JP4995695B2 - Electrostatic oil purification device - Google Patents

Description

  The present invention relates to an oil purifier using static electricity. In particular, the present invention relates to an electrostatic oil purification apparatus for removing and purifying contaminants (wear sludge) contained in industrial oil such as lubricating oil and hydraulic hydraulic oil.

  Conventionally, an electrostatic oil purifying apparatus has a structure in which a pair of yin and yang electrodes is parallel, and a filter made of a dielectric material such as paper having a dielectric constant larger than that of oil is arranged between both electrodes. (For example, refer to Patent Document 1).

Specifically, in the electrostatic oil purification apparatus of Patent Document 1, an electric field is formed between both electrodes by applying a DC voltage between both electrodes. Wear sludge contained in the oil is attracted by the static force generated by the electric field, and accumulates and adheres to the filter. Moreover, the filter used for the conventional electrostatic oil purification apparatus is generally made of a disposable filter medium.
JP-A-56-163713

  In the invention of Patent Document 1, it is necessary to disassemble the oil purification device and replace the filter in order to remove the wear sludge trapped by the filter after the oil purification operation is completed. Thereby, oil purification work becomes complicated. In addition, when a disposable filter is used, there is a problem that the running cost of the oil purifier increases and it does not meet user needs.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electrostatic oil purifying apparatus that can simplify the oil purifying operation and has a low running cost.

An electrostatic oil purifying apparatus of the present invention includes a housing having an inlet and an outlet for oil containing wear sludge, at least one pair of electrodes provided at a predetermined interval in the housing, and one pair of the electrodes A DC voltage applying means for applying a DC voltage between them to attract the wear sludge from one of the pair of electrodes to the other, and further comprising an electrostatic oil purification device provided between the pair of electrodes A collector for trapping the generated wear sludge, a drive unit for rotating the collector, and a wear sludge fixed and adhered to the collector in the vicinity of the collector by the rotation of the collector. It has a mechanical separation means for scraping , and a storage chamber for storing the accumulated wear sludge scraped and provided below the collector of the housing.

  The electrostatic oil purifying apparatus of the present invention includes a separating means for separating the accumulated wear sludge accumulated and adhered by electrostatic force, and a storage chamber for accommodating the separated accumulated wear sludge, thereby electrostatically collecting the accumulated wear sludge. It can be separated and housed in the housing of the oil purification device. That is, the oil purification device can be easily removed from the electrostatic oil purification device without disassembling the oil purification device after the oil purification operation is completed, and the complexity of the oil purification operation can be improved. Further, the electrostatic oil purifying apparatus of the present invention is provided with the separating means, so that the use or replacement work of the conventional filter becomes unnecessary. As a result, it is possible to reduce the working time due to the replacement of the filter and the running cost caused by the use of the filter. Furthermore, the electrostatic oil purifying apparatus of the present invention is provided with the separating means and the storage chamber at the same time, thereby facilitating the automation of the electrostatic oil purifying apparatus from the oil purification to the removal of the separated worn sludge. Increases efficiency.

The electrostatic oil purification apparatus of the present invention has a collector that traps wear sludge between a pair of electrodes . By having the collector that captures the wear sludge, the wear sludge attracted by the electrostatic force between the electrodes can be captured more easily and efficiently.

The separation means of the electrostatic oil purification apparatus of the present invention is a mechanical separation means for mechanically separating the wear sludge accumulated and adhered to the collector . Accordingly, the accumulated wear sludge can be separated from the adhesion destination (collector) by directly contacting the wear sludge mechanically.

Further, the mechanical separation means of the electrostatic oil purifying apparatus of the present invention comprises a scraping member and a driving means for moving the scraping member and the collector relative to each other. The accumulated wear sludge can be separated from the adhesion destination by moving the scraping member and the adhesion destination (collector) relative to each other via the driving means.

The accommodation chamber of the electrostatic oil purification apparatus of the present invention preferably has a cleaning window for removing collected accumulated sludge. Thereby, the accumulated wear sludge separated and collected from the oil can be more easily removed from the oil purification device, and the complexity of the oil purification work can be reduced.

  The electrostatic oil purifying apparatus of the present invention can separate and accommodate the wear sludge mixed in the oil by collecting and adhering it by electrostatic force. Furthermore, it becomes easy to realize automation and efficiency improvement of the electrostatic oil purification apparatus from the oil purification to the removal of the accumulated wear sludge separated, and the burden on the worker can be reduced.

  The electrostatic oil purifying apparatus of the present invention includes a housing, at least one pair of electrodes, a DC voltage applying unit, a separating unit, and a storage chamber.

  The housing is a container that can receive and purify oil containing cleansing sludge, and can be provided with an inlet for introducing oil and a outlet for outlet after purification. In addition, at least a pair of electrodes, a separating unit, a storage chamber, and the like are installed in the internal space of the housing.

  Further, a guide groove can be formed on the inner wall surface of the housing so as to hold electrode pairs (at least a pair of electrodes) at a predetermined interval (distance). By inserting the electrode pair into the guide groove, the electrode pair can be held in the housing in a stable state at a predetermined interval. In addition, any insulating material or conductive material can be used as long as it has an appropriate strength as a material constituting the housing. Note that when the housing is made of a conductive metal or the like, the housing itself can function as an electrode.

  The electrode pairs are provided in the housing at a predetermined interval, and can be provided as a plurality of pairs. In addition, a plurality of pairs of electrodes (anode, cathode) in which negative anodes are alternately arranged can form a stable electric field while having a predetermined strength, and efficiently collect contaminants such as wear sludge. Can be affixed.

  Moreover, the electrostatic oil purification apparatus of this invention can set the electric field strength between a pair of adjacent electrodes according to the electroconductivity of the oil containing abrasion sludge. The average electric field strength between the electrodes (cathode, anode) is preferably set to 0.5 to 0.7 kV / mm with respect to oil having normal conductivity. For oil with high conductivity, the average electric field strength between the electrodes can be 0.1 kV / mm or less. Further, the distance (distance) between the pair of electrodes and the magnitude of the DC voltage applied between the electrodes can be adjusted so that the average electric field strength between the pair of adjacent electrodes is within the above range. For example, when purifying oil with high conductivity, the average electric field strength between the electrodes is lowered by lowering the applied DC voltage or increasing the distance between the electrode pair (cathode, anode), etc., depending on the type of oil. It is possible to optimize the voltage and spacing between the electrodes.

  The DC voltage applying means provides a predetermined positive / negative DC voltage, and can apply the DC voltage between at least a pair of electrodes arranged in the housing. When one of the electrode pairs is electrically connected to a metal housing having electrical conductivity, the housing itself can function as an electrode. For example, when a DC voltage is applied to the electrode pair via the DC voltage application means, one of the electrode pairs may be connected to a DC power supply (DC voltage application means), and the other electrode pair may be grounded via the housing. it can.

The separation means separates the accumulated wear sludge accumulated and adhered to the surface of the electrode or the like by electrostatic force, and can be specifically exemplified by a mechanical separation means.

  The mechanical separation means physically removes the accumulated wear sludge accumulated and adhered to the electrode or the like by using an appropriate means. For example, the accumulated wear sludge accumulated and adhered to the electrode can be scraped off using means such as a scraper or a brush. Therefore, it is possible to separate and collect the accumulated wear sludge that has accumulated and adhered easily.

  Further, the mechanical separation means can include a scraping member, and a driving means for relatively moving the scraping member and at least the other of the electrodes. Examples of the scraping member include the above-described scraper and brush. By the relative movement between the other electrode (the electrode on which wear sludge is accumulated and adhered by electrostatic force) and the scraping member, the accumulated wear sludge accumulated and adhered to the electrode can be scraped off via the scraping member. it can. That is, the abrasion sludge accumulated and adhered to the electrode is scraped off and separated from the electrode by the relative movement between the electrode and the scraping portion. Therefore, it is possible to separate and collect the accumulated wear sludge that has accumulated and adhered easily.

The storage chamber stores the accumulated wear sludge separated by the separating means, and can be formed integrally with the housing. Moreover, it is preferable to form the storage chamber below the housing in the direction of gravity. Since the storage chamber is formed below the housing, the accumulated wear sludge separated by the separating means falls downward due to gravity and is collected in the storage chamber. However, the present invention is not limited to this, and the accommodation chamber can be provided at other positions such as a side portion of the housing.

The electrostatic oil purification apparatus of the present invention has a collector that traps wear sludge between a pair of electrodes . In addition, since it is advantageous for the collector to have a larger surface area for capturing the wear sludge, it is preferable to perform a surface treatment for increasing the surface area. For example, a collector can be comprised with the metal mesh continuously formed in the mountain shape on the surface.

  Further, by interposing an insulating member between the housing and the collector, the collector can be held in the housing in an insulated state.

  In the electrostatic oil purification apparatus of the present invention, the size of the wear sludge contained in the oil can preferably be purified up to submicron. In other words, the electrostatic oil purification apparatus of the present invention shows high purification performance particularly for fine-size sludge particles up to submicron, and captures such submicron-size wear sludge particles most efficiently. Can do.

  Moreover, the electrostatic oil purifying apparatus of the present invention can have an AC voltage particle size promoting means for promoting an increase in the particle size of the wear sludge by applying an AC voltage to the oil containing the wear sludge in advance. By applying an AC voltage to the oil containing the wear sludge, an increase in the particle size of the wear sludge is promoted by the periodic vibration of the AC voltage. As a result, the wear sludge particles become large and are easily subjected to an attracting action from electrostatic force. Therefore, the wear sludge tends to accumulate and adhere to the electrode.

First, an apparatus including the basic configuration of the electrostatic oil purification apparatus of the present invention will be described.
( Basic configuration )
A basic configuration will be described with reference to FIGS. FIG. 1 is a schematic longitudinal sectional view of an electrostatic oil purifying apparatus having a basic configuration . FIG. 2 is a vertical cross-sectional conceptual view of the electrostatic oil purifying device viewed from the A1 direction shown in FIG.

As shown in FIGS. 1 and 2, the electrostatic oil purifying apparatus having the basic configuration mainly includes a housing 1, a high voltage electrode 21, a ground electrode 22, a DC voltage applying means 3, and a voltage control separating means 4 </ b> A. And the storage chamber 5. The high voltage electrode 21 and the ground electrode 22 constitute a pair of electrodes (negative anode) of the present invention.

  The housing 1 includes a metal box-shaped oil tank 110 having conductivity and a lid 111 provided above the oil tank 110. The oil tank 110 includes side walls 112 (four sides) and a bottom 113, and forms an internal space 101 therein. Further, the side wall 112 is provided with an inlet 121 for introducing oil containing wear sludge and an outlet 122 for deriving purified oil. The inlet 121 is provided at the upper part of the side wall 112, and the outlet 122 is provided at the lower part of the side wall 112.

  The high voltage electrode 21 is provided in the internal space 101 of the housing 1 with the insulating member 102 interposed therebetween, and includes a first electrode base portion 211 and a first parallel electrode portion 212. The first parallel electrode portion 212 is composed of a plurality of plate-like conductive members arranged in parallel with each other at a predetermined interval. Further, the first parallel electrode portion 212 is arranged and connected to the first electrode base portion 211 in a vertical direction. Specifically, as shown in FIG. 1, the first electrode base 211 is located in the lower part of the oil tank 110 and is arranged in parallel with the bottom 113. The first parallel electrode portion is disposed in parallel with the side wall 112 (both left and right sides shown in FIG. 1). A plurality of through holes 2110 are formed in the first electrode base 211.

  The first electrode base 211 is connected to the DC port 103 inserted from the side wall 112 of the oil tank 110 with the insulating member 102 interposed therebetween. As the insulating member 102, a plastic member having appropriate strength and rigidity can be used.

  The ground electrode 22 is provided in the internal space 101 of the housing 1 and includes a second electrode base portion 221 and a plurality of second parallel electrode portions 222. The second parallel electrode portion 222 is arranged and connected perpendicularly to the second electrode base portion 221. Specifically, as shown in FIG. 1, similarly to the first parallel electrode portion 212, a plurality of second parallel electrode portions 222 are also arranged in parallel with each other at a predetermined interval from a plate-like conductive member. Become. The second parallel electrode portions 222 are inserted one by one between the two adjacent first parallel electrode portions 212, and a certain interval is provided between the first parallel electrode portion 212 and the second parallel electrode portion 222. ing. A guide groove (not shown) is previously formed on the inner wall surface of the side wall 112 of the oil tank 110 of the housing 1 so that the first parallel electrode portion 212 and the second parallel electrode portion 222 are easily spaced apart from each other. Can be formed and placed.

  The second electrode base 221 is located on the upper part of the oil tank 110 and is arranged in parallel with the lid 111. A plurality of through holes 2210 are formed in the second electrode base portion 221. A spring 104 is provided between the second electrode base 221 and the lid 111, and the second electrode base 221 (earth electrode 22) is fixed to the lid 111 via the spring 104. In addition, since the spring 104 and the lid portion 111 are configured to be electrically conductive, the ground electrode 22 is conductively connected to the housing 1. Thereby, the earth electrode 22 is grounded via the housing 1.

  Thus, with the above-described configuration, a stable electric field is formed between the first parallel electrode portion 212 (high voltage electrode 21) and the second parallel electrode portion 222 (earth electrode 22). The distance (interval) between the first parallel electrode portion 212 and the second parallel electrode portion 222 is optimized according to the required electric field strength.

  The DC voltage applying means 3 is composed of a DC high voltage power source. A predetermined DC potential is applied to the DC port 103 inserted in the side wall 112 of the oil tank 110 by the DC voltage applying means 3. If many of the sludges contained in the oil have a positive charge, a negative potential is output from the DC voltage application means 3, and the first parallel electrode portion 212 (high voltage electrode 21) serves as a cathode. On the other hand, the second parallel electrode portion 222 (earth electrode 22) serves as an anode for grounding (shown in FIG. 3). Thus, an electric field is formed between the electrodes (between the high voltage electrode 21 and the ground electrode 22), and the wear sludge having a positive charge is attracted by the electrostatic force and accumulated on the cathode (the high voltage electrode 21). Also, some of the sludge having negative charges is accumulated on the anode (earth electrode 22). FIG. 3 shows the state of wear sludge particles between the yin and yang electrodes.

  Further, when many wear sludges contained in the oil have a negative charge, a positive potential can be output from the DC voltage application means 3. At this time, the first parallel electrode portion 212 (high voltage electrode 21) serves as an anode. On the other hand, the second parallel electrode portion 222 (earth electrode 22) serves as a cathode for grounding (shown in FIG. 4). Due to the electric field formed between the electrodes, the abrasion sludge having a negative charge is accumulated on the anode (high voltage electrode 21). FIG. 4 shows the state of wear sludge particles between the yin and yang electrodes.

Further, the electrostatic oil purifying apparatus having the basic configuration is provided with voltage control separating means 4A. The voltage control separation unit 4A can adjust the potential (voltage) output from the DC voltage application unit 3. That is, the high voltage electrode 21 can be switched from the cathode to the anode or from the anode to the cathode by adjusting the potential output from the DC voltage application means 3. Thus, the charging polarity of the electrode can be changed by changing the potential of the electrode. As a result, the accumulated wear sludge having a positive charge accumulated and adhered to the cathode is separated from the surface of the electrode along the direction of gravity due to a change in the charging polarity of the electrode to which it adheres.

  A housing chamber 5 formed integrally with the housing 1 is provided below the housing 1 in the direction of gravity. The storage chamber 5 includes an opening 501 that communicates with the bottom 113 of the housing 1 and opens into the internal space 101 of the housing 1, a side surface 502, a bottom 503, and a discharge 504. The opening 501 has a larger diameter than the bottom 503, and is connected to the bottom 503 via a side surface 502 that is a slope. Thus, the storage chamber 5 forms an inverted truncated cone-shaped internal storage space. By providing the side surface portion 502 that becomes an inclined surface, the accumulated wear sludge that has dropped from the electrode is more easily collected in the bottom portion 503 of the storage chamber 5. Further, the discharge portion 504 is formed on the bottom portion 503, and oil can be completely discharged from the housing 1 during cleaning or the like.

  Further, as shown in FIG. 2, a cleaning window 505 for removing the accumulated wear sludge collected in the storage chamber 5 is formed on the side surface portion 502 that is a slope. By forming the cleaning window 505 in the storage chamber 5, the accumulated wear sludge separated and collected from the oil can be more easily removed from the oil purification device, and the complexity of the oil purification work can be reduced.

Next, the operation of the electrostatic oil purifier having the basic configuration will be described.

  Oil containing wear sludge is introduced into the upper space of the housing 1 of the electrostatic oil purifier from the introduction port 121 and flows into the internal space 101 through the through hole 2210 of the second electrode base 221. Further, the oil stored in the internal space 101 further flows out to an external pipe line (not shown) through the outlet port 122 located below the oil tank 110. The outlet 122 is closed until the oil fills the internal space 101 of the oil tank 110. Further, flow rate control means (not shown) is provided at the inlet 121 and the outlet 122. By controlling the flow rate of the oil, the oil flows through the oil tank 110 at an appropriate flow rate and is purified. The flow rate of oil in the oil tank 110 can be optimized according to the strength of the electric field formed between the electrodes during purification.

  In the internal space 101 of the oil tank 110, an electric field is formed between the first parallel electrode portion 212 and the second parallel electrode portion 222, and wear sludge contained in the oil is attracted to the electrode by electrostatic force.

  As shown in FIGS. 1 and 2, as the oil containing wear sludge flows through the oil tank 110, the wear sludge accumulates and adheres to the electrodes. After the oil purification process, the voltage control separation means 4A is operated, and a reverse voltage is applied from the DC voltage application means 3 so as to form a reverse electric field between the high voltage electrode 21 and the ground electrode 22. Application is made between the electrode 21 and the ground electrode 22. As a result, the electric field direction between the high voltage electrode 21 and the ground electrode 22 is reversed, and the accumulated wear sludge accumulated and adhered to the electrode by electrostatic force is applied to each electrode (high voltage electrode) by the repulsive force of the same kind of charging polarity. 21, away from the earth electrode 22) and falls along the direction of gravity. The accumulated wear sludge that has fallen enters the storage chamber 5 through the through hole 2110.

In this way, the wear sludge contained in the oil is attracted to the electrodes (high voltage electrode 21 and ground electrode 22) by electrostatic force, and then accumulated and adhered, and then separated from the electrode again by the electrostatic force in the reverse direction. Collected at 5.
( Example )
The electrostatic oil purification apparatus of the present embodiment is basically the same as the configuration of the electrostatic oil purification apparatus having the basic configuration described above. Hereinafter, a different part from a basic structure is demonstrated . In addition, about the part similar to a basic structure, it demonstrates using the same code | symbol.

  This embodiment will be described with reference to FIGS. FIG. 5 is a vertical cross-sectional conceptual diagram of the electrostatic oil purifying apparatus of the present embodiment. FIG. 6 is a longitudinal sectional conceptual view of the electrostatic oil purifying device viewed from the A2 direction shown in FIG.

  As shown in FIGS. 5 and 6, the electrostatic oil purifying apparatus of the present embodiment mainly includes a housing 1, a high voltage electrode 21, a ground electrode 22, a collector 23, a DC voltage application means 3, a mechanical device. It comprises a separating means 4B and a storage chamber 5.

The mechanical separation means 4B of this embodiment constitutes the separation means of the present invention. Further, the electrostatic oil purifying apparatus of the present embodiment is provided with a collector 23 between the electrodes (between the high voltage electrode 21 and the ground electrode 22). In addition, about structures other than the mechanical separation means 4B (separation means) and the collector 23 of the electrostatic oil purification apparatus of this Embodiment, it is the same as that of a basic structure .

  In the electrostatic oil purifying apparatus of the present embodiment, the collector 23 is formed by a metal plate-like member that is inserted and arranged at the center between a pair of parallel electrodes (first and second parallel electrode portions 212 and 222). Composed.

  The collector 23 includes a side surface 231 facing the first parallel electrode portion 212 and a side surface 232 facing the second parallel electrode portion 222, and is formed as a hexagon (shown in FIG. 6). 421 is vertically inserted and fixed in the center of the collector 23. The rotating shaft 421 is connected to the central portion of the collector 23 with the insulating member 102 interposed therebetween.

  The collector 23 was inserted between the high voltage electrode 21 and the ground electrode 22 and arranged at a predetermined interval, thereby being attracted by the electric field formed between the electrodes (between the high voltage electrode 21 and the ground electrode 22). The wear sludge is captured and collected by the collector 23.

  If many of the sludges contained in the oil have a positive charge, a negative potential is output from the DC voltage application means 3, and the first parallel electrode portion 212 (high voltage electrode 21) serves as a cathode. On the other hand, the second parallel electrode portion 222 (earth electrode 22) serves as an anode for grounding (shown in FIG. 7). In this way, an electric field is formed between the electrodes (between the high voltage electrode 21 and the ground electrode 22), and the wear sludge having a positive charge is attracted by the electrostatic force, and the side surface 231 of the collector 23 (facing the high voltage electrode 21). Is accumulated on the side). Further, some of the sludge having negative charges is accumulated on the side surface 232 of the collector 23 (the side facing the ground electrode 22). FIG. 7 shows the state of wear sludge particles between the yin and yang electrodes.

  Further, when many wear sludges contained in the oil have a negative charge, a positive potential can be output from the DC voltage application means 3. At this time, the first parallel electrode portion 212 (high voltage electrode 21) serves as an anode. On the other hand, the second parallel electrode portion 222 (earth electrode 22) serves as a cathode for grounding (shown in FIG. 8). Due to the electric field formed between the electrodes, the wear sludge having a negative charge is accumulated on the side surface 232 of the collector 23 (side facing the ground electrode 22), and the wear sludge having a positive charge is accumulated on the side surface 231 of the collector 23 (high voltage electrode). 21). FIG. 8 shows the state of wear sludge particles between the yin and yang electrodes.

  Further, the mechanical separation means 4B of this embodiment includes a scraper 41 and a drive unit 42. The scraper 41 constitutes a scraping member of the present invention.

  As shown in FIG. 5, the scraper 41 is inserted between the first and second parallel electrode portions 212 and 222 and the collector 23 arranged in parallel, and is fixed to the housing 1. Specifically, the scraper 41 is disposed in the vicinity of the collector 23 so as to scrape off the worn sludge accumulated on the side surfaces 231 and 232 of the collector 23.

  As shown in FIG. 5, the drive unit 42 includes a rotation shaft 421 and a motor 422 that rotationally drives the rotation shaft 421. The rotating shaft 421 is inserted into the central portion of the collector 23 and connected to the collector 23 via the insulating member 102. Further, through holes 212 s and 222 s are formed at predetermined positions in the center of the first and second parallel electrode portions 212 and 222 so that the rotating shaft 421 can be passed through and fixed to the housing 1. Accordingly, the rotation shaft 421 is fixed to the side surface 112 of the housing 1 and is disposed perpendicular to the first and second parallel electrode portions 212 and 222 and the collector 23.

As shown in FIG. 6, by providing the rotation shaft 421 and the motor 422, the collector 23 rotates around the rotation shaft 421 and rotates relative to the scraper 41 fixed to the housing 1. Do exercise. Thereby, the accumulated wear sludge accumulated and adhered to the side surfaces 231 and 232 of the collector 23 via the scraper 41 can be scraped off. Further, the accumulated wear sludge away from the side surfaces 231 and 232 of the collector 23 falls along the direction of gravity and is collected in the storage chamber 5 through the through hole 2110.
(Other)
The plate-like member constituting the collector can have a through hole on the surface thereof.
Thereby, the oil can be passed through in the thickness direction of the electrode. The wear sludge contained in the oil can accumulate and adhere more efficiently.

  The electrostatic oil purification apparatus of the present invention can be used in fields such as purification and regeneration of industrial oil.

It is a longitudinal cross-sectional conceptual diagram of the electrostatic oil purification apparatus of the basic composition of this invention. FIG. 2 is a schematic cross-sectional view in the A1 direction shown in FIG. 1 of the electrostatic oil purification apparatus having the basic configuration of the present invention. 2 shows the state of wear sludge particles between electrodes according to the basic configuration of the present invention. 2 shows the state of wear sludge particles between electrodes according to the basic configuration of the present invention. It is a longitudinal cross-sectional conceptual diagram of the electrostatic oil purification apparatus of the Example of this invention. FIG. 6 is a conceptual cross-sectional view in the A2 direction shown in FIG. 5 of the electrostatic oil purifying apparatus according to the embodiment of the present invention. The state of the abrasion sludge particle | grains between the electrodes which concerns on the Example of this invention is shown. The state of the abrasion sludge particle | grains between the electrodes which concerns on the Example of this invention is shown.

1: Housing 121: Inlet port 122: Outlet port 21: (High voltage) electrode 22: (Earth) electrode 3: DC voltage applying means 4A: Voltage control separating means 4B: Mechanical separating means 5: Accommodating chamber

Claims (2)

A housing having an inlet and an outlet for oil containing wear sludge, at least one pair of electrodes provided at predetermined intervals in the housing, and applying the DC voltage between the pair of electrodes, the wear sludge A DC voltage applying means for attracting a pair of the electrodes from one to the other, and an electrostatic oil purifying device comprising:
Furthermore, a collector that captures wear sludge provided between the pair of electrodes,
A drive for rotating the collector;
Mechanical separation means fixed below the housing in the vicinity of the collector and scraping off the worn sludge accumulated and adhered to the collector by rotation of the collector;
A storage chamber for storing the accumulated wear sludge scraped and provided below the collector of the housing;
An electrostatic oil purifying device comprising: 2. The electrostatic oil purifying apparatus according to claim 1, wherein the housing has a cleaning window for removing accumulated wear sludge collected in the storage chamber.

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