Wheat straw decomposition agent and preparation equipment thereof

Abstract

The invention belongs to the technical field of decomposition agents, and particularly relates to a wheat straw decomposition agent and preparation equipment thereof.The wheat straw decomposition agent is prepared from 15%-19% of complex microbial inoculants, 10%-15% of animal waste, 0.2%-0.8% of zeolite powder, 30%-40% of straw and 5%-9% of auxiliary materials; the preparation method of the wheat straw decomposition agent comprises the following steps: crushing the complex microbial inoculant, the animal waste, the zeolite powder and the straw, uniformly stirring, adding clear water to adjust the water content of the mixed material, fermenting by using a fermentation tank, adding auxiliary materials in the fermentation process, and filtering the fermented product to obtain the straw decomposition agent. The device can accelerate the decomposition speed of wheat straws and improve the decomposition effect of the straws, is especially suitable for low-temperature environments in northern areas, avoids influence on subsequent planting operation due to overlong decomposition time of the straws, and also can avoid excessive consumption of land oxygen during decomposition of the straws, so that emission of toxic gases such as carbon dioxide and hydrogen sulfide is reduced, and environmental pollution is reduced. Normal growth of crop root systems is guaranteed, soil structure can be improved, and crop yield is increased.

Description

Technical Field

[0001] This invention belongs to the technical field of straw decomposing agents, specifically relating to a wheat straw decomposing agent and its preparation equipment. Background Technology

[0002] Straw decomposing agents, also known as straw humicants, are biological fermentation agents primarily used to rapidly decompose organic waste such as straw, weeds, and livestock manure, converting them into fertilizers that crops can absorb and utilize. Rich in organic matter and various nutrients, straw decomposing agents play a vital role in improving soil fertility, soil structure, and increasing crop yields. They are widely used in commercial organic fertilizer production, crop straw return to the field, urban waste treatment, biogas digester inoculation, and forest fire prevention.

[0003] Studies have shown that returning straw to the field can increase soil organic matter and improve soil fertility; increase soil water retention and moisture retention capacity and enhance drought resistance; and it is also one of the most effective ways to solve the problem of straw burning. However, the main components of wheat straw are cellulose, hemicellulose, and lignin. These three main components form a lignocellulose structure, which has strong resistance to decomposition and is difficult for microorganisms to break down. This results in a very slow natural decomposition rate when straw is returned to the field, especially in Northeast China, where low temperatures further prolong the decomposition time, which is not conducive to subsequent planting operations and causes gaps in rows. At the same time, prolonged decomposition also increases soil oxygen consumption and releases toxic gases such as carbon dioxide and hydrogen sulfide, which inhibits crop root growth and may even cause plant death and wilting, seriously affecting grain yield.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a wheat straw decomposing agent and its preparation equipment.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a wheat straw decomposing agent and its preparation equipment, which can solve the problem of slow wheat straw decomposition speed.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution:

[0008] A wheat straw decomposing agent, by mass fraction, comprises: 15-19% compound microbial agent, 10-15% animal manure, 0.2-0.8% zeolite powder, 30-40% straw, and 5-9% auxiliary materials, wherein the compound microbial agent is a low-temperature resistant decomposing bacteria, and the auxiliary materials are one or a combination of glucose, yeast extract, and pH buffer solution;

[0009] The preparation method of the wheat straw decomposing agent includes the following steps:

[0010] The compound microbial agent, animal manure, zeolite powder and straw are crushed and mixed evenly. Water is added to adjust the moisture content of the mixture. Then, fermentation is carried out in a fermentation tank. Auxiliary materials are added during the fermentation process. After the fermentation material is filtered, straw decomposition agent is obtained.

[0011] The mixture has a moisture content of 45-68% and a fermentation time of 15-22 days.

[0012] In one or more embodiments of the present invention, the low-temperature resistant decomposing bacteria include 10-20% Pseudomonas, 20-30% Bacillus subtilis, 3-9% Lactobacillus plantarum, 12-16% Lactococcus, 7-11% Arthrobacter spheroidae, and 1-3% Rhodococcus.

[0013] A device for preparing a wheat straw decomposing agent includes the fermentation tank, wherein the fermentation tank includes a fermentation tank body, at least two multi-point sampling mechanisms and a sealed sampling mechanism;

[0014] The multi-point sampling mechanism is installed inside the fermenter body. The multi-point sampling mechanism includes an annular tube with several sampling ports passing through it. A connecting pipe is connected to the annular tube and communicates with the inside of the annular tube. A sampling tube is connected to one end of the connecting pipe outside the fermenter body. A pull-release mechanism is installed inside the sampling tube.

[0015] The sealed sampling mechanism is located on one side of the fermenter body and is connected to the sampling tube. The sealed sampling mechanism is used to collect the fermentation liquid inside the fermenter body.

[0016] In one or more embodiments of the present invention, the diameter of the sampling tube is larger than the diameter of the connecting tube, which facilitates the installation of the pull-release mechanism;

[0017] The pull-release mechanism includes a partition, which is fixedly connected to the inner wall of the sampling tube and is used to block the flow of fermentation broth.

[0018] The partition plate has several through holes. When the through holes are not covered by the baffle plate, the fermentation liquid in the fermentation tank body will enter the sealed sampling mechanism through the sampling tube and the through holes, so that the staff can sample the fermentation liquid in the fermentation tank body, which is convenient for testing the C / N ratio of the fermentation liquid and for adding auxiliary materials according to the test results, so as to ensure the preparation effect of the subsequent straw decomposition agent.

[0019] In one or more embodiments of the present invention, a sliding rod is slidably connected to the partition, and a baffle and a limiting plate are respectively connected to both ends of the sliding rod. The baffle covers the through hole and is located on the side of the partition close to the fermentation tank body. When the baffle covers the through hole, the fermentation liquid in the fermentation tank body will not flow. The limiting plate is used to install an elastic sleeve.

[0020] An elastic sleeve is provided between the partition and the limiting plate. The elastic sleeve is located on the outside of the slide rod. Under the action of the limiting plate and the elastic sleeve, the baffle will cover the through hole, so that the fermentation liquid will not flow in the sampling tube.

[0021] In one or more embodiments of the present invention, a pull rope is connected to the baffle, and a handle is connected to one end of the pull rope outside the sampling tube. A guide wheel is rotatably connected inside the sampling tube, and the pull rope passes around the guide wheel. When the operator pulls the handle, the pull rope pulls the baffle under the action of the guide wheel, causing the baffle to detach from the cover of the through hole. At this time, the fermentation liquid in the fermentation tank body enters the sealed sampling mechanism through the sampling tube and the through hole, so that the operator can sample and test the fermentation liquid to analyze the C / N ratio of the fermentation liquid. This facilitates the addition of auxiliary materials based on the test results, thereby ensuring the preparation effect of the straw decomposing agent.

[0022] In one or more embodiments of the present invention, at least two pairs of protective plates are connected to the inner wall of the fermenter body. Each pair of protective plates is symmetrical about the central axis of the fermenter body. The protective plates correspond to the annular tube and are used to block the rotation angle of the annular tube to prevent the annular tube from colliding with the inherent stirring shaft of the fermenter body. At the same time, when the annular tube swings back and forth in the fermenter body, it can drive some of the fermentation liquid in the fermenter body to hit the protective plates. The diffusion effect of the fermentation liquid is better under the action of the protective plates, so as to greatly improve the mixing effect of the fermentation liquid.

[0023] The protective plate is connected to a buffer pad to protect the annular tube and the protective plate.

[0024] In one or more embodiments of the present invention, the annular tube is rotatably connected to the inner wall of the fermenter body, and the connecting tube is rotatably connected to the fermenter body, so that the annular tube can rotate inside the fermenter body and the fermentation liquid can be mixed by using the rotating annular tube to avoid the presence of concentration differences in the fermentation liquid;

[0025] A reciprocating drive mechanism is installed on the outer wall of the fermenter body. The reciprocating drive mechanism includes an electric motor. The output end of the electric motor is connected to a first pulley. A second pulley is fixedly connected to the outer wall of the sampling tube. A belt is connected between the first pulley and the second pulley. A linkage belt is connected between a pair of second pulleys. When the electric motor runs, the electric motor causes the first pulley to rotate. The first pulley drives the sampling tube to rotate through the belt and the second pulley. The sampling tube drives the annular tube to rotate inside the fermenter body through the connecting pipe, so as to stir and mix the fermentation liquid inside the fermenter body.

[0026] The linkage belt enables multiple annular tubes inside the fermenter to rotate synchronously, ensuring the mixing effect of the annular tubes on the fermentation liquid.

[0027] In one or more embodiments of the present invention, the sealed sampling mechanism includes a sampling box, the sampling box having at least a pair of collection chambers, and a filter screen installed in the collection chamber. The filter screen is used to filter the fermentation liquid entering the collection chamber from the sampling tube, so as to prevent the fermentation liquid from containing solid substances.

[0028] The filter screen is provided with a flow guide platform on its lower side, which is used to guide the flow.

[0029] A sampling cup is provided on the lower side of the flow guide platform. The sampling cup is used to collect the fermentation liquid so that the staff can analyze and test the C / N ratio of the fermentation liquid and add auxiliary materials according to the test results to ensure the preparation effect of the subsequent straw decomposition agent.

[0030] In one or more embodiments of the present invention, a linkage cleaning mechanism is installed on the filter screen. When the fermentation liquid in the fermenter body flows in the sampling tube, the linkage cleaning mechanism can be triggered and used to clean the filter screen.

[0031] Compared with existing technologies, the wheat straw decomposing agent and its preparation equipment of the present invention can accelerate the decomposition speed of wheat straw and improve the decomposition effect of straw. It is especially suitable for the low-temperature environment in northern regions, avoiding excessive straw decomposition time that would affect subsequent planting operations. At the same time, it can also avoid excessive consumption of soil oxygen during straw decomposition, thereby reducing the emission of toxic gases such as carbon dioxide and hydrogen sulfide, ensuring normal growth of crop roots, improving soil structure, and increasing crop yield. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a graph showing the effect of different decomposing agents on the decomposition rate of wheat straw in one embodiment of the present invention;

[0034] Figure 2 This is a perspective view of a preparation device for a wheat straw decomposing agent according to an embodiment of the present invention;

[0035] Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle;

[0036] Figure 4 This is a frontal cross-sectional view of a device for preparing a wheat straw decomposing agent according to an embodiment of the present invention;

[0037] Figure 5 for Figure 4 Schematic diagram of the structure at point B;

[0038] Figure 6 for Figure 4 Schematic diagram of the structure at point C;

[0039] Figure 7 for Figure 4 Schematic diagram of the structure at point D;

[0040] Figure 8 This is a perspective view of a multi-point sampling mechanism in one embodiment of the present invention;

[0041] Figure 9 This is a top cross-sectional view of a multi-point sampling mechanism in one embodiment of the present invention;

[0042] Figure 10 for Figure 9 Schematic diagram of the structure at point E in the middle;

[0043] Figure 11 for Figure 9 Schematic diagram of the structure at point F;

[0044] Figure 12 This is a side view of a device for preparing a wheat straw decomposing agent according to an embodiment of the present invention.

[0045] Figure 13 for Figure 12 Schematic diagram of the structure at point G in the middle;

[0046] Figure 14 for Figure 12 Schematic diagram of the structure at point F.

[0047] Explanation of key figure labels:

[0048] 1-Fermentation tank body, 101-Protective plate, 102-Buffer pad, 2-Multi-point sampling mechanism, 201-Annular tube, 202-Sampling port, 203-Connecting pipe, 204-Sampling tube, 205-Pull-out mechanism, 2051-Baffle, 2052-Through hole, 2053-Slide rod, 2054-Baffle, 2055-Limiting plate, 2056-Elastic sleeve, 2057-Pull rope, 2058-Guide wheel, 206-Reciprocating drive mechanism, 2061-Motor, 2062-First pulley, 2063-Second pulley, 2064-Belt, 207-Connecting block, 207 1-Reinforcing rib, 2072-Inner tube, 2073-Air hole, 2074-Airbag, 2075-First switch valve, 2076-Second switch valve, 2077-Gas supply pipe, 2078-Hollow sleeve, 2079-Gas injection pipe, 3-Sealed sampling mechanism, 301-Sampling box, 302-Filter screen, 3021-First rotating shaft, 3022-Cleaning plate, 3023-Bristles, 3024-First helical gear, 3025-Fixing plate, 3026-Second rotating shaft, 3027-Second helical gear, 3028-Blade, 3029-Fixing component, 303-Guide table, 304-Sampling cup. Detailed Implementation

[0049] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0050] like Figure 1 As shown, a wheat straw decomposing agent in one embodiment of the present invention comprises: 15-19% compound microbial agent, 10-15% animal manure, 0.2-0.8% zeolite powder, 30-40% straw and 5-9% auxiliary materials.

[0051] The compound microbial agent is composed of low-temperature decomposing bacteria, specifically including 10-20% Pseudomonas, 20-30% Bacillus subtilis, 3-9% Lactobacillus plantarum, 12-16% Lactococcus, 7-11% Arthrobacter spheroidae, and 1-3% Rhodococcus.

[0052] Preferably, the bacterial count of Pseudomonas is ≥2.3 × 10⁻⁶. 10 CFU / g, Bacillus subtilis count ≥5×10⁻⁶ 10 cfu / g, Lactobacillus plantarum count ≥1.8×10 10 cfu / g, Lactococcus count ≥4.9×10 9cfu / g, bacterial count of *Arthrobacter* ≥1.7×10⁻⁶ 10 CFU / g and Rhodococcus count ≥7.2×10⁻⁶ 10 cfu / g.

[0053] In addition, the excipient is one or a combination of glucose, yeast extract, and pH buffer. When the C / N ratio of the fermentation broth is high, yeast extract is added as the excipient; when the C / N ratio of the fermentation broth is low, glucose is added as the excipient, so that the C / N ratio of the fermentation broth can be stabilized at 25:1.

[0054] Specifically, the preparation method of the wheat straw decomposing agent includes the following steps:

[0055] The compound microbial agent, animal manure, zeolite powder and straw are crushed and mixed evenly. Water is added to adjust the moisture content of the mixture to 45-68%. The mixture is then fermented in a fermentation tank for 15-22 days. During the fermentation process, auxiliary materials are added according to the C / N ratio. The fermented material is filtered to obtain the straw decomposing agent.

[0056] Example 1

[0057] One embodiment of the present invention provides a wheat straw decomposing agent (S1) comprising: 15% compound microbial agent, 10% animal manure, 0.2% zeolite powder, 30% straw, and 5% auxiliary materials.

[0058] The compound microbial agent includes 10% Pseudomonas, 20% Bacillus subtilis, 3% Lactobacillus plantarum, 12% Lactococcus, 7% Arthrobacter spheroidae, and 1% Rhodococcus.

[0059] In addition, the animal excrement is pig manure, and the straw is one or a combination of rice straw, sawdust, or mushroom residue.

[0060] Specifically, the excipient is glucose.

[0061] Example 2

[0062] A wheat straw decomposing agent (S2) in one embodiment of the present invention comprises: 17% compound microbial agent, 12% animal manure, 0.5% zeolite powder, 33% straw and 6% auxiliary materials.

[0063] The compound microbial agent includes 13% Pseudomonas, 22% Bacillus subtilis, 5% Lactobacillus plantarum, 14% Lactococcus, 9% Arthrobacter spheroidae, and 2% Rhodococcus.

[0064] In addition, the animal manure mentioned is pig manure, and the straw is rapeseed straw.

[0065] Specifically, the excipient is glucose.

[0066] Example 3

[0067] One embodiment of the present invention provides a wheat straw decomposing agent (S3) comprising: 19% compound microbial agent, 15% animal manure, 0.8% zeolite powder, 40% straw, and 9% auxiliary materials.

[0068] The compound microbial agent includes 20% Pseudomonas, 30% Bacillus subtilis, 9% Lactobacillus plantarum, 16% Lactococcus, 11% Arthrobacter spheroidae, and 3% Rhodococcus.

[0069] In addition, the animal manure is chicken manure, and the straw is one or a combination of peat, rice husks, cottonseed hulls and corn stalks.

[0070] Specifically, the excipient is glucose.

[0071] Application Example 1

[0072] The experiment was conducted at the Yakeshi Experimental Base in Hulunbuir, a region with a cold-temperate continental monsoon climate characterized by significant seasonal variations and extreme temperatures. Springs are dry and windy, summers are cool and short, autumns are characterized by rapid temperature drops, and winters are cold and long. The average annual temperature ranges from -0.1℃ to -4.0℃, with a frost-free period of only 70-95 days and a snow cover period of up to 199.8 days.

[0073] The experiment investigated the effects of adding different substances on the decomposition rate of wheat straw. Five treatments were set up: straw was returned to the field in full and decomposing agent No. 1 (S1 in Example 1), straw was returned to the field in full and decomposing agent No. 2 (S2 in Example 2), straw was returned to the field in full and decomposing agent No. 3 (S3 in Example 3), straw was returned to the field in full and the C / N ratio of straw was adjusted to 25 / 1 with pure urea (S4), and straw was returned to the field in full and no additives were added (CK) as the control.

[0074] like Figure 1 As shown, wheat straw under different treatments all exhibited a certain degree of decomposition over time, and there were significant differences among the treatments at different time points. On May 23 (30 days after burial), S1 had the highest decomposition rate at 11.65%, followed by S2 at 10.81%, which were 1.18% and 1.02% higher than the control (CK), respectively. On June 23 (60 days after burial), S2 had the highest decomposition rate at 29.92%, which was significantly higher than the control (CK) by 47.97%. The decomposition rate of S3 was 28.39%, which was 40.41% higher than the control (CK), but not statistically significant. On August 23 (120 days after burial), S2 had the highest decomposition rate at 57.73%, which was significantly and extremely significantly higher than the control (CK), increasing by 40.77%. The decomposition rate of S4 was 55.27%, which was extremely significantly different from the control (CK), increasing by 34.77% higher than the control (CK). In summary, it can be seen that adding the decomposing agent of this invention and adjusting the C / N ratio to 25 / 1 both have good decomposition effects on straw. Wheat straw shows a rapid decomposition in the early stage and a more stable decomposition in the later stage as the decomposition time progresses.

[0075] In summary, wheat straw with the added decomposing agent of this invention exhibits a higher decomposition rate than wheat straw without the added decomposing agent. On May 23 (30 days after burial), the wheat straw decomposition rate remained between 5.34% and 11.65%; by August 23 (120 days after burial), the decomposition rate of wheat straw with the added decomposing agent reached over 50%. The highest decomposition rates of wheat straw cellulose (72.61%), hemicellulose (65.31%), and lignin (57.4%) were observed on August 23 (120 days after burial). The maximum release rates of nitrogen, phosphorus, and potassium were 53.41%, 62.06%, and 75.35%, respectively, on August 23 (120 days after burial). Based on the analytical data, S2 shows the best decomposition effect among the decomposing agents.

[0076] like Figures 2 to 14 As shown, an embodiment of the present invention provides a preparation device for a wheat straw decomposing agent, which includes a fermentation tank, the fermentation tank including a fermentation tank body 1, at least two multi-point sampling mechanisms 2 and a sealed sampling mechanism 3.

[0077] The fermenter body 1 has at least two pairs of protective plates 101 connected to its inner wall. Each pair of protective plates 101 is symmetrical about the central axis of the fermenter body 1 and corresponds to the annular tube 201. The protective plates 101 are used to block the rotation angle of the annular tube 201, preventing the annular tube 201 from colliding with the inherent stirring shaft of the fermenter body 1. At the same time, when the annular tube 201 oscillates back and forth inside the fermenter body 1, it can cause some of the fermentation liquid inside the fermenter body 1 to impact the protective plates 101. Under the action of the protective plates 101, the diffusion effect of the fermentation liquid is better, which greatly improves the mixing effect of the fermentation liquid and avoids the presence of concentration differences in the fermentation liquid inside the fermenter body 1, thus ensuring the fermentation effect.

[0078] In addition, a buffer pad 102 is connected to the protective plate 101 to protect the annular tube 201 and the protective plate 101.

[0079] like Figures 2 to 14 As shown, the multi-point sampling mechanism 2 is installed inside the fermenter body 1, and is positioned below the fermentation liquid level. The multi-point sampling mechanism 2 can simultaneously and repeatedly sample the fermentation liquid inside the fermenter body 1 at multiple points. Compared with single sampling mechanisms on the market, the multi-point sampling mechanism 2 in this invention has higher sampling efficiency, and multiple sampling allows for multiple tests, avoiding detection errors and achieving better results.

[0080] The multi-point sampling mechanism 2 includes an annular tube 201 with several sampling ports 202 extending through it. When the pull-release mechanism 205 is opened, the fermentation liquid in the fermenter body 1 can enter the annular tube 201 through the sampling ports 202 to achieve fermentation liquid sampling.

[0081] In addition, a connecting pipe 203 is connected to the annular tube 201, and the connecting pipe 203 is in communication with the inside of the annular tube 201. The fermentation broth inside the annular tube 201 can be discharged through the connecting pipe 203 to complete the sampling.

[0082] Preferably, the annular tube 201 is rotatably connected to the inner wall of the fermenter body 1, and the connecting tube 203 is rotatably connected to the fermenter body 1, so that the annular tube 201 can rotate inside the fermenter body 1, and the rotating annular tube 201 can be used to mix the fermentation liquid, thus avoiding the presence of concentration differences in the fermentation liquid.

[0083] Simultaneously, the rotation of the annular tube 201 can also be used to sample the fermentation broth at different liquid levels within the main body 1 of the fermenter, such as... Figure 13 As shown, this avoids staff taking samples multiple times and improves sampling efficiency.

[0084] Specifically, a sampling tube 204 is connected to one end of the connecting pipe 203 outside the fermenter body 1. The diameter of the sampling tube 204 is larger than that of the connecting pipe 203, which facilitates the installation of the pull-release mechanism 205.

[0085] Preferably, the sampling tube 204 is rotatably connected to the sampling box 301.

[0086] like Figures 2 to 14 As shown, a pull-release mechanism 205 is installed inside the sampling tube 204. The pull-release mechanism 205 is used to control the opening and closing of the sampling tube 204 so as to discharge the fermentation liquid inside the sampling tube 204, which facilitates the detection of the C / N ratio of the fermentation liquid.

[0087] The pull-release mechanism 205 includes a partition 2051, which is fixedly connected to the inner wall of the sampling tube 204. The partition 2051 is used to block the flow of fermentation liquid, and several through holes 2052 are provided on the partition 2051. When the through holes 2052 are not covered by the baffle 2054, the fermentation liquid in the fermentation tank body 1 will enter the sealed sampling mechanism 3 through the sampling tube 204 and the through holes 2052, so that the staff can sample the fermentation liquid in the fermentation tank body 1, which is convenient for testing the C / N ratio of the fermentation liquid. It is convenient to add auxiliary materials according to the test results. If the C / N ratio of the fermentation liquid is high, yeast extract is added as an auxiliary material. If the C / N ratio of the fermentation liquid is low, glucose is added as an auxiliary material, so that the C / N ratio of the fermentation liquid can be stabilized at 25:1, ensuring the preparation effect of the subsequent straw decomposition agent.

[0088] Additionally, a sliding rod 2053 is slidably connected to the partition 2051. A baffle 2054 and a limiting plate 2055 are respectively connected to both ends of the sliding rod 2053. The baffle 2054 covers the through hole 2052 and is located on the side of the partition 2051 closest to the fermenter body 1. When the baffle 2054 covers the through hole 2052, the fermentation liquid inside the fermenter body 1 will not flow. The limiting plate 2055 is used to install the elastic sleeve 2056.

[0089] Specifically, an elastic sleeve 2056 is provided between the partition 2051 and the limiting plate 2055. The elastic sleeve 2056 is located outside the slide rod 2053. Under the action of the limiting plate 2055 and the elastic sleeve 2056, the baffle 2054 will cover the through hole 2052, so that the fermentation liquid will not flow in the sampling tube 204.

[0090] In addition, a pull rope 2057 is connected to the baffle 2054. A handle is connected to one end of the pull rope 2057 outside the sampling tube 204. A guide wheel 2058 is rotatably connected inside the sampling tube 204. The pull rope 2057 passes around the guide wheel 2058.

[0091] When the staff pulls the handle, the pull rope 2057 pulls the baffle 2054 under the action of the guide wheel 2058, so that the baffle 2054 is removed from the cover of the through hole 2052. At this time, the fermentation liquid in the fermentation tank body 1 enters the sealed sampling mechanism 3 through the sampling tube 204 and the through hole 2052, so that the staff can sample and test the fermentation liquid to analyze the C / N ratio of the fermentation liquid. This allows for the addition of auxiliary materials based on the test results, thereby ensuring the preparation effect of the straw decomposing agent.

[0092] like Figures 2 to 14 As shown, a reciprocating drive mechanism 206 is installed on the outer wall of the fermenter body 1. The reciprocating drive mechanism 206 is used to drive the annular tube 201 to rotate inside the fermenter body 1 so that the annular tube 201 can sample the fermentation liquid at different liquid levels inside the fermenter body 1, ensuring the accuracy of subsequent test results. At the same time, when a concentration difference occurs in the fermentation liquid inside the fermenter body 1, the annular tube 201 can be made to swing back and forth inside the fermenter body 1 to stir the fermentation liquid.

[0093] The reciprocating drive mechanism 206 includes a motor 2061, with a first pulley 2062 connected to the output end of the motor 2061. A second pulley 2063 is fixedly connected to the outer wall of the sampling tube 204. A belt 2064 connects the first pulley 2062 and the second pulley 2063, and a linkage belt connects the pair of second pulleys 2063. When the motor 2061 is running, it causes the first pulley 2062 to rotate. The first pulley 2062 drives the sampling tube 204 to rotate via the belt 2064 and the second pulley 2063. The sampling tube 204 drives the annular tube 201 to rotate within the fermenter body 1 via the connecting pipe 203, thereby stirring and mixing the fermentation liquid within the fermenter body 1.

[0094] The linkage belt enables multiple annular pipes 201 inside the fermenter body 1 to rotate synchronously, ensuring the mixing effect of the annular pipes 201 on the fermentation liquid.

[0095] like Figures 2 to 14 As shown, a connecting block 207 is installed inside the annular tube 201, and several inner tubes 2072 are connected between the connecting block 207 and the inner wall of the annular tube 201. The connecting block 207 can divide the interior of the annular tube 201 into two cavities, so that when sampling the fermentation liquid in the fermenter body 1 at different liquid levels, it is convenient to discharge the sample.

[0096] The annular tube 201 is further provided with an inner tube 2072, which passes through the connecting block 207. The connecting block 207 divides the interior of the annular tube 201 into two cavities.

[0097] In addition, the inner tube 2072 is provided with several air holes 2073, and the outer side of the inner tube 2072 is covered with an air bladder 2074. The inner tube 2072 is connected to the inside of the air bladder 2074 through the air holes 2073.

[0098] Specifically, a first switching valve 2075 and a second switching valve 2076 are installed on the inner tube 2072, and the first switching valve 2075 and the second switching valve 2076 are respectively installed on both sides of the connecting block 207. The first switching valve 2075 and the second switching valve 2076 can control the on / off state of the two cavity inner tubes 2072 respectively.

[0099] like Figures 2 to 14 As shown, a gas delivery pipe 2077 is connected to the inner tube 2072. One end of the gas delivery pipe 2077 passes through the connecting pipe 203 and the sampling pipe 204. A hollow sleeve 2078 is rotatably connected to the outer wall of the sampling pipe 204. Several fixing rods are connected between the hollow sleeve 2078 and the outer wall of the fermenter body 1. One end of the gas delivery pipe 2077 is located inside the hollow sleeve 2078. The hollow sleeve 2078 does not affect the normal rotation of the sampling pipe 204, and can also deliver gas into the gas delivery pipe 2077.

[0100] The hollow sleeve 2078 is connected to an injection pipe 2079, which is equipped with a third switch valve. The injection pipe 2079 connects to an external gas source to inject gas into the inner tube 2072. Gas from the inner tube 2072 enters the air bladder 2074 through the air hole 2073, causing the air bladder 2074 to inflate. The inflated air bladder 2074 blocks the sampling port 202. At this point, the fermentation liquid in the fermenter body 1 cannot enter the annular tube 201 through the sampling port 202, meaning no sampling is performed. Simultaneously, using the inflated air bladder 2074 to block the sampling port 202 also prevents the fermentation liquid from entering the annular tube 201, resulting in better stirring.

[0101] The gas injection tube 2079 is connected to an external gas supply source, which delivers gas into the hollow sleeve 2078. The gas inside the hollow sleeve 2078 then enters the inner tube 2072 through the gas delivery tube 2077. The gas in the inner tube 2072 enters the air bladder 2074 through the air hole 2073, causing the air bladder 2074 to inflate. The inflated air bladder 2074 then blocks the sampling port 202. Figure 13 As shown in the diagram, the fermentation liquid in the main body 1 of the fermenter cannot enter the annular tube 201 through the sampling port 202, meaning that the annular tube 201 will not take samples. Simultaneously, sealing the sampling port 202 with the inflatable air bladder 2074 also prevents the fermentation liquid from entering the annular tube 201, allowing the annular tube 201 to have a better stirring effect during its reciprocating oscillation.

[0102] In addition, through the cooperation of the first switching valve 2075 and the second switching valve 2076, sampling of fermentation broth at different liquid levels within the fermenter body 1 can be achieved. Figure 13 This is the state of the air bladder 2074 being inflated. At this time, the fermentation liquid inside the main body 1 of the fermenter cannot be sampled. Figure 14 When the airbag 2074 is in the contracted state, the fermentation liquid in the main body 1 of the fermenter can enter the annular pipe 201 through the sampling port 202, then enter the sampling pipe 204 through the connecting pipe 203, and finally enter the sealed sampling mechanism 3 for sampling.

[0103] like Figures 2 to 14 As shown, the sealed sampling mechanism 3 is located on one side of the fermenter body 1 and is connected to the sampling tube 204. The sealed sampling mechanism 3 is used to collect the fermentation liquid inside the fermenter body 1 under relatively sealed conditions.

[0104] The sealed sampling mechanism 3 includes a sampling box 301, which has at least one pair of collection chambers. A filter screen 302 is installed in the collection chamber. The filter screen 302 is used to filter the fermentation liquid that enters the collection chamber from the sampling tube 204, so as to prevent the fermentation liquid from containing solid substances.

[0105] like Figures 2 to 14As shown, a linkage cleaning mechanism is installed on the filter screen 302. When the fermentation liquid in the fermentation tank body 1 flows in the sampling tube 204, the linkage cleaning mechanism can be triggered and used to clean the filter screen 302.

[0106] The linkage cleaning mechanism includes a first rotating shaft 3021, which is rotatably connected to the filter screen 302. A pair of cleaning plates 3022 are installed on the side wall of the first rotating shaft 3021, and bristles 3023 are installed on the cleaning plates 3022, corresponding to the filter screen 302. When the first rotating shaft 3021 rotates, it can drive the cleaning plates 3022 and the bristles 3023 to rotate. The rotating bristles 3023 can clean the filter screen 302, preventing the filter screen 302 from being blocked by solid substances in the fermentation liquid.

[0107] In addition, the end of the first rotating shaft 3021 away from the filter screen 302 is connected to the first helical gear 3024, the top wall of the collection chamber is installed with a fixing plate 3025, the fixing plate 3025 is rotatably connected with the second rotating shaft 3026, one end of the second rotating shaft 3026 is located inside the sampling tube 204, and a fixing member 3029 is rotatably connected between the second rotating shaft 3026 and the inner wall of the sampling tube 204.

[0108] Specifically, one end of the second rotating shaft 3026 is connected to a second helical gear 3027, which meshes with the first helical gear 3024. The other end of the second rotating shaft 3026 is connected to a blade 3028, which is located inside the sampling tube 204. When the fermentation broth flows within the sampling tube 204, the broth impacts the blade 3028, causing it to rotate the second rotating shaft 3026. The second helical gear 3027 on the second rotating shaft 3026 also rotates synchronously. Because the second helical gear 3027 meshes with the first helical gear 3024, it can drive the first rotating shaft 3021, the cleaning plate 3022, and the brush bristles 3023 to rotate. This allows the rotating brush bristles 3023 to clean the filter screen 302, preventing it from being blocked by solid matter in the fermentation broth and ensuring effective sampling.

[0109] Preferably, the first helical gear 3024 and the second helical gear 3027 are provided with protective covers to prevent the first helical gear 3024 and the second helical gear 3027 from being affected by solid substances in the fermentation liquid.

[0110] like Figures 2 to 14 As shown, a flow guide platform 303 is provided on the lower side of the filter screen 302, which is used to guide the flow.

[0111] The guide platform 303 is equipped with a sampling cup 304 on its lower side. The sampling cup 304 is used to collect the fermentation liquid so that the staff can analyze and test the C / N ratio of the fermentation liquid and add auxiliary materials according to the test results, or control the operation of the reciprocating drive mechanism 206 to ensure the preparation effect of the subsequent straw decomposition agent.

[0112] In addition, the side wall of the sampling box 301 is equipped with multiple opening and closing doors. By opening the opening and closing doors, the sampling cup 304 can be taken out so that the C / N ratio of the fermentation broth sampled in the sampling cup 304 can be detected.

[0113] In practical use, when it is necessary to sample the fermentation liquid inside the main body 1 of the fermenter, first place the waste liquid collection cup into the collection chamber inside the sampling box 301. Then connect the gas injection pipe 2079 to an external gas supply source, open the first switch valve 2075 and the second switch valve 2076, and the gas supply source delivers gas to the inner tube 2072 through the hollow sleeve 2078 and the gas delivery pipe 2077. The gas in the inner tube 2072 enters the air bladder 2074 through multiple air holes 2073, causing the air bladder 2074 to inflate until the inflated air bladder 2074 blocks the sampling port 202. Then close the first switch valve 2075 and the second switch valve 2076. Figure 13 As shown in the diagram, the inflated air bladder 2074 can empty the fermentation liquid inside the annular tube 201.

[0114] Pull the handle, which pulls the pull rope 2057. The pull rope 2057, under the action of the guide wheel 2058, pulls the baffle 2054, causing the baffle 2054 to detach from the cover of the through hole 2052. At this time, the liquid remaining in the sampling tube 204 enters the sealed sampling mechanism 3 through the through hole 2052 and falls into the waste liquid collection cup through the filter screen 302. After the liquid in the sampling tube 204 is discharged, release the handle. The baffle 2054, under the action of the limiting plate 2055 and the elastic sleeve 2056, will cover the through hole 2052, preventing the fermentation liquid from flowing in the sampling tube 204 and avoiding sampling interference. Remove the waste liquid collection cup and reposition the sampling cup 304.

[0115] If the operator needs to sample different liquid levels within the fermenter body 1, the motor 2061 can be controlled to operate. The motor 2061 causes the first pulley 2062 to rotate. The first pulley 2062, via belt 2064 and second pulley 2063, drives the sampling tube 204 to rotate. The sampling tube 204, via connecting pipe 203, drives the annular tube 201 to rotate within the fermenter body 1. Through the action of the linkage belts, multiple annular tubes 201 within the fermenter body 1 can rotate synchronously. Figure 13 The state shown.

[0116] exist Figure 13In the indicated state, the operator needs to open the first switch valve 2075 and the second switch valve 2076 sequentially. First, opening the first switch valve 2075 allows gas in the air bladder 2074 on the corresponding side of the first switch valve 2075 to be discharged through the air hole 2073, reinforcing rib 2071, gas supply pipe 2077, hollow sleeve 2078, and gas injection pipe 2079. At this time, the sampling port 202 is not blocked, and the fermentation liquid in the fermenter body 1 enters the annular pipe 201 through the sampling port 202, and then enters the sampling tube 204. Pulling the handle allows the fermentation liquid in the sampling tube 204 to enter the sampling cup 304 through the through hole 2052 and filter screen 302. Simultaneously pulling the handle injects air into the air bladder 2074, causing the air bladder 2074 to re-seal the sampling port 202, preventing the fermentation liquid in the fermenter body 1 from continuing to enter the annular pipe 201. Once the fermentation broth in sampling tube 204 has been completely drained, release the handle to complete the sampling at the corresponding liquid level. The sampling operation for other liquid levels is the same. By repeating this process, multiple liquid levels within the main body of the fermenter 1 can be sampled simultaneously, greatly improving sampling efficiency. At the same time, multi-level sampling can also significantly reduce detection errors.

[0117] If different detection results are found for multiple liquid levels during the detection, it indicates that there is a concentration difference in the fermentation liquid in the fermentation tank body 1. In this case, it is necessary to continuously control the operation of the motor 2061. The motor 2061 causes the annular tube 201 to swing back and forth in the fermentation tank body 1. The reciprocating annular tube 201 is used to stir the fermentation liquid in the fermentation tank body 1 to reduce the concentration difference of the fermentation liquid.

[0118] If the test results for multiple liquid levels are found to be the same, it indicates that there is no concentration difference in the fermentation broth within the main body of fermenter 1, and therefore stirring is not required. Simultaneously, add the corresponding auxiliary materials according to the test results. For example, if the C / N ratio of the fermentation broth is greater than 25:1, yeast extract is added; if the C / N ratio is less than 25:1, glucose is added, ensuring that the C / N ratio of the fermentation broth remains stable at 25:1.

[0119] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0120] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wheat straw decomposing agent, characterized in that, The product comprises, by mass fraction: 15-19% compound microbial agent, 10-15% animal manure, 0.2-0.8% zeolite powder, 30-40% straw, and 5-9% auxiliary materials. The compound microbial agent is a low-temperature resistant decomposing bacteria, and the auxiliary materials are one or a combination of glucose, yeast extract, and pH buffer solution. The preparation method of the wheat straw decomposing agent includes the following steps: The compound microbial agent, animal manure, zeolite powder and straw are crushed and mixed evenly. Water is added to adjust the moisture content of the mixture. Then, fermentation is carried out in a fermentation tank. Auxiliary materials are added during the fermentation process. After the fermentation material is filtered, straw decomposition agent is obtained. The mixture has a moisture content of 45-68% and a fermentation time of 15-22 days.

2. The wheat straw decomposing agent according to claim 1, characterized in that, The low-temperature resistant decomposing bacteria include 10-20% Pseudomonas, 20-30% Bacillus subtilis, 3-9% Lactobacillus plantarum, 12-16% Lactococcus, 7-11% Arthrobacter spheroidae, and 1-3% Rhodococcus.

3. A preparation device for a wheat straw decomposing agent, comprising the fermentation tank as described in claim 1, characterized in that, The fermenter includes: Fermentation tank body; At least two multi-point sampling mechanisms are installed inside the fermenter body. Each multi-point sampling mechanism includes an annular tube with several sampling ports passing through it. A connecting pipe is connected to the annular tube and communicates with the inside of the annular tube. A sampling tube is connected to one end of the connecting pipe outside the fermenter body. A pull-release mechanism is installed inside the sampling tube. A sealed sampling mechanism is located on one side of the fermenter body and is connected to the sampling tube. The sealed sampling mechanism is used to collect the fermentation liquid inside the fermenter body.

4. The equipment for preparing a wheat straw decomposing agent according to claim 3, characterized in that, The diameter of the sampling tube is larger than the diameter of the connecting tube. The pull-release mechanism includes a partition plate, which is fixedly connected to the inner wall of the sampling tube. Several through holes are provided on the partition plate.

5. The equipment for preparing a wheat straw decomposing agent according to claim 4, characterized in that, A sliding rod is slidably connected to the partition plate. A baffle and a limiting plate are respectively connected to both ends of the sliding rod. The baffle covers the through hole and is located on the side of the partition plate close to the main body of the fermentation tank. An elastic sleeve is provided between the partition plate and the limiting plate, and the elastic sleeve is located on the outside of the sliding rod.

6. The equipment for preparing a wheat straw decomposing agent according to claim 5, characterized in that, A pull rope is connected to the baffle, and a handle is connected to one end of the pull rope outside the sampling tube. A guide wheel is rotatably connected inside the sampling tube, and the pull rope passes around the guide wheel.

7. The equipment for preparing a wheat straw decomposing agent according to claim 3, characterized in that, The inner wall of the fermenter body is connected to at least two pairs of protective plates. Each pair of protective plates is symmetrical about the central axis of the fermenter body. The protective plates correspond to the annular tube and are connected to buffer pads.

8. The equipment for preparing a wheat straw decomposing agent according to claim 7, characterized in that, The annular tube is rotatably connected to the inner wall of the fermenter body, the connecting tube is rotatably connected to the fermenter body, and a reciprocating drive mechanism is installed on the outer wall of the fermenter body. The reciprocating drive mechanism includes an electric motor, the output end of which is connected to a first pulley, and a second pulley is fixedly connected to the outer wall of the sampling tube. A belt is connected between the first pulley and the second pulley, and a linkage belt is connected between a pair of second pulleys.

9. The equipment for preparing a wheat straw decomposing agent according to claim 3, characterized in that, The sealed sampling mechanism includes a sampling box, which has at least one pair of collection chambers. A filter screen is installed in each collection chamber, and a flow guide is provided below the filter screen. A sampling cup is provided below the flow guide.

10. The equipment for preparing a wheat straw decomposing agent according to claim 9, characterized in that, The filter screen is equipped with a linkage cleaning mechanism. When the fermentation liquid in the main body of the fermenter flows in the sampling tube, the linkage cleaning mechanism can be triggered and used to clean the filter screen.

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