CN204610440U - Multistage return filter and pressure test device thereof - Google Patents

Multistage return filter and pressure test device thereof Download PDF

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Publication number
CN204610440U
CN204610440U CN201520283847.5U CN201520283847U CN204610440U CN 204610440 U CN204610440 U CN 204610440U CN 201520283847 U CN201520283847 U CN 201520283847U CN 204610440 U CN204610440 U CN 204610440U
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filter
return filter
pressure
filter core
return
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CN201520283847.5U
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陈立新
陈涛
喻福竞
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ARTGET FLUIDTECH (GUANGZHOU) Co Ltd
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ARTGET FLUIDTECH (GUANGZHOU) Co Ltd
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Abstract

The utility model discloses a kind of multistage return filter and pressure test device thereof, described pressure test device comprises differential pressure transmitter device, manifold block and pipeline, and the quantity of described differential pressure transmitter device is consistent with the progression of return filter; On every one-level return filter, described differential pressure transmitter device is connected to the filler opening of return filter filter core and the pipeline of oil outlet by manifold block and pipeline, for detecting the pressure of filter core filler opening and oil outlet, and comparing, sending signal when the pressure reduction of filter core reaches pressure set points.Multistage return filter of the present utility model owing to arranging pressure test device on every one-level return filter, the pressure reduction of every one-level return filter filter core can accurately be detected, the timely more renew cartridge of operator is reminded when pressure reduction is excessive, really achieve multistage oil return filter, compared to the in-line filter adopting high pressure, operate easier, cost is low, compact structure.

Description

Multistage return filter and pressure test device thereof
Technical field
The utility model relates to a kind of return filter and special purpose device thereof, especially a kind of multistage return filter and pressure test device thereof, belongs to hydraulic and lubricating system flushing of pipeline technical field.
Background technique
Conventional hydraulic system does not need multistage oil return filter function, so the return filter that can buy on the market does not now have the function of the pressure reduction that really can detect filter core upstream and downstream; And in flushing of pipeline equipment, need rapidly and efficiently by special for the pollution in fluid filtering, adopt multistage filtering to become a kind of trend.
As shown in Figure 1, fluid enters from the A mouth (filler opening) of filter core 3 return filter that hydraulic system is commonly used, and flows out from B mouth (oil outlet); The fluid entering filter core 3 is subject to the throttling generation pressure drop of filter core hole, the pressure of filter core A mouth is detected by pressure gauge 1, because the B mouth of filter core 3 directly gets back to fuel tank, and air communicates, so think that the pressure that pressure gauge 1 detects is exactly the A mouth of filter core 3 and the difference of B mouth; When wherein the effect of one-way valve 2 is excessive by the pressure reduction of filter core, fluid can pass through one-way valve 2 off-load, and protection filter core 3 can not be subject to excessive pressure reduction and puncture; If but another return filter were connected in series after the B mouth of filter core 3, and when directly not taking back fuel tank, the pressure that pressure gauge 1 now detects would not be just by the pressure reduction of filter core 3.
Known by foregoing description, because the oil outlet design of return filter directly gets back to fuel tank, communicate with air, and return filter with pressure gauge be arranged on the upstream of return filter filter core, the pressure of filter core upstream can be detected when return filter works, the pressure in downstream can be defaulted as atmospheric pressure value, so directly using input pressure value as the pressure reduction of upstream and downstream, if the oil outlet of return filter connects second level return filter or other optional equipment, and when directly not leading to air, the so-called pressure difference that pressure gauge detects just there will be mistake, be unfavorable for arranging multistage return filter.
Model utility content
The purpose of this utility model is the defect in order to solve above-mentioned prior art, provide a kind of pressure test device of multistage return filter, this pressure test device structure is simple, the real pressure reduction of every one-level return filter filter core upstream and downstream can be detected, remind the timely more renew cartridge of operator when pressure reduction is excessive.
Another object of the present utility model is to provide a kind of multistage return filter comprising above-mentioned pressure test device.
The purpose of this utility model can reach by taking following technological scheme:
The pressure test device of multistage return filter, comprises differential pressure transmitter device, manifold block and pipeline, and the quantity of described differential pressure transmitter device is consistent with the progression of return filter; On every one-level return filter, described differential pressure transmitter device is connected to the filler opening of return filter filter core and the pipeline of oil outlet by manifold block and pipeline, for detecting the pressure of filter core filler opening and oil outlet, and comparing, sending signal when the pressure reduction of filter core reaches pressure set points.
Another object of the present utility model can reach by taking following technological scheme:
Multistage return filter, comprises above-mentioned pressure test device, and the oil outlet of previous stage return filter filter core is connected with the filler opening of rear stage return filter filter core; Fluid enters from the filler opening of first order return filter filter core, after multistage filtering, get back to fuel tank by the oil outlet of afterbody return filter filter core.
Preferably, every one-level return filter is provided with one-way valve, described one-way valve is used for when the pressure reduction of return filter filter core reaches the off-load of pressure set points time control liquefaction liquid.
Preferably, described one-way valve is connected to the filler opening of return filter filter core and the pipeline of oil outlet by pipeline.
The utility model has following beneficial effect relative to prior art:
1, pressure test device of the present utility model adopt differential pressure transmitter device to be connected to the filter core upstream and downstream of return filter by manifold block and pipeline (pipeline of filter core filler opening is filter core upstream, the pipeline of filter core oil outlet is filter core downstream), pressure gauge is adopted to carry out compared with detection with traditional return filter, the real pressure reduction of filter core upstream and downstream can be detected, avoid the signal sending mistake.
2, multistage return filter of the present utility model can be arranged on fuel tank panel, owing to arranging pressure test device on every one-level return filter, the pressure reduction of every one-level return filter filter core can accurately be detected, the timely more renew cartridge of operator is reminded when pressure reduction is excessive, really achieve multistage oil return filter, compared to the in-line filter adopting high pressure, operate easier, cost is low, compact structure.
Accompanying drawing explanation
Fig. 1 is traditional return filter structural representation.
Fig. 2 is the two-stage oil return filter structure schematic representation that the utility model applies pressure test device.
In Fig. 1,1-pressure gauge, 2-one-way valve, 3-filter core.
In Fig. 2,1-first order return filter, 2-second level return filter, 3-first filter core, 4-first one-way valve, 5-second filter core, 6-second one-way valve, 7-first differential pressure transmitter device, 8-second differential pressure transmitter device.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but mode of execution of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 2, the present embodiment is for two-stage oil return filter, and described two-stage oil return filter is respectively first order return filter 1 and second level return filter 2; Described first order return filter 1 comprises the first filter core 3 and the first one-way valve 4, and described first one-way valve 4 is connected to the A1 mouth (filler opening) of the first filter core 3 and the pipeline of B1 mouth (oil outlet) by pipeline; Described second level return filter 2 comprises the second filter core 5 and the second one-way valve 6, and described second one-way valve 6 is connected to the A2 mouth (filler opening) of the second filter core 5 and the pipeline of B2 mouth (oil outlet) by pipeline; The B1 mouth of described first filter core 3 is connected with the A2 mouth of the second filter core 5; Fluid enters from the A1 mouth of the first filter core 3, after double-filtration, get back to fuel tank by the B2 mouth of the second filter core 5.
The pressure test device of the present embodiment comprises two differential pressure transmitter devices (model is CMS, and label is LEEMIN), manifold block and pipeline, and described two differential pressure transmitter devices are respectively the first differential pressure transmitter device 7 and the second differential pressure transmitter device 8;
On first order return filter 1, described first differential pressure transmitter device 7 is connected to the A1 mouth of the first filter core 3 and the pipeline of B1 mouth by manifold block and pipeline; When the A1 mouth of fluid from the first filter core 3 enters, flow out from B1 mouth, the fluid entering the first filter core 3 is subject to the throttling generation pressure drop of filter core hole, the A1 mouth of the first filter core 3 and the pressure of B1 mouth are detected simultaneously by the first differential pressure transmitter device 7 and compare, when pressure reduction reaches the pressure set points of the first differential pressure transmitter device 7, explanation pressure reduction is excessive, and the first differential pressure transmitter device 7 sends visual and electric signal, reminds operator to change the first filter core 3 in time; Owing to first order return filter 1 also having the first one-way valve 4, if operator change the first filter core 3 not in time, pressure reduction can increase further, when reaching the cracking pressure setting value of the first one-way valve 4, first one-way valve 4 is opened, fluid can pass through the first one-way valve 4 off-load, protects the first filter core 3 can not be subject to excessive pressure reduction and puncture;
In like manner, on second level return filter 2, described second differential pressure transmitter device 8 is connected to the A2 mouth of the second filter core 5 and the pipeline of B2 mouth by manifold block and pipeline, when the B1 mouth of fluid from the first filter core 3 flows out, then enter from the A2 mouth of the second filter core 5, flow out from B2 mouth, the fluid entering the second filter core 5 is subject to the throttling generation pressure drop of filter core hole, the A2 mouth of the second filter core 5 and the pressure of B2 mouth are detected simultaneously by the second differential pressure transmitter device 8 and compare, when pressure reduction reaches the pressure set points of the second differential pressure transmitter device 8, explanation pressure reduction is excessive, second differential pressure transmitter device 8 sends visual and electric signal, operator are reminded to change the second filter core 5 in time, owing to second level return filter 2 also having the second one-way valve 6, if operator change the second filter core 5 not in time, pressure reduction can increase further, when reaching the cracking pressure setting value of the second one-way valve 6, second one-way valve 6 is opened, fluid can pass through the second one-way valve 6 off-load, protects the second filter core 5 can not be subject to excessive pressure reduction and puncture.
In sum, multistage return filter of the present utility model owing to arranging pressure test device on every one-level return filter, the pressure reduction of every one-level return filter filter core can accurately be detected, the timely more renew cartridge of operator is reminded when pressure reduction is excessive, really achieve multistage oil return filter, compared to the in-line filter adopting high pressure, operate easier, cost is low, compact structure.
The above; be only the utility model preferred embodiment; but protection domain of the present utility model is not limited thereto; the return filter such as adopted can also be the return filter of three grades or more; anyly be familiar with those skilled in the art in scope disclosed in the utility model; be equal to according to the technical solution of the utility model and model utility design thereof and replace or change, all belonged to protection domain of the present utility model.

Claims (4)

1. the pressure test device of multistage return filter, is characterized in that: comprise differential pressure transmitter device, manifold block and pipeline, and the quantity of described differential pressure transmitter device is consistent with the progression of return filter; On every one-level return filter, described differential pressure transmitter device is connected to the filler opening of return filter filter core and the pipeline of oil outlet by manifold block and pipeline, for the pressure of the filler opening and oil outlet that detect return filter filter core, and compare, send signal when the pressure reduction of return filter filter core reaches pressure set points.
2. multistage return filter, is characterized in that: comprise pressure test device according to claim 1, and the oil outlet of previous stage return filter filter core is connected with the filler opening of rear stage return filter filter core; Fluid enters from the filler opening of first order return filter filter core, after multistage filtering, get back to fuel tank by the oil outlet of afterbody return filter filter core.
3. multistage return filter according to claim 2, is characterized in that: on every one-level return filter, be provided with one-way valve, and described one-way valve is used for when the pressure reduction of return filter filter core reaches the off-load of pressure set points time control liquefaction liquid.
4. multistage return filter according to claim 3, is characterized in that: described one-way valve is connected to the filler opening of return filter filter core and the pipeline of oil outlet by pipeline.
CN201520283847.5U 2015-05-04 2015-05-04 Multistage return filter and pressure test device thereof Active CN204610440U (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107246420A (en) * 2017-07-20 2017-10-13 南京讯联智能科技有限公司 It is a kind of to carry the integrated valve group of guide for blocking sender
CN109078379A (en) * 2018-09-27 2018-12-25 安庆泰邦船舶科技有限公司 A kind of fueller
CN109538580A (en) * 2019-01-24 2019-03-29 江苏徐工工程机械研究院有限公司 Hydraulic oil-returning filtration system and two-wheel flute milling machine
CN109707701A (en) * 2018-12-11 2019-05-03 上海朗畏机电科技有限公司 A kind of superposing type dual flow filter
CN112742124A (en) * 2020-12-29 2021-05-04 斯普林(佛山)环境净化科技有限公司 Self-cleaning oil mist filter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107246420A (en) * 2017-07-20 2017-10-13 南京讯联智能科技有限公司 It is a kind of to carry the integrated valve group of guide for blocking sender
CN109078379A (en) * 2018-09-27 2018-12-25 安庆泰邦船舶科技有限公司 A kind of fueller
CN109707701A (en) * 2018-12-11 2019-05-03 上海朗畏机电科技有限公司 A kind of superposing type dual flow filter
CN109538580A (en) * 2019-01-24 2019-03-29 江苏徐工工程机械研究院有限公司 Hydraulic oil-returning filtration system and two-wheel flute milling machine
CN112742124A (en) * 2020-12-29 2021-05-04 斯普林(佛山)环境净化科技有限公司 Self-cleaning oil mist filter

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