Aviation kerosene-water separating and filtering device

Abstract

The utility model relates to the technical field of filtering, in particular to an aviation kerosene-water separating and filtering device which comprises a second filtering mechanism, the second filtering mechanism comprises a second filtering cylinder, and an oil outlet channel is arranged in the second filtering cylinder and used for allowing aviation kerosene filtered by water to flow out. A water collecting groove is formed in the position, located on the peripheral side of the oil outlet channel, in the second filter cartridge and used for collecting water filtered out by the aviation kerosene, a second-stage filter screen is arranged on the oil outlet channel and used for filtering water in the aviation kerosene, and the second-stage filter screen is obliquely arranged in the second filter cartridge and used for filtering water in the aviation kerosene. And the second-stage filter screen is used for guiding water filtered on the second-stage filter screen into the water collecting tank.

Description

Technical Field

[0001] The utility model relates to the technical field of filtration, in particular to a kerosene oil-water separation and filtration device. Background Art

[0002] During the refining, storage and transportation of aviation kerosene, water and impurities will be mixed in varying degrees, and these impurities will affect the operation of aircraft engines. For example, water will cause corrosion of fuel system components, growth of microorganisms and icing; solid impurities will cause wear of pumps, jamming of control valves, blockage of oil filters and erosion of nozzles, etc. These phenomena will cause wear and affect the service life of the engine in mild cases, and will cause the engine to flame out and result in a catastrophic accident of plane crash and death in severe cases. Therefore, these water and impurities in kerosene must be removed before use to meet the use standards.

[0003] At present, the equipment used to remove water and impurities in kerosene is a kerosene filter separator. In the prior art, two-stage filters are usually arranged inside the filter separator. Kerosene enters the filter separator from the inlet, first passes through the first-stage filter to filter the impurities in the kerosene, and the preliminarily filtered kerosene then passes through the second-stage filter screen. The material of the second-stage filter screen includes polytetrafluoroethylene (PTFE), and its surface property is lipophilic and hydrophobic, that is, kerosene can pass through smoothly, but water will be intercepted on the second-stage filter screen, and the kerosene separated from water by the second-stage filter screen then flows out through the outlet of the filter separator.

[0004] However, the filter separator in the prior art mainly has the following defects:

[0005] 1. In the prior art, the filter cylinder of the filter separator is usually integrally formed, and the first-stage filter for filtering impurities and the second-stage filter screen for separating water are arranged in two stages, that is, two different filters, and they are both arranged inside the filter cylinder. This makes the workload large and time-consuming and laborious when installing and disassembling the filters.

[0006] 2. In the prior art, the second-stage filter screen is usually horizontally arranged inside the filter classifier, so that the separated water is easy to accumulate on the surface of the second-stage filter screen, making it inconvenient to drain the water. Summary of the Utility Model

[0007] The technical problem to be solved by the utility model is to provide a kerosene oil-water separation and filtration device.

[0008] The utility model is realized by the following technical solutions:

[0009] A jet fuel water separation and filtration device includes a second filtration mechanism. The second filtration mechanism includes a second filter cylinder. An oil outlet channel is arranged in the second filter cylinder for the jet fuel after water filtration to flow out. A water collecting tank is arranged on the circumference of the oil outlet channel in the second filter cylinder for collecting the water filtered out from the jet fuel. A second-stage filter screen is arranged on the oil outlet channel for filtering the water in the jet fuel. The second-stage filter screen is inclined in the second filter cylinder for guiding the water filtered on the second-stage filter screen into the water collecting tank.

[0010] As a further improvement of the present utility model, a first filtration mechanism is arranged on the second filtration mechanism for filtering impurities in the jet fuel. An oil outlet hole is opened at the lower end of the first filtration mechanism, and the oil outlet hole is aligned with the higher end of the second-stage filter screen.

[0011] As a further improvement of the present utility model, the first filtration mechanism includes a first filter cylinder detachably arranged on the second filter cylinder. A first-stage filter screen is arranged in the first filter cylinder for filtering impurities in the jet fuel. An installation boss extending inward is arranged at the lower end of the first filter cylinder. A temporary storage plate is arranged on the installation boss. The space between the temporary storage plate and the first-stage filter screen forms a temporary storage chamber for temporarily storing the jet fuel after filtering impurities. The oil outlet hole is opened on the temporary storage plate.

[0012] As a further improvement of the present utility model, a clamping groove is arranged at the lower end of the first filter cylinder for the lower end of the first filter cylinder to be clamped into the upper end of the second filter cylinder along a preset direction.

[0013] As a further improvement of the present utility model, at least one positioning groove is arranged at the bottom of the clamping groove of the first filter cylinder or at the upper end of the second filter cylinder;

[0014] At least one positioning pin is arranged at the upper end of the second filter cylinder or at the bottom of the clamping groove of the first filter cylinder. The positioning pin shaft is adapted to the positioning groove so that the oil outlet hole is aligned with the higher end of the second-stage filter screen.

[0015] As a further improvement of the present utility model, at least one first magnetic part is arranged at the bottom of the clamping groove of the first filter cylinder, and at least one second magnetic part is arranged at the upper end of the second filter cylinder. The first magnetic part and the second magnetic part attract each other.

[0016] As a further improvement of the present utility model, a sealing part is arranged between the first filter cylinder and the second filter cylinder.

[0017] As a further improvement of the present utility model, a first mounting ring is provided on the mounting boss, and the first-stage filter screen is disposed between the first mounting ring and the mounting boss.

[0018] As a further improvement of the present utility model, the inclination angle of the second-stage filter screen is 5-10°.

[0019] As a further improvement of the present utility model, a water outlet pipe communicating with the water collecting tank is provided on the side wall of the first filter cylinder, and a control valve is provided on the water outlet pipe.

[0020] Advantages of the present utility model: In the present utility model, the second-stage filter screen is a polytetrafluoroethylene filter screen (lipophilic and hydrophobic, that is, aviation kerosene can pass through smoothly, but moisture will be intercepted above the second-stage filter screen). The second-stage filter screen is inclined and disposed in the second filter cylinder, so that the moisture accumulated on the second-stage filter screen flows to the lower side, and then flows into the water collecting tank, thereby facilitating the discharge of moisture.

[0021] A further effect is that in the present utility model, the oil outlet hole of the first filtering mechanism is aligned with the higher end of the second-stage filter screen, so that aviation kerosene can fall from the oil outlet hole to the higher end of the second-stage filter screen. Then, the aviation kerosene mixed with moisture flows on the second-stage filter screen to the lower end. During the flowing process, the second-stage filter screen filters the aviation kerosene mixed with moisture, and finally the aviation kerosene is filtered into the oil outlet channel; and in this process, since the aviation kerosene mixed with moisture flows from the higher end to the lower end, the flowing stroke of the aviation kerosene mixed with moisture is longer than the stroke from the middle position of the second-stage filter screen to the lower end, that is, the filtered moisture can stay on the second-stage filter screen for a longer time, and thus the second-stage filter screen can better adsorb and filter the aviation kerosene in the oil-water mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings to help understand the purpose and advantages of the present utility model, wherein:

[0023] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0024] Figure 2 is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0025] Figure 3 is a schematic structural diagram of the second filtering mechanism in an embodiment of the present utility model;

[0026] Figure 4 is a schematic structural diagram of the first filtering mechanism in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0028] In this specification, orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc., which are mentioned or may be mentioned, are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may accordingly change depending on their different positions and usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0029] Reference Figures 1 to 4 , what is disclosed in the embodiment of the present utility model is:

[0030] A jet fuel oil-water separation and filtration device, including a second filtration mechanism, on which a first filtration mechanism is provided. The first filtration mechanism is used to filter impurities in the jet fuel, and the second filtration mechanism is used to filter moisture in the jet fuel. Among them, the second filtration mechanism includes a second filter cylinder 1. An oil outlet channel 2 is provided inside the second filter cylinder 1 for the jet fuel after moisture filtration to flow out. A water collection tank 3 is provided on the periphery of the oil outlet channel 2 inside the second filter cylinder 1 for collecting the moisture filtered out from the jet fuel. A second-stage filter screen 4 is provided on the oil outlet channel 2 for filtering moisture in the jet fuel. The second-stage filter screen 4 is inclined inside the second filter cylinder 1 for guiding the moisture filtered on the second-stage filter screen 4 into the water collection tank 3. Specifically, the first filter cylinder 6 includes a filter cylinder main body with a hollow interior. An oil outlet cylinder 101 is provided inside the filter cylinder main body, and the hollow oil outlet cylinder 101 forms the oil outlet channel 2 in this embodiment. Among them, a first connecting boss 102 extends inward from the lower end of the filter cylinder main body, and a second connecting boss 103 extends outward from the lower end of the oil outlet cylinder 101. The first connecting boss 102 and the second connecting boss 103 are connected by bolts. The inner wall of the filter cylinder main body, the outer wall of the oil outlet cylinder 101, and the first connecting boss 102 or the second connecting boss 103 cooperate to form the water collection tank 3. In addition, it should be noted that in the present utility model, the second-stage filter screen 4 is a polytetrafluoroethylene filter screen (oleophilic and hydrophobic, that is, jet fuel can pass through smoothly, but moisture will be intercepted on the second-stage filter screen 4). The second-stage filter screen 4 is inclined inside the second filter cylinder 1 (on the oil outlet cylinder 101), so that the moisture accumulated on the second-stage filter screen 4 flows to the lower side and then flows into the water collection tank 3, thereby facilitating the discharge of moisture.

[0031] In this embodiment, an oil outlet hole 5 is opened at the lower end of the first filtration mechanism, and the oil outlet hole 5 is aligned with the higher end of the second-stage filter screen 4.

[0032] The first filtering mechanism includes a first filter cartridge 6 detachably disposed on the second filter cartridge 1. A first-stage filter screen 7 is arranged inside the first filter cartridge 6 for filtering impurities in the aviation kerosene. An installation boss 8 extending inward is provided at the lower end of the first filter cartridge 6. A temporary storage plate 9 is arranged on the installation boss 8. A space between the temporary storage plate 9 and the first-stage filter screen 7 forms a temporary storage chamber 10 for temporarily storing the aviation kerosene after filtering impurities. The oil outlet hole 5 is opened on the temporary storage plate 9. The first filter cartridge 6 is detachably disposed on the second filter cartridge 1. When installing or disassembling the filter element, the first filtering mechanism or the second filtering mechanism can be disassembled separately to improve efficiency. The specific working principle is as follows: The aviation kerosene mixed with impurities and moisture enters the first filter cartridge 6. At this time, the aviation kerosene mixed with impurities and moisture first passes through the first-stage filter screen 7. The first-stage filter screen 7 filters the impurities in the aviation kerosene. The aviation kerosene after filtering the impurities then enters the temporary storage chamber 10. At this time, there is still moisture in the aviation kerosene. The aviation kerosene mixed with moisture then falls onto the second-stage filter screen 4 through the oil outlet hole 5.

[0033] The specific disassembly structure can be referred to Figure 4 A clamping groove 11 is provided at the lower end of the first filter cartridge 6 for the lower end of the first filter cartridge 6 to be clamped into the upper end of the second filter cartridge 1 along a preset direction. In addition, in order to make the oil outlet hole 5 and the higher end of the second-stage filter screen 4 align relatively when installing, at least one positioning groove 12 is provided at the bottom of the clamping groove 11 of the first filter cartridge 6 or at the upper end of the second filter cartridge 1. At least one positioning pin 13 is provided at the upper end of the second filter cartridge 1 or at the bottom of the clamping groove 11 of the first filter cartridge 6. The axis of the positioning pin 13 is adapted to the positioning groove 12 so that the oil outlet hole 5 and the higher end of the second-stage filter screen 4 are aligned relatively.

[0034] And in this embodiment, for convenient connection, at least one first magnetic member (not shown in the figure) is provided at the bottom of the clamping groove 11 of the first filter cartridge 6, and at least one second magnetic member (not shown in the figure) is provided at the upper end of the second filter cartridge 1. The first magnetic member and the second magnetic member attract each other, so that when the first filter cartridge 6 contacts the second filter cartridge 1, the first magnetic member and the second magnetic member attract each other, that is, the connection between the first filter cartridge 6 and the second filter cartridge 1 is completed, which is convenient for connection. At the same time, if disassembly is required, the user needs to overcome the magnetic force between the first magnetic member and the second magnetic member to be able to disassemble.

[0035] A sealing member (not shown in the figure) is arranged between the first filter cartridge 6 and the second filter cartridge 1. The sealing member is a rubber sealing ring and is arranged between the first filter cartridge 6 and the second filter cartridge 1 to prevent leakage.

[0036] A first mounting ring 15 is provided on the mounting boss 8, and the first-stage filter screen 7 is disposed between the first mounting ring 15 and the mounting boss 8. As shown in the figure, the first mounting ring 15 is mounted on the mounting boss 8 by bolts, and the first-stage filter screen 7 is clamped between the first mounting ring 15 and the mounting boss 8.

[0037] The inclination angle of the second-stage filter screen 4 is 5 - 10°, and in this embodiment, the inclination angle is specifically 5°.

[0038] A water outlet pipe (not shown in the figure) communicating with the water collecting tank 3 is provided on the side wall of the first filter cartridge 6, and a control valve (not shown in the figure) is provided on the water outlet pipe; as shown in the figure, a water outlet hole 15 is provided on the side wall of the first filter cartridge 6, and the water outlet hole 15 communicates with the water outlet pipe, so that after a predetermined amount of water accumulates in the water collecting tank 3, the water can be discharged through the water outlet pipe.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A jet kerosene oil-water separation and filtering device, comprising a second filtering mechanism, characterized in that: The second filtering mechanism comprises a second filter cartridge (1), wherein the second filter cartridge (1) is provided with an oil outlet passage (2) for allowing the aviation kerosene to flow out after water is filtered out, wherein the second filter cartridge (1) is provided with a water collecting trough (3) on the periphery of the oil outlet passage (2) for collecting water filtered out of the aviation kerosene, wherein the oil outlet passage (2) is provided with a second-stage filter screen (4) for filtering water in the aviation kerosene, wherein the second-stage filter screen (4) is obliquely arranged in the second filter cartridge (1) for guiding the water filtered out of the second-stage filter screen (4) into the water collecting trough (3).

2. The kerosene-water separation and filtration device according to claim 1, characterized in that: The second filtering mechanism is provided with a first filtering mechanism, the first filtering mechanism being used to filter impurities in the aviation kerosene, an oil outlet hole (5) being provided at the lower end of the first filtering mechanism, the oil outlet hole (5) being aligned with the higher end of the second-stage filter screen (4).

3. The kerosene-water separation and filtration device according to claim 2, characterized in that: The first filtering mechanism comprises a first filter cartridge (6) detachably mounted on the second filter cartridge (1); a first-stage filter screen (7) is arranged inside the first filter cartridge (6) for filtering impurities in aviation kerosene; a mounting boss (8) extending inward is arranged at the lower end of the first filter cartridge (6); a temporary storage plate (9) is arranged on the mounting boss (8); a temporary storage chamber (10) is formed between the temporary storage plate (9) and the first-stage filter screen (7) for temporarily storing aviation kerosene after filtering out impurities; and the oil outlet hole (5) is provided on the temporary storage plate (9).

4. The kerosene-water separation and filtration device according to claim 3, characterized in that: The lower end of the first filter cartridge (6) is provided with a slot (11) for snapping the lower end of the first filter cartridge (6) into the upper end of the second filter cartridge (1) along a preset direction.

5. The kerosene-water separation and filtration device according to claim 4, characterized in that: The first filter cartridge (6) is provided with at least one positioning groove (12) at the bottom of the clamping groove (11) or at the upper end of the second filter cartridge (1); At least one positioning pin (13) is provided at the upper end of the second filter cartridge (1) or the first filter cartridge (6) at the bottom of the slot (11), and the axis of the positioning pin (13) is matched with the positioning slot (12) so that the oil outlet hole (5) is aligned with the higher end of the second-stage filter screen (4).

6. The kerosene-water separation and filtration device according to claim 4, characterized in that: The first filter cartridge (6) is provided with at least one first magnetic component at the bottom of the slot (11), and the upper end of the second filter cartridge (1) is provided with at least one second magnetic component, and the first magnetic component and the second magnetic component attract each other.

7. The kerosene-water separation and filtration device according to claim 4, characterized in that: A sealing member is provided between the first filter cartridge (6) and the second filter cartridge (1).

8. The kerosene-water separation and filtration device according to claim 3, characterized in that: A first mounting ring (15) is provided on the mounting boss (8), and the first-stage filter screen (7) is provided between the first mounting ring (15) and the mounting boss (8).

9. The kerosene-water separation and filtration device according to claim 1, characterized in that: The second-stage filter (4) has an inclination angle of 5-10°.

10. The jet fuel oil-water separation and filtration device according to claim 3, characterized in that: A water outlet pipe connected to the water collecting tank (3) is provided on the side wall of the first filter cartridge (6), and a control valve is provided on the water outlet pipe.

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