JPS6088296A - Steam trap - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steam trap used as a drain for steam piping, etc., and more particularly to a steam trap of the type operated by a valve body by a downward packet or float built into the main body.

Conventional 2 For example, the downward packet type steam trap is
As shown in the figure, a valve seat 3 is provided on a lid 2 that covers the upper open surface of the main body l, and a lever 4 is attached to the lever 4 so as to be freely rotatable with a pin 5, and a downward packet 6 is attached to the tip of the lever 4, and the pin A valve body 7 is attached near the valve 5. When the drain flows into the main body l from the inlet 8 and the downward packet 6 is deeply immersed in the drain and loses its buoyancy, it descends to separate the valve body 7 from the valve seat 3 and discharge the drain from the outlet 9. Also, when steam flows in and accumulates in the downward packet 6 and gains buoyancy, it rises and pushes against the valve body 7.
I sat on valve seat 3 and looked at it.

When steam flows in or water hammer occurs when drain flows in, the downward packet 6 rises instantaneously, but the downward packet 6 and the valve body 7 are connected to one lever 4.
Since the valve body 7 is attached to and moves together with the valve FIF 53, the valve body 7 is impulsively seated on the valve FIF 53, and this causes significant wear or deformation of these contact surfaces, causing leakage. The lever also has to be made with high strength to withstand shock (ha).

In the case of a float-type steam trap, the downward and upward movement is the opposite of that of the downward packet, so if the valve seat is set upward, the valve element facing downward opens and closes, but the valve element and float are attached to the same lever. The same problem as mentioned above cannot be avoided.

The present invention solves these problems individually and allows downward packets or floats to rise or fall instantaneously.1. The purpose of the present invention is to provide a steam trap that ensures reliable valve closing and long-term durability without causing the valve body to impactly sit on the valve seat.

That is, the present invention aims to achieve this objective.

In a steam trap in which the valve body is operated by a downward packet or a float built into the main body, two levers are rotatably supported in the bottle 17, and a heavy bell that operates in the valve body and valve closing direction is provided on the lever of the cylinder. and a downward packet or float is attached to the second lever, and when the valve is opened, the second lever rotates the first lever to separate the valve body from the valve seat, The present invention is characterized in that the weight rotates the first lever to seat the valve body on the valve seat when the valve is closed.

Next, specific examples of the present invention will be explained with reference to the drawings.

In FIG. 2, a lid 14 is attached to cover the upper open surface of the main body 13 having an inlet 011 and an outlet 012, and the lid 14 has an outlet passage 15 leading to the outlet 12 and a downward valve seat 16. A hanger 17 is attached thereto. The main body 13 has an inlet passage 19 leading from the inlet 011 to a nozzle 18 projecting from the center of the bottom;
A strainer 20 is inserted into this inlet passage 19.

In addition, a downward bucket 22 having an annular weight 21 on the lower edge
is built into the main body 13, and a bucket hanger 23 is attached to the center of the top of the downward packet 22.

Two levers 24 and 25 are supported on the hanger 17 by a bottle 26 so as to be freely rotatable and arranged vertically, and the first lever 24 has a valve body 27 and a weight 28 facing upward with the bottle 26 in between. At the same time, a bucket hanger 23 is attached to the second lever 25 in a hanging state by the bin 2g. The first lever 24 has a moment due to the action of the weight 28 to seat the valve body 27 on the valve seat 16 with an appropriate contact pressure, and the bent end portion 24a on the valve body side is located at the center of the second lever 25. Locking hole 2 formed in the
5m, and the valve body 27 loosely passes through the second lever 25.

In this specific example of such a configuration, the drain is connected to the inlet I.
Entrance passage 19 from J. When flowing into the main body 13 through the nozzle 18, the downward vacuot 22 loses its buoyancy and descends as it becomes deeper immersed in the drain. At this time, the second lever 25 rotates clockwise in FIG. 2.3 and locks into the locking hole 2!
The edge 25b of 4 contacts the lower first lever 24 to press and rotate the first lever 24 clockwise, and the valve body 27 is separated from the valve seat 16 to direct the drain from the outlet passage 15. It flows out to the outlet 12.

When steam flows in from the inlet 11, this steam accumulates inside the downward pack 22 and provides buoyancy.

The second lever 25 rotates counterclockwise and stops when the bucket hanger 23 hits the lid 14.

At this time, the first lever 24 is no longer pressed by the second lever 25, and is rotated counterclockwise by the action of the weight 28 regardless of the second lever 25, thereby moving the valve body 27 toward the valve seat 16.
The person is seated in the seat.

FIG. 5 shows a different embodiment of the present invention, in which the entrance 31
An upwardly directed valve seat 36 is provided in the outlet passage 35 of the main body 33 having an outlet 32, and two levers 44 and 45 are provided in a bottle holder 37 formed on the side of the valve seat 36 and are rotated by the bottle 46, respectively. Freely movable and supported vertically.

The first lever 44 has a downwardly directed valve body 47 on one side of the bin 46.
and a weight 48 are attached.

A float 42 is attached to the second lever 45 by a pin 49. The first lever 44 has a moment force that causes the valve body 47 to be seated on the valve seat 36 with an appropriate contact pressure due to the action of a weight 48, and the valve body 47 is moved toward the second lever 45.
It passes through loosely.

In this specific example of such a configuration, the drain is connected to O:
When the water flows into the main body 33 from the bottom, the float 42 rises due to buoyancy, and the second lever 45 rotates counterclockwise in the figure, and its surface contacts the tip edge of the first lever 44, causing the second lever 45 to move upward. 44 is also pressed and rotated counterclockwise.

The valve body 47 is separated from the valve seat 36 and exits the drain 1] 32
It is intended to cause the flow of water to

When steam flows in from the inlet 31, the float 42 descends and the second lever 45 is turned clockwise! IJl.

At this time, the first lever 44 is no longer suppressed by the second lever 45tC, and rotates clockwise due to the gravity of the weight 48 and the valve body 47 regardless of the second lever 45. It is seated on the valve seat 36.

As described above, according to the present invention, the float or downward packet and the valve body are provided on separate levers, and the first lever, which looks into the valve body, is operated by the second lever to which the float or the downward bucket is attached. The valve is rotated in the valve opening direction, but when the valve is closed, even if the second lever momentarily rotates, the first lever is rotated in the valve closing direction by the action of the weight regardless of this, so it is 1M.
Not only does the valve body not sit forcefully on the valve seat even when a quarter hammer occurs, as well as when airflow occurs, but when it is seated, the action of the weight keeps the valve closed in a stable manner. be. Therefore, the contact surface between the valve body and the valve seat does not wear or deform significantly, so that the valve always closes reliably and does not lose its long-term durability. Furthermore, it is necessary to provide the lever with high strength and rigidity. It exhibits the effect that there is no damage.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of a conventional example, FIG. 2 is an f& sectional view of a specific example of the present invention, FIG. 8 is an enlarged front view with a part of the lever section cut away, and FIG. 4 is a plan view thereof. FIG. 5 is a vertical sectional view of another specific example of the present invention. 11.31...Entrance, 12.32...
・Out” + 13,3: U... Body, +6.A
6...valve seat, 22...downward bucket),
24.44...First lever 12r1.45
...Second lever, 25.46...Bin, 27.47...Valve body, 28.48...
... Weight system 1 commercial 5th gang

Claims (1)

[Claims] In a steam trap that operates as a valve body using a downward packet or float built into the main body, two levers are rotatably supported on a pin, and the first lever is equipped with a valve body and a weight that acts in the valve closing direction. and a downward packet or float is peeked through a second lever, and when the valve is opened, the second lever rotates the first lever to separate the valve body from the valve seat. . A steam trap characterized in that the weight rotates the first lever and seats the valve body on the valve seat when the steam trap is closed and raised.