A rainwater grate capable of conveniently clearing silt
By designing a rainwater grate with a three-layer filter structure, including a frame-shaped second filter layer, an embedded first filter layer and a boxed third filter layer, the problem of insufficient filtration capacity of the double-layer filter type rainwater grate is solved, and more efficient debris filtration and convenient dredging process are achieved.
Patent Information
- Application Number
- CN202421449923.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The double-layer filtering rainwater grate has a general filtration capacity, which can easily cause blockage and accumulation of rainwater grate.
A rainwater grate including a frame-shaped second filter layer, a first filter layer embedded on the top of the second filter layer, and a boxed third filter layer mounted on the bottom of the second filter layer is designed. Each filter layer is equipped with filter holes, and the centralized retention and convenient cleaning of debris are achieved through the retention groove and extension section.
The three-layer filter structure significantly improves the filtration efficiency of debris, reduces blockage and accumulation, and improves the dredging efficiency.
Smart Images
Figure CN222701156U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rainwater grates, in particular to a rainwater grate which can be used for convenient silt removal. Background Art
[0002] The rainwater grates currently used in rainwater systems are divided into primary filtration type rainwater grates and secondary filtration type rainwater grates. The filter layer of the primary filtration type rainwater grate is the rainwater grate itself, which filters the debris in the surface runoff at the ground level. Once the debris passes through the rainwater grate, it will form a blockage in the rainwater well or open ditch. 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 to be achieved, the water passing capacity will be significantly reduced. When debris, dead branches and leaves pass through the rainwater grate, blockage and accumulation will occur, but the dredging efficiency of the primary filtration type rainwater grate and the secondary filtration type rainwater grate is relatively low. Summary of the invention
[0003] The technical problem to be solved by the utility model is that the filtering ability of the double-layer filtering rainwater grate is general, which easily causes the clogging and accumulation of the rainwater grate.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a rainwater grate that can be conveniently desilted, including a frame-shaped second filter layer, a first filter layer embedded in the top of the second filter layer and a boxed third filter layer installed at the bottom of the second filter layer, the first filter layer, the second filter layer and the third filter layer are all provided with filter holes, a frame-shaped extension section is provided on the inner side of the second filter layer, a gap is provided between the extension section and the inner side wall of the second filter layer, an overlap section is provided on the top edge of the third filter layer, and a rectangular frame supporting the overlap section is provided on the inner side of the extension section.
[0005] Preferably, a first retention groove is provided between the outer side of the second filter layer and the extension section, and second vertical filter holes are equidistantly provided on the first retention groove.
[0006] Preferably, second horizontal filtering holes are equidistantly provided on the extension section.
[0007] Preferably, a strip-shaped inner filter hole is provided in the middle of the first filter layer, an outer filter hole is provided at the edge of the first filter layer, and the outer filter holes and the inner filter holes are arranged at equal distances on the first filter layer.
[0008] Preferably, an upwardly protruding arc structure is provided in the middle of the bottom of the third filter layer, a second retention groove is provided between the arc structure and the inner wall of the third filter layer, and the filter holes are provided on the second retention groove and the arc structure.
[0009] Preferably, the arc-shaped structure is provided with strip-shaped arc-shaped filtering holes.
[0010] Preferably, the third filter layer is in a prism shape, and the top area is larger than the bottom area, and third vertical filter holes are evenly spaced on the side walls of the third filter layer.
[0011] Preferably, the size of the edge of the overlapping section is the same as the outer size of the rectangular frame.
[0012] The utility model provides a portable rainwater grate for silting, which is provided with three filter layers and can improve the filtering efficiency of debris. The second filter layer and the third filter layer are respectively provided with retention grooves, and the debris passing through can be concentratedly retained, reducing the influence of distributed retention on reducing the flow capacity. After the first filter layer is moved, the debris in the retention groove of the second filter layer can be cleaned. The second filter layer and the third filter layer are connected by extension, and the third filter layer can be conveniently taken out to clean the debris in the retention groove, thereby improving the silting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0014] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.
[0015] Figure 2 It is a top view of the first filter layer in the embodiment of the utility model.
[0016] Figure 3 is a top view of the second filter layer in the embodiment of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the second filter layer in the embodiment of the utility model;
[0018] Figure 5 is a top view of the third filter layer in the embodiment of the utility model;
[0019] Figure 6 It is a structural schematic diagram of the third filter layer in the embodiment of the utility model.
[0020] In the figure: 1, first filter layer; 11, outer filter hole; 12, inner filter hole; 2, second filter layer; 21, second vertical filter hole; 22, second horizontal filter hole; 23, first retention groove; 24, extension section; 3, third filter layer; 31, third vertical filter hole; 32, arc filter hole; 33, retention groove; 34, overlap section. DETAILED DESCRIPTION
[0021] like Figure 1-6 The utility model provides a rainwater grate that can be conveniently desilted, comprising a frame-shaped second filter layer 2, a first filter layer 1 embedded on the top of the second filter layer 2, and a boxed third filter layer 3 installed on the bottom of the second filter layer 2, the first filter layer 1, the second filter layer 2 and the third filter layer 3 are all provided with filter holes, a frame-shaped extension section 24 is provided inside the second filter layer 2, a gap is provided between the extension section 24 and the inner side wall of the second filter layer 2, an overlap section 34 is provided on the top edge of the third filter layer 3, and a rectangular frame supporting the overlap section 34 is provided inside the extension section 24.
[0022] When the surface runoff is small, the first filter layer 1 works first, and the runoff is filtered for the first time through the outer filter holes 11. 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 starts to work. The second filter layer 2 performs secondary filtration through the second vertical filter holes 21 and the second horizontal filter holes 22, and the debris is retained by the first retention groove 23. When the debris passing through the second horizontal filter hole 22 enters the third filter layer, the third filter layer starts to work, and the debris is filtered for the third time through the third vertical filter hole 31, and the debris is retained by the second retention groove 33.
[0023] When the runoff is large, the filtering effect of the surface runoff through the outer filter holes 11 is the same as when the runoff is small, and the runoff through the inner filter holes 12 undergoes the first filtration. When part of the debris in the runoff passes through the first filter layer 1 and reaches the third filter layer 3, the second filtration occurs, and the debris in the runoff is filtered through the third vertical filter holes 31 and the arc filter holes 32, and is retained by the second retention groove 33.
[0024] When desilting debris, the first filter layer 1 can be directly moved to clean the debris in the first retention tank 23; when desilting debris in the second retention tank 33 of the third filter layer 3, it is only necessary to lift the third filter layer 3, and the third filter layer 3 and the second filter layer 2 are overlapped by the extension section 24 and the overlap section 34.
[0025] like Figure 3As shown. A first retention groove 23 is provided between the outer side of the second filter layer 2 and the extension section 24, and second vertical filter holes 21 are equidistantly provided on the first retention groove 23. In order to prevent debris from entering the rainwater grate and clogging the filter holes in the rainwater grate, the first retention groove 23 is provided to temporarily store some debris and facilitate the collection of debris later.
[0026] like Figure 3 The extension section 24 is provided with second horizontal filter holes 22 at equal intervals. The second horizontal filter holes 22 can enhance the filtering capacity of the second filter layer 2.
[0027] like Figure 1 As shown, in order to ensure the filtering capacity of the first filter layer 1. The first filter layer 1 is provided with a strip-shaped inner filter hole 12 in the middle, and the outer filter hole 11 is provided at the edge of the first filter layer 1. The outer filter holes 11 and the inner filter holes 12 are arranged equidistantly on the first filter layer 1. The inner filter holes 12 are strip-shaped filter holes, and the outer filter holes 11 are circular filter holes. The outer filter holes 11 are distributed at the edge of the first filter layer 1, and the inner filter holes 12 are arranged in parallel and equidistantly in the middle of the first filter layer 1, and two rows are provided.
[0028] like Figure 6 As shown. An arc-shaped structure protruding upward is provided in the middle of the bottom of the third filter layer 3, and a second retention groove 33 is provided between the arc-shaped structure and the inner side wall of the third filter layer 3, and the filter holes are provided on the second retention groove 33 and the arc-shaped structure. The arc-shaped structure is used to protrude the bottom of the third filter layer 3 upward, thereby forming the second retention groove 33. The debris entering the third filter layer 3 is preferentially collected in the second retention groove 33 under flushing, and the debris can be easily removed from the third filter layer 3 during subsequent cleaning; and the debris is collected in the second retention groove 33, and the filter holes on the third filter layer 3 will not be blocked by the debris.
[0029] like Figure 6 As shown, in order to enhance the filtering ability of the arc structure, the arc structure is provided with strip-shaped arc filtering holes 32.
[0030] like Figure 1 and Figure 6 The third filter layer 3 is in a prism shape, and the top area is larger than the bottom area. The side walls of the third filter layer 3 are evenly spaced with third vertical filter holes 31. By setting the third filter layer 3 in a prism shape, it is convenient for the staff to take and place the third filter layer 3 from the second filter layer 2.
[0031] like Figure 3 , Figure 4 and Figure 6The size of the edge of the overlap section 34 is the same as the edge size of the bottom rectangular box in the extension section 24. When the third filter layer 3 is placed, the third filter layer 3 is placed in the extension section 24, the overlap section 34 of the third filter layer 3 contacts the inner wall of the extension section 24, and the overlap section 34 is supported by the rectangular box inside the extension section 24, so as to achieve stable support for the third filter layer 3.
Claims
1. A rainwater grate that can be used for convenient silt removal, characterized in that: The invention comprises a frame-shaped second filter layer (2), a first filter layer (1) embedded in the top of the second filter layer (2), and a box-shaped third filter layer (3) installed at the bottom of the second filter layer (2); the first filter layer (1), the second filter layer (2) and the third filter layer (3) are all provided with filter holes; a frame-shaped extension section (24) is provided on the inner side of the second filter layer (2); a gap is provided between the extension section (24) and the inner side wall of the second filter layer (2); an overlap section (34) is provided on the top edge of the third filter layer (3); and a rectangular frame supporting the overlap section (34) is provided on the inner side of the extension section (24).
2. A rainwater grate capable of conveniently clearing silt as claimed in claim 1, characterized in that: A first retention groove (23) is provided between the outer side of the second filter layer (2) and the extension section (24), and second vertical filter holes (21) are provided at equal intervals on the first retention groove (23).
3. A rainwater grate capable of conveniently clearing silt as claimed in claim 2, characterized in that: The extension section (24) is provided with second horizontal filtering holes (22) at equal intervals.
4. A rainwater grate capable of convenient silting as claimed in claim 1, characterized in that: The first filter layer (1) is provided with strip-shaped inner filter holes (12) in the middle, and the first filter layer (1) is provided with outer filter holes (11) at the edge, and the outer filter holes (11) and the inner filter holes (12) are arranged at equal distances on the first filter layer (1).
5. A rainwater grate capable of conveniently clearing silt as claimed in claim 1, characterized in that: An upwardly protruding arc structure is provided in the middle of the bottom of the third filter layer (3), a second retention groove (33) is provided between the arc structure and the inner side wall of the third filter layer (3), and the second retention groove (33) and the arc structure are both provided with the filtering holes.
6. A rainwater grate capable of conveniently clearing silt as claimed in claim 5, characterized in that: The arc-shaped structure is provided with strip-shaped arc-shaped filtering holes (32).
7. A rainwater grate capable of conveniently clearing silt as claimed in claim 5, characterized in that: The third filter layer (3) is in the shape of a prism, with a top area larger than a bottom area, and third vertical filter holes (31) are evenly spaced on the side walls of the third filter layer (3).
8. A rainwater grate capable of conveniently clearing silt as claimed in claim 1, characterized in that: The size of the edge of the overlapping section (34) is the same as the outer size of the rectangular frame.