JPS5913362Y2 - Pure fluid control element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a pure fluid control element with an inlet pressure control device attached to the input port of the element.

A pure fluid control element, also called a fluid valve, has a three-pronged main body 1, a supply nozzle 2, and a supply nozzle 2, as shown in FIG.
It is composed of a splitter 3 and control ports 4 and 5, and water entering the input port is discharged from the output port door or 8 by pilot operation (opening/closing) of the control ports 4 and 5.

The pure fluid control element has the following features: ■ Since there are no moving parts inside the valve body, there are almost no failures; ◎ The time required to switch the flow path to the output port by pilot operation is short; @ The amount of water flowing through the valve is the same as the valve inlet. It has major characteristics such as being determined by the valve inlet pressure rather than by the pressure difference at the outlet, so it is widely used in the cooling water supply system, for example, in the strip cooling equipment of hot strip steel finishing mills. There is.

FIG. 2 shows the supply system and strip cooling device. In order to inject water into the hot rolled product 9b on the table roller 9a from the cooling water header 10, a pure fluid control element main body 11 is incorporated in the cooling water supply system. A pressure regulating valve 20 is attached to a pipe 22 connecting this and a pump source 21.

In the figure, reference numeral 14.15 indicates a control port, 12 indicates a supply nozzle, 16 manual power ports, and 17.18 output ports.

Incidentally, the pressure regulating valve 20 is installed for the purpose of controlling the pressure of the input port 16, and its operating method may be automatic, manual, or fixed.

However, this pressure regulating valve 20 has a problem in that it requires a large installation space.

This invention provides a pure fluid control element that incorporates an inlet pressure control device in the inlet port, making the device configuration including piping compact.

The pure fluid control element of this invention has an inlet pressure control device attached to the element's inlet port, which consists of a valve body that opens and closes a flow path using an artificial nozzle as a valve seat, and an opening adjustment mechanism for this valve body. Features.

That is, to explain based on one embodiment shown in FIG.
The amount of water entering the manual port 106 is controlled by adjusting the pressure applied to the port 106.

Note that 104 and 105 indicate a control port and 103 a splitter.

The structure of the inlet pressure regulating device 125 includes a main body 125a fixedly supported by an elbow 126, a valve body 128 facing the supply nozzle 102 so as to be able to move forward and backward, and the valve body 128 being connected to the main body 125.
a, an opening adjustment screw 130 rotatably incorporated into the main body 125a, and a handle 131 for manually rotating this screw 130. The rotational movement of the screw 130 is changed into a linear movement, and the valve stem 133 and the opening adjustment screw 130
Furthermore, since the cross section of the supply nozzle 102 is rectangular in this embodiment, a guide 129 is attached to the valve stem 133 to prevent the valve body 128 from rotating. That's how it is.

In such a configuration, water entering the inlet 127 of the elbow 126 exits to the artificial port 106, passes through the gap between the supply nozzle 102 and the valve body 128, and exits to the outlet port 107 or 10.
It flows to 8.

According to this embodiment, the valve body 128 opens and closes the flow path using the supply nozzle 102 as a valve seat, and the inlet pressure of the pure fluid control element 101 can be adjusted continuously and steplessly.

In the above-described embodiment, the opening degree of the valve body 128 is manually adjusted, but a motor, a diaphragm (in this case linear movement), etc. can be used as the opening adjustment mechanism.

The cross-sectional shape of the supply nozzle of the pure fluid control element does not need to be limited to the embodiment.

As explained above, the pure fluid control element of this invention has an inlet pressure control device attached to its input port, and unlike conventional devices, the device configuration including piping is compact, making it easier to arrange the device. This has a significant practical effect in that it does not take up a large amount of space.

[Brief explanation of drawings]

Figure 1 is a schematic configuration diagram of a pure fluid control element, Figure 2 is a configuration diagram showing a cooling water supply system and cooling device incorporating this element,
FIG. 3 is a sectional view of a pure fluid control element showing an embodiment of this invention, and FIG. 4 is a sectional view taken along line IV-- in FIG. 1.11...Pure fluid control element body, 2.12.102
... Supply nozzle, 3.13.103 ... Splitter, 4.5.14゜15, 104.105 ... Control port, 6.16.106 ... Input port, 7.8.17
．． 18.107.108...Output port, 101...
・Pure fluid control element, 125... Inlet pressure adjustment device, 1
26...Elbow, 128...Valve body, 130...Screw, 131...Handle, 132...Motion conversion mechanism, 133...Valve stem.

Claims (1)

[Scope of utility model registration request] A pure fluid control element characterized in that an inlet pressure control device is attached to an input port of the element, the inlet pressure control device consisting of a valve body that opens and closes a flow path using an inlet nozzle as a valve seat, and an opening adjustment mechanism for this valve body.