Tidal irrigation seedbed drainage filtering device

Abstract

The application relates to a tidal irrigation seedbed drainage filtering device, which comprises an automatic drainage valve and a filtering device; a water pipe is provided with a water inlet; an irrigation pipe is connected to one side of the water pipe, the irrigation pipe is provided with an irrigation opening, and the irrigation opening is lower than the water inlet; a floating ball floats up and down in the water pipe and is connected to a water baffle through a traction rope; one end of the water baffle is hinged to the water pipe, and the other end is abutted against the irrigation pipe; a water outlet is correspondingly arranged below the water baffle and is connected to the irrigation pipe; the floating ball has a high position and a low position in the water pipe, wherein when the floating ball is at the low position, the water baffle covers the water outlet, and the water pipe is in communication with the irrigation pipe; when the floating ball is at the high position, the water baffle is driven to rotate upwards to cut off the water pipe and the irrigation pipe, and the water outlet is in communication with the irrigation pipe; a fixing device is arranged above the floating ball and is used for fixing the floating ball at the high position. The device can solve the problem that the current tidal seedbed adopts manual drainage with large operation amount, and can avoid impurity accumulation in the filtering process.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, specifically to a tidal irrigation seedbed drainage and filtration device. Background Technology

[0002] Tidal irrigation systems are highly efficient water-saving irrigation systems designed based on the principle of water level fluctuations. During operation, a pre-mixed nutrient solution or water is introduced into the seedbed, causing the water level to rise slowly to a suitable height for the seedlings to absorb the nutrients. After irrigation, the outlet is manually opened, and the nutrient solution is drained back into the main reservoir.

[0003] Currently, in tidal irrigation systems, the opening and closing of the seedbed outlets are controlled manually, which is time-consuming and labor-intensive. This significantly increases labor costs during large-scale seedling cultivation and causes inconsistent drainage times for seedlings in different seedbeds, affecting crop absorption. Furthermore, during tidal irrigation, the nutrient solution carries away loose substrate from the seedbed during drainage. Commonly used sieve filtration methods are prone to clogging and are difficult to clean, severely impacting substrate filtration efficiency. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this invention is to provide a tidal irrigation seedbed drainage and filtration device that can automatically open and maintain the outlet during tidal irrigation, thereby saving labor costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A tidal irrigation seedbed drainage and filtration device includes a water pipe, an irrigation pipe, a float, a traction rope, a water baffle, a water outlet, and a fixing device, all vertically installed in the seedbed.

[0007] The water pipe is equipped with a water inlet;

[0008] The irrigation pipe is connected to one side of the water pipe, and the irrigation pipe is equipped with an irrigation inlet, which is lower than the water inlet.

[0009] The float moves up and down inside the water pipe and is connected to the baffle plate by a traction rope;

[0010] The baffle is located below the float, with one end hinged to the water pipe and the other end abutting the lower end of the irrigation pipe;

[0011] The water outlet is located below the baffle plate and connected to the irrigation pipe;

[0012] The float has high and low positions inside the water pipe.

[0013] When the float is in a low position, the baffle plate covers the outlet and the water pipe is connected to the irrigation pipe; when the float is in a high position, it drives the baffle plate to rotate upward to isolate the water pipe from the irrigation pipe and the outlet is connected to the irrigation pipe.

[0014] The fixing device is located above the float and is used to fix the float in a high position.

[0015] Furthermore, a vertical partition plate is installed inside the water pipe, which divides the water pipe into a first chamber and a second chamber. The water inlet is located on the side wall of the first chamber, and a baffle plate is installed in the second chamber. The baffle plate is located at the low position of the float, and the float is pressed against the baffle plate by its own weight and floats up and down in the second chamber along the partition plate.

[0016] Furthermore, the first chamber is connected to a guide pipe, with a first overflow port and a second overflow port at each end of the guide pipe. The first overflow port is higher than the inlet, and the second overflow port is lower than the outlet.

[0017] Furthermore, the float is made of a magnetic material, and the fixing device is a magnet.

[0018] Furthermore, a horizontal baffle is provided below the baffle plate. The baffle plate is fixed to the water pipe and located on one side of the water outlet. The baffle plate is provided with water outlet holes, which are arranged correspondingly to the baffle plate.

[0019] Furthermore, a main liquid tank is provided below the water pipe. The main liquid tank contains an impeller, a filter screen, and a wave-making device. The filter screen is located on the wave-making device. The impeller is located at the head of the main liquid tank and correspondingly below the water outlet. The impeller is driven and connected to the wave-making device to drive the filter screen to move in a wave shape. An impurity box is provided at the tail of the main liquid tank, and the impurity box is arranged correspondingly to the end of the filter screen.

[0020] Furthermore, the wave-generating device includes multiple power shafts arranged sequentially along the filter screen. The impeller and the multiple power shafts are connected sequentially by belt drive. Each power shaft is fitted with a rectangular support block. The filter screen is located above the rectangular support block. Adjacent rectangular support blocks rotate 90° relative to each other.

[0021] Furthermore, the height of multiple power shafts decreases sequentially from the head to the tail of the main liquid tank, and the highest points of the top surfaces of multiple rectangular support blocks are on the same plane.

[0022] Furthermore, the two ends of the filter screen are fixed to the main liquid tank, and the middle of the filter screen is supported by its own weight against the rectangular support block.

[0023] Furthermore, a guide plate is hinged to the tail end of the total liquid tank. The guide plate is installed above the impurity tank, and multiple long strip-shaped drainage ditches are evenly distributed on the surface of the guide plate.

[0024] In summary, the present invention has the following advantages:

[0025] When irrigation begins in the seedbed, the float is positioned low within the water pipe, a baffle plate covers the outlet, and the water pipe and irrigation pipe are connected. Nutrient solution enters through the inlet of the water pipe and flows out through the outlet of the irrigation pipe into the seedbed for irrigation. As the water level gradually rises, the float inside the water pipe gradually rises to a higher position, causing the baffle plate to rotate upwards and isolate the water pipe from the irrigation pipe. This prevents nutrient solution from flowing further from the water pipe side to the irrigation pipe side. At this point, the outlet connects to the irrigation pipe, and the nutrient solution in the seedbed flows back to the main liquid tank through the irrigation pipe and the outlet. A fixing device located above the float secures the float at its higher position, keeping the outlet continuously open. Therefore, this invention can automatically open and maintain the outlet during tidal irrigation without manual intervention, saving labor costs. The seedbed drainage and filtration device of this invention can be installed on the seedbed, making it an integral part of the seedbed. It can be used with ordinary seedbeds available on the market and is easy to replace, making it highly valuable for widespread application. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the seedbed drainage and filtration device of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the automatic drain valve of the present invention;

[0028] Figure 3 This is a schematic diagram of the working process of an automatic drain valve. The arrows inside the valve indicate the direction of water flow, the leftmost side indicates the initial water inflow, and the horizontal wavy shape indicates the water level position.

[0029] Figure 4 This is a schematic diagram of the baffle plate in the automatic drain valve of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the filtration device of the present invention;

[0031] Figure 6 This is a schematic diagram of the working process of the rectangular support block;

[0032] In the picture:

[0033] 1—Automatic drain valve; 11—Water inlet; 12—First overflow outlet; 13—Magnet; 14—Float; 15—Traction rope; 16—Baffle plate; 17—Baffle plate; 18—Irrigation inlet; 19—Water baffle plate; 110—Water outlet; 111—Second overflow outlet; 112—Baffle plate; 113—Guide pipe; 114—Water pipe; 191—Water outlet hole;

[0034] 2—Filtering device; 21—Total liquid tank; 22—Power shaft; 23—Impeller; 24—Bearing housing; 25—First pulley; 26—Transmission belt; 27—Filter screen; 28—Rectangular support block; 29—Second pulley; 210—Guide plate; 211—Impure box. Detailed Implementation

[0035] The present invention will now be described in further detail.

[0036] like Figure 1 As shown, a tidal irrigation seedbed drainage and filtration device includes an automatic drain valve 1 and a filter device 2. The automatic drain valve 1 is installed inside the seedbed 3, and the filter device 2 is installed at the bottom of the seedbed. The seedbed has an upward-facing receiving space, and nutrient solution enters the seedbed through the irrigation port 18. After the seedbed liquid level reaches a designated height, the nutrient solution flows to the filter device 2 through the outlet 110. Impurities flow obliquely downward into the impurity box 211 as the filter screen 27 moves, and the nutrient solution flows into the total liquid tank 21.

[0037] like Figure 2 As shown, the automatic drain valve includes a water pipe 114, a water inlet 11, a first overflow outlet 12, a magnet 13, a float 14, a traction rope 15, a partition plate 16, a ball baffle plate 17, an irrigation pipe, an irrigation outlet 18, a water baffle plate 19, a water outlet 110, and a second overflow outlet 111.

[0038] The partition plate 16 is vertically installed in the middle of the water pipe 114, dividing the water pipe 114 into a first chamber and a second chamber; the inlet 11 is located on the side wall of the first chamber, and the lower end of the second chamber is provided with a baffle plate 17. When the float 14 is in a low position, it is pressed against the baffle plate 17 by its own weight, and can float up to a high position along the partition plate 16 as the water level in the water pipe 114 gradually rises.

[0039] The top of the water pipe 114 is equipped with a fixing device for securing the float 14, which is located at a high position. Preferably, the float 14 is made of a magnetically attractive material, and the fixing device is a magnet 13.

[0040] The irrigation pipe includes a horizontal pipe and a vertical pipe. One end of the horizontal pipe is connected to the lower end of the second pipe chamber, and the other end of the horizontal pipe is connected to the lower end of the vertical pipe. An irrigation inlet 18 is provided at the upper end of the vertical pipe.

[0041] The bottom of the float 14 is connected to the baffle plate 19 via the traction rope 15. One end of the baffle plate 19 is connected to the water pipe 114 via a hinge. The float 14 can rotate and lift the other end of the baffle plate 19 via the traction rope 15, so that the baffle plate 19 seals the connection between the water pipe 114 and the irrigation pipe. At this time, the nutrient solution cannot flow into the irrigation pipe through the water pipe 114.

[0042] like Figure 4 As shown, the baffle plate 19 is provided with multiple water outlet holes 191. The multiple water outlet holes 191 are evenly arranged on the side of the baffle plate 19 near the rotation axis, which can allow the nutrient solution to flow out when the baffle plate 19 is lifted without obstructing the impact of the nutrient solution at the inlet 11 on the baffle plate 19.

[0043] The working process of automatic drain valve 1:

[0044] like Figure 3 As shown, the nutrient solution enters the seedbed through the irrigation port 18, and the liquid level at the irrigation port 18 is the same as the liquid level in the second pipe chamber. As the nutrient solution level in the seedbed rises, the float 14 floats continuously with the liquid level. When it floats to the designated liquid level, the magnet 13 can attract the float 14 and pull the baffle plate 19 up through the traction rope 15, keeping the outlet 110 open. If the inlet 11 continues to add nutrient solution at this time, the excess nutrient solution above the liquid level will flow into the first overflow port 12 of the guide pipe 113 and flow out from the second overflow port 111 of the guide pipe 113, increasing the outflow rate. The nutrient solution in the first pipe chamber below the designated liquid level can flow out to the outlet 110 through the outlet hole 191 of the baffle plate 19. After being impacted by the nutrient solution at the inlet 11, the baffle plate 19 can be pressed back onto the outlet 110, at which time the outlet hole 191 is pressed on the baffle plate 112. When the baffle plate 19 is laid flat, the baffle plate 112 can not only help bear the weight of the baffle plate 19, reduce the pressure on the hinge point, and extend the service life, but also cover the water outlet hole 191 of the baffle plate 19 from below to prevent the nutrient solution from leaking out of the water outlet hole 191 of the baffle plate 19.

[0045] Preferably, the size of the inlet 11 is larger than the size of the outlet 110. In actual irrigation, if the flow rate of the inlet 11 is too large, the liquid level will quickly reach the designated position. In order to maintain the water retention time of the seedling substrate, the flow rate of the outlet 110 cannot be greater than the flow rate of the inlet 11. If the flow rate of the inlet 11 is too small, the liquid level will only slowly reach the designated position after the seedling substrate has been saturated, and the flow rate of the outlet 110 will not be affected.

[0046] The automatic drainage valve 1 and seedbed 3 described in this invention can be used in combination with a filter device 2, which can be effectively used in large-scale seedling cultivation scenarios.

[0047] like Figure 5 As shown, the filtration device 2 includes a total liquid tank 21 and an impeller 23, a filter screen 27, and a wave-generating device disposed within the total liquid tank 21. The wave-generating device includes multiple drive shafts 22 arranged sequentially along the filter screen 27. The impeller 23 and the multiple drive shafts 22 are sequentially connected by belt drive. Each drive shaft 22 is provided with a rectangular support block 28. The filter screen 27 is disposed above the rectangular support block 28, and adjacent rectangular support blocks 28 are rotated 90° relative to each other.

[0048] Specifically, the main liquid tank 21 is equipped with a power shaft 22, an impeller 23, a bearing seat 24, a first pulley 25, a transmission belt 26, a filter screen 27, a rectangular support block 28, a second pulley 29, a guide plate 210, and an impurity box 211.

[0049] The impeller 23 is powered by the downward flow of nutrient solution from the outlet 110. A transmission belt 26 is installed on the pulley to transmit power, causing the corresponding power shaft 22 to rotate, which in turn drives the rectangular support block 28 to rotate. Figure 6 As shown.

[0050] The working process of filter device 2:

[0051] Nutrient solution is discharged from the outlet 110 above the impeller 23, causing the impeller 23 to rotate. The impeller 23 drives the pulley of its power shaft 22. The first pulley 25 transmits power to the second pulley 29 via the transmission belt 26, causing the power shaft 22 to rotate. The second pulley 29 is directly connected to the power shaft 22 of the impeller 23. The diameter of the second pulley 29 is larger than that of the first pulley 25, so that the power of the impeller 23 is sufficient to transmit to the subsequent first pulley 25, thereby driving the subsequent power shaft 22 to rotate. The filter screen 27 is installed evenly and inclined downwards along the tail of the total liquid tank 21. The nutrient solution flows downwards along the filter screen 27, and impurities are filtered out during the flow. The nutrient solution is filtered and flows into the bottom of the main liquid tank 21. The filter screen 27 can form a wave shape by moving on the rectangular support block 28, so that the nutrient solution forms peaks and troughs during the flow, and the impurities remaining on the surface are pushed towards the impurity box 211 by the water flow, so as to avoid accumulation. The main liquid tank 21 is equipped with a water pump connector on the side, so that the nutrient solution can be pumped out to form an irrigation circuit. The guide plate 210 is connected to the main liquid tank 21 by a torque hinge. The angle of the guide plate 210 can be adjusted. Long strip drainage ditches are evenly provided on the plate surface to prevent impurities from accumulating on the guide plate 210. The end is placed above the impurity box 211. The impurity box 211 is a separate part and can be directly transported and cleaned.

[0052] The surface of the filter screen 27 is easily deformed. The mesh size of the filter screen 27 near the outlet 110 is generally selected to be 7 to 14 mesh, while the mesh size of the filter screen 27 near the guide plate 210 is generally 200 to 240 mesh, so as to ensure that the filter screen can filter impurities without affecting the filtration efficiency.

[0053] The top surface of the rectangular support block 28 is arc-shaped, and the highest point of the top surface of multiple rectangular support blocks 28 is on the same plane; the filter device 2 generally uses multiple rectangular support blocks 28; the positions of two adjacent rectangular support blocks 28 are rotated 90° relative to each other, so that the adjacent filter screens 27 form a wave shape; the filter screens 27 and the surfaces of the rectangular support blocks 28 have only a very small frictional force; the rotation speed of the rectangular support blocks 28 is determined by the water flow rate of the outlet 110.

[0054] The present invention has the following advantages:

[0055] Without the need for an additional power source, by utilizing the principle of communicating vessels, the liquid level in the water pipe 114 is made to be the same as the liquid level in the seedbed. Using the buoyancy and magnetic force of the float ball 14, the outlet 110 can open and remain open by itself.

[0056] Water pipe 114 is connected to overflow guide pipe 113, so that excessive water volume at inlet 11 will not affect the operation of drain valve; it can ensure that outlet 110 will close automatically after each irrigation and before the next irrigation; the potential energy of nutrient solution drives impeller 23 to rotate, causing rectangular support block 28 on power shaft 22 to rotate.

[0057] The rectangular support block 28 moves in a reciprocating motion up and down. Through the reciprocating filter screen 27, impurities are prevented from accumulating on the screen surface and are pushed along with the nutrient solution towards the impurity box 211 for filtration. The impurity box 211 is easy to clean.

[0058] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A tidal irrigation nursery drain water filtration apparatus, characterised in that: The water pipe, the irrigation pipe, the float ball, the traction rope, the water baffle, the water outlet and the fixing device are vertically arranged in the seedbed; The water pipe is provided with a water inlet; The irrigation pipe is connected to one side of the water pipe, and the irrigation pipe is provided with an irrigation opening, the height of which is lower than that of the water inlet; The float ball floats up and down in the water pipe and is connected to the water baffle through the traction rope; The water baffle is located below the float ball, one end of which is hinged to the water pipe, and the other end is abutted to the lower end of the irrigation pipe; The water outlet is correspondingly arranged below the water baffle and is connected to the irrigation pipe; The float ball has a high position and a low position in the water pipe; When the float ball is at the low position, the water baffle covers the water outlet, and the water pipe is in communication with the irrigation pipe; when the float ball is at the high position, the water baffle is rotated upward to block the water pipe and the irrigation pipe, and the water outlet is in communication with the irrigation pipe; The fixing device is arranged above the float ball and is used for fixing the float ball at the high position; A total liquid pool is arranged below the water pipe, and the total liquid pool is provided with an impeller, a filter screen and a wave making device, the filter screen is arranged on the wave making device; the impeller is arranged at the head of the total liquid pool and is correspondingly arranged below the water outlet, the impeller is drivingly connected to the wave making device, and is used for driving the filter screen to move to form a wave shape through the wave making device; the tail of the total liquid pool is provided with a sundry box, and the sundry box is correspondingly arranged with the end of the filter screen; The wave making device comprises a plurality of power shafts which are arranged in sequence along the filter screen, and the impeller and the plurality of power shafts are sequentially connected through belt transmission, each power shaft is provided with a rectangular support block, the filter screen is arranged above the rectangular support block, and adjacent rectangular support blocks are relatively rotated by 90°; The heights of the plurality of power shafts are sequentially reduced from the head of the total liquid pool to the tail of the total liquid pool, and the highest points of the top surfaces of the plurality of rectangular support blocks are in the same plane; The filter screen is fixedly connected at both ends to the total liquid pool, and the middle part of the filter screen is abutted to the rectangular support block through its own gravity; The tail of the total liquid pool is hinged with a flow guide plate, the flow guide plate is installed above the sundry box, and a plurality of long strip-shaped drainage ditches are uniformly arranged on the surface of the flow guide plate.

2. A tidal irrigation nursery drain filter according to claim 1, wherein: A partition plate is vertically arranged in the water pipe, the partition plate divides the water pipe into a first pipe chamber and a second pipe chamber, the water inlet is arranged on the side wall of the first pipe chamber, the second pipe chamber is provided with a ball blocking plate, the ball blocking plate is located at the low position of the float ball, and the float ball is abutted to the ball blocking plate through its own gravity and floats up and down in the second pipe chamber along the partition plate.

3. A tidal irrigation nursery drain filter according to claim 2, wherein: The first pipe chamber is connected with a flow guide pipe, the flow guide pipe is provided with a first overflow opening and a second overflow opening at both ends, the first overflow opening is higher than the water inlet, and the second overflow opening is lower than the water outlet.

4. A tidal irrigation nursery drain filter according to claim 1, wherein: The float ball is made of a magnetically attractable material, and the fixing device is a magnet.

5. A tidal irrigation nursery drain filter according to claim 1, wherein: A horizontal baffle is arranged below the water baffle, the baffle is fixedly connected to the water pipe and is arranged on one side of the water outlet, the water baffle is provided with a water outlet hole, and the water outlet hole is correspondingly arranged with the baffle.

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