A device for checking the cleanliness of an oil filter

Abstract

The present invention relates to an oil filter cleanliness inspection device, which belongs to an aviation machinery system. An oil filter cleanliness inspection device includes an isolation tube, a limiter, a timing signaler, a full oil signaler and a display; the isolation tube completely isolates the oil filter from the oil barrel, and its height is less than the height difference between the oil barrel and the oil filter, and an outwardly protruding base is provided on its tube wall, and elastic parts are provided on the upper and lower surfaces of the base, and the axial direction of the elastic part is consistent with the axial direction of the isolation tube; in the initial state, the limiter limits the isolation tube from rising, the lower elastic part is in a compressed state, and the upper elastic part is in a free state; the timing signaler is provided outside the isolation tube and close to the bottom of the oil barrel; the full oil signaler is installed on the inner wall of the oil barrel and is located at the top of the oil filter; the display is used to receive signals from the timing signaler and the full oil signaler to display the filling time. The present invention has the following advantages: 1. Quantitative detection can be performed; 2. It is convenient to use and easy to operate.

Description

Technical Field

[0001] The invention relates to an oil filter cleanliness inspection device, belonging to an aviation mechanical system. Background Art

[0002] The fuel and lubricating oil systems are two major systems in aircraft engines. The oil's cleanliness during operation must meet national military standards. However, the shedding of rubber particles from the aircraft's fuel tanks and metal shavings from the oil pumps can reduce oil cleanliness. The current solution to this problem is to pass the oil through the oil filter screen, retaining the rubber particles and metal shavings on the screen and thus improving oil cleanliness. However, this leads to an increase in impurities on the filter screen, decreasing its permeability, resulting in longer filtration times and poorer filtration results. Therefore, the filter screen needs to be cleaned and its permeability checked. However, there is currently no convenient and easy-to-use test device for measuring filter permeability. Summary of the Invention

[0003] The purpose of the present invention is to provide a convenient and easy-to-operate oil filter cleanliness inspection device for inspecting the cleanliness of the oil filter after cleaning.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a device for checking the cleanliness of an oil filter, comprising an isolation tube, a limit part, a timing signal, a full oil signal and a display; the isolation tube is a cylindrical part with an open end, which is buckled on the oil filter in the oil barrel to completely isolate the oil filter from the oil barrel, and its height is less than the height difference between the oil barrel and the oil filter, and an outwardly protruding base is provided on its tube wall, and elastic parts are provided on the upper and lower surfaces of the base, and the axial direction of the elastic part is consistent with the axial direction of the isolation tube; in the initial state, the limit part limits the isolation tube from rising, the lower elastic part is in a compressed state, and the upper elastic part is in a free state; the timing signal is arranged outside the isolation tube and close to the bottom of the oil barrel; the full oil signal is installed on the inner wall of the oil barrel and located at the top of the oil filter; the display is used to receive signals from the timing signal and the full oil signal to display the filling time.

[0005] Preferably, there are two bases, which are symmetrically arranged on the wall of the isolation cylinder.

[0006] Preferably, the limiting part is a pressing plate, and a mounting hole I for inserting the pressing plate is opened on the barrel wall of the oil barrel. When the pressing plate is inserted, the base of the isolation cylinder is located below the pressing plate, so that the lower elastic part is in a compressed state and the upper elastic part is in a free state; when the pressing plate is pulled out of the base, the isolation cylinder rises.

[0007] Furthermore, it also includes an isolation support arranged at the bottom of the oil barrel, the isolation support is arranged around the circumference of the isolation cylinder and is located outside the isolation cylinder; the timing signal is installed on the isolation support.

[0008] Preferably, a mounting hole II is opened on the isolation support, which is opposite to the mounting hole I. The pressing piece passes through the mounting hole I and the mounting hole II in sequence, and rests on the upper surface of the isolation tube base to limit the isolation tube in the initial state.

[0009] Preferably, a fixing frame is further provided on the outside of the oil drum, and the fixing frame is used to fix the display.

[0010] Preferably, an isolation sealing rubber ring is provided between the bottom of the isolation cylinder and the bottom of the oil drum.

[0011] Preferably, the oil filter is installed on the bottom of the oil barrel through an oil filter fixing plate; an oil filter sealing rubber ring is provided between the bottom of the oil filter and the bottom of the oil barrel tube.

[0012] Preferably, the timing signal and the full oil signal are both connected to the display via cables.

[0013] Preferably, the transmitting end and the receiving end of the timing signaler and the full oil signaler are symmetrical relative to the isolation tube.

[0014] Working Principle: This solves the problem of measuring filter permeability by measuring the time it takes for oil to fill the filter after passing through the filter. Specifically, after the pressure plate is removed, the isolation cylinder rises, and the timer signal transmits a signal to the display, starting the timer. When the display receives the full oil signal from the full oil signal, the timer receives the signal and displays the filling time.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. By measuring the oil filter filling time, the cleanliness of the oil filter after cleaning can be quantitatively tested, avoiding qualitative inspection by naked eye observation;

[0017] 2. Easy to use and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a principle diagram of an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 AA view;

[0020] Figure 3 yes Figure 1 BB view;

[0021] Figure 4 This is a schematic front view of an embodiment of the present invention;

[0022] Figure 5 yes Figure 4 AA view;

[0023] Figure 6This is a schematic diagram of the oil drum and its internal components in an embodiment of the present invention;

[0024] Figure 7 yes Figure 6 AA view;

[0025] Figure 1-7 Among them, 1-oil barrel; 2-oil filter sealing rubber ring; 3-oil filter; 4-isolation cylinder; 5-full oil signal transmitter; 6-full oil signal receiver; 7-timing signal transmitter; 8-timing signal receiver; 9-oil filter fixing plate; 10-cover plate; 11-spring; 12-timing signal transmitter cable; 13-full oil signal transmitter cable; 14-timing signal receiver cable; 15-full oil signal receiver cable; 16-transmitter and receiver signal connecting cable; 17-display; 18-fixing frame; 19-isolation support; 20-pressing piece; 21-isolation sealing rubber ring. DETAILED DESCRIPTION

[0026] It should be noted that, in this embodiment, the directional words "upper" and "lower" are described according to the drawings and do not constitute a limitation to the present invention.

[0027] The following is combined with Figure 1-7 The present invention is further described in detail: a device for checking the cleanliness of an oil filter, comprising an isolation tube 4, a limit part, a timing signal, a full oil signal and a display 17; the isolation tube 4 is a cylindrical part with an open end, which is buckled on the oil filter 3 in the oil barrel 1 to completely isolate the oil filter 3 from the oil barrel 1, and its height is less than the height difference between the oil barrel 1 and the oil filter 3, and an outwardly protruding base is provided on its tube wall, and springs 11 are provided on the upper and lower surfaces of the base, and the axial direction of the spring 11 is consistent with the axial direction of the isolation tube 4; in the initial state, the limit part limits the isolation tube 4 from rising, the lower spring 11 is in a compressed state, and the upper spring 11 is in a free state; the timing signal is arranged outside the isolation tube 4, and close to the bottom of the oil barrel 1, and its transmitting end and receiving end are symmetrical relative to the isolation tube; the full oil signal is installed on the inner wall of the oil barrel 1, and is located at the top of the oil filter 3, and its transmitting end and receiving end are symmetrical relative to the isolation tube 4; the display 17 is used to receive signals emitted by the timing signal and the full oil signal to display the filling time.

[0028] The specific structure is as follows:

[0029] In this embodiment, the limiting part is a pressing piece 20, and a mounting hole Ⅰ for inserting the pressing piece 20 is opened on the barrel wall of the oil barrel 1. When the pressing piece 20 is inserted, the base of the isolation cylinder 4 is located below the pressing piece 20, so that the lower spring 11 is in a compressed state and the upper spring 11 is in a free state; when the pressing piece 20 is pulled away from the base, the isolation cylinder rises.

[0030] In order to install the timing signal and better fix the pressing piece 20, an isolation support 19 is set at the bottom of the oil barrel 1. The isolation support 19 is set around the circumference of the isolation cylinder 4 and is located outside the isolation cylinder 4. The timing signal is installed on the isolation support 19; at the same time, a mounting hole II is opened on the isolation support 19, and the mounting hole II is opposite to the mounting hole I. The pressing piece 20 passes through the mounting hole I and the mounting hole II in turn, and rests on the upper surface of the isolation cylinder base, limiting the isolation cylinder 4 to the initial state; since the pressing piece 20 is inserted into the mounting hole II and the mounting hole I at the same time, the stability of the pressing piece 20 is higher and the shaking of the pressing piece 20 is reduced.

[0031] In this embodiment, there are two isolation tube bases, which are symmetrically arranged on the wall of the isolation tube 4.

[0032] In order to fix the display 17, a fixing frame 18 is provided on the outside of the oil drum, and the fixing frame 18 is provided around the outer circumference of the oil drum.

[0033] The timing signaler includes a timing signal transmitter 7 and a timing signal receiver 8, which are installed on an isolation support 19. The two are located on the same horizontal plane and are opposite to each other. The timing signal transmitter 7 is connected to the timing signal receiver 8 through a timing signal transmitter cable 12, and the timing signal receiver 8 is connected to the display 17 through a timing signal receiver cable 14. The full oil signaler includes a full oil signal transmitter 5 and a full oil signal receiver 6. The two are located on the same horizontal plane and are opposite to each other. The full oil signal transmitter 5 is connected to the full oil signal receiver 6 through a full oil signal transmitter cable 13, and the full oil signal receiver 6 is connected to the display 17 through a full oil signal receiver cable 15. In order to connect the transmitting signal cable and the receiving signal cable, thereby connecting them into a unified positive and negative poles for powering the signalers (timing signaler and full oil signaler), a transmitting and receiving signal connecting cable 16 is connected between the timing signal transmitter cable 12 and the timing signal receiver cable 14, and between the full oil signal transmitter cable 13 and the full oil signal receiver cable 15.

[0034] Place the bottom support of the oil filter 3 on the lower part of the oil filter fixing plate 9 and install it, and squeeze the oil filter sealing rubber ring 2; place the bottom support of the isolation cylinder 4 on the lower part of the pressing plate 20 and install it, and squeeze the isolation sealing rubber ring 21; insert the pressing plate 20 into the mounting holes of the oil barrel 1 and the isolation support 19, and when the base of the isolation cylinder 4 is installed on the lower part of the pressing plate 20, the lower spring 11 is in a compressed state and the upper spring 11 is in a free state. When the pressing plate 20 is manually pulled out, the isolation cylinder 4 moves upward under the elastic force of the lower spring 11. When the bottom of the isolation cylinder 4 is higher than the top of the oil filter 3 and the upper spring 11 touches the cover plate 10 on the top of the oil barrel, the isolation cylinder 4 is in a final static state under the elastic force of the upper and lower springs. At this time, the bottom of the isolation cylinder 4 is higher than the top of the oil filter 3.

[0035] Working process: plug in the power supply, the timing signal transmitter 7 and the full oil signal transmitter 5 start working, continuously emitting lasers, manually pull out the pressing piece 20 from both sides, and the isolation cylinder 4 moves upward under the elastic force and buoyancy of the bottom spring 11. When the bottom of the isolation cylinder 4 is higher than the horizontal plane where the timing signal transmitter 7 and the timing signal receiver 8 are located, the laser is no longer blocked by the isolation cylinder 4, passes through the oil filter 3 and reaches the timing signal receiver 8. After receiving the laser signal, the timing signal receiver 8 transmits an electrical signal to the display 17, and the display starts timing; when the laser signal is received at the center of the full oil signal (when the isolation cylinder is at the full oil position), the laser is automatically turned off. When there is oil between the oil signal transmitter 5 and the full oil signal transmitter 6, the full oil signal transmitter 6 cannot receive the laser signal; when the oil filter 3 is not filled, there is oil and air between the full oil signal transmitter 5 and the full oil signal transmitter 6, which will cause light refraction, causing the laser signal received by the full oil signal transmitter 6 to deviate; only when the oil filter 3 is filled, there is only oil between the full oil signal transmitter 5 and the full oil signal transmitter 6, and light propagates in a straight line, can the full oil signal transmitter 6 receive the laser signal in the center), transmit the electrical signal to the display 17, the display stops timing, and displays the filling time.

[0036] The above embodiments are merely preferred embodiments of the present invention and do not constitute a limitation of the present invention. Any extension, modification, equivalent substitution, etc. made by a person skilled in the art without departing from the essence of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A device for checking the cleanliness of an oil filter, characterized by: It includes an isolation tube, a limit part, a timing signal, a full oil signal and a display; the isolation tube is a cylindrical part with an open end, which is buckled on the oil filter in the oil barrel to completely isolate the oil filter from the oil barrel, and its height is less than the height difference between the oil barrel and the oil filter. An outwardly protruding base is provided on its tube wall, and elastic parts are provided on the upper and lower surfaces of the base, and the axial direction of the elastic part is consistent with the axial direction of the isolation tube; in the initial state, the limit part limits the isolation tube from rising, the lower elastic part is in a compressed state, and the upper elastic part is in a free state; the timing signal is arranged outside the isolation tube and close to the bottom of the oil barrel; the full oil signal is installed on the inner wall of the oil barrel and located on the top of the oil filter; the display is used to receive signals from the timing signal and the full oil signal to display the filling time; The limiting part is a pressing piece. A mounting hole I for inserting the pressing piece is provided on the wall of the oil drum. When the pressing piece is inserted, the base of the isolation cylinder is located below the pressing piece, so that the lower elastic part is in a compressed state and the upper elastic part is in a free state. When the pressing piece is pulled away from the base, the isolation cylinder rises. It also includes an isolation support arranged at the bottom of the oil drum, which is arranged around the circumference of the isolation cylinder and is located outside the isolation cylinder; a timing signaler is installed on the isolation support; a mounting hole II is opened on the isolation support, which is opposite to the mounting hole I, and the pressing piece passes through the mounting hole I and the mounting hole II in turn, and rests on the upper surface of the isolation cylinder base, limiting the isolation cylinder to an initial state.

2. The oil filter cleanliness inspection device according to claim 1, characterized in that: There are two bases, which are symmetrically arranged on the wall of the isolation cylinder.

3. The oil filter cleanliness inspection device according to claim 1, characterized in that: A fixing frame is also provided on the outside of the oil barrel, and the fixing frame is used to fix the display.

4. The oil filter cleanliness inspection device according to claim 1, characterized in that: An isolation sealing rubber ring is provided between the bottom of the isolation cylinder and the bottom of the oil barrel.

5. The oil filter cleanliness inspection device according to claim 1, characterized in that: The oil filter is installed on the bottom of the oil drum through the oil filter fixing piece; an oil filter sealing rubber ring is arranged between the bottom of the oil filter and the bottom of the oil drum tube.

6. The oil filter cleanliness inspection device according to claim 1, characterized in that: The timing signal and full oil signal are connected to the display through cables.

7. The oil filter cleanliness inspection device according to claim 1, characterized in that: The transmitting end and the receiving end of the timing signal device and the full oil signal device are symmetrical relative to the isolation tube.

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