A solid-state fermentation apparatus for Beauveria bassiana

Abstract

This utility model relates to the field of microbial fermentation engineering technology, specifically to a solid-state fermentation device for Beauveria bassiana, including a fermentation chamber. A fan and a ventilation pipe are respectively installed at the upper and lower ends of the fermentation chamber. A rotating sleeve is rotatably connected inside the fermentation chamber. A motor is fixedly connected to the bottom of the fermentation chamber, and the output end of the motor is fixedly connected to the bottom end of the rotating sleeve. A cooling and oscillation mechanism periodically lifts the culture tray through a cam to generate oscillation, which, together with the air circulation of the fan and ventilation pipe, enhances the heat exchange between the substrate and the cold air. The spiral stirring blade has a double-layer hollow structure and is connected to the drainage hole to guide the discharge of condensate or cleaning wastewater. At the same time, the hollow structure reduces the temperature of the stirring blade itself and assists in the heat dissipation of the substrate.

Description

Technical Field

[0001] This utility model relates to the field of microbial fermentation engineering technology, specifically to a solid-state fermentation device for Beauveria bassiana. Background Technology

[0002] Beauveria bassiana is a broad-spectrum entomopathogenic fungus that has been widely used in agriculture and forestry to control various pests. Due to its wide host range, non-toxicity, odorlessness, and safety to the environment and animals, it has been developed into various formulations for pest control. Currently, conidial preparations are the most studied both domestically and internationally. The widely used industrial production process for Beauveria bassiana is liquid-solid two-phase fermentation. This involves first obtaining a large amount of Beauveria bassiana mycelium or budding spores through liquid fermentation, then inoculating them onto a solid substrate for solid-state fermentation, resulting in the production of numerous aerial conidia similar to the natural infector on the substrate surface.

[0003] A search revealed a Chinese patent publication number "CN214571881U" describing a Beauveria bassiana fermentation device. The device includes a fermentation chamber containing a culture rack with several culture trays for holding microbial cells. Several fans are located outside the fermentation chamber, with one end of each fan extending into the chamber via an air inlet pipe. Several horizontally arranged rotating shafts are fixed to the culture rack, each shaft passing through a shaking table which is rotatably connected to the shaft. Culture trays are placed on the shaking table. Limiting plates are located near and below the shaking table on the culture rack, with first limiting springs positioned on the limiting plates towards the shaking table. One end of the air inlet pipe extends into the fermentation chamber and is connected to a flexible hose. A lifting device capable of moving the air outlet of the flexible hose is also provided within the fermentation chamber. This device utilizes gas flow to keep the culture trays holding Beauveria bassiana in a shaking state, thereby improving the germination rate of the cells.

[0004] However, the above-mentioned patents have certain limitations in use. They have poor heat dissipation and cooling effects and cannot be stirred and cooled on solid substrates, which leads to uneven distribution of oxygen, moisture and heat in the substrate. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a solid fermentation device for Beauveria bassiana, which can effectively solve the problems of poor heat dissipation and cooling effect and inability to stir and cool the solid substrate, resulting in uneven distribution of oxygen, moisture and heat in the substrate.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a solid-state fermentation device for Beauveria bassiana, comprising:

[0008] A fermentation box is provided, with a fan and a ventilation pipe installed at its upper and lower ends respectively. A rotating sleeve is rotatably connected inside the fermentation box. A motor is fixedly connected to the bottom of the fermentation box, and the output end of the motor is fixedly connected to the bottom of the rotating sleeve. Three drainage holes are provided on the circumferential surface of the motor. Three spiral stirring blades are movably engaged on the outer surface of the rotating sleeve. Each of the three spiral stirring blades has a culture tray on its outer surface. There is a gap between the three culture trays and the three rotating sleeves.

[0009] It also includes a cooling and oscillation mechanism, which is located inside the fermentation chamber and is used to cool the solid substrate.

[0010] Furthermore, the cooling oscillation mechanism includes:

[0011] Three fixed plates are fixedly connected to the inner circumference of the fermentation box;

[0012] A rotating rod is rotatably connected to the fermentation tank and three fixed trays;

[0013] Three cams are fixedly connected to the circumferential surface of the rotating rod, and the three cams are respectively used to lift the outer surface of the three culture trays;

[0014] Three quick-release components are respectively located on the upper side of the three spiral stirring blades. The function of the three quick-release components is to fix the three spiral stirring blades to the circumferential surface of the rotating sleeve rod.

[0015] Furthermore, one set of the quick-release components includes:

[0016] A support disk is fixedly connected to the circumferential surface of the spiral stirring blades;

[0017] Two slots, both of which are formed on the circumferential surface of one of the spiral stirring blades and the rotating sleeve;

[0018] Two card blocks, each of which is movably engaged in two card slots;

[0019] Two first springs, one end of each of the two first springs is fixedly connected to the inner circumference of the support plate, and the other end of each of the two first springs is fixedly connected to the far ends of the two first springs respectively.

[0020] A transmission component is located on the lower side of the fermentation tank and is used to drive the rotating rod to rotate.

[0021] Three sets of elastic support components are respectively located on the outside of the three culture trays, and the three sets of elastic support components are used to elastically support the three culture trays.

[0022] Furthermore, one set of said elastic support components includes:

[0023] Positioning holes, wherein multiple positioning holes are provided, and all of the multiple positioning holes are formed on the circumferential surface of the fixed plate;

[0024] A damping telescopic rod is provided, wherein multiple damping telescopic rods are provided, and the telescopic ends of the multiple damping telescopic rods are fixedly connected to the circumferential surface of the culture tray, and the other ends of the multiple damping telescopic rods are respectively fixedly connected to the inner walls of multiple positioning holes that are close to each other.

[0025] Multiple second springs, one end of each second spring is fixedly connected to the circumferential surface of the culture tray, and the other end of each second spring is fixedly connected to multiple positioning holes.

[0026] Furthermore, the transmission component includes:

[0027] Two pulleys are fixedly connected to the circumferential surfaces of the rotating rod and the rotating sleeve rod, respectively.

[0028] A belt, wherein the belt drive is meshed with the circumferential surfaces of two pulleys.

[0029] Furthermore, the three drainage holes and the three spiral stirring blades are interconnected, and the three spiral stirring blades have a double-layer hollow structure.

[0030] Furthermore, a connecting seat is fixedly connected to the top of the fermentation tank, the rotating sleeve is rotatably connected to the bottom end of the connecting seat, and a transmission pipe is fixedly connected to the top of the connecting seat.

[0031] Furthermore, three support rods are fixedly connected to the bottom of the fermentation tank.

[0032] Beneficial effects

[0033] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0034] 1. The cooling and oscillation mechanism periodically lifts the culture tray through a cam, causing it to oscillate. This, combined with the air circulation from the fan and ventilation pipes, enhances the heat exchange between the substrate and the cold air.

[0035] The spiral stirring blades have a double-layer hollow structure and are connected to the drainage hole, which can guide the discharge of condensate or cleaning wastewater. At the same time, the hollow structure reduces the temperature of the stirring blades themselves and helps the substrate dissipate heat.

[0036] The shaking motion loosens the substrate, increases the heat dissipation area, and combined with forced ventilation, the fermentation temperature can be quickly controlled within a suitable range, avoiding damage to the microorganisms caused by high temperature.

[0037] Fixed trays divide the internal space of the fermentation chamber, guiding airflow to flow evenly between each layer of culture trays, forming a stable temperature field and significantly improving temperature uniformity.

[0038] 2. The motor drives the rotating sleeve and spiral stirring blades to rotate, turning and stirring the substrate, breaking up clumps and increasing the air contact area;

[0039] The elastic support components absorb impact energy during oscillation, allowing the culture tray to return to its original position smoothly and preventing water stratification caused by violent shaking of the substrate.

[0040] The quick-release assembly enables rapid connection and disassembly of the spiral stirring blade and the rotating sleeve through a slot, a locking block, and a first spring, which can be operated without tools. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a perspective view of the present utility model;

[0043] Figure 2 This is a cross-sectional view of the present invention;

[0044] Figure 3 In this utility model Figure 2 Enlarged view of a portion at point A;

[0045] Figure 4 This is a first-view sectional view of the present invention;

[0046] Figure 5 In this utility model Figure 4 A magnified view of section B;

[0047] Figure 6 This is a second-view sectional view of the present invention;

[0048] Figure 7 In this utility model Figure 6 A magnified view of a portion of point C.

[0049] Reference numerals: 1. Fermentation box; 2. Belt; 201. Motor; 202. Rotating sleeve; 203. Drain hole; 204. Spiral stirring blade; 205. Culture tray; 206. Fixed tray; 207. Pulley; 3. Transfer pipe; 4. Fan; 5. Rotating rod; 6. Quick release assembly; 601. Support plate; 602. Slot; 603. First spring; 604. Locking block; 7. Aeration filter assembly; 8. Elastic support component; 801. Damping telescopic rod; 802. Second spring; 803. Positioning hole; 9. Cam; 10. Connecting seat. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0051] The present invention will be further described below with reference to the embodiments.

[0052] See attached document Figures 1-4 A solid-state fermentation device for Beauveria bassiana includes a fermentation chamber 1, with a fan 4 and a breathable filter assembly 7 installed at the upper and lower ends of the fermentation chamber 1, a rotating sleeve 202 rotatably connected inside the fermentation chamber 1, a motor 201 fixedly connected to the bottom end of the fermentation chamber 1, the output end of the motor 201 fixedly connected to the bottom end of the rotating sleeve 202, three drainage holes 203 opened on the circumferential surface of the motor 201, three spiral stirring blades 204 movably engaged on the outer surface of the rotating sleeve 202, and a culture tray 205 provided on the outer surface of each of the three spiral stirring blades 204, with gaps between the three culture trays 205 and the three rotating sleeves 202;

[0053] It also includes a cooling and oscillation mechanism, which is located inside the fermentation chamber 1 and is used to cool the solid substrate.

[0054] In this embodiment: Fermentation chamber 1 provides a fermentation space and maintains the temperature, humidity and gas environment.

[0055] Fan 4 promotes air circulation, supplies oxygen, removes carbon dioxide, and helps regulate temperature and humidity.

[0056] The breathable filter component 7 filters the air, blocks pollutants, and balances the air pressure inside the chamber.

[0057] The motor 201 drives the rotating sleeve 202 to rotate, providing power; the drain hole 203 on the outer surface of the rotating sleeve 202 is used to drain condensate and prevent the motor 201 from getting damp.

[0058] The rotating sleeve 202 transmits power, causing the spiral stirring blade 204 and the culture tray 205 to rotate.

[0059] The spiral stirring blades 204 agitate the mixing substrate, breaking up clumps, increasing air contact, and aiding in heat dissipation.

[0060] The culture tray 205 supports a solid substrate; the gap design allows substrate flow, avoids frictional loss, and supports stratified culture.

[0061] The cooling and oscillation mechanism lowers the fermentation temperature to a suitable range, and the oscillation assists in stirring, improving temperature uniformity.

[0062] Please refer to the details. Figures 1-4 The cooling oscillation mechanism includes:

[0063] Three fixed plates 206 are fixedly connected to the inner circumference of the fermentation box 1;

[0064] Rotating rod 5 is rotatably connected to fermentation box 1 and three fixed plates 206;

[0065] Three cams 9 are fixedly connected to the circumferential surface of the rotating rod 5, and the three cams 9 are used to lift the outer surface of the three culture trays 205 respectively;

[0066] Three quick-release components 6 are respectively located on the upper side of the three spiral stirring blades 204. The function of the three quick-release components 6 is to fix the three spiral stirring blades 204 to the circumferential surface of the rotating sleeve 202.

[0067] In this embodiment: First, the motor 201 is started. The output of the motor 201 drives the rotating sleeve 202 to rotate. The spiral stirring blades 204, which are fixed to the circumferential surface of the fixed plate 206 via the quick-release assembly 6, rotate accordingly, stirring and agitating the solid substrate in the culture plate 205, breaking up clumps and increasing the air contact area. At the same time, the rotating sleeve 202 transmits power to the rotating rod 5 through the transmission mechanism. The rotating rod 5 drives the three cams 9 fixed to its circumferential surface to rotate synchronously. When the protruding part of the cam 9 rotates to contact the outer surface of the culture plate 205, it periodically lifts the culture plate 205, causing it to oscillate back and forth, further loosening the substrate and enhancing the heat exchange efficiency between the substrate and the cold air. The three fixed plates 206, fixed to the inner circumferential wall of the fermentation tank 1, not only provide a stable fulcrum for the rotating rod 5, but also separate the internal space of the fermentation tank 1. Together with the air blown in by the fan 4, they guide the airflow between the layers of culture plates 205, forming a uniform temperature field and achieving efficient cooling. When maintaining the equipment or replacing the stirring blades, the spiral stirring blades 204 and the fixed plate 206 can be quickly separated directly through the quick-release component 6, reducing downtime and ensuring the continuity of fermentation production. The top and bottom of the fermentation box 1 are fixed by snap-fit, and can be disassembled for subsequent replacement.

[0068] Please refer to the details. Figures 1-3 One of the quick-release components 6 includes:

[0069] Support plate 601 is fixedly connected to the circumferential surface of spiral stirring blade 204;

[0070] Two slots 602 are provided on the circumferential surface of one of the spiral stirring blades 204 and the rotating sleeve 202;

[0071] Two card blocks 604 are respectively movably engaged in two card slots 602;

[0072] Two first springs 603, one end of each of the two first springs 603 is fixedly connected to the inner circumference of the support plate 601, and the other end of each of the two first springs 603 is fixedly connected to the far ends of the two first springs 603 respectively.

[0073] Three sets of elastic support components 8 are respectively located on the outside of the three culture trays 205, and are used to elastically support the three culture trays 205.

[0074] In this embodiment: When installing the spiral stirring blade 204, align the slot 602 on the stirring blade with the slot on the rotating sleeve 202. Then, press the locking block 604 to engage it in the slot 602. The locking block 604 retracts against the elastic force of the first spring 603. After the spiral stirring blade 204 is fitted onto the rotating sleeve 202, release the locking block 604. The first spring 603 rebounds, pushing the locking block 604 into the slot 602, where it is securely supported by the support plate 601, thus completing the fixed connection between the stirring blade and the rotating sleeve 202. After starting the motor 201, the rotating sleeve 202 drives the spiral stirring blade 204 to rotate and stir the substrate. Simultaneously, the rotating sleeve 202 drives the rotating rod 5 through the transmission mechanism, causing the cam 9 to rotate accordingly. When the protruding part of cam 9 lifts the culture tray 205, the culture tray 205 moves upward to compress the elastic support component 8, storing elastic potential energy. As cam 9 continues to rotate, after the protruding part moves away, the elastic support component 8 releases its potential energy to push the culture tray 205 back to its original position, achieving stable oscillation. If it is necessary to disassemble the spiral stirring blade 204, press the locking block 604 in the opposite direction to disengage it from the locking slot 602, and the stirring blade can be quickly pulled out for easy equipment maintenance or replacement.

[0075] Please refer to the details. Figures 1-4 One set of elastic support components 8 includes:

[0076] Positioning holes 803 are provided in multiple ways, and all positioning holes 803 are formed on the circumferential surface of the fixed plate 206.

[0077] Damping telescopic rod 801, multiple damping telescopic rods 801 are provided, and the telescopic ends of multiple damping telescopic rods 801 are fixedly connected to the circumferential surface of the culture tray 205. The other ends of multiple damping telescopic rods 801 are respectively fixedly connected to the inner walls of multiple positioning holes 803 that are close to each other.

[0078] Multiple second springs 802 are provided, one end of which is fixedly connected to the circumferential surface of the culture tray 205, and the other end of which is fixedly connected to multiple positioning holes 803 respectively.

[0079] In this embodiment: During the operation of the Beauveria bassiana solid-state fermentation device, when the cam 9 rotates until the protruding part contacts and lifts the culture tray 205, the damping telescopic rod 801 connected to the circumferential surface of the culture tray 205 moves upward and is compressed. At the same time, the second spring 802 is stretched or compressed, and the two together absorb the impact force generated by the lifting of the cam 9. The damping medium inside the damping telescopic rod 801 limits its extension and contraction speed, preventing the culture tray 205 from shaking violently due to inertia. When the cam 9 continues to rotate and the protruding part leaves the culture tray 205, the second spring 802 releases the stored elastic potential energy, pushing the culture tray 205 to return to its original position. At this time, the damping telescopic rod 801 provides damping force during the return process, causing the culture tray 205 to fall slowly back, preventing rebound due to excessive spring force. Through the multiple positioning holes 803 on the circumferential surface of the fixed tray 206, the installation angle and preload of the damping telescopic rod 801 and the second spring 802 can be adjusted according to the fermentation requirements to adapt to different weights of substrates or oscillation intensities.

[0080] Please refer to the details. Figures 1-4 The transmission components include:

[0081] Two pulleys 207 are fixedly connected to the circumferential surfaces of the rotating rod 5 and the rotating sleeve rod 202, respectively.

[0082] Belt 2 is driven and meshed with the circumferential surfaces of two pulleys 207.

[0083] In this embodiment: when the motor 201 starts, it drives the rotating sleeve 202 to rotate, and the pulley 207 fixed on the circumferential surface of the rotating sleeve 202 rotates accordingly. Through the transmission engagement of the belt 2 and the two pulleys 207, power is transmitted to the pulleys 207 fixed on the rotating rod 5, thereby driving the rotating rod 5 to rotate. The rotating rod 5 drives the cam 9 to periodically lift the culture tray 205, realizing oscillation.

[0084] Please refer to the details. Figures 1-3 The three drain holes 203 and the three spiral stirring blades 204 are interconnected, and the three spiral stirring blades 204 have a double-layer hollow structure.

[0085] In this embodiment, the three drainage holes 203 are connected to the double-layer hollow spiral stirring blades 204. When the equipment is running, the condensate or cleaning wastewater at the motor 201 can be guided to be discharged through the internal channel during the rotation of the stirring blades, so as to avoid water accumulation and damage to the motor 201. At the same time, the hollow structure reduces the weight of the stirring blades, reduces energy consumption, and does not affect the function of stirring the substrate.

[0086] Please refer to the details. Figures 1-4 The top of the fermentation tank 1 is fixedly connected to a connecting seat 10, and the rotating sleeve 202 is rotatably connected to the bottom of the connecting seat 10. The top of the connecting seat 10 is fixedly connected to a transmission pipe 3.

[0087] In this embodiment, the connecting seat 10 at the top of the fermentation tank 1 provides top support for the rotating sleeve 202 to ensure its rotational stability. It also enables the introduction of materials before fermentation or the export of products after fermentation through the transmission pipe 3 fixed at the top. In conjunction with the stirring system driven by the bottom motor 201, the materials are fully mixed and fermented in the tank.

[0088] Please refer to the details. Figures 1-4 The bottom of fermentation box 1 is fixedly connected with three support rods.

[0089] In this embodiment, the three support rods at the bottom of the fermentation tank 1 are evenly distributed to provide stable support, prevent the fermentation tank 1 from tilting or shifting due to vibrations caused by internal stirring and oscillation, ensure the safe operation of the equipment, and facilitate the air circulation and drainage operation of the bottom air-permeable filter component 7.

[0090] Working principle: Solid substrate is loaded into culture tray 205 through transfer pipe 3. The spiral stirring blade 204 is installed onto rotating sleeve 202 using quick-release assembly 6. That is, the first spring 603 is compressed by pressing the locking block 604, and the locking block 604 is released after being aligned with the slot 602 to lock into place and complete the fixation. The installation angle and preload of damping telescopic rod 801 and second spring 802 are adjusted through positioning hole 803 as needed. The motor 201 is started, which drives the rotating sleeve 202 to rotate the spiral stirring blade 204 and stir the substrate. At the same time, the rotating sleeve 202 drives the rotating rod 5 and cam 9 to rotate through the pulley 207 and belt 2. Cam 9 periodically lifts the culture tray 205 to make it oscillate. At this time, the damping telescopic rod 801 compresses to absorb the impact energy, and the second spring 802 stores elastic potential energy. After cam 9 moves away, the second spring 802 releases potential energy to push the culture tray 205 back to its original position. The damping telescopic rod 801 limits the fall speed. During the stirring process, the fan 4 and the air-permeable filter assembly 7 work together to realize air circulation, filtration and temperature and humidity regulation. The double-layer hollow structure of the spiral stirring blade 204 is connected to the drain hole 203 to discharge condensate, so that the outer surface of the spiral stirring blade 204 cools the overheated substrate. The fixed plate 206 divides the space and guides the airflow to form a uniform temperature field. After fermentation, the spiral stirring blade 204 can be quickly disassembled through the quick-release assembly 6 for cleaning and maintenance.

[0091] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A solid-state fermentation apparatus for Beauveria bassiana, comprising, characterized in that: Fermentation box (1), with a fan (4) and a ventilation pipe (7) installed at the upper and lower ends of the fermentation box (1) respectively. A rotating sleeve (202) is rotatably connected inside the fermentation box (1). A motor (201) is fixedly connected to the bottom end of the fermentation box (1). The output end of the motor (201) is fixedly connected to the bottom end of the rotating sleeve (202). Three drainage holes (203) are opened on the circumferential surface of the motor (201). Three spiral stirring blades (204) are movably engaged on the outer surface of the rotating sleeve (202). A culture tray (205) is provided on the outer surface of each of the three spiral stirring blades (204). There is a gap between the three culture trays (205) and the three rotating sleeves (202). It also includes a cooling and oscillation mechanism, which is located inside the fermentation chamber (1) and is used to cool the solid substrate.

2. The solid-state fermentation apparatus for Beauveria bassiana according to claim 1, characterized in that, The cooling oscillation mechanism includes: Three fixed plates (206) are fixedly connected to the inner circumference of the fermentation box (1); Rotating rod (5), which is rotatably connected to fermentation box (1) and three fixed plates (206); Three cams (9) are fixedly connected to the circumferential surface of the rotating rod (5), and the three cams (9) are respectively used to lift the outer surface of the three culture trays (205); Three quick-release components (6) are respectively located on the upper side of the three spiral stirring blades (204). The function of the three quick-release components (6) is to fix the three spiral stirring blades (204) onto the circumferential surface of the rotating sleeve (202).

3. The solid-state fermentation apparatus for Beauveria bassiana according to claim 2, characterized in that, One set of the quick-release components (6) includes: Support plate (601), the support plate (601) is fixedly connected to the circumferential surface of the spiral stirring blade (204); Two slots (602) are provided on the circumferential surface of one of the spiral stirring blades (204) and the rotating sleeve (202); Two card blocks (604) are respectively movably engaged in two card slots (602); Two first springs (603) are provided, one end of each of the two first springs (603) is fixedly connected to the inner circumference of the support plate (601), and the other end of each of the two first springs (603) is fixedly connected to the far ends of the two first springs (603). A transmission component is located on the lower side of the fermentation tank (1), and the transmission component is used to drive the rotating rod (5) to rotate. Three sets of elastic support components (8) are respectively located on the outside of the three culture trays (205), and the three sets of elastic support components (8) are respectively used to elastically support the three culture trays (205).

4. The solid-state fermentation apparatus for Beauveria bassiana according to claim 3, characterized in that, One set of the elastic support components (8) includes: Positioning holes (803) are provided in multiple ways, and all of the positioning holes (803) are opened on the circumferential surface of the fixed plate (206); Damping telescopic rod (801), wherein multiple damping telescopic rods (801) are provided, and the telescopic ends of multiple damping telescopic rods (801) are fixedly connected to the circumferential surface of the culture tray (205), and the other ends of multiple damping telescopic rods (801) are respectively fixedly connected to the inner walls of multiple positioning holes (803) that are close to each other. Multiple second springs (802) are provided, one end of which is fixedly connected to the circumferential surface of the culture tray (205), and the other end of which is fixedly connected to multiple positioning holes (803).

5. The solid-state fermentation apparatus for Beauveria bassiana according to claim 4, characterized in that, The transmission component includes: Two pulleys (207) are fixedly connected to the circumferential surfaces of the rotating rod (5) and the rotating sleeve rod (202), respectively; A belt (2) is driven to mesh with the circumferential surfaces of two pulleys (207).

6. The solid-state fermentation apparatus for Beauveria bassiana according to claim 5, characterized in that, The three drainage holes (203) and the three spiral stirring blades (204) are interconnected, and the three spiral stirring blades (204) have a double-layer hollow structure.

7. The solid-state fermentation apparatus for Beauveria bassiana according to claim 6, characterized in that, The fermentation box (1) is fixedly connected to a connecting seat (10) at the top, and the rotating sleeve (202) is rotatably connected to the bottom end of the connecting seat (10). The connecting seat (10) is fixedly connected to a transmission pipe (3) at the top.

8. The solid-state fermentation apparatus for Beauveria bassiana according to claim 7, characterized in that, The bottom of the fermentation box (1) is fixedly connected to three support rods.

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