Air supply unit externally-hung rear dryer system

Abstract

The utility model discloses an air supply unit externally-hung rear dryer system which comprises a compressor, a drying tank and a gas distribution valve, the drying tank and the gas distribution valve are installed on the outer side of the compressor, the drying tank is installed at the outlet end of the compressor, and the gas distribution valve is installed at the outlet end of the drying tank. And a drying assembly for drying air is arranged in the compressor, and the air dried by the drying assembly is subjected to secondary drying in the drying tank. The drying tank is additionally arranged between the compressor and the gas distribution valve and connected through the high-pressure pipeline, the externally-hung drying tank can be independent of the compressor body, the structural state can be updated according to different boundaries of customers, and the dosage of molecular sieves in the drying tank can be adjusted according to gas storage tanks with different volumes; the air can be subjected to double drying of the compressor and the drying tank, the service life of the compressor is effectively prolonged, and therefore the service life of the air suspension system is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle suspension, in particular to an air supply unit externally mounted post-dryer system. Background Art

[0002] An advanced vehicle suspension system consists of air springs, shock absorbers, an air supply system (e.g., an air compressor, air distribution valves, air pipes, and air tanks), a guide mechanism, and a vehicle height control system. The air supply unit provides compressed air to the air suspension system, connecting to the distribution valve via a high-pressure pipeline. This high-pressure air is then delivered to the air springs and air tanks via the air suspension air pipes, actively changing the height / level of the vehicle body relative to the axle or road surface.

[0003] Currently, the desiccant in air supply units is mostly integrated within the compressor, integrally connected to the valve block. The traditional compressor operates as follows: ambient air enters the compressor chamber and is controlled by a piston. The desiccant inside dries the compressed air and then exits the compressor through a high-pressure pipeline and a distribution valve, where the dried, high-pressure air is distributed to the air spring and air storage tank.

[0004] Existing desiccant technology integrates the desiccant into the compressor, preventing flexible adjustment of the desiccant tank structure. This leads to poor adaptability, and the desiccant tank volume and desiccant content within conventional compressors are fixed. Currently, the amount of air that can be dried is limited to approximately 12L. Over long-term operation, the molecular sieve within the desiccant tank weakens, resulting in poor drying results. Therefore, a post-dryer system external to the air supply unit is needed. This system allows the dry air within the compressor to flow through a high-pressure pipeline for secondary drying, thereby supplying dry air to various air suspension systems. Utility Model Content

[0005] The technical problem to be solved by the present invention is: how to provide an air supply unit aeration and drying system that can meet the diverse needs of customers.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] An air supply unit external post-dryer system includes a compressor, a drying tank installed outside the compressor, and a gas distribution valve, wherein the drying tank is installed at the outlet end of the compressor, and the gas distribution valve is installed at the outlet end of the drying tank; a drying component for drying air is provided inside the compressor, and the air dried by the drying component is subjected to secondary drying in the drying tank.

[0008] This application installs a drying tank between the compressor and the gas distribution valve and connects them through a high-pressure pipeline. The external drying tank can be independent of the compressor body, and the structural state can be updated according to the customer's different boundaries. The dosage of the molecular sieve in the drying tank can also be adjusted according to the different volumes of gas storage tanks. The gas can be doubly dried by the compressor and the drying tank, effectively improving the service life of the compressor, thereby extending the service life of the air suspension system.

[0009] As a further solution of the present invention: the outlet end of the compressor is detachably connected to the inlet end of the drying tank through a first high-pressure pipeline, and the outlet end of the drying tank is detachably connected to the inlet end of the gas distribution valve through a second high-pressure pipeline.

[0010] As a further solution of the present invention: a drying tank mounting bracket is provided on the outside of the drying tank.

[0011] As a further solution of the present invention: the drying component includes an air desiccant, and the air desiccant is installed in a secondary chamber opened at the outlet end of the compressor.

[0012] As a further solution of the present invention: the compressor includes a compression chamber opened inside the compressor, and a piston is arranged inside the compression chamber, and the piston can transport air into the air desiccant.

[0013] As a further solution of the present invention: an exhaust valve and a safety valve are also installed on one side of the compressor, wherein the exhaust valve and the safety valve are both connected to the compression chamber, the secondary chamber and the compressor outlet.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This application installs a drying tank between the compressor and the gas distribution valve and connects them through a high-pressure pipeline. The external drying tank can be independent of the compressor body, and the structural state can be updated according to the different boundaries of the customer. The dosage of the molecular sieve in the drying tank can also be adjusted according to the different volumes of the gas storage tank. The gas can be doubly dried by the compressor and the drying tank. In addition, the molecular sieve of the dryer is backflushed regularly, which can effectively improve the service life of the compressor, thereby extending the service life of the air suspension system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of an external post-dryer system for an air supply unit according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of a drying tank according to an embodiment of the present utility model;

[0018] Figure 3This is a schematic structural diagram of a gas distribution valve according to an embodiment of the present utility model;

[0019] Description of reference numerals:

[0020] 1. Compressor; 11. Compression chamber; 12. Rocker lever; 13. Exhaust valve; 14. Air desiccant; 15. Piston; 16. Primary chamber; 17. Secondary chamber;

[0021] 2. The first high-pressure pipeline;

[0022] 3. Drying tank; 31. Drying tank mounting bracket;

[0023] 4. Second high-pressure pipeline;

[0024] 5. Gas distribution valve. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] Reference Figure 1 、 Figure 2 and Figure 3 , an air supply unit external post-dryer system, comprising a compressor 1, a first high-pressure pipeline 2, a drying tank 3, a second high-pressure pipeline 4 and a gas distribution valve 5, wherein the drying tank 3 and the gas distribution valve 5 are located outside the compressor 1, the outlet end of the compressor 1 is detachably connected to the inlet end of the drying tank 3 through the first high-pressure pipeline 2, and the outlet end of the drying tank 3 is detachably connected to the inlet end of the gas distribution valve 5 through the second high-pressure pipeline 4;

[0027] It should be noted that both ends of the first high-pressure pipeline 2 connected to the compressor 1 and the drying tank 3 can be detachably connected using locking nuts or the like; both ends of the second high-pressure pipeline 4 connected to the drying tank 3 and the gas distribution valve 5 can be detachably connected using locking nuts or the like.

[0028] Reference Figure 1The compressor 1 includes a compression chamber 11, a rocker lever 12, an exhaust valve 13, an air desiccant 14, and a piston 15. The compression chamber 11 is opened inside the compressor 1, and the piston 15 is arranged inside the compression chamber 11. The rocker lever 12 is installed on one side of the piston 15. A primary cavity is arranged inside the compressor 1 and below the piston 15. A secondary chamber is arranged above the piston 15. An air desiccant 14 is arranged inside the secondary chamber. The outlet end of the secondary chamber is detachably connected to the first high-pressure pipeline 2; an exhaust valve 13 and a safety valve are arranged on the outside of the compressor 1, wherein the exhaust valve 13 and the safety valve are connected to the compression chamber 11, the secondary chamber and the first high-pressure pipeline 2.

[0029] Reference Figure 1 and Figure 2 A drying tank mounting bracket 31 is provided on the outside of the drying tank 3 for supporting and installing the drying tank 3, and a molecular sieve is provided inside the drying tank.

[0030] The specific operating principles of this application are as follows:

[0031] External air enters the compression chamber 11, and the piston moves upward, causing negative pressure to form in the primary chamber, sucking the air in the compression chamber 11 into the primary chamber; the piston moves downward, causing the air in the lower primary chamber to be compressed to form positive pressure; the air in the upper secondary chamber forms negative pressure, and the air enters the secondary chamber; the piston moves upward, and the air in the upper secondary chamber is compressed again, forming a secondary compression and discharged to the drying unit, where the air desiccant 14 inside dries the compressed gas and discharges it from the compressor through the first high-pressure pipeline 2 to the drying tank 3 for drying;

[0032] Specifically, after being compressed by two pistons, the gas enters the compressor air desiccant 14, then enters the drying tank 3 through the first high-pressure pipeline 2 for further drying. The two-stage compressed gas then passes through the second high-pressure pipeline 4 and is distributed through the gas distribution valve 5. This present invention adds a post-installed external drying tank 3 to the existing system. Therefore, based on the effective operating time of the air supply unit provided by the system or the mileage of the vehicle, the gas undergoes dual drying after long-term operation of the air supply unit. Combined with regular backflushing of the dryer molecular sieve, this effectively extends the service life of the compressor, thereby extending the life of the air suspension system.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An air supply unit external post-dryer system, comprising a compressor (1), characterized in that: The invention also comprises a drying tank (3) and a gas distribution valve (5) installed outside the compressor (1), wherein the drying tank (3) is installed at the outlet end of the compressor (1), and the gas distribution valve (5) is installed at the outlet end of the drying tank (3); a drying component for drying air is provided inside the compressor (1), and the air dried by the drying component is subjected to secondary drying in the drying tank (3).

2. The air supply unit external post-dryer system according to claim 1, characterized in that: The outlet end of the compressor (1) is detachably connected to the inlet end of the drying tank (3) via a first high-pressure pipeline (2), and the outlet end of the drying tank (3) is detachably connected to the inlet end of the gas distribution valve (5) via a second high-pressure pipeline (4).

3. The air supply unit external post-dryer system according to claim 1, characterized in that: A drying tank mounting bracket (31) is provided on the outside of the drying tank (3).

4. The air supply unit external post-dryer system according to claim 1, characterized in that: The drying component includes an air desiccant (14), which is installed in a secondary chamber opened at the outlet end of the compressor (1).

5. The air supply unit external post-dryer system according to claim 4, characterized in that: The compressor (1) includes a compression chamber (11) opened therein, and a piston (15) is arranged inside the compression chamber (11). The piston (15) can transport air into an air desiccant (14).

6. The air supply unit external post-dryer system according to claim 5, characterized in that: An exhaust valve (13) and a safety valve are also installed on one side of the compressor (1), wherein the exhaust valve and the safety valve are both connected to the compression chamber (11), the secondary chamber and the compressor outlet.

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