A kind of suction dryer adsorption cylinder barrel structure
Patent Information
- Application Number
- CN202522419586.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-14
AI Technical Summary
[0005]为了解决吸附筒内吸附剂未充分利用的问题，本申请提供一种吸干机吸附筒筒体结构
1.通过分布板和导流锥等设置，导流锥可对从进气口进入的气流进行初步导向，使其流向更合理，而分布板上孔径设计能够进一步对气流进行均匀分散，使气流在筒体内部分布更为均匀，有效避免了局部气流集中或稀疏的情况，解决了传统吸附筒因射流效应导致的气流分布不均问题，让吸附筒内的吸附剂能够得到充分的利用，提升了吸附筒的干燥效果，延长吸附剂的使用寿命；
Smart Images
Figure CN224822130U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of desiccant technology, and in particular to a desiccant adsorption cylinder structure for a desiccant. Background Technology
[0002] Adsorption dryers, or simply adsorption dryers, are key equipment in industrial compressed air post-processing systems. Their function is to remove residual moisture, oil, and fine particles from compressed air through physical adsorption, ensuring that the output air meets high cleanliness and low dew point requirements. In industries sensitive to air quality, such as electronic chip manufacturing, pharmaceutical aseptic packaging, and food spraying and drying, the performance of adsorption dryers directly determines product quality and production stability.
[0003] Traditional desiccant dryers employ a dual-tower alternating operation mode: one adsorption tower captures moisture under high pressure through a filled adsorbent, such as molecular sieve or activated alumina, while the other tower desorbs moisture and regenerates under low pressure by purging gas to dry the air or hot air. Depending on the regeneration method, desiccant dryers can be divided into four main types: heatless regeneration, micro-heat regeneration, blower-heat regeneration, and compression-heat regeneration.
[0004] In related technologies, traditional adsorption cylinders mostly adopt a straight cylindrical structure. After compressed air enters from the bottom of the cylinder, the diameter of the inlet pipe is much smaller than the diameter of the cylinder, forming a jet effect. This causes the gas to flow too fast in the central area of the cylinder and too slow in the edge area. This uneven distribution will cause the adsorbent in the central area to become saturated too early, while the adsorbent in the edge area will not be fully utilized. Therefore, this needs to be improved. Utility Model Content
[0005] To address the issue of insufficient utilization of adsorbent within the adsorption cylinder, this application provides a cylinder structure for an adsorption dryer.
[0006] The adsorption cylinder structure of the desiccant dryer provided in this application adopts the following technical solution: A desiccant structure for a desiccant dryer includes a cylinder body with an air outlet at the top and an air inlet at the bottom. A gas distribution mechanism is located inside the cylinder body, comprising a distribution plate and a guide cone. The guide cone is positioned at the air inlet of the cylinder body, and the distribution plate is located above the guide cone. Multiple through holes are formed on the distribution plate, with the diameter of the through holes gradually increasing from the center region to the edge region.
[0007] Because traditional adsorption cylinders mostly adopt a straight cylindrical structure, compressed air enters from the bottom of the cylinder. Since the diameter of the inlet pipe is much smaller than the diameter of the cylinder, a jet effect is formed, resulting in the gas flow velocity being too fast in the central area of the cylinder and too slow in the edge area. This uneven distribution causes the adsorbent in the central area to become saturated too early, while the adsorbent in the edge area is not fully utilized. By adopting the above technical solution, including the cylinder body, a gas distribution mechanism is installed inside the cylinder body. The gas distribution mechanism includes a distribution plate and a guide cone. Multiple through holes are opened through the distribution plate, and the diameter of the through holes gradually increases from the central area of the distribution plate to the edge area. When compressed air is dried through the adsorption cylinder, the compressed air enters from the inlet at the bottom of the cylinder and first passes through the diffuser. As the cross-sectional area of the diffuser gradually expands along the airflow direction, the flow velocity of the compressed air gradually decreases, and the pressure distribution tends to be uniform, reducing the impact of the airflow on the subsequent structure. After exiting the diffuser, the airflow enters the tip of the guide cone and is guided to the edge area of the distribution plate along the cone surface. After reaching the distribution plate, the airflow passes through the through holes with different pore sizes and densities. The through holes with small pore sizes and high densities in the central area initially disperse and slow down the airflow, while the through holes with large pore sizes and low densities in the edge area allow the airflow to pass smoothly and further diffuse, making the airflow evenly distributed on the entire distribution plate. The evenly distributed airflow continues to rise and encounters the spiral guide vanes above the distribution plate. The spiral guide vanes guide the airflow to spiral upward close to the inner wall of the cylinder, extending the flow path of the airflow in the cylinder and increasing the contact time and contact area between the airflow and the adsorbent, thus achieving effective drying of the compressed air. The dried air is discharged from the outlet at the top of the cylinder. With the addition of a distribution plate and a guide cone, the guide cone initially guides the airflow entering from the inlet, making its flow direction more reasonable. The aperture design on the distribution plate further disperses the airflow evenly, making the airflow distribution inside the cylinder more uniform. This effectively avoids localized airflow concentration or sparseness, solving the problem of uneven airflow distribution caused by the jet effect in traditional adsorption cylinders. This allows the adsorbent inside the adsorption cylinder to be fully utilized, improving the drying effect of the adsorption cylinder and extending the service life of the adsorbent.
[0008] Optionally, the pore density of the through holes on the distribution plate gradually decreases from the central region to the edge region.
[0009] By adopting the above technical solution, the pore density of the through holes on the distribution plate gradually decreases from the central region to the edge region. By setting the pore density of the distribution plate, when the airflow enters the adsorption cylinder, the central region is prone to airflow concentration and high flow velocity due to its proximity to the air inlet. Setting a higher pore density allows a large amount of airflow to be quickly dispersed through the dense through holes, providing initial buffering and flow equalization for the airflow. As the airflow flows towards the edge region, the flow velocity gradually slows down. A lower pore density can prevent excessive airflow dispersion, which would lead to excessively low flow velocity. This ensures that the airflow passes through the distribution plate in a relatively stable and uniform state, effectively improving the airflow distribution in the adsorption cylinder.
[0010] Optionally, a diffuser is provided at the air inlet, the flow cross-sectional area of the diffuser gradually increases along the airflow direction, and the diffuser is connected to the guide cone.
[0011] By adopting the above technical solution, the diffuser is installed at the air inlet; the diffuser allows the high-speed airflow to gradually decrease in velocity and the pressure distribution to become more uniform as it passes through the diffuser, effectively weakening the impact force of the airflow, avoiding damage to the internal structure of the cylinder, and smoothly guiding the stabilized airflow to the guide cone.
[0012] Optionally, the tip of the guide cone is positioned facing and directly opposite the outlet center of the diffuser, and the cone surface of the guide cone is used to guide the airflow from the diffuser to the edge region of the distribution plate.
[0013] By adopting the above technical solution, the tip of the guide cone is oriented towards and directly opposite the outlet center of the diffuser; through the arrangement of the guide cone, the guide cone can effectively receive the airflow, and its tip is directly opposite the outlet center, which can ensure that the airflow directly reaches the key part of the guide cone. The cone surface can cleverly guide the airflow from the diffuser to the edge area of the distribution plate, so that the airflow can be evenly distributed inside the cylinder.
[0014] Optionally, the guide cone is provided with a plurality of support rods for fixing, and the plurality of support rods are respectively connected to the inner wall of the cylinder.
[0015] By adopting the above technical solution, the guide cone is fixed to the inner wall of the cylinder by the support rod. With the support rod, during the operation of the adsorption cylinder, the continuous intake and exhaust of compressed air will generate airflow impact and equipment vibration. The support rod can provide reliable support for the guide cone, ensuring that it remains stable in complex working environments and avoiding airflow turbulence caused by the shaking or displacement of the guide cone.
[0016] Optionally, there is a preset distance between the distribution plate and the top of the guide cone.
[0017] By adopting the above technical solution, there is a preset distance between the top of the distribution plate and the guide cone. By setting the distance between the distribution plate and the guide cone, when the compressed air is guided by the guide cone, it will undergo preliminary buffering and airflow pattern adjustment in the space formed by the preset distance, providing a transition area for uniform airflow diffusion, so that the airflow will not cause a sudden change in local flow velocity due to direct impact on the distribution plate, and further optimizing the distribution state of the airflow in the cylinder.
[0018] Optionally, a spiral guide vane is also provided on the inner wall of the cylinder, and the spiral guide vane is located above the distribution plate.
[0019] By adopting the above technical solution, the spiral guide vane is installed on the inner wall of the cylinder. Through the setting of the spiral guide vane, the spiral guide vane can guide the airflow to form a spiral flow, so that the airflow can rotate and mix fully inside the cylinder, further eliminating possible dead airflow and uneven local flow velocity, allowing the airflow to pass through the entire adsorption area in a stable state, thereby improving the adsorption efficiency.
[0020] Optionally, the spiral guide vane is arranged along the height direction of the cylinder, and the spiral direction of the spiral guide vane is to guide the airflow to spiral upward close to the inner wall of the cylinder.
[0021] By adopting the above technical solution, the spiral guide vane is rotated in a direction that guides the airflow to spiral upward close to the inner wall of the cylinder. The arrangement of the spiral guide vane allows the airflow to spiral forward in an orderly manner along the inner wall of the cylinder, avoiding disorderly and turbulent flow of the airflow in the central area of the cylinder, reducing mutual interference and collision between airflows, and making the adsorption process more complete.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the setting of distribution plate and guide cone, the guide cone can initially guide the airflow entering from the air inlet, making its flow direction more reasonable. The aperture design of the distribution plate can further disperse the airflow evenly, making the airflow more evenly distributed inside the cylinder. This effectively avoids the situation of local airflow concentration or sparseness, solves the problem of uneven airflow distribution caused by jet effect in traditional adsorption cylinders, allows the adsorbent in the adsorption cylinder to be fully utilized, improves the drying effect of the adsorption cylinder, and extends the service life of the adsorbent. 2. By setting up a diffuser, the high-speed airflow can gradually decrease in velocity and the pressure distribution becomes more uniform as it passes through the diffuser. This effectively weakens the impact force of the airflow, avoids damage to the internal structure of the cylinder, and smoothly guides the stabilized airflow to the guide cone. 3. By setting the spiral guide vanes, the spiral guide vanes can guide the airflow to form a spiral flow, so that the airflow can rotate and mix fully inside the cylinder, further eliminating possible dead air zones and uneven local flow velocity, allowing the airflow to pass through the entire adsorption area in a stable state, thus improving the adsorption efficiency. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of the adsorption cylinder of a desiccant dryer according to an embodiment of this application.
[0024] Figure 2 This is a cross-sectional view of the adsorption cylinder structure of a desiccant dryer according to an embodiment of this application.
[0025] Figure 3 This is a partial schematic diagram illustrating the gas distribution mechanism in an embodiment of this application.
[0026] Figure 4 This is a schematic diagram illustrating the structure of the distribution plate in an embodiment of this application.
[0027] Explanation of reference numerals in the attached drawings: 1. Cylinder; 2. Air outlet; 3. Air inlet; 4. Gas distribution mechanism; 41. Distribution plate; 42. Guide cone; 5. Through hole; 6. Diffuser; 7. Support rod; 8. Spiral guide vane. Detailed Implementation
[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0029] This application discloses a structure for the adsorption cylinder of an absorbent dryer. (Refer to...) Figure 1 and Figure 2 The adsorption cylinder structure of the desiccant dryer includes a cylinder body 1. In this embodiment, an adsorbent module is installed inside the cylinder body 1. The adsorbent module is used to remove moisture from the humid air for drying. An air outlet 2 and an air inlet 3 are formed at the top and bottom of the cylinder body 1, respectively, so that compressed air enters from the bottom of the cylinder body 1 and exits from the top.
[0030] Reference Figure 2 and Figure 3 A diffuser 6 is installed at the air inlet 3. The cross-sectional area of the diffuser 6 gradually expands along the airflow direction, which enables the high-speed airflow to gradually decrease in velocity and the pressure distribution to become more uniform as it passes through the diffuser 6. This effectively weakens the impact force of the airflow, avoids damage to the internal structure of the cylinder 1, and smoothly guides the stabilized airflow into the interior.
[0031] Reference Figure 2A gas distribution mechanism 4 is installed inside the cylinder 1. The gas distribution mechanism 4 includes a distribution plate 41 and a guide cone 42. The guide cone 42 is arranged at the air inlet 3 of the cylinder 1. The tip of the guide cone 42 is set towards and directly opposite the outlet center of the diffuser 6. The cone surface of the guide cone 42 is used to guide the airflow from the diffuser 6 to the edge area of the distribution plate 41. The distribution plate 41 is located above the guide cone 42. The guide cone 42 can effectively receive the airflow. Its tip is directly opposite the outlet center, which can ensure that the airflow goes directly to the key part of the guide cone 42. The cone surface can cleverly guide the airflow from the diffuser 6 to the edge area of the distribution plate 41, so that the airflow can be evenly distributed inside the cylinder 1.
[0032] Reference Figure 2 and Figure 3 Several support rods 7 are installed on the guide cone 42, and the support rods 7 are respectively connected to the inner wall of the cylinder 1. During the operation of the adsorption cylinder, the continuous entry and exit of compressed air will generate airflow impact and equipment vibration. The support rods 7 can provide reliable support for the guide cone 42, ensuring that it remains stable in the complex working environment and avoiding airflow turbulence caused by the shaking or displacement of the guide cone 42.
[0033] Reference Figure 2 and Figure 3 There is a preset gap between the top of the distribution plate 41 and the top of the guide cone 42. When the compressed air is guided by the guide cone 42, it will undergo preliminary buffering and airflow pattern adjustment in the space formed by the preset gap, providing a transition area for uniform airflow diffusion, so that the airflow will not cause a sudden change in local flow velocity due to direct impact on the distribution plate 41, and further optimizing the distribution state of the airflow in the cylinder 1.
[0034] Reference Figure 2 and Figure 4 The distribution plate 41 has multiple through holes 5. The diameter of the through holes 5 gradually increases from the center area to the edge area of the distribution plate 41, while the pore density of the through holes 5 on the distribution plate 41 gradually decreases from the center area to the edge area. When the airflow enters the adsorption cylinder, the central area is prone to airflow concentration and high flow velocity due to its proximity to the air inlet 3. Setting a higher pore density can enable a large amount of airflow to be quickly dispersed through the dense through holes 5, which provides initial buffering and uniform flow of the airflow. As the airflow flows towards the edge area, the flow velocity gradually slows down. The lower pore density can prevent the airflow from being excessively dispersed, resulting in a low flow velocity. This ensures that the airflow passes through the distribution plate 41 in a relatively stable and uniform state, effectively improving the distribution of the airflow in the adsorption cylinder.
[0035] Reference Figure 2A spiral guide vane 8 is also installed on the inner wall of the cylinder 1. The spiral guide vane 8 is located above the distribution plate 41 and is arranged along the height direction of the cylinder 1. The spiral guide vane 8 is rotated in a spiral direction to guide the airflow to rise spirally along the inner wall of the cylinder 1. In this embodiment, the spiral guide vane 8 is embedded in the inner wall of the cylinder 1 and does not affect the installation and use of the desiccant module. The spiral guide vane 8 can guide the airflow to form a spiral flow, so that the airflow can rotate and mix fully inside the cylinder 1, further eliminating possible dead airflow angles and uneven local flow velocity, allowing the airflow to pass through the entire adsorption area in a stable state, thereby improving the adsorption efficiency.
[0036] The implementation principle of the adsorption cylinder structure of the adsorption dryer in this application embodiment is as follows: When compressed air is dried through the adsorption cylinder, the compressed air enters from the air inlet 3 at the bottom of the cylinder 1, and first passes through the diffuser 6. As the flow cross-sectional area of the diffuser 6 gradually expands along the airflow direction, the flow velocity of the compressed air gradually decreases, and the pressure distribution tends to be uniform, reducing the impact of the airflow on the subsequent structure. After the airflow exits from the diffuser 6, it enters the tip of the guide cone 42 and is guided along the conical surface of the guide cone 42 to the edge area of the distribution plate 41. After the airflow reaches the distribution plate 41, it passes through the different pore sizes and pore densities on the distribution plate 41. The through holes 5, with small diameter and high density in the central area, initially disperse and slow down the airflow, while the through holes 5 with large diameter and low density in the edge area allow the airflow to pass smoothly and further diffuse, so that the airflow is evenly distributed on the entire distribution plate 41. After being evenly distributed, the airflow continues to rise and encounters the spiral guide plate 8 above the distribution plate 41. The spiral guide plate 8 guides the airflow to spiral upward close to the inner wall of the cylinder 1, which prolongs the flow path of the airflow in the cylinder 1, increases the contact time and contact area between the airflow and the adsorbent, and achieves effective drying of the compressed air. The dried air is discharged from the air outlet 2 at the top of the cylinder 1. With the distribution plate 41 and the guide cone 42, the guide cone 42 can initially guide the airflow entering from the air inlet 3, making its flow direction more reasonable. The aperture design on the distribution plate 41 can further disperse the airflow evenly, making the airflow distribution inside the cylinder 1 more uniform. This effectively avoids the situation of local airflow concentration or sparseness, solves the problem of uneven airflow distribution caused by the jet effect in traditional adsorption cylinders, allows the adsorbent in the adsorption cylinder to be fully utilized, improves the drying effect of the adsorption cylinder, and extends the service life of the adsorbent.
[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A structure for an adsorption cylinder of a desiccant dryer, characterized in that: The device includes a cylinder with an air outlet at the top and an air inlet at the bottom. A gas distribution mechanism is provided inside the cylinder, which includes a distribution plate and a guide cone. The guide cone is located at the air inlet of the cylinder, and the distribution plate is located above the guide cone. Multiple through holes are provided on the distribution plate, and the diameter of the through holes gradually increases from the center area to the edge area of the distribution plate.
2. The adsorption cylinder structure of a desiccant dryer according to claim 1, characterized in that: The pore density of the through holes on the distribution plate gradually decreases from the central region to the edge region.
3. The adsorption cylinder structure of a desiccant dryer according to claim 1, characterized in that: A diffuser is provided at the air inlet, and the flow cross-sectional area of the diffuser gradually increases along the airflow direction. The diffuser is connected to the guide cone.
4. The adsorption cylinder structure of a desiccant dryer according to claim 3, characterized in that: The tip of the guide cone is positioned facing and directly opposite the outlet center of the diffuser, and the cone surface of the guide cone is used to guide the airflow from the diffuser to the edge region of the distribution plate.
5. The adsorption cylinder structure of a desiccant dryer according to claim 1, characterized in that: The guide cone is provided with several support rods for fixing, and the support rods are respectively connected to the inner wall of the cylinder.
6. The adsorption cylinder structure of a desiccant dryer according to claim 5, characterized in that: There is a preset distance between the distribution plate and the top of the guide cone.
7. The adsorption cylinder structure of a desiccant dryer according to claim 1, characterized in that: The inner wall of the cylinder is also provided with a spiral guide vane, which is located above the distribution plate.
8. The adsorption cylinder structure of a desiccant dryer according to claim 7, characterized in that: The spiral guide vanes are arranged along the height of the cylinder, and the spiral direction of the spiral guide vanes is to guide the airflow to spiral upward close to the inner wall of the cylinder.