KR100385737B1 - A valve for controlling a fluid - Google Patents

Abstract

The present invention relates to a valve for controlling a fluid, the valve (1) is formed symmetrically and the outer body (2) which is connected to the pipe in a state in which the fluid can be moved therein, and the outer body (2) The inner body 4 is fixedly installed at a predetermined interval to form a flow path 3 through which the fluid can pass, and the inner body 4 of the outer body 2 is vertically installed to control the fluid by rotation. In addition, the pinion (5) is installed at the lower portion of the rotary shaft 6 and the inner body (4) is installed in the horizontal direction to open and close the flow path (3) by the forward and backward and the pinion ( The piston (8) having a rack (7) meshed with 5) and the sleeve (9) formed inside the outer body (2) can be contacted or dropped while being coupled to the other end of the piston (8) and moved forward and backward. Hemispherical valve seat 10 and the upper part of the rotating shaft 6 Actuator 11 is installed in the actuator to be able to control the flow of the fluid flowing inside the pipe by rotating the rotary shaft (6) forward and backward, can be opened and closed with a small force because it is not subjected to the static pressure of the fluid, the flow path inside the valve Because of its streamlined shape on one axis, vibration and noise due to the flow of fluid can be reduced, and precise control of the fluid is enabled.

Description

A valve for controlling a fluid

The present invention relates to a valve, and more particularly, to a fluid control valve that can be easily opened and closed with a small force, while reducing the manufacturing cost by reducing vibration and noise during the flow of a fluid.

In general, a valve is a device for controlling the inflow, outflow, and control of a gas or liquid flowing in a pipe, and the valve is usually installed between the pipe and the pipe or at a predetermined position of the pipe to be opened and closed by electronic control or mechanical operation. By doing so, it is possible to control the flow of fluid.

In addition, the valve is usually made of bronze to withstand the pressure of the fluid, but in recent years is made of a variety of metals, bellows, balls and springs are used to open and close the valve according to the purpose It is produced in various forms.

That is, as shown in FIG. 1, the general structure of the valve is directly connected to the pipe, and the valve body 101 having various parts embedded therein is formed in a predetermined shape, and the center of the valve body 101 is provided. The rod 102 is installed in the vertical direction so as to be movable up and down, and a trim 104 which is in contact with the valve seat 103 formed at the central portion of the valve body 101 is provided at the lower end of the rod 102. It is fixedly installed, and the handle 105 is installed on the upper portion of the rod 102 so that the rod 102 can be raised or lowered by the rotation of the handle 105.

Therefore, when the trim 104 contacts the valve seat 103 by rotating the handle 105 and lowering the rod 102, the valve 106 is locked and rotates the handle 105 in reverse. The valve 106 is opened when the trim 104 is separated from the valve seat 103 by raising the rod 102.

However, in the case of the valve 106, when the hydraulic pressure is large, the opening and closing operation of the valve 106 is not smooth, causing inconvenience in use, and when the fluid flows through the valve 106, the valve 106 may be caused by rapid turbulence. Vibration and noise are not only severely generated, but also the durability of the valve 106 itself is lowered, and the trim 104 which is in contact with the valve seat 103 is often tightened with too much force. There were various problems such as leakage of fluid due to breakage of 103 or trim 104.

Accordingly, the present invention has been devised to solve the above problems, and can be easily opened and closed with a small force, and by reducing the vibration and noise during the flow of the fluid, the fluid can be used more conveniently while lowering the manufacturing cost. The purpose is to provide a control valve.

The present invention for achieving the object of the above is formed in the left and right symmetrical and the outer body is connected to the tube installed in a state in which the fluid can be moved therein, and fixedly installed at a predetermined interval inside the outer body An inner body forming a flow path through which the fluid can pass, a rotation axis installed vertically in the inner central portion of the outer body to control the fluid by rotation, and a pinion installed at the bottom thereof, and a horizontal inside the inner body The piston is installed in the direction to open and close the flow path by forward and backward, and a rack having a rack engaged with the pinion at the front end thereof, and coupled to the other front end of the piston to be moved forward and backward to contact the sleeve formed inside the outer body; Hemispherical valve seat, which can be dropped, and a plug which smoothly flows fluid, By normal and reverse rotation axis is a structure consisting of an actuator to control the flow rate of the fluid flowing through the inner tube.

Then, the drag element is filled in the flow path between the outer body and the inner body so that the fluid passing through the flow path can be controlled by the flow through the drag element.

In addition, the sleeve seated on the valve seat is mounted in a state in which a plurality of grooves are formed at the rear end thereof so that fluid can pass through the groove.

Meanwhile, as another embodiment of the plug, a plug is formed at the front of the piston, and a plurality of V grooves are formed in the radiation direction about the center of the plug to allow fluid to pass through the V grooves.

That is, the fluid control valve having the above structure is to be able to open and close the flow path by the forward and reverse rotation of the rotating shaft by the operation of the actuator bar, the piston by pushing the rack formed on the piston while the pinion installed on the rotating shaft is rotated The valve seat mounted on one side of the piston is moved forward or backward and thus seated on the sleeve so that the flow path can be opened by blocking the flow path or moving backward from the sleeve.

Therefore, the valve has the advantage of being able to open and close with a small force because the shape is symmetrical and does not receive the static pressure of the fluid, and the flow path inside the valve is streamlined on one axis line and the change of the cross-sectional area is small. Therefore, vibration and noise due to the flow of the fluid can be reduced, and the work efficiency of the valve can be increased because the fluid can be precisely controlled by the sleeve and the plug.

1 is a cross-sectional view showing the internal structure of a conventional valve according to the prior art,

2 is a state diagram showing the internal structure of the valve for fluid control according to the present invention;

3 is a cross-sectional view showing a state in which the valve for fluid control in accordance with the present invention is closed;

4 is a cross-sectional view showing another embodiment of a valve for fluid control according to the present invention;

5 is a perspective view showing a sleeve of the valve for fluid control according to the present invention;

6 is a perspective view showing a plug of the valve for fluid control according to the present invention;

7 is a perspective view showing another embodiment of a piston according to the present invention.

Explanation of symbols on the main parts of the drawings

1: valve 2: outer body

3: Euro 4: inner body

5: pinion 6: rotation axis

7: rack 8: piston

9: sleeve 10: valve seat

11: Actuator 12: Drag Element

13: groove 14: plug

15: V groove 16: Internal piston

17: bellows

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

Figure 2 is a state diagram showing the internal structure of the fluid control valve according to the invention, Figure 3 is a cross-sectional view showing a closed state of the fluid control valve according to the invention, Figure 4 is a view of the fluid control valve according to the invention Another embodiment is a cross-sectional view, Figure 5 is a perspective view showing a sleeve of the fluid control valve according to the invention, Figure 6 is a perspective view showing a plug.

Referring to the structure of the present invention by the above drawings, a valve (1) is provided to control the flow rate of the fluid passing through the pipe, the valve (1) is formed symmetrically to move the fluid therein An outer body (2) that is connected to the tube in a possible state, and the inner body (4) fixedly installed at a predetermined interval inside the outer body (2), and the shaft rotation through the support shaft (2a) It is installed to be possible and one side is exposed to the inside of the inner body (4) and the pinion (5) is installed in the exposed portion and the horizontal axis in the inner direction of the inner body (4) is installed in the horizontal direction The piston 8 having the rack 7 formed therein at the distal end thereof by opening and closing the flow path 3, and being coupled to the other distal end of the piston 8 to move forward and backward, the outer body Hemispherical shaped to be able to contact or fall off the sleeve 9 formed inside of (2) Actuator 10 is installed on the seat 10, the plug 14 for smoothing the flow of the fluid, the upper portion of the rotary shaft 6 and the reverse rotation of the rotary shaft 6 to control the flow rate of the fluid flowing inside the pipe ( 11).

Here, the characteristic of the valve (1) has a dual structure in which the body is divided into an outer body (2) and the inner body (4) to form a flow path (3), in the case of the valve (1) in the horizontal direction It is designed to be symmetrically shaped so that the fluid is not subjected to static pressure, and the rotary shaft 6 and the piston 8 for opening and closing the flow path 3 are structured in which the pinion 5 is engaged with the rack 7, respectively. It is to be able to convert the rotational movement of (6) to a linear movement through the piston (8).

That is, the fluid control valve (1) having the above structure is to be able to open and close the flow path (3) by rotating the rotating shaft 6 forward and reverse by the operation of the actuator 11, the rotary shaft (6) The piston 8 is moved forward or backward by pushing the rack 7 formed on the piston 8 while the installed pinion 5 rotates, and thus the valve seat 10 mounted on one side of the piston 8. By advancing and seated in the sleeve 9, the flow path 3 can be opened or closed by blocking the flow path 3 or falling back from the sleeve 9.

In addition, the valve 1 may be applied as a control valve 1 that enables precise control of the flow rate of the fluid, which is illustrated in FIG. 4, wherein the outer body 2 and the inner body 4. A plurality of drag elements 12 are filled in the flow paths 3 between) so that the fluid passing through the flow paths 3 can be controlled to flow through the drag elements 12.

Therefore, it is possible to prevent damage to the valve 1 due to the sudden pressure change by the drag element 12, and to control the precise flow rate while reducing the noise.

Meanwhile, as shown in FIG. 5, a plurality of grooves 13 are formed at the front end of the sleeve 9 in contact with the valve seat 10 installed at one end of the piston 8, thereby providing the groove 13. Through the fluid will be able to pass.

That is, by allowing the fluid passing through the flow path 3 to flow through the plurality of grooves 13 formed in the sleeve 9, it is possible to satisfy the flow control characteristics required for the valve 1, the piston (8) As the valve seat 10 moves forward as it moves forward, the valve seat 10 is seated on the sleeve 9 to prevent the flow path 3.

6, the plug 14 is formed in front of the valve seat 10, and a plurality of V grooves 15 are formed in the radiation direction about the center of the plug 14. Through this V-groove 15, the fluid can pass through.

That is, in the above case, the fluid is allowed to flow through the plug 14 formed in front of the valve seat 10, because the fluid passes through the plurality of V grooves 15 formed in the plug 15. It is possible to precisely control the flow rate.

Therefore, since the valve 1 is not subjected to the static pressure of the fluid due to its shape, a large force is not required at the time of opening and closing operation so that the valve 1 can be easily operated even with the actuator 11 having a small capacity, and the entire inside of the valve 1 Since the flow path 3 is formed, it is possible to prevent accumulation and precipitation in the flow path 3.

On the other hand, in order to prevent the outflow of fluid between the piston (8) and the inner body (4), the inner piston 16 is installed in the center of the piston (8), contraction / An expandable bellows 17 is provided and it is also possible to allow the valve seat 10 and the plug 14 to be installed at the front end of the bellows 17.

When the bellows 17 is used, the piston 8 does not move, but the inner piston 16 moves back and forth, so that the bellows 17 contracts and expands, and the seatbelt 10 and the plug 14 are moved. Will open and close.

As described above, according to the fluid control valve according to the present invention, since the shape is symmetrical and does not receive the static pressure of the fluid, opening and closing is possible with a small force, and the flow path inside the valve is streamlined on one axis line. In addition, since the change of the cross-sectional area is small, the vibration and noise due to the flow of the fluid can be reduced, and the fluid can be precisely controlled by the sleeve, thereby improving the working efficiency of the valve.

Claims (4)

An outer body 2 having a flow path 3 through which fluid can be moved; An inner body 4 fixedly installed on the inner side of the outer body 2 with a support shaft 2a at a predetermined distance from the inner wall of the outer body 2; and A rotating shaft 6 installed to be rotatable through the support shaft 2a, the one side of which is exposed to the inside of the inner body 4, and the pinion 5 is installed at an exposed portion thereof; A piston (8) installed to be accessible to the inside of the inner body (4) and having a rack (7) engaged with the pinion (5) on one side; and A valve seat (10) installed at the other end of the piston (8) to open and close the flow path of the outer body (2); And A plug 14 formed in a hemispherical shape at the tip of the valve seat 10; And an actuator (11) for axially rotating the rotary shaft (6) in the forward and reverse directions. 2. A plurality of drag elements 12 are filled in the flow path 3 between the outer body 2 and the inner body 4 so that the fluid passing through the flow path 3 passes through the drag element 12. Fluid control valve, characterized in that the flow control. 2. The fluid control valve according to claim 1, wherein a plurality of V grooves 15 are formed in the radiation direction about the center of the plug 14 so that fluid can pass through the V grooves 15. . 2. The bellows (17) according to claim 1, wherein an inner piston (16) is installed at the center of the piston (8), and a bellows (17) capable of contraction / expansion is provided at the tip of the inner piston (16). A valve for fluid control, characterized in that the valve seat 10 and the plug 14 is installed at the front end.