Novel anti-blocking rainwater grate

Abstract

The utility model provides a novel anti-blocking rainwater grate which is integrally of a box structure and comprises a first filter layer, a second filter layer and a transition connecting frame connecting the first filter layer and the second filter layer, and filter holes are formed in the first filter layer and the second filter layer. The second filter layer comprises a bottom wall and an inclined side wall obliquely connected to the bottom wall, the inclined side wall is connected with the transition connecting frame, and filter holes are formed in the inclined side wall and the bottom wall. The effects of maintaining the rainwater filtering capacity and meanwhile maintaining the high water passing stability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater grates, in particular to a novel anti-clogging rainwater grate. Background Art

[0002] The separation of urban rainwater and sewage is an important part of the Yangtze River protection work. The process involves the construction of a large number of rainwater wells and rainwater ditches. The quality and efficiency of rainwater grate anti-clogging affects the service life of the entire rainwater system after it is put into normal use.

[0003] At present, the rainwater grates used in rainwater systems are divided into primary filtration type rainwater grates and secondary filtration type rainwater grates.

[0004] The filtration layer of the primary filtration type rainwater grate is the rainwater grate itself, which filters the debris in the surface runoff at the ground layer. Once the debris passes through the rainwater grate, it will form a blockage in the rainwater well or open ditch.

[0005] Compared with the primary filtration type rainwater grate, the secondary filtration type rainwater grate has an additional filter layer, which is installed under the rainwater grate. After the debris in the surface runoff passes through the first filter layer, the second filter layer will filter the debris again. However, the second filter layer is usually a simple filter net and is close to the first filter layer. When the second filter net filters a certain amount of debris, even if the filtering effect can continue, the water passing capacity will be significantly reduced. Summary of the invention

[0006] The technical problem to be solved by the utility model is that the water passing capacity of the existing rainwater grate will be continuously weakened during long-term use.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a new anti-clogging rainwater grate, the grate as a whole is a box structure, including a first filter layer, a second filter layer and a transition connection frame connecting the first filter layer and the second filter layer, the first filter layer and the second filter layer are both provided with filter holes, the second filter layer includes a bottom wall and an inclined side wall obliquely connected to the bottom wall, the inclined side wall is connected to the transition connection frame, and the inclined side wall and the bottom wall are both provided with filter holes.

[0008] Preferably, the first filter layer is lined in the transition connection frame, the transition connection frame is a rectangular frame structure, and the first filter layer is provided with strip-shaped first filter holes at equal intervals.

[0009] Preferably, a nut step is provided in the transition connection frame, and a through hole corresponding to the nut step is opened on the first filter layer.

[0010] Preferably, the filter holes on the inclined side wall of the second filter layer are arranged vertically and are distributed equidistantly.

[0011] Preferably, the oblique side walls at opposite ends of the second filter layer are mirror-symmetrical along the second filter layer, and the filter holes on the opposite oblique side walls are symmetrically arranged.

[0012] Preferably, the width of the filter holes on the first filter layer is greater than the width of the filter holes on the second filter layer.

[0013] Preferably, the bottom wall of the second filter layer and the inner side of the connecting section of the inclined side wall are provided with chamfers.

[0014] 1. The utility model provides a novel anti-clogging rainwater grate, which is provided with a first filter layer and a second filter layer. The first filter layer and the second filter layer filter rainwater twice. The filter holes on the first filter layer filter the debris in the surface runoff for the first time, and the filter holes on the bottom wall of the second filter layer filter the debris for the second time. When the debris causes the filter holes on the bottom wall to be blocked, the filter holes on the inclined side wall filter the debris for the second time to prevent the debris from directly entering the rainwater well and the rainwater ditch to cause blockage.

[0015] 2. The first filter layer and the second filter layer are connected by a transition connection frame. The transition connection section serves as a transition part, which ensures the water passing capacity and buffer time of the rainwater grate when the bottom filter layer is blocked to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0018] Figure 2 It is the front view of the embodiment of the utility model.

[0019] Figure 3 It is a top view of the first filter layer of an embodiment of the utility model.

[0020] Figure 4 It is a schematic diagram of the structure of the second filter layer in an embodiment of the utility model.

[0021] Figure 5 It is a top view of the second filter layer of the embodiment of the utility model.

[0022] In the figure: 1, first filter layer; 11, first filter hole; 2, second filter layer; 21, bottom filter layer; 22, four-wall filter layer; 23, bottom filter hole; 24, four-wall filter hole; 3, transition connection frame. DETAILED DESCRIPTION

[0023] like Figure 1-5The utility model provides a novel anti-clogging rainwater grate, the grate is in a box structure as a whole, including a first filter layer 1, a second filter layer 2 and a transition connection frame 3 connecting the first filter layer 1 and the second filter layer 2, the first filter layer 1 and the second filter layer 2 are both provided with filter holes, the second filter layer 2 includes a bottom wall and an inclined side wall obliquely connected to the bottom wall, the inclined side wall is connected to the transition connection frame 3, and the inclined side wall and the bottom wall are both provided with filter holes.

[0024] The first filter layer 1 has first filter holes 11, which are divided into two rows and are all in the shape of long strips. The second filter layer 2 is divided into a bottom filter layer 21 and a four-wall filter layer 22. The bottom filter layer 21 is a bottom wall and bottom filter holes 23 formed on the bottom wall. The four-wall filter layer 22 includes an oblique side wall and four-wall filter holes 24 formed on the oblique side wall.

[0025] When part of the debris in the surface runoff passes through the first filter layer 1 and reaches the second filter layer 2, the second filter layer 2 starts to work. When the second filter layer 2 starts to filter the debris or filters less debris, the bottom filter layer 21 plays a major role, and the runoff flows into the rainwater well or rainwater ditch through the bottom filter holes 23, and the debris is filtered and directly flows in the bottom filter layer 21. When the bottom filter layer 21 filters more debris, the water passing capacity of the bottom filter holes 23 is weakened, and the surface runoff is greater than the water passing capacity, the four-wall filter layer 22 starts to play a major role. The runoff flows into the rainwater well or rainwater ditch through the four-wall filter holes 24, and the debris is filtered and retained in the second filter layer 2.

[0026] like Figure 1 As shown. The first filter layer 1 is lined in the transition connection frame 3, and the transition connection frame 3 is a rectangular frame structure. The first filter layer 1 is provided with strip-shaped first filter holes 11 at equal intervals. The second filter layer 2 and the transition connection frame 3 are an integrated structure, and the first filter layer 1 is detachably installed in the transition connection frame 3. The staff regularly removes the first filter layer 1 and cleans the inside of the transition connection frame 3.

[0027] As a preferred embodiment of the present utility model, in order to facilitate the removal of the first filter layer 1, a nut step is arranged in the transition connection frame 3, and a through hole corresponding to the nut step is opened on the first filter layer 1.

[0028] like Figure 4 and Figure 5 As shown, after some debris is blocked in the second filter layer 2, in order to ensure that the four filter holes 24 on the oblique side wall maintain normal water flow capacity, the filter holes on the oblique side wall of the second filter layer 2 are arranged vertically and are evenly spaced.

[0029] like Figure 5As shown, the rainwater grate maintains high stability to ensure the same water passing capacity around the second filter layer 2. The oblique side walls at opposite ends of the second filter layer 2 are mirror-symmetrical along the second filter layer 2, and the filter holes on the opposite oblique side walls are symmetrically arranged.

[0030] As a preferred embodiment of the present invention, in order to achieve gradient debris filtration and avoid clogging of the first filter layer 1 , the width of the filter holes on the first filter layer 1 is greater than the width of the filter holes on the second filter layer 2 .

[0031] As a preferred embodiment of the utility model, in order to facilitate the staff to clean the second filter layer 2, a chamfer is provided on the inner side of the connecting section between the bottom wall and the inclined side wall of the second filter layer 2. The connecting section between the bottom wall and the inclined side wall has an arc-shaped transition, so that when cleaning the inside of the second filter layer 2, the internal debris can be removed more smoothly.

Claims

1. A new type of anti-clogging rainwater grate, characterized by: The grate is in a box structure as a whole, comprising a first filter layer (1), a second filter layer (2) and a transition connection frame (3) connecting the first filter layer (1) and the second filter layer (2); filter holes are provided on the first filter layer (1) and the second filter layer (2); the second filter layer (2) comprises a bottom wall and an inclined side wall obliquely connected to the bottom wall; the inclined side wall is connected to the transition connection frame (3); and the inclined side wall and the bottom wall are both provided with filter holes.

2. A novel anti-clogging rainwater grate as claimed in claim 1, characterized in that: The first filter layer (1) is lined in the transition connection frame (3), the transition connection frame (3) is a rectangular frame structure, and the first filter layer (1) is provided with strip-shaped first filter holes (11) at equal intervals.

3. A novel anti-clogging rainwater grate as claimed in claim 2, characterized in that: A nut step is provided in the transition connection frame (3), and a through hole corresponding to the nut step is provided on the first filter layer (1).

4. A novel anti-clogging rainwater grate as claimed in claim 1, characterized in that: The filter holes on the oblique side wall of the second filter layer (2) are arranged vertically, and the filter holes are distributed equidistantly.

5. A novel anti-clogging rainwater grate as claimed in claim 4, characterized in that: The oblique side walls at opposite ends of the second filter layer (2) are mirror-symmetrical along the second filter layer (2), and the filter holes on the opposite oblique side walls are symmetrically arranged.

6. A novel anti-clogging rainwater grate as claimed in claim 1, characterized in that: The width of the filter holes on the first filter layer (1) is greater than the width of the filter holes on the second filter layer (2).

7. A novel anti-clogging rainwater grate as claimed in claim 1, characterized in that: The bottom wall of the second filter layer (2) and the inner side of the connecting section of the inclined side wall are provided with chamfers.

Images