KR20150123026A - Control valve with balance-hall for controlling fluid flux - Google Patents

Abstract

The present invention relates to a control valve including a balance hole for controlling a fluid. The control valve installed on a path to allow a fluid to flow comprises: a valve body part including a body including an inlet and an outlet in order to allow a fluid to flow in and to flow out, a cage embedded in the body and including a flowing hole to allow a fluid to pass through a lateral part while having a hollow column form whose both surfaces are opened, and a disc embedded in the cage for opening and closing the flowing hole while being moved by a stem with which one end part is combined; and an operating means mounted on the body while inducing the movement of the stem. The operating means includes: a connecting part mounted on the body and including a first body wherein the other part of the stem is located; and a motor actuator including a working rod, with which the other end of the stem is combined, mounted on the first body to induce the movement of the stem and the disc as the working rod is reciprocating. As some of a fluid flowing through a balance hole flows into a disc, the uniform flow pressure of the fluid with respect to the movement of the disc can be maintained.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a control valve having a balance hole for fluid control,

The present invention relates to a pneumatic control valve, and more particularly to a pneumatic control valve having a control valve provided with a fluid control balance hole for allowing a part of a fluid to pass through a balance hole, .

In general, the types of pneumatic control valves include directional control valves, flow control valves, and pressure control valves. Here, a pneumatic control valve used to control the flow rate of a fluid including heavy fuel oil (HFO) is usually installed on the flow path of the fluid.

Such a pneumatic control valve is used, for example, as a part of a pneumatic temperature control system in a heavy oil purification and heating apparatus for heating a heavy fuel oil (HFO) to a predetermined temperature. As shown in FIG. 1, the heavy oil purification and heating apparatus includes a heavy oil heating apparatus 10 installed to heat a heavy oil (HFO) introduced and discharged by supplied high temperature steam, a heating apparatus Directional control valve 11 installed on the steam path so as to control the flow rate of steam supplied to the heater 10 and the operation of the control valve 11 by measuring the temperature of the heavy oil discharged from the heavy oil heater 10 And a temperature controller (12) installed to control the temperature. The temperature controller 12 controls the operation of the control valve 11 and regulates the amount of flow of the steam to supply it to the heavy oil heater 10 so as to adjust the temperature of the heavy oil discharged from the heavy oil heater 10 . The reference numeral 13 is a filter / regulator for filtering and supplying the externally introduced air.

Here, the control valve 11 is configured to completely or partially open or close steam by the air pressure supplied from the temperature controller 12. [

However, it has been required to develop a technique for controlling a pressure change in the control valve 11 that controls the flow rate of the steam while the steam is flowing. Further, in order to finely control the flow rate of the steam in the control valve 11 The present applicant has been conducting research and development on various structures.

KR1103056 10 KR2004-0096465 10 KR0257110 20 KR0233465 20

The present invention, which has been devised by research and development of various structures as described above, has a structure in which a flow hole formed to allow steam to flow through a cage is opened and closed while a disk is moving to control the flow rate more finely, And an object of the present invention is to provide a control valve provided with a fluid control balance hole through which a hydraulic pressure is controlled to pass through a hole.

In order to achieve the above object, a control valve provided with a balance hole for fluid control according to a first embodiment of the present invention is a control valve provided on a flow path of a fluid to control a flow rate, A cage which is formed in the body and has a hollow pillar opening on both sides thereof and in which a flow hole is formed to allow the fluid to pass through the side, A valve body including a disk that is moved by the stem and opens and closes the flow hole; And a driving unit mounted on the body while inducing movement of the stem, wherein the driving unit includes a connecting part having a first body in which the other part of the stem is disposed inside the body, And a motor actuator mounted on the first body to reciprocate the operation rod to induce movement of the stem and the disk.

Here, the motor actuator may further include a switching lever installed to automatically or manually change the movement of the operating rod, and a handle installed to move the operating rod in the manual mode.

The disc has a shape having an inclined portion which is inwardly inclined with respect to the inner surface of the cage and which keeps the airtightness through the hermetic member and has a smaller diameter than the upper portion and a flat lower portion connected to the inclined portion, The upper inclined portion is provided with a concave shaped buffer portion attached to the bottom surface of the buffer member in order to restrict excessive movement when the flow hole is moved to completely close the flow hole, And a second sheet disposed so as to protrude further inward than the first sheet.

The first body is provided with an indicator or a ruler to indicate the position of the stem and is further provided with a door or a transparent slot so that the indicator or the ruler can be visually confirmed from the outside.

The control valve provided with the balance hole for fluid control according to the second embodiment of the present invention is provided with an inlet and an outlet for flowing and discharging fluid, A cage having a body, a cage formed by combining an upper cage and a lower cage, both of which are hollow pillar-shaped, open in both sides and having a flow hole for allowing fluid to pass through a side of the lower cage, A valve body including a disc for opening and closing the flow hole while being moved by a stem coupled to the one side portion; And a driving unit mounted on the body while inducing movement of the stem, wherein the driving unit includes a second body through which the other side of the stem passes while being mounted on the body, and a second body located on the other side of the stem, A gear portion fixed to a portion of the push rod which is engaged with the other end portion of the stem, a gear portion provided with a worm and a worm wheel installed to operate in conjunction with the gear, and a handle provided to actuate the worm wheel, A diaphragm cover having a part of the push rod located inside the diaphragm cover; a diaphragm installed in the diaphragm cover and coupled to the other end of the push rod to move by pneumatic pressure; and an elastic member installed to return the diaphragm moved to the original position And a diaphragm portion provided with the diaphragm portion.

The diaphragm unit may further include a volume booster installed to supply air to the diaphragm, and a valve positioner coupled to the volume booster to increase or decrease the amount of air supplied to the diaphragm in preparation for hysteresis of the diaphragm.

The disc has a shape having an inclined portion which is inwardly inclined with respect to the inner surface of the cage and which keeps airtightness through the airtightness member and has a smaller diameter than the upper portion and a flat lower portion connected to the inclined portion, In order to restrict excessive movement when the flow hole is moved to completely close or open, the projection provided on the upper part of the upper cage protruding inwardly from the inner surface of the lower cage, And is brought into contact with the projecting portion of the second sheet arranged so as to project further inward than the inner surface of the cage.

The second body may include an indicator or a ruler to indicate the position of the stem and may further include a door or a transparent slot so that the indicator or the ruler can be visually recognized from the outside.

A balance hole is formed in the disk so that a part of the fluid flows through the disk to reduce the increase or decrease in the hydraulic pressure due to the movement of the disk while the fluid passes through the flow hole and flows to the discharge port.

The flow hole is characterized in that the side shape is at least one of a quadrangle, a circle, a funnel shape, or a bowl shape.

As described above, according to the present invention, a balance hole formed through a part of the disk built in the cage is located on the flow path of the fluid, and a part of the fluid flowing through the balance hole can be introduced into the inside of the disk The flow pressure of the fluid relative to the movement of the disk can be maintained constant.

In addition, by varying the shape and size of the flow holes formed through the cage, the cage formed with the flow holes having different shapes can be easily replaced according to the kind or use place of the fluid to vary the flow amount of the fluid within the limited movement range of the disk There is an effect that can be.

In addition, since the disk is formed in a substantially U-shaped flat surface having a flat bottom, a protrusion is formed or a buffer is formed, and the inner diameter of a part of the cage where the flow hole is formed is expanded so that the projection and the buffer are positioned. Is minimized.

Further, the protrusions provided on the outer surface of the disc guide the movement of the disc moving inside the cage while finely shielding the flow holes formed in the cage while controlling the flow amount of the fluid.

The projections prevent the release of disengagement between the disk and the cage and allow the projections to move between the projections formed at the joints of the upper and lower cages and the projections formed at the joints of the lower cage and the second sheet, , There is an effect that the moving range is limited.

In addition, since the cushioning portion formed on the outer surface of the disk and having a shock-resistant material and the protruding portion formed at the coupling portion between the cage and the second sheet come into contact with each other by downward movement of the disk, There is an effect that breakage is minimized.

Further, since the cage is fixed to the body through the separately manufactured seat, the cage can be easily assembled to the body by the seat, and the cage can be easily replaced.

By providing an indicator or a ruler on the connecting part or the second body and providing a door or a transparent slot for visually checking the opening or closing degree of the valve from outside, it is possible to recognize the degree of opening and closing of the valve according to the position of the stem .

In addition, the airtightness between the disc and the cage is prevented by the airtightness of the airtightness member including the U-seal.

Also, by manufacturing the cage by cutting, it is possible to manufacture a cage having various fluid flow holes for a shorter period of time than in the case of a conventional mold, and to reduce the manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be interpreted.
1 is a schematic view showing a temperature control system in a conventional heavy oil purification and heating apparatus.
2 is a side cross-sectional view schematically showing a control valve provided with a balance hole for fluid control according to the first embodiment of the present invention.
FIG. 3 is an enlarged view showing a coupling portion of the disk and the cage shown in FIG. 2;
Figures 4A-4D show various forms of flow holes formed in the cage of Figure 2;
5 is a side cross-sectional view schematically illustrating a second embodiment of the present invention.
6 is an enlarged view showing a side cross-section of the diaphragm portion shown in Fig.
7 is an enlarged view showing a side cross-section of the actuator and the gear portion shown in Fig.
8 is an enlarged view showing a side cross-section of the valve body portion shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

<Configuration>

The valve for controlling flow according to the present invention includes a body 110 installed on a flow path of a fluid, a disk 120 installed in the body 110 to adjust the flow amount of the fluid, a disk 120 coupled to the disk 120, And a drive means coupled to the valve body portion 110 to drive movement of the stem 140. The valve body portion 110 includes a valve body portion 100 having a stem 140 for inducing movement of the stem 140,

Hereinafter, the first embodiment in which the driving means includes the connecting portion 210 and the motor actuator 200, and the second embodiment including the gear portion 400 and the diaphragm portion 300, Explain.

&Lt; Embodiment 1 >

FIG. 2 is a side sectional view schematically showing a control valve provided with a balance hole for fluid control according to the first embodiment of the present invention, FIG. 3 is an enlarged view showing a coupling portion of the disk and the cage shown in FIG. 2 , Figs. 4A to 4D are views showing various forms of the flow holes formed in the cage of Fig.

As shown in FIG. 2, the control valve provided with the fluid control balance hole according to the present invention includes a motor actuator 200, a connection portion 210, and a valve body portion 100.

First, the motor actuator 200 typically has a structure for converting the rotational motion of the motor into the linear motion of the actuating rod 201. The motor actuator 200 includes a switching lever 202 for switching between manual or automatic switching as shown in Fig. 2 and a switching lever 202 for switching the first And a handle 203.

2, the connection unit 210 includes a first body 211 interposed between and fixed to the motor actuator 200 and the valve body 100, and a second body 211 interposed between the motor actuator 200 and the valve body 100, (Not shown). One side of the stem 140 is attached to one end of the actuating rod 201 of the actuator 200 in a clamping manner and the other side of the stem 140 passes through the first body 211, (Not shown).

The connecting portion 210 supports the stem 140 and allows the motor actuator 200 and the valve body 100 to be connected to each other. Of course, the stem 140 is disposed over the connection portion 210 and the valve body portion 100, and the sealing between the stem 140 and the connection portion 210, the stem 140, and the valve body portion 100 may be separate It is natural that it is held by the airtight member.

In addition, an indicator or a ruler is built in the connection part 210 and a door or a transparent slot for visually confirming the indicator or the ruler is provided to the outside of the connection part 210. The position of the disc 120 is changed according to the position of the stem 140 The degree of opening and closing of the flow hole 131 can be confirmed.

Next, the valve body 100 includes a body 110 installed on a flow path of the fluid and having an inlet 111 and an outlet 112, and a valve body 110 installed inside the body 110, A disk 120 coupled to the other side of the stem 140, a disk 120, and a cage 130, which is installed in the cage 130, And a hermetic member 150 mounted on the outer surface of the disk 120 to maintain the airtightness between the disk 110 and the disk 120.

The body 110 is fixed on a part of the opposite side of the actuator 200 from the connection part 210 and is disposed such that a part of the operation rod 201 protruding from the connection part 210 is positioned inside, An inlet 111 and an outlet 112 for fluid flow are provided. The body 110 has a first seat 113 and a second seat 114 capable of fixing the upper and lower portions of the cage 130 in the form of a granular object, Portion is disposed to protrude inward of the cage 130 and contacts the buffer portion 121 of the disk 120, which will be described later. A detailed description thereof will be given in the description of the buffering section 121. Since the cage 130 is fixed to the body 110 by the first and second sheets 113 and 114, the cage 130 can be easily assembled and disassembled and the cage 130 can be easily replaced. The same is true for the second embodiment.

The body 110 is manufactured by cutting, bending and joining at least one sheet metal material. The main body 115 and the sub-body 116, which are components of the body 110, will be described with reference to the above-described manufacturing process. 2, the main body 115 is a portion provided with an inlet 111 and an outlet 112, and the sub-body 116 refers to a portion mounted on an inlet 111 and an outlet 112. As shown in FIG. At this time, welding is used as a bonding method.

The main body 115 is manufactured by drilling an inlet port 111 and an outlet port 112 into an iron plate having a predetermined size and then rolling it into a cylindrical shape so that both end portions are rolled up and bonded.

The sub-body 116 is made by cutting an iron plate material, rolling it, and joining both ends. The sub-body 116 thus joined is a shape whose diameter gradually decreases from one end to the other end. And one end of the sub body 116 is joined to the inlet 111 and the outlet 112 of the main body 115.

Like the main body 115 and the sub body 116, the body 110 is manufactured by cutting and cutting other parts of the iron plate material.

The cage 130 is disposed in the interior of the body 110 to flow into the outlet 112 after the fluid supplied from the inlet 111 flows into the interior of the body 110, The cage 130 is integrally formed and has a hollow columnar shape with substantially open sides and the stem 140 of the connection portion 210 is inserted through the opened upper surface of the cage 130, And a plurality of flow holes 131 formed in the side portion of the inlet port 111 to allow the fluid of the inlet port 111 to flow therein. Thus, the fluid in the inlet 111 flows through the flow hole 131 to the outlet 112 through the open bottom.

 3, the inner surface of the lower portion where the flow holes 131 are formed is formed so as to be inserted more than the inner surface of the upper portion, and in other words, the inner diameter of the lower portion is slightly larger than the inner diameter of the upper portion. Thereby minimizing the friction coefficient between the disk 120 and the cage 130. [

Here, the flow hole 131 may be formed in various shapes, for example, the side shape may be substantially rectangular as shown in FIG. 4A, or may be substantially circular as shown in FIG. 4B. Further, as shown in FIG. 4C, the side surface of one flow hole 131 may have a substantially funnel shape, or may have a substantially bowl shape as shown in FIG. 4D, or may have various other shapes. These various shapes are designed to control the amount of the fluid flowing through the open flow hole 131 to be finely small or large when the disk 120 moves to the same position and blocks the flow hole 131.

The disc 120 is housed in the cage 130 as shown in FIGS. 2 and 3 and includes an upper portion 122, a lower portion 122, and a lower portion 122 that are adjacent to the inner surface of the cage 130 and maintain airtightness through the airtight member 150 Quot; U "shape with an inwardly inclined slope 123 and a flat bottom 124 connected to the slope 123 with a smaller diameter than the stem 140 are fastened to the lower portion 124.

Here, as the disc 120 moves, the upper portion 122 comes into contact with the first sheet 113 of the body 110 and the inner surface of the cage 130, and at this time, the outer surface of the upper portion 122, Ring and the U-ring are arranged in the height direction on the outer surface of the upper portion 122 so as to maintain the airtightness between the inner surface of the cage 130 and the inner surface of the cage 130. [ Accordingly, when the disc 120 is moved by the stem 140, the inner surfaces of the body 110 and the cage 130 are kept air-tight with the outer surface of the disc 120 by the hermetic member 150.

A balance hole 125 is formed in the lower portion 124 of the disk 120 so as to communicate with the outside and the inside of the disk 120. The balance hole 125 may be a single hole having a circular planar shape, . This allows a portion of the fluid to flow into the interior of the disk 120 through the balance holes 125 when the disk 120 moves strongly while the fluid introduced into the cage 130 flows into the discharge port 112, So as to minimize the pressure rise or drop of the fluid due to the strong movement of the disk 120. Here, the disk 120 may have a deformed shape and may have a plate shape having a predetermined thickness. In this case, the balance hole 125 may be penetrated through the thickness. At this time, the lower portion 124 and the stem 140 are mounted using a double release preventing nut.

3, grooves are formed in the inclined portions 123 on the upper side 122 of the disk 120, and stellite, which has a high abrasion resistance and high temperature hardness, is welded to the grooves as a buffer member And has a buffer part 121 formed concavely. Of course, besides stellite, a material which is resistant to abrasion and has a high hardness against high temperature may be welded.

In addition, a second seat 114 is mounted to secure the lower portion 124 of the cage 130 in the standing state to the body 110, and the upper inner side portion of the second seat 114 is connected to the cage 130 The protruding portion of the second sheet 114 formed by this arrangement comes into contact with the buffer portion 121 when the disc 120 moves in one direction. Therefore, when the disc 120 moves to close all the flow holes 131, the contact between the cushioning portion 121 of the disc 120 and the protruding portion of the second sheet 114 causes excessive movement of the disc 120 Is limited. The edge of the protruding portion of the second sheet 114 contacting the buffer portion 121 is bent so as to alleviate the contact impact with the buffer portion 121. [

<Operation>

In the automatic mode, when the motor actuator 200 operates and the actuating rod 201 moves, the stem 140 moves, and the stem 120 moves by the stem 140.

Through this operation, the disc 120 partially or fully closes or closes the flow hole 131 of the cage 130 to regulate the amount of fluid passing through the flow hole 131 at the inlet port 111.

At this time, when the disk 120 moves to the bottom dead center, the buffer part 121 of the disk 120 comes into contact with the protruding part of the second sheet 114 to restrict further movement.

It should also be appreciated that as the fluid moves through the flow hole 131 to the outlet 112 and the disk 120 moves to increase the pressure on the fluid to an unacceptable level, Some of the fluid may flow into the interior of the disk 120, thereby minimizing sudden pressure rise or drop of the fluid.

Also, even if the disk 120 moves the same distance depending on the size and shape of the flow hole 131, the flow amount of the fluid flowing through the flow hole 131 can be finely adjusted.

On the other hand, when it is required to adjust the flow rate in an emergency or artificially, the switching lever 202 is operated to switch the automatic mode to the manual mode.

Then, the first handle 203 is rotated clockwise or counterclockwise to induce movement of the actuating rod 201. This causes the stem 140 and the disc 120 to move as well, do.

&Lt; Embodiment 2 >

5 is an enlarged view of a side view of the diaphragm portion shown in Fig. 5, Fig. 7 is a side view of the actuator and the gear portion shown in Fig. 5 Fig. 8 is an enlarged view showing a side cross-section of the valve body portion shown in Fig. 5. Fig.

The second embodiment according to the present invention is different from the first embodiment in that the actuator 200 is replaced by a diaphragm part 300 and replaced with a gear part 400 instead of the connecting part 210, 100), there are some structural changes. Therefore, the same reference numerals are given to the same constituent elements having the same function as those of the first embodiment, and the detailed description thereof will be replaced with the above description, and briefly referred to as necessary.

The control valve having the fluid control balance hole according to the second embodiment of the present invention includes a diaphragm part 300, a gear part 400 and a valve body part 100 as shown in FIG.

The diaphragm unit 300 includes a volume booster 320 connected to the temperature controller 12 in FIG. 1, a valve positioner 330 connected to the volume booster 320, A diaphragm cover 340 installed to allow air to flow in from the volume booster 320; a diaphragm 350 installed in the diaphragm cover 340 to be reciprocated by the air supplied from the volume booster 320; An elastic member 360 incorporated in the diaphragm cover 340 for returning to the position, and a push rod 310 mounted on the diaphragm 350 at one end thereof. Here, the diaphragm cover 340 is formed by mutually coupling the upper and lower diaphragm covers.

The volume booster 320 uses a normal product for maintaining the inflow and discharge pressures at a constant proportion.

The valve positioner 330 is connected to the volume booster 320 and uses a normal product to increase or decrease the amount of air supplied to the diaphragm 350 in order to minimize hysteresis occurring during use of the diaphragm 350.

The diaphragm cover 340 has a built-in diaphragm 350 and an elastic member 360 therein and a portion of the push rod 310 coupled with the diaphragm 350 is positioned inside. The diaphragm cover 340 is connected to the volume booster 320 and the air supplied from the volume booster 320 is transmitted to the diaphragm 350.

The diaphragm 350 is installed in the diaphragm cover 340 so as to be coupled to the one end side portion of the push rod 310 and to move in one direction by the air supplied from the volume booster 320.

The elastic member 360 is disposed in association with the diaphragm 350 and is installed to generate a restoring force for returning the diaphragm 350 to the original position when the diaphragm 350 moves in one direction by the air pressure in one direction. Here, the elastic member 360 is preferably a spring.

The push rod 310 is installed at one end of the diaphragm 350 and moves together with the diaphragm 350. The other end of the push rod 310 passes through the gear case 410 and is inserted into the second body 460 (140). &Lt; / RTI &gt; It is a matter of course that the push rod 310 disposed between the diaphragm part 300 and the gear part 400 is held by the airtight member between the diaphragm part 300 and the gear part 400 by a separate airtight member.

The gear portion 400 includes a gear case 410 coupled to the diaphragm cover 340 and a gear installed in the gear case 410 so as to surround the push rod 310 passing through the gear case 410 A second handle 450 installed to operate the worm wheel 440 and the worm 430 installed to operate in conjunction with the gear 420, the gear case 410 and the valve body 100, And a second body 460 interposed and fastened to the second body 460.

The gear case 410 is mounted on the diaphragm cover 340 and the push rod 310 penetrates and the gear 420 is installed so that the worm 430 and the worm wheel 440 and the second handle 450 are connected do.

The gear 420 is fixed to the gear case 410 while enclosing the push rod 310. The gear 420 may move with the movement of the push rod 310 or may move the push rod 310 while moving by the action of the worm 430 and the worm wheel 440.

The worm wheel 440 is installed in association with the gear 420, and the worm 430 is installed in connection with the worm wheel 440. Therefore, the operation of the worm 430 and the worm wheel 440 can lead to the movement of the gear 420.

The second handle 450 is installed to operate the worm 430 and rotates clockwise or counterclockwise to operate the worm 430 and the worm wheel 440 to induce movement of the gear 420 do.

The second body 460 is mounted on the gear case 410 and a part of the other end side of the push rod 310 penetrating the gear case 410 is fastened to the one end side portion of the stem 140. The second body 460 supports a precise movement of the stem 140 and connects the gear case 410 to the valve body 100.

An indicator or a ruler is built in the second body 460 and a door or a transparent slot for visually confirming the indicator or the ruler is provided on the second body 460, It is possible to confirm the opening and closing degree of the flow hole 131 by checking the position.

Next, since the valve body portion 100 is substantially similar to that of the first embodiment, the detailed description will be replaced with the above description, and only the necessary portions and modified structural description will be mentioned.

The valve body 100 includes a body 110 installed on a flow path of a fluid and having an inlet 111 and an outlet 112. The valve body 100 is installed in the body 110 so that the fluid of the inlet 111 passes through the inside of the body 110 A disk 120 coupled to the other side of the stem 140, a disk 120, a cage 130 or a body 110 (not shown) installed in the cage 130, And a hermetic member 150 mounted on the outer surface of the disc 120 to maintain airtightness between the disc 120 and the disc 120. [ Here, since the body 110, the disk 120, the cage 130, and the hermetic member 150 are similar to those of the first embodiment, the common parts will be briefly described, and the differences will be described in detail.

The body 110 includes a first seat 113 and a second seat 114 capable of fixing the inlet 111 and the outlet 112 and the upper and lower portions of the granular cage 130 respectively. Here, the upper inner surface side portion of the second sheet 114 is arranged so as to protrude to the inside of the cage 130, and the projecting portion of the second sheet 114 by this arrangement is provided with the projections 126 of the disk 120 Lt; / RTI &gt; A detailed description thereof will be given in the description of the protrusion 126.

The upper cage 132 and the lower cage 133 are coupled to each other and the cage 130 is formed into a hollow column with both open sides and a plurality of flow holes 131 are formed in the lower cage 133. The upper portion of the upper cage 132 is fixed by the first seat 113 and the lower portion of the lower cage 133 is fixed by the second seat 114. [ At this time, the shape and size of the flow hole 131 can be modified in the same manner as in the first embodiment.

As shown in FIG. 8, the upper cage 132 and the lower cage 133 are arranged such that an inner side portion of the upper cage 132 protrudes inward with respect to the lower cage 133 And this arrangement is for restricting upward movement of the projection 126 of the disk 120, which will be described later. 8, the thickness of the upper cage 132 may be thicker than that of the lower cage 133. As shown in FIG.

8, the inner side portion of the second sheet 114 protrudes inward with respect to the lower cage 133 as viewed in side cross-sectional view, And this arrangement can limit the downward movement of the protrusion 126 of the disk 120 to be described below and minimize the friction coefficient between the disk 120 and the cage 130, Thereby preventing the disc 120 and the cage 130 from being disengaged.

The disc 120 includes an upper portion 122 adjacent to the inner surface of the cage 130 to maintain airtightness through the hermetic member 150, an inclined portion 123 inclined inward with a smaller diameter than the upper portion 122, Quot; U "shape with a flat bottom 124 connected to the ramp 123. The " U &quot; The lower portion 124 of the disc 120 is coupled with the stem 140 passing through the second body 460 of the gear portion 400 through the opened upper surface of the cage 130, . At this time, the lower portion 124 and the stem 140 are mounted using a double release preventing nut. In addition, the deformed shape of the disk 120 may be a plate having a certain thickness, and in this case, the balance hole 125 may be penetrated through the thickness.

In addition, outwardly protruding protrusions 126 are formed on the outer surface of the upper portion 122 adjacent to the inclined portion 123 in the disc 120. [ Of course, it is a matter of course that the stem 140 disposed over the gear portion 400 and the valve body portion 100 is held by the airtightness between the gear portion 400 and the valve body portion 100 by a separate airtight member.

Here, the protrusions 126 may be formed in the shape of a circle on the periphery of the disk 120, or may be formed at a plurality of intervals. When the disc 120 is moved so as to completely open or close the flow hole 131, the protrusion 126 causes the joint between the upper cage 132 and the lower cage 133, the joint between the lower cage 133 and the second sheet 133, And the protruded portion formed at the coupling portion of the disk 114 is restricted, and the excessive movement of the disk 120 is restricted due to the contact. The position of the protrusion 126 during the movement of the disc 120 is determined by the degree of opening and closing of the flow hole 131 It is decided. The joint portions of the upper cage 132 and the lower cage 133 and the joint portions of the lower cage 133 and the projections 126 that contact the second sheet 114 are formed in the second sheet The buffer part 121 of FIG. 3 may or may not be formed on a part of the upper side or the opposite side of the upper side or both sides of the upper side or the lower side. A hermetic member 150 for holding the airtightness between the first sheet 113 and the upper cage 132 is mounted on the outer surface of the upper portion 122 of the disc 120. This hermetic member 150 is disposed in the height direction of the upper portion 122, with a plurality of members including an O-ring and a U-ring.

<Operation>

When the air adjusted by the volume booster 320 flows into the diaphragm cover 340, the diaphragm 350 moves, and the push rod 310 to which the one end side portion is attached moves to the diaphragm 350. The push rod 310 The stem 140 to which the one end portion is attached moves and the disc 120 mounted to the other end portion of the stem 140 moves.

This operation allows the disk 120 and the protrusion 126 to partially or fully open or close the flow hole 131 of the cage 130 to control the amount of fluid passing through the flow hole 131 at the inlet port 111 do.

When the disk 120 moves to the top dead center, when the projection 126 of the disk 120 comes into contact with the protrusion of the upper cage 132 and moves to the bottom dead center, The projection 126 is brought into contact with the projection of the second sheet 114 to restrict further movement.

In addition, as the disk 120 moves while the fluid is moving, the sudden pressure rise or drop of the fluid flowing through the balance hole 125 of the disk 120 is minimized.

Meanwhile, when it is required to adjust the flow rate in an emergency or artificially, the second handle 450 is rotated clockwise or counterclockwise to operate the worm 430 and the worm wheel 440 and the gear, 310 and the stem 140 to ultimately move the disc 120.

As described above, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: valve body part 110: body
111: inlet 112: outlet
113: first sheet 114: second sheet
115: main body 116: sub-body
120: Disk 121: Buffer
122: upper part 123: inclined part
124: Lower part 125: Balance hole
126: projection 130: cage
131: flow hole 132: upper cage
133: Lower cage 140: Stem
150: sealing member 200: actuator
201: operating rod 202: switching lever
203: first handle 210:
211: first body 300: diaphragm part
310: push load 320: volume booster
330: valve positioner 340: diaphragm cover
350: Diaphragm 360: Elastic member
400: gear portion 410: gear case
420: gear 430: worm
440: worm wheel 450: second handle
460: Second body.

Claims (10)

A control valve installed on a flow path of a fluid to adjust a flow rate,
A body 110 having an inlet 111 and an outlet 112 for the inflow and outflow of the fluid,
A cage 130 formed in the body 110 and having a hollow pillar opened on both sides and having a flow hole 131 through which the fluid passes,
A valve body 100 including a disk 120 which is embedded in the cage 130 and which is opened and closed by the stem 140 coupled to the one end side portion while opening and closing the flow hole 131;
And driving means mounted on the body (110) while inducing movement of the stem (140)
The driving means includes:
A connection part 210 having a first body 211 mounted on the body 110 and having the other side of the stem 140 positioned therein,
And an operating rod 201 to which the other end of the stem 140 is coupled and which reciprocates the operating rod 201 to induce movement of the stem 140 and the disk 120. [ And a motor actuator (200) mounted on the control valve (211).
The method according to claim 1,
The motor actuator 200 includes a switching lever 202 installed to automatically or manually change the movement of the operating rod 201 and a first handle 203 installed to move the operating rod 201 in the manual mode, And a control hole for fluid control.
The method according to claim 1,
The disc 120 includes an upper portion 122 adjacent to the inner surface of the cage 130 to maintain airtightness through the hermetic member 150 and an inclined portion 123 having a smaller diameter than the upper portion 122 and inclined inward And a flat lower portion 124 connected to the inclined portion 123,
In order to restrict excessive movement when the disk 120 is moved to completely close the flow hole 131, the upper portion 122 side slope portion 123 is provided with a cushioning portion 121 A second sheet 114 protruding inwardly from the inner surface of the cage 130 while fixing a lower portion of the cage 130 to the body 110 so that the buffering portion 121 contacts the cushion 130, And a control valve for controlling the fluid flow.
The method according to claim 1,
The first body 211 is provided with an indicator or a ruler that indicates the position of the stem 140 and is further provided with a door or a transparent slot for visually checking the indicator or the ruler And a control hole for fluid control.
A control valve installed on a flow path of a fluid to adjust a flow rate,
A body 110 having an inlet 111 and an outlet 112 for the inflow and outflow of the fluid,
The upper cage 132 and the lower cage 133 are coupled to each other by a hollow pillar-shaped upper and lower cage 133 built in the body 110, A cage 130 in which a hole 131 is formed,
A valve body 100 including a disk 120 which is embedded in the cage 130 and which is opened and closed by the stem 140 coupled to the one end side portion while opening and closing the flow hole 131;
And driving means mounted on the body (110) while inducing movement of the stem (140)
The driving means includes:
A second body 460 mounted on the body 110 and passing through the other side of the stem 140 and a second body 460 mounted on the second body 460, A gear 420 fixed on a part of the push rod 310 coupled with the other end of the stem 140, a worm 430 and a worm wheel 440 installed to operate in cooperation with the gear 420, A gear portion 400 having a second handle 450 installed to operate the worm wheel 440,
A diaphragm cover 340 mounted on the gear case 410 and having a part of the push rod 310 positioned therein, and a diaphragm cover 340 installed in the diaphragm cover 340, And a diaphragm (300) having a diaphragm (350) installed to be moved by pneumatic pressure and an elastic member (360) installed to return the diaphragm (350) moved to the original position. And a control valve.
6. The method of claim 5,
The diaphragm unit 300 includes a volume booster 320 installed to supply air to the diaphragm 350, a volume booster 320 installed to supply air to the diaphragm 350 in preparation for hysteresis of the diaphragm 350, And a valve positioner (330) installed in association with the control valve.
6. The method of claim 5,
The disc 120 includes an upper portion 122 adjacent to the inner surface of the cage 130 to maintain airtightness through the hermetic member 150 and an inclined portion 123 having a smaller diameter than the upper portion 122 and inclined inward And a flat lower portion 124 connected to the inclined portion 123,
The protrusion 126 provided on the upper portion 122 is positioned further inside than the inner surface of the lower cage 133 in order to limit excessive movement when the disc 120 moves to completely close or open the flow hole 131. [ A second sheet 114 protruding from the upper cage 132 protruding from the lower cage 133 or protruding inward from the inner surface of the lower cage 133 while fixing the lower cage 133 to the body 110, Wherein the control valve is in contact with the projection of the fluid control valve.
6. The method of claim 5,
The second body 460 may further include an indicator or a scale for indicating the position of the stem 140 and a door or a transparent slot for visually checking the indicator or the ruler from outside. A control valve with a balance hole for fluid control.
8. The method according to claim 1 or 3 or 5 or 7,
So that a portion of the fluid flows through the disc 120 to reduce the rise or fall of the hydraulic pressure due to the movement of the disc 120 while the fluid flows through the flow hole 131 and into the outlet 112 Wherein a balance hole (125) is formed in the disk (120).
6. The method according to claim 1 or 5,
Wherein the flow hole (131) has at least one of a rectangular shape, a circular shape, a funnel shape, or a bowl shape.

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