JPH01145473A - Valve construction - Google Patents

Abstract

PURPOSE:To obtain a valve with a simple construction in which opening and closing positions of the valve are clearly distinguishable by installing an operating member on the outer peripheral portion of a valve housing so that the operating member can be freely turned, and engaging pins formed in a valve- body driving member with guide grooves formed in the operating member. CONSTITUTION:A ball-shaped valve body 18 is incorporated in a valve housing 11 having openings 14, 15. A cylindrical operating member 21 is inserted on the outer peripheral portion of the valve housing 11. Guide grooves 23a are formed in the operating member 21. Engaging pins 24a are inserted in a valve- body driving member 24 connected to the upper part of the valve body 18, and engaged with the guide grooves 23a. When the operating member 21 is turned, the valve body 18 is also turned by the guide groove 23a and the engaging pins 24a. Thus, the driving mechanism becomes simple. Since a fixed relationship between the operating member 21 and the valve body 18 is established, the opening and closing positions become distinguishable.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a valve structure used to shut off or adjust the flow rate of fluid flowing in piping. related to valve structure.

(Prior Art) Generally, various valves built into piping equipment such as water supply and hydraulic equipment have operating handles that protrude from the outside of the valve housing. A valve body inside the housing is actuated to shut off or adjust the flow rate of fluid in the piping. This type of valve structure requires a large space for the operating handle, making it unsuitable for complex piping equipment that requires space saving. A suitable valve structure has already been filed (see Japanese Patent Application No. 106553/1982).

In this device, as shown in Fig. 3.4, an exterior ring 2 rotatably fitted around the outer circumference of a valve housing 1 is manually rotated around an axis (X-X line in the figure). Then, the operating ring 3 connected to the exterior ring 2 rotates integrally, and the pinion gear 4 meshed with the rack teeth 3a of the operating ring 3 is driven. The pinion gear 4 is pivotally supported by the valve housing 1 with the Y-Y line orthogonal to the X-X line as the center of rotation, and the spherical valve body 5 housed in the valve housing 1 is controlled by the operating amount of the operating ring 3. Rotate accordingly.

When the valve hole 5a formed in the valve body 5 communicates with the flow hole 7 formed by the valve housing 1 and the pair of valve seats 6, fluid (not shown) flows from the pipe PA to the pipe P. That's what I do. That is, a ball valve 8 consisting of a valve body 5 and a valve seat 6 is opened and closed by an operating force from an operating ring 3 via a pinion gear 4, and an operating handle etc. that protrudes from the valve housing 1 to the outside is opened and closed. This valve structure is suitable for saving space in piping equipment.

(Problems to be Solved by the Invention) However, in such a conventional valve structure, the operating force received by the outer ring 2 is transferred to the rack teeth 3 of the operating ring 3.
A and the pinion gear 4 change the direction and transmit the information to the valve body 5. Although the valve structure is compact and saves space, the cost of machining the operating ring 3 and the pinion gear 4 is high. Ta. In addition, since the tooth shape shown in FIG.
Since teeth are formed over the entire circumference of the valve, it is not possible to determine the position at which the valve opening is fully open or fully closed using only the operating ring 3 and pinion gear 4. Therefore, it is necessary to determine the opening/closing position using another means, which is particularly uneconomical for a valve structure whose main purpose is to shut off fluid.

(Purpose of the Invention) Therefore, the present invention solves the above-mentioned problems by driving the valve body to open and close using a member with a simple structure in which the opening and closing positions of the valve are clear, and the main purpose of the present invention is to shut off fluid. The purpose of this invention is to provide a low-cost valve structure suitable for various situations.

(Means for Solving the Problems) In order to achieve the above object, the valve structure of the present invention has an upstream opening and a downstream opening that can be connected to a fluid pipe, and has both openings. a valve housing formed with a fluid passage communicating with the valve housing; a valve body rotatably housed in the valve housing such that the axis of rotation is substantially orthogonal to the fluid passage, and the valve body can open and close the fluid passage by the rotation; A cylindrical operating member rotatably attached to the outer periphery of the valve housing approximately coaxially with the fluid passage, and a support portion and operating member rotatably supported by the valve housing on the rotation axis of the valve body. A valve body driving member that has an engaging portion that engages and drives the valve body to open and close via a support portion while rotating in a predetermined angular range from a valve open position to a valve closed position by rotational operation of the operating member. It is characterized by having the following.

(Function) In the present invention, the valve body drive member is rotated within a predetermined angular range from the valve open position to the valve closed position by the operating force from the operation member applied to the engagement portion of the valve body drive member, and by this rotation, The valve body is driven to open and close via the support portion.

Therefore, the valve body is easily driven to the valve open position or the valve closed position by the valve body driving member having a simple configuration having the supporting portion and the engaging portion as both ends. As a result, a valve structure suitable for applications where the main purpose is to shut off fluid can be provided at low cost due to the simplification of parts.

(Example) Hereinafter, the present invention will be explained based on the drawings.

FIG. 1.2 is a diagram showing an embodiment of a valve structure according to the present invention, and is an example in which the present invention is applied to a ball valve.

First, the configuration will be explained. In FIG. 1.2, 11 is a valve housing, and the valve housing 11 consists of a pair of housing members 12 and 13 that are threadably connected to each other. The valve housing 11 has an upstream opening 14 connectable to the fluid line P, and a downstream opening 15 connectable to the fluid line P2, both openings I4.15 having an internal thread, for example. It is formed.

Further, a fluid passage 16 is formed in the valve housing 11 and communicates with both the openings 14 and 5.
The central part of the valve chamber 17 has an enlarged diameter. The valve chamber I7 includes a spherical valve body 18 and a pair of valve seats 19 facing each other.
is housed, and the valve body 18 is connected to the concave spherical seat 1 of the valve seat 19.
9a, and is held between valve seats 19. Valve body 1
8 is made of a corrosion-resistant metal or the like, and the surface is finished to a predetermined surface roughness. The valve seat 19 is made of a highly self-lubricating resin or the like, and supports the valve body 18 so as to be rotatable while holding the valve body 18 with a predetermined contact pressure.

On the other hand, the valve body 1B and the valve seat 19 have valve holes 18a and 19b having substantially the same diameter as the fluid passage 16, and the valve body 18 is driven by a valve body driving member to be described later to form a Y orthogonal to the fluid passage 16. - When rotating in the direction of the Y line, an opening corresponding to the axis intersection angle of the valve holes 18a and 19a is formed to open and close the valve. That is, the rotation axis of the valve body 18 is aligned with the fluid passage 16.
The valve housing 11 is rotatably housed in the valve housing 11 so as to be substantially perpendicular to the valve housing 11, and the fluid passage 16 can be opened and closed by the rotation.

Reference numeral 21 denotes a cylindrical operating member, and the operating member 21 is rotatably attached to the outer periphery of the valve housing If substantially coaxially with the fluid passage I6. The operating member 21 includes an outer cylinder 22 and an inner cylinder 23 that are fixed to each other or integrally engaged in the rotational direction.
The outer periphery of the outer cylinder 22 is engraved with dovetail knurling and the like. A guide groove 23a extending in the axial direction is formed in the inner cylinder 23.
3a is a retaining pin 24a implanted in the valve body drive member 24.
is engaged. The valve body driving member 24 has an engagement pin 24a that is an engagement portion that engages with the operating member 21, and a support portion 24b that is rotatably supported by the valve housing 21 on the rotation axis of the valve body 18. The support portion 24b of the valve body driving member 24 is provided with a convex portion 24c that protrudes toward the valve body 18 side. The convex portion 24c of the valve body driving member 24 has, for example, a rectangular cross section, and is adapted to rotate integrally with the valve body 18 by being fitted into a recess 18b formed in the valve body 18. Then, when the operating member 21 is manually rotated as shown in the X-X diagram, the engagement pin 24a of the valve body driving member 24 slides into the guide groove 23a of the inner cylinder 23 according to the amount of operation of the operating member 21. When they come into contact with each other, the valve body driving member 24 rotates, and the valve body 18 is rotated along the YY line. Further, the valve body driving member 24 is rotated in a predetermined angle range (angle θ in FIG. 2) by the rotation operation of the operating member 21, and the valve body 18 is in the valve open position where it is fully open and the valve closed position where it is fully closed. In this position, the engagement pin 24a is connected to the circular wall surface 2 of the inner cylinder 23.
3b, and in this state, the valve body drive member 24 functions as a stopper that restricts rotation of the operating member 21. That is, the valve body 24 rotates within a predetermined angular range from the valve open position to the valve closed position, and drives the valve body 18 to open and close via the support portion 24b.

In addition, 25 is a guide ring, and the guide ring 25 is interposed between the valve housing 11 and the operating member 21 on both sides of the valve body drive member 24, and guides the operating member 21. Moreover, 26 is a seal ring, and the seal ring 26 is interposed between the valve housing 11 and the support part 24b of the valve body drive member 24, and maintains the liquid tightness in the valve chamber 17.

Next, the effect will be explained.

First, when the outer cylinder 22 of the operating member 21 is directly grasped and rotated around the axis of the fluid passage 16, the inner cylinder 22 of the operating member 21
3 rotates so that the guide groove 23a and the engagement pin 24a of the valve body drive member 24 come into sliding contact, and the valve body drive member 24 moves into the fluid passage 1.
It rotates around a rotation axis perpendicular to 6. At this time, the valve body 18 is driven via the support portion 24b of the valve body drive member 24, and the valve body 18 aligns the axis of the valve hole 18a with the valve hole 19 of the valve seat 19.
The valve holes 18a and 19a are rotated so as to intersect with the axes of the valve holes 18a and 19a, or to reduce the intersecting angle of the axes of the valve holes 18a and 19a. Therefore, the valve body 18 is easily driven to the valve opening side or the valve closing side by the valve body driving member 24 having a simple configuration having the engagement pin (engaging portion) 24a and the support portion 24b as both ends.

Next, by rotating the operating member 21, the valve body driving member 2
4 rotates to the valve open position or valve close position, the engagement pin 24a comes into contact with the circular wall surface 23b of the inner cylinder 23, restricting the rotation of the operating member 21, and the valve body 18 is fully open or fully closed. stop in the state. Therefore, simply rotating the operating member 21 facilitates opening and closing the valve, and furthermore, the valve open position and valve closed position are determined only by the engagement state of the inner cylinder 23 and the valve body drive member 24. , there is no need to provide a separate means for position determination.

In this way, in this embodiment, the valve body 18 is easily opened and closed using the valve body drive member 24 having a simple configuration, so the mechanism for driving the valve body is simplified and the parts cost is reduced. . In addition, since the valve open position or valve close position is easily determined by the valve body driving member 24, there is no need to separately provide means for determining the position when the main purpose is to shut off fluid, and it is extremely economical. It can be said that the valve structure is suitable for use as a fluid cutoff.

Although a ball valve is used in this example,
The present invention is not limited to this, and can be applied to other valves such as butterfly valves. Further, the valve body drive member is not limited to the shape shown in the drawings, and may be in the form of a link. It may also be engaged with a concave (including holes, slits, etc.) engaging portion or side surface of. Furthermore, the valve body driving member does not necessarily have to function as a stopper for the operating member; if the valve body is rotated within a predetermined angular range between the valve open position and the valve closed position, the operating member will rotate within the other range. A similar effect can be obtained even in a free state.

(Effects of the Invention) According to the present invention, the operation 2 applied to the engaging portion of the valve body driving member
The valve body driving member is rotated within a predetermined angle range from the valve open position to the valve closed position by the operating force from the member, and the valve body is opened and closed via the support part by this rotation, so that the support part and To provide a valve structure suitable for cases where the main purpose is to shut off fluid, etc., in which a valve body can be easily opened and closed by a valve body driving member having a simple configuration with engaging portions as both ends, at a low cost. be able to.

[Brief explanation of the drawing]

FIG. 1.2 is a diagram showing an embodiment of the valve structure according to the present invention, FIG. 1 is a front sectional view thereof, and FIG.
m' line arrow view, Fig. 3.4 is a diagram showing a conventional valve structure, Fig. 3 is a front sectional view thereof, and Fig. 4 is an IV-
It is a view taken along the line IV'. 11...Valve housing, 14...Upstream opening, 15...Downstream opening, 16...Fluid passage, 18... ... Valve body, 21... Operating member, 24... Valve body driving member, 24a... Engagement pin (engaging portion), 24b...
...Support part, P+, Pz...Fluid pipe.

Claims (1)

[Claims] A valve housing that has an upstream opening and a downstream opening that can be connected to a fluid pipe, and a fluid passage that communicates with both openings, and a valve housing that has a rotation axis substantially perpendicular to the fluid passage. a valve body rotatably housed in the valve body and capable of opening and closing a fluid passage by the rotation; a cylindrical operating member rotatably attached to the outer circumference of the valve housing substantially coaxially with the fluid passage; It has a support part that is rotatably supported by the valve housing on the rotation axis of the valve body and an engagement part that engages with the operating member, and the valve can be moved from the valve open position to the valve closed position by rotating the operating member. A valve structure characterized by comprising: a valve body driving member that opens and closes a valve body via a support part while rotating within a predetermined angular range.