JP4894118B2 - Compressed air take-out device in a compressor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In order to supply compressed air to both of these pneumatic tools, etc., as a drive source for a pneumatic tool for normal pressure used in a normal pressure region and a high pressure pneumatic tool having a higher working pressure region than this. The present invention relates to a compressed air take-out device in the compressor of the present invention.
[0002]
[Prior art]
There are known pneumatic tools for normal pressure used in a normal pressure region where the working air pressure is, for example, 8 kg / cm ² or less, and high pressure pneumatic tools used in a high pressure region where the working pressure region is higher than these. Then, plugs attached to hoses for supplying compressed air to the tools are each of a dedicated shape in order to prevent erroneous connection. In a compressor that can supply compressed air to both the high-pressure and normal-pressure tools, it is necessary to install at least one high-pressure dedicated air outlet and at least one normal-pressure dedicated air outlet. There is a need to equip each compressed air outlet with a dedicated coupler and pressure regulator for connecting a dedicated plug for high pressure and normal pressure, which increases the cost of the compressor. Yes.
[0003]
Therefore, when a coupler that can connect both the high pressure plug and the normal pressure plug on the high pressure tool side is installed, and the normal pressure plug is connected to this coupler, it is adjusted by the pressure regulator. The applicant has already proposed a compressed air take-out device that cuts off the supply of compressed air to the normal pressure plug when the supply pressure exceeds the operating pressure region of the normal pressure tool. With this configuration, it is possible to reduce the cost of the compressor because only one compressed air outlet is required regardless of whether the tool is used at normal pressure or high pressure.
[0004]
As shown in FIG. 10, the configuration of the compressed air take-out device already proposed includes a socket portion 51 to which both high-pressure and normal-pressure plugs can be connected. In a state where the pressure plug P1 is connected, when the supply pressure from the pressure regulator becomes higher than the operating pressure region of the normal pressure tool, the air flow path between the pressure regulator and the socket part 51 is closed and closed. A valve 52 is provided. The on-off valve 52 receives the air pressure supplied from the pressure regulator and operates the on-off valve 52 in the closing direction, and urges the on-off valve 52 in the opening direction so as to face the pressure receiving surface 52a. It is configured to operate by the spring 53, the opening and closing valve 52 cooperates with the movable valve member 54 in what is moved by the mounting of the normal pressure plugs P1, the cylindrical portion 52b of the opening and closing valve 52 is movable The O-ring 55 of the valve body 54 is accommodated to block the air passage. The on-off valve 52 has a spring force of the spring 53 and an area of the pressure receiving surface 52a of the compressed air so that it operates in the closing direction at the upper limit of the operating air pressure region of the normal pressure tool. Is operated when the pressure exceeds the set pressure, and the supply of compressed air to the normal pressure plug P1 is shut off, so that compressed air having a pressure exceeding the operating air pressure region to the normal pressure dedicated tool is not supplied. I have to.
[0005]
[Problems to be solved by the invention]
However, if the supply air pressure exceeds the normal operating air pressure by adjusting the pressure regulator to set the working pressure of the tool with the normal pressure dedicated tool connected, it is natural that the on-off valve 52 operates to shut off the flow of compressed air. However, when the on-off valve 52 is once closed, the cylindrical portion 52b of the on-off valve 52 is fitted to the O-ring 55 of the movable valve body, so that sliding is possible. Further, the on-off valve 52 of the above mechanism is configured to be operated by the difference between the pressure receiving surface 52a on the upstream side of the valve body and the pressure receiving surface 52c on the downstream side and the spring force. In a state where the passage is blocked by operating, both pressure receiving surfaces are blocked by the on-off valve body, and the downstream pressure receiving surface side 52c facing the plug side may be reduced to almost 0 kg / cm ^2. Since the pressure differential acting on the State-off valve 52 is lowered from about slightly above set pressure the supply air pressure and re-adjustment is not operated in the direction to open the air passage occurs. For example, when the on-off valve 52 is set to operate in the closing direction with a supply air pressure of 8 kg / cm ² , the on-off valve 52 that is closed at one end opens and closes unless the supply pressure of the pressure regulator is lowered to 5 kg / cm ^2. The valve 52 cannot be operated in the opening direction. For this reason, when using a normal pressure tool, there was a problem that usability was bad.
[0006]
The present invention solves the above-mentioned problems in the prior art, and when the atmospheric pressure plug is connected, if the output air pressure at the pressure regulator exceeds the set pressure, the flow path is shut off and the normal pressure tool is applied. Compressed air of operating air pressure is quickly supplied by preventing the supply of compressed air exceeding the operating air pressure and re-adjusting the supply pressure of the pressure regulator after the shut-off to below the operating air pressure. The challenge is to make it possible.
[0007]
[Means for achieving the object]
In order to solve the above-mentioned problems, the invention of claim 1 provides a pressure regulator that adjusts and supplies high-pressure compressed air stored in an air tank to an arbitrary pressure, and compressed air adjusted by the pressure regulator. It is composed of a high-pressure plug and a coupler that connects to each dedicated tool via a normal-pressure plug, and a socket that can be fitted with either a high-pressure plug or a normal-pressure plug is formed at one end of the coupler. In the coupler, an open / close valve that opens and closes the flow path of the compressed air supplied to the upstream side of the socket portion through the pressure regulator, and a slidable switch that is provided on the downstream side of the open / close valve. A pressure reducing valve constituted by an operating member spring-biased so as to push the valve open, and a force and an operating member for biasing the operating member in the closing direction by the air pressure of the compressed air supplied from the pressure regulator Open the open / close valve Predetermined pressure almost close to the upper limit value of the operating pressure range of the air pressure to the on-off valve is closed operated normally tool (10) when the air pressure exceeds a predetermined pressure by a balance between the spring force biases The first shut-off valve for preventing the compressed air supplied from the pressure regulator from flowing out to the socket part on the downstream side of the operating member, A rod that can open and close the on-off valve, and a second rod that closes the compressed air supplied from the pressure regulator to the socket when the rod does not open and close the on-off valve in conjunction with the operation of the rod. a shut-off valve is provided, when the plug for normal pressure only is attached to the socket portion, the reduced pressure air by the pressure reducing valve is actuated only the first shut-off valve in the open position in the plug for normal pressure only. Plug for normal pressure While connection, when the high pressure exclusive plug is attached to the socket portion, the high pressure exclusive Rutotomoni is operated is operated maintaining the on-off valve to the open position only the rod by a plug, said second shut-off valve the is operated in the open position, characterized in that the supply air pressure from the pressure regulator so as to conduct the high pressure exclusive plug.
[0008]
The invention described in claim 2 is a pressure regulator that adjusts and supplies high-pressure compressed air stored in an air tank to an arbitrary pressure, and the compressed air adjusted by the pressure regulator is used exclusively for high pressure. It is composed of a plug and a coupler that connects to each dedicated tool via a normal pressure plug, and a socket portion on which both the high pressure dedicated plug and the normal pressure dedicated plug can be mounted is formed at one end of the coupler. In addition, the coupler is provided in close contact with the upstream side surface of the valve seat formed in the coupler housing, and opens and closes the flow path of the compressed air supplied to the upstream side of the socket portion via the pressure regulator. normally it comprises an on-off valve which is spring-loaded so as to shut off the compressed air Rutotomoni, on the downstream side of the opening and closing valve, the slidable when mounting the atmospheric pressure only. plug by the tip of the plug the normally pressure only. A cylindrical body, and a second cylindrical body that is slidable by a tip of the high-pressure plug and is spring-biased in a direction to push open the on-off valve when the high-pressure plug is mounted. provided so as to press the spring biasing the second tubular body, at the time of connection of the atmospheric pressure only. plug, said second cylindrical body is pushed the first cylindrical body with a plug tip for the normal pressure only. to produce urging force strong spring in the opening direction with respect to the on-off valve by pressing the spring biasing, the air pressure compressed air supplied from the spring force and the pressure regulator is applied to the on-off valve None the air pressure by balance as the on-off valve when exceeding the predetermined pressure is shut off, and at the time of the high pressure exclusive plug connection, directly to the press the opening and closing the second tubular body in the high pressure exclusive plug tip Operate the valve to the open position and keep it in the open position. Characterized in that that.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on examples shown in the drawings. FIG. 1 is a schematic view of an air compressor in which a compressed air take-out device of the present invention is implemented. A compressor 2 driven by an electric motor 1 is compressed to an air intermediate pressure of atmospheric pressure by a front-stage compressor 2a, and is subjected to rear-stage compression. The machine 2b sucks the intermediate pressure through the communication pipe 3 and compresses it to a high pressure corresponding to the working air pressure of the high-pressure dedicated pneumatic drive tool. The high pressure air is stored in the air tank 4. The air tank 4 is provided with at least one compressed air take-out device 7 comprising a pressure regulator 5 for adjusting the pressure of compressed air supplied to the pneumatic tool and a coupler 6 for connecting a plug on the tool side. In the figure, 8 and 9 are pressure gauges for displaying the air pressure value in the air tank 4 and the pressure value adjusted by the pressure regulator 5, respectively. The pressure regulator 5 reduces the pressure of the compressed air stored in the air tank 4 to an arbitrary adjustment pressure from the working pressure region of the normal pressure tool to the working pressure region of the high pressure tool and supplies the pressure to the coupler 6. .
[0010]
As shown in FIG. 2, the coupler 6 is connected to the pressure regulator 5 and has an air supply port 10 to which compressed air that has been decompressed is supplied at one end, and is connected to a tool at the opposite end. A female socket 11 is formed for receiving and mounting the plug. The socket portion 11 is formed so that plugs having different shapes for exclusive use for normal pressure and high pressure can be connected. Within the coupler 6, the plug are first shut-off valve 12a and the second shut-off valve 12b is formed to prevent the outflow of the compressed air from the supply side in the state that is not connected, the first The shut-off valve 12a is composed of an O-ring 14 attached to the outer peripheral surface of the cylindrical body 13 that is operated by attaching the normal pressure dedicated plug P1 to the socket portion 11, and a valve seat 15 formed in the plug housing. In a state where the pressure plug P1 is connected to the socket part 11, the cylindrical body 13 is operated to open the first shut-off valve 12a, and the compressed air is conducted from the air supply port 10 side to the socket part 11 side. The second shutoff valve 12b is composed of an O-ring 17 attached to the outer periphery of the rod 16 that is actuated by the attachment of the high-pressure dedicated plug P2 and the cylindrical body 13, and the high-pressure exclusive plug P2 is attached to the second cutoff valve 12b. The rod 16 is actuated to conduct the compressed air to the high-pressure dedicated plug P2 side.
[0011]
Further, an open / close valve 18 for opening and closing a compressed air passage from the air supply port 10 to the socket portion side is provided on the air supply port 10 side of the coupler 6. The on-off valve 18 is in close contact with the upstream side surface of the valve seat 20 formed on the plug housing by the air pressure supplied from the biasing spring 19 and the air supply port 10 to block the compressed air. An operating member 21 that opens and closes the on-off valve 18 is slidably disposed on the downstream side of the on-off valve 18, and the operating member 21 acts on a pressure receiving surface 21 a that receives compressed air that has passed through the on-off valve 18. The on-off valve 18 is opened / closed by the balance between the compressed air pressure and the spring force pressing the actuating member 21 by the spring 22 arranged on the opposite side of the pressure receiving surface 21a. The pressure of the spring 22 and the area of the pressure receiving surface 21a are such that the pressure of the compressed air acting on the pressure receiving surface 21a is at the upper limit of the working pressure of the normal pressure tool, for example, 8.5 kg / cm ² , as a boundary. When the acting air pressure becomes larger than this, it is set so that it operates in a direction to close the on-off valve 18 and when it is low, it operates in a direction to open the on-off valve 18.
[0012]
That is, the on-off valve 18 and the actuating member 21 function as a pressure reducing valve set by the spring 22 and the pressure receiving surface 21 a, and compressed air in the high pressure region is supplied from the pressure regulator 5 to the air supply port 10. When the normal pressure plug P1 is connected to the socket as shown in FIG. 3, the compressed air reduced to the pressure set by the pressure receiving surface 21a and the spring 22 is supplied to the normal pressure plug P1. Is done. When the normal pressure tool is used at a pressure lower than the set pressure, the pressure regulator 5 adjusts the air pressure supplied to the air supply port 10 to be lower than the set pressure. As a result, the operating member 21 operates in a state where the on-off valve 18 is opened by the spring force of the spring 22, and compressed air having a pressure adjusted by the pressure regulator 5 is supplied to the normal pressure tool. The side surface opposite to the pressure receiving surface 21 a of the operating member 21 is always in communication with the atmosphere via the passage 25. Therefore, there is no change in the area of the pressure receiving surface when the on-off valve 18 is opened and closed, and the balance is not lost depending on the operating direction of the operating member 21.
[0013]
As shown in FIG. 5, the other end 16 a of the rod 16 that is actuated in contact with the tip of the plug by the attachment of the high-pressure dedicated plug P <b> 2 to the socket portion 11 extends in the direction of the on-off valve 18. When the dedicated plug P2 is attached to the socket portion 11 and the rod 16 is operated, the tip 16a of the rod 16 comes into contact with the on-off valve 18 and is separated from the valve seat 20 to open the on-off valve 18. To maintain the state. As a result, the open / close valve 18 is maintained in an open state when a high-pressure dedicated tool is used, and compressed air having a pressure adjusted by the pressure regulator 5 can be supplied to the high-pressure tool. Even when the pressure is adjusted to a pressure lower than the working pressure of the high-pressure tool, low-pressure compressed air is supplied to the high-pressure tool, but there is no problem because there is no danger due to this. The pressure regulator 5 may be readjusted to increase the supply pressure.
[0014]
In the state where neither the normal pressure nor the high pressure plug is connected to the socket portion 11, when compressed air in the operating pressure region of the normal pressure tool is supplied to the air supply port 10, the pressure receiving surface 21 a of the operating member 21 is applied. Although the air pressure acts but the pressing force of the spring 22 is larger, as shown in FIG. 2, the actuating member 21 presses and opens the on-off valve 18, and the compressed air is part of the first shut-off valve 12a. Is connected to. As shown in FIG. 3, when the normal pressure dedicated plug P1 connected to the normal pressure tool is connected to the socket portion 11, the cylindrical body 13 is pressed by the plug and the first shut-off valve 12a is opened to supply air. The compressed air in the normal pressure region supplied to the port 10 is supplied as it is to the tool through the plug.
[0015]
When the adjustment pressure of the pressure regulator 5 is adjusted to the pressure in the high pressure region from this state, the high-pressure compressed air acts on the pressure receiving surface 21a of the operating member 21 to operate the operating member 21, thereby, as shown in FIG. The on-off valve 18 is closed to block the flow of high pressure compressed air toward the socket portion 11 in the downstream direction. When the air pressure on the downstream side decreases due to the consumption of compressed air on the tool side, the air pressure acting on the pressure receiving surface 21a of the operating member 21 also decreases. Therefore, as shown in FIG. To release. When the on-off valve 18 is opened, a high air pressure acts on the pressure receiving surface 21 a of the operating member 21, and the on-off valve 18 is closed again by the operating member 21. Thus, the compressed air reduced to the upper limit pressure of the operating region of the normal pressure tool set by the pressure receiving surface 21 a and the spring 22 is supplied to the normal pressure tool side by the function of the pressure reducing valve by the operating member 21 and the opening / closing valve 18. Is done. Therefore, high-pressure compressed air exceeding the upper limit pressure is not supplied to the normal pressure tool.
[0016]
When compressed air in a high pressure region is supplied to the air supply port 10 with no plug attached to the socket portion 11, the high pressure compressed air acts on the pressure receiving surface 21 a of the operating member 21 to operate. The upper pressure in the operating pressure region of the normal pressure tool set by the pressure receiving surface 21a and the spring 22 is supplied to the first shutoff valve 12a by the function of the pressure reducing valve by the member 21 and the opening / closing valve 18. When the normal pressure dedicated plug P1 is connected to the socket part 11, the compressed air having the upper limit pressure is supplied to the tool side, but the compressed air having the pressure exceeding the upper limit pressure is not supplied to the tool for normal pressure occupation. .
[0017]
Next, another embodiment of the present invention will be described based on another example. As shown in FIG. 6, the coupler 30 connected to the downstream side of the pressure regulator 5 has an air supply port 31 that connects the adjusted compressed air from the pressure regulator 5 to one end side, and the other end portion. A socket portion 32 is formed to which plugs having different shapes for high pressure and normal pressure can be connected.
In the plug receiving opening of the socket portion 32, there are a first cylindrical body 33 that is operated by a plug end when the normal pressure dedicated plug P1 is mounted and a second cylindrical body 34 that is operated when the high pressure dedicated plug P2 is mounted. They are arranged concentrically, and the inside of the second cylindrical body 34 is configured as an air passage 35.
[0018]
On the air supply port 31 side, an open / close valve 36 for opening and closing a flow path of compressed air from the air supply port 31 to the air passage 35 is provided. The open / close valve 36 biases the open / close valve 36 in the closing direction. The air supply port 31 of the valve seat 38 made of an elastic material such as rubber disposed in the coupler housing by the pressing force that the compressed air supplied from the spring 37 and the air supply port 31 acts on the on-off valve 36. It sits on the side surface and blocks the compressed air from the air supply port 31 side.
[0019]
A valve stem 36 a is integrally formed on the downstream side surface of the on-off valve 36, and the end of the stem 36 a is in contact with the end surface of the second cylindrical body 34. A compression spring 39 is disposed between the second cylindrical body 34 and the first cylindrical body 33, and the first cylindrical body 33 is not attached to the socket portion 32 with the normal pressure plug P <b> 1. Is not operated, the compression spring 39 is extended, and the urging force by the compression spring 39 does not act on the second cylindrical body 34. Therefore, in all states from the state in which compressed air is not supplied to the air supply port 31 to the state in which high-pressure compressed air is supplied, the on-off valve 36 is operated by the action of the spring 37 or the action of the spring 37 and the compressed air. The compressed air from the air supply port 31 is closed by being in close contact with the surface of the sheet 38. As shown in FIG. 7, the first cylindrical body 33 is actuated by mounting the normal pressure dedicated plug P <b> 1, whereby the compression spring 39 is compressed and the second cylindrical body 34 is elastically moved to the air supply port 31 side. And the on-off valve 36 is pressed and urged in the opening direction. The spring force of the compression spring 39 is such that the supply air pressure acting on the pressure receiving surface 36b on the upstream side of the on-off valve 36 when the first cylindrical body 33 is operated by mounting the normal pressure dedicated plug P1 is the operation of the normal pressure tool. It is set so as to be balanced at an upper limit pressure, for example, 8 kg / cm ² . Thus, when the supply air pressure exceeds the set pressure, the acting force of the pressure receiving surface 36b of the on- off valve 36 exceeds the force of the compression spring 39 as shown in FIG. It is compressed and moved in the closing direction to block the compressed air.
[0020]
When the adjustment pressure of the pressure regulator 5 is increased and the on-off valve 36 is closed as described above, when the pressure regulator 5 is readjusted and the supply pressure is gradually lowered, the supply pressure becomes the set pressure. When the pressure drops further, the closing direction acting force acting on the pressure receiving surface 36b of the opening / closing valve 36 and the pressing force of the compression spring 39 are reversed, and the opening / closing valve 36 is opened by the spring force of the compression spring 39 to the plug side. Compressed air is supplied. Since the seal of the on-off valve 36 has a face seal structure, there is no sliding resistance when the on-off valve 36 is opened,
Since it can be set so that there is no difference in the pressure receiving area between the opening and closing of the on-off valve 36, the difference in the operating air pressure between the closing direction and the opening direction of the on-off valve 36 can be reduced.
[0021]
As shown in FIG. 9, when the high-pressure plug P2 is connected to the socket portion 32, the second cylindrical body 34 is actuated at the tip of the plug and brought into contact with the tip of the second cylindrical body 34. The on-off valve 36 is moved in the opening direction so that the compressed air can be circulated, and the compressed air of all pressures from the normal pressure region to the high pressure region supplied to the air supply port 31 is supplied to the high pressure dedicated plug P2. . Although compressed air in the normal pressure region is supplied to a tool dedicated to high pressure, there is no problem because a dangerous state does not occur.
[0022]
【Effect of the invention】
According to the present invention as described above, normal because the upper limit pressure of the working pressure of the tool (10) incorporates a pressure reducing valve for pressure reduction, high feed pressures above this limit pressure when connecting the plug for normal pressure only. since the supplied automatically be reduced to limit the pressure to the plug for normal pressure only, never high pressure exceeding the upper limit pressure is supplied to the tool. Further, the high pressure exclusive plug connection time, since so as to maintain forcibly moved to the open position opening and closing valve by the connection of the plug, a pressure regulator does not work functions of the pressure reducing valve in use high pressure tools Compressed air of any adjusted pressure can be supplied to the high pressure tool. Further, it is possible to use normal tool (10) at any pressure at atmospheric pressure region by adjusting the pressure regulator, even when adjusting the pressure value in the pressure regulator exceeds the atmospheric pressure region, the supply air is cut off The compressed air of the upper limit pressure in the working pressure region of the normal pressure tool continues to be supplied, and therefore the operation is not stopped.
[0023]
Further, according to the second aspect of the present invention, since the sealing of the opening and closing valve is set to face seal structure and without sliding resistance when opening and closing operation of the on-off valve, a difference in pressure receiving area at the time of closing and when opening the opening and closing valve Therefore, the difference in operating air pressure between the closing direction and the opening direction of the on-off valve can be reduced. Accordingly , the supply pressure in the normal pressure region can be quickly supplied by the readjustment operation of the supply pressure with the pressure regulator , and the workability of the normal pressure tool can be improved.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a compressor in which a compressed air take-out device of the present invention is implemented. FIG. 2 is a cross-sectional view showing a configuration of a coupler according to a first embodiment of the present invention. FIG. 4 is a cross-sectional view showing a state where the normal pressure plug is attached to the coupler and the on-off valve is opened. FIG. 4 is a cross-sectional view of the same state as FIG. FIG. 6 is a cross-sectional view showing a configuration of a coupler according to a second embodiment of the present invention. FIG. 7 is a normal pressure applied to the coupler of the same embodiment as FIG. FIG. 8 is a cross-sectional view showing a state in which the dedicated plug is attached and the on-off valve is open. FIG. 8 is a cross-sectional view showing a state in which the on-off valve is closed in the same state as FIG. Fig. 10 is a cross-sectional view showing a state where a high-pressure plug is attached to a conventional coupler. FIG. 11 is a cross-sectional view showing a state where the open / close valve is open and FIG. 11 is a cross-sectional view showing a state where the open / close valve is closed with the same conventional coupler as FIG.
5 Pressure regulator 6 Coupler 7 Compressed air take-out device 10 Air supply port 11 Socket part
12a First shut-off valve
12b Second shutoff valve 13 Tubular body 14 O-ring 15 Valve seat 16 Rod 17 O-ring 18 On-off valve 19 Energizing spring 20 Valve seat 21 Actuating member 22 Spring 30 Coupler 31 Air supply port 32 Socket portion 33 First tubular shape Body 34 Second cylindrical body 35 Air passage 36 On-off valve 37 Spring 38 Valve seat 39 Compression spring

Claims (2)

A pressure regulator that adjusts and supplies high-pressure compressed air stored in the air tank to an arbitrary pressure, and the compressed air adjusted by the pressure regulator is supplied to each of the pressure regulator via the high-pressure dedicated plug and the normal pressure dedicated plug. It is composed of a coupler connected to a dedicated tool, and at one end of the coupler is formed a socket part on which both a high pressure dedicated plug and a normal pressure dedicated plug can be mounted,
In the coupler, an open / close valve that opens and closes the flow path of the compressed air supplied to the upstream side of the socket portion via a pressure regulator, and is slidably provided on the downstream side of the open / close valve to open and close the open / close valve. In this way, a pressure reducing valve constituted by a spring-biased operating member is provided, and the operating member is opened and closed by a force for biasing the operating member in the opening / closing valve closing direction by the air pressure of the compressed air supplied from the pressure regulator. When the air pressure exceeds a predetermined pressure due to a balance with the spring biasing force biased in the valve opening direction, the on-off valve is closed and operated so that the air pressure is close to the upper limit value of the operating pressure region of the normal pressure tool. Depressurize to a predetermined pressure value and supply it to the socket side ,
Further, on the downstream side of the operating member, the first shut-off valve and the second shut-off valve for preventing the compressed air supplied from the pressure regulator from flowing out to the socket part, and the on-off valve are pushed open. The second shut-off valve is configured to open when the rod pushes and opens the on-off valve;
When a normal pressure plug is installed in the socket , the normal pressure plug is used to operate only the first shut-off valve to the open position, and the pressure reducing valve is connected to the normal pressure plug. to contrast, when the high pressure exclusive plug is attached to the socket portion, Rutotomoni actuates maintained in the open position the closing valve by operating only the rod by the high pressure exclusive plug, said second shut-off valve A compressed air take-out device in a compressor, characterized in that the air pressure supplied from a pressure regulator is made to conduct to a high-pressure dedicated plug by operating in an open position . A pressure regulator that adjusts and supplies high-pressure compressed air stored in the air tank to an arbitrary pressure, and the compressed air adjusted by the pressure regulator is supplied to each of the pressure regulator via the high-pressure dedicated plug and the normal pressure dedicated plug. It is composed of a coupler connected to a dedicated tool, and at one end of the coupler is formed a socket part on which both a high pressure dedicated plug and a normal pressure dedicated plug can be mounted,
In the coupler, it is provided in close contact with the upstream side surface of the valve seat formed in the coupler housing, and opens and closes the flow path of the compressed air supplied to the upstream side of the socket part via a pressure regulator. comprising an on-off valve which is spring-loaded so as to shut off the compressed air Rutotomoni, on the downstream side of the on-off valve, the first tubular slidable when mounting the atmospheric pressure only. plug by the tip of the plug the normally pressure only. And a second cylindrical body that is slidable by a tip of the high-pressure dedicated plug and is spring-biased in a direction to open the on-off valve when the high-pressure dedicated plug is mounted. Provided to press a spring that urges the cylindrical body,
When connecting a normal pressure only. Plug, spring in the opening direction with respect to the on-off valve by pressing the spring for urging the second tubular body is pushed to the first cylindrical body with a plug tip for the normal pressure only. is generated an urging force, the air pressure by balancing the air pressure compressed air supplied from the spring force and the pressure regulator is applied to the on-off valve is the on-off valve is shut off when exceeds a predetermined pressure No way, and when the high pressure exclusive plug connection, and characterized in that to maintain the open position it is operated in the open position the closing valve by pushing the second cylindrical body in the high pressure exclusive plug tip directly Compressed air take-out device for a compressor

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