General tool for oil filter cartridge multiple-pass particle counting test

Abstract

The utility model relates to a kind of general tool of oil filter element multiple pass particle counting test, including sealing cover plate, filter cartridge, compression gland and multiple size different sealing gasket ring, multiple groups length different compression screw, filter cartridge is opened and oil inlet and oil outlet, at least one layer of fixed block assembly consisting of multiple fixed blocks is connected on filter cartridge inner wall, and through hole and blind hole are opened in compression gland;When working, sealing gasket ring is placed in filter cartridge inner bottom end, oil filter element is placed on sealing gasket ring, compression gland is compressed on the upper end surface of filter element, sealing cover plate is connected with the upper end of filter cartridge, if oil filter element is higher than fixed block, compression screw is compressed and is screwed with fixed block through the through hole of compression gland, if oil filter element is lower than fixed block, compression screw is screwed with fixed block and is inserted into the blind hole of compression gland to compress compression gland.The utility model is practical, and it is strong in universality, focuses on solving the problem that test cannot be carried out in test-bed internal station due to oversized or superhigh oil filter element.

Description

Technical Field

[0001] This utility model relates to a test fixture, and more particularly to a universal fixture for multiple-pass particle counting tests of oil filter elements. Background Technology

[0002] The multiple particle counting test is an important test method for evaluating the filtration performance of oil filter elements. It is mainly used to simulate the key performance indicators such as the filter element's ability to retain particles of different sizes, the change in filtration ratio, and the service life of the filter element when filtering oil containing specific particulate contaminants multiple times under actual working conditions.

[0003] Due to the diverse sizes, heights, and structural shapes of oil filter elements, performance testing using a multi-pass particle counting test bench requires the manufacture of specialized testing fixtures tailored to the size and structural characteristics of each filter element, resulting in poor versatility. Existing specialized testing fixtures are composed of parts, components, and connectors of various sizes, exhibiting complex structures, high manufacturing costs, long production cycles, and large footprints. Furthermore, installation is inconvenient, replacement is time-consuming, and work efficiency is low. Additionally, the space constraints of the multi-pass particle counting test bench's mounting station mean that oil filter elements with large outer diameters or heights cannot be installed on the test bench for testing due to the fixture's excessive height or size. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a universal tooling for multiple particle counting tests of oil filter elements. This tooling can accommodate oil filter elements of various sizes, heights and structures by adjusting the sealing gaskets of different sizes, and ensure that their end faces meet the sealing requirements. The inlet and outlet of the universal tooling are connected to the test bench through a high-pressure soft oil pipe. It is placed outside the test bench and is not limited by the space of the test bench installation position. It achieves the purpose of strong versatility, low manufacturing cost, small footprint, convenient and quick testing and use, and improved work efficiency.

[0005] The technical solution to the above-mentioned technical problem is: a universal tooling for multiple particle counting tests of oil filter elements, including a sealing cover plate, a filter cartridge, a clamping cover, multiple sealing gaskets of different sizes, and multiple sets of clamping screws of different lengths. The bottom end face of the filter cartridge has an oil inlet, and the side face of the filter cartridge has an oil outlet. At least one layer of fixing block assemblies is connected to the inner wall of the filter cartridge. Each fixing block assembly consists of N fixing blocks, where N is 3-10. The fixing blocks have threaded holes. The clamping cover consists of a circular pressure plate and N connecting screws evenly distributed around the circumference of the circular pressure plate. The filter consists of a first ear plate and N second connecting ear plates. The first connecting ear plate has a through hole, and the second connecting ear plate has a blind hole. During operation, the sealing gasket is placed at the bottom of the filter cartridge, the oil filter element is placed on the sealing gasket, and the pressure cap is pressed against the upper surface of the filter element. The sealing cap is connected to the upper end of the filter cartridge through a connector. If the upper surface of the oil filter element is higher than the fixing block, the pressure screw presses against the pressure cap and passes through the through hole of the pressure cap to be threadedly connected to the fixing block. If the upper surface of the oil filter element is lower than the fixing block, the pressure screw is threadedly connected to the fixing block and extends into the blind hole of the pressure cap to press against the pressure cap.

[0006] Furthermore, the sealing ring is composed of a bottom ring and an upper ring, and the inner diameter of the bottom ring is greater than or equal to the inner diameter of the oil inlet at the bottom of the filter cartridge.

[0007] Furthermore, sealing rings are respectively provided on the lower end face of the bottom annulus and the upper end face of the upper annulus.

[0008] Furthermore, it also includes a sealing gasket. During operation, the sealing gasket is located between the sealing cover plate and the filter cartridge. The sealing cover plate and the sealing gasket are connected to the filter cartridge by connecting screws.

[0009] By adopting the above technical solution, this utility model has the following beneficial effects: 1. This invention solves the problem of oil filter elements being too large or too tall to be tested inside the test bench. The filter cartridge of this invention features a reliable top seal, and has an oil inlet and outlet at the bottom and side, respectively, with welded inlet and outlet connectors. It allows connection to the test bench using a high-pressure flexible oil pipe, enabling performance testing by placing the test fixture outside the test bench, thus resolving the problem of oil filter elements being too large or too tall to be tested inside the test bench.

[0010] 2. High practicality and versatility. This utility model is applicable to oil filter elements of various sizes, heights, and structures. Oil filter elements of various sizes can be installed, sealed, and fixed in tooling for performance testing. Based on the external dimensions (inner and outer diameters and height, or length, width, and height) of the oil filter element being tested, a suitable sealing gasket is selected or manufactured. By adjusting the sealing gasket, various sizes and heights of oil filter elements, such as cylindrical, elliptical, and square types, are installed. The clamping screws on the fixing block are adjusted to tighten or pull the pressure cap, thus fixing the oil filter element. This ensures that the bottom of the oil filter element and the sealing gasket, as well as the sealing gasket and the bottom of the filter cartridge, are sealed without leakage through the sealing ring on the sealing gasket.

[0011] 3. This utility model tooling has a simplified structure, is easy to process, and has a long service life. It reduces manufacturing costs by eliminating the need for manufacturing various individual and special tooling, and reduces the storage space required. During trial use, it proved to be easy, convenient, and quick to operate, and its work efficiency was greatly improved.

[0012] The technical features of the universal tooling for repeatedly passing particle counting tests of the oil filter element of this utility model will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 This utility model oil filter element has passed multiple particle counting tests. General tooling working state diagram (the upper end face of the oil filter element is higher than the fixed block).

[0014] Figure 2 This utility model oil filter element has passed multiple particle counting tests. The general tooling working state diagram is shown (the upper end of the oil filter element is lower than the fixed block).

[0015] Figure 3 This utility model oil filter element has passed multiple particle counting tests. (Universal tooling perspective view)

[0016] Figure 4 : A three-dimensional view of the filter cartridge of this utility model (with a layer of fixing block assembly).

[0017] Figure 5 Top view of the filter cartridge of this utility model (with two layers of fixing block assemblies).

[0018] Figure 6 : Figure 5 AA sectional view.

[0019] Figure 7 : A three-dimensional view of the pressing cap of this utility model.

[0020] Figure 8 : A three-dimensional view of the large-size sealing gasket ring of this utility model.

[0021] Figure 9 : A three-dimensional view of the small-sized sealing gasket ring of this utility model.

[0022] In the diagram: 1-Sealing cover plate, 2-Connecting screw, 3-Sealing gasket, 4-Filter cartridge, 41-Oil inlet, 42-Oil outlet, 5-Clamping screw, 6-Clamping cover, 61-Circular pressure plate, 62-Connecting ear plate one, 621-Through hole, 63-Connecting ear plate two, 631-Blind hole, 7-Fixing block, 8-Sealing gasket ring, 81-Bottom circular ring, 82-Upper circular ring, 9-Sealing ring.

[0023] P-oil filter element. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Example 1: A universal tooling for multiple particle counting tests of oil filter elements, such as... Figures 1-4 , Figures 7-9 As shown, the system includes a sealing cover plate 1, a sealing gasket 3, a filter cartridge 4, a pressing cover 6, multiple sealing gaskets 8 of different sizes, and multiple sets of pressing screws 5 of different lengths. The filter cartridge 4 has a raised edge on its upper outer side. The bottom end of the filter cartridge 4 has an oil inlet 41, and the side of the filter cartridge has an oil outlet 42. A fixing block assembly is connected to the inner wall of the filter cartridge 4 above the oil outlet. This fixing block assembly consists of N fixing blocks 7 evenly distributed on the inner wall of the filter cartridge 4, where N is 4. The fixing blocks 7 have threaded holes. The pressing cover 6 consists of a circular pressure plate 61 and N fixing blocks evenly distributed around the circumference of the circular pressure plate. A connecting ear plate 1 (62) and N connecting ear plates 2 constitute a 63. The connecting ear plate 1 has a through hole 621, and the connecting ear plate 2 has a blind hole 631. During operation, the sealing gasket 8 is placed at the bottom of the filter cartridge 4, the oil filter element P is placed on the sealing gasket 8, the pressure cap 6 presses the upper end face of the filter element, and the sealing gasket 3 is located between the sealing cap 1 and the protruding edge of the filter cartridge 4. The sealing cap 1 and the sealing gasket 3 are connected and sealed to the filter cartridge 4 by connecting screws 2. If the upper end face of the oil filter element P is higher than the fixing block 7, the pressure screws 5 press the pressure cap 6 and pass through the through hole 621 of the pressure cap to connect with the fixing block 7 by thread (e.g., Figure 1 As shown), if the upper end face of the oil filter element P is lower than the fixing block 7, the clamping screw 5 is threadedly connected to the fixing block 7 and extends into the blind hole 631 of the clamping cover to tighten the clamping cover 6 (as shown). Figure 2 (As shown).

[0026] In this embodiment, the sealing ring 8 is composed of a bottom ring 81 and an upper ring 82. The hollow portion of the upper ring 82 allows space for the protruding part of the lower end face of the oil filter element and reduces weight. The inner diameter of the bottom ring is greater than or equal to the inner diameter of the oil inlet 41 at the bottom end of the filter cartridge. The lower end face of the bottom ring and the upper end face of the upper ring are respectively provided with mounting grooves, and a sealing ring 9 is provided in the mounting groove.

[0027] As a variation of this embodiment, to facilitate the installation of the small oil filter element, a layer of fixing block assembly is connected to the inner wall of the filter cartridge 4 above and below the oil outlet, for a total of two layers of fixing block assembly. Each layer of fixing block assembly consists of four fixing blocks 7 evenly distributed and connected to the inner wall of the filter cartridge 4, such as... Figures 4-5 As shown.

[0028] As a variation of this embodiment, the number of fixing blocks 7 and the number of corresponding clamping covers connecting ear plates 62 and 63 can be reduced or increased according to actual conditions, generally N is 3-10.

[0029] This invention utilizes a high-diameter filter cartridge, accommodating various oil filter elements smaller than the cartridge's inner diameter. The height of the oil filter element's top is adjusted by using a sealing gasket at the bottom. Depending on the filter element's height, the pressure cap can be installed either above or below the fixing block. Tightening screws are screwed into the fixing block, and the pressure cap is tightened to secure the oil filter element. This ensures a leak-proof seal between the bottom of the oil filter element and the sealing gasket, as well as between the sealing gasket and the bottom of the filter cartridge. Finally, the sealing gasket and sealing cover are installed and tightened with screws until a leak-proof seal is achieved. This invention is suitable for various oil filter elements that are not larger than the filter cartridge's inner diameter or higher than the filter cartridge's inner cavity height.

[0030] Installation and testing process: Based on the external dimensions of the oil filter element (outer diameter * inner diameter * height or length * width * height), select a sealing gasket 8 of appropriate height and size. Install the sealing gasket 8 and oil filter element P into the inner cavity of the filter cartridge 4, ensuring they are centered. Then place the clamping cap 6 on top of the oil filter element. When the top of the oil filter element is higher than the top of the fixing block 7, use M8 screws to pass through the four Φ9 through holes 621 on the clamping cap 6 and tighten until a seal is achieved (see [link]). Figure 1 When the top of the oil filter element P is lower than the bottom of the fixing block, use M8 screws to align the bottom of the screws with the four Φ9 blind holes 631 on the pressure cap 6 and tighten them until a seal is achieved (see [link]). Figure 2 The oil filter element is now installed.

[0031] For the test, install the sealing gasket 3 and sealing cover 1 on the top of the filter cartridge 4, and tighten them with M10 screws to ensure a reliable seal around the top edge of the filter cartridge. Finally, place the fixture outside the test bench, connect the test bench and the fixture's inlet and outlet using high-pressure flexible oil pipes, start the test bench, and check that the fixture does not leak oil. Then, the performance test of the oil filter element can begin. After the test, remove the sealing cover, sealing gasket, and pressure cap, and take out the oil filter element and sealing ring. Clean and dust-proof the fixture, ready for the next oil filter element to undergo performance testing.

[0032] From installing the oil filter element into the tooling to the end of the performance testing, the entire workflow is simple, convenient, and quick, demonstrating the tooling's practicality and versatility.

Claims

1. A universal tooling for repeatedly passing particle counting tests on oil filter elements, characterized in that: The filter cartridge includes a sealing cover (1), a filter cylinder (4), a pressing cover (6), multiple sealing gaskets (8) of different sizes, and multiple sets of pressing screws (5) of different lengths. The bottom end face of the filter cylinder has an oil inlet (41), and the side face of the filter cylinder has an oil outlet (42). At least one layer of fixing block assembly is connected to the inner wall of the filter cylinder. Each layer of fixing block assembly consists of N fixing blocks (7), where N is 3-10. The fixing blocks have threaded holes. The pressing cover consists of a circular pressure plate (61) and N connecting ear plates (62) and N connecting ear plates (63) evenly distributed around the circumference of the circular pressure plate. The connecting ear plates have through holes. (621), a blind hole (631) is opened on the connecting ear plate 2; during operation, the sealing gasket (8) is placed at the bottom of the filter cylinder (4), the oil filter element (P) is placed on the sealing gasket, the pressing cover (6) presses the upper end of the filter element, and the sealing cover plate (1) is connected to the upper end of the filter cylinder (4) through the connector. If the upper end of the oil filter element is higher than the fixed block, the pressing screw (5) presses the pressing cover (6) and passes through the through hole (621) of the pressing cover and is threaded to the fixed block (7). If the upper end of the oil filter element is lower than the fixed block, the pressing screw (5) is threaded to the fixed block (7) and extends into the blind hole (631) of the pressing cover to press the pressing cover (6).

2. The universal tooling for multiple particle counting tests of oil filter elements according to claim 1, characterized in that: The sealing ring (8) is composed of a bottom ring (81) and an upper ring (82), and the inner diameter of the bottom ring is greater than or equal to the inner diameter of the oil inlet (41) at the bottom of the filter cartridge.

3. The universal tooling for multiple particle counting tests of oil filter elements according to claim 2, characterized in that: A sealing ring (9) is provided on the lower end face of the bottom ring and the upper end face of the upper ring.

4. The universal tooling for repeatedly passing the particle counting test of the oil filter element according to any one of claims 1-3, characterized in that: It also includes a sealing gasket (3). During operation, the sealing gasket is located between the sealing cover plate (1) and the filter cartridge (4). The sealing cover plate (1) and the sealing gasket (3) are connected to the filter cartridge (4) by connecting screws (2).

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