Plug with filtering function
By designing a plug structure with an internal filter, the problem of complicated installation caused by external filter structures is solved, enabling quick plug connection and efficient filtration, thus improving the work efficiency and filtration effect of the oil filling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI MAOJUN MOLDING TECHNOLOGY CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-17
AI Technical Summary
The existing plug requires an external filter structure during the oil filling process, which makes the installation process cumbersome and affects work efficiency.
A plug with a filtering function is designed, comprising a plug body, a filtering component and a sealing component. By setting a fixing frame, a support plate, a filter screen and an elastic element, quick snap-fit and sealing are achieved, and the built-in filter screen can directly filter oil.
It improves the efficiency of the oil injection process, enhances the filtration effect, ensures the filtration effect of the oil during injection, and prevents water from entering the oil tank during flushing.
Smart Images

Figure CN224135168U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plug technology, and in particular to a plug with a filtering function. Background Technology
[0002] Plugs are commonly used in various industrial equipment and everyday life scenarios. In industry, they are used to seal ports such as pipes, oil tanks, and reaction vessels. In daily life, they are also used in water pipe repairs. Their main function is to prevent fluid leakage, prevent impurities from entering, ensure the normal operation of the system, maintain equipment performance, and facilitate operation during equipment maintenance to achieve partial sealing.
[0003] In practical applications, existing plug technologies, using sealing gaskets and silicone sealant in conjunction with other materials, can meet the basic sealing requirements, but the following problems still exist:
[0004] Plugs used for sealing oil tanks are usually made of larger sizes. However, when filling new oil, due to the structural characteristics of the plug itself, an additional filter structure needs to be installed outside the oil tank during the oil filling process. The installation process of the external filter structure is relatively cumbersome and affects work efficiency. Therefore, this application provides a plug with a filtering function to meet the needs. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a plug with a filtering function.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a plug with a filtering function, comprising a plug body and a fixing frame disposed on the top of the plug body;
[0007] A filter assembly is placed in the inner cavity of the plug body. The filter assembly includes a sleeve installed on the inner wall of the plug body. A first support plate is fixedly connected to the top of the sleeve. A second support plate is provided on the top of the first support plate. A second fixing block is fixedly connected to the bottom of the second support plate. A filter screen is provided on the side of the first support plate away from the sleeve.
[0008] A sealing assembly is placed on top of the filter assembly. The sealing assembly includes a retaining ring installed at the bottom of the mounting bracket, and a sealing plate is provided on the top of the retaining ring.
[0009] Furthermore, a first fixing block is fixedly connected to the side of the second support plate, and the bottom of the first fixing block is slidably connected to the top of the first support plate.
[0010] The technical effect of adopting the above technical solution is that by setting the first fixed block, the movement trajectory of the second support plate can be limited.
[0011] Furthermore, elastic elements are fixedly connected to both ends of the second fixing block, and a first groove is provided at the bottom of the sleeve.
[0012] The technical effect of adopting the above technical solution is that the positions of the second support plate and the filter screen can be fixed by the cooperation of the second fixing block, the elastic element and the first groove.
[0013] Furthermore, a touch block is also fixedly connected to the bottom of the second support plate.
[0014] The technical effect of adopting the above technical solution is that by setting the touch block, the elastic element can be prompted to enter the inner cavity of the first groove.
[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0016] By setting the plug body, the filter and sealing components are protected. By setting the fixing bracket, the fixing ring is supported. By setting the second support plate on the top of the first support plate and cooperating with the sleeve, the top can be sealed after snapping, preventing oil from entering the inner cavity of the sleeve when passing through. By cooperating with the second fixing block and the elastic element, the position of the second support plate can be fixed, thereby achieving the effect of quick snapping of the filter screen. By setting the filter screen, the oil can be filtered directly during oil filling, effectively improving work efficiency. At the same time, by setting the filter screen into a spiral shape, the contact time between the oil and the filter screen can be increased, improving the filtration effect. By setting the sealing plate on the top of the fixing ring, water can be prevented from entering the oil tank when rinsing the oil tank connection. Attached Figure Description
[0017] Figure 1 A three-dimensional structural diagram of a plug with a filtering function provided by this utility model;
[0018] Figure 2 A schematic diagram of the internal cross-sectional structure of a plug with a filtering function provided by this utility model;
[0019] Figure 3 A cross-sectional view of a filter assembly with a filter function provided by this utility model;
[0020] Figure 4 This is a cross-sectional view of a plug sealing assembly with a filtering function provided by this utility model.
[0021] Legend:
[0022] 1. End cap body; 11. Fixing bracket;
[0023] 2. Filter assembly; 21. Sleeve; 22. First support plate; 23. Second support plate; 24. First fixing block; 25. Second fixing block; 26. Elastic element; 27. First groove; 28. Contact block; 29. Filter screen;
[0024] 3. Sealing assembly; 31. Collar; 32. Base plate; 33. Retaining ring; 34. Sealing plate; 35. Slide rod; 36. Second groove; 37. Third groove; 38. Sealing ring. Detailed Implementation
[0025] 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.
[0026] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a plug body 1 and a fixing frame 11 disposed on the top of the plug body 1;
[0027] The filter assembly 2 is placed in the inner cavity of the plug body 1. The filter assembly 2 includes a sleeve 21 installed on the inner wall of the plug body 1. A first support plate 22 is fixedly connected to the top of the sleeve 21. A second support plate 23 is provided on the top of the first support plate 22. A second fixing block 25 is fixedly connected to the bottom of the second support plate 23. A filter screen 29 is provided on the side of the first support plate 22 away from the sleeve 21.
[0028] A sealing assembly 3 is placed on top of the filter assembly 2. The sealing assembly 3 includes a fixing ring 33 mounted on the bottom of the fixing frame 11, a sealing plate 34 on top of the fixing ring 33, a first fixing block 24 fixedly connected to the side of the second support plate 23, the bottom of the first fixing block 24 slidably connected to the top of the first support plate 22, and elastic elements 26 fixedly connected to both ends of the second fixing block 25. A first groove 27 is formed at the bottom of the sleeve 21, and a contact block 28 is fixedly connected to the bottom of the second support plate 23. The first support plate 22 mounted on the top of the sleeve 21 supports the second support plate 23 and the filter screen 29. The first fixing block 24 on the side can limit the movement trajectory of the second support plate 23. By setting the opposite side of the contact block 28 and the first groove 27 with mutually matching slopes, when the bottom of the contact block 28 contacts the top of the first groove 27, the contact block 28 causes the second fixing block 25 and the elastic member 26 to move towards the end closer to the sleeve 21. When the second fixing block 25 moves to a certain position, the elastic member 26 releases stress, thereby causing the second support plate 23 to engage with the inner cavity of the first groove 27. By setting the filter screen 29 in a spiral shape, the time that the oil stays on the surface of the filter screen 29 can be extended during oil filling, effectively improving the filtration efficiency.
[0029] Furthermore, such as Figure 2 and Figure 4 As shown: A collar 31 is rotatably connected to the bottom of the fixed ring 33. A base plate 32 is fixedly connected to the inner wall of the collar 31. The side of the base plate 32 is fixedly connected to the inner wall of the fixing frame 11. A second groove 36 is formed on the top of the base plate 32. A slide rod 35 is slidably connected to the inner cavity of the second groove 36. The top of the slide rod 35 is fixedly connected to the bottom of the sealing plate 34. By rotating the collar 31 connected to the bottom of the fixed ring 33, the closing of the sealing plate 34 can be controlled. When sealing storage and rinsing are required, the collar 31 can be manually turned clockwise to allow the sealing plate 34 to close. The base plate 32 drives the slide rod 35 to move along the inner cavity of the second groove 36, thereby achieving the effect of closing the sealing plate 34 through the slide rod 35. The third groove 37 opened on the top of the fixing ring 33 ensures that the movement trajectory of the slide rod 35 will not deviate, effectively improving the overall stability of the filter assembly 2. By setting the sealing plate 34, the inner cavity of the oil tank can be sealed. Similarly, when oil needs to be added, the sealing plate 34 can be released from the closed state by turning the collar 31 counterclockwise through the base plate 32.
[0030] When the sealing plate 34 is closed and flushed with water, because the sealing plate 34 is manually closed and opened via the collar 31, a certain positional shift will occur when receiving the water flush, such as... Figure 4As shown: In this solution, a third groove 37 is provided on the top of the base plate 32, and a sealing ring 38 is fixedly connected to the side of the sealing plate 34. By setting the shape of the sealing ring 38 to fit together, they can interlock when the sealing plate 34 is closed, thereby preventing the sealing effect of the sealing plate 34 from being affected when the water flows.
[0031] Working principle:
[0032] like Figure 1-4 As shown:
[0033] In use: First, push the prepared filter screen 29 into the inner cavity of the sleeve 21. When the second support plate 23 moves to a certain position, the bottom of the contact block 28 contacts the top of the first groove 27, thereby causing the contact block 28 to drive the second fixing block 25 and the elastic element 26 to move closer to the end of the sleeve 21. When the second fixing block 25 moves to a certain position, the elastic element 26 releases stress, thereby engaging with the inner cavity of the first groove 27, thus completing the installation of the filter screen 29. After installation, fix the sealing assembly 3 to the plug body 1 using the external mounting bracket. The side of the plug body 1 is sealed and protected. When oil injection is required, the collar 31 is rotated counterclockwise by hand, which drives the slide rod 35 to move along the inner cavity of the second groove 36 through the base plate 32. When the slide rod 35 moves to a certain position, the side of the slide rod 35 contacts the inner cavity of the third groove 37, which can continue to change the movement trajectory and cause the sealing plate 34 to be released. After the sealing plate 34 is released, the pipe is directly connected to the inner cavity of the fixing ring 33, so that the injected oil can be filtered through the filter screen 29.
[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A plug having a filtering function, characterized by comprising: include: The plug body (1) and the fixing bracket (11) disposed on the top of the plug body (1); A filter assembly (2) is placed in the inner cavity of the plug body (1). The filter assembly (2) includes a sleeve (21) installed on the inner wall of the plug body (1). A first support plate (22) is fixedly connected to the top of the sleeve (21). A second support plate (23) is provided on the top of the first support plate (22). A second fixing block (25) is fixedly connected to the bottom of the second support plate (23). A filter screen (29) is provided on the side of the first support plate (22) away from the sleeve (21). A sealing assembly (3) is placed on top of the filter assembly (2). The sealing assembly (3) includes a fixing ring (33) installed at the bottom of the fixing frame (11), and a sealing plate (34) is provided on the top of the fixing ring (33).
2. The plug with filtering function according to claim 1, characterized in that, The side of the second support plate (23) is fixedly connected to a first fixing block (24), and the bottom of the first fixing block (24) is slidably connected to the top of the first support plate (22).
3. The plug with filtering function according to claim 1, characterized in that, Both ends of the second fixing block (25) are fixedly connected with elastic elements (26), and the bottom of the sleeve (21) is provided with a first groove (27).
4. The plug with filtering function according to claim 1, characterized in that, A touch block (28) is also fixedly connected to the bottom of the second support plate (23).
5. The plug with filtering function according to claim 1, characterized in that, The bottom of the fixed ring (33) is rotatably connected to a collar (31), and the inner wall of the collar (31) is fixedly connected to a base plate (32). The side of the base plate (32) is fixedly connected to the inner wall of the fixed frame (11).
6. The plug with filtering function according to claim 5, characterized in that, The top of the base plate (32) is provided with a second groove (36), and a slide rod (35) is slidably connected to the inner cavity of the second groove (36). The top of the slide rod (35) is fixedly connected to the bottom of the sealing plate (34).
7. The plug with filtering function according to claim 5, characterized in that, The top of the base plate (32) is provided with a third groove (37), and a sealing ring (38) is fixedly connected to the side of the sealing plate (34).