JP4805582B2 - valve - Google Patents

Description

  The present invention mainly relates to a valve used by being buried in the ground.

  For valves that are embedded and used in the ground, the built-in valve is opened and closed by turning the tip protruding from the surface of the main body of the stem. It is important to be able to carry out smoothly and reliably in an environment where there is. Therefore, the following operation cap for valves is disclosed in Patent Document 1 described later.

  That is, the operation cap includes a flat plate-like retainer retainer and a cap portion connected to the stem, and the retainer retainer is fixed to the valve so that the stem of the valve penetrates the retainer retainer. is there. A cylindrical portion that is longer than the length of the stem is erected around the retainer retainer opening, and the periphery of the tip portion that penetrates the retainer retainer opening of the stem is surrounded by the tubular portion. .

  The cap portion described above has an annular flange portion projecting from the base end side of the columnar fitting portion to be fitted into the cylindrical portion, and has an inverted convex shape in the longitudinal sectional view. In the center of the end, a prism portion is erected on the same axis as the central axis of the fitting portion. Moreover, the recessed part which fits a stem internally is provided in the front-end | tip of a fitting part, and the bolt hole which penetrates the said square pillar part and a fitting part and reaches a recessed part is opened. Then, the fitting portion is fitted into the cylindrical portion, and the concave portion is externally fitted to the tip of the stem. In this state, the bolt through which the bolt hole is inserted is screwed into the female screw portion provided at the tip of the stem. Thus, the cap portion is fixed to the stem.

  Further, a dust seal using an O-ring is externally fitted between the flange portion of the cap portion and the cylindrical portion of the retainer presser, and the fitting portion and the cylindrical portion are provided on the outer peripheral surface of the fitting portion. An O-ring that closes the gap with the part is externally fitted.

  By the way, a stopper for stopping the rotation of the cap portion protrudes from the inner peripheral surface of the cylindrical portion provided in the retainer presser described above, and the tip of the fitting portion provided in the cap portion contacts the stopper. The contact part is protrudingly provided. Then, a wrench or the like is fitted to the prismatic part, and the cap part is rotated forward and backward until the abutting part comes into contact with the stopper, so that the valve in the valve is opened and closed through the stem fixed to the cap part. It has become.

In such an operation cap, the periphery of the stem is surrounded by the retainer presser and the cap portion to prevent dirt and the like from entering the stem mounting portion of the valve, and the operation is performed by the dust seal and the O-ring described above. Since it is possible to prevent earth and sand from entering the cap, the operation of rotating the stem can be performed smoothly and reliably in an environment where earth and sand are present around the cap.

Japanese Patent Laid-Open No. 11-2358

  However, in such a valve provided with the conventional operation cap, there is a problem that the operation of mounting the operation cap is complicated and the structure of the operation cap is complicated, and the cost of parts required for the operation cap is high. there were. In addition, since the stem is surrounded by the operation cap, it is difficult to achieve slimming of the entire valve provided with the operation cap.

  The present invention has been made in view of such circumstances, and even in an environment where earth and sand are present in the surroundings, the operation of rotating the stem can be performed smoothly and reliably, and can be easily performed. A low-profile and slimmer valve with a simple structure.

According to the first aspect of the present invention, a ball chamber is formed in the flow path of a valve main body provided with a flow path through which a fluid flows, and the open / close valve opens and closes the flow path in the ball chamber. And an end of an adjusting rod for adjusting the opening degree of the on-off valve is protruded into the valve body so as to be rotatable. A rotation restricting portion is formed at an appropriate position in the shape of a plate having a diameter larger than that of the adjustment rod and restricts the rotation range of the adjustment rod. A recess for fitting the limiter so as to be rotatable is provided so as to face the ball chamber, and the rotation limiter abuts at an appropriate position on the track in the recess where the rotation limiter rotates. stopper Ri projecting tare, moreover, the valve body near one end of the short-sized cylindrical body portion parts The cap mounting portion is formed by reducing the diameter from the other portion, and a ball chamber for inserting the ball as the on-off valve is formed inside the substantially central portion in the axial length direction, and at the portion near the other end. A water absorption pipe is connected, and further, a first opening leading to the ball chamber is provided in a peripheral surface of the main body portion and facing the ball chamber, and a cylindrical shape is formed around the first opening. A water discharge portion is erected, and a second opening having an inner diameter smaller than the inner diameter of the first opening is provided on the peripheral surface of the main body portion, on the opposite side of the water discharge portion, to the ball chamber. A cylindrical stem receiving portion is provided to hold the adjustment rod from the periphery of the second opening, and a portion of the body portion around the second opening slightly protrudes outward. And a recess into which the rotation restricting portion is rotatably fitted is provided in the bow. Characterized by providing to communicate with the use chamber.

According to the present invention, any without taking measures on the outer surface side of the valves body, it is prevented that gravel or the like from entering from the outside between the rotation restricting portion and the stopper, environment with a gravel or the like around Even underneath, the operation of rotating the adjustment rod can be performed smoothly and reliably. In addition, since the valve can be manufactured with a simple configuration in which the rotation restricting portion and the stopper are disposed inside the valve body, the valve can be manufactured at a low cost and can be further slimmed. In addition, there is no possibility that the rotation restricting portion and the stopper will interfere with the opening / closing operation of the on-off valve, and the plate-like rotation restricting portion is in sliding contact with the bottom surface of the recess to prevent the adjustment rod from coming off smoothly. The adjustment rod can be rotated.

  In the valve according to the present invention, an opening / closing valve for opening and closing the flow path is rotatably disposed in the flow path of the valve body provided with a flow path through which fluid flows. One end of an adjustment rod for adjusting the opening of the valve is protruded into the valve body so as to be rotatable, and the rotation restricts the rotation range of the adjustment rod to an appropriate position on one end of the adjustment rod. A restricting portion protrudes, and a stopper with which the rotation restricting portion abuts is provided at an appropriate position on the inner surface of the valve main body on the orbit where the turning restricting portion rotates.

  The rotation restricting portion is formed in a plate shape, and a concave portion is provided in the valve body so as to fit the rotation restricting portion so as to be rotatable, and the stopper is disposed in the concave portion. It is protruding.

  Hereinafter, the valve according to the present invention will be described in detail with reference to the drawings.

  1, FIG. 2, and FIG. 3 are a front view, a side sectional view, and a partially broken plan view of a valve according to the present invention, showing a case where the valve is applied to a water faucet. As shown in FIGS. 1 to 3, the valve is freely rotatable with a ball (open / close valve) 5 that opens and closes a flow path in a body (valve body) 1 that is molded so that a required flow path is disposed therein. The base 5 of the stem (adjusting rod) 6 is fitted to the ball 5 and the flow path is opened and closed by rotating the ball 5 forward and backward by the stem 6.

  The ball 5 has a flat portion opposed to the peripheral surface of the column body and has one end of a substantially oval base body 50 formed in a spherical shape and the other end formed into a truncated pyramid shape. The shoulder at the other end is spherical. A groove portion 53 for fitting the base end portion of the stem 6 is recessed at one end of the base body 50. A first through hole 51 is formed at the center position in the axial length direction of the base body 50 so as to pass through both flat portions opposed to the peripheral surface. The first through hole 51 and the other end of the base body 50 described above are provided. The opened opening communicates with the second through hole 52. The water that has flowed into the first through hole 51 can be discharged from the second through hole 52.

  On the other hand, the stem 6 has a minus driver head-shaped wrench fitting portion 63 projecting from the center of the tip of the columnar housing 61 to prevent intrusion of dirt and the like from the outside on the peripheral surface of the housing 61. The annular grooves 62 and 62 into which the annular gland packings 9 and 9 are inserted are provided at a distance in the axial length direction of the housing 61. At the base end portion of the casing 61, a shape obtained by longitudinally cutting about 1/3 of a round disc having a diameter larger than the diameter of the casing 61, and a rotation limiting portion 65 that limits the rotation of the stem 6 are provided. In the center of the rotation restricting portion 65, a plate-like fitting portion 64 that fits into the groove portion 53 of the ball 5 is provided upright.

  FIG. 4 is a side sectional view of the body 1 shown in FIGS. 1 to 3, in which 12 is a short cylindrical main body. A portion near one end of the main body portion 12 is reduced in diameter from the other portions to form a cap attachment portion 11, and a screw thread is formed on the outer peripheral surface of the cap attachment portion 11.

  The interior of the substantially central portion of the main body portion 12 in the axial direction is a ball chamber 13 into which the above-described ball 5 (see FIG. 2) is fitted so that the central axis of the ball 5 is substantially orthogonal to the central axis of the main body portion 12. The periphery of the ball chamber 13 has an inner diameter smaller than the inner diameter of the ball chamber 13, and seal members 10 and 10 for holding the ball 5 and the body 1 in a watertight state as will be described later (FIG. 2). A sealing chamber 14 for fitting a reference) is formed concentrically with the ball chamber 13 and the central axis. The portion near the other end of the main body 12 connects the water absorption pipe 8 (see FIGS. 1 and 2) to the main body 12 and holds the sealing members 10 and 10 fitted in the sealing chamber 14. It is set as the holder fitting part 15 which fits the holder 7 (refer FIG. 2).

  On the other hand, a first opening 21 communicating with the ball chamber 13 is provided on the peripheral surface of the main body 12 and facing the ball chamber 13, and a cylindrical shape is formed around the first opening 21. The water discharger 17 is erected. In addition, a second opening 22 having an inner diameter smaller than the inner diameter of the first opening 21 is provided on the circumferential surface of the main body 12 on the opposite side of the water discharger 17 to the ball chamber 13. A cylindrical stem receiving portion 16 for penetrating and holding the stem 6 from the periphery of the second opening 22 is erected on the same axis as the central axis of the water discharge portion 17.

  By the way, the portion around the second opening 22 of the main body 12 is slightly protruded to the outside, and the above-described rotation restricting portion 65 of the stem 6 is fitted into the inner surface of the main body 12 so as to be rotatable. A recess 18 is provided in such a manner as to communicate with the ball chamber 13 described above.

  FIG. 5 is a partial front view including the fitting recess 18 on the inner surface of the main body 12. As shown in FIG. 5, a second opening 22 is provided on the inner peripheral surface of the main body 12 facing the ball chamber 13 (see FIG. 4) so as to penetrate the casing 61 (see FIG. 4) of the stem 6 described above. There is an annular fitting recess 18 around the second opening 22. A stopper 19 having a trapezoidal shape in plan view is provided at an appropriate position in the circumferential direction of the fitting recess 18 in such a manner that its upper bottom protrudes into the fitting recess 18. When 65 (see FIG. 2) is rotated forward and backward, and one side edge or the other side edge of the end face of the rotation restricting portion 65 comes into contact with the stopper portion 19, the rotation of the stem 6 is prevented. It is like that.

  As shown in FIGS. 1 to 3, annular seal members 10, 10 are provided on both the side edges of the first opening 21 and the second opening 22 in the sealing chamber 14 of the body 1. The members 10 and 10 are fitted so that the central axis passing through the members 10 and 10 coincides with the central axes of the first opening 21 and the second opening 22. Further, a casing 61 of the stem 6 in which the gland packings 9 and 9 are fitted in the annular groove portions 62 and 62 is inserted into the stem receiving portion 16 so that the wrench fitting portion 63 protrudes from the stem receiving portion 16. The rotation restricting portion 65 of the stem 6 is fitted in the fitting recess 18 described above. Further, the ball 5 is fitted into the ball chamber 13, the fitting portion 64 of the stem 6 is fitted into the groove portion 53 of the ball 5, and the second through hole 52 of the ball 5 faces the water discharge portion 17 of the body 1. The gap between the ball 5 and the body 1 is held in a watertight state by the seal members 10 and 10.

  A holder 7 having one end of a cylindrical water absorption pipe 8 fitted and fixed is fitted in a holder fitting portion 15 of the body 1 in a watertight state, and the opening of the cap attachment portion 11 of the body 1 is formed in a flat plate shape. The cap 3 is screwed onto the cap mounting portion 11 after being closed in a watertight state by the gasket 4.

  Next, the operation of such a valve will be described.

  FIG. 6 is an explanatory diagram for explaining a front view internal state in a fully opened state of the valve, and FIG. 7 is an explanatory diagram for explaining a side view internal state in a fully opened state of the valve. FIG. 8 is an explanatory diagram for explaining a front view internal state in a fully closed state of the valve, and FIG. 9 is an explanatory diagram for explaining a side view internal state in a fully closed state of the valve. In these drawings, parts corresponding to those shown in FIGS. 1 to 3 are given the same reference numerals and explanation thereof is omitted.

  As shown in FIGS. 6 and 7, when the valve is fully opened, one side edge 65 a of the end face of the rotation restricting portion 65 of the stem 6 abuts against the stopper portion 19, and the fitting portion 64 of the stem 6. Is a horizontal posture, and the central axis of the first through hole 51 of the ball 5 coincides with the central axis of the water absorption pipe 8. Accordingly, the water that has flowed into the body 2 from the water absorption pipe 8 passes through the first through hole 51 and the second through hole 52 of the ball 5 and is discharged from the water discharge portion 17 of the body 2.

  On the other hand, as shown in FIGS. 8 and 9, when the valve is in the fully closed state, the other side edge portion 65 b of the end surface of the rotation restricting portion 65 of the stem 6 contacts the stopper portion 19, and the fitting of the stem 6 is performed. The joint portion 64 is in a vertical posture, and the central axis of the first through hole 51 of the ball 5 and the central axis of the water absorption pipe 8 are substantially orthogonal to each other, and the circumferential surface of the ball 5 faces the water absorption pipe 8. Therefore, the water that has flowed into the body 1 from the water suction pipe 8 cannot enter the first through hole 51 of the ball 5, and water discharge from the water discharge portion 17 of the body 1 is stopped.

  As described above, the rotation operation of the stem 6 is performed from the posture in which one side edge portion 65a of the end surface of the rotation restricting portion 65 abuts on the stopper portion 19 provided inside the body 1 and the other end surface of the rotation restricting portion 65. The rotation angle is limited to a range of approximately 90 ° until the side edge portion 65b comes into contact with the stopper portion 19.

  On the other hand, intrusion of earth and sand or the like into the body 1 from the gap between the stem 6 and the body 1 is prevented by the gland packings 9 and 9 that are externally fitted to the casing 61 of the stem 6.

  As described above, the body 1 is provided with the rotation restricting portion 65 for restricting the rotation of the stem 6 and the stopper portion 19 with which the rotation restricting portion 65 comes into contact with the rotation of the stem 6. Since the gland packings 9 and 9 externally fitted to the housing 61 of the 6 prevent the intrusion of earth and sand from the gap between the stem 6 and the body 1 into the inside of the body 1, some measures should be taken on the outer surface side of the body 1. In addition, it is possible to prevent earth and sand from entering from the outside between the rotation restricting portion 65 and the stopper portion 19, and to rotate the stem 6 even in an environment where there is earth and sand around. Smooth and reliable. In addition, since the valve can be manufactured with a simple configuration in which the rotation restricting portion 65 and the stopper portion 19 are disposed inside the body 1, the valve can be made slim in addition to being inexpensive.

  In addition, a stopper 19 is projected in a fitting recess 18 provided on the inner peripheral surface of the main body 12 facing the ball chamber 13, and a rotation restricting portion 65 of the stem 6 is fitted to the stem 6. Therefore, there is no possibility that the rotation restricting portion 65 and the stopper portion 19 will interfere with the opening / closing operation of the ball 5 serving as the opening / closing valve.

  In the present embodiment, the case where the stem 6 is provided with the plate-like rotation restricting portion 65 has been described. However, the present invention is not limited to this, and for example, a stopper is provided on the peripheral surface of the casing 61 of the stem 6. You may provide two convex parts which can contact | abut the part 19 in the circumferential direction at a required distance apart. In this case, a plate-like portion that is brought into sliding contact with the bottom surface of the fitting recess 18 may be provided on the casing 61 of the stem 6 so that the stem 6 can be smoothly rotated.

  On the other hand, as shown in the present embodiment, when the plate-like rotation restricting portion 65 is provided on the stem 6, the rotation restricting portion 65 is in sliding contact with the bottom surface of the fitting recess 18, so that the stem 6 can be removed. The stem 6 can be smoothly rotated while preventing.

It is a front view of the valve | bulb which concerns on this invention. It is side sectional drawing of the valve | bulb which concerns on this invention. It is a partially broken top view of the valve | bulb which concerns on this invention. FIG. 4 is a side sectional view of the body shown in FIGS. 1 to 3. It is a partial front view containing the fitting recessed part of a main-body part inner surface. It is explanatory drawing explaining the front view internal state in the fully open state of a valve | bulb. It is explanatory drawing explaining the side view internal state in the fully open state of a valve | bulb. It is explanatory drawing explaining the front view internal state in the fully closed state of a valve | bulb. It is explanatory drawing explaining the side view internal state in the fully closed state of a valve | bulb.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 3 Cap 4 Gasket 5 Ball 6 Stem 7 Holder 8 Water absorption pipe 9 Gland packing 10 Seal member 11 Cap attachment part 12 Main body part 13 Ball room 14 Sealing room 15 Holder fitting part 16 Stem receiving part 17 Water discharge part 18 Fitting Joint recess 19 Stopper portion 21 First opening 22 Second opening 50 Base 51 First through hole 52 Second through hole 53 Groove portion 61 Housing 62 Annular groove portion 63 Wrench fitting portion 64 Fitting portion 65 Rotation limiting portion

Claims (1)

A ball chamber is formed in the flow path of the valve body having a flow path through which a fluid flows, and a ball as an opening / closing valve for opening and closing the flow path is rotatably disposed in the ball chamber. And one end of an adjustment rod for adjusting the opening of the on-off valve is pivotably protruded into the valve body,
A gland packing is mounted in the middle of the adjustment rod, and is formed into a plate shape having a diameter larger than that of the adjustment rod at an appropriate position of one end of the adjustment rod, and the rotation restricts the rotation range of the adjustment rod. A restricting portion is provided so as to be provided in the inside of the valve main body so as to face the ball chamber so that the turning restricting portion can be fitted to the turning restricting portion. at an appropriate position on the track in said recess for moving, Ri stopper projecting tear rotation restricting portion abuts,
Moreover, the valve body is
For a ball in which a part near one end of a short cylindrical main body is reduced in diameter from the other part to form a cap mounting part, and a ball as the on-off valve is inserted inside a substantially central part in the axial direction. A chamber is formed, and a water absorption pipe is connected to a portion near the other end,
Further, a first opening communicating with the ball chamber is provided in a peripheral surface of the main body portion and facing the ball chamber, and a cylindrical water discharge portion is provided upright from the periphery of the first opening. A second opening having an inner diameter smaller than the inner diameter of the first opening is provided on the peripheral surface of the main body portion at a position opposite to the water discharge portion and communicating with the ball chamber. A cylindrical stem receiving portion that holds the adjustment rod in a state of penetrating from the periphery of the body, and further, the portion around the second opening of the main body portion is slightly protruded outward to restrict the rotation. A valve characterized in that a concave portion in which the portion is rotatably fitted is provided so as to communicate with the ball chamber .

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