A system for producing liquid fertilizer using earthworm castings matrix solution

Abstract

The present invention discloses a system for producing earthworm manure matrix solution liquid fertilizer, comprising a vibrating and stirring device, a matrix solution storage tank, a mixing and stirring tank, and an earthworm liquid fertilizer storage tank; the vibrating and stirring device is connected to the matrix solution storage tank, the matrix solution storage tank is connected to the mixing and stirring tank, and the mixing and stirring tank is connected to the earthworm liquid fertilizer storage tank; the vibrating and stirring device includes an agitation tank, the inner bottom of which is inclined; the agitation tank is provided with an anti-blocking agitation and aeration grid, the anti-blocking agitation and aeration grid includes interconnected grid pipes and vertical bronchial tubes, the lower ends of the vertical bronchial tubes are provided with pointed nozzles, and the pointed nozzles of the vertical bronchial tubes are all parallel to the inner bottom of the agitation tank. This system not only solves the problem of low production efficiency and reduced matrix quality caused by the earthworm manure in the dead corner between the agitation tank and the pipeline not being agitated and boiling and the inconvenience in cleaning the earthworm manure residue, but also solves the problem of lack of activated storage of the earthworm manure matrix and uneven mixing of the earthworm manure matrix solution and the main raw materials, resulting in low fertilizer efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizer processing, relates to a liquid fertilizer processing system, and in particular to a vermicompost matrix solution liquid fertilizer production system. Background Art

[0002] The prior art "Agitation Device for Producing Liquid Fertilizer Matrix Solutions Based on Vermicompost" (ZL 201320007350.1) discloses an agitation device for fully dissolving and separating soluble nutrients in vermicompost for use as a liquid fertilizer matrix solution, and the "Production Method for Liquid Fertilizer Matrix Solutions Based on Vermicompost" (ZL20131 0005307.6) discloses mixing vermicompost with water in an appropriate weight ratio to obtain an earthworm extract mixture, which is then introduced into an agitation tank. Oxygen is introduced from the bottom of the agitation tank to agitate the earthworm extract mixture for several hours, thereby fully dissolving various nutrients in the vermicompost, earthworm secretions, earthworm eggs, decomposition products of earthworm corpses, and other earthworm-related nutrients, thereby obtaining a nutrient-rich liquid fertilizer matrix solution. Over more than ten years of practical production and use, these products have achieved results that are difficult to replace with any other liquid fertilizer, overcoming the disadvantages of low fertility and slow fertilizer efficiency of liquid organic fertilizers. They are widely used in the fields of organic vegetables, grains, fruits, tea, medicinal herbs, flowers, etc.

[0003] The above-mentioned prior art has the following problems during use:

[0004] 1. The device's one-sided gas supply makes it difficult for the gas in the porous pipe network to escape evenly from all holes. Especially when the bottom medium of the tank is under pressure, there is often almost no gas escaping from the other side of the porous pipe network, which affects the quality of the obtained matrix solution and production efficiency.

[0005] 2. Because the porous pipe network array is installed at the bottom of the pool, and because the pipes of the porous pipe network array have a diameter height, and there is a gap between the porous pipe network array and the pool bottom, the actual distance between the air outlet and the pool bottom is about 500 mm. As a result, the earthworm castings that sink gradually settle and accumulate at the bottom of the pool, forming a dead corner. The air outlet of the porous pipe network array is located on the upper half of the bottom pipe, and the entire bottom pipe of the porous pipe network array is buried in the earthworm leachate mixture. When gas leaks from the air holes of the porous pipe network array, if the pressure is too low, the agitation of the earthworm leachate mixture will not achieve the desired effect. If the pressure is too high, it will directly form an upward airflow, which also fails to achieve the desired agitation effect. Because the desired agitation effect cannot be achieved, the earthworm castings in the earthworm leachate mixture gradually sink. The accumulation of sediment causes the lateral vents of the porous pipe network array to gradually become blocked, and only the upper vents can release air. The air leaked from the porous pipe network array floats directly upward due to gravity, thus forming a sedimentation dead corner between the pipes.

[0006] 3. Since the porous pipe network array is set at the bottom of the pool, earthworm manure and feces can easily enter the pipe network through the vents (for example, when the air flow agitation is stopped to extract the matrix solution), causing the porous pipe network array to be blocked. Once it enters, it is very difficult to clean.

[0007] 4. It is very inconvenient to discharge earthworm manure and feces out of the pool. The porous pipe network array needs to be taken out before the earthworm manure and feces can be cleaned. Moreover, the porous pipe network array will be seriously damaged after being taken out and put in several times.

[0008] 5. When adding the main raw materials to the earthworm manure matrix solution, there is a lack of independent mechanical mixing device. Instead, the main raw materials are added to the agitation tank and mixed by agitation. The mixing force is too weak, so the various raw materials are not fully dissolved in the matrix solution, resulting in a lot of precipitation, a great waste, reduced fertilizer efficiency, and pollution to the environment.

[0009] 6. When the earthworm manure matrix solution cannot be mixed and dissolved with the main raw materials in time after being extracted, there is a lack of effective activation and storage links, which reduces the quality of the matrix solution, especially the active microorganisms in the matrix solution are greatly affected. Summary of the Invention

[0010] The object of the present invention is to provide a system for producing liquid fertilizer using a vermicompost matrix solution. The system not only solves the problems that the original porous pipe network array is arranged at the bottom of the agitation pool and the air outlet is arranged at the upper half of the pipe network, resulting in a dead angle between the bottom of the agitation pool and the pipe, the vermicompost cannot be agitated and boiled, the vermicompost residue enters the porous pipe network array through the air outlet and causes blockage, and the vermicompost residue is inconvenient to clean, resulting in low production efficiency and deterioration of matrix quality, but also solves the problems that the vermicompost matrix solution lacks an activation and storage link, the vermicompost matrix solution is unevenly mixed with the main raw materials, precipitation is wasted, the fertilizer efficiency is low, and the cost is high.

[0011] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a system for producing earthworm castings matrix solution liquid fertilizer is provided, which comprises a vibration stirring device, a matrix solution storage tank, a mixing and stirring tank and an earthworm liquid fertilizer storage tank; the discharge port of the vibration stirring device is connected to the liquid inlet of the matrix solution storage tank through a pipeline, the liquid outlet of the matrix solution storage tank is connected to the liquid inlet of the mixing and stirring tank through a pipeline, and the liquid outlet of the mixing and stirring tank is connected to the liquid inlet of the earthworm liquid fertilizer storage tank through a pipeline; the vibration stirring device comprises an agitation tank, the inner bottom of the agitation tank is inclined, and a discharge port is provided on one side of the agitation tank. A liquid inlet is provided on the other side, and a slag outlet is provided on the other side, the liquid outlet is located at the high side end of the bottom of the agitation pool, and the slag outlet is located at the low side end of the bottom of the agitation pool; an anti-blocking agitation and aeration grid is provided inside the agitation pool, and the top of the anti-blocking agitation and aeration grid is connected to the top of the agitation pool through a spring, and the anti-blocking agitation and aeration grid includes interconnected grid pipes and vertical bronchial tubes, and the front and rear sides of the grid pipes are symmetrically provided with a front air intake pipe and a rear air intake pipe, the height of the vertical bronchial tube is greater than the height of the grid pipe and extends into the bottom of the pool, and a pointed mouth is provided at the lower end of the vertical bronchial tube, and the plane formed by the pointed mouth of the vertical bronchial tube is parallel to the inner bottom plane of the agitation pool.

[0012] Furthermore, the grid pipeline includes an upper grid pipeline and a lower grid pipeline that are connected to each other, and the upper grid pipeline and the lower grid pipeline are both connected to and connected with the vertical bronchus; the setting of a double-layer grid pipeline can not only balance the air flow rate in the aeration grid, but also play a role in stabilizing the overall anti-blocking and agitation aeration grid, and the lower grid pipeline can also serve as a liquid height marker.

[0013] Furthermore, a filtering device is provided between the vibration and agitation device and the matrix solution storage tank, the discharge port of the agitation tank is connected to the upper inlet of the filtering device through a pipeline, and the lower outlet of the filtering device is connected to the matrix solution storage tank.

[0014] Furthermore, a circulation pipeline is provided between the filtering device and the matrix solution storage tank, so that the bacterial enzyme in the matrix solution can be further effectively activated, and the activated bacterial enzyme can further decompose the macromolecular organic matter in the matrix solution, thereby further improving the quality of the matrix solution.

[0015] Furthermore, the distance between the tip of adjacent vertical bronchi in the longitudinal and transverse directions is 120 to 180 mm, and the outer diameter of the vertical bronchi is 25 to 35 mm. This size design can ensure that during the vibration and agitation process, the circles formed by the activity of the tip do not overlap with each other and have a certain interval.

[0016] Furthermore, the bottom inclination of the agitation pool is 15°; since outflow is difficult if the inclination is too small, and unbalanced agitation will occur if the inclination is too large, when the bottom inclination of the agitation pool is 15 degrees, it can better balance the pros and cons of sufficient and balanced agitation of the earthworm castings matrix solution and smooth discharge of earthworm castings and feces residue.

[0017] Furthermore, the ratio of the distance from the drainage port of the agitation pool to the bottom of the agitation pool to the distance to the lower grid pipeline is 1:2.5, which is consistent with the ratio of adding earthworm castings to water.

[0018] Furthermore, the cross-sectional diameter of the liquid discharge port is set to about 30 mm, and the area is about one tenth of the cross-sectional area of the residue discharge port, ensuring that the earthworm manure residue content is below 5% when the matrix solution is extracted.

[0019] Furthermore, the distance between the pointed mouth of the vertical bronchus and the bottom of the agitation pool is 25 to 35 mm, ensuring that the earthworm castings on the bottom of the agitation pool can be fully agitated. The airflow ejected from the pointed mouth is sprayed on the bottom of the pool, forming a turbulent up and down rolling agitation of the airflow, water and earthworm castings, which prevents the earthworm castings from settling and there are no dead corners.

[0020] Furthermore, a driving mechanism is provided on the top of the anti-blocking agitation air grid, and the driving mechanism can control the pointed mouth of the vertical bronchus to move in a circular motion, spraying air on the bottom of the pool like a sweeper.

[0021] Furthermore, the driving mechanism includes a motor, an eccentric rod and a wheel. The motor is fixed to the top of the agitation pool through a motor bracket, the bottom of the motor is connected to the top of the eccentric rod through a connecting rod, the bottom of the eccentric rod is connected to the wheel, and the wheel is fixed to the top of the anti-blocking agitation and aeration grid.

[0022] Furthermore, the agitation pool is arranged on a pool seat.

[0023] Furthermore, a circulation pipeline is provided between the mixing and stirring tank and the earthworm liquid fertilizer storage tank to keep the bacterial enzyme in the earthworm liquid fertilizer effectively activated.

[0024] The earthworm casting substrate solution liquid fertilizer production system of the present invention has the following beneficial effects:

[0025] 1. The anti-blocking aeration grid provided by the present invention has the vertical bronchial tip facing downward, with the port parallel to the pool bottom, and the tip contracting, increasing the speed of airflow ejection. Furthermore, when the tip is buried in earthworm castings, the tip will be blocked. Thus, airflow will reach equilibrium in the upper grid pipe, lower grid pipe, and vertical bronchial pipe under equal pressure. When the pressure increases to a level sufficient to dislodge the earthworm castings blocking the tip, airflow will be uniformly ejected from the tip. Once airflow is ejected from the tip, earthworm castings or earthworm casting residue will not accumulate in the vertical bronchial pipe. The pointed nozzle faces the bottom of the agitation tank, where the airflow sweeps the earthworm castings, stirring them together with the water and air, causing them to boil and violently roll and swirl, thus forming a turbulent mixture of air, earthworm castings, and water. This not only eliminates dead corners at the bottom of the tank where earthworm castings or fecal residue can settle, but also fully integrates, oxygenates, and activates this turbulent mixture, differentiating, separating, and decomposing organic matter and its active ingredients from the earthworm castings into the liquid. This significantly improves the quality and production efficiency of the earthworm castings substrate solution compared to existing devices.

[0026] 2. The anti-blocking agitation and aeration grid provided in the present invention is arranged above the agitation pool. Only the vertical bronchus is buried in the leachate mixture, and the pointed mouth is downward, so it is not easy for earthworm castings or feces to enter the pipe. Even if a small amount of earthworm castings or feces enters the vertical bronchus, it will be brought out in the air flow jet, ensuring that no blockage will occur, thereby improving production efficiency.

[0027] 3. The bottom inclination of the agitation pool provided in the present invention is 15°, which ensures that after the earthworm matrix solution is extracted, the anti-blocking agitation and aeration grid is started to spray and sweep the earthworm manure and feces, and the earthworm manure and feces are smoothly discharged out of the pool; in addition, when cleaning the agitation pool, not only is it not necessary to remove the anti-blocking agitation and aeration grid, but the spraying and sweeping effect of the anti-blocking agitation and aeration grid is also utilized, which makes cleaning more convenient and can also extend the service life of the anti-blocking agitation and aeration grid.

[0028] 4. The present invention inputs the earthworm castings matrix solution and earthworm liquid fertilizer into a storage tank and keeps them activated regularly for effective activation, which is beneficial to improving the fertilizer efficiency of the earthworm matrix solution liquid fertilizer. Just like brewed wine, it requires a suitable storage environment and the longer it is stored, the better. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall connection structure of the earthworm casting matrix solution liquid fertilizer production system of the present invention;

[0030] Figure 2 for Figure 1 The front view of the medium vibration stirring device;

[0031] Figure 3 for Figure 1 Sectional view in the AA direction;

[0032] Figure 4 for Figure 5 Cross-sectional view in the middle BB direction;

[0033] Figure 5 The main view of the grid to prevent the agitation and aeration;

[0034] Figure 6 for Figure 5 Cross-sectional view in the mid-CC direction;

[0035] Figure 7 for Figure 5 Schematic diagram of the four-way valve used in;

[0036] Figure 8 for Figure 5 Schematic diagram of the five-way valve used in;

[0037] Figure 9 for Figure 5 Schematic diagram of the six-way valve used in;

[0038] Figure 10 for Figure 2 Main view of the middle agitation pool;

[0039] Figure 11 This is a schematic diagram of the turbulent upward and downward violent turbulence and rolling of air, water and feces formed by the sharp nozzle spray;

[0040] Figure 12 This is a comparison curve of the difference and goodness ratio of vibration and agitation;

[0041] Figure 13 This is a curve comparing the tip spray radius and the bubble rising time diameter;

[0042] Figure 14 The diagram is a comparison chart of volume ratio, quality advantage and cost advantage.

[0043] In the figure: 1. Motor bracket; 2. Motor; 3. Connecting rod; 4. Rotary disc; 5. Anti-blocking agitation and air flushing grid; 5-1. Front air intake pipe; 5-2. Rear air intake pipe; 5-3. Upper grid pipe; 5-4. Lower grid pipe; 5-5. Vertical bronchus; 5-6. Tip; 6. Agitation tank; 7. Slag outlet; 8. Gasket; 9. Cover plate; 10. Screw; 11. Tank seat; 12. Tank bottom; 13. Drain port; 14. Matrix solution chamber; 15. Water inlet; 16. Tension spring; 17. Eccentric rod; 18. Frame; 19. Matrix solution; 20. Earthworm manure residue; 21. Cart; 22. Conveyor belt; 23. Screening machine ; 24. Conveyor belt; 25. Vibrating and agitating device; 26. Compressed air pump; 27. Cart; 28. Valve; 29. Pipeline; 30. Pump; 31. Filter device; 32. Cart; 33. Valve; 34. Valve; 35. Pump; 36. Valve; 37. Valve; 38. Matrix solution storage tank; 39. Mixing and stirring tank; 39-1. Motor; 39-2. Agitator; 40. Earthworm liquid fertilizer storage tank; 41. Valve; 42. Valve; 43. Pump; 44. Valve; 45. Valve; 46. Automatic weighing and filling station; 47. Conveyor belt; 48. Cart; 49. Conveyor belt; 50. Vehicle. DETAILED DESCRIPTION

[0044] In order to explain in detail the technical content and structural features of the earthworm casting matrix solution liquid fertilizer production system of the present invention, further description will be given below in conjunction with the embodiments and accompanying drawings.

[0045] like Figure 1 、 2 , 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14, the earthworm cast matrix solution liquid fertilizer production system of the present invention includes a vibration stirring device 25, a filter device 31, a matrix solution storage tank 38, a mixing and stirring tank 39, an earthworm liquid fertilizer storage tank 40, and an automatic weighing and metering filling station 46. The discharge port of the vibration stirring device 25 is connected to the upper part of the filter device 31 through a pipeline 29, the lower part of the filter device 31 is connected to the liquid inlet of the matrix solution storage tank 38 through a pipeline, the liquid outlet of the matrix solution storage tank 38 is connected to the liquid inlet of the mixing and stirring tank 39 through a pipeline, the liquid outlet of the mixing and stirring tank 39 is connected to the liquid inlet of the earthworm liquid fertilizer storage tank 40 through a pipeline, and the liquid outlet of the earthworm liquid fertilizer storage tank 40 is connected to the automatic weighing and metering filling station 46 through a pipeline.

[0046] like Figure 2 、 3As shown in Figures 4, 5, 6, 7, 8, 9, and 10, the vibration stirring device specifically includes an agitation pool 6 and a pool seat 11 arranged at the bottom of the agitation pool 6. The agitation pool 6 is mounted on the pool seat 11. The average height of the pool seat 11 is about 600 mm, and the average height of the agitation pool 6 is about 900 mm. There is a matrix solution cavity 14 in the agitation pool 6. The inner bottom of the agitation pool 6 is inclined, that is, the inclination angle of the pool bottom 12 is 15°. If the inclination is too small, it is difficult for the earthworm castings to flow out, and if the inclination is too large, the agitation will be not balanced. Therefore, when the inclination of the bottom of the agitation pool is 15 degrees, it can better take into account the pros and cons of sufficient and balanced agitation of the earthworm castings matrix solution and the smooth discharge of the earthworm castings. A liquid discharge port 13 is provided on one side of the agitation pool 6, and a slag discharge port 7 is provided on the other side. A water injection port 15 is provided on the pool wall above the liquid discharge port 13. The liquid discharge port 13 is located at the high side end of the bottom of the agitation pool 6, and the slag discharge port 7 is located at the low side end of the bottom of the agitation pool 6. The slag discharge port 7 extends about 300 mm outside the pool wall of the agitation pool body. The slag discharge port 7 is about 200 mm high and 300 mm wide. There is a pre-buried screw 10 for the inlet port every 50 mm around the end of the slag discharge port 7. The screws 10 are evenly distributed around, about 20 in number. There is a cover plate 9 on the slag discharge port 7, and a square gasket 8 is provided between the cover plate 9 and the slag discharge port 7. There are circular holes corresponding to the screws 10 on both the square gasket 8 and the cover plate 9. During production, the corresponding circular hole of the gasket 8 is inserted into the screw 10, and then the corresponding circular hole of the cover plate 9 is inserted into the screw 10, and then tightened with a nut. After the vibration and agitation are completed, the anti-blocking agitation and aeration grid 5 is closed, and the matrix solution 9 is extracted out by the liquid discharge port 13. After extracting out the matrix solution 19, the anti-blocking agitation and aeration grid 5 is opened, and the vibration and agitation jet is used to increase the mobility of the vermicompost excrement slag 20. The bucket car (or other movable container) is placed below the slag discharge port 7, the nut is unscrewed, and the lower cover plate 9 is removed. The water content of the vermicompost excrement slag 20 remaining in the pond is about 70% (note: the original water content of vermicompost is about 30%, the organic matter is about 40%, and the earth is about 30%. The vermicompost excrement slag refers to earth and a small amount of organic matter), presents a slurry state, flows out of the slag discharge port 7 under the effect of gravity and the vibration and agitation of the anti-blocking agitation and aeration grid, flows into the bucket car, and the vermicompost excrement slag is transported away as a solid organic fertilizer base material. After the worm castings and excrement residue 20 are cleaned, the power supply is turned off, the anti-blocking agitation air-injection grid 5 stops vibrating and stirring the air jet, the cover plate 9 is covered, and the nut is tightened for use during the next production.

[0047] The ratio of the distance from the drain port 13 to the bottom of the agitation tank 6 to the distance from the lower grid pipe 5-4 is 1:2.5, which is consistent with the ratio of earthworm castings to water. The cross-sectional diameter of the drain port 13 is approximately 30 mm, which is much smaller than the cross-sectional area of the residue discharge port 7. When extracting the substrate solution, the anti-blocking agitation and aeration grid 5 is in a stopped state, ensuring that the earthworm castings and feces content of the extracted substrate solution does not exceed 5%.

[0048] An anti-blocking agitation and air-injection grid 5 is provided inside the agitation pool 6. The top of the anti-blocking agitation and air-injection grid 5 is connected to the top of the agitation pool 6 via a tension spring 16. The anti-blocking agitation and air-injection grid 5 includes an upper grid pipe 5-3, a lower grid pipe 5-4 and a vertical bronchus 5-5 that are in communication. The lower grid pipe 5-4 is connected to and communicates with the vertical bronchus 5-5. The front intake pipe 5-2 and the rear intake pipe 5-1 are symmetrically provided on the front and rear side pipes of the upper grid pipe 5-3. At the intake pipe node of the upper grid pipe 5-3, a five-way valve is used to connect the left and right side pipes, the lower vertical bronchus 5-5, the vertical and horizontal grid pipes on one side and the intake pipe on one side. Figure 8 The other four side pipes of the upper grid pipeline 5-3 are connected to the lateral vertical and horizontal grid pipes, and the left and right side pipes, the lower vertical bronchus 5-5, the four side pipes and the lateral vertical and horizontal grid pipes are connected by a four-way valve. Figure 7 As shown. The vertical and horizontal grid pipes in the middle of the upper grid pipe 5-3 connect the vertical and horizontal side pipes with the vertical bronchus 5-5 below, and are connected by a five-way valve. The four side pipes of the lower grid pipe 5-4 are connected to the lateral vertical and horizontal grid pipes, and the five-way valve connects the left and right side pipes, the vertical bronchus 5-5 below, the four side pipes and the lateral vertical and horizontal grid pipes. The vertical and horizontal grid pipes in the middle of the lower grid pipe 5-4 connect the vertical and horizontal side pipes with the upper and lower vertical bronchus, and are connected by a six-way valve, as shown. Figure 9 As shown. The height of the vertical bronchus 5-5 is greater than the height between the upper grid pipe 5-3 and the lower grid pipe 5-4. A pointed mouth 5-6 is set at the lower end of the vertical bronchus 5-5, and the pointed mouths 5-6 of the vertical bronchus are parallel to the inner bottom of the agitation pool 6. The pointed mouth 5-6 is convergent, and its area is about one-third of the cross-sectional area of the vertical bronchus 5-5. The setting of this pointed mouth 5-6, on the one hand, increases the speed of the airflow ejection, and on the other hand, when it is buried in earthworm castings, the pointed mouth 5-6 will be blocked, so that the airflow will reach equilibrium in the upper grid pipe 5-3, the lower grid pipe 5-4, and the vertical bronchus 5-5 under the same pressure. When the pressure increases to a level greater than the earthworm castings blocked by the pointed mouth 5-6, the airflow will be uniformly ejected from the pointed mouth 5-6. Once the airflow is ejected from the pointed mouth 5-6, no earthworm castings or earthworm castings residue will accumulate in the vertical bronchus 5-5. The pointed nozzles 5-6 are facing the bottom of the agitation pool, and the air flow will spray the earthworm castings on the bottom of the pool, stirring the earthworm castings together with water and air to boil, and violently stirring and rolling up and down, thus forming a turbulent agitated mixture of air, earthworm castings and water. This not only ensures that there are no dead corners at the bottom of the pool where earthworm castings or feces residue are deposited, but also makes the turbulent agitated mixture of the three fully integrated, oxygenated and activated, and differentiates, separates and decomposes the organic matter and its effective components from the earthworm castings into liquid. Compared with the original device, the quality and production efficiency of the earthworm castings substrate solution are greatly improved (such as Figure 11As shown). When in use, the anti-blocking agitation and aeration grid 5 is placed in the agitation pool 6, and the pointed mouths 5-6 point to the bottom of the pool. The distance between the pointed mouths 5-6 of adjacent vertical bronchi in the longitudinal and transverse directions is 120 to 180 mm, and the outer diameter of the vertical bronchus 5-5 is 25 to 35 mm. The design of this size can ensure that during the vibration and agitation process, the circles formed by the movement of the pointed mouths do not overlap with each other and have a certain interval. The distance between the pointed mouths 5-6 of the vertical bronchi and the inner bottom of the agitation pool 6 is 25 to 35 mm, ensuring the formation of a turbulent agitated mixture of gas, earthworm castings and water, and the earthworm castings at the bottom of the agitation pool can be fully agitated, boiled and oxygenated, and there is no dead angle.

[0049] A driving mechanism is provided at the top of the anti-blocking agitation and aeration grid 5, and the driving mechanism can control the pointed tips of the vertical bronchial tubes to move in a circular motion, spraying air on the bottom of the pool like a sweeper. The driving mechanism includes a motor 2, an eccentric rod 17, a wheel 4, a motor bracket 1, a connecting rod 3 and a frame 18. The motor 2 is fixed to the top of the agitation pool 6 through the motor bracket 1, and the bottom of the motor 2 is connected to the top of the eccentric rod 17 through the connecting rod 3. The bottom of the eccentric rod 17 is connected to the wheel 4, and the wheel 4 is fixed to the top of the anti-blocking agitation and aeration grid 5. The frame 18 is fixed to the upper port of the agitation pool 6. The anti-blocking agitation and aeration grid 5 is supported by 8 tension springs 6 on the four sides, so that the lower end pointed tips 5-6 of the anti-blocking agitation and aeration grid 5 are about 30 mm away from the bottom 12 of the agitation pool 6. The plane formed by each lower end pointed tip 5-6 is parallel to the bottom surface 12 of the pool.

[0050] When the motor 2 rotates, it drives the connecting rod 3 to rotate, and the connecting rod 3 drives the eccentric rod 17 to rotate. The rotation of the eccentric rod 17 drives the anti-blocking agitation and aeration grid 5 to vibrate and stir. During the vibration and stirring process of the anti-blocking agitation and aeration grid 5, each of the sharp nozzles 5-6 is drawing a circle. When compressed gas is input into the air intake pipe, the sharp nozzles 5-6 spray air on the bottom of the pool like a sweeper. The position of the eccentric rod 17 in the wheel 4 is controlled to ensure the amplitude of the vibration (the radius is about one-third of the distance between the two sharp nozzles 5-6), and the distance between the anti-blocking agitation and aeration grid 5 and the wall of the agitation pool 6 is kept at about one-half of the distance between the two sharp nozzles 5-6.

[0051] like Figure 1 As shown, a circulation pipeline is provided between the filtering device 31 and the substrate solution storage tank 38, and a valve 33, a pump 35, a valve 34, a valve 36, and a valve 37 are provided on the circulation pipeline. A circulation pipeline is also provided between the mixing and stirring tank 39 and the earthworm liquid fertilizer storage tank 40, and a valve 41, a valve 42, a pump 43, a valve 44, and a valve 45 are provided on the circulation pipeline. The mixing and stirring tank 39 is provided with a motor 39-1 and a stirring paddle 39-2 connected to the motor 39-1.

[0052] The working process of the earthworm casting substrate solution liquid fertilizer production system of the present invention is as follows:

[0053] 1. The earthworm manure is transported to the conveyor belt 22 by a shovel or a cart 21. The conveyor belt 22 transports the earthworm manure to the screening machine 23. The screening machine 23 screens the earthworm manure to remove impurities, lumps, etc. After screening by the screening machine 23, high-quality and uniform earthworm manure is obtained. It is then sent to the vibration stirring device 25 by the conveyor belt 24. The vibration stirring device 25 opens the water injection port 15 at the same time, and water is added according to the ratio of 2.5 volume water to 1 volume of earthworm manure. The vibration stirring device 25 starts the motor 2 at the same time, and the motor 2 The anti-blocking agitation and aeration grid 5 is driven to vibrate and stir continuously. The vibrating and agitating device 25 simultaneously starts the compressed air pump 26. The compressed air pump 26 inflates the anti-blocking agitation and aeration grid 5. The air flow is ejected toward the bottom 12 of the agitation pool 6 through the pointed mouth 5-6 at the lower end of the anti-blocking agitation and aeration grid 5. While vibrating and spraying the air flow, water and earthworm manure are added in a ratio of 2.5:1 until the lower grid pipe 5-4 of the anti-blocking agitation and aeration grid 5 is flush with the liquid and the addition of water and earthworm manure is stopped.

[0054] 2. After that, continue spraying, vibrating and agitating for 5 to 8 hours (if the indoor temperature is above 30 degrees, 5 hours is enough; if the indoor temperature is 15 degrees, 8 hours is required. If the temperature is lower, the time will be correspondingly longer). After the spraying, vibrating and agitating are completed, turn off the motor 2, turn off the compressed air pump 26, and stop the anti-blocking agitation and aeration grid 5 from vibrating and inflating. Open the valve 28, turn on the pump 30, and draw the earthworm castings matrix solution 19 in the vibrating and agitating device 25 into the filter device 31. The mesh number of the filter device 31 is not less than 250 meshes. After filtering, clean the filtered residue into the cart 32, and then pull it to the solid organic fertilizer base material workshop. The filtered matrix solution is transported into the matrix solution storage tank 38 through the pump 35. The matrix solution in the matrix solution storage tank 38 needs to be circulated and oxygenated for more than 2 hours every 24 hours. The method is to close the valve 33, Valve 37 opens valves 34 and 36, and pump 35 is turned on for a circulation of more than two hours. The substrate solution is extracted from the bottom outlet of substrate solution storage tank 38 by pump 35 and then delivered to the upper inlet of substrate solution storage tank 38. When the substrate solution flows into substrate solution storage tank 38 from the inlet, under the combined action of kinetic energy and potential energy, the substrate solution liquid is injected into the substrate solution in the substrate solution storage tank by sweeping the air flow. After more than two hours of circulating oxygen flushing, a large amount of oxygen dissolves in the substrate solution, thereby maintaining the further effective activation of the bacterial enzyme in the substrate solution. The activated bacterial enzyme further decomposes the macromolecular organic matter in the substrate solution. After the circulating oxygen flushing is completed, valves 34 and 36 are closed, and pump 35 is then shut down.

[0055] 3. After the matrix solution in the vibration and agitation device 25 is completely pumped out by the pump 30, the valve 28 is closed, and then the pump 30 is shut down. The cover plate 9 of the slag discharge port 7 of the vibration and agitation device 25 is opened, the compressed air pump 26 is started, and the motor 2 is started. The vermicompost slag in the vibration and agitation device 25 increases in fluidity and gains kinetic energy under the sweeping airflow ejected from the sharp nozzles 5-6. Under the action of kinetic energy and potential energy, the slag discharge port 7 is flowed into the cart 27, and then the slag is taken to the solid organic fertilizer base material workshop. After the vermicompost slag is completely cleaned up, the compressed air pump 26 and the motor 2 are shut down, and the cover plate 9 is closed.

[0056] 4. When earthworm liquid fertilizer production is needed, valves 34 and 37 are opened, valves 33 and 36 are closed, and pump 35 is started. The matrix solution in matrix solution storage tank 38 is pumped into mixing tank 39 via pump 35. Simultaneously, a certain proportion of the main raw materials, depending on the product specifications, are placed on conveyor belt 47 from cart 48 and fed into mixing tank 39. The main raw materials and matrix solution are continuously fed into mixing tank 39 in a certain proportion and order. Simultaneously, motor 39-1 is started to mix and stir. Mixing and stirring, feeding, and adding matrix solution are continued until the mixing tank reaches two-thirds of its volume. Then, the feeding of the main raw materials and matrix solution is stopped. Valves 34 and 37 are closed, and pump 35 is turned off. Motor 39-1 continues mixing and stirring for 8 to 10 hours (8 hours in summer, 10 hours in winter). After the mixing is completed, sampling and testing are carried out. If the product indicators meet the preset specifications, valves 42 and 44 are opened, valves 41 and 45 are closed, and pump 43 is turned on to transfer the earthworm liquid fertilizer in the mixing tank 39 to the earthworm liquid fertilizer storage tank 40 through pump 43. If any one or more indicators do not meet the preset specifications during the sampling test, the corresponding amount of raw materials is supplemented according to the relevant defect indicators. The supplementary raw materials are placed on the conveyor belt 47 via the cart 48 and transported to the mixing tank 39. At the same time, motor 39-1 is started to mix and stir. The mixing is continued for 8 to 10 hours. After the mixing is completed, sampling and testing are carried out again. This process is repeated until all indicators meet the preset specifications.

[0057] 5. The earthworm fertilizer in the earthworm fertilizer storage tank 40 requires a two-hour oxygen cycle every 72 hours. This cycle involves closing valves 42 and 45, opening valves 41 and 44, and turning on pump 43. Pump 43 then pumps the earthworm fertilizer from the outlet of the earthworm fertilizer storage tank 40 to the inlet of the tank. There, the fertilizer enters the tank 40. Under the influence of kinetic and potential energy, the fertilizer is injected into the tank 40 along with the airflow. This cycle of oxygenation lasts for more than two hours to effectively activate the bacterial enzymes in the earthworm fertilizer. After this, valves 41 and 44 are closed, and pump 43 is shut down.

[0058] 6. When the earthworm liquid fertilizer needs to be packaged for shipment, close valves 42 and 44, open valves 41 and 45, start pump 43, and pump the earthworm liquid fertilizer in the earthworm liquid fertilizer storage tank 40 out of the outlet by pump 43 and transport it to the automatic weighing and metering filling station 46 for filling. The filled earthworm liquid fertilizer is transported to vehicle 50 via conveyor belt 49 and delivered to the customer.

[0059] Different customers, different plants, and different periods require different specifications and standards of earthworm liquid fertilizer, which need to be customized. Therefore, there can be several different earthworm liquid fertilizer storage tanks 40 to store earthworm liquid fertilizers of different specifications and standards in order to achieve customized services.

[0060] 1. Experimental data and theoretical analysis of the vibration and agitation tank bottom with an inclination of 15°.

[0061] There are many factors closely related to the slope of the pool bottom, but the most important ones are the smooth discharge of feces and the balance of water pressure at the tip. Compared with these two factors, the influence of other factors can be ignored.

[0062] In terms of smooth excrement discharge, the larger the angle, the better; in terms of balanced water pressure at the pointed mouth, the smaller the angle, the better. These two factors are in conflict. How to find a reasonable balance between these two contradictions is one of the key points of this application.

[0063] According to the experimental data on the relationship between the time it takes to discharge feces and the angle of inclination of the pool bottom (Table 1 below), the time is less than ten minutes after the inclination angle reaches 35°. Therefore, increasing the angle further is of little significance. Therefore, the angle analysis is limited to between 0° and 35°.

[0064] Table 1 Comparison test of the tilt angle of the bottom of the vibration agitation pool and the time required to clean the earthworm manure residue

[0065] Tilt angle 0° 5° 10° 15° 20° 25° 30° 35° With spraying ＞3h 105m 63m 38m 25m 17m 12m 9m No spraying ＞24h 762m 407m 213m 138m 75m 40m 25m

[0066] Under the same conditions, when discharging manure residue, such as when there is a jet of an air grid pointed nozzle, the main factor is gravity. The relationship between gravity and angle is a sine relationship, with a minimum of 0 and a maximum of 1, which is 0.574 at 35°. This is basically consistent with the test data above. That is, at 35°, the gravity effect is 0.574, plus the manure residue has a moisture content of about 70%, and with the jet of air from the pointed nozzle, the fluidity is already extremely high, and the discharge is very smooth. Therefore, we set the slag discharge effect at 0° as the worst and the slag discharge effect at 35° as the best. Taking the best 35° as the basic data, the sine values of different angles are used as the denominator to divide them to get the difference-to-best ratio, as shown in Table 2 below.

[0067] Table 2 Relationship between earthworm manure discharge and the bottom tilt angle of the vibration agitation tank under natural gravity

[0068] Tilt angle 0° 5° 10° 15° 20° 25° 30° 35° Sine value 0 0.087 0.174 0.259 0.342 0.422 0.5 0.574 Slag removal effect Worst Better Chajabi infinity 6.60 3.30 2.22 1.68 1.36 1.15 1

[0069] As for the balance of water pressure at the spout, if it is balanced, the vibration and agitation will be balanced and the effect will be best; if it is unbalanced, the vibration and agitation will be unbalanced and the effect will be poor. The water pressure difference at the spout is related to the tangent value of the pool bottom inclination. The difference between the shallowest and deepest points at different angles is in a tangent relationship. Table 3 below is analyzed based on the cross-sectional area of the agitation pool of 1 meter * 1 meter and the average water depth at the lower grid of 0.98 meters. The best setting is when the pool bottom inclination is 0°, the tangent value is 0, and the water pressure at the shallowest and deepest spouts is 0.980N / cm2. When the pool bottom inclination is 35°, it is set to be poor, the tangent value is 0.700, and the water pressure at the deepest point is 2.111 times that of the shallowest. We use the ratio of the shallowest and deepest water pressures at different angles as the difference-to-best ratio data analysis, and this analysis is basically consistent with the tangent data analysis. Difference-to-Best Ratio = (2.111-1.000)*A / (2.111-A), where A represents the water pressure ratio at different angles. This leads to the data analysis in Table 3 below.

[0070] Table 3 Comparison of the inclination angle of the bottom of the vibration agitation pool and the water pressure difference at the tip of the aeration grid

[0071]

[0072] like Figure 12 As shown in the vibration and agitation difference and ratio comparison curve, the optimal balance point of the two factors should be around 16°. Considering that the influence of water pressure balance on quality is greater than the smoothness of slag discharge, one is quality and the other is efficiency, and quality is more important than efficiency, so the optimal pool bottom inclination is 15°.

[0073] 2. Experimental data and analysis of the volume ratio of earthworm castings to water set at 1:2.5

[0074] We conducted seven sets of experiments by changing the volume ratio of earthworm manure to water while keeping the total volume unchanged. The volume ratio of earthworm manure to water ranged from 1:1 to 1:4.

[0075] Table 4 Statistics and analysis of test data under different volume ratios

[0076]

[0077] Among different volume ratios, there are three key factors to consider: Two factors primarily influence the quality of the substrate solution. One is that using more earthworm castings results in less substrate solution; in other words, the lower the residue-to-liquid ratio, the higher the quality. Another factor influencing quality is the degree of aeration: the higher the degree of aeration, the higher the quality of the substrate solution. The degree of aeration is primarily reflected in the fact that smaller bubbles form, the higher the degree of aeration; longer bubbles float, the higher the degree of aeration; and the larger the nozzle sweep radius, the higher the degree of aeration. Yet another factor to consider is controlling production costs while meeting basic specifications and standards.

[0078] The data in Table 4 shows that the radius of the pointed nozzle sweep increases with increasing volume ratio. That is, the higher the volume ratio, the thinner the liquid in the agitation tank, the smaller the resistance of the pointed nozzle sweep, and thus the larger the radius, the wider the range of the agitation, and the higher the degree of oxygen incorporation through the agitation. The rising velocity of bubbles formed by the pointed nozzle sweep increases with increasing volume ratio. That is, the higher the volume ratio, the thinner the liquid in the agitation tank, the lower the specific gravity, and the smaller the resistance (tension) to the bubbles' rise. This increases the rising velocity, shortens the rising time, and reduces the degree of oxygen incorporation through the agitation. The radius of bubbles generated by the pointed nozzle sweep decreases with increasing volume ratio at relatively low volume ratios, reaching a minimum at volume ratios of 1:2.5 and 1:3. Thereafter, it increases with increasing volume ratio. In other words, at relatively low volume ratios, the liquid is very thick, and bubbles cannot rise unless their diameter reaches a certain value, resulting in a slow rise. When a certain dilution is reached, the spray resistance decreases, the spray airflow increases, the spray range increases, and the bubbles formed also increase. As for the integration degree of the vibration-stirring oxygen flushing, the smaller the bubble, the better the integration degree.

[0079] From the experimental data of the three factors of sweep radius, bubble rising time and bubble diameter, we can see that the degree of oxygen fusion in the vibration stirring is directly proportional to the increase of sweep radius, and the degree of fusion is inversely proportional to the increase of bubble rising time. The best fusion degree is achieved when the volume ratio of bubble diameter is 1:2.5 or 1:3. The curve formed by the three is as follows: Figure 13 As shown in the figure, from the analysis of the influence of fusion degree on quality, the ideal volume ratio is between 1:2 and 1:3.

[0080] Another comparison is that the matrix solution absorption rate is inversely proportional to its quality. As the absorption rate increases, the quality decreases. The matrix solution absorption rate is also inversely proportional to the production cost. As the absorption rate increases, the cost decreases. Figure 14 The comparison curve of quality advantage and cost advantage is shown in the figure. The reasonable balance range is between 1:2 and 1:3.

[0081] The above disclosure is merely a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. A system for producing liquid fertilizer from earthworm castings, characterized by: The invention comprises a vibration stirring device, a matrix solution storage tank, a mixing and stirring tank and an earthworm liquid fertilizer storage tank; the discharge port of the vibration stirring device is connected to the liquid inlet of the matrix solution storage tank through a pipeline, the liquid outlet of the matrix solution storage tank is connected to the liquid inlet of the mixing and stirring tank through a pipeline, and the liquid outlet of the mixing and stirring tank is connected to the liquid inlet of the earthworm liquid fertilizer storage tank through a pipeline; the vibration stirring device comprises an agitation tank, the inner bottom of the agitation tank is inclined, a discharge port is provided on one side of the agitation tank, and a slag discharge port is provided on the other side, and the discharge port is located at the agitation tank. The bottom of the turbulence pool is at the high side end, and the slag discharge port is located at the low side end of the bottom of the turbulence pool; an anti-blocking turbulence and aeration grid is arranged inside the turbulence pool, and the top of the anti-blocking turbulence and aeration grid is connected to the top of the turbulence pool through a spring, and the anti-blocking turbulence and aeration grid includes interconnected grid pipes and vertical bronchial tubes, and the front and rear sides of the grid pipes are symmetrically provided with a front air intake pipe and a rear air intake pipe, the height of the vertical bronchial tube is greater than the height of the grid pipe and extends into the bottom of the pool, and a pointed mouth is provided at the lower end of the vertical bronchial tube, and the plane formed by the pointed mouth of the vertical bronchial tube is parallel to the inner bottom surface of the turbulence pool; A driving mechanism is provided on the top of the anti-blocking and agitating air-injection grid, and the driving mechanism can control the pointed mouth of the vertical bronchus to move in a circular motion; The grid pipeline includes an upper grid pipeline and a lower grid pipeline that are connected to each other, and the upper grid pipeline and the lower grid pipeline are both connected to and communicate with the vertical bronchus; The bottom inclination of the stirring pool is 15°.

2. The earthworm casting substrate solution liquid fertilizer production system according to claim 1, characterized in that: A filtering device is provided between the vibration stirring device and the matrix solution storage tank. The discharge port of the stirring tank is connected to the upper inlet of the filtering device through a pipeline, and the lower outlet of the filtering device is connected to the matrix solution storage tank.

3. The earthworm casting substrate solution liquid fertilizer production system according to claim 2, characterized in that: A circulation pipeline is provided between the filtering device and the matrix solution storage tank.

4. The earthworm casting substrate solution liquid fertilizer production system according to claim 2, characterized in that: The ratio of the distance from the discharge port of the agitation pool to the bottom of the agitation pool to the distance to the lower grid pipeline is 1:2.

5.

5. The earthworm casting substrate solution liquid fertilizer production system according to claim 1, characterized in that: The cross-sectional area of the liquid discharge port is one tenth of the cross-sectional area of the slag discharge port.

6. The earthworm casting substrate solution liquid fertilizer production system according to claim 1, characterized in that: The distance between the tip of the vertical bronchus and the inner bottom of the agitation pool is 25 to 35 mm.

7. The earthworm casting substrate solution liquid fertilizer production system according to claim 1, characterized in that: A circulation pipeline is arranged between the mixing and stirring tank and the earthworm liquid fertilizer storage tank.

Images