JPH0573369U - Ball valve - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a ball valve, and an object thereof is to provide a compact ball valve which can be easily changed to a manual type or an automatic type. A ball valve that opens and closes a ball valve body 3 engaged with the spindle 4 by rotating the spindle 4 and is a fixed body attached to a main body neck portion 2 supporting the spindle 4. 7 is a ball valve in which 7 is detachably fitted, and an actuator mount 10 is detachably fixed to the fixed body 7 in a rotation preventing state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ball valve used in a fluid transportation pipeline for water, oil, gas, chemicals, food, etc. in various industries. More specifically, a structure that can be easily changed to a manual type or an automatic type is provided. The present invention relates to the ball valve that it has.

[0002]

[Prior Art]

 Conventionally, a ball valve is generally prepared as a manual type or an automatic type, and is properly used depending on the purpose.

The manual type is designed to open and close the valve by rotating a ball valve body by manually rotating a handle mounted on a spindle supported on the neck of the valve body. On the other hand, the automatic type is designed to open and close the valve in the same way by rotating the spindle by an actuator attached to the upper part of the valve body.

However, preparing both of the above types increases the cost in terms of productivity, and when changing the manual type ball valve mounted on the piping line to the automatic type, There was a problem that the ball valve had to be completely replaced. In order to solve this problem, studies have been made in the past for changing the manual type ball valve body to an automatic type by using the main body as it is, but one example thereof is Japanese Utility Model Publication No. 62-69677. Is disclosed in.

In the valve disclosed in the above publication, the mount body is clamped and fixed to the manual type (ball) valve body from the upper side and the lower side, and the actuator is attached to the completed mounting device to perform automatic operation. It changes to the expression type.

[0006]

[Problems to be solved by the device]

 However, in the valve disclosed in the above publication, 1. A mounting device must be prepared for each aperture size. 2. The device itself becomes large. 3. It takes time to install the mounting device. There are problems such as.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a ball valve having a structure that can be easily changed to a manual type or an automatic type. Is.

[0008]

[Means for Solving the Problems]

 As a result of various studies, the inventors of the present invention have solved the problems of the conventional art by using the main body of the manual type ball valve and focusing on the neck portion of the main body that supports the spindle. They found out what they could do and completed the present invention.

A feature of the ball valve of the present invention is that it has a structure that can be easily changed to a manual type or an automatic type.

That is, according to the present invention, in a ball valve that opens and closes a ball valve body that is engaged with the spindle by rotating the spindle, the main body neck portion that supports the spindle. The ball valve is characterized in that a fixed body is detachably fitted to the fixed body, and the actuator mounting base is detachably fixed to the fixed body in a rotation preventing state.

The internal structure of the ball valve of the present invention is not particularly limited as long as it is an ordinary structure. Further, the material thereof is not particularly limited and may be any of various metals, various plastics, fiber reinforced plastics and the like.

[0012]

[Action]

 If an actuator is mounted on the actuator mount with the above-mentioned structure, it will function as an automatic ball valve.On the other hand, after removing the actuator mount and the fixed body that fixes it from the valve body neck, mount the handle on the spindle. If it does, it will function as a manual ball valve. As described above, the ball valve of the present invention has a function that can be easily changed to a manual type or an automatic type.

[0013]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings, but it goes without saying that the present invention is not limited to the present embodiment.

FIG. 1 is a longitudinal sectional view of a vinyl chloride resin one-sided union type ball valve according to one embodiment of the present invention, and FIG. 2 is a perspective view thereof. 3 and 4 are exploded perspective views.

1 to 4, reference numeral 1 is a ball valve body. Reference numeral 2 denotes a main body neck portion provided at the center of the upper portion of the main body, and rotatably supports a spindle 4 engaged with a ball valve body 3 arranged inside the main body 1. At the upper end of the main body neck portion 2, there is provided a stopper for 90 ° rotation of the handle 13 (FIG. 3) or a semi-circular arc-shaped projection 5 (FIG. 3) that acts as a rotation prevention for the actuator mount 10. .. Similarly, a partially arcuate engaging projection 6 (FIG. 3) is provided on the outer peripheral portion thereof in parallel with the axial direction. Reference numeral 7 is a plate-shaped fixed body fitted to the main body neck portion 2. A through hole 8 (FIG. 4) for the main body neck 2 is provided in the center of the fixed body 7, and a partial arcuate concave notch 9 (corresponding to the engaging projection 6 in the diametrical direction) is formed. 4) is provided.

A method of mounting the plate-shaped fixed body 7 on the main body neck portion 2 will be described with reference to FIGS. First, the notches 9 provided in the through holes 8 of the plate-shaped fixed body 7 are fitted into both the engaging protrusions 6 of the main body neck 2 (state of FIG. 5), and further down to the engaging protrusions 6. Press down and then rotate 90 degrees. (State of FIG. 6)

Therefore, it is necessary to provide at least the same space as the thickness of the plate-shaped fixed body 7 under the engagement protrusion 6 provided on the main body neck portion 2. When the plate-shaped fixed body 7 is removed from the main body neck portion 2, the above operation may be reversed.

The method of fitting and fixing the plate-shaped fixed body 7 to the main body neck portion 2 may be a method such as a screwing method, a fixing method such as a stop screw, or the like, as long as it is a detachable method. ..

The actuator mount 10 is fixed to the plate-shaped fixed body 7 with bolts and nuts, and is fitted with the main body neck portion 2. A through hole 11 that fits into the main body neck portion 2 is provided in the center portion, and the bottom portion thereof is enlarged in diameter for engaging with the engaging projection 6. (See FIG. 8) Further, on the inner peripheral surface of the through hole 11, there is provided a semi-arc-shaped projecting portion 12 projecting in the radial direction at a position facing the semi-circular projection 5 of the main body neck portion 2. When the actuator mount 10 is fitted to the main body neck 2, the projection 5 and the projection 12 are joined to form a circular shape. Therefore, the actuator mount 10 is prevented from rotating by the protrusion 5 and the protrusion 12.

Needless to say, similarly to the above, the method of fixing the actuator mount 10 may be any method as long as it is a detachable method.

The operation of the ball valve of this embodiment will be described below. In the state shown in FIGS. 1 and 2, the actuator mount 10 is removed from the plate-shaped fixed body 7 by removing the bolts and nuts, and then the plate-shaped fixed body 7 is rotated by 90 degrees, and the partial arc-shaped body is rotated. The notch 9 is fitted to the partially arcuate engagement projection 6 provided on the neck 2 of the main body, and when pulled out and removed, only the ball valve main body 1 is obtained. Next, a handle 13 is attached to the spindle 4 of the main body 1 (see FIG. 3) to obtain a manual type ball valve.

On the other hand, in the state shown in FIGS. 1 and 2, the connecting body 15 for connecting the spindle 4 and the actuator 14 is fitted into the through hole 11 provided at the center of the actuator mounting base 10 and the actuator 14 is attached. When fixed to the mount 10 with bolts and nuts (see Fig. 4), an automatic type ball valve is constructed.

As described above, the ball valve of this embodiment can be easily changed to a manual type or an automatic type, so that the ball valve can be manually or automatically operated according to the purpose of use. You can switch to.

[0024]

[Effect of the device]

 As described above, the following effects can be obtained by using the ball valve of the present invention.

1. An automatic type can be obtained by attaching an actuator to the ball valve of the present invention, and a manual type can be obtained by removing the actuator mount and fixed body and attaching a handle. Therefore, it is possible to freely and easily switch to the manual type or the automatic type according to the purpose of use. 2. If the outer diameter is set so that the neck of the ball valve body has a common diameter, the size of the fixed body and actuator mounting base can be set to one type, which is extremely efficient in terms of productivity and other factors. Get better. 3. Since the device is compact, switching to the automatic type will not be a big deal. 4. Since the fixed body and actuator mount can be easily attached and detached, it is time-saving and efficient.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a ball valve according to an embodiment of the present invention.

2 is a perspective view of the ball valve of FIG. 1. FIG.

FIG. 3 is an exploded perspective view showing a manual type ball valve main body and a handle.

FIG. 4 is an exploded perspective view of an automatic type using the ball valve of FIG.

FIG. 5 is a plan view of relevant parts showing a state in which the fixed body is fitted to the engaging projections of the neck portion of the main body.

FIG. 6 is a plan view of relevant parts showing a state where the fixed body (plate-like) is rotated 90 degrees from the state of FIG. 5 and the fixed body is engaged with the neck portion of the main body.

7 is a plan view of the actuator mount of FIG. 1. FIG.

8 is a bottom view of the actuator mount of FIG. 1. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ball valve main body 2 ... Main body neck 3 ... Ball valve body 4 ... Spindle 5 ... Projection 6 ... Engaging projection 7 ... Fixed body 8 ... Penetration hole 9 ... Notch 10 ... Actuator mount 11 ... Penetration hole 12 ... Projection Part 13 ... Handle 14 ... Actuator 15 ... Connection body

Claims (2)

[Scope of utility model registration request] 1. In a ball valve that opens and closes a ball valve body that engages with the spindle by rotating the spindle, a fixed body is attached to and detached from a neck portion of a main body that supports the spindle. A ball valve, which is freely fitted and has an actuator mounting base fixed to the fixed body in a rotation-preventing state and detachably. 2. An engaging protrusion is provided on an outer peripheral portion of the main body neck portion, while a notch portion corresponding to the engaging protrusion is provided on an inner peripheral surface of a main body neck portion through hole provided in the fixed body. The ball valve according to claim 1, wherein: