JPH0914491A - Water discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water discharge device which discharges water inside a reservoir at once by the use of a float for effective cleaning the inside portion of a water discharge system. SOLUTION: A water discharge device is composed of a reservoir body 1 having a discharge port 7 and an inflow port 11, a float 2 fitted to the discharge port 7, valve raising floats 3a, 3b connected to the float 2 through a string-like member 4, and a partitioning body 5 which is arranged between the float 2 and the floats 3a, 3b for separating them from each other. The float 2 serves as a valve body for closing the discharge port 7, and discharged water is stored inside the reservoir body 1. When a level of the discharged water rises, floating force is generated on the valve raising floats 3a, 3b. The float 2 is then separated from the discharge port 7 for discharging the stored water. When the water is flowed out, the float 2 is fitted to the discharge port 7 by means of the string-line member 4, and the discharged water is stored again inside the reservoir body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device used in a drainage system that leads to treatment equipment such as sewage and sewage, and the like. The present invention relates to a drainage device that can be used.

[0002]

2. Description of the Related Art Conventionally, in order to guide wastewater such as sewage or miscellaneous wastewater to a treatment facility or other destination, the wastewater is introduced into a drainage system such as a sewer pipe, and the inside is naturally flowed to the destination. It is general to make it reach. However, in the drainage system such as the sewer pipe, there is a problem that dusts and the like contained in the drainage are stagnated inside, or sticky matters such as human waste adhere to the inner wall to cause clogging. As a solution to these problems, a "drainage system cleaning method and its device" (JP-A-3-293443) and a "drainage system cleaning device" (JP-A-5-33383) are disclosed.
These devices apply the siphon principle, and when the temporarily stored wastewater exceeds a certain amount, a siphon phenomenon occurs and it is discharged to the drainage system of the sewer pipe at a time, and the momentum and the amount of water. By doing so, the inside of the sewer can be washed away and cleaned.

[0003]

However, in the application of the siphon principle in the above-described drainage system cleaning device, in the overflow space of the siphon structure, the rise of the water level of the stored drainage is rapid to some extent. Was required, and there was a problem that the siphon phenomenon does not occur at a flow rate below a certain flow rate into the storage tank. In addition, when the siphon phenomenon occurs, there is a limitation that the overflow space of the siphon structure must have a height equal to or lower than an appropriate height corresponding to the inflow amount, and the flow rate of drainage that can be passed through is limited. In this way, the fact that there is a limit to the amount of drainable water means that there is a limit to the cleaning capacity inside the pipe, which also leads to a cause of blockage when a large amount of inflow occurs, and there is also a problem that a cleaning effect cannot be obtained. .

The present invention has been made by paying attention to the problems of the prior art as described above, and the purpose thereof is to discharge the waste water stored in the storage tank at a stretch, and according to its momentum and the amount of water, An object of the present invention is to provide a drainage device capable of efficiently cleaning the inside of the drainage system.

[0005]

According to the present invention, there is provided a storage tank main body having a discharge port at the bottom and an inflow port at the top, and a storage unit provided in the storage unit and fitted to the discharge port. A valve float, a valve lifting float that is connected to the valve float by a filamentous material and is located above the valve float in the storage tank main body, and the valve float and the valve lifting float. And a partitioning body that is disposed between the float and the float to separate the floats from each other. It is achieved by a drainage device characterized by being set to be larger than the total weight of the valve float and the valve lift float.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a storage tank main body,
A discharge port 7 is provided at the center of the storage tank base 12 forming the bottom portion, and a rubber packing 6 is adhered and fixed to the storage tank base 12 on the peripheral surface of the discharge base 7 so as to maintain watertightness.
Further, the tubular portion 8 forming the side portion of the storage tank main body 1 is fitted around the storage tank base 12 via the O-ring 13, and drainage flows into the upper side wall of the tubular portion 8. An inflow port 11 is provided, and a lid portion 14 is provided on the upper surface of the tubular portion 8. If air is not mixed into the storage tank from the inflow port 11, it is necessary to appropriately provide an air hole in the lid portion 14.

Reference numeral 2 denotes a hollow valve float, which has a weight and a volume such that the float itself does not float in the initial stage of drainage storage and is fixed to the discharge port 7 by a rubber packing 6. They are provided in close contact with each other and are arranged so as to be able to float between the discharge port 7 and the lower portion of the partition body 5 described later. In the present embodiment, in order to suppress the floating of the valve float 2 inside the valve float 2 in the initial stage of storage, after the stored drainage is discharged, the valve float 2 is normally placed in the discharge port 7. A small amount of water is infused as a kind of weight for the purpose of guiding it to various positions. In this way, better operation can be obtained.

Reference numeral 3 denotes a valve lifting float for lifting the valve float 2, which is provided above the partition 5 across a partition 5 and is separated from the valve float 2 to be used for the valve. The float 2 and the thread 4 are connected. Float for lifting valve 3
Buoyancy must be set to be larger than the sum of the downward water pressure applied to the valve float 2 and the total weight of the valve float 2 and the valve lift float 3. The method for providing the valve lifting float 3 is not particularly limited, and one or a plurality of valves may be provided, and it may be appropriately selected and provided.
The valve lifting float 3 of this embodiment is formed of four pieces having the same shape and size as the valve float 2, and the buoyancy is increased stepwise as the liquid level rises. It is provided in. That is, of the four provided, two floats 3
b and 3b are horizontally joined and fixed by a screw 17 made of stainless steel, and the remaining two floats 3 are provided at an intermediate position between them.
a and 3a are movably separated from each other and connected by a thread 4a, and the valve float 2 is provided at the intermediate position with the thread 4a.
Are connected via The floats of the valve float 2 and the valve lifter 3 must be smaller than the specific gravity of the drainage. In the present invention, a polyethylene-made oval cross-section float is used. However, it may be a solid product without weight and is not particularly limited.

With such a construction, the valve lifting float 3 becomes the valve float 2 due to the rise of the liquid level in the storage tank.
And the valve float 2 can be detached from the discharge port 7. For reference, when the buoyancy of the valve lifting float 3 is sufficiently large and the buoyancy acts at one time, the valve buoy 2 is instantly greatly lifted by the valve lifting buoy 3, but the valve buoy A gap is created between the discharge port 2 and the discharge port 7, the stored drainage is discharged from the gap, the liquid level immediately drops by an amount corresponding to the drainage amount, and the buoyancy of the valve lifting float 3 decreases, In some cases, the valve float 2 cannot be removed. Therefore, as described above, it is desirable that the valve lifting float 3 be set so that the buoyancy increases stepwise as the liquid level rises.

Reference numeral 4 denotes a valve float 2 and a valve lifter 3
Although a multifilament type fibrous polyethylene is used in this embodiment, it is not particularly limited as long as it has a high elasticity and a low expansion and contraction, other than a rod-shaped or rubber-like material. Also, within a certain range of its length,
It is possible to adjust the amount of waste water stored by making appropriate changes. That is, the length of the filamentous material 4 is such that the drainage is stored in the storage tank, and the filamentous material 4 has the liquid level water level in a state where the filamentous material 4 is fully extended due to the increase in the buoyancy of the valve fabricating float 3. The buoyancy is set so that it becomes uniform with the downward water pressure applied to the valve float 2 and the total weight of the valve float 2 and the valve lift float 3 and has an equilibrium point. In this example, the liquid surface water level h, which is the equilibrium point, was calculated by the following equation, and the length of the filamentous material 4 was determined based on this. h = M / {ρ (A _b −A _p )} M: Total weight of the valve float 2 and the valve lifting float 3 ρ: Specific gravity of drainage A _b : Cross-sectional area of the valve lifting float 3 A _p : Cross-sectional area of the portion of the valve float 2 that receives downward water pressure

The reference numeral 5 is fixed to a storage tank base 12, and as shown in FIG. 4, a cylindrical support base 9 whose side surface is notched, and an after-mentioned axial center adjusting plate 10 provided on the support base 9. It is a partition consisting of. The partition body 5 partitions the moving space of the valve float 2 and the valve lift float 3, and serves to stop the rise of the valve float 2 and the drop of the valve lift float 3. There is. The height of the partition body 5 is not particularly limited, but at least the valve float 2 is detached from the discharge port 7, and the filamentous material 4 is loosened to a height at which it can float. (See Fig. 2)

Reference numeral 10 denotes an axial center adjusting plate provided on the upper portion of the support base 9 in the radial direction. At the center of the shaft center adjusting plate 10,
A hole 16 for holding the thread 4 on the axis is provided so that the thread 4 substantially coincides with the axis of the discharge port 7. As shown in FIG. 5, how to provide the partition body 5 is as follows.
A method of directly fixing to the tubular portion 8 of the storage tank body 1 may be used and is not particularly limited.

The operation of this embodiment will be described below. In the state shown in FIG. 1, the valve float 2 serves as a valve element to block the discharge port 7 and the liquid surface water level in the storage tank rises, whereby buoyancy is generated in the valve lifting float 3. At this time, the valve float 2
A downward water pressure corresponding to the liquid surface water level is applied to the upper surface of the valve so that the buoyancy and force balance of the valve lifting float 3 are maintained. When the drainage further flows in from this state and the liquid level rises, the buoyancy of the valve lifting float 3 exceeds the downward water pressure applied to the valve float 2, and the valve float 2 becomes
When the upward force due to the buoyancy of the valve lifting float 3 is increased, the valve lifter 3 is lifted and separated from the discharge port 7, and floats up to the lower part of the partition 5 in the storage tank body 1 (state of FIG. 2). The stored wastewater is discharged.

Further, when the liquid level is lowered by discharging the stored drainage, the valve lifting float 3 is also lowered,
The valve lifting float 3 stays at the upper part of the partition 5, and the valve float 2 that has floated to the lower part of the partition 5 is discharged by the thread 4 supported on the axis of the partition 5. Is guided to the discharge port 7 so as to be drawn in (state of FIG. 3),
Finally, the discharge port 7 is fitted.

As described above, in order to discharge the stored drainage water, the power for lifting the valve float 2, that is, the buoyancy of the valve pull-up float 3 is required to obtain sufficient buoyancy. From the state where the filamentous material 4 is fully extended,
Furthermore, it is an essential condition that the liquid level rises. In other words, the amount of inflow into the storage tank is from the time when the valve float 2 is pulled up by the valve lifter 3 (the state in which the filament 4 is fully extended) until the valve float 2 floats. Small body opening 15 (rubber packing 6 and valve float 2
It must always be larger than the amount of wastewater discharged from the contact point). In this embodiment, one of the valve lifting floats 3 is movably connected so that the valve lifting float 2 is surely lifted, and the valve lifting float 3 associated with the rise of the liquid level in the storage tank. And the water pressure applied to the valve float 2 are changed to the same degree (the change in buoyancy increase is slightly large).

In this embodiment, as described above, two floats 3a, 3a of the valve lifting floats are connected to the intermediate position of the screw 17 by the thread 4a, and the float 3
When a and 3a are lifted by buoyancy and moved to the state where the filament 4a is fully extended, this buoyancy is balanced with the downward force applied to the valve float 2 and the sum of all weights.
Therefore, when drainage is stored in the storage tank, first, the moving floats 3a, 3a rise, the buoyancy and the water pressure applied to the valve float 2 are balanced, and then the entire valve lift float 3 is lifted. The increase in the buoyancy received by the valve lifts the valve float 2 and completely opens the discharge port 7.

Further, the drainage is stored in the storage tank, and the buoyancy of the valve lifting float 3 is used for the valve at the liquid level when the filament 4 is fully extended by the increase of the buoyancy of the valve lifting float 3. The length of the filamentous material 4 is set so as to be uniform with the downward water pressure applied to the float 2 and the total weight of the valve float 2 and the valve lift float 3 and to have an equilibrium point. That is, by adjusting the balance between the relative forces of buoyancy acting on the entire float, gravity, and water pressure, the head of the stored drainage, and the length of the filamentous material 4, the valve lifting float 3 becomes the valve float 2. It is possible to pull up and disengage, and the drainage stored in the storage tank can be discharged at once.

Further, in the prior art, in order to cause the siphon phenomenon, it was necessary to raise the water level of the stored wastewater to a certain extent in the overflow space of the siphon structure. It is not necessary to use the float, and thus the water level can be raised to immerse the valve lifting float 3, that is, even if the amount of drainage flowing into the storage tank is considerably smaller than that in the prior art. It can be discharged efficiently and surely.

FIG. 5 is a drainage device showing another embodiment of the present invention. The valve lifting float for lifting the valve float 2 has a cylindrical shape having a lower step portion 3a having the same cross-sectional area as the valve float 2 and an upper step portion 3b having a cross-sectional area slightly larger than the cross-sectional area. It is formed integrally with the step, is separated from the valve float 2 by the partition body 5, and is connected by the thread 4.

With the above-mentioned structure, the buoyancy of the valve lifting float 3 and the water pressure received by the valve float 2 are changed to the same extent as the liquid level rises, and the rise of the liquid level is further enhanced. Therefore, the valve float 2 is easily floated. The operation is the same as that of the previous embodiment, and will be omitted.

[0021]

According to the present invention, since a kind of valve mechanism is formed inside a storage tank by utilizing a pair of floats consisting of a valve float and a valve lifting float, the drainage stored in the tank is drained. To
It is repeatedly discharged all at once, and the inside of the drainage system can be efficiently cleaned depending on the momentum and the amount of water. Further, even if the amount of drainage flowing into the storage tank is considerably smaller than that of the conventional siphon structure, the stored drainage can be discharged reliably and at a stretch, and a more efficient drainage device can be provided. Furthermore, since the valve lifting float operates in two stages, the valve lifting float is momentarily greatly lifted by the valve lifting float, and the instantaneous liquid drop causes the valve lifting float to move. The buoyancy of the child will not decrease. This ensures that the valve float is removed from the discharge port.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a state immediately before a valve float rises in an embodiment of a drainage device according to the present invention.

FIG. 2 is likewise a partial cross-sectional view showing a state in which the valve float is lifted and the liquid level is lowered.

FIG. 3 is a partial cross-sectional view showing a state immediately before the valve float is fitted into the discharge port.

FIG. 4 is a perspective view of a partition body 5 in FIG.

FIG. 5 is a partial cross-sectional view showing another embodiment of the drainage device in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Storage tank main body 2 ... Valve float 3 ... Valve lift float 4 ... Filament 5 ... Compartment 6 ... Rubber packing 7 ... Discharge port 8 ... Cylindrical part 9 ... Support 10 ... Shaft core adjustment plate 11 ... Inlet 12 ... Storage stand 13 ... O-ring 14 ... Lid 15 ... Micro opening 16 ... Hole 17 ... Screw

Claims (6)

[Claims] 1. An outlet (7) at the bottom and an inlet (1) at the top.
1) A storage tank main body (1), a valve float (2) provided in the storage tank main body (1) and fitted to the discharge port (7), and the valve float (2) A valve lifting float (3) located above the valve float (2) in the storage tank body (1) and connected by a thread (4), and the valve float (2) and the valve. And a partitioning body (5) arranged between the lifting float (3) and separating the floats (2) and (3),
The specific gravity of the valve lifting float (3) is such that the buoyancy of the valve lifting float (3) is applied to the valve float (2) downward water pressure and the valve float (2) and the valve lift. A drainage device, characterized in that it is set to be larger than the sum of the total weight of the float (3). 2. The drainage device according to claim 1, wherein the filamentous material (4) is supported on the axis of the discharge port (7) by the partition body (5). 3. The length of the filament (4) is such that the buoyancy applied to the valve lifting float (3) is the valve float (2).
The drainage according to claim 1, wherein the drainage is set to extend when it becomes equal to the sum of the downward water pressure applied to the valve and the total weight of the valve float (2) and the valve lifting float (3). apparatus. 4. The valve lifting float (3) has a downward water pressure applied to the valve float (2) by the buoyancy of the float (3) and the valve float (2) and the valve. Equilibrium buoyancy forming portion (3) that is in equilibrium with the total weight of the lifting float (3)
The drainage device according to claim 1, comprising a) and an excessive buoyancy forming portion (3b) that produces a buoyancy larger than the equilibrium buoyancy. 5. The filamentous material (4)
a) a float (3a) connected to a predetermined position in a), the float (3a) is lifted by receiving buoyancy, and the filament (4)
When a) is fully extended, the buoyancy is balanced by the downward force applied to the valve float (2) and the total weight of the valve float (2) and the valve lifting float (3). The drainage device according to claim 4, which is a moving float. 6. The drainage device according to claim 4, wherein the equilibrium buoyancy forming portion is formed of a small diameter portion (3a) located at a lower portion of the valve lifting float and having a smaller diameter than an upper portion (3b).