A urea filling port structure designed to prevent clogging
By designing an anti-clogging urea filling port structure and utilizing components such as slots and rotating grooves to achieve solid particle filtration and filling control, the problem of easy clogging and overflow of traditional urea filling ports is solved, realizing component stability and precise filling, and improving the operating efficiency and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN JINYU INTELLIGENT MACHINERY CO LTD
- Filing Date
- 2025-10-27
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional urea filling ports lack an effective filtration structure, making the filter screen difficult to disassemble, clean, or replace, prone to clogging, and easy to overflow when overfilled, affecting the denitrification efficiency of the SCR system and equipment safety.
A clog-resistant urea filling port structure was designed, comprising components such as slots, rotating grooves, mounting plates, springs, locking blocks, and filter plates, to achieve filtration of solid particles and contaminants, and is equipped with a detachable filter plate and top block device to prevent overfilling.
It effectively intercepts solid particles and pollutants, extends component life, ensures filter plate stability, prevents clogging and overflow, precisely controls the filling amount, reduces maintenance costs, and improves the denitrification efficiency and equipment safety of the SCR system.
Smart Images
Figure CN224579381U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of urea filling port technology, specifically a urea filling port structure that prevents clogging. Background Technology
[0002] During storage and filling, urea solution is prone to contamination by external dust and impurities, or crystallization at low temperatures, which can clog the pump and nozzle in the urea system, affecting the denitrification efficiency of the SCR (Selective Catalytic Reduction) system and potentially causing equipment emissions to fail to meet standards. Commercial vehicles, construction machinery, and other equipment that use urea are often in dusty and complex environments. Traditional filling ports lack effective filtration or have fixed filtration structures, failing to meet the needs for long-term anti-clogging and convenient maintenance, or are only equipped with basic filters.
[0003] Meanwhile, application number CN202022959142.4 discloses a filling port structure for a urea tank and a urea tank, including a filling pipe sealed to the tank body of the urea tank, with two ports being an inlet and an outlet, through which urea solution flows sequentially into the tank body; and a filter assembly comprising a support frame and a filter screen, the support frame including a circumferential frame and a bottom frame, the circumferential frame being cylindrical, the bottom frame being connected to one end of the circumferential frame, the circumferential frame being sleeved and snapped onto the end of the filling pipe having the outlet, and the filter screen being connected to the circumferential frame and the bottom frame for filtering the urea solution flowing out of the outlet.
[0004] However, the following problems were found in the implementation of the relevant technology: the filter screen is inconvenient to disassemble, clean or replace, which leads to the failure of the filter plate function after long-term use, and the filter plate itself is clogged. In addition, it is easy to cause urea to overflow due to overfilling, which corrodes equipment parts and pollutes the environment.
[0005] Therefore, we propose a urea filling port structure that prevents clogging. Utility Model Content
[0006] To address the problems mentioned in the background art, this utility model provides an anti-clogging urea filling port structure, which has the advantages of intercepting solid particles and contaminants, reducing foreign objects entering the filling port, and allowing the filter plate to be quickly disassembled, cleaned, or replaced. At the same time, when the set line is reached, the top block will block the filling port, preventing further filling and thus preventing overfilling.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a urea filling port structure for preventing blockage, comprising a filling port, a slot provided inside the filling port, a rotating groove provided at the bottom of the slot, mounting plates fixedly connected to the upper and lower sides of the rotating groove, a spring fixedly connected to the upper surface of the mounting plate, a locking block fixedly connected to the other end of the spring away from the mounting plate, a filter plate detachably connected inside the filling port, insert blocks fixedly connected to both sides of the filter plate, locking grooves provided on the upper and lower sides of the insert blocks, an extension frame extending below the filling port, a top block slidably connected inside the extension frame, a connecting frame fixedly connected to the outer surface of the top block, a float plate fixedly connected to the outer surface of the connecting frame, and the float plate slidably connected to the extension frame.
[0008] Preferably, the top block is conical in shape, and a sealing ring is fixedly connected to the top block.
[0009] Preferably, a sealing strip is provided on the lower surface of the filter plate.
[0010] Preferably, the insert block is slidably connected to the slot, and the insert block is slidably connected to the rotating groove.
[0011] Preferably, the card block engages with the card slot.
[0012] Preferably, an elastic column is fixedly connected to the upper surface of the mounting plate, and the other end of the elastic column is fixedly connected to the locking block.
[0013] Preferably, sliders are fixedly connected to both sides of the top block, and a sliding groove is provided inside the extension frame, with the sliders slidably connected to the sliding groove.
[0014] Preferably, a handle is fixedly connected to the upper surface of the filter plate.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] 1. This utility model, through the cooperation of the filling port, slot, rotating groove, mounting plate, spring, locking block, filter plate, and insert block with the locking groove, can filter solid particles and contaminants through the filter plate, reduce foreign objects entering the filling port, avoid wear, blockage or damage to the pump, sensor, nozzle and spray head by particles, extend the service life of components, and make the filter plate easy to disassemble. The filter plate can be quickly disassembled, cleaned or replaced, shorten maintenance time, reduce downtime costs, and ensure the stability of the filter plate installation to prevent shaking.
[0017] 2. This utility model, through the cooperation of the extension frame, top block, connecting frame and float plate, ensures that when the set line is reached, the top block will block the filling port, preventing further filling and avoiding overfilling. Overfilling of urea can lead to abnormal pressure in the system, which may rupture the urea tank, damage the sensor or seals. This allows for precise control of the filling amount and prevents urea overflow caused by shaking during use, reducing corrosion and pollution. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the filling port connection structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the card block connection structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the filter plate connection structure of this utility model;
[0022] Figure 5 This is a schematic diagram of the top block connection structure of this utility model.
[0023] In the diagram: 1. Filling port; 2. Slot; 3. Rotating groove; 4. Mounting plate; 5. Spring; 6. Locking block; 7. Filter plate; 8. Insert block; 9. Locking groove; 10. Extension frame; 11. Top block; 12. Connecting frame; 13. Float plate; 14. Sealing strip; 15. Sliding block; 16. Slide groove; 17. Elastic column; 18. Handle. Detailed Implementation
[0024] 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.
[0025] like Figures 1 to 5As shown, this utility model provides a urea filling port structure to prevent clogging, including a filling port 1, a sealing cap detachably connected to the filling port 1, a slot 2 provided inside the filling port 1, a rotating groove 3 provided at the bottom of the slot 2, mounting plates 4 fixedly connected to the upper and lower sides of the rotating groove 3, a spring 5 fixedly connected to the upper surface of the mounting plate 4, a locking block 6 fixedly connected to the other end of the spring 5 away from the mounting plate 4, a filter plate 7 detachably connected inside the filling port 1, insert blocks 8 fixedly connected to both sides of the filter plate 7, locking grooves 9 provided on the upper and lower sides of the insert blocks 8, an extension frame 10 extending below the filling port 1, a top block 11 slidably connected inside the extension frame 10, a connecting frame 12 fixedly connected to the outer surface of the top block 11, a float plate 13 fixedly connected to the outer surface of the connecting frame 12, and the float plate 13 slidably connected to the extension frame 10.
[0026] Specifically, the top block 11 is conical in shape, and a sealing ring 14 is fixedly connected to the top block 11 to improve the sealing effect.
[0027] Furthermore, a sealing strip is provided on the lower surface of the filter plate 7 to improve the sealing effect.
[0028] Furthermore, the insert 8 is slidably connected to the slot 2, and the insert 8 is slidably connected to the rotating groove 3.
[0029] It is worth noting that card block 6 and card slot 9 are engaged and connected.
[0030] It is worth noting that an elastic post 17 is fixedly connected to the upper surface of the mounting plate 4, and the other end of the elastic post 17 is fixedly connected to the locking block 6 to ensure the linear movement of the locking block 6 and prevent tilting.
[0031] It is worth mentioning that sliders 15 are fixedly connected to both sides of the top block 11, and a groove 16 is provided inside the extension frame 10. The sliders 15 and the groove 16 are slidably connected to ensure the linear movement of the top block 11 and prevent tilting.
[0032] It is worth emphasizing that a handle 18 is fixedly connected to the upper surface of the filter plate 7 for easy removal of the filter plate 7.
[0033] Among them, the filling port 1 is existing technology and will not be described in detail; the "front, rear, left, and right" perspectives of this device are as follows: Figure 1 The direction shown in the diagram is the reference.
[0034] Working principle: In use, the filter plate 7 is inserted into the slot 2 in the filling port 1 through the insert 8. After the insert 8 reaches the bottom of the slot 2, the filter plate 7 is rotated. The insert 8 on the filter plate 7 slides into the rotating groove 3 as the filter plate 7 rotates, and the insert 8 is pressed and passes through the locking block 6 in the rotating groove 3, so that the locking block 6 is locked in the locking groove 9 on the insert 8. The spring 5 continuously applies elastic force to the locking block 6, fixing the position of the insert 8 and thus fixing the position of the filter plate 7. Then, urea is added through the filling port 1, and the filtration of the filter plate 7 prevents clogging. When the urea tank is almost full, the float plate 13 floats with the liquid level and is connected to the urea tank. The frame 12 drives the top block 11 to slide. The top block 11 slides within the extension frame 10. As the urea level rises, the position of the top block 11 also rises. When the urea is filled to the set liquid level, the liquid level setting can be based on the height between the sealing ring 14 and the bottom of the top block 11. The top block 11 is located at the topmost position within the extension frame 10. At this time, the top block 11 is squeezed into the filling port 1, blocking the bottom of the filling port 1, thus preventing further filling. Since there will be residual urea above the top block 11 during filling, as the urea is used, the float plate 13 drives the top block 11 to slide downwards, causing excess urea to flow downwards into the urea tank.
[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A clog-resistant urea filler neck structure comprising a filler neck (1), characterized in that: The filling port (1) is provided with a slot (2), and the bottom of the slot (2) is provided with a rotating groove (3). The upper and lower sides of the rotating groove (3) are fixedly connected with mounting plates (4). The upper surface of the mounting plate (4) is fixedly connected with a spring (5). The other end of the spring (5) away from the mounting plate (4) is fixedly connected with a locking block (6). The filling port (1) is detachably connected with a filter plate (7). The two sides of the filter plate (7) are fixedly connected with insert blocks (8). The upper and lower sides of the insert blocks (8) are provided with locking grooves (9). The filling port (1) extends below the filling port (1). The extension frame (10) is slidably connected with a top block (11) inside the extension frame (10). The outer surface of the top block (11) is fixedly connected with a connecting frame (12). The outer surface of the connecting frame (12) is fixedly connected with a float plate (13). The float plate (13) is slidably connected with the extension frame (10).
2. A clog resistant urea filler neck structure as defined in claim 1, wherein: The top block (11) is cone-shaped, and a sealing ring (14) is fixedly connected to the top block (11).
3. The anti-clogging urea filler neck structure of claim 1, wherein: A sealing strip is provided on the lower surface of the filter plate (7).
4. The anti-clogging urea filler neck structure of claim 1, wherein: The insert (8) is slidably connected to the slot (2), and the insert (8) is slidably connected to the rotating groove (3).
5. The anti-clogging urea filling port structure according to claim 1, characterized in that: The card block (6) engages with the card slot (9).
6. The anti-clogging urea filler neck structure of claim 1, wherein: An elastic column (17) is fixedly connected to the upper surface of the mounting plate (4), and the other end of the elastic column (17) is fixedly connected to the locking block (6).
7. The anti-clogging urea filler neck structure of claim 1, wherein: The top block (11) is fixedly connected to two sides of a slider (15), and the extension frame (10) is provided with a groove (16), and the slider (15) is slidably connected to the groove (16).
8. The anti-clogging urea filler neck structure of claim 1, wherein: A handle (18) is fixedly connected to the upper surface of the filter plate (7).