Semi-enclosed fuel tank
By designing a semi-enclosed oil tank, the use of the middle partition plate and the air-floating cover to reduce air contact with the oil, combined with multiple detection and oil return ports, the serious oil pollution problem in the hydraulic system is solved, significantly reducing the degree of pollution and faults frequency extends the service life of the machine.
Patent Information
- Application Number
- CN202010214825.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-03-24
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2040-03-24
AI Technical Summary
The oil tanks in the existing hydraulic systems have caused pollutants in the air to enter due to ventilation holes, resulting in serious oil pollution and insufficient purification capacity of the filter, resulting in frequent mechanical failures and shortened life.
A semi-enclosed oil tank is designed, including an oil tank body and an upper cover, with a magnetic oil drain screw plug at the bottom, a middle partition plate and an air-floating cover inside, and the inner cavity of the oil tank is divided into a lower oil chamber, an oil chamber and an air-conditioning chamber. The cavity, the central partition plate cooperates with the oil tank to form an annular sewage tank, and the air-floating cover floats on the liquid surface to reduce the contact between the air and the oil, and sets multiple detection and return oil ports to purify the oil.
By reducing the contact area between oil and air, the pollutant entry rate is reduced, and the incoming particulate matter is deposited and filtered, the contamination of oil is significantly reduced and the mechanical life is extended.
Smart Images
Figure CN111379751B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of oil tanks, and in particular to a semi-enclosed oil tank. Background Art
[0002] At present, high-performance construction machinery plays an important role in various construction projects in my country, but various faults and failures that often occur have also been troubling various user departments. According to statistics, among all kinds of machinery, 40% of the faults are caused by hydraulic systems, and more than 70% of the faults in hydraulic systems are caused by oil contamination. From this ratio, the pollution problem of hydraulic oil has become the main obstacle to the development of hydraulic technology. Reducing the first-level oil contamination can double the life of the machine, so controlling oil contamination has become a key technology at present.
[0003] In a hydraulic system with an open oil tank, the oil tank vent is the main channel for pollutants in the atmosphere to enter the system. Due to the effect of wind, there are countless dust particles in the natural air that are invisible to the naked eye. Particles smaller than 40μm float in the air for a long time. With the breathing of the hydraulic oil tank, a large number of particles flow into the oil tank through the vent. These pollutants quickly enter the hydraulic oil in the oil tank without any hindrance, accelerating the wear of system components and generating a large number of new pollutants. The air filter installed on the oil tank and the oil filter in the system have limited filtering capacity and pollution holding capacity. In outdoor work, the intrusion of small particle pollutants will quickly exceed the purification capacity of the oil filter, causing the oil contamination to always be at a high level, that is, far exceeding the highest level of the NAS1638 standard, resulting in a shortened system life, increased wear, and frequent failures. Summary of the invention
[0004] In order to solve the problems existing in the prior art, the present invention proposes a semi-enclosed oil tank with a simple and compact structure so as to reduce the contamination of the oil.
[0005] In order to achieve the above-mentioned purpose, the present invention proposes a semi-enclosed oil tank, including an oil tank body and an oil tank upper cover, a magnetic oil drain plug is provided at the bottom of the oil tank body, an air filter is provided on the oil tank upper cover, a middle partition plate and an air flotation cover are provided in the oil tank body from bottom to top, and the inner cavity of the oil tank body is divided into a lower oil cavity, an upper oil cavity and an air cavity from bottom to top by the middle partition plate and the air flotation cover, the outer edge of the middle partition plate is connected to the inner wall of the oil tank body, the middle area of the middle partition plate is arched upward, and a through hole is provided in the middle area of the middle partition plate, and the lower oil cavity and the air cavity are connected by the through hole. The upper oil chamber, the middle partition and the oil tank body cooperate with each other to form an annular dirt collecting groove, the diameter of the air separation flotation cover is slightly smaller than the inner diameter of the oil tank body, and it can float on the liquid surface and float up and down with the liquid surface, and the oil tank body is respectively provided with an oil detection suction port, an oil detection return port, an oil purification equipment suction port, an oil purification equipment return port, a system oil suction port and a system oil return port, wherein the oil detection suction port and the oil purification equipment suction port are arranged on the oil tank body at the bottom of the upper oil chamber, and the oil detection return port, the oil purification equipment return port, the system oil suction port and the system oil return port are all arranged on the oil tank body at the lower oil chamber.
[0006] The beneficial effect of this solution of the present invention is that the above-mentioned semi-enclosed oil tank can greatly reduce the contact area between the oil and the air entering the oil tank through structural design, greatly slow down the speed of pollutants in the air entering the oil, and can deposit and filter some of the high-density particles that have entered the oil again. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 The figure shows the appearance of the semi-enclosed oil tank involved in the present invention.
[0008] Figure 2 The figure shows a schematic diagram of the internal structure of the semi-enclosed oil tank involved in the present invention.
[0009] Figure markings: 1-oil tank body, 2-oil tank upper cover, 3-air filter, 4-magnetic oil drain plug, 5-oil detection suction port, 6-oil detection oil return port, 7-middle partition, 8-air flotation cover, 9-lower oil chamber, 10-upper oil chamber, 11-air chamber, 12-dirt tank, 13-oil purification equipment suction port, 14-oil purification equipment oil return port, 15-system oil suction port, 16-system oil return port. DETAILED DESCRIPTION
[0010] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.
[0011] like Figure 1-2As shown, the semi-enclosed oil tank involved in the present invention includes an oil tank body 1 and an oil tank cover 2, a magnetic oil drain plug 4 is provided at the bottom of the oil tank body 1, and an air filter 3 is provided on the oil tank cover 2. The above structure is the same as the structure of an ordinary open oil tank in the prior art, and a more detailed description is not given here.
[0012] The oil tank body 1 is provided with a middle partition plate 7 and an air flotation cover 8 from bottom to top, and the inner cavity of the oil tank body 1 is divided into a lower oil cavity 9, an upper oil cavity 10 and an air cavity 11 from bottom to top by the middle partition plate 7 and the air flotation cover 8. The outer edge of the middle partition plate 7 is connected to the inner wall of the oil tank body 1, the middle area of the middle partition plate 7 is arched upward, and a through hole is provided in the middle area of the middle partition plate 7, and the lower oil cavity 9 and the upper oil cavity 10 are connected by the through hole. The middle partition plate 7 and the oil tank body 1 cooperate with each other to form an annular dirt receiving groove 12, so as to deposit and filter the pollutants entering the upper oil cavity 10. The diameter of the air flotation cover 8 is slightly smaller than the inner diameter of the oil tank body 1, and it can float on the liquid surface and float up and down with the liquid surface, so as to prevent large-area contact between air and oil and slow down the speed of pollutants in the air entering the oil. The diameter of the air-trap cover 8 is slightly smaller than the inner diameter of the oil tank body 1, which means that the diameter of the air-trap cover 8 is smaller than the inner diameter of the oil tank body 1, but only a gap is left between the two to allow the air-trap cover 8 to float up and down with the liquid level.
[0013] The oil tank body 1 is provided with an oil detection suction port 5, an oil detection return port 6, an oil purification device suction port 13, an oil purification device return port 14, a system suction port 15 and a system return port 16, wherein the oil detection suction port 5 and the oil purification device suction port 13 are arranged on the oil tank body 1 at the bottom of the upper oil chamber 10, so as to make the oil detection more accurate and enable the oil purification device to absorb the pollutants in the dirt tank 12 as much as possible. The oil detection return port 6, the oil purification device return port 14, the system suction port 15 and the system return port 16 are all arranged on the oil tank body 1 at the lower oil chamber 9 to ensure that the system uses the cleanest oil source in the oil tank. The arrangement of the oil detection suction port 5, the oil detection return port 6, the oil purification device suction port 13 and the oil purification device return port 14 can detect and purify the hydraulic oil at any time. The magnetic oil drain plug 4 disposed at the bottom of the oil tank body 1 can further ensure the cleanliness of the oil in the lower oil chamber 9 and facilitate the maintenance of the oil tank.
[0014] The semi-enclosed oil tank involved in the present invention can greatly reduce the contact area between the oil and the air entering the oil tank through structural design, greatly slow down the speed of pollutants in the air entering the oil, and can deposit and filter some of the high-density particles that have entered the oil again to reduce the contamination of the oil.
Claims
1. A semi-enclosed fuel tank, characterized in that: The invention comprises an oil tank body and an oil tank upper cover, wherein a magnetic oil drain plug is arranged at the bottom of the oil tank body, an air filter is arranged on the oil tank upper cover, a middle partition plate and an air flotation cover are arranged in sequence from bottom to top in the oil tank body, and the inner cavity of the oil tank body is divided into a lower oil cavity, an upper oil cavity and an air cavity from bottom to top by the middle partition plate and the air flotation cover, the outer edge of the middle partition plate is connected to the inner wall of the oil tank body, the middle area of the middle partition plate is arched upward, and a through hole is arranged in the middle area of the middle partition plate, the lower oil cavity and the upper oil cavity are connected by the through hole, and the middle partition plate is connected to the oil tank The bodies cooperate with each other to form an annular dirt collecting groove. The diameter of the air-isolating flotation cover is slightly smaller than the inner diameter of the oil tank body. It can float on the liquid surface and float up and down with the liquid surface. The oil tank body is respectively provided with an oil detection suction port, an oil detection return port, an oil purification equipment suction port, an oil purification equipment oil return port, a system oil suction port and a system oil return port. The oil detection suction port and the oil purification equipment suction port are arranged on the oil tank body at the bottom of the upper oil cavity, and the oil detection return port, the oil purification equipment oil return port, the system oil suction port and the system oil return port are all arranged on the oil tank body at the lower oil cavity.