CN103527371B - Full-automatic backwash filter - Google Patents
Full-automatic backwash filter Download PDFInfo
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- CN103527371B CN103527371B CN201310542709.XA CN201310542709A CN103527371B CN 103527371 B CN103527371 B CN 103527371B CN 201310542709 A CN201310542709 A CN 201310542709A CN 103527371 B CN103527371 B CN 103527371B
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Abstract
The invention relates to a full-automatic backwash filter. The full-automatic backwash filter comprises a tubular barrel and a lower barrel, wherein a tubular filter element is arranged in the barrel, and a cleaning rotating shaft is arranged in the filter element; the filter element is composed of a tubular inner mesh plate, a tubular outer mesh plate and a foldable filter screen; a left scraping plate and a right scraping plate are symmetrically arranged on the cleaning rotating shaft, wherein the left scraping plate is provided with a cleaning groove, the cleaning groove stretches deep into the left scraping plate in the radial direction of the cleaning rotating shaft to form a flow passage, and the cleaning groove is communicated with a tubular shaft at the lower end of the cleaning rotating shaft; an opening of the cleaning groove makes contact with the inner mesh plate of the filter element. According to the full-automatic backwash filter, the structural design of the fixed filter element and the cleaning rotating shaft is adopted, the running torque of the cleaning rotating shaft is quite small, the opening of the cleaning groove in the left scraping plate is an inverted horn-shaped opening, a divergent nozzle design in fluid dynamics is adopted, differential pressure inside and outside the filter element is fully utilized, so that the flow velocity of cleaning fluid is increased, and the cleaning effect is improved effectively; the service life of the filter element can be effectively prolonged, and the maintenance cost of the filter in a later period is lowered substantially.
Description
Technical field
The invention belongs to the technical field of fuel oil secondary filter equipment, be specifically related to the fuel strainer of marine engine.
Background technique
At present, because considering Economy, poor quality fuel oil (heavy oil) use on marine engine becomes inexorable trend, along with the trend of the maximization of boat diesel engine, user requires more and more higher to the range of flow of fuel filter, precision grade and working life etc., simultaneously in order to ensure the continuity of vessel motion, bunker oil filter generally adopts can the design of auto-flushing.The automatic cleaning of fuel filter generally adopts isolation cleaning and continuous wash two kinds of forms, front a kind of form is used comparatively early, but in actual cleaning process, there is the switching motion of interrupter, easily cause the discontinuity of fuel delivery, simultaneously easy entrained air in fuel oil supply system during isolation action, affect the supply quality of diesel engine fuel oil, rear a kind of formal cause is without isolation switching motion, cleaning can be carried out continuously, less on the impact of fuel oil supply system, be the development trend of current fuel oil from secondary cleaner.Its basic principle of fuel oil auto-flushing filter of the continuous wash of current use is all directions of the flowing of filter oil is from filter core external-to-internal, filter core dirty stifled time make the inner and filter of filter core produce partial pressure differential outward by the cleaning point cantact of washing unit and filter core, produce and the reverse fluid in fuel filter direction, to reach the effect of filter cartridge flushing, then by rotating filter element more than one week, repeatedly repeat flushing action, reach the effect of rinsing whole filter core.The fuel oil auto-flushing filter of continuous wash so at present, filter core is rotate in cleaning process, and for ensureing that the rotation of filter core must arrange filter shaft and supporting frame on filter cartridge construction, complicated filter cartridge construction can be given and manufacture suitable difficulty; Simultaneously because the large scale development trend of diesel engine makes the requirement of filter core effective discharge more and more large, filter core size also has to correspondingly strengthen, along with the increase of filter core diameter, need the size strengthening supporting member could meet the Structural strength calls of filter core, but the increasing of support member will inevitably make effective flux of filter core reduce, filter core size must be increased again to improve effective discharge, causing a kind of vicious circle in structural design; Moreover the increase along with filter core size can cause the requirement of the increase of sealing surface to sealing material higher, the running clearance of filter core will correspondingly amplify simultaneously.The temperature difference of the different oil products of bunker oil is at about 100 DEG C, and the rotary gap of filter core is difficult to take into account hot and cold conditions because of the difference produced of expanding with heat and contract with cold, and the turnover of cold conditions lower filter can be caused easily to go here and there oil, have a strong impact on filtering effect; The increase of filter core size also can increase the resistance of filter core rotation simultaneously, directly affects the size of filter core driving mechanism.In sum, the fuel filter of the continuous wash that current use is maximum because the structural limitations of its rotating filter element, ubiquity filter cartridge construction is complicated, Scantlings little, easy compared with large, filter core effective discharge occur string oil (absolute oil and sump oil can not effectively be isolated), running torque large, without the cleaning point cantact of temperature compensation and washing unit and filter core to cause the defects such as filter core damage.
Summary of the invention
In order to realize ensureing, under the prerequisite constant to the grade of frit flow, by the fuel filter miniaturization of continuous wash, to simplify the structure, summary is safeguarded in assembling, the invention provides a kind of Full automatic backwashing filter.
Full automatic backwashing filter, comprise cylindrical shell and the lower cylinder body of circular tube shaped, be provided with the filter core of circular tube shaped in cylindrical shell, be provided with cleaning rotating shaft in filter core, the upper end of cylindrical shell is provided with upper cover, and lower end is provided with lower cover, covers and offer four fan-shaped tunnel inlets under described; The upper end of cleaning rotating shaft extends outside upper cover, and lower end extends in lower cylinder body through lower cover; Sidewall in the middle part of described cylindrical shell is provided with filter outlets; Described lower cylinder body is the cylindrical body of upper end open lower end closed, and the sidewall of lower cylinder body is provided with filter import, and the lower axial end of cylindrical shell is connected to the upper end of lower cylinder body;
In the cylindrical shell corresponding with lower cover, lower end mouth place is provided with the seal ring seat of ring-type, seal ring is provided with between the external cylindrical surface of seal ring seat and the inner cylindrical surface of cylindrical shell, the lower end of described filter core is positioned in seal ring seat, and the upper end of filter core is fixed at upper end-hole place in cylindrical shell by retaining ring; Described filter core is made up of the inner mesh plate of circular tube shaped, the outer mesh plate of circular tube shaped and folding filter screen, and folding filter screen is between inner mesh plate and outer mesh plate;
Cleaning rotating shaft in cylindrical shell is arranged with left scraper plate and right scraper plate, left scraper plate and right scraper plate are in same plane; Coordinated by bearing and upper bearing bracket between the upper end of cleaning rotating shaft and upper cover, the lower end of cleaning rotating shaft is tubular axis, and is coordinated by lower bearing between lower cover; Described left scraper plate offers cleaning tank; Described cleaning tank is equidirectional with the axis of cleaning rotating shaft, cleaning tank gos deep into forming runner in left scraper plate along the radial direction of cleaning rotating shaft, and is communicated with the tubular axis cleaning rotating shaft lower end; The notch of cleaning tank is positioned at the outboard end of left scraper plate, and contacts with the inner mesh plate of filter core; The middle part of right scraper plate is provided with the circular arc of radially indent, and upper outer end and the lower outer of the right scraper plate be connected with described circular arc two ends form locating bump, described locating bump rectangular-blocklike, and contact with the inner mesh plate of filter core; Bottom in lower cylinder body is provided with upright columned connecting base, connecting base internal upper part is provided with the cleaning runner of blind hole shape, the tubular axis of cleaning rotating shaft lower end is plugged in cleaning runner, and the lower end of described cleaning runner is communicated with one end of back washing transverse tube, and the other end of back washing transverse tube extends lower cylinder body outside; The bottom of connecting base is provided with the inner groovy to fovea superior, and described inner groovy is communicated with the bottom in lower cylinder body, is provided with and puts residual outlet bottom the lower cylinder body corresponding with the inner groovy of connecting base, puts residual outlet and and put residual pipe, put residual pipe and be positioned at lower cylinder body outside.
The cross section of described cleaning tank is strip, and the notch of cleaning tank is outer little interior horn mouth greatly, and groove depth is 50 ~ 100mm, and groove width is 15mm, and width of rebate is 6mm.
Two seals circle is provided with between the external cylindrical surface of described seal ring seat and the inner cylindrical surface of cylindrical shell.
Advantageous Effects of the present invention embodies in the following areas:
1. the present invention adopts the structural design of fixing filter core and cleaning rotating shaft, owing to cleaning the little order of magnitude of area of contact of the left scraper plate in rotating shaft, the rotating contact area ratio filter core rotational structure between right scraper plate and filter core inwall, so the running torque of cleaning rotating shaft is very little, driving mechanism is easy to the accurate control of cleaning some position, effectively can promote cleaning performance;
2. the present invention passes through architecture advances, make the filter oil realization flow direction from inside to outside, like this when carrying out the maintenance clean of filter core, be convenient to adopt high pressure air internally to rinse from outer, operation is easy to compared with traditional flushing from inside to outside, cleaning performance is better, effectively can extend the working life of filter core, significantly reduce the later maintenance cost of filter;
3. the present invention changes conventional bowl sealing means, have employed upper plane end face seal, sealing is simply easy to make assembling, bottom adopts the seal ring seat structure of ring-type to realize the sealing of floating type "O"-ring, twice " O " RunddichtringO effectively isolates absolute oil and sump oil altogether, it is temperature compensating good that "O"-ring seals, precision is ensured by machining apparatus, the lower end of filter core is non-stationary structure simultaneously, can free-extension be varied with temperature, efficiently solve the adaptability of filter to different oil product temperature;
4. present invention improves over the structure of filter core, have employed folding stainless steel filtering net, improve more than 5 times relative to the flat filter net filter cartridge construction filter area of equivalent diameter, even if service precision does not need to increase up to the filter screen filter size of 10um, inner mesh plate and the outer mesh plate of filter core all have employed stainless (steel) wire orifice plate, inner mesh plate and outer mesh plate are as the supporting structure of filter core, this structure has lightweight, intensity is high, welding procedure is simple, precision easily ensures, effective discharge value is large and be easy to the advantages such as cleaning, in the installation of reality, filter screen can be effectively avoided to be subject to improper damage in maintainability dismounting and filter element cleaning operation,
5. on the left scraper plate of the present invention, the notch of cleaning tank is for falling horn mouth, and have employed the divergent nozzle design on hydrokinetics, make full use of the inside and outside pressure reduction of filter core, improve the flow velocity of washing fluid, cleaning performance is better than uniform section runner.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is working principle schematic diagram of the present invention.
Fig. 3 is that the upper left scraper plate of Fig. 2 and right scraper plate turn over 90 degree of view.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is the stereogram of rotating shaft.
Fig. 6 is the sectional block diagram of Fig. 5.
Sequence number in upper figure: lower cylinder body 1, put residual pipe 2, back washing transverse tube 3, seal ring 4, cylindrical shell 5, upper cover 6, upper bearing bracket 7, left scraper plate 8, right scraper plate 9, bleed valve 10, filter core 11, filter outlets 12, cleaning rotating shaft 13, filter import 14, lower bearing 15, connecting base 16, folding filter screen 17, inner mesh plate 18, notch 19, outer mesh plate 20, locating bump 21, put residual outlet 22.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.
See Fig. 1 and Fig. 2, Full automatic backwashing filter comprises cylindrical shell 5 and the lower cylinder body 1 of circular tube shaped, is provided with the filter core 11 of circular tube shaped in cylindrical shell 5, and be provided with cleaning rotating shaft 13 in filter core 11, the upper end of cylindrical shell 5 is provided with upper cover 6, and lower end is provided with lower cover; Under cover and offer four fan-shaped tunnel inlets, and bleed valve 10 is installed.The upper end of cleaning rotating shaft 13 extends outside upper cover 6, and lower end extends in lower cylinder body 1 through lower cover.Sidewall in the middle part of cylindrical shell 5 offers filter outlets 12.Lower cylinder body 1 is the cylindrical body of upper end open, lower end closed, the sidewall of lower cylinder body 1 offers filter import 14, and the lower axial end of cylindrical shell 5 is connected to the upper end of lower cylinder body 1.
In the cylindrical shell 5 corresponding with lower cover, lower end mouth place is provided with the seal ring seat of ring-type, between the external cylindrical surface of seal ring seat and the inner cylindrical surface of cylindrical shell 5, two seals circle 4 is installed, the lower end of filter core 11 is positioned in seal ring seat, and the upper end of filter core 11 is fixedly installed in upper end-hole place in cylindrical shell 5 by retaining ring.The entirety that filter core 11 is made up of the inner mesh plate 18 of circular tube shaped, the outer mesh plate 20 of circular tube shaped and folding filter screen 17, folding filter screen 17 is between inner mesh plate 18 and outer mesh plate 20.
Cleaning rotating shaft 13 in cylindrical shell 5 is arranged with left scraper plate 8 and right scraper plate 9, and left scraper plate 8 and right scraper plate 9 are in same plane; Coordinated by bearing and upper bearing bracket 7 between the upper end of cleaning rotating shaft 13 and upper cover 6, the lower end of cleaning rotating shaft 13 is tubular axis, and is coordinated by lower bearing 15 between lower cover.See Fig. 5 and Fig. 6, left scraper plate 8 offers cleaning tank; Described cleaning tank is equidirectional with the axis of cleaning rotating shaft 13, and cleaning tank to go deep in left scraper plate 8 along the radial direction of cleaning rotating shaft 13, and is communicated with the tubular axis cleaning rotating shaft 13 lower end; The cross section of cleaning tank is strip, and the notch of cleaning tank is outer little interior horn mouth greatly, and groove depth is 70mm, and groove width is 15mm, and width of rebate is 6mm; The notch 19 of cleaning tank is positioned at the outboard end of left scraper plate 8, and contacts with the inner mesh plate 18 of filter core.The middle part of right scraper plate 9 is provided with the circular arc of radially indent, and upper outer end and the lower outer of the right scraper plate 9 be connected with described circular arc two ends form locating bump 21, described locating bump 21 rectangular-blocklike, and contact with the inner mesh plate 18 of filter core; Bottom in lower cylinder body 1 is provided with upright columned connecting base 16, connecting base 16 internal upper part offers the cleaning runner of blind hole shape, the tubular axis of cleaning rotating shaft 13 lower end is inserted in cleaning runner, the lower end of cleaning runner is communicated with one end of back washing transverse tube 3, and the other end of back washing transverse tube 3 extends lower cylinder body 1 outside; The bottom of connecting base 16 is provided with the inner groovy to fovea superior, inner groovy is communicated with the bottom in lower cylinder body 1, offer bottom the lower cylinder body 1 corresponding with the inner groovy of connecting base 16 and put residual outlet 22, put residual outlet 22 and be communicated with and put residual pipe 2, putting residual pipe 2, to be positioned at lower cylinder body 1 outside.
Working principle of the present invention is described as follows:
During filter normal filtration as shown in Figure 2: the fluid that filter enters filter from the filter import 14 of lower cylinder body 1, filter core is entered by filter core 11 bottom, by inner mesh plate 18, folding filter screen 17 and outer mesh plate 20, in fluid, the folded filter screen of impurity 17 is tackled and is stayed on folding filter screen 17, clean fluid arrives the outside of filter core through filter core 11, then discharged by the filter outlets 12 on cylindrical shell 5, complete the filter process of whole fluid.Now clean rotating shaft 13 transfixion.In Fig. 2, filled arrows represents the impure fluid before filtration, and hollow arrow represents fluid clean after filtering.
During filter back washing as shown in Figure 3: when filter core 11 after long-term use, the impurity tackled of folded filter screen 17 is residual gathers certain degree, the passing capacity of folding filter screen 17 will decline, the inside and outside differential pressure of folding filter screen 17 is caused to rise, when differential pressure pickup detects that the inside and outside differential pressure of folding filter screen 17 reaches predefined value, the solenoid valve that back washing transverse tube 3 connects is opened, cleaning runner in cleaning rotating shaft 13 and flow of ambient air, pressure in cleaning runner in cleaning rotating shaft 13 sharply declines, folding filter screen 17 internal pressure when notch 19 place of the cleaning tank on left scraper plate 8 is far smaller than external pressure, fluid produces a flow direction contrary with filtering direction herein, see Fig. 4, fluid relies on folding filter screen 17 external pressure through outer mesh plate 20, folding filter screen 17 and inner mesh plate 18 enter the cleaning runner in cleaning rotating shaft 13, folding filter screen 17 to be tackled and the impurity remaining in folding filter screen 17 washes away, discharge through back washing transverse tube 3.Because the notch 19 of cleaning tank is in outer little interior horn mouth greatly, and contact with inner mesh plate 18, so the fluid in the notch 19 outside both sides filter core 11 of cleaning tank can not enter cleaning tank, washing fluid can only enter the cleaning runner in cleaning rotating shaft 13 along outer mesh plate 20, folding filter screen 17 and this paths of inner mesh plate 18.While the solenoid valve of back washing transverse tube 3 connection is opened, left scraper plate 8 rotated for one to two weeks under cleaning rotating shaft 13 drives, and the notch 19 of cleaning tank contacts one to twice with inner mesh plate 18, thus completes the cleaning action to whole filter core 11.The fluid of the impurity in Fig. 3 and Fig. 4 after the fluid of the impurity that filled arrows contains before representing filtration and back washing, hollow arrow represents fluid clean after filtering.
In cleaning process, the solenoid valve opening time that can be communicated with according to the degree adjustment back washing transverse tube 3 of filter core residual impurity, to reach best cleaning performance.Because the area that filter core 11 only matches with the notch 19 of cleaning tank carries out back washing, and still carries out normal filtration operation on other areas, so on using the motor of filter oil not have any impact.After having cleaned, close the solenoid valve that back washing transverse tube 3 is communicated with, normal filtration working state got back to by filter.
Claims (3)
1. Full automatic backwashing filter, comprise cylindrical shell and the lower cylinder body of circular tube shaped, be provided with the filter core of circular tube shaped in cylindrical shell, be provided with cleaning rotating shaft in filter core, the upper end of cylindrical shell is provided with upper cover, and lower end is provided with lower cover, covers and offer four fan-shaped tunnel inlets under described; The upper end of cleaning rotating shaft extends outside upper cover, and lower end extends in lower cylinder body through lower cover; Sidewall in the middle part of described cylindrical shell is provided with filter outlets; Described lower cylinder body is the cylindrical body of upper end open, lower end closed, and the sidewall of lower cylinder body is provided with filter import, and the lower axial end of cylindrical shell is connected to the upper end of lower cylinder body; It is characterized in that:
In the cylindrical shell corresponding with lower cover, lower end mouth place is provided with the seal ring seat of ring-type, seal ring is provided with between the external cylindrical surface of seal ring seat and the inner cylindrical surface of cylindrical shell, the lower end of described filter core is positioned in seal ring seat, and the upper end of filter core is fixed at upper end-hole place in cylindrical shell by retaining ring; Described filter core is made up of the inner mesh plate of circular tube shaped, the outer mesh plate of circular tube shaped and folding filter screen, and folding filter screen is between inner mesh plate and outer mesh plate;
Cleaning rotating shaft in cylindrical shell is arranged with left scraper plate and right scraper plate, left scraper plate and right scraper plate are in same plane; Coordinated by bearing and upper bearing bracket between the upper end of cleaning rotating shaft and upper cover, the lower end of cleaning rotating shaft is tubular axis, and is coordinated by lower bearing between lower cover; Described left scraper plate offers cleaning tank; Described cleaning tank is equidirectional with the axis of cleaning rotating shaft, cleaning tank gos deep into forming runner in left scraper plate along the radial direction of cleaning rotating shaft, and is communicated with the tubular axis cleaning rotating shaft lower end; The notch of cleaning tank is positioned at the outboard end of left scraper plate, and contacts with the inner mesh plate of filter core; The middle part of right scraper plate is provided with the circular arc of radially indent, and upper outer end and the lower outer of the right scraper plate be connected with described circular arc two ends form locating bump, described locating bump rectangular-blocklike, and contact with the inner mesh plate of filter core; Bottom in lower cylinder body is provided with upright columned connecting base, connecting base internal upper part is provided with the cleaning runner of blind hole shape, the tubular axis of cleaning rotating shaft lower end is plugged in cleaning runner, and the lower end of described cleaning runner is communicated with one end of back washing transverse tube, and the other end of back washing transverse tube extends lower cylinder body outside; The bottom of connecting base is provided with the inner groovy to fovea superior, and described inner groovy is communicated with the bottom in lower cylinder body, is provided with and puts residual outlet bottom the lower cylinder body corresponding with the inner groovy of connecting base, puts residual outlet and and put residual pipe, put residual pipe and be positioned at lower cylinder body outside.
2. Full automatic backwashing filter according to claim 1, is characterized in that: the cross section of described cleaning tank is strip, and the notch of cleaning tank is outer little interior horn mouth greatly, and groove depth is 50 ~ 100mm, and groove width is 15mm, and width of rebate is 6mm.
3. Full automatic backwashing filter according to claim 1, is characterized in that: be provided with two seals circle between the external cylindrical surface of described seal ring seat and the inner cylindrical surface of cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310542709.XA CN103527371B (en) | 2013-11-06 | 2013-11-06 | Full-automatic backwash filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310542709.XA CN103527371B (en) | 2013-11-06 | 2013-11-06 | Full-automatic backwash filter |
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| Publication Number | Publication Date |
|---|---|
| CN103527371A CN103527371A (en) | 2014-01-22 |
| CN103527371B true CN103527371B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310542709.XA Active CN103527371B (en) | 2013-11-06 | 2013-11-06 | Full-automatic backwash filter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104740920A (en) * | 2015-03-11 | 2015-07-01 | 安庆东舟电器制造有限公司 | Automatic fuel oil backwashing filter for ships |
| CN108119204A (en) * | 2018-03-07 | 2018-06-05 | 湖南梓唯汽车环保有限公司 | A kind of oil filtration device assembly capable of washing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2640575Y (en) * | 2003-05-20 | 2004-09-15 | 上海森松制药设备有限公司 | Self-cleaning filter |
| KR20120114791A (en) * | 2011-04-08 | 2012-10-17 | (주)신일에이스 | Self cleaning strainer |
| CN202751864U (en) * | 2012-06-05 | 2013-02-27 | 陈太宏 | Self-cleaning filter |
| CN202946211U (en) * | 2012-11-21 | 2013-05-22 | 南京东南船舶设备有限公司 | Back flush type self-cleaning filter |
| CN203584644U (en) * | 2013-11-06 | 2014-05-07 | 安庆泰邦机械科技有限责任公司 | Fully automatic reverse flushing filter |
-
2013
- 2013-11-06 CN CN201310542709.XA patent/CN103527371B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2640575Y (en) * | 2003-05-20 | 2004-09-15 | 上海森松制药设备有限公司 | Self-cleaning filter |
| KR20120114791A (en) * | 2011-04-08 | 2012-10-17 | (주)신일에이스 | Self cleaning strainer |
| CN202751864U (en) * | 2012-06-05 | 2013-02-27 | 陈太宏 | Self-cleaning filter |
| CN202946211U (en) * | 2012-11-21 | 2013-05-22 | 南京东南船舶设备有限公司 | Back flush type self-cleaning filter |
| CN203584644U (en) * | 2013-11-06 | 2014-05-07 | 安庆泰邦机械科技有限责任公司 | Fully automatic reverse flushing filter |
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| CN103527371A (en) | 2014-01-22 |
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Effective date of registration: 20160329 Address after: 246005 3.9 square kilometers Industrial Park, Anqing economic and Technological Development Zone, Anhui Patentee after: Anqing Talent Bank Ship Technology Co., Ltd. Address before: 246005 3.9 square kilometers Industrial Park, Anqing economic and Technological Development Zone, Anhui Patentee before: Anqing Taibang Machinery Technology Co., Ltd. |