JPH037649Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a valve device suitable for use in water treatment, suction and pressure feeding of fluid transport pipes, and opening/closing control of suction hoses of fish transfer machines. It is something.

(Prior Art) In this type of conventional valve device, a tapered valve body is rotatably fitted into a valve body fitting taper chamber of a valve box, and the inner wall of the valve body fitting tapered chamber has a circumference around the valve body. A valve seat is provided directly on the valve box itself that is pressed against the surface to form a seal, and the inlet of the valve body fitting taper chamber is closed with a lid body, from which the operating shaft of the valve body is led out to the outside. It was just a structure.

(Problem that the invention aims to solve) However, with this structure, if the contact surface between the valve body and the valve seat becomes worn and loosens, the valve will not be fully closed, so the valve device must be disassembled. It took a long time to repair the wrapping by directly rubbing the valve body and valve body together, and the valve body and valve body had to be replaced.

An object of the present invention is to provide a valve device that can self-repair the sealing state even if some loosening occurs due to wear between the valve body and the elastic valve seat.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained with reference to FIGS. 1 to 6 corresponding to the embodiments. A tapered valve body fitting chamber 2 is provided, and a tapered valve body 3 is fitted into the valve body fitting tapered chamber 2 so as to be rotatable about its axis. It has an elastic valve seat 5 that is pressed against the circumferential surface of the valve body 3 to perform sealing,
The entrance of the valve body fitting tapered chamber 2 is closed by a lid body 6, and an operating shaft 8 for rotating the valve body 3 is rotatably passed through the lid body 6 and led out to the outside. A plurality of ports 9A to 9C are provided on the side wall of the valve body 3, and a through hole 10 is provided across the valve body 3, and by turning the valve body 3, the through hole 10 is brought into alignment with each of the ports. It is based on a valve device that opens and closes by changing the state to a non-conforming state.

In the present invention, in such a valve device, a center seat 11 is provided at the center of the tip of the valve body 3,
A center support 14 is supported in the valve box 1 by penetrating through the valve box 1 and abutting against the center seat 11 via an adjustment washer 13 to rotatably support the valve body 3. An elastic biasing device 17 is provided between the outer periphery of the valve body 8 and the lid body 6 to press and bias the valve body 3 toward the center supporter 14 . At least one pair of V-grooved rubber elastic rings 19 fitted on the outer periphery and each having a V-groove 18 on opposing surfaces, and a rubber elastic O-ring 20 fitted between the opposing V-grooves 18. The elastic biasing tool 17 is backed up by a backing up tool 21 supported by the lid 6 so that a pressing force acts on the valve body 3 side.

(Function) In such a valve device, when the contact surface between the valve body 3 and the elastic valve seat 5 becomes worn due to use and loosens,
The valve body 3 is pressed and moved toward the center supporter 14 by the biasing force of the elastic biasing tool 17, and the portion of the tapered valve body 3 having the larger outer diameter is pressed against the elastic valve seat 5.
Looseness is self-repaired. Moreover, if the spacer 15 is interposed between the center supporter 14 and the valve box 1 or the thickness thereof is increased, the center supporter 1
The protruding length of the tip of the valve body 4 into the valve box 1 is shortened, and the valve body 3 can be moved toward the center supporter 14, and the looseness can be repaired from this side as well.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 4. As shown in the figure, the valve device of this embodiment has a valve box 1 having a circular outer shape, and the valve box 1 is provided with a valve body fitting tapered chamber 2 that opens at the top surface. The valve body fitting tapered chamber 2 has a tapered shape with a large diameter on the opening side and a gradually smaller diameter as it goes inward. A tapered valve body 3 is fitted into the valve body fitting tapered chamber 2 so as to be rotatable about its axis. Valve body fitting taper chamber 2
An elastic valve seat 5 is fitted and supported in the recess 4 of the valve body 1 which is open to the valve body 1 and is pressed against the circumferential surface of the valve body 3 for sealing. This elastic valve seat 5 has a structure in which a core body 5A is lined with hard rubber 5B. The valve seat 5 may be a valve box directly lined with Teflon or hard rubber, or may be a hard synthetic resin molded product without a core. The surface of the elastic valve seat 5 projects into the valve body fitting tapered chamber 2. The entrance of the valve body fitting tapered chamber 4 is closed with a lid 6, and the lid 6 is fixed to the valve box 1 with bolts 7. An operating shaft 8 for rotating the valve body 3 rotatably passes through the lid body 6 and is led out. A plurality of ports 9A, 9B, and 9C are provided on the side wall of the valve box 1. A through hole 10 is provided in the valve body 3 and curved across the valve body 3.

A center seat 11 is provided at the center of the tip of the valve body 3, and a seat plate 12 is fitted and supported on the end face of the center seat 11. A center support 14 is abutted on the valve box 1 via an adjustment washer 13 and rotatably supports the valve body 3.
is supported through the valve body 1. The adjustment washer 13 is curved into a convex spherical shape and can be bent and deformed by pressure. A washer-like spacer 15 is interposed between the valve box 1 and the center supporter 14, so that the length of the center supporter 14 protruding into the valve case 1 can be changed. Center support 1
4 is fixed to the valve box 1 with bolts 16.

An elastic biasing device 1 is provided between the outer periphery of the operating shaft 8 and the lid body 6 to press and bias the valve body 3 toward the center support device 14 side.
7 is provided. This elastic biasing tool 17 is fitted onto the outer periphery of the operating shaft 8 and has a V-groove 18 on opposing surfaces.
It is composed of two pairs of V-grooved rubber elastic rings 19 having the same diameter and a rubber elastic O-ring 20 fitted between the opposing V-grooves 18. This elastic biasing tool 17
The tip is brought into contact with the valve body 3, and the rear end is backed up under pressure by a backup tool 21 supported by the lid body 6, so that a pressing force acts on the valve body 3. That is, when this elastic biasing tool 17 is compressed by the backup tool 21, the rubber elastic O-ring 2
0 is compressed and deformed so that its cross section becomes a square shape and stores energy, and the stored force acts on the valve body 3 side. In addition to rubber, the elastic O-ring may be made of a rubber-like elastic synthetic resin material.

On top of the backup tool 21 is a lock plate 2.
2 is fixed, and lock holes 23 and stoppers 24 are provided on the surface thereof at predetermined intervals in the circumferential direction. On top of the lock plate 22 is the moderation plate 2.
5 are stacked on top of each other. A lock hole 26 is provided through the moderation plate 25 at one location in the circumferential direction, and a stopper 27 is provided on the lower surface. The moderation plate 25 has a square hole 28 in its center, into which the square shaft portion of the operating shaft 8 is fitted and supported to prevent rotation, so that it rotates integrally with the operating shaft 8. When the moderation plate 25 is rotated so that its lock hole 26 is aligned with any one of the lock holes 23, the through hole 10 of the valve body 3 is aligned with any port. At this time, by threading the lock pin 29 through the matching lock holes 26 and 23 and screwing them together, the matching state between the port and the through hole can be maintained. The operating shaft 8 is adapted to be operated manually or by remote control using an operating lever 30.

In such a valve device, when loosening occurs between the valve body 3 and the elastic valve seat 5 due to wear due to use, the valve body 3 is pushed down by the pressing force of the elastic biasing tool 17, and the tapered shape on the outer periphery of the valve body 3 is pushed down. The outer diameter portion of the circumferential surface comes into contact with the surface of the elastic valve seat 5, and there is no loosening. At this time, the adjustment washer 13 is bent and the valve body 3
allow for a decline in If further loosening occurs, increase the thickness of the spacer 15 between the center supporter 14 and the valve housing 1 to reduce the protrusion length of the center supporter 14 into the valve housing 1. This is countered by lowering the valve body 3 further so that the outer diameter surface of the tapered surface of its outer periphery comes into contact with the elastic valve seat 5.

(Effect of the invention) As explained above, in the valve device according to the invention,
A center seat is provided at the axis of the tip of the valve body, and a corresponding center support is provided in the valve box by passing through the valve box, and the center support is connected to the center seat via an adjustment washer. An elastic biasing device is provided on the operating shaft side to urge the valve body toward the center supporter, so that if loosening occurs between the tapered valve body and the elastic valve seat due to use, In this case, the adjustment washer is bent by the pressing force of the elastic biasing device, and the valve body moves toward the center support device, and the larger diameter portion of the tapered peripheral surface of the tapered valve body comes into contact with the elastic valve seat. Looseness can be self-repaired. Furthermore, if a spacer is interposed between the center support and the valve box or the thickness thereof is increased, the protrusion length of the center support into the valve box will be reduced, and the valve body can move toward the center support. This allows the looseness to be repaired. Therefore, according to the present invention, when the valve device is disassembled to repair the valve seat, the valve box, and the valve body, repairs can be made without any troublesome work, and the life of the valve device can be extended. can be measured.

Furthermore, the elastic biasing device includes a V-grooved elastic ring and an elastic O
Since it is composed of a ring, there is no risk of corrosion, and even if it is used in a bad environment, it can be used without deteriorating its function.

[Brief explanation of the drawing]

Fig. 1 is a partial vertical sectional side view of an embodiment of a valve device according to the present invention, Fig. 2 is a cross-sectional view of this valve device, and Fig. 3 is an example of an elastic biasing device used in this embodiment. FIG. 4 is a perspective view of the lock plate constituting the locking means for the operating shaft used in this embodiment, viewed from the top side, and FIG. 5 is a perspective view of the moderation plate, viewed from the bottom side. , FIG. 6 is an enlarged sectional view of the lock pin portion. . 1... Valve box, 2... Valve body fitting taper chamber, 3...
Tapered valve body, 5... Elastic valve seat, 6... Lid body, 8
...Operation shaft, 9A to 9C...Port, 10...Through hole, 11...Center catch, 12...Seat plate, 1
3... Adjustment washer, 14... Center support, 15
...Spacer, 17...Elastic biasing device, 18...V
Groove, 19... V-grooved rubber elastic ring, 20... Rubber elastic O-ring, 21... Backup tool.

Claims (1)

[Scope of utility model registration request] A valve body fitting tapered chamber is provided in the valve body, a tapered valve body is fitted into the valve body fitting tapered chamber so as to be rotatable about its axis, and the valve body fitting tapered chamber has a tapered shape. It has an elastic valve seat that is pressed against the circumferential surface of the valve body for sealing, the entrance of the valve body fitting tapered chamber is closed by a lid body, and the operating shaft for rotating the valve body is connected to the lid body. It is rotatably penetrated and led out to the outside.
A plurality of ports are provided on the side wall of the valve body, and a through hole is provided across the valve body, and by rotating the valve body, the through hole can be aligned with each port or not. In a valve device that is operated to open and close by bringing the valve into a mating state, a center seat is provided at the center of the tip of the valve body, and the center seat is abutted on the valve body via an adjustment washer, and the valve A center support that rotatably supports the valve body is supported through the valve box, and an elastic member is provided between the outer periphery of the operating shaft and the lid body to press and urge the valve body toward the center support. A biasing device is provided, and the elastic biasing device includes at least one pair of V-grooved elastic rings that are fitted around the outer periphery of the operating shaft and each have a V-groove on opposing surfaces, and a biasing device that is arranged between the opposing V-grooves. and an elastic O-ring fitted to the valve body, and the elastic biasing tool is backed up by a backing up tool supported by the lid so that a pressing force acts on the valve body side. Valve device.