JP2525378Y2 - Exhaust valve - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust valve capable of rapidly exhausting fluid in a cylinder or rapidly exhausting compressed air or the like in an air pressure tank.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional exhaust valve. Exhaust valve 2
Is composed of a first body 4 and a second body 6.
The first body 4 has first and second ports 8 and 10 in which screw portions are formed, and a hole 12 communicating with the ports 8 and 10. The second body 6
It has a tip 18 forming a third port 14 in which a thread is formed and a hole 16 communicating with the third port 14. A lip packing 22 having a sleeve 20 is disposed at the bottom of the hole 12 of the first body 4, and the second body 6 is fitted therein.

[0003] When fluid is supplied from the first port 8, the exhaust valve 2 configured as described above operates as a lip packing 22.
Is displaced rightward in the figure and seats on the distal end portion 18 of the second body 6, and the hole 16 of the second body 6 and the first body 4
With the hole 12. Further, the sleeve 20 of the lip packing 22 is opened by the fluid pressure from the first port 8, and the fluid supplied from the first port 8 is supplied to the second port 10. On the other hand, when the supply of the fluid is stopped from the first port 8 and the fluid is supplied from the second port 10, the fluid pressure acts on the sleeve 20 of the lip packing 22, and the lip packing 22 is moved from the tip 18. Separate. Therefore, the fluid supplied from the second port 10 is supplied to the third port 14.

When the exhaust valve 2 configured as described above is provided in a pipe such as a cylinder, the first port 8 is connected to a fluid supply source, the second port 10 is connected to the cylinder, and the third port 10 is connected to the cylinder.
Open port 14 to atmosphere. With such a connection, when the fluid is supplied to the cylinder, the fluid flows from the first port 8 to the second port 10, and when the fluid is discharged from the cylinder, the fluid flows from the second port 10 to the third port 14. The fluid is discharged to the atmosphere.

When the exhaust valve 2 is connected in this way to the cylinder, the effective cross-sectional area of the pipe is increased, the piping distance to the exhaust is shortened, the exhaust is quickly performed, and the response of the cylinder is improved. Can be improved.
Further, since the piping distance to exhaust is shortened, a portion to which moisture generated due to the operation of the cylinder is attached is reduced as much as possible.

[0006]

However, a second port 10 is provided at right angles to the first port 8 for communicating and supplying fluid to and from a device such as a cylinder. Therefore, it is limited to a pipe such as a so-called L-shaped pipe. Therefore, when the exhaust valve 2 is connected in a portion that is linearly piped, there is a problem that the pipe direction must be changed. Also,
When the pipe is made of a non-metallic body such as vinyl, the first port 8 to the third port 8 formed to be connected by screws.
There is a problem that the connection to the port 14 cannot be made or the connection work is complicated.

The present invention has been made to solve this kind of problem, and has been made without changing the piping direction.
It is another object of the present invention to provide an exhaust valve which can be easily connected to a pipe made of a flexible non-metal body such as vinyl.

[0008]

In order to achieve the above object, the present invention provides a first port for supplying a fluid, a second port for supplying a fluid to another device, and a second port for discharging a fluid. Three ports , wherein the first port and the second port
A body of the axial direction is formed to be substantially matched, before
The first, second and third ports are interconnected.
Provided in the fluid passage of the body through which the first port is connected.
Sitting on the first seat under the action of the fluid supplied from it
Allows the first port and the second port to communicate with each other.
A second seat under the action of a fluid supplied from the second port;
The second port and the third port communicate by sitting on
A valve body for switching so as to, and wherein the obtaining Bei a.

[0009] The present invention is, first and second ports are in the interior of each cylindrical hole forming a port, a plurality of claw portions whose tip portion is bent inward in the cylindrical body A guide member provided on the inner peripheral surface of the hole of the port for supporting the chuck member, and abutting against the inner peripheral surface of the chuck member and facing the inside of the chuck member. the claw portion is bent Te, characterized <br/> Rukoto be possessed and release bushing tip is arranged so as to contact, the.

[0010]

In the exhaust valve of the present invention, the first port and the second port
Since the axial direction of the port is substantially parallel, it is possible to incorporate the port into a part where the piping is linearly installed without changing the piping direction, and there is no limitation on the part where the exhaust valve can be disposed.

Further, since the first and second ports are provided with the chuck member supported by the guide member, even if the pipe to the cylinder is a vinyl tube, for example, the claw portion of the chuck member is attached to the tube. Is inserted to prevent the tube from being pulled out and connected to the port.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The exhaust valve according to the present invention will be described in detail below with reference to the attached drawings and preferred embodiments.

First, an exhaust valve according to this embodiment will be described with reference to FIG. The same components as those in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

The exhaust valve 30 has a first port 8 and a second port 10 provided with a one-touch type pipe joint 34 described later at both ends of a cylindrical body 32.
The second port 10 and the second port 10 are formed so that their axial directions substantially coincide with each other. It should be noted that making the axial directions of the ports 8 and 10 substantially coincide with each other means not only making the axes coincide with each other but also making the axes parallel or the axial direction of the first port 8 is the axial direction of the second port 10. Includes having a slight angle to the direction. A substantially central portion of the through hole has a body 32 with respect to the first port 8 and the second port 10.
A hole 35 communicating with the outer peripheral surface at a right angle is provided.

In the center of the hole 35, a valve seat (second
A seat portion 36 is provided, and a hole portion 38 substantially serving as an exhaust port is formed with respect to a protrusion formed on the outer peripheral surface of the body 32.
Is fitted therein. A distal end (first seat) 42 of the exhaust member 40 faces a passage connecting the first port 8 and the second port 10, and a lip packing (valve) is provided between the valve seat 36 and the distal end 42. Body) 22
Are arranged. The hole 38 of the exhaust member 40
A silencer 43 is provided in a portion where the diameter is increased.

The one-touch type pipe joint 34 is formed so that one end of a vinyl tube or the like can be inserted to supply fluid pressure from an external device (not shown). Specifically, the one-touch type pipe joint 34 has a release bush 44, and the guide member 4 is provided outside the release bush 44.
6, the chuck member 48 and the seal member 50 are sequentially arranged.

A seal member 50 is provided on the bottom of the hole of the first port 8. The seal member 50 is a ring body, and its inner peripheral surface is inclined at a certain angle.

The chuck member 48 is formed by forming a flat plate made of elastic metal into a ring shape, and a plurality of slits are formed on the side surface thereof at equal intervals.
8, a claw portion 52 that bends inward is formed at the tip portion.
The tip of the claw 52 is sharpened so as to be directed.

The guide member 46 has a concavity which goes around.
The recess is fitted to the tip of the body 32 and abuts against the side surface of the chuck member 48.

The release bush 44 is formed in a substantially cylindrical shape, and an edge 54 is formed at the tip of the release bush 44 so as to come into contact with the claw 52 of the chuck member 48 at the time of mounting. A plurality are defined.

A meter-in circuit including the exhaust valves 30a and 30b according to this embodiment will be described with reference to FIG.
The exhaust valves 30a and 30b have the same configuration as the exhaust valve 30, and the components will be described with reference to FIG. The circuit switches the air from the compressed air supply source 62 with a switching valve 64, the exhaust valves 30 a and 30 b, and the flow control valve 66.
a and 66b are supplied to the cylinder 60.

First, the tip of a vinyl tube or the like communicating from the switching valve 64 is inserted into the first port 8 of the exhaust valves 30a, 30b. After inserting the vinyl tube to the bottom of the hole of the first port 8, when the vinyl tube is lightly pulled, the claw portion 52 of the chuck member 48 of the one-touch fitting 34 is inserted into the vinyl tube, and the vinyl tube is removed. Prevent escape. Therefore, the vinyl tube and the first port 8 are reliably connected. Similarly, the second port 10 is connected to a vinyl tube communicating with the flow control valves 66a and 66b.

After the above operation, first, compressed air is supplied from the compressed air supply source 62 to the exhaust valve 30b via the switching valve 64. The compressed air that has flowed into the exhaust valve 30 b from the first port 8 reaches the hole 35, displaces the lip packing 22 upward in the drawing, and abuts the distal end 42 of the exhaust member 40. Further, when pressure is applied to the lip packing 22 from the compressed air, the sleeve 20 is opened, and the first port 8 and the second port 10 are communicated. Thus, compressed air is supplied from the exhaust valve 30b to the cylinder 60 via the flow control valve 66b. Due to the displacement of the piston of the cylinder 60, air flows from the other chamber into the flow control valve 66a.
To the second port 10 of the exhaust valve 30a. In the exhaust valve 30a, the lip packing 22 is displaced downward in the drawing by the pressure of the air that has reached the second port 10, sits on the valve seat 36, and shuts off the second port 10 and the first port 8. Since the lip packing 22 is separated from the distal end portion 42 of the exhaust member 40, the second port 10 and the exhaust member 4
The holes 38 communicate with each other. Therefore, the second port 1
The air that has reached 0 is silenced by the silencer 43 disposed in the hole 38 and discharged to the outside. The water in the pipes may be connected and treated by providing a pipe joint instead of the silencer 43 in addition to opening to the atmosphere.

In the exhaust valve according to the present embodiment, since the first port 8 and the second port 10 are formed substantially in a straight line, they can be connected without changing the direction of piping even if they are installed in the middle of piping. In the fluid circuit to the cylinder 60, the exhaust valves 30a and 30b are provided before the switching valve 64 to substantially reduce the piping distance to the exhaust of the cylinder 60. The amount of water generated in the tube and the amount of water adhering to the inside of the pipe can be reduced. If the amount of moisture adhering to the inside of a non-metallic pipe such as a vinyl tube increases, the tube or the like is cut off halfway, and the exhaust valve 30 is interposed at the cut position by the one-touch type fitting 34. To reduce the generation of moisture.

[0025]

According to the exhaust valve of the present invention, the following effects can be obtained.

That is, since the axial directions of the first port and the second port are substantially matched, it is possible to incorporate the exhaust valve without changing the direction of the piping in the middle of the linearly piping portion. It can be incorporated even in the middle of piping where the exhaust valve extends in a straight line.

Further, since the first and second ports are provided with the chuck members supported by the guide members, for example, in the case of piping using a vinyl tube, a part of the vinyl tube or the like is cut off, The tube is locked by the claw portion of the chuck member simply by inserting the portion into the exhaust valve, and the tube can be easily connected. In addition, by incorporating the exhaust valve in the fluid circuit to the cylinder in this manner, the piping distance to the exhaust can be shortened, and the amount of adhered moisture inside the piping can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an exhaust valve according to the present invention.

FIG. 2 is a meter-in circuit of a cylinder incorporating the exhaust valve according to the present invention.

FIG. 3 is an explanatory longitudinal sectional view of an exhaust valve according to a conventional example.

[Explanation of symbols]

 2, 30, 30a, 30b exhaust valve 8 first port 10 second port 22 lip packing 43 silencer 44 release bush 48 chuck member 52 claw

Claims (2)

(57) [Scope of request for utility model registration] A first port through which fluid is supplied, a second port through which fluid is supplied to another device, and a third port through which fluid is discharged , wherein the first port and the second port are connected to each other. Axis
The first port, the second port, and the third port are mutually connected with the body formed so that the line directions substantially coincide with each other.
A first port provided in the fluid passage of the communicating body;
To the first seat under the action of the fluid supplied from the
Makes the first port and the second port communicate with each other.
A second seat under the action of a fluid supplied from the second port
The second port and the third port are linked by sitting on
Exhaust valves, wherein the obtaining Bei a, a valve body for switching so as to pass. 2. The method of claim 1 exhaust valve wherein the first port and the second port includes, in a cylindrical bore portion forming the ports respectively, its distal end a cylindrical body inwardly bent A chuck member having a plurality of claws, a guide member provided on an inner peripheral surface of a hole of the port for supporting the chuck member, and a chuck abutting on an inner peripheral surface of the chuck member. the claw portion is bent toward the inside of the member, the exhaust valve, characterized that you closed and release bushing tip is arranged so as to contact, the.