CN209800383U - Hydraulic oil tank - Google Patents
Hydraulic oil tank Download PDFInfo
- Publication number
- CN209800383U CN209800383U CN201920390157.8U CN201920390157U CN209800383U CN 209800383 U CN209800383 U CN 209800383U CN 201920390157 U CN201920390157 U CN 201920390157U CN 209800383 U CN209800383 U CN 209800383U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil return
- mounting seat
- tank body
- oil tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The utility model discloses a hydraulic tank belongs to engineering machine tool hydraulic system technical field. An oil suction port and an oil return port are formed in the oil tank body; the bottom of the oil tank body is provided with a first mounting through hole, and an oil return mounting seat is mounted in the first mounting through hole at the bottom of the oil tank body; the center of the oil return mounting seat is provided with a through hole serving as an oil return opening, the upper end of the oil return mounting seat is sleeved with an oil return filter element, and the oil return filter element is communicated with the oil return opening; a filter cylinder is covered on the outer side of the oil return filter element, small holes are densely distributed on the circumferential surface of the filter cylinder, a gap is reserved between the filter cylinder and the oil return filter element, and the lower end of the filter cylinder is abutted against the upper end of the oil return mounting seat; the upper end of the oil tank body is provided with an upper cover which is propped against the upper ends of the oil return filter element and the filter cylinder. The utility model simplifies the structure of the tank body of the oil tank, reduces the oil filling amount of the oil tank, and has low cost and small volume; can eliminate a large amount of bubbles, prolong the service time of oil products and reduce the influence of cavitation on a hydraulic system.
Description
Technical Field
The utility model relates to an engineering machine tool hydraulic system technical field specifically is a hydraulic tank.
Background
hydraulic systems are an important component of construction machines. The hydraulic system plays an important role in the working and steering process of the engineering machinery. For example, the working devices and steering of the loader are hydraulically driven. The hydraulic system of such a construction machine comprises a hydraulic tank which serves for storing a hydraulic medium, such as hydraulic oil, and for supplying the medium to the elements of the hydraulic system, while filtering, defoaming, precipitating and purifying the hydraulic oil returning to the hydraulic tank.
The hydraulic oil tank of the engineering machinery generally has the following problems,
Firstly, the oil tank is internally provided with a clapboard, the structure is complex, the processing difficulty is increased,
Secondly, the common air bubbles in the oil tank have poor elimination effect, the air bubbles enter the hydraulic system again to damage the elements of the hydraulic system and accelerate the aging of the hydraulic oil,
thirdly, the oil tank has larger volume and large oil filling amount in a single time, and the manufacturing and maintenance cost is increased.
Disclosure of Invention
Problem to above-mentioned prior art exists, the utility model provides a hydraulic tank improves through the structure to the oil return filter core, reachs the purpose of eliminating the bubble to the oil return filter core merges the function of baffle, reaches and simplifies the oil tank structure, reduces the purpose of oil tank volume.
The utility model discloses a following technical scheme realizes: a hydraulic oil tank comprises an oil tank body, wherein an oil suction port and an oil return port are formed in the oil tank body; the bottom of the oil tank body is provided with a first mounting through hole, and an oil return mounting seat is mounted in the first mounting through hole at the bottom of the oil tank body; the center of the oil return mounting seat is provided with a through hole serving as an oil return opening, the upper end of the oil return mounting seat is sleeved with an oil return filter element, and the oil return filter element is communicated with the oil return opening; a filter cylinder is covered on the outer side of the oil return filter element, small holes are densely distributed on the circumferential surface of the filter cylinder, a gap is reserved between the filter cylinder and the oil return filter element, and the lower end of the filter cylinder is abutted against the upper end of the oil return mounting seat; the upper end of the oil tank body is provided with an upper cover which is propped against the upper ends of the oil return filter element and the filter cylinder.
It further comprises the following steps: the filter cylinder is a cylindrical cylinder, and the wall thickness is 0.5-5 mm.
the equivalent diameter of the small holes on the filter cylinder is 0.01-0.5mm, and the sum of the areas of all the small holes is more than or equal to Qm2And Q is the maximum flow value of the oil return filter element.
a second mounting through hole is formed in the bottom of the oil tank body, and an oil absorption mounting seat is mounted in the second mounting through hole in the bottom of the oil tank body; the oil suction mounting seat and the oil return mounting seat are respectively arranged at two sides of the oil tank body; the center of the oil suction mounting seat is provided with a through hole as an oil suction port.
the upper end of the oil absorption mounting seat is an inclined plane, and the high point of the inclined plane of the oil absorption mounting seat is close to one side of the oil return mounting seat.
The upper end of the oil return mounting seat is in a step shape, and the lower ends of the oil return filter element and the filter cylinder are clamped on different steps at the upper end of the oil return mounting seat in a matched mode.
the upper cover comprises a cylindrical support fixed at the upper end of the oil tank body, and a cover plate is arranged on the support; a cylindrical filter cartridge pressing plate is fixed on the lower side of the cover plate, and a core pressing plate fixed below the cover plate is arranged on the inner side of the filter cartridge pressing plate; the inner wall of the support is matched with the outer wall of the upper end of the filter cylinder, and the outer wall of the filter cylinder pressing plate is matched with the inner wall of the upper end of the filter cylinder; the core pressing plate is abutted against the upper end of the oil return filter element.
An air filter is installed at the upper end of the oil tank body.
and a liquid level meter is installed on one side of the oil tank body.
Compared with the prior art, the utility model discloses the beneficial effect who has:
The oil return filter element has the function of combining the partition plates, so that the partition plate of the oil tank is cancelled, and the structure of the oil tank body is simplified; all oil in the oil tank participates in the working cycle, no trapped oil exists in the hydraulic oil tank, the oil filling amount of the oil tank is reduced, the cost is low, and the problems of large volume and complex structure of the existing hydraulic oil tank are solved;
After the hydraulic oil passes through the filter element and the filter cylinder, a large number of bubbles are eliminated before entering the oil suction port, so that the service time of the oil is prolonged, and the influence of cavitation on a hydraulic system is reduced.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic view of the oil flow in the present invention;
In the figure: 1. the oil tank comprises an air filter, 2, an oil tank body, 3, an oil return filter core, 4, a filter cylinder, 5, a liquid level meter, 6, an oil return mounting seat, 7, an upper cover, A, an oil suction port, B, an oil return port, C, an oil tank liquid level, D and a liquid level inside the filter cylinder.
Detailed Description
the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, a liquid level gauge 5 is installed at one side of a tank body 2, and an air cleaner 1 is installed at the upper end of the tank body 2.
The bottom of the oil tank body 2 is provided with a first mounting through hole and a second mounting through hole which are respectively arranged at two sides of the oil tank body 2. An oil return mounting seat 6 is arranged in the first mounting through hole at the bottom of the oil tank body 2, and a through hole serving as an oil return opening B is formed in the center of the oil return mounting seat 6. An oil absorption mounting seat is arranged in a second mounting through hole at the bottom of the oil tank body 2, and a through hole serving as an oil suction port A is formed in the center of the oil absorption mounting seat. The upper end of the oil absorption mounting seat is an inclined plane, and the high point of the inclined plane of the oil absorption mounting seat is close to one side of the oil return mounting seat 6.
The upper end of the oil return mounting seat 6 is in a step shape, the oil return filter element 3 and the filter cylinder 4 are both in a cylindrical shape, and the lower ends of the oil return filter element 3 and the filter cylinder 4 are clamped on different steps at the upper end of the oil return mounting seat 6 in a matching manner. The upper cover 7 comprises a cylindrical support fixed at the upper end of the oil tank body 2, and a cover plate is arranged on the support. The lower side of the cover plate is fixed with a cylindrical filter cartridge press plate, and the inner side of the filter cartridge press plate is provided with a core press plate fixed below the cover plate. The inner wall of the support seat is matched with the outer wall of the upper end of the filter cylinder 4, the outer wall of the filter cylinder pressure plate is matched with the inner wall of the upper end of the filter cylinder 4, and the lower end of the filter cylinder pressure plate is provided with a step which is propped against the upper end of the filter cylinder 4. The core pressing plate is propped against the upper end of the oil return filter element 3.
The circumference of the filter cylinder 4 is densely distributed with small holes, and a gap is reserved between the filter cylinder 4 and the oil return filter element 3. The wall thickness of the filter cartridge 4 is 0.5-5mm, and the equivalent diameter (diameter of a circle with the same area) of a single hole of the filter cartridge 4 is 0.01-0.5 mm. The sum of the areas of the small holes is more than or equal to Qm2And Q is the maximum flow value passed by the oil return filter element 3.
As shown in fig. 2, the working principle of the present invention is as follows:
The oil in the hydraulic oil tank enters the hydraulic system from the oil suction port A of the oil tank body 2 and returns to the hydraulic oil tank from the oil return port B of the oil tank body 2; the oil returning to the hydraulic oil tank firstly enters an inner cavity of the oil return filter element 3 through the mounting seat 6, is filtered by the oil return filter element 3 and then enters a region between the oil return filter element 3 and the filter cartridge 4, the filter cartridge 4 is a hollow cylinder with small holes densely distributed on the periphery, the oil enters the oil tank body 2 through the holes on the filter cartridge 4, flows through the whole oil tank body 2 and enters an oil suction port A of the oil tank body 2, and new circulation is started again;
Due to the filtering action of the oil return filter element 3, the oil pressure in the inner cavity of the oil return filter element 3 is obviously higher than the oil pressure in the area between the oil return filter element 3 and the filter cylinder 4, and because the flow rate of the pressure difference oil is faster, the oil rushes into the area between the oil return filter element 3 and the filter cylinder 4. Oil in the area between the oil return filter element 3 and the filter cylinder 4 enters the oil tank body 2 through a small hole on the filter cylinder 4;
the equivalent diameter of a single hole of each small hole of the filter cylinder 4 is not more than 0.5mm, and the sum of the areas of all the small holes is not less than Qm2Therefore, the small hole has a certain throttling effect, the oil inside and outside the filter cylinder 4 has a certain pressure difference, and the pressure difference enables the oil in the area between the oil return filter element 3 and the filter cylinder 4 to be higher than the liquid level of the oil tank, so that the phenomenon that the oil out of the oil return filter element 3 is involved in air can not occur;
Meanwhile, the pore diameter of the small hole of the filter cartridge 4 is small, and large bubbles in the oil liquid are divided by the small hole, so that the possibility that the large bubbles enter the oil tank body 2 and then enter a hydraulic system is prevented;
meanwhile, the filter cartridge 4 has a large number of small holes and a flow area which is much larger than that of the oil return filter element, so that the flow speed of oil flowing into the oil tank body 2 through the filter cartridge 4 is slow, when the small holes of the filter cartridge 4 are positioned on the oil liquid level of the oil tank body 2, the filter cartridge plays a drainage role, and the oil flows into the oil liquid of the oil tank body 2 along the filter cartridge, thereby preventing air from being involved;
after the oil slowly flows out of the filter cartridge 4, the oil flows to the oil suction port A through the whole oil tank body 2, no obstacle exists in the flowing process, all the oil in the oil tank body 2 participates in circulation, the time of the oil staying in the oil tank is prolonged to the maximum extent, the oil in the oil tank is in a steady flow state due to slow flow speed, bubbles in the oil float upwards during the period, impurities sink, and most of the bubbles remained in the oil are eliminated;
when the liquid level in the oil tank body 2 changes, air enters or is discharged from the oil tank body 2 through the air cleaner 1, and the stability of the air pressure in the oil tank body 2 is maintained. The position of the oil level in the tank body 2 can be seen by the level gauge 5.
Of course, the above embodiments are only preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, the present invention can be adjusted in a targeted manner according to actual needs, so as to obtain different embodiments. This is not illustrated here, since many implementations are possible.
Claims (9)
1. A hydraulic oil tank comprises an oil tank body (2), wherein an oil suction port (A) and an oil return port (B) are formed in the oil tank body (2); the method is characterized in that: a first mounting through hole is formed in the bottom of the oil tank body (2), and an oil return mounting seat (6) is mounted in the first mounting through hole in the bottom of the oil tank body (2); a through hole serving as an oil return opening (B) is formed in the center of the oil return mounting seat (6), an oil return filter element (3) is sleeved at the upper end of the oil return mounting seat (6), and the oil return filter element (3) is communicated with the oil return opening (B); a filter cylinder (4) is covered on the outer side of the oil return filter element (3), small holes are densely distributed on the circumferential surface of the filter cylinder (4), a gap is reserved between the filter cylinder (4) and the oil return filter element (3), and the lower end of the filter cylinder (4) is abutted against the upper end of an oil return mounting seat (6); an upper cover (7) is installed at the upper end of the oil tank body (2), and the upper cover (7) is abutted to the upper ends of the oil return filter element (3) and the filter cartridge (4).
2. a hydraulic tank according to claim 1, characterized in that: the filter cylinder (4) is a cylindrical cylinder, and the wall thickness is 0.5-5 mm.
3. A hydraulic oil tank according to claim 1 or 2, characterized in that: the equivalent diameter of the small holes on the filter cylinder (4) is 0.01-0.5mm, and the sum of the areas of all the small holes is more than or equal to Qm2And Q is the maximum flow value passed by the oil return filter element (3).
4. A hydraulic tank according to claim 1, characterized in that: a second mounting through hole is formed in the bottom of the oil tank body (2), and an oil absorption mounting seat is mounted in the second mounting through hole in the bottom of the oil tank body (2); the oil suction mounting seat and the oil return mounting seat (6) are respectively arranged at two sides of the oil tank body (2); the center of the oil suction mounting seat is provided with a through hole serving as an oil suction port (A).
5. A hydraulic tank according to claim 4, characterized in that: the upper end of the oil absorption mounting seat is an inclined plane, and the high point of the inclined plane of the oil absorption mounting seat is close to one side of the oil return mounting seat (6).
6. A hydraulic tank according to claim 1, characterized in that: the upper end of the oil return mounting seat (6) is in a step shape, and the lower ends of the oil return filter element (3) and the filter cylinder (4) are clamped on different steps at the upper end of the oil return mounting seat (6) in a matching mode.
7. A hydraulic tank according to claim 6, characterized in that: the upper cover (7) comprises a cylindrical support fixed at the upper end of the oil tank body (2), and a cover plate is arranged on the support; a cylindrical filter cartridge pressing plate is fixed on the lower side of the cover plate, and a core pressing plate fixed below the cover plate is arranged on the inner side of the filter cartridge pressing plate; the inner wall of the support is matched with the outer wall of the upper end of the filter cylinder, and the outer wall of the filter cylinder pressing plate is matched with the inner wall of the upper end of the filter cylinder; the core pressing plate is abutted against the upper end of the oil return filter element (3).
8. a hydraulic tank according to claim 1, characterized in that: an air filter (1) is installed at the upper end of the oil tank body (2).
9. A hydraulic tank according to claim 1, characterized in that: a liquid level meter (5) is installed on one side of the oil tank body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390157.8U CN209800383U (en) | 2019-03-26 | 2019-03-26 | Hydraulic oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390157.8U CN209800383U (en) | 2019-03-26 | 2019-03-26 | Hydraulic oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209800383U true CN209800383U (en) | 2019-12-17 |
Family
ID=68826463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920390157.8U Active CN209800383U (en) | 2019-03-26 | 2019-03-26 | Hydraulic oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209800383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882459A (en) * | 2019-03-26 | 2019-06-14 | 徐工集团工程机械股份有限公司科技分公司 | Hydraulic oil container |
-
2019
- 2019-03-26 CN CN201920390157.8U patent/CN209800383U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882459A (en) * | 2019-03-26 | 2019-06-14 | 徐工集团工程机械股份有限公司科技分公司 | Hydraulic oil container |
| CN109882459B (en) * | 2019-03-26 | 2024-01-23 | 徐工集团工程机械股份有限公司科技分公司 | Hydraulic oil tank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109882459B (en) | Hydraulic oil tank | |
| CN209800383U (en) | Hydraulic oil tank | |
| CN103551337B (en) | Circulation filtration system and filtration method of mold cleaning fluid | |
| CN102840186B (en) | Liquid container | |
| CN107175582B (en) | Honing liquid collecting and cooling system for honing production line | |
| CN109707677B (en) | Hydraulic oil tank | |
| CN210356240U (en) | Lathe cutting fluid filter equipment | |
| CN216781173U (en) | High-pressure cooling equipment | |
| CN209062682U (en) | A kind of numerical control machining center cutting fluid water tank with strainer mechanism | |
| CN105060396A (en) | Inverted oily sewage filter | |
| CN208465312U (en) | Hydraulic oil and lubricating oil filter | |
| CN207446846U (en) | A kind of CNC high-pressure cleaning machine cisten mechanism | |
| CN205649933U (en) | A precision filter for high -accuracy numerical control machining center | |
| CN113274787B (en) | Filtering system and machine tool | |
| CN203654071U (en) | Filter for pulping of paper manufacturing machine | |
| CN217700476U (en) | Hydraulic pipeline flushing device | |
| CN217401306U (en) | Hydraulic return oil filtering structure of loader and hydraulic oil tank | |
| CN214888004U (en) | Hydraulic oil tank special for excavator | |
| CN203114759U (en) | Secondary sedimentation hydraulic oil tank applied to backhoe loader | |
| CN213858155U (en) | Cooling device based on CNC | |
| CN214270316U (en) | Cutting fluid waste water recycling device | |
| CN103447965A (en) | Gantry filter press for cooling liquid centralized filtering and chip removal system | |
| CN220007034U (en) | Central water outlet unit | |
| CN214685519U (en) | Workshop machine tool sweeps processing system | |
| CN214304586U (en) | Splash-proof multifunctional hydraulic oil tank for engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |