JP6345542B2 - Compressed air drying system - Google Patents

Description

  The present invention relates to a compressed air drying system.

  Vehicles such as trucks, buses, and construction machinery control systems such as brakes and suspensions using compressed air sent from a compressor. The compressed air delivered from the compressor contains moisture contained in the atmosphere and oil that lubricates the inside of the compressor. When this compressed air containing moisture and oil enters each system, it causes rusting and swelling of the rubber member, which causes malfunction of the system. For this reason, a compressed air drying system for removing moisture and oil from the compressed air is provided downstream of the compressor. The compressed air drying system is provided with an air dryer (see, for example, Patent Document 1) that passes compressed air through a desiccant to remove moisture and oil.

  In the air dryer, a load operation in which compressed air is passed through the desiccant to remove moisture and oil, and an unload operation in which the moisture and oil captured by the desiccant are discharged to the outside are performed. . The air discharged from the air dryer during the unload operation includes moisture and oil. For this reason, recently, in consideration of environmental load, in a compressed air drying system, it has been proposed to provide an oil separator downstream of the air dryer for separating and recovering oil from the air discharged from the air dryer during unloading operation. .

  The oil separator performs gas-liquid separation by causing air containing moisture or oil to collide with the collision material. By this gas-liquid separation, the air from which moisture and oil have been removed is discharged to the outside, and the moisture and oil separated from the air are collected as a drain in a drain reservoir (see, for example, Patent Document 2). ).

JP 2012-106155 A JP 2013-234632 A

  By the way, in the above compressed air drying system, there has been no study on the installation positions of the air dryer and the oil separator. For this reason, there is a need for a compressed air drying system in which an air dryer and an oil separator are installed at optimal positions.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a compressed air drying system in which an air dryer and an oil separator are installed at optimal positions.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A compressed air drying system that solves the above problems is a compressed air drying system that captures moisture and oil contained in compressed air, captures moisture and oil contained in compressed air sent from a compressor during load operation, and An air dryer that discharges air containing moisture and oil captured during unloading operation, and an oil separator that separates moisture and oil from the air containing moisture and oil discharged from the air dryer and collects them in a drain reservoir And the gist is that the oil separator is installed above the air dryer in the vertical direction.

  The air dryer is often installed together with various devices, and the installation space is limited around the air dryer. In addition, the oil separator is often additionally installed in order to remove oil contained in the exhaust of the air dryer, and installation space is not considered. Therefore, according to the above configuration, the air dryer and the oil can be easily installed vertically above the air dryer where there is a relatively large installation space, avoiding the vicinity of the air dryer where there is no installation space because other devices already exist. The separator can be installed at an optimum position.

  About the compressed air drying system, the compressed air drying system is mounted on a vehicle equipped with a cargo bed, the air dryer constitutes the cargo bed, and is installed below the top plate on which an article is placed, and the oil separator is It is preferable to install on the upper side of the top plate.

  According to the said structure, an oil separator is installed above the top plate which mounts articles | goods. Thereby, an oil separator can be easily installed because the installation space of an oil separator exists reliably. Further, since the upper side of the top plate is a position where it is not necessary to bend when collecting the drain, the collection operation is easy.

In the compressed air drying system, the oil separator is preferably fixed to the top plate via a support member.
According to the said structure, since an oil separator is fixed to a top plate via a supporting member, an oil separator can be reliably installed with respect to a top plate.

  According to the present invention, the air dryer and the oil separator can be installed at optimum positions.

The block diagram which shows schematic structure of one Embodiment of a compressed air drying system. The perspective view which shows the installation position with respect to the tractor of the air dryer and oil separator of one Embodiment of a compressed air drying system. The side view which shows the installation position with respect to the tractor of the air dryer and oil separator of the compressed air drying system. The side view which shows the installation position with respect to the track | truck of the air dryer and oil separator of the modification of a compressed air drying system.

Hereinafter, with reference to FIGS. 1-3, one Embodiment which actualized the compressed air drying system to the tractor is described.
As shown in FIG. 1, a tractor that pulls a trailer controls a system such as a brake and a suspension by using compressed air sent from a compressor 1. A compressed air drying system that removes oil and water from the compressed air is provided downstream of the compressor 1. The compressed air drying system is provided with an air dryer 2 for removing oil moisture from the compressed air and drying it. In the air dryer 2, a desiccant 2c is provided. The air dryer 2 passes the compressed air through the desiccant 2c to remove the moisture and oil, and the unload operation regenerates the desiccant 2c by discharging the moisture and oil captured by the desiccant 2c to the outside. And do. The air dryer 2 sends dry compressed air dried by the load operation to the system tank 4. The system tank 4 supplies compressed air to each system such as a brake and a suspension. When the pressure in the system tank 4 reaches a predetermined value, an unload operation is performed in which the exhaust valve 2a of the air dryer 2 is opened. When the exhaust valve is opened, the air dryer 2 reversely flows the compressed air, and sends out air (purge air) containing moisture and oil from the outlet 2b.

  In the compressed air drying system, an oil separator 3 is provided downstream of the air dryer 2 in consideration of environmental load. The oil separator 3 is connected to the discharge port 2b of the air dryer 2 via the air dryer connection hose 20, and separates and collects oil and water from the purge air discharged when the desiccant 2c in the air dryer 2 is regenerated.

  The oil separator 3 is an oil separator that performs gas-liquid separation by a collision method. In the casing 3a of the oil separator 3, a plurality of collision members 3b with which the purge air containing oil and moisture collides are provided. The collision type oil separator 3 collides purge air containing oil and moisture with the collision material 3b to separate the oil and moisture from the purge air, and discharges clean air from the discharge port 3d. Hereinafter, the liquid containing oil and water separated from the purge air is referred to as drain. The oil separator 3 is provided with a drain reservoir 3c that stores the separated drain.

  As shown in FIG. 2 and FIG. 3, the tractor 10 is provided with a front wheel WF and a rear wheel WR because it can run on its own. Above the front wheel WF, a cab 11 in which a driver seat and a passenger seat are provided is installed. On the upper side of the side frame 12 from behind the cab 11 to above the rear wheel WR, there is provided a loading platform 14 on which a top plate 13 on which articles are placed is installed.

  The oil separator 3 of the compressed air drying system is installed above the air dryer 2 of the compressed air drying system in the vertical direction. That is, the air dryer 2 is installed below the top plate 13, and the oil separator 3 is installed above the top plate 13. The system tank 4 is fixed below the top plate 13. The air dryer 2 is fixed to the system tank 4.

  The oil separator 3 is fixed to the top plate 13 via the support member 5. The support member 5 is an L-shaped plate material. The opposing fixing portions 5a of the top plate 13 of the support member 5 are fixed to the top plate 13 by bolts. The oil separator 3 is provided with a fixing mounting portion 3e integrated with the housing 3a. The oil separator 3 has a mounting portion 3e fixed to a support portion 5b standing upright from the top plate 13 of the support member 5 by a bolt. Since there is almost no space around the air dryer 2, it can be easily installed by installing the oil separator 3 above the top plate 13.

Next, with reference to FIGS. 1-3, the effect | action of the compressed air drying system comprised as mentioned above is demonstrated.
As shown in FIGS. 1 to 3, the compressor 1 generates compressed air by driving the engine and sends the compressed air to the air dryer 2. The air dryer 2 allows the compressed air introduced from the compressor 1 to pass through the desiccant 2 c, performs a load operation to remove moisture and oil contained in the compressed air, and sends the dry compressed air to the system tank 4. The system tank 4 supplies compressed air to each system. On the other hand, when the pressure in the system tank 4 reaches a predetermined value, the air dryer 2 performs an unload operation for regenerating the desiccant 2c, reversely flows the compressed air, and sends out purge air containing moisture and oil from the discharge port 2b. To do. The purge air sent from the discharge port 2 b of the air dryer 2 is introduced into the oil separator 3 through the air dryer connection hose 20. The purge air is sent to the oil separator 3 positioned above in the vertical direction by the pressure of the compressed air.

  When purge air containing oil and moisture is introduced, the oil separator 3 separates oil and moisture from the purge air by colliding with the collision material 3b provided in the housing 3a. The clean air from which the oil and moisture is separated from the purge air is discharged from the discharge port 3d. On the other hand, the oil and water separated from the purge air is collected as drainage in the drain reservoir 3c.

In this way, by easily installing the oil separator 3 above the vertical direction of the air dryer 2, the air dryer 2 and the oil separator 3 can be installed at optimal positions.
As described above, according to this embodiment, the following effects can be obtained.

  (1) The air dryer 2 and the oil separator can be easily installed vertically above the air dryer 2 having a relatively large installation space while avoiding the vicinity of the air dryer 2 having no installation space due to the presence of other devices. 3 can be installed at an optimum position.

  (2) The oil separator 3 is installed above the top plate 13 on which the article is placed. Thereby, since the installation space of the oil separator 3 exists reliably, the oil separator 3 can be installed easily. Further, since the upper side of the top plate 13 is a position where it is not necessary to bend down when collecting the drain, the collecting operation is easy.

(3) Since the oil separator 3 is fixed to the top plate 13 via the support member 5, the oil separator 3 can be reliably installed on the top plate 13.
In addition, the said embodiment can also be implemented with the following forms which changed this suitably.

  In the above embodiment, the compressed air drying system is embodied in the tractor 10 that pulls the trailer. However, the present invention is not limited to the tractor and may be embodied in a vehicle such as a truck, a bus, and a construction machine. For example, as shown in FIG. 4, the oil separator 3 may be installed between the cab 31 of the truck 30 and the body 35 serving as a cargo compartment. On the side frame 32, a loading platform 34 provided with a top plate 33 is provided. The oil separator 3 is fixed to the top plate 33 via a support member 5 fixed to the top plate 33.

  In the above embodiment, the vehicle is used in the vehicle where the top plates 13 and 33 are present, but the oil separator 3 is installed so as to be positioned above the air dryer 2 in the vertical direction even in a vehicle where there is no top plate. Is desirable.

  DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Air dryer, 2a ... Exhaust valve, 2b ... Discharge port, 2c ... Desiccant, 3 ... Oil separator, 3a ... Housing, 3b ... Colliding material, 3c ... Drain reservoir part, 3d ... Discharge port, 3e ... mounting part, 4 ... system tank, 5 ... support member, 5a ... fixing part, 5b ... support part, 10 ... tractor, 11 ... cab, 12 ... side frame, 13 ... top plate, 14 ... loading platform, 30 ... truck 31 ... cab, 32 ... side frame, 33 ... top plate, 34 ... loading platform, 35 ... body.

Claims (3)

A compressed air drying system for capturing moisture and oil contained in compressed air,
An air dryer that captures moisture and oil contained in compressed air sent from the compressor during load operation, and discharges air containing moisture and oil captured during unload operation;
An oil separator that separates moisture and oil from the air containing moisture and oil discharged from the air dryer and collects them in a drain reservoir;
The oil separator is installed above the air dryer in a vertical direction. A compressed air drying system characterized by things. The compressed air drying system of claim 1.
The compressed air drying system is mounted on a vehicle equipped with a cargo bed,
The air dryer constitutes the loading platform and is installed on the lower side of the top plate on which articles are placed,
The compressed air drying system, wherein the oil separator is installed on the upper side of the top plate. The compressed air drying system according to claim 2, wherein the oil separator is fixed to the top plate via a support member.

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