JPS607765Y2 - Automatic filter cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic cleaning device for a filter for liquids containing contaminants such as oil, and particularly to improvements in sludge receivers.

In the conventional automatic cleaning device, as shown in FIG. 4, a hollow cylindrical sludge receiver 10 is installed inside a rotating cylindrical filter device 4 facing each other, and pressurized oil is supplied to the receiver through a vertical slit 10e provided on an outer wall 10b. It squirts inside,
It is discharged from the lower blow pipe 11.

Therefore, the oil in the filter has its own pressure (approximately 4-5k
o/c? Blow pipe 11 connected to atmospheric pressure by
When flowing into the sludge receiver 10, the sludge is injected together with the sludge.

However, at this time, the lower part of the sludge receiver 10 close to the blow pipe 11 is filled with injected oil, so the amount of injected oil in the upper part away from the blow pipe 11 is very small, which causes the sludge in the upper part to The problem was that the filtration efficiency was low because the filtrate was not removed sufficiently and remained in a dirty state.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to provide an automatic filter cleaning device that can uniformly clean the entire area of a sludge receiver and improve the overall cleaning efficiency.

Therefore, the gist of the present invention is that a cylindrical filter device is rotatably provided inside a cylindrical body, and a cylindrical sludge receiver is placed on one end wall of the body at a slight interval on the circumferential surface of the filter device. In the filter, a slit is provided along the length in a wall opposite to the circumferential surface of the filter device of the sludge receiver, and a blow pipe is connected to one end in the length direction of the sludge receiver. In the receiver, the slit is divided into two or more parts in the length direction by one or more partition walls, and correspondingly, the cross-sectional area is divided into two or more parts toward the connection part of the blow pipe.

An embodiment of the present invention will be described below based on the drawings.

As shown in FIGS. 1 to 3, the filter has a cylindrical filter device 4 rotatably installed inside a vertically cylindrical main body 1, and the filter device 4 is provided with a perforated plate cylinder 2a, which is stretched around the outer periphery of the filter device 4. It consists of a filter wire mesh 3 and a reinforcing plate 2b around its outer periphery.

The filter device 4 is driven by an electric motor (not shown) through a multi-row gear mechanism 5, and is attached to an upper end plate 6.

An oil supply pipe 8 is opened inside the filter device 4 through the other lower end plate 7 of the main body, and an oil discharge pipe 9 is attached to the upper part of one side of the main body 1 (on the left side in FIG. 1).

The sludge lever 10 is attached to the other side (right side in FIG. 1) inside the filter device 4 and communicates with a blow pipe 11 passing through the other lower end plate 7.

Thus, the sludge receiver 10 of the present invention is installed upright on the mounting base 10a, with an outer wall 10b curved along the inner surface of the filter device 4, an inner wall 10c facing the center of the main body, and facing the mounting base 10a. The other end has a hollow cylindrical shape formed by an upper wall 10d.

A longitudinal slit lee is provided at the center of the outer wall 10b, and the receiver 10 has a partition wall 10f that divides the vertical slit 10e into two in the length direction. The cross-sectional area of the hollow part toward the opening of the flow pipe 11 is divided into two parts 10g and 10g.
Divide into h.

The receiver 10 is bolted to the other lower end plate 7 through a bolt hole 10i.

Reference numeral 10j is a reinforcing rib for the hollow cylinder.

Next, we will discuss the operating conditions.

The polluted oil is pressurized, filtered and cleaned from the supply port 8 by the filter device 4, and sent to the discharge port 9.

Now, for cleaning work, when the discharge valve (not shown) of the discharge pipe (not shown) connected to the blow pipe 11 is opened to communicate with the atmosphere, the filter device 4 with sludge attached is supported by the lower end plate 7. and the guide ring 13
The vertical slit 10e rotates while being guided by the vertical slit 10e.
At this position, a jet of pressure oil passes from the outside to the inside, and as a result, the sludge adhering to the inner surface is washed away and discharged along with the flow to the blow pipe 11, where the cleaning action is performed.

At this time, the hollow parts 10g and 1 in the sludge receiver 10
At 0h, a jet of oil enters at approximately the same flow rate, cleaning the entire length of the vertical slit.

The sludge receiver 10 of the present invention can be used with other liquids besides oil.

Further, the mounting positions of the oil supply pipe 8 and the discharge pipe 9 may be upside down compared to the above embodiment, and in this case, the perforated plate 2a
are located on the outer periphery of the filter wire mesh 3, the reinforcing plate 2b is located on the inner periphery, the sludge receiver 10 is attached to the outside of the filter device 4, and the structure is such that a high-speed jet flow passes from the inner surface to the outer surface of the filter device 4.

In addition to the embodiments described above, the vertical slit 10e and the hollow portion of the sludge receiver 10 may be partitioned into three or more sections by two or more partition walls.

As described above, in the present invention, by dividing the slit through which the fluid jet of the sludge receiver passes and the hollow space following the slit into multiple parts with partition walls, the jet can pass approximately uniformly. A substantially uniform leaning action was obtained along the line, and as a result, the strainer was not clogged and the filtration efficiency was further improved.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the main part showing an embodiment of the present invention, Fig. 2 is a plan view of the main part, Fig. 3 is a right side view of the main part, and Fig. 4 is a partially cutaway perspective view of the sludge receiver. be. 1...Main body, 2a...Porous plate inner cylinder, 2
b...Reinforcement plate, 3...Filter wire mesh,
4...Filter device, 5...-Sumo wrestler end plate, 7...Other lower end plate, 8...Oil supply pipe, 9...・Oil discharge pipe, 10...Sludge receiver, 10e...Vertical slit, 11...
...Blowpipe.

Claims (1)

[Scope of utility model registration request] A cylindrical filter device is rotatably provided inside the cylindrical body, and a cylindrical sludge receiver is installed along the circumferential surface of the filter device from one end wall of the body at a slight interval,
In the filter, a slit is provided along the length of the wall of the sludge receiver opposite to the circumferential surface of the filter device, and a blow pipe is connected to one end of the sludge receiver in the length direction. The filter is characterized in that the slit is divided into two or more parts in the length direction by a partition wall, and correspondingly, the cross-sectional area is divided into two or more parts towards the connection part of the blow pipe. Automatic cleaning device.