CN219125011U

CN219125011U - Irrigation water circulation system for crop planting

Info

Publication number: CN219125011U
Application number: CN202222379548.4U
Authority: CN
Inventors: 樊江龙; 刘伟; 荆晶; 钱雷; 王诚
Original assignee: Shanghai Xinhong Ecological Agriculture Co ltd
Current assignee: Shanghai Xinhong Ecological Agriculture Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-06-06
Anticipated expiration: 2032-09-07

Abstract

The utility model discloses a crop planting irrigation water circulation system, wherein a cultivation groove is provided with a water inlet and a water outlet, and a drain pipe is connected to a recovery tank through a water return pipe; an active carbon layer is arranged above the recovery tank filter plate; a drainage part is arranged below the filter plate, the circulating water purification device comprises a permeable membrane filtration device and an ultraviolet disinfection device which are connected at the upstream and the downstream, and the ultraviolet disinfection device comprises a flowing water channel and an ultraviolet light generation device arranged in the flowing water channel; the pump connects the filtrate collecting space with the water inlet of the permeable membrane filtering device; the water inlet is connected with the water outlet of the ultraviolet disinfection device through a water inlet pipe. The application does not use chemical or biological treatment, only carries out recycling of the irrigation circulating water through physical treatment, and has no unpredictable influence of additional chemical substances or biological materials on crops; and the clarity of the recycled irrigation circulating water can be effectively improved, so that the ultraviolet disinfection effect is ensured, and the probability of the disease of the recycled irrigation circulating water is reduced.

Description

Irrigation water circulation system for crop planting

Technical Field

The utility model relates to a crop planting irrigation system, in particular to a crop planting irrigation water circulation system.

Background

The modern agricultural planting mode is not limited to the use of tools such as crops, cultivation tanks, planting beds and the like which are directly planted on the ground, so that the dependence of crop planting on the land is greatly reduced.

However, unlike the ground crop planting, the planting groove and other modes are used for planting crops, and the water absorption capacity and the water storage capacity of ground soil are not possessed, so that the dosage of irrigation water is not easy to control, the situation of excessive irrigation water is frequently encountered, and root system dysplasia and even root rot are caused.

For this reason, most of the cultivating tanks are provided with drain openings for draining the surplus water, but this causes waste of water. In addition, many times, nutrient solution or fertilizer and other agricultural products are added into irrigation water, if the irrigation water is directly discharged, the planting cost is increased, and the soil of the discharged land is polluted.

At present, a part of the prior art discloses a recovery scheme of irrigation water, such as an intelligent water and fertilizer integrated machine disclosed in CN114467463A, and water and fertilizer recovery can be realized; the cultivation method for cultivating the pepper seedlings disclosed in CN114568176A can also realize the recovery of irrigation water. However, after the irrigation water is recovered, many substances which are washed away from the matrix soil, including viruses, fungi, small particles and the like, possibly mixed in the irrigation water can not be reused, so that a relatively large pressure is brought to the recovery of the irrigation water; if the recovered water is subjected to chemical treatment (such as disinfectant, alum and the like), the mixed disinfectant can negatively affect the fragile crop root system, and K ions of the alum can not be removed, so that the calculation of the subsequent potash fertilizer application amount can be affected. Although the ultraviolet disinfection has a safety advantage, the disinfection effect is greatly affected by water quality, and the mode of ultraviolet disinfection cannot be directly used for the recovered irrigation water.

Disclosure of Invention

For the related problems of recycling and reusing crop irrigation water, the application provides a crop planting irrigation water circulation system.

The utility model provides a crop planting irrigation water circulation system, which comprises: the cultivation tank is provided with a water inlet and a water outlet, and the drain pipe is connected to the recovery tank through a water return pipe;

the recovery tank comprises a filter plate, the filter plate divides the recovery tank into an upper part and a lower part, and an active carbon layer is arranged above the filter plate; a drainage part is arranged below the filter plate and comprises a main body and a drainage channel in the main body, wherein the drainage channel is a linear inclined channel or a nonlinear channel; a filtrate collecting space is arranged at the downstream of the drainage part;

the circulating water purifying device comprises a permeable membrane filtering device and an ultraviolet sterilizing device which are connected at the upstream and the downstream, wherein the ultraviolet sterilizing device comprises a water flowing channel and an ultraviolet generating device arranged in the water flowing channel; the pump connects the filtrate collecting space with the water inlet of the permeable membrane filtering device; the water inlet is connected with the water outlet of the ultraviolet disinfection device through a water inlet pipe.

In a preferred embodiment, the circulating water purification apparatus further comprises an ion exchange apparatus, which may be connected between the ultraviolet disinfection apparatus and the permeable membrane filtration apparatus; or can also be connected after the ultraviolet disinfection device, and after the water outlet of the ultraviolet disinfection device enters the ion exchange device, the water inlet is connected.

In a preferred embodiment, the crop planting irrigation water circulation system further comprises a fertilizer liquid container, wherein the outlet water of the circulating water purification device is connected with two branch pipes, the first branch pipe is connected with the fertilizer liquid container, the outlet pipe of the fertilizer liquid container is connected with the water inlet pipe through a metering pump, and the second branch pipe is directly connected with the water inlet pipe; the first branch pipe and the second branch pipe are each independently provided with a switch valve.

In a preferred embodiment, the number of the fertilizer liquid containers is at least two, and each fertilizer liquid container is connected to the mixing buffer container through a respective metering pump independently, and the mixing buffer container is connected to the water pouring pipeline through a second pump.

In a preferred embodiment, after the first branch pipe is out of the mixing buffer container, a third branch pipe is also connected before the first branch pipe is connected to a watering pipeline, the third branch pipe is communicated with a nutrient solution pipeline, and the side wall of the nutrient solution pipeline is connected with a liquid injection needle for supplying liquid to substrate soil; the third branch pipe is independently provided with a switch valve.

In a preferred embodiment, the drainage channels may be circular pipes, square pipes, or pipes formed by the drainage plates at intervals.

In a preferred embodiment, the linear inclined channel is inclined at an angle (from vertical) of at least 30 °.

In a preferred embodiment, the drainage channels are formed by the drainage plates at intervals, the drainage plates are obliquely arranged, the surfaces of the drainage plates are provided with transverse circular arc-shaped bulges, the span is not lower than 20cm, and the height is not higher than 5cm.

In a preferred embodiment, a second filter plate is also provided downstream of the filtrate collecting space below the drainage channel.

In a preferred embodiment, the filtrate collecting space is located at the side of the flow guiding part; and a transverse diversion trench is arranged below the second filter plate and is communicated with the bottom of the filtrate collecting space through a third filter plate.

The filter plate and the second filter plate can be integrated with the drainage part to form a whole module, or can be detachably arranged on the drainage part.

The application will not use chemical or biological treatment, only carry out the recycle of irrigation circulating water through physical treatment, have no extra chemical substance or biological material to cause unpredictable influence to crops.

This application effectively improves the clarity of the irrigation circulating water of retrieving to ensure ultraviolet disinfection effect, reduce the probability of the irrigation circulating water of retrieving and spread the disease.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of a crop planting irrigation water circulation system according to the present utility model;

FIG. 2 is a schematic view of a recovery tank structure in an embodiment of a crop planting irrigation water circulation system according to the present utility model;

FIG. 3 is a schematic structural view of a second embodiment of the crop planting irrigation water circulation system of the present utility model.

Detailed Description

Example 1

As shown in fig. 1, the crop planting irrigation water circulation system of the present embodiment includes: the cultivation tank 5, the recovery tank 1, the circulating water purifying device and the pump, the cultivation tank 5 is provided with a water inlet and a water outlet, and the water outlet pipe 52 is connected to the recovery tank 1 through a water return pipe.

Referring to fig. 1, the circulating water purifying device comprises a permeable membrane filtering device 2, an ion exchange device 3 and an ultraviolet sterilizing device 4 which are connected at the upstream and downstream, wherein the ultraviolet sterilizing device 4 comprises a water flowing channel and an ultraviolet generating device arranged in the water flowing channel. The water inlet of the cultivation groove 5 is connected with the water outlet of the ultraviolet disinfection device 4 through a water inlet pipe 51.

Referring to fig. 2, the recovery tank 1 includes a filter plate 12, the filter plate 12 divides the recovery tank 1 into an upper portion and a lower portion, an activated carbon layer 11 is disposed above the filter plate 12, and a circulating water inlet portion 10 is disposed above the activated carbon layer 11; below the filter sheet 12, a drainage portion 13 is provided. The drainage portion 13 includes a main body and a drainage channel 15 in the main body, in this embodiment, the drainage channel 15 is a linear inclined channel, and the inclination angle of the linear inclined channel is at least 30 °.

The side wall of the recovery tank 1 is provided with a support column 14, a drainage part 13 with a T-shaped section is erected on the support column 14, a space is formed between the drainage part and the bottom of the recovery tank 1, and a second filter plate 16 is arranged in the space below the drainage channel 15. The filtrate collecting space 19 is located at the side of the flow guiding part 13, below the second filter plate 16, a transverse flow guiding groove 17 is arranged, and the transverse flow guiding groove 17 is communicated with the bottom of the filtrate collecting space 19 through a third filter plate 18. The second filter plate 16 and the drainage portion 13 may be integrated into a single module. The filter plate 12 may be integrated with the drainage portion 13 to form an integral module.

The pump connects the filtrate collecting space 19 with the water inlet of the osmotic membrane filter device 2.

If the irrigation water in the cultivation tank 5 is too much, the irrigation water is returned to the recovery tank 1 through the water return pipe, and specifically, the irrigation water can be recovered into the recovery tank 1 by gravity by setting the recovery tank 1 lower than the cultivation tank 5. Since the recycled water is mixed with a large amount of particles, germs and the like which are washed out from the substrate soil, the recycled water needs to be treated, particularly disinfection treatment, and ultraviolet disinfection is a feasible method, but the existence of the particles can seriously influence the clarity of the water, and the ultraviolet disinfection effect is poor.

In this embodiment, in the recovery tank 1, particles (including solid particles or colloid, etc.) are adsorbed by the activated carbon layer 11, so that the water quality can be improved, after the filter plate 12 filters, the water enters the inclined diversion channel 15, and under the diversion effect, the water flows more smoothly, so that the turbulence can be well avoided to wrap the microparticles above the filter plate. If the wrapped microparticles exist, a precipitation process can be performed through gentle diversion, filtration is performed through the second filter plate 18, diversion is performed again through the transverse diversion groove 17 below, and the particles are removed as much as possible through diversion and filtration after entering the filtrate collecting space 19 through the third filter plate 18.

Normally, the water is not too much recovered each time, so that the water is kept in the filtrate collecting space 19 for a period of time, i.e. the water in the diversion channel 15 and the transverse diversion trench 17 is stationary most of the time, and only flows when the water is recovered in the filtrate collecting space 19 in a non-water state or the filtrate collecting space 19 is supplied with water outwards, and precipitation is formed, so that the particles are precipitated. The diversion can avoid disturbance and turbulence of the water and can avoid the precipitated particles from being disturbed into the water as much as possible, thereby ensuring the clarity of the water sent out by the filtrate collecting space 19.

The water sent out from the filtrate collecting space 19 is filtered by a permeable membrane and ion-exchanged, so that the hardness of smaller particles and conditioned water is further reduced. Is ready for subsequent ultraviolet disinfection. The sterilized water may be directly fed into the inlet pipe 51 for irrigation.

Example 2

In this embodiment, as shown in fig. 3, the water treated by the ultraviolet disinfection device 4 is divided into two branch pipes, the second branch pipe 82 is directly connected with the water inlet pipe 51 through a valve, the first branch pipe 81 is connected with the fertilizer liquid container 6 through a valve, the first branch pipe 81 is mixed with the fertilizer to be applied in the fertilizer liquid container 6 to form a nutrient solution, the metering pump sends the nutrient to the nutrient solution mixing buffer container 7, and then the nutrient solution is sent to the water inlet pipe 51 through another valve and a second pump, so that if fertilizer is applied in the irrigation process, the nutrient solution can be directly prepared by using circulating water.

The fertilizer liquid container 6 may be plural, as in the case of two fertilizer liquid containers 6 shown in fig. 3. Each fertilizer liquid container 6 is supplied with liquid to the water inlet pipe 51 by a metering pump.

For the case that fertilization is only needed and irrigation is not needed, after the first branch pipe 82 passes through the fertilizer liquid container 6, the first branch pipe is connected to the nutrient solution mixing buffer container 7 through the third valve before the other valve, the nutrient solution mixing buffer container 7 is connected with a nutrient solution pipeline through the third branch pipe 83 and the third pump, and the side wall of the nutrient solution pipeline is connected with a liquid injection needle for supplying liquid to substrate soil.

Example 3

Unlike embodiment 1, in this embodiment, the drainage channels are formed by the drainage plates at intervals, the drainage plates are arranged obliquely, and the surfaces of the drainage plates are provided with transverse circular arc-shaped protrusions, the span is not less than 20cm, and the height is not more than 5cm. Thereby forming a corrugated drainage plate or drainage channel. The smooth corrugations may further act as a deposition.

The above description of the specific embodiments of the present utility model has been given by way of example only, and the present utility model is not limited to the above described specific embodiments. Any equivalent modifications and substitutions for the present utility model will occur to those skilled in the art, and are also within the scope of the present utility model. Accordingly, equivalent changes and modifications are intended to be included within the scope of the present utility model without departing from the spirit and scope thereof.

Claims

1. Irrigation water circulation system is planted to crops, its characterized in that includes: the cultivation tank is provided with a water inlet and a water outlet, and the drain pipe is connected to the recovery tank through a water return pipe; the recovery tank comprises a filter plate, the filter plate divides the recovery tank into an upper part and a lower part, and an active carbon layer is arranged above the filter plate; a drainage part is arranged below the filter plate and comprises a main body and a drainage channel in the main body, wherein the drainage channel is a linear inclined channel or a nonlinear channel; a filtrate collecting space is arranged at the downstream of the drainage part;

the circulating water purifying device comprises a permeable membrane filtering device and an ultraviolet sterilizing device which are connected at the upstream and the downstream, wherein the ultraviolet sterilizing device comprises a water flowing channel and an ultraviolet generating device arranged in the water flowing channel;

the pump connects the filtrate collecting space with the water inlet of the permeable membrane filtering device; the water inlet is connected with the water outlet of the ultraviolet disinfection device through a water inlet pipe.

2. The system of claim 1, wherein the circulating water purification apparatus further comprises an ion exchange apparatus connectable between the ultraviolet disinfection apparatus and the permeable membrane filtration apparatus; or alternatively

The water inlet is connected with the water inlet after the water outlet of the ultraviolet disinfection device enters the ion exchange device.

3. The system of claim 1, wherein the crop planting irrigation water circulation system further comprises a fertilizer liquid container, wherein the outlet water of the circulating water purification device is connected to two branch pipes, the first branch pipe is connected to the fertilizer liquid container, the fertilizer liquid container outlet pipe is connected to the water inlet pipe through a metering pump, and the second branch pipe is directly connected to the water inlet pipe; the first branch pipe and the second branch pipe are each independently provided with a switch valve.

4. A system according to claim 3, wherein the number of the fertilizer liquid containers is at least two, each fertilizer liquid container being connected independently to the mixing buffer container by a respective metering pump, the mixing buffer container being connected to the watering line by a second pump.

5. The system of claim 4, wherein after the first branch pipe is out of the mixing buffer container, a third branch pipe is further connected before the first branch pipe is connected to the watering pipeline, the third branch pipe is communicated with a nutrient solution pipeline, and the side wall of the nutrient solution pipeline is connected with a liquid injection needle for supplying liquid to the substrate soil; the third branch pipe is independently provided with a switch valve.

6. The system of claim 1, wherein the drainage channels are formed by the drainage plates at intervals, the drainage plates are obliquely arranged, and the surfaces of the drainage plates are provided with transverse circular arc-shaped bulges, the span is not lower than 20cm, and the height is not higher than 5cm.

7. The system of claim 1, wherein the linear inclined channel is inclined at an angle of at least 30 °.

8. The system of claim 1, 6 or 7, wherein a second filter plate is further provided below the drainage channel and above the filtrate collecting space.

9. The system of claim 8, wherein the filtrate collection space is located on a side of the diversion section;

and a transverse diversion trench is arranged below the second filter plate and is communicated with the bottom of the filtrate collecting space through a third filter plate.

10. The system of claim 1, wherein the filter plate is integrated with the drain to form a unitary module.