Dry-type on-line leak detection device of oil filter

Abstract

According to the technical scheme, the dry type on-line leak detection device of the oil filter comprises a supporting frame, a sealing cover is fixed to the center of the top in the supporting frame, the top of the sealing cover is communicated with an air inlet pipe penetrating through the supporting frame, a sealing gasket is arranged on the inner wall of the sealing cover, and the air inlet pipe is communicated with the sealing gasket. The sealing cover and the sealing gasket are both arranged to be plane cones with the tops and the bottoms communicated, the diameters of the sealing cover and the sealing gasket are gradually increased from top to bottom, a pressure detector in electric signal connection with an external display screen is arranged on the upper portion of the inner wall of the sealing gasket, a liftable moving plate is arranged at the bottom in the supporting frame, and a filter is placed on the top of the moving plate. Air is filled into the filter through the air inlet pipe, the space between the filter and the sealing cover is filled with the air through the sealing connection between the sealing cover and the filter, whether the filter leaks or not is judged by observing the pressure of the pressure detector, the requirement for the detection environment is low, and the filter leakage detection device is suitable for various scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of oil filters, in particular to a dry-type online leak detection device for an oil filter. Background Art

[0002] With the rapid improvement of my country's economic level, the production of new vehicles and the number of vehicles in use in my country are also developing rapidly. The oil filter is an indispensable component of the lubrication system of a motor vehicle. According to the relevant technical standards of the state for oil filter products, the oil filter must ensure that it does not leak within a certain pressure range. Therefore, oil filter leak detection is a key standard for quality inspection of oil filter manufacturers.

[0003] Currently, oil filter leak detection is done using a water test method, which involves adding compressed air to the oil filter tank and immersing it in water to observe whether bubbles are generated to determine whether there is a leak. This method is not suitable for use on production lines and does not meet production needs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a dry-type online leak detection device for an oil filter.

[0005] In order to achieve the above purpose, the technical solution of the present invention is as follows:

[0006] A dry online leak detection device for an oil filter comprises a support frame, a sealing cover is fixed at the top center of the support frame, the top of the sealing cover is connected to an air intake pipe that passes through the support frame, a sealing gasket is provided on the inner wall of the sealing cover, the sealing cover and the sealing gasket are both configured as planar cones with the top and bottom opened, and the diameters of the sealing cover and the sealing gasket gradually increase from top to bottom, a pressure detector connected to an external display screen electrical signal is provided on the upper part of the inner wall of the sealing gasket, a movable plate that can be raised and lowered is provided at the bottom of the support frame, and a filter is placed on the top of the movable plate.

[0007] Preferably, the maximum inner diameter of the sealing cover is not greater than the width of the movable plate.

[0008] Preferably, the height of the sealing cover is not less than one third of the middle distance between the support frames.

[0009] Preferably, a plurality of protrusions are fixed on the top of the movable plate, and the protrusions are all arranged in a cylindrical shape.

[0010] Preferably, a plurality of bumps are fixed on the top of the movable plate, and the bumps are all configured to be cylindrical at the bottom and spherical at the top.

[0011] Preferably, the inlet and outlet holes of the filter are both arranged at one end of the filter.

[0012] Preferably, a driving motor is provided on one side of the top of the support frame, and the output end of the driving motor is connected to a vertical screw rod, which passes through the movable plate and is threadedly connected to the movable plate. A sliding rod is fixed on the other side of the top of the support frame, which vertically contacts the bottom of the support frame, and the sliding rod passes through the movable plate and is slidably connected to the movable plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model charges air into the filter through the air intake pipe, and at the same time, the air is filled between the filter and the sealing cover through the sealed connection between the two. The leakage of the filter is determined by observing the pressure of the pressure detector. The utility model has low requirements for the detection environment and is applicable to various scenarios, thereby expanding the scope of application and improving practical value.

[0015] 2. The utility model uses a flat cone-shaped sealing cover, which is beneficial for sealing the sealing cover and the filter. On the other hand, it is suitable for testing filters with different outer diameters, thereby further increasing the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components.

[0017] in:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the drive motor of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the sealing cover of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the filter of the present utility model.

[0022] Notes in the figure: 1. Support frame; 2. Intake pipe; 3. Filter;

[0023] 4. Sealing cover; 5. Driving motor; 6. Screw; 7. Moving plate; 8. Sliding rod;

[0024] 9. Bump; 10. Pressure detector; 11. Sealing gasket; 12. Inlet hole; 13. Exit hole. DETAILED DESCRIPTION

[0025] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0026] like Figure 1 As shown, as a dry online leak detection device for an oil filter of the present invention, it includes a support frame 1, which includes a top plate and a bottom plate. A sealing cover 4 is fixed at the center of the bottom of the top plate, and the top of the sealing cover 4 is connected to an intake pipe 2 that passes through the top plate. Figure 3 As shown, a sealing gasket 11 is provided on the inner wall of the sealing cover 4. Both the sealing cover 4 and the sealing gasket 11 are arranged as flat cones, and the top and bottom of the sealing cover 4 and the sealing gasket 11 are opened. The diameters of the sealing cover 4 and the sealing gasket 11 gradually increase from top to bottom. A pressure detector 10 is provided on the upper part of the inner wall of the sealing gasket 11. The pressure detector 10 is connected to the external display screen electrical signal. The flat cone-shaped sealing cover 4 is conducive to the sealing connection between the sealing cover 4 and the filter 3 on the one hand, and is suitable for detecting filters 3 with different outer diameters on the other hand, thereby increasing the scope of application of the device.

[0027] A driving motor 5 is provided on one side of the bottom of the top plate. Figure 2 As shown, the output end of the driving motor 5 is connected to a vertical screw rod 6, the bottom of the screw rod 6 is in contact with the bottom plate, the screw rod 6 passes through the movable plate 7 and is threadedly connected to the movable plate 7, and a sliding rod 8 is fixed on the other side of the bottom of the top plate, which vertically contacts the bottom plate. The sliding rod 8 passes through the movable plate 7 and is slidingly connected to the movable plate 7. The driving motor 5 drives the screw rod 6 to rotate, thereby driving the movable plate 7 to move along the direction of the screw rod 6. The movement of the movable plate 7 drives the filter 3 to move, thereby performing a sealing connection between the filter 3 and the sealing cover 4. At the same time, the sliding connection between the movable plate 7 and the sliding rod 8 increases the stability of the movable plate 7, thereby increasing the stability of the entire device.

[0028] Several protrusions 9 are fixed on the top of the moving plate 7. The protrusions 9 can be set to be cylindrical, such as Figure 2 As shown, it can also be set to a cylindrical bottom and a spherical top, with a filter 3 placed on the top of the protrusion 9, as shown in FIG. Figure 4As shown, the inlet hole 12 and the outlet hole 13 of the filter 3 are both arranged at one end of the filter 3, which is conducive to the sealing work. When the protrusion 9 is cylindrical, the bottom surface of the filter 3 is in surface contact with the protrusion 9. The contact area is reduced by the spacing between the protrusions 9, so that the bottom surface of the filter 3 can be leaked. When the protrusion 9 is cylindrical at the bottom and spherical at the top, the bottom surface of the filter 3 is in point contact with the protrusion 9, which further reduces the contact area and is conducive to improving the accuracy of the bottom surface detection work of the filter 3.

[0029] The maximum inner diameter of the sealing cover 4 is not greater than the width of the movable plate 7, which makes rational use of space and avoids unreasonable occupation of space. At the same time, it also makes the overall device more coordinated. The height of the sealing cover 4 is not less than one-third of the middle distance of the support frame 1. Through sufficient height and reasonable diameter, the sealing cover 4 can clamp the filter 3 at the center of the filter 3, thereby increasing the stability of the connection between the filter 3 and the sealing cover 4, and at the same time making the filter 3 more uniform when subjected to force, further improving the stability of the filter 3.

[0030] When in use, place the filter 3 on the top of the protrusion 9, and drive the movable plate 7 to rise by driving the motor 5, thereby driving the filter 3 to rise until it contacts the sealing gasket 11 in the sealing cover 4, thereby completing the sealed connection between the filter 3 and the sealing cover 4. Appropriate air is filled through the intake pipe 2, and the air is filled between the filter 3 and the sealing cover 4. Observe the value of the pressure detector 10 through the display screen. If the pressure value displayed by the pressure detector 10 becomes smaller, it means that the filter 3 is leaking. If the value remains unchanged, it means that there is no leakage.

[0031] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the scope of protection of the present invention.

Claims

1. A dry online leak detection device for an oil filter, characterized by: The invention comprises a support frame (1), a sealing cover (4) is fixed at the center of the top of the support frame (1), the top of the sealing cover (4) is connected to an air intake pipe (2) that penetrates the support frame (1), a sealing gasket (11) is provided on the inner wall of the sealing cover (4), the sealing cover (4) and the sealing gasket (11) are both configured as planar cones with the top and bottom opened, and the diameters of the sealing cover (4) and the sealing gasket (11) gradually increase from top to bottom, a pressure detector (10) connected to an external display screen electrical signal is provided on the upper part of the inner wall of the sealing gasket (11), a movable plate (7) that can be raised and lowered is provided at the bottom of the inner wall of the support frame (1), and a filter (3) is placed on the top of the movable plate (7).

2. The dry online leak detection device for an oil filter according to claim 1, characterized in that: The maximum inner diameter of the sealing cover (4) is no greater than the width of the movable plate (7).

3. The dry online leak detection device for an oil filter according to claim 2, characterized in that: The height of the sealing cover (4) is not less than one third of the middle distance of the support frame (1).

4. The dry-type online leak detection device for an oil filter according to claim 3, characterized in that: A plurality of protrusions (9) are fixed on the top of the movable plate (7), and the protrusions (9) are all arranged in a cylindrical shape.

5. The dry-type online leak detection device for an oil filter according to claim 3, characterized in that: A plurality of protrusions (9) are fixed on the top of the movable plate (7), and the protrusions (9) are all configured to be cylindrical at the bottom and spherical at the top.

6. The dry-type online leak detection device for an oil filter according to claim 1, characterized in that: The inlet hole (12) and the outlet hole (13) of the filter (3) are both arranged at one end of the filter (3).

7. The dry-type online leak detection device for an oil filter according to claim 1, characterized in that: A driving motor (5) is provided on one side of the top of the support frame (1); the output end of the driving motor (5) is connected to a vertical screw rod (6); the screw rod (6) passes through the movable plate (7) and is threadedly connected to the movable plate (7); a sliding rod (8) is fixed on the other side of the top of the support frame (1) and vertically contacts the bottom of the support frame (1); the sliding rod (8) passes through the movable plate (7) and is slidably connected to the movable plate (7).

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