KR102497533B1 - Fold Type Disk Butterfly Valve - Google Patents

Abstract

The present invention has been made to solve the above problems, so that the rotational shaft is not directly exposed to the pressure of the fluid so that the rotational operation is smooth, and the first and second disks are fastened to one rotational shaft, but one is fixedly coupled , the other is combined in a rotatable state to simplify the configuration through structural improvement so that each disk rotates in a folder type when the rotating shaft is rotated, while fundamentally blocking the slip phenomenon during opening and closing operations to prevent abrasion of the seat, sludge and An object of the present invention is to provide a butterfly valve having a foldable disc that prevents foreign matter from being caught or a disc seat and a body sheet from being jammed, and furthermore, there is no risk of leakage even during reverse flow.
According to the present invention, the rotational operation is smooth by preventing the rotational shaft from being directly exposed to the pressure of the fluid due to the pillar formed at the inlet, and two disks are fastened to one rotational shaft, but one is fixedly coupled and the other is rotatably coupled When the rotating shaft is rotated, the configuration is simplified through structural improvement that opens and closes the fluid passage while rotating simultaneously in a folder type, while fundamentally blocking the slip phenomenon during opening and closing operations to prevent sheet abrasion, entrapment of sludge and foreign substances, or disc sheet In addition to preventing the body sheet from being jammed, the disc is more closely adhered during reverse flow, so that there is no concern about leakage.

Description

Butterfly valve having a folding disk {Fold Type Disk Butterfly Valve}

The present invention relates to a butterfly valve having a foldable disk, and more particularly, so that the rotating shaft is not directly exposed to the pressure of a fluid so that the rotating operation is smooth, and a disk is fastened to one rotating shaft to rotate in a folding type A folder that simplifies the configuration through structural improvements to prevent slippage during opening and closing operations to prevent sheet abrasion, sludge and foreign matter from being caught, or disc and body sheets to be prevented from leaking even during reverse flow. It relates to a butterfly valve having a shaped disk.

In general, a butterfly valve is a valve installed at a connection part of a fluid passage for supplying various types of water, including drinking water, industrial water, agricultural water, and firefighting water, or chemicals such as chemicals and chemicals. It is a valve used to open and close the fluid passage in a rotating way to control the flow rate or flow rate.

This butterfly valve has been published as Korean Utility Model Publication No. 1995-0033728 (published on December 18, 1995). In this butterfly valve, the disk is rotated by the rotational action of rotating the rotating shaft to regulate the flow of fluid. If the disk is forcibly rotated to open the valve in a state where the disk and the body seat are in tight contact with each other, considerable power is generated. This is required, and it causes wear of the sheet due to great friction, making it difficult to use for a long time or requiring high maintenance costs. Due to the expansion or contraction of the sheet to be rotated, the operation itself was difficult and inconvenient.

The present invention has been made to solve the above problems, so that the rotational shaft is not directly exposed to the pressure of the fluid so that the rotational operation is smooth, and the first and second disks are fastened to one rotational shaft, but one is fixedly coupled , the other is combined in a rotatable state to simplify the configuration through structural improvement so that each disk rotates in a folder type when the rotating shaft is rotated, while fundamentally blocking the slip phenomenon during opening and closing operations to prevent abrasion of the seat, sludge and An object of the present invention is to provide a butterfly valve having a foldable disc that prevents foreign matter from being caught or a disc seat and a body sheet from being jammed, and furthermore, there is no risk of leakage even during reverse flow.

In order to achieve the above object, the present invention provides a penetrating fluid passage having an inlet through which fluid is introduced and an outlet through which the fluid is discharged, a body sheet is formed along the shape of the inner wall of the fluid passage, and the body sheet is formed. A body in which a pillar is connected vertically to divide the inlet of the fluid passage into first and second inlets, and upper and lower coupling portions having shaft holes communicating with the inside are formed on the upper and lower sides; A rotating shaft installed in a rotatable state while being inserted into the body through the upper coupling portion and seated in the lower coupling portion; and a first disk and a second disk coupled to the rotating shaft inside the fluid passage to open and close the first and second inlets, respectively. The first disk is coupled to the rotating shaft through a bracket and fixedly coupled through a fixing pin. The second disk is rotatably coupled to the rotating shaft through a bracket, the first disk fixed to the rotating shaft rotates in the same direction as the rotating shaft, and the second disk mediates the power transmission member. It is configured to rotate in the opposite direction to the rotation axis, and the first disk and the second disk provided on one rotation axis are configured to open and close the first and second entrances at the same time; characterized in that it is configured to include.

Preferably, the column is characterized in that it is formed pointed toward the inlet to receive less pressure of the inlet fluid.

Preferably, the power transmission member is fixedly coupled to the rotating shaft and has a fixed body having a half-moon-shaped pinion gear; and a rack gear provided on the second disk and installed to be engaged with the pinion gear unit, so that when the rotating shaft is rotated, the rack gear engaged with the pinion gear unit of the fixed body causes the second disk to It is characterized in that the rotational operation is performed in the opposite direction to the rotational axis.

Preferably, each sheet is provided at the edge of the first and second disks to be in close contact with the body sheet and the pillar to improve watertightness.

According to the present invention, the rotational operation is smooth by preventing the rotational shaft from being directly exposed to the pressure of the fluid due to the pillar formed at the inlet, and two disks are fastened to one rotational shaft, but one is fixedly coupled and the other is rotatably coupled When the rotating shaft is rotated, the configuration is simplified through structural improvement that opens and closes the fluid passage while rotating simultaneously in a folder type, while fundamentally blocking the slip phenomenon during opening and closing operations to prevent sheet abrasion, entrapment of sludge and foreign substances, or disc sheet In addition to preventing the body sheet from being jammed, the disc is more closely adhered during reverse flow, so that there is no concern about leakage.

1 is a perspective view showing a butterfly valve having a foldable disk according to a preferred embodiment of the present invention.
"A" in Figure 2 is a longitudinal cross-sectional view showing a body according to a preferred embodiment of the present invention, "B" is a cross-sectional view.
"A" in FIG. 3 is a perspective view showing a disk according to a preferred embodiment of the present invention, and "B" is a cross-sectional view.
Figure 4 is a perspective view showing a coupling relationship between a disk and a rotation shaft according to a preferred embodiment of the present invention.
"A" and "B" in FIG. 5 are cross-sectional views showing the rotational operation relationship of the disk.
"A" in FIG. 6 is a schematic cross-sectional view showing a closed state of the butterfly valve according to a preferred embodiment of the present invention, and "B" is a schematic cross-sectional view showing an open state.

Hereinafter, a butterfly valve having a foldable disk according to the present invention will be described in more detail with reference to the accompanying drawings.

Prior to this, the terms or words used in this specification and claims should not be construed as being limited to the usual or dictionary meaning, and the inventor appropriately uses the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, so at the time of the present application, they can be replaced. It should be understood that there may be many equivalents and variations.

1 is a perspective view showing a butterfly valve having a foldable disk according to a preferred embodiment of the present invention, "A" in FIG. 2 is a longitudinal sectional view showing a body according to a preferred embodiment of the present invention, "B" "A" in Figure 3 is a perspective view showing a disk according to a preferred embodiment of the present invention, "B" is a cross-sectional view, Figure 4 is a disk and a rotation shaft according to a preferred embodiment of the present invention It is a perspective view showing the coupling relationship, and "A" and "B" in FIG. 5 are cross-sectional views showing the rotational operation relationship of the disk.

Referring to FIG. 1, the butterfly valve of the present invention is largely composed of a body 100, a rotating shaft 200 and a disk 300.

First, the body 100 has a fluid passage 110 through which fluid flows, and as shown in FIG. 2, the fluid passage 110 includes an inlet 112 through which the fluid is introduced and an outlet through which the fluid is discharged. 114 is formed, and a body sheet 120 protrudes inward along the shape of the inner wall of the fluid passage 110, and the body sheet 120 is connected vertically to the entrance of the fluid passage 110. A pillar 130 dividing 112 into first and second inlets 112a and 112b is formed, and upper and lower coupling portions 140a and 140b having shaft holes 142 communicating with the inside are formed on the upper and lower sides. However, the lower coupling portion 140b is provided with a cover 144 for sealing the shaft hole 142, and although not shown in the coupling portion, it is natural to seal through the packing. In addition, flanges are formed on both edges of the body 100 so that they can be connected to the conduit, which is a well-known part and a separate description thereof will be omitted.

On the other hand, the column 130 may be simply formed in a rectangular type, but if the tip is formed to be pointed in the direction in which the fluid flows in, there will be an advantage in that it receives less pressure from the fluid.

Next, as shown in FIGS. 1 and 2 , the rotating shaft 200 is inserted into the body 100 through the upper coupling portion 140a and is placed in the lower coupling portion 140b to be mounted in a rotatable state. has been If, assuming that the inlet 112 through which the fluid is introduced is forward, as shown in "b" of FIG. 2, the rotating shaft 200 is located at the rear of the column 130, so that the fluid flows into the passage 110. Since it does not come into direct contact with the pressure of the fluid being used, it is natural that the rotational operation is convenient due to less pressure.

Finally, as shown in FIG. 1, the disk 300 is coupled to the rotating shaft 200 inside the fluid passage 110 and is provided to open and close the first and second inlets 112a and 112b, respectively. As shown in FIG. 3, it is composed of a first disk 310 and a second disk 320, and the first and second disks 310 and 320 have brackets 312 and 322 to be coupled to the rotation shaft 200. As shown in FIG. 4, the bracket 312 of the first disk 310 is fixedly coupled to the rotation shaft 200 through a fixing pin 314 and rotates in the same direction when the rotation shaft 200 rotates. On the other hand, the bracket 322 of the second disk 320 is fitted to the rotating shaft 200 but is not fixed, so that it does not rotate even when the rotating shaft 200 rotates.

On the other hand, the second disk 320 is connected through the power transmission member 330 is configured to rotate in the opposite direction to the rotational direction of the rotary shaft 200. As shown in FIG. 3, the power transmission member 330 is provided on the fixed body 332 and the second disk 320 on which the half-moon-shaped pinion gear 334 is formed, and is provided on the pinion gear 334. It is configured to include a rack gear 336 installed to engage. That is, as shown in FIG. 4, the fixture 332 is fitted onto the rotary shaft 200 and fixedly coupled via the fixing pin 314 to rotate in the same direction as the rotary shaft 200. At this time, the fixture 332 Due to the movement of the rack gear 336 meshed with the pinion gear part 334 of 332, the second disk 320 rotates in the opposite direction to the rotation shaft 200.

At this time, a seat 340 is provided at the edge of the first and second disks 310 and 320 to adhere closely to the body seat 120 and the pillar 130 forming the first entrance 112a and the second entrance 112b. It is desirable to improve watertightness. The sheet 340 may be formed of metal, a rubber material having certain elasticity, urethane, silicone, Teflon, or the like.

That is, when the disk 300 of the present invention configured as described above rotates the rotating shaft 200 clockwise, as shown in "A" and "B" of FIG. 5, it is fixedly coupled to the bracket 312 through The first disk 310 there will be rotated in the same direction, and at the same time, the second disk 320 rotatably coupled to the rotation shaft 200 via the bracket 322 is fixedly coupled to the rotation shaft 200. It can be seen that when the fixed body 332 is rotated, it is rotated in the opposite direction to the rotating shaft 200 due to the movement of the rack gear 336 engaged therewith.

In FIG. 6, "A" is a schematic cross-sectional view showing a closed state of the butterfly valve according to a preferred embodiment of the present invention, and "B" is a schematic cross-sectional view showing an open state.

First, referring to "A", the first and second disks 310 and 320 are in close contact with the fluid passage 110 of the body 100, the body seat 120 and the pillar 130 in a unfolded state, so that the first inlet 112a and the second inlet 112b is closed. In this state, when the rotating shaft 200 is rotated clockwise as in "I", the first disk 310 rotates clockwise in the same direction as the rotating shaft 200, and the second disk 320 is a power transmission member ( 330) while simultaneously rotating counterclockwise, the first inlet 112a and the second inlet 112b are simultaneously opened so that the fluid can flow toward the outlet 114. Also, when the rotating shaft 200 is rotated counterclockwise, the first and second disks 310 and 320 are rotated as in "A" so that the fluid passage 110 is closed.

On the other hand, as described above, the rotating shaft 200 is located on the left side of the column 130 in the drawing, so it is convenient to rotate the first and second disks 310 and 320 without directly receiving fluid pressure. In addition, since the pillar 130 is also formed sharp in the direction of the inlet 112, there will be an advantage in receiving less fluid pressure. At this time, the rotation of the rotary shaft 200 can be manually rotated by a worker, but it is obvious that it can also be configured to automatically rotate by connecting to a driving means not shown.

Above all, when the foldable disks 310 and 320 are mounted on one rotation shaft 200 and one rotation shaft 200 is rotated, the foldable disc 300 simultaneously rotates to open and close the fluid passage 110. Simplified products can be provided through structural improvements that allow

In addition, the disk 300 adheres to the body sheet 120 according to the direction of rotation of the rotating shaft 200 and then falls, so that the slip phenomenon of the seat 340 is prevented because it is not tightly fitted as in the prior art but adheres to the horizontal line It can significantly reduce abrasion, which has advantages in maintenance, prevents seat abrasion, prevents sludge and foreign substances from being caught, or between disk seat and body seat, as well as prevents leakage by making the disk 300 more closely adhered to when fluid flows backward. There are also effects that are not cause for concern.

The foregoing has outlined rather broadly the features and technical advantages of the present invention in order to better understand the claims of the invention which will be described later. Additional features and advantages that form the scope of the claims of the present invention will be detailed below. It should be appreciated by those skilled in the art that the conception and specific embodiments of the invention disclosed may readily be used as a basis for designing or modifying other structures for carrying out purposes similar to the invention.

In addition, the concepts and embodiments of the present invention disclosed in the present invention serve as a basis for modifying or designing other structures to achieve the same purpose of the present invention, and such modified or changed equivalent structures by those skilled in the art are patented. Various changes, substitutions and modifications are possible without departing from the spirit or scope of the invention described in the claims.

100: body 110: fluid passage
112: inlet 114: outlet
120: body seat 130: pillar
140a: upper coupling portion 140b: lower coupling portion
142: shaft hole 144: cover
200: axis of rotation 300: disk
310: first disk 312: bracket
314: fixing pin 320: second disk
322: bracket 330: power transmission member
332: fixture 334: pinion gear part
336: rack gear 340: sheet

Claims (4)

A penetrating fluid passage having an inlet through which fluid is introduced and an outlet through which fluid is discharged is formed, a body sheet is formed along the shape of an inner wall of the fluid passage, and the inlet of the fluid passage is formed by vertically connecting the body sheet. , A body in which a pillar bisected by two entrances is formed, and upper and lower sides are formed with upper and lower coupling parts having shaft holes communicating with the inside;
A rotating shaft installed in a rotatable state while being inserted into the body through the upper coupling portion and seated in the lower coupling portion; and
It is coupled to the rotating shaft inside the fluid passage and consists of a first disk and a second disk for opening and closing the first and second inlets, respectively. The first disk is coupled to the rotating shaft through a bracket and is fixedly coupled through a fixing pin. , The second disk is rotatably coupled to the rotating shaft through a bracket, the first disk fixed to the rotating shaft rotates in the same direction as the rotating shaft, and the second disk is driven through a power transmission member. a disk configured to be rotated in the opposite direction to the rotational axis so that the first and second disks provided on one rotational axis open and close the first and second entrances at the same time;
A butterfly valve having a folder type disk, characterized in that configured to include. According to claim 1,
The column is a butterfly valve having a foldable disk, characterized in that formed pointed toward the inlet to receive less pressure of the inlet fluid. According to claim 1,
The power transmission member is
a stationary body fixedly coupled to the rotating shaft and having a half-moon-shaped pinion gear; and
It is provided on the second disk and is configured to include a rack gear installed to be engaged with the pinion gear unit,
A butterfly valve having a folder-type disk, characterized in that when the rotation shaft rotates, the second disc rotates in the opposite direction to the rotation shaft due to the rack gear engaged with the pinion gear portion of the fixed body. According to claim 1,
A butterfly valve having a folder type disk, characterized in that each sheet is provided at the edge of the first and second disks to be in close contact with the body sheet and the column to improve watertightness.

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