KR200244636Y1 - valve actuating device - Google Patents

Abstract

The present invention relates to a valve opening and closing device for displaying the opening and closing state of the valve to the outside while opening and closing the valve, in particular, the valve operating portion 10 for opening and closing the valve connected to the various valves, and the valve Limit switch consisting of a display device 20 for displaying the opening and closing state of (1) to the outside, and a plurality of limit switches 26, 27, 28, 29 for selectively applying or cutting power to the display device 20. An assembly and a cam assembly (30) for individually operating the respective limit switches (26, 27, 28, 29) in a timely manner while rotating in conjunction with the valve operating portion (10), and the cam assembly (30). The cam member 33 having the cam protrusion 33a and the uneven portion 33b on the outer circumferential surface thereof and the cam fixing blocks 34 which press-fix the cam member 33 from above are alternated on the cam rotation shaft 31. The cam members 33 are disposed on the cam fixing blocks adjacent to the upper and lower sides. 34 are pressed and fixed by a force fastened to each other by a high information bolt 35.

Description

Valve actuating device

The present invention relates to a valve opening and closing device, and more particularly, to a display device that is connected to the various opening and closing valves to open and close the valve, in conjunction with the display device to indicate the open and close state of the valve.

In general, an on-off valve installed on a pipeline for guiding fluid supply and opening / closing the pipeline is opened and closed by operation of a valve actuator, and the actuator of such a valve is disclosed by the Korean Utility Model Publication No. Known as 20-1999-39412.

That is, the conventional valve opening and closing device is shown in Figure 4, the housing 111 is coupled to the opening and closing valve 100 via a bracket, the limit switch 115 installed inside the housing 111, Cam shaft 118 and the lower end through the housing 111 is coupled to the operating shaft (100a) of the valve 100 and rotates together with the operating shaft (100a) of the valve in accordance with the opening and closing operation of the valve 100 and And a pair of switch actuating cams 121 and 122 installed on the cam shaft 118 and rotating together with the cam shaft 118 to operate the terminals 116 and 117 of the limit switch 115, respectively. On the outer circumferential surface of 118, the bushings 119 and 120 are fixedly inserted into positions corresponding to the on / off switch terminals 116 and 117 of the limit switch 115, respectively, and the pair of actuating cams 121 and 122 are fixed. A plurality of grooves are formed along the circumferential direction on the inner circumference of the through hole, The outer circumferential surfaces of the bushings 119 and 120 are engaged with the plurality of protrusions 119a and 120a formed along the circumferential direction, and a spring 123 is inserted between the actuating cams 121 and 122 to install the actuating cams 121 and 122. ) Is configured to support elastically.

In the conventional valve opening and closing device configured as described above, two actuating cams are coupled to each other by a bushing and a plurality of protrusions so as to be fixed to each other. Positioning is difficult and the structure is complicated, such as pressing the cam away from the bushing and then rotating it properly to engage the bushing again.

In particular, there was a problem that the wrong position setting because the function for a particular position is not displayed on the operation cam. For example, problems such as setting the operating cam in the open position to the closed position could occur. In addition, there is a problem that it is difficult to finely adjust the position of the operation cam according to the slight difference between the opening and closing operation position of the valve.

The present invention is devised in order to solve the disadvantages of the conventional valve opening and closing device, and easy to adjust the position of the operation cam to inform the opening and closing operation of the valve, while the fine adjustment is simple, and the wrong position setting by mistake. It is an object of the present invention to provide a valve opening and closing operation device that can be prevented.

The present invention for achieving the above object is a valve opening and closing operation unit connected to the valve for opening and closing the valve, a display unit for displaying the open and close state of the valve to the outside, a plurality of selectively applying or blocking power to the display unit In the valve opening and closing device including a limit switch assembly consisting of a limit switch, and a cam assembly for rotating each of the limit switches in a timely manner while rotating in conjunction with the valve opening and closing operation,

The cam assembly is connected to the valve shaft of the on-off valve concentrically and the cam rotating shaft to rotate simultaneously with the valve shaft; A cam member having a cam protrusion protruding radially outward, an uneven portion formed on an outer circumferential surface thereof, and a central through hole formed through the center axis direction; A cylindrical cam support shaft and a cam support shaft of the cylindrical cam support shaft and the cam support shaft are provided on the same center axis as the cam rotation shaft, and are fitted to the center through hole of the cam member. A cam support block integrally provided at a lower end and having a cam support surface supporting and supporting a bottom of a cam member fitted to the cam support shaft; and the cam member fitted to the cam support shaft of the cam support block to be tightly fixed from above. It is characterized in that the cam fixing block is fitted to the chamfer rotation shaft and fixed to the other cam support block below and a high information bolt to each other, and a plurality of cam members and a cam fixing block is alternately fitted on the cam rotation shaft.

According to the valve opening and closing device of the present invention, the rotation angle of the valve shaft for opening and closing the valve is different according to the type of valve, and the rotation angle of the cam member for operating the limit switch is correspondingly required. If there is, the rotation angle can be changed and adjusted with the cam member assembled without having to remove the limit switch.

1 is a perspective view showing the main configuration of the valve opening and closing operation apparatus according to the present invention,

Figure 2 is an exploded perspective view showing the separation of the cam assembly configuration of the valve opening and closing device according to the present invention,

3 is a cross-sectional view of the combination of the cam assembly of FIG.

Figure 4 is a schematic perspective view of the main part of the conventional valve opening and closing operation device.

※ Explanation of code for main part of drawing

1: on-off valve 2: valve shaft

10: valve opening and closing part 11: coupling

12: worm wheel 13: worm gear

14: gear 15: drive screw

20: display device 21: valve open display lamp

22: valve closing display lamp 23: power supply lamp

24: over torque lamp 25: plate

26, 27, 28, 29: limit switch 30: cam assembly

31: cam rotation shaft 32: cam support block

33: cam member 33a: cam projection

33b: uneven portion 33c: through hole

34: cam fixing block 34a: cam support shaft

34b: Cam support surface 35: High information Ult

M: Motor P: Pipeline

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

As shown in FIG. 1, the opening / closing valve 1 installed in the pipeline P through which the fluid flows and opening / closing the pipeline P is opened and closed by the valve operation unit 10. Here, the valve operation unit 10 is a worm wheel 12 is coupled coaxially with the valve shaft 2 of the on-off valve 1 through the coupling 11, and the worm wheel in engagement with the worm wheel 12 The worm gear 13 for rotating the 12 and the motor M for rotating the drive screw 15 meshed with the gear 14 via the gear 14 are configured. The drive screw 15 may be rotated by attaching a manual handle (not shown) and rotating the manual handle instead of connecting the motor M to the tip.

In addition, a plurality of display devices 20 which respectively display the on / off state of the on / off valve, the overtorque state of the valve, or whether the power supply is input in response to the on / off state of the on / off valve 1. Is provided. The display device 20 has a valve opening display lamp 21 which is turned on by applying power when the on-off valve 1 is in an on state, and power when the on-off valve 1 is in an off state. Is applied to the valve closing display lamp 22 to be turned on, the power lamp 23 to be turned on when power is applied to the motor M, and the overtorque which is turned on when the torque applied to the valve shaft 2 is greater than or equal to the set value. It consists of a lamp 24. The overtorque lamp 24 is detected when the foreign matter is caught in the valve operation part or the valve operating member is subjected to abnormal friction when the torque is excessively applied to the valve shaft (2) is to be detected and turned on.

On the other hand, the lamps 21, 22, 23, 24 are provided on the plate 25 which is provided at the tip of the cam rotation shaft 31 and exposed to the outside of the housing (not shown). Each of the lamps 21, 22, 23, and 24 is connected to a power source through each of the limit switches 26, 27, 28, and 29, and the limit switches 26, 27, 28, and 29 operate when the limit switches 26, 27, 28, and 29 operate. Lamps corresponding to the switches 26, 27, 28, and 29 are turned on, and the plurality of limit switches 26, 27, 28, and 29 are stacked in the vertical direction and operated by the cam assembly 30 described later. It is installed adjacent to the cam assembly 30.

As shown in FIG. 2, the cam assembly 30 includes a cam rotation shaft 31 which is connected concentrically with the valve shaft 2 of the on / off valve and rotates simultaneously with the valve shaft 2. The cam support block 32 is provided below the cam rotation shaft 31 to seat and fix the cam member 33. The cam support block 32 is fitted above the cam support block 32 in the center axis direction. A plurality of cam members 33 and cam fixing blocks 34 disposed above the cam members 33 and pressed and fixed by pressing the cam members 33 below are alternately stacked and assembled.

Each of the cam members 33 includes a cam protrusion 33a protruding radially outward, an uneven portion 33b formed on the outer circumferential surface, and a central through hole 33c formed through the center axis direction.

The cam support block 32 is provided coaxially with the cam rotation shaft 31 on the same center axis as the cam rotation shaft 31, and the cam member 33 is inserted through the center through hole 33c at the upper portion thereof. A cam cam shaft 34 assembled with a cylindrical cam support shaft 34a formed at a height slightly lower than the thickness of the cam member 33, and integrally provided at a lower end of the cam support shaft 34a, and fitted to the cam support shaft 34a. The cam support surface 34b which supports and supports the bottom face of the member 33 is provided.

As shown in FIG. 3, the cam fixing block 34 is fitted to the cam rotation shaft 31 to fix the cam member 33 fitted to the cam support shaft 34a of the cam support block 32 from above. The cam support shaft 34a is fastened to the other cam support block 32 on the lower side with the high information bolt 35, and the cam support shaft 34a for supporting the other cam member 33 is provided on the upper surface of the cam support shaft 34a. The lower side becomes a shape provided with the support surface 34b which supports the bottom face of the cam member 33 fitted to the cam support shaft 34a.

The plurality of cam members 33 and the cam fixing block 34 are alternately fitted on the cam rotation shaft 31 to fasten the upper cam fixing block 34 and the lower cam fixing block 34 to each other by the high information bolt 35. As a result, the cam member 33 disposed therebetween is fixed in close contact.

In particular, the upper surface of the cam fixing block 34 of the uppermost side by marking the name of the function corresponding to the position for each cam operating position it is possible to set the assembly position of the specific cam member 33 without error.

The assembly method of the cam assembly 30 will be described with reference to FIGS. 2 and 3 as follows.

The first cam member 33 is fitted on the cam rotation shaft 31 and seated on the cam support block 32 provided at the lower portion of the cam rotation shaft 31. Then, the first cam fixing block 34 is fitted thereon and fastened to the lower cam support block 32 by a high information bolt 35. At this time, the high information bolt 35 is coupled to the cam support block 32 and presses the cam fixing block 34 toward the cam member 33, so that the lower cam member 33 is fixed by the frictional force. Then, the second cam member 33 is inserted on the cam fixing block 34 so that the through hole 33c is fitted on the cam support shaft 34a of the cam fixing block 34, and then the second cam fixing is placed thereon. When the block 34 is fitted and assembled in the same manner as the first method, the second cam member 33 is also fixed in position. The third cam member 33 and the fourth cam member 33 are also assembled in the same manner.

On the other hand, the timing at which the cam member 33 operates the limit switches 26, 27, 28, 29 varies depending on the relative position of the projection 33a of the cam members 33 with respect to the cam rotation shaft 31. To change the projection position of the cam member 33, loosen the high information bolt 35 that secures the cam fixing block 34 on the uppermost side slightly, and then loosen the next cam fixing block 34 in order. By changing the protrusion position of the cam member 33 by turning the uneven portion 33b of the specific cam member 33 to be changed with a finger, and then assembling it again in the reverse order, the position of the cam member 33 can be changed and adjusted.

The cam assembly 30 assembled as described above causes the cam rotation shaft 31 connected to the valve shaft 2 to rotate when the valve shaft 2 rotates by the cam operating member 10 to open and close the valve 1. The cam members 33 provided on the cam rotation shaft 31 are also rotated to timely press the limit switches 26, 27, 28, 29 to which the cam protrusions 33a are adjacent. Accordingly, the limit switches 26, 27, 28, and 29 cut off or apply power to the corresponding display lamps 21, 22, 23, and 24.

For example, when the valve shaft 2 rotates to the valve opening / closing position, the cam member 33 rotated with this is operated by pressing the corresponding limit switches 26, 27, 28, and 29 with protrusions, and the limit switches 26, 27 And 28 and 29 turn on the valve open display lamp 21 provided in the indicator plate 25 to indicate the open state of the valve to the outside.

As described above, since the valve opening and closing operation device of the present invention is easy to change the installation position of the cam member 33, when the valve opening and closing angle is used for various valves having different valve opening and closing angles, the installation position of the cam member is easily changed. In particular, since the operating position of the cam member is marked on the upper surface, there is an advantage of accurately matching the assembly position of the cam member without error. In addition, since the limit switch assembly is installed separately from the cam assembly, there is an advantage in that the limit switch can be separated and replaced without changing the cam member position of the cam assembly when replacing the limit switch assembly that is relatively frequently replaced.

Claims (1)

A valve operating portion 10 connected to various on / off valves to open and close the valve, a display device 20 for displaying the open / closed state of the valve 1 to the outside, and a power supply to the display device 20 Limit switch assembly consisting of a plurality of limit switches (26, 27, 28, 29) to be applied or blocked by the, and each of the limit switches (26, 27, 28, 29) while rotating in conjunction with the valve operation portion 10 In the valve opening and closing device including the cam assembly 30 to individually operate the timely, The cam assembly 30 is connected to the valve shaft (2) of the on-off valve concentrically and the cam rotation shaft 31 to rotate simultaneously with the valve shaft (2); A cam member 33 having a cam protrusion 33a protruding radially outward, an uneven portion 33b formed on the outer circumferential surface, and a central through hole 33c formed in the central axial direction; It is provided coaxially with the cam rotation shaft 31 on the same center axis as the cam rotation shaft 31, the upper part of the center through-hole 33c of the cam member 33 is assembled and assembled than the thickness of the cam member 33 A cam which is integrally provided at the lower end of the cylindrical cam support shaft 34a and the cam support shaft 34a formed at a slightly smaller height and supports the bottom surface of the cam member 33 fitted to the cam support shaft 34a. A cam support block 32 having a support surface 34b; The cam member 33 fitted to the cam support shaft 34a of the cam support block 32 is fitted to the cam rotation shaft 31 so as to be fixed in close contact with the other cam support block 32 below and the high information bolt 35. And a cam fixing block (34) fixed and fastened by the valve opening and closing operation, characterized in that a plurality of cam members (33) and cam fixing blocks (34) are alternately fitted and fixed on the cam rotation shaft (31). Device.