JP2000170696A - Water supply device having refuse eliminating function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water supply device having refuse eliminating function facilitating the maintaining of a pump, resisting breaking down, and being capable of rapidly starting the pump. SOLUTION: This water supply device for supplying water from natural water sources to a requested location comprises an introducing part arranged so as to sink in the water sources and into which water is introduced, a pump 3 sucking the water through the introducing part, and a refuse eliminating system 4 provided between the introducing part and the pump 3 for eliminating refuse in the water introduced from the introducing part. Between the introducing part and the eliminating system, a priming water supply system 5 for always filling a pipe line upstream from at least the pump 3 with priming water is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply device having a dust removing function. More specifically, the present invention relates to a water supply device provided with a dust removal function, which is used for supplying water from a natural water source such as a river to a snow removal nozzle provided on a road to melt snow on a road surface.

[0002]

2. Description of the Related Art Conventionally, in a snowfall area or the like, a water supply device for spraying water on a road surface to melt snow has been used in order to prevent road traffic from being hindered by snow accumulation. Further, in the conventional water supply device, there is a water supply device using a natural water source such as a river as a water source because of low cost and no fear of drought.

[0003] Such a water supply device is used by submerging the pump in a water source similarly to a conventional construction pump or the like, and removes dust and the like contained in the water to be sucked downstream of the pump. Removal mechanism is connected.

[0004]

However, in the conventional water supply device, since the pump is disposed submerged in the water source, it takes time and labor for maintenance such as repair. Further, since not only water but also dust is pumped from the water source, there is a disadvantage that the inside of the pump is broken down by dust.

On the other hand, it is conceivable to install the pump above the water source. In that case, before the pump is started, since there is no water inside the pipe in the section having a height difference from the water surface of the water source to the pump, the operator must manually fill the priming water by operating the valve. It takes time and time to start the pump.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and provides a water supply apparatus having a dust removing function which allows easy maintenance of the pump, has few troubles, and can start the pump quickly. The purpose is to:

[0007]

SUMMARY OF THE INVENTION A water supply device having a dust removing function according to the present invention is a water supply device for supplying water from a natural water source to a desired location, and is provided submerged in the water source. Introduced portion into which water is introduced, a pump for sucking water through the introduced portion, provided between the introduction portion and the pump, and removes dust in the water introduced from the introduction portion. A removing mechanism for removing, between the introduction part and the removing mechanism, characterized in that at least a priming supply mechanism for constantly filling the priming water in a pipe upstream of the pump is provided. is there.

The priming water supply mechanism comprises: (a) a priming tank; (b) a priming pump for sucking priming water into the priming tank; and (c) a priming water level in the priming tank having a predetermined priming level. It is preferable to include a water level sensor for detecting whether or not a pump start water level has been reached and whether or not a predetermined priming pump stop timer has been activated.

[0009] It is preferable that at least a part of the piping on the downstream side of the pump is located above the pump.

[0010] It is preferable that the introduction section has a strainer which covers a suction port portion of a suction pipe.

It is preferable that the apparatus further comprises an aeration mechanism for back-washing the strainer by feeding air into the strainer.

[0012] It is preferable that a suction port portion of a pipe on an upstream side of the priming supply mechanism is disposed inside the strainer.

[0013] The pump may be more than 0.1 mm above the water level of the water source.
It is preferable to be installed about 1 to 7 m above.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a water supply apparatus having a dust removing function according to the present invention will be described in detail with reference to the drawings.
1 is a perspective explanatory view showing a main configuration of a water supply apparatus according to an embodiment of the present invention, FIG. 2 is a plan explanatory view of the water supply apparatus of FIG. 1, and FIG. 3 is a sectional explanatory view of a priming supply mechanism of FIG. 4 is an explanatory cross-sectional view showing an example of a pipe near an introduction portion applied to the water supply device of FIG. 1; FIG. 5 is a partially enlarged cross-sectional view of the introduction portion of FIG. 4;
5 is an enlarged sectional view of the strainer of FIG. 5, FIG. 7 is a sectional explanatory view of a removing mechanism of the water supply device of FIG. 1, and FIG. 8 is a sectional explanatory view of the air release unit of FIG.

As shown in FIGS. 1 to 8, the water supply system of the present embodiment is roughly divided into a ground unit 1 (FIGS. 1 to 2).
(See FIGS. 4 and 5) and an introduction part 2 (see FIGS. 4 and 5) disposed submerged in water of a natural water source.

First, the ground unit 1 will be described.

As shown in FIGS. 1 and 2, the ground unit 1 has a pump 3 for sucking water from a water source from the inlet 2 through pipes 51 and 52, and a pump 3 for removing dust from the sucked water. , A priming water supply mechanism 5 for filling priming water inside the pipes 51 and 52 between the pump 3 and the water surface of the water source, and an aeration mechanism 6 for sending air through the pipe 53 to the introduction section 2. And a control panel 7. Also, of the piping of the ground unit 1,
Valves A are provided for pipes 54, 57 and 58 where air easily accumulates.
Is provided. The ground unit 1 configured as described above is housed in a case C made of steel or the like.

Pump 3 and removal mechanism 4 (see FIG. 7)
Is conventionally used, and is usually installed at a position higher than the water surface of the water source by about 0.1 to 7 m (above the ground, on a dike, on a floodgate, on a gantry, etc.). However, it can be installed at a position equal to or lower than the water surface of the water source. In short, it may be installed outside the water source.

Between a pipe 51 and a pipe 52, which is a main suction pipe on the upstream side (suction side) of the pump 3, a removing mechanism 4 is provided.
Are arranged. On the downstream side (discharge side) of the pump 3,
A pipe 54 is connected. Further, at the downstream end of the pipe 54, a pipe 55, which is a main discharge pipe connected to a snow removal nozzle (not shown) provided on the road, and a pipe for confirming a drainage state at the time of start-up. 56 are branched and connected.

The priming supply mechanism 5 is a mechanism for always filling at least the piping 51, 52 on the upstream side of the pump between the introduction part 2 and the removing mechanism 4.

The priming supply mechanism 5 of the present embodiment is similar to that of FIG.
Priming tank 9 and priming tank 9
A priming pump 10 for sucking priming water therein and a priming water level in the priming tank 9 correspond to a predetermined priming pump starting water level S for starting the priming pump 10.
T and a water level sensor 11 for detecting whether or not a predetermined pump stop timer operation water level SP has been reached.

The priming tank 9 has an inner capacity of 0.07-0.
About 1 m ³ (diameter 200mm~300mm about, height 1
(Approximately 1.5 m), and is placed on a gantry 12 having a height of approximately 0.5 to 1 m. A priming pump 10 is connected to a bottom plate 9a of the priming tank 9 via a vibration isolating joint 13, and a top plate 9b of the priming tank 9 has the removing mechanism 4 attached thereto.
A pipe 54 is connected to the pipe 51 on the upstream side of the pipe.

In the present embodiment, as shown in FIG. 5, the suction side end 60a of the suction pipe 60 of the priming pump 10 is connected to the inside of the introduction section 2 (specifically, the strainer 14). (Inside), but may be connected to another system of priming water supply source (for example, fire hydrant, etc.).

As the water level sensor 11, as shown in FIG. 3, various sensors for detecting the water level at the priming pump start water level ST and the pump stop timer operation water level SP by a lower terminal 11a and an upper terminal 11b are used. For example, an electric sensor or the like that detects a change in conductivity is used.

The control panel 7 shown in FIGS. 1 and 2 controls the priming pump 10 based on a water level detection signal from the water level sensor 11. Specifically, the lower terminal 11a of the water level sensor 11 is controlled by a control panel 7 equipped with a CPU and the like.
When the water level in the priming tank 9 is reduced due to spontaneous evaporation, water leakage due to the aging of the priming pump 10 and the priming pump start water level ST is detected, the priming pump 10 is started, and the pump stop timer is started. After operating for a predetermined time, for example, about 30 to 60 seconds after the water level reaches the working water level SP, the priming pump 10 is stopped. On the other hand, during normal operation, when the priming pump 10 is started by the start signal of the present apparatus, and when it is detected by the upper terminal 11b of the water level sensor 11 that the water level inside the priming tank 9 has reached the pump stop timer operation water level SP. Then, the pump stop timer is activated, and after a predetermined time (for example, one minute), the priming pump 10 is stopped,
Next, the pump 3 is started.

With this configuration, since the pump 3 and the removing mechanism 4 are arranged outside the water source such as the ground above the water source, the maintenance of the pump 3 and the removing mechanism 4 is very easy.

Further, since the removal mechanism 4 for removing dust contained in water is provided on the upstream side of the pump 3, there is no problem that the dust flows into the pump 3.

When the water supply device of the present embodiment is operated, when a main drive signal is given to the water supply device, the pump stop timer operation water level S in the priming tank 9 is provided as described above.
The priming pump 10 is operated for a predetermined time from the state of P, and water in the priming tank 9 is supplied through the pipe 54 to the pipe 5.
And the filling mechanism 4, the pipe 52, the inside of the pump 3, the section from the pump 3 to the air vent unit 8 in the pipe 54, and the entire pipe 57.
After a predetermined time has elapsed, the priming pump 10 is stopped,
Thereafter, the pump 3 is started. Thereby, water from the water source is supplied in the order of the pipe 51, the removing mechanism 4, the pipe 52, the pump 3, the pipe 54, and the pipe 55, and finally from a snow-melting nozzle (not shown) provided on the road to the road. Sprinkle water.

As described above, since the priming water supply mechanism 5 can automatically supply the priming water to at least the pipe 51 on the upstream side of the pump 3 before starting the pump 3, the operator can supply the priming water. In addition, the pump 3 can be quickly operated to sprinkle water.

If the priming water supply mechanism 5 always keeps the pipe upstream of the pump full, the water can be sprinkled at any time.

As shown in FIG. 2, when starting the pump 3, in order to check whether or not water is being supplied to the water supply device, the valve 55a of the pipe 55 is closed and the pipe 5 is closed.
If the valve 56a of No. 6 is opened, it can be easily confirmed. After confirmation, if the valve 55a is opened and the valve 56a is closed, normal watering operation can be performed.

Further, as shown in FIG. 1, in the present embodiment, at least a part of the pipe on the downstream side of the pump 3, for example, the pipe 54 in FIG. The pipe is bent so as to be convex upward. Therefore, when the priming water is supplied by the priming water supply mechanism 5, the section on the upstream side of the pump 3 including the pump 3 can be filled with water.

The introduction part 2 submerged in the water source is shown in FIG.
As shown in FIGS. 6 to 6, a strainer 14 for covering the suction port portion 51a of the pipe 51 is provided. The strainer 14
A plurality of ring-shaped wires 14a having a triangular cross section, and two wires 14a fixedly connected to the inner peripheral surface of the wires 14a.
A rod 14b for connecting the two, and a mesh-shaped bottom cover 14
c.

The wire 14a is, as shown in FIG.
It has a triangular cross section in which the thickness decreases from the outside to the inside, and two adjacent wires 14a form a slight gap 14d. Therefore, gap 1
Water from a water source can be introduced into the strainer 14 through 4d. On the other hand, relatively large dust and fallen leaves contained in the water cannot pass through the gap 14d, and therefore are prevented from entering on the outer peripheral surface of the wire 14a.

Further, in this embodiment, since the aeration mechanism 6 as shown in FIGS.
a (see FIG. 1), the strainer 1 is drawn through the pipe 53 and the ring-shaped air nozzle 15 (see FIG. 5).
The backwashing of the strainer 14 can be performed by pumping air into the inside 4 to generate a large amount of air bubbles and removing dust and the like attached to the outer peripheral surface of the wire 14a with the air bubbles. The air bubbles generated from the air nozzle 15 have an effect of stirring the deposit at the bottom of the water source.

The operating time of the aeration mechanism 6 is set such that the compressed air generated by the aeration mechanism 6 is sucked into the pipe 51 when the pump 3 is operating. It is preferable that the pump 3 is stopped, and it is more preferable that the compressed air be sent intermittently, so that a certain amount of dust is removed from the outer peripheral surface of the wire 14a.

As the removing mechanism 4, various conventionally used dust removing mechanisms are employed. Removal mechanism 4 of the present embodiment
As shown in FIG. 7, water from a water source introduced from a pipe 51 is filtered by a filter 4a to supply clean water to a pipe 52. The removing mechanism 4 can filter water introduced from the pipe 51 while always performing reverse cleaning of the filter 4a.
Specifically, the filter 4a is fixed to the rotary cylinder 4b, and the rotary cylinder 4b is rotationally driven by a motor 16 (see FIG. 1) via an output shaft 4c held by a bearing 4d. Backwashing is performed by spraying water pumped through the pipe 57 from the inside toward the outside of the filter 4a. Dust or the like that has come off from the filter 4a due to the back washing is discarded to the outside through the pipe 58 or 59.

The ring-shaped sealing tip 4f of the sealing material 4e fixed to the lower peripheral edge of the rotary cylinder 4b is
No dust flows into the pipe 52 because it is in liquid-tight contact with the ring-shaped seal receiver 4g provided at the opening end of the second. Furthermore, since the upper space of the fixed cylinder 4h is partitioned by the ring-shaped dust stopper 4i, dust does not adhere to the output shaft 4c.

The top plate 4j of the removing mechanism 4 is provided with an air venting unit 8. The air release unit 8
As shown in FIG. 8, it is constituted by a check valve 8a and a chamber portion 8b covering the check valve 8a.

As shown in FIG. 8A, before the pump 3 is started, the priming pump 10 supplies priming water to the inside of the fixed cylinder 4h of the removing mechanism 4 via the priming tank 9. During this operation, air is released from the fixed cylindrical body 4h to the outside through the chamber portion 8b of the air release unit 8 and the discharge type 8c. On the other hand, FIG.
As shown in (b), when the inside of the fixed cylinder 4h is filled with water and overflows, the water is also filled in the chamber portion 8b of the air release unit 8. Therefore, the check valve 8a
In addition to the air check action described above, the flow of air into the fixed cylinder 4h can be prevented by the water inside the chamber 8b.

In this embodiment, a solenoid valve 8d is provided to more reliably prevent the backflow of air. The electromagnetic valve 8d opens when the priming pump 10 is operating, and is linked with a timer for controlling the operation of the priming pump 10 so that the electromagnetic valve 8d closes when the priming pump 10 stops. Open / close control may be performed.

Further, the air venting unit 8 is closed when priming is performed in order to prevent air from entering the removing mechanism 4.

[0043]

According to the present invention, the pump is installed outside the water source such as the ground above the water source, and the dust removing mechanism is installed upstream of the pump, so that the pump can be maintained. Easy management and few failures.

Further, since the removing mechanism is also installed outside the water source such as on the ground above the water source, the maintenance of the removing mechanism is easy and there are few failures.

In addition, since the priming water supply mechanism can automatically supply priming water to the pipe upstream of the pump before the pump operates, the pump can be started quickly.

Also, if the piping on the upstream side of the pump is always kept full by the priming supply mechanism, water can be sprinkled at any time.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view showing a main configuration of a water supply device according to an embodiment of the present invention.

FIG. 2 is an explanatory plan view of the water supply device of FIG. 1;

FIG. 3 is an explanatory sectional view of the priming supply mechanism of FIG. 1;

FIG. 4 is an explanatory sectional view showing an example of a pipe near an introduction portion applied to the water supply device of FIG. 1;

FIG. 5 is a partially enlarged cross-sectional view of the introduction section of FIG. 4;

6 is an enlarged sectional view of the strainer of FIG.

FIG. 7 is an explanatory sectional view of a removing mechanism of the water supply device in FIG. 1;

FIG. 8 is an explanatory sectional view of the air release unit of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground unit 2 Introductory part 3 Pump 4 Removal mechanism 5 Priming water supply mechanism 6 Aeration mechanism 7 Control panel 8 Air release unit

[Procedure amendment]

[Submission date] September 21, 1999 (September 9, 1999
1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Wherein said strainer inside by pumping air water supply apparatus further comprising comprising claim 1, wherein the aeration mechanism for backflushing of the strainer.

Wherein said pump is claim 1 comprising installed in 0.1~7m about above the water surface of the water source,
3 or 4 water supply device as claimed.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

SUMMARY OF THE INVENTION A water supply device having a dust removing function according to the present invention is a water supply device for supplying water from a natural water source to a desired location, and is provided submerged in the water source. Introduced portion into which water is introduced, a pump for sucking water through the introduced portion, provided between the introduction portion and the pump, and removes dust in the water introduced from the introduction portion. A priming supply mechanism for always filling priming water in at least a pipe upstream of the pump between the introduction section and the removal mechanism , wherein the introduction section includes a suction mechanism. Pipe suction for
A strainer covering the inlet portion, and inside the strainer
The suction port of the piping on the upstream side of the priming supply mechanism
Those characterized by comprising disposed.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Deleted

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Deleted

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0045

[Correction method] Change

[Correction contents]

In addition, the priming water supply mechanism can automatically supply clean priming water to the pipe upstream of the pump before the pump is operated, so that the pump can be started quickly and reliably .

Claims (7)

[Claims] 1. A water supply device for supplying water from a natural water source to a desired location, wherein the water supply device is submerged in the water source and into which water is introduced. A pump for sucking in, and a removal mechanism provided between the introduction section and the pump, for removing dust in water introduced from the introduction section, the introduction section and the removal mechanism; In the meantime, a water supply device having a dust removal function in which a priming water supply mechanism for constantly filling at least the piping upstream of the pump with priming water is provided. 2. The priming supply mechanism comprising: (a) a priming tank; (b) a priming pump for sucking priming water into the priming tank; and (c) a priming water level in the priming tank. 2. The water supply device according to claim 1, further comprising a water level sensor for detecting whether or not the priming pump has reached a starting water level and whether or not a predetermined priming pump stop timer has been activated. 3. The water supply device according to claim 1, wherein at least a part of a pipe on a downstream side of the pump is located above the pump. 4. The water supply device according to claim 1, wherein the introduction portion has a strainer that covers a suction port of a suction pipe. 5. The water supply device according to claim 1, further comprising an aeration mechanism for feeding back air to the inside of the strainer to backwash the strainer. 6. The water supply device according to claim 4, wherein a suction port portion of a pipe on an upstream side of the priming supply mechanism is disposed inside the strainer. 7. The pump according to claim 1, wherein the pump is installed about 0.1 to 7 m above the water surface of the water source.
The water supply device according to 3, 4, 5, or 6.