KR100994901B1 - Double disk control valve - Google Patents

Abstract

The present invention can maintain the complete airtight at the level of the ball valve or the grove valve, and can replace the ball valve or the grove valve which is heavy and very expensive to manufacture, and can be applied even when the fluid flow is bidirectional. Rather, the present invention relates to a double disc control valve that can be installed without distinguishing between an inlet side and an outlet side.

The double disc control valve may include a valve body having a through hole formed at a central portion thereof to connect a pair of tubular bodies to the front and rear portions thereof; A shaft installed to rotatably penetrate from the upper end center portion of the valve body to the lower end center portion; A first disk formed in a disc shape having a diameter corresponding to the through hole of the valve body, and having a fastening hole formed with a fastening hole to be fitted to the shaft at a lower portion of a central portion of one side; A second disk which is formed in a disk shape having a diameter corresponding to the through hole of the valve body, and a fastener having a fastening hole formed on the shaft to overlap the fastener of the first disk is formed at an upper end of the central portion of one side; And an airtight means installed at one side outer end portion of the first and second disks to be in close contact with the inner circumferential surface of the valve body.

Control valves, discs, valve bodies, hermetic seals, through holes, laminar flow guide protrusions

Description

Double disk control valve

The present invention relates to a double disc control valve, and more particularly, it is possible to maintain the complete airtight at the level of the ball valve or the grove valve to replace the ball valve or the grove valve which is heavy and very expensive to manufacture, Not only can be applied when the fluid flow is bidirectional, but also relates to a double disc control valve that can be installed without the inlet and outlet side.

Hereinafter, a background art and a problem thereof will be described with reference to the accompanying drawings.

1 is a cross-sectional view showing a conventional general butterfly valve, Figure 2 is a cross-sectional view showing an operating state of a conventional general butterfly valve.

1 and 2, a conventional butterfly valve 1 includes a valve body in which a through hole (not shown) is formed at a center portion so as to connect a pair of tubular bodies at a front and a rear portion thereof, and It is formed in the form of a disc 11 having a diameter corresponding to the through-hole of the shaft 11 and the shaft 11 is installed to be rotatable through the upper end center portion of the valve body 10 from the lower end center portion, one side A disk 12 having a fastener 121 having a fastening hole 120 fitted to the shaft 11 protrudes from a lower end of the central portion thereof, and the disk 12 of the disk 12 to be in close contact with an inner circumferential surface of the valve body 10. It is configured to include an airtight means 14 is installed on one side outer end.

Conventional butterfly valve (1) configured as described above is rotated to one side of the operating lever (not shown) connected to the shaft 11 in a state in which the butterfly valve (1) is closed as shown in FIG. In this case, as shown in FIG. 2, the butterfly valve 1 is interlocked with the operation lever to rotate the shaft 11 and the disk 12 to one side to open the through-hole of the valve body 10. In order to close the open butterfly valve 1 again as shown in FIG. 2, the operating lever is rotated to the other side, and the shaft 11 and the disc 12 are linked to the other side. By rotating, the butterfly valve 1 can be closed again as shown in FIG. 1 by closing the through hole of the valve body 10 by the disk 12.

However, the conventional butterfly valve (1) as described above has the advantage that the manufacturing cost is low and the weight of the valve can be reduced, but the airtight cross-sectional area that structurally seals the through-hole is simply a single disk (12) It is difficult to maintain perfect air tightness because it is formed in order to improve air tightness during fluid control. However, when the fluid flow is changed, a leak occurs and the use of the high pressure main process system is extremely limited and it cannot be used.

Accordingly, the object of the present invention is to replace the ball valve or the grove valve which can maintain the perfect air tightness at the level of the ball valve or the grove valve, so that the weight is very high and the manufacturing cost is very high, and the fluid flow is bidirectional. In addition to providing a double disc control valve that can be installed without any distinction between the inlet and outlet sides.

The present invention for achieving the above object, the valve body is formed with a through-hole in the central portion so as to connect a pair of tubular body in the front, rear; A shaft installed to rotatably penetrate from the upper end center portion of the valve body to the lower end center portion; A first disk formed in a disc shape having a diameter corresponding to the through hole of the valve body, and having a fastening hole formed with a fastening hole to be fitted to the shaft at a lower portion of a central portion of one side; A second disk which is formed in a disk shape having a diameter corresponding to the through hole of the valve body, and a fastener having a fastening hole formed on the shaft to overlap the fastener of the first disk is formed at an upper end of the central portion of one side; It is to provide a double disk control valve comprising a; and airtight means installed on one side outer end of the first and second disks to be in close contact with the inner peripheral surface of the valve body.

Here, a pair of stoppers may be further installed at one front part and the other rear part of the inner circumferential surface forming the through hole of the valve body to constrain the rotation radius of the first and second disks.

In addition, on the other side of the first and second disks, a plurality of noise vibration preventing protrusions may be further protruded at a predetermined interval in the vertical direction of the first and second disks.

Here, the noise vibration preventing projections are preferably formed in a streamlined shape whose size gradually decreases from the central portion of the first and second disks toward both end portions thereof.

In addition, the noise vibration preventing projection is preferably formed such that the thickness of the cross-section is gradually reduced from the first and second disks toward the outside of the first and second disks.

In addition, the fasteners of the first and second disks are formed to be perforated so that a plurality of fluid through holes are spaced apart at regular intervals in the vertical direction of the first and second discs, and one side of the inner circumferential surface of the plurality of fluid through holes is formed to protrude. Can be.

Here, the fluid laminar flow guide protrusion is preferably formed such that the thickness of the cross-section is gradually reduced from the center portion toward the end portion of the fluid through-hole.

In addition, the airtight means may include a gasket having the other side attached to an outer circumferential end of one side of the first and second discs such that the outer circumferential surface of the first and second discs protrudes; And a retainer fixed by a plurality of fixing members to one side outer ends of the first and second disks so as to support one side of the gasket.

As described above, the double disc control valve according to the present invention, by using the first and second discs to double hermetic seal to greatly improve the airtight cross-sectional area, not only can the pressure of the operation be significantly improved, but also the high pressure fluid. It can maintain perfect air tightness during control and can replace ball valve or grove valve which are heavy and expensive for high pressure fluid control. It can be effected.

In addition, the double disc control valve according to the present invention has a weight that is about one third of that of the ball valve and the grove valve, and the structure is also very simple, so that the manufacturing cost can be drastically reduced, as well as the inlet and outlet sides. Since installation can be performed without any distinction, the installation work is very simple, which greatly reduces the production and work man-hours, thereby significantly reducing the delivery time of the land and marine plant facilities.

In addition, the double disc control valve according to the present invention has the effect that the through hole is double hermetically sealed by the first and second disc valves, thereby greatly extending the valve life and significantly reducing the maintenance cost.

In addition, the double disk control valve according to the present invention is the noise vibration damping projection protruding on the first and second disks, when the fluid collides with the high pressure to the first disk or the second disk when the valve is closed, the fluid is the noise Dispersed by the anti-vibration projections to impact the first disk or the second disk has an effect that can significantly reduce the noise and vibration in the valve body.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, the same reference numerals are given to the same parts as those of the conventional butterfly valve.

Figure 3 is a plan sectional view showing a closed state of the double disk control valve according to an embodiment of the present invention, Figure 4 is a plan sectional view showing an open state of the double disk control valve according to an embodiment of the present invention. to be.

3 and 4, the double disk control valve 1 according to an embodiment of the present invention, the valve body 10, the shaft 11, the first and second disks 12, 13, It is configured to include an airtight means (14).

The valve body 10 of the double disc control valve 1 according to an embodiment of the present invention configured as described above has a through hole (not shown) in the center portion so that a pair of tubular bodies can be connected to the front and rear portions. Is formed, the inner circumferential surface of the valve body 10 forming the through hole at the time of rotating the first and second disks 12 and 13 to close the double disk control valve 1 according to the present invention. A pair of contact protrusions 100 in close contact with the airtight means 14 provided at the end of the first and second disks 12 and 13 are formed to protrude.

The shaft 11 is installed in the valve body 10 so as to be rotatable from the upper end center portion of the valve body 10 to the lower end center portion.

The first disk 12 is formed in a disc shape so as to have a diameter corresponding to the through hole of the valve body 10, and is fitted to the shaft 11 at the lower end of one side central portion of the first disk 12. Losing fasteners 121 are formed fastening hole 120 is formed.

Like the first disk 12, the second disk 13 is formed in a disk shape having a diameter corresponding to the through hole of the valve body 10, the upper end of the central portion of one side of the second disk 13 A fastener 131 having a fastening hole 130 fitted into the shaft 11 is formed to protrude from the fastener 121 of the first disk 12.

The airtight means 14 is in close contact with a pair of tight protrusions 100 protruding from the inner circumferential surface of the valve body 10 forming the through holes so as to seal the through holes formed in the valve body 10. It is provided in the outer side edge part of one side of the 1st, 2nd disk 12 (13).

The airtight means will be described in detail with reference to FIG. 5 as follows.

Figure 5 is an enlarged view for explaining the airtight means of the double disk control valve according to an embodiment of the present invention.

Referring to FIG. 5, the airtight means 14 of the double disc control valve 1 according to the present invention includes the first and second discs such that an outer circumferential surface protrudes outward of the first and second discs 12 and 13. One side of the first and second disks 12 and 13 to support one side of the gasket 140 and the other side of which is attached to the outer peripheral end of one side of the side of the gasket 140. It consists of a retainer 142 fixed to the outer end by a plurality of fixing members 141.

More specifically, the gasket fixing jaws 122 and 132 and the retainer fixing jaws 123 and 133 are sequentially formed in the inward direction of the first and second disks 12 and 13 at one side outer peripheral end thereof. The other side of the gasket 140 is attached to the gasket fixing jaws 122 and 132 so that the outer circumferential surface of the first and second disks 12 and 13 is protruded, and the gasket fixing jaw 122 is attached thereto. Fixing grooves (122a, 132a) are formed in the center portion, the fixing projections (140a) are formed on both sides of the gasket 140 protruding projections formed on the other side of the gasket (140) The other side of the gasket 140 is fixed to the gasket of the first and second disks 12 and 13 so that the gasket 140 is inserted into and supported in the fixing grooves 122a and 132a formed at the center of the gasket fixing jaw 122 and 132. It is attached to the jaw 122,132.

In addition, the retainer 142 has a fixing groove 142a formed at the other side thereof, so that the fixing protrusion 140a protruding from one side of the gasket 140 is inserted into and supported by the retainer fixing jaw 123 and 133. It is fixed by a plurality of fixing members (141).

Figure 6 is another cross-sectional view of a double disc control valve according to an embodiment of the present invention, as shown in Figure 6 double disc control valve 1 according to an embodiment of the present invention, the valve body On one front part and the other rear part of the inner circumferential surface forming the through hole (not shown) of (10), the '-' shape that can restrain the radius of rotation of the first and second disks 12 and 13 A pair of stoppers 15 may be further installed.

In addition, on the other side of the first and second disks 12 and 13, a plurality of noise vibration preventing protrusions 16 may be further protruded at regular intervals in the vertical direction of the first and second disks 12 and 13. In addition, the noise vibration preventing projections 16 may be formed in a streamlined shape, the size of which gradually decreases from the center of the first and second disks 12 and 13 toward both ends.

In addition, the noise vibration preventing projection 16 is formed such that the thickness of the cross-section is gradually reduced from the first and second disks 12 and 13 to the outer direction of the first and second disks 12 and 13. It is desirable to be.

In addition, a plurality of fluid through-holes 18 are spaced in the fasteners 121 and 131 of the first and second disks 12 and 13 in the vertical direction of the first and second disks 12 and 13. It is formed to be spaced apart from each other, the fluid laminar flow guide protrusion 17 is formed on one side of the inner circumferential surface of the plurality of fluid through-holes 18.

In addition, the fluid laminar flow guide protrusion 17 is preferably formed such that the thickness of the cross-section is gradually reduced from the center portion toward both end portions of the fluid through hole 18.

Referring back to Figures 3 to 6 will be described the operation and effect of the double disk control valve according to the present invention.

3 to 6, the double disc control valve 1 according to the present invention, unlike the conventional butterfly valve is a through hole (shown by a pair of first and second disc valves 12, 13) Control of the flow of fluid through the

That is, as shown in FIG. 4, the operation lever (not shown) is rotated to one side while the valve is opened to rotate the shaft 11 and the first and second disks 12 and 13 connected to the operation lever. When rotated to one side as shown in Figures 3 and 6, as the first and second disks 12, 13 are rotated, a pair of mounted on the first and second disks 12, 13 The airtight means 14 is in close contact with the pair of contact protrusions 100 protruding from the valve body 10 forming the through holes, thereby allowing the through holes to be double sealed to control the flow of the fluid double. .

At this time, a pair of stoppers 15 are installed at one front portion and the other rear portion of the inner circumferential surface of the valve body 10 forming the through hole, as shown in FIG. 6, so that the first and second disks 12 and 13 are disposed. In addition to constraining the radius of rotation, the first and second disks 12 and 13 can be supported.

In addition, as shown in FIG. 6, a plurality of noise vibration preventing protrusions 16 are fixed on one side of the first and second disks 12 and 13 in the vertical direction of the first and second disks 12 and 13. When the fluid collides with the first disk 12 or the second disk 13 at high pressure when the valve is closed, the fluid is dispersed by the noise vibration preventing protrusion 16 so that the first disk ( 12) or to impinge on the second disk 13 to significantly reduce the noise and vibration in the valve body (10).

In addition, the noise-vibration preventing projections 16 have a first and second disks 12 so as to gradually decrease in size from the central portion of the first and second disks 12 and 13 toward both ends to form a streamlined shape. As well as protruding on one side of the (13), each of the noise dampening projections 16 toward the outer side of the first and second disks 12, 13 to the first and second disks 12, 13; The thickness of the cross-section is gradually reduced to minimize friction with the fluid passing through the through hole when the valve is opened, thereby smoothing the flow of the fluid, and the fluid passing through the through hole naturally maintains laminar flow. To satisfy the conditions that can be used as control valves.

In addition, the fasteners 121 and 131 of the first and second disks 12 and 13 are provided with a plurality of fluid through-holes 18 in the vertical direction of the first and second disks 12 and 13 at regular intervals. Perforations are formed to be spaced apart so that the fluid flow can be maintained smoothly even if pockets 19 are formed between the first and second disks 12 and 13.

In addition, a fluid laminar flow guide protrusion 17 may be installed at one side of the inner circumferential surface of the plurality of fluid through holes 18, and the fluid laminar flow guide protrusion 17 may be disposed at both ends of the fluid through hole 18 at a central portion thereof. As the thickness of the cross-section is gradually decreased, the frictional fluid can be smoothly minimized with the fluid passing through the through-hole when the valve is opened, and the fluid passing through the through-hole naturally reduces the laminar flow. It is a function to maintain.

As described above, the double disc control valve 1 according to the present invention uses the first and second discs 12 and 13 to double hermetic to greatly improve the airtight cross-sectional area, thereby greatly improving the working pressure. In addition, it is possible to replace the heavy and expensive ball valves or grove valves that are frequently used in high pressure fluid control by maintaining perfect air tightness even when controlling high pressure fluid. The cost of plumbing can be greatly reduced.

In addition, the double disc control valve 1 according to the present invention has a weight that is about one third of that of the ball valve and the grove valve, and the structure is also very simple, so that the manufacturing cost can be greatly reduced as well as the inlet side. Installation can be made without any distinction between the outlet and the outlet side, which greatly simplifies the installation and labor, thus greatly reducing the delivery time of the land and marine plant facilities.

In addition, the double disk control valve 1 according to the present invention has the effect that the through hole is double-sealed by the first and second disks 12 and 13 to significantly extend the valve life, thereby significantly reducing the maintenance cost.

In addition, the double disk control valve 1 according to the present invention is the first anti-vibration projection 16 is formed on the first and second disks 12, 13, the first disk 12 or the second when the valve is closed. When the fluid collides with the disk 13 at high pressure, the fluid may be dispersed by the noise vibration preventing protrusion 16 so that the fluid may collide with the first disk 12 or the second disk 13. 10) It is effective to greatly reduce the noise and vibration in the inside.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is a plan sectional view of a conventional butterfly valve according to the related art.

Figure 2 is a plan sectional view showing an operating state of a conventional butterfly valve according to the prior art.

Figure 3 is a plan sectional view showing a closed state of the double disc control valve according to an embodiment of the present invention.

Figure 4 is a plan sectional view showing an open state of the double disc control valve according to an embodiment of the present invention.

Figure 5 is an enlarged view for explaining the airtight means of the double disk control valve according to an embodiment of the present invention.

Figure 6 is another cross-sectional view of a double disc control valve according to an embodiment according to the present invention.

<Description of the symbols for the main parts of the drawings>

(1): double disc control valve 10: valve body

(11): shaft 12: first disc

(13): second disc 14: airtight means

(15): stopper (16): noise dampening projection

(17): fluid laminar flow guide protrusion (18): fluid through hole

Claims (8)

A valve body in which a through hole is formed in the center portion so as to connect a pair of pipes to the rear portion; A shaft installed to rotatably penetrate from the upper end center portion of the valve body to the lower end center portion; A first disk formed in a disc shape having a diameter corresponding to the through hole of the valve body, and having a fastening hole formed with a fastening hole to be fitted to the shaft at a lower portion of a central portion of one side; A second disk which is formed in a disk shape having a diameter corresponding to the through hole of the valve body, and a fastener having a fastening hole formed on the shaft to overlap the fastener of the first disk is formed at an upper end of the central portion of one side; And And an airtight means installed on one side outer end portion of the first and second disks to be in close contact with the inner circumferential surface of the valve body. On the other side of the first and second disks, a plurality of noise anti-vibration protrusions are further formed at predetermined intervals in the vertical direction of the first and second disks. The fasteners of the first and second disks are formed to be perforated so that a plurality of fluid through holes are spaced apart at regular intervals in the vertical direction of the first and second discs, and one side of the inner circumferential surface of the plurality of fluid through holes protrudes from the fluid laminar induction protrusions. Featured double disc control valve. The method of claim 1, Double disk control valve, characterized in that a pair of stoppers are further provided on one side front portion and the other rear portion of the inner peripheral surface forming the through-hole of the valve body to restrain the radius of rotation of the first and second disks. delete The method of claim 1, The noise vibration preventing projection is a double disk control valve, characterized in that formed in a streamlined shape that gradually decreases in size from the central portion of the first and second disk toward both ends. The method of claim 4, wherein The noise damping projection has a double disk control valve, characterized in that the thickness of the cross-section is gradually reduced from the first and second disks toward the outside of the first and second disks. delete The method of claim 1, The fluid laminar flow guide projection, characterized in that the thickness of the cross-section is gradually reduced from the central portion toward both ends of the through-hole through the fluid. The method of claim 1, The hermetic means, A gasket having the other side attached to an outer circumferential end of one side of the first and second discs such that the outer circumferential surface of the first and second discs protrudes; And And a retainer fixed by a plurality of fixing members to one side outer ends of the first and second discs so as to support one side of the gasket.

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