JPH05302678A - Opening/closing valve for fluid - Google Patents

Abstract

PURPOSE:To eliminate the occurrence of dirt/dust by constituting in such a way that the first valve body blocks up a supply side opening by an advance of the first valve body support rod, and opens the supply side opening and blocks up a discharge side opening by a retreat, and the second valve body blocks up an opening to a discharge passage by an advance of the second valve body support rod interlocked with this, and opens it by a retreat. CONSTITUTION:A supply side opening 3 communicated with a fluid supply passage 2 and a discharge side opening 5 communicated with a discharge passage 4 are arranged in a branch part 1a of a fluid flow passage 1. When a valve body support rod 6 passing penetratingly in non-contact through the discharg side opening 5 is advanced, a valve body 7 blocks up the supply side opening 3, and when being retreated, it opens the supply side opening 3, and blocks up the discharge side opening 5. An opening 8 is arranged in the middle of flowing fluid circulating on the side D to be supplied to the discharge passage 4, and when a valve body support rod 10 is interlocked with a valve body support rod 6 so as to be advanced, a valve body 9 blocks up the opening 8, and opens the opening 8 when it is retreated. Since the valve body 7 and the valve body support rod 6 have no sliding part at all on the fluid supply passage 2 side, the occurrence of dirt/dust caused by sliding movement is eliminated, so that pollution caused by the fluid can be also eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid on / off valve for supplying a fluid, for example, clean air, to a supply side or discharging it to an exhaust side.

[0002]

2. Description of the Related Art A spindle, which is a part of a magnetic disk device which is an external storage device of a computer system,
A magnetic disk, an access arm and a magnetic head,
Generated when the disk enclosure is assembled by, for example, flowing clean air with dust close to zero into the disk enclosure's housing to replace the air after completing the assembly of the disk enclosure with a voice coil motor etc. Alternatively, the mixed dust is removed.

FIG. 4 shows an example of the prior art.
Is an air supply / exhaust device that removes dust inside the housing by supplying and circulating clean air into the housing of the disk enclosure DE. The air supply / exhaust device 21 has a supply port 21a and an exhaust port 21b.
Connect the opening of the disk enclosure DE over and.

One end of an air supply hose 22 is connected to the supply port 21a of the air supply / discharge device 21, the other end of the air supply hose 22 is connected to a valve 23, and this valve 23
Are connected to the air supply pipe 24. An exhaust hose 25 is connected to the exhaust port 21b of the air supply / exhaust device 21.

FIG. 5 shows an example of the valve 23. FIG. 5A shows a valve used in a so-called faucet or the like. A valve element 23b is attached to the tip of a valve support rod 23a.
The valve support rod 23a is screwed to the pipe body 23c, and the valve support rod 23a advances and retreats by rotating it. When the valve support rod 23a moves forward, the valve body 23b is attached to the partition wall 23d provided in the pipe body 23c. It is formed so as to close the drilled opening 23e.

The valve 23 shown in FIG. 5B is a so-called cock, which is a cylindrical valve element or spherical valve element 23f having a predetermined width.
A diametrical through hole 23g is formed in the
Is formed so that when the air flows in the same direction as the axial direction of the pipe body 23h, the clean air flows, and when this through hole 23g faces in the direction perpendicular to the axial direction of the pipe body 23h, the flow of the clean air stops. ing.

In the valve 23 shown in FIG. 5 (C), clean air flows when the butterfly valve body 23i is oriented in the axial direction of the tube body 23j, and the butterfly valve body 23i is rotated by the axis of the tube body 23j. It is formed so that the circulation of clean air is stopped when it faces in the direction perpendicular to the direction.

[0008]

In the valve 23 shown in FIG. 5 (A) of the conventional example, the valve element 23b is provided at the tip.
Since the valve support rod 23a attached with is screwed to the pipe body 23c, the opening 23e is closed or opened by the valve body 23b. Therefore, when the valve support rod 23a is rotated and axially moved. Dust is generated due to the sliding of the valve support rod 23a.

Further, in the valve 23 shown in FIG. 5B, when the cylindrical valve body or the spherical valve body 23f having a predetermined width is rotated to pass or stop the clean air, a cylinder having a predetermined width is used. Valve body or spherical valve body 23f and tube body 2
Dust is generated by sliding on the inner surface for 3 h.

In the valve 23 shown in FIG. 5C, the butterfly valve body 23i and the tube body 2i and the tube body 2 are rotated when the butterfly valve body 23i is rotated to allow or stop the circulation of clean air.
Dust is generated by sliding on the inner surface of 3j.

As shown in FIG. 4, clean air is supplied and circulated in the housing of the disk enclosure DE, and clean air for removing dust in the housing is circulated or stopped. When the valve 23 as described above is attached between the air supply pipe 24 and the air supply pipe 24, dust generated by sliding of the valve body or the valve support rod when the valve 23 is opened and closed is disc enclosure D.
There was a problem that it got into E and had an adverse effect.

According to the present invention, the on-off valve is constructed so that the valve body and its supporting rod do not slide at all on the fluid supply path side, so that the sliding of the valve body and its supporting rod in the conventional manner causes dust. The purpose is to prevent the occurrence of.

[0013]

In order to achieve the above-mentioned object, the present invention, as shown in FIG. 1, provides a branch portion 1a of a fluid flow passage 1 with a supply side opening communicating with a fluid supply passage 2. Three
And a discharge side opening 5 communicating with the discharge path 4 is provided, and a first valve body 7 is attached to the tip of a first valve body supporting rod 6 that penetrates the discharge side opening 5 in a non-contact manner. When the valve body support rod 6 is moved forward, the first valve body 7 closes the supply side opening 3, and when it is retracted, the first valve body 7 opens the supply side opening 3 and opens the discharge side opening 5. A moving means for moving the first valve body support rod 6 so as to close it is provided, and an opening 8 is provided in the middle of flowing the fluid circulating on the supply side D to the discharge path 4,
A second valve body 9 that opens and closes the opening 8 is provided at the tip of the second valve body support rod 10, and the second valve body support rod 10 moves forward in conjunction with the first valve body support rod 6. Second valve body 9
Means for moving the second valve body support rod 10 in conjunction with the first valve body support rod 6 so that the second valve body 9 opens the opening 8 when the opening 8 is closed and retracted. It is an on-off valve for the provided fluid.

[0014]

Since the fluid on-off valve of the present invention is constructed as described above, the valve element 7 is provided on the fluid supply passage 2 side.
Also, since there is no sliding portion of the valve element support rod 6, there is no generation of dust due to sliding, and therefore there is no possibility of contaminating the fluid circulated to the supplied side D.

[0015]

Embodiments of the fluid on-off valve of the present invention will be described in detail below with reference to FIGS. FIG. 2 shows that the assembly of the disk enclosure is performed by, for example, flowing clean air with dust close to zero into the housing of the disk enclosure to perform air exchange after the completion of the assembly of the disk enclosure by the fluid on-off valve of the present invention. A schematic view of an embodiment for removing dust that sometimes occurs,
FIG. 3 is a right side view thereof.

In these figures, 1 is a clean air flow passage, and a clean air supply passage 2 is provided at a branch portion 1a thereof.
A supply side opening 3 that communicates with the discharge side opening 5 and a discharge side opening 5 that communicates with the discharge path 4 are provided, and a first valve body is provided at the tip of a first valve body supporting rod 6 that penetrates the discharge side opening 5 in a non-contact manner. 7 is provided, and when the first valve body support rod 6 is moved forward, the first valve body 7 closes the supply side opening 3, and when it is retracted, the first valve body 7 opens the supply side opening 3. A first air cylinder 11 is provided as a moving unit that moves the first valve body support rod 6 so as to close the discharge side opening 5.

An opening 8 is provided in the middle of flowing the clean air circulated in the housing of the disk enclosure DE to the discharge path 4, and a second valve body 9 for opening and closing the opening 8 is provided with a second valve body support rod. This second valve body support rod 1 is provided at the tip of 10
The second valve body 9 closes the opening 8 when 0 is moved forward in association with the first valve body support rod 6, and the second valve body 9 opens the opening 8 when moved backward. The first air cylinder 11 is also used as a moving means for moving the valve body supporting rod 10 in conjunction with the first valve body supporting rod 6. The open / close valve V for clean air is configured as described above.

The opening / closing valve V is incorporated in the protective cover 12, and the advancing / retreating rod 13a of the second air cylinder 13 is connected to the protective cover 12, and by the operation of the second air cylinder 13. Protective cover 12
The on-off valve V protected by the above is designed to move up and down.

To enable the protective cover 12 to move up and down, a flange 1b is formed at the lower end of the flow passage 1, and the flange 1b is fitted in the air supply pipe 14 in a non-contact state when sliding. When the flange 1b at the lower end of the flow passage 1 rises together with the protective cover 12, it comes into contact with the inward flange 14a formed at the upper end of the air supply pipe 14, and the space between the air supply pipe 14 and the flow passage 1 is increased. No air leakage.

A contact portion between the inward flange 14a formed at the upper end of the air supply pipe 14 and the flange 1b at the lower end of the flow passage 1, the supply side opening 3 communicating with the clean air supply passage 2, and the first side. The contact portion with one valve body 7, the contact portion with the first valve body 7 in contact with the discharge side opening 5 communicating with the discharge path 4, and the opening 8 and the second hole provided in the middle of the discharge path 4. Although not shown, an O-ring made of a material such as a fluororesin having a low dust generation property is provided at a contact portion with the valve body 9 for improving the airtightness.

A side-comb-shaped clean air rectifying plate 15a is formed at the upper end of the partition wall 15 between the clean air supply path 2 and the discharge path 4, and a conveyor 16 drives the disk enclosure above the opening / closing valve V. The DE has moved, and the on-off valve V has the disk enclosure D.
When rising in the direction of E, the current plate 15a is
And as shown in FIG. 3, the disk enclosure DE
Are fitted between the magnetic disks 17 constituting the above to improve the flow of clean air. In addition, 18 is an exhaust hose.

In this embodiment, by using the clean air opening / closing valve as described above, for example, clean air with dust close to zero is flowed into the enclosure of the disk enclosure after the completion of the assembly of the disk enclosure. Since dust is not generated by the opening / closing operation of the open / close valve when performing the air exchange, it is possible to completely remove the dust generated during the assembly of the disk enclosure.

In the embodiment described above, the open / close valve for clean air is explained.
It can also be used as an on-off valve for gas or liquid that requires extremely high cleanliness.

[0024]

As described above, in the fluid on-off valve of the present invention, at the branch portion of the fluid flow passage, the supply side opening communicating with the fluid supply path and the discharge side opening communicating with the discharge path are provided. The first valve body is attached to the tip of the first valve body support rod that penetrates the discharge side opening without contact, and the first valve body is moved when the first valve body support rod is moved forward. Provided is a moving means for moving the first valve body support rod so that the first valve body opens the supply side opening and closes the discharge side opening when the supply side opening is closed and retracted. An opening is provided in the middle of flowing the circulated fluid to the discharge passage, and a second valve body for opening and closing the opening is provided at the tip of the second valve body supporting rod, and the second valve body supporting rod is provided with the first valve body. The second valve element closes the opening when it is moved forward in conjunction with the valve element support rod of, and the second valve element moves forward when it is retracted. Since the fluid opening / closing valve is provided with the moving means for moving the second valve body supporting rod in conjunction with the first valve body supporting rod so as to open the opening, the valve body and the valve body are provided on the fluid supply path side. Since there is no sliding part of the support rod,
There is no generation of dust due to sliding of the valve element and the valve element support rod, and therefore there is no possibility of contaminating the fluid circulated on the supply side.

[Brief description of drawings]

FIG. 1 is a principle view of a fluid on-off valve according to the present invention.

FIG. 2 is a diagram showing an embodiment of a fluid on-off valve of the present invention.

FIG. 3 is a right side view of FIG.

FIG. 4 is a diagram showing an example of use of a conventional fluid on-off valve.

FIG. 5 is a diagram showing each example of a conventional fluid on-off valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fluid flow path 1a Branch part 1b Collar 2 Fluid supply path 3 Supply side opening 4 Discharge path 5 Discharge side opening 6 First valve body support rod 7 First valve body 8 Opening 9 Second valve body 10th Second valve support rod 11 First air cylinder V Opening / closing valve 12 Protective cover 13 Second air cylinder 13a Advance rod 14 Air supply pipe 14a Collar 15 Partition wall 15a Rectifier plate 16 Conveyor 17 Magnetic disk 18 Exhaust hose DE disk enclosure 21 Air supply / drainer 21a Supply port 21b Exhaust port 22 Air supply hose 23 Valve 23a Valve support rod 23b Valve body 23c Tubular body 23d Partition wall 23e Opening 23f Spherical valve body 23g Through hole 23h Tubular body 23i Butterfly valve body 23j Tubular body 24 Air supply pipe 25 Exhaust hose

Claims (1)

[Claims] 1. A branch portion (1a) of a fluid flow passage (1),
A supply-side opening (3) communicating with the fluid supply path (2) and a discharge-side opening (5) communicating with the discharge path (4) are provided, and the discharge-side opening (5) penetrates the discharge-side opening (5) without contact. The first valve body (7) is attached to the tip of the one valve body support rod (6), and when the first valve body support rod (6) is moved forward, the first valve body (7) supplies the above-mentioned supply. When the side opening (3) is closed and retracted, the first valve body (7) opens the supply side opening (3) and closes the discharge side opening (5). ) Is provided, an opening (8) is provided in the middle of flowing the fluid circulating on the supply side D to the discharge passage (4), and the second valve body (9) for opening and closing this opening (8) is provided. ) Is provided at the tip of the second valve disc support rod (10), and when the second valve disc support rod (10) is moved forward in conjunction with the first valve disc support rod (6), Disc The second valve body support rod (10) is connected to the first valve body support rod (10) so that the second valve body (9) opens the opening (8) when the opening (8) is closed and retracted by the second valve body (9). A fluid on-off valve comprising a moving means for moving in conjunction with (6).