CN216867173U - Filter assembly, hydraulic system and operation machine - Google Patents
Filter assembly, hydraulic system and operation machine Download PDFInfo
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- CN216867173U CN216867173U CN202220133137.4U CN202220133137U CN216867173U CN 216867173 U CN216867173 U CN 216867173U CN 202220133137 U CN202220133137 U CN 202220133137U CN 216867173 U CN216867173 U CN 216867173U
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Abstract
The utility model relates to the technical field of hydraulic systems of engineering machinery, and provides a filtering assembly, a hydraulic system and an operating machine, which comprise an oil absorption filter and a switch valve, wherein the oil absorption filter is arranged at the outer side of an oil tank, and is provided with an oil outlet interface which is used for being communicated with a hydraulic pump of the hydraulic system; the switch valve is arranged between an oil outlet of the oil tank and an oil inlet of the oil absorption filter. The oil outlet port is arranged on the oil absorption filter and is communicated with a hydraulic pump of a hydraulic system, so that oil is supplied to the whole hydraulic system, the pipeline is optimized, the structure of the hydraulic system is simplified, the cleanliness of an oil way is improved, and the reliability of work is improved. The oil absorption filter is arranged outside the oil tank, the filter element is convenient to replace, the oil absorption filter is communicated with the oil tank through the switch valve, the circulation state of hydraulic oil in the oil tank is convenient to regulate and control, and therefore the filter element, the pipeline, the hydraulic pump and the like are convenient to replace.
Description
Technical Field
The utility model relates to the technical field of hydraulic systems of engineering machinery, in particular to a filter assembly, a hydraulic system and an operating machine.
Background
At present, most engineering machinery works through a hydraulic system, wherein the hydraulic system mainly comprises a hydraulic pump, a hydraulic valve, a hydraulic cylinder, a hydraulic motor, hydraulic oil and the like, and the hydraulic oil is stored in a hydraulic oil tank and has the functions of energy transmission, lubrication and the like as a working medium. The hydraulic oil pump sucks hydraulic oil from the hydraulic oil tank, the hydraulic oil is pressurized and then conveyed to actuating elements such as the hydraulic oil cylinder through parts such as the hydraulic pipeline and the hydraulic valve, and the hydraulic oil after acting returns to the hydraulic oil tank through the oil return pipeline to work and circulate repeatedly.
70% of hydraulic faults are caused by poor cleanliness of hydraulic oil, so that the cleanliness of oil sucked by a pump is improved by adopting an oil suction filter. And when the oil absorption filter is used for replacing the core or overhauling work or overhauling a hydraulic pipeline and a hydraulic pump, the leakage phenomenon of hydraulic oil in the oil tank is easy to occur, so that the waste is caused, and even the oil quantity of the hydraulic system is not enough to support the whole hydraulic system to normally work.
SUMMERY OF THE UTILITY MODEL
The utility model provides a filter assembly, a hydraulic system and an operation machine, which are used for solving the defect that the oil leakage phenomenon is easy to occur when an oil suction filter is overhauled or core replacement and other operations in the prior art. The oil absorption filter is arranged outside the oil tank, the filter element is convenient to replace, the oil absorption filter is communicated with the oil tank through the switch valve, the circulation state of hydraulic oil in the oil tank is convenient to regulate, and when the maintenance operation of replacing the filter element, the pipeline, the hydraulic pump and the like is performed, the switch valve can be closed, so that the leakage phenomenon of the hydraulic oil in the oil tank can be avoided.
The present invention provides a filter assembly comprising:
the oil suction filter is arranged on the outer side of the oil tank, and is provided with an oil outlet interface which is used for being communicated with a hydraulic pump of a hydraulic system;
and the switch valve is arranged between the oil outlet of the oil tank and the oil inlet of the oil absorption filter.
According to the filter assembly provided by the utility model, the switch valve is detachably connected with the oil suction filter.
According to the filter assembly provided by the utility model, the oil suction filter and the switch valve are of an integrated structure.
According to the filtering assembly provided by the utility model, the oil suction filter is provided with the plurality of oil outlet interfaces, and the plurality of oil outlet interfaces are positioned on the same side of the oil suction filter.
According to the present invention, there is provided a filter assembly, the oil absorption filter comprising:
the oil outlet port is arranged on the shell and communicated with the inner cavity of the shell;
the annular filter element is positioned in the inner cavity of the shell, and the annular filter element is provided with an oil inlet communicated with the switch valve.
According to the filter assembly provided by the utility model, the oil absorption filter further comprises a sealing end cover, the sealing end cover is arranged at one end of the shell far away from the switch valve, and the sealing end cover is detachably connected with the shell.
According to the filter assembly provided by the utility model, the connecting part of the sealing end cover and the shell is provided with the sealing ring.
According to the filter assembly provided by the utility model, the magnetic core for adsorbing metal debris in hydraulic oil is arranged in the inner cavity of the annular filter element.
The utility model also provides a hydraulic system, which comprises an oil tank, a plurality of hydraulic pumps and a filter assembly for filtering hydraulic oil, wherein the filter assembly is arranged between an oil outlet of the oil tank and an oil inlet of the hydraulic pump, and the filter assembly is any one of the filter assemblies.
The utility model also provides a working machine, which comprises a hydraulic system, wherein the hydraulic system is the hydraulic system.
According to the filtering component, the hydraulic system and the operation machine, the oil outlet port is formed in the oil absorption filter and is used for being communicated with the hydraulic pump of the hydraulic system, so that the oil absorption filter is used for a hydraulic oil circuit of the whole hydraulic system, a pipeline is optimized, the spatial arrangement of the pipeline is convenient, the structure of the hydraulic system is simplified, the weight of the filtering component is light, and the space occupied by the filtering component is reduced; and the hydraulic oil flowing into all the hydraulic pumps is filtered at the same time, so that the cleanliness of an oil way is improved, and the working reliability is improved. The oil absorption filter is arranged in the oil tank outside, is convenient for change the filter core to the oil absorption filter passes through ooff valve and oil tank intercommunication, is convenient for regulate and control the circulation state of hydraulic oil in the oil tank, thereby when being convenient for carry out the maintenance operation of renew cartridge and pipeline and hydraulic pump etc., can close the ooff valve, makes the hydraulic oil in the oil tank can not appear revealing the phenomenon.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a filter assembly provided by the present invention mounted on a fuel tank;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
fig. 3 is a cross-sectional view of an oil absorption filter provided by the present invention.
Reference numerals:
1: an oil tank; 2: an on-off valve; 3: an oil absorption filter;
4: an oil outlet interface; 5: a housing; 6: an annular filter element;
7: an oil inlet; 8: a partition plate; 9: and sealing the end cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The filter assembly of the present invention, which includes the oil suction filter 3 and the on-off valve 2, is described below with reference to fig. 1 to 3.
Wherein, the oil absorption filter 3 is arranged at the outer side of the oil tank 1, so that the filter element of the oil absorption filter 3 is convenient to replace. The oil suction filter 3 is provided with the oil outlet port 4, the oil outlet port 4 is used for being communicated with a hydraulic pump of a hydraulic system to supply filtered hydraulic oil to the hydraulic pump for use, namely, the condition that a plurality of oil pumps are common is met simultaneously, one oil suction filter 3 can be used for a hydraulic oil circuit of the whole hydraulic system to be common, for example, the oil suction filter can be used for processes needing hydraulic oil such as a main pump, a swing cylinder and stirring, and therefore the oil suction filter 3 does not need to be arranged at an oil suction port of each hydraulic pump, pipelines are optimized, pipeline space arrangement is facilitated, the structure of the hydraulic system is simplified, cost is saved, and the working reliability of the hydraulic system is improved.
Here, the oil suction filter 3 is provided with a plurality of oil outlet ports 4, and the plurality of oil outlet ports 4 are used for being communicated with a plurality of hydraulic pumps of a hydraulic system one by one.
And, the switch valve 2 is set between the oil inlet of the oil suction filter 3 and the oil outlet of the oil tank 1, that is, the oil suction filter 3 is communicated with the oil tank 1 through the switch valve 2. The opening and closing states of the switch valve 2 are regulated to regulate the circulation or the cut-off of the hydraulic oil in the oil tank 1.
Under normal conditions, the switch valve 2 is in an open state, and allows hydraulic oil to flow out of an oil outlet of the oil tank 1, flow into the oil absorption filter 3, be filtered by the oil absorption filter 3 and enter the pumping system under the suction action of the hydraulic pump, so that the hydraulic oil can obtain better cleanliness after being filtered by the oil absorption filter 3, and the failure rate of the hydraulic system is reduced or eliminated.
When parts in a hydraulic system need to be maintained, the switch valve 2 is closed, hydraulic oil in the oil tank 1 is stopped, and the hydraulic oil cannot flow into the oil absorption filter 3, so that a filter element can be conveniently replaced, a hydraulic pump, a pipeline and the like can be maintained, and the condition that the hydraulic oil in the oil tank 1 leaks cannot occur in the maintenance process.
Therefore, the oil outlet port 4 is arranged on the oil absorption filter 3 and is used for being communicated with a hydraulic pump of a hydraulic system, so that the oil absorption filter 3 is used for a hydraulic oil circuit of the whole hydraulic system, a pipeline is optimized, the spatial arrangement of the pipeline is convenient, the structure of the hydraulic system is simplified, the weight of a filter assembly is light, and the space occupied by the filter assembly is reduced; and the hydraulic oil flowing into all the hydraulic pumps is filtered simultaneously, so that the cleanliness of an oil way is improved, and the working reliability of a hydraulic system is improved. Oil absorption filter 3 arranges in the oil tank 1 outside, is convenient for change the filter core to oil absorption filter 3 passes through ooff valve 2 and 1 intercommunication of oil tank, is convenient for regulate and control the circulation state of hydraulic oil in the oil tank 1, thereby is convenient for change the maintenance of filter core and pipeline and hydraulic pump etc..
In an alternative embodiment of the present invention, the switch valve 2 may be located between the oil suction filter 3 and the oil tank 1, and the switch valve 2 is detachably connected to the oil suction filter 3, so as to facilitate replacement and maintenance of the oil suction filter, and when the oil suction filter 3 is disassembled and assembled, the switch valve 2 may be closed, thereby preventing leakage of hydraulic oil in the oil tank 1 due to outflow of hydraulic oil.
In an alternative embodiment of the present invention, the oil suction filter 3 and the on-off valve 2 may be formed as an integral structure, which facilitates the installation of the filter assembly on the oil tank 1 and simplifies the connection structure.
In an alternative embodiment, the oil suction filter 3 comprises a shell 5 and an annular filter element 6, wherein a plurality of oil outlets 4 are arranged on the shell 5, and the oil outlets 4 are communicated with the inner cavity of the shell 5; the annular filter element 6 is located in the shell 5, the annular filter element 6 is provided with an oil inlet 7 for being communicated with the switch valve 2, so that hydraulic oil in the oil tank 1 flows into an inner cavity of the annular filter element 6 through the oil inlet after passing through the switch valve 2, then flows into the inner cavity of the shell 5 after being filtered by the annular filter element 6, and finally flows into the plurality of hydraulic pumps through the plurality of oil outlet interfaces 4 respectively.
It should be noted that a partition plate 8 is arranged in the casing 5, one end of the annular filter element 6, which is close to the on-off valve 2, is in sealing contact with the partition plate 8, a through hole communicated with an oil inlet 7 of the annular filter element 6 is arranged on the partition plate 8, so that hydraulic oil can flow into an inner cavity of the annular filter element 6, and the partition plate 8 can prevent the hydraulic oil from directly flowing into the inner cavity of the casing 5 from the through hole, so that the hydraulic oil can be filtered by the annular filter element 6.
Wherein, the casing 5 can pass through flange connection with the valve body of ooff valve 2 to be provided with the sealing member in the flange, in order to avoid hydraulic oil to reveal.
The shell 5 can be in an integrated structure with the valve body of the switch valve 2, so that the connecting structure is reduced, the sealing performance of the filtering assembly is improved, hydraulic oil is prevented from leaking, and the hydraulic oil can conveniently enter the oil absorption filter 3.
In an alternative embodiment, the maximum working flow of the oil suction filter 3 may be more than three times that of the existing oil suction filter, so as to improve the dirt-holding capacity of the oil suction filter 3 and prolong the service life of the annular filter element 6.
In some embodiments, the oil suction filter 3 further includes a sealing end cap 9, and the sealing end cap 9 is disposed at an end of the housing 5 far from the on-off valve 2 and seals an end of the housing 5 far from the oil tank 1, so as to ensure the sealing performance of the housing 5.
Moreover, the end cap 9 is removably connected to the casing 5, so as to facilitate the replacement of the annular filter cartridge 6.
Specifically, the end cover 9 is connected with one end of the housing 5 far away from the switch valve 2 through a fixing bolt, so that the end cover 9 can be conveniently disassembled and assembled.
In the above embodiment, the joint of the end cover 9 and the casing 5 is provided with the sealing ring to improve the sealing performance of the oil absorption filter 3, so as to improve the sealing performance of the filter assembly and avoid the leakage of hydraulic oil.
In an alternative embodiment, a magnetic core may be disposed in the inner cavity of the annular filter element 6 for adsorbing metal debris in the hydraulic oil, so as to improve the filtering effect of the oil suction filter 3. Specifically, the magnetic core is arranged coaxially with the annular filter element 6, and one end of the magnetic core, which is far away from the on-off valve 2, can be fixedly connected with the end cap 9. In this way, the magnetic core can be fixed, and when the end cap 9 is opened, the magnetic core can be taken out conveniently, and metal debris adsorbed on the magnetic core can be cleaned.
In an alternative embodiment, the oil outlets 4 may be located on the same side of the oil suction filter 3, so as to optimize the piping and reduce the volume of the filter assembly.
Here, the oil suction filter 3 may be provided with two oil outlet ports 4 to supply oil to the two hydraulic pumps. The oil suction filter 3 may be provided with three or more oil suction ports 4, and the number of the oil discharge ports may be determined according to the number of specific hydraulic pumps.
The filter assembly provided by the utility model is arranged at the outer side of the oil tank 1, the oil absorption filter 3 is communicated with an oil outlet of the oil tank 1 through the switch valve 2, and under the normal condition, the switch valve 2 is in an open state, so that oil is allowed to enter a hydraulic system through the suction action of an oil pump after being filtered by the oil absorption filter 3 from the oil tank 1; when the maintenance state is down, close ooff valve 2 and can end the fluid in the oil tank 1 to the convenient filter core, maintain oil pump, pipeline etc. of changing oil absorption filter 3, the condition that the fluid in the oil tank 1 spills can not appear. A plurality of oil outlet interfaces 4 on the oil suction filter 3 are communicated with a plurality of oil pumps one by one so as to simultaneously meet the common use of the plurality of oil pumps. The diameter and the length of the annular filter element 6 of the oil absorption filter 3 are increased, so that the maximum working flow of the oil absorption filter 3 is increased, the dirt holding capacity of the oil absorption filter 3 is improved, and the service life of the oil absorption filter 3 is prolonged; set up the magnetic core in annular filter element 6's inner chamber, can adsorb the metal piece in the hydraulic oil, improved oil absorption filter 3's filter effect.
The hydraulic system provided by the utility model is described below, and the hydraulic system described below and the filter assembly described above are referred to with each other.
The hydraulic system provided by the utility model comprises an oil tank, a plurality of hydraulic pumps and a filter assembly, wherein the filter assembly is arranged between an oil outlet of the oil tank 1 and an oil inlet of the hydraulic pump and is used for filtering hydraulic oil to ensure the cleanliness of the hydraulic system. The filter assembly is the filter assembly described in any of the above embodiments, and the beneficial effects achieved by the hydraulic system are consistent with those achieved by the filter assembly, and are not described herein again.
The hydraulic system also comprises an oil way which is communicated with the hydraulic pump so as to supply the hydraulic oil to equipment needing the hydraulic oil.
The present disclosure provides a work machine, which may be referred to with respect to the hydraulic system described above.
The working machine provided by the utility model comprises the hydraulic system, the hydraulic system is the hydraulic system in the embodiment, the beneficial effects of the working machine are consistent with those of the hydraulic system, the hydraulic oil is filtered by the filtering component in the hydraulic system, and the hydraulic oil is supplied to the plurality of hydraulic oil paths simultaneously, so that the structure of the hydraulic system is simplified, the cost is reduced, the reliability of the hydraulic system is improved, the fault rate of the hydraulic system is reduced or eliminated, the shutdown loss is reduced, and the normal operation of the working machine is ensured.
The working machine can be a material distribution machine, a concrete conveying machine, a pumping machine and an engineering machine, and specifically can be a pump truck, a vehicle-mounted pump, a trailer pump, a wet blasting machine, an excavator, a bulldozer, a crane, a road roller, a conveyor, a textile machine and the like. Here, the working machine is not particularly limited, and only a machine including a hydraulic system is required.
The above-described embodiments of the apparatus are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A filter assembly, comprising:
the oil suction filter is arranged on the outer side of the oil tank, an oil outlet port is formed in the oil suction filter, and the oil outlet port is used for being communicated with a hydraulic pump of a hydraulic system;
and the switch valve is arranged between the oil outlet of the oil tank and the oil inlet of the oil absorption filter.
2. The filter assembly of claim 1, wherein the on-off valve is removably connected to the oil suction filter.
3. The filter assembly of claim 1, wherein the oil suction filter is a unitary structure with the on-off valve.
4. The filter assembly of any of claims 1-3, wherein the oil absorption filter is provided with a plurality of the oil outlet ports, the plurality of the oil outlet ports being located on the same side of the oil absorption filter.
5. The filter assembly of any of claims 1-3, wherein the oil absorption filter comprises:
the oil outlet port is arranged on the shell and communicated with the inner cavity of the shell;
the annular filter element is positioned in the inner cavity of the shell, and the annular filter element is provided with an oil inlet communicated with the switch valve.
6. The filter assembly of claim 5, wherein the oil absorption filter further comprises a seal end cap disposed at an end of the housing remote from the on-off valve, the seal end cap being removably connected to the housing.
7. The filter assembly of claim 6, wherein a seal ring is disposed at a junction of the end cap and the housing.
8. The filter assembly of claim 5, wherein the annular filter element has a magnetic core disposed within an interior chamber thereof for adsorbing metal debris from the hydraulic fluid.
9. A hydraulic system comprising a tank and a plurality of hydraulic pumps, further comprising a filter assembly for filtering hydraulic oil, said filter assembly being disposed between an oil outlet of said tank and an oil inlet of said hydraulic pumps, and said filter assembly being as claimed in any one of claims 1 to 8.
10. A working machine comprising a hydraulic system, characterized in that the hydraulic system is a hydraulic system according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220133137.4U CN216867173U (en) | 2022-01-18 | 2022-01-18 | Filter assembly, hydraulic system and operation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220133137.4U CN216867173U (en) | 2022-01-18 | 2022-01-18 | Filter assembly, hydraulic system and operation machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216867173U true CN216867173U (en) | 2022-07-01 |
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ID=82153866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220133137.4U Active CN216867173U (en) | 2022-01-18 | 2022-01-18 | Filter assembly, hydraulic system and operation machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216867173U (en) |
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2022
- 2022-01-18 CN CN202220133137.4U patent/CN216867173U/en active Active
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