CN106638912A - A water-saving automatic irrigation and drainage system for green belts - Google Patents

Abstract

The invention relates to a water-saving automatic irrigation and drainage system for greenbelts, which comprises a reservoir, a water inlet channel, a drainage channel, a silt discharge channel, a sponge water absorption pad and a fiber water absorption rod, wherein the reservoir is provided with a water inlet pipe; the cistern is arranged in the stratum of greenbelt bottom plate below and on being located city sewer, and the side wall upper end and the greenbelt bottom plate contact of cistern to the greenbelt bottom plate is the apron, and the cistern is equipped with overflow weir, both sides side wall lower part along greenbelt length direction's both sides side wall upper portion and is equipped with row's silt hole, arrange the drill way department in silt hole and install the automatic flap gate that matches with row's silt hole to realize closing or opening of row's silt hole, evenly distributed has a plurality of through-holes on the greenbelt bottom plate. The water-saving automatic irrigation and drainage system for the green belt can solve the adverse effect on the irrigation of plants in the green belt caused by overhigh or overlow water level of the water collection system, simplify the structure and avoid silt deposition and blockage of the system.

Description

A water-saving automatic irrigation and drainage system for green belts

technology neighborhood

The invention belongs to the technical field of rainwater collection and utilization, in particular to a system integrating rainwater collection and automatic irrigation and drainage for irrigation of green belts.

Background technique

At present, the utilization rate of rainwater in cities is extremely low. Apart from being absorbed by soil vegetation during the rainfall process and partly forming surface runoff and being stored in urban lakes and ponds, most of the rainwater flows out of the city through the urban sewer network system. The irrigation water for the green belt in the city is mainly transported to the green area by vehicles with water tanks, and then watered with pumps. The irrigation is usually in the form of flood irrigation. Due to the high flow rate of the pump, it will cause a large amount of water loss and evaporation while washing away the vegetation and soil. , so the irrigation water consumption is large and the irrigation efficiency is extremely low. In addition, the amount of water carried by vehicles is limited, and the urban green belts located on both sides of the road need to go back and forth for watering many times, and the process of parking and watering will hinder road traffic.

The patent application with the publication number CN103233433A discloses "a system for collecting and utilizing rainwater on urban road surfaces", which includes a water collection system, a blind ditch irrigation network connected to the water collection system, and a drainage system connected to the water collection system. system. Although this system can collect rainwater to irrigate the plants in the green belt, there are the following problems: when the water level of the water collection system is lowered, the water level of the blind ditch cannot be effectively supplied, which easily leads to failure of irrigation; when the water level of the water collection system rises , will soak the root system of the plant, which is not conducive to plant growth; the water collection system and blind ditch will be blocked by sedimentation, making it invalid; the structure is more complicated, and the construction work is relatively large.

Contents of the invention

The purpose of the present invention is to address the deficiencies in the prior art, to provide a water-saving automatic irrigation and drainage system for green belts, to solve the adverse effects of excessively high or low water levels in the water collection system on the irrigation of green belt plants, and to simplify the structure and avoid Silt buildup clogs the system.

The green belt water-saving automatic irrigation and drainage system of the present invention includes a water storage tank, a water inlet channel, a drainage channel, a silt discharge channel, a sponge water-absorbing pad and a fiber water-absorbing rod; In the center and above the urban sewer, the reservoir includes a bottom plate and a side wall surrounding the bottom plate. The upper part of the side walls in the length direction of the green belt is provided with overflow weirs, and the lower part of the side walls is provided with silt discharge holes. The openings of the silt discharge holes are equipped with automatic flap gates that match the silt discharge holes. To realize the closing or opening of the silt discharge hole, there are several through holes evenly distributed on the bottom plate of the green belt; grid and the water diversion structure on the hardened ground, the water diversion structure is connected with the water inlet; the water inlet of the drainage channel is connected with the overflow weir of the reservoir, the water outlet of the drainage channel is connected with the sewer, and the stasis drainage The entrance of the channel is connected with the silt discharge hole, and the outlet of the silt discharge channel is connected with the sewer; the amount of the sponge absorbent pad is limited to satisfy the complete coverage of the green belt bottom plate, and the number of the fiber absorbent rods is the same as that distributed on the green belt bottom plate. The number of through holes is the same, the sponge absorbent pad is laid on the green belt bottom plate, the upper end of each fiber absorbent rod passes through the corresponding through hole on the green belt bottom plate and extends into the sponge absorbent pad, and the lower end of each fiber absorbent rod is immersed in the rainwater stored in the reservoir middle.

In the above water-saving automatic irrigation and drainage system for green belts, the automatic flap gate is composed of a positioning shaft and a baffle, and the baffle is provided with an assembly hole that runs through both sides laterally and matches the positioning shaft. The center line of the back surface of the board is vertical and above the center line. The thickness of the baffle below the assembly hole is greater than the thickness of the baffle above the assembly hole. The baffle is set on the positioning shaft through the assembly hole and can rotate around the positioning shaft. , the two ends of the positioning shaft are respectively fixed on the two side walls of the reservoir at the edge of the silt discharge hole; a limited sill is set on the side wall of the reservoir at the upper edge of the silt discharge hole to prevent the upper part of the baffle from moving away from the reservoir turn.

In the above water-saving automatic irrigation and drainage system for green belts, the thickness of the part of the baffle located below the assembly hole gradually increases, and the lower end surface of the baffle is an inclined plane.

In the aforementioned green belt water-saving automatic irrigation and drainage system, the edge of the baffle is provided with a water-stop rubber for sealing the silt discharge hole when the baffle is in the state of closing the silt discharge hole.

In the above green belt water-saving automatic irrigation and drainage system, the trash rack is a steel wire mesh structure, the lower edge of the trash rack is provided with clips, and the upper edge is provided with two ear holes, and the lower part of the trash rack is inserted through the clips. In the pre-set snap joints on the hardened ground, the upper part is fixed on the side wall of the green belt through the ear holes by screws.

In the aforementioned water-saving automatic irrigation and drainage system for green belts, the bottom plate of the reservoir is a slope bottom plate whose middle part is higher than the edges on both sides.

The water-saving automatic irrigation and drainage system for the above green belt, the water diversion structure is a trough structure or a gentle slope structure, which is convenient for rainwater to collect to the water inlet.

The above-mentioned urban greening and water-saving automatic irrigation and drainage system, the fiber water-absorbing rods can be purchased from the market (the fiber water-absorbing rods used in this application are manufactured by Guangzhou Baiyun District Xinqiu Fiber Products Factory). The fiber water-absorbing rod is non-sticky, has strong water absorption, obvious capillarity, remarkable hydrophilic climbing height, is non-toxic, and is environmentally friendly.

When arranging the urban greening and water-saving automatic irrigation and drainage system of the present invention, it is necessary to lay a sponge pad on the bottom plate of the green belt in advance, and backfill the soil on the sponge pad. According to the difference of the green belt, it can be divided into the following two layout methods: for only herbs and shrub green belts, the water-saving automatic irrigation and drainage system is arranged continuously along the direction of the green belt. At this time, the length of the reservoir is longer, and the overflow weir and silt discharge holes can be arranged on the side wall of the reservoir at a certain distance. Multiple; for the green belts with trees, the arrangement of the water-saving automatic irrigation and drainage system is arranged at intervals below the corresponding green belts in the gaps between the trees. At this time, the length of the reservoir is relatively short, and the overflow weir It can be arranged in the middle of two opposite side walls of the reservoir, and the number of the silt discharge holes can be designed as four, each of which is set on the same side wall as the overflow weir, and is symmetrically arranged on the side wall with respect to the overflow weir. The joint between the bottom of the side wall and the bottom plate of the reservoir.

When arranging the green belt water-saving automatic irrigation and drainage system of the present invention, for the green belt that has no sewer in the stratum below the green belt, it can be poured together with the sewer to form an integrated structure and then installed and buried under the green belt; The green belt with existing sewers in the strata below can be excavated to build the green belt water-saving automatic irrigation and drainage system of the present invention, and connect it with the sewer. At this time, the sewer may be located in the green belt water-saving automatic irrigation and drainage system. Below, it may also deviate from the green belt.

When working, the rainwater from the hardened ground flows into the reservoir after being filtered by the trash rack through the water inlet channel set at the junction of the green belt and the road surface. The rainwater in the rainwater is sent to the sponge absorbent pad, and the water stored in the sponge pad is evenly distributed to the green belt to cultivate the soil for plant absorption. When the water level of the reservoir reaches the elevation of the overflow weir, the excess rainwater will be discharged into the sewer through the overflow weir, and at the same time, the automatic flap gate of the silt discharge hole will automatically open under the action of the water head, and will be drained away under the impact of the water flow. The silt in the reservoir, together with the overflow weir, discharges the urban flood and reduces the urban flood pressure. As the water level in the cistern slowly decreases, the automatic flap gate will automatically close under the action of gravity.

Compared with the prior art, the present invention has the following beneficial effects:

1. Because the system of the present invention uses the transpiration force of the plants and the capillary action of the fiber water-absorbing rod to continuously transport the rainwater in the reservoir to the sponge absorbent pad to realize the water supply for the plants in the green belt, and the reservoir is provided with an overflow weir And the drainage channel is arranged, so that irrigation will not be impossible due to the reduction of the water level in the reservoir, and the growth of plants will not be affected by the increase of the water level in the reservoir.

2. Since the reservoir of the system of the present invention is provided with an overflow weir and a silt discharge hole, and is equipped with a drainage channel and a sewage channel, when the water level of the reservoir reaches the elevation of the overflow weir, the excess rainwater will pass through the overflow The weir and drainage channel are discharged into the sewer, and at the same time, the automatic flap gate at the silt discharge hole will automatically open under the action of the water head, and under the impact of the water flow, the silt in the reservoir will be drained through the sewage channel. The system will not fail due to heavy rainfall and sedimentation clogging.

3. The structure of the automatic flap gate ensures that when the water level of the reservoir is lower than the elevation of the overflow weir, the silt discharge hole is closed, and when the water level of the reservoir reaches the elevation of the overflow weir, the silt discharge hole is opened.

4. The water inlet channel is composed of the water inlet, the trash rack installed at the water inlet and the water diversion structure on the hardened ground. Dirt enters the reservoir.

5. The system of the present invention has a simple structure, is easy to construct, and has a small amount of construction work. In addition, it does not need to consume electric energy or chemical energy during operation, so it is beneficial to environmental protection and popularization.

Description of drawings

Fig. 1 is a kind of structural representation of green belt water-saving automatic irrigation and drainage system of the present invention, and sewer is positioned at right below green belt;

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

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the schematic diagram that the automatic flap gate at the silt discharge hole of the reservoir is in a closed state;

Fig. 5 is the schematic diagram that the automatic flap gate at the silt discharge hole of the reservoir is in an open state;

Figure 6 is a schematic diagram of the installation of the trash rack at the water inlet of the water inlet channel;

Fig. 7 is the structural representation of trash rack;

Fig. 8 is another structural schematic diagram of the water-saving automatic irrigation and drainage system for the green belt described in the invention, the sewer is located under the green belt but deviates from the green belt (the section position is the same as that in Fig. 1A-A);

Fig. 9 is a schematic cross-sectional view of another green belt water-saving automatic irrigation and drainage system with the same structure as Fig. 8, the sewer is located under the green belt but deviates from the green belt (the section position is the same as Fig. 1B-B);

In the figure, 1—reservoir, 1-1—reservoir floor, 1-2—reservoir side wall, 2—drainage channel, 3—silt discharge channel, 4—fiber absorbent rod, 5—sponge absorbent pad , 6—overflow weir, 7—silt discharge hole, 8—automatic flap gate, 8-1—positioning shaft, 8-2—baffle plate, 8-3—limiting sill, 9—water inlet, 10—block Sewage grid, 10-1—clamping piece, 10-2—ear hole, 11—green belt bottom plate, 12—sewer, 13—water diversion structure, 14—hardened ground.

detailed description

The water-saving automatic irrigation and drainage system for green belts of the present invention will be further described below through specific implementation modes.

Example 1

In this embodiment, aiming at the newly-built green belt with arbors without sewers in the lower strata, the water-saving automatic irrigation and drainage system of the green belts and the sewers are poured into an integrated structure with reinforced concrete and then buried in the empty space between the trees. In the formation below the green belt bottom plate 11, the green belt water-saving automatic irrigation and drainage system is located directly above the sewer. The structure of the green belt water-saving automatic irrigation and drainage system is shown in Figures 1 to 7, including a reservoir 1, a water inlet channel 9, a drainage channel 2, a silt discharge channel, a sponge absorbent pad 5 and a fiber absorbent rod 4 (purchased from Xinqiu Fiber Products Factory, Baiyun District, Guangzhou);

The reservoir 1 is arranged in the stratum below the green belt base plate 11 and is located directly above the urban sewer 12. The reservoir includes a base plate and a side wall arranged around the base plate. The top of the side wall of the reservoir is in contact with the green belt base plate. The bottom plate of the green belt is used as the cover plate of the reservoir. The upper side walls of the reservoir 1 along the length direction of the green belt are provided with overflow weirs 6, and the lower parts of the side walls on both sides are provided with silt discharge holes 7. The bottom plate is a slope bottom plate whose middle part is higher than the edges on both sides. The orifice of the silt discharge hole is equipped with an automatic flap gate 8 matched with the silt discharge hole to realize the closing or opening of the silt discharge hole, and there are several through holes evenly distributed on the bottom plate of the green belt;

The water inlet channel is composed of a water inlet 9 arranged at the junction of the green belt bottom plate 11 and the hardened ground 14, a trash rack 10 installed at the water inlet and a water diversion structure 13 on the hardened ground. The hole connection is a trough or gentle slope structure, which is convenient for rainwater to collect into the water inlet 9; the water inlet of the drainage channel 2 is connected with the overflow weir of the reservoir, and the outlet of the drainage channel is connected with the sewer. The entrance of the channel is connected with the silt discharge hole, and the outlet of the silt discharge channel is connected with the sewer;

The amount of the sponge water-absorbing pad 5 is limited to meet the complete coverage of the green belt base plate, the number of the fiber water-absorbing rods 4 is the same as the number of through holes distributed on the green belt base plate, and the sponge water-absorbing pad is laid on the green belt base plate. The upper ends of the fiber water-absorbing rods pass through corresponding through holes on the green belt base plate 11 respectively and stretch into the sponge water-absorbing pads, and the lower ends of each fiber water-absorbing rods are immersed in the rainwater stored in the reservoir.

The automatic flap gate 8 is composed of a positioning shaft 8-1 and a baffle plate 8-2. The baffle plate 8-2 is provided with an assembly hole that runs through both sides laterally and matches the positioning shaft. The center line of the back surface of the board is vertical and above the center line, and the thickness of the part below the assembly hole of the baffle plate 8-2 gradually increases until the thickness of the lower end of the baffle plate 8-2 is that the baffle plate 8-2 is located above the assembly hole 2 times the thickness of the part, and the lower end surface of the baffle is inclined. The baffle is set on the positioning shaft 8-1 through the assembly hole and can rotate around the positioning shaft. The two ends of the positioning shaft 8-1 are respectively fixed on the edge of the drain hole. On the walls on both sides of the water storage tank; the side wall of the water storage tank on the upper edge of the silt discharge hole is provided with a limit ridge 8-3 to prevent the baffle plate top from rotating in a direction away from the water storage tank. The edge of the baffle plate 8-2 is provided with water-stop rubber for sealing the silt discharge hole when the baffle plate is in the state of closing the silt discharge hole.

The trash rack 10 is a steel wire mesh structure, the lower edge of the trash rack is provided with a clip 10-1, and the upper edge is provided with two ear holes 10-2, and the lower part of the trash rack is embedded in the hardened ground through the clips. In the preset card seam, the upper part is fixed on the side wall of the green belt through the ear hole through the screw.

Example 2

This embodiment is aimed at the situation that there are only green belts of herbs and shrubs, and there is a sewer in the strata below the green belt. Excavate the green belt, and arrange the green belt water-saving automatic irrigation and drainage system continuously along the direction of the green belt. ; All the other structures are the same as in Example 1.

Example 3

In this embodiment, it is aimed at the situation that there is no sewer in the stratum below and there is arbor with trees, but the sewer is not far away from the green belt. Excavate the green belt, arrange the water-saving automatic irrigation and drainage system for the green belt in the stratum below the floor of the green belt between the trees in the green belt, and communicate with the waterway through the curved drainage channel and silt discharge channel, see Figure 8. Fig. 9; All the other structures are identical with embodiment 1.

Claims (10)

1. a kind of greenbelt is economized on water automatic irrigation and drainage system with functions, including cistern (1), intake tunnel (9), drainage channel (2), its feature It is also to include row's silt passage (3), sponge sucks in water pad (5) and fibrous absorbent rod (4)；

The cistern (1) is arranged in the stratum below greenbelt base plate (11) and on municipal sewage system (12), is stored The abutment wall that pond includes base plate and arranges around base plate, abutment wall upper end and the greenbelt contacts baseplate of cistern, with greenbelt bottom Plate is the cover plate of cistern, and cistern (1) is provided with downflow weir (6), two sides along two side wall tops of greenbelt length direction Wall bottom is provided with row's silt hole (7), and the balanced wicket (8) matched with row's silt hole is provided with the aperture in row's silt hole, with Turning off or on for the row of realization silt hole, on the greenbelt base plate some through holes are evenly distributed with；

The intake tunnel is by being arranged on water inlet (9) of the greenbelt base plate (11) with hardened ground (14) intersection, be arranged on Drawing water structure (13) composition on the trash rack (10) of water inlet and hardened ground, the drawing water structure is connected with inlet opening； The water inlet of the drainage channel (2) is connected with the downflow weir of cistern, and the delivery port and water passage of drainage channel are described The entrance of row's stasis of blood passage is connected with row's silt hole, arranges outlet and the water passage of stasis of blood passage；

It is described sponge sucks in water pad (5) amount be limited with meeting to be completely covered greenbelt base plate, the number of the fibrous absorbent rod (4) Amount is identical with the number of openings being distributed on greenbelt base plate, and sponge sucks in water, and pad is laid on greenbelt base plate, each fibrous absorbent rod Upper end is each passed through in the pad that stretches into that sponge sucks in water of corresponding through hole on greenbelt base plate (11), and each fibrous absorbent rod lower end extends to Columns base, in being immersed in the rainwater of cistern storage.

2. according to claim 1 greenbelt is economized on water automatic irrigation and drainage system with functions, it is characterised in that the balanced wicket (8) by Locating shaft (8-1) and baffle plate (8-2) are constituted, the group for lateral direction penetrating two sides being provided with baffle plate (8-2) and being matched with locating shaft Dress hole, with the central axis of baffle plate back side and positioned at the center line top, baffle plate is located at assembling to the center line of the assembly hole The thickness of hole section below is located at the thickness of assembly hole upper section more than baffle plate, and baffle plate is sleeved on locating shaft by assembly hole (8-1) can rotate on and around locating shaft, the abutment wall of cistern two of the two ends of locating shaft (8-1) row's silt bore edges fixed respectively On；Limited location bank (8-3) is set on the cistern abutment wall of row's silt hole top edge, to prevent baffle plate top to away from the side of cistern To rotation.

3. according to claim 2 greenbelt is economized on water automatic irrigation and drainage system with functions, it is characterised in that the baffle plate (8-2) is located at assembling The thickness of hole section below gradually increases, and baffle plate lower surface is inclined-plane.

4. the greenbelt according to Claims 2 or 3 is economized on water automatic irrigation and drainage system with functions, it is characterised in that baffle plate (8-2) edge It is provided with when baffle plate becomes silted up poroid state in the row of closing for the watertight rubber in sealing row's silt hole.

5. the greenbelt according to any claim in claims 1 to 3 is economized on water automatic irrigation and drainage system with functions, it is characterised in that described Trash rack (10) is steel wire network structure, and trash rack lower limb is provided with clamping piece (10-1), and top edge is provided with two earholes (10-2), trash rack bottom passes through the intercalation of clamping piece in the default clamping seam of hardened ground, and top passes through earhole by screw It is fixed on greenbelt abutment wall.

6. according to claim 4 greenbelt is economized on water automatic irrigation and drainage system with functions, it is characterised in that the trash rack (10) is steel wire Network structure, trash rack lower limb is provided with clamping piece (10-1), and top edge is provided with two earholes (10-2), trash rack bottom By the intercalation of clamping piece in the default clamping seam of hardened ground, top is fixed on greenbelt abutment wall by screw through earhole On.

7. the greenbelt according to any claim in claims 1 to 3 is economized on water automatic irrigation and drainage system with functions, it is characterised in that described The base plate of cistern is slope base plate of the middle part higher than both sides of the edge.

8. according to claim 4 greenbelt is economized on water automatic irrigation and drainage system with functions, it is characterised in that during the base plate of the cistern is Slope base plate of the portion higher than both sides of the edge.

9. the greenbelt according to any claim in claims 1 to 3 is economized on water automatic irrigation and drainage system with functions, it is characterised in that described Drawing water structure (13) is slot type structure or gentle slope structure, is easy to rainwater to collect to water inlet (9).

10. according to claim 4 greenbelt is economized on water automatic irrigation and drainage system with functions, it is characterised in that the drawing water structure (13) is groove Formula structure or gentle slope structure, are easy to rainwater to collect to water inlet (9).