KR20100030441A - Pneumatic actuator - Google Patents

Abstract

PURPOSE: A valve opening and closing device is provided to prevent the deformation of a rotation angle by setting the rotation angle of a rotary angle. CONSTITUTION: A valve opening and closing device comprises a housing(10), a rotating unit(20), a plurality of piston unit(30), a plurality of finished units(40) and a pressure hole(12). A through hole(11) is formed on the housing. The rotating unit is installed on the center of the through hole to rotate. A plurality of finished units finishes the both ends of the through hole. The pressure hole is formed to pass through the through hole of the housing.

Description

Valve actuator {Pneumatic actuator}

The present invention relates to a valve switchgear for opening and closing a valve using pressure, and more particularly, to a valve switchgear capable of easily opening and closing a valve with a small force using pressure, and furthermore, to adjust the rotation angle of the pressure valve switchgear rotating portion. To arbitrarily adjust the opening and closing angle of the valve.

In general, valves are installed in pipes and used to transfer or stop fluids or gases flowing through the pipes.

These valves are operated by the user by hand or by using a separate device, and are operated manually. Thus, manual adjustment by humans is not only cumbersome, but it is also necessary to automatically control the valve according to the modern automation trend. It must exist.

In addition, the automatic control of the valve must also be accompanied by the need to control the valve efficiently with as little energy as possible.

On the other hand, the valve is opened or closed to open or close the valve to transfer or stop the fluid or gas flowing in the tube, in some cases without varying degrees, without having to switch between a fully open or completely closed state There is also a need to switch between open or closed states.

For example, if the fluid is to be delivered continuously but the amount to be delivered is controlled between 100% and 50%, the valve used must be switched between full open and 50% open, but not between open and closed.

However, in the case of automatic control, there is no way to adjust the degree of opening or closing simply by switching between opening or closing.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a valve switchgear that can automatically open and close the valve by using a pressure and in particular easy to open and close with a small force.

It is also an object of the present invention to provide a valve switch that can arbitrarily adjust the opening and closing angle of the valve in order to adjust the degree of opening or closing of the valve.

The valve switch according to the present invention, in order to achieve the object of the above automatic control, the housing is formed through the cylindrical through hole, the rotating part is installed to rotate in the center of the through hole, and the through hole by the rotation of the rotating part It includes a plurality of piston parts that are opened or closed, a plurality of finishing parts for closing both ends of the through hole, and a pressure hole formed to penetrate the through hole of the housing.

In addition, the valve switch according to the present invention has a rotation angle adjusting portion to achieve the purpose of the opening and closing angle adjustment, the rotation angle adjusting portion is a rotating hole formed in the upper portion of the housing; A cap member having a stopper inserted into the rotation hole to cover a partial angle range; An adjustment hole formed to reach the rotation hole at the side of the housing; Inserted into the adjustment hole to limit the rotation angle of the stopper, but the length is adjusted to include a control member for adjusting the rotation range.

According to the present invention, by setting the rotation angle of the valve switch rotation part can prevent the deformation of the rotation angle that can occur due to the inflow of unstable pressure when adjusting the existing rotation angle and can be precisely controlled.

In addition, the user can directly supply the fluid or gas as desired through the valve by controlling the opening and closing degree of the valve by directly adjusting the rotation angle of the valve switch.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 to 5, an embodiment of the present invention includes a housing 10 formed to penetrate a cylindrical through hole 11, and a rotating part 20 installed to rotate in the center of the through hole 11. And a plurality of piston parts 30 which are opened or retracted from each other in the through hole 11 by the rotation of the rotating part 20, a plurality of finishing parts 40 closing both ends of the through hole 11, It includes a pressure hole 12 formed to penetrate the through-hole 11 of the housing 10.

Here, the housing 10 is preferably made of a hard synthetic resin material or a metal material such as aluminum to withstand a predetermined pressure. In addition, the pressure hole 12 is connected to the through hole 11 and the pressure pipe 100 is connected to the pressure hole 12 to inject pressure into the housing 10.

At this time, the plurality of piston parts 30 are opened by the pressure supplied from the pressure pipe 100 to rotate the rotating part 20. Therefore, the valve member 200 connected to the rotating unit 20 may be rotated while being installed inside the tube (not shown) to transfer or stop the fluid or gas introduced into the tube by opening or closing the tube.

The rotating unit 20 includes a rotating shaft 21, an insertion protrusion 22 formed below the rotating shaft 21, a rotating member 24 formed with an insertion hole 23 to be inserted into the rotating shaft 21, and an insertion. A plurality of outer grooves formed on the inner circumferential surface of the hole 23 and inserted into and coupled to the insertion protrusion 22, and formed on both sides of the rotating member 24 to be connected to the plurality of piston parts 30. And a coupling means formed at a lower portion of the rotating shaft 21 and coupled to the valve member 200.

At this time, the coupling means has a coupling protrusion 27 is formed in the lower portion of the rotating shaft 21, the valve member 200 is formed with a groove 201 through which the coupling protrusion 27 is inserted. In addition, the coupling protrusion 27 is formed in a quadrangular shape as shown in the drawings, the groove 201 is a quadrangular quadrangular or double quadrangles to be inserted even when the coupling protrusion 27 is rotated at an angle. Shape grooves are formed in a duplicate star shape, in which case the coupling protrusion is formed on the valve member 200 and the grooves are formed on the rotating shaft 21 and are the same.

Meanwhile, a plurality of insertion protrusions 22 and protrusion holes 25 are formed to correspond to each other. When the plurality of piston parts 30 are opened by the pressure supplied to the inside of the housing 10, the rotating member 24 is rotated while the rotating member 24 is rotated, and the valve member ( 200 is rotated to open or close the flow of fluid inside the tube.

In addition, a seal 28 may be installed between the rotary shaft 21 and the upper hole 13 to prevent the pressure from flowing out. In addition, the bushing member 29 is inserted into the rotation shaft 21 to reduce the friction generated by the rotation to prevent wear and eventually the piston portion 30 on both sides to be smoothly closed or spread without friction.

In addition, the piston part 30 is installed through the piston member 31, the rod 32 protruding vertically from one side eccentrically from the center of the piston member 31, the rod 32, and the rotating part 20. The hinge shaft 33 whose position is changed according to the rotation of the stopper 34 and the stopper 34 formed on the rod 32 to be in contact with the rotating part 20 is suppressed.

Here, the piston member 31 may be formed in a disc shape so as to correspond to the inner circumferential surface of the through hole 11 of the housing 10, the piston member 31 has one or more O-rings 35 to prevent the loss of pressure Can be fitted.

In addition, the hinge shaft 33 is disposed in a state of being inserted into the outer groove 26 of the rotating unit 20. At this time, when the movement of the piston member 31 is generated, the hinge shaft 33 pushes or pulls the outer groove 26 so that the rotating member 24 is reversely rotated, the rotating shaft 21 can be rotated.

In addition, the stopper 34 may be formed on one side of the rod 32 in an arc shape or a straight shape as shown in the figure. That is, when the piston member 31 is moved to the inside of the housing 10, the arc-shaped stopper 34 may be stopped while contacting the rotating shaft 21.

The finishing part 40 includes a finishing member 41 coupled to the through hole 11 of the housing 10, and a bolt member 43 fixing the finishing member 41 to the housing 10. It may be, the compression spring 42 is installed on the inner side of the closing member 41 to elastically support the piston unit 30 may be optionally added.

Here, when the closing member 41 is fixed to the both sides of the housing 10 by using the bolt member 43, the compression spring 42 installed inside the closing member 41 is the rear of the piston member 31 Elastic support.

That is, when pressure flows into the housing 10 through the pressure hole 12, the piston member 31 opens outward so that the valve rotates in one direction, and when the inflow of the pressure is released, the compression spring 42 enters the compression spring 42. By the piston member 31 is smoothly retracted by the valve is to rotate in the opposite direction.

However, the structure of the compression spring is not necessarily essential, and can be replaced by adjusting the direction of the pressure flowing into the housing.

4 and 5, a plurality of pressure holes are provided, some of which are formed in the through holes so as to induce pressure between the piston members, which are the center of the housing, through the pressure holes 12. When the pressure is introduced, the piston member 31 is opened to the outside to rotate the valve in one direction (FIG. 4), and the other part passes through the surface of the housing to induce pressure into the housing from the closing member 41 side. When the pressure is introduced into the housing 10 through the pressure hole 12 is formed so that the piston member 31 is retracted inward to rotate the valve in the opposite direction (Fig. 5).

Therefore, the valve can be selectively opened and closed by selecting and applying pressure to the pressure hole that applies pressure corresponding to the through hole directed toward the inner side of the housing or the closing member.

As such, the present invention can precisely control the valve member 200 by supplying pressure to the inside of the housing 10 using gas or fluid.

On the other hand, as shown in Figure 6 to 9, another embodiment of the present invention further comprises a rotation angle adjustment unit 50 for limiting the rotation angle of the rotating unit 20 is protruded and rotated on the upper portion of the housing 10 It may include.

Here, since the rotation angle of the rotation unit 20 can be limited by using the rotation angle adjusting unit 50, the fluid or gas can be supplied through the valve as much as desired by controlling the opening and closing degree of the valve according to the user's intention. do.

In addition, the rotation angle adjusting unit 50 includes a rotating hole 51 formed in the upper portion of the housing 10, an arc member 52 inserted into the rotating hole 51 and disposed outside the rotating part 20. , A cap member 53 inserted into the rotation hole 51 and having a stopper 54 corresponding to both ends of the arc member 52, and having an upper end 55 formed to protrude from the upper end of the rotation part 20. And, an adjustment hole 56 formed to penetrate the rotating hole 51 at the rear of the housing 10, an arc member hole 58 formed in the arc member 52 in communication with the adjustment hole 56, and It may be configured to include an adjustment member 57 is inserted into the hole 56 and the arc member hole 58 to limit the rotation of the stopper 54.

Here, the stopper 54 may be limited in rotation by the shape of the arc by the arc member 52 inserted into the rotation hole 51. At this time, if the arc of the circular arc member 52 is about 180 degrees, the stopper 54 may be limited in rotation by about 180 degrees. Therefore, if the user arbitrarily sets the arc angle of the arc member 52 to manufacture, the rotating unit 20 may be rotated as much as the intention of the user.

In addition, the adjusting member 57 may be implemented as a bolt member, and the adjusting hole 56 may be implemented as a screw hole. Therefore, the adjustment member 57 is screwed into the adjustment hole 56 and inserted into the circular arc member hole 58 can be moved forward and backward in a horizontal state disposed to penetrate the rotating hole 51 to maintain a fixed state. .

At this time, the adjusting member 57, the adjusting hole 56 and the arc member hole 58 is preferably implemented in plurality. That is, a plurality of arc member holes 58 are formed symmetrically at both ends of the arc member 52, and a plurality of adjustment holes 56 are formed at the position of the housing 10 corresponding to the arc member holes 58. In addition, a plurality of adjusting members 57 may be provided to be inserted into the plurality of adjusting holes 56 and the arc member holes 58 at the same time.

Therefore, the stopper 54 is in contact with the end of the adjusting member 57 which is screwed to the arc member hole 58 so that the rotation angle can be more narrowly limited, the rotating portion 20 is more as the user intended Can be rotated precisely.

In the above, the Example of this invention was described. The technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive, the scope of the invention being indicated by the following claims rather than the foregoing description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

1 is a perspective view of a valve actuator according to an embodiment of the present invention.

2 is an exploded perspective view of FIG.

3 is an exploded perspective view illustrating the main portion of FIG. 2 in an enlarged manner;

Figure 4 is a view of the open state of the piston of the present invention.

5 is a view of a state in which the piston of the present invention retracted.

6 is a perspective view of a valve actuator according to another embodiment of the present invention.

7 is an exploded perspective view of FIG. 6;

8 is a view showing a state in which the main portion of FIG.

9 is a view showing another embodiment of FIG.

<Description of Symbols for Major Parts of Drawings>

10: housing

20: rotating part

30: piston part

40: finish

50: rotation angle control unit

Claims (6)

In the valve switchgear, A housing 10 formed to penetrate the cylindrical through hole 11; A rotating part 20 installed to rotate in the center of the through hole 11; A plurality of piston parts 30 which are opened or retracted from each other in the through hole 11 by the rotation of the rotary part 20; A plurality of finishing parts 40 closing both ends of the through hole 11; And a pressure hole (12) formed to penetrate the through hole (11) of the housing (10). The method of claim 1, The rotating unit 20 A rotating shaft 21; An insertion protrusion 22 formed below the rotation shaft 21; A rotating member 24 having an insertion hole 23 formed to be inserted into the rotating shaft 21; A protrusion hole 25 formed on an inner circumferential surface of the insertion hole 23 and inserted into and coupled to the insertion protrusion 22; A plurality of outer grooves 26 formed at both sides of the rotating member 24 and connected to the plurality of piston parts 30; A valve switch comprising a coupling protrusion (27) formed on an upper portion of the rotating shaft (21) and coupled to the valve member (200). The method of claim 1, The piston part 30 Piston member 31; A plurality of rods 32 spaced apart at set intervals on the outside of the front surface of the piston member 31; A hinge shaft 33 installed between the plurality of rods 32 and connected to the rotation unit 20; And a stopper (34) formed in the rod (32) to be fixed to the rotating part (20). The method of claim 1, The finish portion 40 is A closing member 41 coupled to the through hole 11 of the housing 10; A compression spring (42) installed inside the finishing member (41) to elastically support the piston unit (30); And a bolt member (43) for fixing the closing member (41) to the housing (10). The method of claim 1, Valve opening and closing further comprising a rotation angle adjustment unit for limiting the rotation angle of the rotating part 20 is protruded and rotated on the upper portion of the housing (10). The method of claim 5, wherein The rotation angle adjustment unit 50 A rotation hole 51 formed on an upper portion of the housing 10; A cap member 53 formed with a stopper 54 inserted into the rotation hole 51 to cover a partial angle range; An adjustment hole 56 formed to reach the rotation hole 51 at the side of the housing 10; Is inserted into the control hole 56, the valve opening and closing valve including a control member 57 for limiting the rotation angle of the stopper 54, the length of which is adjusted while the rotation range is adjusted.

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