KR200492421Y1 - Valve opening / closing device using diaphragm linked with pneumatic actuator - Google Patents

Abstract

The present invention relates to a valve opening/closing device using a diaphragm in connection with a pneumatic actuator capable of controlling water shock and a fixed amount of fluid by finely adjusting the setting section of the valve opening and closing time by a diaphragm operated by pneumatic pressure, A pneumatic actuator for opening and closing the valve by rotating the shaft by the movement of the piston formed with the gear unit is provided, and a valve opening/closing device is coupled to the pneumatic actuator to adjust the opening and closing amount of the valve at the time of opening and closing, and the valve opening and closing Inside the device, a diaphragm is coupled between the upper cover and the lower cover, and a moving shaft inserted into the pneumatic actuator is coupled to the diaphragm, and the upper cover is opened and closed by moving a moving shaft and a piston by pneumatic pressure. An air hose capable of adjusting the amount is coupled, and a bracket is coupled between the pneumatic actuator and the valve opening and closing device.
Therefore, the present invention can prevent water shock that occurs in the pipeline when the valve opening and closing time is finely adjusted by the valve opening and closing member coupled to the pneumatic actuator, and when closed, it transfers a fixed amount of fluid. There is an effect that can be done. In addition, since the moving shaft is moved by the diaphragm operated by pneumatic pressure to finely control the opening and closing amount of the valve, it is possible to reduce the manufacturing cost and product cost by a simple configuration and operation, and a coupling structure, thereby having a more economical effect.

Description

Valve opening / closing device using diaphragm linked with pneumatic actuator}

The present invention relates to a rotary pneumatic actuator that is installed in a low station to control the opening and closing of the valve.More specifically, the opening and closing time of the valve is finely adjusted by a diaphragm operated by pneumatic pressure to control water impact and quantification. It relates to a valve opening and closing device using a diaphragm interlocking with a pneumatic actuator capable of controlling the fluid of the.

In general, in order to automatically control the flow rate of the fluid flowing through the pipeline by hydraulic or pneumatic pressure, an actuator is connected to a valve of the pipeline and the valve is opened and closed.

As such a conventional actuator, since the pressure chamber is not easily deformed in Registered Utility Model Publication No. 20-0349460, a valve actuator is provided that prevents malfunction of the valve due to the deformation of the pressure chamber and extends its life.

The actuator includes a housing and a diaphragm provided in the housing and partitioning an inner space of the housing so that a pressure chamber is formed on one side thereof, and the diaphragm is operated by hydraulic pressure or pneumatic pressure introduced into the pressure chamber to open and close the valve. In the valve actuator, the housing is configured such that a plurality of reinforcing protrusions protrude from a wall surface facing the pressure chamber, and the reinforcing protrusion reinforces the strength of the pressure chamber to withstand hydraulic pressure or pneumatic pressure.

However, such valve actuators have a water shock in the pipeline due to rapid fluid transfer when the valve is opened, and it is difficult to control a fixed amount of fluid when closed, so in recent years it is difficult to control the opening and closing speed of the valve, or separate cylinders and pistons. A valve opening/closing device for controlling the sudden opening/closing point of a valve by using is proposed.

However, this valve opening and closing device not only increases manufacturing cost and product cost due to the installation of cylinders and pistons operated by pneumatic and hydraulic pressure, but also has a problem that is not economical because maintenance is not easy.

The present invention is to solve the above problems, a valve using a diaphragm that works with an improved pneumatic actuator to transfer water shock and a fixed amount of fluid by finely adjusting the setting section of the valve opening and closing time. It is an object to provide an opening and closing device.

In addition, another object of the present invention is to provide a valve opening/closing device using a diaphragm interlocking with a pneumatic actuator with improved economic efficiency by improving the ability to control the opening/closing amount using a diaphragm operated by pneumatic pressure.

The valve opening and closing device using a diaphragm interlocking with the pneumatic actuator according to the present invention is provided with a pneumatic actuator that opens and closes the valve by rotating the shaft by the movement of a piston formed with a gear unit. A valve opening/closing device capable of adjusting the amount of opening/closing is coupled, and a diaphragm is coupled between the upper cover and the lower cover at the inside of the valve opening/closing device, and a moving shaft inserted into the inside of the pneumatic actuator is coupled to the diaphragm. An air hose capable of adjusting the opening/closing amount of the valve by moving the moving shaft and the piston by pneumatic pressure is coupled to the upper cover, and a bracket is coupled between the pneumatic actuator and the valve opening/closing device.

According to the valve opening/closing device using a diaphragm interlocking with the pneumatic actuator according to the present invention, the valve opening and closing member coupled to the pneumatic actuator finely adjusts the setting section of the valve opening and closing points, thereby generating a water shock in the pipeline when opening. It can be prevented, and when sealed, there is an effect of transferring a fixed amount of fluid.

In addition, since the moving shaft is moved by the diaphragm operated by pneumatic pressure to finely control the opening and closing amount of the valve, it is possible to reduce the manufacturing cost and product cost by a simple configuration and operation, and a coupling structure, thereby having a more economical effect.

1 is a perspective view of a pneumatic actuator and valve coupled to the valve opening and closing device of the present invention
Figure 2 is a combined state diagram of the valve opening and closing device and the pneumatic actuator according to the present invention
3 is a cross-sectional view of a valve opening and closing device according to the present invention
4 is an exploded cross-sectional view taken along line AA of FIG. 1
Figure 5 is a cross-sectional view of the present invention
6 is a graph showing the operation process of the present invention
7 is a cross-sectional view showing a first embodiment of the present invention
8 is a cross-sectional view showing a second embodiment of the present invention

A preferred embodiment of the present invention will be described in detail through the accompanying drawings.

In the valve opening/closing device using a diaphragm interlocking with the pneumatic actuator of the present invention, a pneumatic actuator 100 is coupled to an upper side of a valve B with a ball installed inside, as shown in FIG. By opening and closing the valve B by means of the valve B, it is configured to transfer the fluid through a conduit (not shown) coupled to the left and right of the valve B.

As shown in FIG. 2, a valve opening/closing device 200 is coupled to the pneumatic actuator 100, and the valve opening/closing device 200 controls the amount of opening and closing in a preset section between the opening and closing points of the valve B. By finely adjusting it, it prevents water impact on the pipeline when it is opened, and plays a role of controlling so that a fixed amount of fluid can be transferred when it is closed.

In the valve opening/closing device 200 of the present invention, as shown in FIG. 3, the upper cover 50 and the lower cover 51 are closely coupled by bolts and nuts, and air is introduced into the upper side of the upper cover 50. An air hose 52 that can be discharged or discharged is coupled with a solenoid valve (not shown).

Between the upper cover 50 and the lower cover 51, a diaphragm 60 made of elastic rubber is coupled and located inside, and upper fixing portions made of metal on the upper and lower sides of the diaphragm 60 ( 61) and the lower fixing part 62 are bolted from the upper side of the upper fixing part 61 together with the moving shaft 70 passing through the center.

A bearing 71 is coupled to the lower cover 51, and the movable shaft 70 penetrates the bearing 71 and extends to the outside.

The valve opening/closing device 200 of the present invention is coupled to the pneumatic actuator 100 by a bracket 80 as shown in FIG. 4, and the internal configuration of the pneumatic actuator 100 shown in the drawing is a cross-sectional view.

In the body 10 of the pneumatic actuator 100, two air holes 11 connected to the solenoid valve are formed on one side so that the valve B can be opened and closed by introducing and discharging air to the inside to form pneumatic pressure. And, on the other side, a pair of stop pins 12 are coupled at intervals.

Covers 20 are closely coupled to both sides of the body 10, and shaft holes 21 are formed in the cover 20 connected to the valve opening/closing device 200 so that the moving shaft 70 can pass therethrough. have.

A shaft 30 that is drawn downward from the pneumatic actuator 100 and connected to the valve B is coupled to the inner central portion of the body 10, and the valve B is rotated on the outer circumferential surface of the shaft 30 The gear is formed so that it can open and close.

A stopper 31 is coupled to the upper side of the shaft 30, and the stopper 31 is rotated 90° to the left and right with the shaft 30 by blocking rotation by a pair of stop pins 12. It is structured to do.

A pair of pistons 40 are provided on both sides of the shaft 30, and a gear formed on the outer circumferential surface of the shaft 30 in the vertical direction centering on the shaft 30 on the front surface of the piston 40 and The meshing gear part 41 is formed, and an elastic force is applied to the center portion of the shaft 30 by a plurality of springs 42.

A plurality of female screws are formed in the cover 20 so that the bracket 80 made of metal is firmly coupled by bolts, and the bearing 71 and the moving shaft 70 can be coupled to the center of the bracket 80. The coupling space 81 and the shaft hole 82 are formed so that the end of the moving shaft 70 passes through the shaft holes 21 and 82 of the bracket 80 and the cover 20 so that the body 10 It is inserted inward.

The valve opening and closing device 200 is coupled to the upper side of the bracket 80 thus coupled by a plurality of bolts, thereby being assembled as shown in FIG. 5.

In the valve opening/closing device using a diaphragm interlocking with the pneumatic actuator of the present invention configured as described above, the valve opening/closing device 200 adjusts the opening and closing amounts of the opening and closing points by a preset value when fluid is transferred through the valve (B). It is controlled so that a fixed amount of fluid can be transferred by fine adjustment.

That is, the opening and closing amount of the setting section at the opening point and the setting section at the closing point is finely adjusted. As shown in the graph of Fig. 6, the setting section from section a to section b when the valve B is opened and , By gradually adjusting the opening/closing amount of the valve (B) in the setting section from section g to section h, when the valve (B) is closed, it prevents rapid transfer of fluid and prevents water shock to the pipeline when it is opened. In case of sealing, it is possible to transfer a fixed amount of fluid.

At this time, the setting section at the time of opening and closing can be arbitrarily set by the user within the range of 10% to 30%, respectively, depending on the diameter of the pipe and the density of the fluid, and the length of the moving shaft 70 according to these setting values Is determined.

As shown in FIG. 7, the diaphragm 60 bent by the pressure of air filled inside the upper cover 50 through the air hose 52, and the moving shaft 70 moving accordingly, and It is possible by interlocking the pistons 40 moving left and right by the pneumatic pressure inside the pneumatic actuator 100.

That is, when air is introduced into the body 10 and the pressure increases, the piston 40 moves in the direction of the arrow and is in close contact with the moving shaft 70, and the shaft 30 rotates by the gear part 41. Thus, the 90% to 70% section of the valve B is opened, and the moving shaft 70 prevents further movement of the piston 70 by the pneumatic pressure inside the upper cover 50, so that the air hose 52 The opening of the rest of the setting section (10% ~ 30%) is finely controlled by the air discharge through.

On the contrary, when the air inside the body 10 is discharged, the piston 40 moves to the center by the elastic force of the spring 42 to seal the 90% to 70% section of the valve B, and the remaining 10% to 30 The section of% may be finely adjusted and sealed by the valve opening/closing member 200.

In addition, the present invention does not have a spring installed as shown in Figure 8, the first air hole 11a through which air is introduced between the pair of pistons 40, and the air is introduced into the outer space of the piston 40. It can also be used for the double acting double acting pneumatic actuator 100a provided with the second air hole 11b.

Therefore, the present invention prevents water shock generated in the pipeline when the valve opening and closing member 200 coupled to the pneumatic actuator 100 and 100a finely adjusts the setting section at the opening and closing points of the valve B. It can be done, and when sealed, there is an effect of transferring a fixed amount of fluid.

In addition, by moving the moving shaft 70 by the diaphragm 60 operated by pneumatic pressure, the opening and closing amount of the valve B can be finely adjusted, thereby reducing the manufacturing cost and product cost by a simple configuration and operation, and a combination structure. It can have a more economical effect.

10: body 11: air hole
11a: first air hole 11b: second air hole
12: stop pin 20: cover
21, 82: shaft hole 30: shaft
31: stopper 40: piston
41: gear part 42: spring
50: upper cover 51: lower cover
52: air hose 60: diaphragm
61: upper fixed government 62: lower fixed government
70: moving shaft 71: bearing
80: bracket 81: coupling space
100, 100a: pneumatic actuator 200: valve opening and closing device

Claims (4)

A pneumatic actuator 100 (100a) for opening and closing the valve B by rotating the shaft 30 by the movement of the piston 40 on which the gear part 41 is formed is provided, and the pneumatic actuator 100 (100a) A valve opening/closing device 200 capable of controlling the opening and closing time of the valve B is coupled, and the upper cover 50 and the lower cover 51 are inside the valve opening and closing device 200. A diaphragm 60 is coupled between the diaphragm 60, and a moving shaft 70 inserted into the pneumatic actuator 100, 100a is coupled to the diaphragm 60, and the upper cover 50 is a moving shaft by pneumatic pressure. An air hose 52 capable of adjusting the opening and closing amount of the valve B by moving the 70 and the piston 40 is coupled,
A valve opening/closing device using a diaphragm interlocking with a pneumatic actuator, characterized in that a bracket 80 is coupled between the pneumatic actuator 100 (100a) and the valve opening/closing device 200. The method of claim 1,
The upper and lower sides of the diaphragm 60 are coupled with an upper fixing part 61 and a lower fixing part 62, respectively, and a bearing 71 through which the moving shaft 70 passes is coupled to the lower cover 51. Valve opening/closing device using a diaphragm interlocking with a pneumatic actuator, characterized in that. The method of claim 1,
The valve opening/closing device 200 is a diaphragm interlocking with a pneumatic actuator, characterized in that it is configured to adjust the opening and closing amount of the 10% to 30% section of the valve B's opening point and the 10% to 30% section of the closing point. Valve opening and closing device using. delete

Images