CN107588059B - Oil return filter with novel self-sealing valve at oil port at high-flow top end installed on side surface of oil tank - Google Patents
Oil return filter with novel self-sealing valve at oil port at high-flow top end installed on side surface of oil tank Download PDFInfo
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- CN107588059B CN107588059B CN201710999221.8A CN201710999221A CN107588059B CN 107588059 B CN107588059 B CN 107588059B CN 201710999221 A CN201710999221 A CN 201710999221A CN 107588059 B CN107588059 B CN 107588059B
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- 238000007789 sealing Methods 0.000 title claims abstract description 88
- 239000003921 oil Substances 0.000 claims description 114
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention provides an oil return filter with a novel self-sealing valve on an oil port at the top end of a large flow installed on the side surface of an oil tank, which comprises an alarm switch (1), an upper cover (2), a shell (3), a filter element (4), the self-sealing valve (5), a sealing ring (6), a guide bolt (7), a spring baffle (8), a return spring (9), a bypass valve spring (10), a bypass valve head (11), a supporting plate (12), a sealing gasket (13), a gasket (14), a screw (15), an O-shaped ring (16) and a flange assembly (17). The beneficial effects of the invention are as follows: the hydraulic system of the large-tonnage mining dump truck meets the requirements of the hydraulic system of the large-tonnage mining dump truck, is convenient for filter installation and pipeline layout, and is convenient for filter element replacement and maintenance.
Description
Technical Field
The invention relates to the technical field of hydraulic systems of mining dumpers, in particular to a hydraulic return oil filtering system of a mining dumper.
Background
The hydraulic oil tank of the mining dump truck is almost installed on the left outer side of the frame without exception, for a large-tonnage dump truck, the filtering flow of an oil return filter is large and can reach more than 2000L/min, the common single oil return filter on the market is difficult to meet the requirement of the large flow, and the hydraulic oil tank is realized by selecting a double cylinder type or a plurality of filters in parallel after being modified, but the scheme is difficult to realize due to the space limitation of a cargo box and the structural limitation of the oil tank; the common filter arranged at the top of the oil tank is limited by the space of the cargo box, so that the filter and the filter element are very inconvenient to install and replace; the common filter of installing in oil tank side is because the low demand that can't satisfy of flow or because it is from the easy jamming of the toper reset spring self-sealing valve of taking, dislocation etc. cause the fault rate high, and self-sealing effect is poor, and the oil leak is serious when changing the filter core, and its oil return mouth is located the head side of filter in addition, from the actual installation space consideration of mine car needs to increase the 90 degree elbow transition of big latus rectum, just so increased the oil return resistance, increased the leakage point.
Disclosure of Invention
The invention provides an oil return filter with a novel self-sealing valve at the side surface of an oil tank, which is high in flow rate and has a top oil port, meets the requirements of a hydraulic system of a large-tonnage mining dump truck, is convenient for filter installation and pipeline layout, and is convenient for filter element replacement and maintenance.
In order to solve the technical problems, the invention adopts the following technical scheme:
the oil return filter is characterized by comprising a shell, wherein a screw is arranged on a flange plate on the outer wall of the middle part of the shell, and the oil return filter is arranged on the side surface of a hydraulic oil tank assembly through the screw; an upper cover is arranged at the top of the shell, a filter element is arranged in the shell, and the top of the filter element is abutted against the lower surface of the upper cover; an oil inlet is formed in the middle of the upper cover, and the upper end of the upper cover is connected with an oil return hydraulic hose through a flange assembly;
the bottom of the shell is provided with a round hole and is inserted with a self-sealing valve, a supporting plate is arranged below the filter element, and the top end of the self-sealing valve is abutted against the lower surface of the supporting plate; the side surface of the self-sealing valve is provided with a diffusion hole; a vertical guide bolt is inserted into the bottom end flange of the self-sealing valve, the upper end of the guide bolt is provided with threads and is inserted into the bottom of the shell, the lower end of the guide bolt is sleeved with a return spring, the return spring is positioned between the head of the guide bolt and the bottom end flange of the self-sealing valve, and a spring baffle is arranged between the return spring and the head of the guide bolt;
and a bypass valve spring and a bypass valve head are arranged below the supporting plate and are positioned inside the self-sealing valve.
The oil return filter with the novel self-sealing valve is characterized in that the upper cover is provided with the alarm switch, when the filter element of the filter is blocked to a certain degree, the filtering capacity of the filter element is reduced, the back pressure of the oil return on the inner side and the outer side of the filter element is increased, and when the set value of the alarm switch is reached, the alarm switch gives an alarm.
The oil return filter with the novel self-sealing valve is characterized in that the filter element is a high-flow glass fiber filter element, and the single-piece flow reaches 2000L/min.
The oil return filter with the novel self-sealing valve is characterized in that the upper cover is an oil return end cover of the top oil port, and the oil return filter is different from the side oil port and does not need to be increased by 90-degree elbow transition.
The oil return filter with the novel self-sealing valve is characterized in that 3 groups of bypass valves which are connected in parallel are arranged on the supporting plate.
The oil return filter with the novel self-sealing valve is characterized in that the bypass valve head is arranged on the supporting plate, and the bypass valve spring is connected below the bypass valve head.
The oil return filter with the novel self-sealing valve is characterized in that an O-shaped ring is arranged on the side face of the shell and the side face of the upper cover.
The oil return filter with the novel self-sealing valve is characterized in that a sealing gasket is arranged between the flange plate of the shell and the side wall of the hydraulic oil tank; a gasket is arranged between the flange plate of the shell and the head part of the screw.
The oil return filter of the novel self-sealing valve is characterized in that the number of the guide bolts and the reset springs is 4, the guide bolts and the reset springs are uniformly distributed on the outer side of the self-sealing valve, and the spring baffle is arranged between the 4 reset springs and the heads of the guide bolts.
The oil return filter with the novel self-sealing valve is characterized in that a sealing ring is arranged between the side wall of the circular hole at the bottom of the shell and the self-sealing valve, and the sealing ring is U-shaped and is clamped on the wall of the circular hole at the bottom of the shell.
The beneficial effects of the invention are as follows:
1. the oil return filter is arranged on the side surface of the large-sized walking machinery oil tank, and the filtering flow rate is up to 2000L/min.
2. The oil return filter is a filter with a novel self-sealing valve, the self-sealing valve is unique in structure and is of a four-column outer guide type structure, and compared with a common conical spring reset structure, the structure only maintains one degree of freedom of axial translation, has no rotational degree of freedom and other degrees of freedom causing dislocation translation of the self-sealing valve, cannot cause faults such as valve blocking and dislocation, is quick and reliable in self-sealing, and reduces oil leakage during filter element replacement.
3. The oil inlet of the oil return filter is positioned at the top end of the filter head, so that the arrangement and the pipeline connection of the components of the mine car hydraulic system are convenient, the 90-degree elbow transition is not required to be added, and the oil return back pressure is reduced.
4. The bypass valve group with parallel large through flow for the oil return filter comprises three independent bypass valves, the bypass flow is large, and two left oil return filters still have certain bypass capacity even if one of the bypass valves fails, so that the filter element is effectively protected.
Drawings
The invention is further described with reference to the drawings and detailed description which follow:
FIG. 1 is a diagram of a filter installation location according to the present invention;
FIG. 2 is a block diagram of a filter according to the present invention;
in the figure: 111. a hydraulic oil tank assembly; 112. a filter assembly; 1. an alarm switch; 2. an upper cover; 3. a housing; 4. a filter element; 5. a self-sealing valve; 6. a seal ring; 7. a guide bolt; 8. a spring baffle; 9. a return spring; 10. a bypass valve spring; 11. a bypass valve head; 12. a supporting plate; 13. a sealing gasket; 14. a gasket; 15. a screw; 16. an O-ring; 17. and a flange assembly.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the oil return filter is characterized by comprising a shell, wherein a screw is arranged on a flange plate on the outer wall of the middle part of the shell, and the oil return filter is arranged on the side surface of a hydraulic oil tank assembly through the screw; an upper cover (2) is arranged at the top of the shell, a filter element (4) is arranged in the shell, and the top of the filter element (4) is abutted against the lower surface of the upper cover (2); an oil inlet is formed in the middle of the upper cover (2), and the upper end of the upper cover (2) is connected with an oil return hydraulic hose through a flange component;
a round hole is formed in the bottom of the shell, a self-sealing valve is inserted into the shell, a supporting plate (12) is arranged below the filter element (4), and the top end of the self-sealing valve abuts against the lower surface of the supporting plate; the side surface of the self-sealing valve is provided with a diffusion hole; a vertical guide bolt (7) is inserted into a flange at the bottom end of the self-sealing valve, threads are arranged at the upper end of the guide bolt (7) and are inserted into the bottom of the shell (3), a return spring (9) is sleeved at the lower end of the guide bolt (7), the return spring (9) is positioned between the head of the guide bolt (7) and the flange at the bottom end of the self-sealing valve (5), and a spring baffle (8) is arranged between the return spring (9) and the head of the guide bolt (7);
a bypass valve spring (10) and a bypass valve head (11) are arranged below the supporting plate (12), and the bypass valve spring (10) and the bypass valve head (11) are positioned inside the self-sealing valve (5).
The oil return filter with the novel self-sealing valve is characterized in that the upper cover (2) is provided with the alarm switch (1), when the filter element (4) of the filter is blocked to a certain degree, the filtering capacity of the filter element (4) is reduced, the back pressure of the oil return in the inner side and the outer side of the filter element (4) is increased, and when the set value of the alarm switch (1) is reached, the alarm switch (1) alarms.
The oil return filter with the novel self-sealing valve is characterized in that the filter element (4) is a high-flow glass fiber filter element, and the single-piece flow reaches 2000L/min.
The oil return filter with the novel self-sealing valve is characterized in that the upper cover (2) is an oil return end cover of the top oil port, and is different from the side oil port, and the 90-degree elbow transition is not required to be added.
The oil return filter with the novel self-sealing valve is characterized in that 3 groups of bypass valves which are connected in parallel are arranged on the supporting plate (12).
The oil return filter with the novel self-sealing valve is characterized in that the bypass valve head (11) is arranged on the supporting plate (12), and the bypass valve spring (10) is connected below the bypass valve head.
The oil return filter with the novel self-sealing valve is characterized in that an O-shaped ring (16) is arranged on the side surfaces of the shell (3) and the upper cover (2).
The oil return filter with the novel self-sealing valve is characterized in that a sealing gasket (13) is arranged between a flange plate of the shell (3) and the side wall of the hydraulic oil tank; a gasket (14) is arranged between the flange plate of the shell (3) and the head of the screw (15).
The oil return filter with the novel self-sealing valve is characterized in that the guide bolts (7) and the reset springs (9) are 4 in number and uniformly distributed on the outer side of the self-sealing valve (5), and the spring baffle (8) is arranged between the 4 reset springs and the heads of the guide bolts.
The oil return filter with the novel self-sealing valve is characterized in that a sealing ring (6) is arranged between the side wall of a circular hole at the bottom of the shell (3) and the self-sealing valve (5), and the sealing ring (6) is in a U-shaped clamping groove shape and is clamped on the circular hole wall at the bottom of the shell.
As shown in fig. 1: the filter assembly (112) is arranged on the side face of the hydraulic oil tank assembly (111), an oil inlet for returning oil is arranged at the top end of the filter head, and the filter assembly is directly connected with an oil return hydraulic hose through the flange assembly.
As shown in fig. 2: the alarm switch (1) is arranged on the upper cover (2); the flange component (17) is connected with a corresponding oil return hydraulic pipe and is also connected with the upper cover (2); the upper cover (2) is connected to the upper end of the shell (3) through a screw, and the upper cover (2) and the shell (3) are sealed by an O-shaped ring (16); the filter element (4) is arranged in the filter assembly, the upper end of the filter element is propped against the upper cover (2), and the lower end of the filter element is propped against the supporting plate (12); the self-sealing valve (5) is arranged below the supporting plate (12); the sealing ring (6) is arranged between the shell (3) and the self-sealing valve (5); the 4 guide bolts (7) are arranged below the shell (3); the 4 return springs (9) are arranged on the corresponding guide bolts (7); the spring baffle plate (8) is arranged on the guide bolt (7) and is positioned between the return spring (9) and the guide bolt head; the bypass valve spring (10) and the bypass valve head (11) are both arranged on the supporting plate (12) and positioned in the self-sealing valve (5); the sealing gasket (13) is arranged between the shell (3) and the side wall of the hydraulic oil tank; washers (14) and screws (15) are mounted in corresponding through holes in the flange of the housing for connecting the filter to the hydraulic tank.
The working principle of the invention is as follows:
the filter assembly (112) is arranged on the side face of the hydraulic oil tank assembly (111), an oil inlet for oil return is arranged at the top end of the head of the filter, an oil return hose is directly connected to the inlet end of the filter through the flange assembly, 90-degree elbow transition is not needed, and oil return back pressure is reduced.
When the filter normally filters oil returning liquid, the liquid enters the filter through the oil inlet at the upper end of the upper cover (2), enters the filter element (4), is filtered by the filter element and then is diffused between the filter element (4) and the shell (3), and flows back into the oil tank through the space between the filter element and the shell and the diffusion hole on the valve element of the self-sealing valve (5), so that the oil returning filtering process is completed.
When the filter element (4) is blocked to a certain extent, the filtering capacity of the filter element is reduced, the back pressure of the oil return of the inner side and the outer side of the filter element is increased, and when the set value of the alarm switch (1) is reached, the alarm switch (1) alarms, and the filter element should be replaced in time at the moment. If the filter element (4) is further blocked, the bypass valve head (11) compresses the bypass valve spring (10) under the action of oil return pressure, at the moment, the bypass valve is opened, and the blocked pressure oil mostly directly passes through the filter element (4) and the bypass valve oil return tank, and because the filter has large filtering flow, the bypass valve is a parallel bypass valve group formed by three independent bypass valves, the bypass flow is large, and the bypass valve is arranged on the supporting plate (12) in parallel.
When the filter element is replaced, the upper cover (2) is detached to take out the filter element (4), at the moment, the filter element (4) cannot support the supporting plate (12), the self-sealing valve is rapidly closed by the external guide type self-sealing valve (5) under the action of 4 reset springs (9), oil is prevented from leaking, the self-sealing valve is limited by 4 external guide bolts, only one degree of freedom of axial translation is reserved, and the rotation degree of freedom and other degrees of freedom causing dislocation translation of the self-sealing valve are avoided, so that the self-sealing is safe and reliable; because four return springs are adopted, the rigidity of each spring can meet the requirement of quick self-sealing without being too high, and even one or two of the springs fail, the self-sealing effect is not affected, so that the reliability is further improved.
Therefore, the invention realizes the oil return filter with the novel self-sealing valve for the large-flow area of the oil return port at the top end of the side surface of the oil tank, meets the oil return filtering requirement of the large-flow hydraulic system of the large-tonnage mine car, is convenient for the installation of components of the hydraulic system and the layout of an oil return pipeline, is beneficial to reducing the oil return back pressure of the system, and improves the whole service life and the reliability of the system.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (8)
1. The side surface of the oil tank is provided with an oil return filter with a large-flow top oil port and a self-sealing valve, and the oil return filter is characterized by comprising a shell, wherein a screw is arranged on a flange plate on the outer wall of the middle part of the shell and is arranged on the side surface of a hydraulic oil tank assembly through the screw; an upper cover (2) is arranged at the top of the shell, a filter element (4) is arranged in the shell, and the top of the filter element (4) is abutted against the lower surface of the upper cover (2); an oil inlet is formed in the middle of the upper cover (2), and the upper end of the upper cover (2) is connected with an oil return hydraulic hose through a flange component;
a round hole is formed in the bottom of the shell, a self-sealing valve is inserted into the shell, a supporting plate (12) is arranged below the filter element (4), and the top end of the self-sealing valve abuts against the lower surface of the supporting plate; the side surface of the self-sealing valve is provided with a diffusion hole; a vertical guide bolt (7) is inserted into a flange at the bottom end of the self-sealing valve, threads are arranged at the upper end of the guide bolt (7) and are inserted into the bottom of the shell (3), a return spring (9) is sleeved at the lower end of the guide bolt (7), the return spring (9) is positioned between the head of the guide bolt (7) and the flange at the bottom end of the self-sealing valve (5), and a spring baffle (8) is arranged between the return spring (9) and the head of the guide bolt (7);
a bypass valve spring (10) and a bypass valve head (11) are arranged below the supporting plate (12), and the bypass valve spring (10) and the bypass valve head (11) are positioned inside the self-sealing valve (5);
3 groups of bypass valves connected in parallel are arranged on the supporting plate (12);
the guide bolts (7) and the reset springs (9) are 4 in number and uniformly distributed on the outer side of the self-sealing valve (5), and the spring baffle plates (8) are arranged between the 4 reset springs and the heads of the guide bolts.
2. The oil return filter with the self-sealing valve at the oil port at the top end of the large flow rate installed on the side surface of the oil tank according to claim 1 is characterized in that an alarm switch (1) is arranged on the upper cover (2), when a filter element (4) of the filter is blocked to a certain extent, the filtering capacity of the filter element (4) is reduced, the back pressure of the oil return of the inner side and the outer side of the filter element (4) is increased, and when the set value of the alarm switch (1) is reached, the alarm switch (1) alarms.
3. The oil return filter with the self-sealing valve at the oil port at the top of the large-flow side of the oil tank according to claim 1, wherein the filter element (4) is a large-flow glass fiber filter element, and the single-piece flow is 2000L/min.
4. The oil return filter with the self-sealing valve at the top oil port and the large-flow side-mounted top oil port of the oil tank according to claim 1, wherein the upper cover (2) is an oil return end cover of the top oil port, and unlike a side oil port, the transition of a 90-degree elbow is not required to be added.
5. The oil return filter with a self-sealing valve for a side-mounted high-flow top oil port of an oil tank according to claim 1, wherein the bypass valve head (11) is mounted on the supporting plate (12), and the bypass valve spring (10) is connected below the bypass valve head.
6. The oil return filter with the self-sealing valve at the oil port at the top end of the large flow rate installed on the side surface of the oil tank according to claim 1, wherein an O-shaped ring (16) is arranged on the side surface of the shell (3) and the upper cover (2).
7. The oil return filter with the self-sealing valve at the oil port at the top of the large-flow side of the oil tank according to claim 1, wherein a sealing gasket (13) is arranged between a flange plate of the shell (3) and the side wall of the hydraulic oil tank; a gasket (14) is arranged between the flange plate of the shell (3) and the head of the screw (15).
8. The oil return filter with the self-sealing valve at the oil port at the top of the large-flow side of the oil tank according to claim 1 is characterized in that a sealing ring (6) is arranged between the side wall of a circular hole at the bottom of the shell (3) and the self-sealing valve (5), and the sealing ring (6) is in a U-shaped clamping groove shape and is clamped on the circular hole wall at the bottom of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710999221.8A CN107588059B (en) | 2017-10-24 | 2017-10-24 | Oil return filter with novel self-sealing valve at oil port at high-flow top end installed on side surface of oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710999221.8A CN107588059B (en) | 2017-10-24 | 2017-10-24 | Oil return filter with novel self-sealing valve at oil port at high-flow top end installed on side surface of oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107588059A CN107588059A (en) | 2018-01-16 |
| CN107588059B true CN107588059B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710999221.8A Active CN107588059B (en) | 2017-10-24 | 2017-10-24 | Oil return filter with novel self-sealing valve at oil port at high-flow top end installed on side surface of oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107588059B (en) |
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| CN207364010U (en) * | 2017-10-24 | 2018-05-15 | 徐州徐工矿山机械有限公司 | Fuel tank side is installed by the return filter of the new Self-sealing valve of big flow top hydraulic fluid port band |
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|---|---|---|---|---|
| GB709847A (en) * | 1952-01-29 | 1954-06-02 | Dowty Equipment Ltd | Improvements relating to non-return valves |
| US3674147A (en) * | 1971-02-08 | 1972-07-04 | Millipore Corp | Check valve |
| DE2742610A1 (en) * | 1977-09-22 | 1979-03-29 | Zahnradfabrik Friedrichshafen | OIL RESERVOIR WITH REPLACEABLE FILTER CARTRIDGE AND SAFETY VALVE |
| CN2163681Y (en) * | 1993-04-09 | 1994-05-04 | 宋焱 | Self-sealing oil-suction oil filter |
| AU6582496A (en) * | 1996-05-28 | 1997-12-04 | Tien - Ju Meng | A check valve for controlling the extracting movement of a pneumatic threaded fastener-setting tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107588059A (en) | 2018-01-16 |
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