Structure for reducing disassembly space of filter element of filter

Abstract

The utility model discloses a structure for reducing the disassembly space of a filter element of a filter, which comprises the filter element, a filter cup and a system shell, a bottom shaft is arranged at the bottom of the filter cup, one end of the filter element is in clearance fit with the bottom shaft, and the other end of the filter element is in clearance fit with a top shaft on the system shell; inner sealing rings are arranged at the two ends of the filter element; an annular groove is formed in the bottom shaft at the bottom of the filter cup, the section size of the annular groove is smaller than that of the inner sealing ring, the filter element is located between the bottom shaft and the top shaft, the two ends of the filter element are matched in an inserted connection mode and abut against bosses of the bottom shaft and the top shaft respectively, and the upper end of the filter cup is connected with the system shell in an inserted connection mode. An outer sealing ring is arranged between the filter cup and the system shell; the filter is simple in structure and easy to machine, the structure of an original filter can be improved, the filter element and the filter cup are driven to be disassembled synchronously through the designed annular groove, the disassembling space is reduced, and the problem that in a traditional disassembling mode, the filter element needs to be pulled out by stretching out the hand manually is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter element disassembly, in particular to a structure for reducing the disassembly space of a filter element. Background Art

[0002] In aerospace systems, hydraulic and fuel filters play a key role in ensuring system cleanliness and preventing particulate contamination from causing system failures. As the core component of the filter, the filter element needs to be replaced or maintained regularly. Therefore, sufficient disassembly space must be reserved during design to facilitate maintenance operations.

[0003] At present, in the prior art, the two ends of the filter element are sealed with the bottom of the filter cup through sealing rings; however, while the sealing ring prevents oil leakage, it will also generate large friction resistance during the disassembly process, resulting in the filter element being unable to be disassembled synchronously with the filter cup; the conventional disassembly method requires the filter cup to be disassembled to a certain distance first, and then the maintenance personnel manually unplug the filter element. This disassembly method has the following disadvantages: since sufficient space is required for maintenance personnel to manually unplug the filter element, the overall disassembly space is large, which does not meet the requirements of aerospace equipment for compact design; the filter element needs to be pulled out separately, and the additional operation steps increase the maintenance time and affect the system operation efficiency; manual intervention is required, and there is a problem of inconvenience in disassembly, especially in a narrow cabin or inside the equipment, where the operation is difficult; therefore, there is an urgent need for an improved solution that can reduce the filter element disassembly space and improve maintenance efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a structure for reducing the space for disassembling the filter element. The structure is simple and easy to process, and can be improved on the structure of the original filter. Through the designed annular groove, the filter element and the filter cup are driven to be disassembled synchronously, thereby reducing the disassembly space and avoiding the problem of manual labor required to pull out the filter element in the traditional disassembly method, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a structure for reducing the space for disassembling a filter element, comprising a filter element, a filter cup and a system housing, a bottom shaft is arranged at the bottom of the filter cup, one end of the filter element is clearance-matched with the bottom shaft, and the other end of the filter element is clearance-matched with the top shaft on the system housing; inner sealing rings are arranged at both ends of the filter element; and an annular groove is arranged on the bottom shaft at the bottom of the filter cup.

[0006] Furthermore, the cross-sectional dimension of the annular groove is smaller than the cross-sectional dimension of the inner sealing ring.

[0007] Furthermore, the filter element is located between the bottom shaft and the top shaft, and the two ends of the filter element are matched in a plug-in manner, and the two ends of the filter element are respectively in contact with the bosses of the bottom shaft and the top shaft.

[0008] Furthermore, the upper end of the filter cup is connected to the system housing by plugging, and an outer sealing ring is provided between the filter cup and the system housing.

[0009] Furthermore, a fixing hole is provided on the outer boss of the filter cup, and the fixing hole is fixed to the system housing by bolts.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The structure is simple, easy to process, and has low modification cost. It can be improved on the structure of the original filter. Through the designed annular groove, the filter element and the filter cup can be disassembled simultaneously, which reduces the disassembly space and avoids the problem of manual extraction of the filter element in the traditional disassembly method.

[0012] 2. Easy to operate. The filter element can be easily disassembled without additional tools or manual assistance, which simplifies the disassembly process, improves maintenance efficiency and reduces manual operation time.

[0013] 3. The utility model realizes an efficient and convenient maintenance method by optimizing the filter element disassembly structure, thereby improving the overall performance and applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the filter element disassembly process and required disassembly space of the utility model;

[0016] Figure 3 Schematic diagram of the traditional filter element disassembly process and the required disassembly space.

[0017] In the figure: 1 filter element, 2 filter cup, 3 inner sealing ring, 4 annular groove, 5 system housing, 6 fixing hole, 7 outer sealing ring, 8 top shaft, 9 bottom shaft. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] See also Figure 1-3The utility model provides a technical solution: a structure for reducing the disassembly space of the filter element, comprising a filter element 1, a filter cup 2 and a system housing 5. A bottom shaft 9 is arranged at the bottom of the filter cup 2. One end of the filter element 1 is clearance-matched with the bottom shaft 9, and the other end of the filter element 1 is clearance-matched with the top shaft 8 on the system housing; the structure of the filter element 1 is generally composed of an end cover, an inner frame, an outer frame and a filter layer. The specific structure is not described in detail here. Both ends of the filter element 1 are provided with inner sealing rings 3 to form a sealing structure to ensure the sealing performance of both ends of the filter element 1, which can prevent To stop the internal leakage of oil, but the inner sealing ring 3 also generates friction with the filter cup 2 and the system housing 5. The friction at the two places is theoretically the same, which will cause the filter element 1 to be unable to be removed together with the filter cup 2 during the disassembly process; an annular groove 4 is provided on the bottom shaft 9 at the bottom of the filter cup 2. When the filter element 1 is disassembled, the inner sealing ring 3 matched with the bottom shaft 9 is still in a compressed state; when the inner sealing ring 3 passes through the annular groove 4, part of the sealing surface of the inner sealing ring 3 will enter the annular groove 4 due to the rebound effect, thereby driving the filter element 1 and the filter cup 2 to be disassembled simultaneously, reducing the disassembly space.

[0020] The cross-sectional dimension of the annular groove 4 is smaller than that of the inner sealing ring 3 . By designing the annular groove 4 , the friction force action mode of the inner sealing ring 3 is optimized, and the filter cup 2 and the filter element 1 can be disassembled synchronously.

[0021] The size range of the shaped groove 4 can be optimized according to the material and resilience of the inner sealing ring 3 to adapt to different types of filters.

[0022] The filter element 1 is located between the bottom shaft 9 and the top shaft 8. The two ends of the filter element 1 are matched in a plug-in manner, and the two ends of the filter element 1 are respectively in contact with the bosses of the bottom shaft 9 and the top shaft 8 to ensure that they are installed in place. The plug-in manner is convenient for installation and easy inspection and maintenance.

[0023] The upper end of the filter cup 2 is connected to the system housing 5 by plugging, and an outer sealing ring 7 is provided between the filter cup 2 and the system housing 5. The outer sealing ring 7 is used to seal the connection between the filter cup 2 and the system housing 5 to prevent oil leakage and ensure stable operation.

[0024] A fixing hole 6 is provided on the outer boss of the filter cup 2, and the fixing hole 6 is fixed to the system housing 5 by bolts. After being plugged into place, it is ensured to be firmly installed to prevent loosening.

[0025] As attached Figure 2 As shown, when the filter element 1 begins to be disassembled, the inner sealing ring 3 matched with the bottom shaft 9 is still in a compressed state; when passing through the annular groove 4 on the filter cup 2, the inner sealing ring 3 partially enters the annular groove 4 due to the rebound effect, thereby driving the filter element 1 and the filter cup 2 to be disassembled synchronously.

[0026] like Figure 3As shown, in the traditional solution, since the friction force of the sealing rings at both ends is equal, the filter element 1 cannot be disassembled synchronously with the filter cup 2. The filter cup 2 needs to be disassembled to a certain distance before the filter element 1 can be manually pulled out.

[0027] The innovation of the utility model lies in that the sealing ring is cleverly designed to change its stress state during disassembly, thereby achieving synchronous disassembly of the filter element and the filter bowl and optimizing the maintenance process.

[0028] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A structure for reducing the space for disassembling a filter element, comprising a filter element (1), a filter cup (2) and a system housing (5), characterized in that: A bottom shaft (9) is provided at the bottom of the filter cup (2); one end of the filter element (1) is loosely fitted with the bottom shaft (9); the other end of the filter element (1) is loosely fitted with a top shaft (8) on a system housing; both ends of the filter element (1) are provided with inner sealing rings (3); and an annular groove (4) is provided on the bottom shaft (9) at the bottom of the filter cup (2).

2. A structure for reducing the filter element disassembly space according to claim 1, characterized in that: The cross-sectional dimension of the annular groove (4) is smaller than the cross-sectional dimension of the inner sealing ring (3).

3. The structure for reducing the filter element disassembly space according to claim 1, characterized in that: The filter element (1) is located between the bottom shaft (9) and the top shaft (8), and the two ends of the filter element (1) are engaged in a plug-in manner, and the two ends of the filter element (1) are respectively in contact with the bosses of the bottom shaft (9) and the top shaft (8).

4. The structure for reducing the filter element disassembly space according to claim 1, characterized in that: The upper end of the filter cup (2) is connected to the system housing (5) by plugging, and an outer sealing ring (7) is provided between the filter cup (2) and the system housing (5).

5. The structure for reducing the filter element disassembly space according to claim 1, characterized in that: A fixing hole (6) is provided on the outer boss of the filter cup (2), and the fixing hole (6) is fixed to the system housing (5) by means of bolts.

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