JPH08105106A - Regulating device for flow rate - Google Patents

Abstract

PURPOSE: To easily balance buoyancy by a float with the weight of a dead weight, and to surely close an outlet with a valve when water level rises. CONSTITUTION: One end of a valve support 4 is swingably mounted in the vicinity of an outlet 21 for fluid and a valve 5 closing the outlet 21 is provided on the other end of the valve support 4. The valve 5 can be reciprocated between a closing position closing the outlet 21 therewith and an opening position being apart from the outlet 21, by the swing of the valve support 4, a float 43 is provided on the valve support 4, and a dead weight 411 is removably provided thereon. When fluid level decreases, the valve 5 lowers to be in the vicinity of the opening position thereof, owing to the gravitation of the valve 5, the valve support 4 and so on. When the fluid around them increases, the valve 5 rises to be the vicinity of the closing position thereof owing to buoyancy by the float 43.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow rate adjusting device suitable for use in public sewage outlets connected to sewers.

[0002]

2. Description of the Related Art Conventionally, in a combined sewer system, rainwater and sewage are discharged through the same pipeline system. In such a combined sewer system, a large amount of rainwater is exposed to the public during rainy weather, and if it flows into the sewer system, the burden on the sewage treatment plant increases, which is not preferable.

As a means for solving such a problem in the combined sewer system, for example, a flow rate adjusting device as disclosed in Japanese Utility Model Laid-Open No. 4-61185 is known. In this flow rate adjusting device, as shown in FIG. 7, a rod f is swingably provided near one end outlet b of a sewage outflow pipe a, and a weight c, a float d and a closing body e are attached to the rod f. When the water level rises, the obstruction body e obstructs the outlet b by the buoyancy of the float d and adjusts the flow rate of the fluid flowing out from the outlet b. In FIG. 7, g is public, h is rainwater inflow pipe, i is rainwater outflow pipe, j is rainwater mass g
Is the lid.

[0004]

However, in the conventional flow rate adjusting device, it is difficult to adjust the balance between the weight of the weight c and the buoyancy of the float d, and even if the water level rises, the weight c Is larger than the buoyancy of the float d, the closing body e may not close the outlet b, and conversely, if the buoyancy of the float d is larger than the weight of the weight c, the blockage is blocked. The body e kept the outlet b closed, the outlet b did not open, and the rainwater did not flow out from the outlet b.

The present invention relates to a conventional flow rate adjusting device,
The present invention has been made by paying attention to such a problem, and the purpose thereof is to solve the above problem and to easily adjust the balance between the weight of the weight c and the buoyancy of the float d. Then, there is provided a flow rate adjusting device capable of closing the outlet when the water level rises and opening the outlet when the water level falls.

[0006]

In order to achieve the above object, in the flow rate adjusting device of the present invention according to claim 1, one end of the occluding body support is swingably attached near the fluid outlet.
A closing member that can close the fluid outlet is provided at the other end of the closing member support, and a closing position where the closing member closes the fluid outlet due to the swing of the closing member support and an opening position separated from the fluid outlet. It is possible to reciprocate between the occluder, the float is provided on the occluder support, and the weight is detachably provided.When there is little fluid in the surroundings, the occluder is urged by gravity of the occluder and the occluder support. It is characterized in that it is lowered to be in the vicinity of the opening position, and when the surrounding fluid increases, the obstruction body rises to the vicinity of the obstruction position by the buoyancy of floating.

According to a second aspect of the present invention, there is provided the flow rate adjusting device according to the first aspect, wherein the fluid outlet, the occlusion body support, the occlusion body, the weight, and the float water passage are provided. It is characterized by being covered with a protective cover.

A third aspect of the present invention is the flow rate adjusting device according to the first or second aspect, wherein the diameter of the fluid outlet is changeable.

In the present invention, as the material of the closing body,
Although not particularly limited, a material having high elasticity such as natural or synthetic resin rubber is preferable in order to have a function of closely closing the fluid outlet and closing the fluid outlet.

The material of the occluder support is not particularly limited, but for example, hard vinyl chloride resin, ABS resin, PVDF resin, PPS resin, PEEK.
Resins, synthetic resins such as FRP, or materials such as painted cast iron, metals such as stainless steel, and aluminum can be used alone or in appropriate combination.

The material of the weight is preferably a heavy one such as lead or tin alloy. The means for removably attaching the weight to the obstruction body support is not particularly limited, but for example, the weight may be provided on the obstruction body support by bolts and nuts as in the illustrated embodiment. Well, a female screw may be provided on the weight, and a male screw that can be screwed into the female screw of the weight may be provided on the occlusion body support. Conversely, a male screw may be provided on the weight and the male screw of the weight may be screwed on the occlusion body support. It is also possible to provide a female screw that can be used to attach both. Further, as the material of the float, it is preferable to use one having high durability and large buoyancy, such as polyethylene hollow body.

Further, in the invention according to claim 3, as means for changing the diameter of the fluid outlet, as shown in the embodiment shown in the drawings, inner pipes of various diameters are fitted and exchanged in the fluid outlet, Alternatively, a blocking plate having openings with various diameters may be attached to the fluid outlet and replaced.

[0013]

In the flow rate adjusting device of the present invention as set forth in claim 1, since the weight is detachably provided on the occluder support, weights of various weights are prepared and the weights of the weights are exchanged appropriately. By mounting it, it is possible to balance with the buoyancy of the float, and when the water level of the fluid rises, the buoyancy causes the obstruction body to obstruct the fluid outlet.

Further, in the flow rate adjusting device of the present invention as set forth in claim 2, since the fluid outlet, the occluder support, the occluder, the weight and the float are covered by a protective cover provided with a water passage, The fluid outlet will not be blocked by dust such as leaves.

Further, in the flow rate adjusting device of the present invention as defined in claim 3, since the diameter of the fluid outlet can be changed, the fluid outflow amount is reduced by reducing the diameter of the fluid outlet, but the adjustment sensitivity. Is increased, and conversely, by increasing the diameter of the fluid outlet, the fluid outflow amount is increased, but the adjustment sensitivity is reduced, and it can be appropriately adjusted according to the situation of the fluid amount.

[0016]

Embodiments of the present invention will now be described with reference to the drawings. [Embodiment 1] Embodiment of the invention described in claim 1 FIG. 1 is a partially cutaway front view showing an example of a flow rate adjusting device of the present invention.

In FIG. 1, reference numeral 1 designates a side wall of a concrete public box, a side wall 1 is provided with a sewage outflow pipe mounting hole 11, and a sewage outflow pipe mounting hole 11 is provided with a hard vinyl chloride resin sewage outflow pipe 2. The tip of the sewage outflow pipe 2 is connected to a sewer pipe (not shown). A sewage outlet 21 is formed at one end of the sewage outflow pipe 2 which is open to the public. A short pipe 22 made of a hard vinyl chloride resin is attached to the outer surface of one end of the sewage outflow pipe 2, and one end of a hard vinyl chloride resin support 3 is attached to the collar portion 221 of the short pipe made of a collar 22.
On the other end of the support 3, one end of a closing body support 4 is pivotally mounted 41.

The occluder support 4 is composed of a main body 42 made of a hard vinyl chloride resin and a float 43. An annular weight 411 made of lead is attached to the middle of the main body 42 with bolts and nuts 412. A float 42 made of a polyethylene hollow body is attached to the tip of the, and a disk-shaped rubber block 5 is attached to the tip of the float 42, and the block 5 has a size for closing the wastewater outlet 21.

When the amount of rainwater in the public masu is small, the weight of the closing body 5, the closing body mounting body 4 and the weight 411 causes the closing body 5 and the closing body support 4 to have the shaft-attaching portion 4 as indicated by a chain double-dashed line.
When the amount of rainwater in the public trout increases, the buoyancy of the float 43 exceeds the weight of the closing body 5, the closing body support 4 and the weight 411, and the closing body 5 and the closing body support 4 Rises to the closing position shown by the solid line, and the closing body 5
Seals the wastewater outlet 21. Weight 4
11 have various weights, and attach appropriate weights to adjust the weight of the weight 411 to float
Be able to adjust the balance with the buoyancy of.

[Operation of Embodiment] Next, the operation of the flow rate adjusting device of the present invention shown in FIG. 1 will be described. When there is little rainwater in the public mast, the block 5, the block support 4 and the weight 4
Due to the weight of 11, the occluder 5 and the occluder support 4 are in the open position depending on the two-dot chain line, and rainwater in the public masu is discharged from the sewage outlet 21 to the sewage outflow pipe 2. Spilled into sewer pipeline.

When the amount of rainwater in the public increases, the buoyancy of the float 43 exceeds the weight of the closing body 5, the closing body support 4 and the weight 411, and the closing body 5 and the closing body support 4 rise to show the solid line. When reaching the closing position, the closing body 5 closes the sewage outlet 21. The weight 411 has an appropriate weight,
Since it is balanced with the buoyancy of the float 43,
Whenever the water level rises, the sewage outlet 21 is closed. Therefore, when the amount of rainwater in the public increases, the sewage outlet 21 is automatically closed and the water flow to the sewer pipe is stopped.

[Embodiment 2: Embodiment of the invention described in claim 1] FIG. 2 is a partially cutaway front view showing another example of the flow rate adjusting device of the present invention. In the flow rate adjusting device of the present invention shown in FIG. 2, the disk-shaped closing member 5 provided at one end of the hollow float 43.
A concave groove 51 is provided on the peripheral surface of the so that the sewage outlet 21 can be easily closed by the water pressure of rainwater in the public masu.

[Embodiment 3: Embodiment of the invention described in claim 2] FIG. 3 is a partially cutaway front view showing still another example of the flow rate adjusting device of the present invention. In the flow rate adjusting device of the present invention shown in FIG. 3, a protective cover 6 made of a hard vinyl chloride resin is attached to the short pipe 22 with a collar, and the protective cover 6 allows the sewage outlet 21, the support 3, the obstruction body support 4 and the obstruction. The body 5 is covered. In the protective cover 6, one end of a cylindrical cover body 62 is attached to the back cover 61, a front cover 63 is attached to the other end of the cover body 62, and water holes 64 are provided in the lower half of the cover body 62 and the front cover 63. It is constructed by drilling.

[Operation of Embodiment 3] In the flow rate adjusting device of the present invention shown in FIG.
Since the support 1, the support 3, the occluder support 4 and the occluder 5 are covered, there is no possibility that the wastewater outlet 21 will be clogged with dust such as leaves.

[Embodiment 4: Embodiment of the Invention According to Claim 3] FIG. 4 is a partially cutaway front view showing still another example of the flow rate adjusting device of the present invention. In the flow rate adjusting device of the present invention shown in FIG. 4, the short pipe 7 is fitted to one end of the sewage outflow pipe 2 which is opened in the public space, and the diameter of the sewage outflow port 21 is reduced.

[Operation of Embodiment 4] In the flow rate adjusting device of the present invention shown in FIG. 4, since the short pipe 7 is fitted to one end of the sewage outflow pipe 2, the diameter of the sewage outflow port 21 is reduced.
The amount of sewage outflow from the sewage outlet 21 is reduced.

The sewage outflow rate can be adjusted by preparing short pipes 7 having different inner diameters and appropriately mounting and exchanging them on the sewage outflow pipe 2. As shown in FIGS. 5 and 6, a sewage outflow pipe is used as the short pipe 7, as shown in FIGS. 5 and 6, in which a collar 71 is projected at one end, a hollow shaft is eccentric, and a scale 72 is provided on the front surface of the collar 71. The outflow rate can be adjusted more finely by attaching the switch to one end of the tube 2 and checking the eccentric position with the scale 72 by rotating the short tube 7.

The embodiments of the present invention have been described above with reference to the drawings. However, the specific configuration of the present invention is not limited to the embodiments shown in the drawings, and the design can be changed without departing from the gist of the present invention. Etc. are included in the present invention.

For example, in the illustrated embodiment, the flow rate adjusting device of the present invention is an example used in a public space, but the flow rate adjusting device of the present invention is not limited to a public space and is provided at a place equipped with another fluid outlet. Can be used. Further, the fluid is not limited to water such as sewage, but other liquids can be used.

[0030]

In the flow rate adjusting device of the present invention as set forth in claim 1, since the weight is detachably provided on the occluder support, weights of various weights are prepared, and the weights of appropriate weights are prepared. It is possible to balance with the buoyancy of the float by replacing and installing it.When the water level of the fluid rises, the obstruction always blocks the fluid outlet due to the buoyancy, and conversely when the water level of the fluid falls, it is blocked by the weight of the weight. The body moves away from the fluid outlet opening the obturator.

Further, in the flow rate adjusting device of the present invention as set forth in claim 2, since the fluid outlet, the obstruction body support, the obstruction body, the weight and the float are covered by a protective cover provided with a water passage, The fluid outlet will not be blocked by dust such as leaves.

Further, in the flow rate adjusting device of the present invention according to claim 3, since the diameter of the fluid outlet can be changed, the fluid outflow amount is reduced by reducing the diameter of the fluid outlet, but the adjustment sensitivity. Is increased, and conversely, by increasing the diameter of the fluid outlet, the fluid outflow amount is increased, but the adjustment sensitivity is reduced, and it can be appropriately adjusted according to the situation of the fluid amount.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an example of a flow rate adjusting device of the present invention.

FIG. 2 is a partially cutaway front view showing another example of the flow rate adjusting device of the present invention.

FIG. 3 is a partially cutaway front view showing still another example of the flow rate adjusting device of the present invention.

FIG. 4 is a partially cutaway front view showing still another example of the flow rate adjusting device of the present invention.

FIG. 5 is a front view showing another example of the short pipe.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a partially cutaway front view showing a conventional flow rate adjusting device.

[Explanation of symbols]

 1 Side wall of public masu 11 Sewage outflow pipe mounting hole 2 Sewage outflow pipe 21 Sewage outflow port 3 Support 4 Closure support 41 Shaft attachment 411 Weight 412 Bolt nut 42 Body 43 Float 5 Closure 6 Protective cover 7 Short tube

Claims (3)

[Claims] 1. An end portion of a closure body support is swingably attached near a fluid outlet, and a closure body capable of closing the fluid outlet is provided at the other end of the closure body support. The oscillating movement allows the occluding body to reciprocate between a occluding position where the occluding body closes the fluid outlet and an opening position where the occluding body is separated from the fluid outlet, and the occluding body support is provided with a float and the weight is detachably provided. When there is little fluid in the surroundings, the obstruction body falls near the opening position due to the gravity of the obstruction body, the obstruction body support and the weight, and when the surrounding fluid increases, the obstruction body moves to the obstruction position due to the floating buoyancy. A flow rate adjusting device characterized in that it is designed to rise in the vicinity. 2. The flow rate adjusting device according to claim 1, wherein the fluid outlet, the occluder support, the occluder, the weight and the float are covered with a protective cover provided with a water passage. 3. The flow rate adjusting device according to claim 1 or 2, wherein the diameter of the fluid outlet is changeable.