Multifunctional water and fertilizer mixing device

Abstract

The utility model relates to the technical field of water and fertilizer mixing, and discloses a multifunctional water and fertilizer mixing device which comprises a material box, a material injection opening is formed in the top end of the material box, a hose is arranged in the material box, one part of the hose penetrates through the material box through the material injection opening, and a quick connector is fixedly connected to the top end of the hose. And a stirring assembly is arranged at the bottom end of the hose. According to the multifunctional water and fertilizer mixing device, through cooperation of the material box, the material injection opening, the hose, the quick connector and the stirring assembly, the requirements of crops for water and nutrients are met, liquid in the shell can flow from bottom to top during the period that suction force is generated at the bottom end of the hose, and the flowing liquid generates impact acting force on the impeller in the process; the impeller, the cylinder and the sleeve are rotated, the two stirring blades rotate with the sleeve as the center, a water and fertilizer solution in the material box is stirred, water and fertilizer are fully mixed, solid-liquid layering is not prone to occurring in the sprinkling irrigation operation period, and high-quality fertilization operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of water-fertilizer mixing, in particular to a multifunctional water-fertilizer mixing device. Background Art

[0002] Irrigation and fertilization are the collective term for water and fertilizer in agricultural production. Specifically, it refers to the agricultural management practice of supplying water and nutrients (fertilizer) to plants simultaneously or in stages during crop growth, either through irrigation systems or manual methods, to meet their growth and development needs. The application of water and fertilizer is a crucial step in agricultural production, directly impacting crop growth and yield. Specific methods of water and fertilizer application include drip irrigation, infiltration irrigation, and sprinkler irrigation. Sprinkler irrigation uses sprinklers to evenly distribute water and fertilizer onto crops, and is suitable for large areas of farmland and lawns.

[0003] The water and fertilizer sprinkler irrigation device uses a pressure system (such as a water pump) to pass the water and fertilizer solution through the pipe body and then uses the nozzle to spray the solution into atomized or fine streams onto the crop canopy and soil surface to meet the crop's needs for water and nutrients.

[0004] Currently, the pipes that extract the fertilizer solution from the tank lack the ability to stir it. During irrigation, the solution remains in the tank for a period of time, during which time solid-liquid stratification can occur, hindering high-quality fertilization. Furthermore, if the fertilizer particles in the solution are not fully dissolved, there's a high chance they will clog the sprinkler nozzles during subsequent irrigation, hindering smooth irrigation. Utility Model Content

[0005] The purpose of the utility model is to provide a multifunctional water-fertilizer mixing device, in which the pipe body for extracting the water-fertilizer solution from the material box has a mixing function, solid-liquid stratification is not easy to occur during the sprinkler irrigation operation, and high-quality fertilization operations are facilitated to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multifunctional water-fertilizer mixing device, comprising: a material box, a material injection port is provided at the top of the material box, a hose is provided inside the material box, a part of the hose passes through the material box through the material injection port, a quick connector is fixedly connected to the top of the hose, a stirring assembly is provided at the bottom end of the hose, the stirring assembly comprises: a shell, the shell is fixedly connected to the bottom end of the hose, an impeller is provided inside the shell, a cylinder is concentrically fixed to the bottom end of the impeller, the cylinder is rotatably connected to the shell through a sealed bearing, a plurality of water outlet holes are opened in an annular shape above the outer wall of the cylinder, a sleeve is fixedly sleeved on the outer wall of the cylinder, and a pair of stirring blades are connected to the outer wall of the sleeve.

[0007] Preferably, the stirring blade is connected to the sleeve through a connecting assembly, and the connecting assembly includes: a pair of transverse cylinders, the pair of transverse cylinders are respectively fixed to the ends of a pair of stirring blades close to the sleeve, a transverse rod is provided inside the transverse cylinder, the transverse rod is fixedly connected to the sleeve, the end of the transverse rod away from the sleeve is fixedly connected to a tension spring, the end of the tension spring away from the transverse rod is fixedly connected to the transverse cylinder, a pair of sliding grooves are opened on the outer wall of the transverse rod, a slider is slidably connected to the inside of the sliding groove, and the slider is fixedly connected to the transverse cylinder.

[0008] Preferably, a soft ring is fixedly connected to the end of the transverse tube close to the sleeve, and the soft ring fits against the outer wall of the transverse rod.

[0009] Preferably, a filter assembly is provided at the bottom end of the hose, and the filter assembly includes: a cavity plate, the cavity plate is rotatably connected to the bottom end of the outer wall of the cylinder, the bottom end of the cavity plate is provided with a patch plate, a plurality of liquid suction holes are evenly opened on the surface of the patch plate, and insertion rods are fixed to the four corners of the upper surface of the patch plate, and the insertion rods are connected to the cavity plate through the insertion hole, and a filter plate is provided at the top of the liquid suction hole.

[0010] Preferably, a pressure ring is pressed against the upper surface of the filter plate, and a plurality of bolts are inserted into the upper surface of the pressure ring. The bolts sequentially penetrate the pressure ring and the filter plate and are connected to the plate thread.

[0011] Preferably, convex balls are fixed to the four corners of the lower surface of the patch plate.

[0012] Preferably, the inner wall of the injection port is provided with a sealing assembly, and the sealing assembly includes: a butt ring, which is pressed against the inner wall of the injection port, a pair of discs are fixedly connected to the inner wall of the butt ring, a vertical cylinder is fixedly connected to the inner wall of the disc, the inner wall of the vertical cylinder is fixedly connected to the hose, a pressure relief valve is fixedly connected to one side of the upper surface of the disc, and a valve is fixedly connected to the other side of the upper surface of the disc, and the top of the valve is fixedly connected to a pagoda joint.

[0013] Preferably, a spiral blade is fixed to the inner wall of the cylinder.

[0014] Compared with the existing technology, the beneficial effects of the present invention are: the multifunctional water-fertilizer mixing device has the following advantages over the traditional technology:

[0015] Through the coordination between the material box, the material injection port, the hose, the quick connector and the stirring assembly, the user first injects an appropriate amount of water-fertilizer solution into the material box through the material injection port, uses the quick connector to connect the hose to the external pumping device, starts the pumping device to generate suction at the bottom of the hose, sucks out the water-fertilizer solution and sprays it to the crop canopy and soil surface through the external nozzle to meet the crop's needs for water and nutrients. During the period when suction is generated at the bottom of the hose, the liquid inside the shell can flow from bottom to top. In this process, the flowing liquid generates an impact force on the impeller, causing the impeller, cylinder and sleeve to rotate. The two stirring blades rotate with the sleeve as the center to stir the water-fertilizer solution inside the material box, so that the water and fertilizer are fully mixed. Solid-liquid stratification is not easy to occur during the sprinkler irrigation operation, which facilitates the implementation of high-quality fertilization operations.

[0016] Through the coordination among the material box, material injection port, hose, quick connector, stirring assembly and connecting assembly, when the stirring blade revolves around the sleeve, the stirring blade is affected by the centrifugal force of rotation, causing the cross cylinder to move away from the sleeve on the outer wall of the cross bar, thereby increasing the stirring outer diameter of the stirring blade, thereby facilitating high-quality mixing and stirring of the water-fertilizer solution in the material box.

[0017] Through the cooperation between the material box, the material injection port, the hose, the quick connector, the stirring assembly and the filter assembly, suction is generated at the bottom end of the hose to suck in the water and fertilizer solution in the material box. When the solution in the material box is filtered by the filter plate before entering the inside of the hose, it can prevent the fertilizer particles that are not fully dissolved in the water and fertilizer solution from being sucked in. In the subsequent sprinkler irrigation process, it can prevent the fertilizer particles from clogging the sprinkler head, which facilitates the smooth implementation of water and fertilizer sprinkler irrigation. In addition, there are multiple suction holes, which are not easy to be blocked at the same time. After long-term use, the rod can be pulled out from the inside of the socket to separate the sticking plate from the cavity plate, so as to facilitate the full cleaning of the filter plate. In addition, the bolt can be turned counterclockwise to remove the pressure ring and replace the filter plate for subsequent normal and high-quality use.

[0018] Through the coordination among the material box, the injection port, the hose and the sealing assembly, after the hose is partially inserted into the material box, the butt ring is located at the inner wall of the injection port, the pagoda joint is connected to the external air supply pipe, and high-pressure air is injected into the butt ring. The internal air pressure of the butt ring increases and the volume expands, and it is pressed tightly against the inner wall of the injection port to achieve the sealing operation of the injection port. During this period, the size of the volume expansion of the butt ring can be controlled by the amount of high-pressure air injected, so that it can adapt to the use of injection ports of different inner diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the originals and elements are not necessarily drawn to scale.

[0020] Figure 1This is a schematic diagram of the structure of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the connection structure of the intermediate material box, hose and retaining ring;

[0022] Figure 3 for Figure 1 Schematic diagram of the connection structure of the middle hose, shell and cavity plate;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0025] Figure 6 for Figure 5 Top view of the middle filter plate, pressure ring and bolts;

[0026] Figure 7 for Figure 3 Top sectional view of the middle cylinder.

[0027] In the figure: 1, material box, 2, filling port, 3, hose, 4, quick connector, 5, shell, 6, impeller, 7, cylinder, 8, water outlet, 9, sleeve, 10, stirring blade, 11, horizontal cylinder, 12, cross bar, 13, tension spring, 14, slide, 15, slider, 16, soft ring, 17, cavity plate, 18, sticking plate, 19, suction hole, 20, plug rod, 21, jack, 22, filter plate, 23, pressure ring, 24, bolt, 25, convex ball, 26, retaining ring, 27, disc, 28, vertical cylinder, 29, pressure relief valve, 30, spiral blade, 31, valve, 32, pagoda joint. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 7The utility model provides a technical solution: a multifunctional water-fertilizer mixing device, comprising: a material box 1, a material injection port 2 is provided at the top of the material box 1, a hose 3 is provided inside the material box 1, a part of the hose 3 passes through the material box 1 through the material injection port 2, a quick connector 4 is fixedly connected to the top of the hose 3, a stirring assembly is provided at the bottom end of the hose 3, and the stirring assembly comprises: a shell 5, the shell 5 is fixed to the bottom end of the hose 3, an impeller 6 is provided inside the shell 5, a cylinder 7 is concentrically fixed to the bottom end of the impeller 6, the cylinder 7 is rotatably connected to the shell 5 through a sealed bearing, a plurality of water outlet holes 8 are opened in an annular shape on the upper outer wall of the cylinder 7, a sleeve 9 is fixedly sleeved on the outer wall of the cylinder 7, and a pair of stirring blades 10 are connected to the outer wall of the sleeve 9.

[0030] During the specific implementation process, it is worth noting that the material box 1 is a container for holding water and fertilizer solution, the injection port 2 is used to inject the water and fertilizer solution into the interior of the material box 1, the hose 3 is a PU hose, the length of the hose 3 is long enough, and the quick connector 4 is used to connect the top of the hose 3 to the feed port of the external liquid pumping device. The quick connector 4 is a connector that can connect or disconnect the pipeline without tools. It can quickly and conveniently connect and separate fluid delivery pipelines in a short time. It is widely used in various occasions that require frequent disassembly and assembly of pipelines to save time and labor costs and improve work efficiency. The quick connector usually consists of two parts, a male connector and a female connector. When the male connector is inserted into the female connector, the front end of the male connector will squeeze the steel ball inside the female connector, causing the steel ball to move outward, while the male connector continues to go deeper. When it reaches a certain position Afterwards, the steel ball will rebound under the action of the spring and get stuck in the slot on the male connector, thereby realizing the locking connection between the male connector and the female connector. At this time, the sealing ring inside the connector will fit tightly to prevent fluid leakage. The impeller 6 is composed of multiple curved blades. The shape of the blades (such as spiral, airfoil) can guide the flow direction of the fluid (such as air, water). When the fluid flows through the blades, the surface of the blades is subjected to the combined effect of lift and resistance. When the fluid flows through the curved surface of the blades, the difference in flow velocity between the upper and lower surfaces causes a pressure difference, generating a force perpendicular to the flow direction (similar to the principle of an airplane wing). The fluid directly impacts the blades to generate a force parallel to the flow direction. The resultant force on the blades generates a rotational torque, which drives the impeller to rotate around the axis. The interior of the shell 5 is interconnected with the interior of the hose 3 and the cylinder 7, and the water outlet 8 is interconnected with the interior of the cylinder 7.

[0031] Furthermore, the stirring blade 10 is connected to the sleeve 9 through a connecting assembly, and the connecting assembly includes: a pair of transverse cylinders 11, a pair of transverse cylinders 11 are respectively fixed to the ends of a pair of stirring blades 10 close to the sleeve 9, a transverse rod 12 is provided inside the transverse cylinder 11, the transverse rod 12 is fixedly connected to the sleeve 9, the end of the transverse rod 12 away from the sleeve 9 is fixedly connected to a tension spring 13, the end of the tension spring 13 away from the transverse rod 12 is fixedly connected to the transverse cylinder 11, a pair of slide grooves 14 are opened on the outer wall of the transverse rod 12, and a slider 15 is slidably connected to the inside of the slide groove 14, and the slider 15 is fixedly connected to the transverse cylinder 11.

[0032] During the specific implementation process, it is worth noting that the outer wall of the cross bar 12 and the inner wall of the cross cylinder 11 are clearance-fitted. Clearance fit refers to a fit with a gap (including a minimum gap equal to zero). The elastic coefficient of the tension spring 13 is 0.2-2N / CM. The slider 15 can slide laterally inside the slide groove 14, but cannot be separated from the slide groove 14. During the period when the stirring blade 10 revolves around the sleeve 9, the stirring blade 10 is affected by the centrifugal force of the rotation, causing the cross cylinder 11 to move on the outer wall of the cross bar 12 away from the sleeve 9, increasing the stirring outer diameter of the stirring blade 10, and facilitating high-quality mixing and stirring of the water-fertilizer solution in the material box 1.

[0033] Furthermore, a soft ring 16 is fixedly connected to the end of the transverse tube 11 close to the sleeve 9 , and the soft ring 16 fits the outer wall of the transverse rod 12 .

[0034] During the specific implementation, it is worth noting that the soft ring 16 is made of fluororubber, has a certain flexibility, and can prevent external impurities from entering the interior of the horizontal cylinder 11.

[0035] Furthermore, a filter assembly is provided at the bottom end of the hose 3, and the filter assembly includes: a cavity plate 17, the cavity plate 17 is rotatably connected to the bottom end of the outer wall of the cylinder 7, and a patch plate 18 is provided at the bottom end of the cavity plate 17. A plurality of liquid suction holes 19 are evenly opened on the surface of the patch plate 18, and insertion rods 20 are fixed to the four corners of the upper surface of the patch plate 18. The insertion rods 20 are connected to the cavity plate 17 through the insertion hole 21, and a filter plate 22 is provided at the top of the liquid suction hole 19.

[0036] During the specific implementation process, it is worth noting that the cavity plate 17 is rotatably connected to the cylinder 7 through a sealed bearing, the filter plate 22 is a plate body with a surface covered with filter holes with a mesh size of 30-50 meshes, and the outer wall of the insertion rod 20 is tightly pressed against the inner wall of the insertion hole 21.

[0037] Furthermore, a pressure ring 23 is pressed against the upper surface of the filter plate 22 , and a plurality of bolts 24 are inserted into the upper surface of the pressure ring 23 . The bolts 24 pass through the pressure ring 23 and the filter plate 22 in sequence and are threadedly connected to the attachment plate 18 .

[0038] During the specific implementation, it is worth noting that the pressure ring 23 is removed by rotating the bolt 24 counterclockwise, and the filter plate 22 is replaced with a new one.

[0039] Furthermore, convex balls 25 are fixed to the four corners of the lower surface of the attachment plate 18 .

[0040] During the specific implementation process, it is worth noting that the convex ball 25 is made of solid metal material. After the bottom end of the convex ball 25 is fitted with the inner bottom end of the material box 1, a certain gap distance can be created between the lower surface of the patch 18 and the inner bottom end of the material box 1, which facilitates the suction hole 19 to absorb the water fertilizer solution inside the material box 1.

[0041] Furthermore, a sealing assembly is provided on the inner wall of the injection port 2, and the sealing assembly includes: a butt ring 26, which is pressed against the inner wall of the injection port 2, a pair of discs 27 are fixedly connected to the inner wall of the butt ring 26, a vertical cylinder 28 is fixedly connected to the inner wall of the disc 27, and the inner wall of the vertical cylinder 28 is fixedly connected to the hose 3, a pressure relief valve 29 is fixedly connected to one side of the upper surface of the upper disc 27, and a valve 31 is fixedly connected to the other side of the upper surface of the upper disc 27, and a pagoda joint 32 is fixedly connected to the top of the valve 31.

[0042] During the specific implementation process, it is worth noting that the retaining ring 26 is made of fluororubber and has a certain flexibility. Its volume will expand when the internal air pressure increases, and its volume will shrink when the internal air pressure decreases. The pressure relief valve 29 is usually equipped with a spring and piston system (or valve core). When the system pressure exceeds the preset value, the pressure will overcome the resistance of the spring and push the piston or valve core to move, thereby opening the valve and releasing excess pressure. If too much air is injected due to operational error and the internal air pressure of the retaining ring 26 is greater than the set critical value of the pressure relief valve 29, the pressure relief valve 29 can discharge the air inside the retaining ring 26 to the outside, which can prevent the internal air pressure of the retaining ring 26 from being damaged, and facilitate long-term and safe use.

[0043] Furthermore, a spiral blade 30 is fixed to the inner wall of the cylinder 7 .

[0044] During the specific implementation process, it is worth noting that when the water flows through the cylinder 7, it will impact the spiral blades 30, generating a certain force on the spiral blades 30. Since the spiral blades 30 are arranged in a spiral shape, the tangential component force generated by the water flow impact can drive the spiral blades 30 to rotate, thereby providing a certain kinetic energy for the rotation of the cylinder 7.

[0045] Working principle:

[0046] Mixing operation of water-fertilizer solution in the material box:

[0047] The user first injects an appropriate amount of water-fertilizer solution into the material box 1 through the injection port 2, uses the quick connector 4 to connect the hose 3 to the external pumping device, starts the pumping device to generate suction at the bottom of the hose 3, sucks out the water-fertilizer solution, and sprays it to the crop canopy and soil surface through the external nozzle to meet the crop's needs for water and nutrients. During the period when suction is generated at the bottom of the hose 3, the liquid in the shell 5 can flow from bottom to top. In this process, the flowing liquid generates an impact force on the impeller 6, causing the impeller 6, cylinder 7 and sleeve 9 to rotate, and the two stirring blades 10 rotate around the sleeve 9 to stir the water-fertilizer solution inside the material box 1. During the period when the stirring blade 10 revolves around the sleeve 9, the stirring blade 10 is affected by the centrifugal force of the rotation, causing the cross cylinder 11 to move on the outer wall of the cross bar 12 away from the sleeve 9, increasing the stirring outer diameter of the stirring blade 10, facilitating high-quality mixing of the water-fertilizer solution in the material box 1, and preventing solid-liquid stratification from occurring during the sprinkler irrigation operation, thereby facilitating high-quality fertilization operations.

[0048] Filtration of water-fertilizer solution in the material box:

[0049] When suction is generated at the bottom end of the hose 3 to suck the water and fertilizer solution in the material box 1, the solution in the material box 1 will be filtered by the filter plate 22 before entering the interior of the hose 3, which can prevent the fertilizer particles that are not fully dissolved in the water and fertilizer solution from being sucked in. In the subsequent sprinkler irrigation process, the fertilizer particles can be prevented from clogging the sprinkler head, which facilitates the smooth implementation of water and fertilizer sprinkler irrigation. In addition, there are multiple suction holes 19, which are not easy to be blocked at the same time. After long-term use, the insertion rod 20 can be pulled out from the inside of the insertion hole 21 to separate the sticking plate 18 from the cavity plate 17, so as to facilitate the full cleaning of the filter plate 22. In addition, the bolt 24 can be turned counterclockwise to remove the pressure ring 23 and replace the filter plate 22 for subsequent normal and high-quality use.

[0050] Connection operation between hose and injection port:

[0051] After the hose 3 is partially inserted into the material box 1, the retaining ring 26 is located at the inner wall of the injection port 2, and the pagoda joint 32 is connected to the external air supply pipe. High-pressure air is injected into the retaining ring 26. The air pressure inside the retaining ring 26 increases and the volume expands, and it is tightly pressed against the inner wall of the injection port 2. Then the valve 31 is closed to realize the sealing operation of the injection port 2. During this period, the size of the volume expansion of the retaining ring 26 can be controlled by the amount of high-pressure air injected, so that it can be adapted to the use of injection ports 2 with different inner diameters. When taking it out later, the valve 31 is opened to emit high-pressure air, and the volume of the retaining ring 26 shrinks, and the retaining ring 26 can be taken out from the inside of the injection port 2.

[0052] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional water-fertilizer mixing device, comprising: A material box (1) is characterized in that: a material injection port (2) is provided at the top of the material box (1), a hose (3) is provided inside the material box (1), a part of the hose (3) passes through the material box (1) through the material injection port (2), a quick connector (4) is fixedly connected to the top of the hose (3), a stirring assembly is provided at the bottom end of the hose (3), and the stirring assembly comprises: a shell (5), the shell (5) is fixedly connected to the bottom end of the hose (3), an impeller (6) is provided inside the shell (5), a cylinder (7) is concentrically fixedly connected to the bottom end of the impeller (6), the cylinder (7) is rotatably connected to the shell (5) through a sealed bearing, a plurality of water outlet holes (8) are opened in an annular shape on the upper part of the outer wall of the cylinder (7), a sleeve (9) is fixedly sleeved on the outer wall of the cylinder (7), and a pair of stirring blades (10) are connected to the outer wall of the sleeve (9).

2. A multifunctional water-fertilizer mixing device according to claim 1, characterized in that: The stirring blade (10) is connected to the sleeve (9) through a connecting assembly, and the connecting assembly includes: a pair of transverse cylinders (11), the pair of transverse cylinders (11) are respectively fixed to the ends of the pair of stirring blades (10) close to the sleeve (9), a transverse rod (12) is provided inside the transverse cylinder (11), the transverse rod (12) is fixedly connected to the sleeve (9), the end of the transverse rod (12) away from the sleeve (9) is fixedly connected to a tension spring (13), the end of the tension spring (13) away from the transverse rod (12) is fixedly connected to the transverse cylinder (11), the outer wall of the transverse rod (12) is provided with a pair of sliding grooves (14), the interior of the sliding groove (14) is slidably connected to a slider (15), and the slider (15) is fixedly connected to the transverse cylinder (11).

3. A multifunctional water-fertilizer mixing device according to claim 2, characterized in that: A soft ring (16) is fixedly connected to the end of the transverse cylinder (11) close to the sleeve (9), and the soft ring (16) is in contact with the outer wall of the transverse rod (12).

4. A multifunctional water-fertilizer mixing device according to claim 1, characterized in that: The bottom end of the hose (3) is provided with a filter assembly, which includes: a cavity plate (17), the cavity plate (17) is rotatably connected to the bottom end of the outer wall of the cylinder (7), the bottom end of the cavity plate (17) is provided with a plate (18), the surface of the plate (18) is evenly provided with a plurality of liquid suction holes (19), the four corners of the upper surface of the plate (18) are fixed with plug rods (20), the plug rods (20) are plugged and connected to the cavity plate (17) through the plug hole (21), and the top of the liquid suction hole (19) is provided with a filter plate (22).

5. A multifunctional water-fertilizer mixing device according to claim 4, characterized in that: The upper surface of the filter plate (22) is pressed against a pressure ring (23), and a plurality of bolts (24) are inserted into the upper surface of the pressure ring (23). The bolts (24) sequentially penetrate the pressure ring (23) and the filter plate (22) and are threadedly connected to the plate (18).

6. A multifunctional water-fertilizer mixing device according to claim 4, characterized in that: The four corners of the lower surface of the patch plate (18) are fixedly connected with convex balls (25).

7. The multifunctional water-fertilizer mixing device according to claim 1, characterized in that: The inner wall of the injection port (2) is provided with a blocking component, and the blocking component includes: a butt ring (26), the butt ring (26) is pressed against the inner wall of the injection port (2), a pair of discs (27) are fixedly connected to the inner wall of the butt ring (26), a vertical cylinder (28) is fixedly connected to the inner wall of the disc (27), the inner wall of the vertical cylinder (28) is fixedly connected to the hose (3), a pressure relief valve (29) is fixedly connected to one side of the upper surface of the disc (27), a valve (31) is fixedly connected to the other side of the upper surface of the disc (27), and a pagoda connector (32) is fixedly connected to the top of the valve (31).

8. The multifunctional water-fertilizer mixing device according to claim 1, characterized in that: The inner wall of the cylinder (7) is fixedly connected with a spiral blade (30).

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