Water and fertilizer proportion regulation and control device
By combining the conical separator sleeve and the No. 1 annular mesh sleeve with a bidirectional rotating cleaning mechanism, the problem of particulate matter deposition in the water-fertilizer ratio control device is solved, ensuring weighing accuracy and preventing clogging, and improving the device's self-cleaning ability and maintenance efficiency.
Patent Information
- Application Number
- CN202511316878.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2025-10-31
AI Technical Summary
Existing water-fertilizer ratio control devices lack an effective particulate matter guiding structure, which causes particulate matter to easily accumulate on the inner wall of the weighing cylinder or at the joint of the guide seat, forming blockages, affecting weighing accuracy, and resulting in low cleaning efficiency and difficulty in preventing blockages.
The design employs a synergistic approach of a conical separator sleeve and a first-ring mesh sleeve to force particulate matter to concentrate. Combined with a bidirectional rotating cleaning mechanism and filter components, it achieves dynamic flow and self-cleaning of particulate matter, and uses a visual monitor to detect and clean it as needed in real time.
It effectively avoids particulate matter deposition, ensures weighing accuracy, reduces the risk of clogging, improves maintenance efficiency, achieves self-cleaning without downtime, and extends the continuous operation cycle of the equipment.
Smart Images
Figure CN120858725A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of water-fertilizer ratio regulation technology, and particularly relates to a water-fertilizer ratio regulation device. Background Technology
[0002] Integrated water and fertilizer technology is widely used in modern agriculture, and its core lies in the precise control of the water-fertilizer mixing ratio. Existing water-fertilizer ratio control devices mostly use weighing cylinders to quantify liquid fertilizer, but this has significant drawbacks in practical applications:
[0003] Particulate matter residue leads to weighing distortion: Liquid fertilizers often contain undissolved solid particles (such as fertilizer crystals or impurities). Existing devices lack an effective particle guiding structure, and particles easily deposit on the inner wall of the weighing cylinder or at the joints of the feed guide, forming blockages. This not only increases the sliding resistance of the feed guide but also interferes with the accuracy of the weighing components due to the weight of the residue, resulting in errors in the water-fertilizer ratio.
[0004] Low cleaning efficiency: Traditional equipment relies on shutdown for cleaning or simple rinsing, which is insufficient to thoroughly remove particles accumulated in the dead corners inside the drum. Continuous accumulation of residues can clog the flow channels, reduce equipment stability, and even require frequent disassembly and maintenance, affecting operational continuity.
[0005] Insufficient dynamic filtration and self-cleaning capabilities: Although some equipment is equipped with filters, static filters are easily covered by particulate matter quickly, and there is a lack of a cleaning mechanism that is activated simultaneously during the waste discharge process. The solvent cannot directionally flush the accumulation area, causing particulate matter to clump together and exacerbating the risk of clogging.
[0006] Therefore, there is an urgent need to develop a water-fertilizer ratio control device with dynamic particulate matter diversion, self-cleaning and real-time monitoring capabilities, so as to improve anti-clogging performance and maintenance efficiency while ensuring weighing accuracy. Summary of the Invention
[0007] The purpose of this invention is to provide a water-fertilizer ratio control device, which aims to solve the problem that existing devices lack an effective particulate matter guiding structure, and that particulate matter easily deposits on the inner wall of the weighing cylinder or at the joint of the guide seat, causing blockage.
[0008] The present invention is implemented as follows: a water-fertilizer ratio control device includes a mixing cylinder, a weighing cylinder fixedly connected to the mixing cylinder, a weighing component disposed in the weighing cylinder, the weighing component being capable of weighing the liquid fertilizer in the weighing cylinder, a guide seat disposed at the top of the weighing component, the guide seat being slidably and sealingly connected to the inner wall of the weighing cylinder, a conical groove disposed in the middle of the guide seat, a discharge pipe fixedly connected to the guide seat, and a shut-off valve disposed on the discharge pipe;
[0009] A separator component is fixedly installed in the weighing cylinder. A flow chamber is formed between the separator component and the guide seat, and a guide groove is formed between the separator component and the inner wall of the weighing cylinder. The separator component can guide and concentrate the particulate matter in the liquid fertilizer to the center of the guide seat. The weighing cylinder is also connected to a cleaning mechanism, which can unclog and clean the separator component. The cleaning mechanism is connected to a filter component, which is set in the flow chamber. The filter component can filter and intercept suspended solids. When the liquid fertilizer is discharged, the cleaning mechanism can guide the liquid fertilizer in cooperation with the filter component, so that the solvent in the liquid fertilizer enters the flow chamber from the guide groove after being filtered by the separator component, and the solvent in the liquid fertilizer washes the particulate matter from the inside of the flow chamber.
[0010] In a further technical solution, the weighing assembly includes a base, a sliding connecting sleeve, a tray, and a spring;
[0011] The base is fixedly connected to the inner wall of the weighing cylinder. A sliding connecting sleeve is fixedly connected to the base. A tray is fixedly connected to the telescopic end of the sliding connecting sleeve. A spring is sleeved on the outside of the sliding connecting sleeve. A pressure sensor is provided at the connection between the spring and the tray.
[0012] In a further technical solution, the separating component includes a conical separating sleeve and a first annular mesh sleeve. The conical separating sleeve is fixedly connected to the weighing cylinder, and the conical separating sleeve has the same inclination angle as the conical groove on the guide seat. A flow passage cavity is formed between the conical separating sleeve and the guide seat. A first annular mesh sleeve is fixedly connected to the conical separating sleeve, and a flow guide groove is formed between the first annular mesh sleeve and the inner wall of the weighing cylinder. The flow guide groove is connected to the flow passage cavity.
[0013] A further technical solution is that the cleaning mechanism includes a motor, a rotating shaft, a connecting rod, a first guide plate, and a brush strip;
[0014] The motor is fixedly connected to the upper end face of the weighing cylinder. The output shaft of the motor is fixedly connected to a rotating shaft. The rotating shaft is fixedly connected to multiple connecting rods. Each connecting rod is rotatably connected to a first guide plate through an elastic torsion spring. A brush strip is fixedly connected to one end of the first guide plate near the first annular mesh sleeve.
[0015] A further technical solution is that the filter assembly includes a support frame, a second annular mesh sleeve, and a second guide plate;
[0016] The support frame is fixedly connected to the rotating shaft, and the support frame is fixedly connected to a second annular mesh sleeve. The second annular mesh sleeve is fixedly connected to multiple second guide plates along the annular ring. All second guide plates are inclined around the rotating shaft in the same direction of rotation. All first guide plates are inclined around the rotating shaft in the same direction of rotation, and the inclination directions of the first guide plates are opposite to those of the second guide plates.
[0017] In a further technical solution, the weighing cylinder is connected to a feed pipe, the outlet of which is above the first annular mesh sleeve and faces the inside of the first annular mesh sleeve.
[0018] A further technical solution is that multiple fixing frames are fixedly connected to the outer wall of the weighing cylinder at equal intervals. A first visual monitor is fixedly installed on each fixing frame at the position of the first annular mesh sleeve, and a second visual monitor is installed on each fixing frame at the position of the flow cavity.
[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0020] Dynamic flow and concentration of particulate matter: Through the synergistic effect of the conical partition sleeve and the No. 1 annular mesh sleeve, the particulate matter in the liquid fertilizer is forced to concentrate in the middle of the guide seat, effectively avoiding the deposition of particulate matter on the inner wall or at the joint of the weighing cylinder, eliminating the problem of increased sliding resistance of the guide seat caused by particulate matter jamming, and ensuring weighing accuracy.
[0021] Self-cleaning and anti-clogging design: Firstly, a two-way rotating cleaning mechanism: Clockwise rotation: The motor drives the No. 1 guide plate to move the brush strip to stick to the inner wall of the No. 1 annular mesh sleeve, automatically scraping off the adhering particles; Counterclockwise rotation: The No. 2 guide plate accelerates the flow rate of the solvent from the guide channel to the flow chamber, forming a directional flushing force to dissolve and discharge the clumped particles; Secondly, dynamic filtration: The filter component intercepts particles simultaneously during the fertilizer discharge process, combined with solvent backflushing, to thoroughly solve the problem of dead corner residue.
[0022] Weighing accuracy guaranteed: The separator isolates particles from the inner wall of the weighing cylinder, preventing residue from interfering with the pressure sensing data of the weighing component. The conical groove design of the guide seat accelerates the concentrated discharge of particles, reduces residue after weighing, and ensures accurate proportioning every time.
[0023] Intelligent monitoring and on-demand cleaning: The No. 1 visual monitor detects the area of particulate matter shadows on the surface of the No. 1 annular mesh sleeve in real time, while the No. 2 visual monitor monitors the accumulation status inside the flow cavity; the cleaning mechanism is automatically triggered based on the monitoring data, achieving precise and efficient on-demand maintenance and avoiding excessive downtime.
[0024] Maintenance efficiency is significantly improved: self-cleaning can be completed without disassembling the equipment, solving the pain point of traditional equipment relying on manual shutdown for cleaning; the solvent circulation flushing mechanism greatly reduces the risk of particulate matter caking, extends the continuous operation cycle of the equipment, and reduces the frequency of maintenance.
[0025] Structural synergistic optimization: The No. 1 and No. 2 guide vanes adopt an opposite tilt design, which realizes the scraping and guiding pressurization functions respectively in bidirectional rotation, thereby improving the solvent flushing efficiency; the No. 1 annular mesh sleeve physically isolates particulate matter from the cylinder wall joint, preventing blockage from the source. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the present invention;
[0027] Figure 2 This is a schematic diagram of the internal structure of the weighing cylinder in this invention;
[0028] Figure 3 for Figure 2 The front view;
[0029] Figure 4 This is a schematic diagram of the weighing assembly.
[0030] Figure 5 This is a structural diagram of the cleaning mechanism;
[0031] Figure 6 for Figure 5 Top view;
[0032] Figure 7 This is a schematic diagram of the filter assembly.
[0033] In the attached diagram: 1. Mixing cylinder; 2. Weighing cylinder; 3. Weighing assembly; 31. Base; 32. Sliding connecting sleeve; 33. Tray; 34. Spring; 4. Guide seat; 5. Separating assembly; 51. Conical separating sleeve; 52. No. 1 annular mesh sleeve; 6. Cleaning mechanism; 61. Motor; 62. Rotating shaft; 63. Connecting rod; 64. No. 1 guide plate; 65. Brush strip; 7. Filter assembly; 71. Support frame; 72. No. 2 annular mesh sleeve; 73. No. 2 guide plate; 8. No. 1 vision monitor; 9. No. 2 vision monitor; 10. Discharge pipe; 11. Fixing frame; 12. Flow chamber; 13. Guide groove; 14. Feed pipe. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0035] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.
[0036] like Figures 1-7 As shown, a water-fertilizer ratio control device according to an embodiment of the present invention includes a mixing cylinder 1, a weighing cylinder 2 fixedly connected to the mixing cylinder 1, a weighing component 3 provided in the weighing cylinder 2, the weighing component 3 being able to weigh the liquid fertilizer in the weighing cylinder 2, a guide seat 4 provided at the top of the weighing component 3, the guide seat 4 being slidably and sealingly connected to the inner wall of the weighing cylinder 2, a conical groove provided in the middle of the guide seat 4, a discharge pipe 10 fixedly connected to the guide seat 4, and a shut-off valve provided on the discharge pipe 10;
[0037] A separator component 5 is fixedly installed in the weighing cylinder 2. A flow cavity 12 is formed between the separator component 5 and the guide seat 4, and a guide groove 13 is formed between the separator component 5 and the inner wall of the weighing cylinder 2. The separator component 5 can guide and concentrate the particulate matter in the liquid fertilizer to the center of the guide seat 4. The weighing cylinder 2 is also connected to a cleaning mechanism 6, which can unclog and clean the separator component 5. The cleaning mechanism 6 is connected to a filter component 7, which is set in the flow cavity 12. The filter component 7 can filter and intercept suspended matter. When the liquid fertilizer is discharged, the cleaning mechanism 6 can guide the liquid fertilizer in cooperation with the filter component 7, so that the solvent in the liquid fertilizer enters the flow cavity 12 from the guide groove 13 after being filtered by the separator component 5, and the solvent in the liquid fertilizer washes the particulate matter from the inside of the flow cavity 12.
[0038] In this embodiment, a certain amount of clean water is added to the mixing cylinder 1, and liquid fertilizer is added to the weighing cylinder 2. Under the separation of the separating component 5, the particles in the liquid fertilizer can be prevented from contacting the inner wall of the weighing cylinder 2, and the particles in the liquid fertilizer can be concentrated at the feed seat 4.
[0039] The weighing component 3 can weigh the liquid fertilizer entering the weighing cylinder 2, and the filtering component 7 can filter and intercept the particulate matter entering the flow chamber 12, so as to prevent the particulate matter from adhering to the joint between the guide seat 4 and the inner wall of the weighing cylinder 2, which would cause the guide seat 4 and the weighing cylinder 2 to get stuck and cause the measurement accuracy of the weighing component 3 to decrease.
[0040] When the liquid fertilizer in the weighing cylinder 2 reaches the set weight, the flow of liquid fertilizer into the weighing cylinder 2 is stopped. At this time, the shut-off valve on the discharge pipe 10 is opened, and the liquid fertilizer in the weighing cylinder 2 is discharged outward. The cleaning mechanism 6 can unclog and clean the separating component 5 to prevent particulate matter in the liquid fertilizer from remaining in the weighing cylinder 2. At the same time, the cleaning mechanism 6 can guide the liquid fertilizer in cooperation with the filter component 7, so that the solvent in the liquid fertilizer enters the flow passage 12 from the guide groove 13 after being filtered by the separating component 5. The solvent in the liquid fertilizer washes the particulate matter from the inside of the flow passage 12 to prevent particulate matter from remaining in the flow passage 12. The solvent can also flush the particulate matter at the joint between the guide seat 4 and the weighing cylinder 2 to prevent particulate matter from getting stuck and forming frictional resistance between the guide seat 4 and the weighing cylinder 2, thereby affecting the detection accuracy of the weighing component 3.
[0041] With the cooperation of the guide seat 4, the separator 5 and the cleaning mechanism 6, the particles in the weighing cylinder 2 can be fully discharged, avoiding the accumulation of particles in the weighing cylinder 2.
[0042] like Figure 4As shown, in a preferred embodiment of the present invention, the weighing assembly 3 includes a base 31, a sliding connecting sleeve 32, a tray 33, and a spring 34;
[0043] The base 31 is fixedly connected to the inner wall of the weighing cylinder 2. A sliding connecting sleeve 32 is fixedly connected in the base 31. A tray 33 is fixedly connected to the telescopic end of the sliding connecting sleeve 32. A spring 34 is sleeved on the outside of the sliding connecting sleeve 32. A pressure sensor is provided at the connection between the spring 34 and the tray 33.
[0044] In this embodiment, since the guide seat 4 and the discharge pipe 10 are fixedly connected to the tray 33, the weight of the pressure sensor is set as the reference weight when there is no liquid fertilizer. When liquid fertilizer enters the weighing cylinder 2, the liquid fertilizer accumulates on the upper side of the tray 33. Since the guide seat 4 is provided with a conical groove in the middle, the particles in the liquid fertilizer are concentrated in the middle of the guide seat 4, which is conducive to the rapid discharge of particles when the discharge pipe 10 is open.
[0045] like Figure 3 As shown, in a preferred embodiment of the present invention, the separating component 5 includes a conical separating sleeve 51 and a first annular mesh sleeve 52. The conical separating sleeve 51 is fixedly connected to the weighing cylinder 2. The conical separating sleeve 51 has the same inclination angle as the conical groove on the guide seat 4. A flow passage cavity 12 is formed between the conical separating sleeve 51 and the guide seat 4. The first annular mesh sleeve 52 is fixedly connected to the conical separating sleeve 51. A flow guide groove 13 is formed between the first annular mesh sleeve 52 and the inner wall of the weighing cylinder 2. The flow guide groove 13 is in communication with the flow passage cavity 12.
[0046] In this embodiment, when the liquid fertilizer is poured into the weighing cylinder 2, it falls into the first annular mesh sleeve 52. The first annular mesh sleeve 52 can prevent the liquid fertilizer from contacting and adhering to the inside of the weighing cylinder 2. The solvent in the liquid fertilizer enters the guide groove 13. When the particles in the liquid fertilizer settle, the conical partition sleeve 51 can concentrate the particles in the liquid fertilizer towards the center. When the particles fall from the conical partition sleeve 51, if the particles diffuse into the flow cavity 12, the cleaning mechanism 6 can filter and intercept the particles. Through the cooperation of the first annular mesh sleeve 52, the guide seat 4, and the cleaning mechanism 6, the joint between the guide seat 4 and the inner wall of the weighing cylinder 2 can be protected to prevent particles from getting stuck and causing frictional resistance between the guide seat 4 and the inner wall of the weighing cylinder 2, thereby affecting the detection accuracy of the weighing component 3.
[0047] like Figure 5 As shown, in a preferred embodiment of the present invention, the cleaning mechanism 6 includes a motor 61, a rotating shaft 62, a connecting rod 63, a first guide plate 64, and a brush strip 65;
[0048] The motor 61 is fixedly connected to the upper end face of the weighing cylinder 2. The output shaft of the motor 61 is fixedly connected to a rotating shaft 62. The rotating shaft 62 is fixedly connected to multiple connecting rods 63. Each connecting rod 63 is rotatably connected to a first guide plate 64 through an elastic torsion spring. A brush strip 65 is fixedly connected to one end of the first guide plate 64 near the first annular mesh sleeve 52.
[0049] In this embodiment, when there are many particles adhering to the inner side of the No. 1 annular mesh sleeve 52, the start motor 61 drives the rotating shaft 62 to rotate clockwise. The rotating shaft 62 drives all the connecting rods 63 to rotate, and all the connecting rods 63 drive all the No. 1 guide plates 64 to rotate clockwise. Since the linear velocity of the No. 1 guide plate 64 near the end of the No. 1 annular mesh sleeve 52 is relatively large, under the action of the water flow thrust, all the No. 1 guide plates 64 rotate counterclockwise around the corresponding connecting rods 63. The No. 1 guide plate 64 drives the brush strip 65 to further adhere to the surface of the No. 1 annular mesh sleeve 52. The brush strip 65 cleans the particles on the inner surface of the No. 1 annular mesh sleeve 52 to prevent particles from remaining in the weighing cylinder 2.
[0050] like Figure 7 As shown, in a preferred embodiment of the present invention, the filter assembly 7 includes a support frame 71, a second annular mesh sleeve 72, and a second guide plate 73.
[0051] The support frame 71 is fixedly connected to the rotating shaft 62. The support frame 71 is fixedly connected to a second annular mesh sleeve 72. The second annular mesh sleeve 72 is fixedly connected to multiple second guide plates 73 along the annular axis. All second guide plates 73 are inclined around the rotating shaft 62 in the same direction of rotation. All first guide plates 64 are inclined around the rotating shaft 62 in the same direction of rotation, and the inclination direction of the first guide plates 64 is opposite to that of the second guide plates 73.
[0052] In this embodiment, when a large amount of particulate matter accumulates inside the flow cavity 12, the motor 61 is started to drive the rotating shaft 62 to rotate counterclockwise. The rotating shaft 62 drives all the connecting rods 63 to rotate, and all the connecting rods 63 drive all the first guide plates 64 to rotate clockwise. This creates a certain gap between the first guide plate 64 and the inner surface of the first annular mesh sleeve 52. Under the push of the first guide plate 64, the liquid fertilizer inside the first annular mesh sleeve 52 is discharged into the guide channel 13. At this time, the rotating shaft 61... 2. The support frame 71 and the second annular mesh sleeve 72 drive all the second guide plates 73 to rotate counterclockwise. Since the first guide plate 64 and the second guide plate 73 are tilted in opposite directions, the flow rate of the solvent in the guide channel 13 into the flow cavity 12 increases under the thrust of the second guide plate 73. Under the flushing of the solvent, the particles accumulated inside the flow cavity 12 can be flushed, so that the particles in the flow cavity 12 can be discharged quickly.
[0053] like Figure 2As shown, in a preferred embodiment of the present invention, the weighing cylinder 2 is connected to a feed pipe 14, the outlet of the feed pipe 14 is above the first annular mesh sleeve 52, and the outlet of the feed pipe 14 is directly facing the inside of the first annular mesh sleeve 52.
[0054] like Figure 1 As shown, in a preferred embodiment of the present invention, the outer wall of the weighing cylinder 2 is fixedly connected with multiple fixing frames 11 at equal intervals. Each fixing frame 11 is fixedly provided with a first visual monitor 8 at the position directly opposite the first annular mesh sleeve 52, and each fixing frame 11 is provided with a second visual monitor 9 at the position directly opposite the flow cavity 12.
[0055] In this embodiment, the shadow area on the first annular mesh sleeve 52 is detected by all first vision monitors 8, and the shadow area in the flow cavity 12 is detected by all second vision monitors 9. When a large amount of particulate matter accumulates in the first annular mesh sleeve 52 or the flow cavity 12, the shadow area in the area monitored by the first vision monitor 8 or the second vision monitor 9 increases. Based on the detection results of the first vision monitor 8 or the second vision monitor 9, the cleaning mechanism 6 is activated to clean the particulate matter in the corresponding area, thereby improving the discharge effect of liquid fertilizer in the weighing cylinder 2.
[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A water-fertilizer ratio control device, comprising a mixing cylinder (1), wherein a weighing cylinder (2) is fixedly connected to the mixing cylinder (1), characterized in that, The weighing cylinder (2) is provided with a weighing component (3), which can weigh the liquid fertilizer in the weighing cylinder (2). The top of the weighing component (3) is provided with a guide seat (4), which slides and seals against the inner wall of the weighing cylinder (2). The middle part of the guide seat (4) is provided with a conical groove. The guide seat (4) is fixedly connected with a discharge pipe (10), and a shut-off valve is provided on the discharge pipe (10). A separator component (5) is fixedly installed in the weighing cylinder (2). A flow cavity (12) is formed between the separator component (5) and the guide seat (4), and a guide groove (13) is formed between the separator component (5) and the inner wall of the weighing cylinder (2). The separator component (5) can guide and concentrate the particles in the liquid fertilizer to the middle of the guide seat (4). The weighing cylinder (2) is also connected to a cleaning mechanism (6). The cleaning mechanism (6) can unclog and clean the separator component (5). 6) A filter assembly (7) is connected. The filter assembly (7) is set in the flow chamber (12). The filter assembly (7) can filter and intercept suspended matter. When the liquid fertilizer is discharged, the cleaning mechanism (6) can guide the liquid fertilizer in cooperation with the filter assembly (7), so that the solvent in the liquid fertilizer enters the flow chamber (12) from the guide groove (13) after being filtered by the separator assembly (5), and the solvent in the liquid fertilizer washes the particulate matter from the inside of the flow chamber (12).
2. The water-fertilizer ratio control device according to claim 1, characterized in that, The weighing assembly (3) includes a base (31), a sliding connecting sleeve (32), a tray (33), and a spring (34). The base (31) is fixedly connected to the inner wall of the weighing cylinder (2). A sliding connecting sleeve (32) is fixedly connected in the base (31). A tray (33) is fixedly connected to the telescopic end of the sliding connecting sleeve (32). A spring (34) is sleeved on the outside of the sliding connecting sleeve (32). A pressure sensor is provided at the connection between the spring (34) and the tray (33).
3. The water-fertilizer ratio control device according to claim 1, characterized in that, The separating component (5) includes a conical separating sleeve (51) and a first annular mesh sleeve (52). The conical separating sleeve (51) is fixedly connected to the weighing cylinder (2). The conical separating sleeve (51) has the same inclination angle as the conical groove on the guide seat (4). A flow passage cavity (12) is formed between the conical separating sleeve (51) and the guide seat (4). A first annular mesh sleeve (52) is fixedly connected to the conical separating sleeve (51). A flow guide groove (13) is formed between the first annular mesh sleeve (52) and the inner wall of the weighing cylinder (2). The flow guide groove (13) is connected to the flow passage cavity (12).
4. The water-fertilizer ratio control device according to claim 1, characterized in that, The cleaning mechanism (6) includes a motor (61), a rotating shaft (62), a connecting rod (63), a first guide plate (64), and a brush strip (65). The motor (61) is fixedly connected to the upper end face of the weighing cylinder (2). The output shaft of the motor (61) is fixedly connected to a rotating shaft (62). The rotating shaft (62) is fixedly connected to multiple connecting rods (63). Each connecting rod (63) is rotatably connected to a first guide plate (64) through an elastic torsion spring. A brush strip (65) is fixedly connected to one end of the first guide plate (64) near the first annular mesh sleeve (52).
5. The water-fertilizer ratio regulating device according to claim 4, characterized in that, The filter assembly (7) includes a support frame (71), a second annular mesh sleeve (72), and a second guide plate (73); The support frame (71) is fixedly connected to the rotating shaft (62). The support frame (71) is fixedly connected to a second annular mesh sleeve (72). The second annular mesh sleeve (72) is fixedly connected to multiple second guide plates (73) along the annular ring. All second guide plates (73) are inclined around the rotating shaft (62) in the same rotation direction.
6. The water-fertilizer ratio regulating device according to claim 5, characterized in that, All the first guide vanes (64) are tilted around the axis (62) in the same direction of rotation, and the tilting directions of the first guide vane (64) and the second guide vane (73) are opposite.
7. The water-fertilizer ratio control device according to claim 1, characterized in that, The outer wall of the weighing cylinder (2) is fixedly connected with multiple fixed frames (11) at equal intervals. Each fixed frame (11) is fixedly equipped with a first visual monitor (8) at the position directly opposite the first annular mesh sleeve (52), and each fixed frame (11) is equipped with a second visual monitor (9) at the position directly opposite the flow cavity (12).