CN203884348U - Pressure adjustable type underground negative-pressure infiltrating irrigation device - Google Patents

Abstract

The utility model discloses a pressure-adjustable underground negative pressure seepage irrigation device, which comprises a water delivery capillary, a water supply container and a pressure regulating pipe; There is a sealing cover on the mouth of the pressure regulating tube, and a sealing ring is provided on the through hole of the pressure regulating tube; both ends of the pressure regulating tube are open, and the pressure regulating tube passes through the through hole of the pressure regulating tube and the sealing ring; the water supply container is provided with a water outlet at the lower part of the side wall. The water outlet is provided with a control switch; one end of the water delivery capillary is closed, the other end is open, and a plurality of irrigation holes are opened on the side wall of the water delivery capillary, and the opening of the water delivery capillary is connected to the water outlet; The upper part or the top of the water supply container is provided with a one-way air suction nozzle, and an air pump is connected to the one-way air suction nozzle; the water filling hole is connected with a water delivery branch pipe. The utility model can utilize the suction force of the soil and the root system to automatically adjust the water output of the irrigation hole on the water delivery capillary, which not only meets the needs of crops, but also does not cause water waste and over-humid soil environment.

Description

Pressure-adjustable Underground Negative Pressure Seepage Irrigation Device

technical field

The utility model relates to the technical field of agricultural irrigation, in particular to a pressure-adjustable underground negative pressure seepage irrigation device. the

Background technique

At present, advanced agricultural water-saving irrigation technologies include sprinkler irrigation and micro-irrigation. The use of sprinkler irrigation is affected by meteorological conditions. In the arid and semi-arid areas of northern my country where the wind is strong, the evaporation and drift loss of water during the sprinkler irrigation process greatly reduces the water-saving effect of sprinkler irrigation. In addition, sprinkler irrigation requires greater pressure. The requirements are relatively high, and it is difficult to implement in some areas. The micro-irrigation system uses special equipment to turn the pressurized water flow into small water flow or water droplets, moistens the soil near the root layer of the crop, and has an ideal water-saving effect. And dripper and other parts, the equipment input price is high, and it is generally used in crops with high economic value, and it is difficult to implement the field application of general crops. the

At present, whether it is sprinkler irrigation or micro-irrigation, the water supply pressure is positive water head irrigation. After irrigation, part of the soil will reach water saturation, and then consume water in soil evaporation and crop transpiration, causing the soil to experience alternating wetting and drying. Excessive fluctuations in water will cause plants to suffer from drought and flood stress, increase the occurrence of diseases and insect pests, lead to waste of fertilizers and environmental pollution. The micro-irrigation system is generally in a pressurized state. When the system generates negative pressure for some reason, the emitter may be blocked due to the inhalation of soil particles and other substances. the

To sum up, the existing technology has problems such as large investment, large energy waste, low water utilization efficiency, and difficulty in negative pressure regulation. the

Utility model content

The technical problem solved by the utility model is to provide a pressure-adjustable underground negative pressure seepage irrigation device, which can use the suction of the soil and the root system to automatically adjust the water output of the irrigation hole on the water delivery capillary, which not only meets the needs of the crops, but also does not cause Water wastage and over-wet soil conditions. the

The technical scheme is as follows:

A pressure-adjustable underground negative pressure seepage irrigation device, comprising a water delivery capillary, a water supply container and a pressure regulating pipe; A sealing cover is provided, and a sealing ring is provided on the through hole of the pressure regulating tube; both ends of the pressure regulating tube are open, and the pressure regulating tube passes through the through hole of the pressure regulating tube and the sealing ring; the water supply container is on the side wall The lower part of the water outlet is provided with a water outlet, and a control switch is arranged on the water outlet; one end of the water delivery capillary is closed, and the other end is open, and a plurality of irrigation holes are opened on the side wall of the water delivery capillary. The opening of the water delivery capillary is connected to the water outlet; the upper part or the top of the water supply container is provided with a one-way air suction nozzle, and the one-way air suction nozzle is connected with an air pump; the water filling hole is connected with a water delivery hole. branch pipe. the

Further: the shape of the water supply container is a cylinder. the

Further: the sealing cover is provided with external threads, the water inlet is provided with internal threads, and the sealing cover is screwed on the water inlet. the

Compared with the prior art, the technical effects of the utility model include:

1. The realization of negative pressure is accomplished through pressure regulation, which overcomes the original limitation that the irrigation water source must be lower than or equal to the height of the emitter, making it easier to implement negative pressure irrigation. The biggest feature is to use the suction of the soil and roots to automatically adjust the water delivery The water output of the irrigation hole on the capillary not only meets the needs of the crops, but also does not cause water waste and over-humid soil environment, so that the water, fertilizer, air and heat of the soil in the root zone are kept in a better state, which is very important for promoting crop growth. Significant effects on the development and coordination of material distribution in both aboveground and belowground parts of crops;

2. The adjustment of negative pressure is flexible and convenient, and can be adjusted according to the water demand of crops in different growing seasons to meet the water demand of crops, saving equipment investment and energy;

3. Negative pressure irrigation is a point source local infiltration irrigation in the root zone of humid local crops, which avoids soil evaporation between crops and deep leakage in the root zone, improves the effectiveness of irrigation water, and greatly improves water resources. utilization efficiency;

4. The irrigation system is simple in structure, easy to use, manage and maintain, and saves labor. At the same time, it can dissolve fertilizers in water for irrigation with fertilizer and water, improve the utilization efficiency of fertilizers, and reduce pollution to soil and groundwater;

5. The irrigation method and system are especially suitable for areas with drought and water shortage, and have better effects on orchards, solar greenhouses, and greenhouse vegetables. the

Description of drawings

Fig. 1 is a diagram of the use state of the pressure-adjustable underground negative pressure seepage irrigation device in the utility model. the

Detailed ways

The technical scheme of the utility model is described in detail below with reference to the accompanying drawings and preferred embodiments. the

As shown in the figure, the usage state diagram of the pressure-adjustable underground negative pressure seepage irrigation device in the utility model. the

The structure of the pressure-adjustable underground negative pressure seepage irrigation device includes: irrigation hole 1, water delivery capillary 2, control switch 3, water outlet 4, water supply container 5, sealing cover 6, water inlet 7, pressure regulating tube 8, pressure regulating tube A through hole 9, a sealing ring 10 and a one-way suction nozzle 11; the water supply container 5 is an airtight container for holding water, and its top is provided with a water inlet 7 and a through hole 9 of a pressure regulating tube; the sealing cover 6 is arranged on the water inlet 7 , the water inlet 7 is used to inject water, and the sealing cover 6 is used to seal the water inlet 7; a sealing ring 10 is arranged on the through hole 9 of the pressure regulating tube, and the pressure regulating tube 8 passes through the through hole 9 of the pressure regulating tube and the sealing ring 10, Both ends of the pressure regulating tube 8 are open; the material of the sealing ring 10 is rubber, and the sealing ring 10 can seal the pressure regulating tube 8 while sliding up and down in the sealing ring 10; the water supply container 9 is on the side wall The lower part of the water outlet is provided with a water outlet 4, and a control switch 3 is arranged on the water outlet 4; one end of the water delivery capillary 2 is closed, and the other end is open, and a plurality of irrigation holes are opened on the side wall of the water delivery capillary 2 1; the opening of the water delivery capillary 2 is connected to the water outlet 4; the one-way air suction nozzle 11 is arranged on the upper part or the top of the water supply container 9, and the one-way air suction nozzle 11 is connected with an air extractor. the

The water supply container 5 can be in various shapes, and in the utility model, the shape of the water supply container 5 is a cylinder. Certainly, sealing cover 6 can be provided with external thread, and water inlet 7 is provided with internal thread, and sealing cover 6 is screwed on water inlet 7; In the utility model, the material of sealing cover 6 is rubber, utilizes the elasticity of rubber, and sealing cover 6 directly Cover on the water inlet 7. The water irrigation hole 1 can also be connected with a water delivery branch pipe to facilitate irrigation. the

Before irrigation, close the control switch 3, use a funnel or a pipe to inject water into the water supply container 5 through the water inlet 7, fill it to a predetermined position, cover the sealing cover 6, and use an air pump to supply water to the inside of the water supply container 9 through the air suction nozzle 11. Aspirate to create negative pressure. Adjust the position of the pressure regulating tube 8 according to the needs, and the end of the pressure regulating tube must be located under the water outlet 4, the height difference between the water outlet 4 and the end of the pressure regulating tube 8 is h, and the distance from the end of the pressure regulating tube 8 to the water surface The height is H, so the pressure of the water head difference is H-h. The size of the negative pressure can be read through the pressure regulating tube 8. When the negative pressure needs to be adjusted, move the pressure regulating tube 8 upward, and the external air enters the water supply container 9. When the negative pressure is adjusted to the set value, move the pressure regulating tube downward 8. Negative pressure adjustment is completed. the

Turn on the control switch 3, under the action of soil suction, the water in the water supply container 5 will infiltrate into the surrounding soil through the irrigation hole 1 until the potential energy balance is reached; the water content of the soil will gradually decrease with the transpiration of crops, and when the When the generated suction is greater than the negative pressure provided by the system, the soil starts to absorb water from the irrigation hole 1, and irrigation is performed periodically in this way. the

Claims (3)

1. the underground negative pressure seepage filling device of adjustable-pressure, is characterized in that: comprise water delivery hollow billet, water supply container and surge pipe; Described water supply container is closed container, and its top has water inlet and surge pipe through hole, on described water inlet, is provided with seal cover, on described surge pipe through hole, is provided with sealing ring; Described surge pipe both ends open, described surge pipe is through surge pipe through hole and sealing ring; Described water supply container is provided with delivery port in the bottom of sidewall, on described delivery port, is provided with gauge tap; An end of described water delivery hollow billet is airtight, and another is open-ended, has multiple water irrigating holes on the sidewall of described water delivery hollow billet, and the opening of described water delivery hollow billet is connected on described delivery port; Water supply container top or top are provided with unidirectional air exhaust nozzle, on described unidirectional air exhaust nozzle, are connected with air exhauster; Described water irrigating hole is connected with delivery pipe branch.

2. the underground negative pressure seepage filling device of adjustable-pressure as claimed in claim 1, is characterized in that: described water supply container be shaped as cylinder.

3. the underground negative pressure seepage filling device of adjustable-pressure as claimed in claim 1, is characterized in that: described seal cover is provided with external screw thread, described water inlet is provided with internal thread, and described seal cover is tightened on described water inlet.