Liquid water-soluble fertilizer mother liquor anti-settling circulating stirring tank

Abstract

The utility model relates to a kind of liquid water-soluble fertilizer mother liquor anti-deposition circulating stirred tank, belong to liquid water-soluble fertilizer mother liquor production technical field.The device includes base plate, support frame, stirred tank body and protective top cover, the top outer wall of the base plate is supported and installed with stirred tank body by support frame, the inside of the stirred tank body is provided with stirring control assembly, the outside of the stirred tank body is installed with water liquid circulating assembly.The device is by optimizing the structure design of stirring control assembly, solve the single flow form of existing stirred tank, the problem that mother liquor is not mixed evenly, the top of stirring blade adopts sawtooth structure, the strong shear force produced when high-speed rotation can break the particle that easily agglomerates in mother liquor, reduce the generation of deposition from the root, water liquid circulating assembly is by the secondary liquid inlet pipe of inclination and the liquid inlet branch pipe of horizontal installation constructs three-dimensional flow field to eliminate the flow dead angle of tank body in upper layer, middle layer, avoid clear liquid stratification and particle deposition, uniform effect is good.

Description

Technical Field

[0001] This utility model relates to the field of liquid water-soluble fertilizer mother liquor production technology, and in particular to a liquid water-soluble fertilizer mother liquor anti-sedimentation circulating stirring tank. Background Technology

[0002] Liquid water-soluble fertilizer mother liquor is a core intermediate product in the production process of liquid water-soluble fertilizer. It is characterized by high nutrient concentration and strict stability requirements. It is the basic raw material for subsequent dilution and preparation of finished liquid water-soluble fertilizer. Due to the complex solute composition in the mother liquor and the fact that some components are prone to particle agglomeration or sedimentation due to differences in solubility and ion interactions, uneven mixing will directly affect the nutrient uniformity and application effect of the subsequent finished fertilizer. Therefore, special equipment is required for efficient mixing and anti-sedimentation treatment. The liquid water-soluble fertilizer mother liquor mixing tank is a special mixing equipment designed for the above-mentioned characteristics of mother liquor.

[0003] Because liquid water-soluble fertilizer mother liquor is prone to particle agglomeration during stirring, large solute particles are difficult to dissolve fully and are prone to precipitation. Furthermore, existing liquid water-soluble fertilizer mother liquor stirring tanks produce a single flow pattern during stirring, and there are dead flow zones in the tank, resulting in uneven mixing of the mother liquor. At the same time, incompletely mixed fertilizer particles tend to accumulate at the bottom of the stirring tank, making it difficult to mix evenly.

[0004] Therefore, this utility model proposes a circulating stirring tank for preventing sedimentation of liquid water-soluble fertilizer mother liquor. Utility Model Content

[0005] Therefore, in order to overcome the common problems of uneven mixing of mother liquor caused by the single flow pattern and the existence of dead flow corners in the tank during the mixing of common liquid water-soluble fertilizer mother liquor anti-sedimentation circulating mixing tanks.

[0006] The technical solution of this utility model is as follows: a liquid water-soluble fertilizer mother liquor anti-sedimentation circulating mixing tank, including a base plate, a support frame, a mixing tank body and a protective top cover. The mixing tank body is supported and installed on the top outer wall of the base plate by the support frame, and the protective top cover is fitted and installed on the top outer wall of the mixing tank body by a flange assembly. A material injection pipe is fixedly installed on the top outer wall of the protective top cover, and the material injection pipe communicates with the internal space of the protective top cover. A discharge pipe is fixedly installed on the side outer wall of the mixing tank body at the bottom position, and the discharge pipe communicates with the internal space of the mixing tank body. A flange is welded and installed at the end of the discharge pipe, and a control valve is installed on the outside of the discharge pipe. The mixing tank body is equipped with a mixing control component inside, a water circulation component is installed on the outside of the mixing tank body, and a docking component is installed between the mixing tank body and the protective top cover.

[0007] Preferably, the stirring control assembly includes a drive motor, a transmission shaft, a central spoke, stirring blades, a paddle mixer, and a cleaning component. The drive motor is fixedly installed on the top outer wall of the protective cover. The output end of the drive motor is connected to the top end of the transmission shaft. The bottom end of the transmission shaft passes through the protective cover and is located below the protective cover. The central spoke, the paddle mixer, and the cleaning component are installed from top to bottom on the side outer wall of the transmission shaft at the annular surface position. Stirring blades are fixedly installed on the outer side of the central spokes. The top end of the stirring blades is serrated. Two sets of paddle mixers are provided.

[0008] Preferably, the cleaning component is composed of an outer frame and a protective filter screen on one side. The side frame of the cleaning component is set with an arc-shaped surface structure, and the bottom frame edge of the cleaning component away from the protective filter screen is set with a sloping scraper structure. A material discharge trough is opened through the bottom inner wall of the mixing tank body, and a filter screen plate is installed inside the material discharge trough. The lower surface of the cleaning component is in contact with the upper surface of the filter screen plate. A liquid-containing cavity seat is fixedly installed on the bottom outer wall of the mixing tank body located at the material discharge trough position, and the liquid-containing cavity seat is in communication with the internal space of the mixing tank body.

[0009] Preferably, the water circulation assembly includes a circulation pump, an outlet pipe, a one-way outlet valve, a main inlet pipe, and a secondary inlet pipe. The circulation pump is fixedly installed above the base plate. The inlet end of the circulation pump is connected to one end of the outlet pipe via a flange assembly. The other end of the outlet pipe is fixedly installed below the liquid-containing cavity seat, and the outlet pipe communicates with the internal space of the liquid-containing cavity seat. A one-way outlet valve is installed on the outside of the outlet pipe. The outlet end of the circulation pump is connected to one end of the main inlet pipe via a flange assembly, and the other end of the main inlet pipe is connected to the bottom end of the secondary inlet pipe via a flange assembly.

[0010] Preferably, the discharge end of the secondary inlet pipe penetrates the protective top cover and is located inside the protective top cover, and the secondary inlet pipe at the discharge position is installed with an inclined structure. An inlet branch pipe is connected between the main inlet pipe and the mixing tank body. The inlet branch pipe is installed horizontally, and the discharge end of the inlet branch pipe is located in the middle of the mixing tank body.

[0011] Preferably, the docking assembly includes a frame-type frustum base, an arc-shaped abutment block, and an abutment groove. The frame-type frustum base is fixedly installed on the inner wall of the annular surface of the mixing tank body at the top position. The wall thickness of the protective top cover is wider than the wall thickness of the mixing tank body. The arc-shaped abutment block is symmetrically fixedly installed on the outer wall of the bottom end of the protective top cover. Two sets of abutment grooves for the arc-shaped abutment block to engage and install are provided on the outer wall of the top end of the frame-type frustum base.

[0012] Preferably, the upper end face diameter of the frame-type truncated cone is larger than the bottom end face diameter, and the contact surface between the frame-type truncated cone and the bottom side of the mixing tank body is provided with an arc-shaped chamfer.

[0013] The beneficial effects of this utility model are: 1. This liquid water-soluble fertilizer mother liquor anti-sedimentation circulating mixing tank solves the problems of single flow pattern and uneven mixing of mother liquor in existing mixing tanks by optimizing the structural design of the stirring control components. The serrated structure at the tip of the stirring blades generates strong shear force during high-speed rotation, which can break up easily agglomerated particles in the mother liquor, reducing sedimentation at the source. Combined with the design of two sets of paddle agitators and central spokes, the mother liquor is driven to form a composite flow in the radial and circumferential directions. At the same time, the inclined scraper structure of the cleaning component can scrape off unmixed particles accumulated on the filter screen in real time, which not only ensures the filter screen is unobstructed, but also avoids particle accumulation at the bottom of the tank, significantly improving the uniformity of mother liquor mixing and dissolution efficiency.

[0014] 2. When in use, this liquid water-soluble fertilizer mother liquor anti-sedimentation circulating mixing tank, with the synergistic effect of the water circulation component and the docking component, further enhances the anti-sedimentation effect and improves the practicality of the equipment. The water circulation component, through the inclined secondary inlet pipe and the horizontally installed inlet branch pipe, forms an umbrella-shaped axial impact flow and a circumferential tangential circulation flow respectively, constructing a three-dimensional flow field to eliminate the flow dead corners in the upper and middle layers of the tank, avoiding clear liquid stratification and particle deposition. The arc-shaped contact block and contact groove design of the docking component not only realizes the quick positioning and installation of the protective top cover and the tank body, but also, in conjunction with the arc-shaped chamfered structure of the frame-type truncated cone base, reduces the dead corners of mother liquor residue. At the same time, the detachable top cover design facilitates internal cleaning and maintenance of the equipment, reducing operating costs and the risk of contamination of subsequent batches of mother liquor. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention. Figure 2 The diagram shown is a three-dimensional structural diagram of the installation of the stirring control component of this utility model; Figure 3 This utility model is shown. Figure 2 Enlarged 3D structural diagram at point A; Figure 4 The diagram shown is a three-dimensional structural diagram of the water circulation component of this utility model. Figure 5 The diagram shown is a three-dimensional structural diagram of the docking component of this utility model. Figure 6 The diagram shown is a three-dimensional structural schematic of the frame-type truncated cone base of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Support frame; 3. Mixing tank body; 4. Protective top cover; 5. Mixing control assembly; 501. Drive motor; 502. Transmission shaft; 503. Center spokes; 504. Mixing blades; 505. Paddle mixer; 506. Cleaning components; 507. Filter plate; 508. Liquid-containing cavity seat; 6. Water circulation assembly; 601. Circulation pump; 602. Liquid outlet pipe; 603. One-way liquid outlet valve; 604. Main liquid inlet pipe; 605. Secondary liquid inlet pipe; 606. Liquid inlet branch pipe; 7. Connecting assembly; 701. Frame-type frustum base; 702. Arc-shaped contact block; 703. Contact groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figures 1-6This utility model provides a technical solution: a liquid water-soluble fertilizer mother liquor anti-sedimentation circulating mixing tank, including a base plate 1, a support frame 2, a mixing tank body 3 and a protective top cover 4. The top outer wall of the base plate 1 is supported and installed with the mixing tank body 3 by the support frame 2, and the top outer wall of the mixing tank body 3 is fitted with the protective top cover 4 by a flange assembly. A material injection pipe is fixedly installed on the top outer wall of the protective top cover 4, and the material injection pipe communicates with the internal space of the protective top cover 4. A discharge pipe is fixedly installed on the side outer wall of the mixing tank body 3 at the bottom position, and the discharge pipe communicates with the internal space of the mixing tank body 3. A flange is welded to the end of the discharge pipe, and a control valve is installed on the outside of the discharge pipe. The mixing tank body 3 is equipped with a mixing control component 5 inside, a water circulation component 6 is installed on the outside of the mixing tank body 3, and a docking component 7 is installed between the mixing tank body 3 and the protective top cover 4.

[0022] The stirring control assembly 5 includes a drive motor 501, a transmission shaft 502, a central spoke 503, a stirring blade 504, a paddle mixer 505, and a cleaning component 506. The drive motor 501 is fixedly mounted on the outer top wall of the protective cover 4. The output end of the drive motor 501 is connected to the top end of the transmission shaft 502. The bottom end of the transmission shaft 502 penetrates the protective cover 4 and is located below it. The central spoke 503, the paddle mixer 505, and the cleaning component 506 are mounted from top to bottom on the outer side wall of the transmission shaft 502 at the annular surface position. The stirring blade 504 is fixedly mounted on the outer side of the central spoke 503. The top of 4 is serrated. The paddle mixer 505 is provided in two sets. The cleaning component 506 is composed of an outer frame and a protective filter screen on one side. The side frame of the cleaning component 506 is set as an arc-shaped surface structure. The bottom frame edge of the cleaning component 506 away from the protective filter screen is set as a sloping scraper structure. The bottom inner wall of the mixing tank body 3 is provided with a feeding trough. The filter screen plate 507 is installed inside the feeding trough. The lower surface of the cleaning component 506 is in contact with the upper surface of the filter screen plate 507. The bottom outer wall of the mixing tank body 3 located at the feeding trough is fixedly installed with a liquid-containing cavity seat 508. The liquid-containing cavity seat 508 is in communication with the internal space of the mixing tank body 3. Here, the tip of the stirring blade 504 is set to be serrated, which can generate strong shearing force during subsequent high-speed rotation to break up easily agglomerated particles in the water-soluble fertilizer mother liquor, such as humic acid aggregates and trace element particles, to prevent solute from precipitating due to agglomeration and improve the uniformity of dissolution of the mother liquor; the cleaning component 506 has its side outer frame set to an arc structure, which can reduce resistance during actual rotation through the guiding effect of the arc surface. A single-sided protective filter screen is installed inside it, and the bottom frame on the other side is set to a sloping scraper structure. During actual rotation, the sloping scraper structure can scrape the unmixed fertilizer accumulated on the upper surface of the filter plate 507 into the frame of the cleaning component 506 and temporarily store it with the protective filter screen to ensure the smooth flow of the filter plate 507 in subsequent circulation processes; The water circulation assembly 6 includes a circulation pump 601, an outlet pipe 602, a one-way outlet valve 603, a main inlet pipe 604, and a secondary inlet pipe 605. The circulation pump 601 is fixedly installed above the base plate 1. The inlet end of the circulation pump 601 is connected to one end of the outlet pipe 602 via a flange assembly. The other end of the outlet pipe 602 is fixedly installed below the liquid-containing cavity seat 508, and the outlet pipe 602 communicates with the internal space of the liquid-containing cavity seat 508. A one-way outlet valve 603 is installed on the outside of the outlet pipe 602. The outlet of the circulation pump 601... The liquid end is connected to one end of the main liquid inlet pipe 604 via a flange assembly. The other end of the main liquid inlet pipe 604 is connected to the bottom end of the secondary liquid inlet pipe 605 via a flange assembly. The discharge end of the secondary liquid inlet pipe 605 passes through the protective top cover 4 and is located inside the protective top cover 4. The secondary liquid inlet pipe 605 is installed at the liquid outlet with an inclined structure. A liquid inlet branch pipe 606 is installed between the main liquid inlet pipe 604 and the mixing tank body 3. The liquid inlet branch pipe 606 is installed horizontally, and the discharge end of the liquid inlet branch pipe 606 is located in the middle of the tank body of the mixing tank body 3. It should be noted that the diameter of the inlet branch pipe 606 is smaller than that of the secondary inlet pipe 605. The upper secondary inlet pipe 605 has a larger diameter, which can maintain a lower flow rate to reduce friction loss. The middle inlet branch pipe 606 has a smaller diameter, which increases the flow rate to enhance the jetting power of the fluid, making the return liquid spread more widely in the tank and the impact force more uniform, thereby avoiding the problem of uneven liquid inlet caused by local flow rate differences. The docking assembly 7 includes a frame-type frustum base 701, an arc-shaped contact block 702, and a contact groove 703. The frame-type frustum base 701 is fixedly installed on the inner wall of the annular surface of the mixing tank body 3 at the top position. The wall thickness of the protective top cover 4 is wider than the wall thickness of the mixing tank body 3. The arc-shaped contact block 702 is symmetrically fixedly installed on the outer wall of the bottom end of the protective top cover 4. Two sets of contact grooves 703 for the arc-shaped contact block 702 to engage and install are provided on the outer wall of the top end of the frame-type frustum base 701. The diameter of the upper end face of the frame-type frustum base 701 is larger than the diameter of the bottom end face, and the contact surface between the frame-type frustum base 701 and the bottom side of the mixing tank body 3 is provided with an arc-shaped chamfer. The arc-shaped contact block 702 and the contact groove 703 are designed to assist in the positioning of the mixing tank body 3 and the protective top cover 4. The frame-type frustum base 701 is designed to facilitate support and positioning, and to control the liquid level in the tank to the maximum limit. The arc-shaped chamfer at the bottom end prevents the mother liquor raw material from forming a dead angle at the joint between the frame-type frustum base 701 and the mixing tank body 3 during the swirling process.

[0023] Working principle: See Figures 1-3 As shown, the raw material of liquid water-soluble fertilizer mother liquor is first injected into the mixing tank body 3 through the injection pipe. After all the raw material is injected, the injection pipe is closed. Then the drive motor 501 is turned on. When the drive motor 501 is turned on, its output end rotates and automatically drives the transmission main shaft 502 to rotate, which in turn drives the central spoke 503, the paddle agitator 505 and the cleaning component 506 to rotate synchronously. When the central spoke 503 rotates, it also drives the agitator blade 504 to rotate synchronously. At the same time, the cleaning component 506 performs a circumferential cleaning and scraping operation on the upper surface of the filter plate 507. When the stirring blade 504 rotates, the serrated structure on its blades generates localized strong shear force on the mother liquor during high-speed rotation, breaking up easily agglomerated particles in the water-soluble fertilizer mother liquor and dispersing large particles into smaller particles to improve the solubility of the solute. This reduces precipitation caused by particle agglomeration at the source. The combined design of the central spoke 503 and the annular serrations allows the stirring blade 504 to push the mother liquor to form a composite flow from the center to the tank wall radially and circumferentially along the tank wall when rotating. The radial flow pushes the mother liquor in the central area toward the tank wall, while the circumferential flow drives the top layer of mother liquor to circulate continuously along the tank wall, preventing scum from accumulating on the liquid surface. See Figures 1-4 As shown, according to the actual mixing requirements of the mother liquor, when the composition of the mother liquor in the tank is basically uniform as observed through the viewing window on the outside of the mixing tank body 3, the circulation pump 601 is turned on. When the circulation pump 601 is turned on, the mother liquor inside the mixing tank body 3 will be drawn out through the outlet pipe 602 and sent to the main inlet pipe 604. Then, a part of the mother liquor will be reintroduced into the tank through the inlet branch pipe 606, and another part of the mother liquor will be reintroduced into the tank through the secondary inlet pipe 605. The secondary inlet pipe 605 is set at an inclined angle for liquid inlet, and the inlet branch pipe 606 is set at a horizontal angle for liquid inlet. In actual operation, when the liquid enters the mixing tank body 3 from the secondary inlet pipe 605, it forms an umbrella-shaped axial impact flow. It first impacts downwards axially, then spreads radially along the tank wall, covering the upper mother liquor area. This breaks the stagnant layer of the top mother liquor, quickly pushing light substances floating on the surface, such as incompletely dissolved additives and foam, into the middle and lower layers of mother liquor. Simultaneously, it causes the upper mother liquor to churn downwards, forming a preliminary mixture with the middle and lower layers, preventing the upper layer from separating into clear and stratified components. When the liquid enters the mixing tank body 3 from the inlet branch pipe 606, it will form a circumferential tangential circulation flow, which will cause the liquid to be sprayed at high speed along the tangential direction of the tank wall of the mixing tank body 3, and drive the middle layer mother liquor to continuously circulate along the circumference of the tank body, forming an annular flow band around the center of the tank body. The tangential force is used to force the middle layer mother liquor to circulate in a circular manner, so that the sediment particles cannot stay and accumulate in a fixed area of ​​the tank wall of the mixing tank body 3. At the same time, the horizontal tangential flow and the axial flow of the middle layer paddle agitator 505 are superimposed to construct a three-dimensional flow field with circumferential circumference and up-and-down tumbling, so as to eliminate dead corners in the middle layer flow. The filter plate 507 is designed to prevent residual particles in the mother liquor from entering the circulation pump 601, while the cleaning component 506 is designed to help clear blockages on the upper surface of the filter plate 507.

[0024] See Figure 1 , Figures 5-6 As shown, when the above-mentioned uniformly mixed liquid water-soluble fertilizer mother liquor is discharged through the discharge pipe and the inside of the mixing tank body 3 needs to be cleaned, the above-mentioned feeding and mixing process can be repeated, and the medium can be replaced with clean water or, according to actual needs, with a cleaning agent. Finally, the wastewater can be discharged out of the tank through the discharge pipe. When it is necessary to clean the inside of the mixing tank body 3 in all directions, the two sets of flange bolt assemblies between the mixing tank body 3 and the protective top cover 4, the main liquid inlet pipe 604 and the secondary liquid inlet pipe 605 can be directly disassembled, and the protective top cover 4 along with the mixing assembly can be directly removed from the tank. When the protective top cover 4 is reinstalled later, the positioning and insertion action of the arc-shaped contact block 702 and the contact groove 703 can be used to initially position it, and then the flange bolts can be reinstalled and tightened.

[0025] It should be noted that the aforementioned drive motor 501 can be powered by existing operating techniques, whether using a power supply unit or an external wire, both of which are conventional operating techniques and will not be described in detail here.

[0026] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] 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 liquid water-soluble fertilizer mother liquor anti-sedimentation circulating stirring tank, comprising a base plate (1), a support frame (2), a stirring tank body (3), and a protective top cover (4), characterized in that: The top outer wall of the base plate (1) is supported by the support frame (2) and the mixing tank body (3) is installed. The top outer wall of the mixing tank body (3) is fitted with a protective top cover (4) through a flange assembly. The top outer wall of the protective top cover (4) is fixedly installed with a material injection pipe, and the material injection pipe communicates with the internal space of the protective top cover (4). The side outer wall of the mixing tank body (3) at the bottom position is fixedly installed with a discharge pipe, and the discharge pipe communicates with the internal space of the mixing tank body (3). The end of the discharge pipe is welded with a flange, and a control valve is installed on the outside of the discharge pipe. The mixing tank body (3) is provided with a mixing control component (5) inside, and a water circulation component (6) is installed on the outside of the mixing tank body (3). A docking component (7) is installed between the mixing tank body (3) and the protective top cover (4). The stirring control assembly (5) includes a drive motor (501), a transmission shaft (502), a central spoke (503), a stirring blade (504), a paddle mixer (505), and a cleaning component (506). The drive motor (501) is fixedly installed on the outer wall of the top of the protective cover (4). The output end of the drive motor (501) is connected to the top of the transmission shaft (502). The bottom end of the transmission shaft (502) passes through the protective cover (4) and is located below the protective cover (4). The central spoke (503), the paddle mixer (505), and the cleaning component (506) are installed from top to bottom on the outer wall of the transmission shaft (502) located on the annular surface. The stirring blade (504) is fixedly installed on the outer side of the central spoke (503). The top of the stirring blade (504) is serrated. There are two sets of paddle mixers (505). The cleaning component (506) is composed of an outer frame and a protective filter screen on one side. The side frame of the cleaning component (506) is set as an arc-shaped surface structure, and the bottom frame edge of the cleaning component (506) away from the protective filter screen is set as a sloping scraper structure. The bottom inner wall of the mixing tank body (3) is provided with a feeding trough, and a filter screen plate (507) is installed inside the feeding trough. The lower surface of the cleaning component (506) is in contact with the upper surface of the filter screen plate (507). A liquid-containing cavity seat (508) is fixedly installed on the bottom outer wall of the mixing tank body (3) located at the feeding trough position, and the liquid-containing cavity seat (508) is in communication with the internal space of the mixing tank body (3).

2. The liquid water-soluble fertilizer mother liquor anti-sedimentation circulating stirring tank according to claim 1, characterized in that: The water circulation assembly (6) includes a circulation pump (601), an outlet pipe (602), a one-way outlet valve (603), a main inlet pipe (604), and a secondary inlet pipe (605). The circulation pump (601) is fixedly installed above the base plate (1). The inlet end of the circulation pump (601) is connected to one end of the outlet pipe (602) through a flange assembly. The other end of the outlet pipe (602) is fixedly installed below the liquid-containing cavity seat (508), and the outlet pipe (602) communicates with the internal space of the liquid-containing cavity seat (508). A one-way outlet valve (603) is installed on the outside of the outlet pipe (602). The outlet end of the circulation pump (601) is connected to one end of the main inlet pipe (604) through a flange assembly. The other end of the main inlet pipe (604) is connected to the bottom end of the secondary inlet pipe (605) through a flange assembly.

3. The anti-sedimentation circulating stirring tank for liquid water-soluble fertilizer mother liquor according to claim 2, characterized in that: The discharge end of the secondary inlet pipe (605) passes through the protective top cover (4) and is located inside the protective top cover (4). The secondary inlet pipe (605) is installed at the outlet position with an inclined structure. The main inlet pipe (604) is connected to the mixing tank body (3) by an inlet branch pipe (606). The inlet branch pipe (606) is installed horizontally, and the discharge end of the inlet branch pipe (606) is located in the middle of the mixing tank body (3).

4. The anti-sedimentation circulating stirring tank for liquid water-soluble fertilizer mother liquor according to claim 1, characterized in that: The docking assembly (7) includes a frame-type frustum base (701), an arc-shaped contact block (702), and a contact groove (703). The frame-type frustum base (701) is fixedly installed on the inner wall of the annular surface of the mixing tank body (3) at the top position. The wall thickness of the protective top cover (4) is wider than the wall thickness of the mixing tank body (3). The arc-shaped contact block (702) is symmetrically fixedly installed on the outer wall of the bottom end of the protective top cover (4). Two sets of contact grooves (703) are provided on the outer wall of the top end of the frame-type frustum base (701) for the arc-shaped contact block (702) to engage and install.

5. The anti-sedimentation circulating stirring tank for liquid water-soluble fertilizer mother liquor according to claim 4, characterized in that: The upper end diameter of the frame-type truncated cone base (701) is larger than the bottom end diameter, and the bottom contact surface between the frame-type truncated cone base (701) and the mixing tank body (3) is provided with an arc-shaped chamfer.

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