A pulse-type drip irrigation flow controller

Abstract

The utility model relates to drip irrigation technical field especially relates to a pulse type drip irrigation flow controller, including three -way pulse valve body, the top fixedly connected with control device of three -way pulse valve body, the three -way pulse valve body three ends all screw thread connection has filter seat, the top fixedly connected with monitoring device of filter seat, the inside of filter seat is installed filter screen frame, and one end of filter screen frame is located in the inside of filter seat and is provided with fixed component, the utility model discloses through monitoring device to the pressure difference before and after filter screen real -time monitoring can accurately judge filter screen blockage state, and when monitoring device detects filter screen blockage, control device can immediately trigger such as buzzer, reminds staff in time processing, simultaneously, system control servo motor drive valve core switching passage, temporarily bypasses the blockage branch, guarantees drip irrigation operation continuous operation, and through knob cooperation transmission gear A, transmission ring, transmission rod and stopper, realize the quick locking and release of filter screen frame.

Description

Technical Field

[0001] This utility model relates to the field of drip irrigation technology, and in particular to a pulse drip irrigation flow controller. Background Technology

[0002] Drip irrigation uses plastic pipes to deliver water to the roots of crops through orifices or drippers on capillary tubes with a diameter of about 10mm for localized irrigation. It is currently the most effective water-saving irrigation method in arid and water-scarce areas, with a water utilization rate of up to 95%. Drip irrigation has a higher water-saving and yield-increasing effect than sprinkler irrigation. It can also be combined with fertilization to increase fertilizer efficiency by more than double. It is suitable for irrigation of fruit trees, vegetables, cash crops, and greenhouses, and can also be used for field crop irrigation in arid and water-scarce areas.

[0003] For example, patent number CN109794099A discloses an agricultural drip irrigation filtration device. It performs primary filtration through a centrifugal filter, secondary filtration through a filter screen inside a first filtration mechanism, tertiary filtration through a screen filtration mechanism, and finally quaternary filtration through non-woven fabric inside a second filtration mechanism. This multi-stage filtration achieves effective water treatment and filtration efficiency. The first and second filtration mechanisms are connected to branch pipes and outlet pipes respectively, facilitating disassembly, replacement, and maintenance. During backwashing, a third valve and the first valve of one branch pipe are closed, while the second valve is opened to flush the other branch pipe. The backwashing process utilizes water pressure for cleaning, resulting in low water consumption. The two branch pipes in the circuit can be cleaned alternately, making it simple to operate and cost-effective. A water storage tank allows drip irrigation to continue during backwashing or cleaning of the screen filtration mechanism. For example, patent number CN220875404U discloses a timed drip irrigation device for pear tree planting. It filters the water source multiple times through a filter frame and several filter layers in the filter box to prevent impurities in the water from forming scale and clogging the pipes, thus affecting the drip irrigation effect. The filter frame is easy to remove from the water storage tank for cleaning debris through an internal handle. The filter layers are easy to remove from the filter box for replacement through a grooved plate and a filter box cover, preventing the filter layers from gradually being clogged by impurities in the water after long-term use, which would reduce the drip irrigation efficiency. The device first drills holes in the soil near the pear tree roots, then inserts the conical shell into the holes, and then starts the device to inject water into the holes, preventing water from dripping directly onto the soil surface near the pear tree roots, where water evaporates quickly and wastes water resources.

[0004] However, during the operation of drip irrigation flow controllers, particles in the water and fertilizer can clog the filter screen, thus affecting the drip irrigation. Most existing drip irrigation flow controllers allow for quick removal and replacement of the filter screen using bolts, but the bolts are prone to being lost during disassembly and assembly, and require specific tools for disassembly, which is quite troublesome. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a pulse-type drip irrigation flow controller, which solves the problems of existing drip irrigation flow controllers, which mostly rely on bolts to quickly remove and replace the filter screen. However, the bolts are easily lost during disassembly and assembly, and require specific tools for disassembly, which is quite troublesome.

[0006] The technical solution of this utility model is as follows: a pulse-type drip irrigation flow controller, including a three-way pulse valve body, a control device fixedly connected to the top of the three-way pulse valve body, filter seats threadedly connected to the three ends of the three-way pulse valve body, a monitoring device fixedly connected to the top of the filter seat, a filter screen frame installed on the inner side of the filter seat, and a fixing component set on the inner side of one end of the filter screen frame located in the filter seat. The fixing component is used for connecting the filter screen frame and the filter seat. The fixing component includes a knob, a transmission gear A fixedly connected to the output end of the knob, a transmission ring rotatably connected to one end of the transmission gear A, a transmission rod rotatably connected to the outer side of the transmission ring, and a limit block rotatably connected to the top of the transmission rod. When the filter screen frame is located inside the filter seat, rotating the knob, the knob, in conjunction with the transmission gear A, drives the transmission ring to rotate, and the transmission ring, in conjunction with the transmission rod, drives the limit block to lock the position of the filter screen frame.

[0007] Preferably, the control device has a built-in buzzer alarm, and the monitoring device includes a differential pressure sensor. The monitoring probe of the differential pressure sensor is connected to both ends of the filter frame. The differential pressure sensor can monitor the filter frame and transmit the monitoring data of the filter frame to the control device. If the filter frame is detected to be blocked, the control device will alert the staff.

[0008] Preferably, a valve control seat is rotatably connected to the front end of the three-way pulse valve body. The valve control seat includes a servo motor and a valve core. The valve control seat is electrically connected to both the monitoring device and the control device. Based on the monitoring data from the monitoring device, the servo motor, in conjunction with the valve core, can switch the passage of the three-way pulse valve body.

[0009] Preferably, the filter base has an installation groove on its inner side, and a through hole is provided on the inner side of the installation groove. The diameter of the installation groove is the same as the diameter of the filter screen frame. When the filter screen frame is connected to the filter base, the filter screen frame is installed inside the installation groove.

[0010] Preferably, the filter frame and the insert block are an integral structure. One end of the insert block is provided with a limiting groove on the inner wall of the mounting groove. When the filter frame is located inside the mounting groove, one end of the insert block is inserted into the inner side of the mounting groove.

[0011] Preferably, a guide groove is provided on one side of the limiting block on the inner wall of the limiting groove, and one end of the limiting block extends to the inner side of the guide groove. When the limiting block moves, the limiting block is displaced inside the guide groove.

[0012] Preferably, a rack is provided at the top of the transmission rod on one side of the limiting block, and transmission gears B are provided at both ends of the transmission rod. The transmission rod meshes with the transmission ring and the rack through the two transmission gears B respectively. When the knob drives the transmission ring to rotate in conjunction with the transmission gear A, the transmission ring drives the limiting block to move inside the limiting groove in conjunction with the transmission rod.

[0013] The beneficial effects of this utility model are: This pulse-type drip irrigation flow controller, when used with a three-way pulse valve, uses a differential pressure sensor inside the monitoring device to monitor the pressure difference across the filter in real time. This allows for accurate judgment of the filter's clogging status, preventing flow reduction or nozzle blockage caused by filter clogging. When the monitoring device detects filter clogging, the control device immediately triggers a buzzer to alert staff for timely intervention. Simultaneously, the system automatically controls the servo motor in the valve control seat to drive the valve core to switch pathways, temporarily bypassing blocked branches to ensure continuous drip irrigation operation and improve system reliability. Furthermore, it employs a knob-linked mechanical locking structure. Through the knob's interaction with transmission gear A, transmission ring, transmission rod, and limit block, the filter holder can be quickly locked and released, allowing for tool-free filter installation and removal, significantly reducing maintenance difficulty and downtime. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The diagram shown is a structural schematic of the filter base of this utility model; Figure 3 The diagram shown is a schematic representation of the inner structure of the filter base of this utility model. Figure 4 The diagram shown is a structural schematic of the transmission rod of this utility model.

[0015] Explanation of reference numerals in the attached drawings: 1. Three-way pulse valve body; 2. Control device; 3. Valve control seat; 4. Monitoring device; 5. Filter seat; 6. Filter screen frame; 7. Limiting groove; 8. Limiting block; 9. Knob; 10. Transmission gear A; 11. Transmission ring; 12. Transmission rod; 13. Transmission gear B; 14. Rack; 15. Mounting groove; 16. Through hole; 17. Insert block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 This utility model provides an embodiment: a pulse-type drip irrigation flow controller, including a three-way pulse valve body 1, a control device 2 fixedly connected to the top of the three-way pulse valve body 1, filter seats 5 threadedly connected to the three ends of the three-way pulse valve body 1, a monitoring device 4 fixedly connected to the top of the filter seat 5, a filter screen frame 6 installed on the inner side of the filter seat 5, and a fixing component located on the inner side of the filter seat 5 at one end of the filter screen frame 6, which is used to connect the filter screen frame 6 and the filter seat 5; the fixing component includes a knob 9, a transmission gear A10 fixedly connected to the output end of the knob 9, a transmission ring 11 rotatably connected to one end of the transmission gear A10, a transmission rod 12 rotatably connected to the outer side of the transmission ring 11, and a limit block 8 connected to the top of the transmission rod 12. When the filter screen frame 6 is located inside the filter seat 5, rotating the knob 9, the knob 9, in conjunction with the transmission gear A10, drives the transmission ring 11 to rotate, and the transmission ring 11, in conjunction with the transmission rod 12, drives the limit block 8 to lock the position of the filter screen frame 6.

[0018] Please see Figures 1-2 In this embodiment, the control device 2 has a built-in buzzer alarm, and the monitoring device 4 includes a differential pressure sensor. The monitoring probe of the differential pressure sensor is connected to both ends of the filter frame 6. The differential pressure sensor can monitor the filter frame 6 and transmit the monitoring data of the filter frame 6 to the control device 2. If the filter frame 6 is detected to be blocked, the control device 2 will alert the staff. The front end of the three-way pulse valve body 1 is rotatably connected to a valve control seat 3. The valve control seat 3 includes a servo motor and a valve core. The valve control seat 3, the monitoring device 4, and the control device 2 are all electrically connected. According to the monitoring data of the monitoring device 4, the servo motor and the valve core can switch the passage of the three-way pulse valve body 1.

[0019] Please see Figures 3-4In this embodiment, a mounting groove 15 is provided on the inner side of the filter base 5, and a through hole 16 is provided on the inner side of the mounting groove 15. The diameter of the mounting groove 15 is the same as the diameter of the filter screen frame 6. When the filter screen frame 6 is connected to the filter base 5, the filter screen frame 6 is installed inside the mounting groove 15. The filter screen frame 6 and the insert block 17 are integral structures. One end of the insert block 17 is provided with a limiting groove 7 on the inner wall of the mounting groove 15. When the filter screen frame 6 is located inside the mounting groove 15, one end of the insert block 17 is inserted into the inner side of the mounting groove 15. One side of the limiting block 8 is provided with a guide on the inner wall of the limiting groove 7. The guide groove is formed by extending one end of the limiting block 8 to the inner side of the guide groove. When the limiting block 8 moves, it moves inside the guide groove. The top of the transmission rod 12 is provided with a rack 14 on one side of the limiting block 8. Both ends of the transmission rod 12 are provided with transmission gears B13. The transmission rod 12 meshes with the transmission ring 11 and the rack 14 through the two transmission gears B13 respectively. When the knob 9 drives the transmission ring 11 to rotate in conjunction with the transmission gear A10, the transmission ring 11 drives the limiting block 8 to move inside the limiting groove 7 in conjunction with the transmission rod 12.

[0020] During operation, the device is placed in a suitable position, and then the three ends of the three-way pulse valve body 1 are connected to other equipment. A filter seat 5 is installed between the three ends of the three-way pulse valve body 1 and other equipment. The drip irrigation water and fertilizer passing through the three-way pulse valve body 1 are filtered through the filter seat 5. The monitoring device 4 includes a differential pressure sensor, and the monitoring probe of the differential pressure sensor is connected to both ends of the filter screen frame 6. The differential pressure sensor can monitor the filter screen frame 6 and transmit the monitoring data of the filter screen frame 6 to the control device 2. If the filter screen frame 6 is detected to be blocked, the control device 2 will alert the operator. The front end of the three-way pulse valve body 1 is rotatably connected to a valve control valve. The valve control seat 3 includes a servo motor and a valve core. The valve control seat 3 is electrically connected to the monitoring device 4 and the control device 2. According to the monitoring data of the monitoring device 4, the servo motor and the valve core can switch the passage of the three-way pulse valve body 1 to facilitate the replacement of the filter screen frame 6 in the clogged filter seat 5. When replacing the filter screen frame 6 in the filter seat 5, the knob 9 is rotated. The knob 9 and the transmission gear A10 drive the transmission ring 11 to rotate. The transmission ring 11 and the transmission rod 12 drive the limit block 8 to move inside the limit groove 7, so that the limit block 8 limits the filter screen frame 6, which facilitates the disassembly and assembly of the filter screen frame 6 through the limit block 8. Compared to the prior art document CN109794099A, which describes an agricultural drip irrigation filtration device, this device performs primary filtration through a centrifugal filter, secondary filtration through a filter screen inside a first filtration mechanism, tertiary filtration through a screen filtration mechanism, and finally quaternary filtration through a non-woven fabric inside a second filtration mechanism. This multi-stage filtration achieves effective water treatment and removes contaminants. The first and second filtration mechanisms are connected to branch pipes and outlet pipes respectively, facilitating disassembly, replacement, and maintenance. During backwashing, a third valve and the first valve of one branch pipe are closed, while the third valve is opened. The second valve flushes another branch pipe. During backwashing, the water pressure is used to remove impurities, achieving the cleaning purpose with low water consumption. The two branch pipes in the circuit can be cleaned alternately, making it simple to operate and cost-effective. While backwashing or cleaning the screen filter mechanism, drip irrigation can continue via the installed water storage tank. CN220875404U describes a timed drip irrigation device for pear tree cultivation, which filters the water source multiple times through several filter layers in a filter frame and filter box to prevent scale buildup and pipe blockage, thus affecting the drip irrigation effect. The filter frame is easily removed from the water storage tank via an internal handle. Cleaning debris is crucial. The filter layer, secured by a grooved plate and filter box cover, is easily removed and replaced from the filter box, preventing impurities in the water from clogging the screen holes over time and reducing drip irrigation efficiency. To prevent this, holes are first drilled in the soil near the pear tree roots, then the conical shell is inserted into the holes before water is injected. This prevents water from dripping directly onto the soil surface near the pear tree roots, where rapid evaporation wastes water. Furthermore, the three-way pulse valve allows for real-time monitoring of the pressure difference across the filter screen using a differential pressure sensor inside the monitoring device. This accurately determines the filter screen's clogging status and prevents further blockage. The system addresses drip irrigation system flow reduction or nozzle blockage caused by filter clogging. When the monitoring device detects filter clogging, the control device can immediately trigger an alarm, such as a buzzer, to alert staff to address the issue promptly. Simultaneously, the system automatically controls the servo motor in the valve control seat to drive the valve core to switch pathways, temporarily bypassing the blocked branch and ensuring continuous drip irrigation operation, thus improving system reliability. Furthermore, it employs a knob-linked mechanical locking structure. Through the knob's interaction with transmission gear A, transmission ring, transmission rod, and limit block, the filter holder can be quickly locked and released, allowing for tool-free filter installation and removal, significantly reducing maintenance difficulty and downtime.

[0021] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulse-type drip irrigation flow controller, comprising a three-way pulse valve body (1), characterized in that: A control device (2) is fixedly connected to the top of the three-way pulse valve body (1). A filter seat (5) is threaded to each of the three ends of the three-way pulse valve body (1). A monitoring device (4) is fixedly connected to the top of the filter seat (5). A filter screen frame (6) is installed on the inner side of the filter seat (5). A fixing component is provided at one end of the filter screen frame (6) on the inner side of the filter seat (5). The fixing component is used to connect the filter screen frame (6) and the filter seat (5). The fixed assembly includes a knob (9), the output end of which is fixedly connected to a transmission gear A (10), one end of which is rotatably connected to a transmission ring (11), the outer side of which is rotatably connected to a transmission rod (12), and the top end of the transmission rod (12) is connected to a limit block (8). When the filter frame (6) is located inside the filter seat (5), the knob (9) is rotated, and the knob (9) cooperates with the transmission gear A (10) to drive the transmission ring (11) to rotate. The transmission ring (11) cooperates with the transmission rod (12) to drive the limit block (8) to lock the position of the filter frame (6).

2. The pulse-type drip irrigation flow controller according to claim 1, characterized in that: The control device (2) has a built-in buzzer alarm, and the monitoring device (4) includes a differential pressure sensor. The monitoring probe of the differential pressure sensor is connected to both ends of the filter frame (6). The differential pressure sensor can monitor the filter frame (6) and transmit the monitoring data of the filter frame (6) to the control device (2). If the filter frame (6) is found to be blocked, the control device (2) will alert the staff.

3. The pulse-type drip irrigation flow controller according to claim 1, characterized in that: The front end of the three-way pulse valve body (1) is rotatably connected to a valve control seat (3). The valve control seat (3) includes a servo motor and a valve core. The valve control seat (3) is electrically connected to the monitoring device (4) and the control device (2). According to the monitoring data of the monitoring device (4), the servo motor cooperates with the valve core to switch the passage of the three-way pulse valve body (1).

4. A pulse-type drip irrigation flow controller according to claim 1, characterized in that: The filter base (5) has an installation groove (15) on its inner side, and a through hole (16) is provided on the inner side of the installation groove (15). The diameter of the installation groove (15) is the same as the diameter of the filter frame (6). When the filter frame (6) is connected to the filter base (5), the filter frame (6) is installed inside the installation groove (15).

5. A pulse-type drip irrigation flow controller according to claim 1, characterized in that: The filter frame (6) and the insert (17) are an integral structure. One end of the insert (17) is located on the inner wall of the mounting groove (15) with a limiting groove (7). When the filter frame (6) is located inside the mounting groove (15), one end of the insert (17) is inserted into the inner side of the mounting groove (15).

6. A pulse-type drip irrigation flow controller according to claim 1, characterized in that: One side of the limiting block (8) is provided with a guide groove on the inner wall of the limiting groove (7), and one end of the limiting block (8) extends to the inner side of the guide groove. When the limiting block (8) moves, the limiting block (8) is displaced inside the guide groove.

7. A pulse-type drip irrigation flow controller according to claim 1, characterized in that: A rack (14) is provided at the top of the transmission rod (12) on one side of the limiting block (8). Both ends of the transmission rod (12) are provided with transmission gears B (13). The transmission rod (12) meshes with the transmission ring (11) and the rack (14) respectively through the two transmission gears B (13). When the knob (9) drives the transmission ring (11) to rotate in conjunction with the transmission gear A (10), the transmission ring (11) drives the limiting block (8) to move inside the limiting groove (7) in conjunction with the transmission rod (12).

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