KR200151321Y1 - Automatic air vent valve - Google Patents

Abstract

The present invention relates to an automatic air exhaust valve, which forms a guide piece on the outer circumferential surface so that the up and down movement of the rich stably prevents the leakage of fluid and at the same time improves the durability of the parts, and shuts off the outside air on the bottom of the rich In order to provide an automatic air exhaust valve which prevents outside air from flowing into the pipe by forming a member, the rich body 130 embedded in the valve body 110 is moved up and down by buoyancy and the air discharge hole of the bottom of the valve cap 120 is moved. In the automatic air exhaust valve 100 for discharging the air in the pipe to the outside by opening and closing 122d, on the outer peripheral surface of the rich 130, a plurality of guide pieces to prevent the swing in the valve body 110 ( 132 is formed to protrude and the blocking pad 134b at the lower end of the support rod 134a to open and close the inlet hole 112a of the valve body 110 at the center of the bottom surface of the rich 130. Chakdoen is installed to protrude the outside-air shut-off member (134).

Description

Auto Air Exhaust Valve

The present invention relates to an automatic air exhaust valve, and more particularly, to form a guide piece on the outer peripheral surface of the rich, the lower air is attached to the outside air blocking member to automatically discharge the air contained in the fluid in the pipe It relates to an exhaust valve.

In general, when an air layer is formed inside a cooling / heating pipe, a smooth flow of fluid may be hindered to reduce thermal efficiency or promote corrosion. Therefore, an air exhaust valve may be installed at the upper part of the pipe or at the entrance of the fluid. To let the air out.

Such an air exhaust valve is a manual valve which turns the valve knob by hand to remove the air in the pipe, and an automatic air exhaust valve which automatically discharges air by opening and closing the valve by moving the up and down by buoyancy installed in the valve cylinder. There is a disadvantage that the manual valve is not able to discharge the air unless the user opens the valve arbitrarily, it is common to use an automatic air exhaust valve that is convenient to use and manage.

1 is an exploded perspective view illustrating a conventional automatic air exhaust valve. As shown in the drawing, the automatic air exhaust valve 10 has a cylindrical shape in which a connection portion 22 is formed at a lower end thereof so as to be fastened to a pipe, and an upper surface thereof is opened. The valve body 20 and the valve cap 30 is fastened to the upper surface opening of the valve body 20 and the air vent part 32 protrudes on the upper surface thereof, and is inserted into the valve body 20. The rich man 40 made of a floating material formed of a predetermined diameter and height moved up and down by a fluid, and the rich man 40 is made up of a rich control member 50 configured to move up and down suspended on the bottom surface of the valve cap 30 .

In addition, the air vent part 32 protrudes on the upper surface of the valve cap 30 and has an air discharge protrusion 32a in which an air discharge hole 32d having a predetermined inner diameter is drilled, and an outer circumferential surface of the air discharge protrusion 32a. It consists of an air discharge nozzle (32b) fastened to the upper, and the discharge air amount control pin (32c) to regulate the amount of air fastened to the upper portion of the air discharge projection (32a) to be discharged.

On the other hand, the bearing protrusion 42 is projected so that the lower end of the movable piece 52 is pinned at a predetermined position on the upper surface of the rich man 40, and the valve pad (on the same straight line spaced apart from the bearing protrusion 42 by a predetermined distance). The pressurizing protrusion 44 which applies a pressing force so that 56 closes the air discharge hole 32d is protruded.

In addition, the rich adjustment member 50 is fastened to the upper portion of the rich man 40, the movable piece 52 formed to be foldable, and the bottom of the valve cap 30 so that the movable piece 52 is fastened and supported Intermittent opening and closing of the air discharge hole 32d formed on the bottom surface of the valve cap 30 by moving up and down the support bracket 54 and the movable piece 52 which are fixed to the support bracket 54. It consists of a valve pad 56 and an elastic member 58 or the like.

In addition, reference numerals 70a and 70b are O-rings installed to prevent leakage of the fluid while maintaining the airtightness of the coupling portion.

The automatic air exhaust valve 10 configured as described above, as shown in FIG. 2, when the fluid is filled in the valve body 20, the rich 40 rises, and the movable piece 52 is interposed in contact with the valve pad ( 56 is to close the air discharge hole (32d) is to maintain the power failure state is not discharged to the outside, on the contrary, the air is generated and the water level is lowered, so that the rich 40 is lowered by its own weight is closed The air discharge hole 32d is opened so that the air is exhausted into the atmosphere through the open air discharge hole 32d.

However, the conventional automatic air exhaust valve 10 as described above has a large distance between the inner circumferential surface of the valve body 20 to which the rich 40 is moved and the outer circumferential surface of the rich 40, so that the eccentricity is caused by the play when the rich is moved up and down. , Or when a large air bubble is introduced and collides from the lower side, rocking is severely generated, so that the valve pad 56 cannot accurately close the air discharge hole 32d and leaks fluid, and the floating control member 50 is caused by rocking. On the other hand, there is a problem that impairs the durability of, while in the state that the fluid inside the valve body 20 is completely discharged, there is a problem that the outside air flows into the pipe 60 through the lower inlet hole (22a), In order to prevent such a problem, a method in which a shock absorbing member is interposed in the lower opening of the cylinder has been devised, such as Japanese Utility Model Publication No. 59-21176 (published date: Feb. 8, 1984). By reducing the impact force of the fluid injected into the valve, it is possible to prevent the inflow of the air generated during the up and down movement of the rich and the inflow of outside air into the pipe through the lower inlet hole while the fluid is completely discharged inside the valve body. There was no.

The present invention is devised to solve the above problems, the purpose is to form a guide piece on the outer circumferential surface to ensure the up and down movement of the rich to prevent the leakage of fluid and at the same time improve the durability of the parts, It is to provide an automatic air exhaust valve configured to form an external air blocking member on the bottom of the rich to prevent the outside air flow into the pipe.

In order to achieve the above object, the present invention provides an automatic air exhaust valve in which air in a pipe is discharged to the outside by opening and closing an air discharge hole of a valve cap bottom while the rich body embedded in the valve body moves up and down by buoyancy. On the outer peripheral surface of the rich plural guide pieces are formed to protrude so as to prevent the fluctuation in the valve body, the outer air blocking member having a blocking pad attached to the lower end of the support rod to open and close the inlet hole of the valve body in the center of the bottom of the rich It protrudes and is installed.

1 is an exploded perspective view showing a conventional automatic air exhaust valve,

2 is a cross-sectional view showing an operating state of a conventional automatic air exhaust valve,

3 is an exploded perspective view showing an automatic air exhaust valve according to the present invention,

Figure 4 is a first cross-sectional view showing an operating state according to the present invention,

5 is a second cross-sectional view showing an operating state according to the present invention,

6 is a third cross-sectional view showing an operating state according to the present invention.

* Description of the symbols for the main parts of the drawings *

100: automatic air exhaust valve, 110: valve body,

112: connection part, 112a: inlet hole,

120: valve cap, 122: air vent,

122a: air discharge protrusion, 122b: air discharge nozzle,

122c: exhaust air volume control pin, 122d: air exhaust air,

130: rich, 132: a guide,

134: air blocking member, 134a: support rod,

134b: blocking pad, 134c: first pad,

134d: second pad, 136: bearing base,

140: rich adjusting member, 142: movable flight,

144: support bracket, 146: valve pad,

148: an elastic member.

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

Figure 3 is an exploded perspective view showing an automatic air exhaust valve according to the present invention, Figure 4 is a first cross-sectional view showing an operating state according to the present invention, Figure 5 is a second cross-sectional view showing an operating state according to the present invention, Figure 6 As a third cross-sectional view showing an operating state according to the present invention, as shown in the automatic air exhaust valve 100 according to the present invention is connected to the connection portion 112 having an inlet hole (112a) at the bottom to be fastened to the pipe 60 to be connected A valve body 110 having a cylindrical shape having a predetermined inner diameter and a length), a valve cap 120 fastened to an upper portion of the valve body 110 and provided with an air vent 122 on an upper surface thereof, and The rich body 130 is formed of a predetermined diameter and a height that is inserted into the valve body 110 and is buoyant by the fluid is moved up and down by the fluid, and the rich 130 is on the bottom surface of the valve cap 120 Sub-joints configured to be fastened up and down by fastening It comprises a member (140).

On the other hand, the air vent 122 is projected on the upper surface of the valve cap 120, the air discharge protrusion 122a of the air discharge hole 122d of a predetermined inner diameter and the outer peripheral surface of the air discharge protrusion 122a Air discharge nozzle 122b fastened to the upper surface, and an air discharge amount adjusting pin 122c intermittently by controlling an amount of air discharged by being fastened to the upper air discharge hole 122a of the air discharge protrusion 122a. .

In addition, the rich adjustment member 140 is fastened to the upper portion of the rich 130, the movable piece 142 formed to be foldable, and the bottom of the valve cap 120 so that the movable piece 142 is fastened and supported. Intermittent opening and closing of the air discharge hole 122d formed on the bottom surface of the valve cap 120 by moving up and down the support bracket 144 fixed to the support piece 142 and the movable piece 142. It consists of a valve pad 146 and the elastic member 148.

In addition, the bearing protrusion 136 protrudes so that the lower end of the movable piece 142 is pinned at a predetermined position on the upper surface of the rich person 130.

In the automatic air exhaust valve 100 configured as described above, on the outer circumferential surface of the rich 130 is divided into a plurality of protrusions in a predetermined angle to prevent the swing of the rich 130 in the valve body 110 to protrude in a predetermined shape Two guide pieces 132 are formed, an outer air blocking member 134 having a support rod 134a of a predetermined length protruding from the bottom center thereof, and a blocking pad 134b having a predetermined outer diameter formed at a lower end thereof. The blocking pad 134b of the blocking member 134 is disposed on the first pad 134c having a predetermined outer diameter contacting the upper surface of the inlet hole 112a of the valve body 110 and on the upper surface of the first pad 134c. It consists of a second pad 134d protruding integrally to have a diameter slightly larger than the diameter of the inlet (112a).

On the other hand, the guide piece 132 is protruded in the longitudinal axis on the outer circumferential surface of the rich 130, but is not limited thereto, and various modifications are possible.

In addition, the coupling method of the external air blocking member 134 protruding from the bottom surface of the rich 130 is preferably fastened using interference fit, the material of the external air blocking member 134 is a support rod 134a is made of metal of corrosion resistance material The barrier pad 134b is preferably formed of a rubber material, but is not limited thereto. Various modifications are possible within the spirit and scope of the present invention.

In addition, in the configuration of the present invention as described above, reference numerals 150a and 150b are O-rings installed to prevent leakage of fluid while maintaining the airtightness of the coupling portion.

The operation of the present invention as described above is as follows.

As shown in FIG. 4, when water is filled in the inside of the valve body 110 by a predetermined level or more, the rich 130 is injured, and the movable piece 142 is folded in contact with the valve pad 146 to discharge air. Since the ball 122d is closed, the fluid is maintained in a failure state in which the fluid is not discharged to the outside. In this state, air is generated inside the pipe 60 and the automatic air exhaust valve 100 through the inlet hole 112a. When introduced into the upper layer of the pressure acts downward to lower the water level by a certain height as shown in Figure 5, wherein the rich 130 is lowered according to the water level was closing the air discharge hole (122d) Since the valve pad 146 falls, the generated air is exhausted into the atmosphere through the air discharge hole 122d and the air discharge nozzle 122b.

On the other hand, when the water level in the valve body 110 in this state is further lowered, as shown in Figure 6 the rich 130 is lowered by its own weight and the external air blocking member protruding to the bottom of the rich 130 ( The blocking pad 134b of the 134 closes the inlet hole 112a of the valve body 110. In this case, the inlet hole 112a of the valve body 110 is closed and flows back into the pipe through the air outlet hole 122d and the inside of the pipe through the inlet hole 112a. It is to act to block the air to be introduced into.

At this time, the second pad 134d protruding to a diameter slightly larger than the diameter of the inlet hole 112a on the upper surface of the first pad 134c is applied to the vacuum pressure inside the pipe connected to the automatic air exhaust valve 100. As a result, the blocking pad 134b is supported without falling into the lower inlet hole 112a or deformed in shape.

On the other hand, the upper and lower parts of the rich 130 is a plurality of guide pieces 132 protruding on the outer circumferential surface, the distance between the inner peripheral surface of the valve body 110 and the rich 130 is small, generated in the pipe When the air bubbles are large, since the air bubbles pass through the guide piece 132 of the rich 130 and are divided into air bubbles of small size, the rich 130 is stably moved without being shaken.

Therefore, since the shaking of the rich 130 is prevented, the fluctuation generated in the rich adjusting member 140 coupled thereto is reduced, which causes the valve pad 146 to accurately open and close the air discharge hole 122d. Outflow to the outside is prevented.

According to the automatic air exhaust valve according to the present invention as described above, the up and down movement of the rich is made to be stable to prevent the leakage of the fluid and at the same time improve the durability of the parts, the effect of preventing the outside air flow into the connected pipes There is.

Claims (1)

Automatic air exhaust valve 100 to allow the air in the pipe is discharged to the outside by opening and closing the air discharge hole (122d) of the bottom of the valve cap 120 while moving up and down by the buoyancy buoy 130 is embedded in the valve body 110 ), On the outer circumferential surface of the rich 130, a plurality of guide pieces 132 are formed to protrude so as to prevent shaking in the valve body 110, In the center portion of the bottom surface of the rich 130 is installed outside the air blocking member 134 is provided with a blocking pad 134b attached to the lower end of the support bar (134a) to open and close the inlet hole (112a) of the valve body 110 Auto air exhaust valve characterized in that.