CN207913331U - Self-cleaning fuel oil filter with redundant filter - Google Patents

Abstract

The utility model discloses the self-cleaning fuel oil filters with redundant filter, including set there are one dress switching valve valve chamber and two dress filter core filter chamber from secondary cleaner ontology, inlet channel and drain outlet are set from secondary cleaner ontology；Backwash cavity and the air holes communicated therewith and two upper stomatas are set in switching valve, switching valve forms oil inlet cavity with valve chamber inner wall, blowdown chamber and fuel-displaced cavity, switching valve is every time after commutation, oil inlet cavity only communicates the rear oil inlet passage that preceding oil inlet passage is communicated with a filter chamber, the rear oil discharge passage that preceding oil discharge passage is communicated with the filter chamber is only connected by fuel-displaced cavity, one upper stomata is communicated with inlet channel, port sealing on another, the rear oil discharge passage that air holes is only communicated with another filter chamber is connected, blowdown cavity is communicated with drain outlet and the rear oil inlet passage that is communicated with the filter chamber simultaneously；Bypass filter assemblies are filled from secondary cleaner ontology front end.The utility model has the advantages that less energy consumption, cleaning efficiency are high and cleaning performance is good.

Description

Self-cleaning fuel oil filter with redundant filter

Technical field

The utility model is related to fuel filter equipment technical fields, and in particular to the self-cleaning type fuel filter with redundant filter Device.

Background technology

Currently, the filtering for fuel oil, existing regular fuel filter does not have automatic cleaning function.Work as fuel filter Device worked after a period of time, when filter core is blocked by the impurity particle in fluid and influences filter effect, needed to fuel oil filter Filter core cleaned；Currently used filter element cleaning method is：First arrestment work, then by filter core from oil screen Take out cleaning, reloaded in fuel oil filter again after the completion of to be cleaned, this cleaning way not only high energy consumption, seriously affect The work continuity of system, and the cleaning efficiency manually cleared up is low and cleaning performance is poor.Because then there is an urgent need for invent one kind can With less energy consumption, the online intermittent automatic cleaning filter core of energy, the fuel oil filter that cleaning efficiency is high and cleaning performance is good.

Utility model content

The purpose of this utility model be to provide a kind of less energy consumption, can online intermittent automatic cleaning filter core, cleaning efficiency it is high And the good self-cleaning fuel oil filter with redundant filter of cleaning performance.

To achieve the above object, the utility model uses following technical solution：The self-cleaning type with redundant filter Fuel oil filter, including from secondary cleaner ontology, from the top of secondary cleaner ontology front side wall is provided with oil inlet, lower part is provided with Oil outlet, the top of secondary cleaner ontology rear wall is provided with back flushing air import, lower part is provided with sewage backwash mouth, anti- Qi of chong channel ascending adversely entrance be provided with to blown to back flushing air import high pressure gas gas bag backwash component, from secondary cleaner ontology by preceding It is set gradually after there are one the independent filter chamber side by side of valve chamber and two or so, the inside of each filter chamber is separated into upper filter by partition board Chamber and lower filter chamber, are respectively arranged with the through-hole of filter chamber and lower filter chamber in several connections, in each filter on the partition board of each filter chamber The through hole of partition board is separately installed with the filter core in corresponding upper filter chamber in chamber, from the upper filter chamber difference of each of secondary cleaner ontology It is connected with valve chamber upper space by oil inlet passage after one, valve chamber upper space is connected by preceding oil inlet passage with oil inlet It is logical, from secondary cleaner ontology each of time filter chamber respectively by one after oil discharge passage be connected with valve chamber lower space, under valve chamber Portion space is connected by preceding oil discharge passage with oil outlet respectively, between two filter chambers from secondary cleaner ontology from top to bottom It is disposed with to be connected to back flushing air import with the inlet channel of valve chamber upper space and to be connected to sewage backwash mouth With the drain outlet of valve chamber lower space；Movable sealing is provided in valve chamber drives turning for rotation commutation by Pneumatic motor assembly Valve is changed, central axial in switching valve is provided with backwash cavity, and radially there are two same for setting in the upper portion side wall of switching valve When with the upper stomata that communicates of backwash cavity, go up stomata energy alternate communication inlet channel for two when switching valve commutate, converting Oil inlet notch is provided on the side side wall on valve top, oil inlet notch forms independent oil inlet cavity with valve chamber inner wall, converting Be provided with blowdown notch on the other side side wall on valve top, blowdown notch forms independent blowdown chamber with valve chamber inner wall, with Fuel-displaced notch is provided on the switching valve lower sides of oil inlet notch homonymy, fuel-displaced notch forms independent fuel-displaced with valve chamber inner wall Cavity, be provided on the switching valve lower sides of blowdown notch homonymy can be with the air holes that be connected of backwash cavity, institute Switching valve is stated every time by after Pneumatic motor assembly driving commutation, and oil inlet cavity is just only corresponding with a filter chamber by preceding oil inlet passage The rear oil inlet passage communicated is connected, fuel-displaced cavity is just only by the preceding oil discharge passage rear oil discharge passage communicated corresponding with the filter chamber Be connected, at the same a upper stomata be just only connected to each other with inlet channel be connected to, on another stomata just by valve chamber inner wall institute Sealing, and just only the rear oil discharge passage communicated corresponding with another filter chamber is connected to each other connection, blowdown cavity just to air holes It is connected simultaneously with drain outlet and the rear oil inlet passage that is communicated with the filter chamber；It is being also equipped with side from the front end of secondary cleaner ontology Logical filter assemblies.

Further, the self-cleaning fuel oil filter above-mentioned with redundant filter, wherein：Bypass the structure of filter assemblies For：Including by-pass filter ontology, it is provided with bypass filter chamber and bypass valve chamber from front to back in by-pass filter ontology, bypasses valve chamber The bypassed partition board in inside separate bypass filter chamber and lower bypass filter chamber in phase, be provided in connection up and down and bypass on bypass partition board The through-hole of filter chamber and lower bypass filter chamber is equipped with the bypass filter core in upper bypass filter chamber, in by-pass filter sheet in through hole The right side wall top of body is provided with first charging aperture, lower part is provided with the first discharge port, on the rear wall of by-pass filter ontology Portion is provided with to be connected to each other the second charging aperture being connected to the oil inlet from secondary cleaner ontology, lower part is provided with to clear with oneself The oil outlet of filter body is connected to each other the second discharge port of connection, is provided with to be connected to the first charging in by-pass filter ontology Mouthful and bypass valve chamber upper space the first feeding-passage, to be connected to second charging aperture with bypass valve chamber upper space second Feeding-passage, to be connected to upper bypass filter chamber with the third feeding-passage of bypass valve chamber upper space, being connected to the first discharging Mouthful with bypass valve chamber lower space the first tapping channel, to be connected to the second discharge port with bypass valve chamber lower space second Tapping channel and to be connected to it is lower bypass filter chamber with bypass valve chamber lower space third tapping channel；In bypassing valve chamber It is provided with the bypass switching valve for driving rotation commutation by driving mechanism, the top of bypass switching valve is provided with perforation bypass conversion The upper bypass cavity of valve, lower part are provided with the lower bypass cavity of perforation bypass switching valve, bypass each driven-mechanism of switching valve After driving commutation, the first feeding-passage on by-pass filter ontology can be made to pass through upper bypass cavity and be only connected with the second feeding-passage Logical and the first tapping channel is only connected with the second tapping channel by lower bypass cavity or the first feeding-passage only passes through Upper bypass valve chamber is connected with third feeding-passage and the first tapping channel passes through lower bypass valve chamber and third tapping channel phase Connection.

Further, the self-cleaning fuel oil filter above-mentioned with redundant filter, wherein：In the side of by-pass filter ontology It is additionally provided with to bypass the pressure for making to balance from the internal pressure of secondary cleaner ontology and by-pass filter ontology when switching valve commutation Thrust balancing device.

Further, the self-cleaning fuel oil filter above-mentioned with redundant filter, wherein：It is also set on by-pass filter ontology It is equipped with the heating device that can be heated to the medium for entering by-pass filter ontology.

Further, the self-cleaning fuel oil filter above-mentioned with redundant filter, wherein：It is arranged from secondary cleaner ontology There is to detect the pressure difference alarm of pressure difference between oil inlet and outlet, pressure difference alarm connects with Pneumatic motor assembly signal Connect, Pneumatic motor assembly and gas bag backwash component signals are connect, when pressure difference alarm detect to obtain oil inlet and outlet it Between pressure difference when being more than default safe pressure differential, pressure difference alarm can send alarm signal, Pneumatic motor assembly to Pneumatic motor assembly Switching valve commutation can be controlled after receiving alarm signal, and after switching valve commutates in place, Pneumatic motor assembly, which can control, to stop Only switching valve and to gas bag backwash component send backwash signal, gas bag backwash component receive backwash signal after meeting At preset timed intervals high pressure gas is blown to back flushing air import.

Further, the self-cleaning fuel oil filter above-mentioned with redundant filter, wherein：It includes gas that gas bag, which backwashes component, Packet and the recoil valve of control gas bag opening and closing；Pneumatic motor assembly includes：It is fixedly and coaxially connected with switching valve and upper end is stretched out upwards From the shaft of secondary cleaner ontology, to drive shaft rotation air motor, to control air motor and with pressure difference alarm The solenoid valve of signal connection, the cam that is set to shaft upper shaft and be set to from secondary cleaner bodies top can be with Cam matching merges the limit switch being connect with recoil valve and solenoid signal；When solenoid valve receives the transmission of pressure difference alarm Switching valve commutation can be controlled after alarm signal, and after switching valve commutates in place, the cam on shaft axle body can touch limit Switch, limit switch can be sent after mutually being touched with cam to solenoid valve to commutate signal in place and sends backwash letter to recoil valve Number, solenoid valve receives commutation can stop switching valve after signal in place, and recoil valve can open gas bag after receiving backwash signal Certain time realizes recoil cleaning.

Further, the self-cleaning fuel oil filter above-mentioned with redundant filter, wherein：It is arranged at sewage backwash mouth There is blowdown valve.

Through the implementation of the above technical solution, the utility model has the beneficial effects that：It is easy for operation, less energy consumption, energy Online intermittent automatic cleaning filter core, cleaning efficiency are high and cleaning performance is good.

Description of the drawings

Fig. 1 is the structural schematic diagram of the self-cleaning fuel oil filter described in the utility model with redundant filter.

Fig. 2 is the structural schematic diagram of the overlook direction of Fig. 1.

Fig. 3 is the structural schematic diagram of the right apparent direction of Fig. 1.

Fig. 4 is the enlarged diagram at the positions H shown in Fig. 3.

Fig. 5 is the structural schematic diagram of B-B sections shown in Fig. 1.

Fig. 6 is the structural schematic diagram from secondary cleaner ontology shown in Fig. 1.

Fig. 7 is the structural schematic diagram of A-A sections shown in Fig. 6.

Fig. 8 is the structural schematic diagram of filter core shown in Fig. 1.

Fig. 9 is the dimensional structure diagram of Fig. 8.

Figure 10 is the structural schematic diagram of E-E sections shown in fig. 8.

Figure 11 is shown in Fig. 1 from the position relationship schematic diagram in secondary cleaner ontology between valve chamber and each filter chamber.

Figure 12 is the structural schematic diagram of C-C sections shown in Figure 11.

Figure 13 is the structural schematic diagram of J-J sections shown in Figure 11.

Figure 14 is the structural schematic diagram of Q-Q sections shown in Figure 11.

Figure 15 is the structural schematic diagram of M-M sections shown in Figure 11.

Figure 16 is the structural schematic diagram that filter assemblies are bypassed shown in Fig. 1.

Figure 17 is the structural schematic diagram in the left view direction of Figure 16.

Figure 18 is the structural schematic diagram of the overlook direction of Figure 16.

Figure 19 is the structural schematic diagram of D-D sections shown in Figure 18.

Figure 20 is the structural schematic diagram of F-F sections shown in Figure 18.

Specific implementation mode

The utility model is described in further detail in the following with reference to the drawings and specific embodiments.

As shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Tu15Suo Show, the self-cleaning fuel oil filter with redundant filter, including from secondary cleaner ontology 1, from 1 front side wall of secondary cleaner ontology Top be provided with oil inlet 2, lower part is provided with oil outlet 3, the top of 1 rear wall of secondary cleaner ontology is being provided with back flushing air Import 4, lower part are provided with sewage backwash mouth 5, are provided at back flushing air import 4 to blow high pressure gas to back flushing air import 4 Gas bag backwash component 6, it is independent setting gradually that there are one valve chamber 7 and two or so from front to back from secondary cleaner ontology 1 Left filter chamber 8 side by side and right filter chamber 9, the inside of left filter chamber 8 are separated into upper left filter chamber 81 and lower-left filter chamber 82 by first partition 10, The first through hole 11 of several connection upper left filter chambers 81 and lower-left filter chamber 82 is respectively arranged in first partition 10, in first through hole The first filter core 12 in upper left filter chamber 81 is separately installed at 11, upper left filter chamber 81 is respectively by being set to from secondary cleaner sheet Left back oil inlet passage 13 in body 1 is connected with 7 upper space of valve chamber, and 7 upper space of valve chamber is by being set to from secondary cleaner sheet Preceding oil inlet passage 14 in body 1 is connected with oil inlet 2, lower-left filter chamber 82 by be set to from secondary cleaner ontology 1 it is left back go out Oily channel 15 is connected with 7 lower space of valve chamber, and 7 lower space of valve chamber is fuel-displaced logical from before secondary cleaner ontology 1 by being set to Road 16 is connected with oil outlet 3；The inside of right filter chamber 9 is separated into upper right filter chamber 91 and bottom right filter chamber 92 by second partition 17, The second through-hole 18 of several connection upper right filter chambers 91 and bottom right filter chamber 92 is respectively arranged on second partition 17, in the second through-hole 18 Place is separately installed with the second filter core 19 in upper right filter chamber 91, and upper right filter chamber 91 is respectively by being set to from secondary cleaner ontology Oil inlet passage 20 is connected with 7 upper space of valve chamber behind the right side in 1, and bottom right filter chamber 92 is by being set to from secondary cleaner ontology 1 Oil discharge passage 21 is connected with 7 lower space of valve chamber behind the right side；

Being disposed with from top to bottom from secondary cleaner ontology 1 between left filter chamber 8 and right filter chamber 9 is connected to recoil Gas import 4 is with the inlet channel 22 of 7 upper space of valve chamber and to be connected to sewage backwash mouth 5 and 7 lower space of valve chamber Drain outlet 23；Movable sealing is provided with the switching valve 25 that rotation commutation is driven by Pneumatic motor assembly 24 in valve chamber 7, is turning It changes the central axial of valve 25 and is provided with backwash cavity 251, radially there are two simultaneously for setting in the upper portion side wall of switching valve 25 Stomata 253 on stomata 252 and second on first communicated with backwash cavity 251, when switching valve commutates first on stomata 252 With 253 energy alternate communication inlet channel 22 of stomata on second, oil inlet notch is provided on the side side wall on 25 top of switching valve 254, oil inlet notch 254 forms independent oil inlet cavity 26 with 7 inner wall of valve chamber, is set on the other side side wall on 25 top of switching valve It is equipped with blowdown notch 255, blowdown notch 255 forms independent blowdown chamber 27 with 7 inner wall of valve chamber, same with oil inlet notch 254 Fuel-displaced notch 256 is provided on 7 lower sides of switching valve of side, fuel-displaced notch 256 forms independent oil outlet chamber with 7 inner wall of valve chamber Road 28 is provided on 7 lower sides of switching valve with 255 homonymy of blowdown notch under capable of being connected with backwash cavity 251 Stomata 257, every time by after the driving commutation of Pneumatic motor assembly 24, oil inlet cavity 26 just only leads to preceding oil inlet the switching valve 25 The left back oil inlet passage 13 that road 14 is communicated with upper left filter chamber 81 is connected, fuel-displaced cavity 28 is just only by preceding oil discharge passage 16 and a left side The left back oil discharge passage 15 that lower filter chamber 82 communicates is connected, while stomata 252 is just only logical with air inlet on the first of left side Road 22 is connected to each other that connection, stomata 253 is just sealed by 7 inner wall of valve chamber on the second of right side, and air holes 257 is just Only behind the right side that is communicated with bottom right filter chamber 92 oil discharge passage 21 be connected to each other connection, blowdown cavity 27 just simultaneously with drain outlet 23 and Oil inlet passage 20 is connected behind the right side communicated with upper right filter chamber 91；Or oil inlet cavity 26 is just only by preceding oil inlet passage 14 and the right side Oil inlet passage 21 is connected behind the right side that upper filter chamber 91 communicates, fuel-displaced cavity 28 is just only by preceding oil discharge passage 16 and bottom right filter chamber 92 Oil discharge passage 21 is connected behind the right side communicated, at the same positioned at left side first on stomata 252 just sealed by 7 inner wall of valve chamber, Stomata 253 is just only connected to each other with inlet channel 22 and be connected on the second of right side, and air holes 257 is just and lower-left The left back oil discharge passage 15 that filter chamber 82 communicates be connected to each other connection, blowdown cavity 27 just simultaneously and drain outlet 23 and with upper left filter The left back oil inlet passage 13 that chamber 81 communicates is connected；The bypass as redundant filter is being also equipped with from the front end of secondary cleaner ontology Filter assemblies；

In the present embodiment, as shown in Figure 16, Figure 17, Figure 18, Figure 19, Figure 20, the structure of the bypass filter assemblies For：Including by-pass filter ontology 29, it is provided with bypass filter chamber and bypass valve chamber, bypass from front to back in by-pass filter ontology 29 The bypassed partition board 30 in inside of valve chamber separates bypass filter chamber 31 and lower bypass filter chamber 32 in phase, is provided on bypass partition board 30 The through-hole 33 that filter chamber 31 and lower bypass filter chamber 32 are bypassed in lower connection, is equipped at through-hole 33 in upper bypass filter chamber 31 Filter core 34 is bypassed, the right side wall top of by-pass filter ontology 29 is provided with first charging aperture 35, lower part is provided with the first discharging Mouth 36, is provided on the rear wall top of by-pass filter ontology 29 and is connected to be connected to each other with the oil inlet 2 from secondary cleaner ontology 1 Second charging aperture 37, lower part is provided with to be connected to each other the second discharge port being connected to the oil outlet 3 from secondary cleaner ontology 1 38, it is provided with to be connected to first charging aperture 35 and bypass the first of valve chamber upper space and feed in by-pass filter ontology 29 to lead to Road 39, the second feeding-passage 40 to be connected to second charging aperture 37 and bypass valve chamber upper space are filtered to be connected to upper bypass Chamber 31 with the third feeding-passage 41 of bypass valve chamber upper space, being connected to the first discharge port 36 and bypass valve chamber lower space The first tapping channel 42, the second tapping channel 43 to be connected to the second discharge port 38 and bypass valve chamber lower space and To the third tapping channel 44 for being connected to lower bypass filter chamber 32 with bypassing valve chamber lower space；It is provided in bypassing valve chamber by driving The bypass switching valve 46 of the driving rotation commutation of motivation structure 45 is provided with perforation bypass switching valve 46 on the top of bypass switching valve 46 Upper bypass cavity 47, lower part be provided with perforation bypass switching valve 46 lower bypass cavity 48, bypass switching valve 46 driven every time After the driving commutation of motivation structure, the first feeding-passage 39 on by-pass filter ontology 29 can be made by upper bypass cavity 47 only with second Feeding-passage 40 is connected and the first tapping channel 39 is only connected with the second tapping channel 43 by lower bypass cavity 48, or The first feeding-passage of person 39 is only connected with third feeding-passage 41 by upper bypass valve chamber 47 and the first tapping channel 42 passes through Lower bypass valve chamber is only connected with third tapping channel 44, and above-mentioned bypass filter assemblies are simple in structure, convenient to install and maintain；At this In embodiment, it is additionally provided in the side of by-pass filter ontology 29 to make from secondary cleaner ontology when bypassing switching valve 46 and commutating 1 pressure equaliser balanced with the internal pressure of by-pass filter ontology 29 can further increase the use peace of equipment in this way Full property and stability；In the present embodiment, being additionally provided on by-pass filter ontology 29 can be to entering by-pass filter ontology 29 The heating device that medium is heated makes filter can be suitably used for needing adding hot medium, expands the scope of application of equipment；

In the present embodiment, it is being provided with to detect pressure difference between oil inlet 2 and oil outlet 3 from secondary cleaner ontology 1 Pressure difference alarm 49, pressure difference alarm 49 connect with 24 signal of Pneumatic motor assembly, and Pneumatic motor assembly 24 recoils with gas bag The connection of 6 signal of component is washed, is pressed more than default safety when the detection of pressure difference alarm 49 obtains pressure difference between oil inlet 2 and oil outlet 3 When poor, pressure difference alarm 49 can send alarm signal to Pneumatic motor assembly 24, and Pneumatic motor assembly 24 receives alarm signal After can control switching valve 25 commutation, and when switching valve 25 commutate in place after, Pneumatic motor assembly 24 can control stopping switching valve 25 and backwash signal is sent to gas bag backwash component 6, gas bag backwash component 6 can by pre- after receiving backwash signal If the time blows high pressure gas to back flushing air import；Automatically it not only can rapidly and accurately judge whether work filter chamber needs to carry out Automatic cleaning, avoid because judge work filter chamber need scavenging period too late due to lead to the hair of fuel oil filter filter efficiency reduction situation It is raw, the safety in utilization of equipment is improved, and stop gas supply after the high pressure gas of gas bag backwash component offer certain time, It will not be carried out continuously gas supply recoil, online intermittent automatic cleaning is realized, greatly reduce energy consumption；

In the present embodiment, gas bag backwash component 6 includes gas bag and controls the recoil valve of gas bag opening and closing；Air motor group Part 24 includes：It is fixedly and coaxially connected with switching valve 25 and upper end protrudes from the shaft 241 of secondary cleaner ontology 1, driving upwards Air motor 242, the solenoid valve to control air motor 242 and be connect with 49 signal of pressure difference alarm of the rotation of shaft 241 243, the cam 244 that is set on the axle body of 241 upper end of shaft and be set to from 1 top of secondary cleaner ontology can with it is convex 244 matching of wheel merges the limit switch 245 being connect with recoil valve and solenoid signal, when solenoid valve 243 receives pressure difference alarm Air motor 242 can be controlled after the alarm signal that device 49 is sent makes switching valve 25 commutate, after switching valve 25 commutates in place, shaft Cam 244 on 241 axle bodies can touch limit switch 245, and limit switch 245 can be to solenoid valve 243 after being touched with 244 phase of cam It sends commutation and signal and sends backwash signal to recoil valve in place, solenoid valve 243 receives commutation can stop after signal in place Switching valve 25, recoil valve can be opened gas bag certain time after receiving backwash signal, realize recoil cleaning, above-mentioned air motor Component and gas bag backwash modular construction are simple, convenient to install and maintain；In the present embodiment, it is arranged at sewage backwash mouth 5 There is blowdown valve 50；；

The operation principle of the utility model is as follows：

In the fuel oil filter course of work, from the left filter chamber 8 in secondary cleaner ontology with right filter chamber 9 the two filter chambers always Be one of filter chamber as work filter chamber, another filter chamber as spare filter chamber；And do not occurring event from secondary cleaner ontology When barrier, bypasses the bypass switching valve 46 in filter assemblies and be in the first feeding-passage 39 always by upper bypass cavity 47 only with the Two feeding-passages 40 are connected and the first tapping channel 39 bypasses what cavity 48 was only connected with the second tapping channel 43 by lower Position；When switching valve 25 turns to the left back oil inlet passage that oil inlet cavity 26 only communicates preceding oil inlet passage 14 with upper left filter chamber 81 13 are connected, the left back oil discharge passage 15 that preceding oil discharge passage 16 is communicated with lower-left filter chamber 82 is only connected by fuel-displaced cavity 28, together When positioned at stomata 252 on the first of left side just only be connected to each other with inlet channel 22 be connected to, the stomata 253 on the second of right side It is just sealed by 7 inner wall of valve chamber, and just only oil discharge passage 21 is opposite behind the right side that is communicated with bottom right filter chamber 92 for air holes 257 Lead in succession, just oil inlet passage 20 is connected blowdown cavity 27 simultaneously and behind drain outlet 23 and the right side that is communicated with upper right filter chamber 91 When, first charging aperture 35, the first feeding-passage 39, upper bypass cavity 47, the second feeding-passage 40, second charging aperture 37, oil inlet Mouthfuls 2, preceding oil inlet passage 14, oil inlet cavity 26, left back oil inlet passage 13, upper left filter chamber 81, the first filter core 12, first through hole 11, Lower-left filter chamber 82, left back oil discharge passage 15, fuel-displaced cavity 28, preceding oil discharge passage 16, oil outlet 3, the second discharge port, the second discharging Independent filtration channel is just collectively formed in channel 43, lower bypass cavity 48, the first tapping channel 42 and the first discharge port 36；And And stomata 252, backwash cavity 251, air holes 257, bottom right filter chamber in back flushing air import at this time 4, inlet channel 22, first 92, the second through-hole 18, the second filter core 19, upper right filter chamber 91, blowdown cavity 27, drain outlet 23 and sewage backwash mouth 5 are common Form independent backwash channel；Left filter chamber 8 will be used as work filter chamber at this time, and right filter chamber 9 will be used as spare filter chamber；Then will Fuel oil to be cleaned is passed through from first charging aperture 35, and fuel oil to be cleaned can be successively through the first feeding-passage 39, upper bypass cavity 47, Two feeding-passages 40, second charging aperture 37, oil inlet 2, preceding oil inlet passage 14, oil inlet cavity 26, left back oil inlet passage 13 enter Upper left filter chamber 81, then using the first filter core 12, during fuel oil to be cleaned passes through the first filter core 12, fuel oil to be cleaned In the impurity that contains can be intercepted filtering by the filter opening of the first filter core 12 and be attached to the outer surface of the first filter core 12, and through first 12 filtered clean product of filter core again successively inside the first filter core 12, first through hole 11 enter lower-left filter chamber 82, then successively Through left back oil discharge passage 15, fuel-displaced cavity 28, preceding oil discharge passage 16, oil outlet 3, the second discharge port, the second tapping channel 43, under It is discharged from the first discharge port 36 after bypassing cavity 48, the first tapping channel 42, completes fuel filter process；

Left filter chamber 8 as work filter chamber fuel oil is filtered during, pressure difference alarm 49 can detect always into Pressure difference between hydraulic fluid port 2 and oil outlet 3；It is more than in advance when the detection of pressure difference alarm 49 obtains pressure difference between oil inlet 2 and oil outlet 3 If when safe pressure differential, the solenoid valve 243 that pressure difference alarm 49 can be into Pneumatic motor assembly 24 sends alarm signal, solenoid valve 243 receive pressure difference alarm 49 transmission alarm signal after can control air motor 242 make switching valve 25 commutate, work as switching valve 25 commutation to oil inlet cavities 26 just turn to oil inlet passage 21 behind the right side for only communicating preceding oil inlet passage 14 with upper right filter chamber 91 Be connected, oil discharge passage 21 behind the right side that preceding oil discharge passage 16 is communicated with bottom right filter chamber 92 is just only connected by fuel-displaced cavity 28, Stomata 252 is just sealed by 7 inner wall of valve chamber on the first of left side simultaneously, stomata 253 is just on the second of right side It is only connected to each other and is connected to inlet channel 22, and the left back oil discharge passage 15 that air holes 257 is just only communicated with lower-left filter chamber 82 It is connected to each other connection, blowdown cavity 27 just simultaneously and drain outlet 23 and 13 phase of left back oil inlet passage that is communicated with upper left filter chamber 81 When connection, the cam 244 on 241 axle body of shaft can touch limit switch 245, meeting after limit switch 245 is touched with 244 phase of cam Commutation signal in place is sent to solenoid valve 243, and solenoid valve 243 receives commutation can stop switching valve 25 after signal in place, at this time First charging aperture 35, the first feeding-passage 39, upper bypass cavity 47, the second feeding-passage 40, second charging aperture 37, oil inlet 2, Oil inlet passage 20, upper right filter chamber 91, the second filter core 19, the second through-hole 18, bottom right behind preceding oil inlet passage 14, oil inlet cavity 26, the right side Oil discharge passage 21, fuel-displaced cavity 28, preceding oil discharge passage 16, oil outlet 3, the second discharge port, the second tapping channel behind filter chamber 92, the right side 43, independent filtration channel can be just collectively formed in lower bypass cavity 48, the first tapping channel 42 and the first discharge port 36；And it is anti- Stomata 253, backwash cavity 251, air holes 257, lower-left filter chamber 82, first are logical in qi of chong channel ascending adversely import 4, inlet channel 22, second Independence can be collectively formed in hole 11, the first filter core 12, upper left filter chamber 81, blowdown cavity 27, drain outlet 23 and sewage backwash mouth 5 Backwash channel；Right filter chamber 9 will be used as work filter chamber at this time, and left filter chamber 8 will be used as spare filter chamber；At this time from the first charging The fuel oils to be cleaned that mouth 35 is passed through, can be successively through the first feeding-passage 39, upper bypass cavity 47, the second feeding-passage 40, second Oil inlet passage 20 enters upper right filter chamber 91 behind feed inlet 37, oil inlet 2, preceding oil inlet passage 14, oil inlet cavity 26, the right side, using Second filter core 19, during fuel oil to be cleaned passes through the second filter core 19, the impurity contained in fuel oil to be cleaned can be by second Filter core 19 intercepts filtering and is attached to the outer surface of the second filter core 19, and by 19 filtered clean product of the second filter core again according to It is secondary inside the second filter core 19, the second through-hole 18 enter bottom right filter chamber 92, then oil discharge passage 21, fuel-displaced cavity behind the right side successively 28, preceding oil discharge passage 16, oil outlet 3, the second discharge port, the second tapping channel 43, lower bypass cavity 48, the first tapping channel 42 It is discharged afterwards from the first discharge port 36, completes fuel filter process；

While limit switch 245 sends commutation signal in place to solenoid valve 243, component can be backwashed to gas bag simultaneously 6 recoil valve sends backwash signal, and recoil valve can open gas bag certain time after receiving backwash signal, makes gas bag to anti- The high pressure gas of a period of time is blown in qi of chong channel ascending adversely import 4, and the time can be automatically closed to rear recoil valve and stop continuing to blow high pressure gas, in gas bag During blowing high pressure gas, high pressure gas can be successively through stomata 253, backwash cavity on back flushing air import 4, inlet channel 22, second 251, air holes 257 is blown into lower-left filter chamber 82, to make the fuel oil being detained in lower-left filter chamber 82 recoil upwards from first through hole 11 Upper left filter chamber 81 is poured outward into inside the first filter core 12, then from 12 inside of the first filter core, in fuel oil out of first filter core 12 During portion pours upper left filter chamber 81 outward, the fuel oil gone out outward can rush the impurity for being attached to 12 outer surface of the first filter core It walks, to complete the cleaning to the first filter core 12, the first filter core 12 is made to restore filtering function again, and take away the fuel oil meeting of impurity It again through blowdown cavity 27, drain outlet 23 and sewage backwash mouth 5, then exports and is discharged from blowdown valve 50, to complete the first filter The backwash process of core 12；

During right filter chamber 9 is filtered fuel oil as work filter chamber, pressure difference alarm 49 can also detect always Pressure difference between oil inlet 2 and oil outlet 3；It is more than when the detection of pressure difference alarm 49 obtains pressure difference between oil inlet 2 and oil outlet 3 When default safe pressure differential, the solenoid valve 243 that pressure difference alarm 49 can be into Pneumatic motor assembly 24 sends alarm signal, solenoid valve 243 receive pressure difference alarm 49 transmission alarm signal after can control air motor 242 make switching valve 25 commutate, work as switching valve 25 commutation to oil inlet cavities 26 turn to the left back oil inlet passage 13 for only communicating preceding oil inlet passage 14 with upper left filter chamber 81 again It is connected, fuel-displaced cavity 28 turns to 15 phase of left back oil discharge passage for only communicating preceding oil discharge passage 16 with lower-left filter chamber 82 again Connection, at the same on the first of left side stomata 252 just turn to again be only connected to each other with inlet channel 22 be connected to, be located at it is right Stomata 253 is just sealed by 7 inner wall of valve chamber again on the second of side, and air holes 257 just turn to again only with the right side Behind the right side that lower filter chamber 92 communicates oil discharge passage 21 be connected to each other connection, blowdown cavity 27 just again simultaneously and drain outlet 23 and with When oil inlet passage 20 is connected behind the right side that upper right filter chamber 91 communicates, the cam 244 on 241 axle body of shaft can touch limit switch 245, limit switch 245 can send commutation after being touched with 244 phase of cam to solenoid valve 243, and signal, solenoid valve 243 receive in place Commutation can stop switching valve 25 after signal in place, at this time first charging aperture 35, the first feeding-passage 39, upper bypass cavity 47, the Two feeding-passages 40, second charging aperture 37, oil inlet 2, preceding oil inlet passage 14, oil inlet cavity 26, left back oil inlet passage 13, upper left Filter chamber 81, the first filter core 12, first through hole 11, lower-left filter chamber 82, left back oil discharge passage 15, fuel-displaced cavity 28, preceding oil discharge passage 16, oil outlet 3, the second discharge port, the second tapping channel 43, lower bypass cavity 48, the first tapping channel 42 and the first discharge port 36 are just collectively formed independent filtration channel again；And stomata 252, recoil in back flushing air import 4, inlet channel 22, first Wash cavity 251, air holes 257, bottom right filter chamber 92, the second through-hole 18, the second filter core 19, upper right filter chamber 91, blowdown cavity 27, row Independent backwash channel is collectively formed in dirty channel 23 and sewage backwash mouth 5 again；Left filter chamber 8 will be re-used as work at this time Filter chamber, and right filter chamber 9 will be used as spare filter chamber；The fuel oil to be cleaned from secondary cleaner ontology 1 is passed through from first charging aperture 35 at this time It can be successively through the first feeding-passage 39, upper bypass cavity 47, the second feeding-passage 40, second charging aperture 37, oil inlet 2, advance Oily channel 14, oil inlet cavity 26, left back oil inlet passage 13 enter upper left filter chamber 81, then using the first filter core 12, are waiting for clearly Fuel oil is washed by during the first filter core 12, the impurity contained in fuel oil to be cleaned can be again by the filter opening institute of the first filter core 12 The outer surface for filtering and being attached to the first filter core 12 is intercepted, and through 12 filtered clean product of the first filter core again successively from first Inside filter core 12, first through hole 11 enter lower-left filter chamber 82, then successively through left back oil discharge passage 15, fuel-displaced cavity 28, preceding fuel-displaced From first after channel 16, oil outlet 3, the second discharge port, the second tapping channel 43, lower bypass cavity 48, the first tapping channel 42 Discharge port 36 is discharged, and completes fuel filter process；

While limit switch 245 sends commutation signal in place to solenoid valve 243, component can be backwashed to gas bag simultaneously 6 recoil valve sends backwash signal, and recoil valve can open gas bag certain time after receiving backwash signal, makes gas bag to anti- The high pressure gas of a period of time is blown in qi of chong channel ascending adversely import 4, and the time can be automatically closed to rear recoil valve and stop continuing to blow high pressure gas, in gas bag During blowing high pressure gas, high pressure gas can be successively through stomata 252, backwash chamber on back flushing air import 4, inlet channel the 22, the firstth Road 251, air holes 257 are blown into bottom right filter chamber 92, to keep the fuel oil being detained in bottom right filter chamber 92 anti-upwards from the second through-hole 18 It rushes in inside the second filter core 19, then upper right filter chamber 91 is poured outward from the inside of the second filter core 19, in fuel oil from the second filter core 19 During upper right filter chamber 91 is poured in inside outward, the fuel oil gone out outward can will be attached to the impurity of 19 outer surface of the second filter core It washes away, to complete the cleaning to the second filter core 19, the second filter core 19 is made to restore filtering function again, and take away the fuel oil of impurity Can be again through blowdown cavity 27, drain outlet 23 and sewage backwash mouth 5, then export and be discharged from blowdown valve 50, to complete second The backwash process of filter core 19；

Repeat aforesaid operations, you can to realize the automatic cleaning to filter core；

When needing maintenance when from the failure of secondary cleaner ontology 1 filter fuel can not be continued, driving mechanism 45 is made to drive Bypass switching valve 46 commutate, make the first feeding-passage 39 be only connected with third feeding-passage 41 by upper bypass valve chamber 47 and First tapping channel 42 is only connected with third tapping channel 44 by lower bypass valve chamber, at this point, being passed through from first charging aperture 35 Fuel oil to be cleaned will be unable to go successively to from secondary cleaner ontology 1, so as to carry out the check man from secondary cleaner ontology 1 Make；Fuel oil to be cleaned is after first charging aperture 35 is passed through at this time, can be successively through the first feeding-passage 39, upper bypass valve road 47 and the Three feeding-passages 41 enter upper bypass filter chamber 31, enter lower bypass filter chamber 32 from through-hole 33 using after bypass filter core 34, are waiting for During fuel oil is cleaned by bypass filter core 34, the impurity that contains in fuel oil to be cleaned can the filter opening of bypassed filter core 34 blocked It cuts filtering and is attached to the outer surface for bypassing filter core 34, and through bypassing 34 filtered clean product of filter core out of bypass filter core 34 After portion, through-hole 33 enter lower bypass filter chamber 32, then successively through third tapping channel 44, lower bypass valve chamber 48 and the first tapping channel It is discharged from the first discharge port 36 after 42, completes fuel filter process；

From after the completion of 1 trouble hunting of secondary cleaner ontology, so that the driving bypass switching valve 46 of driving mechanism 45 is commutated again, make side Cross valve 46 is only connected with the second feeding-passage 40 in the first feeding-passage 39 by upper bypass cavity 47 always again, And first tapping channel 39 by the lower position that is only connected with the second tapping channel 43 of bypass cavity 48, at this time from the first charging The fuel oils to be cleaned that mouth 35 is passed through, which can be reentered, carries out fuel filter from secondary cleaner ontology 1, and can not continue through bypass The bypass filter core 34 of filter body 1 carries out fuel filter.

The utility model has the advantages that：It is easy for operation, less energy consumption, energy online intermittent automatic cleaning filter core, cleaning Efficient and cleaning performance is good.

Claims (7)

1. the self-cleaning fuel oil filter with redundant filter, it is characterised in that：Including from secondary cleaner ontology, from secondary cleaner ontology The top of front side wall is provided with oil inlet, lower part is provided with oil outlet, is provided with instead from the top of secondary cleaner ontology rear wall Qi of chong channel ascending adversely import, lower part are provided with sewage backwash mouth, are provided in back flushing air entrance to blow high pressure gas to back flushing air import Gas bag backwash component, it is independent side by side setting gradually that there are one valve chamber and two or so from front to back from secondary cleaner ontology Filter chamber, the inside of each filter chamber is separated into upper filter chamber and lower filter chamber by partition board, is respectively arranged on the partition board of each filter chamber The through-hole of filter chamber and lower filter chamber in several connections, the through hole of partition board is separately installed with positioned at corresponding upper filter chamber in each filter chamber In filter core, from the upper filter chamber of each of secondary cleaner ontology respectively by one after oil inlet passage be connected with valve chamber upper space, Valve chamber upper space is connected by preceding oil inlet passage with oil inlet, passes through one respectively from the lower filter chamber of each of secondary cleaner ontology Oil discharge passage is connected with valve chamber lower space afterwards, and valve chamber lower space is connected by preceding oil discharge passage with oil outlet respectively, Being disposed with from top to bottom from secondary cleaner ontology between two filter chambers is connected to back flushing air import and valve chamber top The inlet channel in space and to be connected to the drain outlet of sewage backwash mouth and valve chamber lower space；It is movable in valve chamber Sealed set has the switching valve for driving rotation commutation by Pneumatic motor assembly, central axial in switching valve to be provided with backwash chamber Road, radially there are two the upper stomatas communicated simultaneously with backwash cavity for setting in the upper portion side wall of switching valve, when switching valve changes To when two upper stomata energy alternate communication inlet channels, be provided with oil inlet notch, oil inlet on the side side wall of upper portion of conversion valve Notch forms independent oil inlet cavity with valve chamber inner wall, and blowdown notch is provided on the other side side wall of upper portion of conversion valve, arranges Dirty notch forms independent blowdown chamber with valve chamber inner wall, is provided with out on the switching valve lower sides of oil inlet notch homonymy Oily notch, fuel-displaced notch forms independent fuel-displaced cavity with valve chamber inner wall, in the switching valve lower sides with blowdown notch homonymy On be provided with can with the air holes that be connected of backwash cavity, the switching valve every time by after Pneumatic motor assembly driving commutation, The preceding oil inlet passage rear oil inlet passage communicated corresponding with a filter chamber is just only connected by oil inlet cavity, fuel-displaced cavity just The preceding oil discharge passage rear oil discharge passage communicated corresponding with the filter chamber is connected, while a upper stomata is just only and inlet channel It is connected to each other that connection, stomata is just sealed by valve chamber inner wall on another, and air holes is just only corresponding with another filter chamber The rear oil discharge passage communicated be connected to each other connection, blowdown cavity just simultaneously and drain outlet and the rear oil inlet that is communicated with the filter chamber it is logical Road is connected；It is being also equipped with bypass filter assemblies from the front end of secondary cleaner ontology.

2. the self-cleaning fuel oil filter according to claim 1 with redundant filter, it is characterised in that：Bypass filter assemblies Structure be：Including by-pass filter ontology, it is provided with bypass filter chamber and bypass valve chamber from front to back in by-pass filter ontology, it is other The bypassed partition board in inside of port valve chamber separates bypass filter chamber and lower bypass filter chamber in phase, and connection up and down is provided on bypass partition board The through-hole of upper bypass filter chamber and lower bypass filter chamber is equipped with the bypass filter core in upper bypass filter chamber in through hole, is bypassing The right side wall top of filter body is provided with first charging aperture, lower part is provided with the first discharge port, after by-pass filter ontology Side wall upper part is provided with to be connected to each other the second charging aperture being connected to the oil inlet from secondary cleaner ontology, lower part be provided with to It is connected to each other the second discharge port being connected to the oil outlet from secondary cleaner ontology, is provided with to be connected in by-pass filter ontology One feed inlet and bypass valve chamber upper space the first feeding-passage, to be connected to second charging aperture with bypass valve chamber upper space The second feeding-passage, to be connected to upper bypass filter chamber with the third feeding-passage of bypass valve chamber upper space, being connected to the One discharge port with bypass valve chamber lower space the first tapping channel, to be connected to the second discharge port with bypass valve chamber lower space The second tapping channel and to be connected to it is lower bypass filter chamber with bypass valve chamber lower space third tapping channel；It is bypassing It is provided with the bypass switching valve for driving rotation commutation by driving mechanism in valve chamber, is provided with by perforation on the top of bypass switching valve The upper bypass cavity of cross valve, lower part are provided with the lower bypass cavity of perforation bypass switching valve, and bypass switching valve is driven every time After the driving commutation of motivation structure, the first feeding-passage on by-pass filter ontology can be made to pass through upper bypass cavity only logical with the second charging Road is connected and the first tapping channel is only connected with the second tapping channel by lower bypass cavity or the first feeding-passage Only it is connected with third feeding-passage by upper bypass valve chamber and the first tapping channel is only discharged with third by lower bypass valve chamber Channel is connected.

3. the self-cleaning fuel oil filter according to claim 2 with redundant filter, it is characterised in that：In by-pass filter sheet The side of body is additionally provided with bypassing the internal pressure made when switching valve commutation from secondary cleaner ontology and by-pass filter ontology The pressure equaliser of balance.

4. the self-cleaning fuel oil filter according to claim 2 with redundant filter, it is characterised in that：In by-pass filter sheet The heating device that can be heated to the medium for entering by-pass filter ontology is additionally provided on body.

5. the self-cleaning fuel oil filter according to claim 1 or 2 or 3 or 4 with redundant filter, it is characterised in that： It is provided with to detect the pressure difference alarm of pressure difference between oil inlet and outlet, pressure difference alarm and gas from secondary cleaner ontology Dynamic motor sub-assembly signal connection, Pneumatic motor assembly is connect with gas bag backwash component signals, when pressure difference alarm detects to obtain When pressure difference is more than default safe pressure differential between oil inlet and outlet, pressure difference alarm can send alarm signal to Pneumatic motor assembly Number, Pneumatic motor assembly can control switching valve commutation after receiving alarm signal, and after switching valve commutates in place, pneumatic horse It can be controlled up to component and stop switching valve and send backwash signal to gas bag backwash component, gas bag backwash component receives After backwash signal high pressure gas can be blown to back flushing air import at preset timed intervals.

6. the self-cleaning fuel oil filter according to claim 5 with redundant filter, it is characterised in that：Gas bag backwash group Part includes gas bag and the recoil valve of control gas bag opening and closing；Pneumatic motor assembly includes：It is fixedly and coaxially connected with switching valve and upper end Protrude from upwards the shaft of secondary cleaner ontology, the air motor rotated to drive shaft, to control air motor and with pressure It the solenoid valve of difference alarming device signal connection, the cam that is set to shaft upper shaft and is set to from secondary cleaner ontology top The limit switch for merging and being connect with recoil valve and solenoid signal that can match with cam in portion；When solenoid valve receives pressure difference alarm Switching valve commutation can be controlled after the alarm signal that device is sent, and after switching valve commutates in place, the cam meeting on shaft axle body Touch limit switch, limit switch mutually touched with cam after can to solenoid valve send commutation in place signal and to recoil valve transmission Signal is backwashed, solenoid valve receives commutation can stop switching valve after signal in place, and recoil valve receives meeting after backwash signal Gas bag certain time is opened, realizes recoil cleaning.

7. according to the self-cleaning fuel oil filter with redundant filter described in claims 1 or 2 or 3 or 4 or 6, it is characterised in that： It is provided with blowdown valve at sewage backwash mouth.