Paint film special filter

Abstract

The utility model belongs to oil purification equipment technical field, specifically disclose a kind of filter oil machine special for paint film removal, including coarse filter chamber, electrostatic chamber, ion exchange resin chamber;The top of coarse filter chamber is connected with oil inlet pipe, the bottom of coarse filter chamber is communicated with the bottom of electrostatic chamber, and the communicating place is equipped with oil pump, coarse filter chamber is equipped with the coarse filter screen of transverse;Spiral center electrode and cylindrical outer electrode plate are equipped in electrostatic chamber, electrode of center electrode and outer electrode plate is opposite, outer electrode plate and electrostatic chamber inner wall are pasted;The top of ion exchange resin chamber is communicated with the top of electrostatic chamber, ion exchange resin filter element is loaded in ion exchange resin chamber, and the bottom of ion exchange resin chamber is equipped with outlet and communicated with external device. Using the technical scheme, charge polymerization technology and ion exchange technology are organically combined, and the synchronous removal of dissolubility and non-dissolubility paint film pollutants is realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil purification equipment, and relates to a special oil filter for removing paint film. Background Technology

[0002] In mechanical lubrication systems, lubricating oil produces contaminants such as varnish during use. This varnish reduces clearances between equipment components, leading to abnormally high bearing temperatures, increased equipment vibration, unplanned downtime, and in severe cases, equipment damage. Varnish removal filters are primarily used to remove varnish from lubricating oil, preventing it from harming the equipment.

[0003] Traditional oil filters primarily employ physical filtration methods, which can only remove solid particulate contaminants and cannot effectively remove varnish precursors and tiny varnish particles dissolved in the oil. Existing technologies, such as electrostatic filtration or ion exchange, suffer from low processing efficiency and limited applicability when used alone. For example, a varnish removal oil filter for air compressor lubrication disclosed in patent CN202220579903.X only uses a coarse filter and an electrostatic plate for processing. Utility Model Content

[0004] The purpose of this invention is to provide a special oil filter for removing paint film, which organically combines coarse filtration, charge polymerization technology and ion exchange technology to achieve simultaneous removal of soluble and non-soluble paint film pollutants.

[0005] To achieve the above objectives, the basic solution of this utility model is: a special oil filter for removing paint film, comprising a coarse filtration chamber, an electrostatic chamber, and an ion exchange resin chamber;

[0006] The top of the coarse filter chamber is connected to an oil inlet pipe, and the bottom of the coarse filter chamber is connected to the bottom of the electrostatic chamber. An oil pump is installed at this connection point, and a horizontal coarse filter screen is installed inside the coarse filter chamber.

[0007] The electrostatic chamber is equipped with a spiral-shaped central electrode and a cylindrical external electrode plate. The electrodes of the central electrode and the external electrode plate are opposite, and the external electrode plate is attached to the inner wall of the electrostatic chamber.

[0008] The top of the ion exchange resin chamber is connected to the top of the electrostatic chamber. The ion exchange resin chamber is equipped with an ion exchange resin filter element, and the bottom of the ion exchange resin chamber has an outlet that connects to external equipment.

[0009] The working principle and beneficial effects of this basic solution are as follows: This technical solution discharges the contaminated oil into the coarse filtration chamber through the oil inlet pipe, and removes large particulate impurities from the oil through the coarse filter screen.

[0010] Then, the oil is pumped into the electrostatic chamber through the connection between the bottom of the coarse filtration chamber and the bottom of the electrostatic chamber. The oil enters from the bottom of the electrostatic chamber and flows upwards. After purification, the cleanest oil naturally sits at the top of the container. Despite the electrostatic field adsorption, there may still be a very small number of unadsorbed microparticles or tiny fragments generated during scraping. Placing the outlet at the top of the electrostatic chamber provides maximum settling distance for these heavier particles. They will fall downwards due to gravity and will not be carried out of the electrostatic chamber, providing additional buffering and protection.

[0011] The bottom inlet and top outlet design creates the longest flow channel, ensuring that all oil undergoes complete electrostatic field treatment and avoiding "short circuits" (oil leaving as soon as it enters).

[0012] Furthermore, a spiral-shaped central electrode plate and a cylindrical external electrode plate are set to increase the contact area between the electrode and the oil, so that the electrode can fully contact the oil and is conducive to adsorbing particulate matter.

[0013] The oil continuously enters the electrostatic chamber and undergoes electrostatic adsorption treatment. It then flows into the ion exchange resin chamber through the top outlet of the electrostatic chamber. The soluble paint film is adsorbed and removed by the ion exchange resin filter element in the ion exchange resin chamber. Finally, the purified oil is discharged from the bottom outlet of the ion exchange resin chamber and enters the external equipment.

[0014] By combining charge polymerization and ion exchange technologies, both soluble and non-soluble paint film contaminants can be removed simultaneously, resulting in improved purification efficiency compared to single technologies.

[0015] Furthermore, the bottom of the central electrode is connected to a first power source that controls its rotation.

[0016] The first power source controls the rotation of the central electrode, causing turbulence in the oil during flow, increasing the interaction time between paint film particles and the electrostatic field, and improving adsorption efficiency.

[0017] Furthermore, the inner wall of the electrostatic chamber is configured in a funnel shape, and the central electrode is coaxial with the electrostatic chamber.

[0018] The oil enters from the bottom of the electrostatic chamber and flows upward through a gradually expanding conical space, where its flow rate naturally decreases. This lower flow rate means that particles in the oil have a longer residence time in the electrostatic field, greatly increasing the chance of them being adsorbed. The conical structure of the inner wall of the electrostatic chamber better guides the oil flow, ensuring a more uniform distribution around the central electrode, avoiding dead zones, and allowing all the oil to be effectively treated.

[0019] Furthermore, it also includes a coarse filter cleaning mechanism, which includes a rotating shaft, a vibrator, a groove, a sealing plate, an elastic element, and a receiving chamber;

[0020] The rotating shaft is fixedly connected to one end of the coarse filter screen, and the rotating shaft is connected to a second power source that controls its rotation. The second power source is installed on the side wall of the coarse filter chamber.

[0021] The vibrator is connected to the coarse filter screen, the groove is set on the side wall of the coarse filter chamber near the rotating shaft, and the sealing plate is slidably connected to the groove opening.

[0022] The elastic element is disposed in the groove, with one end of the elastic element connected to the inner wall of the groove and the other end connected to the sealing plate;

[0023] The receiving chamber is located below the groove and communicates with the bottom of the groove.

[0024] When the coarse filter needs cleaning, start the second power source to make it flip upwards and gradually swing towards the groove and sealing plate until it presses against the sealing plate and pushes the sealing plate into the groove a certain distance.

[0025] At this point, the upper surface of the coarse filter screen is tilted downwards towards the groove. The vibrator is then activated, causing the coarse filter screen to vibrate and shake off contaminants from its upper surface into the groove. The contaminants then fall into the receiving chamber. Because the upper surface of the coarse filter screen is tilted downwards towards the groove, the contaminants on its upper surface only fall into the groove and will not fall back into the coarse filter chamber during the cleaning process, causing secondary pollution.

[0026] After cleaning the coarse filter, the second power source can be reset, causing the coarse filter to reset as well. The coarse filter chamber no longer presses against the sealing plate, and the sealing plate resets under the action of the elastic element, resealing the groove to prevent contaminated oil from entering.

[0027] Furthermore, the coarse filter cleaning mechanism also includes a control button, a pressure sensor, and a pressure comparator;

[0028] The control button is located on the outer wall of the coarse filter or in the staff's monitoring room. The output of the control button is connected to the start-up terminal of the pressure sensor and the start-up terminal of the second power source.

[0029] The pressure comparator is installed at a position where the sealing plate can abut against the coarse filter screen, and the output terminal of the pressure comparator is connected to the first input terminal of the pressure comparator.

[0030] The second input terminal of the pressure comparator is connected to a pressure threshold memory, and the output terminal of the pressure comparator is connected to the stop terminal of the second power source and the start terminal of the vibrator.

[0031] A control button is provided, which operators can operate as needed to activate the pressure sensor and the second power source. When cleaning the coarse filter is required, the pressure sensor and the second power source are activated, causing the second power source to oscillate.

[0032] The pressure sensor collects the pressure signal of the coarse filter pressing against the sealing plate and transmits it to the pressure comparator. The pressure comparator compares the collected pressure value with the pressure threshold in the pressure threshold memory. If the collected pressure value is greater than or equal to the pressure threshold, the pressure comparator outputs a control signal to the stop end of the second power source, indicating that the coarse filter has swung into position, that is, the upper surface of the coarse filter is tilted downwards towards the groove.

[0033] At the same time, the pressure comparator outputs a control signal to the start end of the vibrator, starting the vibrator and causing the coarse filter screen to vibrate and shake off the contaminants on its upper surface into the groove.

[0034] Furthermore, it also includes an early warning module, which includes an optical turbidity sensor, a turbidity comparator, and an alarm. The optical turbidity sensor is installed at the outlet of the ion exchange resin chamber.

[0035] The first input terminal of the turbidity comparator is connected to the output terminal of the optical turbidity sensor, the second input terminal of the turbidity comparator is connected to a turbidity threshold memory, and the output terminal of the turbidity comparator is connected to the control terminal of the alarm.

[0036] The alarm is installed on the outer wall of the ion exchange resin chamber or in the staff's monitoring room.

[0037] An optical turbidity sensor collects turbidity information of the oil at the outlet of the ion exchange resin chamber and transmits it to a turbidity comparator. The turbidity comparator compares the collected turbidity value with the turbidity threshold stored in the turbidity threshold memory. If the collected turbidity value is greater than the turbidity threshold, it indicates that the oil purification level is not up to standard.

[0038] At this time, the turbidity comparator outputs a control signal to the control terminal of the alarm, which activates the alarm and sends out an alarm signal so that the staff can be informed of the message and check whether the equipment is malfunctioning and causing the oil purification to fail to meet the standard. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the special oil filter for removing paint film according to this utility model;

[0040] Figure 2 This is an enlarged structural diagram of the coarse filtration chamber of the paint film removal oil filter of this utility model.

[0041] The reference numerals in the accompanying drawings include: coarse filter chamber 1, electrostatic chamber 2, ion exchange resin chamber 3, oil inlet pipe 4, central electrode 5, external electrode plate 6, ion exchange resin filter element 7, first power source 8, rotating shaft 9, vibrator 10, groove 11, sealing plate 12, elastic element 13, receiving chamber 14, control button 15, pressure sensor 16, optical turbidity sensor 17, turbidity comparator 18, alarm 19. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0045] This utility model discloses a special oil filter for removing paint film, such as Figure 1 As shown, it includes a coarse filtration chamber 1, an electrostatic filtration chamber 2, and an ion exchange resin chamber 3. The inner wall of the coarse filtration chamber 1 can be sandblasted and then coated with epoxy resin paint (food grade or industrial grade) with a thickness of not less than 100μm. The outer shells of the coarse filtration chamber 1 and the electrostatic filtration chamber 2 can be made of materials such as stainless steel, while the outer shell of the ion exchange resin chamber 3 can be made of stainless steel, Q235B carbon steel with a special lining, etc.

[0046] like Figure 2As shown, the top of the coarse filter chamber 1 is connected to the oil inlet pipe 4, and the bottom of the coarse filter chamber 1 is connected to the bottom of the electrostatic chamber 2. An oil pump is installed at this connection point. If the connection is made through a pipeline, the oil pump is installed inside the pipeline (e.g., riveted, snap-fitted). The coarse filter chamber 1 is equipped with a horizontal coarse filter screen, which can be made of woven mesh (304 or 316 stainless steel wire woven, etc.), perforated plate (e.g., stainless steel plate or low carbon steel plate (requiring galvanizing or spraying for corrosion protection), sintered metal mesh, etc.

[0047] The electrostatic chamber 2 contains a spiral-shaped central electrode 5 and a cylindrical external electrode plate 6. The electrodes of the central electrode 5 and the external electrode plate 6 are opposite in orientation. Positive and negative electrodes can be configured as needed, such as the central electrode 5 being negative (-) and the external electrode plate 6 being positive (+), with particles adsorbed onto the negative central electrode; or the central electrode 5 being positive (+) and the external electrode plate 6 being negative (-), with particles adsorbed onto the inner wall of the external electrode plate 6. The external electrode plate 6 is attached to the inner wall of the electrostatic chamber 2, and can be connected by adhesive, snap-fit, or other methods. Devices requiring electricity in this invention can be electrically connected to a battery or external power source, using wired connections as in existing technologies, or wireless charging.

[0048] The top of the ion exchange resin chamber 3 is connected to the top of the electrostatic chamber 2. The ion exchange resin chamber 3 contains an ion exchange resin filter element 7, such as a strong acid cation exchange resin, mixed bed resin, granular resin, or resin fiber filter element. The bottom of the ion exchange resin chamber 3 has an outlet that connects to external equipment, and an oil pump or other mechanism can also be installed at the outlet.

[0049] Operating procedure: When in use, the contaminated oil is discharged into the coarse filter chamber 1 through the oil inlet pipe 4, and large particulate impurities in the oil are removed by the coarse filter screen.

[0050] Then, the oil is pumped into the electrostatic chamber 2 through the connection between the bottom of the coarse filtration chamber 1 and the bottom of the electrostatic chamber 2. The oil enters from the bottom of the electrostatic chamber 2 and flows upward. After purification, the cleanest oil naturally sits at the top of the container. Although there is electrostatic adsorption, there may still be a very small number of unadsorbed tiny particles or tiny fragments generated during scraping. Placing the outlet at the top of the electrostatic chamber 2 provides maximum settling distance for these heavy particles. They will fall downwards due to gravity and will not be carried out of the electrostatic chamber 2, providing additional buffering and protection.

[0051] The bottom inlet and top outlet design creates the longest flow channel, ensuring that all oil undergoes complete electrostatic field treatment and avoiding "short circuits" (oil leaving as soon as it enters).

[0052] Furthermore, a spiral-shaped central electrode plate 5 and a cylindrical external electrode plate 6 are provided to increase the contact area between the electrode and the oil, allowing them to fully contact the oil and facilitating the adsorption of particulate matter.

[0053] The oil continuously enters the electrostatic chamber 2 and undergoes electrostatic adsorption treatment. It then flows into the top outlet of the electrostatic chamber 2 and enters the ion exchange resin chamber 3. The soluble paint film is adsorbed and removed by the ion exchange resin filter element 7 in the ion exchange resin chamber 3. Finally, the purified oil is discharged from the bottom outlet of the ion exchange resin chamber 3 and enters the external equipment.

[0054] By combining charge polymerization and ion exchange technologies, both soluble and non-soluble paint film contaminants can be removed simultaneously, resulting in improved purification efficiency compared to single technologies.

[0055] In a preferred embodiment of this invention, the bottom of the central electrode 5 is connected to a first power source 8 for controlling its rotation. The first power source 8 can be an electric motor, which is mounted at the bottom of the electrostatic chamber 2 via a frame or other structure. The frame is made of corrosion-resistant metal material, such as stainless steel. The output shaft of the motor is connected to the bottom end of the central electrode 5 (e.g., by welding, bonding, snap-fitting, pin connection, etc.). When the motor is started, it can drive the central electrode 5 to rotate.

[0056] Preferably, start and stop buttons can be installed (e.g., by welding, bonding, snapping, etc.) on the outer wall of electrostatic room 2 or in the staff's monitoring room. The output terminals of start and stop buttons are electrically connected to the start and stop terminals of the motor, respectively. Wireless connection modules such as 5G network, Bluetooth, and WiFi can be used for connection.

[0057] The first power source 8 controls the rotation of the central electrode 5, causing the oil to form turbulence during flow, increasing the interaction time between the paint film particles and the electrostatic field, and improving the adsorption efficiency.

[0058] In a preferred embodiment of this invention, the inner wall of the electrostatic chamber 2 is funnel-shaped, and the central electrode 5 is coaxial with the electrostatic chamber 2. The central electrode 5 can also be vortex-shaped. The coarse filtration chamber 1 can be connected to the lowest end of the electrostatic chamber 2, or it can be connected to the side of the lowest end of the electrostatic chamber 2.

[0059] The oil enters from the bottom of electrostatic chamber 2 and flows upward through a gradually expanding conical space, where its flow rate naturally decreases. A lower flow rate means that particles in the oil have a longer residence time in the electrostatic field, greatly increasing the chance of them being adsorbed. The conical structure of the inner wall of electrostatic chamber 2 better guides the oil flow, making it more evenly distributed around the central electrode 5, avoiding dead zones, and ensuring that all oil is effectively treated.

[0060] Preferably, an electrode scraper can be provided, such as the adjusting motor, lead screw, positioning rod, and rubber scraper mentioned in patent CN202220579903.X, to achieve the effect of scraping the surface of the electrostatic plate and cleaning the electrode plate. An insulating material track can be provided at the edge of the electrode plate, with an electric trolley moving along the track. The scraper is mounted on the electric trolley, and contact between the scraper and the electrode plate surface is restricted. As the electric trolley moves, it drives the scraper to scrape along the electrode plate surface, achieving cleaning.

[0061] In a preferred embodiment of this utility model, the paint film-specific oil filter also includes a coarse filter cleaning mechanism, which includes a rotating shaft 9, a vibrator 10, a groove 11, a sealing plate 12, an elastic element 13, and a receiving chamber 14.

[0062] The rotating shaft 9 is fixedly connected to one end of the coarse filter screen. The rotating shaft 9 is connected to a second power source that controls its rotation. The second power source (which can be a bidirectional motor, etc.) is installed on the side wall of the coarse filter chamber 1. If a placement groove is provided on the side wall of the coarse filter chamber 1, the second power source is placed in the groove (e.g., by welding, bonding, riveting, etc.). The placement groove is sealed, and only the output shaft of the second power source extends out of the groove, or only the rotating shaft 9 extends into the groove. The rotating shaft 9 is connected to the output shaft of the second power source (e.g., by welding, bonding, pin connection, etc.). When the second power source is activated, it drives the rotating shaft 9 to rotate, thus causing the coarse filter screen to oscillate.

[0063] The vibrator 10 is connected to the coarse filter screen. The groove 11 is set on the side wall of the coarse filter chamber 1 near the rotating shaft 9. The sealing plate 12 is slidably connected to the groove 11. The vibrator 10 can be a pneumatic piston vibrator 10, a pneumatic turbine vibrator 10 (such as Martin vibrator from the United States, Kobe Steel from Japan, etc.), or an electric vibrator 10 (such as Schenck vibrator, Martin Engineering, etc.). The bottom of the vibrator 10 has external or internal threads, which can be directly screwed into the "nut seat" welded to the filter screen or equipment, or it can be fixed by bolts through a flange.

[0064] The elastic element 13 is disposed within the groove 11. The elastic element 13 can be a spring device with good elasticity. One end of the elastic element 13 is fixedly connected to the inner wall of the groove 11, and the other end is fixedly connected to the sealing plate 12 (such as by welding, bonding, etc.). In its natural state, the outer surface of the sealing plate 12 is parallel to the groove opening of the groove 11 or slightly extends out of the groove 11. At this time, the sealing plate 12 seals the groove 11. The side wall of the sealing plate 12 can also be provided with sealing materials such as a sealing layer.

[0065] The receiving chamber 14 is located below the groove 11 and communicates with the bottom of the groove 11. The receiving chamber 14 can be fixedly connected to the outer wall of the coarse filter chamber 1 (such as by welding, bonding, etc.), or the two can be forged together in two stages.

[0066] When the coarse filter needs to be cleaned, the second power source is started, causing it to flip upwards and gradually swing towards the location of the groove 11 and the sealing plate 12 until it presses against the sealing plate 12, pushing the sealing plate 12 into the groove 11 a certain distance.

[0067] At this time, the upper surface of the coarse filter screen is tilted downwards towards the groove 11. The vibrator 10 is activated, causing the coarse filter screen to vibrate and shake off the contaminants on its upper surface into the groove 11. The contaminants enter the groove 11 and then fall into the receiving chamber 14. Since the upper surface of the coarse filter screen is tilted downwards towards the groove 11, the contaminants on its upper surface only fall into the groove 11 and will not fall back into the coarse filter chamber 1 during the cleaning process, causing secondary pollution.

[0068] After cleaning the coarse filter screen, the second power source can be controlled to reset, causing the coarse filter screen to reset as well. The coarse filter chamber 1 no longer presses against the sealing plate 12, and the sealing plate 12 resets under the action of the elastic element 13, resealing the groove 11 to prevent contaminated oil from entering the groove 11.

[0069] In a preferred embodiment of this invention, the coarse filter cleaning mechanism further includes a control button 15, a pressure sensor 16, and a pressure comparator. The pressure sensor 16 can be from Siemens, Weidmüller, Hydac, SMC, etc. The comparator in this invention can also be an analog comparator or a digital comparator, such as LM2903, MAX9022, TMP302, LTC1540, etc., as needed. A digital-to-analog converter (such as DAC8760, AD5758, DAC80508, etc.) or an analog-to-digital converter (such as ADS114S08, LTC2498, AD4003, etc.) can be electrically connected to the output of the pressure sensor 16 to meet signal transmission requirements.

[0070] The control button 15 is located (e.g., glued, welded, snapped, etc.) on the outer wall of the coarse filter chamber 1 or in the staff's monitoring room. The output end of the control button 15 is electrically connected to the start end of the pressure sensor 16 and the start end of the second power source.

[0071] The pressure comparator is installed (e.g., by bonding, welding, embedding, etc.) in a position where the sealing plate 12 can abut against the coarse filter screen, and the output terminal of the pressure comparator is electrically connected to the first input terminal of the pressure comparator.

[0072] The second input terminal of the pressure comparator is electrically connected to a pressure threshold memory (such as the 24CXX series, 93CXX series, etc.), and the output terminal of the pressure comparator is electrically connected to the stop terminal of the second power source and the start terminal of the vibrator 10.

[0073] A control button 15 is provided, which can be operated by staff as needed to activate the pressure sensor 16 and the second power source. When the coarse filter needs cleaning, the pressure sensor 16 and the second power source are activated, and the second power source causes the pressure sensor 16 and the second power source to swing.

[0074] Pressure sensor 16 collects the pressure signal of the coarse filter screen pressing against the sealing plate 12 and transmits it to the pressure comparator. The pressure comparator compares the collected pressure value with the pressure threshold in the pressure threshold memory. If the collected pressure value is greater than or equal to the pressure threshold, the pressure comparator outputs a control signal to the stop end of the second power source, indicating that the coarse filter screen has swung into position, that is, the upper surface of the coarse filter screen is tilted downward toward the groove 11.

[0075] At the same time, the pressure comparator outputs a control signal to the start end of the vibrator 10, starting the vibrator 10 and causing the coarse filter screen to vibrate and shake the contaminants on its upper surface into the groove 11.

[0076] Preferably, a reset button is provided. The reset button is also provided (e.g., glued, welded, snapped, etc.) on the outer wall of the coarse filtration chamber 1 or in the staff's monitoring room. The output end of the reset button is electrically connected to the reset control end of the second power source, and the second power source is controlled to rotate and then reset.

[0077] In a preferred embodiment of this utility model, in addition to the paint film-specific oil filter, an early warning module is also included. The early warning module includes an optical turbidity sensor 17 (such as Turbidity Sensor (KIT series), Grove-Turbidity Sensor, TSW-10M and TSW-20M, AQ3700 / AQ2020, TSS series, etc.), a turbidity comparator 18, and an alarm 19. The optical turbidity sensor 17 is installed at the outlet of the ion exchange resin chamber 3.

[0078] The first input terminal of the turbidity comparator 18 is electrically connected to the output terminal of the optical turbidity sensor 17, the second input terminal of the turbidity comparator 18 is electrically connected to a turbidity threshold memory, and the output terminal of the turbidity comparator 18 is electrically connected to the control terminal of the alarm 19.

[0079] The alarm 19 is installed (e.g., by bonding, welding, embedding, etc.) on the outer wall of the ion exchange resin chamber 3, or in the staff monitoring room. The alarm 19 can be a buzzer, piezoelectric speaker / electromagnetic speaker, LED light, etc., to emit audible and visual alarm signals.

[0080] Optical turbidity sensor 17 collects turbidity information of the oil at the outlet of ion exchange resin chamber 3 and transmits it to turbidity comparator 18. Turbidity comparator 18 compares the collected turbidity information value with the turbidity threshold value stored in the turbidity threshold memory. When the collected turbidity information value is greater than the turbidity threshold value, it indicates that the oil purification level is not up to standard.

[0081] At this time, the turbidity comparator 18 outputs a control signal to the control terminal of the alarm 19, which activates the alarm 19 and issues an alarm signal so that the staff can be informed of the message and check whether the equipment is malfunctioning and causing the oil purification to fail to meet the standard.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0083] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A special oil filter for removing paint film, characterized in that, Includes a coarse filtration chamber, an electrostatic filtration chamber, and an ion exchange resin chamber; The top of the coarse filter chamber is connected to an oil inlet pipe, and the bottom of the coarse filter chamber is connected to the bottom of the electrostatic chamber. An oil pump is installed at this connection point, and a horizontal coarse filter screen is installed inside the coarse filter chamber. The electrostatic chamber is equipped with a spiral-shaped central electrode and a cylindrical external electrode plate. The electrodes of the central electrode and the external electrode plate are opposite, and the external electrode plate is attached to the inner wall of the electrostatic chamber. The top of the ion exchange resin chamber is connected to the top of the electrostatic chamber. The ion exchange resin chamber is equipped with an ion exchange resin filter element, and the bottom of the ion exchange resin chamber has an outlet that connects to external equipment.

2. The paint film removal oil filter as described in claim 1, characterized in that, The bottom of the central electrode is connected to a first power source that controls its rotation.

3. The paint film removal oil filter as described in claim 1, characterized in that, The inner wall of the electrostatic chamber is funnel-shaped, and the central electrode is coaxial with the electrostatic chamber.

4. The paint film removal oil filter as described in claim 1, characterized in that, It also includes a coarse filter cleaning mechanism, which includes a rotating shaft, a vibrator, a groove, a sealing plate, an elastic element, and a receiving chamber; The rotating shaft is fixedly connected to one end of the coarse filter screen, and the rotating shaft is connected to a second power source that controls its rotation. The second power source is installed on the side wall of the coarse filter chamber. The vibrator is connected to the coarse filter screen, the groove is set on the side wall of the coarse filter chamber near the rotating shaft, and the sealing plate is slidably connected to the groove opening. The elastic element is disposed in the groove, with one end of the elastic element connected to the inner wall of the groove and the other end connected to the sealing plate; The receiving chamber is located below the groove and communicates with the bottom of the groove.

5. The paint film removal oil filter as described in claim 4, characterized in that, The coarse filter cleaning mechanism also includes control buttons, a pressure sensor, and a pressure comparator; The control button is located on the outer wall of the coarse filter or in the staff's monitoring room. The output of the control button is connected to the start-up terminal of the pressure sensor and the start-up terminal of the second power source. The pressure comparator is installed at a position where the sealing plate can abut against the coarse filter screen, and the output terminal of the pressure comparator is connected to the first input terminal of the pressure comparator. The second input terminal of the pressure comparator is connected to a pressure threshold memory, and the output terminal of the pressure comparator is connected to the stop terminal of the second power source and the start terminal of the vibrator.

6. The paint film removal oil filter as described in claim 1, characterized in that, It also includes an early warning module, which includes an optical turbidity sensor, a turbidity comparator and an alarm. The optical turbidity sensor is installed at the outlet of the ion exchange resin chamber. The first input terminal of the turbidity comparator is connected to the output terminal of the optical turbidity sensor, the second input terminal of the turbidity comparator is connected to a turbidity threshold memory, and the output terminal of the turbidity comparator is connected to the control terminal of the alarm. The alarm is installed on the outer wall of the ion exchange resin chamber or in the staff's monitoring room.

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