Oil tank capable of eliminating lubricating oil foam
By designing structures such as defoaming filter cartridges, swirling oil troughs, and demisters, the problem of air bubbles mixing into lubricating oil during its flow process was solved, achieving efficient defoaming of the lubricating oil and improving the operational stability and lifespan of the equipment.
Patent Information
- Application Number
- CN202520334123.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-28
AI Technical Summary
During the flow and agitation process, lubricating oil is prone to mixing with air bubbles, which can lead to a decrease in performance, affect mechanical heat dissipation, and may cause equipment failure or even damage.
An oil tank for eliminating lubricating oil foam has been designed, comprising a defoaming filter cartridge, a swirling oil trough, a demister, and a baffle structure. The filter screen breaks up the bubbles, prolonging the residence time of the lubricating oil in the oil tank, and the swirling and baffle structure eliminates the bubbles.
It effectively eliminates air bubbles in lubricating oil, improves the performance of lubricating oil, avoids equipment failure, extends equipment service life, and improves operational stability.
Smart Images
Figure CN223895663U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lubricating oil foam elimination technology, and more specifically, to an oil tank for eliminating lubricating oil foam. Background Technology
[0002] In our daily equipment operation, most mechanical lubrication systems operate in a circulating manner. The oil is filtered through an oil tank and reused. However, during the current working process, the lubricating oil is constantly flowing and circulating for lubrication. When the lubricating oil comes into contact with air and is violently agitated during the flow, air may be mixed into the oil, generating air bubbles. If the lubricating oil does not stay in the oil tank for a sufficient time, these air bubbles will not be eliminated in time, causing the lubricating oil performance to deteriorate, accelerating the oxidation process of the lubricating oil, and affecting the heat dissipation of the machinery. Using lubricating oil with deteriorated performance will cause equipment using the lubricating oil to malfunction, resulting in unstable equipment operation, and in severe cases, even damage to the equipment. Utility Model Content
[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an oil tank that eliminates lubricating oil foam.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an oil tank for eliminating lubricating oil foam, comprising a tank body, an oil return port at the upper part of the tank body, an oil suction port at the lower part of the tank body, a defoaming filter cartridge installed at the outlet of the oil return port, and the tank body being cylindrical; the oil suction port being located on the side of the tank body away from the oil return port; a removable filter screen being provided inside the defoaming filter cartridge; a spiral oil groove being fixed to the inner side wall of the tank body; a demister being fixed to the inner side wall of the tank body along the path of the spiral oil groove, the demister being a bent plate-like structure, the horizontal cross-section of its bent surface being a trapezoidal plate, converging on the side away from the inner side wall of the tank body, and defoaming holes being provided on the side wall of the demister; a baffle being fixed inside the tank body, the baffle being located below the spiral oil groove, dividing the bottom of the tank body, and the oil return port and the oil suction port being located on opposite sides of the plane of the baffle.
[0005] As a further preferred embodiment of this utility model, the defoaming holes gradually enlarge from top to bottom. The denser defoaming holes at the top are used to remove bubbles floating on the liquid surface, while the larger holes at the bottom prevent obstruction of flow and avoid excessive flow velocity that could generate bubbles.
[0006] As a further preferred embodiment of this utility model, the baffle is provided with an upwardly extending anti-impact plate at the tail end of the spiral oil tank.
[0007] As a further preferred embodiment of this utility model, the top of the baffle is provided with serrations, the top and bottom of which are used to puncture floating bubbles and to drain the flow, respectively.
[0008] As a further preferred embodiment of this invention, the tail end of the spiral oil trough is inclined downward on the side near the inner wall of the box, so as to guide the flow through the inner wall of the box and avoid the generation of new bubbles by impact.
[0009] As a further preferred embodiment of this utility model, the defoaming filter cartridge has a detachable replacement port at the end away from the housing, which facilitates filter replacement.
[0010] As a further preferred embodiment of this invention, a sight glass is fixed at the center of the replacement port for observing whether the filter is clogged.
[0011] Technical effects and advantages of the utility model:
[0012] 1. The defoaming filter cartridge can both destroy air bubbles through the internal filter screen and slow down the flow of lubricating oil into the oil tank, thus preventing the generation of new air bubbles.
[0013] 2. By using a spiral oil groove, the lubricating oil enters the oil tank slowly and in a spiraling manner along the spiral oil groove welded to the inner wall of the oil tank. This prolongs the time it takes to enter the oil tank, slows down the falling speed, reduces the oil depth, and reduces the internal pressure of the oil, which facilitates the precipitation of air bubbles. At the same time, it prolongs the storage time to facilitate natural defoaming.
[0014] 3. The installation of a demister further eliminates air bubbles in the lubricating oil as it passes through the swirling oil trough;
[0015] 4. By setting up baffles, the oil suction port and the oil return port are separated into two areas. The defoamed lubricating oil overflows to the oil suction side and is delivered to various equipment through the oil suction port, which prevents impurities from entering the oil suction area. This causes impurities in the oil to settle and improves the lubricating oil return effect.
[0016] In summary, this invention allows the lubricating oil to have sufficient residence time in the oil tank, eliminates air bubbles trapped in the lubricating oil, prevents the lubricating oil from deteriorating and causing malfunctions in the lubrication equipment, improves the operational stability of the equipment, and extends the service life of the equipment. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of an oil tank for eliminating lubricating oil foam according to the present invention.
[0018] Figure 2 This is a schematic diagram of the structure of a defoaming filter cartridge in an oil tank for eliminating foam in lubricating oil according to this utility model.
[0019] Figure 3 This is a schematic diagram of the structure of the baffle and anti-impact plate in the oil tank for eliminating lubricating oil foam according to this utility model.
[0020] Figure 4 This is a schematic diagram of the structure of a demister in an oil tank that eliminates foam in lubricating oil according to the present invention.
[0021] The attached diagram is labeled as follows: 1. Defoaming filter cartridge; 2. Swirling oil trough; 3. Baffle; 4. Defoamer; 5. Oil suction port; 6. Housing; 7. Oil return port; 8. Replacement port; 301. Serrated edge; 302. Anti-impact plate; 401. Defoaming hole; 801. Sight glass. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] See appendix Figure 1-4 As shown, an oil tank for eliminating lubricating oil foam includes a tank body 6. The upper part of the tank body 6 has an oil return port 7, and the lower part has an oil suction port 5. A defoaming filter cartridge 1 is installed at the outlet of the oil return port 7. The tank body 6 is cylindrical. The oil suction port 5 is located on the side of the tank body 6 away from the oil return port 7. A removable filter screen is provided inside the defoaming filter cartridge 1. A spiral oil groove 2 is fixed to the inner wall of the tank body 6. A demister 4 is fixed to the inner wall of the tank body 6 along the path of the spiral oil groove 2. The demister 4 is a bent plate-like structure with a trapezoidal horizontal cross-section of its bent surface, converging on the side away from the inner wall of the tank body 6. Defoaming holes 401 are provided on the side wall of the demister 4. A baffle 3 is fixed inside the tank body 6, located below the spiral oil groove 2, separating the bottom of the tank body 6. The oil return port 7 and the oil suction port 5 are located on opposite sides of the plane of the baffle 3.
[0024] like Figure 4 As shown in the utility model embodiment, the defoaming holes 401 gradually enlarge from top to bottom. The denser defoaming holes 401 at the top are used to remove bubbles floating on the liquid surface, while the larger holes at the bottom prevent obstruction of flow and avoid excessive flow velocity that could generate bubbles.
[0025] like Figure 3 As shown in the utility model embodiment, the baffle 3 is provided with an upward-extending anti-impact plate 302 at the tail end of the spiral oil tank 2. The top of the baffle 3 is provided with serrations 301, the top and bottom of which are used to puncture floating bubbles and guide the flow, respectively.
[0026] like Figure 1 As shown in the utility model embodiment, the tail end of the spiral oil tank 2 is inclined downward on the side near the inner wall of the box 6, so as to guide the flow through the inner wall of the box 6 and avoid the generation of new bubbles by impact.
[0027] like Figure 2 As shown in the utility model embodiment, the defoaming filter cartridge 1 is detachably connected to a replacement port 8 at the end away from the housing 6. The replacement port 8 is fixed to the defoaming filter cartridge 1 by a blind flange, which facilitates the replacement of the filter screen. A sight glass 801 is fixed in the center of the replacement port 8 for observing whether the filter screen is clogged. The above structure is used to observe whether the filter screen is clogged and replace it in time.
[0028] In the working process of this utility model: when the lubricating oil returns to the oil tank, it passes through the defoaming filter cartridge 1 at the end of the return oil pipe, which breaks up air bubbles and slows down the flow rate of the lubricating oil into the oil tank. One end of the defoaming filter cartridge extends out of the oil tank, and the filter element can be visually removed and replaced using an 801 blind flange structure with a sight glass. Then, the lubricating oil flows along the spiral oil groove 2 welded to the inner wall of the tank body 6, causing the lubricating oil to rotate and enter the oil tank. The lubricating oil will be affected by the spiral flow generated by the spiral structure. This spiral flow will continuously shear and stretch the foam, causing the foam film to deform and rupture under the action of the spiral flow. The spiral structure not only generates a certain centrifugal force on the lubricating oil, further promoting the separation and breakage of foam, but also reduces... The lubricating oil flow rate is slowed down, allowing the lubricating oil to flow slowly into the oil tank without causing impact and regenerating bubbles. Defoamers 4 with different opening sizes are set on the outer edge of the spiral oil tank 2. The pore walls of the porous medium will exert surface tension on the foam, making the foam film thinner. On the other hand, since the foam needs to pass through the narrow pores, it will be squeezed and rubbed by the pore walls, which will promote the separation of gas and liquid in the foam and achieve defoaming. A baffle 3 is set at the outlet of the spiral oil tank 2, which separates the oil suction port 5 and the oil return port 7 into two areas. When the lubricating oil containing foam flows through the baffle 3, the sharp edges of the serrated 301 structure at the top will puncture the liquid film when the foam comes into contact with these edges, and the gas will be released rapidly. In addition, the serrated structure 301 can also change the flow state of the liquid and achieve a diversion effect. When the foam flows through the serrated structure 301, its original flow direction and speed will change, and the flow of the liquid will generate shear force, which will also help to destroy the structure of the foam. In summary, this utility model prolongs the residence time of the lubricating oil in the oil tank and can eliminate the air bubbles in the lubricating oil.
[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An oil tank for eliminating lubricating oil foam, comprising a tank body, an oil return port at the upper part of the tank body, an oil suction port at the lower part of the tank body, and a defoaming filter cartridge installed at the outlet of the oil return port, characterized in that, The housing is cylindrical; the oil suction port is located on the side of the housing away from the oil return port; the defoaming filter cartridge has a removable filter screen inside; a spiral oil trough is fixed to the inner wall of the housing; a demister is fixed to the inner wall of the housing along the path of the spiral oil trough, the demister is a bent plate structure, its bent surface has a trapezoidal horizontal cross section, and it tapers away from the inner wall of the housing, the demister has defoaming holes on its side wall; a baffle is fixed inside the housing, the baffle is located below the spiral oil trough, dividing the bottom of the housing, the oil return port and the oil suction port are located on opposite sides of the baffle plane.
2. The oil tank for eliminating lubricating oil foam according to claim 1, characterized in that: The defoaming holes are gradually enlarged from top to bottom.
3. The oil tank for eliminating lubricating oil foam according to claim 1, characterized in that: The baffle is provided with an upward-extending anti-impact plate at the tail end of the spiral oil tank.
4. An oil tank for eliminating lubricating oil foam according to claim 1 or 3, characterized in that: The top of the baffle is serrated.
5. The oil tank for eliminating lubricating oil foam according to claim 1, characterized in that: The tail end of the spiral oil tank slopes downwards near the inner wall of the box.
6. The oil tank for eliminating lubricating oil foam according to claim 1, characterized in that: The defoaming filter cartridge has a detachable replacement port at the end furthest from the housing.
7. An oil tank for eliminating lubricating oil foam according to claim 6, characterized in that: A sight glass is fixed at the center of the replacement port.