JPH0537112Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a flow rate regulator (regulation valve), and more specifically, it is installed before or after a water meter in water piping, and is used to control the flow rate passing through the water meter. This relates to a flow regulator that is properly maintained.

[Prior Art] Generally, in a water meter installed in a water pipe, if an excessive flow rate of water passes through the meter, there is a risk that the meters will be extremely worn out or eventually damaged. Therefore, a flow rate regulator is installed before or after the water meter, and this flow rate regulator restricts the flow rate passing through the water meter and maintains it appropriately.

A conventional flow rate regulator is shown in FIG. 11 and will be described below.

As shown in the figure, a partition wall 3 that divides a water passage 2 into an inflow side and an outflow side is integrally provided in a generally cylindrical main body 1 arranged horizontally, and an opening is provided in this partition wall 3 in a direction perpendicular to the axial direction of the main body. An orifice hole 4 is formed therethrough. An upper opening 5 is formed in the upper part of the main body 1 coaxially with the orifice hole 4, and an operating shaft 7 passes through the mounting base 6 fitted into the upper opening 5 along the vertical direction so as to be freely rotatable forward and backward. . A spindle-shaped flow rate regulating valve 8 is screwed onto the lower end of the operating shaft 7, and is slidably attached to a guide pin 9 hanging down from the lower part of the mounting base 6. The lower end of this guide pin 9 is fixed to a valve seat 10 fitted into an orifice hole 4 of the partition wall 3. An indicating mechanism 12 that indicates the degree of opening of the orifice hole 4 by the flow rate regulating valve 8 is housed in the recess 11 of the mounting base 6 . This instruction mechanism 12
The main body 1 includes an index plate 13 which is rotatably inserted coaxially into the operating shaft 7 and has a pointer formed on its upper surface, and which is connected to the operating shaft 7 via a planetary gear mechanism 14.
It has a structure in which a scale is formed on the lower surface of a transparent window plate 15 that closes the upper opening 5.

In the above-mentioned flow rate regulator, the amount of water flowing through the water passageway 2 of the main body 1 from the inlet side to the outlet side via the orifice hole 4 is adjusted by rotating the operating shaft 7 in forward and reverse directions. Specifically, first, a removable operating handle 16 is attached to the upper shaft end of the operating shaft 7, and the operating handle 16 is used to rotate the operating shaft 7 in forward and reverse directions to move the flow rate regulating valve 8 to the guide pin 9. By moving it up and down along the flow rate adjusting valve 8 and changing the size of the annular gap 17 between the valve seat 10 in the orifice hole 4, the passing flow rate is restricted and maintained in an appropriate state with respect to the water meter. . At this time,
In the indicating mechanism 2, the rotation of the operating shaft 7 is transmitted to the index plate 13 via the planetary gear mechanism 14, and the index plate 13 is rotated at a reduced speed so that the position of the pointer relative to the scale can be visually observed from above.

[The problem that the idea attempts to solve]

Incidentally, in the conventional flow rate regulator described above, an indicating mechanism 12 that indicates the degree of opening of the orifice hole 4 by the flow rate regulating valve 8 is built into the mounting base 6 of the main body 1. Therefore, it has been difficult to downsize the main body 1 and it has not been easy to reduce the cost of the product.

Here, the indicating mechanism 12 is not used all the time, but is required only when adjusting the flow rate to recognize the opening degree of the orifice hole 4.

Therefore, the present invention was proposed with this point in mind, and its purpose is to provide a flow rate regulator whose main body can be made more compact and costs can be easily reduced by simple means.

[Means to solve the problem]

The technical means for achieving the above object of the present invention is to insert an operating shaft into an orifice hole formed through a partition wall that divides a water flow passage in the main body into an inflow side and an outflow side. It is installed vertically so that it can rotate freely in reverse, and by rotating the operating shaft, a flow rate regulating valve screwed onto the operating shaft is moved up and down to vary the flow rate passing through the orifice hole. The operating handle, which can be detached by fitting and connecting the fitting part to the shaft end of the operating shaft, has a built-in indicator mechanism that indicates the degree of opening of the orifice hole by the flow rate adjustment valve, and the indicator mechanism and the handle body are connected to each other. A planetary gear mechanism is interposed between the operating handle and the operating shaft so that the indicating mechanism can be connected to and disconnected from the operating shaft through the planetary gear mechanism by attaching and detaching the operating handle to the operating shaft. The rotation of the operating handle is decelerated by a planetary gear mechanism and transmitted to the indicating mechanism.

[Effect]

In the flow rate regulator according to the present invention, the indicating mechanism is separated from the main body and built into the operating handle that is attached to and detached from the operating shaft, thereby reducing the size and cost of the main body. When adjusting the flow rate, the instruction mechanism is connected to the operating shaft by attaching the operating handle to the operating shaft of the main body, and the flow rate adjustment valve is moved up and down by rotation of the operating shaft with the operating handle, and the flow rate passing through the orifice hole is adjusted. At the same time, the indication mechanism on the operating handle indicates the degree of opening of the orifice hole by the flow rate adjustment valve.

〔Example〕

An embodiment of the flow regulator according to the present invention will be described with reference to FIGS. 1 to 10. Note that FIGS. 1 to 6 show magnetic drive type flow regulators, and FIGS. 7 to 10 show gear drive type flow regulators.

First, the magnetic drive type flow regulator shown in FIGS. 1 to 6 will be specifically explained. Figures 1 and 2 show the operation handle attached to the main body, Figures 3 and 4 are cross-sectional views and side views of the operation handle removed from the main body, and Figures 5 and 6. FIG. 2 is an enlarged sectional view and a plan view of the operating handle.

In FIGS. 1 to 4, reference numeral 21 indicates a horizontally arranged approximately cylindrical body made of cast metal, and 22 indicates a water flow passage 23 formed integrally with the main body 21, which is formed along the axial direction of the main body 21. An orifice hole 24 that opens in a direction perpendicular to the axial direction of the main body 21 is formed through the partition wall that divides the main body 21 into a side and an outflow side. 25, 26
27 is an upper and lower opening hole formed coaxially with the orifice hole 24 in the upper and lower part of the main body 21 and has approximately the same diameter; 27 is inserted through the lower opening hole 26 of the main body 21; , a removable regulating valve unit fitted into the orifice hole 24 and the upper opening hole 25.
The base 31, which will be described below, located at the bottom of the unit is fixed to the bottom of the main body 21 by tightening and fixing it with screws 28. Reference numeral 29 denotes a cast lid that is attached to the upper part of the main body 21 via a pivot 30 so as to be openable and closable.

In the regulating valve unit 27, 31 is a base that is closely fixed to the main body 21 with a screw 28 via a gasket 32 to close the lower opening hole 26, and 33 is a guide pin that is vertically provided on the base 31 and is connected to the orifice hole 24. It is arranged in the lower inflow side space. 34
is an annular valve seat that is tightly fitted and fixed into the orifice hole 24 in the partition wall 22 of the main body 21 via a gasket 35, and fixedly supports the upper end of the guide pin 33. Reference numeral 36 denotes a stainless steel cover that surrounds the outflow side space above the orifice hole 24, and is composed of a cylindrical portion 36a and a top plate portion 36b integrally provided at the upper end of the cylindrical portion 36a. It is fitted into the orifice hole 24 and placed and fixed on the valve seat 34, and the peripheral edge of the top plate part 36b is brought into close contact with the upper opening hole 25 of the main body 21 via the gasket 37, and is fitted and fixed. An outflow hole 38 is formed in the outflow side portion of the cylindrical portion 36a of the cover 36. 39 is inserted into the orifice hole 24 and inserted into the main body 2.
1 is vertically installed so as to be able to freely rotate in forward and reverse directions.The lower shaft end 39a is supported on the base 31, and the upper shaft end 39a is
9b is inserted into the top plate portion 36b of the cover 36, protrudes from the upper surface thereof, and is disposed so as to be exposed within the recessed portion. Reference numeral 40 denotes a flow rate regulating valve screwed onto the lower part of the operating shaft 39, which has a substantially truncated conical shape whose diameter decreases from the inflow side to the outflow side of the orifice hole 24, and has a concave groove formed in its lower end flange. A guide pin 33 is fitted into the holder so that it can slide freely. 41 is cover 3
A magnet is embedded in the upper end of an annular convex portion formed on the top surface of the top plate portion 36b of No. 6, and is magnetically connected to an instruction mechanism 47 of an operating handle 42, which will be described later.

Reference numeral 42 denotes an operation handle that is attached to and removed from the main body 21 when the lid 29 of the main body 21 is opened when adjusting the flow rate, and includes an instruction mechanism 47 described later.

In the operating handle 42 shown in FIGS. 5 and 6, reference numeral 43 denotes a handle valve body, and a mounting portion 44 is integrally protruded from the lower end of the handle valve body. A fitting part 45 is formed to which the parts are attached and detached. 46 is the handle body 43
A transparent handle cover 47 fitted over the upper end of the handle body 43 is an indicating mechanism housed in a recess of the handle body 43. This indicating mechanism 47 has the following structure.
That is, the fixed holding member 49, which is set in a fixed state with respect to the rotation of the operating handle 42, is held by a support pin 48 vertically disposed on the mounting portion 44 of the handle body 43.
Supported so that it can be fixed freely. A magnet 50 is attached to a flange portion extending outward from the lower end of the fixed holding member 49, and the magnet 50 is attached to a thin wall portion 51 around the attachment portion 44 of the handle body 43.
When the operating handle 42 is attached to the main body 21, it is magnetically coupled to the magnet 41 on the convex portion of the cover 36 of the main body 21 via the thin portion 51. On the other hand, at the upper end of the fixed holding member 49,
A disk-shaped transparent scale plate 53 with a scale 52 engraved on the lower surface is fixed, and its periphery is attached to the handle body 43.
It is placed on the upper edge of the In addition, the handle body 4
A planetary gear mechanism 54 is provided inside the holding member 49, and a gear 55 is coaxially inserted and fixed to the substantially central portion of the fixed holding member 49. A bottomed cylindrical frame 56 is fitted into the handle body 43 described above, and the fixed holding member 49 is inserted into the through hole at the bottom thereof. This frame body 56 has a gear 5 of the fixed holding member 49.
A cylindrical gear 57 that meshes with the gear 5 is rotatably supported. A disc-shaped index plate 59 having a pointer 58 engraved on its upper surface is coaxially and rotatably fitted into the fixed holding member 49, and the peripheral edge of the index plate 59 is placed on the upper edge of the frame 56. . A gear 60 is fixed coaxially to the index plate 59, and the gear 60 meshes with the cylindrical gear 57.

In the flow rate regulator having the above configuration, the water flow passage 23 of the main body 21 is opened from the inflow side to the orifice hole 24.
The amount of water flowing toward the outflow side is adjusted by rotating the operating shaft 39 of the main body 21 in forward and reverse directions.

Specifically, after opening the lid 29 of the main body 21 from the state shown in FIGS. 3 and 4, the operation handle 4 is attached to the main body 21 as shown in FIGS. 1 and 2.
Attach 2. The mounting portion 44 of the handle body 43 of the operating handle 42 is connected to the upper opening hole 2 of the main body 21.
5, and the fitting part 45 of the mounting part 44 is fitted into the upper shaft end 39b of the operating shaft 39 to connect it. At this time, the operating handle 4 is attached to the magnet 41 on the protrusion of the cover 36.
The magnets 51 of the second fixed holding member 49 are magnetically coupled via the thin wall portion 51 of the handle body 43, and the fixed holding member 49 is in a fixed state.

After the operating handle 42 is attached, the operating shaft 39 is rotated forward and backward using the operating handle 42 to move the flow rate regulating valve 40 inserted into the orifice hole 24 up and down along the guide pin 33. By vertically moving the flow rate regulating valve 40, the size of the annular gap 61 formed between the flow rate regulating valve 40 and the valve seat 34 in the orifice hole 24 is changed, thereby restricting the flow rate passing through the water meter. Maintain proper flow rate for

When adjusting the flow rate described above, the opening degree of the orifice hole 24 by the flow rate adjustment valve 40 is indicated by the indicating mechanism 47 built into the operation handle 42 . Specifically, the fifth
While the handle body 43 of the operating handle 42 rotates as shown in FIG. 6 and FIG. It is fixed by magnetic attraction with the magnet 41 located at the top. On the other hand, as the handle body 43 rotates, the frame body 56 also rotates, and the cylindrical gear 57 meshes with the gear 55 and revolves around the fixed holding member 49 while rotating. As a result, the indicator plate 59 is
rotates. The gear ratio is set so that the index plate 59 rotates at a reduced speed. Due to the deceleration rotation of the index plate 59, the pointer 58 rotates relative to the scale 52 of the scale plate 53 to display the opening degree of the orifice hole 24, that is, the flow rate passing through. After completing the flow rate adjustment as described above, the operating handle 42 is removed from the main body 21 and the lid 29 of the main body 21 is closed.

Next, the gear drive type flow regulator shown in FIGS. 7 to 10 will be specifically explained. Figures 7 and 8 are cross-sectional views and side views of the operating handle attached to the main body, Figure 9 is a cross-sectional view of the operating handle removed from the main body, and Figure 10 is the operating handle. It is an enlarged sectional view. Incidentally, the same reference numerals are given to the same or corresponding parts as those of the flow rate regulator shown in FIGS. 1 to 6, and redundant explanation will be omitted.

The difference from the above-mentioned magnetic drive type flow regulator is that a part of the cover 36 of the main body 21 and the operation handle 4 are different from each other as shown in FIGS.
It is part of 2. Specifically, as shown in FIGS. 7 and 9, the gear 62 is fixed to the top plate portion 36b of the cover 36 coaxially with the operating shaft 39. Further, the instruction mechanism 47 built into the operation handle 42 is
As shown in FIG. 10, a fixed holding member 49 is housed and arranged coaxially with the operating shaft 39 inside the handle body 43. A scale plate 53 is integrally provided at the upper end of the fixed holding member 49, the peripheral edge of the scale plate 53 is placed on the inner peripheral edge of the handle body 43, and a gear 55 is integrally provided at the lower end of the fixed holding member 49. established in An indicator plate 59 is rotatably inserted approximately in the center of the fixed holding member 49, its peripheral edge is placed on the upper edge of the handle body 43, and a gear 60 is fixed to its lower end. On the other hand, a cylindrical gear 57 is rotatably supported on the handle body 43, and a fixed holding member 49
The gears 55 and 60 of the index plate 59 mesh with each other.
The lower end of this cylindrical gear 57 is attached to the handle body 43.
It is exposed in a recess 63 formed in the mounting portion 44 of the main body 21 and can be engaged with a gear 62 on the cover 36 of the main body 21. Note that the number of teeth of the gear 55 of the fixed holding member 49 and the gear 62 of the cover 36 are set to be the same.

In the above gear drive type flow regulator, like the magnetic drive type mentioned above,
Open the lid 29 from the state shown in FIG.
The operating handle 42 is attached to the main body 21 as shown in FIGS. At this time, the cylindrical gear 57 of the operating handle 42 is connected to the mounting portion 44 of the handle body 43.
The gear 6 of the cover 36 is housed in the recess 63 of the
meshes with 2.

After the operating handle 42 is attached, the operating shaft 39 is rotated in forward and reverse directions using the operating handle 42 to adjust the flow rate. Note that a detailed explanation of the operation will be omitted since it is the same as that of the magnetic drive type.

On the other hand, when adjusting the flow rate, the opening degree of the orifice hole 24 is indicated by the indicating mechanism 47 built into the operating handle 42 as follows. That is, the 10th
As shown in the figure, while the handle body 43 of the operating handle 42 rotates, the fixed holding member 49 and the scale plate 53 have the same number of teeth as the gear 62 of the cover 36 and the gear 55 of the fixed holding member 49. It is set to a fixed state. Hereinafter, similarly to the magnetic drive type, the rotation of the handle body 43 causes the cylindrical gear 57 meshed with the above-mentioned gears 55 and 62 to revolve around the fixed holding member 49 while rotating. The index plate 59 rotates at a reduced speed via the gear 60 that meshes with the index plate 59 .

[Effect of idea]

According to the flow rate regulator of the present invention, since the indicating mechanism is separated from the main body and built into the operating handle that is detachable from the main body, the operating handle indicating mechanism can be
Even though it has an integrated structure, it can be attached to the main body only when adjusting the flow rate and removed from the main body at all other times, making it easy to make the main body more compact and reduce costs.In addition, the operating handle can be easily attached and detached with one touch. This allows us to provide a flow regulator that is small, inexpensive, easy to handle, and has great commercial value.

[Brief explanation of the drawing]

Figures 1 to 10 are for explaining an embodiment of the present invention. Figure 1 is a cross-sectional view showing the operation handle attached to a magnetic drive type flow regulator, and Figure 2 is a cross-sectional view of the magnetic drive type flow regulator. side view, Figure 3 is the 1st
Figure 4 is a side view of Figure 3, and Figure 5 is a cross-sectional view of the flow regulator with the operating handle removed.
6 is a plan view of FIG. 5, FIG. 7 is a sectional view showing the operating handle of the gear drive type flow regulator installed, and FIG. FIG. 7 is a side view, FIG. 9 is a sectional view showing the operation handle of the flow rate regulator in FIG. 7 in a removed state, and FIG. 10 is an enlarged sectional view showing the operation handle of the flow rate regulator in FIG. 7. FIG. 11 is a sectional view showing a conventional example of a flow rate regulator. 21... Main body, 22... Partition wall, 23... Water passage, 24... Orifice hole, 39... Operating shaft, 4
0...Flow rate adjustment valve, 42...Operation handle, 47
...Instruction mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] An operating shaft is inserted through an orifice hole formed through a partition wall that divides a water passage in the main body into an inflow side and an outflow side, and is vertically installed in the main body so as to be able to freely rotate in forward and reverse directions. By rotating the operating shaft, a flow rate regulating valve screwed onto the operating shaft is moved up and down to vary the flow rate passing through the orifice hole, and the fitting part of the handle body is connected to the axis of the operating shaft. The operation handle, which can be detached by fitting and connecting to the end, has a built-in indicator mechanism that indicates the opening degree of the orifice hole by the flow rate adjustment valve, and a planetary gear mechanism is installed between the indicator mechanism and the handle body. By interposing and detaching the operating handle from the operating shaft, the indicating mechanism can be connected to and disconnected from the operating shaft via the planetary gear mechanism, and the rotation by the operating handle of the operating shaft that is connected to the operating handle in a fitted state is caused by the planetary gear mechanism. A flow regulator characterized in that the speed is decelerated by a gear mechanism and transmitted to an indicating mechanism.