CN201848148U - Return oil filter - Google Patents
Return oil filter Download PDFInfo
- Publication number
- CN201848148U CN201848148U CN2010206156519U CN201020615651U CN201848148U CN 201848148 U CN201848148 U CN 201848148U CN 2010206156519 U CN2010206156519 U CN 2010206156519U CN 201020615651 U CN201020615651 U CN 201020615651U CN 201848148 U CN201848148 U CN 201848148U
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- CN
- China
- Prior art keywords
- oil
- filter
- screen pack
- utility
- overflow valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Filtration Of Liquid (AREA)
Abstract
The utility model provides a return oil filter which comprises a shell, a filtering valve core and a safe overflow valve, wherein the shell is provided with an oil inlet and an oil outlet; the filtering valve core has a barrel-shaped structure with an opening at one end and is arranged in the shell; the wall body of the filtering valve core is provided with more than two channels; one ends of the channels are communicated with the oil inlet by a gap between the filtering valve core and the shell, and the other ends of the channels are communicated with the oil outlet by the opening; the channels are respectively provided with more than two layers of filter screens; the safe overflow valve is arranged on the shell; and an oil way of the safe overflow valve is connected with the oil inlet. The filtering valve core is provided with the more than two channels which adopt the more than two layers of filter screens, so that the filtering area of return oil can be enlarged, and of the filter is effectively prevented from being blocked; in addition, the safe overflow valve can be used for over pressurization protection when meshes of the filter screens are blocked, so that a whole hydraulic system is protected.
Description
Technical field
The utility model relates to hydraulic system, particularly oil-returning filtering device in the hydraulic system.
Background technology
At present, in hydraulic system,, generally on the oil return pipeline, return filter is housed for guaranteeing the cleannes of hydraulic oil in the fuel tank.But traditional return filter is the filter effect that reaches accurate, and the screen pack mesh of employing is less, is easy to stop up.In addition, because traditional screen pack resistance to pressure is relatively poor, usually damaged easily when mesh stops up.At last, stop up when serious,, be easy to other original papers of impact filter and hydraulic system, especially in high-pressure hydraulic, be easy to cause big destruction, produce immeasurable loss owing in return filter, lack hydraulic protecting at the screen pack mesh.
The utility model content
The technical problems to be solved in the utility model provides a kind ofly to be had durable screen pack and can improve filtration reliability and have the return filter of security protection.
In order to address the above problem, the utility model provides a kind of return filter, comprising:
Housing, described housing is provided with oil-in and oil-out;
Filter spool, described filtration spool is the barrel-like structure that an end has opening, be arranged in the described housing, described filtration spool wall body is provided with two with upper channel, described passage one end is communicated with described oil-in by space between described filtration spool and the described housing, the other end is by the described oil-out of described open communication, and described passage is provided with two-layer above screen pack;
Safety overflow valve, described safety overflow valve are arranged on the described housing, and described safety overflow valve oil circuit links to each other with described oil-in.
Further, described screen pack two ends are provided with clamping stirrup, and described screen pack is fixed on the wall body of the corresponding described passage of described filtration spool by described clamping stirrup.
Further, described screen pack is a metal filter screen.
The utlity model has following advantage:
1, the utility model adopts two with upper channel on the filtration spool; on passage, adopt two-layer above screen pack; can increase the filter area of oil return; effectively prevent the generation of stopping up; adopt safety overflow valve in addition; can when the screen pack mesh stops up, carry out overvoltage protection, thereby protect whole hydraulic system.
2, the utility model adopts fixedly screen pack of clamping stirrup, and screen pack can be provided with multilayer, and every layer of mesh can appropriateness strengthen, and can reach the fine mesh filter effect after the stack, stops up but each screen pack is difficult, thereby improves the reliability that the utility model uses.
3, the utility model adopts metal filter screen, because metal filter screen has stronger resistance to impact, is difficult for being damaged, and has improved service life of the present utility model.
4, the utility model is simple in structure, is convenient to manufacture, and cost of manufacture is cheap, and result of use is good reliable, is suitable for and promotes the use of.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Fig. 1 shows a kind of return filter structural representation of the utility model;
Fig. 2 shows strainer valve cored structure schematic diagram in a kind of return filter of the utility model;
Fig. 3 shows clamping stirrup structural representation in a kind of return filter of the utility model.
The specific embodiment
As shown in Figure 1-Figure 3, the utility model comprises housing 1, filters spool 2 and safety overflow valve 3.Housing 1 is support of the present utility model, and as asphalt channel; Filter spool 2 and be used to filter oil return, avoid contaminated oil to damage hydraulic pressure original papers such as hydraulic pump; Safety overflow valve 3 is the utility model safety device, for the utility model provides overvoltage protection.
Housing 1 is provided with oil-in 11 and oil-out 12, and this oil-in 11 is communicated with by oil circuit in the housing 1 with oil-out 12.In actual use, oil-in 11 connects oil return pipe as required, and oil-out 12 connects fuel tank.This housing 1 and oil-in 11, oil-out 12 all need be provided with hermetically-sealed construction.
Filtering spool 2 is the barrel-like structure that an end has opening 21, is arranged in the housing 1.Filter spool 2 wall bodies and be provided with two with upper channel 22, passage 22 quantity can determine according to actual needs, and need be symmetrical arranged usually, with equalizing pressure.The space is communicated with oil-in 11 to passage 22 1 ends between spool 2 and the housing 1 by filtering, and the other end is by opening 21 connection oil-outs 12, thus the formation filtration channel.This passage 22 is provided with two-layer above screen pack 23, and to be used to filter the fluid through this passage 22, the number of plies of screen pack 23 and width of mesh are determined according to actual needs.
Safety overflow valve 3 is arranged on the housing 1, and safety overflow valve 3 oil circuits link to each other with oil-in 11.When screen pack 23 took place to stop up, when oil liquid pressure reached setting value, the fluid that enters housing 1 by oil-in 11 was discharged by this safety overflow valve 3.
The utility model adopts two with upper channel 22 on filtration spool 2; on passage 22, adopt two-layer above screen pack 23; can increase the filter area of oil return; effectively prevent the generation of stopping up; adopt safety overflow valve 3 in addition; can when screen pack 23 meshes stop up, carry out overvoltage protection, thereby protect whole hydraulic system.
In the utility model, screen pack 23 two ends are provided with clamping stirrup 24, and screen pack 23 is fixed on the wall body that filters spool 2 respective channel 22 by clamping stirrup 24.
The utility model adopts fixedly screen pack 23 of clamping stirrup 24, screen pack 23 can be provided with multilayer, and every layer of mesh can appropriateness strengthen, and can reach the fine mesh filter effect after the stack, but each screen pack 23 is difficult for stopping up, thereby improves the reliability that the utility model uses.
In the utility model, screen pack 23 is a metal filter screen.The utility model adopts metal filter screen, because metal filter screen has stronger resistance to impact, is difficult for being damaged, and has improved service life of the present utility model.
The utility model is simple in structure, is convenient to manufacture, and cost of manufacture is cheap, and result of use is good reliable, is suitable for and promotes the use of.
In sum; it below only is preferred embodiment of the present utility model; be not to be used to limit protection domain of the present utility model; therefore; all any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. a return filter is characterized in that, comprising:
Housing, described housing is provided with oil-in and oil-out;
Filter spool, described filtration spool is the barrel-like structure that an end has opening, be arranged in the described housing, described filtration spool wall body is provided with two with upper channel, described passage one end is communicated with described oil-in by space between described filtration spool and the described housing, the other end is by the described oil-out of described open communication, and described passage is provided with two-layer above screen pack;
Safety overflow valve, described safety overflow valve are arranged on the described housing, and described safety overflow valve oil circuit links to each other with described oil-in.
2. return filter as claimed in claim 1 is characterized in that: described screen pack two ends are provided with clamping stirrup, and described screen pack is fixed on the wall body of the corresponding described passage of described filtration spool by described clamping stirrup.
3. return filter as claimed in claim 2 is characterized in that: described screen pack is a metal filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206156519U CN201848148U (en) | 2010-11-19 | 2010-11-19 | Return oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206156519U CN201848148U (en) | 2010-11-19 | 2010-11-19 | Return oil filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201848148U true CN201848148U (en) | 2011-06-01 |
Family
ID=44090563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206156519U Expired - Fee Related CN201848148U (en) | 2010-11-19 | 2010-11-19 | Return oil filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201848148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889465A (en) * | 2012-10-26 | 2013-01-23 | 江苏智源科技创业园有限公司 | Dry oil filter |
| CN106215478A (en) * | 2016-08-24 | 2016-12-14 | 常州市江浪铸造有限公司 | Disc type copper pipe filter |
-
2010
- 2010-11-19 CN CN2010206156519U patent/CN201848148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889465A (en) * | 2012-10-26 | 2013-01-23 | 江苏智源科技创业园有限公司 | Dry oil filter |
| CN106215478A (en) * | 2016-08-24 | 2016-12-14 | 常州市江浪铸造有限公司 | Disc type copper pipe filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20181119 |