KR20200018539A - Butterfly valve with sealing control function - Google Patents

Abstract

The present invention relates to a butterfly valve having a sealing control function. The butterfly valve includes: a valve body having a pipe-shaped structure; a valve disc controlling the opening degree of a valve while rotating in the valve body; a ring-shaped disc sheet provided on the outer edge of the valve disc to perform a sealing function while coming in contact with the inner edge surface of the valve body; a ring-shaped sheet grand assembled with one side surface of the valve disc to fix the disc sheet to the valve disc; and a sealing control means provided on the other side of the valve disc to perform a water leak cutoff control function by pressing the disc sheet from a plurality of positions in a circumferential direction. Therefore, since a water leak can be solved through a simple structure, convenience in valve repair can be increased, and economic feasibility and reliability can be improved.

Description

Butterfly valve with sealing control function

The present invention relates to a valve for opening and closing a pipeline, and more particularly to a butterfly valve for adjusting the flow rate by rotating the valve disk provided in the valve body.

Butterfly valve is a valve that can control the flow rate by opening and closing the valve in accordance with the rotation operation of the valve disk having a disc shape.

The butterfly valve is installed on the pipeline and consists of a valve body having a flow path formed therein, and a valve disc that opens and closes the flow path of the valve body while rotating about the drive shaft by the power of the drive source.

The butterfly valve has a body seat protruding from the inner surface of the valve body so as to maintain airtightness when the valve is closed, and a disk seat that is in close contact with the body seat around the valve disc.

Here, the disk seat is made of a material such as metal or rubber, and is configured to be mounted on the circumferential surface of the valve disk by a seat gland.

Such a disc sheet is rapidly reduced in watertight function as wear and the like occurs over time. Accordingly, in order to repair the disk seat, etc., the pipes are separated and repair or replacement work is frequently performed, and thus, the maintenance cost is excessively expended.

Due to this problem, the technology described in Korean Patent Registration No. 10-1126412 and Korean Registration No. 20-0334680 proposes a multi-disk seek structure, but in this case, the watertight function can be extended to some extent, but the overall structure becomes complicated. There is also a problem of falling economic efficiency.

Republic of Korea Patent Registration 10-1126412 Republic of Korea Registration Room 20-0334680

The present invention has been made to solve the above problems, by using a control bolt for compressing the disk seat, such as to solve the problem of leakage by a simple structure to solve the problem when the leakage occurs, the convenience of valve repair It is an object of the present invention to provide a butterfly valve having a sealing control function to increase the cost, and improve the economy and reliability.

Butterfly valve having a sealing control function according to the present invention for realizing the above object is a valve body having a tubular structure; A valve disc that rotates within the valve body to control the opening and closing amount of the valve; An annular disk seat provided around an outer circumference of the valve disk to perform a sealing function while contacting an inner circumferential surface of the valve body; An annular seat gland which is assembled to one side of the valve disc to fix the disc seat to the valve disc; It is provided on the other side of the valve disk is characterized in that it comprises a sealing control means for compressing the disk seat in a plurality of positions in the circumferential direction to perform the leakage blocking control function.

Here, the sealing control means comprises a control screw hole penetrated in the direction of the disk seat from the other side of the valve disk, and a control bolt which is fastened to the control screw hole to press the disk seat according to the degree of tightening It is desirable to be.

The control bolt may be configured such that the end of the bolt for pressing the disk sheet has a round structure.

Alternatively, the control bolt may be configured such that the end of the bolt for pressing the disk sheet has a flat structure.

It is preferable that a plurality of the sealing control means are provided at equal intervals in the circumferential direction of the valve disc.

In addition, a butterfly valve having a sealing control function according to the present invention for realizing the above object is a valve body having a tubular structure; A valve disc that rotates within the valve body to control the opening and closing amount of the valve; An annular disk seat provided around an outer circumference of the valve disk to perform a sealing function while contacting an inner circumferential surface of the valve body; A control screw hole formed in the valve disk and penetrating in the disk seat direction at a plurality of positions in the circumferential direction; It is fastened to the control screw hole, it characterized in that it comprises a control bolt for compressing the disk sheet according to the fastening degree to perform the leakage blocking adjustment function.

The control bolt may be configured by installing an additional member having an elastic portion at the end in contact with the disk seat.

The main problem solving means of the present invention as described above, will be described in more detail and clearly through the example of the 'details for the implementation of the invention', or the accompanying 'drawings' to be described below, wherein In addition to the main problem solving means as described above, various problem solving means according to the present invention will be further presented and described.

The butterfly valve having a sealing control function according to the present invention is configured to control the airtight state by pressing the disk seat at a plurality of positions in the circumferential direction of the valve disk, so that leakage occurs due to wear, deformation, etc. of the disk seat. In this case, the valve disk of the leak generating portion is compressed and deformed, thereby maintaining the airtight performance easily.

That is, the present invention can solve the problem of water leakage caused by abrasion, deformation, etc. of the disc seat by simply tightening the control bolt properly without disassembling the disc seat when the sealing control means is constituted by the control bolt. Accordingly, the convenience of valve repair is increased, and economics and reliability of the maintenance and repair of the valve are also improved.

1 is a cross-sectional view showing a butterfly valve having a sealing control function according to an embodiment of the present invention.
2 and 3 is a detailed view of the main portion showing a butterfly valve having a sealing control function according to an embodiment of the present invention,
2 is a state diagram before tightening the control bolt,
3 is a state in which the control bolt is fastened.
4 is a view showing a disk seat of a butterfly valve having a sealing control function according to an embodiment of the present invention, showing a crimp position of the control bolt.
5 to 7 are views showing various embodiments of the control bolt in the present invention.
8 to 11 are detailed views of main parts showing a state in which the present invention is applied to various types of disc sheets.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 4 are views showing a butterfly valve having a sealing control function according to an embodiment of the present invention, Figure 1 is a cross-sectional configuration of the valve, Figures 2 and 3 is a detailed view of the main portion of the valve, 4 is a front view of the disc seat showing the compression position of the control bolt.

Referring to these drawings, a butterfly valve having a sealing control function according to an embodiment of the present invention, the valve body 10 having a tubular structure, and the opening and closing the valve while rotating in the valve body 10 Valve disk 20, an annular disk seat 30 mounted around the valve disk 20 to perform a sealing function while contacting the inner circumferential surface of the valve body 10, and one side surface of the valve disk 20 And a seat gland 40 having an annular structure which is provided on the side to secure the disc seat 30 in close contact with the valve disc 20, and is provided on the other side of the valve disc 20 at a plurality of positions in the circumferential direction. It is configured to include a sealing control means 50 for pressing the seat 30 to perform the leakage blocking function.

Referring to the main components of the butterfly valve according to the present invention in detail as follows.

First, the valve body 10 is formed in a substantially cylindrical structure, and is installed between the conduits through which fluid flows, while supporting the valve disk 20 to rotate and the valve disk 20 to the outside. It is configured to be installed a valve control device or a valve drive device for rotating.

An inner circumferential surface of the valve body 10 may be a body seat 15 to which the valve disk 20 is in contact. The body seat 15 is preferably configured on the inner surface of the protrusion of the inner circumferential surface of the valve body 10.

Next, the valve disk 20 is made of a disk-shaped structure is installed in a rotatable structure in the valve body 10. Since the rotary actuation structure of the valve disc 20 is well known, the drawings and detailed description thereof will be omitted.

The valve disk 20 is configured to open and close the valve or adjust the flow rate according to the rotation position (or angle).

In particular, the circumferential surface side of the valve disk 20 is configured such that the disk seat 30, the seat gland 40 for fixing it, a sealing control means 50 for leak control, and the like can be installed.

Next, the disk seat 30 has an annular (or ring) structure to be in contact with the body seat 15 of the valve body 10 to be kept airtight while being mounted on the outer circumference of the valve disc 20. Perform the function.

Various types of the disc sheet 30 may be used, and the type of the applicable disc sheet 30 will be described below with reference to FIGS. 8 to 11.

Next, the seat gland 40 has an annular structure and is a component part for fixing the disc seat 30 to the valve disc 20 in close contact with the valve disc 20. The valve disc 20 may be fastened using a fastening means such as a gland bolt 45. It is preferable that the configuration is made of).

Next, the sealing control means 50 is configured to adjust the airtightness by pressing the disk sheet 30 on the opposite side of the seat gland 40 about the disk sheet 30. That is, the airtightness can be adjusted by pressing in the direction of the disk seat installation surface 21.

Such sealing control means 50 is provided at several places in the circumferential direction of the valve disc 20 to compress the strain of the disc seat 30 so that the airtight state can be adjusted when the disc seat 30 is worn out.

For this purpose, the sealing control means 50 is a control formed through the opposite valve disk 20 in which the seat grant 40 is installed in the direction of the long axis of the disk seat installation surface 21 in contact with the disk seat 30. It is preferable that the screw hole 52 and the control screw hole 52 is fastened to the control bolt 55 to compress the disk seat 30 in accordance with the degree of fastening.

In addition, it is preferable that a plurality of sealing control means 50 composed of the control screw hole 52 and the control bolt 55 are provided at equal intervals in the circumferential direction of the valve disc 20.

That is, the sealing control means 50 is installed so as to compress various parts of the disk seat 30. In FIG. 4, the sealing control means 50 is installed at eight places so that the disk seat 30 is 8 at 45 degree intervals. Shows a structure that can squeeze dog parts. The installation position and interval setting of the sealing control means 50 can be appropriately selected and configured according to the implementation conditions.

Meanwhile, FIGS. 5 to 7 are views showing various embodiments of the control bolt 55 in the present invention.

The control bolt 55 constituting the sealing control means 50 can be configured to have a variety of structures and shapes, as shown in Figure 5 can be formed so that the end of the bolt 56 has a round structure (56a) 6, the end of the bolt 57 may be configured to have a planar structure (57a).

In addition, as shown in FIG. 7, the bolt 58 may be configured by installing an additional member 58a having elasticity, such as a rubber material, at an end contacting the disk sheet 30.

The end shape and structure of the control bolt 55 may be appropriately selected and configured according to the type, shape, etc. of the disc seat 30, and modified in various shapes and structures in addition to the shape and structure illustrated in FIGS. It is also possible to configure.

5 and 6 illustrate a bolt structure of a straight structure in which the head portion of the control bolt 55 is not extended. The control bolt 55 of the straight structure may adjust the depth of tightening of the control bolt 55 using a tool in a state in which the head is inserted into the control screw hole 52. Of course, the head portion is preferably formed with a tool coupling groove, such as '+' or '-' shape for use of the tool as illustrated in the figure.

In addition, as shown in FIG. 7, the head portion 58b of the control bolt 55 may be expanded. At this time, the head portion 58b of the bolt 58 is exposed while the control bolt 55 is fastened to the control screw hole 52. At this time, the head portion 58b of the bolt can also form a tool coupling groove such as the '+' or '-' shape described above, and can be rotated using a tool by forming a hexagonal shape or the like as a conventional bolt. It is also possible to configure so that.

The sealing control means 50 according to the present invention as described above is applicable to the airtight control of the various types of disk seat 30.

8 to 11 are detailed views of main parts showing a state in which the present invention is applied to various types of disk sheets 30.

FIG. 8 shows the case where the disc sheet 30 is composed of the laminated sheet 31, and FIG. 9 shows the case where the disc sheet 30 is composed of the Teflon sheet 32, and FIG. 10 shows the disc sheet 30 is the rubber sheet ( FIG. 11 shows the application state when the disc sheet 30 is composed of the solid metal sheet 34, respectively.

In addition, the seat gland 40 may be applied to and used to adjust the airtightness of various other disc seats 30 mounted on the valve disc 20.

The airtight adjustment operation of the disc seat 30 using the sealing control means 50 as mentioned above is demonstrated.

In the initial use of the butterfly valve, the disc seat 30 fixed by the seat gland 40 adheres to the body seat 15 of the valve body 10 to maintain airtightness. At this time, the control bolt 55 is preferably assembled in a loose fastening state to the control screw hole (52).

However, when the butterfly valve is used for a long time, the disc seat 30 may be worn or deformed, thereby causing a portion that may not be completely adhered to the body seat 15, thereby causing leakage.

When the leakage occurs as described above, when the leakage occurs and the like, and tightens the control bolt 55 to an appropriate tightening depth, the end of the control bolt 55 is pressed while pushing the disk sheet 30, the compressed disk sheet The portion 30 is deformed while being expanded to some extent. The deformed and expanded disk seat 30 portion is in close contact with the body seat 15 portion of the valve body 10 can be kept airtight.

Therefore, in the present invention, when the disc seat 30 is worn or deformed as described above, water leakage may be easily solved by appropriately adjusting the fastening depth of the control bolt 55 positioned at the water leakage generating portion. have. Of course, it is also possible to ensure a more reliable airtight holding function for a long time when the tightening depth of the control bolt 55 is properly set even in the initial use of the butterfly valve.

As described above, the technical idea described in the embodiments of the present invention may be implemented independently, or may be implemented in combination with each other. In addition, the present invention has been described through the embodiments described in the drawings and detailed description of the invention, which is merely exemplary, and those skilled in the art to which the present invention pertains various modifications and equivalent other embodiments therefrom It is possible. Therefore, the technical protection scope of the present invention will be defined by the appended claims.

10: valve body 15: body seat
20: valve disc 30: disc seat
40: seat grand 45: grand bolt
50: sealing control means 52: control screw hole
55, 56, 57, 58: control bolt

Claims (3)

A valve body having a tubular structure; A valve disc that rotates within the valve body to control the opening and closing amount of the valve; A body seat formed on the inner surface of the protrusion of the inner circumferential surface of the valve body and in contact with the valve disk; An annular disk seat provided around an outer circumference of the valve disk to perform a sealing function while contacting the body seat; An annular seat gland assembled to one side of the valve disc to fix the disc seat to the valve disc; A plurality of disk seats are installed at equal intervals in the circumferential direction of the valve disk and assembled to the other side of the valve disk and penetrate through the control screw hole, and the disk seat is fastened to the control screw hole. It includes; sealing control means having a control bolt for crimping to adjust the leakage blocking;
One side of the disk seat is tightly fixed to the disk seat mounting surface formed in the cross-section of the "L" shape having a predetermined depth on the outer peripheral surface of the valve disk, the other side is covered by the cover surface of the seat gland Fixed,
The "L" shape of the disk seat installation surface is a form in which two straight lines, a long axis line and a short axis line, are connected.
The cover surface of the seat gland is formed longer than the long axis of the "L" shape,
The lower surface of the cover surface tightly fixes the disk seat, and the upper surface of the cover surface is assembled to one side of the valve disk and the seat grant is fastened to the valve disk by means of fastening means of the penetrated grand bolt. Become fixed,
The control bolt is a butterfly valve having a sealing control function, characterized in that the elastic member is installed at the end in contact with the disk seat. The method according to claim 1,
Butter having a sealing control function characterized in that the head portion of the control bolt is formed in an extended structure, the head portion of the bolt forming a tool engaging groove, such as '+' or '-' shape or configured in a hexagonal shape Fly valve. The method according to claim 1,
The butterfly valve having a sealing control function, characterized in that the sealing control means is provided in eight places and has a structure capable of compressing the eight parts of the disk seat at 45 degree intervals.

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