CN203532358U - Overhead negative-pressure totally-closed hydraulic oil tank - Google Patents
Overhead negative-pressure totally-closed hydraulic oil tank Download PDFInfo
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- CN203532358U CN203532358U CN201320731190.5U CN201320731190U CN203532358U CN 203532358 U CN203532358 U CN 203532358U CN 201320731190 U CN201320731190 U CN 201320731190U CN 203532358 U CN203532358 U CN 203532358U
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- check valve
- oil tank
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- oil
- air
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Abstract
The utility model provides an overhead negative-pressure totally-closed hydraulic oil tank. An oil inlet and oil return port are formed in the bottom of an oil tank body; an oil filling port is formed in the upper part of the oil tank body; an air cylinder provided with a high-pressure type exhaust check valve is arranged at the upper part of the oil tank body; a metal sealing partition board provided with a negative-pressure type air inlet check valve and a negative-pressure type exhaust check valve is arranged between the oil tank body and the air cylinder; negative-pressure air ports of the negative-pressure type air inlet check valve and the negative-pressure type exhaust check valve are communicated with the oil tank body; and a high-pressure air port of the high-pressure type exhaust check valve is communicated with the air cylinder. The overhead negative-pressure totally-closed hydraulic oil tank has the benefits as follows: the hydraulic oil tank is simple in structure, long in service life and low in post-maintenance cost, by means of the negative pressure oil tank body, air in hydraulic oil is free, so that air content of the hydraulic oil is reduced, further, breathing air is isolated from outside in an air cylinder manner so as to prevent oil pollution, and the reliability of the hydraulic system is improved.
Description
Technical field
The utility model relates to a kind of totally-enclosed hydraulic oil container of loader, in particular for the height of loader, puts the totally-enclosed hydraulic oil container of negative pressure.
Background technique
At present, the hydraulic oil container of loader has non-enclosed and two kinds of structures of totally enclosed type, standing normal pressure or the high pressure of being decided to be of non-enclosed tank internal pressure, breathe air contacts with hydraulic oil, advantage is simple in structure, and shortcoming is in hydraulic oil, not only to incorporate large quantity of air easily to cause the air of cavitation phenomenon but also breathing easily to hydraulic oil, to bring pollution; Totally enclosed type Oiltank structure is as Chinese Patent Application No. be 201210232488.1 the utility model patent of " totally-enclosed hydraulic oil container ", standing normal pressure or the high pressure of being decided to be of tank internal pressure, breathe air and hydraulic oil are respectively in container separately, advantage is that hydraulic oil and air insulated make hydraulic oil avoid breathe air pollution, shortcoming is in hydraulic oil, not only to incorporate large quantity of air easily to cause the rubber sealant life-span that cavitation phenomenon but also Oiltank structure are complicated, oil gas isolation mounting is used short, and later maintenance expense is high.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, can be by free of air in hydraulic oil out and then reduce in hydraulic oil air content and by gas receiver form, breathe air be isolated from the outside and avoid the height of oil contamination to put the totally-enclosed hydraulic fluid tank of negative pressure.
The purpose of this utility model object is achieved in that filler opening and return opening are arranged at oil box bottom, oil filler is arranged at the top of oil box, the top of oil box is the gas receiver with high voltage type exhaust check valve, between oil box and gas receiver, there is the metal sealing dividing plate with negative pressure type breather check valve and negative pressure type exhaust check valve, the negative pressure gas port of negative pressure type breather check valve and negative pressure type exhaust check valve communicates with oil box, and the high pressure gas port of high voltage type exhaust check valve communicates with gas receiver.
Beneficial effect: this hydraulic oil tank structure is simple, long service life, later maintenance expense is low, by the oil box of negative pressure
By free of air in hydraulic oil out and then reduce in hydraulic oil air content and by gas receiver form, breathe air be isolated from the outside and avoid oil contamination, improved the reliability of hydraulic system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1 oil box, 2 gas receivers, 3 metal sealing dividing plates, 4 one-way valves, 5 negative pressure type breather check valves, 6 negative pressure type exhaust check valves, 7 oil fillers, 8 filler openings, 9 return openings in figure.
Embodiment
Below by embodiment, and by reference to the accompanying drawings the technical solution of the utility model is done further and illustrated.
Embodiment: filler opening 8 and return opening 9 are arranged at oil box 1 bottom, oil filler 7 is arranged at the top of oil box 1, the top of oil box 1 is the gas receiver 2 with high voltage type exhaust check valve 4, between oil box 1 and gas receiver 2, there is the metal sealing dividing plate 3 with negative pressure type breather check valve 5 and negative pressure type exhaust check valve 6, the negative pressure gas port of negative pressure type breather check valve 5 and negative pressure type exhaust check valve 6 communicates with oil box 1, and the high pressure gas port of high voltage type exhaust check valve 4 communicates with gas receiver 2.
As shown in Figure 1, gas receiver 2 is arranged on oil box 1 top, in the middle of gas receiver 2 and oil box 1, there is metal sealing dividing plate 3, metal sealing dividing plate 3 is by the interior hydraulic oil of oil box 1 and the interior air insulated of gas receiver 2, negative pressure type breather check valve 5 and negative pressure type exhaust check valve 6 are installed on metal sealing dividing plate 3, negative pressure type breather check valve 5 and negative pressure type exhaust check valve 6 negative pressure gas ports communicate with oil box 1, and high pressure gas port communicates with gas receiver 2.By negative pressure type breather check valve 5 and negative pressure type exhaust check valve 6, control negative pressure pressure, make it remain on constant default negative pressure value, pump causes the interior formation negative pressure of liquid level decline oil box 1 from oil outlet 9 oil suctions, negative pressure value during lower than default negative pressure value the interior air of gas receiver 2 by negative pressure type breather check valve 5, enter in oil box 1 and make oil box 1 internal pressure reach default negative pressure value; Hydraulic system causes liquid level rising oil box 1 internal pressure to raise from return opening 9 oil returns, negative pressure value during higher than default negative pressure value the interior air of oil box 1 by negative pressure type exhaust check valve 6, the interior air of oil box 1 is discharged in gas receiver 2 until oil box internal pressure reaches default negative pressure value.
This hydraulic oil container is a kind ofly to reduce hydraulic oil air content in hydraulic oil container and hydraulic oil and the isolated height of outside air are put to (oil box oil outlet position on equipment on higher than pump inlet port position) totally-enclosed hydraulic oil container of negative pressure (lower than atmospheric pressure).
Claims (1)
1. put the totally-enclosed hydraulic oil container of negative pressure for one kind high, filler opening and return opening are arranged at oil box bottom, oil filler is arranged at the top of oil box, it is characterized in that: the top of oil box is the gas receiver with high voltage type exhaust check valve, between oil box and gas receiver, there is the metal sealing dividing plate with negative pressure type breather check valve and negative pressure type exhaust check valve, the negative pressure gas port of negative pressure type breather check valve and negative pressure type exhaust check valve communicates with oil box, and the high pressure gas port of high voltage type exhaust check valve communicates with gas receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731190.5U CN203532358U (en) | 2013-11-19 | 2013-11-19 | Overhead negative-pressure totally-closed hydraulic oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731190.5U CN203532358U (en) | 2013-11-19 | 2013-11-19 | Overhead negative-pressure totally-closed hydraulic oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532358U true CN203532358U (en) | 2014-04-09 |
Family
ID=50418571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731190.5U Withdrawn - After Issue CN203532358U (en) | 2013-11-19 | 2013-11-19 | Overhead negative-pressure totally-closed hydraulic oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532358U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591059A (en) * | 2013-11-19 | 2014-02-19 | 徐工集团工程机械股份有限公司科技分公司 | High-placed negative-pressure totally-enclosed hydraulic oil tank |
| CN109737118A (en) * | 2019-02-12 | 2019-05-10 | 安徽合力股份有限公司 | A kind of thermometric expanding plug for closed type hydraulic oil tank |
-
2013
- 2013-11-19 CN CN201320731190.5U patent/CN203532358U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591059A (en) * | 2013-11-19 | 2014-02-19 | 徐工集团工程机械股份有限公司科技分公司 | High-placed negative-pressure totally-enclosed hydraulic oil tank |
| CN103591059B (en) * | 2013-11-19 | 2015-09-16 | 徐工集团工程机械股份有限公司科技分公司 | Height puts the totally-enclosed hydraulic oil container of negative pressure |
| CN109737118A (en) * | 2019-02-12 | 2019-05-10 | 安徽合力股份有限公司 | A kind of thermometric expanding plug for closed type hydraulic oil tank |
| CN109737118B (en) * | 2019-02-12 | 2024-02-09 | 安徽合力股份有限公司 | Temperature-measuring and air-discharging plug for closed hydraulic oil tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20150916 |
|
| RGAV | Abandon patent right to avoid regrant |