JPH0410453Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to an air vent that automatically discharges air mixed in a water piping system to the outside of the system, and in particular, an air vent that is equipped with a gas-liquid separator that separates water and air. Regarding.

When air mixed in a water piping system is to be discharged to the outside of the system, an air vent is attached to the rising part of the water piping, and the air accumulated in this part is automatically discharged by the air vent.

However, with this device, the air that does not flow into the air vent but passes through the secondary side cannot be discharged to the outside of the system.

BACKGROUND TECHNOLOGY To solve this problem, there is a technique disclosed in Japanese Patent Publication No. 55-3962. This has a partition wall projecting upward from the fluid passage, and an air vent attached to the top of the partition wall.

Water mixed with air is separated by colliding with the partition wall, and the separated air is raised by the partition wall, flows into the air vent, and is automatically discharged.

Problems to be Solved by the Present Invention In this case as well, a problem arises in which the separated air flows away together with the water to the secondary side. In other words, when the flow rate is slow, the separated air rises and flows into the air vent, but when the flow rate is fast, the separated air overcomes the partition wall and gets caught up in the water flowing to the secondary side and flows away. It is.

The technical problem of the present invention is to ensure that the separated air flows into the air vent.

Means for Solving the Problems The technical means of the present invention taken to solve the above technical problems is to attach an air vent to the upper part of the casing, which has an inlet and an outlet connected to the water pipes at the lower part. An annular partition is provided in the casing to form an annular space between the partition and the casing outside the partition, the lower part of the annular space is connected to the inlet, the upper part is connected to the air vent part, and air is supplied through the hole inside the partition. The vent part and the outlet are connected, a gas-liquid separator that swirls water and separates air is placed at the bottom of the annular space, and a partition member is placed above the separator that separates the annular space into an inner space and an outer space. A passage member is provided to connect the inner space to the air vent portion, and a through hole is formed to communicate the outer space to the outlet.

Effect The operation of the above technical means is as follows.

Water flowing in from the inlet is swirled by a separator at the bottom of the casing as it passes through the annular space.
Separated into water and air by centrifugal force. Water is located on the outside of the annular space, and air is located on the inside. Water flows out from the outer space of the annular space through a passage connected to the outlet, and air flows into the air vent part through the passage in the inner space of the annular space and is discharged at the air vent. The air and water separated by the separator pass through separate spaces inside and outside the annular space, and the air flows to the air vent and the water to the outlet, so the separated air does not flow out to the outlet together with the water. .

Effect of invention The present invention produces the following specific effects.

Since the separator using swirling has good gas-liquid separation efficiency, the gas-liquid separation efficiency is improved.

Since the separated air is not caught up in water, the gas-liquid separation efficiency is improved and air can be reliably removed.

Embodiment An embodiment illustrating a specific example of the above technical means will be described (see FIGS. 1 and 2).

An upper body 2 constituting the air vent part 1 and a lower body 4 constituting the separation part 3 are joined by a flange to form a casing. An inlet 5 and an outlet 6 are formed on the same axis in the lower part of the lower body 4. A cylindrical partition member 7 and a cup-shaped float receiving member 8 are arranged in the casing to form an annular space 9.

The partition member 7 is fixed to the member forming the outlet 6, and the float receiving member 8 is attached to the upper end of the partition member 7.
The bottom wall closes the upper end opening of the partition member 7 and is fixed. The lower end of the partition wall member 7 is closed with a disc-shaped member 10. The float receiving member 8 has a through hole 11 formed at the center of the bottom wall, and through holes 12 formed at the front and opposite sides of the surrounding wall in the drawing. A partition member 13 whose lower end is widened is attached to the lower outer periphery of the float receiving member 8. Two passage members 14 and 15 are attached along the peripheral wall of the float receiving member 8. Passage member 1
The lower ends of 4 and 15 pass through the partition member 13. Therefore, the inlet 5 communicates with the outlet 6 through the outer periphery of the partition member 7, the outside of the partition member 13, the through hole 12 in the peripheral wall of the float receiving member 8, and the upper end opening, through the inside of the float receiving member 8, and the inside of the partition member 7. At the same time, the outlet 6 is passed from the outer periphery of the partition member 7, the inside of the partition member 13, and the upper ends of the passage members 14 and 15, into the float receiving member 8, and the inside of the partition member 7.
is connected to.

A cylindrical drainage member 16 with a widened upper end is attached to the outer periphery of the partition member 7. A swirling blade 17 is attached to the lower end of the draining member 16. Swivel vane 17
The projections of thin plates are arranged radially on the same circumference, and the projections are tilted in the same direction.

A lid member 19 forming an exhaust passage 18 is attached to the inside of the upper body 2. Exhaust port 20 in the upper body 2
form. The valve seat member 21 is attached so as to protrude downward from the lid member 19. The valve seat member 21 has a valve port 2.
2 is formed and communicates with the exhaust port 20 through the exhaust passage 18. A hollow spherical float 23 is housed in a float receiving member 8 in a free state. Two float seats 24 are attached to the valve seat member 21.

When water flowing out from the inlet 5 passes through the annular space 9, it is swirled by swirling vanes 17 and separated into water and air by the action of centrifugal force. Water is located outside the annular space 9, and air is located inside. The water is outside the partition member 13, through holes 12 and 1 of the float receiving member 8.
1 through the inside of the partition member 7 and flows out to the outlet 6. Air flows from inside the partition member 13 to the passage member 1
4 and 15 into the air vent part 1, and is discharged from the exhaust port 20 through the valve port 22 and the exhaust passage 18 by the floating up and down of the float 23.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an air vent equipped with a gas-liquid separator according to the present invention, and FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1... Air vent part, 3... Separation part, 5...
Inlet, 6... Outlet, 7... Partition member, 8... Float receiving member, 9... Annular space, 11, 12...
Through hole, 14, 15...passage member, 17...swivel vane, 20...exhaust port, 23...float.

Claims (1)

[Scope of utility model registration request] An air vent is attached to the top of the casing, which has an inlet and an outlet connected to the water pipes at the bottom, and an annular partition is provided inside the casing to form an annular space between the partition and the casing outside the casing. The lower part of the annular space is connected to the inlet, the upper part is connected to the air vent part, the air vent part and the outlet are connected through a hole inside the partition wall, and a gas-liquid separator is placed at the bottom of the annular space to swirl water and separate air. A partition member is arranged above the separator to separate the annular space into an inner space and an outer space, a passage member is provided to connect the inner space to the air vent part, and a through hole is formed to communicate the outer space to the outlet. Air vent with gas-liquid separator.