CN214267314U - Air compressor protection device for engine of automobile crane - Google Patents

Abstract

The utility model provides an air compressor protection device of an automobile crane engine; comprises a pressure regulating valve, a radiating pipe, an air dryer and a four-loop protection valve; the air compressor's export communicates with the import of air-vent valve, and the export of air-vent valve communicates with the import of cooling tube, and the export of cooling tube communicates with air dryer's import, and air dryer's export communicates with the import of four return circuit protection valves, and the export and the outside gas circuit of four return circuit protection valves communicate. The compressed air output by the air compressor flows into the air dryer through the pressure regulating valve and the radiating pipe. The pressure regulating valve only has a straight-through function. However, when the inlet of the air dryer is completely frozen, the compressed air at the outlet of the pressure regulating valve cannot be normally conveyed into the brake pipeline, and is exhausted through the pressure relief port of the pressure regulating valve, so that the air compressor and the sealing element of the exhaust valve are protected, and the service life of the air compressor is prolonged.

Description

Air compressor protection device for engine of automobile crane

Technical Field

The utility model relates to an automobile crane engine air compressor machine protection device.

Background

Compressed air output by an air compressor of an existing automobile crane is stored in an air storage cylinder after being radiated, but an existing pressure limiting device is generally installed on an air dryer, and when the air compressor reaches the limit working load of the dryer, an exhaust port of the dryer carries out exhaust unloading, so that the normal work of the air compressor is guaranteed. However, in severe weather, when the inlet of the air dryer is completely frozen, the compressed air output by the air compressor is accumulated in the pipeline from the air compressor to the inlet of the air dryer, and the compressed air cannot be unloaded, so that the air compressor is easily damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an automobile crane engine air compressor machine protection device that rational in infrastructure, facilitate the use is provided.

In order to solve the technical problem, the utility model provides an air compressor protection device of an automobile crane engine;

comprises a pressure regulating valve, a radiating pipe, an air dryer and a four-loop protection valve;

the air compressor's export communicates with the import of air-vent valve, and the export of air-vent valve communicates with the import of cooling tube, and the export of cooling tube communicates with air dryer's import, and air dryer's export communicates with the import of four return circuit protection valves, and the export and the outside gas circuit of four return circuit protection valves communicate.

Preferably, the outlet of the four-loop protection valve is communicated with the inlet of the air tank, and the outlet of the air tank is communicated with an external air passage.

With this structure, the compressed air output from the air compressor flows into the air dryer through the pressure regulating valve and the heat radiating pipe. The pressure regulating valve only has a straight-through function. However, when the inlet of the air dryer is completely frozen, the compressed air at the outlet of the pressure regulating valve cannot be normally conveyed into the brake pipeline, and is exhausted through the pressure relief port of the pressure regulating valve, so that the air compressor and the sealing element of the exhaust valve are protected, and the service life of the air compressor is prolonged.

For more clear understanding the technical content of the utility model, this protection device for automobile crane engine air compressor machine will be referred to as this protection device for short below.

The beneficial effect of this protection device does: in severe weather, after the inlet of the air dryer is completely frozen, the compressed air of the air compressor can be normally unloaded; after the pressure regulating valve is unloaded, the unloading valve is closed, and the unloading valve cannot be in an exhaust state for a long time, so that subsequent normal work is ensured.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the protection device.

Detailed Description

As shown in fig. 1

The protection device comprises a pressure regulating valve 2, a radiating pipe 3, an air dryer 4 and a four-loop protection valve 5.

The outlet of the air compressor 1 is communicated with the inlet of the pressure regulating valve 2, the outlet of the pressure regulating valve 2 is communicated with the inlet of the radiating pipe 3, the outlet of the radiating pipe 3 is communicated with the inlet of the air dryer 4, the outlet of the air dryer 4 is communicated with the inlet of the four-loop protection valve 5, the outlet of the four-loop protection valve 5 is communicated with the inlet of the air tank 6, and the outlet of the air tank 6 is communicated with an external air path.

The compressed air output from the air compressor 1 flows into the air dryer 4 through the pressure regulating valve 2 and the heat radiating pipe 3. The pressure regulating valve 2 only serves as a through connection. However, when the inlet of the air dryer 4 is completely frozen, the compressed air at the outlet of the pressure regulating valve 2 cannot be normally conveyed into the brake pipeline, and is exhausted through the pressure relief port of the pressure regulating valve 2, so that the air compressor 1 and the exhaust valve sealing member are protected, and the service life of the air compressor 1 is prolonged.

The above description is only one embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and improvements can be made without departing from the principle of the present invention, and these should also be considered as belonging to the protection scope of the present invention.

Claims (2)

1. The utility model provides an automobile crane engine air compressor machine protection device which characterized in that:

comprises a pressure regulating valve, a radiating pipe, an air dryer and a four-loop protection valve;

the air compressor's export communicates with the import of air-vent valve, and the export of air-vent valve communicates with the import of cooling tube, and the export of cooling tube communicates with air dryer's import, and air dryer's export communicates with the import of four return circuit protection valves, and the export and the outside gas circuit of four return circuit protection valves communicate.

2. The air compressor protection device for the engine of the automobile crane as claimed in claim 1, wherein:

the outlet of the four-loop protection valve is communicated with the inlet of the air tank, and the outlet of the air tank is communicated with an external air path.

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