JPS5825190Y2 - Opening adjustment device for fluid flow control device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an opening adjustment device for a fluid flow rate adjustment device.

BACKGROUND ART Hitherto, as means for regulating the flow rate of fluid, dampers in various industrial combustion furnaces, dampers in -2 ventilation facilities, valves in piping, etc., have been known.

However, as seen in the heating furnace damper opening adjustment device,
The on-site manual gas flow rate adjustment device can only adjust the opening by about 5φ per scale.

Therefore, if fine adjustment is required, the number of graduations on the fixed plate must be increased; for example, to obtain an opening degree of 1φ, it is necessary to drill 100 holes in the fixed plate.

However, in reality, this is not possible due to restrictions on the size, strength, etc. of the fixing plate.

As a prior art, Japanese Patent Laid-Open No. 53-140630 discloses an opening adjusting device that allows fine adjustment of about 1φ.

In this invention, a plurality of small holes are provided at different pitches on both the fixed plate and the operation plate, and by appropriately selecting the combination position of these small holes, it is possible to adjust the opening degree in units of 1 pitch more finely than in the conventional method. It is a device.

However, although this device allows fine adjustment of the opening degree for each section, it has the disadvantage that smooth stepless adjustment is not possible because each manufacturer uses a circular small hole.

In recent years, the need for energy conservation by controlling the amount of combustion air in industrial combustion furnaces has been emphasized, and in view of the fact that detailed combustion management is required, this invention solves the above-mentioned inconveniences and has been developed with a single operation. An object of the present invention is to provide a device that can smoothly and steplessly adjust the opening of a fluid flow rate adjusting device.

That is, in the present invention, the operating rod 2 is rotatably attached to a fixed plate 1, several long grooves 3 are formed in the fixed plate, and a rotation center shaft 4 passing through the end position of each long groove is provided. radial line t
1. Each long groove is positioned so that t2... passes inside another long groove adjacent to the long groove, and a long hole 5 is bored at a position above the operating rod that overlaps with the long groove of the fixed plate. A fastener 6 for tightening the operating rod is inserted between the elongated groove and the elongated hole, and a connecting tool 9 is interposed between the operating rod 8 attached to interlock with the fluid flow rate regulating device 7 and the operating rod. This is an opening adjustment device for a fluid flow rate adjustment device.

In addition, in the figure, 10 is the opening pointer, 11 is the opening scale, and 1
2 is a chimney, 13 is a convection heating tube, 14 is a combustion chamber, 15 is a viewing window, and 16 is a burner.

To explain the present invention with drawings, the fixing plate 1 and the operating rod 2
The shape of is not limited to that shown in the drawings, but can be arbitrarily determined depending on the opening adjustment range.

The one shown in Figure 3 has an opening adjustment range of 90 degrees.
The current opening degree is 27 degrees.

The fixed plate 1 is usually used in a fixed state, and the operating rod 2 is stacked above or below the iron plate, preferably on the upper side, and fixed at the rotation center of the operating rod, that is, the rotation center axis 4.

In this case, the operating rod is mounted rotatably.

Furthermore, the material and two dimensions of the fixing plate and the operating rod are appropriately selected in consideration of the target device.

Next, the long groove 3 formed in the fixed plate is positioned so that the radial straight lines t1, 4, .

Therefore, when the fastener 6 moves within each long groove during opening adjustment and comes into contact with the end of the long groove and stops moving,
It will continue to move to the adjacent long groove, but at this time, the position of the fastener before and after the movement is in a radial straight line 4tly...
・This means that even if the fastener moves to the next long groove, it can move continuously with the final position of the long groove before moving, allowing smooth stepless opening adjustment. becomes.

Further, in the embodiment shown in FIG. 3, the long grooves are tilted to the left of the radial line, but the same effect can be obtained even if the long grooves are tilted to the right.

Further, the number of long grooves can be increased or decreased as necessary, but it is preferable to set the number to about 3 to 7.

In this case, adjusting the opening degree is not troublesome, and even if the wing nut of the fastener should become loose, the fastener will stop at one end of the long groove and the rotation angle of the operating rod will be regulated, allowing fluid flow rate. Since the adjustment device does not make extreme changes inadvertently, safety can be ensured in an emergency.

If one arc-shaped long groove is formed in the fixed plate, there is a high risk that the flow rate regulating device will change from fully open to fully closed or vice versa in an emergency as described above.

An operating rod 8 is attached to the fluid flow regulating device T such as a damper or a valve in an interlocking relationship, and the operating rod 8 is connected to the operating rod 2 via a connector 9 such as a wire.

The material of the actuating rod may be the same as that of the fixed plate and the operating rod.

Here, the method of operating the device of the present invention will be explained with reference to FIG. When the fluid flow rate adjusting device is moved, the opening degree of the fluid flow rate adjusting device is adjusted to the same opening degree as the opening degree scale 11 through the connecting fittings 9 locked on both ends of the operating rod and further through the actuating rod 8.

In addition, if you want to maintain that state for a predetermined period of time after determining the opening degree, you can fix it by tightening the wing nut of the fastener 6 inserted between the long hole of the operating rod and the long groove of the fixing plate. good.

The device of the present invention uses a fixed plate and an operating rod, and the opening of the flow rate regulating device is adjusted by a combination of long grooves and long holes, so the mechanism is simple and easy to operate.

In addition, by sequentially moving the fastener along the adjacent long grooves, smooth stepless adjustment can be made, and even if the fastener's wing nut becomes loose, the fastener will not be inserted. Since the fastener moves only within the range of the long groove in which it is located, there is an excellent safety effect in that the opening degree of the flow rate regulating device does not change drastically.

Therefore, for example, when using this device to operate a damper, it is easy to adjust the oxygen content in the exhaust gas to the target value, and by strictly controlling the amount of combustion air, it is possible to reduce the fuel consumption rate. .

Therefore, by combining the device of the present invention with flow rate regulating devices for various fluids such as gas and liquid, these devices can be operated with high precision.

In particular, it can be effectively used for various industrial combustion furnace dampers, ventilation control devices, etc.

[Brief explanation of drawings]

Figure 1 is a longitudinal sectional view of a heating furnace to which the present invention is applied, Figure 2 is a front view of a conventional appliance, Figure 3 is a front view of the appliance of the present invention, and Figure 4 is a front view of the appliance of the present invention.
The figure is an exploded perspective view. 1... Fixed plate, 2... Operating rod, 3...
...Long groove, 4...Rotation center axis, 4tlx.
... Radial straight line, 5 ... Long hole, 6 ...
...Tightening tool, 7...Fluid flow rate adjustment device, 8...
...Operating rod, 9...Connection tool.

Claims (1)

[Claims for Utility Model Registration] 1) The operating rod 2 is rotatably attached to a fixed plate 1, several long grooves 3 are formed in the fixed plate, and rotation passes through the end position of each long groove. Radiation straight line from central axis 4 tt t 4...
Each long groove is positioned so that the long groove passes inside another long groove adjacent to the long groove, and a long hole 5 is bored above the operating rod where it overlaps with the long groove of the fixing plate, and the fixing plate and the operating rod are connected to each other. A fastener 6 for tightening the fluid is inserted between the long groove and the long hole, and a connecting tool 9 is interposed between the operating rod 8 and the operating rod, which are attached to interlock with the fluid flow rate regulating device 7. Opening adjustment device for flow rate regulator. 2) The device according to claim 1, which is a registered utility model, in which an opening pointer 10 is provided on the operating rod 2 and an opening scale 11 is displayed on the fixed plate 1. 3) The device according to claim 1, wherein the fluid flow rate regulating device 7 is a damper.