CN206866249U - Cylindrical drip irrigation tube and agricultural greenhouse system are inlayed outside pressure-compensated - Google Patents

Abstract

The utility model discloses a pressure-compensating drip irrigation pipe and an agricultural greenhouse system. The pressure-compensated outer cylindrical drip irrigation pipe includes a water pipe with multiple water outlets and a plurality of cylindrical drippers. The middle part of the inner tube wall of the cylindrical dripper is formed with a spiral groove. The inner tube of the cylindrical dripper The end of the wall is formed with an annular groove, and a silicone cylinder is arranged in the annular groove, and a plurality of through holes are opened on the silicone cylinder, and a stable pressure outflow cavity is formed between the outer wall of the silicone cylinder and the annular groove, and the cylinder The outer wall of the dripper is provided with a drainage hole that communicates with the pressure-stabilized outflow cavity. The cylindrical dripper is set outside the water pipe, and a spiral buffer channel is formed between the spiral groove and the outer wall of the water pipe. The inner wall of the silicone cylinder A pressure regulating cavity is formed between the outer pipe wall of the water pipe, and the pressure regulating cavity communicates with the spiral buffer channel. Realize the improvement of the use reliability of the pressure-compensated outer cylindrical drip irrigation pipe.

Description

Pressure-compensated external cylindrical drip irrigation pipe and agricultural greenhouse system

technical field

The utility model relates to the technical field of irrigation of agricultural greenhouse systems, in particular to a pressure compensation type externally inlaid cylindrical drip irrigation pipe and an agricultural greenhouse system.

Background technique

At present, the planting technology of the agricultural greenhouse system has been widely promoted, and the agricultural greenhouse system combined with the drip irrigation technology has become the current trend of green and environmentally friendly agricultural development. The drip irrigation pipe is generally laid on the surface of the greenhouse. The drip irrigation pipe usually includes a water pipe and a dripper. The dripper is arranged on the inner wall of the water pipe. A turbulent flow channel is formed between the dripper and the water pipe. out of the water outlet. However, in the actual use process, because the drip irrigation pipe touches the ground, the sediment is easy to enter the water outlet, and the turbulent flow channel of the dripper is easy to be removed from the outlet due to its small size and many detours, corners, and dead ends. The silt that enters the water port is clogged, which causes the dripper to fail, and the corresponding crops cannot obtain sufficient water supply, which affects the growth, resulting in low reliability of the drip irrigation pipe. How to design a drip irrigation pipe with high reliability is the technical problem to be solved by the utility model.

Utility model content

The technical problem to be solved by the utility model is to provide a pressure-compensated drip irrigation pipe and an agricultural greenhouse system to improve the reliability of the pressure-compensated drip irrigation pipe.

The technical solution provided by the utility model is: a pressure-compensated outer cylindrical drip irrigation pipe, including a water pipe, a plurality of water outlets are opened on the water pipe, and a plurality of cylindrical drippers, the inner tube of the cylindrical dripper A spiral groove is formed in the middle of the wall, and an annular groove is formed at the end of the inner tube wall of the cylindrical dripper. A silica gel cylinder is arranged in the annular groove, and a plurality of through holes are opened on the silica gel cylinder. A pressure-stabilizing outflow cavity is formed between the outer wall of the silica gel cylinder and the annular groove, and a drain hole communicating with the pressure-stabilizing outflow cavity is opened on the outer wall of the cylindrical dripper. The cylindrical dripper is set on the outside of the water pipe, a spiral buffer channel is formed between the spiral groove and the outer pipe wall of the water pipe, and a spiral buffer channel is formed between the inner wall of the silica gel cylinder and the outer pipe wall of the water pipe. A pressure regulating cavity is formed, and the pressure regulating cavity communicates with the spiral buffer channel.

Further, an anti-blocking assembly is also provided in the drainage hole, the anti-blocking assembly includes an umbrella-shaped flexible cover and a connecting rod, the connecting rod is inserted in the drainage hole, and one end of the connecting rod is connected to The other end of the umbrella-shaped flexible cover is connected to the silicone cylinder; the umbrella-shaped flexible cover is located outside the cylindrical dripper to cover the drainage hole.

Further, a switchable elastic diaphragm is also arranged in the through hole.

Further, the elastic diaphragm and the silicone cylinder are an integral structure.

The utility model also provides an agricultural greenhouse system, which includes a greenhouse main body, and the above-mentioned pressure-compensating cylindrical drip irrigation pipe is arranged in the greenhouse main body.

Compared with the prior art, the advantages and positive effects of the utility model are: the agricultural greenhouse system and the greenhouse planting method provided by the utility model, by putting the cylindrical dripper on the outside of the water pipe, and using the spiral concave on the cylindrical dripper A spiral buffer channel is formed between the groove and the outer pipe wall of the water pipe. The spiral buffer channel replaces the turbulent flow channel to realize the deceleration and buffering of the water flow. Since the spiral buffer channel is a helical structure as a whole, there are no detours, corners, and dead ends, which can effectively avoid large particles. The precipitation and accumulation at roundabouts, corners, and dead corners avoid blockage from the flow principle, which can effectively improve the reliability of use; at the same time, because the silicone cylinder is set in the cylindrical dripper, the end face cavity between the silicone cylinder and the cylindrical dripper And the outer circumference of the water pipe can form a pressure-stabilizing outflow cavity and a pressure-regulating cavity. The silicone cylinder will change its shape according to the water pressure, thereby adjusting the volume of the pressure-stabilizing outflow cavity and the pressure-regulating cavity. When the water pressure increases When the steady pressure outflow chamber becomes smaller and the pressure regulation chamber becomes larger, on the contrary, the steady pressure outflow chamber becomes larger while the pressure regulation chamber becomes smaller, so as to ensure that the water output remains stable and the effective pressure compensation is automatically adjusted. Optimize drip irrigation effect.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings on the premise of not paying creative labor.

Fig. 1 is the three-dimensional view of agricultural greenhouse system of the present utility model;

Fig. 2 is the structural representation of the utility model agricultural greenhouse system;

Fig. 3 is a partial sectional view of the drip irrigation pipe in the agricultural greenhouse system of the present invention;

Fig. 4 is a cross-sectional view of a cylindrical dripper in the agricultural greenhouse system of the present invention;

Fig. 5 is a schematic structural view of the anti-blocking component in the agricultural greenhouse system of the present invention;

Fig. 6 is a sectional view of the silica gel cylinder in the agricultural greenhouse system of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 6, the agricultural greenhouse system of this embodiment includes a greenhouse 1, a storage battery (not shown) and a controller (not shown), the top of the greenhouse 1 is provided with a plurality of vacuum glass plates 12, A plurality of vacuum glass plates 12 form the light-transmitting surface of the greenhouse 1, some of the vacuum glass plates 12 are provided with photovoltaic power generation films 10, and every two adjacent photovoltaic power generation films 10 are arranged alternately; the greenhouse 1 There is a drip irrigation pipe 2 buried under the ground inside, and a plurality of water outlets 20 are opened on the water pipe of the drip irrigation pipe 2. A spiral groove 211 is formed on the inner pipe wall of the cylindrical dripper 21. The inner pipe of the cylindrical dripper 21 The end of the wall is formed with an annular groove (unmarked), and a silicone cylinder 23 is arranged in the annular groove, and a plurality of through holes 231 are provided on the silicone cylinder 23. The outer cylinder wall of the silicone cylinder 23 and the A pressure-stabilizing outflow cavity 210 is formed between the annular grooves, and a drain hole 212 communicating with the pressure-stabilizing outflow cavity 210 is provided on the outer wall of the cylindrical dripper 21. The cylindrical dripper 21 sets Outside the water pipe of the drip irrigation pipe 2, a spiral buffer channel 200 is formed between the spiral groove 211 and the outer pipe wall of the water pipe of the drip irrigation pipe 2, and the inner cylinder wall of the silica gel cylinder 23 is in contact with the drip irrigation pipe. A pressure regulating cavity 201 is formed between the outer pipe walls of the water pipe of the pipe 2, and the pressure regulating cavity 201 communicates with the spiral buffer channel 200; the bottom of the vacuum glass plate 12 is provided with a water collection tank 13, and the greenhouse 1 is also provided with a water tank 3 at the bottom, the water collection tank 13 is connected to the water tank 3, the water tank 3 is connected to the drip irrigation pipe 2 through a water supply pump (not shown), and the water pump is connected to the controller The side wall of the greenhouse 1 is provided with a vacuum insulation board (not shown), the lower edge of the greenhouse is provided with a water retaining wall 4, and the lower end of the water retaining wall 4 is buried below the ground, and the water retaining wall The enclosure wall 4 is located above the drip irrigation pipe 2, and the upper edge of each vacuum glass plate 12 is provided with a spray pipe (not shown), and the spray pipe passes through a cleaning pump (not shown) and the water tank 3 connections.

Specifically, the drip irrigation pipe 2 in the agricultural greenhouse system of this embodiment uses a cylindrical dripper that is inlaid outside the water pipe of the drip irrigation pipe 2, and the cylindrical dripper 21 can be inlaid outside the water pipe of the drip irrigation pipe 2 by hot-melt welding. , the spiral groove 211 in the cylindrical dripper 21 forms a spiral buffer channel 200 with the outer wall of the water pipe of the drip irrigation pipe 2, and the spiral buffer channel 200 replaces the turbulent flow channel formed by the dripper in the prior art. Since the spiral buffer channel 200 is distributed in the drip irrigation The outer circumference of the pipe 2 can effectively increase the length of the spiral buffer channel 200, which is beneficial to consume the water flow capacity and reduce the water pressure, so that the function of the turbulent flow channel can be realized through the spiral buffer channel 200, and the spiral buffer channel 200 increases the water flow path, Large energy consumption, so the size of the spiral groove 211 can be much larger than that of the traditional inlaid cylindrical dripper (traditional size: 0.5-1.2mm, the size of the utility model cylindrical dripper 21: 2~6mm, at the same time, the drainage hole 212 can also open large holes), more importantly, the spiral buffer channel 200 has no detours, corners, and dead ends, avoiding the precipitation and accumulation of large particles at the roundabouts, corners, and dead ends, and avoiding blockage from the flow principle. The water is input from the spiral buffer channel 200 into the pressure regulating cavity 201 and enters the pressure-stabilizing outflow cavity 210 through the through hole 231 and is output through the drainage hole 212 to realize drip irrigation. Preferably, a switchable elastic diaphragm 232 is also arranged in the through hole 231, and the silicone cylinder 23 protrudes and deforms outward under the action of water pressure. 232 can automatically adjust the opening angle according to the difference in water pressure. When the water pressure in the pressure regulating chamber 201 is small, the opening degree of the elastic diaphragm 232 is small or not opened, so as to ensure that the water flow in the outflow chamber 210 does not flow back and there is sufficient The water continuously flows out from the drain hole 212, which can automatically adjust the water pressure and stabilize the pressure. The elastic membrane 232 can be directly formed by not cutting off the remaining material when the through hole 231 is opened in the silicone cylinder 23 . In addition, in order to improve the anti-blocking performance, an anti-blocking assembly 22 is also arranged in the drain hole 212, and the anti-blocking assembly 22 includes an umbrella-shaped flexible cover 221 and a connecting rod 222, and the connecting rod 222 is inserted in the drain hole 212. Among them, one end of the connecting rod 222 is connected to the umbrella-shaped flexible cover 221, and the other end is connected to the silicone cylinder 23; the umbrella-shaped flexible cover 221 is located outside the cylindrical dripper 21 for covering Live the drain hole 212. When the cylindrical dripper 21 is not working, the shape of the silicone cylinder 23 is reset, and the connecting rod 222 is driven to move inward, so that the umbrella-shaped flexible cover 221 just covers the drain hole 212 to prevent foreign objects from blocking the flow channel. Under the interaction of the silica gel cylinder 23 and the anti-blocking component 22, the drip irrigation pipe 2 has the following functions: 1. Pressure adjustment: after the water in the spiral buffer channel 200 flows into the pressure adjustment cavity 201 and is filled with water, the silica gel cylinder 23 will Under the action, it protrudes outwards and deforms, and drives the anti-blocking component 22 to move out of the pipe. At the same time, the water pressure pushes away the elastic diaphragm 232, and the water flows into the pressure-stabilizing outlet cavity 210. After the pressure-stabilizing outlet cavity 210 is full The water flows out of the pipe through the drain hole 212 for drip irrigation; in addition, when the water pressure in the pressure regulating chamber 201 is small, the opening degree of the elastic diaphragm 232 is small or not opened, thereby ensuring that the water flow in the outlet chamber does not flow back (there is sufficient Fluid), to ensure continuous flow out of the liquid outlet, can automatically adjust the water pressure, and stabilize the flow. 2. Pressure replenishment: When the water pressure increases, the water flow rate is fast and the flow rate is large, and the silicone cylinder 23 protrudes and deforms to the outside of the circumference to increase, covering the drain hole 212, and the outflow speed of the drain hole 212 decreases; when the water pressure pressure is low , the flow rate is slow, the silicone cylinder 23 protrudes slightly from the shape of the cylindrical surface, the outflow hole 212 is less blocked, and the outflow speed of the water outlet is fast; in this way, the flow rate of the dripper is guaranteed to be consistent under different pressures.

The photovoltaic power generation films 10 are arranged on the light-transmitting surface of the greenhouse 1, and the photovoltaic power generation films 10 are arranged in a staggered manner. Since the direction of the sun's illumination changes from time to time during the day, the staggered photovoltaic power generation films 10 can ensure that the interior of the greenhouse 1 The crops in different locations can obtain enough light. Preferably, the photovoltaic power generation film 10 adopts an amorphous thin film solar cell, and the amorphous thin film solar cell has a light-transmitting effect, and can transmit external red light and blue light to the interior of the greenhouse 1. The light required for plant growth is satisfied, and since the photovoltaic power generation film 10 is directly arranged on the light-transmitting surface of the greenhouse 1, the area of the photovoltaic power generation film 10 can be effectively increased and the power generation capacity can be increased. The electric energy generated by the photovoltaic power generation film 10 is stored in the storage battery, and the controller controls the power supply operation of relevant electrical components. Wherein, the side wall of greenhouse 1 adopts vacuum insulation board to carry out insulation, and vacuum insulation board has good heat preservation performance, and the top of greenhouse 1 adopts vacuum glass plate 12, and vacuum glass plate 12 can ensure that the top of greenhouse 1 has good heat preservation performance, thereby In winter nights, there is no need for the user to cover the thermal insulation curtain on the greenhouse 1. In addition, multiple vacuum glass panels 12 are used to form the light-transmitting surface of the greenhouse 1. The service life of the vacuum glass panels 12 is longer, and the need for transparent films can be avoided. The hassle of frequent replacement. And the drip irrigation pipe 2 is buried under the ground in the greenhouse 1, and the light-transmitting surface of the greenhouse 1 is also provided with a sump 13 to collect rainwater and store it in the water tank 3. The water in the drip irrigation pipe 2 is sent to directly irrigate the roots of the crops in the soil. In actual use, it is found that since the drip irrigation pipe 2 supplies water at the depth of the roots 101 of the crops 100 below the ground, the water output from the drip irrigation pipe 2 flows downward under the action of gravity, and the roots 101 of the crops 100 have water orientation, and deep soil There is a lot of water in the medium, which will attract the root system 101 of the crop 100 to take root deeper underground, so that the crop 100 can grow in a more vigorous state and obtain high-quality agricultural products. reduced water consumption. As for the surface inside the greenhouse 1, since there is no water supply, the soil layer on the surface is in a dry state for a long time, so that the weeds growing on the surface cannot survive, reducing the labor intensity of farmers weeding. In order to improve the light transmittance of the vacuum glass plate 12, a spray pipe is arranged on the upper edge of each vacuum glass plate 12, and the spray pipe is connected with the water tank 3 through a cleaning pump (not shown). During actual use, the vacuum glass plate 12 will have reduced light transmittance due to dust and other factors. At this time, the nozzle of the spray pipe will inject high-pressure water into the spray pipe through the cleaning pump to clean the surface of the vacuum glass plate 12. And the water that circulates from the vacuum glass plate 12 flows back to the sump 13 again, flows into the water tank 3 again by the sump 13 for reuse, and the inlet of the sump 13 or the water tank 3 is provided with a filter screen as required to filter into the water tank 3. Impurities. Preferably, the photovoltaic ecological greenhouse system of this embodiment also includes an air pump (not shown), the drip irrigation pipe 2 is connected to the air pump and the water pump respectively through a mixing valve, and the air pump and the mixing valve are respectively connected to the The controller connection, specifically, in the actual use process, in order to increase the oxygen content at the root system 101 of the crop 100, the water pump and the air pump can be connected to the drip irrigation pipe 2 at the same time through the mixing valve, and the drip irrigation pipe 2 supplies water at the same time , can transport the appropriate amount of air generated by the air pump to the soil of the lower layer, so as to be more conducive to the luxuriant growth of the roots 101 of the crops 100; of course, it is also possible to ventilate first and then transport water according to needs, and there is no limitation here.

In order to ensure that the surface soil layer in the greenhouse 1 is always in a dry state, and to avoid external rain and other factors from causing external water to flow into the greenhouse 1, the lower edge of the greenhouse 1 is provided with a water-retaining wall 4, and the water-retaining wall 4 The lower end of the drip irrigation pipe 2 is buried below the ground, and the water retaining wall 4 is located above the drip irrigation pipe 2 . Specifically, the water retaining wall 4 encloses the soil at a certain depth below the surface inside the greenhouse 1 and isolates it from the outside world. Soil, so as to ensure that the surface inside the greenhouse 1 remains dry and arid, so that during the growth of the crops in the greenhouse 1, the drip irrigation pipe 2 is used to directly supply water to the roots 101 of the crops 100 from under the surface, so as to ensure that the surface is in a dry state. state, the weeds on the surface are difficult to germinate or survive due to lack of water, and the dry surface keeps the humidity in the inner space of the greenhouse 1 at a low level, which makes it difficult for bacteria and insects to grow and reproduce on the crops 100, which can be greatly reduced. At the same time, the use of herbicides can be eliminated, and there is no need to spend a lot of labor on manual weeding to achieve the purpose of green and environmentally friendly planting; at the same time, the dry surface can facilitate farmers to turn the soil and breathe, which can greatly improve the quality of agricultural products. In the present embodiment, the depth of the water retaining wall 4 buried in the soil is determined according to the growth depth of the root system of the local weed species, so as to ensure that the depth of the dry soil layer on the surface does not meet the requirements of weed growth, and the burial of the drip irrigation pipe 2 The depth depends on the growth depth of the roots 101 of the crops 100, and since the growth depth of the roots 101 of the crops 100 is greater than the growth depth of the weeds, the drip irrigation pipe 2 will only supply water to the crops 100, always ensuring a specific depth of soil on the surface To maintain the dry state, the present embodiment does not limit the height dimension of the water retaining wall 4 and the burial depth dimension of the drip irrigation pipe 2 .

Further, in order to realize automatic irrigation and planting, and realize more precise control of the water supply of the drip irrigation pipe 2, the upper and lower parts of the drip irrigation pipe 2 are correspondingly provided with an upper humidity sensor 51 and a lower humidity sensor 52, and the upper humidity sensor 51, The lower humidity sensors 52 are respectively connected to the controller; the upper humidity sensor 51 and the lower humidity sensor 52 are both buried under the ground. Specifically, during the planting process of crops, trenches are dug in the interior of the greenhouse 1 to bury the drip irrigation pipe 2, the lower humidity sensor 52 and the root system 101 of the crop 100, and the upper humidity sensor 51 is buried in the upper soil during the burying process. And in the actual irrigation process, judge whether need drip irrigation pipe 2 to carry out water supply irrigation by the humidity value of detecting surroundings by lower humidity sensor 52, and in irrigation process, if the humidity that upper humidity sensor 51 detects is greater than set value, then stop The drip irrigation pipe 2 continues to irrigate to ensure that the ground surface is in a dry state, and the root system 101 of the crop 100 can obtain an optimal water supply. Preferably, the water tank 3 is provided with a water level detector (not shown) connected to the controller. In the case of a large amount of rain in the rainy season, when the water level detector detects that the water in the water tank 3 reaches the maximum storage capacity , then start the water pump to transfer the excess rainwater to other containers for temporary storage, so as to meet the water supply requirements of uneven rainfall distribution in different seasons.

In addition, the inside of the greenhouse 1 is provided with a temperature sensor (not shown) connected to the controller, and the greenhouse 1 is provided with a switchable vent 14. Specifically, the temperature sensor can monitor the temperature in the greenhouse 1 in real time. Temperature, when the temperature in the greenhouse 1 is too high, it will affect the rapid growth of crops, then a controller controls the greenhouse 1 to open the vent. When the temperature in the greenhouse 1 is too low, it will also affect the rapid growth of crops, and the controller controls the greenhouse 1 to close the vents to keep warm in a timely manner. Preferably, in order to effectively prolong the photosynthesis time of crops, a switchable sunshade device (not shown) is also provided above the greenhouse 1, and the sunshade device will cooperate with a light sensor (not shown), and at noon when the sunlight intensity is the highest , because the light intensity is too strong, it will cause the crops to stop photosynthesis. After the light intensity detected by the light sensor is greater than the set value, the controller controls the sunshade device to open to cover the greenhouse 1, reducing the light intensity in the greenhouse 1, so that the greenhouse 1 The crops inside continue to carry out photosynthesis, so that the nutrients of the crops are more abundant and the quality is better. The sunshade device can be sunshade equipment such as a sunshade net, a sunshade film or a sunshade plate.

Claims (5)

1. inlaying cylindrical drip irrigation tube, including water pipe outside a kind of pressure-compensated, multiple delivery ports are offered on the water pipe, its feature It is, in addition to multiple column drippers, the middle part of the inner tubal wall of the column dripper is formed with helical groove, the cylinder drop The end of the inner tubal wall of head is provided with silica gel cylinder in the annular groove, offered on the silica gel cylinder formed with annular groove Multiple through holes, voltage stabilizing outflow lumen body, the column dripper are formed between the outer tube wall and the annular groove of the silica gel cylinder Outer wall on offer the osculum connected with the voltage stabilizing outflow lumen body, the column dripper is enclosed on the outside of the water pipe, Between the outer tube wall of the helical groove and the water pipe formed helical buffer passage, the inner tube wall of the silica gel cylinder with it is described Pressure regulating cavity body is formed between the outer tube wall of water pipe, the pressure regulating cavity body connects with the helical buffer passage.

2. inlay cylindrical drip irrigation tube outside pressure-compensated according to claim 1, it is characterised in that also set in the osculum Anti- blocking component is equipped with, the anti-blocking component includes umbrella shape flexible lidstock and connecting rod, and the connecting rod is inserted in the osculum, The one end of the connecting rod connects the umbrella shape flexible lidstock, the other end connects the silica gel cylinder；The flexible envelope of the umbrella shape Lid is used to cover in the osculum positioned at the outside of the column dripper.

3. inlay cylindrical drip irrigation tube outside pressure-compensated according to claim 1, it is characterised in that also set in the through hole It is equipped with switchable flexible sheet.

4. inlay cylindrical drip irrigation tube outside pressure-compensated according to claim 3, it is characterised in that the flexible sheet and institute State silica gel cylinder and be integral structure.

5. a kind of agricultural greenhouse system, including greenhouse main body, it is characterised in that set in the greenhouse main body just like claim Cylindrical drip irrigation tube is inlayed outside any described pressure-compensateds of 1-4.