A drainage grate that opens and closes automatically

Abstract

The present invention discloses a drainage grate that can be opened and closed automatically, and relates to the field of urban drainage facilities. The grate base is a rectangular frame; an upper grate panel is arranged in the grate base, and the upper grate panel is a hollow structure, including two sub-upper grate panels and hingedly connected; a lower grate panel is arranged below the upper grate panel, and includes two sub-lower grate panels and hingedly connected; the two ends of the upper grate panel are respectively hinged to the two ends of the lower grate panel, and the multiple sub-lower grate panels can be folded downwards to open and close. It can drive multiple upper grate panels to fold upward; the drainage grate is provided with an upper grate panel and a lower grate panel in the grate seat, and the upper grate panel and the lower grate panel are kept in linkage through a hinged manner. The lower grate panel will fold downward and open when it is subjected to the gravity of rainwater, thereby improving the flow capacity. When no rainwater is discharged, the upper grate panel will be unfolded and laid on the grate seat under the force of gravity, driving the lower grate panel to also unfold to intercept debris flowing into the grate seat and prevent debris from entering.

Description

Technical Field

[0001] The present invention belongs to the field of urban drainage facilities, and more particularly, relates to a drainage grate that opens and closes automatically. Background Art

[0002] Stormwater inlets are crucial infrastructure for urban drainage systems and serve as the first step in rainwater collection. Their proper structural design and placement significantly impact urban drainage performance. A stormwater inlet typically consists of a grate, a well, and a connecting pipe. In some more grimy streets, a waste basket is also included. Currently, the vast majority of stormwater grates in cities are simple flat grates, which present numerous drawbacks. Road water cannot be drained promptly, garbage fills up the well, emitting a foul odor, and the grate becomes damaged. This phenomenon is prevalent in major cities across my country, severely impacting the living environment, the cityscape, and even potentially causing various safety issues. These issues impact the very lives of urban residents, and therefore, they urgently need to be addressed.

[0003] Surveys of major urban streets revealed that the main sources of blockage in storm drains are leaves, plastic bags, waste paper, and other household debris, such as cigarette butts and popsicle sticks. When these obstructions clog the grate holes or the connecting pipes to the main water pipes, heavy rain prevents rainwater from draining out quickly, causing waterlogging. Furthermore, prolonged retention of this waste in the drains can lead to rotting and stinking, severely damaging the living environment of urban residents. These pollutants can be divided into rainwater-related and non-rainwater-related pollutants based on their source time. Rainwater-related pollutants enter the drains with rainwater, and to ensure adequate flow during rain, these obstructions, such as gravel, small leaves, and other small obstructions, cannot be completely intercepted. However, non-rainy-day obstructions often contribute significantly to the volume of clogged storm drains. Some drains become garbage outlets, with garbage simply being dumped into the drains when no trash receptacles are available. Some sanitation workers may be lazy and simply sweep garbage into the drains, a completely avoidable occurrence. In short, eliminating blockages during non-rainy periods and reducing the amount of blockages entering the stormwater inlets during rainy periods while ensuring flow is an urgent issue that needs to be addressed. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and to provide a drainage grate that automatically opens and closes. The drainage grate is respectively provided with an upper grate panel and a lower grate panel in a grate seat. The upper grate panel and the lower grate panel are hinged to keep the upper grate panel and the lower grate panel linked. The lower grate panel will fold downward when it is subjected to the gravity of rainwater to improve the flow capacity. When no rainwater is discharged, the upper grate panel will unfold and be laid on the grate seat under the influence of gravity, driving the lower grate panel to also unfold to intercept debris flowing into the grate seat to prevent debris from entering.

[0005] In order to achieve the above object, the present invention provides a drainage grate that automatically opens and closes, comprising:

[0006] A grate seat, wherein the grate seat is a rectangular frame;

[0007] An upper grate panel is arranged in the grate seat, the upper grate panel is a hollow structure, and the upper grate panel includes two sub-upper grate panels, and the two sub-upper grate panels are hingedly connected;

[0008] A lower grate panel is provided below the upper grate panel, the lower grate panel comprising two sub-lower grate panels, and the two sub-lower grate panels are hingedly connected;

[0009] The two ends of the upper grate panel are respectively hinged to the two ends of the lower grate panel, and the two sub-lower grate panels can be folded downward to drive the two sub-upper grate panels to be folded upward.

[0010] Optionally, a mounting hole is provided on the outer periphery of the grate seat.

[0011] Optionally, the outer wall of the upper grate panel is slidably fitted with the inner wall of the grate seat.

[0012] Optionally, an annular support plate is provided on the inner circumference of the grate seat, an upper grate panel receiving groove is formed above the support plate, and the sub-upper grate panel can slide on the support plate.

[0013] Optionally, the two sub-upper grate panels are connected by a first hinge, one end of the sub-upper grate panel is connected to the first hinge through a first mounting hole, the other end of the sub-upper grate panel is provided with a first bent portion, one end of the first bent portion is connected to the sub-upper grate panel in a U shape, the other end of the first bent portion is provided with a second mounting hole, and the second mounting hole is used to hinge with the end of the lower grate panel through a second hinge.

[0014] Optionally, the sub-upper grate panel is provided with first flanges at both ends along the width direction of the upper grate panel, and the first flanges are connected to the sub-upper grate panel in an L-shape.

[0015] Optionally, both ends of the lower grate panel cooperate with the inner wall of the grate seat.

[0016] Optionally, there is a gap between the two ends of the sub-lower grate panel along the width direction of the lower grate panel and the support plate.

[0017] Optionally, the two sub-lower grate panels are connected by a third hinge, one end of the sub-lower grate panel is connected to the third hinge through a third mounting hole, the other end of the sub-lower grate panel is provided with a second bent portion, one end of the second bent portion is connected to the sub-lower grate panel in a U shape, and the other end of the second bent portion is provided with a fourth mounting hole, and the fourth mounting hole is used to be hinged to the end of the upper grate panel through a fourth hinge.

[0018] Optionally, the sub-lower grate panel is provided with second flanges at both ends along the width direction of the lower grate panel, and the second flanges are connected to the sub-lower grate panel in an L-shape.

[0019] The present invention provides a drainage grate that automatically opens and closes, and its beneficial effects are: the drainage grate is provided with an upper grate panel and a lower grate panel in a grate seat, and a linkage relationship is formed by the hinged connection of the upper and lower grate panels, and the drainage grate is automatically opened and closed by the action of gravity. When it rains, the lower grate panel is folded and bent downward by the gravity of rainwater, thereby improving the rainwater flow capacity. On sunny days, the upper grate panel is unfolded and laid flat in the grate seat under the action of its own gravity, driving the lower grate panel to also unfold to intercept the inside of the grate seat, preventing debris from entering, thereby improving the cleanliness of rainwater and reducing the phenomenon of water accumulation on rainy days.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0022] Figure 1 A schematic structural diagram of an automatically opened and closed drainage grate according to an embodiment of the present invention is shown.

[0023] Figure 2 Shown Figure 1 Sectional view.

[0024] Figure 3 A schematic structural diagram of a sub-upper grate panel according to an embodiment of the present invention is shown.

[0025] Figure 4 Shown Figure 3 main view.

[0026] Figure 5 A schematic structural diagram of a sub-lower grate panel according to an embodiment of the present invention is shown.

[0027] Figure 6 Shown Figure 5 main view.

[0028] Figure 7 A structural schematic diagram of a grate seat according to an embodiment of the present invention is shown.

[0029] Figure 8 A schematic diagram of an open state of an automatically opened and closed drain grate according to an embodiment of the present invention is shown.

[0030] Figure 9 A schematic diagram of a closed state of an automatically opened and closed drain grate according to an embodiment of the present invention is shown.

[0031] Description of reference numerals:

[0032] 1. Grate seat; 2. Sub-upper grate panel; 3. Sub-lower grate panel; 4. Mounting hole; 5. First hinge; 6. First mounting hole; 7. First bend; 8. Second flange; 9. First flange; 10. Third hinge; 11. Third mounting hole; 12. Second bend; 13. Fourth mounting hole. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0034] The present invention provides a drainage grate that automatically opens and closes, comprising:

[0035] A grate seat, wherein the grate seat is a rectangular frame;

[0036] The upper grate panel is arranged in the grate seat. The upper grate panel is a hollow structure. The upper grate panel includes two sub-upper grate panels, and the two sub-upper grate panels are hingedly connected;

[0037] The lower grate panel is arranged below the upper grate panel, and the lower grate panel includes two sub-lower grate panels, which are hingedly connected;

[0038] The two ends of the upper grate panel are hinged to the two ends of the lower grate panel respectively, and the two sub-lower grate panels can be folded downward to drive the two sub-upper grate panels to be folded upward.

[0039] Specifically, the drainage grate is provided with an upper grate panel and a lower grate panel in the grate seat. The two grate panels are arranged up and down and are connected at both ends by a hinge. The upper grate panel is hingedly connected by two sub-upper grate panels, and the two sub-upper grate panels can only be bent and folded upwards, while the lower grate panel is hingedly connected by two sub-lower grate panels, and the two sub-lower grate panels can only be bent and folded downwards. In the case of rain, the gravity of rainwater causes the sub-lower grate panels to bend and fold downwards, and at the same time, the gravity of rainwater is greater than that of the upper grate panel. The gravity of the grate panel drives the upper grate panel to bend and fold, so that the drainage grate automatically opens, the rainwater circulation space in the grate seat is increased, the flow capacity is improved, and water accumulation on roads on rainy days is reduced; on sunny days, the upper grate panel is affected by its own gravity, causing the upper grate panel to unfold and lay on the grate seat, while driving the lower grate panel to unfold as well, so that the drainage grate automatically closes, and the interception capacity in the grate seat is enhanced to prevent debris from entering, thereby improving the cleanliness of the incoming rainwater.

[0040] Optionally, mounting holes are provided on the outer periphery of the grate seat.

[0041] Specifically, the grate seat can be installed on the road surface using anchor bolts through the installation holes, thereby improving the fixing strength.

[0042] Optionally, the outer wall of the upper grate panel is slidably fitted with the inner wall of the grate seat.

[0043] Specifically, the upper grate panel matches the shape of the inner frame of the grate seat, so that when the upper grate panel is unfolded and laid in the grate seat, the upper grate panel and the grate seat remain flush and do not affect the traffic safety above.

[0044] Optionally, an annular support plate is provided on the inner circumference of the grate seat, and an upper grate panel accommodating groove is formed above the support plate, and the upper grate panel can slide on the support plate.

[0045] Specifically, the cross-section of the grate seat is rectangular, and a support plate is provided on the inner periphery of the grate seat. An upper grate panel accommodating groove with a certain height is formed above the support seat, so that the grate seat supports the upper grate panel. The upper grate panel is arranged at the upper end of the grate seat. When the drainage grate is opened or closed, the groove of the grate seat leaves space for the upper grate panel and the lower grate panel to slide; when the drainage grate is closed, the lower grate panel can store a certain amount of debris, which is convenient for cleaning the debris to prevent it from flowing into the sewer pipe and polluting rainwater.

[0046] Specifically, the two sub-upper grate panels are arranged along the length direction of the upper grate panel. Generally, the length direction of the drainage grate is consistent with the direction of road travel. On rainy days, the gravity of rainwater causes the sub-lower grate panel to fold and bend downward, driving the sub-upper grate panel to fold and bend upward. When pedestrians and cars pass over the sub-upper grate panel, they will press the sub-upper grate panel down in time by their own gravity to ensure normal traffic on the ground. When the pedestrians and vehicles leave, the sub-lower grate panel will be affected by gravity to open the drainage grate again, thereby improving drainage capacity.

[0047] Optionally, the two sub-upper grate panels are connected by a first hinge, one end of the sub-upper grate panel is connected to the first hinge through a first mounting hole, the other end of the sub-upper grate panel is provided with a first bent portion, one end of the first bent portion is connected to the sub-upper grate panel in a U shape, and the other end of the first bent portion is provided with a second mounting hole, and the second mounting hole is used to hinge with the end of the lower grate panel through a second hinge.

[0048] Specifically, the two sub-upper grate panels are connected by a first hinge, and the first hinge enables the two sub-upper grate panels to bend and fold upward. The ends of the two sub-upper grate panels that are close to each other are provided with a first mounting groove for connecting the first hinge, and the ends of the two sub-upper grate panels that are away from each other are provided with a first bending portion, and a second mounting hole is provided on the first bending portion. The second mounting hole is used to hinge with the end of the lower grate panel, so that a linkage is formed between the upper grate panel and the lower grate panel, thereby achieving the effect of automatic opening and closing of the drainage grate; the edges and corners of the first bending portion are set to rounded corners, so that when the sub-lower grate panel drives the sub-upper grate panel to fold and open, the rounded corners can make the end of the sub-upper grate panel and the grate seat slide more smoothly, thereby reducing the resistance of the sub-upper grate panel to the upward bending and folding movement.

[0049] Optionally, first flanges are respectively provided at both ends of the sub-upper grate panel along the width direction of the upper grate panel, and the first flanges are connected to the sub-upper grate panel in an L shape.

[0050] Specifically, first flanges are provided at both ends of the sub-upper grate panel in the width direction, and the first flanges are perpendicular to the sub-upper grate panel. When the sub-upper grate panel is unfolded and laid in the grate seat, the first flanges intercept debris entering from the width direction of the upper grate panel.

[0051] Optionally, both ends of the lower grate panel match the inner wall of the grate seat.

[0052] Specifically, the length of the lower grate panel matches the length of the inner wall of the grate seat. When the upper grate panel and the lower grate panel are unfolded and laid in the grate seat, the ends of the upper grate panel and the lower grate panel can be connected through hinges, and the upper grate panel and the lower grate panel can move synchronously. When it rains, the upper grate panel opens when the lower grate panel opens. When it is sunny, the lower grate panel closes when the upper grate panel is unfolded and closed. The two grate panels are synchronously linked, which can improve the drainage capacity and debris interception capacity.

[0053] Optionally, there is a gap between the two ends of the sub-lower grate panel along the width direction of the lower grate panel and the support plate.

[0054] Specifically, the lower grate panel is connected by two sub-grate panels. The distance between the sub-lower grate panels along the width direction of the lower grate panel is smaller than the inner wall width of the grate seat. When the sub-lower grate panel is bent and folded downward, the notch of the grate seat will not affect the movement of the sub-grate panel.

[0055] Optionally, the two sub-lower grate panels are connected by a third hinge, one end of the sub-lower grate panel is connected to the third hinge through a third mounting hole, the other end of the sub-lower grate panel is provided with a second bent portion, one end of the second bent portion is connected to the sub-lower grate panel in a U shape, and the other end of the second bent portion is provided with a fourth mounting hole, and the fourth mounting hole is used to be hinged to the end of the upper grate panel through a fourth hinge.

[0056] Specifically, the two sub-lower grate panels are connected by a third hinge, and the third hinge can make the two sub-lower grate panels bend and fold downward. The ends of the two sub-lower grate panels that are close to each other are provided with a third mounting hole for connecting the third hinge, and the ends of the two sub-lower grate panels that are away from each other are provided with a second bent portion, and a fourth mounting hole is provided on the second bent portion. The fourth mounting hole is used to be hinged with the end of the upper grate panel, so that a linkage is formed between the upper grate panel and the lower grate panel, thereby realizing the effect of automatic opening and closing of the drainage grate; similarly, the edges and corners of the second bent portion are also set to rounded corners, which can also reduce the resistance of the lower grate panel to the downward bending and folding movement.

[0057] Optionally, second flanges are respectively provided at both ends of the sub-lower grate panel along the width direction of the lower grate panel, and the second flanges are connected to the sub-lower grate panel in an L shape.

[0058] Specifically, second flanges are provided at both ends of the sub-lower grate panel in the width direction, and the second flanges are perpendicular to the sub-lower grate panel. When the sub-lower grate panel is pulled by the upper grate panel and spread out in the grate seat, the second flanges intercept debris entering from the width direction of the grate seat.

[0059] Example

[0060] like Figures 1 to 9 As shown, the present invention provides a drainage grate that automatically opens and closes, comprising:

[0061] The grate seat 1 is a rectangular frame;

[0062] The upper grate panel is arranged in the grate seat 1. The upper grate panel is a hollow structure. The upper grate panel includes two sub-upper grate panels 2. The two sub-upper grate panels 2 are hingedly connected;

[0063] The lower grate panel is arranged below the upper grate panel. The lower grate panel includes two sub-lower grate panels 3, and the two sub-lower grate panels 3 are hingedly connected;

[0064] The two ends of the upper grate panel are hinged to the two ends of the lower grate panel respectively, and the two sub-lower grate panels 3 folding downward can drive the two sub-upper grate panels 2 to fold upward.

[0065] In this embodiment, a mounting hole 4 is provided on the outer periphery of the grate seat 1 .

[0066] In this embodiment, the outer wall of the upper grate panel is slidably fitted with the inner wall of the grate seat 1 .

[0067] In this embodiment, an annular support plate is provided on the inner circumference of the grate seat 1 , an upper grate panel receiving groove is formed above the support plate, and the sub-upper grate panel 2 can slide on the support plate.

[0068] In this embodiment, the two sub-upper grate panels 2 are connected by a first hinge 5, one end of the sub-upper grate panel 2 is connected to the first hinge 5 through a first mounting hole 6, and the other end of the sub-upper grate panel 2 is provided with a first bent portion 7, one end of the first bent portion 7 is connected to the sub-upper grate panel 2 in a U shape, and the other end of the first bent portion 7 is provided with a second mounting hole, which is used to be hinged to the end of the lower grate panel through a second hinge.

[0069] In this embodiment, first flanges 9 are respectively provided at both ends of the sub-upper grate panel 2 along the width direction of the upper grate panel. The first flanges 9 are connected to the sub-upper grate panel 2 in an L shape.

[0070] In this embodiment, both ends of the lower grate panel match the inner wall of the grate seat 1 .

[0071] In this embodiment, there is a gap between the two ends of the sub-lower grate panel 3 along the width direction of the lower grate panel and the support plate.

[0072] In this embodiment, the two sub-lower grate panels 3 are connected by a third hinge 10, one end of the sub-lower grate panel 3 is connected to the third hinge 10 through a third mounting hole 11, and the other end of the sub-lower grate panel 3 is provided with a second bent portion 12, one end of the second bent portion 12 is connected to the sub-lower grate panel in a U shape, and the other end of the second bent portion 12 is provided with a fourth mounting hole 13, and the fourth mounting hole 13 is used to be hinged to the end of the upper grate panel through a fourth hinge.

[0073] In this embodiment, second flanges 8 are respectively provided at both ends of the sub-lower grate panel 3 along the width direction of the lower grate panel. The second flanges 8 are connected to the sub-lower grate panel 3 in an L-shape.

[0074] In summary, when it rains, the drainage grate enters the groove formed by the sub-lower grate panel 3 through the water outlet of the sub-upper grate panel 2. When there is too much rain, its weight increases, and the gravity of the rainwater causes the quadrilateral to become unstable. The two sub-lower grate panels 3 rotate a certain angle around the hinges and the third hinge 10 at both ends of the lower grate panel, bend downward at a certain angle, and at the same time pull the two sub-upper grate panels 2 to bend upward at the same angle, thereby realizing the opening of the water grate. At this time, the two sub-upper grate panels 2 are tilted, and their strip-shaped water outlets are not easily blocked by garbage and leaves, and the openings formed on the sides of the sub-upper grate panels 2 can also pass water, thereby increasing the water grate. When the drainage grate is in the open state, if the wheels of pedestrians or vehicles press on the upper grate panel 2, the gravity increases and can flatten the upper grate panel 2 until its bent side is pressed on the notch of the grate seat 1, and the two upper grate panels 2 are straight and can bear the load; when pedestrians or vehicles leave the drainage grate, the gravity of the rainwater opens the drainage grate again; when the rainfall stops, the accumulated water in the drain outlet flows away, and the accumulated water on the lower grate panel 3 flows away, which cannot make the lower grate panel 3 open, and the upper grate panel 2 returns to a flat state under the action of its own gravity. In this way, the automatic opening and closing of the drainage grate is realized through the quadrilateral mechanism.

[0075] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A drainage grate that opens and closes automatically, characterized in that: include: A grate seat, wherein the grate seat is a rectangular frame; An upper grate panel is arranged in the grate seat, the upper grate panel is a hollow structure, and the upper grate panel includes two sub-upper grate panels, and the two sub-upper grate panels are hingedly connected; A lower grate panel is provided below the upper grate panel, the lower grate panel comprising two sub-lower grate panels, and the two sub-lower grate panels are hingedly connected; The two ends of the upper grate panel are respectively hinged to the two ends of the lower grate panel, and the two sub-lower grate panels can be folded downward to drive the two sub-upper grate panels to be folded upward; The two sub-upper grate panels are connected by a first hinge, one end of the sub-upper grate panel is connected to the first hinge through a first mounting hole, the other end of the sub-upper grate panel is provided with a first bent portion, one end of the first bent portion is connected to the sub-upper grate panel in a U shape, the other end of the first bent portion is provided with a second mounting hole, and the second mounting hole is used to be hinged to the end of the lower grate panel through a second hinge; The two sub-lower grate panels are connected by a third hinge, one end of the sub-lower grate panel is connected to the third hinge through a third mounting hole, the other end of the sub-lower grate panel is provided with a second bent portion, one end of the second bent portion is connected to the sub-lower grate panel in a U shape, and the other end of the second bent portion is provided with a fourth mounting hole, and the fourth mounting hole is used to be hinged to the end of the upper grate panel through a fourth hinge.

2. The automatically opened and closed drain grate according to claim 1, characterized in that: The outer periphery of the grate seat is provided with mounting holes.

3. The automatically opened and closed drain grate according to claim 1, characterized in that: The outer wall of the upper grate panel is slidably matched with the inner wall of the grate seat.

4. The automatically opened and closed drain grate according to claim 1, characterized in that: An annular support plate is provided on the inner circumference of the grate seat, an upper grate panel receiving groove is formed above the support plate, and the sub-upper grate panel can slide on the support plate.

5. The automatically opened and closed drain grate according to claim 1, characterized in that: The sub-upper grate panel is provided with first flanges at both ends along the width direction of the upper grate panel, and the first flanges are connected to the sub-upper grate panel in an L shape.

6. The automatically opened and closed drain grate according to claim 1, characterized in that: The two ends of the lower grate panel match the inner wall of the grate seat.

7. The automatically opened and closed drain grate according to claim 4, characterized in that: There is a gap between the two ends of the sub-lower grate panel along the width direction of the lower grate panel and the support plate.

8. The automatically opened and closed drain grate according to claim 1, characterized in that: The sub-lower grate panel is provided with second flanges at both ends along the width direction of the lower grate panel, and the second flanges are connected to the sub-lower grate panel in an L shape.

Images