JP2001276521A - Apparatus for blowing air to filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for blowing air to a filter with which the replacement work of filters is made easy, the pollution in the surrounding the secondary side facilities is suppressed, and the product lives of these facilities can be prolonged. SOLUTION: The apparatus for blowing air is assembled in a water channel through which wastewater pumped up by a pump is passed to a filter between the pump and the filter so as to blow an air through a check valve from an air compressor to push out the wastewater clogging the filter and is provided with a safety valve for releasing the excess pneumatic pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for blowing air into a filter, and more particularly to a device for easily replacing the filter when replacing the filter and preventing contamination of equipment provided around the filter and on the secondary side of the filter. The present invention relates to an air blowing device for performing air blowing.

[0002]

BACKGROUND OF THE INVENTION Conventionally, the circulation of water used for industrial machines, for example, a discharge type wire cutter-1 is as follows.
The water is sent from the water tank 2 for the discharge type wire cutter 1 to the sewage tank 4 by the pipe 3. This sewage tank 4
Is equipped with a pump 5, and the sewage pumped up by the pump 5 is sent to a filter 7.7 through a cooler 6 for cooling the sewage heated by the discharge.

Although the filters 7.7 are of a downward type as shown in the figure, they may be of an upward type or a horizontal type shown by imaginary lines. The filters 7.7 are installed in a water tank 8 so as to store filtered water.

[0004] From the water tank 8, the filtered water is sent to a sub-tank 11 through a preliminary filter 10 through a container 9 for ion exchange resin, and the filtered water in the sub-tank 11 is pumped up by a pump (not shown). It is circulated to the discharge type wire cutter-1 and reused.

[0005]

However, in this conventional water filtering apparatus, a water pressure of about 2 to 2.5 kg is applied to the filter 7.7, and naturally, the filter 7.7 7 is filled with water, so that the filter 7 is replaced when the filter 7 is replaced.
If the 7 is removed from the water channel, the sewage will spill into the water tank 8 and contaminate the filtered water, which will also contaminate the subsequent ion exchange resin and the spare filter 10 and the product life. And the water supplied to the discharge type wire cutter-1 also becomes polluted. In addition, the filters 7.7 in a state full of contamination are heavy and difficult to work.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides the above-mentioned conventional situation
Focusing on the problem, it is easy to replace the filter, there is no contamination of the surroundings and secondary equipment, and the air to the filter can prolong the product life of those equipment. The purpose of the present invention is to provide a blowing device.

[0007]

In order to achieve this object, an apparatus for blowing air into a filter according to the present invention comprises a pump for pumping up sewage and supplying water through a water passage to the filter, and the filter. It is assembled to the water passage, blows air from an air compressor through a check valve, and pushes out the filled sewage of the filter, and is provided with a safety valve for releasing excess air pressure. And

[0008]

With this configuration, when the filter is replaced, the waste water is drained from the filter, so that the surroundings and the secondary facilities are not contaminated, the weight is light and the work can be easily performed. As a result, the product life of the secondary equipment of the filter can be prolonged.

[0009]

Next, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing equipment for implementing the present invention, FIG. 2 is a mechanism diagram showing a device for blowing air, and FIG. 3 is an exploded view showing the connection of parts.

In these figures, reference numeral 12 denotes a device for blowing air. The device 12 for blowing air is provided on the secondary side of the pump 5 and on the primary side of the filter 7.7, that is, the pump 5 and the filter -7.・ It will be interposed between 7.
Although it is located on the secondary side of the cooler 6 in the figure, it is not limited to this, and it may be located on the primary side of the cooler 6.

The air blowing device 12 has a valve box (pipe line) 13 assembled to the water passage, and a check valve comprising a swing valve 14 is provided on the pump 5 side (primary side) of the valve box 13. A valve is provided. 14a is a swing valve body 1
4 is a stopper.

A diameter-reducing nipple 15 is screwed into an opening on the upper surface of the valve box 13.
Is provided with a check valve consisting of a sliding disk valve element 17 urged by a coil spring 16. Reference numeral 17a denotes an annular stopper of the sliding disk valve element 17, reference numeral 17b denotes packing, and reference numeral 17c denotes a check box.

[0013] Both nipples 18 are screwed into the upper opening of the valve box 17c, and a cross pipe 19 is mounted on the upper portions of both nipples 18. A pressure gauge 21 is provided at an upper opening of the cross pipe 19 via a hexagonal bush 20.

An air coupler 22 is connected to one opening of the cross pipe 19 via a valve 23. An air compressor (not shown) is connected to the air coupler 22.
Compressed air is sent from the valve, and the compressed air is controlled by opening and closing the valve 23 by the manual lever 24.

Further, an elbow pipe 26 is connected to the other opening of the cross pipe 19 via both nipples 25, and a safety valve device 28 is connected to the other end of the elbow pipe 26 via both nipples 27. The safety valve device 28 is a needle that presses and biases an air flow port 29 by a coil spring 30.
When the dollar 31 is normally closed and the internal pressure becomes higher than a set value, the internal pressure pushes the needle 31 against the urging force of the coil spring 30 to release excess air to the outside. It is installed just in case. Reference numeral 32 denotes a discharge port for surplus air.

The valve box 13 is assembled to the water passage by hose nipples 33 and 34, and reference numeral 35 denotes a mounting bracket for supporting the device 12 for blowing air.

The device for blowing air into the filter according to the present embodiment is configured as described above. Although the discharge type wire cutter -1 has been described as an example, the present invention is not limited to this, and can be applied to other industrial machines, industrial water, and the like. Of course, it can also be used for facilities that dispose.

[0018]

The apparatus for blowing air into the filter according to the present invention is constructed and operates as described above. for that reason,
At the time of replacement, the surroundings of the filter, especially the filtered water in the water tank, will not be contaminated, and there is no cause for contaminating the secondary equipment of the filter. Also, when replacing the filter
Since the water is drained from the, it is lighter and easier to work.

[Brief description of the drawings]

FIG. 1 is a block diagram showing equipment implementing the present invention.

FIG. 2 is a mechanism diagram showing a device for blowing air.

FIG. 3 is an exploded view showing connection of parts.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire cutter 2 Water tank 3 Pipe 4 Sewage tank 5 Pump 6 Cooler 7 Filter 8 Water tank 9 Container 10 Preliminary filter 11 Subtank 12 Air blow device 13 Valve box 14 Swing valve body 15 Nipple of reduced diameter 16 Coil spring 17 Sliding disc valve element 17c Valve box 18 Double nipple 19 Cross pipe 20 Hex bush 21 Pressure gauge 22 Air coupler 23 Valve 24 Manual lever 25 Double nipple 26 Elbow pipe 27 Double nipple 28 Safety valve device 29 Flow port 30 Coil spring 31 Needle 32 Discharge port 33 Hosnipple 34 Hosnipple 35 Mounting bracket

Claims (2)

[Claims] 1. A filter, which is assembled to the water passage between a pump for pumping up sewage and supplying water to the filter through the water passage and the filter, and blows air from an air compressor through a check valve to fill the filter. A device for blowing air into a filter, characterized by pushing out sewage. 2. A device for blowing air into a filter according to claim 1, further comprising a safety valve for releasing surplus air pressure.