CN112483485A - Anti-emulsification hydraulic oil tank and engineering machinery - Google Patents
Anti-emulsification hydraulic oil tank and engineering machinery Download PDFInfo
- Publication number
- CN112483485A CN112483485A CN202011472857.5A CN202011472857A CN112483485A CN 112483485 A CN112483485 A CN 112483485A CN 202011472857 A CN202011472857 A CN 202011472857A CN 112483485 A CN112483485 A CN 112483485A
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- Prior art keywords
- oil tank
- air
- hydraulic oil
- tank
- emulsification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an anti-emulsification hydraulic oil tank and an engineering machine, which comprise an oil tank, an oil return pipe positioned at the upper part of the oil tank, an aerator and a hydraulic oil switch valve arranged at the bottom of the oil tank, wherein a ventilation unit in the oil tank comprises an air pressure source, a first air filter, an air dryer, an air storage tank, a gas switch valve, a pressure reducing valve, a pressure gauge and a second air filter which are connected in sequence, and the ventilation unit is connected with an air inlet arranged above the oil tank. After the dry air enters the oil tank directionally, the dry air can drive water vapor in the air in the oil tank to leave the oil tank, and meanwhile, the water vapor in the environment is isolated from flowing in, so that the purposes of draining water and preventing water from entering are achieved, and the emulsification of hydraulic oil is prevented.
Description
Technical Field
The invention relates to an anti-emulsification hydraulic oil tank and an engineering machine, and belongs to the technical field of hydraulic oil tanks.
Background
Hydraulic oil emulsification is a common, but unavoidable, problem in everyday work. Generally, the main reasons for the emulsification and deterioration of hydraulic oil are that water molecules are mixed in the hydraulic oil, or water is mixed in the hydraulic oil carelessly during storage due to improper use. When a vehicle works in a humid environment, as the hydraulic oil tank is communicated with the air, part of humid air enters the hydraulic oil tank, water vapor in the humid air meets the side wall of the oil tank and is condensed into water to flow into hydraulic oil, and the water is discharged in time to cause the emulsification and deterioration of the hydraulic oil.
The oil filler hole is done concurrently to the blow vent at current hydraulic oil tank top, the valve can be installed as the oil drain in the bottom, because the density of water is greater than hydraulic oil, the oil tank bottom can be sunk to most condensate water, need in time put the condensate water of bottom through the oil drain when bottom water accumulation to the certain degree, but a lot of users fail to strictly in time turn the water according to the operating requirement, cause the profit to act on for a long time easily and lead to the hydraulic oil emulsification rotten, hydraulic oil when in the hydraulic tank takes place rotten after, need emit fluid from the oil drain in the oil tank, clean up the oil tank again, add new hydraulic oil again, the method wastes time and energy, very big reduction work efficiency, still cause the waste of resource simultaneously. As the water inflow of the oil tank is inevitable, the prior art has the problem that the water in the hydraulic system cannot be discharged in time.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an anti-emulsification hydraulic oil tank and an engineering machine.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides an anti-emulsification hydraulic oil tank, which comprises an oil tank, an oil return pipe positioned at the upper part of the oil tank, a breather, a hydraulic oil switch valve and an oil pump, wherein the hydraulic oil switch valve and the oil pump are arranged at the bottom of the oil tank, the oil tank also comprises a breather unit, and the breather unit comprises: the air dryer comprises an air pressure source, a first air filter, an air dryer, an air storage tank, a gas switch valve, a pressure reducing valve, a pressure gauge and a second air filter which are connected in sequence, wherein the ventilation unit is connected with an air inlet formed in an oil tank.
Furthermore, a sensor is arranged below the oil tank, and the output end of the sensor is connected with the gas switch valve through a controller.
Further, the sensor is any one of a temperature sensor, a humidity sensor or a pressure sensor.
Further, the gas switch valve is one of a pneumatic valve, a manual valve and a proportional solenoid valve.
Further, the gas switch valve is arranged in a manual or automatic switch mode.
The invention also provides engineering machinery which adopts any one of the anti-emulsification hydraulic oil tanks and comprises a concrete pump truck, a crane, an excavator and other mechanical equipment with the hydraulic oil tank.
Compared with the prior art, the invention has the following beneficial effects:
according to the anti-emulsification hydraulic oil tank and the engineering machinery, the ventilation unit is arranged to ventilate the oil tank, so that water vapor in the oil tank is discharged, and the emulsification of the water vapor in the oil tank is avoided;
the invention changes the path of air entering the oil tank, and the air dryer and the filter are arranged, thereby preventing the ambient air from flowing to the hydraulic oil tank and avoiding the emulsification caused by external water vapor;
the invention not only accelerates the air flow speed in the inner cavity of the oil tank, but also accelerates the heat in the tank body to flow out, thereby accelerating the cooling speed of the hydraulic oil;
when the gas volume to the oil tank is greater than the discharge volume, the oil pressure in the oil tank can be greater than the ordinary pressure this moment, can improve the absorption efficiency of oil pump, prevents that the oil pump from pumping empty, and then plays the effect of protection oil pump.
Drawings
FIG. 1 is a schematic diagram of a prior art hydraulic tank;
FIG. 2 is a schematic diagram of a hydraulic structure of an anti-emulsification hydraulic oil tank in the embodiment of the invention;
in the figure: 1. the air dryer comprises an air pressure source, 2, a first air filter, 3, an air dryer, 4, an air storage tank, 5, an air switch valve, 6, a pressure reducing valve, 7, a pressure gauge, 8, a second air filter, 9, an oil return pipe, 10, a breather, 11, a sensor, 12, an oil tank, 13, an oil pump, 14, a hydraulic oil switch valve, 15 and a controller.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Fig. 1 is a schematic structural diagram of a hydraulic oil tank in the prior art, in which only a single vent is provided at the top of the oil tank, and the single vent is also used as an oil filling port, and a hydraulic oil switch valve 14 is provided at the bottom. The breather 10 is arranged at the breather hole, the inner cavity of the oil tank is communicated with the outside atmosphere through the breather, and the oil tank is a single-air-port hydraulic oil tank.
In the prior art, a vent hole at the top of a hydraulic oil tank is also used as an oil filling port, a hydraulic oil switch valve 14 is arranged at the bottom of the hydraulic oil tank and is used as an oil discharging port, and most of condensed water sinks to the bottom of the oil tank 12 due to the fact that the density of water is higher than that of the hydraulic oil, so that the condensed water at the bottom needs to be discharged through the hydraulic oil switch valve 14 in time the next day after each work; however, many users cannot discharge water in time according to the operation requirements strictly in the using process, so that the oil and water act for a long time to cause the emulsification and deterioration of the hydraulic oil. After hydraulic oil in the hydraulic oil tank goes bad, can generally be discharged oil liquid from the oil discharge opening in the oil tank 12, clean up oil tank 12 again, add new hydraulic oil again, this method is wasted time and energy, very big reduction work efficiency, still cause the waste of resource simultaneously.
As shown in fig. 2, which is a schematic view of a hydraulic structure of an anti-emulsification hydraulic oil tank according to an embodiment of the present invention, the anti-emulsification hydraulic oil tank includes an oil tank 12, an oil return pipe 9 located at an upper portion of the oil tank, an air breather 10, and a hydraulic oil switch valve 14 installed at a bottom of the oil tank, wherein the oil tank 12 further includes an air vent unit, the air vent unit includes an air pressure source 1, a first air filter 2, an air dryer 3, an air storage tank 4, an air switch valve 5, a pressure reducing valve 6, a pressure gauge 7, and a second air filter 8, which are connected in sequence, and the air vent unit is connected to an air.
The invention leads the gas in the pressure source 1 into the hydraulic oil tank, so that the gas in the hydraulic oil tank is in a directional flowing state. After dry air enters the oil tank, the dry air carries water vapor in the air inside the oil tank to leave the oil tank 12 from the breather 10, so that the purpose of draining is achieved, meanwhile, the water vapor in the environment is isolated from flowing in, and the emulsification of hydraulic oil is prevented.
The sensor 11 on the oil tank is connected with the controller 15, the other end of the controller 15 is connected with the gas switch valve 5, and the controller 15 controls the opening and closing of the gas circuit valve 5 through signals given by the sensor 11, so that whether the oil tank 12 is supplied with gas or not is controlled.
The pressure reducing valve 6 can stabilize the pressure of the gas path after being reduced by the pressure reducing valve and keep the pressure at a set value, and the pressure gauge 7 is convenient for reading the pressure of the oil tank 12.
The sensor 11 on the hydraulic oil tank can be installed or not, wherein the sensor can be installed on the side, the top and the bottom of the oil tank, or placed in the hydraulic oil liquid body, or floated on the liquid level, or suspended in other positions such as an upper cavity in the oil tank.
The gas switch valve 5 may be provided or not, and the gas switch valve 5 may be a manual switch, an automatic switch, or other devices with the function; the sensor 11 on the oil tank 12 can be a temperature sensor, a humidity sensor, a pressure sensor and the like; the oil tank 12 is applied to other construction machines having a hydraulic oil tank, such as a concrete pump truck, a crane, and an excavator.
The present invention accelerates the circulation of air inside the fuel tank 12 by ventilating the inside of the fuel tank. The temperature of the hydraulic oil can be increased under the action of the oil pump 13 and the actuating element, the temperature sensor is arranged on the hydraulic oil tank, and when the temperature of the oil rises to a certain value, the program can control the gas switch valve 5 to be opened, so that the air in the oil tank 12 is driven to flow outwards. After the dry air enters the oil tank in a directional mode, the dry air can take the water vapor in the air inside the oil tank to leave the oil tank 12 from the breather 10, so that the purpose of draining is achieved, meanwhile, the water vapor in the environment is isolated from flowing in, and the emulsification of hydraulic oil is prevented.
The ventilation into the oil tank 12 is equivalent to the acceleration of the flow speed of air in the inner cavity of the oil tank, and the outward flowing of heat in the tank body is accelerated, so that the cooling speed of hydraulic oil is accelerated.
When the amount of gas flowing to the oil tank 12 is larger than the discharge amount, the oil pressure in the oil tank 12 is larger than the normal pressure, so that the oil absorption efficiency of the oil pump 13 is effectively improved, the oil pump 13 is prevented from being sucked empty, and the oil pump 13 is protected.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. An anti-emulsification hydraulic oil tank comprises an oil tank (12), an oil return pipe (9) positioned at the upper part of the oil tank, a breather (10), a hydraulic oil switch valve (14) and an oil pump (13) which are arranged at the bottom of the oil tank,
characterized in that the tank (12) further comprises a venting unit comprising:
the air dryer comprises an air pressure source (1), a first air filter (2), an air dryer (3), an air storage tank (4), a gas switch valve (5), a pressure reducing valve (6), a pressure gauge (7) and a second air filter (8) which are connected in sequence, wherein the air inlet formed by the air ventilation unit and an oil tank is connected.
2. Anti-emulsification hydraulic oil tank according to claim 1, characterized in that a sensor (11) is arranged below the oil tank, and the output end of the sensor (11) is connected with the gas switch valve (5) through a controller (15).
3. An anti-emulsification hydraulic oil tank according to claim 2 wherein said sensor (11) is any one of a temperature sensor, a humidity sensor or a pressure sensor.
4. An anti-emulsifying hydraulic tank according to claim 1, characterized in that said gas switching valve (5) is one of a pneumatic valve, a manual valve, a proportional solenoid valve.
5. Anti-emulsification hydraulic oil tank according to claim 4 wherein the gas switch valve (5) is a manual or automatic switch arrangement.
6. An engineering machine, characterized in that the anti-emulsification hydraulic oil tank of any one of claims 1-5 is adopted, and the engineering machine comprises a concrete pump truck, a crane and an excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011472857.5A CN112483485A (en) | 2020-12-15 | 2020-12-15 | Anti-emulsification hydraulic oil tank and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011472857.5A CN112483485A (en) | 2020-12-15 | 2020-12-15 | Anti-emulsification hydraulic oil tank and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112483485A true CN112483485A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011472857.5A Pending CN112483485A (en) | 2020-12-15 | 2020-12-15 | Anti-emulsification hydraulic oil tank and engineering machinery |
Country Status (1)
| Country | Link |
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| CN (1) | CN112483485A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294410A (en) * | 2021-05-25 | 2021-08-24 | 珠海格力智能装备有限公司 | Hydraulic station and numerical control machine tool |
| CN115405591A (en) * | 2022-08-12 | 2022-11-29 | 华电电力科学研究院有限公司 | Dynamic control method for moisture of fire-resistant oil in power plant |
-
2020
- 2020-12-15 CN CN202011472857.5A patent/CN112483485A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294410A (en) * | 2021-05-25 | 2021-08-24 | 珠海格力智能装备有限公司 | Hydraulic station and numerical control machine tool |
| CN113294410B (en) * | 2021-05-25 | 2024-10-11 | 珠海格力智能装备有限公司 | Hydraulic station and numerical control machine tool |
| CN115405591A (en) * | 2022-08-12 | 2022-11-29 | 华电电力科学研究院有限公司 | Dynamic control method for moisture of fire-resistant oil in power plant |
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