Sealing structure of adsorption dehumidification rotary wheel

Abstract

The utility model discloses a kind of adsorption type dehumidification runner sealing structure, including structural frame and dehumidification runner;Sealing unit is arranged between the both ends of dehumidification runner and the structural frame;The sealing unit includes the outer ring flange of the outer periphery of dehumidification runner and the sealing ring of the structural frame;The cross-sectional shape of the sealing ring is Y type formed by three lips;One of the Y type the lip is set on the structural frame, and the other two lips are abutted with adjacent outer ring flange.The elastic force direction of sealing ring is along the axial direction of dehumidification runner, can bear greater air pressure.Under the premise of not increasing the friction resistance of sealing strip, reduce the leakage of air, improve the sealing performance of dehumidification runner;Compression intensity is smaller, and the rotation resistance of dehumidification runner is smaller, due to the self-lubricating characteristics of fluorine like glue, the friction resistance of this sealing structure has obvious reduction, hollow layer can isolate heat conduction, dry and wet air has no leakage.

Description

Technical Field

[0001] This utility model belongs to the field of rotary dehumidification technology, and in particular relates to an adsorption-type dehumidification rotary sealing structure. Background Technology

[0002] The dehumidifying rotor is the most critical core component of a rotary dehumidifier. During dehumidification, it uses a sealing strip to isolate dry and humid air. The air inside the treatment side is very dry, while the air outside the treatment side and the regeneration side is highly humid. Therefore, it is essential to seal off the humid air. The better the seal, the higher the dehumidification efficiency and the better the dehumidification performance. During dehumidification, the dehumidifying rotor rotates slowly at a speed of 4-15 rpm, which presents a challenge to securing the sealing strip.

[0003] Currently, the dehumidifier industry commonly uses two types of seals: scraper-type seals and arc-surface friction structures. The scraper-type seal structure improves wear resistance and reduces frictional resistance by bonding a 0.18mm thick polytetrafluoroethylene (PTFE) film to a flat, high-temperature resistant silicone rubber strip. The sealing strip is then fixed to the circumference of the rotor using steel plates and screws. The sealing strip is bent at a right angle from the flat strip. Through the rebound stress of the bent sealing strip, the PTFE surface of the sealing strip adheres tightly to the rotor frame plane, thus isolating the high-humidity air from the dry air. The advantages of this sealing structure are very low frictional resistance in the rotor drive, low cost, and easy maintenance and replacement. The disadvantages are that overlapping of the sealing strip corners is difficult to handle, resulting in poor sealing performance; and under high air pressure, the rebound stress of the sealing strip cannot be overcome, leading to leakage.

[0004] Chinese patent document CN219796095U discloses a rotary dehumidifier sealing structure. A PTFE sealing ring on the rotary wheel side is fixed to the outer periphery of the rotary wheel side flange. The PTFE sealing ring extends beyond the rotary wheel side flange in the thickness direction of the rotary wheel, overlapping with the PTFE sealing ring on the chassis side in the thickness direction of the rotary wheel to form a sealing area. A cylindrical spring ring includes a connected spring portion and a pressing portion in the height direction. The spring portion has a strip-shaped cross-section, and the pressing portion has an annular cross-section. The spring portion is positioned corresponding to the outer periphery of the rotary wheel side flange. A rotary wheel side fastening clamp is positioned corresponding to the spring portion, fixing the spring ring to the rotary wheel side flange. The spring portion elastically presses the pressing portion towards the sealing area, generating elastic force in the spring ring, thus ensuring the sealing effect at the sealing area.

[0005] In the aforementioned patented solution, the sealing effect is primarily determined by the elasticity of the elastic part. However, since the elasticity of the elastic part is arranged radially along the dehumidifying impeller, it is prone to outward elastic deformation under high air pressure. This can create gaps between the elastic part and the casing flange, leading to sealing failure. Over time, the rebound stress of the elastic part will gradually decrease, further reducing the sealing effect. While increasing the elasticity of the elastic part can improve the sealing effect, it also increases the rotational resistance of the dehumidifying impeller, accelerating wear on the contact points and reducing the service life of the sealing components. Utility Model Content

[0006] To overcome the shortcomings of existing technologies where the elasticity of the desiccant is too low, resulting in poor sealing, while high elasticity not only increases the rotational resistance of the dehumidifying rotor but also reduces the service life of the sealing components, this invention aims to provide an adsorption-type desiccant rotor sealing structure. This structure utilizes a Y-shaped sealing ring between the desiccant rotor and the structural frame. The sealing ring's elastic force is directed along the axial direction of the desiccant rotor. Increased air pressure only improves the sealing effect without causing deformation or failure of the sealing ring. The sealing ring can withstand higher air pressure without increasing the frictional resistance of the desiccant rotor.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: an adsorption-type dehumidification rotor sealing structure, comprising a structural frame and a dehumidification rotor rotatably connected within the structural frame; a sealing unit is provided between the two ends of the dehumidification rotor and the structural frame; the sealing unit includes an outer ring flange disposed on the outer circumference of the dehumidification rotor and a sealing ring disposed on the structural frame; wherein, the sealing ring is coaxial with and directly opposite the outer ring flange; the cross-sectional shape of the sealing ring is a Y-shape composed of three lips; one lip of the Y-shape is disposed on the structural frame, and the other two lips abut against the adjacent outer ring flange.

[0008] Furthermore, an elastic deformation zone is generated on the lip that abuts against the outer flange; the volume of the elastic deformation zone accounts for 40%-60% of the corresponding volume of the lip; the contact area between the sealing ring and the outer flange is larger, resulting in a better sealing effect.

[0009] Furthermore, there are gaps between the two ends of the dehumidifying rotor and the structural frame; the intersection of the three lips is located in the middle of the gap.

[0010] Furthermore, a cavity is formed between the two lips that abut against the outer ring flange and the adjacent outer ring flange; the cavity can effectively isolate heat transfer and help the air to carry out effective heat exchange in the dehumidifier.

[0011] Furthermore, the sealing ring is formed by bonding a sealing strip end to end with silicone sealant; the sealing strip is formed by thermoplastic extrusion of a fluorine-containing adhesive.

[0012] Furthermore, the sum of the thicknesses of the two lips that abut against the outer flange is equal to the thickness of the other lip.

[0013] Furthermore, an annular ring is provided on the structural frame; the sealing ring is pressed tightly against the outer periphery of the annular ring by a clamp.

[0014] Furthermore, the cross-sectional shape of the outer flange is L-shaped; wherein, one side of the L-shape is located on the outer periphery of the dehumidifying impeller, and the length of the other side is equal to the distance between the ends of the two adjacent lips.

[0015] Preferably, the included angle between the two lips that abut against the outer flange is 120°.

[0016] Preferably, the length of the lip that abuts against the outer flange is less than or equal to 0.6 times the length of the other lip and greater than or equal to 0.5 times the length of the other lip.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. The present invention features a Y-shaped sealing ring between the structural frame and the dehumidifying impeller. The elastic force of the sealing ring is along the axial direction of the dehumidifying impeller. As the air pressure increases, the corresponding lip will deform towards the outer flange, resulting in a tighter seal without causing the seal to fail. Therefore, it can withstand greater air pressure.

[0019] 2. This utility model's sealing ring and dehumidifying wheel (i.e., outer flange) reduce air leakage and improve the sealing performance of the dehumidifying wheel while meeting sealing requirements and without increasing the frictional resistance of the sealing strip; the clamping force is smaller, the rotational resistance of the dehumidifying wheel is smaller, and the service life of the sealing ring and corresponding sealing components is longer.

[0020] 3. This utility model directly mixes fluorine material into the rubber raw material, instead of setting a fluorine coating on the outer surface of the rubber. Due to the self-lubricating properties of fluorine rubber, the frictional resistance of this sealing structure is significantly reduced, the wear resistance is stronger, the sealing surface is larger, the sealing performance of the dehumidification wheel regeneration zone is better, and the hollow layer can isolate heat conduction, so there is no leakage of dry and humid air. Attached Figure Description

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

[0022] Figure 2This is a schematic diagram of the cross-sectional shape of the sealing ring of this utility model.

[0023] In the diagram: 1. Dehumidifying impeller; 2. Structural frame; 21. Annular ring; 3. Outer flange; 4. Clamp; 5. Sealing ring; 51. Lip; 511. Elastic deformation zone; 6. Gap; 7. Cavity. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In this description of the utility model, "a number" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, terms such as "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] See Figures 1-2An adsorption-type dehumidification rotor sealing structure includes a structural frame 2 and a dehumidification rotor 1 rotatably connected within the structural frame 2; a sealing unit is provided between the two ends of the dehumidification rotor 1 and the structural frame 2; the sealing unit includes an outer ring flange 3 disposed on the outer periphery of the dehumidification rotor 1 and a sealing ring 5 disposed on the structural frame 2; the sealing ring 5 is coaxial with and directly opposite the outer ring flange 3; the cross-sectional shape of the sealing ring 5 is a Y-shape composed of three lips 51; one lip 51 of the Y-shape is disposed on the structural frame 2, and the other two lips 51 abut against the adjacent outer ring flange 3.

[0029] The structural frame 2 is provided with an annular ring 21; the sealing ring 5 is pressed tightly to the outer periphery of the annular ring 21 by a clamp 4; the sealing ring 5 is formed by bonding a sealing strip end to end with silicone sealant; the sealing strip is formed by thermoplastic extrusion of a fluorinated rubber material.

[0030] The dehumidifying impeller 1 has gaps 6 between its two ends and the structural frame 2; the intersection of the three lips 51 is located in the middle of the gaps 6. A cavity 7 is formed between the two lips 51 that abut against the outer ring flange 3 and the adjacent outer ring flange 3.

[0031] The outer flange 3 has an L-shaped cross-section; one side of the L-shape is located on the outer periphery of the dehumidifying rotor 1, and the length of the other side is equal to the distance between the ends of the two adjacent lips 51.

[0032] The lip 51 that abuts against the outer flange 3 forms an elastic deformation zone 511; the volume of the elastic deformation zone 511 accounts for 40%-60% of the volume of the corresponding lip 51. The sum of the thicknesses of the two lips 51 that abut against the outer flange 3 is equal to the thickness of the other lip 51. The included angle between the two lips 51 that abut against the outer flange 3 is 120°. The length of the lip 51 that abuts against the outer flange 3 is less than or equal to 0.6 times the length of the other lip 51 and greater than or equal to 0.5 times the length of the other lip 51.

[0033] Specifically, a Y-shaped sealing strip is formed by thermoplastic extrusion of fluorinated rubber. The lip of the sealing strip, which is fixed to the annular ring 21 of the sheet metal structure, has a thickness of 4mm, while the other two lips are 2mm thick and form a 120° angle. The 4mm thick lip of the Y-shaped sealing strip is used to fix it to the circumference of the annular ring 21 on the structural frame 2 and to provide a certain sealing support for the other two sides. The Y-shaped sealing strip is fixed by a clamp 4, and the circumferential joint of the sealing strip is bonded with silicone sealant. The other two 2mm thick lips are deformed by stress extrusion and then flattened against the sheet metal plane of the outer flange 3 on the outer circumference of the dehumidifying wheel 1.

[0034] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. An adsorption-type dehumidification rotary sealing structure, characterized in that: The device includes a structural frame and a dehumidifying impeller rotatably connected within the structural frame. Sealing units are provided between the two ends of the dehumidifying impeller and the structural frame. Each sealing unit includes an outer flange disposed on the outer circumference of the dehumidifying impeller and a sealing ring disposed on the structural frame. The sealing ring is coaxial with and directly opposite the outer flange. The sealing ring has a Y-shaped cross-section composed of three lips. One lip of the Y-shape is disposed on the structural frame, and the other two lips abut against the adjacent outer flange.

2. The sealing structure as described in claim 1, characterized in that: An elastic deformation zone is generated on the lip that abuts against the outer flange; the volume of the elastic deformation zone accounts for 40%-60% of the corresponding volume of the lip.

3. The sealing structure as described in any one of claims 1-2, characterized in that: There are gaps between the two ends of the dehumidifying rotor and the structural frame; the intersection of the three lips is located in the middle of the gap.

4. The sealing structure as described in any one of claims 1-2, characterized in that: A cavity is formed between the two lips that abut against the outer ring flange and the adjacent outer ring flange.

5. The sealing structure as described in any one of claims 1-2, characterized in that: The sealing ring is formed by bonding a sealing strip end to end with silicone sealant; the sealing strip is formed by thermoplastic extrusion of a fluorinated rubber material.

6. The sealing structure as described in any one of claims 1-2, characterized in that: The sum of the thicknesses of the two lips that abut against the outer flange is equal to the thickness of the other lip.

7. The sealing structure as described in any one of claims 1-2, characterized in that: An annular ring is provided on the structural frame; the sealing ring is pressed tightly against the outer circumference of the annular ring by a clamp.

8. The sealing structure as described in any one of claims 1-2, characterized in that: The outer flange has an L-shaped cross-section; one side of the L-shape is located on the outer periphery of the dehumidifying impeller, and the length of the other side is equal to the distance between the ends of the two adjacent lips.

9. The sealing structure as described in any one of claims 1-2, characterized in that: The included angle between the two lips that abut against the outer flange is 120°.

10. The sealing structure as described in any one of claims 1-2, characterized in that: The length of the lip that abuts against the outer flange is less than or equal to 0.6 times the length of the other lip and greater than or equal to 0.5 times the length of the other lip.

Images