JP2968485B2 - Water discharge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a reservoir, a water tank,
The present invention relates to a water discharge device for discharging water from a reservoir such as a pool to a position relatively lower than the water surface via a conduit, and a priming method when using the water discharge device.

[0002]

2. Description of the Related Art Conventionally, as this type of water discharge device, FIG.
A water discharge device for discharging water from a reservoir 1 to a position relatively lower than the water surface via a water discharge pipe 11 as shown in FIG. It has been known that water can be discharged and stopped by opening and closing the valve 12. In this water discharge device, the valve element 1 connected to the valve rod 12c by the opening / closing mechanism 13 provided on the water surface.
The above operation was performed by raising and lowering 2a to open and close the gap with the valve seat 12b.

[0003] A water discharge device for discharging water from a reservoir 1 to a position relatively lower than the surface of the water through a water discharge pipe 11 as shown in FIG. It has been known that the water outlet 11a is guided to a plurality of places having different heights of the wall portion 1 to perform water discharge / water stoppage and water level adjustment by opening and closing a plurality of valves 12 provided therein. In such a water discharge device, an opening / closing mechanism 13 for operating each valve 12 provided on the water surface causes a valve rod 12
c is slid up and down to move the valve seat 1
The above operation was performed by opening and closing the gap with 2b.

[0004]

However, according to the water discharge device as shown in FIG. 6, it is necessary to construct the water discharge pipe 11 through the bottom of the bank or the like, and the valve 12 for opening and closing the water discharge device is also required to be provided at the bottom of the reservoir 1. Therefore, there was a problem in construction due to the large-scale construction. In addition, since the valve 12 is provided only at one location at the bottom, when the water level after water discharge is to be adjusted, it is necessary to pay close attention to the water level by always grasping the water level and adjusting the water discharge amount. In addition, valve 1
Since high water pressure was applied to No. 2, it was difficult to open and close it, and accidental water discharge due to water leakage was also likely to occur.

On the other hand, in the water discharge device shown in FIG. 7, water can be discharged from a plurality of water outlets 11a having different heights. Later water level adjustment is possible. However, the water outlet 11a and the valve 12 are plural, and the branch water outlet 11 is provided.

On the other hand, Japanese Patent Application Laid-Open No. Hei 6-322739 discloses a method of using a siphon pipe for discharging water from a reservoir. In this technique, water is present on the water discharging side and water is discharged below the water surface. Therefore, it is a usage type in which air does not flow backward to the siphon pipe, and the amount of water discharged can be changed depending on the amount of water in the reservoir, but the function of adjusting the water level after water discharge is not provided.

Accordingly, an object of the present invention is to provide
An object of the present invention is to provide a water discharge device which does not require a large-scale construction for installation and can adjust the water level of a reservoir after water discharge, and a priming method suitable for using the water discharge device.

[0008]

SUMMARY OF THE INVENTION To achieve this object, a feature of the present invention is a water discharge device for discharging water from a reservoir to a position relatively lower than the surface of the water via a conduit, wherein the conduit is connected to the reservoir. Formed as a siphon pipe straddling the wall of the reservoir, one end of which is located below the water surface of the reservoir, and the other end of the siphon pipe is adjusted by adjusting the height of an atmosphere opening part that makes the discharged water contact the atmosphere. The point is that it is connected to a water level adjusting mechanism configured to be able to adjust the water level after water is discharged. Here, the reservoir refers to a reservoir held by a wall so that water does not flow out to a relatively low position.
This is a broad concept that includes water in reservoirs, water storage tanks, pools, and the like that are stored in a closed system, as well as those that have water flows such as rivers, waterways, and the sea.

In the above structure, the water level adjusting mechanism may be any of a mechanism using a plurality of valves, a mechanism for adjusting the height of one air opening portion, and a combination thereof. The adjusting mechanism comprises a plurality of on-off valves connected to the other end side of the siphon tube, and a plurality of the atmosphere opening portions communicating with the on-off valves and located at different heights, It is preferable from the operation and effect described below.

It is preferable from the viewpoint of the operation and effect to be described later that the upstream pipes of the plurality of on-off valves are divided into smaller flow paths so as to have a smaller diameter so that air is not easily replaced.

In the above water discharge device, it is necessary to perform a priming operation using a suction pump, a water suction pump, or the like when starting water discharge, but a check valve provided at a position below the water level of the reservoir in the siphon pipe. A water supply device for supplying water in the reservoir downstream of the check valve in the siphon pipe, and an air vent that can be opened and closed by communicating with the top of the siphon pipe.
It is preferable to further include a priming mechanism consisting of:

In the case where the check valve is provided as described above, the check valve is connected to the siphon pipe downstream of the check valve and is connected to the discharge / discharge valve.
It is preferable to further include a water flow generating means for alternately generating water flows in both directions of suction from the viewpoint of the operation and effect described later.

On the other hand, the characteristic structure of the priming method of the present invention is as follows.
In the priming method for priming the water discharge device as described above, a flexible tubular body having a check valve on one end side that permits only water discharge is positioned below the surface of the reservoir, and the inside of the reservoir is degassed while being deaerated. The other end of the tubular body is positioned below the water surface of the reservoir, and one end of the tubular body is moved to a position lower than the water surface across the wall of the reservoir, and the siphon tube is One end of the tubular body is connected to the siphon pipe in a state where the downstream side is closed, and air can be bleed from the siphon pipe at a position higher than the water surface of the reservoir, and the water of the reservoir is connected to the siphon pipe by the connected tubular body. The point is to supply water to the siphon pipe.

According to the above-mentioned feature of the present invention, the conduit is formed as a siphon pipe straddling the wall of the reservoir, and one end thereof is located below the water surface of the reservoir. Once water discharge is started, water is discharged by the principle of a siphon tube until the height of the water surface of the reservoir and the height of the air opening part that makes the discharge water come into contact with the atmosphere are the same without using the power of a pump or the like. Continue naturally. And since the siphon pipe only needs to be installed so as to straddle the wall of the reservoir, there is no need to construct a pipe through the bottom of the bank or the like. Further, since the siphon pipe may be emptied except for water discharge, accidental water discharge from a valve or the like due to water pressure can be prevented. In addition, since the other end of the siphon pipe is connected to a water level adjusting mechanism, which is located outside the reservoir, there is no need to construct a valve or the like on the wall of the reservoir. Such a water level adjustment mechanism can easily adjust the water level after water discharge simply by adjusting the height of the air opening portion that makes the water discharge flow come into contact with the atmosphere. As a result, a large-scale construction for installation was not required, and a water discharge device capable of adjusting the water level of the reservoir after water discharge was provided.

Further, the water level adjusting mechanism includes a plurality of on-off valves connected to the other end of the siphon pipe, and a plurality of air opening portions communicating with the on-off valves and located at different heights. In the case where the reservoir is provided, the height of the communicating atmosphere opening portion can be changed only by operating each on-off valve, so that the water level of the reservoir after water discharge can be easily adjusted. And since each on-off valve is outside the reservoir,
It can be directly operated and does not require complicated devices such as an opening and closing mechanism including a link mechanism.

When the upstream pipes of the plurality of on-off valves are divided into smaller flow paths so as to have a structure in which air is hardly replaced, the siphon pipe for discharge is usually large in inner diameter. Therefore, especially when the flow velocity during water discharge is low or after water discharge,
It is easy for air flowing from the open air section to flow into the siphon pipe via the on-off valve to replace water and stop the function of the siphon pipe. Is less likely to occur, so that the inflow of air can be prevented immediately before the replacement, and the function of the siphon tube can be maintained satisfactorily. As a result, when the water level of the reservoir drops and the water discharge ends once, when the water level of the reservoir rises or the water discharge is started again from the water outlet provided at the lower part, the siphon pipe can be re-poured without repriming. Since the function is maintained, water can be discharged immediately.

A check valve provided at a position below the water surface of the reservoir in the siphon tube; a water supply device for supplying water in the reservoir downstream of the check valve in the siphon tube; When further provided with a priming mechanism comprising an air vent that can communicate with the top and can be opened and closed, priming can be performed on the siphon tube as follows. That is, the air vent portion is in an open state, all the on-off valves of the water level adjuster are in a closed state, and the water in the reservoir is supplied to the downstream side of the check valve in the siphon pipe by the water supply device. The space is gradually filled with water to prevent it. Then, after confirming that water is discharged from the air release section (confirmation of full water), stop the water supply device and close the air release section, and the siphon pipe will be filled with water. By opening the valve, water discharge through the siphon tube can be started. And this priming operation can be suitably used at the time of starting use of the siphon pipe, at the time of function recovery, and the like.

In the case where the apparatus further comprises a water flow generating means which is connected to the siphon pipe downstream of the check valve and alternately generates a water flow in both directions of discharge and suction, the water flow generating means includes two directions of discharge and suction. Water flow to the check valve via the siphon pipe by alternately generating the water flow of the water, so that water scale, debris, etc. that adhere to the valve body etc. of the check valve and impede its function by the water flow Can be detached,
Maintenance of the check valve is possible by remote control.

On the other hand, according to the priming method of the present invention, since a flexible tubular body is used and its arrangement and movement are easy, it can be easily positioned below the water surface of the reservoir,
The inside of the tubular body can be replaced with water while being degassed, and one end of the tubular body is lower than the water surface across the wall of the reservoir while the other end of the tubular body is positioned below the water surface of the reservoir. It can be easily moved to the position. At this time,
Since the tubular body has a check valve on one end that allows only water to flow, it prevents air from flowing in when straddling the wall, allows water to flow out of the tubular body at a position lower than the water surface, and manually opens and closes the valve. The desired operation can be performed without performing the above operation. And
By connecting one end side of the tubular body to the siphon pipe, water in the reservoir is supplied from the tubular body to the siphon pipe according to the principle of the siphon pipe. At this time, in order to close the downstream side of the siphon pipe and allow air to be released from the siphon pipe at a position higher than the water level of the reservoir, supplied water is stored in the siphon pipe, and the same as the water level of the reservoir. Until the height is reached, the siphon pipe is naturally primed. As a result, it was possible to provide a priming method for easily priming the water discharge device of the present invention without using power.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the water discharge device of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the water discharge device according to the present embodiment is a water discharge device for discharging water from a reservoir 1 to a position relatively lower than the surface of the water via a conduit, and the conduit is provided with a wall 1 a of the reservoir 1. Siphon tube 2 to straddle
And one end 2a thereof is positioned below the surface of the reservoir 1 and the other end 2b of the siphon pipe 2 is adjusted to have a water level after water discharge by adjusting the height of an atmosphere opening portion 3a for contacting the water discharge with the atmosphere. It is connected to a water level adjustment mechanism 3 configured to be adjustable.

The water level adjuster 3 includes a plurality of on-off valves 3b connected to the other end 2b of the siphon pipe 2 and a plurality of air opening portions 3a communicating with the on-off valves 3b and located at different heights. In the present embodiment, the water discharge pipe 6 communicating with the atmosphere above and the respective on-off valves 3b are connected to the pipe 3c.
And the connection between the pipe 3c and the water discharge pipe 6 substantially corresponds to the atmosphere opening part 3a. Then, each upstream side pipe portion 2c of the plurality of on-off valves 3b is densely filled with a small-diameter thin tube and divided into flow paths, so that air is not easily replaced. However, the flow path cross section is simply made finer. You may just partition. At this time, as the diameter is reduced and the length is lengthened, the effect of preventing air inflow increases, but since the pressure loss increases and the flow rate decreases, it may be appropriately designed in consideration of the discharge flow rate and the like. It is preferable that a stainless steel tube or the like having a size of about 10 mm and a length of about 2000 mm be densely filled and used.

Further, in this embodiment, the priming mechanism 4 used at the start of water discharge is provided.
A check valve 4a provided at a position below the water surface of the reservoir 1 of the siphon pipe 2; and a water supply device 4b for supplying water in the reservoir 1 downstream from the check valve 4a in the siphon pipe 2. Air vent 4c which communicates with the top of siphon tube 2 and is freely openable and closable
And is composed of Here, an electric pump or the like may be used as the water supply device 4b, but a water pump can be started using a manual pump without using electric power or the like. Further, a priming valve 4d for preventing the inflow of air or the like during water discharge is provided on the downstream side of the water supply device 4b. However, when the pump or the like used has the function, the priming valve 4d may not be provided. . Further, a strainer or the like for preventing foreign matter such as dust from flowing into the priming water may be provided near the water inlet of the water supply device 4b. Although the air vent 4c is openable and closable by opening and closing a valve, a structure using a stopper or the like may be used.

A water flow generating means 5 for alternately generating a water flow in both the discharge and suction directions is branched from the upstream side of the valve of the air vent 4c and communicates with the siphon pipe 2 downstream from the check valve 4a. Connected. As the water flow generating means 5, a diaphragm type or a piston type can be used, but those having a structure in which air does not easily flow into the inside and having an appropriately limited stroke width, in terms of maintaining its function, etc. preferable.

A strainer 7 for preventing foreign matter such as dust from flowing in is provided upstream of the check valve 4a, and a similar strainer 7 is provided downstream of the check valve 4a. ing. Further, piping supports 8 for fixing the siphon pipe 2 to a bank or the like are provided at a plurality of locations on the bank or the like.

The following describes a series of water discharging operations as described above. With the air vent 4c in the open state and all the on-off valves 3b of the water level adjuster in the closed state, the water in the reservoir 1 is supplied by the water supply device 4 downstream from the check valve 4a in the siphon pipe 2. Then, since the check valve 4a prevents the backflow, the space is gradually filled with water. Then, it is confirmed that water is discharged from the air vent 4c (confirmation of full water), and then the water supply device 4b is stopped and the air vent 4c is closed, so that the inside of the siphon pipe 2 is filled with water. Become. By opening one of the on-off valves 3b, water discharge through the siphon pipe 2 can be started. Then, once the water discharge is started, the water surface height of the reservoir 1 and the height of the atmosphere opening part 3a for contacting the water discharge with the atmosphere are the same without using the power of a pump or the like by the principle of the siphon pipe. Until then, the water discharge continues naturally. And any open / close valve 3
Although the water level after water discharge can be adjusted by opening b, water discharge may be stopped by closing the on-off valve 3b before water discharge stops naturally.

According to the above-described embodiment, once water discharge is started using the priming mechanism, the height of the water surface of the reservoir and the height of the open-air portion for bringing the discharged water into contact with the atmosphere are increased by the principle of the siphon pipe. Water discharge continues naturally until the same. Then, the siphon pipe need only be installed so as to straddle the wall of the reservoir, accidental water discharge from a valve or the like can be prevented, and there is no need to construct a valve or the like at the bottom of the reservoir. Further, the water level after water discharge can be easily adjusted, the inflow of air can be prevented, and the function of the siphon tube can be maintained well. Further, maintenance of the check valve is possible by remote control. As a result, a large-scale construction for installation was not required, and a water discharge device capable of adjusting the water level of the reservoir after water discharge was provided.

[Another Embodiment] Another embodiment will be described below. (1) In the above embodiment, the water level adjusting mechanism includes a plurality of on-off valves located at different heights, and connects the water discharge pipe and each of the on-off valves with each other using a pipe, and the connection portion is open to the atmosphere. In the example shown in FIG. 2, a plurality of on-off valves 3b are provided at the same height as shown in FIG.
A configuration may be adopted in which the water discharge pipes 6 having different heights are connected to b, and the ends of the water discharge pipes 6 correspond to the atmosphere opening portions 3a. In this case, it is more preferable to divide each of the water discharge pipes 6 so as to have a smaller diameter so that the water is hardly replaced by air. Further, a groove or the like for guiding water from each water discharge pipe 6 to one place may be further provided, and it may be constituted by a conduit, and an atmosphere opening part 3a may be formed at a connection portion with each water discharge pipe 6. Good. With such a configuration, the same operation and effect as those of the previous embodiment can be obtained.

(2) In the above embodiment, an example is shown in which the water level adjusting mechanism adjusts the height of the atmosphere opening portion for bringing the discharged water into contact with the atmosphere by opening and closing a plurality of on-off valves. As described above, the other end of the siphon tube 2 is connected to one on-off valve 3b, an L-shaped tube 3f is further connected to the on-off valve 3b, and the tip portion is made to be a rotary connection portion 3d, and an S-shape is connected thereto. Tube 3
e may be further connected to communicate. In that case, S
The end of the S-shaped tube 3e corresponds to the open-to-atmosphere portion 3a. However, the structure in which the vicinity of the end of the S-shaped tube 3e is divided into smaller channels so that the air is hardly replaced is described above. Are more preferable. In addition, the rotation connecting portion 3d is an S-shaped tube 3e.
It is preferable that the rotation angle can be kept constant, and a drive mechanism for rotating the S-shaped tube 3e may be further provided. According to such a configuration, by rotating the S-shaped tube 3e about the rotation connecting portion 3d, the atmosphere opening portion 3 is formed.
The height of a can be adjusted, whereby the water level after water discharge can be adjusted.

(3) In the above embodiment, an example is shown in which only a strainer for preventing the inflow of foreign matter is provided on the upstream side of the check valve. However, as shown in FIG. On the side (upstream side), a flexible tubular body 9 such as a flexible tube
May be connected, and a cord 9a may be connected to the tubular body 9 and guided to above the water surface (for example, above a bank or the like). According to such a configuration, even when foreign matter such as mud or dirt is clogged in the inside of the tubular body 9 on the upstream side of the strainer 7, the foreign matter inside the tubular body 9 is pulled by pulling the cordage 9a on the water surface to shake the tubular body 9. Draining can restore the function of the water discharge device.

(4) In another embodiment (2), an example is shown in which the S-shaped pipe is connected and connected via the rotary connecting part, and the height of the atmosphere opening part is adjusted by rotating the S-shaped pipe. However, a configuration may be adopted in which a flexible tubular body such as the above-described flexible tube is connected, and the height of the atmosphere-opening portion is adjusted by vertically moving the distal end of the tubular body. According to this configuration, since the flexible tubular body is used, the degree of freedom in adjusting the height of the atmosphere opening portion is further increased. In addition, by forming one end 2a of the siphon pipe 2 in FIG. 1 into a flexible tubular body such as a flexible pipe in the same manner as described above, the siphon pipe 2 can be connected to a reservoir having an irregularly shaped inner wall surface such as a reservoir. No special bending process is required.
Construction becomes easier.

(5) In the above embodiment, an example was shown in which the siphon tube 2 is supported above the bank or the like with an interval, but a part or all of the siphon tube 2 may be embedded in the bank or the like.

(6) In the above embodiment, an example is shown in which a priming mechanism for filling the inside of the siphon pipe is provided. However, a priming siphon pipe smaller in diameter than the siphon pipe is separately provided, and first the priming siphon pipe is provided. After filling the siphon pipe with water, the siphon pipe may be used as the water supply device to fill the siphon pipe with water up to the water level of the reservoir, and then the on-off valve may be opened to discharge water. At this time, immediately after the water discharge, air is present at the straddling portion in the siphon pipe (a portion higher than the water level of the reservoir near the top), but in order to efficiently discharge this downstream to the water discharge, It is preferable that the straddling portion is divided into flow paths so as to have a smaller diameter so that the air can easily move downstream without being replaced in the pipe. According to this configuration, the amount of water required for priming the priming siphon tube can be reduced, and the priming siphon tube can prime the siphon tube, thereby requiring less power.

(7) The priming method of the present invention is a priming method for priming the water discharge device as described above, in which the above-described operation is performed. explain. FIG. 5 shows one end 4 of the tubular body 4h.
FIG. 3 is a diagram showing a state in which n is connected to a siphon tube 2, and a series of operations will be described as follows. First, a flexible tubular body 4h having a check valve 4i at one end 4n that allows only water to flow is positioned below the water surface of the reservoir 1, and the inside thereof is degassed and replaced with water. Next, the other end 4m of the tubular body 4h
Is positioned below the water surface of the reservoir 1 and the one end 4n of the tubular body 4h is moved across the wall 1a of the reservoir 1 to a position lower than the water surface. Then, the on-off valve 3b on the downstream side of the siphon pipe 2 is closed, and one end 4n of the tubular body 4h is connected to the siphon pipe 2 with the air vent valve 41 provided at a position higher than the water surface of the reservoir so that air can be released from the siphon pipe 2.
The water in the reservoir 1 is supplied to the siphon pipe 2 by the connected tubular body 4h.

In this embodiment, one end 4n of the tubular body 4h is connected to the bottom of the siphon tube 2 via a one-touch joint 4j which can be connected with one touch at the time of connection and does not leak water from the siphon tube 2 when detached. I have. By using such a one-touch joint 4j,
Although connection is easy and water does not easily leak, the priming method of the present invention can be implemented using other connection mechanisms. In addition, a large-diameter reservoir 4k is located at a lower position on the downstream side of the siphon pipe 2.
Since a large amount of water in the large-diameter reservoir 4k is discharged at the time of water discharge after priming, the air existing at the straddling portion in the siphon pipe 2 is discharged to the downstream side during water discharge. Can be discharged well. According to the above embodiment,
A priming method for easily priming without using power in the water discharge device of the present invention can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a water discharge device.

FIG. 2 is a diagram illustrating a main part of a water discharge device according to another embodiment;
(A) is a front view, (B) is a side view

FIG. 3 is a diagram illustrating a main part of a water discharge device according to another embodiment;
(A) is a front view, (b) is a perspective view

FIG. 4 is a front view showing a main part of a water discharge device of another embodiment.

FIG. 5 is a diagram for explaining a priming method.

FIG. 6 is a longitudinal sectional view showing a conventional water discharge device.

FIG. 7 is a longitudinal sectional view showing a conventional water discharge device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reservoir 1a Wall part 2 Siphon pipe 2a One end 2b Other end side 3 Water level adjustment mechanism 3a Atmospheric opening part 3b Open / close valve 4 Priming mechanism 4a Check valve 4b Water supply device 4c Air vent part 5 Water flow generating means

Claims (6)

(57) [Claims] 1. A water discharge device for discharging water from a reservoir to a position relatively lower than the water surface via a conduit, wherein the conduit is formed as a siphon tube straddling a wall portion of the reservoir, and one end thereof is formed. While being located below the surface of the reservoir, the other end of the siphon pipe is connected to a water level adjustment mechanism configured so that the water level after water discharge can be adjusted by adjusting the height of an air opening part that makes the water discharge flow and the atmosphere contact. Water discharge device. 2. The water level adjustment mechanism comprises: a plurality of on-off valves connected to the other end of the siphon pipe; and a plurality of the air opening portions communicating with the on-off valves and located at different heights. The water discharge device according to claim 1, further comprising: 3. The water discharge device according to claim 2, wherein the upstream pipes of the plurality of on-off valves are divided into smaller flow paths so as to have a smaller diameter so that air is not easily replaced. A check valve provided at a position below the surface of the reservoir of the siphon pipe; a water supply device for supplying water in the reservoir downstream of the check valve in the siphon pipe;
The water discharge device according to any one of claims 1 to 3, further comprising a priming mechanism including an air vent portion that is openable and closable in communication with a top portion of the siphon tube. 5. The water discharge device according to claim 4, further comprising a water flow generation means connected to the siphon pipe downstream of the check valve to generate water flow in both directions of discharge and suction alternately. 6. A priming method for priming a water discharge device according to any one of claims 1 to 3, wherein a flexible tubular body having a check valve on one end side that allows only outflow is provided below the surface of the reservoir. Position, replacing the inside with water while degassing the inside thereof, while locating the other end of the tubular body below the surface of the reservoir and straddling one end of the tubular body across the wall of the reservoir. Move to a position lower than the water surface, close the downstream side of the siphon tube, and connect one end of the tubular body to the siphon tube in a state where air can be bleed from the siphon tube at a position higher than the water surface of the reservoir, A priming method for supplying water from the reservoir to the siphon pipe by the connected tubular body.