JPH0435677Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a method for temporarily storing compressed air from an air compressor, etc., in order to supply compressed air to, for example, a vehicle height adjustment device, etc. The present invention relates to a compressed air tank suitable for use in.

[Prior art]

Generally, when supplying compressed air to a vehicle height adjustment device or the like, it is necessary to supply dry compressed air in order to prevent water or the like from accumulating in the air chamber of the vehicle height adjustment device.

Therefore, FIG. 2 shows a pneumatic circuit for a vehicle height adjustment device according to the prior art.

In the figure, 1 is an air compressor, and 2 is a motor that drives the compressor 1. The motor 2 is connected to a pressure switch 9, which will be described later, via a wiring 3, and the pressure switch 9 is turned on. , OFF, the air compressor 1 is driven and stopped. 4A, 4B, 4C, and 4D are air pipes for connecting the discharge side of the air compressor 1 to a vehicle height adjustment device (not shown), and 5 is connected to the air compressor 1 via the air pipe 4A. The air dryer 5 contains a desiccant such as silica gel inside, absorbs moisture in the compressed air from the air compressor 1, and dries it.

Further, 6 indicates a regeneration tank connected to the air dryer 5 via an air pipe 4B, and 7 indicates a storage tank for temporarily storing compressed air connected to the regeneration tank 6 via an air pipe 4C. The storage tank 7 is connected to the vehicle height adjustment device via an air pipe 4D, and is adapted to appropriately supply dry compressed air to the vehicle height adjustment device. 8 is air piping 4C
The check valve 8 is designed to allow compressed air to flow only from the regeneration tank 6 to the storage tank 7. 9 is turned OFF when the pressure in the storage tank 7 exceeds the set value.
A pressure switch 9 is turned on when the pressure falls below a set value, and the pressure switch 9 is connected to the motor 2 via a wiring 3.

Further, 10 indicates a solenoid valve connected in the middle of the air pipe 4A, the solenoid valve 10 is connected to the wiring 3 on one side, and the pressure switch 9 is
When the pressure switch 9 is turned on and the air compressor 1 is driven by the motor 2, the valve is closed, and when the pressure switch 9 is turned off and the air compressor 1 is stopped, the valve is opened as shown in the figure. There is. When the solenoid valve 10 is opened, the compressed air in the regeneration tank 6 is transferred to the air dryer 5.
This compressed air is used to regenerate the desiccant in the dryer 5 so that it can absorb moisture again, and the compressed air is discharged to the outside.

The pneumatic circuit of the prior art has the above-mentioned configuration, and when the pressure inside the storage tank 7 drops below the set value, the pressure switch 9 is turned on, the solenoid valve 10 is closed, and the motor 2 is turned on. The air compressor 1 is driven, and the compressed air is dried by the air dryer 5 and sequentially sent from the regeneration tank 6 to the storage tank 7 and stored therein. When the pressure inside the storage tank 7 exceeds the set value, the pressure switch 9 is turned off.
Air compressor 1 is stopped and solenoid valve 10 is opened. At this time, the regeneration tank 6
When the solenoid valve 10 is opened, the compressed air inside gradually flows back to the air dryer 5 side through the throttle 5A, and is discharged to the outside from the solenoid valve 10 while regenerating the desiccant inside the air dryer 5. .
On the other hand, the dry compressed air in the storage tank 7 is sequentially supplied to the vehicle height adjustment device via the air pipe 4D, and is used to maintain the vehicle body at a desired height using the air pressure.

[Problem that the invention attempts to solve]

Incidentally, the air compressor 1, air dryer 5, regeneration tank 6, storage tank 7, etc. that constitute the pneumatic circuit are all installed inside the vehicle.

However, in the above-mentioned conventional technology, the regeneration tank 6
Since the regeneration tank 6 and the storage tank 7 are separated into two tanks, it is necessary to increase the installation space inside the vehicle, and it is also necessary to assemble the regeneration tank 6 and the storage tank 7 into the vehicle. This makes workability during assembly very poor. Furthermore, it is necessary to connect the air pipe 4C between the regeneration tank 6 and the storage tank 7, and to provide a check valve 8 in the middle of the air pipe 4C, which increases the number of connection points and welding points. A drawback is that it is difficult to improve reliability against air leaks, etc.

The present invention was developed in view of the above-mentioned shortcomings of the prior art.The present invention divides a single tank into two chambers with a partition wall, thereby making it possible to integrate the regeneration tank and the storage tank. By installing a check valve on the bulkhead, the number of connection points and welding points can be reduced, improving reliability against leaks, reducing the installation space, and making maintenance easier. The purpose of this project is to provide tanks for

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention includes a tank body, a partition wall that divides the tank body into a first chamber and a second chamber, and a partition wall that is connected to the tank body. a valve housing provided therein; a check valve that is removably and replaceably incorporated into the valve housing and allows compressed air to flow only from the first chamber side to the second chamber side; and an opening of the first chamber to the outside. an external opening provided in the tank body facing the check valve and having a diameter larger than that of the check valve; and compressed air flowing into the first chamber through the external opening. In order to do this, a configuration is adopted that includes a joint that is removably installed in the external opening.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

In the figure, 11 indicates a tank body, and the tank body 1
1 consists of a cylindrical body 11A, and closing parts 11B and 11C that are fixed to both ends of the body 11A by means such as welding and close both ends of the body 11A. The interior is a closed space. Reference numeral 12 indicates a partition wall located near the closing part 11B side and fixed to the inner circumferential surface of the body part 11A using means such as welding. It is divided into an air chamber A for air storage, and an air chamber B for storage as a second chamber, and the air chamber B is formed to have a larger volume than the air chamber A. The air chamber A is configured to have the same function as the regeneration tank 6 described in the prior art, and the air chamber B is configured to have the same function as the storage tank 7.

Reference numeral 13 indicates a valve housing fixed to the center of the partition wall 12 by means such as welding. Opening side is air chamber A
It protrudes inward in the axial direction. A communication hole 13A is provided in the center of the bottom of the valve housing 13 in the axial direction to communicate the inside of the valve housing 13 with the air chamber B. Reference numeral 14 indicates a cap that is removably screwed onto the opening side of the valve housing 13, and on the center side of the cap 14, another communication hole 14A that communicates the inside of the valve housing 13 with the air chamber A is bored in the axial direction. It is set up. Further, the space between the cap 14 and the valve housing 13 is airtightly sealed by an O-ring (not shown).

Reference numeral 15 indicates a check valve that is disassembled and replaced between the valve housing 13 and the cap 14, and the check valve 15 is seated and separated around the communication hole 14A of the cap 14. , valve body 15 to close
A and a spring 15B that always biases the valve body 15A toward the cap 14, and the check valve 15 only allows compressed air to flow from the air chamber A side to the air chamber B side. ing. The check valve 15 can be easily attached and detached from the valve housing 13 by removing the cap 14 from the valve housing 13.

Next, 16 indicates a cylindrical external opening fixed to the center side of the closed part 11B of the tank body 11 using means such as welding, and the external opening 16 extends in the axial direction from inside the air chamber A to the outside. It protrudes by a predetermined dimension and is disposed in the closing portion 11B of the tank body 11 so as to face the valve housing 13, cap 14, and check valve 15. The external opening 16 is formed to have a larger diameter than the cap 14, check valve 15, etc., so that the cap 14 and check valve 15 can be easily removed from the outside.

Reference numeral 17 indicates a joint that is removably screwed into the external opening 16, and an O-ring 18 is installed between the joint 17 and the external opening 16 to provide an airtight seal therebetween. Then, the air pipe 4B described in the prior art is connected to the joint 17, whereby compressed air is sent into the air chamber A, and this compressed air causes the check valve 15 to open. The air then flows into the air chamber B and is stored therein. Furthermore, 19,
Reference numeral 19 indicates a cylindrical outlet that is fixed to the closed portion 11C of the tank body 11 by means such as welding, and each outlet 19 is connected to the air pipe 4D etc. described in the prior art, and is connected to the air chamber B. The compressed air stored in
It is now being supplied to other countries.

The compressed air tank according to this embodiment has the above-mentioned configuration and is used, for example, in place of the regeneration tank 6, check valve 8, storage tank 7, etc. described in the prior art shown in FIG. 17 is connected to an air pipe 4B, and each outlet 19 is connected to an air pipe 4D. The compressed air stored in the air chamber A of the tank body 11 is then transferred to an air dryer 5.
The compressed air flowing back to the side and used to regenerate the desiccant in the air dryer 5 and stored in the air chamber B is supplied to the vehicle height adjustment device to maintain the vehicle body at a desired height. be used as much as possible.

According to this embodiment, the inside of the tank body 11 is divided into two air chambers A and B by the partition wall 12, and the air chambers A and B are used as the regeneration tank 6 and the storage tank 7. Because of this, there is no need to assemble the tanks 6 and 7 to the vehicle separately as in the prior art, and it is only necessary to assemble the tank body 11, which greatly improves work efficiency during assembly. The main body 11 can be miniaturized and formed compactly, and the mounting space on the vehicle can be significantly reduced compared to the prior art.

Also, since the partition wall 12, valve housing 13, cap 14, and check valve 15 are used instead of the air pipe 4C and check valve 8 described in the prior art,
The number of connection points, welding points, etc. can be reliably reduced, and reliability against compressed air leaks and the like can be improved.

Furthermore, when replacing the check valve 15, etc., if the joint 17 is removed from the external opening 16, the external opening 16 faces the check valve 15, the cap 14, etc., and has a larger diameter than these. Because of this, the cap 14 can be removed through the external opening 16, and the check valve 15 can be easily disassembled, replaced, etc., and maintenance can be facilitated.

In addition, in the above embodiment, the case where compressed air is supplied to the vehicle height adjustment device has been described as an example, but the present invention is not necessarily limited to this, and it goes without saying that it may be used for other purposes. .

[Effect of idea]

As described in detail above, according to the present invention, the inside of the tank body is divided into the first chamber and the second chamber by the partition wall, and the partition wall is provided with compressed air only from the first chamber side to the second chamber side. A check valve that allows air to flow is provided, and an external opening that allows compressed air to flow into the first chamber via a joint is provided at a position in the tank body that faces the check valve, and the external opening is set to be lower than the check valve. Since they are formed to have a large diameter, for example, the first chamber and the second chamber can be used as a regeneration tank and a storage tank, and the tank can be miniaturized and formed compactly. In addition, various effects such as improved reliability against leaks, easier maintenance, etc. can be achieved.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of a tank showing an embodiment of the present invention, and FIG. 2 is an overall view showing a pneumatic circuit according to the prior art. 11...tank body, 12... bulkhead, 13...
Valve housing, 14... Cap, 15... Check valve, 16... External opening, 17... Coupling, A, B...
...Air chamber.

Claims (1)

[Scope of utility model registration request] A tank body, and a first chamber and a second chamber inside the tank body.
a partition wall defined by a chamber; a valve housing provided on the partition wall; and a valve housing that is removably and replaceably incorporated into the valve housing, and allows compressed air to flow only from the first chamber side to the second chamber side. a check valve, an external opening provided in the tank body facing the check valve so as to open the first chamber to the outside, and having a diameter larger than that of the check valve; A compressed air tank comprising a joint removably attached to the external opening to allow compressed air to flow into the first chamber through the opening.