JPS59216611A - Filter apparatus - Google Patents

Abstract

PURPOSE:To definitely prevent the clogging of a filter over a long period of time and to also certainly achieve the removal of fine particles, by revolving a liquid supplied into a casing under constant pressure along the outer periphery of a filter cylinder in such a state that a rotary cage is rotated at a high speed. CONSTITUTION:A rotary cage 6 is rotated at a high speed in such a state that a casing 1 is filled with oil. In this state, low quality heavy oil is successively supplied into the casing as a purifying liquid from an introducing pipe 22. Whereupon, the heavy component in the heavy oil is flowed downwardly to the inner bottom part of the casing 1 is drain. On the other hand, the light component therein is flowed into a rotary cage 6 and thereafter flowed into a filter cylinder 13 while impurities are removed and the usual particles in the light component are spattered on the basis of the high speed revolution of the light component or cut and, therefore, each passing perforation of a filter 14 is not clogged. In addition, the purified component flowed into the filter cylinder 13 is successively supplied to a ship's engine etc., through an outflow pipe 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a filtering device for purifying heavy oil by capturing and removing contaminants, for example.

[Technical background of the invention and its problems]

In recent years, the worsening oil situation has encouraged increased production of middle distillates, and for example, low-quality heavy oil used in marine engines has become increasingly inferior.
The contamination of aluminum silica used in the catalytic cracking method, or the increase in residual carbon content and asphaltene content found in aromatic hydrocarbons have become major problems. Conventionally, when such low-quality heavy oil is used in marine engines, impurities in the oil are pretreated by precipitation or centrifugation, and then passed through a filter to purify it. However, the pretreatment is not complete, and as a result, the filter becomes clogged early, leading to engine stoppages, etc. If the filter is made coarser, it becomes difficult to capture minute particles such as aluminum silica. This has caused problems such as abnormal wear of the flanger of the fuel pump and damage to the cylinder liner and piston ring.

[Purpose of the invention]

The present invention was made with attention to these points, and its purpose is to reliably prevent filter clogging over a long period of time, and also to accurately remove minute particles. The object of the present invention is to provide a filtration device that can achieve good purification.

[Outline of the invention]

The present invention includes a cylindrical casing, a rotating cage that is housed concentrically inside the casing and has a large number of small holes on the circumferential surface and a plurality of blades on the inner circumferential wall, and a rotating cage that is arranged inside the rotating cage. The rotating cage is rotated at high speed, and the rotating cage is rotated at high speed. In this system, liquid is supplied into the casing at a constant pressure, and the liquid is swirled around the outer periphery of the filter cylinder based on the rotation of the rotating cage.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a cylindrical casing whose lower end is formed into a cylindrical shape, and a cover 2 is provided at the upper end of the casing 1. As shown in FIG. A cylindrical interlocking body 4 is rotatably supported at the center of the cover 2 via a bearing 3, and this interlocking body 4 is adapted to rotate at high speed in conjunction with a drive shaft 5. A rotating cage 6 formed in a cylindrical shape is concentrically arranged in approximately the upper half of the casing 1.
is supported by the interlocking cylinder 4. rotating turf 60
There are many small holes 7 with a diameter of about 8 trrrh on the circumference.
A plurality of relatively large diameter communication holes 8 are bored in the periphery of the upper surface, and multi-pitched blades 9 are formed on the inner circumferential wall in the longitudinal direction. ... are installed evenly.

A flow pipe 10 is inserted vertically from the lower end of the casing 1, and an outflow pipe 11 is further inserted into the flow pipe 10. A support plate 12 is attached to the upper end of the outflow pipe 11, and a filter cylinder 13 is supported concentrically inside the rotating cage 6 via the support plate 12. This filter cylinder 13 is formed by holding both ends of a cylindrical fill 14 with holders 15 and 16 and integrating the filter cylinder 13. The filter 14 has a diameter of 1 on its circumferential surface.
It has countless fine through holes 17 of about 0 to 100 microns, and the periphery of each through hole 17 has a sharp thin blade shape, as shown in FIG. A collar 18 is formed at the upper end of the flow pipe 10, and the collar 18 is connected to the support plate 1 with a gap 19.
It faces the bottom surface of 2. An outlet pipe 20 is connected to the side surface of the lower end of the flow pipe 10, and a shutoff valve 2 is installed in the middle of the outlet pipe 20.
1 is provided. A gas pipe 22 is still connected to the side surface of the upper end of the casing 1, and a drain pipe 23 is further connected to the lower end of the casing 1.

Next, the effect will be explained. With the casing 1 filled with oil, the drive shaft 5 rotates in conjunction with a motor, etc., and the rotating cage 6 rotates at a high speed of 290 Or, p, m 8 degrees. In this state, low quality heavy oil is sequentially supplied into the casing 1 as a purifying liquid through the introduction pipe 22 at a constant pressure. The supplied heavy oil swirls along the inner circumferential surface of the casing 1 due to the high speed rotation of the rotating cage 6. As a result of this rotation, the heavy oil in the heavy oil separates onto the inner circumferential surface of the casing 1 and the heavy oil separates onto the outer circumferential surface of the rotating cage 6. It flows down along the inner bottom of the casing 1 as drain.

The heavy oil is further supplied into the casing 1 under the pressure of the heavy oil, and a portion of the heavy oil is transferred from the upper end of the rotating cage 6 to each of the circulation holes 8...
and the other flows into the interior of the rotating cage 6 through the opening at the lower end of the rotating cage 6, respectively. The heavy components that have flowed in are further encouraged to rotate by the blades 9. Then, due to the centrifugal force caused by the rotation, contaminants in the mass aggregate on the inner peripheral surface of the rotating case 6, and each small hole 7
... and scatters to the outer circumferential side of the rotating cage 6, and flows down to the inner bottom of the casing 1 together with the above-mentioned heavy components. The heavy substance from which impurities have been removed in this way swirls around the outer circumference of the filter cylinder 13, and during this swirl, it gradually passes through the through holes 17 of the filter 14 and enters the filter cylinder 13. Inflow. At this time, the heavy part rotates around the outer periphery of the fixed filter 14 at high speed, and the periphery of each through hole 17 of the filter 14 is formed into a sharp thin blade shape. A part of it flows into the filter cylinder 13 without being sheared by the periphery of each of the through holes 17 . Then, due to the shearing action of the roasting process, minute particles in the final substance are splashed or cut off, and therefore - inside the recessed part 13, @
Only the clean fraction in the mass, or at least the clean fraction containing extremely small particles, flows in. Since normal particles in the light fraction are splashed or cut off based on the high-speed rotation of the heavy fraction as described above, each through hole 17 of the filter 14
There is no clogging, and the purification of heavy substances is always carried out efficiently. The clean portion that has flowed into the filter cylinder 13 is sequentially supplied to, for example, a marine engine through the entire outflow pipe 11, and is used as power fuel.

As a result of this process, condensate due to deposits in the heavy oil settles and accumulates in the inner bottom of the casing 1, but the condensate is discharged through the drain pipe 23 as appropriate. Further, if the filter 14 of the off-shore retreat section 13 becomes conspicuous due to long-term use, the shutoff valve 21 is opened while the device continues to operate. Due to this opening, the internal pressure of the oil inside the casing 1 causes the oil to flow through the gap 19, the flow pipe 10, and the outlet pipe 2.
As a result, the pressure on the inner circumference of the rotating cage 6 decreases, and in response to this pressure drop, the oil in the filter cylinder 13 flows through the through holes 17 to the inner circumferential side of the rotating cage 6. As a result, the blockages in each through hole 17 are removed.

That is, when the shutoff valve 21 is opened, the rotating cage 6 acts as a pump to cause the oil in the filter tube 13 to flow back, thereby making it easy to clean the clogged filter tube 13 without disassembling the filter tube 13. It is something that can be done.

In the above explanation, we took the case of purifying heavy oil as an example, but the same applies to cases where impurities in lubricating oil are removed and purified, and even when polluted liquid is purified. It can be used for. Furthermore, in the above embodiment, the periphery of the filter hole is made into a thin blade shape in order to give good shear to the oil, but since it is possible to give sufficient shear just by swirling the oil, There is no need to do so.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to reliably prevent clogging of the filter over a long period of time, and it is also possible to accurately remove minute particles and achieve good purification.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, FIG. 2 is a cross-sectional view of the same, and FIG. 3 is a cross-sectional view showing an enlarged part of a filter in the same embodiment. DESCRIPTION OF SYMBOLS 1...Casing, 6...Rotating cage, 7...Small hole, 9...Blade, 11...Outflow pipe, 13...E retreat, 14...Through hole, 22... ...Introduction tube. Applicant's representative Patent attorney Suzu Hikota > 2
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Claims (1)

[Claims] A cylindrical casing, a rotating cage that is housed concentrically inside the casing, has numerous small holes on its circumferential surface, and multiple blades on its inner circumferential wall, and a rotating cage that is housed concentrically inside the rotating cage. The rotating cage is rotated at high speed, and in this state, the inside of the casing is A passing device characterized in that a liquid is supplied at a constant pressure to a rotating cage, and the liquid is swirled around the outer circumference of a passing strip based on the rotation of a rotating cage.