KR200344243Y1 - Metal complex seat type butterfly valve - Google Patents

Abstract

The present invention relates to an improvement of a butterfly valve, and more particularly, a metal composite seat butterfly valve interposed on a water supply and sewage pipe to multiplex and control a seat of a butterfly valve that arbitrarily blocks / opens fluid communication. It is about.

The present invention is a conventional butterfly valve, the means for cutting a portion of the disk contact surface on the body side of the valve casing, installing the rubber sheet and the metal sheet sequentially in the incision portion, the means for pressing the metal sheet to the rubber seat side By providing. In addition, the present invention is characterized in that in addition to the above-described configuration, the O-ring is installed on both sides of the metal sheet, or the pressure chamber is provided on the other side with the O-ring on one side.

Therefore, the present invention increases the sealing force and durability at the same time to maintain the sealing force even after long-term use, and can be easily adjusted even in the case of damage / abrasion that may occur during use to restore the sealing force and economically produced metal composite sheet butter Providing a fly valve is a useful and effective design.

Description

Metal complex seat butterfly valve {Metal complex seat type butterfly valve}

The present invention relates to an improvement of a butterfly valve, and more specifically, a metal composite seat butterfly valve interposed on a water supply and sewage pipe to multiplex and control a seat of a butterfly valve that arbitrarily blocks / opens fluid communication. It is about.

In general, the valve is a valve case interposed in the pipe of a predetermined diameter through the disk is formed through the flow path through the disk through the shaft connected to the external handle by rotating the disk, the inner flow path is opened and closed, The valve seat is interposed between the inner body of the valve case and the disk to maintain a tight seal.

Therefore, the sealing force and durability of the valve depend on how the valve seat is installed and how it is installed. The most common structure is a structure in which a rubber-like ring is interposed, and the rubber is easy to form, deform and restore. The rubber ring has a problem that it is uneconomical because the rubber ring has a limit on durability because it is easily worn and damaged due to the shape of the space formed by the body and the disk. .

Attempts have been made to improve this, and as an example, the design of a double sealing structure for a butterfly valve (hereinafter referred to as 'priority 1 draft'), a utility model registration No. 20-0295954, is illustrated in FIG. 5. "Butterfly valve for opening and closing the fluid inside while the disk (8) assembled on both rotation shafts in the valve body 21 is rotated by the drive device; seating fixing means inside the valve body (21) By the seat rings 31 on both sides thereof.

Another example is the design of the 'butterfly valve' utility model registration No. 20-0326530 (hereinafter referred to as 'two conventional draft') is shown in Figure 6, "at least the openings are connected to the pipe at both sides and the inner peripheral surface A valve body 21 having a valve body seat 61 protruding in an annular shape along the circumferential direction thereof, and rotatably mounted in the valve body 21 so as to open and close both sides of the valve body 21. In the butterfly valve comprising a valve disk (8) to be coupled to the outer periphery of the valve disk (8) and sealing members (31, 32) in close contact with the valve body seat (61) when the valve is blocked, The outer peripheral portion of the valve disc 8 is formed with a sealing member mounting groove 23 in the circumferential direction, and the sealing members 31 and 32 are first sealing members made of an elastic material which is in close contact with the sealing member mounting groove 23. And the valve disc 8 to be in contact with the first sealing member 31. Including a second sealing member 32 mounted via a sealing fixing bolt 62, when the sealing fixing bolt 62 is rotated, the first sealing member 31 compressed by the second sealing member 32 The outer periphery is to be defined radially outward "

As another example, the design of the 'double sealing metal sheet for a butterfly valve' (hereinafter referred to as '3 conventional design'), which is a utility model registration No. 20-0254812, is shown in FIG. The butterfly valve is mounted on the rotating shaft of the disk 8 is rotated by the drive device (H), the disk seat 31 is mounted along the outer periphery of the disk and in close contact with the body seat 71 inside the body. In this case, the auxiliary sheet 32 is assembled to the rear side of the disk 8 and the contact sheet 72 having an elastic force is formed on the outer circumference thereof.

By the way, the prior art 1 plan was to improve the sealing force and durability than the conventional designs having only one valve seat by installing a double valve seat called seat ring 31 for sealing, it is simply Of course, it is only an effect obtained by pluralizing, and the problem that the sealing force is lowered due to deformation, which is a major problem in the conventional design, or the durability of rubber wear and tear is still remaining,

The prior arts 2 and 3 have been able to solve the above-mentioned problems of sealing force and durability by combining a rubber sheet and a metal sheet.

However, even if two sheets of dissimilar materials are installed, they may be separated by damage / wear after a predetermined period of time. In particular, in the prior art 3, the rubber and metal sheets are spaced apart so that the two sheets separately function. There is a problem that it is difficult to expect other than the effect of planning the sealing of the bun.

The present invention was devised to solve the above-mentioned problems, and the present invention was completed to provide a structure that increases the sealing force and durability at the same time to maintain the sealing force even after long-term use, and in particular, damage / wear that may occur during use It is to provide a metal composite seat butterfly valve that can be economically manufactured by providing a structure that can be easily adjusted to restore the sealing force at the time.

In order to achieve the above object, the present invention is a conventional butterfly valve, in which a portion of the disk contact surface of the body side of the valve case is cut off to install a rubber sheet and a metal sheet in the incision sequentially, and the metal sheet This is achieved by providing a means for pressing the rubber sheet side.

In addition, the present invention, in addition to the above-described configuration, by providing an O-ring on both sides of the metal sheet, or by providing a pressure chamber on the other side with the O-ring on one side can achieve the purpose more faithfully.

1 is an installation state of the present invention,

2 is a longitudinal cross-sectional view of FIG.

3 is a cross-sectional view of FIG.

4 is an enlarged state diagram of a main part of the present invention;

5 is a cross-sectional view of the main portion of the conventional design,

6 is a front view and a cross-sectional view of another conventional design,

Figure 7 is a cross-sectional view of the main portion of another conventional design.

<Description of the reference numerals for the main parts of the drawings>

1. Pipe

11.Flange 12. Tightening Bolt

2. Valve case

21. Body 22. Contact surface 23. Incision

3. Sealing means

31. Rubber Sheet 32. Metal Sheet

321.Acrylic 322.O-Ring 323.Wings

4. Pressing means

41. Adjusting ring 42. Adjusting screw 43. Stop ring

61. Body seat 62. Sealing bolt

71.Bodysheet 72.Contact Plate

8. Disc 9. Shaft H. Handle

Hereinafter, with reference to the accompanying drawings will be described in more detail the configuration and operation of the present invention.

1 is a state diagram of the present invention is installed between the pipe (1) and the pipe (1), Figure 2 is a cross-sectional view cut into the longitudinal section so as to know the main part of the present invention, Figure 3 is a cross-sectional view cut horizontally. 4 is an enlarged state diagram illustrating only one main part of the present invention.

As shown in the drawing, the metal composite seat butterfly valve according to the present invention has an internal flow path while the disk 8 embedded in the valve case 2 is rotated by the shaft 9 driven by the handle H. In the butterfly valve interposed between the pipe (1) and the pipe (1) by opening and closing the part of the valve case (2), a portion of the disk 8, the contact surface 22 of the body 21 side is cut off A cutout 23 is provided, and the cutout 23 is provided with a sealing means 3 for sequentially installing the rubber sheet 31 and the metal sheet 32, and is provided on the side of the metal sheet 31. It is made by installing the pressing means 4 which becomes the adjustment ring 41 which the several adjustment screw 42 which the attachment contacts is screwed.

Another configuration of the present invention, in the above-described configuration, characterized in that the O-ring 322 is installed on each side of the body 21 and the disk 8 of the metal sheet 32, respectively.

According to another aspect of the present invention, in the above-described configuration, an O-ring 322 is provided on the side in contact with the body 21 of the metal sheet 32, and a pressure chamber 321 is provided on the other side. desirable.

Referring to the function of each part of the present invention made as described above are as follows.

First, the present invention is applied to a conventional butterfly valve, and when describing the most common butterfly valve, for example, the butterfly valve is installed between the pipe (1, 1) is embedded in the valve case (2) The disk 8 rotates by the shaft 9 driven by the handle H to open and close the internal flow path. In the case of a small butterfly valve, the handle H-shaft 9-disk 8 is directly connected. The rotation angle of the handle H is transmitted to the disk 8 as it is, but in the case of a large butterfly valve, the disk 8 and the shaft 9 are large and heavy so that a means having a function such as a reduction gear is provided. Therefore, the disk (8) by the handle (H) is to block the passage inside the valve case (2) or open and open at a predetermined angle, the disk (8) when you want to block the water supply and drainage or oil, etc. Inside the valve case (2) It must be completely sealed, and therefore a seat for sealing is provided between the disk 8 and the body 21 of the valve case 2 by means of a sealing means 3, the seat being the disk 8 side or the body. It may be provided on the (21) side or both, and the ultimate purpose of any configuration is to completely close the passage inside the valve case 2 as described above.

By the way, the present invention cuts a part of the disk 8, the contact surface 22 of the body 21 side of the valve case 2 with the sealing means 3 to provide a cutout 23, the cutout The 23 is achieved by sequentially installing the rubber sheet 31 and the metal sheet 32. The disk 21 is a driven part, so that the weak sheet has a high risk of damage. The incision 23 is provided in the disk 8 contact surface 22 on the side, and the rubber sheet 31 and the metal sheet 32 are sequentially installed. Thus, the rubber sheet 31 and the metal sheet are installed. When the 32 is installed, the complete sealing force and durability can be obtained at the same time, and in particular, the rubber sheet 31 is formed on the stepped portion of the cutout 23 and the metal sheet 32 is exposed to the outside by limiting the installation order. ), Which protects the ductile rubber sheet 31 with high durability. It is an attempt to obtain a sealing force, in particular in consideration of the pressing means (4) to be described later is a consideration that can be adjusted even if the rubber sheet 31 is worn by long-term use.

That is, the pressing means 4 is to be an adjustment ring 41 which is combined with a plurality of adjustment screws 42 which are attached to the side of the metal sheet 31, the adjustment ring 41 is a valve case (2) If the inner passage of the valve case (2) is a circular shape is fixed to the body 21 of the valve case (2) is fixed by the same means as the stop ring 43, a number of The adjusting screw 42 pushes the metal sheet 32 toward the rubber sheet 31 so that the rubber sheet 31 can be supplemented even if the rubber sheet 31 is worn out as described above.

According to another configuration of the present invention, in addition to the above-described configuration, the O-rings 322 are installed on both sides of the metal sheet 32 and the body 21 and the disk 8, respectively, the metal sheet 32 ) Is mounted to the cutout 23 and the cutout 23 and the disc 8 of the body 21 are all made of metal, so no matter how precisely processed, gaps may occur, which is a contrast for sealing them. One or both of (21) or disk 8 may be made of rubber, or if there is a separate contrast for sealing, the O-ring 322 provided at the contact with the part may be omitted. Of course.

According to another configuration of the present invention, in addition to the configuration described above, the O-ring 322 is installed on the side in contact with the body 21 of the metal sheet 32, the other side to provide a pressure chamber 321, rubber The fluid leaking from the seat 31 or the fluid flowing before closing of the disk 8 may be pushed toward the disk 8 by pushing the wing 323 of the metal sheet 32 toward the disk 8 in the pressure chamber 321, which is an empty space. In particular, in a pipeline through which a high pressure fluid flows, it becomes useful.

This design raises the sealing force and durability at the same time to maintain the sealing force even after long-term use, and can be easily adjusted even in the case of damage / wear that can be caused during use to restore the sealing force and economically manufactured metal composite seat butterfly valve It is a useful and effective design to provide.

Claims (3)

A butterfly interposed between the pipe 1 and the pipe 1 by opening and closing an internal flow path while rotating the disk 8 embedded in the valve case 2 by the shaft 9 driven by the handle H. In the valve, A part of the disk 8 contact surface 22 on the body 21 side of the valve case 2 is cut off to provide an incision 23. The cutout 23 is provided with a sealing means (3) for sequentially installing the rubber sheet 31 and the metal sheet 32, A metal composite seat butterfly valve comprising a pressing means (4) formed of an adjusting ring (41) in which a plurality of adjusting screws (42) are attached to a side of the metal sheet (31). The method of claim 1, The metal composite seat butterfly valve, characterized in that the O-ring 322 is installed on both sides of the metal sheet 32 and the body (21) and the disk (8) in contact with each other. The method of claim 1, O-ring 322 is installed on the side in contact with the body 21 of the metal sheet 32, the other side is provided with a pressure chamber 321, the metal composite seat butterfly valve.