CN205035895U - Rainwater grate - Google Patents

Abstract

The utility model provides a rainwater grate, including framework and duo gen grate strip, the framework is circular or oval, and the outer tip of all grate strips is all connected a plurality of wash ports have been offered in the intermediate position of framework and together fixed to the inner wall of framework, the inner position of all grate strips on the every grate strip, have the drainage clearance between two adjacent grate strips, stride on the drainage clearance and be equipped with the drainage bridge, the drainage bridge with a plurality of drainage breachs have been offered respectively to drainage clearance one -to -one on the both sides wall of drainage bridge, the edge of framework is equipped with the convex annular surrounding edge that makes progress. The utility model discloses can not only guarantee the displacement, prevent the problem blockked up from effectively to prevent to take out moreover through annular surrounding edge the utility model discloses the time during debris fall into drainage system, avoided leading to the fact the influence to drainage system, also brought very big convenience for staff's work.

Description

Rain grid

Technical field

The utility model relates to draining field, particularly relates to a kind of rain grid.

Background technology

In urban sewerage and drainage system, inlet for stom water is the entrance that surface flow rainwater flows into drainage system, filters foreign material by arranging rain grid at inlet for stom water.Existing rain grid forms cell structure by many grizzly bars or square hole usually, while draining, the foreign material in current is played to the effect of filtering and retaining.Rain grid mainly contains vertical grate formula peace grate formula two kinds, and the gutter installing vertical grate formula need keep certain depth of water, and some cities and towns are because keeping in repair road year by year, because road surface is increased, vertical grate section reduced, and outlet capacity is received in impact.Adopt flat grate formula by condition restriction is general, flat grate formula current are unobstructed, but the foreign material that the area carried in rainwater during heavy rain is larger, as leaf, polybag, paper shell, food garbages etc. easily block on grate, reduce and receive outlet capacity, and grate too much can be shut by foreign material delay, causes ponding problem.

Chinese invention patent 201110400717.1 discloses a kind of urban road storm runoff desanding device, be mainly used in the silt that removal urban road storm runoff carries, this device goes out to flow device four part by rain grid, collecting well, automatic locking mud mechanism, mud-collecting well and swash plate and forms.But this device still builds under silt can enter the prerequisite of rain grid smoothly, does not but propose effective solution to the blocked water problem of cannot arranging of rain grid.

Chinese invention patent 201110167774.X discloses a kind of gutter inlet device, the film bag that elastic non-porous material is made is connected with at the rain grid back side, described elastic material membrane bag top peripheral wall surfaces has the through micropore otch of some rows, under rainwater flows into Action of Gravity Field, open filtration, flow into gravity without rainwater and reduce micropore according to the closed trapping of natural resiliency contraction.This patent only plays a role in filtering to the silt in rainwater, and personnel need be arranged often to safeguard, practical value is not high.

Except said structure, what existing rain grid had is arranged on below ground, cleaning needs to be taken out when safeguarding, and when taking out, foreign material on rain grid are easy to enter drainage system and cause adverse consequences, therefore, how while guarantee drainage effect, prevent from rain grid foreign material enter drainage system when taking out being those skilled in the art's technical issues that need to address.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of rain grid, easily blocks, foreign material easily enter the problem in drainage system when picking and placeing cleaning for solving rain grid in prior art.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of rain grid, comprise framework and Duo Gen grate bar, described framework is circular or oval, the outer end of all grate bars is all connected to the inwall of described framework, the inner end of all grate bars is positioned at the centre position of framework and is fixed together, every root grate bar offers multiple drain hole, between adjacent two grate bars, there is drainage gap, described drainage gap has draining bridge, draining bridge and described drainage gap one_to_one corresponding, the two side of draining bridge offers respectively multiple draining breach, the edge of described framework is provided with annular surrounding edge protruding upward.

Preferably, described surrounding edge offers weepage holes.

Preferably, described framework center is provided with disk, and the inner end of described grate bar is all connected with the outer rim of described disk.

Further, described disk is provided with multiple drain hole.

Preferably, described draining bridge is domes, and its vault closes on the centre position of described framework.

Preferably, the bridge floor of described draining bridge is provided with row's projection.

Preferably, the drain hole on described grate bar is square hole, circular hole or polygonal hole.

Preferably, the bottom of described draining breach is concordant with the upper surface of described grate bar.

Preferably, the radical of described grate bar is 5 ~ 50.

Preferably, described rain grid is one-body molded by mould.

As mentioned above, the utility model rain grid, has following beneficial effect:

The utility model by the spatial intersecting stereochemical structure between grate bar and draining bridge, and adopts the combination of drain hole, draining breach and drainage gap to hold susceptible to plugging problem to ensure displacement and to solve.When reality uses, too much the drain hole on grate bar is caused to block even if cross bigger material because of discharge, current also can enter drainage system via the draining breach on draining bridge by the drainage gap between adjacent grate bar, while guarantee displacement, solve blockage problem.In addition, the utility model is provided with annular surrounding edge structure, and when it can effectively prevent from taking out the utility model, foreign material are fallen in drainage system, avoid and impact drainage system, brings great convenience also to the work of staff.

Accompanying drawing explanation

Fig. 1 is structure chart of the present utility model.

Fig. 2 is the three-dimensional view of draining bridge in the utility model.

Fig. 3 is the front view of draining bridge in the utility model.

In figure: 1, framework 2, grate bar

21, drain hole 3, drainage gap

4, draining bridge 41, draining breach

42, projection 5, annular surrounding edge

51, weepage holes 6, disk

61, drain hole

Detailed description of the invention

The structure that Figure of description illustrates, ratio, size etc., content all only in order to coordinate manual to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, all should still drop in scope that technology contents that the utility model discloses can contain.Simultaneously, quote in this manual as " on ", D score, "front", "rear", the term such as " centre ", also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.

Fig. 1-Fig. 3 is a kind of rain grid of the utility model, comprise framework 1 and Duo Gen grate bar 2, described framework is circular or oval, framework 1 is for supporting total, consider circular more firm than ellipse, stress deformation is less, and convenient when reality uses, also processing is convenient to, therefore circular framework.In the utility model, the outer end of all grate bars 2 is all connected to the inwall of described framework 1, and the inner end of all grate bars 2 is positioned at the centre position of framework 1 and is fixed together.Every root grate bar 2 offers multiple drain hole 21 for draining, between adjacent two grate bars 2, there is drainage gap 3, described drainage gap 3 has draining bridge 4, draining bridge 4 and described drainage gap 3 one_to_one corresponding, the two side of draining bridge 4 offers respectively multiple draining breach 41, the bottom of described draining breach 41 is concordant with the upper surface of described grate bar 2.When discharge is comparatively large, or when drain hole 21 on grate bar 2 is blocked, current can be flowed in drainage system by described draining breach 41.For ease of structure and the position of clear and definite expression draining bridge 4, a draining bridge 4 is only shown in Fig. 1, actual should be on each drainage gap 3 all has a draining bridge 4.Grate bar 2 in the utility model can be various shape, such as linear pattern, arc etc.Preferably arc grid bar is adopted in the present embodiment, all arc grid bars with framework 1 centre position for lining up turbine-like in turn in the center of circle, namely the structure shown in Fig. 1, arc grid bar can improve integrally-built reasonability on the one hand, more can be convenient to the discharge of rainwater on the one hand, make current form eddy-currents in flow process, eddy-currents can accelerate the flow velocity of water.According to water body mechanics principle; foreign material in current are because centrifugal force and Action of Gravity Field; in current lighter weight foreign material as leaf etc. can be pooled to eddy-currents peripheral with current not stop and rotation until current are emptied completely; avoid its deposition blocking on arc grid bar, and the foreign material of heavier mass such as the grains of sand etc. can be assembled to eddy-currents center and flow into drainage system through drain hole 21 in this process.

As shown in Figure 1, framework 1 edge on this rain grid is provided with annular surrounding edge 5 protruding upward.Concrete, because this rain grid is mainly arranged on the well head place of the drainage system of below ground, its objective is to form filtration to rainwater, preventing foreign material from entering drainage system.After long-term use, a large amount of foreign material can be assembled in the surface of this rain grid, therefore need to clear up it in time, but because this rain grid locates below ground level, so need to be taken out during cleaning, fall into drainage system in order to the foreign material on this rain grid surface when preventing from taking out from edge and cause adverse consequences, this rain grid is provided with annular surrounding edge 5 at the edge of framework 1, by annular surrounding edge 5, barrier effect is played to the foreign material on this rain grid surface, thus effectively prevent foreign material from dropping from edge.Described annular surrounding edge 5 is unsuitable too high, otherwise can affect drainage effect, is advisable in 3 centimetres, the edge generally higher than framework 1.Further, described annular surrounding edge 5 has multiple weepage holes 51, so that draining in time, avoid because annular surrounding edge 5 is too high and cause ponding.

Under the prerequisite adopting above-mentioned preferred structure, because the utility model the closer to the drain hole 21 of centre position grate bar 2 and the draining breach 41 of draining bridge 4 less, drainage gap 3 is also narrower, so draining sectional area is also less, when discharge is excessive, the catchment area in this rain grid centre position can be caused to increase, water level increases, until form an overall water surface and eddy-currents cannot be formed, so in order to produce eddy-currents to ensure draining flow velocity, described draining bridge 4 is designed to domes, namely as Fig. 2, shown in Fig. 3, it is from increasing highly gradually outside to inside, vault is formed when closing on the centre position of this rain grid, decline highly gradually afterwards, eddy-currents is formed by the height of water level difference in vault and the utility model centre position, thus ensure draining flow velocity.Further, the bridge floor of draining bridge 4 is provided with row's projection 42.When current reduce, the flow velocity of eddy-currents reduces, and foreign material deposit gradually, and foreign material can be blocked on one of them or a few draining bridge 4 by protruding 42, and remaining draining bridge 4 still can ensure proper drainage.

The center of this rain grid is provided with disk 6, and the inner end of all grate bars 2 is all connected with the outer rim of disk 6.Disk 6 to arrange the height of water level that can increase described draining bridge 4 vault and grate 2 centre position further poor.Further, as shown in Figure 1, disk 6 also offers multiple drain hole 61 for draining.The bearing strength in framework 1 centre position is also contributed to increasing by arranging disk 6.

In the present embodiment, described grate bar 2 is inside ends taper from outer end, reason is: the outer rim that many grate bars 2 are all connected to described disk 6 can make the grate bar 2 at outer rim place compare comparatively dense, also drainage gap 3 will be caused narrow, therefore, in order to make integrally-built layout more reasonable, be convenient to the setting of draining bridge 4 simultaneously, described grate bar 2 is inside ends taper, i.e. narrowed width from outer end.

When reality uses, the radical of grate bar 2, width, number, the size of drain hole 21,61 and draining breach 41 should be determined according to practical application, as being applied to biotope, what then grate bar 2 can be arranged is wide less, as being applied to urban road, then grate bar 2 can arrange many and thin.The radical of grate bar 2 is generally limited to 5 ~ 50, and the drain hole 21 on grate bar 21 and the draining breach 41 on draining bridge 4 do corresponding adjustment according to grate bar 2 radical.Drain hole 21 in this rain grid on grate bar 2 is square hole, circular hole or polygonal hole.As shown in Figure 1, the drain hole 21 in the present embodiment on grate bar 2 is circular, and as shown in Figure 2 or Figure 3, the draining breach 41 on draining bridge 4 is irregular hole shape.The hole shape setting principle of described drain hole 21 and draining breach 41 is should be large as far as possible when ensureing bearing strength, to ensure drain discharge.

The material of this rain grid determines such as have high strength and corrosion resistant plastics, metal or fibrous concrete etc. according to concrete economic budget and applied environment.This rain grid can be one-body molded by mould; Also can make framework 1 respectively, grate bar 2 and draining bridge 4, then it is integrally welded or other connected mode is spliced into one, and as arranged bayonet socket, draw-in groove is used for clamping.

In sum, the utility model rain grid, by the spatial intersecting stereochemical structure between grate bar and draining bridge, adopt the combination of drain hole, draining breach and drainage gap ensure displacement and solve blockage problem, and can effectively prevent foreign material from entering drainage system when taking off the utility model and clearing up.So the utility model effectively overcomes practical problems more of the prior art thus has very high value and use meaning.

Above-mentioned embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.The utility model also has many aspects can improve under the prerequisite of overall thought, all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or change for person skilled in the art scholar.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.

Claims (10)

1. a rain grid, it is characterized in that: comprise framework and Duo Gen grate bar, described framework is circular or oval, the outer end of all grate bars is all connected to the inwall of described framework, the inner end of all grate bars is positioned at the centre position of framework and is fixed together, every root grate bar offers multiple drain hole, between adjacent two grate bars, there is drainage gap, described drainage gap has draining bridge, draining bridge and described drainage gap one_to_one corresponding, the two side of draining bridge offers respectively multiple draining breach, the edge of described framework is provided with annular surrounding edge protruding upward.

2. rain grid according to claim 1, is characterized in that: described surrounding edge offers weepage holes.

3. rain grid according to claim 1, is characterized in that: described framework center is provided with disk, and the inner end of described grate bar is all connected with the outer rim of described disk.

4. rain grid according to claim 3, is characterized in that: described disk is provided with multiple drain hole.

5. rain grid according to claim 1, is characterized in that: described draining bridge is domes, and its vault closes on the centre position of described framework.

6. rain grid according to claim 1, is characterized in that: the bridge floor of described draining bridge is provided with row's projection.

7. rain grid according to claim 1, is characterized in that: the drain hole on described grate bar is square hole, circular hole or polygonal hole.

8. rain grid according to claim 1, is characterized in that: the bottom of described draining breach is concordant with the upper surface of described grate bar.

9. rain grid according to claim 1, is characterized in that: the radical of described grate bar is 5 ~ 50.

10. rain grid according to claim 1, is characterized in that: described rain grid is one-body molded by mould.