A connection and fixing structure for rainwater grate

Abstract

The utility model discloses a connection and fixing structure of a rainwater grate, and relates to the technical field of rainwater grates, including a road surface, a drainage ditch is arranged on the road surface, a supporting annular block is fixedly installed in the drainage ditch, a lower grate is placed on the upper end of the supporting annular block, a filter is placed above the lower grate, and an upper grate is placed above the filter. The utility model fixes the filter between the upper grate and the lower grate through a plurality of sets of fastening bolts, thereby increasing the anti-theft effect, and when in use, rainwater first flows through the trapezoidal area formed by the first mounting portion and the outer inclined surface of the upper grate, the rainwater first enters through the first annular groove, is filtered by the filter, and then is discharged through the vertical groove and the second annular groove, thereby increasing the filtering area and filtering effect, and when the trapezoidal area is blocked, the rainwater is directly discharged downward through the horizontal groove, and the arrangement of the horizontal groove and the vertical groove can further prevent more debris from entering the interior of the drainage ditch.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater grates, in particular to a connection and fixing structure of rainwater grates. Background Art

[0002] At present, with the continuous expansion of urban scale in my country, the land use type has changed greatly, the proportion of impervious pavement has gradually increased, the surface runoff coefficient has increased significantly, and the urban rainfall runoff has increased sharply. Urban non-point source pollution caused by rainwater runoff scouring roads during rainfall has become one of the main reasons for the deterioration of urban water quality, especially in mountainous cities, where the road slope is large and is strongly scoured by surface runoff. Urban roads have a large traffic load and occupy a large area. The intensity of non-point source pollution they produce is greater than that of impervious underlying surfaces such as roofs and squares. The scouring of roads by initial rainfall runoff contains most of the road pollutants, which will cause more serious environmental pollution when entering the water body, while the mid- and late-stage rainwater is relatively clean. If the initial runoff can be effectively separated from the mid- and late-stage runoff, and the initial rainwater is treated with emphasis, the environmental pollution caused by road non-point source pollution can be effectively reduced.

[0003] The existing Chinese utility model patent with application number CN202022737402.3 discloses a rainwater grate for municipal engineering, including a frame, a grate and a filter cover; the grate is located on the inner side of the frame, and one end of the grate is rotatably connected to the inner side of the frame through a rotating shaft; the filter cover is located in the frame below the grate, and the filter cover includes a rectangular frame, a filter screen and a connecting rod, the connecting rod is installed on the inner side of the rectangular frame, and the filter screen is installed at the bottom of the rectangular frame. The above scheme prevents weeds and branches from entering the drainage ditch through the grate by setting a filter cover, but since the filter screen is directly placed on the frame, it is easy to be stolen, affecting the filtering function of the rainwater grate. Utility Model Content

[0004] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a connection and fixing structure of a rain grate.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a connection and fixing structure of a rainwater grate, comprising a road surface, a drainage groove is arranged on the road surface, a supporting annular block is fixedly installed in the drainage groove, a lower grate is placed on the upper end of the supporting annular block, a filter is placed above the lower grate, an upper grate is placed above the filter, the lower grate, the filter and the upper grate are fixedly installed by fastening bolts, and the lower part of the fastening bolts is detachably installed on the supporting annular block by threads.

[0006] Furthermore, a first mounting portion is provided on the outermost side of the upper grate, and a plurality of groups of first through holes are provided on the first mounting portion.

[0007] Furthermore, a second mounting portion is provided on the outermost side of the lower grate, and a plurality of groups of second through holes are provided on the second mounting portion.

[0008] Furthermore, the first through hole is matched with the second through hole and a filter screen is sandwiched therebetween. The lower grate, the filter screen and the upper grate are fixedly installed above the supporting annular block by fastening bolts.

[0009] Furthermore, a transverse groove is arranged at the top of the upper grate, and a first annular groove is arranged on the outer inclined surface of the upper grate.

[0010] Furthermore, a vertical groove is arranged at the top of the lower grate, and a second annular groove is arranged on the outer inclined surface of the lower grate.

[0011] The beneficial effects of the utility model are as follows: the filter screen is fixedly installed between the upper grate and the lower grate by a plurality of sets of fastening bolts, thereby increasing the anti-theft effect, and when in use, rainwater first flows through the trapezoidal area formed by the first mounting portion and the outer inclined surface of the upper grate, the rainwater first enters through the first annular groove, is filtered by the filter screen, and then is discharged through the vertical groove and the second annular groove, thereby increasing the filtering area and filtering effect, and when the trapezoidal area is blocked, the rainwater is directly discharged downward through the horizontal groove, and the arrangement of the horizontal groove and the vertical groove can further prevent more debris from entering the interior of the drainage ditch. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a front cross-sectional view of the utility model;

[0014] Figure 2 It is a cross-sectional view of the upper grate of the utility model;

[0015] Figure 3 It is a top view of the upper grate of the utility model;

[0016] Figure 4 It is a bottom view of the lower grate of the utility model.

[0017] In the figure: 1. road surface, 11. drainage ditch, 2. upper grate, 21. transverse groove, 22. first annular groove, 23. first mounting portion, 231. first through hole, 3. filter, 4. lower grate, 41. vertical groove, 42. second annular groove, 43. second mounting portion, 431. second through hole, 5. fastening bolts, 6. supporting annular block. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0019] like Figures 1 to 4 As shown, the utility model includes a pavement 1, on which a drainage groove 11 is provided, in which a support annular block 6 is fixedly installed by bolts, a lower grate 4 is placed on the upper end of the support annular block 6, a filter screen 3 is placed above the lower grate 4, an upper grate 2 is placed above the filter screen 3, a first mounting portion 23 is provided on the outermost side of the upper grate 2, a plurality of groups of first through holes 231 are provided on the first mounting portion 23, a second mounting portion 43 is provided on the outermost side of the lower grate 4, a plurality of groups of second through holes 431 are provided on the second mounting portion 43, the first through holes 231 correspond to and cooperate with the second through holes 431 and the filter screen 3 is sandwiched in between, and the lower grate 4, the filter screen 3 and the upper grate 2 are fixedly installed on the upper side of the support annular block 6 by tightening bolts 5.

[0020] like Figures 1 to 4 As shown, the upper grate 2 is provided with a transverse groove 21 at the top, the outer inclined surface of the upper grate 2 is provided with a first annular groove 22, the lower grate 4 is provided with a vertical groove 41 at the top, and the outer inclined surface of the lower grate 4 is provided with a second annular groove 42.

[0021] When the utility model is in use, the filter screen 3 is fixedly installed between the upper grate 2 and the lower grate 4 by a plurality of sets of fastening bolts 5, thereby increasing the anti-theft effect. When in use, rainwater first flows through the trapezoidal area formed by the first mounting portion 23 and the outer inclined surface of the upper grate 2, and the rainwater first enters through the first annular groove 22, is filtered by the filter screen 3, and is then discharged through the vertical groove 41 and the second annular groove 42, thereby increasing the filtering area and the filtering effect. When the trapezoidal area is blocked, the rainwater is directly discharged downward through the transverse groove 21, and the arrangement of the transverse groove 21 and the vertical groove 41 can further prevent more debris from entering the interior of the drainage ditch 11.

[0022] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A rainwater grate connection and fixing structure, comprising a road surface (1), characterized in that: The pavement (1) is provided with a drainage groove (11), a supporting annular block (6) is fixedly installed in the drainage groove (11), a lower grate (4) is placed on the upper end of the supporting annular block (6), a filter screen (3) is placed above the lower grate (4), an upper grate (2) is placed above the filter screen (3), the lower grate (4), the filter screen (3) and the upper grate (2) are fixedly installed by fastening bolts (5), and the lower part of the fastening bolts (5) is detachably installed on the supporting annular block (6) by means of threads.

2. A rainwater grate connection and fixing structure according to claim 1, characterized in that: The outermost side of the upper grate (2) is provided with a first mounting portion (23), and the first mounting portion (23) is provided with a plurality of groups of first through holes (231).

3. A rainwater grate connection and fixing structure according to claim 2, characterized in that: The outermost side of the lower grate (4) is provided with a second mounting portion (43), and the second mounting portion (43) is provided with a plurality of groups of second through holes (431).

4. A rainwater grate connection and fixing structure according to claim 3, characterized in that: The first through hole (231) corresponds to the second through hole (431) and a filter screen (3) is sandwiched between them. The lower grate (4), the filter screen (3) and the upper grate (2) are fixedly installed above the supporting annular block (6) by fastening bolts (5).

5. A rainwater grate connection and fixing structure according to claim 4, characterized in that: A transverse groove (21) is provided at the top of the upper grate (2), and a first annular groove (22) is provided on the outer inclined surface of the upper grate (2).

6. The rainwater grate connection and fixing structure according to claim 1, characterized in that: A vertical groove (41) is provided at the top of the lower grate (4), and a second annular groove (42) is provided on the outer inclined surface of the lower grate (4).

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