JPS583611A - Filter - Google Patents

Abstract

PURPOSE:To enable to automatically wash a filter element as required without opening a filter casing and enable to easily accomplish perfect automation, by a method wherein a perforated pipe capable of freely performing selective ejection of compressed air and a washing medium is placed in a filter element. CONSTITUTION:An outlet valve 24, an air vent valve 28, a drain valve 25 and an on-off valve are closed, a change-over valve 22 is operated, and compressed air is supplied into the interior of the filter casing 1 through an inflow port 2 and the perforate pipe 11 to evacuate the interior of the casing 1. When an inlet valve 25 and the change-over valve 22 are closed and the drain valve 25 is opened, a liquid with a sludge mixed therein is discharged through a drain discharge port 3. In this condition, when the change-over valve 22 is operated and the washing medium at a high pressure is supplied, the medium is ejected through ejecting holes 19 of the perforated pipe 11 to wash the filter element 10, and the washings is discharged sequentially through the drain discharge port 3. After washing, the change-over valve 22 is operated, the drain valve 25 is closed, the air vent valve 28 is opened while simultaneously the inlet valve 23 is opened, and a liquid to be filtrated is introduced into the interior of the filter casing 1.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a filtration device for filtering lubricating oil, fuel oil, etc. for, for example, internal combustion engines, blowers, and other equipment.

For example, in the case of fuel oil, etc., if the oil is of relatively poor quality, the incidence of problems such as entrainment and non-problems due to sludge tends to increase.

Furthermore, lubricating oils, especially those used in medium-speed marine engines, generate a large amount of sludge.

Therefore, we use large, high-performance filtration equipment for both fuel oil and lubricating oil to filter out impurities in the oil.
This filtration device generally has a complicated structure, and although the filtration element is automatically backwashed to prevent clogging, it is difficult to prevent clogging from progressing due to sludge.

Based on the above-mentioned viewpoint, the present invention provides a filtering device in which the filtering element is cleaned with a cleaning liquid as necessary, and there is no fear of clogging. It is divided into a filtration chamber, a lower chamber, and an upper chamber by a partition plate.
The royal chamber has an inlet for unfiltered liquid and a drain outlet, and the upper chamber has an outlet for filtered liquid and an air vent. and connects to the hole in the bulkhead between the royal chambers, and furthermore,
Inside the filtration element, there is a perforated pipe that can freely switch between spraying compressed air and cleaning medium.

It is characterized by the ability to freely remove liquid from the body and to clean the filtration element by spraying a cleaning liquid from the porous tube after the liquid has been removed.

Next, the apparatus of the present invention will be explained by way of embodiments with reference to the drawings.

FIG. 1 is a longitudinal sectional front view of an embodiment of the apparatus of the present invention, FIG. 2 is a horizontal sectional view taken along the line ■-■ in FIG. 1, and FIG. It is shown in a horizontal sectional view taken along the line -l.

As shown in the drawing, the filter casing l has a lower chamber A inside.
, a filtration chamber B, and an upper chamber C. The lower chamber A has an inlet 2 for unfiltered liquid and a drain outlet 3, and the upper chamber CK has an outlet 4 for filtered liquid and an air vent. 5 each.

The lower chamber A and the filtration chamber B are formed by a plurality of holes 7A and 7 of the perforated partition plate 6.
The upper chamber B and the upper chamber C communicate with each other through the partition plate 8.
The four holes 9 are communicated through four p-pass elements 10, each of which is closed at its open end.

Note that 1. The number of holes 9 and the number of filter holes 10 is selected as appropriate depending on the amount of oil.

Inside the filtration filter 10, a perforated tube is arranged to freely switch between spraying compressed air and cleaning medium.

The multi-percentage tubes 11 in the four filtration membranes 10 are connected at their upper ends to the main tubes 13 through rotary joints 12, while their lower ends are connected to the filtration elements, as shown in the enlarged longitudinal cross-sectional view in FIG. via the bearing 15 on the bottom plate 14 of lO,
It supports it so that it can spin freely.

In addition, each filtration element 10 has the lower surface of the bottom plate 14 pressed against the compression coil spring 17 inside the spring receiver 16 provided on the partition plate 6, and the cap 18 at the upper end is fixed to the partition plate 8. Note that the filter element IO may be supported only by the rotary joint 12, and in this case, the support by the spring receiver 16 and the compression coil spring 17 on the bottom plate 14 described above is unnecessary.

The perforated tube 11 is rotatable about its axis by the bearing 15 and the rotary joint 12, and as shown in the enlarged horizontal sectional view in FIG.
A large number of injection holes 19 are provided horizontally to the right at an angle of 5 degrees. As shown in FIG. 6, a nozzle 3'2, the tip of which is close to the filtration filter l-1o, is attached to the injection hole 19.

The effect can be further enhanced.

The injection holes 19 in the axial direction of the porous tube are arranged in a spiral direction along the outer circumferential surface of the porous tube, and in this embodiment, the injection holes 19 are arranged horizontally in a spiral direction.
00 equiangular division positions, but both the number and arrangement of holes are free in terms of design.

Furthermore, the inside of the filtration chamber 10 is vertically divided into four equal parts by vertical partition walls 20 intersecting each other in a cross shape, and each divided chamber has one filter.
There are grooves so that each filter element 10 is positioned.

On the other hand, the main pipe 13 is connected to a fluid supply pipe 21 which can freely selectively feed compressed air and cleaning medium, and the fluid supply pipe 21 is provided with a switching valve 22.

In addition, a large mouth valve 23 is provided on the inlet 2 side, an outlet valve 24 is provided on the outlet 4, and a drain valve 25 is provided on the drain outlet 3. An on-off valve 27 is provided in the drain pipe 26 which is branched and bent further downward.

Further, the air vent port 5 is connected to the on-off valve 27 of the drain pipe 26.
It is connected to the downstream side via an air vent pipe 29 having an air vent valve 28.

Furthermore, there is a liquid level gauge 30.3 inside the royal room A and the air vent 5.
1 are provided, and these liquid level gauges are designed to detect the liquid level within the filter housing 1 and to extract a predetermined signal.

The filtration device of the present invention having the above-mentioned configuration includes the outlet valve 24.
Then, the air vent valve 28, drain valve 25, and on-off valve 27 are closed, and the switching valve 22 is operated, and the compressed air with a pressure sufficiently high as the inflow pressure from the inlet port 2 is passed through the perforated pipe 11 to the filter casing. When the liquid is supplied into the body 1, the liquid in the filter case 1 is gradually compressed, and eventually almost the entire amount is pushed back through the inlet 2, and the inside of the filter case 1 becomes almost empty.

When the inlet valve 23 and the switching valve 22 are closed, and then the P-lens valve 25 is opened, the liquid containing a small amount of sludge remaining is discharged from the drain outlet 3, and the inside of the filter casing l is completely emptied. become.

When the switching valve 22 is operated in this state and a high-pressure cleaning medium is supplied, the cleaning medium is violently jetted out from the injection holes 9 of the porous pipe 11 all at once.

At this time, if the direction of the injection hole 19 is made to approach the tangent line of the porous pipe 11 and is biased in the same direction, the perforated pipe 11 will be damaged by the injection of the cleaning medium, as shown by the arrow in FIG. 5, for example. The cleaning medium is jet-propelled and rotated in the direction, and the jetted cleaning medium is vigorously sprayed over the entire inner surface of the porous tube 11, thereby cleaning the filtered elm 10.

The liquid used for cleaning is sequentially discharged from the drain outlet 3.

After washing for a predetermined period of time, operate the switching valve 22 to stop the supply of the washing medium, close the drain valve 25, open the air vent valve 28, and at the same time open the large mouth valve 23. It sequentially enters the filtration chamber B, is eventually filtered by the filtration element IO, and enters the upper chamber C through the hole 9.

The level of the filtered liquid that has entered the upper chamber C gradually rises, and eventually enters the open air vent 5, and the level gauge 31 begins to issue a level rise signal.

When the air vent valve 28 is closed, the filter enters a standby state, and when the outlet valve 24 is opened, the filtered liquid is sequentially delivered.

Note that, prior to opening the outlet valve 24, the on-off valve 27 and the air bleed valve 28 are operated to completely bleed out the remaining air from inside the filter casing l.

If the above-mentioned operation is controlled in sequence in the electric air system and a plurality of filters of the present invention are alternately used, a fully automated filtration and cleaning system can be obtained.

FIG. 7 is a block diagram showing the operation when fully automated.

In this case, the timing for starting cleaning and switching the filter used prior to this may be when it is detected that the pressure in the lower chamber A has increased above the set pressure, or may be based on a preset cycle. Further, switching between one operation and the other can be done by taking out a signal using the liquid level gauges 30 and 31, and each operation time can be set to a predetermined time using a timer. Of course, all valves shall be valves that open and close automatically.

As is clear from the above explanation, the filter of this invention can automatically clean the slazo etc. adhering to the filter element as needed without opening the filter housing each time, and can be easily cleaned using extremely simple sequence control. It is easy to fully automate and helps save labor.

Since the amount of drain initially removed is small, it is possible to minimize the loss of oil, for example in the case of lubricating oil.In contrast to conventional equipment, where cleaning was performed with lubricating oil, there was a large loss of lubricating oil. With the device, this does not occur, and oil loss during cutting is prevented.Furthermore, by allowing the perforated tube to freely rotate through jet propulsion, an external drive device for the filtration element, which was previously required, is no longer required. This has excellent effects such as making it unnecessary.

[Brief explanation of the drawing]

Fig. 1 is a system diagram showing an embodiment of the filtration device of the present invention, Fig. 2 is a cross-sectional view taken along the line ■-■ of Fig. 1, Fig. 3 is a cross-sectional view taken along the line -■, and Fig. 4 is a filter element. 5 is an enlarged horizontal sectional view of the perforated tube, FIG. 6 is an enlarged vertical sectional view of the lower part of the filtration element showing another example of the perforated tube, and FIG. FIG. 2 is a block diagram of the operational sequence to be described. In the drawings, l...filter housing, 2...inlet, 3...drain outlet, 4...outlet, 5...air vent, 6,8...
・Partition plate, 7A, 7B, 9...hole, lO...filtration element, 11...porous pipe, 12...rotary joint, 13...
・Main pipe, 14...Bottom plate, 15...Bearing, 16...
- Spring bearing, 17... Compression coil spring, 18... Mouthpiece, 19... Injection hole, 20... Partition wall, 21... Fluid supply pipe, 22... Switching valve, 23... Inlet valve, 24... Outlet valve, 25... Drain valve, 26... r drain pipe, 27...
...Opening/closing valve, 28...Air vent valve, 29...Air vent pipe, 30.31...Liquid level gauge, 32...Nozzle, A...
Lower chamber, B...filtration chamber, C...upper chamber. %1Figure 25-'□ Diagram 2

Claims (1)

[Claims] (II. The inside of the filter housing is divided into a filtration chamber, a royal room, and a royal room by a partition plate with holes at predetermined positions, and the royal room is provided with an inlet for unfiltered liquid and a drain outlet. , In addition, while the royal room is provided with an outlet for the filtered liquid and an air vent,
The opening at the top of the filtration element provided in the filtration chamber is connected to the hole in the partition plate between the filtration chamber and the upper chamber, and the interior of the filtration element is designed to freely switch between spraying compressed air and cleaning medium. By arranging a perforated pipe, it is possible to remove the liquid inside the filter casing by blowing compressed air through the perforated pipe, and to clean the filtration filter by spraying a cleaning medium from the perforated pipe after removing the liquid. A filtration device featuring: (2) The perforated pipe is supported concentrically within the filtration element so that it can freely rotate, and the injection holes provided in the perforated pipe can be freely rotated for jet propulsion by jetting compressed air or cleaning medium. The filtration device according to claim 1, characterized in that the filtration device is oriented in the following direction. (3) The perforated tube is concentric within the filter element, and. The multi-hole tube is supported so that it can freely rotate, and the injection holes provided in the porous tube can be freely rotated for jet propulsion by jetting compressed air or cleaning medium, and a nozzle is attached to each of the injection holes. A filtration device according to claim 1.