A cyclically regenerative air drying system

Abstract

The utility model relates to an air dryer of air compressor especially a circulating regeneration air drying system, include: air dryer, at least two, and parallelly connected setting, air inlet reversing valve is connected with two air dryers and gas source respectively, drying circulating device is connected with two air dryers respectively, and air outlet connector is connected with drying circulating device, wherein, one air dryer is working, and another air dryer is circulating regeneration through drying circulating device. The utility model provides a circulating regeneration air drying system is composed of two air dryers filled with silica gel and parallelly connected setting, and through reversing valve can flow to and fro alternately, make one air dryer dry air at the same time, and another air dryer is regenerating, and the air drying system can carry out continuous drying to compressed air.

Description

Technical Field

[0001] This utility model relates to an air dryer for an air compressor, and more particularly to a circulating regeneration air drying system. Background Technology

[0002] Whether in industrial, automotive, or other applications, compressed air systems require air drying. This is because air's moisture absorption capacity decreases during compression. If the humidity of compressed air exceeds its maximum capacity, water droplets will form, leading to water accumulation in the system. Therefore, compressed air systems are typically equipped with air dryers, which are technically located immediately after the compressor in the airflow direction. In industrial applications, refrigerated dryers are most commonly used. These dryers further reduce the moisture absorption capacity of compressed air by cooling it, thus achieving targeted moisture separation. In automotive applications, such as air suspension systems, silica gel-based air dryers have become the mainstream technology. In this dryer technology, compressed air flows through silica gel. The hydrophilic silica gel absorbs moisture from the compressed air. Because this type of dryer cannot independently separate moisture, moisture gradually accumulates in the silica gel during operation. Therefore, periodic drying cycles are required to regenerate the silica gel. In an air suspension system, when compressed air is discharged from the air suspension, it enters the air dryer through a pipeline to blow air back onto the silica gel, thereby releasing the moisture back into the air and completing the cycle regeneration of the air dryer.

[0003] In new technologies for centrally supplied air systems in automobiles, various compressed air consumers are all supplied by a central air source. These consumers include compressed air interfaces for massage seats, oxygen generators, or external consumers. Since the compressed air used in these applications is released into the atmosphere after use, it cannot be used for the regeneration of silica gel dryers. Therefore, the simple silica gel dryers currently used in air suspension systems cannot be applied here. Furthermore, industrial dryers (such as refrigerated dryers or condensate separators) cannot be used for various reasons. Refrigerated dryers consume excessive electrical energy when used in automobiles and are too bulky and expensive. Condensate separators cannot achieve sufficient air drying under the diverse climatic conditions in which automobiles operate. Utility Model Content

[0004] To solve the above problems, this utility model provides a circulating regeneration air drying system, the specific technical solution of which is as follows: A circulating regeneration air drying system includes: at least two air dryers arranged in parallel; an intake reversing valve connected to both air dryers and an air source respectively; a drying circulation device connected to both air dryers respectively; and an air outlet connector connected to the drying circulation device; wherein, when one of the air dryers is working, the other air dryer is regenerated through the drying circulation device.

[0005] Preferably, the drying circulation device includes: a throttle valve connected in series with the air dryer and corresponding one-to-one, the throttle valve also being connected to the air outlet connector; and a check valve connected in parallel with the throttle valve.

[0006] The drying circulation device includes: an electrically controlled proportional valve connected in series with the air dryer and corresponding to it in a one-to-one manner, and the electrically controlled proportional valve is also connected to the air outlet connector; and a check valve connected in parallel with the electrically controlled proportional valve.

[0007] Preferably, the drying circulation device includes: a drying reversing valve connected to the air dryer; and a drying air source connected to the drying reversing valve for drying the air dryer.

[0008] Preferably, the intake reversing valve includes a solenoid valve or a pneumatic valve.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a circulating regeneration air drying system consisting of two parallel air dryers filled with silica gel. The air dryers can flow forward and backward alternately through a reversing valve, so that while one air dryer is drying the air, the other air dryer is regenerating. This air drying system can continuously dry compressed air.

[0010] Compared to existing air dryers in automobiles, there is no need to periodically interrupt the compressed air supply to regenerate the air dryer. Compared to refrigerated dryers, it has significantly lower energy consumption, space requirements, and costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this application. Detailed Implementation

[0012] The present invention will now be further described with reference to the accompanying drawings.

[0013] Example 1 like Figure 1As shown, a circulating regenerative air drying system includes an air dryer, an inlet reversing valve 2, a drying circulation device, and an outlet connector. The air dryer is a silica gel dryer, and at least two air dryers are connected in parallel. In this embodiment, two air dryers are provided and connected in parallel. The air dryer is connected to the inlet reversing valve 2, which is a two-position four-way valve. One side of the inlet reversing valve 2 is connected to the outlet of the compressor and a silencer, respectively. The silencer is used to reduce noise during exhaust, but it can also be omitted, and the exhaust can be directly discharged into the air. The drying circulation device includes a throttle valve 32 and a check valve 31. The two throttle valves 31 are connected in series with the two air dryers, and the check valve 32 is connected in parallel with the throttle valves 31. Both the check valve 32 and the throttle valve 31 are connected to the outlet connector. When one of the air dryers 11 is operating, compressed air from the compressor enters that air dryer 11 through the intake reversing valve 2, then enters the outlet connector through the throttle valve 31, and is supplied externally. Part of the compressed air is supplied through the outlet connector, and another part enters the other air dryer 12 through the throttle valve 33, and is then discharged through the other port of the intake reversing valve 2. The compressed air circulates and regenerates the air dryer 12, while the air dryer 11 operates. When the air dryer 11 needs drying, the intake reversing valve 2 switches the air path, causing the air dryer 12 to operate, while the air dryer 11 continues its regeneration process.

[0014] Throttling valves can also be electrically controlled proportional valves.

[0015] Intake directional valves include solenoid valves or pneumatic valves.

[0016] Example 2 like Figure 2 As shown, the difference between this embodiment and Embodiment 2 lies in the drying circulation device. The drying circulation device includes a drying reversing valve 4 and a drying air source. One port of the drying reversing valve 4 is connected to two air dryers, and the other two ports are connected to the drying air source and the air outlet connector, respectively. The drying reversing valve 4 is a two-position four-way reversing valve. When air dryer 11 is working, the drying reversing valve 4 connects air dryer 11 to the air outlet connector and air dryer 12 to the drying air source, and air dryer 12 is in a regeneration state. When the drying reversing valve 4 switches, air dryer 11 is connected to the drying air source for regeneration, while air dryer 12 is working.

[0017] This application enables the drying of centrally supplied compressed air in automobiles, so as to enable a continuous supply of compressed air without interrupting the regeneration of the air dryer.

[0018] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A circulating regenerative air drying system, characterized in that, include: Air dryers, at least two, connected in parallel; The intake reversing valve is connected to two air dryers and an air source, respectively. The drying circulation device is connected to two air dryers respectively; as well as An air outlet connector is connected to the drying circulation device. While one of the air dryers is in operation, the other air dryer is regenerated through the drying circulation device.

2. The circulating regenerative air drying system according to claim 1, characterized in that, The drying cycle device includes: A throttle valve, wherein the throttle valve is connected in series with the air dryer and in a one-to-one correspondence, and the throttle valve is also connected to the air outlet connector; and A check valve is provided, which is connected in parallel with the throttle valve.

3. The circulating regenerative air drying system according to claim 1, characterized in that, The drying cycle device includes: An electrically controlled proportional valve, wherein the electrically controlled proportional valve is connected in series with the air dryer and corresponds one-to-one, and the electrically controlled proportional valve is also connected to the air outlet connector; and A check valve is provided, which is connected in parallel with the electrically controlled proportional valve.

4. The circulating regenerative air drying system according to claim 1, characterized in that, The drying cycle device includes: Drying reversing valve, the drying reversing valve being connected to the air dryer; and A drying air source, connected to the drying reversing valve, is used to dry the air in the air dryer.

5. The circulating regenerative air drying system according to claim 1, characterized in that, The intake reversing valve includes a solenoid valve or a pneumatic valve.

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