WO2013027897A1

WO2013027897A1 - Pressure-type butterfly valve

Info

Publication number: WO2013027897A1
Application number: PCT/KR2011/009161
Authority: WO
Inventors: 정태희; 송근원; 지연화
Original assignee: (주)삼진정밀
Priority date: 2011-08-23
Filing date: 2011-11-29
Publication date: 2013-02-28
Also published as: KR101108649B1

Abstract

The present invention relates to a pressure-type butterfly valve, and more particularly, to a pressure-type butterfly valve in which the opening and closing of a disk is linearly-rotatably driven, such that a sheet is not interfered with and the pressing and rotating of a conventional art sheet can be prevented so as to impart improved durability and sealability to the sheet, and the opening and closing of the disk at a high pressure of 150 bar or greater can easily be used so that the efficiency of the valve can be improved without any limitations on the use thereof.

Description

Pressurized Butterfly Valve

The present invention relates to a pressurized butterfly valve, and more particularly, the opening and closing of the disk is formed to be linear-rotational drive, thereby preventing the seat from interfering with the conventional seat being pressed and rotating, thereby improving durability and sealing property of the seat. The present invention relates to a pressurized butterfly valve which increases the efficiency of the valve because the disk can be easily opened and closed at a high pressure of 150 bar or more.

In general, the butterfly valve is installed in the inside of the valve body connected to the pipeline so that the disk can be rotated by the rotation shaft, and rotates by the drive device connected to the rotation shaft to open and close the pipeline. The inner circumferential surface of the valve body and the outer circumferential surface of the disk are provided with a seat or a sealing device which is pressed against each other when closed.

Here, the butterfly valve is a device for intermittent fluid by rotating the disk 90 degrees by the axis, the butterfly valve is capable of valve operation when either the seat of the body seat and the disk seat has sufficient elasticity.

Therefore, one of the sheets of the body or disk is used elastic materials such as rubber, urethane, silicone, nylon, Teflon. However, these elastic materials are easily worn or have a disadvantage of high temperature or cryogenic temperature, a chemical-containing fluid or foreign matter in the fluid.

Then, when the disc is opened, it is opened while pressing the sheet, so that the durability of the sheet is lowered as it is continuously closed-opened, thereby causing a problem that the sealing force falls when the disc is closed.

Accordingly, the present invention has been made to solve the above conventional problems,

The opening and closing of the disk is formed to be linearly-rotated, so that the sheet is not interfered and the conventional sheet is prevented from being pressed and rotated, thereby improving durability and sealing of the sheet, and easily opening and closing the disk at a high pressure of 150 bar or more. It is an object of the present invention to provide a pressurized butterfly valve which is not limited to the valve and thus increases the efficiency of the valve.

In order to achieve the above object, the present invention is a through-hole is formed horizontally so that the fluid is transported between the pipe and the tube, the step is formed so that the disk for opening and closing the flow of the fluid on the inner periphery of the through hole is supported, A body having communication holes respectively formed in upper and lower portions in a vertical direction with the through hole;

It is provided in the through hole of the body to open and close the flow of the fluid transported in the horizontal rotation, the seat is further installed so that one end surface in close contact with the step of the body, the rear side is formed to be inclined from the step by the pressure of the fluid A disk spaced apart from each other and having a connection groove formed on the inclined rear surface;

It is connected to the connecting groove of the disk is driven up and down by the stem, one end surface is connected to the connecting groove of the disk is formed to be inclined when driving upward, when the disk is spaced backwards, when driving downward, A connector for crimping the disk on the step;

A stem which vertically penetrates the connector and is supported by upper and lower portions in a communication hole of the body and horizontally rotates the disk while driving the connector up and down;

An outer shaft connected to an upper portion of the stem by a pin to drive the stem vertically and horizontally;

An inner shaft, one end of which is screwed into the outer shaft and rotated to drive the outer shaft up and down and horizontally;

A housing provided at an outer circumference of the outer shaft and the inner shaft, the lower side of which is fixed to an upper surface of the upper communication hole side of the body;

It is fixed to the upper portion of the housing, connected to the upper side of the inner shaft and the gearbox for rotating the inner shaft by the operation of the handle; relates to a pressurized butterfly valve comprising a.

As described above, the pressurized butterfly valve of the present invention is formed so that the opening and closing of the disk is a linear-rotation drive, the seat is not interfered and the conventional seat is prevented from being rotated, thereby improving durability and sealing of the seat. Since the disk can be easily opened and closed at high pressure of more than 150bar, the efficiency of the valve is increased because it is not restricted in use.

1 is a front view showing a butterfly valve according to an embodiment of the present invention,

2 is a cross-sectional view showing part A-A of FIG. 1,

3 is a cross-sectional view showing a portion B-B of FIG.

4 to 6 is a side cross-sectional view showing the operation of the butterfly valve according to an embodiment of the present invention.

10 body 11 through hole

12: step 13: communication hole

14,71: flange 15: stem cover

20: disc 21: sheet

22: connecting groove 30: connector

31: connecting projection 32: fixing hole

40 stem 50 outer shaft

51: pin 52: crimp ball

60: inner shaft 61: stopper

70 housing 72 housing cover

80: gearbox 81: handle

100: Pressurized Butterfly Valve

The present invention has the following features to achieve the above object.

According to the present invention, a through hole is horizontally connected between the pipe and the pipe so that fluid is transferred, and a step is formed to support a disk for opening and closing the flow of the fluid at an inner circumference of the through hole, and a vertical step is formed in the vertical direction with the through hole. A body having communication holes formed in upper and lower portions, respectively;

It is fixed to the upper portion of the housing, connected to the upper side of the inner shaft gearbox for rotating the inner shaft by the operation of the handle; characterized in that it comprises a.

The present invention having such a feature will be more clearly described through the preferred embodiment accordingly.

Before describing the various embodiments of the present invention in detail with reference to the accompanying drawings, it can be seen that the application is not limited to the details of the configuration and arrangement of the components described in the following detailed description or shown in the drawings. will be. The invention can be implemented and carried out in other embodiments and can be carried out in various ways. In addition, device or element orientation (e.g., "front", "back", "up", "down", "top", "bottom" The expressions and predicates used herein with respect to terms such as "," "left", "right", "lateral", etc. are used merely to simplify the description of the present invention, and related apparatus. Or it will be appreciated that the element does not simply indicate or mean that it should have a particular direction. Moreover, terms such as "first" and "second" are used in the specification and the appended claims for purposes of illustration and are not intended to indicate or mean the relative importance or spirit.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a front view showing a butterfly valve according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a portion AA of Figure 1, Figure 3 is a cross-sectional view showing a portion BB of Figure 1, Figures 4 to 6 Is a side cross-sectional view showing the operation of the butterfly valve according to an embodiment of the present invention.

As shown in Figs. 1 to 6, the pressurized butterfly valve 100 of the present invention includes a body 10, a disk 20, a connector 30, a stem 40, and an outer shaft 50. ), An inner shaft 60, a housing 70, and a gearbox 80.

As shown in FIGS. 1 to 3, the body 10 has a through hole 11 horizontally formed at a central portion such that pipes (not shown) for transferring fluid to both sides are connected to each other so that the fluid is transferred through the inside. At the inner circumference of the through hole 11, a step 12 is formed to support a disk for opening and closing a fluid flow. At this time, the flanges 14 are formed on both sides of the body 10 to be connected to the pipe.

Here, the upper and lower communication holes 13 are formed in the upper and lower portions of the body 10 so as to communicate in the vertical direction with the through-hole 11 formed horizontally in the central portion of the body 10, The stem cover 15 is formed at the lower end of the communication hole 13 to be connected with a bolt and a nut, and the flange 14 is connected to the housing 70 at the upper end of the communication hole 13. Is formed.

In addition, the upper and lower communication holes 13 are respectively provided with bearings (not shown) so as not to be damaged by friction with the upper and lower stems 40 respectively inserted.

2 to 6, the disk 20 is formed of a circular plate is provided in the through hole 11 of the body 10 is rotated horizontally and the fluid of the transfer through the through hole 11 Open and close the flow, the disk 20 is in close contact with the step 12 of the body 10, one end surface of the disk 20 in contact with the step 12 is in close contact with the step 12 (12) The seat 21 is further installed so that it may be. At this time, the sheet 21 is formed of an elastic material.

Here, the rear surface of the disk 20 is formed to be inclined, spaced apart from the step 12 by the connector 30, as shown in FIG. 2, the connection groove 22 is formed so that the connector 30 is connected to the inclined rear surface The connecting groove 22 is formed to penetrate in the vertical direction of the disk 20. In this case, the phenomenon in which the disk 20 is spaced apart from the step 12 is described in detail in the disk opening and closing method to be described below.

As shown in FIGS. 2 and 3, the connector 30 is inserted into the connecting groove 22 of the disk 20 and driven up and down by the stem 40 to be horizontally identical to the stem 40. Rotating (rotating) to rotate the disk 20 horizontally, one end surface is connected to the connecting groove 22 of the disk 20 is formed to be inclined, as shown in Figs. 4 to 6, when driven upward, the disk 20 ) Is spaced apart rearward, and when driven downward, the disk 20 is pressed against the step 12. At this time, the drive of the disk 20 according to the operation of the connector 30 will be described in detail in the disk opening and closing method to be described below.

Here, as shown in FIG. 3, the connector 30 has a connecting protrusion 31 formed at one end thereof so as to be connected to the connecting groove 22 of the disk 20, and the connecting protrusion 31 has a disk ( It is formed to be inclined in accordance with the connecting groove 22 of the 20, the fixing hole 32 is formed vertically so that the stem 40 is vertically penetrated and fixed.

In addition, after the stem 40 is connected to the fixing hole 32 of the connector 30 and connected thereto, as shown in FIG. 3, a fixing member (not shown) such as a pin or a bolt is connected to the outer surface of the connector 30 and the stem ( It is inserted through 40 to fix the stem 40 integrally with the connector 30.

2 and 4 to 6, the stem 40 is vertically connected to the fixing hole of the connector 30, the upper and lower portions of the stem 40 of the body 10 Supported by the communication hole 13, the stem 40 rotates the disk 20 while driving the connector 30 up and down.

As shown in FIGS. 1 and 2, the housing 70 has a stem 40 protruding through the upper communication hole 13 of the body 10, an outer shaft 50 and an inner shaft 60 to be described later. While being provided at the outer periphery of the lower side is fixedly installed in the flange 71 formed on the upper surface of the upper communication hole 13 side of the body 10, the upper side of the housing cover 72 is connected to the gear box 80 Is installed more.

In addition, the housing 70 serves to protect the stem 40, the outer shaft 50, and the inner shaft 60 in a situation generated by an external shock or the like.

In addition, a ball guide groove (not shown) is formed on the inner circumference of the housing 70 so that the compressed ball 52 of the outer shaft 50 to be described later is inserted only up and down, and the ball guide groove is fixed. Only a gap is formed, in which case, when the pressing ball 52 reaches the stopper 61 of the inner shaft 60 to be described later, the pressing ball 52 reaches the stopper 61 so as to rotate along the inner shaft 60. Only until the ball guide groove is formed.

2 and 4 to 6, the outer shaft 50 is provided in the interior of the housing 70 is connected to the upper portion of the stem 40 and the pin 51, the stem 40 The upper side of is inserted into the lower end of the outer shaft 50 is fixedly connected to the pin 51, and the stem 40 is fixed so that the up and down drive and horizontal rotation.

Here, the one end of the outer shaft 50 is coupled to the pressing ball 52 to compress the outer shaft 50 on the inner circumference of the housing 70, thereby as shown in Figures 5 and 6, the inner shaft ( The outer shaft 50 is driven up and down along the inner shaft 60 by the rotation of the 60. At this time, by pressing the inside of the housing 70 by the pressing ball 52, the outer shaft 50 is not rotated in accordance with the rotation of the inner shaft 60, up and down along the inner shaft 60 Driven vertically.

As shown in FIGS. 2 and 4 to 6, the inner shaft 60 is screwed into one end of the outer shaft 50 so that the outer shaft 50 is driven up and down and horizontally rotated. Is rotated.

Here, the upper side of the inner shaft 60 is provided inside the gear box 80, the gear (not shown) is connected to the end portion so that the rotational force of the handle 81 of the gear box 80 is transmitted to the outer shaft 50 is to pass.

In addition, a stopper 61 is further installed at an outer end of the inner shaft 60 to restrain the outer shaft 50 driven upward by the inner shaft 60, as shown in FIG. 2, ie, the stopper. The outer shaft 50 is no longer driven upward as the outer shaft 50 comes into contact with the 61, and the outer shaft 50 restrained by the stopper 61 continues the rotation of the inner shaft 60. Rotate the same as to open the disk 20.

1 and 2, the gear box 80 is fixed to the housing cover 72 formed on the upper portion of the housing 70, the rotational force generated in connection with the upper side of the inner shaft 60 In this case, at one end of the gear box 80, a handle 81 to generate a rotational force is formed through the horizontal, the end of the handle 81 is formed a gear (not shown) the inner shaft The rotational force generated through the handle 81 in engagement with the upper gear of 60 is transmitted.

Hereinafter, an operation method of the subscription butterfly valve described above, that is, a method of opening and closing a disk will be described with reference to the drawings.

4 to 6, when the operation method (including the opening and closing method of the disk 20) of the subsidiary butterfly valve 100 will be described, first, Figure 4 is usually the disk 20 is sealed Since the outer shaft 50 and the connector 30 are driven to the lowest side, the disk 20 is pressed against the step 12 of the body 10 by the connector 30, and thus the high pressure fluid There is no gap between the disk 20 and the step 12.

5 shows the state in which the outer shaft 50 and the connector 30 are driven upward to operate the handle 81 to open the disk 20 so that the disk 20 is linearly moved backward. When the 81 is rotated in one direction, the rotational force is transmitted to the inner shaft 60, and the rotational force is transmitted to the outer shaft 50 connected to the inner shaft 60. In this case, a screwed outer shaft ( 50 is also rotated in the same manner as the inner shaft 60, but in the present invention, the pressing ball 52 of the outer shaft 50 is inserted into the ball guide groove (not shown) of the housing 70, the outer shaft 50 Is interfered with, so that the outer shaft 50 is driven up and down along the inner shaft 60 without being rotated.

As such, the outer shaft 50 driven upward drives the connected stem 40 in the same manner while driving the connector 30 upwards a predetermined distance, while the connector 30 and the disk 20 are inclined. As the connector 30 is driven upward to generate a space in which the disk 20 can linearly move backward, the disk 20 is driven backward by the pressure of the fluid, so that the step 12 and It is spaced a predetermined interval.

Then, Figure 6 is to open the disk 20 completely in the state as shown in Figure 5, when the handle 81 is rotated continuously the outer shaft 50 reaches the stopper 61 of the inner shaft 60 The compression ball 52 of the outer shaft 50 is separated from the ball guide groove of the housing 70 so that it no longer interferes with the rotation of the outer shaft 50, and thus, the outer shaft 50. Is rotated in the same manner as the inner shaft 60.

Then, the stem 40 connected to the outer shaft 50 also rotates, the connector 30 connected to the stem 40 also rotates, and the disk 20 connected to the connector 30 also rotates. Thus, when the disk 20 is completely open and, on the contrary, the disk 20 is sealed, the above process is reversed.

Claims

A through hole 11 is formed horizontally to be connected between the pipe and the pipe so that fluid is transferred, and the stepped portion 12 is supported to support the disk 20 that opens and closes the flow of fluid on the inner circumference of the through hole 11. A body 10 having upper and lower communication holes 13 respectively formed in a vertical direction with the through hole 11;

The seat 21 is provided in the through hole 11 of the body 10 to open and close the flow of the fluid transported in a horizontal rotation, and one end surface is in close contact with the step 12 of the body 10. It is installed, the rear surface is formed to be inclined spaced apart from the step (12) by the pressure of the fluid, the disk 20 is formed in the inclined rear connection groove 22;

When connected to the connecting groove 22 of the disk 20 is driven up and down by the stem 40, the one end surface is connected to the connecting groove 22 of the disk 20 is formed to be inclined to drive upwards A connector 30 which spaces the disk 20 rearward and compresses the disk 20 to the step 12 when driven downward;

A stem which vertically penetrates the connector 30 and is supported by upper and lower portions in the communication hole 13 of the body 10 and horizontally rotates the disk 20 while driving the connector 30 up and down. 40;

An outer shaft 50 connected to an upper portion of the stem 40 and a pin 51 to drive the stem 40 up and down and rotate horizontally;

An inner shaft 60 having one end screwed into the outer shaft 50 and rotated to drive the outer shaft 50 up and down and horizontally;

A housing (70) provided at the outer periphery of the outer shaft (50) and the inner shaft (60), the lower side of which is fixed to an upper surface of the upper communication hole (13) side of the body (10);

A gear box (80) fixedly installed at an upper portion of the housing (70) and connected to an upper side of the inner shaft (60) to rotate the inner shaft (60) by the operation of the handle (81);

Pressurized butterfly valve, characterized in that comprising a.
The method of claim 1,

One end of the outer shaft 50 is coupled to the pressing ball 52 to compress the outer shaft 50 on the inner circumference of the housing 70, the outer shaft 50 by the rotation of the inner shaft 60 Pressurized butterfly valve, characterized in that driven up and down.
The method of claim 2,

A stopper 61 is further installed at one end of the inner shaft 60 to restrain the outer shaft 50 driven upward, and the outer shaft 50 restrained by the stopper 61 is an inner shaft that continues. Pressurized butterfly valve, characterized in that the same rotation in accordance with the rotation of the 60 to transmit the rotational force to the stem (40).
The method of claim 1,

The connector 30 has a connecting protrusion 31 formed at one end thereof to be connected to the connecting groove 22 of the disk 20, and the connecting protrusion 31 is aligned with the connecting groove 22 of the disk 20. It is formed to be inclined, the pressure butterfly valve, characterized in that the fixing hole 32 is formed vertically so that the stem 40 is vertically penetrated and fixed.