CN111919725A - Low-pressure gravity infiltration irrigation system suitable for northwest arid region and use method thereof - Google Patents

Abstract

The invention discloses a low-pressure gravity infiltration irrigation system suitable for the northwest arid region in the technical field of water conservancy engineering and a method for using the same, comprising a filter screen and a pressure-stabilized water storage tank. , the filter screen is fixed on the water inlet port of the water diversion pipe, and the maintenance valve is installed on the water diversion pipe. The distribution spacing and distribution number of capillary tubes are selected according to the type of irrigation vegetation; the whole system does not need to consume energy, and the irrigation pressure is provided by the pressure difference generated by the terrain drop. Reasonable distribution of the pressure-stabilizing water storage tank can meet the working pressure range, and the water output of the irrigation dripper connected with the capillary is uniform; the invention can meet the water demand of various types of vegetation in ecological restoration, improve the survival rate, and reduce the cost of ecological restoration for system operation. All equipment Work in low pressure state, reduce equipment investment, fully bury the equipment in the soil layer to reduce solar radiation and contact with air to prevent aging, prolong the service life of the equipment, and be green and environmentally friendly.

Description

Low-pressure gravity infiltration irrigation system adapted to the arid region of Northwest China and its use method

technical field

The invention relates to the technical field of water conservancy engineering, in particular to a low-pressure gravity infiltration irrigation system adapted to the arid regions of northwest China and a method for using the same.

Background technique

Infiltration irrigation technology is one of the effective measures in modern water-saving irrigation. It and micro-sprinkler irrigation technology both belong to the category of micro-irrigation technology. To the irrigation area, it can directly reach the soil surface or soil layer near the roots of the crops, so that the soil around the roots of the vegetation can continue to maintain good moisture, ventilation and nutritional status, so as to ensure the growth of the vegetation. Advantage. Low-pressure gravity infiltration irrigation requires less water and has obvious water-saving effect. The pipeline is buried in the soil to avoid direct sunlight to improve durability. Gravity low-pressure infiltration irrigation only needs to use the terrain reasonably and does not need to consume other energy to pressurize. It is energy-saving and environmentally friendly, and conforms to the ecological restoration environment. and dynamic conditions required.

In recent years, scholars and experts from various countries have mainly studied and promoted infiltration irrigation technology in the fields of economic forest and facility agriculture, and have achieved many results. After the introduction of the infiltration irrigation technology, my country has also carried out a large number of field experiments. The effect of increasing crop yield and saving water is also very significant. Now the infiltration irrigation technology is also widely used in my country. In the process of economic development, a large number of construction projects disturb the original soil, and there are more and more needs to restore vegetation to protect the ecology after completion. The methods such as flood irrigation, sprinkler irrigation and drip irrigation are currently used to ensure the improvement of the survival rate of vegetation and the speed of recovery. In the prior art, there are problems such as complex system, large energy consumption, high management and maintenance cost and short service life. Based on this, the present invention designs a low-pressure gravity infiltration irrigation system suitable for the northwest arid region and its use method to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a low-pressure gravity infiltration irrigation system suitable for the northwest arid region and its use method, so as to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: a low-pressure gravity infiltration irrigation system adapted to the northwest arid region, including a filter screen and a pressure-stabilized water storage tank, the upper left water inlet of the pressure-stabilized water storage tank is fixed with a guide. The water pipe, the filter screen is fixed on the water inlet port of the water lead pipe, the maintenance valve is installed on the water lead pipe, the floating plate valve is installed on the inner side of the water inlet of the pressure-stabilized water storage tank, and the pressure-stabilized water storage tank is installed with a floating plate valve. The water inlet of the water inlet is opposite to the bottom, and a sand accumulating tank is arranged. The sand accumulating tank adopts a U-shaped groove. The bottom of the sand accumulating tank is connected with a sand flushing port. The inner wall of the pressure-stabilizing water storage tank is provided with an overflow port on the upper part of the sand flushing port, an overflow pipe is installed on the overflow port, and the lower part of the overflow pipe is between the sand flushing pipe connected to the outside of the sand flushing valve. A three-way pipe is connected, and the other end of the three-way pipe is connected to the pipeline to extend directly to the river channel or drainage channel. A filter screen partition is arranged in the middle of the water outlet, a main pipe is connected to the water outlet, a control valve is installed on the main pipe near the pressure-stabilizing water storage tank, the other end of the main pipe is connected with a branch pipe, and the branch pipe is connected to the main pipe. A capillary pipe with an irrigator is connected, and the water diversion pipe, maintenance valve, control valve, main pipe, branch pipe, capillary pipe and three-way pipe are all made of PVC material.

Further, the filter screen adopts a tubular filter screen and is connected to the water diversion pipe with a flange.

Further, the water inlet of the pressure-stabilized water storage tank is threadedly connected to the floating plate valve, the inner side of the water inlet of the pressure-stabilized water storage tank is installed with a rubber water seal ring, and the pressure-stabilized water storage tank and its bottom flush sand. The outlet and the overflow port on the side are connected by threads, and a rubber water seal is installed at the connection.

Further, fusion welding is used between the sand flushing valve, the tee pipe and the pipeline, fusion welding is used between the control valve and the main pipe, fusion welding is used between the main pipe, the branch pipe and the capillary pipe, The capillary tube and the irrigator are connected by a jack-type quick installation method.

Further, the inner wall of the pressure-stabilizing water storage tank is provided with a notch for installing the filter grid plate, and both sides of the notch are provided with buckles.

A method for using a low-pressure gravity infiltration irrigation system adapted to the arid region of northwest China, comprising the following steps:

S1: Use the terrain to directly draw water from the water source, the water diversion pipe with the filter screen is connected to the water source, and then the water diversion pipe is connected to the stabilized water storage tank;

S2: An inspection valve is set at the connection between the water diversion pipe and the stabilizing water storage tank. The water inlet of the stabilizing water storage tank is installed with a floating plate valve that controls the water level of the stable stabilizing water storage tank. The valve body of the floating plate valve is a ball valve, and the connecting rod and the floating plate Board connection, floating board adopts metal hollow box structure design, self-weight 2kg;

S3: Set up a sand storage tank at the bottom of the water inlet of the pressure-stabilized water storage tank. The sand storage tank adopts a U-shaped groove, and the bottom of the bottom is connected to the sand flushing port. A sand flushing valve is set outside to control the opening and closing of the sand flushing port, and the sand flushing valve The connecting pipe extends directly to the river or drain;

S4: When the pressure-stabilizing water storage tank is above the control water level, an overflow port is set on the upper part of the sand flushing port to prevent the failure of the control valve from damaging the pressure-stabilizing water storage tank. The lower part of the overflow pipe connected to the overflow port is outside the sand flushing valve. A tee pipe is connected between the connected sand flushing pipes;

S5: Set up a filter screen partition between the water inlet and outlet of the regulated water storage tank, divide the regulated water storage tank into two sides, one side of the water inlet accounts for two-thirds, and the water outlet is set at a height from the bottom of the regulated water storage tank 10cm, a control valve is installed at the water outlet connecting to the main pipe, and the controller adopts a ball valve;

S6: The main pipe is extended so that the water head reaches about 5m, and the branch pipe is connected. The direction of the branch pipe and the capillary pipe is arranged along the slope, and it is adjusted according to the terrain on the project site to ensure uniform water output.

Compared with the prior art, the beneficial effects of the present invention are: because the working pressure of the present invention is only 5-10m water head, the material used for the components is mainly PVC, the cost is low, the construction is simple, energy saving and environmental protection; the versatility of each component is extremely strong. And easy to identify, so the installation and disassembly are simple, not easy to make mistakes, and easy to ensure the construction quality; seepage irrigation is 10cm infiltration, 20cm infiltration, there is no deep leakage loss and surface evaporation loss, and the water resource utilization rate is increased by 30%; no pump is required. Pressure, only need to use the terrain drop, energy saving and environmental protection; simple structure, high use value, flexible installation can be connected in series or parallel, stable pressure, uniform water output; because the water is 10cm below the surface, the soil is not compacted, and the air permeability is good , the later management cost is low; the overall system is covered with soil and buried underground, which can reduce land occupation, facilitate traffic and construction operations, slow aging speed, can be used for a long period of time, and do not need to replace pipes; the amount of vegetation irrigation can be based on the number of irrigators. And arrangement density adjustment, adapt to a wide range.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

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

Fig. 2 is a top view of the interior of the pressure-stabilized water storage tank in Fig. 1;

FIG. 3 is a right side view of the interior of the stabilized water storage tank in FIG. 1 .

In the accompanying drawings, the list of components represented by each number is as follows:

1- filter screen, 2- water intake pipe, 3- maintenance valve, 4- stabilized water storage tank, 5- floating plate valve, 6- control valve, 7- main pipe, 8- branch pipe, 9- capillary pipe, 10- flush Sand port, 11-sand flush valve, 12-water outlet, 13-filter grid plate, 14-overflow port, 15-tee pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

Please refer to Figures 1-3, the present invention provides a technical solution: a low-pressure gravity infiltration irrigation system adapted to the northwest arid region, including a filter screen 1 and a pressure-stabilized water storage tank 4, and the upper left side of the pressure-stabilized water storage tank 4 is filled with water A water diversion pipe 2 is fixed on the mouth, a filter screen 1 is fixed on the water inlet port of the water diversion pipe 2, a maintenance valve 3 is installed on the water diversion pipe 2, and a floating plate valve 5 is installed on the inner side of the water inlet of the pressure-stabilizing water storage tank 4 to stabilize the pressure. The water inlet of the water storage tank 4 is arranged with a sand accumulating tank facing the bottom, and the sand accumulating tank adopts a U-shaped groove. , the inner wall of the pressure-stabilizing water storage tank 4 is provided with an overflow port 14 on the upper part of the sand flushing port 10, an overflow pipe is installed on the overflow port 14, and the lower part of the overflow pipe is connected with the sand flushing pipe outside the sand flushing valve 11 There is a tee pipe 15 connected between them, and the other end of the tee pipe 15 is connected to the pipeline to extend directly to the river channel or the drainage channel. A filter screen partition 13 is arranged in the middle of the water outlet 12, a main pipe 7 is connected to the water outlet 12, a control valve 6 is installed on the main pipe 7 near the pressure-stabilizing water storage tank 4, and the other end of the main pipe 7 is connected with a branch pipe 8, the branch pipe 8 is connected with a capillary 9 with an irrigator, the water diversion pipe 2, the maintenance valve 3, the control valve 6, the main pipe 7, the branch pipe 8, the capillary 9 and the tee pipe 15 are all made of PVC material.

Among them, the filter screen 1 adopts a tubular filter screen and is connected with the water diversion pipe 2 by a flange. The filter screen 1 is used to prevent impurities in the water source from entering the water diversion pipe 2, and the two are connected by a flange, which is convenient for maintenance.

The water inlet of the stabilizing water storage tank 4 is threadedly connected with the floating plate valve 5, the inner side of the water inlet of the stabilizing water storage tank 4 is installed with a rubber water seal ring, the stabilizing water storage tank 4 and the sand flushing port 10 at the bottom and the side surface The overflow port 14 is connected by a thread and a rubber water seal is installed at the connection, and the pressure-stabilizing water storage tank 4 is connected with the water outlet 12 on the lower right side by a thread, and a rubber water seal is installed at the connection, which is convenient for installation, disassembly and maintenance. .

The sand flushing valve 11, the three-way pipe 15 and the pipeline are connected by fusion welding, the control valve 6 and the main pipe 7 are connected by fusion welding, the main pipe 7, the branch pipe 8 and the capillary tube 9 are connected by fusion welding, and the capillary tube 9 is connected by fusion welding. It is connected with the irrigator by a jack-type quick installation method. When it needs to be replaced and repaired, close the maintenance valve 3 and open the sand flushing valve 11 to empty the stabilized water storage tank 4.

The inner wall of the stabilized water storage tank 4 is provided with a notch for installing the filter mesh plate 13, and both sides of the notch are provided with buckles, which are used to prevent displacement, and also facilitate the cleaning and replacement of the filter mesh plate 13 in the later maintenance. .

A method for using a low-pressure gravity infiltration irrigation system adapted to the arid region of northwest China, comprising the following steps:

S1: Use the terrain to directly draw water from the water source. Depending on the water source, the water intake method is different. It is designed separately according to the water source conditions and terrain. The diversion pipe is connected with the water source, and then the diversion pipe is connected with the pressure-stabilized water storage tank;

S2: The connection between the water diversion pipe and the stabilized water storage tank is welded and connected to the maintenance valve. The maintenance valve adopts a ball valve, which is convenient for controlling the water flow during equipment maintenance and maintenance. The design of the stabilized water storage tank can not only ensure the stable working water pressure of the system, but also store water To meet the water shortage condition of the water source, the irrigation will not be interrupted. The water inlet of the stabilized water storage tank is equipped with a floating plate valve to control the water level of the stabilized water storage tank. The valve body of the floating plate valve is a ball valve, which is connected with the floating plate by a connecting rod. Metal hollow box structure design, self-weight 2kg. During the installation of floating plate valve, it is necessary to set the limiter according to the water level control height of the stabilized water tank to prevent the water level from being too high and destroying the floating plate valve and making the water level control invalid. The self-weight must be sufficient to drive the valve. Downward opening, set according to the size of the stabilized water storage tank, the floating plate is a cavity, and the buoyancy meets the needs of closing the valve upwards. The size of the stabilized water storage tank is set according to the water cutoff time of the water source and the irrigation water demand, which can meet the irrigation rate of 75%, when the space If it is too large, ribs can be added to improve the strength;

S3: After the above water is injected into the stabilized water storage tank through the floating plate valve, due to the decrease of the flow rate, it will carry sand and gravel to settle. A sand storage tank is set at the water inlet of the stabilized water storage tank. The sand storage tank adopts a U-shaped groove, and the bottom is the most The sand washing port is connected to the bottom, and the sand washing valve is set outside to control the opening and closing of the sand washing port. The connecting pipeline of the sand washing valve directly extends to the river or drainage channel, and the sand can be discharged regularly or according to the amount of sediment;

S4: When the pressure-stabilizing water storage tank is higher than the control water level, set an overflow port on the upper part of the sand flushing port to prevent the failure of the control valve from damaging the pressure-stabilizing water storage tank. At the same time, if the water level is higher than the control water level due to uncertain factors, In order to prevent overflow of the stabilized water storage tank, a tee pipe is connected between the lower part of the overflow pipe connected to the overflow outlet and the sand flushing pipe connected outside the sand flushing valve, and the other end of the tee pipe extends to the river or drainage channel through the pipeline;

S5: Set up a filter screen partition between the water inlet and outlet of the regulated water storage tank, divide the regulated water storage tank into two sides, one side of the water inlet accounts for two-thirds, and the water outlet is set at a height from the bottom of the regulated water storage tank 10cm, prevent sediment from being brought into the pipeline, install a control valve at the water outlet connecting the main pipe, the controller adopts a ball valve to control the intensity of irrigation and improve the irrigation efficiency. The water flow state is disturbed, the water flow of the water storage tank is stabilized, and the flow state of the pipeline is kept stable;

S6: The main pipe is extended so that the water head reaches about 5m and then the branch pipe is connected. The direction of the branch pipe and the capillary pipe is arranged along the slope. Adjust according to the terrain on the project site to ensure uniform water output. The infiltration is 20cm, the water is 10cm below the surface, and the overall system is covered with soil and buried underground.

In the description of this specification, description with reference to the terms "one embodiment," "example," "specific example," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one aspect of the present invention. in one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-disclosed preferred embodiments of the present invention are provided only to help illustrate the present invention. The preferred embodiments do not exhaust all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the contents of this specification. These embodiments are selected and described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is to be limited only by the claims and their full scope and equivalents.

Claims (6)

1. Adapt to low pressure gravity filtration irrigation system in northwest arid area, including filter screen (1) and steady voltage water storage box (4), its characterized in that: a water conduit (2) is fixed on the upper water inlet on the left side of the pressure stabilizing water storage tank (4), the filter screen (1) is fixed on the water inlet port of the water conduit (2), an overhaul valve (3) is installed on the water conduit (2), a floating plate valve (5) is installed on the inner side of the water inlet of the pressure stabilizing water storage tank (4), a sand accumulation groove is formed right in the bottom of the water inlet of the pressure stabilizing water storage tank (4), the sand accumulation groove adopts a U-shaped groove, the bottommost part of the bottom of the sand accumulation groove is connected with a sand flushing port (10), a sand flushing valve (11) is arranged outside the sand flushing port (10), an overflow port (14) is formed in the inner wall of the pressure stabilizing water storage tank (4) and the upper part of the sand flushing port (10), an overflow pipe is installed on the overflow port (14), a three-way pipe (15) is connected between the lower part of the overflow pipe and a sand flushing pipeline externally, the water pipe is characterized in that the other end of the three-way pipe (15) is connected with a pipeline and directly extends to a river channel or a drainage channel, a water outlet (12) is formed in the lower portion of the right side of the pressure stabilizing water storage tank (4), a filter screen partition plate (13) is arranged between the water inlet and the water outlet (12) of the pressure stabilizing water storage tank (4), a main pipe (7) is connected onto the water outlet (12), a control valve (6) is installed on the main pipe (7) close to the pressure stabilizing water storage tank (4), the other end of the main pipe (7) is connected with a branch pipe (8), a capillary (9) with a douche is connected onto the branch pipe (8), and the water pipe (2), the maintenance valve (3), the control valve (6), the main pipe (7), the branch pipe (8), the capillary (9) and the.

2. The low pressure gravity filtration irrigation system adapted to northwest arid region of claim 1, wherein: the filter screen (1) adopts a tubular filter screen and is connected with the water conduit (2) by a flange.

3. The low pressure gravity filtration irrigation system adapted to northwest arid region of claim 1, wherein: the water inlet and the kickboard valve (5) threaded connection of steady voltage water storage box (4), the rubber water seal circle is installed to the water inlet inboard of steady voltage water storage box (4), steady voltage water storage box (4) pass through threaded connection and install the rubber water seal circle in the junction with sand washing mouth (10) and the overflow mouth (14) of side of its bottom, steady voltage water storage box (4) pass through threaded connection and install the rubber water seal circle in the junction with delivery port (12) of its right side lower part.

4. The low pressure gravity filtration irrigation system adapted to northwest arid region of claim 1, wherein: the sand flushing valve (11), the three-way pipe (15) and the pipeline are connected through fusion welding, the control valve (6) and the main pipe (7) are connected through fusion welding, the main pipe (7), the branch pipe (8) and the capillary pipe (9) are connected through fusion welding, and the capillary pipe (9) and the emitter are connected through a jack type quick installation mode.

5. The low pressure gravity filtration irrigation system adapted to northwest arid region of claim 1, wherein: the inner wall of the pressure stabilizing water storage tank (4) is provided with a notch for installing the filtering grid plate (13), and both sides of the notch are provided with buckles.

6. Use method of a low pressure gravity infiltration irrigation system adapted to northwest arid region based on any one of claims 1 to 5, characterized by comprising the following steps:

s1: directly taking water from a water source by utilizing the terrain, communicating a water conduit with a filter screen with the water source, and then connecting the water conduit with a pressure-stabilizing water storage tank;

s2: the joint of the water conduit and the pressure-stabilizing water storage tank is provided with an overhaul valve, a water inlet of the pressure-stabilizing water storage tank is provided with a floating plate valve for controlling the water level of the pressure-stabilizing water storage tank, a valve body of the floating plate valve is a ball valve and is connected with a floating plate by a connecting rod, and the floating plate adopts a metal hollow box body structure design and has the self weight of 2 kg;

s3: a sand accumulation groove is arranged right opposite to the bottom of the water inlet of the pressure stabilizing water storage tank, the sand accumulation groove adopts a U-shaped groove, the bottommost part of the bottom is connected with a sand washing port, a sand washing valve is arranged outside to control the opening and closing of the sand washing port, and a sand washing valve connecting pipeline directly extends to a river channel or a drainage channel;

s4: the overflow pipe is connected with the sand washing pipeline outside the sand washing valve;

s5: a filter screen partition plate is arranged between a water inlet and a water outlet of the pressure-stabilizing water storage tank, the pressure-stabilizing water storage tank is divided into two sides, one side of the water inlet accounts for two thirds, the height of the water outlet is 10cm away from the bottom of the pressure-stabilizing water storage tank, a control valve is arranged at the position of the water outlet connected with a main pipe, and a ball valve is adopted as a controller;

s6: the extension of the main pipe enables a water head to reach about 5m and then the branch pipe is connected, the arrangement directions of the branch pipe and the capillary pipe are all along the slope, the branch pipe and the capillary pipe are adjusted according to the terrain on the spot in the engineering, and the uniform water outlet is ensured.

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