JPH0567339B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for preventing blockage of a water spray nozzle in a water sprinkler used in a filter cloth cleaning device, a car washing device, a defoaming device for a tank, etc., and the method thereof. Regarding equipment.

[Conventional technology]

Conventionally, when the sprinkler nozzles become clogged with suspended solids such as scale, slime, or rust in the watering water, and the functionality of the sprinkler system deteriorates, the clogged nozzles are manually removed one by one. It was common practice to clean with wire, etc.

Furthermore, what is called a self-cleaning nozzle has also been conventionally used. This will be outlined with reference to FIGS. 9A and 9B. 9A and 9B, the self-cleaning nozzle 34 is shown attached to the sprinkler pipe 30 of the sprinkler device. In FIG. 9A, the state of the self-cleaning nozzle 34 during water sprinkling is shown. Further, in FIG. 9B, the state of the self-cleaning nozzle 34 during cleaning is shown. This self-cleaning nozzle 34 is configured such that the size of the injection port, that is, the opening 35 of the nozzle body 31 is movably changed. A piston nozzle 32 is slidably housed within the nozzle body 31, and a return spring 33 is disposed between the nozzle body 31 and the piston nozzle 32.

[Problem that the invention seeks to solve]

However, manual cleaning of the sprinkler nozzles of sprinklers is often done while the sprinkler is in operation, resulting in undesirable conditions such as workers being exposed to water droplets, resulting in safety and environmental hygiene concerns.
If there are various problems and the sprinkler nozzle is placed in a location that is out of reach of the worker, stop the sprinkler system, temporarily suspend watering, and remove the entire sprinkler pipe with the sprinkler nozzle attached. There was a problem that the water nozzle had to be cleaned.

On the other hand, in the case of conventionally used self-cleaning nozzles as shown in FIGS. 9A and 9B, since the injection port of the nozzle body 31 is movable, The shape of the opening 35 formed by the nozzle body 31 and the piston nozzle 32 is not constant, making it difficult to spray water uniformly. Regarding the pressure, it requires approximately 20 to 50% more water volume and water spray pressure, and it is more expensive than general water spray nozzles, and it is difficult to use it in water sprinkler equipment that has a large number of water spray nozzles. It had the following problems.

[Means for solving problems]

In order to achieve the above object, the present invention is configured as follows. That is, the first invention of this application is a method for preventing clogging of a water sprinkling nozzle, which prevents clogging of a water sprinkling device equipped with a large number of water sprinkling nozzles due to blockages such as debris, in which a pressure water supply line for supplying pressure water is The sprinkler water supply line that supplies water to the sprinkler device and the ejector water supply line that supplies pressure water to the driving side of the ejector are branched, and the supply of pressure water to the sprinkler device is temporarily stopped and the pressure water is supplied to the ejector water supply line. The present invention relates to a method for preventing clogging of a water sprinkling nozzle, characterized in that the water sprinkling nozzle is fed, the ejector is driven, and the suction force of the ejector is used to suction and remove obstructions such as dust present in the water sprinkling device.

Furthermore, this method for preventing blockage of a water spray nozzle includes providing a removing means for removing blockages such as dirt on the suction side of the ejector to prevent blockages such as dirt from being sucked into the ejector.

The second invention of this application also provides a pressure water supply line to which pressure water is supplied, a sprinkler water supply line and an ejector water supply line branched from the pressure water supply line, and a pressure water supply line through which the sprinkler water supply line is supplied. and an ejector that supplies pressurized water to the drive side through the ejector water supply line, and the pressure water is supplied to the sprinkler water supply line and the ejector water supply line. The present invention relates to a water sprinkling nozzle blockage prevention device configured to be switchable and characterized in that a drain suction line of the water sprinkling device is communicated with a suction side of the ejector.

Furthermore, this sprinkler nozzle blockage prevention device is provided with a removing means for removing blockages such as dust from the drain suction line.

Further, in this sprinkler nozzle blockage prevention device, a sprinkler water supply valve is provided on the sprinkler water supply line, and an ejector water supply valve is provided on the ejector water supply line.

Moreover, this sprinkler nozzle blockage prevention device is provided with a sprinkler device drain valve on the drain suction line.

Further, in this water spray nozzle blockage prevention device, the water spray device has a means for reversing the water spray nozzle either downward or upward, and when the ejector is suctioning, the water spray nozzle is turned upward by the means. It is a reversal.

Further, in order to suck the nozzle cleaning water through the water sprinkling nozzle when the ejector is suctioned, the water sprinkling nozzle blockage prevention device is provided with a movable gutter for nozzle cleaning water with respect to the water sprinkling nozzle. This is what is being done.

[Effect]

According to this invention, when the sprinkler nozzle is blocked during operation of the sprinkler device and the function of the sprinkler device is reduced, the supply of pressurized water to the sprinkler device is stopped and the pressure water is supplied to the drive side of the ejector. do. The ejector has a structure that generates a vacuum on the suction side when pressurized water is supplied to the drive side, that is, the injection nozzle, and since the drain suction line of the water sprinkling device is connected to the suction side of the ejector, at this time, the water sprinkling When the device drain valve is opened, the dust or the like that is clogging the water spray nozzle is suctioned away into the water spray device, and is sucked into the ejector together with the liquid remaining in the water spray device.

By the way, since the vacuum generating section, that is, the throat section of the ejector is quite narrow, dirt and the like flowing there from the suction side easily become clogged. Therefore,
If a means for removing obstructions such as dirt in the water sprinkling device, such as a strainer, a screen, or a cyclone, is provided between the water sprinkling device and the suction line of the ejector, the throat portion of the ejector can be Prevents clogging with dirt, etc.

Blockage of the water spray nozzle is caused by suspended matter such as scale, slime, and rust in the pipes in the water spray being pressed against the opening of the water spray nozzle by the pressure of the pressure water. It can be easily removed by suctioning it.

By the way, since pressure water is always supplied to the sprinkler device, if this is supplied to the drive side of the ejector, a suction force will be generated on the suction side. This suction force can be used to remove obstructions such as dust that are clogging the water nozzle.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method and apparatus for preventing blockage of a water spray nozzle according to the present invention will be described below with reference to the drawings.

In FIG. 1, a water spray nozzle anti-occlusion device according to the present invention is designated by the reference numeral 1, and is capable of achieving the water spray nozzle anti-occlusion method according to the present invention. Generally, the sprinkler device 2 has a plurality of sprinkler nozzles 11 attached to a sprinkler pipe 12 or a similar piping material. Pressurized water is supplied from a tank 10 to the water spraying device 2 through a pressure water supply line 13 by a pressure pump 8, and then the liquid is sprayed from a watering nozzle 11 to a predetermined location and device.

Pressure water supply line, that is, pressure water supply line 13
Usually, a strainer 9 or the like is installed for removing bulky garbage. This pressure water supply line 13 is a sprinkler device water supply line 1 that supplies pressurized water to the sprinkler device 2 disposed in a large number of sprinkler nozzles 11.
7 and an ejector water supply line 18 that supplies pressurized water to the driving side of the ejector 3.

The sprinkler device water supply line 17 has a sprinkler device water supply valve 7.
is installed, and an ejector nozzle water supply valve 6 is installed in the ejector water supply line 18. Furthermore,
Connect the drain suction line 19 of the water sprinkler 2 to the ejector 3.
It communicates with the suction side 24 (see Figure 2) of the.

In addition, the drain suction line 19 has an ejector 3.
A means 4 for removing obstructions such as dust, such as a strainer, a screen, a cyclone, etc., is provided on the suction side 24 of the suction side 24 to remove obstructions such as dust. Moreover, the drain suction line 19, in other words, the suction side 24 of the ejector 3 has a water sprinkler drain valve 5.
is provided.

The details of the ejector 3 are shown in FIG. The ejector 3 consists of an ejector body 26 having an inlet for pressurized water on the drive side 25, an inlet on the suction side 24, and an outlet on the discharge side 27. An injection nozzle 23 is installed within the ejector body 26, and the injection nozzle 23 opens toward a throat 21 formed within the ejector body 26. The ejector water supply line 18 is connected to the drive side 25 of the ejector 3.
and the drain suction line 19 is connected to the ejector 3.
is connected to the suction side 24 of the pump, and the outlet of the discharge side 27 communicates with the drain line 20.

By the way, in general, even if a strainer 9 or the like is installed in the pressure water supply line 13, the water nozzle 11 may be damaged due to scale, slime, rust, etc. generated in the piping.
The water supply function gradually becomes clogged and the water spraying function decreases. When the water spray nozzle 11 becomes clogged, the water sprayer water supply valve 7 leading to the water sprayer 2 is closed, the ejector nozzle water supply valve 6 of the ejector water supply line 18 leading to the ejector 3 is opened, and pressure water is supplied from the pressure water supply line 13 to the ejector. Water is supplied to the drive side 25 of the ejector 3 through the water supply line 18 .

At this time, if the drain valve 5 of the water sprinkling device 2 is opened, the dirt, dust, etc. that are clogging the water sprinkling nozzle 11 are sucked together with the liquid by the ejector 3 through the drain suction line 19 to the suction side 24 of the ejector 3. , garbage and other obstructions are removed by the garbage and other obstruction removal means 4 provided on the way, and the liquid is sucked into the suction side 24 of the ejector 3 through the drain suction line 19, and the liquid is sucked into the drain line 20 of the ejector 3.
drained from the water. At this time, it is also effective to open the sprinkler system water supply valve 7 slightly and blow a small amount of water into the sprinkler system water supply line 17, water sprinkling pipe, etc. to clean it.

In addition, in the case of a water spraying device in which the watering nozzle is installed facing downward (generally, in the case of a watering device for the purpose of defoaming, filter cloth cleaning, etc., the watering nozzle is installed downward), the fourth As shown in the figure, rotatable pipe joints 36 such as union pipe joints can be provided at both ends of the sprinkler pipe 12, for example. When this rotatable pipe joint 36 is provided, during ejector suction, the water sprinkling pipe 12 is reversed by the rotation levers 37 provided at both ends of the water sprinkling pipe 12, and the water sprinkling nozzle 11 is rotated upward. The water nozzle 11 can be sucked downward in the direction of gravity to block objects such as grains.
Obstructions such as dust accumulated in the water nozzle 11 can be removed more effectively.

Furthermore, in the case of a sprinkler device in which the sprinkler nozzle is installed downward, in addition to providing the above-mentioned rotatable pipe joint 36 shown in FIG. 4, as shown in FIG. A gutter 38 can be provided which is movably arranged relative to the trough. This gutter 38 can be installed along the lower part of the water sprinkling nozzle 11 formed on the water sprinkling pipe 12, as shown by the solid line in FIG. Move the gutter 38 so that it is immersed in the water, and open the water nozzle 11.
By causing water to flow back through the water spray nozzle 11
It is also possible to remove blockages such as dirt that have accumulated in the area.

Normally, when the water sprinkling device operates, the gutter 38 is moved away from the water nozzle 11 as shown by the dotted line in FIG. Similarly to the above, this water spray nozzle blockage prevention device can very effectively remove blockages such as dust.

After the cleaning of the sprinkler nozzle 11 is completed in this way, the sprinkler nozzle water supply valve 7 is opened, and the ejector nozzle water supply valve 6 leading to the ejector 3 and the sprinkler drain valve 5 are closed. Spraying water from the nozzle 11 is started.

When cleaning the water spray nozzle 11 using the water spray nozzle blockage prevention device 1 according to the present invention, the time required for cleaning is extremely short, usually less than 1 minute, and at most 3 minutes. There is no effect even if the cleaning time per cleaning is made longer than this, and it is more effective to increase the number of rotations intermittently.

In FIG. 3, another embodiment of the water nozzle blockage prevention device according to the present invention is shown. This water spray nozzle blockage prevention device has the same configuration as the water spray nozzle blockage prevention device 1 shown in FIG. 1, except that it includes a large number of water sprinklers 2 in which a large number of water pipes 12 are arranged. Therefore, the same parts are given the same reference numerals and the description thereof will be omitted. It goes without saying that the water spray nozzle blockage prevention device shown in FIG. 4 or 5 can also be applied, and will not be particularly described here.

In this way, a large number of water sprinklers 2, that is, water sprinkler pipes 1
If there is a water spray nozzle 11 provided in 2,
Rather than cleaning a large number of water pipes 12 at the same time,
It is preferable to operate so as to clean only the water sprinkler device 2 in which the blockage has occurred. That is, first, the ejector nozzle water supply valve 6 is opened, the sprinkler device drain valve 5 of the sprinkler device 2 to be cleaned is opened, the sprinkler device water supply valve 7 is closed, and as the case may be opened, the other sprinkler devices 2 are cleaned. The sprinkler drain valve 5 and the sprinkler water supply valve 7 are closed, and the condition is set such that only the sprinkler pipe 12 in which the sprinkler nozzle 11 is blocked is cleaned.

The water nozzle blockage prevention device according to the present invention has the following features:
A water spray nozzle 14 as shown in FIGS. 6 and 7,
15 can also be implemented, but it is particularly effective in a water sprinkling device in which the water sprinkling nozzle 16, water sprinkling pipe 12, and other piping materials are integrally molded as shown in FIG. In the case of the embodiment shown in FIG. 8, when cleaning the water nozzle 16,
It is particularly effective to slightly open the water supply valve 7 of the sprinkler system and blow a small amount of water into the sprinkler pipe 12 and the like.

〔Effect of the invention〕

The method and device for preventing clogging of a water spray nozzle according to the present invention are configured as described above, and have the following effects. That is, in the past, cleaning the water spray nozzle to prevent the water spray nozzle from clogging was a manual process, which was extremely troublesome, but according to the present invention, the cleaning work can be done in a short time because it is only necessary to switch the water supply valve. It can be completed within a short period of time, saving labor.

In addition, a detector for detecting blockage of the water spray nozzle, for example, a detector for optically detecting changes in water spray pressure, flow rate, etc., or the quality of the cleaning state, and a signal from this detector are used. By installing an on-off valve that automatically opens and closes, it becomes possible to automatically remove blockages caused by obstructions such as dust in the water nozzle.

For example, if the method and device for preventing clogging of water spray nozzles according to the present invention are applied to a filter cloth cleaning device of a dehydrator for treating sludge generated from the treatment process of sewage, human waste, industrial wastewater, etc., Significant labor savings can be achieved, such as by enabling unmanned operation.

Further, according to the present invention, it is possible to prevent the water nozzle from being blocked by obstructions such as garbage without using a special nozzle such as a self-cleaning nozzle, and the device itself for removing obstructions such as garbage is inexpensive. Therefore, it is possible to provide an economically inexpensive water sprinkling device that requires less water sprinkling amount and water sprinkling pressure to remove blockages.

Further, in the water sprinkling device in which the water sprinkling nozzle is installed facing downward, a means for reversing the water sprinkling nozzle upward when the ejector is suctioning is provided, or a means for sucking nozzle cleaning water from the water sprinkling nozzle when the ejector is suctioning. By disposing the gutter in a movable manner, obstructions such as dirt can be removed even more effectively.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the water spray nozzle blockage prevention device according to the present invention, FIG. 2 is a sectional view of an ejector used in the water spray nozzle blockage prevention device of FIG. 1, and FIG. FIG. 4 is a perspective view showing another embodiment of the water spray nozzle blockage prevention device according to the present invention, FIG. 4 is a schematic diagram showing still another embodiment of the water spray nozzle blockage prevention device according to the present invention, and FIG. Schematic diagrams showing still other embodiments of the water spray nozzle blockage prevention device, FIGS. 6, 7, and 8 are examples of general water spray nozzles used in the water spray nozzle blockage prevention device according to the present invention. FIG. 9A and FIG. 9B are cross-sectional views showing an example of a conventional self-cleaning nozzle. DESCRIPTION OF SYMBOLS 1... Water nozzle blockage prevention device, 2... Water sprinkling device, 3... Ejector, 4... Means for removing debris, etc., 5... Water spray device drain valve, 6... Ejector nozzle water supply valve, 7... Water spraying Device water supply valve, 8...Water pressure pump, 9...Strainer, 10...Water tank, 11...Water nozzle, 12...Water pipe, 13...Pressure water supply line, 14, 15, 1
6...Water nozzle, 17...Sprinkler water supply line, 18...Ejector water supply line, 19...Drain suction line, 20...Drainage line, 21...Throat, 23...Injection nozzle, 36...Free rotation pipe joint, 37... rotating lever, 38... gutter.

Claims (1)

[Scope of Claims] 1. In a method for preventing clogging of a water sprinkling device equipped with a large number of water sprinkling nozzles due to obstructions such as garbage, the method includes supplying water to the water sprinkling device using a pressure water supply line that supplies pressure water. The sprinkler water supply line is branched into an ejector water supply line that supplies pressurized water to the driving side of the ejector, the supply of pressure water to the sprinkler is temporarily stopped, and the pressure water is sent only to the ejector water supply line, and the A method for preventing blockage of a water sprinkling nozzle, comprising driving an ejector and using the suction force of the ejector to suction and remove blockages such as dust present in the water sprinkling device. 2. According to claim 1, a removal means for removing obstructions such as dust is provided on the suction side of the ejector to prevent obstructions such as dust from being sucked into the ejector. How to prevent water nozzles from clogging. 3. A water sprinkling system equipped with a pressure water supply line to which pressure water is supplied, a sprinkler water supply line and an ejector water supply line branched from the pressure water supply line, and a large number of water spray nozzles to which pressure water is supplied through the sprinkler water supply line. and an ejector for supplying pressurized water to the drive side through the ejector water supply line, and configured to be able to switch between supplying pressurized water to the sprinkler water supply line and the ejector water supply line, and the water sprinkler A water spray nozzle blockage prevention device characterized in that a drain suction line is communicated with a suction side of the ejector. 4. The water spray nozzle blockage prevention device according to claim 3, wherein the drain suction line is provided with a removing means for removing blockages such as dust. 5. The sprinkler nozzle blockage prevention device according to claim 3, wherein the sprinkler water supply line is provided with a sprinkler water supply valve, and the ejector water supply line is provided with an ejector water supply valve. 6. The water sprinkling nozzle blockage prevention device according to claim 3, characterized in that the drain suction line is provided with a water sprinkling device drain valve. 7. Claims characterized in that the water sprinkling device has means for reversing the water sprinkling nozzle either downward or upward, and that the means reverses the water sprinkling nozzle upward when the ejector is suctioning. The water spray nozzle blockage prevention device according to item 3. 8. A patent claim characterized in that the water sprinkling device is provided with a movable gutter for nozzle cleaning water relative to the water spray nozzle in order to suck the nozzle cleaning water through the water spray nozzle when the ejector is suctioned. The water spray nozzle blockage prevention device according to item 3.