CN202867428U - Hydraulic filter - Google Patents
Hydraulic filter Download PDFInfo
- Publication number
- CN202867428U CN202867428U CN 201220540458 CN201220540458U CN202867428U CN 202867428 U CN202867428 U CN 202867428U CN 201220540458 CN201220540458 CN 201220540458 CN 201220540458 U CN201220540458 U CN 201220540458U CN 202867428 U CN202867428 U CN 202867428U
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- Prior art keywords
- filter screen
- filter
- oil
- housing
- guide pipe
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- Expired - Fee Related
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Abstract
The utility model provides a hydraulic filter which comprises a shell body (8), wherein the upper end of the shell body (8) is connected with a top cover (1) with an oil inlet pipe (5), and an oil outlet pipe (11) is arranged at the lower end or the bottom of the shell body (8). The hydraulic filter is characterized in that an oil conduit (9) is arranged inside the shell body (8), a spiral-shaped filter screen (15) is arranged in the oil conduit (9), and the spiral-shaped filter screen (15) corresponds to the position of an oil outlet of the oil conduit (9). The upper end of the oil conduit (9) is connected with the top cover (1) and the shell body (8), a bottom filtering component (10) is arranged between the lower end of the oil conduit (9) and the bottom of the shell body (8), and the bottom filtering component (10) is communicated with the oil outlet pipe (11). The hydraulic filter has the advantages of being good in filtering effect, high in air elimination factor of oil liquid, convenient to clean, long in service life, and small in size of oil tank.
Description
Technical field
The present invention relates to hydraulic filter, especially comprise housing, housing upper end links to each other with top cover with oil inlet pipe, and the housing lower end is provided with oil outlet tube.
Background technique
Generally speaking, 75% hydraulic system fault causes owing to fluid is contaminated, so hydraulic system is high to the turbidity test requirement of fluid, especially Hydrauservo System requires higher to cleanliness of hydraulic oil.So must filter hydraulic system, get rid of pollutant and gas in the fluid.The employed return filter of existing hydraulic system, its complex structure, inconvenience is cleaned, and generally is to be single layer filter take renew cartridge more as main during cleaning, and its filter efficiency is low, and can not remove gas.For ease of the pollutant in the fluid and air are further removed, existing fuel tank can only pass through enlarging volume, fluid flowing time in fuel tank is prolonged, thereby make deposition of dirt and bubble floating, oil-tank filtering and the exhaust effect of this non-imposed removal dirt and gas are poor.
In sum, there are the following problems for existing filter: filter is single layer filter only, and filtering effect is not obvious, can not effectively get rid of the gas in the fluid, the filter element cleaning difficulty.
Summary of the invention
The problem to be solved in the present invention provides a kind of hydraulic filter, and filtering effect is better, more convenient, the longer service life of cleaning.
For solving the problems of the technologies described above, hydraulic filter of the present invention comprises housing, housing upper end links to each other with top cover with oil inlet pipe, lower end or the bottom of housing are provided with oil outlet tube, enclosure interior is provided with oil guide pipe, be provided with the helical filter screen in the oil guide pipe, and the helical filter screen is corresponding with the position of the oil outlet of oil inlet pipe; The upper end of oil guide pipe links to each other with housing with top cover, be provided with the bottom filter assemblies between the lower end of oil guide pipe and the bottom of housing, and the bottom filter assemblies is connected with oil outlet tube.
In technique scheme, the present invention is provided with the helical filter screen in oil guide pipe after, make fluid accelerate to flow downward along the oil guide pipe spirality, the dirt in the fluid is dirty in cylindrical at centrifugal action, and final treated cleaning fluid flows out by oil outlet; Simultaneously, because filter screen is helicoidal structure, fluid is the equal of through multiple filtration in the process that moves downward, can the Effective Raise filtering effect.
Further, be provided with in the heart the outlet pipe that is connected with the bottom of oil guide pipe in the described oil guide pipe, the top of outlet pipe passes top cover, is provided with the helical filter screen between outlet pipe and the oil guide pipe.Be provided with outlet pipe in oil guide pipe after, fluid is in the process that moves downward, and the gas in the fluid is then concentrated the outlet pipe center that flows to, and then discharge by outlet pipe, thereby realize forcibly removing gas, and it gets rid of higher, the better effects if of efficient of gas.
Further, for inner edge and stable being separately fixed on outlet pipe and the oil guide pipe of outer rim energy that makes the helical filter screen, taked following several structure: the outer wall of described outlet pipe is provided with the first filter screen skeleton, and the first filter screen skeleton links to each other with the inner edge of helical filter screen; The outer wall of described outlet pipe is provided with the first filter screen skeleton, the inwall of described oil guide pipe is provided with the second filter screen skeleton, the first filter screen skeleton and/or the second filter screen skeleton are the alternatively up and down setting, and helical filter screen (15) is connected between the first filter screen skeleton (13) and the second filter screen skeleton (14); The first filter screen skeleton links to each other with the inner edge of helical filter screen; The second filter screen skeleton links to each other with the outer rim of helical filter screen.
Further, for described the first filter screen skeleton and/or the second filter screen skeleton can be separately fixed on outlet pipe and/or the oil guide pipe: the second filter screen skeleton (14) links to each other with the outer rim of helical filter screen (15); Described the second filter screen skeleton (14) is provided with seal groove (20), is provided with sealing strip (16) in the seal groove (20), and on the spiral inwall that is fixed on oil guide pipe (9) of sealing strip (16).
Further, for the first filter screen skeleton and/or the second filter screen skeleton can better be fixed on outlet pipe and/or the oil guide pipe: described the first filter screen skeleton (13) is fixedly linked with the inner edge of helical filter screen (15).
Further, for the structure that makes oil inlet pipe more reasonable, make simultaneously the initial flow rate that flows to the fluid on the helical filter screen suitable, described oil inlet pipe is " L " shape, the filler opening section of oil inlet pipe and the angle of oil outlet section are 90～95 °, and the oil outlet section center line of oil inlet pipe and horizontal plane angle in the counterclockwise direction are 0～5 °.
Further, the present invention improves the bottom filter assemblies, and described bottom filter assemblies comprises bottom filtration housing, filter screen and press strip; Bottom filtration housing is cylinder, cuboid, round platform or the combination between them with through hole, and is provided with equably four logical hydraulic fluid ports on its cylndrical surface; The inwall top and bottom that housing is filtered in the bottom are equipped with press strip, closely are connected with filter screen between two press strips, and filter screen is close on the inwall of bottom filtration housing.
Further, do not waste when flowing downward in order to make fluid, the internal diameter of housing is filtered more than or equal to the internal diameter of oil guide pipe bottom surface in the bottom.
Description of drawings
Fig. 1 is the structural representation of hydraulic filter of the present invention.
Fig. 2 is the local enlarged diagram of I among Fig. 1.
Fig. 3 is the local enlarged diagram of II among Fig. 1.
Fig. 4 is the structural representation of the present invention bottom filter assemblies.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing: as shown in Figure 1, hydraulic filter of the present invention comprises housing 8, and the upper end of housing 8 links to each other with top cover 1 with oil inlet pipe 5 and signal-transmitting machine 2, and the housing lower end is provided with oil outlet tube 11.The top of outlet pipe 3 passes from the center of top cover 1.The top and bottom of oil guide pipe 9 are equipped with flange, are provided with outlet pipe 3 and helical filter screen 15 that top 3.1 passes from the center 1.1 of top cover 1 in the oil guide pipe 9; The upper end of oil guide pipe 9 links to each other with housing 8 with top cover 1, be provided with bottom filter assemblies 10 between the bottom of the lower end of oil guide pipe 9 and housing 8, and bottom filter assemblies 10 is connected with oil outlet tube 11; The inner edge of helical filter screen 15 is fixedly connected with the outer wall of outlet pipe 3, and the outer rim of helical filter screen 15 is fixedly connected with the inwall of oil guide pipe 9, and the distance of the lower plane of bottom filter assemblies 10 and housing 8 bottom surfaces is 10～30mm.
The inner edge of helical filter screen 15 as shown in figures 1 and 3, helical filter screen inner edge and the first filter screen 13 are fixedly linked, the first filter screen 13 is welded on the outer wall of outlet pipe 3 in the shape of a spiral, the outer rim of helical filter screen 15 as depicted in figs. 1 and 2, its outer rim and the second filter screen skeleton 14 are fixedly linked, and the outside of the second filter screen skeleton 14 has seal groove 20, and sealing strip 16 is housed in the seal groove 20, outlet pipe 3 is inserted in the oil guide pipe 9 concentrically, and sealing strip 16 is close to oil guide pipe 9 inwalls in the shape of a spiral; The above-mentioned mode that is fixedly linked can be for welding and riveted joint, wherein to be welded as the best.
Be provided with in the heart the outlet pipe 3 that is connected with the bottom of oil guide pipe 9 in the described oil guide pipe 9, the top of outlet pipe 3 passes top cover 1.After in oil guide pipe 9, being provided with outlet pipe 3, fluid is in the process that moves downward, and the gas in the fluid is then concentrated outlet pipe 3 centers that flow to, and then discharges by outlet pipe 3, thereby realize forcibly removing gas, and it gets rid of higher, the better effects if of efficient of gas.
As shown in Figure 1 to Figure 3, for inner edge and stable being separately fixed on outlet pipe 3 and the oil guide pipe 9 of outer rim energy that makes helical filter screen 15, taked following several structure: the outer wall of described outlet pipe 3 is provided with the first filter screen skeleton 13, the first filter screen skeletons 13 and links to each other with the inner edge of helical filter screen 15; The inwall of described oil guide pipe 9 is provided with the second filter screen skeleton 14, the second filter screen skeletons 14 and links to each other with the outer rim of helical filter screen 15; The first filter screen skeleton 13 links to each other with the inner edge of helical filter screen 15; The second filter screen skeleton 14 links to each other with the outer rim of helical filter screen 15.
Described the first filter screen skeleton 13 is provided with seal groove 20, and 20 are provided with sealing strip 16 in the seal groove, and sealing strip 16 is fixed on the outer wall of outlet pipe 3; The second filter screen skeleton 14 is provided with seal groove 20, is provided with sealing strip 16 in the seal groove 20, and sealing strip 16 is fixed on the inwall of oil guide pipe 9.
Described the first filter screen skeleton 13 and/or the second filter screen skeleton 14 are helical, and the first filter screen skeleton 13 and/or the sealing strip 16 on the second filter screen skeleton 14 that are for helical arrangement also are helical.
The first filter screen skeleton 13 and the second filter screen skeleton 14 can not be helicoidal structure also for helicoidal structure as can be known by the structure of above-mentioned helical filter screen 15, the first filter screen skeleton 13, the second filter screen skeleton 14 and sealing strip 16, but when the first filter screen skeleton 13 and/or the second filter screen skeleton 14 when also being connected with sealing strip 16 on helicoidal structure and its, then sealing strip 16 must be helicoidal structure.
Be provided with the first planar seal ring 6 between oil guide pipe 9 upper flanges and the top cover 1; Be provided with the second planar seal ring 7 between oil guide pipe 9 upper flanges and housing 8 upper flanges; Be provided with the 3rd planar seal ring 12 between the flange of the flange of oil guide pipe 9 lower ends and bottom filter assemblies 10 upper ends; " O " RunddichtringO 4 between the exhaust duct aperture of top cover 1 and the outlet pipe 3, described oil guide pipe 9 materials are corrosion resistant plate.
The latus rectum of described oil inlet pipe 5 is 15～100mm, oil inlet pipe 5 is " L " shape, " L " shape oil inlet pipe can be considered by two sections and consists of, one section of filler opening is filler opening section 5.1, one section of oil outlet is oil outlet section 5.2, oil outlet section 5.2 center lines and the horizontal plane angle in the counterclockwise direction of oil inlet pipe are 0～5 °, the filler opening section of oil inlet pipe 5 and the angle of oil outlet section are 90～95 °, vertical guide wherein refers to the formed plane of center line of filler opening section center line and the outlet pipe 3 of oil inlet pipe 5, namely when hydraulic filter be not the mode shown in Fig. 1 when placing, then the position of vertical guide also just changes accordingly.
Described bottom filter assemblies 10 is as shown in Figure 4: comprise that the bottom filters housing 17, filter screen 18 and press strip 19; It is the cylindric of hollow that housing 17 is filtered in the bottom, and the upper end that housing 17 is filtered in the bottom is provided with flange, and the cylndrical surface that housing 17 is filtered in the bottom has four logical hydraulic fluid ports equably; Filter screen 18 is close to the inwall that housing 17 is filtered in the bottom, and the top and bottom of filter screen 18 are pressed on the upper and lower that housing 17 inwalls are filtered in the bottom by press strip 19 respectively, and press strip 19 is fixed by screws in the inwall that housing 17 is filtered in the bottom; The internal diameter of housing 17 is filtered more than or equal to the internal diameter of oil guide pipe 9 bottom surfaces in the bottom.。
In technique scheme, oil guide pipe 8 can or be the prismatic oil guide pipe of hollow for the cylindrical shape oil guide pipe, and oil guide pipe 9 can be for conical or prismatic, and press strip 19 can be the setting at ring-type or interval, and filter screen 18 can be tubulose or netted.In the practical work process, the fluid that contains dirt and gas in the hydraulic system enters oil guide pipe 9 inside after work, fluid accelerates to flow downward along oil guide pipe 9 spirality, and the dirt in the fluid is dirty in cylindrical at centrifugal action, and final treated cleaning fluid flows out by oil outlet tube 11.
At first, the stainless steel Round Steel Wire outside of the second filter screen skeleton 14 of the present invention has seal groove 20, sealing strip 16 is housed in the groove, the element kit that forms when parts such as outlet pipe 3, the first filter screen 13, helical filter screen 15, the second filter screen skeleton 14 and sealing strips 16 is inserted oil guide pipe 9 when interior from the top, under the element kit action of gravitation, make sealing strip 16 be close to oil guide pipe 9 inwalls, seal.When filter screen is obstructed to a certain degree, at this moment 2 signals of signal-transmitting machine, can open top cover 1, take out filter core and clean or change, and the cleaning filter core after cleaning or changing can again be packed into and be used in this filter.
In addition, the present invention can play the double action of removing pollutant and reducing the gas in the fluid, has not only dwindled the fuel tank volume, and has reduced the operating cost of hydraulic system.Because filter screen is helicoidal structure, is equivalent to multiple filtration, energy Effective Raise filtering effect; Gas in the fluid is then concentrated the center that flows to, and discharges by outlet pipe 3.Thereby realize forcibly removing gas, greatly be better than the method that freely floats to get rid of gas by gas in the oil in the fuel tank.Simultaneously, filter core easy accessibility of the present invention, it is convenient to clean filter core.
Therefore, hydraulic filter of the present invention has that filtering effect is better, the air elimination factor in the fluid is higher, it is more convenient to clean, longer service life and the less advantage of fuel tank volume.
Claims (9)
1. hydraulic filter, comprise housing (8), housing (8) upper end links to each other with top cover (1) with oil inlet pipe (5), the lower end of housing (8) or bottom are provided with oil outlet tube (11), it is characterized in that: housing (8) inside is provided with oil guide pipe (9), be provided with helical filter screen (15) in the oil guide pipe (9), and helical filter screen (15) is corresponding with the position of the oil outlet of oil inlet pipe (5); The upper end of oil guide pipe (9) links to each other with housing (8) with top cover (1), be provided with bottom filter assemblies (10) between the bottom of the lower end of oil guide pipe (9) and housing (8), and bottom filter assemblies (10) is connected with oil outlet tube (11).
2. hydraulic filter as claimed in claim 1, it is characterized in that: be provided with in the heart the outlet pipe (3) that is connected with the bottom of oil guide pipe (9) in the described oil guide pipe (9), the top of outlet pipe (3) passes top cover (1), is provided with helical filter screen (15) between outlet pipe (3) and the oil guide pipe (9).
3. hydraulic filter as claimed in claim 2, it is characterized in that: the outer wall of described outlet pipe (3) is provided with the first filter screen skeleton (13), the inwall of described oil guide pipe (9) is provided with the second filter screen skeleton (14), the first filter screen skeleton (13) and/or the second filter screen skeleton (14) are the alternatively up and down setting, and helical filter screen (15) is connected between the first filter screen skeleton (13) and the second filter screen skeleton (14).
4. hydraulic filter as claimed in claim 3, it is characterized in that: the second filter screen skeleton (14) links to each other with the outer rim of helical filter screen (15).
5. hydraulic filter as claimed in claim 4, it is characterized in that: described the second filter screen skeleton (14) is provided with seal groove (20), be provided with sealing strip (16) in the seal groove (20), and on the spiral inwall that is fixed on oil guide pipe (9) of sealing strip (16).
6. hydraulic filter as claimed in claim 3 is characterized in that: described the first filter screen skeleton (13) is fixedly linked with the inner edge of helical filter screen (15).
7. hydraulic filter as claimed in claim 1, it is characterized in that: described oil inlet pipe (5) is " L " shape, and oil outlet section (5.2) center line and the horizontal plane angle in the counterclockwise direction of oil inlet pipe are 0～5 °.
8. hydraulic filter as claimed in claim 1 is characterized in that: filter housing (17), filter screen (18) and press strip (19) bottom described bottom filter assemblies (10) comprises; Bottom filtration housing (17) is cylinder, cuboid, round platform or the combination between them with through hole, and has equably four logical hydraulic fluid ports on its cylndrical surface; The inwall top and bottom that housing (17) is filtered in the bottom are equipped with press strip (19), closely are connected with filter screen (18) between two press strips (19), and filter screen (18) is close on the inwall of bottom filtration housing (17).
9. hydraulic filter as claimed in claim 5 is characterized in that: the through-hole diameter of housing (17) is filtered more than or equal to the internal diameter of the bottom surface of oil guide pipe (9) in the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540458 CN202867428U (en) | 2012-10-22 | 2012-10-22 | Hydraulic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540458 CN202867428U (en) | 2012-10-22 | 2012-10-22 | Hydraulic filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867428U true CN202867428U (en) | 2013-04-10 |
Family
ID=48034151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220540458 Expired - Fee Related CN202867428U (en) | 2012-10-22 | 2012-10-22 | Hydraulic filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867428U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351286A (en) * | 2015-12-01 | 2016-02-24 | 攀枝花钢城集团瑞钢工业有限公司 | Filter unit applied to plug-pull type hydraulic system |
| CN106762869A (en) * | 2016-12-27 | 2017-05-31 | 重庆优萃科技有限公司 | Breather for hydraulic oil tank spiral separating device |
| CN106762867A (en) * | 2016-12-27 | 2017-05-31 | 重庆优萃科技有限公司 | Breather for hydraulic oil tank |
| CN107387505A (en) * | 2017-09-10 | 2017-11-24 | 英立（江苏）机电有限公司 | A kind of efficient hydraulic filter |
-
2012
- 2012-10-22 CN CN 201220540458 patent/CN202867428U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351286A (en) * | 2015-12-01 | 2016-02-24 | 攀枝花钢城集团瑞钢工业有限公司 | Filter unit applied to plug-pull type hydraulic system |
| CN106762869A (en) * | 2016-12-27 | 2017-05-31 | 重庆优萃科技有限公司 | Breather for hydraulic oil tank spiral separating device |
| CN106762867A (en) * | 2016-12-27 | 2017-05-31 | 重庆优萃科技有限公司 | Breather for hydraulic oil tank |
| CN106762867B (en) * | 2016-12-27 | 2018-10-26 | 南京清泽田工程机械有限公司 | Breather for hydraulic oil tank |
| CN107387505A (en) * | 2017-09-10 | 2017-11-24 | 英立（江苏）机电有限公司 | A kind of efficient hydraulic 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 |
Granted publication date: 20130410 Termination date: 20171022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |