CN110025998B - Lubricating oil self-cleaning filter system - Google Patents
Lubricating oil self-cleaning filter system Download PDFInfo
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- CN110025998B CN110025998B CN201910348037.6A CN201910348037A CN110025998B CN 110025998 B CN110025998 B CN 110025998B CN 201910348037 A CN201910348037 A CN 201910348037A CN 110025998 B CN110025998 B CN 110025998B
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 91
- 238000004140 cleaning Methods 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 131
- 238000007789 sealing Methods 0.000 claims description 47
- 238000011010 flushing procedure Methods 0.000 claims description 29
- 239000010865 sewage Substances 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 21
- 239000012535 impurity Substances 0.000 claims description 10
- 238000011001 backwashing Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a lubricating oil self-cleaning filter system which consists of a body, a middle rotary valve arranged in the body, a speed reducing motor and a lubricating oil filter chamber arranged at the upper end of the body, a base arranged at the lower end of the body, a linkage valve arranged on the base, an oil return filter arranged on the linkage valve and a pneumatic system connected with the body and the oil return filter, wherein the middle rotary valve is arranged in the body; the lubricating oil self-cleaning filter system has the advantages of low failure rate, safety, reliability, simple structure and easy assembly operation and maintenance.
Description
Technical Field
The invention belongs to the field of lubricating oil filtering systems, and particularly relates to a lubricating oil self-cleaning filter system.
Background
The main lubricating oil filter is a full-automatic back-flushing filter, which is called as a self-cleaning filter for short, most of the back-flushing of the existing self-cleaning filter adopts a speed reducing motor to drive an intermediate valve to rotate to clean a filter element, the local area of the filter element is aligned to a sewage discharge channel, and the back-flushing is carried out by utilizing the instantaneous pressure difference between working pressure and atmosphere.
When the filter flow is larger, the filter area is larger, so that the filter element is also required to be large, the power of a speed reducing motor is required to be large, several kilowatts to dozens of kilowatts are generally required, the cost is greatly increased, once the motor is overloaded or has other electrical faults, the automatic backflushing function of the filter is failed, in addition, the integrated filter element is dirty and needs to be cleaned manually, the disassembly is extremely inconvenient, if the filter element is damaged a little, the whole group of filter elements needs to be replaced, and the later maintenance cost is greatly increased.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects in the prior art, and provides a novel full-automatic backwashing filter backwashing structure which does not cause pressure loss during backwashing, is reasonable in structure, convenient to install, economical to maintain and safe and reliable to use.
The technical scheme is as follows: the lubricating oil self-cleaning filter system comprises a body, a middle rotary valve arranged in the body, a speed reducing motor and a lubricating oil filter chamber arranged at the upper end of the body, a base arranged at the lower end of the body, a linkage valve arranged on the base, an oil return filter arranged on the linkage valve and a pneumatic system connected with the body and the oil return filter, wherein the speed reducing motor and the lubricating oil filter chamber are arranged on the upper end of the body;
the rotary valve comprises a body, a rotary valve mounting hole is formed in the center of the body, a middle rotary valve is mounted in the rotary valve mounting hole, an upper layer of cavity and a lower layer of cavity are formed in the rotary valve mounting hole, a plurality of independent cavities are formed in each layer of cavity, a square runner port is reserved on the side wall of the rotary valve mounting hole of each cavity and communicated with the cavities, the upper layer of cavity and the lower layer of cavity correspond to each other in a group, a lubricating oil filter element mounting hole is formed between the upper cavity and the lower cavity in each group of cavities, a lubricating oil filter chamber mounting hole is formed in the upper end of the upper cavity, a lubricating oil filter chamber is mounted on the lubricating oil filter chamber mounting hole, a lubricating oil filter element is arranged in the lubricating oil filter chamber, the lubricating oil filter element penetrates through the upper cavity and is mounted on the lubricating oil filter element mounting hole, an oil inlet pipeline is arranged on one side of the body and communicated with the upper cavity on the side wall of the central rotary valve mounting hole, and a speed reducing motor is mounted at the upper end of the body; a compressed air flow channel A is also arranged between the upper cavity and the lower cavity, the compressed air flow channel A is arranged between the upper square flow channel opening and the lower square flow channel opening and is an annular groove, and the upper side wall of the annular groove is provided with a vent hole;
the upper end of the middle rotary valve is connected with an output shaft of the speed reducing motor, the lower end of the middle rotary valve is a hollow blow-off pipe A, an upper sealing surface and a lower sealing surface which are parallel to each other are arranged on the blow-off pipe A, a compressed air flow channel B is arranged between the sealing surfaces, a flow channel sealing block is arranged on each sealing surface and seals a grid flow channel port of a cavity in the same group, the flow channel sealing block positioned on the upper sealing surface is communicated with the blow-off pipe and is marked as a flow channel sealing block A, and the flow channel sealing block below the sealing surfaces is communicated with the compressed air flow channel B and is marked as a flow channel sealing block B;
the linkage valve consists of a blow-down valve, a pneumatic actuator and a compressed air control valve, wherein the blow-down valve and the compressed air control valve are installed with the same pneumatic actuator, and the compressed air control valve is arranged in a pneumatic system;
the base is composed of an oil outlet pipe, a drain pipe B is arranged in the base, an oil outlet is arranged on the side wall of the oil outlet pipe, the oil outlet pipe is installed at the lower end of the body rotary valve installation hole, a drain pipe A at the lower end of the middle rotary valve is communicated with the drain pipe B, and the drain pipe B is communicated with the oil return filter through a drain valve in the linkage valve;
the pneumatic system is mounted on the oil return filter and the annular groove on the body.
Preferably, the oil return filter comprises a sewage cavity, an oil return filter chamber and an oil return filter element, an oil return pipeline is arranged at the bottom of the sewage cavity and connected with the oil return filter element, the oil return filter chamber is arranged outside the oil return filter element, and the filter chamber is fixed on the sewage cavity.
Preferably, an oil return pipeline of the oil return filter is connected with the lubricating oil circulation cabin, and the dirty oil cavity is further connected with a dirty oil pressure difference communicator on the dirty oil cavity through a pipeline and a stop valve.
Preferably, a lubricating oil pressure difference signal transmitter is further arranged between the oil inlet pipeline of the body and the oil outlet on the base, and the lubricating oil pressure difference signal transmitter is connected with the oil inlet pipeline and the oil outlet on the base sequentially through the pipeline and the stop valve.
Preferably, pneumatic system comprises air supply, air cleaner, check valve, stop valve, executor solenoid valve, relief pressure valve, air storage chamber, flushing solenoid valve and air supply pipeline, the air supply loops through the air supply pipeline and is connected with the sump oil chamber in air cleaner, check valve, stop valve, relief pressure valve, the flushing solenoid valve and the oil return filter, the air storage chamber passes through the air supply pipeline and flushes the air supply pipe connection between solenoid valve and the relief pressure valve, the executor solenoid valve passes through the air supply pipeline between air supply pipeline and relief pressure valve and the stop valve and is connected, the executor solenoid valve is connected with the pneumatic actuator in the linked valve.
Preferably, the air storage chamber is connected with the annular groove in the body through an air source pipeline, a compressed air control valve in the linkage valve is arranged on the air source pipeline between the air storage chamber and the annular groove, and a pressure gauge and a safety valve are arranged on the air storage chamber.
Preferably, the intermediate rotary valve is installed in the body, and the compressed air flow passage B is communicated with the compressed air flow passage a to form a complete compressed air flow passage.
Preferably, the lubricating oil filtering chamber is further provided with an exhaust system, the exhaust system is arranged in a cavity between the lubricating oil filtering chamber and the lubricating oil filtering core, and the side wall of the cavity is provided with an exhaust hole.
Preferably, a cam is mounted at the upper end of the middle rotary valve, and a travel switch is arranged beside the cam.
Has the advantages that: the invention utilizes compressed air to carry out back flushing, adopts a multi-cavity structure, wherein one cavity is spare, the other cavities work, and the filter seals the flushing cavity during back flushing, so that the back flushing cavity is separated from the other working cavities, thereby overcoming the defect that the outlet pressure is reduced during back flushing; in addition, a structure of linkage of the drain valve and the compressed air control valve is adopted during back washing, so that the drain valve and the compressed air flushing valve can be opened and closed simultaneously, and the structure is low in failure rate, safe, reliable, simple and easy to assemble, operate and maintain.
Drawings
FIG. 1 is a cross-sectional view of the overall construction of the invention;
FIG. 2 is a perspective view of the overall structure of the invention;
FIG. 3 is a structural view of the body;
FIG. 4 is a cross-sectional view of the body;
FIG. 5 is a perspective view of the intermediate rotary valve;
FIG. 6 is a view of the linkage valve structure;
1. body 11, rotary valve mounting hole 12, square runner port 13 filter core mounting hole 14, compressed air runner A15, lubricating oil differential pressure signal transmitter
2. The middle rotary valve 21, the sewage discharge pipe A22, the sealing surface 23, the flow channel sealing block A24, the flow channel sealing block B25 and the compressed air flow channel B
3. Speed reduction motor 31, travel switch 32, cam
4. Lubricating oil filter chamber 41, lubricating oil filter element 42 and exhaust system
5. Base 51, oil outlet pipe 52 and sewage discharge pipe B
6. Linkage valve 61, blowdown valve 62, pneumatic actuator 63 and compressed air control valve
7. Oil return filter 71, sump oil cavity 72, oil return filter chamber 73, oil return filter element 74, oil return pipeline 75 and sump oil differential pressure transmitter
8. The pneumatic system 81, the air filter 82, the check valve 83, the stop valve 84, the actuator solenoid valve 85, the pressure reducing valve 86, the air storage chamber 861, the pressure gauge 862, the safety valve 87, the flushing solenoid valve 88, the air source pipeline 89 and the air source.
Detailed Description
The technical scheme as shown in fig. 1 to 6 is as follows: the invention relates to a lubricating oil self-cleaning filter system which comprises a body 1, a middle rotary valve 2 arranged in the body 1, a speed reducing motor 3 and a lubricating oil filter chamber 4 which are arranged at the upper end of the body 1, a base 5 arranged at the lower end of the body 1, a linkage valve 6 arranged on the base 5, an oil return filter 7 arranged on the linkage valve 6 and a pneumatic system 8 connected with the body 1 and the oil return filter 7, wherein the speed reducing motor 3 and the lubricating oil filter chamber 4 are arranged on the upper end of the body 1;
a rotary valve mounting hole 11 is arranged at the center of the body 1, the middle rotary valve 2 is arranged in the rotary valve mounting hole 11, an upper layer cavity and a lower layer cavity are arranged in the rotary valve mounting hole 11, a plurality of independent chambers are arranged in each layer of cavity, a grid runner port 12 is reserved on the side wall of the rotary valve mounting hole 11 of each chamber, the grid runner port 12 is communicated with the chambers, the corresponding chambers are arranged in groups, the upper chamber and the lower chamber in each group of chambers are communicated with each other through the mounting hole 13 of the lubricating oil filter element 41, the upper end of the upper cavity is provided with a mounting hole of the lubricating oil filter chamber 4, the lubricating oil filter chamber 4 is mounted on the mounting hole of the lubricating oil filter chamber 4, a lubricating oil filter core 41 is arranged in the lubricating oil filter chamber 4, the lubricating oil filter element 41 penetrates through the upper cavity and is arranged on the mounting hole 13 of the lubricating oil filter element 41, an oil inlet pipeline is arranged on one side of the body 1 and is communicated with the upper cavity on the side wall of the central rotary valve mounting hole 11, and the speed reducing motor 3 is arranged at the upper end of the body 1; a compressed air flow passage A14 is also arranged between the upper cavity and the lower cavity, the compressed air flow passage A14 is arranged between the upper square runner opening 12 and the lower square runner opening 12 and is an annular groove, and the upper side wall of the annular groove is provided with a vent hole;
the upper end of the middle rotary valve 2 is connected with an output shaft of the speed reducing motor 3, the lower end of the middle rotary valve is a hollow sewage discharge pipe A21, an upper sealing surface 22 and a lower sealing surface 22 which are parallel to each other are arranged on the sewage discharge pipe A21, a compressed air flow channel B25 is arranged between the sealing surfaces 22, a flow channel sealing block is arranged on each sealing surface 22, the flow channel sealing block seals a grid flow channel port 12 of a cavity in the same group, the flow channel sealing block positioned on the upper sealing surface 22 is communicated with the sewage discharge pipe A21 and is marked as a flow channel sealing block A23, and the flow channel sealing block below the sealing surface 22 is communicated with a compressed air flow channel B25 and is marked as a flow channel sealing block B24;
the linkage valve 6 consists of a blow-down valve 61, a pneumatic actuator 62 and a compressed air control valve 63, the blow-down valve 61 and the compressed air control valve 63 are mounted with the same pneumatic actuator 62, and the compressed air control valve 63 is arranged in the pneumatic system 8; the blowoff valve 61 is a butterfly valve, and the compressed air control valve 63 is a ball valve.
The base 5 consists of an oil outlet pipe 51, a sewage discharge pipe B52 is arranged in the base, an oil outlet is arranged on the side wall of the oil outlet pipe 51, the oil outlet pipe 51 is arranged at the lower end of the rotary valve mounting hole 11 of the body 1, a sewage discharge pipe A21 at the lower end of the intermediate rotary valve 2 is communicated with a sewage discharge pipe B52, and the sewage discharge pipe B52 is communicated with the oil return filter 7 through a sewage discharge valve 61 in the linkage valve 6;
the pneumatic system 8 is mounted on the return oil filter 7 and the annular groove vent hole on the body 1.
In this example, the oil return filter 7 is composed of a dirty oil cavity 71, an oil return filter chamber 72 and an oil return filter element 73, an oil return pipeline 74 is arranged at the bottom of the dirty oil cavity 71, the oil return pipeline 74 is connected with the oil return filter element 73, the oil return filter chamber 72 is arranged outside the oil return filter element 73, and the filter chamber is fixed on the dirty oil cavity 71.
In this example, the oil return pipe 74 of the oil return filter 7 is connected to the oil circulation chamber, and the dirty oil chamber 71 is further connected to the dirty oil pressure difference transmitter 75 on the dirty oil chamber through a pipe and a stop valve 83.
In this example, 8 groups of chambers are arranged in the body 1, wherein 7 groups of chambers work, that is, 7 common lubricating oil filter chambers 4, and 1 group of chambers is standby, that is, 1 standby lubricating oil filter chamber 4, the upper sealing surface 22 on the intermediate rotary valve 2 is provided with 1 flow channel closing block a23, the lower part of the sealing surface 22 on the intermediate rotary valve 2 is provided with 1 flow channel closing block B24, the flow channel closing block a23 closes the upper grid flow channel port 12 of the chambers in the same group, and the flow channel closing block B24 closes the lower grid flow channel port 12 of the chambers in the same group;
in this example, a lubricant pressure difference signaling device 15 is further disposed between the oil inlet pipeline of the body 1 and the oil outlet on the base 5, and the lubricant pressure difference signaling device 15 is connected to the oil inlet pipeline and the oil outlet on the base 5 sequentially through the pipeline and the stop valve 83.
In this example, the pneumatic system 8 is composed of an air source 89, an air filter 81, a one-way valve 82, a stop valve 83, an actuator solenoid valve 84, a pressure reducing valve 85, an air storage chamber 86, a flushing solenoid valve 87 and an air source 89 pipeline 88, the air source 89 is connected with the dirty oil cavity 71 in the oil return filter 7 sequentially through the air source 89 pipeline 88, the air filter 81, the one-way valve 82, the stop valve 83, the pressure reducing valve 85 and the flushing solenoid valve 87, the air storage chamber 86 is connected with the air source 89 pipeline 88 between the flushing solenoid valve 87 and the pressure reducing valve 85 through the air source 89 pipeline 88, the actuator solenoid valve 84 is connected with the air source 89 pipeline 88 between the pressure reducing valve 85 and the stop valve 83 through the air source 89 pipeline 88, and the actuator solenoid valve 84 is connected with the pneumatic actuator 62 in the linkage valve 6.
In this example, the air storage chamber 86 is connected with the annular groove in the body 1 through an air source 89 pipeline 88, a compressed air control valve 63 in the linkage valve 6 is arranged on the air source 89 pipeline 88 between the air storage chamber 86 and the annular groove, and a pressure gauge 861 and a safety valve 862 are arranged on the air storage chamber 86.
In this example, the intermediate rotary valve 2 is installed in the body 1, and the compressed air flow passage B25 communicates with the compressed air flow passage a14 to form a complete compressed air flow passage.
In this example, the lubricating oil filter chamber 4 is further provided with an exhaust system 42, the exhaust system 42 is installed in a cavity between the lubricating oil filter chamber 4 and the lubricating oil filter element 41, and the side wall of the cavity is provided with an exhaust hole which is connected with a drain pipe B52 through an exhaust pipeline.
In this example, a cam 32 is mounted on the upper end of the intermediate rotary valve 2, and a travel switch 31 is arranged beside the cam 32.
And (3) normal state: lubricating oil flows into the body 1 from an inlet pipeline, passes through the upper sealing surface 22 of the intermediate rotary valve 2 to the position of a lubricating oil filter element 41, flows into a lower cavity from an upper cavity in the body 1, retains impurities in the lubricating oil filter element 41 at the positions of the upper sealing surface 22 of the intermediate rotary valve 2 and the upper cavity of the body 1, and flows into the base 5 through the lower cavity of the body 1 and is discharged through an oil outlet;
since the flushing solenoid valve 87 and the actuator solenoid valve 84 are in a closed state, at this time, the compressed air is divided into three paths and is respectively supplied to the flushing solenoid valve 87, the actuator solenoid valve 84 and the air storage chamber 86;
compressed air supplied to the flushing solenoid valve 87: the compressed air passes through an air filter 81, a one-way valve 82, a stop valve 83, a pressure reducing valve 85 and reaches a flushing electromagnetic valve 87;
compressed air supplied to the air reservoir 86: the compressed air passes through an air filter 81, a one-way valve 82, a stop valve 83 and a pressure reducing valve 85 until reaching the air storage chamber 86, and when the air pressure in the air storage chamber 86 exceeds 0.4Mpa, a safety valve 862 on the air storage chamber 86 is automatically opened to release the pressure;
compressed air supplied to the actuator solenoid valve 84: compressed air passes through an air filter 81, a one-way valve 82 and a stop valve 83 to an actuator electromagnetic valve 84, the actuator electromagnetic valve 84 does not work, a blowdown valve 61 and a compressed air control valve 63 are in a closed state, and at the moment, the compressed air is gathered in an air storage chamber and is ready for back flushing at any time;
backwashing:
along with the increase of the working time of the filter, more and more impurities retained on the lubricating oil filter element 41 generate increasing pressure difference between the inlet and the outlet of the lubricating oil filter, and when the pressure difference reaches a certain specific value, the lubricating oil pressure difference signal transmitter 15 sends a signal to trigger an electric system to start a cleaning cycle;
when the cleaning period begins, the speed reducing motor 3 is switched on to control the intermediate rotary valve 2 to be switched from the standby lubricating oil filtering chamber 4 to the common lubricating oil filtering chamber 4 to be washed, the clean filter core in the standby lubricating oil filtering chamber 4 participates in filtering, so that the pressure difference is reduced immediately, the intermediate rotary valve 2 stops acting once being switched to the filtering chamber to be washed through the action of the cam 32 and the travel switch 31, the actuator electromagnetic valve 84 works, the blow-down valve 61 and the compressed air control valve 63 rotate 90 degrees simultaneously, the blow-down valve 61 and the compressed air control valve 63 are opened simultaneously, the compressed air in the air storage chamber 86 passes through the compressed air control valve 63 and enters the compressed air flow passage of the body 1, the compressed air is introduced to the square grid flow passage port 12 through the flow passage sealing block B24, the lubricating oil filter core 41 in the chamber to be washed is washed in a reverse direction, and the compressed air prompts the liquid in the lubricating oil filtering chamber 4 to flow through the lubricating oil filter core 41 in the reverse direction, washing away impurities bonded on the lubricating oil filter element 41, so that the impurities enter a dirty oil cavity 71 of the oil return filter through a flow passage closing block A23, a drain pipe A21, a drain pipe B52 and a drain valve 61; after the back flushing in a short time, the electromagnetic valve 84 of the actuator is powered off, the drain valve 61 and the compressed air control valve 63 are closed at the same time, and the air in the lubricating oil filter chamber 4 is discharged into a drain outlet in the base 5 through the exhaust system 42;
the washed oil liquid containing impurities enters an oil return filter chamber 72 from a dirty oil cavity 71 in the oil return filter 7, the clean oil which is subjected to secondary treatment by an oil return filter element 73 is discharged from an oil return pipeline 74, and the discharged oil liquid can be directly connected to a lubricating oil circulation cabin;
in the whole dirty oil treatment process, the flushing solenoid valve 87 is electrified to send compressed air for a certain time, the compressed air is reversely pressed into the oil return filter chamber 72 and filtered by the oil return filter element 73, the dirty oil pressure difference signal transmitter 75 on the dirty oil cavity 71 is displayed in red to show the resistance of the oil return filter element 73 and the oil return pipeline 74, and only after the compressed air controlled by the flushing solenoid valve 87 is purged, the dirty oil pressure difference signal transmitter 75 displays white, so that the next cleaning period can be carried out.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. A lubricating oil self-cleaning filter system is characterized in that: the lubricating oil self-cleaning filter system consists of a body, a middle rotary valve arranged in the body, a speed reducing motor and a lubricating oil filter chamber arranged at the upper end of the body, a base arranged at the lower end of the body, a linkage valve arranged on the base, an oil return filter arranged on the linkage valve and a pneumatic system connected with the body and the oil return filter;
the rotary valve comprises a body, a rotary valve mounting hole is formed in the center of the body, a middle rotary valve is mounted in the rotary valve mounting hole, an upper layer of cavity and a lower layer of cavity are formed in the rotary valve mounting hole, a plurality of independent cavities are formed in each layer of cavity, a square runner port is reserved on the side wall of the rotary valve mounting hole of each cavity and communicated with the cavities, the upper layer of cavity and the lower layer of cavity correspond to each other in a group, a lubricating oil filter element mounting hole is formed between the upper cavity and the lower cavity in each group of cavities, a lubricating oil filter chamber mounting hole is formed in the upper end of the upper cavity, a lubricating oil filter chamber is mounted on the lubricating oil filter chamber mounting hole, a lubricating oil filter element is arranged in the lubricating oil filter chamber, the lubricating oil filter element penetrates through the upper cavity and is mounted on the lubricating oil filter element mounting hole, an oil inlet pipeline is arranged on one side of the body and communicated with the upper cavity on the side wall of the central rotary valve mounting hole, and a speed reducing motor is mounted at the upper end of the body; a compressed air flow channel A is also arranged between the upper cavity and the lower cavity, the compressed air flow channel A is arranged between the upper square flow channel opening and the lower square flow channel opening and is an annular groove, and the upper side wall of the annular groove is provided with a vent hole;
the upper end of the middle rotary valve is connected with an output shaft of the speed reducing motor, the lower end of the middle rotary valve is a hollow blow-off pipe A, an upper sealing surface and a lower sealing surface which are parallel to each other are arranged on the blow-off pipe A, a compressed air flow channel B is arranged between the sealing surfaces, at least one flow channel sealing block is arranged on the sealing surfaces, the flow channel sealing blocks seal grid flow channel openings of chambers in the same group, the flow channel sealing block positioned on the upper sealing surface is communicated with the blow-off pipe and is marked as a flow channel sealing block A, and the flow channel sealing block below the sealing surfaces is communicated with the compressed air flow channel B and is marked as a flow channel sealing block B;
the linkage valve consists of a blow-down valve, a pneumatic actuator and a compressed air control valve, wherein the blow-down valve and the compressed air control valve are installed with the same pneumatic actuator, and the compressed air control valve is arranged in a pneumatic system;
the base is composed of an oil outlet pipe, a drain pipe B is arranged in the base, an oil outlet is arranged on the side wall of the oil outlet pipe, the oil outlet pipe is installed at the lower end of the body rotary valve installation hole, a drain pipe A at the lower end of the middle rotary valve is communicated with the drain pipe B, and the drain pipe B is communicated with the oil return filter through a drain valve in the linkage valve;
the pneumatic system is arranged on the oil return filter and the annular groove on the body;
the oil return filter is composed of a sewage cavity, an oil return filter chamber and an oil return filter element, wherein an oil return pipeline is arranged at the bottom of the sewage cavity and connected with the oil return filter element, the oil return filter chamber is arranged outside the oil return filter element, and the filter chamber is fixed on the sewage cavity;
an oil return pipeline of the oil return filter is connected with the lubricating oil circulation cabin, and the sewage cavity is also connected with a sewage oil pressure difference communicator on the sewage cavity through a pipeline and a stop valve;
a lubricating oil pressure difference signal transmitter is further arranged between the oil inlet pipeline of the body and the oil outlet on the base, and the lubricating oil pressure difference signal transmitter is connected with the oil inlet pipeline and the oil outlet on the base sequentially through the pipeline and the stop valve;
the pneumatic system consists of an air source, an air filter, a one-way valve, a stop valve, an actuator electromagnetic valve, a pressure reducing valve, an air storage chamber, a flushing electromagnetic valve and an air source pipeline, wherein the air source is connected with a sump oil cavity in the oil return filter sequentially through the air source pipeline;
the air storage chamber is connected with the annular groove in the body through an air source pipeline, a compressed air control valve in the linkage valve is arranged on the air source pipeline between the air storage chamber and the annular groove, and a pressure gauge and a safety valve are arranged on the air storage chamber;
the middle rotary valve is arranged in the body, and the compressed air flow passage B is communicated with the compressed air flow passage A to form a complete compressed air flow passage;
the lubricating oil filtering chamber is also provided with an exhaust system, the exhaust system is arranged in a cavity between the lubricating oil filtering chamber and the lubricating oil filter element, and the side wall of the cavity is provided with an exhaust hole;
the upper end of the middle rotary valve is provided with a cam, and a travel switch is arranged beside the cam;
and (3) normal state: the lubricating oil flows into the body from the inlet pipeline, passes through the upper sealing surface of the intermediate rotary valve to the position of the lubricating oil filter element, flows into the lower cavity from the upper cavity in the body, retains impurities in the lubricating oil filter element at the positions of the upper sealing surface of the intermediate rotary valve and the upper cavity of the body, flows into the base through the lower cavity of the body and is discharged through the oil outlet;
because the flushing electromagnetic valve and the actuator electromagnetic valve are in a closed state, compressed air is divided into three paths and is respectively supplied to the flushing electromagnetic valve, the actuator electromagnetic valve and the air storage chamber;
compressed air supplied to the flush solenoid valve: the compressed air passes through an air filter, a one-way valve, a stop valve and a pressure reducing valve until reaching a flushing electromagnetic valve;
compressed air supplied to the air reservoir: the compressed air passes through an air filter, a one-way valve, a stop valve and a pressure reducing valve to reach the air storage chamber, and when the air pressure in the air storage chamber exceeds 0.4Mpa, a safety valve on the air storage chamber is automatically opened to release the pressure;
compressed air supplied to the actuator solenoid valve: compressed air passes through the air filter, the one-way valve, the stop valve and the actuator electromagnetic valve, the actuator electromagnetic valve does not work, the blow-down valve and the compressed air control valve are in a closed state, and at the moment, the compressed air is gathered in the air storage chamber and is ready for back washing at any time;
backwashing:
along with the increase of the working time of the filter, more and more impurities retained on the lubricating oil filter element generate continuously increased pressure difference between the inlet and the outlet of the lubricating oil filter, and when the pressure difference reaches a certain specific value, the lubricating oil pressure difference signal transmitter sends a signal to trigger an electrical system to start a cleaning cycle;
when the cleaning period begins, the speed reducing motor is connected to control the intermediate rotary valve to be switched from the spare lubricating oil filtering chamber to the common lubricating oil filtering chamber to be cleaned, the clean filter element in the spare lubricating oil filtering chamber takes part in filtering to cause the pressure difference to drop immediately, the intermediate rotary valve stops working once being switched to the filtering chamber to be cleaned under the action of the cam and the travel switch, the electromagnetic valve of the actuator works, the blow-down valve and the compressed air control valve rotate simultaneously to open the blow-down valve and the compressed air control valve simultaneously, the compressed air in the air storage chamber passes through the compressed air control valve to enter the compressed air flow passage of the body, the compressed air is introduced to the grid flow passage port through the flow passage sealing block B to reversely clean the lubricating oil filtering element in the chamber to be cleaned, the compressed air promotes the liquid in the lubricating oil filtering chamber to reversely flow through the lubricating oil filtering element to clean the impurities adhered to the lubricating oil filtering element, and the impurities are cleaned through the flow passage sealing block A, The sewage discharge pipe A, the sewage discharge pipe B and the sewage discharge valve enter a sewage oil cavity of the oil return filter; after the back washing in a short time, the electromagnetic valve of the actuator is powered off, the drain valve and the compressed air control valve are closed at the same time, and the air in the lubricating oil filter chamber is discharged into a drain outlet in the base through an exhaust system;
the washed oil containing impurities enters an oil return filter chamber from a dirty oil cavity in an oil return filter, clean oil subjected to secondary treatment by an oil return filter element is discharged from an oil return pipeline, and the discharged oil is directly connected to a lubricating oil circulation cabin;
in the whole dirty oil treatment process, the flushing solenoid valve is electrified to send compressed air for a certain time, the compressed air reversely enters the oil return filter chamber and is filtered by the oil return filter element, the dirty oil pressure difference signal transmitter on the dirty oil cavity displays red to show the resistance of the oil return filter element and the oil return pipeline, and the dirty oil pressure difference signal transmitter displays white only after the compressed air controlled by the flushing solenoid valve is swept, so that the next cleaning period can be carried out.
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| CN111760344A (en) * | 2020-07-06 | 2020-10-13 | 南通航海机械集团有限公司 | Novel large-flow high-precision fuel oil self-cleaning filter |
| CN113413660B (en) * | 2021-06-18 | 2022-11-15 | 湖北恒通石化设备有限公司 | Oil separation filter equipment and filtration system thereof |
| CN114288853B (en) * | 2022-02-11 | 2024-05-14 | 重庆鲍斯净化设备科技有限公司 | Compressed air deoiling and purifying system |
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| CN1210025A (en) * | 1997-08-09 | 1999-03-10 | 博尔和柯基滤清器有限责任公司 | Reversible flow filter |
| CN201186186Y (en) * | 2008-01-30 | 2009-01-28 | 南通航海机械有限公司 | Full automatic backwashing filter |
| CN202052415U (en) * | 2011-04-26 | 2011-11-30 | 上海艾科液压技术有限公司 | Back washing filter system for emulsion |
| CN106731132A (en) * | 2016-12-24 | 2017-05-31 | 浙江交通职业技术学院 | Lubricating oil Full automatic backwashing filter peculiar to vessel |
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| CN1210025A (en) * | 1997-08-09 | 1999-03-10 | 博尔和柯基滤清器有限责任公司 | Reversible flow filter |
| CN201186186Y (en) * | 2008-01-30 | 2009-01-28 | 南通航海机械有限公司 | Full automatic backwashing filter |
| CN202052415U (en) * | 2011-04-26 | 2011-11-30 | 上海艾科液压技术有限公司 | Back washing filter system for emulsion |
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