Mixer and method for producing microbial agent compound fertilizer

Abstract

The invention discloses a mixer and method for microbial agent compound fertilizer production, and relates to the technical field of mixers.The mixer comprises a mixer body, a volume adjusting mechanism is arranged on the side end face of the mixer body, the mixer body comprises a mixing drum, a supporting frame, a gear motor and a driving shaft, and the gear motor and the mixing drum are installed on the supporting frame; the driving shaft is fixedly installed on an output shaft of the gear motor, the driving shaft penetrates through the mixing drum and is rotationally connected with the mixing drum, and the volume adjusting mechanism comprises an outer threaded pipe, an inner threaded sleeve, an inner stirrer and an outer stirrer, is installed on the side end face of the mixing drum and is used for adjusting the volume of the mixing drum. The stirring device has the advantages of dynamic adjustment of the volume of the stirring barrel, double-layer reverse spiral flexible stirring blades and efficient heat preservation, and solves the problems that traditional equipment is uneven in distribution when treating a small amount of raw materials, and a single-layer stirring system has a mixing dead angle.

Description

Technical Field

[0001] The present invention relates to the technical field of mixers, and specifically to a mixer and method for producing microbial inoculant compound fertilizers. Background Art

[0002] Microbial inoculant compound fertilizers are widely welcomed because they can improve soil structure, increase crop yield and quality, and are environmentally friendly at the same time. However, in the production process, how to effectively mix various basic fertilizers and microbial inoculants to ensure uniform distribution has become a key technical challenge.

[0003] Traditional mixing equipment usually has the following deficiencies. The volume of the mixing drum of traditional mixers is fixed. When dealing with a small amount of raw materials, it will cause uneven distribution of the materials in the mixing drum, affecting the mixing effect. Many existing devices use a single-layer mixing system, which is prone to mixing dead corners, especially in the edge area of the mixing drum. It is difficult to achieve sufficient turning and mixing of the materials, resulting in unstable product quality. Therefore, a mixer and method for producing microbial inoculant compound fertilizers are needed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a mixer and method for producing microbial inoculant compound fertilizers, which have the advantages of dynamically adjusting the volume of the mixing drum, double-layer reverse spiral flexible mixing blades, and high-efficiency heat preservation, and solve the problems of uneven distribution when dealing with a small amount of raw materials by traditional equipment and the existence of mixing dead corners in the single-layer mixing system.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A mixer for producing microbial inoculant compound fertilizers, including a mixer main body, and a volume adjustment mechanism is arranged on the side end face of the mixer main body;

[0006] The mixer main body includes a mixing drum, a support frame, a reduction motor, and a drive shaft. The reduction motor and the mixing drum are installed on the support frame. The drive shaft is fixedly installed on the output shaft of the reduction motor, and the drive shaft passes through the mixing drum and is rotatably connected thereto;

[0007] The volume adjustment mechanism includes an external thread tube, an internal thread sleeve, an internal stirrer, and an external stirrer. The volume adjustment mechanism is installed on the side end face of the mixing drum to adjust the volume of the mixing drum.

[0008] Preferably, for the mixer used in the production of the microbial inoculant compound fertilizer of the present invention, a fixed turntable is provided on the side end face of the drive shaft. The inner stirrer includes a first flexible stirring blade and a first adjusting turntable. The first flexible stirring blade is fixedly installed on the side end face of the first adjusting turntable, and the end of the first flexible stirring blade away from the first adjusting turntable is fixedly installed on the fixed turntable. The outer stirrer includes a second flexible stirring blade and a second adjusting turntable. The second flexible stirring blade is fixedly installed between the second adjusting turntable and the fixed turntable. The first adjusting turntable is installed on the drive shaft, and the second adjusting turntable is installed at the outer end of the first adjusting turntable.

[0009] Preferably, for the mixer used in the production of the microbial inoculant compound fertilizer of the present invention, a spiral guiding groove is provided on the side end face of the drive shaft. A second shaft hole slidably matched with the drive shaft is provided at the center of the side end face of the first adjusting turntable. A guiding slider matched with the spiral guiding groove is provided on the inner end face of the second shaft hole. The second adjusting turntable is installed on the first adjusting turntable and is rotatably connected thereto.

[0010] Preferably, for the mixer used in the production of the microbial inoculant compound fertilizer of the present invention, a through hole is provided on the side end face of the mixing cylinder. The inner threaded sleeve is fixedly installed in the through hole. The outer threaded pipe passes through the inner threaded sleeve and is threadedly connected thereto. A first shaft hole slidably matched with the drive shaft is provided at the center of the outer threaded pipe. A push plate rotatably connected is provided at the end of the outer threaded pipe close to the inner stirrer. The push plate is fixedly connected to the inner stirrer.

[0011] Preferably, for the mixer used in the production of the microbial inoculant compound fertilizer of the present invention, a steering wheel is provided at the end of the outer threaded pipe. A material shoveling flange that fits with the inner edge of the end face of the mixing cylinder is provided at the edge of the second adjusting turntable.

[0012] Preferably, for the mixer used in the production of the microbial inoculant compound fertilizer of the present invention, both the first flexible stirring blade and the second flexible stirring blade are spiral structures. The first flexible stirring blades are equally spaced in a circumferential array at the edge of the first adjusting turntable. The second flexible stirring blades are equally spaced in a circumferential array at the edge of the second adjusting turntable. The spiral directions of the first flexible stirring blade and the second flexible stirring blade are opposite.

[0013] Preferably, for the mixer used in the production of the microbial inoculant compound fertilizer of the present invention, the first flexible stirring blade and the second flexible stirring blade are composed of a reinforcing core and an anti-corrosion layer. The reinforcing core is made of PU material, and the anti-corrosion layer is made of silica gel material.

[0014] Preferably, for the mixer used in the production of the microbial inoculant compound fertilizer of the present invention, an annular sliding groove is provided at the edge of the first adjusting turntable. An annular rib matched with the annular sliding groove is provided on the inner end face of the second adjusting turntable. Steel balls are provided in the annular sliding groove.

[0015] Preferably, for the mixer used in the production of the microbial inoculant compound fertilizer of the present invention, a feeding port is provided on the upper end surface of the mixing cylinder, a discharging port is provided at the bottom of the mixing cylinder, a heat preservation jacket is provided on the side wall of the mixing cylinder, a water inlet and a water outlet communicating with the heat preservation jacket are provided on the mixing cylinder, and a spiral partition plate is provided in the heat preservation jacket.

[0016] A method for producing a microbial inoculant compound fertilizer includes the following steps:

[0017] Step 1, raw material preparation: Accurately weigh various basic fertilizers according to the formula, adjust the volume of the mixing cylinder according to the amount of raw materials, and put the raw materials into the mixing cylinder;

[0018] Step 2, raw material mixing: Drive the drive shaft to rotate through a reduction motor to mix the raw materials;

[0019] Step 3, dehydration and drying: Heat the waste materials in the mixing cylinder, and discharge them after the humidity of the waste materials is appropriate;

[0020] Step 4, quality inspection: Sample and inspect the produced fertilizer.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The present invention realizes the dynamic adjustment of the effective volume of the mixing cylinder through the volume adjustment mechanism composed of an external thread tube, an internal thread sleeve and a push plate. When the amount of raw materials is small, rotate the external thread tube to drive the push plate to slide towards the reduction motor end, reducing the effective working space of the mixing cylinder, avoiding the problem of insufficient mixing caused by too little material in traditional fixed-volume equipment. At the same time, the double-layer agitator on the drive shaft adopts a flexible agitator blade structure with reverse spirals. The inner agitator blade is matched with the drive shaft through a spiral guide groove. The two agitators rotate in opposite directions to form a material convection, and cooperate with the shoveling flange to clean the residual material on the cylinder wall, significantly improving the mixing coverage range and uniformity, and solving the problem of mixing dead corners existing in traditional single agitators.

[0023] 2. The first and second flexible agitator blades of the present invention adopt a composite structure of a spiral-shaped PU reinforcing core and a silica gel anti-corrosion layer. While ensuring elasticity and corrosion resistance, through the design of the turntable connection with the cooperation of an annular chute and steel balls, the inner and outer agitators maintain stable linkage during the volume adjustment process. When the outer agitator is restricted by the cylinder wall and cannot expand, its elastic deformation releases stress through the self-rotation of the second adjustment turntable, while the inner agitator realizes the self-adaptive adjustment of the pitch through the spiral guide groove. This design not only avoids the structural interference of the flexible agitator blade during compression or expansion, but also forms a three-dimensional support through multiple groups of circumferentially arranged agitator blades, significantly improving the operating stability of the mixing system under high-load working conditions, and solving the problems of easy jamming and frequent maintenance of traditional rigid agitators.

[0024] 3. The combined structure of the thermal insulation jacket and the spiral partition plate arranged on the side wall of the mixing drum of the present invention realizes uniform temperature control by forcibly guiding the spiral flow of the heat medium, ensuring that the microbial inoculant works within the optimal active temperature range. Cooperating with the closed adjustment space formed by the push plate and the shoveling flange, it effectively prevents cross-contamination caused by fertilizer residues, solves the common problems of inoculant inactivation and material contamination in the production process of microbial fertilizers, and cooperates with the high resilience characteristics of the PU material, significantly extending the service life of the equipment in a corrosive environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a top view of the present invention;

[0027] Figure 3 is the Figure 2 A-A sectional view of the present invention;

[0028] Figure 4 is a schematic diagram of the sectional structure of the present invention;

[0029] Figure 5 is a schematic diagram of the volume adjustment mechanism structure of the present invention;

[0030] Figure 6 is an exploded view of the volume adjustment mechanism of the present invention;

[0031] Figure 7 is the Figure 3 enlarged view at B of the present invention;

[0032] Figure 8 is a schematic diagram of the structure of the first adjustment turntable of the present invention;

[0033] Figure 9 is a schematic diagram of the structure of the drive shaft of the present invention;

[0034] Figure 10 is the Figure 3 enlarged view at C of the present invention;

[0035] Figure 11 is the Figure 3 enlarged view at D of the present invention.

[0036] In the figure: 1. Mixer main body; 101. Mixing drum; 1011. Feeding port; 1012. Drain port; 1013. Water inlet; 1014. Heat preservation jacket; 1015. Discharge port; 1016. Through hole; 1017. Spiral partition; 102. Support frame; 103. Drive shaft; 1031. Fixed turntable; 1032. Spiral guide groove; 104. Reduction motor; 2. Volume adjustment mechanism; 201. External threaded pipe; 2011. Steering wheel; 2012. Push plate; 2013. Fixed bolt; 2014. First shaft hole; 202. Internal threaded sleeve; 203. Internal stirrer; 2031. First flexible stirring blade; 2032. First adjustment turntable; 20321. Second shaft hole; 20322. Slide block; 20323. Annular chute; 204. External stirrer; 2041. Second flexible stirring blade; 20411. Reinforcing core; 20412. Anticorrosion layer; 2042. Second adjustment turntable; 20421. Shoveling flange; 20422. Annular rib; 20423. Steel ball. Detailed implementation manners

[0037] Example 1

[0038] Please refer to Figures 1-11 , a mixer for producing microbial inoculant compound fertilizer, comprising a mixer main body 1, and a volume adjustment mechanism 2 is arranged on the side end face of the mixer main body 1;

[0039] The mixer main body 1 comprises a mixing drum 101, a support frame 102, a reduction motor 104 and a drive shaft 103. The reduction motor 104 and the mixing drum 101 are installed on the support frame 102. The drive shaft 103 is fixedly installed on the output shaft of the reduction motor 104, and the drive shaft 103 passes through the mixing drum 101 and is rotatably connected thereto;

[0040] The volume adjustment mechanism 2 comprises an external threaded pipe 201, an internal threaded sleeve 202, an internal stirrer 203 and an external stirrer 204. The volume adjustment mechanism 2 is installed on the side end face of the mixing drum 101 for adjusting the volume of the mixing drum 101.

[0041] Furthermore, a fixed turntable 1031 is arranged on the side end face of the drive shaft 103. The internal stirrer 203 comprises a first flexible stirring blade 2031 and a first adjustment turntable 2032. The first flexible stirring blade 2031 is fixedly installed on the side end face of the first adjustment turntable 2032. The end of the first flexible stirring blade 2031 far from the first adjustment turntable 2032 is fixedly installed on the fixed turntable 1031. The external stirrer 204 comprises a second flexible stirring blade 2041 and a second adjustment turntable 2042. The second flexible stirring blade 2041 is fixedly installed between the second adjustment turntable 2042 and the fixed turntable 1031. The first adjustment turntable 2032 is installed on the drive shaft 103, and the second adjustment turntable 2042 is installed at the outer end of the first adjustment turntable 2032.

[0042] The reduction motor 104 drives the drive shaft 103 to rotate, so that the drive shaft 103 drives the inner stirrer 203 and the outer stirrer 204 to rotate, turning the compound fertilizer at the center and edge of the mixing drum 101. The double-stirrer structure improves the material turning effect and at the same time increases the coverage range.

[0043] Furthermore, a spiral guiding groove 1032 is provided on the side end face of the drive shaft 103. The center of the side end face of the first adjusting turntable 2032 is provided with a second shaft hole 20321 that is slidably matched with the drive shaft 103. A guiding slider 20322 that is matched with the spiral guiding groove 1032 is provided on the inner end face of the second shaft hole 20321. The second adjusting turntable 2042 is installed on the first adjusting turntable 2032 and is rotatably connected thereto.

[0044] When the first adjusting turntable 2032 slides along the axial direction of the drive shaft 103, the guiding slider 20322 will slide along the spiral guiding groove 1032, so that the first adjusting turntable 2032 rotates. When the pitch of the first flexible stirring blade 2031 is shortened, by increasing its number of spiral turns, it is avoided that the first flexible stirring blade 2031 expands outwards and interferes with the second flexible stirring blade 2041. And the second flexible stirring blade 2041 is restricted by the inner wall of the mixing drum 101 and cannot expand outwards. When it is compressed, it will drive the second adjusting disk to rotate around the first adjusting turntable 2032 under its own elastic action.

[0045] Furthermore, a through hole 1016 is provided on the side end face of the mixing drum 101. The internal thread sleeve 202 is fixedly installed in the through hole 1016. The external thread tube 201 passes through the internal thread sleeve 202 and is threadedly connected thereto. A first shaft hole 2014 that is slidably matched with the drive shaft 103 is provided at the center of the external thread tube 201. A push plate 2012 that is rotatably connected is provided at the end of the external thread tube 201 close to the inner stirrer 203. The push plate 2012 and the inner stirrer 203 are fixedly connected by a fixing bolt 2013.

[0046] Through the external thread tube 201, under the action of the screw rod movement, it drives the push plate 2012 to slide along the drive shaft 103. When there is too little raw material in the mixing drum 101 and the volume of the mixing drum 101 is too large, it is difficult to fully mix the raw materials, affecting the production quality. By pushing the first adjusting turntable 2032 and the second adjusting turntable 2042 towards the reduction motor 104 end, the effective volume of the mixing drum 101 is reduced, and the stirring effect of the first stirrer and the second stirrer on the fertilizer is improved.

[0047] Furthermore, a steering wheel 2011 is provided at the end of the external thread tube 201. A material shoveling flange 20421 that fits with the inner end face edge of the mixing drum 101 is provided at the edge of the second adjusting turntable 2042.

[0048] Increase the torque through the steering wheel 2011 to facilitate the rotation of the external thread pipe 201, thereby facilitating the adjustment of the effective volume of the mixing drum 101. A shoveling flange 20421 is provided at the edge of the second adjustment turntable 2042, so that when the second adjustment turntable 2042 slides, the fertilizer on the inner wall of the mixing drum 101 can be shoveled to prevent the fertilizer from entering the ineffective cavity formed by the push plate 2012 and the mixing drum 101.

[0049] Furthermore, both the first flexible stirring blade 2031 and the second flexible stirring blade 2041 are spiral structures. The first flexible stirring blade 2031 is equidistantly arranged in a circumferential array at the edge of the first adjustment turntable 2032, and the second flexible stirring blade 2041 is equidistantly arranged in a circumferential array at the edge of the second adjustment turntable 2042. The spiral directions of the first flexible stirring blade 2031 and the second flexible stirring blade 2041 are opposite.

[0050] The structure of the first flexible stirring blade 2031 and the second flexible stirring blade 2041 with reverse spirals enables the drive shaft 103 to drive the inner stirrer 203 and the outer stirrer 204 to rotate, generating a material circulation flow at the center and edge of the mixing drum 101, improving the mixing effect. The multiple groups of stirring blades support each other, enhancing the stability of the stirrer.

[0051] Furthermore, the first flexible stirring blade 2031 and the second flexible stirring blade 2041 are composed of a reinforcing core 20411 and an anti-corrosion layer 20412. The reinforcing core 20411 is made of PU material, and the anti-corrosion layer 20412 is made of silicone material.

[0052] The polyurethane elastomer has a high resilience rate, can withstand repeated deformation, has a high tensile strength, is suitable for high-load stirring, and is resistant to particle impact. The silicone material has good corrosion resistance, high temperature resistance, and good aging resistance. It is not prone to cracking after long-term use, protects the activity of the fungicide, and avoids the growth inhibition of microorganisms by the material precipitates.

[0053] Furthermore, an annular sliding groove 20323 is provided at the edge of the first adjustment turntable 2032, an annular rib 20422 that cooperates with the annular sliding groove 20323 is provided on the inner end surface of the second adjustment turntable 2042, and steel balls 20423 are provided in the annular sliding groove 20323.

[0054] Through the cooperation of the annular sliding groove 20323 and the annular rib 20422, the fitting degree and stability of the first adjustment turntable 2032 and the second adjustment turntable 2042 are improved, preventing the two from being misaligned during the operation of the equipment. By providing steel balls 20423 in the annular sliding groove 20323, the friction between the first adjustment turntable 2032 and the second adjustment turntable 2042 is reduced, enhancing the service life of the equipment.

[0055] Further, a feeding port 1011 is provided on the upper end surface of the mixing drum 101, a discharging port 1015 is provided at the bottom of the mixing drum 101, a thermal insulation jacket 1014 is provided on the side wall of the mixing drum 101, a water inlet 1013 and a water outlet 1012 communicating with the thermal insulation jacket 1014 are provided on the mixing drum 101, and a spiral partition plate 1017 is provided in the thermal insulation jacket 1014.

[0056] The activity of the biological inoculant is enhanced through the thermal insulation jacket 1014, thereby enhancing the product yield and keeping the microorganisms highly active all the time. A spiral partition plate 1017 is provided in the thermal insulation jacket 1014 to forcibly restrict the flow of the hot water for heat exchange in the mixing drum 101, enhancing the heating uniformity, increasing the heat exchange area and improving the heat exchange rate at the same time.

[0057] When this device is in use, an appropriate amount of hot water is injected into the thermal insulation jacket 1014 through the water inlet 1013, and the water level is adjusted by the drain port 1012 to enable the normal operation of the thermal insulation jacket 1014 and maintain the appropriate temperature inside the mixing drum 101 to enhance the activity of the microbial inoculant. When there is too little raw material in the mixing drum 101 and the volume of the mixing drum 101 is too large, it is necessary to reduce the effective volume of the mixing drum 101. Rotate the steering wheel 2011 at the end of the external thread tube 201. Since the external thread tube 201 is threadedly connected to the internal thread sleeve 202 fixedly installed in the through hole 1016 on the side end face of the mixing drum 101, rotating the steering wheel 2011 will cause the external thread tube 201 to move along the internal thread sleeve 202. A first shaft hole 2014 that is slidably matched with the drive shaft 103 is provided at the center of the external thread tube 201. A push plate 2012 that is rotatably connected is provided at the end of the external thread tube 201 close to the internal stirrer 203, and the push plate 2012 is fixedly connected to the internal stirrer 203. Therefore, when the external thread tube 201 moves, it will drive the push plate 2012 to slide along the drive shaft 103, and then push the first adjustment turntable 2032 and the second adjustment turntable 2042 towards the reduction motor 104 end to reduce the effective volume of the mixing drum 101. The microbial inoculant and compound fertilizer raw materials are put into the mixing drum 101 through the feeding port 1011 on the upper end face of the mixing drum 101. The reduction motor 104 is started, and the reduction motor 104 drives the drive shaft 103 to rotate. A fixed turntable 1031 is provided on the side end face of the drive shaft 103. The first flexible stirring blades 2031 of the internal stirrer 203 are fixedly installed between the first adjustment turntable 2032 and the fixed turntable 1031, and the second flexible stirring blades 2041 of the external stirrer 204 are fixedly installed between the second adjustment turntable 2042 and the fixed turntable 1031. Therefore, when the drive shaft 103 rotates, the internal stirrer 203 and the external stirrer 204 will rotate synchronously. Since both the first flexible stirring blades 2031 and the second flexible stirring blades 2041 are spiral structures and the spiral directions are opposite, a material circulation flow will be generated at the center and edge of the mixing drum 101 during rotation, turning the compound fertilizer at the center and edge of the mixing drum 101 to improve the mixing effect. When the first adjustment turntable 2032 slides along the axial direction of the drive shaft 103 during the process of adjusting the volume of the mixing drum 101, the guiding slider 20322 in the second shaft hole 20321 provided at the center of the side end face of the first adjustment turntable 2032 and slidably matched with the drive shaft 103 will slide along the spiral guiding groove 1032 provided on the side end face of the drive shaft 103, so that the first adjustment turntable 2032 rotates, changing the pitch of the first flexible stirring blades 2031. When the pitch of the first flexible stirring blades 2031 is shortened, by increasing the number of its spiral turns, it is avoided that the first flexible stirring blades 2031 expand outwards and interfere with the second flexible stirring blades 2041. During the adjustment process, the shoveling flange 20421 provided at the edge of the adjustment turntable will shovel the fertilizer on the inner wall of the mixing drum 101 to prevent the fertilizer from entering the ineffective cavity formed by the push plate 2012 and the mixing drum 101. After the mixing is completed, open the discharge port 1015 at the bottom of the mixing drum 101.Discharge the mixed microbial inoculant compound fertilizer.,

[0058] Example 2

[0059] Please refer to Figures 1-11 , a production method of microbial inoculant compound fertilizer, comprising the following steps:

[0060] Step 1, raw material preparation: clarify the types and precise proportions of various basic fertilizers such as nitrogen fertilizer, phosphate fertilizer, potassium fertilizer and microbial inoculant, and accurately weigh them in sequence according to the formula using a high-precision electronic scale. For fertilizers such as urea that are prone to moisture absorption and oxidation, they need to be quickly weighed and sealed in a dry and sealed environment. According to the total volume of the raw materials, if the amount is small and the volume of the mixing drum 101 is relatively large, rotate the steering wheel 2011 at the end of the external threaded pipe 201. By the threaded connection between the external threaded pipe 201 and the internal threaded sleeve 202, drive the push plate 2012 to slide along the drive shaft 103, and push the first and second adjustment turntables 2042 towards the reduction motor 104 end to reduce the effective volume of the mixing drum 101. Open the feeding port 1011 at the upper end of the mixing drum 101, first put in granular or high-density phosphate fertilizer, then slowly add the microbial inoculant to prevent flying and inactivation, and finally add the remaining fertilizers to avoid material accumulation. After feeding, seal the feeding port 1011;

[0061] Step 2, raw material mixing: Before starting the reduction motor 104, check the connection stability of each component of the mixing drum 101, and focus on checking the connection between the internal and external agitators 204 and the drive shaft 103 and the fixed turntable 1031. Start the reduction motor 104, the drive shaft 103 drives the fixed turntable 1031 to rotate, and then the internal and external agitators 204 rotate synchronously. The first and second flexible stirring blades 2041 with spiral shapes and opposite spiral directions form a material circulation flow at the center and edge of the mixing drum 101, continuously turning over the raw materials to promote mixing. During this period, the mixing state can be viewed through the observation window. If there is local unevenness, the mixing time can be appropriately extended;

[0062] Step 3: After checking that the water inlet 1013, drain outlet 1012 and connecting pipes of the heat preservation jacket 1014 on the side wall of the mixing drum 101 are intact and there is no water leakage, pass warm and hot water through the water inlet 1013, and adjust the water flow rate through the drain outlet 1012 to ensure that the water temperature reaches the set 40 - 55 °C. Use the spiral partition 1017 in the heat preservation jacket 1014 to enhance the heat exchange effect. As the heating progresses, the temperature of the fertilizer in the mixing drum 101 rises and the moisture evaporates, and the microbial inoculant will not be inactivated due to excessive temperature. The internal and external agitators 204 continuously stir to promote uniform heating, continue to stir to make the moisture evenly distributed, and finally open the discharge port 1015 at the bottom of the mixing drum 101 to discharge the material;

[0063] Step 4, quality inspection: Randomly sample from the discharged fertilizer using a stainless steel sampling shovel, collect appropriate samples at different time periods at the discharge port and at different positions such as the upper, middle and lower parts of the fertilizer pile, put them into clean sealed bags and mark information such as the sampling time and batch.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A mixer for producing microbial agent compound fertilizer, comprising a mixer body (1), characterized in that: A volume adjustment mechanism (2) is provided on the side end surface of the mixer body (1); The mixer body (1) comprises a mixing drum (101), a support frame (102), a reduction motor (104) and a drive shaft (103); the reduction motor (104) and the mixing drum (101) are mounted on the support frame (102); the drive shaft (103) is fixedly mounted on the output shaft of the reduction motor (104); and the drive shaft (103) passes through the mixing drum (101) and is rotatably connected thereto; The volume adjustment mechanism (2) comprises an externally threaded tube (201), an internally threaded sleeve (202), an internal agitator (203) and an external agitator (204); the volume adjustment mechanism (2) is installed on the side end surface of the mixing drum (101) and is used to adjust the volume of the mixing drum (101).

2. A mixer for producing microbial agent compound fertilizer according to claim 1, characterized in that: The side end surface of the driving shaft (103) is provided with a fixed turntable (1031); the inner agitator (203) comprises a first flexible stirring blade (2031) and a first adjusting turntable (2032); the first flexible stirring blade (2031) is fixedly mounted on the side end surface of the first adjusting turntable (2032); the end of the first flexible stirring blade (2031) away from the first adjusting turntable (2032) is fixedly mounted on the fixed turntable (1031); the outer agitator (204) comprises a second flexible stirring blade (2041) and a second adjusting turntable (2042); the second flexible stirring blade (2041) is fixedly mounted between the second adjusting turntable (2042) and the fixed turntable (1031); the first adjusting turntable (2032) is mounted on the driving shaft (103); and the second adjusting turntable (2042) is mounted on the outer end of the first adjusting turntable (2032).

3. A mixer for producing microbial agent compound fertilizer as claimed in claim 2, characterized in that: The side end surface of the driving shaft (103) is provided with a spiral guide groove (1032); the center of the side end surface of the first adjusting dial (2032) is provided with a second shaft hole (20321) that slidably cooperates with the driving shaft (103); the inner end surface of the second shaft hole (20321) is provided with a guide slider (20322) that cooperates with the spiral guide groove (1032); and the second adjusting dial (2042) is mounted on the first adjusting dial (2032) and is rotatably connected thereto.

4. A mixer for producing microbial agent compound fertilizer according to claim 1, characterized in that: The side end surface of the mixing drum (101) is provided with a through hole (1016), the internal threaded sleeve (202) is fixedly installed in the through hole (1016), the external threaded tube (201) passes through the internal threaded sleeve (202) and is threadedly connected thereto, the center of the external threaded tube (201) is provided with a first axial hole (2014) that is slidably matched with the drive shaft (103), and the end of the external threaded tube (201) close to the internal agitator (203) is provided with a push plate (2012) that is rotatably connected, and the push plate (2012) is fixedly connected to the internal agitator (203).

5. A mixer for producing microbial agent compound fertilizer according to claim 2, characterized in that: A steering wheel (2011) is provided at the end of the externally threaded tube (201), and a shoveling flange (20421) that fits with the inner end edge of the mixing drum (101) is provided at the edge of the second adjusting dial (2042).

6. A mixer for producing microbial agent compound fertilizer according to claim 5, characterized in that: The first flexible stirring blade (2031) and the second flexible stirring blade (2041) are both spiral structures. The first flexible stirring blade (2031) is arranged in an equidistant circular array on the edge of the first adjustment dial (2032), and the second flexible stirring blade (2041) is arranged in an equidistant circular array on the edge of the second adjustment dial (2042). The spiral directions of the first flexible stirring blade (2031) and the second flexible stirring blade (2041) are opposite.

7. A mixer for producing microbial agent compound fertilizer according to claim 6, characterized in that: The first flexible stirring blade (2031) and the second flexible stirring blade (2041) are composed of a reinforcing core (20411) and an anti-corrosion layer (20412), wherein the reinforcing core (20411) is made of PU material, and the anti-corrosion layer (20412) is made of silicone material.

8. A mixer for producing microbial agent compound fertilizer according to claim 7, characterized in that: The edge of the first adjusting dial (2032) is provided with an annular sliding groove (20323), the inner end surface of the second adjusting dial (2042) is provided with an annular convex strip (20422) matching with the annular sliding groove (20323), and a steel ball (20423) is provided in the annular sliding groove (20323).

9. The mixer for producing microbial agent compound fertilizer according to claim 1, characterized in that: The upper end surface of the mixing drum (101) is provided with a feeding port (1011), the bottom of the mixing drum (101) is provided with a discharging port (1015), the side wall of the mixing drum (101) is provided with a heat-insulating jacket (1014), the mixing drum (101) is provided with a water inlet (1013) and a water outlet (1012) which are connected to the heat-insulating jacket (1014), and a spiral partition (1017) is provided in the heat-insulating jacket (1014).

10. A method for producing microbial agent compound fertilizer, applicable to a mixer for producing microbial agent compound fertilizer according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Raw material preparation: accurately weigh various basic fertilizers according to the formula, adjust the volume of the mixing drum (101) according to the amount of raw materials, and put the raw materials into the mixing drum (101); Step 2: Mixing the raw materials: the drive shaft (103) is driven to rotate by the reduction motor (104) to mix the raw materials; Step 3, dehydration and drying, heating the waste in the mixing drum (101) and discharging the waste after the humidity reaches a moderate level; Step 4: Quality inspection: sample and inspect the produced fertilizers.

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