improving the adsorption efficiency of the adsorbent, and effectively improving the pressure dew point of the compressed gas.

[0043] More preferably, all the cylindrical fluid beds 400 collectively cover the entire cross-sectional area of ​​the adsorption cavity. In this embodiment, combined with Figures 4-5 There are four gas diffusers 300. The installation positions of the four gas diffusers 300 were precisely calculated to achieve seamless coverage of the adsorption chamber cross-section. Ideally, the projected outer diameters of the quasi-cylindrical fluid bed 400 formed by the four gas diffusers 300 are exactly tangent, thus seamlessly covering the entire cross-section of the circular adsorption chamber in the horizontal direction. This is the most efficient layout, avoiding airflow dead zones and preventing excessive overlap between gas fluid beds that would lead to increased pressure drop.

[0044] For preferred options, please refer to [the provided text]. Figure 6 The gas diffuser 300 has a split structure, including a base 310 fixed to the partition plate 200 and a filter cartridge 320 detachably mounted on the base 310. The base 310, as a permanent fixing part, is securely fixed at its lower end to the mounting holes 230 of the partition plate 200 by welding or other methods, providing precise installation positioning and support for the detachable filter cartridge 320. The filter cartridge 320, as a core functional component, uses its precise microporous structure to disperse concentrated airflow into countless tiny, uniform airflow streams, thus forming an ideal near-cylindrical flow bed 400. It also effectively prevents foreign matter from entering the upper adsorbent bed, protecting the adsorbent from contamination. Furthermore, by designing the filter cartridge 320 for detachable mounting, it can be replaced individually when its micropores become clogged or damaged due to long-term use. Maintenance only requires replacing the relatively low-cost filter cartridge 320, without replacing the entire gas diffuser 300, significantly reducing spare parts and maintenance costs.

[0045] In this embodiment, a pull rod is fixed on the base 310. The pull rod passes through the filter cartridge 320 and is locked by a nut 330. The pull rod can be vertically fixed on the base 310. During installation, the filter cartridge 320 can be directly sleeved on the pull rod, and then the top of the filter cartridge 320 is tightened onto the thread of the pull rod by a nut 330, which can firmly press the filter cartridge 320 onto the base 310, making disassembly and assembly convenient.

[0046] In this embodiment, the filter cartridge 320 is a cylindrical component made of sintered metal mesh or multilayer metal filter mesh.

[0047] In this embodiment, the adsorption cylinder 100 includes a cylinder body 110, a top cover 120 located at the top of the cylinder body 110, and a bottom cover 130 located at the bottom of the cylinder body 110. An air inlet 131 and an air outlet 121 are respectively provided on the bottom cover 130 and the top cover 120. A partition plate 200 is fixed inside the bottom cover 130. The cylinder body 110, as the main body of the adsorption cylinder 100, is used to contain the adsorbent. The top cover 120 can be fixed to the top of the cylinder body 110 by means of flanges and bolts, facilitating equipment maintenance and adsorbent filling. It has an air outlet 121. The bottom cover 130 can be fixed to the bottom of the cylinder body 110 by welding or flange connection, and it has an air inlet 131. In this embodiment, the bottom cover 130 also has a packing discharge port 132, used to release the adsorbent packing at its lowest position when replacing the adsorbent packing.

[0048] Preferably, the top end of the partition plate 210 is vertically connected to the partition plate 200, and the bottom end is welded to the bottom cover 130. The top end of the partition plate 210 is fixed to the partition plate 200 by welding, while its bottom end is welded to the inner wall of the bottom cover 130, resulting in greater stability. In actual installation, the partition plate 200, partition plate 210, gas distribution cylinder 220, and gas diffuser 300 can be pre-installed as a module on the bottom cover 130, and then assembled with the cylinder body 110, thereby greatly simplifying the assembly process.

[0049] The working principle of the adsorption cylinder structure of the desiccant dryer provided by this utility model is as follows:

[0050] Compressed air containing water molecules enters the air distributor 220 through the air inlet 131. Figure 2 The compressed air (indicated by the middle arrow) is evenly distributed into four gas distribution chambers. The gas then flows upwards, passing through the filter cartridges 320 of their respective gas diffusers 300. During this process, the airflow is fully dispersed and homogenized by the microporous structure of the filter cartridges 320, transforming from a concentrated airflow into a uniformly rising, circularly shaped, near-cylindrical flow bed 400. These four near-cylindrical flow beds 400 effectively cover the entire bed layer, ensuring sufficient and uniform contact between the compressed air and the adsorbent. Moisture is efficiently adsorbed, and the dried air is discharged from the top outlet 121.

[0051] When the filter cartridge 320 of a gas diffuser 300 becomes clogged or damaged due to long-term use, simply open the top cover 120 of the cylinder 110, unscrew the nut 330 on the top of the gas diffuser 300, and the old filter cartridge 320 can be taken out for replacement. There is no need to weld or disassemble the entire partition plate 200, making maintenance very convenient.

[0052] In summary, this utility model embodiment provides an adsorption cylinder structure for a desiccant dryer. By designing a multi-stage gas distribution and diffusion mechanism, it can force the airflow that enters from the inlet 131 to be dispersed and evenly distributed across the entire cross-section of the upper adsorption chamber, forming multiple uniform cylindrical fluid beds 400. This allows all adsorbents to fully contact the airflow, greatly improving the utilization rate of the adsorbent and maximizing the improvement of the pressure dew point of the compressed gas.

[0053] The above description is merely a description of a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the present utility model. Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the present utility model and its equivalents, the present utility model also intends to include these modifications and variations.

Claims

1. A structure of a sorption cartridge of a sorption dryer, characterized in that, include: The adsorption cylinder has an air inlet at its bottom and an air outlet at its top. A partition plate is horizontally disposed at the bottom end of the adsorption cylinder, dividing the internal chamber of the adsorption cylinder into an upper adsorption chamber and a lower gas distribution chamber. The upper adsorption chamber is connected to the gas outlet and filled with adsorbent, while the lower gas distribution chamber is connected to the gas inlet. Several partition plates are arranged radially at the bottom end of the partition plate, and the partition plates divide the lower gas distribution chamber into multiple independent gas distribution sub-chambers. Multiple gas diffusers are installed above the partition plate and are connected to the multiple gas distribution sub-cavities.

2. The sorption cartridge structure of claim 1, wherein, An air distribution cylinder is provided inside the lower air distribution chamber. The bottom end of the air distribution cylinder is connected to the air inlet, and the top end is vertically connected to the partition plate. The air distribution cylinder is provided with air guide holes that correspond one-to-one with each of the air distribution sub-chambers.

3. The sorption cartridge structure of claim 1, wherein, The number of gas diffusers is configured based on the inner diameter of the adsorption tube, such that the projected outer diameters of the cylindrical fluid bed formed above adjacent gas diffusers when they are in operation are tangent or partially overlap.

4. The sorption cartridge structure of claim 3, wherein, All of the aforementioned cylindrical fluid beds collectively cover the entire cross-sectional area of ​​the upper adsorption cavity.

5. The sorption cartridge structure of claim 1, wherein, The gas diffuser is a split structure, including a base fixed to the partition plate and a filter cartridge detachably mounted on the base.

6. The adsorption cylinder structure of the desiccant dryer according to claim 5, characterized in that, The base is welded to the partition plate.

7. The sorption cartridge structure of claim 5, wherein, A pull rod is fixed on the base, and the pull rod passes through the filter cylinder and is locked by a nut.

8. The sorption cartridge structure of claim 5, wherein, The filter cartridge is a cylindrical component made of sintered metal mesh or multi-layered metal filter mesh.

9. The sorption cartridge structure of claim 1, wherein, The adsorption cylinder includes a cylinder body, a top cover at the top of the cylinder body, and a bottom cover at the bottom of the cylinder body. The air inlet and the air outlet are respectively opened on the bottom cover and the top cover, and the partition plate is fixed inside the bottom cover.

10. The sorption cartridge structure of claim 9, wherein, The top end of the partition plate is vertically connected to the dividing plate, and the bottom end is welded and fixed to the bottom cover.

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