JPS5813935Y2 - Pre-filter device in contaminated air treatment equipment for waterfall tank - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an aeration tank for purifying sewage and human waste treatment plants, and particularly to a pre-filter device in contaminated air treatment equipment for closed aeration tanks.

Conventionally, in a closed aeration tank equipped with a cover, the contaminated gas generated in the tank is suctioned and conducted from the upper opening through a duct to processing equipment equipped with an activated carbon adsorption filter, etc., and the contaminated air is removed without leaking to the outside. We are working to conserve the surrounding environment by disposing of the waste.

However, when the aeration tank is turned on, polluted gas containing a large amount of moisture, dirt, and dust such as scum is generated, which causes severe clogging of the polluted gas adsorption filters in the processing equipment. There was a problem in that the ventilation capacity was severely reduced due to the increase in pressure loss, causing odor and other problems and defeating the purpose of environmental conservation.

Therefore, recently, even in the contaminated air treatment equipment of the aeration tank mentioned above, a pre-filter is installed to collect and remove the dust and moisture contained in large amounts in the contaminated gas, and the subsequent contaminated gas adsorption filter is installed. However, installing a pre-filter in the air treatment equipment of the aeration tank has problems with the corrosion and water resistance of the filter medium and The current situation is that there are many difficult problems such as removing collected dust, and from a practical standpoint, it is not very effective.

This idea was devised in view of the above circumstances, and its purpose was to not only collect a large amount of dust and moisture in the contaminated gas sucked and passed from the aeration tank to the contaminated air treatment equipment in the first stage, but also to provide corrosion-resistant・It is water resistant and does not require advanced maintenance/inspection equipment such as automatic cleaning equipment, and does not require workers to get their hands dirty with a cleaning hose or leak contaminated gas to the outside. The collected accumulated dust can be washed and removed very easily, and the polluted water can be directly poured into the aeration tank directly below without a wastewater system, making it easy to regenerate and maintain with very simple equipment. Our goal is to provide something that is extremely effective in practical use and can always exhibit stable performance.

An embodiment of the prefilter device of this invention will be described below with reference to the drawings.

In the figure, 1 is the main body of the equipment box made of stainless steel or synthetic resin, which has a vertical hollow rectangular tube shape with an open bottom end.
It is erected and fixed directly above the opening formed in the beating upper cover a.

The main body 1 has a suction duct connection port 3 at its upper end so that it can be communicated via a duct with contaminated air processing equipment equipped with a suction blower, a contaminated gas adsorption filter, etc. (not shown).

On one side wall of the main body 1, inspection openings 4 are arranged in two stages, upper and lower.
, 4 and lids 5, 5 for airtightly closing them during normal times, and filters 6.6 are installed in the main body 1 in two stages, upper and lower, by inserting them through the inspection holes 4, 4, respectively. ing.

This filter 6.6 has excellent corrosion resistance and water resistance, and is easily recyclable by washing with water.The filter 6.6 has a V-shaped cross section and a curved shape toward the center.

Furthermore, viewing windows 8, 8 with wipers γ which can be operated by external handles are provided at two upper and lower locations on the front and rear walls of the main body 1, respectively, and the glasses of the viewing windows 8, 8 can be cleaned by operating the wipers γ, respectively. At the same time, it is possible to check the state of collected dust accumulation on the internal filter 6.6 and the state of cleaning and regeneration, which will be described later.

On the other hand, on the outer surface of the other side wall opposite to the inspection holes 4, 4 of the main body 1 described above, operation boxes 9, 9 are similarly arranged in two places, upper and lower.
is installed.

As shown in FIGS. 3 and 4, the interior of this operation box 9 is divided into two chambers 11 and 12 by an intermediate partition plate 10, and one of the chambers 11 has an opening/closing lid 13 and can be opened from the outside. A long sealed glove 14 made of rubber or the like and having corrosion-resistant and waterproof properties is housed inside.

The sealing glove 14 is airtightly attached by fitting the proximal end into a cylindrical opening 16 with an outer circumferential groove provided on the inner wall of the operation box 9 so as to communicate with a hole 15 formed on the side wall of the main body 1. For example, the worker can fit his right hand into the main body 1 and extend it into the main body 1 as shown by the imaginary line in FIG.

Further, in the other chamber 12 of the operation box 9, a long cleaning hose 18 having a spray nozzle 17 at its tip is housed.

The base end of this cleaning hose 18 is connected to a water supply pipe connecting fitting 19 fitted into the earthen wall of the operation box 9, so that in-house treated water and the like can be supplied from the outside by a pressure pump (not shown). There is.

An inner cover 21 having a hook 20 is attached to the inner wall of the chamber 12 containing the cleaning hose 18, and an opening 2 formed in the side wall of the main body 1.
2 to the inside of the main body 1 as shown by the imaginary line in FIG. By opening the lid 21, the cleaning hose 18 in the other chamber 12 can be pulled out to the inside of the main body 1, and the filter 6 can be cleaned.

As shown in FIG. 1, the mounting points of the upper and lower operation boxes 9, 9 are slightly higher than the filters 6.6 installed in the main body 1, so that the above-mentioned cleaning operation can be performed on each filter 6.6.
This can be done from above 6.

Therefore, in the pre-filter device of this invention, during the suction operation of the processing equipment, contaminated gas containing a large amount of dust and moisture is circulated from the aeration tank A into the main body 1 from the bottom to the top. A large amount of dust, moisture, etc. in the contaminated gas is filtered and collected by a filter 6.6, and the previously treated contaminated gas is suctioned and conducted to the processing equipment through the suction duct connection port 3 at the upper end (not shown). It is then processed using an adsorption filter or the like.

During the processing operation for a suitable period of time, if the collected dust accumulates on the filter 6.6 in the main body 1 and the pressure loss exceeds a predetermined value, the filter 6.6 is cleaned and regenerated.

This work is performed using the opening/closing lid 13 of one chamber 11 of the operation box 9.
Open the inner lid 21 of the other chamber 12 and insert the hand inside the sealed glove 14 and extend it inside the main body 1, then open the inner lid 21 of the other chamber 12 with the hand wearing the glove 14 and insert the cleaning bowl 18 into the main body 1. At this point, water is supplied from the outside, and the hose 18 is operated, and the tip injection nozzle 11 also sprays water onto the top of the filter 6, removing the collected dust that has accumulated on the filter 6. Wash off and regenerate.

At this time, the upper filter 6 is washed first, and then the lower filter 6 is washed, and the polluted water containing dust, etc. that has been washed away is directly dropped into the aeration tank A through the opening directly below it. .

Also, during the cleaning work, the viewing windows 8 at the front and rear of the main body 1 are closed using fiberglass.
While cleaning in step 7, look into the filter 6 inside the main body 1 through the window 8 and check the cleaning and regeneration condition.

However, once the cleaning and regeneration of filter 6.6 is completed,
Stop the water supply from outside and connect the cleaning hose 18 to the other chamber 12.
Then, close the inner lid 21 and apply the hook 20 to prevent it from opening accidentally. After that, pull out your hand and return the sealing glove 14 to one chamber 11, and then close the opening/closing lid 1.
Close 3 to complete the work.

In this way, by carrying out the above-mentioned filter cleaning operation and regenerating it at an appropriate time, stable performance as a pre-filter can be maintained, and a decrease in processing capacity due to clogging of subsequent processing equipment can be prevented.

When cleaning the filter, the worker operates the cleaning hose 18 while wearing sealed gloves 140 from the outside, so he does not get his hands dirty by touching the collected dust or polluted water. During cleaning work, one chamber 11 of the operation box 9 opens the opening/closing lid 13, but the inner opening 1
Since the sealed glove 14 is airtightly fitted to the main body 1
Contaminated gas inside the chamber does not leak outward, and the other chamber 1
2 as well, since there are no other parts to open by simply opening the inner cover 21, there is no chance of contaminated gas inside the main body 1 leaking to the outside.

Furthermore, after cleaning the filter, the cleaning hose 18 and the sealed gloves 14 are stored in the operation box 90 chambers 11 and 12, respectively, so that they are not exposed to the flow of contaminated gas suctioned through the main body 1 during processing operation. Inconveniences such as contamination do not occur, and of course, even during operation, no contaminated gas leaks from inside the main body 1 through the operation box 9 to the outside.

In addition, as mentioned above, the filter 6.6 installed in the main body 1 is a washable and recyclable type that can be washed with water, and has excellent corrosion and water resistance, so it can withstand long-term use and exhibit stable performance. Moreover, since it is formed with a V-shaped cross section and one angle, the filtration area becomes larger than that of a flat one simply placed horizontally, and the efficiency of collecting dust etc. is improved.

Furthermore, the filter 6,
Since the main body 1 is installed vertically just above the upper opening of the aeration tank A, the polluted water containing the collected dust washed away from the main body 1 is dropped into the steam tank A straight from within the main body 1. This eliminates the need for auxiliary equipment such as a wastewater system, making it possible to significantly reduce equipment costs, operating costs, etc.

In addition, each filter 6.6 has a cross section shaped like the letter ``■'' and becomes lower from the periphery toward the center, so that during cleaning operations, polluted water flows down from the center of the filter 6.6, and flows onto the side wall around the 10th periphery of the main body. The polluted water can smoothly fall into the aeration tank A through the center without coming into contact with it, that is, without staining the side walls around the main body.

However, this invention is not limited to the above-mentioned embodiment. For example, the filter 0 installed in the main body 1 may be arranged in one stage, or in three or more stages, and the filter 6 has a cross section of V. It is drunk even if it is not limited to the form of a letter.

This idea was developed as detailed above, and not only can a large amount of dust and moisture in the contaminated gas sucked and passed from the steam tank to the processing equipment be collected before and after, but the filter also has excellent corrosion and water resistance. It is a cleaning and regenerating type that does not require sophisticated equipment such as automatic cleaning equipment that requires troublesome maintenance and inspection. The filter can be easily washed and regenerated, and the polluted water containing the collected dust removed from the filter by washing can be poured straight into the aeration tank without a wastewater system, which is very convenient. Post-processing is simple, regeneration and maintenance are easy, and stable performance can always be demonstrated, which is extremely effective in practical terms.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a front view, Fig. 2 is a side view, Fig. 3 is a partially enlarged perspective view, and Fig. 4 is an enlarged partially sectional view of Pyeongchang. It is. A...Steam tank, b...Top opening, 1...Device box body, 6...Filter, 9...Operation box, 14
...Sealed gloves, 1γ...Spray nozzle 18...Cleaning hose.

Claims (1)

[Scope of utility model registration request] The main body of the equipment box is installed directly above the upper opening of the aeration tank, and a washable and recyclable filter with corrosion resistance and water resistance is installed in one or more stages within the main body, and water is supplied from the outside with sealed gloves. It has a built-in cleaning hose with a spray nozzle that allows the worker to insert their hand into the sealed glove from the outside and operate the cleaning hose, making it possible to clean the filter without leaking the contaminated gas inside the main body to the outside. 1. A pre-filter device that can be turned on to contaminated air treatment equipment for an aeration tank, characterized in that an operation box is provided on the main body.