Lubricating oil system oil drainage device easy and convenient to operate

Abstract

The utility model discloses an oil drainage device of a lubricating oil system, which is simple and convenient to operate. Comprising a valve body (4), the center of the valve body (4) is in sliding connection with a T-shaped valve element (1), a sealing ring A (2) is arranged at the sliding connection position, and a sealing ring belt is arranged on the lower surface of a top boss of the T-shaped valve element (1) and can be in sealing fit with the top end face of the valve body (4). A sliding rod body of the T-shaped valve element (1) is of a hollow structure and forms a hollow flow channel, and through flow channel holes (10) are distributed in the side wall of the upper end of the hollow flow channel in the circumferential direction. A check ring A (8) is arranged on the outer wall, close to the lower end, of a sliding rod body of the T-shaped valve element (1). The outer circle face, close to the bottom end, of the valve body (4) is in threaded connection with a knob (5), and the center of the knob (5) is in sliding connection with a sliding rod body of the T-shaped valve element (1). The oil drainage device is easy to operate, and the oil drainage flow is convenient and fast to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation engine lubricating oil systems, in particular to an oil draining device for a lubricating oil system which is easy to operate. Background Art

[0002] The lubricating oil in aircraft engine lubricating systems requires regular testing for metal shavings to assess the engine's health. Currently, sampling the lubricating oil requires specialized tools and a cumbersome process of draining the oil. Furthermore, the flow rate during draining is difficult to control, potentially causing oil splashing and wasting, while also harming both worker health and the cleanliness of the work environment. Utility Model Content

[0003] The purpose of the utility model is to provide an oil draining device for a lubricating oil system that is easy to operate. The oil draining device of the utility model is easy to operate and convenient to adjust the oil draining flow rate.

[0004] The technical solution of the utility model is: an easy-to-operate oil drain device for a lubricating oil system, comprising a valve body, the center of the valve body being slidably connected to a T-shaped valve core, and a sealing ring A being arranged at the sliding connection, a sealing ring being provided on the lower surface of the boss on the top of the T-shaped valve core and capable of sealingly cooperating with the top surface of the valve body; a sliding rod body of the T-shaped valve core presents a hollow structure to form a hollow flow channel, and a through-flow channel hole is circumferentially distributed on the side wall at the upper end of the hollow flow channel; a retaining ring A is provided on the outer wall of the sliding rod body of the T-shaped valve core near the lower end; the outer cylindrical surface of the valve body near the bottom end is threadedly connected to the knob, and the center of the knob is slidably connected to the sliding rod body of the T-shaped valve core.

[0005] In the aforementioned easy-to-operate lubricating oil system drain device, a spring chamber is also provided in the center of the valve body, and a spring and a spring seat are provided in the spring chamber from top to bottom, and the spring seat can slide along the spring chamber; the T-shaped valve core sliding rod passes through the spring and the spring seat in sequence, and the retaining ring A abuts against the lower end surface of the spring seat.

[0006] In the aforementioned easy-to-operate lubricating oil system drain device, a retaining ring B is provided on the sliding rod of the T-shaped valve core located below the retaining ring A, which is used to limit the displacement of the knob along the axis of the T-shaped valve core.

[0007] In the aforementioned easy-to-operate lubricating oil system drain device, the valve body and the knob are connected by a left-hand thread; and a right-hand thread is provided on the outer circumferential surface of the valve body near the upper end.

[0008] In the aforementioned easy-to-operate lubricating oil system drain device, blind holes are circumferentially distributed on the bottom plane of the valve body, and a mounting through hole is provided on the knob. The mounting through hole and the mounting blind hole are arranged in pairs along the axis of the T-shaped valve core.

[0009] In the aforementioned easy-to-operate lubricating oil system drain device, a sealing ring B is mounted on the valve body below the right-hand thread.

[0010] The advantages of the utility model are:

[0011] (1) The oil draining device is easy to operate and can be completed without tools such as wrenches.

[0012] (2) The oil discharge device is convenient for adjusting the oil discharge flow rate.

[0013] (3) The valve core in the oil drain device can be connected to a hose to drain the released lubricating oil to another place to prevent the lubricating oil from overflowing onto the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the oil discharge device of the utility model;

[0015] Figure 2 This is a schematic diagram of the oil discharge device of the utility model being closed;

[0016] Figure 3 This is a schematic diagram of the oil discharge device of the utility model being opened;

[0017] Figure 4 This is a schematic diagram of the installation of the oil drain device of the utility model on the lubricating oil system housing. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0019] Example 1. A lubricating oil system draining device that is easy to operate, see Figures 1-4 , including: T-type valve core 1, sealing ring A2, sealing ring B3, valve body 4, knob 5, spring 6, spring seat 7, retaining ring A8, retaining ring B9, among which:

[0020] An annular sealing groove with a rectangular cross-section is provided on the lower side of the top boss of the T-type valve core 1, and the interior is filled with vulcanized rubber to form a raised sealing ring belt that seals with the valve body 4 to control the opening and closing of the oil discharge device; the sliding rod body of the T-type valve core 1 is a hollow structure to form a hollow flow channel, and the side wall of the upper end of the hollow flow channel is circumferentially distributed with through-flow channel holes 10; a sealing ring A2 is provided between the T-type valve core 1 and the valve body 4 to achieve sliding sealing; the T-type valve core 1 is provided with two retaining ring grooves on the outer cylindrical surface, and two retaining rings are placed therein, namely retaining ring A8 and retaining ring B9, one retaining ring contacts the bottom surface of the spring seat 7 to limit the position, and the other retaining ring contacts the bottom surface of the knob 5 to limit the position.

[0021] The valve body 4 is a cylindrical structure with a right-handed thread on the upper end of the outer cylindrical surface, which is threadedly connected to the lubricating oil system housing; the lower end of the right-handed thread of the valve body 4 is provided with a sealing groove, which is fixedly sealed with the lubricating oil system housing through the sealing ring B3; the lower end of the outer cylindrical surface of the valve body 4 is provided with a left-handed thread, the thread surface is copper-plated, and is threadedly connected to the knob 5; the inner hole of the valve body 4 is stepped, and a sealing groove is provided at the upper end, in which a sealing ring A2 is provided for sliding sealing with the axis of the T-type valve core 1, and the lower end is a spring chamber 11, which is clearance-matched with the outer cylindrical surface of the spring seat 7; a spring 6 is provided between the spring chamber 11 of the valve body 4 and the spring seat 7; three circular mounting blind holes 12 are evenly distributed along the circumference on the bottom plane of the valve body 4, which are convenient for installation and disassembly.

[0022] The knob 5 is cylindrical, with a knurled outer surface for easy manual oil draining. The inner cylindrical surface of the knob 5 is threaded with a left-hand thread, creating a threaded connection with the valve body 4. A platform is located within the knob 5, with a circular hole at its center, flexibly engaging the axis of the T-shaped valve core 1. Three mounting holes 13 are evenly distributed along the upper axis of the platform, paired with blind mounting holes 12, facilitating installation and removal. The bottom surface of the knob 5 platform engages with the retaining ring 8 for position control. The outer cylindrical surface at the bottom of the knob 5 has three evenly distributed transverse locking screw holes, allowing the oil drain device to be securely connected to the oil system housing via locking screws.

[0023] The spring 6 is a compression coil spring, one end of which is pressed tightly against the end surface of the inner hole of the valve body 4, and the other end is pressed tightly against the end surface of the spring seat 7.

[0024] The spring seat 7 is a cylindrical structure, the outer cylindrical surface is in clearance with the inner hole of the valve body 4, and the inner cylindrical surface is in clearance with the axis of the T-shaped valve core 1.

[0025] The retaining ring 8 is an annular structure with a circular cross section and an open structure; the retaining ring 8 is placed in the retaining ring groove of the T-shaped valve core 1.

[0026] Figure 2 The diagram of the oil drain device in the closed state shows that the raised annular vulcanized rubber on the underside of the top boss of the T-shaped valve core 1 contacts and seals the top end face of the valve body 4, preventing the lubricating oil in the lubricating oil system from flowing out of the oil drain device.

[0027] Figure 3 The diagram shows the oil drain mechanism in the open state. The raised annular vulcanized rubber on the underside of the top boss of the T-shaped valve core 1 is separated from the top end face of the valve body 4, allowing the lubricating oil in the oil system to flow out through the transverse flow channel holes and internal hollow flow channel of the T-shaped valve core 1.

[0028] Method of using the utility model:

[0029] The oil drain device is screwed into the bottom of the oil system housing through the threads of the valve body 4 and tightened with a special tightening wrench. The special wrench head has three cylinders evenly spaced along the axis, and the three cylinders are inserted into the three mounting holes evenly spaced along the axis of the valve body 4 and the knob 5.

[0030] When checking the quality of the lubricating oil or draining sediment, the knurled structure on the outer cylindrical surface of knob 5 is continuously turned leftward, causing knob 5 to gradually move upward. The inner hole of knob 5 moves to retaining ring A8, overcoming the elastic force of spring 6 and pushing retaining ring 8 and T-type valve core 1 to continue moving upward. The raised annular vulcanized rubber on the underside of the top boss of T-type valve core 1 disengages from the top end face of valve body 4, and the lubricating oil in the lubricating oil system flows out through the lateral flow channel holes and internal hollow flow channel of T-type valve core 1. By adjusting the screw-in depth of knob 5 relative to valve body 4, the opening height of the vulcanized sealing surface of T-type valve core 1 is controlled, thereby controlling the amount of oil drained. The screw-in depth of knob 5 is limited by the inner hole platform of knob 5 and the end face of the bottom of valve body 4.

[0031] When the oil is drained, the knurled structure on the outer cylindrical surface of the knob 5 is turned right to gradually move the knob 5 downward, so that the raised annular vulcanized rubber on the lower side of the top boss of the T-type valve core 1 contacts and seals with the top end face of the valve body 4. The knob 5 moves downward until the inner hole platform and the retaining ring B9 contact the limit position, and the oil drain device is closed.

Claims

1. An easy-to-operate oil drain device for a lubricating oil system, characterized in that: The invention comprises a valve body (4), the center of the valve body (4) is slidably connected to a T-shaped valve core (1), and a sealing ring A (2) is provided at the sliding connection. The lower surface of the top boss of the T-shaped valve core (1) is provided with a sealing ring belt which can be sealed with the top surface of the valve body (4); the sliding rod of the T-shaped valve core (1) is hollow in structure to form a hollow flow channel, and the side wall of the upper end of the hollow flow channel is circumferentially distributed with through-flow channel holes (10); a retaining ring A (8) is provided on the outer wall of the sliding rod of the T-shaped valve core (1) near the lower end; the outer cylindrical surface of the valve body (4) near the bottom end is threadedly connected to the knob (5), and the center of the knob (5) is slidably connected to the sliding rod of the T-shaped valve core (1).

2. The easy-to-operate lubricating oil system draining device according to claim 1, characterized in that: The valve body (4) is further provided with a spring chamber (11) at its center. A spring (6) and a spring seat (7) are sequentially provided in the spring chamber (11) from top to bottom. The spring seat (7) can slide along the spring chamber (11). The sliding rod of the T-shaped valve core (1) passes through the spring (6) and the spring seat (7) in sequence. The retaining ring A (8) abuts against the lower end surface of the spring seat (7).

3. The easy-to-operate lubricating oil system draining device according to claim 1, characterized in that: A retaining ring B (9) is provided on the sliding rod of the T-shaped valve core (1) below the retaining ring A (8) for limiting the displacement of the knob (5) along the axis of the T-shaped valve core (1).

4. The easy-to-operate lubricating oil system draining device according to claim 1, characterized in that: The valve body (4) and the knob (5) are connected by a left-hand thread; the outer circumferential surface of the valve body (4) near the upper end is provided with a right-hand thread.

5. The easy-to-operate lubricating oil system draining device according to claim 1, characterized in that: The bottom plane of the valve body (4) is provided with mounting blind holes (12) distributed along the circumferential direction, and the knob (5) is provided with mounting through holes (13). The mounting through holes (13) and the mounting blind holes (12) are arranged in pairs along the axis of the T-shaped valve core (1).

6. The easy-to-operate lubricating oil system draining device according to claim 4, characterized in that: The valve body (4) is provided with a sealing ring B (3) on the valve body below the right-hand thread.

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