KR101634969B1

KR101634969B1 - actuator having an emergency control

Info

Publication number: KR101634969B1
Application number: KR1020150147703A
Authority: KR
Inventors: 유명호
Original assignee: 주식회사 유니락
Priority date: 2015-10-23
Filing date: 2015-10-23
Publication date: 2016-07-04

Abstract

The present invention relates to a valve device having a valve body, a valve body having a channel formed by an actuator assembled with a valve to open or close a channel, a diaphragm disposed directly above the valve seat, A bonnet mounted and fixed to the connecting portion and having a space therein; An actuator main body having a cylinder assembled to the bonnet in a screw engagement manner, a piston provided inside the cylinder being lowered by a spring, and injecting compressed air into an air passage formed in the piston to lift the piston; And an upper portion of the pressing body is extended to an inner space of the bonnet, and a ball bracket having a tapered surface at a lower portion of the pressing bracket, An opening / closing part made of a ball sandwiched between the bodies; An inclined fin having an inclined surface formed on an outer surface thereof and assembled to the bottom surface of the piston to move up and down and horizontally move the ball; An emergency moving part in which a rotation preventing bolt passing through the cylinder is fitted to a groove formed in the bonnet and a state checking member is provided between an outer surface stepped portion of the bonnet and a bottom surface of the cylinder, When the cylinder is not able to be injected or when it is required to close the flow passage, the rotation prevention bolt is removed, and the cylinder is closed to close the flow passage. However, if the state confirmation member of the cylinder is broken or curved, Feature.

Description

[0001] The present invention relates to an actuator having an emergency control function,

The present invention relates to an actuator provided with an emergency control function.

More particularly, the present invention provides an emergency operation unit for preventing a safety accident in case of urgent closing of a valve passage or an abnormality in a system for controlling a valve, and furthermore, And an actuator provided with the emergency control function.

BACKGROUND OF THE INVENTION [0002] Generally, a valve guides and blocks the transfer of fluids or gases, and is used in various applications because of its numerous shapes, types, and structures.

Recently, such a valve is combined with an actuator for easy automation or control, and the control system is automatically opened and closed.

For example, the actuator of the patent 10-2013-0037026

And a piston is provided on an inner side of the tube provided with a head cover on its upper portion and a rod cover on its lower portion which is moved up and down by compressed air supplied through a port formed in each of the head cover and the rod cover, And a lower end of the cylinder is provided with a piston rod extending through the rod cover; And a valve disc connected to the lower end of the piston rod and moving up and down, and configured to close or separate from the valve seat installed in the flow path through which the fluid flows to block or open the flow path; And a disk spring installed on the rod cover of the cylinder and elastically supporting the piston descending immediately before the valve disk is brought into close contact with the valve seat to reduce the moving speed,

The valve disc and the valve seat can be protected by allowing the valve to be closed gradually and smoothly by attenuating the moving speed and force of the piston when the valve is closed.

As another example, the valve actuating actuator of the domestic patent 10-0904864

A body having a space formed therein; A piston rod that linearly moves inside the body by oil and air pressure introduced into and discharged from the inside of the body; A yoke rotatably installed on the body through a valve drive shaft so as to be rotated by the body in association with the piston rod; And a connecting member coupled to the piston rod and slidably mounted on the yoke so as to convert the linear motion of the piston rod into a rotating motion of the yoke, thereby improving the durability of the connecting member.

However, such a conventional actuator or valve-driving actuator is constituted and operated according to the purpose, but there is a problem that it can not be prepared for a safety accident.

That is, the above-described valves have a problem that the operator can not directly close the flow path when a malfunction of the control system or a failure of the pressure pump and the closing of the flow path are required. In addition, such a problem may lead to a serious accident that the material passing through the flow path is dangerous.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an actuator having an emergency control function capable of preventing an accident in advance by manually opening and closing a valve in preparation for an emergency, .

It is another object of the present invention to provide an actuator having an emergency control function for facilitating operation by providing a status confirmation member for confirming whether the flow path is closed during an emergency operation from the outside.

Further, according to the present invention, the inclined fin is provided at the lower portion of the piston to move the ball, thereby opening and closing the oil passage, and facilitating assembly and machining of the inclined fin, and also separating the cylinder and the piston. Invention.

The present invention relates to a valve device comprising a valve body having an oil passage formed by an actuator assembled with a valve to open or close the oil passage, a diaphragm disposed directly above the valve seat, A bonnet mounted and fixed to the connecting portion and having a space therein; An actuator main body having a cylinder assembled to the bonnet in a screw engagement manner, a piston provided inside the cylinder being lowered by a spring, and injecting compressed air into an air passage formed in the piston to lift the piston; And an upper portion of the pressing body is extended to an inner space of the bonnet, and a ball bracket having a tapered surface at a lower portion of the pressing bracket, An opening / closing part made of a ball sandwiched between the bodies; An inclined fin having an inclined surface formed on an outer surface thereof and assembled to the bottom surface of the piston to move up and down and horizontally move the ball; An emergency moving part in which a rotation preventing bolt passing through the cylinder is fitted to a groove formed in the bonnet and a state checking member is provided between an outer surface stepped portion of the bonnet and a bottom surface of the cylinder, When the cylinder is not able to be injected or when it is required to close the flow passage, the rotation prevention bolt is removed, and the cylinder is closed to close the flow passage. However, if the state confirmation member of the cylinder is broken or curved, Feature.

The present invention is advantageous in that it is easy to manufacture, easy to assemble, and has an emergency moving part so as to prevent the accident from occurring by closing the valve channel in an emergency situation, because the cylinder, the piston, the slant pin, have.

Further, according to the present invention, when the emergency moving part is operated, since the state checking member is provided, it is possible to recognize that the flow path is closed to the operator, and furthermore, an unreasonable force is given to the operator.

1 is a front sectional view of an actuator according to the present invention,
2 is an assembled cross-sectional view of an actuator according to the present invention,
3 is an enlarged cross-sectional view of an actuator according to the present invention,
4 is a cross-sectional view illustrating an operation of the actuator according to the present invention,
FIG. 5 is a side view showing an example of a state checking member applied to the present invention,
6 is a side view showing another example of the state checking member applied to the present invention,
7 is a side view showing still another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, the same reference numerals are used for the same components, and additional descriptions that may overlap or limit the meaning of the present invention may be omitted in describing embodiments of the present invention.

Prior to the description of the present invention, in the context of the environment in which the singular / plural is not clearly distinguished in the use of the Korean language and the conventional usage environment of the term in the field, although the singular expression is described in the present specification, And is used in a sense to include plural expressions unless it is contrary to the interpretation or expressly contradicts otherwise. It is also to be understood that the terms 'comprising,''comprising,''comprising,''comprising,' and the like, which may be described orended herein, may include the presence or addition of one or more other features, It should be understood that it is not excluded in advance.

1 is a cross-sectional front view of an actuator according to the present invention, FIG. 2 is an assembled cross-sectional view of an actuator according to the present invention, and FIG. 3 is an enlarged cross-sectional view of an actuator according to the present invention.

4 is a cross-sectional view illustrating an operation of the actuator according to the present invention. FIG. 5 is a side view showing an example of a state checking member applied to the present invention. FIG. FIG. 7 is a side view showing still another embodiment of the present invention. FIG.

The actuator 10 of the present invention comprises a valve body 100 provided with a flow path 120 and an actuator body portion 200 for opening or closing the flow path 120. Here, The emergency operation portion 40 is provided.

Valve body (100)

The valve body 100 according to the present invention includes a flow path 120 through which the inlet and the outlet communicate with each other through a straight line or at a predetermined angle and a valve seat 130 is provided at a central portion or at a certain point of the flow path 120 And the diaphragm 140 is positioned directly above the valve seat 130. [

The diaphragm 140 is positioned in an inner space of the connection part as shown in the figure and the guide part 160 is pushed upward A body 170 is provided.

That is, when the guide portion 160 is inserted into the connection portion 150, the pushing body 170 is inserted into the guide portion 160 again, and the pushing body moves up and down along the guide portion, , Or to cancel the depression.

On the other hand, the pusher 170 has a structure in which the upper portion thereof extends to the bonnet 20 described later, and the ball 30 can move along the upper surface thereof in accordance with the operation of the tapered pin.

draw (50)

The opening and closing part 50 according to the present invention is installed in the inner space 22 of the bonnet 20 and has a connecting part 150 and includes a pressing body 170 and a ball 30 and a ball bracket 255, and the inclined fin 250 is further provided.

As shown in the figure, the upper body and lower portion of the push body 170 may be separated from each other or may be integrally formed as shown in the drawing. Of course, separation type is easy to make and assemble.

The ball bracket 255 is assembled to the bonnet 20 at a spacing from the pressing body so that the ball 30 is inserted therebetween and a tapered surface 256 upwardly inclined from the rim to the central portion is formed on the bottom surface So that the space becomes gradually smaller as the space between the upper surfaces of the pressing bodies goes outward.

Meanwhile, the inclined fin 250 is formed in an inverted conical shape having a larger diameter from the lower end to the upper end. When the inclined fin 250 is lowered, the inclined plane 251 pushes the ball 30 outward and the ball moves along the tapered surface The pushing body 170 is moved downward to press the diaphragm.

Actuator The body portion (200)

The actuator body 200 according to the present invention includes a cylinder 210, a piston 240, and a spring 230.

The cylinder 210 is assembled by being separated into a cylinder lower body 214 and a cylinder body 212. The cylinder lower body 212 is screwed to a threaded portion formed in the bonnet 20 so that the operation of the emergency moving part The cylinder is rotated around the threaded portion and descends to close the flow path.

The piston 240 is divided into an upper piston, a center piston, and a lower piston, and is assembled to each other.

The upper piston 141 is provided with a fitting groove 141a on an upper surface thereof so that a lower end of a spring 230 fitted in a receiving portion 220 provided in the cylinder body 214 is fitted, And the center piston 242 is fixed to the inside of the cylinder body 212 on the outer surface in a state where the center piston 242 is sandwiched between the axial rod 244 and the up and down movement of the upper and lower pistons Guide.

An inclined fin 250 is assembled to the lower portion of the shaft 144 and an upper portion of the upper piston 241 is fitted to the lower surface of the upper piston 241 to be able to move together. A shaft portion 245 protruding from the upper surface of the upper piston 241 And extends to the air inlet 262 formed in the upper portion of the cylinder body 212.

An air passage 260 is formed through the shaft portion 245 and communicates with the air inlet port to the lower portion of the shaft 244. The air passage 260 is connected to the air passage so as to form a space between the upper surface of the cylinder lower body and the lower piston bottom surface, And an air inlet 264 through which compressed air can be injected is provided between the piston and the center piston.

1 is a state in which compressed air is injected to open the oil passage with the piston 240 moved upward.

Compressed air is supplied to the air passage 260 through the injection port 262 and supplied to the respective expansion spaces 202 and 204 via the air inlet 264 connected to the air passage so that the upper and lower pistons 241, (243) moves upward.

Of course, the inclined fin 250 is also moved so that the pressing body 170 is not subjected to any pressure. In this state, the transfer fluid (gas) flowing from the inlet of the flow path 120 pushes the diaphragm while pushing it, and at this time, the pressing member 170 rises and the ball 30 naturally moves to the central part having a large cross- .

2 shows a state in which the flow path is closed.

When the supply of the compressed air stops, the spring 230 pushes the upper piston 141, so that the lower piston 143 and the tilting pin 250 move downward so that the ball 30 and the pressing body 170 are sequentially To close the flow path.

The emergency moving part (40)

The emergency moving part (40) according to the present invention is used when a failure of the valve control system or a line of one line is abruptly closed. Especially when a flowing material is dangerous, a large accident can be prevented in advance.

The emergency moving part 40 is provided with a groove 41 on the outer wall of the bonnet 20 and a thread 42 formed on the lower cylinder body 214 in a straight line with the thread 41. The rotation preventing The bolt 44 is fitted into the groove 41, and the bonnet and the cylinder are fastened and fixed.

A check gap 43 is provided between the bottom surface of the cylinder lower body 214 and the step portion 24 provided on the outer wall of the bonnet 20. A state check member 45 is provided in the check gap 43 It is inserted.

In this state, when an emergency occurs, the operator pulls out the anti-rotation bolt 44 and rotates the cylinder 210 so that the cylinder 210 descends along the screw formed in the bonnet, It is forcibly lowered to the inclined fin 250, and the ball and the pressing body are moved to press the diaphragm to close the flow path.

In this process, the present invention is provided with the status checking member 45 so that the operator can know to which position to descend, and force is applied to the piston, the pushing member, and the ball so that they are not crushed or bent , Particularly, the breakage of the diaphragm can be prevented.

That is, when the cylinder 210 is lowered, a portion where the bottom surface of the cylinder and the step portion 24 are in contact with each other acts like a blade, and the outer portion of the plate- It is warped or broken, and the operator can know that the flow path is closed.

5 and 6 attached to the present invention show an embodiment of the status confirmation member 45 applied to the present invention.

First, the state checking member 45 shown in FIG. 5A is constructed in a semi-circular shape so that it can be inserted and FIG. 5B is configured in a pin shape or a plate shape.

The inner circumferential core member 45a is made of rubber, silicone or the like which is capable of preventing abrasion or warping of the internal structure by having the buffering force at the same time as being pressed with elasticity. Soft synthetic resin or the like, and the outer portion 45b may be made of a non-ferrous metal or acrylic or a glass material.

6 is a state confirmation member 45 of another type, in which a pair of status confirmation members formed in a semicircular shape are connected by a hinge 45c and provided with a handle 45d on both sides.

The status check member having such a configuration is advantageous in that it is easy to hold the both sides of the handle and to spread it or fit it into the gap.

Figure 7 is another embodiment of the present invention.

In this embodiment, two holes 200a are machined on the upper surface of the cylinder body 212, and a fork-shaped tool is inserted into the holes, so that the cylinder is rotated to facilitate rotation.

10: Actuator 30: Ball
40: Emergency moving part 100:
120: EURO 140: Diaphragm
200: Actuator body 210: Cylinder
230: spring 240: piston
250: Lever pin

Claims

By assembling the valve to open or close the flow path as an actuator,
A valve body in which a flow path is formed, a diaphragm is provided directly above the valve seat, and a connection portion is extended upward;
A bonnet mounted and fixed to the connecting portion and having a space therein;
An actuator main body having a cylinder assembled to the bonnet in a screw engagement manner, a piston provided inside the cylinder being lowered by a spring, and injecting compressed air into an air passage formed in the piston to lift the piston;
And an upper portion of the pressing body is extended to an inner space of the bonnet, and a ball bracket having a tapered surface at a lower portion of the pressing bracket, An opening / closing part made of a ball sandwiched between the bodies;
An inclined fin having an inclined surface formed on an outer surface thereof and assembled to the bottom surface of the piston to move up and down and horizontally move the ball;
An emergency moving part in which a rotation preventing bolt passing through the cylinder is fitted to a groove formed in the bonnet and a state confirmation member is provided in a check gap provided between an outer surface stepped portion of the bonnet and a bottom surface of the cylinder,
The valve is closed when the failure of the valve control system or the injection of the compressed air is required or when the flow passage is required to be closed, and the cylinder is rotated down to close the flow passage. When the state checking member of the cylinder is broken or bent, The controller is configured to recognize that the actuator is closed.

The method according to claim 1,
Wherein the inclined fin comprises an inverted conical shape whose diameter gradually decreases from an upper portion to a lower portion, and when the inclined fin is lowered, the pushing body is pressed downward while the ball is pushed outward, .

The method according to claim 1,
Wherein the state checking member comprises a semicircular or pin-like shape and is fitted in the check gap.

The method according to claim 1,
Wherein the piston is assembled into an upper portion, a center portion and a lower portion of the piston and fitted to each other, and the cylinder is assembled from a cylinder lower body and a cylinder body.