CN203516300U - Two-stage liquid filter capable of automatically converting filter drum according to hydraulic pressure - Google Patents
Two-stage liquid filter capable of automatically converting filter drum according to hydraulic pressure Download PDFInfo
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- CN203516300U CN203516300U CN201320653264.8U CN201320653264U CN203516300U CN 203516300 U CN203516300 U CN 203516300U CN 201320653264 U CN201320653264 U CN 201320653264U CN 203516300 U CN203516300 U CN 203516300U
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- filter cylinder
- level
- lower cover
- filter
- sliding sleeve
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Abstract
The utility model discloses a two-stage liquid filter capable of automatically converting a filter drum according to hydraulic pressure. The two-stage liquid filter capable of automatically converting the filter drum according to hydraulic pressure comprises an upper cover, a first-stage filter drum, a second-stage filter drum, a first-stage lower cover, a second-stage lower cover and a sliding sleeve with vertical axial direction, wherein the sliding sleeve is arranged on the second-stage lower cover, the tube wall at the middle part of the sliding sleeve is provided with a groove, a horizontal strip-type cavity is arranged in the body of the second-stage lower cover, a spring is arranged in the strip-type cavity, a ball is arranged between the spring and the groove, the ball is placed in the groove under the function of elastic force of the spring, a through hole is formed in the tube wall at the lower part of the sliding sleeve, the lower end of the sliding sleeve is provided with a seal base, a liquid inlet is formed in the center of the first-stage lower cover, a seal ring is arranged between the first-stage lower cover and the seal base, and when the ball is placed in the groove, the first-stage lower cover is sealed with the seal base. According to the two-stage liquid filter capable of automatically converting the filter drum according to hydraulic pressure, the relation between the spring pressure and the hydraulic pressure is utilized to perform automatic conversion between the first-stage filter drum and second-stage filter drum, so that the service life of the filter is prolonged.
Description
Technical field
The utility model relates to a kind of liquid filter, relates in particular to a kind ofly for the heavier preposition purified treatment of hydraulic system of liquid contamination, can automatically change according to hydraulic pressure the two-stage liquid filter of filter cylinder.
Background technique
In hydraulic system, in order to reduce the infringement of large particle medium to equipment (as oil hydraulic pump), a fore filter generally all can be installed, to filter out impurities.Such as: the impurity in fluid not only can cause the obstruction accident of fluid passage, also can accelerate the oxidation deterioration of fluid simultaneously, cause hydraulic equipment as the wear and tear overrun of the clamping stagnation of the inefficacy of oil hydraulic pump, commutation and controlling device, strength member, system rigidity reduction and other defect.
Liquid filtering is the process of separated non-dissolubility solid particle from liquid. it is under the effect of pressure difference, force liquid by porous filter medium as filter cylinder, solid particle in liquid is trapped within filter medium, thereby reaches the object of separating solids particulate from liquid.
A filter cylinder of the many employings of conventional filter, if precision is too low, purifying effect is poor, if precision is too high, affect the rate of filtration, thus be difficult to control what a most suitable precision, and easily stop up in use for some time, thereby cause hydraulic system to occur noise or creeping phenomenon, reduced the working life of hydraulic system.If adopt two filter cylinders, although can take into account filter precision and the rate of filtration, be difficult to automatically adapt to the liquid filtering of different cleanlinesss.Such as: impurity in liquid is larger and more single, hydraulic pressure is when lower, only need to use one-level filter cylinder, if use dual stage cartridge can reduce the rate of filtration; Impurity in liquid is more and not of uniform size, hydraulic pressure is when higher, needs to use dual stage cartridge, if use one-level filter cylinder, can reduce filter precision or reduce the rate of filtration.
Model utility content
The purpose of this utility model is just that in order to address the above problem, providing a kind of can change automatically according to hydraulic pressure the two-stage liquid filter of filter cylinder.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The two-stage liquid filter that can automatically change filter cylinder according to hydraulic pressure described in the utility model comprises upper cover, one-level filter cylinder, secondary filter cylinder, one-level lower cover and secondary lower cover, the center of described upper cover is provided with liquid outlet, described secondary filter cylinder is placed in described one-level filter cylinder, the upper end of the upper end of described one-level filter cylinder and described secondary filter cylinder is all connected with described upper cover, the upper end of described secondary filter cylinder communicates with the liquid outlet of described upper cover, described secondary lower cover is installed on the lower end of described secondary filter cylinder, and described one-level lower cover is installed on the lower end of described one-level filter cylinder; Described two-stage liquid filter also comprises that axial direction is the sliding sleeve of above-below direction, described sliding sleeve is installed under described secondary and covers, the middle part tube wall of described sliding sleeve is provided with a groove, in the body of described secondary lower cover, be provided with the bar shaped cavity of a substantially horizontal, in described bar shaped cavity, spring is installed, between described spring and described groove, be provided with ball, described ball is placed in described groove under the elastic force effect of described spring, and the bottom tube wall of described sliding sleeve is provided with through hole; The lower end of described sliding sleeve is provided with sealed base, and the center of described one-level lower cover is provided with inlet opening, between described one-level lower cover and described sealed base, is provided with seal ring; When described ball is placed in described groove, between described one-level lower cover and described sealed base in sealing state.
During use, if hydraulic pressure is lower, sliding sleeve makes between the sealed base of its lower end and one-level lower cover in sealing state because blocked by ball, simultaneously, liquid after one-level filter cylinder filters mainly enters in secondary filter cylinder through the through hole of sliding sleeve bottom, and enters hydraulic system by the liquid outlet of upper cover, now, what this filter used is that one-level filter cylinder filters, and when meeting filter precision, its rate of filtration is very fast, if hydraulic pressure is higher, hydraulic pressure overcomes spring force ball is moved to spring direction, and finally make ball depart from groove completely, sliding sleeve upward sliding under hydraulic pressure now, until the sealed base of its lower end is blocked by the lower end of secondary lower cover, now between sealed base and one-level lower cover in opening state, simultaneously, the through hole of sliding sleeve bottom is covered by secondary lower cover, liquid after one-level filter cylinder filters can only just can enter in secondary filter cylinder after secondary filter cylinder filters, liquid outlet by upper cover enters hydraulic system again, now, what this filter used is that the dual stage cartridge that comprises one-level filter cylinder and secondary filter cylinder is filtered, when meeting filter precision, its rate of filtration is also very fast.
As preferably, the groove of described sliding sleeve and through hole are Heterogeneous Permutation at above-below direction.Like this, after sliding sleeve upward sliding, ball can not enter in secondary filter cylinder by through hole.
Particularly, described one-level filter cylinder comprises the one-level filter screen that is provided with the one-level cylindrical shell of a plurality of through holes and is set in described one-level cylindrical shell outside, and described secondary filter cylinder comprises the secondary filter screen that is provided with the secondary cylindrical shell of a plurality of through holes and is set in described secondary cylindrical shell outside.Above-mentioned coarse filtration filter screen and essence filter filter screen are relative concepts, and the factor of the decision such as the concrete material of filter screen, aperture, overlapping number of plies filter precision is all determined according to practical application request.
The beneficial effects of the utility model are:
The utility model utilizes the relation between spring pressure and hydraulic pressure, can automatically between one-level filter cylinder and dual stage cartridge, change, thereby extended filter life, reduce the probability that hydraulic system breaks down, be specially adapted to hydraulic station far, the occasion of renew cartridge inconvenience more, this filter also can carry out the expansion of more multistage filter cylinder according to same principle, make its adaptability stronger.
Accompanying drawing explanation
Fig. 1 described in the utility modelly can change according to hydraulic pressure the sectional structure schematic diagram of the two-stage liquid filter of filter cylinder automatically.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the two-stage liquid filter that can automatically change filter cylinder according to hydraulic pressure described in the utility model comprises upper cover 2, one-level filter cylinder, secondary filter cylinder, one-level lower cover 10, secondary lower cover 8 and axial direction are the sliding sleeve 7 of above-below direction, the center of upper cover 2 is provided with liquid outlet 1, described one-level filter cylinder comprises the one-level cylindrical shell 3 that is provided with a plurality of through holes and the one-level filter screen 4 that is set in one-level cylindrical shell 3 outsides, described secondary filter cylinder comprises the secondary cylindrical shell 5 that is provided with a plurality of through holes and the secondary filter screen 6 that is set in secondary cylindrical shell 5 outsides, secondary filter cylinder is placed in one-level filter cylinder, the upper end of the upper end of one-level filter cylinder and secondary filter cylinder is all connected with upper cover 2, the upper end of secondary filter cylinder communicates with the liquid outlet 1 of upper cover 2, secondary lower cover 8 is installed on the lower end of secondary filter cylinder, one-level lower cover 10 is installed on the lower end of one-level filter cylinder, sliding sleeve 7 is installed on secondary lower cover 8, the middle part tube wall of sliding sleeve 7 is provided with a groove 14, in the body of secondary lower cover 8, be provided with the bar shaped cavity 17 of a substantially horizontal, spring 16 is installed in bar shaped cavity 17, between spring 16 and groove 14, be provided with ball 15, ball 15 is placed in groove 14 under the elastic force effect of spring 16, the bottom tube wall of sliding sleeve 7 is provided with through hole 12, the groove 14 of sliding sleeve 7 and through hole 12 are that Heterogeneous Permutation is (in figure for the ease of representing at above-below direction, for arranging side by side up and down, reality is Heterogeneous Permutation), the lower end of sliding sleeve 7 is provided with sealed base 9, and one-level lower cover 10 center is provided with inlet opening 13, between one-level lower cover 10 and sealed base 9, is provided with seal ring 11, ball 15 is placed in groove 14 when interior, between one-level lower cover 10 and sealed base 9 in sealing state.
As shown in Figure 1, during use, by upper cover 2 with the liquid feeding end of hydraulic system as the liquid feeding end of oil hydraulic pump is connected, this filter is placed in to liquid to be filtered, after primer fluid pressing system, if hydraulic pressure is lower, sliding sleeve 7 makes because blocked by ball 15 between the sealed base 9 of its lower end and one-level lower cover 10 in sealing state, simultaneously, liquid after one-level filter cylinder filters mainly enters in secondary filter cylinder through the through hole 12 of sliding sleeve 7 bottoms, and enters hydraulic system by the liquid outlet 1 of upper cover 2, now, what this filter used is that one-level filter cylinder filters, and when meeting filter precision, its rate of filtration is very fast, if hydraulic pressure is higher, the elastic force that hydraulic pressure overcomes spring 16 makes ball 15 move to spring 16 directions, and finally make ball 15 depart from groove 14 completely, sliding sleeve 7 upward sliding under hydraulic pressure now, until the sealed base 9 of its lower end is blocked by the lower end of secondary lower cover 8, now between sealed base 9 and one-level lower cover 10 in opening state, simultaneously, the through hole 12 of sliding sleeve 7 bottoms is covered by secondary lower cover 8, liquid after one-level filter cylinder filters can only just can enter in secondary filter cylinder after secondary filter cylinder filters, liquid outlet 1 by upper cover 2 enters hydraulic system again, now, what this filter used is that the dual stage cartridge that comprises one-level filter cylinder and secondary filter cylinder is filtered, when meeting filter precision, its rate of filtration is also very fast.
Claims (3)
1. an energy is changed the two-stage liquid filter of filter cylinder automatically according to hydraulic pressure, comprise upper cover, one-level filter cylinder, secondary filter cylinder, one-level lower cover and secondary lower cover, the center of described upper cover is provided with liquid outlet, described secondary filter cylinder is placed in described one-level filter cylinder, the upper end of the upper end of described one-level filter cylinder and described secondary filter cylinder is all connected with described upper cover, the upper end of described secondary filter cylinder communicates with the liquid outlet of described upper cover, described secondary lower cover is installed on the lower end of described secondary filter cylinder, and described one-level lower cover is installed on the lower end of described one-level filter cylinder; It is characterized in that: described two-stage liquid filter also comprises that axial direction is the sliding sleeve of above-below direction, described sliding sleeve is installed under described secondary and covers, the middle part tube wall of described sliding sleeve is provided with a groove, in the body of described secondary lower cover, be provided with the bar shaped cavity of a substantially horizontal, in described bar shaped cavity, spring is installed, between described spring and described groove, be provided with ball, described ball is placed in described groove under the elastic force effect of described spring, and the bottom tube wall of described sliding sleeve is provided with through hole; The lower end of described sliding sleeve is provided with sealed base, and the center of described one-level lower cover is provided with inlet opening, between described one-level lower cover and described sealed base, is provided with seal ring; When described ball is placed in described groove, between described one-level lower cover and described sealed base in sealing state.
2. according to claim 1ly can according to hydraulic pressure, automatically change the two-stage liquid filter of filter cylinder, it is characterized in that: the groove of described sliding sleeve and through hole are Heterogeneous Permutation at above-below direction.
3. according to claim 1ly can automatically change according to hydraulic pressure the two-stage liquid filter of filter cylinder, it is characterized in that: described one-level filter cylinder comprises the one-level filter screen that is provided with the one-level cylindrical shell of a plurality of through holes and is set in described one-level cylindrical shell outside, described secondary filter cylinder comprises the secondary filter screen that is provided with the secondary cylindrical shell of a plurality of through holes and is set in described secondary cylindrical shell outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653264.8U CN203516300U (en) | 2013-10-22 | 2013-10-22 | Two-stage liquid filter capable of automatically converting filter drum according to hydraulic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653264.8U CN203516300U (en) | 2013-10-22 | 2013-10-22 | Two-stage liquid filter capable of automatically converting filter drum according to hydraulic pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516300U true CN203516300U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320653264.8U Expired - Fee Related CN203516300U (en) | 2013-10-22 | 2013-10-22 | Two-stage liquid filter capable of automatically converting filter drum according to hydraulic pressure |
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| Country | Link |
|---|---|
| CN (1) | CN203516300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117249153A (en) * | 2023-10-10 | 2023-12-19 | 德州市力强液压机具有限公司 | Hydraulic oil filter equipment for hydraulic equipment |
-
2013
- 2013-10-22 CN CN201320653264.8U patent/CN203516300U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117249153A (en) * | 2023-10-10 | 2023-12-19 | 德州市力强液压机具有限公司 | Hydraulic oil filter equipment for hydraulic equipment |
| CN117249153B (en) * | 2023-10-10 | 2024-04-02 | 沂水冠元液压机械有限公司 | Hydraulic oil filter equipment for hydraulic equipment |
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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: 20140402 Termination date: 20141022 |
|
| EXPY | Termination of patent right or utility model |