CN104604644A - Environmentally-friendly water-saving type root infiltrating irrigation device used for light greening - Google Patents

Abstract

The invention relates to an environment-friendly and water-saving root seepage irrigation device for light greening, which includes a seepage irrigation pipe and a water supply system connected to the seepage irrigation pipe. A U-shaped anti-seepage groove is arranged below the seepage irrigation pipe. The bottom of the anti-seepage tank is provided with a first waterproof layer, and the bottom of the anti-seepage tank is provided with a drainage board, a second waterproof layer and a root-resistance layer in sequence. The seepage irrigation pipe includes a pipe body, and a water outlet channel is formed along the length of the pipe body. An expansion groove is formed on the pipe body along one side of the water outlet channel and opens to the outside of the tube, and the expansion groove only has the opening to the outside of the tube, and is formed along the other side of the water outlet channel to fit the outer wall of the expansion groove Thereby closing the sealing edge of the water outlet channel, the expansion groove is provided with an expansion body that can absorb water and expand, thereby making the outer wall of the expansion groove fit the sealing edge, and several elastic reset structures are arranged at the opening of the expansion groove. The invention can perform water-saving irrigation according to soil humidity, and collect excess irrigation water and rainwater to maintain soil humidity and facilitate plant growth.

Description

An environmentally friendly and water-saving root infiltration irrigation device for light greening

technical field

The invention relates to a seepage irrigation device, in particular to an environmental protection and water-saving root seepage irrigation device for light greening, which is used for self-regulating water-saving irrigation of artificial greening facilities such as roofs and underground garage tops.

Background technique

With the development of urbanization, the land available for greening in cities is becoming less and less. As a form of greening that does not occupy the ground, the greening function of various building roofs has attracted more and more attention: it can not only add green to the city, but also reduce the radiant heat from the roof of building materials and reduce the urban heat island effect. If it is well utilized and promoted to form an urban aerial greening system, its effect on improving the urban environment is immeasurable.

However, the temperature and humidity conditions are often poor on the top of the building. On the one hand, due to the open space and high position, the wind speed is higher than that on the ground, and the water evaporates faster; the higher the distance from the ground, the worse the greening conditions. At the same time, roof planting needs to consider the load-bearing capacity of the roof. Therefore, it is necessary to reduce the amount of planting soil as much as possible. If the amount of planting soil is small, the water storage capacity of plants will further deteriorate, the speed of water and soil erosion will accelerate, and plants will easily dry up and die.

The existing irrigation method requires manual sprinkling irrigation, which is time-consuming and laborious, and when the planting area is large, this sprinkling method has uneven watering, some plants cannot be irrigated, and the amount of watering is large, which is very wasteful. In addition, the root of the plant is the main part of the plant to absorb water, and this sprinkling method cannot make the plant fully absorb the water resource, resulting in a great waste of water resource. Due to the lack of water resources in cities, this planting method will undoubtedly lead to high cost of green roofs, which is not conducive to the sustainable development of cities, and it is difficult to promote green roofs.

Seepage irrigation, that is, underground irrigation, is an irrigation method that uses underground pipes to input irrigation water into the field and bury it in a seepage pipe or rat hole at a certain depth underground, and moistens the soil with the help of soil capillary action. The main advantages of infiltration irrigation are: ①The soil remains loose after irrigation, does not damage the soil structure, does not cause soil surface compaction, and provides good soil moisture for crops; ②Low surface soil humidity can reduce ground evaporation; ③Pipeline Buried in the ground, it can reduce land occupation, facilitate transportation and field operations, and can perform irrigation and farming activities at the same time; ④ less irrigation water, high irrigation efficiency; ⑤ can reduce the growth of weeds and plant diseases and insect pests; Low, so it can reduce power consumption and save energy. At the same time, infiltration irrigation also has disadvantages such as high investment, complicated construction, and difficult management and maintenance. Therefore, it is necessary to design a kind of infiltration and irrigation device suitable for artificial greening facilities with thin soil substrates such as building tops, which is simple in construction, convenient in management and maintenance, and low in cost.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides an environmentally friendly and water-saving root infiltration irrigation device for light greening, which is used for self-regulating water-saving irrigation of artificial greening facilities such as roofs and underground garage tops, and construction Simple, convenient management and maintenance, low cost.

In order to achieve the above object, the present invention adopts the following technical solutions:

An environment-friendly and water-saving root seepage irrigation device for light greening, comprising a seepage irrigation pipe (1) and a water supply system connected to the seepage irrigation pipe (1), characterized in that: in the seepage irrigation pipe (1) A U-shaped anti-seepage groove (2) is arranged below, the bottom of the anti-seepage groove (2) is provided with a first waterproof layer (2a), and the bottom of the anti-seepage groove (2) is successively provided with a drainage board (3), a second The waterproof layer (4) and the root-resistance layer (5), the seepage irrigation pipe (1) includes a pipe body, a water outlet channel (11) is formed along the length of the pipe body, and a water outlet channel (11) is formed along the pipe body along the water outlet channel (11). An expansion groove (12) with an opening (12a) to the outside of the pipe body (1) is formed on the side, and the expansion groove (12) only has the opening (12a) to the outside of the pipe body, and the other opening (12a) along the outlet channel (11) The side forms a sealing edge (13) that can be attached to the outer wall of the expansion groove (12) to close the water outlet channel (11). ) and the expansion body (14) where the outer wall of the expansion groove (12) is bonded to the sealing edge (13), and several elastic reset structures (15) are arranged at the opening (12a) of the expansion groove (12). In the present invention, through the seepage irrigation pipe connected with the water supply system, an anti-seepage groove is arranged under the seepage irrigation pipe, on the one hand, it can prevent the water coming out of the seepage irrigation pipe from seeping downwards, and enhance the effect of seepage irrigation; on the other hand, it can collect and utilize Rainwater is used for plant irrigation; a drainage board is set under the anti-seepage tank to remove excess water and prevent water accumulation; the second waterproof layer and root-blocking layer can protect the roof of the building from being damaged by the roots of plants; at the same time, seepage irrigation The tube is provided with expansion grooves with openings to the outside of the tube, the expansion body and the matching sealing edge. The expansion body can absorb the moisture in the soil, realize the perception of soil humidity, and then control the opening and closing of the water outlet channel through water absorption expansion and water shortage contraction. Closed to achieve precise irrigation of the soil; and the expansion groove only has the opening to the outside of the tube, the expansion body only contacts and senses the moisture in the soil, prevents contact with the water in the tube body, enhances sensitivity, and has a better use effect ; The elastic reset structure provides elastic reset force for the expansion groove, so that the expansion and retraction effect of the expansion groove is good, and the service life is prolonged.

Further, the expansion groove (12) is in the shape of a round tube with an opening (12a) in the longitudinal direction as a whole, and the connection between the expansion groove (12) and the tube body is located on one side of the expansion groove (12), and the sealing edge (13) Located below the opening (12a) of the expansion groove (12), the length of the opening (12a) is about 1/5-1/3 of the circumference of the expansion groove (12). The effect of expansion and retraction of the expansion groove is good, and the service life is long.

Further, the elastic reset structure (15) is an elastic brace or film. The structure is simple, the processing is convenient and the effect is good.

Further, a water-permeable isolation layer (8) is arranged at the opening (12a) of the expansion groove (12) and above the elastic reset structure (15). Seals out soil and other impurities to prevent clogging.

Further, a water-permeable isolation layer (8) is provided on the outer casing of the pipe body, and there are several water diversion strips (9) on the water-permeable isolation layer (8). It can isolate soil and other impurities outside the pipe to prevent clogging; at the same time, the water diversion strip can drain irrigation water to make irrigation more uniform.

Further, the surface of the drainage board (3) has several drainage holes (3a), and the bottom of the drainage board (3) is provided with several ribs (3b). Drains excess water and prevents plant roots from pooling.

Further, the seepage irrigation pipe (1) has an outer diameter of 20 mm and an inner diameter of 16 mm, and is arranged at intervals of 20 cm, and is laid in the planting soil at a depth of 25-30 cm. The effect of seepage and irrigation is good.

Therefore, the present invention can automatically adjust the soil water-saving irrigation according to the soil humidity, reduce the degree of manual intervention, and reduce maintenance costs; at the same time, it can collect excess irrigation water and rainwater to maintain soil moisture, further saving water resources.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the structural representation of the seepage irrigation pipe of the embodiment of the present invention;

3-6 are cross-sectional views of the permeation irrigation pipe according to the embodiment of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. The present invention is the same as the prior art Parts will refer to prior art.

As shown in Figure 1, an environmental protection and water-saving root seepage irrigation device for light greening includes a seepage irrigation pipe 1 and a water supply system connected to the seepage irrigation pipe 1, and a U Type anti-seepage tank 2, the bottom of the anti-seepage tank 2 is provided with a first waterproof layer 2a, and the bottom of the anti-seepage tank 2 is provided with a drainage board 3, a second waterproof layer 4 and a root-resistance layer 5 in sequence.

As shown in Figures 2-4, the permeation irrigation pipe 1 includes a pipe body, a water outlet channel 11 is formed along the length of the pipe body, and an opening 12a is formed on the pipe body along one side of the water outlet channel 11 to the outside of the pipe body 1. The expansion groove 12, and the expansion groove 12 only has the opening 12a to the outside of the pipe, and forms a sealing edge 13 along the other side of the water outlet channel 11 that can be attached to the outer wall of the expansion groove 12 to close the water outlet channel 11 The expansion groove 12 is provided with an expansion body 14 that can absorb water and expand, so that the outer wall of the expansion groove 12 is bonded to the sealing edge 13, and several elastic reset structures 15 are arranged at the opening 12a of the expansion groove 12.

In this embodiment, the expansion groove 12 is generally in the shape of a circular tube with an opening 12a in the longitudinal direction, the connection between the expansion groove 12 and the tube body is located on one side of the expansion groove 12, and the sealing edge 13 is located 12 below the opening 12a, the length of the opening 12a is about 1/5-1/3 of the circumference of the swelling groove 12. The elastic reset structure 15 is an elastic brace or film.

The expansion body 14 can use reusable water-absorbing swellable materials in the prior art, such as water-absorbing swellable rubber. In this embodiment, the elastic reset structure 15 adopts an elastic sheet-shaped rubber film. At the same time, in order to enhance the water permeability of the rubber film, a number of permeable holes 100 are provided on the film, and the sheet-shaped rubber film opens along the expansion groove 12. 12a are provided at intervals. Certainly, the elastic reset structure 15 may also be in the shape of a strip. The elastic reset structure 15 provides a reset force for the expansion groove 12 . The elastic resetting structure 15 can also adopt other elastic existing materials in the prior art.

As shown in FIG. 5 , preferably, a water-permeable isolation layer 8 is provided at the opening 12 a of the expansion groove 12 and above the elastic reset structure 15 . Water-permeable isolation layer 8 can adopt geotextile, non-woven fabric or other cotton materials. A permeable barrier seals out soil and other impurities to prevent clogging.

As shown in FIG. 6 , as an alternative, a water-permeable isolation layer 8 may also be provided on the outer casing of the pipe body, and several water diversion strips 9 are arranged on the water-permeable isolation layer 8 . The permeable isolation layer 8 can isolate the soil and other impurities outside the pipe to prevent blockage; at the same time, the water diversion strip 9 can drain irrigation water to make the irrigation more uniform. Water-permeable isolation layer 8 and water diversion strip 9 can adopt geotextile, non-woven fabric or other cotton materials.

The surface of the drainage board 3 has several drainage holes 3a, and the bottom of the drainage board 3 is provided with several ribs 3b. Drain board 3 can get rid of excess water, prevent water accumulation, and excess water enters the recovery system and flows into the water tank for storage to facilitate repeated use and save water resources. The drainage board 3 can be made of high-density hard rubber or PE material, which has the characteristics of anti-aging, strong durability and high hardness.

The seepage irrigation pipe 1 has an outer diameter of 20 mm and an inner diameter of 16 mm, and is arranged at an interval of 20 cm, and is laid in the planting soil 100 within a depth range of 25-30 cm.

Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

Claims (7)

1. An environment-friendly and water-saving root seepage irrigation device for light greening, comprising a seepage irrigation pipe (1) and a water supply system connected to the seepage irrigation pipe (1), characterized in that: the seepage irrigation pipe (1) ) is provided with a U-shaped anti-seepage tank (2), the bottom of the anti-seepage tank (2) is provided with a first waterproof layer (2a), and the bottom of the anti-seepage tank (2) is sequentially provided with drainage boards (3), The second waterproof layer (4) and the root resistance layer (5), the seepage irrigation pipe (1) includes a pipe body, a water outlet channel (11) is formed along the length of the pipe body, and the water outlet channel (11) is formed along the pipe body One side of the pipe body (1) forms an expansion groove (12) with an opening (12a) to the outside of the pipe body (1), and the expansion groove (12) only has the opening (12a) to the outside of the pipe body, along the outlet channel (11) The other side forms a sealing edge (13) that can be attached to the outer wall of the expansion groove (12) to close the water outlet channel (11). The expansion body (14) where the outer wall of (12) is bonded to the sealing edge (13) is provided with several elastic reset structures (15) at the opening (12a) of the expansion groove (12). 2. The environmental protection and water-saving root infiltration irrigation device for light greening according to claim 1, characterized in that: the expansion tank (12) is in the shape of a round tube with an opening (12a) in the longitudinal direction as a whole, and The connection between the expansion groove (12) and the pipe body is located on one side of the expansion groove (12), and the sealing edge (13) is located below the opening (12a) of the expansion groove (12), and the length of the opening (12a) is about For sending out 1/5-1/3 of groove (12) perimeter. 3. The environmental-friendly and water-saving root infiltration device for light greening according to claim 1, characterized in that: the elastic reset structure (15) is an elastic tie bar or film. 4. The environmental protection and water-saving root infiltration irrigation device for light greening according to claim 1, characterized in that: at the opening (12a) of the expansion tank (12), above the elastic reset structure (15) A permeable isolation layer (8) is provided. 5. The environmental protection water-saving root infiltration irrigation device for light greening according to claim 1, characterized in that: a permeable isolation layer (8) is provided on the outer casing of the pipe body, and the permeable isolation layer (8) has Some water diversion strips (9). 6. The environmental protection and water-saving root seepage irrigation device for light greening according to any one of claims 1-5, characterized in that: the surface of the drainage board (3) has several drainage holes (3a), and the drainage board (3) The bottom of (3) is provided with several ribs (3b). 7. The environmental protection and water-saving root infiltration irrigation device for light greening according to any one of claims 1-5, characterized in that: the infiltration irrigation pipe (1) has an outer diameter of 20mm, an inner diameter of 16mm, and is arranged at intervals of 20cm , Laying in the planting soil within a depth of 25-30 cm.