CN202658699U - Initial rainwater distributing device - Google Patents

Abstract

An initial rainwater diversion device, including diversion ditch ⑴, overflow ditch ⑵, overflow outlet ⑶, water inlet cover ⑷, upper baffle ⑸, support rod ⑹, sliding rod ⑺, water blocking wall ⑻, floating plate ⑼ and The lower baffle ⑽, the upper baffle ⑸, the floating plate with a middle hole ⑼, and the lower baffle ⑽ are sequentially arranged on the slide rod ⑺ from top to bottom, and the diameter of the slide rod ⑺ is smaller than the diameter of the middle hole of the floating plate ⑼ , the diameter of the middle hole of the floating plate ⑼ is smaller than the diameter of the upper baffle ⑸ or the diameter of the lower baffle ⑽, the diameter of the floating plate ⑼ is larger than the diameter of the water inlet cover ⑷; the position of the upper baffle ⑸ is slightly higher than the inlet Water cover mouth ⑷. Its advantages are: the utility model can be widely used in rural ecological treatment systems and other sewage treatment facilities, so that it intercepts and treats heavily polluted initial rainwater during the rainy season and directly discharges relatively clean later rainwater; no electrical control or other power is required equipment, and the manufacturing process is simple, easy to mass-produce, and low cost.

Description

An initial rainwater diversion device

technical field

The utility model relates to the technical field of water supply and drainage, in particular to an initial rainwater diversion device.

Background technique

With the rapid development of the rural economy, the discharge of agricultural waste and the use of agricultural chemicals have increased, and non-point source pollution has intensified. However, the construction of rural environmental protection infrastructure has not been carried out simultaneously, resulting in rural pollution loads exceeding the environmental capacity. The deterioration of the rural environment has limited the development of the rural economy, so it is necessary to comprehensively improve the rural environment. At present, the unrenovated old village sewage is discharged randomly without treatment, flowing into farmland, ponds or directly seeping into the ground, damaging the local ecological environment. The domestic sewage in the demonstration area basically enters ecological ponds, biological filters and other ecological treatment systems through diversion ditches for natural ecological treatment, which reduces rural pollutant discharge, improves the ecological environment of villages, and thus improves the quality of life of farmers.

However, during the rainy season, a large amount of rainwater will also enter the ecological treatment system along with the diversion ditches, causing the water intake to greatly exceed the hydraulic load of the ecological treatment system, causing ecological system disorder, and may directly flush a large amount of untreated sewage in the treatment pond into the ecological treatment system. Water storage and reuse ponds or clear water ponds cause the water quality standards of the water storage and reuse ponds to fail to meet the reuse standards or the clean water ponds are polluted. Therefore, we need to prevent a large amount of rainwater from entering the ecological treatment system through the device. At the same time, we must also be aware of the pollution threat of the initial rainwater in the rainwater. It washes away a lot of air pollutants, and due to the scouring effect of the surface runoff, the initial rainwater also washes away the dust and other pollutants on the rained surface. Rainwater must enter the sewage system for treatment.

Most of the existing primary rain diversion devices have the following deficiencies. First, electrical control or other power equipment is required, which is not applicable to the ecological treatment system built in the rural environment; second, the manufacturing process of the device is complicated and mass production Difficult and costly.

Utility model content

The purpose of this utility model is to provide an initial rainwater diversion device, which does not need any electrical control or other power equipment, and has simple manufacturing process, easy mass production and low cost.

The utility model is an initial rainwater diversion device, comprising: a water diversion ditch, an overflow ditch, an overflow opening, a water inlet cover and a water blocking wall, the water inlet cover is connected with one end of the water diversion ditch, and the overflow ditch The overflow port communicates with the middle part of the water diversion ditch, the bottom surface of the overflow ditch and the plane of the water inlet cover are on the same plane as the bottom surface of the water diversion ditch, and the overflow port is slightly higher than this plane by 3-8 cm; the device also It includes an upper baffle, a support rod, a sliding rod, a floating plate and a lower baffle. One end of the supporting rod is connected to the sliding rod, and the other end is fixed on the water blocking wall. The upper baffle, the floating plate with a middle hole, The lower baffles are sequentially arranged on the slide rods from top to bottom, the diameter of the slide rods is smaller than the diameter of the middle hole of the floating disc, the diameter of the middle hole of the floating disc is smaller than the diameter of the upper or lower baffles, and the diameter of the floating disc The diameter is greater than that of the water inlet cover; the position of the upper baffle is slightly higher than the water inlet cover.

The floating disc is a convex hollow disc.

The initial rainwater diversion device of the utility model is realized in this way: when the water inflow suddenly increases in rainy days, after the water inflow causes the water surface of the treatment pond 11 to reach the height of the water inlet cover 4, the floating plate 9 floats up to the water inlet along the slide bar 7 along with the water surface The cover 4, the edge of the floating plate 9 and the edge of the water inlet cover 4 are closely attached under the action of buoyancy, and the middle hole of the floating plate 9 is also blocked by the upper baffle 5, so that the water inlet is closed, and then the rainwater will flow in the water diversion ditch 1 When it reaches the height of the overflow port 3, the rainwater will flow continuously through the overflow port 3 from the overflow ditch 2 into the water storage and reuse pond or the clear water pond, so as to achieve the purpose of initial rainwater entering the pond for treatment and later rainwater direct discharge . When the daily amount of sewage is ingested and there is no rain, the floating plate 9 is above the lower baffle 10, and the lower baffle 10 blocks the floating plate 9 and continues to descend along the slide bar 7 with the water surface. During this period, the cover 4 is always in the In the open state, that is, the device is in the dormant stage at this stage.

The advantages of the initial rainwater diversion device of the utility model are: the utility model can be widely used in rural ecological treatment systems (including ecological ponds, land infiltration systems and biological filters, etc.) The heavily polluted initial rainwater is directly discharged into the relatively clean later rainwater; no electrical control or other power equipment is required, and the manufacturing process is simple, easy to mass produce, and low in cost.

Description of drawings

Fig. 1 is the structural representation of the initial rainwater distribution device of the utility model;

Fig. 2 is the A-A direction sectional view of Fig. 1;

Fig. 3 is a sectional view taken along line B-B of Fig. 1 .

Among them, 1 is the diversion ditch, 2 is the overflow ditch, 3 is the overflow port, 4 is the water inlet cover, 5 is the upper baffle, 6 is the support rod, 7 is the sliding rod, 8 is the water blocking wall, and 9 is the floating wall. Disc, 10 is lower baffle plate, and 11 is processing pond.

Detailed ways

Embodiment one

Below in conjunction with accompanying drawing, the utility model is further described: as shown in Figure 1-3, existing treatment pond 11 banks are provided with diversion ditch 1, overflow ditch 2, overflow mouth 3, water inlet cover mouth 4 and resistance Water wall 8, the water inlet cover 4 communicates with one end of the water diversion ditch 1, the overflow ditch 2 communicates with the middle part of the water diversion ditch 1 through the overflow port 3, the bottom surface of the overflow ditch 2 and the water inlet cover 4 planes are all on the same plane as the bottom surface of the water diversion ditch 1, and the overflow port 3 is slightly higher than this plane by 3-8 centimeters. The water blocking wall 8 can prevent the water from jumping over the water inlet cover and directly entering the treatment pond 11 .

The initial rainwater diversion device includes an upper baffle 5, a support rod 6, a slide bar 7, a floating plate 9, and a lower baffle 10. The support rod 6 is connected to the slide bar 7 to play the role of fixing the slide bar 7. The disc 9 is a convex hollow disc with a middle hole, the diameter of which is larger than the diameter of the slide bar 7, so that it can freely float up and down along the slide bar 7, and the diameter of the upper baffle plate 5 is larger than the diameter of the middle hole of the floating disc 9, and the position is slightly higher At the water inlet cover 4, the floating plate 9 can be raised to the water inlet cover 4 to match it, thereby blocking the water inflow. The lower baffle 10 is located at the end of the slide rod 7, and its diameter is larger than the diameter of the middle hole of the floating plate 9 , floating plate 9 can be made to stop on it when the water level of treatment pond 11 is low.

Embodiment two

As shown in Figures 1-3, the treatment pond 11 is an ecological pond. After taking into account the initial rainwater volume, the size of the pond and the height of the water intake cover, the initial rainwater can be better diverted to prevent the disorder of the pond caused by all the rainwater entering the pond or the water pollution caused by all the discharge. Other composition and connection methods are the same as those in Embodiment 1.

Embodiment Three

As shown in Figures 1-3, the treatment pond 11 is a biological filter. Other composition and connection methods are the same as those in Embodiment 1.

Embodiment Four

As shown in Figures 1-3, the treatment pond 11 is a land infiltration pond. Other composition and connection methods are the same as those in Embodiment 1.

The amount of initial rainwater treated by the treatment pond is determined by the height of the cover opening. The calculation principle of the cover opening height is as follows: because the daily sewage enters the pond with a certain amount of water, and the water surface of the pond maintains a certain height, it only needs to be obtained when it rains in the area. The water volume in the first 30 minutes (that is, the initial rainwater volume), and calculate the height of the water surface rise caused by the rainfall entering the pond, then this height plus the daily water surface height of the pond is the height of the water inlet cover. The rainfall in the first 30 minutes can be calculated according to the following formula:

The empirical formula can also be used to calculate the rainfall i = 16.26*S*0.001/2 in the first 30 minutes based on the maximum rainfall intensity of heavy rain of 16.26mm/h, where S is the catchment area under the jurisdiction of the treatment pond, and the unit is ㎡. In this way, the height of the water inlet cover can be obtained as H=i/a+h, where i is the rainwater inflow in the first 30 minutes, and the unit is m3; a is the water surface area of the treatment pond, and the unit is ㎡; h is the daily water surface height of the pond, The unit is m.

Claims (2)

1. early-stage rainwater part flow arrangement, comprise diversion irrigation canals and ditches ⑴, overflow irrigation canals and ditches ⑵, overfall ⑶, water inlet lid mouthful ⑷ and the wall ⑻ that blocks water, a described water inlet lid mouthful ⑷ is communicated with the end of diversion irrigation canals and ditches ⑴, described overflow irrigation canals and ditches ⑵ is communicated with the middle part of diversion irrigation canals and ditches ⑴ by overfall ⑶, described overflow irrigation canals and ditches ⑵ bottom surface and a water inlet lid mouthful ⑷ plane all are in same plane with diversion irrigation canals and ditches ⑴ bottom surface, 3～8 centimetres on a little higher than this plane of described overfall ⑶; It is characterized in that: also include overhead gage ⑸, support bar ⑹, slide bar ⑺, floating plate ⑼ and lower baffle plate ⑽, described support bar ⑹ one end links to each other with slide bar ⑺, the other end is fixed on the wall ⑻ that blocks water, described overhead gage ⑸, be successively set on from top to bottom on the slide bar ⑺ with floating plate ⑼, the lower baffle plate ⑽ of mesopore, the diameter of described slide bar ⑺ is less than floating plate ⑼ median pore diameter, described floating plate ⑼ median pore diameter is less than the diameter of overhead gage ⑸ or lower baffle plate ⑽, and the diameter of described floating plate ⑼ is greater than the diameter of water inlet lid mouthful ⑷; The position of described overhead gage ⑸ is a little more than water inlet lid mouthful ⑷.

2. a kind of early-stage rainwater part flow arrangement as claimed in claim 1, it is characterized in that: described floating plate ⑼ is the hollow disk of convex.

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