Automatic watering device for greenhouse seedling culture

Abstract

The utility model provides an automatic watering device for greenhouse seedling culture. The automatic watering device comprises a water storage container; the spray irrigation pipe is arranged at the top of the greenhouse and is communicated with the water storage container through a first conveying pipe; the nozzles are arranged on the sprinkling irrigation pipe at intervals in the axial direction of the sprinkling irrigation pipe; the first electric control valve and the first conveying pump are both arranged on the first conveying pipe; the first timer is used for periodically generating a first timing signal, and the second timer is used for periodically generating a second timing signal; the controller is used for sending a first control instruction to the first electric control valve and the first conveying pump according to the first timing signal so as to control the first electric control valve to be opened and the first conveying pump to run; the controller is further used for sending a second control instruction to the first electric control valve and the first conveying pump according to the second timing signal so as to control the first electric control valve to be closed and the first conveying pump to stop running. According to the scheme, seedlings in the greenhouse can be watered regularly, quantitatively and automatically, and normal growth of the seedlings is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of greenhouse seedling cultivation, and in particular to an automatic watering device for greenhouse seedling cultivation. Background Art

[0002] To avoid the impact of harsh environments such as low temperatures and strong winds on seedling cultivation, greenhouses are often used for crop seedling cultivation. Currently, in the process of using greenhouses for seedling cultivation, watering the seedlings in the greenhouse is basically done manually. This manual watering method is difficult to control the amount of water. Too little watering can easily lead to soil drying in the seedling tray, while too much watering can cause water accumulation in the seedling tray, thus affecting the growth of the seedlings. Summary of the Invention

[0003] The embodiments of the present application provide an automatic watering device for raising seedlings in a greenhouse to solve or alleviate one or more technical problems in the prior art.

[0004] An embodiment of the present application provides an automatic watering device for greenhouse seedlings, comprising: a water storage container for storing water; a sprinkler pipe, arranged at the top of the greenhouse and above the seedling tray, and connected to the water storage container through a first delivery pipe; a plurality of nozzles, arranged on the sprinkler pipe at intervals along the axial direction of the sprinkler pipe, and all facing the seedling tray; a first electrically controlled valve and a first delivery pump, both arranged on the first delivery pipe; a first timer and a second timer, the first timer being used to periodically generate a first timing signal, and the second timer being used to periodically generate a second timing signal, the generation period of the first timing signal being equal to the generation period of the second timing signal, and the interval between the first timing signal and the second timing signal being a preset time; a controller, electrically connected to the first electrically controlled valve, the first delivery pump, the first timer, and the second timer, respectively; the controller being used to send a first control instruction to the first electrically controlled valve and the first delivery pump according to the first timing signal to control the first electrically controlled valve to open and the first delivery pump to operate; the controller is also used to send a second control instruction to the first electrically controlled valve and the first delivery pump according to the second timing signal to control the first electrically controlled valve to close and the first delivery pump to stop operating.

[0005] In one embodiment, the automatic watering device for greenhouse seedlings also includes: a soil moisture sensor for detecting the moisture information of the soil in the seedling tray; a flow regulating valve, arranged on the first conveying pipe; and a controller electrically connected to the soil moisture sensor and the flow regulating valve, respectively, to adjust the opening and closing degree of the flow regulating valve according to the soil moisture information.

[0006] In one embodiment, the automatic watering device for greenhouse seedlings also includes: a flow meter, a wireless transceiver and a mobile terminal, the flow meter and the wireless transceiver are electrically connected to the controller, and the mobile terminal is wirelessly connected to the wireless transceiver; the flow meter is used to detect the flow information on the first delivery pipe; the mobile terminal is used to receive and display the flow information through the wireless transceiver and the controller, and the mobile terminal is also used to send a third control instruction to the flow regulating valve through the wireless transceiver and the controller to adjust the opening and closing degree of the flow regulating valve.

[0007] In one embodiment, the automatic watering device for greenhouse seedling cultivation also includes: a water supply container, which is connected to the water storage container through a second delivery pipe; a second electrically controlled valve and a second delivery pump, both of which are arranged on the second delivery pipe; a first liquid level sensor, which is arranged at the bottom of the water storage container, and is used to detect the first liquid level information of the water in the water storage container; a controller is electrically connected to the second electrically controlled valve, the second delivery pump and the first liquid level sensor respectively; the controller is used to send a fourth control instruction to the second electrically controlled valve and the second delivery pump when receiving the first liquid level information, so as to control the opening of the second electrically controlled valve and the operation of the second delivery pump.

[0008] In one embodiment, the automatic watering device for greenhouse seedling cultivation also includes: a second liquid level sensor, arranged on the top of the water storage container, for detecting the second liquid level information of the water in the water storage container; a controller connected to the second liquid level sensor; and the controller is also used to send a fifth control instruction to the second electronically controlled valve and the second delivery pump upon receiving the second liquid level information, so as to control the second electronically controlled valve to close and the second delivery pump to stop running.

[0009] In one embodiment, the sprinkler pipes include multiple groups of seedling trays, and the multiple sprinkler pipes and the multiple groups of seedling trays are arranged at intervals along the length direction of the greenhouse, and one sprinkler pipe is arranged in a one-to-one correspondence with one group of seedling trays.

[0010] In one embodiment, each sprinkler pipe extends along the width direction of the greenhouse, each group of seedling trays includes multiple seedling trays, and the multiple seedling trays are spaced apart along the width direction of the greenhouse and opposite to the corresponding sprinkler pipes.

[0011] In one embodiment, a crossbeam is provided on the top of the greenhouse, and the crossbeam extends along the width direction of the greenhouse; the sprinkler pipe is hung on the crossbeam through a plurality of hanging parts; wherein the plurality of hanging parts are arranged at intervals along the length direction of the crossbeam.

[0012] The embodiment of the present application adopts the above-mentioned technical solution, by arranging a first electrically controlled valve and a first delivery pump on the first delivery pipe connecting the water storage container and the sprinkler pipe, and arranging a controller electrically connected to the first electrically controlled valve, the first delivery pump, the first timer and the second timer respectively, so that when the first timer periodically generates a first timing signal, the controller sends a first control instruction to the first electrically controlled valve and the first delivery pump according to the first timing signal to control the first electrically controlled valve to open and the first delivery pump to operate, thereby enabling the water in the water storage container to be transported to the sprinkler pipe through the first delivery pipe, and sprayed toward the seedling tray through multiple nozzles to water the seedlings in the seedling tray; when the second timer periodically generates a second timing signal, the controller also sends a second control instruction to the first electrically controlled valve and the first delivery pump according to the second timing signal to control the first electrically controlled valve to close and the first delivery pump to stop operating, thereby stopping the water in the water storage container from being transported to the sprinkler pipe through the first delivery pipe, so that the multiple nozzles stop watering the seedlings in the seedling tray. Because the first timing signal and the second timing signal have the same generation cycle and are separated by a preset time, the controller can periodically control the first electrically controlled valve to open and close, and periodically control the first delivery pump to run and stop running, thereby periodically watering the seedlings in the seedling tray. Moreover, because the first timing signal and the second timing signal are separated by a preset time, the amount of watering in each cycle can also be made the same. Based on this, the seedlings in the seedling tray can be automatically watered regularly and quantitatively, and the frequency and amount of watering can be accurately controlled, thereby avoiding soil drought in the seedling tray due to insufficient watering or water accumulation in the seedling tray due to excessive watering, which is conducive to the normal growth of the seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 Shown is a structural schematic diagram of an automatic watering device for greenhouse seedling cultivation according to an embodiment of the present application.

[0015] Figure 2 Shown is a schematic diagram of the layout of the seedling tray in this application. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0017] Figure 1 Shown is a structural schematic diagram of an automatic watering device for greenhouse seedling cultivation according to an embodiment of the present application.

[0018] like Figure 1 As shown, the automatic watering device 100 for greenhouse seedling cultivation includes a water storage container 10, a sprinkler pipe 20, multiple nozzles 21, a first delivery pipe 40, a first electrically controlled valve 41, a first delivery pump 42, a first timer 51, a second timer 52 and a controller 53.

[0019] The water storage container 10 is used to store water. The sprinkler pipe 20 is installed at the top of the greenhouse 30, above the seedling tray 31, and is connected to the water storage container 10 via a first delivery pipe 40. Multiple nozzles 21 are spaced along the axial direction of the sprinkler pipe 20 and face the seedling tray 31. A first electrically controlled valve 41 and a first delivery pump 42 are both installed on the first delivery pipe 40.

[0020] The first timer 51 is configured to periodically generate a first timing signal, and the second timer 52 is configured to periodically generate a second timing signal. The generation period of the first timing signal is equal to the generation period of the second timing signal, and the first timing signal and the second timing signal are separated by a preset time. Preferably, the preset time is less than the generation period of the first timing signal and the second timing signal.

[0021] For example, the generation period of the first timing signal generated by the first timer 51 and the generation period of the second timing signal generated by the second timer 52 can both be 3 hours, and the preset time interval between the first timing signal and the second timing signal can be any value such as 10 minutes, 30 minutes, or 60 minutes. It should be noted that the timing time for the first timer 51 to generate the first timing signal, the timing time for the second timer 52 to generate the second timing signal, and the preset time interval between the first timing signal and the second timing signal can be selected and adjusted according to actual needs, and the embodiments of the present application are not limited thereto.

[0022] The controller 53 is electrically connected to the first electrically controlled valve 41, the first delivery pump 42, the first timer 51, and the second timer 52. The controller 53 is configured to send a first control instruction to the first electrically controlled valve 41 and the first delivery pump 42 based on a first timing signal to control the opening of the first electrically controlled valve 41 and the operation of the first delivery pump 42. The controller 53 is also configured to send a second control instruction to the first electrically controlled valve 41 and the first delivery pump 42 based on a second timing signal to control the closing of the first electrically controlled valve 41 and the stopping of the first delivery pump 42.

[0023] Exemplarily, the process in which the controller 53 controls the amount of watering by controlling the first electrically-controlled valve 41 and the first delivery pump 42 includes: when the controller 53 receives a first timing signal, sending a first control instruction to the first electrically-controlled valve 41 and the first delivery pump 42 to control the first electrically-controlled valve 41 to open and the first delivery pump 42 to operate, so that the water in the water storage container is transported to the sprinkler pipe 20 through the first delivery pipe 40, and multiple nozzles 21 spray water toward the seedling tray 31; when the controller 53 receives a second timing signal, sending a second control instruction to the first electrically-controlled valve 41 and the first delivery pump 42 to control the first electrically-controlled valve 41 to close and the first delivery pump 42 to stop operating, so that the water in the water storage container 10 stops being transported to the sprinkler pipe 20 through the first delivery pipe 40, and then the multiple nozzles 21 stop spraying water toward the seedling tray 31. Since the generation period of the first timing signal and the second timing signal is the same and the interval is a preset time, the controller 53 can periodically control the opening and closing of the first electrically controlled valve 41, and periodically control the operation and stop of the first delivery pump 42, so that a fixed amount of water can be periodically sprayed into the seedling tray 31, thereby realizing automatic, timed and quantitative watering of the seedlings in the greenhouse 30.

[0024] In this embodiment, a first electrically controlled valve 41 and a first delivery pump 42 are provided on the first delivery pipe 40 connecting the water storage container 10 and the sprinkler pipe 20, and a controller 53 is provided which is electrically connected to the first electrically controlled valve 41, the first delivery pump 42, the first timer 51 and the second timer 52, respectively. When the first timer 51 periodically generates a first timing signal, the controller 53 sends a first control instruction to the first electrically controlled valve 41 and the first delivery pump 42 according to the first timing signal, so as to control the opening of the first electrically controlled valve 41 and the operation of the first delivery pump 42, thereby enabling the water storage container 10 to be filled with water. The water in the water storage container 10 is transported to the sprinkler pipe 20 via the first delivery pipe 40 and sprayed toward the seedling tray 31 via the multiple nozzles 21 to water the seedlings in the seedling tray 31. When the second timer 52 periodically generates a second timing signal, the controller 53 also sends a second control instruction to the first electrically controlled valve 41 and the first delivery pump 42 based on the second timing signal to control the first electrically controlled valve 41 to close and the first delivery pump 42 to stop operating. This stops the water in the water storage container 10 from being transported to the sprinkler pipe 20 via the first delivery pipe 40, causing the multiple nozzles 21 to stop watering the seedlings in the seedling tray 31. Because the first and second timing signals have the same generation period and are separated by a preset time interval, the controller 53 can periodically control the first electrically controlled valve 41 to open and close, and periodically control the first delivery pump 42 to operate and stop operating, thereby achieving periodic watering of the seedlings in the seedling tray 31. Furthermore, because the first and second timing signals are separated by a preset time interval, the watering amount in each cycle can be maintained constant. Based on this, the seedlings in the seedling tray 31 can be automatically watered at a regular and quantitative manner, and the frequency and amount of watering for the seedlings can be accurately controlled to avoid the soil in the seedling tray 31 from drying out due to too little watering or to avoid water accumulation in the seedling tray 31 due to too much watering, which is conducive to the normal growth of the seedlings.

[0025] In one embodiment, Figure 1 As shown, the greenhouse seedling automatic watering device 100 also includes a soil moisture sensor 32 and a flow control valve 43. The soil moisture sensor 32 is disposed within the seedling tray 31 and is used to detect soil moisture information within the seedling tray 31. The flow control valve 43 is disposed on the first delivery pipe 40 and is used to adjust the flow rate of the first delivery pipe 40. The controller 53 is electrically connected to the soil moisture sensor 32 and the flow control valve 43, respectively, to adjust the opening and closing degree of the flow control valve 43 based on the soil moisture information.

[0026] For example, the controller 53 is used to receive the humidity information of the soil in the seedling tray 31 detected by the soil moisture sensor 32 in real time, and when the humidity information is less than a preset humidity value, send a first adjustment instruction to the flow regulating valve 43, so that the flow regulating valve 43 increases the opening and closing degree according to the first adjustment instruction; the controller 53 is also used to send a second adjustment instruction to the flow regulating valve 43, so that the flow regulating valve 43 decreases the opening and closing degree according to the second adjustment instruction, when the humidity information is greater than the preset humidity value. In this way, the opening and closing degree of the flow regulating valve 43 can be adjusted according to the humidity information of the soil in the seedling tray 31, so as to adjust the flow on the first delivery pipe 40, and then automatically adjust the watering amount in each cycle, so that the watering amount is adapted to the humidity of the soil in the seedling tray 31, avoiding excessive or insufficient watering.

[0027] It should be noted that the method of obtaining the first adjustment instruction or the second adjustment instruction by presetting a humidity value in the controller 53 and comparing the humidity information received in real time with the preset humidity value is a prior art. This application does not claim to protect this method, but rather claims to protect the connection relationship and signal transmission relationship between the controller 53 and the soil moisture sensor 32 and the flow control valve 43.

[0028] In one embodiment, Figure 1 As shown, the automatic watering device 100 for greenhouse seedling cultivation further includes a flow meter 44, a wireless transceiver 54, and a mobile terminal 55. The flow meter 44 and the wireless transceiver 54 are both electrically connected to the controller 53, and the mobile terminal 55 is wirelessly connected to the wireless transceiver 54. The flow meter 44 is used to detect the flow information on the first delivery pipe 40. The mobile terminal 55 is used to receive and display the flow information through the wireless transceiver 54 and the controller 53. The mobile terminal 55 is also used to send a third control instruction to the flow regulating valve 43 through the wireless transceiver 54 and the controller 53 to adjust the opening and closing degree of the flow regulating valve 43. Based on this, the mobile terminal 55 can be used to remotely monitor the flow information on the first delivery pipe 40, and the opening and closing degree of the flow regulating valve 43 can be remotely adjusted through the mobile terminal 55 to adjust the flow on the first delivery pipe 40, thereby adjusting the amount of watering.

[0029] In one embodiment, Figure 1As shown, the automatic watering device 100 for greenhouse seedling cultivation further includes a water supply container 60, a second electrically controlled valve 71, a second delivery pump 72, and a first liquid level sensor 11. The water supply container 60 is connected to the water storage container 10 via a second delivery pipe 70. The second electrically controlled valve 71 and the second delivery pump 72 are both disposed on the second delivery pipe 70. The first liquid level sensor 11 is disposed at the bottom of the water storage container 10 and is configured to detect a first liquid level within the water storage container 10, where the first liquid level is the position of the first liquid level sensor 11. A controller 53 is electrically connected to the second electrically controlled valve 71, the second delivery pump 72, and the first liquid level sensor 11, respectively. Upon receiving the first liquid level information, the controller 53 is configured to send a fourth control instruction to the second electrically controlled valve 71 and the second delivery pump 72 to control the opening of the second electrically controlled valve 71 and the operation of the second delivery pump 72. In this way, when the first liquid level sensor 11 detects that the water level in the water storage container 10 reaches the position of the first liquid level sensor 11, first liquid level information will be generated. When the controller 53 receives the first liquid level information, it sends a fourth control instruction to the second electrically controlled valve 71 and the second delivery pump 72 to control the second electrically controlled valve 71 to open and the second delivery pump 72 to operate, so that the water in the water supply container 60 can be delivered to the water storage container 10, realizing automatic water supply to the water storage container 10, and preventing the water storage amount in the water storage container 10 from being too small and unable to water normally.

[0030] In one embodiment, Figure 1 As shown, the automatic watering device 100 for greenhouse seedling cultivation further includes a second liquid level sensor 12, which is disposed on top of the water storage container 10 and is configured to detect a second liquid level of the water within the water storage container 10. The second liquid level is the position of the second liquid level sensor 12, and is higher than the first liquid level. A controller 53 is electrically connected to the second liquid level sensor 12. Upon receiving the second liquid level information, the controller 53 is further configured to send a fifth control instruction to the second electrically controlled valve 71 and the second delivery pump 72, thereby closing the second electrically controlled valve 71 and stopping the second delivery pump 72. In this way, when the second liquid level sensor 12 detects that the water level in the water storage container 10 reaches the position of the second liquid level sensor 12, second liquid level information will be generated. When receiving the second liquid level information, the controller 53 sends a fifth control instruction to the second electrically controlled valve 71 and the second delivery pump 72 to control the second electrically controlled valve 71 to open and the second delivery pump 72 to stop running, so as to stop the water in the water supply container 60 from being transported to the water storage container 10, thereby automatically stopping the water supply to the water storage container 10 and preventing the water storage amount in the water storage container 10 from exceeding its capacity and overflowing.

[0031] In one embodiment, please refer to Figure 1 and Figure 2The plurality of sprinkler pipes 20 and the plurality of seedling trays 31 are spaced apart along the longitudinal direction D2 of the greenhouse 30, with one sprinkler pipe 20 corresponding to one seedling tray 31. This allows one sprinkler pipe 20 to simultaneously supply water to the seedlings in a group of seedling trays 31, thereby improving watering efficiency.

[0032] In one embodiment, please refer to Figure 1 and Figure 2 Each sprinkler pipe 20 extends along the width direction D1 of the greenhouse 30. Each group of seedling trays 31 includes multiple seedling trays 31. The multiple seedling trays 31 are arranged at intervals along the width direction D1 of the greenhouse 30 and opposite to the corresponding sprinkler pipe 20. In this way, one sprinkler pipe 20 can simultaneously supply water to multiple seedling trays 31 in a group of seedling trays 31, which is conducive to improving watering efficiency.

[0033] In one embodiment, Figure 1 As shown, a crossbeam 33 is provided at the top of the greenhouse 30, extending along the width direction D1 of the greenhouse 30. The irrigation pipe 20 is suspended from the crossbeam via a plurality of hangers 22, which are spaced apart along the length direction D2 of the crossbeam. By using the hangers 22 to hang the irrigation pipe 20 from the crossbeam of the greenhouse 30, the irrigation pipe 20 can be laid out at the top of the greenhouse 30, effectively utilizing the space above the greenhouse 30 and improving space efficiency.

[0034] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An automatic watering device for greenhouse seedling cultivation, characterized in that: include: Water storage container, used to store water; A sprinkler pipe is provided on the top of the greenhouse and above the seedling tray, and is connected to the water storage container through a first delivery pipe; A plurality of nozzles are arranged on the sprinkler pipe at intervals along the axial direction of the sprinkler pipe and all face the seedling tray; A first electrically controlled valve and a first delivery pump are both provided on the first delivery pipe; a first timer and a second timer, wherein the first timer is configured to periodically generate a first timing signal, and the second timer is configured to periodically generate a second timing signal, wherein a generation period of the first timing signal is equal to a generation period of the second timing signal, and a preset time interval exists between the first timing signal and the second timing signal; a controller electrically connected to the first electrically controlled valve, the first delivery pump, the first timer, and the second timer, respectively; The controller is used to send a first control instruction to the first electronically controlled valve and the first delivery pump according to the first timing signal to control the first electronically controlled valve to open and the first delivery pump to operate; the controller is also used to send a second control instruction to the first electronically controlled valve and the first delivery pump according to the second timing signal to control the first electronically controlled valve to close and the first delivery pump to stop operating.

2. The device according to claim 1, characterized in that Also includes: A soil moisture sensor is used to detect the moisture information of the soil in the seedling tray; a flow regulating valve, disposed on the first delivery pipe; The controller is electrically connected to the soil moisture sensor and the flow regulating valve respectively, so as to adjust the opening and closing degree of the flow regulating valve according to the soil moisture information.

3. The device according to claim 2, characterized in that It also includes a flow meter, a wireless transceiver and a mobile terminal, wherein the flow meter and the wireless transceiver are both electrically connected to the controller, and the mobile terminal is wirelessly connected to the wireless transceiver; The flow meter is used to detect flow information on the first delivery pipe; The mobile terminal is used to receive and display the flow information through the wireless transceiver and the controller. The mobile terminal is also used to send a third control instruction to the flow regulating valve through the wireless transceiver and the controller to adjust the opening and closing degree of the flow regulating valve.

4. The device according to claim 1, characterized in that Also includes: a water supply container, connected to the water storage container via a second delivery pipe; A second electrically controlled valve and a second delivery pump are both provided on the second delivery pipe; a first liquid level sensor, disposed at the bottom of the water storage container, for detecting first liquid level information of water in the water storage container; The controller is electrically connected to the second electrically controlled valve, the second delivery pump and the first liquid level sensor respectively; The controller is configured to send a fourth control instruction to the second electrically controlled valve and the second delivery pump upon receiving the first liquid level information, so as to control the second electrically controlled valve to open and the second delivery pump to operate.

5. The device according to claim 4, characterized in that Also includes: a second liquid level sensor, disposed on the top of the water storage container, for detecting second liquid level information of water in the water storage container; The controller is connected to the second liquid level sensor; The controller is further configured to, upon receiving the second liquid level information, send a fifth control instruction to the second electrically controlled valve and the second delivery pump to control the second electrically controlled valve to close and the second delivery pump to stop running.

6. The device according to any one of claims 1 to 5, characterized in that The plurality of sprinkler pipes and the plurality of seedling trays are arranged at intervals along the length direction of the greenhouse, and one sprinkler pipe is arranged in one-to-one correspondence with one group of seedling trays.

7. The device according to claim 6, characterized in that Each of the sprinkler pipes extends along the width direction of the greenhouse, and each group of the seedling trays includes a plurality of the seedling trays. The plurality of seedling trays are spaced apart along the width direction of the greenhouse and are opposite to the corresponding sprinkler pipes.

8. The device according to claim 1, characterized in that A crossbeam is provided on the top of the greenhouse, and the crossbeam extends along the width direction of the greenhouse; the sprinkler pipe is hung on the crossbeam through a plurality of hanging parts; wherein the plurality of hanging parts are arranged at intervals along the length direction of the crossbeam.

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