Microbial solid state fermentation medium mixing device

Abstract

The utility model discloses a microbial solid state fermentation culture medium mixing device, multiple spiral conveying feeding structure and mixing device, multiple spiral conveying feeding structure convey material to the inner chamber of mixing device, and the bottom of mixing device is equipped with dust removal cooperation structure and distribution conveying device with its discharge end cooperation, adopt above -mentioned structure, dust control effect is remarkable, integrates raw material delivery, mixing, discharge dust removal, continuous transfer etc. multiple procedures, realizes the integration operation of batching process, and production efficiency is greatly promoted, and mixing auger is efficient mixing, and cooperation spiral conveying feeding structure continuously mixes in the feeding process, and the accuracy of raw material proportioning and mixing uniformity are ensured, whole structure design is reasonable, and the failure rate is low in the operation process, guarantees the continuity of production, and the effective control of dust avoids the pollution of fermentation raw materials in the batching stage, improves the health control level of fermentation process, and then improves the quality stability and the yield of final product.

Description

Technical Field

[0001] This utility model relates to the field of solid-state fermentation microbial preparation technology, and in particular to a mixing device for solid-state fermentation culture media. Background Technology

[0002] In the field of solid-state fermentation technology, the cultivation of microorganisms such as Paecilomyces lilacinus, Trichoderma harzianum, and Aspergillus oryzae typically uses organic raw materials such as corn, soybean meal, rice bran, rice husks, soybean flour, wheat bran, and corn flour as culture media. In existing processes, the raw materials need to be mixed in a specific ratio and then sterilized at high temperature, followed by the addition of inorganic salts, moisture, and the target microbial strain for mixed fermentation. This process is widely used in the industrial production of products such as biocontrol agents, enzyme preparations, and organic fertilizers.

[0003] However, in practice, the ingredient preparation process has significant technical flaws. Traditional ingredient preparation rooms are mostly open spaces, and the raw materials used are mainly powdery materials (such as soybean meal and wheat bran). During the weighing, mixing, and transfer of raw materials in the ingredient containers, powdery materials are easily suspended particulate matter due to friction, collision, and airflow disturbance, resulting in dust pollution. This type of dust not only deteriorates the air quality in the working environment but can also enter the body of operators through the respiratory tract. Long-term exposure may cause respiratory diseases, seriously threatening workers' health. In addition, dust diffusion may also contaminate surrounding equipment and products, reduce the level of hygiene control in the fermentation process, and even affect the stability and yield of the final product.

[0004] In existing technologies, dust control measures for the solid-state fermentation ingredient batching process are relatively limited. Some companies have attempted to alleviate dust problems through artificial shielding or localized ventilation devices, but these methods are difficult to achieve comprehensive dust capture and treatment, and lack systematic means to suppress airflow disturbances in open spaces. Therefore, how to effectively control dust generation and diffusion during the solid-state fermentation raw material batching process has become an urgent technical challenge. This invention aims to provide a structurally optimized batching system and method to address the above problems, thereby achieving a sealed production environment, controllable dust emissions, and ensuring the health of operators and the stability of the production process. Summary of the Invention

[0005] The technical problem this invention aims to solve is to provide a microbial solid-state fermentation culture medium mixing device with significant dust control. It integrates multiple processes such as raw material conveying, mixing, dust removal at discharge, and continuous transfer, achieving integrated operation of the batching process and greatly improving production efficiency. The efficient mixing auger, combined with the spiral conveyor feeding structure, ensures continuous mixing during the feeding process, guaranteeing the accuracy of raw material proportions and the uniformity of mixing. It also ensures stable power transmission, has a reasonable overall structural design, a low failure rate during operation, and guarantees continuous production. Effective dust control prevents contamination of fermentation raw materials during the batching stage, improving the hygiene control level of the fermentation process, and thus enhancing the quality stability and yield of the final product.

[0006] Adaptable to industrial production needs: The overall structure is scientifically laid out, and the components are firmly connected. The number of screw conveyor feeding structures 1 and the number of material-carrying units 21 can be flexibly adjusted according to the production scale to adapt to industrial production lines with different capacities. The equipment is easy to operate, has low maintenance costs, and has broad application prospects and practical value.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a microbial solid fermentation culture medium mixing device, multiple spiral conveying feeding structures and a mixing device, wherein the multiple spiral conveying feeding structures convey the material to the inner cavity of the mixing device, and the bottom of the mixing device is provided with a dust removal matching structure and a distribution conveying device that cooperate with its discharge end. The mixing device includes a support frame, on which a mixing box is provided that is connected to the discharge end of multiple screw conveyor feeding structures. The bottom of the mixing box is provided with a discharge port and a solenoid valve. The top cover of the mixing box is provided with a first fixed seat, and the first fixed seat is provided with a first motor. The output end of the first motor is connected to a mixing auger set inside the mixing box. The distribution and conveying device includes a track structure, a power structure, and multiple sets of material-carrying units.

[0008] In a preferred embodiment, the dust removal structure includes a dust removal hood fixedly connected to the discharge port. The dust removal hood is equipped with multiple sets of partitions, which divide the inner cavity of the dust removal hood into a discharge chamber and multiple dust removal chambers. Each dust removal chamber is equipped with an exhaust pipe, which passes through the dust removal hood and is connected to one end of a ventilation pipe. The other end of the ventilation pipe is connected to an exhaust dust removal device.

[0009] In a preferred embodiment, the dust hood is provided with guide arc plates on both sides to cooperate with the distribution and conveying device.

[0010] In a preferred embodiment, the bottom of the guide arc plate is provided with a side sealing plate that cooperates with the distribution and conveying device.

[0011] In a preferred embodiment, the track structure includes symmetrically arranged main support seats, with an inner ring track and an outer ring track on the main support seats. Multiple sets of auxiliary support seats are provided at the bottom of the outer ring track, and multiple sets of material carrying units are provided on the inner and outer ring tracks. In a preferred embodiment, the power structure includes a base connected to the track structure, a base with mutually cooperating support shafts, the mutually cooperating support shafts being connected by a connecting plate, a sprocket on the support shaft, a transmission chain on the sprocket, multiple sets of support rods on the transmission chain, a feeding head on the support rod that cooperates with the material carrying unit, a linkage wheel set on one side of the support shaft, the linkage wheel set cooperating with the transmission wheel set on the second motor through multiple transmission belts, and the second motor being fixedly connected to the base through a second fixed seat.

[0012] In a preferred embodiment, the material-carrying unit includes a tray with symmetrically arranged guide grooves. The tray is loaded onto a support frame. The bottom of the support frame is provided with a slot that mates with the feeding head and multiple sets of casters that mate with the track structure. The casters are installed on one side of an adjusting frame. The adjusting frame is in a limiting sliding engagement with a limiting groove located at the bottom of the support frame. The other side of the adjusting frame is connected to a fixed plate fixedly installed at the bottom of the support frame via an elastic element.

[0013] The microbial solid-state fermentation culture medium mixing device provided by this utility model, by adopting the above-described structure, has the following beneficial effects: (1) The dust control effect is significant. It integrates multiple processes such as raw material conveying, mixing, material discharge dust removal, and continuous transfer, realizing integrated operation of the batching process and greatly improving production efficiency; (2) The mixing auger efficiently mixes the materials, and the screw conveyor feeding structure ensures continuous mixing during the feeding process, thus ensuring the accuracy of the raw material ratio and the uniformity of the mixing. (3) It ensures the stability of power transmission, has a reasonable overall structural design, a low failure rate during operation, and ensures the continuity of production; (4) Effective dust control prevents the fermentation raw materials from being contaminated during the batching stage, improves the hygiene control level of the fermentation process, and thus improves the quality stability and yield of the final product. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the mixing device of this utility model.

[0016] Figure 3 This is a schematic diagram of the dust removal assembly structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the distribution and conveying device of this utility model.

[0018] Figure 5 This is a schematic diagram of the track structure of this utility model.

[0019] Figure 6 This is a schematic diagram of the material-carrying unit structure of this utility model.

[0020] Figure 7 This is a schematic diagram of the material-carrying unit structure of this utility model.

[0021] Figure 8 This is a schematic diagram of the power structure of this utility model.

[0022] In the diagram: 1. Screw conveyor feeding structure; 2. Mixing device; 3. Dust removal and matching structure; 4. Distribution and conveying device; 5. Support frame; 6. Mixing box; 7. Discharge port; 8. Solenoid valve; 9. First fixed seat; 10. First motor; 11. Mixing auger; 12. Dust hood; 13. Partition plate; 14. Guide arc plate; 15. Side sealing plate; 16. Exhaust pipe; 17. Ventilation pipe; 18. Exhaust and dust removal device; 19. Track structure; 20. Power structure; 21. Carrying unit; 22. Main support seat. Inner ring track 23, outer ring track 24, auxiliary support seat 25, base 26, support shaft 27, connecting plate 28, sprocket 29, transmission chain 30, support rod 31, feeding head 32, linkage wheel set 33, transmission belt 34, transmission wheel set 35, second motor 36, second fixed seat 37, pallet 38, guide chute 39, support frame 40, slot 41, limit slide 42, adjusting frame 43, universal wheel 44, elastic element 45, fixed plate 46. Detailed Implementation

[0023] Example 1: like Figure 1-8 In this microbial solid-state fermentation culture medium mixing device, there are multiple spiral conveyor feeding structures 1 and a mixing device 2. The multiple spiral conveyor feeding structures 1 are evenly distributed at the feeding end of the mixing device 2, which can accurately and stably transport different kinds of raw materials into the inner cavity of the mixing device 2 according to a preset ratio, avoiding additional dust caused by local accumulation or uneven flow rate during the raw material transportation process. The bottom of the mixing device 2 is equipped with a dust removal cooperating structure 3 and a distribution conveying device 4 that are closely matched with its discharge end. The dust removal cooperating structure 3 realizes dust collection during the discharge process, and the distribution conveying device 4 completes the continuous transfer of the mixed materials.

[0024] The mixing device 2 includes a support frame 5, which provides stable support for the entire mixing device and ensures structural stability during operation. The support frame 5 is equipped with a mixing box 6 that is connected to the discharge end of multiple screw conveyor feeding structures 1. The mixing box 6 adopts a sealed design, which can effectively reduce dust escape during the mixing process. The bottom of the mixing box 6 is equipped with a discharge port 7 and a solenoid valve 8. The solenoid valve 8 is used to precisely control the opening and closing of the discharge port 7 and the discharge speed. The top cover of the mixing box 6 is equipped with a first fixing seat 9, which is fixed to the top cover of the mixing box 6 through a stable connection structure. The first fixing seat 9 is equipped with a first motor 10, and the output end of the first motor 10 is connected to a mixing auger 11 set in the mixing box 6. The first motor 10 drives the mixing auger 11 to rotate at high speed, so as to achieve full mixing of multiple raw materials and ensure the uniformity of material mixing.

[0025] The distribution and conveying device 4 includes a track structure 19, a power structure 20, and multiple sets of material-carrying units 21. The track structure 19 provides movement trajectory support for the material-carrying units 21, and the power structure 20 provides stable power for the movement of the material-carrying units 21. The multiple sets of material-carrying units 21 operate in cycles to achieve continuous material conveying.

[0026] In a preferred embodiment, the dust removal structure 3 includes a dust removal hood 12 fixedly connected to the discharge port 7. The connection between the dust removal hood 12 and the discharge port 7 is sealed to prevent dust leakage. The dust removal hood 12 is equipped with multiple sets of partitions 13 arranged in an alternating pattern, dividing the inner cavity of the dust removal hood 12 into a discharge chamber and multiple dust removal chambers. Each dust removal chamber is equipped with an extraction pipe 16, which is evenly distributed within the dust removal chamber to ensure that dust in each area can be effectively captured. The extraction pipe 16 passes through the dust removal hood 12 and is connected to one end of a ventilation pipe 17. The other end of the ventilation pipe 17 is connected to an extraction dust removal device 18, forming a complete dust collection channel to achieve centralized dust treatment.

[0027] In a preferred embodiment, the dust hood 12 is symmetrically provided with guide arc plates 14 on both sides to cooperate with the distribution and conveying device 4. The curvature of the guide arc plates 14 is adapted to the movement trajectory of the material carrying unit 21, which can guide the falling material to fall accurately into the material carrying unit 21 and avoid the material from spilling and generating dust.

[0028] In a preferred embodiment, the bottom of the guide arc plate 14 is provided with a side sealing plate 15 that cooperates with the distribution and conveying device 4. The side sealing plate 15 forms a sealed fit with the side of the material carrying unit 21, further preventing dust from spreading from the gap between the guide arc plate 14 and the material carrying unit 21.

[0029] In a preferred embodiment, the track structure 19 includes symmetrically arranged main support seats 22, which provide the main support for the track structure and ensure the overall load-bearing capacity. The main support seats 22 are provided with an inner ring track 23 and an outer ring track 24, which are parallel and concentrically arranged to provide a stable circular motion path for the material-carrying units 21. The bottom of the outer ring track 24 is provided with multiple sets of secondary support seats 25, which are evenly distributed to further improve the support stability and smooth operation of the outer ring track 24. Multiple sets of material-carrying units 21 are provided on the inner ring track 23 and the outer ring track 24, and these units move cyclically along the track to achieve continuous material feeding.

[0030] In a preferred embodiment, the power structure 20 includes a base 26 connected to the track structure 19. The base 26 provides an installation foundation for each component of the power structure, ensuring stable installation. The base 26 has mutually cooperating support shafts 27, which are connected by connecting plates 28 to form a stable transmission support assembly. Each support shaft 27 has a sprocket 29, and a transmission chain 30 meshes with the sprocket 29 to ensure the accuracy and stability of power transmission. The transmission chain 30 has multiple sets of support rods 31. 1. The material is evenly distributed on the transmission chain 30. The support rod 31 is equipped with a feeding head 32 that cooperates with the material carrying unit 21. The feeding head 32 can achieve precise engagement and transmission with the material carrying unit 21. The support shaft 27 on one side is equipped with a linkage wheel set 33. The linkage wheel set 33 is connected to the transmission wheel set 35 on the second motor 36 through multiple transmission belts 34 to achieve multi-stage power transmission. The second motor 36 is fixedly connected to the base 26 through the second fixed seat 37. The second fixed seat 37 ensures that the second motor 36 does not deviate or vibrate during operation.

[0031] In a preferred embodiment, the material-carrying unit 21 includes a tray 38, which is used to carry the mixed materials. Symmetrical guide grooves 39 are provided on the tray 38, and the guide grooves 39 are adapted to the discharge direction of the guide arc plate 14, facilitating the rapid and orderly falling of materials into the tray 38. The tray 38 is mounted on a support frame 40, which provides stable support for the tray 38. The bottom of the support frame 40 is provided with a slot 41 that mates with the feeding head 32 and multiple sets of casters 44 that mate with the track structure 19. The slot 41 precisely engages with the feeding head 32, ensuring smooth movement. Force is effectively transmitted to the support frame 40; casters 44 are installed on one side of the adjustment frame 43, allowing the material loading unit 21 to move smoothly along the track structure 19; the adjustment frame 43 is in a limited sliding engagement with the limiting slide groove 42 set at the bottom of the support frame 40, and the limiting slide groove 42 provides sliding guidance for the adjustment frame 43 to ensure accurate adjustment direction; the other side of the adjustment frame 43 is connected to the fixed plate 46 fixedly installed at the bottom of the support frame 40 through the elastic element 45, and the elastic element 45 can buffer the vibration generated during the movement of the material loading unit 21 to prevent the material from spilling due to vibration.

[0032] Example 2: like Figure 1-8 The working principle of this utility model is as follows: Multiple spiral conveyor feeding structures 1 precisely deliver different types of solid fermentation raw materials (such as corn, bran, soybean meal, etc.) to the mixing box 6 of the mixing device 2 according to a preset raw material ratio. The first motor 10 is started, and the first motor 10 drives the mixing auger 11 to rotate at high speed in the mixing box 6, which fully stirs and mixes the various raw materials. The sealed design of the mixing box 6 can effectively reduce the escape of dust during the mixing process. After the raw materials are mixed, the control solenoid valve 8 is opened, and the mixed material falls from the discharge port 7 into the dust collector hood 12 of the dust collection structure 3. Multiple sets of staggered baffles 13 inside the dust collector hood 12 prevent a large amount of dust from being generated due to airflow disturbance when the material falls. At the same time, the exhaust dust removal device 18 is activated. The exhaust dust removal device 18 uses the ventilation pipe 17 and the exhaust pipe 16 in each dust removal chamber to comprehensively capture and centrally treat the suspended dust generated inside the dust collector hood 12, preventing the dust from spreading to the external environment. After being processed by the dust removal hood 12, the material falls precisely into the tray 38 of the material carrying unit 21 of the distribution and conveying device 4 below under the guidance of the guide arc plate 14. The side sealing plate 15 at the bottom of the guide arc plate 14 forms a seal with the side of the material carrying unit 21, further preventing dust leakage. The second motor 36 is started. The second motor 36 drives the support shaft 27 to rotate through the transmission wheel set 35, the transmission belt 34 and the linkage wheel set 33. The sprocket 29 on the support shaft 27 drives the transmission chain 30 to circulate. The feeding head 32 on the transmission chain 30 engages with the slot 41 at the bottom of the support frame 40, driving the material carrying unit 21 to move smoothly along the inner ring track 23 and the outer ring track 24 of the track structure 19. During the movement of the material-carrying unit 21, the casters 44 at the bottom of the support frame 40 ensure smooth movement along the track; the elastic element 45, through the cooperation of the adjusting frame 43 and the limiting slide groove 42, buffers the vibration generated by the material-carrying unit 21 when starting, stopping or turning, and the turning process is smoother and more fluid, preventing the material in the tray 38 from spilling due to vibration, while ensuring the stable fit between the material-carrying unit 21 and the track structure 19. Multiple sets of material-carrying units 21 operate in a circular manner along the ring track, realizing the continuous and efficient transfer of mixed materials, and providing a stable material supply for the subsequent fermentation process.

[0033] The beneficial effects of this utility model are as follows: It significantly controls dust, integrating multiple processes such as raw material conveying, mixing, dust removal at discharge, and continuous transfer, achieving integrated operation of the batching process and greatly improving production efficiency; the efficient mixing auger, combined with the screw conveyor feeding structure, ensures continuous mixing during the feeding process, guaranteeing the accuracy of raw material proportions and the uniformity of mixing; it ensures the stability of power transmission, with a reasonable overall structural design and a low failure rate during operation, ensuring the continuity of production; and the effective dust control prevents the fermentation raw materials from being contaminated during the batching stage, improving the hygiene control level of the fermentation process, thereby improving the quality stability and yield of the final product.

Claims

1. A microbial solid-state fermentation culture medium mixing device, comprising multiple spiral conveying structures (1) and a mixing device (2), characterized in that: The multiple spiral conveyor feeding structures (1) convey the material to the inner cavity of the mixing device (2). The bottom of the mixing device (2) is provided with a dust removal and feeding structure (3) and a distribution and conveying device (4) that cooperate with its discharge end. The mixing device (2) includes a support frame (5), a mixing box (6) connected to the discharge end of multiple screw conveyor feeding structures (1) is provided on the support frame (5), a discharge port (7) and a solenoid valve (8) are provided at the bottom of the mixing box (6), a first fixed seat (9) is provided on the top cover of the mixing box (6), a first motor (10) is provided on the first fixed seat (9), and the output end of the first motor (10) is connected to the mixing auger (11) set in the mixing box (6); The distribution and conveying device (4) includes a track structure (19), a power structure (20), and multiple sets of material-carrying units (21).

2. The microbial solid-state fermentation culture medium mixing device according to claim 1, characterized in that: The dust removal structure (3) includes a dust removal hood (12) fixedly connected to the discharge port (7). The dust removal hood (12) is provided with multiple sets of partitions (13). The multiple sets of partitions (13) divide the inner cavity of the dust removal hood (12) into a discharge chamber and multiple dust removal chambers. Each dust removal chamber is provided with an exhaust pipe (16). The exhaust pipe (16) passes through the dust removal hood (12) and is connected to one end of the ventilation pipe (17). The other end of the ventilation pipe (17) is connected to the exhaust dust removal device (18).

3. The microbial solid-state fermentation culture medium mixing device according to claim 2, characterized in that: The dust hood (12) is provided with guide arc plates (14) on both sides to cooperate with the distribution and conveying device (4).

4. The microbial solid-state fermentation culture medium mixing device according to claim 3, characterized in that: The bottom of the guide arc plate (14) is provided with a side sealing plate (15) that cooperates with the distribution and conveying device (4).

5. The microbial solid-state fermentation culture medium mixing device according to claim 1, characterized in that: The track structure (19) includes a symmetrically arranged main support seat (22), an inner ring track (23) and an outer ring track (24) on the main support seat (22), a number of auxiliary support seats (25) at the bottom of the outer ring track (24), and a number of material carrying units (21) on the inner ring track (23) and the outer ring track (24).

6. The microbial solid-state fermentation culture medium mixing device according to claim 1, characterized in that: The power structure (20) includes a base (26) connected to the track structure (19). The base (26) is provided with mutually cooperating support shafts (27). The mutually cooperating support shafts (27) are connected by a connecting plate (28). The support shafts (27) are provided with sprockets (29). The sprockets (29) are fitted with a transmission chain (30) that cooperates with them. The transmission chain (30) is provided with multiple sets of support rods (31). The support rods (31) are provided with feeding heads (32) that cooperate with the material loading unit (21). The support shafts (27) on one side are provided with a linkage wheel set (33). The linkage wheel set (33) is connected to the transmission wheel set (35) on the second motor (36) through multiple transmission belts (34). The second motor (36) is fixedly connected to the base (26) through the second fixed seat (37).

7. The microbial solid-state fermentation culture medium mixing device according to claim 1, characterized in that: The loading unit (21) includes a tray (38), on which guide grooves (39) are symmetrically arranged. The tray (38) is loaded on a support frame (40). The bottom of the support frame (40) is provided with a slot (41) that cooperates with the feeding head (32) and multiple sets of casters (44) that cooperate with the track structure (19). The casters (44) are installed on one side of the adjusting frame (43). The adjusting frame (43) is limited and slidably cooperated with the limiting slide groove (42) at the bottom of the support frame (40). The other side of the adjusting frame (43) is connected to the fixing plate (46) fixedly installed at the bottom of the support frame (40) through an elastic element (45).

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