Humic acid fertilizer extraction device based on weathered coal
By crushing and screening weathered coal, combined with stirring and heating in the reaction vessel, the problem of insufficient contact area between weathered coal and solvent was solved, achieving efficient extraction and solid-liquid separation of humic acid, and improving the production efficiency of humic acid fertilizer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA VOCATIONAL COLLEGE OF COMMERCE & TRADE
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-19
AI Technical Summary
Existing humic acid extraction devices are not convenient for screening weathered coal, resulting in large particles of weathered coal having a small surface area and limited contact area with the solvent, leading to a slow humic acid leaching rate.
The system employs components such as a screening box, rotating shaft, crushing roller, vibrating motor, screen plate, spring, and motor to work together. It increases the surface area of weathered coal through crushing and screening, and improves the screening effect through the cooperation of the vibrating motor and spring. It utilizes components such as a reaction vessel, rotating rod, stirring blade, electric heating plate, filter press, and hydraulic cylinder to achieve full reaction and solid-liquid separation between weathered coal and alkaline solution.
This method increases the contact area between weathered coal and solvent, enhances the leaching rate and extraction efficiency of humic acid, avoids material blockage, and achieves efficient solid-liquid separation and preparation of humate.
Smart Images
Figure CN224252819U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of humic acid fertilizer extraction devices, specifically a humic acid fertilizer extraction device based on weathered coal. Background Technology
[0002] Humic acid is a natural organic polymer compound widely found in minerals such as coal (especially weathered coal and lignite), peat, and biomass. It functions to improve soil structure, increase fertilizer utilization, and enhance crop resistance, earning it the titles of "soil nutritionist" and "plant growth regulator." Weathered coal, formed from coal exposed to the earth's surface over a long period through weathering and oxidation, is a low-rank coal with a high humic acid content (typically 10%–40%). Its abundant reserves and low mining costs make it an ideal raw material for humic acid extraction.
[0003] Existing extraction devices are often inconvenient for screening weathered coal, resulting in small surface areas of large weathered coal particles and limited contact area with solvent, leading to slow humic acid leaching rates.
[0004] To address the aforementioned issues, a humic acid fertilizer extraction device based on weathered coal is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a humic acid fertilizer extraction device based on weathered coal, which solves the problem in the prior art that it is inconvenient to screen weathered coal, resulting in large particles of weathered coal having a small surface area and limited contact area with the solvent, leading to a slow humic acid leaching rate.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a humic acid fertilizer extraction device based on weathered coal, comprising a reaction vessel and a screening box. A first motor is fixedly connected to the top of the reaction vessel, and a rotating rod is fixedly connected through the output end of the first motor through the reaction vessel. Evenly distributed stirring blades are fixedly connected to the outer ring of the rotating rod. A feed pipe is fixedly connected through and to the right side of the top of the reaction vessel, and a discharge pipe is fixedly connected through and to the bottom of the reaction vessel. A filter press assembly is fixedly connected through and to the bottom of the discharge pipe. Two rotating shafts are rotatably connected through and to the upper part of the screening box. Crushing rollers are fixedly connected to the outer ring of each of the two rotating shafts, and gears are fixedly connected to the outer ring of the left side of each of the two rotating shafts. Fixed plates are fixedly connected to both sides of the lower part of the screening box, and two springs are fixedly connected to the top sides of each of the two fixed plates. A screen plate is fixedly connected to the top of each spring, and a vibrating motor is fixedly connected to the top of the screen plate. A discharge port is opened on the left side of the screening box.
[0007] By adopting the above technical solution, the shredded weathered coal can be screened through the screen plate, and the screen plate can be vibrated by the vibrating motor and spring, which can improve the screening effect and avoid material blockage.
[0008] As a further description of the above technical solution: the filter press assembly includes a filter press box, the top of which is fixedly connected to the discharge pipe, a hydraulic cylinder is fixedly connected to the left side of the filter press box, a sealing plate is fixedly connected to the output end of the hydraulic cylinder, a filter plate is provided on the right side of the filter press box, a sealing ring is fixedly connected to the left side of the filter plate and is located in a sealing groove, a sealing groove is provided on the right side of the filter press box, and the filter plate is fixedly connected to the right side of the filter press box by screws.
[0009] By employing the above technical solution, the hydraulic cylinder of the filter press assembly pushes the sealing plate to the right, pressurizing the material. The solution passes through the filter plate and is discharged, while solid residue is retained, achieving solid-liquid separation.
[0010] As a further description of the above technical solution: an electric heating plate is fixedly connected inside the reaction vessel.
[0011] By adopting the above technical solution, the reaction rate and the solubility of humic acid can be improved by using an electric heating plate.
[0012] As a further description of the above technical solution: support columns are fixedly connected to both sides of the bottom of the reactor, and the support columns are arranged on the outside of the filter press assembly.
[0013] By adopting the above technical solution, the support column can play a supporting role for the reactor.
[0014] As a further description of the above technical solution: both gears are located on the outside of the screening box, and the two gears are meshed together.
[0015] By adopting the above technical solution, a transmission function is achieved, which facilitates the simultaneous rotation of two rotating shafts via gears.
[0016] As a further description of the above technical solution: a second motor is fixedly connected to the left side of the screening box, and the output end of the second motor is fixedly connected to the front rotating shaft.
[0017] By adopting the above technical solution, the second motor can drive the front-end shaft to rotate.
[0018] As a further description of the above technical solution: a feeding cylinder is connected through and fixedly to the bottom of the screening box, and the end of the feeding cylinder is connected through and fixedly to the reaction vessel.
[0019] By adopting the above technical solution, the crushed and screened weathered coal can be fed into the reaction vessel through the feeding cylinder.
[0020] As a further description of the above technical solution: a feeding cylinder is fixedly connected through the top of the screening box.
[0021] By adopting the above technical solution, weathered coal can be conveniently poured into the screening box through the feeding cylinder.
[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0023] 1. This utility model provides a humic acid fertilizer extraction device based on weathered coal. First, the screening box, rotating shaft, crushing roller, vibrating motor, screen plate, spring, second motor, and feeding cylinder work together. The two crushing rollers can crush large pieces of weathered coal, and the screen plate can screen the crushed weathered coal to avoid large particles of weathered coal affecting the extraction effect. Furthermore, the vibrating motor and spring can make the screen plate vibrate, improve the screening effect, and avoid material blockage.
[0024] 2. This utility model provides a humic acid fertilizer extraction device based on weathered coal. The device comprises a reaction vessel, a rotating rod, stirring blades, an electric heating plate, a filter press, a hydraulic cylinder, a sealing plate, a filter plate, and a sealing ring, all working in coordination. The rotating stirring blades, in conjunction with the electric heating plate, ensure a thorough reaction between the pulverized weathered coal and the alkaline solution, dissolving the humic acid in the coal. Furthermore, the hydraulic cylinder of the filter press assembly pushes the sealing plate to the right, pressurizing the material. The solution passes through the filter plate and is discharged, while solid residue is retained, achieving solid-liquid separation. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2 This is a cross-sectional view of the overall structure of this utility model;
[0027] Figure 3 This is a side view of the overall structure of this utility model;
[0028] Figure 4 This is a schematic diagram of the structure of this utility model.
[0029] In the diagram: 1. Reactor; 2. First motor; 3. Rotating rod; 4. Stirring blade; 5. Electric heating plate; 6. Feed pipe; 7. Discharge pipe; 8. Filter press; 9. Hydraulic cylinder; 10. Sealing plate; 11. Filter plate; 12. Sealing ring; 13. Sealing groove; 14. Screw; 15. Support column; 16. Screening box; 17. Rotating shaft; 18. Crushing roller; 19. Gear; 20. Second motor; 21. Fixing plate; 22. Spring; 23. Screen plate; 24. Vibrating motor; 25. Discharge port; 26. Feeding cylinder; 27. Feeding cylinder. Detailed Implementation
[0030] 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.
[0031] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.
[0032] Reference Figure 1-4 This utility model discloses a humic acid fertilizer extraction device based on weathered coal, comprising a reaction vessel 1 and a screening box 16. The screening box 16 has support feet (not shown in the figure) installed on its outer bottom, which, together with the support column 15, provide support for the device. A first motor 2 is fixedly connected to the top of the reaction vessel 1. The output end of the first motor 2 passes through the reaction vessel 1 and is fixedly connected to a rotating rod 3. Evenly distributed stirring blades 4 are fixedly connected to the outer ring of the rotating rod 3. The first motor 2 drives the rotating rod 3 and stirring blades 4 to rotate. A feed pipe 6 is fixedly connected to the top right side of the reaction vessel 1 for easy addition of the reaction solution. A discharge pipe 7 is fixedly connected to the bottom of the reaction vessel 1. A solenoid valve (not shown in the figure) is installed outside the discharge pipe 7 for easy control of the discharge. A filter press assembly is connected to the bottom of the discharge pipe 7. Two rotating shafts 17 are rotatably connected to the upper part of the screening box 16. Crushing rollers 18 are fixedly connected to the outer ring of each rotating shaft 17, which can crush large pieces of weathered coal. Gears 19 are fixedly connected to the outer left ring of both rotating shafts 17. Fixing plates 21 are fixedly connected to both sides of the lower part of the screening box 16, serving a supporting function. Two springs 22 are fixedly connected to the top sides of the two fixing plates 21, and a screen plate 23 is fixedly connected to the top of the springs 22, allowing the weathered coal particles to be screened. A vibrating motor 24 is fixedly connected to the top of the screen plate 23. A discharge port 25 is opened on the left side of the screening box 16, and a collection box is installed outside the discharge port 25 to collect incompletely crushed weathered coal for secondary crushing.
[0033] Reference Figure 2The filter press assembly includes a filter press box 8, with the top of the box fixedly connected to the discharge pipe 7. A hydraulic cylinder 9 is fixedly connected to the left side of the filter press box 8, and a sealing plate 10 is fixedly connected to the output end of the hydraulic cylinder 9. A sealing ring (not shown in the figure) is provided on the outer ring of the sealing plate 10 to ensure sealing when moving within the filter press box 8. A filter plate 11 is provided on the right side of the filter press box 8, and a sealing ring 12 is fixedly connected to the left side of the filter plate 11, with the sealing ring 12 located in a sealing groove 13. A sealing groove 13 is provided on the right side of the filter press box 8. The filter plate 11 is fixedly connected to the right side of the filter press box 8 by screws 14. The hydraulic cylinder 9 of the filter press assembly pushes the sealing plate 10 to the right to pressurize the material. The solution is discharged through the filter plate 11, while solid residue is retained, achieving solid-liquid separation. A collection box (not shown in the figure) is provided below the filter press assembly to facilitate the collection of the humic acid solution, allowing the humic acid solution to be processed through subsequent acidification, concentration, and drying steps to produce humic acid fertilizer.
[0034] Reference Figure 1-4 An electric heating plate 5 is fixedly connected inside the reactor 1, which can increase the reaction rate. Support columns 15 are fixedly connected to both sides of the bottom of the reactor 1. The support columns 15 are located outside the filter press assembly, and their inner sides are fixedly connected to the outside of the filter press box 8. The support columns 15 provide support for the reactor 1 and the filter press assembly. Two gears 19 are located outside the screening box 16 and are meshed together, serving as a transmission mechanism to simultaneously drive the two rotating shafts 17. A second motor 20 is fixedly connected to the left side of the screening box 16. The output end of the second motor 20 is fixedly connected to the front rotating shaft 17, enabling the second motor 20 to drive the front rotating shaft 17 to rotate. A feed cylinder 26 is fixedly connected through the bottom of the screening box 16, and its end is fixedly connected through the reactor 1. The feed cylinder 26 allows the crushed and screened weathered coal to enter the reactor 1. The top of the screening box 16 is fixedly connected through the top of the feeding cylinder 27.
[0035] Working Principle: During operation, weathered coal raw material enters the screening box 16 through the feeding cylinder 27. The second motor 20 is started, its output driving the front rotating shaft 17 to rotate. Due to the meshing of gears 19 on the outer left rings of the two rotating shafts 17, the two shafts 17 rotate relative to each other, causing the two crushing rollers 18 to rotate relative to each other, thus crushing the weathered coal. The crushed material falls onto the screen plate 23. The vibration motor 24 is started, and the screen plate 23 vibrates under the cooperation of the spring 22, allowing material meeting the particle size requirements to pass through the screen plate 23 and enter the reactor 1 through the feeding cylinder 26. Larger particles are discharged from the left outlet 25 and enter the collection box (not shown in the figure) for collection. The material enters the reactor 1 through the feed pipe 6, and an appropriate amount of alkali solution is added simultaneously. The first motor 2 is started, its output driving the rotating rod 3 and stirring blades 4 to rotate, thoroughly stirring the material and alkali solution to ensure uniform mixing. Simultaneously, the electric heating plate 5 is turned on to heat the material in the reactor 1. Under suitable temperature conditions, the reaction rate of humic acid and alkaline solution in the weathered coal is accelerated, converting humic acid into soluble humate salts to form a humate salt solution. After the reaction is complete, the humate salt solution flows into the filter press 8 through the discharge pipe 7. The hydraulic cylinder 9 is activated, and its output end pushes the sealing pressure plate 10 to the right, applying pressure to the solution in the filter press 8. Under pressure, the solution is filtered through the filter plate 11, and the humate salt solution flows out through the filter plate 11 and enters the collection box below for collection. Impurities are intercepted on the left side of the filter plate 11. The sealing ring 12 and the sealing groove 13 cooperate to ensure the sealing of the filtration process. After filtration, the filter plate 11 can be removed and the residue can be taken out by unscrewing the screw 14. The humate salt solution obtained by filtration can be further processed by acidification, concentration, drying, etc., to produce humic acid fertilizer.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0037] 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 device for extracting humic acid fertilizer based on weathered coal, comprising a reaction vessel (1) and a screening box (16), characterized in that: A first motor (2) is fixedly connected to the top of the reactor (1). A rotating rod (3) is fixedly connected to the output end of the first motor (2) through the reactor (1). A uniformly distributed stirring blade (4) is fixedly connected to the outer ring of the rotating rod (3). A feed pipe (6) is fixedly connected to the top right side of the reactor (1). A discharge pipe (7) is fixedly connected to the bottom of the reactor (1). A filter press assembly is connected to the bottom of the discharge pipe (7). Two rotating shafts (17) are rotatably connected to the upper part of the screening box (16). The outer rings of the two rotating shafts (17) are fixedly connected to crushing rollers (18), the outer rings of the left side of the two rotating shafts (17) are fixedly connected to gears (19), the lower sides of the screening box (16) are fixedly connected to fixed plates (21), the top sides of the two fixed plates (21) are fixedly connected to two springs (22), the top of the springs (22) is fixedly connected to a screen plate (23), the top of the screen plate (23) is fixedly connected to a vibrating motor (24), and the left side of the screening box (16) is provided with a discharge port (25).
2. The humic acid fertilizer extraction device based on weathered coal according to claim 1, characterized in that: The filter press assembly includes a filter press box (8), the top of which is fixedly connected to the discharge pipe (7). A hydraulic cylinder (9) is fixedly connected to the left side of the filter press box (8), and a sealing plate (10) is fixedly connected to the output end of the hydraulic cylinder (9). A filter plate (11) is provided on the right side of the filter press box (8), and a sealing ring (12) is fixedly connected to the left side of the filter plate (11). The sealing ring (12) is located in a sealing groove (13). A sealing groove (13) is opened on the right side of the filter press box (8). The filter plate (11) is fixedly connected to the right side of the filter press box (8) by screws (14).
3. The humic acid fertilizer extraction device based on weathered coal according to claim 1, characterized in that: An electric heating plate (5) is fixedly connected inside the reactor (1).
4. The humic acid fertilizer extraction device based on weathered coal according to claim 1, characterized in that: The bottom of the reactor (1) is fixedly connected to two support columns (15), which are located on the outside of the filter press assembly.
5. The humic acid fertilizer extraction device based on weathered coal according to claim 1, characterized in that: Both gears (19) are located outside the screening box (16), and the two gears (19) are meshed together.
6. The humic acid fertilizer extraction device based on weathered coal according to claim 1, characterized in that: The screening box (16) is fixedly connected to a second motor (20) on the left side, and the output end of the second motor (20) is fixedly connected to the front rotating shaft (17).
7. The humic acid fertilizer extraction device based on weathered coal according to claim 1, characterized in that: The bottom of the screening box (16) is connected to a feed cylinder (26), and the end of the feed cylinder (26) is connected to the reactor (1).
8. The humic acid fertilizer extraction device based on weathered coal according to claim 1, characterized in that: The top of the screening box (16) is connected to a feeding cylinder (27).