Humic acid chelation reaction tank capable of adjusting pH value

Abstract

The utility model relates to the technical field of fertilizer processing, in particular to a humic acid chelation reaction tank capable of adjusting the pH value, which comprises a chelation tank, a stirring device is mounted in the chelation tank, and a mixture of humic acid and fertilizer soil is subjected to uniform chelation reaction; an openable and closable feeding hole is formed in the top of the chelating tank; an atomizer is mounted outside the chelating tank, an atomizing head of the atomizer is arranged at the top in the chelating tank in a penetrating manner, and a liquid pumping opening of the atomizer is communicated with an acid-alkali liquid tank through a valve pipe and is used for adjusting the pH value of a uniformly stirred mixture; a pH detector is mounted outside the chelating tank, and a detection head of the pH detector is inserted into the chelating tank to detect the pH value; and an openable and closable discharge hole is formed in the bottom of the chelating tank. According to the utility model, the technical problems of chelation reaction among humic acid, fertilizer and soil and suitability for soil with different acidity and alkalinity after the reaction are solved.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer processing technology, and more specifically, to a humic acid chelation reaction tank with adjustable pH value. Background Technology

[0002] Humic acid is a class of natural organic macromolecular compounds that are widely found in soil, water bodies, coal, and environments rich in organic matter. It is formed from the decomposition of plant and animal remains by microorganisms and through geochemical processes, and is an important component of humus. It can also be extracted artificially from agricultural waste through composting, biological fermentation, or chemical oxidation.

[0003] The chelation reaction of humic acid involves chelating Fe³⁺, Zn²⁺, etc., in the soil, preventing their precipitation (such as phosphate fixation), and promoting plant absorption; it also fixes Cd²⁺, Pb²⁺, etc., in the soil, reducing heavy metal toxicity. When humic acid is mixed with fertilizers, for urea, humic acid can inhibit the activity of urease in the soil, reduce urea hydrolysis, improve the effect of slow-release urea, and increase the utilization rate of nitrogen fertilizer; for phosphate fertilizer, the chelation reaction of humic acid can fix free ions in the soil, reducing the fixation of phosphorus by free ions, allowing plants to absorb it better.

[0004] In existing technologies, the chelation reaction of humic acid is generally carried out by directly mixing humic acid into the soil in the external environment and allowing it to undergo a chelation reaction on its own. This chelation reaction is time-consuming and inefficient. Moreover, when mixed with fertilizers into the external soil, it is not easy to mix evenly, resulting in incomplete chelation reactions in different soil locations and affecting the soil improvement effect.

[0005] Furthermore, soils in different environments have varying internal pH levels and are used to grow crops with different pH requirements. If the pH of the humic acid-soil mixture after chelation is not readjusted, it can easily cause adverse effects such as seedling burn. Therefore, pH adjustment is necessary after the humic acid and soil are mixed and chelated. Summary of the Invention

[0006] The purpose of this application is to provide a humic acid chelation reaction tank with adjustable pH value, which solves the technical problems of chelation reaction between humic acid, fertilizer and soil and its applicability to soils with different pH levels after the reaction.

[0007] To solve the above-mentioned technical problems, the solution adopted in this application is as follows:

[0008] A humic acid chelation reaction tank with adjustable pH value, comprising a chelation tank.

[0009] Preferably, a stirring device is installed in the chelation tank.

[0010] Preferably, the top of the chelation groove is provided with an openable feed port.

[0011] Preferably, an atomizer is installed outside the chelation tank, the atomizing head of the atomizer is inserted into the top of the chelation tank, and the pump port of the atomizer is connected to the acid and alkali solution tank through a valve pipe.

[0012] Preferably, a pH meter is installed outside the chelation tank, and the detection head of the pH meter is inserted into the chelation tank.

[0013] Preferably, the bottom of the chelation tank is provided with an openable and closable discharge port.

[0014] Preferably, the chelation tank is further provided with a pressure reducing valve, which includes a valve tube and a filter element.

[0015] Preferably, the valve tube connects the inside and outside of the chelation groove and is located at the top of the chelation groove.

[0016] Preferably, a filter element is provided in the valve tube.

[0017] Preferably, the stirring device includes a motor and a ribbon screw agitator.

[0018] Preferably, the motor is fixed outside the chelating tank, the motor drive shaft is fixedly connected to the rotating shaft of the ribbon screw agitator, the motor drive shaft passes through the chelating tank, and the ribbon screw agitator is located inside the chelating tank.

[0019] Preferably, in the spiral ribbon agitator, the two spiral ribbons have opposite spiral directions, and the axial direction of the rotating shaft is transverse within the chelating groove.

[0020] Preferably, pH meters are fixedly installed at both ends of the chelation tank, both horizontally and vertically.

[0021] Preferably, the atomizer includes a centrifugal atomizing head and an atomizer body.

[0022] Preferably, the centrifugal atomizing head is inserted through the top of the fixed chelation groove, and the centrifugal atomizing head is connected to the atomizer body through a retractable air tube, and the atomizer body is fixed outside the chelation groove.

[0023] Preferably, the openable discharge port includes an automatic opening and closing structure.

[0024] Preferably, the automatic opening and closing structure includes a sealing door and a drive component.

[0025] Preferably, the sealing door is slidably disposed on the discharge opening at the bottom of the chelating tank, and the sealing door is connected to the telescopic rod of the cylinder, which is fixed outside the chelating tank.

[0026] Preferably, the openable feed port includes a sealing cap, which includes a cap body, a gas spring, and an elbow clamp.

[0027] Preferably, the rear end of the cover is movably connected to the top of the chelating groove.

[0028] Preferably, the two ends of the gas spring are connected to the cover and the outside of the chelating groove, respectively.

[0029] Preferably, the front end of the cover is provided with an elbow clamp.

[0030] Preferably, the sealing cap further includes a hydrophobic coating.

[0031] Preferably, the hydrophobic coating is applied to the inner surface of the cover.

[0032] The technical solution of this application has at least the following advantages and beneficial effects:

[0033] In this invention, a stirring device capable of reciprocating stirring in all directions is installed in the chelation tank to thoroughly and evenly stir the mixture of humic acid, fertilizer, and soil. Then, a chelation aid is added to carry out a thorough chelation reaction, thereby improving the soil improvement effect.

[0034] In this invention, an atomizer is installed at the top of the chelation tank to spray atomized acid or alkali onto the surface of the stirred mixture. This allows the acid or alkali to be uniformly mixed in the repeatedly stirred mixture, thereby uniformly adjusting the pH of the entire mixture. After the chelation reaction, the mixture is suitable for external soil environments with different pH levels. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of the present invention from the first angle.

[0036] Figure 2 This is a structural schematic diagram of the present invention from a second angle.

[0037] Figure 3 This is a structural schematic diagram of the present invention from the third angle.

[0038] Figure 4 This is a front view structural diagram of the present invention.

[0039] Figure 5 This is a cross-sectional view of the stirring device in this utility model.

[0040] Figure 6 This is a cross-sectional view of the chelating groove in this utility model.

[0041] Figure 7 This is a structural schematic diagram of the present invention from the fourth angle.

[0042] In the diagram: 1-chelation tank, 2-sealing cover, 201-cover body, 202-gas spring, 203-elbow clamp, 204-hydrophobic coating, 3-stirring device, 301-motor, 302-ribbon screw agitator, 4-acid and alkali tank, 401-acid tank, 402-alkali tank, 5-atomizer, 501-centrifugal atomizing head, 502-atomizer body, 6-discharge port, 601-sealing door, 602-drive component, 7-pH meter, 8-pressure reducing valve. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "center," "upper," "lower," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In the existing technology, the function of the humic acid chelation reaction tank is to put the humic acid extracted from lignite, weathered coal, peat or compost, along with fertilizer and soil, into the reaction tank, and then add chelation aids to carry out the chelation reaction.

[0046] Humic acid is a natural organic macromolecule containing functional groups such as carboxyl and phenolic hydroxyl groups, exhibiting strong complexing capabilities. The chelation reaction mechanism involves the carboxyl and phenolic hydroxyl groups in humic acid acting as coordinating groups, binding with metal ions (such as Fe³⁺ and Zn²⁺) in the soil through coordinate bonds to form stable, water-soluble cyclic structures (chelates). This produces chelated micronutrients (such as iron humate), reducing the fixation effect of metal ions on various ions in the fertilizer (such as phosphorus ions), enhancing fertilizer utilization, increasing the bioavailability or stability of metal nutrients in the soil, improving plant absorption of metal nutrients, replenishing organic matter in the soil, and improving soil quality. Example

[0047] Please refer to Figures 1-2 This utility model provides a humic acid chelation reaction tank with adjustable pH value, including a chelation tank 1, a sealing cover 2, a stirring device 3, an acid and alkali liquid tank 4, an atomizer 5, a discharge port 6, and a pH meter 7.

[0048] The chelation tank 1 is a tank supported by a frame. The tank contains a mixture of humic acid, fertilizer and soil. A stirring device 3 is installed in the tank to stir and mix the mixture. After the chelation aid is added to the tank, the stirring device 3 can stir the mixture to carry out a full chelation reaction.

[0049] The top of the tank is equipped with an openable and closable sealing cover 2. When the sealing cover 2 is opened, a mixture can be added to the chelation tank 1; when the sealing cover 2 is closed, a sealed space is formed inside the tank, so that the chelation reaction is not affected by external factors.

[0050] Furthermore, an atomizer 5 is installed outside the tank. The atomizing head of the atomizer 5 extends into the tank. The pump port of the atomizer 5 is connected to the acid and alkali solution tank 4 through a valve pipe, thereby pumping acid or alkali solution into the tank and adhering to the surface of the continuously stirred mixture to change the soil's pH value.

[0051] The nozzle of the atomizing head is located at the top of the tank and faces the surface of the mixture, so that the atomized acid or alkali solution is sprayed onto the surface of the mixture and adheres to it. Because the stirring device 3 drives the mixture to continuously turn over and mix, the mixture that has not been adhered to the acid or alkali solution will be turned over to the atomizing head, thus improving the uniformity of the mixing of the acid or alkali solution in the mixture.

[0052] Furthermore, a pH meter 7 is installed outside the tank. The detection head of the pH meter 7 is inserted into the mixture inside the tank to detect the acidity or alkalinity of the mixture.

[0053] During the chelation reaction, when soils with different pH levels are required, the initial pH of the mixture is detected by pH meter 7. Then, according to the soil requirements, the valve of acid tank 401 or alkali tank 402 in acid and alkali tank 4 is opened to allow the mixture to flow into atomizer 5 and be atomized into the mixture to change the pH. When pH meter 7 detects a second time that the pH of the mixture meets the soil requirements, the valve of acid and alkali tank 4 and atomizer 5 can be closed.

[0054] Furthermore, the tank has a discharge port 6 at the bottom, which is normally closed. Once the chelation reaction and pH adjustment of the mixture in the tank are completed, the discharge port 6 can be opened to output the mixture of humic acid, fertilizer and soil to the outside. Example

[0055] Please refer to Figure 1 In this embodiment, a pressure reducing valve 8 is also fixedly installed on the chelation tank 1. The pressure reducing valve 8 includes a valve tube and a filter element. The valve tube is connected to the internal space of the chelation tank 1 and is located above the internal space. Opening the valve tube valve can allow the acid (or alkali) mist accumulated in the internal space to be vented to the outside, balancing the pressure difference between the inside and outside of the chelation tank 1. The filter element installed in the valve tube can filter out the acid (or alkali) mist that enters the valve tube, allowing only air to circulate, and preventing the acid (or alkali) mist from flowing to the outside and causing safety problems.

[0056] In the process of adjusting the pH of the mixture, the chelation tank 1 is a sealed reaction space. The atomizer 5 generates atomized acid (or alkali) at the top of the sealed space, which mixes with the surface of the mixture being stirred below the sealed space to adjust the pH. However, because the internal space of the chelation tank 1 is sealed, as the atomizer 5 continuously introduces acid (or alkali) mist into the chelation tank 1, the air pressure in the internal space of the chelation tank 1 gradually increases. Some of the acid (or alkali) mist also diffuses into the internal space and floats because it does not stably adhere to the surface of the mixture.

[0057] When the sealing cover 2 at the top of the chelation tank 1 is opened, the acid (or alkali) mist floating in the sealed space will diffuse to the outside of the chelation tank 1 due to the pressure difference between the inside and outside. Its corrosiveness will endanger the safety of the personnel outside. Therefore, before opening the sealing cover 2 at the top of the chelation tank 1, the pressure reducing valve 8 should be opened in advance to depressurize the internal space of the chelation tank 1. The pressure difference between the inside and outside will be used to draw the acid (or alkali) mist in the internal space into the pressure reducing valve 8 under negative pressure. The filter element will then filter the acid (or alkali) mist suspended in the internal space, reducing the danger when personnel open the chelation tank 1. Example

[0058] Please refer to Figure 5 and Figure 6 In this embodiment, the stirring device 3 includes a motor 301 and a ribbon screw stirrer 302.

[0059] The motor 301 is fixed on the frame of the chelation tank 1. The drive shaft of the motor 301 is fixedly connected to the rotating shaft of the ribbon screw agitator 302, which drives the agitator to rotate. The ribbon screw agitator 302 is located in the internal space of the chelation tank 1 and performs agitation work on the mixture in the chelation tank 1.

[0060] Among them, the ribbon screw agitator 302 is an existing structure. The ribbon screw agitator 302 has two evenly distributed spiral ribbons fixedly arranged around the outer side of the rotating shaft. The agitator shaft and the ribbons are fixed together by connecting columns. When the rotating shaft is driven to rotate by the motor 301, the spiral ribbons push the material in its spiral direction to stir and disperse the mixture.

[0061] In this embodiment, the two spiral ribbons in the ribbon-screw stirrer 302 have opposite spiral directions, and the axial direction of the rotating shaft is transverse within the chelating tank 1. Therefore, during the stirring process, the two spiral ribbons drive the mixture in the chelating tank 1 to perform a transverse reciprocating spiral motion (e.g., one ribbon rotating causes the mixture to move laterally to the left, and the other ribbon rotating causes the mixture to move laterally to the right), achieving uniform mixing of the mixture on both sides of the transverse direction in the chelating tank 1. As the mixture moves spirally under the drive of the ribbons, during the stirring process, the mixture in the upper part of the chelating tank 1 is spirally tumbled to the lower part, and the mixture in the lower part of the chelating tank 1 is spirally tumbled to the upper part, achieving uniform tumbling of the mixture in the upper and lower parts of the chelating tank 1. This ensures that the mixture at any position in the chelating tank 1 can be uniformly mixed together for chelation reaction and pH adjustment. Example

[0062] Please refer to Figure 4 and Figure 6 In this embodiment, pH detectors 7 are fixedly installed at both ends of the chelation tank 1 in the horizontal direction and at both ends of the vertical direction, so as to detect the pH value of the mixture at each position in the chelation tank 1, reduce the error in pH detection, and determine whether the acidity and alkalinity of the mixture at each position in the chelation tank 1 are uniformly distributed.

[0063] In this system, the detection heads of each pH meter 7 are inserted into the mixture without being exposed, and do not interfere with the stirring device 3 inside the chelation tank 1, thus avoiding contact with the acid (or alkali) mist floating in the chelation tank 1 and affecting the detection accuracy.

[0064] During the process of adjusting the pH value of the mixture, the initial pH value of the mixture is taken as the average value of multiple pH meters 7 to reduce measurement error; after the mixture is introduced with acid (or alkali) mist, when the pH meters 7 at different locations are in the same pH range, the pH adjustment of the mixture is completed, the atomizer 5 is turned off, and acid (or alkali) mist is no longer introduced.

[0065] Example 1

[0066] Please refer to Figure 2 , Figure 3 and Figure 6 In this embodiment, the atomizer 5 includes a centrifugal atomizing head 501 and an atomizer body 502.

[0067] The atomizer 5 is an existing structure used to atomize liquid and then spray it out. In this embodiment, the atomizer 5 is set to a centrifugal atomizer, so that the liquid is thrown into droplets by the centrifugal effect of the high-speed rotating disk. The centrifugal effect can precisely control the particle size by adjusting the rotation speed, so as to avoid the atomized particles being too small and easily floating with the airflow.

[0068] Specifically, the centrifugal atomizing head 501 is inserted and fixed on the sealing cover 2. The centrifugal atomizing head 501 is connected to the atomizer body 502 through a retractable air tube. The atomizer body 502 is fixed outside the chelation tank 1.

[0069] The centrifugal atomizing head 501 changes the magnitude of centrifugal force by rotating at its speed, controlling the droplet diameter within a suitable range, so that more atomized acid (or alkali) adheres to the surface of the mixture, reducing the number of droplets floating in the chelation tank (too large droplets tend to condense on the top of the sealing cap 2, while too small droplets tend to float in the chelation tank 1 with the airflow).

[0070] Example 2

[0071] Please refer to Figure 7 In this embodiment, to avoid manually opening the discharge port 6 and causing the pH-adjusted mixture to come into contact with and corrode human hands, the opening and closing of the discharge port 6 is set to an automatic opening and closing structure.

[0072] The automatic opening and closing structure includes a sealing door 601 and a driving component 602, wherein the driving component 602 is configured as a cylinder.

[0073] The sealing door 601 is slidably mounted on the discharge port 6. The sealing door 601 is connected to the telescopic rod of the cylinder. The cylinder is fixed on the frame. When the discharge port 6 needs to be opened, the cylinder is activated. The cylinder drives the sealing door 601 to slide out of the discharge port 6, and the mixture in the chelation tank 1 is output from the discharge port 6.

[0074] Example 3

[0075] Please refer to Figure 2 and Figure 3 In this embodiment, the sealing cover 2 includes a cover body 201, a gas spring 202, and an elbow clamp 203.

[0076] Specifically, the rear end of the cover 201 is hinged to the top of the chelating tank 1. A sealing ring is provided on the edge of the cover 201 to provide a seal when the tank is closed. Gas springs 202 are connected to both sides of the cover 201. The two ends of the gas springs 202 are fixedly connected to the cover 201 and the outside of the chelating tank 1, respectively. The gas pressure inside the gas springs 202 provides support for the open cover 201 and keeps the cover 201 open.

[0077] The gas spring 202 is an existing structure, mainly composed of a piston rod, a piston, and a pressure cylinder. The pressure cylinder is a sealed cavity filled with inert gas or an oil-gas mixture, and the pressure inside the cavity is greater than atmospheric pressure. When the gas spring 202 is in action, the movement of the piston rod is achieved by utilizing the pressure difference on both sides of the piston. The gas spring 202 generally has only two working positions, the shortest and the longest, thus it can utilize the fixed working position for support.

[0078] In addition, an elbow clamp 203 is fixedly provided at the front end of the cover 201. When the cover 201 is placed on the top of the tank, the elbow clamp 203 is manually pressed, and the elbow clamp 203 clamps the cover 201 and the bottom of the tank together, thereby achieving a sealed and fixed connection between the cover 201 and the tank.

[0079] Furthermore, the sealing cap 2 also includes a hydrophobic coating 204, which is applied to the inner surface of the cap body 201 (i.e., the surface located in the internal space of the chelation tank 1 when the cap body 201 seals the tank). During the pH adjustment process, the atomized acid (or alkali) is affected by the airflow, and a small portion of it floats inside the chelation tank 1. These droplets will contact and adhere to the inner surface of the cap body 201, and then condense to form droplets that fall into the mixture, causing uneven mixing of the acid (or alkali) in the mixture. Therefore, the hydrophobic coating 204 is used to prevent the floating droplets from contacting and adhering to the inner surface of the cap body 201, thereby reducing the generation of condensed droplets.

[0080] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.

Claims

1. A humic acid chelation reaction tank with adjustable pH value, comprising a chelation tank (1), characterized in that... ； A stirring device (3) is installed inside the chelation tank (1); The chelation tank (1) is provided with an openable feed port at the top; An atomizer (5) is installed outside the chelation tank (1). The atomizing head of the atomizer (5) is inserted into the top of the chelation tank (1). The pump port of the atomizer (5) is connected to the acid and alkali tank (4) through a valve pipe. A pH meter (7) is installed outside the chelation tank (1), and the detection head of the pH meter (7) is inserted into the chelation tank (1). The bottom of the chelation tank (1) is provided with an openable and closable discharge port (6).

2. The humic acid chelation reaction tank with adjustable pH value according to claim 1, characterized in that, The chelation tank (1) is also provided with a pressure reducing valve (8), which includes a valve tube and a filter element; The valve tube connects the inside and outside of the chelating groove (1) and is located at the top of the chelating groove (1); A filter element is installed in the valve tube.

3. The humic acid chelation reaction tank with adjustable pH value according to claim 1, characterized in that, The stirring device (3) includes a motor (301) and a ribbon screw agitator (302). The motor (301) is fixed outside the chelating tank (1), and the drive shaft of the motor (301) is fixedly connected to the rotating shaft of the ribbon screw agitator (302). The drive shaft of the motor (301) passes through the chelating tank (1), and the ribbon screw agitator (302) is located inside the chelating tank (1). The spiral directions of the two spiral ribbons in the spiral ribbon agitator (302) are opposite, and the axial direction of the rotating shaft is transverse in the chelating groove (1).

4. The humic acid chelation reaction tank with adjustable pH value according to claim 1, characterized in that, pH detectors (7) are fixedly installed at both the horizontal and vertical ends of the chelation tank (1).

5. The humic acid chelation reaction tank with adjustable pH value according to claim 1, characterized in that, The atomizer (5) includes a centrifugal atomizing head (501) and an atomizer body (502). The centrifugal atomizing head (501) is inserted through the top of the fixed chelating groove (1), and the centrifugal atomizing head (501) is connected to the atomizer body (502) through a retractable air tube. The atomizer body (502) is fixed outside the chelating groove (1).

6. The humic acid chelation reaction tank with adjustable pH value according to claim 1, characterized in that, The openable discharge port (6) includes an automatic opening and closing structure; The automatic opening and closing structure includes a sealing door (601) and a driving component (602). The sealing door (601) is slidably set on the discharge opening at the bottom of the chelating tank (1). The sealing door (601) is connected to the telescopic rod of the cylinder, and the cylinder is fixed outside the chelating tank (1).

7. A humic acid chelation reaction tank with adjustable pH value according to claim 1, characterized in that, The openable feed port includes a sealing cover (2), which includes a cover body (201), a gas spring (202), and an elbow clamp (203). The rear end of the cover (201) is movably connected to the top of the chelating groove (1); The two ends of the gas spring (202) are connected to the outside of the cover (201) and the chelating groove (1), respectively; The front end of the cover (201) is provided with an elbow clamp (203).

8. A humic acid chelation reaction tank with adjustable pH value according to claim 7, characterized in that, The sealing cap (2) also includes a hydrophobic coating (204); The hydrophobic coating (204) is applied to the inner surface of the cover (201).

Images