KR101837499B1 - Swing shutoff valve - Google Patents

Abstract

The present invention relates to a swing cut-off valve which can be forcibly opened and closed. According to the present invention, linear movement of a stem of a driving unit and swing (rotation) movement of a disc of an operation unit can be connectively driven using an effective method in order to provide a new concept of the swing cut-off valve for artificially opening and closing a valve through a disc swing method. Moreover, an insertion hole of the swing disc, whose size is comparable to a size of a pipe, can be directly inserted into the pipe so as to close the pipe, thereby maintaining security of the valve even when any sheet is specially applied. When completely closing the valve, fluid pressure applied to the inside of the pipe enables a rear surface of the swing disc to come closely in contact with a body, thereby improving security efficiency of the valve. In addition, an operation displacement of the stem for completely opening and closing the valve can be decreased comparing to a conventional gate valve, so the full length of the valve can be shorten.

Description

Swing shut-off valve {omitted}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing shut-off valve capable of artificially opening and closing by combining characteristics of a swing check valve and a gate valve which have been commercialized in the past.

A swing check valve is a swing disc that can effectively prevent reverse flow in a pipeline by automatically closing the valve by the pressure of the fluid flowing backwards. However, without a separate auxiliary device, it is not possible to open or close the pipeline to be.

The gate valve is a valve that opens and closes a valve by connecting the gate to the upper drive part and directly lifts up the gate so that the structure is simple and the pressure loss is low. However, due to the long displacement, And the opening and closing time becomes long.

Japanese Patent Application Laid-Open No. 10-2013-0069947 (2013.06.27)

Problems to be solved by the present invention are as follows.

That is, the basic shape of the body and the disk is designed based on the structure of the swing check valve, and the disk is tightly attached to the body by using the fluid pressure in the channel in closing, thereby improving the airtightness efficiency of the valve.

Further, the driving part of the gate valve is connected to the body and the disk of the swing check valve structure so that the valve can be opened and closed artificially.

In order to solve the above problems,

An operation part 200 disposed on the pipeline to open and close the pipeline; And a driving part 100 for controlling the opening and closing of the operating part 200. The operating part 200 is installed on the conduit and has a body which is supplied with the fluid into the inlet part 240b and discharged to the outlet part 240a, And a swinging disk 220 formed on the discharge part 240a of the body and having an upper end hinged to the body 240 and a surface facing the inflow part 240b coupled to the driving part 100, The swing disk 220 is swung downward by the swing arm 100 to close the channel or swing up to open the channel,

The body 240 includes a depression 240c formed by depressing a portion to which the swing disk 220 is coupled at a point where the discharge portion 240a starts from a direction in which the fluid flows, And a disk contact portion 242 that is formed by being vertically recessed in a discharge starting diameter 240al and a discharge starting diameter 240al which is a boundary between the discharge portion starting diameter 240a and the depression portion 240c, And a protruding hemispherical insertion port 222 having a minor diameter 24al and an insertion port diameter R222,

The driving unit 100 includes a lifting unit 110 for controlling the operating unit 200 by lifting and lowering the lifting unit 110 and a lifting unit 110 for lifting and lowering the lifting unit 110 while coupling the operating unit 200 and the driving unit 100, And a supporting part 120. The elevating part 110 includes a stem 113 for moving up and down, a handle 111 for generating a rotating force, a rotating part of the handle 111, A stem 113a is formed on the outer circumferential surface of one side of the stem 113 and a thread groove 112a corresponding to the stem 113 is formed on the inner circumferential surface of the stem nut 112, The stem 113 is moved up and down to control the operation unit 200,

The swing disk 220 includes a stem coupling part 224 formed on a surface of the swing disk 220 on which the driving part 100 is coupled and coupling the stem 113 to the swing disk 220, The stem coupling portion 224 of the swinging disk 220 and the disk coupling portion 113b of the stem 113 are coupled to each other by including the disk coupling portion 113b coupled to the stem coupling portion 224 of the disk 220, And the lifting and lowering motion of the stem 113 is converted into swing motion of the swing disk 220.

The present invention has the following effects.

In other words, a new concept swing shut-off valve capable of artificially opening and closing a valve by a disc swing method is realized by connecting the linear motion of the drive stem and the swing (rotation) motion of the actuating disc in an effective manner.

In addition, since the insertion port of the swing disk which coincides with the size of the channel is directly inserted into the channel and the channel is closed, the valve can be kept airtight even when the seat is not particularly applied.

Further, when the valve is completely closed, the pressure of the fluid acting in the channel exerts an effect of bringing the back surface of the swing disk closer to the body, thereby further increasing the airtightness efficiency of the valve.

Compared to conventional gate valves, the operating displacement of the stem for fully opening and closing the valve is reduced, which can reduce the total length of the valve.

1 is a perspective view of the entire configuration;
2 is an exploded view of Fig.
3 is a perspective view showing a configuration of an operating portion;
4 is a perspective view showing the structural characteristics of the operating portion;
5 is a perspective view and a half sectional view showing the engaging characteristics of the driving part and the operating part;
6 is a perspective view showing a configuration of a driving unit;
7 is a perspective view showing an opening process.
8 is a half sectional view showing an open state.
9 is a perspective view showing a closing process;
10 is a half sectional view showing a closing mechanism;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the scope of the present invention should be understood from the description of the claims. Further, the description of known technology which obscures the gist of the present invention is omitted.

It should be noted that the directions of "phase" and "bottom" in the description of the present invention are merely directed to the shape of FIG. 1 for the sake of understanding, and directions of the baseline (or drawing)

The present invention is summarized as follows.

An operation part 200 disposed on the pipeline and opening and closing the pipeline; And a driving part 100 for controlling the opening and closing of the operating part 200. The operating part 200 is installed on the conduit and has a body which is supplied with the fluid into the inlet part 240b and discharged to the outlet part 240a, And a swinging disk 220 formed on the discharge part 240a of the body and having an upper end hinged to the body 240 and a surface facing the inflow part 240b coupled to the driving part 100, The swing disk 220 is swung downward by the swing arm 100 to close the channel or swing up to open the channel,

The body 240 includes a depression 240c formed by depressing a portion to which the swing disk 220 is coupled at a point where the discharge portion 240a starts from a direction in which the fluid flows, And a disk contact portion 242 that is formed by being vertically recessed in a discharge starting diameter 240al and a discharge starting diameter 240al which is a boundary between the discharge portion starting diameter 240a and the depression portion 240c, And a protruding hemispherical insertion port 222 having a minor diameter 24al and an insertion port diameter R222,

The driving unit 100 includes a lifting unit 110 for controlling the operating unit 200 by lifting and lowering the lifting unit 110 and a lifting unit 110 for lifting and lowering the lifting unit 110 while coupling the operating unit 200 and the driving unit 100, And a supporting part 120. The elevating part 110 includes a stem 113 for moving up and down, a handle 111 for generating a rotating force, a rotating part of the handle 111, A stem 113a is formed on the outer circumferential surface of one side of the stem 113 and a thread groove 112a corresponding to the stem 113 is formed on the inner circumferential surface of the stem nut 112, The stem 113 is moved up and down to control the operation unit 200,

The swing disk 220 includes a stem coupling part 224 formed on a surface of the swing disk 220 on which the driving part 100 is coupled and coupling the stem 113 to the swing disk 220, The stem coupling portion 224 of the swinging disk 220 and the disk coupling portion 113b of the stem 113 are slidably engaged with the disk coupling portion 224 of the disk 220, And the lifting movement of the stem (113) is converted into a swing motion of the swing disk (220).

The swing shutoff valve of the present invention comprises a driving unit 100 and an operating unit 200 as shown in FIG.

The driving unit 100 is installed at the upper end of the actuating unit 200 to generate motion of the actuating unit 200. The actuating unit 200 is disposed on the conduit and receives power from the driving unit 100 to close Open.

3, the operation unit 200 includes a swing disk 220, a disk pin 230, and a body 240.

The body 240 is installed on the pipe, and the fluid in the flow direction flows into the inlet 240b and is discharged to the outlet 240a.

The disk pin 230 serves to couple the swing disk 220 to the body 240.

The swing disk 220 is formed at the discharge portion 240a of the body 240 and the upper end is hinged by the body 240 and the disk pin 230 so as to swing downward to close or swing up the channel, And to open up.

4A, the swing disk 220 includes a body coupling protrusion 221 hinged to a disk coupling part 241 of the body 240 by a disk pin 230, The swinging disk 220 is formed with a protrusion hemispherical insertion port 222 having an insertion port diameter R222 which is smaller than the entire disk diameter R220 of the swing disk 220. The insertion port 222 is formed by And is directly inserted into the duct of the discharge part 240a at the time of closing.

The other part of the swinging disk 220 except for the insertion port 222 is a body contacting portion 223 and contacts the disk contacting portion 242 formed at the inlet of the discharge port 240a of the body 240 when the swinging disk 220 is closed, Blocking and keeping secrets.

The lower end portion of the rear surface of the swinging disk 220 which contacts the fluid flowing in the swinging disk 220 becomes the stopping jaw contact portion 225 and the portion protruding from the upper end of the inflow portion 240b of the body 240 becomes the disk stopping jaw 243 The swinging disk 220 contacts the disk stopping jaw 243 of the body 240 to stop the swinging disk 220 in its final position.

A depression 240c formed by depressing a portion where the swing disk 220 is engaged is formed at an entry point where the discharge portion 240a of the body 240 starts, as shown in FIG. 4 (b) The boundary between the inlet and the depressed portion 240c is the discharge start diameter 240al and the surface on the upper and lower extension lines becomes the disk abutting portion 242. [

When the swing disk 220 is fully closed, the insertion port diameter R222 of the swing disk 220 corresponds to the discharge port starting diameter R240al of the body 240, and the insertion port 222 is completely inserted into the pipeline of the valve The valve is closed so that sufficient airtightness can be maintained even when a separate sheet is not applied.

5 (a), the stem coupling portion 224 of the swinging disk 220 serves to couple the stem 113 to the swinging disk 220 at a rear surface contacting the fluid in the flow direction.

Preferably, the stem coupling portion 224 is formed as a semicircular left and right frame 224a vertically protruding left and right so as to form a middle flute in the rear surface of the swinging disk 220, and each of the left and right frames 224a A longitudinally long track-shaped guide groove 224b is formed so that the stem pin 114 extends across the guide groove 224b of the swinging disk 220 and the stem pin groove 113c of the stem 113, As shown in Fig.

At this time, the disk coupling portion 113b, which is flatly formed on both sides of the stem 113, is fastened in a state sandwiched between the left and right frames 224a of the swing disk 220, The rotational degrees of freedom are constrained, so that the elevating operation is performed through the screw movement with the stem nut 112.

 When the stem 113 moves up and down, the stem pin 114 coupled with the stem 113 slides and pulls the guide groove 224b of the swinging disk 220 in a straight line along the stem 113 Swinging the swing disk 220 in a manner that raises or lowers the swing disk 220.

When the guide groove 224b is longitudinally formed on the basis of a closed state in which the body contacting portion 223 of the swing disk 220 is in close contact with the disk contacting portion 242 of the body 240 as shown in Figure 5 (b) The guide groove height 224bl is formed so as to include all displacements in which the stem pin 114 slides while the stem 113 moves up and down and the guide groove width 224cl is formed so as to correspond to the diameter of the stem pin 114 do. This ensures that the stem pin 114 is vertically slidable above and below the guide groove 224b of the stem coupling portion 224 and the stem pin 114 is horizontally positioned on the side of the guide groove 224b So that the driving force of the stem 113 can be completely transmitted to the swing disk 220.

The rolling contact portion 113d of the stem 113 maintains rolling contact with the stem contacting portion 226 of the swing disk 220 while the stem 113 is lifted and swung the swing disk 220 as shown in FIG. And exercise. This is a method of directly transmitting the tightening pressure of the stem 113 to the swing disk 220 in a fully closed state of the valve.

As shown in FIG. 6, the driving unit 100 serves to open and close the operating unit 200 and to adjust the flow rate. The driving unit 100 is divided into an elevating unit 110 and a supporting unit 120.

The elevating unit 110 includes a handle 111, a stem nut 112, a stem 113, and a stem pin 114. The elevating unit 110 includes a handle 111, a stem nut 112, and a stem pin 114.

The handle 111 serves to generate a rotational force R. In the figure, a manual control system using a general handle is shown, but an automatic control system using an actuator such as an electric motor may be applied.

The stem nut 112 is a cylindrical member fixedly coupled to the handle 111 and rotated by receiving the rotational force R of the handle 111 and passing through the center of the stem 111. A screw groove 112a is formed on the inner circumferential surface of the stem nut 112, (113).

The stem 113 is an elongated cylindrical member which is engaged with the handle 111 at the upper portion and engages with the swing disc 220 at the upper portion. A thread 113a is formed on the upper half outer circumferential surface of the stem 113, (112).

A disk coupling part 113b is formed in the lower part of the stem 113 and inserted into the stem coupling part 224 of the swing disk 220 to be coupled by the stem pin 114 in a state in which rotation is restricted.

The stem 113 is coupled between the stem nut 122 and the swinging disk 220 to convert the rotational motion R of the handle 111 and the stem nut 122 into a linear up-and- 200).

On the other hand, when the stem 113 is engaged by the swing disk 220 and the stem pin 114, the stem 113 is designed to form an acute angle (?) With the horizontal center axis of the valve with respect to the stem pin 114 .

This is a structure that is more advantageous in the formation of a rotation locus for converting the linear up and down movement D of the stem 113 into the swing (rotation) motion of the swing disk 220, and at the same time, To the swing disk (220), thereby improving the closing efficiency and airtightness of the valve.

The supporting portion 120 is a portion that supports the actuating portion 200 and the driving portion 100 and supports the lifting and lowering of the lifting portion 110. The supporting portion 120 includes a cover 121, bearings 122 and 123, a housing 124, A gland 125, a packing 126, a bonnet 127, and a back sheet 128.

The cover 121 is bolted to the upper end of the housing 124 to restrain the stem nut 112.

The bearings 122 and 123 are formed between the stem nut 112 and the cover 121 and between the stem nut 112 and the housing 124 so that the stem nut 112 is separated from the cover 121 and the housing 124 As shown in Fig.

The housing 124 is coupled between the cover 121 and the bonnet 127 and houses the bearings 122 and 123 and the stem nut 112 together with the cover 121 coupled to the top, Thereby supporting the lifting and lowering movement of the elevating portion 110 together.

The gland 125 is positioned at the top of the packing 126 to support the packing 126 while supporting the stem 113.

The packing 126 is a sealing member formed on the outer periphery of the bonnet 127 and the stem 113 to maintain the airtightness between the bonnet 127 and the stem 113 by the pressure of the upper ground 125.

The bonnet 127 is coupled between the upper portion of the body 240 and the discharge portion 240a and the inlet portion 240b and receives the gland 125, the packing 126, the back sheet 128, 124 to support the lifting and lowering motion of the lifting and lowering unit 110.

The back sheet 128 is installed at the lower end of the bonnet 127 on the outer periphery of the stem 113 and is provided to supplement the sealing performance of the packing 126.

The opening and closing principle of the swing shutoff valve based on the above-described configuration will be described below.

As shown in FIG. 7, when the stem 113 is lifted to the maximum by the operation of the screw fastening portions 112a and 113a, the swing disc 220 is swung upward to completely open the channel.

7 (a): When the handle 111 starts to rotate in the direction of Ru, the stem 113 also starts to rise by the operation of the screw fastening portions 112a and 113a.

7 (b): When the handle 111 is continuously rotated in the Ru direction, the stem pin 114 coupled to the rising stem 113 slides in the SLu1 direction in the guide groove 224a, Swing (SWu) to open the valve.

7 (c): When the handle 111 is completely rotated in the Ru direction, the stem pin 114 slides in the SLu2 direction in the guide groove 224a to swing the swing disk 220 upward continuously, The stop jaw contact portion 225 of the valve body 220 is brought into contact with the disc stopping jaw 243 of the body 240 to maintain the fully opened state of the valve.

8, the detent jaw contact portion 225 of the swinging disc 220 is engaged with the disc stopping jaw 243 of the body 240 by the engaging pressure Pu acting on the threaded engaging portions 112a and 113a, And at this time, the conduit of the valve becomes a full bore state, so that the pressure loss is reduced.

As shown in FIG. 9, when the stem 113 is fully lowered by the operation of the screw fastening portions 112a and 113a, the swing disk 220 swings downward (SWd) to completely close the pipeline.

9 (a): When the handle 111 starts to rotate in the Rd direction, the stem 113 also starts to descend by the operation of the screw fastening portions 112a and 113a.

9 (b): When the handle 111 is continuously rotated in the Rd direction, the stem pin 114 coupled to the descending stem 113 slides in the SLd1 direction in the guide groove 224a, (SWd).

9 (c): When the handle 111 is completely rotated in the Rd direction, the stem pin 114 slides in the direction of SLd2 from the guide groove 224a to swing the swing disk 220 downward continuously, The body contacting portion 223 of the disk 220 is brought into contact with the disk contacting portion 242 of the body 240 to maintain the valve fully closed.

10, the engaging pressure Pd acting on the threaded engaging portions 112a and 113a is transmitted to the swing disc 220 through the stem pin 114 and the rolling contact portion 113d of the stem 113 As a result, the body contacting portion 223 of the swinging disk 220 maintains a state of being in close contact with the disk contacting portion 242 of the body 240, thereby maintaining the airtightness of the valve. In particular, the closing efficiency of the valve is improved by the insertion port 222 of the swing disk 220 formed to have the same size as the channel.

Further, the fluid pressure PF in the flow direction further functions to bring the swing disk 220 closer to the discharge portion 240a of the body 240, so that the airtightness in the valve can be more effectively maintained.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be clear to those who have knowledge.

100:
110:
111: Handle
112: stem nut
112a: screw groove
113: Stem
113a:
113b: Disk coupling portion
113c: Stem pin tightening groove
113d:
114: stem pin
120: Support
121: cover
122: Bearing 1
123: Bearing 2
124: Housing
125: Grand
126: Packing
127: Bonnet
128: back sheet
200:
220: Swing disk
221: Body coupling projection
222:
223: Body contact part
224:
224a: left and right frames
224b: guide groove
225: detent jaw contact
226: Stem contact
230: disk pin
240: Body
240a:
240b:
240c:
241: Disk coupling portion
242:
243: disk stop jaw

Claims (4)

An operation part 200 disposed on the pipeline to open and close the pipeline;
And a driving unit (100) for controlling the opening and closing of the operating unit (200)

The operation part 200
A body 240 installed on the pipeline and flowing into the inflow portion 240b and discharged to the discharge portion 240a,
And a swing disk 220 formed on a discharge part 240a of the body and having a top hinged to the body 240 and a surface facing the inflow part 240b coupled to the driving part 100,
The swinging disk 220 is swung downward by the driving unit 100 to close the channel or swing up to open the channel.

The driving unit 100
A lift part 110 for controlling the operation part 200 by lifting and lowering movement,
And a support part 120 for supporting the actuating part 200 and the driving part 100 while supporting the elevating part 110,

The elevating portion 110
A stem 113 which moves up and down,
A handle 111 for generating a rotational force,
And a stem nut (112) having a cylindrical shape and rotated by receiving the rotational force of the handle (111) and passing through the stem (113)

A thread 113a is formed on the outer circumferential surface of one side of the stem 113 and a thread groove 112a corresponding to the thread groove 112a is formed on the inner circumferential surface of the stem nut 112. The stem 113 receives the rotational force of the stem nut 112, And controls the actuating part (200)

The swing disk 220
And a stem coupling part (224) formed on a surface to which the driving part (100) is fastened and coupling the stem (113) to the swing disk (220)
The stem (113)
And a disk coupling portion 113b coupled to the stem coupling portion 224 of the swing disk 220 at the bottom,
The stem coupling portion 224 of the swinging disk 220 and the disk coupling portion 113b of the stem 113 are coupled to each other so that the up and down movement of the stem 113 is converted into the swinging motion of the swinging disk 220
Swing shutoff valve.
The method according to claim 1,
The body 240 is
A depression 240c formed by depressing a portion to which the swing disk 220 is coupled at a point where the discharge portion 240a starts with respect to a flow direction in which the fluid flows,
A discharge start diameter 240al which is a boundary between the discharge portion 240a and the depression 240c,
And a disc contact portion 242 which is a surface formed by being recessed up and down at a discharge start diameter 240al,

The swing disk 220
And a protruded hemispherical-shaped insertion port 222 having a diameter of the insertion opening 240a and a diameter of the insertion opening R222 corresponding to the diameter of the discharge opening 240a.
Swing shutoff valve.
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