Integrated air suspension air supply system dryer

Abstract

The utility model relates to an integrated air suspension gas supply system dryer, the dryer is connected with the air pump in the gas supply system, the dryer is integrated with air pump export check valve, expansion cavity and drying barrel in the inside, the expansion cavity is arranged between air pump export check valve and drying barrel, and air passes through the air outlet of air pump export check valve and circulates to the expansion cavity, then enters the drying barrel and is discharged after drying, the drying barrel is filled with drying agent for drying air, the dryer is provided with one -way air outlet channel and regeneration channel, one -way air outlet channel and regeneration channel all communicate with the drying barrel, compared with prior art, the utility model realizes three functions of gas drying, airflow noise reduction and drying agent regeneration at the same time through the simple structure design of the dryer, and reaches the purpose that system reliability is promoted.

Description

Technical Field

[0001] This utility model belongs to the technical field of air supply system dryers, specifically relating to an integrated air suspension air supply system dryer. Background Technology

[0002] Air suspension systems, as a crucial component of modern automotive chassis technology, are widely used in high-end passenger vehicles, commercial vehicles, and special-purpose vehicles due to their superior comfort, handling, and adjustability. Their core working principle involves replacing traditional mechanical springs with air springs, utilizing the elastic properties of compressed air to achieve vehicle height adjustment and vibration damping. Within this system, the air supply system plays a critical role, encompassing multiple functions including air compression, drying, storage, and pressure regulation. Among these, the dryer, as the core component of the air supply system, directly affects the system's reliability, durability, and environmental adaptability.

[0003] Moisture in compressed air is a problem that air suspension systems need to address. Air pumps typically draw in water vapor from the outside. When compressed air cools in the pipeline, this moisture condenses into a liquid state. In winter, this moisture can freeze, causing valve jamming or pipeline blockage. Moisture can also cause metal parts to rust and corrode. Therefore, the core task of a dryer is to remove moisture from compressed air through adsorption or condensation, ensuring that the dew point temperature of the output air is below the system's minimum operating temperature.

[0004] Traditional dryers often employ an independent modular design, including components such as an air pump outlet check valve, a muffler, a drying cylinder, and a regeneration channel. The drawbacks of this design are: the separate installation of multiple components results in a large system size, conflicting with the compact chassis layout requirements of vehicles; complex piping connections increase the risk of leaks; and the desiccant regeneration efficiency is low, requiring external air sources or complex control valve assemblies for routine regeneration, increasing energy consumption and limiting response speed.

[0005] Patent CN115532029A discloses an automotive air suspension dryer based on impedance detection, comprising a dryer housing, a desiccant, embedded electrodes, and a detection circuit. The desiccant is placed inside the housing, which has an air inlet and an air outlet. The embedded electrodes are divided into embedded positive and embedded negative electrodes, which are embedded in the desiccant and located at the air inlet and air outlet, respectively. The embedded positive and negative electrodes are electrically connected to the detection circuit. However, while embedding the electrodes in the desiccant facilitates the control of desiccant regeneration timing, this patent complicates the dryer structure and increases manufacturing costs.

[0006] Patent CN102309907A discloses an air dryer (D) for a vehicle air suspension, comprising: a housing (10) having an inlet (11) and an outlet (12) formed at a first end and a second end in the axial direction; a first filter (21) and a second filter (22) housed within the housing (10); a desiccant (30) supported between the first filter (21) and the second filter (22); and an air guide (40) disposed between the first filter (21) and the second filter (22). The housing (10) includes a cylindrical portion (41) and an annular plate (42) with multiple holes (H) between its first ends. The cylindrical portion (41) axially shields the inlet (11) to form a flow path (P) that guides fluid (Aw) from the inlet (11) to the first filter (21). The fluid (Aw) introduced from the inlet (11) flows through the flow path (P) and the first filter (21) into the desiccant (30), thereby drying the fluid. Dry air (Ad) is discharged from the outlet (12) to the air suspension. This patent does not mention the design of a desiccant regeneration channel or regeneration airflow path, and relies solely on unidirectional flow to complete the drying. It cannot desorb moisture through reverse airflow, and the desiccant is prone to saturation failure. Furthermore, it does not integrate an expansion cavity or a sound-absorbing structure, resulting in weak noise control capabilities.

[0007] Patent CN115155261A discloses a split-type dryer for a vehicle air suspension air supply system, comprising a housing with a cavity inside; a desiccant disposed within the cavity, with breathable clamping elements at both ends of the desiccant, the first end of the desiccant being positioned close to the first end of the housing; an end cap installed within the second end of the housing; an elastic element disposed between the end cap and the breathable clamping element at the second end of the desiccant; a first air nozzle disposed on the outer wall of the housing corresponding to the elastic element or on the end cap, the first air nozzle being connected to the exhaust port of the air supply system valve body via a first air pipe; and a second air nozzle installed at the first end of the housing, the second air nozzle being connected to the air inlet of the air supply system valve body via a second air pipe. However, this patent suffers from noise issues due to its split-type architecture, and the first and second air pipes are external pipelines, which complicate the dryer's structure.

[0008] Therefore, current air suspension air supply systems still need to address the issues of high air pump integration and complex structure, as well as the single function and large space occupation of the dryer. Utility Model Content

[0009] (a) Technical problems to be solved The purpose of this utility model is to provide an integrated air suspension air supply system dryer to solve at least one of the above-mentioned problems, so as to solve the problems of low integration of air pumps, complex structure, single function of dryer and large space occupation in the prior art. Through the simple structural design of the dryer, the functions of gas drying, airflow noise reduction and desiccant regeneration are achieved, while improving the system reliability.

[0010] (II) Technical Solution The objective of this utility model is achieved through the following technical solution: This utility model discloses an integrated air suspension air supply system dryer, wherein the dryer is connected to the air pump in the air supply system; the dryer integrates an air pump outlet check valve, an expansion chamber and a drying barrel; The expansion chamber is located between the air pump outlet check valve and the drying barrel. Air flows through the outlet of the air pump outlet check valve into the expansion chamber, then enters the drying barrel for drying and is discharged. The drying drum is filled with desiccant for drying the air; The dryer is equipped with a one-way air outlet channel and a regeneration channel, both of which are connected to the drying barrel. The one-way air outlet channel is closed when the dryer is not in operation.

[0011] Furthermore, the dryer is installed at the top of the piston of the air pump body.

[0012] Furthermore, the air pump outlet check valve includes a valve core, an elastic structural component, and a ring valve core ring, wherein the elastic structural component connects the valve core and the dryer; and the ring valve core ring is disposed on the outer ring of the valve core. One or more one-way valve outlets are provided on the ring valve core ring.

[0013] When the ring valve core is in contact with the valve core, the air pump outlet check valve is in a sealed state.

[0014] Furthermore, when the air pump discharges air through the one-way valve at the air pump outlet, the elastic structural component undergoes elastic deformation towards the dryer, the valve core moves towards the dryer, and the air enters the expansion chamber through the one-way valve outlet of the ring valve core ring.

[0015] Furthermore, the expansion chamber is located between the dryer and the air pump, and an expansion chamber sealing ring is provided on the outer ring of the expansion chamber, so that the expansion chamber only receives air through the one-way valve at the outlet of the air pump.

[0016] Furthermore, the expansion chamber is located between the air pump and the drying barrel, and the air pump is provided with an air outlet for the expansion chamber; The low-pressure airflow enters the drying chamber through the regeneration channel to regenerate the desiccant. The regenerated humid airflow then enters the expansion chamber after passing through the drying chamber and is finally discharged through the air outlet. This process removes the moisture adsorbed by the dry air from the desiccant, thus regenerating the desiccant.

[0017] Furthermore, the expansion chamber utilizes the space between multiple drying barrels to form an expansion chamber, effectively reducing aerodynamic noise during drying and regeneration.

[0018] Furthermore, the unidirectional air outlet has a large outlet with a wedge-shaped structure, the diameter of which gradually increases outwards, and a sealing element is provided at the end of the large outlet; the diameter of the sealing element is larger than the inner diameter of the large outlet; the sealing element is confined between the dryer and the air pump.

[0019] The one-way air outlet channel and the one-way valve at the air pump outlet make the dryer act as a one-way throttle valve for the air pump.

[0020] Furthermore, when the low-pressure airflow is regenerated through the regeneration channel, the seal seals the large opening of the one-way air outlet channel.

[0021] Furthermore, the sealing element is an elastic sphere, and the diameter of the sealing element is 1.2-1.5 times the minimum aperture of the large channel opening.

[0022] Furthermore, the valve core is made of an elastic material, specifically either hydrogenated nitrile butadiene rubber (HNBR) or fluorosilicone rubber.

[0023] Furthermore, the valve core is made of hydrogenated nitrile rubber, which has good sealing performance, does not rust, and has low noise.

[0024] Furthermore, the sealing element is made of a lightweight material.

[0025] Furthermore, the regeneration channel has a small channel opening, and the large channel opening has a larger diameter than the small channel opening.

[0026] When supplying gas, the airflow goes through a one-way outlet channel with low flow resistance. During regeneration, the one-way outlet channel is sealed by a seal, and the airflow goes through the regeneration channel, which is throttled and facilitates regeneration.

[0027] Furthermore, desiccant in the drying barrel is provided with desiccant limiting members at both ends, and the other side of the desiccant limiting member is connected to the inside of the drying barrel through a desiccant clamping member; the expansion cavity is connected to the drying barrel through an air channel; The filter element is attached to the side of the desiccant limiting component near the desiccant.

[0028] Furthermore, the desiccant limiting component is a circular limiting piece with multiple through holes in the center. The diameter of the through holes in the desiccant limiting component is smaller than the particle size of the desiccant, which is used to limit the desiccant in the drying barrel and prevent the desiccant from leaking out through the air channel connected to the drying barrel and affecting the normal operation of the air pump.

[0029] Furthermore, the desiccant clamping component is configured as a spring with its two ends connected to the desiccant limiting component and the inner side of the drying barrel, respectively. Its function is to fix the relative position of the desiccant in the drying barrel, prevent the desiccant from rubbing against each other during the drying or regeneration process and aging or generating dust, thereby affecting the drying effect and extending the service life of the drying barrel.

[0030] Furthermore, the filter element includes a filter screen, a filter membrane, and a filter film. The function of the filter element is to filter the dust formed after the desiccant is pulverized, and to prevent the dust from entering the air suspension supply system and affecting its operation.

[0031] Furthermore, the desiccant is silica gel desiccant.

[0032] Furthermore, the number of drying barrels can be one or more; when the number of drying barrels is multiple, the multiple drying barrels are interconnected.

[0033] Furthermore, the plurality of drying drums are connected in parallel or in series; When the multiple drying barrels are connected in parallel, the expansion chamber is connected to the multiple drying barrels through multiple air channels, and the multiple drying barrels are connected to the one-way air outlet channel and the regeneration channel, respectively. When the multiple drying barrels are connected in series, each drying barrel is connected to the others. The expansion chamber is connected to one of the drying barrels through an air channel. The drying barrel located at the end of the air flow is connected to the one-way air outlet channel and the regeneration channel.

[0034] Furthermore, the air in the air pump first enters the space between the air pump and the air pump outlet check valve, then enters the expansion chamber through the check valve outlet, and then enters the drying barrel to be dried by the desiccant. The dried air is then blown out through the one-way outlet channel, which pushes open the seal.

[0035] This utility model achieves the triple functions of gas drying, noise reduction, and desiccant regeneration in a simple structure by using a unidirectional air outlet channel, a regeneration channel, and a variable cross-sectional area of ​​the air duct. At the same time, this simple structure reduces many structures and connections in conventional designs, thereby improving the reliability of the system.

[0036] During drying, the airflow enters the expansion chamber of the dryer from the one-way valve at the air pump outlet, and then enters the drying barrel through the air channel, forming a small channel-cavity-small channel structure; during desiccant regeneration, the airflow enters the drying barrel from the regeneration channel, and then enters the expansion chamber through the air channel, similarly forming a small channel-cavity-small channel structure; this structure is conducive to the sound being reflected, superimposed, and integrated together to achieve the purpose of noise reduction.

[0037] When airflow passes through the small channel-cavity-small channel structure, the sound wave first enters the narrow small channel, where the sound wave energy is compressed, and some of the sound energy is converted into heat energy. When it re-enters the cavity through the small channel, part of the sound wave is reflected back into the small channel, stopping its forward propagation. At the same time, the cavity resonates with the sound wave, converting the sound energy into heat energy again. The sound wave propagates between the small channel-cavity-small channel, undergoing multiple reflections to form sound waves along different paths. After these waves are superimposed, their amplitude decreases or even returns to zero, thus achieving the purpose of noise reduction.

[0038] (III) Beneficial Effects Compared with the prior art, the present invention has the following advantages: (1) High integration and high reliability: The dryer of this utility model is set in the air suspension air supply system. While drying the air, it integrates the air pump outlet check valve connected to the air pump, the expansion chamber for noise reduction, and the drying barrel regeneration device. This makes the utility model integrate multiple functional components and structures while having the drying function of the drying barrel. It has multiple functions and forms a modular and compact design. Since each module is directly connected through the internal channel, the connecting parts of the traditional split design are eliminated. The sealing structure at each connection point keeps each structure sealed. The structure is compact, reduces assembly complexity and leakage risk, and has high reliability.

[0039] (2) Drying and desiccant regeneration function: The dryer of this utility model is equipped with desiccant for drying air. During drying, the high-pressure airflow pushes open the seal and finally outputs dry air through the one-way air outlet channel. At the same time, this utility model has a desiccant regeneration function. During desiccant regeneration, the low-pressure airflow passes through the regeneration channel, and the seal closes the large channel opening due to the pressure difference. Therefore, this utility model can rely on the system's own pressure change to control the opening and closing of the channel without the need for solenoid valves or sensors. Through the self-sealing structure of the regeneration channel and the air outlet channel, the switching between regeneration and drying can be realized.

[0040] (3) Airflow noise reduction: This utility model achieves the purpose of reducing noise by setting an expansion cavity between the air pump and the drying chamber. The expansion cavity is located in the air flow path of the drying tube, at the outlet of the one-way valve of the air pump outlet and at the tail of the regeneration channel. Combined with the damping effect of the elastic valve core, the drying chamber of this utility model can reduce noise. At the same time, the synergistic buffer structure of the expansion cavity and the one-way valve can also suppress airflow noise.

[0041] (4) Preventing dust from escaping from the dryer: This utility model prevents the desiccant from loosening by setting a desiccant limiting component, a desiccant pressing component and a filter component in the drying tank. Under the condition of vibration, it can maintain the uniformity of the desiccant in the drying tank and avoid the desiccant from collapsing. The double-layer filter component intercepts the powder generated by the friction between the desiccants or the aging of the desiccant, ensuring the stable drying performance of the dryer and preventing the desiccant powder from escaping and preventing the generated powder from damaging other components of the system. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a perspective view of an integrated air suspension air supply system dryer according to the present invention.

[0044] Figure 2 This is an exploded view of an integrated air suspension air supply system dryer according to this utility model.

[0045] Figure 3 This is a top view of the dryer of the integrated air suspension air supply system of this utility model.

[0046] Figure 4 This is a cross-sectional view of the dryer of the integrated air suspension air supply system of this utility model, where AA and AB are cross-sectional lines.

[0047] Figure 5 This utility model relates to a dryer for an integrated air suspension air supply system. Figure 4 Cross-sectional view along section line AA.

[0048] Figure 6 This utility model relates to a dryer for an integrated air suspension air supply system. Figure 4 Cross-sectional view along section line AB.

[0049] In the diagram: 1-Air pump outlet check valve; 11-Valve core; 12-Elastic structural component; 13-Ring valve core ring; 14-Check valve outlet; 2-Expansion chamber; 21-Expansion chamber sealing ring; 22-Air passage; 3-Drying tank; 31-Desiccant limiting component; 32-Desiccant clamping component; 4-One-way air outlet passage; 41-Sealing component; 5-Regeneration passage. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0051] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0053] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0054] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0055] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0056] See Figures 1 to 6This utility model provides an integrated air suspension air supply system dryer. The dryer is connected to the air pump in the air supply system and is installed at the top of the piston of the air pump body. The dryer integrates an air pump outlet check valve 1, an expansion chamber 2, and a drying barrel 3. The expansion chamber 2 is located between the air pump outlet check valve 1 and the drying barrel 3. Air flows through the outlet of the air pump outlet check valve 1 into the expansion chamber 2, and then enters the drying barrel 3 for drying before being discharged.

[0057] Please refer to it again. Figure 1 and Figure 6 The air pump outlet check valve 1 includes a valve core 11, an elastic structural member 12, and a ring valve core ring 13. The elastic structural member 12 connects the valve core 11 to the dryer. The ring valve core ring 13 is located on the outer ring of the valve core 11. Three check valve outlet ports 14 are provided on the ring valve core ring 13. When the elastic structural member 12 is not deformed, the ring valve core ring 13 contacts the valve core 11 and seals the air pump outlet: air pump outlet check valve 1.

[0058] Please refer to it again. Figure 1 The expansion chamber 2 is located between the dryer and the air pump, and between the air pump and the drying barrel 3. An expansion chamber sealing ring 21 is provided on the outer ring of the expansion chamber 2, so that the expansion chamber 2 can only be filled with air through the one-way valve 1 at the outlet of the air pump. The air pump is provided with an air outlet hole for the expansion chamber 2.

[0059] Please refer to it again. Figure 2 The drying chamber 3 is filled with desiccant for drying air; desiccant limiting members 31 are provided at both ends of the desiccant in the drying chamber 3, and the other side of the desiccant limiting member 31 is connected to the inside of the drying chamber 3 through the desiccant pressing member 32; the expansion chamber 2 is connected to the drying chamber 3 through the air channel 22; a filter screen is attached to the side of the desiccant limiting member 31 near the desiccant.

[0060] Please refer to it again. Figure 2 The desiccant limiting member 31 is a circular limiting piece with multiple through holes in the center. The diameter of the through holes in the desiccant limiting member 31 is smaller than the particle size of the desiccant. The desiccant pressing member 32 is a spring with its two ends connected to the desiccant limiting member 31 and the inner side of the drying barrel 3, respectively. The function of the filter screen is to filter the dust formed after the desiccant is pulverized, and to prevent the dust from entering the air suspension air supply system and affecting its operation.

[0061] Please refer to it again. Figure 3 There are two drying barrels 3, and the two drying barrels 3 are connected in parallel. The expansion chamber 2 is connected to the two drying barrels 3 through two air channels 22 respectively. The two drying barrels 3 are connected to the one-way air outlet channel 4 and the regeneration channel 5 respectively.

[0062] Please refer to it again. Figures 3-5The dryer is equipped with a one-way air outlet channel 4 and a regeneration channel 5. Both the one-way air outlet channel 4 and the regeneration channel 5 are connected to the drying barrel 3. When the dryer is not running, the one-way air outlet channel 4 is closed. When air is supplied, the airflow flows through the one-way air outlet channel 4, resulting in low flow resistance. During regeneration, the one-way air outlet channel 4 is closed by the sealing element 41, and the airflow flows through the regeneration channel 5, which is throttled and facilitates regeneration. The channel opening of the one-way air outlet channel 4 is a large channel opening, and the channel opening of the regeneration channel 5 is a small channel opening. The diameter of the large channel opening is larger than the diameter of the small channel opening.

[0063] Please refer to it again. Figure 6 The large channel opening has a wedge-shaped structure, with the diameter gradually increasing outward. A sealing element 41 is provided at the end of the large channel opening. The sealing element 41 is an elastic sphere, and its diameter is larger than the inner diameter of the large channel opening, which is 1.5 times the minimum diameter of the large channel opening. The sealing element 41 is confined between the dryer and the air pump. When the low-pressure airflow passes through the regeneration channel 5 for regeneration, the sealing element 41 seals the large channel opening of the one-way air outlet channel 4. The one-way air outlet channel 4 and the one-way valve 1 at the air pump outlet make the dryer a one-way throttle valve for the air pump.

[0064] Please refer to it again. Figure 1 The valve core 11 is made of an elastic material, specifically hydrogenated nitrile rubber. The advantages of using hydrogenated nitrile rubber for the valve core 11 are good sealing performance, rust resistance, and low noise. The sealing element 41 is made of a lightweight material, specifically polytetrafluoroethylene (PTFE).

[0065] Please refer to it again. Figures 1-6 When the air pump discharges air through the one-way valve 1 at the air pump outlet, the air in the air pump first enters the space between the air pump and the one-way valve 1 at the air pump outlet. The elastic structural component 12 undergoes elastic deformation towards the dryer, and the valve core 11 moves towards the dryer. The air enters the expansion chamber 2 through the one-way valve outlet 14 of the ring valve core ring 13, and then enters the drying barrel 3 to be dried by the desiccant. The dried air is blown out through the one-way outlet channel 4, which pushes open the seal 41.

[0066] Please refer to it again. Figures 1-6 The low-pressure airflow enters the drying chamber 3 through the regeneration channel 5 to regenerate the desiccant. The regenerated humid airflow enters the expansion chamber 2 after passing through the drying chamber 3, and is finally discharged through the air outlet of the expansion chamber 2 on the air pump, taking away the moisture adsorbed by the dry air in the desiccant, thus regenerating the desiccant.

[0067] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0068] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dryer for an integrated air suspension air supply system, characterized in that, The dryer is connected to the air pump in the air supply system; the dryer integrates an air pump outlet check valve (1), an expansion chamber (2), and a drying barrel (3). The expansion chamber (2) is located between the air pump outlet check valve (1) and the drying barrel (3). Air flows through the outlet of the air pump outlet check valve (1) into the expansion chamber (2), and then enters the drying barrel (3) for drying before being discharged. The drying barrel (3) is filled with desiccant for drying air; The dryer is provided with a one-way air outlet channel (4) and a regeneration channel (5), both of which are connected to the drying barrel (3).

2. The integrated air suspension air supply system dryer according to claim 1, characterized in that, The air pump outlet check valve (1) includes a valve core (11), an elastic structural component (12), and a ring valve core ring (13). The elastic structural component (12) connects the valve core (11) and the dryer. The ring valve core ring (13) is disposed on the outer ring of the valve core (11). One or more one-way valve outlets (14) are provided on the ring valve core ring (13).

3. The integrated air suspension air supply system dryer according to claim 2, characterized in that, When the air pump discharges air through the one-way valve (1) at the air pump outlet, the elastic structural member (12) undergoes elastic deformation toward the dryer, the valve core (11) moves toward the dryer, and the air enters the expansion chamber (2) through the one-way valve outlet (14) of the ring valve core ring (13).

4. The integrated air suspension air supply system dryer according to claim 3, characterized in that, The expansion chamber (2) is located between the dryer and the air pump. An expansion chamber sealing ring (21) is provided on the outer ring of the expansion chamber (2) so that the expansion chamber (2) can only be filled with air through the one-way valve (1) at the outlet of the air pump.

5. The integrated air suspension air supply system dryer according to claim 4, characterized in that, The expansion chamber (2) is located between the air pump and the drying barrel (3), and the air pump is provided with an air outlet for the expansion chamber (2); The low-pressure airflow enters the drying chamber (3) through the regeneration channel (5) to regenerate the desiccant. The regenerated humid airflow enters the expansion chamber (2) after passing through the drying chamber (3) and is finally discharged through the outlet.

6. The integrated air suspension air supply system dryer according to claim 5, characterized in that, The unidirectional air outlet channel (4) has a large channel opening with a wedge-shaped structure and the diameter of the hole gradually increases outward. A sealing element (41) is provided at the end of the large channel opening. The diameter of the sealing element (41) is larger than the inner diameter of the large channel opening. The sealing element (41) is confined between the dryer and the air pump.

7. The integrated air suspension air supply system dryer according to claim 6, characterized in that, When the low-pressure airflow is regenerated through the regeneration channel (5), the seal (41) seals the large opening of the one-way air outlet channel (4).

8. The integrated air suspension air supply system dryer according to claim 6, characterized in that, The valve core (11) is made of an elastic material, and the seal (41) is made of a lightweight material.

9. The integrated air suspension air supply system dryer according to claim 6, characterized in that, The regeneration channel (5) has a small channel opening, and the large channel opening has a larger diameter than the small channel opening.

10. The integrated air suspension air supply system dryer according to claim 1, characterized in that, The desiccant in the drying barrel (3) is provided with desiccant limiting members (31) at both ends, and the other side of the desiccant limiting member (31) is connected to the inside of the drying barrel (3) through the desiccant pressing member (32); the expansion cavity (2) is connected to the drying barrel (3) through the air channel (22); The desiccant limiting member (31) has a filter attached to the side near the desiccant.

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