KR200269034Y1 - Device for indicating an opening status of butterfly valve - Google Patents

Abstract

The present invention is a butterfly valve in which the disk 12 for opening and closing the flow path is mounted on the body 10 via the shaft 16, extending to one end of the shaft 16 is installed to cooperate with the shaft 26 ), And fixed to the end of the shaft rod 26, mounted on the hemispherical outer surface so as to rotatably receive the indicator 22 and the indicator 22 to indicate the state of opening and closing, only the necessary portion is exposed. It is characterized in that it comprises a display window 24 to be selected to.

Accordingly, it is easy to check the opening and closing of the valve at all times regardless of the direction within the operator's field of view, and the opening rate can be recognized relatively accurately.

Description

Opening status indicator of butterfly valve {Device for indicating an opening status of butterfly valve}

The present invention relates to a butterfly valve, and more particularly, to an opening state display device of the butterfly valve to easily check the opening and closing of the valve regardless of the direction within the operator's field of view.

The valve is applied to the refinery and chemical plant that produces the product through a multi-step process, as well as to all industrial sites equipped with water supply and wastewater purification facilities, and is easily found in the basement floor of general buildings that require heating and water supply and drainage. It is a basic piping element.

Solenoids or extractors may be used to open or close the electrical force when precision is required in the fluid transfer process or when the pipe connection is complicated. In this case, a sensor for converting the opening degree of the valve into an electrical signal may be installed to remotely monitor the operation and perform the opening and closing operation.

However, at the site where such vitalization is usually performed, as well as most other sites, manual observation of the valve must be performed in parallel to prevent an accident due to electrical malfunction. To this end, various display mechanisms have been proposed that can recognize the opening degree of the valve at a relatively short distance, but there is a closed end that is difficult to recognize when the distance or the viewing direction changes to some extent.

Accordingly, an object of the present invention is to provide an opening state display device of a butterfly valve that can easily check the opening and closing of the valve at all times regardless of the direction within the operator's field of view.

In addition, another object of the present invention is to be able to recognize the opening degree relatively accurately with the opening and closing of the valve.

1 is an exploded front view showing a device according to the present invention from a butterfly valve;

Figure 2 is a plan view showing the device according to the present invention with a partial enlargement of the main portion,

Figure 3 is an exemplary view showing a comparison of the operating state of the device according to the present invention.

Explanation of symbols on the main parts of the drawings

10: body 12: disc

14: Gearbox 16: Shaft

18: handle 22: indicator

22a: "OPEN" 22b: "CLOSE"

24: display window 24a: transparent part

24b: opaque 26: shaft

In order to achieve the above object, the present invention provides a butterfly valve in which a disk 12 for opening and closing a flow path is mounted on a body 10 via a shaft 16,

A shaft rod 26 installed to extend and interlock with one end of the shaft 16, a display sphere 22 fixedly integrally with an end portion of the shaft rod 26, and displaying a state of opening and closing on a hemispherical outer surface; And a display window 24 mounted to rotatably receive the display tool 22 so as to select only the necessary portion to be exposed.

The indicator 22 is marked at the position where "OPEN" 22a and "CLOSE" 22b oppose each other in four division regions separated by 90 ° intervals.

In addition, the display window 24 is marked at positions where the transparent portion 24a and the opaque portion 24b face each other in the four-divided regions separated by the 90 ° intervals.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

1 is a front view showing the device according to the present invention in an exploded view from a butterfly valve.

The present invention relates to a butterfly valve in which a disk 12 for opening and closing a flow path is mounted on the body 10 via a shaft 16. 1 illustrates the manner in which the gearbox 14 is provided at the top of the shaft 16 as a butterfly valve. The gearbox 14 is equipped with a worm gear consisting of a worm and a worm wheel 15. The handle 18 and the disk 12 engaged through the worm gear of the gearbox 14 perform a proportional movement.

According to the present invention, the shaft bar 26 is installed to interlock with one end of the shaft 16. The worm wheel 15, which is directly connected to the disk 12, typically has a segment tooth and engages the shaft 26 upwards from its center of rotation. Since the shaft 26 is not subjected to the fluid pressure through the disk 12, the shaft 26 may have a diameter smaller than that of the shaft 16, and may be formed of a synthetic resin material.

In addition, according to the present invention, the indicator 22 is integrally fixed to the end of the shaft 26. The indicator 22 is injection molded in a hemispherical shape using a synthetic resin material and is integrally coupled with the shaft 26. The state of opening and closing is indicated on the outer surface of the hemispherical display sphere 22, and the notation may be selected among letters or colors, or a combination of both.

In addition, according to the present invention, a display window 24 for selecting only the required portion of the display sphere 22 is mounted to rotatably receive the display sphere 22. The display window 24 is molded into a hemispherical shape slightly larger than the display sphere 22 using synthetic resin material. The display window 24 is attached to the upper surface on which the gearbox 14 is mounted on the body 10. The clearance between the display window 24 and the display tool 22 is kept to a minimum. In order to perform the selective display function, the display window 24 is provided with a white portion and a black portion as shown in FIG. 1, and detailed configuration and operation thereof will be described with reference to FIG. 3.

2 is a plan view showing a device according to the present invention with a partial enlargement of the recess;

The indicator 22 according to the present invention is marked at the position where "OPEN" 22a and "CLOSE" 22b are opposed in four divided regions separated by 90 ° intervals. When the disc 12 rotates by 90 °, the open / close state is completely reversed, and the disc 12 is partially open. The indicator 22, which is integrally coupled to the shaft 16 via the worm wheel 15, is marked "OPEN" 22a and "CLOSE" 22b at 90 ° intervals so as to correspond exactly to the rotation of the disk 12. Alternately. The " OPEN " 22a and the " CLOSE " 22b at this time are only examples and can use Korean or Chinese characters.

1 and 2, when the handle 18 is turned while the opening ratio is 0% (closed), the worm 17 and the worm wheel 15 rotate, and the actuation rate when the disk 12 comes to the position of the sign 12 '. Is 100%. Even in the case of progressing in reverse, the indicator 22 is interlocked with the handle 18 and the disk 12 in an accurate proportion.

Figure 3 is an exemplary view showing a comparison of the operating state of the device according to the present invention.

The display window 24 according to the present invention is marked at positions where the transparent portion 24a and the opaque portion 24b face each other in the four-divided regions separated by the 90 ° intervals. The arrangement of the transparent portion 24a and the opaque portion 24b at 90 ° intervals is the same principle as that of the indicator 22 described above. The display sphere 22 is made of a transparent material, and is produced by coloring or painting the opaque portion 24b in two opposing regions among the four divided regions.

FIG. 3 (a) shows a state in which the disk 12 has a degree of opening of 0% in FIG. 2, and the notation of “OPEN” 22a is not hidden by the opaque portion 24b, and only the notation of “CLOSE” 22b is transparent. It can be recognized through (24a). Subsequently, when the handle 18 is slowly turned, the indicator 22 is interlocked with the disk 12 so that the expression "OPEN" 22a appears in the transparent portion 24a and the "CLOSE" 22b disappears in the opaque portion 24b. . Continue to turn the handle 18 so that the disk 12 comes to the position of the sign 12 'as shown in FIG. 2, and the "CLOSE" (22b) notation completely disappears as shown in FIG. It can be seen that%.

In this way, the state displayed through the transparent portion 24a of the display window 24 varies slightly depending on the direction of observation of the operator, but since the opaque portion 24b exists in the 90 ° range, at least the phenomenon of completely covering the transparent portion 24a none. If different colors are colored on the basis of the "OPEN" (22a) notation and the "CLOSE" (22b) notation, it is easier to recognize them.

In addition, the area ratio of the "OPEN" 22a notation and the "CLOSE" 22b notation of the display tool 22 shown by the transparent portion 24a of the display window 24 accurately indicates the opening ratio of the disk 12. That is, if the "OPEN" (22a) and "CLOSE" (22b) appear in the same area, it can be easily recognized that the current opening rate is 50%.

1 and 2 illustrate the use of a segment tooth as the worm wheel 15, but the use of a tooth that can be rotated 360 ° does not affect the operation of the present invention using the indicator 22 and the display window 24.

On the other hand, when the scale is displayed on the circumference based on the center of rotation in the display sphere 22, the opening ratio of the disk 12 can be measured more accurately. Since the display sphere 22 and the display window 24 formed of synthetic resin do not have a fear of weight increase, when the appearance is sufficiently large, the recognition distance increases and the scale is also convenient to be imprinted.

However, since the alignment may vary when the disk 12, the shaft 16, the gearbox 14, the handle 18, and the like are loosened or replaced, and the new mounting is performed, the shaft 26, which is the main component of the present invention, is displayed. It is preferable to mark the mutual engagement position so that the 22 and the display window 24 may be aligned.

The present invention has been shown and described with respect to the butterfly valve, but can also be applied to ball valves, gate valves, or other special valves. For example, in the case of the gate valve in which the valve plate corresponding to the disk 12 is opened and closed up and down, the bevel gear can be added to the rotating handle.

According to the above configuration and operation, the present invention is easy to check the opening and closing of the valve at all times regardless of the direction within the operator's field of view, and the opening rate is also relatively accurate.

It is apparent to those skilled in the art that the present invention is not limited to the embodiments described, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or modifications will have to belong to the utility model registration claims of the present invention.

Claims (3)

In the butterfly valve in which the disk 12 for opening and closing the flow path is mounted on the body 10 via the shaft 16, A shaft rod 26 installed to extend and interlock with one end of the shaft 16; Integrally fixed to the end of the shaft rod 26, mounted on the hemispherical outer surface is mounted to accommodate the indicator sphere 22 and the indicator sphere 22 to indicate the state of opening and closing so as to expose only the necessary portion An opening state display device of a butterfly valve comprising a display window (24). The method of claim 1, The indicator opening (22) is an opening state display device of the butterfly valve, characterized in that the "OPEN" (22a) and "CLOSE" (22b) in the four divided areas separated by 90 ° intervals are displayed in the position opposite. The method of claim 1, The display window (24) is an opening state display device of the butterfly valve, characterized in that marked in the position where the transparent portion (24a) and the opaque portion (24b) in the four divided areas separated by the 90 ° intervals.