Greenhouse irrigation and drainage system with both salinity control and water and fertilizer recycling

Abstract

The present invention provides a greenhouse irrigation and drainage system with both salt-alkali treatment and water-fertilizer recycling, which relates to the field of greenhouse irrigation and drainage systems and includes: a switching component, wherein the switching component is composed of a collecting mechanism and a control mechanism, and the switching component can recycle the water collected by the collecting mechanism for multiple times, thereby greatly reducing the consumption of water and fertilizer. At the same time, the switching component has a dual-channel mode, and can realize the effects of water collection, cleaning of collection concealed pipe water permeable holes, oxygen supply to plant roots and external filter layer through switching between channels. The system has powerful functions and is suitable for greenhouse planting. It solves the problem that a large amount of fertilizer in the greenhouse soil will be lost with the water while draining water in the existing greenhouse irrigation and drainage system, resulting in low fertilizer utilization rate, large waste of fertilizer, inability to recycle water, and increased energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of greenhouse irrigation and drainage systems, and in particular to a greenhouse irrigation and drainage system capable of both salinity control and water and fertilizer recycling. Background Art

[0002] my country's arid and semi-arid regions are rich in solar energy resources and have large temperature differences between day and night. Greenhouse cultivation is conducive to making full use of solar energy resources, growing more types of fruits and vegetables, and increasing farmers' income levels. However, the high salinity and alkali problem in the soil in this region has restricted the development of greenhouse agriculture. At present, the salt-alkali control often adopts the measures of flooding and salt suppression combined with underground pipe drainage.

[0003] However, as far as the existing greenhouse irrigation and drainage system is concerned, while draining water, a large amount of fertilizer in the greenhouse soil will also be lost with the water, resulting in low fertilizer utilization rate. Due to the above reasons, in order to ensure the normal fertilizer supply of plants, it is necessary to increase the amount of fertilizer, which results in a large waste and causes certain pollution to the environment. At the same time, water and fertilizer cannot be recycled, which increases energy consumption and is not very practical. Summary of the invention

[0004] The disclosed embodiments relate to a greenhouse irrigation and drainage system that combines salt-alkali control and water-fertilizer recycling. The system has a switching component. The switching component can guide the water collected by the collecting mechanism to the interior of the sedimentation tank, and then pass through the sedimentation tank, secondary filtration in the return liquid barrel, disinfection and sterilization in sequence, and then enter the storage tank for storage. According to the actual nutrient element concentration of the collected water, an appropriate amount of fertilizer can be added as appropriate. The water and fertilizer can be recycled many times, which greatly reduces the consumption of water and fertilizer. At the same time, the switching component has a dual-channel mode. By switching between channels, it can realize the effects of water collection, cleaning of the water holes in the collection concealed pipes, oxygen supply to the roots of plants and the external filter layer. It has powerful functions and is suitable for greenhouse cultivation. At the same time, it has the effects of salt-alkali control and efficient utilization of water and fertilizer, and is extremely flexible and practical.

[0005] In a first aspect, the present disclosure provides a greenhouse irrigation and drainage system that combines salinity control and water and fertilizer recycling, specifically comprising:

[0006] A switching component, the switching component is composed of a collecting mechanism and a control mechanism;

[0007] The collecting mechanism is arranged inside the greenhouse soil, and the collecting mechanism includes a collecting main pipe and a collecting dark pipe, the collecting dark pipe is fixedly installed on the side of the collecting main pipe, the pipe body of the collecting dark pipe is a corrugated pipe design, a water-permeable hole is opened on the collecting dark pipe, and the outside of the collecting dark pipe is wrapped with a filter layer, the filter layer is composed of filter material wrapped by geotextile, and the filter material can be multi-layered, and the composition is sand of different particle sizes;

[0008] The water collected by the collecting main pipe enters the sedimentation tank through the control mechanism. The sedimentation tank is designed as an overflow tank, and the water after the sedimentation tank overflows into the return liquid barrel. The water inside the return liquid barrel is filtered by the filtering device and then introduced into the disinfection equipment for disinfection. After disinfection, the water enters the storage tank for circulating irrigation.

[0009] The electrical equipment in this system is powered by solar power.

[0010] In at least some embodiments, the control mechanism includes a fluid guide seat, a pneumatic control seat and a switching channel column. A drain pipe and a collecting pipe are respectively provided on the left and right sides of the fluid guide seat. The drain pipe can discharge the collected water into the interior of the sedimentation tank, and the collecting pipe is fixedly connected to one end of the collecting main pipe. The pneumatic control seat is vertically inserted into the interior of the fluid guide seat, and the bottom of the pneumatic control seat is inserted into the top of the switching channel column. The switching channel column is rotatably connected to the interior of the fluid guide seat.

[0011] In at least some embodiments, a return spring is provided at the bottom of the pneumatic control seat, and two ends of the return spring are respectively against the inside of the pneumatic control seat and the inside of the switching channel column.

[0012] In at least some embodiments, an air supply channel is provided inside the fluid guide seat, and the air supply channel is connected to the air supply equipment through a connecting pipe. When no gas passes through the air supply channel, under the action of the return spring, the pneumatic control seat is located inside the air supply channel, and the pneumatic control seat can block the air supply channel.

[0013] In at least some embodiments, a track block is provided inside the air supply channel, and a track groove is provided outside the seat body of the pneumatic control seat, and the track groove is plugged into the outside of the track block.

[0014] In at least some embodiments, an escape channel is provided at the bottom of the air supply channel, and the inner diameter of the escape channel is larger than the inner diameter of the air supply channel.

[0015] In at least some embodiments, a windage disk is provided on the top of the pneumatic control seat, and the outer diameter of the windage disk is smaller than the inner diameter of the air supply channel. The windage disk is in the shape of an inverted funnel and is located at the center of the air supply channel.

[0016] In at least some embodiments, a guide protrusion is provided at the bottom of the pneumatic control seat, and a spiral guide groove is provided inside the switching channel column, and the guide protrusion is inserted into the inside of the guide groove.

[0017] In at least some embodiments, the bottom of the switching channel column is provided with a through-going fluid channel and a unilateral through-going reverse channel, the inner end of the reverse channel is connected to the middle of the fluid channel, and when no gas passes through the air supply channel, the two ends of the fluid channel are respectively connected to the drain pipe and the collection pipe, and the reverse channel is blocked by the seat body of the fluid guide seat.

[0018] In at least some embodiments, a connecting channel is provided at the inner top of the switching channel column, and the connecting channel is designed in an inverted "L" shape, and the two ends of the connecting channel are respectively connected to the escape channel and the fluid channel.

[0019] The greenhouse irrigation and drainage system with both salinity control and water and fertilizer recycling provided by the present invention has the following beneficial effects:

[0020] The switching component can direct the water collected by the collection mechanism to the interior of the sedimentation tank, and then enter the storage tank for storage after sedimentation in the sedimentation tank, secondary filtration in the return liquid barrel, and disinfection and sterilization. According to the actual nutrient element concentration of the collected water, an appropriate amount of fertilizer can be added as appropriate. The water and fertilizer can be recycled many times, which greatly reduces the consumption of water and fertilizer. At the same time, the switching component has a dual-channel mode. By switching between channels, it can collect water, clean the water holes of the collection pipes, and supply oxygen to the roots of plants. It is powerful and suitable for greenhouse cultivation. It also has the effects of salt-alkali control and efficient utilization of water and fertilizer, which improves the flexibility and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0022] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a structural schematic diagram of the greenhouse irrigation and drainage system of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the switching component of the present invention.

[0026] Figure 3 It is a schematic diagram of the position structure of the switching component of the present invention located inside the greenhouse soil.

[0027] Figure 4 It is a schematic diagram of the structure after the control mechanism of the present invention is disassembled.

[0028] Figure 5 It is a schematic diagram of the internal structure of the switching component of the present invention when it is in a reset state.

[0029] Figure 6 It is a schematic diagram of the internal structure of the control mechanism of the switching component of the present invention when the gas supply is initially obtained (during the first stage of switching action).

[0030] Figure 7 It is a structural schematic diagram of the internal gas flow when the control mechanism of the present invention completes the switching action.

[0031] Figure 8 The present invention Figure 5 Schematic diagram of the enlarged structure of part A in the middle.

[0032] Fig. 9 The present invention Figure 7 Schematic diagram of the enlarged structure of part B in the middle

[0033] Fig.10 It is a structural diagram of embodiment 3 of the present invention.

[0034] Reference numerals list

[0035] 1. Greenhouse soil;

[0036] 2. Collection organization; 201. Collection supervisor; 202. Collection hidden pipe;

[0037] 3. Control mechanism; 301. Fluid guide seat; 311. Drain pipe; 312. Collecting pipe; 3011. Air supply channel; 3012. Track block; 3013. Escape channel; 302. Pneumatic control seat; 3021. Reset top spring; 3022. Track groove; 3023. Wind resistance disc; 3024. Guide protrusion; 303. Switch channel column; 3031. Fluid channel; 3032. Reverse channel; 3033. Connecting channel; 3034. Guide groove.

[0038] It should be noted that Figure 5 and Figure 7 The black solid arrow in the figure represents the gas entry or flow direction, and the black hollow arrow represents the position and direction of the gas pressure acting on the pneumatic control seat 302. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Please refer to Figures 1 to 10 As shown:

[0041] Embodiment 1:

[0042] The present invention provides a greenhouse irrigation and drainage system with both salt-alkali treatment and water-fertilizer recycling, including a switching component, wherein the switching component is composed of a collecting mechanism 2 and a control mechanism 3;

[0043] The collecting mechanism 2 is arranged inside the greenhouse soil 1, and the collecting mechanism 2 includes a collecting main pipe 201 and a collecting dark pipe 202. The collecting dark pipe 202 is fixedly installed on the side of the collecting main pipe 201. The pipe body of the collecting dark pipe 202 is a corrugated pipe design. The collecting dark pipe 202 is provided with water-permeable holes. The outside of the collecting dark pipe 202 is wrapped with a filter layer. The filter layer is composed of filter material wrapped by geotextile. The filter material can be multi-layered and composed of sand of different particle sizes.

[0044] The water collected by the collecting main 201 enters the sedimentation tank through the control mechanism 3. The sedimentation tank is designed as an overflow tank, and the water after the sedimentation tank overflows into the return liquid barrel. The water inside the return liquid barrel is filtered by the filtering device and then introduced into the disinfection equipment for disinfection. After disinfection, the water enters the storage tank for circulating irrigation. The control mechanism 3 can be manually opened and closed, thereby controlling the switch of the drainage function of the water inside the greenhouse soil 1.

[0045] The electrical equipment in this system is powered by solar power.

[0046] The specific usage and function of this embodiment: the water inside the greenhouse soil 1 will be recycled through the collecting mechanism 2. When the water inside the greenhouse soil 1 is drained, the water passes through the filter material and enters the collecting dark pipe 202. The collecting dark pipe 202 has a certain inclination and finally flows into the collecting main pipe 201 through the collecting dark pipe 202. The water inside the collecting main pipe 201 can be discharged into the sedimentation tank through the control mechanism 3. The sedimentation tank adopts an overflow tank to slow down the flow rate of the water body and precipitate the silt carried in the drainage in the sedimentation tank to achieve the first filtration. The water after precipitation enters the return liquid barrel through the overflow. Since the greenhouse generally adopts a water-saving irrigation system, in order to enable the return liquid to be irrigated for the second time, a water-saving irrigation system is installed behind the return liquid tank. The filtering device adopts a sand and gravel filter. Sand and gravel of different particle sizes are wrapped by geotextile to achieve secondary filtration. Since the water body undergoes a cycle leaching in the soil, it may carry pathogens. The water body after the secondary filtration is introduced into the disinfection equipment for disinfection. The disinfected water body enters the storage tank for storage. When irrigation is needed, it is irrigated again. It should be noted that the nutrient element concentration of the water entering the storage tank may not meet the irrigation needs. Therefore, it is necessary to test before irrigation to test the concentration of nutrient elements, and then calculate according to the actual fertilizer requirement during the crop growth period. The nutrient element concentration of the water body stored in the storage tank is adjusted by adding additional fertilizers to meet the concentration requirements.

[0047] It should be noted that if the salt content in the water body is too high and the fertilizer content is low, it can be directly pumped out and discharged from the overflow tank using a water pump. When the salt content is high and the fertilizer content is also high, it can be diluted and used in the storage tank according to the actual salt content to avoid fertilizer waste.

[0048] Embodiment 2:

[0049] On the basis of Example 1, the switching component has the function of regulating the greenhouse temperature and controlling the growth of crops. Specifically, the temperature is controlled by heating or cooling the air through the temperature control device. It can also realize the root oxygen supply and the cleaning of the dark pipe blockage through the air supply. An air guide pipe is connected to the collecting main pipe 201. When air supply is needed, the control mechanism 3 is closed, and high-pressure gas is input into the air guide pipe through the air supply device to supply air in the reverse direction. The air supply process can increase oxygen for the crop roots on the one hand, which is beneficial to the growth of crops. On the other hand, the high-pressure gas can also clean the water permeable holes of the dark pipe and the external filter layer, relieve blockage, extend the service life, and reduce maintenance costs. In this process, normal temperature gas can be input;

[0050] The implementation method of regulating the greenhouse temperature is as follows: a new air duct is added to the air supply device, and the air duct can discharge the gas into the interior of the greenhouse space, so that when the temperature needs to be increased, the air is heated by the temperature control device, the interior of the greenhouse is heated by one air duct, and the soil and root system are heated by another air duct connected to the collection mechanism 2 to promote crop growth;

[0051] On the contrary, when cooling is needed, the air is cooled by the temperature control equipment, the inside of the shed is cooled by an air duct, and the soil and roots are cooled by another air duct connected to the collection mechanism 2 to control crop growth, adjust the time for agricultural products to be put on the market, and increase output value.

[0052] Embodiment 3:

[0053] Based on Example 1, the related functions in Example 2 are implemented in the following manner:

[0054] The control mechanism 3 includes a fluid guide seat 301, a pneumatic control seat 302 and a switching channel column 303. A drain pipe 311 and a collecting pipe 312 are respectively provided on the left and right sides of the fluid guide seat 301. The drain pipe 311 can discharge the collected water flow into the interior of the sedimentation tank, and the collecting pipe 312 is fixedly connected to one end of the collecting main pipe 201. The pneumatic control seat 302 is vertically inserted into the interior of the fluid guide seat 301, and the bottom of the pneumatic control seat 302 is inserted into the top of the switching channel column 303. The switching channel column 303 is rotatably connected to the interior of the fluid guide seat 301.

[0055] In the disclosed embodiment, an opening and closing valve is installed at the front end of the control mechanism 3, which is used to manually control the opening and closing of the drainage function of the collecting mechanism 2. The control mechanism 3 has a dual-channel mode. By switching between channels, it can collect water, clean the water holes of the collecting concealed pipe 202, and supply oxygen to the roots of plants. It is powerful and suitable for greenhouse cultivation. It also has the effects of salt-alkali control and efficient utilization of water and fertilizer. There is no need to add additional air ducts for use. Even when the opening and closing valve is in an open state, the control mechanism 3 can automatically close the drainage function of the collecting mechanism 2 when obtaining air supply from the air supply equipment.

[0056] In the disclosed embodiment, an air supply channel 3011 is provided inside the fluid guide seat 301, and the air supply channel 3011 is connected to the air supply device through a connecting pipe. When no gas passes through the air supply channel 3011, under the action of the return top spring 3021, the pneumatic control seat 302 is located inside the air supply channel 3011, and the pneumatic control seat 302 can block the air supply channel 3011. In use, when the air supply device supplies air to the inside of the fluid guide seat 301 through the connecting pipe, the switching component can automatically switch to the gas delivery use mode. In this mode, the drain pipe 311 is automatically blocked, so that the gas obtained from the air supply device will be blown back into the interior of the collecting mechanism 2 through the control mechanism 3, and the process switching component can automatically realize the switching operation without human intervention, and the use is convenient and flexible. When the air supply device provides high-pressure gas at room temperature, during the entire air supply process, the gas can oxygenate the crop roots on the one hand, which is beneficial to crop growth. On the other hand, the high-pressure gas can also clean the water permeable holes of the concealed pipes and the external filter layer, alleviate blockage, extend the service life, and reduce maintenance costs. When the gas heated / cooled by the temperature control device is introduced, the purpose of increasing / lowering the temperature and regulating the growth is achieved, and the cumbersome process of installing the air duct on the collecting main pipe 201 in Example 2 is omitted, and automation is achieved to reduce management costs. However, if the temperature inside the shed is quickly controlled, a new air duct needs to be set on the temperature control device to directly pass through the inside of the shed.

[0057] In the embodiment of the present disclosure, an escape channel 3013 is provided at the bottom of the air supply channel 3011, and the inner diameter of the escape channel 3013 is larger than the inner diameter of the air supply channel 3011. In use, when high-pressure gas enters the interior of the fluid guide seat 301, the switching action of the first section of the control mechanism 3 is triggered at the initial stage of entry. Since the pneumatic control seat 302 is located inside the air supply channel 3011 under the action of the reset top spring 3021, the air supply channel 3011 is blocked, so that the gas pressure will directly act on the pneumatic control mechanism 3 at this time. The outer portion of the seat 302 is moved downwardly by the pneumatic control seat 302, thereby pushing the pneumatic control seat 302 to move downwardly and compressing the return spring 3021. A guide protrusion 3024 is provided at the bottom of the pneumatic control seat 302, and a spiral guide groove 3034 is provided inside the switching channel column 303. The guide protrusion 3024 is inserted into the guide groove 3034. When the pneumatic control seat 302 moves downwardly, the guide protrusion 3024 can drive the switching channel column 303 to rotate through the guide groove 3034 to change the use direction of the fluid channel 3031 and the reverse channel 3032. When the pneumatic control seat 302 moves to the inside of the escape channel 3013, the switching action of the second stage will be triggered. A wind resistance disk 3023 is provided on the top of the pneumatic control seat 302, and the outer diameter of the wind resistance disk 3023 is smaller than the inner diameter of the air supply channel 3011. The wind resistance disk 3023 is an inverted funnel shape, and the wind resistance disk 3023 is located at the center of the air supply channel 3011. At this time, since the pneumatic control seat 302 is located inside the escape channel 3013, and the inner diameter of the escape channel 3013 is larger than the outer diameter of the pneumatic control seat 302, At this time, the gas will enter the interior of the fluid channel 3031 through the escape channel 3013 and the connecting channel 3033 in turn and be discharged and depressurized. Thereafter, the pressure of the gas will act on the inverted funnel-shaped windage disk 3023, so that the windage disk 3023 will continue to drive the pneumatic control seat 302 to move downward under the action of pressure until the pneumatic control seat 302 drives the switching channel column 303 to rotate 90°. The control mechanism 3 then completes the complete automatic switching action, realizing the function and effect of the gas backflush collection mechanism 2, which is convenient and stable to use.

[0058] In the embodiment of the present disclosure, a fluid channel 3031 which is arranged through and a reverse channel 3032 which is arranged through on one side are provided at the bottom of the switching channel column 303. The inner end of the reverse channel 3032 is connected to the middle part of the fluid channel 3031. When no gas passes through the air supply channel 3011, the two ends of the fluid channel 3031 are respectively connected to the drain pipe 311 and the collection pipe 312, and the reverse channel 3032 is blocked by the seat body of the fluid guide seat 301. In use, when the switching component is switched to the gas delivery mode, the two ends of the fluid channel 3031 are blocked by the seat body of the fluid guide seat 301, and the reverse channel 3032 is aligned and connected with the collection pipe 312, so that the gas will pass through the air supply channel 3011, the escape channel 3013, the connecting channel 3033, the fluid channel 3031, and the reverse channel 3032 in sequence, and finally enter the interior of the collection mechanism 2 through the collection pipe 312 to realize the operations of supplying oxygen to the plants and cleaning the collection mechanism 2.

[0059] In the disclosed embodiment, a reset top spring 3021 is provided at the bottom of the pneumatic control seat 302, and the two ends of the reset top spring 3021 are respectively against the inside of the pneumatic control seat 302 and the inside of the switching channel column 303. In use, when the gas supply operation is completed, due to the disappearance of gas pressure, the control mechanism 3 will automatically reset under the action of the reset top spring 3021 and return to the use mode of water collection again. In other words, the switching variable of the switching component is realized by whether the gas supply is obtained, and it can be realized without external control components, which improves the flexibility and adaptability of the device. When the gas is not supplied and the drainage needs to be stopped, it is only necessary to manually close the opening and closing valve.

[0060] In the disclosed embodiment, a track block 3012 is provided inside the air supply channel 3011, and a track groove 3022 is provided outside the seat body of the pneumatic control seat 302. The track groove 3022 is plugged into the outside of the track block 3012. The track block 3012 can limit the moving trajectory of the pneumatic control seat 302 through the track groove 3022, so that the pneumatic control seat 302 will not be skewed or twisted during movement, causing the device to be stuck and fail, and the pneumatic control seat 302 is stable to use.

[0061] Specific usage and function of this embodiment: In the present invention, the control mechanism 3 is in a reset state when the gas supply device does not supply gas. At this time, its internal channel is in a water collection mode, that is, the switching component can realize the operation of recycling the water inside the greenhouse soil 1. The water inside the collecting main pipe 201 can be discharged into the sedimentation tank through the collecting pipe 312, the fluid channel 3031 and the drain pipe 311 in sequence and realize the subsequent recycling operation. When the gas supply device supplies gas to the inside of the fluid guide seat 301 through the connecting pipe, the switching component can automatically switch to the gas delivery mode. In this mode, the drain pipe 311 is automatically blocked, so that the gas obtained from the gas supply device will be blown back into the collecting mechanism 2 through the control mechanism 3. 3021, and the process switching component can automatically realize the switching operation without human intervention. When the high-pressure gas enters the interior of the fluid guide seat 301, the switching action of the first section of the control mechanism 3 is triggered at the initial stage of entry. Because the pneumatic control seat 302 is located inside the air supply channel 3011 under the action of the return spring 3021, the air supply channel 3011 is blocked. At this time, the gas pressure will directly act on the outside of the pneumatic control seat 302, thereby pushing the pneumatic control seat 302 to move downward and compress the return spring 3021. At the same time, when the pneumatic control seat 302 moves downward, the guide protrusion 3024 can drive the switching channel column 303 to rotate through the guide groove 3034 to change the use direction of the fluid channel 3031 and the reverse channel 3032. When the pneumatic control seat 302 moves to the inside of the escape channel 3013, the second stage of switching action will be triggered. At this time, since the pneumatic control seat 302 is located inside the escape channel 3013, and the inner diameter of the escape channel 3013 is larger than the outer diameter of the pneumatic control seat 302, the gas will enter the inside of the fluid channel 3031 through the escape channel 3013 and the connecting channel 3033 in sequence and be discharged and depressurized. Thereafter, the pressure of the gas will act on the inverted funnel-shaped wind resistance disk 3023, so that the wind resistance disk 3023 will continue to drive the pneumatic control seat 302 to move downward under the action of pressure, until the pneumatic control seat 302 drives the switching channel column 303 to rotate 90°, and the control mechanism 3 will complete the complete automatic switching action to realize the gas reverse The function and effect of the blowing collection mechanism 2 are as follows: when the switching component is switched to the gas delivery mode, both ends of the fluid channel 3031 are blocked by the seat body of the fluid guide seat 301, and the reverse channel 3032 is aligned and connected with the collection tube 312, so that the gas will pass through the gas supply channel 3011, the escape channel 3013, the connecting channel 3033, the fluid channel 3031, and the reverse channel 3032 in sequence, and finally enter the interior of the collection mechanism 2 through the collection tube 312 to realize the operation of supplying oxygen to the plants and cleaning the collection mechanism 2. After the gas supply operation is completed, the gas supply equipment is turned off. Due to the disappearance of the gas pressure, the control mechanism 3 will automatically reset under the action of the reset top spring 3021 and return to the water collection mode. In other words,The switching variable of the switching component is realized by whether the gas supply is obtained, and it can be realized without external control components.

[0062] In this article, there are a few points to note:

[0063] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0064] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0065] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A greenhouse irrigation and drainage system with both salinity control and water and fertilizer recycling, characterized in that: include: A switching component, the switching component is composed of a collecting mechanism (2) and a control mechanism (3); The collecting mechanism (2) is arranged inside the greenhouse soil (1), and the collecting mechanism (2) comprises a collecting main pipe (201) and a collecting concealed pipe (202), the collecting concealed pipe (202) is fixedly installed on the side of the collecting main pipe (201), the pipe body of the collecting concealed pipe (202) is designed as a corrugated pipe, the collecting concealed pipe (202) is provided with water-permeable holes, and the outside of the collecting concealed pipe (202) is wrapped with a filter layer, the filter layer is composed of filter material wrapped in geotextile, the filter material can be multi-layered, and the composition is sand of different particle sizes; The water collected by the collecting main pipe (201) enters the sedimentation tank through the control mechanism (3). The sedimentation tank is designed as an overflow tank, and the water overflows from the sedimentation tank into the liquid return tank. The water inside the liquid return tank is filtered by the filtering device and then introduced into the disinfection equipment for disinfection. After disinfection, the water enters the storage tank for circulation irrigation. The control mechanism (3) comprises a fluid guide seat (301), a pneumatic control seat (302) and a switching channel column (303); a drainage pipe (311) and a collection pipe (312) are respectively provided on the left and right sides of the fluid guide seat (301); the drainage pipe (311) can discharge the collected water flow into the interior of the sedimentation tank, and the collection pipe (312) is fixedly connected to one end of the collection main pipe (201); the pneumatic control seat (302) is vertically inserted into the interior of the fluid guide seat (301), and the bottom of the pneumatic control seat (302) is inserted into the top of the switching channel column (303); and the switching channel column (303) is rotatably connected to the interior of the fluid guide seat (301); A return spring (3021) is provided at the bottom of the pneumatic control seat (302), and two ends of the return spring (3021) are respectively pressed against the inside of the pneumatic control seat (302) and the inside of the switching channel column (303); The fluid guide seat (301) is provided with an air supply channel (3011) inside, and the air supply channel (3011) is connected to the air supply device through a connecting pipe. When there is no gas passing through the air supply channel (3011), under the action of the return top spring (3021), the pneumatic control seat (302) is located inside the air supply channel (3011), and the pneumatic control seat (302) can block the air supply channel (3011); An escape channel (3013) is provided at the bottom of the air supply channel (3011), and the inner diameter of the escape channel (3013) is greater than the inner diameter of the air supply channel (3011); A wind resistance disk (3023) is provided on the top of the pneumatic control seat (302), and the outer diameter of the wind resistance disk (3023) is smaller than the inner diameter of the air supply channel (3011), the wind resistance disk (3023) is in an inverted funnel shape, and the wind resistance disk (3023) is located at the center of the air supply channel (3011); The bottom of the pneumatic control seat (302) is provided with a guide protrusion (3024), and the interior of the switching channel column (303) is provided with a spiral guide groove (3034), and the guide protrusion (3024) is inserted into the interior of the guide groove (3034); The bottom of the switching channel column (303) is provided with a fluid channel (3031) which is arranged through and a reverse channel (3032) which is arranged through on one side. The inner end of the reverse channel (3032) is connected to the middle of the fluid channel (3031). When no gas passes through the air supply channel (3011), the two ends of the fluid channel (3031) are respectively connected to the drain pipe (311) and the collection pipe (312), and the reverse channel (3032) is blocked by the seat body of the fluid guide seat (301). A connecting channel (3033) is provided at the inner top of the switching channel column (303), and the connecting channel (3033) is designed in an inverted "L" shape, and the two ends of the connecting channel (3033) are respectively connected to the escape channel (3013) and the fluid channel (3031).

2. The greenhouse irrigation and drainage system with both salinity control and water and fertilizer recycling as claimed in claim 1, characterized in that: A track block (3012) is provided inside the air supply channel (3011), and a track groove (3022) is provided outside the seat body of the pneumatic control seat (302), and the track groove (3022) is plugged into the outside of the track block (3012).

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