KR101791591B1 - Ball valve comprising a cavitation reducing disk - Google Patents

Ball valve comprising a cavitation reducing disk Download PDF

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Publication number
KR101791591B1
KR101791591B1 KR1020150161854A KR20150161854A KR101791591B1 KR 101791591 B1 KR101791591 B1 KR 101791591B1 KR 1020150161854 A KR1020150161854 A KR 1020150161854A KR 20150161854 A KR20150161854 A KR 20150161854A KR 101791591 B1 KR101791591 B1 KR 101791591B1
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KR
South Korea
Prior art keywords
valve
ball
chamber
handle
valve ball
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KR1020150161854A
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Korean (ko)
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KR20170058084A (en
Inventor
박영철
성정현
황영준
변지향
Original Assignee
동아대학교 산학협력단
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Priority to KR1020150161854A priority Critical patent/KR101791591B1/en
Publication of KR20170058084A publication Critical patent/KR20170058084A/en
Application granted granted Critical
Publication of KR101791591B1 publication Critical patent/KR101791591B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
    • F16K47/045—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member and the closure member being rotatable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0647—Spindles or actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Details Of Valves (AREA)

Abstract

The present invention relates to a ball valve including a disc having a plurality of voids formed in a ball valve to disperse a pressure of the introduced fluid to thereby reduce a cavitation phenomenon. The ball valve includes a through- The valve body includes a valve body and a chamber formed in the front and rear of the body so as to allow the fluid inlet and outlet to pass therethrough. The valve body includes a valve ball rotatably disposed around the one axis in the valve body, A disk formed with a gap and coupled to the chamber of the valve ball, and a handle that rotates the valve ball through engagement with the valve ball through one side of the valve body.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ball valve including a disk for reducing cavitation,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball valve with reduced cavitation during opening and closing, and more particularly, to a ball valve having a plurality of voids formed therein in a ball valve to disperse pressure of inflow fluid, The present invention relates to a ball valve including a disc for use with a disc.

A valve is a mechanical element used in various piping to control the flow rate or pressure of a fluid in a pipe, or to control the flow of a fluid, and various kinds of valves are selected and used according to piping conditions and required functions in the piping.

A ball valve, which is one kind of such a valve, is a ball having a circular through hole as an element for controlling the flow rate, and the ball is a ball which is a flow path of the fluid And is rotated in accordance with the rotation of a stem provided in a direction perpendicular to the through hole.

Here, the stem may include a drive mechanism such as a manual lever, a manual gear, a manual gear with chain wheel, a pneumatic actuator, an electric actuator, And the rotation of the ball is induced according to the operation of the driving mechanism, and the ball provided inside the ball valve is also referred to as a valve ball.

Such techniques related to the ball valve are disclosed in Korean Patent Laid-Open Publication No. 10-2001-0009678 entitled " Double Blocking and Opening Device of Ball Valve ", Registered Utility Model Registration No. 20-0418253 "Flow Control Ball Valve" And so on.

In the conventional ball valve as described above, when the flow path formed through the valve ball and the flow path of the fluid coincide with each other, the valve ball is allowed to flow in the full open state, When the flow path is 90 ㅀ and the ball valve is in a full close state, the fluid is prevented from flowing.

When it is necessary to adjust the flow rate of the fluid flowing through the ball valve, the valve ball is rotated at a predetermined angle so that the through hole of the ball and the flow path of the fluid have a partial open state at an angle of 90 ㅀ or less.

However, in the conventional ball valve, when the flow rate is adjusted by adjusting the rotation angle of the valve ball, sudden cavitation occurs at the inlet of the flow path of the valve ball into which the fluid flows, thereby shortening the lifetime of the valve ball I had.

Accordingly, the present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a valve having a plurality of voids formed in a flow path of a valve ball to further disperse the pressure of the inflow fluid, And to provide a valve.

Technical Solution According to an aspect of the present invention, there is provided a ball valve including a disc for reducing cavitation, comprising: a valve body having a through-passage formed in a front-back direction; A valve ball provided in the valve body so as to be rotatable about a single axis; A disk having a plurality of through-holes formed therein to reduce cavitation occurring in the chamber of the valve ball, the disk coupled to the chamber of the valve ball; And a handle that rotates the valve ball through one side of the valve body and coupled with the valve ball.

In addition, the disk may be configured to block the chamber of the valve ball through a rotational force transmitted from the handle when the ball valve is opened.

Further, the disk may be lowered from the upper part of the chamber of the valve ball to block the chamber when the ball valve is opened.

The rotation shaft of the handle and the disk are formed with gears meshed with each other such that the disk is lifted or lowered in accordance with the rotational direction of the handle .

In addition, a lower end of the lowered disk is seated in a lower portion of the chamber in the valve ball, and a seating groove for supporting a lower portion of the disk is formed from a pressure of fluid introduced into the chamber.

In addition, the disc may be characterized in that, when the ball valve is opened, first, the disc rotates coaxially with the handle in the chamber of the valve ball to block the chamber.

In addition, the disk is coupled with the handle of the handle through the upper portion of the valve ball to rotate together with the handle, and the valve ball rotates with the handle after allowing the wheel to rotate by a predetermined angle . ≪ / RTI >

The swirl member may further include a swirl member coupled to the chamber in a direction in which the fluid flows into the chamber, wherein the swirl member is rotated in a direction in which the chamber is formed.

In addition, the spiral member may include a rotor having a rotation axis in a direction in which the chamber is formed.

According to the ball valve including the disk for reducing cavitation as described above,

First, a disc having a plurality of voids formed in the ball valve is additionally provided to reduce the flow rate of the fluid, disperse the fluid, thereby reducing the cavitation occurring in the ball valve, and the lifetime of the ball valve is increased.

Second, when the handle is rotated in the closing direction after the ball valve is opened, the disc that has blocked the chamber of the valve ball is rotated or lifted and opened to open the chamber, so that the fluid can pass through the ball valve without reducing the pressure if necessary.

Third, a vortex member for rotating the fluid introduced into the valve ball together with the disc is installed together, and the flow rate of the introduced gas is constant, so that cavitation occurring in the ball valve can be further reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an outline of a ball valve including a disk for reducing cavitation according to an embodiment of the present invention; FIG.
FIG. 2 is a front view showing a state in which a ball valve including a disc for reducing cavitation according to the first embodiment of the present invention is closed. FIG.
3 is a front view showing a state in which a ball valve including a disc for reducing cavitation according to the first embodiment of the present invention is opened.
FIG. 4 is a front view showing a state in which a disc in a valve ball is lifted and lowered when a ball valve including a disc for reducing cavitation according to the second embodiment of the present invention is closed; FIG.
5 is a front view showing a state in which the disc is lowered in the valve ball when the handle is rotated in the opening direction in closing the ball valve including the disc for reducing cavitation according to the second embodiment of the present invention.
6 is a front view showing the state of the valve ball and the disc when the ball valve is opened including the disc for reducing cavitation according to the second embodiment of the present invention;
FIG. 7 is a front view showing a state of a disk rotated from a chamber of a valve ball to an open state during closing of a ball valve including a disk for reducing cavitation reduction according to a third embodiment of the present invention, Fig.
FIG. 8 is a front view showing the state of the disc being rotated in the closed state by the rotation of the handle in the chamber of the valve ball when the ball valve including the disc for cavitation reduction according to the third embodiment of the present invention is closed; FIG. 3 is a partial plan view showing a state of engagement between a rotation shaft and a valve ball.
FIG. 9 is a front view showing the state of the valve ball and the disc when the ball valve including the disc for reducing cavitation reduction according to the third embodiment of the present invention is opened.
FIG. 10 is a perspective view illustrating a state where a disk and a swirl member are installed in a valve ball of a ball valve including a disk for cavitation reduction according to a fourth embodiment of the present invention; FIG.

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

Referring to FIG. 1, a ball valve 100 including a disc 150 for reducing cavitation according to an embodiment of the present invention is installed in a pipe to control fluid flowing through the pipe.

The embodiment of the present invention can be generally installed by connecting a pipe to a through passage 108 formed in the valve body 101. When the handle 130 coupled to the upper portion of the valve body 101 is rotated The valve ball 140 built in the valve body 101 rotates together to open and close the valve.

Particularly, in the embodiment of the present invention, in addition to the valve ball 140 for opening and closing the valve, a separate disk 150 is provided in the valve ball 140 to reduce the cavitation occurring in the valve ball 140 .

Cavitation is a phenomenon in which, when a low pressure is generated in a fluid, gases that have dissolved in the water are gathered to form a cavity (bubble). When the generated bubble moves to a position of high pressure, the bubble collapses rapidly, This is a phenomenon that occurs.

Particularly, in the ball valve 100, the inner circumferential surface of the valve ball 140, which blocks and opens the flow path during the opening and closing operation, So that the life of the valve is shortened.

The embodiment of the present invention reduces the flow velocity of the disk 150 provided in the chamber 146 of the valve ball 140 and reduces the cavitation by dispersing the pressure of the introduced fluid through the plurality of air gaps 158, Thereby increasing the overall lifetime of the battery 100.

2 and 3, a ball valve 100 including a disk 150 for reducing cavitation according to the first embodiment of the present invention includes a valve body 101 having a through passage 108 formed in the front- And a valve 146 formed in the valve body 101 so as to be rotatable about one axis in the valve body 101 and a valve hole A disc 150 formed with a plurality of perforated cavities 158 for reducing cavitation occurring in the valve body 140 and coupled onto the chamber 146 of the valve ball 140, And a handle 130 that rotates the valve ball 140 through engagement with the valve ball 140 through one side.

The valve body 101 is a housing of the ball valve 100, and the valve ball 140 is installed on the through-passage 108 formed in the front-rear direction.

A handle 130 coupled to the valve ball 140 is coupled to the valve body 101 to rotate the valve ball 140. When the rotational force is inputted from the handle 130, the rotational force is transmitted to the valve ball 140 through the rotational shaft 131 of the handle 130. The handle 130 may be implemented with a manual lever, pneumatic actuator, electric actuator, or the like.

The disk 150 is coupled onto the chamber 146 of the valve ball 140 and interferes with the flow of fluid entering the chamber 146 to reduce cavitation in the valve ball 140 .

The first embodiment of the present invention is characterized in that the disk 150 is fixedly coupled so as to block the chamber 146 of the valve ball 140. When the valve is closed, The side surface of the valve ball 140 in which the chamber 146 is not formed is positioned in the through passage 108 of the valve body 101 to block the valve and the handle 130 is rotated As shown in FIG. 3, when the chamber 146 of the valve ball 140 is positioned in the through passage 108 of the valve body 101, the valve is opened so that the fluid can pass through the valve. As shown in FIG. 3, even if the valve is opened, since the disk 150 coupled to the chamber 146 of the valve ball 140 blocks the chamber 146, the fluid has to flow limitedly, So that the cavitation phenomenon is reduced.

3 shows that the fluid outlet 148 formed in the valve ball 140 is narrower than the through passage 108 of the valve body 101 and the diameter of the disk 150 is smaller than the diameter of the fluid inlet / 148 of the valve ball 140, it is intended to clearly understand the position of the structure through the drawings, and in the product practiced according to the present invention, the diameter of the fluid inlet 148 of the valve ball 140, It is preferable that the diameter of the through passage 108 of the valve body 101 and the diameter of the disk 150 are similar.

Another embodiment of the present invention is characterized in that the disc 150 first blocks the chamber 146 of the valve ball 140 through the rotational force transmitted from the handle 130 when the ball valve 100 is opened .

4 to 6, in a second embodiment of the present invention, in particular, in the first embodiment, the disc 150 is coupled to the chamber 146 of the valve ball 140 so as to be raised and lowered, The disk 150 is first lowered above the chamber 146 of the valve ball 140 to shut off the chamber 146 when the ball valve 100 is opened.

The second embodiment of the present invention will be described in more detail. The second embodiment has a valve body 101 in which a through passage 108 is formed in the front-rear direction, a chamber 146 formed so as to penetrate the fluid inlet / A valve ball 140 rotatably disposed around the one axis in the valve body 101 and a plurality of through holes 140 formed in the valve body 140 to reduce cavitation occurring in the chamber 146 of the valve ball 140. [ A gap 158 is formed and is engaged with the valve ball 140 by being engaged with the valve ball 140 through one side of the valve body 101 and the disk 150 coupled into the chamber 146 of the valve ball 140. [ A housing part 147 for accommodating the lifted disk 150 is formed in the upper part of the chamber 146 in the valve ball 140 and the rotation shaft 131 And the disc 150 are rotatably supported by gears that are meshed with each other such that the disc 150 is lifted or lowered in accordance with the rotational direction of the handle 130 When the sex, be a ball valve 100 is opened to the disk 150 descends from the upper chamber 146 of valve ball 140 has a characteristic that blocks the chamber 146.

As shown in the figure, in the second embodiment, the rotation shaft 131 of the handle 130 combined with the valve ball 140 is coupled to idle on the valve ball 140, and the rotation shaft 131 of the handle 130 is rotated, The handle 130 can no longer idle in the valve ball 140 and the valve ball 140 rotates together with the handle 130. As a result,

A screw gear 135 like a male screw is formed on the rotating shaft 131 of the handle 130 as shown in the drawing of the second embodiment, A nut (not shown) may be formed on the disk 150 so as to enable the same drive as that of the rack gear 155 in the height direction, Or to the screw gear 135 formed thereon.

The accommodating portion 147 formed on the chamber 146 in the valve ball 140 to accommodate the lifted disk 150 is preferably formed to correspond to the shape of the disk 150. [ In the second embodiment, half of the height of the disk 150 is limited to the height of the lifting height. However, the diameter of the fluid inlet 148 and the chamber 146 of the valve ball 140, The entire disk 150 lifted up to the storage portion 147 can be completely housed.

The upper part of the disk 150 which is lifted and lowered in the valve ball 140 is supported by the rotation axis 131 of the handle 130 but the lower part is not supported and if the pressure of the fluid to be introduced is strong, There is a risk that stress will be applied and the valve ball 140 will be detached or destroyed. The lower end of the lowered disk 150 is seated under the chamber 146 in the valve ball 140 and the lower portion of the disk 150 is pressed against the pressure of the fluid introduced into the chamber 146 A seating groove 149 is formed.

The lower portion of the disk 150 is supported by the upper and lower portions of the disk 150 so that the pressure of the introduced fluid can be more easily tolerated.

In addition, though not shown in the drawing, a guide for guiding both ends of the disk 150 may be additionally provided on both sides of the chamber 146 in the valve ball 140 in a height direction so as to function as the seating groove 149 have.

When the handle 130 is rotated in the opening direction in the ball valve 100 of the second embodiment in the closed state, the valve ball 140 is first rotated while the handle 130 is rotating, The lower portion of the disk 150 is attached to the lower portion of the chamber 146 by receiving the rotational force from the rotation axis 131 of the coupled handle 130 of the disk 150 located in the housing portion 147 of the disk 150, (See Figs. 4 and 5)

When the disc 150 is lowered to the limit due to the rotation of the handle 130, the rotational force of the handle 130 is transmitted to the valve ball 140 so that the valve ball 140 rotates in the rotating direction of the handle 130 (See Fig. 6)

When the valve ball 140 rotates together with the handle 130 and the through hole 108 of the valve body 101 and the fluid inlet 148 of the valve ball 140 are electrically connected to each other, And flows through the ball valve 100 of the second embodiment.

At this time, the fluid introduced into the valve ball 140 is dispersed as it passes through the cavities 158 of the disk 150, and the flow velocity is reduced, so that cavitation occurring on the valve ball 140 is reduced.

When the handle 130 is rotated in the closing direction until the valve ball 140 rotates together after the valve ball 140 of the second embodiment is rotated to the fully opened state, the disk 150 is lifted upward, The chamber 146 of the chamber 140 is opened so that the fluid can flow to the original pressure.

Next, a third embodiment of the present invention will be described.

7 to 9, in a third embodiment of the present invention, in particular, in the first embodiment, the disc 150 is rotatably coupled coaxially with the handle 130, and the ball valve 100 When the disc 150 is opened, the disc 150 first rotates to block the chamber 146. [

A valve body 101 in which a through passage 108 is formed in the front and rear direction and a chamber 146 formed so as to allow fluid inlets 148 to pass through the front and rear sides, A plurality of through holes 156 are formed in the valve body 101 so as to reduce cavitation occurring in the chamber 146 of the valve ball 140 and a valve ball 140 rotatably disposed around the one axis in the valve body 101, A disk 150 formed and coupled to the chamber 146 of the valve ball 140 and a handle 152 that rotates the valve ball 140 through engagement with the valve ball 140 through one side of the valve body 101 The disc 150 is coupled with the rotation axis 131 of the handle 130 passing through the upper portion of the valve ball 140 and rotates together with the handle 130. The valve ball 140 rotates together with the handle 130, (130), and rotates together with the handle (130) after allowing rotation by a predetermined angle.

The configuration in which the valve ball 140 rotates together with the handle 130 after permitting the rotation of the handle 130 by a predetermined angle is configured such that the rotational axis 131 of the handle 130 rotates together with the valve 130 as in the third embodiment, And is formed with a latching blade 132 protruding from the side surface of the rotating shaft 131 of the handle 130. The valve stem 140 is formed with a rotation shaft 131 The engaging protrusion 142 may be formed so as to protrude and protrude enough to allow the rotation of the engaging blade 132. The latching protrusion 142 formed on the valve ball 140 is rotated by 90 degrees in the direction of the rotation of the latching blade 132. The latching protrusion 142 is formed on both sides of the rotation axis 131 of the handle 130 in the third embodiment, ㅀ.

When the handle 130 of the third embodiment in the closed state is rotated in the opening direction, the operation of the disk 150 in the valve ball 140 until the handle 130 rotates by 90 [ (See Figs. 7 and 8)

When the handle 130 rotates 90 degrees, the engagement wing 132 formed on the rotary shaft 131 of the handle 130 contacts the engagement protrusion 142 of the valve ball 140, And the valve ball 140 is also rotated (see Fig. 9).

When the valve ball 140 rotates together with the handle 130 and the through hole 108 of the valve body 101 and the fluid inlet 148 of the valve ball 140 are electrically connected to each other, It is possible to pass through the third embodiment.

At this time, the fluid introduced into the valve ball 140 is dispersed while passing through the gaps 158 of the disk 150, and the flow velocity is reduced, and the cavitation occurring on the valve ball 140 is reduced.

When the handle 130 is rotated 90 degrees in the closing direction after the valve ball 140 of the third embodiment is rotated to the fully opened state, the disc 150, which has shut the chamber 146 of the valve ball 140, The chamber 146 of the valve ball 140 is opened by rotating the rotary shaft 131 of the rotary valve 130 by 90 degrees to allow the fluid to flow through the original pressure.

Next, a fourth embodiment of the present invention will be described.

10, in order to further reduce the cavitation occurring in the valve ball 140, the fourth embodiment of the present invention is configured such that the fluid is introduced into the chamber 146 of the valve ball 140, And a swirl member 160 coupled to the chamber 146 in advance to allow the fluid flowing into the chamber 146 to rotate and flow in the direction in which the chamber 146 is formed.

The vortex member 160 may include a rotor having a rotation axis 131 in which the chamber 146 is formed. When the fluid flows into the chamber 146 of the valve ball 140, So that the flow rate of the fluid flows constantly while the fluid flows in the direction in which the chamber 146 is formed. The sudden change of the hydraulic pressure at the time of inflow and outflow of the fluid by the swirl member 160 is reduced, and the cavitation phenomenon generated in the valve ball 140 is reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the present invention, which is defined by the limitations of the following claims.

100: Ball valve 101: Valve body
108: penetrating passage 130: handle
131: rotating shaft 132:
135: Screw gear 140: Valve ball
142: latching protrusion 146: chamber
147: compartment 148: fluid inlet
149: seat groove 150: disk
155: rack gear 158: air gap
160: Swirl member

Claims (9)

A valve body having a through-passage formed in the front-rear direction;
A valve ball provided in the valve body so as to be rotatable about a single axis;
A disk having a plurality of through-holes formed therein to reduce cavitation occurring in the chamber of the valve ball, the disk coupled to the chamber of the valve ball;
And a handle for rotating the valve ball through one side of the valve body to be coupled to the valve ball,
The disc descends from the top of the chamber of the valve ball first to shut off the chamber when the ball valve is opened,
Wherein the handle is rotatably coupled on the valve ball so that the handle can not idle on the valve ball when the disc engaged with the handle of the handle is lowered to a limit, And the ball valve is rotated. delete delete The method according to claim 1,
A storage portion for storing the lifted disk is formed in an upper portion of the chamber in the valve ball,
Wherein the rotating shaft of the handle and the disc are formed with gears that mesh with each other such that the disc is lifted or lowered according to the rotational direction of the handle. 5. The method of claim 4,
Wherein a lower end of the lowered disk is seated on a lower portion of the chamber in the valve ball to form a seating groove for supporting a lower portion of the disk from the pressure of the fluid introduced into the chamber. delete delete The method according to claim 1 or 4,
Further comprising a vortex member coupled to the valve chamber in a direction in which the fluid flows into the chamber, the vortex member rotating and flowing the fluid introduced into the chamber in the direction in which the chamber is formed. 9. The method of claim 8,
Wherein the vortex member includes a rotor having a rotation axis in a direction in which the chamber is formed.
KR1020150161854A 2015-11-18 2015-11-18 Ball valve comprising a cavitation reducing disk KR101791591B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150161854A KR101791591B1 (en) 2015-11-18 2015-11-18 Ball valve comprising a cavitation reducing disk

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Application Number Priority Date Filing Date Title
KR1020150161854A KR101791591B1 (en) 2015-11-18 2015-11-18 Ball valve comprising a cavitation reducing disk

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KR20170058084A KR20170058084A (en) 2017-05-26
KR101791591B1 true KR101791591B1 (en) 2017-11-20

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112958547B (en) * 2021-02-04 2022-10-25 陈琼 Fixing device for mounting environmental protection equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001059576A (en) * 1999-08-23 2001-03-06 Kubota Corp Sub-valve built-in type rotary valve
JP2002039404A (en) * 2000-07-12 2002-02-06 Chinryan Cho Valve structure for breaking differential pressure of liquid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001059576A (en) * 1999-08-23 2001-03-06 Kubota Corp Sub-valve built-in type rotary valve
JP2002039404A (en) * 2000-07-12 2002-02-06 Chinryan Cho Valve structure for breaking differential pressure of liquid

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