Mineral source humic acid activation device for improving cultivated land organic matter

Abstract

The invention relates to a mineral source humic acid activation device for improving cultivated land organic matters, a spiral shaft in the device is suspended in an inner cylinder, and a ceramic ball is placed in the inner cylinder; the spiral drives the raw materials and the ceramic balls to collide and activate in circulation and vortex; chemical bonds of humic acid functional groups are broken and recombined, and are combined with water molecules to form high-activity organic matters with higher surface tension and viscosity. The slurry enters a classifier through a flocculation device for particle size classification; fine particles upwards enter a separation barrel with vortex blades, and large particles downwards enter a liquid collection box. Organic matters and inorganic ash in the fine particles are separated in the separation cylinder, and the organic matters enter the flocculation device through the return pipe to be polymerized into large micelles and enter the classifier again to be classified. A wet mechanical activation method is used for replacing a mechanical dry method, so that the damage of high temperature to humic acid functional groups in the processing process is avoided; meanwhile, organic matters and inorganic matters are separated through repeated collision and friction, and humic acid can be directly used for farmland drip irrigation after being polymerized and concentrated after grading.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical wet activation of mineral-source humic acid, and in particular to a mineral-source humic acid activation device for increasing organic matter in cultivated land. Background Art

[0002] The cycle of carbon and organic nutrients in cultivated soil is a key ecological function in farmland ecosystems. Excessive application of chemical fertilizers can cause many problems, such as soil compaction, acidification, and microbial imbalance. On the other hand, long-term use of chemical fertilizers can reduce the quality of agricultural products and reduce nutritional content. Large-scale application of humic acid can effectively supplement organic matter in cultivated land, while also enhancing soil moisture retention and pellet stability.

[0003] Mineral humic acid is widely found in weathered coal, lignite, and peat. Industrial processing can produce humic acid on a large scale. However, unpurified and activated mineral humic acid contains a lot of soil and inorganic impurities. How to fully separate humic acid and inorganic matter in industrial production, how to further activate humic acid functional groups, and how to concentrate and enrich the activated humic acid are difficult problems.

[0004] Humic acid in the raw materials is often closely combined with inorganic particles, in an embedded and wrapped state. To separate and activate, the material must be further refined to increase its surface area. At the same time, if it is made into an aqueous solution and directly drip-irrigated, it will face the situation of slow water flow and inorganic ash precipitation blocking the pipes and nozzles. Both application conditions require that the raw materials be refined to more than 600 mesh when mechanical treatment is used. If traditional mechanical dry production is adopted, continuous grinding and refining will generate high temperature, and long-term exceeding 60°C will damage the active functional groups of humic acid. Although intermittent dry grinding can control the temperature, the production efficiency will be greatly reduced. At the same time, dry production is not conducive to the further separation of humic acid and inorganic matter. Summary of the invention

[0005] In view of the above technical problems, the purpose of the present invention is to provide a mineral humic acid activation device for improving the organic matter of cultivated land, so that it can avoid the destruction of its functional groups by high temperature during the humic acid activation process, and at the same time separate the organic matter from the inorganic impurities, and then directly use it as an aqueous solution for drip irrigation after the organic matter is aggregated and concentrated, so as to supplement the organic nutrients in the cultivated land.

[0006] The purpose of the present invention is achieved by the following scheme. A mineral humic acid activation device for improving organic matter in cultivated land proposed in the present invention includes an activation cylinder, a separation cylinder, a pressure pump, a condenser, a hydraulic classifier and a liquid collecting box, wherein a spiral shaft is vertically suspended in the activation cylinder, and a main transmission device for driving the spiral shaft to rotate is provided on the top of the activation cylinder; an inner cylinder is provided between the activation cylinder and the spiral shaft, and a feed trough is provided on the top of the activation cylinder, and the feed trough is used to add mineral humic acid raw materials, water and balls for refining the mineral humic acid raw materials into the inner cylinder; the inner cylinder is composed of a perforated steel plate, and the minimum particle size of the balls therein is larger than the diameter of the steel plate holes; the activation cylinder is connected to the pressure pump through the overflow hole on its side wall, and the pressure pump is connected to the pressure pump through the condenser. The separator is connected to the hydraulic classifier; the lower end of the hydraulic classifier sends the heavier components into the liquid collecting tank, and the upper end sends the lighter components into the separation cylinder; a vortex blade is provided inside one end of the separation cylinder, and a power device for driving the vortex blade to rotate is provided outside, and the other end is connected to the feed trough through a central tube, and the return pipe on the side wall of the other end of the separation cylinder is connected to the condenser, and a nozzle is provided in the condenser. The slurry transported by the pressure pump is sprayed through the nozzle and then tangentially enters the hydraulic classifier, so that a low-pressure vortex zone is formed at the nozzle outlet, and the low-pressure vortex zone absorbs small-size organic matter on the wall of the separation cylinder through the return pipe; a submersible pump is provided at the bottom of the liquid collecting tank, and a finished product outlet pipe is provided on the upper side wall.

[0007] Furthermore, the balls are ceramic balls. Using ceramic balls as materials for refining the mineral humic acid raw materials can not only meet the refining requirements, but also the wear of the ceramic balls will not introduce metal impurities and will not affect the quality of the final product.

[0008] Furthermore, the spiral axis is arranged at the center of the activation cylinder, and the inner cylinder and the activation cylinder are arranged coaxially.

[0009] Furthermore, the main transmission device is fixed to the top of the activation cylinder through a support frame, and the support frame is detachably connected to the activation cylinder to facilitate the maintenance of the transmission shaft and the main transmission device.

[0010] Furthermore, vortex plates are provided at different heights on the inner wall of the activation cylinder, so that a vortex is formed between the activation cylinder and the inner cylinder, further enhancing the refinement efficiency.

[0011] Furthermore, the hydraulic classifier has two upper and lower cavities, the upper cavity is cylindrical, and the lower cavity is inverted conical, and the upper part of the hydraulic classifier is connected to the separation cylinder through a connecting pipe inserted into its cavity, and the feed pipe of the hydraulic classifier is tangentially connected to the upper cavity.

[0012] Furthermore, double-headed spiral blades are welded on the spiral shaft, and the surfaces of the blades are covered with wear-resistant rubber.

[0013] Furthermore, a vent pipe and a manhole door are respectively provided on the lower wall of the activation cylinder, and a manhole door is also provided at a position corresponding to the manhole door on the inner cylinder and the activation cylinder to facilitate maintenance and cleaning.

[0014] Furthermore, regulating valves are provided on the pipelines before and after the booster pump, and pressure gauges are provided on the connecting pipelines of the condenser and the hydraulic classifier, so as to facilitate the adjustment of flow and pressure and the maintenance of the booster pump.

[0015] Furthermore, a liquid collecting tank vent pipe and a liquid collecting tank manhole door are provided at the lower part of the liquid collecting tank, and a liquid level meter is also provided in the liquid collecting tank.

[0016] Compared with the prior art, the invention is beneficial in that: the mineral humic acid raw material and water are added to the activation cylinder, and under the action of spiral blades and ceramic balls of different particle sizes, the raw material particle size is refined, various hydrophilic functional groups such as hydroxyl groups and alcohol groups in organic matter are fully activated, and the interfacial activity is enhanced. The heat generated during the grinding and refining of the mineral raw materials is taken away by the slurry, and no damage is caused to the organic functional groups. The overflow generated by the activation cylinder passes through the hydraulic classifier, separation cylinder, and condenser, and the mineralized inorganic impurities and colloidal organic matter are separated to the maximum extent. The organic matter concentration in the mineral humic acid solution after deep processing is increased, and it is directly used for drip irrigation of cultivated land crops.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the composition of a mineral-source humic acid activation device for increasing organic matter in cultivated land.

[0019] [Reference Signs]

[0020] 1. Screw shaft; 2. Activation cylinder; 3. Vortex plate; 4. Inner cylinder; 5. Support frame; 6. Main transmission device; 7. Feed trough; 8. Center pipe; 9. Reflux pipe; 10. Separation cylinder; 11. Vortex blades; 12. Driving device; 13. Pressure gauge; 14. Regulating valve; 15. Pressure pump; 16. Coagulator; 17. Hydraulic classifier; 18. Liquid collecting box; 19. Finished product outlet pipe; 20. Submersible pump; 21. Liquid level meter; 22. Liquid collecting box drain pipe; 23. Liquid collecting box manhole door; 24. Activation cylinder manhole door; 25. Activation cylinder drain pipe. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0022] like Figure 1 The present invention shows an embodiment of a mineral humic acid activation device for improving organic matter in cultivated land, the activation device comprises an activation cylinder 2, a separation cylinder 10, a pressure pump 15, a condenser 16, a hydraulic classifier 17 and a liquid collecting box 18, wherein an inner cylinder 4 is fixedly provided in the activation cylinder 2, and the bottom of the inner cylinder 4 is fixed to the bottom of the activation cylinder 2, and the top is lower than the activation cylinder 2. A feed trough 7 is provided at the top of the activation cylinder, and the outlet of the feed trough 7 is directly opposite to the inner cylinder 4, so that mineral humic acid raw materials, water and balls for refining mineral humic acid raw materials can be added into the inner cylinder 4 through the feed trough 7. The inner cylinder 4 is composed of a perforated steel plate, and the diameter of the steel plate hole of the inner cylinder 4 is smaller than the diameter of the ball with the minimum particle size to prevent the ball from escaping from the inner cylinder 4. In this embodiment, the ball is a ceramic ball.

[0023] A spiral shaft 1 is vertically suspended in the activation cylinder 2, and the inner cylinder 4 is located between the activation cylinder 2 and the spiral shaft 1. When the spiral shaft 1 and the spiral blades rotate under the drive of the main transmission device 6, they can drive the material in the inner cylinder 4 to spirally rise. In this embodiment, the spiral shaft 1 is arranged at the center of the activation cylinder 2, and the inner cylinder 4 is coaxially arranged with the activation cylinder 2. The main transmission device 6 is fixed on the top of the activation cylinder 2. In this embodiment, the main transmission device 6 is mounted on a support frame 5, and the support frame 5 is fixed on the top of the activation cylinder 2. Preferably, the support frame 5 is a steel load-bearing frame, but is not limited to this.

[0024] An overflow hole is provided on the upper side wall of the activation cylinder 2, and the overflow hole is connected to the booster pump 15 through a pipeline. The height of the overflow hole is lower than the height of the inner cylinder 4. The booster pump 15 is connected to the hydraulic classifier 17 through the condenser 16. A nozzle for fluid acceleration is provided in the condenser 16, and the slurry transported by the booster pump 15 is accelerated by the nozzle and then tangentially enters the hydraulic classifier 17. Preferably, the nozzle in the condenser 16 is a conical nozzle, and the water inlet side of the nozzle is connected to the booster pump 15, and the water outlet side is connected to the hydraulic classifier 17.

[0025] The hydraulic classifier 17 has a cavity that is larger at the top and smaller at the bottom, and the hydraulic classifier 17 is connected to the condenser 16 through the feed port on the upper end wall. The lower outlet of the hydraulic classifier 17 is connected to the liquid collecting tank 18, and the upper part is connected to the separation cylinder 10 through a connecting pipe, and the lower end of the connecting pipe is inserted into the center of the hydraulic classifier 17 cavity for a certain distance. In the hydraulic classifier 17, the large inorganic particles and large humic acid flocculants with relatively large specific gravity are subjected to large centrifugal force and enter the liquid collecting tank 18 along the inner wall of the hydraulic classifier 17; the inorganic ash and small-size organic matter with relatively small specific gravity enter the separation cylinder 10 upward through the connecting pipe in the center of the hydraulic classifier 17. Preferably, the hydraulic classifier 17 has a cylindrical cavity at the upper end and an inverted conical cavity at the lower end, and the feed port is set at a tangential position of the cylindrical cavity, so that the discharge pipe of the condenser 16 is tangentially connected to the hydraulic classifier 17.

[0026] A vortex blade 11 is provided inside one end of the separation cylinder 10, and the vortex blade 11 is connected to a driving device 12 through a transmission shaft, and the driving device 12 is fixed outside the separation cylinder 10. The other end of the separation cylinder 10 is connected to the feed trough 7 through a central tube 8. The side wall of the end of the separation cylinder 10 connected to the central tube 8 is connected to the condenser 16 through a return pipe 9, and the side wall near the end of the vortex blade 11 is connected to the hydraulic classifier 17 through a connecting pipe. The driving device 12 drives the vortex blade 11 to accelerate the light material entering the separation cylinder 10 from the hydraulic classifier 17, so that it rotates and moves rapidly to the other end. Organic matter and inorganic ash are separated during the rotation process according to the different centrifugal forces they are subjected to. The heavier inorganic ash impurities are distributed in the central area of ​​the separation cylinder 10, and the small particles of organic matter are distributed on the wall of the separation cylinder 10. The high-speed water flow at the inner mouth of the condenser 16 causes the surrounding pressure to decrease, thus forming a low-pressure vortex, which in turn generates suction on the return pipe 9, so that the organic matter at the wall of the separation cylinder 10 enters the low-pressure vortex area of ​​the condenser 16 through the return pipe 9, and agglomerates there to form larger colloids and enter the hydraulic classifier 17 for circulation and sorting. The ash and most of the water flow into the trough 7 through the central pipe 8 and are used as supplementary water for raw material slurry mixing.

[0027] The bottom of the liquid collecting box 18 is provided with a submersible pump 20, the outlet of which extends from the lower side wall of the liquid collecting box 18, and the upper side wall of the liquid collecting box 18 is provided with a finished product outlet pipe 19. The organic matter and large inorganic particles entering the liquid collecting box 18 from the lower outlet of the hydraulic classifier 17 are naturally settled and layered according to their different specific gravities, the large inorganic particles at the bottom are discharged by the submersible pump 20 at the bottom, and the high-concentration and low-density humic acid activated aqueous solution is discharged from the finished product outlet pipe 19.

[0028] In this embodiment, a double-headed spiral blade is welded on the spiral shaft 1, and the surface of the blade is covered with wear-resistant rubber to increase the service life of the blade. The thickness of the wear-resistant rubber is 5 mm.

[0029] In this embodiment, vortex plates 3 are provided at different heights on the inner wall of the activation cylinder 2. During operation, a strong vortex is formed near the vortex plate 3, and the raw material particles further collide with each other and activate at the strong energy vortex.

[0030] The lower part of the activation cylinder 2 is provided with an activation cylinder vent pipe 25 and two activation cylinder manhole doors 24 of the same specification. One activation cylinder manhole door is located on the side wall of the activation cylinder 2, and the other is located on the side wall of the inner cylinder 4 at a position corresponding to the activation cylinder manhole door on the side wall of the activation cylinder. The vent pipe 25 is used to discharge slurry during maintenance. The activation cylinder manhole door 24 is used to clean the mineral accumulation and ceramic balls at the bottom of the activation cylinder 2 and the inner cylinder 4 during maintenance.

[0031] In this embodiment, the support frame 5 is connected to the top connecting plate of the activation cylinder 2 by bolts and positioning pins. When the screw shaft 1 is replaced, the support frame 5 and the main transmission device 6 are removed as a whole. In other embodiments, the support frame 5 can also be detachably connected to the top connecting plate of the activation cylinder 2 by other means.

[0032] In this embodiment, regulating valves 14 are respectively provided on the pipelines before and after the pressure pump 15 to adjust the slurry pressure and flow rate and facilitate the maintenance of the pressure pump 15 .

[0033] In this embodiment, a pressure gauge 13 is installed on the pipeline connecting the coagulator 16 and the hydraulic classifier 17 to indicate the slurry pressure at the inlet of the hydraulic classifier.

[0034] In this embodiment, the driving device 12 has an adjustable speed motor, and the rotation speed can be adjusted so that the particles in the slurry in the separation cylinder 10 can obtain different centrifugal forces.

[0035] In this embodiment, the outlet pipe at the lower end of the feed trough 7 directly extends into the inner tube 4 , so that the raw materials, water and the dilute solution in the central tube 8 added from the feed trough 7 are mixed and directly enter the inner tube 4 .

[0036] In this embodiment, a liquid collecting box 18 is provided with a liquid collecting box vent pipe 22 and a liquid collecting box manhole door 23 at the lower part, which are used to discharge slurry and clean the liquid collecting box during maintenance respectively. A liquid level meter 21 is also provided in the liquid collecting box 18 to indicate the slurry level.

[0037] The specific operation process of the mineral source humic acid activation device for improving organic matter in cultivated land of the present invention is as follows:

[0038] 1) According to the designed output, a predetermined number of ceramic balls that meet the grading requirements and a certain amount of water are prepared, and the minimum particle size of the graded ceramic balls is larger than the pore size of the steel plate of the inner tube 4, and the ceramic balls and water are added into the inner tube 4 through the feed trough 7.

[0039] 2) Start the main transmission device 6, and after the spiral shaft runs stably, add the mineral humic acid raw material into the inner tube 4 through the feed trough 7. Under the stirring of the spiral shaft 1, the mineral humic acid raw material and water are mixed to form a homogeneous slurry, and the raw material particles and ceramic balls in the slurry are refined under the collision and grinding. At the same time, the lifting of the double-headed spiral blades causes the slurry to form a spiral up and down running composite circulation between the inner wall of the activation tube 2 and the inner tube 4. The circulation is blocked by the vortex plate 3, and a vortex is formed around it. The materials inside the vortex continue to collide and refine, and the organic matter and inorganic mineralized substances are further separated. The vortex containing high energy causes the chemical bonds of the humic acid functional groups to break and recombine, and by combining with water molecules, highly active organic matter with greater surface tension and viscosity is formed.

[0040] 3) The refined and activated slurry enters the pressure pump 15 from the overflow port 2, and enters the condenser 16 after being pressurized by the pressure pump 15, and is ejected through the nozzle in the condenser 16 to form a high-speed fluid tangentially entering the hydraulic classifier 17 for the first sorting. The large inorganic particles and large humic acid floccules with relatively large specific gravity are subjected to large centrifugal force and enter the liquid collecting tank 18 along the inner wall of the hydraulic classifier 17. The solid concentration in the slurry in the liquid collecting tank 18 can reach more than 60%. The inorganic ash and small-size organic matter with relatively small specific gravity enter the separation cylinder 10 upward through the pipe in the center of the hydraulic classifier 17.

[0041] 4) The light material entering the separation cylinder 10 is accelerated by the vortex blades 11, and the organic matter and inorganic ash are separated again due to the difference in centrifugal force. The organic matter is sucked into the low-pressure vortex area around the nozzle in the condenser 16 through the return pipe 9, and agglomerated there to form a larger gel group and enter the hydraulic classifier 17 for circulation and sorting. The ash and most of the water flow into the material tank 7 through the central pipe 8 and are used as raw material slurry mixing supplementary water.

[0042] 5) The organic matter and large inorganic particles in the liquid collecting tank 18 naturally settle and stratify according to their different specific gravities, and the large inorganic particles at the bottom are discharged by the submersible pump 20 at the bottom. The high-concentration and low-density humic acid activated aqueous solution is discharged from the finished product outlet pipe 19.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described herein or replace them in similar ways without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A mineral-source humic acid activation device for increasing organic matter in cultivated land, characterized in that: The invention comprises an activation cylinder, a separation cylinder, a pressure pump, a condenser, a hydraulic classifier and a liquid collecting box, wherein a spiral shaft is vertically suspended in the activation cylinder, and a main transmission device for driving the spiral shaft to rotate is arranged on the top of the activation cylinder; an inner cylinder is arranged between the activation cylinder and the spiral shaft, and a feed trough is arranged on the top of the activation cylinder, and the feed trough is used to add mineral humic acid raw materials, water and balls for refining the mineral humic acid raw materials into the inner cylinder; the inner cylinder is composed of a mesh structure, and the minimum particle size of the balls therein is larger than the mesh diameter; the activation cylinder is connected to the pressure pump through the overflow hole on the side wall thereof, and the pressure pump is connected to the hydraulic classifier through the condenser; the hydraulic classifier The lower end of the separator sends the high-density component into the liquid collecting tank, and the upper end sends the light-density component into the separation cylinder; a vortex blade is arranged inside one end of the separation cylinder, and a power device for driving the vortex blade to rotate is arranged outside, and the other end is connected with the feed trough through a central tube, and the return pipe on the side wall of the other end of the separation cylinder is connected with the condenser, and a nozzle is arranged in the condenser, and the slurry delivered by the pressure pump is sprayed through the nozzle and then tangentially enters the hydraulic classifier, so that a low-pressure vortex zone is formed at the nozzle outlet, and the low-pressure vortex zone absorbs small-size organic matter on the wall of the separation cylinder through the return pipe; a submersible pump is arranged at the bottom of the liquid collecting tank, and a finished product outlet pipe is arranged on the upper side wall.

2. The mineral source humic acid activation device for increasing organic matter in cultivated land according to claim 1 is characterized in that: The balls are ceramic balls.

3. The mineral source humic acid activation device for increasing organic matter in cultivated land according to claim 1 or 2, characterized in that: The spiral shaft is arranged at the center of the activation cylinder, and the inner cylinder and the activation cylinder are arranged coaxially.

4. The mineral-source humic acid activation device for increasing organic matter in cultivated land according to claim 1 or 2, characterized in that: The main transmission device is fixed on the top of the activation cylinder through a supporting frame, and the supporting frame is detachably connected to the activation cylinder.

5. The mineral-source humic acid activation device for increasing organic matter in cultivated land according to claim 1 or 2, characterized in that: The inner wall of the activation cylinder is provided with vortex plates at different heights.

6. The mineral-source humic acid activation device for increasing organic matter in cultivated land according to claim 1 or 2, characterized in that: The hydraulic classifier has two upper and lower cavities, the upper cavity is cylindrical, and the lower cavity is inverted conical. The upper part of the hydraulic classifier is connected to the separation cylinder through a connecting pipe inserted into the cavity, and the feed pipe of the hydraulic classifier is tangentially connected to the upper cavity.

7. The mineral-source humic acid activation device for increasing organic matter in cultivated land according to claim 1 or 2, characterized in that: The spiral shaft is welded with double-headed spiral blades, and the surfaces of the blades are covered with wear-resistant rubber.

8. The mineral-source humic acid activation device for increasing organic matter in cultivated land according to claim 1 or 2, characterized in that: A vent pipe and a manhole door are respectively arranged on the lower wall of the activation cylinder, and a manhole door is also arranged at a position on the inner cylinder and the activation cylinder corresponding to the manhole door on the activation cylinder.

9. The mineral-source humic acid activation device for increasing organic matter in cultivated land according to claim 1, characterized in that: Regulating valves are arranged on the pipelines before and after the booster pump, and pressure gauges are arranged on the connecting pipelines of the condenser and the hydraulic classifier.

10. The mineral-source humic acid activation device for increasing organic matter in cultivated land according to claim 1, characterized in that: The lower part of the liquid collecting box is provided with a liquid collecting box vent pipe and a liquid collecting box manhole door, and a liquid level meter is also provided in the liquid collecting box.

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