Oil drainage screw with spiral structure

Abstract

The utility model discloses an oil drainage screw with a spiral structure in the technical field of oil drainage screws, which comprises an oil drainage screw, an internal thread groove is arranged on the upper surface of the oil drainage screw, an oil drainage hole is arranged below one side of the outer wall of the oil drainage screw, and a bottom plate is arranged at the bottom end in the oil drainage screw. The spiral sealing head is installed in the internal thread groove in the oil drainage screw in a threaded connection mode, the guide ring of the spiral sealing head is in butt joint with the bottom end of the guide column on the spiral sealing head in a rotating connection mode, and the sealing seat is installed in the center of the interior of the oil drainage screw. When the oil drainage screw needs to be subjected to oil drainage treatment, oil drainage treatment can be carried out only by unscrewing and taking out the spiral sealing head through a tool until the spring pushes the sealing seat to reset, and during oil drainage, the whole oil drainage screw does not need to be subjected to dismounting treatment, and oil drainage operation can be completed only by dismounting the spiral sealing head.

Description

Technical Field

[0001] This utility model relates to the field of drain screw technology, specifically a drain screw with a spiral structure. Background Technology

[0002] A drain plug is a type of screw used in machinery or equipment to drain lubricating oil or other liquids. Its function is to facilitate maintenance and allow for regular oil changes, ensuring smooth equipment operation. Currently, during installation, when draining liquids from certain machinery or automotive engines, the drain plug needs to be completely removed. Repeated removal and disassembly can lead to thread wear, accelerating equipment aging and directly reducing the screw's sealing performance, increasing the possibility of oil leaks. This compromises the drain plug's sealing effect and reduces its overall performance, indirectly affecting its durability and sealing capabilities.

[0003] Therefore, it is necessary to develop an oil drain screw with a spiral structure. Utility Model Content

[0004] The purpose of this utility model is to provide an oil drain screw with a spiral structure to solve the problem of oil leakage caused by repeated removal of the oil drain screw, which leads to thread wear.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an oil drain screw with a spiral structure, comprising an oil drain screw, wherein an internal thread groove is provided on the upper surface of the oil drain screw, an oil drain hole is provided on the lower side of one side of the outer wall of the oil drain screw, a base plate is installed at the bottom of the inner end of the oil drain screw, and a sealing seat is installed at the center of the inner end of the oil drain screw.

[0006] A spiral sealing assembly is installed inside the upper part of the drain screw. The spiral sealing assembly includes a spiral sealing head, and a guide post is installed at the bottom of the spiral sealing head.

[0007] Preferably, a limiting ring A is installed at the bottom center of the base plate, and a sealing gasket is provided at the top of the limiting ring A.

[0008] Preferably, a spring is installed on the outer wall of the limiting ring A, and the spring is located inside the drain screw.

[0009] Preferably, the outer wall of the sealing seat is slidably connected to the inside of the drain screw, and a limit ring B is installed at the bottom of the sealing seat.

[0010] Preferably, the limiting ring B and the sealing seat have an oil outlet hole at their internal center positions.

[0011] Preferably, the outer wall of the spiral sealing head is threadedly connected to the inner thread of the internal thread groove, and a guide ring is installed at the bottom end of the guide post.

[0012] Preferably, the upper inner part of the guide ring is rotatably connected to the bottom end of the guide post, and a sealing ring is installed on the outer wall of the guide ring.

[0013] Preferably, the inside of the sealing ring is slidably connected to the outer wall of the guide ring, and the guide ring is located inside the drain screw.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By installing the spiral sealing head into the internal thread groove of the drain screw via a threaded connection, and rotatably connecting its guide ring to the bottom end of the guide post on the spiral sealing head, when draining oil from the drain screw is required, simply loosen it with a tool and remove the spiral sealing head until the spring pushes the sealing seat back to its original position. During draining, there is no need to remove the entire drain screw; only the spiral sealing head needs to be removed. If the spiral sealing head is damaged inside the drain screw, the drain screw can also be removed. This double protection ensures stable draining and minimizes the risk of oil leakage caused by thread wear from repeated removal of the drain screw. This effectively improves the performance of the drain screw and indirectly enhances its durability and sealing performance. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present utility model.

[0018] Figure 3 An exploded view of the internal structure provided for this utility model;

[0019] Figure 4 This is an enlarged schematic diagram of a selected portion of the structure provided by this utility model.

[0020] In the diagram: 1. Drain screw; 101. Internal thread groove; 102. Drain hole; 2. Base plate; 201. Limiting ring A; 202. Sealing gasket; 203. Spring; 3. Sealing seat; 301. Limiting ring B; 302. Oil outlet hole; 4. Spiral sealing head; 401. Guide post; 402. Guide ring; 403. Sealing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides the following technical solution: an oil drain screw with a spiral structure, please refer to... Figures 1-4 The system includes an oil drain screw 1, with an internal threaded groove 101 on its upper surface and an oil drain hole 102 on one side of its outer wall. A base plate 2 is installed at the bottom of the oil drain screw 1, with a limit ring A201 installed at the center of the bottom of the base plate 2. A sealing gasket 202 is provided at the top of the limit ring A201, and a spring 203 is installed on the outer wall of the limit ring A201, located inside the oil drain screw 1. A sealing seat 3 is installed at the center of the interior of the oil drain screw 1, with its outer wall slidably connected to the interior of the oil drain screw 1. A limit ring B301 is installed at the bottom of the sealing seat 3, and an oil outlet hole is provided at the center of both the limit ring B301 and the interior of the sealing seat 3. 302. Fix the base plate 2 to the inner bottom of the drain screw 1, and fit the spring 203 onto the outer wall of the limiting ring A201 on the base plate 2. According to the limiting ring B301 on the sealing seat 3, which is fitted onto the top of the spring 203, and taking advantage of the elastic reaction force of the spring 203, when the sealing seat 3 is under pressure, it moves downward and presses against the surface of the sealing gasket 202 on the limiting ring A201, thus sealing the drain screw 1. When the sealing seat 3 is under no pressure, the spring 203 pushes the sealing seat 3 to reset and move away from the sealing gasket 202, so that the liquid can be discharged from the drain hole 302, thus achieving the sealing and draining of the drain screw 1.

[0023] A spiral sealing assembly is installed inside the upper part of the drain screw 1. The spiral sealing assembly includes a spiral sealing head 4, a guide post 401 is installed at the bottom of the spiral sealing head 4, and the outer wall of the spiral sealing head 4 is threadedly connected to the inner thread groove 101. A guide ring 402 is installed at the bottom end of the guide post 401, and the upper part of the guide ring 402 is rotatably connected to the bottom end of the guide post 401. A sealing ring 403 is installed on the outer wall of the guide ring 402, and the inner part of the sealing ring 403 is slidably connected to the outer wall of the guide ring 402. The guide ring 402 is located inside the drain screw 1. The spiral sealing head 4 is installed in the inner thread groove 101 on the drain screw 1 by means of a threaded connection, and its guide... The guide post 401 on the spiral sealing head 4 is rotatably connected to the ring 402. When oil draining is required, simply loosen the screw 1 with a tool and remove the spiral sealing head 4 until the spring 203 pushes the sealing seat 3 to reset. During oil draining, it is not necessary to remove the entire screw 1; only the spiral sealing head 4 needs to be removed to complete the oil draining operation. If the spiral sealing head 4 is damaged inside the screw 1, the screw 1 can also be removed. This double protection ensures stable oil draining and minimizes the risk of oil leakage caused by thread wear due to repeated removal of the screw.

[0024] Working principle: When using this utility model, the base plate 2 is fixed to the inner bottom of the drain screw 1, and the spring 203 is fitted onto the outer wall of the limiting ring A201 on the base plate 2. The limiting ring B301 on the sealing seat 3 is fitted onto the top of the spring 203. Utilizing the elastic reaction force of the spring 203, when the sealing seat 3 is under pressure, it moves downwards and presses against the surface of the sealing gasket 202 on the limiting ring A201, sealing the oil outlet 302. This achieves a sealing treatment for the drain screw 1. When the sealing seat 3 is depressurized, the spring 203 pushes the sealing seat 3 back to its original position, away from the sealing gasket 202, allowing liquid to drain from the oil outlet 302. This achieves both sealing and draining of the drain screw 1. The spiral sealing head 4 is installed on the internal thread of the drain screw 1 via a threaded connection. Inside the groove 101, the guide ring 402 is rotatably connected to the bottom end of the guide post 401 on the spiral sealing head 4. When oil draining is required, simply loosen the screw 1 with a tool and remove the spiral sealing head 4 until the spring 203 pushes the sealing seat 3 to reset. During oil draining, it is not necessary to remove the entire screw 1; only the spiral sealing head 4 needs to be removed to complete the oil draining operation. When the spiral sealing head 4 is damaged inside the screw 1, the screw 1 can also be removed. With this double protection, stable oil draining is ensured, minimizing the risk of oil leakage caused by thread wear due to repeated removal of the screw. This effectively improves the performance of the screw and indirectly improves its durability and sealing performance.

[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An oil drain screw with a spiral structure, comprising an oil drain screw (1), wherein an internal thread groove (101) is formed on the upper surface of the oil drain screw (1), and an oil drain hole (102) is formed on the lower side of one side of the outer wall of the oil drain screw (1), characterized in that: A base plate (2) is installed at the bottom of the inside of the drain screw (1), and a sealing seat (3) is installed at the center of the inside of the drain screw (1); A spiral sealing assembly is installed on the upper part of the inside of the drain screw (1). The spiral sealing assembly includes a spiral sealing head (4), and a guide post (401) is installed at the bottom of the spiral sealing head (4).

2. The oil drain screw with a spiral structure according to claim 1, characterized in that: A limiting ring A (201) is installed at the bottom center of the base plate (2), and a sealing gasket (202) is provided at the top of the limiting ring A (201).

3. The oil drain screw with a spiral structure according to claim 2, characterized in that: A spring (203) is installed on the outer wall of the limiting ring A (201), and the spring (203) is located inside the drain screw (1).

4. The oil drain screw with a spiral structure according to claim 1, characterized in that: The outer wall of the sealing seat (3) is slidably connected to the inside of the drain screw (1), and a limit ring B (301) is installed at the bottom of the sealing seat (3).

5. The oil drain screw with a spiral structure according to claim 4, characterized in that: An oil outlet hole (302) is provided at the center of the inner part of the limiting ring B (301) and the sealing seat (3).

6. The oil drain screw with a spiral structure according to claim 1, characterized in that: The outer wall of the spiral sealing head (4) is connected to the internal thread of the internal thread groove (101), and a guide ring (402) is installed at the bottom end of the guide post (401).

7. An oil drain screw with a spiral structure according to claim 6, characterized in that: The upper interior of the guide ring (402) is rotatably connected to the bottom end of the guide post (401), and a sealing ring (403) is installed on the outer wall of the guide ring (402).

8. An oil drain screw with a spiral structure according to claim 7, characterized in that: The interior of the sealing ring (403) is slidably connected to the outer wall of the guide ring (402), and the guide ring (402) is located inside the drain screw (1).

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