Water-soluble fertilizer stirring tank

Abstract

The present invention relates to a water-soluble fertilizer stirring tank, which comprises: a tank body, the top of which is provided with a top cover, and the top cover is provided with a water inlet and a material inlet; the support frame is fixedly mounted on the top cover of the tank body; the main shaft is vertically arranged in the tank body, and the upper end of the main shaft is rotationally connected with the top cover; the stirring blades are fixedly mounted on the main shaft; the motor is mounted on the supporting frame, and an output shaft of the motor is in transmission connection with the main shaft; and at least one piston pump. The piston pump and the stirring blade are driven by the same motor, so that a suction pipe and an output pipe of the piston pump respectively extend to the bottom and the top of the tank body, and high-concentration fertilizer liquid deposited at the bottom is forcibly pumped to the top for backflow while the stirring blade performs conventional mixing, so that severe convective circulation in the vertical direction is formed; therefore, the core problems of non-uniform mixing and non-uniform concentration of the upper layer and the lower layer caused by fertilizer deposition in the background technology are fundamentally solved, and the high uniformity of fertilizer liquid mixing is ensured.

Description

Technical Field

[0001] This invention relates to the field of waste processing technology, and in particular to a water-soluble fertilizer mixing tank. Background Technology

[0002] Integrated water and fertilizer management technology is an important means of achieving efficient irrigation and precision fertilization in modern agriculture. Its core lies in thoroughly mixing water-soluble fertilizers with water to form a uniform and stable fertilizer solution, ensuring that crops receive balanced nutrition during absorption. In this process, the mixing equipment is the key factor determining the mixing effect.

[0003] Currently, most common mixing equipment adopts the traditional mechanical agitator structure, mainly composed of a drive motor, a mixing shaft, and blades mounted on the shaft. During operation, the agitator extends into the storage container, relying on the rotating blades to agitate the liquid material. This type of equipment is widely used in many mixing applications due to its simple structure, low manufacturing cost, and strong adaptability.

[0004] However, in practical water-fertilizer mixing applications, such traditional mixing equipment has significant shortcomings. Because water-soluble fertilizers tend to quickly settle at the bottom of the container after being added to water, forming a deposit, the blades of traditional mixers primarily act on the bottom, causing the deposited fertilizer to only swirl around in the lower layer of the container, making it difficult to effectively lift it to the middle and upper layers. This mixing method easily produces bottom swirling, while the liquid in the middle and upper layers remains relatively still or has very weak flow, resulting in significant differences in fertilizer concentration at different levels within the container and low mixing uniformity. Furthermore, to improve the mixing effect, it is often necessary to extend the mixing time or repeat the mixing process multiple times, which increases energy consumption and time costs. Summary of the Invention

[0005] To address the problems of uneven mixing and easy sedimentation in existing water and fertilizer mixing equipment, this invention provides a mixing tank that can achieve efficient and uniform mixing and prevent fertilizer sedimentation, thereby improving the quality of fertilizer solution preparation and the efficiency of agricultural fertilization.

[0006] The technical solution is as follows: A water-soluble fertilizer mixing tank includes: a tank body with a top cover, the top cover having a water inlet and a feed inlet; a support frame fixedly installed on the top cover of the tank body; a main shaft vertically arranged inside the tank body, its upper end rotatably connected to the top cover; a stirring blade fixedly installed on the main shaft; a motor installed on the support frame, its output shaft being drively connected to the main shaft; at least one piston pump, the piston pump including: a cylinder body installed on the support frame; an inlet valve and an outlet valve respectively located at the inlet and outlet of the cylinder body; a suction pipe, one end of which is connected to the inlet valve of the cylinder body, and the other end extending to the bottom of the inner cavity of the tank body; an output pipe, one end of which is connected to the outlet valve of the cylinder body, and the other end extending to the top of the inner cavity of the tank body; a piston reciprocatingly arranged inside the cylinder body; a crank-connecting rod mechanism, the connecting rod of which is hinged to the piston, and its crankshaft being arranged between the output shaft of the motor and the main shaft.

[0007] Preferably, the stirring blades include at least one spiral stirring band.

[0008] Preferably, the stirring blades include a turbine inclined blade agitator, which includes: a central disc blade fixedly mounted on the main shaft; and multiple auxiliary blades fixed at intervals along the circumferential direction on the side of the central disc blade; wherein the longitudinal section of the auxiliary blades is an asymmetrical parabolic shape, and with the central disc blade as the boundary, the length of the upper section is greater than the length of the lower section.

[0009] Preferably, the end of the inhalation tube located at the bottom of the canister is connected to a flared guide tube.

[0010] Preferably, the opening direction of the flared guide tube is towards the rotation direction of the stirring blade.

[0011] Preferably, there are two piston pumps, and the two piston pumps are arranged symmetrically about the axis of the main shaft.

[0012] Preferably, the feed inlet is provided with a feed bin and an openable and closable sealing mechanism. The sealing mechanism includes: a slide rail pair disposed on the top cover; a sealing plate slidably connected to the slide rail pair for closing or opening the feed inlet; an elastic reset member disposed on one side of the sealing plate for providing an elastic force to close the feed inlet; and a trigger member disposed between the sealing plate and the crankshaft. When the crankshaft rotates to a specific position, the trigger member is pushed and drives the sealing plate to slide against the elastic force to open the feed inlet.

[0013] Preferably, the sealing plate has multiple vertically extending baffles on its upper surface facing the feed hopper, and the multiple baffles are inclined relative to the sliding direction of the sealing plate.

[0014] Compared with the prior art, the present invention has the following advantages: 1. This invention uses the same motor to drive a piston pump and a stirring blade, so that the piston pump's suction pipe and output pipe extend to the bottom and top of the tank, respectively. While the stirring blade is performing conventional mixing, it forces the high-concentration fertilizer solution deposited at the bottom to be pumped to the top for reflux, forming a violent vertical convection circulation. This fundamentally solves the core problem of uneven mixing and inconsistent concentration between upper and lower layers caused by fertilizer deposition in the prior art, ensuring a high degree of uniformity in fertilizer solution mixing.

[0015] 2. By employing a spiral stirring belt, this invention generates a powerful axial circulating flow, which, in conjunction with the vertical circulation formed by the piston pump, further enhances the overall mixing efficiency of the fertilizer solution within the tank and effectively prevents localized mixing dead zones.

[0016] 3. This invention uses a turbine-type inclined blade agitator with an asymmetrical parabolic longitudinal section. Its special blade structure can generate efficient radial shearing and axial pushing effects on the fluid simultaneously during rotation. It works even better with the centrally symmetrical piston pump circulating flow field, significantly improving the dispersion and mixing ability of viscous or easily sedimenting fertilizers.

[0017] 4. This invention increases the suction area by adding a flared guide tube to the end of the suction pipe, which can more effectively collect and suck up concentrated fertilizer deposited at the bottom of the tank. In addition, by setting the direction of the flared guide tube opening opposite to the rotation direction of the stirring blades, the liquid flow from the bottom can flow into the tube opening more smoothly, further improving the efficiency of the piston pump in extracting bottom sediments.

[0018] 5. By setting up two piston pumps that are symmetrical about the center of the main shaft, the present invention can establish a symmetrical and balanced dual circulation flow field in the tank, eliminating the fluid dead zone or vortex asymmetry that may be caused by single-point circulation, making the overall mixing faster and more uniform.

[0019] 6. By setting up an automatic sealing mechanism periodically triggered by the crankshaft, the present invention realizes the linkage control of feeding and stirring cycles, enabling intermittent automatic feeding and avoiding fertilizer accumulation at the bottom of the tank due to large amounts of feeding.

[0020] 7. This invention, by setting vertical baffles on the upper surface of the sealing plate, can disturb the fertilizer in the feed hopper when it slides, effectively preventing powdery or moisture-absorbing fertilizer from bridging or arching above the feed inlet, ensuring smooth material flow. By setting the baffles to be inclined relative to the sliding direction of the sealing plate, the lateral dispersing and loosening effect on the material is enhanced, further improving the reliability of anti-clogging and promoting uniform feeding. Attached Figure Description

[0021] Figure 1This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 This is a partial structural diagram of the present invention.

[0024] Figure 4 This is a schematic diagram showing the transmission relationship between the sealing mechanism and the crankshaft of the present invention.

[0025] The meanings of the reference numerals in the diagram are as follows: 10: Tank body, 11: Top cover, 12: Water inlet, 13: Feed inlet, 14: Feed hopper, 15: Drain pipe, 16: Base, 20: Support frame, 30: Main shaft, 40: Agitator blade, 41: Spiral agitator belt, 42: Turbine inclined blade agitator, 42a: Central disc impeller, 42b: Auxiliary impeller blade, 50: Motor, 60: Piston pump, 61: Cylinder body, 62: Inlet valve, 63: Outlet valve, 64: Suction pipe, 65: Output pipe, 66: Piston, 67: Crankshaft connecting rod mechanism, 67a: Crankshaft, 67b: Connecting rod, 68: Trumpet guide pipe, 70: Sealing mechanism, 71: Slide rail pair, 72: Sealing plate, 73: Elastic reset element, 74: Trigger element, 75: Baffle strip. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1-4 The embodiment of the present invention shown provides a water-soluble fertilizer mixing tank, which generally includes a tank body, a drive system, a mixing assembly, and a pumping system for promoting liquid circulation within the tank. The tank body 10 is supported on a base 16, and its top is provided with an openable top cover 11. The top cover 11 has inlets 12 for injecting water or solution and inlets 13 for adding solid fertilizer. A drain pipe 15 for discharging the final fertilizer solution is connected to the bottom of the tank body 10. A support frame 20 is fixedly installed on the upper surface of the top cover 11 to support the drive device. A main shaft 30 is vertically installed inside the tank body 10, and its upper end is rotatably connected to the central area of ​​the top cover 11 via a bearing. A motor 50 is mounted on the support frame 20, and its output shaft is connected to the upper end of the main shaft 30 via a coupling or other transmission components, thereby providing power to the entire mixing system.

[0028] refer to Figure 2 and Figure 3Inside the tank 10, the stirring blades 40 are fixedly mounted on the main shaft 30 and rotate together with the main shaft to break up solid fertilizer and thoroughly mix it with the liquid. In this embodiment, the stirring blades 40 preferably employ a combined structure, specifically including at least one spiral stirring belt 41 and at least one turbine-style agitator 42. The spiral stirring belt 41 is fixedly mounted on the main shaft 30 in a spiral shape, its function being to generate a strong axial flow during rotation, forcefully exchanging the liquid at the bottom and top of the tank and preventing solid materials from settling at the bottom. The turbine-style agitator 42 is located below the spiral stirring belt 41 and includes a central disc blade 42a fixedly mounted on the main shaft 30, and multiple auxiliary blades 42b evenly spaced along the circumference and fixed to the sides of the central disc blade 42a. Specifically, the longitudinal section of the auxiliary blades 42b is designed as an asymmetrical parabola, with the upper section of the blades being longer than the lower section, with the central disc blade 42a as the boundary. This unique asymmetric parabolic structure allows the longer upper section of the blade to generate stronger radial flow and shear force when rotating, while the shorter lower section generates a flow field, thus achieving a balance between efficient mixing and gentle stirring, which is beneficial for the uniform dispersion of materials of different densities.

[0029] refer to Figure 3As shown, the piston pump system is linked with the motor 50 to enhance the circulation and mixing effect of the fertilizer solution in the tank. Specifically, the cylinder 61 of the piston pump 60 is mounted on the support frame 20, and its inlet and outlet are respectively equipped with an inlet valve 62 and an outlet valve 63. One end of the suction pipe 64 is connected to the inlet valve 62, and the other end extends downward to the bottom of the inner cavity of the tank 10. In order to improve the suction efficiency and prevent clogging, the end located at the bottom of the tank is connected to a flared guide pipe 68, and the opening direction of the flared guide pipe 68 is set towards the rotation direction of the stirring blade 40. This design allows the high-speed rotating blade to drive the liquid flow more smoothly and push the liquid rich in solid particles or high concentration areas at the bottom into the flared opening, thereby being effectively sucked in. One end of the output pipe 65 is connected to the outlet valve 63, and the other end extends to the top area of ​​the inner cavity of the tank 10, for spraying the sucked liquid back to the upper part of the tank. Piston 66 is reciprocatingly mounted within cylinder 61 and connected to the output shaft of motor 50 via crank-connecting rod mechanism 67. Specifically, the crankshaft 67a of crank-connecting rod mechanism 67 is directly connected to the main output shaft 30 of motor 50 via couplings at both ends, while the connecting rod 67b of crank-connecting rod mechanism 67 is hinged to piston 66, thereby converting the rotational motion of motor into the linear reciprocating motion of piston. When piston 66 retracts, inlet valve 62 opens and outlet valve 63 closes, allowing liquid from the bottom of the tank to be drawn into cylinder 61 through suction pipe 64 and bell-shaped guide pipe 68. When piston 66 advances, inlet valve 62 closes and outlet valve 63 opens, forcing liquid in cylinder into outlet pipe 65 and spraying it from the top of the tank, forming a forced circulation of liquid from bottom to top, greatly eliminating concentration gradients and ensuring uniform mixing. To further improve the uniformity of circulation and system stability, the number of piston pumps 60 is preferably two, and the two piston pumps 60 are symmetrically arranged on the support frame 20 about the axis center of the main shaft 30. This symmetrical layout makes the pumping force more even in the circumferential direction of the tank, avoiding the problem of uneven fluid rotation that may be caused by single-point forced circulation.

[0030] Combination Figure 1 and Figure 4 As shown, to achieve uniform and quantitative automatic addition of solid fertilizer, and to coordinate with the mixing and circulation process, a feed hopper 14 and a set of openable and closable sealing mechanisms 70 are installed at the feed inlet 13. Figure 1As shown, the feed hopper 14 is fixed to the top cover 11 and is used to temporarily store solid fertilizer to be added. The sealing mechanism 70 includes a slide rail pair 71 disposed on the top cover 11, a sealing plate 72 slidably connected to the slide rail pair 71, an elastic reset member 73, and a trigger member 74. The sealing plate 72 is slidable under the guidance of the slide rail pair 71 and is used to close or open the feed inlet 13 below it. The elastic reset member 73 may be a compression spring, which is disposed on one side of the sealing plate 72 and provides an elastic force to keep the sealing plate 72 closed in the feed inlet 13 under normal conditions. The trigger member 74 is disposed between the sealing plate 72 and the crankshaft 67a of the crank-connecting rod mechanism 67, and has an abutment wheel at the end near the crankshaft 67a. When the crankshaft 67a rotates with the motor, its protruding part rotates to contact the abutment wheel of the trigger 74, pushing the trigger 74, which in turn drives the sealing plate 72 to overcome the elastic force of the elastic reset member 73 and slide along the slide rail pair 71, thereby opening the feed inlet 13 and allowing the solid fertilizer in the feed bin 14 to fall into the tank. When the protruding part of the crankshaft rotates away, the sealing plate 72 automatically resets and recloses the feed inlet under the action of the elastic reset member 73. This mechanism links the feeding action with the operating cycle of the piston pump and the mixing main shaft, realizing automated intermittent feeding. Figure 4 As shown in the figure, the feed hopper 14 is a longitudinal section in the cc direction. To further improve the dispersion effect of solid fertilizer, multiple vertically extending baffles 75 are provided on the upper surface of the sealing plate 72 facing the feed hopper 14. These baffles 75 can make the fertilizer more dispersed when it falls, bridging and arching. This ensures the smooth fall of the material and further improves the reliability of anti-clogging and promoting uniform feeding. Furthermore, the multiple baffles 75 are inclined relative to the sliding direction of the sealing plate 72, which increases the guiding and scattering effect on the material. By setting the baffles to be inclined relative to the sliding direction of the sealing plate, the lateral stirring and loosening effect on the material is enhanced.

[0031] The working principle and steps of the water-soluble fertilizer mixing tank are as follows: First, a specified amount of water or solution is injected into the tank 10 through the inlet 12. The motor 50 is started, and the motor drives the main shaft 30 to rotate via a transmission connection. The spiral stirring belt 41 and the turbine inclined blade agitator 42, fixed on the main shaft, rotate accordingly, initiating preliminary stirring and shearing of the liquid inside the tank. Simultaneously, the rotation of the motor drives the crankshaft 67a to rotate via a transmission mechanism, which in turn drives the pistons 66 of the two piston pumps 60 to reciprocate through the connecting rod 67b. The piston pumps start working, drawing liquid from the bottom area of ​​the tank through the flared guide pipe 68 and the suction pipe 64, and then spraying it out from the top of the tank through the output pipe 65, establishing a forced circulation flow. After stirring and circulating for a period of time, when solid fertilizer needs to be added, the fertilizer can be pre-added to the feed hopper 14. As the crankshaft 67a continues to rotate, its protruding part periodically contacts the abutment wheel of the trigger 74, pushing the trigger 74 to actuate, thereby pulling open the sealing plate 72 and opening the feed port 13. The solid fertilizer in the feed bin 14 is dispersed by the turbulence strip 75 and falls into the rapidly flowing liquid in the tank. After feeding is completed, the protruding part of the crankshaft rotates away, and the sealing plate 72 automatically closes under the action of the elastic reset member 73. The falling solid fertilizer is immediately broken up by the strong shear and radial flow generated by the high-speed rotating turbine blade agitator 42, and is quickly carried to different depths in the tank by the axial flow generated by the spiral agitator 41. At the same time, the piston pump 60 continues to work, re-entraining, lifting and spraying particles that may settle to the bottom of the tank back to the top of the tank, forming an enhanced process of stirring, crushing, circulating and remixing. After a preset period of thorough stirring and circulation, the solid fertilizer is completely dissolved and evenly dispersed in the liquid, forming a homogeneous water-soluble fertilizer solution. This solution can then be discharged through the drain pipe 15 at the bottom of the tank for use or proceed to the next process. The entire process achieves highly efficient and automated operation from material feeding to mixing, dissolving, and homogenization.

[0032] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A water-soluble fertilizer agitator tank characterized by, The utility model relates to a kind of liquid feeding device, including: Tank body (10), top is equipped with top cover (11), the top cover (11) is opened with water inlet (12) and feed inlet (13); Support frame (20) is fixedly installed on the top cover (11) of the tank body (10); Main shaft (30) is vertically arranged inside the tank body (10), and its upper end is rotatably connected with the top cover (11); Stirring paddle (40) is fixedly installed on the main shaft (30); Motor (50) is installed on the support frame (20), and its output shaft is drivingly connected with the main shaft (30); At least one piston pump (60), the piston pump (60) includes: Cylinder body (61) is installed on the support frame (20); Inlet valve (62) and outlet valve (63) are arranged at the inlet and outlet of the cylinder body (61) respectively; Suction pipe (64) is communicated with the inlet valve (62) of the cylinder body (61) at one end, and extends to the bottom of the inner cavity of the tank body (10) at the other end; Output pipe (65) is communicated with the outlet valve (63) of the cylinder body (61) at one end, and extends to the top of the inner cavity of the tank body (10) at the other end; Piston (66) is arranged reciprocatingly in the cylinder body (61); Crank connecting rod mechanism (67) is hinged with the piston (66) at connecting rod (67b), and crankshaft (67a) is arranged between the output shaft of the motor (50) and the main shaft (30).

2. The water-soluble fertilizer agitator tank according to claim 1, characterized by, The stirring paddle (40) includes at least one spiral stirring belt (41).

3. The water-soluble fertilizer agitator tank according to claim 1, characterized by, The stirring paddle (40) includes a turbine inclined blade stirrer (42), and the turbine inclined blade stirrer (42) includes: A central disc paddle (42a) is fixedly sleeved on the main shaft (30); A plurality of auxiliary paddle blades (42b) are fixedly arranged on the side of the central disc paddle (42a) in a circumferential direction; The longitudinal section of the auxiliary paddle blade (42b) is asymmetric parabolic, and the length of the upper segment is greater than that of the lower segment.

4. The water-soluble fertilizer agitator tank according to any one of claims 1 to 3, characterized by, The end of the suction pipe (64) at the bottom of the tank body (10) is connected with a horn guide pipe (68).

5. The water-soluble fertilizer agitator tank according to claim 4, wherein The opening direction of the pipe opening of the horn guide pipe (68) is towards the rotation direction of the stirring paddle (40).

6. The water soluble fertilizer agitator tank of claim 1, wherein, The number of the piston pump (60) is two, and the two piston pumps (60) are arranged symmetrically about the axis center of the main shaft (30).

7. The water soluble fertilizer agitator vessel of claim 1, wherein, The feed inlet (13) is provided with a feed bin (14) and a closable sealing mechanism (70), and the sealing mechanism (70) includes: A slide rail pair (71) is arranged on the top cover (11); A sealing plate (72) is slidably connected with the slide rail pair (71), and is used for closing or opening the feed inlet (13); An elastic reset member (73) is arranged on one side of the sealing plate (72), and is used for providing elastic force for closing the feed inlet (13) by the sealing plate (72). A trigger (74) is arranged between the sealing plate (72) and the crankshaft (67a), when the crankshaft (67a) rotates to a specific position, the trigger (74) is pushed and drives the sealing plate (72) to slide against the elastic force to open the feeding port (13).

8. The water-soluble fertilizer agitator tank according to claim 7, characterized by, The sealing plate (72) is provided with a plurality of vertical extending spoiler strips (75) on the upper surface thereof facing the feeding bin (14), and the plurality of spoiler strips (75) are arranged obliquely relative to the sliding direction of the sealing plate (72).

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