Anti-blocking drain well grate
The locking structure, which combines a flip plate with a rotating locking shaft, solves the problems of easy clogging and safety hazards in traditional sewage well grates, achieving rapid cleaning and stable use.
Patent Information
- Application Number
- CN202522193883.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-10-17
AI Technical Summary
Traditional sewage well grates are easily clogged by debris, making them inconvenient to operate and posing safety hazards. Existing openable or movable well grate designs are complex in structure and lack an effective locking mechanism.
It adopts a flip-up plate structure, combined with the locking structure of the rotating locking shaft and the positioning frame. The flip plate can be fixed or released by operating the nut, ensuring stability under normal use, preventing displacement or flipping, and quickly clearing blockages.
It enables quick removal of debris, avoids blockages that affect drainage, improves safety and ease of maintenance, and reduces the frequency of manual cleaning and maintenance costs.
Smart Images

Figure CN223661005U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewage well grates, specifically an anti-clogging sewage well grate. Background Technology
[0002] Sewage grates are an important component of municipal drainage systems, used to filter solid debris from sewage and prevent pipe blockage.
[0003] Traditional sewage well grates mostly use fixed grid structures, which are easily clogged by debris such as leaves and plastic bags during use. This not only affects drainage efficiency but also requires frequent manual cleaning, posing operational risks and incurring high maintenance costs. Although some existing technologies offer openable or movable well grate designs, their complex structures and inconvenient operation, coupled with the lack of effective locking mechanisms, make them prone to accidental opening or displacement under the impact of passing vehicles or water flow, posing safety hazards.
[0004] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A clog-resistant sewage well grate includes an installation frame, in which a flipping frame is movably embedded. The flipping frame includes two flipping plates, and the two flipping plates are hinged to the two sides of the installation frame via two shafts. A flipping locking structure is installed at the center of the rear end of the installation frame, and one end of the flipping locking structure is connected to the two flipping plates respectively.
[0007] The flip-locking structure includes: a receiving cavity, two positioning cavities, a rotation locking shaft, and a positioning frame;
[0008] The receiving cavity is located at the center of the rear wall of the mounting frame, the two positioning cavities are respectively located on one side of the rear wall of the two flip plates, the two ends of the rotation locking shaft respectively movably pass through the upper and lower walls of the receiving cavity, and the positioning frame is movably embedded in the two flip plates and the rotation locking shaft.
[0009] Preferably, the rotation locking shaft includes: an operating shaft, a positioning plate, and an operating nut;
[0010] The two ends of the operating shaft respectively movably pass through the upper and lower walls of the receiving cavity. A positioning plate is fixed on the side wall of the operating shaft. When the positioning plate rotates with the operating shaft to the first angle, the positioning plate is simultaneously embedded in the two positioning cavities to lock the flip plate. When the positioning plate rotates to the second angle, it completely disengages from the positioning cavity and is received in the receiving cavity to allow the flip plate to flip. The operating nut is fixedly installed on the top of the operating shaft.
[0011] Preferably, the positioning frame includes: two positioning holes, two mounting holes, and a connecting frame body;
[0012] Both positioning holes are located on the upper end of the positioning piece, and the two mounting holes are located on the upper surface of the two flip plates and communicate with the two positioning cavities. The two ends of the connecting frame are respectively movably inserted through the two mounting holes and movably fitted into the two positioning holes.
[0013] Preferably, the upper ends of the two flip plates are evenly provided with a plurality of drainage holes.
[0014] Preferably, the positioning piece is a semi-circular positioning piece.
[0015] Beneficial effects
[0016] This utility model provides an anti-clogging sewage well grate, which has the following beneficial effects:
[0017] By incorporating a flip-up plate structure, the plate can be manually flipped in case of water accumulation or blockage, quickly removing debris and preventing blockages from affecting drainage. The system employs a locking structure combining a rotating locking shaft and a positioning frame, allowing the flip plate to be fixed or released simply by operating the nut, facilitating daily maintenance and cleaning. The flip plate is hinged to the mounting frame via a shaft, and the combination of a semi-circular positioning plate and positioning holes ensures the grate remains stable under normal use, preventing displacement or flipping. The flip-up locking structure provides bidirectional locking, preventing accidental opening of the grate due to external impacts or vehicle traffic, thus enhancing safety. Attached Figure Description
[0018] Figure 1 This is a front-view three-dimensional structural diagram of an anti-clogging sewage well grate according to the present invention.
[0019] Figure 2 This is a top sectional view of the anti-clogging sewage well grate of this utility model.
[0020] Figure 3 The present invention relates to an anti-clogging sewage well grate. Figure 1 Enlarged structural diagram at point A in the middle.
[0021] Figure 4 The present invention relates to an anti-clogging sewage well grate. Figure 2 Enlarged structural diagram at point B.
[0022] In the diagram: 1. Mounting frame, 2. Flip plate, 3. Receiving cavity, 4. Positioning cavity, 5. Operating shaft, 6. Positioning plate, 7. Operating nut, 8. Positioning hole, 9. Mounting hole, 10. Connecting frame, 11. Drain hole. Detailed Implementation
[0023] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] Example: Please refer to Figure 1-4 A clog-resistant sewage well grate includes an installation frame 1, a flip frame is movably embedded in the installation frame 1, the flip frame includes two flip plates 2, the two flip plates 2 are hinged to the two sides inside the installation frame 1 through two shafts at both ends, and a flip locking structure is installed at the center of the rear end of the installation frame 1, one end of the flip locking structure is connected to the two flip plates 2 respectively.
[0025] The flip-locking structure includes: a receiving cavity 3, two positioning cavities 4, a rotation locking shaft, and a positioning frame;
[0026] The receiving cavity 3 is located at the center of the rear wall of the mounting frame 1. The two positioning cavities 4 are respectively located on one side of the rear wall of the two flip plates 2. The two ends of the rotating locking shaft are respectively movably inserted through the upper and lower walls of the receiving cavity 3. The positioning frame is movably embedded in the two flip plates 2 and the rotating locking shaft.
[0027] During the installation of the grate, the workers first fix the installation frame 1 in the designated position by pouring concrete. Then, they hinge and fix the two flip plates 2 inside the installation frame 1 using a shaft. Next, they fit the two flip plates 2 into the interior of the installation frame 1. Then, they operate the rotating locking shaft inside the installation frame 1. One end of the rotating locking shaft is inserted into the two positioning cavities 4 to limit the flip plates 2, ensuring that the flip plates 2 remain stable under normal use and are not prone to displacement or flipping. Then, the rotating locking shaft is rotated and limited by the positioning frame to further ensure the stability of the flip plates 2. When water accumulates or becomes blocked, the positioning frame is pulled out, and then the rotating locking shaft is operated to separate one end from the two positioning cavities 4 and place it in the receiving cavity 3, releasing the limiting effect on the two flip plates 2. The two flip plates 2 can then be flipped up inside the installation frame 1 by the shaft to quickly clear blockages and achieve rapid drainage.
[0028] In the specific implementation process, the rotating locking shaft includes: operating shaft 5, positioning plate 6, and operating nut 7;
[0029] The two ends of the operating shaft 5 are respectively movably inserted through the upper and lower walls of the receiving cavity. A positioning piece 6 is fixed on the side wall of the operating shaft 5. When the positioning piece 6 rotates with the operating shaft 5 to the first angle, the positioning piece 6 is simultaneously embedded in the two positioning cavities 4 to lock the flip plate 2. When the positioning piece 6 rotates to the second angle, it completely disengages from the positioning cavity 4 and is received in the receiving cavity 3 to allow the flip plate 2 to flip. The operating nut 7 is fixedly installed on the top of the operating shaft 5.
[0030] When the flip plate 2 is flipped and limited, the operator turns the operating nut 7, which drives the operating shaft 5 and the positioning plate 6 to rotate. When the positioning plate 6 is in the two positioning cavities 4, the flip plate 2 is limited to rotation. When the positioning plate 6 rotates into the receiving cavity 3, the flipping limitation of the flip plate 2 is released, and the flipping operation of the flip plate 2 can be realized.
[0031] In the specific implementation process, the positioning frame includes: two positioning holes 8, two mounting holes 9, and a connecting frame body 10;
[0032] Both positioning holes 8 are opened on the upper end of the positioning piece 6, and two mounting holes 9 are opened on the upper wall of the two flip plates 2 respectively, and are connected to the two positioning cavities 4. The two ends of the connecting frame 10 are respectively movably inserted through the two mounting holes 9 and movably embedded in the two positioning holes 8.
[0033] When locking the operating shaft 5, the operator first rotates the positioning piece 6 into the two positioning cavities 4, and then inserts the connecting frame 10 into the two mounting holes 9 and the two positioning holes 8 to limit the rotation of the positioning piece 6, thereby realizing the rotation limit operation of the operating shaft 5.
[0034] In the specific implementation process, several drainage holes 11 are evenly opened on the upper end of the two flip plates 2, which can effectively intercept debris and ensure good water flow performance.
[0035] In the specific implementation process, the positioning piece 6 is a semi-circular positioning piece. When the limiting of the flip plate 2 is released, it can be completely stored in the receiving cavity 3 without affecting the normal opening and closing of the flip plate 2.
[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 clogging-preventing type sewage well grate comprising a mounting frame (1), characterized in that, The installation frame (1) is movably embedded with a turnover frame, the turnover frame comprises two turnover plates (2), two ends of the two turnover plates (2) are hingedly connected to both sides of the installation frame (1), a turnover locking structure is installed at the center of the rear end of the installation frame (1), one end of the turnover locking structure is connected with the two turnover plates (2) respectively; The turnover locking structure comprises a containing cavity (3), two positioning cavities (4), a rotating locking shaft and a positioning frame; The containing cavity (3) is arranged at the center of the rear wall of the installation frame (1), the two positioning cavities (4) are arranged at one side of the rear wall of the two turnover plates (2) respectively, and the two ends of the rotating locking shaft are movably penetrated through the upper and lower walls of the containing cavity (3), and the positioning frame is movably embedded in the two turnover plates (2) and the rotating locking shaft.
2. The anti-clogging type sewage well grate according to claim 1, characterized in that, The rotating locking shaft comprises an operating shaft (5), a positioning piece (6) and an operating nut (7); The two ends of the operating shaft (5) are movably penetrated through the upper and lower walls of the containing cavity, the positioning piece (6) is fixed on the side wall of the operating shaft (5), when the positioning piece (6) is rotated to a first angle with the operating shaft (5), the positioning piece (6) is embedded in the two positioning cavities (4) at the same time to lock the turnover plates (2), when the positioning piece (6) is rotated to a second angle, it is completely separated from the positioning cavities (4) and accommodated in the containing cavity (3), so as to allow the turnover plates (2) to be turned over, and the operating nut (7) is fixedly installed at the top end of the operating shaft (5).
3. A non-clogging type sewage well grate according to claim 2, characterized in that, The positioning frame comprises two positioning holes (8), two mounting holes (9) and a connecting frame body (10); The two positioning holes (8) are arranged at the upper end of the positioning piece (6), the two mounting holes (9) are arranged at the upper wall of the two turnover plates (2) respectively and communicate with the two positioning cavities (4), and the two ends of the connecting frame body (10) are movably penetrated through the two mounting holes (9) and movably embedded in the two positioning holes (8).
4. The anti-clogging type sewage well grate according to claim 1, characterized in that, A plurality of drain holes (11) are evenly arranged at the upper end of the two turnover plates (2).
5. The anti-clogging type sewage well grate according to claim 2, characterized in that, The positioning piece (6) is a semicircular positioning piece.