KR20230126958A - Ball valve having key lock function for controlling flow - Google Patents

Abstract

The present invention is rotatably coupled to the valve tube body 110 in which the flow path 113 is formed, the ball valve rotating body 120 that opens and closes the flow path 113 by rotation, and the rotation guide plate 125 to rotate the ball valve. A handle 131 for rotating the ball 121 by rotation with the stem 123 as the center of the rotation axis of the stem 123, and a key groove 132 formed at a predetermined depth in the vertical direction from the upper surface of the handle 131, The opening/closing part 130 composed of a pinhole 133 penetrated between the rotation axis of the stem 123 and the keyway 132, the coil spring 141 inserted into the pinhole 133, and the front end of the coil spring 141 With the coupled pin 142, one side extends to the bottom of the keyway 132 and the other side extends to the bottom of the pinhole 133 and rotates at an angle between the keyway 132 and the pinhole 133. 143, the pin 142 is separated from the pin fastening groove 124 and rises by the upward and downward rotation of the plate 143 according to the insertion and withdrawal of the key 150 into the key groove 132. to rotate the handle 131, and insert the pin 142 into the pin fastening groove 124 to lower it to fix the rotation of the handle 131, including the key lock 140, the key 150 To easily fix the rotation of the handle 131 only by the insertion of. Disclosed is a ball valve having a keylock function for controlling flow.

Description

Ball valve with key lock function for flow control {BALL VALVE HAVING KEY LOCK FUNCTION FOR CONTROLLING FLOW}

The present invention relates to a ball valve having a key-lock function for controlling flow, which can implement a key-lock function to conveniently fix rotation of a handle only by inserting a key in a vertical direction.

As is well known, the ball valve has a ball-shaped valve with a hole in the opening and closing portion, and rotates the valve to close or open the hole to open and close the valve, which is a valve similar to a cock, and the ball valve has a valve disc It is a ball-shaped 90-degree rotary valve similar to a cock, and has very good airtightness characteristics. The seat surrounding the ball ensures airtightness and is easy to operate with relatively low torque. Since it has the same shape as that of , flow resistance is very low, so it is highly usable.

On the other hand, as a prior art related to this, Korean Patent Registration No. 10-1949928 is disclosed, and a ball valve having a key lock handle for flow control according to the prior art is an operating mechanism ( The rotation of the handle body 100 is controlled by separating or contacting the fixed tooth portion 420 of the disk 300 and the rotating tooth portion 310 of the disk 300 to control the flow rate by rotating the ball 630. .

However, when fastening the fixed teeth 420 and the rotary teeth 310. The ball 630 may rotate unintentionally due to the interlaced rotation of the saw teeth due to excessive water pressure, and the ball 630 may also rotate by forcible rotation of the handle body 100, so there is a limit to controlling the flow rate.

Accordingly, there is a need for a technology capable of implementing a key lock function that conveniently fixes the rotation of a handle only by inserting a key in a vertical direction.

Korean Patent Registration No. 10-1949928 (Ball valve with key lock handle for flow control, 2019.02.19)

A technical problem to be achieved by the spirit of the present invention is to provide a ball valve having a key lock function for flow control, which can implement a key lock function to easily fix the rotation of a handle only by inserting a key in a vertical direction.

In order to achieve the above object, an embodiment of the present invention, the inlet and the outlet are formed at both ends, respectively, the valve tube body is formed in the longitudinal direction in the center; A ball that opens and closes the flow path by rotation, a fastening groove formed indented at the upper end of the ball, a stem fastened to the fastening groove and the other side extending outside the valve body, and fixedly coupled to the upper surface of the valve body, and the upper surface Consisting of a rotation guide plate with a pin fastening groove formed therein, a ball valve rotating body; A handle rotatably coupled to the rotation guide plate to rotate the ball by rotation with the ball valve rotating body as a rotation axis of the stem, and a key groove formed at a predetermined depth in a vertical direction from an upper surface of the handle; an opening and closing portion composed of a pinhole formed through a shaft between the rotational axis of the stem and the keyway; And a coil spring inserted into the pinhole, a pin coupled to the front end of the coil spring, one side extending to the lowermost end of the keyway and the other side extending to the lowermost end of the pinhole, and forming a certain angle between the keyway and the pinhole. It is composed of a plate that rotates, and by the upward and downward rotation of the plate according to the insertion and withdrawal of the key into the keyway, the pin is separated from the pin fastening groove and raised to rotate the handle, Provides a ball valve having a key lock function for controlling flow, including a; key lock unit for fixing rotation of the handle by inserting the pin into the pin fastening groove and lowering the handle.

Here, a fixing groove is formed around the side of the key entering the key groove, and a ball plunger is formed on the side of the handle corresponding to the position of the fixing groove, so that the ball of the ball plunger rides in the fixing groove It is possible to fix the retracting state of the key by engaging sexually.

In addition, the bottom surface of the key groove may be inclined at an angle corresponding to the rotation angle of the plate, and the end of the key may protrude in a conical shape having an angle corresponding to the angle of inclination of the bottom surface of the key groove.

In addition, a coil spring may be interposed between the bottom surface of the keyway and the bottom surface of the plate.

In addition, a stopper groove for limiting the rotation angle of the handle is recessed in an arc shape on the upper surface of the rotation guide plate, and a stopper pin inserted into the stopper groove is formed on the lower surface of the handle corresponding to the position of the stopper groove It can be.

In addition, the pin is composed of an upper pin having a first diameter coupled to the coil spring and a lower pin having a second diameter smaller than the first diameter inserted into the pin fastening groove, and the front end of the plate is connected to the upper pin. It is formed to come into contact with the coupling surface of the lower pin, and may be formed to be split in a form surrounding both sides of the lower pin.

In addition, a rotation angle may be displayed on an upper surface of the rotation guide plate.

According to the present invention, it is possible to implement a key lock function that conveniently fixes the rotation of the handle only by inserting the key in the vertical direction, stably fixing the retracted state of the key by the ball plunger, and pinning the key by the coil spring when withdrawing the key. There is an effect of preventing forced rotation of the handle by an unintended external force by maintaining the fastened state of the.

1 is according to the prior art
Figure 2 illustrates a cross-sectional view of a ball valve having a keylock function for controlling flow according to an embodiment of the present invention.
Figure 3 illustrates a plan view of a ball valve having a key lock function for controlling the flow rate of Figure 2.
Figure 4 is a separate view of the handle and the key lock portion of the ball valve having a key lock function for controlling the flow rate of FIG.
Figure 5 is a separate view of the plate and the key of the ball valve having a key lock function for controlling the flow rate of Figure 2, respectively.

Hereinafter, embodiments of the present invention having the above-described characteristics will be described in more detail with reference to the accompanying drawings.

The ball valve having a keylock function for controlling flow according to an embodiment of the present invention has an inlet 111 and an outlet 112 formed at both ends, respectively, and a valve body 110 having a flow path 113 in the longitudinal direction in the center. , The ball 121 that opens and closes the passage 113 by rotation, the fastening groove 122 formed indented at the top of the ball 121, one side is fastened to the fastening groove 122 and the other side is the valve body 110 A ball valve rotating body 120 composed of an outwardly extending stem 123 and a rotation guide plate 125 fixedly coupled to the upper surface of the valve body 110 and having a pin fastening groove 124 formed on the upper surface, and a rotation guide A knob 131 coupled to the plate 125 so as to be rotatable and rotating the ball 121 by rotation about the rotational axis of the ball valve 120 as the center of the stem 123, and the upper surface of the knob 131 The opening/closing part 130 composed of a keyway 132 formed with a certain depth in the vertical direction from the stem 123 and a pinhole 133 formed through the keyway 132 between the rotating shaft of the stem 123 and a coil inserted into the pinhole 133 The spring 141 and the pin 142 coupled to the front end of the coil spring 141, one side extending to the lowermost end of the keyway 132 and the other side extending to the lowermost end of the pinhole 133, the keyway 132 It consists of a plate 143 that rotates at a certain angle between the pin hole 133 and the plate 143 moves up and down according to the insertion and withdrawal of the key 150 into the keyway 132. 142 is separated from the pin fastening groove 124 and raised to rotate the handle 131, and the pin 142 is inserted into the pin fastening groove 124 and lowered to fix the rotation of the handle 131 , Including the key lock 140, the gist is to simply fix the rotation of the handle 131 only by inserting the key 150.

Hereinafter, referring to FIGS. 2 to 5, the ball valve having the key lock function for controlling the flow rate of the above-described configuration is described in detail as follows.

First, an inlet 111 and an outlet 112 are formed at both ends of the valve body 110, and a flow path 113 is formed in the longitudinal direction at the center to allow fluid to flow.

Here, referring to FIG. 2, the inlet 111 and the outlet 112 may be coupled to each other by being watertight with a compression-fitting connection body 114 for connection with the valve.

Next, as shown enlarged in FIG. 2, the ball valve rotating body 120 includes a ball 121 that opens and closes the passage 113 by rotation, and a fastening groove 122 recessed at the top of the ball 121. And, one side is fastened and fixed to the fastening groove 122, and the other side is bolted to the upper surface of the valve body 110 with the stem 123 extending vertically outside the valve body 110, and is fixedly coupled to the upper surface It is composed of a rotation guide plate 125 having a pin fastening groove 124, and rotates the ball 121 at a certain angle according to whether the key 150 is fastened to the pin fastening groove 124 to open the passage 113. make it open.

Here, the other side of the stem 123 is fixed to the stem nut 126 (see FIG. 4(b)) inserted and fixed to the lower surface of the handle 131, and the ball 121 is rotated by the rotation of the handle 131. can make it happen

Next, referring to FIGS. 2 and 6 , the opening/closing unit 130 is rotatably coupled to the rotating guide plate 125 by rotating the ball valve rotating body 120 as the center of the rotating shaft of the stem 123. A handle 131 for rotating the ball 121, a keyway 132 formed at a certain depth in the vertical direction from the upper surface of the handle 131 and into which the key 150 is inserted, and a rotation shaft and a keyway of the stem 123 ( 132, the pin 142 is composed of a pinhole 133 through which the pin 142 elastically moves up and down, so that the ball valve rotating body 120 can be rotated at a certain angle by the rotation of the handle 131.

On the other hand, a tubular fixing groove 151 is formed around the side of the key 150 entering the key groove 132, and a ball plunger is formed on the side of the handle 131 corresponding to the position of the fixing groove 151 ( 134) is formed, and the ball of the ball plunger 134 is elastically engaged with the fixing groove 151 to fix the retracted state of the key 150 in the key groove 132, thereby raising the pin 142 to raise the handle ( 131 can be rotated freely, and the key 150 can be inserted into the key groove 132 regardless of the insertion direction.

Next, referring to FIGS. 4(b) and 5(b) , the keylock unit 140 is inserted into the pinhole 133 and fixed to the coil spring 141 and the front end of the coil spring 141. With the coupled pin 142, one side extends to the bottom of the keyway 132 and the other side extends to the bottom of the pinhole 133 and rotates at an angle between the keyway 132 and the pinhole 133. It consists of (143).

Accordingly, by the upward and downward rotation of the plate 143 such as a seesaw or lever according to the insertion and withdrawal of the key 150 into the key groove 132, the pin 142 is separated from the pin fastening groove 124 and rises. to rotate the handle 131 from the rotation guide plate 125, and insert the pin 142 into the pin fastening groove 124 by the elastic force of the coil spring 141 and lower it from the rotation guide plate 125 By fixing the rotation of the knob 131, it is possible to implement a key lock function.

In this way, in a state where the key 150 is not retracted, the rotation of the handle 131 can be stably fixed by elastically inserting the pin 142 into the pin fastening groove 124 by the coil spring 141. there is.

In addition, referring to (a) and (b) of FIG. 4 , the lowermost end surface 132a of the key groove 132 is inclined at an angle corresponding to the rotation angle of the plate 143, so that excessive insertion of the key 150 or The rotation of the plate 143 is limited, and the end of the key 150 protrudes in a conical shape having an angle corresponding to the inclination angle of the lowermost end surface 132a of the key groove 132, so that the key 150 is formed by the plate 143 ) to maintain durability of the plate 143 even when the key 150 is frequently used.

In addition, although not shown separately, a coil spring is interposed between the lowermost end surface 132a of the keyway 132 and the bottom surface of the plate 143, so that when the key 150 is withdrawn from the keyway 132, the plate 143 ) can be easily returned to the horizontal state, and the elastic force of the coil spring 141 can be reinforced.

In addition, referring to FIG. 4 (b), on the upper surface of the rotation guide plate 125, a stopper groove 127 for limiting the rotation angle of the handle 131 extends in an arc shape of a certain angle and is formed indented, and the stopper A stopper pin 144 inserted into the stopper groove 127 is formed on the lower surface of the handle 131 corresponding to the position of the groove 127, so that the rotation angle of the handle 131 can be limited.

On the other hand, although not shown, a ball plunger is formed at the tip of the stopper pin 144, and ball-shaped irregularities are continuously formed on the bottom surface of the stopper groove 127, so that the handle 131 is discretely You can also make it rotate.

In addition, as shown in (b) of FIG. 4, the pin 142 has a first diameter upper pin 142a coupled to the coil spring 141 and a first diameter inserted into the pin fastening groove 124. It consists of a lower pin 142b of a smaller second diameter, and the front end of the plate 143 is formed so as to come into contact with the coupling surface of the upper pin 142a and the lower pin 142b, as shown in (a) of FIG. As described above, the front end of the plate 143 may be divided and formed in a form surrounding both side surfaces of the lower pin 142b.

In addition, a rotation angle, that is, a grid is displayed on the upper surface of the rotation guide plate 125, so that the degree of rotation of the ball valve rotator 120 by rotation of the knob 131 can be accurately identified.

Therefore, by the configuration of the ball valve having the key-lock function for flow control as described above, it is possible to implement the key-lock function that conveniently fixes the rotation of the knob only by inserting the key in the vertical direction, and the retracting state of the key is controlled by the ball plunger. It is stably fixed, and when the key is withdrawn, it is possible to prevent forced rotation of the handle due to unintended external force by maintaining the locked state of the pin by the coil spring.

The embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents that can replace them at the time of this application. It should be understood that there may be waters and variations.

110: valve tube 111: inlet
112: outlet 113: flow path
114: connecting body 120: ball valve rotating body
121: ball 122: fastening groove
123: stem 124: pin fastening groove
125: rotation guide plate 126: stem nut
127: stopper home 130: opening and closing part
131: handle 132: keyway
133: pin hole 134: ball plunger
140: keylock part 141: coil spring
142: pin 143: plate
144: stopper pin 150: key
151: fixed groove

Claims (7)

A valve body having an inlet and an outlet at both ends and a flow path formed in the longitudinal direction at the center;
A ball that opens and closes the flow path by rotation, a fastening groove formed indented at the upper end of the ball, a stem fastened to the fastening groove and the other side extending outside the valve body, and fixedly coupled to the upper surface of the valve body, and the upper surface Consisting of a rotation guide plate with a pin fastening groove formed thereon, a ball valve rotating body;
A handle rotatably coupled to the rotation guide plate to rotate the ball by rotation with the ball valve rotating body as a rotation axis of the stem, and a key groove formed at a predetermined depth in a vertical direction from an upper surface of the handle; an opening and closing portion composed of a pinhole formed through a shaft between the rotational axis of the stem and the keyway; and
A coil spring inserted into the pinhole, a pin coupled to the front end of the coil spring, one side extending to the lowermost end of the keyway and the other side extending to the lowermost end of the pinhole at a predetermined angle between the keyway and the pinhole It is composed of a plate that rotates, and by the upward and downward rotation of the plate according to the insertion and withdrawal of the key into the keyway, the pin is separated from the pin fastening groove and raised to rotate the handle, Including,
Ball valve with key lock function for flow control.
According to claim 1,
A fixing groove is formed around the side of the key entering the key groove, and a ball plunger is formed on the side of the handle corresponding to the position of the fixing groove, so that the ball of the ball plunger is elastically placed in the fixing groove Characterized in that it engages to fix the retracting state of the key,
Ball valve with key lock function for flow control.
According to claim 1,
Characterized in that the lowermost surface of the keyway is inclined at an angle corresponding to the rotational angle of the plate, and the end of the key protrudes in a conical shape having an angle corresponding to the inclination angle of the lowermost surface of the keyway,
Ball valve with key lock function for flow control.
According to claim 4,
Characterized in that a coil spring is interposed between the bottom surface of the keyway and the bottom surface of the plate.
Ball valve with key lock function for flow control.
According to claim 1,
A stopper groove for limiting the rotation angle of the handle is recessed in an arc shape on the upper surface of the rotation guide plate, and a stopper pin inserted into the stopper groove is formed on the lower surface of the handle corresponding to the position of the stopper groove. characterized by,
Ball valve with key lock function for flow control.
According to claim 1,
The pin is composed of an upper pin of a first diameter coupled to the coil spring and a lower pin of a second diameter smaller than the first diameter inserted into the pin fastening groove,
Characterized in that the front end of the plate is formed so as to come into contact with the coupling surface of the upper pin and the lower pin, and is divided in a form surrounding both sides of the lower pin.
Ball valve with key lock function for flow control.
According to claim 1,
Characterized in that the rotation angle is displayed on the upper surface of the rotation guide plate,
Ball valve with key lock function for flow control.