Blending device and production system for producing formula fertilizer containing microorganisms

Abstract

The utility model relates to the technical field of fertilizer production equipment, and discloses a mixing device and a production system for producing a formula fertilizer containing microorganisms. The mixing device for producing the formula fertilizer containing the microorganisms comprises a material storage tank for storing a liquid fertilizer; a stirring bin is formed in the stirring tank, and the stirring bin is used for containing solid fertilizer; the spraying component is arranged in the stirring bin, the spraying component comprises a nozzle, and the nozzle faces the feeding path of the solid fertilizer and is used for spraying the solid fertilizer in the feeding process. The spraying component is arranged in the stirring bin, the nozzle faces the feeding path of the solid fertilizer and is used for spraying the solid fertilizer in the feeding process, hardening can be avoided, meanwhile, the mixing uniformity of the liquid fertilizer and the solid fertilizer is improved, the use amount of the liquid fertilizer is reduced, and the production efficiency is improved. The problems that in the prior art, in the mixing process of the microbial fertilizer and the solid fertilizer, the mixing uniformity is poor, and the dosage of the microbial fertilizer is large are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer production equipment, in particular to a mixing device and a production system for producing microbial formula fertilizer. Background Art

[0002] Microbial fertilizers, also known as microbial inoculants, bacterial fertilizers or bacterial agents, are different from chemical fertilizers, organic fertilizers and green manures. They are living products with high efficiency and environmental protection, and meet the requirements of sustainable agricultural development. Among them, plant growth-promoting rhizobacteria (PGPR), as a hot topic in microbial fertilizer research, have received extensive attention from researchers in microbiology, plant pathology, soil science, biology and other disciplines.

[0003] At present, the role of microbial fertilizers is mainly reflected in the following aspects: first, increasing organic matter and improving soil fertility; second, controlling the number of beneficial microorganisms through mutual competition and occupation between microorganisms, which can increase the conversion of nutrients and promote the absorption of nutrients by plants. Third, microbial metabolites stimulate the growth of crops. The mechanism of action of microbial fertilizers can be summarized as follows: first, fertilizers containing nitrogen-fixing bacteria such as rhizobia can fix nitrogen in the atmosphere, increase plant nitrogen nutrition, and increase yield; second, microorganisms that can decompose organic phosphorus compounds and inorganic phosphorus compounds can decompose to produce organic and inorganic acids and improve soil; third, silicate bacteria decompose and convert insoluble potassium into effective potassium to provide plant growth needs; fourth, effective bacteria in microbial fertilizers increase the contact surface of plants in nutrients and promote nutrient absorption.

[0004] Currently, microbial fertilizers are mixed with solid fertilizers in an auger. This mixing method has certain requirements on the viscosity of the microbial fertilizer, which leads to poor mixing uniformity and easy compaction. In addition, the amount of microbial fertilizer used is also relatively large. Therefore, how to improve the mixing uniformity of microbial fertilizers and solid fertilizers while reducing the amount of microbial fertilizers used is an urgent problem that the industry needs to solve. Utility Model Content

[0005] The utility model provides a mixing device and a production system for producing a microbial formula fertilizer, which are used to solve the problems of poor mixing uniformity and high amount of microbial fertilizer in the process of mixing microbial fertilizer and solid fertilizer in the prior art.

[0006] The first aspect of the utility model provides a mixing device for producing a microbial formula fertilizer, comprising:

[0007] A storage tank, used for storing liquid fertilizer, wherein the liquid fertilizer contains a microbial agent;

[0008] A mixing tank having a mixing chamber formed therein, wherein the mixing chamber is used to store solid fertilizer;

[0009] A spraying component is arranged in the mixing bin, the spraying component is connected to the storage tank, and the spraying component includes a nozzle, the nozzle is oriented toward the feeding path of the solid fertilizer, and is used to spray the liquid fertilizer onto the solid fertilizer in the feeding process.

[0010] According to the mixing device for producing microbial formula fertilizer provided by the utility model, the nozzle is a fan-shaped nozzle.

[0011] The mixing device for producing microbial formula fertilizer provided by the utility model also includes:

[0012] The first stirring component is installed in the stirring tank and is used for stirring the solid fertilizer in the stirring bin and lifting the solid fertilizer at the bottom of the stirring bin.

[0013] The mixing device for producing microbial formula fertilizer provided by the utility model also includes:

[0014] A second stirring component is installed on the storage tank and is used for stirring the liquid fertilizer.

[0015] According to the mixing device for producing microbial formula fertilizer provided by the utility model, the second stirring component includes a second stirring paddle, and the second stirring paddle includes:

[0016] A second stirring shaft, one end of which is connected to a second driving assembly, and the second driving assembly is installed outside the storage tank;

[0017] A second stirring rod, wherein the middle portion of the second stirring rod is connected to the other end of the second stirring shaft, the second stirring rod is an arc-shaped structure, and the middle portion of the second stirring rod protrudes toward the bottom of the storage tank.

[0018] The mixing device for producing microbial formula fertilizer provided by the utility model also includes:

[0019] A heat-insulating sleeve is arranged on the outside of the storage tank and is used to keep the storage tank warm.

[0020] According to the mixing device for producing microbial formula fertilizer provided by the utility model, a delivery pipeline is arranged between the discharge port of the storage tank and the feed port of the spraying component; and further includes:

[0021] A flow pump is arranged in the delivery pipeline and is used to pump the liquid fertilizer in the storage tank to the spraying component.

[0022] The mixing device for producing microbial formula fertilizer provided by the utility model also includes:

[0023] A filter is arranged in the delivery pipeline and is located downstream of the flow pump.

[0024] The mixing device for producing microbial formula fertilizer provided by the utility model also includes:

[0025] A flow meter is arranged at the feed inlet of the spraying component, or arranged in the delivery pipeline and located downstream of the filter;

[0026] A control module is electrically connected to the storage tank, the flow pump and the flow meter.

[0027] The second aspect of the utility model provides a production system for producing microbial formula fertilizer, including a solid fertilizer production device and a mixing device for producing microbial formula fertilizer as described in any of the above items; the discharge port of the solid fertilizer production device is connected to the stirring bin of the mixing device for producing microbial formula fertilizer.

[0028] The utility model provides a mixing device and production system for producing microbial formula fertilizer. The mixing device is provided with a spraying component in a mixing bin, the spraying component is connected with a storage tank, and the nozzle of the spraying component faces the feeding path of the solid fertilizer, and is used to spray liquid fertilizer on the solid fertilizer in the feeding process. In other words, the nozzle sprays the solid fertilizer fed from the feeding port of the mixing tank and has not yet fallen to the bottom of the mixing bin, and the liquid fertilizer is sprayed on the surface of the solid fertilizer, which can avoid the occurrence of compaction, and at the same time improves the mixing uniformity of the liquid fertilizer and the solid fertilizer, reduces the amount of liquid fertilizer, and effectively solves the problems of poor mixing uniformity and high amount of microbial fertilizer in the process of mixing microbial fertilizer and solid fertilizer in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 The utility model is a schematic diagram of the structure of a mixing device for producing a microbial formula fertilizer.

[0031] Reference numerals:

[0032] 100. Storage tank;

[0033] 200, spraying parts; 210, spraying pipe; 220, nozzle;

[0034] 300, mixing tank;

[0035] 400, a first stirring member;

[0036] 500, second stirring member; 510, second driving assembly; 520, second stirring paddle; 521, second stirring shaft; 522, second stirring rod; 523, second horizontal connecting rod; 524, second vertical connecting rod; 525, second horizontal stirring rod;

[0037] 600, flow pump;

[0038] 700, filter;

[0039] 800, flow meter;

[0040] 900. Insulation cover. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0044] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] like Figure 1 As shown, a specific embodiment of the first aspect of the utility model provides a mixing device for producing a microorganism-containing formula fertilizer. The mixing device for producing a microorganism-containing formula fertilizer comprises a storage tank 100, a spraying component 200 and a stirring tank 300; the storage tank 100 is used to store liquid fertilizer, and the liquid fertilizer contains a microbial agent; a stirring chamber is formed inside the stirring tank 300, and the stirring chamber is used to store solid fertilizer; the spraying component 200 is arranged in the stirring chamber, and the spraying component 200 is connected to the storage tank 100, and the spraying component 200 includes a nozzle 220, and the nozzle 220 is oriented toward the feeding path of the solid fertilizer, and is used to spray the liquid fertilizer to the solid fertilizer in the feeding process.

[0047] In a specific embodiment of the utility model, a spraying component 200 is arranged in the mixing bin, the spraying component 200 is connected to the storage tank 100, and the nozzle 220 is oriented toward the feeding path of the solid fertilizer. The nozzle 220 is used to spray liquid fertilizer onto the solid fertilizer in the feeding process. In other words, the nozzle 220 sprays the solid fertilizer that is fed from the feeding port of the mixing tank 300 and has not yet fallen to the bottom of the mixing bin. The liquid fertilizer is sprayed on the surface of the solid fertilizer to avoid compaction. At the same time, the mixing uniformity of the liquid fertilizer and the solid fertilizer is improved, and the amount of liquid fertilizer used is reduced, which effectively solves the problems of poor mixing uniformity and large amount of microbial fertilizer used in the process of mixing microbial fertilizer and solid fertilizer in the prior art.

[0048] Through experimental comparison, it can be seen that when using the existing method of directly mixing liquid fertilizer with solid fertilizer, the amount of liquid fertilizer added reaches 1% to 3%, while using the device of this embodiment, the amount of liquid fertilizer added can be reduced by 5 to 10 times, thereby reducing the amount of liquid fertilizer used.

[0049] It is understood that liquid fertilizers include but are not limited to liquid microbial fertilizers, and solid fertilizers include but are not limited to granular organic fertilizers.

[0050] In some embodiments, the inner liner of the storage tank is made of 316 stainless steel or plastic; the volume is 1000L, and the outer wall can withstand a temperature of -30°C to 200°C.

[0051] In a specific embodiment of the utility model, the mixing device for producing microbial formula fertilizer also includes a first stirring component 400; the first stirring component 400 is installed in the stirring tank 300, and is used to stir the solid fertilizer in the stirring bin, and at the same time, is used to lift the solid fertilizer at the bottom of the stirring bin. Specifically, the first stirring component 400 is a weightless double-blade mixer to further improve the mixing uniformity. In the production process, after all the solid fertilizers are fed into the stirring bin, the solid fertilizers that fall to the bottom of the stirring bin have been sprayed with liquid fertilizers. The first stirring component 400 is started and stirred for one minute to further improve the mixing uniformity.

[0052] In a specific embodiment of the present invention, the nozzle 220 is a fan-shaped nozzle. A fan-shaped nozzle is a nozzle with a spray shape of a fan at various angles. In the fan-shaped spray form, the edge of the spray shape is clearly defined, and the guide plane processed by fine technology provides a uniform and high-impact spray shape. The fan-shaped nozzle can further improve the uniformity of the spray.

[0053] In some embodiments, the spraying component 200 includes a spraying pipe 210 and at least two fan-shaped nozzles; the spraying pipe 210 is horizontally arranged above the mixing bin and is connected to the discharge port of the storage tank 100; the fan-shaped nozzles are arranged on the spraying pipe 210, and gaps are left between adjacent fan-shaped nozzles, and the fan-shaped nozzles are used to spray the liquid fertilizer onto the solid fertilizer in the form of fan-shaped spray. The arrangement of the fan-shaped nozzles can improve the uniformity of spraying and make the mixing uniformity better.

[0054] In some embodiments, four fan-shaped nozzles are disposed on each spraying pipe 210 .

[0055] In some embodiments, the spraying surface of the nozzle 220 is perpendicular to the feeding surface of the solid fertilizer, so that the spray can be fully sprayed on the solid fertilizer.

[0056] In a specific embodiment of the utility model, the mixing device for producing microbial formula fertilizer also includes a second stirring component 500; the second stirring component 500 is installed in the storage tank 100, and is used to stir the liquid fertilizer, so that the solid part and the liquid part of the liquid fertilizer can be fully mixed, further improving the uniformity of the spraying and reducing the amount of liquid fertilizer.

[0057] In some embodiments, the second stirring component 500 includes a second driving component 510 and a second stirring paddle 520; the second driving component 510 is disposed outside the storage tank 100, and the second stirring paddle 520 is located inside the storage tank 100. The second driving component 510 drives the second stirring paddle 520 to rotate to achieve stirring of the liquid fertilizer, so that the solid part and the liquid part of the fertilizer are evenly mixed.

[0058] In some embodiments, the second driving assembly 510 includes a motor. Further, the motor has a power of 1800 W and a rotation speed of 0 to 700 rpm.

[0059] In some embodiments, the second stirring paddle 520 includes a second stirring shaft 521 and a second stirring rod 522; the upper end of the second stirring shaft 521 is connected to the second driving assembly 510, and the lower end of the second stirring shaft 521 is connected to the middle part of the second stirring rod 522. The second stirring rod 522 is an arc-shaped structure, and the middle part of the second stirring rod 522 protrudes toward the bottom of the storage tank 100, thereby avoiding a stirring dead corner at the bottom of the storage tank 100 and improving the uniformity of stirring.

[0060] In a specific embodiment of the utility model, the second stirring paddle 520 also includes a second horizontal connecting rod 523 and at least two second vertical connecting rods 524; the second horizontal connecting rod 523 is located above the second stirring rod 522, a second vertical connecting rod 524 is connected to one end of the second stirring rod 522 and one end of the second horizontal connecting rod 523, and another second vertical connecting rod 524 is connected to the other end of the second stirring rod 522 and the other end of the second horizontal connecting rod 523. The second vertical connecting rod 524 can stir the liquid fertilizer close to the side wall of the storage tank 100 to avoid stirring dead corners, while increasing the structural stability of the second stirring paddle 520 and reducing the risk of deformation of the second stirring rod 522 during stirring.

[0061] In some embodiments, the second stirring paddle 520 also includes a second horizontal stirring rod 525, which is connected to the second stirring shaft 521 and is located between the second horizontal connecting rod 523 and the second stirring rod 522, and is used to stir the liquid material close to the second stirring shaft 521. During the stirring process, the liquid fertilizer forms a vortex to improve the uniformity of the stirring.

[0062] In a specific embodiment of the utility model, the mixing device for producing microbial formula fertilizer also includes an insulation sleeve 900; the insulation sleeve 900 is mounted on the outside of the storage tank 100 to insulate the storage tank 100, ensuring that even when the device of this embodiment is used in a low temperature environment, the liquid fertilizer in the storage tank 100 will not solidify into ice, thereby improving the environmental adaptability of this embodiment.

[0063] In some embodiments, the insulation sleeve is an electrically heated insulation sleeve. Further, the maximum operating temperature of the insulation sleeve is 200° C., and the thickness of the insulation layer is 5 mm to 50 mm.

[0064] In a specific embodiment of the utility model, the mixing device for producing the microbial formula fertilizer further includes a flow pump 600; a delivery pipeline is provided between the discharge port of the storage tank 100 and the feed port of the spraying component 200; the flow pump 600 is provided in the delivery pipeline, and is used to pump the liquid fertilizer in the storage tank 100 to the spraying component 200. The flow pump 600 can not only pump the liquid fertilizer to the spraying component 200, but also control the flow rate into the spraying component 200, and can mix the liquid fertilizer with the solid fertilizer according to different mixing ratios.

[0065] Specifically, the delivery pipeline is a 20m φ20 316 stainless steel pipeline. The flow pump has a power of 980W, a head of 58m, and a flow rate of 3m 3 / h.

[0066] In a specific embodiment of the utility model, the mixing device for producing a microbial formula fertilizer further includes a filter 700; the filter 700 is arranged in the delivery pipeline and is located downstream of the flow pump 600. The filter 700 is used to filter impurities to prevent the impurities from clogging the nozzle 220. Compared with installing the filter 700 upstream of the flow pump 600, installing the filter 700 downstream of the flow pump 600 in this embodiment can avoid affecting the flow of the flow pump 600. Under the requirement of the same pump suction power, the flow pump 600 with a smaller rated power can be used in this embodiment to reduce costs.

[0067] In some embodiments, the filter 700 may also be installed at the feed port of the spraying component 200 .

[0068] Specifically, the filter 700 has a filtration aperture of 200 meshes.

[0069] In a specific embodiment of the utility model, the mixing device for producing microbial formula fertilizer also includes a flow meter 800 and a control module; the flow meter 800 is arranged at the feed inlet of the spraying component 200, or the flow meter 800 is arranged in the delivery pipeline and is located downstream of the filter 700; the control module is electrically connected to the storage tank 100, the flow pump 600 and the flow meter 800. Specifically, the discharge port of the storage tank 100 is provided with a valve, and the valve is electrically connected to the control module; the control module outputs a first control instruction, the first control instruction controls the flow pump 600 to start after the first time threshold, and the flow pump 600 pumps the liquid fertilizer in the storage tank 100 into the filter 700, the flow meter 800, the spraying pipeline 210 and the fan nozzle in sequence to realize the spraying of solid fertilizer. The flow meter 800 feeds back the recorded cumulative flow information to the control module; when the cumulative flow information reaches the cumulative flow information threshold, the control module outputs a second control instruction, the second control instruction controls the valve to close, and controls the flow pump 600 to close after the second time threshold.

[0070] Specifically, the metering range of the flow meter is 0.18 L / min to 9.8 L / min.

[0071] In a specific embodiment of the utility model, a normally closed delay switch is also included; the normally closed delay switch is electrically connected to the control module. After the valve is opened, the control module controls the normally closed delay switch to delay the first time threshold to open, and the flow pump 600 is started at the same time.

[0072] The following is a detailed description of the production process of the utility model, taking the liquid fertilizer as a microbial agent and the solid fertilizer as a granular organic fertilizer as an example:

[0073] Cleaning: Before inserting the second stirring member 500 into the storage tank 100, clean the second stirring paddle 520 of the second stirring member 500 and the surrounding area of ​​the storage tank 100 with steam or chemical disinfectant. It is recommended to clean the conveying pipeline with clean water after completing the production of the microbial agent spraying package blended fertilizer product. When not in use, try to remove the fan nozzle and store it in a dust-free place.

[0074] Production: Before spraying and coating the microbial agent, the storage tank 100 containing the microbial agent needs to be stirred under the action of the second stirring component 500, with a maximum speed of 700 rpm and a stirring time of at least 10 minutes. During the spraying process, the speed of the second driving component 510 of the second stirring component 500 can be maintained at 50% of the maximum speed until the end of production. If the production environment is stably below 0°C, the insulation cover 900 needs to be powered on for heating to ensure the fluidity of the microbial agent raw material.

[0075] Filtration: The microbial agent needs to pass through the filter 700 (with a built-in 200-mesh screen) to prevent the nozzle 220 from being blocked.

[0076] Connection: Pump the microbial agent (1L to 12L) into the pipeline, and spray it on the surface of the solid fertilizer through the flow pump 600, the filter 700, the flow meter 800 and the fan nozzle in sequence.

[0077] Sampling: It is recommended to take 200g of blended fertilizer sample from each batch (4 tons), and after every 25 batches (100 tons) of samples are mixed, 1000g is sampled by quartering method for microbial activity test of blended fertilizer products to achieve quality control.

[0078] The specific embodiment of the second aspect of the utility model provides a production system for producing microorganism-containing formula fertilizer. The production system for producing microorganism-containing formula fertilizer includes a solid fertilizer production device and a mixing device for producing microorganism-containing formula fertilizer of any of the above embodiments; the discharge port produced by the solid fertilizer production device is connected to the mixing bin of the mixing device for producing microorganism-containing formula fertilizer, so as to discharge the produced solid fertilizer into the mixing bin.

[0079] Because the production system for producing microorganism-containing formula fertilizer of this embodiment includes the blending device for producing microorganism-containing formula fertilizer of any of the above embodiments, it has at least the above advantages.

[0080] In some embodiments, the solid fertilizer production apparatus comprises a chemical fertilizer production apparatus.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A mixing device for producing a microbial fertilizer, characterized in that: include: A storage tank (100) is used to store liquid fertilizer, wherein the liquid fertilizer contains a microbial agent; A stirring tank (300) is formed with a stirring chamber inside, and the stirring chamber is used to store solid fertilizer; A spraying component (200) is arranged in the mixing bin, the spraying component (200) is connected to the storage tank (100), and the spraying component (200) comprises a nozzle (220), the nozzle (220) is oriented toward a feeding path of the solid fertilizer, and is used for spraying the liquid fertilizer onto the solid fertilizer in the feeding process.

2. The mixing device for producing microbial fertilizer according to claim 1, characterized in that: The nozzle (220) is a fan-shaped nozzle.

3. The mixing device for producing microbial formula fertilizer according to claim 2, characterized in that: Also includes: A first stirring component (400), the first stirring component (400) is installed on the stirring tank (300), and is used to stir the solid fertilizer in the stirring bin and to lift the solid fertilizer at the bottom of the stirring bin.

4. The mixing device for producing microbial fertilizer according to claim 3, characterized in that: Also includes: A second stirring component (500), the second stirring component (500) is installed on the storage tank (100) and is used to stir the liquid fertilizer.

5. The mixing device for producing microbial fertilizer according to claim 4, characterized in that: The second stirring member (500) comprises a second stirring paddle (520), and the second stirring paddle (520) comprises: A second stirring shaft (521), one end of the second stirring shaft (521) is connected to a second driving assembly (510), and the second driving assembly (510) is installed outside the storage tank (100); A second stirring rod (522), the middle portion of the second stirring rod (522) is connected to the other end of the second stirring shaft (521), the second stirring rod (522) is an arc-shaped structure, and the middle portion of the second stirring rod (522) protrudes toward the bottom of the storage tank (100).

6. The mixing device for producing microbial fertilizer according to claim 1, characterized in that: Also includes: A heat-insulating sleeve (900), wherein the heat-insulating sleeve (900) is sleeved on the outside of the material storage tank (100) and is used to keep the material storage tank (100) warm.

7. The mixing device for producing a microbial fertilizer according to any one of claims 1 to 6, characterized in that: A delivery pipeline is arranged between the discharge port of the storage tank (100) and the feed port of the spraying component (200); and further comprising: A flow pump (600) is arranged in the delivery pipeline and is used to pump the liquid fertilizer in the storage tank (100) to the spraying component (200).

8. The mixing device for producing microbial formula fertilizer according to claim 7, characterized in that: Also includes: A filter (700), wherein the filter (700) is disposed in the delivery pipeline and is located downstream of the flow pump (600).

9. The mixing device for producing microbial formula fertilizer according to claim 8, characterized in that: Also includes: A flow meter (800) is arranged at the feed inlet of the spraying component (200), or is arranged in the delivery pipeline and is located downstream of the filter (700); A control module is electrically connected to the storage tank (100), the flow pump (600) and the flow meter (800).

10. A production system for producing a microbial fertilizer, characterized in that: It comprises a solid fertilizer production device and a mixing device for producing a microorganism-containing formula fertilizer as described in any one of claims 1 to 9; the discharge port of the solid fertilizer production device is connected to the stirring bin of the mixing device for producing a microorganism-containing formula fertilizer.

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